JP5794254B2 - Contact spring for connector and card connector using the same - Google Patents

Description

  The present invention relates to a contact spring for a connector and a card connector using the same.

  2. Description of the Related Art Conventionally, a card connector for mounting a card has been widely used for reading / writing data from / to a memory card such as a micro SD card or an IC card such as a SIM card (hereinafter referred to as a card). The card connector is attached to, for example, a board built in the electronic device.

  This type of card connector is provided with a contact spring for connecting the card and the substrate. As shown in FIG. 7, the contact spring 100 includes a first fixing portion 110, a second fixing portion 120, a first spring portion 130, a second spring portion 140, a contact portion 150, A device having a mounting unit 160 is known (see, for example, Patent Document 1).

  The first fixing part 110 and the second fixing part 120 are fixed to the connector main body 200 with appropriate intervals.

  A first fixing portion 110 and a second fixing portion 120 are continuously formed on the first spring portion 130. The first spring portion 130 is elastically deformable with respect to the first fixing portion 110 and the second fixing portion 120.

  The second spring portion 140 is provided from the substantially U-shaped bottom portion of the first spring portion 130 toward the first fixing portion 110 and the second fixing portion 120 side. The second spring part 140 is elastically deformable with respect to the first spring part 130.

  The contact part 150 is provided on the second spring part 140 and can contact the electrode terminal 300 of the card.

  The mounting portion 160 is provided so as to protrude from the first fixing portion 110 on the opposite side of the first spring portion 130 with the first fixing portion 110 interposed therebetween. The mounting portion 160 is connected to the terminal of the substrate by soldering or the like.

Japanese Patent Laid-Open No. 2000-667977

  However, in the conventional contact spring 100, the mounting portion 160 is provided on the opposite side of the first spring portion 130 with the first fixing portion 110 interposed therebetween. In the case of forming by punching out from the material, the yield in material removal is poor. Further, since the contact spring 100 becomes larger than the range surrounded by the first fixing portion 110, the second fixing portion 120, and the first spring portion 130, it is difficult to reduce the size of the card connector. .

  In addition, when a card is attached to the card connector, there is a card having an electrode terminal extending to an adjacent contact spring region. When such a card is mounted, an adjacent contact spring may erroneously contact an electrode terminal that is not a connection target due to vibration or the like.

  The present invention has been made to solve such a problem, and can reduce the size, improve the yield in material processing, and prevent erroneous contact with the electrode terminals of the card. An object of the present invention is to provide a contact spring for a connector that can be used and a card connector using the contact spring.

In order to achieve the above object, a connector contact spring according to the present invention is provided on a card connector having a connector body capable of holding the card for reading / writing data from / to a card having electrode terminals and attached to a board. In the connector contact spring for electrically connecting the card and the substrate, the fixed portion fixed to the connector main body, the fixed portion, the opposite side portion positioned on the opposite side from the fixed portion, and the A side part comprising a fixing part and a side part connecting the opposite side part, and a side part continuously forming an annular shape, and a first spring part that is elastically deformable with respect to the fixing part; A second spring part that is provided continuously from a part of the inner peripheral side of one side part of the spring part and is elastically deformable with respect to the first spring part, and the second spring part Fixed part and front A contact portion provided between the opposite side portion and capable of contacting the electrode terminal; and provided continuously from at least a part of the fixed portion so as to protrude toward an inner peripheral side of the first spring portion; and And a connecting portion between the one side portion of the first spring portion and the second spring portion is supported by a body-side support member formed on the connector main body. The card is provided with a distance from the substrate, and the card includes a plurality of electrode terminals, and faces the part of the inner peripheral side of the side portion where the second spring portion is continuously provided. A part of the outer peripheral side edge of the side portion of the first spring portion that is in position, protruding toward the contact portion side of the second spring portion, the outer peripheral side edge contacting the adjacent electrode terminal JP that protrusions are formed to prevent that To.

  With the configuration of the present invention, the mounting portion of the connector contact spring is provided so as to protrude from the inner peripheral side of the first spring portion continuously from at least a part of the fixed portion. For this reason, the connector contact spring can be made smaller as compared with the conventional case where the mounting portion is provided so as to protrude from the outer peripheral side of the first spring portion, so that the entire card connector is reduced in size. be able to.

  In addition, compared to the conventional case where the mounting portion is provided to protrude to the outer peripheral side of the first spring portion, the yield in material removal is increased when the connector contact spring is formed by punching from a single member. Can be improved. Therefore, the material cost can be reduced as compared with the conventional case.

  In this connector contact spring, a protruding portion is formed at a part of the outer peripheral side edge of the side portion of the first spring portion where the second spring portion is provided continuously, and the outer peripheral side edge portion. May be in a position facing a part on the inner peripheral side of the side portion where the second spring portion is continuously provided.

  According to this configuration, erroneous contact between the adjacent connector contact spring and the electrode terminal of the card can be prevented.

  In order to achieve the above object, a card connector according to the present invention is configured to include a connector main body that can hold a card and is attached to a board, and the connector contact spring mounted on the connector main body. With this configuration, in the card connector equipped with the connector contact spring described above, the connector contact spring can be made smaller, so that the entire card connector can be miniaturized. In addition, since the yield of the contact spring for connectors can be improved, the cost of the card connector can be reduced.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to achieve size reduction, the yield in material picking can be improved, and the contact spring for connectors which can prevent an erroneous contact with the electrode terminal of a card | curd, and its utilization The card connector can be provided.

It is a perspective view which shows the card connector carrying the connector contact spring which concerns on the 1st and 2nd embodiment of this invention. It is a perspective view which shows the contact spring for connectors which concerns on the 1st Embodiment of this invention. It is a partial cross section side view which shows an example in which the contact spring for connectors which concerns on the 1st Embodiment of this invention was mounted in the card connector, and the card | curd was mounted | worn. It is a perspective view which shows the contact spring for connectors which concerns on the 2nd Embodiment of this invention. It is a partial cross section side view which shows an example in which the contact spring for connectors which concerns on the 2nd Embodiment of this invention was mounted in the card connector, and the card | curd was mounted | worn. It is a perspective view which shows the contact spring for connectors which concerns on the 3rd Embodiment of this invention. It is a figure which shows the conventional contact spring for connectors, (a) is a top view, (b) shows a side view, respectively. It is a perspective view which shows the contact spring for connectors which concerns on the 4th Embodiment of this invention. FIG. 9 is a perspective view showing a connector contact spring according to a fourth embodiment of the present invention as viewed from below in FIG. 8. It is sectional drawing of the contact spring for connectors which concerns on the 4th Embodiment of this invention seen in the BB line direction shown in FIG. It is a top view which expands and shows a part of structure of an example of the state which mounted the contact spring for connectors based on the 4th Embodiment of this invention in a card connector, and mounted | wore with the card | curd. It is a partial cross section side view which shows an example of the state which mounted the contact spring for connectors concerning the 4th Embodiment of this invention in the card connector, and mounted | wore with the card | curd. It is a perspective view which shows the contact spring for connectors which concerns on the 5th Embodiment of this invention. FIG. 14 is a perspective view showing a connector contact spring according to a fifth embodiment of the present invention as viewed from below in FIG. 13. It is a perspective view which shows the card connector carrying the connector contact spring which concerns on the 6th Embodiment of this invention. It is a perspective view which shows the contact spring for connectors which concerns on the 6th Embodiment of this invention. FIG. 17 is a perspective view showing a connector contact spring according to a sixth embodiment of the present invention as viewed from below in FIG. 16. It is side surface sectional drawing of the contact spring for connectors which concerns on the 6th Embodiment of this invention seen in the CC line direction shown in FIG.

  Hereinafter, connector contact springs according to first and second embodiments of the present invention will be described with reference to the drawings. In the present embodiment, the case where the connector contact spring according to the present invention is mounted on a card connector for a SIM card will be described.

  First, the configuration will be described.

  As shown in FIG. 1, the card connector 1 includes a connector main body 10, a shield cover 20, a contact spring 30 according to the first embodiment as a contact spring for connectors, and a contact spring 40 according to the second embodiment. And a contact spring 50.

  The connector body 10 includes a case that can accommodate and hold the card 2 in order to read / write data from / to the card 2 and is attached to a substrate 3 built in an electronic device such as a mobile phone (FIG. 2). reference). In the present embodiment, the card 2 is inserted into and removed from the connector main body 10 in a direction along the plane of the card.

  The shield cover 20 covers the connector body 10 and prevents the card 2 accommodated in the connector body 10 from jumping out.

  In the present embodiment, the card 2 has eight electrode terminals 2a, 2b, and 2c, and these electrode terminals are arranged in a substantially square shape on one side. Specifically, three front sides and three rear sides of the card 2 in the insertion direction A are electrode terminals 2a, one center on the right side in the insertion direction A is an electrode terminal 2b, and one center on the left side in the insertion direction A is an electrode. Terminal 2c.

  The contact springs 30 are arranged at six locations corresponding to the six electrode terminals 2 a of the card 2 accommodated in the connector body 10.

  As shown in FIGS. 2 and 3, the contact spring 30 includes a fixed portion 31 that is fixed to the connector body 10, a first spring portion 33, a second spring portion 34, a contact portion 35, and a mounting portion. 36. The contact spring 30 is formed by punching a single plate material, for example, a thin metal plate.

  In the present embodiment, the fixing portion 31 is fixed to the connector main body 10 by mold integral molding or the like. By embedding the fixing portion 31 in the connector main body 10, the strength of the connector main body 10 is increased. In particular, it is possible to suppress warping deformation of the connector main body 10 due to heat when the card connector 1 is mounted by reflow. it can.

  In the present embodiment, the first spring portion 33 has a substantially U shape, and both end portions of the first spring portion 33 are continuously integrated with both end portions of the fixed portion 31, and the fixed portion 31 and the first spring portion 33 form a substantially quadrangular annular shape. The first spring portion 33 includes an opposite side portion 33a located on the opposite side to the fixed portion 31, and a pair of side side portions 33b that connect the fixed portion 31 and the opposite side portion 33a. Further, the first spring portion 33 can be elastically deformed with respect to the fixed portion 31. Moreover, the opposite side part 33a and a pair of side part 33b comprise the side part of the 1st spring part which concerns on this invention.

  The second spring portion 34 is provided continuously from a part on the inner peripheral side of the first spring portion 33. That is, in the contact spring 30, the second spring portion 34 is formed so as to continuously protrude from the opposite side portion 33 a of the first spring portion 33 toward the inner peripheral side. The second spring portion 34 is elastically deformable with respect to the first spring portion 33.

  Here, the spring stiffness of the first spring portion 33 and the second spring portion 34 is equal. That is, the value obtained by doubling the width of the side portion 33b of the first spring portion 33 and the width of the second spring portion 34 are values that approximate each other.

  Further, when the card 2 is inserted into the connector main body 10 and the contact spring 30 is bent, the bending amount of the contact spring 30 and the thickness of the connector main body 10 are prevented so that any part of the contact spring 30 does not contact the substrate 3. Etc. are set.

  The contact portion 35 is provided on the second spring portion 34 and can contact the electrode terminal 2a of the card 2 when the card 2 is mounted. Here, the direction from the connecting portion 37 between the second spring portion 34 and the opposite side portion 33a of the first spring portion 33 to the contact portion 35 is provided so as to coincide with the insertion direction A of the card 2. Thereby, when the card 2 is inserted into the card connector 1, the electrode terminal 2 a of the card 2 can be prevented from being caught by the tip of the second spring portion 34.

  The mounting portion 36 is provided so as to protrude from the fixed portion 31 to the inner peripheral side of the first spring portion 33. The mounting portion 36 is attached to the terminal 3a of the substrate 3 by soldering (FIG. 3). Accordingly, the first contact spring 30 electrically connects the card 2 and the substrate 3.

  Further, a main body side support member 11 is formed in the connector main body 10. The main body side support member 11 is interposed between the opposite side portion 33 a and the connecting portion 37 of the first spring portion 33 and the substrate 3, and ensures a distance between the opposite side portion 33 a and the connecting portion 37 and the substrate 3. It is supposed to be. However, even if the contact spring 30 is bent by being pushed by the card 2, it can be formed so as not to contact the substrate 3, so the main body side support member 11 is not necessarily required.

  Next, the contact spring 40 is disposed at one location corresponding to the electrode terminal 2 b of the card 2 accommodated in the connector body 10.

  As shown in FIGS. 4 and 5, the contact spring 40 includes a fixed portion 41, a first spring portion 43, a second spring portion 44, a contact portion 45, and a mounting portion 46. . The contact spring 40 is formed by punching a single plate material, for example, a thin metal plate.

  In the present embodiment, the fixing portion 41 is fixed to the connector main body 10 by mold integral molding or the like. Since the fixing portion 41 is embedded in the connector main body 10, the strength of the connector main body 10 is increased. In particular, it is possible to suppress warping deformation of the connector main body 10 due to heat when the card connector 1 is mounted by reflow. it can.

  Further, in the present embodiment, the first spring portion 43 has a substantially U shape, and both end portions of the first spring portion 43 are continuously integrated with both end portions of the fixed portion 41, and The fixed portion 41 and the first spring portion 43 form a substantially rectangular ring that is continuous.

  The first spring portion 43 includes an opposite side portion 43a located on the opposite side to the fixed portion 41, and a pair of side side portions 43b connecting the fixed portion 41 and the opposite side portion 43a. Further, the first spring portion 43 can be elastically deformed with respect to the fixed portion 41. Moreover, the opposite side part 43a and a pair of side part 43b comprise the side part of the 1st spring part which concerns on this invention.

  The second spring portion 44 is provided continuously from a part on the inner peripheral side of the first spring portion 43. That is, in the contact spring 40, the second spring portion 44 is formed so as to continuously protrude from the one side portion 43 b of the first spring portion 43 toward the inner peripheral side. The second spring portion 44 can be elastically deformed with respect to the first spring portion 43.

  Further, when the card 2 is inserted into the connector main body 10 and the contact spring 40 is bent, the bending amount of the contact spring 40 and the thickness of the connector main body 10 are prevented so that any part of the contact spring 40 does not contact the substrate 3. Etc. are set.

  The contact portion 45 is provided on the second spring portion 44 and can contact the electrode terminal 2b of the card 2 when the card 2 is mounted. Here, the direction from the connecting portion 47 between the second spring portion 44 and the side portion 43 b of the first spring portion 43 to the tip end portion of the contact portion 45 is provided so as to coincide with the insertion direction A of the card 2. It has been. Thereby, when the card 2 is inserted into the card connector 1, the electrode terminal 2 b of the card 2 can be prevented from being caught by the tip of the second spring portion 44.

  The mounting portion 46 is provided so as to protrude from the fixed portion 41 toward the inner peripheral side of the first spring portion 43. The mounting portion 46 is attached to the terminal 3a of the substrate 3 by soldering (FIG. 5). As a result, the contact spring 40 electrically connects the card 2 and the substrate 3.

  Since the contact spring 50 (FIG. 1) is only symmetrical with the contact spring 40 about the central axis of the connector body 10, detailed description thereof is omitted.

  Next, the operation will be described.

  First, an operation for attaching the card 2 to the card connector 1 will be described. As shown in FIG. 1, the user inserts the card 2 toward the connector main body 10. The card 2 is accommodated in the connector body 10 by pressing the contact spring 30, the contact spring 40, and the contact spring 50 one after another.

  As shown in FIG. 3, the contact spring 30 is pressed by the card 2, whereby the contact portion 35 is pushed into the substrate 3, and the second spring portion 34 is supported by the main body side support member 11. It bends to the substrate 3 side using 33a or the connecting portion 37 as a fulcrum. At the same time, the first spring portion 33 bends with the central portion at the substrate 3 side, with each end supported by the fixing portion 31 and the body-side support member 11 or with the connecting portion 37 as a fulcrum.

  Further, as shown in FIG. 5, the contact spring 40 is pressed by the card 2, whereby the contact portion 45 is pushed into the substrate 3 side, and the second spring portion 44 is a side of the first spring portion 43. The portion 43b and the connecting portion 47 are bent to the substrate 3 side as a fulcrum. At the same time, the opposite side portion 43 a of the first spring portion 43 is bent toward the substrate 3 while being supported by the fixing portion 41.

  Here, regarding the contact spring 40, the main body side support member 11 like the contact spring 30 is not provided. However, the second spring portion 44 bends toward the substrate 3 with the side portion 43b and the connecting portion 47 of the first spring portion 43 as fulcrums, so that the outer peripheral side of the side portion 43b is separated from the substrate 3. Since it is inclined in the direction, the first spring portion 43 is not bent and contacts the substrate 3 as it is.

  When the card 2 is taken out from the card connector 1, the contact spring 30, the contact spring 40, and the contact spring 50 are released by pulling out the card 2. Thereby, the contact spring 30, the contact spring 40, and the contact spring 50 are restored to their original positions.

  As described above, according to the connector contact spring according to the present embodiment, the mounting portions 36 and 46 protrude from the fixed portions 31 and 41 to the inner peripheral side of the first spring portions 33 and 43. Is provided. For this reason, the contact spring 30, the contact spring 40, and the contact spring 50 can be made smaller as compared with the conventional case where the mounting portion is provided so as to protrude to the outer peripheral side of the first spring portion. The whole connector 1 can be reduced in size.

  In addition, according to the connector contact spring according to the present embodiment, one connector contact spring is provided as compared with the conventional case where the mounting portion is provided to protrude to the outer peripheral side of the first spring portion. The yield in material removal can be improved when forming by punching from the member. Therefore, the material cost can be reduced as compared with the conventional case.

  In addition, the mounting portions 36 and 46 are provided continuously from the fixing portions 31 and 41 and are soldered to the substrate 3, whereby the fixing strength of the fixing portions 31 and 41 to the connector main body 10 can be increased. . That is, the mounting portions 36 and 46 operate in conjunction with the fixing portions 31 and 41 so as to assist the fixing portions 31 and 41. Therefore, even if a load is applied to the first spring portions 33 and 43 and the second spring portions 34 and 44, the fixing portions 31 and 41 are prevented from being lifted or removed from the connector body 10, and the contact spring 30, durability of the contact spring 40 and the contact spring 50 can be improved.

  In addition, according to the connector contact spring according to the present embodiment, the whole of the fixed portion 31 and the first spring portion 33 is continuously annular to form a frame. For this reason, the strength of the contact spring 30 as a whole is increased, and it is difficult to break even for long-term use, and durability can be improved.

  As for the contact spring 40, since the fixed portion 41 and the first spring portion 43 are integrated, the same effect can be obtained. The same applies to the contact spring 50.

  In addition, according to the contact spring for a connector according to the present embodiment, since it is formed by punching out a single plate material, it is manufactured compared to a case where a plurality of members are integrated and formed into a single plate shape. Can be obtained easily and inexpensively.

  Further, according to the connector contact spring according to the present embodiment, since the spring stiffness of the first spring portion 33 and the second spring portion 34 is equal, when the card 2 presses the contact spring 30. The first spring portion 33 and the second spring portion 34 bend in a well-balanced manner. For this reason, for example, the amount of bending of one of the first spring portion 33 and the second spring portion 34 is extremely small so that a spring force cannot be obtained, and the spring force of the contact spring 30 as a whole is reduced. It can be used efficiently.

  Also in the contact spring 40, since the fixing portion 41 and the first spring portion 43 are integrated, the same effect can be obtained. The same applies to the contact spring 50.

  According to the contact spring 30 according to the present embodiment, the second spring portion 34 is formed on the opposite side portion 33a of the first spring portion 33, so that the fixing portion 31 is inserted in the insertion direction A of the card 2. It can be arranged on the back side. Further, according to the contact spring 40 according to the present embodiment, the second spring portion 44 is formed on the side portion 43 b of the first spring portion 43, so that the fixing portion 41 is inserted in the insertion direction A of the card 2. Can be placed on the left side of Furthermore, according to the contact spring 50 according to the present embodiment, since the second spring portion is formed on the side portion of the first spring portion, the fixing portion is arranged on the right side in the insertion direction A of the card 2. can do.

  Therefore, a contact spring having an appropriate shape can be selected in accordance with the insertion direction A of the card 2 and the arrangement of the electrode terminals 2a, 2b, 2c. For this reason, the degree of freedom for optimizing the shape and arrangement of the contact spring can be increased, so that the contact spring can be arranged without considering the insertion direction A and the arrangement of the electrode terminals 2a, 2b, 2c as in the past. Compared with the case where it does, size reduction of the card connector 1 can be achieved.

  Further, according to the card connector 1 according to the present embodiment, when the main body side support member 11 is provided between the connecting portion 37 of the contact spring 30 and the substrate 3, the contact spring 30 contacts the substrate 3. This can be reliably suppressed. Moreover, since the main body side support member 11 can receive a load compared with the case where there is no main body side support member 11, the contact pressure by the contact spring 30 can be increased. Therefore, when the contact pressure of a predetermined magnitude is obtained, the contact spring 30 can be downsized compared to the case where the main body side support member 11 is not provided.

  In the connector contact spring of the present embodiment described above, the case where the fixed portion 31 is formed continuously and is formed integrally with the first spring portion 33 is described. However, the contact spring for a connector according to the present invention is not limited to this, and as shown in FIG. 6, the fixing portion 31 of the contact spring 30a according to the third embodiment includes the first fixing portion 31a and the first fixing portion 31a. It may be separated into two fixing portions 31b.

  In this case, the mounting portion 36 is formed so as to protrude from the inner peripheral side of the first spring portion 33 continuously from at least one of the first fixing portion 31a and the second fixing portion 31b. According to this, since it is not necessary to make the whole shape of the contact spring for connectors annular, it is possible to increase the degree of freedom in design.

  Further, like the fixing portion 31 of the contact spring 30a shown in FIG. 6, the fixing portion 41 of the contact spring 40 may be separated into two parts.

  Moreover, in the connector contact spring of this embodiment described above, a case where it is formed by punching a single plate material is described. However, the contact spring for a connector according to the present invention is not limited to this. For example, a plurality of plate materials may be integrated into a single plate shape. In this case, the degree of freedom of the shape of the connector contact spring can be increased as compared with the case of punching from a single plate.

  Moreover, in the card connector 1 of this Embodiment mentioned above, the case where the card | curd 2 is inserted with respect to the connector main body 10 along a plane direction is demonstrated. However, the card connector according to the present invention is not limited to this, for example, as a structure in which the contact spring for the connector approaches the electrode terminal by approaching from the direction perpendicular to the card surface with respect to the card mounted on the connector body. Also good.

  Further, in the card connector 1 of the present embodiment described above, a case where the main body side support member 11 is provided between the connecting portion 37 of the contact spring 30 and the substrate 3 is described. However, the card connector according to the present invention is not limited to this. For example, without providing the main body side support member 11, the distance between the opposite side portion 33 a and the connecting portion 37 of the contact spring 30 is ensured. The contact spring side support member may be provided.

  Or you may make it open a space | interval, without providing a supporting member between the opposite side 33a and the connection part 37 of the contact spring 30, and the board | substrate 3. FIG. In this case, when a load is applied to the contact spring 30, the second spring portion 34 bends toward the substrate 3 with the connecting portion 37 as a fulcrum, so that the outer peripheral side of the opposite side portion 33 a is away from the substrate 3. Be inclined. Even if a part of the first spring part 33 comes into contact with the substrate 3 as the bending of the first spring part 33 and the second spring part 34 progresses, the tip of the contact part 35 comes into contact with the substrate 3. Until then, the elastic deformation of the contact spring 30 continues.

  Moreover, in the card connector 1 of this Embodiment mentioned above, in the contact spring 40 and the contact spring 50, the case where the support member is not provided between the connection part and the board | substrate 3 is demonstrated. However, the card connector according to the present invention is not limited to this. For example, a substrate side support member or a contact spring side support member may be provided between the connecting portion and the substrate 3.

  Moreover, in the contact spring 30 of 1st Embodiment mentioned above, the case where the spring rigidity of the 1st spring part 33 and the 2nd spring part 34 is equivalent is demonstrated. However, the connector contact spring according to the present invention is not limited to this. For example, if the ratio of the first spring portion 33 and the second spring portion 34 is in the range of about 4: 6 to 6: 4. Good. Within this range, when a load is applied to the contact portion 35, the first spring portion 33 and the second spring portion 34 can both bend and receive the load in a well-balanced manner.

  Moreover, in the connector contact spring of the present embodiment described above, the case where both the second spring portions 34 and 44 are singular has been described. However, the connector contact spring according to the present invention is not limited to this, and for example, a plurality of second spring portions may be provided.

  In the connector contact spring of the present embodiment described above, the case where both the mounting portions 36 and 46 are singular is described. However, the connector contact spring according to the present invention is not limited to this. For example, a plurality of mounting portions may be provided.

  Next, a contact spring 30b according to a fourth embodiment of the present invention will be described with reference to FIGS.

  In the contact spring 30b according to the fourth embodiment, a protruding portion 60 is formed on a part of the outer peripheral edge of the opposite side portion 33a of the first spring portion 33 of the contact spring 30 according to the first embodiment. It is. In the contact spring 30b, components common to the contact spring 30 of the first embodiment are denoted by the same reference numerals in the drawing, and description thereof is omitted.

  The protruding portion 60 is provided on the outer peripheral edge of the opposite side portion 33 a near the connecting portion 37 between the second spring portion 34 and the opposite side portion 33 a of the first spring portion 33. A second spring portion 34 is continuously formed on the connecting portion 37 so as to protrude toward the inner peripheral side of the first spring portion 33.

  Further, the protruding portion 60 rises to form a step in the direction in which the second spring portion 34 is lifted, in other words, on the side where the contact portion 35 of the second spring portion 34 protrudes. In the present embodiment, the height H of the protruding portion 60 from the surface of the opposite side portion 33a on the contact portion 35 side is 0.03 mm.

  The protruding portion 60 is formed within the range of the width of the connecting portion 37 between the second spring portion 34 and the opposite side portion 33a, that is, within the length of the connecting portion 37 in the longitudinal direction of the opposite side portion 33a. It is desirable.

  The protrusion 60 is provided on the outer peripheral edge of the opposite side portion 33a from which the second spring portion 34 protrudes, as will be described in detail later, as shown in FIG. 12, when the card 2 is inserted into the card connector. The contact portion 35 is pushed down by the card, and the first spring portion 33 and the second spring portion 34 are bent. This is because the outer peripheral edge of the opposite side portion 33 a provided with the protruding portion 60 comes closest to the pad (electrode terminal) 20 a of the card 2.

  Further, the protrusion 60 is formed on the outer peripheral edge within the range of the width of the connecting part 37 between the second spring part 34 and the opposite side part 33a. For example, the protrusion 60 is formed on the outer peripheral edge of the opposite side part 33a. If it is formed on the entire length or near the end of the opposite side portion 33a, such a protruding portion 60 may accidentally contact an extended portion of the pad portion that contacts the adjacent contact spring 30b. Because.

  The protruding portion 60 can be formed, for example, by pressing a part of the outer peripheral edge of the opposite side portion 33a at the same time as the contact spring 30b is punched and formed and raised to the contact portion 35 side.

  Next, a case where the memory card 2 is inserted into the card connector 1 having the contact spring 30b will be described with reference to FIGS.

  Here, an example in which the card connector 1 having the same shape as that shown in FIG. 1 is used will be described. However, the contact spring 30 attached to the card connector 1 in FIG. 1 is replaced with a contact spring 30b. FIG. 11 shows a plan view of the card connector 1 in which the memory card 2 is inserted, and shows a part of the two adjacent contact springs 30b in an enlarged manner.

  As a type of memory card, as shown in FIG. 11, there is one having a width of the pad 20a larger than that of the contact spring 30b. When the memory card 2 having such a pad 20a is used, the pad 20a enters the area of the adjacent contact spring 30b that is not connected. For example, as shown in FIG. It is possible that the side portion overlaps the right side portion 33b of the contact spring 30b adjacent to the left side.

  FIG. 12 is a partially enlarged cross-sectional view of a state in which the card 2 having such a pad 20a is inserted into the card connector, as viewed from the side.

  As shown in FIG. 12, the contact portion 35 is pressed to the substrate 3 side by the card 2, and the second spring portion 34 is a substrate with the opposite side portion 33 a or the connecting portion 37 supported by the main body side support member 11 as a fulcrum. It is bent toward the 3 side. At the same time, the first spring portion 33 is bent so that the central portion protrudes toward the substrate 3 with each end supported by the fixing portion 31 and the main body side support member 11 or with the connecting portion 37 as a fulcrum. .

  Here, the state using the contact spring 30b of the fourth embodiment as shown in FIG. 12 is described in comparison with the case where the contact spring 30 of the first embodiment is used as shown in FIG. To do.

  The bending state of the contact spring 30b of the fourth embodiment shown in FIG. 12 is the same as the bending state of the contact spring 30 of the first embodiment shown in FIG. Here, as the memory card 2, it is assumed that a pad having a width of the pad 20a larger than that of the contact springs 30 and 30b is used like the pad 20a. In this case, it is assumed that the dimensions and positional relationship between the pad 20a and the contact spring 30 are the same as the dimensions and positional relationship between the pad 20a and the contact spring 30b shown in FIG.

  As shown in FIG. 3 and FIG. 12, the card connector 1 is provided in a device provided in the vehicle with the contact springs 30 and 30b of the first and fourth embodiments bent, respectively. When the device vibrates in the state shown in FIG. 11 and FIG. 3 or FIG. 12 when it is provided in the portable terminal device, the first spring portion 33 and the second spring portion 34 are accompanied by the vibration. However, it may bend toward the card 2 side or the substrate 3 side so as to vibrate.

  When the contact spring 30 of the first embodiment shown in FIG. 3 is bent so as to vibrate, the right side of the left contact spring 30b (30) in the same situation as FIG. It may happen that the corner portion 33c of the portion 33b contacts the left corner portion of the pad 20a.

  As shown in FIG. 3, when the card 2 is inserted, the first and second spring portions 34 and 35 are bent, and accordingly, the outer peripheral edge side of the opposite side portion 33a is moved from the original position to the pad 20a. This is because the contact is likely to occur even if the width of the amplitude of the vibration is narrow because it is lifted toward the pad 20a.

  On the other hand, when the contact spring 30b of the fourth embodiment shown in FIG. 12 is bent so as to vibrate, even if the upper end surface of the protrusion 60 of the contact spring 30b contacts the pad 20a, the pad spring 30b A distance close to a certain distance corresponding to the height of the projecting portion 60 is secured between 20a and the end portion 33c of the side portion 33b of the adjacent contact spring 30b. Thus, the wide pad 20a does not contact the adjacent contact spring 30b.

  Next, a contact spring 40a according to a fifth embodiment of the present invention will be described with reference to FIGS.

  The contact spring 40a according to the fourth embodiment forms a protrusion 60 at a part of the outer peripheral edge of one side portion 43b of the first spring portion 43 of the contact spring 40 according to the second embodiment. It is a thing. In the contact spring 40a, components common to the contact spring 40 are denoted by the same reference numerals in the drawing and description thereof is omitted.

  The protruding part 70 is formed so as to rise from the outer peripheral edge of the side part 43b on the side where the second spring part 44 is continuously formed, of the pair of side parts 43b of the first spring part 43. Has been. The rising direction is the same as the direction in which the second spring portion 44 is lifted, in other words, the direction in which the contact portion 45 of the second spring portion 44 protrudes.

  Further, the portion where the protruding portion 70 is formed is near the connecting portion 47 between the second spring portion 44 and the first spring portion 43.

  In the present embodiment, the height H of the protruding portion 70 from the upper surface of the side portion 43b is 0.03 mm. Further, it is desirable that the protruding portion 70 is formed within the range of the width of the connecting portion 47 between the second spring portion 44 and the side portion 43b.

  As shown in FIG. 5, when the card 2 is inserted into the card connector, the protruding portion 70 is provided on the outer peripheral edge of the side portion 43b on the side from which the second spring portion 44 protrudes. This is because the contact portion 45 is pushed down, and the first spring portion 43 and the second spring portion 44 are bent, whereby the outer peripheral edge of the side portion 43b provided with the protruding portion 70 is closest to the card. .

  Although the protrusion 70 is not formed in the contact spring of FIG. 5, the movement of the outer peripheral edges of the first spring portion 43, the second spring portion 44, and the side portion 43b due to card insertion in the case of the contact spring 40a. Are the same as those movements of the contact spring 40.

  Moreover, the protrusion part 70 is formed on the outer peripheral edge within the range of the width of the connecting part 47 between the second spring part 44 and the side part 43b. For example, the protrusion part 70 is formed on the side part 43b. When formed on the entire length of the outer peripheral edge of the outer peripheral edge or near the end of the side edge 43b, the protrusion 70 may come into contact with the extended portion of the pad portion that contacts the adjacent contact spring 40a. Because there is.

  The projecting portion 70 can be formed, for example, by pressing the contact spring 40a at the same time when the contact spring 40a is formed by stamping and raising it to the contact portion 45 side.

  Next, a contact spring 80 according to a sixth embodiment of the present invention will be described with reference to FIGS. 15 to 18.

  FIG. 15 is a perspective view showing a card connector 1A including a contact spring 80 according to the sixth embodiment of the present invention. The card connector 1A has two connector bodies 10A and 10B. Each connector body includes a contact spring 80 according to the sixth embodiment of the present invention, and a card can be mounted on each connector body.

  As shown in FIGS. 16 to 18, the contact spring 80 includes a fixing portion 81 fixed to the connector body 10 </ b> A or 10 </ b> B, a first spring portion 83, a second spring portion 84, and a contact portion 85. I have.

  In the present embodiment, the first spring portion 83 has a substantially U shape, and both end portions of the fixing portion 81 are continuously formed integrally with both end portions of the first spring portion 83. As a result, the fixed portion 81 and the first spring portion 83 form a continuous substantially quadrangular ring.

  The first spring portion 83 includes an opposite side portion 83a located on the opposite side to the fixed portion 81, and a pair of side side portions 83b that connect the fixed portion 81 and the opposite side portion 83a. The first spring portion 83 can be elastically deformed with respect to the fixed portion 81. Further, the fixed portion 81 and the opposite side portion 83a are curved so as to be positioned below the position of the surface of the side portion 83b.

  The second spring portion 84 is continuously provided so as to protrude from the connecting portion 87 of the first spring portion 83 toward the inner peripheral side of the first spring portion 83. The connecting portion 87 is a portion that connects the opposite side portion 83 a of the first spring portion 83 and the second spring portion 84. Thereby, the second spring portion 84 can be elastically deformed with respect to the first spring portion 83.

  The contact portion 85 is divided into two forks and is provided at the tip of the second spring portion 84. Thereby, the contact part 85 can contact the electrode terminal (pad) of the card when the card is mounted.

  Here, the direction from the connecting portion 87 of the second spring portion 84 and the opposite side portion 83 a of the first spring portion 83 to the contact portion 85 is provided so as to coincide with the insertion direction A of the card 2. Thereby, when the card is inserted into the card connectors 10 </ b> A and 10 </ b> B, the electrode terminal of the card can be prevented from being caught on the tip of the second spring portion 84.

  Further, a part of the opposite side part 83a of the first spring part 83 provided with the connecting part 87 is formed with a notch, on the outer peripheral edge of the opposite side part 83a where the notch is formed. The protrusion 90 is formed.

  The portion where the protruding portion 90 is formed is not a portion curved downward from the opposite side portion 83a but a part of the outer peripheral edge at the same height as the side portion 83b.

  This is because the protrusion 90 is formed to have the same function as the protrusions 60 and 70 formed on the contact springs 30b and 40a according to the fourth and fifth embodiments. That is, similarly to the contact springs 30b and 40a according to the fourth and fifth embodiments, the contact spring 80 of the present embodiment also has a card inserted into the card connectors 10A and 10B, and the card is used as the second spring. When the contact portion 85 of the portion 84 is pushed down, the first spring portion 83 and the second spring portion 84 bend, and accordingly, the upper surface of the projecting portion 90 comes closest to the card located above it. Because.

  For this reason, the card | curd can be spaced apart from the opposite side part 83a and the side part 83b by the upper surface of the protrusion part 90 in the position spaced apart by fixed distance.

  The contact spring 80 can be formed by punching and pressing a single plate material, for example, a thin metal plate.

  According to the contact springs according to the fourth to sixth embodiments described above, erroneous contact between the pad of the card and the adjacent contact spring can be prevented by a simple configuration in which the protrusion is provided.

  Further, according to the contact springs according to the fourth to sixth embodiments, the protrusions can be formed simultaneously by press working when the contact springs are formed by punching. The contact spring according to the embodiment can be easily manufactured.

  In the above-described embodiment, the protruding portion is formed by pressing, but the bulge may be formed by soldering or welding marks.

  Further, in the above-described embodiment, the shape of the protruding portion has been described as a rectangle along the longitudinal direction of the opposite side portion 33a when viewed from the plane as shown in FIG. 11, for example, but may be a square, a circle, or a semicircle, A rectangle having a longitudinal direction in a direction orthogonal to the longitudinal direction of the opposite side portion 33a may be used. Further, since the protruding portion separates the card and the contact spring from each other by a certain distance, the protruding portion may be a rod-shaped member having a portion that supports the card at a predetermined height from the upper surface of the contact spring.

  In the above embodiment, the protruding portion is formed on one side of the first spring portion provided with the second spring portion continuously, but may be formed on the other side. Further, as long as the card and the contact spring can be separated from each other by a certain distance, they may be formed at other positions of the first spring portion.

  As described above, the contact spring for a connector according to the present invention and the card connector using the same can be miniaturized and can improve the yield in material processing, and the contact spring and the electrode of the card. This has the effect of preventing erroneous contact with the terminal, and is useful for connector contact springs and card connectors using the same.

DESCRIPTION OF SYMBOLS 1 Card connector 2 Card 2a Electrode terminal 2b Electrode terminal 2c Electrode terminal 3 Board | substrate 10 Connector main body 11 Main body side supporting member 30 1st contact spring (contact spring for connectors)
31 fixed part 31a first fixed part 31b second fixed part 33 first spring part 33a opposite side part (side part)
33b Side (side)
34 Second spring part 35 Contact part 36 Mounting part 37 Connection part 40 Second contact spring (contact spring for connector)
41 fixing part 43 first spring part 43a opposite side part 43b side part 44 second spring part 45 contact part 46 mounting part 47 connection part 50 third contact spring (contact spring for connector)
60, 70, 90 protrusion

Claims (11)

A connector contact having a connector main body capable of holding the card for reading and writing data to and from the card having electrode terminals, and provided on a card connector attached to a substrate, and electrically connecting the card and the substrate In spring,
A fixing portion fixed to the connector body;
From the fixed part, the fixed part is the opposite side part located on the opposite side, and the side part comprising the side part connecting the fixed part and the opposite side part continuously forms an annular shape, and A first spring part elastically deformable with respect to the fixed part;
A second spring portion that is provided continuously from a part of the inner peripheral side of one side portion of the first spring portion, and is elastically deformable with respect to the first spring portion;
A contact portion provided between the fixed portion of the second spring portion and the opposite side portion and capable of contacting the electrode terminal;
A mounting portion that is provided to protrude from the inner peripheral side of the first spring portion continuously from at least a part of the fixing portion, and is mounted on the substrate,
A connecting portion between the one side portion of the first spring portion and the second spring portion is supported by a main body side support member formed on the connector main body, and a distance from the substrate is secured. with there,
The card includes a plurality of electrode terminals, and the side portion of the first spring portion is located at a position facing a part of the side portion of the side portion on which the second spring portion is continuously provided. A protruding portion is formed on a part of the outer peripheral side edge portion of the second spring portion so as to protrude to the contact portion side of the second spring portion and prevent the outer peripheral side edge portion from contacting the adjacent electrode terminal. A contact spring for a connector.   The contact spring for a connector according to claim 1, wherein the fixing portion includes a first fixing portion and a second fixing portion.   The contact spring for a connector according to claim 1 or 2, wherein the contact spring is formed by punching from a single plate-like member. The card is inserted into the connector body along a planar direction;
The insertion direction of the said card | curd corresponds to the direction from the connection part with the said 1st spring part of the said 2nd spring part to the said contact part, The any one of Claim 1 to 3 characterized by the above-mentioned. The contact spring for a connector according to one item.   The space | interval is provided between the connection part of the said 1 side part of a said 1st spring part and the said 2nd spring part, and the said board | substrate, From Claim 1 to Claim 4 characterized by the above-mentioned. Contact spring for connectors according to any one of the above.   The connector contact spring according to any one of claims 1 to 5, wherein the first spring portion and the second spring portion have the same spring rigidity.   The contact spring for a connector according to any one of claims 1 to 6, wherein the second spring portion is formed on the opposite side portion.   The contact spring for a connector according to any one of claims 1 to 6, wherein the second spring portion is formed on the side portion. 9. The contact spring for a connector according to claim 1 , wherein the protruding portion has a portion that holds the card while being separated from the upper surface of the first side portion by a predetermined distance. 10. . 10. The contact for a connector according to claim 1 , wherein a cross-sectional shape of the projecting portion in a direction orthogonal to the projecting direction is any one of a rectangle, a square, a circle, an ellipse, and a triangle. Spring. A card comprising: a connector main body capable of holding a card and attached to a substrate; and the connector contact spring according to any one of claims 1 to 10 mounted on the connector main body. connector.

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