JP4756598B2 - Card board latch - Google Patents

Description

  The invention described in the claims of the present application relates to a card board latch that is disposed on a circuit board at a position facing the card board connector and that locks an end of the card board that is plugged into the card board connector. .

  When mounting a card board, such as a memory module, on a circuit board, such as a solid printed wiring board, to which various electrical components are attached, a card board connector (card edge connector and a card edge connector attached to each circuit board as a pair) And card board latches (sometimes referred to as card edge connector latches) have been proposed. When such a conventionally proposed card board connector and card board latch are used, a connection terminal portion formed by including a plurality of contacts arranged on the end portion of the card board on the card board connector. Is inserted, whereby the card board is electrically connected to the circuit board through the card board connector. Then, the end of the card board facing the connection terminal part is locked and fixed by the card board latch, and further connected to the circuit board through the card board latch as necessary (for example, (See Patent Document 1).

  A card board latch in a combination of a card board connector and a card board latch that has been conventionally proposed as disclosed in the above-mentioned Patent Document 1 is, for example, a card board latch 10 as shown in FIG. . The card board latch 10 includes a base plate 11 fixed to the circuit board, and a conductive plate-like member 12 connected to the grounding portion of the circuit board and a pair of movable arm-like members 13A and 13B. ing. The base member 11 is provided with a pair of board engaging portions 11a that engage with the circuit board, and each board engaging portion 11a has a protrusion 11b that is inserted into a hole provided in the circuit board. (However, the protrusion 11b provided on one of the pair of substrate engaging portions 11a does not appear in FIG. 13). The base member 11 is fixed to the circuit board by inserting these protrusions 11b into holes provided in the circuit board. Each board engaging portion 11a is also provided with a conical protrusion 11c that engages with a through hole provided in a card board described later.

  Each of the pair of movable arm-like members 13A and 13B is formed of, for example, a plate-like member, and is connected to the conductive plate-like member 12 at a portion embedded and supported in the base member 11. The free end portion of the movable arm-shaped member 13A is provided with a locking portion 14A formed by bending, and the free end portion of the movable arm-shaped member 13B is also bent. A locking portion 14B formed by application is provided. The locking portion 14A faces the portion 12A of the conductive plate member 12 disposed on one of the pair of board engaging portions 11a in the base member 11, and the locking portion 14B 11 is opposed to the portion 12B of the conductive plate member 12 disposed on the other of the pair of substrate engaging portions 11a.

  For example, as shown in FIGS. 14 and 15, such a card board latch 10 is arranged on the circuit board 15 (FIG. 15) as opposed to the card board connector 16, and constitutes the card board connector 16. The end 18b of the card substrate 18 having the connection terminal portion 18a (FIG. 15) inserted into the insulating housing 17 is opposed to the connection terminal portion 18a by the engagement portions 14A and 14B. At that time, as shown in FIG. 15, the card board latch 10 is fixed by inserting a protrusion 11 b provided on the board engaging portion 11 a of the base member 11 into a hole provided on the circuit board 15. The card board connector 16 is also fixed by inserting a protrusion 17 a provided on the insulating housing 17 into a hole provided on the circuit board 15.

  A plurality of contacts (not shown) are arranged in an array on the connection terminal portion 18 a of the card substrate 18 inserted into the insulating housing 17 of the card substrate connector 16. Then, as shown in an enlarged view in FIG. 16, the first contact 19 provided in the insulating housing 17 of the card board connector 16 presses and contacts the connection terminal portion 18a from the upper side in FIG. At the same time, the second contact 20 provided in the insulating housing 17 of the card board connector 16 is pressed and contacted from below in FIG.

  The position where the first contact 19 in the connecting terminal portion 18a is pressed and contacted from the upper side in FIG. 16 and the position where the second contact 20 is pressed and contacted from the lower side in FIG. The position where the second contact 20 is pressed and contacted from the lower side in FIG. 16 enters the inner side of the card substrate 18 as compared to the position where the first contact 19 is pressed from the upper side in FIG. Thereby, the end 18b facing the connection terminal 18a is moved upward in each of FIGS. 14 and 15 on the card board 18 in which the connection terminal 18a is inserted into the insulating housing 17 of the card board connector 16. The force to try will act.

  When the end portion 18b of the card substrate 18 is locked by the locking portions 14A and 14B of the card substrate latch 10, as shown in FIGS. 14 and 15, the end portion 18b of the card substrate 18 is provided thereon. Each of the pair of through holes 18c is fitted into a conical protrusion 11c provided in the board engaging portion 11a of the base member 11 of the card board latch 10, so that the locking portion 14A and the conductive plate in the card board latch 10 are connected. Between the portion 12 </ b> A of the plate-like member 12 and between the locking portion 14 </ b> B and the portion 12 </ b> B of the conductive plate-like member 12. Then, the locking portions 14A and 14B come into contact with the end portion 18b from the upper side in each of FIGS. 14 and 15, thereby locking the end portion 18b with the locking portions 14A and 14B.

  The locking portions 14A and 14B for locking the end portion 18b of the card board 18 are connected to the card board 18 on the circuit board 15 through the movable arm-like members 13A and 13B and the conductive plate-like member 12, respectively. Also plays the role of connecting to the department.

  The end portion 18b of the card board 18 fits the through hole 18c into the conical protrusion 11c provided in the card board latch 10 so that the locking portion 14A and the portion 12A of the conductive plate member 12 in the card board latch 10 are obtained. , And between the locking portion 14B and the portion 12B of the conductive plate-like member 12, the locking portions 14A and 14B are temporarily moved as shown by phantom lines in FIG. 17 is deformed and moved in the direction away from the card substrate 18 from the position shown by the solid line in FIG. 17, and thereafter, the elastic arm members 13A and 13B provided with the locking portions 14A and 14B respectively are elastically moved. In FIG. 17, the position is returned to the position indicated by the solid line.

  In releasing the end 18b of the card substrate 18 from the state of being locked by the locking portions 14A and 14B, the movable arm members 13A and 13B with the locking portions 14A and 14B are connected to the locking portions. An operation of moving 14A and 14B away from the end 18b is added. When the operation of separating the locking portions 14A and 14B from the end portion 18b with respect to the movable arm-shaped members 13A and 13B is completed, the movable arm-shaped members 13A and 13B are moved by the elastic force. Return to the original position with 14B.

Japanese Patent Laid-Open No. 2004-235142 (pages 5 to 8, FIGS. 1 to 5)

  In the card board latch 10 conventionally proposed as described above, the end 18b of the card board 18 in which the connection terminal part 18a is inserted into the insulating housing 17 of the card board connector 16 is engaged. For example, the locking portions 14A and 14B formed by bending each of the movable arm-like members 13A and 13B made of a plate-like member are connected to the end portion 18b of the card substrate 18, for example. Under the locked state, the card substrate 18 always receives a force to move the end 18b acting on the card substrate 18 upward in each of FIGS. Therefore, in addition to such a force, for example, when a further force in the same direction is applied to the locking portions 14A and 14B due to vibration or impact exerted on the circuit board, one or both of the locking portions 14A and 14B are Undesirable deformations such as bending deformation, distortion deformation, and torsional deformation may occur, whereby the end 18b of the card substrate 18 may not be properly locked by the locking portions 14A and 14B.

  Further, the end 18b of the card substrate 18 is between the locking portion 14A of the card substrate latch 10 and the portion 12A of the conductive plate member 12, and between the locking portion 14B and the portion 12B of the conductive plate member 12. When arranged between them, the deformation movement as shown by the phantom line in FIG. 17 occurring in the locking portions 14A and 14B is caused to bend, strain, or twist in one or both of the locking portions 14A and 14B. As a result, the end 18b of the card board 18 may not be properly locked by the locking portions 14A and 14B.

  When the end 18b of the card substrate 18 is not properly locked by the locking portions 14A and 14B, the card substrate 18 passes through the locking portions 14A and 14B, the movable arm-shaped members 13A and 13B, and the conductive plate-shaped member 12. When the circuit board 15 is connected to the grounding portion, the contact resistance value between the card substrate 18 and the locking portions 14A and 14B becomes unstable, and the ground connection for the card substrate 18 is not stably performed. There are also harmful effects.

  Therefore, in order to avoid such inconvenience, for example, the thickness and width of the plate-like members constituting the movable arm-like members 13A and 13B in which the locking portions 14A and 14B are formed by bending, respectively. It is conceivable that the rigidity of the engaging portions 14A and 14B is made difficult to be subjected to undesired deformation. However, when the thickness and width of the plate-like members constituting the movable arm-like members 13A and 13B are increased to increase the rigidity, the card substrate for the movable arm-like members 13A and 13B with the locking portions 14A and 14B is used. The operation of moving the locking portions 14A and 14B in the state where the 18 end portions 18b are locked away from the end portions 18b becomes difficult, and the weight of the card board latch 10 is reduced. There is a disadvantage that it increases.

  In view of such a point, the invention described in the claims of the present application is a movable arm provided with a locking portion that locks one end portion of a card board in which a connection terminal portion is inserted and connected to a card board connector. The movable arm-shaped member is configured to include a movable member, and the locking portion is not likely to be undesirably deformed without an increase in rigidity that impairs the operability of the movable arm-shaped member. Provided is a card board latch which is used in a state where a state can be stably maintained and which is arranged at a position facing a card board connector in a circuit board.

A card board latch according to the invention described in any one of claims 1 to 4 in the claims of the present application (hereinafter referred to as the present invention) is a ground connection portion connected to a ground portion in a circuit board. A conductive plate-like member provided with a plane portion forming a plane parallel to the substrate surface of the circuit board, a movable arm-like member connected to the conductive plate-like member , the conductive plate-like member and the movable plate And a base member disposed on the circuit board that supports the arm-like member, and latches one end of the card board that is brought close to the conductive plate-like member into the free end of the movable arm-like member. parts and together with the projects from the free end is movable in the direction along the board surface of the circuit board and the Rukakarigo piece provided, the free end of the movable arm-like member in the plane of the conductive plate member near portion serving parts, portions thereof round A groove shape that is bent along the board surface of the circuit board and is further bent along the board surface of the circuit board. An engaging guide portion is provided for guiding the movement of the engaging piece portion in a state where the engaging piece portion is in contact engagement with the conductive piece-like member and the movable arm-like member. Is integrally formed of a metal plate material , and is attached to a circuit board and is used by being arranged at a position facing the card board connector to which the other end of the card board is inserted and connected.

  The card board latch according to the present invention configured as described above is arranged and used at a position facing a card board connector attached thereto on a circuit board. In this case, a pair of opposed end portions are used. The other end of the pair of opposing ends of the card board that is inserted and connected to the card board connector is brought close to the conductive plate member, and the end of the card board brought close to the conductive plate member, The locking portion provided at the free end of the movable arm-shaped member is locked. When the end of the card substrate is brought close to the conductive plate-like member, the locking portion is temporarily moved to the movable arm-like member when the end of the card substrate is placed in a predetermined position close to the conductive plate-like member. Is moved in a direction away from the card substrate. When the end portion of the card substrate is placed at a predetermined position close to the conductive plate member, the locking portion returns to the original position with the displacement of the movable arm member, and the conductive plate member The end portion of the card substrate placed at a predetermined position close to is locked.

  Also, when releasing the end of the card substrate from the state of being locked by the locking portion provided at the free end of the movable arm-shaped member, the card substrate is locked to the movable arm-shaped member with the locking portion. An operation for moving the part away from the card substrate is added. Then, when the operation of moving the locking portion for the movable arm-shaped member away from the card substrate is completed, the movable arm-shaped member returns to the original position with the locking portion.

As described above, when the locking portion is moved in a direction away from the card substrate, and thereafter returned to the original position, the movable arm-like member is displaced accordingly. And the engagement piece part which protrudes from the free end part of the movable arm-shaped member which displaces with the movement of a latching | locking part becomes the vicinity of the free end part of the movable arm-shaped member in the plane part of an electroconductive plate-shaped member. portion, that portion is bent to go in a direction perpendicular to the substrate surface of the circuit board, further, the bending Ori is bent to go in the direction along the board surface of the circuit board processing is provided is subjected, circuit The circuit board is moved in the direction along the board surface of the circuit board while being brought into contact with and engaged with an engagement guide part that forms a groove-like part extending along the board surface of the board . As a result, when the locking portion is moved in the direction away from the card substrate with the displacement of the movable arm-like member, the force applied to the locking portion is engaged under the guidance of the engagement guide portion. Since it is received by the engagement guide part that contacts and engages through the one part, it is difficult for the locking part to be undesirably deformed, and with the movement of the movable arm-shaped member of the locking part. The movement is very smooth.

  Furthermore, the force in the direction of moving the card substrate away from the card substrate, which is applied by the vibration or impact transmitted to the latching portion in which the end portion of the card substrate is locked, is also guided by the engagement guide portion. Since the engagement guide portion engaged with the contact portion is received via the engagement piece portion that moves to the engagement portion, it is difficult for the engagement portion to be undesirably deformed due to vibration or impact transmitted thereto.

In the card board latch according to the present invention, as described above, the engaging piece portion is projected from the free end portion of the movable arm-like member provided with the locking portion, and the engaging piece portion is electrically conductive. The flat plate portion of the plate-like member is in contact engagement with an engagement guide portion provided in the vicinity of the free end portion of the movable arm-like member, and receives guidance from the engagement guide portion during the movement. Thus, when the end portion of the card substrate is brought close to the conductive plate-like member, or when the end portion of the card substrate is released from the state of being locked by the locking portion, the locking portion becomes a movable arm-like member. The force applied to the locking portion is guided by the engagement guide portion when it is moved in the direction away from the card substrate with the displacement of the card, and further, when vibration or impact is transmitted to the locking portion. Move Via the engagement piece portion which is a shall, it is received by the engaging guide portion in contact engagement, the engaging portion is assumed to hardly cause undesired deformation. Therefore, the locking portion is not easily deformed undesirably without increasing the rigidity that impairs the operability required for the displacement of the movable arm-shaped member, and the locking state is appropriate for the end portion of the card substrate. Can be maintained stably. Further, since the rigidity of the movable arm-like member cannot be increased, an increase in the overall weight is also avoided.

In particular, groove-like portion engaging the guide portion extends along the substrate surface of the circuit board, i.e., since a groove-like portion extending along the direction of movement of the free end of the movable arm-shaped member, like the movable arm is intended to engaging piece portion protruding from the free end portion of the member is disposed in the groove-like portion, the movement takes place very smoothly accompanied by displacement of the movable arm-like member engaging portion, the engaging portion There operational effect that is assumed to hardly cause undesired deformation is assumed that remarkable.

Further, as in the card substrate latch according to the present invention described in claim 3 , when the locking portion locks one end portion of the card substrate, the connection of the card substrate to the grounding portion in the circuit board is movable. In the case of using the arm-like member and the conductive plate-like member, the contact resistance value between the card substrate and the engaging portion is stabilized because the engaging portion is unlikely to cause an undesirable deformation. Thus, the ground connection for the card substrate is stably performed.

  BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention will be described with reference to the embodiments of the present invention described below.

  FIG. 1 shows an example of a card board latch according to the present invention. In this example, the card substrate latch 30 is configured.

  The card board latch 30 is configured such that a conductive plate member 32 and a pair of movable arm members 33A and 33B are supported by a base member 31 fixed to a circuit board such as a solid printed wiring board. The base member 31 is made of, for example, an insulating material such as synthetic resin, and the conductive plate-like member 32 and the movable arm-like members 33A and 33B are made of, for example, a metal thin plate material.

  The base member 31 is formed with a member support portion 31a for supporting the conductive plate-like member 32 and the movable arm-like members 33A and 33B, and both end portions of the member support portion 31a, and is engaged with the circuit board. A pair of board engaging portions 31b is provided, and each board engaging portion 31b is formed with a protrusion 31c inserted into a hole provided in the circuit board (however, the pair of board engaging portions 31b). The protrusion 31c provided on one of them does not appear in FIG. By inserting these protrusions 31c into holes provided in the circuit board, the base member 31 is fixed to the circuit board. Each board engaging portion 31b is also formed with a conical protrusion 31d that engages with a through hole provided in a card board, which will be described later.

As shown in FIG. 1, the conductive plate-like member 32 includes a plurality of ground connection portions 32 b connected to a ground portion in a circuit board to which the base member 31 is fixed, and a pair of board engagements in the base member 31. Planar portions 32A and 32B, which are respectively arranged on the portion 31b and form a plane parallel to the substrate surface of the circuit board, are provided, and further, an engagement guide portion 34A is provided on the planar portion 32A. An engagement guide portion 34B is provided on the flat surface portion 32B. As shown more clearly in FIGS. 2 and 3 showing the engagement guide portion 34A including the engagement guide portion 34A in the card board latch 30, the engagement guide portion 34A is provided at the free end portion of the movable arm-like member 33A in the plane portion 32A . A portion that is in the vicinity is provided with a bending process in which the portion is bent in a direction orthogonal to the board surface of the circuit board and further bent in a direction along the board surface of the circuit board. In addition, a groove-like portion extending along the substrate surface of the circuit board is formed . Similarly, the engagement guide portion 34B is also free of the movable arm-like member 33B in the plane portion 32B, as shown more clearly in FIGS. 4 and 5 showing the portion including the engagement guide portion 34B in the card board latch 30. The portion near the end portion is bent so that the portion is bent in a direction perpendicular to the substrate surface of the circuit board, and further, bent in a direction along the substrate surface of the circuit board. And a groove-like portion extending along the substrate surface of the circuit board is formed .

  Further, in the conductive plate-like member 32, the engagement contact piece 32c extends in parallel with the substrate engagement portion 31b of the base member 31 at a position near the flat portions 32A and 32B. Is provided.

  Each of the pair of movable arm-like members 33A and 33B is integrated at a portion of the base member 31 that is buried and supported by the member support portion 31a, and is connected to the conductive plate-like member 32 and connected thereto. It has free ends that extend in opposite directions from each other. The free end portion of the movable arm-shaped member 33A is provided with a locking portion 35A formed by bending, and the free end portion of the movable arm-shaped member 33B is also bent. A locking portion 35B formed in this manner is provided. The locking portion 35 </ b> A faces the flat portion 32 </ b> A of the conductive plate member 32, and the locking portion 35 </ b> B faces the flat portion 32 </ b> B of the conductive plate member 32. And since the engagement guide part 34A is provided in the plane part 32A of the conductive plate-like member 32, it is assumed that it is provided in a portion near the free end part of the movable arm-like member 33A. Since the engagement guide portion 34B is provided on the flat surface portion 32B of the conductive plate-like member 32, it is assumed that the engagement guide portion 34B is provided in a portion near the free end portion of the movable arm-like member 33B.

  Further, as clearly shown in FIGS. 2 and 3, an engagement piece portion 36 </ b> A that protrudes outward from the free end portion of the movable arm-like member 33 </ b> A is provided. This engagement piece portion 36A is disposed in a groove-like portion formed by an engagement guide portion 34A provided on the flat surface portion 32A of the conductive plate-like member 32, and in FIGS. 2 and 3 of the engagement guide portion 34A. It is possible to take a state of being in contact engagement with two locations on the upper side and the lower side.

  Then, the engagement piece portion 36A smoothly moves with the displacement of the movable arm-shaped member 33A in the direction indicated by the arrow α in FIG. When the engagement piece portion 36A moves in the direction indicated by the arrow α while being engaged with the engagement guide portion 34A, the engagement guide portion 34A forming a groove-like portion is formed. However, it guides the movement of the engaging piece 36A. Therefore, the groove-shaped portion formed by the engagement guide portion 34A is formed to extend along the moving direction of the engagement piece portion 36A, that is, the direction indicated by the arrow α.

  Similarly, as clearly shown in FIGS. 4 and 5, an engagement piece portion 36 </ b> B protruding outward from the free end portion of the movable arm-like member 33 </ b> B is provided. This engagement piece portion 36B is disposed in a groove-like portion formed by an engagement guide portion 34B provided on the flat surface portion 32B of the conductive plate-like member 32. In FIG. 4 and FIG. It is possible to take a state of being in contact engagement with two locations on the upper side and the lower side.

  Then, the engagement piece portion 36B moves smoothly with the displacement of the movable arm-shaped member 33B in the direction indicated by the arrow α in FIG. 4 in a state where the engagement piece portion 36B contacts and engages with the engagement guide portion 34B. When the engagement piece portion 36B moves in the direction indicated by the arrow α while being engaged with the engagement guide portion 34B, the engagement guide portion 34B that forms a groove-like portion is provided. However, it guides the movement of the engagement piece 36B. Therefore, the groove-shaped portion formed by the engagement guide portion 34B is formed as extending along the moving direction of the engagement piece portion 36B, that is, the direction indicated by the arrow α.

  The conductive plate-like member 32 and the pair of movable arm-like members 33A and 33B as described above are integrated by, for example, punching and bending a single metal plate having elasticity. It is formed. A portion where the pair of movable arm members 33 </ b> A and 33 </ b> B branches from the conductive plate member 32 is embedded in the member support portion 31 a of the base member 31.

  Under such circumstances, for example, as shown in FIG. 6, the card board latch 30 is disposed on the circuit board 40 so as to face the card board connector 41, and constitutes an insulating housing constituting the card board connector 41. The end portion 45b of the card substrate 45, into which the connection terminal portion 45a is inserted, is opposed to the connection terminal portion 45a by the engagement portions 35A and 35B. At that time, as shown in FIG. 7, the card board latch 30 is fixed by inserting a protrusion 31c provided on the board engaging portion 31b of the base member 31 into a hole provided on the circuit board 40, and As shown in FIG. 6, the card board connector 41 is also fixed by inserting a protrusion 42 a provided on the insulating housing 42 into a hole provided on the circuit board 40.

  When the end portion 45b of the card substrate 45 is locked by the locking portions 35A and 35B of the card substrate latch 30, the end portion 45b of the card substrate 45 is moved to the card substrate latch as shown in FIGS. The conical shape provided in the pair of board engaging portions 31b of the base member 31 of the card board latch 30 is provided with the pair of through holes 45c provided in the end portion 45b. The protrusion 31d is fitted between the locking portion 35A of the card board latch 30 and the flat portion 32A of the conductive plate member 32, and between the locking portion 35B and the flat portion 32B of the conductive plate member 32. Arranged. Then, as shown in FIG. 7, the engagement piece portion 36 </ b> A provided at the free end portion of the movable arm-like member 33 </ b> A is formed into a groove shape formed by the engagement guide portion 34 </ b> A provided at the flat surface portion 32 </ b> A of the base member 31. The locking portion 35A comes into contact with the end portion 45b of the card substrate 45 from the upper side in FIG. Similarly, the engaging piece portion 36B provided at the free end of the movable arm-like member 33B is also arranged in the groove-like portion formed by the engaging guide portion 34B provided on the flat surface portion 32B of the base member 31. The locking portion 35B comes into contact with the end portion 45b of the card substrate 45 from the upper side in FIG. As a result, the end portions 45b are locked by the locking portions 35A and 35B.

  At this time, the pair of engaging contact piece portions 32c provided on the conductive plate-like member 32 are electrically connected between the locking portion 35A and the flat portion 32A of the conductive plate-like member 32 and between the locking portion 35B and the conductive portion. The end portion 45b of the card substrate 45 arranged between the flat plate portion 32B of the adhesive plate member 32 is engaged and contacted from the lower side in FIG. Thereby, the pair of engagement contact pieces 32c is applied to the end 45b of the card substrate 45 from the lower side to the upper side in FIG. 8, that is, the force pressing the end 45b against the locking portions 35A and 35B. Act. As a result, the end portion 45b of the card substrate 45 is held between the locking portions 35A and 35B and the pair of engaging contact piece portions 32c.

  The locking portions 35A and 35B for locking the end portion 45b of the card substrate 45 are passed through them, and further through the movable arm-shaped members 33A and 33B and the conductive plate-shaped member 32, the card substrate 45 is connected to the conductive plate. It also plays a role of connecting to the grounding part in the circuit board 40 to which the plurality of grounding connection parts 32b provided on the member 32 are connected. Further, when a grounding portion is provided at a portion of the end portion 45b of the card substrate 45 where the engagement contact piece portion 32c is engaged and engaged, the engagement contact piece portion 32c further passes through the conductive contact plate 32c. The card substrate 45 plays a role of coupling the card substrate 45 to the ground portion in the circuit board 40 to which the plurality of ground connection portions 32 b provided on the conductive plate-like member 32 are connected.

  7 and 8, the end 45b of the card board 45 is brought close to the conductive plate member 32, and the through hole 45c is fitted into the conical protrusion 31d provided in the card board latch 30. When the card board latch 30 is disposed between the locking portion 35A and the flat surface portion 32A of the conductive plate-like member 32 and between the locking portion 35B and the flat surface portion 32B of the conductive plate-like member 32. For example, the locking portion 35A is temporarily deformed and moved away from the card substrate 45 from the position shown in FIG. 7, for example, and similarly, the locking portion 35B is temporarily moved to the card. It is deformed and moved away from the substrate 45. Then, after that, the locking portion 35A is returned to the original position shown in FIG. 7, for example, by the elastic force of the movable arm-like member 33A provided with the locking portion 35A to lock the end 45b of the card substrate 45. Similarly, the locking portion 35B is returned to the original position by the elastic force of the movable arm-like member 33B provided with the locking portion 35B to lock the end portion 45b of the card substrate 45.

  In releasing the end 45b of the card substrate 45 from the state of being locked by the locking portions 35A and 35B, the movable arm-shaped members 33A and 33B with the locking portions 35A and 35B are connected to the locking portions. An operation of deforming and moving 35A and 35B so as to be separated from the card substrate 45 is added. When the operation of moving the locking portions 35A and 35B with respect to the movable arm-shaped members 33A and 33B away from the card substrate 45 is completed, the movable arm-shaped members 33A and 33B are moved by the elastic force. Return to the original position with 35B.

  When the engaging portions 35A and 35B are deformed and moved away from the card substrate 45, and thereafter returned to the position before the movement, the movable arm-like members 33A and 33B are displaced. At that time, engaging piece portions 36A and 36B protruding from the free ends of the movable arm-like members 33A and 33B that are displaced in accordance with the movement of the locking portions 35A and 35B are provided on the conductive plate-like member 32. The engagement guide portions 34A and 34B are respectively disposed in groove-shaped portions, and the engagement guide portion 34A is located at two locations on the upper side and the lower side in FIGS. 2 and 3, and the engagement guide portion. In FIG. 4 and FIG. 5, 34B is in contact with and engaged with two locations on the upper side and the lower side, respectively, and moves under the guidance of the engagement guide portions 34A and 34B.

  Thereby, for example, when the locking portions 35A and 35B are moved in the direction away from the card substrate 45 with the displacement of the movable arm-shaped members 33A and 33B, the force applied to the locking portions 35A and 35B is engaged. 2A and 2B in FIG. 2 and FIG. 3 in the engagement guide portion 34A in which the locking portion 35A is brought into contact with and engaged through the engagement piece portions 36A and 36B moving under the guidance of the guide portions 34A and 34B. 4 and the engagement guide portion 34B with which the locking portion 35B comes into contact and engagement are received at two locations on the upper side and the lower side in FIGS. 4 and 5, so that the locking portions 35A and 35B are not attached. It is difficult to cause a desired deformation.

  In particular, the engagement guide portion 34A forms a groove-like portion extending along the moving direction of the free end portion of the movable arm-like member 33A, and the engagement piece portion 36A protrudes from the free end portion of the movable arm-like member 33A. However, it is arranged in the groove-like part, and when it moves, it is in contact with and engaged with the groove-like part and receives guidance by the groove-like part, and the engagement guide part 34B is free in the movable arm-like member 33B. An engaging piece 36B that protrudes from the free end of the movable arm-like member 33B is arranged in the groove-like portion to extend along the moving direction of the end portion. Since it is assumed that the groove-shaped portion is guided by contact engagement with the shaped portion, the movement of the engaging portions 35A and 35B with the movement of the movable arm-like members 33A and 33B is performed very smoothly.

  Further, when vibration or impact applied to the card substrate latch 30 is transmitted to the locking portions 35A and 35B in a state where the end portion 45b of the card substrate 45 is locked, the locking portions 35A and 35B are caused by the vibration or impact. It is conceivable that a force is applied to 35B in such a direction as to move them away from the card substrate 45, and such a force is also applied to the engaging piece portions protruding from the free end portions of the movable arm-like members 33A and 33B. Since they are received by the engagement guide portions 34A and 34B with which they are brought into contact with each other via 36A and 36B, the locking portions 35A and 35B are unlikely to cause undesired deformation due to vibration or impact transmitted thereto. .

  As a result, the movable arm-like members 33A and 33B are not provided with increased rigidity that impairs the operability required for the displacement, and the locking arms provided at the free ends of the movable arm-like members 33A and 33B, respectively. The portions 35 </ b> A and 35 </ b> B are unlikely to be deformed undesirably and can stably maintain an appropriate locking state with respect to the end portion 45 b of the card substrate 45. In addition, since the rigidity of the movable arm members 33A and 33B cannot be increased, an increase in the weight of the entire card board latch 30 is also avoided.

  Note that the engagement guide portions 34A and 34B provided on the flat surface portions 32A and 32B of the conductive plate-like member 32, respectively, and further, the engagement piece portions provided on the free ends of the movable arm-like members 33A and 33B, respectively. Each of the shapes of 36A and 36B is not limited to the above-described example, and can take various shapes that are sufficient for each role.

  9 and 10 show another example portion of the card board latch according to the present invention. The example having the portion shown in FIG. 9 and FIG. 10 is generally configured in the same manner as the card board latch 30 shown in FIG.

  9 shows a portion corresponding to the portion shown in FIG. 2 in the card board latch 30 shown in FIG. 1, and FIG. 10 shows the portion shown in FIG. 4 in the card board latch 30 shown in FIG. The corresponding part is shown. 9, parts and members corresponding to the respective parts and members shown in FIG. 2 are denoted by the same reference numerals as those in FIG. 2, and redundant description thereof is omitted. In FIG. 10, in FIG. Parts and members corresponding to the respective parts and members shown are denoted by the same reference numerals as those in FIG. 4, and redundant description thereof is omitted.

In the part shown in FIG. 9, as an alternative to the engaging piece 36A provided at the free end of the movable arm-like member 33A shown in FIG. 2, it is outward from the free end of the movable arm-like member 33A. An engagement piece 46A that protrudes toward the center is provided. The engaging piece portion 46A is disposed in a groove-like portion formed by an engaging guide portion 34A provided in a portion near the free end portion of the movable arm-like member 33A in the flat portion 32A of the conductive plate-like member 32. Thus, the engagement guide portion 34A can be brought into a contact engagement state. Then, the engagement piece portion 46A is bent and is provided on the substrate engagement portion 31b of the base member 31 along the direction along the circuit board surface of the circuit board in which the groove portion formed by the engagement guide portion 34A extends. It has a portion extending toward a conical protrusion (not shown in FIG. 9) that engages with a through hole provided in the substrate.

  Such an engagement piece portion 46A is also capable of moving smoothly with the displacement of the movable arm-like member 33A in a state of being brought into contact with the engagement guide portion 34A. When the portion 46A moves while being in contact with and engaged with the engagement guide portion 34A, the engagement guide portion 34A forming a groove-like portion guides the movement of the engagement piece portion 46A. At this time, the engagement piece portion 46A is bent and has a portion along the direction in which the groove portion formed by the engagement guide portion 34A extends, whereby the engagement by the engagement guide portion 34A forming the groove portion. Guidance for the movement of the combined piece 46A is performed more smoothly and reliably.

Further, in the portion shown in FIG. 10, as an alternative to the engaging piece 36B provided at the free end of the movable arm-like member 33B shown in FIG. 4, the free end of the movable arm-like member 33B is used. An engagement piece 46B that protrudes outward is provided. The engaging piece portion 46B is disposed in a groove-like portion formed by an engaging guide portion 34B provided in a portion near the free end portion of the movable arm-like member 33B in the flat portion 32B of the conductive plate-like member 32. Therefore, the engagement guide portion 34B can be brought into contact with and engaged. Then, the engagement piece portion 46B is bent and provided on the substrate engagement portion 31b of the base member 31 along the direction along the circuit board surface of the circuit board in which the groove portion formed by the engagement guide portion 34B extends. It has a portion extending toward a conical protrusion (not shown in FIG. 10) that engages a through hole provided in the substrate.

  Such an engagement piece portion 46B is also capable of moving smoothly with the displacement of the movable arm-like member 33B in a state of being brought into contact engagement with the engagement guide portion 34B. When the part 46B moves while being in contact with and engaged with the engagement guide part 34B, the engagement guide part 34B forming a groove-like part guides the movement of the engagement piece part 46B. At that time, the engagement piece portion 46B is bent and has a portion along the direction in which the groove portion formed by the engagement guide portion 34B extends, whereby the engagement by the engagement guide portion 34B forming the groove portion. Guidance for the movement of the combined piece 46B is performed more smoothly and reliably.

  The card board latch according to another example of the card board latch according to the present invention having the movable arm-like members 33A and 33B provided with the engaging pieces 46A and 46B is also shown in FIG. The same effect as that of the card board latch 30 shown in FIG. 1 is obtained.

  11 and 12 show a further example of the card board latch according to the present invention. The example having the portion shown in FIG. 11 and FIG. 12 is generally configured in substantially the same manner as the card board latch 30 shown in FIG.

  11 shows a portion corresponding to the portion shown in FIG. 2 in the card board latch 30 shown in FIG. 1, and FIG. 12 shows the portion shown in FIG. 4 in the card board latch 30 shown in FIG. The corresponding part is shown. In FIG. 11, parts and members corresponding to the respective parts and members shown in FIG. 2 are denoted by the same reference numerals as those in FIG. 2, and redundant description thereof is omitted. In FIG. 12, FIG. Parts and members corresponding to the respective parts and members shown are denoted by the same reference numerals as those in FIG. 4, and redundant description thereof is omitted.

In the part shown in FIG. 11, as an alternative to the engaging piece 36A provided at the free end of the movable arm-like member 33A shown in FIG. 2, the outer side from the free end of the movable arm-like member 33A is used. An engagement piece 47A that protrudes toward the center is provided. The engagement piece portion 47A is disposed in a groove-like portion formed by an engagement guide portion 34A provided in a portion of the flat surface portion 32A of the conductive plate-like member 32 that is near the free end portion of the movable arm-like member 33A. Thus, the engagement guide portion 34A can be brought into a contact engagement state. Then, the engagement piece portion 47A is bent and provided on the substrate engagement portion 31b of the base member 31 along the direction along the substrate surface of the circuit board in which the groove portion formed by the engagement guide portion 34A extends. It has a portion extending toward the opposite side of the conical protrusion (not shown in FIG. 11) that engages with a through hole provided in the substrate.

  Such an engagement piece portion 47A can also move smoothly with the displacement of the movable arm-like member 33A in a state of being brought into contact engagement with the engagement guide portion 34A. When the portion 47A moves while being in contact with and engaged with the engagement guide portion 34A, the engagement guide portion 34A forming a groove-like portion guides the movement of the engagement piece portion 47A. At this time, the engagement piece portion 47A is bent and has a portion along the direction in which the groove portion formed by the engagement guide portion 34A extends, whereby the engagement by the engagement guide portion 34A forming the groove portion. Guidance for the movement of the combined piece 47A is performed more smoothly and reliably.

Further, in the portion shown in FIG. 12, as an alternative to the engaging piece 36B provided at the free end of the movable arm-like member 33B shown in FIG. 4, from the free end of the movable arm-like member 33B. An engagement piece 47B that protrudes outward is provided. The engagement piece portion 47B is disposed in a groove-like portion formed by an engagement guide portion 34B provided in a portion near the free end portion of the movable arm-like member 33B in the flat portion 32B of the conductive plate-like member 32. Therefore, the engagement guide portion 34B can be brought into contact with and engaged. Then, the engagement piece portion 47B is bent and provided on the substrate engagement portion 31b of the base member 31 along the direction along the substrate surface of the circuit board in which the groove portion formed by the engagement guide portion 34B extends. It has a portion extending toward the side opposite to the conical protrusion (not shown in FIG. 10) that engages with a through hole provided in the substrate.

  Such an engagement piece portion 47B is also capable of moving smoothly with the displacement of the movable arm-like member 33B in a state of being brought into contact with and engaged with the engagement guide portion 34B. When the part 47B moves while being in contact with and engaged with the engagement guide part 34B, the engagement guide part 34B forming a groove-like part guides the movement of the engagement piece part 47B. At that time, the engagement piece portion 47B is bent and has a portion along the direction in which the groove portion formed by the engagement guide portion 34B extends, whereby the engagement guide portion 36B forming the groove portion engages. Guidance for the movement of the combined piece 47B is performed more smoothly and reliably.

  A card board latch according to still another example of the card board latch according to the present invention provided with the movable arm-like members 33A and 33B provided with the engaging pieces 47A and 47B is also shown in FIG. It is used in the same manner as the latch 30, so that the same effect as the case of the card board latch 30 shown in FIG. 1 can be obtained.

  The card board latch according to the present invention as described above includes a movable arm-like member provided with a locking portion for locking one end portion of a card board whose connection terminal portion is inserted and connected to the card board connector. In addition, the locking portion is less likely to cause undesired deformation without increasing the rigidity that impairs the operability of the movable arm-like member, and the appropriate locking state with respect to one end portion of the card substrate can be stably maintained. As a thing, it can be widely applied to various electronic devices.

It is a perspective view which shows an example of the card board latch which concerns on this invention. It is a fragmentary perspective view which shows the part in the example shown by FIG. It is a partial rear view which shows the part in the example shown by FIG. It is a fragmentary perspective view which shows the part in the example shown by FIG. It is a partial rear view which shows the part in the example shown by FIG. It is a partially broken side view which shows the use condition of the example shown by FIG. It is a side view which shows the use condition of the example shown by FIG. It is a partially broken side view which shows the use condition of the example shown by FIG. It is a fragmentary perspective view which shows the part of the other example of the card board latch which concerns on this invention. It is a fragmentary perspective view which shows the part of the other example of the card board latch which concerns on this invention. It is a fragmentary perspective view which shows the part of the other example of the card board latch which concerns on this invention. It is a fragmentary perspective view which shows the part of the further another example of the card board latch which concerns on this invention. It is a perspective view which shows the conventional card board latch. It is a perspective view which shows the use condition of the conventional card board latch. It is a partially broken side view which shows the use condition of the conventional card board latch. It is a partially broken side view which shows the use condition of the card board connector used with the conventional card board latch. It is a side view which shows the use condition of the conventional card board latch.

Explanation of symbols

  30 ... Card board latch, 31 ... Base member, 31a ... Member support part, 31b ... Board engagement part, 31c, 42a ... Protrusion, 31d ... Conical protrusion, 32. .. Conductive plate-like members, 32A, 32B... Planar portion, 32b .. Ground connection portion, 32c... Engagement contact portion, 33A, 33B .. Moveable arm-like member, 34A, 34B. -Engagement guide part, 35A, 35B ... Locking part, 36A, 36B, 46A, 46B, 47A, 47B ... Engagement piece part, 40 ... Circuit board, 41 ... Card board connector, 42 ... Insulating housing, 45 ... Card substrate, 45a ... Connection terminal, 45b ... End, 45c ... Through-hole

Claims (4)

A conductive plate member provided with a ground connection portion connected to a ground portion in the circuit board and a plane portion forming a plane parallel to the substrate surface of the circuit board, and connected to the conductive plate member A movable arm-shaped member, and a base member disposed on the circuit board in support of the conductive plate-shaped member and the movable arm-shaped member,
The free end of the movable arm-shaped members, the board surface of the circuit board protrudes from the locking portion for locking the end portion of the card substrate which is brought close to the conductive plate member and the free end with a engaging piece which is movable in a direction along is provided, on the portion that becomes the vicinity of the free end of the movable arm-shaped member in the plane of the conductive plate member, partial is the circuit board A groove extending along the substrate surface of the circuit board is subjected to a bending process that is bent toward the direction orthogonal to the substrate surface of the circuit board and further bent toward the direction along the substrate surface of the circuit board. An engagement guide portion is provided to guide the movement of the engagement piece portion in a state where the engagement piece portion is in contact engagement with the engagement piece portion , and the conductive plate-like member and the movable member are provided. configuration and arm-shaped member is integrally formed by a metal plate It is,
A card board latch which is attached to the circuit board and used in a position facing a card board connector to which the other end of the card board is plugged and connected. Rutotomoni the engaging guide portion the movable arm-shaped member is provided with a pair is provided with a pair, each of the pair of movable arms is, are integrated in the coupling portion between the conductive plate member, from the connecting portion 2. The card board latch according to claim 1, wherein the engaging piece portions extending in opposite directions and projecting from the respective free ends are spaced apart from each other. When the locking portion locks one end of the card substrate, the card substrate is connected to the grounding portion of the circuit board through the movable arm-shaped member and the conductive plate-shaped member. claim 1 Symbol placement of the card substrate latch to. Claim 1 Symbol placement of the card substrate latch connection portion between the conductive plate member in the movable arm-shaped member is characterized in that it is embedded within the base member.