JP5340107B2 - Coaxial connector and coaxial connector with antenna - Google Patents

Description

  The present invention relates to a coaxial connector and a coaxial connector with an antenna. More specifically, the coaxial connector includes a plug and a receptacle. When the plug and the receptacle are coupled, for example, the plug is connected at a predetermined angle. The present invention relates to a coaxial connector that can be positioned and fixed, and a coaxial connector with an antenna in which an antenna is coupled to the coaxial connector. In particular, it is suitable for use with an L-shaped antenna attached to a plug.

  A typical coaxial connector is composed of a plug and a receptacle. These plug and receptacle are connected to one connector, for example, a screw type, in which a plug is screwed to the other receptacle, depending on the type of connection. It is roughly classified into a so-called push-pull type that is pressed and fitted to the other.

  The screw-type coaxial connector includes a pair of connectable connectors, that is, a plug and a receptacle, and these connectors are screw-connected using a nut or the like. Since this type of coaxial connector requires a fastening operation using a screw, this operation is troublesome, and therefore a push-pull type coaxial connector that eliminates such an operation has been proposed (for example, (See Patent Documents 1 and 2).

  For example, the following Patent Document 1 discloses a push-pull type coaxial connector including a pair of connectable connectors. The coaxial connector includes one connector and the other connector, and one connector is provided with an outer conductor member outside the inner conductor. The external conductor member is provided with a movable member held from the outside so as to be movable relative to the external conductor member, and a coupling nut provided so as to be movable together with the movable member. In addition, a first spring member and a second spring member are interposed between the movable member and the coupling nut between the outer conductor member and the movable member, respectively, and the first spring portion of the outer conductor member. Is provided with a first protrusion, and the second spring portion of the movable member is provided with a second protrusion for restricting or releasing the displacement of the first protrusion. On the other hand, the other connector has a groove portion with which the first protrusion is engaged.

  To connect both connectors, first, one connector is opposed to the other connector, and the taper surface of the protrusion is in contact with the tip taper surface of the other connector to resist the elastic force of the first spring member. Then push in the coupling nut and the movable member. Then, the first spring portion is elastically deformed in the outer radial direction, and the first protrusion rides on the outer peripheral surface of the outer conductor. Next, when the coupling nut and the movable member are further pushed in, the first protrusion engages with the groove, and both connectors are coupled and locked.

  Patent Document 2 below also discloses a similar push-pull type coaxial connector. Hereinafter, a push-pull type coaxial connector disclosed in Patent Document 2 below will be described with reference to FIG. FIG. 10 is a cross-sectional view of the coaxial connector disclosed in Patent Document 2 below.

  The coaxial connector 31 includes a pair of one connector 32 and the other connector 33 that can be coupled. One connector 32 is provided with a core conductor 34, an outer conductor 36 provided with an insulator 35 interposed on the outer periphery of the core conductor 34, and elastically deformable in the radial direction at the distal end side of the outer conductor 36. And an outer sleeve 38 provided on the outer periphery of the outer conductor 36 so as to be movable in the axial direction. The other connector 33 has a core conductor 48 to which the core conductor 34 on the one connector 32 side can be coupled, and an external conductor 50 provided with an insulator 49 on the outer periphery of the core conductor 48. The outer conductor 50 on the connector 33 side includes an engagement portion 52 that can engage the lock member 37 on the inner peripheral portion and a screw portion 53 that can fit the outer sleeve 38 on the outer peripheral portion. .

  To connect these connectors 32 and 33, first, the axial centers of both connectors are matched, and one connector 32 is pushed into the other connector 33. By this pushing, the tip of the other connector 33 enters the fitting space 39 on the one connector 32 side, and the core conductor 34 on the one connector 32 side enters the fitting space 51 on the other connector 33 side. The front end surface 54 of 41 is brought into contact with the front end surface 55 of the external conductor 50 on the connector 33 side. At this time, the cam corresponding portion 47 of the outer cylinder sleeve 38 is located at the bottom portion 56 of the recess 46. In this state, when the outer cylinder sleeve 38 is moved to the distal end side, the cam corresponding portion 47 is moved to the distal end side of the recess 46. The tip is moved along the inclined surface 44. Thereby, the lock member 37 is pressed in the inner radial direction and elastically deformed, and the contact state between the distal end surface 54 of the lock portion 41 and the distal end surface 55 of the external conductor 50 on the connector 33 side is released. Next, when one connector 32 is further pushed into the other connector 33, the lock portion 41 enters the other fitting space 51 together with the insulator 35, the lock portion 41 engages with the engagement portion 52, and the lock portion. The front end surface 54 of 41 is in contact with the end surface 59 of the external conductor 50 on the connector 33 side, and the core conductor 34 on one connector 32 side is fitted to the core conductor 48 on the other connector 33 side. Here, when the outer cylinder sleeve 38 is moved to the proximal end side, the cam corresponding portion 47 returns to the original position, that is, the bottom portion 56 of the concave portion 46, and the both connectors 32 and 33 are connected. At this time, since the cam corresponding portion 47 is surrounded by the both inclined surfaces 44 and 45 of the recess 46, the both ends of the connectors 32 are naturally returned to the bottom portion 56 at a predetermined position without operating the outer cylinder sleeve 38 by hand. , 33 are maintained.

Japanese Patent Laid-Open No. 10-32042 (summary, FIG. 1) Japanese Patent Laying-Open No. 2004-79425 (paragraphs [0020] to [0024], FIG. 1)

  The coaxial connectors disclosed in Patent Documents 1 and 2 have an advantage that, for example, screw management and torque management for preventing loosening are not required, compared to screw type connectors. However, the coaxial connector of Patent Document 1 requires parts for locking a pair of connectors, for example, a large number of different types of parts such as a movable member, first and second spring members, and so on. There is a risk that the cost increases as the score increases. In addition, since the number of parts is large, it is difficult to increase the dimensional accuracy between the components. If the accuracy is low, it is difficult to maintain a stable high-frequency characteristic without maintaining the coupling state between the connectors constant. On the other hand, the coaxial connector disclosed in Patent Document 2 does not require a spring or the like for urging the connector in the axial direction compared to the coaxial connector disclosed in Patent Document 1, and the number of components is reduced to some extent. On the other hand, the structure of the lock member and the outer cylinder sleeve is complicated, and the coupling and detaching operations are troublesome.

  The coaxial connector is used for various applications, and one of them is used to connect an L-shaped antenna to one connector and position and fix the antenna at a desired angle. The coaxial connector used for this is usually a screw type connector. However, this type of connector requires torque management to prevent screwing and loosening as described above. Even if it is performed properly, the fastening portion may become loose during use, and the antenna may move from a desired angle. On the other hand, the conventional push-pull type coaxial connectors including the coaxial connectors disclosed in Patent Documents 1 and 2 have a structure in which one connector is rotatable with respect to the other connector. Even if the antenna is coupled to the antenna, it is difficult to position and fix the antenna at a desired angle and keep this state.

  Accordingly, the present invention solves such problems of the prior art and is adapted to meet the needs of the application. The object of the present invention is from a pair of connectors that are detachably fitted to each other. In one push-pull type coaxial connector, when one connector is mated and joined to the other connector, it is locked to prevent it from coming off, and when either connector is forcibly rotated in this coupled state, positioning is fixed at an arbitrary angle. An object of the present invention is to provide a coaxial connector that can be attached and detached with a single touch and a coaxial connector with an antenna.

  Another object of the present invention is to provide a coaxial connector and an antenna-equipped coaxial connector that have the above-mentioned object, simplify the component structure, and realize cost reduction.

  Still another object of the present invention is to provide a coaxial connector and an antenna-equipped coaxial connector that have the above-mentioned objects and that can also be connected to a screw-type connector.

  The above object can be achieved by the following configuration. The invention according to claim 1 of the present application is a coaxial connector comprising a pair of first and second connectors that are detachably fitted to each other, wherein the first connector is a first core. A conductor, and a lock member made of an electrically conductive cylindrical body in which the first core conductor is accommodated on the outer periphery via a first insulator, and the second connector includes the first core A connector comprising a second core conductor to which a conductor is coupled, and an electrically conductive cylindrical body into which the second core conductor is housed on the outer periphery via a second insulator and the lock member is inserted A housing, and the locking member includes a fixing portion fixed to the first insulator, and a clearance groove extending from the fixing portion at a predetermined interval to the front to provide a locking portion at the tip portion. It has elastic strips that are elastically deformable in the radial direction with the fixed portion as a base point A plurality of locking finger pieces, and the connector housing enters the gap groove between the locking finger piece and the engaging portion where the locking portion is locked to the inner wall surface of the cylindrical body. A detent protrusion for preventing the rotation of the member, and when the connector of either the first or second connector is forcibly rotated, the locking finger piece is elastically deformed so that the detent protrusion is Beyond that, the connector is positioned and fixed at a predetermined angle.

  According to a second aspect of the present invention, in the coaxial connector according to the first aspect, the engaging portion of the connector housing is formed by an annular protrusion in which the inner peripheral wall surface of the cylindrical body is raised to a predetermined height in the radial direction. The rotation-preventing protrusion is formed behind the annular protrusion, that is, in front of the connector housing in the insertion direction.

  According to a third aspect of the present invention, in the coaxial connector according to the first aspect, the fixing portion of the lock member is a cylindrical body that is fitted into the outer periphery of the first insulator, and the A plurality of locking finger pieces are extended with the gap grooves formed at equal intervals, and the anti-rotation projections are disposed on the cylindrical body wall surface of the connector housing at locations corresponding to the gap grooves. It is characterized by that.

  According to a fourth aspect of the present invention, in the coaxial connector according to the first aspect, the first connector is provided with an outer cylinder sleeve on an outer periphery of the lock member, and the second connector is a cylindrical shape of the connector housing. A female screw is provided around the outside of the body.

  The invention relating to the coaxial connector with an L-shaped antenna according to claim 5 is a coupling portion in which the antenna is detachably coupled to one of the first and second connectors according to claims 1 to 4. Is provided, and an antenna having a predetermined shape is attached to the coupling portion.

  According to the first aspect of the present invention, the connection with the first and second connectors is locked when one connector is pushed into the other connector, and in this connection state, either one of the connectors is forced. When it is rotated, the locking finger piece of the first connector is elastically deformed, and the connector is positioned and fixed at a predetermined angle beyond the anti-rotation protrusion of the second connector. That is, one-touch fitting and coupling can be performed, and in this fitting and coupling state, the connector can be positioned and fixed at a desired angle by forced rotation of one connector. Therefore, since the first and second connectors can be positioned and fixed at a predetermined angle, when a device to be used by positioning and fixing at a desired angle to one connector, such as an antenna, is coupled, this antenna can be fixed at a predetermined angle. Can transmit and receive radio waves. Further, since the configuration of the lock member is simplified, it is easier to manufacture than the coaxial connector of the prior art, and the cost can be reduced.

  According to the second aspect of the present invention, when the first and second connectors are coupled, the locking portion of the lock member is securely engaged with the annular protrusion of the connector housing and is prevented from coming off, and the gap groove is formed on the connector housing. The lock member enters the detent projection and is securely positioned and fixed at a predetermined angle.

  According to the invention of claim 3, the fixing portion of the lock member is a cylindrical body that is fitted around the outer periphery of the first insulator, and a plurality of lock finger pieces are spaced from the cylindrical body at equal intervals. Since it is formed and extended, the lock member can be easily produced by processing a cylindrical body of a predetermined length having a hollow hole inside.

  According to the invention of claim 4, it can be used in combination with a screw type connector. That is, this coaxial connector can be applied to any type of connector of push-pull type and screw type. As a result, the degree of freedom in selecting a connector is improved, and usability is improved.

  According to the invention of claim 5, it is possible to transmit and receive good radio waves by fixing the L-shaped antenna at a predetermined angle.

FIG. 1 shows a plug and a receptacle constituting a coaxial connector according to an embodiment of the present invention, FIG. 1A is a perspective view of a state where the plug and the receptacle are coupled, and FIG. 1B is a perspective view of a separated state of FIG. 2A is a side view of the coaxial connector of FIG. 1A, and FIG. 2B is a cross-sectional view taken along the line IIB-IIB of FIG. 2A. FIG. 3 is a partially enlarged sectional view of FIG. 2B. 4A is a cross-sectional view taken along line IVA-IVA in FIG. 1A, and FIG. 4B is a cross-sectional view in which the plug and the receptacle in FIG. 4A are separated. FIG. 5 shows a plug, FIG. 5A is an external perspective view of the plug, FIG. 5B is a front view of the plug, and FIG. 5C is a cross-sectional view taken along the line VC-VC in FIG. 6 shows the lock member constituting the plug of FIG. 5, FIG. 6A is an external perspective view of the lock member, FIG. 6B is a front view of the lock member of FIG. 6A, and FIG. 6C is a cross-sectional view of the VIC-VIC line of FIG. It is. 7 shows a first housing constituting the receptacle housing, FIG. 7A is an external perspective view, FIG. 7B is a front view, and FIG. 7C is a sectional view taken along the line VIIC-VIIC in FIG. 7B. FIG. 8 is an enlarged rear view of FIG. 7A. 9 shows a second housing constituting the receptacle housing, FIG. 9A is an external perspective view, FIG. 9B is a side view, and FIG. 9C is a cross-sectional view taken along line IXC-IXC in FIG. 9B. FIG. 3 is a cross-sectional view of a conventional coaxial connector.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. However, the embodiment described below exemplifies a coaxial connector for embodying the technical idea of the present invention, and is not intended to specify the present invention. It is equally applicable to the other embodiments included.

  A coaxial connector according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. 1 shows a plug and a receptacle constituting a coaxial connector according to an embodiment of the present invention, FIG. 1A is a perspective view in a state where the plug and the receptacle are coupled, FIG. 1B is a perspective view in a separated state in FIG. 2A is a side view of the coaxial connector of FIG. 1A, and FIG. 2B is a cross-sectional view taken along the line IIB-IIB of FIG. 2A.

  A coaxial connector 1 according to an embodiment of the present invention includes a plug 2 and a receptacle 11 into which the plug is inserted. The push-pull type SMA connector (SMA: Sub Miniature) has a use frequency in the range of DC to 12.4 GHz. Type A). However, the coaxial connector 1 can also be fitted with a screw type (screw tightening type) SMA connector. The plug 2 and the receptacle 11 are expressed as a first connector and a second connector in the claims.

  The receptacle 11 is mounted on a circuit board (not shown) and accommodated in a device casing such as a personal computer or various terminal devices. The plug 2 is provided with a core conductor at the inner center, and the core conductor has a contact portion at one end and a terminal portion at the other end. The contact portion is coupled to the core conductor of the receptacle, and the terminal portion is coupled to, for example, a coaxial cable or an L-shaped antenna (not shown). The coaxial cable or the L-shaped antenna can also be provided on the receptacle side. The plug 2 is electrically connected by being inserted into the receptacle 11 by a predetermined pushing force and is locked so that the plug 2 is kept from being detached. On the other hand, the plug 2 can be easily pulled out by a predetermined pulling force. It has a combined structure. Further, when the plug 2 is forcibly rotated while being connected to the receptacle 11, the plug 2 can be rotated with respect to the receptacle 11 and can be positioned and fixed at an arbitrary angle.

  The coaxial connector 1 having this configuration can be fitted and coupled to the receptacle 11 with a single touch of the plug 2, and can be positioned and fixed at an arbitrary angle, so that the coupling operation is simple and the L-shaped antenna is connected to the plug terminal. When the is attached, the L-shaped antenna is positioned at an arbitrary angle, and signals can be transmitted and received at an optimum angle. Of course, since the plug can be detachably fitted to the receptacle with a single touch, the coupling operation is extremely simple compared to the conventional screw coupling connector, and it does not loosen during use. ing. Hereinafter, the structure of the plug and receptacle constituting the coaxial connector will be described in detail.

  The plug will be described with reference to FIGS. 4A is a cross-sectional view taken along line IVA-IVA in FIG. 1A, FIG. 4B is a cross-sectional view in which the plug and the receptacle in FIG. 4A are separated, FIG. 5 shows the plug, FIG. 5A is an external perspective view of the plug, and FIG. Is a front view of the plug, FIG. 5C is a cross-sectional view taken along the line VC-VC in FIG. 5B, FIG. 6 is a lock member, FIG. 6A is an external perspective view of the lock member, FIG. 6B is a front view of the lock member in FIG. 6C is a cross-sectional view taken along the line VIC-VIC in FIG. 6B. In FIG. 4, the core conductor in the plug is omitted.

  As shown in FIGS. 4 and 5, the plug 2 includes a core conductor 3, an insulator 4 provided with a through-hole to which the core conductor is mounted, and a receptacle fixed to the outer periphery in the longitudinal direction of the insulator. 11 has a lock member 5 that is locked to 11 and an outer sleeve 10 that accommodates an assembly of these components and covers the outside. The core conductor 3 and the insulator 4 are expressed as a first core conductor and a first insulator in the claims.

  As shown in FIG. 5C, the core conductor 3 has a contact portion 3a inserted into the core conductor of the receptacle 11 at one end and a terminal portion 3b connected to the core conductor of the coaxial cable or L-shaped antenna at the other end. It has a rod-like body with a predetermined length and thickness, and is made of a highly conductive metal material.

Insulator 4, 4, as shown in FIG. 5C, has a predetermined diameter and length, the core conductor 3 consists columnar body having a through hole 4 ₀ which is inserted and fixed to the center portion in the longitudinal direction It is made of an electrically insulating synthetic resin molding. The insulator 4 includes a large-diameter columnar portion 4a to which the large-diameter cylindrical portion of the lock member 5 is mounted, and a small-diameter cylindrical portion of the lock member 5 that extends a predetermined length from one end of the large-diameter columnar portion 4a. 7 having a medium-diameter columnar portion 4b that is inserted with a predetermined gap therebetween and a small-diameter columnar portion 4c that is extended from the other end by a predetermined length and is press-fitted into the recessed hole of the outer sleeve 10. Yes. Holes 4 ₀ inside consists circular hole, its diameter has a diameter which is the core conductor 3 is pressed.

As shown in FIG. 6, the lock member 5 has a predetermined diameter and length, is formed of a hollow cylindrical body, is formed of a highly conductive metal material, and serves as an external conductor. That is, the lock 5 is formed between the large-diameter cylindrical portion 6 into which the large-diameter columnar portion 4a of the insulator 4 is inserted and the intermediate-diameter columnar portion 4b extending from the large-diameter cylindrical portion. The hollow hole 9 has a small-diameter cylindrical part 7 having a diameter with a slight gap and a length slightly protruding from the tip part of the medium-diameter columnar part 4b. It is formed with the provided cylindrical body. The hollow hole 9 is composed of a large-diameter hole 9b fitted into the large-diameter columnar portion 4a of the insulator and a small-diameter hole 9a into which the medium-diameter columnar portion 4b is inserted. The large-diameter cylindrical portion 6 has an inner wall surface 6a having the same length and diameter as the large-diameter columnar portion 4a of the insulator, and is thickened radially outward from the inner wall surface 6a on the inner wall surface of the outer cylinder sleeve 10. The outer wall surface 6b is in pressure contact, and the opening of the hollow hole 9 is formed in the rear wall surface 6c. The small-diameter cylindrical portion 7 protrudes from the front wall surface 6d, and the connecting portion is a stepped wall surface. The large-diameter cylindrical portion 6, a portion of the outer peripheral wall surface is cut is formed flat resected surface 6b _1. When the cut portion is provided, the outer peripheral shape of the large-diameter cylindrical portion 6 becomes a non-circular shape, and is prevented from rotating with the outer cylindrical sleeve 10 when mounted in the outer cylindrical sleeve 10. The large-diameter cylindrical portion 6 is a fixed portion that is fixed to the large-diameter columnar portion 4 a of the insulator 4. In addition, this large diameter cylindrical part is expressed as a fixing | fixed part by description of a claim.

The small-diameter cylindrical portion 7 is thinner than the large-diameter cylindrical portion 6 and extends forward from the step wall surface by a predetermined length. The small-diameter cylindrical portion 7 is provided with an annular projection 7a raised at a predetermined height in the outer circumferential direction at the tip, and a plurality of (e.g., eight) from the tip toward the stepped portion. the slit 7 ₁₎ formed at predetermined intervals, the smaller cylindrical portion 7 is divided into small strips 7b multiple pieces. Slit 7 ₁ a plurality of are formed at substantially equal intervals in the same width dimension. This is the slit _{7 1} fit detent projections 18 ₁ of the receptacle 11 to be described later. Further, formed by forming a slit 7 ₁ a plurality of, annular projection 7a be formed a plurality of arcuate projections 7a 'at the tip is divided at substantially equal intervals, these protrusions the engaging portion And this latching | locking part is latched by cyclic | annular protrusion 18d 'of the receptacle 11 mentioned later (refer FIG. 7C). The divided strip 7b has a locking portion at the tip and becomes an elastic piece having a predetermined length. The elastic piece can be elastically deformed in the radial direction with the large-diameter cylindrical portion 6 as a base point. . The locking finger piece 8 is constituted by the engaging portion formed of the arcuate protrusion 7a ′ and the strip 7b. The lock finger piece 8 extends from the large-diameter cylindrical portion 6. However, if the number of the lock finger pieces 8 is increased, the number of slits also increases, and the plug can be positioned and fixed at a small angle when coupled with the receptacle.

  The lock member 5 is covered with an outer cylinder sleeve 10. As shown in FIGS. 4 and 5, the outer cylinder sleeve covers the small diameter cylindrical portion 7 of the lock member 5 with a predetermined gap and is inserted into the cylindrical portion 17 </ b> B of the receptacle 11. 10a, a fitting cylindrical portion 10b fitted into the large-diameter cylindrical portion 6 of the lock member 5, and a small-diameter cylindrical insulator provided on a closed wall 10c that closes an end opening of the fitting cylindrical portion. It has a recessed hole 10d into which the portion 7 is inserted, and is formed of an electrically insulating synthetic resin molding.

Assembly of the plug 2 is inserted through the core conductor 3 into the through-hole 4 ₀ of the insulator 4 is fixed in place. Next, the lock member 5 is attached to the insulator 4 and the lock member is covered with the outer cylinder sleeve 10 to complete the assembly. The outer cylinder sleeve 10 protects the internal lock member 5 and the like.

  Next, the receptacle will be described with reference to FIGS. 1, 4, and 7 to 9. 7 shows a first housing constituting the receptacle housing, FIG. 7A is an external perspective view, FIG. 7B is a front view, FIG. 7C is a sectional view taken along the line VIIC-VIIC in FIG. 7B, and FIG. 9 is an enlarged rear view, FIG. 9 shows a second housing constituting the receptacle housing, FIG. 9A is an external perspective view, FIG. 9B is a side view, and FIG. 9C is a sectional view taken along line IXC-IXC in FIG.

  As shown in FIG. 4, the receptacle 11 includes two core conductors 12 and 13, two insulators 14 and 15 that fix the core conductors, and a receptacle housing (hereinafter referred to as “receptacle housing”) that accommodates these insulators. 16 (refer to FIG. 1).

  As shown in FIGS. 1 and 4, the housing 16 has a first housing 17 having an insertion port into which the plug 2 is inserted at one end, and is coupled to the first housing 17 and fixed to a substrate or the like. The second housing 19 is made of an electrically conductive metal material. The first and second housings 17 and 19 are external conductors. As shown in FIG. 7, the first housing 17 includes a rectangular block 17A having a predetermined size and a cylindrical portion 17B projecting forward from one wall surface of the rectangular block 17A. A through hole 18 is formed inside. A male screw 17b is formed on the outer periphery of the cylindrical portion 17B. A screw type (screw tightening type) connector (not shown) is coupled to the cylindrical portion 17B using the screw 17b. In the connection with the plug 2, the cylindrical portion 17B is covered with the outer cylinder sleeve 10 (see FIG. 4A). With this configuration, the coaxial connector 1 of this embodiment can be used for both push-pull type and screw type connectors.

  As shown in FIG. 7C, the through-hole 18 includes a through-hole 18A of a rectangular parallelepiped block and a through-hole 18B of a cylindrical portion. These through-holes 18A and 18B are formed of the rectangular parallelepiped block 17A and the cylindrical portion. It is formed through 17B. The insulator 14 is inserted into the through holes 18A and 18B (see FIG. 4).

  4 and 7, the through hole 18A of the rectangular block communicates with the through hole 18B. The cover mounting opening 18a is formed on the side wall surface facing the through hole 18B, and one side in the longitudinal direction. It is comprised by the mounting hole 18b by which the 2nd housing 19 is mounted | worn with a wall surface. The cover mounting opening 18a is closed by the cover 20 (see FIG. 4), and this opening is also used as a solder connection work port for the pair of core conductors 12 and 13.

  As shown in FIG. 7C, the through hole 18 </ b> B in the cylindrical portion has an insertion port into which the plug 2 is inserted with a diameter slightly larger than the diameter of the small diameter cylindrical portion 7 of the lock member 5 and a predetermined length at the tip portion. The forward hole 18c, the tip of the locking member 5 of the plug 2 is in contact with the back part of the front hole, and an inclined part 18d that shrinks in the radial direction, and an intermediate hole 18e that has an inner diameter slightly reduced beyond the inclined part. The intermediate hole 18e communicates with the through hole 18A. The inclined portion 18d serves as an insertion guide portion for the plug 2. Since the through hole 18A is composed of the front hole 18c, the inclined portion 18d, and the intermediate hole 18e, an annular shape that protrudes from the inner wall surface to the center portion at the boundary between the inclined portion 18d and the intermediate hole 18e. A protrusion 18d ′ is formed, and the annular protrusion 18d ′ serves as an engaging portion with which the locking portion of the plug 2 is engaged.

Further, the through hole 18B includes, from the annular projection 18 d 'to the inner portion of the intermediate hole 18e, a plurality of streak projections 18 ₁ of a predetermined length are formed. That is, these striatal projections 18 _1, as shown in FIG. 8, are formed at equal intervals along the inner wall surface of the intermediate pore 18e. These intervals correspond to the slit 7 ₁ of the locking member 5 of the plug 2. These filament protrusions 18 _1, when the plugs 2 is inserted into the receptacle 11, stops around the plug 2 fits in the slit 7 ₁ of the plug 2 that each filament protrusions 18 ₁ correspond respectively, so detent It is a protrusion. Hereinafter, this linear protrusion is referred to as a detent protrusion.

Referring to FIGS. 3 and 8, illustrating the detent projections 18 _1. FIG. 3 is a partially enlarged cross-sectional view of FIG. 2B. These anti-rotation projections 18 ₁ have the same shape, and as shown in FIGS. 3 and 8, the anti-rotation projections 18 ₁ have a predetermined width a and an intermediate hole in the circumferential direction of the inner wall surface. And has a predetermined length b and height c, both ends in the circumferential direction are inclined, and the cross-sectional shape is substantially trapezoidal. Width length a and length b is adapted to the length to be fitted in the slit 7 ₁ of the lock member 5. Moreover, the inclination of both ends of a substantially trapezoid shape serves as a guide surface.

The detent projections 18 ₁ are low the height c. When the height of the protrusion is lowered, a force is applied to the inserted plug 2 to forcibly rotate it, so that the locking finger piece 8 is guided along the inclined surface and rotated beyond this height c, that is, the top. it can. That is, when the plug 2 is inserted into the receptacle 11, the distal end of the lock member 5 exceeds the annular protrusion 18d 'of the engaging portion, and the engaging portion 7a' (arc-shaped protrusion) of the plug 2 is engaged with the engaging portion. At the same time, the rotation preventing projection 18 ₁ is fitted into the slit 17 ₁ . Thereby, the plug 2 is prevented from rotating. Also, it is detent, due to the low height of the detent projections 18 _1, forcing either direction by adding a little force to the plug 2, i.e. is rotated in either direction of clockwise or counter-clockwise , the locking fingers 8 of the lock member 5 is positioned and fixed to incorporated fit the stop projection 18 ₁ around the slit 17 ₁ of the locking fingers 8 adjacent to get over the inclined surface. By forced rotation of the plug 2, lower the height of the detent projections 18 _1, the ride-over of the projections is in the range of elastic deformation of the locking fingers 8, the locking fingers 8 is not damaged .

A second housing 19 is attached to the rectangular block 17A. As shown in FIG. 9, the second housing 19 has a mounting cylindrical portion 19A that is fitted into the mounting hole 18b of the rectangular block 17A, and is integrally connected to the mounting cylindrical portion 19A to be attached to a substrate or the like. A hollow hole 19a for accommodating the insulator 15 is formed inside the mounting fixing portion 19B to be attached. Mounting tubular portion 19A is adapted the outer peripheral wall surface is a partial cut-shape, and has a the notch 19 ₁ detent. Further, the attachment fixing portion 19B is extended downward by a predetermined length in the state of FIG. 9 to form a plurality of leg pieces 19b. These leg pieces are terminal portions that are electrically connected to a ground electrode or the like of a circuit board (not shown).

As shown in FIG. 4, the two core conductors 12 and 13 are formed of highly conductive rod-shaped bodies having substantially the same shape. One core conductor 12 is a contact portion inserted into the core conductor 3 of the plug 2 at the tip and a terminal portion solder-connected to the other core conductor 13 at the other end. Also, one core conductor 13 is
One end is a terminal portion connected to the terminal portion of the core conductor 12, and the other end is a terminal portion electrically connected to an electrode of a circuit board (not shown). The two insulators 14 and 15 electrically insulate the pair of core conductors 12 and 13 and are provided with through-holes through which the core conductors are inserted so that they are electrically insulating. It is formed of a resin molding.

  When assembling the receptacle 11, the first housing 17 is inserted and inserted into an insulator 14 to which one core conductor 12 is fixed. The insulator 15 to which the other core conductor 13 is fixed is inserted into the second housing 19 and positioned and fixed. Next, the second housing 19 is mounted on the first housing 17 and the ends of the pair of core conductors 12 and 13 are soldered using the cover mounting opening 18a. The opening is closed with the cover 20 to complete the assembly.

  The coaxial connector 1 includes an assembled plug 2 and a receptacle 11. According to this coaxial connector, the plug 2 can be fitted and connected to the receptacle 11 with a single touch, and the plug 2 can be positioned and fixed at an arbitrary angle, so that the connecting operation is simple and an L-shaped antenna is attached to the plug terminal portion. When attached, the L-shaped antenna is positioned at an arbitrary angle, and signals can be transmitted and received at an optimum angle. Of course, since the plug can be detachably fitted to the receptacle with a single touch, the coupling operation is extremely simple and does not become loose during use as compared with a conventional screw coupling connector.

1 Coaxial connector 2 Plug 3 Core conductor (first core conductor)
4 Insulator (first insulator)
4a Large-diameter columnar portion 4b Medium-diameter columnar portion 5 Lock member 6 Large-diameter cylindrical portion 7 Small-diameter cylindrical portion 7a ′ Arc-shaped protrusion 7 ₁ Slit 8 Lock finger piece 10 Outer sleeve 11 Receptacle 12, 13 Core conductors 14, 15 Insulator (second insulator)
16 Receptacle housing 17 First housing 18 ₁ Non-rotating projection 19 Second housing

Claims (5)

A coaxial connector comprising a pair of first and second connectors that are detachably fitted to each other,
The first connector includes a first core conductor, and a lock member made of an electrically conductive cylindrical body in which the first core conductor is housed on the outer periphery via a first insulator,
The second connector includes a second core conductor to which the first core conductor is coupled, and the second core conductor is accommodated on the outer periphery via a second insulator, and the locking member is different. A connector housing made of an electrically conductive cylindrical body to be inserted;
The lock member includes a fixed portion fixed to the first insulator, a clearance groove extending from the fixed portion at a predetermined interval, and extending forward, and a locking portion at a tip portion. And a plurality of locking finger pieces made of elastic strips that can be elastically deformed in the radial direction from the base point, and the connector housing has the locking portion locked to the inner wall surface of the cylindrical body. An engagement portion and a detent protrusion that enters the clearance groove of the lock finger piece and prevents the lock member from rotating are provided, and either the first connector or the second connector is forcibly rotated. The coaxial connector is characterized in that when the locking finger piece is elastically deformed, the connector is positioned and fixed at a predetermined angle beyond the anti-rotation protrusion.   The engaging portion of the connector housing is formed by an annular protrusion whose inner peripheral wall surface of the cylindrical body is raised to a predetermined height in the radial direction, and is located behind the annular protrusion, that is, in the insertion direction of the connector housing. The coaxial connector according to claim 1, wherein the anti-rotation protrusion is formed.   The fixing portion of the lock member is a cylindrical body that is fitted around the outer periphery of the first insulator, and the plurality of lock finger pieces are formed at equal intervals from the cylindrical body. 2. The coaxial connector according to claim 1, wherein the coaxial connector is extended, and the rotation-preventing protrusion is disposed at a position corresponding to the gap groove on a cylindrical body wall surface of the connector housing.   The said 1st connector is provided with the outer cylinder sleeve in the outer periphery of the said locking member, and the said 2nd connector is provided with the female screw in the outer periphery of the cylindrical body of the said connector housing. 1. The coaxial connector described in 1.   The connector of any one of the first and second connectors according to claim 1 to 4 is provided with a coupling portion to which an antenna is detachably coupled, and an antenna having a predetermined shape is attached to the coupling portion. A coaxial connector with an L-shaped antenna.

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