JP4732996B2 - Card edge connector - Google Patents

Description

  The present invention relates to a card edge connector.

Conventionally, a card edge connector that is fitted and connected to an end portion of a wiring board usually has the following configuration. That is, the female terminal fitting having the contact piece is accommodated in the connector housing, and the contact piece is elastic with respect to the terminal connection portion provided on the plate surface of the wiring board inserted from the front with respect to the connector housing. A predetermined contact pressure can be obtained by contacting while deforming. In addition, what was described in the following patent document 1 is known as an example of this kind of card edge connector.
JP 2002-367695 A

  By the way, when the card edge connector having the above-described configuration is used for an automobile wire harness, the following problems occur. That is, after the terminal fitting is connected to the electric wire at the wire harness manufacturing site, it is transported to the assembly site together with the wire group, and is accommodated in the connector housing at the destination assembly site. ing. For this reason, in the manufacturing process of a wire harness and the conveyance process to the assembly field, the terminal fitting is made into the state exposed to the outside entirely.

  And in this terminal metal fitting, the structure which opens the surface by the side of a wiring board and exposes a contact piece to the exterior must be employ | adopted for the convenience of making a contact piece contact a wiring board. For this reason, in the manufacturing process of the wire harness and the process of transporting to the assembly site, the electric wire and other members are easily caught on the contact piece, and the contact piece may be unintentionally deformed and damaged. It was. Especially for small terminal fittings, if the contact piece deforms even a little, it becomes difficult to obtain the designed contact pressure. Therefore, it is necessary to replace the deformed terminal fitting, and in some cases, the entire wire harness must be replaced. As a result, there is a risk of increasing the cost.

  The present invention has been completed based on the above-described circumstances, and an object thereof is to reduce the cost.

  The present invention is configured to extend along the insertion / extraction direction of the wiring board, and is provided with a contact portion that protrudes in the middle and comes into contact with a terminal connection portion provided on the plate surface of the wiring board. A terminal fitting having a piece; a connector housing in which the terminal fitting is accommodated; and an elastic piece provided on the connector housing and capable of elastically pressing the contact piece from the side opposite to the wiring board side. ing.

  In this way, the contact piece is elastically pressed by the elastic piece from the side opposite to the wiring board side, so that a sufficient contact pressure of the contact portion with respect to the terminal connecting portion can be obtained, and thus the wiring board and the terminal The metal fitting can be connected well. As described above, the elastic force for obtaining the desired contact pressure is mainly or entirely shared by the elastic piece, so even if there is some unintended deformation of the contact piece, the contact pressure The impact on is minimal. Therefore, even if some deformation occurs, the terminal fitting can be used as it is, and the replacement frequency of the terminal fitting can be reduced.

The following configuration is preferable as an embodiment of the present invention.
(1) The connector housing is configured to be equipped with a pressing member capable of pressing the elastic piece from the side opposite to the wiring board side and keeping the elastic piece in an elastically deformed state. Thereby, since the elastic piece is pressed by the pressing member and kept in an elastically deformed state, a sufficient contact pressure can be obtained.

(2) The pressing member is movable with respect to the connector housing in a movable state between a temporary mounting position where the elastic piece is not pressed and a main mounting position where the elastic piece is pressed and held in an elastically deformed state. The configuration is held. In this way, when the terminal fitting is accommodated in the connector housing or when the wiring board is brought into contact with the contact piece, if the holding member is held at the temporary mounting position with respect to the connector housing, the force required for assembly can be obtained. Therefore, workability is improved. On the other hand, a sufficient contact pressure can be obtained by moving the pressing member to the full mounting position.

(3) The connector housing is provided with a retainer capable of retaining the terminal fitting by being locked with respect to the accommodated terminal fitting. Then, a retainer insertion hole that allows the retainer to be mounted is formed, and a retainer retaining portion that can retain the retainer by being engaged with the retainer is provided at the main mounting position. . Accordingly, the retainer can be mounted on the connector housing through the retainer insertion hole in a state where the pressing member is mounted at the temporary mounting position. Furthermore, the retainer can be retained by the retainer retaining portion by moving the pressing member to the full mounting position.

(4) The elastic piece is configured to be mounted on the connector housing in a movable state on the side opposite to the wiring board side. As a result, when the terminal connection part of the wiring board is brought into contact with the contact piece in the stage before the elastic piece is pressed by the holding member, the elastic piece is moved to the side opposite to the wiring board side and is released. Power can be reduced.

(5) The connector housing is provided with a cavity into which the terminal fitting can be inserted, and an elastic piece accommodating space capable of accommodating the elastic piece is formed by cutting out a part of the peripheral wall of the cavity. In the present invention, a portion of the peripheral wall of the cavity adjacent to the elastic piece housing space is formed with a hooking wall that can be hooked to the end of the elastic piece. Thereby, it is possible to prevent the elastic piece attached to the connector housing in the idle state by the hooking wall from falling off.

(6) The pressing member is movable with respect to the connector housing in a movable state between a temporary mounting position where the elastic piece is not pressed and a permanent mounting position where the elastic piece is pressed and held in an elastically deformed state. The holding member is configured to be formed with a hook portion that can be hooked to an end portion of the elastic piece at the temporary mounting position. Thereby, the elastic piece attached to the connector housing in the idle state by the hooking portion can be prevented from falling off.

(7) In the case where the wiring board has a substantially cylindrical shape and is held in a mating connector housing that can be fitted to the connector housing, the pressing member is provided in the mating connector housing. By engaging with the locked portion, a lock portion that can hold both connector housings in a fitted state is provided. Thus, when the mating connector housing is fitted to the connector housing, the contact piece of the terminal fitting is brought into contact with the terminal connection portion of the wiring board. At this time, the lock portion of the pressing member is locked to the locked portion of the mating connector housing, whereby the two connector housings are held in the fitted state.

(8) The pressing member is movable with respect to the connector housing in a movable state between a temporary mounting position where the elastic piece is not pressed and a permanent mounting position where the elastic piece is pressed and held in an elastically deformed state. When the pressing member reaches the main mounting position with both the connector housings being held, the lock portion is locked to the locked portion. As a result, after the connector housings are fitted together, when the pressing member is moved to the main mounting position, the elastic piece is pressed by the pressing member to exert sufficient contact pressure, and the lock portion is engaged with the locked portion. By stopping, both connector housings are held in the fitted state. If both the connector housings are locked, it is ensured that the elastic piece is pressed by the pressing member and sufficient contact pressure is obtained, so that the connection reliability is high.

(9) A plurality of the elastic pieces are integrally held by a holding body attached to the connector housing. Thereby, a plurality of elastic pieces can be handled integrally by the holding body.

(10) The elastic piece is made of a metal material, and the holding body is made of an insulating material. Thus, since the elastic piece is made of a metal material, it can exert a good elastic force over a long period of time, and since the holding body is made of an insulating material, when the elastic piece comes into contact with the contact piece, between the terminal fittings Short circuit is prevented.

(11) The contact piece is formed in a cantilever shape and a free end thereof is pressed by the elastic piece. Thus, since the free end part of a contact piece is elastically pressed by an elastic piece, a favorable contact pressure can be obtained.

(12) A plurality of the elastic pieces are integrally held by a holding body attached to the connector housing, and the elastic piece has a cantilever shape whose base end is fixed to the holding body. In addition to being formed, it is configured such that it once protrudes from the holding body toward the proximal end side of the contact piece, and is then folded back toward the free end side of the contact piece. In this way, by making the elastic piece into a cantilevered folded shape, it is possible to increase the distance of the extended surface, and thus it is possible to obtain a good contact pressure.

(13) The pressing member is formed in a substantially cylindrical shape surrounding the peripheral surface of the connector housing. Thereby, when the elastic piece is elastically deformed, a force in a direction away from the connector housing acts on the pressing member, but the pressing member is formed in a substantially cylindrical shape surrounding the peripheral surface of the connector housing. Therefore, the displacement of the pressing member due to the force is suppressed, and thus the elastic force applied to the contact piece is prevented from being reduced, and high connection reliability is obtained.

(14) A plurality of the terminal fittings are provided side by side in the width direction, and the number of the elastic pieces corresponding to each terminal fitting is provided. Thereby, since each elastic piece presses individually the contact piece of each terminal metal fitting correspondingly, compared with the case where one elastic piece presses a plurality of contact pieces, it is equally with respect to each contact piece. Elastic force can be applied.

(15) The terminal connection portions are provided on both the front and back surfaces of the wiring board, a pair of the terminal fittings are arranged at positions sandwiching the wiring board, and the elastic pieces are connected to the wiring board side of the contact pieces. Are arranged in a pair on the opposite side. Thereby, since each contact piece is pressed toward a wiring board by each elastic piece from the front and back both sides of a wiring board, connection reliability can be improved further. Moreover, it can respond easily also to a multipolar thing.

  According to the present invention, cost reduction can be achieved.

<Embodiment>
An embodiment of the present invention will be described with reference to FIGS. In this embodiment, the card edge connector 20 used for the wire harness of a motor vehicle is illustrated. The mating connector 10 that integrally holds the wiring board 12 can be fitted into the card edge connector 20. In the following, the fitting surface side of both connectors 10 and 20 is the front, the opposite side is the rear, and the vertical direction is based on FIG.

  First, the mating connector 10 will be briefly described. As shown in FIGS. 10 and 11, the mating connector 10 includes a mating connector housing 11 (hereinafter simply referred to as a mating housing 11) having a substantially cylindrical shape as a whole and a wiring board 12 held in the mating housing 11. Composed. The mating housing 11 is made of metal and is formed in a rectangular tube shape into which the card edge connector 20 can be fitted, and a lock portion 52 on the card edge connector 20 side can be locked at the front end portion of the upper portion. A locked portion 13 is formed. The locked portion 13 is formed in a substantially rectangular hole shape that penetrates the upper wall portion of the mating housing 11 in the vertical direction. The wiring board 12 is made of a synthetic resin and is formed in a flat plate shape. Conductive paths and terminal connection portions (not shown) are formed on both front and back surfaces. The wiring board 12 is arranged at a position where the front end face is recessed behind the locked part 13.

  Next, the card edge connector 20 will be described. As shown in FIG. 1, the card edge connector 20 is roughly composed of a plurality of terminal fittings 21 connected to the terminals of the wires W of the wire harness, and a connector housing 22 (hereinafter simply referred to as the terminal fitting 21). Housing 22), and a pair of upper and lower elastic piece units 23, a cover 24, and a pair of upper and lower retainers 25 mounted on the housing 22, respectively. In addition, in FIG. 1, illustration is abbreviate | omitted about each terminal metal fitting 21, the elastic piece unit 23, and the retainer 25 of the lower stage side.

  As shown in FIGS. 4 to 6, the terminal fitting 21 is formed into a predetermined shape by press-molding a metal plate having excellent conductivity. The terminal fitting 21 has a configuration in which a board connecting portion 26 that can be connected to the wiring board 12 and a wire connecting portion 27 that can be connected to the electric wire W are connected in the front-rear direction. The electric wire connecting portion 27 connects the wire barrel portion 27a that is caulked to the core wire portion exposed at the end portion of the electric wire W and the insulation barrel portion 27b that is caulked to the covering portion of the electric wire W. It is supposed to be configured.

  The board connecting portion 26 protrudes from the protruding end of one side wall 26b to the other side wall 26c side of the bottom wall 26a, the pair of side walls 26b and 26c rising from both ends of the bottom wall 26a, and the bottom wall 26c. The ceiling wall 26d that opposes the wall 26a and the outer wall 26e that protrudes from the protruding end of the other side wall 26c toward the one side wall 26b and overlaps the outside of the ceiling wall 26d are formed into a substantially box-like shape that opens as a whole. Is formed.

  The ceiling wall 26d has a short plate shape connected to the rear end portion of one side wall 26b, and a contact piece 28 extending from the front end along the front-rear direction (insertion / removal direction of the wiring board 12) is formed. Has been. The contact piece 28 has a cantilever shape. Specifically, the contact piece 28 is bent substantially perpendicularly from the ceiling wall 26d toward the bottom wall 26a, and comes into contact with the inner surface of the bottom wall 26a again to be inclined toward the outer wall 26e again. After extending forward, it is bent in a substantially U-shape toward the bottom wall 26a again before the free end 28a, and then the free end 28a protrudes forward substantially horizontally (in parallel with the bottom wall 26a). It is assumed to be a form to do. The contact piece 28 can be elastically deformed with a contact portion on the rear side with the bottom wall 26a as a fulcrum, and accordingly, in the vertical direction (direction in which the contact piece 28 is in contact with or separated from the inner wiring board 12 or the outer elastic piece 50). It is designed to be displaced.

  Although the contact piece 28 is formed to be narrower than the bottom wall 26a, the ceiling wall 26d, and the outer wall 26e, the free end portion 28a is partially widened. Of the contact piece 28, a portion protruding toward the bottom wall 26 a before (on the way) the free end portion 28 a is a contact portion 29 that can contact the wiring board 12. A first opening portion 30 that exposes the contact portion 29 inwardly to the outside is formed in the first half portion of the bottom wall 26a excluding the front end portion. The first opening 30 is formed by cutting out the base ends of the side walls 26b and 26c by a predetermined height (in the state of being accommodated in the housing 22 along the edge of a board insertion space 38 described later). ing. The contact portion 29 protrudes to the substantially same position as the bottom surface (outer surface) of the rear portion of the bottom wall 26a with respect to the first opening portion 30 by the first opening portion 30. In addition, the front end portion (reversal restricting portion) on the front side of the first opening 30 in the bottom wall 26a is positioned on the outer side of the rear portion by the extent that the contact piece 28 extends obliquely and the tip thereof protrudes outside. ing. On the other hand, a second opening portion 31 is formed in the front half portion of the outer wall 26e to expose the front side portion including the contact portion 29 and the free end portion 28a of the contact piece 28 to the outside. The second opening 31 is formed by cutting out a predetermined height of the front half portion excluding the front end portion of the protruding end portions of the side walls 26b and 26c.

  A front end portion of the bottom wall 26a on the front side of the first opening 30 is engaged with an inner surface (a surface facing the wiring board 12 side) of the free end portion 28a of the contact piece 28 facing the bottom wall 26a side. Thus, the anti-reversal portion 32 that can regulate the deformation of the contact piece 28 in the reverse direction, that is, the inward displacement, is provided. The contact piece 28 comes into contact with the inversion preventing portion 32 in a natural state. From the projecting ends of the front end portions of the side walls 26b and 26c, the contact piece 28 is engaged with the outer surface (the surface facing the elastic piece 50 side) facing the outer wall 26e side of the free end portion 28a of the contact piece 28. An excessive bending restricting portion 33 capable of restricting excessive bending is formed inwardly bent. The contact piece 28 is separated from the excessive deflection restricting portion 33 in a natural state. Further, a fitting convex portion 34 protruding forward is provided from the front end surfaces of the side walls 26b and 26c. In addition, a locking hole 35 is formed through the bottom wall 26a in a rear portion of the notch. Further, a stabilizer 36 capable of guiding the insertion operation of the terminal fitting 21 is formed to protrude from the protruding end of the ceiling wall 26d through a hole formed in the outer wall 26e.

  Next, the housing 22 will be described. The housing 22 is made of synthetic resin and is formed in a substantially block shape that is horizontally long as shown in FIGS. 2 to 6. A cavity 37 that opens rearward is provided in the housing 22, and the terminal fitting 21 can be inserted from the rear. The cavities 37 are provided in two stages vertically (on the front side and the back side of the wiring substrate 12) and in a plurality of chambers in the width direction in parallel at substantially equal intervals. The terminal fittings 21 accommodated in the upper and lower cavities 37 are in a posture in which the contact portions 29 and the bottom wall 26a are opposed to each other and the outer walls 26e are directed to the opposite side, that is, in a back-to-back posture. 5).

  A substrate insertion space 38 (substrate insertion opening) is formed on the front surface of the housing 22 so as to communicate with the upper and lower cavities 37 and open forward. The wiring substrate 12 can be inserted into the substrate 22 from the front. The board insertion space 38 is formed by notching the partition walls 37a partitioning the cavities 37 arranged in the vertical direction and the side walls 37b partitioning the cavities 37 arranged in the width direction, and crossing over the range excluding both side ends of the housing 22. Is done. The depth of the board insertion space 38 is set to be shorter than the length of the contact piece 28 (for example, about half). In a state where the terminal fitting 21 is accommodated in the cavity 37, the first opening 30 of the terminal fitting 21 coincides with the board insertion space 38, and the contact portion 29 enters the board insertion space 38.

  On the other hand, upper and lower cavities 37 are opened to the outside along the vertical direction on the upper surface and the lower surface, which are outer surfaces along the plate surface of the wiring board 12, of the housing 22, and an elastic piece 50 described later can be accommodated. Elastic piece accommodating spaces 39 are respectively formed. The elastic piece housing space 39 is formed by cutting out the front half portion of the outer wall 37c on the opposite side of the partition wall 37a from the peripheral wall of each cavity 37 except for the front end so as to penetrate vertically. A front end portion of the outer wall 37 c of the cavity 37, that is, a portion adjacent to the front side of the elastic piece accommodating space 39 is a hook wall 40 on which the free end portion 50 b of the elastic piece 50 can be hooked.

  The elastic piece accommodating space 39 is individually partitioned by the partition wall 41 for each cavity 37 (each elastic piece 50) arranged in the width direction (FIG. 2). The partition wall 41 extends along the front-rear direction, and is connected to the side wall 37 b of the cavity 37 while being substantially flush. A mounting recess 42 to which a holding body 51 that holds an elastic piece 50 to be described later can be mounted crosses the rear end portion of each partition wall 41 and the inner surface facing the partition wall 41 of both side ends of the housing 22. It is formed in this way. The mounting recess 42 is configured to open the both side end portions of each partition wall 41 and the housing 22 to the outside (the side opposite to the wiring board 12 side), thereby allowing the holder 51 to move freely. Further, the mounting recess 42 is formed deeper at the rear end thereof, so that the holding body 51 is allowed to tilt.

  Further, at the front end portion of the partition wall 37a between the upper and lower cavities 37, a terminal capable of retaining the terminal fitting 21 by entering the locking hole 35 of each terminal fitting 21 and engaging with the edge of the hole. A locking portion 43 is formed. Retainer mounting holes 44 to which the retainer 25 can be attached are formed in the rear portion of the upper and lower outer surfaces of the housing 22 relative to the elastic piece housing space 39 so as to communicate with the cavity 37 and open vertically. The retainer 25 is retracted from the cavity 37 to allow the terminal fitting 21 to be inserted and removed (FIG. 7), and enters the cavity 37 to reach the rear end step portion of the board connecting portion 26 in the terminal fitting 21. By being locked, the terminal fitting 21 is held by a holding means (not shown) in a state that it can move between the locking positions (FIG. 10) where the terminal fitting 21 can be prevented from coming off. In the final locking position, the outer surface of the retainer 25 is flush with the upper and lower surfaces of the housing 22. A fitting recess 45 into which the fitting projection 34 of the terminal fitting 21 can be fitted is formed on the inner surface of the front wall of the cavity 37.

  On both outer side surfaces of the housing 22, holding piece receiving groove portions 46 that can receive holding pieces 58 of the cover 24 described later are formed to be recessed (FIGS. 4 and 6). A pair of retaining wall portions 47 are formed on the rear side of the retaining piece receiving groove portion 46, and the retaining piece 58 can be abutted against the end surface of the retaining wall portions 47 facing the retaining piece receiving groove portion 46 side. The In the holding piece receiving groove 46, the cover holding projection 48 is located at a front position spaced from the both retaining walls 47 by a predetermined length (the length of the free end 58 c of the holding piece 58). Protrusively formed. A die-cutting groove is formed between the upper and lower retaining wall portions 47 for die-cutting the cover holding projection 48 rearward when the housing 22 is resin-molded. On the other hand, in the rear end portion of the upper surface, which is the outer surface along the plate surface of the wiring board 12 in the housing 22, an escape groove portion 49 for allowing the connector lock piece 53 of the cover 24 to escape is formed to open rearward. ing.

  Next, the elastic piece unit 23 will be described. As shown in FIGS. 2 to 5, the elastic piece unit 23 includes a plurality of elastic pieces 50 made of a metal material and a holding body 51 that integrally holds the elastic pieces 50. The holding body 51 is made of a synthetic resin having insulating properties, and the whole of the holding body 51 has a long and narrow block shape along the width direction of the housing 22. The holding body 51 is mounted in a loosely fitted and loosely inserted state on the mounting concave portion 42 of the housing 22, and in the mounted state, can be moved to the outside, that is, the side opposite to the wiring board 12 side. The

  Each elastic piece 50 is integrated by being inserted into the holding body 51. The elastic piece 50 is formed in a cantilever shape in which the base end portion 50a is fixed to the holding body 51. Specifically, the elastic piece 50 is temporarily once from the rear end surface of the holding body 51 to the rear side (base end side of the contact piece 28). After projecting, it is folded back into a substantially U shape and then extends almost horizontally (in parallel with the plate surface of the wiring board 12) toward the front (the free end side of the contact piece 28), and then the free end 50b. The free end 50b protrudes substantially horizontally forward after being bent obliquely inward (direction approaching the wiring board 12 or the contact piece 28) at the front position. The elastic piece 50 has a width that changes in the middle. The width from the base end portion 50a to the horizontal portion in the middle is a wide portion. On the other hand, the elastic piece 50 is bent obliquely inward to the free end portion 50b. It is a narrow part. The elastic piece 50 can be elastically deformed with the base end portion 50a fixed to the holding body 51 as a fulcrum, and is accordingly displaced in the vertical direction (direction in which the wiring board 12 and the contact piece 28 are in contact with and separated from each other). It is like that. When the elastic piece 50 is elastically deformed so as to open to the outside, the movable range of the elastic piece 50 can be restricted by engaging the front end portion of the holding body 51. The elastic piece 50 has a higher elastic force than that of the contact piece 28 during elastic deformation.

  The narrow portion of the elastic piece 50 can enter the board connecting portion 26 through the second opening 31. Since the width dimension of the narrow portion is set to be smaller than the interval between the two excessive deflection regulating portions 33 of the board connecting portion 26, the free end 50b can be inserted between the two excessive deflection regulating portions 33. . The free end 50 b of the elastic piece 50 can be brought into contact with the free end 28 a of the contact piece 28. The elastic piece 50 allows the contact piece 28 to be elastically pressed inward from the outside (the side opposite to the wiring board 12 side).

  Next, the cover 24 will be described. The cover 24 is made of metal, and as shown in FIGS. 3 to 6, the cover 24 is formed in a substantially rectangular tube shape that can entirely surround the outer peripheral surface of the housing 22. A connector lock piece 53 having a lock portion 52 for holding the mating connector 10 in a fitted state is provided on an upper portion 24 a of the cover 24 that covers the upper surface side of the housing 22. Specifically, a notch portion having a predetermined width is formed at the rear end portion of the upper portion 24a of the cover 24, and a bridging portion 54 that bridges the peripheral rear end portion of the notch portion is formed. A cantilevered connector lock piece 53 is provided so as to protrude forward. The connector lock piece 53 can be elastically deformed along the vertical direction. On the upper surface of the connector lock piece 53, a lock portion 52 that can be locked to the locked portion 13 of the mating connector 10 is provided so as to protrude upward.

  Retainer insertion holes 55 through which the retainer 25 can be inserted are formed in the upper part 24a and the lower part 24b (parts along the plate surface of the wiring board 12) of the cover 24, respectively. Of the upper part 24 a and the lower part 24 b of the cover 24, the rear part of the retainer insertion hole 55 serves as a retainer retaining part 56 capable of retaining the retainer 25. Of the upper part 24a and the lower part 24b of the cover 24, the front part of the retainer insertion hole 55 is a pressing part 57 that presses each elastic piece 50 and can be held in an elastically deformed state, as will be described in detail later.

  Cantilevered holding pieces 58 are formed on both side portions 24c of the cover 24 by slitting. The holding piece 58 is configured such that the rear end side is separated from the side portion 24c, and is elastically deformable along the width direction with the base end portion 58a on the front end side as a fulcrum. The holding piece 58 is once bent obliquely inward from the base end portion 58a to form an inclined portion 58b, and then the free end portion 58c extends rearward in parallel with the side portion 24c. A holding hole 59 into which the cover holding projection 48 on the housing 22 side can be fitted is formed in the free end 58 c that protrudes inward from the side 24 c of the holding piece 58.

  The cover 24 having the above-described configuration is assembled to the housing 22 from the rear, and the pressing portion 57 presses the elastic piece 50 and the temporary mounting position near the back where the elastic piece 50 is not pressed. Thus, it can be selectively held at two positions with the front-mounted main mounting position, and can be moved between the two positions along the front-rear direction.

  Specifically, when the cover 24 is attached to the housing 22 at the temporary attachment position, the free end portion 58c of the holding piece 58 enters the holding piece receiving groove 46 as shown in FIG. While abutting against the retaining wall portion 47 and the inclined portion 58b abutting against the rear surface of the cover holding projection 48, the cover 24 is held back and forth from the temporary mounting position. On the other hand, when the cover 24 is attached to the housing 22 at the full attachment position, the cover holding projection 48 is fitted into the holding hole 59 of the holding piece 58 as shown in FIG. It is held back and forth from the full mounting position.

  In the temporary mounting position, as shown in FIG. 10, the holding portion 57 is retracted to the rear side of the elastic piece unit 23 as a whole, but the front end portion slightly protrudes toward the elastic piece accommodating space 39. This is the hook 60 that is hooked to the rear end (folded portion) of each elastic piece 50. The hook part 60 is retracted to the rear side of the holding body 51 in the elastic piece unit 23 and the floating of the holding body 51 is allowed. In the temporary mounting position, the rear end portion of the cover 24 protrudes rearward from the rear end surface of the housing 22, and the retainer insertion hole 55 is aligned with and communicates with the retainer mounting hole 44.

  On the other hand, at the main mounting position, as shown in FIG. 15, the pressing portion 57 is arranged on the outer side of the holding body 51 of the elastic piece unit 23 and is brought into contact with the outer surface thereof. 50 can be pressed down. Specifically, in the main mounting position, the front end of the pressing portion 57 protrudes forward from the front end of the holding body 51 so that almost the entire area of the holding body 51 (excluding a small portion of the rear end portion) is pressed, thereby holding the holding body. 51 stays in the mounting recess 42 without being lifted up and is maintained in a substantially horizontal state.

  Further, in this fully mounted position, the rear end surface of the cover 24 is substantially flush with the rear end surface of the housing 22, and the lock portion 52 of the connector lock piece 53 can enter the locked portion 13 of the mating connector 10. It is arranged at the position (lock position). At this time, the retainer retaining portion 56 is engaged with the outer surface of the retainer 25, so that the retainer 25 is retained.

  This embodiment has the structure as described above, and the operation thereof will be described subsequently. First, the procedure for assembling the card edge connector 20 will be described. After the terminal fitting 21 is crimped and connected to each electric wire W at the manufacturing site of the wire harness, the terminal fitting 21 is transported to the assembly site with the housing 22 together with the electric wire W group.

  On the other hand, the retainer 25, the elastic piece unit 23, and the cover 24 are assembled in the housing 22 as shown in FIG. At this time, the cover 24 is mounted at the temporary mounting position, and the retainer 25 is mounted at the temporary locking position. In this state, the holding body 51 is loosely fitted in the mounting recess 42 so as to be movable outward, and each elastic piece 50 is accommodated in the elastic piece accommodating space 39 between the partition walls 41 and its free end portion. Although 50 b has entered the cavity 37, it does not reach the substrate insertion space 38. A hooking wall 40 is opposed to the outer side of the free end 50b of the elastic piece 50 with a predetermined gap, and the cover 24 is hooked to the outer side of the rear end (folded portion) of the elastic piece 50. The part 60 is disposed to face the adjacent position. The elastic piece 50 is caught on the hook wall 40 and the hook portion 60, thereby preventing the elastic piece unit 23 from falling off the housing 22.

  At the assembly site, the operation of housing the terminal fittings 21 connected to the electric wires W constituting the wire harness is performed on the housing 22 in the above state. When the terminal fitting 21 is inserted into the cavity 37 of the housing 22 from the rear and reaches the normal depth, the terminal locking portion 43 enters the locking hole 35 and engages with the hole edge as shown in FIG. By stopping, the terminal fitting 21 is held in a retaining state. In this process, the free end portion 50b of the elastic piece 50 is pressed outward by the free end portion 28a of the contact piece 28, so that the holding body 51 is moved outward so as to slightly float. As the holding body 51 is released, the elastic piece 50 has little or no elastic deformation. In this state, the contact portion 29 of the contact piece 28 is arranged in a state of protruding into the board insertion space 38, and the free end portion 50b of the elastic piece 50 contacts the outer surface of the free end portion 28a from the outside. Is done. When the retainer 25 is pushed into the final locking position after all the terminal fittings 21 have been inserted, the retainer 25 enters the cavity 37 and the rear end of the board connecting portion 26 as shown in FIGS. By engaging with the stepped portion, the terminal fitting 21 is secondarily retained.

  When the assembly of the card edge connector 20 is completed as described above, an operation of fitting with the mating connector 10 is subsequently performed. When the operator grips the cover 24 of the card edge connector 20 and fits it into the mating housing 11, the wiring board 12 is inserted into the board insertion space 38 from the front end side. In this process, each contact piece 28 is elastically deformed so as to open outward by the contact portion 29 being pushed by the wiring board 12. As a result, the free ends 50b of the elastic pieces 50 that are in contact with the free ends 28a of the contact pieces 28 are also pushed outward. At this time, the free end portion 50b of the elastic piece 50 is moved by the floating body 51 that is loosely fitted to the mounting recess 42 so as to float while tilting further outward with the contact portion with the hook portion 60 as a fulcrum. Due to the outward displacement, the elastic piece 50 is hardly or not elastically deformed. Therefore, in this fitting process, a force necessary to elastically deform each contact piece 28 mainly acts as a fitting resistance, and the elastic piece 50 having a larger elastic force than the contact piece 28 is almost or not at all. Since it is not bent, the operating force required for the fitting operation is reduced, and wear caused by sliding between the contact portion 29 of the contact piece 28 and the terminal connection portion of the wiring board 12 can be suppressed.

  As shown in FIGS. 12 and 13, when the cover 24 of the card edge connector 20 is further pushed forward from the state in which the front end face of the wiring board 12 is in contact with the back end face of the board insertion space 38, the cover is caused by the pushing force. The inclined portion 58b of the 24 holding pieces 58 rides on the cover holding projection 48 of the housing 22 and the holding piece 58 is elastically deformed outward, so that the locked state at the temporary mounting position is released. The cover 24 moves forward relative to the housing 22 and reaches the full mounting position. When the cover 24 reaches the full mounting position, as shown in FIGS. 14 to 16, the cover holding projection 48 is fitted into the holding hole 59 of the holding piece 58 and locked to the hole edge. The cover 24 is held at the main mounting position.

  In this process, as the pressing portion 57 of the cover 24 moves forward, the holding body 51 that has been lifted in an inclined posture is pushed inward, and is again stored in the mounting recess 42 and returned to a substantially horizontal posture. While the holding body 51 to which the base end portion 50a of each elastic piece 50 is fixed is displaced inward, the free end portion 50b of each elastic piece 50 is in contact with the free end portion 28a of the contact piece 28 and does not move. Therefore, at this time, each elastic piece 50 is elastically deformed. The elastic force of the elastic piece 50 is transmitted from the free end portion 50b to the free end portion 28a of the contact piece 28, so that the contact pressure of the contact portion 29 of the contact piece 28 to the terminal connection portion of the wiring board 12 is increased. The In the state where the main mounting position has been reached, the pressing portion 57 contacts and presses the outer surface of the holding body 51, whereby the elastic piece 50 is kept in an elastically deformed state via the holding body 51. .

  In the process of the cover 24 reaching the full mounting position, the connector lock piece 53 is temporarily deformed while being retracted into the groove 49, and when reaching the full mounting position, the connector lock piece 53 is restored and the lock portion 52 is locked. It enters into the part 13 and is locked to the hole edge. Thereby, both the housings 11 and 22 are held in a state where they are prevented from being detached from the normal fitted state. If the card edge connector 20 does not come off due to the lock even if the cover 24 is pushed in and then pulled out again, the cover 24 has reached the full mounting position and the elastic piece 50 is surely elastically deformed to obtain a desired contact pressure. Connection reliability is high. Further, in the full mounting position, the retainer 25 is held in a retaining state by the retainer retaining portion 56.

  Note that the above-described assembly procedure can be changed as appropriate. For example, the cover 24 may be moved to the full mounting position before the mating connector 10 is fitted.

  As described above, according to the present embodiment, the contact piece 28 is provided on the housing 22 with the elastic piece 50 made of a metal material that can be elastically pressed from the side opposite to the wiring board 12 side. The contact pressure of the contact portion 29 of the contact piece 28 with respect to the portion can be sufficiently obtained, so that the wiring board 12 and the terminal fitting 21 can be satisfactorily connected. Since the elastic piece 50 is made of a metal material, it can exhibit a good elastic force over a long period of time. Thus, the elastic force for obtaining a desired contact pressure is mainly assigned to the elastic piece 50. For example, in the manufacturing process of the wire harness or the process of transporting the housing 22 to the assembly site, Even if some unintentional deformation or the like occurs in the contact piece 28 exposed to the outside, the influence on the contact pressure is small. Therefore, even if some deformation occurs, the terminal fitting 21 can be used as it is, and the replacement frequency of the terminal fitting 21 can be reduced. Thus, the cost can be reduced.

  In addition, since the elastic piece 50 is pressed from the opposite side of the wiring board 12 to the housing 22 and the cover 24 capable of keeping the elastic piece 50 in an elastically deformed state is mounted, sufficient contact pressure is provided. Can be obtained.

  Further, the cover 24 can be held with respect to the housing 22 in a movable state between a temporary mounting position where the elastic piece 50 is not pressed and a main mounting position where the elastic piece 50 is held in an elastically deformed state. Therefore, when the terminal fitting 21 is accommodated in the housing 22 or when the wiring board 12 is brought into contact with the contact piece 28, the cover 24 is held at the temporary mounting position with respect to the housing 22 and is necessary for assembly. Therefore, the workability can be improved. On the other hand, sufficient contact pressure can be obtained by moving the cover 24 to the full mounting position.

  Further, the cover 24 is formed with a retainer insertion hole 55 that allows the retainer 25 to be attached to prevent the terminal fitting 21 from being detached at the temporary attachment position, and is engaged with the retainer 25 at the full attachment position. Since the retainer retaining portion 56 that can retain the retainer 25 is provided, the retainer 25 can be mounted on the housing 22 through the retainer insertion hole 55 in a state where the cover 24 is mounted at the temporary mounting position. . Furthermore, the retainer 25 can be prevented from being detached by the retainer retaining portion 56 by moving the cover 24 to the full mounting position. Excellent convenience.

  Further, since the elastic piece 50 is mounted on the housing 22 so as to be movable on the opposite side of the wiring board 12, the terminal connection of the wiring board 12 is performed before the elastic piece 50 is pressed by the cover 24. When the part is brought into contact with the contact piece 28, the elastic piece 50 is moved to the side opposite to the wiring substrate 12 side and is released, so that the force required for assembly can be reduced.

  The housing 22 is provided with a cavity 37 into which the terminal fitting 21 can be inserted, and an elastic piece accommodating space 39 that can accommodate the elastic piece 50 is formed by partially cutting away the peripheral wall of the cavity 37. In the present embodiment, a portion of the peripheral wall of the cavity 37 adjacent to the elastic piece housing space 39 is formed with a hook wall 40 that can be hooked to the end of the elastic piece 50. Can be prevented from falling off.

  Further, since the cover 24 is provided with a hook portion 60 that can be hooked to the end portion of the elastic piece 50 at the temporary attachment position, the elastic piece 50 attached to the housing 22 in a floating state can be removed. Can be prevented.

  Further, in the case where the wiring board 12 has a substantially cylindrical shape and is held in the mating housing 11 that can be fitted to the housing 22, the cover 24 has a locked portion 13 provided in the mating housing 11. Since the lock portion 52 is provided so that both the housings 11 and 22 can be held in the fitted state by being locked to each other, both the housings 11 and 22 are fitted to the terminal connection portion of the wiring board 12. The state where the 21 contact pieces 28 are in contact with each other can be maintained. In addition, when the cover 24 reaches the full mounting position with both the housings 11 and 22 fitted, the lock portion 52 is locked to the locked portion 13. If it is locked, it is ensured that the elastic piece 50 is pressed by the pressing portion 57 of the cover 24 and a sufficient contact pressure is obtained, so that the connection reliability can be kept high.

  Further, since a plurality of elastic pieces 50 are integrally held by the holding body 51 attached to the housing 22, the plurality of elastic pieces 50 can be handled integrally by the holding body 51. Moreover, since the holding body 51 is made of an insulating material, a short circuit between the terminal fittings 21 is prevented when the elastic piece 50 contacts the contact piece 28.

  Further, since the contact piece 28 is formed in a cantilever shape and its free end portion 28a is elastically pressed by the elastic piece 50, a good contact pressure can be obtained. Moreover, the elastic piece 50 is formed in a cantilever shape in which the base end portion 50 a is fixed to the holding body 51, and once protrudes from the holding body 51 toward the base end side of the contact piece 28, the contact piece 28 Therefore, the extended distance of the elastic piece 50 can be increased, and a good contact pressure can be obtained.

  Further, the cover 24 is formed in a substantially cylindrical shape surrounding the peripheral surface of the housing 22. Thereby, when the elastic piece 50 is elastically deformed, a force in a direction away from the housing 22 acts on the cover 24, but the cover 24 is formed in a substantially cylindrical shape surrounding the peripheral surface of the housing 22. Therefore, the displacement of the cover 24 due to the force is suppressed, so that the elastic force applied to the contact piece 28 is prevented from being reduced, and high connection reliability is obtained.

  In addition, a plurality of terminal fittings 21 are provided side by side in the width direction, and the number of elastic pieces 50 corresponding to each terminal fitting 21 is provided, and the contact piece 28 of each terminal fitting 21 corresponding to each elastic piece 50 is provided. Since they are pressed individually, it is possible to apply an elastic force evenly to each contact piece 28 as compared with a case where one elastic piece presses a plurality of contact pieces.

  Further, terminal connection portions are provided on both the front and back surfaces of the wiring board 12, a pair of terminal fittings 21 are arranged at positions sandwiching the wiring board 12, and the elastic pieces 50 are opposite to the wiring board 12 of each contact piece 28. Therefore, the contact pieces 28 are pressed toward the wiring board 12 by the elastic pieces 50 from both the front and back sides of the wiring board 12, and the connection reliability can be further improved. Moreover, it can respond easily also to a multipolar thing.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  (1) In the above-described embodiment, the case where the elastic piece is inserted into the holding body is illustrated. However, the elastic piece is not limited to the insert, and for example, each elastic piece is press-fitted and held in the press-fitting groove formed in the holding body. Thus, integration may be achieved.

  (2) In the above-described embodiment, the case where the elastic piece protrudes from the rear surface of the holding body has been shown, but those protruding from a surface other than the rear surface such as the front surface or the side surface of the holding body are also included in the present invention.

  (3) Although the case where the elastic piece is formed in a cantilever shape having a folded portion has been described in the above-described embodiment, it may be a cantilever shape having no folded portion. Moreover, in the above-described embodiment, the case where the free end portion of the elastic piece is used as the pressing portion for the contact piece has been described. However, for example, by pressing the portion in front of the free end portion locally, A part may be formed, or an elastic piece may be formed in an overall mountain shape, and the apex part may be used as a pressing part.

  (4) In the above-described embodiment, the case where the elastic piece is held by the holding body has been shown. However, the present invention includes the case where the holding piece is omitted and the elastic piece is directly attached to the housing. . In that case, it is possible to fix the elastic piece to the housing so as not to be movable, or to mount the elastic piece in a state in which it can move.

  (5) In the above-described embodiment, the case where the holding body is movably mounted on the housing is shown, but the holding body may be fixed so as not to be allowed to move.

  (6) In the above-described embodiment, the case where the free end portion of the elastic piece elastically presses the free end portion of the contact piece is shown, but the elastic piece directly presses the contact portion of the contact piece, or the contact point What presses the site | part of the base end side rather than a part is also contained in this invention. Moreover, you may make it form a press part in parts other than the free end part of an elastic piece, and may press a contact piece with the press part.

  (7) In the above-described embodiment, the case where the elastic pieces are formed by the number of the terminal fittings and each contact piece is individually pressed by the corresponding elastic piece is shown, but a plurality of contact pieces are formed by one elastic piece. You may make it press.

  (8) In the above-described embodiment, the case where each elastic piece is held by the holding body in a state of being separated individually is shown. However, a plurality of elastic pieces are connected and insulated from the contact surface with the contact piece. You may make it prevent the short circuit between terminal metal fittings by forming a layer.

  (9) In the above-described embodiment, the cover is shown to be movable from the rear temporary mounting position to the front main mounting position, but the temporary mounting position is set to the front side and the main mounting position is set to the rear side. These are also included in the present invention. In addition, the moving direction of the cover can be changed not only in the front-rear direction but also in the width direction.

  (10) In the above-described embodiment, the case where the temporary mounting position is set as the mounting position of the cover is shown, but the case where the temporary mounting position is omitted is also included in the present invention.

  (11) In the above-described embodiment, when the cover is in the main mounting position, the elastic piece is elastically deformed to a position just before contacting the front end of the holding body. For example, the wiring board is thicker In some cases, the elastically deformed elastic contact piece may contact the front end portion of the holding body, and such a thing is also included in the present invention.

  (12) In the above-described embodiment, the case where the partition wall that partitions between the adjacent elastic pieces is provided is shown, but the partition wall may be partially or entirely omitted.

  (13) In the above-described embodiment, the case where the cover is formed in a cylindrical shape surrounding the entire circumference of the housing has been shown. An L-shaped covering is also included in the present invention.

  (14) In the above-described embodiment, when the wiring board is inserted, the contact part is brought into contact with the wiring board and the contact piece is elastically deformed. However, the contact part is not contacted. The present invention also includes a setting and a setting in which the contact piece is contacted with the contact portion but the contact piece is not elastically deformed.

  (15) In the above-described embodiment, an example in which the contact piece is provided with a contact portion in which the contact piece locally protrudes is illustrated. However, for example, the contact piece is formed in an overall mountain shape, and the apex portion is used as the contact portion. Are also included in the present invention. Further, the contact piece is not limited to a base end on the rear end side and a free end on the front end side, but may be a cantilever shape having a base end on the front end side and a free end on the rear end side.

  (16) In the above-described embodiment, the case where both the contact piece and the elastic piece are formed in a cantilever shape is shown, but either one or both of the contact piece and the elastic piece are formed in a both-end shape. Also good.

  (17) In the above-described embodiment, the contact piece is an elastic contact piece that can be elastically deformed. However, the present invention includes a contact piece that does not have elasticity. In that case, the elastic piece shares all of the contact pressure to the wiring board.

  (18) In each of the embodiments described above, the card edge connector in which the terminal connection portions are provided on both the front and back surfaces of the wiring board and the terminal fittings are arranged in two upper and lower stages is illustrated, but only on one side of the front and back of the wiring board The present invention can also be applied to a card edge connector provided with a terminal connecting portion and having a single terminal fitting.

  (19) The number of terminal fittings and elastic pieces can be changed as appropriate.

  (20) In each of the above-described embodiments, the terminal fitting that is crimp-connected to the electric wire has been exemplified. However, the present invention can also be applied to a device that includes a terminal fitting that is pressure-connected to the electric wire. .

  (21) In the above-described embodiment, the case where the elastic piece made of the metal material is used is shown. However, the invention also includes a material other than the metal material, for example, an elastic piece made of the synthetic resin material. In that case, you may harden | cure by mixing glass fiber with a synthetic resin material.

1 is an exploded perspective view of a card edge connector according to an embodiment of the present invention. Exploded front view of card edge connector Exploded plan view of card edge connector Exploded side view of card edge connector XX sectional view of FIG. YY sectional view of FIG. XX sectional drawing of FIG. 3 which shows the state which attached the elastic piece unit, the cover, and the retainer to the housing. XX line sectional view of Drawing 3 showing the state where a terminal metal fitting was inserted The perspective view which shows the state which inserted the terminal metal fitting with the cover as a temporary attachment position 3 is a cross-sectional view taken along the line XX in FIG. 5 is a cross-sectional view taken along line YY in FIG. 5 showing a state before the mating connector is fitted. 3 is a cross-sectional view taken along the line XX in FIG. 3 showing a state in which the front end surface of the wiring board comes into contact with the back end surface of the board insertion space in accordance with the fitting. 5 is a cross-sectional view taken along line YY in FIG. 5 showing a state in which the front end surface of the wiring board is brought into contact with the back end surface of the board insertion space with the fitting. The perspective view which shows the state which used the cover as the full mounting position XX sectional drawing of FIG. 3 which shows the state which the cover reached | attained this mounting position 5 is a cross-sectional view taken along line YY in FIG.

Explanation of symbols

11 ... Mating housing (mating connector housing)
DESCRIPTION OF SYMBOLS 12 ... Wiring board 13 ... Locked part 20 ... Card edge connector 21 ... Terminal metal fitting 22 ... Housing (connector housing)
24. Cover (pressing member)
28 ... Contact piece 28a ... Free end portion 29 ... Contact portion 37 ... Cavity 37c ... Outer wall (part of peripheral wall)
39 ... Elastic piece accommodation space 40 ... Hook wall 50 ... Elastic piece 50a ... Base end part 50b ... Free end part (end part)
51 ... Holding body 52 ... Lock part 55 ... Retainer insertion hole 56 ... Retainer retaining part 60 ... Hook part

Claims (16)

A terminal having a contact piece that is configured to extend along the insertion / removal direction of the wiring board and has a contact portion that protrudes in the middle and contacts the terminal connection portion provided on the plate surface of the wiring board. Metal fittings,
A connector housing in which the terminal fitting is accommodated;
A card edge connector provided on the connector housing and provided with an elastic piece capable of elastically pressing the contact piece from the side opposite to the wiring board side. The card edge connector according to claim 1, wherein the connector housing is provided with a holding member capable of holding the elastic piece in an elastically deformed state by holding the elastic piece from a side opposite to the wiring board side. . The pressing member is held against the connector housing in a movable state between a temporary mounting position where the elastic piece is not pressed and a permanent mounting position where the elastic piece is pressed and held in an elastically deformed state. The card edge connector according to claim 2. The connector housing is fitted with a retainer capable of retaining the terminal fitting by locking the terminal fitting accommodated therein.
The holding member is formed with a retainer insertion hole that allows the retainer to be mounted at the temporary mounting position, and the retainer can be prevented from coming off by engaging with the retainer at the main mounting position. The card edge connector according to claim 3, wherein a retainer retaining portion is provided. 5. The card edge connector according to claim 2, wherein the elastic piece is attached to the connector housing so as to be movable on a side opposite to the wiring board side. 6. The connector housing is provided with a cavity into which the terminal fitting can be inserted, and an elastic piece accommodating space capable of accommodating the elastic piece is formed by cutting out a part of the peripheral wall of the cavity. In
The card edge connector according to claim 5, wherein a hook wall that can be hooked to an end of the elastic piece is formed in a portion of the peripheral wall of the cavity adjacent to the elastic piece housing space. The pressing member is held against the connector housing in a movable state between a temporary mounting position where the elastic piece is not pressed and a permanent mounting position where the elastic piece is pressed and held in an elastically deformed state. And
The card edge connector according to claim 5 or 6, wherein the holding member is formed with a hook portion that can be hooked to an end portion of the elastic piece at the temporary mounting position. The wiring board is formed in a substantially cylindrical shape and is held in a mating connector housing that can be fitted to the connector housing.
The lock member is provided with a lock portion capable of holding both connector housings in a fitted state by engaging with a locked portion provided in the mating connector housing. 8. The card edge connector according to any one of 7 above. The pressing member is held with respect to the connector housing in a movable state between a temporary mounting position where the elastic piece is not pressed and a main mounting position where the elastic piece is pressed and held in an elastically deformed state. 9. The card edge connector according to claim 8, wherein the lock portion is locked to the locked portion when the pressing member reaches the main mounting position in a state where both the connector housings are fitted. . The card edge connector according to any one of claims 1 to 9, wherein a plurality of the elastic pieces are integrally held by a holding body attached to the connector housing. The card edge connector according to claim 10, wherein the elastic piece is made of a metal material, and the holding body is made of an insulating material. The card edge connector according to any one of claims 1 to 11, wherein the contact piece is formed in a cantilever shape and a free end thereof is pressed by the elastic piece. A plurality of the elastic pieces are integrally held by a holding body attached to the connector housing,
The elastic piece is formed in a cantilever shape in which a base end portion is fixed to the holding body, and once protrudes from the holding body toward the base end side of the contact piece, the free end of the contact piece The card edge connector according to claim 12, wherein the card edge connector is folded toward the side. The card edge connector according to any one of claims 2 to 13, wherein the pressing member is formed in a substantially cylindrical shape surrounding the peripheral surface of the connector housing. The card edge according to any one of claims 1 to 14, wherein a plurality of the terminal fittings are provided side by side in the width direction, and the number of the elastic pieces corresponding to each of the terminal fittings is provided. connector. The terminal connection portions are provided on both the front and back surfaces of the wiring board, a pair of the terminal fittings are arranged at positions sandwiching the wiring board, and the elastic pieces are opposite to the wiring board side of the contact pieces. The card edge connector according to claim 1, wherein the card edge connector is arranged in a pair.

Images