JP3493715B2 - Wiring connection device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring connecting device which is held by a mating connecting device in a state in which the tip surfaces of contacts protruding from the body are inserted into the mating connecting device.

[0002]

2. Description of the Related Art Generally, a plug used as a connecting device for wiring of this type has a plug blade as a contact inserted into an outlet as a counterpart connecting device, and a plug is provided by a blade receiving spring provided in the outlet. The blade is configured to be clamped in a direction orthogonal to the insertion direction. However, this structure has a problem that a large frictional force is exerted between the blade and the blade receiving spring when the blade is inserted and removed, and a large force is required to insert and remove the blade. That is, when connecting the plug to the outlet, the insertion amount of the blade may be insufficient, and if the wire connected to the plug is hooked with your foot and tension acts on the wire, the plug will There is a problem that the electric wire is broken without coming off.

This kind of problem is caused by the blade receiving spring also serving as a member electrically connected to the blade as a contactor and a member for mechanically connecting the blade.
Therefore, the electrical connection member and the mechanical coupling member are separated,
It has been considered to reduce the electrical contact resistance while reducing the mechanical coupling force. For example, it is considered that a receiving piece that elastically contacts the tip end surface of the contactor is provided in the other party connecting device to make an electrical connection, and the other party connecting device is mechanically coupled by magnetic force.

[0004]

As described above, when mechanical coupling is performed by magnetic force, it is necessary to provide a permanent magnet on one of the members to be coupled to each other and an iron piece on the other member. . When a permanent magnet is provided in this way,
Since iron powder or the like tends to adhere, problems such as a short circuit between contacts may occur. There is also a problem that it is difficult to adjust the mechanical binding force with a magnetic force to obtain a desired binding force.

The present invention is intended to solve the above problems, and mechanical coupling and electrical connection are performed by separate members, and mechanical coupling is performed without using a permanent magnet. It is therefore an object of the present invention to provide a wiring connecting device capable of preventing an accident due to adhesion of iron powder or the like and easily obtaining an appropriate coupling force.

[0006]

According to a first aspect of the present invention, there is provided a container in which a projecting stand inserted between the facing surfaces of the holding wall, at least a part of which is formed in the mating connecting device, is projected on one surface. A body and a contactor that is electrically connected to an external circuit and that is provided on the tip end surface of the protrusion and that is inserted into the mating connection device and that contacts the receiving piece provided on the mating connection device with its tip.
Equipped with locking claws with arcuate cross-sections that engage with the locking holes respectively formed on the opposing surfaces of the holding wall, and attached to the body so that the locking claws can move forward and backward with respect to the side surface of the projecting base. a lock member which is, Ri formed by and a return spring for spring biasing the lock member in a direction to protrude the locking claw from the side of 突台,
In the part where the locking claw is introduced into the locking hole on the facing surface of the holding wall,
Each has a hooking protrusion that can be inserted.
The rear side, which is close to the mouth, increases the distance from each other toward the rear.
The feature is that the guide surface is inclined like a comb .

According to a second aspect of the present invention, in the first aspect of the invention, the projecting base is formed in a hollow shape, and the lock body is penetrated inward and outward so as to extend over the side surface and the tip end surface from which the locking claws project. The mounting member is formed with a mounting hole, and the lock body is provided integrally with the main piece along the side surface of the projecting stand and the front end surface of the projecting stand and on the front end surface side of the projecting stand in the main piece. A slide piece whose one end on the side is a locking claw, and the main piece is provided with a retaining projection that is locked to the inner peripheral surface on the side surface side of the projecting stand. The end portion on the opposite side is locked to the inner peripheral surface on the front end surface side of the protrusion, and a guide groove is cut out at a position on the front end surface side of the protrusion on the peripheral edge of the attachment hole in the advancing and retracting direction of the locking claw A guide protrusion that slides in the guide groove is protrudingly provided on the slide piece, and a coil spring is provided between the lock bodies provided on both sides of the protrusion. Comprising a return spring is characterized by comprising been sandwiched.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the blade insertion opening into which the blade of the plug is inserted is opened on one surface of the body adjacent to the projecting surface of the protruding base. ,
It is characterized in that a blade receiving portion for receiving the blade of the plug inserted through the blade insertion port and an electric circuit board for electrically connecting the blade receiving portion to the contact are housed in the body. The invention of claim 4 is characterized in that, in the invention of claim 3, the contact is crimped and fixed to the electric circuit board.

A fifth aspect of the present invention is characterized in that, in the first or second aspect of the invention, the contactor has a contact material adhered to the front end surface thereof. The invention of claim 6 is the same as claim 1.
Alternatively, in the invention of claim 2, the contact is formed in a pin shape having a circular cross section and a tip end portion having a convex curved surface.

[0010]

According to the structure of the invention of claim 1, the protrusion which is projectingly provided on the body is inserted between the facing surfaces of the holding wall of the counterpart connecting device, and the protrusion which projects forward and backward to the side face of the protrusion. By engaging the retaining claw with the retaining hole provided in the retaining wall in an uneven manner,
The mechanical connection is made with the counterpart connection device. In addition, the contacts that are provided on the tip end surface of the projecting stand are used to electrically connect to the counterpart connecting device. Therefore, the electrical connection and the mechanical coupling can be performed by separate members, and the design according to the respective requirements of the electrical specifications and the mechanical specifications can be performed. Here, the locking claw is provided on the lock body attached to the body, and the lock body is biased by the return spring in the direction in which the locking claw protrudes from the side surface of the projection base.
Mechanical characteristics can be easily set by adjusting the inclination angle of the guide surface, the shape of the locking claw, and the spring constant of the return spring.
An appropriate binding force can be easily obtained as compared with the case of using magnetic force. Moreover, since magnetic force is not used, accidents due to adhesion of iron powder, etc. will not occur.

According to the second aspect of the present invention, the lock body is mounted in the mounting hole provided in the hollow projecting base, and the coil spring is provided between the lock bodies provided on both sides of the projecting base. By attaching a spring, the locking claw of the lock body can be moved back and forth with respect to the side surface of the projection base, and one end of the slide piece provided on the lock body and the retaining projection provided on the main piece are projected. The lock body is prevented from coming off by engaging with the inner peripheral surface of the table. Moreover, since two lock bodies are spring-biased by one return spring, the number of parts is small and the structure is simple. In addition, by sliding the guide protrusion projecting on the slide piece of the lock body in the guide groove provided in the peripheral edge of the mounting hole, the moving direction of the lock body is regulated by the guide groove and the guide protrusion, and as a result, The locking claw can be smoothly advanced and retracted without rattling, and can be smoothly attached to and detached from the counterpart connection device.

According to the structure of the third aspect of the present invention, the electric path plate electrically connected to the contactor is connected to the blade receiving portion for receiving the plug blade of the plug, and cannot be connected to the counterpart connecting device. By connecting the plug having the plug blade to the blade receiving portion, it becomes possible to connect the plug to the counterpart connecting device. That is, an adapter for converting a connection form between a plug having a flat blade and a mating connection device, which has been conventionally provided such that electrical connection and mechanical connection to an outlet are performed by one member. As a result, even with the conventional plug, it is possible to perform the electrical connection and the mechanical connection to the counterpart connection device by separate members. Further, since the contactor and the blade insertion port are formed on the surfaces adjacent to each other in the body, compared with the case where the insertion direction of the contact and the insertion direction of the blade are the same, it is It is possible to reduce the protruding size from the other party connecting device in the mounted state, and when the other party connecting device is fixed to the wall surface etc., it accidentally collides with the body and falls off from the other party connecting device. The possibility can be reduced.

According to the structure of the fourth aspect of the present invention, since the contactor is caulked and fixed to the electric circuit board, there is no loosening of the connected state as in the case where the contactor is screwed into the electric circuit board. The electrical characteristics do not change over a long period of time. According to the configuration of the invention of claim 5, the contact material is adhered to the tip end surface of the contactor, so that the electrical connection state to the receiving piece of the counterpart connection device is improved, and the contact resistance can be reduced. it can. That is, the reliability of the contact portion between the receiving piece and the contactor of the counterpart connection device is improved.

According to the structure of the sixth aspect of the present invention, since the contactor is formed into a pin shape having a circular cross section and a tip end portion having a convex curved surface, the tip end portion of the contactor can be smoothly connected to the counterpart connecting device. Can be inserted.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT As shown in FIGS. 1 to 3, a body 1 is formed by connecting a cover 10 formed of an insulating material such as synthetic resin and a body 20 with an assembly screw 2. The assembly screw 2 is inserted into the cover 10 through the body 20 and is screwed into the assembly hole 11 formed in the cover 10 to couple the cover 10 to the body 20.
A protrusion 21 is provided on the outer surface of the cover 10, and the protrusion 21
A round pin-shaped contactor 31 is inserted through a pair of insertion holes 22 that are open at the tip end surfaces of the. As shown in FIG. 4, one end portion of the contactor 31 in the longitudinal direction is caulked and fixed to one end portion of the electric circuit board 32 installed in the body 1. That is, an outer flange 31a is integrally formed at one end of the contactor 31, and one end of the contactor 31 provided with the outer flange 31a is provided on a circuit board 32 made of a metal plate of a good conductor (copper alloy). After the outer flange 31a is inserted into the hole 32a and the outer flange 31a is brought into contact with the electric circuit board 32, one end of the contactor 31 is caulked to fix the contactor 31 to the electric circuit board 32. The contactor 31 has a circular cross section and the other end has a convex curved surface forming a part of a spherical surface. A contact material 31b is attached to the other end of the contactor 31,
The electrical connection with the counterpart connection device is made good. As the contact material 31b, a silver-nickel alloy (so-called silver contact) is generally used because it has good conductivity and durability and is relatively inexpensive, but gold can be used if necessary.

Inside the cover 10, two storage chambers 13 surrounded by a partition wall 12 are formed, and in each storage chamber 13 is housed a blade receiving portion 33 continuously and integrally provided at the other end of the electric circuit board 32. To be done. The blade receiving portion 33 is formed in a shape in which a pair of spring pieces 33 a are opposed to each other, and a flat blade blade of a generally used plug can be coupled to the blade receiving portion 33. Further, a plug blade insertion opening 14 for introducing the plug blade of the plug into the blade receiving portion 33 is opened in a portion extending over the joint between the body 20 and the cover 10. A positioning protrusion 32b protruding in the protruding direction of the contactor 31 is provided at an intermediate portion of the electric path plate 32, and the positioning protrusion 32b is fitted into a positioning groove (not shown) provided on the inner peripheral surface of the body 20. By doing so, the electric path plate 32 is positioned with respect to the body 20. A part of the electric circuit board 32 is a pair of base ribs 15 formed inside the cover 10.
By being placed on the contact plate 31, the electric path plate 32 is prevented from bending even when a force in the longitudinal direction acts on the contactor 31.

By the way, the inside of the protrusion 21 is hollow, and mounting holes 22 are formed on both sides of the protrusion 21 so as to extend over the front end surface and the side surface of the protrusion 21. The protrusion 2 faces the tip surface of the protrusion 21 on the periphery of the mounting hole 22.
A guide groove 22a is cut out in the central portion of the peripheral edge parallel to the side surface of 1. A lock body 40 is mounted in each of the mounting holes 22, and a return spring 41 made of a coil spring is sandwiched between the lock bodies 40 inside the protrusion 21. As shown in FIGS. 5 and 6, the lock body 40 has a substantially T-shaped cross section in which a slide piece 43 that is orthogonal to the main piece 42 is integrally formed at one end of the main piece 42. On both side surfaces, a retaining projection 42a running along the longitudinal direction of the side surface of the main piece 42.
Is formed. Further, one end surface of the slide piece 43 becomes a locking claw 43a formed in an arcuate cross section, and a guide projection 43b is formed on one surface of the slide piece 43 opposite to the main piece 42.
Is projected. Then, this lock body 40 is
The lock body 4 is attached to the body 20 from the inside of the lock body 4 and the end portions of the slide piece 43 on the side opposite to the locking claws 43a are locked to the inner peripheral surface of the protrusion 21.
0 is prevented from falling out of the body 20. Further, the main piece 42 of the lock body 40 comes into contact with the pressing rib 16 provided on the cover 10 to prevent the main piece 42 from falling off to the cover 10 side. In addition, the guide protrusion 4 of the lock body 40
3b meshes with the guide groove 22a, and the movement direction of the lock body 40 is regulated by the guide groove 22a and the guide protrusion 43b. Here, a slide groove 23 is formed in a portion of the inner peripheral surface of the protrusion 21 where a part of the slide piece 43 is locked, and the movement of the lock body 40 is also caused by the slide piece 43 and the slide groove 23. The range is regulated. As shown in FIG. 6, a spring receiving recess 42b that opens in a circular shape is formed in the main piece 42 of the lock body 40.
The return spring 41 is held by inserting the end of the return spring 41 into the spring receiving recess 42b as shown in FIG.

The lock body 40 is attached to the mounting hole 2 as described above.
If the external force does not act in the state of being attached to 2, the locking projection 4
2a comes into contact with the inner peripheral surface of the protrusion 21, and as shown in FIG.
The main piece 42 is substantially flush with the side surface of the protrusion 21, and the locking claw 43 a protrudes from the side surface of the protrusion 21. On the other hand, the locking claw 4
When a force for pushing the 3a into the protrusion 21 is applied, the return spring 41 is compressed and the locking claw 43a retracts toward the protrusion 21 side.

As shown in FIGS. 9 and 10, the mating connecting device for connecting the above-mentioned wiring connecting device is, for example, as shown in FIGS. 9 and 10, a rectangular tubular holding wall 51 surrounding the four circumferences of the protrusion 21 on the front surface of the case 50. And a pair of insertion openings 52 into which the contacts 31 are inserted are formed on the bottom surface of the portion surrounded by the holding wall 51. Inside the case 50, a receiving piece (not shown) that is spring-biased so as to elastically contact the tip end surface of the contactor 31 inserted through the insertion opening 52 is installed. Further, on the inner surface of the holding wall 51, a locking hole 53 with which the locking claw 43a engages when the projecting base 21 is inserted is formed in a portion surrounded by the holding wall 51.

By the way, a hooking projection 54 is projected at the introduction portion of the locking claw 43a into the locking hole 53, and when the projecting base 21 is inserted into the holding wall 51, the locking claw 43a is locked. It is adapted to be introduced into the locking hole 53 by getting over the hooking protrusion 54. Here, the hooking protrusion 54 is
The front surface side is an introduction surface 54a inclined so as to reduce the mutual distance toward the rear side, and the rear surface side is formed as a guide surface 54b inclined so as to increase the mutual distance toward the rear side. . Therefore, when the contactor 31 is inserted into the insertion opening 52, the force required for insertion can be adjusted according to the inclination angle of the introduction surface 54a,
Further, when the contactor 31 is pulled out from the insertion opening 52, the force required to pull it out can be adjusted according to the inclination angle of the guide surface 54b. That is, the introduction surface 54a and the guide surface 5
It is possible to set the specifications of the insertion force and the withdrawal force according to the inclination angle with respect to 4b. After all, the force required for inserting / removing the contactor 31 is equal to the introduction surface 54a of the hooking protrusion 54 and the guide surface 5.
4b, the respective inclination angles, the cross-sectional shape of the tip of the locking claw 43a, and the spring constant of the return spring 41. Therefore, it is possible to easily obtain desired characteristics as compared with the case of using magnetic force. You can do it. Moreover, it is possible to make the magnitude of the force different at the time of insertion and at the time of pulling out, and in this respect also, the degree of freedom in design is increased as compared with the case of using magnetic force.

Further, since the hooking projection 54 is provided with the introduction surface 54a and the guide surface 54b, the locking claw 43a is formed.
The contact 3 at a position in the middle of the range where the
If the boundary position where the contact 31 and the receiving piece separate from each other does not stop at 1 is set within this range, the hooking claw 4
When 3a engages with the hook hole 53, the contact piece 3 is attached to the receiving piece.
When 1 is inevitably elastically contacted and the engagement between the hook claw 43a and the hook hole 53 is released, it is guaranteed that the contactor 31 does not contact the receiving piece. That is, there is no inconvenience that mechanical connection is made with insufficient electrical connection or electrical connection is made with insufficient mechanical connection.

An opening / closing element (not shown) is provided in the case 50 of the counterpart connecting device so as to correspond to a portion between the insertion opening 52 and the receiving piece. In the state where the contactor 31 is not inserted, the opening / closing member blocks the space between the insertion opening 52 and the receiving piece to prevent foreign matter from entering the case 50 through the insertion opening 52, and the contactor 31 is inserted into the insertion opening. When it is inserted into 52, it receives the insertion force to open the insertion opening 52. However, since the tip of the contactor 31 is formed into a spherical shape as described above, the contactor 31 is inserted into the insertion opening 52.
Even if the center line of the contactor 31 is slightly displaced from the center of the insertion opening 52 when it is inserted into the
2, the contactor 31 is inserted into the insertion opening 52.
It can be introduced smoothly. Moreover, since the tip of the contactor 31 has a spherical shape, the contactor 31 smoothly abuts against the opening / closing element and the opening / closing operation of the opening / closing element is smoothly performed.

However, as shown in FIG. 11, the case 5
0 is fixed to a wall surface or the like, and the body 1 of the wiring connecting device of the present embodiment is coupled to the case 50, the flat blade 56 of the plug 55 used in general electric equipment is mounted. Body 1
A general electric device can be connected to the case 50 by inserting into the case 50. Further, since the case 50 and the body 1 are held by the engagement claw 43a engaging with the engagement hole 53, the mechanical coupling strength can be made relatively small, and the electric wire connected to the plug 55 can be obtained. It is possible to prevent the body 1 from being easily detached from the case 50 and exerting a large tension on the electric wire even if a foot or the like is hooked on the electric wire. Moreover, the contactor 31 is the case 50 of the counterpart connection device.
The contact piece 31 is pushed out from the case 50 when the engagement state between the engagement claw 43a and the engagement hole 53 is released because the receiving piece provided inside urges the case 50 to push it out. This also allows the body 1 to be easily removed from the case 50. Also,
Since the protruding direction of the contactor 31 from the body 1 and the direction of inserting the plug blade 56 of the plug 55 into the body 1 are orthogonal to each other, the case 50 from the case 50 in the state where the body 1 is coupled to the case 50 is The projecting size of the body 1 can be reduced.

[0024]

According to the invention of claim 1, an engaging claw which is inserted into the opposing surfaces of the holding wall of the mating connecting device while projecting the projecting base projecting on the body, and which projects forward and backward on the side surface of the projecting base. By engaging with the holding hole provided in the holding wall in a concave-convex manner, mechanical connection with the mating connecting device is made, and electrical contact with the mating connecting device is made by the contact piece protruding from the tip surface of the projecting base. Therefore, there is an advantage that the electrical connection and the mechanical coupling can be performed by separate members, and the design according to the respective requirements of the electrical specifications and the mechanical specifications can be performed. Here, the locking claw is provided on the lock body attached to the body, and the lock body is biased by the return spring in the direction to cause the locking claw to project from the side surface of the projection base. Mechanical characteristics can be easily set by adjusting the inclination angle of the surface, the shape of the locking claw, and the spring constant of the return spring, and an appropriate coupling force can be easily obtained compared to the case of using magnetic force. There is an advantage that you can. Further, since magnetic force is not used, there is an advantage that an accident due to adhesion of iron powder or the like does not occur.

According to the second aspect of the present invention, the lock body is mounted in the mounting hole provided in the hollow protruding base, and the return spring formed of the coil spring is mounted between the lock bodies provided on both sides of the protruding base. This allows the locking claws of the lock body to move forward and backward with respect to the side surface of the protrusion, so that one end of the slide piece provided on the lock body and the retaining projection provided on the main piece are provided on the inner peripheral surface of the protrusion. Locking prevents the lock body from coming off. Moreover, since two lock bodies are spring-biased by one return spring, there is an advantage that the number of parts is small and the configuration is simple. In addition, since the guide protrusion protruding from the slide piece of the lock body slides in the guide groove provided in the peripheral edge of the mounting hole, the moving direction of the lock body is restricted by the guide groove and the guide protrusion, and as a result, There is an advantage that the pawl can be smoothly advanced and retracted without rattling, and can be smoothly attached to and detached from the counterpart connection device.

According to the third aspect of the present invention, since the circuit board electrically connected to the contactor is connected to the blade receiving portion for receiving the plug blade of the plug, the plug blade has a shape that cannot be connected to the counterpart connecting device. By connecting the plug to the blade receiving portion, it becomes possible to connect the plug to the counterpart connecting device. That is, an adapter for converting a connection form between a plug having a flat blade and a mating connection device, which has been conventionally provided such that electrical connection and mechanical connection to an outlet are performed by one member. As a result, even with the conventional plug, there is an advantage that the electrical connection and the mechanical connection to the counterpart connection device can be performed by separate members.
Further, since the contactor and the blade insertion port are formed on the surfaces adjacent to each other in the body, compared with the case where the insertion direction of the contact and the insertion direction of the blade are the same, it is It is possible to reduce the protruding size from the other party connecting device in the mounted state, and when the other party connecting device is fixed to the wall surface etc., it accidentally collides with the body and falls off from the other party connecting device. There is an advantage that the possibility can be reduced.

According to the fourth aspect of the present invention, since the contactor is caulked and fixed to the electric circuit board, the loosening of the connected state does not occur as in the case where the contactor is screwed into the electric circuit board, and the contact is prevented for a long time. Therefore, there is an effect that no change in electrical characteristics occurs. According to the invention of claim 5, the contact material is adhered to the tip end surface of the contact, so that the electrical connection state with respect to the receiving piece of the counterpart connecting device is improved, and the contact resistance can be reduced. is there. That is, there is an advantage that the reliability of the contact portion between the receiving piece and the contactor of the counterpart connection device is improved.

According to the invention of claim 6, since the contactor is formed in a pin shape having a circular cross section and a tip end having a convex curved surface, it is possible to smoothly insert the tip end part of the contactor into the counterpart connecting device. There is an advantage that you can.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment.

FIG. 2 is a bottom view showing an example.

FIG. 3 is a front view showing an example.

FIG. 4 is a process drawing showing an assembling process of a contactor and an electric circuit board used in an embodiment.

FIG. 5 is a perspective view of a lock body used in the embodiment.

6A and 6B show a lock body used in an embodiment, FIG. 6A is a side view, FIG. 6B is a plan view, and FIG. 6C is a rear view.

FIG. 7 shows a main part of the embodiment, (a) is a horizontal sectional view,
(B) is a longitudinal sectional view.

FIG. 8 is a perspective view of a main part of the embodiment.

FIG. 9 is a sectional view showing a state in which the embodiment is connected to a counterpart connection device.

FIG. 10 is a cross-sectional view showing a state in which the embodiment is connected to a counterpart connection device.

FIG. 11 is a perspective view showing a usage pattern of the embodiment.

[Explanation of symbols]

1 body 14 Plug blade insertion port 21 stand 22 Mounting hole 22a guide groove 31 Contact 32 circuit board 33 Blade receiving part 40 rock body 41 Return spring 42 Main piece 42a retaining projection 43 Slide piece 43a Locking claw 43b Guide protrusion 51 retaining wall 53 locking hole

Continuation of the front page (56) References JP 59-60979 (JP, A) JP 62-219479 (JP, A) JP 4-359878 (JP, A) JP 7-135040 (JP , A) Unexamined Japanese Patent Publication No. 7-183062 (JP, A) Actual Open Sho-50-151085 (JP, U) Actual Open Flat 5-90726 (JP, U) Actual Open Flat 5-75914 (JP, U) Actual Open Flat 2-73072 (JP, U) (58) Fields surveyed (Int.Cl. ⁷ , DB name) H01R 31/06 H01R 13/20 H01R 13/639 H01R 31/00

Claims (6)

(57) [Claims] 1. A body having a projecting base projecting on one surface, which is inserted between opposing surfaces of holding walls, at least a part of which is formed on the counterpart connecting device, is electrically connected to an external circuit. In addition, the contactor is provided on the tip end surface of the projecting stand and is inserted into the mating connector and the tip contacts the receiving piece provided on the mating connector, and the locking hole formed on the opposing surface of the holding wall. The lock body is provided with locking pawls formed in an arcuate cross section that engages in a concave-convex shape and is attached to the body so that the locking pawls can advance and retreat with respect to the side surface of the projection base, and the locking pawls on the side surface of the projection base. from Ri formed a lock member in a direction to and a return spring for spring-loaded to project, to the locking holes in the opposing surfaces of the retaining wall
A hooking projection is provided on each of the introduction parts of the locking claws.
The hooking protrusion, the rear side of the
Guide surface that is inclined to increase the mutual distance.
Wiring connection apparatus characterized by that. 2. The lock base is formed in a hollow shape, and is formed with a mounting hole through which a lock body is mounted so as to penetrate inward and outward so as to extend over a side surface from which a locking claw protrudes and a front end surface. Is a slide that is integrally provided on the main piece along the side surface of the projecting stand and along the tip end surface of the projecting table and on the tip end surface side of the projecting stand of the main piece, and one end portion on the side surface side of the projecting table is a locking claw. And the main piece has a retaining projection that is locked to the inner peripheral surface of the side surface of the protrusion, and the end of the slide piece on the side opposite to the locking claw in the forward / backward direction is the tip surface side of the protrusion. The guide groove is engaged with the inner peripheral surface of the mounting hole, and a guide groove is formed in a part of the periphery of the mounting hole on the tip end surface side of the protrusion in the advancing / retracting direction of the locking claw. A protrusion is provided to project, and a return spring made of a coil spring is sandwiched between lock bodies provided on both sides of the protrusion. The wiring connection device according to claim 1. 3. A blade for receiving a plug blade of a plug inserted through the plug blade insertion opening, the plug blade insertion opening into which the plug blade of the plug is inserted is opened on one surface adjacent to the projecting surface of the protrusion in the body. The wiring connection device according to claim 1 or 2, wherein a receiving portion and an electric circuit board that electrically connects the blade receiving portion to the contact are housed in the body. 4. The wiring connecting device according to claim 3, wherein the contact is caulked and fixed to the electric circuit board. 5. The wiring connecting device according to claim 1 or 2, wherein the contactor has a tip end surface coated with a contact material. 6. The contactor is formed in the shape of a pin having a circular cross section and a tip having a convex curved surface.
Alternatively, the wiring connection device according to claim 2.