JPH04136869U - IDC connector - Google Patents

Abstract

(57) [Summary] [Purpose] To securely fix electric wires and pressure contact terminals in pressure contact connectors used for automobile wire harnesses, etc. [Structure] Terminal accommodating chambers are arranged side by side in a housing of a pressure welding connector, the terminal accommodating chambers are opened on the top surface, and a terminal locking portion is provided that protrudes from the front edge of the opening to the top surface of the opening, and
A flat plate part that provides a cover insertion hole in the front part of the upper wall of the housing, inserts the front part into the cover insertion hole and closes the top opening of the terminal accommodating chamber, and each terminal accommodating chamber at the rear end of the flat plate part. A cover with a protrusion protruding downward is provided at a position corresponding to the protrusion, and the protrusion of the cover is designed to sandwich the electric wire from the front and rear between the lower end of the cover and the rear end of the lower surface of the terminal accommodating chamber, and The front end surface serves as a locking surface for the pressure contact terminal.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a pressure welding connector, and more specifically, it has a wire fixing function and a terminal locking function. It is equipped with a cover, especially for electronic equipment, automobile wire harnesses, etc. Suitable for use in insulation displacement connectors equipped with accommodation chambers for accommodating insulation displacement terminals for several electric wires. It is something.

0002

[Conventional technology]

Conventionally, it accommodates and holds pressure contact terminals connected to numerous electric wires such as automotive wire harnesses. In a pressure welding connector, there are many terminal housing chambers arranged in parallel inside the housing. Insert the pressure contact terminal into the terminal, and lock the pressure contact terminal with the terminal locking part formed inside the terminal housing chamber. After holding the housing, attach the cover to the housing and close the opening inside the containment chamber. The cover usually has only an insulating function and does not have a wire fixing function.

0003 Therefore, the holding force of the wire is weak, and when a tensile force is applied to the wire, the end connected to the wire may The wire moves inside the terminal housing chamber, causing poor contact, and the terminal comes out along with the wire. Sometimes. In addition, damage can easily occur due to repeated connection and disconnection of male and female connectors. There are also drawbacks.

0004 In order to eliminate the above-mentioned drawbacks, as shown in Fig. 7, the housing of the pressure welding connector is A cover 2 protrudes downward from the rear end of the cover 2 to close the rear upper opening of the ring 1. The electric wire 5 is provided with a protrusion 2a and attached to the pressure contact terminal 3 housed in the terminal housing chamber 1a. is bent and fixed by the projection 2a.

[0005] Also, as shown in Fig. 8, the In the case of the type in which the pressure contact blade 3a' of the pressure contact terminal 3' is perpendicular to the connector mating surface, The electric wire 5 attached to the pressure contact terminal 3' is bent by both side walls 2b' of the cover 2'. There are also some that are fixed in place.

[0006]

[Problem that the idea aims to solve]

However, in the connector shown in FIG. 7 above, the electric wire 5 is When a tensile force is applied to the bent portion 5a of the wire 5, the arrow indicates that the cover 2 is being removed. This force acts, causing the cover 2 to deform and come off. Therefore, cover 2 protects the wires. 5 had the drawback that it could not be fixed securely. Similarly, in the connector shown in Figure 8, , the tensile force acting on the electric wire 5 causes a force to try to remove the cover 2', and the cover The bar 2' deforms and separates, making it impossible to securely fix the electric wire.

[0007] In addition, in any of the above connectors, the pressure contained in the terminal accommodation chamber is The contact terminals are held only by the locking parts 1b and 1b' formed on the wall of the terminal storage chamber. Therefore, there was a drawback that the terminal could not be securely locked inside the terminal housing chamber.

[0008] This invention was created in view of the above problems, and has a sufficient wire fixing function. In addition, we would like to provide a pressure welding connector equipped with a cover that also has a function of locking the pressure welding terminals. It is something that

[0009]

[Means to solve the problem]

That is, the present invention provides terminal housing chambers in parallel in the housing of the pressure welding connector via the partition wall. If the upper surface of these terminal accommodating chambers is opened by cutting out the upper wall of the housing, Both are provided with a terminal locking portion that protrudes from the front edge of the opening to the upper surface of the opening, and A cover insertion hole is provided in the front part of the top wall of the Insert the front part into the cover insertion hole of the above housing and open the top surface of the terminal accommodation chamber. A flat plate part that closes the section, and a lower part at a position corresponding to each terminal accommodating chamber at the rear end of the flat plate part. A cover with a protruding protrusion is provided, The lower end of the protrusion on the cover is located behind the rear end of the lower surface of the terminal housing chamber, and the lower end of the protrusion on the cover is The wire should be pinched from the front and rear directions, and the front end surface of the protrusion should be aligned with the locking surface of the pressure contact terminal. It is characterized by a structure that locks the pressure contact terminal housed in the terminal housing chamber. The present invention provides a pressure welding connector.

0010 In the above housing, the center partition wall is thicker than the left and right outer walls by the thickness of the cover flat plate. It is set low, and a protrusion for locking the cover is provided on the upper surface of the rear end of the partition wall. It is designed to be locked with a locking groove formed on the rear end surface of the flat plate part. Therefore, the cover The front part is held inside the cover insertion hole, and the rear part is positioned by a locking protrusion. is retained.

[0011] In addition, the cover insertion hole should be passed through to the front end surface of the housing, and the flat plate part of the cover should be inserted into the housing. It can be extended to the front end of the cover, or it can be closed by opening only the rear end on the side where the cover is inserted. The front end of the flat plate portion of the cover may be fitted into the cover insertion hole as the hole. . The front edge of the flat plate part of the cover is chamfered to form a rounded shape to facilitate insertion into the cover insertion hole. It is smooth and prevents damage upon contact.

0012 Each protrusion provided on the above cover consists of a front part that protrudes perpendicularly from the bottom of the flat plate part; The tapered part is inclined backwards from the step part, and extends horizontally from the lower end of the tapered part. It consists of a rear section and a wire guide section provided at the rear end of the rear section, and the front end surface of the front section is It becomes the locking surface of the pressure contact terminal, the tapered part becomes the wire bending part, and the front edge of the rear part becomes the It is located at a predetermined distance behind the rear edge of the lower surface of the terminal storage chamber, and the electric wire is inserted between the terminals. It is designed to be held between the front and back directions.

[0013]

[Effect]

In the pressure welding connector of the present invention having the above configuration, the pressure welding terminals are connected to each terminal housing chamber. The wires that are subsequently attached are connected to the rear edge of the lower surface of the terminal housing chamber and the lower edge of the protrusion of the cover. The tension on the wire that is held between the It has a deterrent effect against force.

[0014] In addition, for the pressure welding terminal inserted into each terminal housing chamber, a terminal retainer provided in the terminal housing chamber is provided. Double locking is performed: one by the stopper and the other by the front end of the protrusion of the cover. The terminal is securely locked in the specified position in the terminal housing chamber, and the terminal is not loose in the terminal housing chamber. It is possible to reliably prevent the occurrence of contact failures and contact failures, and also prevent the terminals from coming off.

[0015]

【Example】

Hereinafter, the present invention will be explained in detail with reference to embodiments shown in FIGS. 1 to 5. In the figure, 10 is a housing, 11 is a cover, and a terminal accommodation chamber of the housing 10. After accommodating the pressure contact terminal 13 connected to the electric wire W in the cover 12, the cover 11 is attached to the housing. attached to the top surface of the tag 10.

[0016] A plurality of terminal accommodating chambers 12 are arranged in parallel in the housing 10 with a partition wall 14 interposed therebetween. The top wall 15 of the housing is cut out from the rear end to the front to accommodate each terminal. An opening 16 is formed in the upper surface of the container chamber 12. Therefore, the central partition wall 14 is It is lower than the outer wall 17 by the thickness of the upper wall 15.

[0017] In the front part of the housing 10, a cover insertion hole 18 with an opening at the rear end is provided at the lower part of the upper wall 15. It is drilled. In this embodiment, the cover insertion hole 18 does not penetrate to the front end of the housing. Although the hole is closed, the hole may be closed to the front end, as shown in a modified example of FIG. At the bottom of the cover insertion hole 18, there is a cavity that constitutes the front part of the terminal accommodating chamber 12. 19, and the electrical contact portion 13a of the pressure contact terminal 13 is inserted into the cavity 19. be done.

[0018] The front end of the partition 20 that forms the lower surface of the cover insertion hole 18 and the upper surface of the cavity 19 is provided with a terminal locking portion 21 protruding from the top opening 16 of each terminal accommodating chamber 12. Ru. These terminal locking portions 21 have locking claw portions 21a that protrude downward at the rear of the flat plate portion. The locking claw portion 21a locks on the shoulder rear end 13b of the electrical contact portion 13a of the pressure contact terminal. I try to do that. In addition, the rear end 21b of the terminal locking portion 21 is chamfered to form a rounded shape. It is said that

[0019] The rear end of the lower surface 22 of each terminal storage chamber 12 is connected to the rear end of the left and right outer walls 17 and the partition wall 14. The rear edge 22a is chamfered to form a rounded shape. It is said that Furthermore, a cover locking protrusion 23 is provided on the upper surface of the rear end of the partition wall 1. Ru.

[0020] The cover 11 has a flat plate portion 25 having a wall thickness equal to that of the housing upper wall 15. A plurality of protrusions 26 are formed on the lower surface of the rear end, and these protrusions 26 are used to accommodate each terminal. The lower end of the protrusion is located at the rear end opening of the portion 12, and the lower end of the protrusion is located on the lower surface of the terminal accommodating chamber. It is set to be located rearward from the rear end at a predetermined distance L.

[0021] The front end of the flat plate portion 25 is inserted into the cover insertion hole 18 of the housing. , its front edge 25a is chamfered into a rounded shape. At the rear end of the flat plate portion 25 A locking groove 26 is provided to lock the locking protrusion 23 of the housing 10. . Insert the front part of the flat plate part 25 of the cover 11 into the bar insertion hole 18, and insert the rear end of the cover 11 into the bar insertion hole 18. In the state where the locking groove 28 is locked with the protrusion 23 and assembled to the housing 11, The left and right end surfaces 25b of the flat plate portion 25 are in contact with the inner surfaces of the left and right outer walls 17, and are in contact with the inner surfaces of the left and right outer walls 17. The top opening 16 of each terminal accommodating chamber 12 is closed by covering the cutout portion of the terminal accommodating chamber 12. It acts to push down the terminal locking portion 21.

[0022] The protrusion 26 includes a front part 26a that projects vertically from the flat plate part 25, A tapered portion 26b that slopes rearward from 26a, and a rearward end of the tapered portion 26b. The rear section 26c extends horizontally in the direction, and the electric wire is connected to the upper surface of the rear end of the rear section 26c. It consists of a guide part 26d.

[0023] As shown in FIG. 3, the front end surface of the front part 26a of the protrusion 26 is connected to a pressure contact terminal during assembly. The wire crimping portion 13c of No. 13 is set to be locked to the rear end shoulder portion 13d of the wire crimping portion 13c, and the front end surface is It is configured as a terminal locking surface 27. The front edge 26e of the rear part 26c is as shown in FIG. 2, at the rear with a predetermined distance L from the rear end 22a of the lower surface of the terminal accommodating chamber, and at the same level. It is set to be located on the surface. The above distance L is a dimension that can hold the electric wire W. There is.

[0024] The pressure contact terminals 13 connected to the electric wires W and housed in each of the terminal housing chambers 12 are as described above. As shown, the electric contact part 13a is built in the front part, and the pressure contact blade (not shown) is built in the middle part. The wire crimping portion 13c and the wire holding portion 13e at the rear end are respectively protruded from the base plate portion 13f. It consists of a structure formed on the body. The electric wire W is connected to the pressure contact terminal 13 in advance. It is installed in the terminal accommodation chamber 12 with the terminal accommodating chamber 12.

[0025] Next, a method of assembling the above-mentioned pressure welding connector will be explained. Pressure contact terminals each having a wire W connected to each terminal housing chamber 12 of the housing 10 13 from the rear end opening. At that time, the electrical contact portion 13 at the front of the pressure contact terminal 13 a is inserted by pushing up the terminal locking part 21, and when it is inserted to the specified position, electrical connection is made. The rear end 13b of the contact portion 13a is locked by the claw portion 21a of the terminal locking portion.

[0026] Next, the cover 11 is placed on the top surface of the housing 10, and the front part of the flat plate part 25 is inserted into the cover. Insert it into the entry hole 18 and lock the locking groove 28 at the rear end with the protrusion 23 of the housing 10. Attach.

[0027] In the above coupled state, the upper opening 16 of the terminal accommodating chamber 12 is connected to the flat plate of the cover 11. 25, and the terminal locking surface 27 on the front end of the protrusion 26 of the cover is closed. It is locked to the rear end portion 13d of the wire crimping portion of the pressure contact terminal 13. Therefore, the terminal housing chamber 12 The press-contact terminal 13 housed in is doubly locked on both the front and rear sides.

[0028] Further, the electric wire W crimped to the pressure contact terminal 13 is guided along the tapered portion 26b of the protrusion 26. The rear end 22a of the lower surface of the terminal accommodating chamber 12 and the front end edge of the rear protrusion 26c The wire guide 26d of the protrusion 26 is fixed between the wire guides 26e and 26e. It will be pulled out from the hole.

[0029]

[Effect of the idea]

As is clear from the above explanation, in the pressure welding connector according to the present invention, the cover The bar can have both a wire fixing function and a terminal locking function. In the above electric wire fixing function, the clamping force is applied to the electric wire at the front and back where the tensile force is applied. Because it is held from the top and bottom, the holding force is stronger compared to simply holding from the top and bottom. big. In addition, the terminal locking function uses a terminal locking part provided on the wall of the terminal storage chamber. Since double locking is possible, the pressure contact terminal will not move or move due to the tensile force acting on the wire. can be prevented from slipping out, and contact stability can be ensured.

[0030] Furthermore, since the cover is securely latched to the housing on both the front and back sides, the The force is large, and with this strong connection, you can assemble the wires securely and easily with the cover. In addition to being able to bend the wire, the bent wire can be held securely. Ru. Additionally, since the cover is slidably connected to the housing, assembly work is simplified. It is easy to use, and when assembling, the sliding surfaces of the housing and cover are mutually connected. The rounded edges prevent damage during assembly.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of the constituent members of the insulation displacement connector of the present invention.

FIG. 2 is a perspective view showing an enlarged projection of the cover of the component.

FIG. 3 is a sectional view of a pressure welding connector completed by assembling the above-mentioned constituent members.

FIG. 4 is a partial cross-sectional view of the housing of the component.

FIG. 5 is a partial cross-sectional view of the cover of the component.

FIG. 6 is a partially sectional view showing a modification of the present invention.

FIG. 7 is a schematic cross-sectional view of a conventional pressure welding connector.

[Figure 8] Same as above

[Explanation of symbols]

10 Housing 11 Cover 12 Terminal accommodation chamber 13 Pressure contact terminal 14 Partition wall 16 Opening 18 Cover insertion hole 21 Terminal locking part 22 Protrusion 25 Flat plate part 26 Protrusion 27 Terminal locking surface W Electric wire

Claims (1)

[Scope of utility model registration request] Claim 1: Terminal accommodating chambers with top openings are arranged side by side in the housing of the pressure welding connector, a terminal locking part is provided that protrudes from the front edge of the opening to the top surface of the opening, and a cover insertion hole is provided in the front part of the upper wall of the housing. On the other hand, a flat plate part whose front part is inserted into the cover insertion hole of the housing and closes the upper opening of the terminal accommodating chamber, and a protrusion protruding downward at a position corresponding to each terminal accommodating chamber at the rear end of the flat plate part. Provide a cover with
The protrusion of the cover has its lower end located behind the rear end of the lower surface of the terminal accommodating chamber so as to clamp the electric wire from the front and back directions, and the front end surface of the protrusion serves as a locking surface for the pressure contact terminal, so that the protrusion is located inside the terminal accommodating chamber. A pressure welding connector characterized in that it is configured to lock a pressure welding terminal housed in the.