JPH0421992B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a plug-in connector that is used to reliably and firmly connect and conduct electric wire terminals.

Conventionally, this type of connecting terminal has a structure that combines an insulator and a terminal, and if the insulator is damaged, the connecting terminal will disassemble and lose its conductive function, or if there is only one elastic piece, the electric wire It had many drawbacks, such as the tip of the terminal easily moving and lifting up, causing poor conduction.

Therefore, the present application is designed to eliminate the above-mentioned drawbacks by bending both the upper and lower ends of the board in the same direction.
One side of one end of the board is provided with a surface part in which a guide hole for inserting a plurality of electric wire terminals is formed, and a lead-out part is also provided on the other side of the board, Furthermore, the free end of the surface portion is provided with a support wall formed by bending it toward the bringing-out portion,
On the other hand, the lower part of the elastic plate is installed at the tip of the above-mentioned bringing-out part at a position facing the above-mentioned board at an appropriate distance, and furthermore, the upper free end of the above-mentioned elastic plate is connected to the board side. A diagonally formed upper elastic piece that is bent greatly and is closer to the substrate as viewed from the insertion direction of the wire end is provided in series, and a cut is provided on the lower side in the middle part of the elastic plate. is provided with a lower resilient piece cut and raised in an oblique manner and closer to the substrate as viewed from the direction of insertion of the wire end, and furthermore, each tip of the upper resilient piece and the lower resilient piece is formed. are respectively positioned in the insertion locus of the electric wire terminal inserted through the guide hole formed in the surface part, and the upper free end of the elastic plate is positioned in the upper elastic position by the electric wire terminal inserted through the guide hole. By configuring the elastic plate to be positioned on the substrate side of the support wall so that the upper part of the elastic plate can be supported by the support wall when the movable piece is pushed toward the side opposite to the substrate, electrical and Mechanical connections are highly reliable;
Furthermore, the present invention aims to provide a plug-in connector that is easy to plug in and easy to process.

Embodiments of the present application will be described below with reference to drawings. In FIGS. 1, 2, and 3, reference numeral 1 denotes an internal fitting, which is formed by bending a single metal plate. In this internal fitting 1, 1a is a substrate;
1b is a surface part, 1c is a take-out part, and 1d is an elastic plate. 2
are lower elastic pieces, respectively, in which the lower part of the folded part 6 formed above the elastic plate 1d is cut into a U-shape, and the remaining plate-shaped portion is bent and protrudes toward the space of the inner fitting 1. It is positioned so that the wire end 17 can be pressed against the wire along the trajectory of the wire inserted through the guide hole 7, and the tip acts to prevent the wire end 17 from coming off, and its elastic action prevents repeated reuse. enable.

3 is a space created by providing the lower elastic piece 2; Reference numeral 4 designates an upper elastic piece formed by bending the upper part of the elastic plate 1d, so that the upper elastic piece 4 can be press-contacted along the locus of the electric wire end 17 inserted through the guide hole 7 diagonally downward in the space of the inner fitting 1. The distal end of the wire prevents the wire end 17 from coming off, and its elasticity allows repeated reuse. Reference numeral 5 denotes a support wall, which is formed by forming a series of upper and lower resilient pieces 2, 4 in advance and then bending a protruding portion of the surface portion 1b. 6 is a folded part, and the upper elastic piece 4
It is bent to provide a fulcrum and serves as a fulcrum for the upper elastic piece 4. Reference numeral 7 designates guide holes, which are formed before the surface portion 1b is bent, and a plurality of guide holes are provided in a line with necessary spacing. Reference numeral 8 denotes a cutting line, which is cut from the folded portion 6 to the tip of each upper elastic piece 4 so that each upper elastic piece 4 can operate independently. 9 is an inner wall, which is inside the substrate 1a. Reference numeral 10 denotes a guide stage, which pushes open the narrow part at the back of the mouth opening 12 of the insulating cap 11 and guides the take-out part 1.
When inserting the internal fitting 1 at the tip of the support wall 5 first, guide the wall of the opening 12 immediately before the tip of the support wall 5 so that the tip of the support wall 5 can easily pass through the opening 12 of the insulating cap 11. At stage 10, insert while pushing open in advance. Reference numeral 11 denotes an insulating cap, which insulates and covers the inner fitting 1. Reference numeral 12 denotes an opening for guiding the insertion of the inner fitting 1 and the insertion of the electric wire terminal 17. Reference numeral 13 denotes an internal hole, which houses the internal fitting 1 therein. Reference numerals 14 and 14 are stop steps, which form steps to prevent the inner fitting 1 once inserted from coming out again. 15 is an electric waveguide plate, which is connected to the inner wall 9 and each top;
It is inserted into the space between the lower elastic pieces 2 and 4 and integrated with the inner fitting 1. Reference numeral 16 denotes a groove, which is provided at a common position with each guide hole 7 to guide the wire terminal 17 and increase the contact area along the wire terminal 17 having a circular cross section to increase the conductive effect and prevent the wire terminal 17 from moving from side to side. .

Upper and lower elastic pieces 2,
4, and if these two elastic pieces are designed to operate independently, even if one elastic piece loses its pressure contact function due to external pressure from another, the other elastic piece will remain in pressure contact. Sufficient conductivity is maintained due to the force and the prevention function of the tip of the elastic piece, and the elastic pieces installed at the top and bottom have a natural structure, so the elastic width is large and it feels soft, so it is thick. Even when the wire terminal is inserted, it feels light, and even when a thin wire terminal is used, it has a sufficient press-fitting and retaining function, and the wire terminals of thick and thin wires can be alternately reused without limit.

As described above, in the present invention, when a plurality of electric wire terminals 17 are to be connected to each other, when they are inserted through the guide hole 7, the tip of the upper elastic piece 4 and the lower elastic piece 2 are connected to each electric wire terminal. The ends of the wires can be pressure-contacted at two places, the top and bottom, respectively, to achieve continuity between the ends of the wires.
This has the effect of providing high connection reliability.

Moreover, in the above case, when the inserted wire end pushes the tip of the upper elastic piece 4 or the tip of the lower elastic piece 2 toward the opposite side, the folded part 6 of the base of the upper elastic piece 4 Since the supporting wall 5 supports the elastic force of the upper elastic piece 4, it is possible to directly apply the elastic force of the upper elastic piece 4 to the tip of the elastic piece to ensure that the tip comes into pressure contact with the wire end 17, and the elastic force of the upper elastic piece 4 can be applied to the tip of the elastic piece without fail. However, since the upper folded portion 6 is supported by the support wall 5 as described above and the lower end is integrally connected to the protruding portion 1c, the elastic force of the cut-and-raised lower elastic piece 2 itself is The tip can be brought into firm pressure contact with the wire terminal 17 by fully exerting its effect, and the reliability of the electrical connection can be made extremely high at two locations.

Furthermore, even though the device has the above-mentioned features, since its structure can be formed by bending a single sheet metal, it is easy to manufacture and can be provided at low cost.

[Brief explanation of drawings]

The drawings show an embodiment of the present application, and FIG. 1 is a partially sectional view, FIGS. 2 and 3 are perspective views of the inner fitting, and FIG.
The figure is a perspective view of a conductive waveguide plate. 1: Inner fitting, 1a: Substrate, 1b: Surface portion, 1
c: Take-out part, 1d: Elastic plate, 2: Lower elastic piece,
4: Upper elastic piece, 5: Support wall, 6: Folded part,
7: Guide hole, 8: Cutting line, 9: Inner wall, 17: Electric wire terminal.

Claims (1)

[Claims] 1 Bend both the top and bottom ends of the board in the same direction,
One side of one end of the board is provided with a surface part in which a guide hole for inserting a plurality of electric wire terminals is formed, and a lead-out part is also provided on the other side of the board, Furthermore, the free end of the surface portion is provided with a support wall formed by bending it toward the bringing-out portion,
On the other hand, the lower part of the elastic plate is installed at the tip of the above-mentioned bringing-out part at a position facing the above-mentioned board at an appropriate distance, and furthermore, the upper free end of the above-mentioned elastic plate is connected to the board side. A diagonally formed upper elastic piece that is bent greatly and is closer to the substrate as viewed from the insertion direction of the wire end is provided in series, and a cut is provided on the lower side in the middle part of the elastic plate. is provided with a lower resilient piece cut and raised in an oblique manner and closer to the substrate as viewed from the direction of insertion of the wire end, and furthermore, each tip of the upper resilient piece and the lower resilient piece is formed. are respectively positioned in the insertion locus of the electric wire terminal inserted through the guide hole formed in the surface part, and the upper free end of the elastic plate is positioned in the upper elastic position by the electric wire terminal inserted through the guide hole. 1. A plug-in connector characterized in that the upper part of the elastic plate is located on the substrate side of the support wall so that it can be supported by the support wall when the movable piece is pushed toward the opposite side of the substrate.