Rigid structure for reducing insertion force

Abstract

The invention discloses a rigid structure for reducing insertion force, and belongs to the technical field of electronic components, the rigid structure comprises a terminal and an insertion sheet, the front end of the terminal is used for matching with the insertion sheet, the rear end of the terminal is used for connecting with a wire, two side edges of the front end of the terminal are provided with pressing sheets curled upwards and inwards, one end of each pressing sheet and the front end of the terminal are integrally formed, and the other end of each pressing sheet is connected with the insertion sheet. The other end of the pressing piece is a bent end, a gap is formed between the bent end of the pressing piece and the inner side face of the front end of the terminal, the inserting piece is matched with the terminal by being inserted into the gap, an arc cut edge is arranged in the middle of the side wall of the bent end of the pressing piece, a protruding block is arranged on the inner side face of the front end of the terminal, and the protruding block is located below the arc cut edge. According to the arc cut edge provided by the invention, enough clamping force and pulling-out force can be ensured in advance that the insertion force becomes small, the stability of the terminal and the insertion piece is improved, the abrasion of the insertion piece and the terminal is reduced, and the service life of the terminal is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of electronic components, and in particular to a rigid structure for reducing insertion force. Background Art

[0002] With the rapid development of the electronics industry and the expansion of the market, the electrical system has become increasingly powerful, and various electrical appliances with different characteristics have emerged, which have higher and higher requirements for the electrical performance of the wiring harness. The connection terminal plays an extremely important role in the wiring harness and the entire electrical system. If the wiring harness is compared to the nervous system of the entire device, then the terminal is the connection point of the nerve system, so the quality of the wiring harness terminal is directly related to whether the wiring harness can be used normally.

[0003] When the connector is connected, the plug is inserted into the terminal, and the terminal wraps the plug in the terminal opening, thereby achieving electrical connection of the connector and ensuring the conductivity of the connector. If the terminal wants stable contact performance, it is necessary to minimize the opening gap that matches the plug. When the opening gap is reduced, the problem of excessive insertion force will be faced. During the long-term plug-in and pull-out process, due to the large insertion force, the contact part between the plug and the terminal will be highly worn, which will shorten the service life of the product.

[0004] Therefore, how to provide a structure that can solve the problem of high insertion force while ensuring the contact performance between the terminal and the plug remains unchanged is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] To this end, the present invention provides a rigid structure for reducing the insertion force, so as to solve the problem of high insertion force caused by a small opening gap between the insert piece and the terminal in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A rigid structure for reducing insertion force comprises a terminal and an inserting piece, wherein the front end of the terminal is used to cooperate with the inserting piece, and the rear end of the terminal is used to connect with the wire, and the edges on both sides of the front end of the terminal are provided with pressing pieces that curl upward and inward, one end of the pressing piece is integrally formed with the front end of the terminal, and the other end of the pressing piece is a bent end, and a gap is formed between the bent end of the pressing piece and the inner side surface of the front end of the terminal, and the inserting piece cooperates with the terminal by being inserted into the gap, and an arc cut edge is provided on the middle part of the side wall of the bent end of the pressing piece, and a protruding block is provided on the inner side surface of the front end of the terminal, and the protruding block is located below the arc cut edge.

[0008] Furthermore, a protrusion structure is provided on the inner side surface of the front end of the terminal, and the protrusion structure includes a first protrusion piece, a second protrusion piece and a third protrusion piece. The first protrusion piece, the second protrusion piece and the third protrusion piece are provided on the inner side surface of the front end of the terminal in sequence from the outside to the inside. The heights of the first protrusion piece, the second protrusion piece and the third protrusion piece are consistent, and the protrusion block is provided on the second protrusion piece.

[0009] Furthermore, a slot is provided on the plug-in piece, and when the plug-in piece is fully inserted into the terminal, the protruding block on the second protruding piece cooperates with the slot on the plug-in piece.

[0010] Furthermore, the plug-in piece includes at least a first insertion state, and in the first insertion state, the plug-in piece is inserted into the gap of the terminal, the plug-in piece is located on the first protruding piece, the upper end surface of the plug-in piece abuts against the bent end of the pressing piece, and the lower end surface of the plug-in piece abuts against the first protruding piece.

[0011] Furthermore, the plug-in also includes a second insertion state, and in the second insertion state, the plug-in is inserted into the gap of the terminal, the plug-in is located on the first protrusion piece and the second protrusion piece, part of the upper end surface of the plug-in is against the bent end of the pressing piece, part of the upper end surface of the plug-in is located below the arc cut edge of the pressing piece, and the lower end surface of the plug-in is against the protrusion blocks on the first protrusion piece and the second protrusion piece.

[0012] Furthermore, the plug-in also includes a third insertion state, and in the third insertion state, the plug-in is inserted into the gap of the terminal, the plug-in is located on the first protrusion piece, the second protrusion piece and the third protrusion piece, part of the upper end surface of the plug-in is against the bent end of the pressing piece, part of the upper end surface of the plug-in is located below the arc cut edge of the pressing piece, and the lower end surface of the plug-in is against the first protrusion piece, the second protrusion piece and the third protrusion piece.

[0013] Furthermore, the size of the gap opening between the bent end of the pressing piece and the first protruding piece matches the height size of the inserting piece.

[0014] Furthermore, the contact surface between the protruding block and the plug-in piece is an inclined surface, and the inclined surface is inclined upward along the insertion direction of the plug-in piece.

[0015] The present invention has the following advantages:

[0016] The present application provides a rigid structure for reducing insertion force, including a terminal and a plug-in piece, wherein the front end of the terminal is used to cooperate with the plug-in piece, and the rear end of the terminal is used to connect with the wire, and pressure pieces curled upward and inward are provided on both side edges of the front end of the terminal, one end of the pressure piece is integrally formed with the front end of the terminal, and the other end of the pressure piece is a bent end, and a gap is formed between the bent end of the pressure piece and the inner side surface of the front end of the terminal, and the plug-in piece cooperates with the terminal by being inserted into the gap, and an arc cut edge is provided on the middle part of the side wall of the bent end of the pressure piece, and a protruding block is provided on the inner side surface of the front end of the terminal, and the protruding block is located below the arc cut edge.

[0017] The present application sets an arc cutting edge on the curved end of the pressing piece. When the plug is inserted into the terminal, when the plug reaches the position of the raised block on the terminal, the plug tilts upward, and the arc cutting edge on the pressing piece provides space for the plug, so that the insertion force of the plug into the terminal is reduced. If there is no arc cutting edge on the pressing piece, when the plug is inserted into the terminal and rests on the raised block, the plug will directly press against the curved end of the pressing piece, and a lot of force is required to push the terminal in. The arc cutting edge provided by the present application can ensure sufficient clamping force and extraction force in advance when the insertion force is reduced, improve the stability of the terminal and the plug, reduce the wear of the plug and the terminal, and increase the service life of the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0020] Figure 1 A schematic diagram of the connection structure of the terminal and the plug provided by the present invention;

[0021] Figure 2 A schematic diagram of the exploded structure of the terminal and the plug provided by the present invention;

[0022] Figure 3 A cross-sectional view of a terminal provided by the present invention;

[0023] Figure 4A diagram of a first insertion state of the insert provided by the present invention;

[0024] Figure 5 A diagram of a second insertion state of the insert provided by the present invention;

[0025] Figure 6 This is a diagram of the third insertion state of the insert provided by the present invention.

[0026] In the figure:

[0027] 1. Terminal; 2. Insert; 3. Pressing piece; 4. Arc cutting; 5. Raised block; 6. Raised structure; 601. First raised piece; 602. Second raised piece; 603. Third raised piece; 7. Grooving. DETAILED DESCRIPTION

[0028] The following is a description of the implementation of the present invention by specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] A rigid structure that reduces insertion forces, such as Figure 1-3 As shown, it includes a terminal 1 and a plug-in piece 2, the front end of the terminal 1 is used to cooperate with the plug-in piece 2, and the rear end of the terminal 1 is used to connect with the wire. The edges of both sides of the front end of the terminal 1 are provided with pressing pieces 3 that are curled upward and inward. One end of the pressing piece 3 is integrally formed with the front end of the terminal 1, and the other end of the pressing piece 3 is a bent end. A gap is formed between the bent end of the pressing piece 3 and the inner side surface of the front end of the terminal 1. The plug-in piece 2 cooperates with the terminal 1 by being inserted into the gap. An arc cutting edge 4 is provided on the middle part of the side wall of the bent end of the pressing piece 3, and a protruding block 5 is provided on the inner side surface of the front end of the terminal 1, and the protruding block 5 is located below the arc cutting edge 4.

[0030] When the plug 2 is inserted into the terminal 1, the plug 2 is inserted into the terminal 1 along the opening gap between the terminal 1 and the plug 2. In order to clamp the plug 2 between the terminal 1 and the pressing piece 3, the size of the gap opening between the bent end of the pressing piece 3 and the first protruding piece 601 is set to match the height size of the plug 2.

[0031] The contact surface of the protruding block 5 and the plug 2 is an inclined surface, and the inclined surface is inclined upward along the insertion direction of the plug 2. When the plug 2 is inserted into the terminal 1, when the plug 2 reaches the position of the protruding block 5 on the terminal 1, the plug 2 is continuously pushed, and the plug 2 is inserted into the terminal 1 along the inclined surface of the protruding block 5, and the plug 2 is tilted upward along the inclined surface of the protruding block 5. A slot 7 is provided on the plug 2, and until the plug 2 is fully inserted into the terminal 1, the protruding block 5 on the second protruding piece 602 cooperates with the slot 7 on the plug 2. Through the cooperation of the protruding block 5 and the slot 7, the plug 2 can be fixed on the terminal 1, so that the plug 2 and the terminal 1 establish a stable connection relationship, and the plug 2 is prevented from falling off the terminal 1 and affecting the conductivity of the terminal 1.

[0032] The present application sets an arc cutting edge 4 on the curved end of the pressing piece 3. When the plug 2 is inserted into the terminal 1, when the plug 2 reaches the position of the raised block 5 on the terminal 1, the plug 2 tilts upward, and the arc cutting edge 4 on the pressing piece 3 provides space for the plug 2, so that the insertion force of the plug 2 into the terminal 1 is reduced. If there is no arc cutting edge 4 on the pressing piece 3, when the plug 2 is inserted into the terminal 1 and rests on the raised block 5, the plug 2 will directly press against the curved end of the pressing piece 3, and a great force is required to push the plug 2 in. The arc cutting edge 4 provided by the present application can ensure sufficient clamping force and extraction force in advance when the insertion force is reduced, improve the stability of the terminal 1 and the plug 2, reduce the wear of the plug 2 and the terminal 1, and increase the service life of the terminal 1.

[0033] like Figure 3 As shown, a protrusion structure 6 is provided on the inner side surface of the front end of the terminal 1, and the protrusion structure 6 includes a first protrusion piece 601, a second protrusion piece 602 and a third protrusion piece 603. The first protrusion piece 601, the second protrusion piece 602 and the third protrusion piece 603 are provided on the inner side surface of the front end of the terminal 1 from the outside to the inside. The heights of the first protrusion piece 601, the second protrusion piece 602 and the third protrusion piece 603 are consistent, and a protrusion block 5 is provided on the second protrusion piece 602.

[0034] During specific use, when the plug 2 is gradually inserted into the terminal 1, the lower end surface of the plug 2 successively abuts against the first protrusion piece 601, the second protrusion piece 602 and the third protrusion piece 603, and the upper end surface of the plug 2 abuts against the pressing piece 3, so that the plug 2 is clamped in the terminal 1, establishing a connection relationship between the plug 2 and the terminal 1.

[0035] The insert 2 includes at least a first insertion state, and in the first insertion state, Figure 4 As shown, the front end of the plug 2 is just inserted into the gap between the terminal 1 and the pressing piece 3, and at this time, the plug 2 is squeezed by the pressing piece 3 and the terminal 1. The plug 2 is located on the first protruding piece 601, the upper end surface of the plug 2 is against the bent end of the pressing piece 3, the lower end surface of the plug 2 is against the first protruding piece 601, and the front end of the plug 2 is squeezed in the gap between the first protruding piece 601 and the bent end of the pressing piece 3.

[0036] The insert 2 also includes a second insertion state, and in the second insertion state, as Figure 5 As shown, based on the first insertion state, the plug 2 is continuously pushed into the terminal 1, and the front end and the middle end of the plug 2 are inserted into the gap between the terminal 1 and the pressing piece 3. At this time, the plug 2 is squeezed by the pressing piece 3 and the terminal 1. The plug 2 is located on the first protruding piece 601 and the second protruding piece 602, and part of the upper end surface of the plug 2 is against the curved end of the pressing piece 3, and part of the upper end surface of the plug 2 is located below the arc cut edge 4 of the pressing piece 3, and the lower end surface of the plug 2 is against the protruding block 5 on the first protruding piece 601 and the second protruding piece 602.

[0037] The front end of the plug 2 is located on the second protruding piece 602, and the middle end of the plug 2 is located on the first protruding piece 601. Because the arc cutting edge 4 gives way, the front end of the plug 2 is not squeezed by the pressing piece 3, and is pressed against the protruding block 5 on the second protruding piece 602. The middle end of the plug 2 is squeezed in the gap between the first protruding piece 601 and the bent end of the pressing piece 3. And because the arc cutting edge 4 gives way, the pushing force of the plug 2 into the terminal 1 is also reduced accordingly.

[0038] The insert 2 also includes a third insertion state, and in the third insertion state, as Figure 6 As shown, based on the second insertion state, the plug 2 is continuously pushed into the terminal 1, and the front end, middle end and rear end of the plug 2 are inserted into the gap between the terminal 1 and the pressing piece 3. At this time, the plug 2 is squeezed by the pressing piece 3 and the terminal 1. The plug 2 is located on the first protruding piece 601, the second protruding piece 602 and the third protruding piece 603, part of the upper end surface of the plug 2 is against the curved end of the pressing piece 3, part of the upper end surface of the plug 2 is located below the arc cut edge 4 of the pressing piece 3, and the lower end surface of the plug 2 is against the first protruding piece 601, the second protruding piece 602 and the third protruding piece 603.

[0039] The front end of the insert 2 is located on the third protruding piece 603, the middle end of the insert 2 is located on the second protruding piece 602, and the rear end of the insert 2 is located on the first protruding piece 601. The front end of the insert 2 is squeezed in the gap between the third protruding piece 603 and the curved end of the pressing piece 3. The middle end of the insert 2 is not squeezed by the pressing piece 3 because the arc cutting edge 4 gives way, and the protruding block 5 on the second protruding piece 602 is clamped in the slot 7 on the middle end of the insert 2. The rear end of the insert 2 is squeezed in the gap between the first protruding piece 601 and the curved end of the pressing piece 3.

[0040] In order to verify that the terminal with the arc cut edge 4 provided by the present application has a smaller insertion force than the terminal without the arc cut edge 4, the following test was conducted. As shown in Figure 1, the gap data and insertion force data detected when the terminal 1 with the arc cut edge 4 is matched with the plug 2, and as shown in Figure 2, the gap data and insertion force data detected when the terminal 1 without the arc cut edge 4 is matched with the plug 2.

[0041] Table 1

[0042]

[0043]

[0044] Table 2

[0045]

[0046] From the test results, under the same gap, the insertion force with the arc cut edge 4 is smaller than the insertion force without the arc cut edge 4, and the changes in the holding force and the gap are consistent.

[0047] Although the present invention has been described in detail above by general description and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the present invention. Therefore, these modifications or improvements made without departing from the spirit of the present invention all belong to the scope of protection claimed by the present invention.

Claims

1. A rigid structure for reducing insertion force, characterized in that: The invention comprises a terminal (1) and an inserting piece (2), wherein the front end of the terminal (1) is used to cooperate with the inserting piece (2), and the rear end of the terminal (1) is used to connect with a wire. The edges of both sides of the front end of the terminal (1) are provided with pressing pieces (3) curled upward and inward, one end of the pressing piece (3) is integrally formed with the front end of the terminal (1), and the other end of the pressing piece (3) is a bent end. A gap is formed between the bent end of the pressing piece (3) and the inner side surface of the front end of the terminal (1), and the inserting piece (2) cooperates with the terminal (1) by being inserted into the gap. A circular arc cutting edge (4) is provided on the middle part of the side wall of the bent end of the pressing piece (3), and a protruding block (5) is provided on the inner side surface of the front end of the terminal (1), and the protruding block (5) is located below the circular arc cutting edge (4).

2. The rigid structure for reducing insertion force according to claim 1, characterized in that: A protruding structure (6) is provided on the inner side surface of the front end of the terminal (1), and the protruding structure (6) comprises a first protruding piece (601), a second protruding piece (602) and a third protruding piece (603). The first protruding piece (601), the second protruding piece (602) and the third protruding piece (603) are provided on the inner side surface of the front end of the terminal (1) in sequence from the outside to the inside. The first protruding piece (601), the second protruding piece (602) and the third protruding piece (603) are of the same height, and the second protruding piece (602) is provided with the protruding block (5).

3. The rigid structure for reducing insertion force as claimed in claim 2, characterized in that: The inserting piece (2) is provided with a slot (7), and when the inserting piece (2) is fully inserted into the terminal (1), the protruding block (5) on the second protruding piece (602) cooperates with the slot (7) on the inserting piece (2).

4. The rigid structure for reducing insertion force as claimed in claim 2, characterized in that: The plug (2) includes at least a first insertion state, and in the first insertion state, the plug (2) is inserted into the gap of the terminal (1), the plug (2) is located on the first protruding piece (601), the upper end surface of the plug (2) abuts against the bent end of the pressing piece (3), and the lower end surface of the plug (2) abuts against the first protruding piece (601).

5. The rigid structure for reducing insertion force as claimed in claim 2, characterized in that: The plug (2) also includes a second insertion state, and in the second insertion state, the plug (2) is inserted into the gap of the terminal (1), the plug (2) is located on the first protruding piece (601) and the second protruding piece (602), part of the upper end surface of the plug (2) abuts against the bent end of the pressing piece (3), part of the upper end surface of the plug (2) is located below the arc cut edge (4) of the pressing piece (3), and the lower end surface of the plug (2) abuts against the protruding blocks (5) on the first protruding piece (601) and the second protruding piece (602).

6. The rigid structure for reducing insertion force as claimed in claim 2, characterized in that: The plug (2) also includes a third insertion state, and in the third insertion state, the plug (2) is inserted into the gap of the terminal (1), the plug (2) is located on the first protruding piece (601), the second protruding piece (602) and the third protruding piece (603), part of the upper end surface of the plug (2) abuts against the bent end of the pressing piece (3), part of the upper end surface of the plug (2) is located below the arc cut edge (4) of the pressing piece (3), and the lower end surface of the plug (2) abuts against the first protruding piece (601), the second protruding piece (602) and the third protruding piece (603).

7. The rigid structure for reducing insertion force as claimed in claim 2, characterized in that: The size of the gap opening between the bent end of the pressing piece (3) and the first protruding piece (601) matches the height size of the inserting piece (2).

8. The rigid structure for reducing insertion force as claimed in claim 2, characterized in that: The contact surface of the protruding block (5) and the inserting piece (2) is an inclined surface, and the inclined surface is inclined upward along the insertion direction of the inserting piece (2).

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