CN211829257U

CN211829257U - Solderless contact pin

Info

Publication number: CN211829257U
Application number: CN202020661115.6U
Authority: CN
Inventors: 刘苏南; 张燎; 施陈辉
Original assignee: Nanjing Hawkeye Electronic Technology Co Ltd
Current assignee: Nanjing Hawkeye Electronic Technology Co Ltd
Priority date: 2020-04-26
Filing date: 2020-04-26
Publication date: 2020-10-30
Anticipated expiration: 2030-04-26

Abstract

The utility model discloses a solderless contact pin, which is provided with a pin body and a pin, wherein the pin is used for being connected with a circuit board hole and comprises an inserting end and a connecting end, the inserting end is arranged at one end of the pin, which is far away from the pin body, and the inserting end is provided with a tip end; the connecting end is arranged between the insertion end and the needle body, and the peripheral surface of the connecting end is in interference fit with the circuit board hole; and the connecting end is an elastic structural part.

Description

Solderless contact pin

Technical Field

The utility model relates to a circuit board contact pin field especially relates to a solderless contact pin.

Background

In the prior art, the connection technology of pins of contact pins and a circuit board (PCB) is generally connected by soldering tin, and the pins cannot be detached after connection, if other electronic components need to be replaced, the soldering tin needs to be melted, so that the detachment is troublesome, and other elements are easily damaged; and soldering tin is connected for a long time, and is slow, and the blind welding condition may appear through soldering tin welding product, causes the circuit to be unable to lead to the fact, and soldering tin gets the cost also higher in addition, and a large amount of uses can cause manufacturing cost's improvement, and along with the bulk production of company's product, traditional technology through soldering tin connection has can't satisfy current production matching demand.

Therefore, in order to improve the production efficiency and reduce the production cost, it is necessary to provide a new solderless pin to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a solderless contact pin, inserting the stitch circuit board hole in-process, utilize the link to realize interference fit for elastic construction spare and make link and circuit board hole to it is troublesome with the circuit board dismouting to solve the stitch, realizes the problem that the circuit switched on.

In order to achieve the purpose, the utility model adopts the following technical scheme.

A solderless contact pin is provided with a pin body and a pin, wherein the pin is used for being connected with a circuit board hole and comprises an insertion end and a connection end, the insertion end is arranged at one end of the pin, which is far away from the pin body, and the insertion end is provided with a pointed end; the connecting end is arranged between the insertion end and the needle body, and the peripheral surface of the connecting end is in interference fit with the circuit board hole; and the connecting end is an elastic structural part.

Further, the stitch still includes a spacing boss, spacing boss set up in the stitch is close to the one end of needle body, wherein, along in the radial direction of stitch, the link the minimum external dimension of spacing boss is greater than the minimum internal diameter size in circuit board hole.

Further, the stitch still includes an adjustment recess, the adjustment recess set up in spacing boss deviates from the one end of needle body, wherein, along the radial direction of stitch, insert the end, the biggest external dimension of adjustment recess is less than or equal to the minimum internal diameter size in circuit board hole. Further, the insertion end, the connecting end, the groove, the limiting boss and the needle body are of an integrated structure.

Further, at least one first through hole is arranged on the connecting end.

Further, the outer peripheral surface of the connecting end is a convex arc surface, or the cross-sectional pattern of the connecting end is an arc shape along the length direction of the stitch.

Further, the sectional shape of the tip along the length direction of the pin is any one of a figure of eight, a cone and an arc.

Further, the outer surface of the adjusting groove is a concave curved surface.

Further, the one end that the needle body deviates from the stitch still sets up a needle shoulder, the needle shoulder with needle body formula as an organic whole is connected.

Further, a second through hole is formed in the needle shoulder.

The utility model relates to a positive effect of solderless contact pin is:

(1) the guide effect that the end was inserted in the utilization runs through and inserts the circuit plate hole, utilizes the link to be elastic construction spare and makes interference fit is realized with the circuit plate hole to the end that inserts that utilizes regulation recess adjustment stitch inserts the downthehole degree of depth of circuit board, and utilizes spacing boss restriction stitch to insert the end that inserts the degree of depth that inserts the circuit plate hole, thereby it is troublesome with the circuit board dismouting to solve stitch, realizes the problem that the electrical property switched on.

(2) Simple structure, and convenient installation and disassembly.

(3) The automobile seat has the advantages of simple manufacturing process, low production cost, high universality, reliability and practicability, can better meet the installation of the existing automobile type, and avoids complex design structure and manufacturing process.

Drawings

The best mode of the invention is described in detail below with reference to the accompanying drawings:

fig. 1 is a schematic structural diagram of a solderless contact pin according to an embodiment of the present invention.

Fig. 2 is a schematic view of the assembly of the solderless pin and the circuit board according to the embodiment of the present invention.

The reference numerals in the figures are respectively:

1. a needle body; 2. A stitch;

3. an insertion end; 31. A tip;

32. a first surface; 4. A connecting end;

5. a limiting end; 6. Adjusting the groove;

7. a limiting boss; 8. A first through hole;

9. an outer peripheral surface; 10. A needle shoulder;

11. a second through hole; 100. A circuit board;

101. the circuit board holes.

Detailed Description

The following description of the exemplary embodiment of the solderless pin of the present invention is provided in conjunction with the drawings, but it should be understood that the present invention is not limited to the following exemplary embodiment.

See fig. 1 and 2. As shown in FIG. 1, a solderless contact pin has a pin body 1, the pin body 1 includes a pin 2. The stitch 2 comprises an insertion end 3, a connection end 4 and a limit end 5. The limiting end 5 comprises an adjusting groove 6 and a limiting boss 7. As shown in fig. 2, in the present invention, the solderless contact pin is used for connecting with a circuit board (PCB) 100 and electrically connecting. Specifically, the pin 2 is inserted into the circuit board hole 101 of the circuit board 100 to achieve electrical conduction.

Referring to fig. 1, in the present invention, the needle body 1 is a solid metal structure. The needle body 1 is an L-shaped structural part. As shown in fig. 1, the stitch 2 is disposed in the length extending direction of the short side structure of the "L" shape of the needle body 1. The needle feet 2 are fixedly connected to the needle body 1. The needle foot 2 and the needle body 1 are of an integrated structure. And, needle body 1 deviates from the one end of stitch 2 still sets up a needle shoulder 10, needle shoulder 10 with needle body 1 formula as an organic whole is connected, and be provided with second through-hole 11 on the needle shoulder 10, second through-hole 11 can be the circular port, the circular port is convenient for the mould location of moulding plastics, keeps this application the position of solderless contact pin, but is not limited to this.

As shown in fig. 1 and fig. 2, the insertion end 3, the connection end 4 and the limiting end 5 of the pin 2 are of an integrated structure, so that the solderless contact pin is simple in structure and easy to install and disassemble.

As shown in fig. 1, the insertion end 3 is arranged at an end of the needle foot 2 facing away from the needle body 1, and the insertion end 3 has a tip 31 and a first surface 32. The tip 31 is arranged at one end of the stitch 2 departing from the needle body 1, and the extending direction of the tip 31 is along the length extending direction of the L-shaped short side structure of the needle body 1. In the radial direction along the pin 2, the maximum outer dimension of the insertion end 3 is smaller than or equal to the minimum inner diameter dimension of the circuit board hole 101 of the circuit board 100. The cross-sectional profile of the tip 31 along the length of the stitch 2 is splayed or curved, i.e. the outer surface of the first surface 32 is a conical or curved surface.

In this embodiment, as a preferred embodiment, as shown in fig. 1 and 2, the cross-sectional pattern of the first surface 32 of the insertion end 3 is preferably a figure eight, that is, the outer peripheral surface of the first surface 32 is a tapered surface, and the tapered surface of the first surface 32 is a surface formed by a plurality of planes and inclined surfaces. The tip 31 and the first surface 32 of the insertion end 3 serve as a guide, so that the tip 31 of the insertion end 3 is conveniently inserted into the circuit board hole 101 of the circuit board 100.

Continuing to refer to fig. 1 and 2, the limiting end 5 includes a limiting boss 7 and an adjusting groove 6. Spacing boss 7 fixed connection in stitch 2 is close to the one end of needle body 1, adjust recess 6 fixed connection in spacing boss 7 deviates from the one end of needle body 1, and the connected mode is the integral type and connects. The two ends of the connecting end 4 are respectively connected to the inserting end 3 and the adjusting groove 6, and the peripheral surface 9 of the connecting end 4 is connected with the circuit board hole 101 of the circuit board 100 in a matching manner.

In this embodiment, the surface of the outer peripheral surface 9 of the connection end 4 is in surface contact with the inner hole wall of the circuit board hole 101, and the surface contact is in interference fit, so as to realize the positioning of the pin 2 in the radial direction.

With reference to fig. 1 and fig. 2, at least one first through hole 8 is disposed on the connection end 4, the connection end 4 is an elastic structural member, and the connection end 4 is in interference fit with the circuit board hole 101. Specifically, the outer peripheral surface 9 of the connecting end 4 is a convex arc surface. In other words, the cross-sectional profile of the connecting end 4 is arcuate along the length of the stitch 2. In the radial direction along the pin 2, the minimum outer dimension of the connection end 4 is greater than the minimum inner diameter dimension of the circuit board hole 101, so that the interference fit of the connection end 4 and the circuit board hole 101 can be realized. First through-hole 8 is the preferred oval through-hole, just the major diameter of the oval through-hole of first through-hole 8 with the length extending direction of stitch 2 is unanimous, thereby link 4 has better deformability, and then makes stitch 2 inserts better in circuit board hole 101.

Specifically, in this application embodiment, through stitch 2 insert under 3's guiding action, further will link 4 inserts in circuit board hole 101 and increase the degree of depth, utilize link 4's elasticity nature makes the surface of peripheral surface 9 with circuit board hole 101's inner hole wall carries out closely face contact or closely sliding connection, the cooperation mode of face contact is interference fit promptly, link 4 with circuit board hole 101's cooperation degree of depth has certain regulation space.

It should be noted that the design of the through hole 8 of the connecting end 4 and the material, shape, size and the like of the outer peripheral surface 9 is to facilitate the insertion or extraction of the connecting end 4 into or out of the circuit board hole 101 on the basis of interference fit, so that the connection between the pins 2 and the circuit board 100 is convenient to disassemble, the rework operation can be realized, and the advantages of improving efficiency, reducing cost and the like are achieved.

Referring to fig. 1 and 2, in the present embodiment, the outer surface of the adjusting groove is a concave curved surface formed by a plurality of curves. The maximum outer dimension of the adjustment groove 6 in the radial direction along the pin 2 does not exceed the minimum inner diameter dimension of the circuit board hole 101. The adjusting groove 6 is used for adjusting the depth of the connecting end 4 inserted into the circuit board cavity 101, wherein the pins 2 are inserted into the connecting end 4, and the adjusting groove 6 plays a transition role. Spacing boss 7's minimum external dimension is greater than circuit board hole 101's minimum internal diameter size, spacing boss 7 is used for inserting in circuit board space 101 stitch 2 carries on spacingly, spacing boss 7 is used for the restriction stitch 2 link 4 with circuit board hole 101's cooperation degree of depth, it is right to realize stitch 2 link 4's axial is spacing, thereby has greatly improved this application solderless contact pin with joint strength between the circuit board 100 has also improved the stability of equipment work. Meanwhile, the connection strength between the solderless contact pin and the circuit board 100 is improved, so that the manufacturing process requirements of the circuit board hole 101 can be reduced, the manufacturing difficulty of the circuit board 100 is further reduced, and the production cost is reduced.

The utility model discloses solderless contact pin's application method does:

when the pin 2 of the needle body 1 is inserted into or pulled out of the circuit board hole 101 of the circuit board 100, the insertion end 3 of the pin 2 is utilized, that is, the tip 31 and the first surface 32 of the insertion end 3 are utilized to guide, so that the peripheral surface 9 of the connecting end 4 of the pin 2 is in interference fit with the circuit board hole 101, specifically, the connecting end 4 is elastically deformed to press the through hole 8 of the connecting end 4, the peripheral surface 9 is in close surface contact fit with the inner hole wall of the circuit board hole 101, and the radial direction of the pin 2 is positioned; and link 4 with circuit board hole 101's the in-process that takes place interference fit, utilize spacing end 5's regulation recess 6 is right link 4 gets into or extracts circuit board hole 101's the degree of depth carries out transition regulation, utilizes spacing end 5 spacing boss 7 restriction link 4 gets into or extracts circuit board hole 101's the degree of depth, it is right to realize the location on the length extending direction of stitch 2.

When the stitch 2 of the needle body 1 is inserted into the circuit board hole 101 of the circuit board 100, the product structure of the connecting end 4 changes, the connecting end 4 changes from a natural telescopic state to an elastic compression state, at this time, the stitch 2 is embedded between the connecting end 4 and the circuit board hole 101, the elastic compression state of the connecting end 4 and the limit boss 7 combined with the limit end 5 can prevent the needle body 1 from falling off from the circuit board hole 101, so that the stitch 2 and the circuit board 100 are detached inconveniently, and the electrical conduction is realized.

The utility model provides a solderless contact pin, it has a stitch body 1 and a stitch 2, stitch 2 is used for being connected with circuit board hole 101 of circuit board 100, stitch 2 includes that one inserts end 3, a link 4 and a spacing end 5, utilizes stitch 2 insert end 3 guide effect and run through circuit board hole 101, make link 4 with interference fit is realized to circuit board hole 101, link 4 is elastic structural component, utilizes adjust recess 6 adjustment stitch 2 link 4 inserts the degree of depth in circuit board hole 101 utilizes spacing boss 7 restriction stitch 2 insert end 3 and insert the degree of depth of circuit board hole 101, thereby solve stitch 2 with circuit board 100 dismantles inconvenient problem, realizes that the electrical property switches on. And the utility model discloses simple structure, installation, dismantlement are convenient to, manufacturing process is simple, low in production cost, and the commonality is high, and is more reliable practical, and the installation of satisfying current motorcycle type that can be better has avoided complicated project organization and manufacturing process.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A solderless contact pin has a pin body and a pin for connection with a circuit board hole, wherein the pin includes an insertion end and a connection end,

the inserting end is arranged at one end of the pin, which is far away from the needle body, and is provided with a pointed end; and the number of the first and second electrodes,

the connecting end is arranged between the insertion end and the needle body, and the peripheral surface of the connecting end is in interference fit with the circuit board hole; and the number of the first and second groups,

the connecting end is an elastic structural part.

2. The solderless contact pin of claim 1, wherein the pin further includes a retention boss disposed at an end of the pin proximate to the pin body, wherein a minimum outer dimension of the connection end, the retention boss, is greater than a minimum inner diameter dimension of the circuit board hole in a radial direction along the pin.

3. The solderless contact pin of claim 2, wherein the pin further includes an adjustment groove disposed at an end of the retention boss facing away from the pin body, wherein a maximum outer dimension of the insertion end and the adjustment groove is less than or equal to a minimum inner diameter dimension of the circuit board hole in a radial direction along the pin.

4. The solderless contact pin of claim 3, wherein the insertion end, the connection end, the adjustment groove, the limit boss, and the pin body are of a unitary construction.

5. The solderless pin of claim 1, wherein at least a first through hole is provided in the connection end.

6. The solderless pin of claim 1, wherein the outer peripheral surface of the connecting end is convexly curved or, alternatively, the cross-sectional profile of the connecting end is arcuate along the length of the pin.

7. The solderless pin of claim 1, wherein a cross-sectional profile of the tip along a length of the pin is any one of a figure of eight, a taper, and an arc.

8. The solderless pin of claim 3 wherein an outer surface of the adjustment groove is concavely curved.

9. The solderless contact pin of claim 1, wherein a pin shoulder is further disposed at an end of the pin body facing away from the pin, the pin shoulder being integrally connected to the pin body.

10. The solderless pin of claim 9, wherein the pin shoulder is provided with a second through hole.