CN203774503U

CN203774503U - Contact pin

Info

Publication number: CN203774503U
Application number: CN201420140491.5U
Authority: CN
Inventors: 蒋喜林; 罗淑芳; 黄秋雷; 杨浩凯
Original assignee: Wenzhou Shen Ji Electronic Science And Technology Co Ltd
Current assignee: Wenzhou Shen Ji Electronic Science And Technology Co Ltd
Priority date: 2014-03-26
Filing date: 2014-03-26
Publication date: 2014-08-13
Anticipated expiration: 2024-03-26

Abstract

The utility model discloses a contact pin which comprises a pin body and pin heads arranged at two ends of the pin body. Two sides of the pin body are respectively and convexly provided with an agnail-shaped snapping part. The positive projection view of the snapping part is an obtuse triangle which is composed of a long edge and two short edges. A random short edge of the snapping part is arranged integrally with the needle body, and the other short edge and the needle body form a hollow acute angle. The snapping part is snapped with a snapping groove on the inner wall of the through hole of a plastic member. Even certain-degree deformation of the channel section occurs in the squeezing process of the snapping part into the channel section, because an acute angle is formed between the short edge of the snapping part and the snapping groove, the snapping part is barb-shaped. In squeezing, the snapping part is further snapped into the channel section and the snapping is firmer when the pressure is larger. Compared with the snapping part of a right-angled triangle, the snapping part of the insert pin has higher fastening force, so that connection between the insert pin and a plastic member is firmer.

Description

Contact pin

Technical field

The utility model relates to a kind of electronics contact pin, and more particularly, it relates to a kind of contact pin of automotive connector.

Background technology

Contact pin is a kind of electric-conductor, is widely used in the various electronic devices and components such as automotive connector terminal, various PCB wiring board, computer connector terminal.

At present, contact pin on market, as shown in Figure 3, Figure 4, it comprises the needle body 1 that is rectangular-shaped, the two ends of described needle body 1 are equipped with the syringe needle 2 that is " pyramid ", and the both sides of described needle body 1 all convex with Access Division 3, the rectangular triangle of forward projection's view of described Access Division 3, right-angle side and the needle body 1 of described Access Division 3 are wholely set, and its another right-angle side is vertical with needle body 1.Contact pin is inserted in the through hole of plastic, be provided with the draw-in groove suitable with Access Division 3 in through hole, Access Division 3 and draw-in groove clamping, provide and prevent that contact pin from departing from the anticreep power of through hole.

This contact pin, Access Division 3 clamp-on in draw-in groove and with the process of its clamping in, draw-in groove is squeezed and produces deformation to a certain degree, in long-term frequent grafting process, the deformation quantity accumulation of draw-in groove becomes large, and rectangular leg-of-mutton Access Division 3 cannot address this problem, and causes Access Division 3 loosening, insecure with draw-in groove clamping, make contact pin insecure with being connected of plastic.

Utility model content

The deficiency existing for prior art, the purpose of this utility model is to provide a kind of contact pin being connected firmly.

For achieving the above object, the utility model provides following technical scheme: a kind of contact pin, comprise needle body and be located at the syringe needle at needle body two ends, the both sides of described needle body all convex with the Access Division that is reversed acanthoid, forward projection's view of described Access Division is by a long limit and two obtuse triangles that minor face forms, any minor face and the needle body of described Access Division are wholely set, and its another minor face and needle body form the acute angle of hollow out.

By adopting technique scheme, the draw-in groove clamping of Access Division and plastic through-hole wall, even in the process that draw-in groove is clamp-oned in Access Division, make draw-in groove that deformation to a certain degree occur, but because Access Division is for being acute angle with the minor face of draw-in groove clamping, make Access Division be reversed acanthoid, in the time being squeezed, the further clamping in Access Division enters in draw-in groove, and the larger clamping of pressure is more firm, there is stronger fastening force the Access Division of comparing right-angled triangle, contact pin is connected more firm with plastic.

The utility model is further set to: described needle body is provided with the Access Division of multiple same structures.

By adopting technique scheme, fastening force is further improved in multiple Access Divisions, contact pin is connected more firm with plastic.

The utility model is further set to: the angle of described acute angle is set to 80 degree.

By adopting technique scheme, the angle of acute angle arranges unsuitable too small, cross young pathbreaker and cause the undercapacity of Access Division, and Access Division further the amount in accessible draw-in groove compared with microcosmic, in addition comprehensive production cost and processing difficulty, it is optimum value that the angle of acute angle is set to 80 degree.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model contact pin embodiment;

Fig. 2 is the A portion enlarged drawing of Fig. 1;

Fig. 3 is the structural representation of traditional contact pin;

Fig. 4 is the B portion enlarged drawing of Fig. 3.

Description of reference numerals: 1, needle body; 2, syringe needle; 3, Access Division; 4, grow limit; 5, minor face; 6, acute angle.

Embodiment

Referring to figs. 1 through Fig. 2, the utility model contact pin embodiment is described further.

A kind of contact pin, comprise needle body 1 and be located at the syringe needle 2 at needle body 1 two ends, the both sides of described needle body 1 all convex with the Access Division 3 that is reversed acanthoid, forward projection's view of described Access Division 3 is by a long limit 4 and two obtuse triangles that minor face 5 forms, any minor face 5 and the needle body 1 of described Access Division 3 are wholely set, and its another minor face 5 and needle body 1 form the acute angle 6 of hollow out.

By adopting technique scheme, the draw-in groove clamping of Access Division 3 and plastic through-hole wall, even in the process that draw-in groove is clamp-oned in Access Division 3, make draw-in groove that deformation to a certain degree occur, but because Access Division 3 is for being acute angle 6 with the minor face 5 of draw-in groove clamping, make Access Division 3 be reversed acanthoid, in the time being squeezed, the further clamping in Access Division 3 enters in draw-in groove, the larger clamping of pressure is more firm, there is stronger fastening force the Access Division 3 of comparing right-angled triangle, contact pin is connected with plastic more firmly (be it should be noted that herein, hangnail structure on the similar fish hook in Access Division 3 of this reversed acanthoid, extruding force is larger, clamping is more firm).

Described needle body 1 is provided with the Access Division 3 of multiple same structures.

By adopting technique scheme, fastening force is further improved in multiple Access Divisions 3, contact pin is connected more firm with plastic.

The angle of described acute angle 6 is set to 80 degree.

By adopting technique scheme, the angle of acute angle 6 arranges unsuitable too small, cross young pathbreaker and cause the undercapacity of Access Division 3, and amount in the further accessible draw-in groove in Access Division 3 is compared with microcosmic, in addition comprehensive production cost and processing difficulty, it is optimum value that the angle of acute angle 6 is set to 80 degree.

Claims

1. a contact pin, comprise needle body and be located at the syringe needle at needle body two ends, it is characterized in that: the both sides of described needle body all convex with the Access Division that is reversed acanthoid, forward projection's view of described Access Division is by a long limit and two obtuse triangles that minor face forms, any minor face and the needle body of described Access Division are wholely set, and its another minor face and needle body form the acute angle of hollow out.

2. contact pin according to claim 1, is characterized in that: described needle body is provided with the Access Division of multiple same structures.

3. contact pin according to claim 1 and 2, is characterized in that: the angle of described acute angle is set to 80 degree.