CN201149919Y

CN201149919Y - Spring type contact probe

Info

Publication number: CN201149919Y
Application number: CNU2007200614583U
Authority: CN
Inventors: 林璟宇
Original assignee: Dongguan CCP Contact Probes Co Ltd
Current assignee: Dongguan CCP Contact Probes Co Ltd
Priority date: 2007-12-14
Filing date: 2007-12-14
Publication date: 2008-11-12
Anticipated expiration: 2017-12-14

Abstract

The utility model relates to a spring type contact probe, which belongs to the technical field of the probe type connector. The spring type contact probe comprises an inner tube, a spring and a needle axle connected with the inner tube, the inner tube is provided with a blind hole, the spring is arranged in the blind hole, the end surface of the bottom of the needle axle is a bevel surface, one end of the spring is contacted with the bevel surface at the bottom of the needle axle, the other end of the spring is contacted with the bottom of the blind hole of the inner tube, two limit steps are arranged at one end of the needle axle, a limit area for limiting the vertical movement of the needle axle is formed between the two limit steps, and a limit flange is arranged on the inner wall of the inner tube and is positioned in the limit area of the needle axle. Because the bevel surface is arranged at the bottom of the needle axle, the needle axle can decline during acting, the contact area of the inner tube is increased, the resistance value between the needle axle and the inner tube is reduced, and the conduction stability of the connector is increased.

Description

The spring contact probe

Technical field:

The utility model relates to probe-type connector technique field, refers in particular to a kind of spring contact probe.

Background technology:

Along with science and technology development, digital product emerges one after another, has been widely used such as portable sets such as digital camera, Digital Video, mobile phones, and the power supply that this type of portable set adopts mostly is rechargeable battery repeatedly greatly, therefore, rechargeable battery also is widely used.Generally contact between battery and the power consumption equipment by connector, existing connector commonly used generally comprises needle shaft, interior pipe and spring, spring is arranged in the cavity of interior pipe, in being socketed in, needle shaft contacts with spring in the cavity of pipe, needle shaft and interior pipe, spring riveted are one, and needle shaft can move both vertically up and down under the effect of external force and spring.During use, needle shaft directly contacts with power supply, usefulness as the electric power conduction, general mobile phone connector requires the resistance of connector lower, the resistance of connector is except outside the Pass having with the material of using, also the contact area with needle shaft and interior pipe has direct relation, the size of resistance is inversely proportional to the contact area of needle shaft and interior pipe, be that the big more resistance of contact area is low more, the needle shaft of existing connector is done vertical up-or-down movement under the effect of spring, the contact area of needle shaft and interior pipe is little, thereby resistance is bigger and unstable.

The utility model content:

The purpose of this utility model is to have deficiency and a kind of spring contact probe is provided at prior art, and needle shaft and interior pipe contact area that it has overcome existing connector are little, and the shortcoming that resistance is big makes electric power transfer more stable.

To achieve these goals, the technical solution adopted in the utility model is: the spring contact probe comprises interior pipe, spring, the needle shaft that is connected with interior pipe, interior pipe offers blind hole, spring is installed in this blind hole, the needle shaft bottom end face is the inclined-plane, spring one end contacts with the inclined-plane of needle shaft bottom, the blind hole bottom connection of the other end and interior pipe touches, described needle shaft one end is provided with two limited steps, form the up and down spacing zone of a restriction needle shaft between two limited steps, the inwall of interior pipe is provided with defining flange, and this defining flange is positioned at the spacing zone of needle shaft.

Described defining flange is the continuous circular shape flange that inner tube wall forms.

Described defining flange is the interruption salient point that inner tube wall forms.

The end face of described needle shaft exposed junction is a ball face shape.

The beneficial effects of the utility model are: because the bottom of needle shaft is made as the inclined-plane, make that needle shaft can run-off the straight when action, increase the contact area with interior pipe, and then reduce the resistance between needle shaft and the interior pipe, increase the stability that connector conducts; In addition, needle shaft moves up and down spacingly is provided with flange and can realizes by step and inner tube wall are set on needle shaft, the flange of inwall can be by realizing at outer wall of inner tube roll extrusion groove or the mode got ready, adopt this structure to make that manufacture craft of the present utility model is simpler, enhance productivity, save cost, be convenient to the large-scale production of industrialization.

Description of drawings:

Fig. 1 is the perspective view of the utility model embodiment 1;

Fig. 2 is the front view of the utility model embodiment 1;

Fig. 3 is the A-A cutaway view of Fig. 2;

Fig. 4 is the perspective view of the utility model embodiment 2;

Fig. 5 is the front view of the utility model embodiment 2;

Fig. 6 is the B-B cutaway view of Fig. 5.

Embodiment:

See Fig. 1,2, shown in 3, this is embodiment 1 of the present utility model, pipe 1 in it comprises, spring 2, the needle shaft 3 that is connected with interior pipe 1, interior pipe 1 offers blind hole 11, spring 2 is installed in this blind hole 11, needle shaft 3 bottom end faces are inclined-plane 31, spring 2 one ends contact with the inclined-plane 31 of needle shaft 3 bottoms, blind hole 11 bottom connections of the other end and interior pipe 1 touch, described needle shaft 3 one ends are provided with two limited steps 32, form the up and down spacing zone 33 of a restriction needle shaft 3 between two limited steps 32, the inwall of interior pipe 1 is provided with defining flange 12, and this defining flange 12 is positioned at the spacing zone 33 of needle shaft 3, described defining flange 12 is the continuous circular shape flange that interior pipe 1 inwall forms, this annular flange flange can be by forming at interior pipe 1 outer wall roll extrusion groove, the end face of described needle shaft 3 exposed junctions is a ball face shape, because be made as inclined-plane 31 in the bottom of needle shaft 3, make needle shaft 3 when action, understand run-off the straight, increase contact area with interior pipe 1, and then reduce resistance between needle shaft 3 and the interior pipe 1, increase the stability of connector conduction.

See shown in Fig. 4,5,6, this is embodiment 2 of the present utility model, with embodiment 1 not same be, in the present embodiment, described defining flange 12 is the interruption salient point that interior pipe 1 inwall forms, and this interruption salient point can be got number ready and can along the circumferential direction evenly be provided with four or a plurality of by getting formation ready at interior pipe 1 outer wall, other structure is identical with embodiment 1, no longer repeats here.

The above embodiment, it is preferred embodiments of the present utility model, be not to be used for limiting the utility model practical range,, all should be included in the utility model patent claim so all equivalences of doing according to the described structure of the utility model claim, feature and principle change or modify.

Claims

1. spring contact probe, comprise interior pipe, spring, the needle shaft that is connected with interior pipe, interior pipe offers blind hole, spring is installed in this blind hole, it is characterized in that: the needle shaft bottom end face is the inclined-plane, spring one end contacts with the inclined-plane of needle shaft bottom, the blind hole bottom connection of the other end and interior pipe touches, described needle shaft one end is provided with two limited steps, form the up and down spacing zone of a restriction needle shaft between two limited steps, the inwall of interior pipe is provided with defining flange, and this defining flange is positioned at the spacing zone of needle shaft.

2. spring contact probe according to claim 1 is characterized in that: described defining flange is the continuous circular shape flange that inner tube wall forms.

3. spring contact probe according to claim 1 is characterized in that: described defining flange is the interruption salient point that inner tube wall forms.

4. spring contact probe according to claim 1 is characterized in that: the end face of described needle shaft exposed junction is a ball face shape.