CN201181757Y

CN201181757Y - spring-loaded contact probe

Info

Publication number: CN201181757Y
Application number: CNU2007200614598U
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: 2009-01-14
Anticipated expiration: 2017-12-14

Abstract

The utility model relates to a spring contact probe, which belongs to the technical field of probe type connectors and comprises an inner tube, a spring, a movable needle shaft and a fixed needle shaft, wherein the inner tube is provided with a straight hole which is communicated up and down; the bottom of the movable needle shaft is an inclined plane, one end of the spring is contacted with the inclined plane at the bottom of the movable needle shaft, and the other end of the spring is contacted with the fixed needle shaft; the inner tube is equipped with limit flange on cup jointing the inner wall of fixed needle axle, and this limit flange closely cooperates with fixed needle axle because the bottom of needle axle is established to the inclined plane for the needle axle can the run-off the straight when the action, the area of contact of increase and inner tube, and then reduces the resistance between needle axle and the inner tube, increases the stability of connector conduction, moreover the utility model discloses an both ends all have the needle axle, and the range of application is wide.

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, the spring riveted is an one, needle shaft can move both vertically up and down under the effect of external force and spring, when some occasion, in the time of need doing needle shaft more elongatedly, because the contact-making surface of needle shaft and spring is the plane, when moving up and down, needle shaft can be offset, the center line that promptly departs from former needle shaft and interior pipe place, in the demanding occasion of a contact precision, existing connector tends to occur the phenomenon of loose contact, influences the electrical connection effect of equipment; In some use occasion, we wish that the two ends of connector all have probe, and are more convenient to use like this, have probe but existing connector all is an end, can't satisfy the demand.

The utility model content:

The purpose of this utility model is to exist not enough and a kind of spring contact probe is provided at prior art, and it has overcome the shortcoming that existing connector needle shaft can be offset when moving up and down, and two ends all have probe, can use in various occasions.

To achieve these goals, the technical solution adopted in the utility model is: the spring contact probe comprises interior pipe, spring, movable needle shaft and fixing needle shaft, interior pipe offers the straight hole of up/down perforation, movable needle shaft and fixedly needle shaft be respectively equipped with limited step, in being connected on, movable needle shaft and locking pin axle sleeve manage in the straight hole at two ends, with interior pipe riveted be one, spring is installed in the straight hole, and at movable needle shaft with fixedly between the needle shaft; Movable needle shaft bottom offers the hole coaxial with movable needle shaft, and in the hole of spring one end insertion activity needle shaft bottom, the other end contacts with fixing needle shaft; Interior pipe socket fixedly the inwall of needle shaft be provided with defining flange, this defining flange and fixedly needle shaft closely cooperate.

Described movable needle shaft and fixedly the end face of the exposed junction of needle shaft all be ball face shape.

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

Described defining flange is the annular flange flange that inner tube wall forms.

The end that described fixedly needle shaft contacts with spring offers and the fixing coaxial hole of needle shaft, in the spring patchhole.

The end face that described fixedly needle shaft contacts with spring is the plane.

The beneficial effects of the utility model are: because the bottom of movable needle shaft offers the hole coaxial with movable needle shaft, in the spring patchhole, when movable needle shaft moves up and down, the axis of movable needle shaft and the axis of interior pipe are remained on the same straight line, make movable needle shaft and power consumption equipment keep accurately contacting, guarantee to be electrically connected preferably effect; In addition, be provided with a fixing needle shaft at the other end of interior pipe, by get ready at outer wall of inner tube or the straight hole of slot rolling mode pipe in fixedly needle shaft is fixed in, the connector that two ends have a needle shaft can satisfy the needs of different occasions, so the utility model not only has good electrical connection effect, and applied range.

Description of drawings:

Fig. 1 is the perspective view of the

utility model embodiment

1,2;

Fig. 2 is the front view of the

utility model embodiment

1,2;

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

Fig. 4 be Fig. 2 the A-A cutaway view two;

Fig. 5 is the perspective view of the

utility model embodiment

3,4;

Fig. 6 is the front view of the

utility model embodiment

3,4.

Embodiment:

See shown in Fig. 1,2,3, this is embodiment 1 of the present utility model, pipe 1 in the spring contact probe comprises, spring 2, movable needle shaft 3 and fixing needle shaft 4, interior pipe 1 offers the straight hole 11 of up/down perforation, movable needle shaft 3 and fixedly needle shaft 4 be respectively equipped with

limited step

31,41, movable needle shaft 3 and in fixedly needle shaft 4 is socketed in the straight hole 11 at pipe 1 two ends, with interior pipe 1 riveted be one, spring 2 is installed in the straight hole 11, and at movable needle shaft 3 with fixedly between the needle shaft 4; Movable needle shaft 3 bottoms offer the hole 32 coaxial with movable needle shaft 3, and described fixedly needle shaft 4 offers the hole 42 coaxial with fixing needle shaft 4, and in the hole 32 of spring 2 one end insertion activity needle shafts 3 bottoms, the other end inserts the fixedly hole 42 of needle shaft 4; In the pipe 1 socket fixedly the inwall of needle shaft 4 be provided with defining flange 12, this defining flange 12 is the interruption salient point that interior pipe 1 inwall forms, this interruption salient point can be by getting formation ready at interior pipe 1 outer wall, be interrupted salient point and fixedly needle shaft 4 closely cooperate, in the straight hole 11 with pipe 1 in fixedly needle shaft 4 is fixed on, when movable needle shaft 3 moves up and down, the axis of movable needle shaft 3 and the axis of interior pipe 1 are remained on the same straight line, make movable needle shaft 3 and power consumption equipment keep accurately contacting.

Described movable needle shaft 3 and fixedly the end face of the exposed junction of needle shaft 4 all be ball face shape, contact to guarantee that the utility model and power consumption equipment are point-to-point.

See shown in Fig. 1,2,4, this is embodiment 2 of the present utility model, as different from Example 1, in the present embodiment, the end face that described fixedly needle shaft 4 contacts with spring 2 is the plane, guarantees that the contraction of spring and the exhibition of rising remain on the same axis, and then assurance activity needle shaft 3 is when moving up and down, the axis of movable needle shaft 3 and the axis of interior pipe 1 are remained on the same straight line, and other structures are identical with embodiment 1, no longer repeat here.

See shown in Fig. 3,5,6, this is embodiment 3 of the present utility model, as different from Example 1, in the present embodiment, described defining flange 12 is the annular flange flange that interior pipe 1 inwall forms, and this annular flange flange can be by forming at interior pipe 1 outer wall roll extrusion groove, to guarantee in the straight hole 11 with pipe 1 in fixedly needle shaft 4 is fixed on, other structures are identical with embodiment 1, no longer repeat here.

See shown in Fig. 4,5,6, this is embodiment 4 of the present utility model, as different from Example 1, in the present embodiment, described defining flange 12 is the annular flange flange that interior pipe 1 inwall forms, this annular flange flange can be by forming at interior pipe 1 outer wall roll extrusion groove, to guarantee in the straight hole 11 with pipe 1 in fixedly needle shaft 4 is fixed on; The end face that described fixedly needle shaft 4 contacts with spring 2 is the plane, guarantee that the contraction of spring 2 and the exhibition of rising remain on the same axis, and then assurance activity needle shaft 3 is when moving up and down, the axis of movable needle shaft 3 and the axis of interior pipe 1 are remained on the same straight line, other structures are identical with embodiment 1, no longer repeat 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. The spring-type contact probe includes an inner tube, a spring, a movable needle shaft and a fixed needle shaft. The inner tube is provided with a straight hole through up and down. The needle shaft and the fixed needle shaft are sleeved in the straight holes at both ends of the inner tube, riveted together with the inner tube, the spring is installed in the straight hole, and is located between the movable needle shaft and the fixed needle shaft; There is a hole coaxial with the movable needle shaft. One end of the spring is inserted into the hole at the bottom of the movable needle shaft, and the other end is in contact with the fixed needle shaft; The edge fits closely with the fixed needle shaft.

2. The spring-type contact probe according to claim 1, characterized in that: both the end surfaces of the exposed ends of the movable needle shaft and the fixed needle shaft are in the shape of spherical surfaces.

3. The spring-type contact probe according to claim 1, characterized in that: the limiting flange is a discontinuous bump formed on the inner wall of the inner tube.

4. The spring-type contact probe according to claim 1, characterized in that: the limiting flange is an annular flange formed on the inner wall of the inner tube.

5. The spring-type contact probe according to claim 3 or 4, wherein a hole coaxial with the fixed needle shaft is opened at one end of the fixed needle shaft in contact with the spring, and the spring is inserted into the hole.

6. The spring-type contact probe according to claim 3 or 4, characterized in that: the end surface of the fixed needle shaft in contact with the spring is a plane.