CN210443764U

CN210443764U - Twist needle contact

Info

Publication number: CN210443764U
Application number: CN201922000719.6U
Authority: CN
Inventors: 王芳; 唐军
Original assignee: Mianyang Huayongsheng Technology Co ltd
Current assignee: Mianyang Huayongsheng Technology Co ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-05-01
Anticipated expiration: 2029-11-19

Abstract

The utility model discloses a twist needle contact element, including twist needle, the sleeve pipe that is used for fixed twist needle, twist needle includes that three inner circle copper wires and seven outer lane copper wires reverse transposition, twist needle middle part is protruding, still include the jack, the inner wall of jack is provided with first annular groove, first annular groove external diameter and twist needle bulge external diameter looks adaptation, after twist needle and jack cooperation, first annular groove lets twist needle bulge atress produce weak compression deformation and axial extension, twist needle bulge and first annular groove produce the interaction force, make twist needle fix in the jack; the first annular groove reduces the metal deformation degree of the convex part of the twist needle, and prolongs the practical service life of the twist needle contact element; the raised part of the twist needle is contacted with the first annular groove, and the contact of the first annular groove has a limiting effect on the twist needle, so that the twist needle is not easy to fall off from the jack, and the stability of the twist needle contact element is improved.

Description

Twist needle contact

Technical Field

The utility model relates to a contact, concretely relates to fried dough twist needle contact.

Background

The contact refers to a conductive feature of the element that cooperates with a corresponding conductive feature to provide an electrical path. The utility model relates to a twist needle contact element, which belongs to a twisted wire contact element, in the prior art, seven strands of beryllium copper wires outside the twisted wire type contact pin are deformed and closely contact with the wall of a jack pipe, thereby generating reliable electric contact; however, the adoption of the mode has the following defects that 1, after the twisted contact pin is used for many times, the convex part on the twisted contact pin generates metal fatigue and loses a part of elastic deformation capacity, so that the acting force between the contact pin and the jack is deformed, and the stability of the twisted contact element is influenced; 2. after the contact pin is inserted into the jack, a limiting device is not arranged, and whether the contact pin is inserted in place or not cannot be known in the using process of the twisted wire type contact piece.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: the connection stability of the existing twisted wire type contact element is poor after the existing twisted wire type contact element is used for a plurality of times. The utility model provides a problem that current hank line formula contact piece connection stability is poor is solved to fried dough twist needle contact.

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: a twist needle contact element comprises a twist needle and a sleeve for fixing the twist needle, wherein the twist needle comprises three inner ring copper wires and seven outer ring copper wires which are reversely twisted, two ends of the twist needle are welded, the middle of the twist needle is raised, the sleeve also comprises a jack, a first annular groove is arranged on the inner wall of the jack, the outer diameter of the first annular groove is matched with the outer diameter of the raised part of the twist needle, after the twist needle is matched with the jack, the raised part of the twist needle is in seven-point tight contact with the first annular groove, the first annular groove enables the raised part of the twist needle to generate weak compression deformation and axial extension under stress, and the raised part of the twist needle and the first annular groove generate interaction force, so that the twist needle is fixed in the jack; the arrangement of the first annular groove reduces the metal deformation degree of the protruding part of the twist needle, prolongs the practical service life of the twist needle contact element, and enhances the stability of the twist needle contact element, although the metal deformation degree of the protruding part of the twist needle is reduced, the size of the first annular groove can be set by a person skilled in the art, so that the metal deformation degree of the protruding part of the twist needle can be reduced without greatly losing the acting force between the first annular groove and the twist needle, and the twist needle can still be fixed in the jack by the deformation of the protruding part of the twist needle and the acting force generated by the first annular groove, so that the twist needle contact element has high reliability; the raised part of the twist needle is in contact with the first annular groove, and the first annular groove is in contact with the twist needle to limit the twist needle, so that the twist needle is not easy to fall off from the jack, and the stability of the twist needle contact element is improved.

Furthermore, a second annular groove is further arranged in the jack, the projection of the longitudinal section of the second annular groove is arc-shaped, and the second annular groove is arranged at the position close to the opening of the jack.

Further, still include solid fixed ring, gu fixed ring fixed connection is on the twist needle, the solid fixed ring axis coincides with twist needle axis, gu fixed ring adopts elastic material, gu fixed ring and second annular groove phase-match, after the twist needle inserts the jack completely, gu fixed ring produces elastic deformation, gu fixed ring and second annular groove contact, the effect that gu fixed ring set up, when inserting the twist needle into the jack, gu fixed ring and second annular groove contact, can give the feedback of operating personnel a power, operating personnel just can know the twist needle and inserted on the corresponding position of jack, can judge whether the contact pin inserts and targets in place, gu fixed ring can also prevent that the twist needle in the jack from becoming flexible, and then guaranteed the stability of twist needle contact piece in the use.

Furthermore, the sleeve and the twist needle are fixedly connected by four-point compression joint.

Furthermore, knurling is arranged on the outer circumferential surface of the sleeve, the sleeve is made of H62Y, and the knurling arrangement increases friction force between the outer wall of the sleeve and a contact object, so that the outer wall of the sleeve has an anti-skid function.

Furthermore, the copper wire of the twist needle is made of beryllium bronze.

The utility model has the advantages that:

1. the first annular groove is formed in the inner wall of the jack of the twist needle contact element, and after the twist needle is matched with the jack, the arrangement of the first annular groove reduces the metal deformation degree of the raised part of the twist needle, and prolongs the practical service life of the twist needle contact element; the protruding part of the twist needle is in contact with the first annular groove, and the first annular groove is in contact with the twist needle to limit the twist needle, so that the twist needle is not easy to fall off from the jack, and the stability of the twist needle contact element is improved.

2. The fixing ring is fixedly arranged on the twist needle of the twist needle contact element and matched with the second annular groove, after the twist needle is completely inserted into the jack, the fixing ring generates elastic deformation and is in contact with the second annular groove, the fixing ring has the function of setting, when the twist needle is inserted into the jack, the fixing ring is in contact with the second annular groove, force feedback can be given to an operator, the operator can know that the twist needle is inserted into the corresponding position of the jack, whether the contact pin is inserted in place or not can be judged, the fixing ring can prevent the twist needle in the jack from loosening, and the stability of the twist needle contact element in the using process is further ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic structural view of the twist needle contact element of the present invention.

Fig. 2 is a schematic view of the structure of the insertion hole of the twist needle contact element of the present invention.

Fig. 3 is a schematic diagram of the twist needle structure of the twist needle contact element of the present invention and a left view of the twist needle.

Reference numbers and corresponding part names in the drawings: 1-a twist needle, 2-a sleeve, 3-a jack, 301-a first annular groove, 302-a second annular groove and 4-a fixing ring.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and embodiments:

example 1

As shown in fig. 1-3, a twist needle contact member comprises a twist needle 1 and a sleeve 2 for fixing the twist needle 1, wherein the twist needle 1 comprises three inner ring copper wires and seven outer ring copper wires which are reversely twisted, two ends of the twist needle 1 are welded, the middle of the twist needle 1 is raised, the twist needle further comprises a jack 3, a first annular groove 301 is arranged on the inner wall of the jack 3, the outer diameter of the first annular groove 301 is matched with the outer diameter of the raised part of the twist needle 1, after the twist needle 1 is matched with the jack 3, the raised part of the twist needle 1 and the first annular groove 301 form seven points of close contact, the first annular groove 301 enables the raised part of the twist needle 1 to be stressed to generate weak compression deformation and axial extension, and the raised part of the twist needle 1 and the first annular groove 301 generate mutual acting force, so that the twist needle 1 is fixed in the jack 3; the arrangement of the first annular groove 301 reduces the metal deformation degree of the convex part of the twist needle 1, prolongs the practical service life of the twist needle contact element, and enhances the stability of the twist needle contact element, although the metal deformation degree of the convex part of the twist needle 1 is reduced, a person skilled in the art can set the size of the first annular groove 301, so that the metal deformation degree of the convex part of the twist needle 1 can be reduced simultaneously, the acting force between the first annular groove 301 and the twist needle 1 cannot be greatly lost, the deformation of the convex part of the twist needle 1 and the acting force generated by the first annular groove 301 can still enable the twist needle 1 to be fixed in the jack 3, and the twist needle contact element has high reliability; the raised part of the twist needle 1 is contacted with the first annular groove 301, the first annular groove 301 is contacted with the twist needle 1 to limit the twist needle 1, so that the twist needle 1 is not easy to fall out of the jack 3, and the stability of the contact piece of the twist needle is improved.

Example 2

As shown in fig. 1-3, the present embodiment is further defined on the basis of embodiment 1: still be provided with second annular groove 302 in jack 3, the projection of second annular groove 302 longitudinal section is circular-arc, and second annular groove 302 sets up and is being close to jack 3 opening part, still includes solid fixed ring 4, gu fixed ring 4 fixed connection is on twist needle 1, gu fixed ring 4 axis and twist needle 1 axis coincidence, gu fixed ring 4 adopts elastic material, gu fixed ring 4 and second annular groove 302 phase-match, after twist needle 1 inserts jack 3 completely, gu fixed ring 4 produces elastic deformation, gu fixed ring 4 contacts with second annular groove 302, the effect that gu fixed ring 4 set up, when inserting twist needle 1 in jack 3, gu fixed ring 4 and second annular groove 302 contact, can give the feedback of operating personnel's a power, operating personnel just can know twist needle 1 and insert the corresponding position of jack 3, can judge whether the contact pin inserts and targets in place, the fixing ring 4 can also prevent the twist needle 1 in the jack 3 from loosening, and further ensures the stability of the twist needle contact piece in the using process.

Example 3

As shown in fig. 1-3, the present embodiment is further defined on the basis of embodiment 1: the sleeve 2 and the twist needle 1 are fixedly connected through four-point crimping, knurls are arranged on the outer circumferential surface of the sleeve 2, the sleeve 2 is made of H62Y, the friction force between the outer wall of the sleeve 2 and a contact object is increased due to the knurls, the outer wall of the sleeve 2 has an anti-skidding function, and copper wires of the twist needle 1 are made of beryllium bronze materials.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model belongs to the technical field of the ordinary skilled person say, do not deviate from the utility model discloses a other embodiments that reach under the technical scheme all should be contained the utility model discloses a within the scope of protection.

Claims

1. A twist needle contact piece comprises a twist needle (1) and a sleeve (2) used for fixing the twist needle, wherein the twist needle (1) comprises three inner ring copper wires and seven outer ring copper wires which are reversely twisted, the two ends of the twist needle (1) are welded, and the middle of the twist needle (1) is raised, and is characterized by further comprising a jack (3), a first annular groove (301) is formed in the inner wall of the jack (3), the outer diameter of the first annular groove (301) is matched with the outer diameter of the raised part of the twist needle (1), after the twist needle (1) is matched with the jack (3), the raised part of the twist needle (1) is in seven-point tight contact with the first annular groove (301), the first annular groove (301) enables the raised part of the twist needle (1) to generate weak compressive deformation and axial extension under stress, and the raised part of the twist needle (1) and the first annular groove (301) generate interaction force, so that the twist needle (1) is fixed in the jack.

2. A twist needle contact according to claim 1, wherein a second annular groove (302) is further provided in the receptacle (3), the projection of the longitudinal section of the second annular groove (302) is arc-shaped, and the second annular groove (302) is provided near the opening of the receptacle (3).

3. The twist needle contact element according to claim 2, further comprising a fixing ring (4), wherein the fixing ring (4) is fixedly connected to the twist needle (1), the axis of the fixing ring (4) coincides with the axis of the twist needle (1), the fixing ring (4) is made of an elastic material, the fixing ring (4) is matched with the second annular groove (302), after the twist needle (1) is completely inserted into the insertion hole (3), the fixing ring (4) elastically deforms, and the fixing ring (4) is in contact with the second annular groove (302).

4. A twist needle contact according to claim 1, wherein the sleeve (2) and the twist needle (1) are fixedly connected by four-point crimping.

5. A twist needle contact according to claim 4, wherein the sleeve (2) is knurled on its outer circumference and the sleeve is H62Y.

6. A twist pin contact according to claim 1, characterized in that the copper wire of the twist pin (1) is beryllium bronze.