CN214625459U - Spring contact body and electric connector - Google Patents

Abstract

The utility model provides a spring type contact body and an electric connector, belonging to the technical field of conductive connection, wherein, the spring type contact body comprises a hollow tubular contact sleeve, a contact is sleeved in the axial front part of the contact sleeve cavity, and the axial rear end of the contact sleeve is fixedly connected with a contact tail; a guide sleeve is sleeved between the contact and the cavity wall of the contact sleeve, the axial front end of the contact extends out of the contact sleeve, and the periphery of the contact is in clearance fit with the inner wall of the guide sleeve so as to be guided by the guide sleeve to reciprocate in the contact sleeve cavity along the axial direction; and a conductive contact piece is arranged between the contact and the contact sleeve and is respectively contacted with the periphery of the contact and the cavity wall of the contact sleeve so as to transmit current between the contact and the contact sleeve. This formula of suppressing contact is through setting up the uide bushing direction contact motion, and the contact motion is nimble, and the direction is effectual, is difficult for the jamming.

Description

Spring contact body and electric connector

Technical Field

The utility model belongs to the technical field of electrically conductive the connection, especially, relate to a formula of suppressing contact and electric connector.

Background

With the development of rail transit technology, the requirement for the stability of train signal transmission is higher and higher. The electric connector is used for transmitting current and signals between two elements which move relative to each other, the contact body is an important element for transmitting the current and the signals in the electric connector, and if the contact body is blocked, the electric connector is easy to generate a signal transmission transient interruption phenomenon under a vibration working condition.

The prior electric connector generally adopts a spring contact body, and the conductive contact body mainly comprises a jaw type, a crown spring type and a drum spring type. The jaw type structure is large in abrasion, poor in guiding and prone to failure under the action of a deviation force, so that poor contact is caused; the crown spring type structure is not easy to lose effectiveness, but the guide surface is short, the guide is poor, and the occurrence probability of clamping stagnation is still high; the drum spring type structure is not easy to lose efficacy, the guide surface of the drum spring type structure is long, the probability of clamping stagnation is reduced, however, the drum spring is not easy to process, the guide surface of the drum spring is two metal surfaces, the drum spring is easy to rub and wear, and the probability of clamping stagnation is increased after long-time use.

Therefore, how to provide a spring-type contact body which is not easy to generate clamping stagnation so as to meet the requirement of stability of train signal transmission is a technical problem which is urgently needed to be solved at present.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to foretell technical problem, provide a formula of suppressing contact and electric connector, this formula of suppressing contact is through setting up uide bushing direction contact motion, and the contact motion is nimble, and the direction is effectual, is difficult for the jamming.

In order to achieve the above object, the utility model discloses a technical scheme be:

the utility model provides a spring-type contact body, which comprises a hollow tubular contact sleeve, wherein a contact is sleeved in the axial front part of a contact sleeve cavity, and the axial rear end of the contact sleeve is fixedly connected with a contact tail; a guide sleeve is sleeved between the contact and the cavity wall of the contact sleeve, the axial front end of the contact extends out of the contact sleeve, and the periphery of the contact is in clearance fit with the inner wall of the guide sleeve so as to be guided by the guide sleeve to reciprocate in the contact sleeve cavity along the axial direction; and a conductive contact piece is arranged between the contact and the contact sleeve and is respectively contacted with the periphery of the contact and the cavity wall of the contact sleeve so as to transmit current between the contact and the contact sleeve.

Preferably, the wall of the tube cavity of the contact sleeve is provided with a stopping groove, the guide sleeve is provided with a convex part matched with the stopping groove, and the convex part is inserted into the stopping groove.

Preferably, the convex part is located at the axial rear end of the guide sleeve, the side wall of the guide sleeve is provided with a plurality of furling grooves along the generatrix direction of the guide sleeve, and the furling grooves extend from the axial rear end of the guide sleeve to the axial front end, so that one end of the guide sleeve, which is provided with the convex part, can be furled inwards to penetrate into the cavity of the contact sleeve when being installed into the cavity of the contact sleeve.

Preferably, the guide sleeve is made of wear-resistant and self-lubricating materials.

Preferably, the tube cavity of the contact sleeve comprises a first tube cavity and a second tube cavity which are sequentially communicated from the axial front end to the axial rear end of the contact sleeve, the inner diameter of the first tube cavity is smaller than that of the second tube cavity, and the guide sleeve is sleeved in the first tube cavity; the contact comprises a first guide section and a second guide section which are sequentially connected from the axial front end to the axial rear end of the contact, the inner walls of the first guide section and the guide sleeve are in clearance fit, the second guide section is positioned in the second tube cavity, the outer diameter of the second guide section is between the inner diameter of the guide sleeve and the inner diameter of the second tube cavity, and the conductive contact elements are respectively contacted with the periphery of the second guide section and the wall of the tube cavity of the second tube cavity.

Preferably, the conductive contact is a spring finger.

Preferably, the periphery of the contact is provided with a contact finger mounting groove, and the spring contact finger is embedded in the contact finger mounting groove.

Preferably, a spring is supported between the axial rear end of the contact and the contact tail to drive the contact to reciprocate in the axial direction in the contact sleeve cavity.

Preferably, one side of the contact tail, which is close to the contact, is provided with a guide post extending along the axial direction of the contact sleeve, one side of the contact, which is close to the contact tail, is provided with a blind hole for the guide post to be inserted, one axial end of the spring is embedded in the blind hole, and the other axial end of the spring is sleeved outside the guide post.

The utility model also provides an electric connector, including above-mentioned suppress formula contact.

Compared with the prior art, the utility model discloses an advantage and beneficial effect lie in:

1. the utility model provides an in the spring-type contact body, add the uide bushing between contact and contact cover, make the contact use the uide bushing as the direction when reciprocating motion, the contact motion is nimble, and the direction is effectual, greatly reduced jamming's possibility, reduced the probability that the signal breaks suddenly;

2. the utility model discloses in the suppress formula contact that some embodiments provided, adopt the spring to touch and indicate transmission current between contact and contact cover, can transmit the heavy current in the little space, required installation space is little, increase the guide length between contact and the contact cover under the condition that does not increase suppress contact size, be favorable to reducing the possibility of jamming, reduce the probability that the signal is broken momentarily, and simultaneously, adopt the spring to touch and indicate transmission current between contact and contact cover, the spring touches the contact force between the lumen wall of indicating and contact periphery and contact cover even, frictional force is little, difficult wearing and tearing, be favorable to increase of service life, reduce the possibility of jamming in the life cycle, even long-time use still is difficult for jamming.

Drawings

Fig. 1 is a schematic structural view of a spring contact according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a contact sleeve in a spring contact according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a contact in a spring contact according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a guide sleeve in a spring contact body according to a first embodiment of the present invention;

fig. 5 is a schematic structural view of a spring contact according to a second embodiment of the present invention;

fig. 6 is a schematic structural view of a contact in a spring contact according to a second embodiment of the present invention;

fig. 7 is a schematic structural view of a spring contact finger in a spring contact according to a second embodiment of the present invention;

in the above figures: 1. a contact sleeve; 11. a first lumen; 12. a second lumen; 13. a stopper groove; 2. a contact; 21. a first guide section; 22. a second guide section; 23. blind holes; 24. a contact finger mounting groove; 3. a contact tail; 4. a guide sleeve; 41. a convex portion; 42. a gathering groove; 5. a drum spring; 6. a spring; 7. a guide post; 8. connecting columns; 9. the spring touches the finger.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive step are within the scope of protection of the present application.

It is obvious that the drawings in the following description are only examples or embodiments of the present application, and that it is also possible for a person skilled in the art to apply the present application to other similar contexts on the basis of these drawings without inventive effort. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of ordinary skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments without conflict.

Unless defined otherwise, technical or scientific terms referred to herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. Reference to "a," "an," "the," and similar words throughout this application are not to be construed as limiting in number, and may refer to the singular or the plural. The present application is directed to the use of the terms "including," "comprising," "having," and any variations thereof, which are intended to cover non-exclusive inclusions; for example, a method or article that comprises a list of steps or elements is not limited to only those steps or elements listed, but may include additional steps or elements not listed, or may include additional steps or elements inherent to such method or article. The term "plurality" as referred to herein means two or more. Reference herein to the terms "first," "second," and the like, are merely distinguishing between similar items and not necessarily referring to a particular ordering for the items.

Example one

As shown in fig. 1-4, the present embodiment relates to a spring contact, which includes a hollow tubular contact sleeve 1, a contact 2 is sleeved in an axial front portion of a lumen of the contact sleeve 1, and a contact tail 3 is connected to an axial rear end of the contact sleeve 1 through a thread; a guide sleeve 4 is sleeved between the contact 2 and the wall of the pipe cavity of the contact sleeve 1, the axial front end of the contact 2 extends out of the contact sleeve 1, and the periphery of the contact 2 is in clearance fit with the inner wall of the guide sleeve 4 so as to be guided by the guide sleeve 4 to reciprocate in the pipe cavity of the contact sleeve 1 along the axial direction; and a conductive contact piece is arranged between the contact 2 and the contact sleeve 1 and is respectively contacted with the periphery of the contact 2 and the cavity wall of the contact sleeve 1 so as to transfer current between the contact 2 and the contact sleeve 1.

In this formula of suppressing contact body, guide sleeve 4 has been added between contact 2 and contact cover 1, makes contact 2 use guide sleeve 4 as the direction when reciprocating motion, and contact 2 moves in a flexible way, and the direction is effectual, and greatly reduced jamming's possibility reduces the probability that the signal breaks momentarily.

For the conductive contact, it should be noted that, in this embodiment, the conductive contact is specifically a drum spring 5, and those skilled in the art may also adopt conductive contacts adopted by existing elastic contact bodies, such as crown springs and claws.

As to the specific assembly manner of the contact 2, the contact sleeve 1, the guide sleeve 4 and the conductive contact, as shown in fig. 1-3, in this embodiment, the lumen of the contact sleeve 1 includes a first lumen 11 and a second lumen 12 sequentially communicating from the axial front end to the axial rear end of the contact sleeve 1, the inner diameter of the first lumen 11 is smaller than the inner diameter of the second lumen 12, and the guide sleeve 4 is sleeved in the first lumen 11; the contact 2 comprises a first guide section 21 and a second guide section 22 which are sequentially connected from the axial front end to the axial rear end of the contact 2, the first guide section 21 is in clearance fit with the inner wall of the guide sleeve 4, the second guide section 22 is positioned in the second tube cavity 12, the outer diameter of the second guide section 22 is between the inner diameter of the guide sleeve 4 and the inner diameter of the second tube cavity 12, and the conductive contact elements are respectively contacted with the outer periphery of the second guide section 22 and the tube cavity wall of the second tube cavity 12. In this embodiment, the first guide section 21 of the contact 2 is in clearance fit with the inner wall of the guide sleeve 4, the guide sleeve 4 forms a first guide surface when the contact 2 reciprocates, meanwhile, the second guide section 22 of the contact 2 is in contact with the lumen wall of the second lumen 12 of the contact sleeve 1 through the conductive contact element, and the lumen wall of the second lumen 12 forms a second guide surface when the contact 2 reciprocates.

In order to prevent the guide sleeve 4 from coming off during the reciprocating movement of the contact 2, as shown in fig. 1, 2 and 4, preferably, in the present embodiment, the lumen wall of the contact sleeve 1 is provided with a stopping groove 13, the guide sleeve 4 is provided with a protrusion 41 matching with the stopping groove 13, and the protrusion 41 is inserted into the stopping groove 13. The guide sleeve 4 can be effectively prevented from coming off the contact sleeve 1 by the engagement of the stopper groove 13 and the projection 41.

In order to install the guide sleeve 4 into the lumen of the contact sleeve 1, as shown in fig. 4, the protrusion 41 is located at the axial rear end of the guide sleeve 4, the sidewall of the guide sleeve 4 is provided with a plurality of furling grooves 42 along the generatrix direction, the furling grooves 42 extend from the axial rear end of the guide sleeve 4 to the axial front end, so that the end of the guide sleeve 4 provided with the protrusion 41 can be furled inwards to penetrate into the lumen of the contact sleeve 1 when being installed into the lumen of the contact sleeve 1. It should be noted that the gathering groove 42 is a non-penetrating structure, and it only opens to the middle of the guide sleeve 4 or near the axial front end, and cannot open to the axial front end face of the guide sleeve 4.

In order to improve the direction effect, preferably, uide bushing 4 is wear-resisting and self-lubricating material, for example: metals, metal and polymer (e.g., PES, PTFE) composites, and the like.

In order to facilitate the driving contact 2 to reciprocate, as shown in fig. 1, in this embodiment, a spring 6 is supported between the axial rear end of the contact 2 and the contact tail 3 to drive the contact 2 to reciprocate in the axial direction in the cavity of the contact sleeve 1, and one end of the spring 6 abuts against the contact 2 and the other end abuts against the contact tail 3. When the distance between the elastic contact body and the element matched with the elastic contact body is changed, the elastic contact body and the element can be ensured to be always in a connection state through the extension and contraction of the spring 6, and good current conduction is kept through the conductive contact piece.

Further, as shown in fig. 1 and 3, a guide post 7 extending axially along the contact sleeve 1 is disposed on one side of the contact tail 3 close to the contact 2, a blind hole 23 for inserting the guide post 7 is disposed on one side of the contact 2 close to the contact tail 3, one axial end of the spring 6 is embedded in the blind hole 23, and the other axial end of the spring is sleeved outside the guide post 7. Inlay in the blind hole 23 of contact 2 with the one end of spring 6, on the guide post 7 of contact tail 3 is located to the other end cover, can keep structural stability when contact 2 reciprocating motion.

As shown in fig. 1, a connection post 8 for mounting the snap contact in the electrical connector is connected to a side of the contact tail 3 away from the contact sleeve 1. It should be noted that the connecting column 8 may be a threaded column.

The embodiment also provides an electric connector which comprises the elastic pressing type contact body. It should be noted that a plurality of spring contacts may be included in an electrical connector, and the plurality of spring contacts may be disposed on the front portion of the electrical connector.

Example two

As shown in fig. 5 to 7, the present embodiment is different from the first embodiment in that: in this embodiment, the conductive contact member is a spring finger 9, and the spring finger 9 is sleeved on the outer periphery of the second guiding section 22 and contacts with the lumen wall of the second lumen 12 to transmit current between the contact 2 and the contact sleeve 1.

In this formula of suppressing contact body, adopt the spring to touch and indicate 9 transmission current between contact 2 and contact cover 1, can transmit the heavy current in the subspace, required installation space is little, increases the direction length between contact 2 and the contact cover 1 under the condition that does not increase the size of the formula of suppressing contact body, is favorable to reducing the possibility of jamming, reduces the probability that the signal is disconnected promptly. Meanwhile, in the elastic pressing type contact body, the spring contact fingers 9 are adopted to transmit current between the contact 2 and the contact sleeve 1, the contact force between the spring contact fingers 9 and the periphery of the contact 2 and the wall of the lumen of the contact sleeve 1 is uniform, the friction force is small, the spring contact fingers are not easy to wear, the service life is prolonged, the possibility of clamping stagnation in the service life is reduced, and the spring contact body is not easy to clamp stagnation even if being used for a long time.

In order to facilitate the installation of the spring contact finger 9, as shown in fig. 6, in the present embodiment, a contact finger installation groove 24 is formed on the outer periphery of the contact 2, and the spring contact finger 9 is embedded in the contact finger installation groove 24. It can be understood that there may be a plurality of spring contact fingers 9 to improve the current transmission effect, and a contact finger installation groove 24 is formed corresponding to each spring contact finger 9.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. The spring press type contact body is characterized in that: the contact comprises a hollow tubular contact sleeve, a contact is sleeved in the axial front part of a cavity of the contact sleeve, and the axial rear end of the contact sleeve is fixedly connected with a contact tail; a guide sleeve is sleeved between the contact and the cavity wall of the contact sleeve, the axial front end of the contact extends out of the contact sleeve, and the periphery of the contact is in clearance fit with the inner wall of the guide sleeve so as to be guided by the guide sleeve to reciprocate in the contact sleeve cavity along the axial direction; and a conductive contact piece is arranged between the contact and the contact sleeve and is respectively contacted with the periphery of the contact and the cavity wall of the contact sleeve so as to transmit current between the contact and the contact sleeve.

2. The sprung contact body of claim 1, wherein: the pipe cavity wall of the contact sleeve is provided with a stopping groove, the guide sleeve is provided with a convex part matched with the stopping groove, and the convex part is inserted into the stopping groove.

3. The sprung contact body of claim 2, wherein: the convex part is positioned at the axial rear end of the guide sleeve, the side wall of the guide sleeve is provided with a plurality of furling grooves along the generatrix direction, and the furling grooves extend from the axial rear end of the guide sleeve to the axial front end, so that one end of the guide sleeve, which is provided with the convex part, can be furled inwards to penetrate into the cavity of the contact sleeve when being installed into the cavity of the contact sleeve.

4. A snap contact according to any one of claims 1 to 3, wherein: the uide bushing is wear-resisting and self-lubricating material.

5. The sprung contact body of claim 1, wherein: the tube cavity of the contact sleeve comprises a first tube cavity and a second tube cavity which are sequentially communicated from the axial front end to the axial rear end of the contact sleeve, the inner diameter of the first tube cavity is smaller than that of the second tube cavity, and the guide sleeve is sleeved in the first tube cavity; the contact comprises a first guide section and a second guide section which are sequentially connected from the axial front end to the axial rear end of the contact, the inner walls of the first guide section and the guide sleeve are in clearance fit, the second guide section is positioned in the second tube cavity, the outer diameter of the second guide section is between the inner diameter of the guide sleeve and the inner diameter of the second tube cavity, and the conductive contact elements are respectively contacted with the periphery of the second guide section and the wall of the tube cavity of the second tube cavity.

6. The spring-loaded contact body according to claim 1 or 5, wherein: the conductive contact is a spring contact finger.

7. The sprung contact body of claim 6, wherein: contact finger mounting grooves are formed in the peripheries of the contacts, and the spring contact fingers are embedded in the contact finger mounting grooves.

8. The sprung contact body of claim 1, wherein: and a spring is supported between the axial rear end of the contact and the contact tail to drive the contact to reciprocate in the axial direction in the contact sleeve cavity.

9. The sprung contact body of claim 8, wherein: one side of the contact tail, which is close to the contact, is provided with a guide post which extends along the axial direction of the contact sleeve, one side of the contact, which is close to the contact tail, is provided with a blind hole for the guide post to insert, one axial end of the spring is embedded in the blind hole, and the other axial end of the spring is sleeved outside the guide post.

10. An electrical connector, characterized by: comprising a snap contact according to any of claims 1-9.

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