CN210576586U

CN210576586U - Moving contact structure of electric connector

Info

Publication number: CN210576586U
Application number: CN201922197532.XU
Authority: CN
Inventors: 罗扬; 万前茂; 周小波
Original assignee: Sichuan Yonggui Science and Technology Co Ltd
Current assignee: Sichuan Yonggui Science and Technology Co Ltd
Priority date: 2019-12-10
Filing date: 2019-12-10
Publication date: 2020-05-19
Anticipated expiration: 2029-12-10

Abstract

The utility model discloses a moving contact structure of an electric connector, which comprises a shell, an elastic part and a lead, wherein the elastic part and the lead are arranged in the shell, one end of the shell is fixedly connected with a tail cover, a contact which can slide relative to the shell is arranged in the other end of the shell, the outer end of the contact is provided with a contact, and the inner end of the contact is connected with the lead and is contacted with the elastic part; the electric connector is used for circuit connection of the electric connector, can replace a moving contact of an existing structure, can realize reliable contact under the conditions of impact and vibration, is stable in transmission current in the contact process, and has the advantages of reliability in connection, good conductivity, long service life and the like.

Description

Moving contact structure of electric connector

Technical Field

The application relates to the field of electric connectors, in particular to a moving contact structure of an electric connector.

Background

In a high-voltage connector of a train or a motor car, some connectors adopt a touch type connection for improving signal transmission and power transmission with high reliability during moving.

Because of its special use environment, the existing various rigidly connected connectors cannot work reliably in such environment, because the train or motor car has a very large interaction force between two cars during operation, the conventional electrical connector is damaged under such a large pulling force, and the adopted sliding connection mode may cause connection electric shock and connection end falling under the action force, so that a contact structure with elastic force is required.

The existing contact structure solves the contact problem, but installation and connection of cables in the contact process are always a problem, the whole structure is sealed, the cables cannot be replaced once being connected, and the technical difficulty in the field is always how to ensure effective and reliable connection of the cables between the contacts and the rear end.

Disclosure of Invention

The object of the present application is to provide an electrical connector moving contact structure for solving the problem of a reliable connection installation of the contacts and cables therein.

In order to achieve the purpose, the following technical scheme is adopted in the application:

a movable contact structure of an electric connector comprises a shell, an elastic piece and a lead, wherein the elastic piece and the lead are arranged in the shell, one end of the shell is fixedly connected with a tail cover, a contact which can slide relative to the shell is arranged in the other end of the shell, the outer end of the contact is provided with a contact point, and the inner end of the contact point is connected with the lead and is contacted with the elastic piece.

In the technical scheme, the contact is in interference fit with the contact.

In the technical scheme, the contact is fixed by a pin after being connected with the contact.

In the above technical scheme, the elastic member is a pressure spring, one end of the elastic member is connected to the tail cover, and the other end of the elastic member is in contact with the contact.

In the above technical solution, both ends of the wire are respectively connected to the contact and the tail cap by crimping.

In the technical scheme, the lead penetrates through the spring coil of the pressure spring, and the lead is in a free state in the spring coil.

In the technical scheme, the inner part of the shell body after the contact and the tail cover are connected is provided with the sealed cavity, and the elastic piece and the lead are arranged in the sealed cavity.

In the above technical solution, the contact and the housing are in a separable structure.

In the above technical solution, a bushing is provided between the contact and the housing.

In the technical scheme, the bushing is an insulating bushing, and the insulating bushing, the contact and the contact are fixed into a whole through a pin.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

the application adopts the technologies of conducting wire current transmission, tail end thread fixing and the like, not only can realize reliable contact under the conditions of impact and vibration, but also has stable current transmission in the contact process, and the whole product has the advantages of good conductivity, firm connection and the like;

the electric connector is used for circuit connection of the electric connector, can replace a moving contact of an existing structure, can realize reliable contact under the conditions of impact and vibration, is stable in transmission current in the contact process, has the advantages of reliable connection, good conductivity, long service life and the like, and has wide market prospect.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view in half section of the structure of the present application;

fig. 2 and 3 are partially enlarged schematic views of the present application;

wherein: 1 is a contact, 2 is a contact, 3 is a housing, 4 is a lead, 5 is a gasket, 6 is a connecting rod, 7 is a tubular terminal, 8 is a tail cover, 9 is a bushing, 10 is a compression spring, and 11 is a pin.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

As shown in fig. 1 to 3, the present embodiment includes a connecting rod 6 for supporting, and one end of the connecting rod 6 is integrally connected to the housing 3 by a screw connection. The shell 3 is of a cavity structure, one end of the shell is connected with a tail cover 8 through threads, and the other end of the shell 3 is used for arranging the contact 2.

In this embodiment, in order to arrange the compression spring 10 and the lead wire 4 inside the housing, the lead wire 4 is arranged inside the compression spring through the coils of the compression spring 10, and one end of the lead wire 4 is connected to the tubular terminal 7 by crimping and then led out from the outside. The other end of the wire 4 is used for connecting the contact 2.

In the embodiment, a separation structure is adopted between the contact 2 and the housing 3, the contact 2 and the housing 3 can be separated, one end of the wire 4 is connected to one end of the contact 3 in a crimping mode, the other end of the contact 3 is connected with the contact 1 in an interference fit mode, the contact 2 and the contact 1 are fixed in a pin 11 mode, and the contact 1 and the contact 2 are prevented from loosening in the using process.

The present embodiment is different from the prior art in that a separation structure is adopted between the contact 2 and the housing 3, and during the actual installation process, one end of the wire 4 is firstly connected to the end of the contact through a crimping mode, and then the contact is directly inserted into one end of the housing 3. The problem that in the prior art, a through hole needs to be drilled at one end of the contact, and the other end of the contact is connected with the wire and the contact in a solder dropping mode is avoided; the defects that the process is difficult to realize and the contact is unreliable in the prior art are overcome.

The present implementation also solves the problem of reliable connection between the contact and the mating point, and therefore it is necessary to ensure that the contact and the mating point must be always in contact and cannot be separated. Therefore, the contact in the embodiment is always subjected to the elastic acting force of the compression spring, the spring exerts the elastic force on the contact to push against the contact, and the larger the acting force exerted on the contact by the contact point is, the larger the reaction force of the compression spring is. In order to ensure the implementation, a relative movement allowance must be provided between the contact and the housing, so that a bushing 9 is arranged between the housing 3 and the contact 2, the bushing 9 is made of insulating plastic, and the contact 2 and the bushing 9 are in clearance fit, so that the problem of expansion and clamping stagnation cannot occur.

Because the contact 2 is contracted by the acting force, the wire 4 connecting the contact and the end cover cannot be tightened, otherwise, the wire can be broken by the acting force, so that the wire 4 is in a free state in a static state, and the stable transmission of current can be ensured under the action of the compression spring 10 even if the contact is subjected to vibration and impact in the working process.

Because the embodiment needs to be used for axial reciprocating motion and low-speed rotating motion under a dynamic condition, a cavity in the shell needs to be sealed, the moving contact and the electric connector are sealed by the sealing gasket 5, the tail cover 8 and the shell 2 are in threaded connection, and a threaded locking glue layer is arranged at the threaded connection position to perform anti-loosening treatment on the tail cover. Under static conditions, liquid and gaseous media can be prevented from entering the interior of the electrical connector; under the dynamic condition, the sealing device also has the characteristics of good sealing property, heat resistance, cold resistance and oil resistance, and can effectively improve the reliability of the moving contact.

The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.

Claims

1. The utility model provides an electric connector movable contact structure, includes the casing, sets up elastic component and wire in the casing, the one end and the tail-hood fixed connection of casing, its characterized in that: a contact head which can slide corresponding to the shell is arranged in the other end of the shell, a contact point is arranged at the outer end of the contact head, and the inner end of the contact head is connected with the wire and is contacted with the elastic piece.

2. An electrical connector movable contact structure as claimed in claim 1, wherein said contact is an interference fit with the contact.

3. An electrical connector moving contact structure as claimed in claim 2 wherein said contacts are pinned after connection to the contacts.

4. An electrical connector moving contact structure as claimed in claim 1 wherein said resilient member is a compression spring having one end connected to the tail cap and the other end in contact with the contact.

5. An electrical connector moving contact structure as in claim 4 wherein the two ends of said conductor are each connected to the contact and tail cap by crimping.

6. An electrical connector moving contact structure as in claim 5 wherein said wire is threaded through the coils of the compression spring and the wire is free within the coils.

7. An electrical connector moving contact structure as claimed in claim 1 wherein the housing behind the connecting contact and tail cap is sealed with a cavity, the resilient member and the conductive wire being disposed within the cavity.

8. An electrical connector movable contact structure as in claim 1 wherein said contact is of separable construction from the housing.

9. An electrical connector moving contact structure as claimed in claim 1 or 8 wherein a bush is provided between the contact and the housing.

10. An electrical connector moving contact structure as claimed in claim 9 wherein said bushing is an insulating bushing and the insulating bushing, contact and contact are held together by a pin.