CN112864669A

CN112864669A - Elastic contact structure of socket contact

Info

Publication number: CN112864669A
Application number: CN202110045046.5A
Authority: CN
Inventors: 王祥; 严华; 陈彬
Original assignee: Jiangsu Tongling Technology Co ltd
Current assignee: Jiangsu Tongling Technology Co ltd
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-05-28

Abstract

The invention provides an elastic contact structure of a socket contact piece, which is characterized in that a rotary block is arranged on the outer side of the ridge part of an insertion piece, a movable contact piece is arranged on the outer side of the rotary block, a static contact piece is arranged on the outer side of the movable contact piece, the upper end of the rotary block is pivoted and fixed, a convex stress part is arranged between the upper end and the lower end of the rotary block and close to one side of the ridge part, and the lower end of the rotary block extends out in the direction; the movable contact piece is a metal sheet body and is provided with an elastic arm formed by bending and extending the horizontal bottom upwards, the top end of the elastic arm is abutted against one side of the lower end of the rotary block far away from the ridge part, and a movable contact is arranged between the upper end and the lower end of the elastic arm; the static contact is a metal sheet body, the static contact is provided with two support legs which are arranged in a separated mode, a suspension part is arranged between the two support legs, and static contacts are arranged on the suspension part. The invention can realize the elastic contact between the contact pieces, thereby avoiding the rigid impact, improving the operation hand feeling of inserting the insertion piece and prolonging the service life of the socket.

Description

Elastic contact structure of socket contact

Technical Field

The invention relates to a contact structure in a socket.

Background

The socket is the device that supplies the plug to insert the electricity of getting, and it has the inserted slot that can supply the inserted sheet of plug to insert, has arranged rotatory piece, movable contact and static contact in the slot, and when the inserted sheet was inserted, rotatory piece was driven by the inserted sheet and takes place rotatoryly, and the movable contact is stirred to the rotatory piece again, makes movable contact and static contact form the electricity and connects to accomplish and get the work of electricity.

However, in the existing socket, the moving stroke of the rotating block and the moving contact piece is limited, the static contact piece is generally rigidly mounted, so that the moving contact piece and the static contact piece are rigidly collided, electric sparks are easy to occur, the moving contact piece is easy to fatigue, the contact pressure of the moving contact piece and the static contact piece is smaller and smaller after long-time use, and the problem of power connection failure can occur in serious cases.

Disclosure of Invention

The invention aims to provide an elastic contact structure of a socket contact piece, which solves the problem of rigid contact between a movable contact piece and a static contact piece.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides an elastic contact structure of socket contact has arranged in the ridge outside of inserted sheet and has revolved the piece, revolves the piece outside and has arranged the movable contact spring, and the stationary contact, its characterized in that have been arranged in the movable contact spring outside:

the upper end of the rotary block is pivoted and fixed, a convex stress part is arranged between the upper end and the lower end of the rotary block and close to one side of the ridge, and the lower end of the rotary block extends out in the direction far away from the ridge;

the movable contact piece is a metal sheet body and is provided with an elastic arm formed by bending and extending a horizontal bottom upwards, the top end of the elastic arm is abutted against one side of the lower end of the rotary block, which is far away from the ridge part, the elastic arm can push the lower end of the rotary block to be abutted against the ridge part in a free state, and a movable contact point is arranged between the upper end and the lower end of the elastic arm;

the static contact is a metal sheet body, the static contact is provided with two support legs which are arranged in a separated mode, a suspended part is arranged between the two support legs, a static contact point is arranged on the suspended part, and the two support legs are supported so that the suspended part can generate elastic deformation when being stressed.

The elastic contact structure of socket contact, wherein: the movable contact is arranged between the upper end and the lower end of the elastic arm and close to the midpoint.

The elastic contact structure of socket contact, wherein: the supporting legs are of a corrugated structure.

The elastic contact structure of socket contact, wherein: in the inserted state of the inserting sheet, the distance between the stress part of the rotating block and the inserting direction from the contact point of the inserting sheet to the pivot point of the rotating block is called as a first distance, the distance between the pivot point of the rotating block and the inserting direction from the lower end of the rotating block is called as a second distance, and the ratio of the first distance to the second distance is between 0.25 and 0.35.

The elastic contact structure of socket contact, wherein: the second distance is between 8-10 mm.

Compared with the prior art, the invention has the beneficial effects that: by increasing the swing range of the elastic arm, increasing the moving distance of the movable contact point on the elastic arm and increasing the elastic movement margin of the static contact point on the static contact piece, the invention can realize the elastic contact between the contact pieces, thereby avoiding rigid impact, improving the operation hand feeling of inserting the insertion piece and prolonging the service life of the socket.

Drawings

Fig. 1 is an exploded view of an electric shock protection safety socket.

Fig. 2 is a perspective view of the contact structure of the resilient contact (only one knob is shown).

Fig. 3 is a cross-sectional structural view of the resilient contact structure prior to insertion of the blade.

Fig. 4 is a cross-sectional structural view of the resilient contact structure after insertion of the blade.

Description of reference numerals: an upper cover 1; a middle frame 2; a rear cover 3; a lower cover 4; a rotating block 5; a pivot point 51; the force receiving portion 52; a plug-and-hold 6; a movable contact piece 7; the elastic arm 71; a movable contact 72; a static contact piece 8; legs 81; a suspended portion 82; a stationary contact 83; an inserting sheet 9; a ridge 91; a first distance h; the second distance H.

Detailed Description

As shown in fig. 1, the anti-electric shock safety socket comprises an upper cover 1, a middle frame 2, a rear cover 3 and a lower cover 4, wherein the upper cover 1 is provided with jacks for inserting plug-in blades of a plug, two sides of each jack are respectively pivoted with a rotary block 5, the middle frame 2 is fixedly provided with a plug grip 6, a movable contact 7 and a static contact 8 are fixedly arranged between the rear cover 3 and the middle frame 2, and the lower cover 4 is correspondingly covered with the upper cover 1.

As shown in fig. 2-4, the inserting sheet 9 has two plane portions arranged oppositely and two ridge portions 91 arranged oppositely, the inserting grip 6 can clamp the two plane portions of the inserting sheet 9, and one rotary block 5 is arranged outside each ridge portion 91 of the inserting sheet 9; the rotary block 5 is integrally C-shaped, the upper end of the rotary block is pivoted with the upper cover 1 through a pivot point 51 and can swing, a convex stress part 52 is arranged between the two ends and close to one side of the ridge part 91, and the lower end of the rotary block 5 extends out in the direction far away from the ridge part 91;

the movable contact piece 7 is a metal sheet body and is provided with an elastic arm 71 which is formed by bending and extending upwards from the horizontal bottom, the top end of the elastic arm 71 is abutted against one side of the lower end of the rotary block 5 away from the ridge part 91, the elastic arm 71 can push the lower end of the rotary block 5 to be abutted against the ridge part 91 in a free state, and a movable contact 72 is arranged between the upper end and the lower end of the elastic arm 71 and is close to the midpoint position;

the static contact piece 8 is a metal sheet body, and has two spaced legs 81, a suspension part 82 is arranged between the two legs 81, and a static contact 83 is arranged on the suspension part 82, in this embodiment, the legs 81 have a corrugated structure and abut against the middle frame 2, so that the suspension part 82 can generate elastic deformation when being pressed;

as shown in fig. 3, before the insertion piece 9 is inserted, the elastic force of the elastic arm 71 pushes the lower end of the knob 5 to a position abutting against the ridge 91; as shown in fig. 4, after the insertion sheet 9 is inserted, the ridge 91 of the insertion sheet 9 interferes with the force-receiving portion 52 of the rotary block 5, so that the rotary block 5 rotates around the pivot point 51 at the upper end, the lower end of the rotary block 5 swings in the direction away from the ridge 91, the upper end of the elastic arm 71 swings to the limit position in the direction away from the ridge 91, the movable contact 72 on the elastic arm 71 moves along with the rotary contact and contacts with the stationary contact 83 on the stationary contact 8, and during the contact process, the rotary block 5 of the stationary contact 8 can elastically deform, thereby avoiding rigid collision.

In order to increase the movable range of the elastic arm 71 of the movable contact 7, the length ratio of the upper portion and the lower portion of the rotating block 5 is adjusted according to the present invention, as shown in fig. 4, when the inserting sheet 9 is inserted, the inserting direction distance between the contact point of the force-receiving portion 52 of the rotating block 5 and the inserting sheet 9 and the pivot point 51 of the rotating block 5 is referred to as a first distance H, and the inserting direction distance between the pivot point 51 of the rotating block 5 and the lower end of the rotating block 5 is referred to as a second distance H, and the ratio of the first distance H to the second distance H is between 0.25 and 0.35. In addition, the second distance H is between 8 and 10 mm.

With the arrangement, by increasing the swing range of the elastic arm 71, increasing the movement distance of the movable contact 72 on the elastic arm 71 and increasing the elastic movement margin of the stationary contact 83 on the stationary contact 8, the elastic contact between the contacts can be realized, so that the rigid impact is avoided, the operation hand feeling of inserting the insertion piece 9 can be improved, and the service life of the socket is prolonged.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides an elastic contact structure of socket contact has arranged in the ridge outside of inserted sheet and has revolved the piece, revolves the piece outside and has arranged the movable contact spring, and the stationary contact, its characterized in that have been arranged in the movable contact spring outside:

2. The resilient contact structure for receptacle contacts of claim 1, wherein: the movable contact is arranged between the upper end and the lower end of the elastic arm and close to the midpoint.

3. The resilient contact structure for receptacle contacts of claim 1, wherein: the supporting legs are of a corrugated structure.

4. The resilient contact structure for receptacle contacts of claim 1, wherein: in the inserted state of the inserting sheet, the distance between the stress part of the rotating block and the inserting direction from the contact point of the inserting sheet to the pivot point of the rotating block is called as a first distance, the distance between the pivot point of the rotating block and the inserting direction from the lower end of the rotating block is called as a second distance, and the ratio of the first distance to the second distance is between 0.25 and 0.35.

5. The resilient contact structure for receptacle contacts of claim 4, wherein: the second distance is between 8-10 mm.