CN210744232U

CN210744232U - Spring plate

Info

Publication number: CN210744232U
Application number: CN201921779884.XU
Authority: CN
Inventors: 唐敏; 杨伟
Original assignee: JUST CONNECTOR KUNSHAN CO Ltd
Current assignee: Dongguan Alpha Electronic Technology Co.,Ltd.
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-06-12
Anticipated expiration: 2029-10-22

Abstract

A spring plate comprises a base plate, an elastic arm formed by bending and extending upwards from one end of the base plate in an inclined mode, and a contact end portion formed at the tail end of the elastic arm, wherein the projection of the contact end portion in the vertical direction is close to the free end of the base plate. The elastic sheet has a simple structure and is convenient to manufacture.

Description

Spring plate

Technical Field

The present application relates to the field of electrical connection, and more particularly, to a spring plate.

Background

The application No. 201880001956.X discloses a low-height spring plate, which comprises a substrate, a contact plate portion punched from the middle of the substrate, and a plurality of elastic bodies connected between the substrate and the contact plate portion. The height of the contact plate part is higher than that of the substrate, and the elastic body is wound around the outer edge of the contact plate part and the inner edge of the substrate in an arc shape; however, the elastic sheet of the scheme is complex to manufacture, high in manufacturing cost and low in yield.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a low-height spring plate with simple structure, easy manufacturing and low cost.

In order to solve the technical problem, the application provides an elastic sheet, which comprises a substrate, an elastic arm and a contact end part, wherein the elastic arm is formed by bending one end of the substrate and extending upwards in an inclined mode, the contact end part is formed at the tail end of the elastic arm, and the projection of the contact end part in the vertical direction is close to the free end of the substrate.

Preferably, the contact end portion is formed with a contact convex hull protruding upward by punching.

Preferably, the base plate includes a longitudinal end portion formed in a longitudinal direction, a lateral extension portion formed to extend in a lateral direction from a front end of the longitudinal end portion, a longitudinal extension portion formed to extend in the longitudinal direction from a right end of the lateral extension portion, and a lateral end portion formed at a rear end of the longitudinal extension portion.

Preferably, the elastic arm is formed to extend from the lateral end portion in the lateral left direction and obliquely upward.

Preferably, the longitudinal end portion is a free end of the substrate, and a gap exists between the projection of the longitudinal end portion and the contact end portion in the vertical direction.

Preferably, the longitudinal end is relatively parallel to and extends in a longitudinal direction and the lateral end is relatively parallel to and extends in a lateral direction.

Preferably, the elastic sheet is welded on a printed circuit board, and the longitudinal end portion, the transverse extension portion and the longitudinal extension portion are all partially welded on the printed circuit board.

Preferably, the transverse end portion and the printed circuit board are not fixed by welding.

Preferably, the projections of the longitudinal end portion, the transverse extension portion, the longitudinal extension portion, the transverse end portion and the elastic arm on the printed circuit board form an open circular arc structure.

Preferably, the elastic arm includes an upward folded portion formed by bending upward from the lateral end portion, an elastic inclined arm formed by extending upward from the upward folded portion at a larger inclination angle, and the contact end portion formed at a tip end of the elastic inclined arm.

This application shell fragment is through directly being in bend and extend to one side to form the elastic arm on the base plate, and make the base plate with the projection of elastic arm on the vertical direction forms open circular arc structure in the centre, and furthest has reduced the height of elastic arm makes the shell fragment slimming, and simple structure is convenient for make.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a perspective view of a spring plate according to the present application;

fig. 2 is a perspective view of the spring plate of the present application at another angle;

FIG. 3 is a side view of the spring plate of the present application;

fig. 4 is a perspective view of the spring plate of the present application soldered to a printed circuit board.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the present application, the X direction shown in fig. 1 is the horizontal left direction, the Y direction is the vertical front direction, and the Z direction is the vertical upper direction.

Referring to fig. 1 to 3, the spring plate of the present application includes a base plate 11, an elastic arm 12 formed by bending and extending upward from the base plate 11, and a contact convex hull 13 formed by stamping on a top end of the elastic arm 12.

The projection of the base plate 11 and the elastic arm 12 in the vertical direction forms an open arc 20. The base plate 11 includes a longitudinal end 111 formed in a longitudinal direction, a lateral extension 112 formed to extend in a lateral direction from a front end of the longitudinal end 111, a longitudinal extension 113 formed to extend in a longitudinal direction from a right end of the lateral extension 112, and a lateral end 114 formed at a rear end of the longitudinal extension 113. The elastic arm 12 is formed extending from the lateral end 114 in the lateral left direction and obliquely upward.

The elastic arm 12 includes an upward folded portion 121 formed by bending upward from the lateral end portion 114, an elastic arm 122 formed by extending upward from the upward folded portion 121 at a larger inclination angle, and a contact end portion 123 formed at a free end of the elastic arm 122. The contact convex hull 13 is a convex hull structure formed by protruding upward from the contact end 123 through punching.

The contact end 123 is close to the longitudinal end 111, and a gap 40 exists between a vertical projection of the contact end 123 and the longitudinal end 111.

As shown in fig. 3 and 4, the elastic sheet is adhered to a printed circuit board 30, and the longitudinal end 111, the transverse extension 112 and the longitudinal extension 113 are respectively provided with a solder joint for soldering with the printed circuit board 30, so that the elastic sheet is stably soldered on the printed circuit board 30 by a three-point soldering method. The transverse end portion 114 is not soldered to the printed circuit board 30, so that the elastic arm 12 connected to the transverse end portion 114 has better elastic force.

In the operating state, the contact convex hull 13 on the contact end 123 is electrically contacted from above and pressed downwards until the bottom surface of the contact end 123 is close to the printed circuit board 30. In a natural state, the distance between the upper surface of the contact convex hull 13 and the surface of the printed circuit board 30 is only 0.5 mm.

This application shell fragment is through directly being in bend and extend upwards to one side on the base plate 11 and form elastic arm 12, and make base plate 11 with the projection of elastic arm 12 on the vertical direction forms open circular arc structure in the centre, and furthest has reduced the height of elastic arm 12 makes the shell fragment is slim, and simple structure is convenient for make.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An elastic sheet is characterized by comprising a base plate, an elastic arm formed by bending and extending upwards in an inclined mode from one end of the base plate, and a contact end portion formed at the tail end of the elastic arm, wherein the projection of the contact end portion in the vertical direction is close to the free end of the base plate.

2. The spring plate of claim 1, wherein the contact end portion is formed with a contact convex hull protruding upward by punching.

3. The clip of claim 2, wherein the base plate includes a longitudinal end portion formed in a longitudinal direction, a lateral extension portion formed extending in a lateral direction from a front end of the longitudinal end portion, a longitudinal extension portion formed extending in a longitudinal direction from a right end of the lateral extension portion, and a lateral end portion formed at a rear end of the longitudinal extension portion.

4. A shrapnel as claimed in claim 3, wherein said elastic arm is formed by extending from said transverse end part along the transverse left direction and obliquely upwards.

5. A spring plate according to claim 3 or 4, wherein said longitudinal end portion is a free end of said base plate, and a gap is present between a projection of said longitudinal end portion and said contact end portion in a vertical direction.

6. An elastic sheet according to claim 5, wherein said longitudinal end portion is relatively parallel to and extends in a longitudinal direction and said lateral end portion is relatively parallel to and extends in a lateral direction.

7. The spring plate of claim 3, wherein the spring plate is soldered to a printed circuit board, and the longitudinal end, the lateral extension and the longitudinal extension are partially soldered to the printed circuit board.

8. The shrapnel of claim 7, wherein the transverse end part and the printed circuit board are not welded and fixed.

9. The shrapnel of claim 8, wherein the projections of the longitudinal end, the transverse extension, the longitudinal extension, the transverse end and the elastic arm on the printed circuit board form an open circular arc structure.

10. The clip of claim 4, wherein the resilient arms include folded-up portions bent upward from the lateral ends, resilient arms extending upward from the folded-up portions at a greater angle of inclination, and the contact ends formed at the tips of the resilient arms.