WO2024109476A1

WO2024109476A1 - Conduction control mechanism for push-button switch

Info

Publication number: WO2024109476A1
Application number: PCT/CN2023/128178
Authority: WO
Inventors: 吴福喜; 陶崇阳
Original assignee: 东莞市凯华电子有限公司
Priority date: 2022-11-23
Filing date: 2023-10-31
Publication date: 2024-05-30
Also published as: CN218602310U

Abstract

A conduction control mechanism for a push-button switch, the conduction control mechanism comprising a base (1), a conduction assembly (2) arranged on the base (1), a pressing member (3) arranged on the base (1), and a movable block (4) arranged between the pressing member (3) and the conduction assembly (2), wherein an accommodation recess (11) is formed in the base (1); the conduction assembly (2) is arranged in the accommodation recess (11); and a movement through-opening (13) is formed in the middle of the side wall of the accommodation recess (11) close to the pressing member (3), and the movable block (4) is movably arranged in the movement through-opening (13). In the conduction control mechanism for a push-button switch, when the pressing member (3) moves up and down and acts on the movable block (4), the reaction force on the pressing member (3) is at the middle of the side edge, which can effectively prevent the pressing member (3) from rotating, turning, or skewing and then prevent a button cap on the pressing member (3) from skewing, so that the push-button switch can be used normally.

Description

A conduction control mechanism for a key switch

Technical Field

The utility model relates to the field of key switches, in particular to a conduction control mechanism for key switches.

Background technique

In the existing push button switch, in order to realize the conduction function of the movable and static plate conduction components, a movable block is arranged between the guide core and the conduction component. By moving the guide core up and down, the movable block is prompted to move between the movable plate close to the conduction component and the movable plate far away from the conduction component, so as to control the contact conduction and separation disconnection between the movable plate and the static plate.

However, in the existing key switch structure, the conducting component is arranged in the receiving groove on the base, and the movable block is usually arranged on the side wall of the receiving groove at a position closer to the edge, and the movable block is located on the side farther away from the guide core. When the guide core moves up and down, the guide core acts on the movable block, and the movable block applies a corresponding reaction force to the side of the guide core, causing the guide core to rotate, resulting in a certain angle and skew, thereby causing the key cap covering the guide core to appear skew, affecting the normal use of the key switch.

Utility Model

In view of the above-mentioned deficiencies, the purpose of the utility model is to provide a conduction control mechanism for a push button switch. When the pressing piece moves up and down to act on the movable block, the reaction force received by the pressing piece is in the middle position of the side. Thus, the pressing piece can be effectively prevented from rotating, turning, and skewing. The keycap covering the pressing piece will not be skewed either, and the push button switch can be used normally.

The technical solution adopted by the utility model to achieve the above-mentioned purpose is:

A conduction control mechanism for a push button switch includes a base, a conduction component arranged on the base, a pressing piece arranged on the base, and a movable block arranged between the pressing piece and the conduction component. A receiving groove is formed on the base, and the conduction component is arranged in the receiving groove. It is characterized in that a movable through-hole is formed in the middle position of the side wall of the receiving groove close to the pressing piece, and the movable block is movably arranged on the movable through-hole.

As a further improvement of the utility model, a pressing protrusion is provided at a transverse middle position of one side of the pressing member close to the conducting component, and the pressing protrusion is located at the side of the movable block.

As a further improvement of the utility model, an extension portion for supporting the movable block is protruding from the side edge of the movable through opening, and the extension portion extends into the accommodating groove.

As a further improvement of the utility model, a widened limiting portion located on the extension portion is provided at the end of the movable block.

As a further improvement of the utility model, an action portion is formed on the side of the widened limiting portion facing the conducting component.

As a further improvement of the present invention, the conduction component includes a static piece arranged in the receiving groove, and a dynamic piece arranged in the receiving groove and located on the side of the static piece, wherein the movable block is located on the side of the dynamic piece.

As a further improvement of the present invention, a return spring is arranged between the base and the pressing member.

The beneficial effect of the utility model is as follows: by arranging the movable block in the middle position of the side wall of the accommodating groove on the base, since the pressing piece is located in the center position of the base, the movable block is correspondingly located in the center position of the side of the pressing piece. When the pressing piece moves up and down to act on the movable block, the reaction force received by the pressing piece is in the middle position of the side. Therefore, the pressing piece can be effectively prevented from rotating, turning, and skewing, and the key cap covering the pressing piece will not be skewed either, and the key switch can be used normally.

The above is an overview of the technical solution of the utility model. The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the utility model;

Fig. 2 is an exploded view of the utility model;

Figure 3 is a schematic diagram of the structure of the base in the utility model;

FIG. 4 is a schematic diagram of the structure in which the movable block is arranged on the base in the utility model.

Detailed ways

In order to further explain the technical means and functions adopted by the utility model to achieve the predetermined purpose, the specific implementation mode of the utility model is described in detail below in combination with the accompanying drawings and preferred embodiments.

Please refer to Figures 1 to 4. An embodiment of the utility model provides a conduction control mechanism for a push switch, including a base 1, a conduction component 2 arranged on the base 1, a pressing member 3 arranged on the base 1, and a movable block 4 arranged between the pressing member 3 and the conduction component 2. A receiving groove 11 is formed on the base 1, and the conduction component 2 is arranged in the receiving groove 11. A movable opening 13 is formed in the middle position of a side wall 12 of the receiving groove 11 close to the pressing member 3. The movable block 4 is movably arranged on the movable opening 13, so that the movable block 4 is located in the middle position of the side wall 12 of the receiving groove 11. By setting the movable block 4 in the middle position of the side wall 12 of the accommodating groove 11 on the base 1, since the pressing member 3 is located in the center position of the base 1, the movable block 4 is correspondingly located in the center position of the side of the pressing member 3. When the pressing member 3 moves up and down to act on the movable block 4, the reaction force received by the pressing member 3 is in the middle position of the side. Therefore, the pressing member 3 can be effectively prevented from rotating, turning, and skewing. The key cap covering the pressing member 3 will not be skewed, and the key switch can be used normally.

In this embodiment, a pressing protrusion 31 is provided at the lateral middle position of one side of the pressing member 3 close to the conducting component 2, the pressing protrusion 31 is located at the side of the movable block 4, and an inclined surface 311 is formed on the side of the pressing protrusion 31. The pressing member 3 acts on the movable block 4 through the pressing protrusion 31 to exert an effect on the movement of the movable block 4. Since the pressing protrusion 31 is provided at the lateral middle position of the side of the pressing member 3, and the movable block 4 is also located at the center position of the side of the pressing member 3, the point of action of the pressing member 3 on the movable block 4 is located at the center position of the side of the pressing member 3, and the reaction force received by the pressing member 3 is at the middle position of the side, thereby effectively preventing the pressing member 3 from rotating, turning, or tilting.

In order to make the movable block 4 move better, as shown in FIG3 and FIG4, an extension portion 131 for supporting the movable block 4 is protruded from the side of the movable opening 13, and the extension portion 131 extends into the accommodating groove 11. Due to the addition of the extension portion 131, the support for the movable block 4 is lengthened, which is conducive to the movable block 4 being able to trigger the conduction and disconnection functions of the conduction component 2 more accurately.

In order to prevent the movable block 4 from moving away from the movable opening 13, as shown in Figure 4, a widened limiting portion 41 located on the extension portion 131 is provided at the end of the movable block 4, and the widened limiting portion 41 limits the movable block 4 on the movable opening 13, and can only move back and forth on the movable opening 13 to trigger the conduction and disconnection functions of the conduction component 2.

At the same time, an action portion 411 is formed on the side of the widened limit portion 41 facing the conducting component 2, as shown in Fig. 4. The action portion 411 acts on the conducting component 2 to accurately trigger the conducting and disconnecting functions of the conducting component 2.

In this embodiment, as shown in FIG. 1 and FIG. 2 , the conducting component 2 includes a static piece 21 disposed in the receiving groove 11 , and a dynamic piece 22 disposed in the receiving groove 11 and located on the side of the static piece 21 , wherein the movable block 4 is located on the side of the dynamic piece 22 . When the pressing piece 3 is not pressed downward, the pressing protrusion 31 of the pressing piece 3 pushes the movable block 4 toward the conducting component 2, so that the movable block 4 pushes the movable sheet 22 in the direction away from the static sheet 21, and the movable sheet 22 is deformed, so that the moving contact 221 on the movable sheet 22 is separated from the static contact 211 on the static sheet 21, and the conducting component 2 is disconnected; when the pressing piece 3 is pressed downward, the pressing protrusion 31 moves downward with the pressing piece 3, and when the movable block 4 encounters the inclined surface 311 of the pressing protrusion 31, combined with the elastic restoring force of the movable sheet 22, the movable block 4 is prompted to gradually move to the inclined surface 311 of the pressing protrusion 31, and the force of the movable block 4 on the movable sheet 22 disappears, and the movable sheet 22 moves in the opposite direction and resets, so that the moving contact 221 on the movable sheet 22 contacts the static contact 211 on the static sheet 21, and the conducting component 2 is conducted.

In order to enable the pressing member 3 to be pressed repeatedly, in this embodiment, a return spring 5 is arranged between the base 1 and the pressing member 3 , and the return spring 5 provides elastic restoring force for the pressing member 3 .

The above is only a preferred embodiment of the present utility model and does not limit the technical scope of the present utility model. Therefore, other structures obtained by adopting the same or similar technical features as the above-mentioned embodiments of the present utility model are all within the protection scope of the present utility model.

Claims

A conduction control mechanism for a push button switch includes a base, a conduction component arranged on the base, a pressing piece arranged on the base, and a movable block arranged between the pressing piece and the conduction component. A receiving groove is formed on the base, and the conduction component is arranged in the receiving groove. It is characterized in that a movable through-hole is formed in the middle position of the side wall of the receiving groove close to the pressing piece, and the movable block is movably arranged on the movable through-hole.
The conduction control mechanism for a push switch according to claim 1 is characterized in that a pressing protrusion is provided at a lateral middle position of one side of the pressing member close to the conduction component, and the pressing protrusion is located on the side of the movable block.
The conduction control mechanism for a push switch according to claim 1 is characterized in that an extension portion for supporting the movable block is protruding from the side edge of the movable through-opening, and the extension portion extends into the accommodating groove.
The conduction control mechanism for a push switch according to claim 3 is characterized in that a widened limiting portion located on the extension portion is provided at the end of the movable block.
The conduction control mechanism for a push switch according to claim 4, characterized in that an action portion is formed on the side of the widened limit portion facing the conduction component.
The conduction control mechanism for a push switch according to claim 1 is characterized in that the conduction component includes a static piece arranged in the receiving groove, and a movable piece arranged in the receiving groove and located on the side of the static piece, wherein the movable block is located on the side of the movable piece.
The conduction control mechanism for a push button switch according to any one of claims 1 to 6, characterized in that a return spring is provided between the base and the pressing member.