Key module and keyboard

Abstract

The key module comprises a key cap, an elastic connecting piece, a scissor foot, a thin film circuit board and a bottom plate, the two ends of the elastic connecting piece are connected with the two side edges of the upper end of the scissor foot respectively, and the bottom of the key cap is provided with a soft rubber column used for abutting against a conduction point on the thin film circuit board when the key cap is pressed. When the key cap is pressed to move downwards, the soft rubber column on the key cap is pressed on the conducting point of the thin film circuit board, so that the circuit is conducted, the force for pressing the key cap is released, the elastic connecting piece pulls the scissor foot to rebound, and the key cap moves upwards to be lifted. The elastic connecting piece can assist the scissor foot in rapidly rebounding, prolong the service life of the scissor foot and improve the pressing hand feeling, meanwhile, the soft rubber column replaces the conduction function of a traditional elastic element, more scissor foot reinforcing mechanism space is reserved, the soft rubber column is made of soft materials, and the elastic connecting piece is not prone to deformation. In the pressing process, the thin film circuit board is not prone to being damaged, and the service life of the thin film circuit board is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the field of keyboard keys, in particular to a key module and a keyboard. Background Art

[0002] Currently in the keyboard key module structure, for example, a key structure disclosed in the invention patent with Chinese patent publication number CN110571084A includes a base plate, a keycap and two brackets (equivalent to scissor feet) connected between the base plate and the keycap. The keycap can move up and down relative to the base via the two brackets. During long-term use, the rebound sensitivity of the scissor feet is reduced. At the same time, due to the setting of the central elastic element, the reinforcement space of the scissor feet on the base plate is small. Utility Model Content

[0003] Purpose of the utility model: The utility model aims to provide a key module and keyboard with fast and sensitive rebound, large scissor reinforcement space, and not easy to crush the film circuit board.

[0004] Technical solution: The key module and keyboard of the utility model include a keycap, an elastic connector, a scissor leg, a thin film circuit board and a base plate. The two ends of the elastic connector are respectively connected to the two side edges of the upper end of the scissor leg. The bottom of the keycap is provided with a soft rubber column for resisting the conduction point on the thin film circuit board when pressed.

[0005] Furthermore, a scissor foot fixing seat is provided on the bottom plate.

[0006] Furthermore, the soft rubber column includes an upper rubber column and a lower rubber column, the upper rubber column is hard rubber and the lower rubber column is soft rubber, the upper rubber column and the key cap are integrally formed, and the upper rubber column and the lower rubber column are double-color formed.

[0007] Furthermore, the elastic connecting member is a spring with bent parts at both ends, and the bent parts respectively hook the two side edges of the upper end of the scissor legs.

[0008] Furthermore, the scissor feet are butterfly-shaped scissor feet.

[0009] Furthermore, there are a plurality of soft plastic columns, each corresponding to the conduction points on the thin film circuit board.

[0010] Furthermore, the soft rubber column and the key cap are fixedly connected by any one of two-color molding, buried injection molding, and adhesive bonding.

[0011] A keyboard, the keys of which adopt the key module structure as described above.

[0012] Working principle: When the keycap is pressed and moves downward, the soft rubber column on the keycap presses on the conduction point of the thin film circuit board, making the circuit conductive. When the force pressing the keycap is released, the elastic connector pulls the scissor foot to rebound, and the keycap moves upward and lifts up.

[0013] Beneficial effects: Compared with the prior art, the utility model has the following significant advantages: (1) The utility model is provided with an elastic connector at the top of the scissor leg, which can assist the scissor leg to rebound quickly, extend the service life of the scissor leg, and improve the pressing feel. (2) The utility model replaces the conduction function of the traditional elastic element with a soft rubber column, leaving more space for the scissor leg reinforcement mechanism. At the same time, the soft rubber column is made of a soft material, which is not easy to damage the thin film circuit board during the pressing process, effectively extending the service life of the thin film circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural assembly diagram of the utility model;

[0015] Figure 2 It is an overall schematic diagram of the utility model;

[0016] Figure 3 It is a schematic diagram of the back structure of the key cap of the utility model;

[0017] Figure 4 This is a first example diagram of the soft rubber column of the utility model;

[0018] Figure 5 This is a second example diagram of the soft rubber column of the present utility model. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is further described below in conjunction with the accompanying drawings.

[0020] Example 1

[0021] like Figure 1-4 As shown, a key module includes a keycap 1, an elastic connector 2, a scissor foot 3, a thin film circuit board 4 and a bottom plate 5, the two ends of the elastic connector 2 are respectively connected to the two side edges of the upper end of the scissor foot 3, a soft rubber column 7 is provided at the bottom of the keycap 1 for resisting the conduction point on the thin film circuit board 4 when pressed, a scissor foot fixing seat 5 is provided on the bottom plate 5, the scissor foot 3 is installed on the scissor foot fixing seat 5, the elastic connector 2 is a spring with bent parts at both ends, the bent parts respectively hook the two side edges of the upper end of the scissor foot 3, the scissor foot 3 is a butterfly scissor foot, and the soft rubber column 7 and the keycap 1 are formed in two colors.

[0022] When the keycap 1 is pressed and moved downward, the soft rubber column 7 at the bottom of the keycap 1 will press on the conduction point of the thin film circuit board 4 to make the circuit conductive. When the force pressing the keycap 1 is released, the elastic connector 2 will pull the scissor foot 3 to rebound, and the keycap 1 will move upward and lift up.

[0023] Example 2

[0024] like Figure 5As shown, the difference between this embodiment and embodiment 1 is that the soft rubber column 7 includes an upper rubber column 71 and a lower rubber column 72, the upper rubber column 71 is hard rubber, and the lower rubber column 72 is soft rubber, the upper rubber column (71) and the keycap 1 are integrally formed, and the upper rubber column 71 and the lower rubber column 72 are double-color formed.

Claims

1. A key module, comprising a key cap (1), a scissor foot (3), a thin film circuit board (4) and a bottom plate (6), characterized in that: It also comprises an elastic connecting member (2), the two ends of the elastic connecting member (2) being respectively connected to the two sides of the upper end of the scissor leg (3), and the bottom of the keycap (1) is provided with a soft rubber column (7) for abutting against the conduction point on the thin film circuit board (4) when pressed.

2. The key module according to claim 1, characterized in that: A scissor foot fixing seat (5) is provided on the bottom plate (6).

3. The key module according to claim 1, characterized in that: The soft rubber column (7) comprises an upper rubber column (71) and a lower rubber column (72), the upper rubber column (71) is hard rubber, and the lower rubber column (72) is soft rubber, the upper rubber column (71) and the key cap (1) are integrally formed, and the upper rubber column (71) and the lower rubber column (72) are double-color formed.

4. The key module according to claim 1, characterized in that: The elastic connecting member (2) is a spring with bent portions at both ends, and the bent portions respectively hook onto the two side edges of the upper ends of the scissor legs (3).

5. The key module according to claim 1, characterized in that: The scissor feet (3) are butterfly-shaped scissor feet.

6. The key module according to claim 1, characterized in that: A plurality of soft rubber columns (7) are provided, each corresponding to a conduction point on the thin film circuit board (4).

7. The key module according to claim 4, characterized in that: The soft rubber column (7) and the key cap (1) are fixedly connected by using any one of two-color molding, injection molding, and adhesive bonding.

8. A keyboard, characterized in that: The key adopts the key module structure as described in any one of claims 1-7.

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