Novel magnetic axis key switch

Abstract

The utility model discloses a novel magnetic axis key switch and relates to a Hall induction type magnetic axis key switch. Comprising a plastic shell with a key shaft hole, the shell is integrally formed, and the key shaft hole extends inwards to form a key shaft cavity; the key shaft further comprises a plastic key shaft body located in the key shaft cavity, a magnet bin is arranged at the bottom of a shaft body part of the key shaft body, and the magnet is fixed in the magnet bin. A spring groove is formed in the periphery of the magnet bin, the cavity bottom of the key shaft cavity extends upwards to be provided with a spring enclosure, and the return spring can be arranged in the spring enclosure. Through the integrated structural design of the shell, the use of assembly parts can be reduced, dislocation is prevented, the use hand feeling is enhanced, and the parts are easy and convenient to assemble. Therefore, the manufacturing cost can be reduced, and the product competitiveness can be enhanced.

Description

Technical Field

[0001] The utility model discloses a novel magnetic axis key switch, which relates to the technical field of keys for data input of electronic equipment, in particular to a key switch used for a keyboard of a computer input device, in particular to a Hall induction type magnetic axis key switch. Background Art

[0002] Conventional Hall-effect inductive key switches have the advantages of high stability, long service life, and high safety, and are receiving increasing attention. However, the existing Hall-effect inductive key switches are assembled by snapping together the upper and lower shells, which has strict requirements on the installation position of the magnet and the pressing stroke of the shaft core, and the assembly is complicated, labor-intensive, inefficient, and costly. Utility Model Content

[0003] The purpose of the utility model is to provide a novel magnetic axis push button switch, which can realize simple assembly through the integrated structural design of the shell, effectively reduce the manufacturing cost and enhance the product competitiveness.

[0004] The technical solution of the utility model is a novel magnetic axis key switch, comprising a plastic shell 1 with a key shaft hole 11, and a key shaft cavity 12 formed by the key shaft hole 11 extending inwardly; further comprising a plastic key shaft body 2 located in the key shaft cavity 12, a pressing portion 21 is provided on the top of the key shaft body 2, the pressing portion 21 extends out of the key shaft hole 11, and a shaft body portion 22 of the key shaft body 2 is located in the key shaft cavity 12 and can move up and down; further comprising a magnet 3 fixed to the bottom of the key shaft body 2; further comprising a return spring located between the key shaft body 2 and the key shaft cavity 12 4; It is characterized in that the shell 1 is integrally formed, and a first groove 121 and a second groove 122 are provided on the mirror-symmetrical inner wall of the key shaft cavity 12, and the first groove 121 and the second groove 122 are both straight line segments, and their lengths are the travel distance of the up and down displacement of the key shaft body 2; a first elastic block 221 and a second elastic block 222 are provided on the mirror-symmetrical outer wall of the shaft body 22 of the key shaft body 2, and the first elastic block 221 is located in the first groove 121, and the second elastic block 222 is located in the second groove 122.

[0005] In the above-mentioned novel magnetic axis push switch, the first elastic block 221 is a first elastic arm extending obliquely upward from the outer wall of the shaft body 22, and the second elastic block 222 is a second elastic arm extending obliquely upward from the outer wall of the shaft body 22; when the first elastic arm and the second elastic arm are freely extended, they are respectively located in the first groove 121 and the second groove 122 and slide.

[0006] In the above-mentioned novel magnetic axis key switch, the return spring 4 is located between the bottom of the shaft body 22 of the key shaft body 2 and the bottom of the key shaft cavity 12 .

[0007] In the above-mentioned novel magnetic axis push switch, a first receiving groove 220A and a second receiving groove 220B are provided on the mirror-symmetrical outer wall of the shaft portion 22 of the key shaft body 2; the first elastic arm extends upward from the first receiving groove 220A, and the second elastic arm extends upward from the second receiving groove 220B.

[0008] In the above-mentioned novel magnetic axis key switch, a magnet chamber 223 is provided at the bottom of the shaft portion 22 of the key shaft body 2, and the magnet 3 is fixed in the magnet chamber 223.

[0009] The novel magnetic axis key switch has a spring groove 224 around the magnet chamber 223 , and the return spring 4 can be clamped between the spring groove 224 and the bottom of the key axis cavity 12 .

[0010] In the above-mentioned novel magnetic axis key switch, the bottom of the key axis cavity (12) is provided with a spring enclosure 123 extending upward, and the return spring 4 can be placed in the spring enclosure 123.

[0011] Compared with the prior art, the technical solution of the utility model has the advantages that the integrated structural design of the housing can reduce the use of assembly parts, prevent misalignment, enhance the feel of use, and simplify the assembly of components, which can effectively reduce manufacturing costs and enhance product competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a three-dimensional diagram of a new magnetic axis push button switch of the utility model.

[0013] Figure 2 This is an exploded view of the components and positional relationship of a new type of magnetic axis key switch of the utility model.

[0014] Figure 3 The utility model is a bottom view of a key shaft body of a novel magnetic axis key switch.

[0015] Figure 4 This is an AA cross-sectional view of a new magnetic axis push button switch of the utility model.

[0016] Figure 5 This is a cross-sectional view of a new magnetic axis push switch BB of the utility model. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below in conjunction with the embodiments and drawings.

[0018] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0019] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The utility model is shown as a first embodiment of a new type of magnetic axis key switch. It includes a plastic shell 1 with a key shaft hole 11, the shell 1 is integrally formed, and a key shaft cavity 12 is formed by extending inward from the key shaft hole 11; it also includes a plastic key shaft body 2 located in the key shaft cavity 12, the top of the key shaft body 2 is provided with a pressing portion 21, the pressing portion 21 extends out of the key shaft hole 11, and the shaft body 22 of the key shaft body 2 is located in the key shaft cavity 12 and can move up and down; there is a magnet bin 223 at the bottom of the shaft body 22 of the key shaft body 2, and the magnet 3 is fixed in the magnet bin 223. There is a spring groove 224 around the magnet bin 223, and the bottom of the key shaft cavity (12) is provided with a spring enclosure 123 extending upward, and the return spring 4 can be placed in the spring enclosure 123, and the return spring 4 can be clamped between the spring groove 224 and the bottom of the key shaft cavity 12. A first groove 121 and a second groove 122 are provided on the mirror-symmetrical inner wall of the key shaft cavity 12. The first groove 121 and the second groove 122 are both straight line segments, and their lengths are the travel distance of the key shaft body 2 moving up and down; a first elastic block 221 and a second elastic block 222 are provided on the mirror-symmetrical outer wall of the shaft body 22 of the key shaft body 2. In this embodiment, the first elastic block 221 is a first elastic arm extending obliquely upward from the outer wall of the shaft body 22, and the second elastic block 222 is a second elastic arm extending obliquely upward from the outer wall of the shaft body 22. When the first elastic arm and the second elastic arm are freely extended, they are respectively located in the first groove 121 and the second groove 122 and can slide in the first groove 121 and the second groove 122. A spring groove 224 is provided around the magnet compartment 223, and the return spring 4 can be clamped between the spring groove 224 and the inner bottom of the spring enclosure 123 of the key shaft cavity 12. Of course, in order to ensure the smooth movement of the key shaft body 2 in the key shaft cavity 12, the present embodiment provides a first elastic clamping block 221, a second elastic clamping block 222, a third clamping block and a fourth clamping block.

[0020] In this way, during installation, the magnet 3 is fixed in the magnet compartment 223, the return spring 4 is installed in the spring enclosure 123, and then the key shaft body 2 is installed from the key shaft hole 11. The first elastic block 221, i.e., the first elastic arm, and the second elastic block 222, i.e., the second elastic arm, on the mirror-symmetrical outer wall of the shaft body 22 of the key shaft body 2 are pressed against the outer wall of the shaft body 22 until they move to the first groove 121 and the second groove 122. The squeezing force on the first elastic arm and the second elastic arm is eliminated and they can slide freely in the first groove 121 and the second groove 122. At this time, the pressing part 21 is pressed, the key shaft body 2 moves downward, and the magnet 3 moves downward with the key shaft body 2 to the bottom of the shell 1 so that the sensing element set on the circuit board where the key is located senses the magnetic force and outputs a signal. When the pressing force of the pressing part 21 is eliminated, the return spring moves the key shaft body 2 upward, and the magnetic force sensed by the sensing element set on the circuit board is very small. This process realizes the switch function.

[0021] refer to Figure 2 The second embodiment of a new type of magnetic axis key switch of the utility model is shown. This second embodiment is based on the first embodiment, and the first receiving groove 220A and the second receiving groove 220B are provided on the mirror-symmetrical outer wall of the shaft body 22 of the key shaft body 2; the first elastic arm extends upward from the first receiving groove 220A, and the second elastic arm extends upward from the second receiving groove 220B. In this way, the roots of the first elastic arm and the second elastic arm can be hidden in the first receiving groove 220A and the second receiving groove 220B, making it easier to assemble the key shaft body 2 into the housing 1, and also making the gap between the key shaft body 2 and the key shaft cavity 12 smaller after installation, ensuring the smooth operation of the key shaft body 2.

[0022] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A novel magnetic axis key switch, comprising a plastic housing (1) having a key axis hole (11), and a key axis cavity (12) formed by the key axis hole (11) extending inwardly; a plastic key axis body (2) located in the key axis cavity (12), a pressing portion (21) being provided on the top of the key axis body (2), the pressing portion (21) extending out of the key axis hole (11), and a shaft portion (22) of the key axis body (2) being located in the key axis cavity (12) and being movable up and down; a magnet (3) fixed to the bottom of the key axis body (2); and a return spring (4) located between the key axis body (2) and the key axis cavity (12); characterized in that The shell (1) is integrally formed, and a first groove (121) and a second groove (122) are provided on the mirror-symmetrical inner wall of the key shaft cavity (12), and the first groove (121) and the second groove (122) are both straight line segments, and their lengths are the travel distance of the key shaft body (2) moving up and down; a first elastic block (221) and a second elastic block (222) are provided on the mirror-symmetrical outer wall of the shaft body (22) of the key shaft body (2), and the first elastic block (221) is located in the first groove (121), and the second elastic block (222) is located in the first groove (121). The block (222) is located in the second groove (122); the first elastic block (221) is a first elastic arm extending obliquely upward from the outer wall of the shaft body (22), and the second elastic block (222) is a second elastic arm extending obliquely upward from the outer wall of the shaft body (22); the first elastic arm and the second elastic arm are respectively located in the first groove (121) and the second groove (122) for sliding when they are freely extended; the return spring (4) is located between the bottom of the shaft body (22) of the key shaft body (2) and the bottom of the key shaft cavity (12).

2. A novel magnetic axis key switch according to claim 1, characterized in that A first accommodating groove (220A) and a second accommodating groove (220B) are provided on the mirror-symmetrical outer wall of the shaft body (22) of the key shaft body (2); the first elastic arm extends upward from the first accommodating groove (220A), and the second elastic arm extends upward from the second accommodating groove (220B).

3. A novel magnetic axis key switch according to claim 2, characterized in that A magnet bin (223) is provided at the bottom of the shaft body (22) of the key shaft body (2), and the magnet (3) is fixed in the magnet bin (223).

4. A novel magnetic axis key switch according to claim 3, characterized in that A spring groove (224) is provided around the magnet chamber (223), and the return spring (4) can be clamped between the spring groove (224) and the bottom of the key shaft cavity (12).

5. A novel magnetic axis key switch according to claim 4, characterized in that A spring enclosure (123) is provided at the bottom of the key shaft cavity (12) and extends upward, and the return spring (4) can be placed in the spring enclosure (123).

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