Key switch

Abstract

The utility model relates to the technical field of keyboard keys, in particular to a key switch which comprises a shell and a hollow structure, and a through hole is formed in the top end of the shell. The key is arranged in the shell, and part of the key protrudes along the through hole; the magnetic part is abutted against and fixed with the bottom of the key, and the magnetic part is completely arranged in the shell; and the key moves up and down along the height direction of the key to drive the magnetic piece to move up and down. According to the utility model, the problem that the sensitivity and the accuracy of the electromagnetic shaft key switch are affected by the shaking of the magnet caused by the deviation force in the horizontal direction in the pressing process of the existing electromagnetic shaft key switch is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to keyboard key technical field, especially a key switch. BACKGROUND

[0002] Keyboard is used for operating computer equipment to run an instruction and data input device, also point to the system arrangement operation a machine or a set of function keys.

[0003] According to the working principle of different keyboard, can divide: 1) mechanical keyboard: mechanical keyboard adopts similar metal contact type switch, working principle is to make contact conduction or break, has the characteristics of simple technology, noise, easy maintenance;2) plastic film type keyboard: keyboard is divided into four layers, realizes no mechanical wear and tear. Its characteristics are low price, low noise and low cost;3) magnetic shaft keyboard, compared with the smoothness of mechanical shaft will be higher, and the pressure gram is smaller, the most obvious feeling when typing is no delay, quick response. Among them, magnetic shaft keyboard gradually develops electromagnetic shaft keyboard. The electromagnetic shaft keyboard is matched with aluminum positioning plate, silica gel sleeve gasket cushioning, filling is also more than general magnetic shaft keyboard.

[0004] The existing electromagnetic shaft key switch adopts the structure that the magnet is integrally arranged with the key switch (as shown in the figure), but in the pressing process of the key, there is a horizontal deviation force, which causes the magnet to shake, affecting the sensitivity and accuracy of the electromagnetic shaft key switch. Figure 1

[0005] The utility model provides a kind of key switch. UTILITY MODEL CONTENT

[0006] The utility model content of the utility model provides a kind of key switch, mainly solves the existing electromagnetic shaft key switch in pressing process, there is horizontal deviation force, magnet shakes, affects the sensitivity and accuracy of the electromagnetic shaft key switch.

[0007] The utility model provides a kind of key switch, comprising:

[0008] Shell, hollow structure, and the top of the shell is provided with through-hole;

[0009] Key, is set in the shell, and part is along the through-hole and protruding setting;

[0010] Magnetic piece, with the bottom of the key abutment fixed, and the magnetic piece is completely built-in in the shell;

[0011] The key moves up and down along the height direction of itself, drives the magnetic piece to move up and down.

[0012] ​Preferably, the bottom of the key is provided with a connecting piece in the form of a semisphere.

[0013] The connecting piece is in abutment with the top surface of the magnetic piece.

[0014] Preferably, the top of the semisphere of the connecting piece is in the same vertical line with the center point of the magnetic piece.

[0015] Preferably, the bottom edge of the key is provided with a limiting structure, and the length direction of the limiting structure is the same as the height direction of the magnetic piece.

[0016] The limiting structure is annularly arranged outside the magnetic piece.

[0017] Preferably, the utility model further comprises:

[0018] an elastic structure annularly arranged outside the magnetic piece and arranged in the limiting structure; one end of the elastic structure is in abutment with the inner bottom surface of the shell, and the elastic structure has a restoring tendency when the key is moved downward.

[0019] Preferably, the end of the magnetic piece towards the key is larger than the other end of the magnetic piece; one end of the elastic structure is in abutment with the bottom surface of the end of the magnetic piece towards the key, and the other end is in abutment with the inner bottom surface of the shell.

[0020] Preferably, the shell comprises:

[0021] an upper cover provided with a through hole for the key to pass through;

[0022] a bottom shell detachably connected with the upper cover, and the inner bottom surface of the bottom shell is provided with a positioning groove; the positioning groove is annularly arranged outside the magnetic piece, and the positioning groove is arranged in the coverage range of the limiting structure.

[0023] The elastic structure is annularly arranged outside the positioning groove.

[0024] The key drives the magnetic piece to move downward until the bottom of the magnetic piece is in abutment with the bottom of the positioning groove.

[0025] Preferably, the top of the key is in the form of a cylinder.

[0026] The through hole of the upper cover is in the form of a circle, and the inner diameter of the through hole is equal to the outer diameter of the top of the key.

[0027] As can be seen from the above, the technical scheme provided by the utility model can obtain the following beneficial effects:

[0028] First, the key switch provided by the utility model separates the key and the magnetic part, the key is directly stressed structure, when there is horizontal force in the pressing process, the magnetic part is avoided to be directly affected, the shaking degree of the magnetic part is reduced, and the sensitivity and accuracy of the key switch are improved;

[0029] Second, the key switch provided by the utility model abuts against the magnetic part through the hemispherical connecting piece, when the key shakes horizontally, the hemispherical surface can still abut against the magnetic part, the transmission relationship between the key and the magnetic part in the horizontal direction is weakened, and the stability of the magnetic part is further improved;

[0030] Third, the key switch provided by the utility model is provided with the elastic structure, the automatic rebound of the key switch can be realized, and the normal use process of the key switch is ensured;

[0031] Fourth, the key switch provided by the utility model is provided with the positioning groove, the movement path of the magnetic part is further limited, the magnetic part is avoided to shake horizontally, the vertical movement degree of the magnetic part is limited, and the pressing degree control of the key switch is realized. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor under the premise of the drawings.

[0033] Figure 1 It is the sectional view of the key switch at the present stage;

[0034] Figure 2 It is the sectional view of the key switch in the embodiment of the utility model;

[0035] Figure 3 It is the explosion view of the key switch in the embodiment of the utility model;

[0036] Figure 4 It is the structure view of the key on the key switch in the embodiment of the utility model. DETAILED DESCRIPTION

[0037] The technical scheme in the embodiments of the utility model will be clearly and completely described below with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the utility model.

[0038] The existing electromagnetic shaft key switch is prone to horizontal offset force during pressing, which causes the magnet to shake, affecting the sensitivity and accuracy of the electromagnetic shaft key switch.

[0039] As shown in Figures 2 to 4 To solve the above problems, the embodiment provides a key switch, which comprises a shell 10, a key 20 and a magnetic member 30. The shell 10 is a hollow structure, and a through hole 111 is formed at the top end of the shell 10. The key 20 is arranged in the shell 10 and partially protrudes along the through hole 111. The magnetic member 30 is in abutting and fixed connection with the bottom of the key 20, and the magnetic member 30 is completely built-in in the shell 10. The key 20 moves up and down along the height direction of the key 20, driving the magnetic member 30 to move up and down.

[0040] Preferably, the height of the shell 10 in the embodiment is at most equal to the sum of the height of the magnetic member 30 and the height of the key 20, so that the top of the key 20 is at most flush with the top surface of the shell 10 in the pressed state, avoiding the key 20 from falling into the shell 10 and failing to achieve pressing.

[0041] Preferably, the key 20 in the embodiment is in cylindrical shape, the through hole 111 is in circular shape, and the key 20 and the through hole 111 are matched in hole diameter.

[0042] Preferably, the magnetic member 30 in the embodiment comprises an external wrapping structure 31 and an internal magnet 32. The magnet 32 is arranged at the bottom of the external wrapping structure 31. The bottom of the magnet 32 constitutes the bottom of the magnetic member 30, and the height of the magnet 32 is less than the height of the magnetic member 30. Preferably but not limitedly, the external wrapping structure 31 is in T shape, and the magnet 32 is in cylindrical shape.

[0043] In the embodiment, the key 20 and the magnetic member 30 are arranged separately, which can avoid the key 20 from directly conducting the horizontal shaking of the magnetic member 30 when the key 20 is subjected to horizontal force, reducing the problem of false sensing or reduced sensing sensitivity of the electromagnetic shaft key 20.

[0044] More specifically, the bottom of the key 20 is protruded to form a connecting piece, and the connecting piece is in hemispherical surface shape. The connecting piece is in abutting connection with the top surface of the magnetic member 30.

[0045] Preferably, the top point of the upper hemispherical surface of the connecting piece and the center point of the magnetic member 30 are located on the same vertical line in the embodiment.

[0046] Preferably, the hemispherical surface of the connecting piece covers 1 / 3 of the current end surface in the embodiment, which ensures that the magnetic member 30 can still be in abutting and fixed connection with the key 20 when the shaking degree in the horizontal direction is less than the 1 / 3 range.

[0047] Preferably, the overall height of the connecting piece in the embodiment is limited, which can ensure that the height difference between the highest point and the lowest point of the semi-spherical surface is small, avoiding the height of the magnetic piece 30 from changing greatly when shaking, which affects the expression of the electromagnetic shaft button 20.

[0048] In the embodiment, under normal circumstances, the button 20 abuts against the magnetic piece 30 at the highest point of the connecting piece. When the button 20 is horizontally shaken due to a horizontal force, it slides along the direction of the semi-spherical surface of the connecting piece and continuously changes the point of action with the magnetic piece 30. However, due to the presence of the semi-spherical surface, it can still ensure that the button 20 abuts against the same point on the magnetic piece 30, thereby ensuring the stability of the magnetic piece 30.

[0049] More specifically, the bottom edge of the button 20 is provided with a limiting structure 22, and the length direction of the limiting structure 22 is the same as the height direction of the magnetic piece 30; the limiting structure 22 is annularly arranged outside the magnetic piece 30.

[0050] Preferably, the limiting structure 22 in the embodiment is provided in the form of two symmetrical arc surfaces, and the curvature radius of the arc surfaces is equal to the curvature radius of the arc surface of the side wall of the button 20.

[0051] Preferably, the limiting structure 22 in the embodiment further has a clamping structure 23 protruding and formed with a clamping hole 111, which avoids the limiting structure 22 of the button 20 from being exposed outside the shell 10.

[0052] Preferably, the length of the limiting structure 22 in the embodiment is substantially the same as the height of the magnetic piece 30.

[0053] In the embodiment, the limiting structure 22 is used to limit the height of the button 20 protruding from the shell 10, and preliminarily limits the movement path of the magnetic piece 30, thereby avoiding the magnetic piece 30 from being separated from the abutting area of the connecting piece of the button 20.

[0054] More specifically, it further includes an elastic structure 40 which is annularly arranged outside the magnetic piece 30 and arranged in the limiting structure 22; one end of the elastic structure 40 abuts against the bottom surface of the T-shaped head of the external wrapping structure 31 of the magnetic piece 30, and the other end of the elastic structure 40 abuts against the inner bottom surface of the shell 10, and the elastic structure 40 has a restoring tendency when the button 20 moves downward.

[0055] Preferably, one end of the elastic structure 40 in the embodiment abuts against the bottom surface of the T-shaped head of the external wrapping structure 31 of the magnetic piece 30, and the other end of the elastic structure 40 abuts against the inner bottom surface of the shell 10.

[0056] Preferably, the elastic structure 40 in the embodiment needs to be in a slightly compressed state when it is arranged, thereby keeping the magnetic piece 30 in abutment with the button 20 at all times.

[0057] Preferably, the elastic structure 40 in the embodiment is a spring, and after the spring is annularly arranged, part of the spring is wrapped by the limiting structure 22, and part of the spring is exposed outside the limiting structure 22.

[0058] In the embodiment, the elastic structure 40 is arranged to keep the abutting contact between the key 20 and the magnetic member 30, and to prevent the key 20 from rebounding after being pressed, thereby ensuring the automatic rebound of the electromagnetic shaft key switch.

[0059] More specifically, the shell 10 comprises a detachably connected upper cover 11 and bottom shell 12; the upper cover 11 is provided with a through hole 111 for the key 20 to pass through; the inner bottom surface of the bottom shell 12 is provided with a positioning groove; the positioning groove is arranged around the magnetic member 30, and the positioning groove is arranged within the coverage range of the limiting structure 22; the elastic structure 40 is sleeved outside the positioning groove; the key 20 drives the magnetic member 30 to move downward until the bottom of the magnetic member 30 abuts against the bottom of the positioning groove.

[0060] Preferably, the upper cover 11 and the bottom shell 12 are detachably connected to form a rectangular structure, and the upper and lower end surfaces of the rectangular structure are both flat.

[0061] Preferably, the through hole 111 is arranged at the center of the upper cover 11; the positioning groove is arranged at the center of the bottom shell 12, and the outer diameter of the positioning groove is smaller than the inner diameter of the limiting structure 22.

[0062] Preferably, the elastic structure 40 is partially sleeved outside the positioning groove.

[0063] Preferably, in the initial state, the magnetic member 30 is partially placed in the positioning groove, and the positioning groove precisely positions the movement path of the magnetic member 30.

[0064] In summary, the embodiment provides a key switch, which is provided with an abutting key and a magnetic member respectively, and when there is a horizontal force on the key, the horizontal shaking degree of the magnetic member is reduced, and the horizontal shaking of the magnetic member is further avoided by the hemispherical surface of the connecting member, thereby ensuring the sensitivity and accuracy of the electromagnetic shaft key.

[0065] The above-described embodiments do not constitute a limitation on the protection scope of the technical solutions. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the above-described embodiments shall be included in the protection scope of the technical solutions.

Claims

1. A push-button switch, characterized in that, include: The shell has a hollow structure, and a through hole is provided at the top of the shell; The button is located inside the housing and partially protrudes along the through hole; A magnetic component is fixed to the bottom of the button, and the magnetic component is completely embedded in the housing; The button moves up and down along its own height, causing the magnetic component to move up and down.

2. A push-button switch according to claim 1, characterized in that: The bottom of the button has a protrusion forming a connector, and the connector is hemispherical. The connector is positioned to abut against the top surface of the magnetic component.

3. A push-button switch according to claim 2, characterized in that: The vertex of the upper hemisphere of the connector and the center point of the magnetic component are located on the same vertical line.

4. A push-button switch according to any one of claims 1 to 3, characterized in that: The bottom edge of the button is provided with a limiting structure, and the length direction of the limiting structure is the same as the height direction of the magnetic component. The limiting structure is located outside the magnetic component.

5. A push-button switch according to claim 4, characterized in that, Also includes: An elastic structure is sleeved outside the magnetic component and disposed within the limiting structure; the other end of the elastic structure abuts against the inner bottom surface of the housing, and the elastic structure tends to return to its original shape as the button moves downward.

6. A push-button switch according to claim 5, characterized in that: The end of the magnetic component facing the button is larger than the other end of the magnetic component; one end of the elastic structure abuts against the bottom surface of the end of the magnetic component facing the button, and the other end abuts against the inner bottom surface of the housing.

7. A push-button switch according to claim 6, characterized in that, The housing includes: The top cover has a through hole for the button to pass through; The bottom shell is detachably connected to the top cover, and the inner bottom surface of the bottom shell has a protruding positioning groove; the positioning groove is arranged around the magnetic component and is located within the coverage area of ​​the limiting structure; The elastic structure is sleeved outside the positioning groove; The button causes the magnetic component to move downwards until the bottom of the magnetic component touches the bottom of the positioning groove and then stops.

8. A push-button switch according to claim 7, characterized in that: The top of the button is cylindrical; The through hole of the top cover is circular, and the inner diameter of the through hole is equal to the outer diameter of the top of the button.

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