Button switch with adjustable elastic force

Abstract

The invention discloses an elastic-force-adjustable key switch, which comprises a button, an upper shell, a bottom shell, a first magnetic piece, a push rod and a second magnetic piece, and is characterized in that the first magnetic piece is connected with the button, and the button is driven by a spring to rebound and reset; the push rod is movably installed in the upper shell to form a toggling structure, the second magnetic piece is assembled with the push rod and is separated from the first magnetic piece by a certain distance, and a rebounding structure for the button is formed by superposing magnetic force between the first magnetic piece and the second magnetic piece and elastic force of the spring. The distance between the second magnetic piece and the first magnetic piece is changed by shifting the push rod, so that the magnetic force between the first magnetic piece and the second magnetic piece is adjusted, and the magnetic force between the two magnetic pieces is adjustable. And the elastic force of the switch is formed by the elastic force of the spring and the magnetic force between the two magnetic pieces, so that the elastic force of the switch is adjustable, more diversity is achieved, the playability is higher, and the use requirements of more people can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of key switch products, and in particular to a key switch with adjustable elastic force, which is mainly used in products such as keyboards. Background Art

[0002] A key switch is a common switch form, such as a keyboard magnetic axis switch. At present, the magnetic axis switch on the market generally includes an upper cover, a bottom shell, a button, a spring, a magnet, etc. When the button is pressed, the spring is compressed, and the Hall switch element on the circuit board is triggered by the magnet to realize the triggering operation of the key; when the button is released, the spring rebounds, so that the key is reset and rebounds, and the feel of pressing the key is provided. The elastic force of the entire switch is determined by the spring. The problem with this structural form is that since the elastic force of the spring is certain, the rebound force of the key is also fixed, which makes it inconvenient to change the feel of the key and difficult to meet the needs of different users. Although there are also key switches on the market that can change the feel of the key, such as a magnetic scissor frame key switch disclosed in Chinese invention patent CN214099459U, which forms a pressing force shearing magnetic attraction by installing two magnetic blocks so that the central axis of the magnetic poles between the two magnetic blocks is perpendicular to the action direction of the key slot, and can feedback the feeling of the sudden change of the pressure of the pressing finger to the paragraph. However, this scheme cannot realize the adjustable magnetic force, so it cannot adapt to users with different feel. At the same time, the two magnetic blocks of this scheme are in the vertical direction, and the magnetic force increases geometrically as the button moves, which makes the pressing feel uncomfortable. In addition, the existing key switch structure of this type is relatively complex, involving many parts and high cost. Summary of the invention

[0003] In view of the defects in the prior art, the present invention provides a key switch with adjustable elastic force which has a simpler structure, a more reasonable design, fewer parts, a lower cost and a more variable pressing feel.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: a push button switch with adjustable elastic force, comprising a button, an upper shell and a bottom shell, the upper shell and the bottom shell are assembled and fixed, the button is installed in the bottom shell and a part of it extends out of the upper shell; the button is connected to a first magnetic part, and the first magnetic part is moved downward by pressing the button to realize the switch triggering action; a spring is arranged between the button and the bottom shell, and the button is driven to rebound and reset by the spring; it also includes a push rod and a second magnetic part, the push rod is movably installed in the upper shell to form a toggle structure; the second magnetic part is assembled and fixed to the push rod, the first magnetic part and the second magnetic part are separated by a distance, and a rebound structure for the button is formed by the magnetic force between the first magnetic part and the second magnetic part and the elastic force of the spring, and the distance between the second magnetic part and the first magnetic part is changed by toggling the push rod to adjust the magnetic force between the first magnetic part and the second magnetic part, thereby realizing the adjustable elastic force of the switch.

[0005] Furthermore, a mounting hole is provided in the main body of the push rod, and the second magnetic member is mounted in the mounting hole.

[0006] Alternatively, the main body of the push rod is provided with a mounting post, and the second magnetic member is sleeved on the mounting post. Alternatively, the second magnetic member and the push rod are formed into an integral component through in-mold molding.

[0007] Furthermore, a shifting hole is provided on the side platform at the upper edge of the upper shell, and the rod head of the push rod extends from the shifting hole to form a movable structure, and the main body of the push rod and the second magnetic part extend into the space formed by the upper shell and the bottom shell so that the second magnetic part is opposite to the first magnetic part.

[0008] Furthermore, a sleeve is provided at the bottom of the button, and the first magnetic member is installed in the sleeve and extends downward for a section; a plug-in sleeve is provided in the bottom shell at a position opposite to the sleeve, and the plug-in sleeve protrudes upward from the bottom surface of the bottom shell. When the button is pressed, the first magnetic member is inserted downward into the plug-in sleeve together with the sleeve to trigger the switch action.

[0009] Preferably, the spring sleeve is arranged outside the sleeve and the plug-in sleeve and respectively abuts against the button and the bottom shell.

[0010] Furthermore, a positionable elastic contact assembly structure is formed between the push rod and the upper shell and the bottom shell through the elastic boss and the positioning beads cooperating with the positioning grooves. For example, an upper positioning bead and a lower positioning bead are respectively provided on the top of the main part of the push rod and the bottom surface of the elastic boss, and the upper shell and the bottom shell are respectively provided with positioning grooves at the positions corresponding to the upper positioning bead and the lower positioning bead to achieve positioning after the push rod is moved.

[0011] Preferably, the second magnetic member has different polarities on the side opposite to the first magnetic member to form a mutually attractive structure. When the push rod is moved, the second magnetic member moves relative to the first magnetic member to change the distance between the two, thereby adjusting the suction force between the first magnetic member and the second magnetic member.

[0012] Alternatively, the second magnetic member has the same polarity as the side opposite to the first magnetic member to form a mutually repelling structure, and when the push rod is moved, the second magnetic member moves relative to the first magnetic member to change the distance between the two to adjust the repulsive force between the first magnetic member and the second magnetic member.

[0013] Furthermore, a guide groove is arranged inside the upper shell at a position aligned with the push hole, and the main body of the push rod is embedded in the guide groove to form a slidable structure.

[0014] The present invention sets a slidable push rod in the upper shell, and the second magnetic part is fixedly assembled with the push rod so that it can be pushed along with the push rod. In this way, the distance between the second magnetic part and the first magnetic part can be changed when the push rod is pushed, so that the magnetic force between the two magnetic parts can be adjusted. The elastic force of the switch is formed by the elastic force of the spring and the magnetic force between the two magnetic parts. The elastic force of the switch is more diverse in the form of combined force, and the playability is higher, which can meet the use needs of more people. At the same time, the structure of the whole product is simpler, the parts are fewer, and the cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional appearance diagram of the present invention;

[0016] Figure 2 It is a schematic cross-sectional structure diagram of a first embodiment of the present invention;

[0017] Figure 3 It is a schematic diagram of the decomposed structure of the first embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the cooperation between the push rod and the second magnetic device according to the first embodiment of the present invention;

[0019] Figure 5 A schematic diagram of a push rod according to a first embodiment;

[0020] Figure 6 It is a schematic diagram of the structure of the upper shell of the present invention;

[0021] Figure 7 It is a structural schematic diagram of the bottom shell of the present invention;

[0022] Figure 8 It is a schematic diagram of the overall structure of a second embodiment of the present invention;

[0023] Fig. 9 It is a schematic diagram of the overall structure of a third embodiment of the present invention;

[0024] Fig.10 Schematic diagram of a push rod according to a fourth embodiment of the present invention.

[0025] In the figure, 1 is a button, 11 is a sleeve, 2 is an upper shell, 21 is a side platform, 22 is a dial hole, 23 is a guide groove, 24 is a positioning groove, 3 is a bottom shell, 31 is a plug-in cylinder, 32 is a positioning groove, 4 is a spring, 5 is a first magnetic member, 6 is a push rod, 61 is a rod head, 62 is a mounting hole, 63 is a baffle, 64 is a baffle arm, 65 is a positioning rib, 66 is an elastic boss, 67 is a lower positioning bead, 68 is an upper positioning bead, and 7 is a second magnetic member. DETAILED DESCRIPTION

[0026] Example 1, reference Figure 1-Figure 7The adjustable elastic force push button switch includes a button 1, an upper shell 2 and a bottom shell 3. The upper shell 2 and the bottom shell 3 are assembled and fixed. The button 1 is installed in the bottom shell 3 and a part of it extends from the upper shell 2 for pressing; the button 1 is connected to a first magnetic member 5, and the first magnetic member 5 moves downward by pressing the button 1 to cooperate with the Hall element on the circuit board to realize the switch triggering action; a spring is arranged between the button 1 and the bottom shell 3, and the spring provides a first elastic force to drive the button 1 to rebound and reset; it also includes a push rod 6 and a second magnetic member 7, and the push rod 6 is movably installed A toggle structure is formed in the upper shell 2, and the toggle gear can be set to 2-4 gears, such as 3 gears; the second magnetic member 7 is assembled and fixed to the push rod 6, and the first magnetic member 5 and the second magnetic member 7 are separated by a distance, at a certain angle, and are not on the same vertical line. The magnetic force (attraction or repulsion) between the first magnetic member 5 and the second magnetic member 7 is superimposed on the elastic force of the spring to form a rebound structure for the button 1. By changing the distance between the second magnetic member 7 and the first magnetic member 5 by toggling the push rod 6, the magnetic force between the first magnetic member 5 and the second magnetic member 7 can be changed. The farther the distance, the smaller the magnetic force; the closer the distance, the greater the magnetic force. The magnetic force between the first magnetic member 5 and the second magnetic member 7 drives the button 1 to provide a second elastic force, and the elastic force of the switch is composed of the first elastic force and the second elastic force.

[0027] A mounting hole 62 is provided in the main body of the push rod 6, and the second magnetic member 7 is mounted in the mounting hole 62. When the rod head 61 is moved, the second magnetic member 7 moves with the push rod 6, thereby moving away from or close to the first magnetic member 5, for example, the first gear is closest to the first magnetic member 5, the second gear is the second, and the third gear is the farthest.

[0028] In addition, a mounting post may be provided on the main body of the push rod 6, and the second magnetic member 7 may be sleeved on the mounting post. Alternatively, the second magnetic member 7 and the push rod 6 may be formed into an integral component by in-mold molding.

[0029] A shifting hole 22 is provided on the side platform 21 at the upper edge of the upper shell 2, and the rod head 61 of the push rod 6 extends from the shifting hole 22 so that it can be shifted by hand. The main body of the push rod 6 and the second magnetic member 7 extend into the space formed by the upper shell 2 and the bottom shell 3 so that the second magnetic member 7 is opposite to the first magnetic member 5.

[0030] A guide groove 23 is provided inside the upper shell 2 at a position aligned with the shifting hole 22. The size (length or width) of the guide groove 23 is larger than the size of the main part of the push rod 6, so that the main part of the push rod 6 can slide left and right or forward and backward after being embedded in the guide groove 23. A positioning rib 65 (or groove) can also be provided in the guide groove 23 to cooperate with the push rod to achieve position limiting.

[0031] A sleeve 11 is provided at the bottom of the button 1, and the first magnetic member 5 is installed in the sleeve 11 and extends downward for a section; an inserting tube 31 is provided at a position opposite to the sleeve 11 in the bottom shell 3, and the inserting tube 31 protrudes upward from the bottom surface of the bottom shell 3. When the button 1 is pressed, the first magnetic member 5 is inserted downward into the inserting tube 31 together with the sleeve 11 to trigger the switch action.

[0032] The spring 4 is sleeved on the outside of the sleeve 11 and the plug-in sleeve 31 and respectively abuts against the button 1 and the bottom shell 3 .

[0033] The lower part of the push rod 6 is provided with an elastic boss 66 to form an assembly structure in elastic contact with the bottom shell 3. An upper positioning bead 68 and a lower positioning bead 67 are respectively provided at the top of the main part of the push rod 6 and the bottom surface of the elastic boss 66. The upper shell 2 and the bottom shell 3 are respectively provided with positioning grooves 24 and 32 at the positions corresponding to the upper positioning bead 68 and the lower positioning bead 67, so as to realize the positioning after the push rod 6 is moved (the positioning groove 24 in the upper shell 2 is provided in the guide groove 23). Of course, the positions of the elastic boss 66, the positioning beads and the positioning grooves can be flexibly set at different positions, for example, the positioning bead is provided in the upper shell 2 or the bottom shell 3, and the positioning groove is provided on the push rod 6, and the actual effect is the same.

[0034] The first magnetic member 5 and the second magnetic member 7 are both magnets, and the magnets may be cylindrical, block-shaped, pancake-shaped or in other shapes.

[0035] In addition, the second magnetic member 7 and the first magnetic member 5 can be set to have different polarities on the opposite side to form a mutually attractive structure (opposites attract each other), and when the push rod 6 is turned, the second magnetic member 7 moves relative to the first magnetic member 5 to change the distance between the two to adjust the suction force between the first magnetic member 5 and the second magnetic member 7. In this way, a part of the elastic force of the spring 4 can be offset, thereby reducing the force required to press the switch. This type of switch is more suitable for use in fields where the pressing action is relatively gentle, such as typing, and is particularly suitable for users who want to press with less force, such as women.

[0036] Alternatively, the second magnetic member 7 and the first magnetic member 5 can also be set to have the same polarity on the opposite side to form a mutually repelling structure (like repels like), and when the push rod 6 is turned, the second magnetic member 7 moves relative to the first magnetic member 5 to change the distance between the two to adjust the repulsive force between the first magnetic member 5 and the second magnetic member 7. The repulsive force is superimposed on the elastic force of the spring 4 to increase the force required to press the switch. This switch is more suitable for use in fields such as e-sports where the pressing action is more intense.

[0037] As Example 2, refer to Figure 8The front and rear sides of the rod head 61 are provided with positioning ribs 65, and the front and rear side walls of the shifting hole 22 are provided with positioning grooves, so that the push rod 6 can be shifted left and right for adjustment. The positioning ribs 65 are inserted into the positioning grooves to achieve the positioning of the push rod 6, so that the second magnetic member 7 will not change position due to the self-movement of the push rod 6, that is, the positioning is achieved.

[0038] As Example 3, refer to Fig. 9 The positioning ribs 65 are arranged on the left and right sides of the rod head 61, and the left and right side walls of the shifting hole 22 are provided with positioning grooves, so that the push rod 6 can be moved forward and backward for adjustment.

[0039] As Example 4, refer to Fig.10 The elastic boss 66 is arranged between the rod head 61 and the main part of the push rod 6, the two upper positioning beads 68 are arranged on the left and right sides of the rod head 61 on the top surface of the elastic boss 66 in a left and right structure, and the two lower positioning beads 67 are arranged on the bottom surface of the main part of the push rod 6 in a left and right structure.

[0040] Of course, the positions of the upper positioning beads 68, the lower positioning beads 67, the positioning grooves 23, and the positioning grooves 32 can also be set at other positions as long as the positioning can be achieved.

[0041] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. A key switch with adjustable elastic force, comprising a button, an upper shell and a bottom shell, wherein the upper shell and the bottom shell are assembled and fixed, the button is installed in the bottom shell and partially extends out of the upper shell; the button is connected to a first magnetic member, and the first magnetic member is moved downward by pressing the button to realize the switch triggering action; a spring is arranged between the button and the bottom shell, and the button is driven to rebound and reset by the spring, characterized in that: It also includes a push rod and a second magnetic part, which are movably installed in the upper shell to form a movable structure; the second magnetic part is assembled and fixed to the push rod, and the first magnetic part and the second magnetic part are separated by a distance. The magnetic force between the first magnetic part and the second magnetic part is superimposed on the elastic force of the spring to form a rebound structure for the button, and the distance between the second magnetic part and the first magnetic part is changed by toggling the push rod to adjust the magnetic force between the first magnetic part and the second magnetic part.

2. The key switch with adjustable elastic force according to claim 1, characterized in that: A mounting hole is arranged in the main body of the push rod, and the second magnetic member is mounted in the mounting hole.

3. The key switch with adjustable elastic force according to claim 1, characterized in that: The main body of the push rod is provided with a mounting column, and the second magnetic component is sleeved on the mounting column; or the second magnetic component and the push rod are formed into an integral component through in-mold molding.

4. The key switch with adjustable elastic force according to claim 2, characterized in that: A shifting hole is arranged on the side platform at the upper edge of the upper shell, and the rod head of the push rod extends from the shifting hole to form a shiftable structure, and the main body of the push rod and the second magnetic part extend into the space formed by the upper shell and the bottom shell so that the second magnetic part is opposite to the first magnetic part.

5. The key switch with adjustable elastic force according to any one of claims 1 to 4, characterized in that: A sleeve is provided at the bottom of the button, and the first magnetic member is installed in the sleeve and extends downward for a section; an inserting sleeve is provided in the bottom shell at a position opposite to the sleeve, and the inserting sleeve protrudes upward from the bottom surface of the bottom shell. When the button is pressed, the first magnetic member is inserted downward into the inserting sleeve together with the sleeve to trigger the switch action.

6. The key switch with adjustable elastic force according to claim 5, characterized in that: The spring sleeve is arranged outside the sleeve and the plug-in sleeve and respectively abuts against the button and the bottom shell.

7. The key switch with adjustable elastic force according to claim 2, characterized in that: The push rod, the upper shell and the bottom shell form a positionable elastic contact assembly structure through the elastic boss and the positioning bead cooperating with the positioning groove.

8. The key switch with adjustable elastic force according to claim 2, characterized in that: The second magnetic member has a different polarity on the side opposite to the first magnetic member to form a mutually attractive structure. When the push rod is moved, the second magnetic member moves relative to the first magnetic member to change the distance between the two, thereby adjusting the suction force between the first magnetic member and the second magnetic member.

9. The key switch with adjustable elastic force according to claim 2, characterized in that: The second magnetic member has the same polarity as the side opposite to the first magnetic member to form a mutually repelling structure. When the push rod is moved, the second magnetic member moves relative to the first magnetic member to change the distance between the two, thereby adjusting the repulsive force between the first magnetic member and the second magnetic member.

10. The key switch with adjustable elastic force according to claim 4, characterized in that: A guide groove is arranged inside the upper shell at a position aligned with the dial hole, and the main body of the push rod is embedded in the guide groove to form a slidable structure.

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