A shaft structure to reduce bottoming noise of the shaft core
By using environmentally friendly materials and specially designed slots, sleeves, and tension springs in the mechanical keyboard switch structure, the problem of bottoming-out noise from the switch core has been solved, achieving low-noise and stable movement and improving the user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 渴创技术(深圳)有限公司
- Filing Date
- 2025-04-15
- Publication Date
- 2026-05-26
AI Technical Summary
When traditional mechanical magnetic shafts are pressed, the impact noise generated by the shaft core hitting the bottom can reach as high as 60-70dB, which seriously affects the comfort of the office environment.
The lower and upper shells are made of environmentally friendly materials. The shaft is installed inside the shell. The bottom of the lower shell has a slot that connects to the sleeve. The magnet passes through the slot to reduce collision noise. The shaft works with the tension spring to ensure stable movement of the shaft and reduce magnet collision noise.
It effectively reduces the noise generated by magnet collisions, improves the stability and durability of shaft movement, and enhances the user input experience.
Smart Images
Figure CN224288113U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electronic device input device technology, specifically to a shaft structure that reduces the noise of the shaft core hitting the bottom. Background Technology
[0002] Mechanical keyboards are an important component of computer input devices, and the switches of mechanical keyboards are the core components of human-computer interaction, whose performance directly affects the user's input experience.
[0003] Traditional mechanical magnetic shafts generally use a structure design with spring return and metal contact conduction. In actual use, the magnet of most magnetic shafts is placed at the bottom of the shaft core. When the shaft body is pressed and the shaft core touches the bottom, the magnet at the bottom of the shaft core will directly contact the lower shell. The rigid collision between the magnet and the shell will generate an impact noise of up to 6070dB. This "click" sound is particularly noticeable in high-speed input scenarios, which seriously affects the comfort of the office environment.
[0004] Therefore, a shaft structure to reduce the noise of the shaft core hitting the bottom is proposed. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] To address the shortcomings of existing technologies, this utility model provides a shaft structure that reduces noise from the shaft core touching the bottom. It has the advantages of effectively reducing noise generated when the shaft core touches the bottom, and solves the problem of noise caused by rigid collision when the shaft core touches the bottom in existing mechanical magnetic shafts.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a shaft structure for reducing bottoming noise of the shaft core, comprising a lower shell, an upper shell, and a shaft core. The lower shell engages with the upper shell, and the shaft core is installed between the lower shell and the upper shell. The lower shell, the upper shell, and the shaft core are all made of environmentally friendly materials, such as polyethylene terephthalate (PET) or any other environmentally friendly material that can be used to make the shaft, without affecting its durability. No restrictions are placed here. By closing the lower shell and the upper shell, the shaft core is placed inside the shell and can move stably up and down.
[0009] A sleeve is fixed inside the lower shell, and a slot is opened at the bottom of the lower shell, which communicates with the inside of the sleeve. An upper shell is installed on the lower shell. The sleeve is located in the center of the lower shell, and the slot is located in the center of the bottom of the lower shell. When the magnet moves downward from inside the sleeve, it passes through the slot, thereby reducing the noise generated when the magnet hits the lower shell.
[0010] At the same time, the top of the lower shell and the bottom of the upper shell are closed and installed, which restricts the shaft core to only be able to achieve stable displacement in height.
[0011] The upper shell has a mating groove, and a shaft is movably connected in the mating groove. The shape of the mating groove matches the shape of the side of the shaft. When the upper shell and the lower shell are closed, the side of the shaft fits against the inside of the mating groove, thereby ensuring the stability of the shaft when it achieves height displacement in the mating groove.
[0012] A shaft rod is fixed to the bottom of the shaft core, and the shaft rod is movably sleeved inside the sleeve. A magnet is fixed to the bottom of the shaft rod, and the magnet is vertically opposite to the slot. The shaft rod is vertically fixed at the center of the bottom of the shaft core, and the diameter of the side of the shaft rod matches the diameter inside the sleeve. When the shaft core undergoes a change in height, the shaft rod slides up and down inside the sleeve, improving the stability of the shaft core's displacement. At the same time, the shape and size of the magnet match the inside of the slot, so that the magnet is affected by the change in the height of the shaft core. When it moves downward, the magnet passes through the slot, effectively reducing the noise generated by the magnet collision.
[0013] A tension spring is movably sleeved on the side of the shaft. The two ends of the tension spring are respectively attached to the inner surfaces of the lower shell and the shaft core. When the shaft core changes its height downward due to gravity, the tension spring is in a compressed state. When the shaft core is free from gravity, the tension spring instantly opens to push the shaft core back to its initial position.
[0014] This switch structure, designed to reduce bottoming-out noise, works by having a tension spring movably fitted onto the switch rod, then installing the switch rod inside the lower housing, and sliding the slider within the slide rail. The switch rod is then movably fitted into the sleeve. The upper housing is then installed on the lower housing, with the outer clip engaging the side of the locking block and the inner clip engaging the inside of the upper housing. The switch rod is then movably fitted into the mating groove, and the slide rail is fitted into the stabilizing groove. The keycap is then installed on the connecting button, and the entire switch is inserted into the corresponding key slot on the keyboard, with the metal contact inserted into the corresponding hole on the keyboard's circuit board. In use, pressing the keycap moves the switch rod downwards, tightening the tension spring and causing the switch rod to move the magnet from top to bottom within the sleeve to its limit, triggering the command. The magnet passes through the slot. When the keycap is released, the tension spring pushes the switch rod upwards, causing the entire switch assembly to return to its original position. A metal plate then impacts the top of the stabilizing groove for cushioning.
[0015] As a further improvement to the above solution, a slide rail is provided inside the lower shell, and a slider is provided on the side of the shaft core, with the slider slidably connected inside the slide rail.
[0016] With the above technical solution, two slide rails are arranged vertically opposite each other on both sides inside the lower shell, and two sliders are arranged opposite each other on both sides of the shaft core. When the shaft core is installed inside the lower shell, the sliders are slidably connected to the slide rails, which improves the stability of the shaft core during height displacement.
[0017] As a further improvement to the above solution, a locking block is provided on the side of the lower shell, and an external buckle is provided on the side of the upper shell, with the external buckle engaging with the side of the locking block.
[0018] With the above technical solution, two locking blocks are provided on both sides of the lower shell, and the two locking blocks are spaced apart. At the same time, two external buckles are provided on both sides of the upper shell, and the two external buckles are arranged vertically and parallel. When the upper shell and the lower shell are closed, the external buckles are engaged with the sides of the locking blocks, so as to fix the upper shell and the lower shell after they are closed.
[0019] As a further improvement to the above solution, a moving and stationary plate structure is fixed inside the lower shell, and a metal contact is installed at the bottom of the lower shell. The moving and stationary plate structure is connected to the metal contact, and the moving and stationary plate structure is attached to the side of the shaft core.
[0020] Through the above technical solution, the moving and stationary plate structure consists of a moving plate and a stationary plate. When the keycap is pressed and the switch core moves downward, the moving plate will bend or move, ultimately triggering the keyboard signal.
[0021] As a further improvement to the above solution, a limiting piece is provided on the edge of the top of the lower shell, and a positioning hole is provided on the limiting piece.
[0022] With the above technical solution, when the switch is installed in the key slot inside the keyboard, the limiting piece of the lower shell fits against the edge of the key slot, thus ensuring that the switch is installed in place.
[0023] As a further improvement to the above solution, the side of the lower shell is provided with an inner buckle, one end of which is engaged with the inner wall of the upper shell.
[0024] With the above technical solution, when the upper and lower shells are closed and installed, the inner buckle engages with the inside of the upper shell, thereby improving the stability of the installation of the upper and lower shells.
[0025] As a further improvement to the above solution, a stabilizing groove is provided inside the upper shell, and the slide rail is movably sleeved in the stabilizing groove.
[0026] With the above technical solution, the width of the slide rail matches the width of the stabilizing groove. When the lower shell and the upper shell are closed, the slide rail is fitted into the stabilizing groove, thereby improving the stability of the closure of the lower shell and the upper shell and avoiding the twisting phenomenon between the upper shell and the lower shell.
[0027] As a further improvement to the above solution, a metal sheet is provided on the slider, which can fit against the top of the stabilizing groove at a set height.
[0028] With the above technical solution, two elastic metal plates are arranged opposite each other on the slider, and one end of the metal plate is designed to be inclined upward. When the shaft core is reset upward, the top of the metal plate contacts the top of the stabilizing groove and then gradually deforms downward, thereby playing a buffering role and reducing the noise generated when the shaft core is reset.
[0029] As a further improvement to the above solution, a retaining block is provided on the side of the upper shell, and the retaining block is attached to the side of the card block.
[0030] With the above technical solution, there are retaining blocks on both sides of the upper shell. The two retaining blocks are arranged opposite each other. When the upper shell and the lower shell are closed, the retaining blocks fit between the two locking blocks, which improves the stability of the outer buckle and the locking block.
[0031] As a further improvement to the above solution, a connecting button is provided on the shaft core, and the top of the connecting button is higher than the top of the upper shell.
[0032] With the above technical solution, the connecting button is designed in a cross shape, and the bottom of the keycap has a cross-shaped notch. The keycap is inserted into the connecting button through the notch to achieve the connection between the keycap and the switch core.
[0033] Compared with the prior art, this utility model provides a shaft structure that reduces the noise of the shaft core hitting the bottom, and has the following beneficial effects:
[0034] 1. The shaft structure that reduces the noise generated when the shaft core touches the bottom is achieved by opening a slot at the bottom of the lower shell, with the slot facing the magnet vertically. When the shaft core is subjected to force and moves downward, the magnet at the bottom of the shaft passes through the slot and does not make a rigid collision with the lower shell, thereby effectively reducing the noise generated by the magnet colliding with the lower shell.
[0035] 2. This shaft structure, which reduces the noise of the shaft core hitting the bottom, has a shaft rod installed at the bottom of the shaft core. At the same time, a sleeve communicating with the slot hole is provided in the lower shell, and a tension spring is installed on the side of the shaft rod. When the shaft core is subjected to force and displaces downward, the shaft rod moves up and down in the sleeve, achieving precise axial guidance. This effectively solves the problems of shaft core wobble and unstable tension spring guidance, and further improves its practicality. Attached Figure Description
[0036] Figure 1 This is a schematic diagram of the overall closed structure of the device of this utility model;
[0037] Figure 2 This is a top view diagram of the overall disassembled structure of the device of this utility model;
[0038] Figure 3 This is a schematic diagram of the overall disassembled bottom structure of the device of this utility model;
[0039] Figure 4 This is a schematic diagram of the overall structure of the lower shell of this utility model;
[0040] Figure 5 This is a schematic diagram of the overall structure of the upper shell of this utility model;
[0041] Figure 6 This is a schematic diagram of the overall structure of the shaft core of this utility model.
[0042] The attached diagram lists the components represented by each number as follows:
[0043] 1. Lower shell; 101. Sleeve; 102. Slide rail; 103. Locking block; 104. Moving and stationary plate structure; 105. Metal contact; 106. Limiting plate; 107. Positioning hole; 108. Inner buckle; 109. Slot hole;
[0044] 2. Upper shell; 201. Docking groove; 202. Stabilizing groove; 203. External buckle; 204. Retaining block;
[0045] 3. Shaft core; 301. Shaft rod; 302. Magnet; 303. Tension spring; 304. Slider; 305. Metal sheet; 306. Connecting button. Detailed Implementation
[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0047] Example 1
[0048] Please see Figure 1-6 As shown, the shaft structure for reducing bottoming noise proposed in this embodiment includes a lower shell 1, an upper shell 2, and a shaft core 3. The lower shell 1 and the upper shell 2 are engaged, and the shaft core 3 is installed between the lower shell 1 and the upper shell 2. The lower shell 1, the upper shell 2, and the shaft core 3 are all made of environmentally friendly materials, such as polyethylene terephthalate (PET). Any environmentally friendly material that can be used to make shafts and does not affect the durability of use is acceptable. No restrictions are placed here. By closing the lower shell 1 and the upper shell 2, the shaft core 3 is placed inside the shell and can move stably up and down.
[0049] A sleeve 101 is fixed inside the lower shell 1, and a slot 109 is opened at the bottom of the lower shell 1. The slot 109 communicates with the inside of the sleeve 101. An upper shell 2 is installed on the lower shell 1. The sleeve 101 is located at the center inside the lower shell 1, and the slot 109 is located at the center of the bottom of the lower shell 1. When the magnet 302 moves downward from inside the sleeve 101, it passes through the slot 109, thereby reducing the noise generated when the magnet 302 hits the lower shell 1.
[0050] At the same time, the top of the lower shell 1 and the bottom of the upper shell 2 are closed and installed, which restricts the shaft core 3 to only achieve stable displacement in height.
[0051] The upper shell 2 has a mating groove 201, and a shaft core 3 is movably connected in the mating groove 201. The shape of the mating groove 201 matches the shape of the side of the shaft core 3. When the upper shell 2 and the lower shell 1 are closed, the side of the shaft core 3 fits against the inner side of the mating groove 201, thereby ensuring the stability of the shaft core 3 when it achieves height displacement in the mating groove 201.
[0052] A shaft rod 301 is fixed to the bottom of the shaft core 3. The shaft rod 301 is movably sleeved inside the sleeve 101, and a magnet 302 is fixed to the bottom of the shaft rod 301. The magnet 302 is vertically opposite to the slot 109. The shaft rod 301 is vertically fixed at the center of the bottom of the shaft core 3. The diameter of the side of the shaft rod 301 matches the diameter inside the sleeve 101. When the shaft core 3 undergoes a change in height displacement, the shaft rod 301 slides up and down inside the sleeve 101, improving the stability of the shaft core 3's displacement. At the same time, the shape and size of the magnet 302 match the inside of the slot 109, so that the magnet 302 is affected by the change in the height of the shaft core 3. When it moves downward, the magnet 302 passes through the slot 109, effectively reducing the noise generated by the magnet collision.
[0053] A tension spring 303 is movably sleeved on the side of the shaft 301. The two ends of the tension spring 303 are respectively attached to the inner surfaces of the lower shell 1 and the shaft core 3. When the shaft core 3 is affected by gravity and its height changes downward, the tension spring 303 is in a compressed state. When the gravity of the shaft core 3 disappears, the tension spring 303 instantly opens to push the shaft core 3 back to its initial position.
[0054] The working principle of the shaft structure proposed in this embodiment to reduce the bottoming noise of the shaft core is as follows: In use, the tension spring 303 is movably sleeved on the shaft rod 301, the shaft core 3 is installed in the lower shell 1, and the slider 304 is slidably connected in the slide rail 102. At this time, the shaft rod 301 is movably sleeved in the sleeve 101. Then, the upper shell 2 is installed on the lower shell 1, so that the outer buckle 203 is engaged with the side of the buckle block 103, and the inner buckle 108 is engaged with the inner side of the upper shell 2. At this time, the shaft core 3 is movably sleeved in the mating groove 201, and the slide rail 102 is sleeved in the stabilizing groove 202. Finally, the keycap is installed in the connecting... Connect the switch 306 and insert the entire switch body into the corresponding key slot on the keyboard. Then, insert the metal contact 105 into the corresponding hole on the circuit board inside the keyboard. When in use, press the keycap to make the entire switch core 3 move downward. At this time, the tension spring 303 tightens, and the switch rod 301 drives the magnet 302 to move from top to bottom to the limit in the sleeve 101, triggering the command. The magnet 302 passes through the slot 109. When the keycap is released, the tension spring 303 pushes the switch core 3 upward, so that the entire switch core 3 component is reset. The metal plate 305 impacts the top of the stabilizing groove 202 upward for cushioning.
[0055] Furthermore, a slide rail 102 is provided inside the lower shell 1, and a slider 304 is provided on the side of the shaft core 3. The slider 304 is slidably connected inside the slide rail 102.
[0056] More specifically, two slide rails 102 are vertically opposite to each other on both sides inside the lower shell 1, and two sliders 304 are opposite to each other on both sides of the shaft core 3. When the shaft core 3 is installed inside the lower shell 1, the sliders 304 are slidably connected to the slide rails 102, which improves the stability of the shaft core 3 when it is displaced.
[0057] It should be further explained that the width of the slider 304 matches the width of the slide rail 102, which prevents the slider 304 from wobbling when the height displacement changes, thus further improving the stability of the displacement.
[0058] Furthermore, a locking block 103 is provided on the side of the lower shell 1, and an external buckle 203 is provided on the side of the upper shell 2, which is engaged with the side of the locking block 103.
[0059] More specifically, two locking blocks 103 are provided on both sides of the lower shell 1, and there is a certain distance between the two locking blocks 103. At the same time, two external buckles 203 are provided on both sides of the upper shell 2. The two external buckles 203 are arranged vertically and parallel. When the upper shell 2 and the lower shell 1 are closed, the external buckles 203 are engaged with the side of the locking blocks 103, so as to fix the upper shell 2 and the lower shell 1 after they are closed.
[0060] Furthermore, a moving and stationary plate structure 104 is fixed inside the lower shell 1, and a metal contact 105 is installed at the bottom of the lower shell 1. The moving and stationary plate structure 104 is connected to the metal contact 105, and the moving and stationary plate structure 104 is attached to the side of the shaft core 3.
[0061] More specifically, the moving and stationary plate structure 104 consists of a moving plate and a stationary plate. When the keycap is pressed, causing the switch core 3 to move downward, the moving plate will bend or move, ultimately triggering the keyboard signal.
[0062] Furthermore, a limiting piece 106 is provided on the edge of the top of the lower shell 1, and a positioning hole 107 is provided on the limiting piece 106.
[0063] More specifically, when the switch is installed in the key slot inside the keyboard, the limiting piece 106 of the lower shell 1 is made to fit against the edge of the key slot, thereby ensuring that the switch is installed in place.
[0064] Furthermore, an inner buckle 108 is provided on the side of the lower shell 1, and one end of the inner buckle 108 is engaged with the inner wall of the upper shell 2.
[0065] More specifically, when the upper shell 2 and the lower shell 1 are closed and installed, the inner buckle 108 engages with the inner side of the upper shell 2, thereby improving the stability of the installation of the upper shell 2 and the lower shell 1.
[0066] Example 2
[0067] Please see Figure 1-6 As shown, the shaft structure for reducing the noise of the shaft core hitting the bottom proposed in this embodiment, based on the first embodiment, further includes a stabilizing groove 202 opened in the upper shell 2, a slide rail 102 movably sleeved in the stabilizing groove 202, and a metal sheet 305 provided on the slider 304, which can fit against the top of the stabilizing groove 202 at a set height.
[0068] The width of the slide rail 102 matches the width of the stabilizing groove 202. When the lower shell 1 and the upper shell 2 are closed, the slide rail 102 is fitted into the stabilizing groove 202, thereby improving the stability of the closure of the lower shell 1 and the upper shell 2 and preventing twisting between the upper shell 2 and the lower shell 1.
[0069] Two elastic metal plates 305 are arranged opposite each other on the slider 304, and one end of the metal plate 305 is designed to be inclined upward. When the shaft core 3 is reset upward, the top of the metal plate 305 contacts the top of the stabilizing groove 202 and then gradually deforms downward, thereby playing a buffering role and reducing the noise generated when the shaft core 3 is reset.
[0070] Furthermore, a retaining block 204 is provided on the side of the upper shell 2, and the retaining block 204 is attached to the side of the card block 103.
[0071] More specifically, the upper shell 2 is provided with retaining blocks 204 on both sides. The two retaining blocks 204 are arranged opposite each other. When the upper shell 2 and the lower shell 1 are closed, the retaining blocks 204 are attached between the two locking blocks 103, which improves the stability of the engagement between the outer buckle 203 and the locking block 103.
[0072] Furthermore, a connecting button 306 is provided on the shaft core 3, and the top of the connecting button 306 is higher than the top of the upper shell 2.
[0073] More specifically, the connecting button 306 has a cross-shaped design, and the keycap has a cross-shaped notch at the bottom. The keycap is inserted into the connecting button 306 through the notch to connect the keycap to the switch core 3.
[0074] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A shaft structure for reducing bottoming noise of the shaft core, comprising a lower shell (1), an upper shell (2), and a shaft core (3), characterized in that, The lower shell (1) engages with the upper shell (2), and the shaft core (3) is installed between the lower shell (1) and the upper shell (2); A sleeve (101) is fixed inside the lower shell (1), and a slot (109) is opened at the bottom of the lower shell (1). The slot (109) communicates with the sleeve (101). An upper shell (2) is installed on the lower shell (1). The upper shell (2) is provided with a docking groove (201), and a shaft core (3) is movably connected in the docking groove (201); The bottom of the shaft core (3) is fixed with a shaft rod (301), the shaft rod (301) is movably sleeved in the sleeve (101), and the bottom of the shaft rod (301) is fixed with a magnet (302), the magnet (302) and the slot (109) are arranged vertically opposite each other; A tension spring (303) is movably sleeved on the side of the shaft (301), and the two ends of the tension spring (303) are respectively attached to the interior of the lower shell (1) and the shaft core (3).
2. The shaft structure for reducing bottoming noise of the shaft core according to claim 1, characterized in that: The lower shell (1) is provided with a slide rail (102) and the side of the shaft core (3) is provided with a slider (304) and the slider (304) is slidably connected in the slide rail (102).
3. The shaft structure for reducing bottoming noise of the shaft core according to claim 1, characterized in that: The lower shell (1) is provided with a locking block (103) on its side, and the upper shell (2) is provided with an outer buckle (203) on its side. The outer buckle (203) is engaged with the side of the locking block (103).
4. The shaft structure for reducing bottoming noise of the shaft core according to claim 1, characterized in that: The lower shell (1) is fixed with a moving and stationary plate structure (104), and a metal contact (105) is installed at the bottom of the lower shell (1). The moving and stationary plate structure (104) is connected to the metal contact (105), and the moving and stationary plate structure (104) is attached to the side of the shaft core (3).
5. The shaft structure for reducing bottoming noise of the shaft core according to claim 1, characterized in that: The lower shell (1) has a limiting piece (106) on the edge of the top, and a positioning hole (107) is provided on the limiting piece (106).
6. The shaft structure for reducing bottoming noise of the shaft core according to claim 1, characterized in that: The lower shell (1) is provided with an inner buckle (108) on its side, and one end of the inner buckle (108) is engaged with the inner wall of the upper shell (2).
7. A shaft structure for reducing bottoming noise of the shaft core according to claim 2, characterized in that: The upper shell (2) has a stabilizing groove (202) with opposite sides, and the slide rail (102) is movably sleeved in the stabilizing groove (202).
8. A shaft structure for reducing bottoming noise of the shaft core according to claim 2, characterized in that: The slider (304) is provided with a metal sheet (305), which can fit against the top of the stabilizing groove (202) at a set height.
9. A shaft structure for reducing bottoming noise of the shaft core according to claim 1, characterized in that: The upper shell (2) has a retaining block (204) disposed on the side opposite to the retaining block (103), and the retaining block (204) is attached to the side of the retaining block (103).
10. A shaft structure for reducing bottoming noise of the shaft core according to claim 1, characterized in that: A connecting button (306) is provided on the shaft core (3), and the top of the connecting button (306) is higher than the top of the upper shell (2).