An optimized magnetic shaft structure disposed within the lower cover of the magnetic shaft
By setting multiple semi-circular protrusions and a detachable retaining ring inside the lower cover of the magnetic shaft, the resonance and noise problems when the magnetic shaft button bottoms out are solved, optimizing the user experience and extending the service life of the magnetic shaft.
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
- 2025-07-15
- Publication Date
- 2026-07-31
AI Technical Summary
The existing magnetic shaft causes resonance and noise when the button is bottomed out due to the magnet contacting the entire bottom cover, which affects the user's auditory experience.
Multiple semi-circular protrusions are set inside the lower cover of the magnetic shaft to reduce the collision area between the magnet and the lower cover. The guide groove and detachable fixing ring design enable stable guidance of the magnet and convenient replacement of the protrusions.
It reduces resonance and noise when the button bottoms out, improving the user's auditory experience, and extends the lifespan of the magnetic shaft through convenient bump replacement.
Smart Images

Figure CN224582177U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of magnetic shaft technology, and more specifically, to an optimized magnetic shaft structure disposed within a magnetic shaft lower cover. Background Technology
[0002] Magnetic axes are widely used in various devices that rely on magnetic force to trigger buttons. Their basic structure typically includes components such as a light guide post, a top cover, a core, a magnet, a spring, and a bottom cover. Currently, these magnetic axes generally adopt a design where the entire surface of the magnet is in direct contact with the bottom cover. That is, when the user presses the core, the core moves the magnet downward until the entire surface of the magnet collides with the bottom surface of the bottom cover, thus completing the button bottoming-out action.
[0003] The existing magnet and the bottom cover are in full-surface contact. The contact area when they collide is large, which causes the impact force generated at the moment of collision to cause a strong resonance effect on the large contact surface. This resonance not only amplifies the volume of the collision sound, but also causes more noise in the sound due to the uneven force transmission at each contact point when the large area is in contact, which affects the user's auditory experience during use. Utility Model Content
[0004] To address the aforementioned issues, this application provides an optimized magnetic shaft structure disposed within the lower cover of the magnetic shaft.
[0005] The magnetic shaft optimization structure provided in this application, which is disposed within the lower cover of the magnetic shaft, adopts the following technical solution:
[0006] A magnetic shaft optimization structure disposed within a magnetic shaft lower cover includes a magnetic shaft upper cover and a magnetic shaft lower cover. A light guide post, a shaft core, a magnet, and a spring are disposed between the magnetic shaft upper cover and the magnetic shaft lower cover. A guide groove is provided inside the magnetic shaft lower cover. The structure of the guide groove is adapted to the structure of the magnet. An optimization component is disposed inside the guide groove.
[0007] The optimized components include bumps, with multiple bumps used to reduce the collision area between the bottom of the magnet and the lower cover of the magnetic shaft.
[0008] Furthermore, multiple protrusions are provided on the inner bottom wall of the guide groove, and the multiple protrusions are distributed in a ring array on the inner bottom wall of the guide groove.
[0009] Furthermore, all the protrusions are arranged in a semi-circular shape.
[0010] The above technical solution reduces the collision area between the bottom of the magnet and the lower cover of the magnetic shaft by setting multiple protrusions.
[0011] Furthermore, an annular base plate is fixedly connected to the inner bottom wall of the guide groove, and a fixing ring is provided on one side of the annular base plate, with multiple protrusions fixedly installed on one side of the fixing ring.
[0012] Furthermore, a slot is provided on one side of the annular base plate, which engages with the fixing ring.
[0013] Furthermore, multiple insertion rods are fixedly connected to one side of the fixing ring, and multiple insertion holes are opened on one side of the inner wall of the slot, with the multiple insertion rods being inserted into the corresponding insertion holes respectively.
[0014] Furthermore, each socket is interference-fitted with its corresponding plug.
[0015] The above technical solution improves the ease of maintenance through the detachable design of multiple protrusions.
[0016] Furthermore, rubber sleeves are adhered to the outer walls of multiple protrusions.
[0017] The above technical solution can further buffer the collision between the magnet and the protrusion by setting the rubber sleeve.
[0018] In summary, this application includes at least one of the following beneficial technical effects:
[0019] (1) The present invention can reduce the collision area between the bottom of the magnet and the lower cover of the magnetic shaft by setting multiple protrusions. Compared with the prior art, the magnet is in contact with the lower cover of the magnetic shaft on the whole surface. The reduction of the collision area can effectively reduce the distribution range of the impact force on the contact surface, thereby weakening the resonance effect generated at the moment of collision. At the same time, the semi-circular protrusions distributed in a ring array make the contact between the magnet and the lower cover of the magnetic shaft more balanced, reducing the random additional vibration caused by uneven contact, thereby reducing the volume when the magnetic shaft touches the bottom and optimizing the user's auditory experience.
[0020] (2) This utility model improves the convenience of maintenance by setting multiple detachable protrusions. When the protrusions wear or deform due to long-term use and affect the sound optimization effect of the magnetic shaft bottoming out, there is no need to replace the magnetic shaft bottom cover or the entire magnetic shaft. It is only necessary to replace the fixing ring with new protrusions by simple operation, which greatly simplifies the maintenance process and can ensure the performance of the magnetic shaft for a long time. By replacing the worn protrusions in time, the best collision state between the protrusions and the magnet can always be maintained, ensuring that the collision area is stable when the magnetic shaft bottoms out and the resonance effect is continuously weakened, thereby maintaining the crisp and soft sound optimization effect for a long time, and extending the overall service life and user experience of the magnetic shaft.
[0021] (3) The present invention can further buffer the collision between the magnet and the protrusion by setting the rubber sleeve, reduce the noise generated by rigid contact, and at the same time enhance the wear resistance of the protrusion and extend its service life. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0023] Figure 2 This is an exploded view of the overall structure of this utility model;
[0024] Figure 3 This is a schematic diagram of the internal structure of the guide groove of this utility model;
[0025] Figure 4 This is a cross-sectional view of the overall structure of the lower cover of this utility model;
[0026] Figure 5 This is a schematic diagram of the protrusion mounting structure of this utility model;
[0027] Figure 6 This is a schematic diagram of the overall structure of the protrusion of this utility model;
[0028] Figure 7 For the present utility model Figure 6 Enlarged view of the structure at point A.
[0029] Explanation of reference numerals in the attached diagram: 1. Top cover; 2. Light guide post; 3. Bottom cover; 4. Shaft core; 5. Magnet; 6. Spring; 7. Guide groove; 8. Protrusion; 9. Annular base plate; 10. Fixing ring; 11. Insert rod; 12. Slot; 13. Insertion hole; 14. Rubber sleeve. Detailed Implementation
[0030] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0031] Example 1
[0032] Reference Figures 1-5 A magnetic shaft optimization structure set inside the magnetic shaft lower cover includes a magnetic shaft upper cover 1 and a magnetic shaft lower cover 3. A light guide post 2, a shaft core 4, a magnet 5 and a spring 6 are provided between the magnetic shaft upper cover 1 and the magnetic shaft lower cover 3. A guide groove 7 is opened inside the magnetic shaft lower cover 3. The structure of the guide groove 7 is adapted to the structure of the magnet 5. An optimization component is provided inside the guide groove 7.
[0033] The optimization components include bumps 8, and the number of bumps 8 is set to multiple. Multiple bumps 8 are used to reduce the collision area between the bottom of the magnet 5 and the magnetic shaft cover 3.
[0034] Reference Figures 1-5 Multiple protrusions 8 are provided on the inner bottom wall of the guide groove 7. The multiple protrusions 8 are arranged in a ring array on the inner bottom wall of the guide groove 7. The multiple protrusions 8 are arranged in a semi-circular shape.
[0035] The collision area between the bottom of the magnet 5 and the magnetic shaft cover 3 is reduced by setting multiple protrusions 8. Specifically, when the user presses the shaft core 4, the shaft core 4 will drive the magnet 5 to move downward along the guide groove 7 inside the magnetic shaft cover 3. Since the multiple semi-circular protrusions 8 on the inner bottom wall of the guide groove 7 are arranged in a ring array and the protrusions 8 are higher than the inner bottom wall plane of the guide groove 7, when the magnet 5 moves to the bottom position, its bottom will not directly contact the inner bottom wall plane of the guide groove 7, but will first collide with these protrusions 8, thereby reducing the collision area between the bottom of the magnet 5 and the magnetic shaft cover 3.
[0036] The arrangement of multiple protrusions 8 reduces the collision area between the bottom of the magnet 5 and the lower cover 3 of the magnetic shaft. Compared to the existing technology where the entire surface of the magnet 5 contacts the lower cover 3 of the magnetic shaft, the reduced collision area effectively reduces the distribution range of the impact force on the contact surface, thereby weakening the resonance effect generated at the moment of collision. At the same time, the semi-circular protrusions 8 arranged in a ring array make the contact between the magnet 5 and the lower cover 3 of the magnetic shaft more balanced, reducing the random additional vibration caused by uneven contact, thereby reducing the volume when the magnetic shaft touches the bottom and optimizing the user's auditory experience. In addition, the design of the guide groove 7, which is adapted to the structure of the magnet 5, provides stable guidance for the movement of the magnet 5, preventing the magnet 5 from deviating during movement and ensuring the accurate collision position between the protrusions 8 and the magnet 5, further ensuring the stability of the optimization effect.
[0037] Working principle: When the user presses the shaft core 4, the shaft core 4 will drive the magnet 5 to move downward along the guide groove 7 inside the magnetic shaft cover 3. Since the multiple semi-circular protrusions 8 on the inner bottom wall of the guide groove 7 are arranged in a ring array and the protrusions 8 are higher than the inner bottom wall plane of the guide groove 7, when the magnet 5 moves to the bottom position, its bottom will not directly contact the inner bottom wall plane of the guide groove 7, but will first collide with these protrusions 8, thereby reducing the collision area between the bottom of the magnet 5 and the magnetic shaft cover 3.
[0038] Example 2
[0039] Reference Figure 4 Figure 7 The difference between this embodiment and embodiment one is that an annular base plate 9 is fixedly connected to the inner bottom wall of the guide groove 7, a fixing ring 10 is provided on one side of the annular base plate 9, and multiple protrusions 8 are fixedly installed on one side of the fixing ring 10. A slot 12 is opened on one side of the annular base plate 9, and the slot 12 is engaged with the fixing ring 10. Multiple insertion rods 11 are fixedly connected to one side of the fixing ring 10. Multiple insertion holes 13 are opened on one side of the inner wall of the slot 12, and the multiple insertion rods 11 are respectively inserted into the corresponding insertion holes 13. Each insertion hole 13 is interference-fitted with the corresponding insertion rod 11.
[0040] The detachable design of multiple protrusions 8 allows for replacement of the protrusions 8 after prolonged use. Specifically, when multiple protrusions 8 show signs of wear or deformation after extended use and require replacement, first, gently pry the retaining ring 10 using a suitable tool (such as a small pry bar). Since the retaining ring 10 is engaged with the slot 12 on one side of the annular base plate 9, the prying process allows the retaining ring 10 to gradually disengage from the slot 12. Simultaneously, multiple inserts 11 on one side of the retaining ring 10 will be pulled out from the corresponding insertion holes 13 on the inner wall of the slot 12 (because the insertion holes 13 are connected to the inserts). The rod 11 is an interference fit, and when pulling it out, a moderate force needs to be applied to overcome the friction of the mating surface, so as to remove the retaining ring 10 with multiple protrusions 8 from the annular base plate 9 as a whole; then, take a new retaining ring 10 with intact protrusions 8, align the multiple insert rods 11 on the retaining ring 10 with the multiple insertion holes 13 in the slot 12 of the annular base plate 9, and then apply pressure to insert the insert rods 11 one by one into the corresponding insertion holes 13. The interference fit ensures that the insert rods 11 and the insertion holes 13 are tightly connected, and at the same time, the retaining ring 10 is fully inserted into the slot 12, thus completing the replacement and installation of the protrusions 8.
[0041] The detachable design of multiple protrusions 8 enhances maintenance convenience. When the protrusions 8 wear or deform due to prolonged use, affecting the sound optimization effect of the magnetic shaft bottoming out, there is no need to replace the magnetic shaft bottom cover 3 or the entire magnetic shaft. Simply replace the retaining ring 10 with the new protrusions 8 with a simple operation. This greatly simplifies the maintenance process and ensures the long-term performance of the magnetic shaft. By replacing the worn protrusions 8 in a timely manner, the optimal collision state between the protrusions 8 and the magnet 5 can always be maintained, ensuring a stable collision area when the magnetic shaft bottoms out and continuously reducing the resonance effect. This maintains a crisp and mellow sound optimization effect for a long time, extending the overall service life and user experience of the magnetic shaft.
[0042] Reference Figure 7 The outer walls of multiple protrusions 8 are all bonded with rubber sleeves 14.
[0043] The rubber sleeve 14 further buffers the collision between the magnet 5 and the protrusion 8, reduces the noise generated by rigid contact, and enhances the wear resistance of the protrusion 8, extending its service life.
[0044] Working principle: When multiple protrusions 8 need to be replaced due to wear, deformation, or other issues after prolonged use, firstly, gently pry the retaining ring 10 with a suitable tool (such as a small pry bar). Since the retaining ring 10 is engaged with the slot 12 on one side of the annular base plate 9, the retaining ring 10 can gradually disengage from the slot 12 during the prying process. At the same time, multiple inserts 11 on one side of the retaining ring 10 will be pulled out from the corresponding insertion holes 13 on the inner wall of the slot 12. (Because the insertion holes 13 and the inserts 11 are interference fit, moderate force needs to be applied when pulling them out.) The force is used to overcome the friction of the mating surfaces, thereby removing the retaining ring 10 with multiple protrusions 8 from the annular base plate 9 as a whole; then, a new retaining ring 10 with intact protrusions 8 is taken, and the multiple insert rods 11 on the retaining ring 10 are aligned with the multiple insertion holes 13 in the slot 12 of the annular base plate 9. Then, pressure is applied to insert the insert rods 11 one by one into the corresponding insertion holes 13, and the interference fit is used to ensure that the insert rods 11 and the insertion holes 13 are tightly connected. At the same time, the retaining ring 10 is fully inserted into the slot 12, completing the replacement and installation of the protrusions 8.
[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A magnetic shaft optimization structure disposed within a lower cover of a magnetic shaft, comprising an upper cover (1) and a lower cover (3) of a magnetic shaft, characterized in that, A light guide post (2), a shaft core (4), a magnet (5), and a spring (6) are provided between the upper cover (1) and the lower cover (3) of the magnetic shaft. A guide groove (7) is provided inside the lower cover (3). The structure of the guide groove (7) is adapted to the structure of the magnet (5). An optimization component is provided inside the guide groove (7). The optimization component includes bumps (8), and the number of bumps (8) is set to multiple, and the multiple bumps (8) are used to reduce the collision area between the bottom of the magnet (5) and the magnetic shaft cover (3).
2. The optimized magnetic shaft structure disposed within the lower cover of the magnetic shaft according to claim 1, characterized in that: Multiple protrusions (8) are disposed on the inner bottom wall of the guide groove (7), and the multiple protrusions (8) are distributed in a ring array on the inner bottom wall of the guide groove (7).
3. The optimized magnetic shaft structure disposed within the lower cover of the magnetic shaft according to claim 2, characterized in that: All of the protrusions (8) are arranged in a semi-circular shape.
4. The magnetic shaft optimization structure disposed within the lower cover of the magnetic shaft according to claim 1, characterized in that: The inner bottom wall of the guide groove (7) is fixedly connected to an annular base plate (9), and a fixing ring (10) is provided on one side of the annular base plate (9). Multiple protrusions (8) are fixedly installed on one side of the fixing ring (10).
5. The magnetic shaft optimization structure disposed within the lower cover of the magnetic shaft according to claim 4, characterized in that: A slot (12) is provided on one side of the annular base plate (9), and the slot (12) is engaged with the fixing ring (10).
6. The magnetic shaft optimization structure disposed within the lower cover of the magnetic shaft according to claim 5, characterized in that: A plurality of insert rods (11) are fixedly connected to one side of the fixing ring (10), and a plurality of insertion holes (13) are provided on one side of the inner wall of the slot (12), and the plurality of insert rods (11) are respectively inserted into the corresponding insertion holes (13).
7. The magnetic shaft optimization structure disposed within the lower cover of the magnetic shaft according to claim 6, characterized in that: Each of the aforementioned sockets (13) is in an interference fit with the corresponding insert (11).
8. The optimized magnetic shaft structure disposed within the lower cover of the magnetic shaft according to claim 7, characterized in that: The outer walls of the multiple protrusions (8) are all bonded with rubber sleeves (14).