Detachable shaft body structure and keyboard

Abstract

The utility model relates to a detachable shaft body structure and keyboard, the detachable shaft body structure comprises a shaft body upper part and a shaft body lower part, the shaft body lower part comprises an outer base, the shaft body upper part is installed on the outer base, and the outer base is fixed on a PCB through welding. The detachable shaft body structure provided by the utility model not only provides a hot plug function, but also can overcome the technical problem that a traditional magnetic shaft cannot be made into a soft elastic structure through the structure, the upper part of the shaft body is fixed on the PCB through the lower part of the shaft body, and a positioning plate necessary for a traditional hard elastic magnetic shaft is removed, so that the magnetic shaft is made into the soft elastic structure; and the outer base is connected with the circuit board with the inductor, so that the structure of the keyboard can be simplified, and the electric control reliability is improved.

Description

Technical Field

[0001] The utility model relates to the field of keyboard shafts, and more particularly to a detachable shaft structure and a keyboard. Background Art

[0002] The magnetic axis keyboard technology, based on its unique non-contact Hall effect principle, abandons the pin design of traditional mechanical shafts and relies on the stable support of the positioning plate to ensure the precise positioning of the key shafts. In this architecture, the Hall sensors of the key shafts are cleverly embedded in the PCB circuit board, thus achieving more stable signal transmission and longer service life. However, an inherent characteristic of this design also poses a challenge: due to the extremely high precision requirements of the Hall sensors, the positioning plate must maintain rigidity to prevent the tiny displacement of the key shafts during the triggering process, which means that traditional magnetic axis keyboards cannot achieve a soft and elastic structure. This limitation has drawn wide attention among keyboard enthusiasts who pursue the ultimate feel, and the industry urgently needs to seek a breakthrough to meet the dual pursuit of keyboard comfort and performance in the market. Summary of the Utility Model

[0003] In view of this, the utility model provides a detachable shaft structure, which not only provides a hot-swap function, but also, through this structure, can overcome the technical problem that traditional magnetic axes cannot be made into a soft and elastic structure. The upper part of the shaft is fixed on the PCB circuit board through the lower part of the shaft, removing the positioning plate that is necessary for traditional hard and elastic magnetic axes, thereby making the magnetic axis into a soft and elastic structure, greatly improving the keyboard comfort.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A detachable shaft structure includes an upper part of the shaft and a lower part of the shaft. The lower part of the shaft includes an outer base, and the upper part of the shaft is installed on the outer base, and the outer base is fixed to the PCB by welding.

[0006] The detachable shaft structure not only provides a hot-swap function, but also, through this structure, can overcome the technical problem that traditional magnetic axes cannot be made into a soft and elastic structure. The upper part of the shaft is fixed on the PCB circuit board through the lower part of the shaft, removing the positioning plate that is necessary for traditional hard and elastic magnetic axes, thereby making the magnetic axis into a soft and elastic structure, greatly improving the keyboard comfort. In addition, due to the removal of the positioning plate, the influence of the installation error, deformation, etc. of the positioning plate on the accuracy can be avoided.

[0007] Preferably, the connection between the outer base and the PCB is welding.

[0008] Welding is a method of firmly connecting metal components together, which can provide excellent electrical continuity and mechanical strength. When the outer base is welded to the PCB through pads, it can ensure that even under harsh working conditions, such as high temperature, vibration or shock conditions, the connection will not easily loosen or break, thus ensuring the long-term stable operation of the device.

[0009] Preferably, the lower end of the outer base has pads and is welded to the PCB through the pads.

[0010] Pad welding provides strong mechanical support, enabling the outer base to firmly adhere to the PCB even under external force or vibration.

[0011] Preferably, the lower end of the outer base has fixing posts, and the fixing posts are inserted through through-holes preset on the PCB.

[0012] Through the through-holes pre-drilled on the PCB, the fixing posts can be accurately inserted to ensure the exact position of the outer base. This precise alignment not only facilitates subsequent welding or other connection processes but also ensures the correct spacing between electronic components, avoiding electrical problems or mechanical interference caused by position offset.

[0013] Preferably, the lower end of the outer base has fixing posts, the fixing posts are inserted through through-holes preset on the PCB, and the fixing posts and the PCB are fixed by welding.

[0014] The design of the fixing posts provides a strong mechanical connection method. By inserting the fixing posts through the through-holes on the PCB and then fixing them by welding, a firm bond can be ensured between the outer base and the PCB. This bonding method can withstand large mechanical stresses, including tension, compression and bending, thereby improving the structural strength and durability of the entire electronic device.

[0015] Preferably, there are four fixing posts, which are respectively located at the four corners of the outer base and are closely inserted into the through-holes.

[0016] The fixing posts distributed at the four corners act like the pillars of a building, providing balanced support points for the outer base. This design ensures a very high structural integrity in the connection between the outer base and the PCB. Even when subjected to external pressure or vibration, it can remain stable and is not prone to distortion or breakage, thereby improving the durability and reliability of the entire electronic device.

[0017] Preferably, a circuit board is connected to the bottom of the outer base, a sensor is installed on the circuit board, and the circuit board is electrically connected to the PCB through current-conducting posts.

[0018] The outer base is connected to the circuit board with a built-in sensor, which can simplify the keyboard structure and improve the reliability of the electronic control. The sensor is installed on the circuit board, and there are through holes on the circuit board, which are connected to the fixing posts on the upper surface of the outer base. The connection can be achieved by interference fixing, welding or other methods. A guiding post is installed on the circuit board and connected to the PCB through the guiding post, ensuring a stable connection between the sensor and the shaft body, enabling the sensor to accurately sense the movement of the shaft body, and improving the stability and reliability of the device. Whether in long-term use or in harsh environments, it can maintain good performance. This connection method is not affected by problems such as PCB deformation. Even if the PCB deforms, the relative position between the sensor and the shaft body can remain stable. This design improves the stability and service life of the device. The performance of the entire device is more reliable, providing a better user experience for users.

[0019] The sensor can be a Hall sensor or other sensors, and can be adapted to a variety of sensors. Whether it is a magnetic shaft or other types of shaft bodies, good sensing effects can be obtained. This design improves the flexibility and adaptability of the device, meeting the needs of different users.

[0020] Preferably, the upper part of the shaft body is detachably connected to the outer base.

[0021] The design of detachable connection allows the separation between the upper part of the shaft body and the outer base, which is particularly convenient when maintenance or upgrade is required. Technicians can easily disassemble the upper part of the shaft body for cleaning, repair or replacement without completely disassembling the entire device, which greatly reduces the maintenance time and cost.

[0022] Preferably, the upper part of the shaft body is detachably connected to the outer base by a buckle. The upper part of the shaft body is in interference fit with the outer base.

[0023] The buckle connection provides a quick and intuitive assembly method. Workers or automated equipment only need to align the upper part of the shaft body with the buckle position on the outer base and press gently to achieve a firm connection. Similarly, when disassembling, only appropriate force needs to be applied to easily unlock the buckle and remove the upper part of the shaft body. This design greatly simplifies the operation process and improves the efficiency of assembly and maintenance. Compared with traditional connection methods such as bolts and screws, the buckle connection does not require any additional tools such as screwdrivers or wrenches. This means that during the entire assembly, disassembly or replacement process, the time for searching and using tools can be saved, and at the same time, the trouble of tool carrying and management is reduced.

[0024] Preferably, the outer base is an integrally formed overall structure of a plastic outer frame and a metal positioning frame. The metal positioning frame is embedded in the inner wall of the plastic outer frame, and the welding part between the outer base and the PCB is an integral structure with the metal positioning frame.

[0025] The metal positioning frame plays a role in reinforcement and limiting. Through the integrated design of the plastic outer frame and the metal positioning frame, the outer base achieves the best combination of material properties. The plastic outer frame provides the advantages of light weight, insulation, and cost-effectiveness, while the metal positioning frame brings excellent thermal conductivity, electromagnetic shielding ability, and mechanical strength. This combination enables the outer base to balance multiple performance requirements and meet the requirements for versatility in modern electronic devices. The metal positioning frame is embedded in the inner wall of the plastic outer frame, forming a strong composite structure. This structure not only improves the overall rigidity of the outer base but also can effectively resist external impacts and vibrations, ensuring the structural stability in various working environments.

[0026] A keyboard includes the detachable shaft structure as described above.

[0027] The beneficial effects of the present utility model compared with the prior art are:

[0028] The detachable shaft structure of the present utility model not only provides the hot-swap function but also, through this structure, can overcome the technical problem that traditional magnetic shafts cannot be made into a soft elastic structure. The upper part of the shaft is fixed on the PCB circuit board through the lower part of the shaft, removing the positioning plate that is necessary for traditional hard elastic magnetic shafts, thus making the magnetic shaft into a soft elastic structure and greatly improving the keyboard comfort. In addition, since the positioning plate is removed, the influence of positioning plate installation errors, deformation, etc. on the accuracy can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0030] Figure 1 It is an exploded view of the detachable shaft structure of Embodiment 1 of the present utility model.

[0031] Figure 2 It is a partial exploded view of the detachable shaft structure of Embodiment 1 of the present utility model.

[0032] Figure 3 It is a partial exploded view of the detachable shaft structure of Embodiment 1 of the present utility model.

[0033] Figure 4 It is an exploded view of the outer base of Embodiment 2 of the present utility model.

[0034] Figure 5 It is an exploded view of the outer base of Embodiment 2 of the present utility model.

[0035] Figure 6Explosion diagram of the outer base in Embodiment 3 of the present utility model.

[0036] Figure 7 Structural diagram of the outer base in Embodiment 3 of the present utility model.

[0037] Figure 8 Cross-sectional view of the detachable shaft structure in Embodiment 4 of the present utility model.

[0038] Figure 9 Explosion diagram of the detachable shaft structure in Embodiment 4 of the present utility model.

[0039] Figure 10 Schematic diagram of the sensor in Embodiment 4 of the present utility model being directly attached to the circuit board.

[0040] Figure 11 Schematic diagram of the sensor in Embodiment 4 of the present utility model being attached to the back of the circuit board.

[0041] Figure 12 Partial structural diagram of the detachable shaft structure in Embodiment 4 of the present utility model. Detailed implementation manners

[0042] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the accompanying drawings herein can be arranged and designed in various different configurations.

[0043] Therefore, the detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0044] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In the description of the embodiments of the present application, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", etc. are based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships in which the product of the present application is usually placed during use, or the orientation or positional relationships commonly understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0045] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments may be combined with each other.

[0046] The technical solutions in this application will be described below with reference to the accompanying drawings. Embodiment 1

[0047] This embodiment provides a detachable shaft structure, including an upper shaft part 200 and a lower shaft part. The lower shaft part includes an outer base. The upper shaft part 200 is installed on the outer base 100, and the outer base 100 is fixed to the PCB by welding. The upper shaft part 200 includes a base 210, an upper cover 220, a button 230, a magnet 240, a light guide column 250, and a spring 260.

[0048] The detachable shaft structure not only provides a hot-pluggable function, but also overcomes the technical problem that traditional magnetic shafts cannot be made into a soft elastic structure through this structure. The upper shaft part is fixed to the PCB circuit board through the lower shaft part, removing the positioning plate that is necessary for traditional hard elastic magnetic shafts, thereby making the magnetic shaft into a soft elastic structure and greatly improving the keyboard comfort. In addition, since the positioning plate is removed, the influence of positioning plate installation errors, deformation, etc. on the accuracy can be avoided.

[0049] In this embodiment, the connection between the outer base 100 and the PCB 300 is welding.

[0050] Welding is a method of firmly connecting metal components together, which can provide excellent electrical continuity and mechanical strength. When the outer base 100 is welded to the PCB through pads, it can ensure that the connection will not loosen or break easily even under harsh working conditions, such as high temperature, vibration, or impact conditions, thus ensuring the long-term stable operation of the device.

[0051] In this embodiment, the lower end of the outer base 100 has fixing posts 110, and the fixing posts 110 are inserted through through holes 310 preset on the PCB.

[0052] Through the through holes drilled in advance on the PCB, the fixing posts 110 can be accurately inserted to ensure that the position of the outer base 100 is accurate. This precise alignment is not only beneficial for subsequent welding or other connection processes, but also can ensure the correct spacing between electronic components and avoid electrical problems or mechanical interference caused by position deviation.

[0053] In this embodiment, the lower end of the outer base 100 has fixing posts 110, the fixing posts 110 are inserted through through holes 310 preset on the PCB, and the fixing posts 110 are fixed to the PCB by welding.

[0054] The design of the fixing posts 110 provides a strong mechanical connection method. By inserting the fixing posts 110 through the through-holes on the PCB and then welding them in place, a firm bond between the outer base 100 and the PCB can be ensured. This bonding method can withstand large mechanical stresses, including tension, compression, and bending, thereby enhancing the structural strength and durability of the entire electronic device. The fixing posts 110 and the outer base 100 can be fixed by interference fit or other methods such as welding and riveting. The PCB and the outer base 100 can also be fixed by interference fit or other methods such as welding and riveting.

[0055] In this embodiment, there are four fixing posts 110, which are respectively located at the four corners of the outer base 100 and are tightly inserted into the through-holes.

[0056] The fixing posts 110 distributed at the four corners are like the pillars of a building, providing balanced support points for the outer base 100. This design ensures a very high structural integrity in the connection between the outer base 100 and the PCB. Even when subjected to external pressure or vibration, it can remain stable and is not prone to distortion or fracture, thereby enhancing the durability and reliability of the entire electronic device.

[0057] In this embodiment, the upper part 200 of the shaft body is detachably connected to the outer base 100.

[0058] The detachable connection design allows for the separation between the upper part 200 of the shaft body and the outer base 100, which is particularly convenient when maintenance or upgrading is required. Technicians can easily disassemble the upper part 200 of the shaft body for cleaning, repair, or replacement without having to completely disassemble the entire device, which greatly reduces the maintenance time and cost.

[0059] In this embodiment, the upper part 200 of the shaft body is detachably connected to the outer base 100 by a snap fastener.

[0060] The snap fastener connection provides a quick and intuitive assembly method. Workers or automated equipment only need to align the upper part 200 of the shaft body with the snap fastener position on the outer base 100 and press gently to achieve a firm connection. Similarly, when disassembling, only an appropriate force needs to be applied to easily unlock the snap fastener and remove the upper part 200 of the shaft body. This design greatly simplifies the operation process and improves the efficiency of assembly and maintenance. Compared with traditional connection methods such as bolts and screws, the snap fastener connection does not require any additional tools such as screwdrivers or wrenches. This means that during the entire assembly, disassembly, or replacement process, the time for searching and using tools can be saved, and at the same time, the trouble of tool carrying and management is reduced.

[0061] In this embodiment, the outer base 100 is a plastic outer frame, which provides the advantages of light weight, insulation, and high cost-effectiveness. Embodiment 2

[0062] In this embodiment, the outer base 100 is an integrally formed overall structure of a plastic outer frame and a metal positioning frame 120. The metal positioning frame 120 is embedded in the inner wall of the plastic outer frame, and the welding part of the outer base 100 and the PCB is an integral structure with the metal positioning frame 120. In other embodiments, such as Figure 5 , the metal positioning frame can be replaced with a carbon fiber frame 121 to achieve the effect of enhancing the strength of the outer base.

[0063] Through the integrated design of the plastic outer frame and the metal positioning frame, the outer base 100 achieves the best combination of material properties. The plastic outer frame provides the advantages of light weight, insulation, and cost-effectiveness, while the metal positioning frame brings excellent thermal conductivity, electromagnetic shielding ability, and mechanical strength. This combination enables the outer base 100 to balance multiple performance requirements and meet the requirements of modern electronic devices for versatility. The metal positioning frame is embedded in the inner wall of the plastic outer frame, forming a strong composite structure. This structure not only improves the overall rigidity of the outer base 100 but also can effectively resist external impacts and vibrations, ensuring the structural stability in various working environments. Embodiment 3

[0064] In this embodiment, the lower end of the outer base 100 has pads 140, and is welded to the PCB through the pads.

[0065] Pad welding provides a strong mechanical support, enabling the outer base 100 to be firmly attached to the PCB even under external forces or vibrations. Embodiment 4

[0066] This embodiment provides a detachable shaft structure, including an upper shaft body 200 and a lower shaft body. The lower shaft body includes an outer base. The upper shaft body 200 is installed on the outer base 100, and the outer base 100 is fixed to the PCB 300 by welding. The upper shaft body 200 includes a base 210, an upper cover 220, a button 230, a magnet 240, and a spring 260. The lower end of the outer base 100 has fixing posts 110, and the fixing posts 110 are inserted through through holes 310 preset on the PCB. A circuit board 400 is connected to the bottom of the outer base 100, a Hall sensor 410 is attached to the back of the circuit board 400, and the circuit board 400 is electrically connected to the PCB 300 through current conducting posts 420. The number of current conducting posts is at least one or more. In other embodiments, the sensor can also be attached to the circuit board face-up.

[0067] The sensor is installed on the circuit board. There are through holes on the circuit board, which are connected to the fixing posts on the outer base. It can be fixed by interference fit, welding or other methods. A diversion post is installed on the circuit board and is connected to the PCB through the diversion post, ensuring a stable connection between the sensor and the shaft body, enabling the sensor to accurately sense the movement of the shaft body, improving the stability and reliability of the device. Whether in long-term use or in a harsh environment, it can maintain good performance. This connection method is not affected by problems such as PCB deformation. Even if the PCB deforms, the relative position between the Hall sensor and the shaft body can remain stable. This design improves the stability and service life of the device. The performance of the entire device is more reliable, providing a better user experience for users.

[0068] In other embodiments, the Hall sensor can be replaced with other sensors. This replaceable design enables the device to be adapted to a variety of sensors. Whether it is a magnetic shaft or other types of shaft bodies, good sensing effects can be obtained. This design improves the flexibility and adaptability of the device, meeting the needs of different users.

[0069] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A detachable shaft structure, characterized in that: The invention comprises an upper shaft body and a lower shaft body, wherein the lower shaft body comprises an outer base, the upper shaft body is mounted on the outer base, and the outer base is fixed on the PCB by welding.

2. The detachable shaft structure according to claim 1, characterized in that: The outer base and the PCB are welded.

3. The detachable shaft structure according to claim 2, characterized in that: The lower end of the outer base is provided with a soldering pad, which is soldered on the PCB.

4. The detachable shaft structure according to claim 2, characterized in that: The lower end of the outer base is provided with a fixing column, and the fixing column is inserted into a through hole preset on the PCB.

5. The detachable shaft structure according to claim 2, characterized in that: The lower end of the outer base is provided with a fixing column, which is inserted into a through hole preset on the PCB, and the fixing column is fixed to the PCB by welding.

6. The detachable shaft structure according to claim 1, characterized in that: The bottom of the outer base is connected with a circuit board, a sensor is installed on the circuit board, and the circuit board is electrically connected with the PCB through a guide column.

7. The detachable shaft structure according to claim 1, characterized in that: The upper part of the shaft body is detachably connected to the outer base.

8. The detachable shaft structure according to claim 1, characterized in that: The upper part of the shaft body is detachably connected to the outer base through a buckle.

9. The detachable shaft structure according to claim 1, characterized in that: The outer base is an integral structure formed by integrating a plastic outer frame and a metal positioning frame. The metal positioning frame is embedded in the inner wall of the plastic outer frame. The outer base and the PCB welding part are an integral structure with the metal positioning frame.

10. A keyboard, characterized in that: It comprises a detachable shaft structure as described in any one of claims 1 to 9.

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