Welding magnetic shaft and welding optical shaft

Through welding magnetic shaft design, the tight connection between the fixed column and the PCB board is solved, and the limitations of the traditional magnetic shaft keyboard in terms of feel, sound and reliability are achieved, achieving higher input accuracy and better user experience.

CN222965986UActive Publication Date: 2025-06-10HUIZHOU TRANTEK ELECTRONICS
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202421992128.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-16
Publication Date
2025-06-10
Estimated Expiration
2034-08-16

AI Technical Summary

Technical Problem

Traditional magnetic shaft keyboards have limitations in hand feel adjustment, sound quality and long-term use reliability, and the accuracy of the positioning plate affects the accuracy of magnetic induction.

Method used

The welding magnetic shaft design is adopted, and the tight connection between the fixed column and the PCB board is closely connected, and the spot welding technology is used to ensure the stable fixation of the shaft body and the PCB board, maintaining a constant distance between the magnet and the Hall sensor.

Benefits of technology

Improves the accuracy and reliability of keyboard input, provides a more comfortable feel and a more pleasant sound, and avoids magnetic induction changes caused by positioning board problems.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222965986U_ABST
    Figure CN222965986U_ABST
Patent Text Reader

Abstract

The welding magnetic shaft comprises a shell and a magnetic shaft body installed on the shell, the shell comprises a base fixedly connected with a PCB and an upper cover connected with the base, a fixing column is arranged at the bottom of the base, a through hole is dug in the PCB, and the fixing column penetrates through the through hole and then is fixed through spot welding. According to the welding magnetic shaft and the welding optical shaft, the base is tightly connected with the PCB through the fixing column, the through hole is formed in the PCB in a digging mode, an accurate penetrating channel is provided for the fixing column, then the fixing column is firmly fixed through the spot welding technology, and stable and accurate connection is formed. According to the utility model, the shaft body and the PCB are directly and firmly fixed together, so that the distance between the magnet and the Hall sensor is kept constant, which is crucial for maintaining stable magnetic induction intensity and ensures that each key operation can obtain consistent and accurate feedback.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the field of shafts, and in particular, to a welded magnetic shaft and a welded optical shaft. Background Art

[0002] The design of traditional magnetic shaft keyboards relies on the support of a positioning plate. This structure limits the flexibility of feel adjustment, resulting in a generally hard key feel and a lack of delicate tactile feedback. At the same time, due to the direct physical contact between the magnetic shaft and the positioning plate, the sound generated during keystrokes is often not pleasant enough, lacking the crisp sound unique to mechanical keyboards that is pleasing to the ear.

[0003] More critically, the material and manufacturing precision of the positioning plate have a direct impact on the overall performance of the keyboard. Once the positioning plate is deformed, even a slight deformation may cause the shift of the magnetic induction area, thereby affecting the reading accuracy of the magnetic shaft. This loss of accuracy will be directly reflected in the input performance of the keyboard, possibly resulting in inaccurate key responses or even mistriggers, seriously damaging the user's typing experience and input efficiency.

[0004] Therefore, these limitations in the design of traditional magnetic shaft keyboards not only restrict the diversity of feel adjustment but also affect their sound quality and long-term reliability. In today's pursuit of higher keyboard performance and user experience, these drawbacks are particularly prominent, prompting the industry to continuously explore more advanced and user-friendly keyboard design solutions. Summary of the Utility Model

[0005] In view of this, the utility model provides a welded magnetic shaft. The base is tightly connected to the PCB board through fixing columns. The through holes dug on the PCB board provide a precise penetration channel for the fixing columns, and then they are firmly fixed through spot welding technology, forming a stable and precise connection. By directly and firmly fixing the shaft body to the PCB board, it ensures that the distance between the magnet and the Hall sensor remains constant, which is crucial for maintaining a stable magnetic induction intensity and ensuring consistent and accurate feedback for each key operation.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] A welded magnetic shaft, comprising a housing and a magnetic shaft body installed in the housing. The housing includes a base fixedly connected to the PCB board and an upper cover connected to the base. Fixing columns are provided at the bottom of the base, and through holes are dug on the PCB board. The fixing columns pass through the through holes and are fixed by spot welding.

[0008] The base is tightly connected to the PCB board through fixing posts. The through holes dug on the PCB board provide a precise penetration channel for the fixing posts, and then they are firmly fixed through spot welding technology, forming a stable and precise connection. By directly and firmly fixing the shaft body to the PCB board, the distance between the magnet and the Hall sensor is ensured to remain constant, which is crucial for maintaining a stable magnetic induction intensity. This constant distance eliminates performance fluctuations caused by assembly errors, ensuring consistent and accurate feedback for each key operation. Since the welding magnetic shaft can ensure that the distance between the magnet and the Hall sensor remains constant, the magnetic shaft can adopt a soft and elastic structure, which means that the magnetic shaft keyboard can provide a more comfortable feel and a more pleasant sound when typing. Traditional keyboards often rely on a positioning plate to fix the shaft body, but this may cause deformation or inclination during the installation process, thereby affecting the accuracy of magnetic induction. The welding magnetic shaft abandons this design and adopts a non-positioning plate solution, fundamentally avoiding magnetic induction changes caused by positioning plate problems and greatly improving the input accuracy of the keyboard. Due to the strict control of the relative positions of the magnet and the Hall sensor, the input accuracy of the keyboard is significantly improved. When users are typing quickly or playing games, they can rely on each key press to get an accurate and timely response, which is undoubtedly a great blessing for players and professionals who pursue an ultimate operation experience.

[0009] Preferably, mounting holes are dug at the bottom of the base, and the fixing posts are connected in the mounting holes.

[0010] The design of the mounting holes at the bottom of the base reflects a profound understanding of structural stability and installation convenience. This design not only ensures a stable connection between the base and the ground or other supporting surfaces, but also through careful hole layout, enables the fixing posts to be precisely embedded therein, thus providing a firm and easily adjustable installation method. Such a design reduces the complexity during the installation process, improves work efficiency, and also ensures the stability of the device during use, providing a solid guarantee for the long-term operation of the device.

[0011] Preferably, the outer shape of the fixing post is a cylinder or a square post.

[0012] The selection of the outer shape of the fixing post, whether it is a cylinder or a square post, is based on a comprehensive consideration of functionality and aesthetics. The cylindrical fixing post has good anti-stress concentration ability due to its smooth curved surface, which can effectively reduce the risk of damage caused by external forces. While the square post, due to its distinct edges and corners, can provide better positioning and supporting effects in certain specific situations. This diverse selection meets the personalized needs in different application scenarios, demonstrating the flexibility and forward-looking nature of the design.

[0013] Preferably, the fixing post is made of a metal material.

[0014] The fixing posts are made of metal materials, which reflects the emphasis on durability and strength requirements. Metal materials, with their excellent mechanical properties and corrosion resistance, have become the first choice in many high-demand environments. They can withstand heavy loads without deformation and resist the erosion of harsh environments, ensuring the long-term reliable operation of the equipment. In addition, the wide availability and relatively easy processing of metal materials also reduce production costs and enhance the market competitiveness of the products.

[0015] Preferably, the fixing posts can be replaced with metal pads.

[0016] The design that the fixing posts can be replaced with metal pads is a well-considered choice for the convenience of maintenance and upgrade. During the service life of the equipment, with the progress of technology and the expansion of functions, it may be necessary to modify or upgrade the original structure. The replaceability of the pads makes this process simple and fast. Instead of replacing the entire base, only the corresponding pads need to be replaced. This not only saves time and costs but also reduces the impact on the environment, reflecting the design concept of environmental protection.

[0017] Preferably, positioning posts are provided at the bottom of the base, and positioning holes matching the positioning posts are dug on the PCB board.

[0018] The matching design of the positioning posts and positioning holes ensures the precise alignment between the base and the PCB board. This precise alignment reduces the adjustment time during the assembly process, improves production efficiency, and also guarantees the dimensional accuracy of the product, enabling the entire device to meet the expected performance standards after assembly. With the assistance of the positioning posts and positioning holes, the assembly workers can quickly place the base on the PCB board without complex alignment steps. This design greatly simplifies the assembly process, reduces the possibility of human errors, and improves the assembly speed and quality. The mating design of the positioning posts and positioning holes effectively restricts the movement freedom of the base on the PCB board, preventing offset and rotation during the assembly process, thereby improving the overall accuracy of the assembly. This high-precision assembly is one of the key factors for achieving high performance of the device. Due to the simplification and high efficiency of the assembly process, the enterprise can increase production without increasing the workforce or reduce the labor input at the same production volume, thus reducing production costs. In addition, reducing the rework and scrap rates also helps to reduce the overall production costs. After the positioning posts are inserted into the positioning holes, an additional fixing point is provided between the base and the PCB board, enhancing the structural stability between the two. This stability is particularly important for withstanding external shocks and vibrations and helps to extend the service life of the device. The standardized design of the positioning posts and positioning holes enables the production line to more easily achieve automation and assembly line operations, which is particularly beneficial for large-scale production and mass manufacturing and can significantly improve production efficiency and consistency. By ensuring the accurate alignment between the base and the PCB board, the design of the positioning posts and positioning holes helps to avoid electrical connection problems caused by improper assembly, thereby enhancing the overall reliability and stability of the product.

[0019] As another aspect of the present utility model, a welded optical axis includes a housing and an optical axis main body installed in the housing. The housing includes a base fixedly connected to the PCB board and an upper cover connected to the base. Fixed columns are provided at the bottom of the base, and through holes are dug on the PCB board. After the fixed columns pass through the through holes, they are fixed by spot welding.

[0020] The base is rigidly connected to the PCB board through fixing posts. The design of the fixing posts allows them to pass through the reserved through-holes on the PCB board and ensures a firm bond with the PCB board through the spot welding process. Through the direct connection between the fixing posts and the PCB board, assembly errors are reduced, and the structural stability of the entire device is improved. The precise position of the through-holes ensures the accurate installation of the fixing posts, which is beneficial to improving the precision control during the assembly process. The spot welding connection between the fixing posts and the PCB board provides good electrical contact, which helps to ensure the continuity and reliability of signal transmission. The direct welding method of the fixing posts simplifies the assembly steps, reduces the production cost, and improves the production efficiency at the same time. By directly and firmly fixing the shaft body to the PCB board, it is ensured that the light blocking column on the button can stably enter the sensing area between the photo pairs, which is crucial for maintaining stable switch triggering. This design reduces the performance fluctuations caused by assembly differences, ensures the consistency and repeatability of each unit, and is beneficial to the control of product quality. The rigid connection method of the fixing posts enhances the overall durability and reduces the risk of loosening caused by mechanical vibration or impact.

[0021] Preferably, mounting holes are dug at the bottom of the base, and the fixing posts are connected in the mounting holes.

[0022] The design of the mounting holes at the bottom of the base reflects a deep understanding of structural stability and installation convenience. This design not only ensures a firm connection between the base and the ground or other supporting surfaces but also, through careful hole layout, enables the fixing posts to be precisely embedded therein, thus providing a mounting method that is both firm and easy to adjust. Such a design reduces the complexity during the installation process, improves work efficiency, and also ensures the stability of the equipment during use, providing a solid guarantee for the long-term operation of the equipment.

[0023] Preferably, the fixing posts are cylindrical or square in shape.

[0024] The selection of the shape of the fixing posts, whether cylindrical or square, is based on a comprehensive consideration of functionality and aesthetics. The cylindrical fixing posts have good anti-stress concentration ability due to their smooth curved surfaces, which can effectively reduce the risk of damage caused by external forces. While the square posts, due to their distinct edges and corners, can provide better positioning and support effects in certain specific situations. This diverse selection meets the personalized needs in different application scenarios, demonstrating the flexibility and forward-looking nature of the design.

[0025] Preferably, the fixing posts are made of metal materials.

[0026] The fixing posts are made of metal materials, and this choice reflects the emphasis on durability and strength requirements. Metal materials, with their excellent mechanical properties and corrosion resistance, have become the first choice in many high-demand environments. They can withstand heavy loads without deformation and resist the erosion of harsh environments, ensuring the long-term reliable operation of the equipment. In addition, the wide availability and relatively easy processing of metal materials also reduce production costs and enhance the market competitiveness of the product.

[0027] Preferably, the fixing posts can be replaced by metal pads.

[0028] The design that the fixing posts can be replaced by metal pads is a well-considered choice for the convenience of maintenance and upgrade. During the usage cycle of the equipment, with the progress of technology and the expansion of functions, it may be necessary to modify or upgrade the original structure. The replaceability of the pads makes this process simple and fast. Instead of replacing the entire base, only the corresponding pads need to be replaced. This not only saves time and costs but also reduces the impact on the environment, reflecting the design concept of environmental protection.

[0029] Preferably, positioning posts are provided at the bottom of the base, and positioning holes matching the positioning posts are dug on the PCB board.

[0030] The matching design of the positioning posts and positioning holes ensures the precise alignment between the base and the PCB board. This precise alignment reduces the adjustment time during the assembly process, improves production efficiency, and also guarantees the dimensional accuracy of the product, enabling the entire device to meet the expected performance standards after assembly. With the assistance of the positioning posts and positioning holes, the assembly workers can quickly place the base on the PCB board without complex alignment steps. This design greatly simplifies the assembly process, reduces the possibility of human errors, and improves the assembly speed and quality. The cooperative design of the positioning posts and positioning holes effectively restricts the freedom of movement of the base on the PCB board, preventing offset and rotation during the assembly process, thereby improving the overall accuracy of the assembly. This high-precision assembly is one of the key factors for achieving high performance of the device. Due to the simplification and high efficiency of the assembly process, enterprises can increase production without increasing the workforce or reduce the labor input at the same production volume, thus reducing production costs. In addition, reducing rework and scrap rates also helps to reduce the overall production costs. After the positioning posts are inserted into the positioning holes, an additional fixing point is provided between the base and the PCB board, enhancing the structural stability between the two. This stability is particularly important for withstanding external shocks and vibrations and helps to extend the service life of the device. The standardized design of the positioning posts and positioning holes makes it easier for the production line to achieve automation and assembly line operations, which is particularly beneficial for large-scale production and mass manufacturing and can significantly improve production efficiency and consistency. By ensuring the accurate alignment between the base and the PCB board, the design of the positioning posts and positioning holes helps to avoid electrical connection problems caused by improper assembly, thereby enhancing the overall reliability and stability of the product.

[0031] The beneficial effects of the present utility model compared with the prior art are as follows:

[0032] The welding magnetic shaft of the present utility model has a base tightly connected to the PCB board through fixing columns. The through holes dug on the PCB board provide a precise penetration channel for the fixing columns, and then they are firmly fixed by spot welding technology, forming a stable and precise connection. By directly and firmly fixing the shaft body to the PCB board, the distance between the magnet and the Hall sensor is ensured to be constant, which is crucial for maintaining a stable magnetic induction intensity. This constant distance eliminates performance fluctuations caused by assembly errors and ensures consistent and accurate feedback for each key operation. Since the distance between the magnet and the Hall sensor can be ensured to be constant, the magnetic shaft can adopt a soft elastic structure, which means that the magnetic shaft keyboard can provide a more comfortable feel and a more pleasant sound when typing. Traditional keyboards often rely on a positioning plate to fix the shaft body, but this may cause deformation or inclination during the installation process, thereby affecting the accuracy of magnetic induction. The welding magnetic shaft abandons this design and adopts a non-positioning plate solution, fundamentally avoiding magnetic induction changes caused by positioning plate problems and greatly improving the input accuracy of the keyboard. Due to the strict control of the relative positions of the magnet and the Hall sensor, the input accuracy of the keyboard is significantly improved. Users can rely on each key press to receive accurate and timely responses during rapid typing or gaming operations. This is undoubtedly a great blessing for players and professionals who pursue an ultimate operating experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. 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, other related drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1 It is an exploded view of the welding magnetic shaft according to an embodiment of the present utility model.

[0035] Figure 2 It is an assembly schematic diagram of the welding magnetic shaft according to an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] 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 in conjunction with the 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 drawings here can be arranged and designed in various different configurations.

[0037] Accordingly, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, 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 in the present application without creative efforts fall within the scope of protection of the present application.

[0038] It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, 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 this 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, rather than indicating or implying 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.

[0039] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.

[0040] The technical solutions in the present application will be described below with reference to the accompanying drawings.

[0041] This embodiment provides a welding magnetic axis, which includes a housing 100 and a magnetic axis main body 200 installed in the housing 100. The housing 100 includes a base 110 fixedly connected to a PCB board 300 and an upper cover 120 connected to the base 110. Fixing columns 130 are provided at the bottom of the base 110, and through holes 310 are dug on the PCB board 300. After the fixing columns 130 pass through the through holes 310, they are fixed by spot welding. The magnetic axis main body 200 includes a button 210, a magnet 220, a spring 230, and a light guide column 240.

[0042] The base 110 is tightly connected to the PCB board 300 through the fixing posts 130. The through holes 310 dug on the PCB board 300 provide a precise penetration channel for the fixing posts 130, and then they are firmly fixed by spot welding technology, forming a stable and precise connection. By directly and firmly fixing the shaft body to the PCB board 300, the distance between the magnet and the Hall sensor is ensured to be constant, which is crucial for maintaining a stable magnetic induction intensity. This constant distance eliminates the performance fluctuations caused by assembly errors and ensures consistent and accurate feedback for each key operation. Since the distance between the magnet and the Hall sensor can be ensured to be constant, the magnetic shaft can adopt a soft elastic structure, which means that the magnetic shaft keyboard can provide a more comfortable feel and a more pleasant sound when being struck. Traditional keyboards often rely on a positioning plate to fix the shaft body, but this may cause deformation or inclination during the installation process, thus affecting the accuracy of magnetic induction. The welded magnetic shaft abandons this design and adopts a non-positioning plate solution, fundamentally avoiding the magnetic induction changes caused by positioning plate problems and greatly improving the input accuracy of the keyboard. Due to the strict control of the relative positions of the magnet and the Hall sensor, the input accuracy of the keyboard is significantly improved. When users are typing quickly or playing games, they can rely on each key press to receive accurate and timely responses, which is undoubtedly a great blessing for players and professionals who pursue an ultimate operation experience.

[0043] In this embodiment, mounting holes are dug at the bottom of the base 110, and the fixing posts 130 are connected in the mounting holes.

[0044] The design of the mounting holes at the bottom of the base 110 reflects a deep understanding of structural stability and installation convenience. This design not only ensures a stable connection between the base 110 and the ground or other supporting surfaces, but also through the careful layout of the hole positions, enables the fixing posts 130 to be precisely embedded therein, thus providing a firm and easy-to-adjust installation method. Such a design reduces the complexity during the installation process, improves work efficiency, and also ensures the stability of the device during use, providing a solid guarantee for the long-term operation of the device.

[0045] In this embodiment, the outer shape of the fixing post 130 is a cylinder or a square post.

[0046] The selection of the outer shape of the fixing post 130, whether it is a cylinder or a square post, is based on a comprehensive consideration of functionality and aesthetics. The cylindrical fixing post 130 has good anti-stress concentration ability due to its smooth curved surface, and can effectively reduce the risk of damage caused by external forces. While the square post, due to its distinct edges and corners, can provide better positioning and supporting effects in certain specific situations. This diverse selection meets the personalized needs in different application scenarios, demonstrating the flexibility and forward-looking nature of the design.

[0047] In this embodiment, the fixing post 130 is made of a metal material.

[0048] The fixing post 130 is made of a metal material, and this choice reflects the emphasis on durability and strength requirements. Metal materials, with their excellent mechanical properties and corrosion resistance, have become the first choice in many high-demand environments. They can withstand heavy loads without deformation and resist the erosion of harsh environments, ensuring the long-term reliable operation of the device. In addition, the wide availability and relatively easy processing characteristics of metal materials also reduce production costs and enhance the market competitiveness of the product.

[0049] In this embodiment, positioning posts 140 are provided at the bottom of the base 110, and positioning holes 320 that cooperate with the positioning posts 140 are drilled on the PCB board 300.

[0050] The matching design of the positioning posts and positioning holes ensures the precise alignment between the base and the PCB board. This precise alignment reduces the adjustment time during the assembly process, improves production efficiency, and also ensures the dimensional accuracy of the product, enabling the entire device to meet the expected performance standards after assembly. With the assistance of the positioning posts and positioning holes, the assembly worker can quickly place the base on the PCB board without complex alignment steps. This design greatly simplifies the assembly process, reduces the possibility of human error, and improves the assembly speed and quality. The cooperation design of the positioning posts and positioning holes effectively restricts the movement freedom of the base on the PCB board, preventing offset and rotation during the assembly process, thereby improving the overall accuracy of the assembly. This high-precision assembly is one of the key factors for achieving high performance of the device. Due to the simplification and high efficiency of the assembly process, enterprises can increase production without increasing the workforce or reduce the workforce input at the same production volume, thereby reducing production costs. In addition, reducing rework and scrap rates also helps to reduce the overall production cost. After the positioning posts are inserted into the positioning holes, an additional fixing point is provided between the base and the PCB board, enhancing the structural stability between the two. This stability is particularly important for withstanding external shocks and vibrations and helps to extend the service life of the device. The standardized design of the positioning posts and positioning holes enables the production line to more easily achieve automation and assembly line operations, which is particularly beneficial for large-scale production and mass manufacturing and can significantly improve production efficiency and consistency. By ensuring the accurate alignment between the base and the PCB board, the design of the positioning posts and positioning holes helps to avoid electrical connection problems caused by improper assembly, thereby enhancing the overall reliability and stability of the product.

[0051] In other embodiments, the fixing post 130 can be replaced by a metal pad.

[0052] The design that the fixed column 130 can be replaced with a metal pad is a well - considered choice for maintenance and upgrade convenience. During the usage cycle of the device, with the progress of technology and the expansion of functions, it may be necessary to modify or upgrade the original structure. The replaceability of the pad makes this process simple and fast. Instead of replacing the entire base 110, only the corresponding pad needs to be replaced. This not only saves time and cost but also reduces the impact on the environment, reflecting the design concept of environmental protection.

[0053] In other embodiments, the magnetic axis can be replaced with an optical axis.

[0054] Although the embodiments of the present utility model 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 utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A welded magnetic shaft, characterized in that: It includes a shell and a magnetic axis body installed on the shell. The shell includes a base fixedly connected to a PCB board and an upper cover connected to the base. A fixing column is arranged at the bottom of the base. A through hole is dug on the PCB board. The fixing column passes through the through hole and is fixed by spot welding.

2. The welding magnetic shaft according to claim 1, characterized in that: A positioning column is arranged at the bottom of the base, and a positioning hole cooperating with the positioning column is dug on the PCB board.

3. The welding magnetic shaft according to claim 1, characterized in that: A mounting hole is dug at the bottom of the base, and the fixing column is connected in the mounting hole.

4. The welding magnetic shaft according to claim 1, characterized in that: The fixing column has a cylindrical or square shape.

5. The welding magnetic shaft according to claim 1, characterized in that: The fixing column is made of metal material or can be replaced by a metal pad.

6. A welding optical axis, characterized in that: It includes a shell and an optical axis body installed on the shell. The shell includes a base fixedly connected to a PCB board and an upper cover connected to the base. A fixing column is arranged at the bottom of the base. A through hole is dug on the PCB board. The fixing column passes through the through hole and is fixed by spot welding.

7. The welding optical axis according to claim 6, characterized in that: A positioning column is arranged at the bottom of the base, and a positioning hole cooperating with the positioning column is dug on the PCB board.

8. The welding optical axis according to claim 6, characterized in that: A mounting hole is dug at the bottom of the base, and the fixing column is connected in the mounting hole.

9. The welding optical axis according to claim 6, characterized in that: The fixing column has a cylindrical or square shape.

10. The welding optical axis according to claim 6, characterized in that: The fixing column is made of metal material or can be replaced by a metal pad.