Key shaft body and keyboard

Abstract

The application belongs to the technical field of keyboards and provides a key shaft body, which separates a shaft center movement wear-resistant part and a high-temperature welding part, and the key shaft body comprises a shell, a high-temperature resistant support, a switch assembly and a shaft center. The shell has a containing cavity, a first opening and a wear-resistant guide part. The high-temperature resistant support is arranged in the containing cavity and covers the first opening. The switch assembly comprises two elastic sheets, one end of each elastic sheet is located in the containing cavity and the other end penetrates through the high-temperature resistant support and the first opening. The shaft center is elastically and vertically arranged in the containing cavity to trigger the two elastic sheets to separate or touch each other, and the shaft center is provided with a wear-resistant guide matching part for matching with the wear-resistant guide part to guide the shaft center to move up and down. The key shaft body provided by the application can avoid high-temperature damage to the shell when the elastic sheets are welded. Meanwhile, the key shaft body can also avoid dust generated by the friction between the shaft center and the shell, and ensure that the key has a long wear-resistant service life, a good hand feeling and stability during a long time use of the shaft center.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of keyboards, in particular to a key shaft body and a keyboard. BACKGROUND

[0002] The key shaft body of the conventional mechanical keyboard generally comprises a shell, a switch assembly with two springs, and a shaft, wherein one end of the spring is located inside the shell, and the other end of the spring penetrates the shell and is welded to the circuit board; the shaft is generally arranged on the shell and can move up and down relative to the shell, and the two springs are separated or contacted with each other with the up and down movement of the shaft, thereby generating corresponding electrical signals on the circuit board. At the same time, when the spring is welded to the circuit board, the temperature of the spring is relatively high, in order to prevent the deformation of the shell around the spring, the shell is generally integrally injection molded with high-temperature-resistant material.

[0003] However, it is found through use that the service life of the key shaft body of the conventional mechanical keyboard is low and the stability of the shaft is poor after long-term use. SUMMARY

[0004] The purpose of the embodiments of the present application is to provide a key shaft body and a keyboard to solve the technical problems of low service life of the key shaft body and poor stability of the shaft in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is to provide a key shaft body, which comprises a shell, a high-temperature-resistant support, a switch assembly, and a shaft; the shell has a containing cavity, a first opening communicating with the containing cavity, and a wear-resistant guide part arranged in the containing cavity; the high-temperature-resistant support is arranged in the containing cavity and covers the first opening; the switch assembly comprises two springs for electrical connection with an external circuit board, one end of each spring is located in the containing cavity and the other end penetrates the high-temperature-resistant support and passes out of the first opening; the shaft is elastically arranged in the containing cavity to trigger the two springs to separate or contact with each other, and the shaft is provided with a wear-resistant guide matching part for matching with the wear-resistant guide part to guide the up and down movement of the shaft.

[0006] In one of the embodiments, the high-temperature-resistant support comprises a bottom plate and a side wall part connected with the bottom plate, the bottom plate abuts against the inner wall of the shell and covers the first opening, and the bottom plate is provided with two through holes for the corresponding springs to pass through, and the side wall part surrounds the two springs.

[0007] In one of the embodiments, one side of the side wall part close to the shaft is provided with a second opening, one of the two springs is provided with a first protrusion extending towards the shaft, and the shaft is provided with a second protrusion for penetrating the second opening to press or release the first protrusion.

[0008] In one of the embodiments, the high-temperature-resistant support is provided with two insertion grooves for inserting the corresponding elastic sheet, and the insertion grooves are communicated with the corresponding perforations.

[0009] In one of the embodiments, the shell comprises a first shell and a second shell for enclosing the accommodating cavity, and one of the first shell and the second shell is a wear-resistant shell and is provided with the wear-resistant guide part.

[0010] In one of the embodiments, the first shell and the second shell are arranged in a top-down manner, and the top of the shaft is penetrated through the first shell; when the first shell is provided with the wear-resistant guide part, the bottom of the shaft is elastically and liftable arranged on the first shell; when the second shell is provided with the wear-resistant guide part, the bottom of the shaft is elastically and liftable arranged on the second shell.

[0011] In one of the embodiments, the bottom of the second shell is provided with the first opening, and the first shell and the second shell are detachably connected and press the high-temperature-resistant support at the first opening of the second shell.

[0012] In one of the embodiments, the wear-resistant guide part comprises two guide rails and a sleeve, the two guide rails are arranged on the opposite sides of the shell and extend in a vertical direction, the sleeve is arranged at the bottom of the shell and is axially parallel to the vertical direction, the wear-resistant guide matching part comprises two sliding blocks for sliding along the corresponding guide rails and a sleeve rod for being inserted into the sleeve, the two sliding blocks are arranged on the opposite sides of the shaft, and the sleeve rod is arranged at the bottom of the shaft.

[0013] In one of the embodiments, the key shaft body further satisfies at least one of the following conditions:

[0014] The high-temperature-resistant support is made of polybutylene terephthalate or nylon resin added with glass fibers;

[0015] The wear-resistant guide part is a wear-resistant polycarbonate guide part or a polyoxymethylene guide part; and

[0016] The wear-resistant guide matching part is a wear-resistant polycarbonate guide matching part or a polyoxymethylene guide matching part.

[0017] To achieve the above-mentioned purpose, the application further provides a keyboard, which comprises a base and a plurality of key shaft bodies arranged on the base.

[0018] The beneficial effects provided by this application are as follows: Compared with the prior art, the key switch provided by this application isolates the spring from the outer shell through a high-temperature resistant bracket, preventing the spring from directly contacting the outer shell. This avoids high-temperature damage to the outer shell caused by the welding of the spring, thus affecting the service life of the key switch. At the same time, by setting a wear-resistant guide part and a wear-resistant guide mating part to guide the vertical movement of the spindle, it avoids dust generation caused by friction between the spindle and the outer shell when the spindle moves up and down relative to the outer shell. This ensures that the key switch has a long wear-resistant service life, good spindle stability, and a good tactile feel. By adopting the above-mentioned design of separately molding the high-temperature resistant bracket used to support the switch assembly and the outer shell used to support the spindle, the high-temperature resistance requirements of the electrical components of the key switch can be met, as well as the wear resistance requirements of the mechanical moving parts of the key switch. This ensures that the key switch has a long service life and that the spindle has good stability during long-term use. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the key shaft provided in the embodiments of this application;

[0021] Figure 2 This is a top view of the key shaft provided in an embodiment of this application;

[0022] Figure 3 for Figure 2 The key shaft shown is a sectional view along line AA.

[0023] Figure 4 An exploded structural diagram of the key shaft provided in the embodiment of this application when the second housing has a wear-resistant guide portion;

[0024] Figure 5 for Figure 4 The diagram shows the structure of the second housing of the button shaft;

[0025] Figure 6 This is a schematic diagram of the structure of the high-temperature resistant bracket provided in the embodiments of this application;

[0026] Figure 7 An exploded structural diagram of the key shaft provided in the embodiment of this application when the first housing has a wear-resistant guide portion;

[0027] Figure 8 for Figure 7Structure schematic diagram of the first shell of the key shaft body shown;

[0028] Figure 9 For Figure 7 Structure schematic diagram of the second shell of the key shaft body shown.

[0029] In the drawings, various reference numerals refer to various identical or similar elements throughout the specification.

[0030] 100 - shell; 110 - accommodating cavity; 120 - first opening; 130 - wear-resistant guide part; 131 - guide rail; 132 - sleeve; 140 - first shell; 150 - second shell; 200 - high-temperature-resistant support; 210 - bottom plate; 211 - perforation; 220 - side wall part; 221 - second opening; 230 - insertion slot; 300 - switch assembly; 310 - elastic sheet; 311 - first protrusion; 400 - shaft center; 410 - wear-resistant guide matching part; 411 - sliding block; 412 - sleeve rod; 420 - second protrusion; 500 - elastic member. DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below with reference to the accompanying drawings. The embodiments described below are examples for explaining the present application and should not be understood as limiting the present application.

[0032] In the description of the present application, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0033] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features referred to. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0034] Please refer to Figures 1 to 3 The key shaft body and the keyboard provided by the embodiments of the present application are described. The key shaft body includes a shell 100, a high-temperature-resistant support 200, a switch assembly 300 and a shaft center 400. Please refer to Figure 4 and Figure 5The shell 100 has a containing cavity 110, a first opening 120 communicating with the containing cavity 110, and a wear-resistant guide part 130 arranged in the containing cavity 110; the high-temperature-resistant support 200 is arranged in the containing cavity 110 and covers the first opening 120; the switch assembly 300 includes two spring sheets 310 for electrically connecting with an external circuit board, one end of each spring sheet 310 is located in the containing cavity 110 and the other end penetrates through the high-temperature-resistant support 200 and out of the first opening 120; the shaft center 400 is elastically and vertically arranged in the containing cavity 110 to trigger the two spring sheets 310 to separate or touch each other, and the shaft center 400 is provided with a wear-resistant guide matching part 410 for matching with the wear-resistant guide part 130 to guide the vertical movement of the shaft center 400.

[0035] It should be noted that the shaft center 400 is elastically and vertically arranged on the shell 100, which can be understood as that the shaft center 400 has an initial position and a terminal position. For example, the shaft center 400 can be moved from the initial position to the terminal position along the top-to-bottom direction of the shell 100 under the action of an external force, and can be returned from the terminal position to the initial position along the bottom-to-top direction of the shell 100 under the action of an elastic restoring member after losing the action of the external force. Alternatively, in the embodiment, when the shaft center 400 is in the initial position, the two spring sheets 310 are separated from each other, and when the shaft center 400 moves to the terminal position, the two spring sheets 310 touch each other and make the circuit board generate a corresponding electrical signal.

[0036] Compared with the prior art, the key shaft body provided by the embodiment can isolate the spring sheets 310 from the shell 100 through the high-temperature-resistant support 200, so that the spring sheets 310 do not directly contact the shell 100, which can avoid the high-temperature damage to the shell 100 caused by the welding of the spring sheets 310 and affect the service life of the key shaft body; meanwhile, the vertical movement of the shaft center 400 can be guided through the wear-resistant guide part 130 and the wear-resistant guide matching part 410, which can avoid the friction between the shaft center 400 and the shell 100 to generate dust when the shaft center 400 moves vertically relative to the shell 100, thereby ensuring that the key shaft body has a long service life, the stability of the shaft center 400 is good, and the key shaft body has a good hand feeling; the high-temperature-resistant support 200 for supporting the switch assembly 300 and the shell 100 for supporting the shaft center 400 are designed to be separately formed, which can meet the demand of the electrical elements of the key shaft body for high temperature resistance and the demand of the mechanical moving parts of the key shaft body for wear resistance, thereby ensuring that the key shaft body has a long service life and the shaft center 400 has good stability during long-term use.

[0037] In addition, since the dust generated between the shaft center 400 and the shell 100 is small, the two spring sheets 310 are not easily affected by the dust when they touch each other, and the reliability of the switch assembly 300 is high; and the high-temperature-resistant support 200 and the shell 100 are separately formed, which can facilitate the separate replacement of the high-temperature-resistant support 200 and the shell 100 and reduce the maintenance cost of the key shaft body.

[0038] In addition, the key shaft body provided by the embodiment is simple in production process and has great cost advantage compared with the key shaft body directly made of wear-resistant and high-temperature-resistant material.

[0039] In another embodiment of the present application, referring to Figure 3 , Figure 5 and Figure 6 , the high-temperature-resistant support 200 comprises a bottom plate 210 and a side wall part 220 connected with the bottom plate 210, the bottom plate 210 is abutted against the inner wall of the shell 100 and covers the first opening 120, and the bottom plate 210 is provided with two through holes 211 for the corresponding elastic sheets 310 to pass through, and the side wall part 220 is arranged around the two elastic sheets 310.

[0040] It should be noted that the positions of the through holes 211 on the bottom plate 210 correspond to the position of the first opening 120, one end of the two elastic sheets 310 passing out of the first opening 120 is electrically connected with the circuit board, and one end of the two elastic sheets 310 located in the accommodating cavity 110 is separated or contacted with each other under the action of the shaft center 400, so that the corresponding electric signal is generated on the circuit board. The elastic sheet 310 is usually made of metal material such as copper and has a certain elasticity and is generally electrically connected with the circuit board by welding.

[0041] The key shaft body provided by the embodiment is not directly in contact with the shell 100, so that the heat cannot be directly conducted to the shell 100, and the side wall part 220 can isolate the elastic sheet 310 from the shell 100 around the elastic sheet 310, so that the heat radiation of the elastic sheet 310 to the surrounding shell 100 can be avoided, the heat transferred to the shell 100 during welding of the elastic sheet 310 is further reduced, and the deformation of the shell 100 is prevented.

[0042] In another embodiment of the present application, referring to Figure 4 and Figure 6 , the side wall part 220 is provided with a second opening 221 on the side close to the shaft center 400, one of the two elastic sheets 310 is provided with a first protrusion 311 extending towards the shaft center 400, and the shaft center 400 is provided with a second protrusion 420 for passing through the second opening 221 to press or release the first protrusion 311.

[0043] It should be noted that the second protrusion 420 releases the first protrusion 311 as the shaft center 400 descends, so that the two elastic sheets 310 can be in contact with each other, and the second protrusion 420 presses the first protrusion 311 as the shaft center 400 rises, so that the two elastic sheets 310 can be separated from each other. In addition, the key shaft body provided by the embodiment can be welded with the elastic sheet 310 first and then the shaft center 400 is installed on the shell 100, so that the heat emitted from the second opening 221 of the side wall part 220 can not affect the shaft center 400.

[0044] The key shaft body provided by the embodiment can drive the second protrusion 420 to press and release the first protrusion 311 by moving up and down of the shaft center 400, so that the switch state of the switch assembly 300 can be switched simply and conveniently.

[0045] In another embodiment of the present application, referring to Figure 6 , the high-temperature-resistant support 200 is provided with two insertion grooves 230 for inserting the corresponding elastic sheet 310, and the insertion grooves 230 are communicated with the corresponding perforations 211.

[0046] It should be noted that the insertion grooves 230 can have various forms, such as a plurality of limiting members are protruded on the bottom of the high-temperature-resistant support 200, the insertion grooves 230 are formed between adjacent limiting members, or the insertion grooves 230 are formed between the limiting members and the side wall part 220, which can be set as required and is not limited herein.

[0047] The key shaft body with the above structure is simple and convenient to assemble, in which the middle part of the elastic sheet 310 abuts against the bottom surface of the corresponding insertion groove 230 after the elastic sheet 310 is inserted into the corresponding insertion groove 230, and the bottom of the elastic sheet 310 is penetrated out of the corresponding perforation 211.

[0048] In another embodiment of the present application, referring to Figure 4 , Figure 7 and Figure 8 , the shell 100 includes a first shell 140 and a second shell 150 for enclosing to form the accommodating cavity 110, and one of the first shell 140 and the second shell 150 is a wear-resistant shell and is provided with a wear-resistant guide part 130.

[0049] The key shaft body provided by the embodiment is that when the first shell 140 is provided with the wear-resistant guide part 130, the wear-resistant guide part 130 and other parts of the first shell 140 are integrally formed by using wear-resistant material, and when the second shell 150 is provided with the wear-resistant guide part 130, the wear-resistant guide part 130 and other parts of the second shell 150 are integrally formed by using wear-resistant material, which can ensure that the part for guiding the movement of the shaft center 400 has good wear resistance, and at the same time, it is convenient for the production of parts of the key shaft body and improves the production efficiency.

[0050] Alternatively, the first shell 140 and the second shell 150 can be both provided as wear-resistant shells.

[0051] In another embodiment of the present application, referring to Figure 7 and Figure 8 , the first shell 140 and the second shell 150 are arranged in an up-down manner, the top of the shaft center 400 penetrates through the first shell 140, and when the first shell 140 is provided with the wear-resistant guide part 130, the bottom of the shaft center 400 is arranged on the first shell 140 in an elastically lifting manner.

[0052] It should be noted that in order to make the shaft core 400 more convenient to be installed to the first shell 140, the shaft core 400 can be provided as two components which can be detachably connected and can be sequentially installed to the first shell 140.

[0053] The key shaft body provided by the embodiment has the top of the shaft core 400 penetrating through the first shell 140, and the bottom of the shaft core 400 being elastically and liftable arranged on the first shell 140, so that the shaft core 400 only cooperates with the first shell 140 during the up and down movement, and the influence of the manufacturing error and the assembly error of the components on the operation stability of the shaft core 400 can be reduced, and the hand feeling of the key shaft body is improved.

[0054] Optionally, referring to Figure 9 When the first shell 140 is provided with the wear-resistant guide part 130, the second shell 150 and the high-temperature-resistant support 200 are integrally formed by using a high-temperature-resistant material, so that the number of components of the key shaft body can be reduced, the production is facilitated, and the production efficiency is improved.

[0055] In another embodiment of the application, referring to Figure 4 and Figure 5 The first shell 140 and the second shell 150 are arranged in an up and down manner, the top of the shaft core 400 penetrates through the first shell 140, and the bottom of the shaft core 400 is elastically and liftable arranged on the second shell 150 when the second shell 150 is provided with the wear-resistant guide part 130.

[0056] The key shaft body provided by the embodiment limits the up and down movement of the shaft core 400 by the cooperation of the first shell 140 and the second shell 150, so that the complexity of the components can be reduced, the mold for manufacturing the first shell 140 and the second shell 150 is simplified, the first shell 140 and the second shell 150 are easy to produce, and the production efficiency is improved.

[0057] In another embodiment of the application, referring to Figure 4 and Figure 5 The bottom of the second shell 150 is provided with the first opening 120, and the first shell 140 is detachably connected with the second shell 150 and tightly presses the high-temperature-resistant support 200 at the first opening 120 of the second shell 150.

[0058] It should be noted that the first shell 140 and the second shell 150 can be connected in various ways, such as buckle connection, threaded connection, etc., which can be set as required and is not limited herein.

[0059] The key shaft body provided by the embodiment can fix the high-temperature-resistant support 200 in the accommodating cavity 110 after the first shell 140 and the second shell 150 are connected, so that the assembly of the key shaft body is simple and convenient.

[0060] In another embodiment of the present application, please refer to Figure 4 、 Figure 7 and Figure 8 , the wear-resistant guide part 130 includes two guide rails 131 arranged on the opposite sides of the shell 100 and extending in the vertical direction, and a sleeve 132 arranged on the bottom of the shell 100 and axially parallel to the vertical direction, the wear-resistant guide matching part 410 includes two sliding blocks 411 for sliding along the corresponding guide rails 131 and a sleeve rod 412 for being inserted into the sleeve 132, the two sliding blocks 411 are arranged on the opposite sides of the shaft center 400, and the sleeve rod 412 is arranged on the bottom of the shaft center 400.

[0061] The key shaft body provided by the embodiment can smoothly move the shaft center 400 up and down, has good stability, and makes the operation of the key shaft body smooth and has a good hand feeling, through the cooperation of the guide rails 131 and the sliding blocks 411 and the cooperation of the sleeve 132 and the sleeve rod 412.

[0062] Optionally, the key shaft body further includes an elastic member 500 for resetting the shaft center 400, one end of the elastic member 500 is sleeved on the sleeve 132, the other end of the elastic member 500 is sleeved on the sleeve rod 412, and the elastic member 500 abuts between the shaft center 400 and the inner wall of the shell 100. The elastic member 500 can be a spring. The key shaft body adopting the above structure can elastically lift the shaft center 400 relative to the shell 100, and has a simple structure.

[0063] In another embodiment of the present application, the high-temperature-resistant support 200 is made of polybutylene terephthalate or nylon resin added with glass fibers. The key shaft body adopting the above structure has a high thermal deformation temperature of the high-temperature-resistant support 200, can avoid deformation of the spring sheet 310 welded to the circuit board, and ensures the service life of the key shaft body.

[0064] In another embodiment of the present application, the wear-resistant guide part 130 is a wear-resistant polycarbonate guide part or a polyoxymethylene guide part. The wear-resistant polycarbonate guide part is made of wear-resistant polycarbonate (PC), and the polyoxymethylene guide part is made of polyoxymethylene, and has better wear resistance.

[0065] In another embodiment of the present application, the wear-resistant guide matching part 410 is a wear-resistant polycarbonate guide matching part or a polyoxymethylene guide matching part. The wear-resistant polycarbonate guide matching part is made of wear-resistant polycarbonate, and the polyoxymethylene guide matching part is made of polyoxymethylene, and has better wear resistance.

[0066] Optionally, the wear-resistant guide matching part 410 and the wear-resistant guide part 130 are made of the same wear-resistant material, which can further reduce the amount of dust generated when the shaft center 400 and the shell 100 rub, keep the shaft center 400 in good stability for a long time, and prolong the service life of the key shaft body.

[0067] Optionally, the shaft core 400 is integrally formed of the same wear-resistant material as the wear-resistant guiding matching part 410, which facilitates the machining of the shaft core 400.

[0068] To achieve the above object, the embodiment further provides a keyboard, which comprises a base and a plurality of key shaft bodies provided on the base.

[0069] Since the keyboard provided by the embodiment comprises the key shaft body disclosed in the above embodiment, at least all the beneficial effects of the above embodiment are achieved, and thus will not be repeated here.

[0070] The above merely provides the preferred embodiments of the present application, but should not be used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A key shaft body characterized by: The key shaft body comprises a shell, a high-temperature-resistant support, a switch assembly and a shaft core; the shell has a containing cavity, a first opening communicating with the containing cavity and a wear-resistant guide part arranged in the containing cavity; the high-temperature-resistant support is arranged in the containing cavity and covers the first opening; the switch assembly comprises two spring sheets for electrically connecting with an external circuit board, one end of each spring sheet is located in the containing cavity and the other end penetrates through the high-temperature-resistant support and the first opening; the shaft core is elastically arranged in the containing cavity to trigger the two spring sheets to be separated or contacted, the shaft core is provided with a wear-resistant guide matching part for matching with the wear-resistant guide part to guide the shaft core to move up and down, when the shaft core is in an initial position, the two spring sheets are separated, when the shaft core moves to a terminal position, the two spring sheets are contacted; The high-temperature-resistant support comprises a bottom plate and a side wall part connected with the bottom plate, the bottom plate abuts against the inner wall of the shell and covers the first opening, and the bottom plate is provided with two through holes for the corresponding spring sheets to pass through, and the side wall part surrounds the two spring sheets, and the side wall part separates the spring sheets from the shell around the spring sheets; One of the two spring sheets is provided with a first protrusion extending towards the shaft core, and the shaft core is provided with a second protrusion for penetrating through the second opening to press or release the first protrusion.

2. The key shaft body according to claim 1, characterized by: The high-temperature-resistant support is provided with two plug-in grooves for the corresponding spring sheets to be inserted, and the plug-in grooves communicate with the corresponding through holes.

3. The key shaft body according to claim 1, characterized by: The shell comprises a first shell and a second shell for enclosing the containing cavity, at least one of the first shell and the second shell is a wear-resistant shell and is provided with the wear-resistant guide part.

4. The key shaft body according to claim 3, characterized by: The first shell and the second shell are arranged in a top-down manner, and the top of the shaft core penetrates through the first shell; when the first shell is provided with the wear-resistant guide part, the bottom of the shaft core is elastically arranged on the first shell; when the second shell is provided with the wear-resistant guide part, the bottom of the shaft core is elastically arranged on the second shell.

5. The key shaft body according to claim 4, characterized by: The bottom of the second shell is provided with the first opening, and the first shell and the second shell are detachably connected and press the high-temperature-resistant support at the first opening of the second shell.

6. The key shaft body of claim 1, wherein: The wear-resistant guide part comprises two guide rails and a sleeve, the two guide rails are arranged on opposite sides of the shell and extend in a vertical direction, the sleeve is arranged at the bottom of the shell and axially parallel to the vertical direction, the wear-resistant guide matching part comprises two sliding blocks for sliding along the corresponding guide rails and a sleeve rod for being plugged into the sleeve, the two sliding blocks are arranged on opposite sides of the shaft core, and the sleeve rod is arranged at the bottom of the shaft core.

7. The key shaft body according to any one of claims 1 to 6, characterized by The key shaft body further satisfies at least one of the following: The high-temperature-resistant support is made of polybutylene terephthalate or nylon resin added with glass fibers; The wear-resistant guide part is a wear-resistant polycarbonate guide part or a polyoxymethylene guide part; and The wear-resistant guide fitting part is a wear-resistant polycarbonate guide fitting part or a polyoxymethylene guide fitting part.

8. A keyboard, characterized by: The keyboard comprises a base and a plurality of key shaft bodies as claimed in any one of claims 1-7 arranged on the base.

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