PCB electronic board satellite shaft, key and keyboard
By setting mounting parts and protrusions on the bearing seat, combined with the design of fasteners, the problems of high production cost and low efficiency of satellite shafts are solved, and a convenient installation and maintenance process is achieved.
Patent Information
- Application Number
- CN202423197399.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-24
AI Technical Summary
In the existing technology, during the manufacturing process of satellite shafts, metal positioning parts need to be combined with shaft seats through injection molds, resulting in high production costs and low efficiency.
Using a PCB electronic board satellite axis, a mounting part is set on one side of the axis seat. The first and second protrusions of the mounting part protrude from the upper and lower surfaces respectively, and fasteners are set in the groove to achieve the positioning of the axis seat and avoid the fasteners from being combined with the axis seat through the injection mold.
It reduces production costs, improves production efficiency, and makes the installation and disassembly of the bearing more convenient, thus reducing maintenance costs and difficulties.
Smart Images
Figure CN223651306U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of computers, specifically relating to PCB electronic board satellite axes, buttons and keyboards. Background Technology
[0002] Currently, for keys with longer keycaps, such as the "Shift" key and the "Space" key, it is usually necessary to install stabilizer bars on both sides of the mechanical spindle. The stabilizer bars are connected to the stabilizer bars to support both ends of the keycap, so as to ensure that the keycap can maintain balance when it is pressed and released.
[0003] In the prior art, the satellite axis includes a bearing seat, through which a metal positioning component passes. The lower end of the metal positioning component is inserted into a circuit board. However, the metal positioning component needs to be placed in a mold for injection molding in order to set the metal positioning component on the bearing seat, which results in high cost and low production efficiency. Utility Model Content
[0004] The purpose of this utility model is to address the shortcomings of existing technologies by providing PCB electronic board satellite axes, buttons, and keyboards. This solves the technical problem that in the manufacturing process of satellite axes, the metal positioning parts need to be combined with the axis seat through an injection mold, which leads to high production costs and low production efficiency.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] In a first aspect, this utility model provides a PCB electronic board satellite axis, including a bearing seat and a shaft body. The shaft body is slidably disposed on the bearing seat. A mounting portion is provided on one side of the bearing seat. The mounting portion has a first protrusion and a second protrusion disposed opposite to each other. The first protrusion protrudes from the upper surface of the mounting portion, and the second protrusion protrudes from the lower surface of the mounting portion. A groove is provided on the first protrusion, and a first fastener is disposed in the groove. A first through hole is provided on the mounting portion. One end of the first through hole communicates with the groove, and the other end of the first through hole passes through the second protrusion.
[0007] In some embodiments, the depth G of the groove and the height L of the first protrusion satisfy the relationship: G≥L.
[0008] In some embodiments, the width B of the second protrusion and the width D of the first protrusion satisfy the relationship: B≤D.
[0009] In some embodiments, the first fastener has a second through hole, the second through hole being located corresponding to the first through hole.
[0010] In some embodiments, the shape of the first fastener corresponds to the shape of the groove, and along the height direction of the shaft seat, the orthographic projection shape of the first fastener and the orthographic projection shape of the groove are both circular, elliptical, triangular, square, trapezoidal, hexagonal, octagonal or irregular.
[0011] In some embodiments, a limiting portion is provided on the other side of the bearing seat, the limiting portion having a limiting groove, and the bottom of the limiting portion having an insertion portion.
[0012] In some embodiments, the bearing seat has a receiving cavity extending through the bearing seat along its height direction, the lower end of the shaft body is slidably disposed within the receiving cavity, and the upper end of the shaft body extends out of the receiving cavity and protrudes from the upper surface of the bearing seat.
[0013] In some embodiments, along the height direction of the shaft seat, the accommodating cavity has a first cavity portion and a second cavity portion that communicate with each other. The first cavity portion is located above the second cavity portion, and the width K of the first cavity portion is smaller than the width H of the second cavity portion. The lower end of the shaft has a limiting block, which is slidably disposed in the second cavity portion.
[0014] Secondly, this utility model provides a button, including a circuit board, a positioning plate, a mechanical spindle, a keycap, a second fastener, and a satellite axis assembly. The positioning plate is spaced above the circuit board. The mechanical spindle is mounted on the positioning plate and electrically connected to the circuit board. The keycap is movably mounted on the positioning plate via the mechanical spindle. The satellite axis assembly includes a balance bar and two PCB electronic board satellite axes as described in the above embodiment. The two PCB electronic board satellite axes are connected by the balance bar and are respectively located on opposite sides of the mechanical spindle. The second protrusions of the two PCB electronic board satellite axes are inserted into the positioning plate or the circuit board. The second fastener passes through the first through hole and is connected to the first fastener. The upper end of the axis is connected to the keycap.
[0015] Thirdly, this utility model provides a keyboard, including the keys described in the above embodiments.
[0016] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:
[0017] This utility model's PCB electronic board satellite axis features a mounting portion on one side of the axis seat. A first protrusion of the mounting portion extends from its upper surface, and a second protrusion extends from its lower surface. The second protrusion is inserted into a positioning plate or circuit board to position the axis seat. A first fastener is placed within the groove of the first protrusion, effectively pressing the axis seat firmly against the corresponding position on the positioning plate or circuit board, preventing loosening or displacement during use. This structural design effectively separates the first fastener from the second protrusion, eliminating the need for the first fastener to be molded with the axis seat, thus reducing production costs and increasing efficiency. Furthermore, the separation of the first fastener and the second protrusion makes installation and removal of the axis seat more convenient. When replacing or repairing the axis seat, simply loosening the first fastener allows for easy removal without damaging the injection mold or the entire button structure, reducing maintenance costs and difficulty.
[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is one of the structural schematic diagrams of the satellite axis assembly of this utility model.
[0021] Figure 2 This is the second structural schematic diagram of the satellite axis assembly of this utility model.
[0022] Figure 3 This is a schematic diagram of the structure of the satellite axis of this utility model.
[0023] Figure 4 This is an exploded view of the satellite axis of the PCB electronic board of this utility model.
[0024] Figure 5 This is a cross-sectional view of the satellite axis assembly of this utility model.
[0025] Figure 6 This is a cross-sectional view of the satellite axis of the PCB electronic board of this utility model.
[0026] Figure 7 This is a cross-sectional view of the bearing seat of this utility model.
[0027] Figure 8 This is a schematic diagram of the assembly of the satellite axis assembly and the circuit board of this utility model.
[0028] The reference numerals in the attached figures are explained as follows:
[0029] 100. Satellite axis assembly;
[0030] 10. PCB electronic board satellite axis; 11. Shaft seat; 111. Mounting part; 112. First protrusion; 1121. Groove; 113. Second protrusion; 114. First fastener; 1141. Second through hole; 115. First through hole; 116. Limiting part; 1162. Limiting groove; 1163. Finger stop part; 1164. Insertion part; 117. Accommodating cavity; 1171. First cavity part; 1172. Second cavity part; 118. Insertion interface; 12. Shaft body; 121. Limiting block; 122. Insertion groove;
[0031] 20. Balance bar;
[0032] 200. Circuit board;
[0033] 300. Second fastener;
[0034] a. Along the height direction of the bearing seat. Detailed Implementation
[0035] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.
[0036] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be interpreted as indicating or implying relative importance.
[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0038] The following will be combined with the appendix Figures 1-8 The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.
[0039] The keyboard of this utility model embodiment includes keys.
[0040] Please see Figures 1-8 The key in this embodiment of the utility model includes a circuit board 200, a positioning plate, a mechanical spindle, keycaps, and a stabilizer assembly 100. The positioning plate is spaced above the circuit board 200. The mechanical spindle is mounted on the positioning plate and electrically connected to the circuit board 200. The keycaps are movably mounted on the positioning plate via the mechanical spindle. The stabilizer assembly 100 includes a stabilizer bar 20 and two PCB electronic board stabilizers 10. The two PCB electronic board stabilizers 10 are connected by the stabilizer bar 20 and are respectively located on opposite sides of the mechanical spindle. Both PCB electronic board stabilizers 10 are detachably connected to the positioning plate or the circuit board 200, and the upper ends of both PCB electronic board stabilizers 10 are connected to the keycaps.
[0041] Understandably, the satellite axis assembly 100 is used to support the keycaps of the keyboard to improve the balance of keycap installation. It is especially suitable for supporting long keycaps, such as the "Shift" key, "Space" key, and "Enter" keycaps, so that they can maintain the balance on both sides when connected to their respective mechanical spindles. This allows the keycaps to be pressed down smoothly from any position when they are pressed, and to rebound smoothly after being pressed.
[0042] Please see Figures 1-8The PCB electronic board satellite axis 10 of this utility model embodiment includes a bearing seat 11 and a shaft body 12, with the shaft body 12 slidably mounted on the bearing seat 11. The end of a balance bar 20 is inserted from one end of the bearing seat 11 into the corresponding shaft body 12. Specifically, the balance bar 20 is a U-shaped bar, with both ends inserted into the shaft bodies 12 of the two PCB electronic board satellite axis 10s. When the shaft body 12 moves, it drives the balance bar 20 to move. For example, when the shaft body 12 extends upward, it causes the corresponding end of the balance bar 20 to tilt upward; when the shaft body 12 retracts downward, it causes the corresponding end of the balance bar 20 to press down. The other end of the balance bar 20 will then perform the same action. When the shaft body 12 of one PCB electronic board satellite axis 10 moves, it will drive the shaft body 12 of the other PCB electronic board satellite axis 10 to perform a corresponding action through the linkage of the balance bar 20, thereby ensuring that the button can maintain a balanced state when pressed and improving the stability of button operation.
[0043] Please see Figures 1-8 In some embodiments, a mounting portion 111 is provided on one side of the bearing seat 11. The mounting portion 111 has a first protrusion 112 and a second protrusion 113 disposed opposite to each other. The first protrusion 112 protrudes from the upper surface of the mounting portion 111, and the second protrusion 113 protrudes from the lower surface of the mounting portion 111. A groove 1121 is provided on the first protrusion 112, and a first fastener 114 is provided in the groove 1121. A first through hole 115 is provided on the mounting portion 111. One end of the first through hole 115 communicates with the groove, and the other end of the first through hole 115 passes through the second protrusion 113.
[0044] Compared with the prior art, the PCB electronic board satellite axis 10 of this utility model embodiment has a mounting part 111 on one side of the axis seat 11. The first protrusion 112 of the mounting part 111 protrudes from the upper surface of the mounting part 111, and the second protrusion 113 protrudes from the lower surface of the mounting part 111. The second protrusion 113 is used to insert into the positioning plate or circuit board 200 to achieve positioning of the axis seat 11. By setting the first fastener 114 in the groove 1121 of the first protrusion 112, the axis seat 11 is effectively pressed further into the corresponding position of the positioning plate or circuit board 200, preventing the axis seat 11 from loosening or displacing during use. Through the above structural arrangement, the first fastener 114 and the second protrusion 113 are effectively separated, so that the first fastener 114 does not need to be combined with the axis seat 11 through an injection mold, effectively reducing production costs and improving production efficiency. Meanwhile, the separate arrangement of the first fastener 114 and the second protrusion 113 makes the installation and removal of the bearing seat 11 more convenient. When the bearing seat 11 needs to be replaced or repaired, it can be easily removed by simply loosening the first fastener 114, without damaging the injection mold or the entire button structure, thereby reducing maintenance costs and difficulty.
[0045] Specifically, when the PCB electronic board satellite axis 10 is installed onto the circuit board 200 or the positioning plate, the circuit board 200 or the positioning plate has a positioning hole, the second protrusion 113 is inserted into the positioning hole, and the second fastener 300 passes through the first through hole 115 and is connected to the first fastener 114.
[0046] Please see Figure 5 In some embodiments, the first fastener 114 has a second through hole 1141, which corresponds to the position of the first through hole 115. By aligning the second through hole 1141 of the first fastener 114 with the first through hole 115, a precise assembly reference is effectively provided for the first fastener 114 and other connecting components. This simplifies the assembly process, reduces the possibility of assembly errors, and improves assembly efficiency.
[0047] It is understandable that the second fastener 300 passes through the first through hole 115 and connects to the second through hole 1141 of the first fastener 114. Specifically, when the first fastener 114 and the second fastener 300 are threaded together, the first fastener 114 is a nut, the second through hole 1141 is a threaded hole, and the second fastener 300 is a screw. When the first fastener 114 and the second fastener 300 are riveted together, the first fastener 114 is the part being riveted, the second through hole 1141 is a riveting hole, and the second fastener 300 is a rivet. When the first fastener 114 and the second fastener 300 are snapped together, the first fastener 114 is a snap-fit, the second through hole 1141 is a snap-fit interface, and the second fastener 300 is a snap-fit component that matches the snap-fit interface.
[0048] Please see Figures 2-5 as well as Figures 7-8 In some embodiments, a limiting part 116 is provided on the other side of the bearing seat 11, and the limiting part 116 has a limiting groove 1162. By providing the limiting groove 1162, the limiting groove 1162 is used to accommodate part of the balance bar 20. While ensuring that the balance bar 20 can swing up and down with the extension and retraction of the shaft body 12, it also provides support for the balance bar 20, effectively preventing the balance bar 20 from falling off due to vibration or external force during use.
[0049] Furthermore, both ends of the limiting groove 1162 form finger-stopping portions 1163 towards the inside of the limiting groove 1162. Specifically, the limiting groove 1162 is an arc-shaped groove, and the finger-stopping portions 1163 have a raised arc-shaped structure towards the limiting groove 1162. The two ends of the balance bar 20 are respectively limited within the limiting grooves 1162 of the shaft bodies 12 of the two PCB electronic board satellite axes 10. While ensuring that the balance bar 20 can swing up and down with the extension and retraction of the shaft bodies 12, the balance bar 20 has a stable and reliable assembly effect on the two button shaft bodies 12, thereby ensuring the use effect of the satellite axis assembly 100.
[0050] Please see Figures 2-5 as well as Figures 7-8 In some embodiments, the bottom of the limiting part 116 has a plug-in part 1164, which is used to be plugged into the positioning plate or circuit board 200 to realize the positioning setting of the shaft seat 11, thereby improving the installation stability of the PCB electronic board satellite axis 10.
[0051] Please see Figure 6 In some embodiments, the depth G of the groove 1121 and the height L of the first protrusion 112 satisfy the relationship: G ≥ L. By setting the depth G of the groove 1121 to be greater than or equal to the height L of the first protrusion 112, it is effectively ensured that the depth G of the groove 1121 is sufficient to accommodate the first fastener 114, allowing the first fastener 114 to be more deeply embedded and fixed during installation, thereby enhancing the stability of the entire structure. This helps prevent the bearing 11 from loosening or displacing due to vibration or external forces during use.
[0052] Please see Figure 6 In some embodiments, the width B of the second protrusion 113 and the width D of the first protrusion 112 satisfy the relationship: B ≤ D. By setting the width D of the first protrusion 112 and the width B of the second protrusion 113, since the second protrusion 113 is used to be inserted into the positioning plate or circuit board 200, making the width B of the second protrusion 113 less than or equal to the width D of the first protrusion 112 effectively reduces the space occupied by the second protrusion 113, thereby optimizing space utilization.
[0053] Please see Figure 1 as well as Figures 3-4 In some embodiments, the shape of the first fastener 114 corresponds to the shape of the groove 1121, and along the height direction a of the bearing 11, the orthographic projection shape of both the first fastener 114 and the groove 1121 is circular, elliptical, triangular, square, trapezoidal, hexagonal, octagonal, or irregular. By matching the shape of the first fastener 114 with the shape of the groove 1121, it is ensured that the first fastener 114 can be accurately positioned within the groove 1121 during installation. This precise assembly not only improves installation efficiency but also reduces the risk of performance degradation or failure due to assembly errors. Furthermore, the fact that the orthographic projection shapes of both the first fastener 114 and the groove 1121 are circular, elliptical, triangular, square, trapezoidal, hexagonal, octagonal, or irregular effectively increases the diversity of the shapes of the first fastener 114 and the groove 1121, allowing for the selection of appropriate shapes according to actual needs to meet space constraints and performance requirements.
[0054] Specifically, when the orthographic projection shape of the first fastener 114 and the orthographic projection shape of the groove 1121 are both elliptical, triangular, square, trapezoidal, hexagonal, octagonal or irregular, installing the first fastener 114 in the groove 1121 can effectively prevent the first fastener 114 from rotating, thereby improving the stability of locking.
[0055] It is understood that the aforementioned irregular shape refers to a non-standard, irregular, or unconventional shape. Compared with the aforementioned shapes that have clear geometric features (such as square, circle, ellipse, trapezoid, hexagon, or octagon), when the orthographic projection shape is irregular, it does not possess these standard shape features.
[0056] Please see Figure 5 as well as Figures 7-8 In some embodiments, the bearing seat 11 has a receiving cavity 117 that extends through the bearing seat 11 along the height direction a. The lower end of the shaft body 12 is slidably disposed within the receiving cavity 117, and the upper end of the shaft body 12 extends out of the receiving cavity 117 and protrudes from the upper surface of the bearing seat 11. By providing the receiving cavity 117, which extends through the bearing seat 11 along the height direction a, when assembling the bearing seat 11 and the shaft body 12, the shaft body 12 is inserted into the receiving cavity 117 from the bottom of the bearing seat 11, and the lower end of the shaft body 12 is slidably connected to the receiving cavity 117 of the bearing seat 11. The upper end of the shaft body 12 extends out from the top of the bearing seat 11 to connect with a keycap, effectively simplifying the assembly process of the bearing seat 11 and the shaft body 12 and improving assembly efficiency.
[0057] Specifically, the other side wall of the switch seat 11 has an insertion interface 118 that passes through the receiving cavity 117. The switch body 12 is provided with a insertion slot 122 for inserting the end of the balance bar 20. The end of the balance bar 20 passes through the insertion interface 118 and is inserted into the insertion slot 122, so that the end of the balance bar 20 is connected to the switch body 12. In this way, when the switch body 12 is moved up and down relative to the switch seat 11 by the keycap, the end of the balance bar 20 inserted into the insertion slot 122 on the switch body 12 also moves with the switch body 12. When the switch body 12 moves, it drives the balance bar 20 to move, thereby realizing the linkage of the two switches 12 and achieving the purpose of supporting the keycap and keeping the keycap balanced during the pressing process.
[0058] Please see Figure 5 as well as Figures 7-8 In some embodiments, along the height direction a of the bearing 11, the accommodating cavity 117 has a first cavity portion 1171 and a second cavity portion 1172 that communicate with each other. The first cavity portion 1171 is located above the second cavity portion 1172, and the width K of the first cavity portion 1171 is smaller than the width H of the second cavity portion 1172. The lower end of the shaft 12 has a limiting block 121, which is slidably disposed in the second cavity portion 1172. Through the cooperative use of the first cavity portion 1171 and the second cavity portion 1172, the width K of the first cavity is smaller than the width H of the second cavity, and the limiting block 121 of the shaft 12 is slidably disposed in the second cavity portion 1172, effectively limiting the sliding range of the shaft 12 and preventing the shaft 12 from accidentally falling off or moving beyond the design range, thereby improving the overall safety and reliability.
[0059] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.
Claims
1. A satellite axis for a PCB electronic board, characterized in that: The device includes a bearing seat (11) and a shaft body (12). The shaft body (12) is slidably disposed on the bearing seat (11). A mounting portion (111) is provided on one side of the bearing seat (11). The mounting portion (111) has a first protrusion (112) and a second protrusion (113) disposed opposite to each other. The first protrusion (112) protrudes from the upper surface of the mounting portion (111), and the second protrusion (113) protrudes from the lower surface of the mounting portion (111). A groove (1121) is provided on the first protrusion (1121), and a first fastener (114) is provided in the groove (1121). A first through hole (115) is provided on the mounting portion (111). One end of the first through hole (115) communicates with the groove (1121), and the other end of the first through hole (115) passes through the second protrusion (113).
2. The PCB electronic board satellite axis as described in claim 1, characterized in that: The depth G of the groove (1121) and the height L of the first protrusion (112) satisfy the relationship: G≥L.
3. The PCB electronic board satellite axis as described in claim 1, characterized in that: The width B of the second protrusion (113) and the width D of the first protrusion (112) satisfy the relationship: B≤D.
4. The PCB electronic board satellite axis as described in claim 1, characterized in that: The first fastener (114) has a second through hole (1141), which corresponds to the position of the first through hole (115).
5. The PCB electronic board satellite axis as described in claim 1, characterized in that: The shape of the first fastener (114) corresponds to the shape of the groove (1121), and along the height direction (a) of the shaft seat (11), the orthographic projection shape of the first fastener (114) and the orthographic projection shape of the groove (1121) are both circular, elliptical, triangular, square, trapezoidal, hexagonal, octagonal or irregular.
6. The PCB electronic board satellite axis as described in claim 1, characterized in that: A limiting part (116) is provided on the other side of the bearing seat (11), the limiting part (116) has a limiting groove (1162), and the bottom of the limiting part (116) has a plug-in part (1164).
7. The PCB electronic board satellite axis as described in claim 1, characterized in that: The bearing seat (11) has a receiving cavity (117) that extends through the bearing seat (11) along the height direction (a). The lower end of the shaft body (12) is slidably disposed in the receiving cavity (117), and the upper end of the shaft body (12) extends out of the receiving cavity (117) and protrudes from the upper surface of the bearing seat (11).
8. The PCB electronic board satellite axis as described in claim 7, characterized in that: Along the height direction (a) of the bearing (11), the accommodating cavity (117) has a first cavity portion (1171) and a second cavity portion (1172) that communicate with each other. The first cavity portion (1171) is located above the second cavity portion (1172), and the width K of the first cavity portion (1171) is smaller than the width H of the second cavity portion (1172). The lower end of the shaft (12) has a limiting block (121), which is slidably disposed in the second cavity portion (1172).
9. A button, characterized in that: The device includes a circuit board (200), a positioning plate, a mechanical spindle, keycaps, a second fastener (300), and a satellite axis assembly (100). The positioning plate is spaced above the circuit board (200). The mechanical spindle is mounted on the positioning plate and electrically connected to the circuit board (200). The keycaps are movably mounted on the positioning plate via the mechanical spindle. The satellite axis assembly (100) includes a balance bar (20) and a PCB electronic board satellite axis as described in any one of claims 1 to 8. 10) There are two PCB electronic board satellite axes (10) connected by a balance bar (20). The two PCB electronic board satellite axes (10) are respectively set on opposite sides of the mechanical spindle. The second protrusion (113) of the two PCB electronic board satellite axes (10) is inserted into the positioning plate or the circuit board (200). The second fastener (300) passes through the first through hole (115) and is connected to the first fastener (114). The upper end of the shaft body (12) is connected to the keycap.
10. A keyboard, characterized in that: Includes the button as described in claim 9.