Combined keyboard key bracket
By adopting a combination structure of a special-shaped shaft and a large cut round hole in the keyboard key bracket, combined with the design of guide blocks, inclined plates, slide grooves and positioning grooves, the problem of excessive fitting gap between the inner and outer frame shafts in the prior art is solved, and a more stable and durable keyboard keys are achieved.
Patent Information
- Application Number
- CN202421489876.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-27
AI Technical Summary
In the design of existing keyboard keys, the fitting gap at the rotating shaft of the inner frame and outer frame is too large, causing the keys to shake, generate noise during use, and shorten their service life.
A combined keyboard key bracket is designed, adopting a combined structure of a special-shaped rotating shaft and a large-cut round hole. Through the design of guide blocks and inclined plates, the tolerance gap between the large-cut cylinder and the large-cut round hole is reduced, and the sliding grooves are used to ensure the stable installation of the inner frame and the outer frame.
It effectively reduces the shaking of the key cap when pressed, improves the feel and stability of the key, extends the service life of the key bracket, and reduces the generation of noise.
Smart Images
Figure CN222734856U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of keys, in particular to a combined keyboard key bracket. Background Art
[0002] In the field of electronic equipment manufacturing, especially in the design of keyboards and key brackets, there are extremely high requirements for the matching accuracy between keys and brackets. The matching between the keycap and the shaft system is not precise enough, which may cause the keys to shake or make noise during use, affecting the user experience. In addition, the assembly process may be complicated and require precise control of the installation of multiple components, which reduces production efficiency and increases manufacturing difficulty. At present, the keyboard keys include a bracket, a base plate and a keycap. The base plate of the key is connected to the keycap through an outer frame and an inner frame. The outer frame and the inner frame are usually hinged only in the middle position. In the traditional key bracket design, in order to facilitate installation, the matching gap between the cylinder and the round hole is large, causing the key to shake during operation, affecting the user's operating experience. Due to the large matching gap, long-term use will cause the wear between the key and the bracket to increase, thereby shortening the service life of the key bracket. In addition, the large matching gap will also cause the key to make noise during operation, affecting the user's use environment. Utility Model Content
[0003] The utility model provides a combined keyboard key support, which solves the problem of excessively large matching clearance between the inner frame and the outer frame rotating shaft in the prior art.
[0004] The technical solution of the utility model is achieved in this way:
[0005] A combined keyboard key bracket comprises an outer frame and an inner frame, wherein special-shaped rotating shafts are arranged on both sides of the inner frame, and large circular holes are arranged on both sides of the outer frame, and a circular hole plane is arranged on the large circular hole, and the special-shaped rotating shaft rotates in the large circular hole, and the large circular hole is connected with an L-shaped slide groove, and the end of the slide groove away from the large circular hole is connected with the top surface of the outer frame, the special-shaped rotating shaft comprises a large cut cylinder, and the large cut cylinder comprises a cylindrical plane, and an arc-shaped guide block is arranged on the cylindrical plane, and a gap is arranged between the cylindrical plane and the circular hole plane, and when the outer frame and the inner frame are both in a horizontal state, the cylindrical plane is parallel to the circular hole plane, and the guide block is tangent to the circular hole plane, and the width of the slide groove is smaller than the diameter of the large cut circular hole, and the axis of the guide block coincides with the center line of the cylindrical plane.
[0006] Furthermore, the end of the slide connected to the top surface of the outer frame is an inclined section, the end of the slide connected to the large circular hole is a horizontal section, the width of the horizontal section is less than the minimum diameter of the large circular hole, the circular hole plane is close to the top surface of the outer frame, and the center line of the horizontal section is far away from the circular hole plane. By applying horizontal thrust, the special-shaped shaft can easily slide into the horizontal section and snap into the large circular hole, which improves the convenience of installation. The large circular hole is supported by the large circular column, and the width of the intersection of the large circular hole and the horizontal section is increased, which reduces the resistance to pushing out and avoids the possibility of the special-shaped shaft being broken or damaged when subjected to large thrust and resistance.
[0007] Furthermore, an inclined plate is provided between the guide block and one end of the large cut circular column, and the inclined plate is provided at the end away from the hinged end of the inner frame and the key cap, and the open end of the slide groove is close to the hinged end of the outer frame and the bottom plate. The open end of the slide groove is close to the hinged end of the outer frame and the bottom plate, which can effectively prevent the special-shaped shaft from accidentally falling off the slide groove. Even when the inner frame is subjected to a certain external force, due to the limitation of the open end, the special-shaped shaft can be kept in the large cut circular hole, thereby ensuring the stability and reliability of the key bracket.
[0008] Furthermore, the bottom surfaces of the outer frame and the inner frame are provided with bottom surface positioning grooves, which cooperate with the bottom plate, and one end of the outer frame is provided with side positioning grooves, which facilitate positioning. Through the cooperation of the positioning grooves and the bottom plate, the stability of the entire key structure can be enhanced and the shaking during use can be reduced. The design of the side positioning grooves makes it easy for the installer to observe and correct the position of the outer frame during the installation process to ensure correct installation.
[0009] Furthermore, the outer frame is hinged to the keycap via an outer shaft, a plurality of first support blocks are fixed to the outer frame, and the first support blocks are arranged in an array along the axis of the outer shaft, and the inner frame is hinged to the keycap via an inner shaft, and a second support block is arranged on the inner frame, and the second support block is arranged along the axis of the inner shaft. The keycap is supported by two different support blocks, and the pressure can be dispersed on different axes, which can reduce the tilt or swing caused by a single support point, making the key action more stable.
[0010] Furthermore, the inner frame is provided with limit blocks on both sides close to the special-shaped rotating shaft, and the inner side of the outer frame is provided with limit grooves corresponding to the limit blocks, and the gap between the limit blocks and the limit grooves is 0.25 mm. The use of the limit blocks and the limit grooves can prevent the inner frame from rotating beyond the limit range, avoid possible structural damage or functional failure, and improve the safety of the entire key system.
[0011] Furthermore, the gap between the cylindrical plane and the circular hole plane is 0.1 mm, and the offset distance of the horizontal section is 0.17 mm. Appropriate gaps can prevent the inner frame from getting stuck in the outer frame.
[0012] The beneficial effects that this technical solution can produce.
[0013] The utility model reduces the tolerance gap between the large cut cylinder and the large cut circular hole when the large cut cylinder rotates, thereby reducing shaking, and can make the keycap recover more smoothly, improving the feel of the key press; when the keycap recovers, the guide block is away from the plane of the circular hole, reducing the resistance in the recovery process, so that the keycap can return to the original position more smoothly; through the interaction between the plane of the cylinder and the plane of the circular hole, a limiting support is provided for the inner frame, which prevents the inner frame from rotating excessively and ensures the stability of the keyboard keys during use. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 It is a partial three-dimensional structural schematic diagram of the utility model;
[0016] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;
[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model when viewed from above;
[0018] Figure 4 It is a bottom view of the utility model;
[0019] Figure 5 It is a cross-sectional view of the rotating shaft of the utility model;
[0020] Figure 6 for Figure 1 A local enlarged schematic diagram of the middle A;
[0021] Figure 7 for Figure 5 A local enlarged schematic diagram of point B in the middle.
[0022] Among them: 1. outer frame, 2. inner frame, 3. large cut cylinder, 4. large cut circular hole, 5. circular hole plane, 6. slide groove, 7. cylindrical plane, 8. guide block, 9. inclined section, 10. horizontal section, 11. inclined plate, 12. side positioning groove, 13. bottom positioning groove, 14. outer rotating shaft, 15. first support block, 16. inner rotating shaft, 17. second support block, 18. limit block, 19. limit groove, 20. reinforcement plate. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] like Figure 1 , 2 As shown in 5-7, the utility model embodiment provides a combined keyboard key bracket including an outer frame 1 and an inner frame 2, special-shaped rotating shafts are provided on both sides of the inner frame 2, large circular holes 4 are provided on both sides of the outer frame 1, and a circular hole plane 5 is provided on the large circular hole 4, the special-shaped rotating shaft rotates in the large circular hole 4, the large circular hole 4 is connected with an L-shaped slide groove 6, and the end of the slide groove 6 away from the large circular hole 4 is connected with the top surface of the outer frame 1, the special-shaped rotating shaft includes a large cut cylinder 3, the large cut cylinder 3 includes a cylindrical plane 7, an arc-shaped guide block 8 is provided on the cylindrical plane 7, and a gap is provided between the cylindrical plane 7 and the circular hole plane 5, when the outer frame 1 and the inner frame 2 are both in a horizontal state, the cylindrical plane 7 is parallel to the circular hole plane 5, and the guide block 8 is tangent to the circular hole plane 5, the width of the slide groove 6 is smaller than the diameter of the large circular hole 4, and the axis of the guide block 8 coincides with the center line of the cylindrical plane 7. The cylindrical plane 7 is the plane where the secant on the large cut cylinder 3 is located, and the circular hole plane 5 is the plane where the secant on the large cut circular hole 4 is located. The outer frame 1 can be a plastic material with certain elastic deformation properties, and the materials of the outer frame 1 and the inner frame 2 are both prior art. The cross-sections of the large cut circular hole 4 and the large cut circular cylinder 3 are both large cut circles. The concepts of large cut circles and small cut circles mainly come from the shape between a perfect circle and a semicircle left after a straight line cuts off a part of a perfect circle. When a straight line cuts off a part of a perfect circle, the two parts of the shape formed are both called cut circles, among which the part with a larger area is called a large cut circle, and the part with a smaller area is called a small cut circle.
[0025] During the installation process, the special-shaped shafts on both sides of the inner frame 2 are respectively placed in the slide grooves 6 on both sides of the outer frame 1. The width of the slide groove 6 is smaller than the diameter of the large circular hole 4. The special-shaped shaft needs to use thrust to deform the weaker outer frame 1 at the slide groove 6, so that the width of the slide groove 6 increases and allows the special-shaped shaft to pass through. When the special-shaped shaft enters the large circular hole 4, the special-shaped shaft cannot support the slide groove 6. At this time, the outer frame 1 at the slide groove 6 recovers and blocks the special-shaped shaft from entering the slide groove 6. During use, when the bracket is installed between the bottom plate and the keycap of the key, the keycap will apply a pulling force to the end of the inner frame 2 and the outer frame 1 that are away from each other, so that the outer frame 1 and the inner frame 2 intersect. At this time, one end of the cylindrical plane 7 is aligned with the circular The hole plane 5 is offset, and the cylindrical plane 7 is offset with the circular hole plane 5, which can limit and support the inner frame 2 to prevent excessive rotation of the inner frame 2. When the keycap is pressed, the inner frame 2 and the outer frame 1 rotate relative to each other, and finally the inner frame 2 and the outer frame 1 remain horizontal. In the process of rotating to the horizontal, the guide block 8 gradually approaches the circular hole plane 5, and finally the circular hole plane 5 and the guide block 8 are tangent. The guide block 8 can reduce the gap between the large cut cylinder 3 and the large cut circular hole 4, and reduce the shaking of the keycap. When the keycap is restored again, the guide block 8 is away from the circular hole plane 5, and the restoration of the keycap is smoother. The guide block 8 can reduce the shaking caused by the tolerance between the large cut cylinder 3 and the large cut circular hole 4, and improve the feel of the key.
[0026] like Figure 1 , 5 As shown in FIG. 6 , one end of the slide groove 6 connected to the top surface of the outer frame 1 is an inclined section 9, and one end of the slide groove 6 connected to the large circular hole 4 is a horizontal section 10. The width of the horizontal section 10 is smaller than the minimum diameter of the large circular hole 4. The circular hole plane 5 is close to the top surface of the outer frame 1, and the midline of the horizontal section 10 is far away from the circular hole plane 5.
[0027] Since the outer frame 1 at the horizontal section 10 needs to be deformed, a reinforcing plate 20 can be fixed at the outer frame 1 above the large circular hole 4. By increasing the thickness of the outer frame 1 at the large circular hole 4, the resistance required for deformation at the intersection of the large circular hole 4 and the horizontal section 10 can be increased, so that the resistance required when the large circular cylinder 3 is squeezed out of the large circular hole 4 is increased, and the effect of preventing the inner frame 2 from falling off during natural use is achieved. When the inner frame 2 needs to be removed, the inner frame 2 is rotated so that the inner frame 2 and the outer frame 1 remain vertical. At this time, the cylindrical plane 7 and the circular hole plane 5 are perpendicular to each other, and the diameter of the cylindrical plane 7 provides support for the large circular hole 4 and the circular hole plane 5, so that the width of the intersection of the large circular hole 4 and the horizontal section 10 is increased. At this time, a thrust is applied to both ends of the inner frame 2, so that the inner frame 2 slides out along the slide groove 6 of the horizontal section 10, and the inner frame 2 is removed. By increasing the width, the resistance to pushing out can be reduced, and the special-shaped shaft is prevented from breaking and being damaged when subjected to a large thrust and resistance. By designing the inclined section 9 of the slide 6, it is easier to place the special-shaped shaft at the intersection of the inclined section 9 and the horizontal section 10, and then the special-shaped shaft is inserted into the large circular hole 4 by a simple horizontal thrust, which simplifies the installation process. Once the special-shaped shaft is inserted into the large circular hole 4, the inner frame 2 will be fixed very firmly, reducing the risk of the inner frame 2 accidentally falling off during use. By fixing the reinforcing plate 20 on the outer frame 1 at the large circular hole 4, the thickness of the part is increased, and the resistance required for deformation at the intersection of the large circular hole 4 and the horizontal section 10 is increased, further ensuring the stability and safety of the inner frame 2 during use. The horizontal section 10 can also make the cylindrical plane 7 always rotate in the large circular hole 4, thereby preventing the inner frame 2 from falling off.
[0028] like Figure 1 , 5 -7, an inclined plate 11 is provided between the guide block 8 and one end of the large cut cylinder 3, and the inclined plate 11 is arranged at the end away from the inner frame 2 and the key cap hinged, and the open end of the slide 6 is close to the end of the outer frame 1 and the bottom plate hinged. By providing the inclined plate 11 between the guide block 8 and one end of the large cut cylinder 3, additional support is provided for the guide block 8, ensuring that the guide block 8 will not be deformed when it is rotated to abut against the circular hole plane 5, improving the stability of the inner frame 2 in the outer frame 1, thereby reducing the possibility of accidental movement or falling off of the inner frame 2 during use. The open end of the slide 6 is close to the end of the outer frame 1 and the bottom plate hinged, effectively preventing the special-shaped shaft from falling off from the large cut circular hole 4 during rotation. The special-shaped shaft can only rotate in the large cut circular hole 4, and cannot completely slide out along the slide 6, which increases the safety and reliability of the keyboard keys.
[0029] like Figure 2-4As shown, the bottom surfaces of the outer frame 1 and the inner frame 2 are both provided with a bottom surface positioning groove 13, and the bottom surface positioning groove 13 cooperates with the bottom plate. One end of the outer frame 1 is provided with a side positioning groove 12, and the side positioning groove 12 can facilitate positioning. The bottom plate can be provided with a protrusion, which is clamped in the bottom surface positioning groove 13, and the bottom plate can also be provided with a limiting column clamped with the side positioning groove 12, so that the side positioning groove 12 and the limiting column are abutted to achieve the effect of rapid positioning. The bottom surface positioning groove 13 enables the outer frame 1 and the inner frame 2 to be quickly and accurately installed on the bottom plate, reducing the adjustment time required during the assembly process, thereby improving the assembly efficiency. The side positioning groove 12 not only facilitates the positioning of the outer frame 1, but also enables the installer to clearly observe the installation direction. Through the cooperation of the positioning groove and the side positioning groove 12, the precise position of the outer frame 1 and the inner frame 2 on the bottom plate can be ensured, the consistency of the product is guaranteed, and the difference in feel caused by installation deviation is avoided. The use of the bottom surface positioning groove 13 can reduce the reliance on professional skills, so that non-professionals can also complete the installation quickly and accurately.
[0030] like Figure 1 , 2 As shown, the outer frame 1 is hinged to the keycap through the outer shaft 14, and a plurality of first support blocks 15 are fixed on the outer frame 1. The first support blocks 15 are arranged in an array along the axis of the outer shaft 14. The inner frame 2 is hinged to the keycap through the inner shaft 16. The inner frame 2 is provided with a second support block 17, and the second support block 17 is arranged along the axis of the inner shaft 16. By arranging the first support block 15 and the second support block 17, both the outer frame 1 and the inner frame 2 can effectively support the keycap, ensuring that the pressure of the keycap in any direction can be evenly supported, thereby improving the stability of the keycap and preventing structural deformation in long-term use. By arranging the first support block 15 along the axis of the outer shaft 14 and the second support block 17 along the axis of the inner shaft 16, this design enables the keycap to be evenly distributed on the outer frame 1 and the inner frame 2 when subjected to pressure, thereby enhancing the stability of the entire key structure. It can also enable the keycap to adapt to the operating habits of different users, whether users are accustomed to using the fingertips or fingertips, can get a comfortable key experience.
[0031] like Figure 2-4As shown, both sides of the inner frame 2 close to the special-shaped shaft are provided with a limit block 18, and the inner side of the outer frame 1 is provided with a limit groove 19 corresponding to the limit block 18, and the gap between the limit block 18 and the limit groove 19 is 0.25mm. The limit block 18 not only plays a limiting role, but also can be used as a guiding tool during assembly, so that the inner frame 2 can be quickly and accurately loaded into the outer frame 1, improving the assembly efficiency. The precise fit between the limit block 18 and the limit groove 19 increases the stability of the inner frame 2 in the outer frame 1, reduces the possible accidental movement or fall-off of the inner frame 2 during use, thereby extending the service life of the product. The gap between the limit block 18 and the limit groove 19 is 0.25mm, which not only ensures that the inner frame 2 can rotate smoothly when needed, but also effectively limits its rotation range, preventing the inner frame 2 from rotating excessively. By limiting the rotation range of the inner frame 2, the risk of wear and damage to the special-shaped shaft caused by excessive rotation is reduced, so that the key bracket has higher structural stability and durability, and can maintain good performance in long-term use.
[0032] The gap between the cylindrical plane 7 and the circular hole plane 5 is 0.1mm, and the offset distance of the horizontal section 10 is 0.17mm. The smaller gap helps to limit the relative rotation angle between the inner frame 2 and the outer frame 1, thereby achieving the effect of controlling the key travel. During the assembly process, the installer can more easily slide the large cut cylinder 3 into the large cut circular hole 4 to ensure the correct installation and stable operation of the key bracket. By controlling the offset distance of the horizontal section 10, it can be ensured that the cylindrical plane 7 is always in the large cut circular hole 4, thereby increasing the stability of the inner frame 2 in the outer frame 1 and reducing keyboard failures caused by shaking or external forces during use.
[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A combined keyboard key support, comprising an outer frame (1) and an inner frame (2), characterized in that: The inner frame (2) is provided with a special-shaped rotating shaft on both sides, the outer frame (1) is provided with a large circular hole (4) on both sides, the large circular hole (4) is provided with a circular hole plane (5), the special-shaped rotating shaft rotates in the large circular hole (4), the large circular hole (4) is connected with an L-shaped slide groove (6), the end of the slide groove (6) away from the large circular hole (4) is connected with the top surface of the outer frame (1), the special-shaped rotating shaft includes a large circular cylinder (3), and the large circular cylinder (3) includes a cylindrical plane (7) An arc-shaped guide block (8) is provided on the cylindrical plane (7), and a gap is provided between the cylindrical plane (7) and the circular hole plane (5). When the outer frame (1) and the inner frame (2) are both in a horizontal state, the cylindrical plane (7) is parallel to the circular hole plane (5), and the guide block (8) is tangent to the circular hole plane (5). The width of the slide groove (6) is smaller than the diameter of the large cut circular hole (4), and the axis of the guide block (8) coincides with the center line of the cylindrical plane (7).
2. The combined keyboard key support according to claim 1, characterized in that: The end of the slide groove (6) connected to the top surface of the outer frame (1) is an inclined section (9), the end of the slide groove (6) connected to the large circular hole (4) is a horizontal section (10), the width of the horizontal section (10) is smaller than the minimum diameter of the large circular hole (4), the circular hole plane (5) is close to the top surface of the outer frame (1), and the center line of the horizontal section (10) is far away from the circular hole plane (5).
3. The combined keyboard key support according to claim 1, characterized in that: An inclined plate (11) is provided between the guide block (8) and one end of the large cut cylinder (3), and the inclined plate (11) is arranged at an end away from the inner frame (2) and the key cap hinged end, and the end of the slide groove (6) connected to the top surface of the outer frame (1) is close to the end of the outer frame (1) and the bottom plate hinged end.
4. The combined keyboard key support according to claim 1, characterized in that: The bottom surfaces of the outer frame (1) and the inner frame (2) are both provided with bottom surface positioning grooves (13), which cooperate with the bottom plate. One end of the outer frame (1) is provided with side positioning grooves (12), which facilitate positioning. Through the cooperation between the positioning grooves and the bottom plate, the stability of the entire key structure can be enhanced and shaking during use can be reduced.
5. The combined keyboard key support according to claim 1, characterized in that: The outer frame (1) is hinged to the keycap via an outer rotating shaft (14); a plurality of first support blocks (15) are fixed to the outer frame (1), and the first support blocks (15) are arranged in an array along the axis of the outer rotating shaft (14); the inner frame (2) is hinged to the keycap via an inner rotating shaft (16); a second support block (17) is provided on the inner frame (2), and the second support block (17) is arranged along the axis of the inner rotating shaft (16).
6. The combined keyboard key support according to claim 1, characterized in that: The inner frame (2) is provided with limit blocks (18) on both sides close to the special-shaped rotating shaft, and the inner side of the outer frame (1) is provided with limit grooves (19) corresponding to the limit blocks (18), and the gap between the limit blocks (18) and the limit grooves (19) is 0.25 mm.
7. The combined keyboard key support according to claim 2, characterized in that: The gap between the cylindrical plane (7) and the circular hole plane (5) is 0.1 mm, and the offset distance of the horizontal section (10) is 0.17 mm.