Keyboard satellite shaft based on balance rod and capable of being automatically assembled in adaptive mode

Abstract

The utility model relates to the technical field of keyboard accessories, in particular to a balancing-rod-based keyboard satellite shaft capable of being automatically assembled in a matched mode, a mounting opening is formed in the side face of a shaft seat, the extending direction of the mounting opening is aligned with the horizontal direction of a mounting groove, and a sliding section is directly inserted into the mounting groove of the corresponding shaft center through the mounting opening. And the sliding section can horizontally slide in the mounting groove along with the vertical movement of the axle centers, so that the synchronous linkage of the axle centers at the two ends is realized. Through the horizontal alignment design of the shaft seat lateral mounting opening and the shaft center mounting groove, the linear insertion type assembly of the balance rod is realized, and the process requirements of an automatic production line can be met.

Description

Technical Field

[0001] This utility model relates to the field of keyboard accessories technology, specifically to a keyboard stabilizer bar based on a stabilizer bar that can be automatically assembled. Background Technology

[0002] Stabilizers are auxiliary structures in mechanical keyboards used to stabilize larger keys (such as the spacebar and Enter key). Through symmetrically distributed auxiliary axes and a linkage wire system, they ensure even force distribution when pressing larger keys, preventing one-sided sticking or wobbling. They are widely used in the design of larger keys in mechanical keyboards and in custom keyboards, and are especially suitable for office or study environments requiring a quiet environment. Their core advantages include balanced keystroke force, reduced friction noise, extended lifespan, and the ability to achieve consistency with the feel of larger keys through adjustments (such as lubrication and noise reduction treatments), thereby improving the overall typing experience.

[0003] The applicant's previously submitted utility model patent (CN202123252409.7, entitled "A Button Connection Structure Based on a Balance Bar") is as follows: Figure 1 and Figure 2 As shown in the attached drawings (see specification), a satellite shaft design consisting of a shaft 10, a bearing 20, and a balance bar 30 is disclosed. In this design, the balance bar 30 comprises a rotating section 33, a transmission section 32, and a sliding section 31. Its installation requires the following complex steps: Step 1: Place the shaft 10 into the bearing 20 through the bottom of the bearing 20; Step 2: Position the balance bar 30 sideways, allowing the sliding section 31 to pass through the opening 23 of the bearing 20. Manually adjust the angle of the balance bar 30 and engage the sliding section 31 into the mounting groove 11 of the shaft 10; Step 3: Engage the rotating section 33 into the slot 21 of the bearing 20; Step 4: Complete the assembly.

[0004] However, in actual production, it was found that the above installation process, especially the second step, required multiple manual adjustments from various angles, resulting in low operational error tolerance and low assembly efficiency. This problem severely limited the product's application scenarios—it could only be promoted on a small scale to DIY enthusiasts and could not adapt to the needs of mechanized mass production. To address this, the applicant optimized and improved the satellite axis structure, significantly simplifying the installation process through the redesign of key component shapes and assembly paths, making it compatible with automated production lines, and thus expanding into the consumer keyboard market. Utility Model Content

[0005] To achieve the purpose of this utility model, this application provides a keyboard satellite axis based on a stabilizer bar that can be automatically assembled, comprising two mirror-symmetrically arranged satellite axis modules, each module consisting of a pivot and a vertically movable axis.

[0006] The bearing seat is provided with a vertical channel for accommodating the shaft, the bottom of the shaft has a horizontal mounting groove, and the outer wall of the bearing seat is provided with a retaining groove.

[0007] A balance bar includes a rotating section and sliding sections at both ends. The rotating section and the sliding sections are connected by a transmission section. The rotating section is engaged in a slot in two bearing seats.

[0008] The side of the bearing seat has an installation port, the extension direction of which is aligned with the horizontal direction of the mounting groove. The sliding segment is directly inserted into the mounting groove of the corresponding shaft through the installation port, and the sliding segment can slide horizontally in the mounting groove with the vertical movement of the shaft, so as to realize the synchronous linkage of the two shafts.

[0009] In some specific embodiments, the surfaces of the two long sidewalls of the mounting groove of the shaft are symmetrical arc surfaces.

[0010] In some specific embodiments, the difference between the width of the mounting groove of the shaft and the diameter of the sliding section is less than 0.08 mm.

[0011] In some specific embodiments, the mounting port is an elongated groove with one open end and a semi-circular arc at its closed end, with the open end extending in a direction aligned with the horizontal direction of the mounting groove.

[0012] The beneficial effects of the above technical solution are as follows:

[0013] This technical solution optimizes the bearing structure by creating a mounting opening on the side of the bearing that is precisely aligned horizontally with the shaft mounting slot. This allows the sliding section of the stabilizer bar to be directly inserted into the corresponding slot along a straight path, completely eliminating the tedious steps of repeatedly adjusting angles in traditional assembly. This improvement significantly simplifies the installation process, substantially enhances assembly efficiency and consistency, reduces reliance on manual operation, and perfectly adapts to the precision requirements of mechanized mass production, providing a reliable foundation for large-scale production. Simultaneously, it ensures a tight and smooth fit between the sliding section and the slot, effectively reducing frictional noise and giving the satellite shaft both high-efficiency production and a stable feel. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0015] Figure 1 Exploded view of the structure of a satellite axis using existing technology;

[0016] Figure 2 This is a schematic diagram of the installation of a satellite axis using existing technology.

[0017] Figure 3An exploded view of a satellite axis provided in one embodiment of this utility model;

[0018] Figure 4 A schematic diagram of satellite axis installation provided for one embodiment of this utility model;

[0019] Figure 5 A transverse sectional view of a satellite axis provided in one embodiment of the present invention;

[0020] Figure 6 A schematic diagram of the structure of the bearing seat for a satellite axis provided in one embodiment of the present utility model;

[0021] Figure 7 A reverse side view of the bearing seat of a satellite axis provided in one embodiment of the present invention;

[0022] Figure 8 A reverse front view of the bearing seat of a satellite axis provided in one embodiment of the present invention;

[0023] Figure 9 A top view of a satellite axis bearing provided in one embodiment of the present invention;

[0024] Figure 10 A schematic diagram of the structure of the axis of a satellite axis provided in one embodiment of this utility model;

[0025] Figure 11 A front view of the axis center of a satellite axis provided in one embodiment of the present invention;

[0026] Figure 12 A side view of the axis of a satellite axis provided in one embodiment of the present invention;

[0027] Figure 13 A top view of the axis of a satellite axis provided in one embodiment of the present invention;

[0028] Figure 14 A top view of a satellite axis provided in one embodiment of the present invention;

[0029] Figure 15 for Figure 14 Cross-sectional view of the satellite axis along the AA direction;

[0030] Figure 16 This is a schematic diagram of the structure of the satellite axis and keycap in the prior art;

[0031] Figure 17 A side view of the satellite axis and keycap in the prior art;

[0032] Figure 18 for Figure 17 Cross-sectional view in the BB direction;

[0033] Figure 19 for Figure 18 Enlarged view of the structure of region A in the image;

[0034] Figure 20 A side view of the axis of a satellite axis provided in one embodiment of the present invention;

[0035] Figure 21 for Figure 20 Cross-sectional view in the CC direction;

[0036] Figure 22 A cross-sectional view of the axis and sliding section of a satellite axis provided in one embodiment of this utility model;

[0037] Figure 23 A cross-sectional view of the satellite axis and sliding section deflected to the right in one embodiment of this utility model;

[0038] Figure 24 A cross-sectional view of the leftward deflection of the axis and sliding segment of the satellite axis provided in one embodiment of this utility model;

[0039] Figure 25 An exploded view of a steel plate satellite axis provided in one embodiment of this utility model;

[0040] Figure 26 This is a schematic diagram of the structure of the bearing seat of the steel plate satellite shaft provided in one embodiment of the present invention;

[0041] Figure 27 A front view of the bearing seat of a steel plate satellite shaft provided in one embodiment of the present invention;

[0042] Figure 28 A side view of the bearing seat of a steel plate satellite shaft provided in one embodiment of the present utility model;

[0043] Figure 29 A top view of the bearing seat of a steel plate satellite shaft provided in one embodiment of the present invention.

[0044] Among them, 10 is the shaft; 11 is the mounting groove; 20 is the shaft seat; 21 is the slot; 22 is the vertical channel; 23 is the opening; 24 is the mounting port; 30 is the balance bar; 31 is the sliding section; 32 is the transmission section; 33 is the rotating section; and 40 is the keycap. Detailed Implementation

[0045] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0046] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0047] Based on the mounting base type, stabilizer switches can be divided into two categories: PCB stabilizer switches and plate stabilizer switches. The former is fixed to the keyboard PCB base with clips, while the latter is mounted on a metal positioning plate. Both types of stabilizer switches consist of three core components: the switch housing, the switch stem, and the stabilizer bar. Due to their similar structural dimensions, plate stabilizer switches suffer from the same assembly efficiency bottleneck as PCB stabilizer switches (see background technology analysis for details). This embodiment takes the PCB stabilizer switch as an example to elaborate on a stabilizer bar-based keyboard stabilizer switch that is adaptable to automatic assembly, specifically as follows: Figure 3 and Figures 5 to 13 As shown, the system includes two symmetrically arranged satellite axis modules, each consisting of a bearing seat 20 and a vertically movable shaft 10. The bearing seat 20 has a vertical channel 22 for accommodating the shaft 10, and a horizontal mounting groove 11 at the bottom of the shaft 10. The outer wall of the bearing seat 20 has a retaining groove 21. The balance bar 30 includes a rotating section 33 and sliding sections 31 at both ends. The rotating section 33 and the sliding section 31 are connected by a transmission section 32. The rotating section 33 is engaged in the retaining groove 21 of the two bearing seats 20. The side of the bearing seat 20 has a mounting opening 24, one end of which is open, and its closed end can adopt different structures such as a square. In this embodiment, a semi-circular arc is used. This structure optimizes stress distribution and avoids the risk of crack initiation at right angles. The mounting port 24 is connected to the opening 23 in the bearing seat 20. The extension direction of the mounting port 24 is aligned with the horizontal direction of the mounting groove 11. The sliding section 31 is directly inserted into the mounting groove 11 of the corresponding shaft 10 through the mounting port 24. The sliding section 31 can slide horizontally in the mounting groove 11 with the vertical movement of the shaft 10, so as to realize the synchronous linkage of the two shafts 10.

[0048] Furthermore, during installation, such as Figure 4 As shown: 1. Place the shaft 10 through the bottom of the shaft seat 20 into the vertical channel 22 of the shaft seat 20; 2. Insert the sliding section 31 directly into the mounting groove 11 of the corresponding shaft 10 through the mounting port 24; 3. Snap the rotating section 33 into the slot 21 of the shaft seat 20; 4. Complete the assembly.

[0049] Therefore, this technical solution improves the structure of the bearing seat 20 by providing a mounting opening 24 on the side of the bearing seat 20 that precisely matches the horizontal direction of the mounting groove 11 of the shaft 10. This allows the sliding section 31 of the balance bar 30 to directly embed into the corresponding groove in a linear motion, completely eliminating the complex operation of repeatedly correcting angles required in traditional assembly processes. This structural innovation makes the assembly process simpler and more efficient, improving assembly speed and process stability while reducing reliance on manual operation. It fully meets the dual requirements of precision and efficiency for mechanized mass production, laying a technical foundation for mass production standardization.

[0050] In a preferred embodiment of this utility model, the difference between the width of the mounting groove 11 of the shaft 10 and the diameter of the sliding section 31 is less than 0.08 mm. That is, as... Figure 14 and Figure 15 As shown, the width of the mounting groove 11 is D1, and the diameter of the sliding section 31 is D2, where D1-D2 < 0.08mm. Controlling the difference between the width of the mounting groove 11 and the diameter of the sliding section 31 within 0.08mm achieves a balance between tight fit and minimal clearance, reducing shaking and frictional noise, while ensuring smooth sliding and assembly accuracy, improving consistent feel, and extending service life.

[0051] In one specific embodiment of this utility model, such as Figure 16 , Figure 17 and Figure 18 As shown, it also includes a keycap 40. During the injection molding cooling stage, the keycap 40 is prone to plastic deformation due to the temperature gradient and uneven distribution of residual stress. Specifically, the keycap 40 substrate exhibits deformation characteristics of outward or inward curvature at both ends. When this type of deformed keycap 40 is rigidly connected to the spindle 10, the deformation of the keycap 40 is transmitted to the spindle 10 through the rigid connection, forcing the spindle 10 to deflect along the deformation direction. (The image shows a cross-section.) Figure 18 It is evident that the mounting groove 11 of the shaft 10 and the steel wire of the balance bar 30 are planarly fitted with precisely controlled clearance. Under the condition of shaft 10 deflection, angular interference is prone to occur in the contact area between the groove edge and the steel wire. Figure 19 (The middle circle shows the area). This geometric interference not only causes the sliding motion trajectory to deviate, but also causes the steel wire to slide non-smoothly in the groove and friction noise, which seriously affects the striking feel and the acoustic performance of the equipment.

[0052] Furthermore, regarding the interference problem between the shaft 10 and the balance bar 30, such as... Figure 20 As shown, the two long sidewalls of the mounting groove 11 are optimized into a symmetrical arc-shaped transition structure (e.g., Figure 21 (As shown). By replacing the original planar fit with a conjugate curved surface dynamic adaptation design, the axis 10 can withstand the deflection posture caused by the bending deformation of the keycap 40 (as shown). Figure 22 , 23As shown in Figure 24), the contact area between the groove and the sliding section 31 always maintains a uniform stress distribution and clearance control, completely eliminating the jamming and noise caused by edge friction. This curved surface mating mechanism ensures linear compensation of the sliding trajectory during the deflection of the shaft 10 through geometric adaptability, thereby achieving interference-free smooth tapping under all working conditions.

[0053] In one embodiment of this utility model, such as Figures 25 to 29 As shown in the figure, this embodiment specifically illustrates a steel plate satellite axis using this technical solution, including two satellite axis modules. Each module consists of a bearing seat 20 and a vertically movable shaft 10. The bearing seat 20 is provided with a vertical channel 22 for accommodating the shaft 10, and the bottom of the shaft 10 has a horizontal mounting groove 11. The outer wall of the bearing seat 20 is provided with a retaining groove 21. The balance bar 30 includes a rotating section 33 and sliding sections 31 at both ends. The rotating section 33 and the sliding section 31 are connected through a transmission section 32. The rotating section 33 is engaged with the two bearing seats. The bearing seat 20 has a mounting port 24 on its side. The mounting port 24 is an elongated oval groove with one open end and a semi-circular arc at its closed end. The mounting port 24 is connected to the opening 23 inside the bearing seat 20. The extension direction of the mounting port 24 is aligned with the horizontal direction of the mounting groove 11. The sliding section 31 is directly inserted into the mounting groove 11 of the corresponding shaft 10 through the mounting port 24. The sliding section 31 can slide horizontally in the mounting groove 11 with the vertical movement of the shaft 10, realizing the synchronous linkage of the two shafts 10. Through the horizontal alignment design of the side mounting port 24 of the bearing seat 20 and the mounting groove 11 of the shaft 10, the linear insertion assembly of the balance bar 30 is realized, which is compatible with the process requirements of automated production lines.

[0054] In the description of this specification, the references to terms such as "an embodiment," "some embodiments," "example," "specific example," "a specific embodiment," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A keyboard stabilizer based on a stabilizer bar and adaptable to automatic assembly, comprising two mirror-symmetrically arranged stabilizer modules, each module consisting of a pivot (20) and a vertically movable pivot (10); The bearing seat (20) is provided with a vertical channel (22) for accommodating the shaft (10), the bottom of the shaft (10) is provided with a horizontal mounting groove (11), and the outer wall of the bearing seat (20) is provided with a slot (21). The balance bar (30) includes a rotating section (33) and sliding sections (31) at both ends. The rotating section (33) and the sliding section (31) are connected by a transmission section (32). The rotating section (33) is engaged in the slot (21) of the two bearing seats (20). Its features are, The side of the bearing seat (20) is provided with an installation port (24). The extension direction of the installation port (24) is aligned with the horizontal direction of the installation groove (11). The sliding segment (31) is directly inserted into the installation groove (11) of the corresponding shaft (10) through the installation port (24). The sliding segment (31) can slide horizontally in the installation groove (11) with the vertical movement of the shaft (10), so as to realize the synchronous linkage of the two shafts (10).

2. The keyboard stabilizer based on a balance bar and adaptable to automatic assembly as described in claim 1, characterized in that, The surfaces of the two long sidewalls of the mounting groove (11) of the shaft (10) are symmetrical arc surfaces.

3. The keyboard stabilizer based on a balance bar and adaptable to automatic assembly as described in claim 1, characterized in that, One end of the mounting port (24) is open, and the direction of the open end is aligned with the horizontal direction of the mounting groove (11).

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