Keyboard synchronization buffer structure, keyboard and force synchronization method

Abstract

The invention relates to the technical field of keyboard structures, in particular to a keyboard synchronization buffer structure, a keyboard and a force synchronization method. Comprising a first driving shaft and a second driving shaft which are horizontally arranged D-head optical axes, the first driving shaft is horizontally arranged at the front end of a keyboard base, and the second driving shaft is horizontally arranged at the rear end of the keyboard base and is parallel to the keyboard base; each buffer assembly comprises a spring fixing part, a guide shaft, a spring sleeve and a spring; the spring fixing piece is fixedly connected with the end part of the driving shaft; the upper end of the guide shaft is movably connected with the spring fixing piece; the spring sleeve is sleeved outside the guide shaft; the guide shaft is sleeved with the spring, the upper end abuts against the spring sleeve, and the lower end abuts against the keyboard base; and a linkage assembly. The technical problems that according to an existing keyboard buffering mode of a Gasket structure, supporting is not uniform, pressing consistency cannot be guaranteed, and the buffering stroke is limited by materials are solved.

Description

Technical Field

[0001] This invention relates to the field of keyboard structure technology, and in particular to a keyboard synchronization buffer structure, a keyboard, and a force synchronization method. Background Technology

[0002] With the development of computer technology, the keyboard, as an important component of computer input devices, has received increasing attention from users regarding its user experience. To improve keyboard comfort, various cushioning structures are widely used in keyboard design. Currently, the mainstream cushioning structure on the market is the Gasket structure.

[0003] However, existing Gasket-structure keyboard cushioning methods have the following technical problems: First, the support points of the inner cylinder are usually distributed on the edge of the positioning plate, and the elasticity of the positioning plate itself makes the support for the inner cylinder uneven; Second, when the user presses the middle position of the keyboard, multiple points are subjected to force simultaneously, while pressing the edge only requires a single point to be subjected to force. The difference in distance between the points also affects the support force, resulting in a lack of consistency in the pressing feel of different areas of the keyboard. This problem is particularly prominent in large keyboard layouts; Third, since traditional cushioning structures mostly use materials such as Poron and EVA, their elastic characteristics are limited by the limits of the materials themselves, making it difficult to accurately plan the cushioning stroke and force during the design stage, thus affecting the user experience.

[0004] Therefore, there is an urgent need for a keyboard synchronization buffer structure that can solve the above problems in order to improve the comfort and stability of keyboard use. Summary of the Invention

[0005] The purpose of this invention is to solve the following technical problems: the existing Gasket structure keyboard cushioning method has defects such as uneven support, inability to guarantee consistent pressing, and material limitations in the cushioning stroke, so as to achieve the technical effect of uniform force distribution in the keyboard inner tube, controllable cushioning stroke, and good versatility.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] According to a first aspect of the present invention, a keyboard synchronization buffer structure is provided, comprising a keyboard base, a mechanism housing fixed to the keyboard base; a first drive shaft and a second drive shaft, which are horizontally arranged D-type optical shafts, the first drive shaft being horizontally arranged at the front end of the keyboard base and the second drive shaft being horizontally arranged at the rear end of the keyboard base, the two being parallel; four sets of buffer assemblies, each set of buffer assemblies including a spring fixing member, a guide shaft, a spring sleeve, and a spring; the spring fixing member being fixedly connected to the end of the drive shaft; the upper end of the guide shaft being movably connected to the spring fixing member, and the lower end being fixed to the keyboard base; the spring sleeve being sleeved outside the guide shaft; and the spring being sleeved on the guide shaft. Externally, the upper end abuts against the spring sleeve, and the lower end abuts against the keyboard base; the linkage assembly includes: two connecting rods, the first connecting rod connecting the first end of the first drive shaft and the second drive shaft, and the second connecting rod connecting the second end of the first drive shaft and the second drive shaft; two gear shafts, horizontally arranged in the middle of the keyboard base, parallel to the drive shafts; four gears, fixed to both ends of the gear shafts; four cantilever arms, each cantilever arm having a first hole and a second hole, the first hole fitting onto the end of one drive shaft, and the second hole fitting onto the end of one gear shaft; and two gears on the same side meshing with each other; and several connecting pieces, disposed on the drive shaft, for connecting the keyboard inner tube.

[0008] Furthermore, the spring fixing member has a horizontal through groove, and the through groove is provided with a connection positioning groove that matches the cross section of the drive shaft, and the end of the drive shaft is fixed in the connection positioning groove.

[0009] Furthermore, the spring fixing member has a vertically formed through hole, and the guide shaft is vertically inserted into the through hole of the spring fixing member to form a sliding connection.

[0010] Furthermore, the two connecting rods, together with the first drive shaft and the second drive shaft, form a rectangular rigid frame.

[0011] Furthermore, the gear shaft is connected to the housing of the mechanism via bearings.

[0012] Furthermore, the shapes of the first and second holes on the cantilever are respectively matched with the cross-sectional shapes of the drive shaft and the gear shaft.

[0013] Furthermore, the keyboard base has a groove in the middle for mounting the gear shaft.

[0014] Furthermore, the connector is made of silicone material.

[0015] According to a second aspect of the present invention, a keyboard is provided, comprising a keyboard top cover, a keyboard base, and a keyboard inner tube, wherein the keyboard base is provided with the aforementioned keyboard synchronization buffer structure, and the keyboard inner tube is supported on the drive shaft via the connector.

[0016] According to a third aspect of the present invention, a force synchronization method for the above-described keyboard synchronization buffer structure is provided, comprising the following processes: the pressure on the keyboard inner tube is transmitted to the drive shaft through the connector; the drive shaft generates radial displacement after being subjected to pressure, and drives the spring fixing member fixedly connected thereto to move downward, compressing the spring; simultaneously, the radial displacement of the drive shaft drives the cantilever to rotate; the rotation of the cantilever drives the gear shaft to rotate; the meshing gears synchronously transmit the rotational motion to the entire linkage assembly, forcing all the drive shafts to move in coordination, thereby achieving synchronous compression of all the springs.

[0017] The advantages of implementing this invention are:

[0018] 1. This invention forms a rigid linkage frame by setting up linkage components, including cantilever, gear and connecting rod. When the keyboard inner tube is subjected to pressure, the pressure is transmitted to the drive shaft through the connecting parts. The radial displacement of the drive shaft distributes the pressure evenly at the four corners through the meshing of the cantilever and gear. This significantly improves the consistency of the support force in the effective area when the positioning plate has a certain rigidity, thus solving the problem of uneven support in the existing Gasket structure.

[0019] 2. The main mechanical structure of the present invention is distributed outside the inner liner. Through the combined design of guide shaft, spring sleeve and spring, the maximum stroke of the structure is significantly greater than that of traditional structures such as Gasket, while not significantly increasing the overall height. This overcomes the defect of the buffer stroke being limited by material limits in the prior art, and allows for precise planning of stroke and force during the design stage.

[0020] 3. The structure of this invention has good versatility. By changing the form of the silicone connector or by using low-cost and simple methods such as custom positioning plates, other PCBs with the same layout can be transplanted to this structural platform, which improves the flexibility and adaptability of keyboard design.

[0021] 4. This invention achieves a synchronous buffering effect when the keyboard inner tube is subjected to force through the synergistic action of the linkage components. No matter where the key is pressed, a consistent tactile experience can be obtained. It is especially suitable for large-size keyboard layouts and effectively solves the problem of insufficient consistency in large keyboard layouts in the prior art. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the keyboard synchronization buffer structure described in this invention;

[0024] Figure 2 This is a schematic diagram of the keyboard synchronization buffer structure with the keyboard inner tube removed according to the present invention;

[0025] Figure 3 This is a schematic diagram of the keyboard described in this invention.

[0026] In the diagram: 1. Keyboard base; 2. Mechanism housing; 3. First drive shaft; 4. Second drive shaft; 5. Buffer assembly; 501. Spring fixing piece; 5011. Positioning groove; 5012. Through hole; 502. Guide shaft; 503. Spring sleeve; 504. Spring; 6. Linkage assembly; 601. First connecting rod; 602. Second connecting rod; 603. Gear shaft; 604. Gear; 605. Cantilever; 7. Connector; 8. Keyboard inner shell; 9. Keyboard top cover. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1:

[0029] like Figures 1-2 As shown, a keyboard synchronization buffer structure includes a keyboard base 1, a mechanism housing 2, a first drive shaft 3, a second drive shaft 4, four sets of buffer components 5, and a linkage component 6.

[0030] The outer casing 2 of the mechanism box is fixed to the keyboard base 1 to protect the internal mechanism and provide support.

[0031] Both the first drive shaft 3 and the second drive shaft 4 are horizontally arranged D-type optical axes. The first drive shaft 3 is horizontally arranged at the front end of the keyboard base 1, and the second drive shaft 4 is horizontally arranged at the rear end of the keyboard base 1. The two drive shafts are parallel to each other. The special cross-sectional shape of the D-type optical axis can effectively prevent slippage when transmitting torque, ensuring synchronous movement between the components.

[0032] Four sets of buffer assemblies 5 are respectively installed at both ends of the two drive shafts. Each set of buffer assembly 5 includes a spring retainer 501, a guide shaft 502, a spring sleeve 503, and a spring 504. The spring retainer 501 is fixedly connected to the end of the drive shaft. The spring retainer 501 has a horizontal through groove, and the through groove has a connection positioning groove that matches the cross-section of the drive shaft. The end of the drive shaft is fixed in the connection positioning groove. This design ensures a firm connection between the spring retainer 501 and the drive shaft and prevents loosening during use. The spring retainer 501 has a vertical through hole, and the guide shaft 502 is vertically inserted into the through hole of the spring retainer 501 to form a sliding connection. This sliding connection allows the spring retainer 501 to move freely up and down on the guide shaft 502, providing the necessary movement space for the buffer system. The upper end of the guide shaft 502 is movably connected to the spring retainer 501, and the lower end is fixed to the keyboard base 1, providing stable support for the entire buffer assembly 5. Spring sleeve 503 is sleeved on the outside of guide shaft 502 and can slide up and down along guide shaft 502. Spring 504 is sleeved on the outside of guide shaft 502, with its upper end abutting against spring sleeve 503 and its lower end abutting against keyboard base 1. When the keyboard is impacted, spring 504 is compressed, absorbing and mitigating the impact force and protecting the internal structure of the keyboard.

[0033] The linkage assembly 6 includes two connecting rods, two gear shafts 603, four gears 604, and four cantilever arms 605. The first connecting rod 601 connects the first ends of the first drive shaft 3 and the second drive shaft 4, and the second connecting rod 602 connects the second ends of the first drive shaft 3 and the second drive shaft 4. The two connecting rods, together with the first drive shaft 3 and the second drive shaft 4, form a rectangular rigid frame. This rigid frame structure ensures the stability and synchronization of the entire system during operation, preventing the drive shafts from twisting or misaligning during movement. The two gear shafts 603 are horizontally arranged in the middle of the keyboard base 1, parallel to the drive shafts. The middle of the keyboard base 1 has grooves for mounting the gear shafts 603, providing a stable installation position and facilitating assembly and maintenance of the entire structure. The gear shafts 603 are connected to the housing 2 via bearings. The use of bearings reduces friction during rotation of the gear shafts 603, improving the smoothness of movement and the sensitivity of the system. The four gears 604 are fixed to both ends of the gear shafts 603 for transmitting motion and force. Each of the four cantilever arms 605 has a first hole and a second hole. The first hole is fitted onto the end of a drive shaft, and the second hole is fitted onto the end of a gear shaft 603. The shapes of the first and second holes on the cantilever arms 605 match the cross-sectional shapes of the drive shaft and gear shaft 603, respectively. This matching design ensures a tight connection between the cantilever arms 605 and the shafts, preventing loosening or slippage during use. Two gears 604 on the same side mesh with each other, and the meshing transmission of the gears 604 ensures the synchronous movement of the entire system.

[0034] Connector 7 is located on the drive shaft and is used to connect the keyboard inner tube 8. Connector 7 is made of silicone material, which has good elasticity and durability and can effectively reduce vibration and noise during keyboard use.

[0035] During use, when the user presses the keyboard, the force is transmitted to the drive shaft through the connector 7. The drive shaft causes the spring retainer 501 to move downwards, and the spring retainer 501 slides down along the guide shaft 502, simultaneously compressing the spring 504. Since the four sets of buffer components 5 are connected to the two drive shafts, and the drive shafts form a rigid frame through the connecting rods, the downward pressing action at the four corners is synchronized. At the same time, the rotation of the drive shaft drives the gear shaft 603 to rotate through the cantilever 605, and the gears 604 on the gear shaft 603 mesh with each other, further ensuring the synchronization of the system. When the user releases the pressing force, the spring 504 rebounds, pushing the spring retainer 501 and the drive shaft back to their original positions, and the keyboard returns to its initial state.

[0036] This keyboard synchronization buffer structure achieves synchronized buffering at the four corners of the keyboard through the coordinated work of four sets of buffer components 5 and linkage components 6, effectively reducing vibration and noise during keyboard use and improving the user's typing experience.

[0037] Example 2:

[0038] like Figures 1-3 As shown, a keyboard includes a keyboard top cover 9, a keyboard base 1, and a keyboard inner tube 8. The keyboard base 1 is provided with a keyboard synchronization buffer structure, and the keyboard inner tube 8 is supported on a drive shaft via a connector 7.

[0039] The specific structure of the keyboard synchronization buffer structure is the same as described in Embodiment 1, including a mechanism housing 2 fixed to the keyboard base 1, a first drive shaft 3 and a second drive shaft 4, four sets of buffer components 5, and a linkage component 6. The first drive shaft 3 is horizontally arranged at the front end of the keyboard base 1, and the second drive shaft 4 is horizontally arranged at the rear end of the keyboard base 1. They are parallel and are both horizontally arranged D-type optical axes. The four sets of buffer components 5 are respectively set at both ends of the two drive shafts. Each set of buffer components 5 includes a spring fixing member 501, a guide shaft 502, a spring sleeve 503, and a spring 504. The linkage component 6 includes two connecting rods, two gear shafts 603, four gears 604, four cantilever arms 605, and a connecting member 7.

[0040] In this embodiment, the keyboard inner shell 8 is supported on the drive shaft by a connector 7. The connector 7 is made of silicone material, which has good elasticity and durability, and can effectively reduce vibration and noise during keyboard use. The keyboard top cover 9 covers the keyboard inner shell 8, forming a complete keyboard appearance.

[0041] When a user types on the keyboard, the force of the keystrokes is transmitted through the keyboard housing 8 to the connector 7, and then from the connector 7 to the drive shaft. The drive shaft drives the entire buffer system. Four sets of buffer components 5 synchronously compress the springs 504 to absorb impact and reduce vibration and noise during typing. When the user releases the key, the springs 504 rebound, pushing the entire system back to its original position.

[0042] This keyboard structure combines a synchronized cushioning structure with the keyboard inner shell 8, achieving synchronized cushioning at all four corners of the keyboard, thus improving typing comfort and stability. At the same time, the use of silicone connectors 7 further enhances the cushioning effect and extends the keyboard's lifespan.

[0043] Example 3:

[0044] like Figures 1-3 As shown, in this embodiment, a force synchronization method based on a keyboard synchronization buffer structure is provided. The method is applied to a keyboard synchronization buffer structure, which includes a keyboard base 1, a mechanism housing 2 fixed to the keyboard base 1, a first drive shaft 3 and a second drive shaft 4, four sets of buffer components 5, and a linkage component 6.

[0045] The first drive shaft 3 and the second drive shaft 4 are horizontally arranged D-type optical shafts. The first drive shaft 3 is horizontally arranged at the front end of the keyboard base 1, and the second drive shaft 4 is horizontally arranged at the rear end of the keyboard base 1, with the two arranged parallel to each other. Each of the four sets of buffer assemblies 5 includes a spring retainer 501, a guide shaft 502, a spring sleeve 503, and a spring 504. The spring retainer 501 is fixedly connected to the end of the drive shaft; the upper end of the guide shaft 502 is movably connected to the spring retainer 501, and the lower end is fixed to the keyboard base 1; the spring sleeve 503 is sleeved on the outside of the guide shaft 502; the spring 504 is sleeved on the outside of the guide shaft 502, with the upper end abutting against the spring sleeve 503 and the lower end abutting against the keyboard base 1.

[0046] The linkage assembly 6 includes two connecting rods, two gear shafts 603, four gears 604, and four cantilever arms 605. The first connecting rod 601 connects the first ends of the first drive shaft 3 and the second drive shaft 4, and the second connecting rod 602 connects the second ends of the first drive shaft 3 and the second drive shaft 4. The two gear shafts 603 are horizontally arranged in the middle of the keyboard base 1, parallel to the drive shafts. The four gears 604 are fixed to both ends of the gear shafts 603. Each of the four cantilever arms 605 has a first hole and a second hole; the first hole is fitted onto the end of a drive shaft, and the second hole is fitted onto the end of a gear shaft 603; and the two gears 604 on the same side mesh with each other. A connector 7 is disposed on the drive shaft and is used to connect the keyboard inner tube 8.

[0047] Specifically: the four buffer assemblies 5 are a first buffer assembly, a second buffer assembly, a third buffer assembly, and a fourth buffer assembly. The first buffer assembly includes: a first spring fixing member, a first guide shaft, a first spring sleeve, and a first spring, with the first spring fixing member connected to the first end of the first drive shaft; the second buffer assembly includes: a second spring fixing member, a second guide shaft, a second spring sleeve, and a second spring, with the second spring fixing member connected to the second end of the first drive shaft; the third buffer assembly includes: a third spring fixing member, a third guide shaft, a third spring sleeve, and a third spring, with the third spring fixing member connected to the first end of the second drive shaft; the fourth buffer assembly includes: a fourth spring fixing member, a fourth guide shaft, a fourth spring sleeve, and a fourth spring, with the fourth spring fixing member connected to the second end of the second drive shaft.

[0048] The four cantilever arms 605 are the first cantilever arm, the second cantilever arm, the third cantilever arm, and the fourth cantilever arm. The first cantilever arm is hinged to the first end of the first drive shaft; the second cantilever arm is hinged to the second end of the first drive shaft; the third cantilever arm is hinged to the first end of the second drive shaft; and the fourth cantilever arm is hinged to the second end of the second drive shaft.

[0049] The two gear shafts 603 are a first gear shaft and a second gear shaft, respectively. A first cantilever is hinged to the first end of the first gear shaft; a second cantilever is hinged to the second end of the first gear shaft; a third cantilever is hinged to the first end of the second gear shaft; and a fourth cantilever is hinged to the second end of the second gear shaft.

[0050] The first end of the first gear shaft is connected to the first gear, and the second end of the first gear shaft is connected to the second gear; the first end of the second gear shaft is connected to the third gear, and the second end of the second gear shaft is connected to the fourth gear; the first gear and the third gear mesh; the second gear and the fourth gear mesh.

[0051] The force synchronization methods based on the above keyboard synchronization buffer structure include the following:

[0052] 1. When a user applies pressure to the keyboard, this pressure is first applied to the keyboard inner tube 8, and then transmitted to the drive shaft through the connector 7 set on the drive shaft.

[0053] Second: When the drive shaft receives pressure from the connector 7, it will be displaced in the radial direction. Since the spring retainer 501 is fixedly connected to the end of the drive shaft, the displacement of the drive shaft will directly drive the spring retainer 501 to move downward, thereby compressing the spring 504, causing the spring 504 to deform and store energy.

[0054] Third: When the drive shaft undergoes radial displacement, since the first hole of the cantilever 605 is fitted onto the end of the drive shaft, the displacement of the drive shaft will cause the cantilever 605 to rotate.

[0055] Fourth: When the cantilever 605 rotates, since the second hole of the cantilever 605 is fitted onto the end of the gear shaft 603, the rotational motion of the cantilever 605 will be converted into the rotational motion of the gear shaft 603.

[0056] 5. When the gear shaft 603 rotates, the gears 604 fixed at both ends of the gear shaft 603 also rotate. Since the two gears 604 on the same side mesh with each other, the rotation of one gear 604 will drive the other gear 604 meshing with it to rotate, thereby transmitting the motion to the entire linkage assembly 6. This transmission mechanism ensures that all drive shafts can move in a coordinated manner, thereby achieving synchronous compression of all springs 504 and providing a uniform and consistent cushioning effect for the keyboard.

[0057] Through the aforementioned force synchronization method, when the keyboard is subjected to external force, the pressure is evenly distributed to each buffer component 5, ensuring the keyboard remains stable during use and preventing uneven force distribution in certain areas. Simultaneously, the synchronized compression and release of the spring 504 provides users with consistent tactile feedback, improving keyboard comfort and operational precision.

[0058] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A keyboard synchronization buffer structure comprising a keyboard base, characterized in that Also included are: a mechanism box shell fixed to the keyboard base; a first drive shaft and a second drive shaft, which are horizontally arranged D-head optical axes, the first drive shaft being horizontally arranged at the front end of the keyboard base, and the second drive shaft being horizontally arranged at the rear end of the keyboard base, both being parallel; four sets of buffer assemblies, each set of buffer assembly including a spring fixing piece, a guide shaft, a spring sleeve, and a spring, the spring fixing piece being fixedly connected to the end of the drive shaft, the upper end of the guide shaft being movably connected to the spring fixing piece, and the lower end being fixedly arranged in the keyboard base, the spring sleeve being arranged outside the guide shaft, and the spring being arranged outside the guide shaft, with the upper end abutting against the spring sleeve and the lower end abutting against the keyboard base; a linkage assembly, including: two connecting rods, a first connecting rod connecting the first end of the first drive shaft and the second drive shaft, and a second connecting rod connecting the second end of the first drive shaft and the second drive shaft; two gear shafts, which are horizontally arranged in the middle of the keyboard base and parallel to the drive shafts; four gears, which are fixed to the two ends of the gear shafts; four cantilevers, each of which is provided with a first hole and a second hole, the first hole being arranged around the end of the drive shaft, and the second hole being arranged around the end of the gear shaft, and the gears on the same side being meshed with each other; a plurality of connecting pieces arranged on the drive shafts for connecting the keyboard inner container.

2. The keyboard synchronization buffer structure of claim 1, wherein: The spring fixing piece is horizontally provided with a through slot, and the through slot is provided with a connecting positioning groove matched with the cross section of the drive shaft, and the end of the drive shaft is fixed in the connecting positioning groove.

3. The keyboard synchronization buffer structure of claim 1, wherein: The spring fixing piece is vertically provided with a through hole, and the guide shaft is vertically inserted into the through hole of the spring fixing piece to form a sliding connection.

4. The keyboard synchronization buffer structure of claim 1, wherein: The two connecting rods and the first drive shaft and the second drive shaft form a rectangular rigid frame.

5. The keyboard synchronization buffer structure of claim 1, wherein: The gear shafts are connected to the mechanism box shell through bearings.

6. The keyboard synchronization buffer structure of claim 1, wherein: The shapes of the first hole and the second hole on the cantilever are matched with the cross-sectional shapes of the drive shaft and the gear shaft, respectively.

7. The keyboard synchronization buffer structure of claim 1, wherein: The middle of the keyboard base is provided with a groove for arranging the gear shafts.

8. The keyboard synchronization buffer structure of claim 1, wherein: The connecting pieces are made of silica gel material.

9. A keyboard comprising a keyboard top cover, a keyboard base, and a keyboard inner liner, characterized in that: The keyboard base is provided with the keyboard synchronous buffer structure according to any one of claims 1 to 8, and the keyboard inner container is supported on the drive shaft through the connecting pieces.

10. A force synchronization method based on the keyboard synchronization buffer structure of claim 1, characterized in that The process includes: The pressure on the keyboard inner container is transmitted to the drive shaft through the connecting pieces; The drive shaft generates radial displacement after being pressed, and drives the spring fixing piece fixedly connected thereto to move downward, compressing the spring; At the same time, the radial displacement of the drive shaft drives the cantilever to rotate; The rotation of the cantilever drives the gear shaft to rotate; The meshed gears synchronously transmit the rotary motion to the entire linkage assembly, forcing all the drive shafts to move coordinately, thereby realizing the synchronous compression of all the springs.

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