Vibration damper structure capable of rotating linearly

Abstract

The utility model provides a linear rotation shock absorber structure, which comprises a cylinder body and a motion conversion module, the cylinder body is filled with hydraulic oil, the motion conversion module comprises a core shaft inserted into the cylinder body, a rotating block in threaded connection with the outer side of the core shaft and a rotating arm arranged on the outer side of the rotating block, the rotating block is connected with external rotation torque through the rotating arm, and the rotating block is connected with the cylinder body. The rotating arm is arranged in the barrel and can convert rotating motion of the rotating arm into axial linear motion of the core shaft, a piston is further arranged on the outer side of the core shaft, the piston is located in the barrel and divides the barrel into two cavities, and an anti-deflection mechanism is arranged on the piston and can limit the core shaft to move up and down only in the axial direction of the barrel. The linear motion of the shock absorber can be converted into rotary motion through the motion conversion module, the installation space of the shock absorber is greatly reduced, the use scene of the shock absorber is widened, the installation requirements under the conditions of small stroke and large torque are met, and the application range of the shock absorber is greatly widened.

Description

Technical Field

[0001] This utility model relates to the field of vibration damper technology, specifically to a linear-to-rotary vibration damper structure. Background Technology

[0002] Traditional telescopic shock absorbers are primarily designed for linear vibrations, generating damping through the reciprocating motion of a piston rod compressing hydraulic fluid. However, in rotating machinery (such as vehicle steering systems and industrial rotating equipment), rotational vibration energy is difficult for traditional shock absorbers to absorb directly, requiring additional conversion mechanisms, resulting in complex structures and significant energy losses. Existing technologies employ gear meshing, worm gear, or linkage conversion structures. The clearance and durability of gears and worm gears are difficult to guarantee, while linkage conversion structures suffer from large size, long installation space, excessive stroke, and insufficient torque. This makes it impossible to install linear shock absorbers on some low-chassis vehicles or in certain confined spaces. Utility Model Content

[0003] In view of this, the present invention provides a linear-to-rotary vibration damper structure, which can transform the linear motion of ordinary vibration dampers into rotational motion by designing a linear-to-rotary vibration damper structure, so as to adapt to the installation requirements of certain application scenarios with insufficient installation space, small stroke, and large torque.

[0004] To solve the above-mentioned technical problems, this utility model provides a linear-to-rotary shock absorber structure, including a cylinder and a motion conversion module. The cylinder is filled with hydraulic oil. The motion conversion module includes a spindle inserted into the cylinder, a rotating block threaded to the outside of the spindle, and a rotating arm disposed on the outside of the rotating block. The rotating block is connected to an external rotational torque through the rotating arm, which can convert the rotational motion of the rotating arm into the axial linear motion of the spindle. A piston is also disposed on the outside of the spindle. The piston is located in the cylinder and divides the cylinder into two chambers. An anti-deflection mechanism is disposed on the piston, which can restrict the spindle to move up and down only along the axial direction of the cylinder. Through the anti-deflection mechanism, under the driving action of external rotational force, the rotating arm can drive the rotating block to rotate while preventing the spindle from rotating. At the same time, with the limiting effect of the anti-deflection mechanism, the rotation of the rotating arm can drive the rotating block to rotate while driving the spindle threaded to it to move up and down axially, thus realizing the conversion of the rotational motion of the swing arm into the axial linear motion of the spindle.

[0005] The cylinder body is also equipped with a sealing structure, which includes a base at the lower end of the cylinder body, an oil seal cover one on the base of the cylinder body, a top cover at the upper end of the cylinder body, and an oil seal cover two on the top cover of the cylinder body. This utility model can achieve the fixed installation and limiting of the upper and lower ends of the cylinder body through the base and the top cover, and can achieve the sealing of the top cover through the oil seal cover one and the sealing of the base through the oil seal cover two, which greatly improves the sealing performance of the shock absorber.

[0006] The anti-deflection mechanism includes a guide hole on the piston, a guide shaft inserted into the guide hole, the lower end of the guide shaft connected to the base, and the upper end connected to the top cover. This utility model can limit the rotation of the piston and the spindle through the cooperation of the guide shaft and the guide hole, thus preventing them from rotating. In addition, in conjunction with the motion conversion module, the piston can move up and down along the axis of the spindle, making the operation more convenient.

[0007] The piston has at least two through holes parallel to its axis, and a reversing valve is installed in the through holes. The reversing valve is used to exchange the hydraulic oil in the two storage chambers. This utility model can realize the exchange of hydraulic oil in the chambers of the upper and lower cylinders of the piston through the reversing valve. By converting the rotational motion into the up and down motion of the spindle, the hydraulic oil in the upper and lower chambers of the cylinder is exchanged through the check valve, changing the volume of the chambers, thereby generating damping and realizing the vibration reduction function of the shock absorber.

[0008] There are two through holes, and correspondingly two directional valves. The two directional valves are check valves, and the two check valves are installed in opposite positions.

[0009] The spindle has a trapezoidal external thread, and the rotating block has a trapezoidal internal thread that meshes with the trapezoidal external thread.

[0010] A sealing ring is provided on the outside of the piston. The sealing ring is made of high-temperature and high-pressure resistant rubber or polyurethane material.

[0011] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0012] 1. Reduced installation space and expanded applicability: This utility model can convert the rotational motion of the lever arm into the linear motion of the spindle through a motion conversion module, which greatly reduces the installation space of the vibration damper and expands the applicable scenarios of the vibration damper.

[0013] 2. Improve the stability of the spindle's up-and-down movement. This utility model can guide and limit the up-and-down movement of the spindle through an anti-deflection mechanism, so that during the rotation of the rotating arm, it can only move up and down axially and cannot rotate, which greatly improves the vibration reduction capability of the shock absorber.

[0014] 3. The hydraulic oil exchange is more convenient and intelligent. This utility model can achieve efficient and convenient automatic switching of hydraulic oil in the chambers at the upper and lower ends of the piston by installing the outlets of the two one-way valves in opposite states, which greatly improves the vibration damping effect and stability of the shock absorber and extends its service life. Attached Figure Description

[0015] Figure 1 This is a side view of the linear-to-rotational vibration damper structure of this utility model;

[0016] Figure 2 This utility model Figure 1 Sectional view at point AA;

[0017] Figure 3 This is a front view of the linear-to-rotational vibration damper structure of this utility model.

[0018] Figure 4 This utility model Figure 3 Sectional view at point BB.

[0019] Explanation of reference numerals in the attached drawings: 100, cylinder; 200, motion conversion module; 210, spindle; 211, trapezoidal external thread; 220, rotating block; 221, trapezoidal internal thread; 230, rotating arm; 240, piston; 241, sealing ring; 250, anti-deflection mechanism; 251, guide hole; 252, guide shaft; 300, sealing structure; 301, base; 302, oil seal gland one; 303, top cover; 304, oil seal gland two; 400, through hole; 500, reversing valve. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0021] like Figure 1-4 As shown: This embodiment provides a linear-to-rotary shock absorber structure, including a cylinder 100 and a motion conversion module 200. The cylinder 100 is filled with hydraulic oil, wherein, as... Figure 2As shown, the cylinder 100 includes an inner cylinder and an outer cylinder. The motion conversion module 200 includes a spindle 210 inserted into the cylinder 100, a rotating block 220 threadedly connected to the outside of the spindle 210, and a rotating arm 230 disposed on the outside of the rotating block 220. The spindle 210 has a trapezoidal external thread 211, and the rotating block 220 has a trapezoidal internal thread 221 that meshes with the trapezoidal external thread 211. The rotating block 220 is connected to an external rotational torque through the rotating arm 230, which can convert the rotational motion of the rotating arm 230 into the axial linear motion of the spindle 210. A piston 240 is also disposed on the outside of the spindle 210, and a sealing ring 241 is disposed on the outside of the piston 240. The sealing ring 241 is made of high-temperature and high-pressure resistant rubber or polyurethane material. The sealing ring 241 on the outside of the piston 240 can ensure the sealing performance between the outside of the piston 240 and the inner cylinder, and it has good recovery elasticity to achieve During its up-and-down movement, it ensures good contact and sealing with the inner wall of the inner cylinder, greatly improving the service life of the shock absorber. The piston 240 is located inside the cylinder 100 and divides the cylinder 100 into two chambers. The piston 240 is equipped with an anti-deflection mechanism 250. The spindle 210, piston 240 and anti-deflection mechanism 250 are all located inside the inner cylinder, which can restrict the spindle 210 to move up and down only along the axial direction of the cylinder 100. Through the anti-deflection mechanism 250, under the driving action of external rotational force, the rotating arm 230 can rotate while the rotating block 220 rotates, and the spindle 210 connected to it can be prevented from rotating. At the same time, with the limiting effect of the anti-deflection mechanism 250, the rotation of the rotating arm 230 can drive the rotating block 220 to rotate while driving the spindle 210, which is threaded to it, to move up and down axially, realizing the conversion of the rotational motion of the swing arm into the axial linear motion of the spindle 210. This invention can convert the linear motion of the shock absorber into rotational motion through the motion conversion module 200, which greatly reduces the installation space of the shock absorber, expands the application scenarios of the shock absorber, realizes the installation requirements under small stroke and high torque conditions, and greatly improves the applicability of the shock absorber.

[0022] According to one embodiment of the present invention, such as Figure 1 and Figure 2As shown, a sealing structure 300 is also provided on the cylinder 100. The sealing structure 300 includes a base 301 welded to the lower end of the cylinder 100. An oil seal cover 302 is provided on the base 301 of the cylinder 100. The oil seal cover 302 is used to seal the lower part of the cylinder 100. A top cover 303 is provided at the upper end of the cylinder 100. An oil seal cover 304 is provided on the top cover 303 of the cylinder 100. The oil seal cover 304 is used to seal the upper part of the cylinder 100. This utility model can achieve the fixed installation and limiting of the upper and lower ends of the cylinder 100 through the base 301 and the top cover 303. Moreover, the top cover 303 can be sealed by the oil seal cover 302, and the base 301 can be sealed by the oil seal cover 304, which greatly improves the sealing performance of the shock absorber.

[0023] According to another embodiment of the present invention, such as Figure 1 and Figure 4 As shown, the anti-deflection mechanism 250 includes a guide hole 251 opened on the piston 240, such as... Figure 4 As shown, there are two guide holes 251, and a guide shaft 252 is inserted into each guide hole 251. The lower end of the guide shaft 252 is connected to the base 301, and the upper end is connected to the top cover 303. This utility model can limit the rotation of the piston 240 and the spindle 210 through the cooperation of the guide shaft 252 and the guide hole 251, so as to prevent them from rotating. Then, in conjunction with the motion conversion module 200, the piston 240 carries the spindle 210 to move up and down along the axis of the spindle 210, making the operation more convenient.

[0024] According to another embodiment of the present invention, such as Figure 1 and Figure 2 As shown, the piston 240 has at least two through holes 400 parallel to its axial direction, and a reversing valve 500 is installed in the through hole 400. The reversing valve 500 is a pressure one-way control valve in the prior art. The reversing valve 500 is used to exchange the hydraulic oil in the two storage chambers. This utility model can realize the exchange of hydraulic oil in the chambers of the upper and lower sides of the cylinder 100 through the reversing valve 500. By converting the rotational motion into the up and down motion of the spindle 210, the hydraulic oil in the upper and lower chambers of the inner cavity of the cylinder 100 is exchanged through the one-way valve, changing the volume of the chamber, thereby generating damping and realizing the vibration reduction function of the shock absorber.

[0025] like Figure 2 There are two through holes 400 shown, and there are also two corresponding directional valves 500. The two directional valves 500 are one-way valves, and the two one-way valves are installed in opposite positions.

[0026] How to use this utility model:

[0027] First, it needs to be clarified that the shock absorber involved in this utility model is mainly used in various vehicles and other scenarios requiring vibration reduction, especially suitable for scenarios with limited installation space, low chassis, and the need for vibration reduction. This utility model takes the vibration reduction of a car during movement as an example to explain its usage in detail. When vibration reduction is required for a vehicle during movement, the vibration reduction principle of this shock absorber is as follows: Due to the inertia of the car body and power system during movement, the car will push the swing arm of the shock absorber to rotate. When the swing arm of the shock absorber rotates... During the process, the rotating block 220 will rotate together with it. In addition, the trapezoidal internal thread 221 on the rotating block 220 and the trapezoidal external thread 211 on the spindle 210 are threaded together. With the combined action of the guide shaft 252 guiding and limiting the piston 240, the rotation of the rotating block 220 will be converted into the spindle 210 pulling the piston 240 to move up and down. During this process, the hydraulic oil in the cylinder 100 will be exchanged in the upper and lower spaces of the inner cylinder cavity through the one-way valve on the piston 240, so as to achieve a good vibration reduction effect on the vehicle.

[0028] The following is a brief explanation of the vibration damping function achieved by the different installation methods of this shock absorber: There are two installation methods for the shock absorber. The first is horizontal installation of the swing arm. In this case, the shock absorber is mainly used to dampen vibrations in the vertical direction, mainly to dampen the bumps when the vehicle is traveling on bumpy roads. The second is vertical installation of the swing arm. In this case, the shock absorber is mainly used to dampen the hysteresis between the frame and chassis movement caused by inertia in the front-rear direction during vehicle acceleration, deceleration or braking, thereby achieving a good vibration damping effect. In summary, multiple shock absorbers are usually installed on a vehicle. The installation method needs to be adapted to the different vibration damping requirements of the vehicle. By changing the installation method, the corresponding vibration damping requirements can be achieved.

[0029] This invention can transform the linear motion of a conventional vibration damper into rotational motion through a linear-to-rotational vibration damper structure. It can adapt to various installation scenarios, especially those with insufficient installation space, small stroke, and large torque, to meet the vibration reduction requirements under various working conditions.

[0030] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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.

[0031] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A linear-to-rotational vibration damper structure, characterized in that: The device includes a cylinder (100) and a motion conversion module (200). The cylinder (100) is filled with hydraulic oil. The motion conversion module (200) includes a spindle (210) inserted into the cylinder (100), a rotating block (220) threaded to the outside of the spindle (210), and a rotating arm (230) disposed on the outside of the rotating block (220). The rotating block (220) is connected to an external rotational torque through the rotating arm (230) and can convert the rotational motion of the rotating arm (230) into the axial linear motion of the spindle (210). A piston (240) is also disposed on the outside of the spindle (210). The piston (240) is located inside the cylinder (100) and divides the cylinder (100) into two chambers. An anti-deflection mechanism (250) is disposed on the piston (240) to restrict the spindle (210) to move up and down only along the axial direction of the cylinder (100).

2. The linear-to-rotational vibration damper structure as described in claim 1, characterized in that: The cylinder (100) is also provided with a sealing structure (300), the sealing structure (300) includes a base (301) at the lower end of the cylinder (100), an oil seal cover (302) is provided on the base (301) of the cylinder (100), a top cover (303) is provided at the upper end of the cylinder (100), and an oil seal cover (304) is provided on the top cover (303) of the cylinder (100).

3. The linear-to-rotational vibration damper structure as described in claim 2, characterized in that: The anti-deflection mechanism (250) includes a guide hole (251) on the piston (240), and a guide shaft (252) is inserted in the guide hole (251). The lower end of the guide shaft (252) is connected to the base (301), and the upper end is connected to the top cover (303).

4. The linear-to-rotational vibration damper structure as described in claim 3, characterized in that: The piston (240) has at least two through holes (400) parallel to its axial direction, and a reversing valve (500) is provided in the through hole (400) for exchanging hydraulic oil in the two storage chambers.

5. The linear-to-rotational vibration damper structure as described in claim 4, characterized in that: There are two through holes (400), and correspondingly there are two directional valves (500). The two directional valves (500) are one-way valves, and the two one-way valves are installed in opposite positions.

6. The linear-to-rotational vibration damper structure as described in claim 5, characterized in that: The mandrel (210) is provided with a trapezoidal external thread (211), and the rotating block (220) is provided with a trapezoidal internal thread (221) that meshes with the trapezoidal external thread (211).

7. The linear-to-rotational vibration damper structure as described in claim 1, characterized in that: A sealing ring (241) is provided on the outer side of the piston (240).

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