A pull rod assembly with shockproof function
By introducing a shock-absorbing sleeve structure into the automotive steering tie rod assembly, the resonance problem of the tie rod assembly under high-frequency vibration and low-frequency energy is solved by using the outer silicone ring layer to absorb high-frequency vibration and the inner polyurethane layer to dissipate low-frequency energy, thus extending its service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUHUAN LETENG MACHINERY MFG CO LTD
- Filing Date
- 2025-07-01
- Publication Date
- 2026-07-14
AI Technical Summary
Existing automotive steering tie rod assemblies are susceptible to high-frequency vibrations and low-frequency energy during use, causing vibrations to be transmitted to the steering gear, resulting in resonance and a short service life.
The structure employs a shock-absorbing sleeve, consisting of an outer silicone ring and an inner polyurethane layer. The outer silicone ring absorbs high-frequency vibrations, while the inner polyurethane layer dissipates low-frequency energy through microporous deformation, blocking the vibration transmission path and preventing resonance amplification.
It effectively absorbs high-frequency vibrations, dissipates low-frequency energy, blocks vibration transmission, extends the service life of the tie rod assembly, avoids resonance amplification, and improves operational stability.
Smart Images
Figure CN224491208U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of automotive parts technology, and specifically relates to a tie rod assembly with shock absorption function. Background Technology
[0002] Automotive steering tie rods are used to connect the steering knuckles and steering gears of the front wheels of a car, allowing the front wheels to swing from one side to the other when the steering wheel is turned. For example, Chinese patent literature discloses an automotive steering tie rod assembly [Application No.: 202020030594.1; Authorization Announcement No.: CN211196349U], which includes an inner tie rod housing and an inner tie rod body. The inner cavity of the ball joint seat is spherical, and the spherical inner cavity of the ball joint seat is rotatably connected to the ball head of the ball pin in the inner tie rod body. The upper end of the spherical inner cavity of the ball joint seat is riveted inward to form a constricted portion to prevent the ball head of the ball pin from disengaging from the spherical inner cavity of the ball joint seat. An assembly structure is provided between the ball head of the ball pin and the ball joint seat to provide a reaction force for the ball pin to rotate on the ball joint seat when it rotates on the ball joint seat.
[0003] In the aforementioned automotive steering tie rod assembly, the ball joint pin on the ball joint seat makes steering reset easier, can reset itself, has a stable structure, and a long service life. However, it does not have a shock absorption function. During use, the tie rod assembly is easily affected by high-frequency vibration and low-frequency energy, causing the vibration to be transmitted to the steering gear, resulting in an amplified resonance effect. Summary of the Invention
[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a tie rod assembly with shock absorption function.
[0005] The objective of this utility model can be achieved through the following technical solution: a pull rod assembly with shock absorption function, including a pull rod seat body, an arc ball cup embedded in the inner wall of the pull rod seat body, a pull rod pin provided in the inner wall of the arc ball cup, the right side of the pull rod pin penetrating the pull rod seat body, an adjusting screw tube threaded on the right side of the pull rod pin, a pull rod pin also threaded on the right side of the inner wall of the adjusting screw tube, a flat nut threaded on the outside of both pull rod pins, and a shock-absorbing sleeve fitted on the left side of the pull rod pin.
[0006] This tie rod assembly with anti-vibration function has the advantage of vibration reduction. It uses an outer silicone ring to absorb high-frequency vibrations and an inner polyurethane layer to dissipate low-frequency energy through microporous deformation, blocking the transmission path of vibration to the steering gear, avoiding resonance amplification effect, and extending the service life of the tie rod assembly.
[0007] In the aforementioned shock-absorbing tie rod assembly, the two flat nuts and the tie rod pin are symmetrically arranged about the adjusting screw. The two flat nuts can be used to position the adjusting screw, preventing it from rotating arbitrarily.
[0008] In the aforementioned shock-absorbing tie rod assembly, the tie rod pin has several annular grooves on its outer surface, and the tie rod pin itself is stepped. The stepped tie rod pin, through changes in cross-sectional dimensions, makes the stress distribution of the rod body more uniform.
[0009] In the aforementioned tie rod assembly with anti-vibration function, the anti-vibration sleeve includes an outer silicone ring layer and an inner polyurethane layer. The inner wall of the outer silicone ring layer is fitted over the outside of the tie rod pin, and the outer wall of the outer silicone ring layer is connected to the inner wall of the inner polyurethane layer. The outer silicone ring layer absorbs high-frequency vibrations, while the inner polyurethane layer dissipates low-frequency energy through microporous deformation, thus blocking the transmission path of vibration to the steering gear.
[0010] In the aforementioned shock-absorbing tie rod assembly, the threads on the left and right sides of the inner wall of the adjusting screw tube are rotated in opposite directions. By adjusting the screw tube, the length of the tie rod assembly can be effectively changed.
[0011] Compared with existing technologies, this tie rod assembly with anti-vibration function has the advantage of anti-vibration through the use of anti-vibration sleeves. The outer silicone ring layer absorbs high-frequency vibrations, while the inner polyurethane layer dissipates low-frequency energy through microporous deformation, blocking the transmission path of vibration to the steering gear, avoiding resonance amplification effect, and extending the service life of the tie rod assembly. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model.
[0013] Figure 2 This is a left view of the main structure of the pull rod seat of this utility model.
[0014] Figure 3 This is a side sectional view of the shockproof sleeve structure of this utility model.
[0015] In the diagram: 1. Tie rod pin; 2. Ball cup; 3. Tie rod seat body; 4. Flat nut; 5. Anti-vibration sleeve; 51. Outer silicone ring layer; 52. Inner polyurethane layer; 6. Adjusting screw tube. Detailed Implementation
[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0017] like Figure 1 , Figure 2 and Figure 3As shown, this shock-absorbing tie rod assembly includes a tie rod seat body 3. An arc ball cup 2 is embedded in the inner wall of the tie rod seat body 3. A tie rod pin 1 is provided on the inner wall of the arc ball cup 2. The right side of the tie rod pin 1 passes through the tie rod seat body 3. An adjusting screw tube 6 is threaded on the right side of the outside of the tie rod pin 1. The right side of the inner wall of the adjusting screw tube 6 is also threaded with a tie rod pin 1. A flat nut 4 is threaded on the outside of both tie rod pins 1. A shock-absorbing sleeve 5 is sleeved on the left side of the outside of the tie rod pin 1.
[0018] To elaborate further, the two flat nuts 4 and the tie rod pin 1 are symmetrically arranged about the adjusting screw tube 6. The tie rod pin 1 has several annular grooves on its outer surface, and the tie rod pin 1 is stepped in shape.
[0019] The shock-absorbing sleeve 5 includes an outer silicone ring layer 51 and an inner polyurethane layer 52. The inner wall of the outer silicone ring layer 51 is fitted over the outside of the pull rod pin 1, and the outer wall of the outer silicone ring layer 51 is connected to the inner wall of the inner polyurethane layer 52. The threads on the left and right sides of the inner wall of the adjusting screw tube 6 are rotated in opposite directions.
[0020] In use, the outer silicone ring 51 absorbs high-frequency vibrations, while the inner polyurethane layer 52 dissipates low-frequency energy through microporous deformation, blocking the transmission path of vibration to the steering gear, avoiding resonance amplification effects, and extending the service life of the tie rod assembly. When the length of the tie rod assembly needs to be extended, first rotate the two flat nuts 4 away from the adjusting screw tube 6, then reverse the adjusting screw tube 6 to move the two tie rod pins 1 away from each other, thereby changing the length of the tie rod assembly. Once the desired length is reached, stop rotating the adjusting screw tube 6 and rotate the two flat nuts 4 back to their original positions. The two flat nuts 4 are used to position the adjusting screw tube 6, preventing arbitrary rotation of the adjusting screw tube 6, and further adjusting the accuracy of the adjusting screw tube 6 to ±0.5mm.
[0021] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.
Claims
1. A tie rod assembly with shock absorption function, comprising a tie rod seat body (3), characterized in that: The inner wall of the main body (3) of the pull rod seat is inlaid with an arc ball cup (2), and the inner wall of the arc ball cup (2) is provided with a pull rod pin (1). The right side of the pull rod pin (1) passes through the main body (3) of the pull rod seat. The right side of the pull rod pin (1) is threaded with an adjusting screw tube (6). The right side of the inner wall of the adjusting screw tube (6) is also threaded with a pull rod pin (1). The outer sides of both pull rod pins (1) are threaded with flat nuts (4). The left side of the pull rod pin (1) is fitted with a shockproof sleeve (5).
2. The tie rod assembly with shock absorption function according to claim 1, characterized in that: The two flat nuts (4) and the tie rod pin (1) are symmetrically arranged about the adjusting screw (6).
3. A tie rod assembly with shock absorption function according to claim 1, characterized in that: The pull rod pin (1) has several annular grooves on its outside, and the pull rod pin (1) is stepped in shape.
4. A tie rod assembly with shock absorption function according to claim 1, characterized in that: The shockproof sleeve (5) includes an outer silicone ring layer (51) and an inner polyurethane layer (52). The inner wall of the outer silicone ring layer (51) is sleeved on the outside of the pull rod pin (1), and the outer wall of the outer silicone ring layer (51) is connected to the inner wall of the inner polyurethane layer (52).
5. A tie rod assembly with shock absorption function according to claim 1, characterized in that: The threads on the left and right sides of the inner wall of the adjusting screw tube (6) are rotated in opposite directions.