Steering gear assembly and vehicle
By designing a steering assembly including a housing, transmission, buffer assembly and tie rod assembly, the problems of rubber fracturing and reduced life in the prior art are solved, and longer service life and higher reliability are achieved , effectively buffer energy absorption and reduce shock noise.
Patent Information
- Application Number
- CN202421180085.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-27
AI Technical Summary
The end buffer mechanism in the existing vehicle steering system has no hard limit, resulting in rubber fracturing, reduced life, loss of buffering and energy absorption and reducing impact noise.
A steering assembly is designed, including a housing, a transmission, a buffer assembly and a tie rod assembly. The buffer assembly is located between the transmission member and the housing, and the pull rod assembly is at the end of the transmission member, and contacts the buffer surface of the buffer assembly to compress the buffer assembly, thereby limiting the maximum distance of the transmission movement.
It extends the service life of the buffer assembly, improves reliability, effectively buffers energy absorption, and reduces impact noise.
Smart Images
Figure CN222432398U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of vehicles, and in particular to a steering gear assembly and a vehicle. Background Art
[0002] In the related art, in the steering system of a vehicle, the end buffer mechanism is composed of metal and rubber. The function of the end buffer mechanism is to limit the maximum distance that the rack can move in the steering gear, absorb the impact of the ball head, and protect the internal components of the steering system. However, the existing end buffer mechanism has no hard limit. The inner ball head stops moving only after the impact force of the inner ball head compresses the rubber to the limit, which can easily cause rubber fracturing, reduce its service life, and lose the function of buffering energy absorption and reducing impact noise. Utility Model Content
[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a steering gear assembly, the buffer component of which has a long service life and high reliability.
[0004] The present application also provides a vehicle having the steering gear assembly.
[0005] The steering gear assembly according to the embodiment of the present application includes: a shell, in which a transmission member is movably arranged; a buffer assembly, which is located between the transmission member and the shell, and has a buffer surface formed on one side of the buffer assembly in the axial direction, and the buffer assembly abuts against the shell on the other side in the axial direction; a tie rod assembly, which is arranged at the end of the transmission member, and is suitable for abutting against the buffer surface to compress the buffer assembly when moving axially.
[0006] According to the steering gear assembly of the embodiment of the present application, the steering gear assembly has a buffer assembly, a transmission member is arranged in a shell, the transmission member moves axially in the shell, the tie rod assembly can be arranged at the axial end of the transmission member, the buffer assembly is arranged between the shell and the tie rod assembly and abuts with the shell, and a buffer surface is formed on the buffer assembly. When the transmission member moves axially, the tie rod assembly can abut with the buffer surface and compress the buffer assembly, thereby limiting the movement of the tie rod assembly to limit the maximum distance of movement of the transmission member in the shell. Compared with the prior art, the buffer assembly has a longer service life and higher reliability, and the buffer assembly can effectively buffer energy absorption and reduce impact noise.
[0007] In some embodiments of the present application, a first boss is formed on the inner wall of the shell, and the buffer assembly abuts against the first boss on the other side in the axial direction.
[0008] In some embodiments of the present application, the buffer assembly includes: a first buffer component, which is sleeved on the outer periphery of the transmission component and abuts against the first boss; a second buffer component, which is sleeved on the outer periphery of the transmission component, the second buffer component is located on the side of the first buffer component away from the first boss and is spaced apart from the first buffer component, and a buffer surface is formed on the side of the second buffer component away from the first buffer component; wherein the pull rod assembly is suitable for abutting against the buffer surface to drive the second buffer component to move toward the first buffer component.
[0009] In some embodiments of the present application, the buffer assembly includes: an elastic member, wherein the elastic member is located between the first buffer member and the second buffer member, one end of the elastic member abuts against the first buffer member, and the other end of the elastic member abuts against the second buffer member; the second buffer member is suitable for compressing the elastic member when moving toward the first buffer member.
[0010] In some embodiments of the present application, a protrusion extending toward the first buffer member is formed on a side of the second buffer member facing the first buffer member, and the elastic member is sleeved on the outer periphery of the protrusion.
[0011] In some embodiments of the present application, a first support portion is formed on the outer peripheral wall of the first buffer member and extends toward the inner wall of the shell, and the first support portion is suitable for abutting against the inner wall of the shell when the first buffer member moves radially; a second support portion is formed on the outer peripheral wall of the second buffer member and extends toward the inner wall of the shell, and the second support portion is suitable for abutting against the inner wall of the shell when the second buffer member moves radially.
[0012] In some embodiments of the present application, a second boss is formed on the inner wall of the shell, and one end of the second buffer member in the axial direction abuts against the second boss.
[0013] In some embodiments of the present application, an outer peripheral wall of the second support portion is further formed with an extension portion extending toward the inner wall of the shell, and one end of the extension portion in the axial direction abuts against the second boss.
[0014] In some embodiments of the present application, the thickness of the first buffer member in the axial direction and the thickness of the second buffer member in the axial direction respectively decrease in a direction extending toward the shell.
[0015] The following is a brief description of a vehicle according to an embodiment of the present application.
[0016] According to the vehicle of the embodiment of the present application, the steering gear assembly of the above-mentioned embodiment is provided. Since the vehicle of the embodiment of the present application is provided with the steering gear assembly of the above-mentioned embodiment, when the transmission member of the steering gear assembly moves axially, the pull rod assembly can abut against the buffer surface and compress the buffer assembly, thereby limiting the movement of the pull rod assembly to limit the maximum distance of movement of the transmission member in the shell. Compared with the prior art, the buffer assembly has a longer service life and higher reliability, and the buffer assembly can effectively buffer energy and reduce impact noise.
[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0019] Figure 1 is a structural schematic diagram of a steering gear assembly according to an embodiment of the present application;
[0020] Figure 2 yes Figure 1 Exploded diagram of the buffer assembly;
[0021] Figure 3 yes Figure 1 The schematic diagram of the structure of the buffer component;
[0022] Figure 4 It is a schematic diagram of the structure of the steering gear assembly according to an embodiment of the present application when the buffer component is compressed.
[0023] Reference numerals:
[0024] 10. Steering gear assembly;
[0025] 11. housing; 111. transmission member; 112. first boss; 113. second boss;
[0026] 12. Buffer assembly; 121. First buffer member; 1211. First support portion;
[0027] 122, second buffer member; 1221, buffer surface; 1222, raised portion;
[0028] 1223. Second supporting portion; 1224. Extending portion; 123. Elastic member; 13. Pull rod assembly. DETAILED DESCRIPTION
[0029] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.
[0030] Reference below Figure 1-Figure 4 A steering gear assembly 10 according to an embodiment of the present application is described, and the steering gear assembly 10 includes a shell 11, a buffer assembly 12 and a pull rod assembly 13. A transmission member 111 is movably arranged in the shell 11, and the buffer assembly 12 is located between the transmission member 111 and the shell 11. The buffer assembly 12 has a buffer surface 1221 formed on one side in the axial direction, and the buffer assembly 12 abuts against the shell 11 on the other side in the axial direction. The pull rod assembly 13 is arranged at the end of the transmission member 111, and the pull rod assembly 13 is suitable for abutting against the buffer surface 1221 to compress the buffer assembly 12 when moving axially.
[0031] At present, in the steering system of the vehicle, the end buffer mechanism is composed of metal and rubber. The function of the end buffer mechanism is to limit the maximum distance that the rack can move in the steering gear, absorb the impact of the ball head, and protect the internal components of the steering system. However, the existing end buffer mechanism has no hard limit. The inner ball head stops moving only after the impact force of the inner ball head compresses the rubber to the limit, which can easily cause rubber fracturing, reduce its service life, and lose the function of buffering energy absorption and reducing impact noise.
[0032] like Figure 1 and Figure 4 As shown, specifically, the steering gear assembly 10 includes a housing 11 and a tie rod assembly 13. A transmission member 111 may be provided inside the housing 11. The transmission member 111 can move within the housing 11, wherein the transmission member 111 may be constructed as a rack, the tie rod assembly 13 may be provided at the end of the transmission member 111, the tie member assembly may include an inner ball head tie rod and a ball pin seat, the ball pin seat is connected to the end of the transmission member 111, the ball head tie rod is provided on the ball pin seat, and in a specific embodiment, the tie rod assembly 13 may be respectively provided at both ends of the transmission member 111 in the axial direction.
[0033] Furthermore, the steering gear assembly 10 also includes a buffer component 12, which can be located between the transmission member 111 and the housing 11. A buffer surface 1221 is formed on one side of the buffer component 12 in the axial direction, and the other side of the buffer component 12 in the axial direction abuts against the housing 11. When the transmission member 111 moves axially, the transmission member 111 drives the pull rod component 13 to move synchronously. One end of the pull rod component 13 abuts against the buffer surface 1221 and compresses the buffer component 12, thereby limiting the maximum distance that the transmission member 111 can move in the housing 11. The other side of the buffer component 12 abuts against the inner wall of the housing 11, thereby ensuring that the buffer component 12 can effectively buffer and absorb energy and reduce impact noise. Compared with the rubber in the prior art, the buffer component 12 has a longer service life and higher reliability.
[0034] In short, the steering gear assembly 10 of the embodiment of the present application has a buffer assembly 12, a transmission member 111 is arranged in the housing 11, the transmission member 111 moves axially in the housing 11, the tie rod assembly 13 can be arranged at the axial end of the transmission member 111, the buffer assembly 12 is arranged between the housing 11 and the tie rod assembly 13 and abuts against the housing 11, and a buffer surface 1221 is formed on the buffer assembly 12. When the transmission member 111 moves axially, the tie rod assembly 13 can abut against the buffer surface 1221 and compress the buffer assembly 12, thereby limiting the movement of the tie rod assembly 13 to limit the maximum distance of the transmission member 111 moving in the housing 11. Compared with the prior art, the buffer assembly 12 has a longer service life and higher reliability. The buffer assembly 12 can effectively buffer energy absorption and reduce impact noise.
[0035] like Figure 1 and Figure 4 As shown, in some embodiments of the present application, a first boss 112 is formed on the inner wall of the shell 11, and the buffer assembly 12 abuts against the first boss 112 on the other side in the axial direction. When the transmission member 111 moves axially, the transmission member 111 drives the pull rod assembly 13 to move synchronously, and one end of the pull rod assembly 13 toward the transmission member 111 abuts against the buffer surface 1221. At the same time, the pull rod assembly 13 compresses the buffer assembly 12. Since the buffer assembly 12 abuts against the first boss 112 on the other side in the axial direction, the buffer assembly 12 will not move in the shell 11, thereby ensuring that the buffer assembly 12 can effectively buffer and absorb energy and reduce impact noise.
[0036] like Figure 2 and Figure 3As shown, in some embodiments of the present application, the buffer assembly 12 includes a first buffer member 121 and a second buffer member 122. The first buffer member 121 can be sleeved on the outer periphery of the transmission member 111, and the first buffer member 121 can abut against the first boss 112. The second buffer member 122 can be sleeved on the outer periphery of the transmission member 111, and the second buffer member 122 can be located on a side of the first buffer member 121 away from the first boss 112, and the second buffer member 122 can be spaced apart from the first buffer member 121. It is ensured that when the pull rod assembly 13 abuts against the buffer surface 1221, the second buffer 122 can move toward the first buffer 121. The second buffer 122 is formed with a buffer surface 1221 on the side away from the first buffer 121. The pull rod assembly 13 can abut against the buffer surface 1221 and drive the second buffer 122 to move toward the first buffer 121. The buffer assembly 12 also has an elastic member 123, which can be located between the first buffer 121 and the second buffer 122. One end of the elastic member 123 can abut against the first buffer member 121, and the other end of the elastic member 123 can abut against the second buffer member 122. When the pull rod assembly 13 abuts against the buffer surface 1221, the pull rod assembly 13 can drive the second buffer member 122 to move toward the first buffer member 121. When the second buffer member 122 moves toward the first buffer member 121, the elastic member 123 can be compressed, thereby realizing the compression of the buffer assembly 12. After compression, the elastic member 123 provides elastic force in the opposite direction, thereby absorbing the energy generated by the abutment of the pull rod assembly 13 with the contact surface, and under the influence of the elastic force, the continued movement of the pull rod assembly 13 can be limited, that is, the axial movement distance of the transmission member 111, to achieve the function of buffering energy absorption and limiting the maximum movement distance of the transmission member 111. Compared with the prior art, the elastic member 123 has a long service life. In a specific embodiment, the elastic member 123 can be constructed as an elastic element such as a spring or a disc spring. The stiffness of the elastic member 123 is adjusted to change the energy absorption effect to adapt to different vehicle models, thereby improving the driving feel.
[0037] like Figure 1 and Figure 4 As shown, in some embodiments of the present application, a protrusion 1222 is further formed on the side of the second buffer member 122 facing the first buffer member 121, and the protrusion 1222 can be extended toward the first buffer member 121, and the elastic member 123 can be sleeved on the outer periphery of the protrusion 1222, so as to limit the elastic member 123 and prevent the elastic member 123 from moving in the radial direction, while also ensuring that the elastic member 123 can abut against the first buffer member 121 and the second buffer member 122 respectively.
[0038] like Figure 2 and Figure 3As shown, in some embodiments of the present application, a first support portion 1211 is formed on the outer peripheral wall of the first buffer member 121, and the first support portion 1211 can extend toward the inner wall of the shell 11. The first support portion 1211 can abut against the inner wall of the shell 11 when the first buffer member 121 moves radially. It can be understood that when the transmission member 111 moves radially, the transmission member 111 can abut against the inner wall of the first buffer member 121 and drive the first buffer member 121 to move toward the shell 11. The first support portion 1211 can abut against the inner wall of the shell 11 when the first buffer member 121 moves, thereby playing a supporting role, preventing the transmission member 111 from contacting the inner wall of the shell 11, and further protecting the entire steering system and improving its service life.
[0039] Similarly, a second support portion 1223 is formed on the outer peripheral wall of the second buffer member 122, and the second support portion 1223 can extend toward the inner wall of the shell 11. The second support portion 1223 can abut against the inner wall of the shell 11 when the second buffer member 122 moves radially. When the transmission member 111 moves radially, the transmission member 111 can also abut against the inner wall of the second buffer member 122 and drive the second buffer member 122 to move toward the shell 11. The second support portion 1223 can abut against the inner wall of the shell 11 when the second buffer member 122 moves, thereby playing a supporting role. By setting the first buffer member 121 and the second buffer member 122, the auxiliary support effect of the buffer assembly 12 can be further improved.
[0040] like Figure 1 and Figure 4 As shown, in some embodiments of the present application, the inner wall of the housing 11 is formed with a second boss 113, and one end of the second buffer 122 in the axial direction can abut against the second boss 113, thereby realizing the limit of the buffer assembly 12. When the pull rod assembly 13 is not abutted against the buffer surface 1221, the second buffer 122 can abut against the second boss 113, thereby limiting the axial movement of the buffer assembly 12. Further, the outer peripheral wall of the second support portion 1223 is also formed with an extension portion 1224 extending toward the inner wall of the housing 11, and one end of the extension portion 1224 in the axial direction abuts against the second boss 113, and one end of the extension portion 1224 in the radial direction can abut against the inner wall of the housing 11. The extension portion 1224 can increase the contact area between the second boss 113 and the second buffer 122, thereby effectively realizing the axial limit of the buffer assembly 12.
[0041] In some embodiments of the present application, in the direction extending toward the shell 11, the axial thickness of the first buffer member 121 and the axial thickness of the second buffer member 122 are respectively reduced. It can be understood that the first buffer member 121 and the second buffer member 122 can be constructed as a truncated cone, thereby reducing the space occupied by the first buffer member 121 and the second buffer member 122, facilitating the installation and arrangement of the buffer assembly 12 to the shell 11, and reducing the difficulty of the overall vehicle layout.
[0042] The following is a brief description of a vehicle according to an embodiment of the present application.
[0043] According to the embodiment of the present application, the vehicle is provided with the steering gear assembly 10 of the above-mentioned embodiment. Since the vehicle of the embodiment of the present application is provided with the steering gear assembly 10 of the above-mentioned embodiment, when the transmission member 111 of the steering gear assembly 10 moves axially, the tie rod assembly 13 can abut against the buffer surface 1221 and compress the buffer assembly 12, thereby limiting the movement of the tie rod assembly 13 to limit the maximum distance of movement of the transmission member 111 in the housing 11. Compared with the prior art, the buffer assembly 12 has a longer service life and higher reliability, and the buffer assembly 12 can effectively buffer energy absorption and reduce impact noise.
[0044] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0045] In the description of this application, "first feature" or "second feature" may include one or more of the features.
[0046] In the description of the present application, “plurality” means two or more.
[0047] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.
[0048] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.
[0049] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.
[0050] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.
Claims
1. A steering gear assembly, characterized in that: include: A housing (11), wherein a transmission member (111) is movably disposed in the housing (11), and a first boss (112) is formed on an inner wall of the housing (11); a buffer component (12), the buffer component (12) being located between the transmission member (111) and the housing (11), the buffer component (12) being provided with a buffer surface (1221) on one side in the axial direction, and the buffer component (12) being in abutment with the first boss (112) on the other side in the axial direction; A pull rod assembly (13), the pull rod assembly (13) being arranged at an end of the transmission member (111), the pull rod assembly (13) being adapted to abut against the buffer surface (1221) to compress the buffer assembly (12) when moving axially; The buffer component (12) comprises: A first buffer member (121), the first buffer member (121) being sleeved on the outer periphery of the transmission member (111) and abutting against the first boss (112); a second buffer member (122), the second buffer member (122) being sleeved on the outer periphery of the transmission member (111), the second buffer member (122) being located on a side of the first buffer member (121) away from the first boss (112) and being spaced apart from the first buffer member (121), and a buffer surface (1221) being formed on a side of the second buffer member (122) away from the first buffer member (121); wherein The pull rod assembly (13) is suitable for abutting against the buffer surface (1221) to drive the second buffer component (122) to move toward the first buffer component (121).
2. The steering gear assembly according to claim 1, characterized in that: The buffer component (12) comprises: an elastic member (123), the elastic member (123) being located between the first buffer member (121) and the second buffer member (122), one end of the elastic member (123) being in contact with the first buffer member (121), and the other end of the elastic member (123) being in contact with the second buffer member (122); The second buffer member (122) is adapted to compress the elastic member (123) when moving toward the first buffer member (121).
3. The steering gear assembly according to claim 2, characterized in that: A protrusion (1222) extending toward the first buffer component (121) is formed on one side of the second buffer component (122) facing the first buffer component (121), and the elastic component (123) is sleeved on the outer periphery of the protrusion (1222).
4. The steering gear assembly according to claim 3, characterized in that: The outer peripheral wall of the first buffer member (121) is formed with a first support portion (1211) extending toward the inner wall of the shell (11), and the first support portion (1211) is suitable for abutting against the inner wall of the shell (11) when the first buffer member (121) moves in the radial direction; The outer peripheral wall of the second buffer member (122) is formed with a second support portion (1223) extending toward the inner wall of the shell (11), and the second support portion (1223) is suitable for abutting against the inner wall of the shell (11) when the second buffer member (122) moves radially.
5. The steering gear assembly according to claim 4, characterized in that: A second boss (113) is formed on the inner wall of the housing (11), and one end of the second buffer member (122) in the axial direction abuts against the second boss (113).
6. The steering gear assembly according to claim 5, characterized in that: An extension portion (1224) extending toward the inner wall of the housing (11) is also formed on the outer peripheral wall of the second support portion (1223), and one end of the extension portion (1224) in the axial direction abuts against the second boss (113).
7. The steering gear assembly according to claim 4, characterized in that: The thickness of the first buffer member (121) in the axial direction and the thickness of the second buffer member (122) in the axial direction respectively decrease in a direction extending toward the housing (11).
8. A vehicle, characterized in that: Comprising a steering gear assembly as described in any one of claims 1-7.