Limiting device and vehicle with same
By designing a limiting device with buffer assembly and buffer members, the two buffering of the impact load is realized, and the problem of insufficient buffering capacity of the existing limiting device is solved, and durability and ride comfort are improved.
Patent Information
- Application Number
- CN202420535903.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-19
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-03-19
AI Technical Summary
When the existing limiting device is subjected to impact load, the buffering capacity is insufficient, resulting in the impact load being directly transmitted to the mounting bracket and frame, reducing the durability of the limiting device and the user's ride comfort.
A limiting device is designed, including a guide rod, a buffer assembly, a mounting frame and a buffer member. Through the buffer assembly, the mounting frame and the buffer member are driven to move in the axial direction of the guide rod to achieve two bufferings for the impact load.
It improves the buffering capacity of the limiting device, extends its service life, improves the user's ride comfort, and enhances the durability of the limiting device and associated components.
Smart Images
Figure CN222432259U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of limiting devices, in particular to a limiting device and a vehicle thereof. Background Art
[0002] In the related art, the limit block is directly installed on the limit block mounting bracket by bolts, and then the limit block mounting bracket is connected to the vehicle frame. When the vehicle is subjected to an impact load, due to the general buffering capacity of the rubber in the limit block, the impact load will be directly transmitted to the limit block mounting bracket, causing greater impact damage to the limit block mounting bracket and its associated structures such as the frame, thereby reducing the durability of the limit block and reducing the user's riding comfort. Utility Model Content
[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present invention is to provide a limit device that improves the buffering capacity of the limit device, thereby improving the riding comfort of the user while improving the durability of the limit device and thus extending the service life of the limit device.
[0004] Another object of the present invention is to provide a vehicle using the above-mentioned limiting device.
[0005] According to the limiting device of the first aspect embodiment of the present invention, it includes: a guide rod, one end of which is suitable for being connected to a vehicle frame; a buffer assembly, which is connected to the other end of the guide rod and is movable along the axial direction of the guide rod; a mounting frame, which is arranged at the end of the buffer assembly away from the guide rod; a first buffer member, which is arranged on the mounting frame; wherein, when the buffer assembly moves along the axial direction of the guide rod, it drives the mounting frame and the first buffer member to move along the axial direction of the guide rod.
[0006] According to the embodiment of the present invention, the limit device drives the mounting frame and the first buffer member to move axially along the guide rod via the buffer assembly, thereby achieving double buffering of the impact load. This improves the buffering capacity of the limit device, thereby enhancing the user's riding comfort while also improving the durability of the limit device and the components connected to the limit device, thereby extending the service life of the limit device and the components connected to the limit device. Furthermore, the applicability of the limit device is improved, namely, the buffer assembly can move axially along the guide rod to adapt the limit device to different buffer gaps.
[0007] According to some embodiments of the present invention, the buffer assembly includes a shell having a accommodating cavity; a limit member, the limit member is arranged in the accommodating cavity, and the limit member is connected to the other end of the guide rod; a second buffer member, the second buffer member is arranged in the accommodating cavity, and the second buffer member is located between the limit member and the bottom wall of the shell, and the second buffer member is suitable for abutting against a side surface of the limit member away from the guide rod.
[0008] According to some embodiments of the present invention, the accommodating cavity is filled with lubricating liquid, and at least one leakage hole is formed on the limiting member.
[0009] According to some embodiments of the present invention, the diameter of the leakage hole is D1, wherein D1 satisfies: 5mm≤D1≤10mm.
[0010] According to some embodiments of the present invention, a mounting hole is formed on the limiting member, and the buffer assembly also includes a locking member, which is located between the second buffer member and the limiting member, and the other end of the guide rod passes through the mounting hole and is connected to the locking member; wherein the cross-sectional area of the locking member is larger than the cross-sectional area of the mounting hole, and the cross-sectional area of the mounting hole is smaller than the cross-sectional area of the limiting member.
[0011] According to some embodiments of the present invention, the stiffness of the second buffer member is N, wherein N satisfies: N≥50N / m.
[0012] According to some embodiments of the present invention, the thickness of the shell is D2, and the thickness of the limiter is D3, wherein D2 and D3 respectively satisfy: D2 ≥ 3 mm, D3 ≥ 5 mm.
[0013] According to some embodiments of the present invention, the diameter of the guide rod is D4, and the length of the guide rod is L, wherein D4 and L respectively satisfy: D4 ≥ 6 mm, L ≤ 200 mm.
[0014] According to some embodiments of the present invention, the first buffer component is a rubber component, and the second buffer component is a spring component.
[0015] The vehicle according to the embodiment of the second aspect of the present utility model includes the limiting device according to the embodiment of the first aspect of the present utility model.
[0016] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0018] Figure 1 is a schematic diagram of a limiting device and a mounting bracket according to an embodiment of the present utility model;
[0019] Figure 2 is a cross-sectional view of a position limiting device according to an embodiment of the present utility model;
[0020] Figure 3 Schematic diagram of a limiting member of a limiting device according to an embodiment of the present utility model.
[0021] Reference numerals:
[0022] 100: limit device;
[0023] 1: Guide rod; 2: Buffer assembly; 21: Housing; 211: Accommodating chamber; 22: Positioning member; 221: Leakage hole; 222: Mounting hole; 23: Second buffer member; 24: Locking member; 241: First locking portion; 242: Second locking portion; 3: Mounting bracket; 4: First buffer member;
[0024] 200: Install the support. DETAILED DESCRIPTION
[0025] Reference below Figure 1-Figure 3 The limiting device 100 according to the first embodiment of the present invention is described.
[0026] like Figure 1-Figure 3 As shown, the limiting device 100 according to the embodiment of the first aspect of the present utility model includes a guide rod 1, a buffer assembly 2, a mounting frame 3 and a first buffer member 4.
[0027] Specifically, one end of a guide rod 1 is adapted to be connected to a vehicle frame. A buffer assembly 2 is connected to the other end of the guide rod 1 and is movable axially along the guide rod 1. A mounting bracket 3 is disposed at the end of the buffer assembly 2 that is distal from the guide rod 1. A first buffer member 4 is disposed on the mounting bracket 3. When the buffer assembly 2 moves axially along the guide rod 1, it drives the mounting bracket 3 and the first buffer member 4 to move axially along the guide rod 1.
[0028] For example, in Figure 1 and Figure 2 In the example, one end of the guide rod 1 is connected to the vehicle frame, and the buffer assembly 2, the mounting bracket 3 and the first buffer member 4 are arranged in sequence along the axial direction of the guide rod 1 so that the buffer assembly 2, the mounting bracket 3 and the first buffer member 4 can move along the axial direction of the guide rod 1.
[0029] During actual use, the first buffer member 4 is directly subjected to the impact load, and the first buffer member 4 is used to buffer the impact load for the first time to prevent the impact load from directly acting on the mounting frame 3 and causing deformation of the mounting frame 3. The mounting frame 3 transmits the force of the impact load to the buffer assembly 2 through its connection with the buffer assembly 2. The buffer assembly 2 drives the mounting frame 3 and the first buffer member 4 to move along the axial direction of the guide rod 1 toward the frame, buffering the impact load for a second time to reduce the force acting on the frame, thereby preventing deformation and damage to the frame, thereby improving the durability of the frame. In this way, the first buffer member 4 and the buffer assembly 2 are used to buffer the impact load twice, thereby improving the buffering capacity of the limit device 100, thereby improving the durability of the limit device 100, reducing the force acting on the frame, and improving the user's riding comfort.
[0030] In addition, the applicable range of the limiting device 100 is the movable distance of the buffer assembly 2 in the axial direction of the guide rod 1, so that the limiting device 100 is suitable for different buffer gaps, which improves the applicability of the limiting device 100 and reduces the production cost of the vehicle.
[0031] Optionally, the guide rod 1 may be connected to the vehicle frame via a mounting bracket 200 to enhance the connection stability of the limiting device 100 to the vehicle frame.
[0032] Optionally, when the first buffer component 4 is damaged, the first buffer component 4 may be replaced to extend the service life of the limiting device 100 .
[0033] According to the limiting device 100 of the embodiment of the present invention, the buffer assembly 2 drives the mounting frame 3 and the first buffer member 4 to move axially along the guide rod 1, thereby achieving double buffering of the impact load, improving the buffering capacity of the limiting device 100, thereby improving the user's riding comfort while improving the durability of the limiting device 100 and the components connected to the limiting device 100, thereby extending the service life of the limiting device 100 and the components connected to the limiting device 100. At the same time, the applicability of the limiting device 100 is improved, that is, the buffer assembly 2 can move in the axial direction of the guide rod 1 to adapt the limiting device 100 to different buffer gaps.
[0034] According to some embodiments of the present invention, referring to Figure 1 and Figure 2 The buffer assembly 2 includes a housing 21, a stopper 22, and a second buffer 23. The housing 21 has a receiving cavity 211. The stopper 22 is disposed within the receiving cavity 211 and is connected to the other end of the guide rod 1. The second buffer 23 is disposed within the receiving cavity 211 and is located between the stopper 22 and the bottom wall of the housing 21. The second buffer 23 is adapted to abut against a surface of the stopper 22 facing away from the guide rod 1.
[0035] The shell 21 is coaxially sleeved on the guide rod 1, and the limit member 22 and the second buffer member 23 are arranged in the accommodating cavity 211 of the shell 21. The shell 21 is used to constrain and guide the limit member 22, the guide rod 1 and the second buffer member 23, so that the buffer assembly 2 can move stably along the axial direction of the guide rod 1, so as to improve the stability of the limit device 100.
[0036] The limiter 22 is provided at the end of the guide rod 1 away from the vehicle frame, increasing the effective moving distance of the buffer assembly on the guide rod 1. The limiter 22 and the second buffer 23 abut against each other, which facilitates the use of the limiter 22 to limit the second buffer 23. When the impact load applied to the mounting frame 3 and the first buffer 4 is transmitted to the shell 21, causing the shell 21 to move toward the vehicle frame, the distance between the limiter 22 and the bottom wall of the shell 21 decreases, and the second buffer 23 is compressed, achieving a second buffering of the impact load. When the impact load on the mounting frame 3 and the first buffer 4 disappears, the force of the second buffer 23 to restore its deformation can push the shell 21 to drive the mounting frame 3 and the first buffer 4 to move away from the vehicle frame.
[0037] Furthermore, the accommodating cavity 211 is filled with lubricating liquid, such as Figure 3 As shown, at least one leakage hole 221 is formed on the limit member 22. Thus, the use of lubricating oil can reduce the wear between the limit member 22 and the inner wall of the housing 21, and lubricate the second buffer member 23, thereby extending the service life of the limit member 22, the housing 21, and the second buffer member 23, thereby improving the movement efficiency of the buffer assembly 2, improving the performance of the limit device 100, and extending the service life of the limit device 100. The lubricating liquid can flow through the leakage holes 221 into the accommodating cavities 211 on both sides of the limit member 22. When the limit device 100 is subjected to an impact load, the lubricating liquid promptly flows from the side of the limit member 22 away from the frame through the leakage holes 221 to the side of the limit member 22 facing the frame, thereby ensuring the strength of the action of the limit member 22 on the second buffer member 23 and ensuring the second buffering effect of the limit device 100 against the impact load. When the impact load on the limit device 100 disappears, the second buffer member 23 recovers its deformation, increasing the size of the accommodating cavity 211 on the side of the limit member 22 away from the frame. The lubricating fluid then enters the above-mentioned accommodating cavity 211 through the leakage hole 221, and lubrication of the limit member 22 and the second buffer member 23 is achieved during the flow of the lubricating fluid.
[0038] Furthermore, refer to Figure 3The aperture of the leakage hole 221 is D1, where D1 satisfies: 5mm≤D1≤10mm. When D1 is less than 5mm, the aperture of the leakage hole 221 is relatively small. When the limiting device 100 is subjected to an impact load, the lubricating liquid cannot flow from the side of the limiting member 22 away from the frame to the side of the limiting member 22 facing the frame in a timely manner. The lubricating liquid forms resistance to the movement of the limiting member 22, reducing the secondary buffering effect of the buffer assembly 2, making it difficult to fully exert the function of the limiting device 100. When D1 is greater than 10mm, the aperture of the leakage hole 221 is relatively large. Due to the limited size of the cross-sectional area of the limiting member 22, the cross-sectional area of the leakage hole 221 accounts for a large proportion of the cross-sectional area of the limiting member 22, thereby reducing the structural strength of the limiting member 22, reducing the service life of the limiting member 22, and further reducing the service life of the limiting device 100. Therefore, by setting the aperture of the leakage hole 221 to 5mm≤D1≤10mm, the proportion of the cross-sectional area of the leakage hole 221 to the cross-sectional area of the limiter 22 is designed to be more reasonably, so that when the limiter 100 is subjected to an impact load, the lubricating fluid can flow in time from the side of the limiter 22 away from the frame to the side of the limiter 22 facing the frame, thereby giving full play to the buffering effect of the limiter 100, while ensuring the structural strength of the limiter 22 and extending the service life of the limiter 22.
[0039] According to some embodiments of the present invention, referring to Figure 2 and Figure 3 The limiting member 22 is formed with a mounting hole 222 . The buffer assembly 2 further includes a locking member 24 , which is located between the second buffer member 23 and the limiting member 22 . The other end of the guide rod 1 passes through the mounting hole 222 and is connected to the locking member 24 .
[0040] Mounting hole 222 is formed axially in stopper 22, allowing a portion of the end of guide rod 1 away from the vehicle frame to pass through mounting hole 222. Locking member 24 is connected to the aforementioned end of guide rod 1, thereby further enhancing the connection stability between stopper 22 and guide rod 1, preventing guide rod 1 from excessively extending toward second buffer member 23, and preventing guide rod 1 from falling out of mounting hole 222.
[0041] The cross-sectional area of the locking member 24 is larger than that of the mounting hole 222, while the cross-sectional area of the mounting hole 222 is smaller than that of the limiting member 22. This prevents the locking member 24 from protruding from the mounting hole 222, allowing the locking member 24 to be stably connected to the end of the guide rod 1, thereby locking the guide rod 1 and the limiting member 22 and improving the stability of the limiting device 100.
[0042] Optionally, the locking member 24 includes a first locking portion 241 and a second locking portion 242 connected in sequence, the first locking portion 241 is arranged on the side of the second locking portion 242 toward the limiting member 22, and the first locking portion 241 extends in a direction away from the guide rod 1, thereby increasing the stopping area between the locking member 24 and the limiting member 22, thereby improving the locking stability of the locking member 24.
[0043] According to some specific embodiments of the present invention, the stiffness of the second buffer 23 is N, where N satisfies: N ≥ 50 N / m. The stiffness is the ratio of the load increment to the deformation increment, that is, the load required for the second buffer 23 to produce a unit deformation, and the inverse of the stiffness is the flexibility of the second buffer 23. When N < 50 N / m, the stiffness of the second buffer 23 is small, and the flexibility of the second buffer 23 is large, so that the force of the second buffer 23 to recover the deformation after compression is small, and it is difficult to meet the use requirements of the limit device. Therefore, by setting the stiffness of the second buffer 23 to N ≥ 50 N / m, the flexibility of the second buffer 23 is small, the ability of the second buffer 23 to recover the deformation is improved, and the service life of the second buffer 23 is extended, so that the second buffer 23 meets the use requirements of the limit device.
[0044] In addition, refer to Figure 2 The thickness of the shell 21 is D2, and the thickness of the limiting member 22 is D3, wherein D2 and D3 respectively satisfy: D2 ≥ 3mm, D3 ≥ 5mm. When D2 is less than 3mm, the thickness of the shell 21 is small, and the structural strength of the shell 21 is small. When the limiting device 100 is subjected to an impact load, the shell 21 is easily broken, thereby reducing the service life of the limiting device 100. Therefore, by setting the thickness of the shell 21 to D2 ≥ 3mm, the design of the thickness of the shell 21 is more reasonable, so that the structural strength of the shell 21 is suitable for buffering impact loads, extending the service life of the shell 21, and thus extending the service life of the limiting device 100.
[0045] When D3 is less than 5 mm, the thickness of the limiter 22 is small, and the structural strength of the limiter 22 is low, which can easily cause the limiter 22 to break, thereby reducing the service life of the limiter device 100. Therefore, by setting the thickness of the limiter 22 to D3 ≥ 5 mm, the thickness of the limiter 22 is more reasonably designed, making the structural strength of the limiter 22 suitable for buffering impact loads, extending the service life of the limiter 22, and thus extending the service life of the limiter 22, and thus extending the service life of the limiter device 100.
[0046] According to some embodiments of the present invention, referring to Figure 2, the diameter of the guide rod 1 is D4, and the length of the guide rod 1 is L, wherein D4 and L respectively satisfy: D4 ≥ 6 mm, L ≤ 200 mm. When D4 is less than 6 mm, the diameter of the guide rod 1 is small, the structural strength of the guide rod 1 is low, and the guide rod 1 is prone to breakage when subjected to an impact load, thereby reducing the service life of the limiting device 100. Therefore, by setting the diameter of the guide rod 1 to D4 ≥ 6 mm, the design of the diameter of the guide rod 1 is more reasonable, so that the structural strength of the guide rod 1 is suitable for use in buffering impact loads, extending the service life of the guide rod 1, and thus extending the service life of the limiting device 100.
[0047] When L>200mm, the length of the guide rod 1 is relatively large, making the length of the limit device 100 greater than the buffer gap requirement. The first buffer member 4 and the buffer assembly 2 in the limit device 100 are always in a tense state, which can easily cause the buffering performance of the first buffer member 4 and the buffer assembly 2 to decline. At the same time, the long length of the guide rod 1 can also easily cause the guide rod 1 to bend or break, thereby reducing the service life of the limit device 100. Therefore, by setting the length of the guide rod 1 to L≤200mm, the design of the length of the guide rod 1 is more reasonable, making the length of the limit device 100 suitable for the use of the buffer gap, and at the same time extending the service life of the guide rod 1, thereby extending the service life of the limit device 100.
[0048] In some optional embodiments, the first buffer member 4 is a rubber member, and the second buffer member 23 is a spring member. Rubber members are cold-resistant, wear-resistant, elastic, and aging-resistant. Therefore, using a rubber member as the first buffer member 4 improves the cushioning effect of the first buffer member 4 while extending the service life of the first buffer member 4, thereby extending the service life of the limiting device 100. Spring members have excellent elastic limit, fatigue limit, impact toughness, and heat treatment properties. Therefore, using a spring member as the second buffer member 23 improves the cushioning performance of the second buffer member 23 and extends its service life.
[0049] The vehicle according to the embodiment of the second aspect of the present utility model includes the limiting device 100 according to the embodiment of the first aspect of the present utility model.
[0050] According to the vehicle of the embodiment of the present invention, the above-mentioned limiting device 100 is adopted, which is beneficial to improving the buffering performance of the vehicle, making the vehicle suitable for more road conditions and improving the comfort of users in the vehicle. At the same time, the limiting device 100 has strong applicability, which is beneficial to reducing the production cost of the vehicle.
[0051] Other structures and operations of the vehicle according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.
[0052] In the description of the present invention, it should be understood that the terms "center", "length", "thickness", "up", "down", "back", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0053] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.
[0054] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.
[0055] Although the embodiments of the present invention 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 purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A limiting device, characterized in that: include: A guide rod, one end of which is suitable for being connected to the frame, A buffer assembly, the buffer assembly is connected to the other end of the guide rod, and the buffer assembly is movable along the axial direction of the guide rod; A mounting frame, the mounting frame being arranged at an end of the buffer assembly away from the guide rod; a first buffer member, the first buffer member being arranged on the mounting frame; When the buffer assembly moves along the axial direction of the guide rod, it drives the mounting frame and the first buffer member to move along the axial direction of the guide rod.
2. The limiting device according to claim 1, characterized in that: The buffer assembly comprises: A housing having a receiving cavity; A limiting member, the limiting member is arranged in the accommodating cavity and the limiting member is connected to the other end of the guide rod; The second buffer is arranged in the accommodating cavity and is located between the limiting member and the bottom wall of the shell. The second buffer is suitable for abutting against a side surface of the limiting member away from the guide rod.
3. The limiting device according to claim 2, characterized in that: The accommodating cavity is filled with lubricating liquid, and the limiting member is formed with at least one liquid leakage hole.
4. The limiting device according to claim 3, characterized in that: The aperture of the leakage hole is D1, wherein D1 satisfies: 5mm≤D1≤10mm.
5. The limiting device according to claim 2, characterized in that: The limiting member is formed with a mounting hole, The buffer assembly also includes: A locking member, wherein the locking member is located between the second buffer member and the limiting member, and the other end of the guide rod passes through the mounting hole and is connected to the locking member; Wherein, the cross-sectional area of the locking member is larger than the cross-sectional area of the mounting hole, and the cross-sectional area of the mounting hole is smaller than the cross-sectional area of the limiting member.
6. The limiting device according to claim 2, characterized in that: The stiffness of the second buffer is N, wherein N satisfies: N≥50N / m.
7. The limiting device according to claim 2, characterized in that: The thickness of the shell is D2, and the thickness of the limiter is D3, wherein D2 and D3 respectively satisfy: D2 ≥ 3 mm, D3 ≥ 5 mm.
8. The limiting device according to claim 1, characterized in that: The diameter of the guide rod is D4, and the length of the guide rod is L, wherein D4 and L respectively satisfy: D4≥6mm, L≤200mm.
9. The limiting device according to any one of claims 2 to 7, characterized in that: The first buffer component is a rubber component, and the second buffer component is a spring component.
10. A vehicle, characterized in that: It comprises a limiting device according to any one of claims 1 to 9.