Limiting mechanism and vehicle with same

Abstract

The invention provides a limiting mechanism and a vehicle with the same, the limiting mechanism is used for limiting a roller sliding along a guide rail, and the limiting mechanism comprises a mounting seat, a limiting mechanism and a driving mechanism, the limiting assembly is arranged in the mounting base and connected with the mounting base, the limiting assembly comprises a framework and a limiting structure wrapping at least part of the framework, and the limiting structure is provided with a stop surface used for limiting and stopping the roller; the framework comprises a first supporting part and a second supporting part which are connected with each other, the first supporting part is used for supporting the stop surface, and the second supporting part is used for supporting the first supporting part; wherein the limiting structure is made of an elastic material. The technical problems that in the prior art, a limiting structure for limiting the automobile sliding door is poor in limiting reliability, and the use requirement of a user is difficult to meet are solved.

Description

Technical Field

[0001] This application relates to the field of door limiting technology, specifically to a limiting mechanism and a vehicle having the same. Background Technology

[0002] In existing technologies, the roller limiting structure design of automotive sliding doors is mainly divided into two categories: X-axis installation and Y-axis installation. Specifically, in the X-axis installation method, the limiting block is fixed to the limiting block mounting plate by a snap-fit ​​mechanism. The advantages of this design are its small size, simple structure, and obvious limiting effect. However, due to prolonged use and the aging of rubber materials, the snap-fit ​​limiting block is prone to loosening, especially under the impact of high-speed door opening, increasing the risk of roller derailment. This not only affects the normal use of the sliding door but may also lead to serious safety issues. While the Y-axis installation method provides a more secure fixing method through bolt connections, effectively avoiding the problem of limiting block loosening due to impact and material aging, its complex structure requires larger limiting blocks and a more complex connection design. This not only increases manufacturing costs but also places higher demands on the process, increases assembly difficulty, and reduces assembly efficiency.

[0003] In summary, the existing sliding door roller limiting structure has the risk of loosening due to impact and material aging when installed in the X direction, while it faces problems such as high cost, complex process, difficult assembly, and high requirements for the side panels when installed in the Y direction, all of which are difficult to meet the user's needs.

[0004] There is currently no good solution to the above problems. Summary of the Invention

[0005] This application provides a limiting mechanism and a vehicle having the same, to at least solve the technical problem in the related art that the limiting structure used to limit the sliding door of an automobile has poor limiting reliability and is difficult to meet the user's needs.

[0006] According to one aspect of the embodiments of this application, a limiting mechanism is provided for limiting a roller sliding along a guide rail. The limiting mechanism includes: a mounting base for connecting to the guide rail; and a limiting component disposed within and connected to the mounting base. The limiting component includes a frame and a limiting structure covering at least a portion of the frame. The limiting structure has a stop surface for limiting and stopping the roller. The frame includes a first support portion and a second support portion connected to each other. The first support portion supports the stop surface, and the second support portion supports the first support portion. The limiting structure is made of an elastic material.

[0007] Furthermore, the frame also includes a first connecting portion, which is connected to a first support portion and / or a second support portion. The limiting structure includes: a sleeve having an opening and a receiving cavity that communicate with each other, the first support portion and the second support portion both located in the receiving cavity, and the first connecting portion passing through the opening; the sleeve having a stop surface; and a second connecting portion connected to the sleeve and located at the mounting opening, the second connecting portion being disposed away from the stop surface. The limiting mechanism also includes fasteners, which pass through the mounting base, the first connecting portion, and the second connecting portion to connect the mounting base and the limiting assembly.

[0008] Furthermore, the first support part is a first plate, the second support part is a second plate, and the first plate and the second plate are arranged at an angle; the frame also includes: a third plate, which is connected to the second plate and is arranged at an angle to the second plate, and the third plate is arranged opposite to the first plate; the first connecting part is connected to the second plate through the third plate.

[0009] Furthermore, a protrusion is provided on the surface of the second connecting part, and a first preset gap is provided between the protrusion and the side plate of the vehicle body. The first preset gap is greater than or equal to 2.0 mm and less than or equal to 3.0 mm.

[0010] Furthermore, the first support part contacts the stop surface, and the sleeve also has a connecting surface connected to the stop surface, with a second preset gap between the connecting surface and the first support part; wherein, the stop surface protrudes from the connecting surface and the protrusion height is greater than or equal to 2.5mm and less than or equal to 3.5mm, the connecting surface is opposite to the guide rail, and the stop surface avoids the guide rail.

[0011] Furthermore, the mounting base includes: a base body, a limiting component disposed within the base body and connected to the base body; and a mounting plate connected to one side of the base body, the mounting plate having a mounting groove for mounting a guide rail, the groove wall of the mounting groove being welded to the guide rail.

[0012] Furthermore, the base body includes a base plate and a fourth plate, a fifth plate, and a sixth plate connected to the base plate. The fourth plate and the fifth plate are disposed opposite to each other and connected to a mounting plate, and the sixth plate is disposed opposite to the mounting plate, so that the base plate, the fourth plate, the fifth plate, and the sixth plate surround to form a mounting cavity, which is used to install a limiting component; wherein, the fifth plate and / or the sixth plate are fitted with the limiting component to limit and stop the limiting component.

[0013] Furthermore, the base body also includes: a third connecting part, which is connected to the sixth plate body, and the third connecting part is located outside the mounting cavity; wherein the third connecting part has a mounting hole for fasteners to pass through.

[0014] Furthermore, the frame is made of steel; and / or, the frame is made by one-piece stamping; and / or, the mounting base is a one-piece molded structure.

[0015] According to another aspect of the embodiments of this application, a vehicle is also provided, including: a vehicle body, including a guide rail, a limiting mechanism and a side panel, the limiting mechanism being located between the side panel and the guide rail; a door body, including a roller, the roller being slidably disposed on the guide rail; wherein, the limiting mechanism is located at the end of the guide rail for limiting and stopping the roller; the limiting mechanism is the aforementioned limiting mechanism.

[0016] In this embodiment, by providing a limiting component comprising a frame and a limiting structure made of elastic material within the mounting base, the stability and durability of the limiting structure are enhanced, thereby achieving the technical effect of reliably limiting the roller sliding along the guide rail. Simultaneously, the interconnection of the first and second support parts enhances the mechanical strength of the entire limiting component. The first support part directly supports the stop surface, ensuring its rigidity when the roller contacts it, preventing deformation due to impact. The second support part further strengthens the stability of the first support part, preventing it from shifting or being damaged by external forces. This solves the technical problem in related technologies where the limiting structure used for limiting car sliding doors has poor limiting reliability and fails to meet user needs. Furthermore, the elastic material used in the limiting structure can deform appropriately to absorb impact energy when subjected to roller impact, while maintaining sufficient resilience to ensure the roller does not detach from the guide rail, effectively improving the safety of the sliding door during high-speed opening and closing. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a schematic diagram of a limiting mechanism and a guide rail assembled according to an embodiment of this application;

[0019] Figure 2 yes Figure 1 A partially enlarged view of the limiting mechanism and guide rail after assembly;

[0020] Figure 3 yes Figure 1 A three-dimensional structural diagram of the skeleton of the limiting mechanism in the middle;

[0021] Figure 4 yes Figure 1 A three-dimensional structural diagram of the limiting structure of the limiting mechanism in the middle;

[0022] Figure 5 yes Figure 1 A three-dimensional structural diagram of the mounting base for the limiting mechanism in the middle;

[0023] Figure 6 yes Figure 1 A perspective view of the limiting component of the limiting mechanism in the middle;

[0024] Figure 7 yes Figure 1 A three-dimensional structural diagram of the mounting base and guide rail of the limiting mechanism after assembly.

[0025] The above figures include the following reference numerals:

[0026] 10. Guide rail;

[0027] 20. Mounting base; 21. Base body; 211. Substrate; 213. Fourth plate; 214. Fifth plate; 215. Sixth plate; 216. Third connecting part; 22. Mounting plate;

[0028] 30. Frame; 31. First support part; 32. Second support part; 33. First connecting part; 34. Third plate;

[0029] 40. Limiting structure; 41. Stop surface; 42. Sleeve body; 421. Connecting surface; 43. Second connecting part; 431. Protrusion;

[0030] 50. Fasteners; 51. Mounting holes;

[0031] 60. Side panels;

[0032] 100. Limiting mechanism. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0034] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0035] This embodiment provides a limiting mechanism and a vehicle having the same.

[0036] like Figures 1 to 7 As shown, the limiting mechanism is used to limit the roller sliding along the guide rail 10. The limiting mechanism includes a mounting base 20 and a limiting assembly. The mounting base 20 is used to connect to the guide rail 10. The limiting assembly is disposed within and connected to the mounting base 20. The limiting assembly includes a frame 30 and a limiting structure 40 covering at least a portion of the frame 30. The limiting structure 40 has a stop surface 41 for limiting and stopping the roller. The frame 30 includes a first support portion 31 and a second support portion 32 connected to each other. The first support portion 31 supports the stop surface 41, and the second support portion 32 supports the first support portion 31. The limiting structure 40 is made of an elastic material.

[0037] By applying the technical solution of this embodiment, a limiting component including a frame 30 and a limiting structure 40 made of elastic material is provided in the mounting base 20, thereby enhancing the stability and durability of the limiting structure and achieving the technical effect of reliably limiting the roller sliding along the guide rail 10. Simultaneously, the interconnection of the first support part 31 and the second support part 32 enhances the mechanical strength of the entire limiting component. The first support part 31 directly supports the stop surface 41, ensuring the rigidity of the stop surface 41 when the roller contacts it, and preventing the stop surface 41 from deforming due to impact. The second support part 32 further strengthens the stability of the first support part 31, preventing the first support part 31 from shifting or being damaged due to external forces. This solves the technical problem in related technologies where the limiting structure used for limiting automobile sliding doors has poor limiting reliability and fails to meet user needs. The elastic material used in the limiting structure 40 can generate appropriate deformation to absorb impact energy when subjected to the impact of the roller, while maintaining sufficient resilience to ensure that the roller will not come out of the guide rail, effectively improving the safety of the sliding door during high-speed opening and closing.

[0038] like Figure 3As shown, the frame 30 includes a first connecting portion 33, which is connected to the first support portion 31 and / or the second support portion 32. The limiting structure 40 includes a sleeve 42 and a second connecting portion 43. The sleeve 42 has an opening and a receiving cavity that communicate with each other. The first support portion 31 and the second support portion 32 are both located in the receiving cavity, and the first connecting portion 33 passes through the opening. The sleeve 42 has a stop surface 41. The second connecting portion 43 is connected to the sleeve 42 and is located at the mounting opening. The second connecting portion 43 is disposed away from the stop surface 41. The limiting mechanism also includes a fastener 50, which passes through the mounting base 20, the first connecting portion 33, and the second connecting portion 43 to connect the mounting base 20 and the limiting assembly. In this way, by designing the skeleton 30 to include the first connecting part 33 and connect it to the first support part 31 and / or the second support part 32, combined with the setting of the sleeve 42 and the second connecting part 43 in the limiting structure 40, the overall structural stability of the limiting component is enhanced and the assembly process is simplified, thereby achieving a more accurate and durable roller limiting effect. This solves the technical problem that traditional limiting structures are complex to assemble and prone to loosening or separation of some parts under long-term operation or strong vibration, affecting the limiting function.

[0039] Specifically, the opening and receiving cavity design of the sleeve 42 allows the first support 31 and the second support 32 to be securely placed inside, while the first connecting part 33 passes through the opening and corresponds to the mounting port of the mounting base 20. This not only ensures a tight fit between the limiting structure 40 and the frame 30, but also facilitates the positioning of the entire limiting assembly within the mounting base 20. The second connecting part 43 is positioned away from the stop surface 41, allowing the fastener 50 to pass through the mounting port of the mounting base 20 through the first connecting part 33 and the second connecting part 43, fixing the limiting assembly to the mounting base 20 and forming a tightly integrated whole. In this way, the above-mentioned design not only simplifies the assembly process, eliminates the need for independent assembly between multiple parts, and reduces the possibility of assembly errors, but also significantly improves the rigidity and tightness of the limiting mechanism through the through connection of the fastener 50. Even after being subjected to high-intensity impacts or undergoing long-term use, the limiting assembly can still maintain good structural integrity and continuously and effectively limit the roller, avoiding the risk of roller derailment. Meanwhile, the limiting structure 40, made of elastic material and rigidly integrated with the frame, allows the limiting mechanism to absorb some of the impact energy when facing the roller impact. Simultaneously, the frame maintains the geometric accuracy of the stop surface 41, ensuring the precision of the limiting effect and the durability of the limiting structure. This structural design may also reduce manufacturing costs because it reduces the need for high-precision machining.

[0040] like Figure 3As shown, the first support part 31 is the first plate, and the second support part 32 is the second plate, with the first plate and the second plate arranged at an angle. The frame 30 also includes a third plate 34. The third plate 34 is connected to the second plate and is arranged at an angle to the second plate, and is opposite to the first plate; the first connecting part 33 is connected to the second plate through the third plate 34. In this way, by using the first support part 31 as the first plate and the second support part 32 as the second plate, and setting these two plates at a certain angle, while introducing the third plate 34 which is also connected to the second plate at an angle and is opposite to the first plate, and connecting the first connecting part 33 through the third plate 34, the structural rigidity and impact resistance of the limiting component are enhanced, thereby achieving a superior roller limiting function and a more stable operating state, and thus solving the technical problem that the roller is prone to derailment during high-speed movement or sudden impact due to insufficient rigidity of the limiting structure.

[0041] Specifically, the angle design between the first and second plates forms a structural unit with triangular stability, thus providing higher structural stability mechanically. This allows the limiting component to effectively disperse and resist stress when subjected to the impact of the roller, preventing overall structural deformation or failure due to force in a single direction. The aforementioned design of the third plate 34 increases the overall thickness and strength of the limiting component. Furthermore, the angle between the third plate 34 and the second plate, as well as its relative arrangement with the first plate, together construct a three-dimensional protective frame, providing support in multiple directions and significantly enhancing impact resistance. Simultaneously, the first connecting part 33 connects to the second plate via the third plate 34. This design ensures precise positioning between the limiting component and the mounting base 20. The fasteners 50 ensure a secure connection between the limiting component and the mounting base 20, preventing loosening or misalignment of components due to vibration or frequent door opening and closing during use, further guaranteeing the reliability and durability of the limiting function.

[0042] Optionally, a protrusion 431 is provided on the surface of the second connecting portion 43. A first preset gap exists between the protrusion 431 and the side panel 60 of the vehicle body. This first preset gap is greater than or equal to 2.0 mm and less than or equal to 3.0 mm. Thus, when subjected to impact, the elastic material of the limiting structure 40 will deform. If the deformation exceeds the preset range, the protrusion 431 will contact the side panel 60 of the vehicle body. The X-axis support force provided by the first preset gap can prevent further deformation of the limiting structure 40, thus preventing the roller from slipping out of the guide rail. Since the first preset gap is controlled between 2.0 mm and 3.0 mm, this contact occurs within a controllable range, avoiding damage to components that may be caused by excessive compression, while ensuring sufficient support is provided when necessary.

[0043] In this embodiment, the first preset gap is 2.5mm. In this way, the protrusion 431 and the side plate 60 have a gap of 2.5mm, which not only facilitates assembly, but also allows the protrusion 431 to contact the side plate 60 after the buffer block is deformed by impact, providing X-direction support force, thereby better preventing the roller from breaking through the limiting structure.

[0044] Optionally, the first support portion 31 contacts the stop surface 41, and the sleeve 42 also has a connecting surface 421 that connects to the stop surface 41. A second preset gap exists between the connecting surface 421 and the first support portion 31. The stop surface 41 protrudes from the connecting surface 421 with a protrusion height greater than or equal to 2.5 mm and less than or equal to 3.5 mm. The connecting surface 421 is positioned opposite to the guide rail 10, while the stop surface 41 avoids the guide rail 10. This protruding design of the stop surface 41 ensures that when the roller contacts the stop surface 41, the roller remains within the protection range of the guide rail 10. The contact between the stop surface 41 and the first support portion 31, and the control of the protrusion height of the stop surface 41 between 2.5 mm and 3.5 mm, precisely control the stopping position of the roller, preventing the roller from crossing the end of the guide rail when impacted, effectively avoiding safety hazards caused by roller derailment in sliding doors. Meanwhile, the existence of the second preset gap allows the stop surface 41 to deform freely within a certain range when subjected to the impact of the roller, absorbing the impact energy without directly squeezing the first support part 31, reducing material fatigue and damage, and extending the service life of the limiting structure.

[0045] In this embodiment, the stop surface 41 protrudes from the connecting surface 421 and the protrusion height is 3.0mm. In this way, the stop surface 41 protrudes 3mm in the X direction to make early contact with the roller. When the roller opens to the maximum position and hits the stop surface 41, the roller is still inside the guide rail and away from the guide rail port, preventing the roller from sliding out of the gap from the guide rail.

[0046] like Figure 5 and Figure 7As shown, the mounting base 20 includes a base body 21 and a mounting plate 22. A limiting component is disposed within and connected to the base body 21. The mounting plate 22 is connected to one side of the base body 21 and has a mounting groove for mounting the guide rail 10, the groove wall of which is welded to the guide rail 10. Thus, the mounting base 20 comprises the base body 21 and the mounting plate 22, with the limiting component cleverly placed within and connected to the base body. The mounting plate 22 is equipped with a dedicated mounting groove for fixing the guide rail 10, and the groove wall is welded to the guide rail 10, achieving several significant technical effects. Furthermore, integrating the limiting component inside the base body 21 simplifies the overall structure of the sliding door and enhances the stability and mechanical strength of the entire limiting structure through the direct connection between the mounting base and the limiting component. This ensures reliable limiting action when subjected to roller impact, reducing the risk of roller derailment during high-speed opening of the sliding door.

[0047] In this embodiment, the mounting groove design on the mounting plate 22 provides a precise positioning platform for the guide rail 10, and the welding fixation achieves a firm connection between the guide rail and the mounting base. Welding, as a strong connection method, can provide greater connection strength and durability compared to bolts or other connection methods, ensuring the stability of the guide rail 10's position even under long-term vehicle operation and complex road conditions.

[0048] like Figure 5 As shown, the base body 21 includes a base plate 211 and a fourth plate 213, a fifth plate 214, and a sixth plate 215 connected to the base plate 211. The fourth plate 213 and the fifth plate 214 are disposed opposite to each other and connected to the mounting plate 22. The sixth plate 215 is disposed opposite to the mounting plate 22, so that the base plate 211, the fourth plate 213, the fifth plate 214, and the sixth plate 215 surround each other to form a mounting cavity for mounting a limiting component. The fifth plate 214 and / or the sixth plate 215 are fitted with the limiting component to limit and stop the limiting component. In this way, by designing the base body 21 to include the base plate 211 and the fourth plate 213, the fifth plate 214, and the sixth plate 215 connected thereto, a mounting cavity is formed around the limiting component, achieving the purpose of precise positioning of the limiting component and enhanced support effect.

[0049] Specifically, the combination of base plate 211 with the fourth plate 213, fifth plate 214, and sixth plate 215 together constructs a closed mounting cavity. This multi-plate structure not only increases the structural rigidity of the mounting base 20 but also provides comprehensive support for the limiting component, ensuring that the limiting component is firmly fixed within the mounting base when subjected to roller impacts, thus enhancing the reliability of the limiting effect. The design of the fifth plate 214 and / or the sixth plate 215 fitting snugly with the limiting component allows for precise control of the limiting component's position, ensuring stability within the mounting cavity and reducing positional deviations caused by vibration or impact. This stopping effect helps to accurately control the roller's stopping position when it contacts the limiting component, preventing derailment and improving the safety performance of the sliding door. Simultaneously, the formation of the mounting cavity and the fitting between the plates simplify the assembly process of the limiting component, enabling rapid installation without complex positioning tools. The mounting cavity constructed by the base plate 211 and the surrounding fourth, fifth and sixth plates can make reasonable use of the space inside the vehicle body, making the installation of the limiting components more compact, reducing the impact on the vehicle's internal layout, and helping to improve the overall design freedom and aesthetics of the vehicle.

[0050] In this embodiment, the multi-plate structure of the base body 21 and the limiting components that closely cooperate with it together form a limiting system with high strength and good durability.

[0051] like Figure 5 As shown, the seat body 21 also includes a third connecting portion 216. The third connecting portion 216 is connected to the sixth plate 215 and is located outside the mounting cavity. The third connecting portion 216 has a mounting hole 51 for the fastener 50 to pass through. This configuration of the third connecting portion 216 provides an additional fixing point for the fastener 50. The third connecting portion 216 is independent of the mounting cavity and connects to the limiting assembly or other components through the mounting hole 51. This separate design avoids the influence of the internal structure of the mounting cavity on the connection stability, ensures a secure connection between the limiting assembly and the vehicle body, and enhances the overall stability of the sliding door system. Simultaneously, the location of the mounting hole 51 on the outside of the mounting cavity in the third connecting portion 216 simplifies the assembly process, allowing assemblers to easily access and operate the fastener 50 from the outside without disassembling or adjusting the internal structure of the mounting cavity.

[0052] In this embodiment, the connection between the third connecting part 216 and the sixth plate 215, as well as the fastener 50, strengthen the overall structural rigidity of the mounting base 20. Especially under high-frequency use and external impact, it can effectively prevent the components from loosening or deforming, and improve the durability and reliability of the limiting component.

[0053] Optionally, the frame 30 is made of steel; and / or, the frame 30 is integrally stamped; and / or, the mounting base 20 is an integrally formed structure. Using steel as the material for the frame 30, its high hardness and strength significantly improve the overall rigidity of the limiting component, making it less prone to deformation or damage when subjected to the impact force of the roller, thereby enhancing the stability of the limiting effect and reducing the risk of the roller derailing during high-speed movement. Simultaneously, the integrally stamped frame 30 and the integrally formed mounting base 20 simplify the assembly steps in the production process, reduce the number of parts, and avoid additional welding or screw connections, thereby improving production efficiency and reducing production costs.

[0054] In this embodiment, the frame 30 is made of steel and is integrally stamped. The mounting base 20 is a one-piece molded structure. This one-piece molding structure reduces potential structural defects and improves the product yield.

[0055] This application also provides a vehicle, including a body and a door. The body includes a guide rail 10, a limiting mechanism 100, and a side panel 60, with the limiting mechanism 100 located between the side panel 60 and the guide rail 10. The door includes rollers slidably mounted on the guide rail 10. The limiting mechanism 100 is located at the end of the guide rail 10 to limit and stop the rollers; the limiting mechanism 100 is the aforementioned limiting mechanism.

[0056] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0057] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0058] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0059] The above description is only a preferred embodiment of this application. 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 application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A limiting mechanism for limiting a roller sliding along a guide rail (10), characterized in that, The limiting mechanism comprises: a mounting seat (20) for connecting with the guide rail (10); a limiting assembly arranged in and connected with the mounting seat (20), the limiting assembly comprising a framework (30) and a limiting structure (40) covering at least part of the framework (30), the limiting structure (40) having a stop surface (41) for limiting and stopping the roller; the framework (30) comprising a first support part (31) for supporting the stop surface (41) and a second support part (32) for supporting the first support part (31); wherein the limiting structure (40) is made of elastic material.

2. The position limiting mechanism of claim 1, wherein The framework (30) further comprises a first connecting part (33) connected with the first support part (31) and / or the second support part (32), and the limiting structure (40) comprises: a sleeve body (42) having an opening and a receiving cavity in communication with each other, the first support part (31) and the second support part (32) being located in the receiving cavity, and the first connecting part (33) being arranged in the opening; the sleeve body (42) having the stop surface (41); a second connecting part (43) connected with the sleeve body (42) and located at the mounting opening, the second connecting part (43) being arranged away from the stop surface (41); wherein the limiting mechanism further comprises a fastener (50) arranged on the mounting seat (20), the first connecting part (33) and the second connecting part (43) to connect the mounting seat (20) and the limiting assembly.

3. The stop mechanism of claim 2, wherein The first support part (31) is a first plate body, the second support part (32) is a second plate body, and the first plate body is arranged at an angle with the second plate body; the framework (30) further comprises: a third plate body (34) connected with the second plate body and arranged at an angle with the second plate body, the third plate body (34) being arranged opposite to the first plate body; the first connecting part (33) being connected with the second plate body through the third plate body (34).

4. The stop mechanism of claim 2, wherein The second connecting part (43) is provided with a protrusion (431) on the surface thereof, the protrusion (431) having a first predetermined gap with a side plate (60) of a vehicle body, the first predetermined gap being greater than or equal to 2.0 mm and less than or equal to 3.0 mm.

5. The stop mechanism of claim 2, wherein The first support part (31) is in contact with the stop surface (41), the sleeve body (42) further has a connecting surface (421) connected with the stop surface (41), the connecting surface (421) having a second predetermined gap with the first support part (31); wherein the stop surface (41) is arranged protruding from the connecting surface (421) and has a protruding height greater than or equal to 2.5 mm and less than or equal to 3.5 mm, the connecting surface (421) being arranged opposite to the guide rail (10), and the stop surface (41) being arranged avoiding the guide rail (10).

6. The limit mechanism of claim 2, wherein The mounting base (20) comprises: a seat body (21), the limiting assembly is arranged in and connected with the seat body (21); a mounting plate (22) connected with one side of the seat body (21), the mounting plate (22) has a mounting groove for mounting the guide rail (10), and the groove wall of the mounting groove is welded with the guide rail (10).

7. The limit mechanism of claim 6, wherein, The seat body (21) comprises a base plate (211), a fourth plate body (213), a fifth plate body (214) and a sixth plate body (215) connected with the base plate (211), the fourth plate body (213) is arranged opposite to the fifth plate body (214) and connected with the mounting plate (22), and the sixth plate body (215) is arranged opposite to the mounting plate (22), so that the base plate (211), the fourth plate body (213), the fifth plate body (214) and the sixth plate body (215) surround to form a mounting cavity for mounting the limiting assembly; wherein the fifth plate body (214) and / or the sixth plate body (215) are fitted with the limiting assembly, so as to limit and stop the limiting assembly.

8. The limit mechanism of claim 7, wherein, The seat body (21) further comprises: a third connecting portion (216) connected with the sixth plate body (215), the third connecting portion (216) is located outside the mounting cavity; wherein the third connecting portion (216) has a mounting hole (51) for the fastener (50) to pass through.

9. The limiting mechanism according to claim 1, wherein: the framework (30) is made of steel material; and / or, the framework (30) is made by one-piece stamping; and / or, the mounting base (20) is a one-piece structure.

10. A vehicle characterized by comprising: Comprise: a vehicle body comprising a guide rail (10), a limiting mechanism (100) and a side plate (60), the limiting mechanism (100) is located between the side plate (60) and the guide rail (10); a door body comprising a roller, the roller is slidably arranged on the guide rail (10); wherein the limiting mechanism (100) is located at the end of the guide rail (10) for limiting and stopping the roller; the limiting mechanism (100) is the limiting mechanism according to any one of claims 1 to 9.

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