Sliding door limiting device and automobile

Abstract

The utility model relates to the technical field of automobile sliding doors, in particular to a sliding door limiting device and an automobile, the sliding door limiting device comprises a convex block assembly and a concave block assembly, the convex block assembly comprises a convex block base, a first boss arranged on the convex block base in a protruding mode and a second boss arranged on the first boss in a protruding mode, the concave block assembly comprises a concave block base, a third boss and a groove, the third boss is arranged on the concave block base in a protruding mode, the groove is formed in the third boss, a buffering assembly connected with the third boss in a sliding mode is arranged in the groove, and the second boss can be clamped in the groove and abuts against the buffering assembly. By limiting the concave-convex block, eccentric wear of the contact position of the concave-convex block is avoided, and the abnormal knocking sound of the concave-convex block of the vehicle door when the vehicle passes through a bumpy road section is eliminated.

Description

Technical Field

[0001] This utility model relates to the technical field of automobile sliding doors, and more specifically, to a sliding door limiting device and an automobile. Background Technology

[0002] The rear door assembly of an MPV (Multi-Purpose Vehicle) differs from that of a regular sedan. MPVs typically use sliding doors, meaning that when the door needs to be opened, it slides to the C-pillar or D-pillar using a motor and rails, allowing passengers to enter and exit completely unobstructed. When closing, unlike the rotating opening and closing mechanism of ordinary doors, MPVs usually incorporate recesses on the door and protrusions on the door frame to provide restraint, ensuring the sliding door closes properly without impacting the door frame.

[0003] Currently, the structural design of sliding door latches primarily employs a plastic-metal injection molding process. The metal structure acts as the base for bolt fastening, while a layer of plastic is injected onto the metal structure to provide contact and engagement. However, this type of limiting structure is prone to wear during use, ultimately leading to knocking noises when vehicles pass over bumpy roads, increasing after-sales costs and impacting brand reputation. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies where sliding door bumps and recesses cause knocking noises when vehicles pass over bumpy roads. This invention provides a sliding door limiting device and a vehicle that can ensure tight contact between the sliding door bumps and recesses throughout the vehicle's entire lifespan, thus solving the problem of knocking noises caused by wear on the bumps and recesses.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A sliding door limiting device is provided, including a protrusion assembly and a concave assembly. The protrusion assembly includes a protrusion base, a first protrusion protruding from the protrusion base, and a second protrusion protruding from the first protrusion. The concave assembly includes a concave base, a third protrusion protruding from the concave base, and a groove disposed in the third protrusion. A buffer assembly is provided in the groove and is slidably connected to the third protrusion. The second protrusion can be engaged in the groove and abuts against the buffer assembly.

[0007] This utility model's sliding door limiting device comprises a protrusion assembly consisting of a protrusion base, a first protrusion protruding from the protrusion base, and a second protrusion protruding from the first protrusion. By adjusting the relative position and protrusion angle of the first and second protrusions, the engaging position and fitting angle of the protrusions and concave blocks in different vehicle models can be accommodated, increasing versatility. The concave base, a third protrusion protruding from the concave base, and a groove inside the third protrusion together constitute a concave block assembly. A slidable buffer component is provided inside the groove. When the sliding door is moved to the closed state, the second protrusion engages in the groove, and the buffer component in the groove abuts against the second protrusion, providing a stable clamping effect and ensuring that the concave block assembly and the protrusion assembly always maintain close contact. By limiting the protrusion assembly and the concave block assembly, uneven wear at the contact position of the concave block assembly and the protrusion assembly is prevented, eliminating knocking noises at the door's protrusion and concave block positions when the vehicle passes over bumpy roads.

[0008] Furthermore, the buffer assembly is provided in multiple sets within the groove, each abutting against different end faces of the second boss. With multiple sets of buffer assemblies abutting against different end faces of the second boss, during vehicle vibrations, regardless of the direction the boss assembly moves within the groove, it will always remain in contact with the buffer assembly, thus maintaining a stable clamping and limiting effect throughout the entire lifespan of the vehicle body and preventing abnormal noises.

[0009] Furthermore, the buffer assembly includes a slider and an elastic element. The third boss has a mounting groove, and the elastic element is disposed within the mounting groove. One end of the slider abuts against the second boss, and the other end abuts against the elastic element. During the installation of the buffer assembly, a certain preload is applied to compress the elastic element within the mounting groove. When the second boss engages with the groove, the slider, under the action of the elastic element, slides out of the mounting groove, always maintaining contact with the second boss, thereby achieving stable positioning.

[0010] Furthermore, the slider includes a clamping part and multiple sets of connecting parts connected to the clamping part, the connecting parts abutting against the elastic element. The clamping part is used to fix the position of the second boss, the number of connecting parts can be adjusted according to the size of the clamping part, and the multiple sets of connecting parts abutting against the elastic element are used to drive the clamping part to move, ensuring that the displacement of each part of the clamping part is the same, the overall structure is stable, and tilting is avoided during movement.

[0011] Furthermore, the buffer assembly also includes a pin, and the connecting portion has a through hole. The pin passes through the through hole and engages with the third boss. The pin engaging with the third boss through the through hole prevents the slider from disengaging from the third boss when the vehicle is bumpy.

[0012] Furthermore, the diameter of the through hole is larger than the diameter of the pin. This larger diameter allows the connecting part to slide within the groove. By adjusting the diameter of the through hole, the stroke of the slider can be controlled, thereby adapting to the mating requirements of different vehicle models.

[0013] Furthermore, the clamping part includes a guide surface, a first clamping surface, and a second clamping surface. The first clamping surface is connected at both ends to the guide surface and the second clamping surface, respectively. The guide surface is located on the side away from the bottom of the groove, and both the guide surface and the second clamping surface are inclined to the first clamping surface. The guide surface is located away from the bottom of the groove, close to the protrusion, and inclined to the first clamping surface, providing guidance for the second protrusion and facilitating its rapid insertion into the groove. The third clamping surface is inclined to the second clamping surface, causing the overall shape of the clamping part to conform to the surface shape of the second protrusion, improving the fit between the clamping part and the second protrusion.

[0014] Furthermore, the slider is provided with multiple sets of parallel ribs. These ribs reduce the contact area between the slider and the second boss, thereby reducing friction and making it easier for the protrusion assembly to engage with the concave assembly. They also reduce wear during use, extending service life.

[0015] Furthermore, the first boss is provided with a connector plate, the second boss has a connector groove, the connector plate is inserted into the connector groove, the third boss has multiple sets of fixing grooves, and the recessed base has a fixing block that is detachably connected to the fixing groove. The connector plate and the connector groove cooperate to realize the detachable connection between the second boss and the first boss; the mounting groove and the mounting block cooperate to realize the detachable connection between the third boss and the recessed assembly. Instead of being a one-piece molded structure, the boss assembly and the recessed assembly adopt a split structure, which allows the recessed base, the boss base, and the first boss to be made of metal materials, improving their connection strength with the vehicle body structure, while the second boss and the third boss can be made of plastic material, covering the metal structure, making it easier to align and engage during use, and the overall structure is not easily damaged.

[0016] This utility model also provides an automobile, including a body door frame, a door, and the aforementioned sliding door limiting device, wherein the protrusion assembly is connected to the door, and the concave assembly is connected to the body door frame; or the protrusion assembly is connected to the body door frame, and the concave assembly is connected to the door.

[0017] This utility model relates to a car with a sliding door limiting mechanism between the door and the door frame. This mechanism can be designed with either a protruding component on the door and a recessed component on the door frame, or a protruding component on the door frame and a recessed component on the car body. This conceals the sliding door limiting device, making the connection between the door and door frame appear simple and unobtrusive, thus improving the overall aesthetics. Simultaneously, it eliminates knocking noises from the protruding and recessed components when the vehicle travels over bumpy roads.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. By limiting the contact points of the bumps, uneven wear at the contact points of the bumps is prevented, thus eliminating knocking noises at the bumps on the door when the vehicle passes over bumpy roads.

[0020] 2. Compatible with multiple MPV models, the travel of the buffer components can be adjusted according to the requirements of different models, so as to maintain stable clamping limit between the concave and convex blocks;

[0021] 3. It replaces the traditional method of hard connection of bump blocks, eliminating the need for multiple alignment adjustments and enabling rapid installation and matching of the vehicle body door frame and sliding door, thus improving assembly adaptability and production efficiency. Attached Figure Description

[0022] Figure 1 A schematic diagram showing the assembly status of the sliding door limit device;

[0023] Figure 2 for Figure 1 Cross-sectional view of position AA in the middle;

[0024] Figure 3 This is a schematic diagram of the bump assembly structure;

[0025] Figure 4 This is a schematic diagram of the concave component.

[0026] Figure 5 This is a schematic diagram of the buffer component.

[0027] Figure 6 This is a schematic diagram of the structure of the first boss;

[0028] Figure 7 This is a schematic diagram of the second boss.

[0029] Figure 8 This is a schematic diagram of the third boss.

[0030] Figure 9 This is a schematic diagram of the concave base.

[0031] In the attached figures: 100, protrusion assembly; 110, protrusion base; 120, first protrusion; 121, plug plate; 130, second protrusion; 122, plug groove; 200, concave assembly; 210, concave base; 211, fixing block; 220, third protrusion; 221, mounting groove; 222, fixing groove; 230, groove; 300, buffer assembly; 310, slider; 311, clamping part; 312, connecting part; 313, through hole; 314, guide surface; 315, first clamping surface; 316, second clamping surface; 320, elastic element; 330, pin. Detailed Implementation

[0032] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0033] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0034] Example 1

[0035] This embodiment is a first embodiment of a sliding door limiting device, including a protrusion assembly 100 and a concave assembly 200. The protrusion assembly 100 includes a protrusion base 110, a first protrusion 120 protruding from the protrusion base 110, and a second protrusion 130 protruding from the first protrusion 120. The concave assembly 200 includes a concave base 210, a third protrusion 220 protruding from the concave base 210, and a groove 230 disposed in the third protrusion 220. The groove 230 is provided with a buffer assembly 300 that is slidably connected to the third protrusion 220. The second protrusion 130 can be engaged in the groove 230 and abuts against the buffer assembly 300.

[0036] In this embodiment, the sliding door limiting device comprises a protrusion assembly 100 consisting of a protrusion base 110, a first protrusion 120 protruding from the protrusion base 110, and a second protrusion 130 protruding from the first protrusion 120. By adjusting the relative position and protrusion angle of the first protrusion 120 and the second protrusion 130, the engaging position and fitting angle of the protrusions and concave blocks in different vehicle models can be accommodated, increasing versatility. The concave base 210, the third protrusion 220 protruding from the concave base 210, and the groove 230 inside the third protrusion 220 together constitute the concave assembly 200. The groove 230 is equipped with a sliding buffer assembly 300. When the sliding door is moved to the closed state, the second protrusion 130 engages in the groove 230. The buffer assembly 300 in the groove 230 abuts against the second protrusion 130, providing a stable clamping effect, so that the concave block assembly 200 and the protrusion assembly 100 always maintain close contact. By limiting the protrusion assembly 100 and the concave block assembly 200, uneven wear at the contact position of the concave block assembly 200 and the protrusion assembly 100 is avoided, eliminating knocking noises at the door's concave and convex positions when the vehicle passes through bumpy road sections.

[0037] like Figure 2 As shown, in this embodiment, the first boss 120 and the second boss 130 are not combined into a traditional U-shaped structure. Instead, the first boss 120 is set as an approximate inclined platform structure with one side higher and the other side lower. The cross-sectional shape of the first boss 120 is a right triangle, with the hypotenuse connected to the boss base 110. The central axis of the second boss 130 is perpendicular to the end face of the first boss 120, so that the axis of the second boss 130 forms a certain angle with the horizontal direction, rather than protruding directly in the horizontal direction, thus matching the contact angle between the door and the body frame when the door is closed. In the sliding door of the MPV model, the door and the body frame are usually not on the same straight line during the closing process, but are engaged at a certain angle. Therefore, the boss assembly 100, which is composed of the boss base 110, the first boss 120 and the second boss 130, must maintain a certain tilt angle to cooperate with the concave assembly 200 that engages from different angles.

[0038] Multiple sets of buffer components 300 are provided in the groove 230, and each set abuts against different end faces of the second boss 130. With multiple sets of buffer components 300 abutting against different end faces of the second boss 130, during vehicle bumps, regardless of the direction in which the boss component 100 moves in the groove 230, it will always remain in contact with the buffer component 300, thus maintaining a stable clamping and limiting effect throughout the entire life cycle of the vehicle body and preventing abnormal noises.

[0039] The buffer assembly 300 includes a slider 310 and an elastic element 320. A mounting groove 221 is provided in the third boss 220, and the elastic element 320 is disposed in the mounting groove 221. One end of the slider 310 abuts against the second boss 130, and the other end abuts against the elastic element 320. During installation, a certain preload is applied to compress the elastic element 320 within the mounting groove 221. When the second boss 130 engages with the groove 230, the slider 310, under the action of the elastic element 320, slides out of the mounting groove 221, maintaining contact with the second boss 130, thereby achieving stable positioning.

[0040] The slider 310 includes a clamping part 311 and multiple sets of connecting parts 312 connected to the clamping part 311. The connecting parts 312 abut against the elastic member 320. The clamping part 311 is used to fix the position of the second boss 130. The number of connecting parts 312 can be adjusted according to the size of the clamping part 311. The multiple sets of connecting parts 312 that abut against the elastic member 320 are used to drive the clamping part 311 to move, ensuring that the displacement of each part of the clamping part 311 is the same, the overall structure is stable, and tilting is avoided during movement.

[0041] like Figure 6 , Figure 7 As shown, the first boss 120 is provided with a connector plate 121, and the second boss 130 is provided with a connector groove 122, into which the connector plate 121 is inserted; Figure 8 , Figure 9 As shown, the third boss 220 is provided with multiple sets of fixing grooves 222, and the recessed base 210 is provided with a fixing block 211 that is detachably connected to the fixing grooves 222. The plug plate 121 cooperates with the plug grooves 122 to realize the detachable connection between the second boss 130 and the first boss 120; the cooperation between the fixing grooves 222 and the fixing blocks 211 realizes the detachable connection between the third boss 220 and the recessed assembly 200. Instead of being set as a one-piece molded structure, the boss assembly 100 and the recessed assembly 200 adopt a split structure, which allows the recessed base 210, the boss base 110 and the first boss 120 to be made of metal materials, improving their connection strength with the vehicle body structure, while the second boss 130 and the third boss 220 can be made of plastic material, covering the metal structure, making it easier to align and engage during use, and the overall structure is not easily damaged.

[0042] Example 2

[0043] This embodiment is a second embodiment of the sliding door limiting device. This embodiment is similar to the first embodiment, except that the buffer assembly 300 further includes a pin 330, and the connecting portion 312 has a through hole 313. The pin 330 passes through the through hole 313 and engages with the third boss 220. The engagement of the pin 330 through the through hole 313 with the third boss 220 prevents the slider 310 from disengaging from the third boss 220 when the vehicle is bumpy.

[0044] The diameter of the through hole 313 is larger than the diameter of the pin 330. The larger diameter of the through hole 313 allows the connecting part 312 to slide in the groove 230. By adjusting the diameter of the through hole 313, the stroke of the slider 310 can be controlled, thereby adapting to the mating requirements of different vehicle models.

[0045] The clamping part 311 includes a guide surface 314, a first clamping surface 315, and a second clamping surface 316. The two ends of the first clamping surface 315 are connected to the guide surface 314 and the second clamping surface 316, respectively. The guide surface 314 is located on the side away from the bottom of the groove 230, and both the guide surface 314 and the second clamping surface 316 are inclined to the first clamping surface 315. The guide surface 314 is located on the side away from the bottom of the groove 230 and close to the protrusion, and is inclined to the first clamping surface 315 to provide guidance for the second protrusion 130, so that the second protrusion 130 can be quickly inserted into the groove 230. The third clamping surface is inclined to the second clamping surface 316, so that the overall shape of the clamping part 311 fits the surface shape of the second protrusion, improving the fit between the clamping part 311 and the second protrusion 130.

[0046] The slider 310 is provided with multiple sets of parallel ribs. The multiple sets of ribs can reduce the contact area between the slider 310 and the second boss 130, thereby reducing friction, making it easier for the boss assembly 100 to engage with the concave assembly 200, and reducing wear during use, thus extending service life.

[0047] Example 3

[0048] This embodiment is a first embodiment of a car equipped with the sliding door limiting device, including a car body door frame, a car door and the above-mentioned sliding door limiting device, wherein the protrusion assembly 100 is connected to the car door and the concave assembly 200 is connected to the car body door frame; or the protrusion assembly 100 is connected to the car body door frame and the concave assembly 200 is connected to the car door.

[0049] In this embodiment, the automobile has a sliding door limiting mechanism between the door and the body door frame. This can be achieved by placing the protrusion assembly 100 on the door and the recessed assembly 200 on the body door frame, or by placing the protrusion assembly 100 on the body door frame and the recessed assembly 200 on the vehicle body. This completely conceals the sliding door limiting device, making the connection between the door and the body door frame appear simple and unobtrusive, thus improving the overall aesthetics. Simultaneously, it eliminates knocking noises from the protrusion and recessed areas when the vehicle travels over bumpy roads.

[0050] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0051] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A sliding door limiting device, characterized in that, The assembly includes a bump assembly (100) and a recess assembly (200). The bump assembly (100) includes a bump base (110), a first boss (120) protruding from the bump base (110), and a second boss (130) protruding from the first boss (120). The recess assembly (200) includes a recess base (210), a third boss (220) protruding from the recess base (210), and a groove (230) disposed in the third boss (220). A buffer assembly (300) is provided in the groove (230) and is slidably connected to the third boss (220). The second boss (130) can be engaged in the groove (230) and abut against the buffer assembly (300).

2. The sliding door limiting device according to claim 1, characterized in that, The buffer assembly (300) is provided in multiple sets in the groove (230) and abuts against different end faces of the second boss (130).

3. The sliding door limiting device according to claim 1, characterized in that, The buffer assembly (300) includes a slider (310) and an elastic element (320). The third boss (220) is provided with a mounting groove (221). The elastic element (320) is disposed in the mounting groove (221). One end of the slider (310) abuts against the second boss (130), and the other end abuts against the elastic element (320).

4. The sliding door limiting device according to claim 3, characterized in that, The slider (310) includes a clamping part (311) and multiple sets of connecting parts (312) connected to the clamping part (311), the connecting parts (312) abutting against the elastic member (320).

5. The sliding door limiting device according to claim 4, characterized in that, The buffer assembly (300) also includes a pin (330), and the connecting part (312) is provided with a through hole (313). The pin (330) passes through the through hole (313) and engages with the third boss (220).

6. The sliding door limiting device according to claim 5, characterized in that, The diameter of the through hole (313) is larger than the diameter of the pin (330).

7. The sliding door limiting device according to claim 4, characterized in that, The clamping part (311) includes a guide surface (314), a first clamping surface (315) and a second clamping surface (316). The first clamping surface (315) is connected to the guide surface (314) and the second clamping surface (316) at both ends. The guide surface (314) is disposed on the side away from the bottom of the groove (230). Both the guide surface (314) and the second clamping surface (316) are inclined to the first clamping surface (315).

8. The sliding door limiting device according to any one of claims 3 to 7, characterized in that, The slider (310) is provided with multiple sets of parallel ribs.

9. The sliding door limiting device according to any one of claims 1 to 7, characterized in that, The first boss (120) is provided with a plug plate (121), the second boss (130) is provided with a plug groove (122), the plug plate (121) is inserted into the plug groove (122), the third boss (220) is provided with multiple sets of fixing grooves (222), and the recessed base (210) is provided with a fixing block (211) that is detachably connected to the fixing groove (222).

10. A car, characterized in that, The device includes a vehicle body door frame, a vehicle door, and a sliding door limiting device as described in any one of claims 1 to 9, wherein the protrusion assembly (100) is connected to the vehicle door, and the concave assembly (200) is connected to the vehicle body door frame; or the protrusion assembly (100) is connected to the vehicle body door frame, and the concave assembly (200) is connected to the vehicle door.

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