Limiting arm and vehicle door limiter

Abstract

The utility model relates to the technical field of vehicle door limiting, in particular to a limiting arm which comprises a long-strip-shaped limiting rod, a connecting hole is formed in one end of the limiting rod, a limiting part is arranged at the other end of the limiting rod, a plurality of protruding parts are arranged on the end face, located on one side of the limiting rod, of the limiting part, and groove parts are formed between the protruding parts. The utility model further provides a car door limiting stopper which comprises an installation base, a limiting stopper box and the limiting arm, one end of the limiting rod penetrates through a via hole in the limiting stopper box to be connected with the installation base, the limiting portion limits the stroke of the limiting stopper box, a buffering cushion is arranged on the limiting stopper box, and the limiting arm is arranged on the buffering cushion. And the buffer pad is arranged on one side of the limiting part. The utility model provides a limiting arm and a vehicle door limiter, which can eliminate grease adhesion sound generated when a vehicle door is opened to the maximum angle and improve the door opening comfort of a driver and passengers.

Description

Technical Field

[0001] This utility model relates to the field of vehicle door limiting technology, and in particular to a limiting arm and a vehicle door limiter. Background Technology

[0002] The main function of a car door limiter is to restrict the opening angle of the door. This limits the maximum opening angle while also allowing the door to remain open for passengers, such as in windy conditions or when the car is parked on a slope. In practice, the limit arm is coated with lubricant. When the door opens to its maximum angle, the limit arm impacts the buffer pad on the limiter, causing lubricant to spill out. This spilled lubricant gets stuck on the contact surface between the limit arm and the buffer pad, producing a sticky noise when the door is opened, which can be uncomfortable for passengers. However, without lubricant, the door would open and close unevenly, feeling uncomfortable and reducing passenger comfort. Utility Model Content

[0003] In view of the grease sticking and abnormal noise in the current limiting arm, this utility model provides a limiting arm and a door limiter, which can eliminate the grease sticking noise generated when the door is opened to the maximum angle and improve the opening comfort of the driver and passengers.

[0004] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions:

[0005] A limiting arm includes a long, narrow limiting rod. One end of the limiting rod is provided with a connecting hole, and the other end is provided with a limiting part. The limiting part is provided with a plurality of protrusions on the end face of one side of the limiting rod, and the protrusions form a groove between each other.

[0006] According to one aspect of the present invention, the limiting rod is provided with a stop groove.

[0007] According to one aspect of the present invention, the cross-sectional area of ​​the limiting portion is larger than the cross-sectional area of ​​the limiting rod.

[0008] According to one aspect of the present invention, the protrusion is striped in shape.

[0009] According to one aspect of the present invention, the outer surface of the limiting arm is provided with a plastic coating layer.

[0010] According to one aspect of the present invention, a recessed groove is provided between the limiting rod and the limiting part.

[0011] A door limiter includes a mounting base, a limiter box, and a limiter arm. The limiter arm includes a long, narrow limit rod. One end of the limit rod passes through a hole in the limiter box and connects to the mounting base. The other end of the limit rod is provided with a limit portion that restricts the travel of the limiter box. A buffer pad is provided on the limiter box and is located on one side of the limit portion. The end face of the limit portion on one side of the limiter box has several protrusions that form a groove between the protrusions.

[0012] According to one aspect of this utility model, the limiting rod and the mounting base are connected by a stepped pin.

[0013] According to one aspect of this utility model, the cushioning pad is made of rubber material.

[0014] According to one aspect of the present invention, the outer surface of the buffer pad is provided with textured protrusions, which do not engage with the groove portion.

[0015] The advantages of this utility model are as follows: The end face of the limiting part is provided with a protrusion and a groove. The groove can accommodate overflowing lubricating grease, effectively reducing the contact area between the limiting arm and the buffer pad, thereby eliminating noise caused by grease adhesion and significantly improving the comfort of passengers when opening the door. The surface of the limiting arm is coated with a plastic layer, which can reduce the friction between the limiting arm and the limiter box to a certain extent, reducing component wear and improving the appearance of the limiting arm. The limiting arm and the mounting base are connected by a stepped pin, ensuring a high degree of coaxiality between the mounting base and the limiting arm, effectively preventing relative misalignment or wobbling during operation. It also facilitates installation and disassembly, improving maintenance convenience. This utility model provides a limiting arm and door limiter that can eliminate the grease adhesion noise generated when the door is opened to its maximum angle, improving the comfort of passengers when opening the door. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of a limiting arm according to the present invention;

[0018] Figure 2 This is a structural diagram of the limiting part of a limiting arm according to the present invention and a cross-sectional view of plane AA;

[0019] Figure 3 This is a schematic diagram of the installation of a door limiter according to the present invention;

[0020] Figure 4 This is a partially enlarged view of a limiting arm according to the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of a door limiter according to the present invention.

[0022] The names corresponding to the serial numbers in the diagram are as follows:

[0023] 1. Limiter box; 2. Mounting base; 3. Stepped pin; 4. Limiting arm; 41. Limiting part; 42. Protrusion; 43. Groove; 44. Limiting rod; 45. Connecting hole; 46. Recessed groove; 47. Gear slot; 5. Buffer pad; 6. Door; 7. Body. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing this application and for 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, they should not be construed as limitations on this utility model. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0027] Example 1

[0028] like Figure 1 , Figure 2 ,and Figure 4 As shown, a limiting arm is mainly used in vehicle door limiters, playing a crucial role in ensuring the normal opening and closing and positioning functions of the vehicle door. It includes a long, narrow limiting rod 44, one end of which has a connecting hole 45, facilitating a precise connection between the limiting rod 44 and the mounting base 2 of the limiter. The other end of the limiting rod 44 has a limiting portion 41, with several protrusions 42 on one side of the limiting rod 44, forming a groove 43 between the protrusions 42. The protrusions 42 can be wavy, striped, or dotted, etc. Preferably, striped protrusions are used, evenly distributed on the end face of the limiting portion 41. In practical applications, the groove 43 can accommodate overflowing lubricating grease, effectively reducing the contact area between the limiting portion 41 of the limiting arm and the buffer pad, thereby eliminating noise caused by grease adhesion and significantly improving the comfort of passengers when opening the vehicle door.

[0029] In this embodiment, the limiting rod 44 is provided with a stop groove 47. Preferably, the stop groove 47 is provided on the limiting rod 44 at equal intervals. The setting of the stop groove 47 enables the door to stably maintain different opening angles when it is opened.

[0030] In this embodiment, the cross-sectional area of ​​the limiting part 41 is larger than that of the limiting rod 44. When the door is opened, the limiting part can withstand a large impact force, ensuring that the door can be accurately limited and controlled.

[0031] In this embodiment, the limiting arm is generally made of a high-strength, wear-resistant metal material, such as alloy steel. Preferably, the surface of the limiting arm is provided with a plastic coating layer made of PA material. PA material has good self-lubricating and wear-resistant properties, which can not only reduce the friction between the limiting arm and the limiter box 1 to a certain extent, reducing component wear, but also improve the appearance and texture of the limiting arm. At the same time, through special surface treatment and plastic coating process, it is ensured that the PA plastic coating layer is tightly bonded to the metal limiting arm, avoiding detachment and effectively extending the service life of the limiting arm.

[0032] In this embodiment, a recessed groove 46 is provided between the limiting rod 44 and the limiting part 41.

[0033] The beneficial effects of this embodiment are as follows: The end face of the limiting part 41 is provided with a protrusion 42 and a groove 43. The groove 43 can accommodate overflowing lubricating grease, effectively reducing the contact area between the limiting part 41 of the limiting arm and the buffer pad, thereby eliminating noise caused by grease adhesion and significantly improving the comfort of passengers when opening the door. The plastic coating on the surface of the limiting arm can reduce the friction between the limiting arm and the limiting device box 1 to a certain extent, reducing component wear and improving the appearance and texture of the limiting arm.

[0034] Example 2

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a door limiter includes a mounting base 2, a limiter box 1, and a limiter arm 4. The mounting base 2 is fixed to the sheet metal of the vehicle body 7. The limiter box 1 is installed on the door 6. The limiter arm 4 includes a long, narrow limiter rod 44. One end of the limiter rod 44 passes through a hole in the limiter box 1 and connects to the mounting base 2. The other end of the limiter rod 44 is provided with a limiter portion 41, which limits the travel of the limiter box 1. A buffer pad 5 is provided on the limiter box 1. The buffer pad 5 is located on one side of the limiter portion 41. The end face of the limiter portion 41 located on one side of the limiter box 1 is provided with a plurality of protrusions 42, and grooves 43 are formed between the protrusions 42. The protrusion 42 can be wavy, striped, dotted, or other shapes. Preferably, it is striped and evenly distributed on the end face of the limiting part 41. In practical applications, the groove 43 can accommodate the overflowing lubricating grease, effectively reducing the contact area between the limiting part 41 of the limiting arm 4 and the buffer pad 5, thereby eliminating the noise caused by grease adhesion and significantly improving the comfort of the driver and passengers when opening the door.

[0036] In this embodiment, the mounting base 2 is provided with a step pin 3 connecting the limiting rod 44 to the mounting base 2. The limiting arm 4 is provided with a connecting hole 45, and the mounting base 2 is provided with a matching pin hole. The step pin 3 can pass through the pin hole and the connecting hole 45 to movably connect the limiting arm 4 to the mounting base 2, that is, the limiting arm 2 can rotate around the step pin 3. The step pin 3 adopts a stepped structure, which can precisely match the holes on the mounting base 2 and the limiting arm 4, so that the mounting base 2 and the limiting arm 4 maintain a high degree of coaxiality, effectively preventing relative offset or shaking during operation. At the same time, it facilitates installation and disassembly, improving the convenience of maintenance.

[0037] In this embodiment, the limiting rod 44 is provided with a stop groove 47. Preferably, the stop groove 47 is provided on the limiting rod 44 at equal intervals. The setting of the stop groove 47 enables the door to stably maintain different opening angles when it is opened.

[0038] In this embodiment, the buffer pad 5 is made of a highly elastic, wear-resistant rubber material, such as EPDM rubber. The buffer pad 5 can both absorb the impact force of the buffer box and ensure a certain degree of elastic recovery. Preferably, the buffer pad 5 can also be provided with some textured protrusions, which can be wavy or striped, etc. It is worth noting that it is necessary to ensure that the textured protrusions of the buffer pad 5 do not get stuck in the groove 43, and that the groove 43 can accommodate the overflowing lubricating grease. Preferably, the buffer pad 5 also uses a striped texture, and the direction of the striped texture is perpendicular to the direction of the striped texture of the protrusion 42. The textured protrusions can increase friction, prevent the limiter cover from sliding during impact, and further disperse the impact force, reducing the generation of abnormal noise.

[0039] In this embodiment, the cross-sectional area of ​​the limiting rod 44 is smaller than the cross-sectional area of ​​the limiting part 41.

[0040] In this embodiment, the limiting arm 4 is generally made of a high-strength, wear-resistant metal material, such as alloy steel. Preferably, the surface of the limiting arm 4 is provided with a plastic coating layer made of PA material. PA material has good self-lubricating and wear-resistant properties, which can not only reduce the friction between the limiting arm 4 and the limiter box 1 to a certain extent, reducing component wear, but also improve the appearance and texture of the limiting arm 4. At the same time, through special surface treatment and plastic coating process, it is ensured that the PA plastic coating layer is tightly bonded to the metal limiting arm 4, avoiding detachment and effectively extending the service life of the limiting arm 4.

[0041] In this embodiment, a recessed groove 46 is provided between the limiting rod 44 and the limiting part 41.

[0042] The working principle or operating procedure in this implementation is as follows: When the driver or passenger opens the car door, the limiter box 1 moves along the limiter arm 4. When the car door is opened to its maximum angle, the limiter box 1 reaches the limiter part 41 of the limiter arm 4, and the buffer pad 5 on the limiter box 1 contacts the end face of the limiter part 41, thereby preventing further movement of the limiter box 1. The function of the buffer pad 5 is to absorb the impact force when opening the door. The end face of the limiter part 41 is designed with protrusions 42, and these protrusions form a groove 43. The function of the groove 43 is to accommodate excess lubricating grease. By reducing the contact area between the limiter part 41 of the limiter arm 4 and the buffer pad 5, noise caused by grease adhesion is effectively avoided, thereby improving the comfort of the driver or passenger when opening the car door.

[0043] The beneficial effects of this embodiment are as follows: The end face of the limiting part 41 is provided with a protrusion 42 and a groove 43. The groove 43 can accommodate overflowing lubricating grease, effectively reducing the contact area between the limiting part 41 of the limiting arm 4 and the buffer pad 5, thereby eliminating noise caused by grease adhesion and significantly improving the comfort of passengers when opening the door. The surface of the limiting arm 4 is provided with a plastic coating, which can reduce the friction between the limiting arm 4 and the limiter box 1 to a certain extent, reducing component wear and improving the appearance of the limiting arm. The limiting arm 4 and the mounting base 2 are connected by a stepped pin 3, ensuring a high degree of coaxiality between the mounting base 2 and the limiting arm 4, effectively preventing relative offset or shaking during operation. This also facilitates installation and disassembly, improving maintenance convenience.

[0044] The advantages of this utility model are as follows: The end face of the limiting part is provided with a protrusion and a groove. The groove can accommodate overflowing lubricating grease, effectively reducing the contact area between the limiting arm and the buffer pad, thereby eliminating noise caused by grease adhesion and significantly improving the comfort of passengers when opening the door. The surface of the limiting arm is coated with a plastic layer, which can reduce the friction between the limiting arm and the limiter box to a certain extent, reducing component wear and improving the appearance of the limiting arm. The limiting arm and the mounting base are connected by a stepped pin, ensuring a high degree of coaxiality between the mounting base and the limiting arm, effectively preventing relative misalignment or wobbling during operation. It also facilitates installation and disassembly, improving maintenance convenience. This utility model provides a limiting arm and door limiter that can eliminate the grease adhesion noise generated when the door is opened to its maximum angle, improving the comfort of passengers when opening the door.

[0045] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A limiting arm, comprising a long, narrow limiting rod (44), characterized in that, One end of the limiting rod (44) is provided with a connecting hole (45), and the other end is provided with a limiting part (41). The limiting part (41) is provided with a plurality of protrusions (42) on the end face of the limiting rod (44) on one side, and a groove (43) is formed between the protrusions (42).

2. The limiting arm according to claim 1, characterized in that, The limiting rod (44) is provided with a stop groove (47).

3. The limiting arm according to claim 1, characterized in that, The cross-sectional area of ​​the limiting part (41) is greater than that of the limiting rod (44).

4. The limiting arm according to claim 1, characterized in that, The protrusion (42) is striped.

5. The limiting arm according to claim 1, characterized in that, The outer surface of the limiting arm (4) is provided with a plastic coating layer.

6. The limiting arm according to claim 1, characterized in that, A recessed groove (46) is provided between the limiting rod (44) and the limiting part (41).

7. A door limiter, comprising a mounting base (2) and a limiter box (1), characterized in that, It also includes a limiting arm (4) as described in any one of claims 1 to 6, one end of the limiting rod (44) passing through a through hole on the limiting device box (1) and connected to the mounting base (2), the limiting part (41) restricting the travel of the limiting device box (1), and a buffer pad (5) provided on the limiting device box (1), the buffer pad (5) being located on one side of the limiting part (41).

8. The door limiter according to claim 7, characterized in that, The limiting rod (44) is connected to the mounting base (2) via a stepped pin (3).

9. The door limiter according to claim 7, characterized in that, The cushioning pad (5) is made of rubber material.

10. The door limiter according to claim 7, characterized in that, The outer surface of the buffer pad (5) is provided with textured protrusions, which do not get stuck in the groove.

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