Vehicle door limiter with excellent noise reduction effect

Abstract

The utility model discloses a car door stopper with excellent noise reduction effect, which comprises a limiting arm, a limiting sliding block is arranged on one side of the limiting arm, a sliding cavity is arranged in the limiting sliding block, one side of the sliding cavity close to the limiting arm is of an opening structure, and a pin roller is arranged in the sliding cavity. And the contact area between the sliding structure and the limiting arm is small.

Description

Technical Field

[0001] The utility model relates to the technical field of automobiles, in particular to a door stopper with excellent noise reduction effect. Background Art

[0002] A door stopper is a precision device installed on a vehicle door. Its primary function is to control the door's opening range, preventing it from opening excessively and thus protecting the door and the vehicle body. By setting a certain limiting force, it prevents the door from opening beyond a set range and ensures it closes completely, thus preventing safety hazards caused by incomplete door closure. The operating principle of a door stopper is relatively simple yet effective. It typically consists of a stopper bracket, a stopper box, and a stopper arm. The stopper bracket is securely fastened to the vehicle body frame with mounting bolts, while the stopper box is securely connected to the door hinge with two screws. When the door is opened, the stopper box moves along the path of the stopper arm, limiting the door's opening range through the set friction and limiting force. Low noise levels are a key feature of door stoppers.

[0003] For example, the Chinese patent "Door Limiter and Automobile" with publication number CN206487276U includes a limiter housing for connecting to a vehicle door, wherein two liquid rubber sliders are provided in the limiter housing, a limit arm is sandwiched between the two liquid rubber sliders, and the limit arm passes through the limiter housing, the liquid rubber slider includes an outer shell, a support portion made of liquid rubber is provided in the outer shell, and at least one liquid filling nozzle is provided on the outer shell, the limiter housing includes: a cover plate and a box body with an opening, the box body has a flange extending outward, the cover plate covers the opening and is fixedly connected to the flange, a nylon layer is provided on the outer side of the limit arm, a plurality of grooves are provided on the nylon layer, a first end of the limit arm is fixedly connected to a mounting bracket, the mounting bracket is used to connect to a vehicle body, the mounting bracket includes two side walls and a bottom wall connected between the two side walls, the two side walls are used to connect to the limit arm, the bottom wall is used to connect to the vehicle body, and a stop portion is provided at the second end of the limit arm away from the first end.

[0004] Although the above-mentioned existing technology can achieve the limit of the car door, in actual use, on the one hand, the limiter is prone to generate noise. When the limiter is working, the mutual squeezing between the machines will produce a certain amount of noise, which affects the user experience of the limiter. On the other hand, the contact area between the sliding structure and the limit arm is small, which causes the stress concentration at the contact point between the limit arm plastic coating and the ball, resulting in the limit arm plastic coating prone to cracking. Therefore, it does not meet the existing needs. In this regard, we propose a car door limiter with excellent noise reduction effect. Utility Model Content

[0005] The purpose of the present invention is to provide a vehicle door stopper with excellent noise reduction effect, so as to solve the problems in the above background technology that the stopper is prone to generate noise and the contact area between the sliding structure and the stopper arm is small.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a vehicle door limiter with excellent noise reduction effect, comprising a limit arm, a limit slider is provided on one side of the limit arm, a sliding cavity is provided inside the limit slider, the sliding cavity is an open structure on the side close to the limit arm, and a roller is provided inside the sliding cavity.

[0007] Preferably, a limiting groove is provided on the outside of the limiting arm, and the inner wall of the limiting groove contacts the roller.

[0008] Preferably, a pouring hole is provided inside the limiting arm, the pouring hole is a through-type structure, and the pouring hole corresponds to the position of the roller.

[0009] Preferably, the sliding cavity is provided with five pouring grooves on the outside of the roller, the pouring grooves are open structures, and the pouring grooves are equidistantly distributed.

[0010] Preferably, the sliding cavity is located at an inner middle position outside the roller and has two reinforcement pads fixedly provided thereon. The reinforcement pads are symmetrically arranged and contact the outer wall of the roller.

[0011] Preferably, the limit sliding block is provided with limit plates at the front and rear ends outside the limit arm, the limit plates cooperate with the limit arm for limiting, and the limit plates and the limit sliding block are an integrated structure.

[0012] Preferably, fixing holes are provided at the upper and lower ends of the interior of the limiting sliding block, and the fixing holes are of a through-type structure.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model can avoid sliding friction between the limit arm and the limit slider through the sliding cavity and the limit groove. When the limiter is installed, the limit slider is first fixed to the vehicle body frame, and then the roller is placed in the sliding cavity. At this time, the roller slides and cooperates with the inner wall of the sliding cavity and the reinforcing pad. Finally, the limit arm is aligned with the limit plates on both sides of the limit slider and the limit arm is pushed to make the limit groove on the limit arm contact with the roller, and the roller is embedded in the limit slider. The roller cooperates with the limit arm, avoiding the sliding friction generated by the direct contact between the limit slider and the limit arm, so that the roller rolls in the limit slider and the roller also rolls relative to the limit arm. The sliding friction is replaced by rolling friction, thereby avoiding the noise caused by sliding friction.

[0015] 2. The present invention can increase the contact area between the roller and the limit arm by providing a roller. When the limiter is installed, the roller contacts the limit groove on the limit arm. The roller increases the contact area with the limit arm, avoiding the defect of the limit arm being prone to cracking due to the high stress generated by the existing ball-type rolling friction.

[0016] 3. The utility model allows lubricating oil to enter the interior of the sliding cavity through the pouring hole and the pouring groove. After the limiter is installed, the lubricating oil is squeezed in through the pouring hole. The lubricating oil after entering the pouring hole flows to between the limit arm and the roller, and the friction between the limit arm and the roller is reduced by the lubricating oil. The lubricating oil is then squeezed into the sliding cavity through the pouring groove, and the lubricating oil fills the sliding cavity through the pouring groove, reducing the friction between the inner wall of the sliding cavity and the contact part of the roller, thereby reducing the noise generated by the friction between the roller and the limit arm and the limit slider respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure assembly of the utility model;

[0019] Figure 3 This is a schematic diagram of the assembly structure of the limit slider of the utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the limit slider of the utility model.

[0021] In the figure: 1. Limiting arm; 2. Pouring hole; 3. Limiting slider; 4. Fixing hole; 5. Limiting plate; 6. Sliding cavity; 7. Pouring groove; 8. Reinforcement pad; 9. Roller; 10. Limiting groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] See also Figure 1-4 The utility model provides an embodiment: a door limiter with excellent noise reduction effect, including a limit arm 1, a limit slider 3 is provided on one side of the limit arm 1, a sliding cavity 6 is provided inside the limit slider 3, and the sliding cavity 6 is an open structure on the side close to the limit arm 1, and a roller 9 is provided inside the sliding cavity 6.

[0024] During use, when installing the limiter, first fix the limit slider 3 on the vehicle body frame, and then put the roller 9 into the sliding cavity 6. At this time, the roller 9 slides with the inner wall of the sliding cavity 6 and the reinforcing pad 8. Finally, align the limit arm 1 with the limit plates 5 on both sides of the limit slider 3 and push the limit arm 1 so that the limit groove 10 on the limit arm 1 contacts the roller 9, and embed the roller 9 in the limit slider 3. The roller 9 cooperates with the limit arm 1 to avoid the sliding friction generated by the direct contact between the limit slider 3 and the limit arm 1, so that the roller 9 rolls in the limit slider 3, and at the same time, the roller 9 also rolls relative to the limit arm 1, replacing the sliding friction with the rolling friction.

[0025] See also Figure 2 A limiting groove 10 is provided on the outside of the limiting arm 1 , and the inner wall of the limiting groove 10 contacts the roller 9 , so that the roller 9 rolling on the limiting arm 1 can be limited by the limiting groove 10 .

[0026] See also Figure 1 and Figure 2 A filling hole 2 is provided inside the limit arm 1. The filling hole 2 is a through-type structure, and the filling hole 2 corresponds to the position of the roller 9, so that the lubricating oil can be poured between the limit arm 1 and the roller 9 through the filling hole 2, thereby reducing the friction between the roller 9 and the limit arm 1.

[0027] See also Figure 4 The sliding cavity 6 is located outside the roller 9 and is provided with five pouring grooves 7. The pouring grooves 7 are open structures and are evenly distributed, which makes it easy to pour lubricating oil into the sliding cavity 6 through the pouring grooves 7, thereby reducing the friction between the roller 9 and the sliding cavity 6.

[0028] See also Figure 3 and Figure 4 Two reinforcing pads 8 are fixedly provided at the inner middle position of the sliding cavity 6 outside the roller 9. The reinforcing pads 8 are symmetrically arranged and contact the outer wall of the roller 9, so that the reinforcing pads 8 can reduce the wear between the roller 9 and the sliding cavity 6, thereby extending the service life of the limit slider 3.

[0029] See also Figure 1 and Figure 4 The limit slider 3 is located on the front and rear ends of the outer side of the limit arm 1 and is provided with a limit plate 5. The limit plate 5 cooperates with the limit arm 1 to limit the position, and the limit plate 5 and the limit slider 3 are an integrated structure, which makes it convenient to limit the limit arm 1 through the limit plate 5.

[0030] See also Figure 1 and Figure 3 The upper and lower ends of the limiting slider 3 are both provided with fixing holes 4, and the fixing holes 4 are a through-type structure, which makes it easy to fix the limiting slider 3 on the vehicle body frame through the fixing holes 4 and bolts.

[0031] Working principle: When the limiter is installed, the roller 9 contacts the limit groove 10 on the limit arm 1, and the contact area between the limit arm 1 is increased through the roller 9. After the limiter is installed, the lubricating oil is squeezed in through the filling hole 2. After entering the filling hole 2, the lubricating oil flows between the limit arm 1 and the roller 9. The friction force of the contact part between the limit arm 1 and the roller 9 is reduced by the lubricating oil, and then the lubricating oil is squeezed into the sliding cavity 6 through the filling groove 7, and the sliding cavity 6 is filled with the lubricating oil through the filling groove 7.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A door stopper with excellent noise reduction effect, comprising a stopper arm (1), characterized in that: A limiting slider (3) is provided on one side of the limiting arm (1), a sliding cavity (6) is provided inside the limiting slider (3), a side of the sliding cavity (6) close to the limiting arm (1) is an open structure, and a roller (9) is provided inside the sliding cavity (6).

2. A door stopper with excellent noise reduction effect according to claim 1, characterized in that: A limiting groove (10) is provided on the outside of the limiting arm (1), and the inner wall of the limiting groove (10) is in contact with the roller (9).

3. A door stopper with excellent noise reduction effect according to claim 2, characterized in that: A pouring hole (2) is provided inside the limiting arm (1), the pouring hole (2) is a through-type structure, and the pouring hole (2) corresponds to the position of the roller (9).

4. A vehicle door stopper with excellent noise reduction effect according to claim 3, characterized in that: The sliding cavity (6) is provided with five pouring grooves (7) located outside the roller (9). The pouring grooves (7) are open structures and are distributed at equal intervals.

5. The vehicle door stopper with excellent noise reduction effect according to claim 4, characterized in that: The sliding cavity (6) is located at an inner middle position outside the roller (9) and is fixed with two reinforcement pads (8). The reinforcement pads (8) are symmetrically arranged and contact the outer wall of the roller (9).

6. A vehicle door stopper with excellent noise reduction effect according to claim 5, characterized in that: The limiting slide block (3) is provided with limiting plates (5) at the front and rear ends outside the limiting arm (1); the limiting plates (5) and the limiting arm (1) are in limiting cooperation, and the limiting plates (5) and the limiting slide block (3) are an integrated structure.

7. A vehicle door stopper with excellent noise reduction effect according to claim 6, characterized in that: The upper and lower ends of the interior of the limiting sliding block (3) are both provided with fixing holes (4), and the fixing holes (4) are of a through-type structure.

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