Large-damping automotive hinge

Abstract

The present invention discloses a large-damping automotive hinge, comprising: a first hinge, a support plate is formed on one side of the first hinge, a first shaft hole is formed in the support plate, and a first hinge shaft is rotatably inserted in the first shaft hole; a hinge arm, the hinge arm has opposite first and second ends, a bushing is connected to the first end of the hinge arm, the bushing is rotatably sleeved on the first hinge shaft, and the thickness of the side wall of the bushing gradually increases along the circumferential direction of the bushing; a damping plate, elastically mounted on the support plate and pressing against the side wall of the bushing; and a second hinge, mounted on the second end of the hinge arm. The present invention solves the problem of the small torque of the existing automotive hinge.

Description

Technical Field

[0001] The present invention relates to the technical field of automotive hinges, and particularly to a large-damping automotive hinge. Background Art

[0002] When an automobile door is opened electrically, the method is that the door drives the door leaf installed at the door end to rotate. When the door is opened to a certain angle, the limit of the door leaf collides with the U-shaped connecting bracket, and the hinge door leaf stops rotating, and the door motor stops working. If the automobile door needs to be opened to a larger angle, manual opening is required, and under the action of the limiter, the door is opened to the maximum opening angle.

[0003] For existing automotive hinges, the hinge torque is in the range of 0 N·m to 5 N·m, and the torque is formed by the cooperation of the bushing and the pin shaft, and it is impossible to form a large torque. The torque of existing ordinary automotive hinges cannot be provided.

[0004] The information disclosed in this background art section is only intended to enhance the overall understanding of the present invention and should not be regarded as an admission or any form of suggestion that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Invention

[0005] To overcome the defects existing in the prior art, the present invention provides a large-damping automotive hinge to solve the problem of the small torque of existing automotive hinges.

[0006] To achieve the above object, a large-damping automotive hinge is provided, including:

[0007] A first hinge, a support plate is formed on one side of the first hinge, a first shaft hole is provided in the support plate, and a first hinge shaft is rotatably inserted in the first shaft hole;

[0008] A hinge arm having opposite first and second ends, a bushing is connected to the first end of the hinge arm, the bushing is rotatably sleeved on the first hinge shaft, and the thickness of the side wall of the bushing gradually increases along the circumferential direction of the bushing;

[0009] A damping plate is elastically mounted on the support plate and presses against the side wall of the bushing;

[0010] A second hinge is mounted on the second end of the hinge arm.

[0011] Further, an abutting surface that presses against the damping plate is provided on the outer side of the side wall of the bushing. The abutting surface includes a first arc segment and a second arc segment. The first arc segment and the second arc segment are arranged along the circumferential direction of the bushing. The second arc segment is connected to the first arc segment, and the fillet radius of the first arc segment is greater than the fillet radius of the second arc segment.

[0012] Further, the fillet radius of the first arc surface segment is 15 mm.

[0013] Further, the fillet radius of the second arc surface segment is 17 mm.

[0014] Further, the side wall is formed with a convex rib, the convex rib is arranged along the axial direction of the bushing, the second arc surface segment has a first side and a second side opposite to each other in the arc forming direction of the second arc surface segment, the first side of the second arc surface segment is connected to the first arc surface segment, and the convex rib is connected to the second side of the second arc surface segment.

[0015] Further, the width of the convex rib gradually decreases from the side of the convex rib close to the bushing to the side of the convex rib far from the bushing.

[0016] Further, one side surface of the convex rib close to the second arc surface segment is arranged along the tangent direction of the second side of the second arc surface segment.

[0017] Further, the damping plate is coated with a PDFE coating.

[0018] Further, the damping plate is elastically mounted on the first hinge by a spring.

[0019] Further, the spring is a helical spring, the first hinge is provided with a guide hole, the guide hole is coaxially arranged with the inner hole of the spring, a guide rod is slidably arranged in the guide hole and the inner hole, and the end of the guide rod is connected to the damping plate.

[0020] The beneficial effect of the present invention is that the torque of the large-damping automobile hinge of the present invention can be adjusted within an arbitrary range of 0 N·m to 50 N·m. The torque rotates together with the outer diameter of the second hinge (door leaf or body leaf) integrally connected with the bushing, so as to press against the damping plate elastically mounted on the first hinge (body leaf or door leaf). Since the outer diameter of the bushing is a variable-diameter structure, the damping of the damping plate is adjusted by the magnitude of the elastic thrust on the first hinge. The structure of the traditional ordinary hinge bushing determines that the achievable torque is relatively small. If the torque is larger, the compression amount of the bushing is insufficient and the bushing is damaged. For the large-damping automobile hinge torque of the present invention, the damping plate is elastically mounted on the first hinge, providing a greater torque for the hinge. Description of the Drawings

[0021] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objects and advantages of the present application will become more obvious:

[0022] Figure 1 It is a schematic structural diagram of the large-damping automobile hinge according to an embodiment of the present invention.

[0023] Figure 2 A cross-sectional view of the large-damping vehicle hinge according to an embodiment of the present invention.

[0024] Figure 3 A schematic view of the state where the damping plate presses against the first arc segment according to an embodiment of the present invention.

[0025] Figure 4 A schematic view of the state where the damping plate presses against the second arc segment according to an embodiment of the present invention.

[0026] Figure 5 A schematic view of the state where the damping plate presses against the side surface of the convex rib according to an embodiment of the present invention. Detailed implementation manners

[0027] The following further elaborates on the present application in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are merely for explaining the related invention and do not limit the invention. Additionally, it should be noted that for the sake of description, only the parts related to the invention are shown in the drawings.

[0028] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will elaborate on the present application in detail with reference to the drawings and embodiments.

[0029] Referring to Figures 1 to 5 As shown, the present invention provides a large-damping vehicle hinge, including: a first hinge 1, a hinge arm 2, a damping plate 3, and a second hinge 4.

[0030] Wherein, one side of the first hinge 1 forms a support plate 11. The support plate 11 is provided with a first shaft hole. A first hinge shaft 12 is rotatably inserted into the first shaft hole.

[0031] The hinge arm 2 has opposite first and second ends. A bushing 21 is connected to the first end of the hinge arm 2. The bushing 21 is rotatably sleeved on the first hinge shaft 12. The thickness of the side wall of the bushing 21 gradually increases along the circumferential direction of the bushing 21.

[0032] In this embodiment, the hinge arm is semicircular. Using a semicircular hinge arm can achieve an opening angle of 160 degrees.

[0033] The damping plate 3 is elastically installed on the support plate 11 and presses against the side wall of the bushing 21. The second hinge 4 is installed at the second end of the hinge arm 2.

[0034] The damping plate includes a base plate and a plastic layer. Specifically, the base plate is a low-alloy high-strength structural steel plate. After processing all the required dimensions of the base plate, an engineering plastic of PTFE (Poly tetrafluoroethylene) with self-lubricating function is sintered on the surface of the base plate sheet. The PTFE coating will produce elastic deformation under pressure, thereby generating damping.

[0035] Specifically, in this embodiment, the first hinge is vertically arranged. The first hinge has a first end and a second end opposite to each other in its length direction. The first end of the first hinge is installed on the vehicle body through a fastener. In addition, the first hinge also has a first side and a second side opposite to each other in its width direction. Support plates are respectively formed on the first side and the second side of the first hinge. The first shaft hole is arranged on the side of the support plate away from the first end of the first hinge. Both ends of the first hinge shaft are rotatably inserted into the first shaft holes on the support plates of the first side and the second side of the first hinge. The damping plate is arranged on the side of the support plate facing the first hinge shaft. The bushing is rotatably sleeved on the middle part of the first hinge shaft. The damping plate is elastically installed on the support plate and presses against the circumferential surface of the bushing. During the opening process of the vehicle door, the hinge arm is driven to rotate, and thus a large frictional force is generated between the damping plate and the bushing.

[0036] The torque of the large-damping vehicle hinge of the present invention can be adjusted within an arbitrary range of 0 N·m to 50 N·m. The torque rotates together with the outer diameter of the second hinge (door leaf or vehicle body leaf) integrated with the bushing, thereby pressing against the damping plate elastically installed on the first hinge (vehicle body leaf or door leaf). Since the outer diameter of the bushing is a variable-diameter structure, the damping of the damping plate is adjusted by the magnitude of the elastic thrust on the first hinge. The structure of the traditional ordinary hinge bushing determines that the achievable torque is relatively small. If the torque is larger, the compression amount of the bushing is insufficient and the bushing is damaged. For the large-damping vehicle hinge torque of the present invention, the first hinge elastically installs the damping plate, providing a larger torque for the hinge.

[0037] In this embodiment, the large-damping vehicle hinge of the present invention is used for an electric vehicle door, and the hinge arm is hinged to a bracket 22. The second hinge is hinged to the end of the hinge arm away from the first hinge. Specifically, the first hinge is installed on the vehicle body. The second hinge is installed on the vehicle door. The vehicle door is equipped with a motor. The motor is used to drive the hinge arm to rotate around the central axis of the first hinge shaft through the bracket 22.

[0038] Refer to Figures 3 to 5, the outer side of the side wall of the bushing 21 has a contact surface that presses against the damping plate 3. The contact surface includes a first arc segment a and a second arc segment b. The first arc segment a and the second arc segment b are respectively arc-shaped. The inner arc surfaces of the first arc segment a and the second arc segment b face the central axis of the bushing. The first arc segment a and the second arc segment b are arranged along the circumferential direction of the bushing 21. The second arc segment b is connected to the first arc segment a. The fillet radius of the first arc segment a is greater than the fillet radius of the second arc segment b.

[0039] Preferably, the fillet radius of the first arc segment a is 15 mm. The fillet radius of the second arc segment b is 17 mm.

[0040] The side wall is formed with a rib 211. The rib 211 is arranged along the axial direction of the bushing 21. The first arc segment a has a first side and a second side that are opposite in the arc-forming direction of the first arc segment a. The first side of the first arc segment a is adjacent to the first end of the hinge arm. The second arc segment b has a first side and a second side that are opposite in the arc-forming direction of the second arc segment b. The first side of the second arc segment b is connected to the second side of the first arc segment a. The rib 211 is connected to the second side of the second arc segment b.

[0041] In this embodiment, the width of the rib 211 gradually decreases from the side of the rib 211 close to the bushing 21 to the side of the rib 211 far from the bushing 21. Specifically, the cross-section of the rib is a triangular prism shape. The edges of the rib are arc-shaped.

[0042] One side surface c of the rib 211 close to the second arc segment b is arranged along the tangent direction of the second side of the second arc segment b.

[0043] As a preferred embodiment, the damping plate 3 is coated with a PDFE coating. Specifically, the surface of the damping plate is coated with a PDFE (polytetrafluoroethylene) coating, so as to achieve the functions of wear resistance and noise reduction.

[0044] As a preferred embodiment, the damping plate 3 is elastically mounted on the first hinge 1 through a spring 31.

[0045] In this embodiment, the spring 31 is a helical spring. The first hinge 1 is provided with a guide hole. The guide hole is coaxially arranged with the inner hole of the spring. A guide rod 32 is slidably arranged in the guide hole and the inner hole. The end of the guide rod 32 is connected to the damping plate 3.

[0046] In this embodiment, the damping plate is mounted on the first hinge through a spring. The damping plate is elastically mounted on the first hinge through multiple springs. The multiple springs are arranged in a matrix. According to the damping required by the hinge, calculate the pressure generated by each spring, and then calculate the diameter, wire diameter, pitch, etc. of the spring according to the magnitude of the pressure.

[0047] The above description is only a preferred embodiment of the present application and an explanation of the technical principles applied. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the technical features (but not limited to) disclosed in the present application that have similar functions.

Claims

1. A large-damping automotive hinge, characterized in that, Comprising: A first hinge, a support plate is formed on one side of the first hinge, a first shaft hole is provided in the support plate, and a first hinge shaft is rotatably inserted in the first shaft hole; A hinge arm, the hinge arm has opposite first and second ends, a bushing is connected to the first end of the hinge arm, the bushing is rotatably sleeved on the first hinge shaft, and the thickness of the side wall of the bushing gradually increases along the circumferential direction of the bushing; A damping plate, elastically mounted on the support plate and pressing against the side wall of the bushing; A second hinge, mounted on the second end of the hinge arm; An outer side of the side wall of the bushing has a contact surface that presses against the damping plate, the contact surface includes a first arc segment and a second arc segment, the first arc segment and the second arc segment are arranged along the circumferential direction of the bushing, the second arc segment is connected to the first arc segment, and the fillet radius of the first arc segment is greater than the fillet radius of the second arc segment.

2. The large-damping automotive hinge according to claim 1, wherein The fillet radius of the first arc segment is 15 mm.

3. The large-damping vehicle hinge according to claim 1, characterized in that, The fillet radius of the second arc segment is 17 mm.

4. The large-damping automotive hinge according to claim 1, wherein The side wall is formed with a rib, the rib is arranged along the axial direction of the bushing, the second arc segment has a first side and a second side opposite to each other in the arc forming direction of the second arc segment, the first side of the second arc segment is connected to the first arc segment, and the rib is connected to the second side of the second arc segment.

5. The large-damping automotive hinge according to claim 4, characterized in that, The width of the rib gradually decreases from the side of the rib close to the bushing to the side of the rib far from the bushing.

6. The large-damping automotive hinge according to claim 5, characterized in that, One side surface of the rib close to the second arc segment is arranged along the tangent direction of the second side of the second arc segment.

7. The large-damping automotive hinge according to claim 1, characterized in that, The damping plate is coated with a PDFE coating.

8. The large-damping automotive hinge according to claim 1, characterized in that, The damping plate is elastically mounted on the first hinge by a spring.

9. The large-damping automotive hinge according to claim 8, wherein, The spring is a helical spring, a guide hole is provided in the first hinge, the guide hole is coaxially arranged with the inner hole of the spring, and a guide rod is slidably arranged in the guide hole and the inner hole, and an end of the guide rod is connected to the damping plate.

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