A folding bumper block for a vehicle door

Abstract

The application relates to the technical field of automobile door buffer blocks, in particular to a folding buffer block for automobile door damping, which comprises a buffer block body, a sliding rod is slidably connected to the middle of the upper part of the buffer block body, a damping layer is arranged on the outer side of the sliding rod, a top block is fixedly connected to the top end of the sliding rod, a circular plate is fixedly connected to the bottom end of the sliding rod, a compression spring is fixedly connected to the outer side of the bottom of the circular plate, and a fixing rod is fixedly connected to the middle of the bottom end of the sliding rod; through the design cooperation of the top block and the fixing rod, the device can not only reduce the probability of the buffer block body falling off after being impacted when the door is closed, but also can provide an additional buffer area through the expansion of the first expansion plate and the second expansion plate into the door, so that the impact force when the door is closed can be more effectively absorbed and dispersed, the damage to the door and the vehicle body is reduced, the stress concentration of the buffer block body can be reduced, and the service life of the buffer block body is prolonged.

Description

Technical Field

[0001] This invention relates to the field of automotive door buffer block technology, and more particularly to a foldable buffer block for automotive door shock absorption. Background Technology

[0002] Foldable buffer blocks for shock absorption in car doors typically refer to a component used in car door hinge systems.

[0003] The function of a folding door bumper is to absorb impact when the door closes, reduce vibration and noise, and protect the door and body structure from damage. Its specific characteristics are as follows: Folding design: This type of bumper is usually foldable, so it can compress to absorb energy when the door is closed and return to its original shape when the door is opened; Installation location: It is usually installed inside or near the door hinge. Some designs may also install the bumper at the edge where the door meets the body.

[0004] When using existing folding buffer blocks, adhesive is usually applied to the end of the buffer block that contacts the inside of the car door. The buffer block is then inserted into a pre-drilled hole in the car door, and the adhesive holds the buffer block in place. However, the adhesive has a limited lifespan. Prolonged use or forceful slamming of the car door can damage the buffer block and increase the probability that it will detach from the car door.

[0005] To address the aforementioned issues, this application proposes a foldable buffer block for shock absorption in automobile doors. Summary of the Invention

[0006] To address the problems mentioned in the background section, this invention provides a foldable buffer block for automotive doors, which reduces the probability of the buffer block body detaching after being impacted when the door is closed.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a foldable buffer block for shock absorption in automobile doors, comprising a buffer block body, a sliding rod slidably connected to the upper middle part of the buffer block body, a damping layer provided on the outer side of the sliding rod, a top block fixedly connected to the top of the sliding rod, a circular plate fixedly connected to the outer side of the bottom of the sliding rod, a compression spring fixedly connected to the outer side of the bottom of the circular plate, a fixed rod fixedly connected to the middle of the bottom of the sliding rod, a central shaft fixedly connected to the end of the fixed rod away from the sliding rod, a first fixed shaft rotatably connected to the left end face of the central shaft, a first rotating rod fixedly connected to the front end face of the first fixed shaft, a first expansion plate rotatably connected to the end of the first rotating rod away from the first fixed shaft, a second fixed shaft rotatably connected to the right end face of the central shaft, a second rotating rod fixedly connected to the rear end face of the second fixed shaft, a second expansion plate rotatably connected to the end of the second rotating rod away from the second fixed shaft, and rubber layers fixedly connected to the top of both the first and second expansion plates.

[0008] As a preferred embodiment of the foldable buffer block for shock absorption in automobile doors according to the present invention, the outer side of the damping layer contacts the upper middle of the inner side of the buffer block body, the inner middle of the circular plate is fixedly connected to the upper outer side of the fixing rod, the upper middle of the inner side of the buffer block body is slidably connected to the outer side of the fixing rod, the outer sides of the first expansion plate and the second expansion plate are slidably connected to the lower front and rear sides of the inner side of the buffer block body, and the upper outer side of the rubber layer is slidably connected to the lower front and rear sides of the inner side of the buffer block body. This not only reduces the probability of the buffer block body falling off after being impacted when the car door is closed, but also allows the first expansion plate and the second expansion plate to expand into the car door to provide an additional buffer area, thereby more effectively absorbing and dispersing the impact force when the door is closed, and reducing damage to the car door and body.

[0009] As a preferred embodiment of the foldable buffer block for shock absorption in automobile doors according to the present invention, the lower outer side of the buffer block body is located inside the automobile door, and the upper outer side and the top block of the buffer block body are exposed outside the automobile door. The bottom of the buffer block body is uniformly coated with adhesive, and the bottom of the buffer block body is adhered to the inside of the automobile door, allowing the bottom of the buffer block body to be inserted into the inside of the automobile door. Whenever the automobile door is closed, when the top block of the buffer block body contacts the frame, the first expansion plate and the second expansion plate expand outward, which can reduce the local stress concentration of the buffer block body, thereby extending the service life of the buffer block body.

[0010] As a preferred embodiment of the foldable buffer block for shock absorption in automobile doors according to the present invention, a through hole is provided in the middle of the upper part of the buffer block body, and the diameter of the through hole in the middle of the upper part of the buffer block body matches the cross-sectional diameter of the sliding rod. The thickness of the damping layer is one millimeter, which can increase the sliding resistance of the sliding rod in the upper part of the buffer block body. With the help of the compression spring, a certain pressure is required for the top block to retract to the top of the buffer block body. The compression spring shares part of the pressure on the buffer block body.

[0011] As a preferred embodiment of the folding buffer block for shock absorption in automobile doors according to the present invention, a set of hollow chambers is opened on the upper and lower sides of the buffer block body. The circular plate and compression spring are distributed in the hollow chamber on the upper side of the buffer block body, and all structures connected to the bottom end of the fixing rod and the central shaft are located in the hollow chamber on the lower side of the buffer block body. The end of the compression spring away from the circular plate is fixedly connected to the bottom of the hollow chamber on the upper side of the buffer block body. When the top block is impacted, it drives the bottom fixing rod and the central shaft to move downward. The first and second fixing shafts on the left and right sides of the central shaft respectively drive the first and second expansion plates located below the buffer block body to move outward through the first and second rotating rods, thereby enabling the first and second expansion plates, which were originally fixed inside the door, to expand outward.

[0012] As a preferred embodiment of the foldable buffer block for shock absorption in automobile doors according to the present invention, the buffer block body has through grooves on both the front and rear sides of the lower interior, and the length and width of the through grooves are matched with the left and right lengths and thicknesses of the first expansion plate and the second expansion plate, so that the first expansion plate and the second expansion plate can slide back and forth in the lower interior of the buffer block body to achieve the purpose of expansion and contraction.

[0013] As a preferred embodiment of the foldable buffer block for shock absorption in automobile doors according to the present invention, the overall shapes of the first expansion plate and the second expansion plate are matched, and the cross-sectional shapes of the first expansion plate and the second expansion plate are both fan-shaped. The cross-sectional shape of the rubber layer is matched with the cross-sectional shapes of the first expansion plate and the second expansion plate, and the thickness of the rubber layer is two millimeters. The rubber layer moves outward synchronously with the first expansion plate and the second expansion plate. The position of the rubber layer is the position where the interior of the car door contacts the first expansion plate and the second expansion plate after they expand outward, which improves the friction between the first expansion plate and the second expansion plate and the interior of the car door to a certain extent and improves stability.

[0014] The present invention has the following beneficial effects:

[0015] The foldable buffer block for car door shock absorption designed in this invention, through the design and cooperation of the top block and the fixed rod, allows the device to move downwards via the bottom fixed rod and the central shaft when impacted. The first and second fixed shafts on the left and right sides of the central shaft, respectively, drive the first and second expansion plates located below the buffer block body to move outwards via the first and second rotating rods. This causes the first and second expansion plates, originally fixed inside the car door, to expand outwards. This not only reduces the probability of the buffer block body falling off after being impacted when the car door is closed, but also provides an additional buffer area by expanding the first and second expansion plates inwards. This more effectively absorbs and disperses the impact force when the door is closed, reducing damage to the car door and body, and reducing local stress concentration in the buffer block body, thereby extending the service life of the buffer block body. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the longitudinal cross-sectional structure of the buffer block body of the present invention;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the circular plate that is longitudinally flipped 180 degrees according to the present invention;

[0020] Figure 4 This is a schematic diagram of the longitudinal cross-sectional structure of the sliding rod of the present invention.

[0021] Legend:

[0022] 1. Buffer block body; 2. Damping layer; 3. Top block; 4. First expansion plate; 5. Second expansion plate; 6. Circular plate; 7. Compression spring; 8. Fixed rod; 9. Central shaft; 10. First fixed shaft; 11. First rotating rod; 12. Second fixed shaft; 13. Second rotating rod; 14. Rubber layer; 15. Sliding rod. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1

[0025] like Figures 1 to 4 As shown;

[0026] A foldable buffer block for shock absorption in automobile doors includes a buffer block body 1.

[0027] In this implementation scheme: As disclosed in the background art above, "when using existing folding buffer blocks, adhesive is generally applied to the end of the buffer block that contacts the inside of the car door, and the buffer block is inserted into the pre-reserved hole in the car door. The buffer block is fixed to the inside of the car door by the adhesive. However, the adhesive has a time limit. Long-term use or closing the car door forcefully will damage the buffer block and increase the probability of the buffer block falling out of the car door." In combination, this problem is obviously present and difficult to solve. Therefore, in order to solve this technical problem, a compression spring 7 and a fixing rod 8 are added to this application document.

[0028] Furthermore:

[0029] like Figures 1 to 4 As shown:

[0030] Based on the above: A foldable buffer block for shock absorption in automobile doors includes a buffer block body 1. A sliding rod 15 penetrates and slides through the upper center of the buffer block body 1. A damping layer 2 is provided on the outer side of the sliding rod 15. A top block 3 is glued to the top of the sliding rod 15 via adhesive. A circular plate 6 is glued to the outer side of the bottom of the sliding rod 15 via adhesive. A compression spring 7 is welded to the outer side of the bottom of the circular plate 6. A fixing rod 8 is glued to the middle of the bottom of the sliding rod 15 via adhesive. A central shaft 9 is welded to the end of the fixing rod 8 away from the sliding rod 15. A rotatable first fixed shaft 10 is provided on the left end face of the central shaft 9. A first rotating rod 11 is welded to the front end face of the first fixed shaft 10. The end of the first rotating rod 11 away from the first fixed shaft 10 is connected to a first expansion plate via the fixed shaft. 4. A rotatable second fixed shaft 12 is provided on the right end face of the central shaft 9. A second rotating rod 13 is welded to the rear end face of the second fixed shaft 12. The end of the second rotating rod 13 away from the second fixed shaft 12 is connected to the second expansion plate 5 through the fixed shaft. The top ends of the first expansion plate 4 and the second expansion plate 5 are both glued to the rubber layer 14. The outer side of the damping layer 2 is in contact with the middle of the upper part of the buffer block body 1. The middle of the inner part of the circular plate 6 is fixedly connected to the outer side of the upper part of the fixed rod 8. The middle of the upper part of the buffer block body 1 is slidably connected to the outer side of the fixed rod 8. The outer sides of the first expansion plate 4 and the second expansion plate 5 are slidably connected to the front and rear sides of the lower part of the buffer block body 1. The outer side of the upper part of the rubber layer 14 is slidably connected to the front and rear sides of the lower part of the buffer block body 1.

[0031] In this embodiment, not only is the probability of the buffer block body 1 falling off after being impacted when the door is closed reduced, but the expansion of the first expansion plate 4 and the second expansion plate 5 into the door can provide an additional buffer area, thereby more effectively absorbing and dispersing the impact force when the door is closed, and reducing damage to the door and body.

[0032] In an optional embodiment: the lower outer side of the buffer block body 1 is located inside the car door, and the upper outer side of the buffer block body 1 and the top block 3 are exposed outside the car door. The bottom of the buffer block body 1 is uniformly coated with adhesive, and the bottom of the buffer block body 1 is adhered to the inside of the car door.

[0033] In this embodiment, the bottom of the buffer block body 1 can be inserted into the car door. Whenever the car door is closed, when the top block 3 of the buffer block body 1 contacts the frame, the first expansion plate 4 and the second expansion plate 5 expand outward, which can reduce the local stress concentration of the buffer block body 1 and thus extend the service life of the buffer block body 1.

[0034] In an optional embodiment: a through hole is provided in the middle of the upper part of the buffer block body 1, and the diameter of the through hole in the middle of the upper part of the buffer block body 1 matches the cross-sectional diameter of the sliding rod 15. The thickness of the damping layer 2 is one millimeter, which can increase the sliding resistance of the sliding rod 15 in the upper part of the buffer block body 1.

[0035] In this embodiment: with the help of the compression spring 7, a certain amount of pressure is required for the top block 3 to retract to the top of the buffer block body 1. The compression spring 7 shares part of the pressure on the buffer block body 1.

[0036] In an optional embodiment: a set of hollow chambers are opened on the upper and lower sides of the buffer block body 1. The circular plate 6 and the compression spring 7 are distributed in the hollow chamber on the upper side of the buffer block body 1. All structures that connect the bottom end of the fixing rod 8 to the central shaft 9 are located in the hollow chamber on the lower side of the buffer block body 1. The end of the compression spring 7 away from the circular plate 6 is fixedly connected to the bottom of the hollow chamber on the upper side of the buffer block body 1.

[0037] In this embodiment: when the top block 3 is impacted, it drives the bottom fixing rod 8 and the central shaft 9 to move downward. The first fixing shaft 10 and the second fixing shaft 12 on the left and right sides of the central shaft 9 respectively drive the first expansion plate 4 and the second expansion plate 5 located below the buffer block body 1 to move outward through the first rotating rod 11 and the second rotating rod 13, thereby enabling the first expansion plate 4 and the second expansion plate 5, which were originally fixed inside the car door, to expand outward below the buffer block body 1.

[0038] In an optional embodiment: through slots are provided on both the front and rear sides of the lower part of the buffer block body 1, and the length and width of the through slots are matched with the left and right lengths and thicknesses of the first expansion plate 4 and the second expansion plate 5.

[0039] In this embodiment, the first expansion plate 4 and the second expansion plate 5 can slide back and forth inside the buffer block body 1 to achieve the purpose of expansion and contraction.

[0040] In an optional embodiment: the overall shape of the first expansion plate 4 and the second expansion plate 5 are matched, and the cross-sectional shape of the first expansion plate 4 and the second expansion plate 5 is fan-shaped. The cross-sectional shape of the rubber layer 14 is matched with the cross-sectional shape of the first expansion plate 4 and the second expansion plate 5, and the thickness of the rubber layer 14 is two millimeters.

[0041] In this embodiment, the rubber layer 14 moves outward synchronously with the first expansion plate 4 and the second expansion plate 5. The position of the rubber layer 14 is the position where the inside of the car door contacts the first expansion plate 4 and the second expansion plate 5 after they expand outward. This increases the friction between the first expansion plate 4 and the second expansion plate 5 and the inside of the car door to a certain extent, thereby improving stability.

[0042] The working principle and usage process of this invention: During installation, adhesive is applied to the bottom of the buffer block body 1, and the bottom of the buffer block body 1 is first inserted into the pre-drilled hole inside the car door. At this time, the bottom of the buffer block body 1 is in contact with the inner wall of the car door. After air drying, the installation is complete. When the car door is closed, the car door moves the buffer block body 1 towards the frame position until the car door is closed. At this time, the top block 3 of the buffer block body 1 is squeezed by the frame and moves towards the top of the buffer block body 1. The top block 3 drives the sliding rod 15 and the fixed rod 8 at the bottom to move downwards and inwards into the buffer block body 1. The damping layer 2 on the outside of the sliding rod 15 increases the friction between the upper part of the buffer block body 1 and the sliding rod 15. Meanwhile, the circular plate 6 at the bottom of the sliding rod 15 presses down on the compression spring 7, causing the compression spring 7 to deform. The fixed rod 8 presses down on the central shaft 9, which in turn drives the first fixed shaft 10 on the left and the second fixed shaft 12 on the right to move downwards simultaneously. The first rotating rod 11 on the front end of the first fixed shaft 10 drives the first expansion plate 4 to expand forward, and the second rotating rod 13 on the rear end of the second fixed shaft 12 drives the second expansion plate 5 to expand backward. At this time, both the first expansion plate 4 and the second expansion plate 5 drive the rubber layer 14 to extend on the inner wall of the door. When the door is closed, the expansion of the first expansion plate 4 and the second expansion plate 5 into the door provides an additional buffer area, thereby more effectively absorbing and dispersing the impact force when the door is closed, reducing damage to the door and body, and reducing local stress concentration in the buffer block body 1, thus extending the service life of the buffer block body 1. The top block is under pressure and moves downwards and inwards, while the first and second expansion plates expand outwards due to the inner compression. When the door is closed, the top block contacts and compresses the frame, achieving shock absorption. To ensure smoother outward expansion of the first and second expansion plates, preferably, the lower end faces of the first and second expansion plates are beveled, with their height decreasing towards the outer edge. Alternatively, a wedge-shaped block in the shape of an isosceles triangle can be provided within the buffer block body, fixed to the bottom of the hollow cavity inside the buffer block body. The first and second expansion plates are located on either side of the wedge-shaped block, thereby guiding the movement of the first and second expansion plates using the wedge-shaped block. Alternatively, a spring can be provided between the first and second expansion plates, thereby using the spring to, on the one hand, create an angle between the first and second expansion plates to guide their movement, and on the other hand, to return the first and second expansion plates to their original position after the pressure from the top is relieved.

[0043] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A foldable buffer block for shock absorption in automobile doors, comprising a buffer block body (1), characterized in that: A sliding rod (15) is slidably connected to the upper middle part of the buffer block body (1). A damping layer (2) is provided on the outer side of the sliding rod (15). A top block (3) is fixedly connected to the top of the sliding rod (15). A circular plate (6) is fixedly connected to the outer side of the bottom end of the sliding rod (15). A compression spring (7) is fixedly connected to the outer side of the bottom of the circular plate (6). A fixed rod (8) is fixedly connected to the middle of the bottom end of the sliding rod (15). A central shaft (9) is fixedly connected to the end of the fixed rod (8) away from the sliding rod (15). A first fixed shaft is rotatably connected to the left end face of the central shaft (9). 10), the front end face of the first fixed shaft (10) is fixedly connected to the first rotating rod (11), the end of the first rotating rod (11) away from the first fixed shaft (10) is rotatably connected to the first expansion plate (4), the right end face of the central shaft (9) is rotatably connected to the second fixed shaft (12), the rear end face of the second fixed shaft (12) is fixedly connected to the second rotating rod (13), the end of the second rotating rod (13) away from the second fixed shaft (12) is rotatably connected to the second expansion plate (5), and the top ends of the first expansion plate (4) and the second expansion plate (5) are both fixedly connected to the rubber layer (14).

2. The folding buffer block for shock absorption in automobile doors according to claim 1, characterized in that: The outer side of the damping layer (2) is in contact with the upper middle of the inside of the buffer block body (1). The middle of the inside of the circular plate (6) is fixedly connected to the upper outer side of the fixed rod (8). The middle of the inside of the buffer block body (1) is slidably connected to the outer side of the fixed rod (8). The outer sides of the first expansion plate (4) and the second expansion plate (5) are slidably connected to the lower front and rear sides of the inside of the buffer block body (1). The outer side of the upper part of the rubber layer (14) is slidably connected to the lower front and rear sides of the inside of the buffer block body (1).

3. A folding buffer block for shock absorption in automobile doors according to claim 1, characterized in that: The lower outer side of the buffer block body (1) is located inside the car door, and the upper outer side and the top block (3) of the buffer block body (1) are exposed outside the car door. The bottom of the buffer block body (1) is uniformly coated with adhesive, and the bottom of the buffer block body (1) is adhered to the inside of the car door.

4. A folding buffer block for shock absorption in automobile doors according to claim 1, characterized in that: The buffer block body (1) has a through hole in the upper middle part inside, and the diameter of the through hole in the upper middle part inside the buffer block body (1) matches the cross-sectional diameter of the sliding rod (15). The thickness of the damping layer (2) is one millimeter.

5. A folding buffer block for shock absorption in automobile doors according to claim 1, characterized in that: The buffer block body (1) has a set of hollow chambers on the upper and lower sides. The circular plate (6) and the compression spring (7) are distributed in the hollow chamber on the upper side of the buffer block body (1). All the structures that connect the bottom end of the fixing rod (8) to the central shaft (9) are located in the hollow chamber on the lower side of the buffer block body (1). The end of the compression spring (7) away from the circular plate (6) is fixedly connected to the bottom of the hollow chamber on the upper side of the buffer block body (1).

6. A folding buffer block for shock absorption in automobile doors according to claim 1, characterized in that: The buffer block body (1) has through slots on both the front and rear sides below the interior, and the length and width of the through slots are matched with the left and right lengths and thicknesses of the first expansion plate (4) and the second expansion plate (5).

7. A folding buffer block for shock absorption in automobile doors according to claim 1, characterized in that: The overall shape of the first expansion plate (4) and the second expansion plate (5) are matched, and the cross-sectional shape of the first expansion plate (4) and the second expansion plate (5) is fan-shaped. The cross-sectional shape of the rubber layer (14) is matched with the cross-sectional shape of the first expansion plate (4) and the second expansion plate (5), and the thickness of the rubber layer (14) is two millimeters.

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