Folding buffer block for shock absorption of automobile door

Abstract

The invention relates to the technical field of automobile door buffer blocks, in particular to an automobile door damping folding buffer block which comprises a buffer block body, a sliding rod is slidably connected to the middle of the upper portion in 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, and a circular plate is fixedly connected to the outer side of the bottom end of the sliding rod. Compression springs are fixedly connected to the outer sides of the bottoms of the circular plates, and fixing rods are fixedly connected to the middles of the bottom ends of the sliding rods. Through the design and cooperation of the top block and the fixing rod, the probability that the buffer block body falls off after being impacted when the vehicle door is closed is reduced, meanwhile, the first expansion plate and the second expansion plate expand towards the interior of the vehicle door to provide an additional buffer area, and therefore the impact force generated when the vehicle door is closed is more effectively absorbed and dispersed; damage to the automobile door and the automobile body is reduced, local stress concentration of the buffer block body can be reduced, and therefore the service life of the buffer block body is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of automobile door buffer blocks, and in particular to a foldable buffer block for shock absorption of automobile doors. Background Art

[0002] A folding buffer block for automobile door shock absorption usually refers to a part used in the hinge system of an automobile door;

[0003] The function of the foldable buffer block is to absorb the impact force when the door is closed, reduce vibration and noise, and protect the door and body structure from damage. Its specific features are as follows: Folding design: This buffer block is usually foldable, so that when the door is closed, it can be compressed to absorb energy, and it can return to its original shape when the door is opened; Folding design: This buffer block is usually foldable, so that when the door is closed, it can be compressed to absorb energy, and it can return to its original shape when the door is opened; Installation position: Usually installed inside or near the hinge of the door. Some designs may also install the buffer block at the edge where the door meets the body;

[0004] When using the existing foldable buffer block, glue 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 hole reserved in the car door. The buffer block is fixed in the car door by the viscosity of the glue. However, the viscosity of the glue is time-limited. Prolonged use or forceful closing of the car door will cause damage to the buffer block, and the probability of the buffer block falling out of the car door will also increase.

[0005] In order to solve the above problems, the present application proposes a foldable buffer block for shock absorbing of automobile doors. Summary of the invention

[0006] In order to solve the problems raised in the above background technology, the present invention provides a foldable buffer block for automobile door shock absorption, which can reduce the probability of the buffer block body falling off after being impacted when the door is closed.

[0007] In order to achieve the above-mentioned objectives, the present invention adopts the following technical scheme: a foldable buffer block for shock absorption of automobile doors, comprising a buffer block body, a sliding rod is slidably connected to the middle of the upper interior of the buffer block body, a damping layer is arranged on the outside of the sliding rod, a top block is fixedly connected to the top of the sliding rod, a circular plate is fixedly connected to the outside of the bottom end of the sliding rod, a compression spring is fixedly connected to the outside of the bottom of the circular plate, a fixing rod is fixedly connected to the middle of the bottom end of the sliding rod, an end of the fixing rod away from the sliding rod is fixedly connected to a central axis body, a left end face of the central axis body is rotatably connected to a first fixed axis, a front end face of the first fixed axis is fixedly connected to a first rotating rod, an end of the first rotating rod away from the first fixed axis is rotatably connected to a first expansion plate, a right end face of the central axis body is rotatably connected to a second fixed axis, a rear end face of the second fixed axis is fixedly connected to a second rotating rod, an end of the second rotating rod away from the second fixed axis is rotatably connected to a second expansion plate, and rubber layers are fixedly connected to the tops of both the first expansion plate and the second expansion plate.

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

[0009] As a preferred foldable buffer block for shock absorption of automobile doors of the present invention, the lower outer side of the buffer block body is arranged at the inner position of the automobile door, and the upper outer side of the buffer block body and the top block are exposed on the outside of the automobile door, the bottom of the buffer block body is evenly coated with glue, and the bottom of the buffer block body is adhered to the inside of the automobile door, so that the bottom of the buffer block body can be inserted into the interior of the automobile door, and whenever the automobile door is closed and the top block on the top of the buffer block body contacts the frame position, 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 foldable buffer block for automobile door shock absorption of the present invention, a through hole is opened 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 on the top of the buffer block body. In conjunction with the compression spring, a certain pressure is required to shrink the top block to the top of the buffer block body, and the compression spring shares part of the pressure for the buffer block body.

[0011] As a preferred foldable buffer block for shock absorption of automobile doors of the present invention, a group of hollow chambers are respectively opened on the upper and lower sides inside the buffer block body, the circular plate and the compression spring are distributed in the hollow chamber on the upper side inside the buffer block body, and all structures connected with the bottom end of the fixed rod and the central axis body are in the hollow chamber on the lower side inside the buffer block body, and 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 inside the buffer block body. When the top block is impacted, the bottom fixed rod and the central axis body are driven to move downward, and the first fixed axis and the second fixed axis on the left and right sides of the central axis body drive the first expansion plate and the second expansion plate under the buffer block body to move outward through the first rotating rod and the second rotating rod respectively, thereby allowing the first expansion plate and the second expansion plate originally fixed in the vehicle door under the buffer block body to expand outward.

[0012] As a preferred foldable buffer block for automobile door shock absorption of the present invention, through grooves are opened on the front and rear sides of the lower interior of the buffer block body, and the length and width of the through grooves match 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 forward and backward under the interior of the buffer block body to achieve the purpose of expansion and retraction.

[0013] As a preferred foldable buffer block for shock absorption of a car door of the present invention, the overall shapes of the first expansion plate and the second expansion plate match, 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 matches the cross-sectional shape 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, and the position where the rubber layer is arranged is the position where the inside of the car door contacts the first expansion plate and the second expansion plate after outward expansion, thereby improving the friction between the first expansion plate and the second expansion plate and the inside of the car door to a certain extent, thereby improving stability.

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

[0015] The foldable buffer block for shock absorption of automobile doors designed by the present invention cooperates with the design of the top block and the fixed rod so that the device can drive the bottom fixed rod and the central axis body to move downward through the top block when impacted, and the first fixed axis and the second fixed axis on the left and right sides of the central axis body respectively drive the first expansion plate and the second expansion plate below the buffer block body to move outward through the first rotating rod and the second rotating rod, so that the first expansion plate and the second expansion plate originally fixed in the vehicle door under the buffer block body expand outward, which not only reduces the probability of the buffer block body falling off after the impact when the vehicle door is closed, but also the expansion of the first expansion plate and the second expansion plate into the vehicle door can provide an additional buffer area, thereby more effectively absorbing and dispersing the impact force when closing the door, reducing damage to the vehicle door and the vehicle body, and reducing the local stress concentration of the buffer block body, thereby extending the service life of the buffer block body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

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

[0018] Figure 2 It 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 of the present invention flipped 180 degrees longitudinally;

[0020] Figure 4 It 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 axis; 10. First fixed axis; 11. First rotating rod; 12. Second fixed axis; 13. Second rotating rod; 14. Rubber layer; 15. Sliding rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work 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 of an automobile door comprises a buffer block body 1.

[0027] In this embodiment: As disclosed in the background technology above, "when using the existing foldable buffer block, generally glue is applied to the end of the buffer block that contacts the inside of the car door, and the buffer block is inserted into the hole reserved in the car door. The buffer block is fixed in the car door by the viscosity of the glue, but the viscosity of the glue is time-limited. Long-term use or forceful closing of the car door will cause damage to the buffer block, and will also increase the probability of the buffer block falling out of the car door." In terms of combined use, this problem is obviously a problem that exists and is difficult to solve. In view of this, in order to solve this technical problem, a compression spring 7 and a fixing rod 8 are added to this application document;

[0028] More specifically:

[0029] like Figures 1 to 4 As shown:

[0030] In combination with the above content: A foldable buffer block for shock absorption of automobile doors includes a buffer block body 1, a sliding rod 15 penetrates and slides in the middle of the upper part of the buffer block body 1, a damping layer 2 is arranged on the outside of the sliding rod 15, the top of the sliding rod 15 is bonded to the top block 3 by adhesive, the outer side of the bottom end of the sliding rod 15 is bonded to the circular plate 6 by adhesive, a compression spring 7 is welded to the outer side of the bottom of the circular plate 6, a fixing rod 8 is bonded to the middle of the bottom end of the sliding rod 15 by adhesive, a central axis body 9 is welded at one end of the fixing rod 8 away from the sliding rod 15, a rotatable first fixed axis 10 is arranged on the left end face of the central axis body 9, a first rotating rod 11 is welded on the front end face of the first fixed axis 10, and the end of the first rotating rod 11 away from the first fixed axis 10 is connected to the first expansion plate through the fixed axis 4. A rotatable second fixed axis 12 is arranged on the right end face of the central axis body 9, a second rotating rod 13 is welded to the rear end face of the second fixed axis 12, an end of the second rotating rod 13 away from the second fixed axis 12 is connected to the second expansion plate 5 through the fixed axis, the tops of the first expansion plate 4 and the second expansion plate 5 are both bonded to the rubber layer 14 by adhesive, 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, and 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 vehicle door is closed reduced, but at the same time, the first expansion plate 4 and the second expansion plate 5 expand into the vehicle door to provide an additional buffer area, thereby more effectively absorbing and dispersing the impact force when closing the door, reducing damage to the vehicle door and the vehicle body.

[0032] In an optional embodiment: the lower outer side of the buffer block body 1 is set at the inner position of the car door, and the upper outer side of the buffer block body 1 and the top block 3 are exposed on the outside of the car door, the bottom of the buffer block body 1 is evenly coated with glue, 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 interior of the car door. Whenever the car door is closed and the top block 3 on the top of the buffer block body 1 contacts the frame position, 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, thereby extending the service life of the buffer block body 1.

[0034] In an optional embodiment: a through hole is opened 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, and the thickness of the damping layer 2 is one millimeter, which can increase the sliding resistance of the sliding rod 15 on the upper part of the buffer block body 1.

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

[0036] In an optional embodiment: a group of hollow bins are opened on the upper and lower sides inside the buffer block body 1, the circular plate 6 and the compression spring 7 are distributed in the hollow bin on the upper side inside the buffer block body 1, and all structures connected to the bottom end of the fixing rod 8 and the central axis 9 are in the hollow bin on the lower side inside the buffer block body 1, and the end of the compression spring 7 away from the circular plate 6 is fixedly connected to the bottom of the hollow bin on the upper side inside the buffer block body 1.

[0037] In this embodiment: when the top block 3 is impacted, it drives the bottom fixed rod 8 and the central axis 9 to move downward, and the first fixed axis 10 and the second fixed axis 12 on the left and right sides of the central axis 9 respectively drive the first expansion plate 4 and the second expansion plate 5 under the buffer block body 1 to move outward through the first rotating rod 11 and the second rotating rod 13, thereby allowing the first expansion plate 4 and the second expansion plate 5 originally fixed in the vehicle door under the buffer block body 1 to expand outward.

[0038] In an optional embodiment: through grooves are opened on both the front and rear sides of the lower interior of the buffer block body 1, and the length and width of the through grooves match 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 are capable of sliding back and forth inside the buffer block body 1 to achieve the purpose of expansion and retraction.

[0040] In an optional embodiment: the overall shapes of the first expansion plate 4 and the second expansion plate 5 match, and the cross-sectional shapes of the first expansion plate 4 and the second expansion plate 5 are both fan-shaped, the cross-sectional shape of the rubber layer 14 matches the cross-sectional shapes 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 where the rubber layer 14 is arranged is the position where the interior of the vehicle door contacts the first expansion plate 4 and the second expansion plate 5 after expanding outward, which increases the friction between the first expansion plate 4 and the second expansion plate 5 and the interior of the vehicle door to a certain extent, thereby improving stability.

[0042] The working principle and use process of the present invention are as follows: during installation, the adhesive is adhered to the bottom of the buffer block body 1, and the bottom of the buffer block body 1 is first inserted into the reserved hole inside the car door. At this time, the bottom of the buffer block body 1 contacts the inner wall of the car door. After air drying, the installation is completed. When the car door is closed, the car door drives the buffer block body 1 to move toward the frame position until the car door is closed. At this time, the top block 3 on the top of the buffer block body 1 is squeezed by the frame and moves toward the top of the buffer block body 1. The top block 3 drives the bottom sliding rod 15 and the fixed rod 8 to move downward inside 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, and the circular plate 6 at the bottom end of the sliding rod 15 squeezes the compression spring 7 downward, and the compression spring 7 is deformed. The fixed rod 8 presses the central axis 9 downward, and the central axis 9 drives the first fixed axis 10 on the left and the second fixed axis 12 on the right to move downward at the same time. The first rotating rod 11 on the front end of the first fixed axis 10 drives the first expansion plate 4 to expand forward, and the second rotating rod 13 on the rear end of the second fixed axis 12 drives the second expansion plate 5 to expand backward. At this time, the first expansion plate 4 and the second expansion plate 5 both drive the rubber layer 14 to extend on the inner wall of the door. When the door is closed, the impact force generated, the first expansion plate 4 and the second expansion plate 5 expand into the door to provide an additional buffer area, so as to more effectively absorb and disperse the impact force when closing the door, reduce the damage to the door and the body, and reduce the local stress concentration of the buffer block body 1, thereby extending the service life of the buffer block body 1. The top block is subjected to pressure and moves downward inside the buffer block, and the first expansion plate and the second expansion plate are squeezed from the inside and expand outward. When the door is closed, the top block contacts and squeezes the vehicle frame to achieve shock absorption. In order to make the first expansion plate and the second expansion plate expand outward more smoothly, it is preferred that the lower end faces of the first expansion plate and the second expansion plate are in the shape of an inclined plane, and the height is lower as it is closer to the outside. Alternatively, a wedge block in the shape of an isosceles triangle may be provided in the buffer block body, and the wedge block may be fixed on the bottom of the hollow cavity inside the buffer block body. The first expansion plate and the second expansion plate are respectively located on both sides of the wedge block, so that the wedge block is used to guide the movement direction of the first expansion plate and the second expansion plate. Alternatively, a spring may be provided between the first expansion plate and the second expansion plate, so that the spring can, on the one hand, form an angle between the first expansion plate and the second expansion plate to guide the movement of the first expansion plate and the second expansion plate, and on the other hand, after the pressure from the top is removed, the spring is used to reset the first expansion plate and the second expansion plate.

[0043] Finally, it should be noted that the above are only 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 aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A foldable buffer block for automobile door shock absorption, comprising a buffer block body (1), characterized in that: A sliding rod (15) is slidably connected to the middle of the upper part of the buffer block body (1), a damping layer (2) is arranged 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), one end of the fixed rod (8) away from the sliding rod (15) is fixedly connected to a central shaft body (9), and the left end face of the central shaft body (9) is rotatably connected to a first fixed shaft ( 10), the front end face of the first fixed shaft (10) is fixedly connected to a first rotating rod (11), the end of the first rotating rod (11) away from the first fixed shaft (10) is rotatably connected to a first expansion plate (4), the right end face of the central shaft body (9) is rotatably connected to a second fixed shaft (12), the rear end face of the second fixed shaft (12) is fixedly connected to a second rotating rod (13), the end of the second rotating rod (13) away from the second fixed shaft (12) is rotatably connected to a 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 a rubber layer (14).

2. A foldable buffer block for automobile door shock absorption according to claim 1, characterized in that: The outer side of the damping layer (2) contacts the middle of the upper interior of the buffer block body (1); the middle of the inner interior of the circular plate (6) is fixedly connected to the outer side of the upper interior of the fixed rod (8); the middle of the upper interior 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 interior of the buffer block body (1); and the outer side of the upper interior of the rubber layer (14) is slidably connected to the front and rear sides of the lower interior of the buffer block body (1).

3. The foldable buffer block for automobile door shock absorption according to claim 1, characterized in that: The lower outer side of the buffer block body (1) is arranged at an inner position of the automobile door, and the upper outer side of the buffer block body (1) and the top block (3) are both exposed to the outer side of the automobile door. The bottom of the buffer block body (1) is evenly coated with adhesive, and the bottom of the buffer block body (1) is adhered to the inside of the automobile door.

4. The foldable buffer block for automobile door shock absorption according to claim 1, characterized in that: 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.

5. The foldable buffer block for automobile door shock absorption according to claim 1, characterized in that: A group of hollow chambers are respectively provided 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); and all structures connected between the bottom end of the fixing rod (8) and the central axis (9) are located in the hollow chamber on the lower side of the buffer block body (1); and one 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. The foldable buffer block for automobile door shock absorption according to claim 1, characterized in that: Through slots are provided on both the front and rear sides of the lower interior of the buffer block body (1), and the length and width of the through slots match the left and right lengths and thicknesses of the first expansion plate (4) and the second expansion plate (5).

7. The foldable buffer block for automobile door shock absorption according to claim 1, characterized in that: The overall shapes of the first expansion plate (4) and the second expansion plate (5) match each other, and the cross-sectional shapes of the first expansion plate (4) and the second expansion plate (5) are both fan-shaped, the cross-sectional shape of the rubber layer (14) matches 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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