Vehicle door damping cushion pad

Abstract

The utility model relates to a shock-absorbing cushion pad for a vehicle door. The vehicle door damping cushion pad is installed on a vehicle door lock catch and comprises an installation bottom plate, an installation hole, an elastic cavity and an airtight membrane. The two mounting holes are symmetrically formed in the mounting bottom plate; the two elastic cavities are oppositely arranged on the mounting bottom plate, and the connecting line of the elastic cavities and the connecting line of the mounting holes form a cross shape; the airtight diaphragm is arranged at the bottom end of the elastic cavity, and an air chamber is formed by the airtight diaphragm and the elastic cavity, so that the air spring is formed. According to the scheme, the damping resistance can be dynamically adjusted according to the door closing action, the good damping and buffering effect is achieved, the requirement for the material of the buffering cushion can be lowered, and the problem that the vehicle door cannot be closed or the damping and buffering effect is poor is effectively solved. Meanwhile, the damping cushion pad can be stably fixed to the car door lock catch for a long time and is not prone to falling off due to impact of a car door, the problem that an existing double-faced adhesive tape is aged, fails or polluted can be effectively solved, and the damping cushion pad is simple in structure, high in applicability and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorption, in particular to a vehicle door shock absorption cushion which adopts elastic material and air spring to absorb shock and buffer together. Background Art

[0002] Car doors, hoods, and other areas where they open and close are typically equipped with stoppers. For example, these are located on the inside of the door. When the door is closed, the stopper strikes the inner door frame, limiting the position and ensuring a precise fit between the lock tongue and the striker. However, existing stoppers are made of hard materials. Each time the door is opened or closed, the stopper strikes the inner door frame, causing wear and tear and potentially difficult-to-repair dents over time. Consequently, more and more car door strikers are being fitted with cushioning pads.

[0003] Most of the current car door buffer pads only rely on the elasticity of rubber or elastomers themselves to achieve physical blocking or friction blocking, which is not effective and is relatively stiff, and has high requirements on the size of the buffer pad and the hardness of the material. If the size is too large or the hardness is too high, the car door is not easy to close; if the size is too small or the hardness is too low, it is easy to fail to achieve the shock absorption and buffering effect. As a result, when producing buffer pads, they need to be customized according to specific car models, with low versatility and high costs. At the same time, double-sided tape is generally used in the existing technology to fix the buffer pad to the car door lock, but the double-sided tape is an organic material, and over time, it is easy to reduce the adhesion due to aging, especially after being hit by the car door multiple times, it is easy to fall off and lose its effectiveness, and the double-sided tape has a certain degree of pollution to the car body, which is troublesome to clean.

[0004] Therefore, there is an urgent need to design a door shock-absorbing cushion that can dynamically adjust the shock-absorbing resistance according to the door closing action, making the shock absorption and cushioning more stable and having a better shock absorption and cushioning effect. This effect can also reduce the requirements for the cushion material, effectively solving the problems of the door not being able to close or the shock absorption and cushioning effect being poor. At the same time, the shock-absorbing cushion can be fixed to the door lock for a long time and stably, and is not easily dislodged by the impact of the door. It can also effectively avoid the aging failure or contamination problems of existing double-sided tape. Moreover, the structure is simple, the cost is low, and the applicability and practicality are strong. Utility Model Content

[0005] To overcome the problems existing in the related art, the present application provides a vehicle door shock-absorbing cushion that can dynamically adjust the shock-absorbing resistance according to the door closing action, making the shock absorption and buffering more stable and having a better shock absorption and buffering effect. This effect can also reduce the requirements for the cushion material, effectively solving the problem of the door not being able to close or the shock absorption and buffering effect being poor. At the same time, the shock-absorbing cushion can be fixed to the door lock for a long time and stably, and is not easily dislodged due to the impact of the door. It can also effectively avoid the aging failure or contamination problems of existing double-sided tape. The structure is simple, the cost is low, and the applicability and practicality are strong.

[0006] The first aspect of the present application is to provide a vehicle door shock-absorbing buffer pad, including a mounting base, a mounting hole, an elastic cavity and an airtight diaphragm; the two mounting holes are symmetrically arranged on the mounting base; the two elastic cavities are relatively arranged on the mounting base, and the connecting line of the elastic cavities and the connecting line of the mounting holes are cross-shaped; the airtight diaphragm is arranged at the bottom end of the elastic cavity, and forms an air chamber with the elastic cavity to constitute an air spring.

[0007] In a preferred technical solution of the present application, the elastic cavity includes a first elastic cavity and a second elastic cavity; the first elastic cavity is arranged directly above the second elastic cavity and is connected to the second elastic cavity; the cross-sectional area of ​​the second elastic cavity is larger than the cross-sectional area of ​​the first elastic cavity.

[0008] In a preferred technical solution of the present application, the elastic cavity further includes a receiving annular groove; the receiving annular groove is arranged between the first elastic cavity and the second elastic cavity.

[0009] In a preferred technical solution of the present application, the elastic cavity further includes a card slot; the card slot is arranged on the inner side wall of the second elastic cavity; and the airtight diaphragm is arranged in the card slot.

[0010] In a preferred technical solution of the present application, the airtight diaphragm includes a diaphragm body, a vent and a support column; the support column is arranged directly below the diaphragm body and connected to the diaphragm body; the vent is arranged in the center of the diaphragm body and passes through the support column.

[0011] In a preferred technical solution of the present application, the edge of the mounting base is further provided with a folded edge; the folded edge is perpendicular to the mounting base, and the extending direction of the folded edge is downward.

[0012] In the preferred technical solution of the present application, it also includes a plurality of magnets and magnet mounting holes; the magnet mounting holes are arranged on the folded edge and located at the four corners of the mounting base; and a plurality of the magnets are arranged at the magnet mounting holes.

[0013] In a preferred technical solution of the present application, a glue layer is provided between the magnet and the hole wall of the magnet mounting hole.

[0014] In a preferred technical solution of the present application, the mounting hole includes a first mounting hole and a second mounting hole; the first mounting hole and the second mounting hole are arranged opposite to each other on the mounting base plate and are connected to each other.

[0015] The technical solution provided by the present application may include the following beneficial effects: the vehicle door shock-absorbing buffer provided by the present application includes a mounting base, a mounting hole, an elastic cavity, an airtight diaphragm and a magnet. By flexibly combining the elastic cavity and the airtight diaphragm to form an air chamber to form an air spring, a reaction force is given to the vehicle door through the compressed air and the elasticity of the elastic cavity itself, thereby forming a resistance to the vehicle door during the relative movement between the vehicle door and the elastic cavity, slowing down the movement of the vehicle door and playing a role in shock absorption and buffering. Compared with existing vehicle door shock-absorbing pads, the solution of the present application can achieve smoother shock absorption and buffering by adopting a method of using elastic materials and air springs to achieve shock absorption and buffering, and dynamically adjusting the shock absorption resistance according to the door closing action, thereby achieving better shock absorption and buffering effect, and reducing the requirements for the material of the buffer pad, effectively solving the problem of the vehicle door not being able to close or the poor shock absorption and buffering effect. At the same time, by providing a magnet instead of the existing double-sided tape, the shock-absorbing buffer pad is fixed to the car door lock, so that the shock-absorbing buffer pad can be fixed on the car door lock for a long time and stably, and is not easy to fall off due to the impact of the car door. It can also effectively avoid the aging failure or pollution problems of the existing double-sided tape. The structure is simple, the cost is low, the applicability is strong, and the practicality is strong.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0018] Figure 1 1 is an exploded schematic diagram of a vehicle door shock-absorbing cushion shown in an embodiment of the present application;

[0019] Figure 2 1 is a schematic structural diagram of a vehicle door shock-absorbing cushion shown in an embodiment of the present application;

[0020] Figure 3 1 is a schematic diagram of the bottom surface of a vehicle door shock-absorbing cushion shown in an embodiment of the present application;

[0021] Figure 41 is another bottom schematic diagram of the vehicle door shock-absorbing cushion shown in an embodiment of the present application;

[0022] Figure 5 It is a side view schematic diagram of the vehicle door shock-absorbing buffer pad shown in an embodiment of the present application.

[0023] Description of reference numerals:

[0024] 1. Mounting base; 2. Mounting hole; 3. Elastic cavity; 31. First elastic cavity; 32. Second elastic cavity; 33. Accommodating ring groove; 34. Card slot; 4. Airtight diaphragm; 41. Main body; 42. Vent hole; 43. Support column; 5. Folding edge; 6. Magnet; 7. Magnet mounting hole. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0026] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. As used in this application and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0027] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0028] Most current door cushions rely solely on the elasticity of rubber or elastomers to achieve physical or frictional resistance, resulting in poor results and being relatively rigid. These cushions place high demands on the size and hardness of the material. If they are too large or too hard, the door will be difficult to close; if they are too small or too hard, they will likely fail to provide the shock-absorbing and cushioning effect. Furthermore, double-sided tape is commonly used to secure the cushion to the door latch. However, double-sided tape is an organic material and, over time, its adhesion decreases due to aging. It can easily fall off and lose its effectiveness, especially after repeated impacts with the door. Furthermore, the double-sided tape can contaminate the vehicle body to a certain extent, making it difficult to clean.

[0029] To address the above-mentioned issues, the present invention provides a vehicle door shock-absorbing cushion that dynamically adjusts its damping resistance according to the door closing action, resulting in a smoother damping and cushioning effect. This provides a superior damping and cushioning effect, and reduces the requirements for the cushion's material, effectively resolving issues such as the door not closing properly or poor damping and cushioning. Furthermore, the cushion can be stably secured to the door latch for extended periods of time, making it less susceptible to falling off due to door impacts. It also effectively avoids the aging, failure, and contamination issues associated with existing double-sided tape. Furthermore, the cushion offers a simple structure, low cost, strong applicability, and high practicality.

[0030] The technical solutions of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0031] Example

[0032] See also Figure 1-Figure 5The vehicle door shock-absorbing cushion of the present application includes a mounting base 1, a mounting hole 2, an elastic cavity 3, and an airtight diaphragm 4. The mounting base 1 is generally rectangular with rounded corners. The edge of the mounting base 1 is also provided with a folded edge 5. The folded edge 5 is perpendicular to the mounting base 1 and extends downward, that is, the folded edge 5 and the mounting base 1 form a mounting seat. The mounting hole 2 and elastic cavity 3 are both provided on the mounting base 1. The airtight diaphragm 4 is provided at the bottom end of the elastic cavity 3 and forms an air chamber with the elastic cavity 3 to constitute an air spring, which functions as an air spring. The mounting base plate 1, the elastic cavity 3 and the airtight diaphragm 4 are made of rubber, silicone or elastomer materials to achieve better shock absorption effect, wherein the elastomer refers to a polymer material that deforms significantly under external force and can quickly return to its original state and size after the external force is removed, including thermoplastic polyurethane elastomer (TPU), polyolefin thermoplastic elastomer (TPO) or styrene block copolymer thermoplastic elastomer (SBS). Preferably, the mounting base plate 1 and the elastic cavity 3 are made of silicone material. More preferably, the mounting base plate 1 and the elastic cavity 3 include a rubber layer and a silicone layer, and the rubber layer is arranged above the silicone layer. A better shock absorption effect is achieved by the silicone layer, and the high wear resistance of the rubber layer is used to ensure that the car door shock absorbing cushion can withstand long-term use and frequent door opening and closing operations without being easily worn or damaged.

[0033] Specifically, the two mounting holes 2 are symmetrically arranged on the mounting base 1. Exemplarily, the mounting holes 2 include a first mounting hole and a second mounting hole; the first mounting hole and the second mounting hole are arranged opposite each other on the mounting base 1 and are interconnected. When the door shock-absorbing cushion is installed on the vehicle body, it is only necessary to pass the U-shaped lock through the first mounting hole and the second mounting hole.

[0034] The two elastic cavities 3 are relatively arranged on the mounting base plate 1, and the connecting line of the elastic cavities 3 and the connecting line of the mounting holes 2 are cross-shaped. Through the cross-shaped design, the layout of the mounting holes 2 and the elastic cavities 3 can be made more compact, thereby effectively reducing the area occupied by the mounting base plate 1. Specifically, the elastic cavity 3 includes a first elastic cavity 31 and a second elastic cavity 32. The first elastic cavity 31 is arranged directly above the second elastic cavity 32 and is connected to the second elastic cavity 32. Exemplarily, the cross-sections of the first elastic cavity 31 and the second elastic cavity 32 are circular, and the cross-sectional area of ​​the second elastic cavity 32 is larger than the cross-sectional area of ​​the first elastic cavity 31, that is, the cross-sectional centers of the first elastic cavity 31 and the second elastic cavity 32 overlap, and when the first elastic cavity 31 is squeezed, it can move toward the second elastic cavity 32 (that is, move downward). Furthermore, in order to prevent the second elastic cavity 32 from being squeezed and deformed when the first elastic cavity 31 moves downward, the elastic cavity 3 further includes a receiving annular groove 33, which is provided between the first elastic cavity 31 and the second elastic cavity 32. When the first elastic cavity 31 moves downward, it can be accommodated in the receiving annular groove 33.

[0035] like Figure 3-Figure 4 As shown, in order to better install the airtight diaphragm 4, the elastic cavity 3 also includes a slot 34; the slot 34 is arranged on the inner wall of the second elastic cavity 32, and the airtight diaphragm 4 is arranged in the slot 34. Specifically, the slot 34 is annular, and the airtight diaphragm 4 is placed in the slot 34 and abuts against the slot wall of the slot 34, thereby limiting the airtight diaphragm 4 in the slot 34. Furthermore, the airtight diaphragm 4 is fixed in the slot 34 by glue, so that the airtight diaphragm 4 and the elastic cavity 3 can form a closed air chamber, wherein the glue is a special glue, such as a special silicone glue. It should be noted that when a closed air chamber structure is adopted, the air in the air chamber cannot be filled too full to prevent the elastic cavity 3 from being damaged due to exceeding the pressure limit when being squeezed by the car door.

[0036] The airtight diaphragm 4 includes a diaphragm body 41 and a support column 43. The diaphragm body 41 is adapted to the card slot 34. The support column 43 is arranged directly below the diaphragm body 41 and is connected to the diaphragm body 41. When the air chamber is squeezed by the car door, the airflow will give the airtight diaphragm 4 an outward force (i.e., toward the car body), which can be offset by the support force of the support column 43, making the structure of the air chamber more stable. Furthermore, in order to prevent the elastic cavity 3 from being damaged by excessive air pressure, the airtight diaphragm 4 also includes a vent 42. The vent 42 is arranged in the center of the diaphragm body 41 and passes through the support column 43. Therefore, when the car door squeezes the elastic cavity 3, the air in the air chamber can be discharged through the vent 42. When the car door is opened, the elastic cavity 3 rebounds, and air can also enter the air chamber through the vent 42.

[0037] In order to more stably fix the door shock-absorbing cushion on the door lock, the door shock-absorbing cushion further includes a plurality of magnets 6 and magnet mounting holes 7, such as Figure 3-Figure 4 As shown, the magnet mounting holes 7 are provided on the folded edge 5 and are located at the four corners of the mounting base 1. A plurality of magnets 6 are provided in the magnet mounting holes 7. Specifically, a glue layer is provided between the magnets 6 and the hole walls of the magnet mounting holes 7. The glue is a specialized glue, such as a specialized silicone glue.

[0038] It should be noted that the air chamber (air spring) in the embodiment of the present application can be a sealed method or a semi-sealed method. The sealed method is that the airtight diaphragm 4 is fixed in the slot 34 by glue, and there is no vent 42 on the diaphragm. Conversely, the semi-sealed air chamber is a method in which the airtight diaphragm 4 is not glued or a vent 42 is provided on the diaphragm. Both air chamber structures can play a role in buffering and shock absorption. Preferably, the air chamber adopts a semi-sealed method. The magnet 6 of the present application can be bonded by cold bonding or hot bonding process or fixed to the magnet mounting hole 7 by coating process.

[0039] The principle of shock absorption and buffering:

[0040] By passing the door lock through the mounting hole 2 and through the magnetic attraction of the magnet 6, the door shock-absorbing cushion is fixed to the door lock. When the user closes the door, the door first squeezes the first elastic cavity 31. At this time, the rebound force of the elastic material of the first elastic cavity 31 itself will give the door a reaction force, blocking the door's movement trend, thereby achieving physical blocking to reduce the impact of the door. When the door continues to squeeze the first elastic cavity 31 under the force applied by the user, the first elastic cavity 31 moves toward the second elastic cavity 32, and the air flow in the air chamber is compressed (the air chamber is sealed). The pressure of the compressed air will have a reaction force on the door (i.e., the rebound force of the air spring). Combined with the rebound force of the elastic cavity itself, it can form a resistance to the door during the relative movement between the door and the elastic cavity 3, slowing down the movement of the door and playing a shock-absorbing and buffering role.

[0041] It should be noted that when the air chamber is in a non-closed state, that is, the airtight diaphragm 4 is not fixed in the slot 34 with glue or the diaphragm is provided with a vent 42, the air pressure in the air chamber is variable, that is, when the car door squeezes the elastic cavity 3, the air in the air chamber will be discharged along the vent 42, thereby making the shock absorption and buffering smoother, and effectively avoiding the problem of the car door being difficult to close, thereby effectively reducing the hardness requirements for the material of the car door shock absorption and buffering pad.

[0042] In this embodiment, the vehicle door shock-absorbing cushion provided by the present application includes a mounting base, a mounting hole, an elastic cavity, an airtight diaphragm, and a magnet. By flexibly combining the elastic cavity and the airtight diaphragm to form an air chamber, an air spring is formed, thereby giving the vehicle door a reaction force through the compressed air and the elasticity of the elastic cavity itself, thereby forming a resistance to the vehicle door during the relative movement between the vehicle door and the elastic cavity, slowing down the movement of the vehicle door and playing a role in shock absorption and buffering. Compared with existing vehicle door shock-absorbing cushions, the solution of the present application can dynamically adjust the shock absorption resistance according to the door closing action, making the shock absorption and buffering more stable, having a better shock absorption and buffering effect, and can reduce the requirements for the cushion material, effectively solving the problem of the vehicle door not being able to close or the shock absorption and buffering effect being poor. At the same time, by providing a magnet instead of the existing double-sided tape, the shock-absorbing buffer pad is fixed to the car door lock, so that the shock-absorbing buffer pad can be fixed on the car door lock for a long time and stably, and is not easy to fall off due to the impact of the car door. It can also effectively avoid the aging failure or pollution problems of the existing double-sided tape. The structure is simple, the cost is low, the applicability is strong, and the practicality is strong.

[0043] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0044] For ease of description, spatially relative terms such as "on...", "above...", "on the upper surface of...", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure.

[0045] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A door shock-absorbing cushion, characterized in that: It comprises a mounting base plate (1), a mounting hole (2), an elastic cavity (3) and an airtight diaphragm (4); The two mounting holes (2) are symmetrically arranged on the mounting base plate (1); The two elastic cavities (3) are arranged opposite to each other on the mounting base plate (1), and the connecting line of the elastic cavities (3) and the connecting line of the mounting holes (2) are in a cross shape; The airtight diaphragm (4) is arranged at the bottom end of the elastic cavity (3) and forms an air chamber with the elastic cavity (3) to constitute an air spring.

2. The door shock-absorbing cushion according to claim 1, characterized in that: The elastic cavity (3) comprises a first elastic cavity (31) and a second elastic cavity (32); The first elastic cavity (31) is arranged directly above the second elastic cavity (32) and is in communication with the second elastic cavity (32); The cross-sectional area of ​​the second elastic cavity (32) is greater than the cross-sectional area of ​​the first elastic cavity (31).

3. The door shock-absorbing cushion according to claim 2, characterized in that: The elastic cavity (3) further includes an accommodating annular groove (33); The accommodating annular groove (33) is arranged between the first elastic cavity (31) and the second elastic cavity (32).

4. The door shock-absorbing cushion according to claim 2, characterized in that: The elastic cavity (3) further includes a slot (34); The clamping groove (34) is provided on the inner side wall of the second elastic cavity (32); The airtight diaphragm (4) is arranged in the card slot (34).

5. The vehicle door shock absorbing cushion according to claim 1, characterized in that: The airtight diaphragm (4) comprises a diaphragm body (41), a vent hole (42) and a support column (43); The support column (43) is arranged directly below the diaphragm body (41) and is connected to the diaphragm body (41); The vent hole (42) is arranged at the exact center of the diaphragm body (41) and passes through the support column (43).

6. The vehicle door shock absorbing cushion according to claim 1, characterized in that: The edge of the installation base plate (1) is also provided with a folded edge (5); The folded edge (5) is perpendicular to the installation base plate (1), and the extension direction of the folded edge (5) is downward.

7. The vehicle door shock-absorbing cushion according to claim 6, characterized in that: It also includes a plurality of magnets (6) and magnet mounting holes (7); The magnet mounting holes (7) are arranged on the folded edge (5) and are located at the four corners of the mounting base plate (1); A plurality of magnets (6) are arranged at the magnet mounting holes (7).

8. The vehicle door shock-absorbing cushion according to claim 7, characterized in that: A glue layer is provided between the magnet (6) and the hole wall of the magnet mounting hole (7).

9. The vehicle door shock absorbing cushion according to claim 1, characterized in that: The mounting hole (2) comprises a first mounting hole (2) and a second mounting hole (2); The first mounting hole (2) and the second mounting hole (2) are arranged opposite to each other on the mounting base plate (1) and are connected to each other.

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