Support ball head assembly, supporting rod assembly and vehicle

Abstract

The utility model belongs to the technical field of electric supporting rods, and discloses a support ball head assembly, a supporting rod assembly and a vehicle, the support ball head assembly comprises a support ball head and a ball seat, the support ball head comprises a ball head body, a ball head neck part and a ball head connecting part which are sequentially connected, the ball head connecting part is fixed, the diameter of the ball head neck part is smaller than that of the ball head body, and the ball seat is connected with the ball head body. The ball seat is provided with a ball socket embedded into the ball head body, the ball head body is in ball hinge joint with the ball seat, so that the inner wall of the ball socket can abut against the neck of the ball head, the contact position of the inner wall of the ball socket and the neck of the ball head is coated with an elastic wear-resistant layer, the wear rate of the elastic wear-resistant layer is smaller than that of the ball socket, and the elastic wear-resistant layer at least forms a surface making contact with the neck of the ball head. According to the support ball head assembly, the supporting rod assembly and the vehicle, abnormal sound caused by collision between the ball socket and the neck of the ball head can be effectively prevented, noise is lowered, abrasion to a coating of the support ball head is reduced, and corrosion resistance and attractiveness are improved.

Description

Technical Field

[0001] This utility model relates to the field of electric strut technology, and in particular to the bracket ball joint assembly, strut assembly and vehicle. Background Technology

[0002] Electric struts are widely used in modern vehicles, especially in the opening and closing systems of car doors, hoods, and other components. These strut systems not only require sufficient strength and stability to ensure smooth and reliable movement of components, but also need to minimize noise and wear to improve the user experience and the overall quality of the vehicle.

[0003] In traditional electric strut designs, the large gap between the plastic ball socket and the metal bracket ball head causes a noticeable knocking sound during electric operation. This not only affects the vehicle's noise reduction performance but may also wear down the electrophoretic paint on the surface of the metal bracket ball head, thus affecting its corrosion resistance and aging resistance.

[0004] In existing technology, the gap between the plastic ball joint and the metal support ball joint is reduced by thickening the neck of the metal support ball joint to avoid abnormal noise between the plastic ball joint and the metal support ball joint during electric operation. However, most metal support ball joints are standard parts, and it is not possible to use the method of thickening the neck of the metal support ball joint to reduce the gap between the metal support ball joint and the plastic ball joint, resulting in poor flexibility. Utility Model Content

[0005] The purpose of this utility model is to provide a bracket ball joint assembly, a strut assembly, and a vehicle that can reduce noise, reduce wear, and provide high flexibility without changing the bracket ball joint structure.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The ball joint assembly includes:

[0008] A support ball head, comprising a ball head body, a ball head neck, and a ball head connecting portion connected in sequence, wherein the ball head connecting portion is fixed, and the diameter of the ball head neck is smaller than the diameter of the ball head body;

[0009] A ball seat has a socket that is embedded in the ball head body. The ball head body is ball-hinged to the ball seat so that the inner wall of the socket can abut against the ball head neck. The contact area between the inner wall of the socket and the ball head neck is covered with an elastic wear-resistant layer. The wear rate of the elastic wear-resistant layer is less than the wear rate of the socket. The elastic wear-resistant layer at least forms a surface that contacts the ball head neck.

[0010] Optionally, the support ball joint assembly further includes a retaining ring, which includes a first retaining portion and a second retaining portion disposed opposite to each other, and a limiting portion connected to the first retaining portion and the second retaining portion. The limiting portion is located outside the ball seat. The side wall of the ball seat is provided with a first clearance hole and a second clearance hole. The first clearance hole is used to pass through the first retaining portion and abut against the ball head neck. The second clearance hole is used to pass through the second retaining portion and abut against the ball head neck. The ball head neck is located between the first retaining portion and the second retaining portion.

[0011] Optionally, both the first and second locking portions have an arc surface at the end away from the limiting portion, and the arc surface can abut against the outer peripheral surface of the ball head neck.

[0012] Optionally, the ball head body and at least a portion of the ball head neck are located in the ball socket, and the ball head connector extends to the outside of the ball seat.

[0013] Optionally, the diameter of the outer peripheral surface of the ball head neck gradually increases from the ball head body to the ball head connection portion.

[0014] Optionally, the support ball head is a one-piece molded structural component.

[0015] The strut assembly includes:

[0016] Two of the aforementioned support ball joint assemblies;

[0017] The housing has two bracket ball joint assemblies located at both ends of the housing along its own axial direction, one of the bracket ball joint assemblies being used to connect to the vehicle body and the other bracket ball joint assembly being used to connect to the vehicle door;

[0018] The strut body is movably mounted on the housing and is fixedly connected to the ball seat connected to the door.

[0019] A telescopic unit, the output end of which is fixedly connected to the support rod body, is used to drive the support rod body to extend and retract along its own axial direction.

[0020] Optionally, the telescopic unit includes:

[0021] A first driving component is mounted on the housing;

[0022] A lead screw is rotatably connected to the housing and extends axially along the main body of the support rod. The lead screw is connected to the output end of the first driving member, which is used to drive the lead screw to rotate.

[0023] A nut is connected to the lead screw and configured to reciprocate linearly along the axial direction of the support rod body. The nut is fixed to the support rod body.

[0024] Optionally, the strut further includes an elastic element, which is sleeved outside the strut body and embedded in the housing. One end of the elastic element is fixed to the housing, and the other end is fixed to the ball seat connected to the strut body.

[0025] The vehicle, including the strut assembly.

[0026] The beneficial effects of this utility model are:

[0027] The bracket ball joint assembly, strut assembly, and vehicle provided by this utility model have a fixed ball joint connection portion, with the ball joint body inserted into the ball socket of the ball seat. The ball seat provides support for the bracket ball joint, which can rotate relative to the ball joint body. Since the diameter of the ball joint neck is smaller than that of the ball joint body, the gap between the inner wall of the ball socket and the ball joint neck is larger. During rotation, the inner wall of the ball socket can abut against the ball joint neck. By covering the contact position between the inner wall of the ball socket and the ball joint neck with an elastic wear-resistant layer, without changing the structure of the bracket ball joint, it can effectively prevent the collision between the inner wall of the ball socket and the ball joint neck during operation, thus reducing noise and reducing wear on the surface coating of the bracket ball joint, improving the corrosion resistance and aesthetics of the bracket ball joint. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the support ball head assembly provided in this embodiment of the utility model;

[0029] Figure 2 This is a schematic diagram of the structure of the support ball head provided in this embodiment of the utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the ball seat provided in this embodiment of the utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the retaining ring provided in this embodiment of the utility model;

[0032] Figure 5 This is a structural schematic diagram of the strut assembly provided in this embodiment of the utility model;

[0033] Figure 6 This is an exploded view of the strut assembly provided in the embodiment of this utility model.

[0034] In the diagram: 1. Ball head support; 11. Ball head body; 12. Ball head neck; 13. Ball head connector;

[0035] 2. Ball seat; 21. Elastic wear-resistant layer;

[0036] 3. Snap ring; 31. First snap-fit ​​part; 32. Second snap-fit ​​part; 33. Limiting part;

[0037] 4. Housing; 5. Support rod body; 6. First driving component; 7. Lead screw; 8. Protective shell; 9. Elastic component. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0039] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0042] This utility model provides a bracket ball joint assembly, a strut assembly including the bracket ball joint assembly, and a vehicle including the strut assembly. The strut assembly is used to open and close a vehicle door or hood. Exemplarily, the strut assembly opens and closes a vehicle door. The following description uses the example of the strut assembly being installed between the vehicle body and the vehicle door to provide a detailed description of the strut assembly.

[0043] like Figure 1-4 As shown, an embodiment of the present invention provides a support ball joint assembly, including a support ball joint 1 and a ball seat 2. The support ball joint 1 includes a ball joint body 11, a ball joint neck 12, and a ball joint connecting portion 13 connected in sequence. The ball joint connecting portion 13 is fixed. The diameter of the ball joint neck 12 is smaller than the diameter of the ball joint body 11. The ball seat 2 has a socket that is embedded in the ball joint body 11. The ball joint body 11 and the ball seat 2 are ball-hinged so that the inner wall of the socket can abut against the ball joint neck 12. The contact position between the inner wall of the socket and the ball joint neck 12 is covered with an elastic wear-resistant layer 21. The wear rate of the elastic wear-resistant layer 21 is less than the wear rate of the socket. The elastic wear-resistant layer 21 forms at least the surface that contacts the ball joint neck 12.

[0044] The ball joint 13 of the support ball head 1 is fixed, and the ball head body 11 is inserted into the ball socket of the ball seat 2. The ball seat 2 provides support for the support ball head 1. The ball seat 2 can rotate relative to the ball head body 11. Since the diameter of the ball neck 12 is smaller than that of the ball head body 11, the gap between the inner wall of the ball socket and the ball neck 12 is larger. During rotation, the inner wall of the ball socket can abut against the ball neck 12. By covering the contact position between the inner wall of the ball socket and the ball neck 12 with an elastic wear-resistant layer 21, without changing the structure of the support ball head 1, it can effectively prevent the collision between the inner wall of the ball socket and the ball neck 12 during operation and generate abnormal noise, reduce noise, and at the same time reduce the wear on the surface coating of the support ball head 1, and improve the corrosion resistance and aesthetics of the support ball head 1.

[0045] Specifically, the elastic wear-resistant layer 21 on the inner wall of the ball socket is made of soft rubber material. The soft rubber material is encapsulated on the inner wall of the ball socket through a two-color injection molding or secondary encapsulation process. Since the soft rubber material is a thermoplastic elastomer, the soft rubber material can effectively avoid knocking noise between the ball socket and the support ball head 1 when it impacts or adheres to the support ball head 1, and reduce the wear of the electrophoretic paint on the surface of the support ball head 1.

[0046] For example, the ball joint connector 13 is fixed to the vehicle body. In other embodiments, the ball joint connector 13 may also be fixed to a door or a hood.

[0047] For example, such as Figure 2As shown, the diameter of the outer circumference of the ball head neck 12 gradually increases from the ball head body 11 to the ball head connecting portion 13. The generatrix of the ball head neck 12 is a straight line, i.e., it adopts a frustum structure, which facilitates processing and production. In other embodiments, the generatrix of the ball head neck 12 can also be an arc, and the minimum diameter of the ball head neck 12 is smaller than the diameter of the ball head body 11 and smaller than the diameter of the ball head connecting portion 13.

[0048] Furthermore, the support ball head 1 is a one-piece molded structural component, which facilitates processing and mass production.

[0049] Furthermore, the support ball joint assembly also includes a retaining ring 3, which includes a first retaining portion 31 and a second retaining portion 32 disposed opposite to each other, and a limiting portion 33 connected to the first retaining portion 31 and the second retaining portion 32. The limiting portion 33 is located outside the ball seat 2. The side wall of the ball seat 2 is provided with a first clearance hole and a second clearance hole. The first clearance hole is used to pass through the first retaining portion 31 and abut against the ball neck 12. The second clearance hole is used to pass through the second retaining portion 32 and abut against the ball neck 12. The first clearance hole and the second clearance hole communicate with the ball socket. The ball neck 12 is located between the first retaining portion 31 and the second retaining portion 32.

[0050] like Figure 3 , 4 As shown, the retaining ring 3 is fitted onto the ball seat 2. The limiting part 33 has a C-shaped structure. The inner wall surface of the limiting part 33 is in contact with the outer wall surface of the ball seat 2. The first locking part 31 and the second locking part 32 are symmetrically arranged. The limiting part 33 is located on the same side of the first clearance hole and the second clearance hole. The distance between the first locking part 31 and the second locking part 32 is less than the diameter of the ball head body 11 and greater than the minimum diameter of the ball head neck 12. This allows the retaining ring 3 to limit the support ball head 1, preventing the support ball head 1 from falling out of the ball socket during operation and improving the reliability of the connection between the support ball head 1 and the ball seat 2.

[0051] Furthermore, both the first locking portion 31 and the second locking portion 32 have an arc-shaped surface at the end away from the limiting portion 33, and the arc-shaped surface can abut against the outer peripheral surface of the ball head neck 12. With this arrangement, the arc-shaped surfaces of the first locking portion 31 and the second locking portion 32 are conducive to locking and engaging with the ball head neck 12, which can prevent the ball head body 11 from dislodging from the ball socket.

[0052] Furthermore, the ball head body 11 and at least part of the ball head neck 12 are located in the ball socket, and the ball head connecting portion 13 extends to the outside of the ball seat 2. The ball head body 11 is rotatably connected to the ball socket, and the elastic wear-resistant layer 21 on the side walls of the ball socket can abut against the ball head neck 12. The ball head connecting portion 13 extends to the outside of the ball seat 2 to facilitate fixing the ball head connecting portion 13.

[0053] like Figure 5 , 6As shown, an embodiment of this utility model provides a strut assembly, including a housing 4, a strut body 5, a telescopic unit, and two of the aforementioned bracket ball joint assemblies. The two bracket ball joint assemblies are located at both ends of the housing 4 along its own axial direction. One bracket ball joint assembly is used to connect to the vehicle body, and the other bracket ball joint assembly is used to connect to the vehicle door. The strut body 5 is movably installed on the housing 4. The strut body 5 is fixedly connected to the ball seat 2 connected to the vehicle door. The output end of the telescopic unit is fixedly connected to the strut body 5. The telescopic unit is used to drive the strut body 5 to extend and retract along its own axial direction.

[0054] When the vehicle door needs to be opened, the telescopic unit drives the support rod body 5 to extend along its own axis. The support rod body 5 pushes the connected bracket ball joint assembly to move, and the door can be opened under the pushing action of the support rod body 5. At the same time, the support rod body 5 also plays a supporting role. When the vehicle door needs to be closed, the telescopic unit drives the support rod body 5 to retract along its own axis. The support rod body 5 pulls the connected bracket ball joint assembly to move, and the door can be closed under the pulling action of the support rod body 5.

[0055] For example, the telescopic unit includes a first drive member 6, a lead screw 7, and a nut. The first drive member 6 is mounted on the housing 4, the lead screw 7 is rotatably connected to the housing 4, the lead screw 7 extends axially along the support body 5, and the lead screw 7 is connected to the output end of the first drive member 6. The first drive member 6 is used to drive the lead screw 7 to rotate. The nut is drively connected to the lead screw 7 and is configured to reciprocate linearly along the axial direction of the support body 5. The nut is fixed to the support body 5. Specifically, the first drive member 6 is a motor.

[0056] For example, the nut is threadedly connected to the lead screw 7 and fixed to the support rod body 5. The output end of the first drive member 6 rotates, causing the lead screw 7 to rotate. Since the nut is configured to reciprocate linearly along the axial direction of the support rod body 5, the rotation of the lead screw 7 causes the nut to move along the axial direction of the support rod body 5. The nut causes the support rod body 5 to move along the axial direction of the support rod body 5, and the support rod body 5 causes the ball seat 2 connected to it to move together, so that the support rod body 5 can push open or close the vehicle door. In other embodiments, the nut can also be connected to the lead screw 7 via a ball bearing structure.

[0057] The output end of the first driving member 6 can be rotated in the forward direction to extend the support rod body 5 to push the door open, and the output end of the first driving member 6 can be rotated in the reverse direction to retract the support rod body 5 to pull the door close, so as to facilitate the opening or closing of the door.

[0058] In other embodiments, the drive unit may also be a telescopic cylinder, the output end of which is fixedly connected to the support rod body 5. The output end of the telescopic cylinder extends and retracts along the axial direction of the support rod body 5, and the door can be opened or closed by extending and retracting the output end of the telescopic cylinder.

[0059] Furthermore, such as Figure 6 As shown, the strut also includes an elastic element 9, which is sleeved outside the strut body 5 and embedded in the housing 4. One end of the elastic element 9 is fixed to the housing 4, and the other end is fixed to the ball seat 2 connected to the strut body 5.

[0060] When the strut body 5 extends, the elastic element 9 is stretched and stores elastic potential energy. When the strut body 5 retracts, the elastic element 9 gradually releases elastic potential energy, which buffers the ball seat 2. Since the shell 4 and the strut body 5 have a certain limiting effect on the elastic element 9, during the reset process of the elastic element 9, the elastic element 9 only bears the force in its own axial direction, which can prevent the elastic element 9 from twisting due to lateral force. In this way, the ball seat 2 connected to the elastic element 9 will not be damaged by lateral force, effectively extending the service life of the ball seat 2.

[0061] like Figure 6 As shown, all the above components are located inside the housing 4. The housing 4 can protect and isolate each component, which not only improves the aesthetics but also ensures the stable operation of each component.

[0062] Furthermore, a protective shell 8 is provided on the outer side of the first driving component 6. The protective shell 8 is located inside the housing 4. Under the dual protection of the housing 4 and the protective shell 8, the protection of the first driving component 6 is further strengthened, ensuring the working performance of the first driving component 6.

[0063] An embodiment of this utility model provides a vehicle, including a vehicle body, a door mounted on the vehicle body, and the aforementioned strut assembly, which is disposed between the vehicle body and the door. By disposing of the strut assembly between the vehicle body and the door, the noise of the strut assembly during the opening and closing of the door can be reduced, and the wear on the coating of the bracket ball joint 1 during operation can be minimized.

[0064] It should be noted that the strut assembly can also be installed between the hood and the vehicle body, which can reduce the noise of the strut assembly during the opening and closing of the hood and reduce the wear on the coating of the bracket ball head 1 during operation. This will not be described again here.

[0065] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A stent ball assembly, characterized by, include: The support ball head (1) includes a ball head body (11), a ball head neck (12) and a ball head connecting part (13) connected in sequence. The ball head connecting part (13) is fixed. The diameter of the ball head neck (12) is smaller than the diameter of the ball head body (11). A ball seat (2) has a ball socket that is embedded in the ball head body (11). The ball head body (11) is ball-hinged with the ball seat (2) so that the inner wall of the ball socket can abut against the ball head neck (12). The contact position between the inner wall of the ball socket and the ball head neck (12) is covered with an elastic wear-resistant layer (21). The wear rate of the elastic wear-resistant layer (21) is less than the wear rate of the ball socket. The elastic wear-resistant layer (21) forms at least a surface that contacts the ball head neck (12).

2. The bolster ball assembly of claim 1, wherein, The ball joint assembly of the bracket also includes a retaining ring (3), which includes a first retaining part (31) and a second retaining part (32) disposed opposite to each other, and a limiting part (33) connected to the first retaining part (31) and the second retaining part (32). The limiting part (33) is located outside the ball seat (2). The side wall of the ball seat (2) is provided with a first clearance hole and a second clearance hole. The first clearance hole is used to pass through the first retaining part (31) and abut against the ball neck (12). The second clearance hole is used to pass through the second retaining part (32) and abut against the ball neck (12). The ball neck (12) is located between the first retaining part (31) and the second retaining part (32).

3. The stent ballast assembly of claim 2, wherein, Both the first snap-fit ​​portion (31) and the second snap-fit ​​portion (32) have an arc surface at the end away from the limiting portion (33), and the arc surface can abut against the outer peripheral surface of the ball head neck (12).

4. The bolster ball assembly of claim 1, wherein, The ball head body (11) and at least part of the ball head neck (12) are located in the ball socket, and the ball head connector (13) extends to the outside of the ball seat (2).

5. The support ball joint assembly according to claim 1, characterized in that, From the ball head body (11) to the ball head connecting part (13), the diameter of the outer peripheral surface of the ball head neck (12) gradually increases.

6. The support ball joint assembly according to claim 1, characterized in that, The support ball head (1) is an integrally formed structural component.

7. A strut assembly, characterized in that, include: Two support ball joint assemblies as described in any one of claims 1-6; The housing (4) has two bracket ball joint assemblies located at both ends of the housing (4) along its own axial direction, one of the bracket ball joint assemblies being used to connect to the vehicle body and the other bracket ball joint assembly being used to connect to the vehicle door; The strut body (5) is movably mounted on the housing (4) and is fixedly connected to the door ball seat (2); The telescopic unit is fixedly connected to the support rod body (5) at its output end. The telescopic unit is used to drive the support rod body (5) to extend and retract along its own axis.

8. The strut assembly according to claim 7, characterized in that, The telescopic unit includes: A first driving member (6) is mounted on the housing (4); A lead screw (7) is rotatably connected to the housing (4). The lead screw (7) extends along the axial direction of the support body (5). The lead screw (7) is connected to the output end of the first drive member (6). The first drive member (6) is used to drive the lead screw (7) to rotate. The nut is connected to the lead screw (7) and is configured to reciprocate linearly along the axial direction of the strut body (5). The nut is fixed to the strut body (5).

9. The strut assembly according to claim 7, characterized in that, The strut also includes an elastic element (9), which is sleeved on the outside of the strut body (5) and embedded in the housing (4). One end of the elastic element (9) is fixed to the housing (4), and the other end is fixed to the ball seat (2) connected to the strut body (5).

10. A vehicle, characterized in that, The vehicle includes a vehicle body, a door mounted on the vehicle body, and a strut assembly as described in any one of claims 7-9, the strut assembly being disposed between the vehicle body and the door.

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