Ball head device, suspension system and vehicle

Abstract

The utility model relates to a ball head device, a suspension system and a vehicle, the ball head device comprises a ball head assembly, an elastic piece and a protective cover, the ball head assembly comprises a ball head shell and a ball head pin, the ball head pin comprises a ball head part and a connecting part, the ball head shell is internally provided with a ball head cavity, and the ball head part is rotatably matched in the ball head cavity; the elastic piece is connected with the protective cover, the elastic piece is elastic and arranged outside the ball head shell in a sleeving mode, the end, away from the elastic piece, of the protective cover is connected with the connecting part, and a sealing cavity is jointly defined by the protective cover, the elastic piece and the connecting part. The ball head device is good in sealing effect.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a ball head device, a suspension system and a vehicle. Background Art

[0002] The noise level and vibration touch in the interior space of a vehicle are important indicators of vehicle comfort, and the vehicle's suspension system can filter and attenuate vibration to improve the vehicle's comfort. The thrust rod of the suspension system is generally connected to the frame through a ball head device. In the related art, the sealing effect of the protective structure of the ball head device is poor. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the utility model provides a ball head device with good sealing effect.

[0005] The embodiment of the utility model further provides a suspension system.

[0006] An embodiment of the utility model further provides a vehicle.

[0007] The ball head device of an embodiment of the utility model includes: a ball head assembly, the ball head assembly includes a ball head shell and a ball head pin, the ball head pin includes a ball head part and a connecting part, the ball head shell has a ball head cavity, and the ball head part is rotatably fitted in the ball head cavity; an elastic member and a protective cover, the elastic member and the protective cover are connected, the elastic member is elastic and is sleeved outside the ball head shell, the end of the protective cover facing away from the elastic member is connected to the connecting part, and the protective cover, the elastic member and the connecting part jointly define a sealing cavity.

[0008] According to the ball head device of the embodiment of the utility model, by arranging an elastic member on the outer side of the ball head shell, the ball head assembly can be buffered and vibration-reduced to reduce the dynamic stiffness of the ball head device. In addition, since the protective cover, the elastic member and the connecting part jointly define a sealed cavity, dust or other impurities can be prevented from entering the sealed cavity through the gap between the protective cover, the elastic member and the connecting part, so as to improve the sealing effect of the ball head device.

[0009] In some embodiments, the ball head assembly also includes a ball head seat, which is installed between the outer wall of the ball head part and the inner wall of the ball head cavity. The ball head seat is provided with a notch, which extends along the axial direction of the ball head seat and is connected to one end of the ball head seat.

[0010] In some embodiments, there are multiple notches, and the multiple notches are arranged at intervals along the circumference of the ball head seat; and / or the thickness of one end of the ball head seat adjacent to the notch is smaller than the thickness of the end of the ball head seat away from the notch.

[0011] In some embodiments, one axial end of the ball head shell has a stop portion, and the stop portion is arranged along the circumference of the ball head cavity. The ball head assembly also includes a clamping ring, which is arranged in the ball head cavity, one side of the clamping ring abuts against the ball head seat, and the other side of the clamping ring abuts against the stop portion.

[0012] In some embodiments, the protective cover has a clamping portion at one end away from the elastic member, a groove is provided on the periphery of the connecting portion, and the ball head device also includes a clamp, which is sleeved on the clamping portion, and the clamping portion is installed in the groove.

[0013] In some embodiments, a notch is provided on the end surface of the elastic member, the notch extends along the axial direction of the elastic member, and the notch is gradually narrowed along the opening direction away from the notch.

[0014] In some embodiments, the ball head device further comprises an outer tube, wherein the outer tube is sleeved on the outside of the elastic member, and at least one of the outer tube and the ball head shell is vulcanized with the elastic member.

[0015] In some embodiments, the elastic member and the protective cover are integrally formed; and / or the sealing cavity (31) is filled with lubricating oil.

[0016] A suspension system according to another embodiment of the present invention comprises a ball head device according to any one of the embodiments of the present invention.

[0017] According to the suspension system of the embodiment of the utility model, by arranging an elastic member on the outer side of the ball head shell, the ball head assembly can be buffered and vibration-reduced to reduce the dynamic stiffness of the ball head device. In addition, since the protective cover, the elastic member and the connecting part jointly define a sealed cavity, dust or other impurities can be prevented from entering the sealed cavity through the gap between the protective cover, the elastic member and the connecting part, so as to improve the sealing effect of the ball head device.

[0018] A vehicle according to another embodiment of the utility model comprises the ball head device or the suspension system described in any one of the embodiments of the utility model.

[0019] According to the vehicle of the embodiment of the utility model, by arranging an elastic member on the outer side of the ball head shell, the ball head assembly can be buffered and vibration-reduced to reduce the dynamic stiffness of the ball head device. In addition, since the protective cover and the elastic member and the connecting part jointly define a sealed cavity, dust or other impurities can be prevented from entering the sealed cavity through the gap between the protective cover, the elastic member and the connecting part, so as to improve the sealing effect of the ball head device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a cross-sectional view of a ball head device according to an embodiment of the utility model.

[0021] Figure 2 It is a schematic diagram of a ball head seat of a ball head device according to an embodiment of the utility model.

[0022] Reference numerals:

[0023] 1. ball head assembly; 11. ball head shell; 111. ball head cavity; 112. stopper; 12. ball head pin; 121. ball head; 122. connecting part; 1221. groove; 13. ball head seat; 131. notch; 14. clamping ring;

[0024] 2. elastic member; 21. notch;

[0025] 3. Protective cover; 31. Sealing chamber; 32. Clamping part;

[0026] 4. External control. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0028] Please refer to the following Figure 1 and Figure 2 A ball head device, a suspension system and a vehicle according to embodiments of the present invention are described.

[0029] like Figure 1 and Figure 2 As shown, the ball head device of the embodiment of the utility model comprises: a ball head assembly 1, an elastic member 2 and a protective cover 3. The ball head assembly 1 comprises a ball head shell 11 and a ball head pin 12, the ball head pin 12 comprises a ball head portion 121 and a connecting portion 122, the ball head shell 11 has a ball head cavity 111, the ball head portion 121 is rotatably fitted in the ball head cavity 111, the elastic member 2 is connected to the protective cover 3, the elastic member 2 is elastic and is sleeved outside the ball head shell 11, the end of the protective cover 3 away from the elastic member 2 is connected to the connecting portion 122, and the protective cover 3, the elastic member 2 and the connecting portion 122 jointly define a sealing cavity 31.

[0030] According to the ball head device of the embodiment of the utility model, by arranging the elastic member 2 on the outer side of the ball head shell 11, the ball head assembly 1 can be buffered and vibration-reduced to reduce the dynamic stiffness of the ball head device. In addition, since the protective cover 3 and the elastic member 2 and the connecting part 122 jointly define a sealed cavity 31, dust or other impurities can be prevented from entering the sealed cavity 31 through the gap between the protective cover 3, the elastic member 2 and the connecting part 122, so as to improve the sealing effect of the ball head device.

[0031] Optionally, the elastic member 2 and the protective cover 3 are integrally formed, which can further improve the sealing effect of the ball head device and reduce the number of parts when assembling the ball head device, making it easier for operators to assemble the ball head device, resulting in lower production costs.

[0032] In the related art, the elastic member 2 and the protective cover 3 are split structures. When assembling the ball head device, one end of the protective cover 3 needs to be clamped with the elastic member 2 or the outer tube 4, and the other end of the protective cover 3 needs to be connected with the connecting portion 122 of the ball head pin 12. When the above connection structure is adopted, the protective cover 3 and the elastic member 2 (ball head shell 11) are easily loosened due to the vibration of the ball head device, and dust or other impurities are easily introduced into the sealing cavity 31 through the gap between the protective cover 3 and the elastic member 2 (ball head shell 11), thereby reducing the reliability of the ball head device when in use.

[0033] The ball head device of the embodiment of the utility model can improve the reliability of the connection between the elastic member 2 and the protective cover 3 by integrally forming the elastic member 2 and the protective cover 3, and no gap will be generated between the elastic member 2 and the protective cover 3, which is conducive to improving the sealing effect of the ball head device. On the other hand, when assembling the ball head device, it is not necessary to connect the elastic member 2 and the protective cover 3 through a clamp or other fasteners, thereby reducing the number of assembled parts and components, thereby reducing production costs.

[0034] In one example, the elastic member 2 and the protective cover 3 are both rubber members. The elastic member 2 and the protective cover 3 can be integrally formed by vulcanization. In the example of the present application, the elastic member 2 is a rubber main spring.

[0035] Optionally, the ball head device further comprises an outer tube 4, which is sleeved on the outer side of the elastic member 2. It is understandable that the elastic member 2 is arranged between the outer tube 4 and the ball head shell 11. The connecting portion 122 is suitable for connecting to the frame of the vehicle, and the outer tube 4 is suitable for connecting to the thrust rod of the suspension system. In other words, the ball head device of the embodiment of the utility model is connected between the thrust rod of the suspension system and the frame.

[0036] Alternatively, if Figure 1 and Figure 2As shown, the ball head assembly 1 further includes a ball head seat 13, which is installed between the outer wall of the ball head 121 and the inner wall of the ball head cavity 111. The ball head seat 13 is rotatably sleeved on the outer wall of the ball head 121, and the ball head seat 13 is relatively fixed to the ball head cavity 111. It can be understood that by arranging the ball head seat 13 between the ball head shell 11 and the ball head 121, it is convenient to axially fix the ball head 121. In other words, the ball head seat 13 can axially limit the ball head 121 to improve the stability of the installation of the ball head assembly 1.

[0037] It should be noted that the inner wall of the ball head seat 13 and the outer wall of the ball head 121 are rotatably matched in a spherical contact manner, that is, the ball head 121 can swing up and down and forward and backward relative to the ball head seat 13, and the ball head 121 can also rotate along the axis of the connecting part 122.

[0038] For example, one end of the ball seat 13 (such as Figure 1 The outer wall surface of the left end of the ball head seat 13 is a hemispherical surface, and the other end of the ball head seat 13 (such as Figure 1 The outer wall surface of the right end of the middle ball head seat 13 is a cylindrical surface, and the inner wall surface of the ball head cavity 111 matches the outer wall surface of the ball head seat 13.

[0039] Alternatively, if Figure 2 As shown, the ball head seat 13 is provided with a notch 131, the notch 131 extends along the axial direction of the ball head seat 13, and the notch 131 is connected to one end of the ball head seat 13 (such as Figure 1 The ball head seat 13 is connected to the left end of the ball head seat 13 in the middle. For example, the ball head seat 13 can be made of POM. The ball head device of the embodiment of the utility model is provided with a notch 131 on the ball head seat 13, which helps the port at one end of the ball head seat 13 to deform (expand) under the action of external force, so that the ball head seat 13 is sleeved on the ball head 121 along the axial direction of the connecting portion 122, thereby improving the installation efficiency of the ball head seat 13 and the ball head 121.

[0040] Specifically, Figure 2 As shown, there are multiple notches 131, and the multiple notches 131 are arranged at intervals along the circumference of the ball head seat 13. In one example, there are four notches 131, and the four notches 131 are arranged at equal intervals along the circumference of the ball head seat 13, thereby further improving the convenience of installing the ball head seat 13 and the ball head 121.

[0041] Furthermore, the thickness of the end of the ball head seat 13 adjacent to the notch 131 is smaller than the thickness of the end of the ball head seat 13 away from the notch 131. Figure 2 As shown, the thickness of the left end of the ball head seat 13 is less than the thickness of the right end of the ball head seat 13, so that when the ball head seat 13 is installed, the left end of the ball head seat 13 is more likely to deform, so as to reduce the difficulty of assembling the ball head seat 13 and the ball head 121.

[0042] In one example, the sealing cavity 31 is filled with lubricating oil, in other words, the sealing cavity 31 can store lubricating oil, thereby lubricating the rotation between the ball head seat 13 and the ball head 121 to reduce wear and extend the service life of the ball head device.

[0043] In some embodiments, Figure 1 As shown, one end of the ball head shell 11 in the axial direction has a stopper 112, and the stopper 112 is arranged along the circumference of the ball head cavity 111. The ball head assembly 1 also includes a clamping ring 14, which is arranged in the ball head cavity 111, one side of the clamping ring 14 abuts against the ball head seat 13, and the other side of the clamping ring 14 abuts against the stopper 112. It can be understood that in order to prevent the ball head seat 13 and the ball head 121 from axially moving along the ball head shell 11, the ball head seat 13 can be limited by the clamping ring 14. When the ball head device needs to be disassembled, the clamping ring 14 can be disassembled first, and then the ball head seat 13 and the ball head 121 can be separated from the ball head shell 11. Therefore, the ball head device of the embodiment of the utility model can facilitate the operator to install and disassemble the ball head shell 11 and the ball head pin 12 by setting the ball head assembly 1 to the above-mentioned structure, and the stability after installation is better.

[0044] Alternatively, if Figure 1 As shown, the end of the protective cover 3 facing away from the elastic member 2 has a clamping portion 32, the outer periphery of the connecting portion 122 is provided with a groove 1221, and the ball head device further includes a clamp (not shown), the clamp is sleeved on the clamping portion 32, and the clamping portion 32 is installed in the groove 1221. It can be understood that installing the clamping portion 32 in the groove 1221 can increase the contact area between the protective cover 3 and the connecting portion 122 to improve the sealing effect between the protective cover 3 and the connecting portion 122, and the clamp can limit the clamping portion 32 to prevent the clamping portion 32 from slipping out of the groove 1221, thereby ensuring the stability of the connection between the clamping portion 32 and the connecting portion 122.

[0045] In the example of this application, Figure 1 As shown, there are two connecting parts 122, which are arranged on both sides of the ball head 121 in the radial direction, and the two connecting parts 122 are arranged coaxially. Correspondingly, there are two protective covers 3, which are arranged on both sides of the elastic member 2 and connected to the two connecting parts 122 respectively.

[0046] In some embodiments, Figure 1 As shown, a notch 21 is provided on the end surface of the elastic member 2, the notch 21 extends along the axial direction of the elastic member 2, and the notch 21 is gradually narrowed along the opening direction away from the notch 21. The inventor of the present application has found through experimental research that the notch 21 structure provided on the elastic member 2 can improve the torsional fatigue performance of the elastic member 2 and extend the service life of the elastic member 2.

[0047] For example, Figure 1 As shown, the notch 21 is generally annular and is arranged circumferentially around the end surface of the elastic member 2, and there are two notches 21, which are arranged on both sides of the axial direction of the elastic member 2, thereby further improving the torsional fatigue performance of the elastic member 2 and extending the service life of the elastic member 2.

[0048] In the specific example of the present application, the elastic member 2 is a rubber main spring. The elastic member 2 (rubber main spring) is a sleeve-shaped structure, the outer wall of the elastic member 2 is fitted and connected to the inner wall of the outer tube 4, and the inner wall of the elastic member 2 is fitted and connected to the outer wall of the ball head shell 11. The length of the outer tube 4 is greater than the length of the elastic member 2 and the ball head shell 11. In other words, the elastic member 2 and the ball head shell 11 are both located in the cavity surrounded by the outer tube 4 to protect the elastic member 2 and the ball head shell 11.

[0049] Since notches 21 are provided at both ends of the axial direction of the elastic member 2, the structure of the elastic member 2 is roughly divided into two layers, an inner layer and an outer layer. The protective cover 3 is connected to the outer layer of the elastic member 2, in other words, the protective cover 3 is connected to the outer ring position of the notch 21, and the connection position of the protective cover 3 and the elastic member 2 is located in the cavity surrounded by the outer tube 4, so as to improve the protection effect of the connection position of the protective cover 3 and the elastic member 2.

[0050] Optionally, at least one of the outer tube 4 and the ball head shell 11 is vulcanized with the elastic member 2. In the example of the present application, the outer tube 4 is vulcanized with the elastic member 2, and the ball head shell 11 is vulcanized with the elastic member 2, thereby ensuring the reliability of the connection of the ball head device and having a better vibration reduction effect.

[0051] A suspension system according to another embodiment of the present invention comprises the ball head device according to the embodiment of the present invention.

[0052] According to the suspension system of the embodiment of the utility model, by arranging the elastic member 2 on the outer side of the ball head shell 11, the ball head assembly 1 can be buffered and vibration-reduced to reduce the dynamic stiffness of the ball head device. In addition, since the protective cover 3 and the elastic member 2 and the connecting part 122 jointly define a sealed cavity 31, dust or other impurities can be prevented from entering the sealed cavity 31 through the gap between the protective cover 3, the elastic member 2 and the connecting part 122, so as to improve the sealing effect of the ball head device.

[0053] A vehicle of another embodiment of the utility model comprises the ball head device or suspension system of the embodiment of the utility model. The technical advantages of the vehicle of the embodiment of the utility model are the same as the technical advantages of the ball head device or suspension system of the above embodiment, which will not be repeated here.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0059] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present invention.

Claims

1. A ball head device, characterized in that: include: A ball head assembly (1), the ball head assembly (1) comprising a ball head shell (11) and a ball head pin (12), the ball head pin (12) comprising a ball head portion (121) and a connecting portion (122), the ball head shell (11) having a ball head cavity (111), the ball head portion (121) rotatably fitting in the ball head cavity (111); An elastic member (2) and a protective cover (3), wherein the elastic member (2) and the protective cover (3) are connected, the elastic member (2) is elastic and is sleeved outside the ball head shell (11), one end of the protective cover (3) facing away from the elastic member (2) is connected to the connecting portion (122), and the protective cover (3) and the elastic member (2) and the connecting portion (122) jointly define a sealing cavity (31).

2. The ball head device according to claim 1, characterized in that: The ball head assembly (1) further comprises a ball head seat (13), wherein the ball head seat (13) is installed between the outer wall of the ball head portion (121) and the inner wall of the ball head cavity (111), and a notch (131) is provided on the ball head seat (13), wherein the notch (131) extends along the axial direction of the ball head seat (13), and the notch (131) is connected to one end of the ball head seat (13).

3. The ball head device according to claim 2, characterized in that: There are a plurality of notches (131), and the plurality of notches (131) are arranged at intervals along the circumference of the ball head seat (13); And / or, the thickness of one end of the ball head seat (13) adjacent to the notch (131) is smaller than the thickness of one end of the ball head seat (13) away from the notch (131).

4. The ball head device according to claim 2, characterized in that: One axial end of the ball head shell (11) is provided with a stop portion (112), and the stop portion (112) is arranged along the circumference of the ball head cavity (111). The ball head assembly (1) also includes a clamping ring (14), and the clamping ring (14) is arranged in the ball head cavity (111), one side of the clamping ring (14) is in contact with the ball head seat (13), and the other side of the clamping ring (14) is in contact with the stop portion (112).

5. The ball head device according to claim 1, characterized in that: The end of the protective cover (3) facing away from the elastic member (2) has a clamping portion (32), the outer periphery of the connecting portion (122) is provided with a groove (1221), and the ball head device also includes a clamping hoop, which is sleeved on the clamping portion (32), and the clamping portion (32) is installed in the groove (1221).

6. The ball head device according to claim 1, characterized in that: A notch (21) is provided on the end surface of the elastic member (2), the notch (21) extends along the axial direction of the elastic member (2), and the notch (21) is arranged to gradually narrow in an opening direction away from the notch (21).

7. The ball head device according to claim 1, characterized in that: The ball head device further comprises an outer tube (4), wherein the outer tube (4) is sleeved on the outer side of the elastic member (2), and at least one of the outer tube (4) and the ball head shell (11) is vulcanized with the elastic member (2).

8. The ball head device according to any one of claims 1 to 7, characterized in that: The elastic member (2) and the protective cover (3) are integrally formed; And / or, the sealing cavity (31) is filled with lubricating oil.

9. A suspension system, characterized in that: A ball head device comprising any one of claims 1-8.

10. A vehicle, characterized in that: The invention comprises the ball head device according to any one of claims 1 to 8 or the suspension system according to claim 9.

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