Ball head base, ball head connecting rod, ball head pin device, upper swing arm assembly, suspension mechanism and vehicle

Abstract

The utility model discloses a ball head base, a ball head connecting rod, a ball head pin device, an upper swing arm assembly, a suspension mechanism and a vehicle. The ball head base comprises a base body which is provided with a spherical groove, and the spherical groove is used for being rotationally connected with the ball head connecting rod; a first positioning structure is arranged on the surface of the spherical groove and arranged in the rotating direction of the ball head connecting rod. The ball head connecting rod comprises a ball head used for being connected with a ball head base; a second positioning structure is arranged on the surface of the ball head, the second positioning structure is used for being connected with the first positioning structure of the ball head base, and the second positioning structure can slide relative to the first positioning structure. The ball pin device comprises a ball base and a ball connecting rod. The limiting mechanisms capable of being in sliding fit are arranged on the ball head base and the ball head connecting rod, so that the ball head connecting rod can safely rotate relative to the ball head base at a large swing angle, and conditions are provided for shortening the length of the swing arm.

Description

Technical Field

[0001] The utility model generally relates to the technical field of suspension mechanisms, and more specifically relates to a ball head base, a ball head connecting rod, a ball head pin device, an upper swing arm assembly, a suspension mechanism and a vehicle. Background Art

[0002] The existing double wishbone suspension mechanism usually includes a subframe, a lower arm, a shock absorber, an upper arm, etc., and each part is hinged to meet the rotation requirements. Among them, a ball pin assembly is arranged at the hinge position of the upper arm and the shock absorber or the subframe. With the development of technology, the installation space in the frame is getting smaller and smaller, and it is difficult to increase the swing angle while reducing the size. The main reason is that the ball pin assembly is in danger of separation during this process, which creates a safety hazard.

[0003] Therefore, it is necessary to provide a ball head base, a ball head connecting rod, a ball head pin device, an upper swing arm assembly, a suspension mechanism and a vehicle to at least partially solve the above problems. Utility Model Content

[0004] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0005] In order to at least partially solve the above problems, the first aspect of the utility model provides a ball head base, comprising:

[0006] A seat body, wherein the seat body is provided with a spherical groove, and the spherical groove is used for rotationally connecting with the ball head connecting rod;

[0007] Wherein, a first positioning structure is arranged on the surface of the spherical groove, and the first positioning structure is arranged along the rotation direction of the ball head connecting rod.

[0008] Optionally, the first positioning structure is an arc-shaped groove or an arc-shaped protrusion.

[0009] Optionally, along the extension direction of the arc groove, the depth at both ends of the arc groove is greater than the depth in the middle of the arc groove, or, along the extension direction of the arc protrusion, the height of the arc protrusion close to the edge of the spherical groove is greater than the height of the arc protrusion close to the middle of the spherical groove.

[0010] Optionally, the depth of the arc-shaped groove gradually decreases from both ends to the middle, or the height of the arc-shaped protrusion gradually decreases from close to the edge of the spherical groove to close to the middle of the spherical groove.

[0011] Optionally, the first positioning structure is an arc-shaped groove, and two ends of the arc-shaped groove are symmetrically arranged at the edge of the spherical groove relative to the axis of the seat body;

[0012] Alternatively, the first positioning structure is two arc-shaped protrusions, and the two arc-shaped protrusions are symmetrically arranged at the edge of the spherical groove relative to the axis of the seat body.

[0013] Optionally, the ball head base further comprises:

[0014] The first clamping groove is arranged close to the notch of the spherical groove, and the first clamping groove is used to connect the ball head limiting seat.

[0015] Optionally, the slot is circular and is coaxially arranged with the seat body.

[0016] Optionally, a limiting portion is provided on the side of the seat body, and the limiting portion is used to connect the swing arm body. The limiting portion includes a spring clamp, a second clamping groove and a limiting flange. The second clamping groove and the limiting flange are arranged on the side of the seat body along the axial direction of the seat body and are spaced a predetermined distance apart. The spring clamp is detachably arranged in the second clamping groove.

[0017] Optionally, the surface of the spherical groove is provided with a soft lining.

[0018] A second aspect of the utility model provides a ball head connecting rod, comprising:

[0019] A ball head, the ball head is used to connect to a ball head base;

[0020] Wherein, a second positioning structure is provided on the surface of the ball head, and the second positioning structure is used to be connected to the first positioning structure of the ball head base, and the second positioning structure can slide relative to the first positioning structure.

[0021] Optionally, the second positioning structure is an arc-shaped protrusion or an arc-shaped groove.

[0022] Optionally, along the extension direction of the arc-shaped protrusion, the height of the arc-shaped protrusion close to the root of the ball head is greater than the height of the arc-shaped protrusion close to the top of the ball head, or, along the extension direction of the arc-shaped groove, the depth at both ends of the arc-shaped groove is greater than the depth in the middle of the arc-shaped groove.

[0023] Optionally, the height of the arc-shaped protrusion gradually decreases from close to the root of the ball head to close to the top of the ball head, or the depth of the arc-shaped groove gradually decreases from both ends to the middle.

[0024] Optionally, the second positioning structure is two arc-shaped protrusions, and the two arc-shaped protrusions are symmetrically arranged at the root of the ball head relative to the axis of the ball head;

[0025] Alternatively, the second positioning structure is an arc-shaped groove, and two ends of the arc-shaped groove are symmetrically arranged at the root of the ball head relative to the axis of the seat body.

[0026] Optionally, one of the first positioning structure and the second positioning structure is an arc-shaped groove, and the other is an arc-shaped protrusion, and the maximum height of the arc-shaped protrusion is greater than the maximum depth of the arc-shaped groove.

[0027] Optionally, the second positioning structure is two arc-shaped protrusions, and the maximum distance between the outer sides of the two arc-shaped protrusions is not greater than the diameter of the ball head.

[0028] Optionally, the second positioning structure is two arc-shaped protrusions, and the first positioning structure is an arc-shaped groove. Along the width direction of the ball head, the sum of the length of each arc-shaped protrusion and the rotation distance of the ball head is not greater than the length of the arc-shaped groove.

[0029] Optionally, the ball head connecting rod further comprises:

[0030] A rod body, wherein the first end of the rod body is connected to the ball head, and the second positioning structure is arranged close to the rod body.

[0031] A third aspect of the utility model provides a ball stud device, comprising: a ball stud base as described in any one of the above technical solutions and a ball stud connecting rod as described in any one of the above technical solutions.

[0032] Optionally, the ball stud device further comprises:

[0033] A ball head limiting seat, which is connected to the ball head base and is used to limit the ball head of the ball head connecting rod, and the rod body of the ball head connecting rod can pass through the ball head limiting seat; the ball head limiting seat is a flexible structure.

[0034] Optionally, the ball stud device further comprises:

[0035] A dust cover is connected to the ball head base, and the rod body of the ball head connecting rod can pass through the dust cover.

[0036] A fourth aspect of the utility model provides an upper swing arm assembly, comprising: a ball stud device as described in any one of the above technical solutions.

[0037] Optionally, the upper swing arm assembly further includes:

[0038] The swing arm body, the ball pin device is hinged to the swing arm body, and the relative rotation angle between the ball pin device and the swing arm body is greater than degrees.

[0039] Optionally, the swing arm body comprises a first connecting arm and a second connecting arm, and the first connecting arm and the second connecting arm are connected in a V shape;

[0040] A third connecting hole is provided at a position where the first connecting arm and the second connecting arm are connected, and the ball base of the ball pin device is connected to the third connecting hole.

[0041] Optionally, the upper swing arm assembly further includes:

[0042] A first connecting rod, wherein both ends of the first connecting rod are respectively hinged to the first connecting arm and the second connecting arm, and the first connecting rod is provided with a connecting portion, and the connecting portion is used for external fixed connection.

[0043] Optionally, the swing arm body further includes:

[0044] A first connecting hole, wherein the first connecting hole is arranged at an end of the first connecting arm, and a first end of the first connecting rod is hinged to the first connecting hole;

[0045] A second connecting hole is provided at an end of the second connecting arm, and the second end of the first connecting rod is hinged to the second connecting hole.

[0046] Optionally, the first connecting rod comprises:

[0047] A connecting rod body, wherein the connecting rod body is disposed between the first connecting arm and the second connecting arm;

[0048] a first connecting column, wherein a first end of the first connecting column is fixedly connected to a first end of the connecting rod body;

[0049] a first ball head, the first ball head being fixedly connected to the second end of the first connecting column, and the first ball head extending into the first connecting hole;

[0050] a second connecting column, a first end of the second connecting column being fixedly connected to the second end of the connecting rod body;

[0051] A second ball head, wherein the second ball head is fixedly connected to the second end of the second connecting column, and the second ball head extends into the second connecting hole.

[0052] Optionally, the upper swing arm assembly further includes:

[0053] a first spherical base, wherein the first spherical base is disposed in the first connecting hole, the first ball head is connected to the first spherical base, and the first ball head can rotate relative to the first spherical base;

[0054] a first limiting bolt, the first limiting bolt being connected to the first connecting hole, the first limiting bolt being arranged on the outer side of the first connecting arm and being used for limiting the first spherical base, and a gap being arranged between the first limiting bolt and the first ball head;

[0055] A first limiting snap ring, which is disposed in the first connecting hole and located on the inner side of the first connecting arm, and is used to limit the position of the first spherical base;

[0056] A first dust cover is provided on the first connecting column for preventing dust.

[0057] Optionally, the upper swing arm assembly further includes:

[0058] a second spherical base, wherein the second spherical base is disposed in the second connecting hole, the second ball head is connected to the second spherical base, and the second ball head can rotate relative to the second spherical base;

[0059] a second limiting bolt, the second limiting bolt being connected to the second connecting hole, the second limiting bolt being arranged on the outer side of the second connecting arm and being used for limiting the second spherical base, and a gap being arranged between the second limiting bolt and the second ball head;

[0060] A second limiting snap ring, which is disposed in the second connecting hole and located on the inner side of the second connecting arm, and is used to limit the position of the second spherical base;

[0061] A second dust cover is provided on the second connecting column for preventing dust.

[0062] Optionally, the first spherical base and the second spherical base are made of wear-resistant composite materials.

[0063] Optionally, the connecting portion includes: a fourth connecting hole and a fifth connecting hole, wherein the fourth connecting hole and the fifth connecting hole are arranged on the connecting rod body and are used to externally connect to a shock absorber assembly or a sub-frame assembly;

[0064] The connecting rod body is a rectangular column, the first connecting column and the second connecting column are cylindrical, and the width of the connecting rod body is greater than the diameter of the first connecting column and the second connecting column.

[0065] A fifth aspect of the utility model provides a suspension mechanism, comprising an upper swing arm assembly according to any one of the above technical solutions.

[0066] A sixth aspect of the utility model provides a vehicle, comprising a suspension mechanism according to any one of the above technical solutions.

[0067] According to the ball head base, ball head connecting rod, ball head pin device, upper swing arm assembly, suspension mechanism and vehicle of the utility model, by arranging a limiting mechanism that can slide and cooperate on the ball head base and the ball head connecting rod, the ball head connecting rod can be safely rotated at a large swing angle relative to the ball head base, and the ball head base and the ball head connecting rod are ensured not to be separated during the rotation process, thereby providing conditions for shortening the length of the swing arm and adapting to a smaller installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] The following drawings of the embodiments of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0069] Figure 1 It is a three-dimensional diagram of an upper swing arm assembly according to a preferred embodiment of the utility model;

[0070] Figure 2 It is an exploded view of an upper swing arm assembly according to a preferred embodiment of the utility model;

[0071] Figure 3 It is an exploded view of a ball stud device according to a preferred embodiment of the utility model;

[0072] Figure 4 for Figure 3 Sectional view along AA;

[0073] Figure 5 It is an exploded view of a ball stud device according to a preferred embodiment of the utility model;

[0074] Figure 6 It is an exploded view of a ball stud device according to a preferred embodiment of the utility model;

[0075] Figure 7 It is a three-dimensional diagram of a suspension mechanism according to a preferred embodiment of the utility model;

[0076] Figure 8 It is a cross-sectional view of an upper swing arm assembly according to a preferred embodiment of the utility model;

[0077] Fig. 9 It is a three-dimensional diagram of an upper swing arm assembly according to a preferred embodiment of the utility model;

[0078] Fig.10 It is a stereoscopic view of a first connecting rod according to a preferred embodiment of the utility model.

[0079] Description of reference numerals:

[0080] 100: Subframe assembly 200: Lower arm assembly

[0081] 300: shock absorber assembly 400: upper swing arm assembly

[0082] 1: First limit bolt 2: First spherical base

[0083] 3: First connecting rod 4: First dust cover

[0084] 5: First limit ring 6: Ball head connecting rod

[0085] 7: Dust cover 8: Ball head limit seat

[0086] 9: Ball head base 10: Swing arm body

[0087] 11: First connecting arm 12: First connecting hole

[0088] 13: Third connecting hole 14: Second connecting arm

[0089] 15: Second connecting hole 31: Connecting rod body

[0090] 32: Fourth connecting hole 33: First connecting column

[0091] 34: First ball head 35: Fifth connecting hole

[0092] 36: Second connecting column 37: Second ball head

[0093] 41: First limiting bolt 42: First spherical base

[0094] 44: First dust cover 45: First limit clamp ring

[0095] 61: Rod body 62: Ball head

[0096] 63: Second positioning structure 64: Connection hole

[0097] 65: slotted nut 91: seat

[0098] 92: Spherical groove 93: First positioning structure

[0099] 94: First card slot 95: Notch

[0100] 96: Spring collar 97: Second slot

[0101] 98: Limit flange DETAILED DESCRIPTION

[0102] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0103] In order to thoroughly understand the utility model, a detailed description will be provided in the following description. It should be understood that these embodiments are provided to make the disclosure of the utility model thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. Obviously, the implementation of the embodiments of the utility model is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the utility model are described in detail below, but in addition to these detailed descriptions, the utility model may also have other embodiments.

[0104] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of the "second component", and the term "second component" itself does not imply the existence of the "first component".

[0105] It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and similar expressions used in the present invention are for illustrative purposes only and are not restrictive.

[0106] The utility model discloses a ball head base, a ball head connecting rod, a ball head pin device, an upper swing arm assembly, a suspension mechanism and a vehicle.

[0107] Now, exemplary embodiments according to the present invention will be described in more detail with reference to the accompanying drawings.

[0108] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, in a preferred embodiment, a ball head base 9 includes:

[0109] The seat body 91 is provided with a spherical groove 92, and the spherical groove 92 is used for rotationally connecting with the ball head connecting rod 6;

[0110] The seat body 91 is made of metal, and the surface of the spherical groove 92 can be provided with a soft lining, such as a lining made of wear-resistant composite material. The ball head connecting rod 6 is in contact with the soft lining, which can reduce the wear during the rotation process and absorb and filter the fine vibration transmitted during the driving process of the vehicle;

[0111] Among them, a first positioning structure 93 is arranged on the surface of the spherical groove 92 , and the first positioning structure 93 is arranged along the rotation direction of the ball head connecting rod 6 . The first positioning structure 93 is arranged on the soft lining, or is arranged on the hard surface and the soft lining of the spherical groove 92 at the same time.

[0112] The ball head base in this embodiment is provided with a first positioning structure on the ball head base so that the ball head connecting rod can be safely rotated relative to the ball head base at a large swing angle. During the rotation, the ball head base and the ball head connecting rod are ensured not to be separated, thereby providing conditions for shortening the length of the swing arm and adapting to a smaller installation space.

[0113] In one embodiment, the first positioning structure 93 is an arc-shaped groove or an arc-shaped protrusion.

[0114] like Figure 4 As shown, the first positioning structure 93 is an arc groove, specifically a continuous semicircular groove. Only one arc groove is provided in the figure, and the surface of the spherical groove 92 can also be provided with multiple arc grooves as needed, for example, two vertically intersecting arc grooves are provided.

[0115] The first positioning structure 93 may also be an arc-shaped protrusion, specifically a continuous semicircular protrusion. The surface of the spherical groove 92 may be provided with only one arc-shaped protrusion, or the surface of the spherical groove 92 may be provided with multiple arc-shaped protrusions as required, for example, two vertically intersecting arc-shaped protrusions.

[0116] In one embodiment, if the first positioning structure 93 is an arc-shaped groove, along the extending direction of the arc-shaped groove, the depths at both ends of the arc-shaped groove are greater than the depth in the middle of the arc-shaped groove.

[0117] Because the two ends of the arc groove are close to the edge of the spherical groove 92, and the middle of the arc groove is close to the middle of the spherical groove 92, the edge of the spherical groove 92 and the ball head connecting rod 6 are in low-frequency contact positions, and the middle of the spherical groove 92 is a high-frequency contact position between the spherical groove 92 and the ball head connecting rod 6. The depth of the arc groove in the middle of the spherical groove 92 is appropriately reduced, which is beneficial to reducing the friction between the spherical groove 92 and the ball head connecting rod 6, and avoiding excessive resistance affecting the relative rotation of the ball head base 9 and the ball head connecting rod 6.

[0118] If the first positioning structure 93 is an arc-shaped protrusion, along the extending direction of the arc-shaped protrusion, the height of the arc-shaped protrusion close to the edge of the spherical groove 92 is greater than the height of the arc-shaped protrusion close to the middle of the spherical groove 92 .

[0119] Because the two ends of the arc-shaped protrusion are close to the edge of the spherical groove 92, and the middle part of the arc-shaped protrusion is close to the middle part of the spherical groove 92, the edge of the spherical groove 92 and the ball head connecting rod 6 are in low-frequency contact positions, and the middle part of the spherical groove 92 is a high-frequency contact position between the spherical groove 92 and the ball head connecting rod 6. The height of the arc-shaped protrusion in the middle part of the spherical groove 92 is appropriately reduced, which is beneficial to reducing the friction between the spherical groove 92 and the ball head connecting rod 6, and avoiding excessive resistance affecting the relative rotation of the ball head base 9 and the ball head connecting rod 6.

[0120] In one embodiment, if the first positioning structure 93 is an arc-shaped groove, the depth of the arc-shaped groove gradually decreases from both ends to the middle. Through such a setting, the relative rotation of the ball head base 9 and the ball head connecting rod 6 is smoother, avoiding sudden changes in depth and causing vehicle vibration and noise.

[0121] If the first positioning structure 93 is an arc-shaped protrusion, the height of the arc-shaped protrusion gradually decreases from the edge of the spherical groove 92 to the middle of the spherical groove 92. Through this arrangement, the relative rotation of the ball head base 9 and the ball head connecting rod 6 is smoother, avoiding sudden changes in depth and causing vehicle vibration and noise.

[0122] In one embodiment, if Figure 4 As shown, the first positioning structure 93 is an arc groove, and the two ends of the arc groove are symmetrically arranged at the edge of the spherical groove 92 relative to the axis of the seat body 91. This arrangement is conducive to the second positioning structure 63 being able to smoothly enter and exit the first positioning structure 93 when the first positioning structure 93 and the second positioning structure 63 (arc protrusion) are slidably matched, ensuring that the ball head connecting rod 6 maintains a reliable connection when it rotates left and right relative to the ball head base 9.

[0123] In one embodiment, the first positioning structure 93 is two arc-shaped protrusions, and the two arc-shaped protrusions are symmetrically arranged at the edge of the spherical groove 92 relative to the axis of the seat body 91. Such an arrangement is conducive to the first positioning structure 93 being able to smoothly enter and exit the second positioning structure 63 when the first positioning structure 93 and the second positioning structure 63 (arc-shaped groove) are slidably matched, ensuring that the ball head connecting rod 6 maintains a reliable connection when it rotates left and right relative to the ball head base 9.

[0124] In one embodiment, if Figure 4 , Figure 5 As shown, the ball head base 9 also includes:

[0125] The first slot 94 is arranged near the notch 95 of the spherical slot 92, and is used to connect the ball stop seat 8. The side of the ball stop seat 8 is provided with a flange, which can be engaged with the first slot 94, so as to realize the connection between the ball stop seat 8 and the ball base 9.

[0126] In one embodiment, if Figure 4As shown, the first slot 94 is circular and coaxially arranged with the seat body 91. A circular flange is arranged on the side of the ball stop seat 8, and the ball stop seat 8 can be made of soft material, for example, made of wear-resistant composite material, and the circular flange can be inserted into the first slot 94 by extrusion deformation to achieve clamping.

[0127] In one embodiment, if Figure 3 , Figure 4 , Figure 5 As shown, a limiting portion is provided on the side of the seat body 91, and the limiting portion is used to connect the swing arm body 10. The limiting portion includes a spring clamp 96, a second clamping groove 97 and a limiting flange 98. The second clamping groove 97 and the limiting flange 98 are provided on the side of the seat body 91 along the axial direction of the seat body 91 and are spaced apart by a predetermined distance. The spring clamp 96 is detachably provided in the second clamping groove 97.

[0128] like Figure 2 As shown, the swing arm body 10 is provided with a third connection hole 13, and the seat body 91 can be combined and connected with the third connection hole 13. Before connection, the spring collar 96 is removed from the second clamping groove 97, and the seat body 91 can be extended into the third connection hole 13. The diameter of the limiting flange 98 is larger than the inner diameter of the third connection hole 13. When the limiting flange 98 blocks the movement of the seat body 91, the seat body 91 is installed in place in the third connection hole 13. At this time, the spring collar 96 can be installed, and the seat body 91 can be combined and connected with the third connection hole 13. If the seat body 91 needs to be disassembled, the spring collar 96 is first removed, and the seat body 91 can be withdrawn from the third connection hole 13.

[0129] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the embodiment of the utility model further provides a ball head connecting rod 6, comprising:

[0130] The ball head 62 is used to connect the ball head base 9; the ball head 62 is a sphere, or at least the position that rotates with the spherical groove 92 of the ball head base 9 is a sphere, the ball head connecting rod 6 is made of metal, and the ball head 62 is also made of metal;

[0131] A second positioning structure 63 is disposed on the surface of the ball head 62 . The second positioning structure 63 is used to be connected to the first positioning structure 93 of the ball head base 9 . The second positioning structure 63 can slide relative to the first positioning structure 93 .

[0132] The ball head connecting rod in this embodiment is equipped with a second positioning structure on the ball head, so that the ball head connecting rod can be safely rotated at a large swing angle relative to the ball head base. During the rotation, the ball head base and the ball head connecting rod are ensured not to be separated, thereby providing conditions for shortening the length of the swing arm and adapting to a smaller installation space.

[0133] In one embodiment, the second positioning structure 63 is an arc-shaped protrusion or an arc-shaped groove.

[0134] like Figure 4 As shown, the second positioning structure 63 is an arc-shaped protrusion, specifically two arc-shaped protrusions set separately. Only two arc-shaped protrusions are set in the figure, and four arc-shaped protrusions can also be set on the surface of the ball head 62 as needed, corresponding to two vertically intersecting first positioning structures 93 (arc-shaped grooves).

[0135] The second positioning structure 63 may also be a continuous semicircular protrusion. The surface of the ball head 62 may be provided with only one arc-shaped protrusion, or the surface of the ball head 62 may be provided with multiple arc-shaped protrusions as required, for example, two vertically intersecting arc-shaped protrusions.

[0136] The second positioning structure 63 can also be an arc groove, specifically a continuous semicircular groove. The surface of the ball head 62 can be provided with only one arc groove, or the surface of the ball head 62 can be provided with multiple arc grooves as required, for example, two vertically intersecting arc grooves.

[0137] In one embodiment, if the second positioning structure 63 is an arc-shaped protrusion, along the extension direction of the arc-shaped protrusion, the height of the arc-shaped protrusion close to the root of the ball head 62 is greater than the height of the arc-shaped protrusion close to the top of the ball head 62.

[0138] The root of the ball head 62 is where the ball head 62 is connected to the rod body 61, and the top of the ball head 62 is where the ball head 62 is away from the rod body 61. Because the two ends of the continuous arc-shaped protrusion are close to the root of the ball head 62, the middle of the arc-shaped protrusion is close to the top of the ball head 62, and the arc-shaped protrusions arranged separately have at least one end close to the root of the ball head 62 and one end close to the top of the ball head 62, the root of the ball head 62 and the spherical groove 92 are low-frequency contacts, and the top of the ball head 62 is a high-frequency contact position between the ball head 62 and the spherical groove 92. The height of the arc-shaped protrusion at the top of the ball head 62 is appropriately reduced, which is conducive to reducing the friction between the ball head 62 and the spherical groove 92, and avoiding excessive resistance affecting the relative rotation of the ball head connecting rod 6 and the ball head base 9.

[0139] If the second positioning structure 63 is an arc-shaped groove, along the extending direction of the arc-shaped groove, the depths at both ends of the arc-shaped groove are greater than the depth in the middle of the arc-shaped groove.

[0140] The root of the ball head 62 is where the ball head 62 is connected to the rod body 61, and the top of the ball head 62 is where the ball head 62 is away from the rod body 61. Because the two ends of the arc groove are close to the root of the ball head 62, and the middle of the arc groove is close to the top of the ball head 62, the root of the ball head 62 and the spherical groove 92 are low-frequency contacts, and the top of the ball head 62 is a high-frequency contact position between the ball head 62 and the spherical groove 92. The depth of the arc groove at the top of the ball head 62 is appropriately reduced, which is conducive to reducing the friction between the ball head 62 and the spherical groove 92, and avoiding excessive resistance affecting the relative rotation of the ball head connecting rod 6 and the ball head base 9.

[0141] In one embodiment, if the second positioning structure 63 is an arc-shaped protrusion, the height of the arc-shaped protrusion gradually decreases from the root of the ball head 62 to the top of the ball head 62. Through such a setting, the relative rotation of the ball head base 9 and the ball head connecting rod 6 is smoother, avoiding sudden changes in depth and causing vehicle vibration and noise.

[0142] If the second positioning structure 63 is an arc-shaped groove, the depth of the arc-shaped groove gradually decreases from both ends to the middle. This arrangement makes the relative rotation of the ball head base 9 and the ball head connecting rod 6 smoother, avoiding sudden changes in depth that cause vehicle vibration and noise.

[0143] In one embodiment, if Figure 3 , Figure 4 As shown, the second positioning structure 63 is two arc-shaped protrusions, and the two arc-shaped protrusions are symmetrically arranged at the root of the ball head 62 relative to the axis of the ball head 62. This arrangement is conducive to the second positioning structure 63 being able to smoothly enter and exit the first positioning structure 93 when the second positioning structure 63 slides with the first positioning structure 93 (arc-shaped groove), ensuring that the ball head connecting rod 6 maintains a reliable connection when it rotates left and right relative to the ball head base 9.

[0144] In one embodiment, the second positioning structure 63 is an arc-shaped groove, and the two ends of the arc-shaped groove are symmetrically arranged at the root of the ball head 62 relative to the axis of the seat body 91. This arrangement is conducive to the first positioning structure 93 being able to smoothly enter and exit the second positioning structure 63 when the second positioning structure 63 slides with the first positioning structure 93 (arc-shaped protrusion), ensuring that the ball head connecting rod 6 remains reliably connected when it rotates left and right relative to the ball head base 9.

[0145] In one embodiment, one of the first positioning structure 93 and the second positioning structure 63 is an arc-shaped groove, and the other is an arc-shaped protrusion, and the maximum height of the arc-shaped protrusion is greater than the maximum depth of the arc-shaped groove. This arrangement can ensure that the arc-shaped protrusion and the arc-shaped groove can be reliably connected, and avoid the arc-shaped protrusion from being separated from the arc-shaped groove during the sliding process due to the small height of the arc-shaped protrusion.

[0146] In one embodiment, if Figure 4As shown, the second positioning structure 63 is two arc-shaped protrusions, and the maximum distance between the outer sides of the two arc-shaped protrusions is not greater than the diameter of the ball head 62. This arrangement allows the ball head 62 to smoothly enter the spherical groove 92 without affecting the sliding fit between the second positioning structure 63 and the first positioning structure 93.

[0147] In one embodiment, if Figure 4 As shown, the second positioning structure 63 is two arc-shaped protrusions, and the first positioning structure 93 is an arc-shaped groove. Along the width direction of the ball head 62, the sum of the length of each arc-shaped protrusion and the rotation distance of the ball head 62 is not greater than the length of the arc-shaped groove. This arrangement ensures that when the ball head 62 is aligned with the spherical groove 92, the arc-shaped protrusion can enter the arc-shaped groove, and when the ball head connecting rod 6 rotates left and right relative to the ball head base 9, a sliding fit is smoothly achieved.

[0148] In one embodiment, if Figure 3 , Figure 4 As shown, the ball head connecting rod also includes:

[0149] The rod body 61 has a first end connected to the ball head 62 , and the second positioning structure 63 is disposed close to the rod body 61 .

[0150] The rod body 61 and the ball head 62 can be manufactured in one piece, and the diameter of the rod body 61 is smaller than the diameter of the ball head 62 .

[0151] like Figure 5 , Figure 6 As shown, the second end of the rod body 61 is provided with a connecting hole 64 and a slotted nut 65, and the second end of the rod body 61 is connected to the steering knuckle arm through the connecting hole 64 and the slotted nut 65, and the steering knuckle arm is downwardly connected to the lower swing arm assembly. The steering knuckle arm is not shown in the figure, and reference can be made to the prior art.

[0152] like Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, an embodiment of the utility model further provides a ball stud device, comprising: a ball stud base 9 described in any one of the above embodiments and a ball stud connecting rod 6 described in any one of the above embodiments.

[0153] The ball pin device in this embodiment provides a slidably mating limit mechanism on the ball head base and the ball head connecting rod, so that the ball head connecting rod can be safely rotated at a large swing angle relative to the ball head base. During the rotation, the ball head base and the ball head connecting rod are not separated, which provides conditions for shortening the length of the swing arm and adapting to a smaller installation space.

[0154] In one embodiment, if Figure 2 , Figure 5 As shown, the ball stud device also includes:

[0155] The ball head limit seat 8 is connected to the ball head base 9 and is used to limit the ball head 62 of the ball head connecting rod 6. The rod body 61 of the ball head connecting rod 6 can pass through the ball head limit seat 8. The ball head limit seat 8 is a flexible structure. The ball head connecting rod 6 contacts the ball head limit seat 8, which can reduce wear during rotation.

[0156] The inner diameter of the ball head limiting seat 8 is smaller than the diameter of the ball head 62 . After the ball head limiting seat 8 is engaged with the ball head base 9 , the ball head 62 can be prevented from being separated from the spherical groove 92 .

[0157] In one embodiment, if Figure 2 , Figure 5 As shown, the ball stud device also includes:

[0158] The dust cover 7 is connected to the ball head base 9, and the rod body 61 of the ball head connecting rod 6 can pass through the dust cover 7. The dust cover 7 is provided on the ball head connecting rod 6 for dust prevention. If foreign matter enters the ball head base 9, the rotation of the ball head 62 of the ball head connecting rod 6 will be affected, so it is necessary to provide the dust cover 7 for dust prevention.

[0159] like Figure 1 , Figure 2 , Figure 7 As shown, an embodiment of the utility model further provides an upper swing arm assembly 400, comprising: a ball stud device as described in any one of the above embodiments.

[0160] The upper swing arm assembly in this embodiment is equipped with a slidably fitting limit mechanism on the ball head base and the ball head connecting rod, so that the ball head connecting rod can be safely rotated at a large swing angle relative to the ball head base. During the rotation, the ball head base and the ball head connecting rod are ensured not to be separated, thereby providing conditions for shortening the length of the swing arm and adapting to a smaller installation space.

[0161] In one embodiment, if Figure 7 , Figure 8 As shown, the upper swing arm assembly 400 also includes:

[0162] The swing arm body 10, the ball pin device is hinged to the swing arm body 10, and the relative rotation angle between the ball pin device and the swing arm body 10 is greater than 35 degrees.

[0163] The swing arm body 10 is more than 50 mm shorter than similar products in the prior art, and the relative rotation angle between the ball stud device and the swing arm body 10 is also larger. With this arrangement, the upper swing arm assembly 400 can better adapt to the smaller installation space in the frame, and reserve a larger middle space for the subframe assembly 100, meeting the design requirements.

[0164] In one embodiment, if Figure 8 , Fig. 9As shown, the swing arm body 10 includes a first connecting arm 11 and a second connecting arm 14, the first connecting arm 11 and the second connecting arm 14 are connected in a V shape, and the angle between the first connecting arm 11 and the second connecting arm 14 is designed according to actual needs, and can be an acute angle or an obtuse angle;

[0165] A third connecting hole 13 is provided at a position where the first connecting arm 11 and the second connecting arm 14 are connected, and the ball base 9 of the ball pin device is connected to the third connecting hole 13 .

[0166] like Figure 1 , Figure 2 As shown, the seat body 91 of the ball head base 9 can be combined and connected with the third connection hole 13. Before connection, the spring collar 96 is removed from the second clamping groove 97, and the seat body 91 can be extended into the third connection hole 13. The diameter of the limiting flange 98 is larger than the inner diameter of the third connection hole 13. When the limiting flange 98 blocks the movement of the seat body 91, the seat body 91 is installed in place in the third connection hole 13. At this time, the spring collar 96 can be installed, and the seat body 91 can be combined and connected with the third connection hole 13. If the seat body 91 needs to be disassembled, the spring collar 96 is first removed, and the seat body 91 can be withdrawn from the third connection hole 13.

[0167] In one embodiment, the upper swing arm assembly 400 further includes:

[0168] The first connecting rod 3 has two ends hinged to the first connecting arm 11 and the second connecting arm 14 respectively. The first connecting rod 3 is provided with a connecting portion, and the connecting portion is used for external fixed connection.

[0169] By providing a first connecting rod 3 for external connection in the upper swing arm assembly 400, the first connecting rod 3 and the swing arm body 10 can be pre-assembled, and then the shock absorber assembly 300 or the subframe assembly 100 is fixedly connected to the outside through the first connecting rod 3, which facilitates the assembly of the upper swing arm assembly 400 with other components, reduces the difficulty of assembly, ensures the coaxiality of the connection position, and is not easily damaged during use, thereby extending the service life of the suspension mechanism.

[0170] In one embodiment, if Figure 2 As shown, the swing arm body 10 also includes:

[0171] A first connecting hole 12, which is provided at an end of the first connecting arm 11, and a first end of the first connecting rod 3 is hinged to the first connecting hole 12;

[0172] The second connecting hole 15 is arranged at the end of the second connecting arm 14 , and the second end of the first connecting rod 3 is hinged to the second connecting hole 15 .

[0173] The first connecting rod 3 is in the shape of a straight rod as a whole, and the first connecting hole 12 and the second connecting hole 15 are coaxially arranged so that they can be hinged to both ends of the first connecting rod 3 at the same time.

[0174] The axial direction of the third connecting hole 13 is perpendicular to the axial directions of the first connecting hole 12 and the second connecting hole 15 .

[0175] The swing arm body 10 can be formed by casting, and then the first connecting hole 12 and the second connecting hole 15 are machined at the two ends respectively, and the third connecting hole 13 is machined at the position where the first connecting arm 11 and the second connecting arm 14 are connected.

[0176] In one embodiment, if Fig.10 As shown, the first connecting rod 3 includes:

[0177] A connecting rod body 31, wherein the connecting rod body 31 is disposed between the first connecting arm 11 and the second connecting arm 14;

[0178] A first connecting column 33, a first end of the first connecting column 33 is fixedly connected to a first end of the connecting rod body 31;

[0179] A first ball head 34, the first ball head 34 is fixedly connected to the second end of the first connecting column 33, and the first ball head 34 extends into the first connecting hole 12;

[0180] A second connecting column 36, a first end of the second connecting column 36 is fixedly connected to the second end of the connecting rod body 31;

[0181] The second ball head 37 is fixedly connected to the second end of the second connecting column 36 , and the second ball head 37 extends into the second connecting hole 15 .

[0182] The connecting rod body 31, the first connecting column 33, the first ball head 34, the second connecting column 36 and the second ball head 37 can be manufactured as a whole to ensure structural strength. For example, the first connecting rod 3 can be made of a rectangular steel, and the first connecting column 33, the first ball head 34, the second connecting column 36 and the second ball head 37 are machined at both ends.

[0183] In one embodiment, the upper swing arm assembly 400 further includes:

[0184] A first spherical base 2, wherein the first spherical base 2 is disposed in the first connecting hole 12, and a first ball head 34 is connected to the first spherical base 2, and the first ball head 34 can rotate relative to the first spherical base 2;

[0185] A first limiting bolt 1, which is connected to the first connecting hole 12, is disposed on the outside of the first connecting arm 11, and is used to limit the first spherical base 2, and a gap is provided between the first limiting bolt 1 and the first ball head 34;

[0186] A first limiting snap ring 5, which is disposed in the first connecting hole 12 and located on the inner side of the first connecting arm 11, and is used to limit the position of the first spherical base 2;

[0187] The first dust cover 4 is disposed on the first connecting column 33 for dust prevention.

[0188] The first spherical base 2 is provided with a spherical groove inside to cooperate with the first ball head 34. The first limiting bolt 1 is similar to a plug, which is threadedly connected to the first connecting hole 12, and can limit the first spherical base 2 from the outside of the first connecting arm 11. The first limiting bolt 1 and the first ball head 34 are clearance-matched, which can absorb and filter the fine vibrations transmitted during the driving process of the vehicle. The first limiting clamp 5 can prevent the first spherical base 2 from detaching from the first spherical base 2. If any debris enters the first spherical base 2, it will affect the rotation of the first ball head 34, so it is necessary to set a first dust cover 4 for dust prevention.

[0189] In one embodiment, the upper swing arm assembly 400 further includes:

[0190] A second spherical base 42, the second spherical base 42 is disposed in the second connecting hole 15, the second ball head 37 is connected to the second spherical base 42, and the second ball head 37 can rotate relative to the second spherical base 42;

[0191] A second limiting bolt 41, which is connected to the second connecting hole 15, is disposed on the outer side of the second connecting arm 14, and is used to limit the second spherical base 42, and a gap is provided between the second limiting bolt 41 and the second ball head 37;

[0192] A second limiting snap ring 45, which is disposed in the second connecting hole 15 and located on the inner side of the second connecting arm 14, and is used to limit the position of the second spherical base 42;

[0193] The second dust cover 44 is disposed on the second connecting column 36 for dust prevention.

[0194] The second spherical base 42 is provided with a spherical groove inside to cooperate with the second ball head 37. The second limiting bolt 41 is similar to a plug, which is threadedly connected to the second connecting hole 15, and can limit the second spherical base 42 from the outside of the second connecting arm 14. The second limiting bolt 41 and the second ball head 37 are clearance-matched to absorb and filter the fine vibrations transmitted during the driving process of the vehicle. The second limiting snap ring 45 can prevent the second spherical base 42 from detaching from the second spherical base 42. If there is debris entering the second spherical base 42, it will affect the rotation of the second ball head 37, so it is necessary to set a second dust cover 44 for dust prevention.

[0195] In one embodiment, the first spherical base 2 and the second spherical base 42 are made of wear-resistant composite materials, which can absorb and filter the fine vibrations transmitted during the driving of the vehicle in cooperation with the first connecting rod 3, and can also significantly extend the service life of the upper swing arm assembly 400.

[0196] In one embodiment, lubricating oil or grease is disposed inside the first spherical base 2 and the second spherical base 42 , which can improve the rotation flexibility of the upper swing arm assembly 400 relative to the shock absorber assembly 300 or the subframe assembly 100 .

[0197] In one embodiment, the connection portion includes: a fourth connection hole 32 and a fifth connection hole 35 , which are disposed on the connecting rod body 31 for externally connecting to the shock absorber assembly or the sub-frame assembly 100 .

[0198] like Figure 7 , Fig.10 As shown, bolts are inserted into the fourth connecting hole 32 and the fifth connecting hole 35, and the shock absorber assembly 300 or the subframe assembly 100 is connected by the bolts.

[0199] The connecting rod body 31 is a rectangular column, the first connecting column 33 and the second connecting column 36 are cylindrical, and the width of the connecting rod body 31 is greater than the diameter of the first connecting column 33 and the second connecting column 36. Through this arrangement, on the one hand, it is convenient to process the fourth connecting hole 32 and the fifth connecting hole 35 on the connecting rod body 31, and on the other hand, it can limit the first dust cover 4 and the second dust cover 44 to prevent the first dust cover 4 and the second dust cover 44 from being separated from the dustproof position.

[0200] like Figure 1 , Figure 2 , Figure 7 As shown, an embodiment of the utility model further provides a suspension mechanism, comprising an upper swing arm assembly 400 according to any one of the above embodiments.

[0201] like Figure 7 As shown, in one embodiment, the suspension mechanism includes a subframe assembly 100, and a lower swing arm assembly 200, a shock absorber assembly 300 and an upper swing arm assembly 400 are respectively provided at two ends of the subframe assembly 100.

[0202] The lower swing arm assembly 200 is hinged to the subframe assembly 100 , the lower end of the shock absorber assembly 300 is hinged to the lower swing arm assembly 200 , and the upper end of the shock absorber assembly 300 is fixedly connected to the first connecting rod 3 of the upper swing arm assembly 400 .

[0203] The lower arm assembly 200 is also connected to the wheel end. When the wheel bumps up and down, the lower arm assembly 200 is driven to rotate up and down relative to the subframe assembly 100, and the shock absorber assembly 300 can absorb the vibration of the wheel end.

[0204] When the wheel moves under force, the upper swing arm assembly 400 and the lower swing arm assembly 200 perform torsional motion. When the upper swing arm assembly 400 generates torsion, the torsion of the swing arm body 10 will drive the two limit bolts and the two spherical bases to twist together. The spherical base and the first connecting rod 3 are spherical pairs. The first connecting rod 3 does not move because it is rigidly connected to the subframe assembly 100 by bolts. The first connecting rod 3 and the spherical base generate friction motion. The inside of the spherical base is coated with high-efficiency and durable lubricating oil or grease, and the material of the spherical base is a wear-resistant composite material. There is no rigid connection or vulcanized connection between them, so it can achieve 360-degree rotation along the axis.

[0205] An embodiment of the utility model further provides a vehicle, comprising a suspension mechanism according to any one of the above embodiments.

[0206] In one embodiment, the suspension mechanism is a front suspension or a rear suspension of the vehicle.

[0207] The ball head base, ball head connecting rod, ball head pin device, upper swing arm assembly, suspension mechanism and vehicle of the utility model have the following characteristics:

[0208] By arranging a limiting mechanism that can slide and cooperate on the ball head base and the ball head connecting rod, the ball head connecting rod can be safely rotated at a large swing angle relative to the ball head base. During the rotation process, the ball head base and the ball head connecting rod will not be separated, which provides conditions for shortening the length of the swing arm and adapting to a smaller installation space.

[0209] By providing a first connecting rod for external connection in the upper swing arm, the first connecting rod and the swing arm body can be pre-assembled, and then the shock absorber assembly or the subframe assembly is fixedly connected to the outside through the first connecting rod, which facilitates the assembly of the upper swing arm assembly with other components, reduces the difficulty of assembly, ensures the coaxiality of the connection position, and is not easily damaged during use, thereby extending the service life of the suspension mechanism.

[0210] The processes and steps described in all the above preferred embodiments are only examples. Unless adverse effects occur, various processing operations can be performed in a sequence different from the sequence of the above processes. The sequence of steps in the above processes can also be increased, merged or deleted according to actual needs.

[0211] In understanding the scope of the present invention, the term "comprising" and its derivatives as used herein are intended to be open terms, which specify the existence of the recorded features, elements, components, groups, wholes and / or steps, but do not exclude the existence of other unrecorded features, elements, components, groups, wholes and / or steps. This concept also applies to words with similar meanings, such as the terms "including", "having" and their derivatives.

[0212] The terms "attached" or "attached" as used herein include: a configuration where an element is directly secured to another element by directly securing the element to the other element; a configuration where an element is indirectly secured to another element by securing the element to an intermediate member which in turn is secured to the other element; and a configuration where one element is integral with the other element, i.e., one element is substantially a part of the other element. This definition also applies to words with similar meanings such as "connect," "connect," "couple," "mount," "bond," "fix," and their derivatives. Finally, terms of degree such as "substantially," "approximately," and "approximately" as used herein represent the amount of deviation that modifies the term such that the end result will not be significantly changed.

[0213] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. The features described herein in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable or otherwise specified in the other embodiment.

[0214] The utility model has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and description, and are not intended to limit the utility model to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the utility model is not limited to the above-mentioned embodiments, and more variations and modifications can be made according to the teachings of the utility model, and these variations and modifications all fall within the scope of protection claimed by the utility model.

Claims

1. A ball head base, characterized in that: include: A seat body (91), the seat body (91) being provided with a spherical groove (92), the spherical groove (92) being used for rotationally connecting with a ball head connecting rod (6); Wherein, a first positioning structure (93) is provided on the surface of the spherical groove (92), and the first positioning structure (93) is arranged along the rotation direction of the ball head connecting rod (6).

2. The ball head base according to claim 1, characterized in that: The first positioning structure (93) is an arc-shaped groove or an arc-shaped protrusion.

3. The ball head base according to claim 2, characterized in that: Along the extension direction of the arc groove, the depth at both ends of the arc groove is greater than the depth in the middle of the arc groove, or, along the extension direction of the arc protrusion, the height of the arc protrusion close to the edge of the spherical groove (92) is greater than the height of the arc protrusion close to the middle of the spherical groove (92).

4. The ball head base according to claim 3, characterized in that: The depth of the arc-shaped groove gradually decreases from both ends to the middle, or the height of the arc-shaped protrusion gradually decreases from close to the edge of the spherical groove (92) to close to the middle of the spherical groove (92).

5. The ball head base according to claim 1, characterized in that: The first positioning structure (93) is an arc-shaped groove, and two ends of the arc-shaped groove are symmetrically arranged at the edge of the spherical groove (92) relative to the axis of the seat body (91); Alternatively, the first positioning structure (93) is two arc-shaped protrusions, and the two arc-shaped protrusions are symmetrically arranged at the edge of the spherical groove (92) relative to the axis of the seat body (91).

6. The ball head base according to any one of claims 1 to 5, characterized in that: Also includes: A first clamping groove (94), the first clamping groove (94) is arranged close to the notch (95) of the spherical groove (92), and the first clamping groove (94) is used to connect to the ball head limiting seat (8).

7. The ball head base according to claim 6, characterized in that: The clamping groove (94) is circular and is coaxially arranged with the seat body (91).

8. The ball head base according to claim 1, characterized in that: A limiting portion is provided on a side surface of the seat body (91), the limiting portion being used to connect to the swing arm body (10), the limiting portion comprising a spring clamp (96), a second clamping groove (97) and a limiting flange (98), the second clamping groove (97) and the limiting flange (98) being provided on a side surface of the seat body (91) along the axial direction of the seat body (91) and spaced apart by a predetermined distance, the spring clamp (96) being detachably provided in the second clamping groove (97); And / or, the surface of the spherical groove (92) is provided with a soft lining.

9. A ball head connecting rod, characterized in that: include: A ball head (62), the ball head (62) being used to connect to a ball head base (9); A second positioning structure (63) is provided on the surface of the ball head (62), the second positioning structure (63) being used to connect with the first positioning structure (93) of the ball head base (9), and the second positioning structure (63) being able to slide relative to the first positioning structure (93).

10. The ball head connecting rod according to claim 9, characterized in that: The second positioning structure (63) is an arc-shaped protrusion or an arc-shaped groove.

11. The ball head connecting rod according to claim 10, characterized in that: Along the extension direction of the arc-shaped protrusion, the height of the arc-shaped protrusion close to the root of the ball head (62) is greater than the height of the arc-shaped protrusion close to the top of the ball head (62), or, along the extension direction of the arc-shaped groove, the depth at both ends of the arc-shaped groove is greater than the depth in the middle of the arc-shaped groove.

12. The ball head connecting rod according to claim 11, characterized in that: The height of the arc-shaped protrusion gradually decreases from the root of the ball head (62) to the top of the ball head (62), or the depth of the arc-shaped groove gradually decreases from the two ends to the middle.

13. The ball head connecting rod according to claim 12, characterized in that: The second positioning structure (63) is two arc-shaped protrusions, and the two arc-shaped protrusions are symmetrically arranged at the root of the ball head (62) relative to the axis of the ball head (62); Alternatively, the second positioning structure (63) is an arc-shaped groove, and the two ends of the arc-shaped groove are symmetrically arranged at the root of the ball head (62) relative to the axis of the seat body (91).

14. The ball head connecting rod according to claim 12, characterized in that: One of the first positioning structure (93) and the second positioning structure (63) is an arc-shaped groove, and the other is an arc-shaped protrusion, and the maximum height of the arc-shaped protrusion is greater than the maximum depth of the arc-shaped groove.

15. The ball head connecting rod according to claim 12, characterized in that: The second positioning structure (63) is two arc-shaped protrusions, and the maximum distance between the outer sides of the two arc-shaped protrusions is no greater than the diameter of the ball head (62).

16. The ball head connecting rod according to claim 10, characterized in that: The second positioning structure (63) is two arc-shaped protrusions, and the first positioning structure (93) is an arc-shaped groove. Along the width direction of the ball head (62), the sum of the length of each arc-shaped protrusion and the rotation distance of the ball head (62) is not greater than the length of the arc-shaped groove.

17. The ball head connecting rod according to claim 9, characterized in that: Also includes: A rod body (61), wherein a first end of the rod body (61) is connected to the ball head (62), and the second positioning structure (63) is arranged close to the rod body (61).

18. A ball stud device, characterized in that: include: The ball head base (9) as described in any one of claims 1 to 8 and the ball head connecting rod (6) as described in any one of claims 9 to 17.

19. The ball stud device according to claim 18, characterized in that: Also includes: A ball head limiting seat (8) is connected to the ball head base (9) and is used to limit the position of the ball head (62) of the ball head connecting rod (6); the rod body (61) of the ball head connecting rod (6) can pass through the ball head limiting seat (8); the ball head limiting seat (8) is a flexible structure.

20. The ball stud device according to claim 18, characterized in that Also includes: A dust cover (7), wherein the dust cover (7) is connected to the ball head base (9), and the rod body (61) of the ball head connecting rod (6) can pass through the dust cover (7).

21. An upper swing arm assembly, characterized in that: include: A ball stud device as claimed in any one of claims 18 to 20.

22. The upper swing arm assembly according to claim 21, characterized in that: Also includes: A swing arm body (10), wherein the ball pin device is hinged to the swing arm body (10), and a relative rotation angle between the ball pin device and the swing arm body (10) is greater than 35 degrees.

23. The upper swing arm assembly according to claim 22, characterized in that: The swing arm body (10) comprises a first connecting arm (11) and a second connecting arm (14), wherein the first connecting arm (11) and the second connecting arm (14) are connected in a V shape; A third connection hole (13) is provided at the position where the first connection arm (11) and the second connection arm (14) are connected, and the ball head base (9) of the ball head pin device is connected to the third connection hole (13).

24. The upper swing arm assembly according to claim 23, characterized in that: Also includes: A first connecting rod (3), wherein two ends of the first connecting rod (3) are respectively hinged to the first connecting arm (11) and the second connecting arm (14), and the first connecting rod (3) is provided with a connecting portion, and the connecting portion is used for external fixed connection.

25. The upper swing arm assembly according to claim 24, characterized in that: The swing arm body (10) further comprises: a first connecting hole (12), the first connecting hole (12) being arranged at an end of the first connecting arm (11), the first end of the first connecting rod (3) being hingedly connected to the first connecting hole (12); A second connecting hole (15), the second connecting hole (15) being arranged at an end portion of the second connecting arm (14), and the second end of the first connecting rod (3) being hingedly connected to the second connecting hole (15).

26. The upper swing arm assembly according to claim 25, characterized in that: The first connecting rod (3) comprises: A connecting rod body (31), wherein the connecting rod body (31) is arranged between the first connecting arm (11) and the second connecting arm (14); a first connecting column (33), wherein a first end of the first connecting column (33) is fixedly connected to a first end of the connecting rod body (31); a first ball head (34), the first ball head (34) being fixedly connected to the second end of the first connecting column (33), the first ball head (34) extending into the first connecting hole (12); a second connecting column (36), wherein a first end of the second connecting column (36) is fixedly connected to a second end of the connecting rod body (31); A second ball head (37), the second ball head (37) being fixedly connected to the second end of the second connecting column (36), and the second ball head (37) extending into the second connecting hole (15).

27. The upper swing arm assembly according to claim 26, characterized in that: Also includes: A first spherical base (2), the first spherical base (2) being arranged in the first connecting hole (12), the first ball head (34) being connected to the first spherical base (2), and the first ball head (34) being rotatable relative to the first spherical base (2); a first limiting bolt (1), the first limiting bolt (1) being connected to the first connecting hole (12), the first limiting bolt (1) being arranged on the outside of the first connecting arm (11) and being used for limiting the position of the first spherical base (2), and a gap being arranged between the first limiting bolt (1) and the first ball head (34); a first limiting snap ring (5), the first limiting snap ring (5) being arranged in the first connecting hole (12) and located on the inner side of the first connecting arm (11), and being used for limiting the position of the first spherical base (2); A first dust cover (4), the first dust cover (4) being arranged on the first connecting column (33) for preventing dust.

28. The upper swing arm assembly according to claim 27, characterized in that: Also includes: a second spherical base (42), the second spherical base (42) being arranged in the second connecting hole (15), the second ball head (37) being connected to the second spherical base (42), and the second ball head (37) being rotatable relative to the second spherical base (42); a second limiting bolt (41), the second limiting bolt (41) being connected to the second connecting hole (15), the second limiting bolt (41) being arranged on the outside of the second connecting arm (14) and being used for limiting the position of the second spherical base (42), and a gap being arranged between the second limiting bolt (41) and the second ball head (37); a second limiting snap ring (45), the second limiting snap ring (45) being arranged in the second connecting hole (15) and located on the inner side of the second connecting arm (14), and being used for limiting the position of the second spherical base (42); A second dust cover (44), the second dust cover (44) is arranged on the second connecting column (36) for preventing dust.

29. The upper swing arm assembly according to claim 28, characterized in that: The first spherical base (2) and the second spherical base (42) are made of wear-resistant composite material.

30. The upper swing arm assembly according to claim 26, characterized in that: The connecting portion comprises: a fourth connecting hole (32) and a fifth connecting hole (35), wherein the fourth connecting hole (32) and the fifth connecting hole (35) are arranged on the connecting rod body (31) and are used for externally connecting to a shock absorber assembly or a sub-frame assembly; The connecting rod body (31) is a rectangular column, the first connecting column (33) and the second connecting column (36) are circular columns, and the width of the connecting rod body (31) is greater than the diameters of the first connecting column (33) and the second connecting column (36).

31. A suspension mechanism, characterized in that: Comprising an upper swing arm assembly according to any one of claims 21-30.

32. A vehicle, characterized in that: Comprising a suspension mechanism according to claim 31.

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