Swing arm assembly, air spring assembly and vehicle

Abstract

A swing arm assembly comprises a swing arm structure which is suitable for being movably connected with the bottom of an air spring. The swing arm assembly further comprises a base, and the base is suitable for being connected with the bottom of the air spring. And the base is movably connected with the swing arm structure. In the embodiment of the utility model, the swing arm structure is rotatably connected with the bottom of the air spring, so that the action of non-axial force is greatly reduced in the working process of the air spring, namely, an included angle in the air spring is hardly changed, and the inconsistency of axial and lateral pulling forces on the air spring can be avoided; and the jumping-out risk is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a swing arm assembly, an air spring assembly and a vehicle. Background Art

[0002] The air spring in the prior art will compress and release its elastic potential energy in its own axial direction as the vehicle moves. When the wheel bounces up and down, the air spring swings up and down around the connection point at the end of the vehicle body, causing the air spring to have a large angle change in its axial direction. The axial and lateral pulling forces on the air spring are inconsistent, and there is a risk of the air spring popping out. Summary of the invention

[0003] A series of simplified concepts are introduced in the Summary of the Invention, which will be further described in detail in the Detailed Description of the Invention. The Summary of the Invention of the present utility model does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the scope of protection of the claimed technical solution.

[0004] In order to at least partially solve the above problems, the first aspect of the present invention provides a swing arm assembly, which is used to connect the bottom of the air spring so that the air spring is movably connected to the swing arm assembly, including:

[0005] A swing arm structure, wherein the swing arm structure is suitable for being movably connected to the bottom of the air spring; the swing arm assembly also includes a base, wherein the base is suitable for being connected to the bottom of the air spring; and the base is movably connected to the swing arm structure.

[0006] According to the swing arm assembly provided by the first aspect of the utility model, the swing arm structure of the swing arm assembly is movably connected to the bottom of the air spring. Such a design enables the air spring to greatly reduce the effect of non-axial forces during operation, that is, there is almost no angle change inside the air spring, which can avoid the risk of the air spring being subjected to inconsistent axial and lateral pulling forces and causing popping.

[0007] According to some embodiments of the utility model, a rotating shaft mounting portion is provided on the swing arm structure, and the rotating shaft mounting portion is arranged between the first end and the second end of the swing arm structure;

[0008] The base is movably connected to the rotating shaft mounting portion via a rotating shaft, so that the air spring rotates relative to the swing arm structure with the axis of the rotating shaft mounting portion as the axis.

[0009] According to some embodiments of the present utility model, there are two rotating shaft mounting parts, which are respectively arranged on two swing arms of the swing arm structure.

[0010] According to some embodiments of the utility model, the rotating shaft is constructed as a convex column on the circumference of the base; the two rotating shafts are arranged opposite to each other and cooperate with the rotating shaft mounting portion to enable the base to be movably connected to the swing arm structure.

[0011] According to some embodiments of the present utility model, the swing arm structure extends in a first direction, and the shaft mounting portion extends in a second direction; wherein the first direction and the second direction are perpendicular to each other.

[0012] According to some embodiments of the utility model, the swing arm structure includes a first swing arm and a second swing arm that are arranged opposite to each other, an installation space is formed between the first swing arm and the second swing arm, and the base is arranged in the installation space.

[0013] According to some embodiments of the utility model, the base is provided with a sinking platform recessed toward a third direction, and the sinking platform is used to fix the air spring; wherein the third direction is perpendicular to the base.

[0014] According to some embodiments of the present utility model, the base further includes a positioning member, which is disposed on a side wall of the base and is a boss arranged along the circumference of the base, and the boss is used to position the air spring.

[0015] In order to achieve the above-mentioned purpose, a second embodiment of the utility model provides an air spring assembly, including the above-mentioned swing arm assembly.

[0016] According to an air spring assembly provided by the second aspect of the utility model, the bottom of the air spring is movably connected to the swing arm structure of the swing arm assembly, so that the air spring can greatly reduce the effect of non-axial forces during operation, that is, there is almost no angle change inside the air spring, which can avoid the risk of the air spring being subjected to inconsistent axial and lateral pulling forces and causing popping.

[0017] In order to achieve the above-mentioned purpose, a third aspect of the present utility model provides a vehicle, including the above-mentioned air spring assembly.

[0018] According to the vehicle provided by the third aspect of the utility model, the air spring assembly is installed in the height direction of the vehicle to provide a shock absorbing effect for the vehicle, and the swing arm structure performs a seesaw motion with the vibration of the wheel. Since the air spring assembly of the utility model is a split swing arm structure and air spring, the air spring and the swing arm structure are movably connected and the two can rotate relative to each other. Therefore, the air spring greatly reduces the effect of non-axial forces, that is, there is almost no angle change inside the air spring, which can avoid the risk of the air spring being subjected to inconsistent axial and lateral pulling forces and causing popping, while taking into account the shock absorbing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of a swing arm assembly according to a first embodiment of the utility model;

[0020] Figure 2 is a schematic diagram of an air spring assembly according to a second embodiment of the utility model;

[0021] Figure 3 is an exploded view of an air spring assembly according to the utility model;

[0022] Figure 4 It is a schematic diagram of a swing arm structure according to the utility model;

[0023] Figure 5 is a schematic diagram of a base according to the utility model;

[0024] Figure 6 It is a bottom view of the air spring according to the utility model.

[0025] Description of Reference Numerals

[0026] 1-swing arm structure, 11-first swing arm, 12-second swing arm, F1-first end, F2-second end;

[0027] 2-base, 21-rotating shaft, 22-positioning member, 23-through hole, 24-sinking platform;

[0028] 3-air spring, 4-rotating shaft mounting portion, 5-bushing;

[0029] D1-first direction, D2-second direction DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] The embodiments of the present utility model are described below with reference to the accompanying drawings.

[0032] The utility model provides a swing arm assembly, which can be used for other vibration reduction structures such as springs in addition to air springs 3. The swing arm assembly of the utility model can prevent the air spring 3 from popping out due to inconsistent axial and lateral pulling forces, and includes:

[0033] The swing arm structure 1 is suitable for being movably connected to the bottom of the air spring 3.

[0034] like Figure 1 and Figure 2As shown, in a specific embodiment, the swing arm structure 1 is composed of two swing arms arranged opposite to each other, and the bottom of the air spring 3 is arranged on the swing arm structure 1, that is, between the two swing arms. The air spring 3 and the swing arm structure 1 are split, and the bottom of the air spring 3 is movably connected to the swing arm structure 1, which can be a rotatable connection. When the swing arm structure 1 performs a seesaw motion, the air spring 3 can rotate relative to the swing arm structure 1, so the air spring 3 is greatly reduced in non-axial force, and only performs elastic movement in its axial direction, reducing the angle change generated inside the air spring 3, resulting in the risk of popping out, while also ensuring the vibration reduction effect of the air spring 3.

[0035] In some embodiments, a base 2 is also included, and the base 2 is suitable for connecting with the bottom of the air spring 3; and the base 2 is movably connected with the swing arm structure 1.

[0036] like Figure 1 As shown, in a specific embodiment, the swing arm assembly also has a base 2, and the base 2 can be a circular, square, oval or other structure capable of carrying the air spring 3. Further, the base 2 is butt-jointed with the bottom of the air spring 3. The base 2 is movably connected to the swing arm structure 1, and can be a rotational connection. When the swing arm structure 1 performs a seesaw motion, since the base 2 is rotatably connected to the swing arm structure 1, and the air spring 3 is butt-jointed with the base 2, the air spring 3 rotates with the base 2 relative to the swing arm structure 1. Therefore, the air spring 3 greatly reduces the lateral force it receives, and only performs elastic movement in its axial direction, thereby reducing the angle change generated inside the air spring 3, which may cause the risk of popping out, and at the same time, the vibration reduction effect of the air spring 3 can be ensured.

[0037] In some embodiments, the swing arm structure 1 is provided with a shaft mounting portion 4, which is disposed between the first end F1 and the second end F2 of the swing arm structure 1; the base 2 is movably connected to the shaft mounting portion 4 via a shaft 21, so that the air spring 3 rotates relative to the swing arm structure 1 with the axis of the shaft mounting portion 4 as the axis. The shaft 21 and the shaft mounting portion 4 can be further fixed by a bushing 5.

[0038] like Figure 1 and Figure 4As shown, in a specific embodiment, a shaft mounting portion 4 is provided between the first end F1 and the second end F2 of the swing arm structure 1. Preferably, the shaft mounting portion 4 can be provided in the middle between the first end F1 and the second end F2 of the swing arm structure 1, so that the swing arm assembly is subjected to uniform force, and the structure formed by the connection between the swing arm structure 1 and the bottom of the air spring 3 is more stable. The base 2 is connected to the shaft mounting portion 4 through the shaft 21 and the bushing 5. When the swing arm structure 1 performs a seesaw motion, the base 2 rotates relative to the swing arm structure 1 with the axis of the shaft mounting portion 4 as the axis. Therefore, the air spring 3 is greatly reduced in lateral force, and only performs elastic movement in its axial direction, which reduces the angle change generated inside the air spring 3 and the risk of popping out, while also ensuring the vibration reduction effect of the air spring 3.

[0039] In some embodiments, there are two rotating shaft mounting parts 4, which are respectively arranged on two swing arms of the swing arm structure 1.

[0040] like Figure 4 As shown, in a specific embodiment, the swing arm structure 1 is composed of two swing arms arranged opposite to each other, and the bottom of the air spring 3 is arranged on the swing arm structure 1, that is, between the two swing arms. The two rotating shaft mounting parts 4 can ensure the stability of the movable connection between the base 2 and the swing arm structure 1, and reduce the risk of the base 2 and the swing arm structure 1 being separated.

[0041] In some embodiments, the rotating shaft 21 is constructed as a convex column in the circumferential direction of the base 2; the two rotating shafts 21 are arranged opposite to each other and cooperate with the rotating shaft mounting portion 4 to enable the base 2 to be movably connected to the swing arm structure 1.

[0042] like Figure 1 and Figure 5 As shown, in a specific embodiment, the rotating shaft 21 on the base 2 is arranged in the circumferential direction of the base 2, and the rotating shaft 21 can be a convex column or other rotatable structure suitable for being connected with the rotating shaft mounting portion 4. Preferably, the rotating shaft 21 is a convex column, and two rotating shafts 21 are relatively arranged in the circumferential direction of the base 2, and two rotating shaft mounting portions 4 are also correspondingly arranged in the middle position of the swing arm structure 1. Each rotating shaft 21 is movably connected to the corresponding rotating shaft mounting portion 4, and can also be further fixed by a bushing 5. While keeping the base 2 firmly connected to the swing arm structure 1, ensure that the base 2 rotates relative to the swing arm structure 1 with the axis of the rotating shaft mounting portion 4 as the axis, avoid the air spring 3 from being subjected to a large non-axial force, resulting in the risk of popping out, and ensure the vibration reduction effect of the air spring 3.

[0043] In some embodiments, the swing arm structure 1 extends in a first direction D1 , and the shaft mounting portion 4 extends in a second direction D2 ; wherein the first direction D1 and the second direction D2 are perpendicular to each other.

[0044] like Figure 1As shown, in a specific embodiment, the swing arm structure 1 extends in a first direction D1, the first direction D1 is the length direction of the swing arm structure 1, and the shaft mounting portion 4 can be a protrusion or a recessed structure extending in a second direction D2, which can be rotatably connected to the shaft 21, wherein the second direction D2 is the direction of the center line of the two shaft mounting portions 4, and the second direction D2 is perpendicular to the length direction of the swing arm structure 1. This design makes the relative movement of the base 2 and the swing arm structure 1 non-interfering with each other, the swing arm structure 1 performs a seesaw motion, and the base 2 rotates relative to the swing arm structure 1 with the shaft mounting portion 4, that is, the second direction D2, as the axis. Furthermore, since the bottom of the air spring 3 is connected to the base 2, the air spring 3 is greatly reduced in non-axial force, and almost no angle change occurs, thereby preventing the air spring 3 from popping out.

[0045] In some embodiments, the swing arm structure 1 includes a first swing arm 11 and a second swing arm 12 that are arranged opposite to each other, an installation space is formed between the first swing arm 11 and the second swing arm 12, and the base 2 is arranged in the installation space.

[0046] like Figure 1 and Figure 4 As shown, in a specific embodiment, the swing arm structure 1 is composed of two swing arms arranged opposite to each other, namely, a first swing arm 11 and a second swing arm 12, a certain installation space is formed between the first swing arm 11 and the second swing arm 12, the shaft mounting portion 4 is arranged in the middle of the swing arms on both sides corresponding to the installation space, the base 2 can be arranged in the installation space, and the connection between the shaft 21 on the base 2 and the shaft mounting portion 4 can be plug-in or clip-on. When the swing arm structure 1 performs a seesaw motion, the base 2 rotates relative to the swing arm structure 1 in the installation space with the axis of the shaft mounting portion 4 as the axis, and the movements of the base 2 and the swing arm structure 1 do not interfere with each other.

[0047] In some embodiments, the base 2 is provided with a sink 24 that is recessed toward a third direction, and the sink 24 is used to fix the air spring 3 ; wherein the third direction is perpendicular to the base 2 .

[0048] like Figure 5 and Figure 6 As shown, in a specific embodiment, a sink 24 is provided on the base 2, the third direction refers to a direction perpendicular to the plane of the base 2, the sink 24 is recessed toward the third direction, and the bottom of the air spring 3 can be stuck into the sink 24, so that the connection between the air spring 3 and the base 2 can be more stable. Furthermore, a through hole 23 can be designed on the plane of the base 2, and a protrusion is correspondingly designed on the bottom of the air spring 3, which can pass through the through hole 23 on the base 2, so as to further achieve the stability of the connection between the air spring 3 and the base 2.

[0049] In some embodiments, the base 2 further includes a positioning member 22 . The positioning member 22 is disposed on a side wall of the base 2 and is a boss arranged along the circumference of the base 2 . The boss is used to position the air spring 3 .

[0050] like Figure 5 and Figure 6 As shown, in a specific embodiment, the circumferential inner wall of the base 2 is further provided with a boss, which may be an annular protrusion arranged along the circumference of the entire base 2, or may be other structures arranged along the circumference of the base 2 for positioning the air spring 3. The bottom of the air spring 3 cooperates with the positioning member 22, so that the connection between the air spring 3 and the base 2 is more secure.

[0051] A second aspect of the utility model provides an air spring assembly, comprising a swing arm assembly.

[0052] like Figure 2 and Figure 3 As shown, in a specific embodiment, the air spring assembly includes a swing arm assembly and an air spring 3, and the swing arm assembly consists of a swing arm structure 1 and a base 2, wherein the swing arm structure 1 includes two swing arms arranged opposite to each other, namely a first swing arm 11 and a second swing arm 12, and an installation space is formed between the first swing arm 11 and the second swing arm 12, and the base 2 is arranged in the installation space.

[0053] The middle positions of the first swing arm 11 and the second swing arm 12 are both provided with a shaft mounting portion 4, and the two shafts 21 on the base 2 are movably connected to the shaft mounting portions 4 on the first swing arm 11 and the second swing arm 12 respectively; further, the bottom of the air spring 3 is connected to the base 2, so that the air spring 3 can rotate relative to the swing arm structure 1. This design greatly reduces the non-axial force on the air spring 3, and almost no angle change occurs, avoiding the risk of the air spring 3 popping out laterally.

[0054] The base 2 has a depression 24 that is recessed toward a third direction, and the third direction refers to the axial direction of the air spring 3. The bottom of the air spring 3 is connected to the depression 24, which can be a connection method such as a snap connection or a knob. The base 2 also has a positioning member 22, which is a boss arranged along its circumferential inner wall. The positioning member 22 can be an annular protrusion arranged along the circumference of the entire base 2, or it can be other structures arranged along the circumference of the base 2 for positioning the air spring 3. Furthermore, a through hole 23 can be designed on the plane of the base 2, and a protrusion is correspondingly designed on the bottom of the air spring 3, which can pass through the through hole 23 on the base 2. The connection between the air spring 3 and the base 2 is more secure through the structures such as the depression 24, the positioning member 22, and the through hole 23 on the base 2.

[0055] A third aspect of the utility model provides a vehicle, comprising an air spring assembly.

[0056] like Figure 2As shown, in a specific embodiment, the vehicle includes an air spring assembly, which can be a shock absorber of the vehicle or a part of the vehicle suspension system. The air spring assembly is arranged in the height direction of the vehicle, wherein the first end F1 of the swing arm structure 1 can be connected to the subframe, and the second end F2 is connected to the steering knuckle. According to the arrangement of different suspension systems, the connecting parts at both ends of the swing arm structure 1 can also be changed. The swing arm structure 1 performs a seesaw motion with the vibration of the wheel, and the base 2 drives the air spring 3 to rotate relative to the swing arm structure 1, that is, the effect of non-axial force is greatly reduced, and only elastic movement is performed in its axial direction, that is, the height direction of the vehicle. Such a design can well reduce the risk of the air spring 3 jumping out laterally due to the change of the axial angle caused by the large lateral force, while also taking into account the vibration reduction effect of the air spring assembly.

[0057] 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.

[0058] 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.

[0059] 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 connection; it can be a mechanical connection or an electrical connection; 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.

[0060] 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.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means 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 utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described 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.

[0062] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A swing arm assembly, characterized in that: The invention comprises a swing arm structure (1), wherein the swing arm structure (1) is suitable for being movably connected to the bottom of an air spring (3); the swing arm assembly also comprises a base (2), wherein the base (2) is suitable for being connected to the bottom of the air spring (3); and the base (2) is movably connected to the swing arm structure (1).

2. The swing arm assembly according to claim 1, characterized in that: The swing arm structure (1) is provided with a rotating shaft mounting portion (4), and the rotating shaft mounting portion (4) is arranged between the first end (F1) and the second end (F2) of the swing arm structure (1); The base (2) is movably connected to the rotating shaft mounting portion (4) via a rotating shaft (21), so that the air spring (3) rotates relative to the swing arm structure (1) with the axis of the rotating shaft mounting portion (4) as the axis.

3. The swing arm assembly according to claim 2, characterized in that: There are two rotating shaft mounting parts (4), which are respectively arranged on the two swing arms of the swing arm structure (1).

4. The swing arm assembly according to claim 2, characterized in that: The rotating shaft (21) is constructed as a convex column on the circumference of the base (2); the two rotating shafts (21) are arranged opposite to each other and cooperate with the rotating shaft mounting portion (4) to enable the base (2) to be movably connected to the swing arm structure (1).

5. The swing arm assembly according to claim 2, characterized in that: The swing arm structure (1) extends in a first direction (D1), and the shaft mounting portion (4) extends in a second direction (D2); wherein the first direction (D1) and the second direction (D2) are perpendicular to each other.

6. The swing arm assembly according to claim 1, characterized in that: The swing arm structure (1) comprises a first swing arm (11) and a second swing arm (12) which are arranged opposite to each other, an installation space is formed between the first swing arm (11) and the second swing arm (12), and the base (2) is arranged in the installation space.

7. The swing arm assembly according to claim 1, characterized in that: The base (2) is provided with a sink (24) recessed in a third direction, and the sink (24) is used to fix the air spring (3); wherein the third direction is perpendicular to the base (2).

8. The swing arm assembly according to claim 1, characterized in that: The base (2) further comprises a positioning member (22), wherein the positioning member (22) is arranged on the side wall of the base (2) and is a boss arranged along the circumference of the base (2), and the boss is used to position the air spring (3).

9. An air spring assembly, characterized in that: Comprising the swing arm assembly as described in any one of claims 1-8.

10. A vehicle, characterized in that: Includes the air spring assembly as described in claim 9.

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