Air spring, shock absorber and vehicle

Abstract

The air spring comprises an air chamber, a filling piece is arranged in the air chamber, and the filling piece is detachably connected with the air chamber. The rigidity of the air spring and the volume of the air chamber are in a negative correlation relationship, so that the air spring with the adjustable volume of the air chamber is designed, the rigidity of the air spring can be adjusted in a larger range by arranging the detachable filling piece in the air chamber, and the performance comfort and the operation stability of a vehicle chassis are obviously helped.

Description

Technical Field

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

[0002] The volume of the existing air spring auxiliary chamber is fixed and cannot be changed. The air spring stiffness can only be adjusted by using a piston. However, the adjustment range of this method is very limited and does not significantly improve the comfort and handling stability of the vehicle chassis performance. Utility Model Content

[0003] 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.

[0004] In order to at least partially solve the above problems, the utility model provides an air spring in a first aspect, wherein the air chamber volume of the air spring can be changed, and further, the stiffness of the air spring can be changed according to the change of the air chamber volume, including:

[0005] The air spring comprises an air chamber, a filling piece is arranged in the air chamber, and the filling piece is detachably connected to the air chamber.

[0006] According to the air spring provided by the first aspect of the utility model, a detachable filling piece is provided in the air chamber of the air spring, and the filling piece is used to change the volume of the air chamber; because the filling piece is detachable, the volume of the air chamber can be changed according to the presence or volume of the filling piece, and the volume of the air chamber is negatively correlated with the stiffness of the air spring, and the smaller the volume, the greater the stiffness, and vice versa. This design can freely and more widely adjust the stiffness of the air spring, which significantly helps the comfort and handling stability of the vehicle chassis performance.

[0007] According to some embodiments of the utility model, the air chamber includes a top seat upper cover and a top seat lower cover, and the top seat upper cover and the top seat lower cover are detachably connected; wherein the first end of the top seat upper cover and the first end of the top seat lower cover are detachably connected.

[0008] According to some embodiments of the present invention, the second end of the top seat lower cover extends toward the first direction to form the air chamber.

[0009] According to some embodiments of the present invention, a first fixing portion is at least partially formed on an inner surface of the air chamber.

[0010] According to some embodiments of the present invention, a second fixing portion is formed on the filling piece, and the first fixing portion cooperates with the second fixing portion so that the filling piece is detachably connected to the inner surface of the air chamber.

[0011] According to some embodiments of the utility model, the top seat upper cover and the top seat lower cover are detachably connected by bolts.

[0012] According to some embodiments of the present invention, a sealing gasket is further included, and the sealing gasket is arranged between the first end of the top seat upper cover and the first end of the top seat lower cover.

[0013] In order to achieve the above-mentioned purpose, a second embodiment of the present utility model provides a shock absorber, including the above-mentioned air spring.

[0014] According to a shock absorber provided by the second aspect of the utility model, the air chamber volume of the air spring can be changed as the filling piece is disassembled, and further, the volume of the filling piece also affects the volume of the air chamber volume. Since the air chamber volume is negatively correlated with the stiffness of the air spring, the smaller the volume, the greater the stiffness, so the smaller the volume, the better the shock absorption effect, and the filling piece and its detachable design significantly help the shock absorption performance of the shock absorber and even the comfort and handling stability of the vehicle chassis.

[0015] According to some embodiments of the present invention, the air chamber is configured as a secondary air chamber;

[0016] The second end of the top seat cover is disposed in the auxiliary air chamber and extends toward the first direction;

[0017] The second end of the top seat cover at least partially forms the first fixing portion, and the contact portion between the filling member and the second end of the top seat cover at least partially forms the second fixing portion;

[0018] The first fixing portion cooperates with the second fixing portion so that the filling piece can be detachably connected to the second end of the top seat cover.

[0019] In order to achieve the above-mentioned object, a third aspect of the present utility model provides a vehicle, comprising the above-mentioned shock absorber.

[0020] According to a vehicle provided by the third aspect of the utility model, a shock absorber is installed in the height direction of the vehicle to provide a shock absorbing effect for the vehicle, and the volume of the air chamber in the air spring is negatively correlated with the stiffness of the air spring, that is, the stiffness of the shock absorber. The smaller the air chamber volume, the greater the stiffness, and the better the shock absorbing effect of the shock absorber. The filling piece and its detachable design allow the air chamber volume to be varied, and the variation range is larger. Further, the comfort and handling stability of the vehicle chassis are better. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a partial cross-sectional view of an air spring of one embodiment of the utility model;

[0022] Figure 2 is a partial exploded view of an air spring according to an embodiment of the utility model;

[0023] Figure 3 is a cross-sectional view of an empty spring according to an embodiment of the utility model;

[0024] Figure 4 It is a schematic diagram of filling pieces of different volumes according to an embodiment of the utility model.

[0025] Description of Reference Numerals

[0026] 1-top seat upper cover, 2-top seat lower cover, 3-filling piece, 4-air chamber, 41-auxiliary air chamber, 5-first fixing part, 6-second fixing part, 7-bolt, 8-sealing gasket, 9-solenoid valve, 10-main air chamber, 11-bladder skin, 12-base, 13-piston. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, 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.

[0028] The embodiments of the present utility model are described below with reference to the accompanying drawings.

[0029] The utility model provides an air spring, which may also be other devices that compress air and utilize the elastic effect of air. The volume of the air spring chamber 4 of the utility model can be changed according to the presence or absence of the filling member 3 and the change of its volume, including:

[0030] The air chamber 4 has a filling piece 3 disposed therein, and the filling piece 3 is detachably connected to the air chamber 4.

[0031] like Figure 1 , Figure 2 and Figure 4As shown, in a specific embodiment, a filling piece 3 is provided in the air chamber 4 of the air spring. The filling piece 3 is an annular block structure, or a structure of other shapes that can be used to fill the volume of the air chamber 4. The filling piece 3 is arranged in the air chamber 4, and can also be removed from the air chamber 4 of the air spring. Since the volume of the air chamber 4 is negatively correlated with the stiffness of the air spring, when the filling piece 3 is removed from the air chamber 4, the volume of the air chamber 4 is the maximum volume, and the stiffness of the air spring is the minimum; when the filling piece 3 is placed in the air chamber 4, the volume of the air chamber 4 is less than the maximum volume, and the stiffness of the air spring increases; the volume of the filling piece 3 can also be adjusted, and the volume of the filling piece 3 is less than or equal to the maximum volume of the air chamber 4. When the filling piece 3 is placed in the air chamber 4, the larger its volume is, the smaller the volume of the air chamber 4 is, and the greater the stiffness of the air spring is, and further, the better the vibration reduction effect of the air spring is, and vice versa.

[0032] Specifically, when the air spring is in the design position, its stiffness C0 is:

[0033]

[0034] Among them, V0 is the volume of the gas inside the air spring at the design position. Therefore, the internal volume of the cavity is inversely correlated with the stiffness of the air spring, that is, the smaller the gas volume in the cavity, the greater the stiffness of the air spring, and vice versa, the larger the gas volume in the cavity, the smaller the stiffness of the air spring.

[0035] The filler 3 is removable and has a variable volume, so that the volume of the air chamber 4 of the air spring is variable, and the comfort and handling stability of the vehicle chassis are better. Furthermore, the filler 3 is also provided with a groove or a protrusion to facilitate the installation of the air chamber 4, thereby reducing the assembly effort of the workers.

[0036] In some embodiments, the air chamber 4 includes a top seat upper cover 1 and a top seat lower cover 2, and the top seat upper cover 1 and the top seat lower cover 2 are detachably connected; wherein, the first end of the top seat upper cover 1 and the first end of the top seat lower cover 2 are detachably connected.

[0037] like Figure 1 and Figure 2 As shown, in a specific embodiment, the air chamber 4 of the air spring is composed of at least two detachable parts. Preferably, the air chamber 4 is composed of a top seat upper cover 1 and a top seat lower cover 2. The top seat upper cover 1 and the top seat lower cover 2 are detachably connected. Specifically, in the axial direction of the air spring, the first end of the top seat upper cover 1 is connected to the first end of the top seat lower cover 2 to form the air chamber 4 of the air spring. The structure forming the air spring air chamber 4 is designed to be detachable, which is convenient for setting or removing the filling member 3 in the air chamber 4, thereby adjusting the volume of the air chamber 4, and further adjusting the stiffness of the air spring.

[0038] In some embodiments, the second end of the top seat lower cover 2 extends toward the first direction to form an air chamber 4 .

[0039] like Figure 1 As shown, in a specific embodiment, the top seat upper cover 1 and the top seat lower cover 2 are two separate structures. In the axial direction of the air spring, the top seat lower cover 2 has a first end and a second end. The first end of the top seat lower cover 2 is detachably connected to the first end of the top seat upper cover 1, and the second end of the top seat lower cover 2 is recessed in the first direction to form a top seat lower cover 2 with a U-shaped or half-rectangular cross section, wherein the first direction refers to the axial direction of the air spring. A space is formed between the first end of the top seat upper cover 1 and the second end of the top seat lower cover 2, and the top seat upper cover 1 and the top seat lower cover 2 are enclosed to form an air chamber 4.

[0040] In some embodiments, the inner surface of the air chamber 4 is at least partially formed with a first fixing portion 5 .

[0041] like Figure 2 As shown, in a specific embodiment, the inner surface of the air chamber 4 is provided with a first fixing portion 5, which may be a thread, a buckle or other structure for connection. Specifically, the second end of the top seat cover 1 is arranged in the air chamber 4, constituting part of the inner surface of the air chamber 4, and a thread is engraved on the second end of the top seat cover 1 for connecting the filler 3. Since the air spring will shake in its axial direction when performing elastic movement, this design can fix the filler 3 on the inner surface of the air chamber 4, avoiding the filler 3 shaking and hitting the inner surface of the air chamber 4, resulting in damage to the air spring.

[0042] In some embodiments, a second fixing portion 6 is formed on the filling piece 3 , and the first fixing portion 5 cooperates with the second fixing portion 6 so that the filling piece 3 can be detachably connected to the inner surface of the air chamber 4 .

[0043] like Figure 1 and Figure 2 As shown, in a specific embodiment, the second end of the top seat cover 1 is arranged in the air chamber 4 and is constructed as a cylindrical protrusion. The second end of the top seat cover 1 forms part of the inner surface of the air chamber 4, and a thread is engraved on a part of the second end of the top seat cover 1 to form a first fixing portion 5; correspondingly, the filler 3 is an annular member, which can be sleeved on the second end of the top seat cover 1, and the part where the filler 3 contacts the second end of the top seat cover 1 is engraved with a thread to form a second fixing portion 6. Further, the first fixing portion 5 is screwed with the second fixing portion 6, so as to fix the filler 3 on the inner surface of the air chamber 4, so as to avoid the filler 3 shaking and hitting the inner surface of the air chamber 4, resulting in damage to the air spring. Furthermore, the filler 3 is also provided with a groove or a protrusion, etc., which is convenient for installing the air inlet chamber 4, reducing the assembly effort of the workers.

[0044] In some embodiments, the top seat upper cover 1 and the top seat lower cover 2 are detachably connected via bolts 7 .

[0045] like Figure 1 and Figure 2 As shown, in a specific embodiment, the top seat cover 1 and the top seat lower cover 2 are two detachable structures, which can be connected together by bolts 7, so as to facilitate the installation and removal of the filling member 3 while increasing the stability of the air chamber 4, and preventing the top seat cover 1 and the top seat lower cover 2 from being separated due to the movement of the air spring. The number of bolts 7 should be confirmed according to the actual working pressure of the air spring, and the total clamping force of the bolts 7 should be greater than the maximum working pressure in the air chamber 4 to ensure that the top seat cover 1 and the top seat lower cover 2 are always clamped during the working process to reduce the risk of air leakage. Furthermore, the filling member 3 is also provided with a groove or a protrusion, etc., which is convenient for installing the air inlet chamber 4, reducing the assembly effort of the workers.

[0046] In some embodiments, a sealing gasket 8 is further included, and the sealing gasket 8 is disposed between the first end of the top seat upper cover 1 and the first end of the top seat lower cover 2 .

[0047] like Figure 1 and Figure 2 As shown, in a specific embodiment, the first end of the top seat upper cover 1 is connected to the first end of the top seat lower cover 2. Since the air chamber 4 is a closed space, a sealing gasket 8 can be arranged between the first end of the top seat upper cover 1 and the first end of the top seat lower cover 2, and the sealing effect of the air chamber 4 can also be achieved by glue injection or other sealing methods. Furthermore, a groove can also be designed between the first end of the top seat upper cover 1 and the first end of the top seat lower cover 2, and the sealing gasket 8 can be arranged in the groove, and the sealing gasket 8 is an H-shaped structure. When the air chamber 4 forms an air pressure type, one side of the sealing gasket 8 opens to prevent air leakage, thereby ensuring the air tightness of the air spring and maintaining the stiffness in the designed state.

[0048] A second aspect of the utility model provides a shock absorber, comprising the above-mentioned air spring.

[0049] like Figure 3 As shown, in a specific embodiment, the shock absorber includes an air spring, and a detachable filling member 3 is provided in the air chamber 4 of the air spring. The filling member 3 and its volume affect the volume of the air chamber 4, and further affect the stiffness of the air spring. The shock absorber provided with the air spring can further improve the comfort and stability of the person riding in the vehicle.

[0050] In some embodiments, the air chamber 4 is constructed as a secondary air chamber 41; the second end of the top seat cover 1 is arranged in the secondary air chamber 41 and extends in the first direction; wherein the second end of the top seat cover 1 at least partially forms a first fixing portion 5, and the contact portion between the filling piece 3 and the second end of the top seat cover 1 at least partially forms a second fixing portion 6; the first fixing portion 5 cooperates with the second fixing portion 6 so that the filling piece 3 can be detachably connected to the second end of the top seat cover 1.

[0051] like Figure 3As shown, the auxiliary air chamber 41 of the air spring is a detachable split structure, which is composed of a top seat upper cover 1 and a top seat lower cover 2 that are detachably connected, wherein the second end of the top seat upper cover 1 is constructed as a cylindrical protrusion and is arranged in the auxiliary air chamber 41, and the filling member 3 is connected to the inner surface of the auxiliary air chamber 41. Preferably, the filling member 3 can be connected to the second end of the top seat upper cover 1 by threads. Since the auxiliary air chamber 41 is a detachable structure, the filling member 3 is also detachably connected to the auxiliary air chamber 41, so the filling member 3 can be freely assembled or disassembled from the auxiliary air chamber 41, so that the stiffness of the air spring can be adjusted in a wider range.

[0052] Furthermore, the air spring also includes accessories such as a bladder skin 11, a solenoid valve 9, and a base 12. Among them, the bladder skin 11 forms a main air chamber 10, and the connection between the auxiliary air chamber 41 and the main air chamber 10 is realized by opening and closing the solenoid valve 9: when the solenoid valve 9 is opened, the main and auxiliary air chambers 41 are connected, and the auxiliary air chamber 41 participates in the spring stiffness adjustment. Specifically, the stiffness of the air spring can be adjusted by the presence or absence of the filler 3 and its volume. At the same time, a piston 13 structure can be provided on the outside of the top seat lower cover 2 to further cooperate with the auxiliary air chamber 41 provided with the filler 3 to adjust the stiffness of the air spring. This design can make the vehicle chassis more comfortable and stable.

[0053] A third aspect of the utility model provides a vehicle, comprising the above-mentioned shock absorber.

[0054] The shock absorber with air spring is arranged on the suspension system of the vehicle. By relying on the filling member 3 in the auxiliary air chamber 41, the air spring stiffness can be adjusted in a wider range, further optimizing the vibration reduction effect and ride comfort of the vehicle.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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. An air spring, characterized in that: The air spring comprises an air chamber (4), a filling piece (3) is arranged in the air chamber (4), and the filling piece (3) is detachably connected to the air chamber (4); the air chamber (4) comprises a top seat upper cover (1) and a top seat lower cover (2), and the top seat upper cover (1) and the top seat lower cover (2) are detachably connected; wherein the first end of the top seat upper cover (1) is detachably connected to the first end of the top seat lower cover (2).

2. The air spring according to claim 1, characterized in that The second end of the top seat lower cover (2) extends towards the first direction to form the air chamber (4).

3. The air spring according to claim 1, characterized in that The inner surface of the air chamber (4) is at least partially formed with a first fixing portion (5).

4. The air spring according to claim 3, characterized in that A second fixing portion (6) is formed on the filling piece (3), and the first fixing portion (5) cooperates with the second fixing portion (6) so that the filling piece (3) can be detachably connected to the inner surface of the air chamber (4).

5. The air spring according to claim 1, wherein: The top seat upper cover (1) and the top seat lower cover (2) are detachably connected via bolts (7).

6. The air spring according to claim 1, wherein: It also includes a sealing gasket (8), which is arranged between the first end of the top seat upper cover (1) and the first end of the top seat lower cover (2).

7. A shock absorber, characterized in that: The air spring comprises the air spring described in any one of claims 1 to 6.

8. The vibration absorber according to claim 7, characterized in that The air chamber (4) is configured as a main air chamber (10); The second end of the top seat cover (1) is arranged in the main air chamber (10) and extends toward the first direction; The second end of the top seat cover (1) at least partially forms the first fixing portion (5), and the contact portion between the filling member (3) and the second end of the top seat cover (1) at least partially forms the second fixing portion (6); The first fixing portion (5) cooperates with the second fixing portion (6) so that the filling piece (3) is detachably connected to the second end of the top seat cover (1).

9. A vehicle, characterized in that: A vibration absorber comprising the vibration absorber according to any one of claims 7 to 8.

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