Hydraulic bushing and vehicle having the same

Abstract

The application provides a hydraulic bushing and a vehicle with the same. The hydraulic bushing comprises a main spring, two independent mounting cavities, a liquid guide structure, a first flow channel plate and a second flow channel plate. The first flow channel plate and the second flow channel plate are connected with the main spring. A first liquid cavity is formed between the inner side wall of the first flow channel plate and the main spring. A second liquid cavity is formed between the inner side wall of the second flow channel plate and the main spring. The outer surface of the first flow channel plate is provided with a first flow guide structure which is in communication with the first liquid cavity. The outer surface of the second flow channel plate is provided with a second flow guide structure which is in communication with the second liquid cavity. The first flow guide structure and the second flow guide structure are in communication. The flow channel adjusting valve is at least one. The flow channel adjusting valve is arranged in the interior of at least one of the first flow guide structure and the second flow guide structure. The flow channel adjusting valve is used for adjusting the flow capacity of at least one of the first flow guide structure and the second flow guide structure. The application solves the problem that the hydraulic bushing in the prior art cannot adjust the damping.

Description

Technical Field

[0001] This invention relates to the field of hydraulic bushing design technology, and more specifically, to a hydraulic bushing and a vehicle having the same. Background Technology

[0002] Currently, the commonly used bushings for passenger vehicle control arms are rubber bushings and hydraulic bushings. Rubber bushings are low-cost and can isolate a certain amount of vibration; hydraulic bushings provide damping force and have a good ability to attenuate vibrations. However, currently used hydraulic bushings can only provide high damping within a certain frequency range. The damping of these hydraulic bushings is not adjustable, and the frequency of impacts on the vehicle is related to vehicle speed: at higher speeds, the bushing experiences lower impact frequencies; at higher speeds, the bushing experiences higher impact frequencies. For current vehicles, many models offer comfort and sport modes. In sport mode, some handling is lost due to the damping of the hydraulic bushing. Because the damping of ordinary hydraulic bushings is not adjustable, it cannot simultaneously achieve both vehicle comfort and sportiness, nor can it balance damping force during high-speed and low-speed impacts, resulting in it only providing good comfort within a certain fixed speed range.

[0003] There is currently no effective solution to the aforementioned problems in the existing technology. Summary of the Invention

[0004] The main objective of this invention is to provide a hydraulic bushing and a vehicle having the same, in order to solve the problem that hydraulic bushings in the prior art cannot adjust damping.

[0005] To achieve the above objectives, according to one aspect of the present invention, a hydraulic bushing is provided, comprising: a main spring having two independent mounting cavities; a liquid guiding structure including a first flow channel plate and a second flow channel plate, the first and second flow channel plates being respectively located in the two mounting cavities, both the first and second flow channel plates being connected to the main spring, a first liquid cavity being formed between the inner sidewall of the first flow channel plate and the main spring, a second liquid cavity being formed between the inner sidewall of the second flow channel plate and the main spring, a first flow guiding structure communicating with the first liquid cavity being provided on the outer surface of the first flow channel plate, a second flow guiding structure communicating with the second liquid cavity being provided on the outer surface of the second flow channel plate, the first and second flow guiding structures being connected; and a flow channel regulating valve, at least one flow channel regulating valve being disposed inside at least one of the first and second flow guiding structures, the flow channel regulating valve being used to regulate the flow rate of at least one of the first and second flow guiding structures.

[0006] Furthermore, the first flow channel plate is a semi-circular arc-shaped plate structure, and the first flow guiding structure includes an arc-shaped main body groove extending circumferentially along the first flow channel plate. The first flow guiding structure also includes a mounting recess disposed on the outer surface of the first flow channel plate. The mounting recess communicates with the arc-shaped main body groove. The flow channel regulating valve is installed in the mounting recess. The flow channel regulating valve is movably disposed along the width direction of the first flow guiding structure or the width direction of the second flow guiding structure. The flow channel regulating valve has a hidden position completely located in the mounting recess, and the flow channel regulating valve has multiple working positions at least partially entering the arc-shaped main body groove.

[0007] Furthermore, the flow channel regulating valve includes a base and two side ears, which are located on both sides of the base along its length. The shape of the mounting recess is adapted to the shape of the flow channel regulating valve. When the flow channel regulating valve is in the hidden position, it is secured in the mounting recess by the two side ears.

[0008] Furthermore, the hydraulic bushing also includes an outer tube located outside the main spring. A controlled tooth is provided on the top of the base, and an opening is provided on the outer tube. The controlled tooth is connected to a drive structure located outside the outer tube through the opening.

[0009] Furthermore, a first sealing rubber is vulcanized on the outer surface of the first flow channel plate, and a second sealing rubber is vulcanized on the substrate. The first and second sealing rubbers form a quadrilateral structure, and the controlled teeth are located inside the quadrilateral structure.

[0010] Furthermore, the first flow channel plate and the second flow channel plate are configured with the same structure.

[0011] Furthermore, there are two first flow guiding structures, which are spaced apart along the width direction of the first flow channel plate. There are also two second flow guiding structures, which are spaced apart along the width direction of the second flow channel plate. The two first flow guiding structures are respectively arranged corresponding to the two second flow guiding structures.

[0012] Furthermore, the hydraulic bushing also includes an inner tube located inside the main spring, and the hydraulic bushing also includes two buffer rubbers. The two buffer rubbers are vulcanized on the inner sidewall of the first flow channel plate and the inner sidewall of the second flow channel plate, respectively. One buffer rubber is located between the inner tube and the first flow channel plate, and the other buffer rubber is located between the inner tube and the second flow channel plate.

[0013] Furthermore, a first gap is left between the buffer rubber and the first flow channel plate, and a second gap is left between the buffer rubber and the first flow channel plate.

[0014] According to another aspect of the present invention, a vehicle is provided, including a hydraulic bushing, wherein the hydraulic bushing is the hydraulic bushing described above.

[0015] By applying the technical solution of this invention, the flow rate of at least one of the first and second flow guiding structures is adjusted by setting a flow channel regulating valve, thereby adjusting the damping force range of the hydraulic bushing. Real-time adjustment of the damping force allows the vehicle to balance sportiness and comfort. The technical solution of this application effectively solves the problem in the prior art that the damping of hydraulic bushings cannot be adjusted. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0017] Figure 1 A schematic diagram of the structure of a first embodiment of the hydraulic bushing according to the present invention is shown;

[0018] Figure 2 A schematic diagram of a second embodiment of the hydraulic bushing according to the present invention is shown;

[0019] Figure 3 A schematic diagram of a third embodiment of the hydraulic bushing according to the present invention is shown;

[0020] Figure 4 A schematic diagram of a fourth embodiment of the hydraulic bushing according to the present invention is shown;

[0021] Figure 5 A schematic diagram of an embodiment of the flow channel regulating valve according to the present invention is shown;

[0022] Figure 6 A schematic diagram of a fifth embodiment of the hydraulic bushing according to the present invention is shown;

[0023] Figure 7 A schematic diagram of a sixth embodiment of the hydraulic bushing according to the present invention is shown;

[0024] Figure 8 A schematic diagram of a seventh embodiment of the hydraulic bushing according to the present invention is shown;

[0025] Figure 9 It shows Figure 8 A partial cross-sectional view of the embodiment at point DD;

[0026] Figure 10 A schematic diagram of the structure of an eighth embodiment of the hydraulic bushing according to the present invention is shown.

[0027] The above figures include the following reference numerals:

[0028] 1. Outer tube; 11. Opening; 2. Main spring; 3. Skeleton; 4. Inner tube; 5. Flow channel regulating valve; 51. First sealing rubber; 52. Controlled tooth; 53. Base; 54. Side ear; 6. First flow channel plate; 7. Buffer rubber; 8. Second flow channel plate; 61. Mounting recess; 62. First guide structure; 63. Second sealing rubber; 81. Second guide structure;

[0029] 100, vulcanized surface; 101, gap. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0033] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0034] Combination Figures 1 to 10As shown, a hydraulic bushing is provided according to a specific embodiment of this application.

[0035] The hydraulic bushing includes: a main spring 2, which has two independent mounting cavities; a liquid guiding structure, which includes a first flow channel plate 6 and a second flow channel plate 8, which are respectively located in the two mounting cavities. Both the first flow channel plate 6 and the second flow channel plate 8 are connected to the main spring 2. A first liquid cavity is formed between the inner sidewall of the first flow channel plate 6 and the main spring 2, and a second liquid cavity is formed between the inner sidewall of the second flow channel plate 8 and the main spring 2. A first flow guiding structure 62 communicating with the first liquid cavity is provided on the outer surface of the first flow channel plate 6, and a second flow guiding structure 81 communicating with the second liquid cavity is provided on the outer surface of the second flow channel plate 8. The first flow guiding structure 62 and the second flow guiding structure 81 are connected; and a flow channel regulating valve 5, which is at least one and is located inside at least one of the first flow guiding structure 62 and the second flow guiding structure 81. The flow channel regulating valve 5 is used to regulate the flow rate of at least one of the first flow guiding structure 62 and the second flow guiding structure 81.

[0036] By applying the technical solution of this embodiment, the flow rate of at least one of the first guide structure 62 and the second guide structure 81 is adjusted by setting the flow channel regulating valve 5, thereby adjusting the damping force range of the hydraulic bushing. Real-time adjustment of the damping force allows the vehicle to balance sportiness and comfort. The technical solution of this application effectively solves the problem that the damping of the hydraulic bushing cannot be adjusted in the prior art. In this solution, the flow rate is adjusted by adjusting the cross-sectional area of ​​the flow channels of the first guide structure 62 and the second guide structure 81. The flow channel regulating valve 5 can move inside the first guide structure 62 to block part of the flow channel, thus changing the cross-sectional area of ​​the flow channel. The flow channel regulating valve 5 can also move inside the second guide structure 81 to block part of the flow channel, thus changing the cross-sectional area of ​​the flow channel.

[0037] The reason why hydraulic bushing damping is not adjustable and the method of damping adjustment: For hydraulic bushings, the damping force is generated when liquid flows through different chambers in the flow channel, producing damping. The magnitude of the damping force of the hydraulic bushing is related to the stiffness of the main spring, the equivalent piston area, the volumetric stiffness of the chamber, the length of the flow channel, and the cross-sectional area of ​​the flow channel. In engineering applications, the damping force range of the bushing is mainly adjusted by adjusting the cross-sectional area of ​​the flow channel: the larger the cross-sectional area of ​​the flow channel, the larger the high damping force frequency range of the hydraulic bushing; the smaller the cross-sectional area of ​​the flow channel, the smaller the high damping force frequency range of the hydraulic bushing; when the flow channel of the hydraulic bushing is completely closed, the hydraulic bushing provides no damping.

[0038] Specifically, the rubber main spring 2 and the first flow channel plate 6, as well as the main spring 2 and the second flow channel plate 8, respectively form two independent liquid chambers. The two chambers are connected by flow channels on the flow channel plates, allowing the liquid in both chambers to flow through these channels. The liquid flow generates damping and dynamic stiffness. The liquid is typically a water / ethylene glycol mixture or an ethylene glycol / propylene glycol mixture.

[0039] Furthermore, the first flow channel plate 6 is a semi-circular arc-shaped plate structure. The first flow guiding structure 62 includes an arc-shaped main body groove extending circumferentially along the first flow channel plate 6. The first flow guiding structure 62 also includes a mounting recess 61 disposed on the outer surface of the first flow channel plate 6. The mounting recess 61 communicates with the arc-shaped main body groove. The flow channel regulating valve 5 is installed in the mounting recess 61. The flow channel regulating valve 5 is movably disposed along the width direction of the first flow guiding structure 62 or the width direction of the second flow guiding structure 81. The flow channel regulating valve 5 has a hidden position completely located in the mounting recess 61, and the flow channel regulating valve 5 has multiple working positions at least partially entering the arc-shaped main body groove. Figure 4 The top view of the first flow channel plate shown shows that the mounting recess 61 is preferably a T-shaped groove with a connecting port at one end, through which the flow channel regulating valve 5 can at least partially enter the arc-shaped main body groove.

[0040] Furthermore, the flow channel regulating valve 5 includes a base 53 and two side ears 54, which are located on opposite sides of the base 53 along its length. The shape of the mounting recess 61 is adapted to the shape of the flow channel regulating valve 5. When the flow channel regulating valve 5 is in the concealed position, it is engaged within the mounting recess 61 by the two side ears 54. The flow channel regulating valve 5 forms an inverted T-shaped structure that adapts to the T-shaped groove of the mounting recess 61. The flow channel regulating valve 5 is mounted within the mounting recess 61 through this structure, and it can move along the groove direction of the mounting recess 61 on the first flow channel plate 6.

[0041] Preferably, to reduce friction during movement, making control easier and preventing harmful wear between the flow channel regulating valve 5 and the first flow channel plate, lubricating grease is applied between the flow channel regulating valve 5 and the first flow channel plate. The type of lubricating grease can be selected as needed. Figure 2 The skeleton 3 is also shown in the image.

[0042] Furthermore, the hydraulic bushing also includes an outer tube 1, which is located outside the main spring 2. A controlled tooth 52 is provided on the top of the base 53, and an opening 11 is provided on the outer tube 1. The controlled tooth 52 is connected to the drive structure located outside the outer tube 1 through the opening 11.

[0043] To allow the flow channel regulating valve 5 to be controlled by the control mechanism, the flow channel regulating valve 5 has controlled teeth 52, and the outer tube 1 of the bushing has an opening 11. The control mechanism can drive the gear meshing with the controlled teeth 52 by a motor or other means to control the position of the flow channel regulating valve 5, thereby adjusting the flow channel cross-sectional area and achieving the purpose of adjusting the damping and dynamic stiffness of the hydraulic bushing.

[0044] Optionally, to reduce friction and harmful wear during movement, grease is also applied to the contact surfaces between the flow regulating valve 5 and the outer tube 1, especially between the sealing rubber and the outer tube 1. The type of grease can be selected as needed.

[0045] Furthermore, a first sealing rubber 51 is vulcanized on the outer surface of the first flow channel plate 6, and a second sealing rubber 63 is vulcanized on the substrate 53. The first sealing rubber 51 and the second sealing rubber 63 form a quadrilateral structure, and the controlled tooth 52 is located inside the quadrilateral structure. The first sealing rubber 51 and the second sealing rubber 63 are used to prevent liquid leakage.

[0046] Furthermore, the first flow channel plate 6 and the second flow channel plate 8 are configured with the same structure.

[0047] Furthermore, there are two first flow guiding structures 62, which are spaced apart along the width direction of the first flow channel plate 6. There are also two second flow guiding structures 81, which are spaced apart along the width direction of the second flow channel plate 8. The two first flow guiding structures 62 are respectively arranged corresponding to the two second flow guiding structures 81.

[0048] Furthermore, the hydraulic bushing also includes an inner tube 4 located inside the main spring 2, and two buffer rubbers 7. The two buffer rubbers 7 are vulcanized on the inner walls of the first flow channel plate 6 and the second flow channel plate 8, respectively. One buffer rubber 7 is located between the inner tube 4 and the first flow channel plate 6, and the other buffer rubber 7 is located between the inner tube 4 and the second flow channel plate 8. To maintain the integrity of the first flow channel plate 6 or the second flow channel plate 8 and improve the strength of the flow channel plate, the buffer rubbers 7 are bonded to the inner wall of the flow channel plate through a vulcanization process. To reduce friction between the buffer rubber 7 and the inner tube 4, thereby reducing harmful abnormal noise, grease is applied between the buffer rubber 7 and the inner tube 4. The hydraulic bushing can be installed on the front lower control arm or the rear trailing arm, or at other locations on the vehicle where hydraulic bushings are required.

[0049] Furthermore, a first gap is maintained between the buffer rubber 7 and the first flow channel plate 6, and a second gap is maintained between the buffer rubber 7 and the first flow channel plate 6. For example... Figure 7 As shown, the vulcanized surface 100 is the vulcanization process surface between the buffer rubber 7 and the inner wall of the flow channel plate. Gaps 101 are left between the two sides of the buffer rubber 7 and part of the inner wall of the flow channel plate.

[0050] According to another aspect of the present invention, a vehicle is provided, including a hydraulic bushing, wherein the hydraulic bushing is the hydraulic bushing described above.

[0051] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects: They provide a hydraulic bushing with adjustable flow channels, which adjusts the damping provided by the hydraulic bushing by opening and closing the flow channels; and adjusts the high-damping force range of the hydraulic bushing by adjusting the cross-sectional area of ​​the flow channels (i.e., the first guide structure 62 or the second guide structure 81). Based on an adjustable-damping control arm bushing, the present invention provides a simple and reliable mechanical structure—a flow channel regulating valve—that allows control of the cross-sectional area of ​​the hydraulic bushing flow channels. This enables adjustment of whether the bushing provides damping and the high-damping frequency range according to the vehicle mode and speed, thereby adapting to the vehicle's sport / comfort mode or providing better comfort over a wider speed range, thus resolving the contradiction of non-adjustable hydraulic bushings.

[0052] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0053] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this invention.

[0054] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A hydraulic bushing characterized by, The utility model relates to a kind of hydraulic bushings, including: Main spring (2), the main spring (2) has two independent installation cavities; Liquid guide structure, the liquid guide structure includes first flow channel plate (6) and second flow channel plate (8), the first flow channel plate (6) and the second flow channel plate (8) are located in two the installation cavity respectively, the first flow channel plate (6) and the second flow channel plate (8) are connected with the main spring (2), the inner side wall of the first flow channel plate (6) and the main spring (2) form first liquid cavity, the inner side wall of the second flow channel plate (8) and the main spring (2) form second liquid cavity, the outer surface of the first flow channel plate (6) is provided with the first flow guide structure (62) that communicates with the first liquid cavity, the outer surface of the second flow channel plate (8) is provided with the second flow guide structure (81) that communicates with the second liquid cavity, the first flow guide structure (62) and the second flow guide structure (81) are communicated; Flow channel adjusting valve (5), the flow channel adjusting valve (5) is at least one, the flow channel adjusting valve (5) is arranged in the inside of at least one of the first flow guide structure (62) and the second flow guide structure (81), and the flow channel adjusting valve (5) is used to adjust the flow of at least one of the first flow guide structure (62), the second flow guide structure (81); The first flow channel plate (6) is semicircular arc plate structure, the first flow guide structure (62) includes the arc main groove that is arranged along the circumference of the first flow channel plate (6) and is extended, the first flow guide structure (62) further includes installation recess (61) that is arranged on the outer surface of the first flow channel plate (6), the installation recess (61) is communicated with the arc main groove, the flow channel adjusting valve (5) is installed in the installation recess (61), the flow channel adjusting valve (5) is movably arranged along the width direction of the first flow guide structure (62) or the width direction of the second flow guide structure (81), the flow channel adjusting valve (5) has hidden position that is completely located in the installation recess (61), and the flow channel adjusting valve (5) has multiple working positions that at least part enters the arc main groove.

2. The hydraulic bushing of claim 1, wherein, The flow channel adjusting valve (5) includes base body (53) and two side ears (54), and two the side ear (54) is located on the length direction of the base body (53) two sides respectively, the installation recess (61) is shaped and the shape of the flow channel adjusting valve (5) is adapted, when the flow channel adjusting valve (5) is located in the hidden position, the flow channel adjusting valve (5) is clamped in the installation recess (61) by two the side ear (54).

3. The hydraulic bushing of claim 2, wherein, The hydraulic bushing further includes outer tube (1), the outer tube (1) is located outside the main spring (2), the top of the base body (53) is provided with controlled tooth (52), the outer tube (1) is provided with opening (11), the controlled tooth (52) is connected with the drive structure arranged outside the outer tube (1) through the opening (11).

4. The hydraulic bushing of claim 3, wherein, The first flow channel plate (6) is vulcanized with a first sealing rubber (51) on the outer side, the base (53) is vulcanized with a second sealing rubber (63), the first sealing rubber (51) and the second sealing rubber (63) form a quadrilateral structure, and the controlled tooth (52) is located inside the quadrilateral structure.

5. The hydraulic bushing of claim 4, wherein, The first flow channel plate (6) is provided in the same structure as the second flow channel plate (8).

6. The hydraulic bushing of claim 5, wherein, The first flow guiding structure (62) is two, the two first flow guiding structures (62) are arranged in the width direction of the first flow channel plate (6), the second flow guiding structure (81) is two, the two second flow guiding structures (81) are arranged in the width direction of the second flow channel plate (8), and the two first flow guiding structures (62) are respectively arranged corresponding to the two second flow guiding structures (81).

7. The hydraulic bushing of claim 1, wherein, The hydraulic bushing further comprises an inner tube (4) located inside the main spring (2), and further comprises a buffer rubber (7), the two buffer rubbers (7) are respectively vulcanized on the inner side walls of the first flow channel plate (6) and the second flow channel plate (8), one buffer rubber (7) is located between the inner tube (4) and the first flow channel plate (6), and the other buffer rubber (7) is located between the inner tube (4) and the second flow channel plate (8).

8. The hydraulic bushing of claim 7, wherein, The buffer rubber (7) and the first flow channel plate (6) leave a first gap, and the buffer rubber (7) and the first flow channel plate (6) leave a second gap.

9. A vehicle comprising a hydraulic bushing, characterized in that The hydraulic bushing is the hydraulic bushing in any one of claims 1 to 8.

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