Upper support of shock absorber and active shock absorber

Abstract

The utility model relates to the technical field of shock absorbers, and provides an upper support seat of a shock absorber and an active shock absorber. The upper support seat of the shock absorber includes: a shell, provided with a connecting ear; a rubber bushing, at least partially accommodated in the shell and pressed against the inner wall of the shell, the rubber bushing having an axial hole; a rigid inner core, including a shoulder portion and an inner lining portion, the inner lining portion is obliquely embedded in the lower area of ​​the rubber bushing from bottom to top, and the shoulder portion extends out of the axial hole. The upper support seat of the shock absorber of the utility model effectively increases the upward supporting force of the upper support seat by obliquely embedding the inner lining portion of the rigid inner core in the lower area of ​​the rubber bushing from bottom to top, and is particularly suitable for active shock absorbers.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbers, in particular to an upper support seat of a shock absorber and an active shock absorber. Background Art

[0002] The upper support of the shock absorber is the key part connecting the shock absorber and the vehicle body, and plays an important role in the stability and comfort of the vehicle body.

[0003] Traditional shock absorbers only provide damping, while the suspension springs of the vehicle suspension support the axle load of the entire vehicle. With the development of shock absorbers, some active shock absorbers have emerged. An example of an active shock absorber is: by increasing or decreasing the oil pressure inside the active shock absorber, the piston rod of the active shock absorber can provide an active upward or downward force to support the vehicle suspension and achieve active increase or decrease in the suspension height.

[0004] For vehicles equipped with active shock absorbers, the axle load of the entire vehicle is shared by the active shock absorber and the suspension spring. At this time, the upper support seat needs to bear a continuous upward support force that is much greater than that of the upper support seat of a conventional shock absorber. How to increase the upward support force of the upper support seat, especially to adapt to the active shock absorber, is a problem that needs to be solved urgently.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the utility model, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0006] The utility model provides an upper support seat of a shock absorber and an active shock absorber, wherein the inner lining of a rigid inner core is tiltedly embedded in the lower area of ​​a rubber bushing from bottom to top, effectively increasing the upward supporting force of the upper support seat, and is particularly suitable for active shock absorbers.

[0007] According to one aspect of the utility model, an upper support seat of a shock absorber is provided, comprising: a shell provided with a connecting ear; a rubber bushing at least partially accommodated in the shell and pressed against the inner wall of the shell, the rubber bushing having an axial hole; a rigid inner core comprising a shoulder portion and an inner lining portion, the inner lining portion being embedded in the lower area of ​​the rubber bushing at an angle from bottom to top, and the shoulder portion extending out of the axial hole.

[0008] The shell is used to accommodate the rubber bushing, and the connecting ear is used to connect with the vehicle body interface. The axial hole of the rubber bushing is for the piston rod assembly of the shock absorber to extend into. The rubber bushing is pressed against the inner wall of the shell and can be deformed along the inner wall of the shell under the action of the piston rod assembly, providing buffering and support for the piston rod assembly. The shoulder portion of the rigid inner core extends out of the axial hole of the rubber bushing for the assembly of the piston rod assembly; the lining portion of the rigid inner core is embedded in the lower area of ​​the rubber bushing, so that the rubber bushing is located above the lining portion. A larger portion forms a design with asymmetric rigidity, and the lining portion is inclined from bottom to top, which can guide the movement deformation of the rubber bushing, especially the upward movement deformation of the rubber bushing. Specifically, when the piston rod assembly drives the rubber bushing to move upward, the rubber bushing can provide a large bearing capacity. At this time, the stiffness of the rubber bushing is relatively large, which meets the requirement of the vehicle suspension equipped with active shock absorbers to actively provide an upward lifting adjustment force, and the rubber bushing is deformed and stretched under the guiding action of the inner lining, and the overall deformation is uniform and stable, avoiding irreversible damage; when the piston rod assembly drives the rubber bushing to move downward, the bearing capacity provided by the rubber bushing is relatively small compared to the upward movement, and the stiffness of the rubber bushing is relatively small. Because the active shock absorber mainly provides an upward lifting adjustment force, and downward adjustment is less common, it can also meet the needs.

[0009] Therefore, the upper support seat of the utility model is embedded in the lower area of ​​the rubber bushing from bottom to top through the inner lining of the rigid inner core, which effectively increases the upward supporting force of the upper support seat, is particularly suitable for active shock absorbers, and meets the stiffness requirements when the piston rod is actively adjusted upward.

[0010] In some embodiments, an inclination of an upper surface of the lining portion is greater than an inclination of a lower surface of the lining portion.

[0011] In this way, the inner diameter of the lining portion is thicker so as to facilitate assembly with the piston rod assembly, and the lining portion acts on the rubber bushing through the upper surface with a greater inclination, providing a better guiding effect for the upward movement of the rubber bushing.

[0012] In some embodiments, the upper support seat further includes: at least one frame, which is embedded in the rubber bushing obliquely from bottom to top and is located above the rigid inner core.

[0013] At least one frame is embedded in the rubber bushing obliquely from bottom to top, which can disperse the force of the rubber bushing so that the whole force of the rubber bushing is uniform; on the other hand, it also guides the upward movement of the rubber bushing.

[0014] In one embodiment, the inclination of the frame and the inclination of the upper surface of the lining portion are adapted to the inclination of the top wall of the shell.

[0015] In this way, when the piston rod assembly drives the rubber bushing to move upward, the rubber bushing can extend and deform by supporting the top wall of the shell under the guidance of the inner lining and the frame.

[0016] In one embodiment, the skeleton and the lining portion are vulcanized in the rubber bushing.

[0017] By vulcanization, the skeleton and the inner lining portion are stably formed in the rubber bushing.

[0018] In one embodiment, the top of the housing is provided with an opening, and the top of the rubber bushing protrudes from the opening.

[0019] When the rubber bushing moves upward under the action of an upward load, the pressure of the rubber bushing can be released by means of the opening of the shell, thereby reducing the possibility of creep of the rubber bushing.

[0020] In some embodiments, at least one frame is embedded in the rubber bushing; wherein the frame located at the top has a first guide portion extending in accordance with the top wall of the shell and a second guide portion extending in accordance with the opening.

[0021] Through the first guide part and the second guide part of the frame located at the top, when the rubber bushing is subjected to an upward load, the rubber bushing can be guided to stretch and deform along the top wall and the opening of the shell.

[0022] In some embodiments, the shell includes: a first shell; and a second shell embedded in the first shell, wherein an accommodating space for the rubber bushing is defined between an upper surface of the second shell and the first shell.

[0023] By assembling the second shell and the first shell, a space for accommodating the rubber bushing is formed.

[0024] In some embodiments, the side surface of the second shell is in contact with the side surface of the lower region of the first shell, and the bottom of the first shell is fixed to the bottom of the second shell by crimping.

[0025] In this way, the second housing is stably assembled with the first housing, so that the shock absorber is stably connected with the vehicle body interface through the upper support seat.

[0026] In some embodiments, the connecting ear is arranged outside the first shell, and the connecting ear is provided with a vehicle body positioning column.

[0027] The vehicle body positioning column is used to connect the upper support seat with the vehicle body interface.

[0028] In some embodiments, the housing and the connecting ears are made of sheet metal.

[0029] Sheet metal is used to facilitate the processing of the shell and the connecting lugs. In addition, compared with other processes such as casting, the shell and connecting lugs made by sheet metal process also have the following advantages: shorter mold development cycle, lower production and manufacturing costs, higher processing flexibility, higher possibility of later optimization design, and more in line with lightweight design requirements.

[0030] According to another aspect of the utility model, an active shock absorber is provided, which is connected to the vehicle body through the connecting ear of the upper support seat as described in any of the above embodiments; wherein the top end of the piston rod of the active shock absorber passes through the shoulder portion and the body of the piston rod abuts the lower surface of the shoulder portion, the fixing nut of the piston rod is threadedly connected to the top end of the piston rod and crimped onto the upper surface of the shoulder portion, and the side surfaces of the fixing nut and the side surfaces of the body of the piston rod abut the axial hole.

[0031] The piston rod and fixing nut of the active shock absorber are assembled with the inner lining of the rigid inner core embedded in the lower area of ​​the rubber bushing, which can form a design with asymmetric stiffness and guide the upward movement and deformation of the rubber bushing. When the piston rod and its fixing nut drive the rubber bushing to move upward, the rubber bushing provides a larger bearing capacity to meet the demand of the vehicle suspension equipped with the active shock absorber to actively provide an upward lifting adjustment force. The rubber bushing is deformed and stretched under the guiding action of the inner lining, and the overall deformation is uniform and stable to avoid irreversible damage.

[0032] Compared with the prior art, the beneficial effects of the present invention include at least:

[0033] The upper support seat of the utility model is embedded in the lower area of ​​the rubber bushing from bottom to top through the inner lining of the rigid inner core, which effectively increases the upward supporting force of the upper support seat. It is especially suitable for active shock absorbers and meets the stiffness requirements when the piston rod is actively adjusted upward, thereby improving the comfort, stability, controllability and safety of the vehicle.

[0034] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present utility model, and together with the specification, are used to explain the principles of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 A schematic diagram showing the structure of the upper support seat in an embodiment of the utility model is shown;

[0037] Figure 2 A schematic diagram showing the assembly structure of the upper support seat and the piston rod assembly in an embodiment of the utility model is shown;

[0038] Figure 3 A schematic diagram showing a stiffness characteristic curve of the upper support seat of the utility model;

[0039] Figure 4 A schematic diagram of the stiffness characteristic curve of the existing upper support seat is shown. DETAILED DESCRIPTION

[0040] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein. Instead, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0041] The words "first", "second" and similar words used in the specific description do not indicate any order, quantity or importance, but are only used to distinguish different components. In the description of the present utility model, "plurality" means two or more, unless otherwise clearly and specifically defined. In addition, in the description of the present utility model, when it is said that a device is "connected" to another device, this includes not only the case of direct connection, but also the case of indirect connection through other elements.

[0042] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in different embodiments may be combined with each other.

[0043] Figure 1 The structure of the upper support seat in the embodiment of the utility model is shown in FIG. Figure 2 The assembly structure of the upper support seat and the piston rod assembly in the embodiment of the utility model is shown; Figure 1 and Figure 2 As shown, the upper support seat of the shock absorber provided by the embodiment of the utility model includes:

[0044] The housing 10 is provided with a connecting ear 11;

[0045] The rubber bushing 20 is at least partially accommodated in the housing 10 and is pressed against the inner wall of the housing 10 . The rubber bushing 20 has an axial hole 22 .

[0046] The rigid inner core 30 includes a shoulder portion 32 and an inner lining portion 33 . The inner lining portion 33 is embedded in the lower region of the rubber bushing 20 in an inclined manner from bottom to top, and the shoulder portion 32 extends out of the shaft hole 22 .

[0047] The housing 10 is used to accommodate the rubber bushing 20, and the connecting ear 11 is used to connect with the vehicle body interface. The axial hole 22 of the rubber bushing 20 is for the piston rod assembly of the shock absorber (including the piston rod 60 and its fixing nut 66) to extend into. The rubber bushing 20 is pressed against the inner wall of the housing 10 and can be deformed along the inner wall of the housing 10 under the action of the piston rod assembly, providing buffering and support for the piston rod assembly. The shoulder portion 32 of the rigid inner core 30 extends out of the axial hole 22 of the rubber bushing 20 for the assembly of the piston rod assembly; the lining portion 33 of the rigid inner core 30 is embedded in the lower area of ​​the rubber bushing 20, so that the rubber bushing 20 is located above the lining portion 33. More parts, forming a design with asymmetric rigidity, and the lining portion 33 is inclined from bottom to top, which can guide the movement deformation of the rubber bushing 20, especially guide the upward movement deformation of the rubber bushing 20. Specifically, when the piston rod assembly drives the rubber bushing 20 to move upward, the rubber bushing 20 can provide a large bearing capacity. At this time, the stiffness of the rubber bushing 20 is relatively large, which meets the requirement of the vehicle suspension equipped with the active shock absorber to actively provide an upward lifting adjustment force, and the rubber bushing 20 is deformed and stretched under the guidance of the inner lining 33, and the overall deformation is uniform and stable, avoiding irreversible damage; when the piston rod assembly drives the rubber bushing 20 to move downward, the bearing capacity provided by the rubber bushing 20 is relatively small compared to the upward movement, and the stiffness of the rubber bushing 20 is small. Because the active shock absorber mainly provides an upward lifting adjustment force, and downward adjustment is less common, it can also meet the needs.

[0048] Therefore, the upper support seat of the utility model is embedded in the lower area of ​​the rubber bushing 20 from bottom to top through the inner lining portion 33 of the rigid inner core 30, which effectively increases the upward supporting force of the upper support seat, is particularly suitable for active shock absorbers, and meets the stiffness requirements when the piston rod 60 is actively adjusted upward.

[0049] Figure 3 The stiffness characteristic curve of the upper support seat of the utility model is shown in FIG. Figure 4 The stiffness characteristic curve of the existing upper support seat is shown schematically; Figure 3 In the figure, the horizontal axis is the deformation of the rubber bushing, the vertical axis is the bearing capacity provided by the rubber bushing, and the slope of the curve 510 is the stiffness of the rubber bushing; Figure 4 The parameters in are similar, the horizontal axis is the deformation of the rubber core, the vertical axis is the bearing capacity provided by the rubber core, and the slope of curve 520 is the stiffness of the rubber core. Figure 3 and Figure 4 As shown, the upward supporting force and the downward supporting force provided by the existing upper support seat are consistent, which cannot meet the requirement of the active shock absorber to mainly provide an upward lifting adjustment force; the upward deformation, upward bearing capacity and stiffness of the rubber bushing of the upper support seat of the utility model are much greater than those of the existing upper support seat. The upper support seat of the utility model can provide a sufficiently large upward supporting force to meet the specific stiffness curve required by the active shock absorber.

[0050] Continue to combine Figure 1 and Figure 2 As shown, in some embodiments, the inclination of the upper surface 33 a of the lining portion 33 is greater than the inclination of the lower surface 33 b of the lining portion 33 .

[0051] In this way, the inner diameter of the lining portion 33 is thicker to facilitate assembly with the piston rod assembly, and the lining portion 33 acts on the rubber bushing 20 through the upper surface 33 a with a greater inclination, providing a better guide for the upward movement of the rubber bushing 20 .

[0052] In some embodiments, the upper support seat further includes: at least one frame 40 , which is embedded in the rubber bushing 20 in an inclined manner from bottom to top and is located above the rigid inner core 30 .

[0053] At least one skeleton 40 is embedded in the rubber bushing 20 obliquely from bottom to top, which can disperse the force of the rubber bushing 20 to make the rubber bushing 20 uniformly stressed as a whole; on the other hand, it also guides the upward movement of the rubber bushing 20.

[0054] In one embodiment, the inclination of the frame 40 and the inclination of the upper surface 33 a of the lining portion 33 match the inclination of the top wall 10 a of the housing 10 .

[0055] In this way, when the piston rod assembly drives the rubber bushing 20 to move upward, the rubber bushing 20 can extend and deform by supporting the top wall 10 a of the housing 10 under the guidance of the inner lining 33 and the skeleton 40 .

[0056] In one embodiment, the skeleton 40 and the lining portion 33 are vulcanized in the rubber bushing 20. The skeleton 40 and the lining portion 33 are stably formed in the rubber bushing 20 by vulcanization.

[0057] In one embodiment, an opening 12 is provided at the top of the housing 10 , and a top of the rubber bushing 20 extends out of the opening 12 .

[0058] When the rubber bushing 20 moves upward under the action of an upward load, the pressure of the rubber bushing 20 can be released by means of the opening 12 of the housing 10 , thereby reducing the possibility of creep of the rubber bushing 20 .

[0059] In a conventional upper support seat, the rubber inner core is enclosed inside the shell by a top cover. Under continuous upward load, on the one hand, the top cover is easy to fall out, and on the other hand, the rubber inner core is prone to material creep or even permanent deformation under continuous large load extrusion, resulting in a reduction in the service life of the rubber inner core, thereby reducing the stability and comfort of the vehicle body, affecting the passenger experience, and even causing safety accidents. In the upper support seat of the utility model, the rubber bushing 20 is not completely enclosed inside the shell 10, but an opening 12 is formed at the top of the shell 10. Under the action of an upward load, the internal pressure of the rubber bushing 20 can be dispersed and released, greatly reducing the probability of material creep and permanent deformation of the rubber bushing 20, and can prevent the top cover from falling out and interfering with other components.

[0060] In some embodiments, at least one frame 40 is embedded in the rubber bushing 20 ; wherein the frame 40 located at the top has a first guide portion 41 extending in accordance with the top wall 10 a of the housing 10 and a second guide portion 42 extending in accordance with the opening 12 .

[0061] Through the first guide portion 41 and the second guide portion 42 of the frame 40 located at the top, when the rubber bushing 20 is subjected to an upward load, the rubber bushing 20 can be guided to stretch and deform along the top wall 10 a of the housing 10 and the opening 12 .

[0062] In some embodiments, the housing 10 includes: a first housing 15 ; and a second housing 16 embedded in the first housing 15 , wherein an accommodation space for the rubber bushing 20 is defined between an upper surface of the second housing 16 and the first housing 15 .

[0063] By assembling the second housing 16 with the first housing 15 , a space for accommodating the rubber bushing 20 is formed.

[0064] In some embodiments, the side surface of the second shell 16 is in contact with the side surface of the lower region of the first shell 15 , and the bottom of the first shell 15 is fixed to the bottom 160 of the second shell 16 via a crimping edge 150 .

[0065] In this way, the second housing 16 and the first housing 15 are stably assembled, so that the shock absorber is stably connected to the vehicle body interface through the upper support seat.

[0066] In some embodiments, the connecting ear 11 is disposed outside the first housing 15, and the connecting ear 11 is provided with a vehicle body positioning column 110. The vehicle body positioning column 110 is used to connect the upper support seat with the vehicle body interface.

[0067] In some embodiments, the housing 10 and the connecting ear 11 are made of sheet metal. The use of sheet metal facilitates the processing of the housing 10 and the connecting ear 11. The housing 10 and the connecting ear 11 can be specifically manufactured by sheet metal casting, sheet metal stamping, etc. In addition, compared with other processes such as casting processes, the housing 10 and the connecting ear 11 manufactured by sheet metal processes also have the following advantages: shorter mold development cycle, lower production and manufacturing costs, higher processing flexibility, higher possibility of later optimization design, and more in line with lightweight design requirements.

[0068] An embodiment of the utility model also provides an active shock absorber, which is connected to the vehicle body through the connecting ear 11 of the upper support seat described in any of the above embodiments; wherein, the top end of the piston rod 60 of the active shock absorber passes through the shoulder portion 32 and the body of the piston rod 60 abuts the lower surface of the shoulder portion 32, the fixing nut 66 of the piston rod 60 is screwed to the top end of the piston rod 60 and crimped to the upper surface of the shoulder portion 32, and the side of the fixing nut 66 and the side of the body of the piston rod 60 abut the shaft hole 22.

[0069] The piston rod 60 of the active shock absorber and its fixing nut 66 are assembled with the inner lining portion 33 of the rigid inner core 30 embedded in the lower area of ​​the rubber bushing 20, which can form a design with asymmetric stiffness and guide the upward movement and deformation of the rubber bushing 20, so that when the piston rod 60 and its fixing nut 66 drive the rubber bushing 20 to move upward, the rubber bushing 20 provides a larger bearing capacity to meet the demand of the vehicle suspension equipped with the active shock absorber to actively provide an upward lifting adjustment force, and the rubber bushing 20 is deformed and stretched under the guidance of the inner lining portion 33, and the overall deformation is uniform and stable to avoid irreversible damage.

[0070] In summary, the upper support seat of the utility model is embedded in the lower area of ​​the rubber bushing 20 from bottom to top through the inner lining portion 33 of the rigid inner core 30, which effectively increases the upward supporting force of the upper support seat, is particularly suitable for active shock absorbers, and meets the stiffness requirements when the piston rod 60 is actively adjusted upward, thereby improving the comfort, stability, handling and safety of the vehicle.

[0071] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An upper support seat of a shock absorber, characterized in that: include: The housing is provided with a connecting ear; a rubber bushing, at least partially accommodated in the housing and pressed against an inner wall of the housing, the rubber bushing having an axial hole; The rigid inner core comprises a shoulder portion and an inner lining portion. The inner lining portion is embedded in the lower area of ​​the rubber bushing obliquely from bottom to top, and the shoulder portion extends out of the shaft hole.

2. The upper support seat according to claim 1, characterized in that: The inclination of the upper surface of the lining portion is greater than the inclination of the lower surface of the lining portion.

3. The upper support seat according to claim 1, characterized in that: Also includes: At least one skeleton is embedded in the rubber bushing obliquely from bottom to top and is located above the rigid inner core.

4. The upper support seat according to claim 3, characterized in that: The inclination of the frame and the inclination of the upper surface of the lining portion are adapted to the inclination of the top wall of the shell.

5. The upper support seat according to claim 3, characterized in that: The skeleton and the inner lining portion are vulcanized in the rubber bushing.

6. The upper support seat according to any one of claims 1 to 5, characterized in that: The top of the shell is provided with an opening, and the top of the rubber bushing protrudes from the opening.

7. The upper support seat according to claim 6, characterized in that: At least one skeleton is embedded in the rubber bushing; The frame located at the top has a first guide portion extending in accordance with the top wall of the shell and a second guide portion extending in accordance with the opening.

8. The upper support seat according to claim 1, characterized in that: The housing comprises: a first shell; The second shell is embedded in the first shell, and an accommodating space for the rubber bushing is defined between the upper surface of the second shell and the first shell.

9. The upper support seat according to claim 8, characterized in that: The side surface of the second shell is in contact with the side surface of the lower region of the first shell, and the bottom of the first shell is fixed to the bottom of the second shell by crimping.

10. The upper support seat according to claim 8, characterized in that: The connecting ear is arranged outside the first shell, and the connecting ear is provided with a vehicle body positioning column.

11. The upper support seat according to any one of claims 1, 8 to 10, characterized in that: The shell and the connecting ear are made of sheet metal.

12. An active vibration absorber, characterized in that: The active shock absorber is connected to the vehicle body via the connecting ear of the upper support seat as claimed in any one of claims 1 to 11; Among them, the top end of the piston rod of the active shock absorber passes through the shoulder portion and the body of the piston rod abuts the lower surface of the shoulder portion, the fixing nut of the piston rod is screwed to the top end of the piston rod and crimped to the upper surface of the shoulder portion, and the side surface of the fixing nut and the side surface of the body of the piston rod abut the axial hole.

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