Hanging type rubber suspension, automobile and method

Abstract

The invention relates to the technical field of gearbox suspension and motor suspension, in particular to a hanging type rubber suspension, an automobile and a method, a hanging type suspension cushion assembly comprises an automobile body side suspension support, a circular opening is formed in the top face of the automobile body side suspension support, a main spring inner core is coaxially arranged on the automobile body side suspension support, and a rubber main spring is vulcanized between the main spring inner core and the circular opening; one side of the vehicle body side suspension support horizontally extends outwards to form a first fixing plate face and vertically extends downwards to form a second fixing plate face, and the vehicle body side suspension support is fixed to the side, close to a gearbox or a motor, of a vehicle body longitudinal beam through the fixing plate faces. The gearbox side suspension support is used for being fixed to a gearbox or a motor, an embedded stud is arranged on the top of the gearbox side suspension support, and the embedded stud penetrates through the main spring inner core to achieve installation guiding between the gearbox side suspension support and the automobile body side suspension support.

Description

Technical Field

[0001] The present invention relates to the technical field of gearbox suspension and motor suspension, in particular to a hanging type rubber suspension, a vehicle and a method. Background Art

[0002] Compared with the gearboxes of traditional fuel vehicles, the motors of new energy vehicles are smaller and have higher power density. The application of new motors such as some flat wire motors has further reduced the size of the motors. In order to lower the center of gravity of the vehicle, optimize the front and rear weight distribution of the vehicle, and meet the requirements of vehicle styling and spatial layout, the motors are usually arranged at the bottom of the vehicle, at a lower position relative to the longitudinal beam of the vehicle body, while traditional rubber suspension is installed on the top of the longitudinal beam of the vehicle body, resulting in a longer distance from the motor to the longitudinal beam. In addition, for some small-displacement fuel vehicles, their gearboxes are also smaller, and there will also be a problem of a longer distance from the gearbox to the longitudinal beam.

[0003] Since the motor or the gearbox of a small-displacement fuel vehicle is far away from the longitudinal beam, the vibration isolation performance of the traditional rubber suspension is significantly reduced. The main reason is that on the one hand, the connection distance between the rubber main spring and the gearbox or motor increases, which causes the vibration transmission path to become longer and the vibration attenuation effect during the transmission process to become worse, so that the occupants of the vehicle can perceive more obvious vibrations, affecting driving comfort; on the other hand, the traditional rubber suspension itself has relatively low torsional stiffness. Under conditions such as vehicle starting and acceleration, the powertrain may produce large torsional vibrations, affecting the vehicle's handling stability and ride comfort. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a hanging rubber suspension, a vehicle and a method to solve the problem that the connection distance between the rubber main spring and the gearbox or motor increases, resulting in a decrease in the suspension vibration isolation performance.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions: In a first aspect, a hanging rubber suspension comprises: The hanging-type suspension cushion assembly includes a body-side suspension bracket, a top surface of which is provided with a circular opening for coaxially arranging a main spring inner core, a rubber main spring vulcanized between the main spring inner core and the circular opening, and one side of the body-side suspension bracket extending horizontally outward to form a first fixing plate surface and also extending vertically downward to form a second fixing plate surface. The body-side suspension bracket is fixed to the side of the body longitudinal beam near the gearbox or motor through the fixing plate surface; The gearbox side suspension bracket is used to be fixed on the gearbox or motor. A pre-embedded stud is provided on the top. The pre-embedded stud passes through the inner core of the main spring to achieve installation guidance between the gearbox side suspension bracket and the vehicle body side suspension bracket.

[0006] As a further implementation method, the fixed plate surface includes several fixed blocks, each of which is provided with a through hole; one group of through holes on the first fixed plate surface is opened to absorb tolerance; the fixed blocks of the second fixed plate surface are arranged in an eight-shaped shape on both sides relative to the vehicle body side suspension bracket; the first fixed plate surface and the second fixed plate surface are arranged in an L-shape on one side of the vehicle body side suspension bracket.

[0007] As a further implementation method, the main spring inner core includes two continuous and integrated sections, namely the first inner core of the upper section and the second inner core of the lower section. The first inner core is set to an inverted cone shape, and the second inner core is a columnar structure. The inner side of the main spring inner core is provided with a channel that cooperates with the embedded stud.

[0008] As a further implementation method, the rubber main spring includes a rubber main spring rib vulcanized between the circumference of the first inner core and the circular opening. The rubber main spring rib is conical, the upper opening of its inner through hole is large and the lower opening is small, and the upper end outer diameter of its main structure is smaller than the lower end outer diameter.

[0009] As a further implementation method, the top end of the inner core of the main spring is engaged with the upper limit plate, and the upper rubber limit block extends upward from the outer periphery of the rubber main spring rib. When the gearbox or motor moves downward, the upper limit plate contacts the upper rubber limit block.

[0010] As a further implementation method, an outer circumferential rubber limit block is extended downward from the outer circumference of the rubber main spring rib, and the lower end of the outer circumferential rubber limit block is set as a bottom rubber limit block; an inner circumferential rubber limit block is extended downward from the inner circumference of the rubber main spring rib, and the lower end of the inner circumferential rubber limit block is lower than the bottom rubber limit block, and the inner circumferential limit block is fitted on the circumferential side of the second inner core.

[0011] As a further implementation method, an annular space is formed between the bottom rubber limit block and the inner circumferential rubber limit block for installing an intermediate limiter. The intermediate limiter is sleeved on the circumferential side of the inner circumferential rubber limit block. The intermediate limiter is also clamped on the inner core of the main spring near the lower end. When the gearbox or motor moves in the horizontal direction, the intermediate limiter can contact the outer circumferential rubber limit block.

[0012] As a further implementation method, the bottom end of the inner core of the main spring is clamped into the lower limit plate, and the top of the lower limit plate is also in contact with the bottom surface of the intermediate limiter. When the gearbox or motor moves upward, the lower limit plate contacts the bottom rubber limit block.

[0013] In a second aspect, a car is provided, on which any one of the above-described hanging rubber suspensions is installed.

[0014] The third aspect is a method for installing a hanging rubber suspension, wherein the gearbox side suspension bracket is fixed on the gearbox or motor, and the body side suspension bracket is fixed to the side of the body longitudinal beam close to the gearbox or motor through a fixing plate surface to achieve the hanging of the body side suspension bracket; the gearbox or motor is lifted so that the embedded studs on the gearbox side suspension bracket pass through the main spring inner core to achieve installation guidance between the gearbox side suspension bracket and the body side suspension bracket, after the top end of the embedded stud extends to the top surface position of the upper limit plate clamped by the top end of the main spring inner core, the connecting nut is installed to achieve fixation to obtain any of the above-described hanging rubber suspensions.

[0015] The beneficial effects of the present invention are as follows: 1. The present invention allows the suspension cushion assembly to be suspended on the side of the vehicle body longitudinal beam close to the gearbox or motor, shortening the distance between the suspension and smaller-displacement gearboxes or motors. This solves the problem of decreased suspension vibration isolation performance due to increased connection distance between the rubber main spring and the gearbox or motor. The circular rubber main spring structure also improves the horizontal rubber stiffness.

[0016] 2. The present invention arranges the two sets of fixing blocks on the second fixing plate in an "eight" shape, tilted to the sides. This frees up space below the vehicle body-side suspension bracket. This prevents the embedded studs on the transmission-side suspension bracket from colliding with the edge of the transmission or motor due to the small distance between them and the two sets of fixing blocks on the second fixing plate after the embedded studs on the transmission-side suspension bracket are installed in the main spring core, thus affecting the stability of the suspension structure and protecting the power structure.

[0017] 3. The installation of the gearbox side suspension bracket and the vehicle body side suspension bracket of the present invention can be guided by the embedded studs, and the embedded studs can be easily installed by passing through the inner core of the main spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0019] Figure 1 2 is a schematic structural diagram of a hanging rubber suspension according to an embodiment of the present invention; Figure 2 1 is a schematic diagram of the assembly of a hanging rubber mount according to an embodiment of the present invention; Figure 3 is an axial cross-sectional view of a hanging type suspension cushion assembly according to an embodiment of the present invention; Figure 4 1 is a schematic diagram of the vehicle body side suspension bracket structure in an embodiment of the present invention; Figure 5 2 is a schematic structural diagram of a rubber main spring according to an embodiment of the present invention; Figure 61 is a schematic structural diagram of a transmission side suspension bracket according to an embodiment of the present invention; Figure 7 Schematic diagram of the installation of the hanging suspension cushion assembly and the vehicle body longitudinal beam in an embodiment of the present invention; Figure 8 Schematic diagram of the gearbox side suspension bracket and gearbox installation structure in an embodiment of the present invention Figure 9 1 is a schematic structural diagram of a hanging rubber mount after installation on a vehicle according to an embodiment of the present invention.

[0020] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0021] Among them: 1- hanging suspension cushion assembly, 2- gearbox side suspension bracket, 3- connecting nut, 4- body longitudinal beam, 5- gearbox or motor; 11- body side suspension bracket, 12- rubber main spring, 13- main spring inner core, 14- upper limit plate, 15- middle limiter, 16- lower limit plate; 111- first fixed plate surface, 112. second fixed plate surface, 113. first through hole, 131- first inner core, 132. second inner core, 114. second through hole; 121- rubber main spring rib, 122- upper rubber limit block, 123- outer circumferential rubber limit block, 124- bottom rubber limit block, 125- inner circumferential rubber limit block; 21- gearbox side suspension bracket body, 22- embedded stud, 23- through hole. DETAILED DESCRIPTION

[0022] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those skilled in the art to which the present invention belongs.

[0023] Example 1 In a typical embodiment of the present invention, referring to Figures 1-9 As shown, a suspended rubber mount includes a suspended suspension cushion assembly 1, a transmission-side suspension bracket 2, and a connecting nut 3. The transmission-side suspension bracket 2 is mounted on the transmission or motor 5, and the suspended suspension cushion assembly 1 is mounted on the vehicle body longitudinal beam 4 and located on the side of the vehicle body longitudinal beam 4 close to the transmission or motor 5, so that the suspended suspension cushion assembly 1 is close to the transmission or motor 5. The transmission-side suspension bracket 2 is connected to the suspended suspension cushion assembly 1 via embedded studs 22 and connecting nuts 3.

[0024] like Figure 2 As shown, the hanging suspension cushion assembly 1 includes a vehicle body side suspension bracket 11 , a rubber main spring 12 , a main spring inner core 13 , an upper limit plate 14 , an intermediate limiter 15 , and a lower limit plate 16 .

[0025] The top surface of the vehicle body side suspension bracket 11 is provided with a circular opening for arranging the rubber main spring 12 and other structures. One side thereof extends horizontally outward to form a first fixing plate surface 111, and at the same time extends vertically downward to form a second fixing plate surface 112. Figure 2 As shown, the first fixing plate surface 111 and the second fixing plate surface 112 are arranged in an L shape on one side of the vehicle body side suspension bracket 11 .

[0026] The first fixing plate surface 111 is two fixing blocks extending horizontally from one side of the vehicle body side suspension bracket 11, and the second fixing plate surface 112 is two fixing blocks extending downward in the vertical direction from the same side of the vehicle body side suspension bracket 11. A first through hole 113 is provided on the fixing block. The provision of the first through hole 113 makes it easy to fix the vehicle body side suspension bracket 11 to the vehicle body longitudinal beam 4 using fixing parts such as bolts.

[0027] The first fixing plate surface 111 is fixedly connected to the top surface of the vehicle body longitudinal beam 4, and the second fixing plate surface 112 is fixedly connected to the side surface of the vehicle body longitudinal beam 4 close to the gearbox or motor 5, so that the part of the vehicle body side suspension bracket 11 with a circular opening is hung on one side of the vehicle body longitudinal beam 4, as shown in FIG. Figure 7 shown.

[0028] It can be understood that the first fixing plate surface 111 and the second fixing plate surface 112 each have two fixing points for fixing the vehicle body side suspension bracket 11 to the vehicle body longitudinal beam 4 .

[0029] like Figure 4 As shown, the second through hole 114 on one of the fixing blocks on the first fixing plate surface 111 is open, and the through holes on the other three fixing blocks are first through holes 113. By setting an open second through hole 114, when the body side suspension bracket 11 is fixed to the body longitudinal beam, the second through hole 114 can absorb the tolerance, thereby facilitating the stable installation of the body side suspension bracket 11 on the body longitudinal beam.

[0030] This embodiment can make it possible to hang the suspension cushion assembly on the side of the vehicle body longitudinal beam close to the gearbox or motor, thereby shortening the distance between the suspension and the gearbox or motor with a smaller displacement, and solving the problem of decreased suspension vibration isolation performance due to the increased connection distance between the rubber main spring and the gearbox or motor.

[0031] like Figure 4 As shown, the fixing blocks of the second fixing plate surface are arranged in an eight-shaped manner on both sides relative to the vehicle body side suspension bracket. By arranging the two groups of fixing blocks on the second fixing plate surface to be tilted to both sides, the space below the vehicle body side suspension bracket 11 can be made free to prevent the embedded studs 22 on the gearbox side suspension bracket 2 from being installed in the main spring core. The edge of the gearbox or motor 5 is prevented from touching the two groups of fixing blocks on the second fixing plate surface due to the small distance between them, which affects the stability of the suspension structure and protects the power structure.

[0032] The vehicle body side suspension bracket 11 is an integrated casting structure, and can also be a sheet metal welding structure. The main spring inner core 13 is arranged on the inner side of the circular opening of the vehicle body side suspension bracket 11 and is coaxially arranged with the circular opening. The rubber main spring 12 is vulcanized between the main spring inner core 13 and the circular opening.

[0033] like Figure 3 As shown, a circular through hole is provided in the center of the main spring inner core 13 for the embedded bolt 22 on the gearbox side suspension bracket 2 to pass through, so as to facilitate installation.

[0034] The structure of the vulcanized rubber main spring 12 includes a rubber main spring rib 121 , an upper rubber limit block 122 , an outer circumferential rubber limit block 123 , a bottom rubber limit block 124 , and an inner circumferential rubber limit block 125 .

[0035] like Figure 3 As shown, the main spring core 13 comprises two continuous, integrated sections: an upper first core 131 and a lower second core 132. The first core 131 is tapered, while the second core 132 is a hollow column. Both the first and second cores 131 and 132 have a common circular through-hole, serving as a channel for the embedded stud 22 to mate with.

[0036] The outer diameter of the upper end of the first inner core 131 is larger than the outer diameter of the lower end. Correspondingly, the rubber main spring rib 121 is conical, and the upper opening of the inner through hole is large and the lower opening is small, so that the rubber main spring rib 121 can be fitted at the peripheral position of the first inner core 131. The outer diameter of the upper end of its main structure is smaller than the outer diameter of the lower end. The purpose of designing the conical angle of the main spring inner core 13 is to improve the vertical stiffness of the rubber main spring, that is, when subjected to vertical force, the force is decomposed in the direction of the rubber main spring rib 121 through the conical surface.

[0037] Extending upward from the outer circumference of the rubber main spring rib 121 is an upper rubber stopper 122, and extending downward from an outer circumferential rubber stopper 123. The lower end of the outer circumferential rubber stopper 123 is provided with a bottom rubber stopper 124. Extending downward from the inner circumference of the rubber main spring rib 121 is an inner circumferential rubber stopper 125. This inner circumferential rubber stopper 125 is a hollow cylindrical structure, with its lower end lower than the bottom rubber stopper 124. An annular space is formed between the bottom rubber stopper 124 and the inner circumferential rubber stopper 125 for mounting the intermediate stopper 15. In this embodiment, the stopper structures of the rubber main spring 12 are all arranged in an annular shape.

[0038] Optionally, an annular step structure is provided at the top of the first inner core 131 of the main spring inner core 13, and the upper limit plate 14 is engaged with the annular step structure at the top of the first inner core 131 by means of an interference fit. When the gearbox or motor 5 moves downward, the upper limit plate 14 contacts the upper rubber stopper 122, acting as a buffer and limiter.

[0039] Optionally, the intermediate limiter 15 is a cast aluminum structure or a plastic structure. The intermediate limiter 15 is arranged in a ring shape, and its inner bottom end is connected to the main spring inner core 13 near the lower end by an interference fit. The top surface of its inner bottom end is also in contact with the lower end of the inner circumferential rubber limit block 125. At the same time, the main body of the intermediate limiter 15 is arranged on the outside of the inner circumferential rubber limit block 125, and the inner circumferential rubber limit block 125 is located on the side of the second inner core 132.

[0040] The top of the intermediate limiter 15 is higher than the bottom rubber limit block 124, and the bottom end is lower than the bottom rubber limit block 124. When the gearbox or motor 5 moves in the horizontal direction, the intermediate limiter 15 can contact the outer circumferential rubber limit block 123, playing a role of buffering and limiting.

[0041] Optionally, the lower limit plate 16 is a sheet metal structure, which is clamped to the lower end of the main spring inner core 13 by interference fit, and the top of the lower limit plate 16 is also in contact with the bottom surface of the intermediate limiter 15.

[0042] When the gearbox or the motor 5 moves upward, the lower limit plate 16 contacts the bottom rubber limit block 124 to play a role of buffering and limiting.

[0043] like Figure 1 and Figure 6 As shown, the gearbox side suspension bracket 2 includes a gearbox side suspension bracket body 21, on which embedded studs 22 are provided, and a plurality of through holes 23 are provided on the gearbox side suspension bracket body 21. The gearbox side suspension bracket body 21 is fixed to the gearbox or motor 5 through the through holes 23 and the fixing parts. Figure 8 shown.

[0044] like Figure 1 As shown, the transmission side suspension bracket body 21 passes through the main spring core 13 through the embedded stud 22, and the embedded stud 22 extends above the upper limit plate 14 and is installed with a connecting nut 3 to realize the connection between the hanging suspension cushion assembly 1 and the transmission side suspension bracket 2.

[0045] This example utilizes a circular rubber main spring structure to increase horizontal rubber stiffness. The transmission-side and vehicle-side mounts are easily installed using pre-buried studs for guidance.

[0046] This embodiment has a high degree of universality and can adapt to different gearboxes by simply changing the gearbox side suspension bracket.

[0047] Example 2 In a typical embodiment of the present invention, referring to Figures 1-9 As shown, a car is installed with the hanging rubber suspension as described in Example 1. The car is a pure electric car, an extended-range car, or a fuel car with a smaller displacement.

[0048] Example 3 In a typical embodiment of the present invention, a method for installing a suspended rubber mount is described. The vehicle installation sequence is as follows: the vehicle body-side mount bracket is secured to the vehicle body longitudinal beam near the gearbox or motor via the first through-hole in the fixing block and the corresponding fixings, thereby suspending the vehicle body-side mount bracket. The gearbox-side mount bracket 21 is secured to the gearbox or motor 5 via the through-hole 23 and the fixings.

[0049] Lift the gearbox or motor so that the embedded stud 22 on the gearbox side suspension bracket passes through the main spring inner core 13 to achieve installation guidance between the gearbox side suspension bracket and the vehicle body side suspension bracket. The embedded stud 22 cooperates with the main spring inner core 13 to achieve rapid docking of the gearbox side suspension bracket and the vehicle body side suspension bracket. After the top of the embedded stud extends to the top surface of the upper limit plate where the top of the main spring inner core is engaged, install the connecting nut 3 and tighten it to the specified torque to secure it. Figure 7-Figure 9 shown.

[0050] This embodiment utilizes a circular hanging rubber mount, extending the rubber mount above the transmission or motor 5 via the vehicle-side mount bracket 11. A circular rubber main spring 12 is attached to the transmission-side mount bracket 2 via a pre-embedded stud 22. This design offers the advantages of a simple structure, a reduced number of parts, low cost, and easy installation. The annular rubber main spring 12 improves horizontal rubber stiffness. The present invention is highly versatile and adaptable to different transmissions, requiring only modifications to the transmission-side mount bracket 2.

[0051] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A hanging rubber suspension, characterized in that: include: The hanging-type suspension cushion assembly includes a body-side suspension bracket, a top surface of which is provided with a circular opening for coaxially arranging a main spring inner core, a rubber main spring vulcanized between the main spring inner core and the circular opening, and one side of the body-side suspension bracket extending horizontally outward to form a first fixing plate surface and also extending vertically downward to form a second fixing plate surface. The body-side suspension bracket is fixed to the side of the body longitudinal beam near the gearbox or motor through the fixing plate surface; The gearbox side suspension bracket is used to be fixed on the gearbox or motor. A pre-embedded stud is provided on the top. The pre-embedded stud passes through the inner core of the main spring to achieve installation guidance between the gearbox side suspension bracket and the vehicle body side suspension bracket.

2. The hanging rubber suspension according to claim 1, characterized in that: The fixed plate surface includes several fixed blocks, each of which is provided with a through hole; one group of through holes on the first fixed plate surface is open to absorb tolerance; the fixed blocks of the second fixed plate surface are arranged in an eight-shaped shape on both sides relative to the vehicle body side suspension bracket; the first fixed plate surface and the second fixed plate surface are arranged in an L-shape on one side of the vehicle body side suspension bracket.

3. The hanging rubber suspension according to claim 1, characterized in that: The main spring inner core includes two sections that are continuous and integrated, namely the first inner core of the upper section and the second inner core of the lower section. The first inner core is set to an inverted cone shape, and the second inner core is a columnar structure. A channel is provided on the inner side of the main spring inner core to cooperate with the embedded stud.

4. The hanging rubber suspension according to claim 3, characterized in that: The rubber main spring includes a rubber main spring rib vulcanized between the circumference of the first inner core and the circular opening. The rubber main spring rib is conical, with a large upper opening and a small lower opening of the inner through hole. The outer diameter of the upper end of the main structure is smaller than the outer diameter of the lower end.

5. The hanging rubber suspension according to claim 4, characterized in that: The top end of the inner core of the main spring is engaged with the upper limit plate, and the outer periphery of the rubber main spring rib extends upward to form an upper rubber limit block. When the gearbox or the motor moves downward, the upper limit plate contacts the upper rubber limit block.

6. The hanging rubber suspension according to claim 4, characterized in that: An outer circumferential rubber limit block is extended downward from the outer circumference of the rubber main spring rib, and the lower end of the outer circumferential rubber limit block is set as a bottom rubber limit block; an inner circumferential rubber limit block is extended downward from the inner circumference of the rubber main spring rib, and the lower end of the inner circumferential rubber limit block is lower than the bottom rubber limit block, and the inner circumferential limit block is matched on the circumferential side of the second inner core.

7. The hanging rubber suspension according to claim 6, characterized in that: An annular space is formed between the bottom rubber limit block and the inner circumferential rubber limit block, which is used to install an intermediate limiter. The intermediate limiter is sleeved on the circumferential side of the inner circumferential rubber limit block. The intermediate limiter is also clamped on the inner core of the main spring near the lower end. When the gearbox or motor moves in the horizontal direction, the intermediate limiter can contact the outer circumferential rubber limit block.

8. The hanging rubber suspension according to claim 7, characterized in that: The bottom end of the main spring inner core is clamped in the lower limit plate, and the top of the lower limit plate is also in contact with the bottom surface of the intermediate limiter. When the gearbox or the motor moves upward, the lower limit plate is in contact with the bottom rubber limit block.

9. An automobile, characterized in that: A hanging rubber suspension according to any one of claims 1 to 8 is installed on a car.

10. A method for installing a hanging rubber suspension, characterized in that: The gearbox side suspension bracket is fixed on the gearbox or motor, and the body side suspension bracket is fixed to the side of the body longitudinal beam close to the gearbox or motor through a fixing plate to realize the hanging of the body side suspension bracket; lift the gearbox or motor so that the embedded studs on the gearbox side suspension bracket pass through the main spring inner core to realize the installation guide between the gearbox side suspension bracket and the body side suspension bracket. After the top end of the embedded stud extends to the top surface position of the upper limit plate clamped by the top end of the main spring inner core, the connecting nut is installed to achieve fixation to obtain the hanging rubber suspension as described in any one of claims 1-8.

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