A hanger type rubber suspension, vehicle and method

Abstract

The present application relates to the technical fields of gearbox suspension and motor suspension, and particularly relates to a hanging type rubber suspension, an automobile and a method, the hanging type suspension cushion assembly comprises a vehicle body side suspension bracket, a top surface of the vehicle body side suspension bracket is provided with a circular opening, the circular opening is used for coaxially arranging a main spring inner core, vulcanization of rubber main springs is arranged between the main spring inner core and the circular opening, a first fixing plate surface is formed by outward horizontal extension of one side of the vehicle body side suspension bracket, a second fixing plate surface is formed by downward vertical extension of the vehicle body side suspension bracket, and the vehicle body side suspension bracket is fixed on a vehicle body longitudinal beam through the fixing plate surfaces and close to a gearbox or a motor; a gearbox side suspension bracket is used for being fixed on the gearbox or the motor, a pre-buried stud is arranged on a top portion of the gearbox side suspension bracket, the pre-buried stud penetrates through the main spring inner core to realize installation guidance between the gearbox side suspension bracket and the vehicle body side suspension bracket.

Description

Technical Field

[0001] This invention relates to the field of gearbox mounting and motor mounting technology, and in particular to a suspended rubber mount, automobile, and method. Background Technology

[0002] Compared to the transmissions in traditional gasoline vehicles, the motors in new energy vehicles are smaller and have higher power density. The application of new types of motors, such as 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, and meet the needs of vehicle styling and spatial layout, the motors are usually located under the vehicle, relatively low to the longitudinal beams. In contrast, traditional rubber mounts are installed on top of the longitudinal beams, resulting in a greater distance between the motor and the longitudinal beams. In addition, for some small-displacement gasoline vehicles, the transmission size is also small, which also leads to the problem of a large distance between the transmission and the longitudinal beams.

[0003] Because the distance between the electric motor or the transmission in a small-displacement gasoline vehicle and the longitudinal beam is relatively far, the vibration isolation performance of traditional rubber suspension mounts decreases significantly. The main reasons are as follows: Firstly, the increased connection distance between the rubber main spring and the transmission or motor leads to a longer vibration transmission path and a poorer vibration attenuation effect during transmission, making the vibration more noticeable to the occupants and affecting driving comfort. Secondly, traditional rubber suspension mounts themselves have relatively low torsional stiffness. Under conditions such as vehicle start-up and acceleration, the powertrain may generate large torsional vibrations, affecting the vehicle's handling stability and ride comfort. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a suspended rubber suspension, an automobile, and a method to solve the problem of decreased vibration isolation performance of the suspension caused by the increased connection distance between the rubber main spring and the gearbox or motor.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: In a first aspect, a suspended rubber suspension includes: The suspended soft pad assembly includes a vehicle side suspension bracket with a circular opening on its top surface for coaxially mounting the inner core of the main spring. A rubber main spring is vulcanized between the inner core of the main spring and the circular opening. One side of the vehicle side suspension bracket extends horizontally outward to form a first fixing plate and also extends vertically downward to form a second fixing plate. The vehicle side suspension bracket is fixed to the side of the vehicle longitudinal beam near the gearbox or motor through the fixing plates. The gearbox side suspension bracket is used to fix it to the gearbox or motor. It has a pre-embedded stud on the top, which passes through the inner core of the main spring to realize the installation guide between the gearbox side suspension bracket and the vehicle body side suspension bracket.

[0006] As a further implementation, the fixing plate includes several fixing blocks, each with through holes; one set of through holes on the first fixing plate is open to absorb tolerances; the fixing blocks on the second fixing plate are arranged in a figure-eight shape relative to the vehicle side suspension bracket; the first fixing plate and the second fixing plate are arranged in an L-shape on one side of the vehicle side suspension bracket.

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

[0008] As a further implementation, the rubber main spring includes a rubber main spring rib vulcanized between the periphery 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 in its inner through hole, and the outer diameter of the upper end of its main structure is smaller than the outer diameter of the lower end.

[0009] As a further implementation, the top of the main spring core is engaged with the upper limit plate, and the outer periphery of the rubber main spring tendon extends upward to form an upper rubber limit block. When the gearbox or motor moves downward, the upper limit plate contacts the upper rubber limit block.

[0010] As a further implementation, the outer periphery of the rubber main spring extends downward to form an outer circumferential rubber limiting block, and the lower end of the outer circumferential rubber limiting block is set as a bottom rubber limiting block; the inner periphery of the rubber main spring extends downward to form an inner circumferential rubber limiting block, the lower end of the inner circumferential rubber limiting block is lower than the bottom rubber limiting block, and the inner circumferential limiting block is engaged with the second inner core periphery.

[0011] As a further implementation, an annular space is formed between the bottom rubber limiting block and the inner circumferential rubber limiting block for installing an intermediate limiter. The intermediate limiter is sleeved on the periphery of the inner circumferential rubber limiting block and is also engaged with 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 limiting block.

[0012] As a further implementation, the bottom end of the main spring core is engaged with the lower limit plate, and the top of the lower limit plate is 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] Secondly, a type of automobile equipped with a suspended rubber suspension as described in any of the above.

[0014] Thirdly, a method for installing a suspended rubber suspension, wherein the gearbox-side suspension bracket is fixed to the gearbox or motor, and the vehicle-side suspension bracket is fixed to the side of the vehicle longitudinal beam near the gearbox or motor via a fixing plate, so as to suspend the vehicle-side suspension bracket; the gearbox or motor is raised so that the pre-embedded stud on the gearbox-side suspension bracket passes through the inner core of the main spring to achieve installation guidance between the gearbox-side suspension bracket and the vehicle-side suspension bracket; after the top of the pre-embedded stud extends to the position of the upper limit plate that is engaged with the top of the inner core of the main spring, a connecting nut is installed to fix it, thus obtaining the suspended rubber suspension as described above.

[0015] The beneficial effects of the present invention are as follows: 1. This invention enables the suspension pad assembly to be suspended on the side of the vehicle body longitudinal beam near the gearbox or motor, reducing the distance between the suspension and the gearbox or motor with a smaller displacement, thus solving the problem of decreased vibration isolation performance of the suspension caused by the increased connection distance between the rubber main spring and the gearbox or motor; the use of a circular rubber main spring structure can improve the rubber stiffness in the horizontal direction.

[0016] 2. The present invention arranges the two sets of fixing blocks on the second fixing plate in a V-shape to both sides, which can make room below the vehicle side suspension bracket. This prevents the edge of the gearbox or motor from touching the two sets of fixing blocks on the second fixing plate due to the small distance between them after the pre-embedded studs on the gearbox side suspension bracket are installed in the inner core of the main spring, 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 facilitated by the pre-embedded studs, which can pass through the inner core of the main spring. Attached Figure Description

[0018] The accompanying drawings, which form part of this invention, 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 improper limitation of the invention.

[0019] Figure 1 This is a schematic diagram of the suspended rubber suspension structure in an embodiment of the present invention; Figure 2 This is an assembly diagram of the suspended rubber suspension in an embodiment of the present invention; Figure 3 This is an axial sectional view of the suspended soft pad assembly in an embodiment of the present invention; Figure 4 This is a schematic diagram of the vehicle body side suspension bracket structure in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the rubber main spring in an embodiment of the present invention; Figure 6This is a schematic diagram of the structure of the gearbox-side suspension bracket in an embodiment of the present invention; Figure 7 This is a schematic diagram of the installation of the suspended soft pad assembly and the vehicle body longitudinal beam in an embodiment of the present invention; Figure 8 This is a schematic diagram of the gearbox side suspension bracket and gearbox mounting structure in an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the suspended rubber suspension after installation on the vehicle in an embodiment of the present invention.

[0020] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.

[0021] The components are as follows: 1-Suspended suspension pad assembly, 2-Gearbox side suspension bracket, 3-Connecting nut, 4-Longitudinal beam of the vehicle body, 5-Gearbox or motor; 11-Vehicle side suspension bracket, 12-Rubber main spring, 13-Main spring inner core, 14-Upper limit plate, 15-Intermediate 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 Implementation

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

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

[0024] like Figure 2 As shown, the suspended soft pad assembly 1 includes a vehicle 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 side suspension bracket 11 has a circular opening for mounting structures such as the rubber main spring 12. One side extends horizontally outward to form a first fixing plate 111, and also extends vertically downward to form a second fixing plate 112. Figure 2 As shown, the first fixed plate 111 and the second fixed plate 112 are arranged in an L-shape on one side of the vehicle body side suspension bracket 11.

[0026] The first fixing plate 111 consists of two fixing blocks extending horizontally from one side of the vehicle side suspension bracket 11, and the second fixing plate 112 consists of two fixing blocks extending vertically downward from the same side of the vehicle side suspension bracket 11. The fixing blocks are provided with a first through hole 113. The setting of the first through hole 113 facilitates the use of bolts and other fasteners to fix the vehicle side suspension bracket 11 to the vehicle longitudinal beam 4.

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

[0028] It is understandable that there are two fixing points on each of the first fixing plate surface 111 and the second fixing plate surface 112, which realizes the fixing of the vehicle side suspension bracket 11 to the vehicle 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 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 vehicle side suspension bracket 11 is fixed on the vehicle longitudinal beam, the second through hole 114 can absorb the tolerance, which makes it easy for the vehicle side suspension bracket 11 to be stably installed on the vehicle longitudinal beam.

[0030] This embodiment allows the suspension pad assembly to be suspended on the side of the vehicle body longitudinal beam near the gearbox or motor, reducing the distance between the suspension and the gearbox or motor with a smaller displacement, thus solving the problem of decreased vibration isolation performance of the suspension caused by the increased connection distance between the rubber main spring and the gearbox or motor.

[0031] like Figure 4 As shown, the fixing blocks on the second fixing plate are arranged in a figure-eight shape relative to the side suspension bracket of the vehicle body. By tilting the two sets of fixing blocks on the second fixing plate to the sides, space can be provided below the side suspension bracket 11 of the vehicle body. This prevents the edge of the gearbox or motor 5 from touching the two sets of fixing blocks on the second fixing plate due to the small distance between them after the pre-embedded studs 22 on the gearbox side suspension bracket 2 are installed in the inner core of the main spring, which would affect the stability of the suspension structure and protect the power structure.

[0032] The side suspension bracket 11 is a one-piece cast structure or a sheet metal welded structure. The main spring core 13 is located inside the circular opening of the side suspension bracket 11 and is coaxial with the circular opening. The rubber main spring 12 is vulcanized between the main spring core 13 and the circular opening.

[0033] like Figure 3 As shown, the inner core 13 of the main spring has a circular through hole in the center, through which the pre-embedded bolts 22 on the gearbox side suspension bracket 2 pass, facilitating installation.

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

[0035] like Figure 3 As shown, the main spring inner core 13 comprises two continuous sections: an upper section, a first inner core 131, and a lower section, a second inner core 132. The first inner core 131 is tapered, and the second inner core 132 is a hollow columnar structure. The inner sides of the first inner core 131 and the second inner core 132 are provided with the same circular through hole, which serves as a channel for the inner side of the main spring inner core to mate with the pre-embedded stud, and is used to mate with the pre-embedded bolt 22.

[0036] The outer diameter of the upper end of the first inner core 131 is larger than that of the lower end. Correspondingly, the rubber main spring rib 121 is conical, with a large upper opening and a small lower opening in its inner through hole, so that the rubber main spring rib 121 can fit into the position of the first inner core 131. The outer diameter of the upper end of its main structure is smaller than that of the lower end. The purpose of the conical angle design 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 to the direction of the rubber main spring rib 121 through the conical surface.

[0037] An upper rubber limiting block 122 extends upward from the outer periphery of the rubber main spring rib 121, and an outer peripheral rubber limiting block 123 extends downward. The lower end of the outer peripheral rubber limiting block 123 is set as a bottom rubber limiting block 124. An inner peripheral rubber limiting block 125 extends downward from the inner periphery of the rubber main spring rib 121. The inner peripheral rubber limiting block 125 has a hollow columnar structure, and its lower end is lower than the bottom rubber limiting block 124. An annular space is formed between the bottom rubber limiting block 124 and the inner peripheral rubber limiting block 125 for installing the intermediate limiter 15. In this embodiment, all limiting block structures of the rubber main spring 12 are arranged in annular shape.

[0038] Optionally, the top end of the first inner core 131 of the main spring inner core 13 is provided with an annular step structure, and the upper limit plate 14 is engaged with the annular step structure at the top end of the first inner core 131 by an interference fit. When the gearbox or motor 5 moves downward, the upper limit plate 14 contacts the upper rubber limit block 122, which plays a role in buffering and limiting.

[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. Its inner bottom end is connected to the inner core 13 near the lower end by an interference fit. The top surface of its inner bottom end also contacts the lower end of the inner circumferential rubber limiter block 125. At the same time, the main body of the intermediate limiter 15 is located outside the inner circumferential rubber limiter block 125, which is located on the periphery of the second inner core 132.

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

[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 an interference fit, and the top of the lower limit plate 16 also contacts the bottom surface of the intermediate limiter 15.

[0042] When the gearbox or motor 5 moves upward, the lower limit plate 16 contacts the bottom rubber limit block 124, which serves as a buffer and limit.

[0043] like Figure 1 and Figure 6 As shown, the gearbox side suspension bracket 2 includes a gearbox side suspension bracket body 21. The gearbox side suspension bracket body 21 has pre-embedded studs 22 and multiple through holes 23. The gearbox side suspension bracket body 21 is fixed to the gearbox or motor 5 through the through holes 23 and fasteners. Figure 8 As shown.

[0044] like Figure 1 As shown, the gearbox side suspension bracket body 21 passes through the main spring core 13 through the pre-embedded stud 22. The pre-embedded stud 22 extends above the upper limit plate 14 and is connected by the connecting nut 3 to achieve the connection between the hanging type suspension pad assembly 1 and the gearbox side suspension bracket 2.

[0045] This example utilizes a circular rubber main spring structure to improve the horizontal stiffness of the rubber. The installation of the gearbox-side suspension bracket and the vehicle-side suspension bracket is facilitated by pre-embedded studs.

[0046] This embodiment is highly versatile and adaptable to different transmissions; only the transmission side mount bracket needs to be changed.

[0047] Example 2 In a typical embodiment of the present invention, reference is made to Figures 1-9 As shown, a car is equipped with a suspension rubber mount as described in Embodiment 1. The car is a pure electric vehicle, a range-extended electric vehicle, or a fuel vehicle with a small engine displacement.

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

[0049] Raise the transmission or motor so that the pre-embedded stud 22 on the transmission side mount passes through the main spring core 13 to guide the installation between the transmission side mount and the vehicle side mount. The pre-embedded stud 22 and the main spring core 13 cooperate to achieve quick docking between the transmission side mount and the vehicle side mount. After the top of the pre-embedded stud extends to the position where it engages with the top of the upper limit plate at the top of the main spring core, tighten the connecting nut 3 to the specified torque to achieve fixation. Figures 7-9 As shown.

[0050] This embodiment employs a circular, suspended rubber mount, extending it above the gearbox or motor 5 via a vehicle side mount bracket 11. A circular rubber main spring 12 is used, and the mount is connected to the gearbox side mount bracket 2 via a pre-embedded stud 22. This design offers advantages such as simple structure, few parts, low cost, and easy installation. The annular rubber main spring 12 structure improves the horizontal stiffness of the rubber. This invention has high versatility, adapting to different gearboxes; only the gearbox side mount bracket 2 needs to be modified.

[0051] 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 hanging rubber suspension, characterized in that, include: The suspended soft pad assembly includes a vehicle side suspension bracket with a circular opening on its top surface for coaxially mounting the inner core of the main spring. A rubber main spring is vulcanized between the inner core of the main spring and the circular opening. One side of the vehicle side suspension bracket extends horizontally outward to form a first fixing plate and also extends vertically downward to form a second fixing plate. The vehicle side suspension bracket is fixed to the side of the vehicle longitudinal beam near the gearbox or motor through the fixing plates. The main spring inner core comprises two continuous sections, namely the upper section first inner core and the lower section second inner core. The first inner core is set in an inverted cone shape, and the second inner core has a columnar structure. The inner side of the main spring inner core is provided with a channel that mates with the pre-embedded stud. The rubber main spring includes a rubber main spring rib vulcanized between the periphery 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 in its inner through hole. The outer diameter of the upper end of its main structure is smaller than the outer diameter of the lower end. The outer periphery of the rubber main spring extends downward to form an outer circumferential rubber limiting block, and the lower end of the outer circumferential rubber limiting block is set as a bottom rubber limiting block; the inner periphery of the rubber main spring extends downward to form an inner circumferential rubber limiting block, and the lower end of the inner circumferential rubber limiting block is lower than the bottom rubber limiting block. The inner circumferential rubber limiting block is fitted to the second inner core periphery. An annular space is formed between the bottom rubber limiting block and the inner circumferential rubber limiting block for installing the intermediate limiting device. The intermediate limiting device is sleeved on the periphery of the inner circumferential rubber limiting block and is also snapped into the inner core of the main spring near the lower end. When the gearbox or motor moves in the horizontal direction, the intermediate limiting device can contact the outer circumferential rubber limiting block. The gearbox side suspension bracket is used to fix it to the gearbox or motor. It has a pre-embedded stud on the top, which passes through the inner core of the main spring to realize the installation guide between the gearbox side suspension bracket and the vehicle body side suspension bracket.

2. The suspended rubber suspension according to claim 1, characterized in that, The fixing plate includes several fixing blocks, and the fixing blocks are provided with through holes; one set of through holes on the first fixing plate is open to absorb tolerances; the fixing blocks on the second fixing plate are arranged in a figure-eight shape relative to the side suspension bracket of the vehicle body; the first fixing plate and the second fixing plate are arranged in an L-shape on one side of the side suspension bracket of the vehicle body.

3. The suspended rubber suspension according to claim 1, characterized in that, The top of the main spring core is engaged with the upper limit plate, and the outer periphery of the rubber main spring tendon extends upward to form an upper rubber limit block. When the gearbox or motor moves downward, the upper limit plate contacts the upper rubber limit block.

4. A hanging rubber suspension according to claim 1, characterized in that, The bottom end of the main spring core is engaged with the lower limit plate, and the top of the lower limit plate is 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.

5. A car, characterized in that, The automobile is equipped with a suspended rubber mount as described in any one of claims 1-4.

6. A method for installing a suspended rubber suspension device, characterized in that, The gearbox side suspension bracket is fixed to the gearbox or motor, and the body side suspension bracket is fixed to the side of the body longitudinal beam near the gearbox or motor via a fixing plate to suspend the body side suspension bracket; the gearbox or motor is raised so that the pre-embedded stud on the gearbox side suspension bracket passes through the inner core of the main spring to achieve installation guidance between the gearbox side suspension bracket and the body side suspension bracket. After the top of the pre-embedded stud extends to the position of the upper limit plate that is engaged with the top of the inner core of the main spring, the connecting nut is installed to fix it, thus obtaining the suspended rubber suspension as described in any one of claims 1-4.

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