CN221610468U - Buffer device, upper support assembly, shock absorber assembly and vehicle - Google Patents

Abstract

The application provides a buffer device, an upper support assembly, a shock absorber assembly and a vehicle, and relates to the technical field of vehicles, wherein the buffer device comprises: a shock absorber including a shock absorber tube and a piston rod disposed within the shock absorber tube, the piston rod configured to move relative to the shock absorber tube; the buffer block is sleeved on the piston rod; the elastic piece is sleeved on the piston rod and is positioned between the shock absorber cylinder and the buffer block. Based on this scheme, through establishing ties the elastic component between buffer block and the shock absorber section of thick bamboo in buffer, can reduce the contact rigidity between buffer block and the shock absorber section of thick bamboo component, and then promote the soft sense of contact, promote the buffering effect to promote user's driving travelling comfort.

Description

Buffer device, upper support assembly, shock absorber assembly and vehicle

Technical Field

The present application relates to the technical field of vehicles, and more particularly, to a buffer device, an upper support assembly, a shock absorber assembly and a vehicle.

Background Art

Shock absorbers, buffer blocks and top mounts are important elastic components in the vehicle suspension system that attenuate vehicle vibration and impact, and the vehicle's shock absorber assembly usually includes these three devices. However, as vehicle technology gradually matures, vehicle users have higher and higher requirements for driving comfort. Therefore, how to further improve the buffering effect of the vehicle's shock absorber assembly is an urgent problem to be solved.

Utility Model Content

The present application provides a buffer device, an upper support assembly, a shock absorber assembly and a vehicle. By adding elastic elements between some components of the buffer device to increase the softness of contact between the some components, the buffer effect of the buffer device can be further improved.

In a first aspect, a buffer device is provided, which includes: a shock absorber, which includes a shock absorber cylinder and a piston rod, the piston rod is arranged in the shock absorber cylinder, and the piston rod is configured to move relatively along the shock absorber cylinder; a buffer block, which is sleeved on the piston rod; and an elastic member, which is sleeved on the piston rod and is located between the shock absorber cylinder and the buffer block.

For example, the shock absorber cylinder is also called an outer cylinder or a piston cylinder.

For example, the buffer block is located below the vehicle body. Further, an upper support mechanism is fixed below the vehicle body, and the upper end of the buffer block is fixed to the upper support mechanism.

For example, the buffer block may be fixed to the piston rod by an inner hole penetrating the buffer block and performing interference fit with the piston rod.

Based on the above technical solution, by connecting an elastic member in series between the buffer block and the shock absorber cylinder in the buffer device, the contact stiffness between the buffer block and the shock absorber cylinder element can be reduced, thereby improving the contact softness and the buffering effect, thereby improving the user's driving comfort.

In combination with the first aspect, in certain implementations of the first aspect, the elastic member is disposed on an upper end surface of the shock absorber cylinder.

In combination with the first aspect, in certain implementations of the first aspect, the elastic member includes at least one of the following elements: a polyurethane pad, a rubber pad, or a diaphragm spring.

For example, the elastic member may be a component formed by stacking a polyurethane pad, a rubber pad and a diaphragm spring; or the elastic member may be a component formed by stacking a plurality of polyurethane pads, a plurality of rubber pads or a plurality of diaphragm springs.

Based on the above technical solution, since polyurethane, rubber and springs all have strong deformation capabilities, they help to improve the cushioning effect.

In combination with the first aspect, in some implementations of the first aspect, the elastic member has a shape of any one of the following: cylindrical, annular, dumbbell, or bowl.

For example, when the elastic member is a diaphragm spring, the elastic member is preferably arranged on the upper end surface of the shock absorber cylinder. Furthermore, the top of the shock absorber cylinder is provided with an upper cover, and the upper cover is provided with a hole so that the piston rod can enter the interior of the shock absorber cylinder through the hole, so the elastic member can be directly arranged on the upper cover of the shock absorber cylinder.

In combination with the first aspect, in certain implementations of the first aspect, when the elastic member is dumbbell-shaped, the elastic member includes a first end, a second end and a connecting portion, wherein the first end and the second end are connected by the connecting portion, the cross-sectional area of the connecting portion is smaller than the cross-sectional areas of the first end and the second end, respectively, and the plane where the first end and the second end are located is perpendicular to the piston rod.

For example, the geometric parameters of the first end and the second end may be the same or different. For example, the cross-sectional area of the first end may be greater than the cross-sectional area of the second end, may be equal to the cross-sectional area of the second end, or may be smaller than the cross-sectional area of the second end, as long as the cross-sectional areas of the first end and the second end are greater than the cross-sectional area of the connecting portion.

Based on the above technical solution, since the two end areas of the dumbbell-shaped elastic part are larger and the material of the dumbbell-shaped elastic part is polyurethane or rubber, the dumbbell-shaped elastic part has a stronger deformation ability. The closer to the outer edges of the two ends, the stronger the deformation ability of the ends, which helps to absorb vibrations with large amplitude but high frequency, thereby further improving the buffering effect and improving the user's driving comfort.

In combination with the first aspect, in certain implementations of the first aspect, when the elastic member is a bowl-shaped diaphragm spring, the elastic member includes a spring net and a fixing ring, wherein the spring net presents a first circle in a naturally opened state, and the fixing ring presents a second circle, the radius of the first circle is greater than the radius of the second circle, and the fixing ring is fixed to the edge of the spring net to bulge the spring net toward the center of the first circle.

Based on the above technical solution, since the spring net of the diaphragm spring has a stronger deformation ability and based on the deformation characteristics of the spring, the diaphragm spring elastic part is more likely to absorb vibrations with large amplitude and high frequency, thereby further improving the buffering effect and improving the user's driving comfort.

In a second aspect, a buffer device is provided, which includes: a shock absorber, which includes a shock absorber cylinder and a piston rod, the piston rod is arranged in the shock absorber cylinder, and the piston rod is configured to move relatively along the shock absorber cylinder; an upper support mechanism, which includes an upper support inner core, a first fixing portion and a second fixing portion, wherein the upper support inner core is penetrated by one end of the piston rod, the upper support mechanism is fixed to one end of the piston rod by the first fixing portion, and the upper support mechanism is fixedly connected to the vehicle body by the second fixing portion; an elastic member, which is arranged on the upper end surface and/or lower end surface of the upper support inner core.

For example, the elastic member may be provided with a hole so that the piston rod passes through the elastic member and is fixedly connected to the first fixing portion.

Based on the above technical solution, by connecting the upper support mechanism in the buffer device in series with the elastic member, the contact stiffness between the upper support mechanism and other components is reduced, the vibration transmitted to the upper support mechanism is further absorbed, and the buffering effect is improved, thereby improving the user's driving comfort.

In combination with the second aspect, in certain implementations of the second aspect, the elastic member includes at least one of the following elements: a polyurethane pad, a rubber pad, or a diaphragm spring.

In combination with the second aspect, in some implementations of the second aspect, the shape of the elastic member is any one of the following: cylindrical, annular, dumbbell or bowl.

In combination with the second aspect, in certain implementations of the second aspect, when the elastic member is dumbbell-shaped, the elastic member includes a first end, a second end and a connecting portion, the first end and the second end are connected by the connecting portion, the cross-sectional area of the connecting portion is smaller than the cross-sectional areas of the first end and the second end, respectively, and the plane where the first end and the second end are located is perpendicular to the piston rod.

In combination with the second aspect, in certain implementations of the second aspect, when the elastic member is a bowl-shaped diaphragm spring, the elastic member includes a spring net and a fixing ring. The spring net presents a first circle in a naturally opened state, and the fixing ring presents a second circle. The radius of the first circle is greater than the radius of the second circle. The fixing ring is fixed to the edge of the spring net to bulge the spring net toward the center of the first circle.

According to a third aspect, a buffer device is provided, which includes: a shock absorber, which includes a shock absorber cylinder and a piston rod, the piston rod is arranged in the shock absorber cylinder, and the piston rod is configured to move relatively along the shock absorber cylinder; an upper support mechanism, which includes an upper support inner core, a first fixing portion and a second fixing portion, the upper support inner core is penetrated by one end of the piston rod, the upper support mechanism is fixed to one end of the piston rod by the first fixing portion, and the upper support mechanism is fixedly connected to the vehicle body by the second fixing portion; a buffer block, the buffer block is sleeved on the piston rod, and the buffer block is located below the upper support mechanism; a first elastic member, the first elastic member is arranged between the shock absorber cylinder and the buffer block; the second elastic member, the second elastic member is arranged on the upper end surface and/or lower end surface of the upper support inner core.

In a fourth aspect, an upper support assembly is provided, which includes: a shell; an upper support core, which is arranged in the inner cavity of the shell; an elastic member, which is arranged between the upper surface of the inner cavity of the shell and the upper end surface of the upper support core, and/or between the lower end surface of the upper support core and the lower surface of the inner cavity of the shell.

In a fifth aspect, a shock absorber assembly is provided, which includes a device in any possible implementation of the device design of the first aspect or the second aspect.

In a sixth aspect, a vehicle is provided, which includes a shock absorber cylinder and a piston rod, the piston rod is arranged in the shock absorber cylinder, and the piston rod is configured to move relatively along the shock absorber cylinder; an upper support mechanism, the upper support mechanism includes an upper support inner core, a first fixing portion and a second fixing portion, the upper support inner core is penetrated by one end of the piston rod, the upper support mechanism is fixed to one end of the piston rod by the first fixing portion, and the upper support mechanism is fixedly connected to the vehicle body by the second fixing portion; a buffer block, the buffer block is sleeved on the piston rod, and the buffer block is located below the upper support mechanism; a first elastic member, the first elastic member is arranged between the shock absorber cylinder and the buffer block; the second elastic member, the second elastic member is arranged on the upper end surface and/or lower end surface of the upper support inner core.

In combination with the sixth aspect, in certain implementations of the sixth aspect, the shock absorber assembly includes an upper supporting mechanism, and the shock absorber assembly is connected to the vehicle body via a second fixing portion of the upper supporting mechanism.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a shock absorber assembly 100 applied to a vehicle;

FIG2 is a schematic diagram of the buffering principle of a shock absorber and a buffer block;

FIG3 is a schematic diagram of the vibration reduction principle of a vibration absorber and an upper support assembly;

FIG. 4 is a schematic structural diagram of a buffer device 400 proposed in an embodiment of the present application;

FIG5 is a schematic diagram of a dumbbell-shaped elastic member 430 proposed in an embodiment of the present application;

FIG6 is a schematic diagram of a diaphragm spring applicable to an embodiment of the present application;

FIG. 7 is a schematic structural diagram of another buffer device 400 proposed in an embodiment of the present application;

FIG8 is a schematic structural diagram of another buffer device 400 proposed in an embodiment of the present application;

FIG. 9 is a schematic longitudinal section view of an upper support assembly 900 proposed in an embodiment of the present application;

FIG. 10 is a schematic diagram showing the effect of the buffer device 400 proposed in an embodiment of the present application.

DETAILED DESCRIPTION

The technical solution in this application will be described below in conjunction with the accompanying drawings.

It should be noted that, in the description of the embodiments of the present application, unless otherwise specified, “/” means or, for example, A/B can mean A or B; the “and/or” in this article is merely a way to describe the association relationship of associated objects, indicating that three relationships may exist, for example, A and/or B can mean: A exists alone, A and B exist at the same time, and B exists alone.

In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, in the description of the embodiments of the present application, "multiple" refers to two or more than two, "at least one" and "one or more" refer to one, two or more. The singular expressions "one", "a kind", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear indication to the contrary in the context.

References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.

In the description of the embodiments of the present application, the terms "upper", "lower", "left", "right", "inside", "outside", "vertical", "horizontal", etc. indicate orientations or positional relationships that are defined relative to the orientations or positions of the components schematically placed in the drawings. It should be understood that these directional terms are relative concepts. They are used for description and clarification relative to the drawings, rather than indicating or implying that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. It may change accordingly according to the change in the orientation of the components placed in the drawings, and therefore cannot be understood as a limitation on the present application. In addition, the "vertical" involved in the present application is not vertical in the strict sense, but is within the allowable error range. "Parallel" is not parallel in the strict sense, but is within the allowable error range.

In the embodiments of the present application, the same reference numerals are used to represent the same components or parts. For the same parts in the embodiments of the present application, only one of the parts or parts may be marked with a reference numeral in the figure. It should be understood that the reference numerals are also applicable to other identical parts or parts. In addition, the various parts in the drawings are not drawn to scale, and the sizes and dimensions of the parts shown in the drawings are only exemplary and should not be understood as limiting the present application.

The buffer device or shock absorber assembly provided in the present application can be applied to a mobile carrier, and the mobile carrier in the present application may include road vehicles, water vehicles, air vehicles, industrial equipment, agricultural equipment, or entertainment equipment, etc. For example, the mobile carrier may be a vehicle, which is a vehicle in a broad sense, and may be a vehicle (such as a commercial vehicle, a passenger car, a motorcycle, a flying car, a train, etc.), an industrial vehicle (such as a forklift, a trailer, a tractor, etc.), an engineering vehicle (such as an excavator, a bulldozer, a crane, etc.), agricultural equipment (such as a lawn mower, a harvester, etc.), amusement equipment, a toy vehicle, etc. The embodiment of the present application does not specifically limit the type of vehicle. For another example, the mobile carrier may be a vehicle such as an airplane or a ship.

For the convenience of description, the device proposed in the embodiment of the present application is described in detail below using a vehicle as an example.

FIG. 1 is a schematic structural diagram of a shock absorber assembly 100 applied to a vehicle.

The shock absorber assembly 100 applied to a vehicle generally includes a shock absorber 110 , a buffer block 120 and an upper supporting mechanism 130 .

The shock absorber 110 may be a shock absorber, which may include a shock absorber cylinder 111 and a shock absorber piston rod 112, and the shock absorber piston rod 112 may move in the shock absorber cylinder 111, wherein the shock absorber piston rod 112 may pass through the buffer block 120 and the upper support assembly 130, and be fixedly connected to the vehicle body. Based on the shock absorber, the vehicle suspension movement may be buffered.

In some possible embodiments, the shock absorber cylinder described in the embodiments of the present application is also called an outer cylinder or a piston cylinder.

The buffer block 120 is usually sleeved on the shock absorber piston rod 112 of the shock absorber 110. When the shock absorber assembly 100 does not include the upper support assembly 130, the buffer block 120 is usually fixed between the vehicle body and the shock absorber 110. In addition, the shock absorber assembly 100 also includes the upper support assembly 130. The buffer block 120 is usually arranged between the upper support assembly 130 and the shock absorber cylinder 111, for example, fixed to the lower end of the upper support assembly 130 by a fixing element. The buffer block 120 can limit the maximum deformation of the suspension to reduce the direct impact of the vehicle suspension on the vehicle body.

The upper support assembly 130 is fixed to the vehicle body by a fixing element. The upper support assembly 130 is based on an upper support mechanism with a special structure, which can eliminate unnecessary vibration and improve the vibration isolation effect, thereby effectively reducing most road excitations to prevent unnecessary chassis vibrations from reaching passengers.

FIG. 2 is a schematic diagram of the buffering principle of a shock absorber and a buffer block.

State 1: When the shock absorber 110 is not subjected to impact force, the shock absorber 110 is in a free state and is separated from the buffer block 120 . At this time, the buffer block 120 does not undergo elastic deformation.

State 2: When the impact force applied to the shock absorber 110 is within a certain threshold range, piston movement occurs between the shock absorber cylinder 111 and the shock absorber piston rod 112 in the shock absorber 110, but the movement amplitude is small, for example, at most it contacts the buffer block 120 and does not cause elastic deformation of the buffer block 120.

State 3: When the impact force on the shock absorber 110 exceeds a certain threshold range, piston movement occurs between the shock absorber cylinder 111 and the shock absorber piston rod 112 in the shock absorber 110, but the movement amplitude is large, so that the shock absorber cylinder 111 squeezes the buffer block 120, and accordingly, the buffer block 120 undergoes elastic deformation. It can be seen that due to the existence of the buffer block 120, the shock absorber cylinder 111 will not directly collide with the vehicle body, thereby playing a buffering role.

Fig. 3 is a schematic diagram of the vibration reduction principle of a shock absorber and an upper support assembly. For the convenience of description, the shock absorber assembly 100 in this example only includes a shock absorber 110 and an upper support assembly 130, and the upper support assembly 130 is fixed between the vehicle body and the shock absorber 110.

During the driving process of the vehicle, road excitation will be transmitted to the upper support assembly 130 through the shock absorber 110, and the upper support mechanism in the upper support assembly 130 will correspondingly absorb most of the vibrations generated based on the road excitation to further reduce the vibration of the vehicle.

However, when the shock absorber assembly 100 shown in FIG. 2 and FIG. 3 plays a buffering role, the softness of the contact between the shock absorber and the buffer block and the upper support is limited, and it is difficult to meet the current users' increasingly high requirements for comfort.

Based on this, the embodiments of the present application propose a variety of buffering devices, which connect elastic parts in series between elements used for buffering and vibration reduction to reduce the contact stiffness between the elements, thereby improving the softness of contact and the buffering effect, thereby improving the user's driving comfort.

FIG. 4 is a schematic structural diagram of a buffer device 400 proposed in an embodiment of the present application.

The buffer device 400 comprises:

A shock absorber 410, wherein the shock absorber 410 comprises a shock absorber cylinder 411 and a piston rod 412, wherein the piston rod 412 is disposed in the shock absorber cylinder 411, and the piston rod 412 is configured to move relatively along the shock absorber cylinder 411;

A buffer block 420, wherein the buffer block 420 is sleeved on the piston rod 412;

The elastic member 430 is sleeved on the piston rod 412 and is located between the shock absorber cylinder 411 and the buffer block 420 .

In some possible embodiments, the buffer block 420 is located below the vehicle body.

In some possible embodiments, the buffer block 420 may be fixed to the piston rod 412 by performing interference fit with the piston rod 412 through an inner hole penetrating the buffer block 420 .

In some possible embodiments, the elastic member 430 may be located at any position between the shock absorber cylinder 411 and the buffer block 420. The elastic member 430 may be directly disposed on the upper end surface of the shock absorber cylinder 411.

Based on the above technical solution, by connecting an elastic member in series between the buffer block and the shock absorber cylinder in the buffer device, the contact stiffness between the buffer block and the shock absorber cylinder element can be reduced, thereby improving the contact softness and the buffering effect, thereby improving the user's driving comfort.

In some possible embodiments, the elastic member 430 may include at least one of the following elements: a polyurethane pad, a rubber pad, or a diaphragm spring. For example, the elastic member 420 may be a polyurethane pad, a rubber pad, or a diaphragm spring; or, the elastic member 430 may be a component composed of a polyurethane pad, a rubber pad, and a diaphragm spring stacked together; or, the elastic member 430 may be a component composed of multiple polyurethane pads, multiple rubber pads, or multiple diaphragm springs stacked together.

In some possible embodiments, the shape of the elastic member 430 is any one of the following: cylindrical, annular, dumbbell or bowl-shaped; in addition, when the elastic member 430 is a diaphragm spring, the shape of the elastic member 430 is bowl-shaped; when the elastic member 430 is composed of two polyurethane pads, the shapes of the two polyurethane pads can be different, for example, one is cylindrical and the other is dumbbell-shaped.

FIG. 5 is a schematic diagram of a dumbbell-shaped elastic member 430 proposed in an embodiment of the present application.

In some possible embodiments, when the elastic member 430 is dumbbell-shaped, the elastic member 430 includes a first end 431, a second end 432 and a connecting portion 433, the first end 431 and the second end 432 are connected by the connecting portion 433, the cross-sectional area of the connecting portion 433 is smaller than the cross-sectional area of the first end 431 and the second end 432, respectively, and the plane where the first end 431 and the second end 432 are located is perpendicular to the piston rod 412.

In some possible embodiments, the geometric parameters of the first end 431 and the second end 432 may be the same or different. For example, the cross-sectional area of the first end 431 may be greater than the cross-sectional area of the second end 432, may be equal to the cross-sectional area of the second end 432, or may be smaller than the cross-sectional area of the second end 432, as long as the cross-sectional areas of the first end 431 and the second end 432 are greater than the cross-sectional area of the connecting portion 433.

Based on the above technical solution, since the two end areas of the dumbbell-shaped elastic part are larger and the material of the dumbbell-shaped elastic part is polyurethane or rubber, the dumbbell-shaped elastic part has a stronger deformation ability. The closer to the outer edges of the two ends, the stronger the deformation ability of the ends, which helps to absorb vibrations with large amplitude but high frequency, thereby further improving the buffering effect and improving the user's driving comfort.

FIG. 6 is a schematic diagram of a diaphragm spring applicable to an embodiment of the present application.

In some possible embodiments, when the elastic member 430 is a bowl-shaped diaphragm spring, the elastic member 430 includes a spring net 434 and a fixing ring 435. The spring net 434 presents a first circle in a naturally opened state, and the fixing ring 435 presents a second circle. The radius of the first circle is greater than the radius of the second circle. The fixing ring 435 is fixed to the edge of the spring net 434 to bulge the spring net 434 toward the center of the first circle.

Based on the above technical solution, since the spring net of the diaphragm spring has a stronger deformation ability and based on the deformation characteristics of the spring, the diaphragm spring elastic part is more likely to absorb vibrations with large amplitude and high frequency, thereby further improving the buffering effect and improving the user's driving comfort.

In some possible embodiments, when the elastic member 430 is a diaphragm spring, the elastic member 430 is preferably disposed on the upper end surface of the shock absorber cylinder 411. For example, an upper cover is disposed on the top of the shock absorber cylinder 411, and the upper cover is provided with a hole so that the piston rod 412 can enter the interior of the shock absorber cylinder 411 through the hole, so the elastic member 430 can be directly disposed on the upper cover of the shock absorber cylinder 411.

FIG. 7 is a schematic structural diagram of another buffer device 400 proposed in an embodiment of the present application.

The buffer device 400 comprises:

A shock absorber 410, wherein the shock absorber 410 comprises a shock absorber cylinder 411 and a piston rod 412, wherein the piston rod 412 is disposed in the shock absorber cylinder 411, and the piston rod 412 is configured to move relatively along the shock absorber cylinder 411;

The upper support mechanism 440 includes an upper support inner core 441, a first fixing portion 442, and a second fixing portion 443, wherein the upper support inner core 441 is penetrated by one end of the piston rod 412, the upper support mechanism 440 is fixed to one end of the piston rod 412 through the first fixing portion 442, and the upper support mechanism 440 is fixedly connected to the vehicle body through the second fixing portion 443;

The elastic member 430 is disposed on the upper end surface and/or the lower end surface of the upper supporting inner core 441 .

In some possible embodiments, the elastic member 430 may be provided with a hole, so that the piston rod 412 passes through the elastic member 430 and is fixedly connected to the first fixing portion 442 .

It should be understood that the material and composition of the elastic member 430 included in the buffer device 400 shown in FIG. 7 are the same as the material and composition of the elastic member 430 included in the buffer device 400 shown in FIG. 4 described above.

Based on the above technical solution, by connecting the upper support mechanism in the buffer device in series with the elastic member, the contact stiffness between the upper support mechanism and other components is reduced, the vibration transmitted to the upper support mechanism is further absorbed, and the buffering effect is improved, thereby improving the user's driving comfort.

In addition, an embodiment of the present application also proposes an upper support assembly.

FIG. 8 is a schematic structural diagram of another buffer device 400 proposed in an embodiment of the present application.

The buffer device 400 comprises:

A shock absorber 410, wherein the shock absorber 410 includes a shock absorber cylinder 411 and a piston rod 412, wherein the piston rod 412 is disposed in the shock absorber cylinder 411, and the piston rod 412 is configured to move relatively along the shock absorber cylinder 411;

The upper support mechanism 440 includes an upper support inner core 441, a first fixing portion 442, and a second fixing portion 443, wherein the upper support inner core 441 is penetrated by one end of the piston rod 412, the upper support mechanism 440 is fixed to one end of the piston rod 412 through the first fixing portion 442, and the upper support mechanism 440 is fixedly connected to the vehicle body through the second fixing portion 443;

A buffer block 420, which is sleeved on the piston rod 412 and is located below the upper support mechanism 440;

A first elastic member 4301, wherein the first elastic member 4301 is disposed between the shock absorber cylinder 411 and the buffer block 420;

The second elastic member 4302 is disposed on the upper end surface and/or the lower end surface of the upper support inner core 441 .

In some possible embodiments, the first elastic member 4301 may be provided with a hole, so that the piston rod 412 passes through the first elastic member 4301 and is fixedly connected to the first fixing portion 442 .

In addition, the buffer block 420 can be fixed below the upper support mechanism 440 by interference fit with the piston rod 412 through the above-mentioned inner hole, for example, so that the upper end surface of the buffer block 420 contacts the lower end surface of the shell of the upper support mechanism 440, or the buffer block 420 can also be directly fixed to the lower end surface of the shell of the upper support mechanism 440, so that the buffer block 420 can be fixed in position without interference fit with the piston rod 412 through the inner hole.

In some possible embodiments, the first elastic member 4301 may also be directly disposed on the upper end surface of the shock absorber cylinder 411. In particular, when the first elastic member 4301 is a diaphragm spring, the elastic member 4301 is more suitable for being disposed on the upper end surface of the shock absorber cylinder 411.

It should be understood that the material and composition of the first elastic member 4301 and the second elastic member 4302 included in the buffer device 400 shown in FIG. 6 are the same as the material and composition of the elastic member 430 included in the buffer device 400 shown in FIG. 4 or FIG. 5 .

In some possible embodiments, the fixing method between the elements described in the embodiments of the present application may be a fixed connection through a fixing part, and the fixing part may be a part such as a bolt or a nut that plays a fixing role; in addition, the fixing method may also directly fix the elements by welding, bonding, etc.

Based on the above technical solution, by connecting an elastic member in series between the buffer block and the shock absorber cylinder in the buffer device, the contact stiffness between the buffer block and the shock absorber cylinder elements can be reduced, thereby improving the softness of contact, and by connecting the upper support mechanism in series with the elastic member, the contact stiffness between the upper support mechanism and other elements is reduced, further absorbing the vibration transmitted to the upper support mechanism, improving the buffering effect, and thereby improving the user's driving comfort.

FIG. 9 is a schematic longitudinal section of an upper support assembly 900 proposed in an embodiment of the present application.

The upper support assembly 900 includes:

Housing 910;

In some possible embodiments, the elastic member 430 may be provided with a hole, so that the piston rod 412 passes through the elastic member 430 and is fixedly connected to the first fixing portion 442 .

The elastic member 430 is disposed on the upper end surface and/or the lower end surface of the upper supporting inner core 441 .

In some possible embodiments, the housing 910 includes an upper housing 911 and a lower housing 912 . The upper housing 911 and the lower housing 912 may be fastened to each other by bolts and fixed to the vehicle body by bolts.

In some possible embodiments, the lower shell 912 further has an inner hole for receiving the piston rod 412 , so that one end of the piston rod 412 can be inserted into the upper support mechanism 440 and fixed inside the upper support mechanism 440 .

It should be understood that the material and composition of the elastic member 430 included in the upper support assembly 900 shown in FIG. 9 are the same as the material and composition of the elastic member 430 included in the buffer device 400 shown in FIG. 4 , FIG. 7 or FIG. 8 described above.

Based on the above technical solution, by connecting the upper support mechanism in series with the elastic member, the contact stiffness between the upper support mechanism and other components is reduced, the vibration transmitted to the upper support mechanism is further absorbed, and the buffering effect is improved, thereby improving the user's driving comfort.

FIG. 10 is a schematic diagram showing the effect of the buffer device 400 proposed in an embodiment of the present application.

Referring to FIG. 10 , in this example, an elastic member 430 is provided below the buffer block 420 or at the upper support mechanism 440. Assuming that the initial stiffness of the buffer block 420 or the upper support mechanism 440 is K1 and the stiffness of the elastic member 430 is K2, then, based on the basic formula for calculating stiffness, the overall stiffness of the buffer device 400 after adding the elastic member 430 can be determined by the following formula (1):

Among them, F is the force applied to the buffer block 420 or the upper support mechanism 440 with the added elastic part 430, and L is the deformation displacement of the force-bearing element structure. It can be seen that K3 is less than K1, so the contact stiffness between the elements is reduced, and the contact softness between the elements is improved, so as to further improve the user's driving comfort.

In some possible embodiments, the present application also proposes a buffer assembly, including the buffer device 400 or the upper support assembly 900 described in any of the above embodiments.

In some possible embodiments, the present application also provides a vehicle, including the buffer assembly described in any of the above embodiments. Based on the above embodiments, it can be seen that the shock absorber assembly includes an upper support mechanism, and the shock absorber assembly is connected to the vehicle body through the fixing portion of the upper support mechanism.

The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (11)

1. A buffer device, comprising: A shock absorber, the shock absorber comprising a shock absorber cylinder and a piston rod, the piston rod being disposed in the shock absorber cylinder, the piston rod being configured to move relatively along the shock absorber cylinder; A buffer block, the buffer block is sleeved on the piston rod; An elastic member, wherein the elastic member is sleeved on the piston rod and the elastic member is located between the shock absorber cylinder and the buffer block. When the elastic member is a dumbbell-shaped polyurethane pad or a rubber pad, the elastic member includes a first end, a second end and a connecting portion. The first end and the second end are connected by the connecting portion. The cross-sectional area of the connecting portion is respectively smaller than the cross-sectional area of the first end and the second end. The plane where the first end and the second end are located is perpendicular to the piston rod. Alternatively, when the elastic member is a bowl-shaped diaphragm spring, the elastic member includes a spring net and a fixing ring. The spring net presents a first circle in a naturally opened state, and the fixing ring presents a second circle. The radius of the first circle is greater than the radius of the second circle. The fixing ring is fixed to the edge of the spring net to bulge the spring net toward the center of the first circle. 2 . The buffer device according to claim 1 , wherein the elastic member is arranged on the upper end surface of the shock absorber cylinder. 3. A buffer device, characterized in that it comprises: A shock absorber, the shock absorber comprising a shock absorber cylinder and a piston rod, the piston rod being disposed in the shock absorber cylinder, the piston rod being configured to move relatively along the shock absorber cylinder; An upper support mechanism, the upper support mechanism comprising an upper support inner core, a first fixing portion and a second fixing portion, the upper support inner core being penetrated by one end of the piston rod, the upper support mechanism being fixed to one end of the piston rod via the first fixing portion, and the upper support mechanism being fixedly connected to the vehicle body via the second fixing portion; An elastic member is arranged on the upper end surface and/or the lower end surface of the upper support inner core. 4 . The buffer device according to claim 3 , characterized in that the elastic member comprises at least one of the following elements: a polyurethane pad, a rubber pad or a diaphragm spring. 5. The buffer device according to claim 3 or 4, characterized in that the shape of the elastic member is any one of the following: cylindrical, annular, dumbbell or bowl-shaped. 6. The buffer device according to claim 5 is characterized in that, when the elastic member is dumbbell-shaped, the elastic member includes a first end, a second end and a connecting portion, the first end and the second end are connected by the connecting portion, the cross-sectional area of the connecting portion is smaller than the cross-sectional areas of the first end and the second end, respectively, and the plane where the first end and the second end are located is perpendicular to the piston rod. 7. The buffer device according to claim 5 is characterized in that, when the elastic member is a bowl-shaped diaphragm spring, the elastic member includes a spring net and a fixing ring, the spring net presents a first circle in a naturally opened state, the fixing ring presents a second circle, the radius of the first circle is greater than the radius of the second circle, and the fixing ring is fixed to the edge of the spring net to bulge the spring net toward the center of the first circle. 8. A buffer device, comprising: A shock absorber, the shock absorber comprising a shock absorber cylinder and a piston rod, the piston rod being disposed in the shock absorber cylinder, the piston rod being configured to move relatively along the shock absorber cylinder; An upper support mechanism, the upper support mechanism comprising an upper support inner core, a first fixing portion and a second fixing portion, the upper support inner core being penetrated by one end of the piston rod, the upper support mechanism being fixed to one end of the piston rod via the first fixing portion, and the upper support mechanism being fixedly connected to the vehicle body via the second fixing portion; A buffer block, the buffer block is sleeved on the piston rod and is located below the upper supporting mechanism; a first elastic member, the first elastic member being disposed between the shock absorber cylinder and the buffer block; A second elastic member, wherein the second elastic member is arranged on the upper end surface and/or the lower end surface of the upper support inner core. 9. An upper support assembly, characterized by comprising: case; An upper support inner core, wherein the upper support inner core is disposed in the inner cavity of the shell; An elastic member is arranged between the upper surface of the inner cavity of the shell and the upper end surface of the upper support inner core, and/or between the lower end surface of the upper support inner core and the lower surface of the inner cavity of the shell. 10. A shock absorber assembly, characterized by comprising the buffer device according to any one of claims 1 to 8. 11. A vehicle, comprising: a damper cylinder and a piston rod, wherein the piston rod is disposed in the damper cylinder and the piston rod is configured to move relatively along the damper cylinder; An upper support mechanism, the upper support mechanism comprising an upper support inner core, a first fixing portion and a second fixing portion, the upper support inner core being penetrated by one end of the piston rod, the upper support mechanism being fixed to one end of the piston rod via the first fixing portion, and the upper support mechanism being fixedly connected to the vehicle body via the second fixing portion; A buffer block, the buffer block is sleeved on the piston rod and is located below the upper supporting mechanism; a first elastic member, the first elastic member being disposed between the shock absorber cylinder and the buffer block; A second elastic member, wherein the second elastic member is arranged on the upper end surface and/or the lower end surface of the upper support inner core.