Vehicle suspension

Abstract

A vehicle suspension includes: an inner tube joined to a vehicle-mounted device, an insulating member molded integrally with an outer diameter portion of the inner tube, the insulating member including a stacked structure formed therein and configured such that a plurality of chambers are vertically spaced apart from each other, a flow path plate disposed in the stacked structure, and an outer tube coupled to the inner tube, and a flow path plate formed to provide a flow path configured such that a fluid is movable between the chambers in a state of being joined to an outer peripheral surface of the insulating member and sealing the chambers including the stacked structure, an outer tube is joined to the insulation member and the flow path plate and is configured to surround the insulation member and the flow path plate, and is joined to a vehicle body side. It is an object of the present invention to provide a vehicle suspension including an improved air damping suspension structure configured to increase a damping effect.

Description

Technical Field

[0001] The present invention relates to a vehicle suspension, and more particularly to a vehicle suspension capable of mounting a vehicle-mounted device on a vehicle body in a vibration-isolating manner. Background Art

[0002] Generally, when power system equipment including an engine and a transmission is mounted in an engine compartment of an internal combustion engine vehicle, a mount is used for mounting in order to reduce vibration and noise transmitted from the power system equipment to a vehicle body.

[0003] For example, when the engine is driven, the engine mount plays a role in isolating vibration generated between the vehicle body and the engine mount by the stroke of the piston and the rotation torque of the crankshaft.

[0004] In this regard, while internal combustion engine vehicles have an engine installed therein, electric vehicles employ a power electronic (PE) system including a motor and a reducer. Therefore, when the motor and the reducer are mounted on the vehicle body side in the PE chamber, they are mounted using a mount dedicated to electric vehicles that can isolate gear whine noise, impact, jerk, vibration, etc.

[0005] Figure 1 The present invention is a perspective view showing a bushing type mount used in an electric vehicle, and shows a PE mount configured to mount a vehicle-mounted device such as a motor or a speed reducer forming a PE system.

[0006] The PE suspension 1 includes: an inner tube 2, a rubber 3 and an outer tube 4, wherein the inner tube (also called "inner core") 2 is joined to a vehicle-mounted device (such as a motor or a reducer forming a PE system), the rubber (also called "insulating component") 3 is vulcanized and molded into a predetermined shape and is arranged on the outer diameter portion of the inner tube 2, and the outer tube 4 is integrally joined to the outer surface of the rubber 3.

[0007] In the above-mentioned PE-suspended components, the rubber 3 is used to isolate the vibration transmitted from the motor and the reducer through the inner tube 2 , thereby preventing the vibration from being transmitted to the outer tube 4 .

[0008] During installation, the outer tube 4 of the PE suspension 1 is press-fitted into the mounting hole of the bracket as the body side. The bracket may be a structure separately provided on the body side, such as a subframe having a motor and a reducer mounted thereon, or may be an integrally formed body side.

[0009] In addition, when installing the motor, with the engaging hole of the motor case aligned with the shaft insertion hole (internal space of the inner tube) 2a of the suspension 1, a bolt is inserted through the inner tube 2 and the end of the bolt is screwed into the engaging hole of the motor case.

[0010] Therefore, in a state where the motor and reducer of the electric vehicle are mounted on the vehicle body side (eg, subframe 5) via the suspension 1, the suspension 1 isolates noise and vibration generated from the motor and reducer and prevents the noise and vibration from being transmitted to the vehicle body side.

[0011] At the same time, since the weight of the motor and reducer forming the PE system of an electric vehicle is less than the weight of the engine (internal combustion engine), electric vehicles generally use traditional rubber-type suspensions as the suspensions of the PE system (hereinafter referred to as "PE suspensions") instead of hydraulic-type suspensions.

[0012] The electric vehicle has a PE system including a motor and a reducer, which weighs less than that of an internal combustion engine vehicle, and the PE system can be installed on both the front and rear sides of the electric vehicle.

[0013] Therefore, in the case of the front side of the electric vehicle, there is an advantage in that the weight is lighter than that of the existing internal combustion engine vehicle. On the other hand, since the motor and the reducer are additionally provided on the rear side of the electric vehicle, the weight of the rear side is significantly heavier than that of a conventional vehicle equipped with only a differential gear, which results in reduced driving vibration, aftershock, and handling performance.

[0014] In addition, the weight of vehicle-mounted devices such as a motor and a speed reducer forming the PE system is much heavier than that of a differential gear, and the rear subframe of an electric vehicle has a double spring type fixed with a bushing structure, which results in a significant reduction in performance.

[0015] Therefore, efforts have been made to improve the rear PE suspension used on the rear side of the vehicle. However, since the conventional bushing type has a small pumping area, there are disadvantages in that the shock absorbing size is not large and the dynamic characteristics are high. The conventional air shock absorbing suspension structure has a very small shock absorbing value, so it is necessary to provide an improved structure that can increase the shock absorbing value.

[0016] The information included in this Background of the Invention section is only intended to enhance understanding of the overall background of the invention and should not be taken as an acknowledgment or any form of suggestion that this information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0017] Various aspects of the present invention are directed to providing a vehicle suspension including an improved air shock mount structure configured to increase shock absorbing effect.

[0018] The objects of the present invention are not limited to the above objects, and those skilled in the art to which the exemplary embodiments of the present invention belong (hereinafter referred to as “those skilled in the art”) will clearly understand other technical objects not mentioned herein from the detailed description of the embodiments.

[0019] Various aspects of the present invention are directed to a vehicle suspension comprising: an inner tube, an insulating member, a flow path plate, and an outer tube, wherein the inner tube is joined to a vehicle-mounted device, the insulating member is molded to be integral with an outer diameter portion of the inner tube, the insulating member includes a stacking structure formed therein and configured such that a plurality of chambers filled with a fluid are vertically spaced apart from each other, the flow path plate is formed to provide a flow path in a state of being joined to an outer peripheral surface of the insulating member and sealing the chambers including the stacking structure, the flow path being configured such that the fluid is movable between the chambers, and the outer tube is joined to the insulating member and the flow path plate and configured to surround the insulating member and the flow path plate, and joined to a vehicle body side.

[0020] Other aspects and exemplary embodiments of the invention are discussed below.

[0021] It should be understood that the term "vehicle" or "vehicular" or other similar terms used herein generally include motor vehicles, such as passenger vehicles including sport utility vehicles (SUVs), buses, trucks, various commercial vehicles, ships including various boats, marine vessels, aircraft, etc., and include hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen-powered vehicles, and other alternative fuel vehicles (e.g., fuel derived from energy sources other than gasoline). As referred to herein, a hybrid vehicle is a vehicle having two or more sources of power, such as both gasoline-powered and electric-powered vehicles.

[0022] The above features and other features of the present invention are discussed below.

[0023] By incorporating the accompanying drawings and Figure 1 Other features and advantages of the methods and apparatus of the present invention will become more clearly apparent or elucidated with reference to specific embodiments which illustrate certain principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 1 is a schematic diagram showing a conventional suspension;

[0025] Figure 2 is a perspective view showing an assembled suspension according to various exemplary embodiments of the present invention;

[0026] Figure 3 An exploded perspective view showing a configuration of a suspension according to an exemplary embodiment of the present invention;

[0027] Figure 4 For along Figure 2 A cross-sectional view obtained along line "AA" in FIG.

[0028] Figure 5A perspective view showing a flow path plate for an air shock-absorbing mount according to an exemplary embodiment of the present invention;

[0029] Figure 6 is a perspective view showing an inner tube and a fork-shaped portion in a suspension according to an exemplary embodiment of the present invention;

[0030] Figure 7 A schematic diagram showing a suspension without a fork-shaped portion on an inner tube as an exemplary embodiment of the present invention;

[0031] Figure 8 A perspective view showing a state in which an insulating member in a suspension according to an exemplary embodiment of the present invention is coupled to an inner tube and a fork-shaped portion;

[0032] Fig. 9 is a perspective view showing a state in which a flow path plate in suspension is joined to an outer peripheral surface of an insulating member according to an exemplary embodiment of the present invention;

[0033] Fig.10 A perspective view showing a flow path plate for a hydraulic mount according to an exemplary embodiment of the present invention;

[0034] Fig.11 , Fig.12 as well as Fig.13 is a schematic diagram showing an operating state of a suspension according to an exemplary embodiment of the present invention; and

[0035] Fig.14 , Fig.15 as well as Fig.16 is a schematic diagram illustrating a manufacturing process of a suspension according to an exemplary embodiment of the present invention.

[0036] It should be understood that the accompanying drawings are not necessarily drawn to scale, but rather show a slightly simplified depiction of various exemplary features that illustrate the basic principles of the invention. The specific design features of the present invention as included herein (including, for example, specific dimensions, orientations, locations, and shapes) will be determined in part by the specific target application and use environment.

[0037] In the figures, like reference numbers refer to the same or equivalent parts of the present invention throughout the several figures of the drawing. DETAILED DESCRIPTION

[0038] Hereinafter, various exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. The specific structure or function description carried out in conjunction with the embodiments of the present invention is merely illustrative, and is used to describe the embodiments according to the concepts of the present invention, and the embodiments according to the concepts of the present invention can be realized in various forms. In addition, it will be understood that this specification is not intended to limit the present invention to the embodiments. On the other hand, the present invention is intended to not only cover these embodiments, but also to include various replacements, modifications, equivalents and other embodiments within the spirit and scope of the present invention as defined by the appended claims.

[0039] Meanwhile, in the exemplary embodiments of the present invention, terms such as "first" and / or "second" may be used to describe various components, but these components are not limited by these terms. These terms are only used to distinguish one component from other components. For example, without departing from the scope of rights of the concept according to the present invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

[0040] When a component is referred to as being "connected" or "coupled" to another component, the component may be directly connected or coupled to the other component, but it should be understood that other components may exist in between. On the other hand, when a component is referred to as being "directly connected" or "directly in contact with" another component, it should be understood that no other components exist in between. Other expressions used to describe the relationship between components, namely, "between" and "directly between" or "adjacent" and "directly adjacent", should be interpreted in the same manner.

[0041] Throughout the specification, the same reference numerals represent the same components. In addition, the terms in the specification are only used to describe the embodiments and are not intended to limit the present invention. In this specification, the expression of the singular form also includes the plural form, unless otherwise clearly specified in the context. As used herein, expressions such as "including" and / or "including" do not exclude the existence or addition of one or more components, steps, operations and / or elements other than the described components, steps, operations and / or elements.

[0042] Various embodiments of the present invention relate to vehicle suspensions, and more particularly, to bushing-type suspensions configured for electric vehicles. In detail, the suspension according to an exemplary embodiment of the present invention may be a PE suspension configured to mount a PE system including a motor and a reducer on a vehicle body side (e.g., a subframe) in an electric vehicle.

[0043] The suspension according to the exemplary embodiment of the present invention may be a motor suspension configured to mount a motor on a vehicle body side, the motor being a vehicle driving source in an electric vehicle. Here, the vehicle body side may be a bracket of a subframe, that is, a bracket provided on or integrally formed with a subframe of a vehicle body.

[0044] Furthermore, the vehicle suspension according to the exemplary embodiment of the present invention is a suspension including an improved structure configured for increasing a shock absorbing effect, and as a main technical feature, the suspension includes a stacked multi-chamber air shock absorbing suspension structure.

[0045] In an exemplary embodiment of the present invention, the air damping exhibits a damping action and a damping effect while the air enters and leaves the chamber. In addition, instead of an air damping suspension structure, the vehicle suspension according to an exemplary embodiment of the present invention may be configured as a hydraulic suspension configured to exhibit a damping action and a damping effect while the liquid fluid enters and leaves the chamber to be filled in or discharged from the chamber. That is, the present invention may be configured as a stacked multi-chamber air damping suspension or a stacked multi-chamber hydraulic suspension.

[0046] Figure 2 is a perspective view showing an assembled suspension according to various exemplary embodiments of the present invention, Figure 3 is an exploded perspective view showing a configuration of a suspension according to an exemplary embodiment of the present invention, Figure 4 For along Figure 2 A cross-sectional view taken along line “AA” in FIG.

[0047] Figure 4 The cross-sectional shape of the assembled suspension taken along the transverse direction perpendicular to the axial direction is shown. In this specification, the "axial direction" of the suspension is defined as a direction parallel to the central axis of the shaft insertion hole in the inner tube 110.

[0048] Figure 5 is a perspective view showing a flow path plate for an air shock mount according to an exemplary embodiment of the present invention, Figure 6 is a perspective view showing an inner tube and a fork-shaped portion in a suspension according to an exemplary embodiment of the present invention.

[0049] like Figure 3As shown, the vehicle suspension 100 according to the exemplary embodiment of the present invention includes: an inner tube 110, an insulating member 130, an outer tube 170, and flow path plates 151 and 161, wherein the inner tube 110 is coupled to a vehicle-mounted device (e.g., a motor or a reducer forming a PE system), the insulating member 130 is integrally fixed to the outer diameter portion of the inner tube 110 by vulcanization molding, and the insulating member 130 includes a plurality of chambers 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 156, 157, 158, 159, 160, 161, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 200, 210, 211, 220, 221, 222, 230, 231, 232, 233, 234, 235, 236, 237, 2 134, 135 and 136, the outer tube 170 is assembled with the outer side of the isolation member 130 and is configured to surround the outer side of the isolation member 130, and the outer tube 170 is joined to the side of the vehicle body, and the flow path plates 151 and 161 are located between the isolation member 130 and the outer tube 170, and each of the flow path plates 151 and 161 provides a flow path, and the flow path is configured to allow the fluid to move between the chambers 131, 132, 133, 134, 135 and 136 of the isolation member 130.

[0050] In the above configuration, the inner tube 110 is also referred to as an “inner core”, and is formed to include a shaft insertion hole 111 provided at a substantially central portion of the cross section of the inner tube 110 and configured to allow a bolt to pass therethrough.

[0051] The inner tube 110 may be provided in a hollow tubular shape, in which case the hollow inner space of the inner tube 110 becomes the shaft insertion hole 111. In the inner tube 110, the shaft insertion hole 111 may be provided in a shape including a constant inner diameter in the axial direction (also referred to as the longitudinal direction) of the inner tube.

[0052] The suspension 100 according to the exemplary embodiment of the present invention further includes a fork portion 120 having a predetermined shape. Here, the fork portion 120 is provided in a state of being integrally joined to the outer circumferential surface of the inner tube 110, and is inserted and provided in the insulating member 130.

[0053] The fork-shaped portion 120 may be formed to be integral with the inner tube 110. Alternatively, the fork-shaped portion 120 may be manufactured separately and then assembled to be integrally fixed to the inner tube 110. For example, the inner tube 110 and the fork-shaped portion 120 may be molded simultaneously to be integrally manufactured. In addition, the inner tube 110 may be manufactured first, and the fork-shaped portion 120 may be molded on the inner tube 110 by a separate process to be integral with the inner tube 110.

[0054] Alternatively, the inner tube 110 including a specific cross-sectional shape is manufactured by extrusion molding using an aluminum alloy, and then the outer peripheral surface of the inner tube 110 may be bonded to the separately manufactured fork portion 120 or may be fixed to the fork portion 120 by welding or the like.

[0055] Regarding the shape of the fork-shaped portion 120, when observed from the cross-section of the suspension 100 and the inner tube 110, the fork-shaped portion 120 can be arranged around the inner tube 110 in a vertically and horizontally symmetrical shape, and the fork-shaped portion 120 includes a plurality of fork-shaped protrusions 121, which are formed to protrude from the inner tube 110 toward the left and right sides of the inner tube 110.

[0056] In the fork portion 120, a plurality of fork-shaped protrusions 121 may be formed to have wing-shaped members that are provided on the left and right sides of the inner tube 110 and are formed to protrude substantially in the horizontal direction. In addition, the plurality of fork-shaped protrusions 121 are formed to be spaced apart from each other at predetermined intervals in the vertical direction, and the same number of fork-shaped protrusions 121 may be formed on both the left and right sides of the inner tube 110.

[0057] In a state where the integrated inner tube 110 and fork portion 120 are prepared, the insulating member 130 is vulcanized and molded on the outer diameter portion of the inner tube 110 to surround the fork portion 120. In this case, the fork portion 120 is integrated with the insulating member 130 while being embedded in the insulating member 130.

[0058] When the fork-shaped portion 120 is inserted into the insulating member 130, each fork-shaped protrusion 121 of the fork-shaped portion 120 is inserted into a predetermined position of the insulating member 130. Here, each of the wing-shaped fork-shaped protrusions 121 is inserted between two adjacent cavities among the cavities 131, 132, 133, 134, 135, and 136 vertically stacked in the insulating member 130 and spaced apart from each other by a predetermined distance.

[0059] In the present structure, when an upper load or a lower load is applied through the inner tube 110, each fork-shaped protrusion 121 of the fork-shaped portion 120 pressurizes a corresponding one of the chambers 131, 132, 133, 134, 135, and 136 of the insulating member 130 respectively provided above or below the fork-shaped protrusion 121. Therefore, the fork-shaped portion 120 serves not only to increase the pumping pressure of the fluid (air or liquid fluid) in the chambers 131, 132, 133, 134, 135, and 136, but also to increase the shock absorbing dimension of the suspension 100.

[0060] The fork-shaped portion 120 may be selectively applied to the inner tube 110. Figure 7 An exemplary embodiment is shown in which the inner tube 110 does not include the fork-shaped portion 120. Figure 4 In the exemplary embodiment of the embodiment, the fork-shaped portion 120 integrally fixed to the inner tube 110 pressurizes the adjacent chambers 131, 132, 133, 134, 135 and 136 through the fork-shaped protrusion 121, but the suspension 100 can be operated even without the fork-shaped portion 120, as shown in Figure 7 shown.

[0061] The suspension without the fork-like portion 120 is advantageous in terms of cost and weight, but the shock absorbing performance is slightly reduced, compared to the suspension including the fork-like portion 120 configured to pressurize the chambers 131, 132, 133, 134, 135, and 136. In addition, although the fork-like portion 120 is used to improve the shock absorbing performance, even without the fork-like portion 120, the effect of improving the shock absorbing performance can be provided by the multi-chamber structure.

[0062] In the suspension 100 according to the exemplary embodiment of the present invention, the outer tube 170 is provided with a circular cross-sectional shape and is provided as a circular tube including a predetermined diameter to be press-fitted into and fixed to the mounting hole of the vehicle body side.

[0063] In the suspension 100 according to the exemplary embodiment of the present invention, the inner tube 110 is a component coupled to a vehicle-mounted device such as a motor of a PE system, and the outer tube 170 is a component coupled to a vehicle body side such as a subframe.

[0064] The insulating member 130 is also referred to as “rubber”, and may be formed by vulcanizing the rubber and molding the rubber into a predetermined shape to include a structure surrounding the inner tube 110 and the fork portion 120 .

[0065] Here, the insulating member 130 may be molded so that the fork portion 120 and the frame ( Fig.14 The frame 140 is integrally fixed in a state of being embedded in the insulating member 130 (reference numeral "140" in FIG. 1 ). The frame 140 is configured as a framework configured to maintain and support the overall shape of the insulating member 130 in a state of being embedded in the insulating member 130.

[0066] In a state where the insulating member 130 is molded as described above, a pair of flow path plates 151 and 161 are attached to the outer peripheral surface of the insulating member 130 to seal the chambers 131, 132, 133, 134, 135, and 136. Each of the flow path plates 151 and 161 may be manufactured to include a semicircular shape. When the two flow path plates 151 and 161 are engaged with each other to closely contact the outer peripheral surface (circumferential surface) of the insulating member 130, the two flow path plates 151 and 161 surround the entire outer peripheral surface of the insulating member 130 in a circular shape.

[0067] In addition, when the flow path plates 151 and 161 are attached to the outer peripheral surface of the insulating member 130 formed integrally with the inner tube 110 and the fork-shaped portion 120, the flow path plates 151 and 161 seal the chambers 131, 132, 133, 134, 135, and 136 by closing the corresponding fluid inlets / outlets of the chambers 131, 132, 133, 134, 135, and 136. Here, each fluid inlet / outlet is located on the outer peripheral surface of the insulating member 130.

[0068] Thus, the assembled inner tube 110, fork portion 120, insulating member 130, and flow path plates 151 and 161 are inserted into and joined to the outer tube 170. After joining, the outer circumferential surfaces of the flow path plates 151 and 161 are in close contact with the inner circumferential surface of the outer tube 170.

[0069] Therefore, after the suspension 100 is assembled, the insulating member 130 is located between the inner tube 110 and the outer tube 170 , and the flow path plates 151 and 161 are located between the outer circumferential surface of the insulating member 130 and the inner circumferential surface of the outer tube 170 .

[0070] In the suspension 100, the insulating member 130 is a member configured to integrally join and fix the inner tube 110 to the outer tube 170 and perform a vibration isolation function between the inner tube 110 and the outer tube 170, and the insulating member 130 is joined to the outer peripheral surface of the inner tube 110 and the outer surface of the fork-shaped portion 120 by vulcanization molding to be integrally fixed to the outer peripheral surface of the inner tube 110 and the outer surface of the fork-shaped portion 120.

[0071] Figure 8 is a perspective view showing a state in which an insulating member is coupled to an inner tube and a fork-shaped portion in a suspension according to an exemplary embodiment of the present invention, Fig. 9 1 is a perspective view showing a state in which a flow path plate in suspension according to an exemplary embodiment of the present invention is joined to an outer peripheral surface (circumferential surface) of an insulating member.

[0072] The insulating member 130 formed to surround the inner tube 110 and the fork-shaped portion 120 includes a symmetrical cross-sectional shape in the vertical direction and the horizontal direction (refer to Figure 4 ). In addition, in the isolation member 130, a plurality of chambers 131, 132, 133, 134, 135, and 136 are formed to be vertically stacked and are arranged in a state of being spaced apart from each other by a predetermined distance. For example, chambers 132 and 134 including four chambers and chambers 133 and 135 including four chambers may be arranged to be vertically stacked on the left and right sides of the cross section, respectively.

[0073] In this case, the insulating member 130 may include a horizontally symmetrical shape in the cross section of the suspension 100. Therefore, the chambers 132 and 134 including four chambers on the left side of the insulating member and the chambers 133 and 135 including four chambers on the right side of the insulating member may be arranged in the same shape and at the same interval.

[0074] Similarly, the insulating member 130 may include a vertically symmetrical shape in the cross section of the suspension 100. Therefore, the upper left chamber 132 and the upper right chamber 133 including four chambers (two chambers on the upper left side and two chambers on the upper right side) and the lower left chamber 134 and the lower right chamber 135 including four chambers (two chambers on the lower left side and two chambers on the lower right side) are arranged in the same shape and at the same interval.

[0075] In addition, refer to Figure 4 , in the cross section of the suspension 100, the left fork-shaped protrusion 121 of the fork-shaped portion 120 is inserted and disposed between two adjacent left chambers 132 and 134 of the insulating member 130. Similarly, referring to Figure 4 In the cross section of the suspension 100 , the right fork-shaped protrusion 121 of the fork-shaped portion 120 is inserted and disposed between two adjacent right chambers 133 and 135 of the insulating member 130 .

[0076] In addition, if Figure 4 As shown, in the cross section of the suspension 100, chambers 132 and 134 including a total of four chambers may be provided only on the left side. In more detail, two chambers are provided on the upper left side, and two chambers are provided on the lower left side. In addition, in the cross section of the suspension 100, chambers 133 and 135 including a total of four chambers may be provided only on the right side. In more detail, two chambers are provided on the upper right side, and two chambers are provided on the lower right side.

[0077] In an exemplary embodiment of the present invention, each of the chambers 131, 132, 133, 134, 135, and 136 may be provided by forming a chamber groove including a predetermined depth on the outer peripheral surface (circumferential surface) of the insulating member 130. Each of the chamber grooves of the chambers 132, 133, 134, and 135 located on the left and right sides includes a shape extending in the horizontal direction.

[0078] Each chamber groove forming the chambers 132, 133, 134, and 135 provided on opposite sides includes an open shape on the outer peripheral surface (circumferential surface) of the insulating member 130. The opening of each chamber groove on the outer peripheral surface of the insulating member 130 is configured as a fluid inlet / outlet configured to allow air or liquid fluid to enter and leave each of the chambers 132 and 135.

[0079] In addition, separate chamber grooves 130a and 130b are respectively formed at the upper end and the lower end of the isolation member 130, and the chamber grooves 130a and 130b are formed to be recessed to a predetermined depth. When the first flow path plate 151 of the pair of flow path plates 151 and 161 is tightly joined to the upper portion of the outer peripheral surface (circumferential surface) of the isolation member 130, the chamber groove 130a of the upper portion of the isolation member 130 and the first flow path plate 151 covering the chamber groove 130a form an upper chamber 131 as an independent sealed chamber.

[0080] Similarly, when the second flow path plate 161 of a pair of flow path plates 151 and 161 is tightly joined to the lower portion of the outer peripheral surface (circumferential surface) of the isolation part 130, the chamber groove 130b at the lower end of the isolation part 130 and the second flow path plate 161 covering the chamber groove 130b form a lower chamber 136 as a sealed independent chamber.

[0081] Therefore, in the illustrated exemplary embodiment of the present invention, chambers 131, 132, 133, 134, 135, and 136 including a total of 10 chambers sealed by the flow path plates 151 and 161 are provided in the insulating member 130. That is, the chambers 131, 132, and 133 including five chambers are provided at the upper portion of the suspension 100, and the chambers 134, 135, and 136 including five chambers are provided at the lower portion of the suspension 100.

[0082] In the following description, upper chambers 131 , 132 , and 133 including five chambers in the cross section of the suspension 100 will be referred to as “upper chambers”, and lower chambers 134 , 135 , and 136 including five chambers will be referred to as “lower chambers”.

[0083] In the illustrated exemplary embodiment of the present invention, although chambers 131, 132, 133, 134, 135 and 136 including a total of 10 chambers are provided, the number of chambers is exemplary, and the present invention is not limited thereto. The number of chambers 131, 132, 133, 134, 135 and 136 may be variously changed.

[0084] For example, a total of 12 chambers may be provided in the cross section of the suspension. In the cross section of the suspension, five chambers on the left side, five chambers on the right side, one chamber on the upper side, and one chamber on the lower side may be provided in the suspension. Alternatively, the number of chambers may be greater than 12 or less than 10.

[0085] In the cross section of the suspension 100, each chamber groove forming the left and right chambers 132, 133, 134, and 135 is formed in a shape including a predetermined depth (a predetermined length in the horizontal direction in the figure) on the surface of the insulating member. In this case, the upper surface and the lower surface of the inner side of each of the chambers 132, 133, 134, and 135 may be formed as horizontal planes parallel to each other.

[0086] In addition, as described above, the chamber grooves 130a and 130b are formed as recesses and are respectively formed at the upper and lower ends of the insulating member 130, thereby forming the upper chamber 131 and the lower chamber 136. Here, the lower surfaces of the chamber grooves 130a and 130b may be formed as flat surfaces, and may be formed to have a surface shape parallel to the upper and lower surfaces of the inner sides of the chambers 132, 133, 134, and 135 on the left and right sides (refer to Figure 3 , Figure 4 as well as Figure 7 ).

[0087] The flow path plates 151 and 161 are components that are configured to seal the chambers 131, 132, 133, 134, 135, and 136 of the isolation component 130 while being located between the isolation component 130 and the outer tube 170, and are configured to provide flow paths through which a fluid (air or liquid fluid) can move between the chambers 131, 132, 133, 134, 135, and 136.

[0088] As described above, when a pair of semicircular flow path plates 151 and 161 are in close contact with the outer peripheral surface (circumferential surface) of the isolation component 130, the two flow path plates 151 and 161 (i.e., the first flow path plate 151 and the second flow path plate 161) are combined to form an overall circular shape on the outer peripheral surface of the isolation component 130.

[0089] Figure 5 A pair of flow path plates 151 and 161 are shown joined to each other in a circular shape, and Figure 5 The flow path plates 151 and 161 shown in the figure can be used in air suspension. As shown in the figure, the flow path plates 151 and 161 have main flow paths 152 and 162 formed on their outer peripheral surfaces, respectively. Here, each main flow path 152 and 162 is arranged at a substantially central position of the outer peripheral surface in the width direction, extends in the longitudinal direction (which may be the circumferential direction) of the flow path plate, and includes a predetermined depth and width.

[0090] The main flow paths 152 and 162 are respectively provided on the outer peripheral surfaces of the flow path plates 151 and 161, and are formed by extending the respective flow path grooves in the longitudinal direction (circumferential direction) of the two flow path plates, each flow path groove including a predetermined depth and width. The main flow paths 152 and 162 have flow path holes 153 and 163, which are respectively formed to penetrate the bottom surfaces of the main flow paths 152 and 162, and are configured so that the fluid can move between the chambers 131, 132, 133, 134, 135, and 136 formed in the isolation member 130 and the main flow paths 152 and 162.

[0091] In the flow path plates 151 and 161, flow path holes 153 and 163 are formed to be arranged at predetermined intervals along the main flow paths 152 and 162. Figure 4 As shown, the main flow paths 152 and 162 include flow path holes 153 and 163 respectively formed on the bottom surfaces of the main flow paths 152 and 162, and each flow path hole 153 and 163 is arranged at a position corresponding to each opening, which serves as a fluid inlet / outlet of each chamber 131, 132, 133, 134, 135 and 136 set in the isolation part 130.

[0092] Reference Figure 4 Since the isolation part 130 includes chambers 131, 132, 133, 134, 135 and 136 having 10 chambers, flow path holes 153 and 163 including a total of 10 flow path holes are formed in the flow path plates 151 and 161, and each flow path hole 153 and 163 is set at a position corresponding to each opening of the chambers 131, 132, 133, 134, 135 and 136.

[0093] In the cross section of the suspension 100, a total of 10 flow path holes 153 and 163 are formed. Four flow path holes on the left side, four flow path holes on the right side, one flow path hole at the upper end, and one flow path hole at the lower end are formed in the suspension 100. The number of flow path holes is exemplary, and the present invention is not limited thereto. The number of flow path holes 153 and 163 in the flow path plates 151 and 161 may be variously changed.

[0094] exist Figure 5 , reference numerals "154" and "164" denote connection flow paths respectively formed on the outer peripheral surfaces of opposite ends of the flow path plates 151 and 161. The inner side of each of the connection flow paths 154 and 164 is connected to a corresponding one of the main flow paths 152 and 162 so that the fluid can move therebetween.

[0095] As an exemplary embodiment of the present invention, the connecting flow paths 154 and 164 can be provided on the outer peripheral surfaces of the opposite ends of each flow path plate 151 and 161, and are formed by extending each flow path groove from the main flow paths 152 and 162 to the end surfaces of the flow path plates 151 and 161 along the longitudinal direction (circumferential direction) of the flow path plate, each flow path groove including a predetermined width and depth. In this case, each connecting flow path 154 and 164 can be provided in the form of a micro flow path including a smaller flow path width and a smaller flow path cross-sectional area than the main flow paths 152 and 162.

[0096] In the suspension 100 according to the exemplary embodiment of the present invention, when a pair of flow path plates 151 and 161 are combined to be arranged in a circular shape on the outer circumferential surface of the insulating member 130 (refer to Fig. 9 ), each connection flow path 154 of the first flow path plate 151 is connected to each connection flow path 164 of the second flow path plate 161, thereby allowing air to move therebetween.

[0097] Therefore, the air exhausted from the upper chambers 131, 132, and 133 of the insulating member 130 and moved to the main flow path 152 of the first flow path plate 151 through the corresponding flow path holes 153 may flow along the main flow path 152. Thereafter, the air may move to the main flow path 162 of the second flow path plate 161 through the connecting flow path 154.

[0098] In the present manner, the air moved to the main flow path 162 of the second flow path plate 161 may flow along the main flow path 162. Thereafter, the air may move to the lower chambers 134, 135, and 136 of the insulating member 130 through the corresponding flow path holes 163.

[0099] On the contrary, the air exhausted from the lower chambers 134, 135, and 136 of the insulating member 130 and moved to the main flow path 162 of the second flow path plate 161 through the corresponding flow path holes 163 may flow along the main flow path 162. Thereafter, the air may move to the main flow path 152 of the first flow path plate 151 through the connecting flow path 164. In the present manner, the air moved to the main flow path 152 of the first flow path plate 151 may flow along the main flow path 152. Thereafter, the air may move to the upper chambers 131, 132, and 133 of the insulating member 130 through the corresponding flow path holes 153.

[0100] In the present manner, each flow path of the flow path plates 151 and 161 may be used as a flow path configured to move air (or liquid fluid) between the chambers 131, 132, 133, 134, 135, and 136. Each flow path plate 151 and 161 may provide a flow path configured to move air between the upper chambers 131, 132, and 133 and the lower chambers 134, 135, and 136.

[0101] In the chambers 131, 132, 133, 134, 135, and 136 including a total of 10 chambers in the suspension 100 according to the exemplary embodiment of the present invention, there are provided upper chambers 131, 132, and 133 including five chambers and lower chambers 134, 135, and 136 including five chambers. Here, the upper chambers 131, 132, and 133 are pressurized and compressed at the same time, or the lower chambers 134, 135, and 136 are pressurized and compressed at the same time.

[0102] Fig.11 , Fig.12 as well as Fig.13 2 is a schematic diagram showing an operating state of a suspension according to an exemplary embodiment of the present invention, Fig.12 1 shows a state where a downward load is applied to the suspension 100 through the inner tube 110. Fig.13 A state in which an upward load is applied to the suspension 100 through the inner tube 110 is shown.

[0103] When a load is input downward through the inner tube 110 of the suspension 100, the lower chambers 134, 135, and 136 are simultaneously compressed by the fork portion 120 of the inner tube 110 (or the inner tube itself). When the lower chambers 134, 135, and 136 are compressed, the fluid in the lower chambers moves to the upper chambers 131, 132, and 133 through the flow paths of the flow path plates 151 and 161 to simultaneously expand the upper chambers (see Fig.12 ).

[0104] On the contrary, when a load is input upward through the inner tube 110 of the suspension 100, the upper chambers 131, 132, and 133 are simultaneously compressed by the fork portion 120 of the inner tube 110 (or the inner tube itself). When the upper chambers 131, 132, and 133 are compressed, the fluid in the upper chambers moves to the lower chambers 134, 135, and 136 through the flow paths of the flow path plates 151 and 161 to simultaneously expand the lower chambers (see Fig.13 ).

[0105] As described above, the fluid discharged from the plurality of chambers 131 to 133 compressed at the same time moves to the plurality of opposite chambers 134 to 136 to simultaneously expand the opposite chambers. Here, shock absorption is performed by the process in which the fluid filled in the chambers compressed at the same time moves to the opposite chambers to simultaneously expand the opposite chambers.

[0106] Therefore, in the conventional rubber suspension, while the rubber insulating member is vertically compressed, the dynamic characteristics are reduced in the compression direction. On the other hand, in the suspension 100 according to the exemplary embodiment of the present invention, the rubber insulating member 130 moves in the shear direction by applying the stacked multi-chamber structure. Therefore, the dynamic characteristics of the suspension 100 in the exemplary embodiment of the present invention are lower than those of the conventional suspension 100 (low dynamic magnification, "dynamic magnification = dynamic characteristics / static characteristics"), and further, for the effect of improving the dynamic characteristics, there is an advantage in durability.

[0107] In the suspension 100 according to an exemplary embodiment of the present invention, the main flow path 152 of the first flow path plate 151 is a flow path including a large cross-sectional area, which is configured to connect the upper chambers 131, 132 and 133 of the isolation part 130 and is configured to allow air to move therebetween, and the main flow path 162 of the second flow path plate 161 is a flow path including a large cross-sectional area, which is configured to connect the lower chambers 134, 135 and 136 of the isolation part 130 and is configured to allow air to move therebetween.

[0108] In this case, the connecting flow path 154 of the first flow path plate 151 and the connecting flow path 164 of the second flow path plate 161 are flow paths, each of which includes a small cross-sectional area, configured to connect the main flow path 152 of the first flow path plate 151 to the main flow path 162 of the second flow path plate 161, and configured to connect the upper chambers 131, 132 and 133 to the lower chambers 134, 135 and 136, so that air moves therebetween.

[0109] As described above, in the suspension 100 according to an exemplary embodiment of the present invention, although the upper chambers 131, 132 and 133 including five chambers or the lower chambers 134, 135 and 136 including five chambers operate simultaneously to perform the same compression or expansion function, the upper chambers 131, 132 and 133 and the lower chambers 134, 135 and 136 are divided into a plurality of chambers, so that the pumping area can be increased.

[0110] Therefore, in the suspension 100 according to an exemplary embodiment of the present invention, a structure including stacked chambers 131, 132, 133, 134, 135 and 136 is applied to the isolation part 130, and the chambers 131, 132, 133, 134, 135 and 136 are filled with air or liquid fluid, so that not only the area inside the chambers 131, 132, 133, 134, 135 and 136 can be increased, but also the pumping area can be increased.

[0111] In addition, the suspension 100 according to the exemplary embodiment of the present invention is provided with a plurality of chambers 131, 132, 133, 134, 135 and 136, and the plurality of chambers 131, 132, 133, 134, 135 and 136 are configured to be compressed or expanded at the upper and lower parts of the insulating member at the same time and configured to provide a large amount of movement of the fluid (air or liquid fluid). Therefore, when the fluid is compressed, the compression force can be increased compared to the conventional suspension, and through the current configuration, the effect of greatly increasing the shock absorption value can be obtained.

[0112] In the above, the flow path plate of the air suspension using air as the fluid has been described. The present invention may be provided as a hydraulic suspension using a liquid fluid, Fig.10 1 is a perspective view showing flow path plates 151 and 161 applicable to a hydromount as another exemplary embodiment of the present invention.

[0113] As shown in the figure, as in the case of the flow path plate of the air damping mount, the flow path plates 151 and 161 for the hydraulic mount are also formed with main flow paths 152 and 162 and flow path holes 153 and 163 on the outer peripheral surfaces. However, the flow path plates 151 and 161 have separate damping flow paths 156 and 166 formed on the outer peripheral surfaces thereof, respectively, and arranged in a direction parallel to the main flow paths 152 and 162, instead of the connecting flow paths 154 and 164 each including a small cross-sectional area.

[0114] As with the main flow paths 152 and 162, the shock absorbing flow paths 156 and 166 can be formed by forming flow path grooves on the outer peripheral surfaces of the flow path plates 151 and 161, respectively, and extending along the longitudinal direction (which can be the circumferential direction) of the flow path plates, each flow path groove comprising a predetermined width and depth.

[0115] In this case, the width of each of the damping flow paths 156 and 166 can be set to be substantially similar to or slightly smaller than the width of each of the main flow paths 152 and 162. Therefore, as in the case of the main flow paths 152 and 162, each of the damping flow paths 156 and 166 can be set as a flow path including a large cross-sectional area.

[0116] When the damping flow paths 156 and 166 are formed on the entire outer circumferential surface of each flow path plate 151 and 161 and a pair of flow path plates 151 and 161 are combined in a circular shape, the damping flow paths 156 and 166 of the two flow path plates 151 and 161 form an annular flow path that is continuously connected to each other in a circular shape.

[0117] In addition, each of the flow path plates 151 and 161 includes a fluid flow path 157 provided on an outer peripheral surface thereof and configured to connect the main flow paths 152 and 162 to the damping flow paths 156 and 166. Therefore, the fluid flow path 157 fluidly communicating between the main flow paths 152 and 162 and the damping flow paths 156 and 166 may be provided individually or in plural.

[0118] Therefore, when the fluid discharged from a portion of the chambers 131, 132, 133, 134, 135 and 136 located on one side of the isolation part 130 flows into one of the main flow paths 152 and 162 through one of the flow path holes 153 and 163 of the two flow path plates 151 and 161, the fluid can be combined in the main flow paths 152 and 162 and then move to one of the damping flow paths 156 and 166 through the fluid flow path 157.

[0119] In addition, after the fluid flowing along one of the damping flow paths 156 and 166 moves to the other of the damping flow paths 156 and 166 of the two flow path plates 151 and 161, the fluid may move to the other of the main flow paths 152 and 162 through the fluid flow path 157 of the flow path plates 151 and 161. Thereafter, the fluid may move again to each of a portion of the chambers 131, 132, 133, 134, 135, and 136 located on the other side of the isolation member 130 through the other of the flow path holes 153 and 163.

[0120] The fluid flow path 157 can be formed by removing a portion of the flow path plate (the portion is set as a wall portion located between the main flow paths 152 and 162 and the shock absorbing flow paths 156 and 166), that is, the fluid flow path 157 can be formed by forming a groove in at least a portion of the portion of the flow path plate set as a wall portion.

[0121] In the present manner, in the case of the hydraulic mount, similarly, when a load is applied upward through the inner tube 110, the upper chambers 131, 132, and 133 are compressed simultaneously. Here, when the upper chambers 131, 132, and 133 are compressed, the fluid in the upper chambers sequentially passes through the flow path holes 153 of the first flow path plate 151, the main flow path 152, the fluid flow path 157, the damping flow path 156, and the damping flow path 166 of the second flow path plate 161, the fluid flow path, and the main flow path 162. Thereafter, the fluid flows into each of the lower chambers 134, 135, and 136 through the flow path holes 163, and simultaneously expands the lower chambers 134, 135, and 136.

[0122] On the contrary, when a load is applied downward through the inner tube 110, the lower chambers 134, 135, and 136 are compressed at the same time. Here, when the lower chambers 134, 135, and 136 are compressed, the fluid in the lower chambers sequentially passes through the flow path hole 163, the main flow path 162, the fluid flow path, the damping flow path 166 of the second flow path plate 161, and the damping flow path 156, the fluid flow path 157, and the main flow path 152 of the first flow path plate 151. Thereafter, the fluid flows into each of the upper chambers 131, 132, and 133 through the flow path hole 153, and simultaneously expands the upper chambers 131, 132, and 133.

[0123] The connection hole 155 can be formed in consideration of the assembly tolerance. Figure 5 The connection hole 155 may be provided by forming a groove disposed between end surfaces of the flow path plates 151 and 161 and connected to the connection flow paths 154 and 164. Here, the groove includes a width greater than a width of each of the connection flow paths 154 and 164.

[0124] Therefore, when the two flow path plates 151 and 161 are assembled, even if the positions of the connecting flow paths 154 and 164 arranged on the opposite sides of the flow path plates 151 and 161 are inconsistent with each other and deviate from each other, the connecting flow paths 154 and 164 of the two flow path plates 151 and 161 can be fluidly connected to each other so that air can move therebetween through the connecting hole 155 including a relatively wide width.

[0125] As an exemplary embodiment of the present invention, refer to Figure 8 and Fig. 9The isolation member 130 includes a recessed groove 137 formed on the outer peripheral surface of the isolation member 130 and configured such that the flow path plates 151 and 161 are inserted therein and seated thereon, so that the flow path plates 151 and 161 can be inserted into the groove 137 and engaged thereto.

[0126] In this case, when the insulating member 130 is molded, the insulating member 130 includes a rubber film 138 formed on the outer peripheral surface of the insulating member 130 and configured to extend in the axial direction of the insulating member 130, and the rubber film 138 includes an opening 139 located at a central portion of the rubber film 138 and formed by removing a portion of the rubber film 138.

[0127] The rubber film 138 is formed to absorb tolerance when the first flow path plate 151 and the second flow path plate 161 are assembled to each other. In addition, the rubber film 138 is located between the end surface of the first flow path plate 151 and the end surface of the second flow path plate 161, and is formed to protrude so that the end surfaces of the two flow path plates 151 and 161 are in close contact with the rubber film 138.

[0128] In addition, the opening 139 formed in the center portion of the rubber film 138 is a portion configured to fluidically communicate between the connecting flow paths 154 and 164 of the two flow path plates in a state where the flow path plates 151 and 161 are assembled to each other. In addition, the opening 139 is a portion provided as a channel through which the fluid is movable between the connecting flow paths 154 and 164.

[0129] Fig.14 , Fig.15 as well as Fig.16 is a schematic diagram illustrating a manufacturing process of a suspension according to an exemplary embodiment of the present invention. Fig.14 and Fig.15 FIG. 1 is a schematic diagram showing a manufacturing process of integrally joining the insulating member 130 to the inner tube 110 among components of the suspension 100 .

[0130] like Fig.14 As shown, the inner tube 110 and the fork portion 120 are molded integrally with each other, or after the inner tube 110 and the fork portion 120 are separately manufactured, the fork portion 120 is assembled on the outer circumferential surface of the inner tube 110 .

[0131] Therefore, after the inner tube 110, the fork portion 120 and the frame 140 are set in the mold, the insulating member 130 can be formed by vulcanizing and molding the rubber raw material. Therefore, the insulating member 130 formed integrally with the inner tube 110, the fork portion 120 and the frame 140 can be manufactured.

[0132] Since the inner surface and the inner space of each of the cavities 131, 132, 133, 134, 135, and 136 in the insulating member 130 are formed in the left-right direction, the mold can be removed from the insulating member 130 in the left-right direction after the insulating member 130 is molded (the mold is removable to the left and right (refer to Fig.15 )).

[0133] Afterwards, if Fig.16 As shown, after the first flow path plate 151 and the second flow path plate 161 are respectively assembled on the upper and lower sides of the outer peripheral surface (circumferential surface) of the insulating member 130, the insulating member 130 is inserted into the outer tube 170 in a state where the flow path plates 151 and 161 are assembled to each other.

[0134] In an exemplary embodiment of the present invention, the flow path plates 151 and 161 may be made of metal (e.g., aluminum alloy) or synthetic resin. In addition, in a state where the flow path plates 151 and 161 are assembled to each other, the insulating member 130 is inserted into the outer tube 170 and then joined and fixed to the outer tube 70 by a swaging process, thereby sealing the flow paths of the flow path plates 151 and 162 and the chambers 131, 132, 133, 134, 135, and 136 of the insulating member 130.

[0135] In the present manner, the vehicle suspension according to the exemplary embodiment of the present invention has been described in detail. The vehicle suspension of the present invention includes a multi-chamber shock absorbing structure in which a plurality of chambers are vertically stacked in an insulating member (rubber), so that the pumping area, shock absorbing value and shock absorbing size can be increased compared to the conventional bushing type suspension.

[0136] In addition, according to the exemplary embodiment of the present invention, both hydraulic mount and air damping mount can be realized by adjusting the flow path length and cross-sectional area of ​​the flow path plate. The stacking structure is applied to the bridge portion of the insulating member, so that the durability and dynamic characteristics of a single product can be improved.

[0137] Furthermore, since the insulating member is configured to move in the shear direction in a compressed state, the durability of the suspension can be improved, and the dynamic characteristics can be improved, thereby reducing noise, vibration and harshness (NVH) (howling noise).

[0138] As is apparent from the above description, various aspects of the present invention are intended to provide a vehicle suspension according to an exemplary embodiment of the present invention, which includes a multi-chamber shock absorbing structure in which a plurality of chambers are vertically stacked in an insulating member (rubber). Therefore, compared with a conventional bushing type suspension, a pumping area, a shock absorbing value, and a shock absorbing size can be increased.

[0139] In addition, according to the exemplary embodiment of the present invention, by adjusting the flow path length and cross-sectional area of ​​the flow path plate, both hydraulic suspension and air shock-absorbing suspension can be realized. The stacking structure is applied to the bridge portion of the insulation member, improving the durability and dynamic characteristics of a single product.

[0140] Furthermore, since the insulating member is configured to move in the shear direction when the insulating member is compressed, the durability performance of the suspension can be improved, and the dynamic characteristics can be improved. Therefore, NVH (howling noise) can be reliably reduced.

[0141] For convenience of explanation and precise definition of the appended claims, the terms "upper", "lower", "inner", "outer", "above", "below", "upward", "downward", "front", "rear", "back", "inside", "outside", "inwardly", "outwardly", "interior", "exterior", "inner", "exterior", "forward", "rearward" are used to describe the features of the exemplary embodiments with reference to the positions of such features as shown in the accompanying drawings. It will be further understood that the term "connect" or its derivatives refer to both direct and indirect connections.

[0142] The term "and / or" may include a combination of a plurality of related listed items or any one of a plurality of related listed items. For example, "A and / or B" includes all three cases, such as "A", "B" and "A and B".

[0143] In this specification, unless otherwise stated, a singular expression includes a plural expression unless the context clearly indicates otherwise.

[0144] In an exemplary embodiment of the present invention, “at least one of A and B” may refer to “at least one of A or B” or “at least one of a combination of at least one of A and B”. Furthermore, “one or more of A and B” may refer to “one or more of A or B” or “one or more of a combination of one or more of A and B”.

[0145] In exemplary embodiments of the present invention, it should be understood that terms such as “including” or “having” are intended to specify the presence of features, values, steps, operations, elements, parts, or a combination thereof described in the specification, and do not exclude the possibility of adding or existing one or more other features, values, steps, operations, elements, parts, or a combination thereof.

[0146] The foregoing description of the specific exemplary embodiments of the present invention is presented for the purpose of illustration and description. The foregoing description is not intended to be exhaustive, nor is it intended to limit the present invention to the precise form disclosed, and it is apparent that many changes and variations are possible in light of the above teachings. The exemplary embodiments are selected and described in order to explain the specific principles of the present invention and its practical application, so that other technicians in the field can realize and utilize the various exemplary embodiments of the present invention and its different selected forms and modified forms. The scope of the present invention is intended to be limited by the appended claims and their equivalents.

Claims

1. A vehicle suspension, include: an inner tube that is coupled to the vehicle-mounted device; an insulating member molded integrally with the inner tube, wherein the insulating member includes a stacking structure formed in the insulating member and configured such that a plurality of chambers filled with a fluid are vertically spaced apart from each other; a flow path plate formed to provide a flow path configured to enable fluid to move between the chambers in a state of being bonded to the outer peripheral surface of the insulating member and sealing the chambers including the stacked structure; and An outer tube, which is joined to the insulating member and the flow path plate and is configured to surround the insulating member and the flow path plate, is joined to a vehicle body side.

2. The vehicle suspension according to claim 1, further comprising a fork-shaped portion provided in a state of being coupled to the inner tube, the fork-shaped portion including fork-shaped protrusions, each fork-shaped protrusion pressurizing a corresponding one of the chambers in a state of being embedded in the insulating member.

3. The vehicle suspension according to claim 2, in, In a cantilevered cross section, the fork-like portion comprises a horizontally symmetrical shape, the cross section being taken along a transverse direction perpendicular to the axial direction of the inner tube.

4. The vehicle suspension according to claim 3, in, In the suspended cross section, the fork portion further includes a plurality of fork-shaped protrusions respectively formed on the left and right sides of the fork portion.

5. The vehicle suspension according to claim 4, in: In the suspended cross-section, the insulating member comprises a horizontally symmetrical shape; The insulating member includes a stacking structure formed therein and configured such that a plurality of chambers are vertically spaced apart from each other on left and right sides of the insulating member; Each fork-like projection is arranged to be located between chambers that are vertically spaced apart from each other.

6. The vehicle suspension according to claim 5, in: In the suspended cross-section, the insulating member comprises a vertically symmetrical shape; Multiple chambers include: a plurality of upper chambers formed in the suspended cross section to be disposed on the upper left and upper right sides of the insulating member; and A plurality of lower chambers are formed in the suspended cross section to be disposed at the left and right lower sides of the insulating member.

7. The vehicle suspension according to claim 6, in, In the cantilevered cross-section, the fork-shaped portion further comprises a vertically symmetrical shape.

8. The vehicle suspension according to claim 2, in: In the suspended cross-section, the insulating member comprises a vertically symmetrical shape; Multiple chambers include: a plurality of upper chambers formed in an overhanging section to be disposed at an upper portion of the insulating member; and A plurality of lower chambers are formed in the suspended section to be disposed at a lower portion of the insulating member.

9. The vehicle suspension according to claim 8, in: The forked portion includes a plurality of forked protrusions; Each fork-like projection is arranged to be located between chambers in the insulating member that are vertically spaced apart from each other.

10. The vehicle suspension according to claim 9, in, In the cantilevered cross-section, the fork-shaped portion further comprises a vertically symmetrical shape.

11. The vehicle suspension according to claim 1, in: The insulating member comprises a vertically and horizontally symmetrical shape in a suspended cross section, the cross section being taken along a transverse direction perpendicular to the axial direction of the inner tube; The insulating member includes a stack structure formed therein and configured such that a plurality of chambers are vertically spaced apart from each other at an upper portion of the insulating member and a lower portion of the insulating member.

12. The vehicle suspension according to claim 11, in: Each of the chambers of the insulating member is provided by forming a chamber groove in an outer peripheral surface of the insulating member, the chamber groove comprising a predetermined width and depth; Each chamber includes a fluid inlet / outlet provided on an outer peripheral surface of the insulating member and configured to allow fluid to enter and exit between the chamber and the flow path of the flow path plate.

13. The vehicle suspension according to claim 12, in, In the suspended cross section, a plurality of chambers are formed along a horizontally extending direction, and the chambers form a stacked structure at an upper portion of the insulating member and a lower portion of the insulating member.

14. The vehicle suspension according to claim 11, in: The flow path plate includes a first flow path plate joined to an upper portion of an outer peripheral surface of the insulating member and a second flow path plate joined to a lower portion of the outer peripheral surface of the insulating member; The first flow path plate and the second flow path plate are located between the insulating member and the outer tube in a state of being combined in a circular shape.

15. The vehicle suspension according to claim 14, in: each of the first flow path plate and the second flow path plate includes a main flow path formed on an outer peripheral surface of the first flow path plate and the second flow path plate in contact with an inner peripheral surface of the outer tube, the main flow path being formed to extend in a circumferential direction of the outer peripheral surface; The main flow path includes flow path holes formed therethrough, each flow path hole being disposed at a position corresponding to a corresponding one of the chambers of the insulating member and configured to enable fluid movement between a corresponding chamber of the plurality of chambers and the main flow path.

16. The vehicle suspension according to claim 15, in: The first flow path plate and the second flow path plate include connecting flow paths formed on outer peripheral surfaces of opposite ends of the first flow path plate and outer peripheral surfaces of opposite ends of the second flow path plate, respectively, each connecting flow path enabling fluid to move from a main flow path of each of the first flow path plate and the second flow path plate to an end surface of each of the first flow path plate and the second flow path plate; In a state where the first flow path plate and the second flow path plate are combined in a circular shape on an outer peripheral surface of the insulating member, the connection flow paths of the first flow path plate and the second flow path plate are connected to each other so that a fluid can move therebetween; Each of the connection flow paths respectively formed in the first flow path plate and the second flow path plate is formed to include a flow path width and a flow path cross-sectional area smaller than those of the main flow path.

17. The vehicle suspension according to claim 16, in: A connection hole is formed between ends of a connection flow path formed respectively in the first flow path plate and the second flow path plate; The connection hole is provided by forming a groove disposed between opposite end surfaces of the first flow path plate and the second flow path plate and connected to the connection flow path, the groove including a width greater than a width of each of the connection flow paths.

18. The vehicle suspension according to claim 16, in: the insulating member including a groove formed on an outer peripheral surface of the insulating member and configured such that the first flow path plate and the second flow path plate are inserted into and engaged to the groove; The insulating member includes a rubber film located between an end surface of the first flow path plate and an end surface of the second flow path plate and formed to protrude so that the end surfaces of the first flow path plate and the second flow path plate can contact the rubber film.

19. The vehicle suspension according to claim 18, in: The rubber membrane includes an opening formed in a central portion thereof; The opening fluidly communicates between the connecting flow paths of the first flow path plate and the second flow path plate to enable fluid to move therebetween.

20. The vehicle suspension according to claim 14, in: the first flow path plate and the second flow path plate including a main flow path, a damping flow path, and a fluid flow path, the main flow path, the damping flow path, and the fluid flow path being formed on outer peripheral surfaces of the first flow path plate and the second flow path plate in contact with the inner peripheral surface of the outer tube, each of the main flow path and the damping flow path being formed to extend in a longitudinal direction of each of the first flow path plate and the second flow path plate, the fluid flow path connecting the main flow path to the damping flow path; The main flow path includes flow path holes formed through the main flow path, each flow path hole being disposed at a position corresponding to a respective one of the chambers of the insulating member and enabling fluid to move between the chamber and the main flow path; In a state where the first and second flow path plates are combined in a circular shape on the outer peripheral surface of the insulating member, the damping flow path of the first flow path plate and the damping flow path of the second flow path plate are connected in a circular shape to form an annular flow path.

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