Pull rod suspension assembly and vehicle

Abstract

The invention relates to a pull rod suspension assembly and a vehicle. The pull rod suspension assembly comprises a rubber main spring assembly and a hydraulic main spring assembly. The rubber main spring assembly comprises an outer framework, rubber cavity rubber and a rubber main spring inner core. The outer framework comprises a closed annular bracket and a power assembly mounting bracket connected with the annular bracket; a first air accommodating area and a second air accommodating area which are communicated with each other are formed in the annular bracket; the rubber cavity rubber and the rubber main spring inner core are located in the second air containing area, and the hydraulic main spring assembly is located in the first air containing area and protrudes into the second air containing area to be connected with the rubber main spring inner core. The pull rod suspension assembly has the damping characteristic and is simple in structure.

Description

Technical Field

[0001] The present application relates to the automotive field, and in particular to a tie rod suspension assembly and a vehicle. Background Art

[0002] With the advent of the new energy and intelligent vehicle era, hybrid models have emerged as a significant force in the new energy vehicle market, enjoying a strong following among consumers due to their combination of a pure electric driving experience and the absence of range anxiety. Hybrid vehicles often integrate the engine, motor, and reducer within the front cabin, resulting in a very high mass for the entire powertrain. When the vehicle travels over rough surfaces, such as those with speed bumps and potholes, the powertrain experiences a pitch (Ry) oscillation within the front cabin. Current rear suspension tie rod designs, which are all pure rubber, are unable to effectively absorb this oscillation energy, causing vibration to be transmitted to the vehicle interior, impacting ride comfort. While pure rubber mounts cannot quickly attenuate this oscillation energy, hydraulic mounts have emerged as a potential solution. However, the bulk of traditional hydraulic mounts prevents their placement within the subframe.

[0003] Therefore, it is necessary to provide an improved tie rod suspension assembly and vehicle to solve the above problems. Summary of the Invention

[0004] The present application provides a tie rod suspension assembly and a vehicle with damping characteristics and a simple structure.

[0005] The present application discloses a tie rod suspension assembly, which includes a rubber main spring assembly and a hydraulic main spring assembly; the rubber main spring assembly includes an outer frame, rubber in a rubber cavity and a rubber main spring inner core; the outer frame includes a closed annular bracket and a powertrain mounting bracket connected to the annular bracket; a first hollow area and a second hollow area that are interconnected are formed in the annular bracket; the rubber in the rubber cavity and the rubber main spring inner core are located in the second hollow area, and the hydraulic main spring assembly is located in the first hollow area and protrudes into the second hollow area to be connected to the rubber main spring inner core.

[0006] Furthermore, the first empty space is located in front of the second empty space, and the powertrain mounting bracket is located in front of the first empty space.

[0007] Furthermore, the first receiving area and the second receiving area are both vertically penetrating structures, the hydraulic main spring assembly is pressed into the first receiving area along the vertical direction, and the hydraulic main spring assembly and the outer skeleton are interference fit.

[0008] Furthermore, the hydraulic main spring assembly is engaged with the rubber main spring inner core through a mortise and tenon structure, and the hydraulic main spring assembly is engaged with the rubber main spring inner core while being pressed into the first receiving area.

[0009] Furthermore, the outer skeleton, the rubber cavity rubber and the rubber main spring inner core are an integrated structure made through a vulcanization process; and / or, the hydraulic main spring assembly includes a hydraulic main spring, and the hydraulic main spring includes a hydraulic main spring skeleton, a hydraulic main spring inner core and a hydraulic cavity rubber; the hydraulic main spring skeleton, the hydraulic main spring inner core and the hydraulic cavity rubber are an integrated structure made through a vulcanization process.

[0010] Furthermore, the rubber main spring inner core is arranged in the middle of the second hollow area, and the rubber cavity rubber includes a rear support part connected to the annular bracket and located at the rear of the rubber main spring inner core, and there is a gap between the rear support part and the rubber main spring inner core; the rubber cavity rubber includes a pair of side connecting parts located on both sides of the rubber main spring inner core, and the pair of side connecting parts are respectively connected to the annular bracket and the rubber main spring inner core at the same time.

[0011] Furthermore, the rubber main spring inner core includes a base and a T-shaped protrusion located on the front side of the base, and the base is provided with a sub-frame mounting hole; and / or, the hydraulic main spring inner core includes a main body, and a T-shaped slot is provided on the rear side of the main body; the T-shaped slot and the T-shaped protrusion form the mortise and tenon structure.

[0012] Furthermore, the exoskeleton includes a pair of protrusions extending inwardly from the annular bracket relative to each other, and the pair of protrusions are located at the connection between the first hollow area and the second hollow area; the rubber of the rubber cavity also includes a pair of front support parts formed on the pair of protrusions and facing the second hollow area; the hydraulic main spring inner core includes a pair of winglets located on both sides of the main body, and the pair of winglets are respectively arranged opposite to the pair of front support parts, and there is a gap between each of the winglets and the corresponding front support part.

[0013] Furthermore, the hydraulic main spring assembly also includes a cover plate, a flow channel, a leather cup, a sealing bottom plate and a steel ball; the hydraulic main spring forms a main chamber, the cover plate, the flow channel, the leather cup and the sealing bottom plate are sequentially arranged on the front side of the main chamber, and the leather cup forms a sub-chamber; the rear side of the main chamber is provided with an injection hole connected to the outside, and the steel ball is arranged in the injection hole and seals the injection hole.

[0014] The present application also discloses a vehicle, which includes the tie rod suspension assembly as described above.

[0015] The present application has the following beneficial effects: the hydraulic main spring assembly is integrated into the rubber main spring assembly, so that the pull rod suspension assembly has damping characteristics; the hydraulic main spring assembly and the rubber main spring assembly share an external skeleton, and the structure is simple; the hydraulic main spring assembly is connected to the inner core of the rubber main spring, so that the layout structure of the hydraulic main spring assembly and the rubber main spring assembly are separated while realizing the linkage of the functions of the two.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0018] Figure 1 This is a three-dimensional diagram of the tie rod suspension assembly of this application.

[0019] Figure 2 for Figure 1 Top view of the center tie rod suspension assembly.

[0020] Figure 3 for Figure 1 Cross-sectional view of the center tie-rod suspension assembly.

[0021] Figure 4 This is a three-dimensional view of the rubber main spring component of the tie rod suspension assembly of this application.

[0022] Figure 5 for Figure 4 Exploded view of the middle rubber main spring assembly.

[0023] Figure 6 This is a three-dimensional view of the hydraulic main spring assembly of the tie rod suspension assembly of this application.

[0024] Figure 7 for Figure 6 Exploded view of the hydraulic main spring assembly.

[0025] Figure 8 for Figure 7 Exploded view of the hydraulic main spring.

[0026] Description of Figure Numbers:

[0027] 10. Rubber main spring assembly; 11. Exoskeleton; 111. Ring bracket; 112. Powertrain mounting bracket; 1121. Support arm; 1122. Through hole; 113. First empty space; 1131. Cavity; 114. Second empty space; 115. Protrusion; 12. Rubber cavity rubber; 121. Rear support; 122. Side connection; 123. Front support; 13. Rubber main spring inner core; 131. Base; 132. T-shaped protrusion; 133. Subframe mounting hole; 134. Tail; 2 0. Hydraulic main spring assembly; 21. Hydraulic main spring; 211. Hydraulic main spring frame; 2111. Chamber; 2112. Protrusion; 212. Hydraulic main spring inner core; 2121. Main body; 2122. T-slot; 2123. Wing; 2124. Injection hole; 213. Hydraulic chamber rubber; 214. Main chamber; 22. Cover plate; 221. Flow channel inlet; 23. Flow channel; 24. Leather cup; 241. Sub-chamber; 25. Sealing bottom plate; 251. Ring body; 252. Snap ring; 26. Steel ball. DETAILED DESCRIPTION

[0028] Here, the technical solutions in the embodiments (or "implementations") of the present application will be clearly and completely described in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0029] If there are terms related to directional indications or positional relationships in the embodiments of this application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components in a specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first" and "second" in the embodiments of this application are only used for the purpose of convenience of description and should not be understood as indicating or implying relative importance.

[0030] The host and food processor of the embodiment of the present application are described in detail below with reference to the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can complement or combine with each other.

[0031] Please refer to Figure 1 As shown, the present application provides a tie rod suspension assembly, which includes a rubber main spring assembly 10 and a hydraulic main spring assembly 20. The rubber main spring assembly 10 includes an outer frame 11, a rubber cavity rubber 12, and a rubber main spring inner core 13. The outer frame 11, the rubber cavity rubber 12, and the rubber main spring inner core 13 are an integral structure manufactured through a vulcanization process.

[0032] Please refer to Figures 2 to 5As shown, exoskeleton 11 forms the outer framework of the entire tie rod suspension assembly. It is the primary load-bearing component, providing support and position limiting, while also connecting to the powertrain. Exoskeleton 11 is made of metal and can be manufactured using casting or extrusion processes. It includes a closed annular bracket 111 and a powertrain mounting bracket 112 connected to the bracket.

[0033] The annular support 111 defines a first, interconnected receiving area 113 and a second, interconnected receiving area 114. The first receiving area 113 is located in front of the second receiving area 114, and the powertrain mounting bracket 112 is located in front of the first receiving area 113. Both the first and second receiving areas 113 and 114 are vertically through-hole structures, i.e., they are through-holes in the Z-direction of the vehicle. The exoskeleton 11 also includes a pair of protrusions 115 extending inward from the annular support 111. These protrusions 115 are located at the junction of the first and second receiving areas 113 and 114.

[0034] The powertrain mounting bracket 112 includes a pair of arms 1121 extending forward from the front end of the annular bracket 111. Each arm 1121 is provided with a through hole 1122. The through hole 1122 is arranged along the left and right direction, i.e., the Y direction of the vehicle, for fixing to the powertrain.

[0035] The rubber cavity rubber 12 and the rubber main spring inner core 13 are located in the second hollow area 114. The hydraulic main spring assembly 20 is located in the first hollow area 113 and protrudes into the second hollow area 114 to connect with the rubber main spring inner core 13. Specifically, the hydraulic main spring assembly 20 and the rubber main spring inner core 13 are engaged by a mortise and tenon structure.

[0036] The rubber cavity rubber 12 connects the exoskeleton 11 and the rubber main spring core 13 and covers most of the outer surfaces facing each other. The rubber cavity rubber 12 includes a rear support portion 121 connected to the annular bracket 111 and located behind the rubber main spring core 13; a pair of side connection portions 122 located on either side of the rubber main spring core 13; and a pair of front support portions 123. The pair of side connection portions 122 connect the annular bracket 111 and the rubber main spring core 13, respectively. The pair of front support portions 123 are formed on the pair of protrusions 115 and face the second accommodating area 114. The rubber cavity rubber 12 provides rigidity to the rubber main spring assembly 10 and also acts as a vibration isolation device.

[0037] The rubber main spring core 13 is positioned in the middle of the second housing 114. It comprises a base 131, a T-shaped protrusion 132 located in front of the base 131, and a tail 134 located in the rear of the base 131. The base 131 is provided with a subframe mounting hole 133 for secure connection to the subframe. A gap exists between the rear support 121 and the rubber main spring core 13, specifically between the rear support 121 and the tail 134. This gap allows the rear support 121 to support and limit the tail 134 after displacement.

[0038] The rubber main spring core 13 is made of metal and can be formed by casting or extrusion. It is connected to both the subframe and the hydraulic main spring assembly 20. Under acceleration, the rubber main spring core 13 limits the displacement of the tie rod suspension assembly.

[0039] Please also refer to Figures 5 to 8 As shown, the hydraulic main spring assembly 20 is pressed into the first receiving area 113 along the vertical direction (i.e., the Z-direction of the vehicle), creating an interference fit between the hydraulic main spring assembly 20 and the exoskeleton 11. While being pressed into the first receiving area 113, the hydraulic main spring assembly 20 simultaneously engages with the rubber main spring inner core 13. The hydraulic main spring assembly 20 includes a hydraulic main spring 21, a cover plate 22, a flow channel 23, a leather cup 24, a sealing base plate 25, and a steel ball 26.

[0040] The hydraulic main spring 21 includes a hydraulic main spring skeleton 211, a hydraulic main spring inner core 212 and a hydraulic cavity rubber 213. The hydraulic main spring skeleton 211, the hydraulic main spring inner core 212 and the hydraulic cavity rubber 213 are an integral structure made by a vulcanization process.

[0041] The hydraulic main spring frame 211 is a metal structure that can be cast. Its upper portion supports the hydraulic chamber rubber 213, and its lower portion houses the flow channel 23. The hydraulic main spring frame 211 is hollow, with a chamber 2111 formed within it. Several protrusions 2112 are circumferentially arranged along the front side of the hydraulic main spring frame 211.

[0042] The hydraulic main spring core 212 includes a main body 2121 with a T-slot 2122 defined on the rear side. The T-slot 2122 engages with the T-shaped protrusion 132, forming a mortise and tenon joint structure. The hydraulic main spring core 212 includes a pair of fins 2123 located on either side of the main body 2121. These fins 2123 are positioned opposite a pair of front support sections 123, with a gap between each fin 2123 and its corresponding front support section 123. The front support sections 123 provide support and position control for the fins 2123 after displacement.

[0043] The hydraulic main spring 21 forms a main chamber 214. The cover plate 22, flow channel 23, leather cup 24, and sealing base plate 25 are installed within the chamber 2111 and positioned in sequence at the front of the main chamber 214. A liquid injection hole 2124, communicating with the outside, is located at the rear of the main chamber 214. A steel ball 26 is positioned within and seals the liquid injection hole 2124.

[0044] The hydraulic main spring core 212 is a metal structure, which can be formed by casting or extrusion. It is connected to the rubber main spring assembly 10 and also limits the movement of the tie rod suspension assembly during deceleration or reverse. The hydraulic cavity rubber 213 forms the main chamber 214 of the hydraulic main spring 21 and provides a certain degree of rigidity.

[0045] The cover plate 22 isolates the flow channel 23 from the main chamber 214 and provides a flow channel inlet 221 for the flow channel 23 to communicate with the main chamber 214. The leather cup 24 forms a secondary chamber 241. The sealing base plate 25 includes an annular body 251 and a plurality of retaining rings 252 connected to the annular body 251. The retaining rings 252 are secured to the protrusions 2112 by snap-fitting.

[0046] To assemble the hydraulic main spring assembly 20, the cover plate 22, flow channel 23, and leather cup 24 are sequentially placed into the chamber 2111. The sealing base plate 25 is then secured and sealed by snapping onto the hydraulic main spring frame 211. Vacuum is then drawn and hydraulic oil is injected through the injection port 2124 above the hydraulic main spring 21. Once injection is complete, the steel ball 26 is pressed in to seal the assembly.

[0047] When the hydraulic main spring 21 is subjected to pressure, the hydraulic oil in the main chamber 214 is squeezed through the flow channel inlet 221 of the cover plate 22, entering the flow channel 23, and then flowing into the secondary chamber 241 of the leather cup 24. This process produces damping characteristics. Because the layout space of the rear tie rod suspension is generally small, in order to meet the highest possible damping requirements within such a small space, this application eliminates the decoupling membrane of the traditional hydraulic suspension. The cover plate 22 is directly placed against the flow channel 23, utilizing the space originally provided by the decoupling membrane to extend the flow channel 23 and provide higher damping.

[0048] A cavity 1131 is defined between the front side of the hydraulic main spring assembly 20 and the exoskeleton 11. Cavity 1131 is roughly rectangular and slightly narrower than the hydraulic main spring 21. The rubber cavity 12 and the hydraulic main spring assembly 20 have similar lengths in the front-to-back direction. The width of the rubber cavity 12 is no greater than the width of the hydraulic main spring assembly 20. The rubber main spring assembly 10 and the hydraulic main spring assembly 20 are similar in height. The entire tie rod suspension assembly is equal to the height of the hydraulic main spring assembly 20.

[0049] The present application also provides a vehicle, which includes the tie rod suspension assembly as described above.

[0050] The hydraulic main spring assembly 20 and the rubber main spring assembly 10 of this application form a hydraulically-operated tie rod suspension assembly through interference fit and mortise and tenon joints. The hydraulic main spring assembly 20 is integrated into the rubber main spring assembly 10, and the hydraulic main spring assembly 20 and the rubber main spring assembly 10 share an exoskeleton 11. This not only simplifies the structure but also incorporates front-to-back damping characteristics, i.e., the vehicle's X-direction damping, while meeting the basic functions of a traditional structure. This effectively attenuates the powertrain's pitch (Ry) vibration when the vehicle is traveling on rough surfaces, speed bumps, potholes, and other poorly smooth surfaces, improving ride comfort.

[0051] The present application decouples the hydraulic main spring assembly 20 and the rubber main spring assembly 10. When the vehicle has sufficient space in the X direction but insufficient space in the Y and Z directions, the X-direction space of the vehicle is fully utilized, and the dimensions of the tie rod suspension assembly in the Y and Z directions are greatly reduced, so that it can be arranged within the layout space of the original pure rubber suspension, reducing the layout space requirement of the tie rod suspension assembly.

[0052] The mortise and tenon joint structure of the hydraulic main spring assembly 20 and the rubber main spring assembly 10 and the process of side pressing the hydraulic main spring assembly 20 and the outer skeleton 11 realize the separation of the layout structure of the hydraulic main spring assembly 20 and the rubber main spring assembly 10 while linking the functions and effects of the two.

[0053] The hydraulic main spring assembly 20 is arranged on the front side of the rubber main spring assembly 10. The hydraulic main spring is designed to work in a state of tension during acceleration and compression during deceleration. This can achieve lower transient dynamic stiffness under acceleration conditions and better acceleration NVH performance.

[0054] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application shall be included in the scope of protection of this application.

Claims

1. A tie rod suspension assembly, characterized in that: It includes a rubber main spring assembly and a hydraulic main spring assembly; the rubber main spring assembly includes an outer frame, rubber in a rubber cavity and a rubber main spring inner core; the outer frame includes a closed annular bracket and a powertrain mounting bracket connected to the annular bracket; a first hollow area and a second hollow area that are interconnected are formed in the annular bracket; the rubber in the rubber cavity and the rubber main spring inner core are located in the second hollow area, and the hydraulic main spring assembly is located in the first hollow area and protrudes into the second hollow area to connect with the rubber main spring inner core.

2. The tie rod suspension assembly according to claim 1, characterized in that: The first housing area is located in front of the second housing area, and the powertrain mounting bracket is located in front of the first housing area.

3. The tie rod suspension assembly according to claim 1, characterized in that: The first receiving area and the second receiving area are both vertically penetrating structures, the hydraulic main spring assembly is pressed into the first receiving area along the vertical direction, and the hydraulic main spring assembly and the outer frame are interference fit.

4. The tie rod suspension assembly according to claim 3, characterized in that: The hydraulic main spring assembly is engaged with the rubber main spring inner core through a mortise and tenon structure. The hydraulic main spring assembly is pressed into the first receiving area and engaged with the rubber main spring inner core at the same time.

5. The tie rod suspension assembly according to claim 4, characterized in that: The outer skeleton, the rubber cavity rubber and the rubber main spring inner core are an integrated structure made through a vulcanization process; and / or, the hydraulic main spring assembly includes a hydraulic main spring, and the hydraulic main spring includes a hydraulic main spring skeleton, a hydraulic main spring inner core and a hydraulic cavity rubber; the hydraulic main spring skeleton, the hydraulic main spring inner core and the hydraulic cavity rubber are an integrated structure made through a vulcanization process.

6. The tie rod suspension assembly according to claim 5, characterized in that: The rubber main spring inner core is arranged in the middle of the second hollow area, and the rubber of the rubber cavity includes a rear support part connected to the annular bracket and located at the rear of the rubber main spring inner core, and a gap is provided between the rear support part and the rubber main spring inner core; the rubber cavity rubber includes a pair of side connecting parts located on both sides of the rubber main spring inner core, and the pair of side connecting parts are respectively connected to the annular bracket and the rubber main spring inner core at the same time.

7. The tie rod suspension assembly according to claim 5, characterized in that: The inner core of the rubber main spring includes a base and a T-shaped protrusion located on the front side of the base, and the base is provided with a sub-frame mounting hole; and / or the inner core of the hydraulic main spring includes a main body, and the rear side of the main body is provided with a T-shaped slot; the T-shaped slot and the T-shaped protrusion form the mortise and tenon structure.

8. The tie rod suspension assembly according to claim 7, characterized in that: The exoskeleton includes a pair of protrusions extending inwardly from the annular bracket, and the pair of protrusions are located at the connection between the first hollow area and the second hollow area; the rubber of the rubber cavity also includes a pair of front support parts formed on the pair of protrusions and facing the second hollow area; the inner core of the hydraulic main spring includes a pair of winglets located on both sides of the main body, and the pair of winglets are respectively arranged opposite to the pair of front support parts, and there is a gap between each winglet and the corresponding front support part.

9. The tie rod suspension assembly according to claim 5, characterized in that: The hydraulic main spring assembly also includes a cover plate, a flow channel, a leather cup, a sealing bottom plate and a steel ball; the hydraulic main spring forms a main chamber, the cover plate, the flow channel, the leather cup and the sealing bottom plate are sequentially arranged on the front side of the main chamber, and the leather cup forms a sub-chamber; the rear side of the main chamber is provided with an injection hole connected to the outside, and the steel ball is arranged in the injection hole and seals the injection hole.

10. A vehicle, characterized in that: The invention comprises a tie rod suspension assembly according to any one of claims 1 to 9.

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