Rear suspension structure for engine and vehicle

Abstract

The utility model provides a rear suspension structure for an engine and a vehicle, the rear suspension structure comprises a suspension framework, a first end of the suspension framework is provided with a suspension main spring assembly, the suspension main spring assembly comprises a main spring outer pipe, a main spring inner core is arranged in the main spring outer pipe, main spring rubber is arranged between the main spring outer pipe and the main spring inner core in a vulcanization mode, and the main spring outer pipe and the main spring inner core are in a vulcanization mode. The main spring rubber comprises a ring-shaped rubber body, and a limiting device is arranged on the rubber body so as to limit displacement and / or torsional displacement of the engine in the vehicle length direction. The suspension main spring assembly is arranged at the first end of the suspension framework, and a plurality of limiting devices are arranged on one side of the rubber main body of the suspension main spring assembly, so that the torsion displacement of an engine can be limited, the effect of eliminating abnormal sound is achieved, the overall weight is effectively reduced under the condition of meeting the strength and modality of the whole vehicle, and the service life of the vehicle is prolonged. And light-weight arrangement of the suspension structure is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of suspension structures of power assemblies, and in particular to a rear suspension structure for an engine and a vehicle. Background Art

[0002] In recent years, competition in the automotive industry has become increasingly fierce. To enhance product competitiveness, OEMs have continuously improved vehicle quality while also reducing product costs. Existing main springs for engine suspension cannot limit the displacement of the engine in multiple directions. Summary of the invention

[0003] In view of this, the utility model aims to provide a rear suspension structure for an engine and a vehicle, so as to solve the problems in the prior art that the main suspension spring cannot limit the displacement of the engine in multiple directions, cannot be disassembled separately, and has high mold manufacturing and processing costs.

[0004] One aspect of an embodiment of the utility model provides a rear suspension structure for an engine, comprising a suspension frame, a suspension main spring assembly being arranged at the first end of the suspension frame, the suspension main spring assembly comprising a main spring outer tube, a main spring inner core being arranged inside the main spring outer tube, a main spring rubber being vulcanized between the main spring outer tube and the main spring inner core, the main spring rubber comprising a ring-shaped rubber body, a plurality of limit devices being arranged on one side of the rubber body to limit the torsional displacement of the engine.

[0005] In some embodiments, an inner core protrusion is provided on the inner core of the main spring, and a first limiting protrusion and a second limiting protrusion are provided on one side of the rubber body, and the first limiting protrusion and the second limiting protrusion are respectively located on both sides of the inner core protrusion.

[0006] In some embodiments, a first limit block and a second limit block are respectively disposed at the first end and the second end of the rubber body, and the displacement of the engine in the length direction of the vehicle is limited by the first limit block and the second limit block.

[0007] In some embodiments, a third limiting protrusion is further provided at the second end of the rubber body, which is used to perform auxiliary limiting on the basis of limiting by the second limiting block.

[0008] In some embodiments, the suspension skeleton includes a main body, a through hole is set at the first end of the main body, a mounting plate is set around the through hole, a connecting piece is set on the end surface of the mounting plate, and the suspension main spring assembly is set in the space surrounded by the mounting plate through the connecting piece.

[0009] In some embodiments, a suspension sleeve assembly is disposed at the second end of the suspension skeleton.

[0010] In some embodiments, a sleeve is provided at the second end of the suspension skeleton, the suspension sleeve assembly is provided in the sleeve, the suspension sleeve assembly includes a sleeve outer tube, a sleeve inner core is provided in the sleeve outer tube, and a sleeve rubber is vulcanized between the sleeve outer tube and the sleeve inner core.

[0011] In some embodiments, the suspension frame is formed by welding two identical plate structures.

[0012] In some embodiments, at least one weight-reducing hole is provided on the plate-like structure and / or a flange structure is provided at the edge of the plate-like structure.

[0013] One aspect of an embodiment of the utility model provides a vehicle, comprising an engine and any one of the above-mentioned rear suspension structures.

[0014] The utility model arranges a suspension main spring assembly at the first end of the suspension frame and arranges a plurality of limit devices on one side of the rubber body of the suspension main spring assembly, which can not only limit the torsional displacement of the engine but also eliminate abnormal noise. Under the condition of meeting the strength and modal requirements of the entire vehicle, the overall weight is effectively reduced, which is convenient for the lightweight setting of the suspension structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings.

[0016] In the drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar parts. The drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the disclosed embodiments. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method. The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 It is a structural schematic diagram of the rear suspension structure of an embodiment of the utility model;

[0018] Figure 2 It is a plan view of the rear suspension structure of an embodiment of the utility model;

[0019] Figure 3It is a structural schematic diagram of a suspension frame in a rear suspension structure of an embodiment of the utility model;

[0020] Figure 4 It is a plan view of the suspension frame in the rear suspension structure of the embodiment of the utility model

[0021] Figure 5 It is a structural schematic diagram of a plate-like structure of a suspension frame in a rear suspension structure of an embodiment of the utility model;

[0022] Figure 6 It is a structural schematic diagram of a suspension main spring assembly in a rear suspension structure of an embodiment of the utility model;

[0023] Figure 7 It is a plan view of a suspension main spring assembly in a rear suspension structure of an embodiment of the utility model;

[0024] Figure 8 It is a structural schematic diagram of a suspension sleeve assembly in a rear suspension structure of an embodiment of the utility model.

[0025] The above drawings include the following reference numerals:

[0026] 1-suspension skeleton; 1a-plate structure; 11-main body; 12-through hole; 13-mounting plate; 131-connector; 14-weight reduction hole; 15-flange structure; 16-sleeve; 2-suspension main spring assembly; 21-main spring outer tube; 22-main spring inner core; 221-inner core protrusion; 23-main spring rubber; 231-rubber main body; 232-first limit block; 233-second limit block; 234-first limit protrusion; 235-second limit protrusion; 236-third limit protrusion; 3-suspension shaft sleeve assembly; 31-sleeve outer tube; 32-sleeve inner core; 33-sleeve rubber. DETAILED DESCRIPTION

[0027] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings, but are not intended to limit the present invention.

[0028] It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the above description should not be considered as limiting, but only as an example of an embodiment. Other modifications within the scope and spirit of the utility model will occur to those skilled in the art.

[0029] The accompanying drawings, which are included in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the general description of the present invention given above and the detailed description of the embodiments given below, are used to explain the principles of the present invention.

[0030] These and other characteristics of the invention will become apparent from the following description of a preferred form of embodiment given as a non-limiting example, with reference to the accompanying drawings.

[0031] It should also be understood that although the present invention has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present invention that have the features described in the claims and are therefore within the scope of protection defined thereby.

[0032] The above and other aspects, features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0033] Specific embodiments of the present invention are described hereinafter with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present invention, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that obscure the present invention. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use the present invention in a variety of ways with substantially any suitable detailed structure.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] This specification may use the phrases "in one embodiment", "in another embodiment", "in yet another embodiment" or "in other embodiments", all of which may refer to one or more of the same or different embodiments according to the present invention.

[0036] The first embodiment of the utility model provides a rear suspension structure for an engine, such as Figure 1-Figure 8As shown, the engine rear suspension structure is used to attenuate the vibration of a powertrain of an engine, for example, and includes a suspension frame 1, a suspension main spring assembly 2 is arranged at a first end of the suspension frame 1, and a suspension sleeve assembly 3 is arranged at a second end of the suspension frame 1 opposite to the first end, wherein the suspension main spring assembly 2 can be arranged in a first direction ( Figure 1 In the X direction), the vibration of the powertrain is attenuated and the amplitude is eliminated or reduced. The suspension sleeve assembly 3 can be Figure 1 The suspension frame 1 here serves as a mounting base for the suspension main spring assembly 2 and the suspension sleeve assembly 3, which can meet the strength and mode requirements of the entire vehicle. The X direction here refers to the length direction of the vehicle, and the Y direction refers to the width direction of the vehicle.

[0037] Specifically, Figure 3-Figure 5 As shown, the suspension frame 1 of this embodiment is formed by two plate-like structures through a welding process, and specifically, the suspension frame 1 is formed by welding two plate-like structures 1a with the same structure back to back.

[0038] Furthermore, each of the plate-like structures 1a constituting the suspension skeleton 1 is made of metal material, especially low-cost steel material, for example, it can be made by stamping process, so that a set of stamping dies can be used to make two plate-like structures 1a with the same structure through stamping process, and then the two plate-like structures 1a are welded together to form the suspension skeleton 1. In this way, the existing cast iron or cast aluminum process can be replaced by the existing steel plate material and the stamping process and welding process, thereby greatly reducing the manufacturing cost of the engine rear suspension structure through low material cost and process cost.

[0039] Furthermore, at least one weight-reducing hole 14 is provided on the plate-like structure 1a, and the weight-reducing hole 14 can facilitate improving the connection stability between the two plate-like structures 1a through a welding process.

[0040] In addition, a flange structure 15 is provided at the edge of the plate-like structure 1 a , and the overall strength of the suspension frame 1 can be improved by welding the two plate-like structures 1 a .

[0041] Further, the suspension skeleton 1 includes a main body 11, the first end of the main body 11 is provided with the suspension main spring assembly 2, and the second end of the main body 11 is provided with the suspension shaft sleeve assembly 3. The shape of the main body 11 here can be wider at one end to facilitate the installation of the suspension main spring assembly 2, and narrower at the other end to facilitate the installation of the suspension shaft sleeve assembly 3. The main body 11 here can be, for example, in a triangular shape.

[0042] Specifically, a through hole 12 is set at the first end of the main body 11, and a mounting plate 13 is set around the inner side of the through hole 12. The mounting plate 13 is set on the inner side of the through hole 12 through a welding process to increase the structural strength, and the suspension main spring assembly 1 is set in the mounting plate 13.

[0043] Furthermore, connecting members 131 are provided on both the upper end surface and the lower end surface of the mounting plate 13. For example, a plurality of connecting members 131 can be provided along the end surface of the mounting plate 13. The connecting member 111 here is provided toward the direction inside the through hole 12. For example, it adopts a T-shaped structure. The suspension main spring assembly 2 can be provided in the space surrounded by the mounting plate 13 through the connecting member 131, and fixedly connected to the suspension skeleton 1 through a riveting process. This not only facilitates the arrangement of the suspension main spring assembly 2 in the through hole 12 without causing the suspension main spring assembly 2 to fall out of the through hole 12 or produce abnormal noise, but also can solve the problems of large vulcanization mold and low single mold production efficiency caused by one-piece vulcanization.

[0044] According to the above embodiment, the engine rear suspension structure is provided with the weight-reducing hole 14, the flange structure 15 and the through hole 12, so that the weight of the suspension frame 1 can be effectively reduced while meeting the strength and modal conditions of the entire vehicle, thereby facilitating the lightweight setting of the suspension structure.

[0045] Furthermore, the main spring assembly 2 of the suspension here functions to attenuate the vibration of a powertrain such as an engine through the structure and eliminate or reduce the amplitude. Figure 6 and Figure 7 As shown, the suspended main spring assembly 2 includes a main spring outer tube 21, wherein the main spring outer tube 21 is riveted to the end face of the mounting plate 13, a main spring inner core 22 is arranged inside the main spring outer tube 21, and a main spring rubber 23 is arranged between the main spring outer tube 21 and the main spring inner core 22, wherein the main spring rubber 23 bonds the main spring inner core 22 and the main spring outer tube 21 to each other through a vulcanization process to form the suspended main spring assembly 2.

[0046] Preferably, the main spring inner core 22 in this embodiment is made of aluminum alloy, the main spring outer tube 21 is made of aluminum alloy, and the first rubber main spring 23 is made of natural rubber.

[0047] Furthermore, a sleeve 16 is provided at the second end of the suspension skeleton 1, wherein the sleeve 16 here can be, for example, a steel pipe, and the sleeve 16 is provided at the end of the suspension skeleton 1 through a welding process, and the suspension sleeve assembly 3 can be, for example, provided in the sleeve 16 by press-fitting and thus provided on the suspension skeleton 1.

[0048] Specifically, the suspension sleeve assembly 3 here adopts a cylindrical sleeve structure, and its function is to convert complex motion into single-direction motion through its torsional rigidity. Specifically, the suspension sleeve assembly 3 includes a sleeve outer tube 31, the sleeve outer tube 31 is pressed into the sleeve 16, a sleeve inner core 32 is arranged in the sleeve outer tube 31, and a sleeve rubber 33 is arranged between the sleeve outer tube 31 and the sleeve inner core 32. Here, the sleeve rubber 33 bonds the sleeve inner core 32 and the sleeve outer tube 31 to each other through a vulcanization process to form the suspension sleeve assembly 3.

[0049] Preferably, the sleeve inner core 32 is made of aluminum alloy or cast steel. Considering that cast steel is heavier, aluminum alloy is preferred. The sleeve outer tube 31 is made of aluminum alloy. The sleeve rubber 33 is made of natural rubber.

[0050] In some embodiments, considering that the main spring inner core 22 in the suspension main spring assembly 2 is a special-shaped structure, the main spring rubber 23 here also adopts a special-shaped structure, and a limiting device is provided on the main spring rubber 23 to limit the position of the main spring inner core 22.

[0051] like Figure 7 As shown, the main spring rubber 23 includes a rubber body 231 , which is ring-shaped, and the shape of its outer wall matches the shape of the inner wall of the main spring outer tube 21 , and the shape of its inner wall matches the shape of the outer wall of the main spring inner core 22 .

[0052] Further, the first end of the rubber body 231 and the second end opposite to the first end are respectively provided with a first limit block 232 and a second limit block 233, wherein the first limit block 232 and the second limit block 233 are respectively located at the two ends of the rubber body 1 to serve as limit blocks in the X direction, wherein the first end is, for example, the end of the rubber body 231 close to the front of the vehicle, and the second end is the end of the rubber body 231 close to the rear of the vehicle, and the X direction here refers to the length direction of the vehicle. Specifically, the first limit block 232 can play a limiting role when the vehicle starts or accelerates suddenly, that is, the displacement of the engine or other power assembly in the X direction is limited by the first limit block 232, and the second limit block 233 can play a limiting role when the vehicle brakes suddenly, that is, the displacement of the engine or other power assembly in the X direction is limited by the second limit block 233.

[0053] Furthermore, in order to limit the torsional displacement of a powertrain such as an engine, an inner core protrusion 221 is provided on the main spring inner core 22, and a first limiting protrusion 234 is also provided on the first end of the rubber body 231. The first limiting protrusion 234 and the inner core protrusion 221 can interfere with each other. In this way, when the first limiting block 232 cannot quickly limit the main spring inner core 22, the rubber limiting protrusion 234 can achieve auxiliary limiting of the main spring inner core 22, that is, the rubber limiting protrusion 234 and the inner core protrusion 221 interfere with each other to limit the main spring inner core 22, so that the displacement of the powertrain can be further attenuated and abnormal noise can be eliminated during the limiting process.

[0054] Furthermore, a second limiting protrusion 235 can be provided in the middle of the rubber body 231, and the second limiting protrusion 235 can also interfere with the inner core protrusion 221 of the main spring inner core 22. For example, the first limiting protrusion 234 and the second limiting protrusion 235 can be respectively located on both sides of the inner core protrusion 221 to enhance the limiting effect on the main spring inner core 22. Through the cooperation of the first limiting protrusion 234 and the second limiting protrusion 235 with the inner core protrusion 221, the torsional displacement of the engine and other power assemblies can be limited in an auxiliary manner when the vehicle makes extreme left and right turns.

[0055] Furthermore, a third limiting protrusion 236 is also provided at the second end of the rubber body 231. Here, the third limiting protrusion 236 can further realize auxiliary limiting on the basis of the limiting by the second limiting block 233. For example, when the vehicle brakes suddenly, the second limiting block 233 has contacted the limit position but the displacement of the powertrain still cannot be stopped, the third limiting protrusion 236 can realize structural auxiliary limiting, thereby further playing a role in eliminating abnormal noise and attenuating the displacement of the powertrain in the process of limiting the main spring inner core 22.

[0056] The main spring rubber 23 in the above embodiment can be increased on the basis of the structure of the original rubber body by adding an X-direction limiting structure and a torsion limiting structure to greatly limit the displacement of the powertrain of the vehicle under different working conditions, while avoiding interference and abnormal noise problems.

[0057] A second embodiment of the present utility model provides a vehicle, which comprises an engine and the engine rear suspension structure in any one of the above embodiments.

[0058] The utility model arranges a suspension main spring assembly at the first end of the suspension frame and arranges a plurality of limit devices on one side of the rubber body of the suspension main spring assembly, which can not only limit the torsional displacement of the engine but also eliminate abnormal noise. Under the condition of meeting the strength and modal requirements of the entire vehicle, the overall weight is effectively reduced, which is convenient for the lightweight setting of the suspension structure.

[0059] The serial numbers of the above-mentioned embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0060] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0061] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0062] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present utility model.

[0063] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0064] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A rear suspension structure for an engine, characterized in that: It includes a suspension frame, a suspension main spring assembly is arranged at the first end of the suspension frame, the suspension main spring assembly includes a main spring outer tube, a main spring inner core is arranged in the main spring outer tube, a main spring rubber is vulcanized and arranged between the main spring outer tube and the main spring inner core, the main spring rubber includes a ring-shaped rubber body, and a plurality of limit devices are arranged on one side of the rubber body to limit the torsional displacement of the engine.

2. The rear suspension structure according to claim 1, characterized in that: An inner core protrusion is arranged on the inner core of the main spring, and a first limiting protrusion and a second limiting protrusion are arranged on one side of the rubber body, wherein the first limiting protrusion and the second limiting protrusion are respectively located on both sides of the inner core protrusion.

3. The rear suspension structure according to claim 1, characterized in that: A first limit block and a second limit block are respectively disposed at the first end and the second end of the rubber body, and the displacement of the engine in the length direction of the vehicle is limited by the first limit block and the second limit block.

4. The rear suspension structure according to claim 3, characterized in that: The second end of the rubber body is further provided with a third limiting protrusion, which is used for auxiliary limiting on the basis of limiting by the second limiting block.

5. The rear suspension structure according to claim 1, characterized in that: The suspension frame includes a main body, a through hole is arranged at the first end of the main body, a mounting plate is arranged around the through hole, a connecting piece is arranged on the end surface of the mounting plate, and the suspension main spring assembly is arranged in the space surrounded by the mounting plate through the connecting piece.

6. The rear suspension structure according to claim 1, characterized in that: A suspension sleeve assembly is disposed at the second end of the suspension frame.

7. The rear suspension structure according to claim 6, characterized in that: A sleeve is arranged at the second end of the suspension frame, the suspension sleeve assembly is arranged in the sleeve, the suspension sleeve assembly comprises a sleeve outer tube, a sleeve inner core is arranged in the sleeve outer tube, and sleeve rubber is vulcanized and arranged between the sleeve outer tube and the sleeve inner core.

8. The rear suspension structure according to claim 1, characterized in that: The suspension frame is formed by welding two identical plate structures.

9. The rear suspension structure according to claim 8, characterized in that: At least one weight-reducing hole is arranged on the plate-like structure and / or a flange structure is arranged at the edge of the plate-like structure.

10. A vehicle, characterized in that: The invention comprises an engine and the rear suspension structure according to any one of claims 1 to 9.

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