Tension wheel assembly for vehicle and vehicle having the same

Abstract

The present invention provides a tensioning wheel assembly applied to a vehicle and a vehicle having the same, wherein the tensioning wheel assembly comprises: a connecting arm; a tensioning wheel connected to a first end of the connecting arm, and the tensioning wheel can be rotatably arranged relative to the connecting arm; a base connected to a second end of the connecting arm; an idler wheel assembly, the idler wheel assembly is connected to the base, and the idler wheel assembly can be rotatably arranged relative to the base, the idler wheel assembly and the tensioning wheel are located on the same side, and a tensioning space for tensioning a conveyor belt is formed between the idler wheel assembly and the tensioning wheel. By applying the technical solution of the present invention, the idler wheel assembly is integrated on the tensioning wheel assembly, and the tensioning wheel assembly can simultaneously realize the tensioning function and the function of preventing the wheel system from slipping, abnormal noise and other problems. The automatic tensioning wheel of this solution occupies less space, and when used for arranging the engine wheel system, it can effectively reduce the space occupied by the wheel system arrangement, making the engine structure more compact.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle design and manufacturing, and in particular to a tension wheel assembly applied to a vehicle and a vehicle having the same. Background Art

[0002] Compact design has always been a key topic explored by all OEMs. Whether or not a part is compact not only affects the weight, material, and cost of the part itself, but also affects related systems and even the entire machine solution. Using compactly designed parts may make related systems more compact, thereby achieving better size, weight, and cost of the entire machine; conversely, it may lead to an increase in the size, weight, and cost of the entire machine.

[0003] For a car (engine) to operate normally, the crankshaft pulley at the front end of the engine usually drives several gear train accessories through belts. Common gear train accessories include water pumps, generators, air conditioning compressors, and some models may also have power steering pumps. The more gear train accessories there are and the larger the gear train accessories are, the more difficult it will be to arrange the gear train. Sometimes, several tensioner assemblies and idler pulleys are added between the gear train accessories. The tensioner assembly can provide continuous and stable tension for the belt, and the idler pulley can adjust the wrap angle of the pulley of a specific gear train accessory or change the layout direction of the gear train to ensure that the gear train does not have quality problems such as slipping and abnormal noise, so as to maintain the normal operation of the gear train. Since the engine's gear train is generally arranged at the front end of the engine, the compactness of the gear train layout may affect the size of the entire machine.

[0004] The existing tension wheel assembly can be roughly divided into a C-type tension wheel assembly and a Z-type tension wheel assembly according to the positional relationship between the base, the pulley and the tension arm. The tension wheel assembly in which the base and the pulley are located on the same side of the tension arm is defined as a C-type tension wheel assembly (such as Figure 1-1 As shown in Figure 2); For the tensioning wheel assembly where the base and pulley are located on the opposite side of the tensioning arm, it is defined as a Z-type tensioning wheel assembly (as shown in Figure 2). Figure 1-2 As shown). The length dimension L of the tension arm of the C-type tension wheel assembly (the distance between the center of the base and the center of the pulley) is generally larger, while the height dimension H is generally smaller; while the length dimension L of the tension arm of the Z-type tension wheel assembly (the distance between the center of the base and the center of the pulley) is generally smaller, while the height dimension H is generally larger.

[0005] In the same gear train layout, the tensioner assembly and the idler pulley generally require independent layout space. Since both are moving parts, a certain movement gap needs to be reserved between the two, which means that more layout space is required, which is not conducive to the compactness and lightweight of the gear train and the entire machine layout. Sometimes, due to layout space limitations, it may even limit the implementation of the plan.

[0006] Taking a certain vehicle model as an example, according to the cabin boundary restrictions and the technical characteristics of the whole machine, the possible layout positions of each gear train accessory are as follows: Figure 2 and Figure 3 As shown (facing the engine gear train): the crankshaft pulley 101 is located at the bottom of the engine, the water pump pulley 102 is located at the top of the engine, and the generator pulley 103 is located on the left side of the engine. Due to the boundary restrictions of the vehicle and the engine, the crankshaft pulley 101, the water pump pulley 102, and the generator pulley 103 cannot be further "closed". The crankshaft pulley 101 is connected to the water pump pulley 102 and the generator pulley 103 in sequence through the multi-V belt 104 to ensure that the power is transmitted from the crankshaft pulley 101 to the water pump pulley 102 and the generator pulley 103.

[0007] According to the feasible arrangement scheme, the span of the multi-V belt 104 between the water pump pulley 102 and the generator pulley 103 is about 350 mm or more. According to experience, in order to ensure that the water pump pulley 102 and the generator pulley 103 do not slip or make abnormal noise, and the multi-V belt 104 between the water pump pulley 102 and the generator pulley 103 does not have quality problems such as excessive vibration and abnormal noise, it is necessary to arrange an idler pulley assembly (including bearing 41 and idler pulley 42) between the water pump pulley 102 and the generator pulley 103; after the last gear train accessory, that is, between the generator pulley 103 and the crankshaft pulley 101, a tensioning pulley 20 needs to be arranged. The tensioning pulley 20 can continuously provide effective tensioning force for the multi-V belt 104 to ensure that the crankshaft pulley 101, the water pump pulley 102, the generator pulley 103, and the idler pulley 42 do not slip.

[0008] Due to the boundary restrictions of the vehicle and the engine, the tensioner 20 and the idler 42 cannot be arranged in area A and area B (for this example, area A is used to arrange the power steering pump, and area B is the movement space of the silicone oil shock absorber, and the tensioner assembly and the idler assembly cannot be arranged).

[0009] Based on the above gear train arrangement conditions, gear train arrangement scheme 1 uses a traditional C-type tensioner assembly, such as Figure 2 As shown in the figure: the axial space occupied by the traditional C-type tension wheel assembly is only the thickness of the ordinary tension wheel assembly (such as Figure 1-1 As shown in the figure, the occupied layout range is area D + area E. The tensioning wheel 20 and the idler wheel 42 occupy a larger layout range, which will be unfavorable for optimizing the layout positions of the tensioning wheel 20 and the idler wheel 42, and the optimal gear train design is often not obtained. Even in the application scenario, if the layout space of area D + area E cannot be simultaneously available, this gear train solution will not be implemented.

[0010] Based on the above gear train arrangement conditions, gear train arrangement scheme 2 uses a traditional Z-type tensioner assembly, such as Figure 3As shown in FIG. 1 , in region C, since the base (spring chamber) of the Z-type tensioning wheel assembly is in opposite directions to the C-type tensioning wheel assembly, theoretically, the arrangement region E of the idler wheel 42 and the arrangement region D of the tensioning wheel 20 can overlap within the projection range. Although the arrangement of the idler wheel 42 and the tensioning wheel 20 is relatively more flexible, this arrangement scheme will occupy a larger axial space (e.g., Figure 1-2 It is also not conducive to the compact design of the engine.

[0011] None of the above wheel arrangement methods can minimize the occupied space. In some vehicle models with greater space restrictions, none of the above wheel arrangement solutions are applicable. Summary of the invention

[0012] The main purpose of the present invention is to provide a tension wheel assembly applied to a vehicle and a vehicle having the same, so as to solve the problem in the prior art that the tension wheel assembly occupies a large space when arranged.

[0013] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a tensioning wheel assembly for use in a vehicle, comprising: a connecting arm; a tensioning wheel connected to a first end of the connecting arm and rotatably arranged relative to the connecting arm; a base connected to a second end of the connecting arm; an idler wheel assembly, the idler wheel assembly connected to the base and rotatably arranged relative to the base, the idler wheel assembly and the tensioning wheel are located on the same side, and a tensioning space for tensioning a conveyor belt is formed between the idler wheel assembly and the tensioning wheel.

[0014] Furthermore, the idler wheel assembly includes: a bearing, the bearing having a bearing inner ring and a bearing outer ring, the bearing inner ring is sleeved on the outer circumferential surface of the base, and a plurality of balls are arranged between the bearing inner ring and the bearing outer ring; an idler wheel, the inner circle of the idler wheel is sleeved on the bearing outer ring.

[0015] Furthermore, a first connecting hole is opened at the second end of the connecting arm, and a first annular protrusion is arranged on the surface of the connecting arm located on the side of the idler assembly, and the first annular protrusion is arranged coaxially with the first connecting hole. A second connecting hole is opened in the middle of the base, and the second connecting hole, the first annular protrusion and the first connecting hole are arranged coaxially. The base is connected to the connecting arm through a connecting piece, wherein the connecting piece is inserted into the first connecting hole, the first annular protrusion and the second connecting hole.

[0016] Furthermore, the base has a large diameter end and a small diameter end, the large diameter end is arranged toward one side of the connecting arm, and the small diameter end is arranged away from the side of the connecting arm, the outer surface of the small diameter end is connected to the idler assembly, a first accommodating cavity is arranged inside the large diameter end, a damping element is arranged in the first accommodating cavity, a second accommodating cavity is arranged in the small diameter end, and a spring is arranged in the second accommodating cavity, wherein the damping element and the spring are arranged circumferentially along the first annular protrusion.

[0017] Furthermore, a second annular protrusion is arranged in the small diameter end, the second annular protrusion, the second connecting hole and the first annular protrusion are arranged coaxially, and the spring is arranged along the circumference of the second annular protrusion.

[0018] Furthermore, the inner diameter of the first accommodating cavity is greater than the inner diameter of the second accommodating cavity.

[0019] Furthermore, an outer surface of a connection between the large diameter end and the small diameter end forms a limiting step surface, and a third annular protrusion is provided on the limiting step surface.

[0020] Furthermore, a limiting groove is provided on the outer surface of the small diameter end, a thrust plate is arranged in the limiting groove, and the idler wheel assembly is located on the inner side of the thrust plate.

[0021] Furthermore, the tensioning wheel assembly also includes: a bushing, which is arranged in the first connecting hole and the first annular protrusion.

[0022] According to another aspect of the present invention, a vehicle is provided, the vehicle includes the above-mentioned tensioner assembly, and the vehicle also includes: a crankshaft pulley, the crankshaft pulley is connected to the engine; a water pump pulley, the water pump pulley is connected to the engine, and the water pump pulley is located on one side of the crankshaft pulley; a generator pulley, the generator pulley is connected to the engine, and the generator pulley is located on the other side of the crankshaft pulley, the tensioner assembly is connected to the engine, and the tensioner assembly is located between the generator pulley and the water pump pulley; a conveyor belt, the conveyor belt passes through the crankshaft pulley, the water pump pulley, the idler pulley assembly of the tensioner assembly, the generator pulley and the tensioner of the tensioner assembly in sequence, and the conveyor belt passing between the water pump pulley and the generator pulley is located in the tensioning space, and the conveyor belt passing between the crankshaft pulley and the generator pulley is located in the tensioning space.

[0023] By applying the technical solution of the present invention, an idler wheel assembly is integrated on the tensioning wheel assembly, and the tensioning wheel assembly of this solution is applied to the engine gear train layout. The tensioning wheel assembly can simultaneously realize the tensioning function and the function of preventing the gear train from slipping, abnormal noise and other problems. The automatic tensioning wheel of this solution occupies a small space, and when used in the layout of the engine gear train, it can effectively reduce the space occupied by the gear train layout, making the engine structure more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary 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:

[0025] Figure 1-1 , Figure 1-2 The structural schematic diagrams of the tension wheel assembly in the prior art are respectively shown;

[0026] Figure 2The structure diagram of the gear train arrangement scheme 1 in the prior art is shown;

[0027] Figure 3 The structure diagram of the second gear train arrangement scheme in the prior art is shown;

[0028] Figure 4 A schematic structural diagram of a first embodiment of a tensioning wheel assembly according to the present invention is shown;

[0029] Figure 5 A cross-sectional structural schematic diagram of an embodiment of a tension wheel assembly according to the present invention is shown;

[0030] Figure 6 A schematic structural diagram of a second embodiment of a tensioning wheel assembly according to the present invention is shown;

[0031] Figure 7 A schematic cross-sectional view of an embodiment of a base according to the present invention is shown;

[0032] Figure 8 A schematic structural diagram of an embodiment of a bearing according to the present invention is shown;

[0033] Fig. 9 A schematic structural diagram of a third embodiment of a tensioning wheel assembly according to the present invention is shown.

[0034] The above drawings include the following reference numerals:

[0035] 10. connecting arm; 11. first connecting hole; 12. first annular protrusion;

[0036] 20. Tensioner;

[0037] 30, base; 31, second connecting hole; 32, large diameter end; 321, first accommodating cavity; 33, small diameter end; 331, second accommodating cavity; 332, second annular protrusion; 333, limiting groove; 34, limiting step surface; 341, third annular protrusion;

[0038] 40. Idler wheel assembly; 41. Bearing; 411. Bearing inner ring; 412. Bearing outer ring; 413. Ball; 42. Idler wheel;

[0039] 50, connecting piece; 60, damping piece; 70, spring; 80, thrust plate; 90, bushing;

[0040] 101. Crankshaft pulley; 102. Water pump pulley; 103. Generator pulley; 104. Multi-V belt. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0043] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application 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 terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. 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 that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0044] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0045] Combination Figures 4 to 9 As shown, according to a specific embodiment of the present application, a tensioning wheel assembly applied to a vehicle is provided.

[0046] The tensioning wheel assembly includes a connecting arm 10, a tensioning wheel 20, a base 30 and an idler wheel assembly 40. The tensioning wheel 20 is connected to a first end of the connecting arm 10 and is rotatably arranged relative to the connecting arm 10. The base 30 is connected to a second end of the connecting arm 10. The idler wheel assembly 40 is connected to the base 30 and is rotatably arranged relative to the base 30. The idler wheel assembly 40 and the tensioning wheel 20 are located on the same side of the connecting arm, and a tensioning space for tensioning the conveyor belt is formed between the idler wheel assembly 40 and the tensioning wheel 20.

[0047] By applying the technical solution of the present invention, an idler wheel assembly 40 is integrated on the tensioning wheel assembly, and the tensioning wheel assembly of the present solution is applied to the engine gear train layout. The tensioning wheel assembly can simultaneously realize the tensioning function and the function of preventing the gear train from slipping, abnormal noise and other problems. The automatic tensioning wheel of the present solution occupies less space, and when used for arranging the engine gear train, it can effectively reduce the space occupied by the gear train layout, making the engine structure more compact.

[0048] Among them, the conveyor belt includes a poly-V belt 104. In one embodiment of the present application, the conveyor belt can also be a belt, and the tensioning wheel 20 can be a pulley in an ordinary tensioning wheel. When the tensioning wheel 20 is connected to the first end of the connecting arm 10, a dust cover can also be set at the bottom of the tensioning wheel 20.

[0049] The idler assembly 40 includes a bearing 41 and an idler 42. The bearing 41 has a bearing inner ring 411 and a bearing outer ring 412. The bearing inner ring 411 is sleeved on the outer peripheral surface of the base 30. A plurality of balls 413 are arranged between the bearing inner ring 411 and the bearing outer ring 412. The idler 42 is sleeved on the bearing outer ring 412. Figure 8 As shown, in one embodiment of the present application, the bearing 41 is a conventional deep groove ball bearing. In order to prevent the contact and friction between the multiple balls 413 from affecting the bearing performance, a retainer is provided between the balls 413 to separate the multiple balls 413 so that there is a certain gap between the balls 413. In practical applications, the bearing 41 can be changed to other types of bearings according to actual needs. It should be noted that in the embodiment of the present application, the bearing inner ring 411 is installed on the corresponding structure of the base 30, and the bearing inner ring 411 and the corresponding structure of the base 30 can also be made into an integrated structure.

[0050] Specifically, the second end of the connecting arm 10 is provided with a first connecting hole 11, and a first annular protrusion 12 is provided on the surface of the connecting arm 10 located on the side of the idler assembly 40, and the first annular protrusion 12 is coaxially arranged with the first connecting hole 11. A second connecting hole 31 is provided in the middle of the base 30, and the second connecting hole 31, the first annular protrusion 12, and the first connecting hole 11 are coaxially arranged. The base 30 is connected to the connecting arm 10 through a connecting member 50, wherein the connecting member 50 is inserted into the first connecting hole 11, the first annular protrusion 12, and the second connecting hole 31. Figure 4 As shown, in one embodiment of the present application, the connecting member 50 is a pin shaft, and the second connecting hole 31, the first annular protrusion 12, and the first connecting hole 11 are coaxially arranged to facilitate the connection between the idler assembly 40 and the base 30 and the connecting arm 10, and to reduce the volume of the tensioning wheel assembly, occupying the smallest layout space.

[0051] Specifically, the base 30 has a large diameter end 32 and a small diameter end 33. The large diameter end 32 is arranged toward the connecting arm 10, and the small diameter end 33 is arranged away from the connecting arm 10. The outer surface of the small diameter end 33 is connected to the idler assembly 40. The large diameter end 32 is provided with a first accommodating cavity 321, and the damping member 60 is arranged in the first accommodating cavity 321. The small diameter end 33 is provided with a second accommodating cavity 331, and the spring 70 is arranged in the second accommodating cavity 331. The damping member 60 and the spring 70 are arranged circumferentially along the first annular protrusion 12. Figure 4 As shown, the damping member 60 can effectively reduce shock, and the spring 70 can be used for energy compensation to achieve the tensioning function of the tensioning wheel assembly.

[0052] In one embodiment of the present application, in order to make the bearing 41 easier to install, a chamfer is provided at the lower end of the small diameter end 33 .

[0053] Furthermore, a second annular protrusion 332 is provided in the small diameter end 33, the second annular protrusion 332, the second connecting hole 31, and the first annular protrusion 12 are coaxially arranged, and the spring 70 is arranged circumferentially along the second annular protrusion 332. Figure 5 As shown, the spring 70 is arranged circumferentially along the second annular protrusion 332 so that the tensioning wheel assembly has a better tensioning effect.

[0054] Preferably, the inner diameter of the first accommodating cavity 321 is greater than the inner diameter of the second accommodating cavity 331. Figure 7 As shown, such a configuration can facilitate the arrangement of the damping member 60 and the spring 70 .

[0055] The outer surface of the connection between the large diameter end 32 and the small diameter end 33 forms a limited step surface 34, and a third annular protrusion 341 is formed on the limited step surface 34. Figure 5 As shown, in an embodiment of the present application, the limiting step surface 34 is used to position the bearing 41 axially toward the connecting arm 10, and the third annular protrusion 341 can achieve the sealing of the bearing 41. At the same time, there is a certain height difference between the end surface of the third annular protrusion 341 and the limiting step surface 34, so that after the bearing 41 is installed on the base 30, there is a gap between the end surface of the third annular protrusion 341 and the end surface of the bearing outer ring 412, ensuring that the bearing 41 will not interfere with the base 30 when moving. In one embodiment of the present application, the bearing 41 and the base 30 are coaxially installed. In actual applications, the bearing 41 and the base 30 can also be set to an eccentric structure.

[0056] Furthermore, a limiting groove 333 is provided on the outer surface of the small diameter end 33, and a thrust plate 80 is arranged in the limiting groove 333, and the idler assembly 40 is located on the inner side of the thrust plate 80. In one embodiment of the present application, the limiting step surface 34 is used to position the bearing 41 in the axial direction away from the connecting arm 10, and the thrust plate 80 and the limiting step surface 34 respectively position the bearing 41 from two directions, so that the bearing 41 is not prone to axial jump or displacement, ensuring that the bearing 41 is fixed on the base 30. In practical applications, other clamping mechanisms can also be used to position the bearing 41 axially.

[0057] Furthermore, the tension wheel assembly further includes a bushing 90, which is disposed in the first connecting hole 11 and the first annular protrusion 12. Figure 5 As shown, the bushing 90 can make the connection between the connector 50 and the base 30 more secure.

[0058] like Figure 4 As shown, a protrusion may be further provided on the surface of the connecting arm 10, and two limit blocks are protrudingly provided on the base 30, and the protrusion extends into the limit space between the two limit blocks, which can facilitate the limit and installation positioning of the tension wheel assembly.

[0059] The above-mentioned tension wheel assembly integrates an idler wheel on the basis of the original tension wheel, so that the idler wheel can rotate around the axis of the base 30. The tension wheel assembly can realize the tensioning function and the function of an ordinary idler wheel at the same time.

[0060] According to another specific embodiment of the present application, a vehicle is provided, the vehicle includes the above-mentioned tensioner assembly, and the vehicle also includes: a crankshaft pulley 101, the crankshaft pulley 101 is connected to the engine; a water pump pulley 102, the water pump pulley 102 is connected to the engine, and the water pump pulley 102 is located on one side of the crankshaft pulley 101; a generator pulley 103, the generator pulley 103 is connected to the engine, and the generator pulley 103 is located on the other side of the crankshaft pulley 101, the tensioner assembly is connected to the engine, and the tensioner assembly is located between the generator pulley 103 and the water pump pulley 102; a conveyor belt, the conveyor belt passes through the crankshaft pulley 101, the water pump pulley 102, the idler assembly 40 of the tensioner assembly, the generator pulley 103 and the tensioner 20 of the tensioner assembly in sequence, and the conveyor belt passing between the water pump pulley 102 and the generator pulley 103 is located in the tensioning space, and the conveyor belt passing between the crankshaft pulley 101 and the generator pulley 103 is located in the tensioning space. Fig. 9As shown, in one embodiment of the present application, according to the boundary restrictions of the vehicle cabin and the technical characteristics of the whole machine, area A needs to be used for arranging the power steering pump, area B is the movement space of the silicone oil shock absorber, and the area that can be used to arrange the automatic tensioner and the idler assembly is only area C. When the tensioner assembly in this scheme is applied to the wheel train layout of the vehicle, since the space occupied by the tensioner assembly in the axial direction is only the thickness of the ordinary automatic tensioner, and the layout range occupied is only area D, compared with other wheel train layout schemes with the same limited space in the prior art, the automatic tensioner assembly in this scheme occupies the minimum layout range and axial space, while realizing the tensioning function of the ordinary automatic tensioner and the function of the ordinary idler assembly, so that the structural layout of the vehicle is more compact and lightweight, and the manufacturing cost of the vehicle is effectively reduced.

[0061] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here 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" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here 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 invention.

[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 a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tension wheel assembly for a vehicle, characterized in that: include: Connecting arm (10); A tensioning wheel (20), the tensioning wheel (20) being connected to the first end of the connecting arm (10), and the tensioning wheel (20) being rotatably arranged relative to the connecting arm (10); A base (30), the base (30) being connected to the second end of the connecting arm (10); An idler wheel assembly (40), the idler wheel assembly (40) being connected to the base (30), the idler wheel assembly (40) being rotatably arranged relative to the base (30), the idler wheel assembly (40) and the tensioning wheel (20) being located on the same side, and a tensioning space for tensioning the conveyor belt is formed between the idler wheel assembly (40) and the tensioning wheel (20); A first connecting hole (11) is formed at the second end of the connecting arm (10), and a first annular protrusion (12) is provided on the surface of the connecting arm (10) located on one side of the idler wheel assembly (40); The base (30) has a large diameter end (32) and a small diameter end (33), wherein the large diameter end (32) is arranged toward one side of the connecting arm (10), and the small diameter end (33) is arranged away from the connecting arm (10), and the outer surface of the small diameter end (33) is connected to the idler assembly (40), and a first accommodating cavity (321) is arranged inside the large diameter end (32), and a damping member (60) is arranged inside the first accommodating cavity (321), and a second accommodating cavity (331) is arranged inside the small diameter end (33), and a spring (70) is arranged inside the second accommodating cavity (331), wherein the damping member (60) and the spring (70) are arranged along the circumference of the first annular protrusion (12).

2. The tension wheel assembly according to claim 1, characterized in that: The idler wheel assembly (40) comprises: A bearing (41), the bearing (41) comprising a bearing inner ring (411) and a bearing outer ring (412), the bearing inner ring (411) being sleeved on the outer peripheral surface of the base (30), and a plurality of balls (413) being arranged between the bearing inner ring (411) and the bearing outer ring (412); An idler wheel (42), the inner circle of which is sleeved on the outer ring of the bearing (412).

3. The tension wheel assembly according to claim 1, characterized in that: The first annular protrusion (12) is coaxially arranged with the first connecting hole (11); a second connecting hole (31) is opened in the middle of the base (30); the second connecting hole (31), the first annular protrusion (12) and the first connecting hole (11) are coaxially arranged; the base (30) is connected to the connecting arm (10) via a connecting piece (50); wherein the connecting piece (50) is inserted into the first connecting hole (11), the first annular protrusion (12) and the second connecting hole (31).

4. The tension wheel assembly according to claim 3, characterized in that: A second annular protrusion (332) is arranged inside the small diameter end (33); the second annular protrusion (332), the second connecting hole (31), and the first annular protrusion (12) are coaxially arranged; and the spring (70) is arranged circumferentially along the second annular protrusion (332).

5. The tension wheel assembly according to claim 1, characterized in that: The inner diameter of the first accommodating cavity (321) is greater than the inner diameter of the second accommodating cavity (331).

6. The tension wheel assembly according to claim 1, characterized in that: The outer surface of the connection between the large diameter end (32) and the small diameter end (33) forms a limiting step surface (34), and a third annular protrusion (341) is provided on the limiting step surface (34).

7. The tension wheel assembly according to claim 1, characterized in that: A limiting groove (333) is provided on the outer surface of the small diameter end (33), a thrust plate (80) is arranged in the limiting groove (333), and the idler wheel assembly (40) is located on the inner side of the thrust plate (80).

8. The tension wheel assembly according to claim 3, characterized in that: The tension wheel assembly also includes: A bushing (90), wherein the bushing (90) is arranged in the first connecting hole (11) and the first annular protrusion (12).

9. A vehicle, characterized in that: The vehicle comprises the tension wheel assembly according to any one of claims 1 to 8, and the vehicle further comprises: A crankshaft pulley (101), wherein the crankshaft pulley (101) is connected to the engine; A water pump pulley (102), the water pump pulley (102) is connected to the engine, and the water pump pulley (102) is located on one side of the crankshaft pulley (101); A generator pulley (103), the generator pulley (103) is connected to the engine, the generator pulley (103) is located on the other side of the crankshaft pulley (101), the tensioning wheel assembly is connected to the engine, the tensioning wheel assembly is located between the generator pulley (103) and the water pump pulley (102); A conveyor belt, wherein the conveyor belt passes through the crankshaft pulley (101), the water pump pulley (102), the idler pulley assembly (40) of the tensioning pulley assembly, the generator pulley (103) and the tensioning pulley (20) of the tensioning pulley assembly in sequence, and the conveyor belt passing between the water pump pulley (102) and the generator pulley (103) is located in the tensioning space, and the conveyor belt passing between the crankshaft pulley (101) and the generator pulley (103) is located in the tensioning space.

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