An assembly type automatic tensioning wheel

Abstract

The utility model relates to the technical field of tensioning wheel, especially to an assembly type automatic tensioning wheel, including shell part, the shell part includes the casing, the inside of casing is equipped with the rotation hole no.

Description

Technical Field

[0001] This utility model relates to the field of tensioning wheel technology, specifically to an assembly-type automatic tensioning wheel. Background Technology

[0002] The integrated automatic tensioner is an integrated engine belt tensioning device. Its core feature is that the tensioner body, bearings, spring damping mechanism and mounting bracket are pre-assembled into an independent module. During operation, it automatically compensates for belt slack caused by wear, temperature changes or load fluctuations through built-in springs or hydraulic mechanisms, maintaining constant tension and thus ensuring the stable operation of the timing system or accessory drive system.

[0003] Although the assembly-type automatic tensioner performs well in single-wheel system tensioning, current mainstream products all adopt a single-wheel structure, that is, each assembly contains only one tensioner. When the engine needs to tension two independent wheel systems at the same time, two independent assemblies must be installed. This will lead to significant installation space redundancy in the space-constrained front-end layout of the engine, exacerbating the layout difficulty. Therefore, based on the above problems, an assembly-type automatic tensioner is proposed. Utility Model Content

[0004] The purpose of this invention is to provide an assembly-type automatic tensioning wheel to solve the problem that tensioning multiple wheel systems under limited engine compartment space requires the installation of two independent assemblies, which leads to significant installation space redundancy and increases layout difficulty.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An automatic tensioning wheel assembly includes a housing portion, the housing portion comprising a casing, an inner side of which has a transversely penetrating rotating hole, and a ring groove at the left end face of the casing. A tensioning arm is mounted on the housing portion, the tensioning arm comprising a rotating ring rotatably connected to the ring groove, a turntable fixedly connected to the left side of the rotating ring, and a rotating arm fixedly connected to the rear side of the turntable. A stepped hole with a transversely penetrating pattern is formed at the rear end of the rotating arm, and a [missing information - likely a component or element] is fixedly connected to the inner side of the hole on the turntable. A through sleeve is provided, with a spring-type mainspring fixedly connected to the outer side of the through sleeve via a connector. The outer end of the spring-type mainspring is fixedly connected to the inner wall of the housing via a connector. An outer pulley is installed at one end of the tensioning arm. The outer pulley includes a limiting rotating component that is rotatably connected to a stepped hole. A wheel body is fixedly connected to the left end of the limiting rotating component. A storage groove with a left opening is opened on the inner side of the wheel body. A tensioning arm is installed at the housing part, and an inner pulley located in the storage groove is rotatably connected to the rear side of the tensioning arm.

[0006] Preferably, the tensioning arm two includes a rotating body rotatably connected to the rotating hole one. A damping block is fixedly connected to the right side of the rotating body, and a column block located inside the housing is fixedly connected to the left side of the rotating body. A second spring is fixedly connected to the outer side of the column block via a connector. The outer end of the second spring is fixedly connected to the inner wall of the housing via a connector. A guide rod located inside the through sleeve is fixedly connected to the left side of the column block. A threaded groove with a left-opening opening is opened on the inner side of the guide rod. A sliding connection is made to the outer side of the guide rod. The guide sleeve inside the through sleeve has a rotating arm two fixedly connected to the left end of the guide sleeve, which is located to the left of the outer pulley. The guide sleeve has a rotating hole two through which the rotating arm two passes. A threaded rod is rotatably connected to the inner side of the rotating hole two, and the threaded rod and the threaded groove are threadedly connected. A damping washer is fixedly connected to the left end of the threaded rod, and a rotating block is fixedly connected to the left side of the damping washer. The inner pulley includes a limiting rotating rod that is rotatably connected to the rear end hole of the rotating arm two. A wheel body two is fixedly connected to the right end of the limiting rotating rod.

[0007] Preferably, the right side of the housing has a plurality of bolt grooves arranged at equal angles, the damping block is disposed inside the first rotating hole, and the right end face of the damping block is located to the left of the right end face of the housing.

[0008] Preferably, the guide rod is a square rod structure, the inner side of the guide sleeve is provided with a square channel, and the inner wall of the guide sleeve is in contact with the outer end face of the guide rod.

[0009] Preferably, the right end face of the damping pad is in contact with the left end face of the second rotating arm, a gap is provided between the outer end face of the guide sleeve and the inner wall of the through sleeve, a damping sleeve one is sleeved in the groove of the first wheel body, and a damping sleeve two is sleeved in the groove of the second wheel body.

[0010] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the shell, tensioning arm one, outer pulley, tensioning arm two, and inner pulley are designed to support tensioning arm one and tensioning arm two. Tensioning arm one applies tension to the outer pulley, and tensioning arm two applies tension to the inner pulley. The inner pulley can be stored inside the outer pulley, thus realizing the tensioning function of the assembly-type automatic tensioning wheel for two independent pulley systems. This significantly reduces the space required for the traditional dual tensioning wheel scheme, i.e., installing two independent assemblies. It solves the problem that under the limited space of the engine compartment, tensioning multiple pulley systems requires the installation of two independent assemblies, which leads to significant installation space redundancy and increases layout difficulty. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This utility model Figure 1Another perspective structural diagram; Figure 3 This utility model Figure 2 A schematic diagram of the cross-sectional structure; Figure 4 This is a cross-sectional structural diagram of the shell portion of this utility model; Figure 5 This is a schematic diagram of the disassembled structure of the tension arm and the outer pulley of this utility model; Figure 6 This is a schematic diagram of the structure of the outer pulley of this utility model; Figure 7 This is a schematic diagram of the tensioning arm 2 and the inner pulley of this utility model; Figure 8 This is a schematic diagram of the split structure of the tension arm II of this utility model; Figure 9 This utility model Figure 8 A schematic diagram of the structure at point A; Figure 10 This is a schematic diagram of the internal pulley structure of this utility model.

[0012] In the diagram: 1. Shell; 11. Shell; 12. Rotary hole one; 13. Bolt groove; 14. Ring groove; 2. Tensioning arm one; 21. Turntable; 22. Rotary arm one; 23. Stepped hole; 24. Rotary ring; 25. Through sleeve; 26. Mainspring one; 3. Outer pulley; 31. Limiting rotating part; 32. Wheel body one; 33. Damping sleeve one; 34. Storage groove; 4. Tensioning arm two; 401. Rotating body; 402. Damping block; 403. Column block; 404. Mainspring two; 405. Guide rod; 406. Threaded groove; 407. Guide sleeve; 408. Rotary arm two; 409. Rotary hole two; 410. Threaded rod; 411. Rotating block; 412. Damping washer; 5. Inner pulley; 51. Limiting rotating rod; 52. Wheel body two; 53. Damping sleeve two. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0015] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0016] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0017] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0018] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0019] Please see Figure 1-10 This utility model provides a technical solution: An automatic tensioning pulley assembly includes a housing 1, which includes a housing 11. A transversely penetrating rotating hole 12 is formed on the inner side of the housing 11. An annular groove 14 is formed at the left end face of the housing 11. A tensioning arm 2 is mounted on the housing 1. The tensioning arm 2 includes a rotating ring 24 rotatably connected to the annular groove 14. A turntable 21 is fixedly connected to the left side of the rotating ring 24. A rotating arm 22 is fixedly connected to the rear side of the turntable 21. A transversely penetrating stepped hole 23 is formed at the rear end of the rotating arm 22. A step is fixedly connected to the inner side of the hole in the turntable 21. A through sleeve 25 is fixedly connected to a spring 26 via a connector on its outer side. The outer end of the spring 26 is fixedly connected to the inner wall of the housing 11 via a connector. An outer pulley 3 is installed at the tension arm 2. The outer pulley 3 includes a limiting rotating part 31 that is rotatably connected to the stepped hole 23. A wheel body 32 is fixedly connected to the left end of the limiting rotating part 31. A storage groove 34 with a left opening is opened on the inner side of the wheel body 32. A tension arm 4 is installed at the housing 1. An inner pulley 5 located in the storage groove 34 is rotatably connected to the rear side of the tension arm 4.

[0020] Tensioning arm 2 4 includes a rotating body 401 rotatably connected to rotating hole 12. A damping block 402 is fixedly connected to the right side of rotating body 401. A column block 403 located inside housing 11 is fixedly connected to the left side of rotating body 401. A spring spring 2 404 is fixedly connected to the outer side of column block 403 via a connector. The outer end of spring spring 2 404 is fixedly connected to the inner wall of housing 11 via a connector. A guide rod 405 located inside through sleeve 25 is fixedly connected to the left side of column block 403. A threaded groove 406 with a left opening is opened on the inner side of guide rod 405. A guide sleeve 407 located inside through sleeve 25 is slidably connected to the outer side of guide rod 405. The left end of guide sleeve 407 is fixedly connected to... The rotating arm 408, located to the left of the outer pulley 3, has a rotating hole 409 on the inner side of the guide sleeve 407, through which the rotating arm 408 passes. A threaded rod 410 is rotatably connected to the inner side of the rotating hole 409, and the threaded rod 410 is threadedly connected to the threaded groove 406. A damping pad 412 is fixedly connected to the left end of the threaded rod 410, and a rotating block 411 is fixedly connected to the left side of the damping pad 412. The inner pulley 5 includes a limiting rotating rod 51 rotatably connected to the rear end hole of the rotating arm 408. A wheel body 52 is fixedly connected to the right end of the limiting rotating rod 51. The tensioning arm 4 can be adjusted in size as needed to adjust the displacement and tension of the inner pulley 5. Arm 2 4 can apply tension to the inner pulley 5; several equally angled bolt grooves 13 are provided on the right side of the housing 11, which allows the housing 1 to be fixed to the engine body. The damping block 402 is located inside the rotating hole 12, and the right end face of the damping block 402 is located to the left of the right end face of the housing 11. This arrangement can prevent the damping block 402 from contacting the engine body and prevent the damping block 402 from affecting the rotation of the rotating body 401 and the column block 403 without human interference; the guide rod 405 is a square rod structure, and the inner side of the guide sleeve 407 is provided with a square channel. The inner wall of the guide sleeve 407 fits against the outer end face of the guide rod 405. This arrangement allows the guide rod 405 to be fixed to the engine body. 5 can guide the guide sleeve 407, and the rotation of the guide sleeve 407 will drive the guide rod 405 to rotate together; the right end face of the damping pad 412 is in contact with the left end face of the rotating arm 408. Through this setting, damping can be applied to the rotating block 411 and the threaded rod 410, so that the rotating block 411 and the threaded rod 410 will not rotate on their own. There is a gap between the outer end face of the guide sleeve 407 and the inner wall of the through sleeve 25. Through this setting, the rotation of the guide sleeve 407 is not interfered with by the through sleeve 25. The groove of the wheel body 32 is fitted with the damping sleeve 33, and the groove of the wheel body 52 is fitted with the damping sleeve 53. Through this setting, the outer pulley 3 and the inner pulley 5 are prevented from slipping with the belt.

[0021] Workflow: The operation of the assembly-type automatic tensioner is as follows: When only the first independent pulley system needs to be tensioned, the operator first aligns the housing 1 of the tensioner assembly with the pre-set bolt holes on the engine block through its bolt groove 13, and uses bolts of the corresponding specifications to rigidly fix the housing 1; then, by manually rotating the rotating arm 22, turntable 21, and sleeve 25 of the tensioning arm 2, the built-in spring 26 undergoes elastic deformation and stores potential energy, at which point the tensioning arm 2 obtains continuous tension force; at the same time, the rotational movement of the rotating arm 22 synchronously drives the outer pulley 3 to displace until the outer edge of the outer pulley 3 is aligned with the first independent pulley system. The belts of the independent pulley system are in close contact, forcing the belts to form a stable fit with the damping sleeve 33. At this point, relying on the constant tension provided by the tensioning arm 2 and the mechanical support of the outer pulley 3, the belt of the first independent pulley system is reliably tensioned. When tensioning the second independent pulley system is required, the operator must press the damping block 402 with their fingers before fixing the housing 1 to lock the rotational degrees of freedom of the rotating body 401, the column block 403, and the guide rod 405. Then, by rotating the rotating block 411, the threaded rod 410 is driven to rotate. Utilizing the helical transmission relationship between the threaded rod 410 and the threaded groove 406, the threaded rod 410 is translated axially to the left. This translational movement... Further guide sleeve 407, rotating arm 408, and inner pulley 5 are guided to the left along guide rod 405 until inner pulley 5 completely disengages from receiving groove 34 and reaches the belt position of the second independent pulley system; at this time, stop the rotation of threaded rod 410 and release damping block 402. Rotate rotating arm 408 to drive guide sleeve 407, guide rod 405, column block 403, rotating body 401, and damping block 402 to rotate synchronously. The rotation of column block 403 causes spring 404 to undergo elastic deformation and store potential energy, thereby giving tension arm 4 continuous tension; at the same time, the rotation of rotating arm 408 drives inner pulley 5 to displace until inner pulley 5... The outer edge of pulley 5 is in close contact with the belt of the second independent pulley system, forcing the belt to form a stable fit with the damping sleeve 53. At this point, relying on the constant tension provided by the tensioning arm 4 and the mechanical support of the inner pulley 5, the belt of the second independent pulley system is also reliably tensioned. Through the above operations, the equipment of this application successfully realizes the tensioning function of the assembly-type automatic tensioning pulley for two independent pulley systems, significantly reducing the space required for the traditional double tensioning pulley scheme, i.e., installing two independent assemblies. It solves the problem that under the limited space of the engine compartment, the tensioning of multiple pulley systems requires the installation of two independent assemblies, which leads to significant installation space redundancy and exacerbates the layout difficulty.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An assembly-type automatic tensioner, comprising a housing (1), characterized in that: The shell part (1) includes a shell (11), and a rotating hole (12) is provided on the inner side of the shell (11) in a transversely through manner. An annular groove (14) is provided on the left end face of the shell (11). A tensioning arm (2) is installed on the shell part (1). The tensioning arm (2) includes a rotating ring (24) rotatably connected to the annular groove (14). A turntable (21) is fixedly connected to the left side of the rotating ring (24). A rotating arm (22) is fixedly connected to the rear side of the turntable (21). A stepped hole (23) is provided on the rear end of the rotating arm (22) in a transversely through manner. A through sleeve (25) is fixedly connected to the inner side of the hole of the turntable (21). A spring spring (26) is fixedly connected to the outer side of the sleeve (25) via a connector. The outer end of the spring spring (26) is fixedly connected to the inner wall of the housing (11) via a connector. An outer pulley (3) is installed at the tension arm (2). The outer pulley (3) includes a limiting rotating part (31) that is rotatably connected to the stepped hole (23). A wheel body (32) is fixedly connected to the left end of the limiting rotating part (31). A storage groove (34) with a left opening is opened on the inner side of the wheel body (32). A tension arm (4) is installed at the shell part (1). An inner pulley (5) located in the storage groove (34) is rotatably connected to the rear side of the tension arm (4).

2. The automatic tensioning wheel assembly according to claim 1, characterized in that: The tensioning arm 2 (4) includes a rotating body (401) rotatably connected to the rotating hole 1 (12). A damping block (402) is fixedly connected to the right side of the rotating body (401). A column block (403) located inside the housing (11) is fixedly connected to the left side of the rotating body (401). A spring spring 2 (404) is fixedly connected to the outer side of the column block (403) via a connector. The outer end of the spring spring 2 (404) is fixedly connected to the inner wall of the housing (11) via a connector. A guide rod (405) located inside the through sleeve (25) is fixedly connected to the left side of the column block (403). A threaded groove (406) with a left opening is opened on the inner side of the guide rod (405). A sliding connection is made to the outer side of the guide rod (405) located inside the through sleeve (25). The guide sleeve (407) has a rotating arm (408) fixedly connected to the left end of the guide sleeve (407) on the left side of the outer pulley (3). The inner side of the guide sleeve (407) has a rotating hole (409) through which the rotating arm (408) passes. The inner side of the rotating hole (409) is rotatably connected to a threaded rod (410), and the threaded rod (410) and the threaded groove (406) are threadedly connected. The left end of the threaded rod (410) is fixedly connected to a damping pad (412), and the left side of the damping pad (412) is fixedly connected to a rotating block (411). The inner pulley (5) includes a limiting rotating rod (51) rotatably connected to the rear end hole of the rotating arm (408), and the right end of the limiting rotating rod (51) is fixedly connected to a wheel body (52).

3. The automatic tensioning wheel assembly according to claim 2, characterized in that: The right side of the housing (11) is provided with several bolt grooves (13) arranged at equal angles. The damping block (402) is located inside the rotating hole (12). The right end face of the damping block (402) is located to the left of the right end face of the housing (11).

4. The automatic tensioning wheel assembly according to claim 2, characterized in that: The guide rod (405) has a square rod structure, and the inner side of the guide sleeve (407) is provided with a square channel. The inner wall of the guide sleeve (407) is in contact with the outer end face of the guide rod (405).

5. The automatic tensioning wheel assembly according to claim 2, characterized in that: The right end face of the damping pad (412) is in contact with the left end face of the second rotating arm (408). A gap is provided between the outer end face of the guide sleeve (407) and the inner wall of the through sleeve (25). The first damping sleeve (33) is sleeved in the groove of the first wheel body (32), and the second damping sleeve (53) is sleeved in the groove of the second wheel body (52).

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