A tensioning assembly for a motor vehicle drive system

Abstract

The present invention belongs to the technical field of transmission belt shock absorption, and is particularly concerned with a tensioning assembly for a motor vehicle drive system, wherein a mounting seat is used to support and fix a hollow positioning frame, a rotating disk cooperates with a direct-connecting plate to rotate a fine-tuning assembly, the hollow positioning frame is used to support a tensioning portion and a tensioning wheel, the fine-tuning assembly is used to intermittently drive the tensioning wheel to rotate, a driving shaft is used to connect a main wheel, the main wheel is used to sleeve the inner side of a narrow belt on the main wheel, the tensioning wheel is used to resist the narrow belt and tighten the narrow belt, the tensioning portion is used to fully absorb shock of the narrow belt during transmission, and the linear shaft and the auxiliary rotating bracket can be driven to intermittently rotate the rotating disk by directly rotating the rotating disk; the product adds multiple sets of leaf springs inside the hollow positioning frame to limit the movement of the rotating disk, and when one bevel rack of the limiting disk rotates to the angle of another adjacent bevel rack, the bent side of the outer leaf spring will once again resist the bevel rack, thereby completing the intermittent transmission effect of the product and preventing excessive rotation.

Description

Technical Field

[0001] The invention belongs to the technical field of transmission belt damping, and in particular relates to a tensioning assembly for a motor vehicle drive system. Background Art

[0002] The main function of the tensioning assembly of the motor vehicle drive system is to ensure that the connection between the various components in the drive system is tight and stable, and at the same time to compensate for the increase in component gaps caused by long-term use or environmental factors, thereby maintaining the normal operation of the vehicle. The tensioning assembly can ensure that transmission components such as transmission belts (such as timing belts, chains, etc.) or gears always maintain appropriate tension to prevent slipping or breakage due to looseness. By maintaining a tight connection between transmission components, it helps to improve the stability and reliability of the vehicle drive system.

[0003] Narrow belts are easily deformed due to their narrow width, which makes the tensioner take a long time to adjust. For the installation of the tensioner of a narrow belt, the existing device generally installs the tensioner at a suitable position in the movement direction of the chain or the transmission belt, and fixes the tensioner at this position with screws or other fasteners to prevent it from moving and maintain an appropriate tightness. Although this method is stable, the adjustment performance is average. On the other hand, when fine-tuning the position of the tensioner, it is necessary to use corresponding tools (such as wrenches, screwdrivers, etc.) to fine-tune until the ideal tightness is reached. Due to the tight structure inside the engine, the tool needs to be inserted into the interior to disassemble it and then fine-tune it, which undoubtedly increases the labor intensity.

[0004] Therefore, a tensioning assembly for a motor vehicle drive system is designed to solve the above problems. Summary of the invention

[0005] To solve the problems mentioned in the background technology, the present invention provides a tensioning assembly for a motor vehicle drive system to solve the problem of stable installation of a narrow belt and facilitate fine adjustment of a tensioning wheel, eliminating the process of disassembling the entire assembly.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a tensioning assembly for a motor vehicle drive system, comprising a disassembly-free tensioner, the disassembly-free tensioner comprising a mounting seat, a rotating disk, a direct-connecting plate, a hollow positioning frame, a driving shaft, a main wheel, a tensioning wheel and a fine-tuning assembly, the mounting seat is screwed to the outside of the motor vehicle engine by bolts, the rotating disk is slidably sleeved inside the mounting seat, the direct-connecting plate is fixedly connected to one side surface of the rotating disk, the hollow positioning frame is arranged on the outside of the mounting seat, the driving shaft is rotatably connected to the outside of the hollow positioning frame, the middle part of the main wheel is fixedly connected to the outside of the driving shaft, the tensioning wheel is mounted on the outside of the mounting seat, the fine-tuning assembly is arranged inside the hollow positioning frame, and a tensioning portion is also installed at one end of the tensioning wheel;

[0007] The mounting seat is used to support and fix the hollow positioning frame, the rotating disk cooperates with the direct connection plate to rotate the fine-tuning assembly, the hollow positioning frame is used to support the tensioning part and the tensioning wheel, the fine-tuning assembly is used to intermittently drive the tensioning wheel to rotate, the driving shaft is used to connect the main wheel, the main wheel is used to sleeve the inner side of the narrow belt on the main wheel, the tensioning wheel is used to resist the narrow belt and tighten the narrow belt, and the tensioning part is used to fully absorb the shock of the narrow belt during the transmission process.

[0008] Preferably, the fine-tuning assembly includes a limit plate, a linear shaft, a bevel rack and a leaf spring, the middle part of the limit plate is fixedly connected to the outer side of the linear shaft, the other side of the linear shaft is fixedly connected to the middle part of the rotating plate, the bevel rack annular array is on the outer side of the limit plate, and the leaf spring is fixedly connected to the inside of the hollow positioning frame to resist the bevel rack.

[0009] Preferably, the tensioning part includes an auxiliary rotating bracket, a movable shaft, a socket plate 1, a socket plate 2, a fixed rod and an adjusting rod, one end of the auxiliary rotating bracket is fixedly connected to the surface of the linear shaft, the movable shaft is slidably sleeved on the outside of the auxiliary rotating bracket, the socket plate 1 is installed on the outside of the movable shaft, the socket plate 2 is installed on one side of the tensioning wheel, the fixed rod is installed on the surface of the socket plate 1, and the adjusting rod is slidably connected to the inner side of the fixed rod for supporting the socket plate 1 and the socket plate 2.

[0010] Preferably, a compression spring and an air chamber damping rod are also provided inside the fixing rod, and the two sides of the compression spring are respectively fixedly connected to the opposite side surfaces of the socket plate 1 and the socket plate 2, and the air chamber damping rod is installed on the inner side of the compression spring to reduce vibration.

[0011] Preferably, a horizontal adjustment component is also provided on the other side of the auxiliary rotating bracket, and the horizontal adjustment component includes a sealing cover, a rotating handle, a threaded rod, a movable disk, a protrusion and a guide rod. The sealing cover is installed on the surface of the auxiliary rotating bracket, the outer side of the rotating handle is fixedly connected to one end of the threaded rod, the threaded rod passes through the interior of the sealing cover and is rotatably connected to the middle part of the movable disk, the other side of the movable disk is fixedly connected to the inner side of the movable shaft, the protrusion is fixedly connected to both sides of the movable disk, and the guide rod passes through the interior of the protrusion and is fixedly connected to the inner surface of the sealing cover.

[0012] Preferably, a through hole matching the size of the guide rod is also provided inside the protrusion.

[0013] Preferably, a circular groove whose size is larger than that of the direct connection plate is also provided on the outer side of the hollow positioning frame.

[0014] Preferably, a pin is also provided on the outer side of the mounting seat, and the pin is used to connect to the periphery of the engine of the motor vehicle.

[0015] Preferably, a thrust bearing is also installed at the connection between the movable disk and the threaded rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, during the fine-tuning process of the tensioning wheel, the product can directly rotate the rotating disk to drive the linear shaft and the auxiliary rotating bracket to drive the tensioning wheel to rotate intermittently, eliminating the process of disassembling the entire assembly and then fine-tuning, saving working time.

[0018] 2. In the present invention, multiple groups of leaf springs are added inside the hollow positioning frame to limit the movement of the rotating disk. When one bevel rack of the limiting disk rotates to the angle of another adjacent bevel rack, the bent side of the outer leaf spring will once again press against the bevel rack, completing the intermittent transmission effect of the product and preventing excessive rotation.

[0019] 3. In the present invention, by rotating the rotary handle, the movable shaft is adjusted in the Y-axis direction through the movable disk, so as to fine-tune the displacement of the tensioning wheel and enable it to contact with the narrow belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the back of the non-disassembly tensioner in the present invention;

[0023] Figure 3 It is a cross-sectional view of the hollow positioning frame of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the fine-tuning component in the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the circular groove in the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the compression spring and the air chamber damping rod in the present invention;

[0027] Figure 7 This is a cross-sectional effect diagram of the interior of the sealing cover in the present invention.

[0028] In the figure:

[0029] 1. Disassembly-free tensioner; 2. Mounting seat; 3. Rotating disk; 4. Direct connection plate; 5. Hollow positioning frame; 6. Driving shaft; 7. Main wheel; 8. Tensioning wheel; 9. Fine-tuning assembly; 10. Tensioning part; 11. Limiting disk; 12. Linear axis; 13. Bevel rack; 14. Leaf spring; 15. Auxiliary rotating bracket; 16. Movable shaft; 17. Socket plate 1; 18. Socket plate 2; 19. Fixed rod; 20. Adjusting rod; 21. Compression spring; 22. Air chamber damping rod; 23. Horizontal adjustment assembly; 24. Sealing cover; 25. Rotating handle; 26. Threaded rod; 27. Moving disk; 28. Bump; 29. ​​Guide rod; 30. Through hole; 31. Circular groove; 32. Pin shaft; 33. Thrust bearing; 34. Threaded plate; 35. Rubber pad. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figure 1-7 A tensioning assembly for a motor vehicle drive system shown in the figure comprises a disassembly-free tensioner 1, the disassembly-free tensioner 1 comprises a mounting seat 2, a rotating disk 3, a direct-connecting plate 4, a hollow positioning frame 5, a drive shaft 6, a main wheel 7, a tensioning wheel 8 and a fine-tuning assembly 9, the mounting seat 2 is screwed to the outside of the motor vehicle engine by bolts, the rotating disk 3 is slidably sleeved inside the mounting seat 2, the direct-connecting plate 4 is fixedly connected to one side surface of the rotating disk 3, the hollow positioning frame 5 is arranged on the outside of the mounting seat 2, the drive shaft 6 is rotatably connected to the outside of the hollow positioning frame 5, the middle part of the main wheel 7 is fixedly connected to the outside of the drive shaft 6, the tensioning wheel 8 is mounted on the outside of the mounting seat 2, the fine-tuning assembly 9 is arranged inside the hollow positioning frame 5, and a tensioning portion 10 is also installed at one end of the tensioning wheel 8;

[0032] The mounting seat 2 is used to support and fix the hollow positioning frame 5, the rotating disk 3 cooperates with the direct connecting plate 4 to rotate the fine-tuning component 9, the hollow positioning frame 5 is used to support the tensioning part 10 and the tensioning wheel 8, the fine-tuning component 9 is used to intermittently drive the tensioning wheel 8 to rotate, the driving shaft 6 is used to connect the main wheel 7, the main wheel 7 is used to sleeve the inner side of the narrow belt on the main wheel 7, the tensioning wheel 8 is used to resist the narrow belt and tighten the narrow belt, and the tensioning part 10 is used to fully reduce the shock of the narrow belt during the transmission process.

[0033] Place the mounting base 2 tightly against a suitable position on the periphery of the engine of the motor vehicle, penetrate the threaded plate 34 with bolts and fix the mounting base 2, then connect the main wheel 7 to the inner side of one end of the narrow belt, and assist the narrow belt to rotate through the driving shaft 6. During the fine-tuning process of the tensioning wheel 8, the product can directly rotate the rotating disk 3 to drive the linear shaft 12 and the auxiliary rotating bracket 15 to drive the tensioning wheel 8 to rotate intermittently, eliminating the process of fine-tuning after disassembling the entire assembly, saving working time.

[0034] The fine-tuning assembly 9 includes a limit plate 11, a linear shaft 12, a bevel rack 13 and a leaf spring 14. The middle part of the limit plate 11 is fixedly connected to the outer side of the linear shaft 12, and the other side of the linear shaft 12 is fixedly connected to the middle part of the rotating disk 3. The bevel rack 13 is arranged in a ring array on the outer side of the limit plate 11, and the leaf spring 14 is fixedly connected to the inside of the hollow positioning frame 5 to resist the bevel rack 13.

[0035] During the fine-tuning process, the person holds the rotating disk 3 with his hand, and the rubber pad 35 increases the surface friction with the hand to prevent slipping. Then the rotating disk 3 is rotated unidirectionally, and the rotating disk 3 drives the direct-connecting plate 4 to rotate. The direct-connecting plate 4 is connected to the limit plate 11, so that the limit plate 11 can drive the linear shaft 12 to rotate synchronously. A plurality of sets of bevel racks 13 are provided on the outer surface of the limit plate 11, and the four sides of the bevel racks 13 are in conflict with the bent surface of the leaf spring 14. When one bevel rack 13 of the limit plate 11 rotates to the angle of another adjacent bevel rack 13, the bent side of the outer leaf spring 14 will once again be against the adjacent bevel rack 13 under the elastic support, thereby limiting the movement of the rotating disk 3, completing the intermittent transmission effect of this product, and preventing excessive rotation.

[0036] The tensioning part 10 includes an auxiliary rotating bracket 15, a movable shaft 16, a socket plate 17, a socket plate 2 18, a fixed rod 19 and an adjusting rod 20. One end of the auxiliary rotating bracket 15 is fixedly connected to the surface of the linear shaft 12, the movable shaft 16 is slidably sleeved on the outside of the auxiliary rotating bracket 15, the socket plate 17 is installed on the outside of the movable shaft 16, the socket plate 2 18 is installed on one side of the tensioning wheel 8, the fixed rod 19 is installed on the surface of the socket plate 17, and the adjusting rod 20 is slidably connected to the inner side of the fixed rod 19 to support the socket plate 17 and the socket plate 2 18.

[0037] A compression spring 21 and an air chamber damping rod 22 are also provided inside the fixed rod 19. The two sides of the compression spring 21 are fixedly connected to the opposite side surfaces of the socket plate 1 17 and the socket plate 2 18 respectively. The air chamber damping rod 22 is installed on the inner side of the compression spring 21 to reduce vibration.

[0038] When the linear shaft 12 rotates intermittently, it will drive the auxiliary rotating bracket 15 on the outside to rotate synchronously, and the auxiliary rotating bracket 15 will drive the movable shaft 16 and the tensioning wheel 8 to rotate. During this process, since the compression spring 21 inside the fixed rod 19 is always in a compressed state, in conjunction with the adjusting rod 20, the compression spring 21 can always apply an outward force to the socket plate 18 and the tensioning wheel 8, so that the tensioning wheel 8 can ensure that the narrow belt always maintains appropriate tension to prevent slipping or breakage due to loosening. During this process, the air chamber damping rod 22 can absorb and disperse the impact energy from the road surface, thereby reducing the vibration of the vehicle and passengers.

[0039] A horizontal adjustment component 23 is also provided on the other side of the auxiliary rotating bracket 15. The horizontal adjustment component 23 includes a sealing cover 24, a rotating handle 25, a threaded rod 26, a movable disk 27, a protrusion 28 and a guide rod 29. The sealing cover 24 is installed on the surface of the auxiliary rotating bracket 15. The outer side of the rotating handle 25 is fixedly connected to one end of the threaded rod 26. The threaded rod 26 passes through the interior of the sealing cover 24 and is rotatably connected to the middle part of the movable disk 27. The other side of the movable disk 27 is fixedly connected to the inner side of the movable shaft 16. The protrusion 28 is fixedly connected to both sides of the movable disk 27. The guide rod 29 passes through the interior of the protrusion 28 and is fixedly connected to the inner surface of the sealing cover 24.

[0040] A through hole 30 matching the size of the guide rod 29 is also provided inside the projection 28 .

[0041] A circular groove 31 whose size is larger than that of the connecting plate 4 is also provided on the outer side of the hollow positioning frame 5 .

[0042] When the tensioning wheel 8 is fine-tuned along the Y-axis direction, the rotating handle 25 can be rotated, and the rotating handle 25 drives the threaded rod 26 to rotate, and the threaded rod 26 pushes the outer movable disk 27 to move inside the sealing cover 24, so that the outer movable shaft 16 can be pushed in the same direction; in this process, the guide rod 29 cooperates with the penetrating protrusion 28 to prevent the radial jump of the movable disk 27, thereby improving the stability of the movement of the movable shaft 16 and completing the fine-tuning in the Y-axis direction, so that the outer surface of the tensioning wheel 8 can be fully in contact with the narrow belt.

[0043] A pin shaft 32 is also provided on the outer side of the mounting seat 2, and the pin shaft 32 is used to connect to the periphery of the engine of the motor vehicle.

[0044] A thrust bearing 33 is also installed at the connection between the moving plate 27 and the threaded rod 26 .

[0045] The thrust bearing 33 allows the threaded rod 26 to transmit only axial force without transmitting torque when rotating. Installing the thrust bearing 33 between the threaded rod 26 and the movable plate 27 can ensure that the threaded rod 26 only generates axial thrust when rotating without causing the movable plate 27 to rotate.

[0046] Working principle: Place the mounting base 2 close to a suitable position on the periphery of the engine of the motor vehicle, penetrate the threaded plate 34 with bolts and fix the mounting base 2, then connect the main wheel to the inner side of one end of the narrow belt, and assist the narrow belt to rotate through the driving shaft 6. During the fine-tuning process, the person holds the rotating disk 3 with his hand, and the rubber pad 35 increases the surface friction with the hand to prevent slipping. Then, the rotating disk 3 is rotated in one direction, and the rotating disk 3 drives the direct-connecting plate 4 to rotate. The direct-connecting plate 4 is connected to the limit plate 11, so that the limit plate 11 can drive the linear shaft 12 to rotate synchronously, and the surrounding of the bevel rack 13 conflicts with the bent surface of the leaf spring 14. When one bevel rack 13 of the limit plate 11 rotates to the angle of another adjacent bevel rack 13, The bent side of the outer leaf spring 14 will once again rest against the adjacent bevel rack 13 under the support of elasticity, thereby limiting the movement of the rotating disk 3 and completing the intermittent transmission effect of this product. When the linear shaft 12 rotates intermittently, it will drive the outer auxiliary rotating bracket 15 to rotate synchronously. Since the compression spring 21 is always in a compressed state, the compression spring 21 can always apply an outward force to the socket plate 2 18 and the tensioning wheel 8, so that the tensioning wheel 8 can ensure that the narrow belt always maintains appropriate tension to prevent slipping or breakage due to looseness. In this process, the air chamber damping rod 22 can absorb and disperse the impact energy from the road surface, thereby reducing the vibration of the vehicle and passengers.

[0047] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. 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 tensioning assembly for a motor vehicle drive system, comprising a non-disassembly tensioner (1), Features: The non-disassembly tensioner (1) comprises a mounting seat (2), a rotating disk (3), a direct connection plate (4), a hollow positioning frame (5), a drive shaft (6), a main wheel (7), a tensioning wheel (8) and a fine-tuning assembly (9); the mounting seat (2) is screwed to the outside of a motor vehicle engine by means of bolts; the rotating disk (3) is slidably sleeved inside the mounting seat (2); the direct connection plate (4) is fixedly connected to a side surface of the rotating disk (3); the hollow positioning frame (5) is arranged on the outside of the mounting seat (2); the drive shaft (6) is rotatably connected to the outside of the hollow positioning frame (5); the middle part of the main wheel (7) is fixedly connected to the outside of the drive shaft (6); the tensioning wheel (8) is mounted on the outside of the mounting seat (2); the fine-tuning assembly (9) is arranged inside the hollow positioning frame (5); and a tensioning portion (10) is also installed at one end of the tensioning wheel (8); The fine adjustment component (9) comprises a limit plate (11), a linear shaft (12), an oblique rack (13) and a leaf spring (14); the middle of the limit plate (11) is fixedly connected to the outer side of the linear shaft (12); the other side of the linear shaft (12) is fixedly connected to the middle of the rotating plate (3); the oblique rack (13) is arranged in an annular array on the outer side of the limit plate (11); and the leaf spring (14) is fixedly connected to the inside of the hollow positioning frame (5) to abut against the oblique rack (13); The mounting seat (2) is used to support and fix the hollow positioning frame (5); the rotating disk (3) cooperates with the directly connected plate (4) to rotate the fine-tuning assembly (9); the hollow positioning frame (5) is used to support the tensioning portion (10) and the tensioning wheel (8); the fine-tuning assembly (9) is used to intermittently drive the tensioning wheel (8) to rotate; the driving shaft (6) is used to connect the main wheel (7); the main wheel (7) is used to sleeve the inner side of the narrow belt on the main wheel (7); the tensioning wheel (8) is used to resist the narrow belt and tighten the narrow belt; the tensioning portion (10) is used to fully reduce the shock of the narrow belt during the transmission process.

2. A tensioning assembly for a motor vehicle drive system according to claim 1, Features: The tensioning portion (10) comprises an auxiliary rotating bracket (15), a movable shaft (16), a sleeve plate 1 (17), a sleeve plate 2 (18), a fixed rod (19) and an adjusting rod (20); one end of the auxiliary rotating bracket (15) is fixedly connected to the surface of the linear shaft (12); the movable shaft (16) is slidably sleeved on the outer side of the auxiliary rotating bracket (15); the sleeve plate 1 (17) is mounted on the outer side of the movable shaft (16); the sleeve plate 2 (18) is mounted on one side of the tensioning wheel (8); the fixed rod (19) is mounted on the surface of the sleeve plate 1 (17); and the adjusting rod (20) is slidably connected to the inner side of the fixed rod (19) for supporting the sleeve plate 1 (17) and the sleeve plate 2 (18).

3. A tensioning assembly for a motor vehicle drive system according to claim 2, Features: A compression spring (21) and an air chamber damping rod (22) are also provided inside the fixing rod (19); two sides of the compression spring (21) are respectively fixedly connected to the opposite side surfaces of the first sleeve plate (17) and the second sleeve plate (18); and the air chamber damping rod (22) is installed on the inner side of the compression spring (21) to reduce vibration.

4. A tensioning assembly for a motor vehicle drive system according to claim 2, Features: A horizontal adjustment component (23) is also provided on the other side of the auxiliary rotating bracket (15). The horizontal adjustment component (23) comprises a sealing cover (24), a rotating handle (25), a threaded rod (26), a movable disk (27), a protrusion (28) and a guide rod (29). The sealing cover (24) is mounted on the surface of the auxiliary rotating bracket (15). The outer side of the rotating handle (25) is fixedly connected to one end of the threaded rod (26). The threaded rod (26) passes through the interior of the sealing cover (24) and is rotatably connected to the middle of the movable disk (27). The other side of the movable disk (27) is fixedly connected to the inner side of the movable shaft (16). The protrusion (28) is fixedly connected to both sides of the movable disk (27). The guide rod (29) passes through the interior of the protrusion (28) and is fixedly connected to the inner surface of the sealing cover (24).

5. A tensioning assembly for a motor vehicle drive system according to claim 4, Features: A through hole (30) matching the size of the guide rod (29) is also provided inside the protrusion (28).

6. A tensioning assembly for a motor vehicle drive system according to claim 1, Features: The outer side of the hollow positioning frame (5) is also provided with a circular groove (31) whose size is larger than that of the direct connection plate (4).

7. A tensioning assembly for a motor vehicle drive system according to claim 1, Features: A pin shaft (32) is also provided on the outer side of the mounting seat (2), and the pin shaft (32) is used to connect to the periphery of an engine of a motor vehicle.

8. A tensioning assembly for a motor vehicle drive system according to claim 4, Features: A thrust bearing (33) is also installed at the connection between the moving plate (27) and the threaded rod (26).

Images