CN110553018A

CN110553018A - drive belt tensioning device and method for operating the same

Info

Publication number: CN110553018A
Application number: CN201810558050.XA
Authority: CN
Inventors: 魏水生; 蒋春雷
Original assignee: NINGBO FENGMAO FAR-EAST RUBBER Co Ltd
Current assignee: NINGBO FENGMAO FAR-EAST RUBBER Co Ltd
Priority date: 2018-06-01
Filing date: 2018-06-01
Publication date: 2019-12-10

Abstract

The invention discloses a driving belt tensioning device and a working method thereof, wherein the driving belt tensioning device comprises a device main body, a tensioning assembly, a damping assembly and an elastic member, wherein the tensioning assembly is rotatably connected with the device main body and is used for tensioning the driving belt, the driving belt tensioning device is in a loading state when the tensioning assembly is stressed to rotate along one direction relative to the device main body, the driving belt tensioning device is in an unloading state when the tensioning assembly is stressed to rotate along the opposite direction relative to the device main body, the damping assembly is arranged between the device main body and the tensioning assembly, the damping assembly is provided with a first bearing groove, two ends of the elastic member are respectively and rotatably arranged on the device main body and the damping assembly, and one end of the damping assembly is retained in the first load bearing slot.

Description

Drive belt tensioning device and method for operating the same

Technical Field

The present invention relates to the field of a drive belt drive system for an engine, and more particularly to a drive belt tensioning device for a drive system, wherein the drive belt tensioning device is capable of producing a stable and high damping during operation to dampen vibrations of the drive belt tensioning device.

background

Vehicles driven by an internal combustion engine or driven by electricity as an engine generally use a transmission belt transmission system to transmit power from the crankshaft of the engine to the various accessories of the engine, wherein the accessories are mainly steering pumps, liquid pumps, air compressors, fuel pumps, etc., wherein each accessory is equipped with a pulley, all of which can be connected in series to the crankshaft pulley of the engine by at least one transmission belt, so that when the crankshaft pulley of the engine is driven, the various accessories can be driven by the transmission belt to operate normally. In order to place the belt in tension, it is often necessary to maintain proper tension in the belt using an automatic tensioner to prevent the belt from loosening and slipping between the pulleys, wherein the belt, pulleys and automatic tensioner comprise a belt drive system.

In addition, the automatic tensioner can also properly compensate the swinging of the pivoting arm of the automatic tensioner caused by tension change and attenuation of the transmission belt, abrasion of the transmission belt, engine speed fluctuation and the like, so that excessive noise and vibration generated by an engine in the working process can be avoided, and the normal work of a transmission belt driving system can be ensured.

Typically, the automatic tensioner includes two out-of-balance states, an auto-load state and an auto-unload state. In the automatic loading state, the vibration amplitude of the pivoting arm of the automatic tensioner is relatively large, if the vibration amplitude is not suppressed, the automatic tensioner will transmit vibration to the front section of the whole engine, so that the whole performance of the whole engine is affected, therefore, the structure of the automatic tensioner is required to be improved, so that the automatic tensioner provides larger damping, and further attenuates the vibration of the automatic tensioner, and when the automatic tensioner is in the automatic unloading state, the pivoting arm of the automatic tensioner is required to rebound rapidly, so that proper pressure is provided for tensioning the transmission belt, and further, the sliding of the transmission belt is avoided, so that the automatic tensioner is required to have smaller damping.

Disclosure of Invention

It is an object of the present invention to provide a drive belt tensioning device and method of operating the same, wherein the drive belt tensioning device is able to regain balance by providing greater damping under a loaded condition.

It is another object of the present invention to provide a drive belt tensioning apparatus and method of operating the same in which the drive tensioning apparatus is able to quickly regain balance in an unloaded condition to maintain contact between the drive tensioning apparatus and a drive belt of a drive belt drive system and to tension the drive belt.

It is another object of the present invention to provide a belt tensioning device and method of operating the same, wherein the belt tensioning device is capable of providing greater damping when tensioning the drive belt to dampen the vibrations of the belt tensioning device itself.

Another object of the present invention is to provide a driving belt tensioning device and a method of operating the same, in which the driving belt tensioning device can reduce noise generated during operation of the driving belt tensioning device by attenuating vibration of the driving belt tensioning device itself.

It is another object of the present invention to provide a belt tensioning device and method of operating the same, wherein the belt tensioning device is capable of returning to an equilibrium state from a loaded state or an unloaded state, respectively, wherein the belt tensioning device is capable of quickly returning to the equilibrium state when the belt tensioning device is in the unloaded state to ensure loading of the belt by the belt tensioning device.

Another object of the present invention is to provide a driving belt tensioning device and a working method thereof, wherein the driving belt tensioning device includes a device body, an elastic member and a damping member, wherein when the driving belt tensioning device is in the loading state, the elastic member can not only press the damping member by torsion, but also press the damping member circumferentially to press the damping member against the device body, so that the driving belt tensioning device can provide a larger damping.

It is another object of the present invention to provide a belt tensioning device and method of operating the same in which the damping assembly is subjected to a large force when the belt tensioning device is in the unloaded condition, thereby allowing the belt tensioning device to quickly return to the equilibrium condition to ensure loading of the belt by the belt tensioning device.

To achieve at least one of the above objects of the present invention, there is provided a belt tensioning apparatus for tensioning a belt, wherein the belt tensioning apparatus includes:

An apparatus main body;

A tensioning assembly, wherein said tensioning assembly is rotatably connected to said apparatus body for tensioning said belt and said belt tensioning device is in a loaded state when said tensioning assembly is forced to rotate in one direction relative to said apparatus body, wherein said belt tensioning device is in an unloaded state when said tensioning assembly is forced to rotate in an opposite direction relative to said apparatus body;

A damping assembly, wherein the damping assembly is disposed between the device body and the tensioning assembly, wherein the damping assembly is provided with a first load-bearing slot; and

an elastic member, wherein both ends of the elastic member are torsionally mounted to the apparatus body and the damping member, respectively, and one end of the damping member is held in the first bearing groove, the elastic member is twisted when the belt tensioner is in the loaded state or the unloaded state, and the elastic member acts on the damping member, and the belt tensioner is restored to equilibrium.

According to an embodiment of the present invention, the elastic member is implemented as a coil spring, wherein the elastic member has a first torsion end and a second torsion end, wherein the first torsion end is retained in the apparatus body, and wherein the second torsion end is retained in the first bearing groove.

according to an embodiment of the present invention, the apparatus body includes a position-limiting groove and a position-limiting portion, wherein the position-limiting portion forms a position-limiting end in a direction in which the position-limiting groove extends, wherein the elastic member includes an elastic body, wherein the elastic member extends from the first torsion end to the second torsion end to form the elastic body, wherein the elastic body forms a first end surface near the first torsion end and a second end surface near the other torsion end, wherein the elastic body at the first end surface is seated in the position-limiting groove of the apparatus body, and the first torsion end is pressed by the position-limiting end, wherein the elastic body at the second end surface is seated in the first bearing groove of the damping member, and the second torsion end is pressed by the damping member.

According to an embodiment of the invention, the first end surface is an inclined surface, wherein the depth of the limit groove gradually away from the thrust end is gradually reduced so that the limit groove is adapted to the first end surface of the elastic body.

According to an embodiment of the present invention, the damping assembly includes a first damping member and a second damping member disposed separately from the first damping member and the second damping member, wherein the first damping member and the second damping member are rotatably disposed on the apparatus main body, wherein the first damping member includes a first force-receiving main body, wherein the first force-receiving main body has a first free end and a first force-receiving end, wherein the first force-receiving groove is located between the first free end and the first force-receiving end, wherein the first force-receiving main body forms a limit end at an end of the first force-receiving main body extending near the first force-receiving end, wherein the second torsion end is pressed against the limit end of the first force-receiving main body, wherein the second damping member is rotatably disposed between the first force-receiving end of the first force-receiving main body and the tensioning assembly, and a first positive pressure is generated between the second torsion end of the resilient member and the first load bearing groove of the first force bearing body when the belt tensioning device is in the loaded state or the unloaded state.

According to an embodiment of the present invention, the second end surface of the elastic body is an inclined surface, wherein the first force-bearing body has a first high end surface and a first low end surface opposite to the first high end surface, wherein the first bearing groove is located on the first low end surface, and a depth of the first bearing groove between the first high end surface and the first low end surface gradually increases from the first free end to the first force-bearing end, so that the elastic body located on the second end surface is seated in the first bearing groove.

According to an embodiment of the invention, the first force-receiving body has a first outer side and a first inner side, wherein the first force-receiving body extends from the first outer side to form an outer groove wall, wherein the first force-receiving body extends integrally from the first inner side to form an inner groove wall, wherein the outer groove wall and the inner groove wall form the first load-bearing groove, wherein the outer groove wall gradually decreases in thickness between the first outer side and the first inner side in the direction from the first free end to the first force-receiving end, wherein the inner groove wall gradually increases in thickness between the first outer side and the first inner side in the direction from the first free end to the first force-receiving end.

According to an embodiment of the invention, the first damping member comprises a first damping housing, wherein the first damping housing is arranged at the first high end face and the first outer side face of the first force receiving body.

According to an embodiment of the invention, the second damping member is provided with a second bearing groove, wherein the portion of the resilient body near the second torsion end is located in the second bearing groove, so that when the drive belt tensioning device is in the loaded state, the resilient member is radially twisted to generate a second positive pressure between the second bearing groove of the second damping member and the resilient body of the resilient member.

According to an embodiment of the present invention, the second damping member includes a second force-receiving body and a second damping housing, wherein the second damping housing is disposed on the second force-receiving body, and the second bearing groove is disposed on the second force-receiving body.

According to an embodiment of the present invention, the second force-bearing main body has a second high end surface and a second low end surface, wherein the second bearing groove is disposed on the second low end surface, wherein the second force-bearing main body includes a high end, wherein the high end is located in a middle of the second bearing groove, and wherein a thickness of the second bearing groove between the second high end surface and the second low end surface gradually decreases from the high end to the second free end and the second force-bearing end, respectively.

According to an embodiment of the invention, wherein the damping member comprises a force-receiving body, wherein the force-receiving body has a first free end and a second free end, wherein the first bearing groove is provided in the force-receiving body between the first free end and the second free end, wherein the first force-receiving body forms a limit end at the end of the first bearing groove extending between the first free end and the second free end, wherein the second free end is located in the direction of the external force applied to the tensioning member, wherein the resilient body at the first end face is seated in a limit groove of the device body, wherein the resilient body at the second end face is seated in the first bearing groove and the second twisted end of the resilient member is pressed against the limit end, and when the belt tensioning device is in the loaded state or the unloaded state, a first positive pressure is generated between the second torsion end of the elastic member and the first bearing groove of the first force-bearing body.

According to an embodiment of the present invention, the second end surface of the elastic body is an inclined surface, wherein the force-receiving body has a high end surface and a low end surface opposite to the high end surface, wherein the first bearing groove is located on the low end surface, and a depth of the first bearing groove between the high end surface and the low end surface gradually increases from the first free end to the second free end, so that the elastic body located on the second end surface is seated on the first bearing groove.

According to an embodiment of the present invention, the force-receiving body has an outer side and an inner side, wherein the force-receiving body extends from the outer side to form an outer groove wall, wherein the force-receiving body extends from the inner side to form an inner groove wall, wherein the outer groove wall and the inner groove wall form the first load-bearing groove, wherein the thickness of the outer groove wall between the outer side and the inner side decreases gradually in the direction from the free end to the free end, and wherein the thickness of the inner groove wall between the outer side and the inner side increases gradually in the direction from the first free end to the second free end.

According to an embodiment of the invention, the damping member is provided with a second bearing groove, wherein the portion of the resilient body near the second end face is seated in the second bearing groove to radially twist the resilient member to generate a second positive pressure between the second bearing groove of the second damping member and the resilient body of the resilient member when the drive belt tensioning device is in the loaded state.

According to an embodiment of the present invention, the damping assembly includes a damping housing, wherein the damping housing is disposed on the outer side surface and the high end surface of the force-receiving body.

According to an embodiment of the invention, the damping member is arranged in an arc shape, wherein the first bearing groove is arranged in an arc shape.

according to an embodiment of the present invention, a circumference of the arc-shaped first bearing groove and a circumference of the arc-shaped damping component are non-concentric circles.

According to an embodiment of the invention, the second bearing groove is arranged in an arc shape.

To achieve at least one of the above objects of the present invention, the present invention provides a method of operating a belt tensioner, wherein the method comprises the steps of:

A tensioning assembly in the belt tensioning device in a loaded state or an unloaded state presses against a damping assembly; and

An elastic member disposed in an apparatus body of the tensioning device and retained in a first load-bearing slot of the damping assembly twists to act on the damping assembly to return the belt tensioning device to equilibrium.

According to an embodiment of the invention, wherein the method comprises the steps of: when the driving belt tensioning device is in the loading state or the unloading state, the elastic member seated in the first bearing groove presses the damping assembly in any one of a positive pressure direction in which the damping assembly presses against an device main body of the tensioning device and a tangential direction in which the damping assembly moves circumferentially through torsion, so that a first positive pressure is generated between the elastic member and the first bearing groove of the damping assembly.

According to an embodiment of the present invention, the working method comprises the following steps: when the driving belt tensioning device is in the loading state, the elastic member seated in a second bearing groove of the damping member circumferentially presses against the damping member in a twisting manner, so that a second positive pressure is generated between the second bearing groove of the damping member and the elastic member.

According to an embodiment of the present invention, wherein the damping member is provided in an arc shape, wherein the first bearing groove and the second bearing groove are provided in an arc shape, respectively.

further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.

These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the claims.

Drawings

Fig. 1 shows a schematic view of a belt tensioning apparatus of the present invention as applied to a belt tensioning apparatus.

FIG. 2 shows a schematic view of a belt tensioning device of the present invention in an unloaded condition.

FIG. 3 shows a schematic view of a belt tensioning apparatus of the present invention in an installed condition.

FIG. 4 shows a schematic view of a belt tensioning apparatus of the present invention in a disassembled state.

FIG. 5 shows a cross-sectional view of a belt tensioning device of the present invention in one direction.

Fig. 6 shows an exploded view of a portion of a belt tensioner of the present invention.

FIG. 7 shows a schematic view of a first damping member of a belt tensioner of the present invention.

Fig. 8 shows a schematic view of an apparatus body of a belt tensioner of the present invention.

Fig. 9 is a broken view showing a partial structure of a belt tensioner of the present invention.

FIG. 10 is a force diagram of a belt tensioning device of the present invention in a tensioned state.

Fig. 11 shows a schematic view of a variant embodiment of the above-described embodiment of a drive belt tensioning device of the invention in an unloaded state.

Fig. 12 is an exploded schematic view showing a partial structure of a modified embodiment of the above-described embodiment of a belt tensioner of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.

it is to be understood that the terms "a" and "an" are to be interpreted as meaning that a number of one element may be one in one embodiment, but not limited to one in another embodiment, and that the terms "a" and "an" are used interchangeably herein to mean "before" and "after" in some instances, and are intended to mean "after" in some instances, and are not to be interpreted as limiting.

Referring to fig. 1 to 10, a belt tensioning device according to a preferred embodiment of the present invention will be described in detail below, wherein the belt tensioning device 100 is capable of generating a large damping when applied to a belt drive system, and is capable of damping vibration of the belt tensioning device 100 itself, thereby preventing the belt tensioning device 100 from generating a large noise during operation. That is, since the belt tensioning device 100 of the present invention is capable of generating a relatively large amount of damping during operation, the belt tensioning device 100 is capable of slowly moving the belt tensioning device 100 in a loading direction to restore equilibrium to achieve good damping when the belt tensioning device 100 is in a loaded state, and the belt tensioning device 100 is capable of quickly abutting a belt in the belt drive system when the belt tensioning device 100 is in an unloaded state to prevent the belt of the belt drive system from slipping.

Belt tensioning device 100 includes a device body 10, an elastic member 20, a damping member 30, and a tensioning member 40, wherein the tensioning member 40 is rotatably disposed to the device body 10, wherein the elastic member 20 and the damping member 30 are disposed to the device body 10 such that when the belt tensioning device 100 is in the loaded state, greater damping is generated by the cooperation between the device body 10, the elastic member 20, and the damping member 30, thereby allowing the belt tensioning device 100 to slowly return to equilibrium. It will be appreciated that the belt tensioner 100 of the present invention further includes a coupling assembly 50, wherein the device body 10 and the tension assembly 40 are rotatably coupled to the coupling assembly 50, wherein the elastic member 20 and the damping assembly 30 are disposed between the device body 10 and the tension assembly 40. It will be appreciated by those skilled in the art that the coupling assembly 50 may be implemented in the present invention to include, but not limited to, a bearing and a shaft core, and the present invention is not limited in this respect.

The main body 10 includes a main body 11, a circumferential wall 12 extending from the main body 11, wherein a mounting groove 13 is formed on the main body 11 facing a side of the circumferential wall 12, wherein the circumferential wall 12 and the main body 11 form a mounting cavity 101, wherein the mounting cavity 101 is disposed to communicate with the mounting groove 13, and when the elastic member 20 is mounted on the main body 10, the elastic member 20 is seated on the mounting groove 13. Further, a central wall 14 is formed at a side of the middle portion of the apparatus body 11 of the apparatus body 10 facing the circumferential wall 12, wherein the central wall 14 forms a mounting hole 140, wherein the connecting member 50 passes through the mounting hole 140, and the tension member 40 is rotatably mounted to the apparatus body 10.

The elastic member 20 is preferably implemented as a torsion spring, and the elastic member 20 has a spiral structure, wherein the elastic member 20 has two torsion ends 21 and comprises an elastic body 22, specifically, a first torsion end 21A and a second torsion end 21B, respectively, wherein the first torsion end 21A extends spirally to the second torsion end 21B to form the elastic body 22, wherein the elastic body 22 of the elastic member 20 defines an end surface 220 at the two torsion ends 21, respectively, specifically, the elastic member 20 defines a first end surface 220A at the first torsion end 21A, wherein the elastic member 20 defines a second end surface 220B at the second torsion end 21B, wherein the first end surface 220A and the second end surface 220B are symmetrical to each other, wherein the first end surface 220A and the second end surface 220B are non-horizontal planes, the elastic body 22 can deform to make at least one of the first end face 220A and the second end face 220B of the elastic member 20 tend to form a flat plane when at least one of the first end face 220A and the second end face 220B abuts against a flat plane. It is worth mentioning that when the elastic member 20 is seated in the mounting groove 13 of the apparatus body 10, the elastic member 20 is wound around the central wall 14 of the apparatus body 10 in a collar shape.

In the present invention, the device main body 10 further includes a thrust portion 15, wherein the thrust portion 15 forms a thrust end 150 near the mounting groove 13, wherein the device body 11 of the device main body 10 extends toward the circumferential wall 12 to form the thrust portion 15, the elastic member 20 is seated behind the mounting groove 13 of the device main body 10, wherein one of the torsion ends 21 of the elastic member 20 is received in the mounting groove 13, and one of the torsion ends 21 of the elastic member 20 is pressed against the thrust end 150 of the thrust portion 15, so as to prevent the elastic member 20 from rotating radially when the belt tensioning device 100 is in the loaded state, thereby limiting the elastic body 22 of the elastic member 20 from rotating radially. In addition, when the elastic member 20 is forced to twist radially, the thrust end 150 of the thrust portion 15 exerts a reaction force on the elastic body 22, so as to balance the elastic force generated by twisting the elastic body 33. In order to enable those skilled in the art to understand the present invention, the present invention defines the torsion end 21 of the elastic member 20 blocked by the thrust end 150 of the thrust part 15 as the first torsion end 21A, and the other end of the elastic member 20 as the second torsion end 21B.

It should be noted that, in the present invention, the mounting grooves 13 have different depths, and the depth of the mounting groove 13 closer to the thrust end 150 is larger, when the elastic member 20 is mounted in the mounting groove 13, the first end surface 220A of the elastic member 20 is attached to the mounting groove 13, and the first torsion end 21A of the elastic member 20 is abutted against the thrust end 150, so as to prevent the first torsion end 21A of the elastic member 20 from rotating in the mounting groove 13. It is worth mentioning that the inclination of the first end face 220A of the elastic body 22 is adapted to the depth of the mounting groove 13, so that the mounting groove 13 is adapted to the first end face 220A of the elastic member 20.

The damping member 30 includes a first damping member 31 and a second damping member 32, wherein the first damping member 31 and the second damping member 32 are respectively disposed in the mounting cavity 101 of the apparatus body 10, and the first damping member 31 and the second damping member 32 are respectively mounted to the elastic body 22 of the second end face 220B of the elastic member 20. When the belt tensioning device 100 is in the loaded state, the first damping member 31 and the second damping member 32 tend to rotate in the mounting cavity 101 and are able to damp against the circumferential wall 12 of the device body 10.

The first damping member 31 includes a first force receiving body 311 and a first damping housing 312, wherein the first force receiving body 311 is mounted to the first damping housing 312, wherein the first force receiving body 311 is made of a rigid material and may be formed by an integral molding method, the first force receiving body 311 is wrapped around the first damping housing 312, wherein the first damping housing 312 is made of an abrasion-resistant material and may also be formed by an integral molding method, wherein the first force receiving body 311 may be mounted to the first damping housing 312 by a plurality of mounting methods, for example, the first force receiving body 311 and the first damping housing 312 may be engaged with each other, and the first force receiving body 311 may also be mounted to the first damping housing 312 by other prior art methods. Preferably, the outer side of the first force receiving body 311 is provided with a rib which is matched with the first damping shell 312 to enhance the stability between the first force receiving body 311 and the first damping shell 312, wherein when the first damping member 31 tends to rotate, the friction between the first damping member 31 and the inner side of the circumferential wall 11 of the main body 10 can be enhanced by the first damping shell 312.

Specifically, the first force receiving body 311 has a first outer side surface 31101 and a first inner side surface 31102, wherein a first damping housing 312 is wrapped around the first outer side surface 31101 of the first force receiving body 311, and when the first damping member 31 is forced to rotate in the belt tensioning device 100, friction between the first damping member 31 and the inner side of the circumferential wall 11 of the device body 10 can be enhanced by the first damping housing 312.

The first force-receiving body 311 further has a first high end surface 31103 and a first low end surface 31104 opposite to the first high end surface 31103, wherein the first high end surface 31103 of the first force-receiving body 311 is enclosed by the first damping housing 312, so that when the first damping member 31 is forced to rotate, damping is generated between the first damping member 31 on the side of the first high end surface 31103 and the tensioning assembly 40. The first force-receiving body 311 has a first force-receiving end 3111 and a first free end 3112, wherein when the belt tensioner 100 is in the unloaded state, the tension assembly 40 pushes the first free end 3112 of the first damping member 31, thereby tending to rotate the first damping member 31, wherein when the belt tensioner 100 is in the loaded state, the tension assembly 40 is away from the first free end 3112, and the tension assembly 40 rotates in an opposite direction relative to the apparatus body 10.

Further, the first force-bearing body 311 of the first damping member 31 is provided with a first bearing groove 3113 on the first lower end face 31104 for accommodating the elastic body 22 of the elastic member 20, and the first bearing groove 3113 extends from the first free end 3112 to the first force-bearing end 3111, wherein the first force-bearing body 311 forms a limit end 3114 at the end of the first bearing groove 3113 near the first force-bearing end 3111, wherein after the elastic member 20 is mounted on the device body 10, the elastic body 22 at the second end face 220B is seated in the first bearing groove 3113, and the second torsion end 21B of the elastic member 20 is pressed against the limit end 3114 of the first force-bearing body 311, so that when the elastic member 20 tends to be twisted, the second torsion end 21B of the elastic member 20 is blocked by the limit end 3114 of the first bearing groove 3113, while avoiding radial rotation, since the first torsion end 21B of the elastic member 20 is restrained by the mounting groove 13 of the apparatus body 10, when the belt tensioning apparatus 10 is in the loaded state and the first damping member 31 tends to press against the second torsion end 21B of the elastic member 20, the elastic member 20 can generate a torque in the mounting cavity 101 of the apparatus body 10, and can generate a tangential force and a radial positive force on the first damping member 31, and accordingly, the first damping member 31 will be subjected to a reaction force of the circumferential wall 12 of the apparatus body 10.

It is worth mentioning that, in the present invention, the first bearing groove 3113 of the first force-receiving body 311 has different depths along the first force-receiving end 3111 and the first free end 3112, wherein the depth of the first bearing groove 3113 gradually increases from the first free end 3112 to the first force-receiving end 3111, and in addition, the thickness of the first force-receiving body 311 along the first inner side surface 31102 to the first outer side surface 31101 on the first high end surface 31103 and the first low end surface 31104 gradually increases to fit the elastic member 20 seated in the first bearing groove 3113, so that the first high end surface 31103 of the first force-receiving body 311 tends to form a horizontal plane after the elastic body 22 of the second end surface 220B is seated in the first bearing groove 3113.

In addition, the first force-receiving body 311 integrally extends from the first outer side surface 31101 to form an outer groove wall 3115, the first force-receiving body 311 integrally extends from the first inner side surface 31102 to form an inner groove wall 3116, wherein the outer groove wall 3115 and the inner groove wall 3116 form the first load-bearing groove 3113, in the present invention, the outer groove wall 3115 gradually decreases in thickness between the first outer side surface 31101 and the first inner side surface 31102 in a direction from the first free end 3112 to the first force-receiving end 3111, and the inner groove wall 3116 gradually increases in thickness between the first outer side surface 31101 and the first inner side surface 31102 in a direction from the first free end 3111 to the first force-receiving end 3111, in such a way that the second torsion end 21B of the elastic member 20, which is seated in the first load-bearing groove 3113, presses the first torsion-damping member 31 by torsion in a direction towards the first torsion-damping member 3113 when the belt-tensioning device is in the tensioned state or in the unloaded state Either one of the positive pressure direction of the apparatus main body 11 of the apparatus 10 and the tangential direction of the circumferential movement of the first damping member 31 presses against the first damping member 31 to generate a first positive pressure between the elastic member 20 and the first bearing groove 3113 of the first force receiving main body 311.

It should be noted that the first force-receiving main body 311 of the first damping member 31 is implemented as an arc, wherein the first bearing groove 3113 is also implemented as an arc, and a circle center of the arc of the first bearing groove 3113 is different from a circle center of the first force-receiving main body 311, wherein the second damping housing 312 is configured as an arc adapted to the first force-receiving main body 311.

As can be understood by those skilled in the art, since the circle centers of the arc of the first bearing groove 3113 and the arc of the first force-bearing main body 311 are different, when the second torsion end 21B of the elastic member 20 seated in the first bearing groove 3113 generates a torque, the first damping member 31 can decompose the torque generated by the elastic member 20 into a tangential component and a radial pressure.

Further, the second damping member 32 includes a second force-receiving body 321 and a second damping housing 322, wherein the second damping housing 322 is disposed outside the second force receiving body 321, wherein the second force-bearing body 321 is made of a rigid material and can be made by an integral molding manner, the second force-bearing body 321 is wrapped in the second damping shell 322, wherein the second damping housing 322 is made of wear-resistant material, and can be made by integral molding, the second force-bearing body 321 can be mounted to the second damping housing 322 by various mounting methods, for example, the second force-bearing body 321 and the second damping shell 322 can be engaged with each other, and the second force-bearing body 321 can also be mounted on the second damping shell 322 by other methods in the prior art. Preferably, the outer wall of the second force-receiving body 321 is provided with a rib that cooperates with the second damping housing 322.

Specifically, the second force receiving body 321 has a second outer side surface 32101 and a second inner side surface 32102, wherein the second damping housing 322 is wrapped around the second outer side surface 32101 of the second force receiving body 321, and when the second damping member 32 is forced to tend to rotate, frictional damping is generated between the first damping member 31 and the circumferential wall 13 of the apparatus body 10. The second force-bearing body 321 has a second force-bearing end 3211 and a second free end 3212, wherein the first force-bearing end 3111 is abutted against the first force-bearing end 3111 of the first force-bearing body 311 of the first damping member 31, wherein when the driving belt tensioning device 100 is in the loading state, the second free end 3212 can be driven by the tensioning assembly 40, so that the second damping member 32 is forced to tend to rotate, and at this time, the second force-bearing end 3211 of the second force-bearing body 321 is abutted against the first force-bearing end 3111 of the first force-bearing body 311, so that the first force-bearing body 311 twists the second twisting end 21B of the elastic member 20, thereby twisting the elastic member 20.

further, the second force receiving main body 321 has a second high end surface 32103 and a second low end surface 32104 opposite to the second high end surface 32103, wherein the second force-bearing main body 321 forms a second bearing groove 3213 on the second lower end surface 32104, wherein the elastic body 22 adjacent to the second end face 220B is carried in the second carrying groove 3213, in such a way, so that the spring element 20, which is seated in a second bearing groove 3213 of the second damping element 32, can be pressed against the second damping element 32 in a torsional manner in the circumferential direction when the drive belt tensioning device 100 is in the loaded state, so as to generate a second positive pressure between the second bearing groove 3213 of the second damping member 32 and the elastic member 20, the torque generated by the elastic member 20 is transmitted to the second damping member 32, so that a large positive pressure is generated between the second damping member 32 and the circumferential wall 12 of the apparatus body 10.

It is worth to be integrated that the second bearing groove 3213 of the second force-bearing main body 321 on the side of the second lower end surface 32104 forms a high end 3214, wherein the thickness of the second bearing groove 3213 between the second high end surface 32103 and the second lower end surface 32104 gradually decreases along the direction from the high end 3214 to the second free end 3212 and the direction to the second force-bearing end 3211, respectively, in such a way, when the elastic element 20 is disposed in the installation cavity 101 formed by the device body 11 of the device main body 10, the bearing groove 3213 can better contact with the second end surface 220B of the elastic main body 22 of the elastic element 20, and the second damping element 32 can be adapted to the elastic element 20 spirally extending in different directions. Preferably, the high end 3214 is located at the center of symmetry of the bearing groove 3213. In addition, the depth of the second bearing groove 3213 is set to fit the second end face 220B of the elastic member 20, and the thickness of the second force receiving main body 321 between the second high end face 32103 and the second low end face 32104 along the second inner side surface 32102 to the second outer side surface 32101 gradually increases, so that the second high end face 32103 of the second damping member 32 and the first high end face 31103 of the first damping member 31 are on the same plane when the second damping member 32 is mounted on the second end face 220B of the elastic member 20.

It is also worth mentioning that the second force receiving body 321 of the second damping member 32 is arc-shaped, and the second bearing groove 3213 is correspondingly arc-shaped. Further, the second damping case 322 is provided in an arc shape to fit the second damping member 32.

Further, the tensioning unit 40 includes a tensioning body 41, a tensioning wheel 42 and a connecting unit 43, wherein the tensioning body 41 and the tensioning wheel 42 can be simultaneously rotatably mounted to the tensioning body 41 of the apparatus body 10 by the connecting unit 43.

Specifically, the tensioning body 41 comprises a tensioning body 411, wherein the tensioning body 411 forms a connecting hole 4110, wherein the connecting component 50 is connected with the tensioning body 411 through the connecting hole 4110, wherein the connecting hole 4110 is coaxial with the mounting hole 140 in the apparatus body 10. The tension body 41 further includes a stopper 412, wherein when the tension assembly 40 and the apparatus body 10 are coupled to each other, an arc of rotation of the tension assembly 40 with respect to the apparatus body 10 can be limited by the stopper 412.

The device main body 10 includes a limiting groove 16, wherein the limiting groove 16 is located on the device body 11 outside the circumferential wall 13, and the limiting block 412 of the device main body 10 can slide along the limiting groove 16 and is limited by the limiting groove 16. It is worth mentioning that belt tensioning device 100 is in the loaded state and the unloaded state when stop 412 is rotated in different directions along stop slot 16, belt tensioning device 100 is in a balanced state when stop 412 stops rotating, and belt tensioning device 100 is capable of maintaining the belt of the belt drive system in tension and of producing greater damping to dampen the vibrations of belt tensioning device 100 itself when belt tensioning device 100 is in the loaded state. Further, the main body 10 includes a fixing hole 17, wherein the fixing hole 17 is located in the main body 11 of the main body 10, so that the main body 10 can be fixed in the belt driving system through the fixing hole 17.

Further, the tensioning body 41 comprises a pushing block 413, wherein the pushing block 413 is disposed on the tensioning body 411, and when the tensioning assembly 40, the damping assembly 30, the elastic member 20 and the device body 10 are assembled, the pushing block 413 and the first damping member 31 and the second damping member 32 of the damping member 30 are located on the same plane. When the belt tensioning device 100 is in the loaded state, the stop block 412 of the tensioning body 41 will rotate along the stop slot 16 and the push block 413 of the tensioning body 41 will push the second free end 4112 of the second damping member 32.

Referring to fig. 2 and 10, when the driving belt tensioning device 100 is in the loading state, the stopper 412 of the tensioning body 41 of the tensioning assembly 40 will rotate along the stopper groove 16 of the device body 11 of the device body 10, at which time the push block 413 of the tensioning body 41 will tend to push the second free end 3212 of the second force receiving body 321 of the second damping member 32, in other words, the second damping member 32 in the loading state will be subjected to the force P of the push block 413, wherein after the second damping member 32 is subjected to the force P of the push block 413, the second force receiving end 3211 of the second force receiving body 321 of the second damping member 32 tends to exert a corresponding force on the first force receiving end 3112 of the first damping member 31, and conversely, the second force receiving end 3211 of the second damping member 32 is subjected to the reaction force P1 of the first damping member 31, that is, the second damping member 32 in the loaded state is also subjected to the reaction force P1 of the first damping member 31. In addition, since the first damping member 31 is acted by the force F1 of the second damping member 32, the elastic member 20 located in the first bearing groove 3113 of the first force-bearing body 31 tends to be pushed, and the second torsion end 21B of the elastic member 20 exerts a reaction force F2 on the first damping member 31, while the second torsion end 21B of the elastic member 20 located in the first bearing groove 3113 is forced to be twisted, and at this time, the elastic body 22 borne in the second bearing groove 3213 presses against the second damping member 32, so that the second damping member 32 is acted by the positive pressure P2 of the elastic member 20. In addition, the twisted elastic member 20 is also pressed against the circumferential wall 12 of the apparatus body 10 accordingly. It is worth mentioning that the drive belt tensioning device 100 is capable of producing greater damping because, in the present invention, the force P received by the push block 413 and the reaction force P1 received by the first damping member 31 by the second damping member 32 combine to form a first frictional damping F1 of the drive belt tensioning device 100, wherein the force F1 received by the first damping member 31 and the second torsional end 21B of the elastic member 20 combine to form a second frictional damping F2 of the drive belt tensioning device 100 by applying a reaction force F2 to the first damping member 31, and further, the positive pressure P2 received by the elastic member 20 by the second damping member 32 is the third frictional damping F3 of the drive belt tensioning device.

In other words, in the present embodiment, when the tension assembly 40 is in the loaded state, the second damping member 32 of the damping assembly 30 is pushed by the pushing block 413, so that the second damping member 32 and the inner side surface of the circumferential wall 12 of the main body 10 form a first positive pressure, and the tension assembly 40 radially twists the elastic member 20 and presses the elastic member 20 circumferentially against the second damping member 32 to form a second positive pressure, and in addition, the tension assembly 40 pushes the second twisting end 31B of the elastic member 30 to push the first damping member 31 in the non-tangential direction of the circumferential movement of the damping assembly, so as to generate a third positive pressure between the first bearing groove 3113 of the first damping member 31 and the elastic member 20, so that, when the driving belt tensioning apparatus 100 is in the loaded state, greater damping can be created and the belt tensioning device 100 can tension a belt in the belt drive system.

Referring to fig. 3, on the other hand, when the belt tensioner 100 is in the unloaded state, the force of the push block 413 tending to push the second force receiving body 321 of the second damping member 32 is gradually reduced, wherein the second damping member 32 receives not only the reaction force of the first damping member 31 but also the pushing force of the second damping member 32 pushing the first damping member 31 due to the torsion of the elastic member 20 located in the first bearing groove 3113, and therefore, the push block 413 receives a large pushing force at this time, so that the stopper 412 of the tensioner body 41 can be rapidly slid along the stopper groove 16 of the apparatus body 10, so that the tensioner 42 of the tensioner assembly 40 can be rapidly rebounded to restore the balance, so that when the belt tensioner 100 is in the unloaded state, the belt in the belt drive system can still be kept well under tension.

In addition, as will be appreciated by those skilled in the art, greater damping is provided by the operation of the belt tensioning device 100 in the loaded state, thereby resulting in less noise generated by the operation of the belt tensioning device 100.

Referring to fig. 1-10 in conjunction with fig. 11 and 12, in another embodiment of the present invention, the belt tensioning device 100 includes a device body 10, an elastic member 20, a damping member 30 ', and a tensioning member 40, wherein the tensioning member 40 is rotatably disposed on the device body 10, wherein the elastic member 20 and the damping member 30' are disposed on the device body 10 such that when the belt tensioning device 100 is in the loaded state, greater damping is provided by the cooperation between the device body 10, the elastic member 20, and the damping member 30, thereby enabling the belt tensioning device 100 to quickly return to equilibrium. In this embodiment, the device body 10, the elastic member 20 and the tensioning assembly 40 have the same structure as those of the above embodiments, and the description of this embodiment is omitted. The difference between the present embodiment and the previous embodiment is that the first force-receiving end 3111 of the first damping member 31 and the second force-receiving end 3211 of the second damping member 32 in the previous embodiment are integrally disposed, that is, the first force-receiving main body 311 of the first damping member 31 and the second force-receiving main body 321 of the second damping member 32 in the previous embodiment form a force-receiving main body 311 ' of the damping assembly 30 ' in the present embodiment, and in the previous embodiment, the first outer side surface 31101, the first inner side surface 31102, the first high end surface 31103, and the first low end surface 31104 of the first force-receiving main body 311 and the second outer side surface 32101, the second inner side surface 32102, the second high end surface 32103, and the second low end surface 32104 of the second force-receiving main body 321 are the same surface, and form an outer side surface 31101 '; and a bottom 32101 ' of the force-receiving main body 311 ' in the previous embodiment respectively, An inner side surface 31102 ', a high end surface 31103 ', and a low end surface 31104 '. Further, the first damper housing 312 of the first damper 31 and the second damper housing 322 of the second damper 32 in the above embodiments form a damper housing 312 'of the damper assembly 30' in the present embodiment, wherein the damper housing 312 'is disposed on the outer side surface 31101' and the high end surface 31103 'of the force receiving body 311' to increase a frictional force with the inner side surface of the circumferential wall 12 when the damper assembly 30 is in contact with the inner side surface of the circumferential wall 12 of the apparatus body 10. It should be noted that the damping housing 312 may be formed by integrally forming the first damping housing 312 and the second damping housing 322 in the above embodiments, or may be formed by separately forming, and the invention is not limited in this respect.

Unlike the previous embodiment, the force-receiving body 311 ' includes a first free end 3112 ' and a second free end 3212 ', wherein the force-receiving body 311 ' includes a first bearing groove 3113 ', wherein the first bearing groove 3113 ' is formed between the first free end 3112 ' and the second free end 3212 ' and is located on the lower end surface 31104 ', and further, the force-receiving body 311 ' further includes a second bearing groove 3213 ', wherein the second bearing groove 3213 ' is also formed between the first free end 3112 ' and the second free end 3212 ' and is located on the lower end surface 31104 '.

It should be noted that, in this embodiment, the first bearing groove 3113 'of the force-receiving body 311' has different depths along the first free end 3112 'and the second free end 3212' in the directions of the high end surface 32103 'and the low end surface 32103', wherein the depth of the first bearing groove 3113 'gradually increases from the first free end 3112' to the second free end 3212 ', and in addition, the thickness of the force-receiving body 311' along the inner side surface 31102 'to the outer side surface 31101' on the high end surface 31103 'and the low end surface 31104' gradually increases, so that the high end surface 31103 'of the force-receiving body 311 tends to form a horizontal plane with the second torsion end 31121B of the elastic member 20 after sitting in the first bearing groove 3113'.

The first force-bearing body 311 ' forms a limit end 3114 ' at the end extending near the first bearing groove 3113 ' between the first free end 3112 ' and the second free end 3212 ', wherein after the elastic member 20 is mounted on the device body 10, the second twisted end 21B of the elastic member 20 is located in the first bearing groove 3113 ' and is pressed against the limit end 3114 ' of the force-bearing body 311 ', so that when the elastic member 20 tends to twist, the second twisted end 21B of the elastic member 20 is limited by the first bearing groove 3113 ' and is prevented from rotating radially.

In addition, the force-receiving body 311 ' integrally extends from the outer side surface 31101 ' to form an outer groove wall 3115 ', and the force-receiving body 311 ' integrally extends from the inner side surface 31101 ' to form an inner groove wall 3116 ', wherein the outer groove wall 3115 ' and the inner groove wall 3116 ' form the first bearing groove 3113 ', in the present invention, the outer groove wall 3115 ' gradually decreases in thickness between the outer side surface 31101 ' and the inner side surface 31102 ' in a direction from the first free end 3111 to the second free end 3212 ', and the inner groove wall 3116 ' gradually increases in thickness between the outer side surface 31101 ' and the inner side surface 31102 ' in a direction from the first free end 3111 to the second free end 3212 ', in such a way that the elastic member 20 seated in the first bearing groove 3113 ' is pressed against the damping member 30 ' by torsion when the damping member 30 is pressed against the elastic member 20 in the first bearing groove 3113 Either one of a positive pressure direction of the apparatus body of the tensioning apparatus 10 and a tangential direction of the circumferential movement of the damping member 30 ' is pressed against the damping member 30 ' to generate a first positive pressure between the elastic member 20 and the first bearing groove 3113 of the damping member 30 '.

It is worth integrating that the second bearing groove 3213 'of the force-bearing main body 311' on the side of the low end face 31104 'forms a high end 3214', wherein the thickness of the second bearing groove 3213 'between the high end face 31103' and the low end face 31104 'gradually decreases along the direction from the high end 3214' to the second free end 3212 'and along the direction from the first free end 3112', respectively, in such a way that when the elastic element 20 is disposed in the installation cavity 101 formed by the device body 11 of the device main body 10, the bearing groove 3213 'can better contact with the second end face 220B of the elastic main body 22 of the elastic element 20, and the second bearing groove 3213' can be adapted to the elastic element 20 spirally extending in different directions.

It should be noted that the damping member 30 'is implemented as an arc, wherein the first bearing groove 3113' is also implemented as an arc, and the arc of the first bearing groove 3113 'is located on a circle with a different center than that of the force receiving body 311'.

Also, in the present embodiment, the second torsion end 21B of the elastic member 20 is located in the first bearing groove 3113 ', wherein when the tensioning member 40 is in a loaded state, the damping member 30 ' tends to be pushed by the tensioning member 40, so that a first positive pressure is formed between the damping member 30 ' and the inner side surface of the circumferential wall 12 of the main body 10, and the elastic member 20 located in the second bearing groove 3213 ' of the damping member 30 ' is twisted, so that a second positive pressure is formed on the damping member 30 ', and at the same time, the second torsion end 21B of the elastic member 20 located in the first bearing groove 3113 ' tends to push the damping member 30 ' so as to form a third positive pressure on the damping member 30 '. That is, in this embodiment, when the belt tensioning device 100 is in the loaded state, the damping assembly 30' will be subjected to the combined forces of the first positive pressure, the second positive pressure, and the third positive pressure, thereby creating greater damping of the belt tensioning device 100 to restore equilibrium, and correspondingly reducing noise as the greater damping can dampen the vibrations of the belt tensioning device 100 itself during the period in which the belt tensioning device 100 is restoring equilibrium.

In this embodiment, when the transmission belt tensioner apparatus 100 is in the unloaded state, the force of the tension member 40 pushing the damping member 30 'will be reduced, and at this time and the second torsion end 21B of the elastic member 20 disposed in the first bearing groove 3113' tends to push the damping member 30 'to form a force of the damping member 30', so that, when the transmission belt tensioner apparatus 100 is in the unloaded state, the tension pulley 42 of the tension member 40 can be rapidly rebounded, so that the tension member 40 can be kept in contact with the transmission belt in the transmission belt driving system, and therefore, when the transmission belt tensioner apparatus 100 of the present invention is used, the transmission belt in the transmission belt driving system can be prevented from being disengaged from the tension pulley 42 of the tension member 40 of the transmission belt tensioner apparatus 100, thereby avoiding slipping.

According to another aspect of the invention, the invention provides a drive belt tensioning apparatus and method of operating the same, wherein the method comprises the steps of:

A tensioning assembly 40 in the belt tensioning device 100 in a loaded state or an unloaded state presses against a damping assembly 30; and

An elastic member 20 disposed in an apparatus body 11 of the tensioning apparatus 10 and retained in a first bearing groove 3113 of the damping assembly 30 twists to act on the damping assembly 30 to restore equilibrium for the belt tensioning apparatus 100.

It is worth mentioning that, the elastic member 20 is implemented as a coil spring, wherein the elastic member 20 has a first torsion end 21A and a second torsion end 21B, wherein the first torsion end 21B is defined on the device body 10, wherein the second torsion end 21B is defined on the first bearing groove 3113, wherein the elastic member 20 includes an elastic body 22, wherein the elastic member 20 extends from the first torsion end 21A to the second torsion end 21B to form the elastic body 22. When the belt tensioner 100 is in the loaded state or the unloaded state, the elastic member 20 seated in the first bearing groove 3113 presses the damping member 30 in any one of a positive pressure direction in which the damping member 20 presses against an apparatus main body 11 of the belt tensioner 100 and a tangential direction of circumferential movement of the damping member 30 by twisting, so that a first positive pressure is generated between the elastic member and the first bearing groove 3113 of the damping member 30.

The damping member 30 further includes a second bearing groove 3213, wherein the elastic body 22 near the second torsion end 21B is located in the second bearing groove 3213, so that when the driving belt tensioning device 100 is in the loaded state, the elastic member 20 seated in the second bearing groove 3113 of the damping member 30 circumferentially presses against the damping member 30 in a torsion manner, so as to generate a second positive pressure between the second bearing groove 3213 of the damping member and the elastic member 20.

It can thus be seen that the objects of the invention are sufficiently well-attained. The embodiments for explaining the functional and structural principles of the present invention have been fully illustrated and described, and the present invention is not limited by changes based on the principles of these embodiments. Accordingly, this invention includes all modifications encompassed within the scope and spirit of the following claims.

Claims

1. A drive belt tensioning device for tensioning a drive belt, wherein the drive belt tensioning device comprises:

An apparatus main body;

an elastic member, wherein both ends of the elastic member are respectively rotatably mounted to the apparatus body and the first load-bearing groove retained by the damping member, and when the belt tensioner is in the loaded state or the unloaded state, the elastic member is rotated and acts on the damping member, and the belt tensioner is restored to equilibrium.

2. The drive belt tensioning device of claim 1, wherein the resilient member is embodied as a coil spring, wherein the resilient member has a first twisted end and a second twisted end, wherein the first twisted end is retained to the device body, wherein the second twisted end is retained to the first load bearing slot.

3. The belt tensioning device of claim 2, wherein the device body includes a retaining groove and a thrust portion, wherein the thrust part forms a thrust end in the direction in which the limit groove extends, wherein the elastic member includes an elastic body, wherein the elastic member extends from the first torsion end to the second torsion end to form the elastic body, wherein the resilient body forms a first end surface adjacent the first twisted end and a second end surface adjacent the other of the twisted ends, wherein the elastic body at the first end surface is seated in a limit groove of the device body, and the first torsion end is pressed by the thrust end, wherein the elastic body at the second end surface is seated in the first bearing groove of the damping component, and the second torsion end is pressed by the damping component.

4. The drive belt tensioning device of claim 3, wherein the first end surface is an inclined surface in which the depth of the retaining groove gradually decreases away from the thrust end to allow the retaining groove to fit the first end surface of the elastomeric body.

5. The drive belt tensioning device of claim 4, wherein the damping member includes a first damping member and a second damping member disposed separately from the first damping member and the second damping member, wherein the first damping member and the second damping member are rotatably disposed in the device body, wherein the first damping member includes a first force-receiving body, wherein the first force-receiving body has a first free end and a first force-receiving end, wherein the first force-receiving groove is located between the first free end and the first force-receiving end, wherein the first force-receiving body forms a limit end at an end of the first force-receiving body extending near the first force-receiving end, wherein the second torsion end is pressed against the limit end of the first force-receiving body, wherein the second damping member is rotatably disposed between the first force-receiving end of the first force-receiving body and the tensioning member, and a first positive pressure is generated between the second torsion end of the resilient member and the first load bearing groove of the first force bearing body when the belt tensioning device is in the loaded state or the unloaded state.

6. The drive belt tensioning device of claim 5, wherein the second end face of the elastomeric body is an inclined face, wherein the first force bearing body has a first high end face and a first low end face opposite the first high end face, wherein the first load bearing groove is located at the first low end face, and the depth of the first load bearing groove between the first high end face and the first low end face gradually increases from the first free end to the first force bearing end such that the elastomeric body located at the second end face sits on the first load bearing groove.

7. the belt tensioning device of claim 6, wherein the first force bearing body has a first outer side and a first inner side, wherein the first force bearing body extends from the first outer side to form an outer channel wall, wherein the first force bearing body integrally extends from the first inner side to form an inner channel wall, wherein the outer channel wall and the inner channel wall form the first load bearing channel, wherein a thickness of the outer channel wall between the first outer side and the first inner side gradually decreases in a direction from the first free end to the first force bearing end, wherein a thickness of the inner channel wall between the first outer side and the first inner side gradually increases in a direction from the first free end to the first force bearing end.

8. The belt tensioning device of claim 7, wherein the first damping member includes a first damping housing, wherein the first damping housing is disposed at the first high end face and the first outer side face of the first force bearing body.

9. The drive belt tensioning device of any of claims 5-8, wherein the second damping member is provided with a second load-bearing slot, wherein the portion of the resilient body proximate the second torsion end is located in the second load-bearing slot to radially twist the resilient member to create a second positive pressure between the second load-bearing slot of the second damping member and the resilient body of the resilient member when the drive belt tensioning device is in the loaded state.

10. The belt tensioning device of claim 9, wherein the second damping member includes a second force bearing body and a second damping housing, wherein the second damping housing is disposed on the second force bearing body, wherein the second load bearing slot is disposed on the second force bearing body.

11. The drive belt tensioning device of claim 10, wherein the second force-receiving body has a second high end surface and a second low end surface, wherein the second load-bearing channel is disposed at the second low end surface, wherein the second force-receiving body includes a high end, wherein the high end is located in the middle of the second load-bearing channel, wherein the thickness of the second load-bearing channel between the second high end surface and the second low end surface gradually decreases from the high end to the second free end and the second force-receiving end, respectively.

12. The belt tensioning device of claim 4, wherein the damping member comprises a force-receiving body, wherein the force-receiving body has a first free end and a second free end, wherein the first load-bearing slot is disposed in the force-receiving body between the first free end and the second free end, wherein the first force-receiving body forms a limit stop at an end of the first load-bearing slot extending between the first free end and the second free end, wherein the second free end is located in a direction of an external force applied to the tensioning member, wherein the resilient body at the first end surface is seated in a limit slot of the device body, wherein the resilient body at the second end surface is seated in the first load-bearing slot, and the second twisted end of the resilient member is pressed against the limit stop, and a first positive pressure is generated between the second torsion end of the resilient member and the first load bearing groove of the first force bearing body when the belt tensioning device is in the loaded state or the unloaded state.

13. The drive belt tensioning device of claim 12, wherein the second end face of the elastomeric body is an inclined face, wherein the weighted body has a high end face and a low end face opposite the high end face, wherein the first load bearing groove is located at the low end face, and a depth of the first load bearing groove between the high end face and the low end face gradually increases from the first free end to the second free end such that the elastomeric body at the second end face sits on the first load bearing groove.

14. The belt tensioning device of claim 13, wherein the force receiving body has an outer side and an inner side, wherein the force receiving body extends from the outer side to form an outer channel wall, wherein the force receiving body integrally extends from the inner side to form an inner channel wall, wherein the outer channel wall and the inner channel wall form the first load bearing channel, wherein the outer channel wall gradually decreases in thickness between the outer side and the inner side in the direction from the free end to the free end, wherein the inner channel wall gradually increases in thickness between the outer side and the inner side in the direction from the first free end to the second free end.

15. The drive belt tensioning device of claim 14, wherein the damping member is provided with a second load bearing groove, wherein the portion of the resilient body proximate the second end face is seated in the second load bearing groove to radially twist the resilient member to create a second positive pressure between the second load bearing groove of the second damping member and the resilient body of the resilient member when the drive belt tensioning device is in the loaded state.

16. The drive belt tensioning device of claim 15, wherein the damping assembly includes a damping housing, wherein the damping housing is disposed on the outer side surface and the high end surface of the weighted body.

17. The drive belt tensioning device of any one of claims 1 to 16, wherein the damping assembly is disposed in an arc, wherein the first load bearing slot is disposed in an arc.

18. The belt tensioning device of claim 17, wherein the arc-shaped first load-bearing slot is located on a circumference that is non-concentric with a circumference on which the arc-shaped damping member is located.

19. The drive belt tensioning device of any one of claims 1 to 16, wherein the second load bearing slot is arranged in an arc.

20. A method of operating a belt tensioning device, wherein said method comprises the steps of:

21. The method of operating a belt tensioning device as in claim 20 wherein the method comprises the steps of: when the driving belt tensioning device is in the loading state or the unloading state, the elastic member seated in the first bearing groove presses the damping assembly in any one of a positive pressure direction in which the damping assembly presses against an device main body of the tensioning device and a tangential direction in which the damping assembly moves circumferentially through torsion, so that a first positive pressure is generated between the elastic member and the first bearing groove of the damping assembly.

22. The method of operating a belt tensioning device as in claim 21 wherein the method of operation comprises the steps of: when the driving belt tensioning device is in the loading state, the elastic member seated in a second bearing groove of the damping assembly circumferentially presses against the damping assembly in a twisting manner, so that a second positive pressure is generated between the second bearing groove of the damping assembly and the elastic member.

23. The method of operating a belt tensioning device as claimed in claims 20 to 22 in which the damping assembly is arranged in an arc in which the first and second load bearing slots are each arranged in an arc.

24. The method of operating a belt tensioning device as in claim 23 wherein the arc shaped first load bearing slot is non-concentric with the arc shaped damping member.