Transmission belt tensioning device and fitness equipment

Abstract

The utility model discloses a transmission belt tensioning device and fitness equipment. The transmission belt tensioning device comprises a rotary belt pressing part, a force applying part and a locking part, the rotary belt pressing part comprises a rotary belt pressing plate and a pressing assembly, the rotary belt pressing plate is configured to rotate around the axis of an output shaft of the fitness equipment motor, and the pressing assembly is configured to rotate along with the rotary belt pressing plate so as to abut against the transmission belt and apply tension force to the transmission belt; the force application part is configured to apply force on the rotary belt pressing plate, so that the rotary belt pressing plate rotates, and the pressing assembly is driven to press the transmission belt; and the locking part is used for locking the relative position of the rotary belt pressing plate and the fitness equipment motor. The utility model aims to provide the transmission belt tensioning device and the fitness equipment so as to solve the problems that the internal space of the fitness equipment is limited, the occupied space of a transmission belt tensioning structure is large and the like in the prior art.

Description

Technical Field

[0001] The utility model belongs to the technical field of fitness equipment, and specifically relates to a transmission belt tensioning device and fitness equipment. Background Art

[0002] In fitness equipment that uses multi-V belts, such as elliptical machines, horizontal bikes, and treadmills, when the fitness equipment is used, the multi-V belt pulley rotates, and the multi-V belt runs for a long time, the tension force is affected, and the multi-V belt will stretch and relax.

[0003] The existing multi-V belt tensioning device needs to be set up separately, which takes up a large space. However, the space inside the fitness equipment is limited, and many components and cables need to be arranged, resulting in insufficient space.

[0004] Therefore, developing a transmission belt tensioning device and fitness equipment that can utilize the limited space in the fitness equipment and combine with the original reluctance motor structure to achieve tensioning of the transmission belt is a technical problem that needs to be solved urgently. Utility Model Content

[0005] The purpose of the utility model is to provide a transmission belt tensioning device and fitness equipment to solve the problems existing in the prior art such as limited space in fitness equipment and a large space occupied by the transmission belt tensioning structure.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model adopts the following technical solutions:

[0007] In one aspect, the present invention proposes a transmission belt tensioning device, which includes a rotating belt pressure part, a force-applying part and a locking part; the rotating belt pressure part includes a rotating belt pressure plate and a clamping assembly, the rotating belt pressure plate is configured to rotate around the axis of the output shaft of the fitness equipment motor, and the clamping assembly is configured to rotate with the rotating belt pressure plate to abut against the transmission belt and apply a tensioning force to the transmission belt; the force-applying part is configured to apply a force on the rotating belt pressure plate so that the rotating belt pressure plate rotates and drives the clamping assembly to press on the transmission belt; the locking part is used to lock the relative position of the rotating belt pressure plate and the fitness equipment motor.

[0008] In some embodiments of the present application, a rotating end and a connecting end are formed on the rotating belt pressing plate, the connecting end is rotatable around the rotating end, the rotating mounting hole is provided on the rotating end, the rotating mounting hole is sleeved outside the output shaft of the fitness equipment motor, and the rotating mounting hole is configured to rotate around the axis of the output shaft of the fitness equipment motor;

[0009] An end portion of the force applying portion is connected to the connecting end.

[0010] In some embodiments of the present application, the locking portion includes a plurality of arcuate grooves and a fastening assembly provided on the rotating belt pressure plate, wherein the plurality of arcuate grooves are arranged around the axis of the output shaft of the fitness equipment motor, and the fastening assembly connects the rotating belt pressure plate with the fitness equipment motor through the arcuate grooves; during the rotation of the rotating belt pressure plate relative to the output shaft of the fitness equipment motor, the arcuate groove can move along the fastening assembly; when the rotating belt pressure plate rotates to the target position relative to the output shaft of the fitness equipment motor, the fastening assembly rotates and presses tightly on the rotating belt pressure plate.

[0011] In some embodiments of the present application, the force-applying part includes a tensioning component and an elastic component, and the tensioning component pulls the rotating belt pressing plate to rotate relative to the axis of the output shaft of the fitness equipment motor through the elastic component, so that the clamping component is pressed on the transmission belt.

[0012] In some embodiments of the present application, the tensioning assembly includes a threaded assembly and a fixed bracket, the end of the threaded assembly is connected to the elastic assembly, and the threaded assembly can rotate relative to the fixed bracket to drive the elastic assembly to stretch, so that the elastic assembly pulls the rotating belt pressure plate to rotate, so that the clamping assembly is pressed on the transmission belt.

[0013] In some embodiments of the present application, the clamping assembly includes a plurality of bearings and a fixed shaft, the plurality of bearings are mounted on the fixed shaft, the plurality of bearings are configured to press the transmission belt, and the outer ring diameters of the bearings are equal.

[0014] In some embodiments of the present application, a mounting base is further included, the fixing bracket is arranged on the mounting base, and the fitness equipment motor is arranged on the mounting base.

[0015] In some embodiments of the present application, a mounting base is further included, the fixing bracket is arranged on the mounting base, and the fitness equipment motor is arranged on the mounting base.

[0016] In some embodiments of the present application, a plurality of arcuate slots are arranged at intervals on the same circumference with the axis of the output shaft of the motor of the fitness equipment as the center.

[0017] In another aspect, the present invention further provides a fitness equipment, further comprising any one of the transmission belt tensioning devices described above.

[0018] Compared with the prior art, the advantages and positive effects of the present invention are:

[0019] The force exerted by the force-exerting part pulls the rotary belt pressure plate to rotate, driving the clamping assembly provided on the rotary belt pressure plate to clamp the transmission belt. As the rotary belt pressure plate rotates, the clamping assembly moves to the target position relative to the transmission belt, and the locking part is used to lock the rotary belt pressure plate to the target position, thereby realizing the tensioning of the transmission belt by the clamping assembly; by arranging the rotary belt pressure plate on the motor of the fitness equipment, the purpose of saving space is achieved, thereby making the assembly space of the transmission belt tensioning device and the motor of the fitness equipment more compact, more effectively utilizing the space, and realizing the tensioning of the transmission belt.

[0020] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is one of the partial schematic diagrams of an embodiment of a fitness equipment proposed by the present utility model;

[0023] Figure 2 This is a second partial schematic diagram of an embodiment of a fitness equipment proposed by the present invention;

[0024] Figure 3 This is a third partial schematic diagram of an embodiment of a fitness equipment proposed by the present utility model;

[0025] Figure 4 This is a partial exploded schematic diagram of an embodiment of a fitness equipment proposed by the present utility model;

[0026] Figure 5 This is a structural schematic diagram of an embodiment of a rotary belt-pressing plate of a transmission belt tensioning device proposed by the present utility model;

[0027] Figure 6 This is a structural schematic diagram of an embodiment of a transmission belt tensioning device proposed by the present utility model;

[0028] In the figure,

[0029] 100, rotating belt pressing part;

[0030] 110. Rotating belt pressing plate;

[0031] 111, rotating end;

[0032] 1111, rotating mounting hole;

[0033] 112. Connection terminal;

[0034] 120, compression assembly;

[0035] 121. Bearings;

[0036] 122, fixed axis;

[0037] 123, retaining ring;

[0038] 210, tensioning assembly;

[0039] 211, threaded assembly;

[0040] 2111, stud;

[0041] 2112, nut;

[0042] 212, fixed bracket;

[0043] 2121, through hole;

[0044] 220, elastic component;

[0045] 310, transmission belt;

[0046] 320. Fitness equipment motor;

[0047] 330, output shaft;

[0048] 400, mounting seat;

[0049] 510, arc groove;

[0050] 520. Fastening components. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0052] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0053] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0054] In the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0055] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0056] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or configurations discussed.

[0057] In some embodiments of the present application, Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 6 The figure shows a transmission belt tensioning device, comprising a rotating belt-holding unit 100, a force-applying unit, and a locking unit. The force-applying unit applies force to the rotating belt-holding unit 100, causing it to rotate relative to the transmission belt 310 until it is pressed against the transmission belt 310. The locking unit is used to lock the rotating belt-holding unit 100 and the transmission belt 310 at a target position, thereby tensioning the transmission belt.

[0058] In some embodiments of the present application, Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 As shown, the rotary belt pressing unit 100 includes a rotary belt pressing plate 110 and a pressing assembly 120 .

[0059] The pressing assembly 120 is used to press on the transmission belt 310 to achieve tensioning of the transmission belt 310 .

[0060] The rotary belt pressing plate 110 is configured to be rotatable around the axis of the output shaft 330 of the fitness equipment motor 320 .

[0061] Specifically, the rotating belt pressing plate 110 is sleeved on the output shaft 330 of the motor 320 of the fitness equipment.

[0062] The rotating belt holding plate 110 drives the pressing assembly 120 to rotate, so as to press the transmission belt 310 and apply tension to the transmission belt 310 .

[0063] In some embodiments of the present application, the rotating belt pressing plate 110 is formed with a rotating end 111 and a connecting end 112. When the rotating belt pressing plate 110 rotates relative to the output shaft 330 of the fitness equipment motor 320, the connecting end 112 rotates relative to the rotating end 111.

[0064] like Figure 5 As shown, a rotating mounting hole 1111 is opened on the rotating end 111, and the rotating mounting hole 1111 is sleeved outside the output shaft 330 of the fitness equipment motor 320. The rotating mounting hole 1111 is configured to rotate around the axis of the output shaft 330 of the fitness equipment motor 320.

[0065] The rotating end 111 is directly mounted on the output shaft 330 of the fitness equipment motor 320 to achieve installation with the rotating belt pressing plate 110 , which can save space and reduce the space occupied by the tensioning component.

[0066] The end of the force applying portion is connected to the connecting end 112 . The force applying portion applies force to the rotating end 111 through the connecting end 112 .

[0067] The locking portion includes a plurality of arcuate slots 510 and a fastening assembly 520 formed on the rotating belt pressing plate 110. The plurality of arcuate slots 510 are arranged around the axis of the output shaft 330 of the motor 320 of the fitness equipment.

[0068] The fastening assembly 520 passes through the end of the arc-shaped slot 510 and is threadedly connected to the fitness equipment motor 320 .

[0069] When the fastening assembly 520 is loosened relative to the arc groove 510 and the fitness equipment motor 320, the rotating belt pressing plate 110 rotates relative to the output shaft 330 of the fitness equipment motor 320 until the pressing assembly 120 presses the transmission belt 310, which is the target tensioning position state.

[0070] When the rotating belt pressing plate 110 rotates to the target position relative to the axis of the output shaft 330 of the fitness equipment motor 320, the fastening assembly 520 is tightened relative to the rotating belt pressing plate 110 and the fitness equipment motor 320 to lock the relative position of the two.

[0071] When the rotating end 111 drives the connecting end 112 to rotate relative to the axis of the output shaft 330 of the fitness equipment motor 320 , the arcuate slot 510 and the fastening assembly 520 rotate relative to each other, and the fastening assembly 520 moves relative to each other along the arcuate slot 510 .

[0072] In some embodiments of the present application, the plurality of arc-shaped slots 510 may be arranged at intervals along the same circumference with the axis of the output shaft 330 of the fitness equipment motor 320 as the center.

[0073] In some other embodiments of the present application, the plurality of arc-shaped slots 510 are respectively arranged at different circumferential intervals along the axis of the output shaft 330 of the fitness equipment motor 320 as the center.

[0074] In some embodiments of the present application, the force applying portion includes a tensioning component 210 and an elastic component 220. The tensioning component 210 pulls the connecting end 112 to rotate relative to the rotating end 111 through the elastic component 220.

[0075] The rotating end 111 rotates relative to the axis of the output shaft 330 of the fitness equipment motor 320 , thereby driving the pressing assembly 120 to press onto the transmission belt 310 .

[0076] In some embodiments of the present application, the tensioning assembly 210 includes a threaded assembly 211 and a fixed bracket 212. The end of the threaded assembly 211 is connected to an elastic assembly 220. As the threaded assembly 211 rotates relative to the fixed bracket 212, it stretches the elastic assembly 220, thereby applying tension to the connecting end 112. The connecting end 112 rotates relative to the rotating end 111 until the pressing assembly 120 presses against the transmission belt 310.

[0077] In some embodiments of the present application, a through hole 2121 is defined in the fixing bracket 212 .

[0078] The threaded assembly 211 includes a stud 2111 and a nut 2112 .

[0079] The stud 2111 passes through the through hole 2121 and is threadedly connected to the nut 2112 .

[0080] The nut 2112 is connected to the fixing bracket 212 .

[0081] Specifically, the nut 2112 is connected to the outlet of the through hole 2121 of the fixing bracket 212 .

[0082] One end of the stud 2111 is connected to the elastic component 220 after passing through the through hole 2121 .

[0083] In some other embodiments of the present application, there are two nuts 2112 , which are respectively connected to outlets of the through hole 2121 at both ends of the fixing bracket 212 .

[0084] The stud 2111 is screwed into the nut 2112 at one end of the through hole 2121 , and then screwed into the through hole 2121 . After passing through the through hole 2121 , the stud 2111 is threadedly connected with the other nut 2112 .

[0085] In some embodiments of the present application, the fixing bracket 212 and the fitness equipment motor 320 are fixedly arranged relative to each other.

[0086] Specifically, the transmission belt tensioning device further includes a mounting base 400. The fixing bracket 212 is disposed on the mounting base 400. The fitness equipment motor 320 is also disposed on the mounting base 400.

[0087] In some embodiments of the present application, one end of the elastic component 220 is connected to the connecting end 112 , and the other end of the elastic component 220 is connected to the end of the stud 2111 .

[0088] Specifically, the elastic component 220 can be a spring. The tensioning component 210 tensions the elastic component 220 in a stretched state, thereby enabling the elastic component 220 to tighten the connecting end 112, so that the pressing component 120 is pressed against the transmission belt 310, so that the transmission belt 310 is in a tensioned state.

[0089] During use, when the transmission belt 310 stretches and relaxes, the tensioning component 210 is rotated to further pull the elastic component 220, so that the elastic component 220 further pulls the connecting end 112 to rotate around the rotating end 111, so that the clamping component 120 further compresses the transmission belt 310, further tensioning the transmission belt 310.

[0090] In some embodiments of the present application, the pressing assembly 120 includes a plurality of bearings 121 and a fixed shaft 122. The plurality of bearings 121 are mounted on the fixed shaft 122. The plurality of bearings 121 are configured to press the transmission belt 310 to prevent the transmission belt 310 from loosening or slipping.

[0091] One end of the fixed shaft 122 is connected to the rotating belt holding plate 110 .

[0092] In some embodiments of the present application, the bearing 121 is a radial bearing that bears radial loads, such as a deep groove ball bearing, a tapered roller bearing, and the like.

[0093] The rotating belt-holding plate 110 directly presses the drive belt 310 via multiple bearings 121. The inner ring of the bearing 121 is connected to the fixed shaft 122, while the outer ring of the bearing 121 rubs against the drive belt 310. The bearings 121 are standard components, making assembly easy. Their high structural stability and low coefficient of friction facilitate the stable operation of the drive belt 310. The use of multiple bearings 121 allows the outer rings to overlap, increasing the axial contact area to accommodate the width of the drive belt 310, ensuring that the edge of the belt 310 does not deviate from the bearings 121.

[0094] Specifically, the rotating belt pressing plate 110 and the fixed shaft 122 can be fixedly connected together by welding, bonding, threaded connection, integral molding, etc.

[0095] Multiple bearings 121 are coaxially mounted on a fixed shaft 122. The outer diameters of the bearings 121 are equal. Each bearing 121 is capable of pressing against the transmission belt 310. The inner rings of the bearings 121 are adapted to fit within the fixed shaft 122. A positioning structure or component can be provided on the fixed shaft 122 to define the positions of the bearings 121 and prevent them from axially moving on the fixed shaft 122.

[0096] In some embodiments of the present application, the fixed shaft 122 can be processed into a stepped shaft, which includes multiple shaft segments of different diameters, with stepped surfaces formed between the shaft segments. The stepped surfaces can define the installation position of the bearing 121. Positioning components such as a retaining ring 123 and a sleeve can be installed on the fixed shaft 122 to define the position of the bearing 121.

[0097] In some embodiments of the present application, a plurality of bearings 121 are arranged at intervals on a fixed shaft 122, and the plurality of bearings 121 are configured to simultaneously press the transmission belt 310. The plurality of bearings 121 are spaced vertically apart and rotate independently of each other without affecting each other. There are gaps between the spaced bearings 121, which can increase the axial width, prevent the edge of the transmission belt 310 from exceeding the circumference of the outer ring of the bearing 121, prevent the transmission belt 310 from deviating from the bearing 121, and reduce the friction area, thereby reducing the wear of the transmission belt 310. Furthermore, a certain gap is also left between the bearing 121 close to the rotating belt pressure plate 110 and the rotating belt pressure plate 110 to avoid friction resistance between the rotating belt pressure plate 110 and the outer ring of the bearing 121.

[0098] In some embodiments of the present application, a spacer is provided between adjacent bearings 121, and the spacer is mounted on the fixed shaft 122. The spacer can limit the relative position of two adjacent bearings 121, so that adjacent bearings 121 are spaced a certain distance apart, and the outer rings of the bearings 121 can rotate independently of each other.

[0099] A spacer is also provided between the bearing 121 close to the rotating belt press plate 110 and the rotating belt press plate 110 , thereby determining the axial distance between the bearing 121 close to the rotating belt press plate 110 and the rotating belt press plate 110 .

[0100] Specifically, the transmission belt 310 may be a poly-V belt.

[0101] In some other embodiments of the present application, a fitness equipment is provided, comprising the above-mentioned transmission belt tensioning device.

[0102] Specifically, the fitness equipment can be an elliptical machine, a recumbent bike, or a treadmill.

[0103] The force exerted by the force-applying part is provided to pull the rotary pressure plate 110 to rotate, thereby driving the clamping assembly 120 provided on the rotary pressure plate 110 to press on the transmission belt 310. As the rotary pressure plate 110 rotates, when the clamping assembly 120 moves to the target position relative to the transmission belt 310, the locking part is used to lock the rotary pressure plate 110 to the target position, thereby achieving the tensioning of the transmission belt 310 by the clamping assembly 120; by arranging the rotary pressure plate 110 on the fitness equipment motor 320, the purpose of saving space is achieved, thereby making the assembly space of the transmission belt tensioning device and the fitness equipment motor more compact, more effectively utilizing the space, and achieving tensioning of the transmission belt.

[0104] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0105] Wherever possible, the various aspects and features described and illustrated in this specification may be applied separately, and these separate aspects may be the subject of divisional applications.

[0106] The above is only a specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A transmission belt tensioning device, characterized in that: include: A rotating belt-pressing portion, comprising a rotating belt-pressing plate and a pressing assembly, wherein the rotating belt-pressing plate is configured to rotate about the axis of the output shaft of the fitness equipment motor, and the pressing assembly is configured to rotate with the rotating belt-pressing plate to abut against the transmission belt and apply tension to the transmission belt; a force applying portion configured to apply a force on the rotating belt holding plate to rotate the rotating belt holding plate, thereby driving the pressing assembly to press against the transmission belt; The locking portion is used to lock the relative position of the rotating belt pressing plate and the motor of the fitness equipment.

2. The transmission belt tensioning device according to claim 1, characterized in that: The rotating belt pressing plate is formed with a rotating end and a connecting end, the connecting end is rotatable around the rotating end, a rotating mounting hole is provided on the rotating end, the rotating mounting hole is sleeved outside the output shaft of the fitness equipment motor, and the rotating mounting hole is configured to rotate around the axis of the output shaft of the fitness equipment motor; An end portion of the force applying portion is connected to the connecting end.

3. The transmission belt tensioning device according to claim 1, characterized in that: The locking portion includes a plurality of arcuate grooves and a fastening assembly provided on the rotating belt pressure plate. The plurality of arcuate grooves are arranged around the axis of the output shaft of the fitness equipment motor. The fastening assembly passes through the arcuate grooves to connect the rotating belt pressure plate with the fitness equipment motor. During the rotation of the rotating belt pressure plate relative to the output shaft of the fitness equipment motor, the arcuate grooves can move along the fastening assembly. When the rotating belt pressure plate rotates to a target position relative to the output shaft of the fitness equipment motor, the fastening assembly rotates and presses on the rotating belt pressure plate.

4. The transmission belt tensioning device according to claim 1, characterized in that: The force applying part includes a tensioning component and an elastic component. The tensioning component pulls the rotating belt pressing plate to rotate relative to the axis of the output shaft of the fitness equipment motor through the elastic component, so that the pressing component is pressed on the transmission belt.

5. The transmission belt tensioning device according to claim 4, characterized in that: The tensioning assembly includes a threaded assembly and a fixed bracket. The end of the threaded assembly is connected to the elastic assembly. The threaded assembly can rotate relative to the fixed bracket to drive the elastic assembly to stretch, so that the elastic assembly pulls the rotating belt pressing plate to rotate, so that the clamping assembly is pressed on the transmission belt.

6. The transmission belt tensioning device according to claim 1, characterized in that: The pressing assembly includes a plurality of bearings and a fixed shaft. The plurality of bearings are mounted on the fixed shaft. The plurality of bearings are configured to press the transmission belt, and the outer rings of the bearings have the same diameter.

7. The transmission belt tensioning device according to claim 5, characterized in that: It also includes a mounting seat, the fixing bracket is arranged on the mounting seat, and the fitness equipment motor is arranged on the mounting seat.

8. The transmission belt tensioning device according to claim 5, characterized in that: The threaded assembly includes a stud and a nut. A through hole is provided on the fixing bracket. The nut is connected to the fixing bracket at the through hole. The stud passes through the through hole and is threadedly connected to the fixing nut. During the rotation of the stud relative to the nut, the stud drives the elastic assembly to elastically deform.

9. The transmission belt tensioning device according to claim 5, characterized in that: The plurality of arc-shaped slots are arranged at intervals on the same circumference with the axis of the output shaft of the motor of the fitness equipment as the center.

10. A fitness equipment, characterized in that: include: A drive belt tensioner as claimed in any one of claims 1 to 9.

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