A treadmill frame

By designing an incline adjustment mechanism on the treadmill frame and using an electric push rod and a variable frequency motor, the incline of the mounting frame can be adjusted, solving the problem of the non-adjustable incline of existing treadmills and increasing the fun and user adaptability.

CN224292425UActive Publication Date: 2026-05-29BEIJING RUIQIXIANG SPORTS TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING RUIQIXIANG SPORTS TECH CO LTD
Filing Date
2024-12-03
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

The incline of existing treadmills is not adjustable, which makes them unable to meet the needs of different users and reduces their enjoyment.

Method used

Design a treadmill frame that includes an incline adjustment mechanism. Driven by an electric push rod and a variable frequency motor, the incline of the frame can be adjusted to mimic cross-country running.

Benefits of technology

The installation frame slope is adjustable between negative and positive slopes to meet the needs of different users and increase the fun of exercise.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a treadmill frame, solve the present part treadmill slope not adjustable, lead to cannot satisfy different user demand, and the interesting lower technical problem. Including mounting bracket, be located on the drive mechanism of mounting bracket and be located on the slope adjusting mechanism of one end of mounting bracket. The utility model makes mounting bracket can be in the pitch direction adjustment slope, when the jacking mounting bracket is parallel to the ground of mounting bracket, then one end of mounting bracket is lifted upward, and the slope of one end of mounting bracket from horizontal plane is positive slope, when the pressing down mounting bracket is parallel to the ground of mounting bracket, then one end of mounting bracket is pressed down, and the slope of one end of mounting bracket from horizontal plane is negative slope, so, can according to user demand, make mounting bracket slope change and adjust in the range between negative slope and positive slope, to imitate cross-country running, satisfy different user demand's simultaneously, increased the interesting nature.
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Description

Technical Field

[0001] This utility model belongs to the field of fitness equipment technology, specifically relating to a treadmill frame. Background Technology

[0002] Running is an aerobic exercise that enhances cardiovascular function, improves physical endurance, and is beneficial to human health. The advent of treadmills has made running no longer limited by external weather, location, or terrain; people can run on a treadmill, achieving the goal of exercising without leaving home, greatly facilitating people's lives and saving time spent outdoors. However, some existing treadmills are horizontal and have non-adjustable incline, only offering a flat-ground running mode, which cannot meet the needs of different users and has a lower level of enjoyment. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a treadmill frame to solve the technical problem that some existing treadmills have non-adjustable incline, which makes them unable to meet the needs of different users and have low fun.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A treadmill frame includes a mounting frame and a running belt, and further includes a drive mechanism disposed on the mounting frame for driving the running belt to run, and an incline adjustment mechanism disposed on one end of the mounting frame; the incline adjustment mechanism includes a support plate with one end slidably supported on the ground and the other end rotatably disposed on the bottom of the mounting frame, and a mounting frame drive mechanism disposed on the support plate and connected to the mounting frame to drive one end of the mounting frame to run.

[0006] Furthermore, the mounting bracket drive mechanism includes two electric push rods rotatably mounted on the support plate and connected to the mounting bracket; the electric push rods are connected to the mounting bracket via extension rods.

[0007] Furthermore, the mounting frame is provided with two parallel mounting plates, and a connecting seat is provided between the two mounting plates. The electric push rod is installed at an angle between the connecting seat and the support plate. The mounting frame is provided with a clearance slot that matches the electric push rod. The electric push rod passes through the clearance slot and connects to the connecting seat.

[0008] Furthermore, the support plate has an installation groove, and a connecting plate is installed in the installation groove. The electric push rod is rotatably connected to the connecting plate.

[0009] Furthermore, two rollers are provided on one end of the support plate, and a connecting rod is fixedly provided on the other end of the support plate. Two bearing seats are provided on the connecting rod, and bearings are provided inside the bearing seats. The connecting rod is fixedly inserted into the bearings. The rollers are slidably supported on the ground, and the bearing seats are fixedly connected to the bottom of the mounting frame.

[0010] Furthermore, the bottom of the other end of the mounting bracket is provided with a support leg that rests on the ground, with the roller and the support leg on the same horizontal plane.

[0011] Furthermore, the drive mechanism includes a variable frequency motor mounted on one end of the mounting frame, a transmission roller rotatably mounted on one end of the mounting frame and connected to the drive shaft of the variable frequency motor, and a support roller rotatably mounted on the other end of the mounting frame.

[0012] Furthermore, a drive pulley is connected to the drive shaft of the variable frequency motor, a driven pulley is provided on one end of the transmission drum, a transmission belt is sleeved between the drive pulley and the driven pulley, and a tensioning mechanism for tensioning the transmission belt is provided on the mounting frame.

[0013] Furthermore, the tensioning mechanism includes a first support frame mounted on the mounting bracket, a threaded rod threadedly connected to the first support frame, a second support frame fixedly mounted at the bottom of the threaded rod and located within the first support frame, and a tensioning wheel rotatably mounted on the second support frame and adapted to the drive belt.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This utility model features a simple structure, a scientific and reasonable design, and convenient use. It incorporates a slope adjustment mechanism, allowing the mounting frame to be adjusted in the tilt direction. When the mounting frame is parallel to the ground, the mechanism lifts it, raising one end upwards, creating a positive slope at that end. This positive slope gradually increases as the mechanism lifts the frame. Conversely, when the mounting frame is parallel to the ground, the mechanism lowers it, lowering one end downwards, creating a negative slope at that end. Thus, the slope can be adjusted within a range from positive to negative according to user needs, mimicking cross-country running and satisfying different user requirements while adding to the enjoyment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model (the treadmill belt is not shown).

[0017] Figure 2 This is a schematic diagram showing the electric actuator connected between the connecting seat and the support plate.

[0018] Figure 3 This is a schematic diagram of the mounting bracket of this utility model when it is parallel to the ground.

[0019] Figure 4 This is a schematic diagram showing the connection between the mounting bracket and the support plate.

[0020] Figure 5This is a schematic diagram showing the electric actuator connected between two connecting plates on the support plate.

[0021] Figure 6 This is a schematic diagram of the tensioning mechanism for the tensioning transmission belt.

[0022] Figure 7 A schematic diagram showing the electric actuator rotating and passing through a support rod.

[0023] Figure 8 A schematic diagram showing the tensioning wheel rotating on the second support frame.

[0024] Figure 9 This is a top view of the support rod being fixed between two connecting plates.

[0025] Figure 10 This is a schematic diagram showing the threaded rod confined within the limiting cylinder.

[0026] Figure 11 This is a schematic diagram of a running belt being fitted onto a drive roller and a support roller.

[0027] The names corresponding to the reference numerals in the attached figures are as follows:

[0028] 1-Mounting bracket, 2-Support plate, 3-Electric push rod, 4-Second support frame, 5-Roller, 6-Connecting rod, 7-Bearing seat, 8-Mounting plate, 9-Leaning slot, 11-Outrigger, 12-Mounting slot, 13-Connecting plate, 14-Drive roller, 15-Support roller, 16-Drive pulley, 17-Driven pulley, 18-Drive belt, 19-First support frame, 20-Threaded rod, 21-Tensioning wheel, 22-Variable frequency motor, 23-Connecting seat, 24-Mounting through hole, 25-Support rod, 26-Bearing, 28-First limit block, 35-Protective shell, 36-Limiting cylinder, 37-Limiting cavity, 38-Second limit block, 39-Running belt. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; of course, they can also refer to a mechanical connection or an electrical connection; furthermore, they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Example 1

[0033] like Figure 1-11 As shown, the present invention provides a treadmill frame, including a mounting frame 1 and a running belt, and further including a drive mechanism disposed on the mounting frame 1 for driving the running belt to run, and an incline adjustment mechanism disposed on one end of the mounting frame 1; the incline adjustment mechanism includes a support plate 2 with one end slidably supported on the ground and the other end rotatably disposed at the bottom of the mounting frame 1, and a mounting frame drive mechanism disposed on the support plate 2 and connected to the mounting frame 1 to drive one end of the mounting frame 1 to run.

[0034] This utility model features a simple structure, a scientific and reasonable design, and convenient use. It incorporates a slope adjustment mechanism, allowing the mounting frame to be adjusted in both tilt and pitch directions. When the mounting frame is parallel to the ground, the mechanism lifts it, raising one end upwards, creating a positive slope at that end. This positive slope gradually increases as the mechanism lifts the frame. Conversely, when the mounting frame is parallel to the ground, the mechanism lowers it, lowering one end downwards, creating a negative slope at that end. Thus, the slope can be adjusted within a range from positive to negative according to user needs, mimicking cross-country running and satisfying different user requirements while adding to the enjoyment.

[0035] In use, the running belt for supporting a person running is fitted between the drive roller and the support roller. The mounting frame 1 is equipped with a protective shell 35 to prevent injury from the variable frequency motor 22 and other devices mounted on the mounting frame 1 during operation.

[0036] This novel dual-electric push rod structure makes the mounting bracket 1 more stable, reduces vibration, and provides accurate slope adjustment for the mounting bracket 1.

[0037] Example 2

[0038] like Figure 1-11 As shown, the present invention provides a treadmill frame, including a mounting frame 1 and a running belt, and further including a drive mechanism disposed on the mounting frame 1 for driving the running belt to run, and an incline adjustment mechanism disposed on one end of the mounting frame 1; the incline adjustment mechanism includes a support plate 2 with one end slidably supported on the ground and the other end rotatably disposed at the bottom of the mounting frame 1, and a mounting frame drive mechanism disposed on the support plate 2 and connected to the mounting frame 1 to drive one end of the mounting frame 1 to run.

[0039] The mounting bracket drive mechanism includes two electric push rods 3 that are rotatably mounted on the support plate 2 and connected to the mounting bracket 1; the telescopic rods of the electric push rods 3 are connected to the mounting bracket 1.

[0040] In this embodiment 2, when it is necessary to lift the mounting frame, the electric push rod 3 is activated. The telescopic rod of the electric push rod 3 extends away from the ground. The extended telescopic rod pushes the connecting seat 23 to move away from the ground. The connecting seat 23 drives one end of the mounting frame 1 to move away from the ground, and one end of the mounting frame 1 is lifted.

[0041] When it is necessary to lower the mounting bracket, start the electric push rod 3. The telescopic rod of the electric push rod 3 shortens towards the ground. The shortened telescopic rod pulls the connecting seat 23 towards the ground. The connecting seat 23 drives one end of the mounting bracket 1 to move towards the ground, so that one end of the mounting bracket 1 can be lowered.

[0042] When the mounting frame is parallel to the ground, raising it creates a positive slope, which gradually increases as the frame is raised. Conversely, when the mounting frame is parallel to the ground, lowering it creates a negative slope.

[0043] During the process of lifting the mounting frame 1, when one end of the mounting frame 1 moves away from the ground, the connecting rod 6 on the support plate 2 rotates synchronously at the bottom of the mounting frame 1, and the roller 5 on the support plate 2 slides synchronously towards the other end of the mounting frame 1 on the ground.

[0044] During the process of lowering the mounting frame 1, when one end of the mounting frame 1 moves towards the ground, the connecting rod 6 on the support plate 2 rotates synchronously at the bottom of the mounting frame 1, and the roller 5 on the support plate 2 slides synchronously away from the other end of the mounting frame 1 on the ground.

[0045] Example 3

[0046] like Figure 1-11 As shown, the present invention provides a treadmill frame, including a mounting frame 1 and a running belt 39, and also includes a drive mechanism disposed on the mounting frame 1 for driving the running belt to run, and an incline adjustment mechanism disposed on one end of the mounting frame 1; the incline adjustment mechanism includes a support plate 2 with one end slidably supported on the ground and the other end rotatably disposed at the bottom of the mounting frame 1, and a mounting frame drive mechanism disposed on the support plate 2 and connected to the mounting frame 1 to drive one end of the mounting frame 1 to run.

[0047] The mounting bracket drive mechanism includes two electric push rods 3 that are rotatably mounted on the support plate 2 and connected to the mounting bracket 1; the telescopic rods of the electric push rods 3 are connected to the mounting bracket 1.

[0048] The mounting bracket 1 has two parallel mounting plates 8, and a connecting seat 23 is provided between the two mounting plates 8. The electric push rod 3 is installed at an angle between the connecting seat 23 and the support plate 2. The mounting bracket 1 has a clearance slot 9 that is adapted to the electric push rod 3. The electric push rod 3 passes through the clearance slot 9 and is connected to the connecting seat 23.

[0049] In this embodiment 3, the electric push rod 3 is connected to the connecting seat 23 via its telescopic rod.

[0050] Example 4

[0051] like Figure 1-11 As shown, the present invention provides a treadmill frame, including a mounting frame 1 and a running belt, and further including a drive mechanism disposed on the mounting frame 1 for driving the running belt to run, and an incline adjustment mechanism disposed on one end of the mounting frame 1; the incline adjustment mechanism includes a support plate 2 with one end slidably supported on the ground and the other end rotatably disposed at the bottom of the mounting frame 1, and a mounting frame drive mechanism disposed on the support plate 2 and connected to the mounting frame 1 to drive one end of the mounting frame 1 to run.

[0052] The mounting bracket drive mechanism includes two electric push rods 3 that are rotatably mounted on the support plate 2 and connected to the mounting bracket 1; the telescopic rods of the electric push rods 3 are connected to the mounting bracket 1.

[0053] The mounting bracket 1 has two parallel mounting plates 8, and a connecting seat 23 is provided between the two mounting plates 8. The electric push rod 3 is installed at an angle between the connecting seat 23 and the support plate 2. The mounting bracket 1 has a clearance slot 9 that is adapted to the electric push rod 3. The electric push rod 3 passes through the clearance slot 9 and is connected to the connecting seat 23.

[0054] The support plate 2 has an installation groove 12, and a connecting plate 13 is provided in the installation groove 12. The electric push rod 3 is rotatably connected to the connecting plate 13.

[0055] In this embodiment 4, there are four connecting plates 13 in the mounting groove 12. Each electric push rod 3 is connected to two connecting plates 13. The connecting plate 13 is provided with a mounting through hole 24. A support rod 25 is fixedly connected in the mounting through hole 24 of the corresponding two connecting plates 13. A first limiting block 28 is provided on one end of the support rod 25 that extends out of the mounting through hole 24. The electric push rod 3 rotates through the support rod 25.

[0056] Example 5

[0057] like Figure 1-11 As shown, the present invention provides a treadmill frame, including a mounting frame 1 and a running belt, and further including a drive mechanism disposed on the mounting frame 1 for driving the running belt to run, and an incline adjustment mechanism disposed on one end of the mounting frame 1; the incline adjustment mechanism includes a support plate 2 with one end slidably supported on the ground and the other end rotatably disposed at the bottom of the mounting frame 1, and a mounting frame drive mechanism disposed on the support plate 2 and connected to the mounting frame 1 to drive one end of the mounting frame 1 to run.

[0058] Two rollers 5 are provided on one end of the support plate 2, and a connecting rod 6 is fixedly provided on the other end of the support plate 2. Two bearing seats 7 are provided on the connecting rod 6, and bearings 26 are provided inside the bearing seats 7. The connecting rod 6 is fixedly inserted into the bearings 26. The rollers 5 are slidably supported on the ground, and the bearing seats 7 are fixedly connected to the bottom of the mounting frame 1.

[0059] In this embodiment 5, two rollers 5 are provided on one end of the support plate 2. This makes it easier for one end of the support plate 2 to slide on the ground during the process of raising or lowering the mounting frame 1, reducing sliding resistance. The connecting rod 6 is fixedly inserted into the bearing 26, so that the connecting rod 6 can rotate when an external force is applied to it.

[0060] Example 6

[0061] like Figure 1-11 As shown, the present invention provides a treadmill frame, including a mounting frame 1 and a running belt, and further including a drive mechanism disposed on the mounting frame 1 for driving the running belt to run, and an incline adjustment mechanism disposed on one end of the mounting frame 1; the incline adjustment mechanism includes a support plate 2 with one end slidably supported on the ground and the other end rotatably disposed at the bottom of the mounting frame 1, and a mounting frame drive mechanism disposed on the support plate 2 and connected to the mounting frame 1 to drive one end of the mounting frame 1 to run.

[0062] Two rollers 5 are provided on one end of the support plate 2, and a connecting rod 6 is fixedly provided on the other end of the support plate 2. Two bearing seats 7 are provided on the connecting rod 6, and bearings 26 are provided inside the bearing seats 7. The connecting rod 6 is fixedly inserted into the bearings 26. The rollers 5 are slidably supported on the ground, and the bearing seats 7 are fixedly connected to the bottom of the mounting frame 1.

[0063] The bottom of the other end of the mounting bracket 1 is provided with a support leg 11 that is supported on the ground, and the roller 5 and the support leg 11 are on the same horizontal plane.

[0064] In this embodiment 6, during the adjustment of the slope of the mounting frame 1, the support leg 11 remains on the ground at all times. This ensures that the mounting frame 1 remains stable.

[0065] Example 7

[0066] like Figure 1-11 As shown, the present invention provides a treadmill frame, including a mounting frame 1 and a running belt, and further including a drive mechanism disposed on the mounting frame 1 for driving the running belt to run, and an incline adjustment mechanism disposed on one end of the mounting frame 1; the incline adjustment mechanism includes a support plate 2 with one end slidably supported on the ground and the other end rotatably disposed at the bottom of the mounting frame 1, and a mounting frame drive mechanism disposed on the support plate 2 and connected to the mounting frame 1 to drive one end of the mounting frame 1 to run.

[0067] The drive mechanism includes a variable frequency motor 22 mounted on one end of the mounting frame 1, a transmission roller 14 rotatably mounted on one end of the mounting frame 1 and connected to the drive shaft of the variable frequency motor 22, and a support roller 15 rotatably mounted on the other end of the mounting frame 1. The two ends of the running belt are respectively fitted onto the transmission roller 14 and the support roller 15.

[0068] In this embodiment 7, when the present invention is used, the running belt for supporting a person running is sleeved and installed between the drive roller and the support roller. The reciprocating motion of the running belt is driven by the variable frequency motor 22. The principle is as follows: when the variable frequency motor 22 starts, the drive shaft of the variable frequency motor 22 transmits the motion to the drive roller 14. The drive roller 14 rotates, which drives the running belt to move. The running belt drives the support roller 15 to rotate, and the running belt reciprocates between the drive roller 14 and the support roller 15. The support roller 15 is used to support and tension the running belt, so that the reciprocating motion of the running belt between the drive roller 14 and the support roller 15 can be realized.

[0069] Example 8

[0070] like Figure 1-11As shown, the present invention provides a treadmill frame, including a mounting frame 1 and a running belt, and further including a drive mechanism disposed on the mounting frame 1 for driving the running belt to run, and an incline adjustment mechanism disposed on one end of the mounting frame 1; the incline adjustment mechanism includes a support plate 2 with one end slidably supported on the ground and the other end rotatably disposed at the bottom of the mounting frame 1, and a mounting frame drive mechanism disposed on the support plate 2 and connected to the mounting frame 1 to drive one end of the mounting frame 1 to run.

[0071] The drive mechanism includes a variable frequency motor 22 mounted on one end of the mounting frame 1, a transmission roller 14 rotatably mounted on one end of the mounting frame 1 and connected to the drive shaft of the variable frequency motor 22, and a support roller 15 rotatably mounted on the other end of the mounting frame 1. The two ends of the running belt are respectively fitted onto the transmission roller 14 and the support roller 15.

[0072] A drive pulley 16 is connected to the drive shaft of the variable frequency motor 22, and a driven pulley 17 is provided on one end of the transmission drum 14. A transmission belt 18 is sleeved between the drive pulley 16 and the driven pulley 17. A tensioning mechanism for tensioning the transmission belt 18 is provided on the mounting frame 1.

[0073] In this embodiment 8, the variable frequency motor 22 and the transmission drum 14 transmit motion through the cooperation of the driving pulley 16, the driven pulley 17, and the transmission belt 18. The principle is as follows: When the variable frequency motor 22 starts, its drive shaft rotates the driving pulley 16, which in turn drives the transmission belt 18. The transmission belt 18 then drives the driven pulley 17 to rotate, and the transmission belt 18 reciprocates between the driving pulley 16 and the driven pulley 17. The driven pulley 17 supports the transmission belt 18 to facilitate motion transmission between the driving pulley 16 and the transmission belt 18. A tensioning mechanism tensions the transmission belt 18, which is beneficial for its reciprocating motion between the driving pulley 16 and the driven pulley 17.

[0074] Example 9

[0075] like Figure 1-11 As shown, the present invention provides a treadmill frame, including a mounting frame 1 and a running belt, and further including a drive mechanism disposed on the mounting frame 1 for driving the running belt to run, and an incline adjustment mechanism disposed on one end of the mounting frame 1; the incline adjustment mechanism includes a support plate 2 with one end slidably supported on the ground and the other end rotatably disposed at the bottom of the mounting frame 1, and a mounting frame drive mechanism disposed on the support plate 2 and connected to the mounting frame 1 to drive one end of the mounting frame 1 to run.

[0076] The drive mechanism includes a variable frequency motor 22 mounted on one end of the mounting frame 1, a transmission roller 14 rotatably mounted on one end of the mounting frame 1 and connected to the drive shaft of the variable frequency motor 22, and a support roller 15 rotatably mounted on the other end of the mounting frame 1. The two ends of the running belt are respectively fitted onto the transmission roller 14 and the support roller 15.

[0077] A drive pulley 16 is connected to the drive shaft of the variable frequency motor 22, and a driven pulley 17 is provided on one end of the transmission drum 14. A transmission belt 18 is sleeved between the drive pulley 16 and the driven pulley 17. The mounting frame 1 is provided with a tensioning mechanism for tensioning the transmission belt 18.

[0078] The tensioning mechanism includes a first support frame 19 mounted on the mounting bracket 1, a threaded rod 20 threadedly connected to the first support frame 19, a second support frame 4 fixedly mounted at the bottom of the threaded rod 20 and located within the first support frame 19, and a tensioning wheel 21 rotatably mounted on the second support frame 4 and adapted to the transmission belt 18.

[0079] In this embodiment 9, the transmission belt 18 is attached to the bottom of the tensioning pulley 21. By turning the threaded rod 20, the threaded rod 20 extends downward. During the extension of the threaded rod 20, it drives the second support frame 4 to move downward. The second support frame 4 drives the tensioning pulley 21 to move synchronously. The downward-moving tensioning pulley 21 gradually tensions the transmission belt 18, making the transmission belt 18 taut. This facilitates the reciprocating movement of the transmission belt 18 between the driving pulley 16 and the driven pulley 17.

[0080] The second support frame 4 is provided with a limiting cylinder 36, and a threaded rod 20 is movably inserted into the limiting cylinder 36. The limiting cylinder 36 has a limiting cavity 37, and the threaded rod 20 has a second limiting block 38 that matches the limiting cavity 37. The second limiting block 38 is confined within the limiting cavity 37. The threaded rod 20 and the limiting cylinder 36 are in clearance fit. The second limiting block 38 and the limiting cavity 37 are also in clearance fit. The second limiting block 38 can rotate within the limiting cavity 37.

[0081] During the process of turning the threaded rod 20, the limiting sleeve 36 ensures that the threaded rod 20 transmits its motion to the second support frame 4 without affecting the downward extension of the threaded rod 20.

[0082] The electric push rod 3 and the variable frequency motor 22 used in this invention are both existing known electrical devices and can be purchased and used directly on the market. The structure, circuit and control principle of the electric push rod 3 and the variable frequency motor 22 are all existing known technologies. Therefore, the structure, circuit and control principle of the single electric push rod 3 and the variable frequency motor 22 will not be described in detail here.

[0083] Finally, it should be noted that the above embodiments are merely preferred embodiments of this utility model used to illustrate the technical solutions of this utility model, and are not intended to limit it, nor are they intended to limit the patent scope of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. That is to say, any changes or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but whose technical problems are still consistent with those of this utility model, should be included within the protection scope of this utility model. In addition, the direct or indirect application of the technical solutions of this utility model to other related technical fields are similarly included within the patent protection scope of this utility model.

Claims

1. A treadmill frame, comprising a mounting bracket (1) and a running belt, characterized in that, It also includes a drive mechanism mounted on the mounting frame (1) for driving the running belt, and a slope adjustment mechanism mounted on one end of the mounting frame (1); the slope adjustment mechanism includes a support plate (2) with one end slidably supported on the ground and the other end rotatably mounted on the bottom of the mounting frame (1), and a mounting frame drive mechanism mounted on the support plate (2) and connected to the mounting frame (1) to drive one end of the mounting frame (1) to run. The mounting bracket drive mechanism includes two electric push rods (3) that are rotatably mounted on the support plate (2) and connected to the mounting bracket (1); the electric push rods (3) are telescopic rods connected to the mounting bracket (1).

2. A treadmill frame according to claim 1, characterized in that, The mounting bracket (1) has two parallel mounting plates (8), and a connecting seat (23) is provided between the two mounting plates (8). The electric push rod (3) is installed at an angle between the connecting seat (23) and the support plate (2). The mounting bracket (1) has a clearance slot (9) that is compatible with the electric push rod (3). The electric push rod (3) passes through the clearance slot (9) and connects to the connecting seat (23).

3. A treadmill frame according to claim 2, characterized in that, The support plate (2) has an installation groove (12) and a connecting plate (13) is provided in the installation groove (12). The electric push rod (3) is rotatably connected to the connecting plate (13).

4. A treadmill frame according to claim 1, characterized in that, Two rollers (5) are provided on one end of the support plate (2), and a connecting rod (6) is fixedly provided on the other end of the support plate (2). Two bearing seats (7) are provided on the connecting rod (6), and a bearing (26) is provided inside the bearing seat (7). The connecting rod (6) is fixedly inserted into the bearing (26). The rollers (5) are slidably supported on the ground, and the bearing seats (7) are fixedly connected to the bottom of the mounting frame (1).

5. A treadmill frame according to claim 4, characterized in that, The bottom of the other end of the mounting bracket (1) is provided with a support leg (11) that is supported on the ground. The roller (5) and the support leg (11) are on the same horizontal plane.

6. A treadmill frame according to claim 1, characterized in that, The drive mechanism includes a variable frequency motor (22) mounted on one end of the mounting frame (1), a drive roller (14) mounted on one end of the mounting frame (1) and connected to the drive shaft of the variable frequency motor (22), and a support roller (15) mounted on the other end of the mounting frame (1). The two ends of the running belt are respectively fitted onto the drive roller (14) and the support roller (15).

7. A treadmill frame according to claim 6, characterized in that, A drive pulley (16) is connected to the drive shaft of the variable frequency motor (22), a driven pulley (17) is provided on one end of the transmission drum (14), a transmission belt (18) is sleeved between the drive pulley (16) and the driven pulley (17), and a tensioning mechanism for tensioning the transmission belt (18) is provided on the mounting frame (1).

8. A treadmill frame according to claim 7, characterized in that, The tensioning mechanism includes a first support frame (19) mounted on the mounting frame (1), a threaded rod (20) threadedly connected to the first support frame (19), a second support frame (4) fixedly mounted at the bottom of the threaded rod (20) and located within the first support frame (19), and a tensioning wheel (21) rotatably mounted on the second support frame (4) and adapted to the transmission belt (18).