Differential power mechanism and fitness equipment

Abstract

The utility model discloses a differential power mechanism and fitness equipment, the differential power mechanism comprises an external rotor motor and two groups of differential mechanisms, the external rotor motor comprises a stator shaft and an external rotor, and the two groups of differential mechanisms are respectively located at two sides of the external rotor motor. The differential mechanism comprises a connecting disc, a reel, a first bevel gear, a second bevel gear and a third bevel gear, the connecting disc, the reel and the third bevel gear are rotationally connected with the stator shaft, the connecting disc and the outer rotor rotate together, the connecting disc is provided with a gear frame, and the first bevel gear and the second bevel gear are rotationally connected to the gear frame; according to the utility model, the single external rotor motor is adopted to provide rotation resistance for the two reels, the manufacturing cost is saved, the rotation speeds of the two reels do not influence each other, the damping force provided by the two sides can be kept unchanged, and the damping force provided by the two sides can be kept unchanged. And a good strength training effect is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of fitness equipment, in particular to a differential power mechanism and fitness equipment. Background Art

[0002] At present, in the technical field of fitness equipment, a strength trainer is usually used for single-arm or double-arm strength training. Specifically, the strength trainer includes a power mechanism, a winding wheel and a rope. The rope is wound on the winding wheel. When the rope is pulled, the rope can drive the winding wheel to rotate. The winding wheel is connected to the output end of the power mechanism. The power mechanism can provide rotational resistance to the winding wheel, thereby hindering the rotation of the winding wheel, so that there will be a damping feeling when the rope is pulled, and strength training can be achieved. At present, the power mechanism is usually a motor. By adjusting the speed of the motor, the rotational resistance of the motor to the winding wheel can be changed, so that multiple strength training gears can be divided, which can improve the user experience. However, in order to achieve double-arm strength training, two motors are required to provide rotational resistance to the two winding wheels respectively, resulting in high manufacturing costs. Utility Model Content

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a differential power mechanism, which uses a single outer rotor motor to provide rotational resistance to two winding wheels, saving manufacturing costs, and the rotation speeds of the two winding wheels do not affect each other, and the damping forces provided by both sides remain unchanged, ensuring a better effect of strength training and improving the user experience.

[0004] The utility model also provides a fitness equipment with the differential power mechanism.

[0005] According to the differential power mechanism of the first aspect of the utility model, the differential power mechanism includes: an outer rotor motor, including a stator shaft and an outer rotor; two sets of differential mechanisms, respectively located on both sides of the outer rotor motor, the differential mechanism includes a connecting plate, a winding wheel, a first bevel gear, a second bevel gear and a third bevel gear, the connecting plate, the winding wheel and the third bevel gear are respectively rotatably connected to the stator shaft, a bearing is provided on the inner side of the connecting plate, the bearing is fixed to the stator shaft, the connecting plate is rotatably connected to the stator shaft through the bearing, the connecting plate is connected to the yoke of the outer rotor, the connecting plate rotates together with the outer rotor, the connecting plate is provided with a gear frame, the first bevel gear and the second bevel gear are rotatably connected to the gear frame, the third bevel gear is meshed with the first bevel gear and the second bevel gear, the axis of the first bevel gear coincides with the axis of the second bevel gear, the axis of the first bevel gear is perpendicular to the axis of the stator shaft, and the winding wheel rotates together with the third bevel gear.

[0006] The differential power mechanism according to the first aspect of the utility model embodiment has at least the following beneficial effects: by adopting an outer rotor motor and setting two sets of differential mechanisms, the outer rotor drives the two winding wheels to rotate through the two sets of differential mechanisms, so as to provide rotational resistance to the two winding wheels. A single outer rotor motor can realize double-arm strength training, which can reduce the number of motors and reduce manufacturing costs. It should be noted that the differential mechanism can realize the differential function, so that the rotation speed of the winding wheel can be different from the rotation speed of the outer rotor. When performing double-arm strength training, the ropes on the two winding wheels are repeatedly pulled at the same time, and the rotation speeds of the two winding wheels do not affect each other, ensuring double-arm strength training. The invention can ensure that the rotational resistance of the two winding wheels remains unchanged, that is, the two winding wheels do not interfere with each other, thereby ensuring a better effect of strength training. The damping force provided on both sides can remain unchanged. When performing single-arm strength training, when only pulling the rope on one of the winding wheels, it will not be affected by the other non-rotating winding wheel. In addition, no matter it is single-arm or double-arm training, the fitness personnel will drive the winding wheels to rotate in the opposite direction when pulling the rope. By setting two sets of differential mechanisms, the first bevel gear and the second bevel gear can buffer the power of the reverse rotation during the reverse rotation of the winding wheels, and will not drive the outer rotor to rotate in the opposite direction, thereby protecting the outer rotor.

[0007] According to some embodiments of the present invention, the connecting disk is connected to the outer rotor via a fastener.

[0008] According to some embodiments of the utility model, a receiving groove is provided on a side of the winding wheel close to the outer rotor motor, the third bevel gear is located in the receiving groove, a portion of the structure of the gear rack extends into the receiving groove, and a portion of the structure of the first bevel gear and the second bevel gear extends into the receiving groove.

[0009] According to some embodiments of the utility model, a peripheral wall of the accommodating groove is provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are arranged along the axial direction of the winding wheel.

[0010] According to some embodiments of the utility model, the gear rack includes an extension structure extending axially along the stator shaft, the extension structure includes a first extension portion and a second extension portion, the first bevel gear or the second bevel gear is located between the first extension portion and the second extension portion, and two extension structures are provided, and the two extension structures are respectively located on both sides of the stator shaft.

[0011] The fitness equipment according to the second aspect of the utility model comprises: the differential power mechanism of the first aspect; a rope; a swing arm mechanism, comprising an articulated seat and a swing arm, the swing arm is articulated with the articulated seat, and the swing arm is connected with the winding wheel through the rope.

[0012] The fitness equipment according to the second embodiment of the utility model comprises the differential power mechanism of the first embodiment and thus has at least the above-mentioned beneficial effects, which will not be described in detail here.

[0013] According to some embodiments of the utility model, the fitness equipment includes a mounting frame, two differential power mechanisms are provided, and the two differential power mechanisms are respectively located at two ends of the mounting frame, and four swing arm mechanisms are provided, and the four swing arm mechanisms are respectively located at four corners of the mounting frame.

[0014] According to some embodiments of the utility model, the fitness equipment includes a steering mechanism, the swing arm mechanism is located above the steering mechanism, the steering mechanism is arranged on one side of the mounting frame, the steering mechanism is used to guide the rope to turn toward the swing arm mechanism, the steering mechanism includes a first pulley and a second pulley, the rope passes through the first pulley and the second pulley, the height of the second pulley is greater than the height of the first pulley, the first pulley and the second pulley are located on the same inclined plane, and the axis of the first pulley and the axis of the second pulley are both perpendicular to the inclined plane.

[0015] According to some embodiments of the present utility model, the rope extends into the swing arm from one end of the swing arm, and passes through the swing arm from the other end of the swing arm.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 It is a schematic diagram of the structure of the differential power mechanism of some embodiments of the utility model;

[0019] Figure 2 An exploded view of a differential power mechanism of some embodiments of the utility model;

[0020] Figure 3 It is a structural schematic diagram of a connection plate of a differential power mechanism of some embodiments of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the winding wheel of the differential power mechanism of some embodiments of the utility model;

[0022] Figure 5 It is a schematic diagram of the structure of fitness equipment in some embodiments of the utility model;

[0023] Figure 6It is a side view of the fitness equipment according to some embodiments of the present invention.

[0024] Reference numerals:

[0025] Differential power mechanism 1000;

[0026] Fitness equipment 2000;

[0027] An outer rotor motor 100, a stator shaft 110, and an outer rotor 120;

[0028] Differential mechanism 200, connecting plate 210, gear frame 211, extension structure 212, first extension portion 213, second extension portion 214, winding wheel 220, receiving groove 221, reinforcing rib 222, first bevel gear 230, second bevel gear 240, third bevel gear 250;

[0029] Rope 300;

[0030] Swing arm mechanism 400, hinge seat 410, swing arm 420;

[0031] Mounting frame 500;

[0032] Steering mechanism 600 , first pulley 610 , second pulley 620 . DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] Reference Figure 1 As shown, a differential power mechanism 1000 provided in an embodiment of the present utility model includes an outer rotor motor 100 and two sets of differential mechanisms 200 .

[0035] Reference Figure 1 As shown, the outer rotor motor 100 includes a stator shaft 110 and an outer rotor 120 . The stator shaft 110 is stationary, and the outer rotor 120 is rotatable around the axial direction of the stator shaft 110 .

[0036] Reference Figure 1 As shown, the two differential mechanisms 200 are respectively located on both sides of the outer rotor motor 100. Figure 1 and Figure 2As shown, the differential mechanism 200 includes a connecting disk 210, a winding wheel 220, a first bevel gear 230, a second bevel gear 240 and a third bevel gear 250. The connecting disk 210, the winding wheel 220 and the third bevel gear 250 are respectively rotatably connected to the stator shaft 110 and can rotate relative to the stator shaft 110. A bearing is provided on the inner side of the connecting disk 210, and the bearing is fixed to the stator shaft 110. The connecting disk 210 is rotatably connected to the stator shaft 110 through the bearing. The connecting disk 210 and the yoke of the outer rotor 120 are connected together by bolts, so that the outer rotor 120 can drive the connecting disk 210 to rotate together. The connecting disk 210 is provided with a gear rack 211, and the first bevel gear 230 and the second bevel gear 240 are rotatably connected to the gear rack 211. The third bevel gear 250 is meshed with the first bevel gear 230 and the second bevel gear 240. The axis of the first bevel gear 230 coincides with the axis of the second bevel gear 240. The first bevel gear 230 is located on one side of the stator shaft 110, and the second bevel gear 240 is located on the other side of the stator shaft 110. The axis of the first bevel gear 230 is perpendicular to the axis of the stator shaft 110. It can also be understood that the first bevel gear 230 and the second bevel gear 240 are planetary gears, and the third bevel gear 250 is a sun gear. While the first bevel gear 230 and the second bevel gear 240 rotate around the third bevel gear 250, the first bevel gear 230 and the second bevel gear 240 can also rotate around their own axes. The winding wheel 220 is connected to the third bevel gear 250, so that the third bevel gear 250 can drive the winding wheel 220 to rotate together.

[0037] The working principle of the differential power mechanism 1000 of this embodiment is as follows: after the outer rotor motor 100 is started, the outer rotor 120 rotates. At this time, the rotation direction of the outer rotor 120 is defined as the forward direction. The outer rotor 120 drives the connecting disk 210 to rotate together. The gear rack 211 of the connecting disk 210 drives the first bevel gear 230 and the second bevel gear 240 to rotate around the third bevel gear 250. At the same time, the first bevel gear 230 and the second bevel gear 240 also rotate around their own axes. Since the third bevel gear 250 meshes with the first bevel gear 230 and the second bevel gear 240, When the first bevel gear 230 and the second bevel gear 240 are combined, the third bevel gear 250 will drive the third bevel gear 250 to rotate, and the third bevel gear 250 will drive the winding wheel 220 to rotate, so that the winding wheel 220 keeps tightening the rope 300. When doing strength training, the fitness person will pull the rope 300, and the rope 300 will drive the winding wheel 220 to rotate, so that the winding wheel 220 rotates in the opposite direction. The power of the outer rotor motor 100 will hinder the reverse rotation of the winding wheel 220, provide rotation resistance to the winding wheel 220, and there will be a damping feeling when the rope 300 is pulled, thereby achieving strength training. It should be noted that the rotational speed of the winding wheel 220 can be different from the rotational speed of the outer rotor 120, and the two do not interfere with each other, the rope 300 does not get stuck, and since two sets of differential mechanisms 200 are provided, even if the two ropes 300 are repeatedly pulled at the same time, after the buffering of the two sets of differential mechanisms 200, the rotational speeds of the two winding wheels 220 do not affect each other, thereby ensuring a better strength training effect, and the damping force provided on both sides can be kept the same. In addition, when performing single-arm strength training, when only the rope 300 on one of the winding wheels 220 is pulled, it will not be affected by the other non-rotating winding wheel 220.

[0038] It should also be noted that, regardless of single-arm or double-arm training, pulling the rope 300 will drive the winding wheel 220 to rotate in the opposite direction. By providing two sets of differential mechanisms 200, during the reverse rotation of the winding wheel 220, the first bevel gear 230 and the second bevel gear 240 can buffer the power of the reverse rotation, and will not drive the outer rotor 120 to rotate in the opposite direction, thereby protecting the outer rotor 120.

[0039] Reference Figure 4 As shown, according to some embodiments of the present invention, a receiving groove 221 is provided on one side of the winding wheel 220 close to the outer rotor motor 100, referring to Figure 1 and Figure 2 As shown, the third bevel gear 250 is located in the receiving groove 221, and part of the structure of the gear frame 211 extends into the receiving groove 221. Part of the structure of the first bevel gear 230 and the second bevel gear 240 also extends into the receiving groove 221, which can reduce the axial length of the differential power mechanism 1000 and reduce the occupied space.

[0040] Reference Figure 4As shown, according to some embodiments of the present invention, a plurality of reinforcing ribs 222 are provided on the peripheral wall of the accommodating groove 221 , and the plurality of reinforcing ribs 222 are arranged along the axial direction of the winding wheel 220 , and the reinforcing ribs 222 can strengthen the structural strength of the winding wheel 220 .

[0041] Reference Figure 3 As shown, according to some embodiments of the present invention, the gear frame 211 includes an extension structure 212 extending along the axial direction of the stator shaft 110, and the extension structure 212 includes a first extension portion 213 and a second extension portion 214. The first bevel gear 230 or the second bevel gear 240 is disposed between the first extension portion 213 and the second extension portion 214 through a connecting shaft. The first extension portion 213 and the second extension portion 214 can strengthen the structural strength of the gear frame 211, and ensure that the differential mechanism 200 can operate normally for a long time. Further, there are two extension structures 212, and the two extension structures 212 are respectively located on both sides of the stator shaft 110, and the first bevel gear 230 and the second bevel gear 240 are respectively connected to the two extension structures 212.

[0042] Reference Figure 5 As shown, the fitness equipment 2000 provided by the embodiment of the utility model includes the differential power mechanism 1000, the rope 300 and the swing arm mechanism 400 of the above embodiment. The swing arm mechanism 400 includes an articulated seat 410 and a swing arm 420. The swing arm 420 is arranged upward, and the lower end of the swing arm 420 is hinged to the articulated seat 410. The swing arm 420 is connected to the winding wheel 220 through the rope 300. When in use, the swing arm 420 can be swung to achieve strength training. When the swing arm 420 is swung, the swing arm 420 will pull the rope 300. The single differential power mechanism 1000 can provide damping force to the two swing arm mechanisms 400.

[0043] Reference Figure 5 As shown, according to some embodiments of the present utility model, the fitness equipment 2000 includes a mounting frame 500, two differential power mechanisms 1000 are provided, and the two differential power mechanisms 1000 are respectively located at both ends of the mounting frame 500 along the length direction, and the stator shaft 110 is fixedly connected to the mounting frame 500, and the differential power mechanism 1000 is supported by the stator shaft 110. There are four swing arm mechanisms 400, and the four swing arm mechanisms 400 are respectively arranged at the four corners of the mounting frame 500, and the two differential power mechanisms 1000 can provide damping force to the four swing arm mechanisms 400. The four swing arm mechanisms 400 can be used for two people to perform double-arm strength training at the same time, or for four people to perform single-arm strength training at the same time, which can improve the user experience.

[0044] Reference Figure 6As shown, according to some embodiments of the present invention, the fitness equipment 2000 includes a steering mechanism 600, the swing arm mechanism 400 is located above the steering mechanism 600, and the steering mechanism 600 is provided at one end of the mounting frame 500 along the length direction, and the steering mechanism 600 is used to guide the rope 300 to turn toward the swing arm mechanism 400. For example, the two ends of the mounting frame 500 along the length direction are respectively a first end and a second end, and the steering mechanism 600 located at the first end is used to make a 90-degree turn on the rope 300 led out from the differential power mechanism 1000 located at the second end, so that the rope 300 is turned to the swing arm mechanism 400 located at the first end, so as to facilitate the connection between the rope 300 and the swing arm mechanism 400. Specifically, the steering mechanism 600 includes a first pulley 610 and a second pulley 620, and the rope 300 is wound around the first pulley 610 and the second pulley 620. The height of the second pulley 620 is greater than the height of the first pulley 610. The first pulley 610 and the second pulley 620 are located on the same inclined plane, and the axis of the first pulley 610 and the axis of the second pulley 620 are both perpendicular to the inclined plane. In this way, the rope 300 can be guided upward, so that the rope 300 is closer to the swing arm mechanism 400, which facilitates the connection between the rope 300 and the swing arm mechanism 400.

[0045] Reference Figure 5 As shown, according to some embodiments of the present invention, the rope 300 extends from one end of the swing arm 420 into the swing arm 420 and passes through the swing arm 420 from the other end of the swing arm 420. The fitness equipment 2000 includes a gripping handle, and the portion of the rope 300 passing through the swing arm 420 can be connected to the gripping handle. When the gripping handle is pulled, the gripping handle can pull the rope 300. After the gripping handle is released, the rope 300 is tightened by the winding reel, and the gripping handle is pressed against the swing arm 420. In this embodiment, strength training can be completed by swinging the swing arm 420, and strength training can also be completed by pulling the gripping handle. The training methods are relatively diverse, and the user experience can be improved.

[0046] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, inside, outside, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 the present invention.

[0047] In the description of the utility model, if there is a description of first or second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0048] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0049] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings. Finally, it should be explained that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A differential power mechanism, characterized in that: include: An external rotor motor comprises a stator shaft and an external rotor; Two sets of differential mechanisms are respectively located on both sides of the outer rotor motor, and the differential mechanism includes a connecting plate, a winding wheel, a first bevel gear, a second bevel gear and a third bevel gear. The connecting plate, the winding wheel and the third bevel gear are respectively rotatably connected to the stator shaft, and the connecting plate rotates together with the outer rotor. The connecting plate is provided with a gear rack, and the first bevel gear and the second bevel gear are rotatably connected to the gear rack. The third bevel gear is meshed with the first bevel gear and the second bevel gear. The axis of the first bevel gear coincides with the axis of the second bevel gear, and the axis of the first bevel gear is perpendicular to the axis of the stator shaft. The winding wheel rotates together with the third bevel gear.

2. The differential power mechanism according to claim 1, characterized in that: The connecting plate is connected to the outer rotor via a fastener.

3. The differential power mechanism according to claim 1, characterized in that: A receiving groove is provided on one side of the winding wheel close to the outer rotor motor, the third bevel gear is located in the receiving groove, a part of the gear rack extends into the receiving groove, and a part of the first bevel gear and the second bevel gear extend into the receiving groove.

4. The differential power mechanism according to claim 3, characterized in that: The peripheral wall of the accommodating groove is provided with a plurality of reinforcing ribs, and the plurality of reinforcing ribs are arranged along the axial direction of the winding wheel.

5. The differential power mechanism according to claim 1, characterized in that: The gear rack includes an extension structure extending axially along the stator shaft, the extension structure includes a first extension portion and a second extension portion, the first bevel gear or the second bevel gear is located between the first extension portion and the second extension portion, and two extension structures are provided, and the two extension structures are respectively located on both sides of the stator shaft.

6. Fitness equipment, characterized in that include: The differential power mechanism according to any one of claims 1 to 5; rope; The swing arm mechanism comprises an articulated seat and a swing arm, wherein the swing arm is articulated with the articulated seat and the swing arm is connected with the winding wheel through the rope.

7. The fitness equipment according to claim 6, characterized in that: The fitness equipment comprises a mounting frame, two differential power mechanisms are provided, and the two differential power mechanisms are respectively located at two ends of the mounting frame, and four swing arm mechanisms are provided, and the four swing arm mechanisms are respectively arranged at four corners of the mounting frame.

8. The fitness equipment according to claim 7, characterized in that: The fitness equipment includes a steering mechanism, the swing arm mechanism is located above the steering mechanism, the steering mechanism is arranged on one side of the mounting frame, the steering mechanism is used to guide the rope to turn toward the swing arm mechanism, the steering mechanism includes a first pulley and a second pulley, the rope passes through the first pulley and the second pulley, the height of the second pulley is greater than the height of the first pulley, the first pulley and the second pulley are located on the same inclined plane, and the axis of the first pulley and the axis of the second pulley are both perpendicular to the inclined plane.

9. The fitness equipment according to claim 6, characterized in that: The rope extends into the swing arm from one end of the swing arm and passes through the swing arm from the other end of the swing arm.

Images