CN216959455U

CN216959455U - Direct-drive treadmill electric roller

Info

Publication number: CN216959455U
Application number: CN202220684075.6U
Authority: CN
Inventors: 黄康军; 黄健斌
Original assignee: Zhongshan Rotontek Machinery Co ltd
Current assignee: Zhongshan Rotontek Machinery Co ltd
Priority date: 2022-03-26
Filing date: 2022-03-26
Publication date: 2022-07-12
Anticipated expiration: 2032-03-26

Abstract

A direct-drive electric roller of a treadmill relates to the technical field of treadmills. It includes: the device comprises a rotating shaft, a first outer rotor motor, a second outer rotor motor and an intermediate roller; the outer rotor motor includes: the winding inner stator, the permanent magnet outer rotor and the transition end cover are arranged; the first outer rotor motor and the second outer rotor motor output rotating speed and torque through the permanent magnet outer rotor and the middle roller; and a position sensor is arranged on the first outer rotor motor or the second outer rotor motor and is used as a position signal of the first outer rotor motor and the second outer rotor. By adopting the technical scheme, the synchronous motor has the advantages of no need of belt speed reduction transmission, small size, high transmission efficiency and capability of ensuring the synchronism of the first outer rotor motor and the second outer rotor motor.

Description

Direct-drive treadmill electric roller

Technical Field

The utility model relates to the technical field of treadmills, in particular to a direct-drive type electric roller of a treadmill.

Background

The electric running machine is a high-grade apparatus for gymnasiums and families, and the electric running machine drives a running belt through a motor to enable a person to run or walk passively at different speeds. The running and walking are passively formed, so that the running and walking on the electric treadmill is almost the same as the ordinary running or walking on the ground in terms of action appearance, but the stepping and stretching action is omitted in comparison with the ordinary running and walking in terms of human body exertion. This makes each person walking on the electric treadmill feel very comfortable, and the person can run about 1/3 more distance than normal running, and the energy consumption is more than normal walking and running. In addition, because the electronic auxiliary equipment on the electric treadmill has a plurality of functions, different running environments such as flat running, uphill running, hill running, variable speed running and the like can be experienced, and the user can select the running environment according to the exercise purpose.

In the drive of the existing running machine, the drive mode adopted is that the motor drives the running platform of the running machine through one-level or two-level belt speed reduction transmission, and the belt transmission can loosen after being used for a long time, thereby influencing the transmission efficiency or causing the phenomenon of skidding. And the distance space between the motor and the running driving roller which needs to be connected by belt transmission occupies the volume of the running machine.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects and shortcomings of the prior art, the utility model provides the electric roller of the direct-drive running machine, which has the advantages of no need of belt speed reduction transmission, small volume and high transmission efficiency.

In order to achieve the purpose, the utility model adopts the technical scheme that: a direct drive treadmill motorized roller, comprising: the rotating shaft is used for being installed on the treadmill frame; the first outer rotor motor is sleeved on the rotating shaft and is positioned at one end of the rotating shaft; the second outer rotor motor is sleeved on the rotating shaft and is positioned at the other end of the rotating shaft; the middle roller is sleeved on the rotating shaft, one end of the middle roller is connected with the first outer rotor motor, and the other end of the middle roller is connected with the second outer rotor motor;

the first outer rotor motor and the second outer rotor motor each include: the winding inner stator is fixedly sleeved on the rotating shaft; the permanent magnet outer rotor is movably sleeved on the winding inner stator; the transition end cover is sleeved on the rotating shaft, one end of the transition end cover is assembled with the permanent magnet outer rotor, and the other end of the transition end cover is assembled with the middle roller;

the outer diameters of the permanent magnet outer rotor and the middle roller are the same, and the first outer rotor motor and the second outer rotor motor output rotating speed and torque through the permanent magnet outer rotor and the middle roller.

The utility model further provides that one sides of the first outer rotor motor and the second outer rotor motor, which are far away from the middle roller, are respectively provided with: the outer end cover is assembled on the end of the permanent magnet outer rotor; and the rotating shaft is sleeved with a second bearing, and the outer end cover is connected and supported on the rotating shaft through the second bearing.

The utility model is further provided with a plurality of heat dissipation holes which are formed in the periphery of both the outer end cover and the transition end cover.

The utility model further provides that a first fastener is arranged on the inner side wall of the winding inner stator, and a second fastener matched with the first fastener is arranged on the rotating shaft; the first fastener and the second fastener are matched to couple the winding inner stator to the rotating shaft; the first fastener is a limiting notch formed in the inner side wall of the winding inner stator, and the second fastener is a limiting convex strip arranged on the outer side wall of the rotating shaft and matched with the limiting notch.

The present invention further provides that a position sensor is disposed on the first outer rotor motor or the second outer rotor motor, and the position sensor is used as a position signal of the first outer rotor motor and the second outer rotor motor, so that the first outer rotor motor and the second outer rotor motor are synchronized.

The utility model is further provided with a first groove is arranged on the inner side wall of one end of the permanent magnet outer rotor, which is close to the transition end cover; and a first convex key matched with the first groove is arranged on the outer side wall of one end, close to the permanent magnet outer rotor, of the transition end cover.

The utility model is further provided with a second convex key arranged on the inner side wall of one end of the intermediate roller close to the transition end cover, and a second groove matched with the second convex key is arranged on the outer side wall of one end of the transition end cover close to the intermediate roller.

After the technical scheme is adopted, the utility model has the beneficial effects that:

1. in the utility model, two ends of the middle roller are respectively connected with the first outer rotor motor and the second outer rotor motor, the two motors are directly driven without belt speed reduction transmission, and the transmission efficiency is higher; and because the distance space of the belt transmission connection between the motor and the middle roller is not needed, the whole volume is smaller.

2. In the utility model, the first outer rotor motor and the second outer rotor motor are both provided with outer end covers, which play a role in protecting internal parts of the electric roller of the direct-drive treadmill.

3. In the utility model, the rotating shaft is sleeved with the first bearing and the second bearing, the transition end cover is connected and supported on the rotating shaft through the first bearing, and the outer end cover is connected and supported on the rotating shaft through the second bearing, so that the mechanical load friction coefficient of the equipment in the transmission process is reduced, and the service life of the equipment is prolonged.

4. In the utility model, the outer end cover and the transition end cover are both provided with a plurality of heat dissipation holes around the circumference, thereby improving the heat dissipation effect of the whole equipment and further prolonging the service life of the equipment.

5. In the utility model, the first fastener is a limiting notch, the second fastener is a limiting convex strip, and the first fastener and the second fastener are matched with each other, so that after the winding inner stator is sleeved on the rotating shaft, the limiting notch is clamped on the limiting convex strip, and the winding inner stator is positioned.

6. In the utility model, the first outer rotor motor or the second outer rotor motor is provided with the position sensor, and the position sensor is used as a position signal of the first outer rotor motor and the second outer rotor motor, so that the first outer rotor motor and the second outer rotor motor are synchronous.

7. According to the utility model, a first groove is formed in the inner side wall of one end, close to the transition end cover, of the permanent magnet outer rotor, a first convex key is arranged on the outer side wall of one end, close to the permanent magnet outer rotor, of the transition end cover, a second convex key is arranged on the inner side wall of one end, close to the transition end cover, of the intermediate roller, a second groove is formed in the outer side wall of one end, close to the intermediate roller, of the transition end cover, and the transition end cover, the permanent magnet outer rotor and the intermediate roller can be connected reliably through the matching of the first groove and the first convex key and the matching of the second convex key and the second groove, the rotating speed and the torque output by the permanent magnet outer rotor are transmitted to the intermediate connecting cylinder, and the first outer rotor motor and the second outer rotor motor are connected.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is an exploded view of the structure of the present invention;

fig. 4 is an exploded view of the structure of the first outer rotor motor;

FIG. 5 is a schematic structural view of a winding inner stator and a rotating shaft;

FIG. 6 is a schematic structural view of a permanent magnet outer rotor and a transition end cover;

fig. 7 is a schematic view of the structure of the transition end caps and the intermediate drum.

Description of reference numerals: 100. a rotating shaft; 110. limiting convex strips; 200. a first outer rotor motor; 210. winding an inner stator; 220. a permanent magnet outer rotor; 230. a transition end cap; 231. a semicircular convex key; 240. an outer end cover; 250. a first bearing; 260. a second bearing; 300. a second outer rotor motor; 400. a middle drum; 410. a square key; 500. a position sensor; a. heat dissipation holes; b. a limiting notch; c. a semicircular groove; d. a square groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment as necessary without making a contribution thereto after reading the present specification, but all are protected by patent laws within the scope of the claims of the present invention.

The embodiment relates to a direct-drive treadmill motorized roller, as shown in fig. 1-3, comprising: a rotation shaft 100, a first outer rotor motor 200, a second outer rotor motor 300, and an intermediate drum 400.

Wherein, the rotating shaft 100 is used for the rotating shaft 100 installed on the treadmill frame. The first external rotor motor 200 is sleeved on the rotating shaft 100 and located at one end of the rotating shaft 100. The second outer rotor motor 300 is sleeved on the rotating shaft 100 and located at the other end of the rotating shaft 100. The middle roller 400 is sleeved on the rotating shaft 100, and one end of the middle roller is connected to the first outer rotor motor 200, and the other end of the middle roller is connected to the second outer rotor motor 300.

In the present embodiment, first outer rotor motor 200 and second outer rotor motor 300 have the same structure, and as shown in fig. 4, each includes: a winding inner stator 210 fixedly sleeved on the rotation shaft 100; a permanent magnet outer rotor 220 movably sleeved on the winding inner stator 210; and a transition end cover 230 sleeved on the rotating shaft 100, one end of which is assembled with the permanent magnetic outer rotor 220 and the other end of which is assembled with the middle roller 400. The outer diameters of the permanent magnet outer rotor 220 and the middle drum 400 are the same, and the first outer rotor motor 200 and the second outer rotor motor 300 output the rotating speed and the torque through the permanent magnet outer rotor 220 and the middle drum 400.

It can also be understood that the transition end cover 230 is coupled to the intermediate drum to couple the first external rotor motor 200, the second external rotor motor 300, and the intermediate drum 400 together to form a direct-drive motorized drum.

The two ends of the middle roller 400 are respectively connected with the first outer rotor motor 200 and the second outer rotor motor 300, the two motors are directly driven without belt speed reduction transmission, and the transmission efficiency is higher; and the whole volume is smaller because the distance space between the motor and the middle roller 400 is not needed for the transmission connection of a belt.

As a preferred solution, as shown in fig. 4, a first bearing 250 is sleeved on the rotating shaft 100, and the transition end cover 230 is coupled and supported on the rotating shaft 100 through the first bearing 250. The structural design reduces the mechanical load friction coefficient of the equipment in the transmission process, and prolongs the service life of the equipment.

As a preferable scheme, as shown in fig. 1 to 4, the first outer rotor motor 200 and the second outer rotor motor 300 are provided with: an outer end cap 240 fitted over the end of the permanent magnet outer rotor 220. The outer end cover 240 is arranged to protect internal components of the electric roller of the direct-drive treadmill.

Further, as shown in fig. 4, a second bearing 260 is sleeved on the rotating shaft 100, and the outer end cover 240 is supported on the rotating shaft 100 by the second bearing 260. The structural design reduces the mechanical load friction coefficient of the equipment in the transmission process, and prolongs the service life of the equipment.

As a preferable scheme, as shown in fig. 2 and fig. 3, the outer end cover 240 and the transition end cover 230 are both provided with a plurality of heat dissipation holes a around the circumference. Specifically, in the present embodiment, the outer end cap 240 and the transition end cap 230 are both provided with six heat dissipation holes a around the circumference, and the positions and the shapes and the sizes thereof are in one-to-one correspondence. Through setting up a plurality of louvres a, improved the radiating effect of whole equipment, further improved the life of equipment.

As a preferable scheme, a first fastening member is arranged on the inner side wall of the winding inner stator 210, and a second fastening member adapted to the first fastening member is arranged on the rotating shaft 100; the first and second fastening members cooperate to couple the winding inner stator 210 to the rotation shaft 100. Specifically, in the present embodiment, as shown in fig. 5, the first fastening member is a limiting notch b formed on the inner sidewall of the winding inner stator 210, and the second fastening member is a limiting protrusion 110 disposed on the outer sidewall of the rotating shaft 100 and adapted to the limiting notch b. Spacing breach b and spacing sand grip 110 are mutually supported for back, spacing breach b joint is at spacing sand grip 110 after wire winding inner stator 210 cover is gone up in pivot 100, thereby realizes the location to wire winding inner stator 210. In other embodiments, the first fastening member and the second fastening member may have other structures, and may be used to position the winding inner stator 210, which is not limited herein.

As a preferable mode, as shown in fig. 1, the first outer rotor motor 200 or the second outer rotor motor 300 is provided with a position sensor 500. In the present embodiment, the position sensor 500 is provided on the first outer rotor motor 200. Position sensor 500 serves as a position signal for first outer rotor motor 200 and second outer rotor motor to synchronize first outer rotor motor 200 and second outer rotor motor 300. In the present embodiment, the position sensor 500 is specifically a hall sensor.

As a preferable scheme, a first groove is formed on the inner side wall of one end of the permanent magnet outer rotor 220 close to the transition end cover 230; the outer side wall of the end of the transition end cover 230 close to the permanent magnet outer rotor 220 is provided with a first convex key matched with the first groove. A second convex key is arranged on the inner side wall of one end of the middle roller 400 close to the transition end cover 230, and a second groove matched with the second convex key is arranged on the outer side wall of one end of the transition end cover 230 close to the middle roller 400. Through the matching of the first groove and the first convex key and the matching of the second convex key and the second groove, the transition end cover 230 can be reliably coupled with the permanent magnet outer rotor 220 and the intermediate roller 400, the rotating speed and the torque output by the permanent magnet outer rotor 220 are transmitted to the intermediate cylinder, and the first outer rotor motor 200 is coupled with the second outer rotor motor 300.

Specifically, in the present embodiment, as shown in fig. 6, the first grooves are semicircular grooves c and the first keys are semicircular keys 231, and more specifically, six semicircular grooves c and semicircular keys 231 are provided. In other embodiments, the first groove and the first key may have other structures.

Specifically, in the present embodiment, as shown in fig. 7, the second convex key is a square key 410 protruding inward, and the second concave groove is a square groove d, and more specifically, six square keys 410 and six square grooves d are provided. In other embodiments, the second key and the second groove may have other structures.

The working principle of the utility model is roughly as follows: the two ends of the middle roller 400 are respectively connected with the first outer rotor motor 200 and the second outer rotor motor 300, the two motors are directly driven without belt speed reduction transmission, and the transmission efficiency is higher; and the whole volume is smaller because the distance space between the motor and the middle roller 400 is not needed for the transmission connection of a belt.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered by the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A direct drive treadmill motorized roller, comprising: a rotating shaft (100) for being installed on the treadmill frame; the first outer rotor motor (200) is sleeved on the rotating shaft (100) and is positioned at one end of the rotating shaft (100); the second outer rotor motor (300) is sleeved on the rotating shaft (100) and is positioned at the other end of the rotating shaft (100); the middle roller (400) is sleeved on the rotating shaft (100), one end of the middle roller is connected with the first outer rotor motor (200), and the other end of the middle roller is connected with the second outer rotor motor (300);

the first outer rotor motor (200) and the second outer rotor motor (300) each include: a winding inner stator (210) fixedly sleeved on the rotating shaft (100); the permanent magnet outer rotor (220) is movably sleeved on the winding inner stator (210); the transition end cover (230) is sleeved on the rotating shaft (100), one end of the transition end cover is assembled with the permanent magnet outer rotor (220), and the other end of the transition end cover is assembled with the middle roller (400);

the permanent magnet outer rotor (220) and the middle roller (400) have the same outer diameter, and the first outer rotor motor (200) and the second outer rotor motor (300) output rotating speed and torque through the permanent magnet outer rotor (220) and the middle roller (400).

2. The direct drive treadmill motor roller of claim 1, wherein a side of the first outer rotor motor (200) and the second outer rotor motor (300) distal from the intermediate roller (400) are each provided with: an outer end cap (240) fitted over the end of the permanent magnet outer rotor (220); a second bearing (260) is sleeved on the rotating shaft (100), and the outer end cover (240) is supported on the rotating shaft (100) through the second bearing (260) in a coupling mode.

3. The direct-drive treadmill motor roller as recited in claim 2, wherein the outer end cap (240) and the transition end cap (230) are formed with a plurality of heat dissipation holes (a) around the circumference.

4. The direct-drive treadmill motor roller as recited in claim 1, wherein a first fastening member is disposed on an inner sidewall of the winding inner stator (210), and a second fastening member adapted to the first fastening member is disposed on the rotation shaft (100); the first fastener and the second fastener are matched to couple the winding inner stator (210) to the rotating shaft (100); the first fastener is a limiting notch (b) formed in the inner side wall of the winding inner stator (210), and the second fastener is a limiting protruding strip (110) arranged on the outer side wall of the rotating shaft (100) and matched with the limiting notch (b).

5. The direct drive treadmill motor roller of claim 1, wherein a position sensor (500) is disposed on the first outer rotor motor (200) or the second outer rotor motor (300), the position sensor (500) acting as a position signal for the first outer rotor motor (200) and the second outer rotor motor to synchronize the first outer rotor motor (200) and the second outer rotor motor (300).

6. The direct-drive treadmill motor roller as recited in claim 1, wherein a first groove is disposed on an inner sidewall of one end of the permanent magnet outer rotor (220) near the transition end cap (230); and a first convex key matched with the first groove is arranged on the outer side wall of one end, close to the permanent magnet outer rotor (220), of the transition end cover (230).

7. The direct-drive treadmill motor roller as recited in claim 1, wherein a second convex key is disposed on an inner side wall of the end of the intermediate roller (400) near the transition end cap (230), and a second groove adapted to the second convex key is disposed on an outer side wall of the end of the transition end cap (230) near the intermediate roller (400).