Ultra-thin motor

Abstract

The motor device comprises a stator, the stator comprises a winding coil and a rotor, the rotor comprises a shaft, a first shell end cover of the motor, a second shell end cover of the motor, a heat dissipation air channel or air hole and a rope winding disc, and a baffle plate on one side, close to the motor, of the rope winding disc is provided with heat dissipation blades to provide heat dissipation wind power for forward rotation and reverse rotation of the motor. According to the motor device, the motor can be made thinner by adopting an axial motor structure, meanwhile, the heat dissipation capability of the motor is improved by an innovative heat dissipation structure, the scheme of the utility model is very suitable for the light and thin design of wall-mounted intelligent electronic counterweight fitness equipment, and the product performance, appearance and customer application experience of the fitness equipment are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the tension pump motor technology used in body -building equipment, especially the ultra -thin motor of wall -hanging type intelligent electronic counterweight body -building equipment. BACKGROUND

[0002] With the pursuit of life quality, more and more people are busy in heavy work, usually exercise to enhance physical fitness or fitness etc. In the prior art, when the user uses the body -building equipment with counterweight block to body -building, usually according to experience, demand or user's force size self -configuration counterweight block quantity, but the weight and volume of counterweight block are relatively large, inconvenient to carry, and the weight of counterweight block is fixed, inconvenient for user to finely adjust the resistance received when exercising, and the user experience is poor. With the rapid rise of the convenience and home application demand of body -building, intelligent electronic counterweight body -building equipment is more and more popular, especially multifunctional wall -hanging type intelligent electronic counterweight body -building equipment becomes the first choice of body -building enthusiasts. Some intelligent electronic counterweight body -building equipment often provides the resistance required for exercise for body -building people through motor device, specifically, the motor device includes motor, rope collecting disc, the motor includes stator shaft structure, rotor structure and its winding coil, stator structure, disc -shaped motor first housing end cover, second housing end cover. The rope collecting disc is used to wind the tension rope, when using, the body -building person directly or indirectly pulls the tension rope, so as to obtain the resistance provided by the motor. The existing body -building equipment on the market adopts traditional radial magnetic flux structure motor, and the motor technology is mature, and the cost is low, but in order to provide sufficient torque, the thickness of the motor is relatively thick, and cannot be further reduced, which limits the further light and thin design of household wall -hanging type body -building equipment, so it is necessary to improve and optimize the existing motor. At the same time, the ultra -thin design of the motor poses a greater challenge to the heat dissipation of the motor, and the traditional structure motor cannot meet the heat dissipation demand of the ultra -thin structure design.

[0003] In addition, the existing body -building equipment generally has the problem of unstable installation of the driving motor during assembly, and the instability of the installation will be more prominent after the light and thin design of the motor, so it is necessary to further improve and optimize the structure. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the technical defects that the thickness of the existing motor is large, is not conducive to the development of wall -hanging type body -building equipment to light and thin, the heat dissipation is difficult, and the installation is unstable, and provides a kind of axial flux motor scheme with high reliability, low noise, long service life and household wall -hanging ultra -thin body -building equipment, to meet the application demand of lighter and thinner wall -hanging type body -building equipment.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] The utility model provides an ultra -thin motor, is applicable to fitness equipment tension pump motor, including stator, winding coil, rotor and reel, the motor adopts axial flux structure, and is assembled from first housing end cover, rotor, stator, second housing end cover and reel in proper order, the rotor is flat structure, adopts the rotor iron core of sheet laminated structure, the winding coil is flat structure, adopts flat copper wire or PCB plane winding.

[0007] Preferably, the reel includes two baffles, one of which has a rope fixing device on the inner wall, a rope and a heat dissipation fin.

[0008] Preferably, the reel has more than three heat dissipation fins, which are distributed in the same direction and / or opposite directions along the rotation direction.

[0009] Preferably, the first housing end cover is provided with air holes or raised heat dissipation fins, and the second housing end cover is provided with air holes or raised heat dissipation fins.

[0010] Preferably, the air holes or fins of the first housing end cover are arc-shaped, and there are more than two of them, which are distributed in the same direction and / or opposite directions along the rotation direction; the air holes or fins of the second housing end cover are arc-shaped, and there are more than two of them, which are distributed in the same direction and / or opposite directions along the rotation direction.

[0011] Preferably, the stator and rotor structure of the axial motor is single stator single rotor, double stator single rotor, double stator double rotor or multi-stator multi-rotor.

[0012] Preferably, the rotor has more than four permanent magnets, which are arranged in a ring, fan or Halbach array structure.

[0013] Preferably, the motor shaft is provided with another fixed bearing on the basis of the original fixed bearing, forming a double fixed bearing support structure.

[0014] Preferably, the rotor adopts a coreless rotor structure.

[0015] Preferably, the air gap between the stator and the rotor is between 0.2mm and 1.2mm.

[0016] The beneficial effects of the ultra-thin motor applied to fitness equipment are as follows:

[0017] 1. The axial structure motor is used, the overall structure of the motor is thinner, the power density is higher, the torque density is larger, the torque is better, the wall-mounted fitness equipment product can be lighter and thinner, the space occupied by the product is smaller when used at home, the product is more beautiful, and the experience of fitness people is greatly improved.

[0018] 2、Ultra-thin motor due to small size, limited heat dissipation area, prone to overheating. The motor device increases the fan and air duct structure design, greatly improve the motor heat dissipation capacity and heat dissipation efficiency.

[0019] 3、The motor device increases the second bearing, improve the stability of the reel work, reduce the motor wear, improve the stability of the product performance. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the first embodiment of the utility model thin type motor of the three-dimensional explosion map;

[0021] Figure 2 is the second embodiment of the utility model thin type motor of the three-dimensional explosion map;

[0022] Figure 3 is the third embodiment of the utility model thin type motor of the three-dimensional explosion map.

[0023] In the above figure, the reference signs in the figure are as follows:

[0024] 1. Motor shaft, 2. First housing end cover, 3. Stator, 31. Stator coil, 4. Second housing end cover, 21.22.41.42. Heat dissipation structure, 5. Reel, 51.52. Baffle, 53.54. Heat dissipation blade, 55. Pull rope fixing device, 56. Pull rope, 6. Rotor, 7. Fixed bearing DETAILED DESCRIPTION

[0025] The utility model / invention and its beneficial effects will be described in further detail below in conjunction with specific embodiments and the drawings of the specification, but the specific embodiments of the utility model / invention are not limited to this.

[0026] First embodiment:

[0027] Please refer to the attached Figure 1, the utility model discloses a kind of motor for ultra-thin fitness equipment, using axial flux structure, by first shell end cap 2, stator 3, rotor 6, second shell end cap 4 and reel 5 sequentially assembled;Rotor 6 is flattened structure, using sheet laminated structure's iron core;Stator coil 31 is flattened structure, stator coil 31 uses flat copper wire or PCB planar winding.Specifically, motor includes motor shaft 1, stator 3, rotor 6, and rotor includes permanent magnet 61, reel 5 is arranged on motor shaft structure component, reel 5 includes baffle 51 and 52, pull rope fixing device 55 and pull rope 56 are arranged on one side baffle, motor is provided with first shell end cap 2 and second shell end cap 4, first shell end cap 2 is provided with heat dissipation structure 21 and 22, second shell end cap 4 is provided with heat dissipation structure 41 and 42, heat dissipation structure can be opened air hole, or protruding air plate, air hole and air plate are arc, number is 2 or more, along the same direction and / or opposite direction distribution of rotating direction, to generate greater wind force by concave air hole, protruding air plate in motor working process, form the heat dissipation air duct that can be penetrated between first shell end cap 2 and second shell end cap 4 and directly connected to outside and can flow up and down, to dissipate the heat quantity of motor internal component to motor outside, realize more optimal motor internal forced cooling effect.Motor main magnetic circuit is axial structure, the axial motor includes single stator single rotor, double stator single rotor, double stator double rotor, multiple stator multiple rotor and other structure forms, axial motor structure magnetic circuit length is small, compared with radial flux motor, power density is high, torque density is large, structure is compact.Motor rotor iron core uses sheet laminated mode to make, cut into extremely thin sheet shape to high-performance permanent magnet magnetic material, then laminated together.Such can guarantee the magnetic permeability of iron core, and can significantly reduce the axial thickness of iron core.Compared with traditional iron core, sheet type rotor iron core occupies less axial space, to further reduce the thickness of motor.In addition, the gap between stator and rotor has important influence on the performance and size of motor.One of the design ways of the ultra-thin motor of the utility model is to accurately control the size of the air gap between stator and rotor, to ensure the normal operation of motor, and to minimize the space occupied by air gap.Through using high-precision processing technology and assembly technology, ensure that the air gap between stator and rotor is uniform and size minimization, and the size of air gap is between 0.2mm to 1.2mm.

[0028] Meanwhile, the stator winding structure is optimized: 1. The winding coil 31 adopts a flat shape instead of a traditional circular coil. The flat coil can better fit the shape of the stator and reduce the space occupied by the coil in the axial direction. For example, the winding made of flat copper wire or printed circuit board (PCB) technology can realize a more compact winding coil structure. 2. Distributed winding layout: the distribution of the winding is reasonably designed to make the arrangement of the winding on the stator more compact. Distributed winding can be used to divide the coil into multiple small sections and evenly distribute them on the circumference of the stator, which can reduce the gap between the coils and improve the space utilization.

[0029] Motor rotor design: 1. Use high-performance permanent magnets: choose permanent magnet materials with high magnetic energy product, such as neodymium iron boron, to reduce the amount and volume of permanent magnets. At the same time, reasonable permanent magnet arrangement methods such as ring arrangement, fan arrangement or Halbach array are adopted to make the magnetic field distribution more uniform and improve the efficiency and performance of the motor. 2. Optimize the rotor structure and adopt the coreless rotor structure: the coreless rotor structure can eliminate the space occupied by the core and further reduce the thickness of the motor. The coreless rotor is usually composed of permanent magnets and support structure, and its manufacturing process is relatively complex, but it can achieve higher power density and efficiency.

[0030] Therefore, the ultra-thin motor of the utility model can be made thinner by adopting an axial motor structure, and the innovative design of the heat dissipation structure can improve the forced heat dissipation capacity of the motor. The utility model scheme is very suitable for the lightweight design of the wall-mounted intelligent electronic counterweight fitness equipment, and can greatly improve the performance, appearance and customer application experience of the fitness equipment product.

[0031] Second embodiment:

[0032] Please refer to the attached drawings Figure 2The utility model discloses a three -dimensional explosion map of the second embodiment's ultra -thin motor, a kind of axial flux structure motor for ultra -thin fitness equipment, different from the first embodiment, in addition to the heat dissipation vane 53,54 in the rope collecting disc.Specifically, motor includes motor shaft 1, stator 3, stator coil 31, rotor 6, and rotor 6 includes permanent magnet 61, and motor shaft structure assembly is equipped with rope collecting disc 5, and the both sides of rope collecting disc have baffle 51 and 52, and the baffle on one side is equipped with pull rope fixing device 55 and pull rope 56, and motor is provided with first housing end cover 2 and second housing end cover 4, and first housing end cover 2 is equipped with heat dissipation structure 21 and 22, and second housing end cover 4 is equipped with heat dissipation structure 41 and 42, and heat dissipation structure can be the air hole of opening, or the wind board of protruding, air hole and wind board are arc, and the number is more than 2, and it is distributed along the same direction and / or opposite direction of rotation direction, to generate larger wind power in the working process of motor by concave air hole, protruding wind board.Rotor structure assembly is equipped with rope collecting disc 5, and the both sides of rope collecting disc have baffle 51 and 52 respectively, and the baffle on one side is equipped with pull rope fixing device 55 and pull rope 56, and the baffle close to motor side is equipped with one or more positive blade-shaped heat dissipation fan vane 54, and it can also be equipped with one or more reverse blade-shaped heat dissipation fan vane 53 simultaneously, and the heat dissipation fan vane 53,54 generates larger wind power when motor rotates forward and reversely, and air flow passes through the heat dissipation air duct or air hole on housing end cover to force heat dissipation to the inside of motor, improve heat dissipation efficiency.

[0033] Third embodiment:

[0034] Please refer to the attached Figure 3 , Figure 3The utility model discloses a three -dimensional explosion map of the ultra -thin motor of third embodiment of the utility model, a axial magnetic flux structure motor for ultra -thin body building equipment, with the difference of second embodiment, another fixed bearing 7 is added to the motor shaft 1 outside the protruding part of the rope collecting disc 5. Specifically, the motor includes motor shaft 1, stator 3, stator coil 31, rotor 6, the rotor 6 includes permanent magnet 61, the motor shaft structure assembly is equipped with rope collecting disc 5, and the both sides of rope collecting disc have baffle 51 and 52, and the baffle on one side is equipped with pull rope fixing device 55 and pull rope 56, and the motor is equipped with first housing end cover 2 and second housing end cover 4, and first housing end cover 2 is equipped with heat dissipation structure 21 and 22, and second housing end cover 4 is equipped with heat dissipation structure 41 and 42, and the heat dissipation structure can be the air hole of opening or the wind board of protruding, and the air hole and wind board are arc, and the number is more than 2, and the same direction and / or opposite direction distribution along the rotation direction, to produce greater wind force through the concave air hole, the convex wind board in the motor working process. Rotor structure assembly is equipped with rope collecting disc 5, and the both sides of rope collecting disc have baffle 51 and 52, and the baffle on one side is equipped with pull rope fixing device 55 and pull rope 56, and the baffle close to the motor side is equipped with one or more positive blade -like heat dissipation fan blades 54 and reverse blade -like heat dissipation fan blades 53, and the heat dissipation fan blades 53, 54 produce greater wind force in the motor positive rotation and reverse rotation, and the motor interior is actively cooled through the heat dissipation air duct on the housing end cover, and the rotor structure is equipped with second fixed bearing device 7. Because the overall thickness of the axial structure's ultra -thin motor is less, and the second bearing is specially increased as the support, the motor device stability and the smooth operation of the rope collecting device are further improved in the process of rope collecting, and the wear of the rotor bearing in the motor interior is reduced, and the product reliability and user experience are improved.

[0035] The above embodiments are only used to help understand the method and core idea of the utility model, and for ordinary skilled persons in the technical field, other equivalent application schemes that can be naturally thought of through the above description and examples without departing from the principle of the utility model, and several improvements and modifications of the utility model, all fall within the protection scope of the claims of the utility model.

Claims

1. An ultra-thin motor, suitable for fitness equipment tension pump motor, comprising a stator, a winding coil, a rotor and a rope winding disc, characterized in that: The motor adopts axial magnetic flux structure, and is assembled by a first shell end cover, a rotor, a stator, a second shell end cover and a rope winding disc in sequence, The rotor is a flat structure, and adopts a laminated rotor core; The winding coil is a flat structure, and adopts flat copper wire or PCB flat winding.

2. The ultra-thin motor of claim 1, wherein: The rope winding disc includes two baffles, and one of the baffles is provided with a fixed device, a rope and a heat dissipation fin on an inner wall.

3. The ultra-thin motor of claim 1, wherein: The heat dissipation fin of the rope winding disc is more than three, and is distributed in the same direction and / or opposite direction along the rotation direction.

4. The ultra-thin motor of claim 1, wherein: The first shell end cover is provided with air holes or convex heat dissipation fins, and the second shell end cover is provided with air holes or convex heat dissipation fins.

5. The ultra-thin motor of claim 4, wherein: The air holes or fins of the first shell end cover are arc-shaped, and the number is more than two, and are distributed in the same direction and / or opposite direction along the rotation direction; the air holes or fins of the second shell end cover are arc-shaped, and the number is more than two, and are distributed in the same direction and / or opposite direction along the rotation direction.

6. The ultra-thin motor of claim 1, wherein: The stator and the rotor are single stator single rotor, double stator single rotor, double stator double rotor or multiple stator multiple rotor.

7. The ultra-thin motor of claim 1, wherein: The number of permanent magnets on the rotor is more than four, and the arrangement structure is annular, sector or Halbach array structure.

8. The ultra-thin motor of claim 1, wherein: The rotor is provided with another fixed bearing on the basis of the original fixed bearing, and forms a double fixed bearing support structure.

9. The ultra-thin motor of claim 1, wherein: The rotor adopts a coreless rotor structure.

10. The ultra-thin motor of claim 1, wherein: The air gap size between the stator and the rotor is between 0.2 mm and 1.2 mm.

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