A motor for a household treadmill and a treadmill

Abstract

The application provides a household treadmill motor and a treadmill, and relates to the technical field of treadmills. The household treadmill motor is applied to a household treadmill. The household treadmill comprises a main frame, a motor and a transmission belt. A driving drum and a driven drum are rotatably arranged on the main frame. The two ends of the transmission belt are sleeved on the driving drum and the driven drum respectively. A supporting shaft is fixedly arranged on the main frame. The driving drum is rotatably sleeved on the supporting shaft. The household treadmill motor comprises a stator and a rotor. The stator is arranged on the supporting shaft, and the rotor is arranged on the inner wall of the driving drum. The stator of the motor is arranged on the supporting shaft, and the rotor is arranged on the inner wall of the driving drum. Therefore, the size and weight of the treadmill are reduced, and the integration of the treadmill is improved. In addition, since there is no transmission mechanism, the maintenance cost of the transmission mechanism is saved.

Description

Technical Field

[0001] This application relates to the field of treadmill technology, specifically to a motor for a home treadmill and a treadmill. Background Technology

[0002] Treadmills are a common type of fitness equipment, primarily used for walking or running exercises. With the increasing popularity of exercise and fitness, treadmills are also gradually entering homes.

[0003] like Figure 1 As shown, the drive unit of a home treadmill includes a motor 10 and a belt drive mechanism 20, which includes a drive pulley, a driven pulley, and a drive belt. Existing home treadmills have at least the following disadvantages: 1. The motor and belt drive mechanism require a certain amount of installation space, resulting in a larger length and width for the treadmill. This leads to the problem of the large size of the existing treadmill, which affects the convenience of transportation and the size requirements of the installation space. 2. Belt drive mechanisms have higher maintenance costs. For example, belts are prone to wear and need to be replaced regularly. When the belt wears down to a certain extent, its surface becomes uneven. If it is not replaced in time, slippage will occur, generating significant noise. Summary of the Invention

[0004] The purpose of this application is to overcome the deficiencies of the prior art and provide a motor and treadmill for home treadmills to solve the problems in the prior art.

[0005] To address the aforementioned issues, the first aspect of this application provides a motor for a home treadmill, applicable to a home treadmill. The home treadmill includes a main frame and a drive belt. An active roller and a driven roller are rotatably mounted on the main frame, and both ends of the drive belt are respectively sleeved on the active roller and the driven roller. A support shaft is fixedly mounted on the main frame, and the active roller is rotatably sleeved on the support shaft. The motor for the home treadmill includes a stator and a rotor. The stator is mounted on the support shaft, and the rotor is mounted on the inner wall of the drive roller.

[0006] In one possible implementation, the stator includes a core that is fixedly mounted on the support shaft; wherein the chip is formed by stacking and riveting optimized silicon steel sheets. The core includes teeth, which are multiple and arranged in a ring array about the support axis; Insulating end plates are provided on both ends of the core on both sides of the axial direction; each insulating end plate includes protruding teeth, and there are multiple protruding teeth distributed in a ring array; each protruding tooth corresponds to a tooth portion, wherein the protruding tooth is attached to the side surface of the corresponding tooth portion; A groove is formed between adjacent teeth; an insulating unit is disposed in the groove, and the insulating unit is in contact with the inner wall of the groove; The portion of the tooth and the insulating unit covering the tooth constitutes the insulating layer of the tooth; wherein, a winding is provided on the insulating layer of the tooth.

[0007] In one possible implementation, the rotor includes a plurality of permanent magnets arranged in a ring array about the support shaft; The permanent magnet is arranged around the stator, and there is a gap between the permanent magnet and the stator.

[0008] In one possible implementation, a mounting cavity is provided at one end of the inner wall of the drive roller; the stator is disposed in the mounting cavity; the permanent magnets are arranged sequentially along the circumference of the mounting cavity, and the permanent magnets are fixed to the inner wall of the mounting cavity; wherein the drive roller is made of a magnetically conductive metal material.

[0009] In one possible implementation, a limiting part is provided on the side of the mounting cavity near the geometric center of the active roller, and the limiting part is used to limit the installation of the permanent magnet.

[0010] In one possible implementation, a connecting shaft is fixedly mounted on the main frame, and the driven roller is rotatably sleeved on the connecting shaft.

[0011] In one possible implementation, both the driving roller and the driven roller are provided with a plurality of mounting seats inside; The mounting base includes a mounting hole for mounting a bearing; The bearing inside the driving roller is sleeved on the support shaft, and the bearing inside the driven roller is sleeved on the connecting shaft.

[0012] In one possible implementation, the mainframe includes a frame, the frame including a first component and a second component, the first component and the second component being located on opposite sides of the mainframe in the width direction.

[0013] In one possible implementation, the main frame further includes a connecting plate, to which both the first component and the second component are fixedly connected.

[0014] A second aspect of this application provides a treadmill, including a motor for a home treadmill as described above.

[0015] The beneficial effects of this application include at least the following: The motor for home treadmills proposed in this application has its stator mounted on the support shaft of the treadmill, and its rotor mounted on the inner wall of the drive roller. This eliminates the need for additional motor housings (including casing, end caps, etc.), motor bearings, motor output shafts, and rotor core yokes, and also removes the fixing devices required for securing the motor in existing treadmills. This reduces the size and weight of the treadmill and improves its integration. Furthermore, by using a direct-drive motor, the transmission mechanism is eliminated, thus saving on maintenance costs associated with the transmission mechanism.

[0016] This motor for home treadmills is suitable for home use and has advantages such as low manufacturing cost and ultra-quiet operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of an existing treadmill is shown; Figure 2 A schematic diagram of a treadmill is shown; Figure 3 A schematic diagram of a mainframe rack is shown; Figure 4 An exploded view of a power system is shown; Figure 5 A schematic diagram of a core is shown; Figure 6 An exploded view of a stator is shown; Figure 7 A schematic diagram of an insulating end plate is shown; Figure 8 An assembly diagram of a core and an insulating unit is shown; Figure 9 A schematic diagram of an insulating unit is shown; Figure 10 A schematic diagram showing the positional relationship between the stator and the rotor is shown; Figure 11 It shows Figure 10 The front view; Figure 12A cross-sectional view of an active roller is shown; Figure 13 It shows Figure 12 Enlarged view of a portion of the image; Figure 14 A schematic diagram of a transmission belt is shown.

[0019] Explanation of key component symbols: 10-Motor, 20-Belt drive mechanism, 100-Main frame, 110-Driving roller, 111-Mounting cavity, 112-Limiting part, 113-Communicating cavity, 120-Driven roller, 130-Support shaft, 140-Connecting shaft, 150-Mounting base, 151-Setting hole, 152-Bearing, 161-First component, 162-Second component, 163-Connecting plate, 164-Supporting foot, 200-Motor, 210-Stator, 211-Core, 2111-Gear, 2112-Groove, 212-Insulating end plate, 2121-Protruding tooth, 213-Insulating unit, 220-Rotor, 221-Permanent magnet, 300-Transmission belt. Detailed Implementation

[0020] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the technical solutions of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the described embodiments are merely some embodiments of this application, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0021] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0022] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0023] In the description of this application, the serial numbers assigned to components, such as "first," "second," etc., are only used to distinguish the described objects and have no sequential or technical meaning. Furthermore, unless otherwise specified, the terms "connection" and "linkage" used in this application include both direct and indirect connections (linkages).

[0024] Existing home treadmills have the following drawbacks: 1. The motor is large and heavy, which affects the overall size and weight of the treadmill; 2. The motor uses either a brushed motor or an asynchronous motor: the carbon brushes of a brushed motor are prone to wear and need to be replaced frequently, while asynchronous motors have low efficiency and lack burn-in protection. 3. It requires a transmission mechanism to achieve transmission, which increases the manufacturing cost. In addition, the presence of the transmission mechanism further increases the size and weight of the treadmill. 4. The transmission mechanism requires regular maintenance, which increases the maintenance cost of the treadmill.

[0025] The treadmill proposed in this embodiment can effectively solve the above problems.

[0026] See Figures 2-4 ,as well as Figure 10 and Figure 11 In this embodiment, a motor for a home treadmill is proposed and applied to a home treadmill. For ease of description, the "motor for a home treadmill" will be referred to as "motor" in the following text.

[0027] The home treadmill includes a main frame 100, a motor 200, and a drive belt 300. The main frame 100 has a drive roller 110 and a driven roller 120 rotatably mounted on it. The two ends of the drive belt 300 are respectively fitted onto the drive roller 110 and the driven roller 120. The drive roller 110 and the motor 200 constitute the power system of the treadmill.

[0028] A support shaft 130 is fixedly installed on the main frame 100, and the drive roller 110 is rotatably sleeved on the support shaft 130.

[0029] The motor 200 includes a stator 210 and a rotor 220. The stator 210 is mounted on the support shaft 130, and the rotor 220 is mounted on the inner wall of the drive drum 110.

[0030] In this embodiment, the treadmill motor 200 is a brushless motor 200, which eliminates the need for a commutator and carbon brushes, reducing noise during operation and extending the lifespan of the motor 200. Furthermore, compared to the brushed motors 200 or asynchronous motors 200 used in existing treadmills, the brushless motor 200 is more efficient and effectively reduces power consumption.

[0031] The stator 210 of the motor 200 is mounted on the support shaft 130, and the rotor 220 is mounted on the inner wall of the drive roller 110. This eliminates the need for the housing and end caps of a traditional motor 200, effectively simplifying the treadmill's structure, reducing its size and weight, and improving its integration. The motor 200 directly drives the drive roller 110, eliminating the need for a transmission mechanism and saving on maintenance costs associated with transmission mechanisms.

[0032] The stator 210 includes a core 211, which is fixedly mounted on a support shaft 130. The support shaft 130 is inserted into the central hole of the core 211, and the support shaft 130 and the central hole of the core 211 can be fixedly connected by means of interference fit or other methods. The chip 211 is made of optimized silicon steel sheets stacked and riveted together.

[0033] like Figure 5 As shown, the core 211 includes multiple teeth 2111 arranged in a ring array. Specifically, when the core 211 is mounted on the support shaft 130, the teeth 2111 of the core 211 are arranged in a ring array about the support shaft 130.

[0034] like Figure 6 As shown, insulating end plates 212 are provided on both axial end faces of the core 211. It should be noted that, for ease of observation, [the following text is incomplete and requires further context]. Figure 6 In the middle, the insulating unit 213 and the core 211 are in an assembled state.

[0035] like Figure 7 As shown, the insulating end plate 212 includes protruding teeth 2121, which are multiple and arranged in a circular array. Each protruding tooth 2121 corresponds to a tooth portion 2111, and the protruding teeth 2121 are attached to the side surface of the corresponding tooth portion 2111. (Refer to...) Figure 6 The insulating end plate 212 located on the left side of the core 211 has protruding teeth 2121 attached to and covering the left side of the corresponding tooth 2111; the insulating end plate 212 located on the right side of the core 211 has protruding teeth 2121 attached to and covering the right side of the corresponding tooth 2111.

[0036] like Figure 5 As shown, a groove 2112 is formed between adjacent teeth 2111. Figure 4 , Figure 8 and Figure 9 As shown, an insulating unit 213 is provided inside the groove 2112, and the insulating unit 213 is in contact with the inner wall of the groove 2112.

[0037] The insulating unit 213 corresponds one-to-one with the groove 2112, wherein the insulating unit 213 may be made of insulating paper.

[0038] The portion of the tooth 2121 and the insulating unit 213 covering the tooth 2111 constitutes the insulating layer of the tooth 2111. A winding is disposed on the insulating layer of the tooth 2111; due to the presence of the insulating layer, the winding does not directly contact the tooth 2111. It should be noted that the winding is not shown in the accompanying drawings for ease of observation.

[0039] During processing, the two insulating end plates 212 are fixed to both sides of the core 211 by means of snap-fitting, bonding, etc.; the insulating units 213 are inserted into each groove 2112 of the core 211 by an automatic paper inserter; the stator 210 is wound by an automatic winding device; the excess wire ends on the wound stator 210 are removed; the stator 210 is assembled and fixed on the support shaft 130.

[0040] In this embodiment, the rotor 220 includes a plurality of permanent magnets 221, which are arranged in a ring array about the support shaft 130.

[0041] like Figure 10 and Figure 11 Permanent magnets 221 are arranged around stator 210, and there is a gap between permanent magnets 221 and stator 210. Among them, the polarities of two adjacent permanent magnets 221 facing stator 210 are opposite. For example, two permanent magnets 221, A and B, are adjacent, where the N pole of A faces stator 210 and the S pole of B faces stator 210.

[0042] like Figure 12 As shown, a mounting cavity 111 is provided at one end of the inner wall of the drive roller 110. The stator 210 is disposed in the mounting cavity 111, and permanent magnets 221 are arranged sequentially along the circumference of the mounting cavity 111, and the permanent magnets 221 are fixed to the inner wall of the mounting cavity 111. The permanent magnets 221 can be fixed to the inner wall of the drive roller 110 by applying high-strength adhesive.

[0043] The drive roller 110 is made of magnetically conductive metal material, thus replacing the silicon steel sheet yoke used in traditional motors. The magnetically conductive metal drive roller 110 enables the rotor magnetic field circuit to be realized, achieving optimization of the magnetic circuit.

[0044] like Figure 13 As shown, a limiting part 112 is provided on the side of the mounting cavity 111 near the geometric center of the drive roller 110. The limiting part 112 is used to limit the installation of the permanent magnet 221.

[0045] Reference Figure 12A connecting cavity 113 is provided on the left side of the mounting cavity 111. Both the mounting cavity 111 and the connecting cavity 113 are cylindrical, and are adjacent and coaxially arranged. The inner diameter of the mounting cavity 111 is larger than the inner diameter of the connecting cavity 113. Thus, the end face of the connecting cavity 113 near the mounting cavity 111 forms a limiting part 112. When installing the permanent magnet 221, the permanent magnet 221 is inserted into the mounting cavity 111 through the opening on the right side of the connecting cavity 113. When the permanent magnet 221 comes into contact with the limiting part 112, it indicates that the permanent magnet 221 is installed in place.

[0046] like Figure 3 As shown, a connecting shaft 140 is fixedly installed on the main frame 100, and the driven roller 120 is rotatably sleeved on the connecting shaft 140.

[0047] In this embodiment, both the driving roller 110 and the driven roller 120 have hollow interiors. Each of the driving roller 110 and the driven roller 120 has several mounting bases 150 inside.

[0048] Considering stability and manufacturing costs, both the driving roller 110 and the driven roller 120 can be equipped with two mounting bases 150 inside.

[0049] like Figure 12 As shown, the mounting base 150 includes a mounting hole 151 for mounting the bearing 152.

[0050] The bearing 152 inside the drive roller 110 is sleeved on the support shaft 130, and the bearing 152 inside the driven roller 120 is sleeved on the connecting shaft 140. The structure of the mounting base 150 inside the driven roller 120 can be the same as that of the drive roller 110.

[0051] like Figure 3 As shown, the main unit frame 100 includes a frame, which includes a first component 161 and a second component 162. The first component 161 and the second component 162 are respectively located on both sides of the main unit frame 100 in the width direction.

[0052] The main frame 100 also includes a connecting plate 163. Both the first component 161 and the second component 162 are fixedly connected to the connecting plate 163, which can be achieved by welding, screws, or other methods. The connecting plate 163 can effectively improve the strength of the main frame 100.

[0053] The support shaft 130 and the connecting shaft 140 are positioned on opposite sides of the connecting plate 163 along its length. The connecting plate 163 is located within the inner cavity of the transmission belt 300. Figure 14 The diagram shown is a schematic of the transmission belt 300.

[0054] The bottom of the main unit frame 100 is provided with support feet 164, and there are multiple support feet 164. Among them, the support feet 164 can support the main unit frame 100.

[0055] In this embodiment, the rotor 220 of the motor 200 is integrated on the drive roller 110. When the treadmill is running, the roller acts directly on the magnetic yoke. The fully automatic winding stator 210 assembly is assembled onto the support shaft 130, and both the stator 210 and the rotor 220 are arranged inside the roller. The conveyor belt is made of non-magnetic material, which prevents magnetic leakage and achieves higher efficiency.

[0056] The motor 200 proposed in this application can greatly reduce material and labor costs: the stator 210 adopts automatic winding, eliminating the need for manual winding; it eliminates the need for soaking in high-strength insulating varnish and prolonged high-temperature baking; it eliminates the need for interlayer insulation; it eliminates the need for slot wedge embedding; it eliminates the need for end winding shaping; it eliminates the need for end binding and fixing; it eliminates the need for molding shaping; and it eliminates the need for end isolation phase insulation paper; the rotor 220 eliminates the need for cast aluminum winding with copper wire, commutator, and starting capacitor; the rotor 220 eliminates the need for light gold water treatment and high-temperature baking and curing of insulating varnish.

[0057] Among these improvements, the stator 210 significantly increases efficiency due to the absence of end windings; its optimized salient pole magnetic circuit design eliminates cogging effect, resulting in smoother, more stable operation and lower noise; and the rotor 220's permanent magnet 221 surface eliminates the need for steel sleeves, allowing for a smaller air gap. Furthermore, the motor 200 exhibits significantly improved response speed and torque. With the rotor 220 fixed to the inner wall of the drive drum 110, operation is safer and more reliable, even at high speeds, while also providing excellent heat dissipation. The design and layout of this motor 200 eliminates a large number of components, resulting in extremely simplified assembly. It also directly eliminates the failure rate associated with traditional motor 200 components and eliminates the need for an additional heat sink for cooling the motor 200.

[0058] This embodiment also proposes a treadmill that includes the motor mentioned above.

[0059] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0060] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A motor for a home treadmill, used in a home treadmill, characterized in that, The home treadmill includes a main frame and a drive belt. A drive roller and a driven roller are rotatably mounted on the main frame, and the two ends of the drive belt are respectively sleeved on the drive roller and the driven roller. A support shaft is fixedly mounted on the main frame, and the drive roller is rotatably sleeved on the support shaft. The motor for the home treadmill includes a stator and a rotor. The stator is mounted on the support shaft, and the rotor is mounted on the inner wall of the drive roller.

2. The motor for a home treadmill according to claim 1, characterized in that, The stator includes a core, which is fixedly mounted on the support shaft; The core includes teeth, which are multiple and arranged in a ring array about the support axis; Insulating end plates are provided on both ends of the core on both sides of the axial direction; each insulating end plate includes protruding teeth, and there are multiple protruding teeth distributed in a ring array; each protruding tooth corresponds to a tooth portion, wherein the protruding tooth is attached to the side surface of the corresponding tooth portion; A groove is formed between adjacent teeth; an insulating unit is disposed in the groove, and the insulating unit is in contact with the inner wall of the groove; The portion of the tooth and the insulating unit covering the tooth constitutes the insulating layer of the tooth; wherein, a winding is provided on the insulating layer of the tooth.

3. The motor for a home treadmill according to claim 1, characterized in that, The rotor includes a plurality of permanent magnets, which are arranged in a ring array about the support shaft; The permanent magnet is arranged around the stator, and there is a gap between the permanent magnet and the stator.

4. The motor for a home treadmill according to claim 3, characterized in that, An installation cavity is provided at one end of the inner wall of the drive roller; the stator is disposed in the installation cavity; the permanent magnets are arranged sequentially along the circumference of the installation cavity, and the permanent magnets are fixed to the inner wall of the installation cavity.

5. The motor for a home treadmill according to claim 4, characterized in that, A limiting part is provided on the side of the mounting cavity near the geometric center of the active roller, and the limiting part is used to limit the installation of the permanent magnet.

6. The motor for a home treadmill according to claim 1, characterized in that, A connecting shaft is fixedly installed on the main frame, and the driven roller is rotatably sleeved on the connecting shaft.

7. The motor for a home treadmill according to claim 6, characterized in that, Both the driving roller and the driven roller are provided with several mounting bases inside; The mounting base includes a mounting hole for mounting a bearing; The bearing inside the driving roller is sleeved on the support shaft, and the bearing inside the driven roller is sleeved on the connecting shaft.

8. The motor for a home treadmill according to claim 1, characterized in that, The main frame includes a frame, which includes a first component and a second component, with the first component and the second component positioned on opposite sides of the main frame in the width direction.

9. The motor for a home treadmill according to claim 8, characterized in that, The main frame also includes a connecting plate, and both the first component and the second component are fixedly connected to the connecting plate.

10. A treadmill, characterized in that, The motor for a home treadmill includes any one of claims 1-9.

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