Alternating current asynchronous lifting motor

Abstract

The utility model discloses an alternating current asynchronous lifting motor, which comprises a box body and a box cover which form a lifting motor shell, the box body is connected with the box cover through screws, one side of the box body and one side of the box cover are provided with a stator assembly, a rotor assembly and a driving element used for the lifting motor, and one side, far away from the box body, of the stator assembly is provided with an end cover; a mounting boss is arranged on the top of the box cover, and a mounting hole is formed in the mounting boss and used for mounting and fixing the lifting motor. According to the utility model, the rotor assembly and the lifting screw rod are arranged in parallel, so that compared with the prior art that the rotor assembly and the lifting screw rod of the lifting motor are arranged in parallel, the lifting motor is not provided with a higher bulge, and the installation space of the lifting motor can be saved; and the end cover and the box body are connected through the adjusting bolt, so that the distance between the end cover and the box body can be adjusted to adapt to lifting motors with different torques, and the production cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting motors, in particular to an AC asynchronous lifting motor. Background Art

[0002] Lifting motors are widely used in various home treadmills and other fitness equipment. Indoor fitness has become one of the main ways for many modern people to keep fit. As indoor fitness equipment, treadmills are indispensable whether at home or in public gyms; and because of the simple form of exercise, they are often the first choice for home fitness. At present, most treadmills on the market have a slope adjustment function. Users can set the slope of the treadmill according to their needs through a lifting motor. The existing lifting motors usually have a lifting screw parallel to the stator and rotor structure, and drive the lifting screw to rotate through multiple sets of gears, so that the nut sleeve rises or falls to adjust the slope of the treadmill. For example, a lifting motor suitable for the slope of a treadmill is disclosed with announcement number CN204337630U; a shell structure and a lifting motor using the shell structure are disclosed with announcement number CN210839144U, which will cause it to occupy a large space during installation. The development trend of existing treadmills is to be simple and beautiful. If the previous lifting motor is used, a boss needs to be set on the treadmill casing. This method affects the appearance of the treadmill, and also affects its packing rate when the treadmill is packaged and shipped, thereby increasing the manufacturer's shipping and transportation costs. Utility Model Content

[0003] In order to solve the problem that the above-mentioned existing lifting motors are usually arranged in parallel with the stator and rotor structure, and the lifting screw is driven to rotate by multiple sets of gears, resulting in a large space being occupied during installation, the utility model provides an AC asynchronous lifting motor.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An AC asynchronous lifting motor comprises a box body and a box cover constituting a lifting motor housing, the box body and the box cover being connected by screws, and a stator assembly and a rotor assembly are arranged on one side of the box body and the box cover, which are driving elements of the lifting motor, and an end cover is arranged on the side of the stator assembly away from the box body; a mounting boss is arranged on the top of the box cover, and a mounting hole is arranged on the mounting boss for installing and fixing the lifting motor; a bearing seat is arranged on the bottom of the box body, and a lifting screw is connected to the bearing seat in a vertical direction for rotation, a helical gear is arranged on the top of the lifting screw, and the helical gear is transmission-connected to the rotor assembly through a worm, so that the lifting screw and the rotor assembly are arranged vertically in an L shape; the bottom end of the lifting screw passes through the bottom of the box body and is connected to a nut sleeve, and a pin shaft hole is arranged at the bottom end of the nut sleeve for connecting to an external component to be lifted; an electric control component is arranged in the box body for controlling the operation of the lifting motor.

[0006] Preferably, the end cover is connected to the box body by an adjusting bolt, and the distance between the end cover and the box body can be adjusted, which is used to adjust the number of silicon steel sheets on the stator assembly to achieve the effect of adjusting the torque of the lifting motor.

[0007] Preferably, a potentiometer is provided in the box body and is electrically connected to the electric control component. A potentiometer gear is provided on the potentiometer and meshes with an annular tooth groove provided on the top of the bevel gear.

[0008] Preferably, the box cover is made of metal, and the box body and the end cover are made of plastic, which ensures the installation structure strength of the lifting motor while reducing production costs.

[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model sets the rotor assembly parallel to the lifting screw, which has no higher protrusion compared to the prior lifting motor rotor assembly and the lifting screw being set parallel to each other, and can save more installation space for the lifting motor; and the end cover and the box body are connected by adjusting bolts, and their spacing can be adjusted to adapt to lifting motors with different torques, thereby saving production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the three-dimensional main structure of an embodiment of the utility model;

[0011] Figure 2 This is a schematic diagram of the main structure of an embodiment of the utility model;

[0012] Figure 3 It is a schematic diagram of the internal structure of an embodiment of the utility model;

[0013] Figure 4 for Figure 3 A is an enlarged schematic diagram.

[0014] In the figure: 1, box body, 2, box cover, 201, mounting boss, 3, nut sleeve, 301, pin shaft hole, 4, stator assembly, 5, end cover, 6, adjusting bolt, 7, lifting screw, 8, bearing seat, 9, bevel gear, 901, tooth groove, 10, rotor assembly, 11, worm, 12, electronic control assembly, 13, potentiometer, 1301, potentiometer gear. DETAILED DESCRIPTION

[0015] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "vertical", "horizontal", 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.

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0017] like Figures 1 to 4 As shown, the embodiment of the utility model includes a box body 1 and a box cover 2 constituting a lifting motor housing, the box body 1 and the box cover 2 are connected by screws, and a stator assembly 4 and a rotor assembly 10 are arranged on one side of the box body 1 and the box cover 2, which are used as driving elements of the lifting motor, and an end cover 5 is arranged on the side of the stator assembly 4 away from the box body 1; a mounting boss 201 is arranged on the top of the box cover 2, and a mounting hole is arranged on the mounting boss 201 for mounting and fixing the lifting motor; a bearing seat 8 is arranged at the bottom of the box body 1, and a lifting screw 7 is connected to the bearing seat 8 in a vertical direction, and a bevel gear 9 is arranged on the top of the lifting screw 7, and the bevel gear 9 is connected to the rotor assembly 10 through a worm 11, so that the lifting screw 7 and the rotor assembly 10 are arranged vertically in an L shape, so that compared with the existing lifting motor rotor assembly and the lifting screw arranged in parallel, it has no higher protrusion, which can save more installation space of the lifting motor;

[0018] The bottom end of the lifting screw 7 passes through the bottom of the box body 1 and is connected to a nut sleeve 3. The bottom end of the nut sleeve 3 is provided with a pin shaft hole 301 for connecting with an external part to be lifted. When the lifting motor is started, the rotating shaft in the rotor assembly 10 rotates to drive the worm 11 to rotate, thereby driving the lifting screw 7 to rotate. Since the nut sleeve 3 is connected to the external part to be lifted through the pin shaft hole 301, the nut sleeve 3 cannot rotate and can only move up and down, driving the external part to be lifted to move up and down for lifting. An electric control component 12 is provided in the box body 1 for controlling the operation of the lifting motor.

[0019] Preferably, the end cover 5 is connected to the box body 1 by an adjusting bolt 6, and the distance between the end cover 5 and the box body 1 can be adjusted to adjust the number of silicon steel sheets on the stator assembly 4 to achieve the effect of adjusting the torque of the lifting motor. The more silicon steel sheets there are, the greater the torque of the lifting motor, and the correspondingly larger the distance between the end cover 5 and the box body 1 will be.

[0020] Preferably, a potentiometer 13 is provided in the box body 1, which is electrically connected to the electronic control component 12. A potentiometer gear 1301 is provided on the potentiometer 13, which meshes with the annular tooth groove 901 provided on the top of the bevel gear 9, and is used to indicate the rotor position of the lifting motor. The controller in the electronic control component 12 can obtain the lifting position of the lifting screw 7 in real time by obtaining the resistance value of the potentiometer 13, thereby knowing the position or slope of the external component to be lifted.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An AC asynchronous lifting motor, characterized in that: It includes a box body and a box cover that constitute a lifting motor shell, the box body and the box cover are connected by screws, and a stator assembly and a rotor assembly are arranged on one side of the box body and the box cover, which are driving elements for the lifting motor, and an end cover is arranged on the side of the stator assembly away from the box body; a mounting boss is arranged on the top of the box cover, and a mounting hole is arranged on the mounting boss for installing and fixing the lifting motor; a bearing seat is arranged on the bottom of the box body, and a lifting screw is connected to the bearing seat in a vertical direction for rotation, a helical gear is arranged on the top of the lifting screw, and the helical gear is transmission-connected to the rotor assembly through a worm, so that the lifting screw and the rotor assembly are arranged vertically in an L shape; the bottom end of the lifting screw passes through the bottom of the box body and is connected to a nut sleeve, and a pin shaft hole is arranged at the bottom end of the nut sleeve for connecting with an external lifting component to be lifted; an electric control component is arranged in the box body for controlling the operation of the lifting motor.

2. The AC asynchronous lifting motor according to claim 1, characterized in that: The end cover is connected to the box body by adjusting bolts, and the distance between the end cover and the box body can be adjusted, which is used to adjust the number of silicon steel sheets on the stator assembly to achieve the effect of adjusting the torque of the lifting motor.

3. An AC asynchronous lifting motor according to claim 1 or 2, characterized in that: A potentiometer is arranged in the box body and is electrically connected to the electric control component. A potentiometer gear is arranged on the potentiometer and is meshed with an annular tooth groove arranged on the top of the helical gear.

4. The AC asynchronous lifting motor according to claim 3, characterized in that: The box cover is made of metal material, and the box body and the end cover are made of plastic material, which ensures the installation structure strength of the lifting motor while reducing the production cost.

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