Lifting motor box cover for increasing creepage distance

Abstract

The utility model discloses a lifting motor box cover for increasing creepage distance, which comprises a box cover, the box cover is formed by assembling a metal part and an insulating part, and the insulating part is provided with a microswitch mounting part used for mounting a microswitch and a grounding wire. According to the utility model, the part of the lifting motor box cover, which is provided with the microswitch, is arranged to be the insulated plastic part, so that the problem of insufficient creepage distance of an electrified part during grounding can be effectively solved, the lifting motor box cover is firmly assembled with a metal part, and the structural strength of the lifting motor is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting motors, in particular to a lifting motor box cover for increasing the creepage distance. Background Art

[0002] Lifting motors are widely used in various household treadmills and other fitness equipment. Indoor fitness exercises have become one of the main fitness methods for many modern people. As an indoor fitness equipment, the treadmill is indispensable whether at home or in a public gym; and due to its simple exercise form, it is often the first choice for home fitness equipment. Currently, basically all treadmills on the market have a slope adjustment function. Users can set the slope of the running platform through a lifting motor according to their own needs. Existing lifting motors usually have a lifting screw arranged in parallel with the stator and rotor structures, and multiple groups of gears are used to drive the lifting screw to rotate, so that the nut sleeve rises or falls to adjust the slope of the running platform.

[0003] The transmission box cover of the existing lifting motor is generally made of aluminum castings. A microswitch is arranged on the outer surface of the box cover to control the lifting motor, and a grounding wire is also arranged here. However, according to user feedback, this method will cause the creepage distance from the live part to the ground to be less than 4 mm, posing a risk of short circuit. The existing solution is to place insulating sheets above and below the microswitch, but this method increases the cost, and the installation steps are more cumbersome and not stable enough. Summary of the Utility Model

[0004] In order to solve the problem that the transmission box cover of the existing lifting motor made of aluminum castings will cause the creepage distance from the live part to the ground to be less than 4 mm, posing a risk of short circuit, the utility model provides a lifting motor box cover for increasing the creepage distance.

[0005] To achieve the above object, the utility model provides the following technical solutions:

[0006] A lifting motor box cover for increasing the creepage distance, including a box cover. The box cover is assembled by a metal part and an insulating part, and a microswitch installation part is arranged on the insulating part for installing a microswitch and a grounding wire.

[0007] Preferably, a first step portion is arranged at one end of the metal part close to the insulating part, and a third step portion is arranged at the corresponding insulating part, so that when the metal part and the insulating part are assembled, they are buckled with each other to increase the strength.

[0008] Preferably, a second step portion is arranged at one end of the metal part close to the insulating part, and a fourth step portion is arranged at the corresponding insulating part. A first through hole is arranged on the second step portion, and a second through hole is arranged at the corresponding position of the fourth step portion for a screw to penetrate through to fix the metal part and the insulating part on the lifting motor box body.

[0009] Preferably, the metal component is made of ADC12 aluminum casting, and the insulating component is made of ABS plastic material.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: By setting the part of the lifting motor box cover where the micro switch is installed as an insulating plastic part, the present utility model can effectively solve the problem of insufficient creepage distance of live parts during grounding, and it is firmly assembled with the metal component without affecting the structural strength of the lifting motor. Description of the Drawings

[0011] Figure 1 is the front view structural schematic diagram of the existing lifting motor box cover;

[0012] Figure 2 is the front view structural schematic diagram of the lifting motor box cover of the embodiment of the present utility model;

[0013] Figure 3 is the front view structural schematic diagram of the metal component of the embodiment of the present utility model;

[0014] Figure 4 is Figure 3 the sectional view along A-A in ;

[0015] Figure 5 is the front view structural schematic diagram of the insulating component of the embodiment of the present utility model;

[0016] Figure 6 is Figure 5 the sectional view along B-B in ;

[0017] Figure 7 is the sectional view structural schematic diagram after the metal component and the insulating component of the embodiment of the present utility model are assembled.

[0018] In the figure: 1. Box cover, 101. Metal component, 102. Insulating component, 103. First through hole, 104. First step portion, 105. Second step portion, 106. Third step portion, 107. Fourth step portion, 108. Second through hole, 2. Micro switch installation portion. Detailed Embodiment

[0019] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0021] As shown in Figures 2 to 7 the embodiment of the present utility model includes a box cover 1, which is assembled by a metal component 101 and an insulating component 102, and a microswitch installation part 2 is provided on the insulating component 102 for installing a microswitch and a ground wire.

[0022] Preferably, a first stepped portion 104 is provided at one end of the metal component 101 close to the insulating component 102, and a third stepped portion 106 is provided at the corresponding insulating component 102, so that the metal component 101 and the insulating component 102 are buckled with each other when assembled to increase strength; a second stepped portion 105 is provided at one end of the metal component 101 close to the insulating component 102, and a fourth stepped portion 107 is provided at the corresponding insulating component 102, and a first through hole 103 is provided on the second stepped portion 105, and a second through hole 108 is provided at the corresponding position of the fourth stepped portion 107 for a screw to penetrate through to fix the metal component 101 and the insulating component 102 to the lifting motor box body.

[0023] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A lifting motor box cover for improving creepage distance, characterized in that: It includes a box cover which is assembled by a metal component and an insulating component, and a microswitch mounting part is provided on the insulating component for mounting a microswitch and a grounding wire.

2. The lift motor box cover for improving the creepage distance according to claim 1, characterized in that: One end of the metal component close to the insulating component is provided with a first step portion, and a third step portion is provided at the corresponding insulating component, so that when the metal component and the insulating component are assembled, they are buckled with each other to increase the strength.

3. The lift motor box cover for increasing the creepage distance according to claim 1 or 2, characterized in that: One end of the metal component close to the insulating component is provided with a second step portion, and a fourth step portion is provided at the corresponding insulating component. A first through hole is provided on the second step portion, and a second through hole is provided at the corresponding position of the fourth step portion for a screw to penetrate through to fix the metal component and the insulating component on the lifting motor box body.

4. The lifting motor box cover for increasing the creepage distance according to claim 3, characterized in that: The metal component is made of ADC12 aluminum casting, and the insulating component is made of ABS plastic material.

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