Electrical outlet device, motor and electrical appliance

Abstract

The invention relates to the technical field of electric machines. An electric appliance outlet device provided by the invention comprises an electric appliance housing, a sealing gasket and an outletbox structure. The electric appliance shell comprises a first mounting surface, wherein the first mounting surface is provided with an outlet port; the sealing gasket is provided with a wiring hole and at least three limit holes arranged dispersedly; the outlet box structure comprises a wire inlet and a second mounting surface, wherein the wire inlet is arranged on the second mounting surface; atleast three limit protrusions protrude from the second mounting surface. Each limiting protrusion penetrates each limiting hole one by one, and each limiting protrusion is pressed against the first mounting surface. The motor of the invention comprises an electrical outlet device. The electrical appliance of the present invention comprises the aforementioned motor. Under the support of the limiting protrusion, a relatively stable distance between the first mounting surface and the second mounting surface can be maintained to avoid excessive extrusion of the gasket due to the excessive proximity between the outlet box structure and the electric appliance housing, to ensure that the gasket is in a set compression range and that the compression ratio of the gasket is within a reasonable range.

Description

technical field [0001] The invention relates to the technical field of electric motors, in particular to an electrical appliance outlet device, a motor and an electrical appliance. Background technique [0002] In the prior art, the cables drawn from the electrical outlet device are drawn out through the outlet box structure, and the outlet box structure has a mechanical protection effect on the lead wires. For electrical outlet devices that require sealing, a gasket needs to be placed between the outlet box structure and the electrical housing (such as the casing, end cover, etc.) of the electrical outlet device to prevent external moisture or impurities inside the electrical housing. [0003] The sealing method of the traditional electrical outlet box device includes a gasket and a screw. After the screw passes through the second mounting hole on the outlet box structure and the second installation hole on the gasket, it is connected with the threaded hole on the electrica...

AI Technical Summary

Problems solved by technology

[0004] The extrusion force on the gasket has a great influence on the sealing effect. If the extrusion force on the gasket is too small, it will easily cause the gasket to loosen and the sealing effect will not be good; if the extrusion force on the gasket is too large, it will easily The gasket will be damaged at an accelerated rate due to excessive extrusion force, which is not conducive to the long-term sealing effect of the gasket; therefore, in order to ensure the long-term effective sealing between the outlet box and the electrical housing, it is necessary to keep the compression rate of the gasket within a certain range Within (eg: 15%-30%)

[0005] However, in the prior art, the size of the extrusion force applied between the outlet box structure and the electrical housing when the screws are locked is entirely dependent on the operator, and it is impossible to ensure that the extrusion force on the gasket is adjusted to an appropriate range. It cannot guarantee that the compression ratio of the gasket remains within an appropriate range, which is not conducive to the long-term effective sealing between the outlet box structure and the electrical housing

[0006] The structure of the terminal box and the gasket are widely used in motors. When the motor is running with load, it will vibrate continuously. If the pressure of the terminal box shell on the gasket is small, the gasket may move relative to the terminal box and affect the sealing effect.

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