JPS63140892A - Guard device for fan device - Google Patents

Abstract

PURPOSE:To perform safety electronic control by fixing a front guard and a rear guard coupled with a ring-shaped coupler made of synthetic resin with a conductive clip. CONSTITUTION:A metallic clip 1 having electric conductivity is provided on a coupler 106, and a front guard 103 and a rear guard 104 are clipped. The front guard 103 is coupled with the fixing groove section 107 of the ring-shaped coupler 106 made of synthetic resin. The front and rear guards 103, 104 are electrically conducted by the clip 1 and can be used for a fan device having the safety electronic control stopping a motor 102 when these guards are touched by a hand.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a guard device for a blower device.

BACKGROUND OF THE INVENTION In recent years, guard devices for air blowers have been remarkable in terms of ease of attaching and detaching the guard and aesthetic appearance.

Conventionally, this type of electric fan has had a configuration as shown in FIG. That is, the blade 1 driven by the electric motor 102
01 is protected by a front guard 103 and a rear guard 104. The front guard 103 has its parts 1 and 1 fitted into a ring-shaped fitting 106 made of fat, and its outer circumference fitted into a plurality of fixing grooves 107 provided on the inner circumference of the ring-shaped coupling 106. be combined. Also, the electric motor 102
After the guard 104 is attached to the ring, the guard 104 is fitted into the ring-shaped coupling tool 106, and the outer circumferential portion is connected to the fixing groove 107 on the inner circumference of the coupling tool 106.

The front guard 103 and the rear guard 104 are made of a synthetic resin clip 108 provided at the bottom of a ring-shaped connector 106.
It was fixed by.

Problems to be Solved by the Invention In such a conventional configuration, the outer circumferential portions of the front guard 103 and the rear guard 104 fit into the fixing groove 107 provided in the inner circumferential portion of the ring-shaped connector 106. The connector 1 is fixed by the clip 108 made of synthetic resin.
o6. Since the clip 108 is an insulator, the front guard 10
There is no electrical continuity between 3 and rear guard 104. Therefore, there is a problem that this guard device cannot be used in a blower device that has a safety electronic control (stop circuit) that causes a closed circuit and stops the motor 1o2 when either guard 103 or 104 is engaged. there were.

The present invention solves this problem by using a guard device that uses a ring-shaped connector made of synthetic resin to enable electrical continuity between the front guard and the rear guard, and is also applicable to blower devices with safety electronic controls. The purpose is to provide a guard device that can

Means for Solving the Problems To achieve this object, the present invention provides a blade, an electric motor for driving the blade, a front guard and a rear guard that protect the blade and have electrical conductivity, and The device includes a synthetic resin connector for connecting the guard and the rear guard, and the connector is provided with an electrically conductive clip that comes into contact with the front guard and the rear guard.

Function By fixing the front and rear guards with clips according to the above configuration, electrical continuity is established between the front and rear guards, and the present invention can be applied to the guard of a blower equipped with a safety electronic control device.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 to 3. It should be noted that the same components as those in the prior art are given the same numbers and detailed explanations will be omitted.

The blade 1o1 driven by the electric motor 1o2 has a front guard 103 and a rear guard 1 that have conductivity through plating.
Protected by 04. The front guard 103 is fitted into a ring-shaped coupling tool 106 made of synthetic resin, and the outer circumferential portion thereof is fitted into a plurality of fixing grooves 107 provided on the inner circumference of the coupling tool 106 to be coupled. The rear guard 104 attached to the electric motor 102 is fitted into a ring-shaped connector 106 into which the front guard 103 is fitted, and the outer circumferential portion thereof is also engaged with a fixing groove 107 to be coupled. The connector 108 is provided with a metal clip 1 having electrical conductivity, and the front guard 103 and the rear guard 104 are clipped and fixed by this clip 1.

With the above configuration, the front guard 103 and the rear guard 104 engaged by the ring-shaped connector 106 are fixed by the metal clip 1, so that the front and rear guards 10
3 and 104 are electrically connected. Therefore, it can be used in an air blower having a safety electronic control (stop circuit) that stops the electric motor 102 when it is guarded.

Furthermore, by making the clips made of metal, the clips can be made durable and more resistant to impact than those made of synthetic resin, making them less likely to break. In this embodiment, the clip is made of a metal that is electrically conductive, but the clip may be made of a material other than metal as long as it is electrically conductive.

Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, when the front guard and the rear guard, which are engaged by a ring-shaped connector made of synthetic resin, are fixed by a clip having electrical conductivity, This has the effect that the front and rear guards are electrically conductive, and can be used in a blower device that has a safety electronic control (stop circuit) that stops the motor when the guard is closed.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a guard device of an air blower according to an embodiment of the present invention, Fig. 2 is a sectional view taken along line xx' of the guard device of the air blower in an assembled state, and Fig. 3 is an exploded perspective view of the guard device of the air blower according to an embodiment of the present invention. FIG. 4 is an exploded perspective view of the conventional guard device of a blower device. 1... Clip, 101... Feather, 1
02... Electric motor, 103... Front guard, 104... Rear guard, 106... Connector. Name of agent: Patent attorney Toshio Nakao and 1 other person f-
--Click 7゜fO6-廿l? Figure 3

Claims (1)

[Claims] The method includes a blade, an electric motor that drives the blade, a front guard and a rear guard that protect the blade and have electrical conductivity, and a synthetic resin connector that connects the front guard and the rear guard. A guard device for a blower device, wherein the tool is provided with an electrically conductive clip that abuts and fixes the front guard and the rear guard.