JPS6366526B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A conventional electric vacuum cleaner with a rotary brush having a clutch device between a motor and a rotary brush is shown in FIGS.
As shown in the figure, the main body is composed of a nozzle part 1, a main body 2 connected to the nozzle part 1, and a wall part 3 provided on the main body 2. When the edge of the carpet is caught in the rotating brush inside the nozzle part 1 and the rotating brush 4 is locked, the clutch device 6 connected via the belt 5 operates to disconnect the motor 7 and the rotating brush 4. The belt 8 and motor 7 are prevented from being affected by the locking of the rotating brush 4. However, since this clutch device 6 only has the function of releasing the connection between the motor 7 and the rotating brush 4 when the rotating brush 4 is locked, the motor 7 continues to rotate even if the rotating brush 4 is locked, and the user cannot lock the clutch device 6. It was very difficult to check the operation.

An object of the present invention is to improve the drawbacks of the conventional vacuum cleaner with a rotating brush and to provide a vacuum cleaner that is more user-friendly.

A vacuum cleaner with a rotating brush according to an embodiment of the present invention is shown in FIGS. 3 and 4. The same parts as in FIGS. 1 and 2 are given the same reference numerals. Here, the rotation of the motor 7 is transmitted to the rotating brush 4 via the clutch device 6. On the rotating brush side of the clutch device 6, a rotating piece 9 that rotates due to centrifugal force and a moving member 10 that is pushed and moved by the rotating piece 9 are provided. At startup, both the motor side and the rotating brush side of the clutch device 6 rotate, and when the rotating brush 4 is locked, only the rotating brush side of the clutch device 6 is locked, and the motor side continues to rotate. When the rotating brush side of the clutch device 6 rotates, the rotating piece 9 also rotates, and due to its centrifugal force, it rotates around the fulcrum in the direction of the arrow in the figure, pushing the movable member 10 to the right, and turning the power switch 11 off. It operates. The activation switch 12 is a hand-held switch that operates and becomes open only when it is pressed by hand, and is provided on the handle 3 in FIG. 1. Conversely, when the power switch 11 is normally in the open state and is pushed by the moving member 10 and operated, it becomes in the closed state. These switches 11 and 12 are connected in parallel as shown in FIG. The operating point of the power switch 11 can be freely selected by appropriately selecting the shapes of the rotating piece 9 and the moving member 10, the rotational resistance of the rotating piece 9, and the sliding resistance of the moving member 10.

When the start switch 12 is pressed, the motor 7 starts,
The clutch device 6 also begins to rotate. At the same time, the rotating piece 9 starts rotating around the shaft, and due to the centrifugal force, it rotates around the fulcrum in the direction of the arrow in the figure, pushing the moving member 10 to the right, and turning the power switch 1 off.
1 to the closed state. At this time, even if the start switch 12 is released and opened, the motor 7 continues to rotate because the power switch 11 is in the closed state. However, in this state, when the rotating brush 4 wraps around the edge of the carpet and locks, the rotating brush side of the clutch device 6 also locks, and the rotating piece 9 loses its force and returns to its original position, causing the moving member to 10 will also return. Then, the power switch 11 also returns to the open state, thereby cutting off the connection between the motor 7 and the power source, and the motor 7 stops. At this time, since the start switch 12 is an automatic return type,
It is already in the open state.

As described above, in the electric vacuum cleaner with a rotating brush according to the present invention, when the rotating brush becomes locked due to carpet etc. getting caught and the clutch device operates, the power is cut off and the motor stops, so that the user can easily operate the clutch device. Since it can be confirmed, immediate action can be taken. Therefore, it has the feature of being extremely easy to use for the user.

[Brief explanation of drawings]

Fig. 1 is an external perspective view of a vacuum cleaner with a rotating brush, Fig. 2 is a plan view showing a schematic structure of the main parts of a conventional vacuum cleaner, and Fig. 3 is a plan view showing a schematic structure of main parts in an embodiment of the present invention. FIG. 4 is a circuit diagram of the same. 4... Rotating brush, 6... Clutch device, 7...
...Motor, 10...Moving member, 11...Power switch, 12...Start switch.

Claims (1)

[Claims] 1 A clutch device is provided between a motor and a rotating brush driven by the motor, a rotating piece is provided on the rotating brush side of the clutch device to rotate by the rotation of the clutch device, and the movement is caused by the rotation of this rotating piece. A rotating member is provided, and a power switch that is operated by the movement of the moving member is provided opposite the moving member, and separately from the power switch, a starting switch is provided for initially rotating the clutch device and putting the power switch into the operating state. Vacuum cleaner with brush.