JPS5886121A - Electric cleaner with rotary brush - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION A conventional electric vacuum cleaner with a rotating brush having a clutch device between a motor and a rotating brush has a nozzle section 1 and a main body 2 connected thereto, as shown in FIGS. 1 and 2. The main body is constituted by the handle portion 3 provided on the main body 2. When the rotary brush 4 is locked by getting the edge of the carpet caught in the rotary brush inside the nozzle part i, the clutch device 6 connected via the belt 6 operates and the connection between the motor 7 and the rotary brush 4 is released. This prevents the belt 8 and motor 7 from being affected by the locking of the rotating brush 4.

However, this clutch device 6, when the rotating brush is locked,
Since the only function is to release the connection between the motor 7 and the rotating brush 4, even if the brush 4 locks once, the motor 7 continues to rotate, making it extremely difficult for the user to check the operation of the clutch device 6. 0 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 with higher usability.

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 controlled by the clutch device 6.
is transmitted to the rotating brush 4 via. Clutch device 60
On the rotating plate 27 side, there is a rotating piece 9 that rotates υ due to centrifugal force,
A moving member 1o that is moved by being pushed by this member 9 is 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 60 rotates, the rotating piece 9 also rotates, and due to the centrifugal force, it rotates around the fulcrum in the direction of the arrow in the figure, moving the moving member 1o to the right.
The power switch 11 is operated by pushing the power switch 11 in the opposite direction. The starting switch 12 is a hand-held switch that operates and opens only when it is pressed by hand, and is provided on the handle 3 in FIG. 1. Conversely, when the power switch 11 is operated by being pushed by the moving member 1o in the normally open state,
It becomes a closed state. These switches 11 and 12 are connected in parallel as shown in FIG. Note that the rotating piece 9. By appropriately selecting the shape of the moving member 1o, the rotational resistance of the rotating piece 9, and the sliding resistance of the moving member 10, the power switch 1
The operation point in step 1 can be freely selected.

When the start switch 12 is pressed, the motor 7 is started and the clutch device 6 also starts rotating. At the same time, the rotating piece 9 starts rotating around the axis, and due to the centrifugal force, it rotates around the fulcrum in the direction of the arrow in the figure, pushing the moving member 1o to the right and operating the power switch 11. 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, if the rotating brush 4 catches the edge of the carpet and locks in this state, the rotating brush side of the clutch device 6 will also be locked, and the rotating piece 9 will lose its centrifugal force and return to its original position, causing the moving member to It will return by 1 degree. 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 open.

As described above, in the vacuum cleaner with a rotating brush according to the present invention, when the rotating brush locks due to carpet etc. getting caught and the clutch device operates, the power is cut off and the motor stops, so the user can easily operate the clutch device. Since it can be confirmed immediately, it can be dealt with immediately. Therefore, it has the advantage of being extremely user-friendly.

[Brief explanation of the drawing]

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 a conventional main part, FIG. 3 is a plan view showing a schematic structure of a main part in an embodiment of the present invention, and FIG. 4 is a circuit diagram thereof. 4... Rotating brush, 6... Clutch device, End... Motor, 1o... Moving member,
11...Power switch, 12...Start switch. Name of agent: Patent attorney Toshio Nakao and 1 other person @1
Figure '2 Figure 9 Figure 4 97

Claims (1)

[Claims] A clutch device is provided between the motor and the rotating brush driven by the motor, a moving member is provided on the rotating brush side of the clutch device that moves by the rotation of the clutch device, and a power switch that is operated by the movement of this moving member is placed opposite to the moving member. This vacuum cleaner with a rotating brush is provided with a start switch which rotates a first clutch device and puts the power switch into an operating state, separately from the power switch.