JPH0137136B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a vacuum cleaner.

Conventionally, there is a vacuum cleaner as shown in FIG. 1 that is used exclusively for floor surfaces. That is, a brush storage chamber 2 is formed in the front part of this vacuum cleaner body 1, and this brush storage chamber 2 has a rotary brush 4 for sweeping up the floor surface 3 and a dedicated rotary brush 4 for rotating the rotary brush 4 in one direction. A motor 5 is provided.
Therefore, in addition to the electric blower 6 that creates negative pressure in the dust collection chamber 7, this vacuum cleaner must be specially equipped with a motor 5 just for rotating the rotating brush 4, which increases power consumption and weight. becomes bulky and large.

In addition, as a type that drives a turbine using the exhaust air of an electric blower, the Utility Model Publication No. 39-36553
There is something described in the No. however,
In this type, the rotating direction of the rotating brush 4 is determined according to the forward direction of the vacuum cleaner body 1, so
When moving the vacuum cleaner main body 1 backward, there is a drawback that the rotation of the rotating brush 4 hinders the backward movement.

This invention was made in view of the above points, and an object of the present invention is to obtain a vacuum cleaner that consumes less power, is light in weight, and has good running performance.

This invention applies exhaust air from an electric blower to a turbine from a movable nozzle to rotate the turbine together with rotating brushes, thereby omitting the provision of a motor for the turbine, thereby reducing power consumption and weight. In addition, depending on the direction in which the vacuum cleaner is run, the operating force acting on the operating handle changes to either forward or backward, and this operating force deflects the movable nozzle to change the direction of rotation of the turbine. Therefore, when moving the vacuum cleaner body forward or backward, the rotating direction of the rotating brush is changed according to the rotating direction, reducing running resistance, and moreover, the rotating direction of the rotating brush can be automatically switched. It is designed to improve operability.

An embodiment of the present invention will be explained based on FIGS. 2 to 4. Reference numeral 10 denotes a vacuum cleaner main body 10 which is divided into left and right parts from the center, and a brush storage chamber 12 for storing a rotating brush 15 is formed in the front part of the vacuum cleaner main body 10 by a partition wall 11. A suction opening 14 facing the floor surface 13 is provided on the lower surface of the vacuum cleaner body 10.
is formed. Further, a brush shaft 16 is formed at the end of the rotating brush 15 and is held by a bearing (not shown). A dust collection case 17 is detachably attached to the central part of the vacuum cleaner body 10, and a filter 19 is inserted into the rear opening side of the dust collection chamber 18 of the dust collection case 17. The front opening 20 of 18 is the suction opening 14
It is connected to the rear of the Next, an electric blower 2 is connected to the rear of the vacuum cleaner body 10 by a partition wall 22.
An electric blower chamber 24 and a turbine storage chamber 25 are formed. This turbine storage room 2
5 has an exhaust port 26 formed therein and houses a turbine 27 therein. At the end of this turbine 27 is a turbine shaft 28 held by the partition wall 22.
are formed, and one end of these turbine shafts 28 protrudes laterally and is connected to the rotating brush 15 by a timing belt 29 as a transmission means. Further, the electric blower chamber 24 has a suction hole 3
0 communicates with the dust collection chamber 18. A hole 31 formed in the partition wall 22 has a movable nozzle 3 tapered toward the turbine 27.
2 is inserted through the movable nozzle 32, and a mounting shaft 33 pivotally mounted to the mounting hole 22a of the partition wall 22 and a shaft 34 located below the mounting shaft 33 are formed. Further, at the rear end of the vacuum cleaner main body 10, an annular rib 37 is provided in which elongated holes 35 and 36 are formed in the upper and lower surfaces of the outer periphery and are elongated in the front and back direction. The operating handle 3 has a protruding stopper 38 that fits into the
A connecting shaft 40 is attached to the operating handle 39 so as to be movable in the front and back direction, and the other end of a connecting shaft 40 is rotatably connected to the shaft 34 with one end secured to the shaft 34 by a screw 41. connected. Note that the legs 4 on both sides of the front part of the connecting shaft 40
2 is inserted into a slit hole 43 formed in the partition wall 22 to allow movement.

In such a configuration, when moving the vacuum cleaner main body 10 forward to clean, first, the operation handle 39 is
The operation handle 39 can be slid forward and backward, so the stopper 38 is inserted into the elongated hole 3.
Move forward until it comes into contact with the front edge of 5. This action causes the connecting shaft 40 to rotate the movable nozzle 32 clockwise. That is, the movable nozzle 3
2 directs its outlet side opening end toward the rear lower side of the turbine 27. In this condition, the electric blower 23
When the motor is driven, dust is sucked in through the suction opening 14 and stored in the dust chamber 18, and the suction air purified by the filter 19 flows into the electric blower chamber 24, cools the electric blower 23, and then flows from the movable nozzle 32 to the rear of the turbine 27. At this time, the turbine 27 is rotated counterclockwise and the air is discharged from the exhaust port 26. The rotation of the turbine 27 is transmitted by the timing belt 29, and the rotary brush 15 rotates forward in a down-cut state in the forward direction to scrape up the floor surface 13.

When cleaning by moving the vacuum cleaner main body 10 backwards, the operating handle 39 is pulled rearward, and the operating handle 39 is moved rearward until the stopper 38 comes into contact with the rear edge of the elongated hole 35, and the movable nozzle 32 is moved backward. Rotate counterclockwise. That is, the movable nozzle 3
2 has its outlet side facing toward the front lower side of the turbine 27. When the electric blower 23 is driven in this state, the exhaust air passes through the movable nozzle 32 and hits the front part of the turbine 27, causing the turbine 27 to rotate clockwise. The rotation of the turbine 27 causes the rotary brush 15 to rotate backward in a down-cut state as the rotary brush 15 moves backward.

In this way, the rotation direction of the turbine 27 is down-cut in the direction of movement regardless of whether the cleaner main body 10 is moving forward or backward, so that the thrust generated by the rotation of the turbine 27 improves the running performance of the vacuum cleaner main body 10. is good regardless of whether the vehicle is moving forward or backward.

Further, the rotating brush 15 is rotated by a turbine 27 using exhaust air as a driving source, and does not require a special motor, which reduces power consumption and weight. Furthermore, the turbine 27 is housed in the turbine storage chamber 25 isolated from the suction path and is driven by purified exhaust air, so that it is protected from dust and can operate smoothly for a long period of time.

As described above, in this invention, the turbine rotated by the exhaust air of the electric blower is connected to the rotating brush, so the motor that rotates the rotating brush can be omitted, thereby reducing power consumption. In addition, it protects the turbine from dust and allows it to operate smoothly over a long period of time.Furthermore, the direction of rotation of the turbine can be changed by deflecting the movable nozzle in conjunction with the operating handle. The rotation direction of the rotating brush can be rotated in a down-cut state according to the direction of movement of the vacuum cleaner main body, thereby making it possible to match the direction of the thrust of the rotating brush with the direction of movement of the vacuum cleaner main body. This has the advantage that the running performance of the vacuum cleaner body can be improved, and the direction of rotation of the rotary brush can be automatically changed simply by moving the operating handle back and forth.

[Brief explanation of drawings]

Fig. 1 is a longitudinal side view showing a conventional example, Fig. 2 is a longitudinal side view showing an embodiment of the present invention, Fig. 3 is an enlarged exploded perspective view showing the mounting state of the movable nozzle, and Fig. 4 is FIG. 3 is an enlarged longitudinal sectional side view showing a state in which the operating handle and the movable nozzle are connected. 10...Vacuum cleaner body, 15...Rotating brush, 1
8... Dust collection room, 23... Electric blower, 24... Electric blower room, 25... Turbine storage room, 26...
Exhaust port, 27...Turbine, 29...Transmission means,
32...Movable nozzle, 39...Operation handle.

Claims (1)

[Claims] 1. A vacuum cleaner body having a rotating brush, a dust collection chamber, and an electric blower chamber with a built-in electric blower is provided, a turbine storage chamber in which an exhaust port communicating with outside air is formed is provided in the vacuum cleaner body, and the turbine storage chamber is provided with an exhaust port that communicates with outside air. A turbine connected to the rotary brush via a transmission means is rotatably housed in the chamber, an operating handle is attached to the rear of the vacuum cleaner body so as to be slidable in the front and back direction, and one end is opened on the exhaust side of the electric blower. A movable nozzle whose other end opens facing the turbine is provided on the turbine side, the movable nozzle is rotatably mounted in a distribution direction with respect to the rotation center of the turbine, and the movable nozzle and the operation handle are connected together. A vacuum cleaner characterized by connecting two.