JPS644766B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum cleaner.
Upright type vacuum cleaners, which have become rapidly popular in recent years, have a main body case that has an electric blower and a dust collection section, a rotating brush section at the tip, and a handle that extends upwards at the rear. . This type is extremely suitable for cleaning floors such as carpets, but it is difficult to use for cleaning narrow spaces between furniture or high places such as on shelves. It is suitable to clean the shelves between furniture by connecting a suction hose to the suction port of a canister-type vacuum cleaner. For this reason, upright-type vacuum cleaners that run on the floor are being developed with a suction port for connecting a suction hose, but upright-type vacuum cleaners have a rotating brush part. Since the main body case is large and large, it is not suitable for moving the main body case around when used as a canister type.

The present invention has been made in view of these points, and an object of the present invention is to provide a vacuum cleaner that is lightweight and has good maneuverability when used as an upright type and as a canister type.

This invention has a main body case which has an electric blower and a dust collection chamber inside and a running wheel is attached to the outside, and has a brush opening on the bottom side which is connected to the floor surface and houses a rotating brush connected to a drive part. A brush case having a chamber and a suction air path connected to the brush chamber is provided, a holding portion for detachably holding the brush case is provided in the main case, and a handle extending rearward and a suction hose are selected. a connection port that is inserted into the brush case and connected to the dust collection chamber, and a ventilation connection that has one end connected to the suction air passage of the brush case and the other end connected to an intermediate portion between the connection port and the dust collection chamber. an air passage switching valve is provided at one end of the air passage and is biased by an elastic member in a direction to close the opening of the air passage when the brush case is removed; An operating body is connected to the switching valve, and the brush case is provided with a protrusion that interferes with the operating body of the main body case. Therefore, it can be used as an upright type that can effectively clean the floor by connecting the main case with the dust collection chamber to the brush case containing the rotating brush, and the main case with the brush case removed can be used as an upright type. You can choose to connect the hose and use it as a canister type, and when used as a canister type, the brush case is separated, making it smaller and lighter. This makes it possible to efficiently clean narrow rooms by promoting maneuverability and turning ability.In addition, when using the handle as an upright type by connecting the handle to the connection port on the main body case, the connection port can be used as an upright type. Since it is closed by the handle, it is possible to prevent leakage. At this time, the protrusion provided on the brush case interferes with the actuating body of the main body case, opens the air passage switching valve, and connects the brush chamber to the brush chamber through the communication path. When used as a canister type with the brush case removed, the suction hose is inserted into the connection port, but the air path can be switched freely by separating the brush case. The valve is configured to close the communication path so that the suction hose can communicate with the dust collection chamber without leakage.

A first embodiment of this invention is shown in FIGS. 1 to 11.
This will be explained based on the diagram. A main body case 1 and a brush case 2 are provided. A plurality of flanged pins 3 serving as holding parts are erected on both sides of the main body case 1.
Hook-shaped notches 4 that are removably supported by these flanged pins 3 are formed on both sides of the brush case 2. Further, the main body case 1 is provided with a pair of left and right running wheels 5 and one running wheel 6 that functions as a turning wheel. Further, the main body case 1 is formed with an electric blower chamber 8 in which an electric blower 7 can be housed and a dust collection chamber 10 in which a dust collection bag 9 is attached, which are in communication with each other.
1 and a ventilation passage 12 that opens on one side are connected to the pipe 1.
3 and connected to the dust collection chamber 10 (see FIGS. 6 and 7). An exhaust hole 14 is formed in the electric blower chamber 8, and an exhaust hole 14 is formed in the electric blower chamber 8.
A lid 16 having a clamp 15 is attached to the edge of the opening.

As shown in FIGS. 9 to 11, a fitting part 19 is provided at one end of the rod-shaped handle 17 and the suction hose 18 to be fitted and held in the connection port 11,
This fitting part 19 has locking protrusions 20 that protrude on both sides.
is formed. An L-shaped locking groove 21 that engages with the locking protrusion 20 is formed on the inner periphery of the connection port 11 .

As shown in FIG. 6, the brush case 2 is formed into a U-shape when viewed from above, and is divided into upper and lower halves with a bumper 22 in between. The front part of this brush case 2 has a rotating brush 2.
A brush chamber 24 for rotatably housing the brush chamber 3 is formed, and a suction opening 25 is formed at the bottom of this brush chamber 24. On one side of the brush case 2, one end is connected to the brush chamber 24 and the other end is connected to the packing 26.
A suction air passage 27 is formed which is sealed and connected to the ventilation passage 12, and a transmission chamber 28 is formed on the other side of the brush case 2. The transmission chamber 28 holds transmission rollers 29 and 30, which are transmission wheels. Further, on one side of the main body case 1, a drive roller 31, which is a drive wheel directly connected to the electric blower 7, is provided. The transmission rollers 29 and 30 are joined to each other, while the transmission roller 30 and the drive roller 31 are connected to the main body case 1.
The brush cases 2 and 3 are arranged at positions where they join together when the brush case 2 is connected. These rollers 2
At least the peripheral surfaces of 9, 30, and 31 are covered with a material having a large frictional coefficient such as rubber.

Then, as shown in FIG.
An air passage switching valve 32 for opening and closing the open end of the air passage 12 is rotatably attached to the suction side end of the air passage 12 while being biased in the closing direction by a spring 33. A lever 3 as an actuating body is rotatably connected to this air passage switching valve 32 and one side of the main body case 1.
4 by a rod 35. A protrusion 36 that interferes with the lever 34 is formed on one side of the brush case 2.

Note that a concave handle 37 is formed on the main body case 1.

In such a configuration, the brush case 2 is held in the main body case 1 by engaging the notch 4 of the brush case 2 with the flanged pin 3 of the main body case 1. At this time, the suction air passage 27 and the ventilation passage 12 are connected while being sealed by the packing 26, and the drive roller 31 and the transmission roller 30 are pressed against each other.
In this way, when the brush case 2 is connected, the connection of the suction air passage 27 and the power transmission can be easily and simultaneously performed. Moreover, when the brush case 2 is attached, the lever 34 is pushed by the protrusion 36 and rotates, and the rod 35
can be pulled up to open the air path switching valve 32. Then, the handle 17 is fitted into the connection port 11, and the handle 7 is prevented from coming off by engagement between the locking protrusion 20 and the locking groove 21. Since the upper end of the handle 7 is not open due to the pipe, the connection port 11
is closed. Then, the electric blower 7 is driven to generate negative pressure and the rotational force is transferred to the transmission roller 3.
0 and 29 to the rotating brush 23, and the handle 17 is operated back and forth for cleaning. Suction opening 2
The suction airflow sucked from 5 is sucked into the dust collection bag 9 via the suction air passage 27 and the ventilation passage 12. That is, it can be used as an upright type vacuum cleaner, which is extremely convenient for cleaning floors.

Furthermore, by removing the flanged pin 3 from the notch 4, the brush case 2 can be easily separated from the main case 1. As a result, the lever 34 is released from the protrusion 36, and the air passage switching valve 32 closes one end of the air passage 12 by the force of the sprig 33. Then, a suction hose 18 is connected to the connection port 11 instead of the handle 17. Then, the main body case 1 is moved while rolling the running wheels 5 and 6 on the floor surface, and is used as a canister type vacuum cleaner. At this time, since the main body case 1 is separated from the brush case 2, the main body case 1 is miniaturized and light in weight, and therefore, it has good maneuverability in a narrow room and is extremely convenient to use.

Next, a second embodiment of the present invention will be explained based on FIG. 12. The same parts as in the previous embodiment are designated by the same reference numerals, and the description thereof will be omitted. A drive wheel 38 serving as a drive unit is provided on one side of the main body case 1 and is directly connected to the electric blower 7 . A transmission pulley 39 is held in the transmission chamber 28 of the brush case 2 with its axis coinciding with the axis of the drive wheel 38 . A belt 40 is stretched between the transmission pulley 39 and one end of the rotating brush 23. The transmission pulley 39 is held slidably while being biased toward the driving wheel 38 by a spring 41, and the clutch 42 is held in place by forming pawls that engage with each other on opposing surfaces of the driving wheel 38 and the transmission pulley 39. It is formed. Further, a clutch operation lever 43 connected to a transmission pulley 39 is provided at the rear end of the transmission chamber 28.
is provided protrudingly.

Therefore, when attaching and detaching the brush case 2 to the main case 1, the brush case 2 is attached to the drive wheel 3.
8, the transmission pulley 39 can be moved in the direction away from the drive wheel 38 using the clutch operation lever 43, and the clutch 42 can be disengaged. can be easily linked and separated. Connection of the power transmission path is also easy.

As described above, this invention includes a main body case which has an electric blower and a dust collection chamber inside and has running wheels attached to the outside, and which is connected to the floor and houses a rotating brush connected to a drive unit. A brush case having a brush chamber opening at the bottom and a suction air passage connected to the brush chamber is provided, a holding part for detachably holding the brush case is provided in the main case, and a handle extending rearward and a suction air passage are provided. A hose is selectively inserted into the connection port connected to the dust collection chamber, one end of which is connected to the suction air path of the brush case, and the other end connected to an intermediate portion between the connection port and the dust collection chamber. forming a ventilation passage in the main body case, and providing at one end of the ventilation passage an air passage switching valve that is biased by an elastic member in a direction to close the opening of the ventilation passage when the brush case is removed; An operating body is connected to the air passage switching valve, and the brush case is provided with a protrusion that interferes with the operating body of the main body case, so that the brush case housing the rotating brush has a dust collection chamber. You can choose between using it as an upright type by connecting the main case to effectively clean the floor, or using it as a canister type by connecting the suction hose to the main case with the brush case removed. When used as a canister type, the brush case is separated, making it smaller and lighter, which promotes running and turning characteristics and efficiently cleans small rooms. In addition, when connecting a handle to the connection port on the main body case and using it as an upright type, the connection port is closed by the handle, which prevents leaks. The protrusion provided on the brush case interferes with the operating body of the main body case to open the air passage switching valve, and the brush chamber and dust collection chamber are communicated via the communication passage. When used as a star type, the suction hose is inserted into the connection port, but by separating the brush case, the air passage switching valve becomes free and closes the communication passage, allowing the suction hose to collect dust without leaks. It has the effect of being able to communicate with the room.

[Brief explanation of drawings]

Figures 1 to 11 show a first embodiment of the present invention, where Figure 1 is a perspective view, Figure 2 is an exploded perspective view, Figure 3 is a side view, and Figure 4 is a brush case. A side view showing one end, Figure 5 is a longitudinal side view, Figure 6 is a side view showing one end.
Figure 7 is a horizontal sectional view, Figure 7 is a vertical rear view, Figure 8 is a partially enlarged vertical rear view showing the mounting structure of the air path switching valve, and Figure 9 is a partial view of the relationship between the connection port and the handle. FIG. 10 is an enlarged perspective view showing the state in which the handle is installed; FIG.
The drawing is an enlarged vertical sectional side view showing the attached state of the suction hose, and FIG. 12 is a horizontal sectional view showing a second embodiment of the present invention. 1...Body case, 2...Brush case, 3...
... Flange pin (holding part), 5-6 ... Traveling wheel, 7
...Electric blower (drive unit), 10...Dust collection chamber, 1
1... Connection port, 12... Ventilation path, 17... Handle, 18... Suction hose, 23... Rotating brush,
24... Brush room, 27... Suction air path, 32...
Air path switching valve, 33... Spring (elastic member),
34...Lever (operating body), 36...Protrusion, 38
...Drive wheel (drive part).

Claims (1)

[Claims] 1. A main body case is provided which has an electric blower and a dust collection chamber inside and a running wheel is attached to the outside, and a brush chamber with an opening at the bottom that houses the rotating brush connected to the floor and connected to the drive part. A brush case having a suction air passage connected to a brush chamber is provided, a holding portion for detachably holding the brush case is provided in the main case, and a handle extending rearward and a suction hose are selectively inserted. and a connection port connected to the dust collection chamber, and a ventilation path whose one end is connected to the suction air path of the brush case and whose other end is connected to an intermediate portion between the connection port and the dust collection chamber. An air passage switching valve formed on the main body case and biased by an elastic member in a direction to close the opening of the ventilation passage when the brush case is removed is provided at one end of the ventilation passage, and the air passage switching valve is actuated. A vacuum cleaner characterized in that the brush case is provided with a protrusion that interferes with the operating body of the main body case.