JPH06254005A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To reduce the operating force, and to improve the useability by dispensing with the forward/backward operation executed by holding a hose for the purpose of a floor nozzle operation. CONSTITUTION:A floor nozzle 32 and an extension tube 23 are connected by a floor nozzle hose 43 having flexibility through an extension tube support, and also, connected electrically to an electric connecting body 28 in the lower end part of the extension tube 23 by a curl cord 44. Also, in the inside of the floor nozzle 22, a rotary brush 29 and a motor being its driving source, and a changeover switch 38 are provided, and a running driving roller driven together with the rotary brush 29 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a general household vacuum cleaner.

[0002]

2. Description of the Related Art Conventionally, as an electric vacuum cleaner having a floor suction tool, the one described in Japanese Patent Laid-Open No. 62-028866 is known, and the operation force is being reduced. This will be described with reference to FIGS. In FIG. 1, 1 is an electric blower inside, a cleaner body with a dust collecting part built therein, 2 is a floor nozzle that constitutes a suction port, and communicates with the cleaner body 1 via an extension pipe 3 and a hose 4. There is. Reference numeral 5 denotes a power cord, which is electrically connected to the cleaner body 1 and the floor nozzle 2 by connecting to a copper wire inside the hose 4.

2 to 3, reference numeral 6 denotes a rotary brush provided under the floor nozzle 2, which is interlocked with a drive source (hereinafter referred to as an electric motor) 7 via a belt 8. Reference numeral 9 is an auxiliary hose that connects the extension tube 3 and the rotary brush chamber 6a, and 10 is an extension tube support that connects the auxiliary hose 9 and the extension tube 3, and a shaft 11
It is rotatably attached to. A moving roller 12 is rotatably attached to the shaft 11. This axis 11
Is the upper nozzle 13 and the lower nozzle 1 forming the floor nozzle 2.
It is worn by 4.

Reference numeral 15 is a changeover switch for changing the rotation direction of the electric motor 7, and its actuator 15a is changed over and operated by a detection device (hereinafter referred to as a lever) 17 which is rotatably attached to the lower nozzle 14 about a shaft 16 as a fulcrum. It

In FIG. 4, 18 is an electric blower provided in the cleaner body 1, and 19 is a main switch of the entire cleaner. Reference numeral 20 is a handle that the user holds to move the floor nozzle 2 forward and backward.

[0006]

The problems of the conventional electric vacuum cleaner described above will be described below.

In this configuration, when the floor nozzle 2 moves in the forward direction with respect to the cleaning surface such as the carpet, the lever 17 moves rearward as shown by the solid line in FIG. 3 due to the contact with the carpet. At this time, as shown in FIG.
Is connected to the electric motor 7 through the front rotation-side terminal 15b so that the rotating brush 6 rotates in the forward direction, so that once it starts moving forward, the state in which the lever 17 has moved to the rear continues and the front of the rotating brush 6 continues. Floor nozzle 2 due to the driving force to
The user does not need to push with too much force.

Next, when the user tries to pull the floor nozzle 2 toward the front, the lever 17 moves forward as shown by the phantom line in FIG. 3, and the changeover switch 15 moves the electric motor 7 through the rear rotation side terminal 15c. , And the rotating brush 6 rotates in the opposite direction. Therefore, the user does not need to pull the floor nozzle 2 with a very strong force. However, when the floor nozzle 2 is moved forward or backward, the user operates the handle 20 back and forth with his / her hand, despite having the changeover switch 15 and the highly durable, large and heavy electric motor 7 capable of changing the rotation direction. It was necessary and had the drawback of becoming tired.

[0009] Therefore, the present invention is intended to solve the problems that the conventional configuration has, and an object thereof is to realize an electric vacuum cleaner having improved operability during cleaning. is there.

[0010]

[Means for Solving the Problems] A first means of the present invention for achieving the above object is to provide a cleaner main body having a built-in electric blower, and a hose connected to an intake port in front of the cleaner main body. It has a tip pipe provided at the other end of the hose, an extension pipe removably connected to the tip pipe, and a floor nozzle connected to the other end of the extension pipe, and an agitator and its drive source in the floor nozzle. And a detection device for determining the rotation direction of the drive source is provided on the bottom surface of the main body of the floor nozzle, and the lower end of the extension pipe and the floor nozzle are connected by an elastic hose.

The second means is that the agitator and its drive source are internally provided in the floor nozzle, and a traveling drive roller driven together with the agitator is provided.

The third means is to provide a traveling roller at the lower end of the extension pipe. The fourth means is configured such that the floor nozzle and the extension pipe are connected by a support body that is slidable in the front-rear direction.

[0013]

The operation of the first and second means is as follows. That is, the floor nozzle is an agitator when moving forward,
Alternatively, the traveling drive roller moves forward, and when moving backward, the elastic hose that connects the lower end of the extension tube and the floor nozzle is pulled back when it is fully extended. There is no need to move it back and forth, improving usability.

Further, since the traveling roller is provided at the lower end of the extension pipe by the third means, not only the forward movement by the agitator of the floor nozzle or the traveling drive roller, but also the front and rear position of the nozzle depending on the intention of the user. The usability can be further improved because the traveling angle can be changed and the advancing angle of the floor nozzle can be changed with the traveling roller as a fulcrum.

According to the fourth means, the connection between the lower end of the extension pipe and the floor nozzle has not only the elastic hose but also the support slidable in the front-rear direction, so that the floor nozzle can be straightened. It is possible to move forward and backward, and it is possible to easily change the advancing angle of the floor nozzle, which further improves usability.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 21 is a cleaner body having an electric blower, a cord reel, and a dust collecting portion (not shown) built therein, and 22 is a floor nozzle constituting a suction port portion, and an extension pipe 2 is provided.
3, and communicates with the cleaner body 21 via the hose 24. A tip pipe 25 having a bent portion 26 is provided on the extension pipe 23 side of the hose 24.

Reference numeral 27 is a power cord, which is connected to a copper wire inside the hose 24 so that the cleaner body 21 and the extension tube 2 can be connected.
3 is electrically coupled to the electrical connection 28 at the lower end.
29 is a rotating brush provided under the floor nozzle 22,
It is interlocked with the electric motor 30 via a belt 31. 32
Is an auxiliary hose that connects the extension pipe 23 and the rotary brush chamber 29a, and 33 is a hose support that supports the auxiliary hose 32. A moving roller 34 is rotatably attached to the shaft 35. The shaft 35 is held by an upper nozzle 36 and a lower nozzle 37 which form the floor nozzle 22. Three
Reference numeral 8 is a changeover switch for switching the rotating direction of the electric motor 30, and its actuator 38a is connected to the lower nozzle 37 by the shaft 3
Switching operation is performed by a lever 40 which is rotatably mounted with 9 as a fulcrum. Reference numeral 41 is an electric blower provided in the cleaner body 21, and 42 is a main switch of the entire cleaner.

Next, the floor nozzle 22 and the extension pipe 23 are provided with a floor nozzle hose 43 having elasticity through an extension pipe support 33.
And is electrically connected by curl cord 4
It is connected to the electrical connector 28 at the lower end of the extension pipe 23 by 4.

Reference numeral 45 denotes an extension tube roller provided at the lower end of the extension tube 23, which supports the extension tube 23.

A floor nozzle support 46 rotatably supported is provided in front of the lower end of the extension pipe 23, and is supported by a bearing 47 provided above the floor nozzle 22 in the front. The support 46 slides in the bearing 47 as the floor nozzle 22 moves back and forth. Reference numeral 48 is a floor nozzle support shaft.

In the second embodiment, as in the first embodiment, the rotary brush 29, the electric motor 30 as its drive source, and the changeover switch 38 are provided inside the floor nozzle 22. It has a traveling drive roller 49 driven together with it.

Next, the operation of this embodiment will be described. In the first embodiment, when the floor nozzle 22 moves in the forward direction with respect to the cleaning surface such as the carpet, the lever 40 moves rearward as shown by the solid line in FIG. At this time, as shown in FIG. 8, the changeover switch 38 is connected to the electric motor 30 via the front rotation side terminal 38b so that the rotary brush 29 rotates in the forward direction, and the floor nozzle hose 43 and the curl cord 44 both expand and contract. Therefore, the floor nozzle 22 is moved forward by the forward propulsive force of the rotating brush 29 or the traveling drive roller 49. Then, once it starts to move forward, the state in which the lever 40 has moved to the rear continues to be maintained, and the user does not need to push the floor nozzle 22.
At this time, the dust sucked from the cleaning surface is sent to the extension pipe 23 via the rotary brush chamber 29a, the auxiliary hose 32, and the floor nozzle hose 43. The floor nozzle 22 is shown in FIG.
FIG.

Next, when the user tries to pull the floor nozzle 22 toward the front or when the floor nozzle hose 43 is fully extended, the lever 40 moves to the front as shown by the phantom line in FIG. 38 is connected to the electric motor 30 via the rear rotation side terminal 38c, and the rotating brush 29 or the traveling drive roller 49 rotates in the reverse direction and moves backward. Therefore, the user does not need to have any operating force when moving forward or backward, and only needs to grip the tip pipe 25 and does not need to move his or her hand back and forth. In this way, the power of the user is not required at the time of cleaning, and the usability is greatly improved.

An extension tube roller 45 is provided at the lower end of the extension tube 23 to support the extension tube 23 and change the front-back position of the floor nozzle 22 according to the intention of the user. Further, the advancing angle of the floor nozzle 22 can be changed with this portion as a fulcrum.

Further, a floor nozzle support 46 rotatably supported is provided in front of the lower end of the extension pipe 23, and a support 47 is supported in the bearing 47 as the floor nozzle 22 moves back and forth. By sliding 46, the floor nozzle 22 can move straight forward and backward, and the angle at which the floor nozzle 22 advances can be easily changed, further improving the usability.

[0027]

As described above, according to the first and second means of the present invention, when the user cleans the floor nozzle hose, since the floor nozzle hose has elasticity, the rotating brush or the traveling drive roller is used. The floor nozzle is automatically moved by the propulsive force to the front and the rear, and the waste is sent to the extension pipe. Therefore, not only does it require no operating force, but it suffices to hold the tip pipe without moving the hand back and forth.
In this way, the force of the user is not required during cleaning, and the usability is greatly improved.

Next, according to the third means, since the extension pipe roller is provided at the lower end of the extension pipe, the extension pipe can be supported, and the front-back position of the floor nozzle can be changed according to the intention of the user. In addition to that, it is possible to easily change the advancing angle of the floor nozzle.

According to the fourth means, the floor nozzle and the extension pipe are slidably connected by the support so that the floor nozzle can move straight forward and backward, and the angle at which the floor nozzle advances. Can be changed more easily, and the usability is further improved.

[Brief description of drawings]

FIG. 1 is an external view of a conventional vacuum cleaner.

FIG. 2 is an exploded plan view of the same-bed nozzle section.

FIG. 3 is a sectional view of the same-bed nozzle section.

[Figure 4] Circuit diagram

FIG. 5 is an external view of an electric vacuum cleaner showing an embodiment of the present invention.

FIG. 6 is an exploded plan view of the nozzle on the same floor.

FIG. 7 is a sectional view of the nozzle on the same floor.

[Figure 8] Circuit diagram

FIG. 9 is a plan view of a floor nozzle portion of an electric vacuum cleaner showing a second embodiment of the present invention.

FIG. 10 is a sectional view of the nozzle on the same floor.

FIG. 11 is an operation diagram of the same floor nozzle.

[Explanation of symbols]

 22 Floor Nozzle 23 Extension Tube 29 Rotating Brush 38 Changeover Switch 40 Lever 43 Floor Nozzle Hose 45 Extension Tube Roller 46 Floor Nozzle Support 47 Bearing 49 Travel Drive Roller

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masafumi Okamoto 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (4)

[Claims] 1. A cleaner body having a built-in electric blower, a hose connected to an intake port in front of the cleaner body, a tip pipe provided at the other end of the hose, and a detachable connection to the tip pipe. Has an extension pipe and a floor nozzle connected to the other end of the extension pipe, an agitator and its drive source are internally provided in the floor nozzle, and the rotation direction of the drive source is determined on the bottom surface of the main body of the floor nozzle. An electric vacuum cleaner comprising a detector and a lower end of the extension pipe and a floor nozzle connected by a stretchable hose. 2. The electric vacuum cleaner according to claim 1, wherein an agitator and a drive source for the agitator are provided inside the floor nozzle, and a traveling drive roller driven together with the agitator is provided. 3. The vacuum cleaner according to claim 1, wherein a traveling roller is provided at a lower end of the extension pipe. 4. The vacuum cleaner according to claim 1, wherein the floor nozzle and the extension pipe are connected by a support body that is slidable in the front-rear direction.