JPH07116094A - Nozzel member for vacuum cleaner - Google Patents

Abstract

PURPOSE:To reduce the force for moving a nozzle member so as to enhance the manipulatability and the safety by allowing a weight to separate from a rotation detecting lever when a nozzle member body normally stands up, and by allowing the weight to be fitted on the lever only when the nozzle member body is turned over. CONSTITUTION:A rotation detecting lever 18 projected from the bottom surface of a lower casing 3, presses a switch 17 in association with the motion of a nozzle member body 1 so as to turn on a motor 14. Further, a rotary brush 12 is rotated in a direction reverse to the direction of rotation of the motor 14, and since a weight 23 in switching means 20 is located in the lower casing 3, the rotation detecting lever 18 can be easily moved so that the force for moving the nozzle member body 1 becomes less. Further, when the nozzle member body 1 is turned over during operation, the weight 23 is inserted in a recess formed in the rotation detecting lever 18. At this time, the weight 23 impinges upon a weight storage chamber 26 so as to hinder the motion of the rotation detecting lever 18, and accordingly, the motor 14 is turned off so that the rotary brush is not rotated, thereby it is possible to prevent a finger from being caught.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction member of an electric vacuum cleaner having a rotary cleaning member such as a rotary brush driven by an electric motor.

[0002]

2. Description of the Related Art Conventionally, in a suction body having a rotating brush driven by an electric motor, the rotating brush remains rotating even when the suction body is separated from the floor surface or turned upside down. Further, as means for stopping the rotating brush by turning off the electric motor, it is constituted by an operating plate, a mounting plate for mounting the operating plate, and a switch means for turning on / off the electric motor according to the movement of the operating plate. At the position where the electric motor is off,
Attach the weight so that the motion plate is fixed, or
A switch unit is also known.

[0003]

With such a conventional mouthpiece, when the user accidentally puts a finger or the like in the suction mouth, the rotating brush rotates at a high speed, so that the finger or the like is rotated. There was a problem of serious injury. Also, turn off the motor
However, since the weight is provided on the mounting plate or the operating portion such as the switch means, a large amount of force is required to move the suction body, resulting in poor operability.

Further, the one having the operating plate, the mounting plate and the switch means has a large number of parts and a large number of assembling steps, resulting in a high cost.

In view of the above points, the present invention reduces the force for moving the suction member, has better operability, is excellent in handleability and safety, and is lighter in weight and cheaper due to the reduction in the number of parts. The purpose is to provide

[0006]

[Means for Solving the Problems] The above-described object is to: a suction body having a suction port formed on a bottom surface; a rotary brush which is housed in the suction body so as to face the suction port; and to drive the rotary brush. An electric motor is provided, and a rotation detecting lever having an operation plate protruding downward from a bottom is provided in the suction body, and the rotation detecting lever is an attachment portion for attaching the operation plate, and the attachment portion is A weight is provided integrally with a switch means for turning on / off the electric motor according to the movement of the operation plate, and fixes the rotation detection lever at a position where the electric motor is turned off when the mouthpiece body is turned upside down. , When the mouthpiece body is slidably arranged, the weight is detached from the rotation detecting lever when the mouthpiece body is upright, and is fitted into the rotation detecting lever only when the mouthpiece body is turned upside down. The suction body of the vacuum cleaner, characterized in that the can be achieved.

[0007]

According to the present invention, the weight for turning off the electric motor is fitted into the rotation detecting lever only when the weight is detached from the rotation detecting lever when the suction mouth body is upright and the suction mouth body is turned upside down. Since the rotation detection lever is easy to move, therefore, the force to move the suction body is small, the operability is improved and the sliding part of the rotation detection lever, for example, the rotary shaft is less worn, The body lasts longer and the reliability can be improved.

Further, since the mounting portion for mounting the operating plate and the switch means are integrally provided, the number of parts and the number of assembling steps can be reduced, and a lighter weight and less expensive one can be provided.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a suction body of an electric vacuum cleaner according to the present invention will be described with reference to the drawings.

The suction body 1 has an outer casing formed by an upper case 2, a lower case 3 and a suction cover 4, and a bumper for preventing damage to furniture or the like between the upper case 2, the lower case 3 and the suction cover 4. 5, a casing 6 which is rotatable up and down is provided at the rear end portion, and a rotatable suction joint 7 is connected to the tip thereof. A horizontally elongated suction port 8 is formed below the front side of the lower case 3, and a pressure control plate 9 having flexibility and holding suction pressure in the suction port 8 is arranged in the lateral direction in front of the suction port 8. ing. The lower case 3 is provided with wheels 10 on the lower front side and rollers 11 on the lower rear side. The wheels 10 and the rollers 11 form a constant distance between the lower surface of the lower case 3 and the floor surface. There is. Inside the mouthpiece body 1, there are a rotating brush chamber 13 for accommodating the rotating brush 12 and an electric motor 14 as a driving means for the rotating brush 12. A circuit chamber 16 that houses the circuit board 15 is provided on the opposite side of the electric motor 14. A switch 17 for turning on / off the electric motor 14 and a rotation detection lever 18 that protrudes downward from the bottom surface of the lower case 3 and operates in a direction parallel to the movement of the suction port body 1 (in the direction of the arrow) are arranged in the circuit chamber 16. The switch 17 is pressed to turn on the electric motor 14 in accordance with this operation. Also, the electric motor 14 and the switch 17
Are connected via the circuit board 15. The rotation detection lever 18 turns on / off the operation plate 19 and the switch 17.
The switch means 20 is formed integrally with a mounting portion 21 for mounting the operating plate 19. Further, the switch means 20 is formed with a recess 24 into which a spring 22 for biasing the switch 17 to the OFF position and a weight 23 for stopping the movement of the rotation detection lever 18 are inserted. The lower case 3 is provided with an opening 25 for the operation plate 19 to operate, and a weight storage chamber 26 for storing the weight 23 is integrally formed, and a gap between the recess 24 and the weight storage chamber 26 is formed. The size a is smaller than the projection b when the weight 23 is inserted into the recess 24.

An opening 25 is provided on the upper portion of the operating plate 19.
A cover 27 is provided to prevent dust from entering.

Here, FIG. 7 shows a cleaner body (not shown).
1 shows a state in which the hose 28, the extension pipe 29, and the mouthpiece body 1 are connected. The hose 28 is provided with a bending joint 30 at the extension pipe side connection portion. A switch button 31 for operating the electric motor 14 is installed on the bending joint 30.

In the above structure, when the switch button 31 is inserted and the suction port body 1 is brought into contact with the cleaning surface, the electric motor 14 is rotated by the movement of the rotation detection lever 18, and the rotary brush 12 is connected to the electric motor 14. Rotate in the opposite direction. Here, since the weight 23 is provided in the lower case 3, the rotation detection lever 18 is easy to move, and therefore, the force for moving the mouthpiece main body 1 is small and the operability is improved, and
Since the mouthpiece body 1 also lasts a long time, cleaning can be performed comfortably. When the mouthpiece body 1 is lifted to move, the rotation detection lever 18 causes the spring 22 to move the electric motor 14 to the O position.
Since the rotation brush 12 is held in the FF position, the rotation of the rotating brush 12 is stopped, so that the rotation noise during lifting is reduced. When the mouthpiece body 1 is turned over during operation, the weight 23 stored in the weight storage chamber 26 is inserted into the recess 24 formed in the rotation detection lever 18. At this time, since the gap a is provided smaller than the protrusion b, the weight 23 collides with the weight storage chamber 26 and the rotation detection lever 1
In order to prevent the movement of 8, the electric motor 14 remains OFF,
Since the rotating brush 12 does not rotate, there is no risk of fingers or the like being caught during rotation.

Further, the switch means 20 constituting the rotation detecting lever 18 has a mounting portion 21 for mounting the operating plate 19.
Since it is formed integrally with, the number of parts and the number of assembling steps can be reduced, and a lighter and cheaper product can be provided.

[0015]

The present invention has the following effects.

(1) The weight for turning off the electric motor is fitted into the rotation detection lever only when the suction body is erected and the weight separates from the rotation detection lever and the suction body is turned upside down. Since it is provided, the rotation detection lever is easy to move, and therefore the force to move the suction body is small, and operability is good.

(2) The weight for turning off the electric motor is fitted into the rotation detecting lever only when the suction body is erected and the weight separates from the rotation detecting lever and the suction body is turned upside down. Since the rotation detecting lever is provided, the rotation detecting lever is easy to move, and therefore the force for moving the suction body is small, and the sliding portion of the rotation detecting lever, for example, the rotating shaft portion is less worn, and the reliability is improved.

(3) Since the mounting portion for mounting the operating plate and the switch means are integrally provided, the movement of the operating plate is prevented.
It can be surely transmitted to the switch, and the malfunction of the electric motor can be prevented.

(4) Since the mounting portion for mounting the operating plate and the switch means are integrally provided, the number of parts and the number of assembling steps can be reduced, and a lighter weight and less expensive one can be provided.

(5) Since the electric motor is turned on / off according to the movement of the rotation detection lever, the finger or the like is not damaged and the safety is high.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional plan view of a suction body showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG.

FIG. 4 is a sectional view taken along line CC of FIG.

FIG. 5 is a sectional side view of a rotation detection lever in an operating state.

FIG. 6 is a cross-sectional rear view of the rotation detection lever when the suction body is turned inside out.

FIG. 7 is a perspective view of the mouthpiece when in use.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Suction body, 12 ... Rotating brush, 14 ... Electric motor, 18
... rotation detection lever, 19 ... operating plate, 20 ... switch means, 21 ... mounting portion, 23 ... weight.

Claims (1)

[Claims] 1. A suction body comprising: a suction body having a suction port formed on a bottom surface thereof; a rotary brush which faces the suction port and is housed in the suction body; and an electric motor which drives the rotary brush. A rotation detection lever having an operation plate projecting downward from the bottom is provided therein, and the rotation detection lever is an attachment portion for attaching the operation plate, and the attachment portion is the movement plate of the operation plate. A weight unit for fixing the rotation detection lever is slidably arranged at a position where the electric motor is turned off when the suction port body is turned over and provided integrally with a switch unit for turning the electric motor on and off. According to one feature, when the mouthpiece body is upright, the weight is detached from the rotation detection lever, and the rotation detection lever is fitted only when the mouthpiece body is turned upside down. The suction body of the machine.