JP3422037B2 - Vacuum cleaner suction tool and vacuum cleaner - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction tool for a vacuum cleaner.

[0002]

2. Description of the Related Art Conventionally, as a suction tool 1 for an electric vacuum cleaner of this type, one described in, for example, JP-A-61-33634 is known. Further, the shape of the dust suction port 2 is generally the shape shown in FIG. That is, the suction port 2 had a substantially rectangular shape, and the left and right opening widths of the center portion 7 were the same. Further, in the case where the rotary brush drive motor 4 is built in, it is generally located on one of the left and right sides from the viewpoint of transmission of the driving force.

[0003]

However, in such a suction tool 1 for an electric vacuum cleaner, the suction tool 1 and the floor must be moved when the operator moves the suction tool 1 on the floor when performing a cleaning operation. There is a suction pressure between the suction tool 1 and the floor surface which is generated by a suction pressure sucked from the vacuum cleaner body between the surface and the surface, and a contact pressure which the mass of the suction tool 1 gives to the floor surface. However, when the opening area of the suction port 2 is even with respect to the centerline in the longitudinal direction of the joint, the suction pressure is evenly generated at the dust suction port 2 and the floor surface during the operation, and the suction pressure is constant, for example, The mass of the ingredient 1 is about 7
If it is 00g, the center part 7 is about 100g by the arm.
Yes, the drive motor interior side 3 has a drive motor 4 of about 250 g, and the drive motor interior side 3 as a whole is about 400 g.
Becomes In addition, the control circuit interior side 5 is about 200 g.
Therefore, since the mass of the drive motor interior side 3 is twice the mass of the control circuit interior side 5, the contact pressure applied by the mass of the suction tool 1 to the floor surface is also controlled by the drive motor interior side 3 to the control circuit interior side 5. The suction tool 1 tends to move toward the interior 3 of the driving motor while curving due to the difference in the contact pressure to the floor surface given by the mass of the suction tool 1 during operation, and the suction tool is located at the target position during operation. It was hindering the operation of 1.

An object of the present invention is to solve the above problems and to provide a small-sized suction tool for an electric vacuum cleaner having good operability.

[0005]

[MEANS FOR SOLVING THE PROBLEMS] An agitator, a drive motor for driving the agitator, and a drive for a suction tool body having a suction port at the bottom and a joint for connecting to the vacuum cleaner side at substantially the rear center. A control board for controlling the motor is incorporated, and an opening area (A) of the suction port on the drive motor side is set to be smaller than an opening area (B) on the control board side with respect to a centerline in the longitudinal direction of the joint. Further, an average opening width obtained by dividing the opening area (A) by the distance from the center line to the opening end of the suction port is defined as the distance from the center line to the opening end of the suction port. It is a suction tool for an electric vacuum cleaner characterized by being set to be smaller than the average opening width obtained by dividing by.

[0006]

According to the present invention, since the opening area of the dust suction port is set in consideration of the mass distribution of the suction tool by the above-described structure, the suction tool can be evenly contacted with the floor surface, and suction can be performed during operation. Since the contact pressure between the tool and the floor surface is even, the straightness of the suction tool during operation can be improved and the operability can be improved.

[0007]

Embodiments of the present invention will be described below with reference to FIGS. 1 and 2.

As shown in the drawing, a suction tool 1 having a suction port 2 at the bottom and a joint for connecting to the vacuum cleaner side at the rear center is provided with a suction port 2, an agitator 9, a drive motor 4, and a control unit as shown in the drawing. The circuit 6 for the interior is installed, and the inner wall 8 of the inlet is changed midway with respect to the center line in the longitudinal direction of the joint so that the dimension of the inlet 2 is set to the relation of a dimension 10 <b dimension 11. Is set so that the opening area A12 of the drive motor interior side 3 is smaller than the opening area B13 of the control circuit side interior side 5. Therefore, there is a relationship that the contact pressure by the mass of the suction tool on the floor surface of the drive motor interior side 3 = the contact pressure by the mass of the suction tool on the floor surface of the control circuit interior side 5.

Generally, since the suction pressure applied per unit area is the same, in the above structure, the drive motor interior side 3
Since the area C15 of the floor surface grounding portion 14 becomes larger than the area D16 of the floor surface grounding portion 14 on the control circuit interior side 5, the contact pressure to the floor surface due to the mass of the suction tool on the drive motor interior side 3 is for control. The contact pressure to the floor surface due to the mass of the suction tool on the circuit interior side 5 becomes equal, and the resistance to the floor surface due to the mass of the suction tool 1 generated during operation of the suction tool 1 becomes uniform throughout the suction tool.
The ground contact pressure of the floor surface grounding portion 14 is even.

As described above, according to the suction tool 1 for the electric vacuum cleaner of the embodiment of the present invention, the ground pressure that the mass of the suction tool 1 gives to the floor surface is the ground surface of the drive motor interior side 3 of the suction tool 1 to the floor surface. The ground pressure applied and the ground pressure applied to the floor surface by the control circuit interior side 5 become uniform, and the floor surface between the drive motor interior side 3 and the control circuit interior side 5 due to the mass of the suction tool 1 during operation of the suction tool 1 Since the resistance of the suction tool is equal, the interior of the drive motor 3 of the suction tool 1 generated between the mass of the suction tool 1 and the floor surface (when the mass balance of the suction tool is not uniform, the mass of the suction tool is large). The contact pressure with the floor surface is also large on the side, and when the suction tool tries to operate, the resistance with the floor surface also increases and the suction tool meanders in the direction in which the mass of the suction tool is large.) It is possible to improve the sex. Further, by adopting the above-described configuration, the size of the drive motor 4 can be maintained as it is to reduce the outer dimension of the suction tool 1, or the b dimension 11 of the suction port 2 of the control circuit interior side 5 can be increased to increase the suction. The opening area of the mouth 2 can be widened to improve the suction performance of large dust.

In the above embodiment, the drive motor is used as the agitator drive source, but other drive means such as an air turbine may be adopted instead of the drive motor. Also, the dust suction pressure of the suction port can be set.

[0012]

As is apparent from the above description of the embodiment, according to the present invention, the positions of the inner wall of the suction port inside the suction port are set separately for the drive motor internal side and the control circuit internal side. Therefore, it is possible to adjust the contact pressure generated by the mass of the suction tool when the suction tool is operated, and it is possible to provide a small-sized and convenient suction tool for an electric vacuum cleaner.

[Brief description of drawings]

FIG. 1 is a plan internal configuration diagram of a suction tool for an electric vacuum cleaner according to an embodiment of the present invention.

FIG. 2 is a back view of the suction tool for the electric vacuum cleaner according to the embodiment of the present invention.

FIG. 3 is a plan internal configuration diagram of a conventional vacuum cleaner suction tool.

[Explanation of symbols]

1 suction tool 2 Suction port 3 Drive motor interior side 4 drive motor 5 Control circuit interior side 6 Control circuit 7 Center section 8 Suction port inner wall 9 Agitator 10 a size 11 b size 12 Opening area A 13 Opening area B 14 Floor ground 15 Area C 16 area D

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) A47L 9/04 A47L 9/02

Claims (2)

(57) [Claims] 1. An agitator, a drive motor for driving the agitator, and a drive motor are controlled by a suction tool body having a suction port at the bottom and a joint for connecting to the vacuum cleaner side at a substantially rear center. the control board is built, the opening area of the suction port of the drive motor side is set smaller than an opening area of the control board side with respect to the longitudinal center line of the joint, further wherein the drive motor side opening area The average opening width obtained by dividing by the distance from the center line to the opening end of the suction opening, the average opening width obtained by dividing the opening area of the control base by the distance from the center line to the opening end of the suction opening. A vacuum cleaner suction tool characterized by being set smaller than 2. A dust collection chamber for collecting dust inside and an electric blower
An electric vacuum cleaner according to claim 1, wherein the electric vacuum cleaner main body includes a vacuum cleaner.
Provided with a connection port connected to communicate with the machine suction tool
Vacuum cleaner.