JPH07155277A - Vacuum cleaner - Google Patents

Abstract

(57) [Summary] [Purpose] The power cord can be easily adjusted to an appropriate length to improve the operability of the vacuum cleaner. [Structure] An electric blower is provided in the main body case, a hose having a suction port is connected to the main body case, a cord reel 1 for winding the power cord 6 is provided in the main body case, and a power plug of the power cord 6 is connected to a power outlet. The length of the power cord 6 is adjusted in the inserted state, and the cord reel adjusting device including the cord lead brake roller 5 and the cord sending motor 7 for automatically winding the power cord 6 in the unloaded state is provided. .

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner having a power cord reel.

[0002]

2. Description of the Related Art A conventional vacuum cleaner generally has a structure shown in FIG. The configuration shown in FIG. 15 is generally known for the cord reel in the main body case 21. The cord reel 22 is constantly subjected to a force for rotating in the power cord winding direction by the cord winding spring 23, and is normally in a state of being rotatable only in the power cord pulling direction by the cord reel brake mechanism 24. When the power cord winding button 25 is pressed, the brake of the cord reel is released, the cord reel 22 rotates in the direction in which the power cord 26 is wound, and the power cord 6 is stored.

[0003]

In the conventional vacuum cleaner, the power cord take-up button provided on the main body for pulling out the power cord for a long time at the start of cleaning and winding the power cord after the cleaning is completed. Had to press. During cleaning, the power cord itself becomes an obstacle for cleaning because the power cord is too long.
Conversely, the vacuum cleaner was pulled by the power cord because it was too short, making it difficult to operate.

Conventionally, when the power cord is too long, the take-up button is pressed to shorten the power cord, and when the power cord is too short, the power cord is pulled out by hand or the main body is forcibly pulled to lengthen and clean the power cord. Was going on.
In such a method, the operability is poor, the vacuum cleaner user feels uncomfortable, and the power cord may be unreasonably applied to the power cord.

The present invention solves such a problem, and it is not necessary to pull out the cord for a long time at the start of cleaning or press the button to wind the cord at the end of cleaning, which is required in the prior art. Since the cord can be adjusted to an appropriate length, the purpose is to improve the operability of the vacuum cleaner body and to perform cleaning comfortably with it.

[0006]

In order to solve the above-mentioned problems, the present invention uses a plunger for a brake mechanism that stops the power cord of an electric vacuum cleaner from being caught in a cord reel. Further, a motor for feeding the power cord is provided, and a control device for controlling the motor and the plunger is provided. Further, the control switch of the control device is provided on the hand operation unit. Further, a wheel brake device is provided in which the wheels of the main body are freely rotatable in the state of inserting the power plug, and the wheels are braked only in the direction of pulling out the power cord in the state of pulling out the power plug to prevent the main body from moving in the direction of pulling out the power cord.

[0007]

According to the above means for solving the problem, since the length of the power cord can be adjusted by the switch of the hand operation section, it is not necessary to pull out the power cord for a long time at the start of cleaning as in the conventional case, and the power cord can be cleaned during cleaning. Is too long to get in the way, and too short to make the vacuum cleaner difficult to operate. Furthermore, the power cord is automatically stored just by removing the power plug from the outlet, eliminating the need to press a button to wind the power cord at the end of cleaning. As a result, the operability of the vacuum cleaner body is improved, and along with that, cleaning can be performed comfortably.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a side view of a cord reel adjusting device of an electric vacuum cleaner according to an embodiment, and FIG. 2 is a top view thereof.

This apparatus comprises a cord reel 1, a gear 2, a cord feeding roller 3, a cord winding spring 4, a cord reel brake roller 5, a power cord 6, and a cord feeding motor 7.

FIG. 3 is a side view of the wheel brake device,
FIG. 4 is a top view thereof. This device is composed of moving wheels 9 and wheel braking rollers 10 attached to a main body case 8.

FIG. 5 is a side view of the hand operation unit, and FIG. 6 is a top view thereof. The hand operation unit is provided on a hose 11 connected to the main body, and the hand operation unit includes a power control switch 12 and a power cord in / out switch 13.
It is composed of.

FIG. 8 shows the cord reel brake mechanism 1 described above.
5 and the wheel brake mechanism 16 are side views, and FIG. 9 is a front view. Brake roller 17, Plunger 18
The brake roller 17 is attached so that it can rotate only in the direction of the arrow, and the plunger 18
It is designed to work up and down. When the brake roller 17 is in the upper position, the brake by the roller 17 is not applied, and in the lower position, both the cord reel wheels are braked only in one direction.

The operation of the above configuration will be described. When pulling out the power cord to insert the power plug into the outlet, the roller 5 for the cord reel brake is moved upward as shown in FIG. 10, and in this state, the power cord 6 is moved by the cord winding spring 4. Because it receives the force that is pulled in to the main body, the main body tries to move in the direction of pulling out the power cord.

In order to prevent this, as shown in FIG. 11, the wheel brake roller 17 is moved downward and the wheel 9 is rotated.
By applying the brake to the power cord, the power cord can be pulled out without the body moving in the pulling direction. In this case, since the brake applied to the moving wheel 9 is only in the pulling direction, there is no hindrance to the forward movement of the main body.

When the power plug is inserted into an outlet, it is shown in FIG.
As shown in 2, the cord reel brake roller 5
Moves downward, the cord reel 1 is braked, and the power cord 6 does not receive the force of being wound around the main body. At the same time, as shown in FIG. 13, the wheel brake roller 17 moves upward and the wheel 9 becomes rotatable. If the power cord 6 is long with the power plug plugged into the outlet, and the power cord in / out switch 12 is turned on, the cord reel brake roller 5 moves upward, and in this state the power cord The cord 6 is wound around the main body by the cord winding spring 4.
When the power cord in / out switch 12 is returned, the cord reel brake roller 5 moves downward, the cord reel 1 is braked, and the power cord 6 is not wound around the main body side, and the winding is completed.

On the contrary, when the power cord 6 is short, when the power cord in / out switch 12 is put in the out direction, the cord sending motor 7 is rotated, and the gear 2 connected thereto is moved in the direction of the arrow shown in FIG. Rotate to. The rotation of the gear 2 is transmitted to the cord reel 1 and the cord feeding roller 3, and each of them rotates in the direction of the arrow shown in FIG. As a result, the power cord 6 is sent out. When the power cord inlet / outlet switch 12 is returned, the cord feeding motor 7 stops rotating and the feeding is terminated.

When the cleaning is completed and the power plug is removed from the outlet, the cord reel brake roller 5 moves upward as shown in FIGS. 10 and 11, and the power cord 6 is moved by the cord winding spring 4 into the main body. The cord reel 1 receives the force of being wound to the side and is wound up. At this time, the wheel brake roller 17 is moving downward, and by braking the wheel 9, the power cord 6 can be wound up without the main body moving in the cord drawing direction.

[0018]

【The invention's effect】

1. The cord reel adjuster eliminates the need to pull out the power cord for a long time at the beginning of cleaning as in the past, and the power cord is too long to be in the way during cleaning, or too short to make the vacuum cleaner difficult to operate. Things will disappear. Furthermore, the power cord is automatically stored just by removing the power plug from the outlet, eliminating the need to press a button to wind the power cord at the end of cleaning. 2. The length of the power cord can be easily adjusted by providing the operation unit of the cord reel adjusting device at the hand. 3. The wheel brake device allows the power cord to be pulled out easily because the main body does not move when the power plug is connected to the outlet.

[Brief description of drawings]

FIG. 1 is a side view of a cord reel adjusting device of an embodiment of an electric vacuum cleaner according to the present invention.

FIG. 2 is a top view of the cord reel adjusting device of the embodiment of the electric vacuum cleaner of the present invention.

FIG. 3 is a side view of a wheel brake device of an embodiment of the electric vacuum cleaner of the present invention.

FIG. 4 is a top view of a wheel brake device of an embodiment of the electric vacuum cleaner of the present invention.

FIG. 5 is a side view of a hand operation part of an embodiment of the electric vacuum cleaner according to the present invention.

FIG. 6 is a top view of a hand operation part of an embodiment of the electric vacuum cleaner of the present invention.

FIG. 7 is a circuit diagram of a hand operation unit of an embodiment of the electric vacuum cleaner of the present invention.

FIG. 8 is a side view of a brake mechanism of an embodiment of the electric vacuum cleaner according to the present invention.

FIG. 9 is a front view of a brake mechanism of an embodiment of the electric vacuum cleaner of the present invention.

FIG. 10 is a side view showing an operation state of each part of the cord reel adjustment device when the power plug is pulled out in the embodiment of the electric vacuum cleaner of the present invention.

FIG. 11 is a side view showing an operating state of each part of the wheel brake device when the power plug is pulled out in the embodiment of the electric vacuum cleaner of the present invention.

FIG. 12 is a side view showing an operation state of each part of the cord reel adjustment device when the power plug is inserted in the electric vacuum cleaner according to the embodiment of the present invention.

FIG. 13 is a side view showing an operation state of each part of the wheel brake device when the power plug is inserted in the electric vacuum cleaner according to the embodiment of the present invention.

FIG. 14 is an overall view of a conventional vacuum cleaner.

FIG. 15 is a side view of a cord reel of a conventional electric vacuum cleaner.

[Explanation of symbols]

 1 cord reel 2 gear 3 cord feeding roller 4 cord winding spring 5 cord reel brake roller 6 power cord 7 cord feeding motor 8 body case 9 moving wheel 17 wheel brake roller 11 power control switch 12 power cord entry / exit Switch 14 Plunger

Claims (3)

[Claims] 1. A suction port is connected via a connecting means such as a hose to a main body case provided with a negative pressure generating unit, a dust collecting unit, and a cord reel, which is composed of an electric blower including a motor and a fan, and the suction port. In the vacuum cleaner that collects dust by setting the negative pressure state, the length of the power cord is adjusted when the power plug is inserted, and the cord reel adjustment device that automatically winds the power cord when the power plug is pulled out is provided. An electric vacuum cleaner characterized in that. 2. The electric vacuum cleaner according to claim 1, wherein the power cord input / output operation unit of the cord reel adjustment device is provided in a hand operation unit of the electric vacuum cleaner. 3. The electric vacuum cleaner according to claim 1, wherein when the power plug is inserted, the wheels of the main body are rotatable, and when the power plug is unplugged, the wheels are braked only in the direction of pulling out the power cord, and the main body is pulled out in the direction of pulling out the power cord. An electric vacuum cleaner provided with a wheel brake device for preventing the vehicle from moving to the inside.