JPH04303407A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To cool a cord reel with air sucked into a dust collecting chamber through a cord drawing-out port and a receiving chamber by disposing an air pressure varying valve on a partition wall defining a dust collecting chamber and cord reel receiving chamber to open the varying valve when the degree of vacuum in the dust collecting chamber is raised. CONSTITUTION:A dust collecting chamber 2 is formed on the front part of a cleaner body 1, on one side of the rear part a fan chamber 4 for a receiving motor fan 3 and on the other side of the rear part a cord reel receiving chamber 6 for a cord reel 5 are formed respectively. A filter 7 is attached to a partition wall 8 defining the dust collecting chamber 2 and fan chamber 4. An air pressure varying valve 11 is provided in a partition wall 12 defining the dust collecting chamber 2 and cord reel receiving chamber 6. When the motor fan 3 is rotated at high speed by the clogging of a suction hose or the like to raise the degree of vacuum in the dust collecting chamber 2, the air pressure varying valve 11 is opened to suck the atmospheric air from a cord drawing-out port through the receiving chamber 6 into the dust collecting chamber 2. The cord reel 5 is cooled by the atmospheric air to improve the cooling efficiency.

Description

[Detailed description of the invention]

0001

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

0002

[Prior Art] Generally, vacuum cleaners have a built-in cord reel, but in recent years, in order to improve the suction power, higher power has progressed, and as power consumption increases, the cord reel becomes hot and the cord There is a risk of thermal damage. Therefore, as shown in Japanese Patent Application Laid-Open No. 62-299228, ventilation holes are formed in the partition wall that separates the blower room and the cord reel storage chamber, and a part of the exhaust air from the electric blower is applied to the cord reel to blow the cord reel. A cooling system was proposed.

[0003] However, in a vacuum cleaner, when the suction hose is clogged, the electric blower operates at high speed, and the cord reel generates more heat than usual, but the electric blower exhausts hot air. Therefore, the cord reel could not be sufficiently cooled, and there was a risk that the cord would be damaged by heat.

[0004] Furthermore, when in use, the cord must be pulled out from the main body, but since the plug is housed in the lower part of the main body, it is difficult to pull out the cord, resulting in poor workability.

Furthermore, when pulling out the cord from the cord reel, there have been cases where the cord is pulled out too much and the connection between the cord and the cord reel is broken.

[0006]

SUMMARY OF THE INVENTION A first problem to be solved by the present invention is to provide a vacuum cleaner that can improve the cooling efficiency of the cord reel.

[0007] A second problem to be solved by the present invention is to provide a vacuum cleaner that can improve the workability of pulling out the cord.

A third problem to be solved by the present invention is to provide a vacuum cleaner that can prevent the cord from being pulled out too much.

[0009]

[Means for Solving the Problems] In order to solve the first problem, the present invention provides a main body having a dust collection chamber, a blower chamber, and a cord reel storage chamber; an electric blower housed in the blower chamber; The vacuum cleaner is equipped with a cord reel stored in a cord reel storage chamber, characterized in that a pressure fluctuation valve is disposed on a partition wall that partitions the dust collection chamber and the cord reel storage chamber.

[0010]Furthermore, the present invention includes forming a ventilation hole in the partition wall that partitions the blower chamber and the cord reel storage chamber, and providing a closing member for freely opening and closing the ventilation hole. It is characterized by being linked to a pressure varying valve.

Further, the present invention includes a main body having a dust collection chamber, a blower chamber, and a cord reel storage chamber, an electric blower stored in the blower chamber, and a cord reel stored in the cord reel storage chamber. In a vacuum cleaner,
The present invention is characterized in that heat exchange radiating fins are disposed on the partition wall that partitions the dust collection chamber and the cord reel storage chamber.

In order to solve the second problem, the present invention also provides a main body having a dust collection chamber, a blower chamber, and a cord reel storage chamber, an electric blower housed in the blower chamber, and a cord reel storage chamber. The vacuum cleaner is equipped with a cord reel that is housed in the vacuum cleaner, and is characterized in that the vacuum cleaner is provided with a cord pulling device that pulls out the tip of the cord to the outside of the main body by an operation from outside the main body.

Furthermore, in order to solve the third problem, the present invention provides a main body having a dust collection chamber, a blower chamber, and a cord reel storage chamber, an electric blower housed in the blower chamber, and a cord reel storage chamber. A vacuum cleaner equipped with a cord reel housed in the cord reel is provided with a detection means for detecting the amount of cord wrapped around the cord reel, and an alarm generation means for generating an alarm based on the output of the detection means. It is characterized by

[0014]

[Function] With the structure of claim 1, when the electric blower is in a high speed state and the degree of vacuum in the dust collection chamber increases, such as when the suction hose is clogged, the dust collection chamber and cord reel storage chamber The pressure difference causes the pressure fluctuation valve to open, drawing air from the cord outlet into the dust collection chamber through the cord reel storage chamber, and cooling the cord reel with outside air.

According to the second aspect of the present invention, under normal conditions, the exhaust air from the electric blower is blown into the cord reel storage chamber through the communication hole to cool the cord reel. When the vacuum level in the dust collection chamber increases due to the electric blower running at high speed, such as when the suction hose is clogged, the pressure variation valve opens due to the pressure difference between the dust collection chamber and the cord reel storage chamber.
External air is sucked into the dust collection chamber through the cord reel storage chamber,
Cool the cord reel with outside air.

[0016] With the structure of claim 3, the heat in the cord reel storage chamber due to the heat generated by the cord reel is radiated to the dust collection chamber by the heat radiation fins, thereby maintaining the cord reel storage chamber at a low temperature and keeping the cord reel in a low temperature state. maintain it.

According to the fourth aspect of the present invention, the tip end of the cord is pulled out to the outside of the main body by operating the cord pulling device.

According to the fifth aspect of the present invention, when the cord reel is pulled out and the amount of cord wrapped around the cord reel decreases, the alarm generation means issues an alarm based on the output from the detection means to alert the user.

[0019]

[Embodiment] A first embodiment of the present invention will be described in detail below with reference to FIG.

Reference numeral 1 denotes a vacuum cleaner body, which forms a dust collection chamber 2 at the front, and at the rear, a blower chamber 4 for storing an electric blower 3 on one side and a cord for storing a cord reel 5 on the other side. A reel storage chamber 6 is formed. Reference numeral 7 denotes a filter attached to a partition wall 8 that partitions the dust collection chamber 2 and the blower chamber 4, and filters the dust sucked into the dust collection chamber 2 from the air from a suction hose (not shown) by the electric blower 3. The air is separated from the exhaust port 10 to the main body 1 through a dust removal filter 9 disposed downstream of the blower chamber 4 and the electric blower 3.
It is designed to be exhausted to the outside.

Reference numeral 11 denotes a pressure varying valve provided on a partition wall 12 that partitions the dust collection chamber 2 and the cord reel storage chamber 6, and is used to prevent the electric blower 3 from operating at high speed when the suction hose becomes clogged. When the degree of vacuum in the dust collection chamber 2 rises above the normal state, the pressure fluctuation valve 11 opens and outside air is sucked into the dust collection chamber 2 from a cord outlet (not shown) through the cord reel storage chamber 6. ing.

When the electric blower 3 is driven, air and dust are sucked into the dust collection chamber 2 from the suction hose, and the dust is stored in a dust collection bag that is detachably attached to the dust collection chamber 2. , is exhausted from the exhaust port 10.

When the vacuum level in the dust collection chamber 2 increases due to the electric blower 3 operating at high speed, such as when the suction hose is clogged, the air pressure difference between the dust collection chamber 2 and the cord reel storage chamber 6 causes The pressure fluctuation valve 11 opens, and outside air is sucked into the dust collection chamber 2 from the cord outlet through the cord reel storage chamber 6, and the cord reel 5 is cooled by the outside air. Since the cord reel 5 is cooled by outside air, the cooling efficiency can be improved compared to the conventional method in which the electric blower 3 is cooled and the cord reel 5 is cooled by the hot air exhaust.

A second embodiment of the present invention will be explained based on FIGS. 2 and 3. Note that parts that are the same as those in the first embodiment are given the same reference numerals, and explanations thereof will be omitted.

Reference numeral 13 denotes a shutter body integrally formed with the valve body 14 of the pressure fluctuation valve 11, which is a partition wall 1 that partitions the blower chamber 4 and the cord reel storage chamber 6 when the pressure fluctuation valve 10 is closed.
The communication hole 16 formed in 5 is opened, and the communication hole 16 is closed when the pressure fluctuation valve 10 is opened.

Therefore, under normal conditions, the exhaust air from the electric blower 3 is blown into the cord reel storage chamber 6 through the communication hole 16 to cool the cord reel 5. In this normal state, the power consumption is relatively low and the cord reel 5 generates little heat, so the cord reel 5 can be efficiently cooled by the exhaust air from the electric blower 3 (see FIG. 2).

[0027] Furthermore, when the electric blower 3 is in a high-speed state and the degree of vacuum in the dust collection chamber 2 increases, such as when the suction hose is clogged, the dust collection chamber 2 and the cord reel storage chamber 6, the pressure fluctuation valve 11
is opened, outside air is sucked into the dust collection chamber 2 from the cord outlet through the cord reel storage chamber 6, and the cord reel 5 is cooled by the outside air. At this time, since the shutter body 13 closes the communication hole 16 in conjunction with the opening of the pressure varying valve 11, the cord reel 5 is cooled only by outside air that is lower temperature than the exhaust air of the electric blower 3, and the cord reel 5 is Cooling efficiency can be improved (see FIG. 3).

A third embodiment of the present invention will be explained based on FIG. 4.

Reference numeral 17 denotes a heat-exchanging heat radiation fin provided on the partition wall 12 that partitions the dust collection chamber 2 and the cord reel storage chamber 6, and allows the heat in the cord reel storage chamber 6 to pass through the dust collection chamber 2. The cord reel storage chamber 6 is cooled by dissipating heat into the air.

The heat in the cord reel storage chamber 6 due to the heat generated by the cord reel 5 is radiated to the dust collection chamber 2 by the heat radiation fins 17, maintaining the inside of the cord reel storage chamber 6 at a low temperature and cooling the cord reel 5. do.

A fourth embodiment of the present invention will be explained based on FIGS. 5 to 11. Incidentally, the same parts as in the above embodiment are given the same reference numerals and the explanation thereof will be omitted.

Reference numeral 18 denotes a cord winding device disposed above the rear portion of the main body 1, which includes an operating piece 20 swingably supported on a base 19, and a brake roller 21 supported at the tip of the operating piece 20. A spring 23 biases the operating piece 20 in the direction of contacting the outer periphery of the winding drum 22 of the cord reel 5, and an external operation causes the operating piece 20 to swing against the biasing force of the spring 23, causing the brake roller 21 to An operation switch 24 is provided to separate the reel 5 from the outer periphery of the winding drum 22.

In the cord reel 5, when the rear side of the operation switch 24 is pressed from above the main body 1, the operation piece 20 swings against the biasing force of the spring 23, and the brake roller 21 moves against the winding drum. 22, the winding drum 22 is rotated by a spring (not shown) to wind up the cord 25, and when the operation switch 24 is pressed, the operation piece 20 is swung by the biasing force of the spring 23, and the brake roller 21 is brought into contact with the outer periphery of the winding drum 22 to prevent rotation of the winding drum 22 and to prevent the cord 25 from being wound up. Also, code 25
When the main body 1 is pulled outward, the brake roller 21 rotates together with the winding drum 22, and the cord 25 is pulled out.

Reference numeral 27 denotes a cord pulling device for pulling out the tip of the cord 25 to the outside of the main body 1, which includes an operating piece 29 that is swingably supported on a base 28, and is fixed to the end of the operating piece 29.
An arm 31 having a forked portion 30 on which the plug 26 at the tip of the cord 25 is hooked at its free end, and a spring that biases the operating piece 29 in a direction in which the forked portion 30 of the arm 31 is accommodated in the main body 1. 32, and the operation piece 29 is operated by operating the front side of the operation switch 24 of the cord winding device 18.

When pulling out the cord 25, when the front side of the operation switch 24 is pressed from above the main body 1, the operation piece 29 swings against the biasing force of the spring 32, and the arm 31 rotates. The fork 30 connects the plug 26 to the main body 1.
Pull outward. Since the plug 26 is pulled out to the outside of the main body 1, the user can grasp the plug 26 and easily pull out the cord 25.

Further, the cord winding device 18 and the cord pulling device 27 can be selectively operated by using the operation switch 24, which simplifies the configuration and
The installation space can be reduced.

33 is a wheel 3 disposed at the rear of the main body 1.
A plurality of exhaust holes 35 are formed in the axle that rotatably supports the electric blower 5 , and a part of the exhaust gas from the electric blower 5 is exhausted from the exhaust holes 35 via the axle 33 . 36 is a vane formed radially on the back surface of the wheel 34, which receives the exhaust air from the exhaust hole 35 and applies a force to rotate the wheel 34. Therefore, when the electric blower 5 is driven, a part of the exhaust air flows through the exhaust hole 35 to the wheels 3.
4, and the vanes 36 try to rotate the wheels 34 by receiving this exhaust gas, so that the main body 1 can be easily moved in conjunction with the operation of a suction hose (not shown) during the cleaning operation. . Reference numeral 37 denotes a through hole formed in the wheel 34, which allows the exhaust gas discharged from the exhaust hole 35 toward the wheel 34 to escape to the outside, and smoothes the exhaust flow from the exhaust hole 35 to act in the direction of rotating the wheel 34. increase power,
The movability of the main body 1 during cleaning operation is improved.

In this embodiment, the cord winding device 18 and the cord pulling device 27 are operated by using the operating switch 24. However, the cord winding device 18 and the cord pulling device 27 each have an operating switch. may be provided. With this configuration, the cord winding device 18 and the cord pulling device 27
can be operated reliably without making any mistakes.

A fifth embodiment of the present invention will be described below with reference to FIGS. 12 and 13. Incidentally, the same parts as in the above embodiment are given the same reference numerals and the explanation thereof will be omitted.

38 is the winding drum 2 of the cord reel 5.
2 is a movable part formed in the winding drum 22 and is always urged outward by a spring 39. It forms an operating piece 41 that closes the microswitch 40 that is opened. The movable part 38 is connected to the cord 2 as shown in FIG.
5 is wound up on the winding drum 22, the cord 25
The operating piece 41 is pressed by the micro switch 4.
0 is in an open state, and when the cord 25 is pulled out from the main body 1 and the cord 25 wound around the winding drum 22 runs out, as shown in FIG. Due to the force, the operating piece 41 moves outward and the micro switch 4
Close 0.

Reference numeral 42 denotes a buzzer serving as an alarm generating means disposed on the upper part of the main body 1, which generates an alarm when the microswitch 40 is closed to notify the user that the amount of cord wound on the cord reel 5 is small. This eliminates the problem of the cord 25 being pulled out too much and the connection between the cord 25 and the cord reel 5 breaking.

Reference numeral 43 denotes a cover having a through hole 44 with a diameter larger than the outer diameter of the cord 25, and the plug 26 at the tip of the cord 25.
It is designed to cover the plug storage section 4 at the bottom of the main body 1.
5, so that it can be inserted and removed freely. and,
When the cord 25 is pulled out from the main body 1, the cover 43 is pulled out together with the cord 25, and when the cord 25 is to be wound up with the cord reel 5, the cover 43
The plug 26 does not move due to friction with the floor surface, and the plug 26
3 (see Figure 14), and the main body 1 remains in that state.
drawn inside. Therefore, since the plug 26 does not rub against the floor surface, the floor surface will not be damaged.

[0043]

As described above, according to the structure of claim 1 of the present invention, the cord reel can be cooled by using outside air that is lower temperature than the exhaust air of the electric blower with a simple structure, and the cooling efficiency can be improved. There are effects such as being able to improve performance.

Furthermore, according to the structure of claim 2 of the present invention,
Normally, the electric blower exhausts air, but when the electric blower rotates at high speed, such as when the suction hose is clogged, the cord reel can be cooled by outside air, improving cooling efficiency. play.

According to the third aspect of the present invention, the air inside the cord reel storage chamber can be efficiently cooled by the radiation fins, and the cooling efficiency of the cord reel can be improved.

According to the structure of claim 4 of the present invention, the tip end of the cord can be easily pulled out from the main body, and the usability can be improved.

According to the structure of claim 5 of the present invention, it is possible to confirm whether the cord is pulled out too much by the alarm from the alarm generating means, and it is possible to prevent cord breakage due to the cord being pulled out too much. play.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a sectional view showing the normal state of the second embodiment.

FIG. 3 is a sectional view showing a high-speed operation state of the electric blower according to the second embodiment.

FIG. 4 is a sectional view of the third embodiment.

FIG. 5 is a sectional view of a main part of the fourth embodiment.

FIG. 6 is a sectional view of a main part of the fourth embodiment.

FIG. 7 is a sectional view of a main part of the fourth embodiment.

FIG. 8 is a sectional view of a main part of the fourth embodiment.

FIG. 9 is a top view of the fourth embodiment.

FIG. 10 is an enlarged sectional view of a main part of the fourth embodiment.

FIG. 11 is a plan view of the wheel of the fourth embodiment.

FIG. 12 is a sectional view of the fifth embodiment.

FIG. 13 is a sectional view of the fifth embodiment.

FIG. 14 is an explanatory diagram of the operation of the fifth embodiment.

[Explanation of symbols]

1 Main body 2 Dust collection room 3 Electric blower 4 Blower room 5 Code reel 6 Cord reel storage room 11 Pressure varying valve 12 Partition wall 13 Shutter body 15 Partition wall 16 Communication hole 17 Heat radiation fin 25 Code 27 Cord extraction device 38 Movable parts 40 Micro switch 42 Buzzer

Claims (5)

[Claims] 1. A vacuum cleaner comprising: a main body having a dust collection chamber, a blower chamber, and a cord reel storage chamber; an electric blower stored in the blower chamber; and a cord reel stored in the cord reel storage chamber. A vacuum cleaner according to the invention, characterized in that a pressure fluctuation valve is disposed on a partition wall that partitions the dust collection chamber and the cord reel storage chamber. 2. A ventilation hole is formed in a partition wall that partitions the blower chamber and the cord reel storage chamber, a closing member is provided to freely open and close the ventilation hole, and the closing member is used as a pressure fluctuation valve. The vacuum cleaner according to claim 1, characterized in that the vacuum cleaner is interlocked. 3. A vacuum cleaner comprising: a main body having a dust collection chamber, a blower chamber, and a cord reel storage chamber; an electric blower stored in the blower chamber; and a cord reel stored in the cord reel storage chamber. A vacuum cleaner according to the invention, characterized in that a heat exchange radiating fin is disposed on a partition wall that partitions the dust collection chamber and the cord reel storage chamber. 4. A vacuum cleaner comprising: a main body having a dust collection chamber, a blower chamber, and a cord reel storage chamber; an electric blower stored in the blower chamber; and a cord reel stored in the cord reel storage chamber. A vacuum cleaner characterized in that it is provided with a cord pulling device that pulls out the tip of the cord to the outside of the main body by an operation from outside the main body. 5. A vacuum cleaner comprising: a main body having a dust collection chamber, a blower chamber, and a cord reel storage chamber; an electric blower stored in the blower chamber; and a cord reel stored in the cord reel storage chamber. A vacuum cleaner according to the present invention, further comprising a detection means for detecting the amount of cord wrapped around the cord reel, and an alarm generation means for generating an alarm based on the output of the detection means.