JP2001061734A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a structure capable of fixing an extension tube to a grip part and detaching the fixing at the time of applying force unnecessarily by providing a knob in the grip part, providing a connecting part to be engaged with a lock part in the extension tube and providing a slope on the abutment surfaces in one or both of the lock part and the connecting part when they are engaged. SOLUTION: When the operating part 201 of the knob 104 is pulled toward a cleaner body in order to disengage the connecting part 105 from the lock part 202 after the cleaner is carried, the lock part 202 by which the upper end surface of the connecting part 105 is pressurized downward is hidden inside the grip part 102, it is disengaged and the extension tube 406 comes off upward. After it comes off, the knob 104 is returned to its original position by energizing. After the cleaner is used, a main body is erected and the connecting part 105 is inserted to the recessed part of the grip part 102 from the upper part. Since the slope is arranged to execute an operation in the opposite direction of a knob energizing direction from the tip side of the lock part 202 to the grip part 102, the knob 104 is easily and temporarily hidden inside the grip part 102 and energized in an engagement direction after that, then engagement is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a main body structure and a joint structure of a vacuum cleaner, and more particularly to a vacuum cleaner having excellent storage, transportability and safety.

[0002]

2. Description of the Related Art A conventional vacuum cleaner has a vacuum cleaner main body provided with an electric blower for sucking dust into a dust collecting chamber, a joint connected to a hose mounting portion of the vacuum cleaner main body, and one end connected to the joint. A hose attached to the portion, a hand portion at the other end of the hose, an extension tube connected to the hand portion and communicating with the hose, and a suction port communicating with the extension tube. In a vacuum cleaner comprising a joint and a handle provided on the joint, wherein the handle is attached to the joint and an extension tube is detachably attached to the handle, various methods of storing the cleaner body are provided. Has been proposed. The most mainstream method is a structure as disclosed in Japanese Patent Application Laid-Open No. 7-39485, in which the entire body is stored in a vertical position without disconnecting, that is, first, the back part of the main body is brought into contact with the floor surface. Then, the extension tube is unfixed and attached to the bottom of the cleaner body in a vertical position with the suction body down and the hand handle up. In this mounting method, the connecting portion provided on the suction body side of the extension pipe is inserted so as to be inserted into a concave portion provided at the tip of the cleaner body. According to this conventional vacuum cleaner, a plurality of parts can be stored in a vertical position without being disassembled, so that they can be used immediately when desired.
Also, the installation property can be improved.

[0003]

However, when the cleaner is in the vertically stored state, the cleaner body cannot be lifted by the extension tube or the hand without the handle.
Therefore, when the connecting portion of the extension pipe is provided with the engaging portion in the concave portion of the cleaner body and engaged therewith, the engagement may be released during the conveyance.

Accordingly, an object of the present invention is to provide a vacuum cleaner which solves the above-mentioned problems and realizes a structure in which an extension tube can be fixed to a handle portion and which is released when an excessive force is applied. To provide.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a cleaner main body provided with an electric blower for sucking dust into a dust collecting chamber, and connected to a hose mounting portion of the cleaner main body. A joint having one end attached to the joint, a proximal end at the other end of the hose, an extension pipe connected to the proximal end and communicating with the hose, and communicating with the extension pipe. The joint portion has a joint,
A cleaner provided on the joint, wherein the handle is attached to the joint, and an extension tube is configured to be detachable from the handle, and the handle includes an operating part and a locking part. When the extension tube is pulled up above the main body of the cleaner, the extension tube has a connecting portion that engages with the locking portion, and the extension tube is attached to the handle portion.
The engaging portion of the handle portion is provided with a slope on a contact surface when one or both of the engaging portion and the connecting portion are engaged so as to be disengaged from the connecting portion of the extension tube. I do.

[0006]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 4 is a perspective view showing the appearance of a vacuum cleaner according to one embodiment of the present invention.

In FIG. 1, reference numeral 401 denotes a cleaner main body in which a control circuit and an electric blower are built, and 402 denotes a cleaner main body 401.
403 is a hose connected at one end to the joint, and 404 is a hand connected to the other end of the hose, and 406 is connected to the hose connected to the hand at the other end of the hose. 405 is the extension pipe 4
A suction port communicating with 06 is shown.

FIG. 5 shows a vertical sectional view of a vacuum cleaner according to an embodiment of the present invention and an air flow.

FIG. 1 shows a state in which the handle 102 is detached from the joint 101. The cleaner body 401 includes a lower case 501 that forms the cleaner body 401, a cover 502 that covers the front surface thereof, a cover shaft 503 that allows the cover 502 to open and close so as to be rotatable forward, and on the cover 502. Suction port 5 provided in
04, a dust-collecting case 505 for accommodating a dust-collecting bag, an airtight holding cover 506 attached to the lid 502 with a member different from the lid 502 to maintain airtightness in the dust-collecting case 505.
And an electric blower chamber 509 formed by a lower case 501 and a motor cover 507 at a rear portion thereof.

The dust collecting case 505 has a dust collecting bag 50.
8. The electric blower room 509 houses an electric blower 510 for collecting dust. This electric blower 510
A protection filter 511 is provided on the intake side of the device, and communicates with the dust collecting case 505. A packing 512 is provided on an upper wall surface of the dust collecting case 505, and the packing 512 and the airtight holding cover 506 are pressed against each other to keep the airtightness of the dust collecting case 505. In addition, a substrate storage section 514 covered with an upper cover 513 is formed above the dust collecting case 505, and a control substrate 515 is stored therein. On the upper cover 513, a handle 516 is disposed so as to be rotatable upward in the cleaner body 401. At the rear of the electric blower 510, a code reel 517 is provided, and a lower case 501 corresponding to the back of the cleaner main body 401 is provided.
An exhaust cover 518 is provided in the upper rear part.
A net 519 is attached to the inner surface side. 524
Are wheels for movement provided on both side surfaces of the cleaner body 401.

FIG. 6 shows a bottom view of only the main part of the lower case of the vacuum cleaner according to one embodiment of the present invention. On the bottom surface of the cleaner body 401, a lower cover 601 is disposed on the lower case 501 so as to be rotatable in the direction of the bottom surface of the cleaner body. The lower case 601 is attached to the lower cover 601 by the stopper knobs 602 on both sides. It is fixed to 501. The lower case 50
Three bumpers 603 are provided around 1 to prevent the cleaner body 401 from being damaged.

FIG. 7 is a bottom view of the main part of the lower case of the vacuum cleaner according to one embodiment of the present invention with the lower cover opened.

When the stop knobs 602 on both sides attached to the lower cover 601 are slid to the rear of the cleaner body 401, the lower cover 601 is opened toward the bottom of the cleaner body. A HEPA filter 701 is accommodated in a lower portion of the electric blower 510 inside the lower case 401, and is held upward by a rib 702 of the lower cover 601.

FIG. 8 shows an HEPA according to an embodiment of the present invention, in which only the main part of the lower case of the vacuum cleaner is opened with the lower cover opened.
The bottom view with the filter and the protection grid removed is shown.

An exhaust port 801 for exhausting air from electric blower 510 is open in lower case 501. A protective grid 8 for holding the HEPA filter 701 from above is provided on the bottom side of the cleaner main body 401 at the exhaust port 801.
02 is provided. Since the protection grid 802 has a sufficient exhaust passage area, the load of the exhaust flow does not become large.

The exhaust port 801 is inclined so that the rear side of the main body rises. On the bottom side of the inclined HEPA filter 701, an exhaust passage D52 for guiding exhaust gas is provided.
0, the air passing through the HEPA filter 701 is efficiently removed, and
7 can flow.

FIG. 9 shows a cross-sectional view and a flow of air of a vacuum cleaner according to one embodiment of the present invention.

Around the electric blower 510, a sound absorbing material 9 is provided.
Reference numeral 01 is attached to the lower case 501 and the upper cover 513. A flow path is formed such that exhaust gas flows from the top surface to the bottom surface of the cleaner main body 401 around the electric blower 510.

Next, the overall air flow will be described with reference to FIGS. The air is blown into the electric blower 510 from the suction port 504 of the cleaner body 401 through the dust collecting case 505. The control board 515 generates heat during the operation of the cleaner main body 401 by this air flow. However, since the cool air flows through the lower portion by disposing it at the upper part of the dust collecting case 505, the control board 515 is caused by the flow. Is cooled efficiently. Since the electric blower 510 is surrounded by the lower case 501 and the motor cover 507, the air sucked into the electric blower 510 is exhausted from an exhaust port formed in the housing of the electric blower 510, and the electric blower 510 and the motor cover The air is discharged toward the exhaust passage A902 through the space formed between the holes 507.
The exhausted air hits the upper cover 513 and the sound absorbing material 901, branches in the direction of the exhaust passage B 903 or the exhaust passage C 904, flows along the upper cover 513 and the motor cover 507 toward the bottom surface of the cleaner body 401, Electric blower 5
At the lower part of 10, air flows through HEPA filter 701. The air that has passed through the HEPA filter 701 is
Dust and carbon brush powder are filtered, become clean air, and flow toward the rear of the main body. Further, the air that has passed through the HEPA filter 701 changes its direction rearward along the lower cover 601 and mostly flows through the cord reel 517.
Flows into The air passes through the heated cord reel 517 and cools, and then is discharged from the exhaust passage D520 through the net 519 and the exhaust cover 518 to the outside of the cleaner body 401. Since the air for cooling the cord reel 517 is clean air as described above, the power cord wound around the cord reel 517 is not stained.

FIG. 10 is a side view of a vacuum cleaner according to an embodiment of the present invention.

Wheel 1001 attached to the cleaner body
Of the vacuum cleaner main body 40 with respect to the center of gravity of the electric blower 510.
1 at the rear with respect to the traveling direction of the cleaner body 4
01 can be set up in a stable state. By obtaining this sense of stability, it is possible to replace the dust collector bag 508 vertically,
The transfer method can be easily changed.

FIG. 1 is an enlarged sectional view of a vertically stored state according to one embodiment of the present invention, and FIG. 2 is an enlarged sectional view of a joint portion and a connecting portion of an extension pipe according to one embodiment of the present invention.

The joint 402 is composed of the joint 101 inserted into the suction port 503 of the cleaner body 401 and the handle 102 provided on the upper part of the joint.
The connecting portion 105 of the extension tube 406 is restrained in the bottom direction toward the handle portion 102, and the operating portion 2
01 and a knob 104 composed of a locking portion 202. The locking portion 202 of the knob 104 engages with the connecting portion 105 attached to the extension tube 406. Knob cover 103
Holds the knob 104 in the vertically stored state in a downward direction opposite to the upward direction through which the extension tube 406 comes out.

The operation of storage and use will be described with reference to FIGS.

When using the vacuum cleaner, the user grips the hand portion 403 and transports the wheel 1001 of the cleaner main body 401 by rolling the wheel 1001 to the place of use in the vertically stored state. When transporting, handle 10
2 prevents the connecting portion 105 of the extension tube 406 from being pulled upward in the bottom direction, so that the cleaner main body 4 remains in the vertically stored state.
01 when the wheel 1001 is rolled and transported.
Since the connecting portion 105 of the extension tube 406 is engaged with the locking portion 202 of the knob 104 simply by grasping and pulling the extension tube 4 with one hand, even if the cleaner body 401 is in the vertically stored state, the extension tube 406 is It can be transported with a light operating force without falling out of the fitting portion. After the transfer, the connecting portion 105 is locked by the locking portion 2.
In order to remove it from 02, the operation unit 201 of the knob 104 is pulled toward the cleaner body 401. Then, the locking portion 202 that has held down the upper end surface of the connecting portion 105 in the downward direction becomes the grip portion 10.
2, the extension tube 406 comes out upward.

After the extension tube 406 comes off, the knob 104 returns to its original position by urging. After using the vacuum cleaner, the cleaner main body 401 is set up, and the connecting portion 105 is inserted into the recess of the handle portion 102 from above. The handle 104 is inclined so as to operate in a direction opposite to the direction in which the knob 104 is urged from the distal end side of the handle 202 to the handle 102, so that the knob 104 is once easily hidden inside the handle 102. Then, the knob 104 is urged in the engaging direction so that the engaging portion 202 suppresses the connecting portion 106 in the downward direction, and the engagement is completed.

Therefore, even when the cleaner main body 401 is in the vertically stored state, the cleaner can be pulled and conveyed with a light operating force without the connecting portion 105 coming out of the locking portion 202. Therefore, in the crouching posture or the crouching posture, the grip portion 10
Thus, it is not necessary to hold the cleaner 2 to lift and transport the vacuum cleaner, so that the cleaner can be transported more easily. Further, since the transport is easy, the time required for moving between the storage location and the cleaning location can be reduced, so that the time required for cleaning can also be reduced.

FIG. 3 is an explanatory view of the operation of the joint portion and the connecting portion of the extension pipe according to one embodiment of the present invention.

Holding the extension tube 406 or the hand portion 404,
When the cleaner body 401 is lifted upward, the connecting portion 105
Applies upward force. When the force exceeds the weight of the cleaner body 401 and becomes a force that lifts the cleaner body 401, the contact surface when one or both of the locking portion 202 and the connecting portion 105 is engaged is inclined. Is provided, the connecting portion 105 pushes out in the direction opposite to the direction in which the knob 104 is urged, and the elongated elongated tube 406 comes out in the direction in which the engaging portion is pulled out. Therefore, the vacuum cleaner main body 401 is not lifted, which is safe. Conversely, the vacuum cleaner body 4 remains in the vertically stored state.
01 when the roller 524 is rolled and conveyed.
5 is engaged with the engaging portion 202 of the knob 104, so that the extension tube 406 can be transported without falling out of the fitting portion. Therefore, the inclination provided on the contact surface when one or both of the engaging portion 202 and the connecting portion 105 are engaged, and the knob 104
The balance of the engagement can be achieved by the urging force.

FIG. 12 shows a vertical storage state of a conventional vacuum cleaner main body.

In the same figure, reference numeral 1201 denotes a cleaner main body in which a control circuit and an electric blower are built, 1202 denotes a joint portion detachably connected to a suction port 1203 of the cleaner main body 1201, and 1204 denotes one end of the joint portion. Hose, 1205 is a proximal portion connected to the other end of the hose, 1206 is an extension tube connected to the proximal portion and communicating with the hose, and 1207 is a suction port communicating with the extension tube 1206. . Further, the joint portion 1202 includes a joint 1208 inserted into the suction port portion 1203, a buckle knob 1209 that locks the cleaner body 1201, and a right and left split that clamps the buckle knob 1209 with the joint 1208. Hose cover 1210, hose cover 12
A handle 1211 is integrally formed with the handle 10. 121
Reference numeral 2 denotes a connecting portion attached to the extension pipe 1206, which can be fitted in a concave portion 1213 provided at the tip of the cleaner body 1201 and stored vertically.

In this method of mounting the cleaner, the connecting portion provided on the suction body side of the extension pipe is inserted so as to be inserted into a concave portion provided at the tip of the cleaner body. When using this vacuum cleaner, hold the handle 1211 of the vacuum cleaner in a stowed posture or a squatting posture in a vertically stored state with one hand, lift the vacuum cleaner, and support the extension tube 1206 with the other hand to transport the vacuum cleaner to the place of use. Must be carried out, giving the user the burden of lifting and transporting the cleaner body.In addition, since both hands are blocked, transport was difficult. I want to lift the machine, but I can't.

[0034]

As described above, according to the present invention,
The handle has a knob having an operating portion and a locking portion, and a connecting portion for engaging with the locking portion is provided on the extension tube, and further, one or both of the locking portion and the connecting portion are engaged. When the cleaner body is lifted in the direction in which the engaging portion is pulled out due to the inclined contact surface at the time, a force greater than the weight of the cleaner body is applied in the direction in which the engaging portion is pulled out. Comes off and the extension tube comes off.

Therefore, the vacuum cleaner body is not lifted, so that it is safe. Conversely, when the transport of the cleaner body is rolled and transported in the vertically stored state, the connecting portion engages with the engagement portion of the knob, so that the extension tube can be transported without falling off.

[Brief description of the drawings]

FIG. 1 is a vertical storage state diagram according to an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of a coupling portion and a connecting portion of an extension pipe according to one embodiment of the present invention.

FIG. 3 is an operation explanatory view of a joint portion and a connecting portion of an extension pipe according to one embodiment of the present invention.

FIG. 4 is a perspective view of the outer appearance of a vacuum cleaner according to one embodiment of the present invention.

FIG. 5 is a vertical sectional view of a vacuum cleaner according to one embodiment of the present invention and a diagram showing an air flow.

FIG. 6 is a bottom view of only the main part of the lower case of the vacuum cleaner according to one embodiment of the present invention.

FIG. 7 is a bottom view of the main part of the lower case of the vacuum cleaner according to one embodiment of the present invention with the lower cover opened.

FIG. 8 is a bottom view of only the main part of the lower case of the vacuum cleaner according to the embodiment of the present invention, with the lower cover opened and the HEPA filter and the protection grid removed.

FIG. 9 is a cross-sectional view of a vacuum cleaner according to an embodiment of the present invention and a diagram illustrating an air flow.

FIG. 10 is a side view of a vacuum cleaner according to one embodiment of the present invention.

FIG. 11 is a transfer state diagram of the vacuum cleaner according to one embodiment of the present invention.

FIG. 12 is a vertical storage state diagram of a conventional vacuum cleaner.

[Explanation of symbols]

101: Joint, 102: Handle, 104: Knob, 10
Reference numeral 5: connecting portion, 201: operating portion, 202: locking portion, 402
... Joint part, 406 ... Extension pipe.

Claims (2)

[Claims] 1. A cleaner main body provided with an electric blower for sucking dust into a dust collecting chamber, a joint connected to a hose mounting portion of the cleaner main body, and a hose having one end attached to the joint. The other end of the hose has a proximal portion, an extension tube connected to the proximal portion and communicating with the hose, and a suction opening communicating with the extension tube. A vacuum provided in the vacuum cleaner, wherein the handle is attached to the joint, and an extension tube is detachably attached to the handle. The handle includes an operating part and a locking part. The extension tube has a knob and has a connecting portion that engages with the locking portion, and furthermore, an inclined contact surface is provided when one or both of the locking portion and the connecting portion are engaged. The vacuum cleaner characterized by the above. 2. The device according to claim 1, wherein when the extension tube is attached to the handle portion, the engagement is released when a force greater than the weight of the cleaner body is applied in a direction in which the engagement portion is pulled out. An electric vacuum cleaner characterized by having an inclination.