JPH11276392A - Suction port body of electric vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the height direction dimension of a suction port body and to improve operability and assemblability by providing a connection pipe freely rotatable with respect to a suction port main body and provided with a suction passage communicated to a suction port. SOLUTION: This suction port body is constituted of the suction port main body 101 and a free joint part 118 for being operated so as to bring the bottom surface of the suction port main body 101 into contact with a floor surface at all times for the movement of a hose hand part transmitted through an extension pipe by connecting the suction port main body 101 to the extension pipe and communicating the suction port main body 101 and the extension pipe. The free joint part 118 is constituted of a casing 203 freely rotatably attached to the suction port main body 101 for enabling rotation in a height direction and a suction port joint 104 whose one end is attached to the extension pipe and other end is attached to the casing 203 so as to enable the rotation in a horizontal direction. In such a manner, the direction of the suction port body is changed by the operation of the hose hand part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art A mouthpiece used in a conventional vacuum cleaner has a casing having one end rotatably connected to the rear of the mouthpiece and the other end bent upward in a substantially L-shape.
A connection pipe having a suction joint connected to the casing and rotatably connected in the circumferential direction is provided, and the suction opening is rotated left and right by about 90 ° by a twisting operation of the hand operation unit. .

[0003]

However, in the conventional suction body, the other end of the casing bent in a substantially L-shape is bent upward, and the suction joint is connected to this portion. Therefore, the size of the mouthpiece in the height direction became large, and the mouthpiece could not be placed in a place such as under a bed or under a sofa, resulting in poor operability.

[0004] Further, since a part of the casing bent in a substantially L-shape is formed of a separate member, the assemblability is poor.
Furthermore, no brush was provided on the lower surface of the mouthpiece, and the wooden floor and the like could not be wiped.

Accordingly, an object of the present invention is to maintain the operability that the mouthpiece is rotated by the twisting operation of the hand operation unit while maintaining the operability.
It is an object of the present invention to provide a vacuum cleaner having a reduced size in the height direction of a suction body and improved operability and assemblability.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is characterized by a suction body having a suction port on a lower surface, a suction port rotatable with respect to the suction body, and the suction port. A connection pipe having a suction passage communicating therewith, and a wheel and a brush protruding downward from the suction main body by the movement of the connection pipe below the suction main body.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 17 is a perspective view of the external appearance of a vacuum cleaner according to an embodiment of the present invention. In FIG. 17, reference numeral 1501 denotes a cleaner main body in which a control circuit, an electric blower and the like are incorporated, and 1502 denotes a cleaner main body. Hose connected to suction port, 150
Reference numeral 3 denotes a hose hand that is held by a user and connects a hose to one end thereof; 1504, an extension tube connected to the other end of the hose hand 1503; 1505, a mouthpiece connected to the extension tube 1504; The switch operation unit provided in the hand unit 1503 is shown.

Next, the operation of the electric vacuum cleaner according to the present invention will be described.
By operating the switch operation unit 1506 provided in 3,
The cleaner is controlled via a control circuit built in the cleaner body 1501.

The suction body 1505 includes a suction body 101 having a suction port 116 for sucking dust, and a suction body 101.
Is connected to the extension tube 1504, and the bottom surface of the suction main body 101 always operates so as to contact the floor surface in response to the movement of the hose hand portion 1503 transmitted through the extension tube 1504, and the dust sucked from the suction main body 101. And the universal joint 118 that communicates so that the air flow containing the air is guided to the extension pipe 1504.

The universal joint portion 118 is rotatably connected to the height direction Y of the hose hand portion 1503 and the left and right direction X about the mouthpiece 1505, and is connected to the hose hand portion 155.
The suction body 101 as it is
The mechanism for transmitting the rotation P2 is provided.

In this embodiment, a universal joint 118 is rotatably attached to the suction main body 101, and a casing 203 which is rotatable in the vertical direction Y, and one end of which is an extension pipe 150.
4 is attached to the casing 203 and the other end is attached so as to enable rotation in the left-right direction X with the casing 203.
04.

By doing so, the hose hand portion 15
The direction of the mouthpiece 1505 can be changed by the operation of 03.

That is, by twisting the hose hand portion 1503 by 90 degrees (rotation P1), the suction body 1505
As shown by the dotted line 7, it can be rotated 90 degrees (rotation P2).

In this state, if a normal operation in the front-rear direction is performed, it is possible to clean the gap of the suction main body 101 up to the width in the short direction.

In this state, when the front edge of the suction main body 101 is brought into contact with the wall and the hose hand portion 1503 is moved in the normal front-rear direction, the suction main body 101 moves along the wall surface. Cleaning can be performed efficiently.

Next, the structure of the mouthpiece 1505 will be described with reference to FIG.
This will be described with reference to FIG.

FIG. 1 shows a suction main body 1 according to an embodiment of the present invention.
2, FIG. 2 is a top view of the suction main body 101, FIG. 3 is a front view of the suction main body 101, and FIG.
01 is removed, and FIG. 5 is AA in FIG.
6 is a bottom view of the universal joint portion 118, and FIGS.
9 is a sectional view taken along the line BB in FIG. 1, FIGS. 9A and 9B are bottom and side views of the casing 203, and FIGS. 10A and 10B are sectional and bottom views of the joint cover 105. 11 (a),
1B and 1C are a bottom view and a sectional view of the joint fixing member 501, FIGS. 12 and 13 are EE sectional views in FIG.
4 is a cross-sectional view of the front wheel 106, FIG. 15 is a side view of a state in which the suction body 1505 is hung with the suction joint 104, and FIG.
6 is a sectional view taken along line FF in FIG.

The mouthpiece main body 101 is divided into upper and lower parts at a position at a height substantially at the center thereof, and includes a lower case 102 forming an outer shell and an upper case 201 disposed on the upper part of the lower case 102. Is formed.

A bumper 103 is mounted on the outer periphery of the position where the lower case 102 and the upper case 201 are in contact with each other to maintain airtightness and prevent damage to furniture and the like. This bumper 103 is made of a high sliding resin to which a fluororesin powder and silicone oil are added based on an alloy of hydrogenated styrene butadiene rubber and polypropylene, and is used when the shock absorbing bumper comes into contact with the wall surface by cleaning the wall. High slidability is secured.

In this embodiment, 5% of tetrafluoroethylene and 5% of silicone oil are used as the fluororesin powder.
%, But the fluororesin powder may be adjusted to 2 to 20% and the silicone oil may be adjusted to 2 to 20% depending on the required sliding performance.

Further, perfluoroalkoxy, fluorinated ethylene propylene, fluorinated ethylene propylene ether or the like may be used as the fluororesin powder.

Further, as an additive for obtaining slidability, an inorganic lubricant such as talc, calcium titanate, graphite, molybdenum disulfide or the like, or an organic lubricant such as wax, organic fatty acid metal salt or fatty acid amide is used. It may be added to the material.

Further, in addition to the above-mentioned base materials,
Nylon 12 elastomer, polyurethane elastomer, polyester elastomer, polyolefin elastomer, polystyrene elastomer, soft polyethylene or the like may be used.

It should be noted that the nylon 12 elastomer has slidability even when used alone, and may be used alone without adding any additives.

As described above, since the bumper 103 is formed of a highly slidable material, the bumper 103 is brought into contact with the wall while the shock absorbing bumper 103 is in contact with the wall, such as when cleaning the wall.
The operability when moving 5 can be improved.

Behind the suction body 101, the universal joint 11
8 are provided.

The universal joint portion 118 comprises a substantially cylindrical casing 203, a suction joint 104, a joint cover 105, and a joint fixing member 501.

The casing 203 has a casing flange portion 502 and a casing tube portion 503, and the suction joint 104 has a joint flange portion 504 and a joint tube portion 505.

Further, as shown in FIG.
05 has a substantially U-shaped joint fixing portion 506 and a fixing concave portion 1001 formed therein.

Further, as shown in FIG. 11, the joint fixing member 501 has a joint holding portion 507 and a screw boss receiving portion 1101.
Are formed.

Then, the joint cylinder 505 of the suction joint 104 is inserted into the casing cylinder 503 of the casing 203,
The casing flange portion 502 of the casing 203 and the joint flange portion 504 of the suction joint 104 are connected to the joint cover 105.
The fitting cover 105 is fitted in the direction A of FIG.

Then, the joint fixing member 501 and the screw boss receiving portion 1101 are fixed to the fixing concave portion 10 of the joint cover 105.
01 and screw boss 90 of casing 203
1 and screwed to the casing 203, the casing 203 and the suction joint 104 are fixed in the directions B and C in FIG. 203 is fixed.

With such a configuration, the casing cylinder portion 503 and the joint cylinder portion 505 ensure good rotation, and almost the entire circumference of the casing flange portion 502 and the joint flange portion 504 are fixed to the joint fixing portion 506. And the joint holding portion 507, it is possible to secure high strength.

In addition, since the suction joint 118 can be disassembled by removing the screw 601, it is possible to remove dust even if the flow path is clogged.

Further, the suction joint 104 is connected to the casing 20.
3, the size of the mouthpiece 1505 in the height direction can be reduced, and the bottom of a bed or a sofa can be cleaned.

A pair of rotary cylinders 902 that enable rotation about the horizontal rotary shaft 402 shown in FIG.

Then, the upper case 201 and the lower case 102
Are provided with rotary bearings 701 and 702, respectively.
2 between the rotary bearings 701 and 702,
The casing 203 is mounted on the horizontal rotation shaft 4 with respect to the suction main body 101.
It is connected rotatably around 02.

The horizontal rotating shaft 402 is disposed within the rectangular frame of the mouthpiece and forward of the rear end 102a in the longitudinal direction of the mouthpiece.

As a result, the balance of the suction body is improved, and when the suction body is lifted from the cleaning surface, the suction body does not inadvertently rotate around the horizontal rotation axis 402, and the suction body and the connecting pipe at the time of lifting are lifted. , The operability is improved.

The lower case 102 has a pair of front wheels 10 so as to move the suction body 101 in the front-rear direction and maintain a constant distance between the lower surface of the suction body 101 and the cleaning surface.
6 and a rear wheel 107 are provided.

The front axle 106 has a pivot axis of the suction body 1.
01 is disposed at an angle of about 30 ° with respect to the longitudinal direction.

By doing so, the outer periphery of the front wheel 106 is unevenly worn, regardless of whether the mouthpiece 1505 is operated in the longitudinal direction or the short direction, since the front wheel 106 is constantly rotating. Since it wears evenly without any noise, it is possible to suppress the rumbling sound during operation.

The front wheel 106 comprises a tire portion 1401 and a bearing portion 1402 as shown in FIG. 14, and the tire portion 1401 is formed of a material having high sliding and high wear resistance.

By doing so, it is possible to ensure good running performance on any cleaning surface.
06 can be maintained, and scratches on the cleaning surface can be prevented.

The horizontal rotation shaft 402 is connected to the front wheel 106.
And the lateral movement wheel 108. This is because when the mouthpiece is moved in the lateral direction (longitudinal direction of the mouthpiece), the operating force of the user transmitted to the connecting pipe is distributed to the front wheel 106 and the lateral movement wheel 108. is there. Thereby, the operating force when the suction body is moved in the lateral direction can be reduced, and the wear of the front wheel 106 and the lateral movement wheel 108 can be prevented.

In this embodiment, the bearing 1 is formed by POM.
By molding 402 and press-fitting a tube formed of polytetrafluoroethylene into the bearing 1402,
Although the front wheel 106 is formed, the tire portion 1401 may be formed around the bearing portion 1402 by secondary molding with a tetrafluoroethylene-based material.
The bearing 1402 may be integrally formed of a tetrafluoroethylene-based material.

The lower case 102 has a universal joint 11
8, a lateral movement wheel 108 and a wiping brush 109 which are pivotally supported substantially at right angles to the rear wheel 107.
A pair of wheel bases 110 are rotatably supported.

The wheel base 110 is urged downward by a spring 1601, and when the mouthpiece 1505 is operated in the short direction, that is, in FIG.
When the angle is between 0 °, the rotation restricting projection 801 formed on the wheel base 110 is locked by the rotation restricting rib 904 formed on the casing 203 to restrict the rotation range of the wheel base 110, and The state in which the lateral movement wheel 108 is floating about 1.5 mm on the floor is set as the lowest position, and the wheel base 110 is set so as to be able to protrude and retract.

When the mouthpiece 1505 is operated in the longitudinal direction, that is, when the angle α is about 90 ° in FIG. 5, the rotation regulating projection 801 formed on the wheel base 110 and the casing 203 are formed. The rotation restricting rib 904 is disengaged, and the wheel projection 903 formed on the casing 203 pushes the wheel base 110 downward, and the wheel base 110 protrudes from the lower case lower surface, and the angle α
Is set to be maximum, the rear wheel 107 rises above the floor surface by about 2 mm.

In this manner, when the mouthpiece 1505 is moved in the longitudinal direction, the casing 203 is pivoted almost to the uppermost part, that is, since the angle α becomes maximum, the rear wheel 107 rises above the floor surface. On the other hand, since the laterally moving wheel 108 which is pivotally supported substantially at right angles to the rear wheel 107 comes into contact with the ground, good traveling performance can be obtained even when the laterally moving wheel 108 is moved in the longitudinal direction.

When the mouthpiece 1505 is operated in the short direction, the laterally moving wheel 108 is approximately 1.5 mm from the floor surface.
Since it floats with the above-mentioned interval, it does not become a resistance at the time of operation and can maintain good operability.

A suction port 116 is formed substantially at the center of the lower case 102, and a suction channel 112 having a substantially semicircular cross section is formed on the left and right sides.

Further, a suction opening 115 is provided on a side surface of the lower case 102, and a ventilation groove 114 and a ventilation hole 113 communicating with the suction passage 112 are formed near both sides.

The pressure control plate 111 is provided in front of the suction channel 112.
Is disposed behind the suction flow channel 112.
Are arranged.

The upper case 201 has an intake port 202 formed therein.

An intake passage 401 is formed inside the intake main body 101 to connect the air guide port 113 and the intake port 202.
A shielding rib 1201 is formed in the middle of the intake passage 401.

Further, a shielding plate 1202 is formed opposite to the shielding rib 1201 and integral with the wheel base 110.

Next, a method of collecting dust from the suction body will be described.

On the wooden floor, as shown in FIG. 13, the wiping brushes 109 and 117 come into contact with the wooden floor surface, and
The wooden floor can be wiped by moving 1 in the front-back direction. The wiping brushes 109 and 117 are arranged offset as shown in FIG. In the present embodiment, the wiping brush 117 is located on the front side with respect to the operation direction (the traveling direction) of the mouthpiece,
The wipe 109 is disposed on the rear side. Thereby, when the mouthpiece is moved in the lateral direction, the wipe brush 10
9 and 117 allow a wide swab over the wooden floor.

At this time, the intake flow path 401 is
1 and the shielding plate 1202, as shown in FIG.
The wind hardly flows through 2 and the static pressure in the suction channel 112 increases, so that appropriate dust collection performance can be obtained.

In this embodiment, the wipes 109 and 1 are used.
Reference numeral 17 denotes a suction channel 11 because hair is continuously woven.
2 has the effect of maintaining the static pressure.

In this embodiment, the brushes 109 and 117 are made of a brush material in which soft hairs are continuously woven, but a brushed cloth or a paper towel may be used.

Next, a method of collecting dust on the carpet will be described. On the carpet, the front wheels 106 and the rear wheels 10
7 sinks and the wipe 109 rises to the position shown in FIG.

At this time, the shielding rib 1201 and the shielding plate 120
The relationship of 2 is as shown in FIG.
Is opened, and the upward flow 12
03 flows in, and at the same time, downward flow 1204 from the air guide groove 114.
Flows in.

The upward flow 1203 and the downward flow 1205
The counterclockwise swirling flow in FIG.

Further, the air introduction port 113 and the air introduction groove 114 are arranged at 0 ° to 60
The air flow from the suction opening 115 on the side surface does not obstruct the air flow in the left-right direction in the suction flow path 112, and becomes a spiral swirling swirling flow. It flows into the mouth 116.

As described above, a swirling swirl flow is generated in the suction flow channel 112 on the carpet, and the dust is scraped up, so that the dust collecting performance is improved.

Further, since the intake passage 401 is opened, the static pressure in the suction passage 112 is reduced, and the operating force can be reduced.

Further, since the wiping brush 109 is urged downward by the spring 1601, there is an effect of scraping dust.

Next, the operation when rotating the mouthpiece 1505 will be described.

In FIG. 17, when the user holds the hose hand portion 1503 and twists the extension tube 1504 counterclockwise around the E axis, the casing 203 rotates counterclockwise with respect to the suction joint 104, and The mouth body 101 starts to rotate counterclockwise with respect to the upper part 101.

Then, the hose hand part 1503 is set to about 90 °
5, the casing 203 is substantially upright with respect to the suction main body 101, that is, α is approximately 90 ° in FIG.
1 is substantially parallel to the operation direction.

As described above, since the angle of the suction main body 101 can be controlled by the twist angle of the hose hand portion 1503, the width of the suction body 1505 with respect to the operation direction can be variously changed. It can improve the efficiency when cleaning complicated places such as underneath.

When the mouthpiece body is rotated by 90 °, the casing 203 is almost upright with respect to the mouthpiece body 101, that is, α in FIG.
As described above, the wheel base 110 protrudes from the lower case 102, the rear wheel 107 floats, and the laterally moving wheel 108 comes into contact with the ground, so that good operability can be obtained.

In this state, if the front edge of the suction main body 101 is brought into contact with the wall surface and operated back and forth, the wall can be cleaned efficiently.

In this embodiment, the casing 20
Since the center of rotation of the suction body 3 with respect to the suction body 101 is set at substantially the center in the short direction, when the suction body 1505 is lifted from the cleaning surface, the lower surface of the suction body 101 faces substantially downward as shown in FIG.

In this manner, even if the suction body 1505 is lifted during cleaning, the suction lower surface always faces downward, so that cleaning can be continued by leaving the suction body 1505 as it is, thereby improving the ease of handling.

As described above, according to the present embodiment, the mouthpiece 1
Since the height dimension of 505 can be reduced, it is possible to clean a bed or under a sofa, and the lateral movement wheel 108 protrudes from the lower case as appropriate. The operability of the lateral operation can be improved without hindrance, and the wooden floor can be wiped with a wiping brush, so that the cleaning efficiency can be improved.

[0080]

As described above, according to the present invention, a wheel and a brush are provided below the mouth body so as to protrude downward from the mouth body by the movement of the connecting pipe.
Wooden floors and the like can be wiped, and operability can be improved.

[Brief description of the drawings]

FIG. 1 shows a suction main body 10 according to an embodiment of the present invention.
1 is a bottom view of FIG.

FIG. 2 is a top view of the mouthpiece main body 101. FIG.

FIG. 3 is a front view of the mouthpiece main body 101.

FIG. 4 is a top view in a state where an upper case 201 is removed in FIG. 2;

FIG. 5 is a sectional view taken along line AA in FIG. 1;

FIG. 6 is a bottom view of the universal joint part 118.

FIG. 7 is a sectional view taken along the line BB in FIG. 1;

FIG. 8 is a sectional view taken along the line BB in FIG. 1;

FIG. 9 is a bottom view and a side view of the casing 203.

FIG. 10 is a sectional view and a bottom view of the joint cover 105.

FIG. 11 is a bottom view and a cross-sectional view of the joint fixing member 501.

FIG. 12 is a sectional view taken along the line EE in FIG. 1;

FIG. 13 is a sectional view taken along the line EE in FIG. 1;

14 is a sectional view of the front wheel 106. FIG.

FIG. 15 is a side view of a state where the mouthpiece 1505 is hung with the mouthpiece joint 104 held.

FIG. 16 is a sectional view taken along line FF in FIG. 1;

FIG. 17 is a perspective view of an external appearance of a vacuum cleaner according to an example of an embodiment of the present invention.

[Explanation of symbols]

101: Suction body, 102: Lower case, 103: Bumper, 104: Suction joint, 105: Joint cover, 106:
Front wheel, 107: Rear wheel, 108: Wheel for lateral movement, 10
9,117 ... wiping brush, 110 ... wheel base, 111 ...
Pressure control plate, 201: upper case, 202: intake port, 20
3. Casing, 401: Intake channel.

Claims (5)

[Claims] 1. A suction body having a suction port on a lower surface, and a connecting pipe having a suction passage rotatable with respect to the suction body and communicating with the suction port, A suction body for a vacuum cleaner, wherein a wheel and a brush are provided to protrude downward from the suction main body by the movement of the connection pipe. 2. The device according to claim 1, further comprising a first wheel rotating in a traveling direction of the suction body and a second wheel different from the first wheel, below the suction body. 2. A suction body for an electric vacuum cleaner, wherein a second wheel protrudes downward from the suction main body. 3. The connection pipe according to claim 1, wherein the connection pipe comprises a casing which rotates vertically with respect to the suction main body, and a suction joint which rotates with respect to the casing circumferential direction. The mouthpiece of the vacuum cleaner, wherein the mouthpiece protrudes downwardly of the mouthpiece main body in accordance with the rotation of the mouthpiece. 4. A casing having a suction port on a lower surface, a casing having a suction passage rotatable vertically with respect to the suction body and communicating with the suction port, and rotating in a circumferential direction of the casing. And a wheel base provided with wheels and brushes in contact with the surface to be cleaned, and the wheel base is urged upward to move the wheels into the suction port. The casing has a projection that comes into contact with the wheel base when the casing is turned upward, and the projection comes into contact with the wheel base when the casing is turned upward. A suction body for an electric vacuum cleaner, wherein the wheel disposed on the wheel base is projected from a lower surface of the suction main body against a biasing force of a biasing means. 5. A suction body having a suction port and a first wheel for movement on a lower surface, and a casing having a suction passage rotatable vertically with respect to the suction body and communicating with the suction port. A suction wheel joint provided rotatably in the circumferential direction of the casing, a wheel base including a second wheel and a brush different from the first wheel in the suction body, and the wheel Urging means for urging the base upward and housing the second wheel in the mouthpiece main body, wherein the casing comes into contact with the wheel base when the casing is turned upward. A projection, which projects against the urging force of the urging means when the projection comes into contact with the wheel stand, thereby projecting the second wheel and the brush arranged on the wheel stand from the lower surface of the suction body. A mouthpiece for an electric vacuum cleaner, characterized in that it is made to be made to be.