JP2000079080A - Suction head for vacuum cleaner, and vacuum cleaner having same suction head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction head for a vacuum cleaner with which a narrow space between pieces of furniture or a corner of a room can be easily cleaned, and which is easy to use. SOLUTION: A suction head 10 has a communication pipe 13 to be connected to a cleaner main body, and it is provided with a head main body 11 having a suction port to be connected to the communication pipe 13 opened in a lower surface facing a subject surface to be cleaned. The head main body 11 comprises a base 17 having the communication pipe 13, and a first and a second suction port bodies 18, 19 disposed on the right and the left of the base 17. The suction port bodies 18, 19 are supported on the base 17 to be respectively rotatable from basic positions disposed in a line to the right and the left of the base 17 for a specified angular range backward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction head for a vacuum cleaner suitable for cleaning a narrow space between furniture and a corner of a room, and a vacuum cleaner having the suction head.

[0002]

2. Description of the Related Art A general household vacuum cleaner is provided with a cleaner body having a built-in electric blower, and a suction head connected to the cleaner body via a hose or an extension tube.

[0003] This suction head has a head body that is moved along the surface to be cleaned. The head body has a flat box shape that is elongated in the left-right direction, and a suction port facing the surface to be cleaned is opened on the lower surface of the head body. A communication pipe connected to the suction port is attached to the center of the upper surface of the head body. The communication pipe is connected to the cleaner body via a hose or an extension pipe.

Therefore, when the electric blower of the cleaner body is driven, a negative pressure acts on the suction port of the head body, and dust on the surface to be cleaned is sucked and removed through the suction port.

[0005] By the way, in order to clean the surface to be cleaned with this type of vacuum cleaner, it is necessary to move a long and thin suction head extending in the left-right direction back and forth along the surface to be cleaned. When trying to clean a narrow spot,
The ends of the suction head may interfere with the furniture and prevent the suction head from being inserted into the area to be cleaned.

For this reason, conventionally, the communication pipe and the head main body are rotatably connected to each other over an angle range of 90 °, and the suction head is turned by 90 ° when cleaning the narrow portion as described above. There is known a vacuum cleaner in which the suction head can be changed from a horizontally long posture along the left-right direction to a vertically long posture along the front-back direction by rotating the suction head.

According to this conventional vacuum cleaner, if the suction head is rotated in a vertically long position along the front-rear direction, the width of the suction head becomes narrow along the moving direction, and the space between the furniture is reduced. The suction head can be easily inserted into such a narrow place as described above.

[0008]

However, in the case where the suction head is rotated by 90 ° in a vertically long position along the front-rear direction for cleaning, the narrow portion to be cleaned is moved in the right-left direction perpendicular to the moving direction of the suction head. When there is a certain amount of space in the room, the suction head can be moved back and forth many times in the left and right direction while moving the suction head back and forth The position has to be shifted left and right and moved back and forth repeatedly.

For this reason, although the suction head can be guided to a narrow place, it takes time and effort to move the suction head, and the narrow place cannot be efficiently cleaned.

Further, since the suction head is fixed to either a horizontally long posture extending in the left-right direction or a vertically long posture extending in the front-rear direction, for example, when cleaning a corner of a room, the suction head is moved in the room. The suction head must be moved along the wall and the direction of movement of the suction head must be changed many times depending on the shape of the corner of the room.

As a result, especially when cleaning a corner of a room,
Since the moving direction of the suction head is restricted, a problem arises in that the cleaning becomes difficult and a part that cannot be completely cleaned remains on the surface to be cleaned.

The present invention has been made in view of the above circumstances, and it is possible to easily clean a narrow space such as a space between furniture and a corner of a room, and to easily use a vacuum cleaner for a vacuum cleaner. It is an object to provide a head and a vacuum cleaner having the suction head.

[0013]

According to a first aspect of the present invention, there is provided a suction head for a vacuum cleaner having a communication pipe connected to a main body of the vacuum cleaner and facing a surface to be cleaned. A head body is provided on the lower surface of which a suction port connected to the communication pipe is opened. The head body includes a base having the communication pipe, and first and second suction ports disposed on the left and right with the base interposed therebetween. The base has a suction passage connected to the communication pipe and the suction port, and is rotatable rearward from a basic position arranged in a line toward the left and right sides of the base over a predetermined angle range toward the rear respectively. It is characterized by being supported by.

[0014] In order to achieve the above object, the present invention provides a fourth aspect.
And a suction head connected to the cleaner body and moved along a surface to be cleaned. The suction head has a communication pipe connected to the cleaner main body, and includes a head main body having a suction opening connected to the communication pipe on a lower surface facing the surface to be cleaned, and the head main body includes: It comprises a base having the communication pipe, and first and second suction ports disposed on the left and right sides of the base. The first and second suction ports are formed by the communication pipe and the suction port. And the base is supported by the base so as to be rotatable rearward from the basic positions arranged in a line toward the left and right sides of the base over a predetermined angle range toward the rear, respectively. It is characterized by:

In such a configuration, when the suction head is inserted into a narrow place such as between furniture, at least one of the first and second suction ports of the head body comes into contact with the furniture, and The suction port rotates rearward with the base as a fulcrum. With this rotation,
Since the head body is bent around the base, the width of the head body in the left-right direction is narrower than when the first and second suction ports are at the basic position, and the head body is easily inserted into a narrow place. can do.

Since the first and second suction ports of the head body automatically rotate based on contact with the furniture, the operator should clean the head body without being conscious of the furniture. It can lead to narrow places. At the same time, the head body automatically bends into a shape that straddles between adjacent furniture, so cleaning is completed by simply moving this head body back and forth, and the suction head This eliminates the need for complicated operations such as moving the suction head back and forth many times in the left-right direction or moving the suction head in the left-right direction and repeatedly moving it back and forth.

In cleaning the corner of the room, when the head body is pressed against the corner of the wall, the first and second suction ports automatically rotate according to the shape of the corner, The head body is bent into a shape that matches the corner.
Therefore, it is not necessary to move the head body along the wall or change the moving direction of the suction head according to the shape of the corner of the room, and to guide the head body from any direction to the corner of this room. Can be.

According to the suction head for a vacuum cleaner of the present invention according to claim 2, the first and second suction ports described in claim 1 are always directed to the basic position via the spring means. It is characterized by being elastically biased.

According to this configuration, when the head body is pulled out from a narrow place or when the pressing of the head body against the corner of the wall is released, the first and second suction ports are automatically set via the spring means. It returns to the basic position, and can promptly shift to the next cleaning operation.

According to the suction head for a vacuum cleaner of the present invention according to claim 3, the first and second suction ports described in claim 1 or 2 respectively protrude to the left and right sides of the base. Having at least a first end
In addition, a movable wheel that protrudes toward the front of the second suction port body is provided.

According to this structure, when the head body is pushed between furniture and pressed against a corner of a wall, the movable wheel rotatably contacts the furniture or wall, and the furniture or wall comes into contact with the first or the first furniture. It is possible to prevent a large resistance from being generated at a contact portion with the second suction port body and prevent the ends of the suction port body from being caught on furniture or a wall. Therefore, the head body can be smoothly bent, and the furniture and the wall can be prevented from being damaged.

[0022]

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

FIG. 1 shows a general household vacuum cleaner 1. This vacuum cleaner 1 has a cleaner body 2. The cleaner body 2 has a hose insertion port 3 connected to a dust collection chamber (not shown), and one end of a flexible hose 4 is detachably connected to the hose insertion port 3.

At the tip of the hose 4, a hand operation unit 5 is attached. The hand operation unit 5 includes a grip 6 and an operation panel 7. The suction head 10 is detachably connected to the hand operation unit 5 via a pair of extension tubes 8a and 8b.

The suction head 10 has a cleaning surface C (FIG. 5).
(Shown in FIG. 2). The head main body 11 has an elongated flat box shape extending in the left-right direction orthogonal to the extension tubes 8a and 8b.

As shown in FIG. 2 and FIG. 5, a connection port 12 projecting upward
Are formed. The connection port 12 is opened toward the rear of the head main body 11. A communication pipe 13 is connected to the connection port 12 so as to be rotatable around an axis. The communication pipe 13 protrudes rearward of the head main body 11, and the extension pipe 8b is detachably connected to a protruding end of the communication pipe 11.

The head main body 11 has a suction port 14 on the lower surface facing the surface C to be cleaned. The suction port 14 has an elongated opening shape extending in the left-right direction, and the connection port 12 is connected to a central portion of the suction port 14 along the longitudinal direction.

Therefore, when a suction negative pressure is generated in the dust collection chamber of the cleaner body 2, the negative pressure is applied to the hose 4 and the extension pipe 8.
a, 8b, the communication pipe 13, and the connection port 12 act on the suction port 14, and the dust on the surface C to be cleaned is sucked into the suction port 1.
4 to be removed by suction.

By the way, when the head body 11 of the suction head 10 is inserted into a narrow place, for example, between furniture, or is pressed against a corner of a wall constituting a corner of a room, the width dimension and the corner of the gap are changed. The head body 11 is bent in accordance with the shape of the portion. Hereinafter, the configuration of the head body 11 will be described.

As shown in FIGS. 2 to 5, the head body 11 includes a base 17, and first and second suction ports 18 and 19 supported by the base 17.

The base 17 is located at the center of the head body 11 in the width direction. The base 17 has a disk-shaped support plate 17a and a guide plate 17b extending downward from the peripheral edge of the support plate 17a.

The connection port 12 is integrally formed at the center of the upper surface of the support plate 17a, and a communication port 20 connected to the connection port 12 is opened at the center of the support plate 17a. A pair of first guide grooves 21 are formed on the upper surface of the support plate 17a. The first guide groove 21 is
They are arranged symmetrically with the connection port 12 interposed therebetween, are coaxial with the center line X1 of the support plate 17a, and are formed over a predetermined angle range along the direction around the axis. The first guide groove 21 has first and second ends 22 a and 22 b separated from each other in the circumferential direction, and the first end 22 a is located in front of the connection port 12. .

The guide plate 17b is curved in an arc shape in the front half of the base 17 along the circumferential direction of the support plate 17a. On the front surface of the guide plate 17b, a second guide groove 23 extending in the circumferential direction of the guide plate 17b is formed.

The first and second suction ports 18,
Reference numeral 19 is arranged symmetrically with respect to the base 17. Since the suction ports 18 and 19 have basically the same configuration, the first suction port 18 will be described as a representative.

As shown in FIGS. 2 and 3, the first suction port body 18 includes a rectangular top plate 25, a front plate 26, a side plate 27, and a rear plate 2 extending downward from the periphery of the top plate 25.
8 as a whole, and has a flat box shape that is open downward and sideward as a whole. The downward open end of the first suction port body 18 constitutes the suction port 14. The top plate 25, the front plate 26, the side plate 27, and the rear plate 28 cooperate with each other to form a suction passage 29 inside the first suction opening body 18, and the suction passage 29 is provided at the suction opening. It is connected to 14.

The top plate 25 has a first guide portion 30 at an end opposite to the side plate 27. First guide part 30
Are slidably superimposed on the outer peripheral portion of the upper surface of the support plate 17a. The first guide portion 30 has a pair of first
Are formed, and these first guide projections 31 are slidably fitted in the first guide grooves 21.

The end of the front plate 26 opposite to the side plate 27 is
It is slidably superimposed on the front surface of the guide plate 17b of the base 17. A second guide protrusion 32 is formed at an end of the front plate 26, and the second guide protrusion 32
The second guide groove 23 is slidably fitted in the second guide groove 23.

The rear plate 28 has a second guide portion 33 at an end opposite to the side plate 27. Second guide part 33
Are curved in an arc shape along the periphery of the support plate 17a. The second guide portion 33 of the first suction port member 18 and the second guide portion 33 of the second suction port member 19 are slidably overlapped with each other as shown in FIGS. In this state, it is slidably abutted against the lower surface of the support plate 17a.

For this reason, the first suction port 18 and the second suction port 19 are supported by the base 17 via the first and second guide portions 30 and 33, and the first guide port is provided with the first guide port 30 and the second guide section 33. It can rotate along the groove direction of the groove 21.

More specifically, the first and second suction ports 18 and 19 are arranged in a line toward the left and right sides of the base 17 as shown in FIGS. It is supported by the base 17 so as to be rotatable from the basic position toward the rear of the base 17 over an angle range of approximately 45 °. The first and second suction ports 18, 19
Is rotated to the basic position, one of the first guide projections 31 abuts against the first end 22a of the first guide groove 21, and the first and second suction ports 18,
The edge of the front plate 26 and the edge of the first guide portion 30 abut against each other, and further suction ports 18, 1
9 is limited.

As shown in FIGS. 3 and 6A, the guide plate 17b of the base 17 has a pair of edge portions 34 which are separated in the circumferential direction. The edge 34 is connected to the suction passage 29 of the first and second suction ports 18, 19.
Overhangs. This edge portion 34 includes first and second
Facing the rear plate 28 of the suction port bodies 18, 19 of
A communication port 35 is formed between them, and through this communication port 35, the communication port 2 of the suction passage 29 and the base 17 is formed.
0 is communicated.

As shown in FIG. 2, the first and second suction ports 18 and 19 are constantly biased toward the basic position via a spring member 37 as spring means. The spring member 37 is made of a metal wire, and includes first and second wires.
Are arranged straddling between the top plates 25 of the suction port bodies 18 and 19.

The spring member 37 has a support portion 38 curved in an arc shape, and a pair of arm portions 39a and 39b extending linearly from both ends of the support portion 38 to the left and right sides. The support portion 38 is fixed to the upper surface of the support plate 17a of the base 17 in a state surrounding the front half of the connection port 12. Arm 3
The spring seats 9a, 39b are guided from the upper surface of the support plate 17a onto the top plate 25 of the first and second suction ports 18, 19, and the tips of the spring seats 4 project upward from the top plate 25.
It is slidably hooked to zero.

Then, the first and second suction ports 1
8 and 19 are rotated to the basic position.
Arms 39a, 39b extend linearly along the left-right direction of the head main body 11, and the first and second suction ports 18, 19 are formed by the elasticity of the arms 39a, 39b.
Is held in the basic position.

As shown in FIGS. 2 and 3, the first and second suction ports 18 and 19 have a movable ring 41 at an end opposite to the base 17. The movable wheel 41 is located at a corner defined by the front plate 26 and the side plate 27 of the first and second suction ports 18 and 19, and each rotates around a vertical axis along the thickness direction of the head main body 11. It is supported by the suction port bodies 18 and 19 as much as possible. And the movable wheel 41
Project toward the front and side of the first and second suction ports 18 and 19.

In the electric vacuum cleaner 1 having such a configuration,
For example, when cleaning a narrow place such as between furnitures, the head body 11 of the suction head 10 is inserted between furnitures along the surface C to be cleaned. Then, the first and second suction ports 18, 18 according to the width dimension of the portion to be cleaned.
At least one of the contacts 19 comes into contact with the furniture, and the suction ports 18 and 19 rotate rearward around the base 17.

FIG. 6 shows a state in which the first suction port body 18 located on the right side of the base 17 is rotated rearward by contact with furniture, and FIG. 7 shows the first and second suction ports. The figure shows a state in which the bodies 18 and 19 are rotated rearward due to contact with furniture. Due to this rotation, the head body 11 is bent around the base 17, so that the width L of the head body 11 in the left-right direction is smaller than when the first and second suction ports 18, 19 are at the basic position. . For this reason, the head main body 11 can be easily inserted between the furniture, and the operator can simply push the head main body 11 between the furniture.

Then, the first and second suction ports 1
8, 19 automatically rotate so as to avoid the furniture based on the contact with the furniture, so that the worker can clean a narrow portion between the furniture without being conscious of the furniture.

Further, in this case, since the head main body 11 is straddled between furnitures, a narrow portion between the furnitures can be cleaned only by moving the head main body 11 back and forth. The troublesome work of moving the head back and forth in the left and right direction many times while moving the head back and forth, or shifting the position of the suction head left and right and repeatedly moving it back and forth becomes unnecessary.

Accordingly, workability in cleaning a narrow portion is improved, and a portion which cannot be completely cleaned on the surface C to be cleaned hardly remains.

When cleaning the corner of the room, the head body 11 is pressed against the corner of the wall. Then, the first and second suction ports 18 and 19 automatically rotate according to the shape of the corner, and the head main body 11 is bent into a shape that matches the corner. Therefore, when cleaning the corner of the room, the head main body 11 can be pressed from any direction against the corner of the wall, and the head main body 11 can be moved along the wall as in the related art, It is not necessary to change the moving direction of the head main body 11 according to the shape.

Therefore, the restriction on the moving direction of the suction head is greatly eased, and it is possible to easily clean the area near the wall, and it is difficult to leave a portion that cannot be completely cleaned at the corner of the room.

Further, according to the suction head 10 having the above structure, even if a table or a chair is placed on the surface C to be cleaned, the first and second suction ports 18 and 19 are attached to the legs of the table or the chair. When at least one of them comes into contact, the suction port members 18 and 19 independently rotate rearward so as to avoid the legs. Therefore, when the suction head 10 is moved back and forth for cleaning, it is not necessary to be aware of the presence of the legs, and this also contributes to the improvement of workability.

In addition, the first and second head bodies 11
Are always biased toward the basic position via the spring material 37, so that the head body 11
When the head is pulled out from between furniture or the pressing of the head body 11 against the corner of the wall is released, the first and second suction ports 18 and 19 automatically return to the basic positions. For this reason, it is possible to promptly shift to the next cleaning operation, and efficient cleaning can be performed.

In addition, the first and second suction ports 1
At the corners defined by the front plate 26 and the side plate 27 of the heads 8 and 19, the movable wheels 41 extending forward and to the sides of the suction opening members 18 and 19 are provided, respectively.
When 1 is pushed between furniture or pressed against a corner of a wall, the movable wheel 41 is likely to come into contact with furniture or a wall.

For this reason, a large resistance is generated at a contact portion between the furniture and the wall and the first and second suction ports 18 and 19, or the first and second suction ports 18 and 19 are generated.
Is difficult to get caught on furniture and walls. Therefore, the head main body 11 smoothly bends to an angle close to 90 ° according to the shape of the gap or the corner of the wall, so that the head body 11 can be easily cleaned and the furniture and the wall can be prevented from being damaged. it can.

[0057]

According to the present invention described in detail above, when the head main body is inserted into a narrow place such as between furniture, the head main body bends around the base and the first and second suction ports are formed. Since the width of the head body in the left-right direction is narrower than when it is in the basic position, the head body can be easily inserted into narrow places, and the operator can easily clean the furniture without being aware of the furniture .

Further, since the head body is bent so as to straddle between furnitures, it is possible to clean a narrow portion only by moving the head body back and forth.
The usability is improved accordingly.

Also, when cleaning a corner of a room, the head main body is bent into a shape that matches the corner, so that the head main body can be pressed against the corner of the wall from any direction. Thus, there is no need to move the head body along the wall or change the moving direction of the head body according to the shape of the corner. Therefore, there is an advantage that the restriction on the moving direction of the suction head is greatly eased and the wall can be easily cleaned.

[Brief description of the drawings]

FIG. 1 is a perspective view of a vacuum cleaner having a suction head according to the present invention.

FIG. 2 is a perspective view of the suction head showing a state where first and second suction ports of the head main body are turned to a basic position.

FIG. 3 is a perspective view of a suction head when the head main body is viewed from a suction port direction.

FIG. 4 is a perspective view of the suction head showing a state in which first and second suction ports of the head main body are rotated rearward from a basic position.

FIG. 5 is a sectional view of a suction head.

FIG. 6A is a plan view of the suction head when first and second suction ports of the head main body are rotated to a basic position. (B) is a sectional view of the suction head when the first and second suction ports of the head main body are turned to the basic position.

FIG. 7A is a plan view of the suction head when only a first suction port body of the head main body is rotated backward.
(B) is a sectional view of the suction head when only the first suction port body of the head main body is rotated backward.

FIG. 8A is a plan view of the suction head when first and second suction ports of the head main body are individually rotated rearward. (B) is a sectional view of the suction head when the first and second suction ports of the head main body are individually rotated rearward.

[Explanation of symbols]

 2 ... cleaner body 10 ... suction head 11 ... head body 13 ... communication pipe 14 ... suction port 17 ... base 18 ... first suction port body 19 ... second suction port body 29 ... suction passage C ... surface to be cleaned

Claims (4)

[Claims] 1. A head body having a communication pipe connected to a cleaner body and having a suction port opened on a lower surface facing a surface to be cleaned and connected to the communication pipe, wherein the head body includes the communication pipe. And a first and a second suction port disposed on the left and right sides of the base, and the first and second suction ports are connected to the communication tube and the suction port. And the base is rotatably supported by the base from a basic position arranged in a line toward the left and right sides of the base over a predetermined angle range toward the rear, respectively. Suction head for vacuum cleaner. 2. The electric device according to claim 1, wherein the first and second suction ports are always elastically biased toward the basic position via spring means. Suction head for vacuum cleaner. 3. The first or second suction port body according to claim 1, wherein the first and second suction ports each have an end protruding left and right sides of the base, and at least the first end is provided at this end. And a movable head that protrudes toward the front of the second suction opening body. 4. A vacuum cleaner comprising: a cleaner main body; and a suction head connected to the cleaner main body and moved along a surface to be cleaned, wherein the suction head is attached to the cleaner main body. A head body having a communication pipe to be connected and having a suction opening connected to the communication pipe on a lower surface facing the surface to be cleaned, the head body having a base having the communication pipe, and sandwiching the base; And first and second suction ports disposed on the left and right sides of the base, the first and second suction ports having a suction passage communicating with the communication pipe and the suction port, and The electric sweeping device is supported by the base so as to be rotatable rearward from a basic position arranged in a line toward the left and right sides over a predetermined angle range, respectively. Machine.