JP3343243B2 - Reflux or suction type vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the field of electric vacuum cleaners using a fan motor, and relates to a suction type vacuum cleaner or a recirculation type vacuum cleaner which reuses energy downstream of a fan motor. In particular, the present invention relates to a vacuum cleaner in which a main body including an upright-type or crawl-type fan motor is connected to a cleaning head.

[0002]

2. Description of the Related Art Vacuum cleaners have practically required performances covering a large number of items, all of which must be satisfied. When enumerating the items, large size dust suction
Small size, light weight, power saving, nozzle width, groove sand removal, carpet sand removal, thin material non-adsorption, quiet noise, thread debris-wall sand removal, beans-
Rice-Coin-Removal of small hardware
The problem is that the temperature rises, the filter degrades due to dust accumulation, various types of replacement nozzles, no sand is blown out by the recirculation jet, low exhaust, etc. In particular, in the case of the above-mentioned large dust suction, since the gap between the head and the floor is small, it is necessary to lift the head and put it on the large dust, but in the case of an upright type or crawl type with improved operability by removing the hose, a heavy fan fan We had to lift the subject including at the same time.
In addition, the head cannot be caught and passed if the main body is lifted in the same manner even when the vehicle goes over the step during the movement. In any case, the large weight of the main body deteriorates the operability, and has a drawback that it is difficult for old people and children to handle.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the drawbacks of the conventional upright type and crawl type vacuum cleaners.
An object of the present invention is to provide an upright-type or crawl-type vacuum cleaner in which a large-sized dust can be easily sucked and a person can easily climb over a step by lifting a head by a simple operation of a handle.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a cleaning head having a suction port and a main body composed of a filter and a fan motor are integrally connected to each other and have a handle supported by the main body. In a vacuum cleaner or a vacuum cleaner in which a handle integrally formed with at least a filter or a fan motor is supported by a cleaning head having a suction port, the handle is rotatable left and right with a tilt shaft that can be tilted up and down. When the handle is tilted downward while maintaining the handle at a neutral rotation angle that does not rotate left and right, the portion behind the joint that tilts integrally with the handle is a floor surface. Forming a fulcrum in contact with, and further tilting the handle portion downward, the cleaning head pivots upward around the fulcrum and separates from the floor surface,
Tilt down with the handle turned left and right
And the part behind the joint does not touch the floor and
The removal head is not separated from the floor surface . With the above configuration, the head can be lifted by tilting the handle rearward and downward, so that large-sized dust can be easily sucked and the vehicle can climb over a step. In addition, if the handle is tilted rearward and downward in a horizontally twisted state, the handle can be sufficiently tilted, so that the cleaner can be inserted deeply without obstructing the handle when cleaning a narrow space in the upper space.

Further, the present invention provides a vacuum cleaner having a handle integrally supported by a cleaning head having a suction port and a main body comprising a filter and a fan motor, or a cleaning head having a suction port. In a vacuum cleaner supporting at least a handle integrally formed with a filter or a fan motor, the handle is connected via a coupling portion having a tilt shaft capable of tilting up and down and a rotating shaft capable of rotating left and right. If the handle is tilted downward while maintaining the handle at a central rotation angle that does not rotate left and right, a portion that tilts integrally with the handle contacts a main body or a part of the cleaning head that is behind the tilt axis of the coupling portion. When the handle is further tilted rearward and downward, the main body or the cleaning head is pivoted upward around the rear contact point of the cleaning head so that the front edge of the cleaning head is separated from the floor surface. While rotating the handle to the right and left
The part that tilts together with the handle when tilted downward with
Is behind the tilting axis of the connection part of the main body or the cleaning head
The cleaning head is separated from the floor
It is characterized by not having . With the above configuration, the head can be lifted by tilting the handle rearward and downward, so that large-sized dust can be easily sucked and the vehicle can climb over a step.
Further, if the handle is tilted rearward and downward in the state of being twisted sideways, the handle can be sufficiently tilted, and the cleaner can be inserted deeply without obstructing the handle when cleaning a narrow place.

[0006]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows the first crawl mold of the present invention.
1A and 1B are side views, and FIGS.
Is a plan view. FIG. 2 is a perspective view schematically showing the first embodiment of the upright type. 3A and 3B are side views schematically showing a crawl mold according to a second embodiment of the present invention.

In FIG. 1, reference numeral 601 denotes a main body including a head having a suction port and the like, a filter, a fan motor and the like. The main body may be a reflux type or a suction type. 602 is a handle, and 603 is a coupling between the handle and the main body. Handle is 605 with sliding surface as left
It can rotate to the right, and at the same time, the connecting shaft 6 with the main body of 603
It can tilt up and down around 04. FIGS. 1A and 1B both show the case where the rotation of the handle is in the middle position and the tilt is in the normal position (shown by a dotted line), and the case where the tilt is the lower limit position (shown by a solid line). theta ₁ is in the range of normal tilt angle. A is a side view and B is a top view. FIGS. 1C and 1D show a state in which the handle is rotated (twisted) to the left by 90-horizontal while the tilt of the handle is in the normal middle position.

When the handle shown in FIGS. 1A and 1B is at the intermediate rotation angle, a contact portion or a wheel (in the illustrated example, a wheel) 606 having a sliding surface with the floor is provided slightly behind and below the connecting portion. . The handle is tilted down and the abutment or wheel 606
Angle but in contact with the floor, which is the lower limit of the normal tilt angle theta _1. When the handle is further tilted downward in the range of θ ₂ , the head 601 is pivoted on the contact portion or the wheel 606 on the floor.
The whole or the front edge of the head 601 floats (lift).
This lift can be lightened by taking in large-sized dust that cannot pass below the front edge of the head 601 at a normal tilt angle, or by slightly tilting the handle and pushing a high step that cannot hit the front edge due to collision with the front edge. Make it possible to get over.

When the handle is turned to the left (right) as shown in FIGS. 1C and 1D, the contact portion or the wheel 606 is directed to the right (left) side of the base of the handle and does not touch the floor. In this rotation position, the handle can be tilted to an arbitrary angle, and in the posture shown in the drawing, the head 601 can be inserted deep into a low desk or under a shelf without disturbing the handle to clean the floor surface. it can. FIG. 2 shows an embodiment of an upright type. In the figure, reference numeral 701 denotes a horizontally recirculating head, which is provided with a floor sensor SF which generates a signal ON when the head 701 is lifted. A head suction pipe 712 is connected to one end of the nozzle 702, and a detachable connection part of the nozzle end 703 of the suction pipe 704 is connected to the other end of the suction pipe 704. The micro switch for detecting the attachment / detachment of the nozzle end 703 is a hose sensor SH. It is provided as. Head suction tube 712
Can be tilted up and down by the connecting portion 714 and the connecting portion 71
3 is coupled to the head 701 so as to be rotatable left and right. The main body to which the handle 715 is fixed is the filter 70.
6. A fan motor 707 is built in and fixed to the coupled portion 702. Reference numeral 708 denotes a discharge port for adjusting the recirculation rate, and 709 denotes a vane valve of a mode switching valve, which is shut off from the outside air at a position indicated by a solid line in the drawing, and exhaust gas from the fan motor 707 is supplied to the head 701 via a recirculation pipe 710. When the handle 715 is tilted downward at the neutral rotation angle, the coupling portions 713 and 714 are formed.
The lower part of the head intake pipe 712, which is slightly behind, serves as an abutment part, which comes into contact with the floor, and when the handle 715 is further tilted downward, the head 701 as a whole is supported by the abutting part, which comes in contact with the floor.
Alternatively, the front edge of the head 701 floats (lift). When the handle 715 is turned to the left (right), the handle 715 turns to the right (left) side of the base of the contact handle, so that it does not touch the floor. In this pivot position, the handle can be tilted at any angle. FIG. 3A,
B shows a second embodiment based on the same principle. In the figure, reference numeral 601 denotes a main body including a head having a suction port and the like, a filter, a fan motor, and the like. The main body may be a reflux type or a suction type. 602 is a handle,
It can rotate left and right with 605 as a sliding surface, and at the same time can tilt up and down around a coupling shaft 604 with the main body. In the upright type, the head portion is provided, and in the crawl type, the contact portion 607 with the contact portion 606 of the handle is provided behind the joint tilting shaft 604.
2 is tilted rearward and downward, and when the angle becomes the lower limit θ ₁ , the contact portion 606 comes into contact with the contact portion 607, and the head or the main body 601 is moved by the rotational moment having the arm between the contact point and the tilt shaft 604. Is rotated, and the front edge of the head 601 floats around the rear wheel axle (FIG. 3A) or when no wheels are provided, the head or main body 601 floats around the rear lower end 608 (FIG. 3B). When having a rear wheel, the rear wheel supports the fulcrum and can easily travel with the front edge lifted, so that the contact portion 606 does not require a wheel.
When the handle 602 is rotated and twisted, the contact portion 60
That the handle 6 does not contact the contact portion 607 and the handle can be tilted to the horizontal is similar to the case where the contact portion 606 directly contacts the floor. In the reflux type, it is necessary to connect the head and the main body with two tubes, a suction tube and a reflux tube, and it is inconvenient to handle the hose regardless of whether it is connected with a double hose or a double hose. Become. On the other hand, since the main body is of a reflux type and high efficiency, it is possible to reduce the size and weight, so the head and the main body are integrated, and the connecting hose is unnecessary or can be minimized, and before and after cleaning It is possible to enjoy the simplicity of the hoseless without being conscious of the weight in the scanning. Such a structure conventionally includes an upright type. However, the upright type has a drawback that the weight of the main body is hung on the handle and is heavy. The inventor focused on the small size and light weight of the recirculation type main body, proposed a structure in which the head and the main body were integrally supported by a car on the floor surface, and the hand only needed to support the lightweight handle, and named the CRAWL type. . Even with the conventional suction type, handling of the hose is troublesome, and an upright type and a crawl type are desirable. Upright (UP-
The RIGHT type and Crawl type are small and lightweight, but the only inferior point to the canister type cleaning head is that they can be used to suck large (dimensions) dust or to go over steps such as thresholds. Sometimes, the canister can be easily lifted into the air to cover large trash or cross the threshold because it is the weight of the head alone, whereas lifting the head and body in the air with the head and body together is not possible due to the weight. That is appropriate. This problem is not limited to the reflux type, but is a serious problem even in the conventional suction type upright or crawl type having a heavy body. This measure can be solved by lifting the front edge of the head upward with a light handle while supporting the weight of the main body on the floor. The inventor has already filed a patent application (Japanese Patent Application No. 6-76108) for a crawl type that supports the weight of the main body on the floor and lifts the front edge of the head by tilting the handle backward with the wheel or sliding portion as a fulcrum. The head was also expanded to the upright type, and the handle was not able to be tilted beyond the starting point of the lift. The (leading edge) lift mechanism is the present invention.

[0010]

As described above, according to the present invention, a head (front edge) can be lifted without lifting a heavy main body in a vacuum cleaner in which the head is integral with the main body such as an upright type or a crawl type. Large dust can be easily sucked or passed through a step when moving.

[Brief description of the drawings]

FIG. 1 is a view schematically showing a first embodiment of a crawl mold according to the present invention, wherein A and C are side views, and B and D are plan views.

FIG. 2 is a side view schematically showing an upright type first embodiment of the present invention.

FIGS. 3A and 3B are side views schematically showing a crawl mold according to a second embodiment of the present invention.

[Explanation of symbols]

 601 Main body 602 Handle 603 Connector 604 Tilt axis 605 Rotating sliding surface 606 Contact part 701 Head 702 Coupled part 703 Nozzle end 704 Suction pipe 706 Filter 707 Fan motor 712 Head suction pipe 713, 714 Coupling part 715 Handle

Continuation of the front page (56) References JP-A-4-220222 (JP, A) JP-A-64-40019 (JP, A) JP-A 50-95854 (JP, U) JP-A 50-121561 (JP , U) Japanese Utility Model Showa 51-13663 (JP, U) Japanese Utility Model Showa 54-108579 (JP, U) Japanese Utility Model Showa 54-110171 (JP, U) Japanese Patent Publication No. 1-4324 (JP, B2) Japanese Patent Publication No. 55-35130 (JP, B1) JP-B-59-167773 (JP, B1) JP-B-55-9303 (JP, Y1) JP-B-54-37580 (JP, Y1) (58) Fields surveyed (Int. Cl. ⁷ , DB name) A47L 9/32

Claims (2)

(57) [Claims] A cleaning head having a suction port and a main body composed of a filter and a fan motor integrally connected to the cleaning head or a cleaning head having a suction port; Alternatively, in a vacuum cleaner supporting a handle integrally formed with a fan motor, the handle is supported via a coupling portion having a tilt axis that can tilt up and down and a rotation axis that can turn left and right, When the handle is tilted downward while not rotating to the left and right while rotating at the center rotation angle, the portion behind the joint that tilts integrally with the handle contacts the floor to form a fulcrum, and further tilts the handle downward. Then, the cleaning head rotates upward around the fulcrum and separates from the floor surface , and tilts downward with the handle rotated left and right.
And the part behind the joint does not touch the floor and
The cleaning head is characterized in that the removing head is not separated from the floor surface.
Remover . A cleaning head having a suction port and a main body comprising a filter and a fan motor are integrally connected to each other, and a vacuum cleaner having a handle supported by the main body; Alternatively, in a vacuum cleaner supporting a handle integrally formed with a fan motor, the handle is supported via a coupling portion having a tilt axis that can tilt up and down and a rotation axis that can turn left and right, If the handle is tilted downward while maintaining the handle at a central rotation angle that does not rotate left and right, the part that tilts integrally with the handle contacts the main body or a part of the cleaning head that is behind the tilt axis of the coupling part. the front edge of the cleaning head to be tilted rearward and downward the metallic or pivots upward around the rear contact floor point of the cleaning head is spaced from the floor, the handle It tilts downward in a state of being rotated to the left and right
And the part that tilts integrally with the handle is mainly or
Abuts a part of the removal head that is behind the tilting axis of the joint.
The cleaning head is not separated from the floor surface.
Vacuum cleaner to do .