JP2510566B2 - Electric vacuum cleaner - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner, and more particularly to an electric vacuum cleaner having a hose connection portion which is easy to handle.

[Conventional technology]

A general vacuum cleaner is provided with a locking clamp in order to detachably attach the vacuum cleaner body and the hose.

The locking clamp is provided on the cleaner body side or the hose connection portion side so that the cleaner body and the hose are detachable.

[Problems to be Solved by the Invention]

However, in the means for providing the locking clamp on the cleaner body side, since the locking clamp is on the body side, it is necessary to operate with both hands when removing the hose from the cleaner body, which is not easy to handle. There was such a problem.

On the other hand, in the means for providing the locking clamp on the hose connection side, a cover case for providing the locking clamp on the hose pipe is provided, and further, a cover case is provided so as to cover them, and they are fastened and fixed with screws or the like. However,
The screw boss for fastening has to be newly formed, and the diameter of the hose connecting portion becomes large, which makes it difficult to hold the connecting portion, which has the drawback of poor handleability.

An object of the present invention is to solve the above-mentioned problems and to provide an electric vacuum cleaner with improved handleability.

[Means for solving the problem]

In order to achieve the above object, a feature of the present invention is that a pipe provided at a tip end portion of a hose connected to a cleaner body, a screw boss projecting from the pipe, and a plurality of pipes covering the pipe. And a locking clamp provided to connect the pipe and the cleaner body, and the locking clamp is provided with a first opening, and the first opening is provided in the first opening. A part of the pipe is formed by penetrating the screw boss, providing a second opening in at least one cover case of the plurality of cover cases, and projecting a part of the locking clamp from the second opening. And a screw is screwed into the screw boss to fasten the one cover case and the pipe.

[Action]

According to the present invention, since the screw position for fastening the cover case that covers the pipe is provided in the opening of the clamp, it is possible to reduce the outer diameter of the connection portion and to remove the hose from the cleaner body. The operability of can be improved.

Further, according to the present invention, since the screw boss is provided by penetrating the opening of the clamp, the screw boss serves as a guide during the clamp operation, the clamp operation is reliable, and the reliability and operability are improved. can do.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 2, 1 is a cleaner body, 2 is a hose, 3 is an extension pipe, 4 is a mouthpiece, and the hose 2 has a body connecting portion at one end.
5, The operation part 6 is provided at the other end. Reference numeral 7 is an indicator showing the clogging state of the filter.

FIG. 1 and FIG. 3 are cross-sectional views of the main body connecting portion 5, showing an engagement state with the cleaner main body 1.

In FIG. 1 and FIG. 3, reference numeral 8 denotes a substantially L-shaped pipe, one end of which is connected to the cleaner body 1 side and the other end of which is connected to the bellows portion 2 a of the hose 2. Reference numerals 9 and 10 denote a cover case (right) and a cover case (left) that cover the pipe 8 by dividing it from left and right, and are fastened with screw 13 to screw bosses 11 and 12 provided integrally with the pipe 8. . 14 is a locking clamp, 15 is a spring, 16 is a claw portion of the locking clamp 14, 17 is a locking clamp operating portion, 18 is a fulcrum rib, 19 is a pipe 8.
The screw seats provided on the, and 20 also show the supporting ribs. twenty one
Is a holder for a pair of contact pins 22 provided integrally with the pipe 8, and a pair of left and right is provided on the mating surfaces of the cover cases (left) 9 and (right) 10. The ribs 23 provided on the cover case prevent the contact pin 22 from coming off.

Reference numeral 24 denotes a hose port A, which is an engaging portion 25 of the engaging clamp 14.
Are provided in the left and right recesses. Further, on the outer periphery, a cylindrical slip ring 26 is provided in the groove portion 27, and has a two-tiered structure.

Further, contacts 28 that make electrical contact with the contact pins 22 are provided respectively. 29 is an airtight packing, 30 is a hose port, and is fastened to the hose port 24 with a screw 31. On the bottom, ring-shaped slip rings (large) 32, (small) 33
Is provided.

Each of the hose opening 24 and the hose opening 30 has a cylindrical shape, and the guide rib 3 provided on the case of the cleaner body 1
4, and is held rotatably by the guide ribs 35.

Reference numeral 36 denotes a shutter that opens and closes the connection port 37.

7 and 8 show the bellows portion 2a of the hose 2, in which two core wires 38 are arranged in a spiral shape, and a PVC skin layer is provided.
39 is bonded to form the bellows portion 2a. The core wire 38 is
The iron wire 40 and the covered electric wire 41 are covered with an insulating layer 42.

Next, the electrical connection will be explained.
Two electric circuits are provided, one of which is an operation switch 45 when the electric blower 43 built in the electric vacuum cleaner body 1 is output controlled by the control circuit 44 (built in the operation unit 6 of the hose 2). And the main body, and the other one is for supplying electric power for driving the carpet suction port 2 electrically.

The iron wire 40 of the hose 2 is used for control and is connected to the contact pin 22 in the connection part 5, and further includes the contact piece 28, the slip ring 27,
It is connected to the control circuit 44 through a contact piece (not shown). The covered electric wire 41 is used to supply power to the mouthpiece 2, and is connected to the power supply via the contact pin 22, the contact piece 28, the slip rings 32 and 33, and the contact piece 46.

Explaining the operation with the above configuration, when cleaning,
Pull out the cord (not shown) from the cleaner body 1 and plug
47 is connected to a power outlet, the hose 2, the extension pipe 3 and the suction port 4 are connected, and the operation switch 45 of the operation unit 6 is adjusted to operate and clean.

To attach and detach the hose 2, the engaging claw 16 is released by pushing the engaging clamp 14, and the hose 2 is removed by pulling up the connecting portion 5. When connecting in reverse, it is engaged by pushing in as it is. At this time, the screw boss 12 is inserted in the opening 14a of the engaging clamp 14, and the engaging clamp 1
4 Acts as a motion guide during operation.

〔The invention's effect〕

As described above, according to the present invention, since the screw position for fastening the cover case that covers the pipe is provided in the opening of the clamp, the outer diameter of the connecting portion can be reduced and the hose can be cleaned. It is possible to improve the operability when detached from the machine body.

Further, according to the present invention, since the screw boss is provided by penetrating the opening of the clamp, the screw boss serves as a guide during the clamp operation, the clamp operation is reliable, and the reliability and operability are improved. can do.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment according to the present invention, FIG. 2 is a perspective view of a main body, FIG. 3 is a sectional view rotated by 90.degree.
The figure is a divided perspective view, and Fig. 5 (a) is a bottom view of the connecting portion.
FIG. 6B is a front view of the main body side connection portion, FIG. 6 is a perspective view of the connection portion, FIG. 7 is a side view of the hose portion, FIG. 8 is an enlarged sectional view of the hose portion, and FIG. 9 is a circuit diagram. Is. 2 …… Hose, 5 …… Connecting part, 8 …… Pipe, 9,10 ……
Cover case, 12 …… Screw boss, 14 …… Locking clamp,
14a …… Opening.

Claims (1)

(57) [Claims] 1. A pipe provided at a tip portion of a hose connected to a cleaner body, a screw boss provided so as to project from the pipe, a plurality of cover cases for covering the pipe, the pipe and the cleaner. A locking clamp provided for connecting to the main body, the locking clamp having a first opening, the screw boss extending through the first opening, and the plurality of cover cases A second opening is provided in at least one cover case, a part of the locking clamp is projected from the second opening to cover a part of the pipe, and a screw is screwed into the screw boss. An electric vacuum cleaner characterized in that the pipe is fastened to the one cover case.