JPH0630132Y2 - Vacuum cleaner - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an electric vacuum cleaner in which a dust suction hose is connected to a suction port of a main body case.

[Conventional technology]

Generally, an electric vacuum cleaner has a structure in which a dust suction hose having a remote circuit is connected to a suction port provided in a main body case. That is, since this remote circuit is electrically connected to the main body case side at the same time as connecting the hose to the suction port, it can be connected to the tip of the hose by driving the electric blower built into the main body case by this remote circuit. The dust sucked from the floor brush enters the main body case through the hose and is captured by, for example, a paper bag filter set in the dust collection chamber. The air stream from which dust has been removed is discharged to the outside through an electric blower and an exhaust port provided at the rear of the main body case. The hose has a proper length and flexibility, and the hose can be pulled to move the main body case.

[Problems to be solved by the invention]

In the conventional electric vacuum cleaner as described above, since the dust suction hose is usually fixed to the suction port of the main body case, for example, when cleaning the side or the rear of the main body case, the hose has a heavy weight each time. It is necessary to pull a certain body case to change its direction, or when the direction of the main body case does not change, the hose itself will be twisted and it is necessary to frequently retwist the hose. There was a problem that it became difficult.

The present invention has been made to solve the above problems, and an object thereof is to obtain an electric vacuum cleaner which can prevent the dust suction hose from twisting and which is excellent in operability.

[Means for solving problems]

In the vacuum cleaner according to the present invention, a suction port communicating with the dust collecting chamber is provided on the upper surface of the main body case, a dust suction hose is detachably connected to the suction port, and the main body side provided in the main body case is attached. In a vacuum cleaner that remotely operates an electric motor in the main body case by electrical connection between a remote circuit and a hose side remote circuit provided in the hose, when the hose is not connected to the suction port, the dust collection chamber Side and the outside of the main body case, the shutter provided inside the main body case and above the suction port, and the hose attached to and detached from the inside of the shutter and inside the main body case near the suction port A connecting body for holding freely and freely rotatable by 360 degrees is provided. An elastic body valve for covering the suction port of the main body case when the hose is not connected to the connecting body, and a connecting body for connecting the hose are provided. And over Graphics and rotation tool for integrally rotating,
Providing a pair of conductive plates provided in parallel with this rotating tool,
The pair of conductive plates are symmetrical to each other with elastic contact points that are symmetrical with respect to the center of rotation of the rotating tool and symmetrical with respect to a center line passing through the center of rotation, and have a sandwiching center on the center line. Two opposing contact plates sandwiched by the elastic body contacts are provided in the main body case, and when connecting the hose and the connection body, the wiring of the hose side remote circuit and the main body side electric motor are connected via the conductive plate. It is a thing.

[Action]

In this invention, the shutter provided inside the main body case and above the suction port functions to separate the dust collecting chamber from the outside of the main body case when the dust suction hose is not connected.
In addition, the connecting body holds the dust suction hose in the suction port in a detachable and rotatable manner, and opposes the conductive plate and the connecting body provided on the outer periphery of the rotating tool with respect to the center of rotation, and further from the left and right sides. It makes contact with the sandwiched contact plate and works to connect the main case remote circuit and the hose remote circuit.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. In the figure, reference numeral 1 denotes an upper and lower cases 2 and 3, which is a flat main body case having a handle 4 in the front and an exhaust port 5 in the rear, and which contains an electric blower 6 and a cord reel (not shown). . Reference numeral 7 denotes a plurality of support legs provided on the rear surface of the main body case 1, and has an auxiliary exhaust port formed therein. Reference numeral 8 denotes a bumper sandwiched between the joint surfaces of the upper and lower cases 2 and 3, which keeps the joint surfaces airtight. Reference numerals 9 and 10 denote casters and wheels for moving the main body case 1, and 11 denotes an electric blower 5 of the main body case 1.
In the dust collecting chamber formed on the suction side of the main body case 1, a dust outlet 12 is opened on the upper surface of the main body case 1. Reference numeral 13 denotes an opening / closing lid that covers the dust outlet 12 of the dust collection chamber 11, the rear end of which is pivotally supported by the body case 1 and the front end of which is locked by the latch 15. Reference numeral 16 is a hinnel spring for urging the opening / closing lid 12 in the opening direction, 17 is a suction port provided on the upper surface of the opening / closing lid 13, and a recess 1 for accommodating a later-described shutter knob on a part of the inner peripheral edge thereof.
8 forming. Reference numeral 19 denotes an inner lid that is processed to form a predetermined space 20 on the lower surface of the opening / closing lid 13, and has a communication hole 21 formed facing the suction port 17. Reference numeral 22 denotes a connection body of a dust suction hose, which will be described later, arranged in the space 20 so as to face the suction port 17, and is rotatably attached to a frame plate 22a fixed to the inner lid 19 and an upper surface of the frame plate. An annular suction port plate 26 and a rotating tool 25 which is concentrically fixed to the suction port 17 so as to sandwich the frame plate from the lower surface of the frame plate 22a and which is provided by winding a pair of conductive plates 23 and 24 in parallel on the peripheral surface. It consists of and.

Reference numeral 27 is a check valve made of a soft rubber material having radial slits, which is sandwiched between the rotating tool 25 and the suction port plate 26.
Numeral 28 is a packing for air-tightly connecting between the rotating tool 25 and the peripheral portion of the communication hole 21 of the inner lid 19, and 29 and 30 are bifurcated springs which are in contact with the conductive plates 23 and 24 of the rotating tool 25 respectively. These contact plates are arranged to face each other with the rotating tool 25 interposed therebetween, and are connected to the remote circuit on the main body case 1 side by the lead wires 31 and 32. Reference numeral 33 denotes a dust collecting filter box arranged in the dust collecting chamber 11. The peripheral portion of the dust collecting outlet 12 is airtightly held between the inner edge of the dust outlet 12 and the inner lid 19 via a packing 34. 35 is a filter box 33
With a disposable paper bag filter disposed inside, a mount 37 having a suction port 36 is attached to the opening. Reference numeral 38 is a dust suction hose composed of a flexible hose 39 and a bent pipe 40 fixed to the end of the flexible hose. The hose is formed by inserting the bent pipe 40 into the connector 22 from the suction port 17. When held, the suction port plate 26 is engaged and held. At this time, the tip end of the bent pipe 40 pushes open the check valve 27, and further through the communication hole 21 of the inner lid 19, is inserted into the inside from the suction port 36 of the paper bag filter 35 and is formed in the hose. Are connected to a pair of contact plates 41, 42 provided on the suction port plate 26. The pair of contact plates 41 and 42 are electrically connected to the pair of conductive plates 23 and 24 in advance. Reference numeral 43 denotes a shutter that opens and closes the suction port 17, and is arranged between the opening / closing lid 13 and the connection body 22 so as to be slidable in the horizontal direction. A knob 44 is provided on the upper surface of the shutter 43, and a pair of engaging projections 45 having a spring property.
45 is provided, and the engagement protrusion is provided on the shutter 43.
When the shutter is opened or closed, it engages with the engaging projections 46 and 47 provided on the opening / closing lid 13, while the knob 44 is located in the recess 18 of the suction port 17 when the shutter 43 is closed. ing.

The operation will be described in the above embodiment. Suction port 1
When the dust suction hose 38 is not connected to 7, the suction port 17 is closed by the shutter 43. At this time, shutter 4
3, the engaging projections 45 and 47 are engaged with each other to maintain the closed state. Next, when the shutter 43 is opened, the other engaging projections 45 and 46 are engaged with each other to maintain the open state,
When the bent pipe 40 of the hose 38 is inserted through the suction port 17, the tip of the bent pipe 40 is inserted into the suction port 36 of the paper bag filter 35, and at the same time, the remote circuit formed on the hose 38 forms a pair of contact plates 41, 42. Connected. That is, the remote circuit of the hose 38 is connected to the remote circuit of the main body case 1 through the pair of conductive plates 23, 24 contact plates 29, 30. The bent pipe 40 freely rotates in the horizontal direction by the suction port plate 26 of the connection body 22, but the conductive plates 23, 24 and the contact plates 29, 3 are not rotated.
In 0, the contact state is always maintained, and the remote circuit can maintain the closed state as it is. Therefore, the operation of the electric blower 6 can be controlled by the remote circuit. When the electric blower 6 is operated in this manner, the dust sucked from the floor brush (not shown) attached to the hose 38 will not move to the flexible hose 3
9 and through the bent pipe 40 are sucked into and caught in the paper bag filter 35.

The dust-removed airflow is further filtered by the filter box 33, and then discharged from the exhaust port 5 to the outside through the electric blower 6. When the paper bag filter 35 is filled with dust, the bent pipe 40 is removed from the suction port plate 26 of the connector 22, the shutter 43 is closed, the latch 15 is removed, the opening / closing lid 13 is opened, and the paper bag filter 35 is placed in the dust collection chamber 11. Take it out and throw it away. After that, a new paper bag filter is set in the dust collection chamber 11.

Thus, in the present invention, the dust suction hose 3
Since 8 is rotatably connected to the suction port 17 of the body case 1, the side and rear of the body case 1 can be easily cleaned without changing the direction of the body case 1 and without twisting the hose 38. be able to. Further, even if the hose 38 rotates, the remote circuit is always electrically connected between the hose 38 and the main body case 1. Therefore, the electric blower 6
There is no problem with driving. On the other hand, since the rotating tool 25 is held so as to be held from both sides by the contact plates 29 and 30 having the elasticity which are opposed to each other, the rotating tool 25 always rotates stably and the conductive plates 23 and 24 and the contact plates 29 and 30 are kept. Problems such as separation will not occur.

[Advantages of the Invention] As described above, according to the present invention, the rotation mechanism provided above the main body case can prevent the hose from twisting during cleaning, for example, and it is very easy to clean, so that the hose does not have an excessive force. Not easily damaged.

In addition, it is hygienic because dust is prevented from scattering from the suction port to the outside of the main body.

Also, when the hose is removed, or when the shutter separates the suction port from the outside of the main body case, it prevents the rotating mechanism and the electrical contact mechanism from being contaminated by dust from the dust collection chamber, and further prevents damage and distortion. Has excellent durability because it prevents the occurrence.

Further, since the elastic valve body is interlocked with the rotation of the hose, the load due to the rotation is hard to be applied, and the elastic valve body is not easily damaged.

Further, since the connection body is sandwiched from the outside so as to be opposed to each other, there is an effect that the connection is well balanced with respect to the rotation direction around the suction port of the hose, and the contact is reliable and smooth.

[Brief description of drawings]

FIG. 1 is an external side view showing an electric vacuum cleaner according to an embodiment of the present invention, FIG. 2 is a sectional view of an essential part, FIG. 3 is a top view of a connecting body, and FIG. 4 is a sectional view of the connecting body. is there. 1 is a main body case, 11 is a dust collection chamber, 17 is a suction port, 22 is a connection body, 23 and 24 are conductive plates, 25 is a rotating tool, 29 and 3
Reference numeral 0 is a contact plate, and 38 is a dust suction hose.

Claims (1)

[Scope of utility model registration request] 1. A main body case has a suction port communicating with a dust collection chamber, a dust suction hose is detachably connected to the suction port, and a main body side remote circuit provided in the main body case, In an electric vacuum cleaner that remotely controls an electric motor in the main body case by electrical connection with a hose side remote circuit provided in the hose, when the hose is not connected to the suction port, the dust collection chamber side and the main body A shutter provided inside the main body case to partition the outside of the case and above the suction port, and to the inside of the shutter and inside the main body case in the vicinity of the suction port, the hose is detachable and 360 °. Equipped with a connection body that holds it rotatably,
An elastic valve that covers the suction port of the main body case when the hose is not connected to the connecting body, a rotating tool that rotates integrally with the hose when the hose is connected, and a parallel provided to the rotating tool. A pair of conductive plates are provided, elastic contact points are symmetrical with respect to the rotation center of the rotating tool and symmetrical with respect to a center line passing through the rotation center, and there is a sandwiching center on the center line. Two facing contact plates sandwiching a pair of conductive plates with the symmetrical contact of the elastic body are provided in the main body case, and when connecting the hose and the connection body, the wiring of the hose side remote circuit and the main body side electric motor are connected. An electric vacuum cleaner, which is connected through the conductive plate.