JP2583975B2 - Electric vacuum cleaner - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vacuum cleaner having a shutter for opening and closing a suction port of a rotating body into which a hose is inserted.

(Prior Art) Conventionally, as described in, for example, Japanese Utility Model Application Laid-Open No. 60-94152, a rotating body is rotatably supported by a lid that covers the dust collection chamber of the cleaner body from the top so as to be openable and closable. The rotary body is provided with a suction port through which a bent one end of the hose is removably inserted, and a shutter body that closes the suction port so that it can be opened and closed is slidable between the rotary body and the lid. There is a known vacuum cleaner. The reason why the suction port is provided in the rotating body is to improve the operability of the hose, and the shutter body is to prevent dust from spilling out of the suction port. And since this kind of conventional vacuum cleaner has a structure in which the rotating body can rotate regardless of the position of the shutter body, even if the shutter body is opened and closed after the hose is pulled out from the suction port, the rotating body is opened. , Ie, the rotation angle does not change. Further, even when the shutter body is closed, the rotating body may rotate due to the impact.

By the way, generally, the hose and the suction port are provided with detachable clamps and locking portions for maintaining the connection state between the hose and the suction port, or detachable electric connection portions on the outer peripheral portion, respectively. Is provided. Therefore, the connectable circumferential positional relationship between the hose and the suction port is restricted.

However, in the above-described conventional vacuum cleaner in which the suction port is provided in a rotatable rotating body, when the hose is inserted, the position of the rotating body is not fixed, so that the circumferential positioning of the hose and the rotating body is performed. However, it is difficult to insert a hose, which is inconvenient. Further, when the insertion portion of the hose to the suction port is bent, if the position of the rotating body is not fixed as described above, the insertion of the hose becomes more complicated. For example, if the user pulls out the hose from a lateral direction other than the position facing the front of the cleaner body, the position of the rotating body remains the same as when the hose was last pulled out at the next use, It is very troublesome to insert a hose from the front.

Also, for example, in a conventional vacuum cleaner in which a rotary brush driving motor is provided in a suction port connected to a hose, and a main body side contact for relaying a power supply line from the cleaner main body to the motor is provided in the rotating body, Regardless of whether the hose with the hose-side contact that contacts the body-side contact is connected to the suction port, when the power cord of the cleaner body is connected to a 100 V AC power source, the body-side contact is always electrically connected to this power source. This is a structure that is connected to For this reason, when the power cord is connected to the power supply, the hose is not connected to the suction port, and the shutter body is not closed, the body-side contacts electrically connected to the power supply are exposed externally. And there is a danger of a short circuit.

(Problems to be Solved by the Invention) As described above, in the conventional vacuum cleaner provided with the suction port to which the hose is connected to the rotating body, the position of the rotating body is not fixed, so that it is difficult to insert the hose. There's a problem.

Such a problem can be solved if the rotating body returns to a certain position after the hose is pulled out. As a structure for returning the rotating body to a certain position, the structure shown in FIG. 10 or FIG. 11 can be considered.

In the vacuum cleaner shown in FIG. 10, the rotating shaft of a rotating body 104 which is rotatably supported by a lid body 102 constituting the cleaner body 101 and has a suction port 103 is inclined with respect to a vertical direction. The weight body 105 is provided on the outer peripheral portion of the rotating body 104 that is deviated from the rotation axis. Then, when the hose is pulled out from the suction port 103, the rotating body 104 is automatically and immediately returned to a fixed position by the load of the weight body 105, that is, the weight body 105 is returned to the most lowered position. .

In the vacuum cleaner shown in FIG. 11, the weight 105 of the vacuum cleaner shown in FIG. 10 is formed as a magnet, and a weight is attached to a support 106 which forms a part of the lid 102 and supports the rotating body 104. When the weight 105 is lowered most, an iron piece or a magnet 107 is provided at a position facing the weight 105 so that the rotating body 104 that has returned to a predetermined position by its own weight does not perform a pendulum motion, but is reliably positioned.

However, in the structures shown in FIGS. 10 and 11, it is necessary to consider the instability of the frictional resistance, and the rotating body 104 does not rotate without a sufficiently heavy weight 105. Incorporation of the 105 is difficult. Further, the weight balance of the rotating body 104 may be deteriorated, and the operability of the hose may be impaired.

Also, in a conventional vacuum cleaner having a contact point on a rotating body,
Since the structure is such that the contacts are electrically connected to the power supply even when the hose is not connected, there is a problem in safety.

SUMMARY OF THE INVENTION The present invention is intended to solve the above-described problems, and it is possible to reliably and easily return a rotating body to a predetermined position after removing a hose, and to connect a hose to a suction port provided in the rotating body. It is an object of the present invention to provide an easy-to-use vacuum cleaner that can be easily inserted. It is another object of the present invention to provide a vacuum cleaner in which a shutter body that opens and closes a suction port has good operability. It is another object of the present invention to provide a vacuum cleaner that prevents short-circuiting of electrical contacts provided on a rotating body.

(Means for Solving the Problems) The electric vacuum cleaner according to claim 1, wherein an electric blower and a dust collecting chamber communicating with a negative pressure side of the electric blower are provided inside, and an outside opening facing the dust collecting chamber and the electric motor are provided. A cleaner main body provided with an exhaust port opened to the outer surface communicating with the positive pressure side of the blower, and the cleaner main body rotatably supported inside the outer opening and communicating the dust collection chamber to the outside A rotary body having a suction port and a locking portion, and a slidably supported between the rotary body and the cleaner main body along an outer surface substantially perpendicular to a rotation axis direction of the rotary body. A shutter body that covers the outer surface of the rotating body so as to be openable and closable, and a locking means that is removably locked to a locking portion of the rotating body, one end of which is detachably inserted into the suction port of the rotating body; Equipped with a hose that is
The rotating body includes a projection at a position deviated from a rotating shaft on an outer surface, the projection being in contact with a leading edge in a sliding direction of the shutter body.

According to a second aspect of the present invention, in the vacuum cleaner of the first aspect, the shutter body has a concave portion which is detachably engaged with the projection of the rotating body when the shutter body is completely closed. It is provided.

According to a third aspect of the present invention, in the vacuum cleaner according to the first or second aspect, the main body side contact provided in the rotating body and electrically connected to a power supply, and the main body side contact provided in a hose. A hose-side contact that is freely contactable and detachable, and the protrusion is urged outward from the outer surface of the rotating body by an elastic body and is provided so as to be able to protrude and retract at a position where the hose comes into contact with the insertion direction, The rotating body integrally includes a switch electrically connected between the main body side contact and a power supply, and a switch opening / closing mechanism that opens the switch when the projection is projected from the projection and closes the switch when the projection is immersed. It is provided for the purpose.

(Operation) In the vacuum cleaner according to the first aspect, when the hose is not inserted into the suction port of the rotating body, the shutter body is slid along the outer surface of the rotating body substantially orthogonal to the rotation axis during non-cleaning. Then, the leading edge in the sliding direction of the shutter body pushes a projection at a position off the rotation axis on the outer surface of the rotating body, and rotates the rotating body to a position where the projection has advanced to the maximum in the sliding direction. The body covers the outer surface of the rotating body and closes the suction port, and the rotating body is in a fixed position and faces in a fixed direction when the shutter is closed, regardless of the position before closing the shutter. Further, at the time of cleaning, at the same time as sliding the shutter body to start sliding the shutter body, the shutter body separates from the projection of the rotating body, the position of the rotating body remains at a fixed position, and the opened rotating body is opened. One end of the hose is inserted into the suction port while the locking means is locked to the locking portion.

In the vacuum cleaner according to claim 2, in the vacuum cleaner according to claim 1, when the shutter body is closed, when the shutter body is completely closed, a recess on the inner surface of the shutter body is formed on the projection of the rotating body. Engagement provides a click sensation, and the engagement of the projection with the recess ensures that the shutter body and the pivoting body are held in place. Also, when the shutter body is opened, at the same time as the shutter body starts to be opened, the concave portion comes off from the projection, and a click feeling is obtained.

According to a third aspect of the present invention, in the vacuum cleaner according to the first or second aspect, when a hose is inserted into the suction port of the rotating body, the hose-side contact comes into contact with the main body-side contact in the rotating body. Then, the hose presses the projection of the rotating body from the insertion direction, and this projection is immersed, and the switch opening / closing mechanism integrated with this projection closes the switch between the main body side contact and the power supply. When the hose is pulled out from the suction port, the hose-side contact is separated from the main-body-side contact, and the hose is separated from the projection. The projection is projected by the urging force of the elastic body, and the switch is opened.

(Embodiment) Hereinafter, the configuration of an embodiment of the vacuum cleaner of the present invention will be described with reference to FIG. 1 to FIG.

Reference numeral 1 denotes a vacuum cleaner main body. The vacuum cleaner main body 1 includes a main body case 3 having an opening 2 formed in an upper part on the front side, and a main body case 3
And a lid 4 that is pivotally mounted at the rear end to open and close the opening 2. Further, the main body case 3 includes a lower main body case member 5.
And an upper body case member 6 fixedly connected to the upper side of the lower body case member 5.

The interior of the main body case 3 is divided into front and rear by a partition wall 12 formed at a substantially central portion thereof and having a communication port 11, and an electric blower 13 is disposed in a space behind the partition wall 12. A space in front of the partition wall 12 has the opening 2 on the upper surface and defines a dust collecting chamber 14 located on the negative pressure side of the electric blower 13. An exhaust port 15 communicating with the positive pressure side of the electric blower 13 is formed on the rear surface of the main body case 3. In the cleaner main body 1, a high-performance exhaust filter 16 made of glass fiber or the like is mounted between the electric blower 13 and the exhaust port 15, and a sponge-shaped filter covering the exhaust port 15 is provided. Sub exhaust filter
17 is installed. Also, inside the body case 3,
A cord reel that winds and houses a power cord (not shown) that is connected to an AC power source and is located at a side of the electric blower 13 is rotatably provided.

On the other hand, the lid 4 is formed in a thin box shape with an open lower surface, and a main body clamp 22 urged by a spring 21 is pivotally attached to the front end of the lid 4. And this body clamp
22 is a locking part 23 formed at the upper end of the front surface of the main body case 3.
And the lid 4 is held in a closed state.

Further, an inclined surface 26 descending forward is formed on the front side of the upper surface of the lid 4, and an upper opening 27 as a circular outer opening is formed on the inclined surface 26. An inner wall 28 is fixed to the lower surface of the lid 4 substantially in parallel with the upper surface of the lid 4 by screws or the like.
Is formed in a lower opening 29 opposed to the above. Further, a support 30 is fixed in a space between the inclined surface 26 and the inner wall 28,
The support 30 has an intermediate opening 31 that faces the upper opening 27 and the lower opening 29, respectively.

On the other hand, reference numeral 36 denotes a rotating body. The rotating body 36 is located between the inclined surface 26 and the inner wall 28 and is rotatably supported by the support 30. That is, the rotating body 36 has a substantially disk-shaped upper rotating body member 38 and a lower rotating body member 39 which are fixedly connected by screws 37 or the like. The upper rotating body member 38 and the lower rotating body member 39 are provided. Is rotatably slidably sandwiched between the peripheral portion of the intermediate opening 31 of the support 30.

The upper rotating body member 38 has an upper opening 27 of the lid 4.
Is formed so as to protrude downward. On the other hand, the cylindrical lower rotating member 39 has an inlet 41
And a cylindrical tubular portion 42 facing the lower opening 29 of the cover 4 is formed to protrude downward.

Further, a freely openable and closable suction port valve body 43 is hermetically mounted between the suction port 41 and the tubular portion 42. A seal packing 44 is attached to the peripheral edge of the lower opening 29 of the lid 4, and the tip of the tubular portion 42 is pressed against the seal packing 44 in an airtight and slidable manner.

In addition, a concave portion 46 is formed at an upper portion of the upper rotating body member 38 so as to be continuous with the suction port 41, and a locking hole 47 as a locking portion is formed on an outer peripheral portion of the concave portion 46.

On the other hand, a pair of ring contacts 48, 4
8 are fixed, and these ring-shaped contacts 48, 48 are slidably contacted with a pair of fixed contacts 50, 50 fixed to the inner wall 28 with screws 49, respectively. These fixed contacts 50, 50 are electrically connected to a power cord via a power supply line (not shown). Further, a pair of main body side contacts 52, 52 are located in the rotating body 36, facing the pair of insertion holes 51, 51 formed on the upper surface of the upper rotating body member 38 opposite to the concave portion 46, respectively. The rib 53 formed on the side rotating body member 39,
53 respectively fixed. The body-side contacts 52, 52 are electrically connected to the ring-shaped contacts 48, 48 via power supply lines (not shown).

Further, a pair of ring-shaped contacts 5 is also provided on the peripheral surface of the rotating body 36.
4, 54 are fixed, and these ring-shaped contacts 54, 54
Each of the pair of contacts is slidably contacted with a pair of fixed contacts (not shown) fixed to zero. And these fixed contacts are
It is electrically connected to a control circuit of an electric blower 13 provided in the cleaner main body 1 via a signal line (not shown).
Further, a pair of main body side contacts 56, 56 are fixed in the rotating body 36 by ribs 57, 57 formed in the lower rotating body member 39, respectively, facing the concave grooves 55 formed near the concave portion 46. ing. The body-side contacts 56, 56 are electrically connected to the ring-shaped contacts 54, 54 via signal lines (not shown).

A substantially cylindrical projection 59 is formed on the upper surface of the upper rotating body member 38, that is, on the outer peripheral edge of the outer surface, in the vicinity of the insertion hole 51, and the upper end of the projection 59 has a hemispherical shape. Part 60.

Further, between the inclined surface 26 of the lid body 4 and the rotating body 36, a flexible substantially rectangular shutter body 61 that closes the upper opening 27 so as to be openable and closable is slidably supported. The shutter body 61 is slidable in the front-rear direction along an outer surface of the rotating body 36 that is orthogonal to the rotation axis, that is, the center axis, of the rotating body 36. It comes into contact with the projection 59 from behind. At the center of the front edge of the shutter body 61, a knob 62 always located in the upper opening 27 is formed so as to protrude upward.
Inside, there is formed a recess 63 which is opened on the lower surface, that is, the inner surface of the shutter body 61 and is engaged with the projection 59 of the rotating body 36 so as to be detachably engaged therewith. Further, a convex portion 64 is formed in the vicinity of the lower portion of the knob 62 and in the center of the front edge of the shutter body 61, having a semicircular planar shape projecting forward and abutting on the projection 59.

In the dust collecting chamber 14 of the main body case 3, the inner wall of the lid 4 is provided.
An almost U-shaped holding plate facing 28 with a small gap
66 is fixed.

On the other hand, 67 is a dust bag made of paper or the like.
Has a bag-shaped filter material 68 and a mouth frame 69 provided on the opening side of the filter material 68 and having an opening. The dust collecting bag 67 is detachably mounted in the dust collecting chamber 14 with its mouth frame 69 held by the holding plate 66 and the opening of the mouth frame 69 facing the suction port 41. The dust chamber 14 can enter and exit through the opening 2 of the dust chamber 14.

Further, on the front surface of the partition wall 12 of the main body case 3, a sub-dust filter 70 is detachably mounted.

On the other hand, reference numeral 71 denotes a hose. The hose 71 has a bellows-shaped and bendable hose body 72, and is provided at one end of the hose body 72 so that the tip thereof can be freely inserted and removed from the suction port 41 of the cleaner body 1. A bent cylindrical connection pipe 73 to be attached and a hose body 72
And a gripping tube (not shown) provided at the other end of the gripper.

The connection between the hose body 72 and the connection pipe 73 is covered by a cover 74 whose lower end is fitted into the upper opening 27 of the lid 4. A box-shaped part 75 to be fitted into the concave part 46 of the 36 is vertically provided integrally.
A clamp 76 is movably supported by the cover 74 as a locking means which is urged by a spring (not shown) and is removably engaged with and locked by the locking hole 47 of the rotating body 36. Further, a pair of hose-side contacts 77 are provided on the lower end surface of the cover body 74 of the hose 71 and located on the opposite side of the box-shaped portion 75 and are in contact with the pair of body-side contacts 52 so as to be able to freely contact and separate from each other. And
These contacts 77 are electrically connected to a power supply line (not shown) provided in the hose 71. Also, near the box-shaped portion 75, a pair of hose-side contacts (not shown) are provided so as to be able to freely contact and separate with another pair of body-side contacts 56, respectively. These contacts are electrically connected to a hand operation unit provided on the grip tube via a signal line (not shown) provided in the hose 71.

Further, a suction port body is detachably connected to the gripping pipe of the hose 71 via an extension pipe (not shown). A rotary brush (not shown) and an electric motor for driving the rotary brush are provided in the suction port. The electric motor is electrically connected to a power supply line of a hose via a power supply line provided in the extension pipe.

 Next, the operation of the above embodiment will be described.

When the hose 71 is not inserted into the suction port 41 of the rotating body 36 at the time of non-cleaning, the outer surface of the rotating body 36 is covered by the shutter body 61 and the suction port 41 is closed. To close the shutter body 61 in this manner, the knob 62 is pinched and the shutter body 61 is closed.
Slide forward. At this time, regardless of the position of the projection 59 of the rotating body 36, that is, regardless of the position of the rotating body 36, the front edge 61a of the shutter body 61 abuts the projection 59 sometime from behind. When the projection 59 is pushed by the shutter body 61, as shown by an arrow in FIG.
However, the projection 59 rotates in the direction in which the projection 59 moves forward, and finally the projection 59 reaches the position in which the projection 59 has moved forward to the maximum, and the rotation stops. Here, when the shutter body 61 is further slid forward, the front edge of the shutter body 61 elastically passes over the projection 59, and as shown in FIG. The recess 63 on the back side of the edge is engaged. At that time, a click feeling is obtained.

Thus, regardless of the position of the rotating body 36 before closing the shutter body 61, that is, regardless of the direction in which the rotating body 36 faces, the rotating body 36 is at a fixed position with the shutter body 61 closed. Moreover, since the rotating body 36 is linked to the shutter body 61 for closing the suction port 41, the rotating body 36 can be reliably and easily returned to a fixed position.

By the way, assuming that the front edge 61a of the shutter body 61 is completely flat, the projection 59 is located at the rearmost position at the beginning, that is, on a straight line passing through the rotation axis of the rotation body 36 and parallel to the sliding direction of the shutter body 61. In such a case, the shutter body 61 may not move when the shutter body 61 contacts the projection 59. However, in practice, if the projection 59 was initially located at the rear most,
Since the semicircular projection 64 at the center of the front edge of the shutter body 61 first comes into contact with the substantially cylindrical projection 59, the rotating body 36 starts to rotate smoothly, and finally, The rotating body 36 reaches a certain position.

Further, since the projection 59 has a substantially cylindrical shape and has a hemispherical portion 60 at the tip, the shutter body 61 and the rotating body 36 move smoothly, and wear is small.

The engagement between the projection 59 and the concave portion 63 ensures that the shutter body 61 is held at the closed position, and the rotating body
36 is securely held at the position where the protrusion 59 is most advanced. Therefore, in a state where the shutter body 61 is closed, even if an external impact is applied, the rotating body 36 does not unnecessarily rotate.

On the other hand, when cleaning, first pull the knob 62 and
61 is slid backward and opened as shown by the arrow in FIG. At that time, as soon as you start opening the shutter body 61,
The recess 63 of the shutter body 61 comes off from the projection 59 of the rotating body 36,
Click feeling is obtained. In this manner, a click feeling is obtained when the shutter body 61 is opened and when the shutter body 61 is closed as described above, so that the operation feeling of the shutter body 61 is crisp and easy to use. After the concave portion 63 comes off from the projection 59, the shutter body 61
Therefore, even if the shutter 61 is opened, the position of the rotating body 36 remains at the position where the projection 59 is most advanced.

Next, with the cover body 74 of the hose 71, the distal end side of the bent connection pipe 73 is inserted into the suction port 41 of the opened rotating body 36. With this insertion, the clamp 76 of the hose 71 is
It is engaged with the locking hole 47 of 36. Further, the hose-side contact 78 for the power supply line is inserted into the insertion hole 51 of the rotating body 36 to come into contact with the body-side contact 52 for the power supply line, and the hose-side contact for the signal line is connected to the concave groove of the rotating body 36. It is inserted through 55 and comes into contact with the main body side contact 56 for the signal line. At this time, since the rotating body 36 is always at a fixed position, that is, the position where the protrusion 59 is most advanced, the circumferential positioning of the connection pipe 73 and the suction port 41, that is, the box-shaped portion 75 and the hose on the connection pipe 73 side are performed. The positioning of the side contact 78 with the concave portion 46 of the rotating body 36 and the main body side contacts 52, 56 does not become complicated, and the connecting pipe 73 can be easily inserted in a fixed positional relationship at all times. Is good.

Also, a suction port body is connected to the gripping pipe of the hose 71 via, for example, an extension pipe.

And when cleaning with the grip tube, the electric blower 13
Dust is sucked through the suction port body and is stored in the dust collecting bag 67 via the extension pipe and the hose 71. At this time, since the rotating body 36 can be rotated, that is, the hose 71 can be freely rotated, the cleaning can be performed easily. In addition, power is supplied to the electric motor of the suction port body through a power supply cord connected to an AC power supply and a power supply line relayed by a fixed contact 50, a ring-shaped contact 48, a main body-side contact 52, a hose-side contact 78, and the like. Dust is scraped out of the carpet by driving the brush. Further, the electric blower 13 can be controlled by operating a hand-operated operation unit connected to a control circuit via another fixed contact and a ring-shaped contact 54, a body-side contact 56, and a signal line relayed by a hose-side contact. .

After cleaning, the connection pipe 73 is pulled out from the suction port 41 while operating the clamp 76 of the hose 71 to remove the connection pipe 73 from the locking hole 47 of the suction port 41, and then the shutter body 61 is closed.

Next, another embodiment of the present invention will be described with reference to FIGS.

A sliding body 82 also serving as a switch opening / closing mechanism is fitted and supported in a rectangular tubular portion 81 formed on the upper rotating body member 38 at an outer peripheral portion inside the rotating body 36 so as to be vertically slidable. A projection 59 integrally formed on the upper surface of the sliding member 82 is formed.
However, it protrudes outward and freely through a through-hole 83 opened at a position where the lower end surface of the cover body 74 of the hose 71 abuts on the upper surface of the upper rotating body member 38. Also, the sliding body 82
A spring 85 as an elastic body is mounted between a boss 84 formed on the lower surface of the sliding body 82 and the bottom surface of the lower rotating body member 39.
As a result, the projection 56 is always urged in the direction in which the projection 56 projects.

Further, a pair of movable contacts 86 and 87 are fixed to both side surfaces of the sliding body 82 parallel to the sliding direction. On the other hand, a pair of fixed contacts 88, 89 which are respectively in contact with the respective movable contacts 86, 87 when the projection 59 is immersed and separate from the respective movable contacts 86, 87 when projecting are provided on the corresponding both side surfaces in the rectangular tubular portion 81. Fixed. That is, these movable contacts 86 and 87 and fixed contact 8
8 and 89 constitute normally open switches 90 and 91, respectively. Then, the two movable contacts 86, 86 are electrically connected to the ring contacts 48, 48 for the power supply line via a power supply line (not shown), respectively, and the two fixed contacts 88 contacted with the movable contacts 86, 86. , 88 are the lead wires 9 on the main body side contact 52 for the feed line.
Each of them is electrically connected via a feed line composed of two. Further, the other two movable contacts 87, 87 are electrically connected to the ring-shaped contacts 54, 54 for the power supply line via signal lines (not shown), respectively, and the other two movable contacts 87, 87 contact the movable contacts 87, 87. The two fixed contacts 89, 89 are electrically connected to the main body side contact 56 for the signal line via a signal line composed of a lead wire 93, respectively. The pair of movable contacts 86 and 87 located on the same side surface of the sliding member 82 are isolated by insulating ribs 94 and 95 formed on the side surface of the sliding member 82.

Then, when the hose 71 is inserted into the suction port 41 of the rotating body 36, the hose-side contacts 77, 77 are brought into contact with the body-side contacts 52, 56, and as shown in FIG.
The lower end surface of the sliding body 82 presses the projection 59 from the insertion direction, the sliding body 82 descends against the urging force of the spring 85, the projection 59 sinks, and the movable contacts 86, 87 of the sliding body 82 81 fixed contacts 8
8 and 89, respectively, and switches 90 and 91 close. In this state, through the switch 90, the main body side contacts 52, 52 for the power supply line are connected to the ring-shaped contacts 48,
The ring-shaped contacts 54, 54 connected electrically to the control circuit 48 as a power source in the cleaner main body 1 while being electrically connected to the switch 48 and through a switch 91.
Is electrically connected to

When the hose 71 is pulled out from the suction port 41, as shown in FIG. 9, the hose side contacts 77, 77 are separated from the main body side contacts 52, 56, and the cover body 74 of the hose 71 is separated from the projection 56,
The sliding body 82 rises due to the urging force of the spring 85 and
59 protrudes, the movable contacts 86 and 87 of the sliding body 82 are separated from the fixed contacts 88 and 89 of the rectangular tubular portion 81, and the switches 90 and 91 are opened. In this state, the main body side contacts 52, 56 are electrically disconnected from the ring-shaped contacts 48, 54 closer to the power supply.

Therefore, even if the shutter body 61 is kept open, there is no danger of a short circuit or the like, which is safe. That is, a child inserts a conductive foreign substance such as a pin into the insertion hole 51 or the concave groove 55 by mischief or the like, and this foreign substance is
, There is no danger of a short circuit or the like because these main body side contacts 52 and 56 are cut off from the power supply.

It is to be noted that a short circuit or the like particularly poses a problem in the power supply line, and the switch 90 may be provided only in the power supply line.

Further, according to the above configuration, since the protrusion 59 can be immersed,
The engagement and disengagement between the projection 59 and the concave portion 63 of the shutter body 61 also becomes smoother.

(Effect of the Invention) According to the vacuum cleaner of the first aspect, the rotary body having the suction port into which the hose is inserted is located on the outer surface substantially orthogonal to the rotary axis and at a position deviated from the rotary axis. Since a projection is provided to abut on the leading edge in the sliding direction of the shutter body that slides along the outer surface, when the shutter body is closed, the rotating body rotates and returns to a certain position, thereby closing the shutter body. When the hose is inserted by re-opening the locking means on the locking portion of the rotating body and inserting the hose, the hose may be always inserted into the suction port of the rotating body at a fixed position, and the hose may be locked. The hose can be easily inserted without complicating the circumferential positioning of the hose and the suction port for engaging the means with the locking portion of the rotating body, the usability is good, and the rotating body is attached to the shutter body. Are linked, so there is no need for special The rotating body can be easily and reliably returned to a fixed position.

According to the vacuum cleaner of the second aspect, in addition to the effect of the vacuum cleaner of the first aspect, a concave portion is provided on the inner surface of the shutter body, the concave portion being engaged with the projection when the shutter body is completely closed. When opening and closing the shutter body, a click feeling is obtained due to the engagement and disengagement of the recess and the projection, and the operability of the shutter body is improved, and the shutter body and the rotating body are held at a fixed position by the engagement of the recess and the projection. Thus, when the shutter body is closed, the rotating body does not rotate unnecessarily, and the rotating body can be reliably held at a fixed position.

According to the vacuum cleaner of the third aspect, in addition to the effects of the vacuum cleaner of the first or second aspect, the projection is urged outward and outward from the outer surface of the rotating body at a position where the hose comes into contact. A switch is provided between the power supply and the main body side contact where the hose side contact is brought into contact with the rotating body,
A switch opening / closing mechanism that opens and closes the switch when the protrusion is protruding from the protrusion and closes when the protrusion is immersed, so that even if the body contacts the contact when the hose is not inserted, short-circuiting etc. There is no danger and safety is improved.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the vacuum cleaner of the present invention,
FIG. 2 is an exploded perspective view of the rotating body part, FIG. 3 is a lower perspective view of the same shutter body, FIGS. 4 and 5 are operation explanatory perspective views of the rotating body part, and FIG. FIG. 7 is a cross-sectional view of the vicinity of the protrusion in a closed state, FIG. 7 is a perspective view of a rotary body showing another embodiment of the present invention, and FIG. 8 and FIG. FIGS. 10 and 11 are a perspective view and a sectional view, respectively, of a rotating body portion showing an example of a vacuum cleaner considered to have the same purpose as the present invention. 1 ... vacuum cleaner body, 13 ... electric blower, 14 ... dust collection room,
15 ... exhaust port, 27 ... upper opening as outer opening, 36 ...
... Rotating body, 41 ... Suction port, 47 ... Locking hole as locking section, 52 ... Main body side contact, 56 ... Main body side contact, 59 ... Protrusion, 61 ... Shutter body, 63 ... Recess, 71 …… Hose,
76: clamp as locking means, 77: hose side contact, 82: sliding body as switch opening / closing mechanism, 85: spring as elastic body, 90: switch, 91: switch.

Claims (3)

(57) [Claims] An electric blower and a dust collecting chamber communicating with a negative pressure side of the electric blower are provided therein, and an outer opening facing the dust collecting chamber and an exhaust port communicating with the positive pressure side of the electric blower are opened to the outer surface. A rotating body having a suction port which is rotatably supported inside the outer opening and rotatably supported by the cleaner body and which communicates the dust collecting chamber to the outside; A shutter body slidably supported along an outer surface substantially perpendicular to a rotation axis direction of the rotating body between the rotating body and the cleaner body, and a shutter body for opening and closing the outer surface of the rotating body; A hose having locking means for detachably locking the locking portion of the rotating body, one end of which is removably inserted into a suction port of the rotating body; and The leading edge of the shutter body in the sliding direction abuts on a position deviated from the rotation axis An electric vacuum cleaner comprising a projection that is formed. 2. The vacuum cleaner according to claim 1, wherein the shutter body has a concave portion on an inner surface of the shutter body, the concave portion being removably engaged with a projection of the rotating body when the shutter body is completely closed. . 3. A main body-side contact provided in the rotating body and electrically connected to a power supply, and a hose-side contact provided on a hose and coming into contact with the main body-side contact so as to be able to contact and separate therefrom. The hose is urged outward from the outer surface of the rotating body by an elastic body, and is provided so as to be able to protrude and retract at a position where the hose comes into contact with the insertion direction. The rotating body is electrically connected between the main body side contact and a power supply. The switch according to claim 1 or 2, wherein a switch connected to the switch and a switch opening / closing mechanism that opens and closes the switch when the protrusion protrudes from the protrusion are integrated with the switch. Vacuum cleaner.