JPH0377518A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To reduce the backlash of a rotary body to a cover body by forming a roughly ring-shaped external projection section to project to ward a first cover body member and to be brought in contact with the upper surface section of the rotary body slidably surrounding a suction port, on the peripheral section of the external opening of a second cover body member, in parallel with an inclined section, and by retaining the rotary body directly with both the cover body members. CONSTITUTION:Mutual contact sections between both cover body members 56, 57 and a rotary body 81, namely, an internal projected section 63, a sliding salient section, an external projected section 67, and the like are arranged in parallel with the inclined section 55 of a cover body 23, and are arranged with the center of the axial core A of a suction port 84, and so on the rotary body 81, rotational movement only with the center of the axial core A is to be allowed. Besides, the inclined surface of the inner peripheral surface of the guide salient-section 95 of the rotary body 81 is inclined at an angle alpha, and so the most front section of the external projected section 67 is slidably brought in contact with this inclined surface. Then, the rotary body 81 can be directly retained with both the cover body members 56, 57. As a result, the backlash of the rotary body 81 to the cover body 23 is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a vacuum cleaner having a suction port in a rotating body, and particularly to the structure of a support portion of the rotating body.

(Prior Art) Conventionally, as described in, for example, Japanese Patent Application Laid-open No. 63-51825, a lid body that covers an upwardly open dust collection chamber in a main body case, which can be opened and closed from above, is provided with a horizontal direction. A suction suction unit is provided in which a rotating body is rotatably supported on the tilted part of the lid body with a direction perpendicular to the tilted part as a rotation axis direction, and a suction hose is connected to this rotating body. Vacuum cleaners with mouths are known. Note that the rotating body is provided on the inclined portion so that the hose can be easily directed in various directions such as up and down, front and back, and left and right.

In conventional vacuum cleaners of this kind, a structure as shown in FIG. 3, for example, has been adopted to support the rotating body.

In FIG. 3, reference numeral 1 denotes a lid body, and this lid body 1 consists of a first lid member 2 and a second lid member 3 connected to the upper side of the first lid member 2 with a screw or the like. 2.3 is formed with an inner opening 04 and an outer opening 5 which face each other. A support plate 7 having an intermediate opening 6 facing the openings 4.5 is fixedly held between the lid members 2.3. Further, the rotating body 8 is composed of a first rotating body member 9 and a second rotating body member fixed above the first rotating body member 9 with a screw 10 or the like. The second rotating body member 11 has a cylindrical suction port 12, while the first rotating body member 9 has a cylindrical shape that is airtightly connected to the suction port 12 via a seal backing 13. It has a section 14 at the bottom. Further, a suction port packing 15 is attached to the periphery of the inner opening 4, and the lower end of the cylindrical portion 14 is slidably and airtightly pressed. The peripheral portions of both rotating body members 9° 11 are slidably sandwiched between the peripheral portions of the intermediate opening 6 of the support plate 7.
A rotating body 8 is rotatably supported.

Note that a shutter 16 that opens and closes the suction port 12 is slidably supported between the second lid member 3 and the second rotating member 11. Furthermore, a pair of annular sliding contact plates 17 and 18 are fixed to the lower end surface and outer peripheral surface of the first rotating body member 9, respectively. On the other hand, although not shown, a pair of fixed contact plates are attached to the first lid member 2 and the support plate 7, respectively, with which the sliding contact plates 17 and 18 are slidably contacted.

(Problem to be Solved by the Invention) However, in the above conventional structure in which the rotary body 8 is supported in two stages via the support plate 7 held between the pair of lid members 2.3, the lid body l and the support plate 7, as well as between the support plate 7 and the rotary body 8, and these two rattles are compounded, especially on the outer circumferential side of the rotary body 8. Poor contact between the sliding contact plate 18 was likely to occur, and the airtightness between the first rotating body member 9 and the suction port packing 15 was likely to be poor. Note that rattling is particularly likely to occur in the radial direction of the rotating body 8. Therefore, in order to prevent this, a lot of dimensional control is required, which poses a problem in parts management. In addition, before assembling the lid body 1,
Both rotating body members 9, 11 are assembled to each other via the support plate 7, but until both rotating body members 9, 11 are fixed to each other with screws 10, both rotating body members 9, 11 are attached to the support plate 7, respectively. Both rotating body members 9 can be rotated freely relative to each other.
When tightening the screws , 11, it is necessary to prevent them from rotating.
Assembly was becoming troublesome.

By the way, when the upper and lower lid members that make up the lid that covers the dust collection chamber from above in the membrane are molded from synthetic resin, etc., due to their connection with the main body case or their shape, they are structurally limited in the vertical direction. It is common to perform die cutting. However, since the rotating body is disposed on the inclined part of the lid, an annular rib with a uniform thickness for supporting the rotating body is integrally formed on both lid members, so that the rotating body can be directly attached to both lid members. Even if an attempt is made to clamp the rotary body, the ribs create an undercut shape in the die cutting direction, making molding difficult. Therefore, conventionally, a structure has been adopted in which the rotating body 8 is supported via the support plate 7 as described above.

On the other hand, 1 for directly holding the rotating body by the dome body member.
One method is to cut out the mold in a direction perpendicular to the sloped part of the lid where the rotating body is placed when molding the dome. Problems arise in that molding becomes difficult and the shape of this part is subject to restrictions.

The present invention is intended to solve the above-mentioned problems, and aims to provide a vacuum cleaner that can reduce rattling of the rotating body with respect to the lid, has good productivity, and is inexpensive. It is something.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the present invention includes a main body case which houses an electric blower and is provided with an upwardly open dust collection chamber that communicates with the electric blower; a lid body that covers the dust collection chamber from above in a freely openable and closable manner and has an inclined part that is inclined with respect to a horizontal plane in a closed state; a rotating body that is movably supported and has a suction port that communicates with the dust collection chamber and is connected to, for example, a suction hose; the lid body has an inner opening facing the suction port; In a vacuum cleaner comprising a lid member and a second lid member that is coupled to the upper side of the first lid member with a gap therebetween and has an outer opening facing the suction port, the first lid A substantially annular inner protrusion protruding toward the second lid member is formed in a peripheral part of the inner opening of the body member in parallel with the inclined part, and on a circumferential surface of the inner protrusion, An inclined surface is formed that is inclined with respect to the rotational axis direction of the rotating body, and the lower part of the rotating body surrounds the suction port, and the second lid member is formed on the inclined surface of the inner protrusion. A substantially annular sliding protrusion is provided which is slidably abutted from the side; A substantially annular outer protrusion that surrounds the suction port of the rotary body and is slidably abutted on the upper surface of the rotary body is formed parallel to the inclined portion, so that the rotary body is directly clamped by the dome body member. This is what I did. Along with this, in the inner protruding part of the first lid member, all the surfaces are oriented horizontally or upwardly than the horizontal direction, while in the outer protruding part of the second lid member, all the surfaces are oriented horizontally or upwardly. It is oriented downward rather than horizontally.

(Function) In the vacuum cleaner of the present invention, at the time of manufacture, the first lid member constituting the lid having the inclined portion inclined with respect to the horizontal plane and the second lid member coupled to the upper side of the first lid member are, for example, Molded from synthetic resin or the like, when molding the first lid member, a substantially annular inner side protrudes from the periphery of the inner opening of the inclined portion of the first lid member toward the second lid member. Despite the formation of a protrusion, the surfaces of this inner protrusion are all horizontal or oriented upwards, so even if die cutting is performed in the vertical direction, the inner protrusion will be undercut. do not become. Similarly, when molding the second lid member, a substantially annular outer protrusion is formed that protrudes toward the lid member from the periphery of the outer opening of the inclined portion of the second lid member. However, since the surfaces of the outer protrusions are all horizontal or oriented below the horizontal direction, die cutting can be performed in the vertical direction. Being able to perform die cutting in the vertical direction in this manner is advantageous in molding a lid body that covers the dust collection chamber of the main body case from above. Next, when assembling the lid, the lid members are joined together while the rotating body is held between the fornix members so that the suction port of the rotary body faces the opening of the fornix member.

In this state, the sliding protrusion at the bottom of the rotary body surrounds the suction port on the inclined surface of the inner protrusion that is parallel to the slope and is inclined with respect to the rotation axis direction of the rotary body. 2 is slidably abutted from the lid member side, and the outer protruding portion parallel to the inclined portion is slidably abutted on the upper surface of the rotating body surrounding the suction port, so that the rotating The movable body is axially restricted in position with respect to the lid, and is also radially restricted in position, and is supported by the lid with a direction perpendicular to the inclined portion thereof as a rotation axis direction. Furthermore, since rattling occurs only at one location between the lid and the rotating body, the rattling of the rotating body relative to the lid is reduced compared to when the rotating body is supported via a support plate. This ensures that airtightness between the lid and the rotating body is maintained during use.

(Example) Hereinafter, the configuration of an example of the vacuum cleaner of the present invention will be described based on FIGS. 1 and 2.

21 is a vacuum cleaner main body, and this vacuum cleaner main body 21 consists of a main body case 22 and a lid body 23. Further, the main body case 22 includes a lower main body case member 24 having an open upper surface, and an upper main body case member 25 coupled and fixed to the rear upper side of the lower main body case member 24.

Inside the main body case 22, a dust collection chamber 33 is defined at the front, which is opened upward by a partition wall 32 having a communication port 31 and is covered by the lid 23 from above so as to be openable and closable. Further, the lower main body case member 2
An electric blower 34 and a cord reel device (not shown) are installed at a rear position of the partition wall 32 inside the main body 4, and these are covered from above by the upper main body case member 25. The electric blower 34 has a pair of rubber supports 36.3? The dust collection chamber 33 is held between the front and rear sides, and the intake side is communicated with the dust collection chamber 33 via the communication port 31.

Furthermore, a main exhaust filter 38 and an auxiliary exhaust filter 39 are attached to the rearmost portion of the main body case 22. An exhaust port 40 is formed on the rear surface of the main body case 22 and communicates with the exhaust side of the electric blower 34 via the exhaust filters 38 and 39.

On the other hand, a main dust collecting filter 41 is installed in the dust collecting chamber 33 and is detachable through an opening on the upper surface thereof. The main dust collecting filter 41 includes a bag-like filter medium 42 and a mouth frame 43 that is airtightly fixed to the opening of the bag-like filter medium 42. The opening frame 43 is detachably held by a holder 44 pivotally attached to the upper front part of the dust collecting chamber 33. Further, an auxiliary dust collecting filter 45 is attached to the front side of the partition wall 32 to cover the communication port 31 thereof.

The lid body 23 is supported by the main body case 22 at its rear edge so as to be vertically movable. In order to hold the lid 23 in a closed state, a clamp 51 is pivotally attached to the front surface of the lid 23.
The locking portion 52 that is removably engaged with the main body case 2
It is formed on the upper front surface of 2.

Note that the clamp 51 is biased by a spring 53 in a direction in which it is engaged with the locking portion 52 .

In addition, although the rear part of the lid body 23 is horizontal, the front part is in a closed state and is, for example, 25
The inclined portion 55 is inclined at an angle α of approximately 1°. This inclined portion 55 is inclined in a downward direction toward the front.

The lid 23 is composed of a first lid member 56 and a second lid member 57 which is connected and fixed to the upper side of the lid member 56 with a gap therebetween by screws or the like. That is, the second lid member 57 covers the upper opening of the first lid member 56, which is substantially box-shaped and has an open upper surface.

A backing 58 is airtightly attached to the peripheral edge of the lower surface of the first lid member 56 so that the backing 58 can come into and out of contact with the upper opening edge of the dust collection chamber 33 in an airtight manner.

The fornix members 56, 57 each have a substantially parallel sloped portion at the front in order to form the sloped portion 55. And, in the inclined part of the fornix body member 56,57,
Opposite inner openings 6! and an outer opening 62 are respectively formed.

Further, the first lid member 56 has an annular inner protrusion 63 that concentrically surrounds the inner opening 61 and protrudes toward the second lid member 57. It is integrally formed parallel to the However, the inner protrusion 63 has a cutout at the frontmost portion. Then, on the tip surface of this inner protrusion 63, the receiver is attached to the protrusion 64 over the entire circumference.
are integrally formed, and a tapered rib 65 is integrally formed on the inner peripheral side of the protrusion 64,
An inclined surface 66 whose diameter decreases upward is formed on the outer peripheral surface of the rib 65. The generatrix direction of this inclined surface 66 is inclined at the angle α with respect to the axis A of the opening 61.62.

On the other hand, the second lid member 57 has an annular outer protrusion 67 that concentrically surrounds the outer opening 62 of the second lid member 57 and protrudes toward the first lid member 56 . It is integrally formed parallel to the However, this outer protrusion 67 is cut out at the rearmost portion.

Further, the first lid member 56 has an inner protrusion 6 .
Bosses on the front, rear, left and right of the radial direction of 3? 1.72°73,7
4 are integrally formed so as to protrude toward the second lid member 57, respectively. Further, the second lid member 57 includes:
Guide lips 75 extending in the front-rear direction are integrally formed on both left and right sides of the outer opening 62 toward the first lid member 56 .

And the inner protrusion 63 and the boss of the first lid member 56? +, . . . , 74 have their respective surfaces all oriented horizontally or facing upwards from the horizontal direction. For example, if we take the inner protrusion 63 as an example, the generatrix direction of the outer peripheral surface of the front part and the inner peripheral surface of the rear part is the vertical direction, that is, the vertical direction, and the inclined surface 66 is set at the angle α as described above.
This is achieved by tilting the In addition, each surface of the outer protruding portion 67 of the second lid member 57 is all oriented horizontally or directed downwardly with respect to the horizontal direction. this is,
For example, this can be achieved by setting the generatrix direction of the outer protrusion 67 in the vertical direction. Along with this, the fornix body member 56
, 57, all of the surfaces are horizontal or directed upwards from the horizontal direction. Further, the fornix body member 56.
57, each surface is all horizontal or directed downward from the horizontal direction. In this way, the dome members 56, 57 have a structure that allows them to be cut out in the vertical direction perpendicular to the horizontal plane when molded, for example, from synthetic resin.

81 is a rotating body, and this rotating body 81 is the first rotating body member 8
2, and a second rotating body member 83 that is coaxially coupled and fixed to the upper side of the first rotating body member 82 by screws or the like, and is located within the inclined portion 55 of the lid body 23 and is located in the dome. It is directly held between the body members 56 and 57 so as to be rotatable with the direction orthogonal to the inclined portion 55 as the rotation axis direction. Said first
The rotating body member 82 is shaped like a disc, and is integrally formed with a cylindrical suction port 84 projecting downward at the center thereof. Further, the second rotating body member 83 has a short cylindrical shape with an open top surface, and a cylindrical portion 85 projecting downward is integrally formed at the center of the bottom surface. The suction port 84 and the cylindrical portion 85 communicate the dust collection chamber 33 with the outside of the cleaner main body 11, and their axes, the rotation axis of the rotation body 81, and the dome body members sa, sv opening 61
All of them coincide with the axis A of 62°.

The suction port 84 and the cylindrical portion 85 are airtightly connected via an annular seal backing 86. Further, an annular suction port packing 87 is airtightly inserted and attached to the peripheral edge of the inner opening 61 of the first lid member 56, and a tapered shape integrally formed with the suction port packing 87 is attached. The lower end surface of the cylindrical portion 85 is slidably and airtightly pressed against the lip portion 88 .

An annular sliding protrusion 91 is integrally formed on the lower surface of the first rotating body member 82 so as to concentrically surround the cylindrical portion 85 thereof. An inclined surface 92 whose diameter decreases upward is formed on the inner circumferential surface of this sliding protrusion 91 . The generatrix direction of this inclined surface 92 is inclined with respect to the axis A at the angle α.

The sliding protrusion 91 has a flat lower end surface 93 that receives the inner protrusion 67 of the first lid member 56.
The inclined surface 92 is slidably abutted on the distal end surface of the second lid member 5I from the side of the second lid member 5I, and the inclined surface 92 is slidably abutted on the inclined surface 66 of the inner protrusion 67 from the same direction.

Further, the lower end surface of the outer protruding portion 67 of the second lid member 57 is slidably abutted on the upper surface peripheral portion 4 of the second rotating body member 83 surrounding the suction port 84 thereof. However, an annular guide protrusion 95 that protrudes upward is integrally formed on the outer peripheral edge of the upper surface peripheral portion 94. The inner circumferential surface of the guide protrusion 95 is an inclined surface 96 whose diameter increases upward.

The generatrix direction of this inclined surface 96 is inclined at the angle α with respect to the axis.

A shutter 100 for closing the suction port 84 in an openable and closable manner is supported between the pair of guide lips 75 of the second lid member S7 so as to be slidable back and forth.

Further, on the lower surface of the first rotating body member 82, a pair of annular high pressure sliding contact plates 1 are provided concentrically with respect to the axis A thereof.
01 is fixed. Note that the inner protrusion 63 is located between these high pressure sliding contact plates +01. Further, the outer circumferential surface of the first rotating body member 82 has an axis A
A pair of annular low-pressure sliding contact plates 102 are fixed in alignment in the direction.

On the other hand, on the front and rear bosses 71 and 72 of the first lid member 56, high-pressure fixed contact plates 103 are attached with screws 104, respectively, and are slidably contacted with the high-pressure sliding contact plates 101. It is being Further, fixed contact plates 105 for low pressure are attached to the left and right bosses 73 and 74 of the first lid member 56 by screws 106, respectively, and are slidably contacted by the sliding contact plates 102 for low pressure. It is being

Although not shown, the suction port 84 of the rotating body 81
A high-voltage connector part and a low-voltage connector part each consisting of a pair of contact plates are provided around the periphery of the , and each contact plate of the high-voltage connector part is attached to each high-voltage sliding contact plate 101, respectively. In addition to being electrically connected, each contact plate of a part of the low voltage connector is electrically connected to each of the low voltage sliding contact plates 102, respectively. Further, the high voltage fixed contact plate 103 is electrically connected to the cord reel device, and the low voltage fixed contact plate 103 is electrically connected to the cord reel device.
05 is electrically connected to a control circuit of an electric blower 34 provided inside the main body case 22.

Although not shown, one bent end of a suction hose is detachably inserted into the suction port 84, and the suction port 84 is connected to the suction port 84 at one end of the hose.
A high-voltage connector part and a low-voltage connector part are provided to be electrically and mechanically connected to each of the connector parts of 4.

A portion of this low pressure connector is electrically connected to a remote control section for operating an electric blower provided at the other end of the hose. Further, a suction port body is connected to the other end of the hose via an extension pipe, and this suction port body has a built-in rotating brush driven by an electric motor. A portion of the high voltage connector is electrically connected to the electric motor via a power supply line and a switch along the hose and extension pipe.

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

During manufacturing, the fornix body member 56.5? They are each integrally molded from, for example, synthetic resin. At this time, die cutting can be performed in the vertical direction by setting the orientation of the surface of the fornix body member 56.57 including the protruding portions 63.67 described above. That is, the protruding portion 63.6 protrudes in a direction perpendicular to the inclined portion 55 that is inclined with respect to the horizontal plane of the lid body 13.
7 and boss? Despite the formation of +, . When forming the lid that covers the dust collection chamber of the main body case from above,
Since it is natural to perform die cutting in the vertical direction, it is advantageous to be able to carry out die cutting in the vertical direction as described above.

Therefore, there is no need for a slide core etc. during molding.
The mold structure can be simplified, manufacturing is easy, and it can be done at low cost.

Furthermore, when assembling the lid body 23, first both rotating body members 82.
The rotary body 81 is assembled by engaging and fixedly connecting the parts 83 with screws or the like. At this time, there is no need to interpose a support plate as in the prior art, and both rotating body members 112, 83 can be directly assembled to each other, so there is no need for a rotation stopper, and assembly is simple.

Next, fornix body member 56.5? The suction port 84 of the rotary body 81 is opposed to the openings 61, 62 of the rotary body 81, and while the rotary body 81 is held between the dome body members 56,57, the lid body members 56,57 are placed at appropriate positions. Connect with screws, etc.

In this state, the receiver of the inner protrusion 63 of the first lid member 56 has the protrusion 64 and the inclined surface 66 aligned with the lower end surface 93 and the inclined surface 92 of the sliding protrusion 91 on the lower surface of the rotating body 81. The second lid member 57 is abutted from one side in the direction of the axis A.
The outer protrusion 67 is brought into contact with the upper peripheral portion 94 of the rotary body 81 from the other side in the direction of the axis A, whereby the position of the rotary body 81 is regulated in the axial direction with respect to the lid 23 . At the same time, due to the abutment of the inclined surfaces 66°92 of the protrusions 63.91 and the positioning of the guide protrusion 95 of the rotary body 81 near the outer circumferential side of the outer protrusion 67, the rotary body 81 is 13
The position is restricted in the radial direction. In addition, the outer protrusion 6
7, the cylindrical portion 85 of the rotating body 81 is
is reliably pressed against the suction port packing 15 in an airtight manner.

And fornix body member 56.5? and the rotating body 81, that is, the inner protrusion 63 and the sliding protrusion 91
In addition, since the outer protruding portion 67 and the like are parallel to the inclined portion 55 of the lid body 13 and centered on the axis A of the suction port 86, the rotating body 81 is only allowed to rotate around the axis A. will be done. Note that since the inclined surface 96 of the inner circumferential surface of the guide protrusion 95 of the rotating body 81 is inclined at an angle α, the foremost part of the outer protrusion 67 comes into sliding contact with this inclined surface 96. Become.

Furthermore, since the sloped surfaces 66 and 92 of the protrusion 63.91 are sloped at the same angle α, they come into close contact with each other.

In this way, since the rotating body 81 can be directly held between the dome members 56 and 57, the support plate is not required and the parts The number of points is reduced, ease of assembly is improved, and
It can be done cheaply.

When in use, ie, during cleaning, one end of the hose is connected to the suction port 86 of the rotating body 81, and the suction port body is connected to the other end of this hose via an extension pipe. In this state, by operating the remote control part of the hose that is electrically connected to the control circuit in the vacuum cleaner main body 21 by the low pressure sliding contact plate +02 and the low pressure fixed contact plate 105 that are in contact with each other. , the electric blower 34 can be controlled on and off.

By driving this electric blower m34, the dust sucked in with air from the suction port body is guided to the dust collection chamber 33 of the vacuum cleaner main body 21 through the hose and extension pipe, and then into the main dust collection filter 41. Captured.

In addition, the air filtered here is filtered through the auxiliary dust collection filter 4.
5. The air passes through the electric blower 34 and exhaust filters 38 and 39, and is discharged from the exhaust port 40. Note that the high voltage sliding contact plate 101 and the high voltage fixed contact plate 1 are in contact with each other.
If power is supplied to the electric motor of the suction port body from the vacuum cleaner body 21 side through the vacuum cleaner body 21 side through the vacuum cleaner body 21 side, the rotating brush is driven and dust can be scraped out from the carpet or the like.

Further, during cleaning, the suction port body can be easily directed in various directions by rotating the rotating body 81 to which the bent end of the hose is connected.

Since the rotary body 81 is directly supported by the lid body 23, rattling occurs only at one place between the two, so compared to the case where the rotary body is supported through a support plate, the lid Shaking of the rotating body gt with respect to the body 23 is reduced. Therefore, the displacement of the cylindrical portion 85 of the rotating body 8 with respect to the suction port packing 87 is reduced compared to the conventional case.
Airtightness is better maintained and there is less loss of suction performance. At the same time, poor contact between the low-pressure sliding contact plate 1G2 and the low-pressure fixed contact plate 105 on the outer peripheral side of the rotary body 81 is particularly prevented, so that the electric blower 34 can be controlled reliably. In addition, by reducing rattling, manufacturing and dimensional control become easier.

Also, the sliding portion between the rotating body 81 and the lid body 23 is approximately line 8! Since the rotating body 81 is in the touching state, the rotating body 81 rotates smoothly.

In the above embodiment, the sliding protrusion 91 of the rotary body 81 was brought into contact with the outer circumferential side of the inner protruding part 63 of the first lid member 56, but conversely, the sliding protrusion 91 was brought into contact with the inner circumferential side of the inner protruding part 63 of the first lid member 56. Even if the protrusions are brought into contact, the position of the rotating body 81 in the radial direction can be restricted.

Further, although the inclined surface 92 of the sliding protrusion 91 of the rotating body 81 or the guide protrusion 95 are not necessarily necessary, the stability and durability of the support of the rotating body 81 will be improved if they are present. will improve.

〔Effect of the invention〕

According to the present invention, in order to support the rotating body having the suction port between the first lid member and the second lid member coupled to the upper side thereof, the first lid member has an inclined surface. an annular inner protrusion, a sliding protrusion abutting the inclined surface on the lower part of the rotating body, and a substantially annular inner protrusion on the second lid member abutting the upper surface of the rotating body; Since the outer protrusion is formed and the rotary body is directly held between the dome members, the number of parts can be reduced and ease of assembly can be improved compared to the conventional case where the rotary body is supported via a support plate. At the same time, it can be done inexpensively,
In addition, rattling of the rotating body with respect to the lid body is reduced, so that the airtightness between the lid body and the rotating body during use is improved. Furthermore, although the rotary body is supported by an inclined part of the lid that covers the dust collection chamber of the main body case from above, which is inclined with respect to the horizontal plane, the inner protrusion for this support does not allow all surfaces to be horizontal. Since all the surfaces of the outer protrusions are oriented horizontally or downwardly than the horizontal direction, when molding the dome member having each of these protrusions from synthetic resin, for example, the vertical Therefore, the structure of the molding die can be simplified, molding can be facilitated, productivity can be further improved, and the cost can be lowered.

[Brief explanation of drawings]

Fig. 1 is an overall vertical cross-sectional view showing an embodiment of the vacuum cleaner of the present invention, Fig. 2 is a cross-sectional view of the rotary body section taken along the line A of the same, and Fig. 3 is a conventional vacuum cleaner. FIG. 3 is a cross-sectional view of a rotating body portion showing an example. 22. Main case, 23. Lid body, 33. Dust collection chamber,
34...Electric blower, 55...Slope portion, 56...First lid member, 57...Second lid member, 61...Inner opening, 6
2..Outer opening, 63..Inner protrusion, 66. Slanted surface,
67...Outside protrusion, 81...Rotating body, 84...Suction port, 91...Sliding protrusion.

Claims (1)

[Claims] (1) A main body case that houses a built-in electric blower and has an upwardly open dust collection chamber that communicates with the electric blower, and that covers the dust collection chamber from above so that it can be opened and closed, and when it is closed, it faces a horizontal surface. a lid body having a sloped portion that slopes at a distance; and a suction port that is rotatably supported on the sloped portion of the lid body with a rotation axis direction perpendicular to the sloped portion and that communicates with the dust collection chamber. a rotating body, the lid is coupled with a first lid member having an inner opening facing the suction port, and a gap is maintained above the first lid member, and the lid is connected to the suction port. a second lid member having opposing outer openings, and a substantially annular inner protrusion protruding toward the second lid member around the inner opening of the first lid member. An inclined surface is formed parallel to the inclined part and is inclined with respect to the rotational axis direction of the rotating body on the circumferential surface of the inner protrusion, and a lower part of the rotating body surrounds the suction port. and a substantially annular sliding protrusion that is slidably abutted from the second lid member side on the inclined surface of the inner protrusion, and a peripheral portion of the outer opening of the second lid member. and a substantially annular outer protrusion that protrudes toward the first lid member and slidably abuts on the upper surface of the rotating body surrounding the suction port, parallel to the inclined part. The inner protrusion of the first lid member has each surface all oriented in a horizontal direction or upwardly than the horizontal direction, and the outer protrusion of the second lid member has each surface all oriented in a horizontal direction or in a horizontal direction. A vacuum cleaner characterized by being oriented downward.