JPH0128758Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to a suction port body for a vacuum cleaner.

(Prior Art) The suction mouth body of a conventional vacuum cleaner is equipped with a suction mouth body that has a suction mouth opened on the lower surface and a rotary pipe connected to the rear part so as to be freely rotatable in the circumferential direction. In a type where the width and width are almost equal, when cleaning by sliding the rotary tube horizontally on the surface to be cleaned, resistance from the surface to be cleaned causes the suction port body to move as shown in Figure 8. may be reversed on the surface being cleaned.

Therefore, in the conventional suction port body, for example, as shown in FIGS.
A brake body 4 is provided in pressure contact with the outer periphery of the rotating tube 2 to restrict the rotation of the suction port body 1 relative to the rotating tube 2, thereby preventing the suction port body 1 from being reversed on the surface to be cleaned. .

In addition, for example, as described in Utility Model Application Publication No. 56-1554 and Utility Model Application Publication No. 56-26043,
An annular anti-rotation member is interposed between the inner periphery of the rotating tube attachment port of the suction port body and the outer periphery of the rotating tube inserted into the rotating tube attachment port to prevent the suction port body from turning over on the surface to be cleaned. A similar structure was adopted.

(Problems to be Solved by the Invention) In the suction port body having the structure shown in FIGS. 9 and 10, since the rotary tube 2 is pressed by the brake body 4, The inner circumferential edge of the rotating tube attachment port 5 of the inserted suction port main body 1 rubs and wears, and the rotating tube attachment port 5 becomes larger, creating a gap between it and the rotating tube 2, causing it to wobble.
In addition, there is a problem that leakage air enters through the gap and weakens the suction force.
The problem was that the number of parts required to incorporate the components was large, which increased the number of assembly steps and increased costs.

Also, the above-mentioned Utility Model Application Publication No. 56-1554 and Utility Model Application Publication No. 56
Even with the suction port body having the structure described in Publication No. 26043, the number of parts increases because the annular anti-rotation member is incorporated, and it takes time and effort to assemble the anti-rotation member.
This has the problem of high cost.

The present invention was developed in view of the above-mentioned problems.It does not turn over even when cleaning the surface to be cleaned horizontally, has excellent durability as there is no wear on the rotating parts, and is resistant to leakage. Therefore, it is an object of the present invention to provide a suction port body for a vacuum cleaner that can be obtained at low cost without deteriorating suction performance.

[Structure of the idea]

(Means for Solving the Problems) The suction port body of the vacuum cleaner of the present invention includes a suction port body that has a suction port opened on the lower surface and a rotary pipe attachment port that communicates with the suction port formed at the rear, and A rotary tube is rotatably connected to the rotary tube attachment port of the suction port body in a circumferential direction, and an annular fitting portion is formed at the opening edge of the rotary tube attachment port formed at the rear of the suction port body. , an annular first portion slidingly in contact with the outer peripheral portion of the proximal end of the rotary tube on the inside and outside of the fitting portion of the rotary tube;
a flange and a second flange are formed apart from each other, and on either the first or second flange of the rotary tube, the fitting portion is formed on the inside or outside of the fitting portion formed at the rotary tube attachment port of the suction port main body. An engaging portion is formed that elastically presses against the rotating tube in the axial direction, and the engaging portion formed on the rotating tube is in sliding contact with a fitting portion formed on the opening edge of the rotating tube attachment port of the suction port main body. A convex portion is provided toward the surface, and a concave portion that engages with the convex portion protruding from the engaging portion of the rotary tube is formed in the fitting portion formed at the opening edge of the rotary tube attachment port of the suction port main body. It is characterized by this.

(Function) In the suction port body of the vacuum cleaner of the present invention, the suction air containing dust is sucked from the suction port into the suction port body,
Air is blown into the vacuum cleaner from the rotating tube. and,
When cleaning by sliding this suction port body in the horizontal direction, the convex part of the engaging part formed on either the first or second flange of the rotary tube moves in the axial direction of the engaging part. The rotating tube does not rotate because it is engaged with the recess of the fitting part of the opening edge of the rotary tube attachment port of the suction port body with the elastic force of will not be reversed and turned upside down.
Further, when it is necessary to rotate the suction port main body with respect to the rotary tube to set a predetermined angle depending on the place to be cleaned, the suction port main body is rotated after disengaging the concave portion and the convex portion.
In addition, other engaging portions having convex portions that do not engage with the concave portions connect the opening edge of the rotary tube attachment port and the first or second flange of the rotary tube via the convex portions. Since it is pressed in the axial direction, it seals the rotary tube installation port and prevents suction air from leaking.

(Embodiment) The configuration of an embodiment of the present invention will be explained based on FIGS. 1 to 6.

Reference numeral 11 denotes a suction port main body whose vertical and horizontal widths are approximately equal.A suction port 12 is formed on the lower surface of the suction port main body 11, and a portion inside the suction port main body 11 is provided facing the suction port 12. A rotating brush 13 is rotatably provided at the suction port 12.
A fan 15 is rotatably provided in the suction port main body 11, and rotates by the air sucked in from the suction port 11, and rotates the rotary brush 13 via an endless drive belt 14. Further, a circular rotary tube attachment port 17 is formed on the rear wall 16 of the suction port body 11 near the fan 15.
A rotary tube 18 is connected to the rotary tube 7 so as to be rotatable in the circumferential direction thereof, and the suction air from the suction port 12 is blown into the vacuum cleaner through the rotary tube 18.

Next, a connection structure between the suction port main body 11 and the rotary tube 18 will be explained.

A rotary tube attachment port 17 is formed on the rear wall 16 of the suction port main body 11 at the joining edge of an upper case 21 and a lower case 22, which are divided into upper and lower parts. 18 is rotatably held in the rotary tube attachment port 17.

An inner wall 23 is provided upright within the suction port main body 11, and the rotary tube attachment port 17 is formed by penetrating through the inner wall 23, and a fitting portion is formed at the opening edge of the rotary tube attachment port 17. It is formed. Further, this inner wall 23 is divided into an upper case 21 side and a lower case 22 side, and a recess 24 is formed on each inner surface side. Each recess 24 is provided at the edge of the rotary tube attachment port 17 on the vertical axis passing through the center of the rotary tube attachment port 17.

Further, the rotary tube 18 has an annular first flange 25 protruding from the outer periphery of the proximal end on the connection side with the suction port main body 11, and the first flange 25 is also provided on the outer periphery of the vicinity of the first flange 25. An annular second flange 26 is formed at a constant distance from 25, that is, at a distance corresponding to the distance from the outer surface of the side wall 16 of the suction port body 1 to the inner surface of the inner wall 23.

When the rotary tube 18 is held between the upper case 21 and the lower case 22, the first flange 25 comes into sliding contact with the inner surface of the inner wall 23, which is the inner surface of the fitting portion of the rotary tube attachment port 17. 2 flange 2
6 is in sliding contact with the outer surface of the side wall 16, which is the outer surface of the fitting portion of the rotary tube attachment port 17. Also, when the rotary tube 18 rotates, the first flange 25 is connected to the inner wall 2.
The rotary tube attachment port 1 on the inner surface of the opening edge of No. 3
It slides on the sliding surface along the inner surface of the fitting part 7.
Further, on this first flange 25, engaging portions 28 having elasticity in the axial direction of the rotary tube 18 are provided at every 45 degree angle by a pair of slits 27, and each of the engaging portions 28 is connected to the suction It is adapted to be pressed against the inner wall 23 side of the mouth main body 11. Further, this engaging portion 28 has a recess 2 formed in the inner wall 23.
A convex portion 29 that engages with the rotary tube 18 is provided to protrude in the axial direction of the rotary tube 18 .

Next, the operation of this embodiment will be explained.

When this suction port body is connected to a vacuum cleaner and the power of the electric blower in the vacuum cleaner body is turned on, air is sucked in from the suction port 12, and the fan 15 in the suction port body 11 is rotated to create a rotating tube. Air is blown into the vacuum cleaner from 18. As the fan 15 rotates, the rotating brush 13 rotates to scrape up dust on the surface to be cleaned, and the suction air containing dust is sent to the suction port 12.
is sucked from.

When cleaning by sliding this suction port body laterally, the convex portion 29 of the engaging portion 28 of the rotary tube 18
is engaged with the recess 24 of the suction port body 11, the rotary tube 18 does not rotate, and therefore the suction port body 11 does not turn over and become upside down due to a load from the lateral direction.

By the way, when it is necessary to rotate the suction port body 11 with respect to the rotary tube 18 depending on the place to be cleaned and to set a predetermined angle, the engagement between the concave portion 24 and the convex portion 29 is released and the suction port body 11 is rotated.

In addition, as shown in FIG. 3, the other engaging portions 28 having the convex portions 29 that are not engaged with the concave portions 24 engage the fitting portion of the suction port body 11 via the convex portions 29. Since it comes into pressure contact with the inner wall 23, the rotary tube 18 is urged in the axial direction to be inserted into the rotary tube attachment port 17, and the second flange 26 closely contacts the suction port body 1 and seals the rotary tube attachment port 17.

When assembling this suction port body, the rotary tube 1
8 can be attached to the rotary tube attachment port 17 by simply holding it between the upper case 21 and the lower case 22, making assembly easy.

In the structure of the above embodiment, the engaging portion 28 having the convex portion 29 is connected to the first flange portion 2 of the rotary tube 18.
5, and the recess 24 is formed on the inner surface of the fitting part formed at the opening edge of the rotary tube attachment port 17 of the suction port main body 11.
9 is formed on the second flange 26, and the convex portion 29 is attached to the outer surface of the fitting portion formed at the opening edge of the rotary tube attachment port 17 of the suction port body. It is also possible to have a structure in which it protrudes in the axial direction.

Note that, as shown in FIG.
Or the rotating pipe attachment port 17 of the suction port body 11, which is the sliding surface on which the second flange portions 25 and 26 slide.
If the recess 24 is formed to have a predetermined width along the inner or outer surface of the fitting portion of the rotating tube, and the width of the protrusion 29 is made narrower than the width of the recess 24, the protrusion 29 can freely slide within the recess 24, and the rotating tube Since the suction port 18 can freely rotate by a predetermined angle with respect to the suction port main body 11, cleaning in the lateral direction is facilitated.

[Effect of idea]

According to the present invention, an annular first portion is provided on the outer periphery of the base end of the rotary tube and slides on the inner and outer surfaces of the fitting portion formed at the opening edge of the rotary tube attachment port formed at the rear of the suction port main body. a flange and a second flange are formed apart from each other, and either the first or second flange has a convex portion protruding from the inner or outer surface of the fitting portion of the rotary pipe attachment port of the suction port main body. An engaging portion is formed which presses against the other side with an elastic force in the axial direction, and the above-mentioned Since a concave portion is formed that engages with the convex portion of the engaging portion, when cleaning by sliding the suction port body in the horizontal direction, the suction port body will not turn upside down due to the load from the surface to be cleaned. In addition, since the concave-convex engagement between the convex part of the engaging part and the corresponding concave part prevents the suction port body from inverting, compared to the conventional structure using a spring, the rotation of the suction port body is prevented. The contact part with the tube does not wear out, and the convex part protrudes in the axial direction of the rotating tube, so there is no chance of gaps forming and rattling, or leakage air entering and reducing suction power.
It has excellent durability, can be easily assembled with only the suction port body and the rotary tube, and does not require any other parts, and can be obtained at low cost.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing one embodiment of the suction port body of the present invention, Fig. 2 is a longitudinal sectional view of the same, and Fig. 3 is a second
4 is a perspective view of the rotary tube, FIG. 5 is a perspective view of the upper case, FIG. 6 is a perspective view of the lower case, and FIG. 7 is a perspective view of another embodiment. 8 is a diagram showing the inverted state of the suction port body, FIG. 9 is a vertical cross-sectional view of a conventional suction port body, and FIG. 10 is a connection part of the same rotary pipe as above. FIG. 11...Suction port body, 12...Suction port, 17...
...Rotating tube attachment port, 18... Rotating tube, 24... Concave portion, 25... First flange, 26... Second flange, 28... Engaging portion, 29... Convex portion.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A suction port body with a suction port opened at the bottom and a rotary pipe attachment port formed at the rear that communicates with the suction port, and a circumferential a rotating tube rotatably connected in a direction, an annular fitting portion is formed at the opening edge of the rotating tube attachment port formed at the rear of the suction port body, and an annular fitting portion is formed at the outer circumference of the base end of the rotating tube. an annular first flange and a second flange that are in sliding contact with the inside and outside of the fitting portion of the rotary tube are formed apart, and the suction is attached to either the first or second flange of the rotary tube. An engaging part is formed that elastically presses in the axial direction toward the inside or outside of the fitting part formed at the rotating tube attachment port of the mouth body, and the engaging part formed on the rotating tube is connected to the fitting part of the suction port body. A convex portion facing the sliding surface with the fitting portion formed at the opening edge of the rotary tube attachment port of the suction port body is provided, and the rotary tube is attached to the fitting portion formed at the opening edge of the rotary tube attachment port of the suction port body. A suction mouth body for a vacuum cleaner, characterized in that a concave portion is formed to engage with a convex portion protruding from an engaging portion of the vacuum cleaner. (2) The engaging portion formed on the rotary tube is formed at a plurality of locations along the sliding surface with the fitting portion formed on the opening edge of the rotary tube attachment port of the suction port body, and each of the engaging portions is formed on the rotating tube. 2. The suction port body for a vacuum cleaner according to claim 1, wherein the convex portions are formed in each portion, and the number of convex portions is greater than the number of concave portions. (3) The recess formed in the fitting portion of the opening edge of the rotary tube attachment port of the suction port body is in sliding contact with the fitting portion formed in the opening edge of the rotary tube attachment port of the suction port body. It is formed to a predetermined width along the
The suction port body for a vacuum cleaner according to claim 1, wherein the width of the convex portion is narrower than the width of the concave portion, and the convex portion is slidable within the concave portion.