JPH09173253A - Electric cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain excellent assembling processability by decreasing the number of assembling parts. SOLUTION: A joint pipe 10 is pivoted so as to be freely raised or laid down on a floor nozzle 5. A cylindrical part 12 projecting toward a cleaner main body is formed on the joint pipe 10 and a connection pipe 6 is externally mounted on this cylindrical part 12 and is freely rotatably pivoted on its shaft. An annular recessed channel 14 is formed on the cylindrical part 12 of the joint pipe 10 and an elastically deformable stop piece 17 corresponding to this recessed channel 14 is integrally formed to the connecting pipe 6. In addition, a cover 19 is fixed on the outside of the connecting pipe 6 and the stop piece 17 of the connecting pipe 6 is pushed out into the recessed channel 14 of the joint pipe 10 by means of this cover 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner in which a floor nozzle is connected to a suction pipe of a cleaner body, and more particularly to a mounting structure for a connection pipe pivotally attached to the floor nozzle.

[0002]

2. Description of the Related Art A conventional general electric vacuum cleaner is a vacuum cleaner in which a flexible hose is connected to a cleaner body, a flexible suction pipe is connected to the flexible hose, and a floor nozzle is connected to the suction pipe. Alternatively, there is a vertical vacuum cleaner in which the flexible hose is omitted and the floor nozzle is directly connected to the suction pipe of the cleaner body.
In such an electric vacuum cleaner, the cylinder portion is projected to the cleaner body side at the rear part of the floor nozzle so that the suction pipe connected to the floor nozzle rotates not only in the standing direction but also in the twisting direction with respect to the floor nozzle. The installed T-shaped joint pipe is rotatably and pivotally mounted, and the connecting pipe is rotatably mounted on the cylindrical portion of the joint pipe, and the connecting pipe is inserted and connected to the suction pipe connected to the cleaner body. ing. A structure for preventing the connection pipe rotatably inserted in this joint pipe from coming off is described in Japanese Utility Model Publication No. 6-42591. This is because an annular groove is formed on each of the outer peripheral surface of the tubular portion of the joint pipe and the inner peripheral surface of the connecting pipe, and the C-shaped retaining ring is bent inward in the groove formed in the joint pipe. Insert the joint pipe into the connecting pipe while retaining the retaining ring, so that the elastic return force of the retaining ring fits into the concave groove of the connecting pipe and joint pipe, thus retaining the retaining pipe. The joint pipe and the connecting pipe are prevented from coming off through the ring.

As a retaining means other than such a retaining ring, for example, a concave groove is formed only in the tubular portion of the joint pipe, and a pair of holes are formed in the connecting pipe at a portion corresponding to the concave groove. A connecting pipe configured to fit a retaining member into the hole from the outside of the connecting pipe and insert the lower end of the retaining member into the groove to connect the joint pipe and the connecting pipe in a retaining state. The mounting structure of is also known.

[0004]

As described above, in the conventional vacuum cleaner, the retaining ring and the retaining member are required to connect the connecting pipe to the joint pipe pivotally attached to the floor nozzle in a retaining state. As a result, not only will the number of parts to be assembled increase, but since these retaining rings and retaining members are small and delicate parts, not only are they easy to lose during assembly, but such small parts can be There is a problem that the work of fitting in the groove is troublesome and the workability of assembling is poor.

An object of the present invention is to provide an electric vacuum cleaner that solves such problems, reduces the number of parts, and simplifies the assembly work.

[0006]

In order to achieve the above object, a vacuum cleaner according to the present invention has a cleaner body, a suction pipe directly or indirectly connected to the cleaner body, and a suction pipe connected to the suction pipe. A floor nozzle to be mounted, and a rear portion of the floor nozzle having a tubular portion projecting toward the cleaner body
In an electric vacuum cleaner in which a character-shaped joint pipe is pivotally attached in an undulating manner, and a connection pipe to be inserted into the suction pipe is pivotally attached to the tubular portion in a rotatable manner, an annular groove is provided in the tubular portion. An elastically deformable retaining piece corresponding to the groove is integrally formed on the connecting pipe, and a cover for pressing the retaining piece to the outside of the connecting pipe to insert the retaining piece into the groove is provided. It is a thing.

According to the present invention, with the above structure, the joint pipe pivotally attached to the floor nozzle is covered with the connecting pipe, and the cover is fixed to the outside of the connecting pipe.
The retaining piece integrally formed with the connecting pipe is pushed out into the concave groove of the cylindrical portion, so that the joint pipe and the connecting pipe can be rotatably connected in a retaining state.

[0008]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 5 show an embodiment of the present invention. First, the overall configuration of the electric vacuum cleaner of the present invention will be described with reference to the perspective view of FIG.

In the cleaner 1, a foldable handle 2 is pivotally attached to the upper part, and a suction pipe 4 communicating with the dust collecting chamber is formed in the lower part of a cleaner body 3 having a dust collecting chamber (not shown) inside. The suction pipe 4 is directly connected to a connection pipe 6 attached to the rear portion of the floor nozzle 5.

As shown in the exploded perspective view of FIG. 4, the floor nozzle 5 is divided into an upper case 5A and a lower case 5B which are vertically divided.
And curved portions 7, 7 that are raised in a semicircular shape are formed on the rear edge sides of the upper and lower cases 5A and 5B, respectively, and a notch portion 8 that is cut out in a concave shape in the central portion of the curved portions 7, 7 is formed. , 8 are formed at the opposite positions of the upper and lower cases 5A, 5B, respectively. A joint pipe 10 that is connected to the connection pipe 6 is installed inside the curved surfaces 7 and 7 so that it can be undulated.

The joint pipe 10 has a horizontally long boss portion 11 having a peripheral surface portion 11A which substantially matches the curvature of the curved surfaces 7, 7 and a central portion of the boss portion 11 protruding toward the cleaner body 3 side. It is formed into a substantially T-shape including a cylindrical portion 12 for pivotally mounting the connecting pipe 6. Further, as shown in the sectional view of FIG. 1, the joint pipe 10 is formed with a through hole 13 that expands in diameter from the tubular portion 12 to the boss portion 11. Further, an annular concave portion is provided near the tip of the tubular portion 10. Groove 14 is formed.

The connecting pipe 6 has a dogleg shape with its lower end bent forward and has an inner diameter substantially equal to the outer diameter of the cylindrical portion 12 of the joint pipe 10. Tube
It is fitted onto 12 and rotatably assembled. And the cylinder
1 to 3 for preventing the 12 and the connecting pipe 6 from coming off.
As shown in the sectional view, a U-shaped slit 16 is formed on both sides of the tubular portion 12 in correspondence with the recessed groove 14, and an elastically deformable retaining piece 17 is integrally formed by the slit 16. A protrusion (18) protruding outward is formed at the tip of the retaining piece (17). Further, a cover 19 covering the rear surface side of the connection pipe 6 is fixed to the lower portion of the connection pipe 6, and the cover 19 is fixed.
A pressing protrusion 20 corresponding to the retaining piece 17 is provided on the inner surface side of the. Then, screw the cover 19 onto the connection pipe 6.
By fixing by means of 21, the projections 18 of the retaining piece 17 are pressed by the pressing protrusions 20 formed on the cover 19, and the retaining piece 17
Is pushed out into the concave groove 14 formed in the cylindrical portion 10.

On the inner surface side of the cover 19, an operation lever 22 having a lock claw 22A having a triangular cross section and a cylindrical push button 22B is assembled, and between the lock lever 22 and the connection pipe 6. The lock claw 22A and the pressing button 22B are urged so as to project from the hole 24 provided in the cover 19 by the spring 23 interposed in the. When the suction pipe 4 of the cleaner body 3 is inserted into the connection pipe 6,
The lock claw 22A is locked in the receiving hole 25 formed in the suction pipe 4 to prevent the suction pipe 4 and the connection pipe 6 from coming off, and the operation button 22A is pressed against the spring 23, whereby the lock claw 22A is pressed. And the receiving hole 25 are disengaged, and thus the suction pipe 4 and the connection pipe 6, and thus the cleaner body 3
And the floor nozzle 5 are detachably connected. Further, a rectangular frame-shaped rib 30 is integrally formed on the front surface side of the connection pipe 6, and the cover 19 is provided on the connection pipe 6.
When fixing the, the front edge of the cover 19 contacts the rib 30 and is positioned. Further, when the cover 19 is assembled with the cover 30 abutting against the rib 30, the cover 19 and the rib
Step portion of the entire peripheral surface of the connecting pipe 6 connected to the upper edge of 30
31 is formed, and this step portion 31 acts as a stopper when the suction pipe 4 is inserted into the connection pipe 6. In addition, reference numeral 35 in the drawing indicates the curved portions 7, 7 of the floor nozzle 5.
A pair of left and right casters pivotally supported on the half-split cylindrical portion 36 projecting on the side of the floor nozzle 37, a rotating roller pivotally supported on a shaft 38 provided on the bottom surface of the floor nozzle 5, 39 is an opening on the bottom surface of the floor nozzle 5. A brush provided along the rear end of the suction port 40, 41 is a mounting frame for the brush 39, and 42 are upper and lower cases 5 of the floor nozzle 5.
It is a decorative frame interposed between A and 5B.

The procedure for assembling the floor nozzle 5 of the present invention constructed as described above will be explained mainly with reference to the exploded perspective view of FIG. First, by assembling the upper and lower cases 5A, 5B of the floor nozzle 5 with the screws 43 via the decorative frame 42, the boss portion 11 of the joint pipe 10 is sandwiched between the curved surfaces 7, 7 of the cases 5A, 5B, and The joint pipe 10 and the caster 35 are rotatably pivotally attached to the floor nozzle 5 with the shaft portion 35A of the caster 35 sandwiched by the half-split cylindrical portion 36 projecting from the curved portions 7, 7. The joint pipe 10 has a cylindrical portion 12 with curved surfaces 7, 7
The body peripheral portion 11A of the boss portion 11 is sandwiched between the upper and lower cases 5A and 5B in a state of protruding from the notch portion 8 formed in the above, and the joint pipe 10 is rotatably and pivotally attached to the floor nozzle 5. Then, the connection pipe 6 is mounted on the joint pipe 10 by mounting the connection pipe 6 on the cylindrical portion 12 protruding from the cutout portion 8 of the curved surfaces 7, 7. At this time, the connection pipe 6 has a retaining piece 17 elastically deformable at a position corresponding to the concave groove 14 formed in the cylindrical portion 12.
Since the connection pipe 6 is externally formed on the tubular portion 12 of the joint pipe 10, the positions of the recessed groove 14 formed on the tubular portion 12 and the retaining piece 17 formed on the connection pipe 6 coincide with each other. . Then, the cover 19 is set on the rear surface side of the connection pipe 6 so that the cover 19 is abutted against the rib 30 formed on the front surface side of the connection pipe 6, and the cover 19 is fixed to the connection pipe 6 with the screw 21. The pressing projection 20 provided on the inner surface side of the cover 19 presses the projection 18 of the retaining piece 17, and the retaining piece 17 is pushed out into the concave groove 14 of the tubular portion 10 formed in the joint pipe 10. 10 and the connecting pipe 6 are prevented from coming off.

Therefore, the connection pipe 6 is pivotally attached to the joint pipe 10 which is pivotally attached to the floor nozzle 5 so as to be able to rise and fall, and the connection pipe 6 is pivotally attached so that the connection pipe 6 is not removed.
By inserting it into the suction pipe 4 of
On the other hand, the floor nozzle 5 is mounted so as to be vertically and horizontally rotatable.

As described above, in this embodiment, when the connecting pipe 6 is assembled to the joint pipe 10 pivotally attached to the floor nozzle 5 so as to rise and fall, the connecting pipe 6 is externally mounted on the tubular portion 12 of the joint pipe 10. After that, simply by fixing the cover 19 to the connection pipe 6, it is extremely easy without performing the troublesome work of fitting fine parts such as the retaining member and the retaining ring into the small hole or the groove as in the conventional example described above. The connection pipe 6 can be assembled to the connection pipe, the efficiency of the assembling work can be improved, and the connection pipe 6 is integrally formed with the retaining piece 17 that engages with the concave groove 14 of the joint pipe 10. The number of parts can be reduced. Moreover, in this embodiment, the cover 19 for pressing the retaining piece 17 into the groove 14 is a lock lever for detachably attaching the suction pipe 4 and the connection pipe 6 of the cleaner body 3.
By using the cover 19 with the 22 assembled, the retaining piece 17 is pushed into the groove 14 by using the indispensable assembling components in such a configuration, so that it is special for preventing the connection pipe 6 from coming off. The number of parts to be assembled can be reduced as much as possible without using separate parts.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the present invention. For example, the shapes of the retaining pieces 17 and the cover 19 are not limited to those in the above-mentioned embodiment, and may be selected appropriately. Also,
In the above-mentioned embodiment, the pressing projection 20 formed on the cover 19 prevents the retaining piece.
Although an example in which the projection 18 of 17 is pressed against is shown, if the projection 18 protruding at the tip of the retaining piece 17 is made to largely project from the peripheral surface of the suction pipe 4, the pressing projection 20 formed on the cover 19 will be formed. It is also possible to omit and omit the retaining piece 17 directly into the groove 14 by the cover 19. Further, as the cleaner 1, the vertical cleaner 1 in which the suction pipe 4 is directly connected to the cleaner main body 3 and the floor nozzle 5 is connected to the suction pipe 4 is shown. It is also applicable to a vacuum cleaner in which a suction pipe is connected to the main body via a flexible hose and a floor nozzle is connected to this suction pipe, and the basic structure of the vacuum cleaner 1 may be set appropriately. is there.

[0018]

According to the vacuum cleaner of the present invention, a vacuum cleaner body,
A suction pipe directly or indirectly connected to the cleaner body, and a floor nozzle attached to the suction pipe are provided, and a cylinder portion projecting toward the cleaner body side is provided behind the floor nozzle. In an electric vacuum cleaner in which a T-shaped joint pipe is pivotally attached in an up-and-down manner, and a connection pipe to be inserted into the suction pipe is pivotally attached to the tubular portion in a rotatable manner, an annular groove is provided in the tubular portion. An elastically deformable retaining piece is integrally formed with the connection pipe in correspondence with the groove, and a cover for pressing the retaining piece to the outside of the connection pipe to insert the retaining piece into the groove is provided. Therefore, when assembling the connection pipe to the joint pipe pivotally attached to the floor nozzle, the joint pipe is covered with the connection pipe and the cover is fixed to the connection pipe. Stops integrally formed on the Since the connection pipe is retained is extruded and, together with possible to reduce the assembling parts,
The work of assembling the connecting pipe can be made more efficient.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1 above.

3 is a sectional view taken along line BB of FIG. 1 above.

FIG. 4 is an exploded perspective view of the upper floor nozzle.

FIG. 5 is an overall perspective view of the same vacuum cleaner.

[Explanation of symbols]

 1 Vacuum cleaner 3 Vacuum cleaner body 4 Suction pipe 5 Floor nozzle 6 Connection pipe 10 Joint pipe 12 Cylindrical part 14 Recessed groove 17 Stopper piece 19 Cover

Claims (1)

[Claims] 1. A vacuum cleaner main body, a suction pipe directly or indirectly connected to the vacuum cleaner main body, and a floor nozzle attached to the suction pipe. The vacuum cleaner main body is provided behind the floor nozzle. An electric vacuum cleaner in which a substantially T-shaped joint pipe having a tubular portion projecting to the side is pivotally pivoted in an up-and-down manner, and a connection pipe to be inserted into the suction pipe is pivotally pivotally pivoted in the tubular portion. An annular recessed groove is provided in the cylindrical portion, and an elastically deformable retaining piece is integrally formed with the connection pipe in correspondence with the recessed groove, and the retaining piece is pressed to the outside of the connection pipe to secure the retaining piece. An electric vacuum cleaner comprising a cover to be inserted into the groove.