JPH09187404A - Suction port of vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a remarkable improvement in the ease of use, by positioning a joint pipe to a suction port main body in the position where rotation stop projections are received and stopped by rotation stop walls, thereby preventing the suction port main body from being displaced even if the suction port main body collides with an obstacle such as a wall. SOLUTION: A vent 2 is turnable within 90 deg. formed between two positions where a rotation stop projection 8 and second rotation stop projection 9 are received and stopped by a rotation stop wall 17 and second rotation-stop wall 18, respectively, one being at the front and the other being at the rear. Further, two pairs of projections 19, which engage so that the projection of the vent 2 are situated between them when the vent 2 is positioned between both ends of a running area, are formed on the periphery of a recess part 15 facing a circular arc groove 16 and in two positions separated at an interval of 90 deg.. By the engagement of the projections of the vent 2 between the projections 19 on the side of the base, the vent 2 is positioned to the base between the both ends in the turning position, that is, to the main body of a suction port main body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction port of a vacuum cleaner, and more particularly to a suction port of a vacuum cleaner having excellent usability.

[0002]

2. Description of the Related Art Conventionally, as a suction port of an electric vacuum cleaner, a suction pipe body is rotatably provided to a cleaner body or a joint pipe for connecting the suction body to a connection pipe to the cleaner body. (See Japanese Patent Publication No. 63-28611, Japanese Utility Model Publication No. 3-19334, Japanese Patent Laid-Open No. 2-119144, etc.).

In the above-mentioned conventional suction port, the suction port body can be rotated 360 ° with respect to the joint pipe.
A positioning device is provided for positioning the suction inlet main body for each °, and as this positioning device, a click-stop system utilizing the elasticity of synthetic resin (Japanese Patent Publication No. 63-28611) is used.
No. JP-A-2-119144), and a ball-stop type click-stop method (actual fair 3-1933).
No. 4 gazette) is adopted.

[0004]

As described above, in the conventional example, since the rotation angle between the suction port body and the joint pipe is positioned by the click-stop method, when the suction port body hits a wall or a foot of a desk, for example. The positioning effect of the click stop may be canceled, the direction of the suction port body may change, and the direction may become unstable, which makes it extremely difficult to use.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a suction port of an electric vacuum cleaner which is excellent in usability.

[0006]

According to the present invention, there is provided a suction port of an electric vacuum cleaner comprising a suction port main body and a joint pipe pivotably connected to the suction port main body. Direction and a rotation blocking means formed of a rotation blocking wall that receives the rotation blocking protrusion in two positions at 90 ° intervals in the suction port body, and a position where the rotation blocking protrusion is received by the rotation blocking wall. And a positioning means for positioning the joint pipe in the suction port body.

When the joint pipe is swiveled, the joint pipe moves only during 90 ° in which the rotation preventing projection is received by the rotation preventing wall. Then, at the position where the rotation blocking projection is received by the rotation blocking wall, the joint pipe is positioned with respect to the suction port body by the positioning means. Here, even when the suction port body hits an obstacle such as a wall during use of the vacuum cleaner, the suction port body does not rotate in the direction in which the rotation blocking wall receives the rotation blocking protrusion. Therefore, at least in the direction in which this rotation does not occur, the direction of the suction port main body does not change, which improves usability.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION A suction port of an electric vacuum cleaner according to an embodiment of the present invention will be described below in detail with reference to the drawings.

As shown in the plan view of FIG. 1, the suction port according to this embodiment comprises a suction port body 1 and a vent 2 rotatably connected to the suction port body 1. As shown in the side view of FIG. 2, the suction port body 1 is provided with a case 3 that is divided into upper and lower parts, a base 4, and a brush 5 that is planted on the lower surface of the base 4.

As shown in the side view of FIG. 3 and the bottom view of FIG. 4, a cylindrical portion 6 is formed at the base end of the vent 2, and the outer surface of the cylindrical portion 6 is covered with an outer collar 7 over the entire circumference. Further, on the outer peripheral surface of the outer collar 7, trapezoidal rotation-preventing projections 8 having a trapezoidal shape in a plan view are provided at two positions 180 ° apart from each other. A second rotation preventing projection 9 extending from the outer peripheral surface of the cylindrical portion 6 to the outer peripheral surface of the outer brim 7 is provided on one side of the two locations below the outer brim 7, and the second rotation preventing projection 9 is arranged at a 180 ° back direction. In position,
A protrusion 10 is formed that protrudes slightly from the outer peripheral surface of the cylindrical portion 6.

As shown in the bottom view of FIG. 5 and the vertical sectional view of FIG. 6, the case 3 has a first rib 11 with which the upper surface of the outer collar 7 is in sliding contact with the upper surface of the rotation-preventing projection 8. The second rib 12 and the third rib 13 with which the side end surface of the rotation preventing projection 8 is slidably contacted are provided.
The cylindrical portion 6 is rotatably fitted in a circular hole 14 formed in the center of the cylinder and having the first rib 11 as a peripheral wall, and the pipe portion is led out to the outside of the suction port body 1.

As shown in the plan view of FIG. 7 and the vertical sectional view of FIG. 8, a cylindrical portion of the cylindrical portion 6 of the vent 2 below the outer flange 7 is rotatably fitted on the upper surface of the base 4. A circular concave portion 15 is formed, and an arc-shaped circular groove 16 in a plan view for moving the second rotation preventing projection 9 of the vent 2 is provided over about one quarter of one side of the concave portion 15. Has been done.

Rotation blocking walls 17 for receiving the rotation blocking protrusions 8 of the vent 2 from the front side or the rear side are formed on the front and rear sides of the upper surface of the base 4 so as to project upward.
The rotation blocking wall 17 is configured to be supported by the front and rear peripheral wall portions of the case 3 when the case 3 is assembled to the base 4.

A second rotation blocking wall 18 for receiving the second rotation blocking protrusions 9 is formed at both ends of the circular arc groove 16, and the vent 2 has the rotation blocking protrusions 8 and the second rotation blocking protrusions 9 respectively.
Can be swiveled over 90 ° received by the corresponding front or rear rotation blocking wall 17 or second rotation blocking wall 18, respectively.

Further, at the two positions of the circumferential surface of the concave portion 15 facing the circular arc groove 16 at 90 ° intervals, two pairs are engaged so that the protrusions 10 of the vent 2 are inserted when the vent 2 is located at both ends of the swivel region. Projections 19 are formed respectively,
By engaging the projection 10 of the vent 2 between the projections 19 on the side of the base 4, the vent 2 is positioned (click stop) with respect to the base 4 at both ends of the turning position, that is, with respect to the suction port body 1. I am trying to do it.

As shown in FIGS. 5 and 6, the case 3 is formed with a locking claw 20 to be combined with the base 4, and the base 4 has a locking claw 20 as shown in FIGS. 7 and 8. Engagement holes 21 into which 20 are engaged are formed, and as shown in FIGS. 9 and 10, after the case 3 and the vent 2 are combined, the engagement claws 20 are engaged with the engagement holes 21. As a result, the assembly of the vent 2, the case 3 and the base 4 is completed without using any screws, and the opening 2 at the center of the base 4 is completed.
2 and the vent 2 are communicated.

In this assembling, there is a direction in assembling the base 4 and the vent 2 (that is, the base 4 has 1
Since the arcuate groove 16 is formed on one side and the projection 19 is formed on the other side facing each other by 80 °, in order to improve the workability of the assembly work,
As shown in FIG. 7, a mark indicating the direction, for example, an arrow 24 is provided on the upper surface of the base 4. The arrow 24 can be provided by any method such as printing, engraving, padding, and sticking of a seal.

Further, as shown in FIG. 1, a mark 25 indicating the direction of the vent 2 is provided on the upper surface of the tip of the vent 2, and the rotation of the vent 2 around the circular hole 14 is provided on the upper surface of the case 3. A pair of marks 26 indicating both ends of the area are 90 ° from each other.
It is placed and set up. These marks 25, 26 allow the user to see at a glance whether the vent 2 is moving to either end of its rotation area and, if necessary, to position the vent 2 in any of its rotation areas. It can be moved to the end.

The vent 2 moved to the end of the rotating region is positioned at that position by the positioning means composed of the projection 10 of the vent 2 and the projection 19 of the base 4 (click stop).
Is done. Then, due to the rotation in a certain direction, the rotation blocking projections 8 and the second rotation blocking projections 9 come into contact with the corresponding rotation blocking walls 17 or the second rotation blocking walls 18 in the direction further from the positioned position. , Will be impossible to rotate. Therefore, when using this cleaner, if the suction port body 1 is in a direction in which it cannot rotate, even if the suction port body 1 hits a wall, a leg of a chair, a leg of a desk, etc., the suction port body 1 moves to the vent 2. There is no risk of rotation, so the direction of the suction port body does not change and it does not become difficult to use.

By the way, when the vent 2 is at the end of the rotational position, the user may erroneously rotate the vent 2 in the direction in which the rotation is restricted. Therefore, in this embodiment, in order to allow the user to understand at a glance the direction in which the vent 2 is rotated and the rotation range, the direction in which the vent 2 can rotate between the marks 26 on the upper surface of the case 2 is defined. Is provided with a double-headed arrow 27.

Of course, the mark 25 provided on the vent 2 may be provided on the case 3, and the mark 26 and the double-headed arrow 27 provided on the case 3 may be provided on the vent 2.

In the above-mentioned embodiment, the rotation preventing projection 8 and the second rotation preventing projection 9 and the rotation preventing wall 17 and the second rotation preventing wall 18 are provided in the upper and lower two stages, but the rotation preventing is further provided in the upper and lower stages. A protrusion and a rotation blocking wall may be provided, and the rotation blocking protrusion 8 and the rotation blocking wall 17 and the second rotation blocking protrusion 9 may be provided.
It is also possible to omit one of the first rotation prevention wall 18 and the second rotation prevention wall 18.

Further, although the two rotation blocking projections 8 and the rotation blocking walls 17 are provided in the circumferential direction, it is possible to omit either one of the rotation blocking projections 8 and the rotation blocking wall 17 in the circumferential direction.

[0024]

As described above, according to the present invention, the rotation-preventing projections projecting radially from the outer peripheral surface of the joint pipe and the rotation-preventing projections at 90 ° positions in the suction port body. Since rotation preventing means composed of a rotation preventing wall for receiving by the rotation preventing wall and positioning means for positioning the joint pipe in the suction opening body at a position where the rotation blocking projection is received by the rotation blocking wall are provided, rotation of the suction opening body is prevented. If the suction port body is operated so that force acts in the direction of the suction port, the positioning of the suction port body will not be broken even if the suction port body collides with an obstacle such as a wall. The change of direction and the instability of the direction of the suction port body are prevented, and the usability is greatly improved.

[Brief description of the drawings]

FIG. 1 is a plan view of the present invention.

FIG. 2 is a side view of the present invention.

FIG. 3 is a side view of the vent of the present invention.

FIG. 4 is a bottom view of the vent of the present invention.

FIG. 5 is a bottom view of the case of the present invention.

FIG. 6 is a vertical cross-sectional view of the case of the present invention.

FIG. 7 is a plan view of the base of the present invention.

FIG. 8 is a vertical cross-sectional view of the base of the present invention.

FIG. 9 is a vertical sectional front view of the present invention.

FIG. 10 is a vertical side view of the present invention.

[Explanation of symbols]

 1 Suction Port Main Body 2 Vent 8 Rotation Blocking Protrusion 9 Second Rotation Blocking Protrusion 10 Projection 17 Rotation Blocking Wall 18 Second Rotation Blocking Wall 19 Projection 25 Mark 26 Mark 27 Double-headed Arrow

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akihiko Shirota 2-5-5 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd.

Claims (3)

[Claims] 1. A suction block of an electric vacuum cleaner comprising a suction port main body and a joint pipe pivotally connected to the suction port main body, wherein a rotation preventing projection radially protruded from an outer peripheral surface of the joint pipe. , And the rotation preventing protrusion 90 in the suction port body.
There are provided a rotation blocking means composed of a rotation blocking wall which receives the rotation blocking wall at two places, and a positioning means which positions the joint pipe on the suction port body at a position where the rotation blocking wall is received by the rotation blocking wall. Vacuum cleaner suction port. 2. The suction port of the vacuum cleaner according to claim 1, wherein two or more rotation preventing means are provided. 3. The suction port of the vacuum cleaner according to claim 1, wherein marks are provided on the upper surfaces of the suction port body and the joint pipe to indicate the rotation range and the rotation direction of each other.