JPH04200424A - Suction inlet of vacuum cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the structure of a suction port that fits onto the end of an extension tube of a vacuum cleaner. [Prior Art] As described in Japanese Patent Application Laid-open No. 1-314537, conventional devices have problems in that the joint does not fit into the extension pipe or easily comes off even if it is connected, depending on what the clamp has or does not have. Problems such as air leakage occurred. [Problems to be Solved by the Invention] In the above-mentioned conventional vacuum cleaner suction port, when a joint is fitted to an extension pipe having a clamp, the contact area between the joint and the extension pipe is small at the place where the claw of the clamp hits. However, it has the disadvantage that the fitting part comes off when the mouthpiece is used. A first object of the present invention is to provide a mouthpiece in which the fitting part does not come off, regardless of whether the extension pipe into which the joint of the mouthpiece is fitted has a clamp. A second object of the present invention is to change the fitting angle of the fitting part of the suction mouth body with respect to the surface to be cleaned so that it is easier to use. It is an object of the present invention to provide a suction spout whose angle can be changed and is designed for ease of use. 1 [Means for solving the problem] In order to achieve the above first object, a concave groove is provided in the tapered joint part so that the claws of the clamps of the extension pipe fit together. I try not to come off. Even if the extension tube does not have a clamp, the joint has a taper so that it does not come off due to frictional resistance. In order to achieve the second object, two or more grooves are provided so that two or more fitting angles between the extension pipe and the joint can be selected. [Operation] When the suction joint is fitted to the extension pipe (7), the claw of the clamp of the extension pipe fits into the groove provided in the joint.
The fitting will not separate from the extension pipe unless the clamp claw is released from the groove. In addition, even if there is no clamp on the extension pipe side, the tapered part provided on the fitting fitting part fits with the tapered part provided on the extension pipe inner fitting part, so that friction is generated. It has a structure that prevents it from coming off. Also, if the extension tube does not have a clamp,
Since it is only a bar fit, the joint and extension pipe are rotatable.
) has a clamp, the clamps and clamps fit into the concave grooves, so rotation is impossible. Therefore, by providing two or more concave grooves, although it is not rotatable, it can have several types of fitting angles, and can be used in 51 easy-to-use methods in response to changes in the surface to be cleaned. [Example] Hereinafter, an example of the present invention will be described based on the drawings. FIG. 1 is a view of the concave groove 1 provided at the tip of the joint 3, viewed from the side. The joint fitting part t- has a tapered part 2 that comes into contact with the tapered part of the extension pipe of the mating part. As shown in FIG.
1, the claws 7 are structured to engage with the groove 1a or the groove 1b provided in the opposite direction. The clamp spring 6 presses down the clamp 5, and the claw part 7 comes off from the groove part, so that the joint comes out from the extension pipe. Although the concave groove portions 1a and 1b in FIGS. 1 to 3 are set at only two locations, by providing two or more locations, the joint angle can be variously selected. As shown in Figure 4, the joint 3 is connected to the mouthpiece body 8 by 360''
It has a rotatable mounting method, and the joint 3' indicates the position when the joint 3 rotates, and when the joint moves to 3 degrees, the groove 1 is initially
The clamp claw 7 that was previously engaged with the groove a now fits into the groove 1b. In this way, in response to changes in the cleaning surface, the joint 4 (4') is rotated 3606 degrees relative to the suction body 8, and at the same time, the joint 4 (4') is
(4') and the joint part of the main body extension tube 4 are also made rotatable 2,
This creates a more user-friendly suction port. [! ! Advantageous Effects] According to the present invention, since it is configured like a jounin, the following effects can be achieved. According to the vacuum cleaner suction port 1 according to claim 1.2, since the recess is provided in the joint fitting part, when the joint is attached to an extension pipe having a clamp in the fitting part, the classic claw part It fits into the recess and prevents the suction from coming out. Further, by providing several recesses, the fitting angle between the joint and the extension tube can be changed, and it can be used in an easy-to-use manner in response to changes in the surface to be cleaned. When fitted to the suction port for a vacuum cleaner according to claim 3, the joint fitting part is provided with a tapered part, and can be fitted with a main body side extension pipe without a clamp, so it can be fitted with a different type of joint fitting part. Can also be fitted with an extension tube.

[Brief explanation of the drawing]

FIGS. 1 to 4 show an embodiment of the present invention, in which FIG. 1 shows the concave portion of the joint fitting portion viewed from the 1-1° plane, and FIG.
Fig. 3 is a cross-sectional view of the concave portion viewed from the side, and Fig. 3 is a cross-sectional view of the part where the joint is fitted into the extension pipe with the clamp. Fig. 4 is a cross-sectional view showing the overall configuration. 1a, 1b Recessed portion 2...Joint tapered portion 3 Fitting 4 ・Extension tube 5-Clamp 6・Clamp spring 7 Clamp claw 8 Main body suction ['' $1 leap 1L

Claims (1)

[Scope of Claims] 1. In a vacuum cleaner suction port comprising a suction port body and a joint rotatably attached to the suction port through 360°, the tip of the joint, that is, the fitting part with the extension pipe A vacuum cleaner suction mouth characterized by having two or more concave grooves. 2. The concave groove part of the joint fitting part has a structure in which the claw part of the clamp provided on the fitting part of the main body side extension pipe fits into it, to prevent the suction mouth from coming off, and the joint fitting part has a taper. A suction port for a vacuum cleaner, which is characterized in that it can be fitted even with a main body extension tube without a clamp. 3. In the case of fitting with an extension pipe having a clamp, the suction mouthpiece for a vacuum cleaner is characterized in that the connection is made only by the fitting of the claws of the clamp and the groove, and there is almost no involvement of frictional fitting due to the tapered part.