JPH04210031A - 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]

[00011

[Industrial Field of Application] The present invention relates to a vacuum cleaner, and particularly to a vacuum cleaner used in general households. [0002] The structure of a conventional vacuum cleaner will be explained with reference to FIGS. 4 to 6. [In Figure 00031, the vacuum cleaner body 1 (hereinafter referred to as
A dust collection chamber 2 is provided inside the main body (hereinafter referred to as the main body), and a check valve 5 having a lip portion 4 for airtightly holding a hose connecting pipe 3 (hereinafter referred to as the connecting pipe) in the front is disposed in the lower main body 6. The connecting pipe 3 is held on the front cover 8 by a buckle 7, and a paper bag 1 having a mouth core 9 is placed on the dust collection chamber side of the check valve 5.
0 was held by the mouth core holder 11. [0004]

[Problems to be Solved by the Invention] However, in the configuration of the conventional vacuum cleaner as described above, when the connecting pipe 3 is inserted parallel to the check valve 5, the gap with the lip portion 4 is not airtight. However, there is clearance between the buckle 7 and the front cover 8 to ensure good installation, and the front cover 8 also has clearance, so when the main unit is being moved, the front When the connecting tube 3 is in an inclined state with respect to the cylindrical portion of the cover 8, a gap 12 is generated between the connecting tube 3 and the lip portion 4. [0005] This has the disadvantage that outside air directly enters the dust collection chamber 2, resulting in a reduction in suction power. [0006] Furthermore, if the inner diameter of the lip portion 4 is made smaller to improve airtightness, it becomes difficult to attach and detach the connecting tube 3 to the main body l, which may impair usability. [0007] An object of the present invention is to solve this problem and provide a highly efficient vacuum cleaner that does not always suffer from loss of suction power. [0008]

[Means for Solving the Problems] In order to solve the above-mentioned problems, the vacuum cleaner of the present invention includes a cylindrical holding part for holding the connecting pipe and maintaining airtightness, and fixing the holding part to the main body. A thin part is used to connect the fixed part to the fixed part. Further, the minimum inner diameter portion of the lip portion is formed to have a substantially circular cross-sectional shape, and the minimum inner diameter portion having the substantially circular cross-sectional shape is connected to the inner diameter portion of the check valve by a thin wall portion. [0009]

[Function] With this configuration, the vacuum cleaner of the present invention connects the holding part that keeps airtight between the connecting pipe and the lip of the check valve and the fixing part that fixes the holding part to the main body with a thin wall part. Therefore, even if the connecting tube moves or swings vertically and horizontally, the thin wall portion absorbs this shaking, so that airtightness is always maintained between the connecting tube and the lip portion. Furthermore, even when the thickness of a portion of the lip portion is made thinner, the thin portion similarly expands and contracts, absorbing vertical and horizontal vibrations caused by movement of the connecting tube. [00101] [Embodiment] A vacuum cleaner according to a first embodiment of the present invention will be described below with reference to FIGS. 1 to 3. [00111 In Figure 00111, the main body 13 of the vacuum cleaner has a dust collection chamber 14 at the front for storing dust sucked in through a floor nozzle, an extension pipe, and a hose (not shown), and an upper main body 15 and a lower main body at the rear. An electric blower 17, a cord winding device (not shown), etc. are housed in the cable 16. [0012] A check valve 18 is attached to the front of the dust collection chamber 14 so as to fit into the front of the lower main body 16 . [0013] A front cover 19 is attached to the front thereof, and a paper bag 21 held by a mouth core 20 is held by a mouth core holder 22 on the dust collection chamber side of the check valve 18 . [00141 The locking relationship between the check valve 18 and the hose connection pipe 23 of this embodiment will be explained with reference to FIG. The lip part 24 of the connecting pipe 23 is formed on the inner diameter part of the check valve 18, and the holding part 25
and a fixing part 26 to the lower main body 16 are provided on the outer periphery thereof, and a thin part 27 connects them. [00151 In the second embodiment of the present invention, as shown in FIG. The inner diameter portion of the check valve 25 is connected by a thin wall portion 30. [00161] As described above, the connecting tube 23 is held by the buckle 20 for locking to the front cover 19, but a clearance is provided between the front covers 19 to improve the ease of mounting. [0017] Therefore, even after the connecting pipe 23 is fitted with the check valve 25, it swings vertically and horizontally. [0018] As a result, in the past, a clearance was created between the lip portion 29 and the connecting pipe 23, resulting in a loss of suction force, but in the first configuration, the fixing portion 26 of the check valve 18 to the main body 16 and the By tying the holding part 25 with the thin part 27,
This thin wall portion 27 absorbs the vibration of the connecting pipe 23 in the vertical and horizontal directions and prevents the occurrence of clearance. [0019] In the second configuration, the lip portion 29 has a thin wall portion 30.
The thin wall portion 30 absorbs the swinging of the connecting tube 23 vertically and horizontally, thereby similarly preventing the occurrence of clearance with the connecting tube 23. [00201] [Effects of the Invention] As is clear from the description of the embodiments above, according to the vacuum cleaner of the present invention, the vacuum cleaner of the present invention does not allow the main body to be pushed over obstacles, hit against walls, or by strongly pulling the hose during cleaning. The hose is often moved in all directions, and if a clearance is created between the hose connection pipe and the check valve, air leaks from that area and the suction force decreases. By absorbing the vertical and horizontal swings of the connecting tube, the airtightness between the lip and the connecting tube is always maintained. [00211 Therefore, stable suction force can always be ensured. Moreover, the unpleasant beeping noise caused by the clearance between the connecting pipe and the check valve can also be prevented.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view showing the overall configuration of a vacuum cleaner according to a first embodiment of the present invention.

[Fig. 2] A vertical cross-sectional view showing an enlarged view of the fitted state of the hose connection pipe and check valve.

FIG. 3 is an enlarged vertical cross-sectional view showing a fitted state between a hose connection pipe and a check valve of a vacuum cleaner according to a second embodiment of the present invention;

[Fig. 4] Vertical cross-sectional view showing the overall configuration of a conventional vacuum cleaner

[Figure 5
】Longitudinal cross-sectional view showing an enlarged view of the fitted state of the hose connection pipe and check valve.

[Fig. 6] Longitudinal cross-sectional view of the lower back explaining the movement shown in Fig. 5.

[Explanation of symbols]

13 @ Vacuum cleaner body 14 Dust collection room 18.28 Check valve 23 Hose connection pipe 24, 29 Lip lip part 25 Holding part 26 Fixed part 27.30 Thin wall part

Claims (2)

[Claims] Claim 1: A dust collection chamber for storing dust is provided in front of the vacuum cleaner body, and a check valve is provided in a part of the dust collection chamber to fit with a hose connection pipe to maintain airtightness. The check valve has a cylindrical holding part having a lip part for maintaining airtightness with the hose connection pipe, and a fixing part for fixing the holding part to the vacuum cleaner body, A vacuum cleaner in which the part and the fixed part are connected by a thin part. 2. The electrical appliance according to claim 1, wherein the minimum inner diameter portion of the lip portion has a substantially circular cross-sectional shape, and the minimum inner diameter portion having the substantially circular cross-sectional shape and the inner diameter portion of the check valve are connected by a thin wall portion. Vacuum cleaner.