JP2008099855A - Vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum cleaner wherein a check valve is not clamped between a collar and a seal part when mounting a dust collecting bag. <P>SOLUTION: The vacuum cleaner includes: a cleaner body 1 provided with a motor-driven blower 4 and a dust collecting chamber 5; a suction inlet 6 communicating with the dust collecting chamber 5; a dust collecting bag 9 freely detachably mounted on the dust collecting chamber 5 from above; a collar 11 attached to the peripheral edge of the suction port 10 of the dust collecting bag 9; a dust collecting lid 14 for covering the dust collecting chamber 5; the check valve 13 which is provided with a seal part 13b to be closely attached to the collar 11 and prevents the leakage of the dust; and a connection pipe 7 connected to the suction inlet 6. The check valve 13 is divided into several parts, and the length of the divided valve 13d on the lower side is made shorter than the length of the valve 13d on the upper side. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a check valve for preventing the backflow of dust.

  In general vacuum cleaners, an intake port communicating with the dust collecting chamber is provided in front of the vacuum cleaner body, and a connection pipe is connected to the intake port. In the dust collection chamber, a dust collection bag for collecting dust is detachably mounted from above, and a check valve having a seal portion corresponding to the mount of the dust collection bag is provided.

The check valve is radially divided into a plurality of parts, and each of the divided valves is configured such that when the connection pipe is connected to the intake port, the end of the connection pipe hits to open the intake port. When the connection pipe is pulled out from the intake port, each valve is closed, so that the dust collected in the dust bag by the check valve does not leak from the dust bag. (Patent Document 1)
However, since the center of the radial division is divided substantially at the center of the check valve, the length of each divided valve is the same, and in the state where the connection pipe is connected to the intake port, A significant portion of the valve protrudes beyond the seal. Therefore, when trying to attach the dust bag with the connection pipe connected to the air inlet, the valve located below is sandwiched between the seal part and the mount, and a gap is formed between the seal part and the mount. There was a disadvantage that dust leaked from this gap.
JP-A-5-285078 (A47L 9/10)

  The present invention has been made in view of the above disadvantages, and an object thereof is to provide a vacuum cleaner in which a check valve is not sandwiched between a mount and a seal portion when a dust bag is attached. .

  A first means for solving the above-described problem is a vacuum cleaner main body having an electric blower and a dust collection chamber, an intake port communicating with the dust collection chamber, and a detachable attachment to the dust collection chamber from above. A dust collecting bag, a mount attached to the periphery of the suction port of the dust collecting bag, a dust collecting lid that covers the dust collecting chamber, and a seal portion that is in close contact with the mount, and a check that prevents leakage of dust A vacuum cleaner comprising a valve and a connection pipe connected to the intake port, wherein the check valve is divided into a plurality of parts, and the length of the divided lower valve is set to the upper side It is characterized by being shorter than the length of the valve.

  Further, a fin portion may be formed inside the seal portion.

  Moreover, you may form the step part dented in the said connection pipe side in the said check valve.

    According to the first aspect of the present invention, the length of the divided lower side valve is shorter than the length of the upper side valve. Therefore, in the lower side valve with each valve opened, the seal The part which protrudes from a part decreases. Therefore, when the dust collection bag is inserted from above and mounted in the dust collection chamber with the connection pipe connected to the intake port, the seal portion and the mount of the dust collection bag are interposed between the seal portion and the mount of the dust collection bag. Since it can be mounted without interposing the valve on the lower side of the check valve, it is possible to prevent the leakage of dust due to the gap.

  According to claim 2 of the present invention, the fin portion can prevent dust from entering between the seal portion and the mount of the dust collection bag, so that the sealing performance can be improved and suction can be performed. The effect of being able to guide the dust to be collected to the dust bag is obtained.

  According to the third aspect of the present invention, the check valve can be fully opened by the step portion without interfering with the fin portion, so that the sucked dust is smoothly caught without being caught on the check valve. There is an effect that it can be guided into the dust bag.

  An embodiment of the present invention will be described below with reference to FIGS.

  FIG. 1 is a perspective view of a vacuum cleaner body of an electric vacuum cleaner according to an embodiment of the present invention. FIG. 2 is a front view of the cleaner body as viewed from the front. FIG. 3 is a side sectional view of the cleaner body. FIG. 4 is a side cross-sectional view when a connection pipe is connected to the cleaner body. FIG. 5 is a perspective view of the check valve. FIG. 6 is an enlarged cross-sectional view of a main part in FIG. 7 is an enlarged cross-sectional view of a main part in FIG. FIG. 8 is a view showing the relationship between the hand grip and the fingertip when carrying the vacuum cleaner main body. FIG. 9 is a view showing a state in which the gap attachment is housed in the cleaner body.

  Reference numeral 1 denotes a vacuum cleaner main body of the present invention. A pair of rear wheels 2 are provided on both sides on the rear side, and one front wheel 3 is provided in the center of the bottom surface. The vacuum cleaner main body 1 can be easily moved. It can be done.

  4 is an electric blower disposed behind the cleaner body 1, and a dust collection chamber 5 is formed in front of the electric blower 4. The dust collection chamber 5 is located on the front side of the cleaner body 1. It communicates with the substantially circular intake port 6 formed in the.

  7 is a connection pipe that is detachably connected to the intake port 6, and a hose 8 is connected to the other end. An extension pipe and a floor suction tool (both not shown) are connected to the hose 8 so that dust sucked from the floor suction tool is carried to a dust collection bag 9 described later.

  9 is a dust collection bag that collects the dust sucked from the floor suction tool and is detachably attached to the dust collection chamber 5. The suction port 10 and a mount attached to the periphery of the suction port 10 11. The dust bag 9 is attached to the dust collection chamber 6 by fitting the lower end of the mount 11 into the bottom groove of the dust collection chamber 5 and sandwiching the upper end of the mount 11 with a clamp 12.

  Reference numeral 13 denotes a substantially circular check valve made of an elastic body, and the cylindrical portion 13a is fitted into the inner peripheral surface of the intake port 6 facing the dust collection chamber 5 side. The check valve 13 opens and closes the intake port 6 and the cylindrical portion 13a, a seal portion 13b having a semicircular cross section, a substantially circular fin portion 13c formed inside the seal portion 13b, and the intake port 6. And a plurality of divided valves 13d and a stepped portion 13e recessed toward the connection pipe 7 side.

  The seal portion 13b is in close contact with the mount 11 to improve the sealing performance, and the fin portion 13c prevents dust from entering between the seal portion 13b and the mount 11, and more The sealing performance is improved.

  The check valve 13 is radially divided into a plurality of parts, and this division method is performed so that the center 13f of the radial division is located at a position shifted downward with respect to the center of the check valve 13. In the embodiment, it is divided into 14) and further divided so that the surface area of each of the divided valves 13d is substantially equal.

  In a state where the connection pipe 7 is not connected to the intake port 6, the valve 13 d divided as shown in FIGS. 3 and 6 closes the intake port 6 and collects in the dust bag 9. The dust is prevented from leaking from the dust bag 9. When the connection pipe 7 is connected to the intake port 6, the end of the connection pipe 7 comes into contact with all the divided valves 13d, and the valve 13d is connected to the intake port 6 as shown in FIGS. Is pushed in the direction of opening (the direction of the dust bag 9 side). In the opened state of the valve 13d, the center 13f of the radial division is divided so as to be shifted downward with respect to the center of the check valve 13, so that the division is performed as it falls downward. The length of the valve 13d is gradually shortened, and in the valve 13d located on the lower side, the portion protruding from the seal portion 13b is reduced.

  Therefore, when the dust collection bag 9 is inserted from above and mounted in the dust collection chamber 5 with the connection pipe 7 being connected to the intake port 6 (the valve 13d is opened), the seal Since the divided valve 13d on the lower side can be mounted between the portion 13b and the mount 11, the dust can be prevented from leaking through the gap.

  Further, since the step portion 13e is formed so as to be recessed toward the connection pipe 7, the divided valve 13d can be fully opened (open substantially horizontally) without interfering with the fin portion 13c. In addition, the sucked dust can be smoothly guided into the dust bag 9 without being caught on the divided valve 13d, and a decrease in intake resistance is suppressed.

  Reference numeral 14 denotes a dust collection cover that covers the dust collection chamber 5 that is open at the top. The dust collection cover 14 is openably and closably attached to the main body 1 of the cleaner, and can be opened and closed when the dust collection bag 9 is attached and detached. Yes.

  15 is a gap attachment used when cleaning the gap portion, and has a flat nozzle portion 15a having a suction port formed at the tip, and a substantially circular connecting portion 15b continuous from the nozzle portion 15a. Yes.

  Reference numeral 16 denotes a bristle brush rotatably provided on the nozzle portion 15a of the gap attachment 15. The bristle brush 16 can be rotated and used according to the state of the surface to be cleaned.

  Reference numeral 17 denotes an attachment storage chamber for storing the gap attachment 15 formed on the upper surface of the dust collecting lid 14, and the hand insertion portions 18 into which a hand can be inserted are provided on both sides for easy removal of the gap attachment 15. Is formed. The gap attachment 15 is stored in the attachment storage chamber 17 with the bristle brush 16 closed, but the hand insertion portion 18 interferes with the bristle brush 17 as shown in FIG. It is formed at a position that does not. Therefore, even if a hand is inserted into the hand insertion portion 18, the gap attachment 15 can be taken out without touching the bristle brush 16, so that the hygiene can be improved.

  Reference numeral 19 denotes a transparent tool cover that covers the attachment storage chamber 17 and is attached to the dust cover 14 so as to be freely opened and closed, and can be opened and closed when the gap attachment 15 is attached and detached. Since the tool cover 19 is transparent, the storage state of the gap attachment 15 can be easily confirmed.

  Reference numeral 20 denotes a handle portion formed on the bottom surface on the front side of the vacuum cleaner body 1, which is a space whose cross section is recessed in an inverted L shape as shown in FIG. 7. When carrying the vacuum cleaner main body 1, it is possible to lift the vacuum cleaner main body 1 while tilting the vacuum cleaner main body 1 by placing a hand on the handle portion 20, and when the vacuum cleaner main body 1 is tilted, A finger joint hits the corner portion 21 of the handle portion 20, and the weight of the cleaner body 1 is concentrated on the finger joint, causing a problem that the fingertip hurts. Therefore, in order to solve this problem, the inventors of the present application form an inclined surface 22 that is inclined toward the front side of the cleaner body 1 at the corner portion 21 of the handle portion 20. With this configuration, even when the cleaner body 1 is tilted by placing a hand on the handle portion 20, the weight of the cleaner body 1 can be received over a wide range of the inclined surface 22 as shown in FIG. Therefore, the weight applied to the joint of the finger can be dispersed, and the problem that the fingertip hurts is eliminated.

  Operation | movement of the vacuum cleaner in the said structure is demonstrated.

  When an operation switch (not shown) is operated, the electric blower 4 is driven, and dust is sucked together with air from a suction port (not shown) of the floor suction tool. The sucked dust is collected in the dust bag 9 through the intake port 6. When the dust bag 9 is filled with dust, the full lamp is turned on to inform the user to replace the dust bag 9. In the replacement work, the dust collection lid 14 is opened, the clamp 12 is released, the dust collection bag 9 is removed from the dust collection chamber 5, and a new dust collection bag 9 is inserted from above the dust collection chamber 5. And put on. When the dust bag 9 is mounted, the portion of the valve 13d that protrudes from the seal portion 13b gradually decreases as the dust collection bag 9 is lowered, so that the user can use the seal portion 13b and the mount 11. The valve 13d located on the lower side can be easily mounted without being sandwiched between them.

  When the replacement work of the dust bag 9 is completed, the dust collection lid 14 is closed and the operation switch is operated, so that cleaning can be performed again.

FIG. 1 is a perspective view of a vacuum cleaner body of an electric vacuum cleaner according to an embodiment of the present invention. FIG. 2 is a front view of the cleaner body as viewed from the front. FIG. 3 is a side sectional view of the cleaner body. FIG. 4 is a side cross-sectional view when a connection pipe is connected to the cleaner body. FIG. 5 is a perspective view of the check valve. FIG. 6 is an enlarged cross-sectional view of a main part in FIG. 7 is an enlarged cross-sectional view of a main part in FIG. FIG. 8 is a view showing the relationship between the hand grip and the fingertip when carrying the vacuum cleaner main body. FIG. 9 is a view showing a state in which the gap attachment is housed in the cleaner body.

Explanation of symbols

4 Electric blower
5 Dust collection chamber
1 Vacuum cleaner body
6 Inlet
9 Dust collection bag
10 Suction port
11 Mount
14 Dust collection lid
13b Seal part
13 Check valve
7 Connection pipe
13d valve
13c Fin section
13e Step

Claims (3)

A vacuum cleaner main body having an electric blower and a dust collecting chamber, an air inlet communicating with the dust collecting chamber, a dust collecting bag detachably attached to the dust collecting chamber from above, and a suction port periphery of the dust collecting bag A mount attached to the cover, a dust collection cover that covers the dust collection chamber, a check valve that has a seal portion that is in close contact with the mount, and prevents leakage of dust, and a connection pipe that is connected to the intake port A vacuum cleaner comprising:
The check valve is divided into a plurality of parts, and the length of the divided lower valve is shorter than the length of the upper valve.   The vacuum cleaner according to claim 1, wherein a fin portion is formed inside the seal portion.   The vacuum cleaner according to claim 2, wherein a stepped portion that is recessed toward the connection pipe is formed in the check valve.