JP3207059B2 - Electric vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner in which a dust bag is securely mounted.

[0002]

2. Description of the Related Art As one of the dust collectors used in conventional vacuum cleaners, there is a paper dust bag that can be disposable from the viewpoint of easy dusting and sanitation. As a vacuum cleaner of the type using a disposable dust collecting bag, for example, as described in Japanese Utility Model Publication No. 64-2680, it is formed in a bottomed cylindrical shape having an opening on one side. There is a bottom wall, that is, a frame body that can be inserted and removed in a dust collection case provided with a suction port on the front side, and a holding portion provided at a front end portion of the frame body holds a mouth plate of a dust collection bag. . The holding portion is composed of a projection and a locking piece having a gap formed so that the mouth plate can be inserted. The dust is collected by inserting the mouth plate from above into the gap and holding the mouth plate. The bag is mounted on the holding section.

However, in the above case, the mouth plate is simply inserted from above into the gap of the holding portion and clamped between the projection and the locking piece. Even if the mouth plate is not completely inserted, it is held as if. The frame body can be attached to the dust collection case even when the mouth plate is not normally inserted into the gap. For this reason, in some cases, although the mouth plate is held in an incomplete state in the gap between the holding portions, it is erroneously recognized as being in the perfect holding state, and the incomplete holding state is maintained. A situation has arisen in which the frame is mounted in the dust collection chamber.

[0004]

As described above, in the above-described conventional vacuum cleaner, the holding frame can be mounted in the dust collecting chamber even when the mounting of the mouth plate to the holding portion is incomplete. In some cases, the holding frame may be erroneously attached to the dust-collecting case while the mouth plate is in an incompletely held state. Then, the axial center of the hole for inserting the connection pipe of the suction hose formed in the mouth plate may be as described above. When the connection pipe is inserted into the suction port in this state, the end of the connection pipe is not fitted into the hole of the mouth plate, and the mouth plate is strongly pressed, and the deformation is caused. In some cases, the mouth plate is damaged and the dust bag cannot be used.In addition, even if the damage does not occur, the connection pipe fits in the deformed state of the mouth plate. From the outer periphery of the connection pipe and around the hole. Dust suction force of the dust from the floor brush for will flow into there is lowered.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and comprises a main body accommodating an electric blower, a dust collection chamber formed in a bottomed cylindrical shape and having an open side .
Inlet communicating with the dust collecting chamber, so as to extend to the opening side
Formed on the inner peripheral wall of the dust collecting chamber, and inclined so as to protrude inward from the opening side toward the bottom side .
A dust collecting case attached to the main body having a rib having an inclined portion, and a mouth frame attaching portion having an insertion portion opposed to the suction port and having the inclined portion side as an insertion port, and an outer periphery thereof Face in front
Face the opening edge of the rib to the body side
Holder provided with a filter support placed Te, attached to the opening frame attachment portion through the opening frame has a mouth frame to be inserted into the insertion portion from the insertion opening, and the opening frame mounting section
Dust bag is disposed between the filter support Tona
And a dust collecting device inserted from an opening of the dust collecting case and mounted in the dust collecting chamber .
Further, in the present invention, an end of the rib on the opening side is provided.
On the opposite side of the edge to the ramp,
Contact with the edge of the mouth frame guided by
It is preferable to provide a wall in the dust collecting case.

[0006]

Since the present invention is constructed as described above, even if the dust collecting bag mouth frame is incompletely attached to the insertion portion provided in the mouth frame attaching portion of the holding member, the dust collecting device can be used. Depending on the mounting operation in the dust collection case, the ribs of this case have
Since the mouth frame is securely attached to the insertion portion by the inclined portion , the mouth frame is always attached to the insertion portion in a normal state when the dust collector is normally mounted in the dust collection case. Then, collect the wall in contact with the edge of the mouth frame continuously to the slope.
In the invention provided in the dust case, the inclined portion serves as a guide.
The mouth frame attached in a normal state as described above
Stops at the wall, so the mouth frame detaches from the mouth frame mounting part
The mouth frame can be stopped even when impact force is applied in the direction
You.

[0007]

1 to 5 show an embodiment of the present invention.
It will be described based on. As shown in FIG.
A main body 2 accommodating an electric blower (not shown), a dust collecting chamber case 4 having a dust collecting chamber 3 provided therein, and the dust collecting case 4
And a dust collecting device 5 detachably attached to the dust collecting chamber 3. A moving wheel 6 is attached to a side wall of the main body 2, and a handle 7 is integrally provided at an upper portion. A fixed clamp 8 having a concave locking groove 8a is provided near the tip of the handle 7 on the dust collection case side (hereinafter referred to as the front side) of the main body 2. A fixed locking portion 22 having a locking hole 22a is provided on the front side of the main body case 2 located below the fixed clamp 8 as shown by a two-dot chain line in FIG. Although not shown, an exhaust hole (not shown) for discharging exhaust air from the electric blower to the outside is provided on the rear wall of the main body 2, and a pair of support legs 9 (only one is shown in FIG. 1) is provided above the rear wall. The supporting legs 9 and the wheels 6 allow the vacuum cleaner 1 to be placed on the floor with the rear wall side down. Reference numeral 10 denotes a power cord for supplying electric power to the electric blower. S1 is a switch for turning on the power, and S2 is a switch for turning off the power.

Next, as shown in FIG. 2, the dust collecting case 4 is formed in a bottomed cylindrical shape having an opening 11 on one side, and a dust collecting chamber 3 is provided inside. A suction port 12 is formed at the bottom, that is, on the left side (hereinafter referred to as a front side) in FIG. 2, and a packing 13 is attached to an edge of the suction port 12 on the dust collection chamber 3 side. An annular rib 13a provided on the inner periphery of the pipe 13 presses against a peripheral wall of a connecting pipe 14 indicated by a two-dot chain line connected to one end of a suction hose (not shown) inserted into the suction port 12, and
And the inner wall of the suction port 12 are kept airtight.
Further, the tip portion 13b of the packing 13 on the dust collection chamber 3 side is pressed against an opening frame 50b of a dust collection bag 50 to be described later so as to keep them both airtight. Further, a plurality of convex ribs 15 (only one rib is shown in FIG. 2) are formed on the upper side wall 3a of the inner peripheral wall of the dust collecting chamber 3, and the ribs 15 are provided from a substantially middle portion to a front side in the drawing. An inclined portion 15a is provided as guide means which is formed so as to be inclined downward so as to protrude inward from the opening side toward the bottom side. This inclined portion 15a presses the upper end of the mouth frame 50b downward when the mouth frame 50a of the dust collecting bag 50 is incompletely attached to the attachment groove 45 described later, and the mouth frame 50b is attached to the attachment groove 45. It functions so as to be inserted into the.

Similarly, a plurality of convex ribs 16 (only one rib is shown in FIG. 2) are formed on the lower wall 3b of the inner peripheral wall of the dust collecting chamber 3. The edges of the ribs 15 and 16 on the side of the opening 11 are formed so as to be located inside by a predetermined distance from the edge of the opening 11.
The edge of 6 functions so as to position the dust collecting device 5 when the dust collecting device 5 is attached to the opening 11, that is, when the dust collecting device 5 is attached. A handle 18 having a recess 17 into which a finger is inserted by recessing the outer wall inward is formed at the front upper portion of the dust collecting case 4. And this recess 1
7 has an inclined surface 1 of the rib 15 on the inner surface of the lower wall 17a.
5a, and the inner surface of the lower wall 17a is
It functions so as to prevent the 0 mouth frame 50b from falling off.

On the upper part of the dust collecting case 3, there is provided a movable clamp 20 which is rotatably supported by a shaft 19 projecting from both sides into a bearing hole provided in the dust collecting case 4 (not shown). A locking projection 21 is provided on the outer wall near the opening 11 on the lower side of the dust collecting case 4 to protrude downward.
Is provided. The fixed protrusion 2 is provided on the front lower part of the main body 2 shown by a two-dot chain line.
After that, the dust collecting case 4 is rotated clockwise with the locking projection 21 fitted in the locking hole 22a as a rotation fulcrum, and the movable clamp 20 is moved to the distal end. By locking the locking piece 20a formed in the portion in the concave locking groove 8a of the fixed clamp 8 indicated by the two-dot chain line, the dust collecting case 4 is connected to and attached to the main body 2. I have.

Further, the outer wall of the dust collecting case 4 is recessed inward at a position obliquely below the suction port 12 on the front side of the dust collecting case 4, that is, as shown in FIG.
An engagement recess 23 surrounded by a peripheral wall 23a protruding inward is provided, and a bottom wall 23b of the engagement recess 23 functions as a stopper. The engaging recess 23 is opened outside the dust collecting case 4, that is, on the front side. The opening is formed on the floor when the vacuum cleaner 1 is set up by the supporting legs 9 and the moving wheels 6 formed on the rear wall. When placed on a surface, it faces upward. Further, a turning ring (not shown) is provided on a shaft 24 provided outside the bottom wall of the dust collecting case 4. The opening of the engaging recess 23 is not shown when the vacuum cleaner is stored in an upright state, but the engaging piece provided on the extension tube of the suction means including a suction hose, an extension tube, a floor brush, etc. Is engaged with the vacuum cleaner 1.

Next, the dust collector 5 will be described.

The dust collecting apparatus 5 includes a filter support 30 and a holding frame 40 which constitute a holding body, and a holding frame 4 of the holding body.
Hole 50 into which the connection pipe 14 is attached.
a) and a dust collecting bag 50 made of a dust collecting bag 50c attached to a mouth frame 50b made of cardboard or the like. The hole 50a is provided with a packing 50d made of soft rubber for hermetically holding the periphery of the connection pipe 14 inserted into the hole 50a. The filter support 30 is composed of a frame 31, a packing 32 and a filter 33 as shown in FIG. The frame body 31 is formed in a square shape and has a rectangular cylindrical peripheral wall 34 on an outer peripheral portion, and a flange protruding in a direction orthogonal to the peripheral wall 34 at one end side of the peripheral wall 34, that is, an edge located on the main body 2 side. A portion 35 is formed, and a plurality of protrusions 35a are formed on a surface of the flange portion 35 on the dust collection chamber 3 side. A projection 34a is formed on the other edge of the peripheral wall 34. A vertical rib 34b and a horizontal rib 34c are formed on the peripheral wall 34 of the frame 31 so as to intersect with each other.
A pressing member 34d is provided so as to be separated from and opposed to 4b and 34c. The ribs 34b, 34c and the pressing member 34d
The filter 33 made of a sponge-like member having air permeability and the like is disposed between the filter 33 and the filter 33.

The packing 32 is formed in a U-shape in cross section. The packing 32 is provided on a base 32b provided with a mounting groove 32a opened inward and on the outer periphery of the base 32b. A lip portion 32c is provided on the main body 2 side of the base portion 32b so as to be in pressure contact with the inner peripheral surface to maintain airtightness, and a lip portion 32d provided in press contact with the front wall surface 2a of the main body 2 to maintain airtightness. The packing 32 is attached to the outer periphery of the frame 31 by surrounding and fitting the flange 35 with the attachment groove 32a.

Next, the holding frame 40 will be described. The holding frame 40 has a case body 42 provided with a dust bag storage section 41 provided with an opening above the dust bag 50.
The frame body 31 is provided at one end of the case body 42.
A fitting wall 43 is formed so as to be fitted to the peripheral wall 34.
Is provided with an engagement hole 43a that engages with the first hole. Further, the other end side of the case body 42, that is, the suction port 12 of the dust collection case 4.
Is provided with a mouth frame mounting portion 44 on the side opposite to. The mouth frame mounting portion 44 forms a U-shaped notch 44b having an open upper portion in the front wall 44a on the other end side, and a notch edge of the notch 44b has a rear edge wall 44c and a space separated from the rear edge wall 44c. A mounting groove 45 is formed as an insertion portion composed of a front edge wall 44d formed opposite to the front edge wall 44d. The mounting groove 45 has an upper opening, that is, the rib 15 side is opened, and is used as an insertion port. As shown in FIG.
Is inserted from above the opening of the mounting groove 45 to be mounted in the mounting groove 45.

Further, a stopper 46 for preventing the user from forgetting to attach the dust bag 50 is provided at the lower right corner of the front wall 44a in FIG. This stopper 46
Is constituted by a substantially L-shaped operating rod 46a and a stopper projection 46b provided at the distal end of the operating rod 46a so as to protrude forward, and as shown in FIG. 5, the base end of the operating rod 46a. A shaft hole 47 is formed in the shaft hole 47.
Is fitted to a shaft 47a provided on the front wall 44a, so that the operating rod 46a is rotatably provided on the front wall 44a. The L-shaped corner portion 46c can appear and disappear. The operating rod 46a is connected to the corner 46
c is urged by a spring 48 so as to protrude into the insertion groove 45, and interferes with the mouth frame 50 b of the dust bag 50 inserted in the insertion groove 45, and as the mouth frame 50 b is inserted, the mouth frame 50. Are retreated from the inside of the insertion groove 45 against the urging force of the spring 48.

When the corner portion 46c projects into the insertion groove 45, the stopper projection 46b is opposed to the bottom wall 23b of the fitting recess 23 provided to project into the dust collecting case 3. Has become. Further, as described above, when the mouth frame 50b of the dust bag 50 is inserted into the mounting groove 45, the L-shaped corner portion 46c of the operating rod 46 is pressed against the corner portion of the mouth frame 50b as shown in FIG. Rotating in the direction indicated by the arrow in 3), the stopper projection 46b moves to the position indicated by the two-dot chain line. In this state, when the stopper projection 46b is mounted on the dust collection case, the stopper projection 46b is located at a position retracted from a position facing the bottom wall 23b of the fitting recess 23 provided to protrude into the dust collection case 3. The dust collector 5 is mounted at a normal position.

Next, how to assemble the dust collecting apparatus 5 will be described. First, the holding frame 40 and the filter support 3
0 and an engagement hole 43 formed in the fitting wall 43 of the holding frame 40.
By engaging the projection 34a provided on the frame 31 of the filter support 30 with the a, the two are integrally connected. Then, after integrally holding the holding frame 40 and the filter support 30, the mouth frame 50 b of the dust bag 50 is inserted into the mounting groove 45 of the mouth frame mounting portion 43 of the holding frame 40, and the dust collecting bag 50 is inserted. Is attached to the holding frame 40, the dust collector 5 is assembled. In a state where the dust bag 50 is attached to the opening attachment portion 43 of the holding frame 40 in a predetermined state, the stopper 46 rotates in the direction of the arrow in FIG. 3C, and the stopper projection 46b is indicated by a two-dot chain line. It is positioned in position.

Next, a method of mounting the dust collecting device 5 on the dust collecting case 4 will be described.

After the filter support 30 and the holding frame 40 have been integrally joined as described above, the dust collecting bag 50 is inserted into the insertion groove 45 with its mouth frame 50b inserted into the insertion groove 45 from the insertion opening, that is, from the insertion opening. The dust collecting device 5 is assembled by attaching the dust collecting device to the dust collecting device 5. In this case, the mouth frame 50b is attached to the mounting groove 45.
When the stopper body 4 is properly attached to the
6 is located at the position indicated by the two-dot chain line in FIG. And this dust collector 5
The dust collection device 4 is mounted on the dust collection case 4 by attaching the dust collection device 5 to the dust collection case 4.
This is done by inserting from the opening 11 of the second member. In the mounted state, the lip 32c of the packing 32 of the filter support 30 is pressed against the inner peripheral wall of the opening 11, and the packing 32 is positioned on the edges of the ribs 15 and 16 of the dust collecting case 4, so that the dust collecting device is Reference numeral 5 is mounted in the dust collecting case 4. At this time, since the stopper projection 46b is located at a position retracted from a position facing the bottom wall 23b of the fitting recess 23 provided so as to protrude into the dust collecting case 3, the stopper projection 46b is The dust collecting device 5 can be normally mounted without being prevented from being inserted into the dust collecting case 4 by the bottom wall 23b of the combination concave portion 23.

Here, when the mouth frame 50a of the dust bag 50 is not properly mounted in the insertion groove 45 of the mouth frame mounting portion 44 of the holding frame 40, the insertion operation when the dust collecting device 5 is mounted. The process in which the mouth frame 50b is normally mounted in the mounting groove 45 will be described. Now, when the dust collecting device 5 is mounted on the dust collecting case 4, the opening frame 50b of the dust collecting bag 50 is inserted into the insertion groove 45.
If it is mounted in a normal state, that is, it is not completely inserted, the mouth frame 50b is in a state of protruding above the mounting groove 45. Therefore, as the dust collecting device 5 is inserted into the dust collecting case 4, the upper end of the mouth frame 50b comes into contact with the inclined portion 15a of the rib 15. Then, the inclined portion 15a applies a pressing force so as to gradually push down the mouth frame 50b. When the mouth frame 50b is gradually pushed into the mounting groove 45 and the dust collecting device 5 is mounted in a normal position. The mouth frame 50b is completely mounted in the mounting groove 45, that is, in a normal state.

Accordingly, even if the mouth frame 50b of the dust bag 50 is incompletely mounted in the mounting groove 45 of the mouth frame mounting portion 44 of the holding frame 40, the mounting of the dust collecting device 5 can be prevented. In response to the inserting operation, the mouth frame 50b is gradually pushed into the mounting groove 45 by the inclined portion 15a of the rib 15, and when the dust collecting device 5 is mounted in a normal state, the mouth frame 50b is also simultaneously normal. In other words, the suction port 1
The mounting is performed in a state of being coincident with the second axis, and there is no occurrence of a situation such as being damaged by being pressed by the connecting pipe 14 inserted into the suction port unlike the related art. In addition, when the dust collecting device 5 is mounted in a normal state, the upper end of the mouth frame 50b is prevented from falling off by the inner side surface of the wall 17a of the concave portion 17 of the dust collecting case 4, and the connection pipe 14 is removed. Therefore, even if an impact force is applied to the vacuum cleaner 1 in the direction in which the mouth frame 50b is separated from the mounting groove 45 together with the dust collecting bag 50, the mouth frame 50b may be attached to the mounting groove 45.
It doesn't move up inside.

When the dust collecting bag 50 is not installed in the mouth frame mounting portion 44 of the holding frame 40, the mouth frame 50b is not inserted into the insertion groove 45, so that the stopper projection 46c of the stopper 46 is shown in FIG. Since the dust collecting device 5 is inserted into the dust collecting case 4 in this state, the stopper protrusion 46b hits the bottom wall 23b of the fitting concave portion 23 and further increases. The inward movement is prevented and the dust collecting device 5 is not mounted in the dust collecting case 4 in a normal state. Therefore, even if the user mistakenly forgets to attach the dust collecting bag 50, the dust collecting device 5 is not attached to the dust collecting case 4 in that state.

In the above embodiment, the filter support 30 and the holding frame 40 are provided separately from each other, but they may be integrated.

In the above-described embodiment, the mounting portion of the dust collecting device 5 to be attached to the dust collecting case 4 is formed by the packing 32. However, the packing is not necessarily required. What is necessary is just to have.

In the above embodiment, the holder of the dust collecting device 5 is attached to the opening 11 of the dust collecting case 4.
This need not necessarily be attached to the opening 11, but may be attached to the inside of the dust collecting case 4.

Further, in the above embodiment, the case where the present invention is applied to a horizontal vacuum cleaner has been described, but it goes without saying that this can be applied to a vertical vacuum cleaner.

[0028]

The present invention is configured as described above.
Even if the dust collecting bag mouth frame is incompletely attached to the insertion portion provided in the mouth frame attaching portion of the holder, this case will be used in accordance with the mounting operation of the dust collecting device in the dust collecting case. Ribs
Since the mouth frame is securely attached to the insertion portion by the inclined portion , the mouth frame is always attached to the insertion portion in a normal state when the dust collector is normally mounted in the dust collection case, and therefore, In addition, it is possible to prevent the mouth frame from being damaged and to prevent a reduction in dust absorbing force. Then, the wall that contacts the edge of the mouth frame is connected to the slope.
In the invention provided in the dust collection case, the inclined portion is used as a guide.
And put the mouth frame in the normal state as described above.
You can stop it with the wall.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing the entire vacuum cleaner of the present invention.

FIG. 2 is a cross-sectional view showing a state where a dust collecting device is mounted on a dust collecting case of the vacuum cleaner.

FIG. 3 is a perspective view of a holder of the dust collecting device of the vacuum cleaner.

FIG. 4 is an exploded perspective view showing how a dust bag is attached to a holder of the vacuum cleaner.

FIG. 5 is a diagram showing an attached state of a stopper body of the vacuum cleaner.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner 2 Main body 3 Dust collection chamber 4 Dust collection case 5 Dust collection device 11 Opening 12 Suction port 15 Rib 15a Inclined part 17a Wall 30 Filter support (holding body) 31 Frame 32 Packing (mounting part) 40 Holding frame (Holder) 44 Port frame mounting part 45 Insertion groove (insertion part) 50 Dust collection bag 51b Port frame

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A47L 9/10 A47L 9/14

Claims (2)

(57) [Claims] 1. A main body accommodating the electric blower, a bottomed cylindrical shape formed dust collecting chamber having an open first side, a suction port communicating with the dust collecting chamber, the dust so as to extend to the opening side
An inclined portion formed on the inner peripheral wall of the chamber and inclined so as to project inward from the opening side toward the bottom side.
A dust collecting case attached to the main body, having a rib having a mouth frame mounting portion having an insertion portion facing the suction port and having the inclined portion side as an insertion port, and an outer peripheral surface facing the opening of the rib.
Filler that is arranged close to the main body side facing the edge of
Holding body provided ter support, the opening frame attachment portion through the opening frame has a mouth frame to be inserted into the insertion portion from the insertion port
Attached, this mouth frame attachment part and the filter support
Consists dust bag disposed between the body, vacuum cleaner, characterized in that a said dust collecting chamber mounted dust collecting apparatus is inserted from an opening of the dust collection casing. 2. The side of the rib opposite to the edge on the opening side.
In the continuation of the inclined portion, the
The wall that touches the edge of the mouth frame and stops this
The vacuum cleaner according to claim 1, wherein the vacuum cleaner is provided in a dust case .