JPS642686Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a vacuum cleaner and relates to a mechanism for attaching a dust collection bag.

(Conventional technology) Conventionally, with vacuum cleaners that use disposable dust collection bags, it is necessary to replenish a new dust collection bag every time the garbage is thrown away, but sometimes people forget to attach the dust collection bag. There is a risk.

In this case, if dust is collected without a dust collection bag, there are problems such as dirt entering the electric part of the vacuum cleaner and causing a malfunction.

Therefore, as described in, for example, Japanese Utility Model Application Publication No. 52-42573 and Japanese Utility Model Application Publication No. 56-45453, when the dust collection bag is not attached, the opening for attaching the dust collection bag is closed. 2. Description of the Related Art Vacuum cleaners are known that have a structure in which a closing lid is prevented from being closed.
In this conventional vacuum cleaner, when the dust collection bag is attached to the dust collection case, the stopper pressed by the mouth frame of the dust collection bag is retracted to a position that avoids the engagement protrusion provided on the lid body. A similar structure was adopted.

(Problem to be solved by the invention) In the conventional vacuum cleaner described above, in order to retract the stopper from the position of the engagement protrusion provided on the lid body when the dust collection bag is attached, the stopper is engaged with the mouth frame of the dust collection bag. The engaging part that moves the stopper when the stopper is moved is made of a separate member from the holding member of the mouth frame of the dust collection bag, and has a large number of parts, the structure is complicated, and it takes time and effort to assemble. Since the mating part is pressed by the face of the mouth frame of the dust collection bag, the mouth frame is easily deformed. If the mouth frame deforms when pressing the engagement part, the stopper will not work properly and the mouth frame will be deformed. The deformation causes malfunction, and the mouth frame needs to be made of a material with a certain thickness to prevent deformation, resulting in an expensive problem.

The present invention was developed in view of the above-mentioned problems, and integrates an engaging part that retracts the stopper from the position of the engaging protrusion of the lid body when the dust bag is attached, and a holding member that holds the mouth frame of the dust bag. to reduce the number of parts,
The structure is simple and easy to assemble, and the edges of the dust collection bag's opening frame are clamped and engaged with guide ribs on both sides, and the guide ribs on the movable side move forward and backward at the side edges of the opening frame, which are difficult to deform. The purpose of the present invention is to provide a vacuum cleaner that eliminates the risk of malfunction due to deformation of the mouth frame, allows the use of a relatively thin material for the mouth frame, and allows the use of an inexpensive dust collection bag. .

[Structure of the idea]

(Means for Solving the Problems) The vacuum cleaner of the present invention has a dust collection case that has a suction port and an opening for attaching a dust collection bag, and has an engagement hole formed in the opening edge around the opening. a lid body that has an engaging protrusion protruding from its inner surface to be inserted into and removed from the engaging hole and covers the opening and the edge of the opening of the dust collecting case in an openable and closable manner; a dust collection bag provided with a mouth frame having a dust collection hole that is inserted and communicated with the suction port, and a communication hole provided in the dust collection case on one side of the opening surface of the communication hole that is open and communicated with the suction port. a fixed side guide rib formed with an insertion groove that engages one edge of the mouth frame of the dust collection bag; and a fixed side guide rib on the other side of the opening surface of the through hole opposite to the fixed side guide rib. It is provided so as to be slidable in the direction toward and away from the dust bag, and when the dust collection bag is inserted, it engages and is pressed against the other edge of the mouth frame of the dust collection bag, and slides forward and backward as the dust collection bag is attached and removed. a movable side guide rib having an engaging portion, the engaging portion forming an insertion groove having a tapered portion that extends inward from the insertion side of the opening frame of the dust collecting bag and is inclined toward the fixed side guide rib side; and a stopper that is provided integrally with the movable guide rib and moves forward and backward as the engaging portion slides forward and backward, and retreats from inside the engaging hole to a position that avoids the engaging protrusion when the dust collection bag is attached. The present invention is characterized in that it further includes a sliding body having a spring that urges the stopper in a direction to advance inward of the engagement hole.

(Function) In the vacuum cleaner of the present invention, when the dust collection bag is not attached to the dust collection case, the stopper of the sliding body is engaged with the engaging projection provided on the lid body that covers the opening of the dust collection case. The lid is held in the contact position and cannot be closed. In addition, when the dust collection bag is installed by engaging both side edges of the mouth frame with both guide ribs, both side edges of the mouth frame are pinched by both guide ribs, and the engaging part of the movable side guide rib is attached to the sliding body. is pressed against the spring that biases it. At this time, both ends of the mouth frame, which are less deformable than the face part, are pinched and press the engaging part, so there is no risk of deformation of the mouth frame, and this guide rib is reliably operated. The sliding body integrated with the stopper moves, and the stopper is retracted from the position of the engagement protrusion of the lid, so that the lid can be closed. When the dust collection bag is removed from the dust collection case, the pressure on the guide rib on the movable side is released, the guide rib is returned together with the sliding body by the spring, and the stopper returns to the position of the engagement protrusion on the lid. It is held in position to prevent occlusion. The engaging part of the guide rib on the movable side faces inward from the insertion side of the mouth frame of the dust collection bag, and forms an insertion groove with a tapered part that slopes toward the guide rib on the fixed side. The inclined insertion guide surface serves as a guide when attaching the opening frame of the dust collection bag, and the opening frame can be attached smoothly.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIG. 1 shows a vacuum cleaner 1, which includes a main body case 3 in which an electric blower 2 is built-in, and a main body case 3 that is detachably attached to one side of the main body case 3. A dust collection case 7 having a suction port 4, an air supply port 5 communicating with the electric blower 2 on the other side, and an opening 6 on the upper side; The dust collection case 7 has a flat opening edge 10 around the opening 6. At the same time, an engagement hole 11 is formed in a portion of the opening edge 10 that is on the suction port 4 side of the dust collection case 7, and the lid body 8 covers the opening edge 10 as well as the opening 6. The dust collection bag 9 has a rectangular opening at the opening. It has a frame 13, and a dust collection port 14 is bored in the center of the mouth frame 13.

A dust collection bag attachment plate 21 is provided inside the dust collection case 7 at the inside of the suction port 4. It has a communication hole 23 that communicates with it through a suction port seal packing 22, and has guide ribs 24 on the fixed side and movable side on the lower side of the inner surface and on the upper left and right sides of the inner surface, respectively, and the tip of each guide rib 24 is connected to a dust collection bag. The opening frame 13 of the dust collection bag 9 is inserted between the mounting plate 21, which protrudes inward from the inner surface of the dust collection bag mounting plate 21, and the opening frame 13 is mounted on the inner surface of the dust collection bag mounting plate 21. An insertion groove 25 is formed for this purpose.

Moreover, the above-mentioned engagement hole 11 in the dust collection case 7
A compartment 31 is formed inside the compartment 3.
1 utilizes the dust bag mounting plate 21 as one side wall of the compartment 31, and is formed on the outer surface side of the dust bag mounting plate 21.

Further, it has an engaging part 32 on one end that engages and is pressed against the side edge of the dust collecting bag 9 when the dust collecting bag 9 is attached, and moves back and forth as the dust collecting bag 9 is attached and detached, and the other end has this engaging part 32. As the engaging portion 32 advances and retreats, it moves forward and backward, and when the dust collecting bag 9 is removed, it advances below the engaging hole 11 and comes into contact with the engaging protrusion 12 on the inner surface of the lid 8, and when the dust collecting bag 9 is attached, it engages with the engaging protrusion 12. The sliding body 35 has a stopper 33 that retracts from below the hole 11 and escapes from the engagement protrusion 12, and a coil spring 34 that urges the stopper 33 to advance downward from the engagement hole 11. The stopper 33 is slidably provided in the dust collection case 7, and the stopper 33 is provided in the compartment 3.
1, and the engaging portion 32 protrudes from a through hole 37 formed in one side wall 36 of the compartment 31 to attach to the dust collection bag mounting plate 2.
The movable side guide rib 24 wraps around the inner side of 1.
The bottom part of the insertion groove 25 formed by the guide rib 24 has a groove extending from the upper side to the lower side, which is the insertion side of the opening frame 13 of the dust collection bag 9, and The coil spring 34 has a tapered portion 38 inclined toward the guide rib 24 on the fixed side, and the coil spring 34 is inserted between the stopper 33 and the inner surface of one side wall 36 of the compartment 31 in which the through hole 37 is formed. It is stretched.

Further, a clamp 43 is provided at the upper part of one side of the dust collection case 7 above the suction port 4, and is supported by a shaft 41 so as to be movable up and down, and is rotationally biased upward by a coil spring 42. Due to the rotation of the cage, the lid body 8
The lid body 8 is held in the closed state or released by engaging and disengaging the lid body 8.

Further, an annular opening sealing gasket 51 is attached to the opening edge of the opening 6 of the dust collecting case 7, and a sealing rib 52 corresponding to the opening sealing gasket 51 is provided protruding from the inner surface of the lid 8.
improves airtightness when closed.

Next, the operation of this embodiment will be explained.

When the dust collection bag 9 is not attached, the stopper 33 of the sliding body 35 is urged by the coil spring 34 and advances below the engagement hole 11 to close the engagement hole 11 from the inside. Therefore, even if an attempt is made to close the lid 8, the engagement protrusion 12 on the inner surface of the lid 8 comes into contact with the stopper 33 in the engagement hole 11, so that the lid 8 cannot be closed. At this time, as the stopper 33 advances, the engaging portion 32 of the sliding body 35 also advances inwardly from the inner surface of the dust collection bag mounting plate 21, being urged by the coil spring 34.

Then, when the opening frame 13 of the dust collection bag 9 is inserted into the insertion groove 25 formed by the guide rib 24 and the opening frame 13 is attached to the inner surface of the dust collection bag mounting plate 21,
Both side edges of the mouth frame 13 are sandwiched between both guide ribs 24 and guided in engagement, and side edges of the movable side guide rib 24 of this mouth frame 13 are connected to the movable side guide rib 2.
Since the sliding body 35 that is integrated with the sliding body 4 contacts the tapered portion 38 of the engaging portion 32, as the mouth frame 13 is pushed in, the tapered portion 38 is pushed and the engaging portion 32 retracts. Then, as the engaging portion 32 retracts, the stopper 33 retracts from below the engaging hole 11 while resisting the biasing force of the coil spring 34, and the engaging protrusion 1 of the lid body 8
Run away from 2. Therefore, the engagement protrusion 12 on the inner surface of the lid body 8
can be inserted into the engagement hole 11, and thereby the lid body 8 can be closed.

The mouth frame 13 of the dust collection bag 9 has both side edge parts, which are less easily deformed than the face part, sandwiched between the guide ribs 24, so even if the biasing force of the spring applied to the movable guide rib 24 is applied, The surface portion of the mouth frame 13 is not deformed, and a malfunction such as the lid body 8 being closed even though the dust collection bag 9 is not attached does not occur.

As shown in FIGS. 6 and 7, when the mouth frame 13 of the dust collection bag 9 is attached to the dust collection bag attachment plate 21, the engaging portion 32 retracts and escapes from the engaging protrusion 12 to form the partition wall 31. At one end of the stopper 33 on the through hole 37 side of the sliding body 35 that slides and retreats toward the through hole 37 side, there is an annular closing body 6 that covers the gap of the through hole 37 from the periphery.
1 may be provided integrally. If you do this,
It is possible to prevent leakage air from entering through the gap between the through holes 37 and increase the suction force.

Further, when the dust collection bag 9 is attached, the stopper 33 needs to escape from the engagement protrusion 12 of the lid 8 to enable the lid 8 to be closed. As shown, when the dust collection bag 9 is attached, a recess 71 located below the engagement hole 11 is formed in the stopper 33, and the engagement protrusion 12 is received in the recess 71 so as to escape, and the lid body 8 is inserted into the stopper 33. It may also be possible to enable the closure of Further, at this time, if an annular closing body 72 is provided around the recess 71 to cover the periphery of the engagement hole 11, leakage air will not enter from the engagement hole 11, and the suction force can be increased. .

[Effects of the invention] According to the invention, when the dust collection bag is not attached to the dust collection case, the stopper of the sliding body comes into contact with the engaging projection provided on the lid body that covers the opening of the dust collection case. It is held in a position where it touches the lid, and the lid cannot be closed.
In addition, when the dust collection bag is installed by engaging both side edges of the mouth frame with both guide ribs, both side edges of the mouth frame are pinched by both guide ribs, and the engaging part of the movable side guide rib is attached to the sliding body. The actuation of this guide rib causes the sliding body integrated with this guide rib to move, and the stopper is retracted from the position of the engagement protrusion of the lid body, allowing the lid body to be closed. There is no risk of using the vacuum cleaner without the dust collection bag attached, and the opening frame of the dust collection bag is pinched by both side edges, which are less deformable than the face part, and presses the engaging part.
There is no risk of deformation of the mouth frame, there is no risk of malfunction due to deformation of the mouth frame, a relatively thin material can be used for the mouth frame, the dust collection bag can be obtained at low cost, and the guide rib on the movable side can be easily engaged. The joining part forms an insertion groove that extends inward from the insertion side of the opening frame of the dust collection bag and has a tapered part inclined toward the guide rib on the fixed side, so that the insertion guide surface inclined toward the guide rib on the fixed side is formed. It serves as a guide when attaching the opening frame of the dust collection bag, allowing the opening frame to be attached smoothly.Furthermore, the sliding body with the guide rib and stopper that engages and holds the opening frame of the dust collection bag is integrally formed. Therefore, the number of parts is small, the structure is simple, and the ease of assembly is improved.

[Brief explanation of the drawing]

Figure 1 is a partially vertical front view showing an embodiment of the vacuum cleaner of the present invention, Figure 2 is a perspective view of the dust collection case with the lid open, and Figure 3 is a partial vertical cross section of the dust collection case. 4 is a perspective view of the sliding body, FIG. 5 is a vertical sectional view showing the relationship between the stopper and the engaging protrusion, and FIGS. 6 to 9 are vertical sectional views showing modifications of the sliding body. . 6... Opening, 7... Dust collection case, 8... Lid, 9... Dust collection bag, 10... Opening edge, 11...
Engagement hole, 12... Engagement protrusion, 13... Mouth frame, 24
... Guide rib, 25 ... Taper part, 31 ...
Partition wall, 32... Engaging portion, 33... Stopper, 34
... Spring, 35 ... Sliding body, 61 ... Closure body, 7
1... recess.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A dust collection case having a suction port and an opening for attaching a dust collection bag, and an engagement hole formed in the opening edge around the opening, and the inside of the engagement hole. a lid body that has an engaging protrusion protruding from its inner surface that is inserted into and removed from the dust collection case, and covers the opening and opening edge of the dust collection case in an openable and closable manner; A dust collection bag provided with a mouth frame having a communicating dust collection hole, and an opening of the dust collection bag provided on one side of an opening surface of a communication hole opened in the dust collection case and communicating with the suction port. A fixed side guide rib formed with an insertion groove that engages one side edge of the frame, and a fixed side guide rib that faces the fixed side guide rib and slides in a direction toward and away from the fixed side guide rib on the other side of the opening surface of the communication hole. an engaging portion which is movably provided and which engages and is pressed against the other edge of the mouth frame of the dust bag when the dust bag is inserted, and which slides forward and backward as the dust bag is attached and removed; The engaging portion includes a movable guide rib that forms an insertion groove that extends inward from the insertion side of the mouth frame of the dust collection bag and has an insertion groove that is inclined toward the fixed guide rib side; The stopper is integrally provided and moves forward and backward as the engaging portion slides forward and backward, and retreats from the inside of the engaging hole to a position that avoids the engaging protrusion when the dust collection bag is attached. 1. A vacuum cleaner comprising: a sliding body having a spring that urges the vacuum cleaner to advance inward of a matching hole. (2) A compartment is provided inside the engagement hole of the dust collection case, a stopper of the sliding body is slidably provided in the compartment, and a through hole is provided in one side wall of the compartment to allow the stopper to slide through the compartment. Utility model registration claim 1, characterized in that the sliding body is integrally provided with a closing body that causes the engaging portion to protrude from the hole and closes the gap in the through hole when the dust collection bag is attached. The vacuum cleaner mentioned. (3) Utility model registration claim 1, wherein the stopper of the sliding body has a recess that is located inside the engagement hole and receives the engagement protrusion when the dust collection bag is attached. The vacuum cleaner mentioned.