JPH11206652A - Dust collection bag for vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dust collection bag for vacuum cleaner at a low cost wherein the adaptability to a dust collection bag of a vacuum cleaner of various manufacturers can be improved and even if the external appearance of the bag is small, it can be easily expanded in the dust collection room and a space in the dust collection room can be utilized effectively and original performances of the dust collection bag such as filter functions, dust collection capacity can be sufficiently provided. SOLUTION: The dust collection bag 1 for vacuum cleaner is formed into a horizontally-long cylindrical shape from an air-permeable filter medium, and bellows 2, 3 are formed on the opposite sides of bag 1 in the width direction thereof, while the open edge of each of the opposite sides of the bag in the longitudinal direction is folded back to form an end seal part 4. A bag body 6 having a suction port at the midpoint in the longitudinal direction and a supporting plate 7 wherein a suction port is formed in a plate material having rigidity are pasted to each other, with both the suction ports 5 being aligned with each other. And the width size H is 90-125 mm and the width size of the bellows M is 125-145 mm, and the ratio L/M between the size M and the longitudinal size L is 1.7-2.7. At each of the parts 4, 4 at the opposite ends in the longitudinal direction, the inner side of each of the folded open ends of the cylindrical filter medium is pasted to the surface thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable dust-collecting bag for a vacuum cleaner in which a filter medium such as air-permeable paper is formed into a bag shape. Also, the present invention relates to a disposable dust bag for a vacuum cleaner that can be used as a common type by skillfully utilizing a space generated in a dust collection chamber even in a high-power vacuum cleaner.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Publication No. 60-53608
As disclosed in Japanese Patent Application Publication No. 60-54049 and the like, a bag body formed of a filter medium having air permeability and provided with a suction port for sucking dust, and a suction port formed on a rigid plate material. 2. Description of the Related Art A dust collecting bag for a vacuum cleaner is known in which a provided support plate is adhered in a state where respective suction ports are matched.

[0003] The dust collecting bag is formed of a filter medium in a horizontally long cylindrical shape, with bellows on both sides in the width direction, end sealing portions on both ends in the longitudinal direction, and suction in the middle in the longitudinal direction. Mouth,
Each of the formed bag bodies (hereinafter, referred to as a "bag body") and a support plate provided with a suction port on a rigid plate material such as cardboard are adhered to each other so that the respective suction ports match. I have. The bag body has a flat bag shape in which the bellows portions on both sides in the width direction are valley-folded and folded flat, and the end sealing portions on both sides in the longitudinal direction have a good sealing state of the open edge of the cylindrical filter medium. In order to achieve this, the filter medium is folded in two steps so that the tip is located at the innermost position, and the flat surface between the tip and the first fold is adhesively fixed to the bag body surface. .

[0004] Further, the dust bag is folded so that both sides of the horizontally long bag body are rearward and rearward of the support plate so that the bag can be easily mounted in a dust collecting chamber of a vacuum cleaner having a substantial capacity smaller than that of the bag. It is said that it is desirable to fold the saliva body so that the fold does not protrude from the support plate to make it more compact. The greatest advantage of folding the bag body in this way lies in the deployment of the dust bag. As the dust collecting operation in the dust collecting chamber of the vacuum cleaner progresses, the bellows and the folds on both sides of the bag body are peeled off. It is considered that the filter medium is unfolded and the filter medium surface without clogging is exposed as described above, thereby aiming at the continuation of the dust collection possible time. Therefore, this type of dust bag is used heavily in the industry, and most of the currently available dust bags, whether genuine or shared, support the horizontally long tubular bag body as described above. It has a structure that is folded to the back and rear of the board.

[0005] On the other hand, the features of the common type dust bag currently marketed are mainly the shape and structure of the support plate and the mounting position of the support plate and the bag body. A representative example thereof is disclosed in, for example, Japanese Utility Model Registration No. 2503096, and the features shown in FIGS. 1 and 2 of the publication clearly show the features. That is, FIG.
The four-sided mouth ball board (support plate) shown in the above, around each of the four sides, the first and second cutout,
A round hole, a U-shaped notch, and a rectangular notch are arranged. The first and second cutouts are cut out to match the dimensions of the mounting portion of the dust collection chamber of a vacuum cleaner of a different model, and the rectangular cutout is a suction device that differs by model. The difference in the height of the mouth, and the round hole and the U-shaped cutout are for adjusting the difference in the way of fixing the support plate which differs depending on the model. Further, as shown in FIG. 1 of the publication, the support plate is attached to the bag main body in a state where one side having the round hole cutout portion protrudes from one side in the width direction of the bag main body. In this way, one side of the support plate is protruded from one side in the width direction of the bag body because the method of fixing the support plate to the dust collection chamber is such that the horizontally long bag body is oriented in the left-right (horizontal) direction. In the case of a model of a fixed type, care is taken so that the lower side in the width direction of the bag body does not stick to the bottom wall of the dust collection chamber.

By the way, the direction of deployment of the genuine dust bag in the dust collecting chamber of the vacuum cleaner of each maker is such that the longitudinal direction of the horizontally long bag body is the left-right (horizontal) direction according to the structure of the dust collecting chamber. There are two modes, a mode in which the bellows on both sides in the width direction are developed in the vertical direction, and a mode in which the bellows on both sides in the width direction are developed in the horizontal direction by setting the longitudinal direction of the bag body to the vertical (vertical) direction. Therefore, in the case of a common type dust bag, it is desirable to be able to attach it to any of the vertical, horizontal, and two types of models. However, it is difficult to use the directionality of the support plate. Therefore, it may not always be possible to match the mounting direction of the genuine dust bag. This type of inconsistency in the currently available common-type dust collection bags causes substantial space between the attached dust-collection bag and the dust-collection chamber wall, and the essential problem that the bag easily gets caught on the wall of the dust-collection chamber. The point is inherent.

Furthermore, in recent years, the suction capacity of a vacuum cleaner has been greatly increased year by year. For example, JIS C9108
Looking at the suction power of the vacuum cleaner (hereinafter simply referred to as "suction power") measured according to Appendix 1 "Method of measuring suction power", it was about 160 to 300 W around 1989. However, since 1995, 400-560W
High power ones have become mainstream, and have a suction power about twice that of the conventional one. However, on the other hand, the size and weight of the vacuum cleaner main body are being promoted in order to improve the mobility of the vacuum cleaner, and there is a remarkable reduction in the size of the dust collecting chamber.

[0008] The dwarfing of the dust collection chamber can be seen in any of three directions of the vertical (up and down) direction, the horizontal (left and right) direction and the depth direction of the dust collection chamber.
The size in the direction in which the valley fold of the bellows of the bag body of the dust collection bag extends is remarkably reduced. It is considered that the miniaturization of the dust collecting chamber was considered so that the structural strength of the dust collecting bag could easily withstand the high-powered suction force (that is, the developing stress acting on the dust collecting bag).

In other words, the material of the bag body of the current dust bag is
After all, a filter paper that is small in both strength and elongation does not have the property of expanding and expanding like a rubber balloon at all, and can only be deployed within the design volume at best. In a large-capacity dust collection chamber like a conventional vacuum cleaner, if the bag body was expanded to the full capacity with high-powered suction while leaving the bag body free and without any support, Since the characteristic value of the filter paper material is approaching the limit value of the resistance, the probability of occurrence of bag breakage is extremely increased. Therefore, the actual volume in the dust collection chamber is designed to be slightly smaller than the deployed volume of the dust collection bag, and a large number of ribs are erected on the wall surface of the dust collection chamber. By supporting the surface of the dust collecting bag, the bag body of the dust collecting bag does not adhere to the inner wall of the dust collecting chamber, and the space formed between the ribs keeps the flow of the air sucked into the dust collecting chamber while expanding the bag main body. It is considered that the structural strength of the bag body was intended to be maintained by the suppression.

The reason why the length of the dust collecting chamber is greatly reduced in the depth direction is considered as follows. That is, when the bag body of the dust collection bag is unfolded at the start of the dust collection operation, the paper wall on the back side of the bag body located on the back of the support plate is:
The air pressure of the air sucked from the suction port and colliding linearly with the paper wall on the back side is directly received. At this time, the presence of the bellows formed on both sides in the width direction of the bag body will serve to buffer the wind pressure until the valley fold of the bellows is fully extended, but the valley fold is fully extended. If this happens, the wind pressure acting on the paper wall on the back side of the bag body will distort the support plate fixed to the entrance of the dust collection chamber with a hook or the like, or the sticking part between the support plate and the bag body will be distorted. It will act in the direction of peeling. Therefore, distortion of the support plate due to the wind pressure,
In order to prevent the sticking part between the support plate and the bag body from peeling, the depth of the dust collection chamber should be made shorter, and the valley fold of the bellows should not be completely extended. Abutting against a rib end formed on the rear side wall surface of the dust collecting chamber to suppress the bag body from further expanding to the rear side, and to support the paper wall on the rear side of the bag body with the rib end. Thus, it is considered that the design is made to distribute the wind pressure acting on the paper wall on the back side of the bag body.

However, the design considerations in the dust collection chamber of the vacuum cleaner described above are unique to each vacuum cleaner manufacturer that is performed with the genuine dust collection bag in mind, and are provided in the dust collection chamber. The concavo-convex structure such as the ribs provided is complicated and diverse, and it is difficult to dimensionally represent the concavo-convex structure in the dust collection chamber. Therefore, when designing a common-type dust collection bag, the dimensions, calculation volume, and calculation of the bag body in commercially available genuine dust collection bags are used as one indicator of the structure of the dust collection chamber in each company's vacuum cleaner. As a result of summarizing the upper surface area and the like in a list, the results are as shown in Table 1 below.

[0012]

[Table 1]

These dust collecting bags are generally as shown in FIG. 13 (a). Bellows portions 104, 105 are formed on both sides in the width direction of a bag main body 102 formed of a paper filter medium in a horizontally long cylindrical shape. The end sealing portions 106, 106 are formed by folding both sides in the longitudinal direction, and a suction port is formed in the middle of the longitudinal direction.
A support plate 103 made of cardboard or the like and provided with a suction port is adhered to the bag body 102 with the respective suction ports 101 aligned. "H" shown in Table 1 is the bag width of the dust bag 100, "M" is the bellows width, and "L" is the bag length.

Although the volume of the bag body 102 of this kind of dust bag 100 actually varies depending on the degree and manner of deployment, the filter medium constituting the bag body 102 expands spherically like a rubber balloon. The bag main body 102 on the back side of the support plate 103 is expanded to a substantially hexahedral shape as shown in FIG. Thus, the calculated volume of the bag body 102 when the bag body 102 is expanded into a hexahedron can be obtained from the following equation (1). Calculated volume of bag body = H × M × (LM) (1) [where, H is a bag width dimension, M is a bellows width dimension, and L is a bag longitudinal dimension. ]

Further, the calculation surface of the bag body 102 can be obtained from the following equation (2). Calculated surface area of bag body = 2 × (H + M) × L (2) [where, H is the bag width dimension, M is the bellows width dimension, and L is the bag longitudinal dimension. ]

In general, the design of the dust collecting bag aims at the continuity of the filter function, the securing of the dust collecting volume, and the like in consideration of the mounting property in the dust collecting chamber and the manner of deployment of the bag body in the dust collecting chamber. In addition, it is designed to conform to the shape and structure of the dust collection chamber. Otherwise, for example, if the size of the bag body is too large, not only the side end of the bag body will be held by the wall of the dust collection chamber, making it difficult to mount the bag body on the dust collection chamber, but also the side end of the bag body when unfolding. If the portion is caught on the wall surface of the dust collection chamber, or is held down on the wall surface and pressed down, the development is significantly inhibited. Then, the filtration area of the sucked air is insufficient, and the back pressure is instantaneously increased in the bag body, causing problems such as dust leaking from the end sealing portion and breakage of the bag, and the filter function cannot be performed. . It is also known that, when the bag body is abutted against a rib or the like on the inner surface of the dust collection chamber when the bag body is scratched or hit, the strength of the material is reduced and the frequency of occurrence of bag breakage is increased.

Accordingly, the genuine dust bag of each vacuum cleaner manufacturer is designed to conform to the shape and structure of the dust collection chamber of each vacuum cleaner. The size of the bag is a guide to the shape and structure of the dust collection chamber in each vacuum cleaner.The size of this genuine dust bag differs greatly among the vacuum cleaner manufacturers. This indicates that the shapes and structures of the chambers are significantly different. On the other hand, in the case of a common-type dust collection bag, the shape and structure itself including the dimensions of the bag main body, including the size of the bag body, are not limited to the above-described various types of dust collection chambers, regardless of the difference in the shape of the support plate. It is required to be able to conform to On the other hand, the side edge of the bag is held against the wall of the dust collection chamber, making it difficult to attach the bag.The side edge of the bag body is caught on the wall of the dust collection chamber during deployment, or it is held down by the wall. If the dimensions of the bag itself were simply reduced to prevent the bag from being unnecessarily expanded, it would be necessary to maintain the filter function as a dust collection bag and secure a sufficient dust collection capacity. Not only is it not possible, but also for dust collection chambers with a capacity larger than the volume of the bag body, mechanical properties for the toughness of the material, distortion of the support plate due to wind pressure on the back of the bag body, The structural strength of the bag, such as the problem of detachment from the bag body, will be insufficient.

[0018]

SUMMARY OF THE INVENTION Therefore, a first object of the present invention is to satisfy the original performance of a dust collection bag, such as maintaining the above-mentioned filter function and securing a dust collection capacity, and at the same time, reduce the electric power of each manufacturer. It is an object of the present invention to economically provide an improved common-type dust bag with improved compatibility with a dust collecting chamber in a vacuum cleaner. Further, a second object of the present invention is to make it easy to deploy in a dust collection chamber and to effectively utilize the space of the dust collection chamber even if the bag looks small in appearance, to maintain the filter function and to maintain the filter function. An object of the present invention is to economically provide a dust bag for a vacuum cleaner having a sufficient performance of a dust bag such as securing a dust capacity.

[0019]

Means for Solving the Problems To achieve the above object, a dust collecting bag for a vacuum cleaner according to the present invention is formed in a horizontally long cylindrical shape with a permeable filter material, and is formed on both sides in the width direction. The bellows portion is formed, the open end edges on both sides in the longitudinal direction are folded to form a terminal sealing portion, and further, in the middle of the longitudinal direction, a bag body having an inlet formed therein, and a rigid plate material. A support plate provided with a suction port is adhered to each other with the respective suction ports aligned with each other, and the laterally elongated bag body has a bag width dimension (H) of 90 to 125 mm and a bellows width dimension. (M) is 100 to 145 mm, the ratio (L / M) of the bellows width dimension (M) to the bag longitudinal dimension (L) is in the range of 1.7 to 2.7, and the end of the bag body is sealed. The stop portion is characterized in that the open edge of the folded cylindrical filter medium is adhered to each other on its inner surface. That.

The dust bag for a vacuum cleaner of the present invention will be described in more detail below. That is, the dust bag for a vacuum cleaner is, for example, as shown in FIG. The dust bag 1 is formed of a permeable filter medium in a horizontally long cylindrical shape.
Bellows portions 2 and 3 are formed on both sides in the width direction, and end sealing portions 4 and 4 are formed by winding open edges on both sides in the longitudinal direction. A suction port is formed in the middle of the longitudinal direction. The formed bag main body 6 and a support plate 7 provided with a suction port in a rigid plate material are adhered to each other with the respective suction ports 5 aligned.

By the way, when designing a common type bag intended for the present invention in consideration of the size of the genuine dust collecting bag shown in Table 1, first, the bag width dimension (H) is determined. It was required to be 135 mm or less, which is the width (H) of the dust bag of Company E. That is, in the genuine E company dust bag, the position of the center of the suction port is 20 m from the center in the width direction of the bag body.
The side of the support plate protrudes 10 mm from one side of the bag body. In other words, the dimension from the center of the suction port of the genuine dust bag of Company E to the side edge in the width direction of the bag body is (135-2) on one side.
0) / 2 = approximately 51 mm, while (1)
35 + 20) / 2 = about 78 mm. The dust bag of the company E has a mode in which the side where the support plate protrudes is placed on the lower side, and a horizontally long bag body is mounted in the left-right (horizontal) direction so that the bellows portion is developed in the vertical direction. Bag width dimension (H) is 135mm
This is because when the support plate is mounted with the side where the support plate protrudes downward as described above, the other side in the width direction of the bag body is prevented from abutting against the inner wall of the lid of the dust collection chamber and the lid is not closed. This is the limit value that is not allowed. On the other hand, for example, the bag of the genuine dust collection bag of Company A has almost the same size as the width of the dust collection chamber, but the bag width dimension (H) is 150 mm. The suction port is located at the center in the width direction of the bag body. That is, in the vacuum cleaner of Company A, the dimension from the center of the suction port to the inner walls on both sides in the width direction of the dust collection chamber is about 75 mm. If the vacuum cleaner of Company A is also used as the genuine dust bag of Company E,
As described above, the size of the dust collection bag of Company E from the suction port to one side edge in the width direction is about 78 mm. Therefore, the dimension from the center of the suction port to the inner walls on both sides in the width direction of the dust collection chamber is about 7
In the case of the 5-mm vacuum cleaner of Company A, one side in the width direction of the bag is stuck on the inner wall of the dust collection chamber.

Therefore, the upper limit of the bag width dimension (H) that can be shared by the dust collecting chambers of the vacuum cleaners of the companies A and E is 125 mm. That is, when the bag width dimension (H) is set to 125 mm or less, the position of the suction port is set to be two positions wider than the center in the bag width direction in order to accommodate the vacuum cleaner of Company E.
If it is formed at a position deviated to one side by 0 mm and one side of the support plate protrudes 10 mm from one side of the bag body, the dimension from the suction port of the dust bag to the side edge in the bag width direction is one side thereof (125-20) / 2 = approximately 53 mm, and (12
5 + 20) / 2 = approximately 73 mm, which is applicable to the vacuum cleaner of Company A in which the dimension from the center of the suction port to the inner walls on both sides in the width direction of the dust collection chamber is approximately 75 mm. Meanwhile, in the dust bag,
To ensure the required dust collection capacity, the bellows width (M)
The lower limit of the bag width dimension (H) that can be supplemented by the bag length dimension (L) is 90 mm. For this reason, in the dust collecting bag of the present invention, the bag width dimension (H) is set to 90 to 125 mm, more preferably, the bag width dimension (H) is 100 to 120 mm, particularly preferably. Is 110 mm.

On the other hand, in a dust bag having a flat end sealing portion formed by folding open ends on both sides in the longitudinal direction of the cylindrical filter medium as in the present invention, the bag width dimension is as described above. Reducing (H) is directly related to "reduction of dust collection capacity". Therefore, this bag width dimension (H) is set to 90
The width of the bellows on both sides in the width direction of the bag body (M) was intended to compensate for the reduction in the dust collection capacity of the dust bag caused by making the size smaller than that of a genuine dust bag currently on the market, that is, 125 mm. In such a case, it was found that a unique phenomenon different from the genuine dust collection bag described above occurs when the bag is deployed. That is, when the bag width dimension (H) is set to 90 to 125 mm as described above, and the bellows portions (M) formed on both sides in the width direction of the bag body are set to 125 to 145 mm, the bag body At the time of deployment, the valley fold of the bellows portion is turned outward, and the bag is deployed so that the cross section has a pseudo-elliptical shape. As described above, the width (M) of the bellows of the genuine dust bag of each manufacturer is 120 to 135 mm.
Therefore, it is considered that the depth of the dust collection chamber in which these are installed is also about 120 to 135 mm, and the bellows width (M) is 125 to 1 in the dust collection chamber having such a depth.
When the dust collection operation is started by installing a 45 mm dust collection bag,
Although the depth size of the dust collection chamber in the direction in which the valley fold portion of the bellows portion extends is narrower than the width size (M) of the bellows portions on both sides in the width direction of the bag body, the bag width size (H) is 90 to 125 mm. Assuming that the width of the dust chamber of each company is substantially the same as the width (H) of the dust bag as described above, the width of the bellows portion (M ), The depth of the dust collection chamber can be considered to be 135 to 160 mm.), So that a clear space is created in the width and height directions of the dust collection chamber. For this reason, the bag width dimension (H) is 90-
125mm narrow and the bellows width dimension (M) is 125-125
If the width is set to 145 mm, as shown in FIG. The valley folds 8 and 9 bulge out to the outside in the width direction of the bag body 6 to compensate for the narrowness of the bag width dimension (H), and at the same time, the bag width dimension (H) is narrowed in this manner. This has the effect of filling the resulting extra space in the dust collection chamber A. When the bag body 6 of the dust collecting bag 1 is unfolded as described above, the effect of the inversion of the bellows portions 2 and 3 to the outside is based on the ratio (M / M) of the bag width dimension (H) and the bellows width dimension (M). It is particularly effective when H) is in the range of 0.8 to 1.4. As described above, the bellows width dimension (M) in the dust bag 1 according to the present invention is 125 to 145 mm.
It is more preferably 130 to 140 mm, particularly preferably 140 mm, and the ratio (M / H) of the bag width dimension (H) to the bellows width dimension (M) is more preferably 0.9.
~ 1.4.

Furthermore, the inversion of the bellows parts 2 and 3 is based on the fact that the structure of the bellows parts 8 and 9 is two (so-called double gusset structure) or three or more.
Are the same, the depth of the valley folds 8 and 9 becomes shallower as the number of valley folds 8 and 9 increases, and the inversion becomes easier.
It is even more effective.

By the way, as in the case of the genuine dust collection bag of Company E, the support plates project from one side in the width direction of the bag main body and are adhered to each other so as to collect dust in the dust collection chamber. In the case of the type in which the bag is easily mounted, the position of the suction port is deviated to one side from the center in the width direction of the bag body. FIG. 14 shows a case in which the unit is mounted on a vacuum cleaner of a type that expands left and right (horizontally).
As shown in (a), the dust bag 100 has a state in which the center O ₁ of the bag body 102 is deviated to one side from the center O _{2 in} the width direction of the dust collecting chamber A. 14B, one bellows portion 104 in the width direction of the dust collecting bag 1 is pressed against the side wall of the dust collecting chamber A, as shown in FIG. Even if the bellows portion 105 is turned outward and fully deployed, a wasteful space is created in the dust collecting chamber A, and the filter function of the dust bag 100 cannot be effectively used. In such a case, as shown in FIG. 3 (a), one of the bellows portions 2, 3 formed on both sides in the width direction of the bag body 6 of the dust collecting bag 1 has a single gusset structure, and the other has a double gusset structure. The width of the bellows 2 and 3 on both sides is different between the one side and the other side, for example, by changing the width of the bellows 3 on the side where the support plate 7 protrudes. When the dust bag 1 is expanded by making it wider than the width of the bellows 2 on the side,
As shown by the phantom line in FIG. 3, the filter function of the bag body 6 can be prevented without generating a useless space in the dust collecting chamber A or preventing the bag main body 6 from being held on the wall of the dust collecting chamber A to suppress the deployment. It can be used effectively.

Next, the longitudinal dimension (L) of the bag main body 6 made of a horizontally long cylindrical filter medium in the dust collecting bag 1 according to the present invention will be described. As described above, in the case of the dust bag 1 according to the present invention, since the bag width dimension (H) is set smaller than that of the conventional dust bag, the dust collection volume and the surface area of the filter medium are reduced. To secure them, the bellows width (M) and the bag longitudinal dimension (L) are supplemented. However, there is a restriction in compensating for the dust collection volume and the filter medium surface area by increasing the bag longitudinal dimension (L). The reason is that, as described above, in the case of the dust collecting bag 1 of the present invention, the bag width dimension (H) is set smaller while the bellows width dimension (M) is set larger than the conventional dust collecting bag. By doing so, the bellows portions 2 and 3 are turned outward when the bag is unfolded, so that the bag width dimension (H) is shortened, thereby preventing wasteful space from being generated in the dust collection chamber. The dust collecting bag 1 of the present invention does not expand in a hexahedral shape unlike the conventional dust collecting bag 100 shown in FIG. 13, and both sides in the longitudinal direction of the bag main body 6 do not completely bend and are slightly extended. Will be expanded to. For this reason, when the longitudinal dimension (L) of the bag body is too long, both sides in the longitudinal direction of the bag body 6 are held down by the side wall surface of the dust collection chamber A, and the development is suppressed. , Resulting in reduced filter function. For this reason, in the dust bag 1 according to the present invention, the dimension (L) in the longitudinal direction is used.
Is restricted in relation to the width (M) of the bellows portion, and the bellows width (M) is set so as not to be caught on the inner wall of the dust collection chamber A or to be held down by the wall during deployment. ) And the bag longitudinal dimension (L) have an upper limit of 2.7 (L / M), preferably 2.3. On the other hand, the ratio (L) of the bellows width dimension (M) and the bag longitudinal dimension (L) is meant to compensate for the reduction in the dust collection volume and the decrease in the surface area of the filter medium due to the shortened bag width dimension (H). / M) is at least 1.7, preferably at least 1.78.

Next, the bag body 6 in the dust collecting bag 1 of the present invention.
The terminal sealing portions 4 on both sides will be described. as mentioned above,
The dust bag 1 according to the present invention has the valley folds 8 and 9 of the bellows portions 2 and 3 on both sides in the width direction of the bag body 6 turned outward.
The cross section is developed so as to have a pseudo-elliptical shape (FIG. 4A)
To (c). ). For this reason, at the time of deployment, the bag is located near the intersections a and b between the terminal sealing portions 4 and 4 and the valley folds 8 and 9 of the bellows portions 2 and 3 shown in FIG. Particularly large force acts when the main body 6 is deployed. In the conventional dust bag, the end sealing portion 106 is folded in two steps so that the tip 107 of the open end of the cylindrical filter medium is located at the innermost side as shown in FIG. And the tip 10
The flat surface 109 between 7 and the first crease 108 is
2 was bonded and fixed to the surface with an adhesive 110. However, in the structure of the end sealing portion 106 of the conventional dust collecting bag 100, like the dust collecting bag 1 of the present invention, the valley folded portions 8, 9 of the bellows portions 2, 3 on both sides in the width direction of the bag main body 6 are provided. Is expanded outward so that the cross section has a pseudo-elliptical shape, a large force acts on the end sealing portion 4 to expand it. For this reason, as shown in FIG.
The flat surface 109 between the fold 108 and the first fold 108
In the case where only the adhesive is fixed to the surface by the adhesive 110, as shown in FIGS. 15 (b) to 15 (c), the folded end sealing portion 106 is unwound as the bag is unfolded. . Further, when the bellows portions 2, 3 near the center of the bag body 6 are turned outward from the bag body 6, the intersection of the bellows portions 2, 3 and the end sealing portion 4 as shown in FIG. Since the a and b portions are each pulled in the vertical direction and more force acts in the direction in which the terminal sealing portion 4 is expanded, the risk of breaking the sealing structure of the terminal sealing portion 4 increases. In this case, the bellows portions 2 and 3 each have a double gusset structure having two valley fold portions so that the depth of each valley fold portion 8 and 9 is reduced, so that the bellows portions 2 and 3 and the end sealing portions are sealed. Although the force of pulling the intersections a and b with the part 4 in the vertical direction can be reduced somewhat, in this case, the folded paper of the bellows parts 2 and 3 (filter medium) in the end sealing part 4 On the other hand, there is a possibility that a gap is likely to be generated because the number of sheets increases in ()).

Therefore, in the dust collecting bag 1 according to the present invention, the open ends of the folded cylindrical filter medium are adhered to each other on their inner surfaces. Specifically, as shown in FIG. 6 (a), the two-stage folds 16 and 17 are folded so that the tip 13 to which the inner surfaces of the open edges of the cylindrical filter medium are adhered to each other is located at the innermost position. The flat surface 14 between the front end portion 13 and the first fold 16 is wound and fixed to the surface of the bag body 6 with an adhesive 18 or the like. By sticking the open edges of the folded cylindrical filter medium to each other on the inner surfaces in this manner, even when the bag body 6 is unfolded as shown in FIG. Part 4
Thus, it is possible to reliably prevent the sealing structure at the open edge of the filter medium from being broken.

[0029]

FIG. 7 is a perspective view showing one embodiment of a dust bag 1 for a vacuum cleaner according to the present invention.
FIG. 8 is a longitudinal sectional view thereof. In the figure, what is indicated by reference numeral 6 is a bag body made of a permeable filter medium, and the bag body 6 is formed in a horizontally long tubular shape, and bellows parts 2, 3 are provided on both sides in the width direction. End sealing portions 4, 4 are formed at the open edges on both sides in the longitudinal direction, and a suction port is formed in the middle in the longitudinal direction. Reference numeral 7 in the drawing denotes a support plate provided with a suction port in a rigid plate material. And
The bag body 6 and the support plate 7 are aligned with each other to form the suction port 5 of the dust bag 1, and the peripheral portion of the suction port 5 on the front side of the bag body 2 and the back surface of the support plate 3. The peripheral portion of the suction port 5 is adhered to each other, and the support plate 7 constitutes the dust collection bag 1 with one side 11 protruding from one side in the width direction of the bag body 6. .

The bag body 6 having a horizontally long tubular shape has a bag width dimension (H) of 90 to 125 mm, preferably 100 to 120 mm.
mm, the bellows width of the bellows 2 and 3 (M), ie, in the bellows 2, [bellows width M ₂ = (depth m ₂ of valley fold 8) × 4], and In the bellows part 3, the value of [bellows part width dimension M ₃ = (depth m ₃ of valley fold part 9) × 4] is 1
25 to 145 mm, preferably 110 to 140 mm, and the ratio (L / M) of the bellows width dimension (M) to the bag longitudinal dimension (L) is 1.7 to 2.7. Designed to be a range. By setting the size of the bag body 6 in the above range, as described above, when the bag body 6 is deployed in the dust collection chamber, the bellows parts 2 and 3 are deployed so that the bellows parts 2 and 3 are turned outward. Although the bag width dimension (H) is short and the dust bag has a seemingly compact outer shape, no wasteful space is generated in the dust collecting chamber at the time of deployment.

The material of the bag body 6 is, for example, a non-woven fabric or a thin paper such as a non-woven fabric or thin paper which allows air to pass through but does not allow dust to pass therethrough, and a non-woven fabric or thin paper which also allows air to pass but does not allow dust to pass through. 1 or 2
The filter material is formed by laminating a plurality of sheets into a horizontally long cylindrical shape by laminating and sticking both sides in the width direction to each other. As the air permeability of the filter medium, the air permeability measured according to JIS P8117 is 0.30 to 0.11 sec / 20.
It is possible to use those having a suction power of 40 ml in the range of 0 ml.
It is preferable to cope with a recent vacuum cleaner having a high power of 0 to 560 W. Bellows portions 2 and 3 are formed on both sides in the width direction of the horizontally long cylindrical filter medium. In this embodiment, the bellows 2 and 3 each have a double gusset structure, but the depth m ₃ of the valley fold 9 of the bellows 3 on the side where the support plate 7 protrudes is set to the other side. and deeper than the depth m ₂ of the valley folding portion 8 of the bellows portion 2 of a width dimension M ₂ of the bellows portion 2 the width M ₃ of the bellows part 3
It is formed larger. As described above, the support plate 7 is projected from one side of the bag body 6 and attached to the bag body 6 so that the horizontally long bag body 6 can be mounted in the horizontal (left / right) direction to collect the dust in the dust collection chamber. The attachment of the dust bag 1 becomes easy, while the bag body 2
Of the bellows 2, 3 located on both sides of the bellows 2, the width M ₃ of one bellows ₃ from which the support plate 7 protrudes is set to the other bellows 2.
By forming greater than a width dimension M _2, a vertical (up and down) oblong bag body 6 when the mode of the vacuum cleaner to be mounted in the direction, one side bag body 6 than the center in the width direction of the dust collecting chamber When the bag body 6 is unfolded, wasteful space is created on the left and right sides of the dust collecting chamber, and the bellows 2,
This prevents the bag 3 from being caught on the wall surface of the dust collection chamber or being pressed against the wall surface, so that the bag body 6 is not wrinkled and the filter function is not deteriorated.

The horizontally long cylindrical filter medium of the bag body 6 is formed with the open end edges on both sides of the front side or the back side of the dust bag 1 to form the end sealing portion 4. As shown in FIG. 9, the end sealing portion 4 is formed by applying the adhesives 15, 15 in two lines over the entire inner surface of the open end of the bag body 6 made of a cylindrical filter material,
As shown in FIG. 10, the bellows portions 2 and 3 on both sides are folded and pressure-bonded, and the inner surfaces of the open ends of the cylindrical filter medium of the bag body 6 are adhered to each other. Then, as shown in FIGS. 11 and 12, the end of the cylindrical filter medium is placed on the front side or the back side of the first fold 16 and the second fold 17 so that the tip 13 is located at the innermost position. After folding in two stages at the point, the first fold 16 and the tip 13
Is bonded to the surface of the bag body 6 with an adhesive 18 to form the end sealing portion 4. When forming the end sealing portion 4 by folding the open edge of the cylindrical filter medium as described above, it is preferable to bend each at a position inside the cylindrical filter medium from a sticking position on the inner surface of the filter medium. Agent 15
It is effective to bend the immediate inside of the sticking part on which the is applied. It should be noted that the number of the sticking portions between the inner surfaces of the cylindrical filter medium and the number of the sticking portions of the folded end sealing portions 4 are not particularly limited. The adhesive 15 may be applied to a place or only one place. When the sticking position of the inner surface of this cylindrical filter medium is only one place,
It is better to omit the inner sticking part. In this manner, by forming the end sealing portion 4 by sticking the inner surfaces of the tubular filter medium together and folding the end surfaces, the bellows portions 2 and 3 are turned outwardly when used in a high-power vacuum cleaner. Also, there is no fear that the sealing structure of the terminal sealing portion 4 is broken and dust is leaked.

In the illustrated example, the open end of the folded cylindrical filter medium is adhered to the surface of the bag body 6 with an adhesive 18 applied thereto, but the adhesive 18 is folded. It goes without saying that the coating may be applied to the flat portion 14 on the open edge side. An adhesive 15 for sealing the end sealing portion 4;
As 18, a solvent type adhesive can be used,
It is preferable to use a hot-melt type adhesive since facilities and labor for evaporating the solvent are not required, and the bonding step can be completed in a short time. Furthermore,
When the cylindrical filter medium is made of a non-woven fabric made of a thermoplastic resin, it can be bonded by heat sealing.

Next, the support plate 7 attached to the front side of the bag body 6 is made of a rigid plate material such as cardboard or synthetic resin. It is formed so that it can be installed in the dust collection chamber of the machine. For example, the support plate 7 in the dust collecting bag 1 of the embodiment shown in FIGS. 7 and 8 has a suction port 5 formed at a substantially central portion thereof, and an elastic member provided at a peripheral portion on the surface side of the suction port 5. A packing part 19 is provided as necessary, and
On one side of the support plate 7, a first guide portion 20, a second guide portion
Two guide portions 21 are connected to each other so as to be releasable by perforations 22 and 23, and an adjusting groove 24 and mounting holes 25 to 27 are provided on the other side of the support plate 7, respectively. According to the size, shape and structure of the mounting portion in the dust collecting chamber in various vacuum cleaners, the guide portions 20, 21 or the adjusting groove 24, and further the mounting hole 25.
27 can be easily cut off with a finger or the like, so that they can be mounted corresponding to the dust collection chambers of the respective vacuum cleaners.

The shape and structure of the support plate 7 and the positional relationship between the bag body 6 and the support plate 7 are not particularly limited, and various modes can be adopted. Alternatively, the guide portions 20 and 21 of the support plate 7 may be arranged in a direction orthogonal to the longitudinal direction of the bag body 6.

[0036]

As described above, the dust bag for a vacuum cleaner according to the present invention has a bag width (H) of 90 to 125 mm, a bellows width (M) of 125 to 145 mm, and a bellows width. The ratio (L / M) of the dimension (M) to the bag longitudinal dimension (L) is 1.7.
By setting the range of ~ 2.7, although the width of the bag body is short and extremely compact, a wasteful space is generated in the dust collecting chamber corresponding to the dust collecting chamber of the vacuum cleaner of each manufacturer. Without being caught on the wall of the dust collection chamber,
It is possible to secure a sufficient dust collection volume and to exhibit a sufficient filter function without being hindered by being held down on the wall surface to prevent the bag from being unfolded. In addition, since the inner surfaces of the open ends of the cylindrical filter medium are adhered to each other at the terminal seal portion of the bag body formed by folding the open both ends of the cylindrical filter medium, the terminal seal is formed by the adhesive portion and the fold. When the stop portion is securely sealed and the suction power is 400 to 560 W and is in a high-power vacuum cleaner, and the bellows portions on both sides in the bag width direction are deployed outward as described above. In addition, it is possible to reliably prevent dust from leaking from the end sealing portion. Furthermore, the width dimension (M) of the bellows portions formed on both sides in the width direction of the bag body is different between the one side and the other side, and the suction port formed in the bag body is different from the bag body in width. In which the bag body and the support plate are adhered to each other in a state where one side of the support plate protrudes from one side in the width direction of the bag body on the biased side. Since the support plate is biased to one side in the width direction of the bag body, the longitudinal direction of the bag body is set to the horizontal (horizontal) direction, and the bellows on both sides in the width direction expand in the vertical (vertical) direction. The vacuum cleaner can be easily installed in the dust collection chamber, and the bellows on both sides in the width direction are expanded in the horizontal (horizontal) direction by rotating the vacuum cleaner by 90 ° with respect to the above case so that the longitudinal direction is the vertical (vertical) direction. When installed in the dust collection chamber of a vacuum cleaner of the following type, the center of the suction port of the support plate and the mouth of the dust collection chamber Even if the center of the bag body in the width direction is shifted from the front, there is a gap between the dust collection bag expanded in the dust collection chamber and the wall of the dust collection chamber, or if the bellows is not fully deployed. It does not overlap and troubles, waste of collection efficiency and economic waste are eliminated. Therefore, the dust bag according to the present invention is mounted in such a manner that the longitudinal direction of the horizontally long bag body is set in the left-right (horizontal) direction, and the bellows portions on both sides in the width direction are developed in the vertical direction. Applicable to vacuum cleaners of different manufacturers, which can be installed in the vertical (vertical) direction and the bellows on both sides in the width direction can be expanded horizontally. It is possible to economically provide a compact dust collection bag that is compact and can secure a sufficient dust collection volume and filtration area, and has excellent filter function.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a structure of a dust collecting bag for a vacuum cleaner according to the present invention, in a partially broken state.

FIG. 2 is a schematic plan cross-sectional view of a dust collecting chamber portion showing a deployed state of the dust collecting bag for a vacuum cleaner according to the present invention in the dust collecting chamber.

FIG. 3 is a schematic plan cross-sectional view of a dust collecting chamber showing a state where a bellows portion of another dust collecting bag according to the present invention is deployed.

FIGS. 4A and 4B are schematic views showing a deployed state of the dust bag according to the present invention, wherein FIG. 4A is a front view, FIG. 4B is a plan view, and FIG.

FIG. 5 is a sectional view taken along the line XX in FIG. 4 (a) showing a state of the terminal sealing portion when the dust collecting bag is deployed.

FIGS. 6A and 6B are schematic cross-sectional views showing a state of a terminal sealing portion when the dust bag according to the present invention is deployed.

FIG. 7 is a perspective view showing one embodiment of a dust bag according to the present invention.

FIG. 8 is a vertical sectional view of the dust bag.

FIG. 9 is a schematic perspective view of a main part showing a portion to be adhered between inner surfaces of the cylindrical filter medium in an end sealing portion of the dust collecting bag.

FIG. 10 is a schematic perspective view of a main part showing an attached state of the terminal sealing portion.

FIG. 11 is a schematic perspective view of a main part showing a state in which the terminal sealing portion is folded.

FIG. 12 is a schematic perspective view of a folded end sealing portion.

FIG. 13 (a) is a schematic perspective view of a conventional dust bag for a vacuum cleaner, and FIG. 13 (b) is a schematic perspective view showing a state where the dust bag is opened.

FIG. 14 (a) is a collection showing a state in which a conventional dust-collecting bag whose support plate protrudes from one side of the bag body is attached to an electric cleaner of a type in which the bellows on both sides of the bag body expand in the left-right (lateral) direction. FIG. 3B is a schematic plan sectional view of the dust collecting chamber, showing a state where the dust bag is inflated.

FIGS. 15A to 15C are schematic cross-sectional views showing a temporal change of an end sealing portion when a conventional dust bag is developed.

[Explanation of symbols]

1 dust collection bag, 2 bellows part, 3 bellows part, 4 terminal sealing part, 5 suction port, 6 bag body, 7 support plate, 8
Valley fold, 9 valley fold, 11 side of support plate, 13 tip of cylindrical filter medium, 14 flat, 15 adhesive, 16 first fold, 17 second fold, 18 adhesive, 19 packing 20 first guide section, 21 second guide section,
22 perforation, 23 perforation, 24 adjustment groove, 25 mounting hole, 26 mounting hole, 27 mounting hole, 100 dust bag, 101
Inlet, 102 bag body, 103 support plate, 104 bellows, 105 bellows, 106 end seal, 107 tip, 108 fold, 109 flat surface, 110 adhesive,
A Dust chamber, H bag width, L bag length, M
Bellows width.

Claims (8)

[Claims] 1. An air-permeable filter medium is formed in a horizontally long tubular shape, bellows portions are formed on both sides in the width direction, and an end sealing portion is formed by folding open edges on both sides in the longitudinal direction. Further, a bag body having a suction port formed in the middle thereof in the longitudinal direction, and a support plate provided with a suction port on a rigid plate material are adhered to each other in a state where the respective suction ports are aligned. The bag body has a bag width dimension (H) of 90 to 12.
5 mm, bellows width dimension (M) is 125 to 145 mm, ratio of bellows width dimension (M) to bag longitudinal dimension (L) (L / M)
Is in the range of 1.7 to 2.7, and the end sealing portions on both sides in the longitudinal direction of the bag body are formed by sticking the open edges of the folded cylindrical filter material to each other on the inner surfaces thereof. Dust collection bag for vacuum cleaner. 2. A bag width dimension (H) of the bag body is 100 to 100.
120mm, bellows width dimension (M) 130-140m
m, the ratio (L) between the bellows width dimension (M) and the bag longitudinal dimension (L)
The dust collection bag for an electric vacuum cleaner according to claim 1, wherein (/ M) is in the range of 1.78 to 2.3. 3. A bag width dimension (H) of the bag body is 110 m.
m, the bellows width (M) is 140 mm, and the ratio (L / M) of the bellows width (M) to the bag length (L) is 1.78.
The dust collection bag for an electric vacuum cleaner according to claim 1, which is in a range of -2.3. 4. The dust bag for an electric vacuum cleaner according to claim 1, wherein the bellows portions formed on both sides in the width direction of the bag body have two or more valley fold portions. 5. An inlet formed in the bag body is biased to one side in the width direction of the bag body, and one side of the support plate from one side in the width direction of the bag body on the biased side. The dust bag for an electric vacuum cleaner according to claim 1, wherein the bag body and the support plate are adhered to each other in a state in which the bag projects. 6. The dust-collecting bag for a vacuum cleaner according to claim 5, wherein the bellows portions formed on both sides in the width direction of the bag body have different width dimensions (M) on one side and the other side. . 7. The end sealing portions formed on both sides in the longitudinal direction of the bag main body are folded at two-stage folds so that the tip of the open edge of the cylindrical filter medium is located inside. The flat surface between the front end and the first fold is adhesively fixed to the bag body surface.
Or the dust collection bag for vacuum cleaners of 6. 8. A common type applicable to a vacuum cleaner having a different structure of a dust collecting chamber.
The dust bag for an electric vacuum cleaner according to 6 or 7.