JP5124607B2 - Dust collection bag for electric vacuum cleaner and electric vacuum cleaner - Google Patents

Description

  The present invention relates to a reusable vacuum cleaner dust bag and a vacuum cleaner to which the dust bag can be attached.

  As a reusable dust collecting bag for an electric vacuum cleaner, Patent Document 1 discloses an electric vacuum cleaner having a lid that is formed on a top surface of a main body so as to be part of a dust collecting chamber and can be freely opened and closed or detached. A dust collecting bag having a holding tool that is detachably attached to a dust outlet formed at the bottom of the bag portion, and holds and closes the dust outlet, and an intake port is formed at the tip of the bag portion. A vacuum cleaner dust bag having a wick attached to a side surface in the vicinity is described.

Microfilm of Japanese Utility Model Application No. 61-64614 (Japanese Utility Model Application Publication No. 62-177474)

  In the dust collection bag for a vacuum cleaner described in Patent Document 1, since the dust collection bag is small with respect to the dust collection chamber, as shown in FIG. Since the entire dust bag expands and the dust outlet (holding tool) is stretched, tension is applied to the dust outlet. is there.

  Moreover, in the dust collecting bag for electric vacuum cleaners described in Patent Document 1, since the dust outlet is formed in the dust collecting bag and the holding tool is attached, the usage is limited to the use of the holding tool. As a result, there are fewer user options and there is a risk of impairing usability.

  Moreover, in the dust collection bag for electric vacuum cleaners described in Patent Document 1, dust (dust) adheres to the inner surface of the dust collection bag, which may make it difficult for the user to throw away the dust (dust).

  A first object of the present invention is to provide a dust collection bag for a vacuum cleaner and a vacuum cleaner in which the dust collection bag can be reused.

  A second object of the present invention is to provide a vacuum cleaner collector that suppresses dust from being ejected from the dust discharge opening even when the dust discharge opening of the dust bag is closed with a detachable member. It is to provide dust bags and vacuum cleaners.

A third object of the present invention is to provide a dust bag for a vacuum cleaner and a vacuum cleaner that allow a user to select a method for discarding the dust bag as it is and a method for reusing the dust bag. .
A fourth object of the present invention is to provide a dust collecting bag for an electric vacuum cleaner and an electric vacuum cleaner that facilitate the discharge of dust from the inside of the dust collecting bag.

In the present invention, in the state where the bag member is inflated by being attached to the vacuum cleaner, a part of the outer surface of the bag member hardly expands, and a part of the outer surface of the bag member is a bag member accommodating chamber (for example, a collecting chamber). intake side of the dust collecting part) within (e.g., in an electric vacuum cleaner dust bag which contacts the back surface), the upper portion of the bag member is opened, the upper opening of the bag member is bonded to the lower portion of the bag member, A cut line is formed in the left and right direction of the bag member, and the lower opening of the bag member formed by the cutting is closed by the detachable member, and the bag member is attached to the vacuum cleaner in the state of the mouth plate. The length from the upper and lower center of the opening to the bottom surface in the bag member mounting chamber of the vacuum cleaner is shorter than the length from the upper and lower center of the opening in the mouthplate to the upper surface of the bag member mounting chamber of the vacuum cleaner. .

  The present invention is characterized in that the inner layer of the bag member is made of a material containing polytetrafluoroethylene, and the lower opening of the bag member is closed by a removable member (for example, a clamp).

  According to the present invention, since the lower opening of the bag member is closed by the removable member, the dust in the bag member can be closed by the removable member after discharging the dust from the lower opening. can do.

  According to the present invention, when the bag member is mounted on the vacuum cleaner and inflated, a part of the outer surface of the bag member is inhaled in the bag member housing chamber of the vacuum cleaner while the lower part of the bag member hardly expands. A member that can attach and detach the dust discharge opening of the dust bag because the detachable member is not greatly displaced or detached from the side where the dust discharge opening of the bag member is formed by contacting the side surface. In the case of closing with, it is possible to suppress the dust from being ejected from the dust discharge opening despite the blockage.

  According to the present invention, a cut line is formed in the left and right direction of the bag member at the lower part of the bag member, and the lower opening of the bag member formed by being cut off is closed by the removable member. The user can select a method of discarding the dust bag as it is and a method of reusing the dust bag, thereby improving the usability. Further, according to the present invention, a cutting line is formed in the left and right direction of the bag member at the lower part of the bag member, so that the user can easily recognize the cutting position.

  According to the present invention, the inner layer of the bag member is made of a material containing polytetrafluoroethylene, so that the dust can be easily discharged from the dust collection bag.

It is an external appearance perspective view of the vacuum cleaner of this invention. It is an external appearance perspective view of the cleaner body of the present invention. It is a center longitudinal cross-sectional view of the cleaner body of this invention. It is an external appearance perspective view of the dust collection bag of this invention. It is an external appearance perspective view of the clamp of the present invention. It is an external appearance perspective view of the dust collection bag of this invention. It is a side view of the dust collection bag of this invention. It is an enlarged view of the E section of FIG. It is an external appearance perspective view of the dust collection bag of the other Example (Example 2) of this invention.

  In the present invention, in the state where the bag member is inflated by being attached to the vacuum cleaner, a part of the outer surface of the bag member hardly expands, and a part of the outer surface of the bag member is a bag member accommodating chamber (for example, a collecting chamber). In the dust bag for a vacuum cleaner that contacts the intake side surface (for example, the back surface) in the dust part 5), the upper and lower sides of the bag member are opened, the upper opening of the bag member is joined, and the lower opening of the bag member is attached and detached. It is characterized by being blocked by a possible member (eg clamp 27).

  In the present invention, a cut line is formed in the left and right direction of the bag member at the lower part of the bag member, and the lower opening of the bag member formed by cutting is closed by a removable member (for example, the clamp 27). It is characterized by that.

  The present invention is characterized in that the inner layer of the bag member is made of a material containing polytetrafluoroethylene, and the lower opening of the bag member is closed by a removable member (for example, a clamp 27).

  Embodiments 1 and 2 of the present invention will be described below with reference to the drawings.

  FIG. 1 is an external perspective view showing a vacuum cleaner according to an embodiment of the present invention. FIG. 2 is an external perspective view showing a state in which the upper body case 4 and the lid 8 are separated from the lower body case 3 of the cleaner body according to the embodiment of the present invention. FIG. 3 is a central longitudinal sectional view of the cleaner body according to the embodiment of the present invention. 2 and 3 show a state in which the dust bag 20 is swollen in the dust collecting portion 5.

  As shown in FIG. 1, in the vacuum cleaner 1, a connection joint 12 a that is one end of a hose 12 is connected to a hose connection port portion 10 of a cleaner body 2, and one end of a hand operating tube 13 is connected to the other end of the hose 12. It is connected. The hand control tube 13 is provided with a switch 16 for the user to switch the operation mode of the electric vacuum cleaner 1 such as the strength of the suction force of the electric blower 9. One end of an expansion joint pipe 14 is connected to the other end of the hand operation pipe 13, and a substantially T-shaped floor suction port 15 is connected to the other end of the expansion joint pipe 14. The suction port 15, the expansion joint pipe 14, and the hand control pipe 13 are detachable from each other by a user's operation, and the hose 12 and the cleaner body 2 are detachable from each other by a user's operation. The expansion joint pipe 14 can be expanded and contracted by a user operation. Instead of the expansion joint pipe 14, a joint pipe that does not expand and contract may be used. An auxiliary suction port (attachment) different from the floor suction port 15 may be connected between the suction port 15 and the expansion joint tube 14 or between the expansion joint tube 14 and the hand control tube 13.

  As shown in FIG. 2, the vacuum cleaner main body 2 has an outer case formed by the upper main body case 4, the lower main body case 3, and the lid 8. On the rear side of the cleaner body 2, an electric blower 9 that generates suction force and a power cord 19 for supplying electric power to the electric blower 9 are incorporated. The power cord 19 is wound around a cord reel installed in the cleaner body 2. The electric blower 9 and the cord reel are arranged adjacent to each other in the left-right direction of the cleaner body 2. A dust collection part (dust collection chamber) 5 is formed on the front side of the electric blower 9. The front side of the dust collection part 5 communicates with the hose connection port part 10, and the rear side of the dust collection part 5 communicates with the electric blower 9 via the protective filter 18. That is, the hose connection port portion 10 is formed on the front surface of the dust collection portion 5, and the protective filter 18 is formed on the rear surface of the dust collection portion 5. A dust collection bag 20 is detachably attached to the dust collection unit 5. However, the protective filter 18 is not an essential configuration. In addition, the front side of the cleaner body 2 is a side where the hose connection port 10 is disposed, and the rear side is the opposite side. The up-down direction of the cleaner body 2 is the up-down direction when the cleaner body 2 is placed horizontally (in use). The left-right direction of the cleaner body 2 is a direction perpendicular to the front-rear direction and also perpendicular to the up-down direction.

  Due to the suction force when the electric blower 9 is driven, dust-containing air is sucked from the suction port 15, and the sucked dust-containing air is cleaned from the hose connection port portion 10 through the expansion joint pipe 14, the hand operation pipe 13 and the hose 12. The air is sucked into the machine main body 2 and dust is collected (collected) by the dust bag 20. The air flow that has passed through the dust collection bag 20 is sucked into the electric blower 9 through the protective filter 18 and pressurized. Fine dust that has not been collected by the dust bag 20 is collected by filtration with an exhaust filter 32 disposed on the upper rear side of the electric blower 9, and the air is exhausted outside the cleaner body 2. Even if the exhaust filter 32 has a higher ventilation resistance than the dust collection bag 20, it is preferable that the dust collection rate is high.

  As shown in FIGS. 2 and 3, the vacuum cleaner body 2 has a dust collection bag 20 detachably mounted in a dust collection portion 5 disposed between the upper body case 4, the lower body case 3, and the lid 8. Yes. The lid 8 is rotatably attached to the upper side of the upper body case 4. The dust bag 20 is taken in and out by opening the lid 8, the dust bag 20 is inserted into and attached to the dust collecting part 5, the upper lid 8 is closed, and the electric vacuum cleaner 1 is operated.

  Further, in the dust collecting part 5, the dust remaining in the dust collecting part 5 is prevented from being sucked into the electric blower 9 between the dust bag 20 and the electric blower 9 to protect the electric blower 9. A protective filter 18 is provided, and a dust removal unit 7 is disposed. The outer surface of the bag member 21 inflated by dust comes into contact with the dust removal unit 7. The dust removing unit 7 swings and vibrates the outer surface on the back side or the upper side of the bag member 21, so that dust attached to the inner surface of the bag member 21 is shaken down into the bag member 21. The dust removal operation by the dust removal unit 7 is performed when the user instructs the stop of the operation of the vacuum cleaner 1, when the user instructs the start of the operation of the vacuum cleaner 1, or according to any instruction of the user. Are preferred.

  The lower body case 3 includes a traveling wheel 11 and a guide wheel 40 for causing the cleaner body 2 to travel on the floor surface. The traveling wheels 11 are disposed on the left and right side surfaces of the rear portion of the lower main body case 3, and the guide wheels 40 are disposed on the bottom surface of the front portion of the lower main body case 3. Further, a handle 6 is attached to the upper part of the upper body case 4 so as to be able to appear and retract, so that the user can carry the cleaner body 2.

  A sealing member made of an elastic body integrated with a connection joint 12a of the hose 12 inserted into the hose connection port 10 and a check valve 31 for suppressing dust from spilling (reverse flow) into the hose 12 is in an airtight state. When the check valve 31 is opened, a dust-containing airflow flows into the dust bag 20 from the inlet 30 through the opening 26 provided in the dust bag 20. Here, the seal member integrated with the check valve 31 has a function of closely contacting the mouth plate (core) 22 provided in the dust bag 20 to prevent dust from spilling.

  Next, the arrangement inside the cleaner body 2 will be described. The hose connection port 10 is arranged at the approximate center in the width direction (left-right direction) of the cleaner body 2 as viewed from above and on the front surface of the cleaner body 2. Similarly, the opening 26 which is the inflow portion of the dust collection bag 20 is also arranged at the approximate center in the width direction (left-right direction) of the dust collection portion 5 and on the front surface in the dust collection portion 5. By arranging in this way, it is not necessary to provide a bend or the like at the inlet portion of the dust collecting portion 5, so that ventilation loss can be reduced.

  Next, the dust collection part 5 is demonstrated with reference to FIG. 3, FIG. FIG. 8 is an enlarged view of a portion E in FIG.

  As shown in FIG. 3, a holder 36 having a shape recessed downward is provided at the front lower part (below the inlet 30) in the dust collecting unit 5, and the mouth plate 22 is formed in the recessed part of the holder 36. The lower end of the is detachably mounted. The holder 36 is provided with a rotation shaft 37 extending in the left-right direction of the cleaner body 2, and the holder 36 can tilt in the front-rear direction of the cleaner body 2. A ring spring is attached around the rotation shaft 37, and the rotation shaft 37 is urged clockwise in FIG. 3 by the ring spring. Therefore, the concave hole of the holder 36 is biased so as to face upward and rearward.

  A clamp 28 having a substantially U-shaped side section is provided on the upper part of the front surface of the dust collecting unit 5 (above the inlet 30). One end of the substantially U-shape of the clamp 28 forms a locking portion 38. On the outer side of the substantially U-shaped locking portion 38 of the clamp 28, a hook 29 is formed extending outward. On the outer side of the clamp 28 opposite to the substantially U-shaped locking portion 38, a reinforcing portion 33 formed to extend outward is provided. In a state where the mouth plate 22 is held by the locking portion 38 provided on the clamp 28 and the lid 8 is closed, the reinforcing portion 33 provided on the clamp 28 is provided by a rib 34 extending downward at the lower front end of the lid 8. It is locked. For this reason, even when the electric blower 9 is driven in a state where dust is accumulated in the dust collection bag 20, the dust collection bag 20 is pulled toward the electric blower 9, and the mouth plate 22 is integrated with the check valve 31. It is possible to prevent separation from the elastic seal member and to prevent dust from spilling. The check valve 31 functions to prevent the dust accumulated in the dust collection bag 20 from the opening 26 provided in the dust collection bag 20 from flowing back to the connection joint 12 a provided on the hose 12. The dust bag 20 is provided with a seal member (not shown) that closes the opening 26 provided in the mouth plate 22 when the dust bag 20 is discarded after the dust bag 20 is accumulated. May be.

  In order to attach the dust bag 20 to the dust collector 5 in the cleaner body 2, the lower end of the mouth plate 22 of the dust bag 20 is attached to a holder 36 inclined to the electric blower 9 side with the rotation shaft 37 as a rotation shaft. The mouth plate 22 and the holder 36 are raised toward the front, and the engaging portion 38 provided on the clamp 28 is hooked on the upper end of the mouth plate 22 and attached. The clamp 28 can be easily attached to the dust bag 20 if the rotation shaft 35 is rotatable about the rotation shaft. The hook 29 provided on the clamp 28, the reinforcing portion 33, and the rib 39 provided on the lid 8 are not provided near the center in the width direction of the mouth plate 22, but are provided near both ends in the width direction of the mouth plate 22. .

  Next, the outline | summary of the dust bag 20 for vacuum cleaners is demonstrated using FIG. FIG. 4 is an external perspective view of the dust bag 20 according to the embodiment of the present invention. FIG. 4 shows a state in which no dust is accumulated in the dust bag 20 and the dust bag 20 is not inflated. When the dust bag 20 is not inflated, the dust bag 20 is substantially flat. 4A shows a state where the lower end of the dust bag 20 is clamped by the clamp 27, and FIG. 4B shows a state where the lower end of the dust bag 20 is not clamped by the clamp 27. .

  The dust collection bag 20 has a substantially quadrilateral mouth plate 22 made of cardboard or plastic having a circular opening 26 and paper, cloth, animal hair, or plastic having an opening corresponding to the opening 26. And a breathable bag member 21 made of a nonwoven fabric or the like. A cutout portion 25 having a depth of about 10 mm is formed at the approximate center in the left-right direction at the upper end of the mouth plate 22. The notch portion 25 has a function of a lid closing prevention member that prevents the lid 8 from being completely closed when the dust collection bag 20 is not mounted in the dust collection portion 5. Accordingly, the user can recognize that the dust collection bag 20 is not installed in the dust collection unit 5, and the vacuum cleaner 1 is operated without the dust collection bag 20 being installed in the dust collection unit 5. Can be suppressed. The side of the mouth plate 22 where the notch 25 is formed is the upper side of the dust bag 20. The bag member 21 is preferably formed by laminating different types of non-woven fabrics in the thickness direction of a plurality of layers (for example, three layers).

  As a material for the innermost layer of the bag member 21, it is preferable to use a porous film made of polytetrafluoroethylene. By using a porous film made of polytetrafluoroethylene, dust separation on the inner surface of the bag member 21 is improved, and the user can easily discharge dust from the bag member 21. Further, since the dust can be discharged from the bag member 21 to the extent that it can be reused without scraping off the dust adhering to the inner surface of the bag member 21, it is possible to prevent the dust from being rolled up due to the scraping. Instead of using a porous film made of polytetrafluoroethylene, the innermost surface of the bag member 21 may be coated with a material that is good for dust separation.

  A porous film made of polytetrafluoroethylene may be used as the material of the intermediate layer between the outermost layer and the innermost layer of the bag member 21, and a nonwoven fabric may be used as the innermost layer. Since the porous film made of polytetrafluoroethylene is thin, there is a risk that it will be broken when relatively large dust collides with the porous film made of polytetrafluoroethylene. By using a strong nonwoven fabric, it is possible to prevent the porous film made of polytetrafluoroethylene from being broken. Therefore, the porous film made of polytetrafluoroethylene may be the innermost layer or the intermediate layer, and may be used for the inner layer.

  The bag member 21 is bonded to the back side of the mouth plate 22. The bonding portion between the bag member 21 and the mouth plate 22 does not extend over the entire mouth plate 22, and about 10 mm to 15 mm of the outer peripheral portion of the mouth plate 22 is not bonded to the bag member 21 (non-bonding portion 17). The bag member 21 is bonded around the opening of the mouth plate 22. When the mouth plate 22 is attached to the dust collecting part 5 of the vacuum cleaner 1, the mouth plate 22 engages with a hook 29 provided on the clamp 28. When the bag member 21 is adhered to the outer peripheral end of the mouth plate 22, The plate 22 and the hook 29 cannot be engaged with each other, and the bag member 21 may be damaged by the hook 29. For this reason, in this embodiment, the outer peripheral portion of the mouth plate 22 is not bonded to the bag member 21. The part where the mouth plate 22 and the bag member 21 are not bonded requires at least one piece of the mouth plate 22, that is, the piece on the side that engages with the hook 29, but the other piece is bonded to the end of the mouth plate 22. May be.

  When the bag member 21 is unfolded, it has a rectangular shape, and one side and the opposite side of the rectangular shape are overlapped and bonded with an adhesive to form a cylindrical body. In this state, the cylindrical body is open at the top and bottom. Then, the tubular body is folded and folded, and the upper end (upper opening portion) of the tubular body is folded twice and bonded with an adhesive (joining member) to form the folded portion 23. Therefore, the upper end of the bag member 21 is always closed. The number of times of folding may be one time, or three or more times. You may join by metal fittings (joining member), such as a staple of a stapler, instead of an adhesive. On the other hand, the folded portion 24 is formed by folding the lower end (lower opening portion) of the folded cylindrical body twice. Similarly, the number of times of folding may be one time or may be three times or more. After the folding, the folded portion 24 is sandwiched from the outside by the clamp 27 (clamping tool) without being bonded with an adhesive (joining member). Therefore, if the user removes the clamp 27 and unfolds, the lower end of the bag member 21 can be opened. The clamp 27 has a function of a closing member that closes the lower opening portion of the bag member 21.

  The length from the vertical center line (the dashed line in FIG. 4B) that is the center of the opening 26 of the mouth plate 22 to the lower end of the dust bag 20 (the lower length of the dust bag 20) L1 Is smaller by about 10 mm than the length from the upper and lower center line of the opening 26 of the mouth plate 22 to the upper end of the dust bag 20 (upper length of the dust bag 20) L2. That is, there is a relationship of L1 <L2. However, L1≈L2 may be satisfied. The length from the vertical center line of the opening 26 of the mouth plate 22 to the upper end of the mouth plate 22 is substantially equal to the length from the vertical center line of the opening 26 of the mouth plate 22 to the lower end of the mouth plate 22. Therefore, the vertical center of the mouth plate 22 and the vertical center of the opening 26 substantially coincide.

  Thus, by holding the lower end of the dust bag 20 detachably with the clamp 27, the user discharges the dust accumulated in the dust bag 20 from the lower end opening of the dust bag 20. The dust bag 20 can be reused by sandwiching the lower end of the dust bag 20 with the clamp 27 again. Therefore, the waste of the resource of the dust bag 20 can be saved. In addition, since the clamp 27 is provided on a surface other than the back surface (rear surface) of the dust bag 20 that is a surface facing the air intake port of the electric blower 9, the air intake is blocked by the clamp 27 or the flow is disturbed. Can be suppressed. As the usage time increases, fine dust adheres to the bag member 21 and the air permeability of the bag member 21 decreases. Therefore, it is preferable that the dust collection bag 20 be reused about a few times. . Furthermore, since the clamp 27 is provided on a portion other than the back surface (rear surface) of the dust bag 20 which is a surface facing the air intake port of the electric blower 9, the air intake is blocked by the clamp 27 or the flow is disturbed. Can be suppressed.

  Next, FIG. 5 is an external perspective view of the clamp 27 according to the embodiment of the present invention. FIG. 5A shows a perspective view seen from one side of the clamp 27, and FIG. 5B shows a perspective view seen from the other side opposite to the clamp 27. FIG. 6 is an external perspective view of the dust bag 20 according to the embodiment of the invention. FIG. 6 shows a state where the clamp 27 is attached to the dust bag 20, but not clamped.

  The clamp 27 is preferably made of synthetic resin or metal. The clamp 27 includes a rod-like upper arm member 41 and a rod-like lower arm member 42. The lengths of the upper arm member 41 and the lower arm member 42 are longer than the length in the left-right direction of the lower end portion of the dust collection bag 20 (bag member 21). Therefore, the length of the clamp 27 is also longer than the length in the left-right direction of the lower end portion of the dust bag 20 (bag member 21). The widths of the upper arm member 41 and the lower arm member 42 are smaller than the folded width of the lower end portion of the dust bag 20. However, the widths of the upper arm member 41 and the lower arm member 42 may be equal to or larger than the folded width of the lower end portion of the dust bag 20. One end of the upper arm member 41 is linear, and the other end is bent into a substantially L shape. A portion of the upper arm member 41 bent in a substantially L shape is rotatably connected to the other end of the lower arm member 42 (connecting portion 43). A stopper 45 having a substantially U-shaped cross section is rotatably connected to one end of the lower arm member 42 (connecting portion 46). When the upper arm member 41 is closed with respect to the lower arm member 42, the stopper 45 has a function of holding one end of the upper arm member 41 inside the substantially U-shape and maintaining the closed state. Instead of the stopper 44, a rubber band may be used. Further, instead of the stopper 44, an elastic member such as a spring that biases the upper arm member 41 and the lower arm member 42 in a relatively closing direction may be provided in the vicinity of the connecting portion 43.

  A stopper 44 having a substantially U-shaped cross section is joined to an intermediate portion between one end and the other end of the lower arm member 42. As shown in FIG. 6, the stopper 44 has a function of preventing the lower end of the dust bag 20 from slipping. That is, the stopper 44 can prevent the clamp 27 from being displaced or displaced in a state where the lower end portion of the dust collection bag 20 is sandwiched by the clamp 27. Further, the stopper 44 can facilitate positioning for the user when the clamp 27 is attached to the lower end portion of the dust bag 20. In other words, the clamp 27 is attached to the lower end side of the dust collection bag 20 to prevent the clamp 27 from being easily displaced from the lower end portion of the dust collection bag 20, and conversely, the clamp 27 is centered on the dust collection bag 20. It can suppress that the dust collection capacity | capacitance in the dust bag 20 becomes small by attaching to the side. The cross section of the stopper 44 may be substantially L-shaped instead of substantially U-shaped. The stopper 44 does not extend along the lower arm member 42 but may be a partial protrusion. However, the stopper 44 is not an essential configuration and may not be provided. Further, a member such as rubber having a high friction coefficient and elastically deformable is formed on one or both of the upper arm member 41 facing the lower arm member 42 and the lower arm member 42 facing the upper arm member 41. May be. By this member, in a state where the lower end portion of the dust bag 20 is clamped by the clamp 27, the clamp 27 can be prevented from being displaced or displaced. Furthermore, the lower end portion of the dust bag 20 can be reliably closed by the elastic force of the member, and the suction of dust from the lower end of the dust bag 20 can be suppressed.

  As long as the lower end portion of the dust bag 20 is sandwiched across the entire left and right direction as in the clamp 27 of the present embodiment, the number of times the lower end portion of the dust bag 20 is folded may be zero. That is, the opening may be closed by sandwiching the opening with the clamp 27 while the lower end of the dust bag 20 is opened without being folded back. Conversely, if the lower end portion of the dust bag 20 is folded back one or more times, the lower end portion of the dust bag 20 is not sandwiched over the entire left and right direction like the clamp 27, but the lower end portion of the dust bag 20 is A part may be occluded. As long as at least 50% or more of the lower end portion of the dust collection bag 20 or a plurality of places are sandwiched, dust is not sucked out from the lower end opening of the dust collection bag 20. For example, instead of the clamp 27, an eyeball clip, a gem clip, or a turn clip may be used.

  FIG. 7 is a side view showing a state of packing the dust bag 20 according to the embodiment of the present invention. The bag member 21 has an upper portion of the bag member 21 to which the mouth plate 22 is not bonded and a bag member 21 to which the mouth plate 22 is not bonded to the center portion of the bag member 21 to which the mouth plate 22 is bonded. The lower part is folded. In other words, it is folded twice. Preferably, the upper part of the bag member 21 is folded first and the lower part of the bag member 21 is folded later. That is, it is preferable that the lower part of the bag member 21, that is, the clamp 27 is located outside. In this state, it is packed in a box or bag. At the time of use, it is preferable that the bag member 21 is attached to the dust collecting portion 5 in a folded state without forcibly unfolding. However, the dust bag 20 and the clamp 27 may be separated and packed in a box or a bag. In this case, at the time of use, it is preferable that the clamp 27 is attached to the lower end portion of the dust bag 20 and the lower portion of the bag member 21 is folded again and attached to the dust collector 5. Since the lower part of the bag member 21, that is, the clamp 27 is located outside, when the dust bag 20 inhales and expands, the lower part of the bag member 21, that is, the lower part of the bag member 21, The portion where the clamp 27 is disposed will open. Since L1 <L2, that is, the portion that opens first is short, when the dust bag 20 sucks dust and expands, it becomes easy to open. However, in the state where the dust collection bag 20 is inflated in the dust collection portion 5, the upper portion of the bag member 21 opens rearward with respect to the central portion of the bag member 21, and the interior of the upper portion of the bag member 21 is also Although the lower part of the bag member 21 opens rearward with respect to the central part of the bag member 21, the inside of the lower part of the bag member 21 is hardly opened (does not expand). ), Will remain closed. Since the inside of the lower part of the bag member 21 is not opened and remains closed, the clamping portion (folded portion 24) of the clamp 27 is hardly subjected to tension due to expansion. It can be suppressed that the clamp 27 is detached from the dust bag 20 and the dust leaks from the lower end opening of the dust bag 20.

  Next, the dimensional relationship between the inside of the dust collection part 5 of the cleaner body 2 and the dust collection bag 20 will be described with reference to FIG.

  A center line (one-dot broken line in FIG. 3) that is the center in the vertical direction of the inlet 30 of the cleaner body 2 is a center line of the opening 26 of the dust bag 20 (one-dot broken line in FIG. 4B). It almost agrees. On the other hand, the center line of the inflow port 30 (one-dot broken line in FIG. 3) does not coincide with the center line of the rotating shaft of the electric blower 9 (one-dot broken line in FIG. 3). Is located on the upper side. In addition, the air inlet of the electric blower 9 is positioned slightly above the inlet 30 of the cleaner body 2. Therefore, the air flowing in from the inflow port 30 flows slightly upward and is sucked from the intake port of the electric blower 9. The lid 8 forming the upper surface of the dust collecting portion 5 is inclined so as to be positioned on the lower side as it goes from the rear side to the front side. On the other hand, a caster mounting portion 47 for mounting the guide wheel 40 to the bottom surface of the cleaner body 2 protrudes toward the inside of the dust collecting portion 5 at the middle portion in the front-rear direction of the bottom surface of the dust collecting portion 5. Except for the caster mounting portion 47, the bottom surface of the dust collecting portion 5 substantially coincides with the front-rear direction of the cleaner body 2, that is, the horizontal direction. The caster mounting portion 47 is not an essential configuration.

  The height from the bottom of the front of the dust collector 5 to the center line of the inlet 30 (the lower height of the front of the dust collector 5) is H1, and the top of the front of the dust collector 5 from the center of the inlet 30 The height from the bottom of the rear part of the dust collecting part 5 to the center line of the inlet 30 (the lower part of the rear part of the dust collecting part 5) Is the height from the center line of the inlet 30 to the rear upper surface of the dust collector 5 (the upper height of the rear of the dust collector 5) is H4, the height of the front of the dust collector 5 is The height of the rear part of the dust collecting part 5 is indicated by (H3 + H4). Since the bottom surface (lower surface) of the dust collecting unit 5 substantially coincides with the front-rear direction of the cleaner body 2, that is, the horizontal direction, H1≈H3. Since the upper surface of the dust collecting portion 5 is inclined so as to become lower toward the front, H2 <H4. Therefore, (H1 + H2) <(H3 + H4). When the depth in the front-rear direction of the dust collecting unit 5 is W, W <(H1 + H2). That is, the depth in the front-rear direction inside the dust collection unit 5 is smaller than the height inside the dust collection unit 5. Furthermore, the inflow port 30 is formed below the vertical center of the dust collecting unit 5. When the inlet 30 is used as a reference, the upper space of the dust collecting unit 5 is wide and the lower space is narrow. That is, the center line of the inflow port 30 is located on the lower side with respect to the vertical center of the dust collecting unit 5. Therefore, H1 <H2 and H3 <H4.

  As shown in FIG. 3, when the dust collection bag 20 is expanded in the dust collection unit 5, the outer surface of the rear surface (rear surface) of the dust collection bag 20 facing the opening 26 is the surface of the dust collection unit 5. It contacts the front surface of the protective filter 18 that forms the inner surface of the back surface (rear surface). Therefore, the depth of the dust bag 20 in the front-rear direction when the dust bag 20 is inflated is equal to or greater than the depth W of the dust bag 5 in the front-rear direction. The outer surface of the bottom surface (lower surface) of the dust collection bag 20 is in contact with the inner surface of the bottom surface (lower surface) of the dust collection unit 5 while the inside of the lower part of the bag member 21 hardly expands. This is because air easily flows into the central portion of the bag member 21, so that the central portion of the bag member 21 expands first, while air hardly flows into the lower portion of the bag member 21. This is probably because the expansion of the portion prevents the lower portion of the bag member 21 from expanding. On the other hand, the upper portion of the bag member 21 has a large upper space of the dust collecting portion 5, so that the expansion of the upper portion of the bag member 21 is not hindered by the expansion of the central portion of the bag member 21. Can expand. Therefore, when the dust bag 20 is inflated, the height from the bottom surface of the dust bag 20 to the center line of the opening 26 is equal to or larger than the lower heights H1 and H3 of the dust collector 5. Naturally, the lower length L1 of the state in which the dust bag 20 is folded is L1> H1, L1> H3. The clamp 27 comes into contact with a caster mounting portion 47 that forms a part of the bottom surface of the dust collecting portion 5. On the other hand, the outer surface of the upper surface of the dust bag 20 is not in contact with the inner surface of the upper surface of the dust collector 5. That is, even when the dust bag 20 is expanded, the height from the center line of the opening 26 to the upper surface of the dust bag 20 is smaller than the upper heights H2 and H4 of the dust collector 5. In this way, when the inflow port 30 is located below the vertical center of the dust collecting unit 5 and the depth in the front-rear direction in the dust collecting unit 5 is smaller than the vertical height, the dust collecting bag The upper surface of the dust collecting bag 20 is in a stretched state, while the lower surface of the dust collecting bag 20 is in a relaxed state (a state in which the inside of the lower portion of the bag member 21 hardly expands). Since the tension applied to the upper surface of the dust bag 20 is smaller than the tension applied to the upper surface of the dust bag 20, even if the clamp 27 is somewhat loose, the clamp 27 is removed from the dust bag 20, and the dust leaks from the lower end opening of the dust bag 20. Can be suppressed. Note that the outer surface of the upper surface of the dust collection bag 20 may come into contact with the inner surface of the upper surface of the dust collection unit 5 as long as the lower surface of the dust collection bag 20 is in a relaxed state.

  Since the clamp 27 only needs to be attached to the narrower side of the upper and lower spaces of the dust collecting unit 5 with respect to the inlet 30, for example, the upper space of the dust collecting unit 5 is narrower with respect to the inlet 30. When the lower space is wide, the lower end of the dust bag 20 may be always joined with an adhesive or the like, and the upper end of the dust bag 20 may be clamped by the clamp 27.

  Next, another embodiment of the dust bag 20 will be described. FIG. 9 is an external perspective view of a dust bag according to Embodiment 2 of the present invention.

  Similarly to the folded portion 23, the folded portion 24 is folded twice and formed by adhering with an adhesive (joining member). That is, the lower end of the bag member 21 is always closed like the upper end of the bag member 21.

  Then, a cut line 48 is formed (printed) along the left-right direction on the surface of the bag member 21 about several mm above the folded portion 24. In the vicinity (upper side or lower side) of the cut line 48, it is preferable to print a character of “cut line”. A folding line 49 is formed (printed) along the left-right direction on the surface about 20 mm above the cut line 48 of the bag member 21, and further, the surface along the left-right direction is formed about 20 mm above the folding line 49. A folding line 50 is formed (printed). In the vicinity of the fold line 49 and the fold line 50 (upper side or lower side, preferably between the fold line 49 and the fold line 50), it is preferable to print the characters "fold line". The cut line 48, the folding line 49, and the folding line 50 may be recessed by embossing instead of printing. Instead of forming two folding lines 49 and 50, either one or no folding lines may be provided.

  By forming the cut line 48, when the user wants to remove the dust in the dust bag 20 and reuse the dust bag 20, the position to be cut with scissors can be easily recognized. By forming the folding line 49 and the folding line 50, when the user wants to remove the dust in the dust collection bag 20 and reuse the dust collection bag 20, the folding position can be easily changed after cutting with scissors. Can be recognized.

  In this way, the upper and lower ends of the dust bag 20 are joined together and the cut line 48, the folding line 49, and the folding line 50 are formed in the lower part of the dust bag 20. It is possible to freely select a method for discarding the dust bag 20 without reusing it and a method for reusing the dust bag 20 by removing the dust in the dust bag 20.

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner 2 Vacuum cleaner main body 3 Lower main body case 4 Upper main body case 5 Dust collection part 6 Handle 7 Dust removal unit 8 Lid 9 Electric blower 10 Hose connection port part 11 Traveling wheel 12 Hose 12a Connection joint 13 Hand operation pipe 14 Expansion joint Pipe 15 Suction port 16 Switch 17 Non-contact part 18 Protective filter 19 Power cord 20 Dust collection bag 21 Bag member 22 Port plate 23, 24 Folding part 25 Notch part 26 Opening part 27, 28 Clamp 29 Hook 30 Inlet 31 Check valve 32 Exhaust filter 33 Reinforcing part 34, 39 Rib 35, 37 Rotating shaft 36 Holder 38 Locking part 40 Guide wheel 41 Upper arm member 42 Lower arm member 43, 46 Connecting part 44, 45 Stopper 47 Caster mounting part 48 Cut line 49 , 50 folding line

Claims (5)

And a bag member which is attached to the mouth plate the sealing plate having an opening, a portion of the outer surface of the bag member and the bag member is Te state odor inflated is attached to the vacuum cleaner of the vacuum cleaner In the dust bag for a vacuum cleaner that comes into contact with the air intake side in the bag member accommodation chamber,
Upper portion of the bag member is opened, the upper opening of the bag member are joined,
At the lower part of the bag member, a tear line is formed in the left-right direction of the bag member,
The lower opening of the bag member formed by being cut off is closed by a detachable member ,
In a state where the bag member is mounted on a vacuum cleaner, the length from the upper and lower center of the opening in the mouth plate to the bottom surface in the bag member mounting chamber of the vacuum cleaner is from the upper and lower center of the opening in the mouth plate. A dust collection bag for a vacuum cleaner, wherein the dust collection bag is shorter than a length to an upper surface in a bag member mounting chamber of the vacuum cleaner. In the dust-collecting bag for vacuum cleaners of Claim 1,
A dust bag for a vacuum cleaner, wherein a folding line is formed above the cut line . In the dust bag for vacuum cleaners of Claim 2,
The bag member is formed by laminating a plurality of materials,
The dust bag for a vacuum cleaner , wherein the inner layer of the bag member is made of a material containing polytetrafluoroethylene . In the dust bag for vacuum cleaners of Claim 3 ,
The dust bag for a vacuum cleaner, wherein the inner layer of the bag member is a porous film made of a material containing polytetrafluoroethylene . The vacuum cleaner which can mount | wear with the dust bag for vacuum cleaners in any one of Claims 1 thru | or 4 .

Images