CN110338724B - Electric dust collector - Google Patents

Abstract

The invention provides an electric dust collector, which can maintain a simple suction inlet structure, can correspond to various sizes or shapes of wiper heads, and can effectively suck dust no matter what kind of wiper heads. A suction device (12) and an air suction passage (13) extending from the suction device (12) are provided in a main body case (11) that can be placed on a floor surface (1). A suction port (14) that contacts the tip of the suction duct (13) is provided in the portion of the main body case (11) that contacts the floor surface (1). At this time, the side edge (2b1) of the wiper head (2b) of the floor wiper (2) can be inserted into the suction opening (14) along the floor surface (1). The suction port (14) has a notch-shaped recess (15) in the bottom surface (11a) of the main body case (11). The recess (15) has arched portions that are shallower at both ends in the width direction (Y) and that are deeper toward the center in the width direction (Y).

Description

Electric dust collector

Technical Field

The present invention relates to an electric dust collector.

Background

For example, in cleaning floors, there are floor wipers used instead of vacuum cleaners. A floor wiper is a simple floor cleaning tool that mounts a cleaning sheet to a wiper head with a handle, wipes a floor surface with the cleaning sheet mounted on the wiper head by holding the handle and moving the wiper head along the floor surface, and adheres and collects dirt on the floor surface on the cleaning sheet.

Although the cleaning sheet becomes dirty to some extent and the cleaning sheet can be appropriately replaced, the replacement time of the cleaning sheet can be prolonged by removing dust (dirt) adhering to the wiper head (cleaning sheet adhering thereto) by cleaning the floor. The dust removed from the wiper head is collected (thrown) in a dust bag or a dust collector (dust box) as it is.

In addition, manually removing dust adhering to the wiper head after cleaning the floor is a time-consuming and troublesome work, and therefore an electric dust collector has been developed which sucks and removes dust collected by the wiper head (for example, patent document 1).

(Prior art document)

(patent document)

Patent document 1: japanese patent No. 4163554

Disclosure of Invention

(problems to be solved by the invention)

However, since commercially available floor wipers are not particularly standardized, there are currently a large number of floor wipers on the market having wiper heads of various sizes and shapes.

Therefore, in the electric dust collector described in patent document 1, the suction port is made sufficiently larger than the largest wiper head to correspond to various sizes and shapes of wiper heads. However, if the suction port is larger than necessary, an excessively large gap is formed between the suction port and the wiper head, so that air leaks from the gap and the suction force is reduced.

Further, the electric dust collector of patent document 1 is mainly configured to suck dust adhering to the bottom surface of the wiper head, and therefore a support structure for floating the wiper head is provided inside the suction port. As a result, the internal structure of the suction port becomes complicated.

Accordingly, the present invention has a main object to solve the above problems.

(measures taken to solve the problems)

In order to solve the above problems, the present invention provides an electric dust collector in which a suction device and a suction passage extending from the suction device are housed and provided in a main body case that can be placed on a floor surface, a suction port connected to a tip end portion of the suction passage is provided in a contact portion between the main body case and the floor surface, a side edge of a wiper head of a floor wiper is insertable into the suction port along the floor surface, and the suction port has a notch-shaped recess portion in a bottom surface of the main body case, the recess portion having an arch portion that is shallow at both side ends in a width direction and is deep toward a center direction in the width direction.

(Effect of the invention)

According to the present invention, with the above configuration, the suction port can be flexibly adapted to wiper heads of various sizes and shapes while maintaining a simple configuration, and dust (dirt) can be efficiently sucked regardless of the wiper head.

Drawings

Fig. 1 is a perspective view showing a usage state of an electric dust collector of the present embodiment.

Fig. 2 is an overall perspective view of the electric dust collector of fig. 1.

Fig. 3 is a front view of the electric dust collector of fig. 2.

Fig. 4 (a) is a left side view 2 of the electric dust collector of fig. 2, and (b) is a left side view showing a state in which the electric dust collector is installed on a wall.

Fig. 5 is a rear view of the electric dust collector of fig. 2.

Fig. 6 is a perspective view of the electric dust collector of fig. 2 as viewed from the bottom surface side.

Fig. 7 is a perspective view showing a state where the dust container is set in the container housing portion of the main body case.

Fig. 8 shows a perspective view of the receptacle receiving part of the electric dust collector viewed from a direction opposite to that of fig. 7.

Fig. 9 is a perspective view of the dust container.

Fig. 10 is a partial bottom view of the electric dust collector, where (a) shows a state where the wiper head having a general size is inserted into the recess of the suction port in a parallel state, and (b) shows a state where the wiper head having a general size is inserted into the recess of the suction port in an inclined state, and (c) shows a state where the wiper head having a larger size is in contact with the step of the suction port.

Fig. 11 is a partially enlarged sectional view of the suction port as viewed from the side.

Fig. 12 is a partially enlarged sectional view showing the open/close lever when the suction port is viewed from the front.

Fig. 13 is an overall perspective view of the electric dust collector, showing a state where the switch operating tool is mounted.

Fig. 14 is a perspective view of the switch operating tool viewed from the rear side.

Fig. 15 (a) is a front view of the switch operating tool, (b) is a side view of the switch operating tool, and (c) is a rear view of the switch operating tool.

Detailed Description

The following describes the details of the present embodiment with reference to the drawings.

Fig. 1 to 15 are shown for describing the present embodiment.

(example 1)

The structure of the present embodiment will be described below.

For example, as shown in fig. 1, an electric dust collector 3 is provided to assist a floor wiper 2 used in cleaning a floor surface 1 such as a floor or the like to improve usability. The floor wiper 2 is a simple floor cleaning tool that attaches a cleaning sheet 4 to a wiper head 2b with a handle 2a attached thereto and uses it (without using electricity). The floor surface 1 is wiped by a cleaning sheet 4 mounted on the wiper head 2b by moving the wiper head 2b along the floor surface 1 with the handle 2a, and dust or the like on the floor surface 1 is collected by adhesion by adhering the dust or the like on the cleaning sheet 4.

After cleaning the floor, the dust collected by the wiper head 2b is sucked into the electric dust collector 3 and removed. If the cleaning sheet 4 becomes dirty to some extent, the cleaning sheet 4 can be appropriately replaced.

Here, the floor surface 1 is a surface (wiped surface) wiped by the floor wiper 2. As the floor wiper 2, a commercially available product is preferably used, but a dedicated product corresponding to the electric dust collector 3 may be used. Since the commercially available floor wiper 2 is not particularly standardized, floor wipers having wiper heads 2b of various sizes and shapes are circulated in the market, and the electric dust collector 3 needs to be able to flexibly cope with these.

The wiper head 2b is a substantially flat plate-like floor wiping member, which has a rectangular shape in plan view and has a predetermined thickness. The bottom surface of the wiper head 2b is a floor wiping surface, and both sides and corners of the upper surface thereof are provided with sheet holding portions for inserting and holding the corners of the cleaning sheet 4. After the cleaning sheet 4 is wound around the wiper head 2b from the lower side and covers the floor wiping surface, its corner is inserted into a sheet holding portion provided on the upper surface of the wiper head 2b and held. The cleaning sheet 4 is of various types, such as dry and wet, according to the purpose.

The electric dust collector 3 is configured as follows. The directions of the electric dust collector 3 are a depth direction X, a width direction Y, and a height direction Z.

(1) As shown in fig. 2 to 6 (mainly fig. 2), a suction device 12 and an intake passage 13 extending from the suction device 12 are housed and provided in a main body case 11 that can be placed on the floor surface 1. A suction port 14 is provided in a portion of the main body case 11 that contacts the floor surface 1, in contact with a distal end portion of the suction duct 13. Further, the suction opening 14 can be inserted along the floor surface 1 into the side edge 2b1 (fig. 1) of the wiper head 2b of the floor wiper 2. The suction port 14 has a notch-shaped recess 15 (fig. 6) in the bottom surface 11a of the main body case 11. The recess 15 has an arched portion (arched recess) that is shallower at both side ends in the width direction Y and is deeper toward the center in the width direction Y.

Here, the main body case 11 is basically placed (placed) on the floor surface 1 and used, but it is not necessary to be placed on the floor surface 1 and used, and may be placed on a surface (surface to be wiped) wiped by the floor wiper 2, for example, a rack or the like (in this case, the floor surface 1 will be read as a surface to be wiped). The main body case 11 is made of resin or metal. The main body casing 11 may have any shape as long as the suction port 14 having an effective size can be formed, but in the present embodiment, the main body casing 11 is a frame body having a bottom surface 11a, an upper surface 11b, and 4 side surfaces 11c to 11 f.

At this time, the upper surface 11b of the main body case 11 is formed into a similar shape which is substantially the same as or one turn larger than the planar shape of the wiper head 2b, so that it is possible to make the main body case 11 compact and place the floor wiper 2 on the main body case 11 for storage.

The 4 side surfaces 11c to 11f of the main body case 11 have a pair of long side surfaces 11c and 11d having a wide width and a pair of short side surfaces 11e and 11f having a narrow width. The long side surfaces 11c and 11d are the same as or slightly longer than the long sides of the wiper head 2b, and the short side surfaces 11e and 11f are the same as or slightly longer than the short sides of the wiper head 2 b. However, the length of the 4 side surfaces 11c to 11f of the main body case 11 is not limited thereto.

At this time, by providing the 4 side surfaces 11c to 11f with the projecting portions projecting upward from the upper surface 11b by a required amount or by providing the peripheral wall portion 11g continuously or discontinuously, the floor wiper 2 can be housed and held stably in the peripheral wall portion 11 g. In addition, if a tray is detachably provided in the peripheral wall portion 11g, the upper surface 11b of the main body case 11 can be protected by the tray, and the appearance quality of the electric dust collector 3 can be improved. In addition, when the tray becomes dirty, it can be detached from the upper surface 11b of the main body case 11 and cleaned.

The suction device 12 has a fan 12a and a motor 12b that drives the fan 12 a. The fan 12a and the motor 12b can be integrated and combined, but the structure of the suction device 12 is not limited thereto. The suction device 12 is provided in the main body casing 11, and exhaust ports 16 are provided on side surfaces 11c to 11f of the main body casing 11 where the suction device 12 is provided. The exhaust port 16 may be provided on any of the side surfaces 11c to 11f of the main body case 11, but is preferably provided on one of the side surfaces 11e and 11f on the short side (for example, the side surface 11 f).

The suction passage 13 extends substantially in the lateral direction, and has one end side connected to the suction side of the suction device 12 and the other end side (tip side) connected to the suction port 14 of the main body casing 11. The intake passage 13 is provided along the side surfaces 11c to 11f of the main body case 11. In the present embodiment, for example, the first air duct portion 13a is provided along the side surface 11e on the short side (on the side opposite to the suction device 12) and the second air duct portion 13b is provided along the side surface 11c on the long side (on the side where the suction port 14 is provided). The suction passage 13 may have a circular cross section, but when provided in the main body casing 11, a larger passage cross section can be secured while a (longitudinal) rectangular cross section or the like can be used while a larger internal space of the main body casing 11 can be secured. The other end (tip side) of the suction passage 13 may have a bent portion 13c for connecting the suction port 14. In the present embodiment, the curved portion 13c is curved downward toward the suction port 14.

Further, the whole of the air suction passage 13 may be set substantially horizontal except the bent portion 13c, but, for example, by providing an inclined portion inclined downward from the suction port 14 toward the suction device 12 side at least in a part (for example, the first air passage portion 13a), it is possible to prevent the sucked dust from flowing backward toward the suction port 14. The entire intake duct 13 may be formed with a uniform cross section, but for example, by making the cross section of the portion on the side of the suction device 12 (the second air duct portion 13b) larger than the cross section of the portion on the side of the suction port 14 (the first air duct portion 13a), maintenance of the intake duct 13 can be easily performed from the side of the suction device 12.

As shown in fig. 7 to 9, a container housing portion 18 for detachably housing the dust container 17 may be provided in the middle of the air intake duct 13. Also, a lid portion 11h exposing the container housing portion 18 may be provided in the main body case 11, the lid portion 11h being openable and closable. Further, a sealing portion 19 may be provided between the lid portion 11h and the container housing portion 18, and the sealing portion 19 may have a sealing surface 19b on which the sealing member 19a is pressed when the lid portion 11h is closed and a sealing member 19 a.

Here, the dust container 17 may use a dust basket, a dust bag, or the like. The dust basket is a housing made of resin or the like. The dust bag is a bag made of air-permeable paper, nonwoven fabric, or the like as shown in fig. 9.

The container housing 18 has a space sized to house the dust container 17. The container housing portion 18 is disposed inside the main body case 11 so as to be in contact with the suction device 12 in the width direction Y , and is interposed (located) between the suction device 12 and an end portion of the first air passage portion 13a of the air intake passage 13. One side of the container housing portion 18 is provided with an intake port 18a (fig. 8) that contacts the intake side of the suction device 12, and the other side of the container housing portion 18 is provided with a port 18b (fig. 7) that contacts the end of the first air passage portion 13a of the intake passage 13. The mouthpiece 18b may be made with a circular cross-section or the like, for example, in order to match the shape of the inlet portion of the dust bag. In order to make the first air passage portion 13a and the second air passage portion 13b of the air suction passage 13 higher than the suction port 14, it is preferable to provide the air suction passage at substantially the same height as the inlet portion of the dust bag (substantially at the middle height of the main body case 11).

The lid 11h is provided on the upper surface 11b of the main body case 11. For example, the lid 11h is an opening portion provided on the upper surface 11b of the main body case 11, and is attached so as to open in the vertical direction toward the suction device 12 side with a hinge portion or the like as a center. Between the cover 11h and the opening of the main body case 11, a locking portion having a claw portion and a claw engagement portion is provided on the side opposite to the hinge portion. However, the position, structure, opening/closing direction, and the like of the lid 11h are not limited thereto.

The sealing member 19a is provided on one of the opening portion and the lid portion 11h provided on the upper surface 11b of the main body case 11, and the sealing surface 19b is provided on the other of the opening portion and the lid portion 11 h. In the present embodiment, the sealing member 19a is provided to the lid portion 11h, and the sealing surface 19b is provided to the opening portion of the main body case 11.

At this time, the sealing member 19a may be provided at the tip end of a rib 11i in a flange shape or a ring shape protruding from the inner surface side of the lid 11h, and the sealing surface 19b may be provided inside the opening portion of the main body case 11, and may have a stepped surface or the like having the same depth as the length (height) of the rib 11 i. The length of the rib 11i is longer than the thickness of the upper surface 11b of the main body case 11, and may have a length of about 5 mm or more and about 2 cm or less.

In this way, by providing the container housing section 18 in the middle of the air intake duct 13 and housing the dust container 17 in the container housing section 18 in a detachable manner, the dust sucked into the main body case 11 from the air intake duct 13 is left in the dust container 17, and when the dust container 17 becomes full of dust, the lid section 11h of the main body case 11 is opened to remove the dust container 17 from the container housing section 18, so that the dust can be discarded without contaminating hands.

At this time, since the sealing portion 19 having the sealing member 19a and the sealing surface 19b to which the sealing member 19a is pressure-bonded when the lid portion 11h is closed is provided between the lid portion 11h and the container housing portion 18, the sealing degree of the container housing portion 18 can be improved by the sealing portion 19 and the decrease in the suction force can be prevented.

Further, by providing the annular rib 11i on the lid 11h, providing the stepped sealing surface 19b on the inner side of the opening portion of the main body case 11, and providing the sealing portion 19 at a position deeper than the upper surface 11b of the main body case 11, the rigidity of the lid 11h can be improved and the sealing performance by the sealing portion 19 can be further improved.

The portion of main body case 11 in contact with floor surface 1, where suction port 14 is provided, is around the lower edge of side surfaces 11c to 11f of main body case 11.

The suction port 14 is a portion for sucking dust collected by the floor wiper 2. The suction opening 14 may be of any shape or size, however, the suction opening 14 is preferably formed in such a manner as to have a moderate size, shape or depth (toward the inside) when the side edge 2b1 of the wiper head 2b is inserted along the floor surface 1.

For example, the suction port 14 preferably has a width dimension substantially the same as or slightly longer than the side edge 2b1 on the long side of the wiper head 2b, a height dimension substantially the same as or slightly higher than the thickness (the largest portion of the side edge 2b1) of the wiper head 2b, and a slit-like structure extending in a long and narrow manner in the lateral direction. The suction port 14 is formed so that the side edge 2b1 on the long side of the wiper head 2b can be inserted to a desired depth. Therefore, in the present embodiment, the suction port 14 is provided along the lower side portion of one of the side surfaces 11c and 11d (the side surface 11c in the present embodiment) on the long side of the main body casing 11.

In this case, from the viewpoint of enhancing the suction force (suction force), it is preferable that the suction port 14 has a size just before the wiper head 2b enters and a gap between the suction port 14 and the wiper head 2b is further reduced. However, as described above, the commercially available floor wiper 2 is not particularly standardized, and the currently commercially available floor wiper 2 has wiper heads 2b of various sizes and shapes.

Therefore, in order to allow the suction port 14 to be used for a wiper head 2b having substantially the entire size on the market, the suction port 14 needs to have a size matching the wiper head 2b having the largest size on the market. In addition, in consideration of the size requirement and the like, when it is difficult to match the wiper head 2b of the largest size, the wiper head 2b of the largest size is considered to be matched with the largest size among the wiper heads 2b in the expected use.

However, when the suction port 14 is formed to match the large-sized wiper head 2b, a gap is formed between the suction port 14 and the small-sized wiper head 2b when the small-sized wiper head 2b is used, and air leaks from the gap to lower the suction force.

Therefore, first, the suction port 14 is set to have a height dimension at the inlet portion thereof substantially equal to or slightly higher than the wiper head 2b having the thickest thickness. The inlet 14 has a width dimension substantially equal to or slightly longer than the widest wiper head 2b at the inlet. The suction port 14 is set to have a depth to such an extent that the floor wiper 2 cannot enter the handle 2a, that is, a depth (approximately 5 mm to 5 to 6 cm) equal to or less than half the width of the short side of the wiper head 2b having the narrowest width of the short side.

As shown in fig. 10, a notch-shaped recess 15 is provided inside the suction port 14 so as to expose the floor surface 1, and the notch-shaped recess 15 is formed in an arch shape. The notch-shaped recess 15 is formed in almost the entire area excluding both ends of the suction port 14.

The arcuate recesses 15 are formed substantially bilaterally symmetrically. The arch-shaped recess 15 is mainly formed by a curved portion, and the inner side (depth side) or the central portion of the arch-shaped recess 15 may have a linear portion or the like of a predetermined length so that the depth of the arch-shaped recess 15 is not too deep.

At this time, the arcuate recess 15 is formed into a shape matching the wiper head 2b of various sizes and shapes. For example, the shape of the arcuate recess 15 can be set as follows.

First, commercially available floor wipers 2 are classified into general-size wiper heads 2b and large-size (large-size) wiper heads 2b larger than them. The wiper heads 2b of the general size are classified into most wiper heads 2b such as a representative floor wiper among the floor wipers 2 or an average size floor wiper. The large-sized wiper head 2b is classified as a few floor wipers outside the range of the general-sized wiper head 2 b.

For example, the positions of both end portions of the side edge 2b1 of the wiper head 2b of a general size when the wiper head 2b of a general size is inserted in parallel with the center of the suction port 14 are determined for each wiper head 2b (having various sizes and shapes), and the positions are aligned in order of narrowing the width gradually from the near side toward the deep side to determine a line such as a smoothly connected curve, thereby forming the arcuate recess 15. Accordingly, the recess 15 can be formed in a shape that matches the wiper head 2b of a general size. However, the setting method of the arcuate recess 15 is not limited to this.

(2) As shown in fig. 6, a sealing material 21 that can be closely adhered (closely attached) to the floor surface 1 along the edge of the (arched) recess 15 may be provided on the bottom surface 11a of the main body case 11.

Here, the sealing material 21 may be a rubber-based or soft resin-based material, a foamed polyurethane-based or sponge-based material, a nonwoven fabric-based material, or the like. The sealing material 21 does not need to have a tight adhesion, but is preferably a material that can ensure a suction performance required for the electric dust collector 3. The sealing material 21 may be provided by attaching a material in the form of an adhesive tape. The sealing material 21 may be provided to extend across the edge portion of the recess 15 toward the edge portion of the suction port 14 or the edge portion of the main body case 11. In order to make the bottom surface 11a uniform in height, a similar sealing material 21 is provided at a corner portion or the like on the back surface (side surface 11d) side of the bottom surface 11a of the main body case 11.

(3) As shown in fig. 10(c), both sides of the recess 15 of the suction port 14 may have a step 22 that is a recess shallower than the recess 15 with respect to the side surface 11c of the main body casing 11.

Here, the step portion 22 is provided outside the recess 15 (or the inlet portion of the suction port 14) so as to fit a small number of large wiper heads 2b outside the range of the wiper heads 2b of the above-described general size. The step portion 22 is preferably formed to have a width or height that matches the large wiper head 2b (among them, a commercially available large size, a maximum size expected to be used, and the like).

For example, the step portion 22 is sized to have both ends and an upper edge portion of the side edge 2b1 of the large wiper head 2b inserted in parallel toward the suction port 14 while being aligned with each other, thereby ensuring sealing performance. The step portions 22 are provided on both side portions of the recess 15, and may be provided in an upper portion of the recess 15 as necessary. The step portion 22 has a surface parallel to the side surface 11c of the main body case 11.

The depth of the step portion 22 with respect to the side surface 11c of the main body case 11 is set to a relatively shallow dimension of about 5 mm to 1 cm from the viewpoint that a sufficient suction force can be obtained based on the sealing property even when the large wiper head 2b is positioned at the inlet portion of the suction port 14. If necessary, a guide inclined surface 23 or the like gradually decreasing in width or height toward the step portion 22 may be provided outside the step portion 22 in order to guide the large wiper head 2b to the step portion 22.

(4) As shown in fig. 11 (and fig. 6), the suction port 14 may have an inclined surface which forms a downward slope (inclination) from the upper portion toward the deeper side.

Here, for example, as shown in fig. 10(a), when both ends of the side edge 2b1 of the wiper head 2b inserted in parallel toward the suction port 14 with the center aligned are substantially in contact with the 2 point of the arcuate recess 15, the inclined surface 24 is preferably configured such that the upper edge portion of the side edge 2b1 of the wiper head 2b is brought into contact or substantially in contact with the upper portion of the suction port 14 as shown in fig. 11.

Thus, for example, the positions of the upper edge portions of the side edges 2b1 of the wiper head 2b when both ends of the side edges 2b1 of the wiper head 2b are substantially in contact with the 2 points of the arcuate recesses 15 as described above are determined for the wiper heads 2b having various sizes and shapes, respectively, and a surface of a shape connecting these positions is determined. When the surface has irregularities or steps, the surface is adjusted to have a smooth shape as much as possible, and the inclined surface 24 is formed. Thus, the inclined surface 24 has an even (moderate) height for wiper heads 2b having various sizes and shapes. However, the shape of the upper surface of the suction port 14 is not limited to this. For example, in contrast to the above, the shape of the upper surface of the suction port 14 may be set first, and then the shape of the recess 15 of the bottom surface 11a of the main body casing 11 may be set.

The inclined surface 24 may be, for example, a flat surface, a convex curved surface protruding downward, a concave curved surface recessed upward, or a combination thereof. In the present embodiment, the inclined surface 24 of the upper surface of the suction port 14 is mostly a flat surface having a substantially constant inclination angle, being smooth, and decreasing in depth. The inclined surface 24 may be configured to maintain the above-described unevenness or step.

In order to improve adhesion to the wiper head 2b, an elastically deformable sealing surface material such as urethane foam, rubber, or sponge may be bonded to the upper portion of the suction port 14.

(5) As shown in fig. 11 or fig. 12 (also see fig. 3, fig. 6, and the like), a pair of open/close levers 26 may be provided, the pair of open/close levers 26 extending from the upper portion of the suction port 14 toward the floor surface 1 and being located on both sides of the connecting port portion 25 between the suction port 14 and the tip end portion of the suction duct 13.

Here, the switch lever 26 is opened when the side edge 2b1 on the long side of the wiper head 2b is inserted into the suction port 14, and is closed when the wiper head 2b is detached from the suction port 14. Accordingly, the electric dust collector 3 can be activated only in a short time when the wiper head 2b is inserted into the suction port 14.

The switch lever 26 is a member for pressing a switch 27 provided inside the main body case 11. The open/close lever 26 is disposed substantially along the side surface 11c of the main body case 11, and is formed so as to be supported rotatably by a horizontal shaft 26a parallel to the side surface 11c at both ends of a connecting member 26b on the upper side of the suction port 14 in the main body case 11 or to extend substantially downward from the vicinity thereof. The coupling member 26b is provided with a projection 26c for pressing the switch 27. The switch lever 26 may be returned to the standby position (position before the switch 27 is operated) by the restoring force of a return spring provided in the switch 27, or a return spring dedicated to the switch lever 26 may be separately provided.

The switch lever 26 is preferably just short of the length of the floor surface 1. Thus, for example, the open/close lever 26 is shorter than the height of the suction port 14 and longer than half the height of the suction port 14.

The interface 25 between the suction port 14 and the distal end of the air intake duct 13 serves as an inlet for sucking dust from the suction port 14 into the air intake duct 13, and in the present embodiment, serves as the distal end of the bent portion 13 c.

The both sides of the interface 25 are positions close to the interface 25 while avoiding the front surface of the interface 25. The pair of switch levers 26 are disposed one on each side of the interface portion 25.

The switch lever 26 may be any shape member, but preferably at least the lower side portion where the wiper head 2b meets is a round bar shape. In the present embodiment, each switch lever 26 has a round bar-shaped portion extending substantially perpendicularly from the suction port 14 toward the bottom surface 11a of the main body casing 11. Further, as necessary, a branch portion or the like extending toward the suction port 14 may be suitably provided in each switch lever 26.

As shown in fig. 5 (fig. 8), a power switch 28 may be provided in addition to the switch 27 in the main body case 11. The power switch 28 is a main power supply for enabling use of the start switch 27 only when turned on. However, the starting switch 27 may not be provided, and only the power switch 28 may be provided. In the present embodiment, the power switch 28 is provided on the side surface 11d (rear surface) on the long side opposite to the suction port 14 of the main body case 11. At this time, the concave portion 29 extending over almost the entire width in the width direction Y is provided in the long side surface 11d, the power switch 28, the power cord 31, the winding portion 32 of the power cord 31, and the like are provided in the concave portion 29, and the power cord 31 is accommodated in the concave portion 29, whereby the electric dust collector 3 can be appropriately brought into close contact with the wall surface 33 of the room (or the wall) as shown in fig. 4 (b).

(6) As shown in fig. 10, the connecting port 25 may be provided at the widthwise center of the suction port 14. The pair of open/close levers 26 may be provided at positions that divide the suction port 14 into three (three) parts in the width direction Y.

Here, the position of trisection is preferably an accurate arrangement of trisection points, but it is not necessary to have very accurate trisection points, and it is sufficient if the positions of trisection are substantially equal. The pair of switch levers 26 are preferably provided at equal distances from the center or both ends of the width of the suction port 14, but may be provided at different distances.

(7) As shown in fig. 13 to 15, the side surface 11c of the main body case 11 may be provided with a switch operating tool 41 that is detachably attached to the switch lever 26 operated from the outside of the suction port 14.

Here, the switch operating tool 41 may be a resin product, a metal product, or the like. The switch operation tool 41 includes: a detachable portion 42 detachable from a side surface 11c of the main body casing 11 where the suction port 14 is provided; and an operating portion 43 movably mounted with respect to the detaching portion 42 and externally operating the switch lever 26.

As shown in fig. 14 (fig. 15), the detachable portion 42 integrally has a flat attachment surface 42a along the side surface 11c of the main body case 11, and has a first engaging portion 42b at an upper edge portion of the attachment surface 42a, which is engageable from above a flange-shaped peripheral wall portion 11g provided at an upper portion of the side surface 11c of the main body case 11. The mounting surface 42a is formed to have a width substantially equal to or wider than the interval between the pair of switch levers 26, and the first engaging portion 42b extends continuously over the entire width of the mounting surface 42a, but a plurality of first engaging portions 42b may be provided in a discontinuous state in the width direction Y of the mounting surface 42 a.

The lower or lower edge portion of the mounting surface 42a has a second engaging portion 42c, and the second engaging portion 42c is mounted laterally from the outside with respect to the upper edge portion of the suction port 14 and is engageable from below. The second engaging portion 42c is provided discontinuously in the width direction Y of the mounting surface 42a avoiding the pair of switch levers 26. In the present embodiment, 4 (two pairs) of the second engaging portions 42c are provided so as to sandwich both sides of the pair of switch levers 26.

The operating portion 43 has a space 44 of a space (stroke) required for the push switch lever 26 to operate, and at least a lower portion thereof has a movable portion 43a spaced from (an outer surface of) the mounting surface 42 a. The movable portion 43a and the upper edge portion of the mounting surface 42a are rotatably coupled by a hinge portion 45 having a hinge axis extending in the width direction Y.

The movable portion 43a has an operation piece 43b at a lower portion or a lower edge portion thereof for directly pressing the pair of switch levers 26. The operating piece 43b is located below the second engaging portion 42c and extends laterally toward the switch lever 26 (approximately to the extent of the switch lever 26). The movable portion 43a may have, for example, a curved shape or a curved surface protruding outward in order to secure or form the above-described space 44 with the mounting surface 42 a.

In this case, the movable portion 43a is set to a curved shape. The curved portion 43c of the movable portion 43a is provided at a substantially central portion in the height direction or above, the space 44 is formed below the curved portion 43c, and the space 44 is maintained by the restoring force of a return spring provided to the switch 27 (operated by the switch lever 26) or a return spring provided to the switch lever 26. In order to easily press the movable portion 43a from the outside, a protrusion such as a rib may be appropriately provided on the outer surface of the movable portion 43 a.

The action of this example will be described below.

The floor is cleaned using the floor wiper 2. The floor wiper 2 moves the wiper head 2b along the floor surface 1 by the grip handle 2a, whereby the floor surface 1 can be wiped with a cleaning sheet attached to the wiper head 2b, and dust on the floor surface 1 is attached to the cleaning sheet 4 to collect the dust.

After the floor cleaning, dust is collected on the cleaning sheet 4 at the portion of the side edge 2b1 of the wiper head 2b, and the like, and dust that does not adhere to the cleaning sheet 4 is also collected around the side edge 2b1 of the wiper head 2 b. The floor cleaning can be finished by throwing away the dust adhering to the side edge 2b1 of the cleaning sheet 4 and the dust concentrated on the periphery of the side edge 2b1 of the wiper head 2 b. The cleaning sheet 4 can be appropriately replaced if dirty to some extent, and the exchange period can be appropriately prolonged by removing the attached dust.

At this time, since dust adheres to the side edge 2b1 of the wiper head 2b more than the floor wiping surface (bottom surface) of the wiper head 2b, the dust attached in a concentrated manner on (the portion of) the side edge 2b1 of the wiper head 2b (the cleaning sheet 4 mounted thereon) is removed and thrown away by a manual operation after floor cleaning, but the operation dirties hands and is troublesome.

Therefore, in the present embodiment, by providing the electric dust collector 3 adapted to be used in conjunction with the floor wiper 2, the operation of removing and throwing away the dust adhering to the floor wiper 2 can be easily and reliably performed.

< effect > according to the electric dust collector 3 of the present embodiment, the following effect can be obtained.

(effect 1) since the suction port 14 has the notch-shaped recess 15 on the bottom surface 11a of the main body casing 11, the suction port 14 is continuous on the floor surface 1 from the outside to the inside of the suction port 14 in this state, and therefore the wiper head 2b inserted into the suction port 14 or the dust attached to the side edge 2b1 of the wiper head 2b is not caught or stuck on the bottom surface 11a of the main body casing 11, and the wiper head 2b or the dust can be smoothly guided to the deep side of the suction port 14. Accordingly, the remaining of dust on the suction port 14 can be eliminated, and the operational feeling of the electric dust collector 3 can be improved.

Further, since dust adheres to the side edge 2b1 of the wiper head 2b more than the floor wiping surface (bottom surface) of the wiper head 2b, dust adhering to (a portion of) the side edge 2b1 of the wiper head 2b (the cleaning sheet 4 mounted thereon) is sucked in to sufficiently reuse the cleaning sheet 4.

The concave portion 15 is formed in an arch shape that is shallow at both side ends in the width direction Y and is deeper toward the center in the width direction Y. Accordingly, as shown in fig. 10(a), both ends of the side edge 2b1 of the wiper head 2b inserted into the suction port 14 contact the concave portion 15 at 2 points, and the portion between 2 points inside the suction port 14 and the wiper head 2b is sealed or the sealing property is improved, so that a strong suction force can be stably generated regardless of the size or shape of the wiper head 2 b. Therefore, dust can be effectively sucked by the wiper head 2b widely corresponding to various sizes or shapes on the market.

Further, since the space sealed inside the suction port 14 is reduced by the contact of both ends of the side edge 2b1 of the wiper head 2b with the concave portion 15 at point 2, as shown in fig. 10(b), a strong suction force can be stably generated regardless of the insertion position or the insertion angle of the wiper head 2b with respect to the suction port 14. Therefore, in what form the wiper head 2b is inserted at the suction port 14, the dust adhering to the side edge 2b1 of the wiper head 2b can be sucked without hindrance, so that there is no need to carefully insert the wiper head 2b into the suction port 14, and the usability of the electric dust collector 3 can be improved.

As described above, although the suction port 14 has a simple shape and structure, it can accommodate the wiper heads 2b of various sizes and shapes, and moreover, dust can be efficiently sucked by any kind of wiper head 2 b.

(effect 2) the sealing material 21 capable of being in close contact with the floor surface 1 along the edge of the (arched) concave portion 15 may be mounted on the bottom surface 11a of the main body case 11. Accordingly, high adhesion is ensured between the floor surface 1 and the edge of the (arched) concave portion 15, and the sealing performance inside the suction port 14 can be improved.

Further, by attaching the sealing member 21 along the edge of the arcuate recess 15, the adhesion to the floor surface 1 and the sealing performance inside the suction port 14 can be more effectively improved by using a smaller amount of the sealing member 21.

As described above, when the sealing performance inside the suction port 14 is improved, the degree of vacuum generated inside the suction port 14 when the suction device 12 is driven is increased, and the suction force (suction force) can be improved without increasing the capacity of the motor 12b of the suction device 12. Therefore, even dust such as sand which is not easily absorbed by a general vacuum cleaner can be strongly absorbed. Further, since the attraction force is increased without increasing the capacity of the motor 12b, the component cost or the running cost can be reduced.

(effect 3) the suction port 14 may have concave step portions 22 shallower than the concave portion 15 with respect to the side surface 11c of the main body casing 11 on both sides of the concave portion 15. Accordingly, even if there is a large (large) wiper head 2b or the like into which the recess 15 cannot be formed in conformity with the wiper head 2b of a general size, dust can be sucked into the suction port 14 by suction. Therefore, the floor wiper 2 having the wiper head 2b larger than the general structure can be handled, and the handling capability can be improved.

Further, since the recess 15 and the step portion 22 are provided separately according to the size of the wiper head 2b, the recess 15 can be provided most effectively for the wiper head 2b of a general size, and the suction force in the recess 15 can be further increased.

(effect 4) an inclined surface 24 inclined downward toward the depth side may be provided at the upper portion of the suction port 14. Accordingly, the volume of the internal space of suction port 14 is set smaller, and the internal space of suction port 14 can be narrowed toward the depth side, so that the suction force on the depth side can be increased.

In particular, as shown in fig. 11, the upper side edge of the side edge 2b1 of the wiper head 2b inserted into the suction port 14 contacts the inclined surface 24, and the portion deeper than the portion of the suction port 14 where the wiper head 2b contacts is sealed or sealed more highly against the wiper head 2b, and therefore, a strong suction force can be stably generated.

(effect 5) a pair of switch levers 26 may be provided at the suction port 14, and the pair of switch levers 26 may be extended from the upper edge of the suction port 14 toward the floor surface 1, and located on both sides of the interface portion 25 (the inlet port of the dust intake passage 13) between the suction port 14 and the tip end portion of the suction passage 13.

Accordingly, since the switch lever 26 is disposed at both side positions thereof so as to avoid the front surface of the interface portion 25 (inlet port), the switch lever 26 does not become an obstacle to the suction of dust into the interface portion 25 (inlet port).

In the case of a member having a length such as the switch lever 26, although the switch lever 26 is more likely to cause dust jamming or clogging than a small projecting operation portion such as a switch knob, the switch lever 26 is provided on both sides of the interface portion 25 (inlet port), and therefore the dust around side of the switch lever 26 can be effectively sucked into the interface portion 25 (inlet port), and therefore the dust can be prevented from jamming or clogging by the switch lever 26.

In this case, for example, the switch lever 26 is formed in a circular rod shape, so that it is possible to prevent dust or the like from being caught or caught by the switch lever 26, and it is possible to stably press the switch lever 26 regardless of the angle at which the wiper head 2b contacts the switch lever 26, so that it is possible to improve the operational stability and the usability of the electric dust collector 3, compared to the case where the switch lever 26 is formed in another shape.

(effect 6) the connecting port 25 (inlet port) may be provided at the widthwise central portion of the suction port 14, and the pair of open/close levers 26 may be provided separately at positions that divide the suction port 14 into 3 in the width direction Y. Accordingly, as shown in fig. 10(b), even when the wiper head 2b is inserted obliquely into the suction port 14, the suction device 12 can be operated accurately by the wiper head 2b only contacting (touching) any one of the switch levers 26, and an operation error can be eliminated.

In addition, when the wiper head 2b is inserted obliquely to the suction port 14, the suction device 12 is operated (activated) by the switch lever 26 with which the wiper head 2b is in contact at the tip, so that the reaction of the electric dust collector 3 becomes faster than that in the case where only 1 switch lever 26 is provided, and the usability of the electric dust collector 3 can be improved.

At this time, by separately providing the pair of switch levers 26 at positions dividing the suction port 14 into 3 in the width direction Y, the suction device 12 can be operated earlier than the pair of switch levers 26 provided adjacent to each other with a narrow gap when the wiper head 2b is inserted obliquely.

In addition, when the wiper head 2b is (extremely) obliquely inserted into the suction port 14, there is a possibility that almost half of the dust collected by the wiper head 2b is not sucked depending on the situation, but in this case, the angle of the wiper head 2b is changed and the opposite side portion is inserted, and the remaining half of the dust can be sucked, so that the whole dust can be collected by 2 operations and completed with the minimum time.

(effect 7) the opening and closing operation tool 41 for operating the opening and closing lever 26 from the outside of the suction port 14 can be attached to and detached from the side surface 11c of the housing. Accordingly, even if there is a cleaning tool (e.g., a broom) other than the floor wiper 2 that cannot be inserted into the suction port 14, the opening/closing operation tool 41 is attached to the side surface 11c of the housing, and the opening/closing lever 2 is pressed from the outside of the suction port 14 via the opening/closing operation tool 41, so that dust collected by the cleaning tool other than the floor wiper 2 can be sucked from the suction port 14 by using the cleaning tool. In this way, the electric dust collector 3 can be operated by a cleaning tool other than the floor wiper 2, and the use of the electric dust collector 3 can be expanded.

Although the embodiments of the present invention have been described in detail with reference to the drawings, the embodiments are merely examples of the present invention. Therefore, the present invention is not limited to the configuration of the above embodiment, and design changes and the like that do not depart from the scope of the invention are included in the scope of the present invention. For example, when a plurality of structures are included in each embodiment, any combination of these structures is also included, unless otherwise specified. In addition, when a plurality of embodiments and modifications are disclosed as configurations of the present invention in the embodiments, the configurations may be arranged in a range of these configurations even if not specifically described. The structure shown in the drawings is also included, unless otherwise specified. Further, when the term "etc" is present, it is used in an inclusive sense. In addition, when terms such as "substantially", "about", "degree", and the like are present, they are used in a sense of including the range and precision accepted as common sense.

(description of reference numerals)

1: a floor surface; 2: a floor wiper; 2 b: a wiper head; 2b 1: a side edge;

11: a main body case; 11 a: a bottom surface; 11 c: a side surface; 12: a suction device; 13: an air suction passage;

14: a suction inlet; 15: a recess; 21: a sealing material; 22: a step portion; 24: an inclined surface; 26: a switch lever;

41: a switch operating tool; y: the width direction.

Claims (12)

1. An electric dust collector is characterized in that,

a suction device and a suction passage extending from the suction device are housed and provided in the interior of a main body case that can be placed on a floor surface,

a suction port connected to a tip end portion of the suction passage is provided at a contact portion between the main body casing and the floor surface,

the suction opening is formed so that a side edge of a wiper head of the floor wiper can be inserted along the floor surface,

the suction port has a notch-shaped recess on the bottom surface of the main body case,

the recess has an arched portion whose both ends in the width direction are shallower and which is deeper toward the center in the width direction.

2. The electric dust collector of claim 1,

and a sealing material which can be tightly adhered to the floor surface along the edge of the arched concave part is arranged on the bottom surface of the main body shell.

3. The electric dust collector of claim 1,

the suction port has recessed step portions on both sides of the recess, and the step portions are shallower than the recess with respect to the side surface of the main body case.

4. The electric dust collector according to claim 2,

the suction port has recessed step portions on both sides of the recess, and the step portions are shallower than the recess with respect to the side surface of the main body case.

5. The electric dust collector of claim 1,

the upper part of the suction inlet is provided with an inclined surface which is inclined downwards towards the inner side.

6. The electric dust collector according to claim 2,

the upper part of the suction inlet is provided with an inclined surface which is inclined downwards towards the inner side.

7. The electric dust collector according to claim 3,

the upper part of the suction inlet is provided with an inclined surface which is inclined downwards towards the inner side.

8. The electric dust collector according to claim 4,

the upper part of the suction inlet is provided with an inclined surface which is inclined downwards towards the inner side.

9. The electric dust collector according to any one of claims 1 to 8,

a pair of switch levers extending from an upper portion of the suction port toward the floor surface and located on both sides of an interface portion between the suction port and a tip end portion of the suction passage are provided.

10. The electric dust collector of claim 9,

the mouthpiece is provided at a widthwise central portion of the suction port, and the pair of switch levers are provided at positions dividing the suction port into three in a width direction.

11. The electric dust collector according to any one of claims 1 to 8,

the side surface of the main body housing is provided with a switch operating tool which can be detachably used for operating a switch lever from the outer side of the suction port.

12. The electric dust collector of claim 10,

the side surface of the main body housing is provided with a switch operating tool which can be detachably used for operating a switch lever from the outer side of the suction port.

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