CN107625485B - Electric vacuum cleaner - Google Patents

Abstract

The invention provides an electric dust collector with a structure which is easy to construct a cooling structure of a power line of a winding roll and has good operability. An electric vacuum cleaner (cleaner main body (2)) of the present invention comprises a main body case which houses: an electric fan generating an attractive force; and a take-up reel (16) for winding and housing a power cord (17), wherein a discharge port (51) for discharging air from the electric blower and an inlet/outlet (54) for the power cord (17) are integrally formed in an integrally formed portion (50) of the main body case.

Description

Electric vacuum cleaner

Technical Field

The present invention relates to an electric vacuum cleaner.

Background

There is known in the art an electric vacuum cleaner including: a dust box which is a bottomed cylinder having an upper opening and has a hose connection port on a side surface; and a main body unit detachably attached to an opening side of the dust box and incorporating an electric blower generating a suction force (see, for example, patent document 1).

In this electric vacuum cleaner, dust sucked in together with air by a driven electric fan via a hose connection port is collected in a dust box. Further, the exhaust air from the electric blower is discharged from an exhaust port provided in a main body case constituting the main body unit.

The dust collecting box type dust collector can ensure large capacity of the dust collecting part. Therefore, the dust box type vacuum cleaner is suitable for use as a so-called commercial vacuum cleaner for cleaning buildings having a large cleaning area at a time.

The length of the power cord of the commercial cleaner is greater than that of the household cleaner, so that the cleaning can be performed even if the cleaning area is large. In addition, unlike a household cleaner, a commercial cleaner often does not have a take-up reel on which a power cord is wound.

Therefore, the preparation work when using the commercial vacuum cleaner and the removal work of the commercial vacuum cleaner after use are extremely complicated in the arrangement of the long power cord. Therefore, in the commercial vacuum cleaner, it is also desired to provide a cord reel in the main unit, which enables the power cord to be drawn out from the cleaner main body and to be received in the cleaner main body.

Documents of the prior art

Patent document

Patent document 1: japanese laid-open patent publication No. 2002-330902

Disclosure of Invention

Problems to be solved by the invention

In a commercial vacuum cleaner having such a cord reel provided in a main unit, an inlet and an outlet of a power cord are provided in a main body case.

However, many holes, recesses, and the like are formed in the main body case in addition to the inlet and outlet of the power cord. Therefore, it is desirable to realize a vacuum cleaner having a structure that is easy for a user to recognize the entrance and exit of the power cord with respect to the other holes and the recessed portions when the power cord is pulled out from the vacuum cleaner main body and has good operability.

In addition, when the vacuum cleaner is used with a long power cord left on the winding reel, it is necessary to consider a cooling structure of the power cord that generates heat in the winding reel.

Accordingly, an object of the present invention is to provide an electric vacuum cleaner having a structure in which a cooling structure for a power cord of a cord reel is easily constructed and which is excellent in operability.

Means for solving the problems

An electric vacuum cleaner according to the present invention for solving the above problems is characterized in that: including the main part shell, this main part shell has been accomodate: an electric fan generating an attractive force; and a take-up reel for taking up and storing a power cord, wherein an outlet for exhaust from the electric blower and an inlet/outlet for the power cord are formed in an integrally formed portion of the main body case.

Effects of the invention

According to the present invention, it is possible to provide an electric vacuum cleaner having a structure in which a cooling structure for a power cord of a cord reel is easily constructed and which is excellent in operability.

Drawings

Fig. 1 is an external perspective view showing an entire electric vacuum cleaner according to an embodiment of the present invention.

Fig. 2 is an exploded perspective view of a cleaner body of the electric cleaner of fig. 1.

Figure 3 is an upper view of the cleaner body of figure 2.

Figure 4 is a partial sectional view of the cleaner body at section IV-IV of figure 3.

Fig. 5 is a perspective view of the wire winding button in the present embodiment.

Fig. 6 is a plan view of the wire winding button showing the shape of the pressing surface of the wire winding button.

Fig. 7 is a partial perspective view of the cleaner body of fig. 2 viewed from obliquely above behind.

Fig. 8 is a partial perspective view of the cleaner body showing a section VIII-VIII of fig. 4.

Detailed Description

Embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited to the following, and can be implemented with appropriate modifications within the scope of the present invention.

The electric vacuum cleaner of the present embodiment is mainly characterized in that the outlet for the exhaust air from the electric blower and the inlet/outlet for the power cord are formed integrally in the integrally formed portion of the main body case.

The following describes the overall structure of the electric vacuum cleaner, and the above-described features will be described in further detail. In the following description, the directions of the electric vacuum cleaner are based on the directions of the vacuum cleaner body 2 of the electric vacuum cleaner 1 of fig. 1 (the directions of arrows in fig. 1).

< integral Structure of electric vacuum Cleaner >

Fig. 1 is an external perspective view showing the entire electric vacuum cleaner 1 according to the present embodiment.

The electric vacuum cleaner 1 of the present embodiment is generally called a dust box type or a canister type.

As shown in fig. 1, the electric vacuum cleaner 1 includes: a cleaner body 2, a hose 3, an operation pipe 4, an extension pipe 5, a suction member 6, a first handle 31, a second handle 32, a third handle 33, and the like.

One end of the hose 3 is connected to the cleaner body 2, and the other end is connected to one end of the operation pipe 4. The operation tube 4 includes a grip (grip)4a having a hand-operated switch or the like. The extension pipe 5 is formed to be extendable and retractable by an outer pipe 5a and an inner pipe 5 b.

Fig. 2 is a partially exploded perspective view of the cleaner body 2 of the electric cleaner 1 of fig. 1.

As shown in fig. 2, the cleaner body 2 includes: a wheel base part 7, a dust box 8, a filter unit 9 and a body unit 10.

The wheel base part 7 constitutes a chassis part of the cleaner body 2, and includes a support part 7a that supports the dust box 8, a wheel part 19, and a third handle 33.

The support portion 7a is connected to a lower portion of the dust box 8, and has a wheel portion 19 that rolls on a ground surface of the cleaner body 2.

The wheel portion 19 includes large-diameter rear wheels 19a (the left rear wheel 19a is not shown in fig. 2) provided on the left and right rear portions of the support portion 7a, and small-diameter front wheels 19b provided on the left and right front portions of the support portion 7 a.

The rear wheel 19a is attached to the support portion 7a at the rear portion of the support portion 7a so as to be rotatable about an axis extending in the left-right direction.

The front wheels 19b are disposed in front of the respective rear wheels 19a so as to correspond to the rear wheels 19 a. The front wheels 19b each have a caster (caster) structure that can rotate around a predetermined shaft extending in the vertical direction, and the cleaner body 2 can be easily turned around when the cleaner body 2 moves on the ground.

The third handle 33 has a grip portion 33a extending in the left-right direction in front of the support portion 7 a. A second handle 32, which will be described later, is provided above the third handle 33 and at a vertically intermediate portion of the outer peripheral surface of the dust box 8.

The dust box 8 is formed of a bottomed cylindrical body having an upper opening.

The dust box 8 in the present embodiment is formed by performing can manufacturing processing on a metal plate. A reinforcing rim B is formed around the trunk portion of the dust box 8. The reinforcing flange B is provided in a plurality of layers (2 layers in the present embodiment) at predetermined intervals in the vertical direction of the dust box 8. The dust box 8 is not limited to being made of metal, and may be made of other materials such as synthetic resin.

A dust collecting part 18 is formed in the space inside the dust box 8.

The dust collecting part 18 communicates with the outside of the dust box 8 through a hose connection port 20a connected to the hose 3 (see fig. 1).

The hose connection port 20a in the present embodiment is formed in a block 20 made of synthetic resin and fitted into the main body of the dust box 8. That is, the hose connection port 20a is formed to penetrate the block 20, thereby allowing the inside and outside of the dust box 8 to communicate with each other as described above.

The second handle 32 in this embodiment is integrally formed with the block 20. The second handle 32 is formed above the hose connection port 20a so as to extend obliquely forward and upward from the block body 20.

The second handle 32 has a grip portion 32a extending in the left-right direction in front of the dust box 8 so as to correspond to the grip portion 33a of the third handle 33.

These second handle 32 and third handle 33 are mainly used for the user to hold when dust accumulated in the dust box 8 is discarded.

The dust box 8 is provided with gripping devices 14 on the left and right sides of the upper side of the trunk portion. However, the left clamp device 14 is not shown in fig. 2.

The pair of left and right clamp devices 14 pull and fasten the peripheral edge portion 10a of the main body unit 10 to the dust box 8 side via the peripheral edge portion 9a of the filter unit 9 on the upper peripheral edge portion 8a of the dust box 8.

The filter unit 9 includes: a frame 91 formed in a basket shape; and a filter member 92 disposed so as to cover the outside of the frame body 91 while leaving the inside surrounded by the peripheral edge of the upper portion of the frame body 91.

The frame body 91 in the present embodiment is made of synthetic resin. The upper surface, outer peripheral surface, and lower surface of the peripheral edge of the upper portion of the frame body 91 are covered with an elastic member 92a constituting the peripheral edge portion of the filter member 92 described below. The elastic member 92a functions as a gasket when the body unit 10 is assembled to the dust box 8.

The filter member 92 includes: the filter main body 92b disposed so as to cover the outer side of the frame body 91 as described above; and the elastic member 92a formed integrally with the peripheral edge of the upper portion of the filter main body 92 b.

The filter main body 92b in the present embodiment is formed of, for example, a nonwoven fabric, a woven fabric, paper, or the like, and is formed into a substantially bag body having an upper opening.

The elastic member 92a is formed in a ring shape and has a substantially コ -shape in cross-sectional view. More specifically, the substantially コ letter of the elastic member 92a opens into the annular inner side, and the peripheral edge of the upper portion of the frame body 91 is fitted into the substantially コ letter from the opening. Thereby, the filter member 92 is assembled to the frame body 91, and the elastic members 92a of the filter member 92 are arranged on the upper surface, the outer peripheral surface, and the lower surface of the peripheral edge of the upper portion of the frame body 91 as described above. The filter unit 9 is housed in the dust box 8 when the body unit 10 is assembled to the dust box 8.

Next, the main body unit 10 will be explained.

As shown in fig. 2, the main body unit 10 includes: a main body case 11; an electric fan 15 (see fig. 4) housed in the main body case 11; a take-up reel 16 (see fig. 4); and a first handle 31 mounted to an upper side of the main body case 11.

The main body case 11 includes: an upper case 13 of a large diameter; and a small-diameter lower case 12 projecting downward from the bottom of the upper case 13.

First, the lower case 12 is described as being substantially cylindrical, and the lower case 12 is disposed in the dust box 8 when the main body unit 10 and the dust box 8 are assembled.

As described later, the motor portion 15b (see fig. 4) of the electric blower 15 (see fig. 4) is mainly housed in the lower case 12.

The upper case 13 is formed in a substantially disk shape that is thick in the vertical direction, and has a circular upper surface portion 13a and a side surface portion 13b forming a circumferential surface of the substantially disk shape in plan view. The side surface portion 13b has an inclined portion 13c forming a shoulder portion of a substantially disk shape as will be described later.

As will be described later, the upper case 13 houses therein mainly electronic components such as the suction fan 15a of the electric blower 15 (see fig. 4), the take-up reel 16 (see fig. 4), and a circuit board (not shown).

The first handle 31, the attraction indicator 21 as an operation state display unit, and the wire winding button 40 are disposed on the upper surface portion 13a of the upper case 13.

Further, an integrally molded portion 50 (see fig. 8) in which a discharge port 51 (see fig. 8) and the like described later are formed is disposed on the side surface portion 13b of the upper case 13. The integrally formed part 50 will be described in detail later.

First, the first handle 31 will be explained. As shown in fig. 2, the first handle 31 has a rod-shaped grip portion 31a and a pair of leg portions 31b integrally formed with the grip portion 31 a.

The grip portion 31a is disposed above the upper surface portion 13a of the upper case 13 so as to extend in the front-rear direction.

The support leg 31b connects each end of the grip 31a in the front-rear direction to the upper surface portion 13a of the upper case 13.

Fig. 3 is a top view of the cleaner body 2 in the present embodiment. Figure 4 is a partial sectional view of the cleaner body 2 of section IV-IV of figure 3.

As shown in fig. 3, the first handle 31, in which the grip portion 31a and the pair of leg portions 31b are integrated, extends in the front-rear direction over the entire radial direction of the upper surface portion 13a of the upper case 13.

That is, the extending direction of the first handle 31 coincides with the direction in which the cleaner body 2 linearly moves by the rear wheels 19 a. Therefore, the user holding the first handle 31 can smoothly move the cleaner body 2 linearly. In addition, even when the cleaner body 2 is turned around by the front wheels 19b (see fig. 2) from the linear movement of the cleaner body 2, the user can easily turn around by twisting the wrist holding the first handle 31.

In addition, such a first handle 31 includes, as shown in FIG. 4, a main handle member 311 forming a general outer shape of the first handle 31 and a covering member 312 covering a lower surface of the main handle member 311.

The main handle member 311 has: an exterior portion 311a having an inverted U-shape in cross section, and a plurality of ribs 311b formed integrally with the exterior portion 311a inside the exterior portion 311 a. The rib 311b is formed by a plurality of (5 in the present embodiment) flat plates extending in the extending direction of the first handle 31. These ribs 311b are formed to protrude downward from the inner circumferential surface of the exterior portion 311 a.

The covering member 312 is disposed so as to cover the front end of the rib 311b facing the lower side of the exterior portion 311 a. The covering member 312 in this embodiment is made of synthetic resin as in the first handle 31, but a rubber-like elastic body can be used.

When the user lifts up the electric vacuum cleaner 1, or attaches or detaches the body unit 10 to or from the dust box 8, a predetermined load is applied to the first handle 31 held by the user. At this time, the rib 311b reinforces the first handle 31. In addition, the covering member 312 prevents the front end of the rib portion 311b from hitting the hand of the user gripping the first handle 31, so that the gripping feeling becomes good.

As shown in fig. 3, as described above, the wired winding button 40 and the attraction indicator 21 (operation state display unit) are disposed on the upper surface portion 13a of the upper case 13.

The cord winding button 40 is a member for rewinding the power cord 17 (see fig. 8) pulled out from the take-up reel 16 (see fig. 8) onto the take-up reel 16 (see fig. 8) when pressed by the user. The suction force indicator 21 indicates a suction state (suction force) of the cleaner body 2 that changes according to the amount of dust collected in the dust box 8 (see fig. 2) and the degree of clogging of the filter member 92 (see fig. 2).

These wire winding button 40 and attraction indicator 21 are arranged so as to be aligned along the outer peripheral edge of the upper surface portion 13 a. Specifically, the cord winding button 40 is disposed at a position symmetrical to the suction force indicator 21 (operation state display unit) with the hose connection port 20a interposed therebetween when the cleaner body 2 is viewed from above.

Next, the wire winding button 40 will be described in further detail.

Fig. 5 is a perspective view of the wire winding button 40 in the present embodiment. In fig. 5, the outer peripheral edge of the upper case 13 fitted in the wired winding button 40 is shown by a phantom line (two-dot chain line). Fig. 6 is a plan view of the thread winding button 40 showing the shape of the pressing surface 41a of the thread winding button 40. In fig. 6, an upper surface portion 10b and a side surface portion 10c of the main unit 10 (cleaner main body) are shown by imaginary lines (two-dot chain lines).

As shown in fig. 5, the wire winding button 40 mainly includes: a head 41, a rotation shaft 42 and an action shaft 43.

A pressing surface 41a is defined on the upper surface of the head 41.

When the head 41 is disposed so as to fit into an opening formed at a predetermined position of the upper case 13, the head and the upper surface 13a and the side surface 13b of the upper case 13 form an outer surface of the main unit 10.

The pressing surface 41a of the wire winding button 40 in the non-pressed state is substantially flush with the upper surface portion 13a and the side surface portion 13b of the upper case 13, except for the projecting outer peripheral edge portion 44 described below.

That is, as shown in fig. 4, the pressing surface 41a of the wire winding button 40 in the present embodiment is formed from the upper surface portion 10b to the side surface portion 10c of the main unit 10 (cleaner body).

As shown in fig. 6, the pressing surface 41a located on the upper surface portion 10b of the main unit 10 (cleaner body) is formed in a fan shape that is wider toward the side surface portion 10c of the main unit 10 (cleaner body) when the wire winding button 40 is viewed in plan.

As shown in fig. 4, the side surface portion 10c of the main unit 10 (cleaner main body) in the present embodiment has an inclined portion 10d inclined so as to gradually expand outward as it goes downward from the upper surface portion 10b side. The pressing surface 41a at a position corresponding to the inclined portion 10d is also inclined in the same manner.

As shown in fig. 5, the head 41 of the wire winding button 40 includes: the pressing surface 41a flush with the upper surface portion 13a of the upper case 13 as described above; and a projecting outer peripheral edge 44 projecting upward between the side surface portion 13b of the upper case 13 and the flush pressing surface 41 a. The protruding outer peripheral edge portion 44 is located higher than the upper surface portion 13a of the upper case 13 in the vertical direction in a state where the cord wrap button 40 is not pressed.

The pair of rotating shafts 42 is provided at the end of the head 41 that is the radially inner side of the upper case 13 when the rotating shafts are disposed in the upper case 13. The rotating shaft 42 is supported by a bearing 13d (see fig. 4) provided on the upper case 13 side. The wire winding button 40, which is pressed by the user on the pressing surface 41a, is pressed by the head 41 moving downward by rotating about the rotating shaft 42.

The action shaft 43 is formed of a rod whose upper end is connected to the head 41.

The operating shaft 43 has a contact portion 43a that contacts a stopper 16a (see fig. 4) of the winding roll 16 (see fig. 4).

The abutting portion 43a is formed by cutting a side opposite to the stopper 16a (see fig. 4). Due to the cutout, the abutting portion 43a is formed in a tapered shape in such a manner as to taper gradually from the middle portion to the front end of the acting shaft 43.

As shown in fig. 4, the stopper 16a locks the winding roll 16 biased in a predetermined rotational direction by a winding mechanism (not shown). The stopper 16a is biased by a spring, not shown, toward the contact portion 43a of the operating shaft 43 to maintain the locked state with respect to the winding reel 16.

In the wire winding button 40, the head 41 pressed against the pressing surface 41a is rotated downward about the rotating shaft 42, and the contact portion 43a of the acting shaft 43 presses the stopper 16a against the biasing force of the spring. Thereby, the stopper 16a releases the locking state of the winding roll 16. The winding reel 16, from which the locking state is released, winds the power cord 17 by rotating a winding mechanism (not shown) in a predetermined direction.

When the user stops pressing the pressing surface 41a during or after winding the power cord 17, the stopper 16a returns to the original position by the biasing force of the spring. Thereby, the locking state of the winding roll 16 is maintained again. At this time, since the stopper 16a is restored to the original position, the wire winding button 40 is also restored to the original position before being pressed.

Next, the electric fan 15 housed in the main body case 11 will be described.

As shown in fig. 4, the electric blower 15 includes: a suction fan 15a housed in the upper case 13 of the main body case 11; and a motor portion 15b accommodated mainly in the lower case 12.

A fan suction port 15c is formed in the center of the suction fan 15a, and a fan exhaust port 15d is formed in the motor portion 15 b.

When the suction fan 15a is rotated by driving the motor portion 15b, the electric fan 15 sucks air from the fan suction port 15 c. In addition, the electric fan 15 discharges the sucked air into the lower case 12 through the fan discharge port 15 d.

The suction force generated by the electric fan 15 sucks air containing dust into the dust box 8 through the hose connection port 20a (see fig. 2). That is, the air containing dust is sucked into the dust box 8 through the suction tool 6, the extension pipe 5, the operation pipe 4, and the hose 3 shown in fig. 1.

The air sucked into the dust box 8 passes through the filter unit 9 and is discharged into the lower case 12 through the fan suction port 15c and the fan exhaust port 15 d. At this time, the filter unit 9 collects dust contained in the air and accumulates the dust in the dust collecting section 18.

The air discharged into the lower case 12 through the filter unit 9 flows into the flow path F1 formed around the motor unit 15b in the lower case 12. Then, the air flows from the flow path F1 to a flow path F2 partitioned in the upper case 13 so as to communicate with the discharge port 51 (see fig. 7) formed in the integrally molded part 50. At this time, although not shown, the air flow generated by the suction force of the electric fan 15 cools the power cord 17 and the circuit board (not shown) that generate heat.

Next, the integrally formed part 50 formed in the main body case 11 (upper case 13) will be described.

Fig. 7 is a partial perspective view of the cleaner body 2 as viewed obliquely from behind and above the cleaner body 2.

As shown in fig. 7, the integrally formed portion 50 is formed on the side surface portion 13b on the rear side of the upper case 13. In other words, the integrally formed part 50 is disposed on the rear side opposite to the front side of the hose connection port 20a (see fig. 2) of the cleaner body 2, which forms the air inlet.

The integrally formed part 50 in the present embodiment is formed to have a length of approximately one quarter of the circumference of the side surface part 13b, and is formed to partially bulge outward in the radial direction of the upper case 13 by a predetermined thickness from the side surface part 13b of the upper case 13. The vertical width of the integrally formed part 50 in the present embodiment is set to approximately match the height of the side surface part 13b of the upper case 13 excluding the inclined part 13 c.

The integrally formed portion 50 is formed with a discharge port 51, an air blowing discharge port 52, and a housing portion 53 for the power plug 17 a. As will be described later, an entrance 54 (see fig. 8) for the power cord 17 (see fig. 8) is formed in the housing portion 53 of the power plug 17 a.

The discharge port 51 in the present embodiment is formed in the center of the integrally formed part 50 (directly behind the cleaner body 2) when viewed from the rear of the cleaner body 2. The discharge port 51 is formed by a plurality of slits extending in the lateral direction.

Fig. 8 is a partial perspective view of the cleaner body 2 showing a section VIII-VIII of fig. 4.

As shown in fig. 8, the discharge port 51 discharges the air that has been discharged from the fan discharge port 15d (see fig. 4) and has flowed into the flow path F2. At this time, the Air in the flow path F2 is discharged through the High performance Filter 60 such as a HEPA Filter (High Efficiency Particulate Air Filter) or an ULPA Filter (Ultra Low permeability Air Filter) disposed inside the discharge port 51.

As shown in fig. 7, the air blowing outlet 52 is formed on the right side of the cleaner body 2 with respect to the outlet 51.

The air blowing outlet 52 is used to blow compressed air discharged from the fan air outlet 15d (see fig. 4). A valve plate 52a biased in a closing direction of the air outlet 52 by a spring, not shown, is disposed in the air outlet 52.

As shown in fig. 8, the valve plate 52a opens the air blowing discharge port 52 by rotating about the shaft portion 52b, and closes the flow path F2 passing through the discharge port 51.

The air blowing outlet 52 of the present embodiment can be connected to one end of the hose 3 (see fig. 1) connected to the hose connection port 20a (see fig. 2). When one end of the hose 3 is inserted into the hose connection port 20a, the valve plate 52a rotates to switch the flow of the flow path F2 passing through the discharge port 51 to the hose 3 side. Thus, the compressed air discharged from the tip of the extension pipe 5 (see fig. 1) from which the suction tool 6 (see fig. 1) is removed or the tip of the operation pipe 4 (see fig. 1) from which the extension pipe 5 (see fig. 1) is removed is used as the air blast.

As shown in fig. 7, the housing portion 53 of the power plug 17a is formed on the left side of the cleaner body 2 with respect to the discharge port 51. Specifically, air blowing outlet 52 and housing portion 53 of power plug 17a are disposed at symmetrical positions with respect to outlet 51 (symmetrical with respect to outlet 51).

The housing portion 53 of the power plug 17a is formed by a recess recessed toward the upper case 13 side. The storage portion 53 is sized such that substantially the entire power plug 17a is stored in the recess when the power cord 17 (see fig. 8) is wound around the take-up reel 16 (see fig. 8) and the power plug 17a abuts against the entrance 54 (see fig. 8) of the power cord 17. Thus, the power cord 17 is wound around the take-up reel 16 and is stored in the storage section 53 without interfering with the power plug 17a disposed in the storage section 53.

As shown by the grid lines in fig. 7, the housing portion 53 of the power plug 17a and the cord winding button 40 in the present embodiment have a different color from the other portions of the cleaner body 2. The "different color" preferably has a distinct brightness and color from the rest of the cleaner body 2. The storage section 53 and the wire winding button 40 are preferably set to the same color, and most preferably, to the same color.

For example, when the other portions of the cleaner body 2 are uniformly white, black, or the like, the color of the storage section 53 and the cord winding button 40 can be set to a uniform color selected from red, blue, yellow, fluorescent, and the like.

Next, the operation and effects of the electric vacuum cleaner 1 according to the present embodiment will be described.

As shown in fig. 2, the cleaner body 2 of the present embodiment is provided with an integrally formed portion 50 in the main body case 11.

As shown in fig. 7, the integrally formed portion 50 is formed with a discharge port 51, an air blowing discharge port 52, a housing portion 53 for the power plug 17a, and an inlet/outlet 54 (see fig. 8) for the power cord 17 (see fig. 8).

That is, according to the electric vacuum cleaner 1 of the present embodiment, the inlet and outlet 54 (see fig. 8) of the power cord 17 and the air blowing outlet 52 are integrally formed in the integrally formed portion 50. Therefore, according to the electric vacuum cleaner 1, when the user pulls out the power cord 17 from the cleaner body 2 or connects the hose 3 to the air blowing outlet 52, the user can easily recognize the positions of the inlet and outlet 54 (see fig. 8) and the air blowing outlet 52 of the cleaner body 2. This improves the operability of the electric vacuum cleaner 1.

If the vacuum cleaner is used with the power cord 17 (see fig. 8) having a length left on the winding roll 16 (see fig. 8), it is necessary to consider a cooling structure of the power cord 17 that generates heat on the winding roll 16.

In contrast, in the electric vacuum cleaner 1 of the present embodiment, since the exhaust system such as the discharge port 51 and the air blowing discharge port 52 is integrally disposed in the integrated portion 50 in proximity to the inlet 54 (see fig. 8) of the power cord 17 (see fig. 8), the cord reel 16 around which the power cord 17 (see fig. 8) is wound is disposed in proximity to the exhaust system.

Thus, according to the electric vacuum cleaner 1, the cooling structure of the power cord 17 of the cord reel 16 becomes easy to construct.

As shown in fig. 2, the electric vacuum cleaner 1 of the present embodiment has a hose connection port 20a, which is an air intake port by the suction force of the electric fan 15 (see fig. 4), disposed on the front side of the cleaner body 2. On the other hand, an exhaust system such as the discharge port 51 and the air blowing discharge port 52 is formed integrally with the integrally formed part 50 and is disposed on the rear side of the cleaner body 2.

According to the electric vacuum cleaner 1, since the air is discharged to the rear side of the cleaner body 2, it is possible to prevent the dust on the floor surface on the front side of the cleaner body 2 to be cleaned by the electric vacuum cleaner 1 from being lifted up by the discharged air.

Further, according to the electric vacuum cleaner 1, since the exhaust air is discharged to the rear side of the cleaner body 2, it is possible to avoid the exhaust air from being blown to the user and giving a sense of discomfort in the standing position of the user when the electric vacuum cleaner 1 is used.

As shown in fig. 7, in the electric vacuum cleaner 1 of the present embodiment, the air blowing outlet 52 is formed at a position symmetrical to the inlet and outlet 54 (see fig. 8) of the power cord 17 (see fig. 8) with the outlet 51 interposed therebetween. That is, the air outlet 52 and the inlet and outlet 54 are disposed at a predetermined interval.

This can prevent the power cord 17 and the hose 3 from interfering with each other when the hose 3 (see fig. 1) is attached to the air outlet 52. That is, according to the electric vacuum cleaner 1, the air blowing operation can be easily performed in a wide range.

In the electric vacuum cleaner 1 of the present embodiment, components belonging to the operation and manipulation system, such as the wire winding button 40 and the suction force indicator 21 (operation state display unit), are disposed on the front side of the cleaner body 2. That is, the components belonging to the operation and manipulation system in the standing position of the user when the electric vacuum cleaner 1 is used are easy to use.

While the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and can be implemented in various forms.

Although the above embodiments have been described as applied to a commercial vacuum cleaner, the present invention can also be applied to a household vacuum cleaner.

In the above embodiment, the vacuum cleaner having the air blowing outlet 52 has been described, but the present invention can be applied to any vacuum cleaner having the air blowing outlet 52.

Description of the reference numerals

1 electric vacuum cleaner

2 vacuum cleaner main body

3 Flexible pipe

4 operating tube

5 extension pipe

6 suction piece

7 wheel base

8 dust collection box

9 Filter unit

10 main body unit

11 Main body shell

12 lower shell

13 upper shell

13a upper surface part

13b side surface part

13c inclined part

14 clamping device

15 electric fan

15a suction fan

15b Motor section

16 winding roll

16a stop

17 power cord

17a power plug

18 dust collecting part

19 wheel part

19a rear wheel

19b front wheel

20 block

20a hose connecting port

21 attractive force indicator (operation state display part)

31 first handle

32 second handle

33 third handle

40 wire winding button

41a pressing surface

50 integrally formed part

51 discharge port

52 blast air outlet

53 power plug's receiving part

54 power cord inlet and outlet

311 Main handle part

311a exterior part

311b rib

312 cover the component.

Claims (4)

1. An electric vacuum cleaner, characterized in that:

comprising: a main body case housing an electric fan generating an attraction force and a winding roll winding and housing a power line; and

a dust box formed as a bottomed cylindrical body having an upper opening and having the body case disposed on an opening side,

the electric vacuum cleaner further includes an air blowing outlet connectable to one end of a hose connected to a hose connection port, and the compressed air discharged from the air blowing outlet can be used for air blowing by switching a flow path passing through an outlet of exhaust air from the electric blower to the hose side by rotation of a valve plate disposed at the air blowing outlet by inserting the one end of the hose into the hose connection port,

an exhaust port for exhaust from the electric blower, an inlet/outlet for the power cord, and the air blowing exhaust port are formed in an integrally formed portion of the main body case so as to be arranged in parallel in the circumferential direction of the bottomed cylindrical body,

the air flowing to either one of the exhaust port of the exhaust air from the electric fan and the air blowing port flows along the circumferential direction of the take-up reel on the side surface of the take-up reel.

2. The electric vacuum cleaner of claim 1, wherein:

the integrally formed part is disposed on a rear side opposite to a front side of the cleaner body where an air suction port using a suction force of the electric fan is formed.

3. The electric vacuum cleaner according to claim 1 or 2, wherein:

the air blowing outlet is formed at a position symmetrical to the inlet and outlet of the power cord with the outlet of the exhaust air from the electric fan interposed therebetween.

4. The electric vacuum cleaner of claim 2, wherein:

further comprises a wire winding button for winding the power wire on the winding roll,

the cord winding button is disposed at a position closer to the front side of the cleaner body.

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