JP2021003266A - Vacuum cleaner - Google Patents

Abstract

To provide a vacuum cleaner which is configured to be capable of freely designing an opening/closing force of an opening/closing type lid of an engaging part for holding the state where the lid is closed without increasing the number of components in the vacuum cleaner provided with the lid for a dust collection part.SOLUTION: A lock member 13c secures the state in which a dust case cover 13 is closed, and the lock member 13c is provided with two slits 13f. By warping and engaging only a part pinched with the slits 13f, the state where the dust cover 13 is closed is secured. Thus, the whole lock member 13c does not need to warp, so that the dust case cover 13 can be opened/closed by a small force. Moreover, by changing depth of the slit 13f, the opening/closing force of the dust case cover 13 can be adjusted, so that the opening/closing force can be freely designed.SELECTED DRAWING: Figure 3

Description

The present invention relates to a vacuum cleaner.

In a vacuum cleaner provided with an openable lid on the dust collector, engagement is used to keep the lid closed. This engaging portion is integrated with a lid that covers the dust collecting portion, and a wide plate-shaped rib is proposed, and the plate-shaped rib is bent. (See, for example, Patent Document 1).

Japanese Patent No. 4920503

In the vacuum cleaner described in Patent Document 1, the opening / closing force is also stabilized by stabilizing the dimensions with wide plate-shaped ribs. Further, the wider the plate-shaped rib, the higher the dimensional accuracy and the less play can be reduced. However, with wide ribs, it becomes difficult to bend and the opening and closing force becomes large. Further, in order to reduce the opening / closing force, the rib width is narrowed, so that the opening / closing force may become unstable.

Therefore, an object of the present invention is to provide an electric vacuum cleaner that leads to weight reduction without increasing the number of parts and can freely design the opening / closing force of the lid.

The present invention includes a vacuum cleaner main body including a dust collecting unit for collecting dust and an electric blower for generating suction force, and the vacuum cleaner main body covers a resin lower case and an upper part of the electric blower. In an electric vacuum cleaner provided with a case and a resin cover that hides the upper case when the vacuum cleaner is used, an engaging portion is provided on the retractable resin cover, and the deflection of the engaging portion serves as an opening / closing force. The feature is that the opening / closing force can be freely adjusted by the slit provided in the engaging portion.

According to the present invention, it is possible to provide a vacuum cleaner having excellent weight reduction in which the opening / closing force of the lid can be freely designed.

It is an external perspective view which shows the whole of the vacuum cleaner which concerns on this embodiment. It is a partially disassembled perspective view which shows the vacuum cleaner main body. It is a perspective view which shows the state which opened the dust case cover in a vacuum cleaner main body. (A) is a perspective view from the outside of the dust case cover, and (b) is a perspective view from the inside. It is a rear view of a vacuum cleaner body. It is a top view of the upper case. It is a perspective view which shows the state which removed the exhaust cover from the vacuum cleaner main body. It is a rear view of the vacuum cleaner main body shown in FIG. It is a vertical sectional view of a vacuum cleaner body. It is a figure which showed the wind flow of the dust collecting part in the vertical sectional view of the vacuum cleaner main body. It is a perspective view of a case. (A) is a sectional view taken along line AA of FIG. 9, (b) is a sectional view taken along line EE of (a), and (c) is a sectional view taken along line EE of (a). 9 is a cross-sectional view taken along the line BB of FIG. FIG. 9 is a cross-sectional view taken along the line CC of FIG. It is sectional drawing of a wheel. It is a front view which shows the separate handle. It is an exploded perspective view which shows the separate handle. It is a rear view when the handle cover is seen from the back side. (A) is a sectional view taken along line CC of FIG. 14, (b) is a sectional view taken along line DD of (a), and (c) is a sectional view taken along line EE of (a).

Hereinafter, embodiments according to the present invention will be described with reference to the drawings as appropriate, but the present embodiment is not limited to the following contents, and can be appropriately modified and implemented within the scope of the present invention.

FIG. 1 is an external perspective view showing the entire vacuum cleaner according to the present embodiment.
As shown in FIG. 1, the vacuum cleaner 1 is configured to include a vacuum cleaner main body 2, a hose 3, an operation pipe 4, an extension pipe 5, a suction tool 6, a separate handle 30, and the like.

One end of the hose 3 is connected to the vacuum cleaner main body 2, and the other end is connected to one end of the operation pipe 4. The operation tube 4 includes a grip 4a provided with a hand operation switch and the like. The extension pipe 5 is configured to be expandable and contractible by an outer pipe 5a and an inner pipe 5b.

FIG. 2 is a partially disassembled perspective view showing the vacuum cleaner main body. In FIG. 2, the cord of the cord reel 17 is not shown.
As shown in FIG. 2, the vacuum cleaner main body 2 is a so-called paper pack type, and includes a lower case 11, an upper case 12, a dust case cover (dust collecting lid) 13, and an exhaust cover 14.

The lower case 11 constitutes the outer shell (appearance) of the lower part of the vacuum cleaner main body 2, and is made of a synthetic resin material (not containing carbon fibers) such as PP (Polypropylene) resin. Further, the lower case 11 has a recess 11a whose upper portion is opened in a substantially rectangular shape, and an electric blower 15 for generating suction force, a case 16 for accommodating the electric blower 15, a cord reel 17, and an electric blower 15 (see FIG. 9). ) Is housed in the control board 18 and the like. Further, the lower case 11 has a dust collecting unit 19 for accommodating the dust collected by the suction force of the electric blower 15.

Further, in the lower case 11, the electric blower 15, the cord reel 17, and the control board 18 are arranged on the rear side from the substantially center in the front-rear direction, and the dust collecting portion 19 is arranged on the front side from the substantially center in the front-rear direction. The electric blower 15 and the cord reel 17 are arranged in the front-rear direction, and the cord reel 17 is arranged behind the electric blower 15. The control board 18 is arranged above the case 16 that houses the electric blower 15. A lid packing 19a is attached to the upper edge of the dust collecting portion 19 in an annular shape. Note that FIG. 3 shows a state in which an unused paper pack 22 is housed.

The upper case 12 has a shape that covers the entire upper side of the electric blower 15, the cord reel 17, and the control board 18, and is fixed to the lower case 11. Further, a take-up button 23 that is pressed when the power cord 17b (see FIG. 9) of the cord reel 17 is taken up is provided on the upper portion of the upper case 12. The take-up button 23 is urged upward by a spring (not shown).

The dust case cover 13 constitutes a part of the outer shell (appearance) of the upper part of the vacuum cleaner main body 2, and mainly opens and closes the upper part of the dust collecting portion 19. Further, the dust case cover 13 is made of a material (not containing carbon fibers) made of synthetic resin such as ABS resin. Further, the dust case cover 13 has an outer surface 13a formed in a substantially cylindrical shape upward.

The outer surface 13a of the dust case cover 13 is composed of a plurality of minute irregularities forming a surface, and these minute irregularities are irregularly shaped pieces of triangles, and the surface is formed by a collection of adjacent triangles, and the dust case cover is covered. The outer surface of 13 is covered almost entirely. Further, the outer surface 13a is painted to enhance the design. Since the outer surface 13a reflects light at all angles, as is known for cutting diamonds, it can always reflect light even if the viewing angle is changed.

The exhaust cover 14 forms a part of the outer shell (appearance) of the upper part of the vacuum cleaner main body 2, and is provided adjacent to the rear of the dust case cover 13. Further, the exhaust cover 14 is made of a material (not containing carbon fibers) made of synthetic resin such as ABS resin.

Further, the exhaust cover 14 has an outer surface 14a having the same curvature as the outer surface 13a of the dust case cover 13, and when the dust case cover 13 is closed (see FIG. 1), the outer surface 14a and the outer surface of the dust case cover 13 are formed. It is configured so that it is flush with 13a.

Further, the exhaust cover 14 includes an opening 14b that exposes the operation surface of the take-up button 23, a plug outlet 14c from which the connection plug 17c (see FIG. 5) is pulled out, and an exhaust port 14d for exhausting to the outside. have.

FIG. 3 is a perspective view showing a state in which the dust case cover 13 is opened in the vacuum cleaner main body.
As shown in FIG. 3, ribs 13b protruding along the lid packing 19a of the dust collecting portion 19 are formed on the back surface of the dust case cover 13. Further, on the back surface of the dust case cover 13, a lock member 13c that engages with and locks the front end of the hose port 21 is provided.

In the upper part of the upper case 12, a hinge portion 12b that rotatably supports the dust case cover 13 is formed in the vicinity of the exhaust cover 14. The dust case cover 13 is configured to be opened until it faces upward in the vertical direction.

4A and 4B are perspective views of the dust case cover 13, FIG. 4A is a perspective view from the outside of the dust case cover, and FIG. 4B is a perspective view from the inside.
The inner surface 13d of the dust case cover 13 is a surface that follows the minute irregularities of the outer surface 13a so that the thickness of the resin becomes uniform, and the weight is reduced by reducing the resin having a height difference caused by the minute irregularities. Further, the repetition of minute irregularities has a substantially honeycomb structure, so that the rigidity is higher than that of a smooth surface. As a result, the thickness of the resin of the dust case cover 13 can be made thinner than before, resulting in weight reduction.

In this embodiment, a case in which minute irregularities are applied to almost the entire surface with an irregular triangle has been described as an example, but not only the irregular shape but also a partial fixed shape or a fixed shape may be used. , A combination of a triangle and a shape other than a triangle, or a combination other than a triangle, or may be provided on a part of the outer surface 13a instead of substantially the entire surface, and the same applies to the inner surface 13d, and such various methods can be selected. Further, since it takes time to manufacture the mold to provide the inner surface 13d with fine irregularities, a smooth surface may be applied without providing fine irregularities. The minute unevenness may be composed of only polygons (triangles, quadrangles, pentagons, hexagons, etc.) or a combination of various polygons.
Further, although the minute unevenness is applied by the dust case cover 13, it may be applied to other parts.

The lock member 13c of the dust case cover 13 can hide the screw hole 21c of the hose port 21 with the dust case cover 13 closed. Further, the lock member 13c secures the closed state of the dust case cover 13, and the engaging portion may be small. Since the dust case cover 13 and the lock member 13c are made of an integral resin, they can be bent due to their characteristics when opening and closing, and locking and unlocking can be repeated.

Further, the dust case cover 13 is opened and closed by putting a hand on the tip of the dust case cover 13 in the front direction, but at this time, the lock member 13c may be unknowingly touched by a finger. In this case, since the lock member 13c is prevented from bending, the dust case cover 13 cannot be opened. Therefore, a rib 13e is provided in front of the lock member 13c to prevent a finger from touching the lock member 13c when the dust case cover 13 is opened.

Since the lock member 13c is wide, it is difficult to bend. The lock member 13c is a rib, and by thinning only the root thereof (not shown), the lock member 13c is easily bent. Further, the lock member 13c is provided with a slit 13f, and even if the entire rib of the lock member 13c does not bend, only the engaging portion sandwiched between the slits 13f can be bent, so that dust can be bent with a small force. The structure is such that the case cover 13 can be opened and closed. Since the opening / closing force of the dust case cover 13 can be adjusted by changing the depth of the slit 13f, the opening / closing force can be freely designed.

The dust collector 19 communicates with the hose connection port 21b formed in the hose port 21 and also communicates with the space in which the electric blower 15 (see FIGS. 2 and 8) is housed via the filter 19b. In this embodiment, a paper carton type vacuum cleaner will be described as an example, but the present embodiment can also be applied to a cyclone type vacuum cleaner.

FIG. 5 is a rear view of the vacuum cleaner main body.
As shown in FIG. 5, large-diameter wheels 20a and 20a are rotatably attached to the rear left and right side surfaces of the lower case 11. Further, a wheel 20b whose orientation can be changed is attached to the lower surface of the lower case 11.

The exhaust port 14d formed in the exhaust cover 14 has a plurality of slit-shaped holes 14d1 and is arranged in parallel with each other. Further, the exhaust port 14d is formed asymmetrically from the substantially upper portion to the left end of the exhaust cover 14 on the curved outer surface 14a. The plug outlet 14c is formed so as to project from the right end of the outer surface 14a, and has holes that are open to the right and rear.

FIG. 6 is a plan view of the upper case.
As shown in FIG. 6, in the upper case 12, screw insertion holes 12c for screw fixing to the lower case 11 are formed at both left and right ends of the front end portion and substantially the center of the rear end portion. Further, the upper case 12 is formed with screw insertion holes 12d into which screws for fixing the exhaust cover 14 to the upper case 12 are inserted at both left and right ends substantially in the center in the front-rear direction. Further, on the back surface of the upper case 12, bosses 12e and 12e for screwing and fixing the exhaust cover 14 are formed so as to project rearward.

Further, in the upper case 12, a substantially rectangular exhaust communication hole 12f is formed on the left side of the rear portion, and a substantially rectangular exhaust communication hole 12g is formed on the right side of the rear portion. Further, the upper case 12 is formed with a regulating plate 12h that regulates the connection plug 17c from being drawn into the vacuum cleaner main body 2. A hole 12h1 from which the power cord 17b is pulled out is formed in the regulation plate 12h.

Further, the upper case 12 is formed of a glass fiber reinforced plastic containing glass fibers, and has higher rigidity than ABS resin, which is a resin containing no glass fibers. Further, by applying PP resin rather than ABS resin, the weight can be further reduced.

FIG. 7 is a perspective view showing a state in which the exhaust cover is removed from the vacuum cleaner main body. Note that in FIG. 7, the power cord 17b of the cord reel 16 is not shown.
As shown in FIG. 7, when the exhaust cover 14 is removed from the vacuum cleaner main body 2, the exhaust communication holes 12f and 12g are exposed. In the exhaust communication holes 12f and 12g, the air discharged from the case 16 (see FIGS. 2 and 8) accommodating the electric blower 15 is discharged from the side of the electric blower 15 to the side of the exhaust cover 14 via the upper case 12. It is configured as an air passage through.

In the vacuum cleaner 1 configured in this way, the lower case 11 made of PP resin (not containing glass fiber) including the electric blower 15 and the dust collector 19 and the upper case 11 of the electric blower 15 are covered with the lower case 11. The upper case 12 made of resin containing glass fiber to be attached and the cover (dust case cover 13 and exhaust cover 14) made of ABS resin (not containing glass fiber) that hides the upper case 12 when using a vacuum cleaner (see FIG. 1). ) And. According to this, the high-rigidity vacuum cleaner main body 2 can be configured by applying the upper case 12 made of resin containing glass fiber instead of configuring the entire case (housing) with ABS resin or the like. Moreover, in the vacuum cleaner 1, by concealing the upper case 12 made of resin containing glass fibers, the upper case 12 can be made invisible from the outside, so that it is possible to prevent the appearance from being spoiled. Further, in the vacuum cleaner 1, the dust case cover 13 made of ABS and the exhaust cover 14 made of ABS are used, for example, by using sheet insert molding, so that the vacuum cleaner has a high design (high quality in appearance). Machine 1 can be realized.

Further, in the vacuum cleaner 1, the cover covering the upper case 12 is composed of two parts, a dust case cover 13 for opening and closing the dust collecting portion 18 and an exhaust cover 14 provided with an exhaust port 14d. When opening and closing the dust portion 18, it is possible to prevent the dust portion 18 from protruding outward from the vacuum cleaner main body 2, and the dust case cover 13 can be opened and closed compactly.

Further, in the vacuum cleaner 1, since the exhaust communication holes 12f and 12g of the upper case 12 are hidden by the exhaust cover 14 (because they cannot be seen from the outside), the degree of freedom of the exhaust communication holes 12f and 12g is increased. This makes it easier to adjust the direction of exhaust and the amount of exhaust.

FIG. 8 is a rear view of the vacuum cleaner main body shown in FIG. 7.
As shown in FIG. 8, a substantially semicircular opening 12 m is formed on the back surface of the upper case 12. An elongated plate-shaped wall portion 12m1, 12m2, 12m2 extending in the vertical direction is formed in the opening 12m. Exhaust communication holes 12n1, 12n1, 12n2, 12n2 that communicate the inside and outside of the upper case 12 are formed on both the left and right sides of the wall portions 12m1, 12m2, 12m2. The exhaust communication holes 12n1 and 12n2 are configured as passages through which the air discharged from the electric blower 15 (see FIGS. 2 and 8) escapes from the side of the electric blower 15 to the side of the exhaust cover 14 via the upper case 12. There is.

FIG. 9 is a vertical cross-sectional view of the vacuum cleaner body.
As shown in FIG. 9, the electric blower 15 includes a fan motor portion 15d in which the fan 15a and the electric motor 15b are housed in a metal housing 15c, and a case 16 in which the fan motor portion 15d is housed. There is.

Further, the electric blower 15 is horizontally arranged so that the fan 15a faces forward, and an intake port 15e for sucking the exhaust gas from the dust collecting portion 19 is formed on the front surface. Further, the fan motor portion 15d is housed in the case 16 made of synthetic resin via the anti-vibration rubber 15f. The case 16 is screwed into the lower case 11.

FIG. 10 is a vertical cross-sectional view of the vacuum cleaner body showing the flow of wind in the dust collecting portion.
Dust and the like sucked by the electric blower 15 pass through the paper pack 22 housed in the dust collecting unit 19. The flow of wind at this time is indicated by a white arrow (see arrow R1). Since the sucked dust and the like accumulate inside the paper pack 22, the paper pack 22 swells greatly in the dust collecting portion 19, and the paper pack 22 filled with dust and the like reaches the replacement time.

To replace the paper pack 22, open the dust case cover 13 and take it out above the dust collecting unit 19. The paper pack 22 has a dust intake port 22a, and when the paper pack 22 is taken out, the intake port 22a can be covered with a sticker 22b to prevent dust and the like from scattering or spilling. Since the sticker 22b is interlocked so as to close the intake port 22a in accordance with the movement of taking out the paper pack 22, the sticker 22b can be attached and the intake port 22a can be closed by simply touching the hand lightly. Further, the seal 22b needs to have a size capable of covering the intake port 22a.

On the other hand, in the paper pack 22 filled with dust or the like, even if the wind flow of the arrow R1 decreases, there is a wind flow passing through the arrow R2, and even if the paper pack 22 is filled with dust or the like, the suction force Can be sustained. The arrow R2b has an air passage at the base of the rib 13 g of the dust case cover 13 located above the paper pack 22. Since the ribs 13g are provided, a space can be secured to prevent the paper pack 22 from sticking to the inner surface 13d of the dust case cover 13, and this is the air passage of the arrow R2b. Further, the arrow R2c is an air passage passing through the rear side of the paper pack 22.

There is a seal 22b on the air passage of the arrow R2, which is in a position to obstruct the flow. Therefore, the seal 22b is bent and stored at a position approximately half in the front-rear direction. As a result, the seal 22b on the arrow R2a does not block the air passage. Further, the bent seal 22b does not hinder the movement of blocking the intake port 22a when the paper pack 22 is taken out. As a result, even if the paper pack 22 with the sticker 22b is mounted, the replacement period of the paper pack 22 can be extended by the flow of the arrow R2.

FIG. 11 is a perspective view of the case 16, and the shaded portion shows a portion 16a in which the anti-vibration rubber 15 g is stored. The case 16 has a cylindrically shaped portion 16e having a substantially cylindrical shape and an exhaust portion 16d. The bottom surface portion 16f of the cylindrical portion 16e has a flat portion 16f1, a convex portion 16b protruding inward of the case 16 from the flat portion 16f1, and a portion 16a surrounded by 16b.
Location 16a is a substantially rectangular opening. The convex portion 16b is a substantially rectangular ring shape, but has a notch 16c in a part thereof. In this embodiment, the notch 16c has two portions on the diagonal line of a substantially rectangular shape. In other words, the convex portion 16b has two portions, each forming one short side and one long side of the rectangle, and there is a notch 16c between the two portions.

12 (a) is a cross-sectional view taken along the line AA of FIG. As shown in FIG. 9, the electric blower 15 is housed in the case 16 via the anti-vibration rubber 15 g. As shown in FIG. 12A, the anti-vibration rubber 15 g is arranged so as to be surrounded on all sides by a substantially annular convex portion 16b of the case 16 and suppresses movement in the rotational direction on the inner side surface of the convex portion 16b. .. Further, by receiving the anti-vibration rubber 15 g on the top surface on the front surface side of the convex portion 16b, the movement in the front-rear direction is also suppressed. If this convex portion 16b is replaced with a rib, it is necessary to reinforce the rib and increase the wall thickness so as to withstand a drop impact, resulting in an increase in mass, sink marks, and short shots. Therefore, a thick bag shape is used as in this embodiment. A convex shape is preferable. It should be noted that there is a possibility that problems such as mass increase, sink marks and short shots can be solved by using a plurality of ribs.

The convex portion 16b is formed in a substantially annular shape so as to surround the periphery of the anti-vibration rubber 15g, but the notch 16c has a structure in which a substantially rectangular corner portion is partially cut out. With this notch 16c, the contact area between the anti-vibration rubber 15g and the convex portion 16b of the case 16 can be reduced, and the propagation of vibration from the electric blower 15 to the case 16 can be reduced. FIG. 12B is a cross-sectional view taken along the line EE of FIG. 12A and shows a structure in which the convex portion 16b and the anti-vibration rubber 15g are in contact with each other. On the other hand, FIG. 12 (c) is a cross-sectional view taken along the line DD of FIG. 12 (a). Since the cross section is crossed across the notch 16c, there is no convex portion 16b and the rubber is not in contact with the anti-vibration rubber 15g. Further, since the volume of the notch 16c can be reduced as compared with surrounding the entire circumference, the weight can be reduced.

Further, one of the notches 16c (the notch 16c located at the lower left in FIG. 11) faces the direction of the exhaust portion 16d. By providing at least one of the notches 16c in the direction of the exhaust portion 16d in this way, the loss of the main body can be reduced and the exhaust can be smoothly exhausted to the filter 24 provided in the exhaust portion 16d.

Further, the case 16 has a large volume by making the notch 16c and the inside of the case 16 substantially cylindrical, and the exhaust passage to the exhaust portion 16d and the filter 24 is also widened so as to be close to the shape of the filter 24. As a result, it is possible to prevent the exhaust from stagnation in the case 16, reduce the loss, and improve the suction power.

The vacuum cleaner main body 2 is formed with a handle portion 21c having a concave cross-sectional shape for lifting and transporting the vacuum cleaner main body 2 by hooking a finger on the lower surface of the front end (lower side of the hose connection port 21b) of the lower case 11. ing.

Further, in the upper part of the vacuum cleaner main body 2, a space Q1 is formed between the upper case 12 and the dust case cover 13, and a space Q2 is formed between the upper case 12 and the upper surface 14s of the exhaust cover 14. Further, in the back portion of the vacuum cleaner main body 2, a space Q3 is formed between the upper case 12 and the back surface 14t of the exhaust cover 14.

Further, a control board 18 made of a board 18b provided with various electric components 18a is attached to the upper part of the case 16 by screws and claws. An electric component 18a is provided on the upper surface of the substrate 18b. A space Q4 through which air passes is formed between the control board 18 and the upper case 12.

The cord reel 17 includes a reel portion 17a for winding or unwinding the cord 17b, and a power cord 17b connected to a commercial power source. The reel portion 17a is rotatably supported in the lower case 11 so that the rotating shaft 17g is arranged so as to face the front-rear direction.

FIG. 13 is a cross-sectional view taken along the line BB of FIG.
As shown in FIG. 13, in the electric blower 15, the exhaust portion 16d is formed on the right side surface (left side in the drawing) of the case 16. A filter 24 for air purification is attached to the exhaust portion 16d. Examples of the filter 24 include a HEPA filter (High Efficiency Particulate Air Filter) and a ULPA filter (Ultra Low Penetration Air Filter).

Further, as shown by the white arrows in FIG. 13, the exhaust emitted from the exhaust unit 16d flows upward (see arrow R3), and then flows through the control board 18 from the right direction to the left direction (arrows). (Refer to R4), it is configured to flow backward (see arrow R5) through the communication hole S1 shown by shading. The wall surface of the electric blower 15 is brought into contact with the edge of the disk 17a1 of the reel portion 17a and the edge of the partition plate 12i extending downward from the back surface (lower surface) of the upper case 12. Is configured. As a result, the exhaust gas emitted from the exhaust unit 16d does not flow directly toward the cord reel 17.

FIG. 14 is a cross-sectional view taken along the line CC of FIG. In FIG. 14, the cord portion of the power cord 17b is not shown, and only the connection plug 17c is shown.
As shown in FIG. 14, the exhaust (see arrow R6) that has passed through the communication hole S1 (see FIG. 13) flows toward the exhaust communication holes 12f and 12g and cools the cord reel 17 (see FIG. 9). It is flowing while. The exhaust gas that has passed through the exhaust communication hole 12f flows between the upper case 12 and the exhaust cover 14, and is discharged from the hole on the left side of the exhaust port 14d (see arrow R7). Further, the exhaust gas that has passed through the exhaust communication hole 12g flows between the upper case 12 and the exhaust cover 14, and is discharged from the hole on the right side of the exhaust port 14d (see arrow R8). Further, the exhaust gas that has not passed through the exhaust communication holes 12f and 12g is discharged to the outside through the gap between the plug outlet hole 14c through which the power cord 17b is inserted and the power cord 17b (see arrow R9).

FIG. 15 is a cross-sectional view of the wheel. The wheel 20a is made of PP resin, and a shaft portion 20d rotatably supported by the lower case 11 is formed at the center of the disc-shaped wheel body 20c in the radial direction. Further, almost the entire outer surface of the wheel body 20c is textured so that scratches are not noticeable.

In the vacuum cleaner 1 configured in this way, in the vacuum cleaner main body 2, the electric blower 15 and the cord reel 17 are arranged in the front-rear direction (see FIG. 9), and the exhaust portion 16d is provided on the side surface of the electric blower 15. Therefore, the left and right width of the main body can be made small while installing a filter for air purification.

Further, in the vacuum cleaner 1, the height of the electric blower 15 can be lowered and the height of the vacuum cleaner main body 2 can be lowered by providing the exhaust portion 16d on the side surface of the electric blower 15. According to this, since most of the air discharged from the electric blower 15 forms a flow path that crosses the control board 18, even if the control board 18 is arranged above the electric blower 15, the height of the vacuum cleaner main body 2 is high. It is possible to prevent the size from becoming too large.

Further, in the vacuum cleaner 1, the control board 18 is arranged on the upper part of the electric blower 15, and in the space between the upper case 12 and the exhaust cover 14 on the opposite side of the electric blower 15 from the exhaust portion 16d. A communication hole S1 for passing exhaust gas is formed. According to this, the control board 18 can be cooled efficiently.

Further, in the vacuum cleaner 1, since the periphery of the electric blower 15 is covered with a triple wall by the case 16, the upper case 12, and the exhaust cover 14, there is an effect that noise (exhaust noise, etc.) can be reduced. ..

Further, since the upper case 12 is covered with the dust case cover 13 and the exhaust cover 14, an external impact is not directly applied to the upper case 12, so that the upper case 12 can be made thinner. It can be made lighter.

Next, the separate handle 30 will be described with reference to FIGS. 16 to 19. 16 is a front view showing the separate handle, FIG. 17 is an exploded perspective view showing the separate handle, FIG. 18 is a rear view when the handle cover is viewed from the back side, and FIG. 19 (a) is FIG. The FF line sectional view, (b) is the GG line sectional view of (a), and (c) is the HH line sectional view of (a). The separate handle 30 can be appropriately selected by the user whether to be attached and used (see FIG. 1) or not attached.

As shown in FIG. 16, the separate handle 30 includes a substantially cylindrical hose insertion portion 31 through which a joint (not shown) of the hose 3 (see FIG. 1) is inserted, and a grip 32 which is a portion gripped by the user. , And a pair of arm portions 33, 33 for joining the hose insertion portion 31 and the grip 32.

The grip 32 includes a rounded portion 32a formed in a substantially U shape and straight portions 32b and 32b formed in a substantially linear shape, the rounded portion 32a is located on the front side, and the straight portions 32b and 32b are on the rear side. It is configured to be located in. Further, the grip 32 is inclined so that the rounded portion 32a is obliquely upward.

The arm portions 33 are arranged in an inverted C shape in front view, and are joined at the position of the straight portion 32b. As a result, a hand can be inserted into the space surrounded by the grip 32, the arm portions 33, 33, and the hose insertion portion 31, and the rounded portion 32a of the grip 32 can be grasped by hand.

As shown in FIG. 17, the grip 32 includes a main body portion 34 integrally formed with the hose insertion portion 31 and the arm portion 33, and a grip cover 35 covering the entire outer surface side of the main body portion 34. ing.

The main body portion 34 has an inner surface portion 34s forming the inner surface of the rounded portion 32a and an inner surface portion 34t forming the inner surface of the straight line portion 32b.

The grip cover 35 has an outer surface portion 35s forming the outer surface of the rounded portion 32a and an outer surface portion 35t forming the outer surface of the straight line portion 32b.

In this way, by forming the grip 32 with two parts, the main body portion 34 and the grip cover 35, the grip 32 can be made into a rounded and thick shape, so that the user can easily hold the grip 32. Further, the vacuum cleaner main body 2 can be reduced in weight by using the separate handle 30 without attaching it.

As shown in FIG. 18, a claw portion 35a projecting substantially rearward is formed at the lower end edge portion of the rounded portion 35s. The claw at the tip of the claw portion 35a faces downward. Further, on the upper inner surface of the rounded portion 35s, protrusions 35f protruding in an L shape are formed at a plurality of locations.

The straight portion 35t is formed with a claw portion 35b protruding inward at the lower end edge portion at a position corresponding to the arm portion 33. The claw at the tip of the claw portion 35b faces downward. Further, claws 35c and 35d are formed vertically on the inner surface of the end of the straight portion 35t. A boss 35e into which a screw 36 (see FIG. 16) is screwed is formed at the end of the straight portion 35t.

Returning to FIG. 17, an insertion hole 34a into which the claw portion 35a is inserted is formed in the inner surface portion 34s. Insertion holes 34b, 34c, 34d into which the claw portions 35b, 35c, 35d are inserted are formed in the inner surface portion 34t. Further, a screw insertion hole 34e is formed in the inner surface portion 34t at a position corresponding to the boss 35e.

As shown in FIG. 19A, the claw portion 35a of the grip cover 35 is locked to the locking portion 34a1 formed in the insertion hole 34a, and the upper end edge portion 34s1 of the inner surface portion 34s of the main body portion 34. Is sandwiched between the upper end edge portion 35s1 of the outer surface portion 35s of the grip cover 35 and the protrusion 35f.

As shown in FIG. 19B, the claw portion 35c of the grip cover 35 is locked by being inserted into the insertion hole 34c from the front to the rear.

As shown in FIG. 19C, the claw portion 35d of the grip cover 35 is locked by being inserted into the insertion hole 34d from the front to the rear. Further, the claw portion 35b of the grip cover 35 is inserted into the insertion hole 34b and locked to the surface of the inner surface portion 34t.

Finally, the screw 36 is inserted into the screw insertion hole 34e and screwed into the boss 35e to fix the grip cover 35 to the main body 34.

Further, when the cover (grip cover 35) is provided on the separate handle 30, the end face of the cover is exposed over the entire circumference as compared with the case where the cover is provided on the handle provided in the vacuum cleaner body, so that the cover is twisted or opened. Generally, it is weak against force, but in the present embodiment, as described above, the separate handle 30 is provided at seven claw portions 35a, 35b, 35b, 35c, 35c, 35d, 35d and two locations. By fastening with screws 36 and 36, it can be strongly fixed against a force in the twisting or opening direction without impairing the design.

The present invention is not limited to the above-described embodiment, and can be appropriately modified without changing the scope of the present invention. For example, in the present embodiment, the case where the vacuum cleaner main body 2 is provided with the cord reel 17 has been described as an example, but the present embodiment may be applied to the vacuum cleaner main body 2 not provided with the cord reel 17.

Further, in the present embodiment, as a cover for concealing the upper case 12, a case where the cover is composed of two parts, a dust case cover 13 and an exhaust cover 14, has been described as an example, but the upper case 12 is concealed when a vacuum cleaner is used. If it is possible (if it cannot be seen from the outside), the dust case cover 13 and the exhaust cover 14 may be composed of one component.

1 Vacuum cleaner 2 Vacuum cleaner body 11 Lower case 12 Upper case 13 Dust case cover (dust collection lid)
13a Outer surface 13c Lock member 13d Inner surface 13f Slit 13g Rib 14 Exhaust cover 14d Exhaust port 15 Electric blower 15g Anti-vibration rubber 16 Case 17 Cord reel 18 Control board 19 Dust collector 22 Paper pack 22b Seal (paper pack lid)

Claims (4)

A vacuum cleaner main body including a dust collector for collecting dust and an electric blower for generating suction force is provided, and the vacuum cleaner main body includes a resin lower case, an upper case covering the upper part of the electric blower, and a vacuum cleaner. In a vacuum cleaner provided with a resin cover that hides at least a part of the upper case at the time of use, an engaging portion is provided on the resin cover, and the deflection of the engaging portion serves as an opening / closing force.
A vacuum cleaner characterized by having a slit in the engaging part. A vacuum cleaner main body including a dust collecting unit for collecting dust and an electric blower for generating suction force is provided, and the vacuum cleaner main body conceals a plurality of cases covering the electric blower and at least a part of the cases. In a vacuum cleaner provided with a resin cover, the resin cover is provided with an engaging portion, and the deflection of the engaging portion serves as an opening / closing force.
A vacuum cleaner characterized by having a slit in the engaging part. A vacuum cleaner main body including a dust collector for collecting dust and an electric blower for generating suction force is provided, and the vacuum cleaner main body includes a resin lower case, an upper case covering the upper part of the electric blower, and a vacuum cleaner. In a vacuum cleaner provided with a resin cover that hides at least a part of the upper case at the time of use, an engaging portion is provided on the resin cover, and the deflection of the engaging portion serves as an opening / closing force.
A vacuum cleaner characterized by having slits on both sides of the engaging part. A vacuum cleaner main body including a dust collecting unit for collecting dust and an electric blower for generating suction force is provided, and the vacuum cleaner main body conceals a plurality of cases covering the electric blower and at least a part of the cases. In a vacuum cleaner provided with a resin cover, the resin cover is provided with an engaging portion, and the deflection of the engaging portion serves as an opening / closing force.
A vacuum cleaner characterized by having slits on both sides of the engaging part.

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