CN111436856A

CN111436856A - Electric vacuum cleaner

Info

Publication number: CN111436856A
Application number: CN201910823299.3A
Authority: CN
Inventors: 山谷辽; 伊藤则和; 伊藤贤宏; 矢野将; 佐藤叶登
Original assignee: Hitachi Global Life Solutions Inc
Current assignee: Hitachi Global Life Solutions Inc
Priority date: 2019-01-17
Filing date: 2019-09-02
Publication date: 2020-07-24
Anticipated expiration: 2039-09-02
Also published as: CN111436856B; JP2020110507A; TW202027668A

Abstract

The invention provides an electric dust collector which can realize miniaturization. The electric vacuum cleaner comprises a cleaner body (1) and an electric fan (40) which is accommodated in the cleaner body (1) and generates suction force, wherein the electric fan (40) comprises a motor (40a), a rotating blade (40b) rotationally driven by the motor (40a) and a rotating blade shell (40d) arranged around the rotating blade (40b), the cleaner body (1) and the electric fan (40a) are supported by an elastic component A (40e), and at least one part of the elastic component A (40e) and the rotating blade shell (40d) are formed into a whole.

Description

Electric vacuum cleaner

Technical Field

The present invention relates to an electric vacuum cleaner.

Background

Patent document 1 discloses a structure in which an electric blower is sandwiched between 2 elastic members.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2018-34038

Disclosure of Invention

Technical problem to be solved by the invention

In the electric vacuum cleaner disclosed in

patent document

1, 2 elastic members are required to support the electric blower. Therefore, the size of the electric vacuum cleaner becomes large, and there is a drawback that the electric vacuum cleaner cannot be downsized.

Accordingly, an object of the present invention is to provide a vacuum cleaner that can be downsized.

Means for solving the problems

In order to solve the above-described problems, the present invention includes a cleaner body and an electric fan housed in the cleaner body and generating suction force, the electric fan including a motor, a rotary blade rotationally driven by the motor, and a rotary blade case provided around the rotary blade, the cleaner body and the electric fan being supported via an elastic member a, the elastic member a and the rotary blade case being formed of one member.

Effects of the invention

According to the present invention, a vacuum cleaner that can be miniaturized can be provided.

Technical problems, configurations, and effects other than those described above will be apparent from the following description of the embodiments.

Drawings

Fig. 1 is a perspective view showing a state in which an electric vacuum cleaner according to an embodiment of the present invention is housed in a support base.

Fig. 2 is an exploded view of an electric vacuum cleaner according to an embodiment of the present invention.

Fig. 3 is a side view of the electric vacuum cleaner in the state of fig. 2, as viewed from the left side.

Fig. 4 is a perspective view of an electric vacuum cleaner according to an embodiment of the present invention.

Fig. 5 is a plan view of an electric vacuum cleaner according to an embodiment of the present invention.

Fig. 6 is a sectional view taken along line VI-VI of fig. 5.

Fig. 7 is an enlarged sectional view of the periphery of a release button of the electric vacuum cleaner according to the embodiment of the present invention.

Fig. 8 is an enlarged sectional view of the periphery of a release button of the electric vacuum cleaner according to the embodiment of the present invention.

Fig. 9 is a side view of the electric vacuum cleaner according to the embodiment of the present invention, as viewed from the right side.

Fig. 10 is a side view of the electric vacuum cleaner according to the embodiment of the present invention, as viewed from the left side.

Fig. 11 is a cross-sectional view taken along line XI-XI of fig. 10.

Fig. 12 is a sectional view taken along line XII-XII of fig. 10.

Fig. 13 is a plan view of a state in which an accessory is connected to the electric vacuum cleaner according to the embodiment of the present invention.

Fig. 14 is a perspective view showing a support base of an electric vacuum cleaner according to an embodiment of the present invention.

Fig. 15 is a side view showing an electric vacuum cleaner and a support base according to an embodiment of the present invention.

Fig. 16 is a diagram showing a mode of use in a vacuum cleaner in a stick state for cleaning a floor in the vacuum cleaner according to the embodiment of the present invention.

Fig. 17 is a diagram showing a usage mode of the electric vacuum cleaner in a stick state in the electric vacuum cleaner according to the embodiment of the present invention when cleaning a high place.

Fig. 18 is an exploded view of a portion supporting a motor fan in the electric vacuum cleaner according to the embodiment of the present invention.

Fig. 19 is an enlarged sectional view of a portion supporting a motor-driven fan in the electric vacuum cleaner according to the embodiment of the present invention.

Description of the reference numerals

1 vacuum cleaner main body

2 dust box (dust collecting device)

3 accumulator

10a connection port (suction port)

14 introduction tube

40 electric fan

40a motor

50 circuit board

50a circuit board receiving space.

Detailed Description

Hereinafter, a mode for carrying out the present invention (hereinafter, referred to as "embodiment") will be described in detail with reference to the accompanying drawings as appropriate.

Fig. 1 is a perspective view showing a state in which the electric vacuum cleaner of the present embodiment is housed in a support base.

As shown in fig. 1, the electric vacuum cleaner 100 is a device that can be changed to various modes of use, such as a hand-held (ハンディ) state and a stick (スティック) state, to perform vacuum cleaning. The support stand 70 for housing the electric vacuum cleaner 100 is a member that houses the electric vacuum cleaner 100 in a rod-like state in which the extension pipe 300 (attachment) and the standard suction port 400 (attachment) are connected to each other, and is configured to include a base portion 71 and a holder portion 72. The electric vacuum cleaner 100 can be used by being connected to a small suction port (attachment), a broom-type suction port (attachment), an extension hose (attachment), and the like, all of which are not shown. Further, the standard mouthpiece 400 is a mouthpiece of an electric brush type in which a brush is rotated by a motor.

Fig. 2 is an exploded view of the electric vacuum cleaner of the present embodiment. Fig. 2 and the following drawings show the front, rear, left, right, and up and down directions as appropriate when viewed from the cleaner body 1.

As shown in fig. 2, the electric vacuum cleaner 100 includes a cleaner body 1, a dust box 2 (dust collecting device), a battery 3, and an airtight holding member 90.

The cleaner body 1 includes a body 10, a motor housing 11, and a handle 12.

The main body 10 is formed with a connection port 10a (suction port) to which the extension pipe 300, the standard suction port 400 (see fig. 1), and the like are connected. The connection port 10a is molded from the same resin as the main body 10, the motor housing 11, the handle 12, and the like. The connection port 10a has a substantially circular opening and is formed to face forward. The connection port 10a can be connected to the extension tube 300, the standard suction port 400, the small suction port (not shown), the broom-type suction port (not shown), and the like (hereinafter, these may be collectively referred to as "additional members") as accessories. The connection port 10a is provided with a terminal (not shown) electrically connected to the circuit board 50 (see fig. 6), and when the connection port is connected to a motor-driven accessory such as the standard suction port 400, the brush is rotated by the motor through electrical connection.

The main body 10 is detachably attached with the dust box 2, and has an inlet pipe 14 (see fig. 3), and the inlet pipe 14 sends air containing dust sucked from the connection port 10a into the dust box 2.

The motor housing 11 encloses an electric fan 40 (see fig. 6) and a circuit board 50 (see fig. 6). A circular suction port (not shown) through which clean air collected by the dust box 2 is sucked is formed in the front surface of the motor housing 11.

The grip portion 12a includes a first grip portion 12a1 extending linearly and gradually becoming higher toward the rear side as the front-rear direction becomes larger, and a second grip portion 12a2 extending linearly in the substantially vertical direction, and the second grip portion 12a2 of the grip portion 12a extends substantially downward from the rear end of the first grip portion 12a1, the first grip portion 12a1 is located at a position on the front side of the second grip portion 12a2, the second grip portion 12a2 is inclined to the upper side toward the front side with respect to the vertical direction, and the first grip portion 12a1 and the second grip portion 12a2 are formed substantially in a rod shape and continuously, and thus, the first grip portion 12a1 and the second grip portion 12a2 are both configured in a linear shape, so that the position where the user can easily recognize, and the first grip portion 12a1 and the second grip portion 12a2 are not easily connected to the first grip portion 3612 a, and therefore, when the first grip portion 12a is bent at a angle is not easily changed to the second grip portion 3612 a 9612 a, the second grip portion 9612 a is easily moved to the second grip portion 9612 a.

The first grip portion 12a1 extends to become gradually higher toward the rear side in the front-rear direction. Therefore, the hand can be easily inserted into the gap 12c (see fig. 6).

Further, an operation button 12b is provided on the upper surface of the first grip portion 12a1 of the handle portion 12. The operation buttons 12b include, for example, 3 buttons of "strong", "normal", and "off".

Release buttons

18a and 18b that are operated when an accessory such as the extension pipe 300 is removed are provided at the upper front end and the upper rear end of the main body 10. By pressing the

release buttons

18a and 18b, the lock between the main body 10 and the accessory can be released, and the accessory can be detached from the main body 10. The mechanism of the

release buttons

18a and 18b will be described later.

Further, the airtight holding member 90 can be attached to the distal end of the main body 10. The airtight holding member 90 has a substantially circular cylindrical body 91. The cylindrical body 91 has an elastic portion 91a formed of soft resin in an annular shape on the distal end side. The cylindrical body 91 has a connecting portion 91b formed of a material harder than the elastic portion 91a and connectable to the main body 10 at the proximal end. The cylindrical body 91 is formed by integrally forming 2 members of different types, i.e., the elastic portion 91a and the connecting portion 91 b. The elastic portion 91a is made of an elastically deformable (flexibly deformable) material such as an elastic body. By attaching the airtight holding member 90 to the connection port 10a of the cleaner body 1, the entire distal end 90s of the airtight holding member 90 is brought into close contact with the floor, and the suction force can be increased as compared with the case where there is no close contact. Further, by forming the connection portion 91b of a hard material, the airtight holding member 90 can be attached in a stable state without falling off the main body 10.

In the present embodiment, the case where the elastic portion 91a is formed of an elastic material such as an elastomer is described as an example, but the present invention is not limited to this. For example, the cylindrical body 91 may be formed substantially entirely of the same material as the connecting portion 91b, and short bristles of electrostatic flocking may be provided annularly at the tip end of the cylindrical body 91. The member provided with the electrostatic flocking can bring the tip of the airtight holding member 90 into close contact with the floor, as with the elastic member, and can improve the suction force.

An elongated fitting groove 10b is formed in the longitudinal direction on the outer side surface of the connection port 10a of the body 10. The fitting groove 10b is formed with 1 piece on each of the left and right sides. A projection (not shown) that is engaged and locked by the engagement groove 10b in a concave-convex manner is formed at the root end of the connection portion 91 b.

In addition, a light emitting element may be provided on the body 10 above the connection port 10 a.

The battery 3 is a device for supplying electric power to a motor 40a (see fig. 6) of the electric fan 40 that generates suction force, and is composed of a secondary battery such as a lithium ion battery or a nickel hydrogen battery. The battery 3 has a substantially semi-cylindrical case 3a made of synthetic resin, and the case 3a is attached to and detached from the body 10 by sliding in the front-rear direction.

Fig. 3 is a side view of the electric vacuum cleaner 100 in the state of fig. 2 as viewed from the left side.

As shown in fig. 3, the dust box 2 is of a traveling dust separation type, and has a function of separating air containing dust sucked from the inlet pipe 14 into dust and air, and collecting the dust. The dust box 2 is disposed in front of the motor housing 11 so that the axial direction is the front-rear direction, and has a substantially cylindrical housing portion 2 a. A substantially rectangular inlet 2b (see fig. 2) is formed in the upper surface (side surface) of the dust box 2 so as to be in contact with the inlet pipe 14. The air containing dust flowing into the inlet 2b becomes a swirling flow, centrifugal force acts on the dust, the dust is separated into dust and air in the dust box 2, and the air from which the dust is separated is discharged from the rear (back) of the dust box 2.

The cover 2c, which is opened and closed when removing dust accumulated in the dust box 2, is rotatably supported on the front surface of the dust box 2 via a hinge 2 d. Further, a cover locking mechanism 2e for releasing the locking of the cover 2c is provided on the upper portion of the cover 2 c. The mechanism inside the dust box 2 can be configured based on japanese patent application laid-open No. 2016 and 137165.

Fig. 4 is a perspective view of the electric vacuum cleaner of the present embodiment.

As shown in fig. 4, in the electric vacuum cleaner 100, the dust box 2 is attached to the lower side of the main body 10 and the front side of the motor housing 11. In this case, when the dust box 2 is attached to the cleaner body 1, the cover lock mechanism 2e is hidden on the cleaner body 1 side. This is because, when the cover lock mechanism 2e is provided on the opposite side (outside), the cover lock mechanism 2e may be released (unlocked) during dust collection, and malfunction can be prevented by hiding the cover lock mechanism 2e on the cleaner body 1 side. For example, when the lower side of a sofa or a bed is cleaned in a pole-type state, the cleaner body 1 may be horizontally brought close to the floor. At this time, when the cover lock mechanism 2e is provided on the front side, the cover lock mechanism 2e may come into contact with the floor and be released. The positions of the cover lock mechanism 2e and the hinge portion 2d are not limited to this, and may be provided on the cleaner main body 1 in the left-right direction.

The dust box 2 is detachably provided with a maintenance brush 2s (see fig. 2 and 3). The maintenance brush 2s is disposed at a position where it is difficult to see from the outside when the dust box 2 is attached to the cleaner body 1. Therefore, the maintenance brush 2s is not easily detached during operation, and it is not necessary to store the maintenance brush in a place different from the electric vacuum cleaner 100.

Fig. 5 is a plan view of the electric vacuum cleaner of the present embodiment.

As shown in fig. 5, the connecting portion 91b of the airtight holding member 90 has extending portions 91b1, 91b1 formed on both left and right sides thereof and extending rearward. A concave portion 91b2 is formed between the left extending portion 91b1 and the right extending portion 91b1 in a plan view. The concave portion 91b2 is fitted into the front end portion 10d1 of the protruding portion 10d formed on the front end upper surface of the main body 10. Thereby, the positions of the airtight holding member 90 in the front-rear direction and the left-right direction with respect to the connection port 10a (see fig. 2) are determined.

The introduction pipe 14 formed in the main body 10 is formed so as to extend obliquely rightward and rearward and then extend downward, and is connected to the inlet 2b (see fig. 2) of the dust box 2. This can generate a swirling flow in the housing 2a of the dust box 2, and can efficiently separate dust by centrifugal force.

Fig. 6 is a sectional view taken along line VI-VI of fig. 5. As shown in fig. 6, the motor case 11 of the main body 10 houses a motor fan 40. The electric blower 40 is driven by a motor 40 a. In the motor case 11, a circuit board 50 (circuit board) for controlling the cleaner body 1 is housed above the electric fan 40.

Further, the electric fan 40 and the circuit board 50 are arranged to overlap in the vertical direction. Therefore, the size of the cleaner body 1 in the front-rear direction can be reduced. In the electric blower 40, the motor case 11 is formed so as to bulge toward the handle 12, and the size of the body 10 in the front-rear direction (overall length) can be reduced.

In addition, the motor-driven fan 40 and the circuit board 50 are located below the first grip portion 12a1 of the handle portion 12. Thus, when the user grips the first grip 12a1 and operates it, the center of gravity of the electric vacuum cleaner 100 is located in the vicinity below the first grip 12a 1. Therefore, when the electric vacuum cleaner 100 is used with the front portion thereof facing upward, the electric vacuum cleaner 100 can be stably held.

Further, a gap 12c for inserting a hand is formed between the first grip portion 12a1 and the upper surface 11c of the motor case 11. Further, a gap 12d is formed between the second catch portion 12a2 and the back surface 11d of the motor case 11.

In addition, the thickness T1 of the first grip portion 12a1 is formed to be thin, and the thickness T2 of the second grip portion 12a2 is formed to be thicker than the thickness T1. That is, the first grip 12a1 is formed to be thin, and the second grip 12a2 is formed to be thick. In this way, when dust is sucked by gripping the second grip 12a2, the second grip 12a2 can be easily gripped deeply and the strength can be increased by increasing the thickness T2 of the second grip 12a 2.

The battery 3 may be formed of, for example, a lithium ion battery with high energy efficiency. The battery 3 is disposed below the second grip portion 12a2 of the handle portion 12. Since the center of gravity of the handle portion 12 is located closer to the second grip portion 12a2 by providing the battery 3 at the rear end of the electric vacuum cleaner 100 in this manner, the user can feel a comfortable feeling when the electric vacuum cleaner 100 is used with the front portion facing upward.

The airtight holding member 90 is formed such that a tip (tip surface) 90s is inclined so as to recede from the upper portion toward the lower portion, so that the tip 90s is substantially parallel to the dust suction surface when the second end portion 12a2 is defined as an end portion. The dust box 2 is located rearward with respect to the surface R2 passing through the front end 90 s. Thus, even when the tip 90s of the airtight holding member 90 is brought into contact with a floor such as a floor material (floating), the dust box 2 can be prevented from colliding with the floor.

In the dust box 2, a filter 5 is housed at the rear end in the axial direction of the housing portion 2 a. The filter 5 is a member formed by folding in a pleated manner, and can increase the filter area and reduce the pressure loss due to the filter 5.

The filter 5 is, for example, a High-density HEPA filter (High Efficiency Particulate air filter). The HEPA filter is an air filter having a particle trapping rate of 99.97% or more with respect to particles having a particle diameter of 0.3 μm at a rated air flow rate and having a performance of an initial pressure loss of 245Pa or less.

As shown in fig. 6, the dust box 2, the motor 40a, and the battery 3 are arranged on a straight line in the longitudinal direction (front-rear direction) of the cleaner body 1. In particular, the dust box 2 is disposed coaxially with the motor 40a in the longitudinal direction (front-rear direction) of the electric vacuum cleaner 100. The arrangement of the motor 40a and the battery 3 requires a large space. However, since the motor 40a, the battery 3, and the dust box 2 are arranged on a straight line, the vertical size of the vacuum cleaner 100 can be reduced, and the vacuum cleaner 100 can be made compact.

In fig. 6, an air flow of air drawn into the electric vacuum cleaner 100 is indicated by an arrow F. The air drawn into the dust box 2 enters the electric fan 40. The air passes around the motor 40a to cool the motor 40 a. Part of the air passing through the motor 40a flows through the battery 3, thereby cooling the battery 3. The other part of the air passing around the motor 40a and the air passing through the battery 3 are merged at the circuit board 50, cool the circuit board 50, and then are discharged outside the system of the vacuum cleaner 100.

In this case, since the battery 3 is disposed immediately behind the motor 40a, the cooling air is easily made to flow in the battery 3. This enables the battery 3 to be efficiently cooled.

A circuit board housing space 50a for housing the circuit board 50 is provided in the housing above the motor 40a behind the introduction pipe 14. In order to generate a swirling flow in the dust box 2, the inlet pipe 14 must be formed in the front portion of the vacuum cleaner 100, and thus the front portion of the vacuum cleaner 100 has a certain thickness in the vertical direction. Therefore, even if the circuit board housing space 50a is formed so that the housing of the vacuum cleaner 100 has a certain thickness in the vertical direction, the thickness of the entire vacuum cleaner 100 in the vertical direction is not thick. Therefore, when the circuit board 50 is housed in the circuit board housing space 50a, it is not necessary to provide a separate space for housing the circuit board 50, and thus an increase in the vertical thickness of the vacuum cleaner 100 can be suppressed.

In this case, since the arrangement position of the circuit board 50 is high, the connection lines between the circuit board 50 and the connection ports 10a having the connection terminals connected to the accessories and the operation buttons 12b can be shortened. Therefore, the manufacturing cost of the vacuum cleaner 100 can be reduced by shortening the connecting line and improving workability in manufacturing.

Fig. 7 and 8 are enlarged sectional views of the periphery of the

release buttons

18a and 18 b. Even if any one of the

release buttons

18a and 18b is pressed, the connection state between the attachment such as the extension pipe 300 and the standard suction port 400 and the cleaner main body 1 can be released. Fig. 7 shows a state where neither of the

release buttons

18a and 18b is pressed. In this state, first, when the release button 18a is pressed, the release button 18a and the base end portion 18a1 thereof are inclined forward and downward. This releases the predetermined lock mechanism and allows the attachment to be detached from the cleaner body 1.

On the other hand, as shown in fig. 8, when the release button 18b is pressed, the release button 18b and the proximal end portion 18b1 thereof are inclined forward and downward. An elongated shaft-like member 18c is disposed between the base end portion 18a1 of the release button 18a and the base end portion 18b1 of the release button 18 b. Since the proximal end portion 18b1 of the release button 18b is inclined forward and downward, the proximal end portion 18b1 pushes one end of the shaft-like member 18c forward. Thus, the shaft-like member 18c moves in the forward direction, and the other end portion thereof presses the proximal end portion 18a1 of the release button 18a, so that the release button 18a and the proximal end portion 18a1 thereof are inclined forward and downward. As a result, as shown in fig. 8, the predetermined lock mechanism can be released, and the airtight holding member 90 can be detached from the cleaner body 1.

A release button 18b is provided in addition to the release button 18a, whereby the user of the electric vacuum cleaner 100 can operate the release button 18b to detach the accessory from the cleaner body 1 in a state of holding the first grip portion 12a 1.

Fig. 9 is a side view of the electric vacuum cleaner as viewed from the right side.

The lower rear end of the dust box 2 and the lower front end of the cleaner body 1 are provided with attachment/

detachment mechanisms

2g and 19 for attaching/detaching the dust box 2 to/from the cleaner body 1. That is, when the dust box 2 is attached to the cleaner body 1, the attachment/detachment mechanism 2g is connected to the attachment/detachment mechanism 19 by a predetermined mechanism. The attachment/

detachment mechanisms

2g and 19 extend to the lowermost part of the electric vacuum cleaner 100, and particularly, the lower end of the attachment/detachment mechanism 19 is the lowermost part of the electric vacuum cleaner 100, and a foot part 19a is provided below the attachment/detachment mechanism 19. Further, a leg portion 3n is also provided at the lower end of the rearmost portion of the battery 3.

When the electric vacuum cleaner 100 is placed on the horizontal plane F with the lower side of the electric vacuum cleaner 100 down, heavy components such as the motor 40a and the battery 3 may be present in the lower rear portion of the electric vacuum cleaner 100, and the electric vacuum cleaner 100 may be supported on the horizontal plane F by the

leg portions

19a and 3 h. At this time, since the leg 19a is located at the lowermost end of the electric vacuum cleaner 100 and the leg 19a is located at the middle position in the longitudinal direction of the electric vacuum cleaner 100, the electric vacuum cleaner 100 placed on the horizontal plane F is inclined upward in the front direction as shown in fig. 9. Therefore, the distal end of the connection port 10a serving as the suction port is also directed obliquely upward. Therefore, the tip 90s of the airtight holding member 90 also faces obliquely upward. Therefore, in the state where the electric vacuum cleaner 100 is supported on the horizontal plane F, dust remaining inside the connection port 10a and the airtight holding member 90 is less likely to be scattered to the outside.

As shown in fig. 9, the battery 3 can be charged by connecting a terminal t provided on the right side portion of the cleaner body 1 to an AC adapter, not shown.

Fig. 10 is a side view of the electric vacuum cleaner of the present embodiment as viewed from the left side.

Fig. 11 is a cross-sectional view taken along line XI-XI of fig. 10.

In the housing structure of the electric vacuum cleaner 100, the housing 20 covering the motor 40a and the circuit board 50 is a non-flammable one case. Since the motor 40a and the circuit board 50 are not covered with the 2-layer or 3-layer housing structure, the electric vacuum cleaner 100 can be made lightweight.

Fig. 12 is a sectional view taken along line XII-XII of fig. 10.

As shown in fig. 12, the battery 3 is an assembled battery, and 5 electric cells 3h (battery cells) are arranged in a housing 3a so as to be arranged 2 in the vertical direction and in the horizontal direction, and 1 is also arranged in the center. By orienting the axial direction of the cell 3h in the front-rear direction in this manner, the size of the battery 3 can be reduced as compared with the case where the axial direction of the cell 3h is oriented in the left-right direction.

The cell 3h is housed in the case 3a in a state where it is held by a holding member 3j made of synthetic resin. The holding member 3j is configured to be able to form a gap 3k between the upper cell 3h and the lower cell 3 h.

By forming such a gap 3k, air can be made to flow around each cell 3h, and each cell 3h can be cooled efficiently.

Fig. 13 is a plan view of the electric vacuum cleaner with the attached accessory attached.

As shown in fig. 13, the electric vacuum cleaner 100 is configured such that the extension pipe 300 can be connected in a state where the airtight holding member 90 is connected to the cleaner main body 1, and thus, even in a state where the cleaner main body 1 is connected to the airtight holding member 90, the position of the connection port 10a to which the extension pipe 300 is connected does not change, and therefore, the total length L after the cleaner main body 1, the extension pipe 300 and the standard suction port 400 are connected can be suppressed to be short, and therefore, the standard suction port 400 is positioned close to the body, and therefore, the handling is convenient and the usability can be improved.

In the electric vacuum cleaner 100 shown in fig. 13, even when the extension pipe 300 to which the standard suction port 400 is connected is detached from the pole-type state and is held in the hand, the state in which the air-tightness holding member 90 is attached to the cleaner body 1 can be maintained. Therefore, dust can be sucked with the suction force increased.

In the embodiment of fig. 13, the case where the extension pipe 300 and the standard suction port 400 are connected to the electric vacuum cleaner 100 is described as an example, but the present invention is not limited to this embodiment. For example, the connection port 10a can be directly connected to the standard suction port 400, and used as the vacuum cleaner 100 in a hand-held state. This improves the airtightness between the electric vacuum cleaner 100 and the floor by the airtight holding member 90, thereby improving the suction force.

In this manner, in the vacuum cleaner 100, various accessories (additional members) can be attached and detached in a state where the airtight holding member 90 is attached to the cleaner body 1, and the use mode of dust collection can be quickly switched to perform dust collection. Further, since the airtight holding member 90 can be held in the state of being attached to the cleaner body 1, the vacuum cleaner 100 in the hand-held state in which the airtight holding member 90 is attached can perform dust collection while securing a high suction force.

Fig. 14 is a perspective view showing a support base of the electric vacuum cleaner. The support stand 70 shown in fig. 14 is in a state where the electric vacuum cleaner 100 and all the accessories (additional components) are removed. As shown in fig. 14, the support table 70 includes a base portion 71 and a bracket portion 72.

The base portion 71 has a substantially rectangular placement surface 71a on which the standard suction port 400 (see fig. 1) can be placed. The placement surface 71a is provided with a locking portion 71a1 that locks the mouthpiece 400 to prevent it from sliding forward.

The holder 72 extends vertically upward from a holder support portion 71b provided behind the mounting surface 71 a. An engaging portion 72a is provided at an upper front portion of the holder support portion 71 b.

Fig. 15 is a side view showing the electric vacuum cleaner and the support base.

As shown in fig. 15, the electric vacuum cleaner 100 is supported by the support base 70 in a state where the extension pipe 300 and the standard suction port 400 are connected to the cleaner main body 1, and specifically, a hook 301 of substantially L shape having a lower end is provided at the front end of the extension pipe 300, and then, the hook 301 is engaged with an engaging portion 72a (fig. 14) of a holder portion 72 provided in the support base 70, and further, the standard suction port 400 is engaged with an engaging portion 71 a1. provided on the placement surface 71a, whereby the entire electric vacuum cleaner 100 can be supported by the support base 70 so that the cleaner main body 1 side is an upper side and the standard suction port 400 side is a lower side.

In this way, since the electric vacuum cleaner 100 can be set in the bar-type state on the support stand 70, the electric vacuum cleaner 100 can be used in the bar-type state in a standing state when performing the next cleaning.

The placement surface 71a of the base portion 71 is formed to extend forward of the extension pipe 300. Accordingly, the standard suction port 400 can be supported on the mounting surface 71a in a state where the extension pipe 300 is connected to the standard suction port 400, that is, in a state where the extension pipe 300 and the standard suction port 400 are connected to the cleaner body 1 (a lever-type state). Therefore, the electric vacuum cleaner 100 can be stably supported by the support base 70.

Fig. 16 is a view showing a mode of use when a vacuum cleaner in a stick-type state is used to clean a floor.

Fig. 16 is the following case: the vacuum cleaner 100 (with the airtight holding member 90 attached) is connected to the extension pipe 300 and the standard suction port 400, and the vacuum cleaner 100 is set in a pole-type state, and the vacuum cleaner 100 is protruded forward from the user to clean the floor. In this case, the user can move the electric vacuum cleaner 100 forward and backward to perform cleaning while gripping the second grip portion 12a2 of the handle portion 12. Although not shown, when the electric vacuum cleaner 100 is positioned on both left and right sides of the user to clean the floor, the user can move the electric vacuum cleaner 100 forward and backward while gripping the first gripping portion 12a1 of the handle portion 12 to clean the floor. In this way, when the user sucks the dust on the floor, the position of the handle 12 can be changed to suck the dust する.

Fig. 17 is a view showing a mode of use when a high place is cleaned by the electric cleaner in the stick-type state.

However, in the vacuum cleaner having the center of gravity located on the front end side in the stick-type state (see japanese patent application laid-open No. 2016-.

Therefore, in the present embodiment, as shown in fig. 17, the electric blower 40 (see fig. 6), which is a heavy object of the electric vacuum cleaner 100, and the battery 3, etc., are located at positions close to the handle portion 12 (positions close to the wrist), and therefore the center of gravity G of the electric vacuum cleaner 100 is close to the wrist of the user. Accordingly, when the electric vacuum cleaner 100 is set in the stick-type state and the electric vacuum cleaner 100 is raised from the floor to perform dust collection, dust collection is facilitated and usability can be improved. In fig. 17, the case of cleaning a step is described as an example, but it is also effective to lift the electric vacuum cleaner 100 to clean a panel or the like of an indoor unit of an air conditioner.

When the electric vacuum cleaner 100 is used in a stick-type state, the extension pipe 300 and the standard suction port 400 are detached from the electric vacuum cleaner 100 and held in a hand when dust remaining in a corner (corner) of a step is removed. In this case, since the state in which the airtight holding member 90 is attached to the electric vacuum cleaner 100 can be maintained, dust can be sucked with the suction force increased, and dust can be prevented from remaining after suction.

Fig. 18 is an exploded view showing a portion of the motor case 11 that supports the electric fan 40. Fig. 19 is an enlarged view of a portion supporting the electric fan 40 in fig. 6.

The electric blower 40 includes a motor 40a, a rotary blade 40b, a stationary blade 40c, and a rotary blade case 40 d. The motor 40a is fixed to the fixed blade 40c by a screw, and the rotary blade case 40d is fixed by 3 claw portions 40d 2. The rotary blade 40b is fixed to the shaft 40a1 of the motor 40a by a nut 40a 2. An opening 40d1 is provided substantially at the center of the rotary blade shell 40d, and air passing through the dust box 2 is sucked through the opening 40d 1.

The electric fan 40 is supported by the motor case 11 via an elastic member a40e and an elastic member 40 f. The elastic member 40f is held so as to be inserted into the protrusion 40c1 provided on the fixed blade 40c, and can be attached to the groove 11b of the motor case 11. By holding the fixed blade 40c, even if the outer shell of the motor 40a is formed of metal and becomes high in temperature due to heat dissipation, the elastic member 40f is not in direct contact with the elastic member 40f, and therefore, the elastic member 40f can be formed of resin which is inexpensive in manufacturing and easy to mold.

In the present embodiment, the elastic member a40e is formed integrally with the rotary blade case 40d of the electric fan 40, and the surface a40e1 of the elastic member a40e is supported by the rib a11A1 on the inner side of the motor case cover 11a to suppress vibration in the vertical and horizontal directions, and the surface B40e2 is supported by the rib B11a2 to suppress vibration in the front-rear direction, and the airtightness between the rotary blade case 40d and the motor case cover 11a is ensured, whereby the entire suction force of the electric fan 40 can be transmitted to the suction port 10a of the cleaner body 1. Further, the above-described effects may be achieved, and for example, the elastic member a40e may be configured to be integrated with at least a part of the rotary blade shell divided into a plurality of parts.

The elastic member B40g is provided inside the rotary blade shell 40d so as to abut against the fixed blade 40 c. This ensures airtightness between the fixed blade 40c and the rotary blade shell 40d, and transmits all of the suction force generated by the rotary blade 40b and the fixed blade 40c to the opening 40d1 of the rotary blade shell 40 d.

In the present embodiment, the elastic member a40e and the elastic member B40g are formed integrally with the rotary blade shell 40d by double molding (japanese: double molding). This eliminates the need to mount them as separate components, and therefore, the main body can be miniaturized and the manufacturing cost can be reduced.

The present invention is not limited to the above-described embodiments, and various modifications may be made. For example, the above-described embodiments are described in detail to facilitate understanding of the present invention, and are not necessarily limited to the devices having all the configurations described above.

Claims

1. An electric vacuum cleaner, comprising:

a cleaner main body; and

an electric fan which is housed in the cleaner body and generates suction force,

the electric blower includes a motor, a rotary blade rotationally driven by the motor, and a rotary blade case provided around the rotary blade,

the cleaner main body and the electric fan are supported by an elastic member A,

the elastic member a is formed integrally with at least a part of the rotary blade shell.

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

the rotating blade shell is formed by double forming.

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

the electric fan includes a stationary blade for rectifying air around a rotating blade driven to rotate, and the rotating blade case and the stationary blade are supported via an elastic member B, which is formed of one member with the rotating blade case.

4. The electric vacuum cleaner of claim 3, wherein:

the elastic member a and the elastic member B are integrally formed.