CN111802955A

CN111802955A - Electric vacuum cleaner

Info

Publication number: CN111802955A
Application number: CN202010135120.8A
Authority: CN
Inventors: 原田秀行; 大林史朗; 矢吹祐辅
Original assignee: Hitachi Global Life Solutions Inc
Current assignee: Hitachi Global Life Solutions Inc
Priority date: 2019-04-11
Filing date: 2020-03-02
Publication date: 2020-10-23
Also published as: JP2020171515A

Abstract

The invention provides an electric dust collector, which has a blower function with good use convenience, does not increase dust on a cleaned part, and does not need to carry a hose and the like special for the blower function. The vacuum cleaner comprises an electric fan generating suction force and a cleaner body accommodating the electric fan, wherein an exhaust direction steering component capable of switching the exhaust direction between the front direction of the cleaner body and the other directions is arranged at an exhaust port of the cleaner body.

Description

Electric vacuum cleaner

Technical Field

The present invention relates to an electric vacuum cleaner.

Background

Conventionally, there is an electric vacuum cleaner including an electric fan for generating an air flow for sucking dust into a cleaner main body, and a hose or the like is connected to a path for discharging the air flow to the outside of the cleaner main body, and the air is discharged from the hose or the like to realize a blower function.

[ Prior art documents ]

[ patent document ]

[ patent document 1] Japanese patent No. 5636743 publication

Disclosure of Invention

[ problem to be solved by the invention ]

However, as described in patent document 1, there are the following problems: when a hose used for sucking dust is used for the blower function, dust adhering to or accumulated in the hose is blown out, and dust is conversely added to the portion to be cleaned. In order to prevent this, there is a technical problem as follows, such as using a hose dedicated to a blower function: when the blower function is used, the hose dedicated for the blower function must be taken out from a place where the hose dedicated for the blower function is stored, and the like, which is inconvenient to use.

The present invention has been made to solve the above-described problems occurring in the prior art, and an object of the present invention is to provide an electric vacuum cleaner having a blower function with excellent usability, which does not require a hose dedicated to the blower function to be carried instead of adding dust to a portion to be cleaned.

[ solution for solving problems ]

The present invention is characterized by comprising: an electric fan generating an attractive force; and a cleaner body for housing the electric blower, wherein an exhaust direction turning member capable of switching an exhaust direction between a front direction of the cleaner body and a direction other than the front direction is provided at an exhaust port of the cleaner body.

[ Effect of the invention ]

According to the present invention, it is possible to provide an electric vacuum cleaner having a blower function with excellent usability, without increasing dust on a portion to be cleaned, and without carrying a hose or the like dedicated to the blower function.

Drawings

Fig. 1 is a perspective view of an electric vacuum cleaner according to the present embodiment.

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

Fig. 3 is a perspective view showing a state in which the battery is removed from the electric vacuum cleaner of the present embodiment, as viewed obliquely from the rear of the electric vacuum cleaner.

Fig. 4 is a view when viewed along an arrow in the X direction of fig. 2.

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

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

Fig. 7 is a perspective view of the electric vacuum cleaner of the present embodiment with the exhaust port facing to the left.

Fig. 8 is a perspective view of the electric vacuum cleaner of the present embodiment as viewed from below.

Fig. 9 is a sectional view taken along line VI-VI of fig. 5 of embodiment 2.

Fig. 10(a) is a cross-sectional view taken along line V-V of fig. 9, in a case where the blower function is used with the exhaust port 21 directed forward of the cleaner body 1. (b) Is a sectional view taken along line V-V in FIG. 9, in which the air outlet 21 is directed leftward of the cleaner body 1 and the blower function is not used.

Fig. 11(a) is a dimension example of a V-V cross-sectional view of fig. 9 in a case where the blower function is used with the exhaust port 21 directed forward of the cleaner body 1. (b) The dimension is an example of a cross-sectional view taken along line V-V in fig. 9 in a case where the exhaust port 21 is directed leftward of the cleaner body 1 and the blower function is not used.

Fig. 12(a) is a V-V cross-sectional view of fig. 9 of embodiment 3 in the case where the blower function is used with the exhaust port 21 directed forward of the cleaner body 1. (b) Is a cross-sectional view taken along line V-V in FIG. 9 of embodiment 3 in the case where the air outlet 21 is directed leftward of the cleaner body 1 and the blower function is not used.

[ description of reference numerals ]

1: a cleaner main body; 2: a dust box; 3: a battery (power storage device); 10: a main body portion; 10 a: a connection port (suction port); 11: a motor case portion; 12: a handle portion; 20: an exhaust direction turning duct; 21: an exhaust port; 22: a flow path width limiting wall; 23: the exhaust direction steering pipeline is communicated with the opening; 24: a filter member; 40: an electric fan; 50: a main body substrate (control substrate); 100: electric vacuum cleaner

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 drawings as appropriate.

As shown in fig. 2, the electric vacuum cleaner 100 includes a cleaner body 1, a dust box 2 (dust collecting device), and a battery 3 (power storage device).

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

The main body 10 is detachably attached with the dust box 2, and is provided with an inlet pipe 14 (see fig. 4) for sending air containing dust sucked from the connection port 10a into the dust box 2.

The motor case 11 is provided with a motor fan 40 (see fig. 6) and a main body board 50 (see fig. 6). A circular suction port 11a is formed in the front surface of the motor case unit 11, and clean air suctioned by the dust case 2 is sucked into the suction port 11 a.

The grip portion 12 has a grip portion 12a provided on the rear side of the main body portion 10 and formed in a substantially L-shape. The grip portion 12a includes: a1 st grip portion 12a1 linearly extending in the front-rear direction; and a2 nd grip portion 12a2 extending linearly in a substantially vertical direction. The 1 st grip portion 12a1 is located above and in front of the 2 nd grip portion 12a 2. The 2 nd grip portion 12a2 is slightly inclined so that the upper portion is forward in the vertical direction. The 1 st grip portion 12a1 and the 2 nd grip portion 12a2 are formed substantially in the shape of a rod and continuously. In this way, by configuring both the 1 st grip portion 12a1 and the 2 nd grip portion 12a2 to be linear, the user can easily recognize the position of the handle. Further, since the 1 st grip portion 12a1 and the 2 nd grip portion 12a2 are connected so as to be bent at an angle close to a right angle, the hand does not easily slip to the 2 nd grip portion 12a2 when gripping the 1 st grip portion 12a1, and the hand does not easily slip to the 1 st grip portion 12a1 when gripping the 2 nd grip portion 12a 2.

The handle portion 12 is provided with a lock member 13 for locking the battery 3. The lock member 13 is a push button type member, and is swingably supported.

An operation button 12b is provided on the upper surface of the 1 st grip portion 12a1 of the grip portion 12. The operation button 12b is constituted by 3 buttons of "strong", "normal", and "switching", for example.

The battery 3 supplies electric power to the electric fan 40 (see fig. 6) and the like, and is formed of a secondary battery such as lithium ion or nickel hydrogen. The battery 3 has a substantially semi-cylindrical case 3a made of synthetic resin, and is detachable from the main body portion 10 by sliding the case 3a in the front-rear direction.

A lock recess 3g is formed in the rear surface of the case 3a, and the lock member 13 is fitted in the lock recess 3g and locked to the main body 10.

The main body 10 has hanging

portions

10e, 10e hanging from both left and right ends below the grip portion 12. A projecting portion 10f projecting inward is formed on the inner wall surface of the hanging portion 10e so as to extend in the front-rear direction. Here, illustration of the left protruding portion is omitted. Thus, the battery 3 is slid along the

slide rails

3d, 3d from the rear side (rear side) of the cleaner body 1 to the front side to the upper surface side of the protruding portion 10f, whereby the battery 3 is supported by the body portion 10. The rear surface portion 3m of the case 3a of the battery 3 is brought into contact with the rear end surface of the hanging portion 10e, whereby the battery 3 is locked to the body portion 10 by the locking member 13.

Fig. 4 is a view as viewed along an arrow in the X direction of fig. 2.

As shown in fig. 4, the dust box 2 is of a cyclone (cyclone) 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 box portion 11 with the axial direction as the front-rear direction, and has a substantially cylindrical housing portion 2 a. A substantially rectangular inlet port 2b (see fig. 2) connected to the inlet pipe 14 is formed in the upper surface (side surface) of the dust box 2. The air containing dust flowing into the inlet 2b is a swirling air flow, centrifugal force acts on the dust, and the air from which the dust is separated is discharged from the rear (back) of the dust box 2 after the dust is separated from the air in the dust box 2.

In the dust box 2, a filter 5 (see fig. 6) is housed at the rear end in the axial direction of the housing portion 2 a. The filter 5 is pleated to increase the filter area and reduce the pressure loss caused by 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 performance such that a particle trapping rate of 99.97% or more is achieved for particles having a particle diameter of 0.3 μm at a rated air flow rate and an initial pressure loss is 245Pa or less.

A cover 2c is rotatably supported by a hinge portion 2d on the front surface of the dust box 2, and the cover 2c is opened and closed when dust accumulated in the dust box 2 is discarded. 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 as described in japanese patent application laid-open No. 2016-137165.

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

The introduction pipe 14 formed in the main body 10 extends obliquely rearward to the right and then extends downward, and is connected to the inlet 2b (see fig. 2) of the dust box 2. With this configuration, a swirling air flow is generated in the housing portion 2a of the dust box 2, and separation of dust can be performed effectively by centrifugal force.

The width of each of the dust box 2 and the battery 3 is slightly shorter than the width W of the main body 10. In other words, the dust box 2 and the battery 3 are configured not to protrude from the side surface of the main body 10. With this configuration, even when the user holds the electric vacuum cleaner 100 with either one of the left and right hands to perform cleaning, the user can smoothly move the electric vacuum cleaner 100 in the front-rear direction, and the usability can be improved.

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

As shown in fig. 6, the motor case portion 11 of the main body portion 10 houses a motor fan 40. In the motor case portion 11, a main body board 50 (control board) for controlling the cleaner main body 1 is housed below the electric fan 40.

The electric fan 40 is disposed laterally so that the rotary drive shaft 40a faces the front-rear direction. The air discharged from the electric fan 40 flows toward the main body substrate 50 disposed below the electric fan 40 as indicated by an arrow 41, and cools the main body substrate 50.

The main body substrate 50 includes an upper substrate 50a and a lower substrate 50b arranged in 2 layers in the vertical direction, and various components are mounted mainly on the surfaces (the lower surface of the upper substrate 50a and the upper surface of the lower substrate 50 b) facing each other. Almost all of the air discharged from the electric fan 40 flows so as to cool the components (heat generating components) disposed opposite to each other on the respective main substrates 50. The main body board 50 is covered with a flame-retardant resin case 51, and the air (air) discharged from the electric fan 40 flows from the rear side to the front side in the resin case 51, flows into the exhaust direction turning duct 20 from the lower side of the bottom surface of the resin case 51 through the exhaust direction turning duct communication port 23, and is discharged from the exhaust port 21.

The exhaust direction turning duct 20 is attached to the main body 10 so as to be rotatable about an axis Q shown in fig. 6 and 8, and the direction of the exhaust port 21 can be changed about the axis Q as shown in fig. 7. When the exhaust direction is turned toward the duct 20 in the direction of fig. 1 and the exhaust port 21 is directed toward the front of the cleaner body 1, the air (air) discharged from the electric fan 40 is discharged toward the front of the cleaner body 1, and functions as a blower for blowing away dust in front of the cleaner body 1. At this time, since the air (air) discharged from the electric fan 40 is air from which dust is removed by the dust box 2, the dust at the cleaning target portion is not increased.

Next, when the exhaust direction is turned to the duct 20 in the direction of fig. 7 and the exhaust port 21 is directed to the left of the cleaner body 1, the air (air) discharged from the electric fan 40 is discharged to the left of the cleaner body 1, and it is possible to prevent the dust at the cleaned part from being blown away unintentionally.

In this way, the use/non-use of the blower function can be switched by changing the direction of the exhaust direction by the duct 20 without carrying a hose or the like dedicated to the blower function.

In fig. 7, the exhaust port 21 is directed leftward of the cleaner body 1, but when the exhaust port 21 is directed rightward, the exhaust port is directed rightward of the cleaner body 1. In this way, the left-right direction of the exhaust gas can be freely changed, and therefore, the exhaust gas can be prevented from directly hitting the user regardless of whether the user is right-handed or left-handed.

Next, fig. 9 shows a sectional view taken along line VI-VI of fig. 5 according to embodiment 2 of the present invention, and fig. 10 shows a section V-V of fig. 9. Fig. 10(a) shows a case where the blower function is used with the exhaust port 21 directed forward of the cleaner body 1, and fig. 10(b) shows a case where the blower function is not used with the exhaust port 21 directed leftward of the cleaner body 1. In this case, the exhaust port 21 may be directed rightward of the cleaner body 1 as before.

The flow path width regulating wall 22 is provided in the duct 20 so as to be turned from the main body 10 to the exhaust direction, and the dimensions are set so that L1 > L2 and L3 > L1/2, the exhaust flow path width when the exhaust port 21 is directed forward of the cleaner body 1 (fig. 10(a)) is L2, the exhaust flow path width when the exhaust port 21 is directed leftward or rightward of the cleaner body 1 (fig. 10(b)) is L1, and when the blower function is used with the exhaust port 21 directed forward of the cleaner body 1, the blower can be configured so that the exhaust flow path width is reduced and the exhaust flow rate is increased, and when the blower function is not used with the exhaust port 21 directed leftward or rightward of the cleaner body 1, the exhaust flow path width is increased and the exhaust flow rate is reduced, thereby preventing peripheral articles from being unintentionally blown away.

Fig. 11 shows examples of the sizes of L1, L2, and L3. Fig. 11(a) shows a case where the blower function is used with the exhaust port 21 directed forward of the cleaner body 1, and fig. 11(b) shows a case where the blower function is not used with the exhaust port 21 directed leftward of the cleaner body 1. In this case, the exhaust flow path width when the blower function is used is reduced to 15/47 ≈ 0.32 times as compared with the case where the blower function is not used, whereby a powerful blower that increases the exhaust flow rate to 47/15 ≈ 3.1 times can be configured.

Next, fig. 12 is a sectional view taken along line VI-VI of fig. 5 according to embodiment 3 of the present invention. Fig. 12(a) shows a case where the blower function is used with the exhaust port 21 directed forward of the cleaner body 1, and fig. 12(b) shows a case where the blower function is not used with the exhaust port 21 directed leftward of the cleaner body 1. By providing the filter member 24 in addition to the front opening (dimension L2) of the flow path width regulating wall 22, a strong blower can be configured in which the exhaust flow velocity is increased when the blower function is used with the exhaust port 21 directed to the front of the cleaner body 1, and the exhaust flow velocity can be decreased when the blower function is not used with the exhaust port 21 directed to the left or right of the cleaner body 1, and the exhaust gas can be cleaned by the filter member 24.

The present invention is not limited to the above-described embodiments, and various modifications can be made.

Claims

1. An electric vacuum cleaner, comprising:

an electric fan generating an attractive force; and

a cleaner body for housing the electric fan,

the vacuum cleaner main body has a suction port for sucking air containing dust and an exhaust port for discharging the sucked air, and the exhaust port is provided with an exhaust direction turning member capable of switching an exhaust direction between a direction in front of the vacuum cleaner main body and a direction other than the front direction.

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

the exhaust direction turning member is configured to make an exhaust flow path area when the exhaust direction is the front of the cleaner body smaller than an exhaust flow path area when the exhaust direction is other than the front of the cleaner body.

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

the filter member is provided to prevent the exhaust air from passing therethrough when the exhaust direction is in front of the cleaner body and to allow the exhaust air to pass therethrough when the exhaust direction is other than in front of the cleaner body.