JP2020110505A - Vacuum cleaner - Google Patents

Abstract

To provide a vacuum cleaner that allows for reduction of noise thereof without involving addition of a component.SOLUTION: The vacuum cleaner comprises an electric air blower 15, and a case 16 holding the electric air blower 15, and also comprises a lower case 11 constituting a cleaner body 2, below the electric air blower 15. The lower case 11 comprises an inclined rib 11b becoming lower frontward, and also comprises a sound absorbing material 30 on the inclined rib 11b. Thereby, a flow of air directly toward an exhaust port from a space between the case 16 and the lower case 11 is suppressed by the inclined rib and the sound absorbing material and is caused to bypass inside the cleaner body, consequently noise can be reduced.SELECTED DRAWING: Figure 8

Description

The present invention relates to a vacuum cleaner.

In recent years, there has been a demand for a vacuum cleaner that is small and light in weight and has good operability. On the other hand, there is also a demand for low-noise, low-noise operation, but making the main unit smaller makes it easier for electric blowers and fluid noise to permeate outside, making it difficult to reduce noise. Become.
In the electric vacuum cleaner described in Patent Document 1, an air passage is provided by a partition wall to reduce noise.

JP-A-2-305532

In the structure described in Patent Document 1, noise is reduced by providing an air passage with a partition wall to bypass the inside of the main body, but the number of parts increases, which is disadvantageous in reducing the size and weight of the main body. In addition, there is a possibility that the number of assembling steps will increase and the cost will increase.

Therefore, it is an object of the present invention to provide an electric blower capable of reducing noise without increasing the number of parts.

The present invention has an electric blower, and a cleaner body having a lower case at a lower portion of the electric blower, the lower case having an inclined rib that becomes lower toward the front, and the sound absorption on the inclined rib. It is characterized by having a material.

According to the present invention, it is possible to provide an electric vacuum cleaner that has a small number of parts, is lightweight, and can reduce noise.

It is an appearance perspective view showing the whole vacuum cleaner concerning this embodiment. It is a partially exploded perspective view showing a cleaner body. It is a perspective view showing the state where the dust case cover was opened in the cleaner body. It is a front view of a cleaner body. It is a rear view of a cleaner body. It is a top view of an upper case. It is the figure which expanded the display window part vicinity in the sectional view on the AA line of FIG. It is a longitudinal cross-sectional view of a cleaner body. It is a figure which shows the accommodation state of a cleaner body.

Hereinafter, an embodiment 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 may 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 electric vacuum cleaner 1 includes a cleaner main body 2, a hose 3, an operation pipe 4, an extension pipe 5, a suction tool 6, and the like.

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

FIG. 2 is a partially exploded perspective view showing the cleaner body.
As shown in FIG. 2, the cleaner body 2 is of a so-called paper pack type, and includes a lower case 11, an upper case 12, and a dust case cover 13.

The lower case 11 constitutes the outer contour (appearance) of the lower portion of the cleaner body 2, and is made of a synthetic resin material (not fiber-reinforced) such as PP (Polypropylene) resin. Further, the lower case 11 has a concave portion 11a whose upper portion is opened in a substantially rectangular shape, and has an electric blower 15 that generates a suction force, a case 16 that houses the electric blower 15, a cord reel 17, and an electric blower 15 (see FIG. 8). ) For controlling the control board 18 and the like. Further, the lower case 11 has a dust collecting portion 19 for accommodating 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 of the substantially center in the front-rear direction, and the dust collecting portion 19 is arranged on the front side of the substantially center in the front-rear direction. The electric blower 15 and the cord reel 17 are arranged in the left-right direction, the electric blower 15 is arranged on the right side, and the cord reel 17 is arranged on the left side. The control board 18 is arranged above the case 16 that houses the electric blower 15. An annular lid packing 19a is attached to the upper edge of the dust collecting portion 19. Note that FIG. 3 shows a state in which an unused paper pack 22 is stored.

The upper case 12 has a shape covering the entire upper side of the electric blower 15, the cord reel 17, and the control board 18, and is configured to be fixed to the lower case 11. The upper case 12 is made of a synthetic resin material such as PP (Polypropylene) resin (fiber reinforced). Not). Further, a winding button 23 that is pressed when the power cord 17b (see FIG. 8) of the cord reel 17 is wound is provided on the upper case 12. The take-up button 23 is biased upward by a spring (not shown).

Further, the upper case 12 has a plug outlet 12e from which the connection plug 17c (see FIG. 4) is pulled out.

The dust case cover 13 constitutes a part of the outer contour (appearance) of the upper portion of the cleaner body 2, and mainly opens and closes the upper portion of the dust collecting portion 19. The dust case cover 13 is made of a synthetic resin material (not fiber-reinforced) such as ABS resin. Further, the dust case cover 13 is formed in an upward convex shape by a surface having no irregularities on the outer surface 13a.

FIG. 3 is a perspective view showing a state in which the dust case cover is opened in the cleaner body.
As shown in FIG. 3, a rib 13b protruding along the lid packing 19a of the dust collecting portion 19 is formed on the back surface of the dust case cover 13. Further, on the back surface of the dust case cover 13, there is provided a lock member 13c which is locked by being engaged with the front end of the hose port 21.

A hinge portion 12b that rotatably supports the dust case cover 13 is formed on the upper case 12. The dust case cover 13 is configured to be opened until it is vertically upward.

The dust collecting portion 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 FIG. 7) is stored via the filter 19b.

The hose port 21 is a pipe hook that engages a handle portion 21a that is gripped when carrying the main body and a hook portion 5c (see FIG. 9) provided on the outer pipe 5a of the extension pipe 5 when the main body of the cleaner is stored. The part 21c is integrally formed.

FIG. 4 is a front view of the cleaner body.
As shown in FIG. 4, the pipe hook portion 21c is arranged at the center of the hose port 21 and is composed of a receiving portion 21c1, guide ribs 21c2 and 21c2, holding ribs 21c3 and 21c3, and a bottom rib 21c4. It has an inclination in a direction that intersects with the axis of the hose connection port 21b at the front. Further, a screw insertion hole 21d for fixing the screw to the lower case 11 is formed. A handle cover 24 fixed to the handle portion 21a is provided on the outer periphery of the handle portion 21a in order to improve the ease of grasping the handle and the design. By arranging the pipe hook portion 21c in the center in this way, the accessory can be attached to the center of the main body in the housed state, so that the center of gravity in the housed state is not biased to the left and right, and the stability is improved. You can

In this embodiment, the paper pack type is described as an example, but the present invention can be applied to a cyclone type vacuum cleaner.

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

An exhaust port 11a is formed on the back surface of the lower case 11, has a plurality of slit-shaped holes 11a1, and is arranged in parallel with each other. Further, the exhaust port 11a1 is formed by a through hole having an angle of 10 degrees from the horizontal surface to the upper rear part so that the exhaust gas is exhausted upward. However, the angle is not limited to this.

FIG. 6 is a plan view of the upper case.
As shown in FIG. 6, the upper case 12 has screw insertion holes 12c for screw fixing to the lower case 11, which are formed at the left and right ends of the front end and substantially in the center and at the center of the rear end.

Further, an LED sheet 14 having display windows 14a and 14a for notifying a user of an operation mode and maintenance is attached to the upper case 12 with an adhesive such as a double-sided tape. The display windows 14a, 14a have an elliptical shape and are transparent or medium-printed to allow light to pass therethrough. With such a configuration, the LED display can be visually recognized without disposing the transparent resin component on the display portion, and the weight and cost can be reduced by reducing the number of components.

Further, a cover member 25 that is curved over the entire width of the upper case 12 is attached to a substantially central portion of the upper case 12. Further, a cover sheet 25, which enhances the design, is attached to the cover member 25 over the entire width with an adhesive such as a double-sided tape.

FIG. 7 is a cross-sectional view taken along the line AA of FIG. 6 and is an enlarged view of the vicinity of the display window portion.
As shown in FIG. 7, the control board 18 has light emitting elements 18a, 18a for notifying the user of the operation mode and maintenance. Further, above the upper surface of the upper case 12, tapered cylindrical portions 12, 12 having an opening area gradually increasing from the upper surface of the upper case 12 toward the light emitting elements 18a, 18a extend to the vicinity of the light emitting elements 18a, 18a. The LED sheet 14 is attached so that the display windows 14a and 14a overlap the holes 12a2 and 12a2 on the upper surface of the upper case 12. Here, the taper of the cylindrical portions 12 and 12 does not mean a draft taper required for resin molding, but a taper shape intentionally provided at 3 degrees or more. As a result, the light emitted from the light emitting elements 18a, 18a also illuminates the inner peripheral surfaces 12a1, 12a1 of the cylindrical portions 12a, 12a with the color emitted by the light emitting elements 18a, 18a. The light reflected on 14a becomes darker and more visible, and the visibility from various distances and angles can be improved.

The cover member 25 is arranged between the dust case cover 13 and the outer surface 12d of the upper case, and is fixed to the upper case 12 so as to be on the same surface. As described above, since the dust case cover 13 is rotatably supported by the hinge portion 12 and the rear end of the dust case cover 13 rotates along the track R, a space must be secured inside the track R. If the space is simply opened, the gap L between the dust case cover 13 and the upper case outer surface 12d becomes large, and the designability is impaired. The cover member 25 is provided in order to make them compatible, and it is possible to minimize the gap L while securing the track R.

FIG. 8 is a vertical sectional view of the cleaner body.
As shown in FIG. 8, the electric blower 15 is installed on the holding rib 11c of the lower case on the front side via an annular vibration isolating rubber 15a, and further, by an annular rib 11d, an opening 15c of the electric blower 15 is formed. The dust collection chamber 19 is sealed so as to communicate with each other. Further, the rear side is held by a recess 16a of a synthetic resin case 16 via a vibration-proof rubber 15b. The case 16 is fitted and fixed in the lower case 11. Thus, the vibration of the electric blower 15, which is a source of noise, is damped by the front and rear anti-vibration rubbers and is prevented from directly propagating to the outer shell of the main body.

A plurality of inclined ribs 11b, which become lower toward the front, are arranged on the lower rear side of the case 16. A sound absorbing material 30 that reduces noise is provided below the case 16, and a part of the sound absorbing material 30 is placed so as to ride on the inclined rib 11b. As shown in FIG. 5, there is an exhaust port 11a on the back surface of the lower case 11, and the air exhausted from the electric blower 15 is discharged to the outside of the machine body. Noise can be reduced by suppressing the flow of air directly from between the cases 11 to the exhaust port 11a by the inclined ribs 11b and the sound absorbing material 30 and by bypassing the inside of the main body. The inclined rib may not be provided, and the entire lower surface including the sound absorbing material 30 may be inclined.

As the sound absorbing material 30, polyester urethane foam is used in this embodiment, but other materials may be used depending on the frequency characteristics of the cleaner body. Further, by performing the profile processing in which the surface is provided with the uneven shape, the air flow that collides with the sound absorbing material 30 flows along the surface and is not reflected in the direction of the electric blower so that the air flows do not collide with each other. Can be noisy.

FIG. 9 is a diagram showing a stored state of the main body.
As shown in FIG. 9, the vacuum cleaner body 2 is erected in a state where accessories are connected to the electric vacuum cleaner 1, and the hook portion 5c is engaged with 21c so that the accessories can be stored in a self-supporting state. Become. Further, since the receiving portion 21c2 (see FIG. 4) is inclined, the hook portion 5c can be easily hooked and the height in the stored state can be lowered, so that the operability is improved and the storage is made compact. be able to.

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

In the present embodiment, the case where the light emitting element 18a is integrally formed on the control board 18 has been described as an example, but the light emitting element 18a is formed on a board different from the control board 18. Good.

Further, in the present embodiment, the case where the hook portion 5c is formed in the outer pipe 5a has been described as an example, but the hook portion 5c may be formed in the inner pipe 5b or the suction body 6.

1 Electric Vacuum Cleaner 2 Vacuum Cleaner Main Body 11 Lower Case 12 Upper Case 12a Tube 13 Dust Case Cover (Dust Collection Cover)
14 LED Sheet 14a Display Window 15 Electric Blower 15a Anti-vibration Rubber 15b Anti-vibration Rubber 16 Case 17 Code Reel 18 Control Board 18a Light-Emitting Element 19 Dust Collection Part 20a Wheel 21 Hose Port 21a Handle Part 21b Hose Connection Port 21c Pipe Hook Part 22 Paper pack 23 Wind-up button 24 Handle cover 25 Cover member 26 Kazari sheet 30 Sound absorbing material

Claims (1)

An electric blower, and a cleaner body having a lower case at a lower portion of the electric blower,
The electric blower, wherein the lower case has an inclined rib that becomes lower toward the front, and a sound absorbing material is provided on the inclined rib.

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