TWI849478B - Electric vacuum cleaner - Google Patents

Abstract

The purpose of the present invention is to eliminate color in an electric vacuum cleaner equipped with an LED that can improve the visibility of garbage. The electric vacuum cleaner is characterized by having: a fan motor that generates attraction; and a suction mouth that sucks up the garbage attracted by the fan motor; and the suction mouth has a plurality of light sources, and the brightness of at least one of the plurality of light sources, especially the plurality of light sources with the same luminous color, is different from that of other light sources with the same color.

Description

Electric vacuum cleaner

The present invention relates to an electric vacuum cleaner.

For example, when vacuuming with an electric vacuum cleaner, the user visually confirms the vacuuming target surface such as the floor or shelf, and collects dust and other garbage. At this time, if the visibility of the garbage observed by the user is low, dust residue will be generated, or the efficiency will be reduced due to vacuuming in places without garbage. Therefore, as a technology for improving the visibility of garbage on the vacuuming target surface, the technology described in Patent Document 1 is known. Patent document 1 describes an electric vacuum cleaner comprising: a suction port having a suction port for sucking in gas containing dust; and a light-emitting diode disposed on the suction port; the light-emitting diode is disposed on the suction port in such a manner that the irradiation range of light emitted from the light-emitting diode and irradiated to the outside of the suction port expands from a direction extending substantially parallel to the ground toward a downward direction when the light-emitting diode is disposed in contact with the suction port or substantially parallel to the ground.

[Prior Art Literature] [Patent Literature]

[Patent Document 1] International Publication No. 2008/035478

In the technology described in Patent Document 1, the illumination range of the LED on the ground is not considered. Therefore, there is a problem that the irradiated light does not fully spread over the vacuumed surface, and the garbage is missed. In addition, it is known that when the ground is illuminated by two-color LEDs of green and white as LEDs, the brightness of white light is higher than that of green, so the green light of the illuminated ground is offset by white, resulting in a problem of clear green and white. It is assumed that the user will feel uncomfortable with the mixing of the two colors during vacuuming due to this situation, and there is a problem that the visibility of garbage is not optimized by using LED light. In the present invention, the purpose is to provide a suction nozzle that emits color-free light to the illuminated ground when the ground is illuminated by a two-color LED of green and white.

The present invention is an electric vacuum cleaner, which is characterized by having: a fan motor that generates attraction; a suction mouth that sucks up the garbage attracted by the fan motor; and the suction mouth has a plurality of light sources, and the brightness of at least one of the plurality of light sources, especially among the plurality of light sources with the same light color, is different from that of other light sources with the same color.

According to the present invention, a suction nozzle of an electric vacuum cleaner and an electric vacuum cleaner equipped with the same can be provided, which can eliminate the color unevenness of LED and efficiently illuminate the ground with light.

0PB: Hue

1: Vacuum cleaner body

2: Dust collection box

3: Rechargeable battery

5: Extension tube

5B: Hue

5BG: Hue

5G: Hue

5GY: Hue

5P: Hue

5PB: Hue

5R: Hue

5RP: Hue

5Y: Hue

5YR: Hue

10: Main body

10B: Hue

10BG: Hue

10G: Hue

10GY: Hue

10P: Hue

10R: Hue

10RP: Hue

10Y: Hue

10YR: Hue

11: Motor housing

12: Handle

20: Suction port body

21: Lower shell

21a: Mounting hole

21t: Recessed part

21u: hole

22: Upper outer shell

22a: convex part

22b: Concave part

22c: Screw hole

22d: Screw hole

22e: Screw hole

22t: Claw

22u: Claw

23: Buffer

24: Unit cover

25: Feet

25a: Extension

25b: Connection part

25c:Wheels

30: Joint

31: Direct management department

32: Rotating joint

32c: Connection part

32d:Through hole

33: Rotating cover

40: Rotating brush

50: Bearing cover

60:LED substrate

60d: incision

60e: Incision

61:LED

62:LED Fixer

63: Lens

63a: Fourth convex part

63b: The third convex part

63d: Second convex part

63e: first convex part

63f~63j: Lens

64: Flow path

64b: Left and right ends

64c: Left and right ends

65b: substrate holding part

65c: Ribs

65d: Limiting protrusions

65e: Ribs

70: Electric motor

80: Control board

120: Brush hair

121a: Screws

121b: Screw

121c: Screws

121d: Screw

400: Suction mouthpiece

1000:Electric vacuum cleaner

6101G:LED

6102W:LED

6103G:LED

6104W:LED

6105G:LED

C1: Hue

D1: Diameter

D2: Diameter

P0: Center

Q: Brush room

S1: Gap

Figure 1 is a side view showing an example of an electric vacuum cleaner.

Figure 2 is a three-dimensional view of the mouthpiece when viewed from above.

Figure 3 is a front view of the nozzle body.

Figure 4 is a three-dimensional view of the mouthpiece when viewed from the bottom.

Figure 5 is a top view showing the state of removing the upper outer shell from the suction nozzle.

Figure 6 is a three-dimensional diagram showing the state of removing the upper outer shell of the self-priming nozzle.

Figure 7 shows a three-dimensional image of the LED substrate.

Figure 8 is a hue ring of the Munsell color system that illustrates the hue of the irradiated light.

Figure 9 is a three-dimensional diagram of the upper outer shell.

Figure 10 is a front view of the upper housing.

Figure 11 is a front view of the lens.

Figure 12 is a top view of the lens.

Figure 13 is a three-dimensional diagram of the LED fixture.

Figure 14 is a front view of the LED holder.

Figure 15 is a top view of the LED fixture.

Figure 16 is a cross-sectional view taken along line XII-XII of Figure 14.

Figure 17 is a top view of the suction nozzle body with the upper outer shell removed.

Figure 18 is a top view showing the back side of the upper housing.

Figure 19 is a bottom view of the nozzle body.

Figure 20 is a cross-sectional view of XXXIV-XXXIV in Figure 3.

Below, the implementation form of the present invention is described with reference to the drawings.

FIG1 is a side view showing an example of a side view of an electric vacuum cleaner using a suction nozzle of the present embodiment. The electric vacuum cleaner 1000 is a cyclone type vacuum cleaner, and is composed of a vacuum cleaner body 1, a dust collecting box (dust collecting device) 2, and a rechargeable battery 3.

The vacuum cleaner body 1 is composed of a body part 10, a motor housing part 11, and a handle part 12. An electric blower (not shown) for generating suction force is housed in the motor housing part 11. An operating switch SW for switching the suction force is provided in the handle part 12.

One end of the extension tube 5 is connected to the connection port of the vacuum cleaner body 1 in a manner that it is connected to the dust box 2 of the vacuum cleaner body 1. In addition, the other end of the extension tube 5 is connected to the suction nozzle body 400. In addition, the extension tube 5 forms a ventilation path (not shown) and has a wiring (not shown) that electrically connects the rechargeable battery 3 to the motor (not shown) for the brush of the suction nozzle body 400. In addition, the extension tube of this embodiment is an extension tube manufactured using a lightweight and strong calculation method of topology optimization technology. As shown in the figure, the visible portion of the extension tube has an irregular concave and convex shape.

In addition, the electric vacuum cleaner 1000 is not limited to the pole-type vacuum cleaner shown in the figure, but can also be applied to power cord-type or cordless electric vacuum cleaners such as handheld vacuum cleaners and barrel-type (cylinder-type) vacuum cleaners.

FIG2 is a three-dimensional view of the nozzle body when viewed from the top. As shown in FIG2, the nozzle body 400 is an electric brush type in which a motor rotates the brush, and is composed of a nozzle body 20 and a joint part 30 freely rotatably connected to the nozzle body 20.

The mouthpiece body 20 is composed of a lower shell 21, an upper shell 22, a lens 63 and a unit cover 24. The lower shell 21, the upper shell 22, the lens 63 and the unit cover 24 are all formed of a synthetic resin material. For example, the lower shell 21 and the upper shell 22 are formed of ABS resin or the like. The lens 63 is formed of acrylic resin. The unit cover 24 is formed of a resin such as glass-containing nylon that is harder than ABS resin. In addition, a buffer portion 23 is provided on the lower shell 21. The buffer portion 23 is formed of an elastic resin and is formed by double molding with the lower shell 21. In this way, the unit cover 24 or the buffer part 23, which is likely to hit the wall when the user vacuums, is made of strong components.

FIG. 3 is a front view of the mouthpiece body. FIG. 3 is a state of the mouthpiece body 400 in the state of FIG. 2 observed from the front. As shown in FIG. 3, the buffer portion 23 is provided on the front side of the lower housing 21 and is formed by extending in the width direction (left-right direction). Moreover, the lower portion of the buffer portion 23 is formed shorter than the width dimension of the mouthpiece body 20. Moreover, the right end of the upper portion of the buffer portion 23 extends to the right end of the lower housing 21, and the left end extends to the unit cover 24.

The upper shell 22 of the nozzle body 20 is formed to be shorter than the lower shell 21 in the left-right direction (width direction). In other words, the nozzle body 20 is constructed in such a way that a portion of the lower shell 21 protrudes from the right end of the upper shell 22, and the unit cover 24 protrudes from the left end of the upper shell 22.

FIG4 is a perspective view of the suction nozzle body when viewed from the bottom. As shown in FIG4, the suction nozzle body 400 is composed of a rotating brush (rotating cleaning body) 40 and a bearing cover 50. The details of the bearing cover 50 will be described later.

The rotating brush 40 is arranged along the left-right direction (width direction) of the suction port body 20 and is rotatably supported in the brush chamber Q. In addition, the rotating brush 40 is continuously arranged from one end side of the left-right direction (axial direction of the rotating brush 40) of the suction port body 20 to the other end side.

Furthermore, the rotating brush 40 has a plurality of brushes such as brushes with different hardness or height, and each brush is arranged in a spiral shape. The joint part 30 is connected to the extension tube 5 (refer to FIG. 1 ) and used in a rod state, or directly connected to the vacuum cleaner body 1 and used in a handheld state. Furthermore, the joint part 30 is composed of a straight tube part 31, a rotating joint part 32, and a rotating outer cover 33.

字形狀。又，車輪25c可旋轉地支持於連接部25b。 In the lower housing 21, a foot portion 25 is formed on the back of the lower housing 21. The foot portion 25 and the lower housing 21 are integrally formed of resin. The foot portion 25 has extension portions 25a, 25a extending rearward from the vicinity of the left and right sides of the rotating joint portion 32, and a connecting portion 25b connecting the rear ends of the extension portions 25a to each other, and is configured as follows in a plan view.

Furthermore, the wheel 25c is rotatably supported on the connecting portion 25b.

In addition, bristles 120 in the shape of the rotating brush 40 are provided behind the rotating brush 40 in the lower housing 21. By providing such bristles 120, dust scraped in from the front by the rotating brush 40 is prevented from flying out to the rear. In addition, the bristles 120 have a rotating shaft (not shown) parallel to the rotating brush 40, and are configured to rotate in the front-rear direction.

FIG. 5 is a top view showing the state of removing the upper shell 22 from the suction port body. FIG. 6 is a three-dimensional view showing the state of removing the upper shell from the suction port body. FIG. 7 is a three-dimensional view of the light source, namely the LED substrate 60. As shown in FIG. 5 and FIG. 6, the lower shell 21 accommodates an LED substrate 60 (wiring substrate) on which LEDs (Light Emitting Diodes: light-emitting diodes) 61, 61 as a plurality of light-emitting elements are mounted. The lens 63 fixed to the upper shell 22 is arranged in front of the LED substrate 60 to form a structure covered from the top. As shown in FIG. 7, the LED substrate 60 has a plurality of LEDs, namely 6101G, 6102W, 6103G, 6104W, and 6015G, in order from the right. In addition, 6101G, 6103G, and 6015G have green luminous colors, and 6102W and 6104W have white luminous colors. That is, from right to left in the left and right direction (width direction) of the suction port 400, they are alternately arranged in the order of green, white, green, white, and green. Moreover, in Example 1, multiple LEDs of green and white colors are lit at the same time, so that the multiple LED colors are mixed and irradiated to the ground. The reason for selecting multiple LEDs of green and white colors is explained.

FIG8 is a hue ring of the Munsell color system (hereinafter referred to as the Munsell color ring) for explaining the hue of the irradiated light. The Munsell color ring is a ring-shaped Munsell color palette with a center P0. In the illustrated example, the ring has 20 hues that divide the circumference into 20 equal parts. The marks on the circumference represent the hue (synonymous with "color"), R means red, Y means yellow, G means green, B means blue, and P means purple. For example, if a light source irradiates a color that is easily absorbed by the dust collection surface, i.e., light of an absorption color, the dust collection surface absorbs the light, so the user can easily see the light reflected by the garbage and can easily confirm the location of the garbage. Therefore, for example, LED 61 irradiates a non-similar color light having a hue belonging to a region other than a region between two hues adjacent to the hue corresponding to the color of the dusted surface among the 20 hues in the Munsell color wheel shown in FIG8 as light of the absorption color of the dusted surface. By irradiating light of a non-similar color, the dusted surface can be easily absorbed by light and reflection can be suppressed, making the garbage more conspicuous, thereby improving the visibility of the garbage. For example, with respect to the hue C1 of the dusted surface, the hues adjacent to the hue C1 among the 20 hues are hue 5YR and hue 10YR. If the area between hue 5YR and hue 10YR including hue C1 is defined as the same color as hue C1 of the vacuumed surface, then the hue of the area other than the same color is irradiated by the light source, that is, light of non-same color. In addition, when irradiating monochromatic light, any one color can be selected from non-same colors, and when irradiating light L of multiple colors, any two or more colors can be selected.

In Example 1, multiple LEDs of green (5G) and white are lit at the same time, so that the multiple LED colors are mixed and irradiated onto the ground.

For example, when the vacuumed surface is a wooden floor, generally speaking, the wood color is close to yellow (5Y) and purple (5P). Therefore, if the light of the hue of the area other than the area between the hue 5Y and the hue 5P is irradiated, for example, the light of the hue between the yellow-green (7.5Y) and the blue (5B), the color difference between the garbage and the vacuumed surface can be increased, which can make the garbage more conspicuous. Therefore, a green LED is provided in Example 1.

Furthermore, in this embodiment 1, among the multiple color LEDs, which are 6101G (green), 6102W (white), 6103G (green), 6104W (white), and 6015G (green) from the right, the current flowing through the central 6103G is more than 30% greater than that flowing through the two end 6101G (green) and 6015G (green). The brightness of the green light in the center increases, while the brightness of the green light at the two ends decreases. When the white LEDs 6102W (white) and 6104W (white) emit light at the same time, the ground light irradiated is better mixed. Therefore, 6103G (green) has a resistor with a different resistance value from 6101G (green) and 6015G (green).

Furthermore, at the rear of the LED substrate 60, a flow path portion 64 (a component forming the flow path) is integrally formed, which constitutes a part of the flow path connected to the joint portion 30.

Furthermore, a motor 70 serving as a driving source for driving the rotating brush 40 is disposed on the lower housing 21. The motor 70 is located at one end side (left side) in the left-right direction. Furthermore, a control substrate 80 for controlling the rotating brush 40 is disposed on the lower housing 21 on the opposite side of the motor 70 in the left-right direction.

FIG9 shows a three-dimensional view of the upper housing, and FIG10 shows a front view of the upper housing 22. As shown in FIG9 and FIG10, the upper housing 22 holds a lens 63. A convex portion 22a is provided on the bottom side of the upper housing 22, and the convex portion engages with the convex portion of the lower housing to fix the upper housing and the lower housing. FIG11 shows a front view of the lens 63, and FIG12 shows a top view of the lens 63. The lens 63 has a first convex portion 63e and a second convex portion 63d on both sides, and the convex portions engage with the concave portions of the upper housing 22, and the lens 63 is fixed to the upper housing 22. Furthermore, as shown in FIG12, the lens 63 also has a third convex portion 63b and a fourth convex portion 63a on the LED side. By means of the third convex portion 63b and the fourth convex portion 63a, the distance between the LED and the lens can be kept close without the LED 61 coming into contact with the lens 63, thereby preventing damage to the LED and stably installing the LED. In addition, the lens 63f is the green lens of the 6101G, the lens 63h is the central green lens of the 6103G, and the lens 63j is the side green LED lens of the 6105G. Furthermore, the lens 63g is the white lens of the 6102W, and the lens 63i is the lens of the 6104w. Therefore, white light is emitted from the lens 63g and the lens 63i, and green light is emitted from the lens 63f, the lens 63h, and the lens 63j. Lenses 63g, 63i, 63f, 63h, and 63j are formed in a cone shape so that the diameter increases from the incident side (rear side) of light toward the irradiation side (front side) of light. Lenses 63f, 63h, and 63j have different lens diameters on the irradiation side (front side) of light from lenses 63g and 63i. That is, the diameter D1 on the irradiation side (front side) of lenses 63f, 63h, and 63j is larger than the diameter D2 on the irradiation side (front side) of lenses 63g and 63i (D1>D2). Therefore, the lens irradiating white light has a lower refractive index, so the degree of light focusing becomes higher. On the other hand, the lens irradiating green light has a smaller radius of curvature than the lens irradiating white light, and the degree of light focusing becomes lower due to the higher refractive index. In other words, the angle of view of lens 63f, lens 63h, and lens 63j irradiating green light is wider than that of lens 63g and lens 63i irradiating white light. In Example 1, since lenses with different angles of view are used in combination, the green light absorbed by the dust collection surface is diffused, and the white light is concentrated and brightened, so that the visibility of the garbage is improved. Furthermore, as mentioned above, since the brightness of the green in the center is increased, it can be more easily mixed with the white, thereby suppressing color unevenness.

FIG. 13 is a three-dimensional view of the LED holder. As shown in FIG. 13 , the left and right ends 64b and 64c of the flow path portion 64 are formed so as to extend downward along the mounting hole 21a of the lower outer shell 21. FIG. 14 is a front view of the LED holder. FIG. 15 is a top view of the LED holder. FIG. 16 is a cross-sectional view taken along the XII-XII line of FIG. 14 . In FIG. 16 , a substrate holding portion 65b for holding the LED substrate 60 is formed. The substrate holding portion 65b is formed into a concave shape in cross-sectional view and is formed by extending in the left-right direction (vertical direction of the drawing paper). In addition, the width of the substrate holding portion 65b in the front-to-back direction has a length for the lower portion of the LED substrate 60 to be embedded. In this way, the LED substrate 60 can be stably held. In addition, a limiting protrusion 65d is formed to limit the movement of the LED substrate 60 in the left-right direction. In addition, the rib 65c of the LED holder is structurally extended upward as much as possible to firmly fix the LED substrate 60. Although the LED substrate is fixed by the rib 65c and the rib 65e, the cutout 60d and the cutout 60e of the LED substrate are now embedded with the rib 65c and the rib 65e of the LED holder 62.

As shown in FIG. 17 , when the joint part 30 is mounted on the lower housing 21 , the connection part 32c is connected to the flow path part 64 . In addition, a gap S1 for introducing air is formed on the left side of the lower housing 21 . If the electric blower of the vacuum cleaner body 1 is driven to generate suction force, air flows from the brush chamber Q (see FIG. 26 ) through the joint part 30 , and at the same time, external air is introduced from the gap S1 . The air introduced from the gap S1 cools the motor 70 and is then introduced into the joint part 30 from the through holes 32d~32g .

FIG. 18 is a top view showing the back side of the upper housing. As shown in FIG. 18, a plurality of recesses 22b serving as material reduction portions are formed at a plurality of locations on the back side of the upper housing 22. By forming the recesses 22b, the upper housing 22 can be made lighter, and the mouthpiece 400 can be made lighter. In addition, the recesses 22b are formed in a long hole shape with a specific width that is longer in the front-rear direction and is formed with a spaced interval in the left-right direction. In this way, the strength against the load that is easily applied to the upper housing from the upper direction is ensured, while the weight reduction is sought.

In addition, screw holes 22c, 22d, and 22e are formed on the back of the upper outer shell 22.

FIG. 19 is a top view of the suction mouth body. As shown in FIG. 19 , the lower shell 21 of the suction mouth body 400 is fixed to the upper shell 22 by screws. Screw insertion holes (not shown) for screws 121a, 121b, and 121c to be inserted are formed in the lower shell 21. The screw insertion holes are formed at positions opposite to the above-mentioned screw holes 22c, 22d, and 22e in the vertical direction.

Screws 121a, 121b, and 121c are inserted from the bottom side of the lower housing 21 to the respective screw insertion holes, and are screwed into and fixed to the screw holes 22c, 22d, and 22e of the upper housing 22.

In addition, a screw fixing portion 121d is provided on the lower housing 21 for fixing the unit cover 24 to the lower housing 21.

FIG20 shows a cross-sectional view of FIG3 taken along line XXXIV-XXXIV. As shown here, the lower housing 21 and the upper housing 22 of the nozzle body 400 are fixed by claw engagement in addition to the screw fixation mentioned above. That is, a claw 22t is formed at the front of the front edge of the upper housing 22, and a claw 22u is formed at the rear edge of the upper housing 22. A recess 21t for the claw 22t to engage is formed at the upper portion of the lower housing 21, and a hole 21u for the claw 22u to engage is formed at the rear portion of the lower housing 21.

20: Suction port body

21: Lower shell

22: Upper outer shell

23: Buffer

24: Unit cover

30: Joint

63: Lens

400: Suction mouthpiece

S1: Gap

Claims (5)

An electric vacuum cleaner is characterized by having: a fan motor that generates attraction; and a suction mouth that sucks up the garbage attracted by the fan motor; and the suction mouth has a plurality of light sources, the plurality of light sources have light sources with different luminous colors, and the light sources with different luminous colors irradiate light at the same time; and the plurality of light sources, especially among the plurality of light sources with the same luminous color, at least one light source has a different brightness from other light sources with the same color. As in claim 1, the electric vacuum cleaner, wherein the plurality of light sources include green and white light sources, and the brightness of the first green light source among the green light sources is higher than that of the other light sources. An electric vacuum cleaner as claimed in claim 2, wherein the first green light source is arranged in a manner to be located at the center of the plurality of light sources. As in claim 3, the electric vacuum cleaner, wherein the green and white light sources are arranged alternately, and the first green light source is arranged in the center. For example, the electric vacuum cleaner of claim 1 to 4, wherein the light source is an LED.