JPH06331U - Vacuum cleaner suction body - Google Patents

Abstract

(57) [Abstract] [Purpose] A plurality of air passages, one end of each of which is connected to a plurality of suction ports and the other end of which is connected to a common joint part, are connected to the cleaner body. The dust in the vicinity of the plurality of suction ports is automatically removed from the suction port body of the electric vacuum cleaner that is guided to the cleaner body side through the plurality of air passages. [Configuration] A light emitting diode 19 and a light receiving diode 20 for detecting that dust is clogged in the air passage 12, and the air passage 1
A shutter plate 22 that opens and closes 3 and an electromagnetic solenoid 28 that drives the shutter plate 13 are provided, and when it is detected that the air passage 12 is clogged with dust, the air passage 1
3 is closed by the shutter plate 22. Wind path 1
When 3 is closed, due to the suction force of the cleaner body via the joint portion 17, the dust trapped in the air passage 12 is sucked into the cleaner body, and the dust is removed from the air passage 12. When the air passage 12 is clogged with dust, a buzzer sounds.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a suction port body of an electric vacuum cleaner.

[0002]

[Prior art]

 Conventionally, a suction port body of this type is known as shown in FIG. In the figure, reference numeral 1 is a housing of a suction port body, which is composed of a lower housing 2 and an upper housing 3. Reference numeral 4 denotes a rotating brush, and a support shaft 5 is embedded at both ends thereof. The support shaft 5 is rotatably held by bearings 6 sandwiched by the upper and lower housings 2 and 3.

Reference numeral 7 is a motor sandwiched between the upper and lower housings 2 and 3, and a motor pulley 8 is press-fitted or fixed to one end of a rotation shaft thereof by a screw (not shown) or the like. 4 has a structure in which power is transmitted to the rotating brush pulley 10 formed integrally with the rotating brush pulley 10.

On the other hand, reference numerals 12 and 13 denote a first air passage and a second air passage which are formed by ribs provided upright from the upper and lower housings 2 and 3, and accommodate the motor 7, the belt 9 and the like. It is completely isolated from the belt chamber and other spaces 14 to which wheels (not shown) are attached. Reference numerals 15 and 16 denote a first suction port and a second suction port formed on the side of the lower housing 2, for removing dust on the floor surface (such as Joutan) from the function of the rotary brush 4 described later and the joint portion. It is an opening that effectively collects dust by suction force from a cleaner body (not shown) connected to the 17th and later. Further, as shown in the figure, animal hair, synthetic fiber (nylon) or the like may be bundled into the rotary brush 4 for flocking (the flocked part is indicated by 18), or a rubber blade (not shown) may be fitted therein. , The aim is to scrape out not only the surface of the flexible carpet, but also the dust embedded inside (deep part). Further, as described above, the first intake port 15, the second intake port 16, the first air passage 12, and the second air passage 13 which are independent on the left and right sides are formed, and the left and right end portions including I try to get rid of dust efficiently.

Next, the operation of the above-mentioned suction port body will be described. The operation in an operating state in which the suction port body configured as described above is placed on a carpet or the like and the cleaner body is connected to the joint portion 17 will be described below. When electric power is supplied to the motor 7 and the motor pulley 8 fixed to the rotary shaft rotates, power is transmitted to the rotary brush pulley 10 via the belt 9. The rotary brush 4 integrally formed with the rotary brush pulley 10 has the support shafts 5 at both ends rotatably held by the bearings 6 as described above, so that the rotary brush 4 is supported in one direction against the surface of the carpet. A rotational movement is given.

The dust on the surface of the carpet and inside is scraped up by the movement of the flocked portion 18 and the rubber blade as the rotary brush 4 rotates, and the dust around the first suction port 15 is the first air passage. The dust passing through 12 and around the second suction port 16 passes through the second air passage 13 and is guided to the cleaner body side connected to the joint portion 17 as shown by the hatched arrow. . As described above, since the suction port body of this type is provided with a plurality of, for example, two air passages, the lateral width dimension of the suction port body can be set large (wide), and further the dust collecting force can be increased. It is used in large vacuum cleaners, etc. to make effective use.

By the way, generally, there are various kinds of dust collected by an electric vacuum cleaner at home, and cotton dust, thread dust, hair, etc. accumulated on the back side of furniture pass through the air passages 12 and 13. The behavior when doing is not always within the intended range. For example, if the suction force of the vacuum cleaner body is set to be low and the above dust is sucked for a long period of time, dust is often trapped and accumulated in the air passage 12 as shown in FIG. As a result, the air passage 12 is closed. In this state, dust cannot be collected from the intake port 15, and the floor surface in the range indicated by Y corresponding to the width of the intake port 16 is collected, but the range indicated by X corresponding to the width of the intake port 15 is collected. Dust remains on the floor surface of.

[0008]

[Problems to be solved by the device]

 Conventionally, in order to recover from such a state, there have been problems such as pushing in a thin rod such as a wire or disassembling and removing the suction port body, and it is unsanitary. Further, the dust that has rolled up at the suction ports 15 and 16 may also invade the drive parts such as the belt part and the pulley, causing slipping and heat generation, which may lead to the cutting of the belt. This invention was made in order to compensate for the above-mentioned conventional drawbacks, and as described above, the suction port body of the electric vacuum cleaner capable of automatically removing the dust accumulated and accumulated in the air passage. It is intended to be provided.

[0009]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention has a plurality of suction ports and a plurality of air passages, one end of each of which is connected to the suction port and the other end of which is connected to a common joint. A suction port body of an electric vacuum cleaner, wherein the joint part is connected to a cleaner body so that dust around the plurality of suction ports is guided to the cleaner body side through the plurality of air passages, A dust detection unit that detects that at least one of the plurality of air passages is clogged with dust, a shutter plate that opens and closes at least one air passage other than the one air passage, and the shutter plate The drive means for driving and the air passages other than the air passage in which the dust detection means detects that the dust is clogged are automatically closed by the shutter plate driven by the drive means. In which a control circuit for good sea urchin control that. Further, when the dust detection means detects that the air passage is clogged with dust, a display means may be provided for displaying this.

[0010]

[Action]

 In the suction port body of the electric vacuum cleaner configured as described above, when dust is clogged in the air passage, this is detected by the dust detection means, and the air passage is closed except for the air passage in which the dust is detected. As described above, the shutter plate instructed by the control circuit is driven by the driving means. In this state, the negative pressure obtained by the suction force of the cleaner body through the joint section sucks the dust trapped in the air passage into the cleaner body, and as a result, the dust trapped in the air passage is removed from the air passage. To be removed.

[0011]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. 1 and 2, the same parts as those of FIGS. 5 and 6 used for explaining the conventional example are denoted by the same reference numerals, and detailed description thereof will be omitted. In the figure, reference numerals 19 and 20 denote a light emitting diode and a light receiving diode provided so as to face each other in the middle of the air passage 12, and these constitute a detecting means for detecting that the air passage 12 is clogged with dust. ing. Reference numeral 21 denotes a guide groove provided in the middle of the air passage 13, which is formed on both the lower housing 2 side and the upper housing 3 side as described in the conventional example of FIG. The guide groove 21 is also extended to the other space 14 side, as shown in FIG. A shutter plate 22 is slidably fitted in the guide groove 21.

Reference numeral 23 denotes a joint lever, which is rotatably attached to a support shaft pin 24 fixed to the lower housing 2, and is urged in the direction of arrow B by a tension coil spring 25. Reference numeral 26 denotes a stopper pin fixed to the lower housing 2, which limits the range of rotation of the joint lever 23 in the arrow B direction. A column 27 is fixed to the lower housing 2, and one end of the tension coil spring 25 is hooked. Reference numeral 28 is a known electromagnetic solenoid, which is fixed to the lower housing 2 with screws or the like (not shown). One end of the shutter plate 22 and the movable piece of the electromagnetic solenoid 28 are connected to different ends of the joint lever 23 by link mechanisms 29 and 30 having long holes.

The light receiving diode 20 is connected to the input side of the control circuit 31 shown in FIG. 3, and the electromagnetic solenoid 28 is connected to the output side of the control circuit 31. A buzzer 32 is connected to the output side of the control circuit 31.

In the suction inlet configured as described above, since the air passage 12 is not clogged with dust in a normal operating state, the light receiving diode 20 receives light (infrared ray) from the light emitting diode 19. More than a predetermined amount of light has been received. When a predetermined amount or more of light is received, no drive current is supplied from the control circuit 31 to the electromagnetic solenoid 28, so that the shutter plate 22 opens the air passage 13 as shown in FIG. Therefore, the dust sucked by the suction port body passes through the air passages 12 and 13, respectively, and is guided to the joint portion 17 as indicated by the substantially hatched arrows.

When dust is clogged in the air passage 12 of the suction port body as shown in FIG. 2 to generate a dust lump 11, the amount of light reaching the light receiving diode 20 from the light emitting diode 19 becomes less than a predetermined amount. When the amount of light becomes less than a predetermined amount, a drive current is supplied from the control circuit 31 to the electromagnetic solenoid 28 and the buzzer 32. When a drive current is supplied to the electromagnetic solenoid 28, its movable piece is magnetically attracted, and the joint lever 23 overcomes the biasing force of the tension coil spring 25 and rotates in the direction of arrow C about the spindle pin 24. By this rotation, the shutter plate 22 connected by the link mechanism 29 linearly slides along the guide groove 21, and the air passage 13 is completely closed in the stationary state of this operation. Further, when the drive current is supplied to the buzzer 32, the buzzer 32 sounds and it is displayed that the air passage 12 is clogged with dust.

Even when the air passage 12 is clogged with dust and the air passage 13 is closed as described above, the vacuum cleaner body passes through the joint portion 17 to which the vacuum cleaner body is connected, and is indicated by a double-dotted chain white arrow. Continue to aspirate. Since the air passage 12 is temporarily closed by the dust mass 11 and the air passage 13 is temporarily closed by the shutter plate 22, the air passage leading to the joint portion 17 is in a vacuum state, and the suction ports 15 and 16 are surrounded. The pressure is significantly lower than that of. Since the shutter plate 22 has a robust structure as described above, the dust lumps 11 accumulated in the middle of the air passage 12 are subject to the above pressure difference and are sucked toward the cleaner body side, and the dust lumps 11 are removed. Restored to the original state. Due to this restoration, the amount of light received by the light receiving diode 20 becomes equal to or greater than the original predetermined amount, so the drive current to the electromagnetic solenoid 28 is stopped, and the state shown in FIG. 1 is obtained. Further, when the amount of light received by the light receiving diode 20 exceeds the original predetermined amount, the buzzer 32 also stops ringing.

In the embodiment shown in FIGS. 1 to 3, the air passage 12 is narrower than the air passage 13, and therefore it is assumed that the air passage 12 is easily clogged with dust. However, when the air passage 12 and the air passage 13 are symmetric, the air passage 13 has a light emitting diode and a light receiving diode similarly to the air passage 12, and is a detection unit for detecting that the air passage 13 is clogged with dust. Further, in the same manner as the air passage 13, the shutter plate and an electromagnetic solenoid for driving the shutter plate are also provided in the air passage 12. In this case, in the drive circuit 31, when the air passage 12 is clogged with dust and the amount of light received by the light receiving diode 20 does not reach the predetermined amount as described above, a drive current is supplied to the electromagnetic solenoid 28 to supply the air passage. In addition to closing the shutter plate 22 with the shutter plate 22, when the air passage 13 is clogged with dust and the amount of light received by the light receiving diode on the air passage 13 side does not reach the predetermined amount, the driving current is applied to the electromagnetic solenoid on the air passage 12 side. Is supplied to close the air passage 12 with a shutter plate on the air passage 12 side.

Although the shutter plate 22 is operated by the electromagnetic solenoid 28 in the above embodiment, it may be operated by a motor as shown in FIG. In FIG. 4, 33 is a direct current low speed (gard) motor, 34 is its output shaft, 35 is a cam body, and this cam body 35 is fixed to the output shaft 34 with screws 36. The cam body 35 is provided with a link mechanism 37 at one end thereof and is connected to the joint lever 23 described with reference to FIGS. 1 and 2. The other end of the cam body 35 is extended, and the extending portions actuate limit switches 38 and 39.

When the amount of light received by the light receiving diode similar to that described with reference to FIG. 1 and the like becomes less than a predetermined amount and dust clogging is detected, the state in which the cam body 35 is indicated by a solid line to the motor 33 is shown. From the control circuit 31 similar to the control circuit 31 described with reference to FIG. 3, the cam body 35 and the joint lever 23 move to the state indicated by the chain double-dashed line, and the shutter is released. The plate 22 also moves to the position indicated by the chain double-dashed line to close the air passage. When the cam body 35 moves in this way, the extension portion of the cam body 35 pushes the limit switch 38, and the electric power supplied to the motor 33 is stopped.

When the above-mentioned dust lumps are sucked and the amount of light received by the light-receiving diode exceeds a predetermined amount, the control circuit causes an electric power to rotate the motor 33 in the opposite direction to the arrow D. The cam body 35 and the like return to the state shown by the solid line. As a result, the extending portion of the cam body 35 pushes the limit switch 39, the power supply is stopped, and the shutter plate 22 is also restored to the state shown by the solid line.

In the above-described embodiment, the suction port body provided with two suction ports 15 and 16 and two air passages 13 and 14 has been described, but a suction port body having more suction ports and air channels is also described. This idea can be applied. Further, in the above embodiment, the buzzer 32 is used as the display means, but a lamp may be used instead of the buzzer 32.

[0022]

[Effect of device]

 As described above, according to the present invention, when dust is clogged in the air passage, the other air passages except the air passage in which the dust is clogged are automatically closed, and the initial normal state can be instantly restored. Therefore, the user does not need to use a tool or disassemble the suction port body to remove dust, and is free from unsanitary repair. Further, it is possible to prevent slipping due to adhesion of floating dust to the belt and the pulley, heat generation, smoke generation, and the like, and also to prevent the belt from being cut. As described above, according to the present invention, it is possible to provide a suction port body that is highly reliable over a long period of time, and its expected effect is great.

[Brief description of drawings]

FIG. 1 is a plan view of a suction port body showing an embodiment of the present invention.

FIG. 2 is a plan view of a suction port body showing an embodiment of the present invention, showing a state different from FIG.

FIG. 3 is a block diagram showing an embodiment of the present invention.

FIG. 4 is a plan view of an essential part showing another embodiment of the present invention.

5A and 5B show a conventional example, in which FIG. 5A is a plan view of a suction port body, and FIG.

FIG. 6 is a plan view of a suction port body showing a conventional example, showing a state different from FIG. 5 (a).

[Explanation of symbols]

 11 Dust lumps 12, 13 Air passages 15, 16 Inlet 17 Joint part 19 Light emitting diode 20 Light receiving diode 22 Shutter plate 23 Joint lever 28 Electromagnetic solenoid 31 Control circuit 32 Buzzer 33 Motor 35 Cam body

Claims (2)

[Scope of utility model registration request] 1. A vacuum cleaner comprising: a plurality of suction ports; and a plurality of air passages, one end of each of which is connected to the suction port and the other end of which is connected to a common joint part. In a suction port body of an electric vacuum cleaner, which is connected to a main body so that dust near the plurality of suction ports is guided to the cleaner body side through the plurality of air passages, at least one of the plurality of air passages Dust detection means for detecting dust clogging in one air passage, a shutter plate for opening and closing the air passage except at least the one air passage, a driving means for driving the shutter plate, and the wind A control circuit for automatically closing, by the shutter plate driven by the driving means, air passages other than the air passage in which dust is detected to be clogged by the dust detection means. The suction port of the vacuum cleaner, characterized in that was example. 2. The suction device for an electric vacuum cleaner according to claim 1, further comprising display means for displaying, when the dust detection means detects that the air passage is clogged with dust. Mouth.