JP2009153570A - Suction nozzle for cleaner and vacuum cleaner using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction nozzle for a cleaner for removing many allergic substances floating within 30 cm from the floor surface in the living space. <P>SOLUTION: The suction nozzle for the cleaner includes a suction chamber 9 whose lower surface is opened; a first intake 23 opened on the upper surface of the suction nozzle 1; a communication path 24 which connects the suction chamber 9 and the first intake 23; a second intake 22 disposed in the middle of the communication path 24; a shielding body 26 for opening/closing the first intake 23 and the second intake 22; and a spring 28 for energizing the shielding body 26 in the direction of closing the first intake 23. With this structure, the allergic substances above the suction nozzle 1 are sucked into the suction chamber 9 together with outside air via the communication path 24. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a suction tool that is used by being connected to a vacuum cleaner, in particular, having a structure for sucking outside air at the top.

  Conventionally, this type of suction tool sucks dust in the air from the upper part of the suction tool by providing a number of holes in the upper part of the suction tool (see, for example, Patent Document 1). Moreover, although the objective is different, there also exists that the valve body act | operates by the suction from the upper part of a suction tool and the negative pressure (for example, refer patent document 2).

FIG. 8 shows a conventional suction tool described in Patent Document 1. As shown in FIG. As shown in FIG. 8, the suction tool 101 includes a suction chamber 102 having a lower opening, a front body 103 that is installed in the suction tool 101 and covers the upper portion of the suction chamber 102, and a large number of micro holes 104 that are formed in the front body 103. It is configured.
JP-A-4-58925 JP-A-11-89765

  However, in the configuration described in the above-mentioned conventional patent document 1, a minute hole is provided directly in the upper portion of the suction chamber constituting the outer shell of the suction tool, but this minute hole is always open, Due to the short distance between the chambers, allergens such as dust that cannot be completely sucked may be re-released from the suction chamber. Further, in the configuration described in Patent Document 2, the shield provided on the upper part is opened and closed by the suction air, so that when the suction air is exhausted, it is suppressed that the dust in the suction chamber is released most, Since it is configured to hold the open state only with the wind and there is no means to hold the open state, the open state is unstable when the air volume varies depending on the air volume alone, and the suction port opens and closes during the cleaning operation. For example, the suction from the upper part cannot be stably performed.

  This invention solves the said conventional subject, and it aims at providing the suction tool which can improve the removal effect of the allele substance which floats a lot within 30 cm from the floor surface in the living space. .

  In order to solve the conventional problems, the suction tool of the present invention includes a suction chamber having an opening on a lower surface, a suction port for communicating with the suction chamber and connected to a suction path of a cleaner body, and a suction tool. A first suction port opened on an upper surface, a communication path communicating the suction chamber and the first suction port, a second suction port provided in the middle of the communication path and communicating with the suction chamber, A shield that opens and closes the first suction port; and a biasing member that biases the shield toward the side of closing the first suction port. The shield is generated in the cleaner body. Moving to the opening side of the first suction port by the suction force generated in the communication path by suction air, and maintaining the open state of the shield by the suction force generated in the second suction port by the suction air It is characterized by.

  Thereby, the negative pressure generated by the operation of the cleaner body is applied to the suction chamber, and the negative pressure also affects the communication path. By the negative pressure in the communication path, wind sucked from the first suction port communicating with the outside air is generated, and the shield that has closed the first suction port is opened. Thereby, the allele substance in the upper part of the suction tool is sucked into the suction chamber through the communication path together with the outside air. Similarly, a negative pressure is generated at the second suction port to try to take in outside air. At that time, the second suction port is closed by opening the shield. Since a negative pressure is generated from the second suction port to hold the shield in an open state like a suction cup, the shield can be stably held in the open state. From the above, the outside air containing the allele substance flowing in from the first suction port acts to prevent the backflow from the suction chamber through the communication path. Further, since the shielding body can be reliably kept open by the second suction port, the outside air flowing from the first suction port can be stabilized.

  The suction tool of this invention can improve the removal effect of the allele substance which floats many within 30 cm from the floor surface in the living space.

  The first invention includes a suction chamber having an opening on the lower surface, a suction port for communicating with the suction chamber and connecting to the suction path of the cleaner body, a first suction port opened on the upper surface of the suction tool, A communication path that communicates the suction chamber and the first suction port, a second suction port that is provided in the middle of the communication path and communicates with the suction chamber, and a shield that opens and closes the first suction port And a biasing body that biases the shield toward the side of closing the first suction port, and the shield is a suction force generated in the communication path by suction air generated in the cleaner body. The cleaner main body moves to the side of opening the first suction port, and maintains the open state of the shield by the suction force generated in the second suction port by the suction air. Negative pressure generated by operation is applied to the suction chamber, and the negative pressure also affects the communication path. It is. By the negative pressure in the communication path, wind sucked from the first suction port communicating with the outside air is generated, and the shield that has closed the first suction port is opened. As a result, the allele substance on the upper part of the suction tool is sucked into the suction chamber together with the outside air via the communication passage, and can be sucked back from the suction chamber without being released again. Similarly, a negative pressure is generated at the second suction port to try to take in outside air. At that time, the second suction port is closed by opening the shield. Since a negative pressure is generated from the second suction port to hold the shield in an open state like a suction cup, the shield can be stably held in the open state.

  According to a second aspect of the invention, in particular, in the first aspect of the invention, the shield is formed in a flat plate shape, and when the first suction port is opened, the back surface of the shield closes the second suction port and maintains the open state. The special structure for maintaining the open state of the shield is not necessary, and the second suction port is configured in the vicinity of the suction port, so that it is the most negative pressure source. The effect of holding the shield can be increased by opening it in a close place.

  The third invention is characterized in that, in particular, in the second invention, the opening is provided in front of the suction chamber, whereby the flow of the suction air of the allergen substance from the first suction port “first Of the suction port → communication path → opening → suction chamber → suction port → communication tube, the flow after the suction chamber is the flow of dust suction air from the floor surface `` outside air → suction chamber → suction port → communication tube '' Since they can be matched, the flow of the suction air is unidirectional in the suction chamber, and the dust collection ability can be improved.

  The fourth invention is characterized in that, in particular, in the third invention, the first suction port is formed obliquely downward toward the front, and the communication path is configured obliquely downward toward the front. Thus, when the suction tool is moved forward, the outside air before the shield flows into the first suction port according to the first suction port opened obliquely, and conversely, when the backward movement is performed, the outside air is the first air. Since it becomes easy to enter from the suction port toward the communication path configured obliquely in the forward direction, the action of sucking outside air can be improved.

  In a fifth aspect of the present invention, in particular, in any one of the second to fourth aspects, the communication path is formed by a top surface of an upper member that forms an upper outline of the suction tool and a lower member that forms a suction chamber, and is shielded. Since the body is rotatably held by the holding portion extending from the top surface of the lower member, the positional relationship accuracy can be ensured, so that the back surface of the shield body and the first surface when the first suction port is opened The adhesion accuracy with the suction port 2 can be easily ensured.

  6th invention is the vacuum cleaner provided with the suction tool for vacuum cleaners of any one invention of 1st-5th invention especially, and can provide the vacuum cleaner which can attract | suck allergen substance.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this invention is not limited by this embodiment.

(Embodiment 1)
FIG. 1 is an external perspective view of the vacuum cleaner according to Embodiment 1 of the present invention, FIG. 2 is a plan view of the suction tool of the vacuum cleaner according to the embodiment, and a state where a small nozzle of the suction tool is separated. FIG. 3 is a top plan view showing a state in which the upper member of the suction tool in the embodiment is removed, FIG. 4 is a central sectional view of the suction tool in the same embodiment, and FIG. Fig. 6 is a cross-sectional view of the main part of the suction tool in the embodiment, Fig. 6 is a cross-sectional view of the main part when the suction tool in the embodiment is opened, and Fig. 7 is a perspective view showing the middle member and the shield of the suction tool in the embodiment. It is.

  As shown in FIG. 1, an electric motor 7 is provided inside the vacuum cleaner main body 4, and a dust chamber 8 for collecting dust is formed on the front surface of the electric motor 7. In addition, the suction tool 1, the extension pipe 5, the hose 6, and the dust collection chamber 8 communicate with each other in an internal space so as to form a series of connections.

  As shown in FIG. 2A, a small suction tool 2 is arranged behind the suction tool 1, and is configured to be separable from the suction tool 1 as shown in FIG. A communication pipe 3 is provided behind the small suction tool 2 so as to be rotatable left and right and up and down. The small suction tool 2 is provided with a suction portion (not shown) for sucking dust so as to function as a cleaning tool alone, and communicates with the suction tool 1 when the suction tool 1 is mounted. A portion (not shown) is provided at the tip, and communicates with the communication pipe 3. An extension pipe 5 and a hose 6 are connected to the rear end face of the communication pipe 3 so as to be connected to the electric vacuum cleaner main body 4.

  Further, a suction chamber 9 opened downward is configured in front of the suction tool 1. The external appearance of the suction tool 1 is formed by constituting an upper member 10 that forms the upper part and a suction chamber 9 and a lower member 11 that forms the bottom side of the suction tool 1. Moreover, the center of the lower member 11 is cut off, and an intermediate member 12 having a convex shape is configured so that the small suction tool 2 provided in a detachable manner can be attached. A hole is formed in the convex portion at the center of the middle member 12 to form a suction port 13, which is connected to the communication portion of the small suction tool 2. Accordingly, the communication pipe 3 and the suction chamber 9 are communicated with each other when the small suction tool 2 is mounted on the suction tool 1. The ceiling and the front and rear walls of the suction chamber 9 are provided with the lower member 11 recessed, and a part of the rear wall of the suction chamber 9 and a part of the ceiling are formed by the middle member 12.

  In addition, two rotary brushes 14 (a first rotary brush 14 a and a second rotary brush 14 b) provided along the longitudinal direction of the suction tool 1 are provided inside the suction chamber 9. The first rotating brush 14a and the second rotating brush 14b are pivotally supported in the vicinity of the left and right walls of the lower member 11, and are rotatably provided. In the rear part of the suction tool 1, a drive source chamber 15 and a circuit chamber 16 are formed on the left and right with a portion in which the small suction tool 2 is housed. A small electric motor 17 is provided. The power of the small motor 17 is transmitted by stretching the belt 18 with the first rotating brush 14a, and the direction of rotation on the cleaning surface side is directed from the front to the rear as indicated by the arrow of the first rotating brush 14a. When driven, the cleaning piece 38a disposed on the first rotating brush 14a abuts against the cleaning piece 38b of the second rotating brush 14b to transmit the driving force, so that the second rotating brush 14b performs the first rotation. It is comprised so that it may rotate in the reverse direction to the brush 14a.

  The circuit chamber 16 is provided with a circuit 36 that receives electric power from the electric vacuum cleaner body 4 and supplies electric power to the small electric motor 17. The circuit 36 includes means for detecting the load state of the small motor 17, and a load detection means 19 such as a positive star is provided as a general element. Moreover, the drive stop means 20 which stops the small electric motor 17 when the suction tool 1 is lifted from the floor surface is also provided. The drive stop means 20 is configured by a combination of a limit switch 20a and a floor surface detection unit 20b that mechanically detects the floor surface.

  The middle member 12 has a concave portion 21 that is formed in a concave shape when viewed from the suction chamber 9 so as to be higher on the upper member 10 side than the ceiling portion of the suction chamber 9. A second suction port 22 opened in the direction is provided. The second suction port 22 is provided in the longitudinal direction at the left and right equal positions around the suction port 13 according to the longitudinal direction of the suction tool 1. Further, there is a space between the ceiling of the suction chamber 9 and the upper member 10, and this space is provided as the communication path 24. The communication passage 24 is surrounded by a ceiling portion of the suction chamber 9 and a side wall lowered substantially vertically from the upper member 10 so as to include the second suction port 22, and is provided inside the suction tool 1 as an independent space. ing. A first suction port 23 having an opening above the upper member 10 is provided in the vicinity of the recess 21 so that the communication path 24 communicates with the outside air. In addition, this 1st suction port 23 is formed in the rectangle extended in the width direction of the suction tool 1, and has comprised the front side low.

  Moreover, the opening part 25 is provided in the ceiling part of the suction chamber 9 in the vicinity which forms with a front wall so that it can connect with the inside of the suction chamber 9 near the communication wall 24 and the front wall vicinity of the suction chamber 9. A plurality of openings 25 are provided in the longitudinal direction of the suction tool 1 so as to fit within the width of the communication passage 24, so that the opening area is about 50% or more with respect to the first suction port 23. . The second suction port 22 is provided in the middle of the communication passage 24 and the suction chamber 9, and communicates with the suction chamber 9 at a position closer to the suction port 13 than the opening 25.

  The first suction port 23 is closed with a shield 26 when the electric motor 7 is not operating. The shield 26 holds the rotation shaft 27 at a location corresponding to the upper surface of the recess 21 of the middle member 12. The rotating shaft 27 is pivotally supported by a pair of left and right holding portions 28 in the longitudinal direction of the middle member 12. The shield 26 and the rotation shaft 27 are provided integrally, and the rotation shaft 27 is extended so as to form a substantially L shape at a location where it hits both ends of the rear portion of the shield 26. The shield 26 is formed in a flat plate shape, and when the first suction port 23 is operated to be opened, the second suction port 22 is closed by the back surface of the shield 26. Therefore, the front wall of the recess 21 is configured to be inclined so as to match the maximum angle at which the shield 26 is opened. When not in use, a spring 37 as an urging member is attached to one end of the rotating shaft 27 so that the shield 26 can be held at the closing operation position.

  The spring 37 is attached between a first attachment seat 29 provided at one end of the rotation shaft 27 and a second attachment seat 30 provided on the middle member 12 at a position facing the first attachment seat 29. . The second mounting seat 30 is formed in a box shape so as to completely cover the spring 37. Further, either one of the left and right ends of the second mounting seat 30 is open so that the spring 37 can be attached, and the open portion is configured to be closed with a rib formed from the upper member 10 or the like. . It should be noted that the appearance surface of the shield 26 on the side of the rotating shaft 27 has a part of the appearance surface that is recessed so that it can be seen when viewed from above the suction tool 1 when the shield is opened. The part 32 is fitted.

  The rotation shaft 27 is prevented from coming off by being pressed by the holding portion 28 from the left and right. Further, the space between the holding portions 28 of the rotating shaft 27 is spoken from above the concave portion 21 so as to have a space of about 0.5 mm. In addition, the support part 31 which supports the rotating shaft 27 from the bottom is comprised in the position equally divided into three about the rotating shaft 27, and some of the support parts 31 have the shaft diameter on the front surface and the rear surface. It is set up to hold more than half a circle.

  About the suction tool comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, a power source is connected to the electric vacuum cleaner main body 4, and an operation state is set by operation of an operation switch (not shown), whereby the electric motor 7 is activated and negative pressure is generated on the front surface of the electric motor 7. The suction pressure is generated by the negative pressure. The suction air reaches the suction tool 1, and a negative pressure is normally generated toward the lower surface of the suction tool 1. The suction tool 1 and the cleaning surface are in contact with each other, so that dust on the cleaning surface is absorbed by the suction tool 1. Will suck. In the configuration of this embodiment, the negative pressure inside the suction tool 1 is the negative pressure inside the suction chamber 9, and the negative pressure affects the opening 25 and the second suction port 22. First, the communication path 24 also has a negative pressure through the opening 25, and the shield 26 operates to take in outside air. When a negative pressure exceeding the spring 37 is generated, the shield 26 opens, and the first suction port 23 is opened to take in outside air.

  On the other hand, when the shield 26 is opened, the inner surface of the shield 26 is along the front wall of the recess 21 and is attracted and held open by the negative pressure generated at the second suction port 22. (Shown in FIG. 6). As a result, the outside air that flows in from the first suction port 23 flows into the suction chamber 9 together with the allele substance that floats most in the vicinity of about 30 cm, and is sucked in through the communication passage 24 so as to flow backward from the suction chamber 9 side. Dust can be collected reliably without worry.

  Further, since the shield 26 is adsorbed and held from the second suction port 22, even if the suction air is reduced to a certain extent, the opening can be reliably held in an open state, so that it can be stably collected. Further, the second suction port 22 is installed in the vicinity of the suction port 13, so that it can easily generate a force exceeding the spring 37 by receiving the influence of the negative pressure, and can maintain the open state reliably. Yes. In the state where the shield 26 is opened and held, the upper surface wall of the shield 26 is inclined obliquely downward from the rear to the front, so that air can be smoothly introduced into the communication path 24. . And when operating the suction tool 1 back and forth for cleaning, when the suction tool 1 is moved forward, the outside air in front of the shield 26 flows into the first suction port 23 according to the shield 26 and vice versa. When the vehicle is moved backward, the outside air has a shape that tends to enter the first suction port 23, and the action of sucking the outside air can be improved.

  Next, when the electric motor is stopped, the negative pressure of the suction tool 1 is reduced, and the shield 26 is closed by the force of the spring 37 being won. There is a possibility that some allele material remains inside the communication passage 24 by positively introducing outside air containing the allele material, and when the vacuum cleaner body 4 is used and stored. Since the communication path 24 is provided as an independent space inside the suction tool 1, it can be stored in a sanitary manner without being scattered elsewhere in the suction tool 1. This residue can be collected together with the outside air during the next operation.

  In addition, since the shielding body 26 is held by the holding portion 28 provided in the intermediate member 12, the positional accuracy with respect to the second suction port 22 can be ensured. The contact with the suction port 22 can be reliably performed, and the open state can be stably maintained.

  In addition, the allele material sucked from the first suction port by using two rotary brushes is not adhered to the floor, but is dusted together with the dust sucked from the floor, and is swept up at the center of the rotary brush and passed through the suction port 13. It can be reliably collected in the main body.

  As described above, the vacuum cleaner suction tool and the vacuum cleaner using the same according to the present invention can improve the removal effect of allergen substances that float a lot within 30 cm from the floor surface in the living space. Therefore, the present invention can be applied to products such as a product that has an opening at 30 cm or less and that sucks outside air by generating suction air and that can be moved by self-running or manually.

1 is an external perspective view of the electric vacuum cleaner according to Embodiment 1 of the present invention. (A) The top view of the suction tool of the vacuum cleaner in the embodiment, (b) The top view which shows the state which isolate | separated the small suction tool of the suction tool Top plan view of the suction tool in the same embodiment with the upper member removed Central sectional view of the suction tool in the same embodiment Main part sectional drawing of the suction tool in the embodiment Sectional drawing of the principal part at the time of opening of the suction tool in the embodiment The perspective view which shows the intermediate member and shielding body of the suction tool in the embodiment Perspective view of a conventional suction tool

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Suction tool 4 Vacuum cleaner main body 7 Electric motor 8 Dust collection chamber 9 Suction chamber 10 Upper member 11 Lower member 13 Suction port 22 2nd suction port 23 1st suction port 24 Communication path 26 Shielding body 28 Holding part 37 Spring ( Energizing body)

Claims (6)

A suction chamber having an opening on a lower surface, a suction port for communicating with the suction chamber and connected to a suction path of a cleaner body, a first suction port opened on an upper surface of a suction tool, the suction chamber and the first A communication path that communicates with one suction port, a second suction port that is provided in the middle of the communication path and communicates with the suction chamber, a shield that opens and closes the first suction port, and the shield And a biasing body that biases the first suction port toward the side that closes the first suction port, and the shielding member is configured to absorb the first suction port by suction force generated in the communication path by suction air generated in the cleaner body. A suction tool for a vacuum cleaner, wherein the suction member is moved to an opening side and the open state of the shield is held by a suction force generated in the second suction port by the suction air. The vacuum cleaner according to claim 1, wherein the shield is formed in a flat plate shape, and the back surface of the shield closes the second suction port and keeps the open state when the first suction port is opened. Suction tool. The vacuum cleaner suction tool according to claim 2, wherein an opening is provided in front of the suction chamber. The suction tool for a vacuum cleaner according to claim 3, wherein the first suction port is formed obliquely downward toward the front and the communication path is configured obliquely downward toward the front. The communication path is formed by the upper surface of the upper member that forms the upper outline of the suction tool and the lower surface of the lower member that forms the suction chamber, and the shield is rotatably held by the holding portion that extends from the lower surface of the lower member. The vacuum cleaner suction tool according to any one of claims 2 to 4. The vacuum cleaner provided with the vacuum cleaner main body which incorporates the electric blower for generating a suction wind, and the vacuum cleaner suction tool of any one of Claims 1-5.

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