JP4823875B2 - Vacuum cleaner suction port - Google Patents

Description

  The present invention relates to a vacuum cleaner widely used in general households, and more particularly to a suction port body thereof.

  Conventional vacuum cleaners generally include a vacuum cleaner body equipped with an electric blower, a suction port body having a suction port at the bottom, a connecting hose and an extension pipe that sequentially connect the vacuum cleaner body and the suction port body, Consists of. When the electric blower is driven, air is sucked in through the suction port of the suction port that faces the floor, and the air passes through the extension tube and connecting hose in that order to enter the cleaner body, and dust is removed by the dust collector. Then, it is discharged from the cleaner body through the electric blower. In this way, the floor surface can be cleaned.

  The suction port body includes a main body casing and a connecting pipe connected to the rear portion of the main body casing. The connecting pipe is connected to an extension pipe that is a component of the vacuum cleaner. A suction opening is formed in the bottom of the front part of the main body housing, and a rotating brush is disposed along the left-right direction at the suction opening. The driving force for rotating the rotary brush is given by a motor. The motor is stored in a motor storage chamber partitioned on one side of the main body casing.

Here, in the conventional suction port body, in order to cool the motor that generates heat in response to driving, an intake hole communicating with the outside is formed on the rear surface of the main body housing corresponding to the rear wall of the motor storage chamber, and the rotation is performed. An exhaust hole communicating with the suction port is formed in the front wall of the motor storage chamber parallel to the brush rotation axis (see, for example, Patent Document 1). Due to the suction force associated with the driving of the electric blower during cleaning, air around the rear part of the suction port body is sucked into the motor storage chamber from the suction hole, and the air is discharged from the exhaust hole to the suction port. In the process, air flows around the motor in the motor housing chamber to cool the motor.
JP-A-5-253125

  However, in such a conventional suction port body, since the exhaust hole is opened at a position deviated from the front side of the connection pipe, the suction force acting on the exhaust hole is not so high. If so, the amount of air flowing around the motor decreases, and the cooling efficiency of the motor cannot be said to be sufficient. In addition, when the position where the exhaust hole is opened is brought closer to the front of the connecting pipe, the suction force acting on the exhaust hole is increased and the cooling efficiency of the motor is improved, but there is an unpleasant sound such as wind noise there. And noise problems become apparent.

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a suction port body of a vacuum cleaner that can efficiently cool a motor that drives a rotating brush while suppressing noise. is there.

  In order to achieve the above object, a suction port body according to the present invention is connected to a main body housing having a suction port at the bottom and a suction chamber narrowed toward the center from the suction port, and a rear portion of the main body housing. A suction pipe body of a vacuum cleaner including a connection pipe connected to the suction chamber, a rotary brush arranged in the left-right direction at the suction port, and a motor for driving the rotary brush, The main body housing has a motor storage chamber for storing the motor on one side of left and right sides sandwiching the suction chamber. The motor storage chamber communicates with the outside through a first air intake hole formed on the rear surface of the main body casing, and is formed on a first partition wall perpendicular to the rotation axis of the rotary brush. The exhaust chamber communicates with the suction chamber. A sound absorbing material having air permeability is provided so as to cover at least the first exhaust hole of the first intake hole and the first exhaust hole.

  According to such a suction port body, the air around the rear portion is sucked into the motor storage chamber from the first suction hole by the suction force acting in the connecting pipe during cleaning, and the air is sucked from the first exhaust hole. Discharged into the room. In the process, air flows around the motor in the motor housing chamber to cool the motor. Further, the air at that time is absorbed when passing through the sound absorbing material. Since the first exhaust hole is opened in front of the connecting pipe, a sufficient suction force acts on the first exhaust hole, and the motor cooling efficiency is excellent. Moreover, the noise can be reduced by absorbing the unpleasant sound that appears to be generated near the first exhaust hole by the sound absorbing material.

  According to the suction port body of the vacuum cleaner of the present invention, the motor that drives the rotating brush can be efficiently cooled while suppressing noise.

  Hereinafter, an embodiment of a suction port body of a vacuum cleaner according to the present invention will be described in detail with reference to the drawings. FIG. 1 is an external view schematically showing the overall configuration of a vacuum cleaner provided with a suction port body according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view in side view showing the internal structure of the suction port body. 3 is a cross-sectional view in top view showing the internal structure of the suction port body, and FIG. 4 is a perspective view showing the appearance of the suction port body.

  As shown in FIG. 1, the vacuum cleaner is roughly composed of a cleaner body 1, a suction port body 2, a connection hose 3 and an extension pipe 4 that connect the cleaner body 1 and the suction port body 2 in order. Is composed of. The vacuum cleaner body 1 is equipped with an electric blower 5 and includes a dust collector 6 in the air passage to the electric blower 5. The connecting hose 3 can be freely bent, while the extension pipe 4 can be expanded and contracted by adding a pipe on the way or removing the pipe. In the extension pipe 4, a handle 4 a protrudes from an end connected to the connection hose 3, that is, an end opposite to the end connected to the suction port body 2.

  When the electric blower 5 is driven, a suction force acts on the air path from the suction port body 2 to the extension pipe 4, the connection hose 3, and the cleaner body 1, and the suction port at the bottom of the suction port body 2 (not shown in FIG. 1). Air is inhaled from the figure. The air enters the cleaner body 1 through the extension pipe 4 and the connection hose 3 in order, and is discharged from the cleaner body 1 through the dust collector 6 and the electric blower 5 in order. At that time, the dust collector 6 removes dust from the sucked air. The dust collector 6 can be a cyclone type that swirls sucked air at high speed and removes dust in the air by centrifugation, or removes dust in the air by passing the sucked air through a paper pack. A paper pack type is used. In addition, a dust collection filter such as a HEPA (High Efficiency Particulate Air) filter for collecting fine dust from the air passing through the dust collector 6 is provided between the dust collector 6 and the electric blower 5. It is also possible.

  Here, a detailed configuration of the suction port body 2 will be described below with reference to FIGS. The suction port body 2 of the present embodiment is mainly composed of a main body casing 10 and a connecting pipe 20 that extends from the center of the rear portion of the main body casing 10 and is connected to the extension pipe 4. At the front of the main body housing 10, a horizontally long suction port 11 is formed on the bottom facing the surface to be cleaned such as a floor to be cleaned, and the air passage from the suction port 11 is directed toward the center. The suction chamber 13 is formed. The main body casing 10 is formed by combining a plurality of casing members.

  A rotary brush 12 extending in the left-right direction is pivotally supported at the suction port 11. Brushes 12a and blades 12b are alternately spiraled on the outer periphery of the rotating brush 12, and the rotating brush 12 rotates during cleaning, so that dust on the surface to be cleaned is sucked into the suction chamber 13. Roll up to guide. The driving force for the rotation of the rotary brush 12 is given by the motor 14 (see FIG. 3), and the drive of the motor 14 is controlled by the circuit board 15 (see FIG. 3).

  The connecting pipe 20 is connected to and supported by a support shaft (not shown) along the left-right direction so as to be connected to the suction chamber 13 with respect to the main body housing 10. (See “P”). The connecting tube 20 can be freely taken from a posture extending horizontally to a posture standing substantially vertically with respect to the main body housing 10.

  Strictly speaking, the connecting pipe 20 in this embodiment is not directly supported by the main body housing 10 but indirectly supported by a short relay pipe 30. Specifically, first, the relay pipe 30 is connected to support shafts 33A and 33B (see FIG. 3) along the left-right direction so as to be connected to the suction chamber 13. Here, the relay pipe 30 is allowed to rotate only slightly with the support shafts 33A and 33B as fulcrums (see reference sign “Q” in FIG. 2). The end of the connection pipe 20 is received at the end of the relay pipe 30 and is pivotally connected with a support shaft along the left-right direction as a fulcrum P.

  The connecting pipe 20 here has a front cover 21 and a rear cover that swell in a convex spherical shape around a pivot point P of rotation at the end portion of the connecting pipe 20 that is received by the relay pipe 30. 22 is attached. On the other hand, in the relay pipe 30, the ridge 31 protrudes inward so as to come into contact with the outer peripheral surface of the front cover 21 of the connecting pipe 20 received with a small gap from the upper end edge thereof, and is on the opposite side. From the lower end edge, a protrusion 32 protrudes inward so as to contact the outer peripheral surface of the rear cover 22 of the received connecting pipe 20 with a minute gap. The connecting pipe 20 rotates about the fulcrum P with respect to the relay pipe 30, that is, the main body housing 10, and in this case, the proximity of the outer peripheral surface of the front cover 21 and the protrusions 31 and Due to the proximity of the outer peripheral surface of the cover 22 and the protrusions 32, sealing with the outside air is performed.

  The relay pipe 30 here has a concentric double pipe structure, and the outer cylinder part that supports the connection pipe 20 is free from the inner cylinder part that is supported by the body housing 10. Can be rotated.

  Further, in the main body housing 10 in the present embodiment, among the left and right side portions sandwiching the suction chamber 13, the one side portion (right side portion in FIG. In addition, a motor storage chamber 50 that is partitioned vertically is formed, and the front, rear, left, right, and top are partitioned in order to store the circuit board 15 on the other side (the left side in FIG. 3) opposite to the one side. A substrate storage chamber 60 is formed. The motor 14 is fixed in the motor storage chamber 50 with the main shaft facing outward. A belt 16 is bridged between the main shaft of the motor 14 and the rotary shaft of the rotary brush 12. When the motor 14 is driven, the rotation of the main shaft is transmitted to the rotary shaft of the rotary brush 12 via the belt 16. As a result, the rotating brush 12 rotates. The circuit board 15 is fixed in a horizontal posture in the board storage chamber 60. The circuit board 15 and the motor 14 are electrically connected by wiring (not shown).

  By the way, since the motor 14 generates heat in response to driving, cooling is indispensable. The cooling structure is as follows. First, an intake hole (hereinafter referred to as a “first intake hole”) may be described in a form in which a plurality of vertically long slits are arranged horizontally on the rear surface of the main body housing 10 corresponding to the rear wall of the motor storage chamber 50. 52) is formed. The first intake hole 52 is configured to communicate the motor housing chamber 50 with the outside just in the vicinity where the main shaft of the motor 14 is disposed, that is, near the end.

  Subsequently, the main body housing 10 is formed with a motor-side auxiliary chamber 51 that is adjacent to the front wall of the motor storage chamber 50 and adjacent to the suction chamber 13 and is partitioned into front and rear, left and right, and top and bottom. . The wall that partitions the motor side auxiliary chamber 51 and the motor storage chamber 50 has a vent hole (hereinafter, referred to as “first vent hole”) in a form in which a plurality of vertically long slits are arranged horizontally. 53 is formed. The first vent 53 communicates between the motor storage chamber 50 and the motor side auxiliary chamber 51.

  Further, the wall that partitions the motor-side auxiliary chamber 51 and the suction chamber 13 (hereinafter sometimes referred to as “first partition wall”) has an exhaust hole in a form in which a plurality of vertically long slits are arranged side by side. (Hereinafter, referred to as “first exhaust hole”) 54 is formed. The first partition wall stands substantially perpendicular to the rotational axis of the rotary brush 12, and the first exhaust hole 54 is just in front of the connection pipe 20 and is connected to the motor side auxiliary chamber 51 (and thus the motor housing). The chamber 50) communicates with the suction chamber 13.

  In the motor storage chamber 50, a sound absorbing material 55 having air permeability such as urethane foam, sponge, felt, or the like is disposed so as to cover the first intake hole 52. Similarly, in the motor side auxiliary chamber 51, a sound absorbing material 56 is disposed so as to cover the first vent hole 53, and a sound absorbing material 57 is disposed so as to cover the first exhaust hole 54.

  Under such a configuration, when the electric blower 5 of the cleaner body 1 is driven, a suction force acts on the suction chamber 13 through the connection hose 3, the extension pipe 4 and the connection pipe 20 (including the relay pipe 30). The air is sucked in from the suction port 11 facing the floor surface, and the floor surface is cleaned. At the same time, due to the suction force acting on the suction chamber 13, the air around the rear portion of the suction port body 2 is sucked into the motor storage chamber 50 from the first intake hole 52, and the air is supplied to the first vent hole 53. Then, the air passes through the motor side auxiliary chamber 51 in order and is discharged from the first exhaust hole 54 to the suction chamber 13. In the process, air flows around the motor 14 in the motor storage chamber 50 to cool the motor 14. The air at that time is absorbed when passing through the sound absorbing materials 55, 56, and 57.

  Accordingly, in such a suction port body 2, since the first exhaust hole 54 is opened in front of the connection pipe 20, a sufficient suction force acts on the first exhaust hole 54 to cool the motor 14. Excellent efficiency. Of course, particularly in the vicinity of the first exhaust hole 54, an unpleasant sound such as a wind noise is generated due to the action of a sufficient suction force. Can be reduced. Further, since the first exhaust hole 54 is formed in the first partition wall substantially perpendicular to the rotation axis of the rotary brush 12, the dust wound up by the rotary brush 12 remains as it is in the first exhaust hole 54. There is no situation toward the inside, and as a result, the first exhaust hole 54 and thus the sound absorbing material 57 can be kept clean without adhesion of dust.

  In the present embodiment, a sound absorbing material 55 is disposed in the first intake hole 52 that communicates with the motor storage chamber 50 from the outside, and further, the first suction chamber 52 communicates with the motor side auxiliary chamber 51. Since the sound absorbing material 56 is disposed in the vent hole 53, noise can be further reduced. Moreover, the sound absorbing material 55 disposed in the first intake hole 52 can prevent inadvertent entry of dust into the motor storage chamber 50. However, in terms of noise reduction, it is sufficient to arrange the sound absorbing material 57 in the first exhaust hole 54.

  Moreover, in this embodiment, since the motor side auxiliary chamber 51 is interposed in the air passage from the motor storage chamber 50 to the suction chamber 13, the air passage becomes longer and the air passage length becomes longer. Sound absorption effect in minutes can be expected. However, the motor side auxiliary chamber 51 that is completely separated from the motor storage chamber 50 is not necessarily required, and the motor storage chamber 50 may be integrated without the partition wall.

  By the way, since the circuit board 15 generates heat similarly to the motor 14, cooling is indispensable. In particular, a resistor is mounted on the circuit board 15 as a safety circuit when an abnormal load is applied to the motor 14, and heat generated from the resistor is excessive. The cooling structure is as follows. First, an air intake hole (hereinafter referred to as a “second air intake hole”) may be described in a form in which a plurality of vertically long slits are arranged horizontally on the rear surface of the main body housing 10 corresponding to the rear wall of the substrate storage chamber 60. 62) is formed. The second intake hole 62 is close to the end portion and communicates with the outside and the substrate storage chamber 60.

  Subsequently, the main body housing 10 is formed with a substrate side auxiliary chamber 61 which is adjacent to the front wall of the substrate storage chamber 60 and adjacent to the suction chamber 13 and is partitioned into front and rear, left and right, and top and bottom. . On the wall that partitions the substrate side auxiliary chamber 61 and the substrate storage chamber 60, a plurality of vertically long slits are arranged side by side in the form of a vent (hereinafter referred to as a “second vent”). 63 is formed. The second vent 63 communicates the substrate storage chamber 60 and the substrate side auxiliary chamber 61.

  Furthermore, the wall that partitions the substrate side auxiliary chamber 61 and the suction chamber 13 (hereinafter sometimes referred to as “second partition wall”) has a plurality of vertically long slits arranged in a horizontal manner in the exhaust hole. (Hereinafter, may be referred to as “second exhaust hole”) 64 is formed. The second partition wall stands substantially perpendicular to the rotation axis of the rotary brush 12, and the second exhaust hole 64 is just in front of the connection pipe 20, and the substrate side auxiliary chamber 61 (and thus substrate storage). The chamber 60) communicates with the suction chamber 13.

  In the substrate storage chamber 60, a sound absorbing material 65 having air permeability such as urethane foam, sponge, felt or the like is disposed so as to cover the second intake hole 62. Similarly, a sound absorbing material 66 is disposed in the substrate side auxiliary chamber 61 so as to cover the second ventilation hole 63, and a sound absorbing material 67 is disposed so as to cover the second exhaust hole 64.

  Under such a configuration, when the electric blower 5 of the cleaner body 1 is driven, the air around the rear portion of the suction port body 2 is drawn from the second suction hole 62 by the suction force acting on the suction chamber 13. The air is sucked into 60, and the air passes through the second ventilation hole 63 and the substrate side auxiliary chamber 61 in this order, and is discharged from the second exhaust hole 64 to the suction chamber 13. In the process, air flows around the circuit board 15 in the board housing chamber 60 to cool the circuit board 15. The air at that time is absorbed when passing through the sound absorbing materials 65, 66, and 67.

  Therefore, in such a suction port body 2, since the second exhaust hole 64 is opened in front of the connection pipe 20, a sufficient suction force acts on the second exhaust hole 64, and the circuit board 15 Excellent cooling efficiency. Of course, particularly in the vicinity of the second exhaust hole 64, an unpleasant sound such as a wind noise is generated by the action of a sufficient suction force. However, the sound absorbing material 67 absorbs the unpleasant sound and generates noise. Can be reduced. Further, since the second exhaust hole 64 is formed in the second partition wall substantially perpendicular to the rotation axis of the rotary brush 12, the dust wound up by the rotary brush 12 remains as it is in the second exhaust hole 64. There is no situation toward the inside, and as a result, the second exhaust hole 64 and hence the sound absorbing material 67 can be kept clean without dust adhesion.

  Further, in the present embodiment, a sound absorbing material 65 is disposed in the second intake hole 62 that communicates with the substrate storage chamber 60 from the outside, and further, the second suction chamber 65 communicates with the substrate side auxiliary chamber 61. Since the sound absorbing material 66 is disposed in the air vent 63, noise can be further reduced. In addition, the sound absorbing material 65 disposed in the second intake hole 62 can prevent inadvertent entry of dust into the substrate storage chamber 60. However, in terms of noise reduction, it is sufficient to arrange the sound absorbing material 67 in the second exhaust hole 64.

  In the present embodiment, since the substrate side auxiliary chamber 61 is interposed in the air path from the substrate storage chamber 60 to the suction chamber 13, the air path becomes longer and the air path length becomes longer. Sound absorption effect in minutes can be expected. However, the substrate-side auxiliary chamber 61 that is completely separated from the substrate storage chamber 60 is not necessarily required, and the partition wall of both may be eliminated to form an integrated substrate storage chamber 60.

  In addition, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

  INDUSTRIAL APPLICABILITY The present invention is useful for a vacuum cleaner including a rotary brush and a suction port having a motor for driving the rotary brush.

It is an outline view showing typically the whole composition of the vacuum cleaner provided with the suction mouth object of one embodiment of the present invention. It is sectional drawing in the side view which shows the internal structure of a suction inlet body. It is sectional drawing in the top view which shows the internal structure of a suction inlet body. It is a perspective view which shows the external appearance of a suction inlet.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 2 Suction port 3 Connection hose 4 Extension pipe 5 Electric blower 6 Dust collector 10 Main body housing 11 Suction port 12 Rotating brush 13 Suction chamber 14 Motor 15 Circuit board 16 Belt 20 Connection pipe 30 Relay pipe 50 Motor housing Chamber 51 Motor side auxiliary chamber 52 First intake hole 53 First vent hole 54 First exhaust hole 55, 56, 57 Sound absorbing material 60 Substrate storage chamber 61 Substrate side auxiliary chamber 62 Second intake hole 63 Second Ventilation hole 64 Second exhaust hole 65, 66, 67 Sound absorbing material

Claims (2)

A main body housing having a suction chamber air path from the suction port has an inlet is formed by Rukoto deflated toward the center on the bottom, is connected to the rear portion of the main housing leading to the suction chamber a connection tube, a rotary brush Ru arranged along the lateral direction in the suction port, a suction port body of the electric vacuum cleaner including a motor for driving the rotary brush,
The main body housing includes a motor housing chamber that houses the motor in one of the left and right sides sandwiching the suction chamber, and a motor that is formed adjacent to the suction chamber and the motor housing chamber. A side auxiliary room ,
Said motor housing chamber, said main body through housing first inlet hole that will be formed on the rear surface of communicated with the outside, a first passage formed in the wall that separates the said motor-side auxiliary chamber and the motor housing chamber Communicate with the motor side auxiliary chamber through the pores;
The motor-side auxiliary chamber is in communication with the suction chamber through the first exhaust hole that will be formed in the first partition wall for partitioning said suction chamber and the motor-side auxiliary chamber,
An electric cleaning comprising a sound absorbing material having air permeability so as to cover at least the first exhaust hole among the first intake hole , the first vent hole, and the first exhaust hole. Air inlet of the machine. Including a circuit board for controlling the driving of the motor;
Said body housing, the substrate and the motor housing chamber is disposed is Ru one side adjacent to the board receiving chamber for accommodating the circuit board on the other side opposite to said substrate accommodating chamber and the suction chamber A side auxiliary room ,
The board housing chamber, the main body through the housing second suction hole that will be formed on the rear surface of communicated with the outside, a second passage formed in the wall for partitioning said substrate side auxiliary chamber and the board housing chamber Communicating with the substrate side auxiliary chamber through the pores;
The substrate-side auxiliary chamber is in communication with the suction chamber through the second exhaust hole that will be formed in the second partition wall for partitioning said suction chamber and said substrate-side auxiliary chamber,
The sound-absorbing material having air permeability is provided so as to cover at least the second exhaust hole among the second intake hole , the second vent hole, and the second exhaust hole. The suction inlet body of the vacuum cleaner of 1.

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