JP2014064647A - Vacuum cleaner - Google Patents

Abstract

A vacuum cleaner that can reduce noise generated in a main body of a vacuum cleaner in a first space and a second space and has high noise reduction.
A vacuum cleaner body having an exhaust port for discharging exhaust air discharged from an electric blower that generates suction air to the outside, a dust collector attached to the vacuum cleaner body, and an interior of the vacuum cleaner body An exhaust air passage that is provided and guides the exhaust air exhausted from the electric blower to the exhaust port, a first space provided in the cleaner body, and a first space in the first space. And a second space portion that is partitioned and provided, the first space portion is formed so as not to communicate with the exhaust air passage, and the second space portion is connected to the exhaust air passage. A part of the exhaust air that is formed so as to communicate and is discharged from the electric blower and discharged from the exhaust port to the outside of the main body of the cleaner through the exhaust air passage is connected to the exhaust port through the second space portion. A vacuum cleaner that is discharged outside the vacuum cleaner body.
[Selection] Figure 8

Description

  The present invention relates to a vacuum cleaner.

  Conventionally, in a vacuum cleaner, in order to reduce the noise of the vacuum cleaner, a third space is formed between the first space that houses the dust reservoir and the second space that houses the negative pressure generation source. And the structure which discharges a part of exhaust_gas | exhaustion from a negative pressure generation source to the exterior of a housing | casing via 3rd space is proposed (for example, refer patent document 1).

  That is, as shown in FIG. 13, in the conventional vacuum cleaner, the housing 200 is formed in a front portion in the housing 200, and includes a first space that houses a dust storage portion 201 that collects dust, And a second space for accommodating a negative pressure generation source 202 that generates a negative pressure. In addition, a third space between the first space and the second space is partitioned from the first space by the first boundary wall 203 and partitioned from the second space by the second boundary wall 204. A space is formed. The second boundary wall 204 is formed with a communication port 205 that communicates the second space and the third space.

  In the conventional vacuum cleaner, the air exhausted from the negative pressure generation source 202 is exhausted from an exhaust hole 207 provided in the rear portion of the housing 200 via a ventilation path 206 provided below the negative pressure generation source 202. The first exhaust passage and the second space exhausted to the outside of the housing 200 are led to a cord reel storage space (not shown) in which the cord reel 208 is stored, and then the cord reel storage space (not shown). From the exhaust hole 207 to the outside of the housing 200 and led to the third space through the communication port 205 and the third space. The third exhaust passage that is exhausted to the outside of the housing 200 from the gap G formed in the space is configured to be exhausted to the outside of the housing 200, and is exhausted from the negative pressure generation source 202. Case 2 from three exhaust passages By exhausting the 0 outer reduces the flow rate of the exhaust gas discharged from the exhaust hole 207, and is configured to reduce noise of wind noise generated by the exhaust hole 207.

JP 2009-233303 A

  However, the conventional vacuum cleaner still has room for improvement from the viewpoint of reducing noise generated by the vacuum cleaner and improving the quietness of the vacuum cleaner.

  That is, in the conventional vacuum cleaner, a part of the air discharged from the negative pressure generating source flows into the third space from the communication port, and from the gap formed in the third space to the outside of the housing. The third space is in direct communication with the outside of the housing, and the third space and the outside of the housing are partitioned by the housing. Therefore, noise such as wind noise generated in the third space and wind noise generated in the third space together with part of the air generated from the negative pressure generation source and discharged from the negative pressure generation source. It may be transmitted to the outside of the housing from the gap formed in the case, or may be transmitted directly from the third space to the housing and transmitted to the outside of the housing. In some cases, it was not possible to reduce the noise generated inside the housing.

  The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide a vacuum cleaner that can reduce noise generated by the vacuum cleaner and has high silence.

  In order to solve the above-described problems of the prior art, the present invention has a built-in electric blower that generates suction air, and a vacuum cleaner main body having an exhaust port for discharging the exhaust air discharged from the electric blower to the outside. The dust collector is attached to the vacuum cleaner body and collects the dust sucked by the suction air generated by the electric blower, and the exhaust air exhausted from the electric blower is provided inside the vacuum cleaner body. An exhaust air passage that leads to the exhaust port, a first space provided inside the cleaner body, and a second space provided inside the first space are separated from the first space. The first space portion is formed so as not to communicate with the exhaust air passage, and the second space portion is formed so as to communicate with the exhaust air passage. The vacuum cleaner body is exhausted from the exhaust port through the exhaust air passage. Some of the exhaust air exhausted to the parts, is discharged to the outside of the cleaner body from the exhaust port through the second space, to provide an electric vacuum cleaner.

  Accordingly, a part of the exhaust air discharged from the electric blower and discharged from the exhaust port to the outside of the cleaner body through the exhaust air passage is transferred from the exhaust port to the outside of the cleaner body through the second space portion. Therefore, noise such as wind noise generated in the electric blower and flowing into the second space together with a part of the exhaust air discharged from the electric blower can be reduced in the second space. The quietness of the vacuum cleaner can be improved. In addition, the second space portion does not directly communicate with the outside of the cleaner body, but communicates only with the exhaust air passage. It is possible to sufficiently prevent noise such as wind noise flowing into the space portion 2 and wind noise generated in the second space portion from being transmitted to the outside of the cleaner body. Therefore, the noise generated inside the cleaner body can be surely reduced in the second space, and the quietness of the vacuum cleaner can be improved. Furthermore, since the first space portion is formed so as not to communicate with the exhaust air passage, and the second space portion is formed inside the first space portion, the first space portion and the second space portion are formed. A double wall structure can be formed by the first space portion, and noise transmitted from the inside of the second space portion to the outside of the second space portion can be reduced by the first space portion. . Therefore, the first space portion and the second space portion can sufficiently prevent the noise generated inside the cleaner body from being transmitted to the outside of the cleaner body, thereby reducing the noise of the vacuum cleaner. Can be improved.

  According to the vacuum cleaner of the present invention, noise generated inside the vacuum cleaner body can be reduced in the first space portion and the second space portion, and the quietness of the vacuum cleaner can be improved. become able to.

Whole perspective view of the electric vacuum cleaner in Embodiment 1 of this invention The front perspective view of the dust collector in Embodiment 1 of this invention The rear perspective view of the dust collector in Embodiment 1 of the present invention Sectional drawing of the dust collector in Embodiment 1 of this invention Whole perspective view of the vacuum cleaner main body in Embodiment 1 of this invention Whole perspective view of the cleaner body in the state where the dust collector in Embodiment 1 of the present invention is removed Whole perspective view of the cleaner body in the state where the lower frame and the upper frame in Embodiment 1 of the present invention are removed Sectional drawing of the cleaner body in a surface perpendicular | vertical to the to-be-cleaned surface in Embodiment 1 of this invention Sectional drawing of the cleaner body in the surface parallel to the to-be-cleaned surface in Embodiment 1 of this invention Sectional drawing of the cleaner body in a surface perpendicular | vertical to the to-be-cleaned surface in Embodiment 2 of this invention Sectional drawing of the cleaner body in the surface parallel to the surface to be cleaned in Embodiment 2 of the present invention Sectional drawing of the cleaner body which shows the modification of the 2nd space part in Embodiment 2 of this invention Cross-sectional view of a housing in a conventional vacuum cleaner

  A first invention has a built-in electric blower that generates suction air, a vacuum cleaner main body having an exhaust port for discharging exhaust air discharged from the electric blower to the outside, and an electric blower attached to the vacuum cleaner main body. A dust collecting device that collects dust sucked in by the suction air generated in the vacuum cleaner body, an exhaust air passage that is provided inside the vacuum cleaner main body and that guides the exhaust air exhausted from the electric blower to the exhaust port, A first space provided inside the vacuum cleaner main body, and a second space provided inside the first space and partitioned from the first space, The space portion is formed so as not to communicate with the exhaust air passage, and the second space portion is formed so as to communicate with the exhaust air passage, and is discharged from the electric blower and exhausted through the exhaust air passage. Part of the exhaust air exhausted from the mouth to the outside of the vacuum cleaner body It is discharged to the outside of the cleaner body from the exhaust port through between unit is obtained by a vacuum cleaner.

  Accordingly, a part of the exhaust air discharged from the electric blower and discharged from the exhaust port to the outside of the cleaner body through the exhaust air passage is transferred from the exhaust port to the outside of the cleaner body through the second space portion. Therefore, noise such as wind noise generated in the electric blower and flowing into the second space together with a part of the exhaust air discharged from the electric blower can be reduced in the second space. The quietness of the vacuum cleaner can be improved. In addition, the second space portion does not directly communicate with the outside of the cleaner body, but communicates only with the exhaust air passage. It is possible to sufficiently prevent noise such as wind noise flowing into the space portion 2 and wind noise generated in the second space portion from being transmitted to the outside of the cleaner body. Therefore, the noise generated inside the cleaner body can be surely reduced in the second space, and the quietness of the vacuum cleaner can be improved. Furthermore, since the first space portion is formed so as not to communicate with the exhaust air passage, and the second space portion is formed inside the first space portion, the first space portion and the second space portion are formed. A double wall structure can be formed by the first space portion, and noise transmitted from the inside of the second space portion to the outside of the second space portion can be reduced by the first space portion. . Therefore, the first space portion and the second space portion can sufficiently prevent the noise generated inside the cleaner body from being transmitted to the outside of the cleaner body, thereby reducing the noise of the vacuum cleaner. Can be improved.

  In a second aspect of the invention, in particular, in the first aspect of the invention, the second space portion has a cross-sectional area of the second space portion on the exhaust air passage side opposite to the exhaust air passage of the second space portion. It is set as the structure currently formed so that it may become larger.

  As a result, various noises included in the noise generated by the electric blower, such as wind noise flowing into the second space together with part of the exhaust air discharged from the electric blower, and wind noise generated in the second space. The frequency sound can be reduced in the second space, and the quietness of the vacuum cleaner can be improved.

  In a third aspect of the invention, in particular, in the first or second aspect of the invention, a suction air passage for guiding dust sucked by suction air generated by the electric blower to the dust collector is provided inside the cleaner body. The suction air path is provided in the first space portion.

Thereby, since a suction air path is formed in the inside of the 1st space part, a double wall structure can be formed with the 1st space part and a suction air path. Therefore, noise such as wind noise generated in the suction air passage can be sufficiently prevented from being transmitted to the outside of the vacuum cleaner body, and the quietness of the vacuum cleaner can be further improved.

  In a fourth aspect of the invention, in particular, in the first to third aspects of the invention, the cleaner body is provided with a dust collector attachment portion to which the dust collector is attached, and the first space portion is the cleaner body. , And is formed at the lower part of the dust collector attachment portion.

  Thereby, since the space formed inside the vacuum cleaner main body below the dust collector mounting portion can be effectively used, the space for forming the first space portion is separately provided inside the vacuum cleaner main body. It is not necessary to form, and it can prevent that a vacuum cleaner main body enlarges.

  In particular, according to the fifth invention, in the first to fourth inventions, the sound absorbing material is arranged in the exhaust air passage and the second space.

  Thereby, noise such as wind noise generated by the electric blower and wind noise generated in the exhaust air path and the second space is absorbed by the sound absorbing material arranged in the exhaust air path and the second space. be able to. Therefore, the noise generated inside the cleaner body can be further reduced, and the quietness of the vacuum cleaner can be further improved.

  According to a sixth aspect of the present invention, in particular, in the first to fifth aspects of the invention, the second space portion is disposed inside the second space portion and the surface of the second space portion facing the exhaust air passage and the exhaust. It is made into the structure currently formed in the staircase shape so that the distance with an air path may differ.

  As a result, various noises included in the noise generated by the electric blower, such as wind noise flowing into the second space together with part of the exhaust air discharged from the electric blower, and wind noise generated in the second space. The frequency sound can be reduced in the second space, and the quietness of the vacuum cleaner can be improved.

  Hereinafter, a preferred embodiment of a vacuum cleaner of the present invention will be described in detail with reference to the drawings. In the following description, the same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted.

(Embodiment 1)
Embodiment 1 of the vacuum cleaner of the present invention will be described with reference to FIGS.

  FIG. 1 is an overall perspective view of the electric vacuum cleaner according to Embodiment 1 of the present invention. FIG. 2 is a front perspective view of the dust collector in Embodiment 1 of the present invention. Furthermore, FIG. 3 is a rear perspective view of the dust collector in Embodiment 1 of the present invention. Moreover, FIG. 4 is sectional drawing of the dust collector in Embodiment 1 of this invention. Furthermore, FIG. 5 is an overall perspective view of the cleaner body in the first embodiment of the present invention. FIG. 6 is an overall perspective view of the cleaner body with the dust collector in Embodiment 1 of the present invention removed. Furthermore, FIG. 7 is an overall perspective view of the cleaner body with the lower frame and the upper frame removed in Embodiment 1 of the present invention. Moreover, FIG. 8 is sectional drawing of the cleaner body in the surface perpendicular | vertical to the to-be-cleaned surface in Embodiment 1 of this invention. Furthermore, FIG. 9 is sectional drawing of the cleaner body in the surface parallel to the to-be-cleaned surface in Embodiment 1 of this invention.

As shown in FIG. 1, the electric vacuum cleaner 100 includes a vacuum cleaner main body 1 that includes an electric blower 34 (see FIGS. 8 and 9) that generates suction air, and a collector that is detachably attached to the vacuum cleaner main body 1. A dust device 2, a suction tool 3 for collecting dust on the surface to be cleaned, a hose 4 having one end detachably connected to an air inlet 1a provided in the cleaner body 1, and one end being the other end of the hose 4 The extension tube 5 is detachably connected to the suction tool 3, and the other end is detachably connected to the suction tool 3.

  The suction tool 3 includes a rotating brush (not shown) that scrapes dust on the surface to be cleaned and an electric motor (not shown) that rotates the rotating brush (not shown). Moreover, the end pipe 7 provided with the handle part 6 hold | maintained when a user cleans is provided in the edge part by the side of the extension pipe 5 of the hose 4, and it extends with the hose 4 via this front end pipe 7. The tube 5 is detachably connected. Further, a connection pipe 8 is provided at the end of the hose 4 on the cleaner body 1 side, and the intake port 1a of the cleaner body 1 and the hose 4 are detachably connected via the connection pipe 8. ing.

  As shown in FIGS. 2 to 4, the dust collector 2 is mainly composed of a substantially cylindrical dust collector body having openings (not shown) at both ends, and a dust collector inside the dust collector body 9. A primary filter mounting frame 11 having a primary filter 10 disposed concentrically with the main body 9, a secondary filter 12 disposed above the primary filter mounting frame 11, and an umbrella disposed below the primary filter 10. A first extending portion 13 having a shape, a second extending portion 14 disposed between the primary filter 10 and the first extending portion 13, and a dust collector main body 9 are rotatably attached. The dust collector main body 9 is detachably attached to the dust collector main body 9 and a lower lid 15 that covers an opening (not shown) on the lower end side of the dust collector main body 9 so as to be openable and closable. Open the upper end opening (not shown) and the upper surface of the secondary filter 12 Cormorant an upper lid body 16, a handle 17 which is rotatably supported on the top cover body 16, and a.

  The dust collector main body 9 is formed so that the inner diameter of the central portion in the longitudinal direction of the dust collector main body 9 is smaller than the inner diameter of both ends of the dust collector main body 9 in the longitudinal direction. In addition, at the rear part of the dust collector main body 9, an inlet that communicates with the intake port 1 a of the cleaner main body 1 in a state where the dust collector 2 is attached to a dust collector attachment portion 42 of the cleaner main body 1 described later. 9a is formed. Further, inside the dust collector main body 9, the dust collector is sucked by the suction air generated by the electric blower 34 (see FIGS. 8 and 9), and is passed through the intake port 1 a provided in the cleaner main body 1. A centrifuge space 2a for centrifuging dust flowing into the dust collector 2 from the inlet 9a provided in the main body 9, and a centrifuge space 2a are provided on the downstream side of the centrifuge space 2a. And a dust accumulating space portion 2b for collecting the dust separated by the centrifuge. The centrifugal separation space 2 a is formed at a substantially central portion in the longitudinal direction of the dust collector 2 by the inner surface of the dust collector main body 9 and the primary filter 10. The dust accumulation space 2 b is formed in the lower part of the dust collector 2 by the inner surface of the dust collector main body 9, the first extension 13, and the lower lid 15.

  The primary filter 10 is made of a metal material, and the metal surface portion is not provided with an uneven shape made of resin or the like, so that a swirl flow flows smoothly, improving separation efficiency, dust, etc. Demonstrate the effect of reducing the wrap around. The effect can be enhanced by subjecting the surface of the primary filter 10 to polishing, and the primary filter 10 can be kept clean by applying antibacterial treatment. The primary filter 10 is disposed inside the dust collector main body 9 in a state of being attached to a primary filter mounting frame 11 formed substantially concentrically with the dust collector main body 9, and the primary filter mounting frame 11. Is attached to the inside of the dust collector main body 9, and the primary filter 10 is configured to be located at a position facing the inlet 9 a of the dust collector main body 9.

A pleated secondary filter 12 is disposed above the primary filter 10, that is, above the primary filter mounting frame 11. Dust that has passed through the primary filter 10 is collected by the secondary filter 12. It is comprised so that. Further, on the upper part of the secondary filter 12, a dust removing unit 18 for removing dust adhering to the secondary filter 12, and
A driving unit 19 that drives the dust removing unit 18 is disposed. The dust removing unit 18 is disposed between the secondary filter 12 and an upper lid body 16 to be described later so as to contact the upper surface of the secondary filter 12, and the drive unit 19 is disposed inside the upper lid body 16 to be described later. ing.

  An umbrella-shaped first extending portion 13 extending from the lower end of the primary filter mounting frame 11 toward the lower side of the dust collector main body 9 is formed at the lower portion of the primary filter 10. The first extension 13 extends from the lower end of the primary filter mounting frame 11 toward the lower side of the dust collector main body 9 so as to be inclined at a predetermined angle with respect to the longitudinal central axis of the dust collector main body 9. The first inclined portion 13a and the lower end of the first inclined portion 13a extend downward from the dust collector main body 9 so as to be substantially parallel to the longitudinal central axis of the dust collector main body 9. The vertical portion 13b, the first inclined portion 13a, and the vertical portion 13b are provided on the inner side, and extend from the upper end of the first inclined portion 13a toward the lower side of the dust collector main body 9. The first cylindrical portion 13c is provided on the inner side of the first cylindrical portion 13c, and extends from the upper end of the first inclined portion 13a toward the central axis of the dust collector main body 9. The dust removing portion 18 The dust removed from the secondary filter 12 by the lower part of the dust collector 2 A second inclined portion 13d for guiding, and a second cylindrical portion 13e which extends from the bottom toward the lower side of the dust collector body 9 of the second inclined portion 13d,.

  The 1st inclination part 13a is formed so that it may spread in the radial direction of the dust collector main body 9 as it goes below the dust collector main body 9. As shown in FIG. In addition, between the first inclined portion 13a and the vertical portion 13b and the inner surface of the dust collector main body 9, a dust passage portion 2c that guides the dust centrifuged in the centrifugal separation space portion 2a to the dust accumulation space portion 2b. The dust passage portion 2c is formed such that the width H1 of the dust passage portion 2c is smaller than the width H2 of the centrifugal separation space portion 2a. Further, gaps (not shown) are formed between the lower end of the vertical portion 13b and the lower lid body 15 described later, and between the lower end of the first cylindrical portion 13c and the lower lid body 15 described later. Yes. Further, between the first inclined portion 13a and the vertical portion 13b and the first cylindrical portion 13c, and between the first cylindrical portion 13c and the second inclined portion 13d and the second cylindrical portion 13e. A space (not shown) is formed, and this space (not shown) prevents dust accumulated in the dust accumulation space 2b from flying up to the centrifugal separation space 2a. The second cylindrical portion 13e is configured such that the lower end of the second cylindrical portion 13e abuts on a lower lid body 15 described later. Further, a fitting claw portion (not shown) extending from the first extension portion 13 toward the primary filter attachment frame 11 side is provided at the end of the first extension portion 13 on the primary filter attachment frame 11 side. Z). Further, a fitting projection (not shown) that fits with the fitting claw (not shown) is provided at a position corresponding to the fitting claw (not shown) inside the primary filter mounting frame 11. The first extending portion 13 is attached to the lower end of the primary filter attachment frame 11 by fitting the fitting claw portion (not shown) and the fitting projection portion (not shown). . Here, in this embodiment, the first extension is attached to the lower end of the primary filter mounting frame 11 by fitting a fitting claw part (not shown) and a fitting projection part (not shown). Although the structure which attaches the part 13 was demonstrated, the 1st extension part 13 may be attached to the lower end of the primary filter attachment frame 11 by means, such as welding.

Between the primary filter 10 and the 1st extension part 13, the 2nd extension part 14 extended toward the direction away from the primary filter 10 is provided. In addition, the second extending portion 14 is provided with a fitting hole portion (not shown) into which a fitting claw portion (not shown) provided in the first extending portion 13 is inserted. In the second extension portion 14, the fitting claw portion (not shown) of the first extension portion 13 is inserted into the fitting hole portion (not shown) of the second extension portion 14. Thus, the fitting portion of the first extension portion 13 (not shown) and the fitting protrusion portion (not shown) of the primary filter mounting frame 11 are fitted together, so that the primary filter mounting frame 11 and It is sandwiched between the first extension portion 13. Further, the second extending portion 14 is formed to be curved with a predetermined curvature so as to be convex toward the primary filter 10 side. In addition, the second extending portion 14 includes an end portion on the outer peripheral side of the second extending portion 14 and the dust collector main body 9 and an end portion on the outer peripheral side of the second extending portion 14. A gap (not shown) is formed between the first extending portion 13 and the first extending portion 13.

  The lower lid body 15 is rotatably attached to a hinge part 20 provided at the lower front part of the dust collector main body 9 and is connected to a lower end of the dust collector main body 9 by a buckle part 21 provided on the dust collector main body 9. Is held by the dust collector main body 9 in a state in which the opening (not shown) is closed. Further, a first seal member 22 is disposed at a position where the lower lid body 15 contacts the dust collector main body 9, and the first lid member 15 causes the lower lid body 15 to move to the dust collector main body 9. The airtightness between the dust collector main body 9 and the lower lid 15 is maintained in a state in which an opening (not shown) at the lower end of the dust collector is closed. Further, a second seal member 23 is disposed at a position where the lower lid body 15 is in contact with the second cylindrical portion 13e, and the lower lid body 15 is attached to the dust collector main body by the second seal member 23. The airtightness between the second cylindrical portion 13e and the lower lid 15 is maintained in a state in which an opening (not shown) at the lower end of 9 is closed. In addition, the lower lid 15 is operated by a user operating an opening / closing operation unit 25 provided on the upper lid 16 to be described later, whereby the slider 24 provided at the rear part of the dust collector main body 9 is pushed downward. By rotating the buckle portion 21 by the slider 24, the engagement between the lower lid 15 and the buckle portion 21 is released, and the opening (not shown) at the lower end of the dust collector main body 9 is opened. It is configured.

  In the state where the primary filter mounting frame 11 and the secondary filter 12 are mounted in the dust collector main body 9, the upper lid body 16 has an opening (not shown) at the upper end of the dust collector main body 9 and the secondary filter 12. It is detachably attached to the upper part of the dust collector main body 9 so as to cover the upper surface. A drive unit 19 that drives the dust removing unit 18 is built in the upper lid 16. Further, the suction air after the dust is removed by the primary filter 10 and the secondary filter 12 flows into the dust collector 2 from the inlet 9a of the dust collector body 9 to the rear portion of the upper lid body 16. An outlet 16a for discharging to the outside of the dust collector 2 is provided. In addition, at the rear part of the upper surface of the upper lid body 16, an opening (not shown) on the lower end side of the dust collector main body 9 is closed between the lower lid body 15 and the buckle portion 21 with the lower lid body 15 being closed. An opening / closing operation unit 25 for releasing the engagement is arranged. Further, the upper lid body 16 is a fitting convex portion (not shown) in which a pair of buckle portions 26 rotatably disposed on the upper portion of the dust collector main body 9 are provided at positions corresponding to the buckle portions 26 of the upper lid body 16. And the dust collector main body 9 is attached.

  In addition, a substantially U-shaped handle 17 that is used when the user removes the dust collector 2 from the cleaner body 1 and carries the dust collector 2 is pivotally attached to the upper lid 16. It is supported. An urging means (not shown) for urging the handle 17 in the direction from the housed state to the inverted state is attached to a rotation shaft (not shown) of the handle 17. Further, the end of the handle 17 on the side of the rotating shaft (not shown) is located above the dust collector 2 from the end of the handle 17 on the side of the rotating shaft (not shown) when the handle 17 is stored. A first engagement claw portion 17a extending toward the top is formed. The first engagement claw portion 17a engages with a third engagement recess 31a formed in a body handle 31 of the cleaner body 1 described later in a state where the dust collector 2 is attached to the cleaner body 1. The vacuum cleaner main body 1 holds the dust collector 2, and in the inverted state of the handle 17, the cleaner 17 is engaged with the first engaging recess 16 b formed on the upper surface of the upper lid body 16, so that the handle 17 is in the inverted state. It is configured to hold.

A second engaging recess 17 b is formed at the center of the handle 17. In addition, the front lid 16 is engaged with a second engaging recess 17b formed at the center of the handle 17, and accommodates the handle 17 against the biasing force of a biasing means (not shown). A second engagement claw portion 16c that is held in a state is provided. Further, a second engaging recess 17b formed in the handle 17 and a second engaging claw portion 16c provided in the upper lid 16 are engaged with the front portion of the upper lid 16 so that the handle 17 is stored. An engagement release operation part 27 for releasing the engagement between the second engagement recess 17b and the second engagement claw part 16c is provided in the state where the engagement release operation part 27 is held. 27 is formed integrally with the second engaging claw portion 16c. A coil spring 28 for urging the disengagement operation part 27 from the inside of the upper cover body 16 toward the outside of the upper cover body 16 is arranged on the back surface of the disengagement operation part 27, and the second engagement The claw portion 16 c and the disengagement operation portion 27 are slidably provided inside the upper lid body 16 so as to protrude from the inside of the upper lid body 16 to the outside of the upper lid body 16.

  As shown in FIGS. 5 to 9, the cleaner body 1 is composed of a lower frame body 29 that forms the lower surface of the cleaner body 1 and an upper frame body 30 that forms the upper surface of the cleaner body 1. The lower frame body 29 and the upper frame body 30 are coupled to each other by a claw, a screw or the like. A main body handle 31 held by a user when carrying the cleaner main body 1 is attached to an upper portion of the cleaner main body 1, that is, an upper portion of the upper frame body 30. When the dust collector 2 is attached to the cleaner body 1, a third engagement that engages with a first engagement claw portion 17 a provided on the handle 17 of the dust collector 2 is provided at both ends of the A recess 31a is provided. In addition, a pair of traveling wheels 32 are rotatably attached to both sides of the vacuum cleaner main body 1, that is, to both sides of the lower frame 29. Further, a traveling caster 33 is rotatably attached to the front portion of the lower surface of the cleaner body 1, that is, in front of the lower surface of the lower frame 29.

  At the rear of the cleaner body 1, there is provided an electric blower chamber 35 containing an electric blower 34 that generates suction air. In addition, a power cord take-up device 36 for winding a power cord (not shown) connected to a commercial power source is disposed at the rear of the cleaner body 1.

  In the electric blower 34, an upper support rubber (not shown) and a lower support rubber (not shown) formed of an elastic material attached to the upper and lower parts of the electric blower 34 are arranged on the outer periphery of the electric blower 34. It is arranged in the electric blower chamber 35 in a state of being sandwiched by an electric blower case 37 that covers the outer periphery of the electric blower 34. In addition, a discharge port 37 a for discharging the exhaust air discharged from the electric blower 34 to the outside of the electric blower case 37, that is, the electric blower chamber 35 is provided at the front portion of the electric blower case 37. Further, an exhaust filter 37 b that collects dust contained in the exhaust air discharged from the electric blower 34 is disposed at the discharge port 37 a of the electric blower case 37.

Below the electric blower case 37 disposed in the electric blower chamber 35, that is, between the lower frame body 29 and the electric blower case 37, the exhaust air discharged from the discharge port 37 a of the electric blower case 37 is cleaned. An exhaust air passage 38 that leads to the exhaust port 1 b formed at the rear of the main body 1 is formed, and the exhaust air discharged from the electric blower 34 enters the electric blower chamber 35 from the discharge port 37 a of the electric blower case 37. After that, it is led to the exhaust port 1b through the exhaust air passage 38, and is discharged from the exhaust port 1b to the outside of the cleaner body 1. In addition, a first sound absorbing material 39 that absorbs noise such as wind noise included in the exhaust air discharged from the electric blower 34 is disposed over substantially the entire length of the exhaust air passage 38 below the exhaust air passage 38. . Here, in the present embodiment, as the first sound absorbing material 39, a nonwoven fabric manufactured by a spunbonding method using polyethylene or polypropylene having a breathability of 20 to 70 cc / cm ² / sec as a material is used as a surface layer. A sound-absorbing material having a basis weight of 300 to 600 g / m ² made of a nonwoven fabric produced by a bond, heat bond or melt blow method is used.

In the state where the dust collector 2 is attached to the cleaner body 1 on the upstream side of the electric blower 34, the air discharged from the outlet 16 a provided in the dust collector 2 is sucked into the electric blower 34. A suction air passage 40 leading to a mouth (not shown) is provided. One end of the suction air passage 40 communicates with a first communication port 37 c provided at a position facing the suction port (not shown) of the electric blower 34 of the electric blower case 37. Further, the other end of the suction air passage 40 is formed with a lattice-shaped second communication port 40a communicating with the outflow port 16a provided in the dust collector 2, and the suction air passage 40 is connected to the dust collector. In a state in which 2 is attached to the cleaner body 1, the dust collector 2 is brought into contact with the outlet 16 a provided in the dust collector 2 and the second communication port 40 a provided in the suction air passage 40. It is comprised so that it may communicate with the inside. Furthermore, when the dust collector 2 is attached to the cleaner body 1, the second communication port 40 a is in pressure contact with the outlet 16 a of the dust collector 2, and the outlet 16 a of the dust collector 2 and the suction air A third seal member 41 that maintains airtightness between the passage 40 and the second communication port 40a is disposed.

  A dust collector 2 that separates and collects dust sucked by the suction air generated by the electric blower 34 is detachably attached to the front portion of the cleaner body 1, that is, the front portion of the upper frame 30. A dust device attachment portion 42 is provided, and the dust collector 2 is attached to the dust collector attachment portion 42 at a predetermined angle so that the dust collector 2 is attached to the cleaner body 1 at a predetermined angle. Here, in this Embodiment, it is comprised so that the dust collector 2 may be attached to the cleaner main body 1 in the state inclined about 45 degree | times.

  A first opening into which the second communication port 40 a provided in the suction air passage 40 is inserted at a position corresponding to the second communication port 40 a provided in the suction air passage 40 of the dust collector attachment portion 42. The part 42a is provided, and the second communication port 40a is exposed to the upper part of the dust collector attachment part 42 from the first opening 42a provided in the dust collector attachment part 42, whereby the dust collector The two outlets 16a are in contact with each other. Moreover, the 2nd opening part 42b is provided in the position which opposes the inflow port 9a provided in the dust collector 2 of the dust collector attachment part 42. As shown in FIG. The second opening 42b is in pressure contact with the inlet 9a of the dust collector 2 in a state in which the dust collector 2 is attached to the cleaner body 1, and is connected to the inlet 9a of the dust collector 2 and the second opening 42b. A fourth seal member 42c that maintains airtightness with the opening 42b is disposed. Further, in the cleaner body 1, suction air is connected at one end to the air inlet 1 a of the cleaner body 1 and at the other end to the second opening 42 b provided in the dust collector attachment portion 42. A passage 43 is provided, and dust generated by the electric blower 34 and sucked by the suction air and flowing into the interior of the cleaner body 1 from the intake port 1a of the cleaner body 1 is sucked into the suction air passage 43 and the second air passage. It is comprised so that it may flow in into the inside of the dust collector 2 from the inflow port 9a provided in the dust collector 2 through the opening part 42b.

  A first space 44 is formed inside the cleaner body 1 below the dust collector attachment portion 42. The first space portion 44 is partitioned from the electric blower chamber 35 by a partition wall 45 extending from the lower frame body 29 toward the upper frame body 30, and the first space portion 44 includes the lower frame body 29, The upper frame body 30 and the partition wall 45 are formed. In addition, a suction air passage 43 that guides the dust flowing into the cleaner body 1 to the dust collector 2 is disposed in the first space 44, and the lower frame body 29 and the upper frame body 30. A second space portion 47 formed by being separated from the first space portion 44 by a case body 46 provided separately from the first space portion 44 is formed.

The case body 46 has an open surface on the lower frame body 29 side of the case body 46 and a surface on the partition wall 45 side of the case body 46, and an end of the case body 46 on the lower frame body 29 side and the case body 46. The end portions of the partition wall 45 are disposed so as to be in contact with the lower frame body 29 and the partition wall 45, respectively, and the second space portion 47 is formed by the lower frame body 29, the partition wall 45, and the case body 46. ing. The second space 47 is formed so that a cross section in a plane parallel to the surface to be cleaned has a substantially square shape, and the second space 47 is discharged from the electric blower 34 to the inside. A second sound absorbing material 48 for absorbing noise such as wind noise included in the exhausted air is disposed. Here, in the present embodiment, a sound absorbing material having a density of 50 to 80 kg / m ³ is used as the second sound absorbing material 48.

The partition 45 forming the second space 47 communicates with the second space 47 formed inside the case body 46 and the exhaust air passage 38 formed in the electric blower chamber 35. A communication port 45a is formed. Further, the first space portion 44 is attached to the end portion of the case body 46 on the lower frame body 29 side and the end portion of the partition wall 45 of the case body 46 with the case body 46 attached to the first space portion 44. A fifth seal member (not shown) that maintains the airtightness between the first space portion 44 and the second space portion 47 is provided by the fifth seal member (not shown). The airtightness between the second space 47 and the second space 47 is maintained, and the first space 44 is configured not to communicate with the exhaust air passage 38.

  About the vacuum cleaner 100 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  A state in which the dust collector 2 is attached to the cleaner body 1, that is, a first engaging recess 31 a formed in the body handle 31 of the cleaner body 1 and a handle 17 of the dust collector 2. When the user holds the handle portion 6 and starts the operation of the vacuum cleaner 100 in a state where the engaging claw portion 17a is engaged and the handle 17 of the dust collector 2 is in the retracted state. The suction blow is generated by the electric blower 34 and the suction force is generated. When the user moves the suction tool 3 on the surface to be cleaned in this state, dust on the surface to be cleaned is sucked together with the suction air from the suction tool 3. Suction air containing dust sucked from the suction tool 3 flows into the cleaner body 1 through the extension pipe 5 and the hose 4 from the air inlet 1a. Suction air containing dust that has flowed into the cleaner body 1 flows from the inlet 9a provided in the dust collector 2 into the dust collector 2 through the suction air passage 40 and the second opening 42b. Inflow.

  The air containing dust that has flowed into the dust collector 2 flows into the centrifugal separation space 2a formed by the inner surface of the dust collector main body 9 and the primary filter 10, and the swirl flow generated in the centrifugal separation space 2a. As a result, the dust and air including coarse dust and fine dust are centrifuged. The dust centrifuged in the centrifugal separation space 2a passes through the dust passage 2c formed between the first extension 13 and the second extension 14 and the inner surface of the dust collector main body 9, The dust is accumulated in the dust accumulating space 2 b formed in the lower part of the dust collector 2 by the inner surface of the dust collector main body 9, the first extension 13, and the lower lid 15.

  Here, as shown in FIG. 4, in the present embodiment, since the width H1 of the dust passage portion 2c is formed to be smaller than the width H2 of the centrifugal separation space portion 2a, the centrifugal separation space portion It is possible to increase the flow velocity of the air flowing from 2a into the dust accumulation space 2b, and to generate a pressing force from the centrifugal separation space 2a toward the dust accumulation space 2b. Therefore, the dust accumulated in the dust accumulation space 2b can be compressed, and the dust accumulated in the dust accumulation space 2b can be prevented from returning to the centrifugal separation space 2a.

Further, the air that flows into the dust accumulation space 2b together with the dust flows from the dust accumulation space 2b to the centrifugal separation space 2a by the suction force of the electric blower 34. At this time, the air is accumulated in the dust accumulation space 2b. Dust may be guided to the centrifugal separation space 2a by the flow of air flowing from the dust accumulation space 2b to the centrifugal separation space 2a and may adhere to the primary filter 10. Therefore, in the present embodiment, the first extension 13 is formed in the lower part of the primary filter 10, and the second extension 14 is provided between the primary filter 10 and the first extension 13. By forming, the dust that tries to return to the centrifugal separation space 2a from the dust accumulation space 2b together with the air flowing into the dust accumulation space 2b is away from the primary filter 10, that is, the rotation of the centrifugal separation space 2a. Dust that is guided to the region where the flow velocity of the airflow is fast and returns from the dust accumulation space portion 2b to the centrifugal separation space portion 2a is transferred to the dust accumulation space portion 2b together with the dust flowing from the centrifugal separation space portion 2a to the dust accumulation space portion 2b. It is possible to prevent the dust accumulated in the dust accumulation space 2b from returning to the centrifugal separation space 2a and adhering to the primary filter 10. In the present embodiment, the first cylindrical portion is formed between the first inclined portion 13a and the vertical portion 13b of the first extending portion 13 formed at the lower portion of the primary filter 10 and the second cylindrical portion 13e. A portion 13c is provided, and a second extending portion 14 is formed between the primary filter 10 and the first extending portion 13, and the air flowing into the dust accumulation space portion 2b flows to the centrifugal separation space portion 2a. By increasing the length of the flow path, it is possible to prevent the dust accumulated in the dust accumulation space portion 2b from flowing into the centrifugal separation space portion 2a together with the air flowing from the dust accumulation space portion 2b to the centrifugal separation space portion 2a. ing.

  The air from which the dust has been centrifuged in the centrifugal separation space 2a passes through the primary filter 10 and then passes through the secondary filter 12, so that it is not centrifuged in the centrifugal separation space 2a, and the primary filter 10 together with the air. Dust that has passed through the secondary filter 12 is collected. Only air that does not contain dust passes through the secondary filter 12 and is discharged from the outlet 16 a of the dust collector 2 to the outside of the dust collector 2.

  The dust collected by the secondary filter 12 is removed from the secondary filter 12 by applying vibration from the drive unit 19 to the dust removing unit 18 provided above the secondary filter 12 when the operation of the electric blower 34 is stopped. It is peeled off. The dust peeled off from the secondary filter 12 is guided to the lower side of the primary filter 10 through the space inside the primary filter mounting frame 11. The dust guided to the lower side of the primary filter 10 is guided to the inside of the second cylindrical portion 13e by the second inclined portion 13d formed in the first extending portion 13, and the second cylindrical portion 13e. Accumulated inside.

  The air discharged from the outlet 16a of the dust collector 2 flows into the cleaner body 1 from the second communication port 40a and passes through the suction air passage 40 formed inside the cleaner body 1. As a result, the air reaches the air inlet of the electric blower 34 and flows into the electric blower 34. And the air which flowed in the inside of the electric blower 34 is discharged | emitted to the inside of the electric blower case 37 arrange | positioned in the outer periphery of the electric blower 34, and the discharge port 37a electric blower chamber formed in the electric blower case 37 after that. 35 is discharged into the interior. The exhaust air discharged into the electric blower chamber 35 is directed to an exhaust port 1b formed in the cleaner body 1 through an exhaust air passage 38 formed between the electric blower case 37 and the lower frame body 29. The exhaust port 1b is discharged to the outside of the cleaner body 1. At this time, in the present embodiment, since the first sound absorbing material 39 is disposed over substantially the entire length of the exhaust air passage 38, noise such as wind noise included in the exhaust air discharged from the electric blower 34 is reduced. The sound absorbing material 39 absorbs sound.

  Further, in the present embodiment, since the second space portion 47 communicating with the exhaust air passage 38 is formed in the middle of the exhaust air passage 38, it is discharged from the electric blower 34 and passes through the exhaust air passage 38. Part of the exhaust air discharged from the exhaust port 1b of the cleaner body 1 to the outside of the cleaner body 1 flows into the second space 47 and is included in the exhaust air discharged from the electric blower 34. Noise such as wind noise is reduced in the second space 47. That is, a part of the exhaust air discharged from the electric blower 34 and discharged from the exhaust port 1b of the cleaner body 1 to the outside of the cleaner body 1 through the exhaust air passage 38 is connected to the electric blower chamber 35 and the first air blower. The space 44 flows from the third communication port 45 a formed in the partition wall 45 into the second space 47. The exhaust wind that has flowed into the second space 47 is reduced in the sound pressure of the noise contained in the exhaust wind by the second space 47 and the second air disposed in the second space 47. Sound is absorbed by the sound absorbing material 48, and noise contained in the exhaust air is reduced. The exhaust air whose noise has been reduced in the second space 47 flows into the exhaust air passage 38 from the third communication port 45a formed in the partition wall 45, and the exhaust air passage 38 passes through the exhaust air passage 38. It is discharged from the exhaust port 1b to the outside of the cleaner body 1.

When the user throws away the dust accumulated in the dust collector 2, the user opposes the urging force of the coil spring 28, the upper part in front of the dust collector 2, that is, the upper cover 16 of the dust collector 2. By operating the disengagement operation portion 27 provided at the front portion, the engagement between the second engagement recess portion 17b of the handle 17 and the second engagement claw portion 16c, and the body handle 31 of the cleaner body 1 By disengaging the third engaging recess 31a provided on the first engaging claw portion 17a provided on the handle 17 of the dust collector 2, the dust collector 2 is attached to the cleaner body 1. The dust accumulated in the dust collector 2 is discarded. When the disengagement operation unit 27 is operated by the user, the second of the handle 17 is
The engagement recess 17b and the second engagement claw portion 16c are disengaged, and the handle 17 is rotated from the housed state to the inverted state by the urging force of the urging means (not shown). When the handle 17 is rotated from the retracted state to the inverted state by the urging force of the urging means (not shown), a third engagement provided on the main body handle 31 is interlocked with the rotation of the handle 17. The engagement between the joint recess 31a and the first engagement claw portion 17a provided on the handle 17 is released. In this state, the user can remove the dust collector 2 from the cleaner body 1 by holding the handle 17 and lifting the dust collector 2 above the cleaner body 1.

  After removing the dust collector 2 from the cleaner body 1, the user further rotates the handle 17 so that the handle 17 is in an inverted state. At this time, the user inverts the handle 17 by 90 degrees or more with respect to the upper surface of the upper lid body 16, and the first engagement claw portion 17 a provided on the handle 17 and the first engagement recess portion provided on the upper lid body 16. 16b is engaged, and the handle 17 is held and fixed in an inverted state. In this state, the user holds the handle 17, moves the dust collector 2 onto a trash can or the like, and operates the opening / closing operation unit 25 formed on the rear part of the upper surface of the upper lid body 16. When the user operates the opening / closing operation part 25, the slider 24 is pushed down, the buckle part 21 rotates, the engagement between the lower lid body 15 and the buckle part 21 is released, and the lower lid body 15 rotates about the hinge portion 20, the opening (not shown) on the lower end side of the dust collector main body 9 is released, and the dust accumulated in the dust accumulation space 2 b of the dust collector 2 is collected. It is discharged from the opening (not shown) on the lower end side of the apparatus body 9 to the outside of the dust collector 2.

  As described above, in the present embodiment, the first sound absorbing material 39 is disposed in the exhaust air passage 38 that guides the exhaust air discharged from the electric blower 34 to the outside of the cleaner body 1. Noise such as wind noise included in the exhaust air discharged from the electric blower 34 can be absorbed by the first sound absorbing material 39, and noise generated inside the cleaner body 1 can be reduced.

  Further, in the present embodiment, since the second space portion 47 communicating with the exhaust air passage 38 is formed in the middle of the exhaust air passage 38, it is discharged from the electric blower 34 and passes through the exhaust air passage 38. Then, a part of the exhaust air exhausted from the exhaust port 1b of the cleaner body 1 to the outside of the cleaner body 1 is guided to the inside of the second space portion 47, and the exhaust gas that has flowed into the second space portion 47 The sound pressure of the noise contained in the wind can be reduced by the second space 47, and the noise contained in the exhaust wind is absorbed by the second sound absorbing material 48 disposed in the second space 47. be able to. Therefore, the noise generated inside the cleaner body 1 can be reduced by the second space 47, and the quietness of the vacuum cleaner 100 can be improved.

  Furthermore, in the present embodiment, the second space portion 47 does not directly communicate with the outside of the cleaner body 1 but communicates only with the exhaust air passage 38, and thus is generated by the electric blower 34. 34 that noises such as wind noise flowing into the second space 47 and wind noise generated in the second space 47 together with a part of the exhaust air discharged from 34 are transmitted to the outside of the cleaner body 1. Can be sufficiently prevented. Therefore, the noise generated inside the cleaner body 1 can be reliably reduced in the second space 47, and the quietness of the vacuum cleaner 100 can be improved.

  Further, in the present embodiment, the first space 44 is formed so as not to communicate with the exhaust air passage 38, and the second space 47 is formed inside the first space 44. Therefore, a double wall structure can be formed by the first space portion 44 and the second space portion 47, and is transmitted from the inside of the second space portion 47 to the outside of the second space portion 47. The noise that has been trapped can be reduced by the first space 44. Therefore, the first space portion 44 and the second space portion 47 can sufficiently prevent noise generated inside the cleaner body 1 from being transmitted to the outside of the cleaner body 1. 100 quietness can be improved.

Furthermore, in the present embodiment, the suction air passage 43 that guides the dust sucked by the suction air generated by the electric blower 34 to the dust collector 2 is formed inside the first space 44. A double wall structure can be formed by the first space 44 and the suction air passage 43. Therefore, noise such as wind noise generated in the suction air passage 43 can be sufficiently prevented from being transmitted to the outside of the vacuum cleaner body 1, and the quietness of the vacuum cleaner 100 can be further improved.

  In the present embodiment, since the first space 44 is formed inside the cleaner body 1 below the dust collector attachment portion 42, the cleaner body below the dust collector attachment portion 42. The space formed inside 1 can be used effectively. Therefore, it is not necessary to separately form a space for forming the first space portion 44 in the cleaner body 1, and it is possible to prevent the cleaner body 1 from becoming large.

(Embodiment 2)
Embodiment 2 of the vacuum cleaner of the present invention will be described with reference to FIGS. 10 and 11. In addition, the same code | symbol is attached | subjected to the part which is the same as that of Embodiment 1 mentioned above, or it corresponds, and the description is abbreviate | omitted.

  FIG. 10 is a cross-sectional view of the cleaner body on a surface perpendicular to the surface to be cleaned in Embodiment 2 of the present invention. Moreover, FIG. 11 is sectional drawing of the cleaner body in the surface parallel to the to-be-cleaned surface in Embodiment 2 of this invention.

  As shown in FIGS. 10 and 11, in the present embodiment, the case body 46 forming the second space 47 has a height T1 on the exhaust air passage 38 side of the case body 46 such that the exhaust air of the case body 46 is exhausted. It is formed to be higher than the height T2 on the opposite side to the path 38. The case body 46 is formed so that the width H3 of the case body 46 on the side of the exhaust air passage 38 is larger than the width H4 of the case body 46 on the side opposite to the exhaust air passage 38. The second space 47 has a cross-sectional area of the second space 47 on the side of the exhaust air passage 38 that is larger than a cross-sectional area of the second space 47 opposite to the exhaust air passage 38. The second space 47 is formed so that the cross-sectional area of the second space 47 gradually decreases from the exhaust air passage 38 side to the opposite side of the exhaust air passage 38. The second space 47 is formed so that a cross section in a plane parallel to the surface to be cleaned has a substantially trapezoidal shape.

  About the vacuum cleaner 100 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  When the user starts the operation of the vacuum cleaner 100 with the dust collector 2 attached to the cleaner body 1, suction air is generated by the electric blower 34 and suction force is generated. When the user moves the suction tool 3 on the surface to be cleaned in this state, dust on the surface to be cleaned is sucked together with the suction air from the suction tool 3. Suction air containing dust sucked from the suction tool 3 flows into the cleaner body 1 through the extension pipe 5 and the hose 4 from the air inlet 1a. Suction air containing dust that has flowed into the cleaner body 1 flows from the inlet 9a provided in the dust collector 2 into the dust collector 2 through the suction air passage 40 and the second opening 42b. Inflow.

  The air containing dust that has flowed into the dust collector 2 flows into the centrifugal separation space 2a formed inside the dust collection device 2, and coarse dust and fine dust are generated by the swirling flow generated in the centrifugal separation space 2a. The dust containing air and the like are centrifuged. The dust centrifuged in the centrifugal separation space 2a passes through the dust passage 2c formed in the dust collector 2, and is accumulated in the dust storage space 2b formed in the lower part of the dust collector 2. .

The air from which the dust has been centrifuged in the centrifugal separation space 2 a passes through the primary filter 10 and the secondary filter 12, and is discharged from the outlet 16 a of the dust collector 2 to the outside of the dust collector 2.
The air discharged from the outlet 16a of the dust collector 2 flows into the cleaner body 1 from the second communication port 40a and passes through the suction air passage 40 formed inside the cleaner body 1. As a result, the air reaches the air inlet of the electric blower 34 and flows into the electric blower 34. And the air which flowed in the inside of the electric blower 34 is discharged | emitted to the inside of the electric blower case 37 arrange | positioned in the outer periphery of the electric blower 34, and the discharge port 37a electric blower chamber formed in the electric blower case 37 after that. 35 is discharged into the interior.

  The exhaust air discharged into the electric blower chamber 35 is directed to an exhaust port 1b formed in the cleaner body 1 through an exhaust air passage 38 formed between the electric blower case 37 and the lower frame body 29. The exhaust port 1b is discharged to the outside of the cleaner body 1. At this time, in the present embodiment, since the first sound absorbing material 39 is disposed over substantially the entire length of the exhaust air passage 38, noise such as wind noise included in the exhaust air discharged from the electric blower 34 is reduced. One sound absorbing material 39 can absorb sound, and noise such as wind noise included in the exhaust air discharged from the electric blower 34 can be reduced by the exhaust air passage 38.

  Further, in the present embodiment, since the second space portion 47 communicating with the exhaust air passage 38 is formed in the middle of the exhaust air passage 38, it is discharged from the electric blower 34 and passes through the exhaust air passage 38. Part of the exhaust air discharged from the exhaust port 1b of the cleaner body 1 to the outside of the cleaner body 1 flows into the second space 47 through the third communication port 45a formed in the partition wall 45. To do. The exhaust wind that has flowed into the second space 47 has the sound pressure of noise contained in the exhaust wind reduced by the second space 47 and the second sound absorbing material disposed in the second space 47. The sound is absorbed by 48 and the noise contained in the exhaust air is reduced. Then, the exhaust air whose noise is reduced in the second space 47 flows into the exhaust air passage 38 from the third communication port 45a formed in the partition wall 45, and the main body of the vacuum cleaner through the exhaust air passage 38. 1 is discharged from the exhaust port 1b to the outside of the cleaner body 1.

  Here, the noise generated inside the cleaner body 1 includes sounds of various frequencies such as wind noise caused by exhaust air exhausted from the electric blower 34 and motor sound generated by the rotation of the electric blower 34. Yes. Therefore, the second space 47 is squared so that the cross-sectional area of the second space 47 on the exhaust air passage 38 side and the cross-sectional area of the second space 47 on the exhaust air passage 38 side are substantially the same. When formed into a shape, among noises generated inside the vacuum cleaner main body 1, it is possible to efficiently reduce the sound of a single frequency, but it is not possible to efficiently reduce the sound of a plurality of frequencies. There is a case. Therefore, in the present embodiment, the second space 47 has a cross-sectional area on the side of the exhaust air passage 38 that is larger than the cross-sectional area of the second space 47 on the side opposite to the exhaust air passage 38. The second space 47 is formed so that the cross-sectional area of the second space 47 gradually decreases from the exhaust air passage 38 side to the opposite side of the exhaust air passage 38. A portion 47 is formed. With this configuration, the distance from the third communication port 45a formed in the partition wall 45 to the wall surface of the second space portion 47 can be changed inside the second space portion 47. The sound pressure of the sound having a plurality of frequencies can be reduced inside the space portion 47. Therefore, the second space 47 can efficiently reduce sounds of various frequencies included in noise such as wind noise flowing into the second space 47 and wind noise generated in the second space 47. The quietness of the vacuum cleaner 100 can be further improved. Further, since the second sound absorbing material 48 is disposed in the second space 47, the second sound absorbing material 48 disposed in the second space 47 47 flows into the second space 47. Sounds of various frequencies included in noise such as wind noise and wind noise generated in the second space 47 can be absorbed, and noise included in the exhaust wind can be reduced.

Further, in the present embodiment, the first space 44 is formed so as not to communicate with the exhaust air passage 38, and the second space 47 is formed inside the first space 44. Therefore, a double wall structure can be formed by the first space portion 44 and the second space portion 47, and is transmitted from the inside of the second space portion 47 to the outside of the second space portion 47. The first noise
It can be reduced by the space portion 44. Therefore, the first space portion 44 and the second space portion 47 can sufficiently prevent noise generated inside the cleaner body 1 from being transmitted to the outside of the cleaner body 1. 100 quietness can be improved.

  Furthermore, in the present embodiment, the suction air passage 43 that guides the dust sucked by the suction air generated by the electric blower 34 to the dust collector 2 is formed inside the first space 44. A double wall structure can be formed by the first space 44 and the suction air passage 43. Therefore, noise such as wind noise generated in the suction air passage 43 can be sufficiently prevented from being transmitted to the outside of the vacuum cleaner body 1, and the quietness of the vacuum cleaner 100 can be further improved.

  In the present embodiment, the second space 47 has a cross-sectional area of the second space 47 on the side of the exhaust air path 38 opposite to the exhaust air path 38 of the second space 47. The cross-sectional area of the second space 47 is gradually reduced from the exhaust air passage 38 side to the opposite side of the exhaust air passage 38 from the exhaust air passage 38 side. Although the configuration in which the cross section in the plane parallel to the plane is substantially trapezoidal has been described, as shown in FIG. 12, the second space portion 47 has the exhaust air of the second space portion 47. The cross-sectional area on the side of the path 38 is larger than the cross-sectional area of the second space portion 47 on the side opposite to the exhaust air path 38, and as it goes from the exhaust air path 38 side to the side opposite to the exhaust air path 38. The cross section of the second space 47 is formed so as to be gradually reduced, and the cross section in a plane parallel to the surface to be cleaned is a floor. It may be formed such that Jo.

  FIG. 12 is a cross-sectional view of the cleaner body showing a modification of the second space portion in the second embodiment of the present invention.

  As shown in FIG. 12, the case body 46 is connected to the exhaust air passage 38 of the case body 46 from the third communication port 45 a formed in the partition wall 45 in the case body 46, that is, in the second space 47. Are formed such that the distances to the opposite surface are L1, L2, and L3 (L1 <L2 <L3). Also in this configuration, since the distance from the third communication port 45a formed in the partition wall 45 to the wall surface of the second space 47 can be changed inside the second space 47, the second The sound pressure of the sound having a plurality of frequencies can be reduced inside the space 47. Therefore, the second space 47 can efficiently reduce sounds of various frequencies included in noise such as wind noise flowing into the second space 47 and wind noise generated in the second space 47. The quietness of the vacuum cleaner 100 can be further improved.

  As mentioned above, although Embodiment 1 and Embodiment 2 of the vacuum cleaner of this invention were demonstrated, the vacuum cleaner of this invention is limited to the vacuum cleaner of Embodiment 1 and Embodiment 2 mentioned above. is not.

  For example, in the vacuum cleaner of the second embodiment described above, the second space 47 has a cross-sectional area on the exhaust air passage 38 side of the second space 47 that is the same as the exhaust air passage 38 of the second space 47. Is larger than the cross-sectional area on the opposite side, and is formed such that the cross-sectional area of the second space portion 47 gradually decreases from the exhaust air passage 38 side to the opposite side of the exhaust air passage 38. In the above description, the configuration in which the cross section of the surface parallel to the surface to be cleaned is formed in a substantially trapezoidal shape has been described. For example, the second space portion 47 may be cut off on the exhaust air passage 38 side of the second space portion 47. The area is smaller than the cross-sectional area of the second space 47 opposite to the exhaust air passage 38, and the exhaust air The exhaust air passage 38 from the 38 side taken to go to the opposite side, cross-sectional area of the second space portion 47 may be formed so as to gradually become smaller.

In the vacuum cleaners of the first and second embodiments described above, the second space portion 47 and the exhaust air passage 38 are directly communicated by the third communication port 45 a formed in the partition wall 45. However, a filter member (not shown) may be disposed in the third communication port 45a that allows the second space 47 and the exhaust air passage 38 to communicate with each other. With this configuration, among the dust contained in the exhaust air discharged from the electric blower 34, the dust discharged into the electric blower chamber 35 without being removed by the exhaust filter 37b disposed at the discharge port 37a of the electric blower case 37. Can be prevented from flowing into the second space 47. Therefore, it is possible to prevent the dust included in the exhaust air discharged from the electric blower 34 from adhering to the second sound absorbing material 48 disposed inside the second space 47, and the second sound absorbing material 48. It is possible to sufficiently prevent the sound absorption performance from being deteriorated. Here, the filter member disposed in the third communication port 45a has a density of 20 to 40 kg / cm ³ and a ventilation resistance per area of 10 cm ^{2 of} 10 mmH ₂ O or less at a ventilation air velocity of 0.8 m / sec. It is preferable to use a non-woven fabric or a foamed urethane foam material. As a result, the exhaust air discharged from the electric blower 34 can be efficiently guided to the second space 47, and the efficiency of the electric blower 34 can be sufficiently prevented from being reduced due to pressure loss caused by the filter member. Can do.

  Furthermore, in the vacuum cleaner of Embodiment 1 and Embodiment 2 described above, the case body 46 has a surface on the lower frame body 29 side of the case body 46 and a surface on the partition wall 45 side of the case body 46 open. In addition, the configuration has been described in which the end of the case body 46 on the lower frame body 29 side and the end of the partition wall 45 of the case body 46 are disposed so as to contact the lower frame body 29 and the partition wall 45, respectively. The case body 46 only needs to be formed so as to partition the first space portion 44 and the second space portion 47. For example, the case body 46 is open only on the surface on the partition wall 45 side of the case body 46. May be. Also with this configuration, the first space portion 44 and the second space portion 47 can be partitioned and formed, and a double wall structure is formed by the first space portion 44 and the second space portion 47. Since it can be formed, the noise transmitted through the second space 47 can be reduced by the first space 44.

  The vacuum cleaner of the present invention can reduce noise generated inside the vacuum cleaner in the first space portion and the second space portion, and can improve the quietness of the vacuum cleaner, It can be suitably applied to the field and application of household vacuum cleaners and industrial vacuum cleaners.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 1a Intake port 1b Exhaust port 2 Dust collector 2a Centrifugal space part 2b Dust storage space part 2c Dust passage part 3 Suction tool 4 Hose 5 Extension pipe 6 Handle part 7 Tip pipe 8 Connection pipe 9 Dust collector body 9a Inflow port 10 Primary filter 11 Primary filter mounting frame 12 Secondary filter 13 First extension portion 13a First inclined portion 13b Vertical portion 13c First cylindrical portion 13d Second inclined portion 13e Second cylindrical portion 14 Second extending portion 15 Lower lid body 16 Upper lid body 16a Outlet port 16b First engagement recess portion 16c Second engagement claw portion 17 Handle 17a First engagement claw portion 17b Second engagement recess portion 18 Dust removal Part 19 Drive part 20 Hinge part 21 Buckle part 22 First seal member 23 Second seal member 24 Slider 25 Opening / closing operation part 26 Buckle part 27 Engagement release Removal operation section 28 Coil spring 29 Lower frame body 30 Upper frame body 31 Handle 31a Third engagement recess 32 Wheel 33 Caster 34 Electric blower 35 Electric blower chamber 36 Power cord take-up device 37 Electric blower case 37a Discharge port 37b Exhaust filter 37c First communication port 38 Exhaust air passage 39 First sound absorbing material 40 Suction air passage 40a Second communication port 41 Third seal member 42 Dust collector attachment portion 42a First opening portion 42b Second opening portion 42c 4th sealing member 43 Suction air passage 44 1st space part 45 Partition 45a 3rd communication port 46 Case body 47 2nd space part 48 2nd sound absorption material 100 Electric vacuum cleaner

Claims (6)

A vacuum cleaner main body having an electric blower for generating suction air and having an exhaust port for discharging exhaust air discharged from the electric blower to the outside, and attached to the vacuum cleaner main body and generated by the electric blower A dust collector that collects dust sucked in by the suction air, an exhaust air passage that is provided inside the cleaner body, and that guides the exhaust air exhausted from the electric blower to the exhaust port; A first space provided inside the vacuum cleaner main body, and a second space provided inside the first space and separated from the first space, The first space portion is formed so as not to communicate with the exhaust air passage, and the second space portion is formed so as to communicate with the exhaust air passage, and is discharged from the electric blower. From the exhaust port through the exhaust air passage Part of the exhaust air is discharged to the outside of the serial cleaner body is discharged to the outside of the cleaner body from the exhaust port through the second space, the vacuum cleaner. The second space portion is formed such that a cross-sectional area of the second space portion on the exhaust air passage side is larger than a cross-sectional area of the second space portion on the side opposite to the exhaust air passage. The vacuum cleaner according to claim 1. A suction air passage for guiding dust sucked by the suction air generated by the electric blower to the dust collecting device is provided in the vacuum cleaner body, and the suction air passage is the first air passage. The vacuum cleaner of Claim 1 or 2 provided in the space part. The vacuum cleaner main body is provided with a dust collector mounting portion to which the dust collector is mounted, and the first space portion is inside the vacuum cleaner main body and of the dust collector mounting portion. The vacuum cleaner according to any one of claims 1 to 3, wherein the vacuum cleaner is formed at a lower portion. The vacuum cleaner according to any one of claims 1 to 4, wherein a sound absorbing material is disposed in the exhaust air passage and the second space portion. The second space portion has a staircase shape in the second space portion so that the distance between the surface of the second space portion facing the exhaust air passage and the exhaust air passage is different. The vacuum cleaner according to any one of claims 1 to 5, wherein the vacuum cleaner is formed.