JP4538043B2 - Vacuum cleaner - Google Patents

Description

  The present invention relates to a vacuum cleaner, and more particularly to a vacuum cleaner having an improved structure for mounting an electric blower.

  Generally, a vacuum cleaner collects on the floor together with air from the suction port provided at the tip of the suction hose communicated with the vacuum cleaner body by using the negative pressure generated by the rotation of the electric blower provided in the vacuum cleaner body. The floor is cleaned by sucking in dust and capturing the dust with a high-speed separation type dust removing means or filter built in the main body of the vacuum cleaner.

  In the electric blower used for the vacuum cleaner, vibration due to the rotational unbalance of the electric blower is transmitted to the main body, and unpleasant noise is generated. The conditions of the vibration isolation configuration for preventing vibration of such an electric blower are to support a position where vibration is small and soft enough, and the radial direction is the weight of the electric blower, and the axial direction is the electric blower. It is necessary to support the suction force.

  Therefore, between the vicinity of the center of gravity of the electric blower and the main body of the vacuum cleaner, there is a spring member installed via an outer ring provided on the main body of the vacuum cleaner, and an impact absorber installed with a gap between the motor and the main body of the vacuum cleaner. A vacuum cleaner that elastically supports an electric blower on a vacuum cleaner body using a rear elastic body for shock and a front elastic body for shock absorption that is installed with a gap between the outer periphery of the fan section and the main body has been proposed. (For example, refer to Patent Document 1).

However, in the electric vacuum cleaner described in Patent Document 1, since the motor is directly elastically supported by the main body of the vacuum cleaner, vibration propagates to the main body of the vacuum cleaner and the operation sound is not quiet.
Japanese Patent Laid-Open No. 5-84194

  The present invention has been made in consideration of the above-described circumstances, and an object thereof is to provide a vacuum cleaner that can be quietly operated while suppressing vibration and noise transmitted from the electric blower to the cleaner body.

In order to achieve the above-described object, the vacuum cleaner according to the present invention is provided in the suction air passage from the dust suction port for sucking dust to the suction opening of the electric blower provided with the fan case. Further, in a vacuum cleaner provided with dust removing means for removing dust contained in the air, a cover having a front surface part and a rear surface part covering the electric blower and having a front part and a rear face part, and the electric blower in the cover A spring member that elastically supports the cover, a front cover support member that supports the cover on the fan side of the cover, is made of an elastic material in a ring shape, and is fitted into an opening provided in the front portion, and has one end Is a ring-shaped elastic member made of an elastic material that is in contact with the fan case, and a ring-shaped elastic material that is externally fitted in a recess that is provided on the rear surface portion and into which a motor bearing portion of the electric blower is inserted. A cover supporting member, the outer periphery of the front portion is provided with a ring-shaped stepped portion, the stepped portion, the horizontal surface of the step portion in contact with the ring inner peripheral surface of said front cover support member The front cover support member is externally fitted such that the side surface of the stepped portion contacts the ring side surface, and the seal member is softer than the elastic material used for the front cover support member and the rear cover support member, In addition, it is formed with a bottomless bowl-shaped part that communicates with a bottomless dish-like part through a small-diameter part, and the dish-like part and the bowl-shaped part are communicated with each other through an air passage part to elastically support the electric blower. The cover is attached to a main body case of the cleaner body through a front cover support member and a rear cover support member.

  According to the vacuum cleaner which concerns on this invention, the vibration and the noise which are propagated from the electric blower to the cleaner main body can be suppressed, and the vacuum cleaner which can be operated quietly can be provided.

  A vacuum cleaner according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing an external appearance of a vacuum cleaner according to an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view showing a configuration of a vacuum cleaner body of the vacuum cleaner according to the present embodiment.

  As shown in FIG.1 and FIG.2, the vacuum cleaner 1 which concerns on this embodiment has the vacuum cleaner main body 11 and one end detachably connected to the connection port 11a of this vacuum cleaner main body 11, and the other end is a hand operation. A dust collecting hose 13 provided with a pipe 12, an extension pipe 14 that is detachably connected to the hand control pipe 12, and a suction port body 15 that is detachably connected to a distal end portion of the extension pipe 14 are provided. The operation tube 12 is provided with an operation unit 12a, and the operation unit 12a is provided with a plurality of operation switches 12b.

  The suction port body 15 is formed with a suction chamber in which a suction opening (dust suction port) (not shown) for sucking dust is formed on the bottom surface, and this suction chamber is connected via an extension pipe 14 and a dust collecting hose 13. The suction connection port (not shown) of the dust collection unit 30 provided in the cleaner body 11 is communicated.

  The vacuum cleaner main body 11 includes a main body case 20, a dust collection unit 30 that is detachably mounted in the main body case 20, and a lid body 21 that is provided on the main body case 20 so as to be openable and closable.

  A dust collection unit chamber (mounting portion) 22 in which the dust collection unit 30 is detachably mounted is formed on the front side of the main body case 20, and an upper opening 23 of the dust collection unit chamber 22 is sealed by a lid 21. . In addition, an electric blower 24 is provided on the rear side of the main body case 20, and a cylindrical connection air passage portion 25 having a front opening 25 a is formed on the front side of the electric blower 24. A lattice member 25b is disposed, and a seal ring 26 is attached to the front opening 25a. A connection opening 25d is formed in the rear wall 25c of the connection air passage portion 25, and the connection opening 25d communicates with the suction opening 24a of the electric blower 24.

  The dust collection unit 30 is detachably mounted in the middle of the suction air path from the connection port 11 a of the cleaner body 11 and the suction opening 24 a of the electric blower 24, and can be taken out from the cleaner body 11.

  The dust collecting unit 30 includes dust separating means including first dust removing means and second dust collecting means, and the first dust removing means separates dust contained in the air flowing at high speed by a difference in gravity. The high-speed separation method is adopted, and the dust separation unit 32, the dust collection unit 31, and the net filter 33 are provided, and the second dust separation unit includes a pleat filter 34.

  The pleat filter 34 is housed in a housing case 35 having a crest 34a formed on the upstream side, and a dust separator 31 formed integrally with a front wall (not shown).

  A connection opening 35 b is formed in the front wall portion of the storage case 35, and the connection opening 35 b is connected to the suction air passage portion 36. The inside of the storage case 35 and the suction air passage 36 communicate with each other through the connection opening 35b.

  FIG. 3 is a perspective view of the electric blower covered with a cover, and FIG. 4 is a cross-sectional view thereof. As shown in FIGS. 3 and 4, the electric blower 24 includes a fan case 41, which is entirely or partially covered with the fan case 41, both of which are a metal centrifugal fan (not shown) and an outer periphery of the centrifugal fan. It is comprised with the motor 42 which rotates the diffuser and centrifugal fan which are provided through a rotating shaft.

  The entire electric blower 24 is covered with a cover 43.

  The cover 43 is made of synthetic resin, and includes a front cover 44 that covers the centrifugal fan and the motor front part, and a rear cover 45 that is provided integrally with the front cover 44 and covers the rear part of the motor.

  The front cover 44 has a cylindrical shape and is provided with a disk-shaped front plate portion 44a at the front portion, and a seal member mounting hole 44b is provided at the center of the front plate portion 44a.

  A small-diameter portion 46a of a soft synthetic resin sealing member 46 made of a truncated conical hollow body is fitted into the sealing member mounting hole 44b, and an end surface 46b abuts on a front surface portion 41c provided on the front surface of the fan case 41. The air passage 46c provided in the seal member 46 communicates with the suction port 24a of the electric blower 24 shown in FIG.

  A front cover support member 47 made of an elastic member in the form of a ring is fitted on the fan side of the cover 43, for example, on the ring-shaped step 44 c near the outer periphery of the front surface of the front cover 44.

  On the other hand, the rear cover 45 is provided with a rear plate portion 45a. The center of the rear plate portion 45a has a bearing housing portion 41a provided on the fan case 41 and a ring-shaped rear motor support member 48, and A bearing insertion recess 45b into which the bearing portion 42a is inserted is provided.

  Further, the front cover 44 is provided with a front cover joint portion 44d, the rear cover 45 is provided with a rear cover joint portion 45c whose diameter is expanded from the rear cover 45 having a circular cross section, and the front cover joint portion 44d is provided as the rear cover. The cover 43 is integrally formed by being fitted into the joint 45c and screwed with a screw as necessary.

  Further, the front cover joint portion 44d and the rear cover 45 are formed in a substantially square shape with each corner portion being linear, and an engagement concave portion 44e projecting inward is formed at a corner portion of the front cover joint portion 44d located inside. Provided.

  The electric blower 24 is covered by the integrated cover 43 and is elastically supported by the cover 43 by a spring member 49.

  In the state where the electric blower 24 is covered with the cover 43, the air discharged from the air discharge port provided in the diffuser (not shown) passes through the exhaust air passage provided in the electric blower 24 and is provided in the motor cover 42. The body 41 is blown into the main body case 20 through an exhaust vent 45d provided on the outer periphery of the lower portion of the rear cover 45, and the main body from the exhaust hole 20a provided in the main body case 20 located behind the electric blower 24 shown in FIG. The air is exhausted outside the case 20.

  As shown in FIG. 5, the elastic support of the electric blower 24 includes a metal circular ring-shaped reinforcing ring 51 fitted in the front cover 44 and a spring end 49a fixed to a cylindrical motor case 41, and the other end of the spring. 49 b is fixed to the reinforcing ring 51 and is performed by three or more spring members 49 arranged at equal intervals (90 ° intervals), for example, at three or more intervals.

  The front cover joint portion 44d and the rear cover 45 have a substantially square shape with straight corners, and the portions into which the reinforcing ring 51 of the front cover joint portion 44d located on the inside is fitted are arc-shaped or It forms a substantially square shape that is linearly chamfered, and four engaging recesses 44e that project inward are provided in the linear portion.

  The spring end 49a is fixed to the fan case 41 by engaging the spring end 49a with the spring locking part 51a. The spring locking part 51a is a circular ring and is attached to the fan case 41 at the position of the center of gravity of the electric blower. Four spring fixing members 52, which are wound and fixed, are provided at equal intervals as many as the spring members. The spring fixing member 52 is fixed by screwing the screw 52c into the screwing portion 52b.

  The reinforcement ring 51 has four spring engagement recesses 51a with which the other spring end 49b engages, and is provided with the same number of spring members 49 as the spring members 49 at equal intervals corresponding to the positions of the spring members 49.

  The spring other end 49b is fixed to the reinforcing ring 51 by engaging the spring other end 49b with the spring engaging recess 51a.

  Further, the reinforcing ring 51 is attached to the cover 43 while the reinforcing ring 51 is fitted into the cover 43 and the spring engaging portion 51a is engaged with the engaging concave portion 44e by the concave-convex engagement. For example, a part contacts the cover 43.

  Accordingly, most of the axial vibration of the cover 43 caused by the electric blower 24 is absorbed by the spring member 49 and the reinforcing ring 51.

  As shown in FIGS. 4 and 6, the front cover support member 47 attached to the front cover 44 is made of, for example, an elastic material made of synthetic resin having elasticity, and has a substantially U-shaped cross section on the outer periphery. A portion 47a is formed, has a ring shape, and a protrusion or protrusion, for example, a protrusion 47b is formed on the inner peripheral surface of the ring that contacts the horizontal surface of the step 44c, and also on the ring side surface that contacts the side of the step 44c. The protrusion 47c is formed continuously with the protrusion 47b. In addition, you may provide a protrusion also on a ring outer peripheral surface as needed.

Therefore, the front cover 44 and the front cover supporting member 47 is in line contact via projections 47 b, the 47c, are supported by the line contact, the horizontal surface of the step portion 44c is in contact ridges 47 b and the line, the electric blower 24 part of the vibration in the radial direction of the vibration of the cover 43 due to the is absorbed by the protrusion 47 b, a portion of the axial vibrations are absorbed by the ribs 47 c.

  As shown in FIGS. 7 and 8, the seal member 46 is made of an elastic material made of, for example, elastic synthetic resin and softer than the front cover support member 47, and has a bottomless dish-like portion 46d and a small diameter portion 46a. The dish-shaped part 46d and the bowl-shaped part 46e are communicated with each other through the air passage part 46c. Therefore, the vibration in the axial direction is absorbed by the dish-shaped portion 46d and the bowl-shaped portion 46e, mainly by the bowl-shaped portion 46e.

  Further, for example, a protrusion 46f is formed on the outer periphery of the small diameter portion 46b, and is in line contact with the seal member mounting hole 44b, and a part of the radial vibration of the fan case 41 caused by the electric blower 24 is absorbed by the protrusion 46f. Is done.

  Further, as shown in FIG. 9, the rear motor support member 48 is ring-shaped and made of the same elastic material as the front cover support member 47, and for example, a protrusion 48a is formed on the inner peripheral surface of the ring in contact with the bearing housing portion 41a. Part of the radial vibration of the electric blower 24 that is formed is absorbed by the protrusion 48a that makes line contact.

  As shown in FIGS. 4, 10, and 11, a rear cover support member 54 is externally fitted into the bearing insertion recess 45 b provided in the rear cover 45.

  The rear cover support member 54 has a flanged ring shape and is made of the same elastic material as that of the front cover support member 47. A protrusion 54a is provided on the inner peripheral surface of the ring, and a protrusion is formed on the end surface of the flange portion 54b. Article 54c is provided. In addition, you may provide a protrusion also on a ring outer peripheral surface as needed.

  The electric blower 24 covered with the cover 43 and elastically supported as described above is, as shown in FIGS. 1 and 4, the mounting portion integrally provided in the body case 20 or the front side integrally provided. It is attached in the main body case 20 by an attachment portion 60 composed of two upper and lower attachment members, and two rear upper and lower attachment portions 61.

  The mounting portion 60 for mounting is provided with a large-diameter semicircular mounting recess 60a, and the mounting portion 61 is provided with a small-diameter semicircular mounting recess 61a.

  Accordingly, the attachment is performed by fitting the attachment recess 60 a into the U-shaped attachment 47 a of the front cover support member 47 and fitting the attachment recess 61 a into the ring outer peripheral surface of the rear motor support member 48.

In the electric vacuum cleaner 1, since the electric blower 24 is covered with the cover 43, propagation of noise generated in the electric blower 24 to the cleaner main body 11 is suppressed, and the attachment to the cover 43 is performed by the spring member 49 or In addition to this, the reinforcing fan 51 elastically supports the electric blower 24 using the front cover support member 47, the seal member 46, the rear motor support member 48, and the rear cover support member 54, all of which are made of an elastic member. The vibration generated in the electric blower 24 in the thrust direction (axial direction) and radial direction (circumferential direction with respect to the shaft) is also suppressed from propagating to the cleaner body 11 .

  In the present embodiment, the front cover support member is in contact with the cover, the seal member is fitted into the opening, and the ring is inserted into the fan case and the bearing housing portion that houses the bearing portion. In the example of providing a protrusion or a protrusion on the inner peripheral surface of the rear motor support member made of an elastic material, the contact surface of the cover with which the front cover support member contacts, the surface of the opening with which the seal member is fitted, and You may provide a protrusion or a protrusion on the surface of the bearing accommodating part inserted in a rear motor support member.

  According to the vacuum cleaner which concerns on this embodiment, the vacuum cleaner which suppresses the vibration and noise which are propagated from the electric blower to the vacuum cleaner main body and can be operated quietly is realized.

  The configuration of the present plan is not limited to the canister type, but can be applied to an upright type or a handy type.

The perspective view which shows the external appearance of the vacuum cleaner which concerns on one Embodiment of this invention. The longitudinal cross-sectional view which shows the structure of the vacuum cleaner main body of the vacuum cleaner which concerns on one Embodiment of this invention. The perspective view of the electric blower covered with the cover of the vacuum cleaner which concerns on one Embodiment of this invention. Sectional drawing of the electric blower of the vacuum cleaner which concerns on one Embodiment of this invention. The perspective view of the motor vicinity used for the vacuum cleaner which concerns on one Embodiment of this invention. The perspective view of the front cover support member used for the vacuum cleaner which concerns on one Embodiment of this invention. The side view of the sealing member used for the vacuum cleaner which concerns on one Embodiment of this invention. The perspective view of the sealing member used for the vacuum cleaner which concerns on one Embodiment of this invention. The perspective view of the rear motor support member used for the vacuum cleaner concerning one embodiment of the present invention. The perspective view which shows the front side of the back cover support member used for the vacuum cleaner which concerns on one Embodiment of this invention. The perspective view which shows the back side of the back cover support member used for the vacuum cleaner which concerns on one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric vacuum cleaner 11 Vacuum cleaner main body 13 Dust collection hose 15 Suction port body 20 Main body case 22 Dust collection unit room (mounting part)
24 Electric blower 24a Suction opening 25 Connection air passage part 30 Dust collecting unit 34 Pleated filter 35 Storage case 41 Fan case 41a Bearing housing part 42 Motor 42a Bearing part 43 Cover 44 Front cover 44a Front plate part 44c Step part 44b Seal member mounting hole 44d Front cover joint 44e Engaging recess 45 Rear cover 45a Rear plate 45b Bearing insertion recess 45c Rear cover joint 45d Exhaust air vent 46 Seal member 46a Small diameter part 46b End face 46c Ventilation path part 46d Dish-like part 46e Bowl-like part 46f Projection 47 Front cover support member 47a Mounting portions 47b, 47c Projection 48 Rear motor support member 48a Projection 49 Spring member 51 Reinforcement ring 53 Spring fixing member 54 Rear cover support member 54a Projection 54b Flange 54c Projection 60 Mounting member 61 Mounting member

Claims (4)

Dust removal means for removing dust contained in the air is provided in the middle of the suction air path from the dust suction port for sucking dust to the suction opening of the electric blower equipped with a fan case. In the vacuum cleaner
A cover having a front surface portion and a rear surface portion in a cylindrical shape covering the electric blower, and
A spring member elastically supporting the electric blower in the cover;
Supporting this cover on the fan side of the cover, a front cover support member made of an elastic material in a ring shape,
A seal member made of an elastic material in a ring shape that is fitted into an opening provided in the front portion and has one end abutting against the fan case;
A rear cover support member that is provided on the rear surface portion and fitted into a recess into which a bearing portion of the motor of the electric blower is inserted, and is made of an elastic material in a ring shape,
On the outer periphery of the front portion, a ring-shaped step is provided,
In this step, the horizontal surface of this step contacts the ring inner peripheral surface of the front cover support member,
The front cover support member is externally fitted such that the side surface of the stepped portion contacts the ring side surface,
The seal member is formed of a bottomless bowl-shaped portion that is softer than an elastic material used for the front cover support member and the rear cover support member and communicates with a bottomless dish-shaped portion through a small diameter portion. The dish-shaped portion and the bowl-shaped portion are communicated with each other through a ventilation path portion.
A vacuum cleaner characterized in that the cover elastically supporting the electric blower is attached to a main body case of the vacuum cleaner body via a front cover support member and a rear cover support member. The electric vacuum cleaner according to claim 1, wherein the front cover support member has protrusions or protrusions formed on an inner peripheral surface of the ring and a side surface of the ring. A front cover support member is in contact with the cover, a surface in which the seal member is fitted into the opening, and a ring-shaped elastic member in which a bearing housing portion provided in the fan case and housing the bearing portion is inserted. The electric vacuum cleaner according to claim 2, wherein a protrusion or a protrusion is provided on an inner peripheral surface of the rear motor support member made of a material. A front cover support member is in contact with the cover, a surface in which the seal member is fitted into the opening, and a ring-shaped elastic member in which a bearing housing portion provided in the fan case and housing the bearing portion is inserted. Instead of providing protrusions or protrusions on the inner peripheral surface of the rear motor support member made of a material, the contact surface of the cover with which the front cover support member contacts, the surface of the opening with which the seal member is fitted, and The electric vacuum cleaner according to claim 3, wherein a protrusion or a protrusion is provided on a surface of the bearing housing portion to be inserted into the rear motor support member.

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