JP5209328B2 - Electric vacuum cleaner - Google Patents

Description

  The present invention relates to an electric vacuum cleaner, and more particularly to an electric vacuum cleaner provided with an electric blower with an improved mounting structure of the 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 the vacuum cleaner body using a rear elastic body for shock and a front elastic body for shock absorption 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, the motor is directly elastically supported by the main body of the vacuum cleaner, and the bearing insertion portion and the elastic member are always inserted between the ribs. Due to this vibration, the bearing insertion portion and the elastic member touch after the rib, and the vibration propagates to the cleaner body, so that a quiet operation cannot be performed. In addition, since the bearing insertion portion and the elastic member and the rear of the rib are largely separated, when the electric blower is stopped, when the dust collecting hose is pulled and the cleaner body is moved, the electric blower is greatly shaken, and the electric blower is Possible damage.
Japanese Patent Laid-Open No. 5-84194

  The present invention has been made in consideration of the above-described circumstances, and can suppress the vibration transmitted from the electric blower to the main body of the vacuum cleaner, can be operated silently, and is cleaned by pulling the dust collecting hose while the electric blower is stopped. It is an object of the present invention to provide a quiet vacuum cleaner that does not shake the electric blower even if the machine body is moved.

In order to achieve the above-described object, the vacuum cleaner according to the present invention has air in the middle of a suction air path from a dust suction port for sucking dust to a suction opening of an electric blower provided in the vacuum cleaner body and provided with a fan case. An electric vacuum cleaner provided with dust removing means for removing dust contained therein, an elastic spring member that elastically supports the electric blower in the cleaner body, and a motor bearing provided at a rear portion of the fan case. a bearing insertion portion but to be inserted, and a receiving unit for the bearing insertion portion is inserted and removed appropriately, includes a receiving unit forming part of the receiving portion is provided, during the operation stop of the previous SL electric blower, the bearing insert When the electric blower is inserted into the receiving portion and received by the receiving portion, and the electric blower moves forward in the axial direction by thrust, the bearing insertion portion is separated from the receiving portion. And this Be free be out of the receiving part, after stopping the operation of the electric blower, the bearing insertion portion is inserted again into the receiving portion, characterized in that to keep this insertion state.

  According to the vacuum cleaner of the present invention, the vibration transmitted from the electric blower to the vacuum cleaner main body can be suppressed and the operation can be quietly performed, and the vacuum cleaner main body is moved by pulling the dust collecting hose while the electric blower is stopped. Even if it makes it, it can provide a quiet vacuum cleaner without shaking of an electric blower.

  A vacuum cleaner according to a first 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 a first 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.

  As shown in FIG.1 and FIG.2, the vacuum cleaner 1 which concerns on this 1st Embodiment is connected with the vacuum cleaner main body 11 and the connection port 11a of this vacuum cleaner main body 11 so that one end can be attached or detached, and the other end is connected. Is a dust collecting hose 13 provided with a hand operation tube 12, an extension tube 14 removably connected to the hand operation tube 12, and a suction port body 15 removably connected to the tip of the extension tube 14. Is 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 (not shown) in which a suction opening (dust suction port) (not shown) for sucking dust is formed on the bottom surface, and the suction chamber includes an extension pipe 14 and a dust collecting hose 13. To the suction connection port (not shown) of the dust collection unit 30 provided in the cleaner body 11.

  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 dust separation unit 31, the dust collection unit 32, and the net filter 33 are employed, and the second dust separation unit includes a pleat filter 34 provided integrally with the dust separation unit 31. The pleated filter 34 is stored in a storage case 35 in which a peak portion 34a is formed on the upstream side, and the dust separation portion 31 is formed integrally with the front wall portion 35a.

  A connection opening 35 b is formed in the front wall portion 35 a 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.

  3 is a perspective view of an electric blower covered with a cover, FIG. 4 is a sectional view thereof, and FIG. 5 is a perspective view of the vicinity of a fan case.

  As shown in FIGS. 3 to 5, the electric blower 24 is a centrifugal fan (not shown) covered with a fan case 41, a diffuser provided on the outer periphery of the centrifugal fan, and a motor that rotates the centrifugal fan via a rotating shaft. 42 and a cover 43 covering them.

  The cover 43 is interposed between the cleaner body 11 and the fan case 41, and is made of synthetic resin. The cover 43 covers the centrifugal fan and the motor front part, and the front cover 44 is screwed together to cover the motor rear part. For example, the receiving portion forming portion of the present invention is a part of the rear cover 45 constituting a part of the cover 43.

  The electric blower 24 is covered with a cover 43 and elastically supported by the cover 43. Therefore, propagation of noise and vibration generated in the electric blower 24 to the cover 43 is suppressed.

  Such elastic support includes a metal circular ring-shaped reinforcing ring 51 fitted into the front cover 44, one end of a spring 49a fixed to the cylindrical motor case 41, and the other end of the spring 49b fitted into the front cover 44. For example, the four spring members 49 are fixed to the reinforcing ring 51 and arranged at regular intervals (intervals of 90 °).

  In the front cover 44, a portion into which the reinforcing ring 51 is fitted has a substantially square shape in which each corner is linearly chamfered, and four engaging recesses 44e projecting inward are provided in the straight portion.

  The spring end 49a is fixed to the motor case 41 by engaging the spring end 49a with the spring locking portion 52a. The spring locking portion 52a is in the shape of a circular ring and is attached to the fan case 41 at the center of gravity of the electric blower. Four spring fixing members 52 wound and fixed are provided at equal intervals.

  On the other hand, on the reinforcing ring 51, four spring engaging portions 51a with which the other spring end 49b is engaged protrude outwardly, and four spring engagement portions 51a are provided at equal intervals corresponding to the arrangement 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 portion 51a.

  Therefore, most of the radial vibration and a part of the axial vibration accompanying the rotation of the electric blower 24 are absorbed by the spring member 49.

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

  Further, 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 of the front plate portion 44a provided at the center of the fan case 41 is fitted. , And communicates with the air passage 46c provided in the seal member 46 and the suction opening 24a of the centrifugal fan.

  As shown in FIG. 6, the seal member 46 is made of an elastic material softer than the front cover support member 47, and is a bottomless bowl-shaped portion 46e communicating with the bottomless dish-shaped portion 46d and the small-diameter portion 46a. Thus, the dish-like portion 46d and the bowl-like portion 46e are communicated with each other through the air passage portion 46c.

  Therefore, a part of radial vibration accompanying rotation of the electric blower 24 is absorbed by the hook-shaped portion 46e.

  Also, the rear cover 45 shown in FIG. 4 is provided with a rear plate portion 45a, and a cylindrical insertion portion receiving recess 45b which is a receiving portion of the present invention is provided at the center of the rear plate portion 45a.

This insertion portion housing recess 45b, is mounted with the projecting portion 48a of the ring-shaped elastic member 48 protrudes from the mounting surface 45a ₁ of the rear plate portion 45a in the bearing insertion portion 41a side to be described later.

  As shown in FIG. 7, when the electric blower 24 is stopped, a bearing portion (not shown) of the motor 42 is accommodated in a bearing insertion portion 41 a provided in the fan case 41, and the bearing insertion portion 41 a is a bearing insertion portion. It gently engages with the housing recess 45b. Therefore, when the electric blower 24 is stopped, even if the dust collecting hose is pulled and the main body of the cleaner is moved, the elastic body 48 is not shaken, and the electric blower 24 is silently shocked. Even when the vacuum cleaner main body is stood up, the elastic member 48 and the insertion portion receiving recess 45b receive the periphery of the bearing insertion portion 41a, so that the impact applied to the bearing insertion portion 41a and the electric blower 24 is reduced. . Furthermore, since the elastic member 48 is interposed, the impact on the electric blower 24 is more reliably absorbed.

On the other hand, in the operation state of the electric blower 24, as shown in FIG. 8, the electric blower 24 is pulled forward by the thrust force of the electric blower 24, so the bearing insertion portion 41a is attached to the mounting surface of the rear plate portion 45a. It is completely separated from 45a ₁ and stays (inserted) in the protrusion 48a of the elastic member 48. Therefore, even if the electric blower 24 vibrates in the radial direction, without bearing insertion portion 41a collides with the mounting surface 45a _1, further event, even if the electric vacuum cleaner 1 becomes falling state, bearing insertion portion 41a is cushionedly supported by the protrusion 48a.

  As shown in FIGS. 7 and 8, the elastic member 48 is replaced with the elastic member 48 provided in the insertion portion receiving recess 45b and attached to the receiving insertion portion and the receiving portion forming portion shown in FIGS. As in the first modification, a ring-shaped elastic member 48 may be externally fitted to the bearing insertion portion 41a, and in this case as well, the same effect as the case where the elastic member 48 is provided in the insertion portion accommodating recess 45b. Play.

  Further, as in the second modification of the receiving insertion portion and the receiving portion forming portion shown in FIGS. 11 and 12, the elastic member 48 fitted on the bearing insertion portion 41a is formed into a flat ring shape, and further outward. By providing the extending flange 48b, even when the operation of the electric blower 24 is stopped, even when the dust collecting hose is pulled and the cleaner body is moved, the elastic body 48 does not shake and is quiet, and the bearing insertion portion 41a or There is no impact on the electric blower 24. Even when the vacuum cleaner main body is stood up, the elastic member 48 and the insertion portion receiving recess 45b receive the periphery of the bearing insertion portion 41a, so that the impact applied to the bearing insertion portion 41a and the electric blower 24 is reduced. . During operation, the bearing insertion portion 41a becomes free so that it does not collide with other portions.

  Furthermore, without inserting an elastic member between the insertion portion receiving recess and the bearing insertion portion, the bearing insertion portion 41a is inserted into the insertion portion as in the third modification of the receiving insertion portion and the receiving portion forming portion shown in FIGS. Even if it is in direct contact with the housing recess 45b, even when the electric blower 24 is stopped or stopped, even if the dust collecting hose is pulled and the cleaner body is moved, there is no shaking and the bearing insertion portion 41a or There is no impact on the electric blower 24. Also, when the vacuum cleaner main body is stood up, the periphery of the bearing insertion portion 41a is received by the insertion portion receiving recess 45b, so that the impact applied to the bearing insertion portion 41a and the electric blower 24 is reduced. During operation, the bearing insertion portion 41a becomes free so that it does not collide with other portions. In this case, it is preferable that the forming member of the insertion portion receiving recess 45b is made of a soft synthetic resin.

  As shown in FIGS. 2 and 4, the electric blower 24 covered with the cover 43 and elastically supported as described above is integrally attached to the inside of the main 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.

  Therefore, 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 cover support member 62.

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

  In the electric vacuum cleaner of the first embodiment, since the electric blower 24 is covered with the cover 43, the propagation of noise generated in the electric blower 24 to the fan case 41 is suppressed, and further, the electric blower 24 is operated during the operation of the electric blower 24. The blower 24 is moved forward in the axial direction by thrust, the bearing insertion portion 41a is separated from the insertion portion receiving recess 45b, and is removed from the insertion portion receiving recess 45b. When the electric blower 24 is stopped, the bearing insertion portion 41a is inserted. The state of being inserted into the part receiving recess 45b is maintained.

Therefore, when using the vacuum cleaner, even the electric blower 24 vibrates in the radial direction, without bearing insertion portion 41a collides with the protruding portion 48a and the mounting surface 45a _1, a quiet, also when not in use Even when the vacuum cleaner main body 11 is moved by pulling the dust collecting hose, the elastic member is not shaken, is quiet and does not give an impact to the electric blower 24, and is stored even when the vacuum cleaner main body 11 is stood up. The bearing insertion portion 41a is received by the 48 and the insertion portion accommodating recess 45b, and the electric blower 24 is not impacted.

  According to the vacuum cleaner according to the first embodiment, the vibration transmitted from the electric blower to the main body of the vacuum cleaner can be suppressed, the operation can be quietly performed, and the dust collecting hose is pulled while the electric blower is stopped, thereby cleaning the vacuum cleaner. Even if the main body is moved, the electric blower does not shake and a quiet vacuum cleaner is realized.

  Next, the vacuum cleaner which concerns on 2nd Embodiment of this invention is demonstrated.

  In the first embodiment, the receiving portion forming portion provided with the receiving portion is a part of the cover, and the rear portion of the electric blower is appropriately supported by the main body case via the cover, whereas the second embodiment is a cover. The electric blower is attached to the main body case, the receiving member is provided on the support member that forms the receiving portion forming member, and the rear portion of the electric blower is appropriately supported by the support member.

  For example, as shown in FIG. 15, the electric blower 24 elastically supported by the main body case 20 by the spring member 49 is integrally or integrally provided in the main body case 20 via the seal member 46. The front side is flexibly supported by the front side support member 60A.

  On the other hand, on the rear side of the fan case, the bearing insertion portion 41a is appropriately received by the elastic member 48 and the insertion portion accommodating recess 60Aa as the receiving portion in the present invention or the receiving through hole.

  The insertion portion accommodating recess 60Aa is provided on a support member 61A as a receiving portion forming portion in the present invention that appropriately supports the electric blower 24 on the main body case 20.

  A ring-shaped elastic member 48 is attached to the insertion portion accommodating recess 60Aa by providing a protrusion 48a that protrudes from the attachment surface 61Ab of the support member 61A.

  Accordingly, as shown in FIG. 7, when the electric blower 24 is stopped, the bearing portion of the motor 42 is accommodated, and the bearing insertion portion 41 a provided in the fan case 41 is gently engaged. Therefore, even if the dust collecting hose is pulled and the main body of the vacuum cleaner is moved, the electric blower is not in a free state, so there is no shaking, and it is quiet and does not impact the electric blower.

  Even when the vacuum cleaner main body is stood up and stored, the elastic member 48 and the insertion portion accommodating recess 60Aa receive the bearing insertion portion 41a, so that the electric blower is not impacted.

  In the operating state of the electric blower 24, as in FIG. 8, the electric blower 24 is pulled forward by the thrust force of the electric blower 24, so the bearing insertion portion 41a is attached to the protrusion 48a of the elastic member 48 and the attachment portion 61A. It is completely separated from the surface 61Ab. Therefore, even if the electric blower 24 vibrates in the radial direction, the bearing insertion portion 41a does not collide with the protruding portion 48a and the mounting surface 61Ab.

  In addition, since another structure is not different from the vacuum cleaner shown in FIG. 2, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  According to the electric vacuum cleaner according to the second embodiment, the vibration transmitted from the electric blower to the main body of the vacuum cleaner can be suppressed, and the operation can be quietly performed. Even if the main body is moved, the electric blower does not shake and a quiet vacuum cleaner is realized.

  It can also be used in handy and upright vacuum cleaners.

The perspective view which shows the external appearance of the vacuum cleaner which concerns on 1st 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 1st Embodiment of this invention. The perspective view of the electric blower covered with the cover of the electric vacuum cleaner which concerns on 1st Embodiment of this invention. Sectional drawing of the electric blower of the vacuum cleaner which concerns on 1st Embodiment of this invention. The perspective view of the fan case vicinity used for the vacuum cleaner which concerns on 1st Embodiment of this invention. The perspective view of the sealing member used for the vacuum cleaner which concerns on 1st Embodiment of this invention. The longitudinal cross-sectional view of the operation stop state of the bearing insertion part and receiving part which are provided in the fan cover of the vacuum cleaner which concerns on 1st Embodiment of this invention. The longitudinal cross-sectional view of the operation state of the bearing insertion part and receiving part which are provided in the fan cover of the vacuum cleaner which concerns on 1st Embodiment of this invention. The longitudinal cross-sectional view of the operation stop state of the 1st modification of the bearing insertion part and receiving part which are provided in the fan cover of the vacuum cleaner which concerns on 1st Embodiment of this invention. The longitudinal cross-sectional view of the driving | running state of the 1st modification of the bearing insertion part and receiving part which are provided in the fan cover of the vacuum cleaner which concerns on 1st Embodiment of this invention. The longitudinal cross-sectional view of the operation stop state of the 2nd modification of the bearing insertion part and receiving part which are provided in the fan cover of the vacuum cleaner which concerns on 1st Embodiment of this invention. The longitudinal cross-sectional view of the driving | running state of the 2nd modification of the bearing insertion part and receiving part which are provided in the fan cover of the vacuum cleaner which concerns on 1st 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 longitudinal cross-sectional view of the operation stop state of the 3rd modification of the bearing insertion part and receiving part which are provided in the fan cover of the vacuum cleaner which concerns on 1st Embodiment of this invention. The longitudinal cross-sectional view of the driving | running state of the 3rd modification of the bearing insertion part and receiving part which are provided in the fan cover of the vacuum cleaner which concerns on 1st Embodiment of this invention. The longitudinal cross-sectional view which shows the cross section of the electric blower vicinity of the vacuum cleaner which concerns on 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner 11 Vacuum cleaner main body 12 Hand control pipe 13 Dust collection hose 15 Suction port body 20 Main body case 20a Main body exhaust hole 22 Dust collection unit chamber
24 Electric blower 24a Suction opening 25 Connection air passage part 25a Front opening 30 Dust collecting unit 34 Pleated filter 35 Storage case 41 Fan case 41a Bearing insertion part 41b Case exhaust hole 42 Motor 43 Cover 44 Front cover 44a Front plate part 44b Seal member attachment Hole 44c Step 44e Engaging recess 45 Rear cover 45a Rear plate 45a ₁ Mounting surface 45b Insertion receiving recess 45d Cover exhaust hole 46 Seal member 46e Hook 47 Front cover support member 48 Elastic member 49 Spring member 49a One end of spring 49b Spring other end 51 Reinforcing ring 51a Spring engaging portion 52 Spring fixing member 52a Spring locking portion 60 Mounting portion 60a Mounting recess 61 Mounting portion 61a Mounting recess 62 Rear cover support member

Claims (6)

Electric cleaning provided with dust removing means for removing dust contained in the air in the middle of the suction air path from the dust suction port for sucking dust to the suction opening of the electric blower provided in the vacuum cleaner body and provided with a fan case In the machine
An elastic spring member that elastically supports the electric blower in the cleaner body;
A bearing insertion portion provided at a rear portion of the fan case and into which a motor bearing is inserted;
A receiving portion into which the bearing insertion portion is appropriately inserted and removed;
Comprising a receiving unit forming part of the receiving portion is provided,
During shutdown of the previous SL electric blower, the bearing insertion portion is in a state of being received by the receiving portion is inserted into the receiving portion,
During operation of the electric blower, the electric blower moves forward in the axial direction with thrust, so that the bearing insertion portion is separated from the receiving portion, and is freed from the receiving portion,
After the operation of the electric blower is stopped, the bearing insertion portion is inserted again into the receiving portion, and this insertion state is maintained. The electric vacuum cleaner according to claim 1, wherein an elastic member is interposed between the bearing insertion portion and the receiving portion. 3. The electric vacuum cleaner according to claim 1, wherein the elastic member is provided in the receiving portion and protrudes from the mounting surface of the receiving portion forming portion toward the bearing insertion portion. The receiving portion forming portion is a part of a cover that covers the electric blower and to which one end of an elastic spring member is attached. The receiving portion is provided on a rear surface portion of the cover, and the electric blower is interposed through the cover. The vacuum cleaner according to claim 1, wherein the vacuum cleaner is attached to the vacuum cleaner body. The receiving portion forming portion is a part of a cover that covers the electric blower and to which one end of an elastic spring member is attached. The receiving portion is provided on a rear surface portion of the cover, and the electric blower is interposed through the cover. The vacuum cleaner according to claim 1, wherein the vacuum cleaner is attached to the vacuum cleaner body, and an elastic member is interposed between the bearing insertion portion and the receiving portion. The receiving portion forming portion is a part of a cover that covers the electric blower and to which one end of an elastic spring member is attached. The receiving portion is provided on a rear surface portion of the cover, and the elastic member is attached to the receiving portion. The electric vacuum cleaner according to claim 1, wherein the electric vacuum cleaner is provided and protrudes from a mounting surface of the receiving portion forming portion toward the bearing insertion portion.

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