JP2013202212A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner that is unlikely to fall dust carelessly and to cause leakage of an air flow.SOLUTION: A dust collection case 11 includes an inward projecting strip part 20 annularly formed near a rear opening part 12 thereof, and a slope part 23 the inside dimensions 2R and 2r of which are gradually reduced from an inner face 11D of the dust collection case 11 towards an inner peripheral edge 20A of the projecting strip 20. An inner peripheral surface 24A of a short cylinder part 24 constituting the projecting strip part 20 is formed into a circular shape, an outer edge of a seal member 30 of a filter assembly 15 is formed into a circular shape, and the inner peripheral surface and the outer edge are closely attached to each other. When the filter assembly 15 is removed and the dust collection case is carried with the rear opening part 12 turned upward, even if the dust collection case 11 is slightly inclined, the projecting strip part 20 can prevent careless falling of the dust. The outer edge of the seal member 30 has the circular shape, and the seal member 30 is brought into uniform contact with the whole circumference of the inner peripheral face 24A of the short cylinder part 24, so that it is unlikely to cause leakage of an air flow.

Description

  The present invention relates to a vacuum cleaner having a dust collection case that can be attached to and detached from a cleaner body.

  Conventionally, as this type of vacuum cleaner, a dust collection case is detachably attached to a vacuum cleaner body incorporating an electric blower, and a filter case (the filter assembly of the present invention is installed in an opening of the dust collection case). There is known a detachable attachment (corresponding to a solid). (For example, refer to Patent Document 1). And such a vacuum cleaner attracts | sucks dust-containing airflow from the suction opening provided in the said dust collection case, and isolate | separates dust from the said dust-containing airflow with the filter provided in the said filter case. The filter case is provided with a mounting frame, and the mounting frame is in close contact with the inner wall of the dust collection case so that airflow does not flow into the dust collection case from other than the suction port. Has been.

Japanese Patent No. 4748453

  However, such a vacuum cleaner needs to remove the filter case from the dust collection case when discarding the dust accumulated in the dust collection case. When carrying the case, there is a risk that the dust in the dust collection case will accidentally spill when the dust collection case is tilted. In addition, in such a vacuum cleaner, when the shape of the opening of the dust collection case is non-circular, a difference occurs in the adhesion force of the mounting frame to the inner surface of the dust collection case. There was also a risk that outside air would flow into the dust collection case.

  An object of the present invention is to solve the above-mentioned problems and to provide a vacuum cleaner that is less likely to accidentally spill dust and less likely to leak airflow.

  The vacuum cleaner according to claim 1 of the present invention is a vacuum cleaner having a vacuum cleaner body incorporating an electric blower, a dust collection case removable from the vacuum cleaner body, and a filter assembly. In the vicinity of the opening of the dust collecting case, an inward protruding ridge is formed in an annular shape, and an inclined portion is provided in which the inner dimension is reduced gradually from the inner surface of the dust collecting case toward the inner periphery of the protruding ridge. It is characterized by that.

  The vacuum cleaner according to claim 2 of the present invention is the vacuum cleaner according to claim 1, wherein the inner peripheral shape of the protrusion is formed in a circular shape, and the outer peripheral shape of the seal member of the filter assembly is circular. The seal member is configured to be in close contact with the inner periphery of the protrusion.

  When the vacuum cleaner according to claim 1 of the present invention is configured as described above and transports the dust collection case in order to throw away the dust accumulated in the dust collection case, the dust collection case is somewhat Even if it is inclined, it is possible to prevent dust from spilling accidentally due to the protrusions.

  In addition, while forming the inner peripheral shape of the ridge portion in a circular shape, the outer peripheral shape of the seal member of the filter assembly is circular, and the seal member is configured to be in close contact with the inner periphery of the ridge portion. In addition to simplifying the shape of the seal portion, the entire seal portion is uniformly and airtightly adhered to the entire inner periphery of the ridge portion, thereby making it difficult to cause airflow leakage.

It is a whole sectional view showing Example 1 of the present invention. FIG. FIG. 2 is a front exploded perspective view of the same. It is an exploded perspective view facing backwards. It is sectional drawing of the principal part same as the above. It is whole sectional drawing which shows Example 2 of this invention.

  Preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention.

  Embodiment 1 of the present invention will be described below with reference to FIGS. Reference numeral 1 denotes a vacuum cleaner body. The vacuum cleaner main body 1 is provided with a handle portion 3, which is also referred to as a handle serving as a grip portion, at the rear portion of the cylindrical main body case 2. Moreover, the said vacuum cleaner main body 1 is attached to the lower part of the back side so that the battery case 5 which accommodated the rechargeable battery 4 can be attached or detached. The vacuum cleaner main body 1 is provided with a centrifugal electric blower 8 configured by attaching blades 7 to a drive shaft 6A of a motor 6 electrically connected to the rechargeable battery 4. A cylindrical dust collecting case 11 provided with a suction port 10 is detachably attached to the front surface 9 of the main body case 2. The dust collecting case 11 has a rear opening 12 attached to the front surface 9 of the main body case 2.

  Further, a primary side 8A of the electric blower 8 is formed by an air inlet formed in the front surface 9 of the main body case 2, and the electric blower is formed by an exhaust hole formed in the side surface 2A of the main body case 2. 8 secondary side 8B is formed. Further, on the front side of the primary side 8A, there is an outer / inner double filter assembly 15 called a filter assembly or a filter set, which includes a primary filter 13 and a secondary filter 14 for capturing dust. Is provided. Further, an operation unit 16A of the power switch 16 and an operation unit 17A of the strength changeover switch 17 of the electric blower 8 are provided on the lower surface and the upper surface of the handle unit 3, respectively.

  The dust collection case 11 has a cylindrical shape with a slightly narrow front part. The dust collection case 11 has an upper surface 11A, left and right side surfaces 11B, and a lower surface 11C so as to be continuous with the main body case 2. In addition, the shape of the outer periphery in the vicinity of the edge 12A in the rear opening 12 is non-circular when viewed from the front and is substantially rectangular in the embodiment, and the four corners are formed in the arc portion 12B. The dust collecting case 11 has a hollow portion 18 formed therein, and can store dust in the hollow portion 18. Further, the outer shape of the front portion of the main body case 2 is also non-circular in front view and substantially rectangular in this embodiment so as to coincide with the rear opening 12, and the four corners are formed in the arc portion 2B. ing.

  In the dust collection case 11, a suction guide tube 19 communicates with the suction port 10 and is integrally formed rearward. Note that the suction port 10 provided in the front portion of the dust collecting case 11 may be a connection port, and a downward suction nozzle (not shown) may be detachably provided as an attachment.

  And the protrusion part 20 is provided in inner surface 11D of the said dust collection case 11 in the vicinity of the edge 12A of the said rear part opening part 12. FIG. The protrusion 20 also serves as a mounting seat for the filter assembly 15. And the shape of the said protrusion part 20 is a flange | flange shape, Comprising: About the axis line 21 which goes to the front-back direction along the inner periphery of the edge 12A vicinity of the said rear part opening part 12, the said rear part opening part 12 It is inwardly directed from the inner periphery in the vicinity of the edge 12A toward the axis 21, and is provided in an annular shape in front view. In this embodiment, the axis 21 is arranged so as to coincide with the axis of the drive shaft 6A of the motor 6. As shown in FIG. 5, the protruding length L from the inner surface 11 </ b> D of the dust collecting case 11 toward the axis 21 side of the inner peripheral edge 20 </ b> A in the ridge portion 20 is such that the flow of the air flow in the hollow portion 18 is not inhibited. Is provided. The outer peripheral edge 20 </ b> B of the protruding portion 20 is in contact with the inner surface 11 </ b> D in the rear opening 12. In this state, the protruding portion 20 is fixed to the dust collecting case 11 using a connecting means 22 such as a screw. For this reason, the outer peripheral edge 20B of the protruding portion 20 is non-circular when viewed from the front, is substantially rectangular in this embodiment, and has four corners formed in the arc portion 20C. On the other hand, the inner peripheral edge 20 </ b> A of the ridge portion 20 is formed in a circular shape centered on the axis 21. An inclined portion 23 is provided on the front side of the ridge portion 20, that is, on a portion facing the suction port 10 and thus the suction guide tube 19. The inclined portion 23 is formed in a shape in which the inner dimension is gradually reduced from the inner surface 11D of the dust collecting case 11 toward the inner peripheral edge 20A of the protruding portion 20 as it goes from the front side to the rear side. . That is, in the inclined portion 23 provided on the front side of the ridge portion 20, as shown in FIG. 5, from the first radius R between the outer peripheral edge 20B and the axis 21 along the rear side from the front side, The second radius r side between the inner peripheral edge retreated from the peripheral edge and the axis 21 is formed so as to be uniformly reduced, that is, tapered. As a result, the inner surface 11D of the dust collection case 11 and, as a result, the inclined portion 23 in which the inner dimensions 2R and 2r are gradually reduced (2R> 2r) from the outer peripheral edge 20B to the inner peripheral edge 20A. . The inner angle X of the inclined portion 23 with respect to the inner surface 11D on the rear side of the inclined portion of the dust collecting case 11 is preferably 15 to 75 °. For this reason, it is preferable that the outer angle of the inclined portion 23 with respect to the inner surface 11D on the front side of the inclined portion is 180 ° −X = 165 to 105 °.

  Further, a short cylindrical portion 24 is provided on the rear side of the inner peripheral edge 20A of the protruding portion 20 so as to extend rearward. The short cylinder portion 24 is formed coaxially with the axis 21, that is, the axis of the drive shaft 6 </ b> A of the motor 6, so as not to obstruct the suction airflow, on the inner side of the edge 12 </ b> A of the rear opening 12. It is provided towards the side. A projecting fitting portion 25 is provided at the rear portion of the short cylinder portion 24 inwardly, that is, toward the axis 21. The protrusion-like fitting portion 25 is detachably fitted to a fitting receiving portion 26 provided so as to surround the primary side 8A on the front surface 9 of the main body case 2 so that the dust collecting case is attached to the cleaner body 1. 11 can be attached and fixed. In the present embodiment, the fitting receiving portion 26 and the protruding fitting portion 25 constitute a bayonet structure, and are arranged at three locations at intervals in the circumferential direction. Therefore, after inserting the protrusion-like fitting portion 25 into the start end 26A of the groove-like fitting receiving portion 26, the dust collecting case 11 is rotated with respect to the cleaner body 1 with the axis 21 as the rotation center of FIG. The dust collecting case 11 is coupled to the cleaner body 1 by rotating in the opposite direction to the arrow 27 and moving the protruding fitting portion 25 to the terminal end 26B of the groove-shaped fitting receiving portion 26. Be able to.

  The primary filter 13 is provided on an outer mounting frame 28 having a truncated conical shape with a tapered front side. The secondary filter 14 is provided on an inner mounting frame 29 having a tapered conical shape with a tapered front side. The inner mounting frame 29 is detachably mounted on the inner side of the outer mounting frame 28, that is, on the axis line 21 side. The filter assembly 15 is configured by attaching the inner attachment frame 29 to the outer attachment frame 28. The secondary filter 14 is finer than the primary filter 13. In this embodiment, the primary filter 13 has a mesh shape, and the secondary filter 14 has a cloth shape.

  An annular rear frame portion 29 </ b> A centering on the axis 21 is formed at the rear portion of the inner mounting frame 29. That is, the outer peripheral edge 29B of the rear frame portion 29A is formed in a circular shape when viewed from the front. The outer peripheral edge 29B can be brought into contact with the inner peripheral edge 20A side of the protruding portion 20. Further, a groove 29C is formed on the outer peripheral edge 29B over the entire circumference, and an annular seal member 30 is attached to the groove 29C. The seal member 30 has a circular outer edge so that the seal member 30 can be in close contact with the inner peripheral surface 24A of the short cylindrical portion 24. Further, an inner peripheral flange 31 is integrally provided rearwardly on the inner peripheral edge of the rear end of the rear rear frame portion 29A. This inner peripheral flange 31 can be in close contact with a seal portion 32 fitted in an annular groove 9A formed on the front surface 9 of the main body case 2 so as to surround the primary side 8A (intake port) of the electric blower 8. It has become. An annular rear frame portion 28 </ b> A centering on the axis 21 is formed at the rear portion of the outer mounting frame 28. And this rear side frame part 28A is comprised so that contact | adherence with the front surface of the rear side frame part 29A of the said inner side attachment frame 29 is possible. The outer peripheral edge 28B of the rear frame portion 28A of the outer mounting frame 28 is smaller in diameter than the outer peripheral edge 29B and has a circular shape when viewed from the front.

  Next, the effect | action is demonstrated about the said structure. When cleaning, the user grasps the handle portion 3 of the electric vacuum cleaner main body 1 with his / her hand, brings the suction port 10 obliquely downward, close to a surface to be cleaned (not shown) such as a floor surface, and the like. The operation unit 16A is operated. As a result, electric power is supplied from the rechargeable battery 4 and the motor 6 is operated to rotate the blade 7 at a high speed, thereby exhausting the air sucked from the primary side 8A to the secondary side 8B. For this reason, dust on the surface to be cleaned is sucked from the suction port 10 together with air. Of the dust sucked together with the air, coarse dust is separated from the air flow by the primary filter 13 and stored in the hollow portion 18. On the other hand, fine dust that has passed through the primary filter 13 reaches the secondary filter 14 together with the air flow, and is separated from the air flow by the secondary filter 14. At this time, the seal between the filter assembly 15 and the protrusion 20 is performed by the seal member 30. The seal member 30 is in close contact with the inner mounting frame 29 in the groove 29C. Further, as described above, the outer edge of the seal member 30 is circular, and the inner peripheral surface 24A of the short cylindrical portion 24 of the protrusion 20 is also circular with the axis 21 as the center. In the contact location of the said sealing member 30 and the short cylinder part 24, both contact uniformly. For this reason, the deformation | transformation nonuniformity etc. by a local stress do not arise easily in both contact location, As a result, it can become difficult to raise | generate an airflow leak. Then, the clean air that has passed through the secondary filter 14 reaches the secondary side 8B from the primary side 8A of the electric blower 8, and is exhausted to the outside of the cleaner body 1.

  When discharging dust stored in the dust collection case 11 after cleaning, it is necessary to remove the dust collection case 11 from the cleaner body 1. When removing the dust collecting case 11 from the cleaner main body 1, the cleaner main body 1 and the dust collecting case 11 are respectively gripped, and the dust collecting case 11 is directed in the direction of the arrow display 27 around the axis 21. Turn to. As a result, the protruding fitting portion 25 is moved from the terminal end 26B of the fitting receiving portion 26 to the starting end 26A to release the coupled state. From this state, the dust collection case 11 can be separated from the cleaner body 1 by moving the dust collection case 11 forward along the direction of the axis 21. Then, the dust collecting case 11 is gripped with the rear opening 12 side facing up, and the filter assembly 15 is removed from the dust collecting case 11 by grasping the inner peripheral flange 31 and pulling it upward. Remove. Then, the dust collection case 11 is carried with the rear opening 12 side facing up, and the dust collection case is placed on the trash can T with the rear opening 12 side down as shown in FIG. By slightly tilting 11, the dust D in the hollow portion 18 of the dust collection case 11 is discharged into the trash box T.

  When the dust collecting case 11 is transported in a posture in which the filter assembly 15 is removed and the rear opening 12 is on the upper side, dust in the hollow portion 18 of the dust collecting case 11 is tilted when the dust collecting case 11 is tilted. May accidentally spill. However, since the protruding portion 20 is provided in the rear opening 12 of the dust collecting case 11, even if the dust collecting case 11 is slightly inclined, dust is accidentally spilled by the protruding portion 20. Can be prevented. Furthermore, when discharging the dust D from the dust collection case 11, if the discharge rate of the dust D from the dust collection case 11 is fast, the dust D may rise in the trash can T and contaminate the surroundings. However, since the protruding portion 20 is provided in the rear opening 12 of the dust collecting case 11 and the inclined portion 23 is provided in the protruding portion 20, the hollow portion 18 of the dust collecting case 11 is provided. The falling speed of the dust D falling toward the rear opening 12 falls on the inclined portion 23 and decreases. For this reason, the discharge speed of the dust D from the dust collecting case 11 can be slowed, the rising of the dust D in the trash can T can be suppressed, and the surroundings of the trash can T can be made difficult to get dirty.

  After discarding the dust D from the dust collecting case 11, the filter assembly 15 is mounted on the protruding portion 20, and the protruding fitting portion 25 is further fitted to the fitting receiving portion 26 to By connecting the dust collecting case 11 to the cleaner body 1, the vacuum cleaner can be used again.

  As described above, in the embodiment, the inward protruding ridge 20 is formed in the vicinity of the rear opening 12 of the dust collecting case 11 and the protruding portion 20 is formed from the inner surface 11D of the dust collecting case 11. By providing the inclined portion 23 in which the inner dimensions 2R and 2r gradually decrease (2R> 2r) toward the inner peripheral edge 20A, the dust D is prevented from being discharged from the dust collecting case 11 without being blocked. Inadvertent spilling from the dust collecting case 11 can be prevented. Moreover, since the discharge speed of the dust D from the dust collecting case 11 can be reduced by the inclined portion 23 of the protruding portion 20, the rising of the dust D in the trash can T is suppressed, and the trash can T It can be made difficult to get dirty.

  Furthermore, by setting the inner angle X of the inclined portion 23 with respect to the inner surface 11D of the dust collection case 11 to be 15 ° to 75 °, the dust D is prevented from being discharged without preventing the dust D from being discharged from the dust collection case 11. Prepared spills can be reliably prevented. If the inner angle X is smaller than 15 °, when the dust collection case 11 is inadvertently inclined, the dust D may get over the inclined portion 23 and spill out from the dust collection case 11. On the other hand, when the inner angle X is larger than 75 °, the discharge of the dust D is suppressed by the inclined portion 23 and the dust D may remain in the dust collecting case 11.

  Further, the inner peripheral surface 24A of the short cylindrical portion 24 constituting the protruding portion 20 is formed in a circular shape, and the outer edge shape of the sealing member 30 of the filter assembly 15 is circular, and the sealing member 30 is the short cylindrical portion. Since the filter assembly 15 can be attached to and detached from the ridge portion 20 so as to be in close contact with the inner peripheral surface 24A of the outer periphery 24, both contact uniformly at the contact portion between the seal member 30 and the short tube portion 24. Therefore, deformation unevenness due to local stress is unlikely to occur at the contact point between the two, and as a result, the entire seal member 30 is hermetically adhered to the inner peripheral surface 24A of the short cylindrical portion 24 of the ridge portion 20 over the entire circumference. Therefore, it is possible to make it difficult to cause airflow leakage.

  FIG. 6 shows a second embodiment. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. In the second embodiment, the front frame of the rear frame portion 28A ′ of the outer mounting frame 28 ′ is formed on the outer peripheral edge 28B ′ having a circular shape, and the groove portion 28C ′ is formed over the entire circumference, and an annular seal is formed on the groove portion 28C ′. The member 30 is attached. The seal member 30 has a circular outer edge so that the seal member 30 can be in close contact with the inner peripheral surface 24 </ b> A that is circular in a front view in the short cylinder portion 24 that constitutes the ridge portion 20.

  In this way, the inner peripheral surface 24A of the short cylindrical portion 24 constituting the protruding portion 20 is formed in a circular shape, and the outer edge shape of the sealing member 30 of the filter assembly 15 is circular. Since the filter assembly 15 can be attached to and detached from the protruding portion 20 so as to be in close contact with the inner peripheral surface 24 </ b> A of the short cylindrical portion 24 of the strip portion 20, the entire seal member 30 is inside the short cylindrical portion 24. Since airtight contact is made over the entire circumference of the peripheral surface 24A, airflow leakage can be made difficult to occur.

  In addition, this invention is not limited to the above Example, A various deformation | transformation implementation is possible within the range of the summary of invention. For example, in each of the above embodiments, the gradient of the inclined portion is constant, but the gradient of the inclined portion may be changed in an angle range in which dust is not spilled carelessly and does not hinder dust discharge. Moreover, in each said Example, although the sealing member contacted the inner peripheral surface of the short cylinder part which comprises a protruding part, you may make it a sealing member contact the inner peripheral edge of a protruding part. Further, in each of the above embodiments, the filter assembly is detachably attached to the protrusion of the dust collecting case, but the protrusion is attached to the primary side of the cleaner body so as to be detachable. You may make it insert in the hollow part of the said dust collection case from the inner side of the inner periphery of a strip. Moreover, the filter of the filter assembly may be a single filter instead of a plurality of filters such as a double filter.

  As described above, the vacuum cleaner according to the present invention can be applied to various uses.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner main body 8 Electric blower 11 Dust collection case 11D Inner surface 12 Rear part opening part 15 Filter assembly 20 Projection part 20A Inner peripheral edge 23 Inclined part 24A Inner peripheral surface 30 Seal member R, r Radius

Claims (2)

A vacuum cleaner body with a built-in electric blower,
A dust collection case removable from the main body of the vacuum cleaner;
A filter assembly;
In a vacuum cleaner having
In the vicinity of the opening of the dust collection case, an inward protruding ridge is formed in an annular shape,
An electric vacuum cleaner provided with an inclined portion in which an inner dimension is gradually reduced from an inner surface of the dust collecting case toward an inner peripheral edge of the protruding portion. While forming the inner peripheral shape of the ridge portion into a circle,
The outer peripheral shape of the seal member of the filter assembly is circular,
2. The vacuum cleaner according to claim 1, wherein the seal member is configured to be in close contact with the inner periphery of the protrusion.

Images