JP6450928B2 - Electric blower and electric vacuum cleaner using the same - Google Patents

Description

  The present invention relates to an electric blower and a vacuum cleaner including the same.

  In conventional electric blowers for electric vacuum cleaners, a gap is formed between the fan and the fan case, so a part of the airflow discharged from the fan outlet through the fan inlet is passed through the fan. Since a circulating flow that flows back to the intake port through a gap between the fan case and the fan case occurs, there is a drawback that the blowing efficiency is lowered.

  In order to prevent this circulation flow, a gel-type sealing material is filled inside the fan side of the air inlet of the fan case, and the fan is brought into contact with the sealing material (for example, Patent Documents). 1). In addition, there has been proposed a sealing material obtained by punching a sheet-shaped sealing material in an annular shape and arranged inside a fan case via a support (see, for example, Patent Document 2).

Japanese Patent Laid-Open No. 9-236098 JP 2011-247098 A

  However, in the configuration in which the gel-like sealing material of the conventional electric blower described in Patent Document 1 is disposed, the amount of the sealing material is not stable, the degree of contact with the fan varies, performance degradation and motor lock There was a problem of inviting.

  Moreover, in the structure which arrange | positions the cyclic | annular sealing material of the conventional electric blower described in the said patent document 2, since the sealing material punching end surface becomes an edge, the fan case to which R was added in order to improve ventilation efficiency In order to fix the inside of the air intake hole, it is necessary to attach the seal material to a position not affected by the R portion via a seal material support that shifts to the axial fan side. In such a space, the degree of freedom in shape is greatly restricted, and the desired characteristics cannot be obtained.

  In addition, since the sealing material support is located inside the fan case, when the adhesion between the sealing material support and the fan case is reduced, the sealing material support is sucked into the fan by the suction force of the fan, There was a risk of causing a motor lock.

  The present invention solves the above-described conventional problems, and an electric blower that can safely and accurately prevent a circulating flow flowing through a gap between a fan and a fan case, and a highly reliable electric device equipped with the electric blower. The purpose is to provide a vacuum cleaner.

In order to solve the above-described conventional problems, an electric blower of the present invention includes a fan fixed to an armature rotating shaft and rotationally driven, and an air inlet that covers the fan and guides an airflow to the air inlet of the fan at a central portion. A fan case having an annular disk-shaped sealing material that contacts and seals with the suction port end, and a sealing material support that is molded with resin and contains the sealing material and disposed in the fan case. In the electric blower, the intake port has a cylindrical portion that rises substantially perpendicular to the axially opposite fan side, and the sealing material support is bell-bell shaped toward the fan side so as to guide the wind toward the intake port A drooping portion, a ring-shaped flat portion that faces the fan side and is attached to the sealing material at a substantially right angle with respect to the armature rotation shaft, and a groove portion into which the cylindrical portion is inserted. The bottom surface is positioned on the side opposite to the fan from the ring-shaped flat portion, the inner peripheral surface of the groove is in contact with the outer peripheral surface of the cylindrical portion, and the outer peripheral surface of the groove is in contact with the inner peripheral surface of the cylindrical portion. In addition, the end surface of the cylindrical portion of the cylindrical portion substantially contacts and is fixed to the bottom surface of the groove, and the sealing material support is formed on the circumferential surface by the annular groove portion and the annular portion of the intake port of the annular fan case. Positioned and secured to the fan case with a plane that is substantially perpendicular to the rotation axis, preventing one-contact between the sealing material and the end of the fan inlet, and flowing through the gap between the fan and the fan case Circulating wind can be prevented.

  Moreover, the vacuum cleaner of this invention mounts the electric blower of any one of Claims 1-8, and can provide the vacuum cleaner excellent in suction performance.

  The electric blower of the present invention has a simple method in which a grooved sealing material support is inserted and attached from the outside of the fan case to a cylindrical portion that protrudes from the fan case to the side opposite to the fan side. In addition to accurately and reliably preventing the circulating flow through the gap, it is possible to fix the sealant support after confirming the contact condition of the sealant, and the replacement of the sealant support is easy and inexpensive. A safe and high-performance electric blower can be provided. Moreover, the electric vacuum cleaner with improved reliability can be provided by mounting the electric blower.

Sectional perspective view of the electric blower in Embodiment 1 of the present invention Partially enlarged sectional perspective view of the electric blower Half sectional perspective view of sealing material support of the electric blower Perspective view of the fan case of the electric blower Half sectional perspective view of sealing material support of electric blower in Embodiment 2 of the present invention Perspective view of the fan case of the electric blower A perspective view of the fan case with a sealing material support attached Partial enlarged view of the sealing material support Half sectional perspective view of sealing material support of electric blower in Embodiment 3 of the present invention The principal part expansion perspective view of the fan case of the electric blower The perspective view which shows the state before attaching the sealing material support body to a fan case The perspective view which shows the state which attached the sealing material support body to the fan case Half sectional perspective view of sealing material support of electric blower in Embodiment 4 of the present invention Perspective view of the fan case of the electric blower Cross-sectional perspective view showing assembly state of sealing material support and fan case Cross-sectional perspective view of a blower unit showing another configuration example of the sealing material support Cross-sectional perspective view of sealing material support of other configuration

A first invention includes a fan that is fixed to an armature rotating shaft and is driven to rotate, a fan case that covers the fan and has a suction port that guides an airflow to a suction port of the fan at a central portion, and the suction port end portion In the electric blower comprising an annular disk-shaped sealing material that contacts and seals, and a sealing material support that is molded of resin and incorporates the sealing material and is disposed in the fan case, the intake port is opposite to the axial direction. A cylindrical portion that rises substantially vertically on the fan side, and the sealing material support faces a bell mouth-like hanging portion that faces the fan side so as to guide air to the suction port, and faces the fan side A ring-shaped flat surface portion to which the sealing material is attached at a substantially right angle with respect to the armature rotation axis; and a groove portion into which the cylindrical portion is inserted. The groove bottom surface of the groove portion is opposite to the ring-shaped flat surface portion from the ring-shaped flat surface portion. F The outer peripheral surface of the groove portion is in contact with the outer peripheral surface of the cylindrical portion, the outer peripheral surface of the groove portion is in contact with the inner peripheral surface of the cylindrical portion, and the front end surface of the cylindrical portion of the cylindrical portion. The seal material support is positioned on the circumferential surface by the annular groove and the annular portion of the intake port of the annular fan case, and is substantially perpendicular to the rotation axis. The flat surface is secured to the fan case to prevent one-side contact between the sealing material and the end of the fan suction port, thereby preventing circulating air flowing through the gap between the fan and the fan case.

  In the second invention, in particular, at least one projecting rib projecting from the front end surface of the cylindrical portion of the first invention to the axially opposite fan side is provided, and the projecting rib is inserted into the sealing material support. A hole is provided, and the fan case and the sealing material support are positioned and fixed by bending the tip end of the protruding rib protruding from the insertion hole in a state where the protruding rib is inserted into the insertion hole. Even if the fan case and the sealing material support are loosely fitted due to expansion or vibration, the fan case and the sealing material support are not detached, and the fixing can be performed more safely.

  In particular, the third invention is provided with at least one projecting rib projecting from the front end surface of the cylindrical portion of the first invention, and the sealing material support is provided with an insertion hole into which the projecting rib is inserted, A slit is provided at the center of the protruding rib, and a protrusion is provided on the outer peripheral side. The protrusion has a width between protrusions larger than the width of the insertion hole. It protrudes outward from the insertion hole and positions and fixes the fan case and the sealing material support. By simply inserting the sealing material support into the fan case, the protrusion is stopped and the fan case and the sealing material support Fixing can be performed easily, and since it is not necessary to bend after inserting the protruding rib into the insertion hole, the assembly process is simplified.

In the fourth aspect of the invention, in particular, the sealing material support of the second or third aspect of the present invention is smoothly constructed with a large arc R having a radius of 1 mm or more at the edge portion composed of the bell mouth-like hanging part and the outer peripheral surface on the fan side. Since the R portion is provided and the insertion hole is positioned on the outer peripheral side from the R portion, there is no depression or protrusion in the R portion that has the fastest flow velocity and affects the intake performance, so airflow is not disturbed. Performance degradation and noise increase can be prevented.

  In the fifth invention, in particular, the insertion hole according to any one of the second to fourth inventions is provided in a recess recessed toward the fan side from the other part, and the protruding rib protrudes from the outer peripheral surface of the sealing material support on the side opposite to the fan. This prevents the airflow from being disturbed by the protruding ribs, thereby preventing performance degradation and noise increase.

  In particular, the sixth aspect of the invention adds threading to the cylindrical portion of the fan case of the first invention, adds threading corresponding to the threading to the groove portion of the sealing material support, and attaches the sealing material support to the cylindrical portion. The fan case and the seal material support are fixed by screwing into the seal, the seal material support is easy to remove, the seal state is the easiest to check and replace, and a more stable seal state is achieved. it can.

  In the seventh invention, in particular, the sealing material according to any one of the first to sixth inventions is in contact with the outer inner surface of the bell mouth-like hanging part and also with the inner peripheral surface of the cylindrical part. The case and the sealing material support can be reliably sealed, and performance degradation and noise increase can be prevented.

The eighth invention, in particular, adhesion between the sealing material of any one of the first to fifth and seventh invention and the outer peripheral surface of the bell mouth-like hanging portion, adhesion between the sealing material and the inner peripheral surface of the cylindrical portion, Adhesion between the cylindrical part and the inner peripheral side outer surface of the groove part is performed simultaneously with the same adhesive, and the sealing material is pressed by simply applying a multiple adhesive to the sealing material mounting part of the sealing material support. In this case, the adhesive that protrudes from the contact surface flows into each of them, so that all adhesive fixing can be realized, and inexpensive and reliable fixing can be realized.

  A vacuum cleaner according to a ninth aspect is equipped with the electric blower according to any one of claims 1 to 8, and can provide a vacuum cleaner excellent in suction performance.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiment.

(Embodiment 1)
1 is a cross-sectional perspective view of an electric blower according to Embodiment 1 of the present invention, FIG. 2 is a partially enlarged cross-sectional perspective view of the electric blower, and FIG. 3 is a half-sectional perspective view of a sealing material support of the electric blower. 4 and 4 are perspective views of a fan case of the electric blower.

  1-4, the electric blower in this Embodiment is comprised from the motor part 40 and the air blower part 41 as FIG. 1-4 shows.

  The electric motor unit 40 includes a casing 40 a that includes a bottomed cylindrical bracket 7 having one end opened and a frame 8 that closes the opening of the bracket 7. The casing 40a incorporates a field 1 that is a stator, and an armature 2 that is a rotor is rotatably accommodated by a bearing 4 in the center. The armature 2 has a commutator 5 connected to an armature winding (not shown), and a field winding (not shown) and an armature winding via a brush unit 9 fixed to the bracket 7. Rotational force is obtained by connecting wires and energizing them.

  The blower unit 41 is mainly composed of a fan 11, an air guide 10, and a fan case 16, and includes a front shroud 13 having a suction port 12 at a central portion, a rear shroud 14 opposed thereto, and a plurality of blades fixed therebetween. 15 is attached to the armature rotating shaft 3 protruding from the frame 8 with a nut 6 or the like. The air guide 10 attached to the frame 8 plays a role of rectifying the airflow discharged from the fan 11 and flowing it into the electric motor unit 40. The fan case 16 covers the fan 11 and the air guide 10 and is press-fitted and fixed to the frame 8. An air inlet 17 is provided at the central portion of the fan case 16 and plays a role of guiding an air flow to the air inlet 12 of the fan 11.

  As shown in FIGS. 2 to 4, the fan case 16 of the electric blower in the present embodiment has a cylindrical portion 18 in which an end portion of the air inlet 17 rises toward the fan side opposite to the axial direction. The cylindrical portion 18 is easier to process and reduces the pressing process than the conventional bell mouth shape bent 180 degrees toward the fan side, and can reduce the occurrence of cracks and wrinkles, thereby improving productivity. Further, another sealing material support 26 is mounted from the outer surface side of the fan case 16. The sealing material support 26 includes an R portion 29 in which the inner diameter surface of the bell mouth-like hanging portion 27 and the outer peripheral surface on the fan side are smoothly formed with a large R.

  On the fan side of the seal material support 26, there is a ring-shaped flat portion 28 to which a disk-shaped seal material 25 such as EVA is attached, and a groove portion 30 having a bottom surface on the side opposite to the fan from the ring-shaped flat portion 28 is configured. Has been. The cylindrical portion 18 is inserted into the groove portion 30, and the position of the cylindrical portion tip surface 19 is fixed and fixed by contacting the groove bottom surface 31.

With this configuration, since the groove bottom surface 31 and the cylindrical tip end surface 19 are positioned on the circumferential surface, a plane perpendicular to the armature rotating shaft 3 can be realized, and one-side contact between the sealing material 25 and the suction port 12 is prevented. it can.

  Further, the outer peripheral side inner surface 33 of the groove portion 30 is substantially in contact with the outer peripheral surface 21 of the cylindrical portion 18 and the inner peripheral side outer surface 32 of the groove portion 30 is substantially in contact with the inner peripheral surface 20 of the cylindrical portion 18. Since the contact is made on the surface, more reliable fixing can be realized, and even when there is a gap, leakage air between the inside and outside of the fan case 16 can be prevented by the labyrinth effect.

  Further, since the sealing material support 26 is located on the outer peripheral side of the fan case 16, the sealing material support 26 is not detached from the fan case 16 even if the sealing material support 26 receives a load on the fan 11 side due to intake air pressure or the like. Abnormalities such as fan breakage and motor lock due to suction of the support 26 can be reliably prevented.

  According to the electric blower configured as described above, by adjusting any of the depth of the groove 30, the length of the cylindrical portion 18 of the fan case 16, and the thickness of the sealing material 25, the end of the suction port 12 and the seal It is easy to achieve the most efficient configuration in which the material 25 makes a light contact, and the airflow discharged from the fan 11 passes between the fan 11 and the fan case 16 and circulates to the suction port 12 to control the leakage air. It can be prevented safely and can improve the ventilation efficiency.

  Further, in the present embodiment, the sealing material 25 is in contact with the outer surface of the bell mouth-like hanging part 27 and is also in contact with the inner peripheral surface 20 of the cylindrical part 18. With this configuration, the inner diameter of the sealing material 25 and the inner diameter of the bell mouth-like hanging part 27 are made closer, and the turbulence of the air flow due to this dimensional difference can be reduced.

(Embodiment 2)
FIG. 5 is a half sectional perspective view of a sealing material support of an electric blower according to Embodiment 2 of the present invention, FIG. 6 is a perspective view of a fan case of the electric blower, and FIG. The perspective view in the state which mounted | wore the body, FIG. 8 is the elements on larger scale of the sealing material support body. In addition, about the same part as the electric blower in the said Embodiment 1, the description is abbreviate | omitted using the same code | symbol.

  As shown in FIGS. 5 and 6, the electric blower in the present embodiment has at least one protruding rib 22 on the cylindrical portion front end surface 19, and the sealing material support 26 has a protruding portion. An insertion hole 34 corresponding to the rib 22 is provided.

  7 and FIG. 8, after inserting the protruding rib 22 into the insertion hole 34, the protruding rib 22 is bent to the outer peripheral side, so that the fan case 16 and the sealing material support 26 are more securely fixed. Is what you do.

  According to the electric blower in the present embodiment, even if the fan case 16 and the seal material support 26 are loosely fitted due to thermal expansion or vibration, the fan case 16 and the seal material support 26 are not detached. Fixing can be realized safely. Further, even if the fitting allowance between the fan case 16 and the sealing material support 26 is set to be loose, it does not come off, so that the fitting can be loosened to improve workability.

  The cylindrical portion 18 and the groove portion 30 are holes in the bottom surface portion that are in contact with each other on the inner and outer peripheral surfaces. By bending the tip end portion of the protruding rib 22 to the outer peripheral side, a minute gap is generated due to the labyrinth effect. Therefore, there is no leakage air flow that causes a problem.

(Embodiment 3)
FIG. 9 is a half sectional perspective view of a sealing material support of an electric blower according to Embodiment 3 of the present invention, FIG. 10 is an enlarged perspective view of a main part of a fan case of the electric blower, and FIG. FIG. 12 is a perspective view showing a state where the body is attached to the fan case, and FIG. 12 is a perspective view showing a state where the sealing material support is attached to the fan case. In addition, about the same part as the electric blower in the said embodiment, the description is abbreviate | omitted using the same code | symbol.

  As shown in FIGS. 9 and 10, the electric blower in the present embodiment is provided with a slit 23 at the center of the protruding rib 22 described in the second embodiment and a protrusion 24 at both ends, and an insertion hole. 34 is provided with a slit 36 having a width equal to the width of the protrusion 24. The slit 36 may be formed integrally with the recess 35.

  The width of the insertion hole 34 is substantially the same as the width of the protruding rib 22, the width between the protrusions at the tip of the protrusion 24 is larger than the width of the insertion hole 34, and the width of the slit 36 is the width between the protrusions 24. Is set to be approximately equivalent.

  Since the electric blower according to the present embodiment is configured as described above, when the sealing material support 26 is inserted into the fan case 16 as shown in FIGS. 11 and 12, the space between the protrusions 24 is elastically inserted. When it reaches the slit 36 by passing through the insertion hole 34 and reaches the slit 36, it is restored to its original size by the elasticity, and the projection 24 is locked to fix the fan case 16 and the sealing material support 26. To do.

  In this embodiment, since it is not necessary to bend after inserting the protruding rib 22 into the insertion hole 34, the fan case 16 and the sealing material support 26 can be fixed at low cost by only one step of insertion.

  In addition, the inner diameter surface of the bell mouth-shaped hanging portion 27 and the outer peripheral surface on the fan side are smoothly formed with an R larger than R1 and an R portion 29 is formed, and the protrusion 24 inserted into the insertion hole 34 is formed from the R portion 29. Further, by positioning it on the outer peripheral side, there is no depression or protrusion in the R portion 29 that has the fastest flow velocity and affects the intake performance, and the airflow is not disturbed, so that it is possible to prevent performance degradation and noise increase.

  Further, if the insertion hole 34 is provided in a recess 35 that is recessed toward the fan 11 with respect to the other part, and the dimension is set so that the protruding part 24 does not protrude from the outer surface of the sealing material support 26, the protruding part 24 It can prevent turbulence of the air current and prevent performance degradation and noise increase. At this time, it is desirable that the tip end portion of the protruding rib 22 is substantially flush with the surface of the sealing material support 26.

  The fan case 16 and the sealing material support 26 can be sealed by bringing the outer diameter of the sealing material 25 into contact with the inner peripheral surface 20 of the cylindrical portion 18, and an insertion hole provided in the sealing material support 26. Since the sealing performance can be maintained even when the gap between the protrusion 34 and the protrusion 24 is large, the dimensional tolerance can be widened, and the manufacturing cost can be reduced. Further, by simultaneously regulating the inner and outer diameter portions of the sealing material 25, not only the sealing performance is enhanced, but also the axial displacement of the sealing material 25 can be prevented and the sealing performance can be further enhanced.

  In the electric blower according to the above-described embodiment, the outer peripheral surface of the sealing material 25 and the bell mouth-shaped hanging portion 27, the inner peripheral surface 20 of the sealing material 25 and the cylindrical portion 18, and the outer peripheral side 32 of the cylindrical portion 18 and the groove portion 30. If the same adhesive (not shown) is used at the same time, the seal material 25 is pressed only by applying a multiple adhesive to the ring-shaped flat portion 28 (see FIG. 3). The adhesive that protrudes from the contact surface flows into each of them, so that all adhesive fixing can be realized, and inexpensive and reliable fixing can be realized.

(Embodiment 4)
FIG. 13 is a half sectional perspective view of a sealing material support body of an electric blower according to Embodiment 4 of the present invention, FIG. 14 is a perspective view of a fan case of the electric blower, and FIG. 15 is the sealing material support body and the fan case. It is a cross-sectional perspective view which shows the assembly state of. In addition, about the same part as the electric blower in the said embodiment, the description is abbreviate | omitted using the same code | symbol.

  As shown in FIGS. 13 to 15, the electric blower in the present embodiment adds threading to the cylindrical portion 18 of the fan case 16, and the corresponding inner surface 33 of the groove portion 30 of the sealing material support 26 has threading corresponding thereto. And the fan case 16 and the seal material support 26 are fixed by screwing the seal material support 26 into the cylindrical portion 18. According to the present embodiment, the sealing material support 26 can be easily removed, and the seal state can be confirmed and replaced most easily, and a more stable seal state can be realized.

  Also, as shown in FIGS. 16 to 17, by extending the outer peripheral side of the seal material support 26 to the vicinity of the outer diameter of the fan 11 and also serving as a current plate, the airflow flowing into the intake port 17 is smoother. The air blowing efficiency can be further improved.

  Further, since a resin plate is present so as to cover the fan case 16, a soundproofing measure can also be realized. In this case, a soundproofing material (not shown) is disposed between the sealing material support 26 and the fan case 16, or induction fins (not shown) are added to the rectifying plate portion 37 of the sealing material support 26. If done, it is possible to increase the effect.

  Although not particularly illustrated, if the electric blower in the above embodiment is mounted on a vacuum cleaner, an inexpensive, safe and high-performance vacuum cleaner can be realized.

  As described above, the electric blower according to the present invention can prevent leakage air between the fan case and the fan with high accuracy by a simple method of attaching the sealing material support to the air inlet of the fan case from the outside, and There is no danger that the sealing material support is sucked in, and it is possible to provide a high-performance electric blower safely, and a high-performance vacuum cleaner can be realized by installing the electric blower. It can be applied to various vacuum cleaners, not just for business use.

DESCRIPTION OF SYMBOLS 1 Field 2 Armature 3 Armature rotating shaft 4 Bearing 5 Commutator 6 Nut 7 Bracket 8 Frame 9 Brush unit 10 Air guide 11 Fan 12 Suction port 13 Front shroud 14 Rear surface shroud 15 Blade 16 Fan case 17 Air inlet 18 Cylindrical part DESCRIPTION OF SYMBOLS 19 Cylindrical part front end surface 20 Inner peripheral surface 21 Outer peripheral surface 22 Projection rib 23,36 Slit 24 Protrusion part 25 Sealing material 26 Sealing material support body 27 Bell mouth-shaped drooping part 28 Ring-shaped plane part 29 R part 30 Groove part 31 Groove bottom face 32 Inner peripheral side outer surface 33 Outer peripheral side inner surface 34 Insertion hole 35 Depression 37 Rectification plate

Claims (9)

A fan fixed to the armature rotating shaft and driven to rotate; a fan case that covers the fan and has an air inlet that guides an airflow to the air inlet of the fan in the center; and an annular disk that seals contact with the end of the air inlet In the electric blower including a sealing material of a shape and a sealing material support that is molded with resin and contains the sealing material and disposed in the fan case, the intake port is substantially perpendicular to the axially opposite fan side The sealing material support has a bell mouth-like hanging portion that faces the fan side so as to guide the wind toward the suction port, and faces the fan side and is on the armature rotating shaft. It has a ring-shaped plane portion to which the sealing material is attached at a substantially right angle, and a groove portion into which the cylindrical portion is inserted, and the groove bottom surface of the groove portion is located on the side opposite to the fan from the ring-shaped plane portion. The outer peripheral side inner surface of the groove portion is in contact with the outer peripheral surface of the cylindrical portion, the outer peripheral side outer surface of the groove portion is in contact with the inner peripheral surface of the cylindrical portion, and the tip end surface of the cylindrical portion of the cylindrical portion is substantially in contact with the groove bottom surface. An electric blower characterized by being abutted and positioned and fixed. At least one protruding rib protruding from the front end surface of the cylindrical portion toward the opposite side of the fan in the axial direction is provided, and an insertion hole into which the protruding rib is inserted is provided in the sealing material support, and the protruding rib is provided in the insertion hole. 2. The electric blower according to claim 1, wherein the fan case and the sealing material support are positioned and fixed by bending a tip end of the protruding rib protruding from the insertion hole in an inserted state in an outer peripheral direction. At least one protruding rib protruding from the front end surface of the cylindrical portion is provided, and an insertion hole into which the protruding rib is inserted is provided in the sealing material support. A slit is provided at the center of the protruding rib, and a protruding portion is provided on the outer peripheral side. Each of the protrusions is larger than the width of the insertion hole, and the protrusion protrudes outward from the insertion hole when the tip end surface of the cylindrical part is inserted to the bottom surface of the groove. The electric blower according to claim 1, wherein the support is positioned and fixed. The sealing material support includes an R portion that is smoothly formed by a large arc R having a radius of 1 mm or more at an edge portion that includes a bell mouth-like hanging portion and a non-fan-side outer peripheral surface, and has an insertion hole on the outer peripheral side from the R portion. The electric blower according to claim 2 or 3, wherein the electric blower is located at the position. 5. The insertion hole according to claim 2, wherein the insertion hole is provided in a recess recessed toward the fan side from the other portion, and the protruding rib does not protrude from the outer peripheral surface of the sealing material support opposite to the fan. Electric blower. The fan case and the sealing material support are formed by adding threading to the cylindrical portion of the fan case, adding threading corresponding to the threading to the groove portion of the sealing material support, and screwing the sealing material support into the cylindrical portion. The electric blower according to claim 1, wherein the electric blower is fixed. The electric blower according to any one of claims 1 to 6, wherein the sealing material is in contact with an outer inner surface of the bell mouth-like hanging portion and is also in contact with an inner peripheral surface of the cylindrical portion. Adhesion between the sealing material and the outer peripheral surface of the bell mouth-like hanging part, adhesion between the sealing material and the inner peripheral surface of the cylindrical portion, and adhesion between the cylindrical portion and the inner peripheral side outer surface of the groove portion are simultaneously performed with the same adhesive. It performs, The electric blower of any one of Claims 1-5 or 7 characterized by the above-mentioned. The vacuum cleaner carrying the electric blower of any one of Claims 1-8.

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