WO2009099200A1

WO2009099200A1 - Electric cleaner and method of producing the same

Info

Publication number: WO2009099200A1
Application number: PCT/JP2009/052086
Authority: WO
Inventors: Yoshiyuki Iwata; Ritsuo Takemoto; Tsuyoshi Sato; Ikuo Oshima
Original assignee: Kabushiki Kaisha Toshiba; Toshiba Consumer Electronics Holdings Corporation; Toshiba Home Appliances Corporation
Priority date: 2008-02-08
Filing date: 2009-02-06
Publication date: 2009-08-13
Also published as: KR101252346B1; JP4358278B2; RU2429777C1; JP2009183609A; EP2253259A1; CN101932274B; EP2253259A4; CN101932274A; KR20100103706A

Abstract

An electric cleaner has extendible support rods (44) projecting from a lower case (2) of a body case (5) toward an upper case (3) of the body case (5). An electric blower section (11) is placed on the support rods (44). The upper case (3) is mounted in a covering manner to the lower case (2), and this causes the electric blower section (11) to be held between the support rods (44) and support wheels (45). The structure facilitates mounting of the electric blower section (11) into a blower chamber (6) to improve productivity.

Description

Vacuum cleaner and method of manufacturing the same

The present invention relates to a vacuum cleaner having an electric blower housed in a housing chamber and a method for manufacturing the same.

Conventionally, this type of vacuum cleaner includes a main body case having a lower case, an upper case, and a lid. In the main body case, a blower chamber which is a storage chamber is defined between the lower case and the upper case, and an electric blower is stored in the blower chamber. Further, the main body case has a dust collection chamber communicating with the air blowing chamber between the lower case and the lid, and the dust collection chamber has a dust collection portion such as a dust bag, that is, a paper pack. Removably housed. And when accommodating an electric blower in an air blower chamber, in order not to transmit the vibration by the drive of an electric blower to a main part case, and in order to secure airtightness with a dust collection room, on the suction side of an electric blower A shock absorber such as rubber is attached to each of the centrifugal fan side and the motor side that is the exhaust side, and the electric blower to which these rubbers are attached is assembled to the electric blower chamber (see, for example, Patent Document 1).
Japanese Utility Model Publication No. 6-41651 (page 7-9, FIG. 1 and FIG. 4)

However, in the above vacuum cleaner, when the electric blower is assembled to the blower chamber, the shock absorber is fitted to a rib or the like protruding from the lower case, and in this fitted state, the rib protruding from the upper case and It is necessary to perform complicated work such as attaching the upper case to the lower case so that the shock absorber is sandwiched between the ribs of the lower case. There is a problem that the assembling property of the electric blower, that is, the manufacturability of the vacuum cleaner is not good, for example, there is a possibility of causing a crack.

The present invention has been made in view of such points, and an object thereof is to provide a vacuum cleaner with good manufacturability and a method for manufacturing the same.

The present invention relates to a lower case and a main body case including an upper case that is attached to the lower case so as to oppose at least a part of the upper portion of the lower case and defines a storage chamber between the lower case and a shaft. An electric blower that has a direction and is housed in a storage chamber; and a telescopic biasing member that protrudes from the lower case side to the upper case side and supports the lower part of the electric blower unit at least upwardly. And a support member that is provided on the upper case side and sandwiches the electric blower portion with the urging member.

The present invention also includes a lower case, and a main body case including an upper case that is attached to the lower case so as to face at least a part of the upper portion of the lower case and that defines a storage chamber between the lower case and the lower case. An electric blower having an axial direction and housed in the housing chamber, a biasing member that protrudes from the lower case side to the upper case side and can be expanded and contracted, and a support member provided on the upper case side A method for manufacturing an electric blower, in which an electric blower is placed on an urging member, and the upper case is attached to the lower case so that the electric blower is sandwiched between the urging member and the support member. Is.

According to the present invention, the electric blower can be easily incorporated into the accommodation chamber, and the manufacturability is improved.

It is explanatory sectional drawing which shows the vacuum cleaner of one embodiment of this invention. It is explanatory sectional drawing which shows the state before attaching an upper case with respect to the lower case of the manufacturing method of a vacuum cleaner same as the above. It is explanatory sectional drawing which shows the state which mounted the electric ventilation part of the manufacturing method of a vacuum cleaner same as the above on the urging | biasing member. It is explanatory sectional drawing which shows the state which covered the upper case of the manufacturing method of a vacuum cleaner same as the above. It is a cross-sectional view which shows the principal part of a vacuum cleaner same as the above. It is explanatory sectional drawing which shows the supporting member of a vacuum cleaner same as the above. It is a perspective view which shows a vacuum cleaner same as the above.

Explanation of symbols

2 Lower case 3 Upper case 5 Body case 6 Blower chamber as housing chamber 11 Electric blower 41 Electric blower 42 Motor cover as cover body 43 Coil spring as blower support member 44 Support rod as biasing member 45 Support

member Support wheel

85, 98 Supported part 96 Upper connector as upper connection part 105 Control board as control part 106 Lower connector as lower connection part

Hereinafter, the configuration of a vacuum cleaner according to an embodiment of the present invention will be described with reference to FIGS. 1 to 7.

1 to 7, reference numeral 1 denotes a vacuum cleaner main body, and the vacuum cleaner main body 1 is a so-called canister type electric vacuum cleaner capable of running on a floor surface as a surface to be cleaned.

The vacuum cleaner main body 1 includes a lower case 2 which is a case whose upper side is opened, an upper case 3 which is a case disposed opposite to the rear upper side of the lower case 2 and covers the rear upper side, and a lower case 2 A main body case 5 having a lid 4 that can be opened and closed on the front upper side is provided. In the main body case 5, a blower chamber 6 as a storage chamber is defined between the lower case 2 and the upper case 3, and a dust collection chamber 7 is defined between the lower case 2 and the lid body 4. A partition wall 8 is provided between the air blowing chamber 6 and the dust collecting chamber 7 to partition them.

The air blower chamber 6 is a space defined by the lower case 2 and the upper case 3 being hermetically assembled by screws or the like via a seal packing (not shown). It is accommodated so that the direction is in a state along the front-rear direction. Further, the air blowing chamber 6 communicates with the outside of the main body case 5 through an exhaust hole 12 formed in the rear portion of the upper case 3. Further, on the side of the air blowing chamber 6, a cord reel chamber is defined in which a cord reel around which a power cord 13 capable of supplying power from the outside to the electric blower 11 is wound is accommodated.

Here, in the cord reel chamber, the power cord 13 can be led out from a cord outlet opening formed in the rear part of the lower case 2.

On the other hand, in the dust collecting chamber 7, for example, a dust collecting part such as a paper pack or a cyclone dust collecting device can be attached and detached. A main body suction port 21 is bored in the lower case 2 at the front of the dust collection chamber 7. A hose body 22 is detachably provided in the main body suction port 21, and a hand operating section 23 is provided at the tip of the hose body 22. In addition, the hand operating unit 23 is provided with a gripping part 25 that is gripped by an operator, and a setting button 26 for setting the operation mode of the electric blower 11 by the operator. A plurality are provided. Further, an extension pipe 28 and a floor brush 29 as a suction port body are sequentially connected to the distal end portion of the hand operation unit 23.

The partition wall portion 8 includes a rear partition wall 31 located at the rear portion on the air blowing chamber 6 side, a front partition wall (not shown) located at the front portion on the dust collecting chamber 7 side, and the air blowing chamber continuous to the front partition wall. 6 and a side partition (not shown) that divides the cord reel chamber, and a drive unit that operates various mechanisms (not shown) in the cleaner body 1 is attached to the rear of the front partition.

The rear partition wall 31 is formed with a round hole-shaped rear communication hole 37, and the front partition wall is formed with a round hole-shaped front communication hole, and the rear communication hole 37 and the front communication hole are formed. Are hermetically connected by a duct (not shown).

The electric blower 11 is connected to the rear of the rear communication hole 37 in an airtight manner. A filter (not shown) is disposed on the dust collection chamber 7 side, which is the front part of the front communication hole.

The side partition is formed with a communication port for communicating the air blowing chamber 6 and the cord reel chamber.

The upper part of the rear partition 31, the front partition and the side partition is a seal member that is sandwiched between the upper case 3 and hermetically partitions the air blowing chamber 6, the dust collection chamber 7, and the cord reel chamber. A packing (not shown) is attached.

As shown in FIGS. 1 to 5, the electric blower 11 includes a heavy fan motor, that is, an electric blower 41, and a holding member as a relatively lightweight cover body that covers and holds the electric blower 41 in a capsule shape. A substantially cylindrical motor cover 42, and a plurality of coil springs 43 as a fan support member that elastically supports the electric blower 41 with respect to the motor cover 42 and attenuates rotational vibration of the electric blower 41, A plurality of supporting elastic portions as urging members attached to the lower case 2, for example, a pair of front and rear, that is, four supporting rods 44, and a plurality of rotating members as supporting members attached to the upper case 3, for example, 1 It is sandwiched from above and below by a pair of support wheels 45.

The electric blower 41 has a bottomed cylindrical motor frame 47 as a case body, and a substantially cylindrical fan cover 48 that is fitted to the front side that is the opening side of the motor frame 47 and has a larger diameter than the motor frame 47. The motor cover 42 is held in the motor cover 42 in the axial direction. Then, around the motor frame 47 of the electric blower 41, an inner peripheral side spring support 51 and an outer peripheral side spring support 52, which are spring receiving rings as blower support member receiving portions, are attached. , 52, the coil spring 43 is held, and the electric blower 41 is elastically supported with respect to the motor cover 42 side.

In the motor frame 47, an electric motor 55 is accommodated as an electric part that is a drive source. The electric motor 55 is configured such that a rotating shaft 56 is connected to a centrifugal fan 57 that is a moving blade or fan covered with a fan cover 48 and rotates the centrifugal fan 57.

In addition, a plurality of rectangular exhaust ports 61 are formed in the circumferential surface near the rear side of the motor frame 47 so as to be spaced apart from each other at substantially equal intervals in the circumferential direction. A brush mechanism portion (not shown) that is electrically connected to the commutator of the electric motor 55 is attached to a mounting hole (not shown) drilled in the mounting portion.

In addition, an air inlet 66 is formed in the center of the fan cover 48.

Then, the electric blower 41 sucks air from the intake port 66 by the centrifugal fan 57 rotated by the electric motor 55, and the sucked air passes from the inside of the motor frame 47 to the outside of the motor frame 47 through the exhaust port 61. By exhausting, negative pressure can be applied to the duct, the dust collection chamber 7, the hose body 22 (FIG. 7), the extension pipe 28 (FIG. 7), the floor brush 29 (FIG. 7), and the like. .

The inner spring support 51 is formed in a shape along the outer periphery of the motor frame 47, for example, an annular shape made of, for example, synthetic resin or metal, and holds the electric blower 41 in close contact with the periphery of the motor frame 47. Yes. The inner peripheral spring support 51 is attached to the motor frame 47 with the electric fan 41 aligned in the axial direction, and the center area in the front-rear direction (axial direction) corresponds to the center of gravity G of the electric fan 41. The motor frame 47 is located near the front end and behind the fan cover 48. The center of gravity of the electric blower 41 is substantially the same as the center of gravity of the electric blower 11 in consideration of the weight difference between the electric blower 41 and the motor cover 42. The center of gravity is 11. Further, a plurality of, for example, three spring holding portions 71 as elastic body holding portions for holding one end of each coil spring 43 are formed on the outer peripheral side of the inner peripheral spring support 51.

Each of the spring holding portions 71 is a cylindrical holding cylindrical portion 71a in which one end of the coil spring 43 is fitted on the inner peripheral side, and protrudes in the radial direction inside the holding cylindrical portion 71a and inserted into the coil spring 43. A protrusion holding portion 71b for holding the coil spring 43 is provided, and is spaced apart from each other by substantially equal angles in the circumferential direction of the inner peripheral side spring support 51, that is, 120 ° in this embodiment.

On the other hand, the outer peripheral side spring support 52 is formed in a shape along the inner periphery of the motor cover 42 by, for example, synthetic resin or metal, for example, an annular shape having a diameter larger than that of the inner peripheral side spring support 51. It is arranged concentrically with the side spring support 51 and is located on the motor cover 42 side. Therefore, the outer peripheral spring support 52 also has a center region in the front-rear direction (axial direction) corresponding to the center of gravity G. Further, on the inner peripheral side of the outer peripheral side spring support body 52, as an elastic body holding part that holds the other end of each coil spring 43 corresponding to each spring holding part 71 of the inner peripheral side spring support body 51. Spring holding portions 73 are formed respectively.

Each of the spring holding portions 73 has a cylindrical holding cylindrical portion 73a in which one end of the coil spring 43 is fitted on the inner peripheral side, and protrudes radially inside the holding cylindrical portion 73a and is inserted into the coil spring 43. And a protrusion holding portion 73b for holding the coil spring 43.

Therefore, the coil springs 43 are radially attached to the electric blower 41 between the spring supports 51 and 52, and are spaced apart from each other at substantially equal angles. That is, each coil spring 43 has one end on the electric blower 41 side held by each spring holding portion 71 of the inner peripheral spring support 51 toward the center of gravity G, and the other end supported by the outer peripheral spring. It is held by each spring holding portion 73 of the body 52. For this reason, the coil spring 43 is disposed in an inverted Y shape with respect to the electric blower 41 in a state where the electric blower 11 is viewed from the axial direction. The spring supports 51 and 52 are integrally connected by a coil spring 43 to form a support unit 74.

On the other hand, the motor cover 42 includes a front motor cover 75 as a substantially cylindrical first motor cover and a rear motor cover 76 as a substantially cylindrical second motor cover connected to the rear part of the front motor cover 75. And have. That is, the motor cover 42 is formed so that it can be assembled and disassembled in the axial direction (thrust direction) of the electric blower unit 11. The motor cover 42 accommodates the electric blower 41 coaxially therein.

The front motor cover 75 is formed of, for example, a synthetic resin and has a substantially disc-shaped front plate 81 serving as a front lid portion, and a front peripheral wall 82 extending rearward from the outer peripheral edge portion of the front plate 81. A round hole-shaped front communication opening 83 that is a communication opening that connects the rear communication hole 37 of the main body case 5 and the intake port 66 of the electric blower 41 is formed in the substantially central portion of the front plate 81. ing. Therefore, the rear end of the front motor cover 75 is opened.

In the lower part of the front peripheral wall 82, for example, a pair of supported portions 85 (only one is shown) supported by the front support rods 44 are formed. This supported portion 85 is a portion into which a pair of front support rods 44 are fitted from below, and is arcuate in a cross-sectional view by a substantially vertical plane along the axial direction of the electric blower portion 11. It is formed in a concave shape and opens downward, and also opens forward by a front continuous portion 86 that continues to the front plate 81 in a horizontal manner.

The front communication opening 83 serves as a seal member for airtightly connecting the rear communication hole 37 communicating with the dust collection chamber 7 of the main body case 5 and the air intake port 66 of the electric blower 41 on the negative pressure side of the electric blower 11. A substantially cylindrical seal ring 88, which is a packing, is attached to the front portion between the rear partition wall 31. The seal ring 88 is formed in a substantially cylindrical shape by a member having elasticity such as rubber or elastomer, for example, and is elastically deformed in the axial direction by vibration in the axial direction of the electric blower unit 11, whereby this vibration is It is a vibration attenuating portion that damps the main body case 5 so as not to be transmitted through the partition wall portion 8.

The seal ring 88 is attached so that the electric blower 11 is stopped and is urged slightly forward, that is, the front portion is slightly pressed against the rear surface of the rear partition wall 31 of the partition wall portion 8. ing. The seal ring 88 may be attached to the rear partition wall 31 side.

On the other hand, the rear motor cover 76 is formed of, for example, a synthetic resin and has a substantially disc-shaped rear plate 91 serving as a rear lid portion, and a rear peripheral wall extending forward from the outer peripheral edge portion of the rear plate 91. 92 and a flange portion 93 extending in a radial direction from the outer peripheral edge portion of the rear peripheral wall 92, and the flange portion 93 is screwed to the rear end of the front peripheral wall 82 of the front motor cover 75, for example, Connected by.

A motor cushion 95 as a cushion member, which is a buffer member, is attached to the rear portion of the rear plate 91. The motor cushion 95 is opposed to the rear portion of the lower case 2 via a predetermined gap, and is flexibly deformed by contacting the lower case 2 when the electric blower portion 11 is moved rearward by vibration. Thus, the impact at the time of contact is absorbed and is difficult to transmit to the lower case 2 side or the electric blower 11 side.

Further, an upper connector 96 as an upper connection portion electrically connected to the electric blower 41 side, for example, a brush portion of the electric blower 41, is attached to the lower portion of the rear peripheral wall 92. Further, at the lower part of the rear peripheral wall 92, there is a rear communication opening 97 that is a communication opening as a discharge opening that communicates the exhaust port 61 of the electric blower 41 and the exhaust hole 12 of the main body case 5 in front of the upper connector 96. An opening is formed downward. Further, on both lower sides of the rear peripheral wall 92, for example, supported portions 98 (only one shown) supported by the respective rear support rods 44 are formed.

The supported portion 98 is a portion into which a pair of rear support rods 44 are fitted from below, and has a circular arc shape in a cross-sectional view by a substantially vertical plane along the axial direction of the electric blower portion 11, and a spherical concave shape in this embodiment. And is open downward as well as rearward by a rear continuous portion 99 that continues horizontally to the rear plate 91 in the forward direction.

Although not shown, the flange portion 93 is provided with screw holes for screwing at a plurality of locations, and by screwing screws (not shown) into these screw holes, the front motor cover 75 and the rear motor cover 76 are mutually connected. It is configured to be fixed.

Each support rod 44 urges the electric blower unit 11 upward to attenuate the vibrations of the electric blower unit 11 in the vertical direction and the front-rear direction, and is extendable as shown in FIG. A coil spring 102 that is an urging member is accommodated inside a plurality of stretchable parts 101 connected to each other and formed into a vertically long bar shape, a front pair and a rear pair are separated in the front-rear direction, and In each pair, they are spaced apart from each other. In other words, the support rod 44 has a pair of front and a pair of rear where the center of gravity G is sandwiched between the front and rear of the electric blower unit 11, in other words, the pair of front is a position ahead of the center of gravity G and a pair of rear. Are disposed at positions behind the center of gravity G, and in each pair, the position where the center of gravity G is sandwiched between the left and right sides of the electric blower unit 11, in other words, the left support rod 44 is positioned on the left side of the center of gravity G, The right support rods 44 are arranged at positions on the right side of the center of gravity G, respectively. These support rods 44, for example, when the left and right pitches are different between the front pair and the rear pair, or when the front and rear pitches and the left and right pitches are different, This is preferable because an error in the mounting direction can be prevented.

Each stretchable part 101 is formed in a substantially cylindrical shape, and is formed so that the diameter dimension gradually increases from the one located on the upper end side to the one located on the lower end side, and the stretchable part 101a located at the uppermost end is The piston portion is a support portion whose upper end portion is closed. The upper end portion of the telescopic portion 101a is a portion that fits to each of the supported

portions

85 and 98 of the motor cover 42, and is arcuate in a cross-sectional view by a substantially vertical plane along the axial direction of the electric blower portion 11. In this form, it is formed in a spherical concave shape.

The coil spring 102 is formed in a long shape, the lower end portion is fixed to the lower case 2, and the upper end portion is connected to the lower end of the expansion / contraction portion 101a. The entire stretchable part 101 excluding 101 is biased upward.

Each support bar 44 is extended to the maximum, in the present embodiment, the coil spring 102 is in a natural length, and the upper end side of the expandable portion 101a is substantially equal to the upper end of the lower case 2 as shown in FIG. It faces the upper side of the lower case 2 in the height position, and is in an intermediate state of the assembling work supporting the electric blower 11 as shown in FIGS. 3 and 4, and as shown in FIG. And the upper case 3 are combined so as to leave the urging force in each of the states after the assembly work in which the electric blower 11 is sandwiched. In other words, the coil spring 102 can be expanded and contracted in the respective states shown in FIGS. 1, 3, and 4. That is, the coil spring 102 is not completely contracted even after the assembly operation shown in FIG.

Here, the upper end side of the expansion / contraction part 101a is a height position substantially equal to the upper end of the lower case 2 means that the upper end side of the expansion / contraction part 101a is a height position equal to the upper end of the lower case 2; It also includes a slightly lower position or an upper position.

Further, a control board 105 that is a control unit for controlling the operation of the electric blower 41 of the electric blower unit 11 is disposed behind the rear support rod 44. The control board 105 is electrically connected to the power supply cord 13 of the cord reel, and can be connected to the power supply side via the power supply cord 13, and is electrically connected to the lower connector 106 as a lower connection portion. The lower connector 106 is electrically and mechanically connected to the electric blower 11 side via the upper connector 96 on the electric blower 11 side. That is, the control board 105 and the lower connector 106 are disposed at a position facing the rear communication opening 97 of the electric blower 11 and in the exhaust air flow path communicating from the rear communication opening 97 to the exhaust hole 12. Has been.

The lower connector 106 is attached to the lower case 2 and is arranged upward, that is, with the tip side being the connection side facing the upper case 3 side.

Each support wheel 45 attenuates the vibration in the vertical direction and the front-rear direction of the electric blower 11 and is formed in a roller shape by an elastic member such as rubber or elastomer, for example, as shown in FIG. The front motor cover 75 of the motor cover 42 is rotatably supported between

shaft support plates

3b, 3b protruding from the upper case lower plate 3a as a shaft support portion formed substantially horizontally at the lower portion of the upper case 3. It is located between the outer peripheral surface of the front peripheral wall 82 and the upper case 3 and is rotatably supported in the front-rear direction, that is, in the axial direction of the electric blower 11. Further, each support wheel 45 is disposed above a side view of the center of gravity G of the electric blower 11 and at a position lateral to the top of the outer peripheral surface on the upper side of the front motor cover 75. Therefore, each support wheel 45 is attached radially to the motor cover 42, and the axial direction is substantially along the tangential direction of the outer peripheral surface of the front motor cover 75. That is, each support wheel 45 is disposed in an inclined manner toward the center of gravity G or the central axis side of the electric blower 11.

Next, a method for manufacturing the vacuum cleaner according to the embodiment will be described.

First, in a state where the support unit 74 in which the spring supports 51 and 52 are connected in advance by the coil spring 43 is attached to the outer periphery of the motor frame 47 of the electric blower 41, the electric blower 41 is attached to each

motor cover

75 and 76 from the front and rear. Covered and incorporated in the motor cover 42 to form the electric blower 11.

Next, as shown in FIGS. 2 and 3, the electric blower 11 is placed from above the lower case 2 in which each component is incorporated so that the support rods 44 are fitted to the supported

portions

85 and 98. Then, the upper ends of the telescopic portions 101a of the support rods 44 are fitted into the supported

portions

85 and 98, and the coil springs 102 are compressed by a predetermined amount due to the weight of the electric blower 11, and the electric blower 11 is lowered. The upper connector 96 faces the upper portion of the lower connector 106 by sinking to the case 2 side.

In addition, when the upper end portion of the expansion / contraction portion 101a of each support rod 44 is not correctly fitted to each supported

portion

85, 98, each support rod 44 escapes outward from the electric blower portion 11. By bending or bending to the center side of each support rod 44, the electric blower unit 11 is not properly fixed or floats, so that the electric blower unit 11 is not correctly assembled. Can be easily confirmed.

Further, with the support rods 44 correctly fitted to the supported

parts

85 and 98 as described above, as shown in FIG. By covering the upper part of the lower case 2, each support wheel 45 is brought into contact with the upper part of the electric blower 11, and the upper case 3 and the lower case 2 are assembled with screws or the like from this state as shown in FIG. Thus, each support wheel 45 pushes the electric blower portion 11 downward against the bias of each coil spring 102, and the upper case 3 is pressed against the upper end portion of the partition wall portion 8 via the packing, The dust collection chamber 7 and the air blowing chamber 6 are partitioned and the electric air blowing portion 11 is accommodated in the air blowing chamber 6 while being elastically sandwiched from above and below, and the front communication opening 83 of the electric air blowing portion 11 is formed. The rear communication hole 37 communicates with the seal ring 88.

At the same time, the upper connector 96 is pushed into the lower connector 106 by pushing in the electric blower 11, and these

connectors

96, 106 are electrically and mechanically connected.

Next, the operation of the above embodiment will be described.

When cleaning, first, the hose body 22, the extension pipe 28 and the floor brush 29 are sequentially connected to the main body suction port 21, and the cover 4 of the main body case 5 is opened to attach the paper pack to the dust collection chamber 7. Then, the lid 4 is closed.

In the state before starting the cleaning, the electric blower 11 is in a predetermined start position in the axial direction (front-rear direction) due to the balance of the urging forces of the support rod 44 and the support wheel 45.

Then, the power cord 13 is pulled out from the main body case 5 and connected to an outlet such as a wall surface. When the operator grips the grip portion 25 and operates a predetermined setting button 26, the electric blower 41 of the electric blower portion 11 is driven. .

The electric blower 11 tries to vibrate in the longitudinal direction of the axial direction due to the drive of the electric blower 41 and the negative pressure generated by this drive.

At this time, the expansion / contraction part 101a contracted against the urging force of each coil spring 102 by fitting the expansion / contraction part 101a of each support rod 44 to each supported

part

85, 98 of the electric blower part 11. Although a force is applied in the direction of being pushed into the telescopic part 101, the electric air blowing part 11 is urged forward or rearward so as to be balanced by the urging of each coil spring 102 or the urging and rotation of the support wheel 45, The electric blower 11 is biased upward or downward, that is, the electric blower 11 is aligned by the support rod 44 and the support wheel 45 and absorbs vibrations in the axial direction (front-rear direction) and the vertical direction accompanying the drive of the electric blower 11. Is done.

Furthermore, the drive of the electric blower 41 tends to generate vibration in the radial direction (center axis direction) intersecting the rotation direction of the electric blower 41 inside the electric blower 11.

At this time, the coil springs 43 biased in the direction of the center of gravity G of the electric blower 41 are appropriately expanded and contracted to align the electric blower 41, whereby the radial direction (center axis direction) associated with the driving of the electric blower 41 is increased. ) Is also absorbed.

Then, the negative pressure generated by driving the electric blower 41 forms a floor brush 29, the extension pipe 28, the hose body 22, the main body suction port 21, and the air path that acts on the paper pack, and dust is sucked together with the air.

The sucked air becomes intake air, and dust contained in the intake air is collected in the paper pack when the air passes through the paper pack. The dust contained in the paper pack is compressed by the passing intake air.

Further, the intake air that has passed through the paper pack passes through the filter, the front communication hole, the duct, and the rear communication hole 37, and flows into the fan cover 48 of the electric blower 41 through the intake port 66 of the electric blower 41. Then, the air is sucked from the central portion of the centrifugal fan 57 and exhausted in the circumferential direction, passes through the motor frame 47, and is exhausted from each exhaust port 61 to the outside of the electric blower 41 as exhaust air.

The exhaust air is exhausted downward through the rear communication opening 97 of the motor cover 42 to cool the control board 105 and the

connectors

96 and 106, and then partly flows upward from the periphery of the electric blower unit 11. The exhaust air is exhausted from the exhaust hole 12 of the main body case 5 to the outside of the main body case 5, and the remainder flows into the cord reel chamber from the communication port of the partition wall portion 8 to cool the cord reel (power cord 13). The air is exhausted to the outside of the main body case 5 through the outlet.

When cleaning is completed, the operator operates the setting button 26 to stop the electric blower 41 and stop the operation of the vacuum cleaner.

At this time, the electric blower 11 returns to a predetermined start position by the alignment action of the support rods 44 and the support wheels 45.

When a predetermined amount or more of dust has accumulated in the paper pack, the lid 4 is opened, the paper pack is removed from the dust collection chamber 7 and discarded together with the dust, and a new paper pack is installed in the dust collection chamber 7.

As described above, according to the above-described embodiment, the electric blower unit 11 is placed on the support rod 44 formed to protrude upward from the lower case 2, and the upper case 3 is covered with the lower case 2. By attaching the electric blower 11 to the support rod 44 by the

support wheels

45, 45, the electric blower 11 is positioned when the electric blower 11 is incorporated into the blower chamber 6 of the main body case 5. The electric blower 11 can be easily assembled in the blower chamber 6 without the need for matching, or assembling various seal members, buffer members, and the like to the lower case 2, and the productivity is improved.

Further, the upper connector 96 electrically connected to the control board 105 can be connected to the lower connector 106 on the lower case 2 side, which can be electrically connected to the power source side, by simply mounting the upper case 3 on the lower case 2. Therefore, the wiring work for connecting the power supply side and the electric blower 11 side is not required separately, and the productivity is further improved.

In particular, since it is not necessary to provide a space for wiring work in the blower chamber 6 for connecting the power supply side and the electric blower 11 side, the main body case 5 can be further downsized.

Furthermore, by providing

support wheels

45 and 45 which are rotating bodies that can rotate along the axial direction of the electric blower 11 as support members, vibrations in the axial direction of the electric blower 11 are supported by the

support wheels

45 and 45. By rotating, it can be absorbed more reliably.

Then, by arranging three or more support rods 44 in the air blowing chamber 6 in the shape of a rod, the electric blower portion 11 can be stably supported by the support rod 44 when the electric blower portion 11 is placed on the support rod 44. Is possible.

Moreover, since the front end of the support rod 44 faces the upper end of the lower case 2 and protrudes to a height position substantially equal to the upper end in a state before the electric blower 11 is assembled, the electric blower 11 is connected to the lower case. 2 can be easily placed on the support rod 44 without being brought into contact with a structure or the like in 2, and the workability of incorporating the electric blower 11 is further improved.

In addition, each support rod 44 can be expanded and contracted while the electric blower 11 is sandwiched between the

support wheels

45 and 45, so that after the electric blower 11 is incorporated into the blower chamber 6, each support rod 44 is provided. Can function as a vibration absorber that absorbs various vibrations associated with the driving of the electric blower 11.

In other words, the electric blower 11 is elastically supported from the front and rear of the center of gravity G by the support rods 44, so that vibration associated with driving of the electric blower 11, particularly axial vibration and electric blower when the electric blower 41 is activated. The vibration in the suction direction due to the negative pressure generated by the driving of the portion 11 can be reliably absorbed by the bias of the coil spring 102 of each support rod 44, and the vibration isolation to the main body case 5 can be achieved.

Further, the distal end side of the expansion / contraction part 101a at the upper end of each support rod 44 has a circular arc cross section, and the supported

parts

85 and 98 of the motor cover 42 of the electric blower part 11 to which the distal end part of the expansion / contraction part 101a is fitted are circular in cross section. By forming it in an arc shape, not only vibration along the axial direction of the electric blower unit 11, but also vibration including an axial component of the electric blower unit 11, for example, vibration of the electric blower unit 11 in a diagonally downward direction, etc. However, it can be reliably received by each support rod 44 and can absorb the vibration in the axial direction with certainty.

The support rods 44 are also arranged in the width direction intersecting the axial direction of the electric blower unit 11, so that vibrations in the width direction associated with the drive of the electric blower unit 11 are also supported by the support rods 44. Can be absorbed by.

Further, in the electric blower unit 11, since the electric blower 41 is held radially by the plurality of coil springs 43 in the direction of the center of gravity G inside the motor cover 42, the rotational vibration at the time of driving the electric blower 41 is It can be absorbed by the expansion and contraction of each coil spring 43 and difficult to be transmitted to the motor cover.

In addition, since these coil springs 43 are positions corresponding to the center of gravity G of the electric blower 41 in a side view, for example, compared with the case where the position near the front end or the position near the rear end of the electric blower 41 is supported. When the blower 41 is driven, vibration generated in the vertical direction on the front side or the rear side of the center of gravity G can be minimized, and the vibration can be more difficult to be transmitted to the main body case 5.

Furthermore, by making the configuration so as not to transmit each vibration to the main body case 5 as described above, it is possible to prevent the generation of sound due to the vibration of the electric blower 11 during operation of the vacuum cleaner, and particularly the vibration is reflected. Even when cleaning on an easy wooden floor or the like, the operation sound is quiet, and the electric blower 41 with relatively large vibration can be adopted, and the quality is stabilized.

In the above embodiment, the electric blower 11 is not limited to the electric blower 41 and the motor cover 42, but may be, for example, the electric blower 41 itself. That is, the configuration in which the electric blower 41 itself is elastically supported by the support rod 44 is also included in the embodiment.

Further, if at least three support rods 44 are disposed at positions where the electric blower 11 can be supported, for example, one on the front side and two on the rear side, the same operational effects can be obtained.

Furthermore, instead of the support wheels 45, the upper case 3 may be provided with at least one arbitrary member such as an elastic body as a support member.

Further, the upper case 3 may not necessarily constitute the upper part of the main body case 5 as long as it is attached to the lower case 2 so as to face at least a part of the upper side of the lower case 2. It also includes a middle case that constitutes the main body case 5.

And the details of the vacuum cleaner are not limited to the above configuration, and can be used in correspondence with, for example, an upright type or a handy type vacuum cleaner.

The present invention is suitably used for, for example, a household vacuum cleaner and a manufacturing method thereof.

Claims

A main body case provided with a lower case and an upper case that is attached to the lower case so as to face at least a part of the upper portion of the lower case and divides a storage chamber between the lower case;
An electric blower having an axial direction and housed in the housing chamber;
A telescopic biasing member that protrudes from the lower case side to the upper case side and supports the lower part of the electric blower at least upwardly, and
A vacuum cleaner, comprising: a support member provided on the upper case side and sandwiching the electric blower portion with the biasing member.
The electric blower
An electric blower,
A cover body covering at least a part of the electric blower;
The vacuum cleaner according to claim 1, further comprising a blower support member disposed inside the cover body and supporting the electric blower with respect to the cover body.
The vacuum cleaner according to claim 1 or 2, wherein the support member is a rotating body that is rotatable along the axial direction of the electric blower.
The vacuum cleaner according to any one of claims 1 to 3, wherein the urging member is formed in a rod shape and three or more urging members are arranged.
The urging member can be expanded and contracted in a state where the electric blower is sandwiched between the supporting member and the electric blower. The electric vacuum cleaner according to any one of claims 1 to 4.
The biasing member has a circular arc shape in cross section at the tip side,
The electric vacuum cleaner according to any one of claims 1 to 5, wherein the electric blower includes a supported portion that is arcuate in cross-section and to which a front end side of the biasing member is fitted.
A control unit for controlling the electric blower unit;
An upper connection part electrically connected to the control part and attached to the electric blower part downward,
A lower connection portion attached to the lower case side facing upward, electrically connectable to a power supply side, and connected to the upper connection portion at least in a state where the upper case is attached to the lower case; The vacuum cleaner according to claim 1, wherein the vacuum cleaner is provided.
A main body case including a lower case and an upper case that is attached to the lower case so as to face at least a part of an upper portion of the lower case and partitions a storage chamber between the lower case and an axial direction An electric blower comprising: an electric blower housed in the housing chamber; an urging member that protrudes from the lower case side to the upper case side and can be expanded and contracted; and a support member provided on the upper case side A manufacturing method of
Placing the electric blower on the biasing member;
The method for manufacturing a vacuum cleaner, wherein the electric blower is sandwiched between the urging member and the urging member by attaching the upper case to the lower case.
When the upper case is attached to the lower case, the upper connection part that is electrically connected to the control unit that controls the electric blower unit and is attached to the electric blower unit downward is directed upward to the lower case side. 9. The method of manufacturing a vacuum cleaner according to claim 8, wherein the vacuum cleaner is connected to a lower connection portion that is attached and can be electrically connected to the power supply side.