JP2009207553A - Electric vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric vacuum cleaner capable of effectively suppressing the axial run-out of an electric blowing part. <P>SOLUTION: The electric blowing part 11 is supported with respect to a body case 5 by plate springs 45, 45 of plate spring groups 46a, 46b arranged at positions different from each other in an axial direction. The respective plate springs 45 of the plate spring groups 46a, 46b are arranged so as to shift from each other in a circumferential direction of the electric blowing part 11. Deformation of each plate spring 45 allows vibration at positions different from each other in the axial direction with driving of the electric blowing part 11 to be suppressed, and the axial run-out of the electric blowing part 11 to be effectively suppressed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vacuum cleaner that elastically supports an electric blower by an elastic member.

Conventionally, this type of vacuum cleaner is a cleaning in which an electric blower having a centrifugal fan that is a fan and an electric motor that rotates the centrifugal fan is housed in a blower chamber that is a housing chamber partitioned inside the main body case. It has a machine body. And the electric blower is held so that the outer peripheral surface on the electric motor side is sandwiched from the upper side and the lower side by a pair of leaf springs arranged opposite to each other in order to make it difficult to transmit the vibration to the main body case, It is elastically supported with respect to the main body case (for example, refer to Patent Document 1).
Japanese Unexamined Patent Publication No. 4-193143 (page 3, FIGS. 1 and 2)

  In the above-described electric vacuum cleaner, vibrations in the radial direction (up and down, left and right directions) among vibrations associated with driving the electric blower are elastically supported by the leaf springs.

  However, on the motor side and on the centrifugal fan side rotated by this motor, the centrifugal fan side vibrates closer to the motor side, so that the rotation axis is shaken, that is, the runout occurs. Has the problem that it cannot be sufficiently absorbed by the above configuration.

  This invention is made | formed in view of such a point, and it aims at providing the vacuum cleaner which can suppress the runout of an electric blower part effectively.

  The present invention provides a plurality of elastic member groups each including a pair of elastic members formed along at least a part of the outer periphery of the electric blower and supporting the electric blower with respect to the main body case at positions facing each other. However, the respective elastic members are arranged at substantially different intervals in the circumferential direction of the electric blower at different positions in the axial direction of the electric blower.

  According to the present invention, the plurality of elastic member groups that support the electric blower with respect to the main body case are at positions different from each other in the axial direction of the electric blower, and each elastic member is in the circumferential direction of the electric blower. By arrange | positioning so that it may become substantially equal intervals, the vibration in the position from which an axial direction differs can be suppressed, and the runout of an electric blower part can be suppressed effectively.

  Hereinafter, the structure of the vacuum cleaner of the 1st Embodiment of this invention is demonstrated with reference to FIG. 1 thru | or FIG.

  1 to 5, 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 traveling 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 (not shown) is defined between the lower case 2 and the lid 4. A partition wall 8 is provided between the air blowing chamber 6 and the dust collecting chamber 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 in a substantially horizontal shape so that the direction is 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 portion of the lower case 2.

  On the other hand, a dust collecting section such as a paper pack or a cyclone dust collecting device can be attached to and detached from the dust collecting chamber. Further, a main body suction port 21 is formed in the lower case 2 at the front portion of the dust collection chamber. 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 side, and the air blowing chamber 6 continuous to the front partition wall. And a side partition 33 that partitions 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. Further, a filter (not shown) is disposed on the dust collection chamber side that is the front portion of the front communication hole.

  The side partition wall 33 is formed with a communication port (not shown) that connects 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 33 is a sealing member that is sandwiched between the upper case 3 and hermetically divides the air blowing chamber 6, the dust collecting chamber, and the cord reel chamber. A packing (not shown) is attached.

  As shown in FIG. 1 to FIG. 3, the electric blower 11 is a heavy-weight fan motor, that is, an electric blower 41, and a relatively lightweight cover body that covers and holds at least a part of the electric blower 41. An internal support unit having a substantially cylindrical motor cover 42 as a member, and a plurality of, for example, three coil springs 43, which elastically support the electric blower 41 with respect to the motor cover 42 and attenuate the rotational vibration of the electric blower 41. A plurality of, for example, two external support units (a first external support unit and a second external support unit) having leaf springs 45, 45 as a pair of elastic members. The plate spring group 46 is elastically supported with respect to the main body case 5.

  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 coil spring receiving portions forming the coil spring group 44, are attached, A coil spring 43 is held between the spring supports 51 and 52, 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 which 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 evacuating, negative pressure can be applied to the duct, dust collection chamber, hose body 22 (FIG. 5), extension pipe 28 (FIG. 5), floor brush 29 (FIG. 5), 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. The position corresponding to the center of gravity G is hereinafter referred to as a position including the center of gravity G and intersecting a plane perpendicular to the axial direction of the electric blower 11 (electric blower 41), or the electric blower 11 with respect to the intersecting position. The position in the vicinity of the front and rear of the (electric blower 41) in the axial direction is assumed. Furthermore, a plurality of, for example, three, inner peripheral spring holding portions 71 as inner peripheral coil spring holding portions that hold one end of each coil spring 43 are formed on the outer peripheral side of the inner peripheral spring support 51. Yes.

  Each of the inner peripheral spring holding portions 71 includes a cylindrical inner peripheral holding cylindrical portion 71a in which one end of the coil spring 43 is fitted on the inner peripheral side, and the inner peripheral spring holding portion 71a projects in the radial direction inside the coil. An inner circumferential protrusion holding portion 71b inserted into the spring 43 to hold the coil spring 43, and at a substantially equal angle to each other in the circumferential direction of the inner circumferential spring support 51, that is, 120 ° in this embodiment. It is separated. Further, one of the inner peripheral spring holding portions 71 is located at the lower part of the electric blower 41, and the remaining two are located at both sides of the upper part.

  The state in which the inner peripheral spring holding portions 71 are shifted from each other by 120 ° in the circumferential direction includes the state in which the inner peripheral spring holding portions 71 are shifted from each other by 120 ° in the circumferential direction.

  Similarly, hereinafter, the numerical values defining the angles of the respective parts include not only the numerical values but also the numerical values before and after the numerical values.

  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. In other words, the outer peripheral spring support 52 is disposed at a position where at least a part intersects a plane that includes the center of gravity G and is orthogonal to the axial direction of the electric blower 11 (electric blower 41). Further, on the inner peripheral side of the outer peripheral side spring support 52, an outer peripheral coil spring holding that holds the other end of each coil spring 43 corresponding to each inner peripheral spring holding part 71 of the inner peripheral side spring support 51. Peripheral spring holding portions 73 are formed as portions.

  The outer peripheral spring holding portion 73 is a cylindrical outer peripheral holding cylindrical portion 73a in which one end of the coil spring 43 is fitted to the inner peripheral side, and projects radially in the outer peripheral holding cylindrical portion 73a and inserted into the coil spring 43. And an outer peripheral protrusion holding portion 73b for holding the coil spring 43. Further, one of the outer peripheral spring holding portions 73 is located at the lower part of the electric blower 41, and the remaining two are located at both sides of the upper part.

  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 intervals (substantially equal angles). That is, each coil spring 43 has one end portion on the electric blower 41 side held by each inner peripheral spring holding portion 71 of the inner peripheral spring support 51 toward the center of gravity G side or the central axis side, and the other end portion. Is held by each outer peripheral spring holding portion 73 of the outer peripheral spring support 52. For this reason, the coil spring group 44 is attached at a position corresponding to the center of gravity G of the electric blower unit 11 (electric blower 41), that is, attached so that the center of gravity G is located inside the outer shell of the coil spring group 44, The coil spring 43 is arranged in a Y shape with respect to the electric blower 41 that is shifted from each other by 120 ° in the circumferential direction when the electric blower unit 11 is viewed from the axial direction. In other words, the coil spring group 44 is arranged at a position where at least a part intersects a plane including the center of gravity G and orthogonal to the axial direction of the electric blower 11 (electric blower 41).

  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.

  The front communication opening 83 has a packing as a seal member that hermetically connects the rear communication hole 37 communicating with the dust collection chamber of the main body case 5 and the intake port 66 of the electric blower 41 on the negative pressure side of the electric blower 11. The substantially cylindrical seal ring 88 is attached to the front part between the rear partition wall 31 and the rear seal 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.

  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 that 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.

  In the rear peripheral wall 92, a rear communication opening 97 that exhausts the exhaust air that has passed through the electric blower 41 to the outside of the motor cover 42 is formed in the lower portion.

  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 leaf spring 45 includes a curved portion 45a that is curved in an arc shape, continuous portions 45b and 45b that are continuous to both ends of the curved portion 45a, and support portions 45c and 45c that are continuous to the continuous portions 45b and 45b, respectively. It is formed by appropriately bending a predetermined metal member.

  The curved portion 45a is formed in a shape along a part of the outer periphery of the motor cover 42 (the front motor cover 75 and the rear motor cover 76) that is the outer periphery of the electric blower unit 11.

  Each continuous portion 45b protrudes from the end portion of the bending portion 45a in a substantially linear shape on the same side as the protruding side of the bending portion 45a.

  Each support portion 45c is linearly bent toward the curved portion 45a side with respect to each continuous portion 45b, and extends in a direction substantially orthogonal to each continuous portion 45b.

  Each curved portion 45a is held between the blower side ribs 98 and 98 protruding on the outer periphery of the motor cover 42 (the front motor cover 75 and the rear motor cover 76), and each continuous portion 45b and each support portion 45c are The leaf springs 45 are restrained from moving in the front-rear direction by being held between the body-side ribs 99 projecting from the inner wall of the blower chamber 6 of the body case 5.

  Further, the leaf spring group 46 is located on the centrifugal fan 57 side, one on the front side of the center of gravity G, that is, on the outer periphery of the front motor cover 75 of the motor cover 42 (hereinafter referred to as the leaf spring group 46a), and the other is located The motor 55 side that is the rear side of G, that is, the outer periphery of the rear motor cover 76 of the motor cover 42 (hereinafter referred to as a leaf spring group 46b). In other words, the leaf spring groups 46a and 46b are displaced from each other with respect to the axial direction of the electric blower 11 (electric blower 41), and in the present embodiment, the positions sandwiching the center of gravity G, that is, the center of gravity G. The coil spring group 44 is disposed at a position sandwiching the coil spring group 44 on the front side that is one of the axial directions and the rear side that is the other side in the axial direction. That is, the leaf spring groups 46a and 46b are arranged at positions where the center in the front-rear direction or the vicinity thereof does not intersect the plane that includes the center of gravity G and is orthogonal to the axial direction of the electric blower 11 (electric blower 41). Further, the leaf spring groups 46a and 46b are arranged at substantially equal distances with respect to the center of gravity G. In other words, the leaf spring groups 46 a and 46 b are arranged at substantially equal distances with respect to the coil spring group 44.

  Further, the leaf spring groups 46a and 46b are arranged at a predetermined angle, for example, 90 ° different from each other with respect to the circumferential direction of the electric blower unit 11. That is, as shown in FIG. 2, the leaf spring group 46a is arranged so that, for example, the leaf springs 45, 45 are vertically opposed to each other, and the leaf spring group 46b is, for example, a leaf spring as shown in FIG. 45 and 45 are arrange | positioned so that it may become a position facing left and right seeing from an axial direction. For this reason, the leaf spring groups 46a and 46b are arranged such that the leaf springs 45 are equally spaced in the circumferential direction of the electric blower unit 11.

  The leaf springs 45 of the leaf spring groups 46a and 46b may all be made of the same material, or may be arbitrarily made of different materials.

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

  First, in the state where the coil spring group 44 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 moved back and forth by the motor covers 75 and 76. And is assembled into the motor cover 42 to form the electric blower unit 11.

  Next, the curved portion 45a is held between the air blowing portion side ribs 98, 98 outside the electric air blowing portion 11, and each leaf spring 45 is attached to the outer periphery of the electric air blowing portion 11, and the electric air blowing portion 11 and the leaf spring group 46a. , 46b are fitted in the blower chamber 6 so as to hold the continuous portion 45b and the support portion 45c of each leaf spring 45 between the main body side ribs 99, 99, and the electric blower 11 side and the main body case 5 side. Connect the wiring.

  In this state, the upper case 3 in which each part is connected to the built-in lid 4 is placed on the upper part of the lower case 2 from the upper side, and the upper case 3 and the lower case 2 are assembled with screws or the like, whereby the cleaner body 1 Is completed.

  Next, the operation of the first 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 dust collecting part to the dust collecting chamber. Then, the lid 4 is closed.

  In a state before the cleaning is started, the electric blower 11 is in a predetermined start position by balancing the urging forces of the leaf springs 45 of the leaf spring group 46.

  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. .

  Due to the driving of the electric blower 41 and the negative pressure generated by this drive, vibrations tend to occur in the radial direction (center axis direction) intersecting the rotation direction of the electric blower 41 inside the electric blower 11.

  At this time, each coil spring 43 urged in the direction of the center of gravity G (the center of gravity G side) of the electric blower 41 expands and contracts appropriately to align the electric blower 41, whereby the diameter associated with the driving of the electric blower 41 The vibration in the direction (center axis direction) is also absorbed by the coil spring group 44.

  In addition, due to the vibration of the electric blower 41, the electric blower unit 11 tends to vibrate in the longitudinal direction and the radial direction (up and down, left and right directions) in the axial direction.

  In particular, the centrifugal fan 57 side of the electric blower 41 vibrates more greatly than the electric motor 55 side.

  At this time, as shown in FIG. 4, the curved portions 45 a of the leaf springs 45 are pressed in the radial direction by the electric blower portion 11, so that both ends of the curved portion 45 a are deformed, and accompanying this deformation When the continuous portions 45b and 45b are deformed in an inclined shape, the vibration of the electric blower 11 is absorbed by the deformation of each leaf spring 45. In FIG. 4, the deformation of the curved portion 45a and the continuous portions 45b and 45b is exaggerated for convenience.

  As a result, the electric blower 11 is urged in the vertical direction or the horizontal direction shown in FIGS. 2 and 3 so as to be balanced by the urging of the leaf springs 45 of the leaf spring groups 46a and 46b, The front side (centrifugal fan 57 side) and the rear side (motor 55 side) of the electric blower unit 11 are held by the leaf spring groups 46a and 46b, respectively. The vibration in the left-right direction is absorbed.

  Note that vibration in the front-rear direction of the electric blower 11 is regulated by the rigidity in the width direction of each leaf spring 45 and hardly occurs.

  Then, due to the negative pressure generated by driving the electric blower 41, an air path is formed which acts on the floor brush 29, the extension pipe 28, the hose body 22, the main body suction port 21, and the dust collecting portion, and dust is sucked together with air.

  The sucked air becomes intake air, and dust contained in the intake air is collected by the dust collecting part when the air passes through the dust collecting part.

  Further, the intake air that has passed through the dust collecting portion 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, and then partly flows upward from the periphery of the electric blower 11, and the main body case 5 from the exhaust hole 12 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), and to the outside of the main body case 5 through the cord outlet. Exhausted.

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

  At this time, the electric blower 11 returns to a predetermined start position by the alignment operation of the leaf spring groups 46a and 46b.

  When dust of a predetermined amount or more accumulates in the dust collecting part, the lid 4 is opened and the dust collecting part is removed from the dust collecting chamber. When the dust collection unit is a paper pack, the paper pack is discarded together with dust, and a new paper pack is mounted in the dust collection chamber. If the dust collection part is a dust collection cup or the like, discard the dust and attach it to the dust collection chamber again.

  As described above, according to the first embodiment, the electric blower 11 is attached to the main body case 5 by the leaf springs 45, 45 of the leaf spring groups 46a, 46b arranged at different positions in the axial direction. The leaf springs 45a and 46b of the leaf spring group 46b and the leaf spring group 46b are arranged so as to be shifted from each other with respect to the circumferential direction of the electric blower unit 11, so that the electric fan It is possible to suppress vibrations at different positions in the axial direction due to driving of the portion 11 (electric blower 41), to effectively suppress runout of the electric blower portion 11, and to insulate the main body case 5 from vibration.

  In particular, in the electric blower unit 11, since the electric blower 41 is configured to rotate the centrifugal fan 57 by the electric motor 55, the electric fan 41 swings around the front side and the rear side across the center of gravity G, that is, a runout occurs. To do. For this reason, the leaf spring groups 46a and 46b are arranged at angles different from each other by 90 ° in the circumferential direction of the electric blower unit 11 at a position sandwiching the center of gravity G of the electric blower unit 11, that is, on the front side and the rear side. By elastically supporting the electric blower unit 11 by the leaf spring groups 46a and 46b, the swing of the electric blower unit 11 can be reliably suppressed, and the runout can be effectively suppressed.

  In addition, the deformation of each leaf spring 45 of one leaf spring group 46a absorbs the vibration in the vertical direction of the electric blower unit 11 due to the driving of the electric blower 41, and the vibration in the left and right direction of the electric blower unit 11 The position of the other leaf spring group 46b can be covered by the deformation of the leaf springs 45 of the other leaf spring group 46b, and the position of the other leaf spring group that can hardly absorb vibration can be covered by the other leaf spring group. It can be reliably suppressed.

  Furthermore, by arranging the three coil springs 43 of the coil spring group 44 to be shifted from each other by 120 ° with respect to the circumferential direction, the vibration associated with the driving of the electric blower 41 can be effectively absorbed by the coil spring group 44, Since it is difficult to transmit to the motor cover 42, vibration can be absorbed more reliably by a synergistic effect with the leaf spring group 46.

  In addition, by arranging the coil spring group 44 at a position corresponding to the center of gravity G, vibration generated in the vertical direction on the front side or the rear side of the center of gravity G when driving the electric blower 41 can be minimized. Can be more difficult to convey to the motor cover 42.

  And it can prevent generation | occurrence | production of the sound resulting from the vibration of the electric blower part 11 at the time of driving | operation of a vacuum cleaner by comprising so that each vibration may not be transmitted to the main body case 5 as mentioned above, especially a vibration echoes. 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 first embodiment, the leaf spring groups 46a and 46b may have their arrangements reversed. That is, the electric blower unit 11 is sandwiched from both the left and right sides when viewed from the axial direction by the leaf springs 45, 45 of the leaf spring group 46a, and the electric blower unit 11 is sandwiched from above and below by the leaf springs 45, 45 of the leaf spring group 46b. You may comprise as follows. Also in this case, the same operational effects as those of the first embodiment can be obtained.

  Further, if the leaf spring groups 46a and 46b are disposed at positions sandwiching the center of gravity G of the electric blower unit 11 at angles different from each other by 90 ° with respect to the main direction of the electric blower unit 11, the upper and lower portions of the electric blower unit 11 or It does not have to be the left and right sides as seen from the axial direction.

  Next, a second embodiment will be described with reference to FIGS. In addition, about the structure and effect | action similar to the said 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  This second embodiment is provided with three leaf spring groups 46a, 46b, 46c in the first embodiment.

  The leaf spring group 46 a is disposed at a position corresponding to the center of gravity G of the electric blower 11. That is, the leaf spring group 46a is arranged at a position where at least a part intersects a plane including the center of gravity G and orthogonal to the axial direction of the electric blower 11 (electric blower 41).

  The leaf spring groups 46b and 46c are arranged with the leaf spring group 46a interposed therebetween. That is, the leaf spring groups 46b and 46c are located on one end side and the other end side in the axial direction with respect to the center of gravity G of the electric blower unit 11, respectively.

  Specifically, the leaf spring group 46b is attached to the outer periphery of the front motor cover 75, which is the front side of the electric blower unit 11. That is, the leaf spring group 46b is located on the centrifugal fan 57 side of the electric blower 41.

  The leaf spring group 46c is attached to the outer periphery behind the leaf spring group 46a of the rear motor cover 76 on the rear side of the electric blower unit 11. That is, the leaf spring group 46c is located on the electric motor 55 side of the electric blower 41.

  Further, the leaf spring groups 46a, 46b, 46c are arranged at an angle different from each other by 60 ° with respect to the circumferential direction of the electric blower unit 11.

  Specifically, in the leaf spring group 46a, the leaf springs 45, 45 are positioned vertically as shown in FIG. 7, and in the leaf spring group 46b, the leaf springs 45, 45 are shown in FIG. In the leaf spring group 46c, the leaf springs 45, 45 are located in the upper left and lower right in the drawing, as shown in FIG.

  Accordingly, the leaf springs 45, 45 of the leaf spring group 46a, the leaf springs 45, 45 of the leaf spring group 46b, and the leaf springs 45, 45 of the leaf spring group 46c are each set at a predetermined angle in the circumferential direction of the electric blower unit 11. For example, they are sequentially arranged at equal intervals every 60 °. Further, in each leaf spring 45 of the leaf spring groups 46a to 46c, the curved portion 45a is held between the blower side ribs 98 and 98. Further, each leaf spring 45 of the leaf spring groups 46b and 46c is bent from the curved portion 45a so that the continuous portion 45b is along the side surface of the blower chamber 6, and the support portion 45c is along the bottom surface or the top surface of the blower chamber 6. It is bent from the continuous portion 45b and held between the main body side ribs 99 and 99, respectively.

  The plurality of leaf spring groups 46 that elastically support the electric blower unit 11 with respect to the main body case 5 are arranged so as to be shifted with respect to the circumferential direction of the electric blower unit 11, and the like. By having the same configuration, the same effects as those of the first embodiment can be obtained.

  In addition, the leaf spring groups 46a, 46b, 46c are arranged at angles different from each other by 60 ° with respect to the circumferential direction of the electric blower unit 11, and the leaf spring group 46a is arranged at a position corresponding to the center of gravity G of the electric blower unit 11. In addition, by arranging the leaf spring groups 46b and 46c before and after the leaf spring group 46a, the swing of the electric blower unit 11 can be more reliably suppressed, and the runout can be effectively suppressed.

  In each of the above embodiments, 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 each leaf spring group 46 is also included in the embodiment.

  Further, in the electric blower unit 11, the electric blower 41 may be supported with respect to the motor cover 42 by an arbitrary configuration as long as the electric blower 41 can suppress the runout.

  Further, the leaf spring group 46 may be provided in an arbitrary number of two or more. For example, when there are three or more odd number of leaf spring groups 46, one is a position corresponding to the center of gravity G, the rest is arranged in a balanced manner in the front and rear, and two or more even number of leaf spring groups 46 are provided. In other words, the leaf springs 45 of the leaf spring groups 46 may be arranged at substantially equal intervals in the circumferential direction of the electric blower unit 11 in a balanced manner at positions sandwiching the center of gravity G.

  Each leaf spring 45 may be formed, for example, by forming a long hole or the like in the support portion 45c and attaching it to the main body case 5 or the motor cover 42 with a screw or the like through the long hole.

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

It is a longitudinal section showing the vacuum cleaner of a 1st embodiment of the present invention. It is a cross-sectional view which shows one elastic member of a vacuum cleaner same as the above from back. It is a cross-sectional view which shows the other elastic member of a vacuum cleaner same as the above from the front. It is explanatory drawing which shows the effect | action of the elastic member of a vacuum cleaner same as the above. It is a perspective view which shows a vacuum cleaner same as the above. It is a longitudinal cross-sectional view which shows the vacuum cleaner of the 2nd Embodiment of this invention. It is a cross-sectional view which shows one elastic member group of a vacuum cleaner same as the above from back. It is a cross-sectional view which shows the other elastic member group of a vacuum cleaner same as the above from back. It is a cross-sectional view which shows further another elastic member group of a vacuum cleaner same as the above from the front.

Explanation of symbols

5 Body case 6 Blower chamber as storage room
11 Electric blower
45 Leaf spring as an elastic member
46 Leaf springs as elastic members

Claims (3)

An electric blower,
A body case that divides a storage chamber that stores the electric blower, and
A plurality of elastic member groups each including a pair of elastic members formed along at least a part of the outer periphery of the electric blower and supporting the electric blower against the main body case at positions facing each other. Equipped,
The elastic member groups are arranged at positions different from each other in the axial direction of the electric blower so that the respective elastic members are substantially equally spaced in the circumferential direction of the electric blower. Electric vacuum cleaner. Two elastic member groups are provided, and are arranged on one side and the other side in the axial direction with respect to the center of gravity of the electric blower at angles different from each other by 90 ° with respect to the circumferential direction of the electric blower. The electric vacuum cleaner according to claim 1, wherein: Three elastic member groups are provided and arranged at different angles by 60 ° with respect to the circumferential direction of the electric blower,
The one elastic member group is disposed at a position corresponding to the center of gravity of the electric blower,
The vacuum cleaner according to claim 1, wherein the remaining other elastic member groups are arranged with one elastic member group interposed therebetween.

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