JP2013000137A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner that exhausts clean air and can reduce vibration noise.SOLUTION: The vacuum cleaner 1 comprises: a suction portion provided in a case that houses an electric air blower 10; a suction port 10a communicating with the suction portion, which is provided in the electric air blower 10; an airtight member 35 that is interposed between the suction portion and the suction port 10a and keeps airtightness nearly in the axis direction of the electric air blower 10; and an elastic supporting unit 50 that is provided separately from the airtight member 35 and supports the electric air blower 10. The elastic supporting unit 50 supports the electric air blower 10 at a position closer to the airtight member 35 from the center position of an entire length L in the rotating shaft direction of the electric air blower 10, from a direction perpendicular to a rotating shaft 13.

Description

  The present invention relates to a vacuum cleaner.

  Conventionally, in a vacuum cleaner incorporating an electric blower, the vibration of the electric blower propagates from the electric blower to the housing of the cleaner body, and the vibration propagated to the housing propagates from the housing to the atmosphere and generates vibration. Are known.

  As a method for reducing the noise due to such vibration, a method for directly suppressing vibration generation of an electric blower that is a vibration source and a method for reducing propagation of vibration of the electric blower are known. Among these, the method disclosed in Patent Document 1 is known as a method for reducing the propagation of vibration of the electric blower.

  The electric vacuum cleaner of Patent Literature 1 includes an electric blower and a motor cover that covers the electric blower, and the electric blower is supported by the motor cover via a motor cushion.

  On the other hand, the electric blower used for the vacuum cleaner obtains the suction performance by discharging the air sucked from the intake port from the exhaust port. For this reason, in the vacuum cleaner, it is necessary to maintain the airtightness of the exhaust port side and the intake port side so that the air discharged from the exhaust port is not sucked into the intake port and circulated inside the vacuum cleaner body. is there.

The thing disclosed by patent document 2 is known as what reduces propagation | transmission of the vibration of an electric blower, aiming at such airtight maintenance.
In the electric vacuum cleaner of patent document 2, the sealing member which has airtightness and vibration proof property is provided in the inlet port of the electric blower, and supports the trunk | drum of an electric blower with respect to a main body case separately from this seal member An urging means is provided. By this urging means, it is possible to prevent translational motion in which the upper and lower ends of the electric blower rotate in the same phase with respect to the rotation axis.

JP 2008-212500 A JP 2010-259488 A

  In the electric vacuum cleaner of Patent Document 1, the motor cushion supporting the periphery of the fan casing of the electric blower has a substantially U-shaped cross section, and covers the fan casing from the two directions of the lower surface side and the outer peripheral surface side. It was a structure to support. For this reason, when a conical vibration in which the upper and lower ends of the electric blower rotate at a different phase with respect to the rotation axis occurs in the electric blower, the vibration may propagate to the motor cover through the motor cushion.

  Moreover, in the vacuum cleaner of patent document 2, although it can prevent the translational movement which the upper and lower ends of an electric blower rotate with the same phase with respect to a rotating shaft as mentioned above, an urging means is a suction inlet of an electric blower. Since the electric blower is supported in the vicinity of the end on the opposite side (in the vicinity of the end on the opposite side in the axial direction and spaced from the suction port), the upper and lower ends of the electric blower are also in this case with respect to the rotating shaft. If conical vibrations rotating at different phases occur, there is a possibility that this cannot be suppressed appropriately.

  On the other hand, in the electric vacuum cleaners of Patent Literatures 1 and 2, in order to enhance the vibration isolation effect by the fan casing and the seal member, it can be considered that these are flexibly deformed along with the vibration. However, if it does so, there exists a possibility that the support performance of an electric blower may fall, and this might lead to the fall of airtight performance, and there existed a possibility that suction performance might fall. On the contrary, if the rigidity of the fan cover or the seal member is increased in order to stabilize the airtightness or the support, the vibration-proofing effect is lowered and the vibration may be increased. For this reason, it has been desired to develop a technique capable of obtaining a vibration isolation effect while maintaining the suction performance.

  Then, an object of this invention is to provide the vacuum cleaner which can suppress the vibration propagation from an electric blower and reduce noise, without reducing the suction performance of a vacuum cleaner.

In order to achieve the above object, an electric vacuum cleaner of the present invention includes an electric blower, a case that houses the electric blower, a suction portion provided in the case, and an electric blower that is provided in the electric blower. The electric blower provided separately from the air inlet, the air-tight member interposed between the suction portion and the suction port for holding the air-tightness in the substantially axial direction of the electric blower, and the air-tight member An elastic support means for supporting the electric blower, wherein the elastic support means is located on the rotary shaft at a position closer to the airtight member than the center position of the entire length of the electric blower in the rotary shaft direction. The electric blower is supported from an orthogonal direction.
The vacuum cleaner of the present invention includes an electric blower, a case that houses the electric blower, a suction portion that is provided in the case, a suction port that is provided in the electric blower and communicates with the suction portion, An airtight member interposed between the suction portion and the suction port, and maintaining airtightness in a substantially axial direction of the electric blower; and an elastic support means for supporting the electric blower provided separately from the airtight member. The case includes a first member provided with a filter, and a second member having the suction portion, and the first member and the second member. Are coupled via a seal member, and the elastic support means is located at a position closer to the airtight member than a central position of the entire length of the electric blower in the rotation axis direction, and is electrically driven from a direction orthogonal to the rotation axis. Supporting the blower And features.
Furthermore, the electric vacuum cleaner of the present invention includes an electric blower, a case for housing the electric blower, a suction portion provided in the case, a suction port provided in the electric blower and communicating with the suction portion, An airtight member interposed between the suction portion and the suction port, and maintaining airtightness in a substantially axial direction of the electric blower; and an elastic support means for supporting the electric blower provided separately from the airtight member. The electric blower is supported in the case in a posture in which the rotation axis of the electric blower is in the vertical direction, and the elastic support means is arranged in the rotation axis direction of the electric blower. The electric blower is supported from the direction orthogonal to the rotation axis at a position closer to the airtight member than the center position of the entire length.

  ADVANTAGE OF THE INVENTION According to this invention, the vacuum cleaner which can suppress the vibration propagation from an electric blower and can reduce a noise can be provided, without reducing the suction performance of a vacuum cleaner.

It is a perspective view which shows the external appearance of the vacuum cleaner which concerns on 1st Embodiment of this invention. It is an enlarged longitudinal section showing the vacuum cleaner main part of the vacuum cleaner concerning a 1st embodiment of the present invention. (A) is a perspective view which shows the state which opened the front cover of the dust accommodating part used for the vacuum cleaner which concerns on 1st Embodiment of this invention, (b) shows the state which similarly opened the filter of the dust accommodating part. It is a perspective view. It is a disassembled perspective view of the principal part. It is a disassembled perspective view when an intake duct is seen from the electric blower side (lower side). It is the perspective view which looked at the airtight member shown in Drawing 5 from the air intake duct side (upper side). It is the perspective view which looked at the fixing member shown in FIG. 5 from the intake duct side (upper side). It is the elements on larger scale which showed the support structure of an electric blower. It is the fragmentary sectional view which showed the airtight member and the elastic support means. It is a fragmentary sectional view of an electric blower. It is the top view which showed the internal structure of the cleaner body. It is the expanded longitudinal cross-sectional view which showed the vacuum cleaner main body of the vacuum cleaner of 2nd Embodiment of this invention.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings as appropriate. However, the embodiments are not limited to the following contents, and can be arbitrarily modified within the scope of the invention. It is.
In the following, as shown in FIG. 2, in the cleaner body 2, the side on which the connection port 2a to which the hose portion 3 (see FIG. 1) is connected is formed, and the side on which the exhaust port 2d is formed. The rear side, the side on which the handle 26 is provided, will be described as the upper side, and the side on which the electrical component 48 such as a substrate will be provided as the lower side. Moreover, as shown in FIG. 11, the side where the left wheel 55a of the cleaner body 2 is provided will be described as the left side, and the side where the right wheel 55b is provided will be described as the right side.

(First embodiment)
As shown in FIG. 1, the vacuum cleaner 1 includes a vacuum cleaner body 2, a hose portion 3, an operation tube 4 provided with a hand operation switch SW and the like, an extension tube 5 provided in a telescopic manner, The second suction tool 6 and the first suction tool 7 are provided.
The vacuum cleaner body 2 includes an electric blower 10 (see FIG. 2) described later, and sucks dust from the first suction tool 7 and the like by the suction force generated by the electric blower 10. A ventilation path (not shown) is provided inside the hose portion 3, the operation pipe 4, the extension pipe 5, and the second suction tool 6 from the cleaner body 2 to the first suction tool 7, and the first suction The dust sucked from the tool 7 is sucked into the cleaner body 2 through the second suction tool 6, the extension pipe 5, the operation pipe 4 and the hose part 3.

As shown in FIG. 2, the cleaner body 2 includes a tubular connection port 2a at the front end. The front side of the vacuum cleaner body 2 is provided with a dust collector 20 that separates and collects dust sucked from the connection port 2a, and the rear side of the cleaner body 2 communicates with the dust collector 20 to provide a suction force. A generated electric blower 10 is provided.
A joint pipe 3a provided in the hose portion 3 (see FIG. 1) is inserted and held in the connection port 2a. A seal member 2b is provided at one end of the connection port 2a, and the seal member 2b is configured to maintain airtightness between the joint pipe 3a and the inlet pipe 20a provided on the dust collector 20 side. On the lower surface of the front portion of the vacuum cleaner body 2 (below the dust collector 20), a caster support portion 2c for supporting the casters is provided.

  The dust collector 20 includes a dust separation unit 21 and a dust storage unit 22. The dust separation unit 21 is a part that swirls the sucked air and separates the dust by a centrifugal separation action (cyclone method). The dust container 22 communicates with the dust separator 21 and includes therein a dust collection basket 27 that stores the dust separated by the dust separator 21.

  The dust separation unit 21 and the dust storage unit 22 are arranged in the axial direction (front-rear inclination direction) of the dust collector 20, and are connected to each other in such a manner that the opposite axial ends are connected. It is configured to be easily separable by a user operation. Among these, the dust separation part 21 is arrange | positioned at the front side of the cleaner body 2, and the dust accommodating part 22 is arrange | positioned rather than the dust separation part 21 in the diagonally back side of the cleaner body 2. FIG. An opening 21a is provided at the front end of the dust separator 21, and the opening 21a is connected to the inlet pipe 20a. In addition, you may connect the circumferential surface of the front-end part of the dust separation part 21 with respect to the inlet pipe 20a.

  The dust separation unit 21 includes an outer cylinder 21b and an inner cylinder 21c provided in the outer cylinder 21b and having a filter function. A plurality of through holes 21d are formed in the peripheral surface of the inner cylinder 21c. In the dust separator 21, air flows from the outside of the inner cylinder 21c (inside of the outer cylinder 21b) to the inside of the inner cylinder 21c through the through hole 21d, and at this time, the air does not pass through the through hole 21d. Garbage is separated between the outer cylinder 21b and the inner cylinder 21c. In this case, although depending on the suction force, for example, dust having a weight of 1 yen or more is left in the outer cylinder 21b without being sucked up in the outer cylinder 21b.

  The outer cylinder 21b and the inner cylinder 21c are provided so as to be easily separable by a user operation. As a result, when the waste is thrown away, the outer cylinder 21b and the inner cylinder 21c are separated, whereby the dust accumulated in the outer cylinder 21b can be discharged, and the hair or thread caught in the through hole 21d of the inner cylinder 21c. Even when there is dust such as waste, it can be easily removed.

As shown in FIG. 2, the dust container 22 includes a hollow container case 22a having a substantially inverted triangular shape in a longitudinal section (see FIG. 3A), and a front lid that closes the front opening of the container case 22a. 23, and a filter 24 that functions as a rear lid that closes the rear opening of the housing case 22a.
The front lid 23 is provided so as to be openable and closable around the hinge portion 23a, and in a closed state, the front surface of the front lid 23 comes into contact with the rear portion of the dust separation portion 21 disposed on the front side. A hook portion 23b is provided on the upper rear surface of the front lid 23 so as to protrude rearward. The hook portion 23b can be locked to a receiving portion 22b provided at the front opening edge of the housing case 22a. By hooking the hook portion 23b to the receiving portion 22b, the hook portion 23b can be locked to the front opening of the housing case 22a. The front lid 23 is held in a closed state. This prevents the front lid 23 from opening unexpectedly.

A button 25 (which may be a member such as a lever) that can be pressed by the user is provided on the upper portion of the housing case 22a. The button 25 is connected to a transmission rod (rod) 25a that extends to the front side of the housing case 22a. The rear end of the transmission rod 25a is connected to the button 25, and the other end of the transmission rod 25a is connected to the receiving portion 22b.
In such a configuration, when the button 25 is pressed by the user, the transmission rod 25a slides forward, the receiving portion 22b protrudes forward, and the receiving portion 22b and the hook portion 23b are locked. It is to be released. When the locking between the receiving portion 22b and the hook portion 23b is released, the front lid 23 is opened with the hinge portion 23a as the center, as shown in FIG.

  The front opening of the housing case 22a is inclined approximately 45 to 50 degrees forward from the vertical direction. A handle 26 extending in a substantially horizontal direction is provided on the upper portion of the housing case 22a. When throwing away the trash, the user can hold the handle 26 to lift the dust container 22 upward, and leave only the dust container 22 from the cleaner body 2 while leaving the dust separator 21 in the cleaner body 2. Can be removed. Here, when the user grasps the handle 26 and lifts the dust container 22 upward, the front lid 23 is closed in a state of being inclined obliquely downward. When the user presses down 25, the latching between the receiving portion 22b and the hook portion 23b is released, the front lid 23 is turned forward by its own weight with the hinge portion 23a as a fulcrum, and the front opening of the housing case 22a is opened. It becomes a state.

As shown in FIG. 2, the dust collecting basket 27 has a substantially trapezoidal cross section and is accommodated in the dust accommodating portion 22. In the dust collecting basket 27, an upper container 27a and a lower container 27b, which are divided into upper and lower parts, are connected via a rear hinge 27c. When the garbage is thrown away, as shown in FIG. The lower container 27b is rotated about the hinge part 27e while being opened up and down by a hinge 27c.
The dust collecting basket 27 may have a shape recessed on the side opposite to the opening (rear side), and the shape may be a cage shape, a box shape, or a container shape with one surface opened. It may be a dust shape.
The cross-sectional shape of the dust collecting basket 27 in the front-rear direction may be a substantially square shape, a substantially circular shape, or a substantially triangular shape. Preferably, it is formed so that a cross section becomes smaller from the opening side (front side) toward the bottom side (rear side). By forming in this way, the cross-sectional area increases toward the side (opening side) where the dust is discharged, so that the user can easily discharge the dust accumulated in the dust collecting basket 27.

The dust collecting basket 27 has a frame body 27d (support frame), and mesh members made of metal, nylon, or the like are coated or adhered to the bottom surface, upper, lower, left, and right surfaces other than the opening. Thus, by providing air permeability not only on the bottom surface of the dust collecting basket 27 but also on the top, bottom, left and right surfaces, a flow path can be secured even if dust accumulates on the bottom surface of the dust collecting basket 27. This contributes to reducing the pressure loss of the intake air and suppressing the reduction of the suction force.
The mesh member is air permeable and has a filter function of collecting dust. In addition, as long as the mesh member has a filter function, a disposable tissue paper that can be easily purchased at a convenience store or the like may be used instead of the mesh member, or a combination of the mesh member and the tissue paper may be used. May be. For example, the user may put tissue paper on the mesh member.

  The dust collecting basket 27 is provided with a biasing means such as a spring (not shown), and when the button 25 is pressed, the biasing means causes the dust collecting basket 27 to jump out to the front side of the housing case 22a. You may comprise so that the front cover 23 may be pushed open with the dust collecting basket 27 using the biasing force of a biasing means.

The rear filter 24 is provided so as to be openable and closable around the hinge portion 24a, and in a closed state, the rear surface abuts against the front portion of the intake duct 30 disposed on the rear side (covers the front portion). )
As shown in FIG. 3B, the filter 24 includes a frame body 24b having a substantially square cross-sectional shape, and a filter member 24c folded in a pleat shape is disposed in the frame body 24b. The wave direction of the filter member 24c (the direction of the peaks and valleys) is preferably the vertical direction (the direction of gravity action). As the filter member 24c, for example, a high-density HEPA filter (High Efficiency Particulate Air Filter) can be used. The HEPA filter has a particle collection rate of 99.97% or more with respect to particles having a rated air volume and a particle size of 0.3 μm, and an initial pressure loss of 245 Pa or less.

In the present embodiment, packing 24d is provided on the rear surface of the filter 24 (the surface facing the intake duct 30) as shown in FIG. The packing 24d maintains airtightness between the rear surface of the dust container 22 (rear surface of the filter 24) and the cleaner body 2 (particularly the intake duct 30). Note that the packing 24d is not necessarily provided.
Further, the two hinge parts 23a and the hinge part 24a may be shared by one hinge part. Further, the hinge portion 24 a may be provided not at the lower end portion of the filter 24 but at the upper end portion of the filter 24.

  An electric blower 10 is arranged on the rear side of the cleaner body 2. Above the electric blower 10 on the upstream side of the electric blower 10, an intake duct 30 (second member) is provided as a synthetic resin case extending in the front-rear direction of the cleaner body 2. The electric blower 10 is accommodated in an exhaust duct 40 (first member) as a case made of synthetic resin, and a filter 45 is provided in a duct portion 42 extending in front of the electric blower 10 on the downstream side of the electric blower 10. It has been.

  An opening 30a is provided at the front end of the intake duct 30 in the extending direction, and a packing 24d provided on the filter 24 of the dust container 22 disposed in the front is attached to the opening 30a. It has become. An auxiliary filter 31 that adsorbs dust remaining outside the dust collector 20 is provided in the opening 30a. The auxiliary filter 31 suitably suppresses dust from being sucked into the electric blower 10 disposed on the downstream side.

A dust removing device 32 for removing dust attached to the filter 24 of the dust container 22 is provided on the auxiliary filter 31. The dust removing device 32 includes a spiral spring (elastic body) (not shown) on the outer periphery of the rotating body, and the spiral spring repels the filter member 24c (see FIG. 3B) of the filter 24. As a result, dust adhering to the filter member 24c is shaken off.
The dust removing device 32 can be configured to be driven by a motor (not shown) or by a pulling operation of a cord 61 wound around the cord reel 60 as shown in FIG.

  As shown in FIG. 3B, the filter member 24c, as described above, has a vertical direction in the peaks and valleys, so that the dust that has been shaken off easily falls in the direction of gravity. The dust shaken off from the filter member 24c accumulates in the housing case 22a. Thereby, clogging of the filter member 24c can be prevented, and a reduction in air pressure loss can be suppressed. This contributes to suppression of a decrease in suction force.

As shown in FIG. 2, the rear end in the extending direction of the intake duct 30 communicates with the electric blower 10, and the lower surface on the rear side of the intake duct 30 opens toward the suction port 10 a of the electric blower 10. An opening 30n is formed as a suction portion.
Further, an airtight member 35 that holds the airtightness in the substantially axial direction of the electric blower 10 is attached to the lower edge peripheral portion of the opening 30n. Thereby, the flow of the air that has passed through the dust collector 20 is deflected by the intake duct 30 and flows into the electric blower 10 from the opening 30n through the suction port 10a.

As shown in FIGS. 2, 5, and 6, the airtight member 35 has an annular shape and is made of an elastic material such as synthetic rubber. The airtight member 35 is formed on a base portion 35a, a cylindrical lip portion 35b extending from the base portion 35a toward the electric blower 10 (see FIGS. 2 and 4), and an upper surface of the base portion 35a. A plurality of concentric grooves 35c (see FIG. 6). As shown in FIG. 5, the plurality of concentric grooves 35 c can be engaged with a plurality of concentric protrusions 32 a provided on the lower edge of the opening 30 n of the intake duct 30.
The airtight member 35 is disposed on the lower edge peripheral portion of the opening 30n by engaging the groove portions 35c with these projecting portions 32a, and the base portion 35a is vertically attached by the fixing member 36 attached to the partition wall 30j from below. It is fixed to the intake duct 30 so as to be sandwiched.

As shown in FIG. 5, the fixing member 36 is provided with a plurality of screw holes 36 a through which fixing screws 37 (see FIG. 9) are inserted, and two protrusions 36 b are formed on the periphery. Yes. The plurality of screw holes 36a respectively correspond to the plurality of boss portions 30g formed on the lower surface of the partition wall 30j, and the two protrusions 36b are engaged with the two engagement grooves 30h formed on the lower surface of the partition wall 30j. Is possible. For this reason, the positioning of the fixing member 36 is easy, and the manufacturing time can be shortened.
Further, as shown in FIG. 7, an annular holding piece 36 c is formed on the inner peripheral portion of the fixing member 36. As shown in FIG. 9, the holding piece 36 c can hold the base portion 35 a of the airtight member 35 between the holding piece 36 c and the partition wall 30 j (see FIG. 5) of the intake duct 30.

  Here, as shown in FIG. 2, the upper surface side of the partition wall 30j from which the boss 30g protrudes is an air guide path 30k from the dust collector 20 to the electric blower 10, so that it is shown in FIG. If the fixing member 36 is to be fixed to the partition wall 30j without providing the boss portion 30g, it is necessary to increase the thickness of the partition wall 30j itself or to form the boss portion so as to protrude toward the air guide path 30k. There is a possibility that resistance will be generated in the air flow of the air flow in the air guide passage 30k.

  On the other hand, by forming the boss portion 30g as in the present embodiment on the lower surface of the partition wall 30j, the thickness of the partition wall 30j itself is increased, or the boss portion is protruded toward the air guide path 30k. In addition, since the airtight member 35 can be sandwiched between the partition wall 30j and the fixing member 36, it is possible to suitably fix the airtight member 35 while reducing the weight. For this reason, it is not accompanied by the increase in resistance at the time of air flowing through the air guide path 30k, and the fall of a suction force can be prevented.

  When the airtight member 35 is fixed to the intake duct 30 (partition wall 30j) and the intake duct 30 is attached to the exhaust duct 40 as described later, the electric blower 10 accommodated in the exhaust duct 40 as shown in FIG. The lip portion 35b of the airtight member 35 comes into contact with and closely contacts the upper surface 11a of the fan casing 11. Thereby, the inside of the intake duct 30 and the inside of the fan casing 11 communicate in an airtight manner.

  Further, as shown in FIG. 5, three projecting pieces 30 m are formed on the periphery of the partition wall 30 j of the intake duct 30 at positions corresponding to the recesses 41 c formed in the accommodating portion 41 of the exhaust duct 40. Yes. When the intake duct 30 is attached to the exhaust duct 40, the projecting piece 30m is inserted into the concave portion 41c of the exhaust duct 40 and holds the elastic body 53 of the elastic support means 50 described later. .

  On the other hand, as shown in FIGS. 2 and 4, the exhaust duct 40 includes a housing part 41 having a space for housing the electric blower 10, and a duct part 42 formed integrally with the housing part 41. ing. The accommodating part 41 includes a large-diameter first accommodating part 41 a that accommodates the fan casing 11 of the electric blower 10 and a small-diameter second accommodating part 41 b that accommodates the motor casing 12 of the electric blower 10. Yes.

  In the present embodiment, the intake duct 30 is connected to the first housing portion 41 a having a substantially circular opening via the seal member 46. The seal member 46 is accommodated in a concave groove 30p (see FIG. 5) provided in a connection portion of the intake duct 30, and is in contact with the concave groove 30p and the upper edge portion 41e (see FIG. 4) of the first accommodating portion 41a. Are arranged.

  As shown in FIG. 4, the intake duct 30 and the first accommodating portion 41a are fixed by passing a screw (not shown) through a boss hole 30d provided on the peripheral edge of the intake duct 30 and inserting the screw into the boss of the first accommodating portion 41a. This can be done by fastening to the portion 41d. By fastening the screw, the seal member 46 is deformed by receiving pressure uniformly from the concave groove 30p (see FIG. 5) of the intake duct 30 and the upper edge portion 41e of the exhaust duct 40, and maintains an airtight state. In this embodiment, since the intake duct 30 and the exhaust duct 40 are made of synthetic resin, a seal member 46 made of silicon rubber is used. As the seal member 46, an elastic member having a large deformation amount and low hardness, or an adhesive member may be used.

Further, in order to increase the pressure resistance performance of the space in which the electric blower 10 is accommodated, for example, in order to cope with the clogging of the filter 45 provided in the exhaust duct 40, an elastic material with high hardness is used to increase the fastening force by screws. The seal member 46 may be formed of a member.
In addition, the fastening positions of the intake duct 30 and the exhaust duct 40 by screws are four places in order to deform the seal member 46 substantially uniformly, but the present invention is not limited to this, and the seal member 46 is deformed uniformly. As long as it is possible, it may be 3 or less, or 5 or more. Further, instead of fastening with screws, fixing means such as a clamp using an elastic body may be used.

  In the present embodiment, the fan casing 11 is elastically supported via the elastic support means 50 inside the first accommodating portion 41a as shown in FIGS. That is, of the casing of the electric blower 10, the electric blower 10 is supported by the elastic support means 50 on the side of the fan casing 11 having a larger diameter than the small-diameter motor casing 12.

As shown in FIG. 8, the elastic support means 50 includes a contact portion 51 made of an elastic member, a boss portion 52 connected to the contact portion 51, and a coil spring-like elastic body 53 attached to the boss portion 52. And is configured.
The contact portion 51 has a substantially hemispherical shape, and supports the fan casing 11 such that the tip portion is pressed against the outer peripheral surface 11 b of the fan casing 11. In this embodiment, the contact part 51 is comprised so that it may contact | abut around the lower flange part 11b1 provided in the lower part of the outer peripheral surface 11b of the fan casing 11 (refer FIG. 9). The boss part 52 has a plurality of ribs 52a extending radially from the center part in a side view, and forms an arc that holds the boss part 52 at the outer periphery of the tip of the plurality of ribs 52a. The elastic body 53 is attached to the boss portion 52 by being externally fitted to the outer peripheral portions of the tips of the plurality of ribs 52a.
The boss portion 52 is not limited to the one formed by the plurality of ribs 52a, and is fixed by externally fitting an elastic body 53 such as a circular shape, a quadrangular shape, a triangular shape, or a polygonal shape in a side view. Any shape can be used as long as it is.

In the present embodiment, the elastic support means 50 is attached to the annular support member 54, and a total of three elastic support means 50 are arranged at predetermined intervals in the circumferential direction of the motor casing 12.
As shown in FIG. 8, the support member 54 includes a ring portion 54a having a flat upper surface, and a raised portion 54b that rises perpendicularly from the outer peripheral edge of the ring portion 54a. The inner diameter of the ring portion 54a is formed to be larger than the outer diameter of the motor casing 12, and a gap is formed between the ring portion 54a and the motor casing 12 (see FIG. 9). Further, as shown in FIG. 9, the upper surface 54a1 of the ring portion 54a can be in contact with the lower surface 11c of the fan casing 11, and the elastic support means 50 is in contact with the lower surface 11c in contact with the upper surface 54a1. The portion 51 comes into contact with the periphery of the lower flange portion 11b1 of the outer peripheral surface 11b.

Each elastic support means 50 is attached to the upright portion 44b so that the axis O1 (see FIG. 8) is located in a plane (not shown) orthogonal to the rotating shaft 13 (see FIG. 10) of the electric blower 10. It has been. In the attached state, the contact portion 51 of each elastic support means 50 is set such that the inner diameter of a circle inscribed in the apex on the fan casing 11 side is slightly smaller than the outer diameter of the fan casing 11. Thereby, each elastic support means 50 is disposed in close contact with the outer peripheral surface 11 b of the fan casing 11.
Each elastic support means 50 can be attached by forming a hole (not shown) or a notch (not shown) in the upright portion 44b.
The sizes of the contact portion 51, the boss portion 52, and the elastic body 53 can be set as appropriate. The number of elastic support means 50 can also be set as appropriate.

Corresponding to the position where the elastic support means 50 is arranged, as shown in FIG. 4, the exhaust duct 40 has three concave portions 41 c in the opening portion of the accommodating portion 41 (first accommodating portion 41 a). Is formed. Each recess 41 c is provided in a size that can accommodate the end of the elastic body 53 of each elastic support means 50, and preferably supports the end of each elastic body 53.
A boss portion 41d for connecting and fixing the intake duct 30 is provided on the outer peripheral surface of the first housing portion 41a.

As shown in FIG. 2, a vibration isolating material 49 made of synthetic rubber is installed on the bottom surface of the second housing portion 41b. The vibration isolator 49 is configured to accommodate and hold the lower end portion 17 of the motor casing 12, so that the electric blower 10 directly collides with the exhaust duct 40 when an impact due to dropping of the cleaner body 2 or the like is applied. Is preventing.
The vibration isolator 49 is not limited to a synthetic rubber material, and may be formed of a spring member or the like.

As shown in FIG. 2, the duct portion 42 of the exhaust duct 40 extends toward the front side of the cleaner body 2 (the downstream side is the front side), and a packing 44 is interposed in the opening thereof. A filter 45 is arranged. The filter 45 is airtightly fixed by a screw or the like (not shown). Thereby, the airtightness between the exhaust duct 40 and the filter 45 can be maintained, and the exhaust discharged from the exhaust port 2 d described later of the electric blower 10 passes through the filter 45.
The filter 45 includes a filter member folded in a pleat shape within a frame having a substantially square cross-sectional shape. The direction of the peaks and valleys of the filter member is preferably the vertical direction (gravity acting direction). As the filter 45, for example, a high-density ULPA filter (Ultra Low Penetration Air Filter) can be used. The ULPA filter is an air filter having a particle collection rate of 99.9995% or more with respect to particles having a rated air volume of 0.15 μm and an initial pressure loss of 245 Pa or less. The particle collection efficiency is higher than the particle collection efficiency. By using such a ULPA filter, the exhaust discharged from the exhaust port 2d on the rear end face of the cleaner body 2 can always be cleaner than the air around the cleaner body 2.

  As shown in FIG. 2, the electric blower 10 has a rotating shaft 13 in the exhaust duct 40 whose suction port 10 a of the electric blower 10 faces upward (facing upward so as to face the opening 30 n of the intake duct 30). Is installed (supported) in a vertical posture in a vertical direction. In the electric blower 10, the length L (the total length L in the direction of the rotating shaft 13 of the electric blower 10) from the suction port 10 a at the upper end to the lower end portion 12 a on the opposite side is the most among the dimensions of the electric blower 10. Large dimensions. That is, the electric blower 10 is accommodated in the cleaner body 2 in a posture in which the maximum dimension is in the vertical direction, and thereby, the size of the cleaner body 2 in the front-rear direction is reduced.

  As shown in FIG. 10, the electric blower 10 is covered with a fan casing 11 and a motor casing 12, and a rotating shaft 13, a rotor 13 a provided integrally with the rotating shaft 13, and a rotating shaft 13 are provided therein. An impeller 14 that is fastened, a stationary blade 11d that decelerates the flow, a return flow path 11e that changes the flow, a stator 15 that generates electromagnetic force, and a rectifying brush 16 that supplies current are incorporated.

In the electric blower 10, the outer peripheral surface 11b of the fan casing 11 and the lower flange portion 11b1 of the outer peripheral surface 11b are positioned at the suction port 10a side (upper side) than the position of the length L / 2 that is the central position of the entire length L. Is provided. That is, as shown in FIG. 9, the elastic support means 50 is an electric blower through the fan casing 11 at a position that is closer to the suction port 10 a than the position of the length L / 2 that is the center position of the entire length L. 10 is supported.
In other words, the electric blower 10 includes two airtight members 35 at the upper end and the elastic support means 50 provided separately from the airtight member 35 in the axial direction of the rotating shaft 13 (see FIG. 10). It is supported at two places (two places in the direction of the rotary shaft 13). In addition, since the electric blower 10 is supported at two locations on the side of the suction port 10a, which is closer to the suction port 10a than the position of the length L / 2, and on the side of the fan casing 11 where vibration is likely to occur, The airtight member 35 and the elastic support means 50 are supported so as to positively set vibration nodes of the electric blower 10. In other words, the electric blower 10 is supported by the elastic support means 50 in the vicinity of a position corresponding to a vibration node.

  As shown in FIG. 10, in such an electric blower 10, when an AC voltage is applied to the rectifying brush 16, electromagnetic force is generated in the rotor 13a and the stator 15, and the rotor 13a and the stator 15 are attracted to each other. Alternatively, repulsion causes the rotation shaft 13 to rotate. When the rotating shaft 13 rotates, the impeller 14 rotates and air is sucked from the suction port 10a to generate a suction force.

  The air sucked from the suction port 10a by the rotation of the impeller 14 generates wind in a direction away from the rotation shaft 13 by the impeller 14, and flows into the stationary blade 11d. The air flowing into the stationary blade 11d is decelerated, cools the stator 15 and the rotor 13a, and flows out from the exhaust port 10b provided on the outer peripheral surface of the motor casing 12 to the accommodating portion 41 of the exhaust duct 40 (see FIG. 2). To do.

As shown in FIG. 2, the air that has flowed out into the accommodating portion 41 of the exhaust duct 40 flows into the duct portion 42 and is discharged to the outside of the exhaust duct 40 through the filter 45 of the duct portion 42. Thereafter, the air discharged from the exhaust duct 40 flows to the rear side along the lower side of the exhaust duct 40, flows upward along the rear side of the exhaust duct 40, and flows into the cleaner body 2. It is discharged outside through the exhaust port 2d.
In addition, the electrical component 48 arrange | positioned at the lower part of the exhaust duct 40 is cooled with the air which flows along the downward direction of the exhaust duct 40. As shown in FIG.

  In such an air flow, the filter 45 generates dust that cannot be filtered by the filter 24 provided in the dust collector 20, dust that is directly mixed when the dust collector 20 is removed, or dust from the electric blower 10. Filter out fine dust. Therefore, the air sucked into the cleaner body 2 is made into clean air and discharged to the outside of the cleaner body 2.

As shown in FIG. 11, a cord 61 provided so as to be able to be pulled out from the rear part of the cleaner body 2 has a plug 62 at the tip, and electricity is obtained by inserting the plug 62 into an outlet in a room or the like. The cord 61 is wound around a cord reel 60 provided in the cord reel chamber 63. Thus, it is preferable to store the cord 61 in the left side of the rear portion of the vacuum cleaner body 2 because it does not get in the way when the vacuum cleaner 1 is used or not used.
In addition, when the cord reel chamber 63 is provided in the front part of the cleaner body 2 so that the plug 62 and the cord 61 can be taken out from the front part of the cleaner body 2, the plug 62 and the cord 61 come out in the traveling direction. Difficult to handle when cleaning. Further, when the plug 62 and the cord 61 are configured to protrude from the side surface and the upper surface of the cleaner body 2, it is difficult to handle at the time of cleaning.

On the other hand, by providing the cord reel chamber 63 so that the plug 62 and the cord 61 can be pulled out from the rear part of the cleaner body 2 as in the present embodiment, it does not interfere with the direction of travel or the direction change during cleaning. It becomes easy to handle. In the present embodiment, the electric blower 10 and the cord reel chamber 63 are adjacently disposed in the left-right direction in the cleaner body 2. Further, the electric blower 10 and the cord reel chamber 63 are provided on the rear side of the dust collector 20 in the cleaner body 2.
Here, the longitudinal length of the cord reel chamber 63 is longer than the longitudinal length of the electric blower 10 and is shorter than the longitudinal length of the electric blower 10 and the exhaust duct 40 combined. Is set to

Next, assembly of the electric blower 10 to the exhaust duct 40 and assembly of the intake duct 30 will be described with reference to FIG. 2, FIG. 4, FIG. 8, FIG.
First, the support member 54 to which the elastic support means 50 is attached in advance is attached to the electric blower 10. The support member 54 is attached to the fan casing 11 through the motor casing 12 from below the motor casing 12 of the electric blower 10. At this time, the support member 54 is mounted so that the upper surface of the ring portion 54a of the support member 54 is in contact with the lower surface 11c of the fan casing 11, and the elastic support means 50 is attached to the outer peripheral surface 11b (lower flange portion 11b1) of the fan casing 11. Are brought into contact with each other (see FIG. 8).

Next, the electric blower 10 equipped with the elastic support means 50 is inserted from the opening of the exhaust duct 40. At this time, each elastic body 53 of the elastic support means 50 is inserted into each recess 41 c of the exhaust duct 40.
Thereafter, the intake duct 30 is attached to the exhaust duct 40 via the seal member 46, and screws (not shown) are passed through the boss holes 39 d of the intake duct 30 and fastened to the boss portions 41 d of the exhaust duct 40. Thereby, the electric blower 10 is accommodated in the exhaust duct 40, and the intake duct 30 is attached to the exhaust duct 40.

  When the intake duct 30 is attached to the exhaust duct 40, the lip portion 35 b of the airtight member 35 fixed to the intake duct 27 contacts the suction port 10 a on the upper surface 11 a that becomes the airtight surface of the fan casing 11 of the electric blower 10. To do. By this contact, the base portion 35a and the lip portion 35b of the airtight member 35 are deformed and deformed into the peripheral portion of the gap S formed around the protruding portion 32a of the partition wall 30j of the intake duct 30 as shown in FIG. Produce. A reaction force is generated by this deformation, and the lip portion 35b comes into contact with the upper surface 11a of the fan casing 11 with a sufficient surface pressure. Thereby, the airtightness of the airtight member 35 and the upper surface 11a of the fan casing 11 is maintained.

  The electric blower 10 is pushed downward by such an airtight member 35, but the elastic body 53 supported by the support member 54 that supports the electric blower 10 and the recesses 41 c of the exhaust duct 40. Due to the reaction force, the electric blower 10 receives an upward force, and the adhesion between the airtight member 35 and the upper surface 11a of the fan casing 11 is enhanced.

  As shown in FIG. 2, the electric blower 10 sucks air through the dust collecting device 20 through the intake duct 30, boosts the pressure with the impeller 14 (see FIG. 10), and enters the exhaust duct 40 from the exhaust port 10 b. Extruding towards. Therefore, as shown in FIG. 9, with the lip 35b of the airtight member 35 as a boundary, the radial inner side R1 of the lip 35b has a negative pressure and the radial outer side R2 has a positive pressure, resulting in a pressure difference. The fixing member 36 that fixes the portion 35a holds the lip portion 35b so as not to be deformed to the negative pressure side. As a result, airtightness between the suction side and the exhaust side is suitably maintained, and air is preferably prevented from flowing from the exhaust side to the intake side. Therefore, a reduction in suction performance is suitably prevented.

  The airtight member 35 has a gap S between the airtight member 35 and the projecting portion 32a of the partition wall 30j of the intake duct 30 in contact with the upper surface 11a of the fan casing 11, and elastically connects the electric blower 10 to the airtight member 35. keeping. Thereby, the transmission of vibration from the electric blower 10 to the intake duct 30 can be suppressed by the airtight member 35. In the present embodiment, the airtight member 35 made of synthetic rubber is used. However, the amount of vibration transmitted to the intake duct 30 may be reduced by using rubber having a lower hardness.

  According to the vacuum cleaner 1 of this embodiment demonstrated above, the airtight member 35 which hold | maintains the airtightness in the substantially rotating shaft 13 direction of the electric blower 10, and the elastic member 35 provided separately from the airtight member 35 and supporting the electric blower 10 are supported. And the elastic support means 50 is an outer peripheral surface of the fan casing 11 which is a position closer to the airtight member 35 than the center position (L / 2) of the entire length L in the direction of the rotary shaft 13 of the electric blower 10. In 11b, since the electric blower 10 is supported from the direction orthogonal to the rotating shaft 13, the vibration motion of the electric blower 10 is changed to a motion centering on the upper portion (fan casing 11) of the electric blower 10, and translational vibration is performed. Both of these vibrations can be prevented without distinguishing conical vibrations, and rotational vibration transmitted to the cleaner body 2 is reduced. That is, by vigorously supporting the side close to the suction side by the elastic support means 50, the vibration of the electric blower 10 is suppressed while the vibration generated on the suction side is positively suppressed and the airtightness is not impaired. Yes. Thereby, the noise resulting from the rotational vibration of the electric blower 10 can be effectively reduced.

  In addition, the fan casing 11 supported by the elastic support means 50 accommodates the impeller 14 having a diameter larger than that of the rotor 13a, and the fan casing is caused by the centrifugal force of the impeller 14 rotating at high speed. 11 is larger than the vibration generated on the motor casing 12 side (this is a portion where the vibration is increased), so that the electric blower 10 is actively supported on the fan casing 11 side to Vibration generated in the blower 10 can be suitably prevented.

  Further, since the electric blower 10 is supported by the elastic support means 50 in the vicinity of the position corresponding to the vibration node, the vibration can be efficiently suppressed, and the noise caused by the rotational vibration of the electric blower 10 is effective. Can be reduced.

  Further, since the elastic support means 50 is supported by the support member 54, the elastic support means 50 can be easily assembled to the electric blower 10 by assembling the support member 54 to the electric blower 10. This contributes to the improvement of productivity.

Since the airtight member 35 is mounted around the protruding portion 32a of the partition wall 30j of the intake duct 30 via the gap S, the base portion 35a and the lip portion 35b can be suitably deformed in the peripheral portion of the gap S. Can do. Thereby, the lip portion 35b can be brought into contact with the upper surface 11a of the fan casing 11 with a sufficient surface pressure by a reaction force due to deformation, and airtightness can be ensured. Therefore, the suction performance of the vacuum cleaner 1 can be suitably maintained, and the exhausted air does not include the air on the intake side, and the exhausted air becomes clean.
In addition, since it is possible to secure a favorable airtightness, it is not necessary to form the lip portion 35b thick in the radial direction, and the amount of vibration transmitted through the airtight member 35 due to the increase in the contact area due to the thickening. Will not increase.
In the airtight member 35 of the present embodiment, if clogging occurs in the filter 45 provided in the duct portion 42 downstream of the electric blower 10, for example, even if a positive pressure of 20 kPa or more is applied to the exhaust side, It is possible to suitably ensure the airtightness by the airtight member 35.

  Since the lip portion 35b is in contact with the upper surface 11a of the fan casing 11 in the vicinity of the suction port 10a and maintains the airtightness, the airtight member 35 has an upper surface in the vicinity of the outer peripheral surface 11b and the outer peripheral surface 11b of the fan casing 11. Compared to the case where the airtightness is maintained by abutting against 11a, the vibration transmission area and the airtight area are reduced, and the vibration-proofing property and the airtightness can be suitably secured.

  In addition, the electric blower 10 receives an upward force by the reaction force of the elastic body 53 of the elastic support means 50 due to the pressure of the airtight member 35, and the airtightness between the airtight member 35 and the upper surface 11 a of the fan casing 11. Therefore, the airtightness between them is suitably maintained, and the suction performance of the vacuum cleaner 1 can be suitably maintained.

  In addition, the fixing member 36 that fixes the airtight member 35 holds the airtight member 35 so as to prevent the lip portion 35b from being deformed to the negative pressure side, so that the airtightness between the suction side and the exhaust side is reduced. Is suitably held, and a reduction in suction performance can be suitably prevented.

  Furthermore, the airtight member 35 has a gap S between the airtight member 35 and the projecting portion 32a of the partition wall 30j of the intake duct 30 in contact with the upper surface 11a of the fan casing 11, so that the electric blower 10 can be elastically operated. Since it hold | maintains, the vibration of the electric blower 10 can be suppressed suitably.

  Further, the electric blower 10 has a length L from the suction port 10a at the upper end, which is the maximum dimension, to the lower end portion 12a on the opposite side to the vertical direction (the rotary shaft 13 is in the vertical direction). Since the vacuum cleaner main body 2 is accommodated in the posture, the size of the vacuum cleaner main body 2 in the front-rear direction can be reduced, and the electric vacuum cleaner 1 having excellent handling properties can be obtained.

  Moreover, since the case which accommodates the electric blower 10 consists of the intake duct 30 and the exhaust duct 40, and is couple | bonded (attached) via the sealing member 46, the above-mentioned airtight member 35 is provided. In combination with this, it is possible to suitably ensure the airtightness of the intake side and the exhaust side.

  In addition, as long as the elastic support means 50 is the position which becomes the inlet 10a side rather than the position of length L / 2 used as the center position of the full length L of the electric blower 10, as shown in FIG. The motor casing 12 may be supported at a position near the center of gravity G.

(Second Embodiment)
With reference to FIG. 12, the vacuum cleaner 1 of 2nd Embodiment is demonstrated. This embodiment is different from the first embodiment in that the rotary shaft 13 (see FIG. 10) of the electric blower 10 is directed in the front-rear direction (front-rear direction (horizontal direction)) of the cleaner body 2, and the cleaner body 2 It is a point that is housed inside.

  The intake duct 38 has a partition wall 30j provided with an airtight member 35, and an air guide path 38a connected to the front surface of the partition wall 30j. The front end portion of the air guide path 38 a is configured to be connectable to the rear surface of the filter 24 of the dust container 22.

  The duct portion 42 of the exhaust duct 40 is directed downward, and the exhaust duct 40 is disposed so that the filter 45 is located in the lower space of the cleaner body 2.

Also in this embodiment, the same effect as the effect demonstrated in the said 1st Embodiment is obtained. In addition, in the vacuum cleaner 1 of the present embodiment, the intake duct 30 can be simplified, and the manufacturing cost can be reduced.
Moreover, since the duct part 42 and the filter 45 of the exhaust duct 40 can be accommodated in the up-down direction in the cleaner body 2, a layout that efficiently uses the space in the up-down direction is possible. This contributes to downsizing of the cleaner body 2.
Moreover, compared with the vacuum cleaner 1 of 1st Embodiment, since the filter 45 is located in the back side of the cleaner body 2, the exhaust path from the filter 45 to the exhaust port 2d can be shortened, and more Efficient exhaust can be realized.

  In the first and second embodiments, the configuration in which the elastic support means 50 supports the fan casing 11 is shown. However, the present invention is not limited to this, and the length L /, which is the center position of the entire length L of the electric blower 10. As long as the position is closer to the suction port 10a than the position 2, the motor casing 12 may be supported at a position near the center of gravity G of the electric blower 10, as shown in FIG.

  Moreover, although the case was comprised from the air supply duct 30 and the exhaust duct 40, it is not restricted to this, As long as the electric blower 10 can be accommodated, you may comprise only any one.

DESCRIPTION OF SYMBOLS 1 Vacuum cleaner 2 Vacuum cleaner main body 10 Electric blower 10a Suction port 11 Fan casing 11b Side surface 11b1 Lower flange part 12 Motor casing 13 Rotating shaft 20 Dust collector 30 Intake duct (2nd member (case))
30n opening (suction part)
35 Airtight member 40 Exhaust duct (first member (case))
45 Filter 46 Seal member 50 Elastic support means 54 Support member L Full length

Claims (6)

An electric blower, a case housing the electric blower, a suction portion provided in the case, a suction port provided in the electric blower and communicated with the suction portion, and the suction portion and the suction port. An electric vacuum cleaner comprising an airtight member interposed between the airtight member for maintaining airtightness in a substantially axial direction of the electric blower and an elastic support means provided separately from the airtight member and supporting the electric blower. And
The elastic support means supports the electric blower from a direction orthogonal to the rotation axis at a position closer to the airtight member than a central position of the entire length of the electric blower in the rotation axis direction. Vacuum cleaner. An electric blower, a case for housing the electric blower, a suction portion provided in the case, a suction port provided in the electric blower and communicating with the suction portion, and between the suction portion and the suction port An electric vacuum cleaner comprising: an airtight member interposed between the airtight member and maintaining airtightness in a substantially axial direction of the electric blower; and an elastic support means provided separately from the airtight member and supporting the electric blower. ,
The case includes a first member provided with a filter and a second member having the suction portion, and the first member and the second member are coupled via a seal member. ,
The elastic support means supports the electric blower from a direction orthogonal to the rotation axis at a position closer to the airtight member than a central position of the entire length of the electric blower in the rotation axis direction. Vacuum cleaner. An electric blower, a case for housing the electric blower, a suction portion provided in the case, a suction port provided in the electric blower and communicating with the suction portion, and between the suction portion and the suction port An electric vacuum cleaner comprising: an airtight member interposed between the airtight member and maintaining airtightness in a substantially axial direction of the electric blower; and an elastic support means provided separately from the airtight member and supporting the electric blower. ,
The electric blower is supported in the case in a posture in which the rotating shaft is in a vertical direction,
The elastic support means supports the electric blower from a direction orthogonal to the rotation axis at a position closer to the airtight member than a central position of the entire length of the electric blower in the rotation axis direction. Vacuum cleaner. It is a vacuum cleaner of any one of Claims 1-3,
The vacuum cleaner, wherein the elastic support means is supported by a support member. The vacuum cleaner according to any one of claims 1 to 4, wherein
The electric blower includes a motor casing that houses a rotor, and a fan casing that is formed in a larger diameter than the motor casing and houses the blower.
The vacuum cleaner, wherein the elastic support means supports the fan casing. It is a vacuum cleaner of any one of Claims 1-5,
The electric blower is supported by the elastic support means in the vicinity of a position corresponding to a vibration node.

Images