JP2017217190A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vacuum cleaner which allows a user to easily grasp a part to which warm air is blown, and temperature adjustment is also facilitated.SOLUTION: A vacuum cleaner comprises a suction head 30 which is rotatably connected to a main body 10, the main body 10 comprises: a fan motor 15 for sucking air 70 into inside, through the suction head 30; a heating part for heating the air 70 sucked into inside by the fan motor 15; and an outlet 23 for discharging the air 70 heated by the heating part to outside, the outlet 23 is formed on the suction head 30 side of the main body 10.SELECTED DRAWING: Figure 2

Description

  The present embodiment relates to a vacuum cleaner.

  There is a cleaner having a structure in which hot air generated by heating sucked air is applied to the surface of the object to be cleaned while sucking dust from the surface of the object to be cleaned. For example, Patent Document 1 describes a structure in which sucked air is heated and circulated on the surface of an object to be cleaned.

Japanese Unexamined Patent Publication No. 2016-43239

  However, according to the vacuum cleaner described in Patent Document 1, warm air is blown out from the lower surface of the integrally configured casing. Therefore, it is difficult for the user to grasp the location where the warm air is blown. Further, since the distance between the hot air outlet and the object to be cleaned is constant, it is difficult to properly adjust the surface temperature of the object to be cleaned.

  An object of the present embodiment is to provide a vacuum cleaner in which a user can easily grasp a place where hot air is applied and the temperature can be easily adjusted.

  According to one aspect of the present embodiment, the vacuum cleaner includes a suction head rotatably connected to a main body, the main body sucking air into the inside via the suction head; A heating unit that heats the air sucked in by the electric blower and a discharge port that discharges the air heated by the heating unit to the outside. The discharge port is formed on the suction head side of the main body. A vacuum cleaner is provided.

  According to the present embodiment, it is possible to provide a vacuum cleaner in which the user can easily grasp the location where the hot air hits and can easily adjust the temperature.

The perspective view which shows the upright state of the vacuum cleaner which concerns on embodiment. Sectional drawing of the vacuum cleaner which concerns on embodiment. The perspective view of the nonwoven fabric filter with which the cleaner concerning an embodiment is provided. It is explanatory drawing which shows a mode that warm air blows off from a discharge port during operation | movement of the vacuum cleaner which concerns on embodiment, (a) A storage state, (b) 1st use state, (c) 2nd use State. The exploded view of the suction head with which the cleaner concerning an embodiment is provided. FIG. 6 is a cross-sectional view of the suction head shown in FIG. 5. FIG. 6 is a top view of a hitting head provided in the suction head shown in FIG. 5. The perspective view which shows the upright state of the vacuum cleaner which concerns on embodiment. The side view which shows the use condition of the vacuum cleaner which concerns on embodiment. Sectional drawing of the suction head with which the cleaner concerning an embodiment is provided. The exploded view of the suction head with which the cleaner concerning an embodiment is provided. Sectional drawing of the vacuum cleaner which concerns on embodiment. It is explanatory drawing of the intake path for motor overheating prevention with which the cleaner concerning an embodiment is provided, (a) perspective view of the whole, (b) sectional view of the important section, (c) perspective view of the important section.

  Next, embodiments of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the relationship between the thickness and the planar dimensions, the ratio of the thickness of each layer, and the like are different from the actual ones. Therefore, specific thicknesses and dimensions should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships and ratios are included between the drawings.

  Further, the embodiments described below exemplify apparatuses and methods for embodying the technical idea of the present invention, and the embodiments of the present invention include the material, shape, structure, The layout is not specified as follows. Various modifications can be made to the embodiment of the present invention within the scope of the claims.

[Appearance of vacuum cleaner]
FIG. 1 is a perspective view illustrating an upright state (a state at the time of storage) of the cleaner 1 according to the embodiment. The vacuum cleaner 1 is a relatively small and light vacuum cleaner (for example, a futon cleaner) called a handy cleaner. As shown in FIG. 1, the main body 10 is formed in a substantially cylindrical shape. A suction head 30 having a swing mechanism is rotatably connected to one end side of the main body 10, and a U-shaped handle portion 50 is integrally formed on the other end side of the main body 10. When the user of the vacuum cleaner 1 cleans an object to be cleaned such as a futon, the user grips the handle 50 and tilts the main body 10 to an arbitrary angle, and moves the suction head 30 in the front-rear direction and the left-right direction. Hereinafter, each direction of “front-rear direction”, “left-right direction”, and “up-down direction” is considered based on the user of the cleaner 1 unless otherwise specified.

[Internal configuration of vacuum cleaner]
FIG. 2 is a cross-sectional view of the vacuum cleaner 1 according to the embodiment. Hereinafter, the internal configuration of the vacuum cleaner 1 according to the embodiment will be described with reference to FIG.

  The main body 10 includes a substantially cylindrical main body housing 10a. A U-shaped handle portion 50 is integrally formed on the upper portion of the main body housing 10a. An air inlet 11b is formed in a substantially central portion at the lower end of the main body housing 10a, and a cylindrical duct cover 11 is extended downward.

  Inside the duct cover 11, a dust sensor 11a for detecting dust is provided. The dust sensor 11a includes a light emitting element and a light receiving element, and light emitted from the light emitting element is received by the light receiving element on the opposite side across the duct cover 11. The passage of dust can be detected by determining the presence or absence of this light reception. The position of the dust sensor 11a is not limited to the inside of the duct cover 11 and may be anywhere as long as dust passes.

  The motor chamber 15c incorporates a fan motor 15 that is an electric blower. The fan motor 15 includes a suction fan 15a and a suction motor 15b. When the suction motor 15b drives the suction fan 15a, a negative pressure is generated inside the cleaner 1 and sucks dust. Although the drive of the fan motor 15 is performed by PWM control, other control methods may be adopted depending on the type of the fan motor 15.

  An annular nonwoven fabric filter 17 is provided above the fan motor 15 via a motor rubber restraint 16. The upper part of the nonwoven fabric filter 17 is closed by a filter cap 18, and a discharge passage 19 is provided from the side of the nonwoven fabric filter 17 through the back side of the main body housing 10 a to the lower end outlet 23. A control board 12 is disposed in front of the discharge channel 19 with a partition wall W1 therebetween. The control board 12 is a control unit that controls each part of the cleaner 1. The space in which the control board 12 is accommodated is separated from the discharge flow path 19 by the partition wall W1, and is separated from the motor chamber 15c by the partition wall W2 inside the partition wall W1. In other words, the air 70 is prevented from entering the control board 12 from both the discharge flow path 19 and the motor chamber 15c.

  The opening of the main body housing 10 a formed below the fan motor 15 is closed by a conical dust collection filter 13. The dust collection filter 13 is formed by insert-molding a mesh filter into a resin frame, and separates the air 70 and dust (the description of the mesh filter is omitted). The dust collection filter 13 may be a HEPA (High Efficiency Particulate Air) filter.

  A transparent dust cup 22 is attached in front of the dust collection filter 13. The dust cup 22 collects dust and the like sucked from the suction port 33. By pressing a release button B (see FIG. 1) provided on the side surface of the dust cup 22, the dust cup 22 can be removed from the main body 10 and the dust accumulated therein can be discarded.

  The suction head 30 includes a head housing 30a having a vertically divided structure. A rotation axis A is provided along the longitudinal direction of the head housing 30a, and is supported at one end of the duct cover 11 so as to be able to swing around the rotation axis A within a certain angle range. A suction port 33 is provided on the lower surface of the head housing 30a, and a hitting mechanism including a hitting head 31, a hitting motor 32, and the like is provided in front of the suction port 33.

  The suction port 33 is provided at substantially the center of the lower surface of the suction head 30 in order to suck dust from the surface to be cleaned. The structure of the suction port 33 may be a shape simply having an opening as conventionally employed, or may have a rotating member such as a brush inside the suction port 33. By having the rotating member, dust on a surface to be cleaned, in particular, a long haired object such as a carpet can be scraped out, and more dust can be sucked in.

  On the front surface of the handle portion 50, an operation button 51 operated by a user with a fingertip and a lamp 52 indicating the operation result are provided. When the operation button 51 is pressed, the suction motor 15b is activated and the suction fan 15a rotates. When the suction fan 15 a rotates, dust is sucked into the dust cup 22 through the duct cover 11. Each time the operation button 51 is pressed, the number of rotations of the suction motor 15b changes, and the operation mode can be switched in three stages: “weak”, “standard”, and “turbo”. Of course, a plurality of operation buttons 51 corresponding to each operation mode may be provided. If a convex part or a concave part is provided on the lower side of the handle part 50 so that the user's finger is applied, the position of the user can be guided to a certain position, and the operation button 51 can be pressed. It becomes easier.

  A power cord 53 is pulled out from the handle portion 50 and connected to an outlet. If a rechargeable battery pack is attached to the inside of the main body housing 10a, it can be realized as a cordless cleaner using the same as a power source.

[Hot air blowing mechanism]
As already explained, according to the conventional vacuum cleaner, it is difficult for the user to grasp the location where the hot air is blown. Further, since the distance between the hot air outlet and the object to be cleaned is constant, it is difficult to properly adjust the surface temperature of the object to be cleaned.

  Therefore, the vacuum cleaner 1 according to the embodiment includes a warm air blowing mechanism that generates warm air using waste heat of the suction motor 15b and blows it toward an object to be cleaned such as a futon. Specifically, a hot air outlet 23 is provided on the suction head 30 side of the main body 10. Since the warm air blows out from the main body 10 side even though it is a swing head, the user can easily grasp the place where the hot air hits sensuously and can easily adjust the temperature.

  Hereinafter, the flow of the air 70 in the cleaner 1 will be described with reference to FIG. First, the air 70 sucked from the suction port 33 of the suction head 30 flows into the dust cup 22 through the duct cover 11 and the suction port 11 b of the main body 10, and dust in the air 70 is collected by the dust collection filter 13. Is removed. The air 70 from which the dust has been removed flows into the motor chamber 15c, passes through the surface of the suction motor 15b, and is warmed by the waste heat of the suction motor 15b. The warmed air 70 flows through the nonwoven fabric filter 17 provided on the downstream side of the suction motor 15b to the discharge passage 19 and is blown out from the discharge port 23 toward the object to be cleaned. Since the temperature of the air 70 blown out from the discharge port 23 is about 40 to 50 ° C., an object to be cleaned such as a futon can be warmed and the humidity can be reduced.

  FIG. 3 is a perspective view of the nonwoven fabric filter 17 included in the vacuum cleaner according to the embodiment. As shown in FIG. 3, the nonwoven fabric filter 17 is an annular pleated filter. Since the pleated filter is an accordion-like filter, a filter having as large a surface area as possible can be mounted in a small space. A disc-shaped plate portion is integrally provided on the upper portion 17c of the nonwoven fabric filter 17, and the upper portion 17c is closed. The air 70 flowing in from the opening of the bottom portion 17 a of the nonwoven fabric filter 17 passes through the outer periphery 17 b of the nonwoven fabric filter 17, and fine dust is removed, and then flows into the discharge channel 19. According to such a configuration, exhaust air from the fan motor 15 can be purified by the non-woven fabric filter 17 that is finer than the dust collection filter 13, so that clean air 70 can be blown onto the object to be cleaned.

  Drawing 4 is an explanatory view showing signs that warm air is blown out from discharge mouth 23 during operation of cleaner 1 concerning an embodiment, (a) is a stowed state, and (b) is the 1st use state. , (C) shows a second use state. In the following description, reference numeral 70 is also used for the warm air blown from the discharge port 23.

  As shown in FIG. 4A, in the housed state (upright state), the angle formed between the main body 10 and the suction head 30 is approximately 90 °, and the hot air 70 is perpendicular to the object to be cleaned from the discharge port 23. Is sprayed on. The distance from the discharge port 23 to the object to be cleaned is about the length of the duct cover 11. When the main body 10 is erected on the suction head 30, the center of gravity of the main body 10 is positioned within the projection area of the suction head 30.

  As shown in FIG. 4B, the first use state is a state where the main body 10 is tilted backward from the housed state, and the lock mechanism (described later) of the swing head is released. Here, the angle formed by the main body 10 and the suction head 30 is about 45 °, and the hot air 70 is blown from the discharge port 23 to the object to be cleaned at an angle of about 45 °. The user can adjust the location where the hot air 70 is applied while operating the handle portion 50 and swinging his / her head to an appropriate angle. Since the discharge port 23 is formed behind the rotation axis A, the distance from the discharge port 23 to the object to be cleaned is shorter than the storage state of FIG. As a result, the surface temperature of the object to be cleaned can be increased, and the humidity can be further reduced.

  As shown in FIG. 4C, the second use state is a state where the main body 10 is most deeply tilted backward. In the second use state, the angle formed between the main body 10 and the suction head 30 is approximately 10 °, and the hot air 70 is directly blown against the object to be cleaned from the discharge port 23 close to the surface to be cleaned. As a result, the surface temperature of the object to be cleaned can be increased, and the humidity can be further reduced. When the discharge port 23 swings his / her head to substantially the same height as the lower surface of the suction head 30, the rotation of the swing head may be restricted.

  As described above, the vacuum cleaner 1 according to the embodiment is the vacuum cleaner 1 including the suction head 30 that is rotatably connected to the main body 10, and the main body 10 draws the air 70 through the suction head 30. A fan motor 15 that sucks in the interior, a heating unit that heats the air 70 sucked in by the fan motor 15, and a discharge port 23 that discharges the air 70 heated by the heating unit to the outside. Is formed on the suction head 30 side of the main body 10. Thereby, since the warm air 70 is discharged | emitted from the position close | similar to the user by the side of the main body 10, a user can grasp | ascertain the location where the warm air 70 hits easily, and adjustment of temperature also becomes easy.

  A suction head 30 is connected to one end side of the main body 10, and a handle portion 50 is formed on the other end side of the main body 10. That is, since the discharge port 23 is formed on the side opposite to the handle portion 50, there is an effect that the hot air 70 does not directly hit the user.

  The suction head 30 is connected to the main body 10 so as to be rotatable about a rotation axis A along the longitudinal direction of the suction head 30, and the discharge port 23 is located behind the rotation axis A. Is formed. Thereby, since it is easy for the user to visually recognize the discharge port 23, it is easier to grasp the location where the hot air 70 is hit, and the temperature can be adjusted more easily.

  The heating unit is the surface of the suction motor 15 b constituting the fan motor 15, and the air sucked into the main body 10 flows along at least a part of the surface of the suction motor 15 b and is discharged to the discharge port 23. A flow path 19 is formed. Thereby, since the warm air 70 is generated using the motor waste heat, there is no need to separately provide a heating unit for generating the warm air 70, which is advantageous in reducing the size and cost.

  The main body 10 includes a dust collection filter 13 upstream of the fan motor 15 and a non-woven fabric filter 17 that is finer than the dust collection filter 13 downstream of the fan motor 15. Thereby, it is possible to purify the exhaust of the fan motor 15 and blow clean air 70 onto the object to be cleaned.

[Tapping mechanism]
The main purpose of conventional vacuum cleaners has been to suck dust on the floor, but recently, the object to be cleaned is used to suck dust and mite dung on bedding such as futons. Various vacuum cleaners with a hitting mechanism that vibrates the drum have been proposed. Since dust, mite dung, etc. cause allergies, it is desired to increase the tapping force. Therefore, the vacuum cleaner 1 according to the embodiment employs the following tapping mechanism in order to further increase the tapping force.

  FIG. 5 is an exploded view of the suction head 30 provided in the vacuum cleaner 1 according to the embodiment. Here, only main members constituting the hitting mechanism are illustrated. As shown in FIG. 5, the tapping motor 32 to which the eccentric disk 39 is attached is accommodated in the motor case 40, and the motor case 40 and the tapping head base 37 are directly connected by screws (not shown). Of course, a connection method other than screwing may be used. On the other hand, an elastic body (packing) 35 is fitted outside the two support portions 35a protruding from the upper surface of the hitting head 31, and a groove formed on the outer periphery of the elastic body 35 is fitted into the two openings 35b of the head housing 30a. The support portion 35a and the hitting head base 37 are fixed by screws 38 so as to contact each other. Thus, the motor case 40, the hitting head base 37, and the hitting head 31 are elastically supported by the head housing 30a as a whole.

  FIG. 6 is a cross-sectional view of the suction head 30 shown in FIG. As shown in FIG. 6, a hitting motor case 40 is disposed between two support portions 35a protruding from the upper surface of the hitting head 31, and the weight of the hitting motor 32 is supported at two locations. Since the eccentric disk 39 is attached eccentrically to the rotation shaft of the tapping motor 32, when the tapping motor 32 is rotated, vibration according to the rotation speed can be generated. The vibration corresponding to the rotation speed is transmitted to the hitting head 31 via the hitting head base 37, and the hitting head 31 is vibrated up and down. Since a plurality of protrusions are provided on the lower surface of the hitting head 31, dust and the like in the back of the object to be cleaned can be effectively hit out. In order to prevent a so-called chatter noise from being generated during vibration, each part may be provided with a member that absorbs vibration. As the member that absorbs vibration, rubber or polyurethane-based material can be used.

  FIG. 7 is a top view of the hitting head 31 provided in the suction head 30 shown in FIG. As shown in FIG. 7, the tapping head 31 has a bilaterally symmetric shape as if the patterns of tapping two futons are connected to each other when viewed from above. It is formed wider as it goes to the end, and many openings 31a are formed. The vicinity of the support portion 35a plays a role like a futon beating handle and has a structure in which a large tapping force can be obtained at the end of the tapping head 31.

  As described above, the vacuum cleaner 1 according to the embodiment is the vacuum cleaner 1 including the hitting mechanism that vibrates the hitting head 31 by the vibration of the motor with the eccentric disk, and the end of the hitting head 31 is formed wide. doing. Thereby, a big vibration is acquired as it goes to an edge part, and it becomes possible to raise a tapping force.

  The hitting head 31 has a plurality of openings 31a. As a result, there are more portions where the hitting head 31 hits the object to be cleaned, such as a futon, and more, so that the contact pressure is increased, and a large amount of dust can be hit from the inside of the object to be cleaned.

  Moreover, the support part 35a of the hitting head 31 is formed in two places, and the hitting motor case 40 is disposed between the two support parts 35a. Thereby, since the weight of the tapping motor 32 is directly transmitted to the tapping head 31 through the two support portions 35a, the tapping force can be increased, and the dust floating effect can be increased.

[Dust amount display mechanism]
Conventional vacuum cleaners have mainly been aimed at sucking up dust on the floor surface, but recently, various display mechanisms for understanding the amount of sucked dust and the like have been proposed. In order to efficiently perform cleaning, it is desirable that the amount of dust can be easily grasped. Therefore, the vacuum cleaner 1 according to the embodiment employs the following dust amount display mechanism in order to facilitate grasping of the dust amount.

  FIG. 8 is a perspective view showing an upright state of the cleaner 1 according to the embodiment. Here, for explaining the dust amount display mechanism, a state in which members such as the dust cup 22 and the dust collection filter 13 are removed is shown. As shown in FIG. 8, a dust amount display unit 21 that displays the dust amount is disposed on the back side of the dust cup 22. Since the conical dust collection filter 13 is attached in front of the dust amount display unit 21, two dust amount display units 21 are provided at a lower position that does not face the dust collection filter 13.

  The dust amount display unit 21 includes a substrate on which light emitting means is mounted and a light guide plate such as an acrylic plate that covers the substrate. The light emitting means is, for example, red and green light emitting diodes (LEDs). A plurality of colors can be created by mounting light emitting diodes that emit a plurality of colors and adjusting the brightness of each light emitting diode. Furthermore, since the light of the light emitting diode is emitted from the entire light guide plate by covering with a light guide plate having a light diffusing function, the entire transparent dust cup 22 emits light and visibility is improved.

  A dust sensor 11a for detecting dust is provided inside the duct cover 11, and the light emission color of the dust amount display unit 21 changes according to the amount of dust detected by the dust sensor 11a. Such display control is realized by the control board 12. The control board 12 may cause the dust amount display unit 21 to emit red light when there is a lot of dust, and may change to red, yellow, and green as the dust decreases. Thereby, when the same place is cleaned, it becomes possible to visually feel how much dust is reduced.

  FIG. 9 is a side view showing a usage state of the vacuum cleaner 1 according to the embodiment. As shown in FIG. 9, the dust cup 22 is a large member provided in the main body 10 and is disposed on the front side that is easy for the user to see, so that the amount of dust can be easily grasped. In particular, when the main body 10 is turned down, the entire dust cup 22 can be seen well, which is effective when cleaning bedding such as a futon.

  In addition, although the transparent dust cup 22 is illustrated here, the dust cup 22 may be a semi-transparent material such as a smoked material or a material provided with unevenness. Making the dust cup 22 translucent increases the light diffusion effect and is more effective.

  As described above, the vacuum cleaner 1 according to the embodiment is a vacuum cleaner 1 including a dust amount display mechanism that displays the amount of dust, and the dust cup 22 is made transparent or translucent, and the dust cup 22 is disposed on the back side. A dust amount display unit 21 for displaying the dust amount is arranged. Thereby, since the whole dust cup 22 can be light-emitted with the color according to the amount of dust, grasping | ascertaining of the amount of dust can be facilitated. In addition, there is an effect that the amount of dust accumulated in the dust cup 22 can be easily grasped.

[Lock mechanism of swing head]
FIG. 10 is a cross-sectional view of the suction head 30 provided in the vacuum cleaner 1 according to the embodiment, and FIG. 11 is an exploded view thereof. Hereinafter, the lock mechanism of the swing head provided in the cleaner 1 according to the embodiment will be described with reference to FIGS. 10 and 11.

  As shown in FIGS. 10 and 11, a rotation axis A is provided along the longitudinal direction of the head housing 30a, and the head 10 and the suction head 30 are swung in an angle range of approximately 10 ° to 90 °. It is possible. Specifically, a plate-like protrusion 43 that extends outward from the shaft portion 42 of the duct cover 11 is provided, and a recess is formed at the tip of the protrusion 43. The head housing 30a is provided with a stopper 44 having elasticity. Only when the main body 10 stands upright with respect to the suction head 30 (only when the angle formed between the main body 10 and the suction head 30 is approximately 90 °), the protrusion 43 and the stopper 44 face each other, and the stopper 44 is bent. And fit into the recess of the protrusion 43. The rotation is restricted to an angle range larger than 90 °. According to such a structure, the vacuum cleaner 1 can be made to stand in a stable state with the suction head 30 installed on the floor surface.

  As described above, the vacuum cleaner 1 according to the embodiment is a vacuum cleaner 1 having a swinging head locking mechanism, and is locked only when the main body 10 stands upright with respect to the suction head 30. . Therefore, it is possible to swing in a certain angle range except when standing upright, and it is possible to provide a user-friendly vacuum cleaner 1.

[Motor overheat prevention mechanism]
By the way, if the suction force of the vacuum cleaner 1 is too strong, there is a possibility that the temperature of the fan motor 15 rises too much in the dust collection filter 13. For this reason, when a thermistor is attached to the fan motor 15 and it is detected that the temperature has reached a certain level, control is performed so that it automatically operates at “weak” even when operating at “standard” or “turbo”. Is desirable.

  However, when it controls in this way, the rotation speed of the fan motor 15 will fall and suction | attraction force will fall. Therefore, the vacuum cleaner 1 according to the embodiment employs the following motor overheat prevention mechanism in order to prevent the temperature of the fan motor 15 from excessively rising.

  FIG. 12 is a cross-sectional view of the vacuum cleaner 1 according to the embodiment. As shown in FIG. 12, an intake path 71 for preventing motor overheating may be provided separately from the normal dust suction path (corresponding to the arrow 70). Although the specific structure of the intake path 71 is not limited, it is preferable that the intake path 71 is provided downstream of the dust collection filter 13 and upstream of the intake port of the fan motor 15. If such an intake path 71 is provided, when dust is stuck to the dust collection filter 13, the amount of air sucked from the intake path 71 is increased and the temperature of the fan motor 15 is prevented from excessively rising. be able to.

  FIG. 13 is an explanatory diagram of an intake passage 71 for preventing motor overheating provided in the vacuum cleaner 1 according to the embodiment. FIG. 13A is a perspective view of the whole, and FIG. FIG.13 (c) is a perspective view of the principal part. FIG. 13A shows a state in which the dust cup 22 and the dust collection filter 13 are removed.

  As shown in FIG. 13, there is a gap between the semicircular cover 10b attached to the front side of the upper portion of the dust cup 22 and the main body housing 10a. The gap between the dust cups 22 may be used as an intake passage 71 for preventing motor overheating. In this example, the main body housing 10a is provided with slits S1 and S2 so as to face the dust collection filter 13. Further, a filter cover 13a is provided on the upstream side of the fan motor 15 so as to face the dust collection filter 13, and a slit 13b is provided on a side surface of the filter cover 13a.

  As a result, the draft air sucked from the gap of the dust cup 22 flows to the front of the motor chamber 15c, passes through the slits S1 and S2 provided in the main body housing 10a, and further provided in the side surface of the filter cover 13a. The air flows through the motor chamber 15c together with the air 70 (see FIG. 12) from the normal dust suction path through 13b. Since the gap between the dust cups 22 is only on the side opposite to the object to be cleaned such as a futon (the front side of the main body 10), clean air can be taken in.

  As described above, the vacuum cleaner 1 according to the embodiment is the vacuum cleaner 1 including the motor overheat prevention mechanism that prevents the temperature of the fan motor 15 from excessively rising, and the motor is separate from the normal dust suction path. An intake passage 71 for preventing overheating is provided. Thereby, since it can prevent that the temperature of the fan motor 15 rises too much, the problem that attraction | suction power falls will not arise.

  Further, a gap between the dust cups 22 on the front side of the main body 10 is used as the intake passage 71 for preventing motor overheating. Thereby, since clean air can be taken in, it is possible to prevent motor overheating efficiently.

  Although not particularly mentioned in the above description, the main body 10 and the suction head 30 may or may not be detachable. In other words, as long as the main body portion and the head portion can be grasped separately, this embodiment can be applied.

  Of course, various protection functions provided in a general vacuum cleaner may be provided. For example, a bimetal is provided in the vicinity of the fan motor 15, and the operation is completely stopped when abnormal heat is generated.

[Other embodiments]
As described above, the embodiments have been described. However, it should not be understood that the description and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art.

  As described above, the present invention naturally includes various embodiments not described herein. Therefore, the technical scope of the present invention is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.

  The vacuum cleaner according to the present embodiment can be used for general vacuum cleaners. In particular, it is effective when applied to a relatively small and light vacuum cleaner called a handy cleaner (for example, a futon cleaner).

DESCRIPTION OF SYMBOLS 1 ... Vacuum cleaner 10 ... Main body 13 ... Dust collection filter (1st filter)
15 ... Fan motor (electric blower)
15b ... Suction motor (heating unit)
17 ... Nonwoven fabric filter (second filter)
DESCRIPTION OF SYMBOLS 19 ... Discharge flow path 23 ... Discharge port 30 ... Suction head 50 ... Handle part 70 ... Air, warm air

Claims (5)

A vacuum cleaner comprising a suction head pivotally connected to the body,
The body is
An electric blower for sucking air into the inside via the suction head;
A heating unit for heating the air sucked into the interior by the electric blower;
A discharge port for discharging the air heated by the heating unit to the outside,
The discharge port is formed on the suction head side of the main body. The suction head is connected to one end side of the main body,
The vacuum cleaner according to claim 1, wherein a handle portion is formed on the other end side of the main body. The suction head is connected to the main body so as to be rotatable around a rotation axis along the longitudinal direction of the suction head;
The vacuum cleaner according to claim 1, wherein the discharge port is formed behind the rotation shaft. The heating unit is a surface of a motor constituting the electric blower,
The vacuum cleaner according to any one of claims 1 to 3, wherein air sucked into the main body flows along at least a part of the surface of the motor, and a discharge flow path reaching the discharge port is formed. The said main body is equipped with a 1st filter upstream from the said electric blower, and is provided with a 2nd filter finer than the said 1st filter downstream from the said electric blower. Vacuum cleaner.

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