KR200448494Y1 - Electric vacuum cleaner - Google Patents

Abstract

The vacuum cleaner according to the present invention includes a ultraviolet generator for irradiating ultraviolet to the surface to be cleaned, and a safety device for turning on / off the power of the ultraviolet generator. The safety device is provided with a wheel guide coupled to the housing, a wheel which is installed to be movable up and down on the wheel guide, and which rises when it comes in contact with the surface to be cleaned, and which falls down by its own weight when falling off the surface to be cleaned, and which is turned on or off by the movement of the wheel. It includes a micro switch having an operating member for interlocking movement. When the vacuum cleaner according to the present invention is lifted from the surface to be cleaned, the wheel is lowered by its own weight and the microswitch is turned off to cut off the power supply to the UV generator.

Description

Electric vacuum cleaner

The present invention relates to a vacuum cleaner, and more particularly to a vacuum cleaner having a sterilization function.

The vacuum cleaner uses the suction power generated by the fan motor to suck the outside air to filter foreign substances such as dust contained in the sucked air with a filter, and then discharges the removed air to the outside to clean the surface to be cleaned. Device.

In general, the vacuum cleaner includes a housing in which the interior is divided into a filter mounting chamber and a fan motor installation chamber, a filter installed in the filter mounting chamber, and a fan motor installed in the fan motor installation chamber. The filter is detachably installed in the filter compartment to remove foreign substances collected therein.

These vacuum cleaners are classified into canister type, upright type, drum type, and handy type according to the shape. In the canister type, the suction part provided with the intake port is connected to the housing through a flexible connection pipe and cleans the surface to be cleaned only by the suction power of the fan motor without a rotating brush. The upright type is installed at the lower part of the housing in which the rotating brush is installed, which is advantageous for cleaning the surface to be cleaned of foreign substances such as carpet. The drum type is bulky and large enough to clean a large space such as a factory or a workshop. The handy type is small and can be used by a user with one hand. Do.

Recently, an electric vacuum cleaner with sterilization function has been introduced in addition to a cleaning function for inhaling and removing foreign substances. A vacuum cleaner having a sterilizing function removes bacteria and pests by irradiating ultraviolet rays to the surface to be cleaned or inhaled air and has an ultraviolet lamp for generating ultraviolet rays. Since ultraviolet rays are harmful to the human body, ultraviolet lamps are installed in the lower part of the vacuum cleaner in contact with the surface to be cleaned so that the ultraviolet rays can be emitted only to the surface to be cleaned during the operation of the vacuum cleaner.

By the way, in the conventional vacuum cleaner having a sterilizing function, the ultraviolet rays generated from the ultraviolet lamp are emitted only toward the surface to be cleaned when the bottom surface faces the surface to be cleaned. It can be radiated to. Therefore, the conventional vacuum cleaner having a sterilization function is a risk that the ultraviolet rays are radiated in various directions due to carelessness or mischief of the user, which may cause fatal harm to people or pets.

The present invention is to solve the above problems, and when the vacuum cleaner is lifted or flipped from the surface being cleaned, the UV lamp automatically turns off to provide an electric vacuum cleaner that can reduce the risk of ultraviolet radiation to people or pets. There is a purpose.

The vacuum cleaner according to the present invention for achieving the above object is provided with an ultraviolet generating device for irradiating ultraviolet to the surface to be cleaned, and a safety device for turning on / off the power of the ultraviolet generating device, The safety device is provided with a wheel guide, a wheel which is installed to be movable up and down on the wheel guide and rises when it comes in contact with the surface to be cleaned, and falls down by its own weight when dropped from the surface to be cleaned, and the on / off by the movement of the wheel. It includes a microswitch having an operating member that cooperates with the movement of the wheel.

In the present invention, the wheel guide is provided with a guide groove extending in the vertical direction, the wheel is provided with a wheel shaft that is inserted into the guide groove so as to move and move up and down with the wheel to operate the operating member. Can be.

The micro switch may be set to maintain an on state when the wheel shaft is located in an area of a predetermined height or more of the guide groove.

In addition, the operation member is disposed outside the wheel guide so that one end of the fixed end is located below the guide groove and the other end of the free end is located above the guide groove, and the wheel shaft is operated when the wheel is raised. The micro switch is turned on by pressing the other end of the member, and when the wheel is lowered, the pressing force of the operating member is released and the micro switch may be turned off.

In addition, the actuating member is disposed outside the wheel guide such that one end, which is a fixed end and the other end, which is a free end, is positioned above the guide groove but the other end is adjacent to the guide groove than the one end. When the wheel shaft presses the other end of the operating member, the micro switch is turned on. When the wheel is lowered, the pressing force of the operating member is released, and the micro switch may be turned off.

In addition, a first magnet is installed in the actuating member, and a second magnet corresponding to the first magnet is installed in one of the wheel and the wheel shaft, and the actuating member is provided with the first and the second when the wheel is lowered. It can be operated by magnetic interaction of two magnets.

In addition, a magnet is installed on any one of the operating member and the wheel, and the other one of the operating member and the wheel that is not provided with the magnet is made of a material that generates attraction force between the magnet and the operation. The member may be operated by the magnetic force of the magnet when the wheel is raised and lowered.

The above and other related objects and novel features of the present invention will become more apparent from the following detailed description and the preferred embodiments associated with the accompanying drawings.

When the vacuum cleaner according to the present invention is lifted from the surface to be cleaned, the wheel is lowered by its own weight and the microswitch is turned off to cut off the power supply to the UV generator. Therefore, even when the vacuum cleaner is lifted from the surface to be cleaned during operation, it is difficult for ultraviolet rays to be emitted to people or pets, so that the use stability is improved and the reliability of the product is improved.

Hereinafter, an electric vacuum cleaner according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 and 2 are a side cross-sectional view and a bottom perspective view schematically showing a vacuum cleaner according to an embodiment of the present invention, Figure 3 is a perspective view schematically showing a safety device of the vacuum cleaner according to an embodiment of the present invention.

As shown in Figure 1 and 2, the vacuum cleaner 100 according to an embodiment of the present invention, the housing 110 to form an appearance, and the foreign matter contained in the air sucked into the housing 110 The first and second filters 131 and 133 for filtering, the fan motor 136 for generating a vacuum pressure in the housing 110, the ultraviolet generating unit 140 for generating ultraviolet rays, and the ultraviolet rays. And a safety device 150 for turning on / off the power of the generator 140. Here, the rest of the configuration except for the safety device 150 is the same as the configuration of the vacuum cleaner disclosed in Korea Patent No. 10-661619 (registered December 19, 2006) registered and filed by the applicant, the safety device Detailed description of the configuration other than the 150 may be omitted.

The interior of the housing 110 includes a filter mounting chamber 111 in which the first filter 131 is mounted, and a fan motor installation chamber 112 in which the fan motor 136 is installed. The filter mounting chamber 111 and the fan motor mounting chamber 112 are interconnected to allow the flow of air so that the air sucked into the housing 110 passes through the filter mounting chamber 111 and the fan motor mounting chamber 112. Flow).

In the front of the housing 110 is provided with an intake portion 114 having a plurality of inlets (113a, 113b) for sucking the outside air, a plurality of exhaust ports for discharging the air to the rear of the housing 110 An exhaust unit 117 having 117 is provided. The plurality of intake ports 113a and 113b are connected to the filter mounting chamber 111 through the air flow path 115, and the plurality of exhaust ports 117 are connected to the fan motor installation chamber 112. When the fan motor 136 is operated, the air sucked into the plurality of inlets 113a and 113b is introduced into the filter mounting chamber 111 through the air flow path 115. In addition, the air introduced into the filter mounting chamber 111 passes through the first filter 131 to the fan motor installation chamber 112 and then is discharged to the outside of the housing 110 through the plurality of exhaust ports 117. .

The intake unit 114 is provided with a plurality of adsorption preventing ribs 115 and the striking device 120. The plurality of adsorption preventing ribs 115 are for preventing the intake openings 113a and 113b from being blocked by the flexible cleaning surface such as a blanket, a bed cover, a carpet, a curtain, and clothing. If the surface to be cleaned is in close contact with the intake vents 113a and 113b and the intake vents 113a and 113b are blocked, the cleaning operation becomes cumbersome and the fan motor 136 is overloaded, thereby shortening the life of the vacuum cleaner 100. Problems may arise. The plurality of adsorption prevention ribs 115 ensure a space for air to be sucked in between when the surface to be cleaned is sucked toward the inlet port 113b so that the inlet port 113a and 113b are not completely blocked.

The striking device 120 strikes the surface to be cleaned to separate foreign matter stuck to the surface to be cleaned from the surface to be cleaned, and separates the surface to be cleaned from the inlets 113a and 113b. The striking device 120 includes a striking plate 121 for striking the surface to be cleaned and a vibration motor 122 for operating the striking plate 121.

An outer upper portion of the housing 110 is provided with an operation unit 118 for operating the vacuum cleaner 100 and a handle 119 that the user can hold by hand. The operation unit 118 is provided with an operation button (not shown) and a display window (not shown) capable of displaying the state of the vacuum cleaner 100. A power cable 124 for applying external power is connected to the rear of the housing 110.

The first and second filters 131 and 133 are used to filter out foreign substances such as dust, bacteria, pests, and the like contained in the air sucked into the housing 110, and the first filter 131 is a filter mounting chamber ( It is detachably attached to 111, and the 2nd filter 133 is detachably attached to the exhaust part 117 outer side. The first and second filters 133 are provided with first and second filter members 132 and 134 for filtering out foreign substances. The second filter member 134 has a denser structure than the first filter member 132, so that the fine foreign matter not filtered out of the first filter member 132 is filtered out by the second filter member 134. Then, the hot air generated from the fan motor 136 is supplied to the second filter 133 to kill the bacteria or pests filtered by the second filter member 134. The second filter 133 is provided with a grill portion 135 through which the air from which foreign substances have been removed is discharged.

The fan motor 136 includes a motor (not shown) operated by an external power source, a blowing fan (not shown) rotating at a high speed by the motor, and a case 137 surrounding the motor and the blowing fan. When the motor is operated, the air passing through the first filter 131 flows into the case 137 through the inlet 138 in front of the case 137, and is then removed through the opening 139 around the case 137. 2 flows to filter 133.

The ultraviolet generator 140 includes an ultraviolet lamp 141 for generating ultraviolet rays and is installed in the intake unit 114. The ultraviolet lamp 141 is positioned above the intake port 113a, and the ultraviolet rays generated by the ultraviolet lamp 141 are radiated toward the intake ports 113a and 113b. Therefore, the ultraviolet rays generated by the ultraviolet lamp 141 during the cleaning operation are radiated to the surface to be cleaned through the inlets 113a and 113b to sterilize the air sucked through the surface to be cleaned and the inlets 113a and 113b.

Three safety devices 150 are provided to turn on / off the power of the ultraviolet light generating device 140 at the bottom of the housing 110. Each safety device 150 is adjacent to the wheel guide 151, the wheel 153 is installed in the wheel guide 151 so as to slide up and down, and the wheel 153 to be on / off in conjunction with the wheel 153 It includes a micro switch 155 is installed.

As shown in FIG. 3, the wheel guide 151 is fixed to the lower portion of the housing 110 and supports the wheel 153 to rotate. The wheel shaft 154 is installed at the rotation center of the wheel 153, and the wheel guide 151 is provided with a guide groove 152 extending in the vertical direction so that the wheel shaft 154 is inserted and slides. Both ends of the wheel shaft 154 protrude to both sides of the wheel 153, and one end of the wheel shaft 154 protrudes out of the wheel guide 151 provided with the micro switch 155 through the guide groove 152. The wheel 153 is raised from the wheel guide 151 together with the wheel shaft 154 in contact with the surface to be cleaned when the housing 110 is placed on the surface to be cleaned, and the wheel shaft 154 by its own weight when the housing 110 is lifted from the surface to be cleaned. ) And descends from the wheel guide 151.

The micro switch 155 controls the power supply to the ultraviolet ray generator 140 according to the on / off state. The micro switch 155 has a body 156 fixed to the housing 110, an operation member 157 installed on an outer side of the body 156, and a body 156 to interlock with the operation member 157. It includes an on / off button 158 is provided to protrude to one side. The inside of the body 156 is provided with a plurality of contacts (not shown) which are controlled by the operation of the on / off button 158. The on / off button 158 is elastically supported to protrude a certain height to the outside of the body 156. The on / off button 158 is inserted into the body 156 at regular intervals when pressed under an external force, and is returned to its original position when the pressing force is released.

The operation member 157 is one end 157a is a fixed end fixed to one side of the body 156, the other end 157b is a free end that can be moved at regular intervals. The operating member 157 is pushed by the wheel shaft 154 when the wheel shaft 154 rises along the guide groove 152 and moves in the direction in which the other end 157b approaches the body 156, and the wheel shaft 154 is moved. When descending along the guide groove 152, the pressing force is released and the other end 157b is returned to its original position away from the body 156. The actuating member 157 may be installed in the body 156 so that the body itself is elastically deformed, and the one end 157a is rotatably coupled to the body 156 and returned to its original position by the on / off button 158. 156 may be installed.

Since the microswitch 155 is the same as that commonly known, the detailed description of the on / off button 158, the circuit structure inside the body 156, and the principle of operation are omitted.

In the present embodiment, the portion that substantially turns on / off the microswitch 155 is shown and described as the on / off button 158, but in the vacuum cleaner 100 according to the present invention, the microswitch 155 is turned on. It may be turned on / off by the movement of the operating member 157 without the / off button 158. That is, one operating member having both the function of the operating member 157 that interlocks with the movement of the wheel 153 and the function of the on / off button 158 that intercepts the contact is installed over the inside and outside of the body 156. The configuration is also possible.

Three safety devices 150 having such a configuration operate simultaneously to control the power supply to the ultraviolet generating device 140. That is, when the housing 110 is in contact with the surface to be cleaned and all of the microswitches 155 provided in the three safety devices 150 are in an on state, power is supplied to the ultraviolet lamp 141, and a part of the housing 110 is prevented. If one of the micro switches 155 is turned off by the cleaning surface, the power supply to the ultraviolet lamp 141 is cut off.

Hereinafter, with reference to the accompanying drawings will be described the operation of the vacuum cleaner 100 according to an embodiment of the present invention.

During the cleaning operation, when power is supplied to the fan motor 136 and the ultraviolet ray generator 140 while the housing 110 is placed on the surface to be cleaned, the ultraviolet rays generated from the ultraviolet lamp 141 are inlet 113a and 113b. Radiated to the surface to be cleaned through, the air outside the housing 110 is sucked into the housing 110 through the inlet port (113a) (113b). At this time, bacteria or pests attached to the surface to be cleaned and exposed to ultraviolet rays are destroyed and contained in the air together with foreign substances such as dust and sucked into the intake ports 113a and 113b.

The air sucked through the inlets 113a and 113b passes through the ultraviolet lamp 141 and flows into the first filter 131, and foreign matter is first filtered through the first filter 131. The air passing through the first filter 131 passes through the case 137 of the fan motor 136 and moves to the second filter 133 containing heat generated from the fan motor 136. In the second filter 133, the foreign matter not filtered out of the first filter 131 is secondarily filtered out, and the air from which the foreign matter is removed is discharged to the outside through the grille 135 of the second filter 133.

When the vacuum cleaner 100 is operated, sterilization and insecticide function by the ultraviolet generator 140 and the fan motor 136 as long as the three wheels 153 provided on the lower portion of the housing 110 are in contact with the surface to be cleaned. Cleaning function is maintained continuously.

While the vacuum cleaner 100 is operated, the bottom surface of the housing 110 is lifted from the surface to be cleaned, and if any one of the three wheels 153 is lifted from the surface to be cleaned, the UV generator 140 stops operating. That is, when the wheel 153 is lifted from the surface to be cleaned, the wheel 153 and the wheel shaft 154 are lowered by their own weight. At this time, the wheel shaft 154 is lowered along the guide groove 152, the pressing force of the wheel shaft 154 against the operating member 157 is released. When the pressing force on the actuating member 157 is released, the on / off button 158 pops out to its original position, and the actuating member 157 also has its other end 157b at its original position spaced apart from the body 156 at maximum. Is returned. When the on / off button 158 is returned to its original position, the micro switch 155 is turned off and the power supply to the ultraviolet ray generator 140 is cut off. Therefore, ultraviolet rays are not generated when the housing 110 is lifted from the bottom surface.

On the other hand, when cleaning the surface to be cleaned, such as duvets, bed covers, carpets, curtains, clothing, etc., the wheel 153 and the wheel shaft 154 may be lowered while the surface to be cleaned is deformed. In this case, even when the wheel 153 is in contact with the surface to be cleaned, the wheel 153 may be lowered to turn off the ultraviolet lamp 141, and the on / off state of the ultraviolet lamp 141 may be frequently changed. In view of this, it is necessary to keep the ultraviolet lamp 141 on even if the wheel 153 is slightly lowered at the maximum rising height.

To this end, as shown in FIG. 4, the micro switch 155 maintains the on state in the region h1 where the wheel shaft 154 is higher than or equal to a predetermined height of the guide groove 152 and the wheel shaft 154 is the guide groove 152. It is set to be in an OFF state in the region h2 below a certain height of. That is, when the wheel shaft 154 ascends along the guide groove 152 and ascends to approximately the same height as the on / off button 158, the on / off button 158 is pressed by the operating lever 157 and the microswitch ( 155 is turned on, and the on state of the microswitch 155 continues even if the wheel shaft 154 is further raised. However, when the wheel shaft 154 is lowered and positioned below the on / off button 158, the pressing force on the on / off button 158 is released and the micro switch 155 is turned off. Therefore, when cleaning the surface to be cleaned flexible surface, even if the wheel 153 is lowered to some extent because the micro switch 155 is kept on, the ultraviolet lamp 141 does not stop the operation, the ultraviolet lamp 141 of the The on / off state does not change frequently.

On the other hand, when the housing 110 of the vacuum cleaner 100 is lifted from the surface to be cleaned and placed on the surface to be cleaned again, the wheel 153 heard from the surface to be cleaned again comes into contact with the surface to be cleaned, and the wheel 153 together with the wheel shaft 154. To rise. The wheel shaft 154 raised along the guide groove 152 presses the other end 157b of the operation member 157 toward the body 156, and the operation member 157 presses the on / off button 158 to switch the microswitch ( Turn on 155). At this time, power is again supplied to the ultraviolet generating device 140 to generate ultraviolet rays.

In this way, the vacuum cleaner 100 according to the present invention is difficult to radiate ultraviolet light into a space other than the surface to be cleaned even if it is heard from the surface to be cleaned due to carelessness or mischief of the user during operation. Thus, the safety of use is improved and the reliability of the product is improved.

In the present invention, the safety device 150 may have a power control function for the fan motor 136 in addition to the power control function for the ultraviolet generator 140. Power control of the fan motor 136 by the safety device 150 can be implemented by those skilled in the art without changing the circuit inside the vacuum cleaner 100 without the addition of a separate safety device 150. In addition, the number or installation position of the safety device 150 may be variously changed. For example, only one safety device 150 may be provided at the lower rear of the housing 110, and only a normal wheel may be installed at the lower front of the housing 110.

In the above, the vacuum cleaner according to an embodiment of the present invention has been described as a handy vacuum cleaner in which the intake part 114 and the exhaust part 117 are integrally provided in one housing 110, but the vacuum cleaner according to the present invention It is not limited to a handy vacuum cleaner. That is, the vacuum cleaner according to the present invention may be a vacuum cleaner of various types with sterilization and insecticidal functions such as canister type, upride type and drum type.

Meanwhile, FIGS. 5 to 7 illustrate various types of safety devices that may be provided in the vacuum cleaner 100 according to one embodiment of the present invention.

In the safety device 160 shown in FIG. 5, the installation position of the microswitch 155 is changed as compared with the safety device 150 shown in FIG. 3. The safety device 150 shown in FIG. 3 is a body 156 is disposed substantially parallel to the lifting direction of the wheel shaft 154, the safety device 160 shown in Figure 5 is the body 156 is a wheel shaft 154 ) Is approximately horizontal. In addition to the arrangement of the microswitch 155, the specific configuration and operation of each component is the same as the safety device 150 shown in FIG.

In addition to the embodiment illustrated in FIGS. 3 and 5, the position of the microswitch 155 may be variously changed.

The safety devices 170 and 180 shown in FIGS. 6 and 7 have the same configuration as those of the safety device 150 shown in FIG. 3, and a magnet is installed on the wheel and the operation member, respectively, and the lifting movement of the wheel is performed. The microswitch is turned on / off by the attraction force or repulsive force between the magnets and the magnets. Of course, the magnet installed on the wheel can be replaced by that installed on the wheel shaft. In describing the safety devices 170 and 180 illustrated in FIGS. 6 and 7, the same parts as in FIG. 3 are referred to by the same reference numerals and detailed description thereof will be omitted.

In the safety device 170 shown in FIG. 6, the body 156 of the microswitch 155 is disposed outside the wheel guide 151 so that the body 156 of the microswitch 155 is substantially parallel to the wheel shaft 154. 172 extends to the top of the wheel guide 151. One end 172a of the operation member 172 is fixed to the body 156, and the other end 172b is coupled to the first magnet 174 to face the wheel guide 151.

The outer circumference of the wheel 153 is coupled to the first magnet 174 and the second magnet 176 that magnetically acts on each other. The second magnet 176 is coupled to the wheel 153 such that a polarity different from that of the first magnet 174 is located outside thereof. As shown in the drawing, the second magnet 176 may be formed of a single member having a ring shape, or may be formed of a plurality of pieces and coupled to the outer circumference of the wheel 153. The wheel guide 151 is made of a nonmagnetic and non-ferrous metal material that does not significantly affect the magnetic forces of the first and second magnets 174 and 176 so that the first and second magnets 176 may interact with each other. .

The safety device 170 may be lifted when the housing 110 of the vacuum cleaner 100 is placed on the surface to be cleaned, and the wheel 153 is in contact with the surface to be cleaned, and when the wheel 153 is raised to be close to the operating member 172, An attractive force acts between the first magnet 174 and the second magnet 176 to pull the first magnet 174 toward the wheel 153. At this time, the on / off switch 155 is pressed by the operation member 172, the micro switch 155 is turned on and the power is supplied to the ultraviolet ray generator 140.

On the other hand, when the housing 110 of the vacuum cleaner 100 is lifted from the surface to be cleaned, the wheel 153 descends due to its own weight, and the first and second magnets 174 and 176 are separated from each other. When the first and second magnets 174 and 176 are separated from each other, the attraction force between the first and second magnets 174 and 176 weakens, so that the operating member 172 is inherently in contact with the on / off switch 155. Return to position At this time, the micro switch 155 is turned off and the power supply to the ultraviolet ray generator 140 is cut off.

In the safety device 170 shown in FIG. 6, any one of the first and second magnets 174 and 176 provided in the operating member 172 and the wheel 153 may be omitted. In this case, any one in which the magnet is not omitted is made of a material that generates attraction force between the magnet and the like, such as ferrous metal. For example, if the first magnet 174 is omitted and the actuating member 172 is made of a material that reacts to the magnetic force, the actuating member 172 is caused by the magnetic force of the second magnet 176 when the wheel 153 is raised. The micro switch 155 is turned on by moving toward the wheel guide 151. When the wheel 153 is lowered, the micro switch 155 is turned off while the operating member 172 returns to its original position out of the operable magnetic force range of the second magnet 176.

On the contrary, if the second magnet 176 is omitted and the wheel 153 is made of a material that reacts to the magnetic force, when the wheel 153 is raised, the first magnet 174 moves toward the wheel 153 and the microswitch ( 155 is turned on. When the wheel 153 is lowered, the attraction force between the wheel 153 and the first magnet 174 is weakened, and the micro switch 155 is turned off while the operating member 172 returns to its original position.

In the safety device 180 illustrated in FIG. 7, the microswitch 155 is disposed upside down on the wheel guide 151 as compared to the safety device 170 illustrated in FIG. 6. The combined first magnet 174 is disposed above the wheel guide 151. The operating member 172 of the wheel guide 151 and the microswitch 155 is made of nonmagnetic and nonferrous metals that do not affect the magnetic forces of the first and second magnets 174 and 176.

The safety device 180 is a repulsive force acting between the first and second magnets 174, 176, the other end 172b of the operating member 172 when the wheel 153 is raised in contact with the surface to be cleaned. The microswitch 155 is turned on by rising toward the body 156 of the switch 155. On the other hand, when the wheel 153 falls from the surface to be cleaned and descends by its own weight, the repulsive force between the first and second magnets 174 and 176 is released to return the operating member 172 to its original position, and the on / off switch ( 155 is returned to its original position and the microswitch 155 is turned off.

The safety devices 170 and 180 illustrated in FIGS. 6 and 7 utilize the magnetic force of the magnets 174 and 176 to operate the driving member 172 without directly contacting the wheel shaft 154 with the operating member 172. Can move. Therefore, there is an advantage that can reduce friction and wear between the members.

The present invention described above is not limited to the configuration and operation as shown and described. That is, the present invention is capable of various changes and modifications within the spirit and scope of the utility model registration claims described.

1 is a side cross-sectional view schematically showing a vacuum cleaner according to an embodiment of the present invention.

Figure 2 is a bottom perspective view schematically showing a vacuum cleaner according to an embodiment of the present invention.

Figure 3 is a perspective view schematically showing a safety device of the vacuum cleaner according to an embodiment of the present invention.

Figure 4 is a side view for explaining the operation of the safety device of the vacuum cleaner according to an embodiment of the present invention.

5 to 7 is a perspective view showing various embodiments of the safety device provided in the vacuum cleaner according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

100 ... vacuum cleaner 111 ... with filter

112 Fan motor installation room 113a, 113b Intake vent

114 Intake vent 116 Exhaust vent

117 Exhaust 120 Striker

131,133 ... 1,2 filter 132,134 ... 1,2 filter element

140 ... UV generator 141 ... UV lamp

150,160,170,180 ... Safety device 151 ... Wheel guide

153 ... wheel 154 ... wheel axle

155 ... micro switch 157,172 ... operating member

158..On / off button 174,176 ... 1,2 magnets

Claims (7)

In the vacuum cleaner having a UV generating device for irradiating the ultraviolet to the surface to be cleaned, the foreign matter on the surface to be cleaned by suction And a safety device for turning on / off the power of the ultraviolet-ray generating device, wherein the safety device is mounted on the wheel guide and the wheel guide to be movable up and down and is raised when the surface is in contact with the surface to be cleaned. A microswitch having a wheel descending by its own weight when falling off the surface to be cleaned, and an actuating member interlocked with the movement of the wheel to be on / off by the movement of the wheel, The wheel guide is provided with a guide groove extending in the vertical direction, the wheel is provided with a wheel shaft that is inserted into the guide groove so as to move and move up and down with the wheel to operate the operating member. . delete The method of claim 1, The operating member is disposed outside the wheel guide so that one end of the fixed end is located below the guide groove and the other end of the free end is located above the guide groove. When the wheel is raised, the wheel shaft of the operating member And the microswitch is turned on by pressing the other end, and when the wheel is lowered, the pressing force of the operating member is released and the microswitch is turned off. The method of claim 1, The actuating member is disposed outside the wheel guide such that one end, which is a fixed end and the other end, which is a free end, is positioned above the guide groove, and the other end is closer to the guide groove than the one end. And the microswitch is turned on by pressing the other end of the operating member, and when the wheel is lowered, the pressing force of the operating member is released and the microswitch is turned off. The method of claim 1, And the microswitch is set to maintain an on state when the wheel shaft is located in an area of a predetermined height or more of the guide groove. The method of claim 1, The actuating member is provided with a first magnet, and either one of the wheel and the wheel shaft is provided with a second magnet corresponding to the first magnet, and the actuating member is provided with the first and second magnets when the wheel is lowered. The vacuum cleaner is operated by the magnetic interaction of the. The method of claim 1, A magnet is installed at any one of the actuating member and the wheel, and the other one of the actuating member and the wheel in which the magnet is not installed is made of a material that generates attraction force between the magnet and the actuating member. The electric vacuum cleaner, characterized in that operated by the magnetic force of the magnet when the wheel is raised and lowered.

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