JP5871660B2 - Hand dryer - Google Patents

Description

  The present invention relates to a hand drying device for drying wet hands after washing.

  2. Description of the Related Art Conventionally, a hand dryer that dries hands by applying warm air or high-speed air to wet hands is known. For example, Patent Literature 1 discloses a hand dryer including an operation unit lid (cover) connected to a main body box by a hinge structure provided at one end. By turning the hinge structure as a fulcrum and opening the operation unit lid, the power switch, heater switch, and air volume adjuster provided in the inner operation unit can be operated.

  The operation unit lid is provided with an operation unit key mechanism that restricts the opening and closing of the operation unit lid. The shape of the key insertion portion of the operation unit key mechanism has a specific groove or protrusion. The operation unit key mechanism can be rotated (released) by inserting a dedicated key manufactured to match the shape of the insertion unit. When the operation unit key mechanism is rotated, the front end overlaps with a part of the rear panel, and the operation unit lid can be prevented from being opened.

International Publication No. 2009/130769

  However, in the above-described conventional hand drying apparatus, the operation unit lid is provided in a part of the outer shell, and the key insertion portion of the operation unit key mechanism on the operation unit lid is in a position that is conspicuous to the user. There was a problem that the nature was very bad. In addition, since the operation unit key mechanism that restricts the opening and closing of the operation unit lid requires a dedicated key, it is necessary to prepare a dedicated key when opening and closing the operation unit lid, which is troublesome. there were. In addition, since the operation unit lid cannot be opened and closed without a dedicated key, there is a problem that the power switch cannot be turned off immediately when there is an abnormality in the hand dryer.

  The present invention has been made in view of the above, and provides a hand-drying device that can improve design and convenience while providing a lock mechanism that can prevent tampering and limit the opening of the cover. The purpose is to obtain.

  In order to solve the above-described problems and achieve the object, the present invention provides a hand insertion portion that can be inserted and removed by a hand, a nozzle that sends air toward the hand insertion portion, and a high pressure that sends air from the nozzle. An air flow generator, a casing having the high-pressure air flow generator therein, a cover that can be opened and closed outside the casing and covers a part of the casing, and a protrusion provided on a portion of the cover facing the casing And a sandwiching portion provided in the casing, the projecting portion being inserted and holding the projecting portion in a state where the cover is closed, and being elastically deformed by being pushed and expanded by the projecting portion when the projecting portion is inserted and removed It is characterized by comprising locking means that can be switched between a position for restricting deformation and a position for allowing deformation.

  According to the present invention, by providing the lock unit that can restrict the elastic deformation of the sandwiching portion by switching the position and restrict the opening of the cover, while preventing the tampering operation and providing the lock mechanism that can restrict the opening of the cover The design and convenience can be improved.

FIG. 1 is a front view showing an appearance of a hand-drying apparatus according to Embodiment 1 of the present invention. FIG. 2 is a side cross-sectional view of the hand dryer according to the first embodiment of the present invention. FIG. 3 is a perspective view showing an external appearance of the hand dryer according to the first embodiment of the present invention with the cover opened. 4 is a partial enlarged cross-sectional view in which the holding means portion is enlarged, and is a cross-sectional view taken along the line AA shown in FIG. FIG. 5 is a partially enlarged perspective view in which the holding means portion is enlarged. FIG. 6 is a partially enlarged view of the holding means portion and shows a state when locked. FIG. 7 is a partially enlarged view of the holding means portion, showing a state when the lock is released. FIG. 8 is a cross-sectional view of the holding means portion as viewed from above, and shows a state when locked. FIG. 9 is a cross-sectional view of the holding means portion as viewed from above, and shows a state when the lock is released.

  Below, the hand dryer concerning embodiment of this invention is demonstrated in detail based on drawing. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a front view showing an appearance of a hand-drying apparatus according to Embodiment 1 of the present invention. FIG. 2 is a side cross-sectional view of the hand dryer according to the first embodiment of the present invention. FIG. 3 is a perspective view showing an external appearance of the hand dryer according to the first embodiment of the present invention with the cover opened. As shown in the figure, the casing 1 forming the outer shell of the hand dryer has a hand insertion port 2 on the front surface, and includes a hand insertion part 3 as a processing space following the hand insertion port 2 so that a hand can be inserted and removed. It is like that. The manual insertion part 3 is formed in the front lower part of the casing 1 as an open sink-like recess whose front and both side surfaces are open.

  The water receiving part 4 and the back side forming the lower part of the manual insertion part 3 are provided with a barrier structure by rising of the curved surface structure at the end edge part so that water does not scatter to the side or the front. . The bottom of the water receiver 4 is inclined downward toward the front, and a drain port 5 is provided at the lower end of the inclination.

  A drain container 6 for storing water dripping from the drain port 5 is provided below the water receiving portion 4 so as to be freely inserted and removed. In addition, the inner surface of the hand insertion portion 3 is impregnated with a water-repellent coating such as silicon or fluorine, a hydrophilic coating such as titanium oxide, or an antibacterial agent to reduce the adhesion of dirt on the inner surface. It is designed to reduce the propagation of bacteria. A nozzle 7 that blows high-speed air downward toward the hand insertion portion 3 is provided at the upper portion of the manual insertion portion 3. In the vicinity of the back surface side of the nozzle 7, a hand detection sensor 8 that detects the presence or absence of the hand of the hand insertion portion 3 is provided.

  A box-shaped space is formed above the manual insertion portion 3 by the casing 1 and the base that forms the outer shell of the hand-drying device on the back side. In the box-shaped space, a high-pressure airflow generator 9 including a DC brushless motor (which may be a commutator motor or an induction motor) and a turbo fan rotated by the DC brushless motor, and a high-pressure airflow generator 9 and the internal intake passage 11 communicating with the internal intake port 10 provided in front of the casing 1 above the manual insertion portion 3 and the exhaust side communicating with the nozzle 7 and the exhaust side of the high-pressure airflow generator 9. The passage 13 and a control circuit (not shown) for operating the high-pressure airflow generator 9 according to the hand detection of the hand detection sensor 8 are incorporated.

  A heater 15 is provided in the middle of the exhaust passage 13 and in the vicinity of the upstream side of the nozzle 7 to heat the air sent from the high-pressure airflow generator 9 to warm it. In addition, an outer shell of the hand drying device is formed at the upper part of the hand insertion portion 3 and outside the front surface of the casing 1, and the left end is rotatably supported by the casing 1 and opens and closes to the front side of the hand drying device. A cover 16 that can be freely attached to and detached from the casing 1 is attached.

  An inclined portion 17a that is inclined toward the central side in the left-right direction is provided on a part of the left and right side surfaces of the casing 1 from the back side to the front side. Moreover, the recessed part 17 in which a part of ridgeline of the front surface of the casing 1 and a side surface and a part of side surface are dented is provided. That is, on the side surface of the casing 1, a step is provided between the inclined portion 17a and other portions. By connecting these step portions, the inclined portion 17a becomes a recess 17 in which a part of the side surface of the casing 1 is recessed. The inclined portion 17 a becomes the bottom surface of the concave portion 17.

  In a state where the cover 16 is closed, the outer periphery of the cover 16 abuts on the casing 1 at a portion other than the recess 17. Further, in the concave portion 17, the outer periphery of the cover 16 does not contact the concave portion 17, and the space formed between the cover 16 and the concave portion 17 becomes the external intake port 18. The external intake port 18 opens toward the outside. That is, the external air inlet 18 is formed across the cover 16 and the casing 1.

  Inside the outer periphery of the cover 16, an external intake passage 19 that connects the internal intake port 10 and the external intake port 18 is constituted by the cover 16 and the casing 1. That is, the external intake passage 19 is formed across the cover 16 and the casing 1. It can be said that an external intake passage 19 is formed between the cover 16 and the casing 1.

  As shown in FIG. 3, the front surface of the casing 1 that appears when the cover 16 is opened covers the internal intake port 10 provided in the casing 1, and passes from the external intake port 18 through the external intake passage 19 to the internal intake port 10. A resin or metal filter 20 for removing dust in the air sucked into the high-pressure airflow generator 9 is provided. The filter 20 is attached to the casing 1 so that it can be attached and detached by an insertion / removal operation in the front-rear direction.

  The area of the filter 20 is larger than the cross-sectional area of the external intake port 18 and the external intake passage 19 with respect to the ventilation direction. In the front of the casing 1 and in the vicinity of the filter 20, an operation portion of the operation switch 21 is provided so as to face the front side, so that the user can easily see and operate from the front side.

  The operation switch 21 includes a power switch 21 a that switches on / off the power to a control circuit (not shown), and a change-over switch 21 b that switches the strength of the air blown from the blowing nozzle 7 and switches the heater 15 on and off. is there. The filter 20 may be a HEPA filter or an antibacterial filter.

  The cover 16 is held by the holding means 30 in a closed state with respect to the casing 1. 4 is a partial enlarged cross-sectional view in which the holding means 30 portion is enlarged, and is a cross-sectional view taken along the line AA shown in FIG. The holding means 30 has a protruding portion 31 and a clamping portion 32.

  The protrusion 31 is provided in a portion of the cover 16 that faces the casing 1. The protrusion 31 is provided at an end (right end in front view) opposite to an end (left end in front view) where the cover 16 is rotatably supported. As shown in FIG. 4, the protruding portion 31 has a cross-sectional shape that becomes thicker from the base portion on the cover 16 side toward the tip portion, and further narrows from the middle toward the tip portion.

  The clamping part 32 is provided in the casing 1. The clamping part 32 is provided at a position facing the protruding part 31 in a state where the cover 16 is closed. The clamping part 32 has two elastic bodies 32a which are erected toward the cover 16 and can be elastically deformed. The space sandwiched between the two elastic bodies 32a is a space in which the protruding portion 31 is accommodated when the cover 16 is closed.

  A space sandwiched between the two elastic bodies 32 a has substantially the same shape as the cross-sectional shape of the protrusion 31. Therefore, the distance between the two elastic bodies 32 a on the tip side is thicker than the tip of the protrusion 31 and thinner than the thick part of the protrusion 31. Therefore, the protruding portion 31 sandwiched between the two elastic bodies 32a is not easily pulled out from the sandwiching section 32 by being caught by the elastic body 32a. Thereby, the cover 16 can be held in a closed state.

  From the state in which the cover 16 is closed, the right end side of the cover 16 is pulled by applying a certain amount of force in the opening direction, so that the two elastic bodies 32a are elastically deformed so as to be spread. Thereby, the projection part 31 is extracted from the clamping part 32, and the cover 16 can be opened.

  Further, when the cover 16 is opened, the right end side of the cover 16 is pushed in the closing direction, so that the two elastic bodies 32a are elastically deformed so as to be spread. Thereby, the projection 31 is inserted into the space between the two elastic bodies 32a, and the cover 16 can be closed.

  When the cover 16 is closed, the outer periphery of the cover 16 contacts the casing 1 except for the recess 17. In this state, by determining the positional relationship between the projecting portion 31 and the sandwiching portion 32 so that the projecting portion 31 is pushed further backward (in the closing direction) by the restoring force of the sandwiching portion 32, the cover 16 is more firmly formed. The closed state can be maintained. Thereby, for example, rattling of the cover 16 can be prevented.

  Thus, when opening the cover 16, the cover 16 can be opened by placing the hand on the external air inlet 18 and pulling the cover 16 forward. Since the cover 16 is fixed by the holding means 30, the cover 16 cannot be opened unless a certain amount of force is applied. That is, the cover 16 does not open to the extent that the hand is accidentally touched or struck by the cover 16. As a result, the cover 16 is opened except for those who are aware of opening the cover 16 such as a main body cleaner or administrator who opens the cover 16 to clean the filter 20 or changes the setting with the operation switch 21. A structure that does not easily open can be used.

  Next, the lock mechanism will be described. FIG. 5 is a partially enlarged perspective view in which the holding means 30 is enlarged. FIG. 6 is a partially enlarged view of the holding means 30 and shows a state when locked. FIG. 7 is a partially enlarged view of the holding means 30 and shows a state when the lock is released. FIG. 8 is a cross-sectional view of the holding means 30 as viewed from above, and shows a state when locked. FIG. 9 is a cross-sectional view of the holding means 30 as viewed from above, and shows a state when the lock is released.

  In the lock mechanism of the hand drying device according to the first embodiment, the lock means 33 is inserted into the holding means 30 portion from the side of the casing 1 to limit the elastic deformation of the holding portion 32 so that the cover 16 does not open. Can be forced to.

  Specifically, the lock means 33 includes an insertion part 34, a fall prevention part 35, and a knob 36. Two insertion parts 34 are provided. As shown in FIG. 6, when the lock means 33 is moved in the insertion direction with respect to the holding means 30, the elastic body 32 a is elastically deformed outside the two elastic bodies 32 a of the holding part 32. Two insertion portions 34 are inserted into the region to be restricted (region B shown in FIG. 4, in the vicinity of the direction in which the elastic body 32 a is elastically deformed). Thereby, it will be in the state where it was controlled so that elastic body 32a might not be spread (at the time of lock). Accordingly, even if the cover 16 is opened, the elastic deformation of the elastic body 32a is restricted, so that the protrusion 31 is difficult to be removed from the holding part 32, and the cover 16 can be prevented from being opened by mischief or the like.

  When the cover 16 is opened (when unlocked), the knob 36 is pulled outward and moved in the extraction direction, so that the elastic body 32a can be elastically deformed as shown in FIG. Since the insertion part 34 comes off, the elastic body 32a can be elastically deformed. Therefore, it is possible to open the cover 16 by expanding the elastic body 32a.

  The fall prevention part 35 is provided on the distal end side with respect to the insertion part 34. Moreover, the fall prevention part 35 is inserted in the area | region (area | region C shown in FIG. 4) which does not restrict | limit the elastic deformation of the elastic body 32a on the outer side of the two elastic bodies 32a of the clamping part 32, respectively. Since the elastic deformation of the elastic body 32a is not restricted by the fall prevention part 35, the opening of the cover 16 is not hindered. And as shown in FIG.7 and FIG.9, the state in which the fall prevention part 35 was inserted in the holding means 30 part is maintained even at the time of lock release. Thereby, it is possible to prevent the locking means 33 from falling off the case 1 when unlocking.

  Further, since the holding means 30 is provided in the concave portion 17 portion of the casing 1, as shown in FIG. 8, the lock means 33 can be disposed on the inner side of the outer periphery of the cover 16 when viewed from the front when locked. As a result, the knob 36 is difficult for the user to see in a normal use state, and the lock means 33 is less likely to be operated due to mischief or the like. Further, by making the lock means 33 difficult to see, it is not necessary to deteriorate the design.

  Further, as shown in FIG. 9, a knob 36 is disposed outside the outer periphery of the cover 16 when unlocking. Therefore, if the knob 36 is visually confirmed, it can be easily grasped whether it is in the locked state or the unlocked state, and it is difficult to forget to return to the locked state when the cover 16 is closed. In addition, you may comprise so that the knob 36 may be arrange | positioned inside the outer periphery of the cover 16 also at the time of lock release.

  In addition, the cover 16 can be opened in the unlocked state simply by operating the knob 36 without bringing a key or the like separately. Therefore, when an abnormality occurs in the hand dryer, the lock can be released instantaneously and the power switch 21a can be turned off, thereby improving safety.

  Next, the operation at the time of use for drying the hand will be described. When the cover 16 is opened and the power switch 21a is turned on (ON), a control circuit (not shown) is energized to close the cover 16 and become ready for use. When the user inserts a wet hand into the hand insertion part 3 from the hand insertion port 2 to the vicinity of the wrist, insertion of the hand is detected by the hand detection sensor 8, and high-pressure air is processed by a control circuit (not shown). The flow generator 9 is activated.

  When the high-pressure airflow generator 9 operates, the air outside the hand dryer flows from the back side to the front side along the inclined portion 17a and the inlet wall provided in the casing 1 and is sucked from the external inlet 18 It is. The air sucked from the external intake port 18 passes through the external intake passage 19, dust is removed by the filter 20, and is sucked into the internal intake port 10.

  The air sucked into the internal air inlet 10 passes through the internal air intake passage 11, temporarily rises from the position of the internal air inlet 10, passes above the high-pressure airflow generator 9, moves toward the back side, and moves downward. It is sucked in from the suction side of the high-pressure airflow generator 9. The high-pressure airflow generator 9 converts the air sucked from the intake side into high-pressure air from the exhaust side and exhausts it. The exhausted high-pressure air passes through the exhaust passage 13 and is converted from the nozzle 7 into a high-speed airflow having high kinetic energy. Then, it is blown out downward into the hand insertion portion 3.

  The high-speed airflow blown out from the nozzle 7 hits the wet hand inserted in the hand insertion portion 3, and moisture attached to the hand can be peeled off from the surface of the hand and blown off to dry the hand. Furthermore, by inserting and removing the hand in the hand insertion part 3, most of the water droplets adhering to the entire hand are eliminated, and the hand is dried.

  In addition, when the heater switch is turned on (ON) by the changeover switch 21b, the heater 15 is energized and the high-pressure air passing through the exhaust passage 13 is heated. Also feel good.

  When the hand is removed from the hand insertion portion 3 after the hand drying process is completed, the hand detection sensor 8 detects that the hand has been removed, and the high-pressure airflow generator 9 stops. The water droplets blown from the hand flow down toward the drainage port 5 in the water receiving portion 4 having a forward tilt structure, and are stored in the drain container 6 from the drainage port 5.

  As described above, the hand drying device according to the present invention is useful for a hand drying device that dries water droplets attached to the hand with a high-pressure air flow.

DESCRIPTION OF SYMBOLS 1 Casing 2 Hand insertion port 3 Hand insertion part 4 Water receiving part 5 Drainage port 6 Drain container 7 Nozzle 8 Hand detection sensor 9 High pressure air flow generator 10 Internal intake port 11 Internal intake passage 13 Exhaust passage 15 Heater 16 Cover 17 Recessed portion 17a Inclined part (bottom)
18 External intake port 19 External intake passage 20 Filter 21 Operation switch 21a Power switch 21b Changeover switch 30 Holding means 31 Projection part 32 Holding part 32a Elastic body 33 Locking means 34 Insertion part 35 Fall prevention part 36 Knob

Claims (4)

A hand insertion section wide enough to put in and out the hand,
A nozzle for sending air toward the manual insertion portion;
A high-pressure airflow generator for delivering air from the nozzle;
A casing provided with the high-pressure airflow generator inside;
A cover that can be opened and closed on the front and outside of the casing and covers a part of the casing;
A protrusion provided on a portion of the cover facing the casing;
A sandwiching portion provided in the casing and sandwiching the projecting portion by inserting the projecting portion in a state in which the cover is closed, and being elastically deformed by being spread by the projecting portion when the projecting portion is inserted and removed;
It is possible to switch between a position that restricts elastic deformation of the clamping part and a position that allows it, and a locking means provided inside the cover in a front view at a position that restricts elastic deformation of the clamping part. Features a hand dryer. An air inlet that is formed across a side surface of the casing and a side surface of the cover and sucks air outside the casing and the cover;
A recess formed in a part of the side surface of the casing constitutes a part of the intake port,
The clamping portion is provided in a range where the concave portion is formed in the height direction , and inside the casing ,
The hand-drying device according to claim 1 , wherein the lock unit is provided so as to be insertable / removable from a side of the casing with respect to the clamping portion. The locking means is moved to a position that restricts the elastic deformation of the clamping part by moving in the insertion direction, and an insertion part that moves to a position allowing the elastic deformation of the clamping part by moving in the extraction direction. The hand dryer according to claim 2 , further comprising: a fall prevention unit that prevents the locking means from falling out of the casing in a state in which elastic deformation of the clamping unit is permitted. The hand-drying device according to claim 3 , wherein the insertion part is inserted in the vicinity of the deformation direction side of the clamping part by moving in the insertion direction.

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