JPH07116080A - Hand dryer - Google Patents

Abstract

PURPOSE:To satisfactorily introduce an electric wire into a hand dryer and to satisfactorily drain water having entered the dryer, by forming a receiving port having an inclined part opened its upper surface for draining water onto the rear surface side, at the front end of a power source wire introducing cylindrical part 26 formed on the rear surface of the body of the hand dryer. CONSTITUTION:An electric wire introducing cylindrical part 28 is integrally incorporated with and is projected from an electric wire introducing hole 26 in the rear surface 2 of a hand dryer. An inclined part 29b is formed at the front end of the cylindrical part 28. An upper surface opening 29a is formed on the upper surface side of the inclined part 29b so as to define a receiving port 29 together with the inclined part 29b. A V-like groove 27 formed in the lower part of a power source wire introducing hole 26 prevents water from entering the hole 26, and water having entered the dryer, can be drained outside from the receiving port 29 by way of the inclined part 29b. It is noted that a power source wire is inserted through the power source wire introducing hole 26, satisfactorily along the inclined part 29b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved hand dryer.

[0002]

2. Description of the Related Art Conventionally, hand dryers for washing hands and drying hands have been installed on wall surfaces in toilets, etc. As the use of hand dryers has spread, hand dryers have become a service. It is often installed in a toilet where many unspecified people enter and leave areas such as areas, and in the case of toilets such as such service areas, water is sprayed on the toilet wall surface during cleaning, and the wall surface is cleaned by spraying water. In such a case, the conventional hand dryer has a problem that sprinkling of water into the interior often causes a failure of electric components such as a hot air fan inside due to the water immersion.

[0003]

SUMMARY OF THE INVENTION The present invention has been devised in view of the above-mentioned problems of the prior art. Even when the present invention is installed in a public toilet such as a service area, it is possible to prevent the water from being flooded inside. The first gist of the present invention is to provide a hand dryer that can be installed, and the first gist of the invention is that the back surface of the main body of the hand dryer installed on the wall surface of a toilet or the like opens to the wall surface side and to the front side opposite to the wall surface. That is, a protruding cylindrical portion for drawing in a power supply line is formed, and a receiving opening having an inclined portion whose upper surface is opened so that water can flow out to the wall surface side is formed at a front end of the cylindrical portion. The second gist is that an opening hole such as a power line lead-in hole is formed on the back surface of the main body of a hand dryer installed on a wall surface of a toilet or the like, and water is provided in the lower part of the wall surface side of the opening hole. That is, a V-shaped V-shaped groove that is made to flow downward is recessed.

[0004]

In the first aspect, when the power line is inserted from the rear surface of the main body of the hand dryer into the power line lead-in tube, the power line can be satisfactorily inserted inside along the inclined portion at the front end. When water enters the hand dryer, it can be received at the receiving port and discharged well to the back side through the sloped part. It can be prevented well.
In the second aspect, if a V-shaped V-shaped groove is formed in the lower portion of the opening on the back surface of the main body of the hand dryer, water that attempts to enter the opening from the back side can be passed through the V-shaped groove. It is possible to satisfactorily prevent the entry of water into the inside by favorably flowing down.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a plan view of the hand dryer with a front cover removed, FIG. 2 is a side view of the hand dryer, FIG. 3 is a rear view of the hand dryer, and FIG. 4 is a bottom view of the hand dryer as viewed from below. It is a figure.

The hand dryer 1 is composed of a back plate 2 made of resin on the back side, and a front cover 3 made of metal is integrally provided on the front surface of the back plate 2 so as to cover the inside thereof with warm air. A hot-air fan 4 that blows out is arranged, a sensor frame 7 with a sensor is arranged near the outlet 4a at the lower end of the warm-air fan 4, and a terminal block 6 and a control board 5 are provided inside. Has been arranged. In this hand dryer 1, a mounting bracket 8 is fitted on the back side of the back plate 2, and the mounting bracket 8 is fixed to a wall surface of a toilet or the like via a screw 9, and the mounting bracket 8 is as shown in FIG. A fixed piece 8a which is formed in a shape and has screw holes 8c, 8c, 8c, 8c through which the screw 9 is inserted and which is fixed to a wall surface of a toilet or the like via the screw 9;
The fixed piece 8a is formed in an L-shape having a locking piece 8b that projects substantially horizontally toward the front side at the lower end. The locking piece 8b of the mounting bracket 8 has a protruding piece of the base chassis B. The lower end of Ba contacts and is locked.

The details of the back plate 2 will be described with reference to FIGS. 5 to 12. FIG. 5 is a plan view of the front side of the back plate 2, FIG. 6 is a plan view of the back side of the back plate 2, and FIG. Is a perspective view of the front side of the back plate 2 seen from above, and FIG. 12 is a perspective view of the back side of the back plate 2 seen from below. In the figure, a large number of air intake holes 2 are provided on the outer peripheral side and lower portions of the back plate 2.
a, 2a, 2a are formed, and the intake holes 2a, 2a
As shown in the CC cross section of FIG. 6 in FIG. 9, a and 2a are formed in an inclined shape that is inclined downward from the front surface side to the back surface side, and water that enters from the back surface side does not flow into the front surface side. It is formed in an inclined shape.

In the rear view of FIG. 6, the intake holes 2a,
Inside the 2a, 2a, a rectangular contact protruding frame 2d is formed which protrudes to the back side, and this contact protruding frame 2d is installed in contact with a wall surface of a toilet or the like. A pair of mounting metal fitting holes 21 and 21 for inserting the mounting metal fittings that engage with the mounting metal fittings 8 are formed inside the abutting projection frame 2d, and a screw is formed above the one mounting metal fitting hole 21. Hole 2
3, 23 are formed. An inverted U shape projecting toward the back side so as to surround the outer peripheries of the mounting bracket hole 21 and the screw hole 23.
The ribs 22 and 22 are formed in a character shape.
Since the projections 2 and 22 are formed, the sprinkling water that flows down the wall surface of the toilet or the like will flow down along the ribs 22, and the fitting hole 21 and the screw hole 23.
It is possible to prevent water from entering the inside.

Further, a concave portion 24 is formed in the lower central portion of the pair of inverted U-shaped ribs 22, 22 in a concave shape toward the front side. That is, as shown in the cross-sectional view taken along the line AA of FIG. 7, the locking piece 8b of the mounting member 8 is arranged in contact with the back surface of the recess 24, but the recess 24 has a portion. In this case, a gap is formed between the locking piece 8b and the locking piece 8b as shown in FIG. 2. Therefore, even when water flowing down from above is accumulated on the locking piece 8b of the fitting 8, the concave portion 24 The water can escape downward and the water can be well drained downward.

Below the recess 24, a pair of water escape receiving ports 25, 25 are formed. As shown in the sectional view taken along the line BB of FIG. 6 in FIG. 8, this water escape receiving port 25 is formed so as to project toward the front surface side, and its upper end is located on the front side of the rear plate 2 with its upper surface facing upward. Opened top opening 2
5a is formed, and an inclined surface 25b is formed so as to be inclined downward from the upper surface opening 25a to the back side. From the gap between the base chassis B and the mounting bracket hole 21, the front side of the rear plate 2, that is, the inside of the hand dryer 1. The water that has entered into the above is released so that it can be received by the upper surface opening 25a of the receiving port 25 and discharged to the back side along the inclined surface 25b.

Further, a power supply inlet hole 26 is formed below one side of the water escape receiving port 25, and a V groove 27 recessed in a V shape is formed in the lower portion of the power source inlet hole 26. The water is satisfactorily flowed downward through the V groove 27. As shown in FIG. 8, a power-supplying tubular portion 28 is integrally formed in the power-feeding hole 26 so as to project to the front side, and the front end of the power-feeding tubular portion 28 is formed as an inclined portion 29b inclined upward. The upper surface side of the inclined portion 29b forms an open upper surface opening 29a, and the receiving portion 29 is formed by the inclined portion 29b and the upper surface opening 29a.

Therefore, the water can be prevented from entering the power supply inlet 26 by the V groove 27, and the water that has entered the inside can be received by the receiving port 29 and discharged to the outside through the inclined portion 29b. You can In addition, this power supply hole 2
6, the power supply line is inserted from the back side, and the power supply line is properly inserted along the inclined portion 29b.

As shown in the plan view from the front side of FIG. 5, a frame mounting portion 2b is formed at the center of the front side lower end of the rear plate 2 below the power supply pull-in cylinder 28. The sensor frame 7 can be installed on the mounting portion 2b, and a screw hole 2c for fixing the sensor frame 7 is formed in the frame mounting portion 2b.

Further, as shown in FIG. 5, a projection 30 further projecting to the front side is provided at a portion indicated by D on the partitioning projection 2f formed in a frame shape inside the front air intake hole 2a of the back plate 2. As shown in an enlarged view in FIG. 10, the projection 30 is integrally formed, and the upper end thereof forms an inclined portion 30a which is inclined outward, that is, the inclined portion 30a which is inclined downward to the intake hole 2a side.
It is configured so that the water that tries to enter the inside can be satisfactorily discharged to the outside through the. In addition, a ground mark 30b defined by law is engraved on the protrusion 30, and an arrow 30c indicating a ground position is further engraved below the mark. A plurality of terminal block mounting pins 2e are formed so as to project to the front side at the position indicated by the arrow 30c, that is, at the inner lower part of the protrusion 30, and the power source drawing cylinder portion 28 is formed on the terminal block mounting pins 2e. It is configured so that the terminal block 6 for connecting the power supply line drawn in through the can be attached.

The ribs 22 may be formed so as to project on the outer periphery of various opening holes formed in the back plate 2 so as to prevent water from entering the opening holes from the back side. It is also possible to form a plurality of the projections 30 over the entire circumference of the partition projection 2f so that water can be discharged to the outside through the inclined portion 30a.

As described above, in this embodiment, the intake hole 2a can be formed in an inclined shape to prevent water from entering from the back side, and the rib 22 prevents water from entering the opening hole from the back side. It can be prevented satisfactorily, and further, the V groove 27 can satisfactorily let water flow downward to prevent the water from entering the opening, and the water that has entered the inside can be satisfactorily backed through the water escape receiving port 25. Can be discharged to the concave portion 2
4 has a structure that improves the outflow of water to the lower side and prevents the intrusion of water to the inside as much as possible. 4. The structure is such that the adverse effects of water on the electric parts such as the control board 5 can be eliminated and the occurrence of failures of these parts can be favorably prevented. The V groove 27 may be formed under any opening.

Incidentally, as shown in FIG. 17, in the hand dryer 40 having the rear surface protruding portion 40a protruding to the rear surface, a part where the engaging piece 8b at the lower end of the mounting member 8 abuts instead of the recess 24. It is possible to form a water-releasing recess 24 in a notch shape and allow the water accumulated on the locking piece 8b to flow down favorably via the water-releasing recess 24.

Next, FIG. 14 shows a perspective view of the mounting state of the sensor frame 7 mounted on the frame mounting portion 2b of the back plate 2. As shown in FIG. That is, the sensor frame 7 has a bottom piece 7a that is placed on the frame placement portion 2b in an abutting manner, and a screw hole 7b is formed in this bottom piece 7a.
Side pieces 7c, 7c are integrally formed on both sides of the bottom piece 7a so as to rise upward, and positioning claw pieces 7d, 7d projecting further upward are integrally formed on the upper ends of the pair of side pieces 7c, 7c. An elliptical sensor hole 7f for attaching the infrared hand detection sensor 11 from the back side is formed below the claw pieces 7d, 7d, and a rectangular recess is formed on the front surface of the sensor hole 7f. A recess 7g is formed, and projections 7h and 7h are integrally formed on both sides of the recess 7g so as to project forward. A mounting cylinder portion 7e for mounting the temperature sensor 10 is integrally formed below the sensor hole 7f.

An infrared sensor 11 having a light emitting element and a light receiving element is attached to the back side of the sensor hole 7f, and a plate-shaped filter 12 is provided on the front surface of the sensor hole 7f to receive the fitting recess 7g. It is to be fitted in the inside. This plate filter 12
Is for blocking visible light and covering the front surface of the infrared sensor 11 to improve the appearance. The plate filter 12 is first fitted into the fitting recess 7g,
After that, the protrusions 7h, 7h can be crushed by heating and pressing the protrusions 7h, 7h with a soldering iron or the like, and the side portions of the plate-shaped filter 12 can be locked at the crushed portions. The plate-shaped filter 12 is fixedly mounted in the fitting recess 7g via the. That is, the sensor frame 7 can be formed of a thermoplastic resin such as ABS independently of the back plate 2.

A temperature sensor 10 is mounted on the back side of the temperature sensor mounting cylinder portion 7e, and this temperature sensor 10 detects the temperature of the hand that is pushed out downward and detects the temperature of the heater provided in the outlet 4a. It controls the temperature. The outlet 4 a of the warm air fan 4 is provided with a pair of positioning claw pieces 7 protruding above the sensor frame 7.
It can be fitted and fixed between d and 7d, and when the sensor frame 7 is fixed to the frame mounting portion 2b, the positions of the positioning claw pieces 7d and 7d are also fixed, and the pair of positioning claw pieces 7d is fixed. By fitting the air outlet 4a into the air outlets 7d, 7d, the air outlet 4a of the hot air fan 4 can be properly positioned, and the hot air fan 4 can be positioned accurately and easily.

The sensor frame 7 is covered with the front cover 3, and the lower part of the front cover 3 has the sensor frame 7 as shown in FIGS. 4 and 13.
An opening 3a is formed at a position matching with the above, and a grid 3b is integrally formed in this opening 3a.
Therefore, the lower portions of the infrared sensor 11 and the temperature sensor 10 are covered with the grid 3b. The distance between the gratings 3b is such that a finger of a child or the like cannot enter, and moreover, the grating distance is such that the light projected from the infrared sensor 11 and the reflected light from the hand pass well and the detection is not affected. The grid spacing is set to about 7 mm, for example.

That is, the infrared sensor 11 of this example is shown in FIG.
As shown in FIG. 5, a condenser lens is used so that the pin spot light P can be projected downward, and it is configured so that infrared rays can be satisfactorily emitted downward by passing between the gratings 3b. Further, a sensor off-delay timer is provided in the control board 5, and since the detection area is narrow in the case of the pin spot light P, the warm air fan 4 is immediately stopped when the hand goes out of the detection area. To prevent this, the sensor-off delay timer is configured so that the operation of the warm air fan 4 can be continued unless the hand is separated from the detection area for 1.5 seconds or longer.

In this way, the sensors 11 and 10 are connected to the grid 3b.
Since there was a lid on the sensor, there was a person who used to stick gum on the sensor part or scratch it, especially in the restroom where many unspecified people enter and leave, such as in service areas. Sensor 1 that can be prevented well
The functions of 1 and 10 can be favorably maintained.

[0024]

According to the present invention, a cylindrical portion for drawing in a power supply line is formed on the back surface of a main body of a hand dryer installed on a wall surface of a toilet or the like, which is open to the wall surface side and projects to the front side opposite to the wall surface. At the front end of the tubular portion, a receptacle having an inclined portion whose upper surface is opened to allow water to flow out to the wall surface side is formed, so that the tubular portion for drawing the power line from the rear surface of the main body of the hand dryer is formed. When inserting the power supply line into the, the power supply line can be satisfactorily inserted inside along the inclined part at the front end, and if water enters the hand dryer, etc. It is possible to satisfactorily discharge the water to the back side through the portion, and it is possible to satisfactorily prevent water from adhering to the vicinity of the power supply terminal, which is particularly dangerous. Further, an opening hole such as a power line drawing hole is formed in the back surface of the main body of a hand dryer installed on the wall surface of a toilet or the like, and a V-shape for flowing water downward in the lower part of the wall surface side of the opening hole. Since the V-shaped groove is recessed, it is possible to satisfactorily prevent water from entering the opening hole from the back side through the V-shaped groove to the lower side and prevent water from entering the inside. Have an effect.

[Brief description of drawings]

FIG. 1 is a plan view showing a state in which a front cover of a hand dryer is removed.

FIG. 2 is a side configuration diagram of FIG.

FIG. 3 is a rear view from the back side of the hand dryer.

FIG. 4 is a bottom view of the hand dryer as viewed from below.

FIG. 5 is a front side plan view of a back plate of the hand dryer.

FIG. 6 is a plan view from the back side of the back plate.

7 is a cross-sectional view taken along the line AA of FIG.

8 is a cross-sectional view taken along the line BB of FIG.

9 is a sectional view taken along line CC of FIG.

10 is an enlarged view of part D in FIG.

FIG. 11 is a perspective view of the front side of the back plate as seen from above.

FIG. 12 is a perspective view of the back side of the back plate as seen from below.

FIG. 13 is a perspective view of a lower portion of the front cover.

FIG. 14 is a perspective configuration diagram of a sensor frame in an attached state.

FIG. 15 is a schematic configuration diagram of pin spot light projected from an infrared sensor.

FIG. 16 is a perspective view of a mounting member.

FIG. 17 is a schematic side view of a modification of the hand dryer in a mounted state.

[Explanation of symbols]

 1 Hand Dryer 2 Rear Plate 2a Intake Hole 2b Frame Placement Part 2d Abutment Projection Frame 2f Partition Projection Part 3 Front Cover 3b Lattice 4 Warm Air Fan 4a Air Outlet 5 Control Board 6 Terminal Block 7 Sensor Frame 7d Positioning Claw 7f Sensor hole 7g Fitting recess 7h Protrusion 8 Mounting bracket 8b Locking piece 10 Temperature sensor 11 Infrared sensor 12 Plate filter 21 Mounting bracket hole 22 Rib 23 Screw hole 24 Recess 25 Water escape port 25a Top opening 25b Slope 26 Power Supply Retracting Hole 27 V-Groove 28 Power Supply Retracting Cylinder 29 Receiving Port 29a Top Opening 29b Sloping Section 30 Protrusion 30a Draining Slanting Section 30b Ground Display

Claims (2)

[Claims] 1. A cylindrical portion 28 for drawing in a power supply line is formed on a back surface 2 of a main body of a hand dryer 1 installed on a wall surface of a toilet or the like and which is open to the wall surface side and projects to the front side opposite to the wall surface. A hand dryer having an inlet 29 having an inclined portion 29b whose upper surface is open so that water can flow out to the wall surface side, is formed at a front end of the tubular portion 28. 2. An opening hole such as a power line lead-in hole 26 is formed on the back surface 2 of the main body of the hand dryer 1 installed on the wall surface of a toilet or the like, and water is provided in the lower part of the opening hole on the wall surface side. A hand dryer characterized in that a V-shaped V-shaped groove 27 for flowing down is provided.