JPH083356Y2 - Hand dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a hand dryer for drying hands with warm air after washing them by hand.

(Prior Art) As this type of hand dryer, the one described in the specification and drawings of Japanese Patent Application No. 1-161659 (see JP-A-3-26222) previously filed by the applicant of the present application is is there.

This product has a warm air blowing nozzle with the blowing axis directed obliquely upward toward the back side of the counter to prevent water droplets blown from the hand by warm air from hitting the wall surface etc. at the back side of the counter. In order to prevent mischief such as pouring of water or stuffing of filth, a cover for opening and closing the hot air blowing nozzle is provided.

A cover opening mechanism that opens the cover and holds the open state is provided.The cover opening mechanism drives the motor by the user's detection of the detection means, and uses a gear or a cam that is interlocked with the motor. The structure is such that the cover is forcibly lifted and held at a predetermined open position, and the cover cannot be moved in the closing direction unless the motor is rotated in the reverse direction based on the disappearance of the detection by the detection means.

(Problems to be solved by the invention) Therefore, in the above hand dryer, the cover opening mechanism and the cover may be damaged when the cover is manually opened / closed by force, particularly when it is moved in the closing direction.

The present invention has been made in view of the above problems of the prior art, and an object thereof is to prevent the cover and the cover opening mechanism from being damaged even if the cover is slightly moved manually.

(Means for Solving the Problems) In order to achieve the above object, the hand dryer according to the present invention comprises:
In a hand dryer having a warm air blowing nozzle and a cover that covers the warm air blowing nozzle so that the cover can be opened and closed, and a cover opening mechanism that holds the cover in an open state, a cover is attached to the cover opening mechanism. A cushioning means is provided to absorb to some extent either one or both of the external force that urges the opening direction or the closing direction.

(Operation) In the hand dryer configured as described above, when the cover in the open / closed state is forcibly pushed down or pushed up by the hand, the force is absorbed by the cushioning means and the cover opening means or the cover is exposed. Unreasonable force is not applied.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1 to FIG. 5, A is a counter fixed to the wall surface C by an appropriate means, and a hand-washing device B equipped with a faucet device 6 is integrally incorporated therein. At the counter A, the main body member 7 of the hand dryer is placed on the counter A.
And a cover 2 that covers the main body member 7 in an openable and closable manner.

The main body member 7 is equipped with a warm air blowing nozzle 1, a first detecting means 8 and a second detecting means 9 and an air outlet.
Ten are provided.

The warm air blowing nozzle 1 is formed in the main body member 7 so as to penetrate vertically through the main body member 7 so that its blowing axis extends obliquely upward to the back side of the counter A, and has a cylindrical shape that projects toward the lower surface side of the main body member 7. It has a wind duct connection port 11,
The hot air duct connection port 11 penetrates the counter A and extends into the space 12 below the counter A, and is connected to the hot air supply port 141 of the hot air generator 14 via the hot air duct 13.

The warm air generator 14 has a conventionally well-known structure and form in which a heater 143 is provided at the outlet of the blower fan 142, and the warm air supply port is provided in the space 12 below the counter A.
The hot air supply port 141 and the hot air duct connection port 11 of the hot air blowing nozzle 1 are connected via a hot air duct 13 in a generally U-shape.

The warm air generator 14 is electrically connected to a control unit 15 described later, and the control unit 15 controls ON / OFF of the blower fan 142 and the heater 143.

Both the first detecting means 8 and the second detecting means 9 are photoelectric sensors, for example, projection light such as invisible infrared rays projected from a light projecting element hits an object to be diffused and reflected, and when the light receiving element receives the reflected light, a detection signal is received. The first detection means 8 is a front surface of the main body member 7, that is, the counter so that the projected light is horizontally projected toward the front side of the counter A. It is provided on the surface facing the front side of A.

Further, the second detecting means 9 is provided on the inclined surface formed in a rising shape on the main body member 7 on the inner side of the warm air blowing nozzle 1,
The projected light is projected slightly upward toward the front side of the counter A, and its optical axis is provided slightly above the warm air blowing nozzle 1 so as to intersect with the blowing axis of the nozzle 1.

Therefore, the first detecting means 8 detects when the user stands in front of the place where the main body member 7 is installed, and the second detecting means 9 detects that the hand is extended above the warm air blowing nozzle 1. This is detected.

Both of these detection means 8 and 9 are connected to a control unit 15 which will be described later. Thus, the detection signals of both detection means 8 and 9 are input to the control unit 15.

The air exhaust port 10 is opened obliquely downward from the rear surface of the main body member 7, that is, in the upper center of the surface facing the back side of the counter A, from that surface to the bottom surface, and the opening is opened in the counter A corresponding to the air exhaust port 10. Contact space space 12 below counter A via 16.

On the other hand, the cover 2 has a bowl-like shape having a size capable of covering the main body member 7 and covering the whole main body member 7, and has a projecting portion 17 at one location on the outer peripheral surface near the opening edge. The projecting portion 17 is rotatably pivoted by a shaft 19 to a pair of bearing portions 18 provided near the back portion of the main body member 7 of the counter A so as to cover the main body member 7 and to be provided in a fall shape.

Thus, the cover 2 is opened by the backward upward rotation to expose the main body member 7 to the front side of the counter A, and the forward downward rotation can cover the main body member 7.

Further, the cover 2 is partially cut away on the front side so that the first detecting means 8 can detect a person standing in front of the main body member 7 even when the cover 2 is closed.

The cover 2 is opened via a cover opening / closing mechanism 3 whose operation is controlled by a control unit 15 described later, and the opened state is a position where the cover 2 blocks the warm air blown from the warm air blowing nozzle 1. Moreover, the cover 2 is held at a position having a sufficient space for inserting a hand between the cover 2 and the outlet of the hot air outlet nozzle 1.

The cover opening mechanism 3 is controlled by the control unit 15 so that the first
A motor 31 that rotates a predetermined angle when a detection signal is generated by the detection means 8 and reverses the same angle when the detection signal disappears, and a fan-shaped cam 34 that is fixed to a rotation shaft 32 of the motor 31 and has meshing teeth 33 on its cam surface. , A gear 35 fixed to a shaft 19 that rotatably supports the cover 2 on a bearing portion 18, and an appropriate number of intermediate gears 36 that connect the gear 35 to the meshing teeth 33 of the cam 34, The shaft 19 is freely inserted into a bearing hole 20 provided in the protruding portion 17 of the cover 2, and is connected to the cover 2 via the torsion spring 4.

Thus, the cover opening mechanism 3 opens the cover 2 by rotating the motor 31 in the forward direction and holds the open state, and closes the cover 2 by rotating in the reverse direction.

When the cover 2 is opened and the cover 2 is forcibly closed by pressing the cover 2 with a hand or the like, the cover 2 rotates in the closing direction against the spring force of the torsion spring 4. When the urging force is released, the cover 2 returns to the original open position by the spring force of the torsion spring 4.

If the cover 2 is pulled up by hand when the cover 2 is closed, or if an unreasonable force is applied in the opening direction when the cover 2 is open, the cover 2 is opened in the opening direction against the spring force of the torsion spring 4. However, when the external force applied to the cover 2 is released, the spring force of the torsion spring 4 restores the original closed or open position as described above.

The control unit 15 is provided at a proper place in the space 12 below the counter A, inputs the detection signals from the first detection unit 8 and the second detection unit 9, and drives the motor 31 in the forward direction by the detection signals of the first detection unit 8. The fan fan 142 and the heating heater 143 of the warm air generator 14 are operated by inputting the detection signal of the second detecting means 9 and the detection signal of the second detecting means 9 disappears, and the blowing fan 142 and the heating heater are rotated. 143
Is stopped, and the motor 31 is rotated in the reverse direction by a predetermined angle when the detection signal of the first detection means 8 disappears.

Next, FIGS. 6 to 7 and FIGS. 8 to 10 show another embodiment of the cover opening mechanism 3.

In the embodiment shown in FIGS. 6 to 7, the cover opening mechanism 3 is rotated by a predetermined angle when the detection signal of the first detection means 8 is generated, and is reversed by the disappearance of the detection signal. Cam 34 fixed to rotating shaft 32
And the upper end abuts the protrusion 17 of the cover 2 penetrating through the counter A, and the lower end abuts the cam surface 34 'of the cam 34 via the rotating roll 37 provided in the cover 2. Rod 38, which has a guide hole in the axial direction.
A first member 382 having an opening 381, and a second member 383 slidably inserted into the guide hole 381 and added to the first member 382.
The coil spring 5 is elastically mounted between the two members 382 and 383 to urge the second member 383 upward.

Thus, in this embodiment, the rotation of the motor 31 in the predetermined direction causes the cam 34 to push up the rod 38, and the rod 38 pushes up the cover 2 to open the cover 2 and maintain the open state. Inverted by cam 34 rod 38
The push-up force is released to lower the rod 38, and the cover 2 is lowered and closed accordingly.

Further, when the cover 2 is opened and the cover 2 is forcibly closed by pressing the cover 2 with a hand, the second member 38 of the rod 38
3 sinks into the guide hole 381 of the second member 382 against the spring force of the coil spring 5, and absorbs the biasing force in the direction of closing the cover 2.

Next, in the embodiment shown in FIGS. 8 to 10, the cover 2 is generated by the force of the air blown from the warm air blowing nozzle 1.
To open the cover, and open the cover
Is held by the cover opening mechanism 3 and the cover 2
Of the cam 40 mounted on the shaft 19 of the cam 40 and the notch formed in the cam surface 40 'at the cover open position by being elastically pressed against the cam surface 40' by being urged upward by the spring 41 provided below the cam 40. The lock pin 43 is engaged with the portion 42, and the solenoid 44 pulls the lock pin 43 downward against the force of the spring 41 by the attraction force generated by power feeding.

Further, in this embodiment, the control unit 15 causes the blower fan 142 of the warm air generator 14 to be detected by the user of the first detection means 8.
The heater 143 is operated by the hand detection of the second detector 9, and the blower fan 142 and the heater 143 are stopped by the detection of the first and second detectors 8 and 9, respectively.
At the same time, power is supplied to the solenoid 44 for a predetermined time.

In this embodiment, when the first detecting means 8 detects the user, the blower fan 142 of the warm air generator 14 operates to blow out the air from the warm air blowing nozzle 1. Then, the cover 2 is blown up and opened by the force of the wind. At this time, when the cam 40 rotates in conjunction with the rotation of the shaft 19 accompanying the upward rotation of the cover 2 and reaches the cover open position, the cam surface 4
The notch 42 of 0'and the lock pin 43 engage with each other to lock the open state of the cover 2.

Then, when the detection by the first and second detecting means 8 and 9 is lost, the blower fan 142 is stopped and the blowing of the wind from the warm air blowing nozzle 1 is stopped, and the solenoid 44 generates a suction force to pull down the lock pin. Since the engagement between the lock pin 43 and the notch 42 of the cam 40 is released, the cover 2 pivots downward due to its own weight and closes.

When the cover 2 is forcibly closed when the cover 2 is open or when the cover 2 is further moved in the opening direction, the lock pin 43 is pushed down against the spring 41 to absorb the force.

 The time chart of this embodiment is shown in FIG.

(Effect) Since the present invention has the above-mentioned configuration, it has the following effects.

The cover opening mechanism that opens the cover and holds the open state is provided with a cushioning means that absorbs the force for urging the cover in the opening direction and the closing direction or the force for urging the cover in either the opening direction or the closing direction. Since the cover is provided, even if the cover is forcibly opened or the cover is forcibly closed by pushing down the cover while holding the cover open, the urging force is absorbed by the cushioning means and the cover or cover is closed. Unreasonable force is not applied to the opening means, and damage to these is prevented.

[Brief description of drawings]

FIG. 1 is a side view of an essential part of a hand dryer according to the present invention, with one part cut away. 2 is an enlarged sectional view taken along line II-II of FIG.
FIG. 3 is a sectional view taken along the line III-III in FIG. 2, FIG. 4 is a side view showing the outline of the overall structure of the hand dryer, FIG. 5 is a perspective view of the state where it is installed on the counter, and FIG. In the side view of the main part showing an embodiment, a part is cut away. FIG. 7 is an enlarged cross-sectional view of the main part. FIG. 8 is a side view of a main part showing still another embodiment, which is partially cut away. FIG. 9 is an enlarged cross-sectional view of the main part, and FIG. 10 is a time chart. A: Counter, B: Handwasher 1: Warm air blowing nozzle, 2: Cover 3: Cover opening means 4: Torsion spring (buffer means) 5: Coil spring (buffer means) 41: Spring (buffer means)

Claims (1)

[Scope of utility model registration request] 1. A hand dryer comprising a hot air blowing nozzle and a cover for opening and closing the hot air blowing nozzle, which is installed on a counter and which has a cover opening mechanism for holding the cover in an open state. A hand dryer comprising a cover opening mechanism provided with a cushioning means for absorbing either one or both of external forces for urging the cover in the opening direction or the closing direction.