JPS5811209B2 - hand towel dispensing device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a hand towel web dispensing device.

A hand towel dispensing device with a new hand towel reel and a used towel reel has a hand towel taut on the underside of the housing when each of its parts is ready for use and at rest. It is desirable to keep it at

Such hand towel dispensing devices are well known.

Furthermore, in these applications, not only is a new hand towel dispensed at the time of use, but the front section also feeds out the length of the used towel so as to form a ring of fresh hand towels. This is desirable.

When using a towel braking flap that smooths and tensions the towel running to the used towel reel, it is advisable to remove this flap from the hand towel path when dispensing is required so that it does not interfere with operation. .

It is also well known to operate the dispensing rollers for dispensing fresh hand towels and the retracting devices for dispensing and withdrawing used towels by electric motors.

It is an object of the present invention to dispense fresh hand towels and used hand towels to form a ring without being obstructed by the hand towel braking flap;
Easy and reliable control of the electric motor drive means of the dispensing and retracting roller and the movement of the hand towel braking flap so that the used hand towel can be drawn in when the hand towel braking flap is in the actuated position. To provide a hand towel dispensing device with flexible control means.

This object of the invention is such that when dispensing a ring of hand towels, the cam drum 35 is first operated to switch on the dispensing roller 6 and move the hand towel braking flap to its inoperative position. It is supposed to be done.

This is accomplished by the hand towel dispensing device as claimed.

The hand towel brake flap 28 is therefore reliably held in said inactive position when the cam drum 35 subsequently (second position) switches on the retraction roller 7 in the dispensing direction.

The hand towel brake flap is then released to return to its operative position and a new second length of hand towel is dispensed.

In this way, the hand towel brake flap 28 is reliably held in the operating position when the cam drum 35 subsequently (last position) switches on the retraction roller 7 to draw the used hand towel into the housing.

In order to increase the reliability of operation, it is advantageous to use positioning means provided to determine the position of the adjustment piece or towel brake flap.

Embodiments of the baby towel dispensing device of the present invention will be described in detail below with reference to the accompanying drawings.

The dispensing device according to the invention, illustrated in FIG. 1, comprises a housing having a rear wall 1 for attachment to the wall of a toilet, for example, a housing top 2 and a housing bottom 3.

The bottom part 3 of the housing is countersunk and has a new shape in the shape of the reel 4.
Accept sources of hand towels.

Two side mounting plates 5.5, only one of which is shown, are fixed to the rear wall 1.

A rotatable dispensing roller 6 and a retracting roller 7 are arranged between the numbered plates 5,5.

Fresh hand towels from the reel 4 can be dispensed from the housing by means of a dispensing roller 6.

The path 8 of this towel is indicated by a chain line.

The dispensing roller 6 can be driven by an electric motor 10 via a worm gear 15 .

Electric motor 10 has been omitted from FIG. 1 but is shown diagrammatically in FIG.

A used towel roll 9 is arranged above and in contact with the drawing roller 7, and is driven by the roller 7 to draw the used towel into the housing and wind up the towel.

Although not shown in FIG. 1, the electric motor 11 diagrammatically illustrated in FIG.
used to drive.

The worm gear 21 is provided with a protrusion 22 which cooperates with a switch 23 (FIG. 2) and activates the switch 23 once for each revolution of the roller 7.

The programming wheel 17 is the worm gear 1 of the dispensing roller 6
5 through a pinion 16 with a transmission ratio of 1:2.5.

Programming wheel 17 has two projections 18 and 19 which cooperate with switch 20 (FIG. 2).

Furthermore, the programming wheel 17 is provided with an eccentric cam 26 which cooperates with the front end of an adjustment piece or thrust rod 27 mounted for horizontal movement along the mounting plate 5.

The rear end of the thrust rod 27 cooperates with an arm piece 29 attached to the pivot axis of the hand towel brake flap 28.

The flap 28 is configured to transport the used hand towel to the rear wall 1 of the housing when the used hand towel advances to the reel 9.
Between the two protrusions 3L32 provided on the arm 29, this hand towel is pressed under the action of a tension spring piece associated with the arm piece 29 in order to smooth and tension it.

The hand towel dispensing device illustrated in FIG. 1 is equipped with a programming control shown diagrammatically in FIG.

The programming control device includes ten control switches S1 to S10 operated by a rotating drum or cam drum 35 forming each cam.

The cam drum 35 has 12 different angular positions (
(separated from each other by an angle of 300 degrees), and are successively brought to these positions by a step motor 36.

FIG. 3 shows which of the switches S1 to S10 is held closed by each cam at different positions on the cam drum 35.

The step motors 36 can be activated by different control circuits.

One of these circuits is provided with a delay device 37, and the other is provided with a manual switch or switching device 38.

The programming control device includes the switch 20.2 described above.
In addition to 3, a switch 39 that is activated by a protrusion of the thrust rod 27 when the thrust rod 27 (Fig. 1) is pushed rearward by the cam 26, and a hand towel braking flap 28 are installed between the respective protrusions 31 and 32. A switch 41 is provided which is actuated by an arm piece connected to the hand towel braking flap 28 when pushed out against the action of the spring piece 30 by a stretched hand towel.

The operation of the hand towel dispensing device of the present invention will be described below.

When each part is in a rest position ready for operation.

In this case, the hand towel used by the previous user is wound up on the reel 9, and the hand towel 8 is transferred to the dispensing roller 6 and the reel 9.
Pull it over the bottom 3 of the housing between.

The cam drum 35 is at position O0 (FIG. 3).

Subsequently, switch S2 and i of switches S1 to S10 are closed and a positive voltage is applied to switching device 38.

The switching device 38 is, for example, a light-responsive unit, a proximity switch, a contact switch, a pushbutton or the like.

Upon actuation of the switching device 38 by a new user (or upon mere approach of the new user), the dispensing of hand towels begins.

Switching device 38 activates stepper motor 36 to rotate cam drum 35 to position 30°.

This position 30° is the first primary operating position.

In this first main operating position of the cam drum 35:
New hand towel dispensing switch S3 and switch S
Close 6.

A positive voltage is applied to the dispensing motor 10 via the switch S3 for dispensing a new hand towel. The portion is drawn out from the reel 4 and fed out from the housing for dispensing.

At the same time, the program wheel 17 is decelerated to a ratio of 2.5.
The cam 26 pushes the thrust rod 27 backward by turning it in pairs.

Therefore, the hand towel braking flap 28 is connected to each projection 31.
32 is released against the action of the spring piece 30.

Additionally, thrust rod 27 actuates switch 38 and connects switch 20 to closed switch S6.

The switch 20 itself is activated by the protrusion 1 as soon as the program wheel 17 has made about 1/2 revolution and the dispensing roller 6 has made about 1.25 revolutions.
9 to energize the step motor 36.

Step motor 36 rotates cam drum 35 to position 60°.

This position 60° is the second primary operating position.

In this second primary operating position, used hand towel dispensing switch S4 and switch S5 are closed.

The electric motor 11 is a switch S for dispensing used hand towels.
4, a positive voltage is applied to rotate the retracting roller 7 in the unwinding direction so that a predetermined length of the used hand towel is dispensed from the reel 9.

Dispensing of the used hand towel is facilitated because the hand towel braking flap 28 is separated from the used hand towel.

After the retraction roller 7 makes one revolution at most, the protrusion 22 moves to the switch 2.
Activate 3.

In this case, switch 23 is powered via switch S5 and sends a switch-on signal to stepper motor 36.

In the 90° position of the cam drum 35, the used hand towel dispensing switch S4 and the switch S5 are closed again and the same process takes place as in the 60° position, i.e. the used hand towel is drawn into one rotation of the retracting roller 7. Pay out the corresponding length again, then cam drum 3
5 is moved again by the step motor 36.

In position 120° of the cam drum 35 (ie the third primary operating position), the new hand towel dispensing switch S3 and the switch S7 are closed.

The dispensing motor 10 is energized with a positive voltage via the new hand towel dispensing switch S3, causing the motor 10 to turn the dispensing roller 6 and dispensing a second length of fresh hand towels.

At the same time, the program wheel 17 also rotates further.

The cam 26 is therefore discoupled from the thrust rod 27 and the towel brake flap 28 returns to the active or operative position shown.

Switch 39 is also released in this case, returning to the position shown connecting closed switch S7 to switch 20.

The switch 20 therefore sends a switch-on signal to the stepper motor 36 as soon as it is actuated by the projection 18 after 1/2 revolution of the program wheel 17.

In position 150 DEG of the cam drum 35 (ie the fourth main operating position), only a signal is sent to the delay device 37 via the switch S1.

A predetermined delay period then begins during which the user can dry his or her hands on a loop of hand towels that hangs from the housing.

This ring is unwound from the reel 9 and
and a new hand towel of length corresponding to 2.5 revolutions of the dispensing roller 6 or somewhat less.

After the first half of the predetermined period of use has elapsed, the delay device 3
7 sends a signal to the step motor 36, which rotates the cam drum 35 to a position of 180°.

In position 180° the switch S1 again signals the delay device 37, followed by the second half of the period of use.

This is followed by turning the cam drum 35 to position 210°.

This position 210° is the last primary operating position.

At the position 210° of the cam drum 35, switch S
5 and the draw-in switch S9 are closed.

The pull-in switch S9 applies a negative voltage to the pull-in motor 11.

Therefore, in this case, the retracting roller 7 is rotated in the retracting direction (winding direction) and the used hand towel is wound onto the reel 9.

After one rotation of the retracting roller 7, the protrusion 22 moves to the switch 23.
operate.

Switch 23 is powered via closed switch S5;
A switch-on signal is sent to the step motor 36.

Cam drum 35 positions 240°, 270° and 300°
° (each of these positions being an additional final actuation position), switch S5 and retraction switch S9 are
Closed as in the 10° position, the used hand towel is then drawn in and rolled up for a length corresponding to one revolution of the retraction roller occurring in each position.

In this case, the towel braking flap 28 is in the operative position shown, smoothing and tensioning the towel advancing on the reel 9.

When the hand towel between each protrusion 31,32 is tensioned during retraction, for example by holding it taut by the user, the hand towel brake flap 28 actuates the switch 41.

In this case, the switch 41 temporarily cuts off the circuit of the electric motor 11 until the hand towel is loosened.

At the position 330° of the cam drum 35, switch S1
, the draw-in switch S9 and the switch S10 are activated.

The retracting motor 11 is powered again by the retracting switch S9, and the hand towel is wound up.

After approximately 1/2 revolution of the retraction roller, or approximately 41 revolutions in total, the previously dispensed hand towel is drawn in and rolled up, and this towel is once again rolled along the underside of the housing. Tense, the hand towel brake flap 28 activates the switch 41.

Activation of switch 41 interrupts the current to motor 11 and simultaneously sends a switch-on signal to stepper motor 36 via switch S10, which is closed in this case.

In this case, the cam drum 35 is further moved to a position of 360° or 0°.
Turn to °.

The dispensing device thus returns to its rest position in its operating state.

Only then can the switching device 38 be reactivated and reactivated via switch S2.

The retracting roller does not complete four rotations during the retracting operation, and therefore the cam drum 35 is rotated from the position 210° to each position 240°.
, 270°, 300° and 330° to reach position 360°.

Therefore, switch S2 cannot be closed and switching device 38 cannot be activated.

In this way, the dispensing motor 10 is driven until a predetermined length of used hand towel (corresponding to 4 revolutions of the retraction roller and approximately 8/9 the length of the previously dispensed towel) is drawn in. , and then the taut towel actuated switch 41 is inhibited until it produces a sinch-on signal via switch S10.

When switching off the electric motor 10, the dispensing roller 6
is connected to the electric motor 10 via a worm gear, so it stops.

Once the hand towel supply or reel 4 has been used and the towel ends hang from the housing for final use, all remaining towels are wound onto reel 9 following this use.

The reason is that the retraction motor 11 simply continues to turn, since the towel is no longer taut and therefore the switch 41 is not actuated in position 330° of the cam drum 35.

In such a case, the retraction motor 11 is finally stopped by the delay device 37 after a predetermined time period has elapsed.

Delay device 37 applies the signal it receives via switch S1 at position 330° to stepper motor 36 at position 360.
Perform indexing to °.

The previously mentioned switch S8, which remains closed in all positions of the cam drum 35 other than 0°, has the effect of moving the cam drum 35 to the 0° position when the dispensing device is opened, regardless of the program phase in this case. I only have

Switch S8 cooperates with a cover switch (not shown).

It goes without saying that the present invention can be modified in kind without departing from its spirit.

[Brief explanation of drawings]

FIG. 1 is a side view showing one embodiment of the dispensing device of the present invention with the housing side wall omitted, FIG. 2 is a block diagram of the control device of the dispensing device of FIG. 1, and FIG. FIG. 3 is a diagram illustrating the operation of the switch actuating drum of the control device; 4... Reel (towel supply source), 6... Dispensing roller, 7
...Retraction roller, 10.11...1 electric motor, 26...
Cam, 27... Thrust rod (adjustment piece), 28... Towel brake flap, 35... Cam drum, 37... Delay device.

Claims (1)

Claims: 1. A housing containing a supply of fresh hand towels that can be withdrawn and dispensed by a motorized dispensing roller, and operable to draw used hand towels into the housing. At the same time, there is an electric retracting roller that can be operated in the opposite direction to dispense the used hand towels from the housing, and the hand towels moving toward the retracting roller are flexibly pressed and deflected, and the towels are pulled taut by Fumiko et al. a hand towel braking flap configured to brake the hand towel; and for dispensing the used hand towel, the baby towel braking flap is moved away from the path of the used hand towel and deactivated. to bring it into position,
an actuatable adjustment piece; an eccentric cam coupled to the dispensing roller to actuate the adjustment piece; and a cam drum having a plurality of cams. a programming control device (FIG. 2) comprising: dispensing a first length of fresh hand towel to the plurality of cams and moving the baby towel damping flap to its inactive position; a cam which closes a new hand towel dispensing switch S3 in a first main operating position of said cam drum so as to energize an electric motor for driving said dispensing roller; actuating the retraction roller in the opposite direction to dispense a length of
a cam for closing a used hand towel dispensing switch S4 in a second primary operating position of said cam drum, and for dispensing a second length of fresh hand towel and releasing said baby towel brake flap; a cam for closing the new hand towel dispensing switch S3 again in a third main operating position of the cam drum so as to energize the electric motor for driving the dispensing roller; In order to keep each electric motor for driving the giving roller and the pulling roller in a non-operating state,
a cam for holding open the new hand towel dispensing switch S3 and the used hand towel dispensing switch S4 in a fourth primary operating position of the cam drum; at least one of said cam drums to actuate a retraction roller;
Retracting switch S in two final main operating positions
A hand towel dispensing device characterized in that it is provided with a cam for closing 9.