JPH01123393A - Shutter switching mechanism for vending machine - Google Patents

Abstract

PURPOSE: To prevent a user from getting injured even when his/her hand is caught in the middle of closing a shutter by mutually linking a link for opening/closing shutter and the shutter and energizing the shutter by a spring so as to be closed. CONSTITUTION: Since a shutter 2 is energized by the spring in the closing direction, even when the hand is caught in the middle of closing, the state of supporting the force of the shutter spring on the hand is just provided, the shutter is not closed any more, and the user does not get injured. Besides, since the opening/closing state of the shutter 2 is detected by 1st and 2nd switches 23 and 24, when both the switches 23 and 24 do not detect the shutter 2 is closed, a control circuit judges abnormality and immediately opens the shutter so that a sales standby state can be recovered. Therefore, danger to continue the vending action while catching the hand in the shutter 2 can be avoided. Besides, when links 15 and 16 for opening/closing shutter are set at closing positions and the shutter 2 is closed, a lock plate 9 blocks the move of links to the opening direction and locks the links at these positions so that possibility for the shutter 2 to be opened during cooking and for the hand to be inserted into a vend stage 1 can be eliminated.

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention provides a vending machine, particularly a cup containing raw materials and hot water.
This invention relates to a shutter-opening mechanism suitable for a cup-type beverage vending machine in which water, ice, etc. are charged and stirring and cooking are performed directly in the cup.

Conventional technology> A cup-type beverage vending machine automatically or manually places a cup on a bend stage, stirs the ingredients and hot water using a mixing bowl or mixer, and then inserts the cup into the cup via a hose. Those configured for injection are common. However, in a vending machine with such a configuration, the raw material may be poured into the cup before it is completely dissolved, and the beverage tends to stick to the hose, resulting in an unfavorable sanitary condition.

Stir the ingredients, hot water, water, etc. in the cup and W! 4J! l! A vending machine that directly performs this was developed to solve these problems, and the internal 8
! The structure advances to the bend stage where various cooking operations such as stirring are performed. Therefore, in order to prevent danger or tampering with the internal mechanism during the vending operation, the bending stage is generally provided with a shutter that opens and closes automatically.

<Problems to be solved by the invention> When a shutter that opens and closes automatically as described above is provided,
If your hand gets caught while the shutter is closing, you may be injured, and it is extremely dangerous if the sales operation continues in this state. Furthermore, there is a possibility that a closed shutter may be forcibly opened, and the conventional shutter opening/closing method tUt is insufficient in terms of preventing danger.

The present invention has been made in view of these problems, and aims to provide a shutter opening/closing mechanism that eliminates the danger of hands being caught, and which locks the shutter after it is closed.

<Means for Solving the Problems> In order to achieve the above object, the shutter opening/closing mechanism of the present invention includes a shutter opening/closing link and a shutter that are interconnected and biased in the closing direction by a spring. The shutter of the pend stage is configured to open by rotating the shutter cam by a motor and moving the link in the opening direction against the urging force, and further includes a first switch for detecting the rotation angle of the shutter cam. A second switch detects the position of the shutter opening/closing link, and a lock plate rotates together with the shutter cam to prevent the link from moving in the opening direction when the link is in the closed position.

<Function> Since the shutter is biased by a spring in the opening direction, ■ Even if your hand gets caught while closing, your hand will only support the force of the shutter spring and will not close any further, preventing injury. Never. In addition, @1 and the second switch detect whether the shutter is open or closed, so if both switches do not detect that the shutter is closed, the control circuit determines that there is an abnormality and immediately opens the shutter. It becomes possible to return to the standby state, and it is possible to avoid the danger of continuing the sales operation even though the user's hand is caught in the shutter 7.

In addition, when the shutter opening/closing link is in the closed position and the shutter is closed, the lock plate prevents the link from moving in the opening direction and locks the link in that position, so the shutter cannot be opened during cooking. There is no possibility of a hand being inserted into the pend stage.

<Example> Next, one embodiment shown in the drawings will be described.

In the figure, 1 is a bend stage, 2 is a shutter, and 3 is a VS7 angle. The bend stage 1 is fixed at one end of the 1 is rotatably attached. 4 is a shutter board fixed to the vS angle 3, 5 is a cam board fixed to the shutter board 4, 6 is a motor board fixed to the cam board 5, and the shutter motor 7 is connected to the motor board 6 with a reduction gear. It is fixed via a cover 78 of the section. 8 is a shutter cam, 9 is a lock plate, 10 is a switch cam plate, and 11 is a cam shaft.The cam shaft 11 passes through the cam board 5, and the lower end is connected to the slag receiver 12 attached to the shutter board 4, and the cover 7a
The upper end of the shutter cam 8 is rotatably supported at the output end of the camshaft 11 by means of welding or the like.
The lock plate 9 is screwed to the camshaft 11 via the sleeve 9a, and the switch cam plate 10 is attached to the sleeve 1.
It is screwed to the camshaft 11 via 0a. 13 and 14 are bushings for eliminating play in the camshaft 11.

15 and 16 are links for opening and closing the shutter connected by a pin 17, and the other end of the link 15 is inserted into the cam board 5 and held by the side plate 18, and a roller 1 is attached to the end of the link 15.
9 is provided, and the other end of the link 16 is connected to the shutter 2 with a pin 20. Reference numeral 21 denotes a shutter spring that is hung between the pin 21a provided on the link 15 and the S angle 3, and constantly biases the link 15 in the right direction in the figure and therefore the shutter 2 in the clockwise direction, that is, in the closing direction. The roller 19 is brought into contact with the peripheral edge of the shutter cam 8 due to this biasing force.

This shutter cam 8 is approximately egg-shaped, and the figure shows the links 15 and 16 in the rightmost closed position and the shutter 2
shows a closed state, and the roller 19 is in sliding contact with the short diameter portion 8a of the shutter cam 8. Also, switch cam plate 1
0 has two four parts 10a at an interval of 180° on the circumference of the disk.
The four parts 10a are fixed to the camshaft 11 so as to face in the same direction as the short diameter part 8a and the long diameter part 8b of the shutter gum 8.

Further, the lock plate 9 is a narrow plate bent into an L shape, and is fixed to the cam shaft 11 so as to face the same direction as the short diameter portion 8B of the shutter cam 8, and its tip is connected to the link 15.16.
is positioned outside the roller 19 when it moves to the rightmost closed position.

Reference numeral 23 designates an operating switch (first switch) that indirectly detects the rotation angle of the shutter cam 8 by arranging its operating piece 23a to correspond to the periphery of the switch cam plate 10, and 24 indicates its operating member Z4a. This is a closing switch (second switch) that detects the position of the link 15 by arranging it in correspondence with the protrusion 15a of the link 15.

This embodiment has the configuration described above, and its operation will be explained next.

When the vending machine is in the standby state, the shutter cam 8 is in a state reversed by 180 degrees from the illustrated position, and pushes the roller 19 with the long diameter portion 8b, and moves the link 15 to the leftmost open position against the shutter spring 21. position, and the shutter 2 is open.

When a coin is inserted into an operation section (not shown), a select switch is pressed, etc., a signal is input to the motor 7, the motor 7 is driven, and the camshaft 11 is rotated. As a result, the operating piece 23a of the operating switch 23 rides on the circumference of the switch cam plate 10, the operating switch 23 is turned on, and the signal is self-maintained.

Then, the shutter cam 8 rotates and the roller 19 moves to the short diameter portion 8.
As the link 15 approaches point a, the link 15 moves to the right due to the urging force of the urging spring 21, and the shutter 2 rotates clockwise to the closed state as shown in the figure. Immediately before entering the closed state, the close switch 24 detects the protrusion 15a and turns on, and then the actuation piece 23a of the operation switch 23 detects the recess 10a of the switch cam plate 10 and turns off, turning these switches off. Due to the operation, a control unit (not shown) detects that the shutter 2 is closed and stops the motor 7, and performs a predetermined sales operation.
That is, processing such as supplying a cup, adding raw materials, hot water, water, etc., and stirring are performed. Even if you try to forcefully open the shutter 2 during this process, the link 15 cannot move to the left because the lock plate 9 is located outside the roller 19 as shown in the figure.
The shutter 2 is locked and cannot be opened. When the processing is finished, the internal mechanisms such as the stirring mechanism are moved back, the motor 7 is driven again, the cam 11 rotates half a rotation, and the shutter 2 is opened.

On the other hand, if your hand gets caught in the shutter 2 while the camshaft 11 is rotating and the shutter 2 is closing, the shutter 2 will stop, the link 15 will not move to the right, and the close switch 24 will close. Since the protrusion 15a cannot be detected, it remains off, the shutter cam 8 and the switch cam plate 10 rotate to the closed position, and the operation switch 23 turns off. Therefore, in such a case, the control section determines that there is a shutter trouble, and performs control such that the camshaft 11 is further rotated half a turn to open the shutter 2, and the product is returned to the sales standby state.

<Effects of the Invention> As is clear from the embodiments described above, in the present invention, the shutter opening/closing link and the shutter are interconnected and biased by a spring in the closing direction, and the upper shutter cam is rotated by the motor. In a vending machine in which the shutter of the pend stage is opened by pushing the link in the opening direction against a biasing force, the shutter opening/closing link includes a first switch for detecting the rotation angle of the shutter cam, and the shutter opening/closing link. The lock plate is provided with a tJS2 switch that detects the position of the shutter cam, and a lock plate that rotates together with the shutter cam and prevents the link from moving in the opening direction when the link is in the closed position.

Therefore, even if your hand gets caught while the shutter is closing, injury can be prevented. Furthermore, since the open/closed state of the shutter can be reliably detected by the combination of the on/off state of the PIS1 and the second switch, it is possible to avoid the danger of continuing the sales operation even though the shutter is closed. In addition, when the shutter is closed, the link is locked and the shutter cannot be opened during cooking, so there is no danger of hands etc. being inserted into the pend stage during the vending operation or tampering with the internal mechanism. In particular, as mentioned above, by putting raw materials, hot water, water, ice, etc. into a cup and stirring and cooking them directly in the cup. This solves the various problems encountered in cup-type cooking vending machines.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of an embodiment of the present invention, and FIG. 2 is a partially cutaway front view of the same embodiment. 1...Bend stage, 2...Nyatta 7...
Shutter motor, 8...Shutter cam 9...Lock plate, 10...Switch cam plate 11...Cam shaft

Claims (1)

[Claims] 1. The shutter opening/closing link and the shutter are connected to each other and are biased by a spring in the closing direction, and a motor rotates the shutter cam and moves the link in the opening direction against the biasing force, thereby creating a bend. In a vending machine configured to open a shutter on a stage, a first switch detects the rotation angle of the shutter cam, a second switch detects the position of the shutter opening/closing link, and a second switch rotates together with the shutter cam to detect the rotation angle of the shutter cam. A shutter opening/closing mechanism for a vending machine, comprising a lock plate that prevents the link from moving in the opening direction when the link is in the closed position.