JPH0624936Y2 - Product delivery device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a product dispensing device used in a vending machine, which is intended to be compact and to maintain smooth operation.

(Prior Art) With reference to FIG. 12 to FIG. 16 of the drawings, a schematic structure of a conventional product dispensing apparatus will be described.

Reference numeral 2'denotes a commodity, which is housed in the stocker 1'in a vertically stacked manner.

Reference numeral 15 'is a first restrictor, which is swingable about the horizontal axis and engages with the lower surface of the lowermost product 2'by swinging, and in the direction of disengagement with that product by the action of gravity. Being energized.

Reference numeral 18 'is a second regulating body which is swingable about the horizontal axis and is engaged with the side surface of the second product 2'from the bottom layer by the swing, and is engaged with the product by the action of gravity. It is biased in the releasing direction.

Reference numeral 31 'is a cam, which is composed of a first cam 33' and a second cam 34 ', and both cams 33', 34 'are semicircular in plan view. Each of the cams 33 ', 34' is attached to the vertical shaft 30 'with a vertical interval, and the vertical shaft 30' is rotated by a motor 28 'connected to the upper end of the vertical shaft 30'. The cam 31 'is rotationally driven about the vertical axis.

The first cam 33 'can be engaged with and disengaged from the first restricting body 15', and by the engagement thereof, the first restricting body 15 'is engaged with the product 2'and its swing due to gravity is restricted so that the product 2' It can be prevented from falling.

The second cam 34 'can be engaged with and disengaged from the second restricting body 18', and by the engagement thereof, the second restricting body 18 'is engaged with the product 2'and its swing due to gravity is restricted. The product 2'can be prevented from falling by sandwiching it with the wall surface of the stocker 1 '.

The first cam 33 'and the second cam 34' are attached to the vertical shaft 30 'so that their linear portions are opposed to each other in plan view as shown in FIG. This allows the cam
Reference numeral 31 'is rotationally driven in the direction of arrow A in FIG. 13 so that the first restricting body 15' engages with the second restricting body 18 'when the first restricting body 15' engages with the product. Fig. 12 and fig.
The standby position shown in FIG. 13, the drop preparation position shown in FIG. 14 in which both the restriction members 15 ′ and 18 ′ are in the engagement position with the product, and the first restriction member 1
5'is a disengagement position with the product and the second restricting body 18 'is in the engaging position as shown in the fifteenth illustrated dropping position, and both restricting bodies 15', 18 'are in the engaging position with the product In the illustrated return preparation position,
It is shaped so that it can be positioned sequentially.

With the above configuration, when both the restricting bodies 15 'and 18' are in the drop position, the lowermost product 2'is dropped and paid out.
At this time, the second product 2'from the bottommost layer does not drop because it is engaged with the second regulation body 18 'at the drop preparation position. And when it comes to the standby position again, the second regulation body
The engagement between 18 'and the product 2'is released, and all the products 2'fall downward. At this time, since the first regulating body 15 'is in the engagement position with the product 2'at the return preparation position, all the products 2'will fall by one layer. As a result, the products 2'are sequentially paid out from the lowest layer.

(Problems to be Solved by the Invention) In the related art, the cam 31 'is rotationally driven about the vertical axis. Therefore, the drive motor 28 'is positioned above so as not to interfere with the fall of the product. Then,
The vertical shaft 30 ', which is the drive shaft of the cam 31', is a stocker.
It is straighter than the height of 1'in the vertical direction. Therefore, the payout device becomes large. Further, the engagement reaction force when the cam 31 'is engaged with each of the restriction bodies 15' and 18 'acts on the lower end of the vertical shaft 30' via the cam 31 '. Then, since the shaft length of the vertical shaft 30 'is long, it is easy to bend,
In addition, a large unbalanced load acts on the shaft of the motor 28 ', and there is a possibility that the operation may not be performed smoothly due to long-term use. Also, in order to reduce the bending of the vertical shaft 30 ',
By providing a bearing that rotatably supports the lower end of the vertical shaft 30 ′ and supporting the vertical shaft 30 ′ at both upper and lower ends,
It is necessary to arrange a bracket or the like for mounting the bearing under the stocker 1 '. Therefore, in this case, the bracket or the like may interfere with the falling product 2'or the swinging first restricting body 15 ', which is structurally restricted and the number of parts is increased. It was

In view of the above, it is an object of the present invention to provide a product dispensing device that can reduce the influence on the reaction force acting on the drive shaft of the cam and can be made compact.

(Means for Solving Problems) The feature of the technical means taken by the present invention to solve the problems of the prior art is that among the products 2 stored in the stocker 1 in a vertically stacked form. A first restricting body 15 that engages with the lowermost product 2 in a disengageable manner from below, and a second restricting body 18 that presses and holds the upper product 2 of the product 2 to be dispensed from the side surface, In the product dispensing device configured to press the product 2 on the upper surface of the second regulator 18 when the product 2 is dispensed from the lower layer by disengaging the first regulator 15, the upper end of the first regulator 15 Part and the lower end of the second regulator 18 are swingably supported by a common support shaft 14 in the left-right direction, and the first regulator 15 and the second regulator 18 are urged in a direction away from the product 2. The spring 21 is wound around the support shaft 14, and is mounted on the opposite side of the stocker 1 with respect to the first and second restricting bodies 15 and 18. The motor base 22 is provided with a motor 28 fixed to the motor base 22.
The drive shaft 30 driven by the motor base 22 is provided so as to project from the motor base 22 toward the stocker 1 in the front-back direction orthogonal to the support shaft 14, and between the first / second regulation bodies 15 and 18 and the motor base 22, A cam 31 that slidably slides is arranged on the motor base 22, and this cam 31 is provided on the drive shaft 30 so as to be slidable in the axial direction and integrally rotatable with the drive shaft 30. A first cam portion 33 for operating the first regulator 15 is provided on the second regulator 15, 18 side.
And a second cam portion 34 for operating the second restricting body 18.

(Operation) When the cam 31 is rotationally driven by the motor 28 via the drive shaft 30, the cam portions 33, 34 are moved by the respective cams 33, 34 as the cam 31 rotates.
Operate 18 around spindle 14. At the time of paying out, after the second regulator 18 presses and holds the product 2 on the upper side of the product 2 to be paid out, the first regulator 15 releases the lowermost product 2 by the urging of the spring 21 and lowers the product. Pay out to. After the payment, the first regulation body 15 returns, and then the second regulation body 18 returns to the product 2.
Get away from.

At this time, the reaction force acting on the cam 31 from the first / second regulation bodies 15 and 18 is received by the motor base 22.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 11.

In the figure, reference numeral 1 is a stocker, and a plurality of stockers are installed inside the vending machine in a left-right array, and stores products 2 such as cigarettes in a vertically stacked form.

The stocker 1 includes left and right side walls 3, a back wall 4 and a front wall 5. The central portion of the front wall 5 is an opening 6. The front wall 5 is not provided at the lower end portion of the stocker 1.

A mounting bracket 7 is mounted on the front surface of the lower end of the front wall 5 of the stocker 1 and has a U-shaped cross section.

Reference numeral 8 denotes a restrictor mounting plate, which is mounted on the mounting bracket 7 via the engaging piece 9 and is located below the front wall 5 of the stocker 1. The regulating body mounting plate 8 includes a standing wall 10 that closes the front surface of the stocker 1 and a bottom wall that extends forward from the lower end of the standing wall 10.
11 and the front end of the bottom wall 11 is bent into an L shape. An opening 12 is formed in the standing wall 10, and a pair of opposed shaft support pieces 13 are cut and raised forward from the opposite side edges of the opening 12.

Reference numeral 14 is a support shaft whose axial direction is the left-right lateral direction.
It is attached to both ends in a supported state.

Reference numeral 15 is a first regulating body attached to the support shaft 14, and is a mounting plate 8
A first swing plate 16 facing the opening 12 of the first swing plate 16 and a receiving plate 17 extending rearward from the lower end of the first swing plate 16. Then, the left and right upper ends of the first rocking plate 16 are projected upward, and the projecting portion is rotatably inserted into and attached to the support shaft 14, so that the first restricting body 15 is centered on the left and right horizontal axes. It is rockable. Further, by the swing, the upper surface of the receiving plate 17 can be engaged with and disengaged from the bottom surface of the lowermost product 2 in the stocker 1.

Reference numeral 18 is a second regulator attached to the support shaft 14, and is a mounting plate 8
Of the second rocking plate 19 and a pair of left and right mounting portions projecting from the lower end of the second rocking plate 19, and the mounting portions are rotatably inserted through the support shaft 14. By being attached, the second restricting body 18 can swing about the left and right horizontal axes.
Further, by the swinging, the upper end of the second swinging plate 19 can be freely engaged with and disengaged from the second lowest product 2 in the stocker 1. Further, as shown in FIG. 5, an engaging projection 20 having a chevron shape in plan view is provided on the front surface of the second swing plate 19.

Reference numeral 21 denotes a torsion coil spring, which is externally fitted to the support shaft 14, one end of which is hooked to the first restricting body 15 and the other end of which is hooked to the second restricting body 18, so that both restricting bodies 15 and 18 are connected to the product 2. It is biased to swing in the disengagement direction.

Reference numeral 22 denotes a plate-shaped motor base, the upper left and right ends of which are attached to the front surface of the attachment bracket 7. This upper end is attached with the screw 23, but the motor base of the screw 23
A tension coil spring 24 is wound between 22 and the front surface of the mounting bracket 7. Further, an engaging piece 25 is projected forward from the lower end of the motor base 22, and the engaging piece 25 is engaged with a locking hole 26 provided in the bottom wall 11 of the mounting plate 8 so that the upper end side of the motor base 22 is in the front and rear direction. It is inserted and engaged so that it can swing. As a result, when a forward force larger than the elastic force of the spring 21 acts on the motor base 22, the motor base 22 swings forward with the lower end as a fulcrum. The center of the upper end of the motor base 22 is cut and raised forward to form a limit switch mount 27.

28 is a motor, 29 is a reduction gear box which is linked to the motor 28, and the gear box 29 is attached to the motor base 22. A drive shaft 30 having an axial front-rear direction projects from the gear box 29, and the drive shaft 30 projects rearward of the motor base 22.

Reference numeral 31 is a cam, which is rotationally driven about the front-rear horizontal axis by being fitted onto the drive shaft 30 so as not to be relatively rotatable and axially movable, and its rotational direction is the direction of arrow B in FIG. It is said that. Further, 32 is a retaining ring of the cam 31 from the drive shaft 30. The cam 31 has a front shape in which one side of the substantially elliptical shape is cut out, and a first cam portion 33 and a second cam portion 34 are formed on the rear surface thereof.

The first cam portion 33 is formed so as to project rearward along a part of the peripheral edge of the cam 31, and the front end portion in the rotational direction is an inclined surface 33a.

The second cam portion 34 is formed at the central portion of the cam 31 so as to project rearward in an arc shape centered on the rotation center, and both end portions in the rotation direction are inclined surfaces 34a and 34b.

Then, by the rotational driving of the cam 31, the first cam portion 33 can be engaged with and disengaged from the first restricting body 15, and the second cam portion 34 can move into the second restricting body.
The engaging projections 20 of 18 can be engaged and disengaged. Where each cam part
When the 33, 34 and the restricting bodies 15, 18 are engaged with each other, the slopes 33a, 34a come into contact with each other, so that they are smooth.

Due to the engagement of the first cam portion 33 and the first regulating body 15, the first regulating body 15 is swung against the elastic force of the spring 21, and the upper surface of the receiving plate 17 is the lowermost product in the stocker 1. Engage the lower surface of 2,
The product is prevented from falling.

By the engagement of the second cam portion 34 and the engaging projection 20 of the second regulation body 18, the second regulation body 18 is swung against the elastic force of the spring 21,
The upper end of the second regulator 18 engages with the side surface of the second product 2 which is second from the bottom layer in the stocker 1. And the second regulation body 18
The product 2 is prevented from dropping by sandwiching the product 2 between the product and the back wall 4 of the stocker 1.

Then, the cam 31 is driven to rotate in the direction of the arrow B so that the first restricting body 15 is in the engagement position with the product 2 and the second restricting body 18 is in the disengagement position. 1 to 3
At the standby position shown in the figure, the fall preparation position shown in FIGS. 6 and 7 in which both regulation bodies 15 and 18 are in the engagement position with the product 2, and the first regulation body 15 is in the disengagement position with the product 2. The second restricting body 18 is in the engaging position, the falling position shown in FIGS. 8 and 9, and both restricting bodies.
15 and 18 are shaped as shown so that they can be sequentially positioned at the return preparation position shown in FIGS. 10 and 11 in the engagement position with the product 2. That is, the central angle θ ₁ of the first cam portion 33
The central angle θ ₂ of the second cam portion 34 is larger than that of the second cam portion 34, and the positional relationship between the two cam portions 33, 34 is swung so that the respective restricting bodies 15, 18 can be sequentially positioned at the above positions. It has become a thing.

On the front surface of the cam 31, an engaging projection 35 with the motor base 22,
It is formed at two positions concentric with the center of rotation and at the outer peripheral edge of the cam. The engagement protrusion 35 abuts the rear surface of the motor base 22, whereby the forward movement of the cam 31 axially movable in the drive shaft 30 is restricted.

Reference numeral 36 denotes a cover, the upper end of which is attached to the upper surface of the mounting bracket 7 and the lower end of which is attached to the front end of the bottom wall 11 of the mounting plate 8 so as to cover the cam 31 and the motor 28.

37 is a sold-out detection limit switch, which is attached to the outside of the side wall of the cover 36, and its switch piece 37a is the stocker 1
It is extended inside and operates when the product 2 is sold out to turn on a sold-out lamp (not shown).

38 is a standby position detection limit switch,
The switch piece 38a mounted on the mounting base 27 formed on the motor is engaged with the switch operating portion (not shown) formed on the cam 31 at the standby position, so that the motor
Stop driving 28.

Next, the payout operation will be described.

First, in the state shown in FIGS.
Is in the standby position, and the lowermost product 2 is prevented from falling due to the engagement with the first regulating body 15 and is not paid out.
Then, the motor 28 is driven by the charge input to the vending machine or the switch operation, and the cam 31 rotates in the arrow B direction.
Due to the rotation of the cam 31, the respective restricting bodies 15 and 18 go to the drop positions shown in FIGS. 8 and 9 after passing through the drop preparation positions shown in FIGS. 6 and 7. Then, the product 2 in the bottom layer is the first regulation body.
The engagement with 15 is released, and when it falls, it is paid out from the stocker 1. At this time, the second product 2 from the bottom layer is prevented from falling because the second regulator 18 is engaged at the drop preparation position, and only the bottom product 2 is dropped. Then, the cam 31 rotates further, and each regulation body
15, 18 are returned to the standby positions again after passing through the return preparation positions shown in FIGS. 10 and 11. Then, the second product, which is the second from the bottom layer, is disengaged from the second regulator 18, and all the products fall. At this time, since the first regulation body 15 is in the position of engagement with the product 2 in the return preparation position, all the products fall by one layer, and the merchandise 2 in the lowermost layer engages with the first regulation body 15 (see FIG. 1). The state returns to that shown in FIG. Here, the motor 28 is stopped by the operation of the limit switch 38.

According to the above-described embodiment, since the drive shaft 30 of the cam 31 has the lateral direction in the axial direction, it is not necessary to consider prevention of interference with the fall of the product 2 as in the conventional case, and the shaft length is Product 2
It is made as short as possible without being affected by the stacking height. As a result, the payout device is made compact.

In addition, the engagement reaction force between the cam 31 and the restricting bodies 15 and 18 acts on the drive shaft 30, but the drive shaft 30 is difficult to bend due to its short size, and smooth operation can be achieved even after long-term use. Can be maintained. Further, since the drive shaft 30 is short and difficult to bend, it is not necessary to support both ends, and unnecessary parts such as bearings do not increase.

Furthermore, the cam 31 is axially movable with respect to the drive shaft 30,
The forward movement of the cam 31 is restricted by the engagement protrusion 31 of the cam 31 contacting the motor base 22. Therefore, cam 31
The reaction force in the front-back direction between the
It is supported by 2 and does not act on the drive shaft 30, which also facilitates the operation.

Further, since the second restricting body 18 sandwiches the product 2 with the back wall 4 of the stocker 1, if the product 2 is not elastically deformed, the engagement reaction force between the second restricting body 18 and the cam 31 is considerably large. It will be big. If the engagement reaction force is too large, the frictional force may increase and the rotation of the cam 31 may be hindered. In this case, in the above embodiment, if an engaging reaction force that hinders the rotation of the cam 31 that is larger than the elastic force of the spring 24 attached to the mounting screw 23 at the upper end of the motor base 22 acts, the motor base 22
It is assumed that 22 swings forward with the lower end as a fulcrum, and the rotation of the cam 31 is not hindered. Even if the motor base 22 is not swung forward, by forming the second restricting body 18 with an elastic material, the effect of similarly preventing rotation of the cam 31 due to the engagement reaction force can be obtained. .

(Effect of the Invention) According to the present invention, the drive shaft 30 driven by the motor 28
Is a support shaft 1 in the left-right direction that pivotally supports the control bodies 15 and 18 in a swingable manner.
4 is provided in the front-rear direction orthogonal to 4, the cam 31 is provided on the drive shaft 30, and the cams 33, 34 for operating the restrictors 15, 18 are provided on the restrictor 15, 18 side of the cam 31. By rotating the cam 31 by the drive shaft 30, the respective cam portions 33, 3
Since the restriction bodies 15 and 18 are operated by 4, the length of the drive shaft 30 can be determined regardless of the height of the stocker 1. Therefore, the drive shaft 30 can be made shorter than in the conventional case, and the entire dispensing device can be made compact.

Further, the motor base 22 is provided on the side opposite to the stocker 1 with respect to each of the restriction bodies 15 and 18, and the drive shaft 30 is projected from the motor base 22 to the stocker 1 side. A cam 31 slidably contacting the motor base 22 is arranged between them, and the cam 31 is provided on the drive shaft 30 so as to be slidable in the axial direction and rotatable integrally with the drive shaft 30. The reaction force applied to the cam 31 from the bodies 15 and 18 can be received by the motor base 22. Therefore, the load applied to the drive shaft 30 can be reduced, so that even if the drive shaft 30 is cantilevered, its operation can be performed smoothly and reliably.

Further, since the first restricting body 15 and the second restricting body 18 are pivotally supported by the common supporting shaft 14, the structure can be simplified by also using the supporting shaft 14. In addition, since the common support shaft 14 pivotally supports the restricting bodies 15 and 18, and the spring 21 that biases the restricting bodies 15 and 16 in the direction away from the product 2 is wound around the support shaft 14. Spring 21
The structure for hanging is simple, and one spring 21 can be shared by two. Therefore, according to the present invention, the number of parts is small, the structure is simple, the overall size can be made compact, and the smooth operation can always be maintained.

[Brief description of drawings]

1 to 11 relate to an embodiment of the present invention. FIG. 1 is a side sectional view of a dispensing device, FIG. 2 is a sectional view of the same, FIG. 3 is a sectional view of the same, and FIG. 4 is a stocker. FIG. 5, FIG. 5 is a cross-sectional view of the second restricting body, FIG. 6 is a side sectional view of the dispensing device in the fall preparing position, and FIG. 7 is a back cross-sectional view of the same in the fall preparing position. 8 is a side sectional view at the same drop position, FIG. 9 is a back sectional view at the same drop position, FIG. 10 is a side sectional view at the same return preparation position, and FIG. 11 is a back at the same return preparation position. Sectional view, No. 12
FIG. 16 to FIG. 16 relate to a conventional example, FIG. 12 is a side view showing the schematic structure of the product dispensing device when the regulating body is in the standby position, and FIG. 13 is a plan view showing the schematic structure in the standby position. Is a side view of the schematic structure at the same drop preparation position, FIG. 15 is a side view of the schematic structure at the same drop position, and FIG. 16 is a side view of the schematic structure at the same return preparation position. 1 ... stocker, 2 ... commodity, 15 ... first regulator, 18 ... second regulator, 31 ... cam.

Claims (1)

[Scope of utility model registration request] 1. A first restricting body (15) which is detachably engageable with a lowermost product (2) among the products (2) stored in a stacker (1) in a vertically stacked form from below. , The second regulator (1) that holds the product (2) above the product (2) to be dispensed by pressing it from the side
8) and the first regulation body (15) is disengaged and the product (2)
In the product dispensing device configured to press the product (2) on the upper surface thereof by the second regulator (18) when paying out from the lower layer, the upper end of the first regulator (15) and the second regulator (18) ) And the lower end of () are swingably supported by a common support shaft (14) in the left-right direction, and the first regulating body (15) and the second regulating body (18) are separated from the product (2). Supporting spring (21) for supporting shaft (14)
A motor base (22) is provided on the side opposite to the stocker (1) with respect to the first and second regulators (15) and (18), and the motor (28) fixed to the motor base (22). Drive shaft driven by
(30) is provided so as to project from the motor base (22) toward the stocker (1) side in the front-back direction orthogonal to the support shaft (14), and the first and second restricting bodies (15) and (18) and the motor base ( 22), a cam (31) that slidably contacts the motor base (22) is arranged, and this cam (31) is slidable in the axial direction with the drive shaft (30) and (30) It is provided so that it can rotate integrally with the cam, and the first and second regulators (15) and (18) of the cam (31) have a first cam portion for operating the first regulator (15).
(33) and a second cam portion (34) for operating the second regulator (18), which is a product dispensing device characterized by the above-mentioned.