JPH01148225A - Distributing apparatus for paper towel - Google Patents

Abstract

PURPOSE: To prevent a paper towel stored in an inner frame from being taken out and an inner mechanism from being broken by constituting a lock mechanism with a thin part of a shaft being rotatably and transversely hung on a base frame side and a notched part of the middle frame side. CONSTITUTION: The plane part of the thin part 12 of a shaft 11 in a round hole 33 on the inner part side of a cutout part 32 formed on the top end part of both side plates 31 and 31 of an inner frame 2 intersects a straight line facing the round hole 33 direction from the inlet side of the notched part 32 at right angles. Therefore, the top end of the inner frame 2 is not separated from the shaft 11 and the back end part of the top end of a cover 3 and the top end parts of left and right arms 51 and 51 of the inner frame 2 are freely rotatably connected with each other and as the rotational radius of the arm 51 is different from the rotational radius of the side plate 73 rotating around both end parts of the shaft 11 as a center, the cover 3 can not be opened. Namely, both the cover 3 and the inner frame 2 are under locked condition. When the cover 3 and the inner frame 2 are required to be opened from this condition, the shaft 11 is rotated to bring the plane part of the thin part 12 and the shaft line direction of the notched part 32 in parallel.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a paper towel dispensing machine, and more particularly to a paper towel dispensing machine equipped with a mechanism for locking an inner frame containing paper towels and a cover. It is.

[Prior art] A strip of paper towel with perforations at predetermined intervals is
- A paper towel dispensing machine is known in which the paper towel is rolled up into a roll and housed in the dispensing machine main body, and the paper towel is fed out in fixed length increments.

With this type of paper towel dispensing machine, the user must pinch the end of the dispensed paper towel with his or her fingertips,
By pulling strongly, the paper towel is cut from the perforations, and paper towels cut into predetermined lengths are used.

[Problems to be Solved by the Invention] However, since this type of conventional towel dispensing machine does not have a locking mechanism, the cover is easily opened and the paper towels stored in the inner frame are taken out. There were drawbacks such as damage to the internal mechanism.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention includes: attaching the middle frame for accommodating the paper towel and the cover to the base frame so that they can be opened and closed in conjunction with each other; A thin wall portion is formed by notching the vicinity of both ends of a shaft rotatably suspended horizontally on the base frame side, and the thin wall portion is formed at the upper end of both side plates of several frames and at the side edge on the base frame side. A structure is adopted in which a notch is formed that can be rotatably fitted, and the two form a locking mechanism.

[Function] When the above-mentioned structure is adopted, by rotating the shaft on the base frame side, the state of engagement between the thin-walled part and the notch is changed, and a locked state in which the shaft cannot be pulled out from the notch, and a locked state in which the shaft cannot be pulled out from the notch. The inner frame can be changed to an unlocked state in which it can be freely pulled out from the thin-walled part, and the inner frame can be prevented from being freely opened and closed through the cover.

[Example] Hereinafter, the present invention will be described in detail based on the example shown in the drawings.

Figure 1 and the following diagrams explain one embodiment of the present invention.
The figure schematically shows the overall structure.

The paper towel dispensing machine according to the present invention (hereinafter abbreviated as the dispensing machine) has a base frame 1 fixed to a wall surface as shown in FIG.
, a middle frame 2 whose lower part is rotatably supported on the base frame 1 , and a cover 3 which is rotatably supported on the upper end of the base frame 1 while covering the front and side surfaces of the middle frame 2 . A roll-shaped paper towel 4 is housed in the middle frame 2.

Next, details of each part will be explained.

The base frame 1 is formed as a quadrilateral frame body and has a back plate 5 and left and right side plates 6.6. Three keyhole-shaped mounting holes 7 are formed in the upper end of the back plate 5 on a horizontal straight line, and corresponding to each mounting hole 7, the lower part of the back plate 5 has an axis line arranged vertically in the horizontal direction. Elongated holes 8.8 are formed respectively.

Further, the left and right side plates 6, 6 are formed narrowly and extend forward at right angles, and a long arm 9 and a short arm 10 are continuously formed at the upper and lower ends thereof.

Further, a bent portion 5a at the upper end of the back plate 5 is overlapped with the upper ends of the left and right side plates 6,6.

Both ends of a support shaft 11 are rotatably supported between the ends of the longer arm 9.9. Near both ends of the support shaft 11, cutouts are formed from both sides on the inside of the arm 9.
A thin wall portion 12 is formed. Furthermore, annular grooves 13 are formed at both ends of the support shaft 11, and grooves 14 are formed at the left and right extreme ends of the support shaft 11 to cross the shaft.

Further, a collar 15 is rotatably fitted to both ends of the support shaft 11 between the outer side of the arm 9 and the groove 13. Further, a reinforcing shaft 16 is horizontally suspended midway between the arms 9, 9 to keep the arms 9, 9 parallel.

On the other hand, between the arms 9, 9, further back than the reinforcing shaft 16, a support @17 is horizontally suspended with both ends protruding to the outside of the arms 9, 9. A bent portion of a rotary lever 18 formed in an L-shape at a symmetrical position is rotatably supported on the support shaft 17 inside the arm 9.9.

The longer arms 18a, 18a of the rotary lever 18.18 extend forward, and a shaft 19 is horizontally suspended between their tips, and a rubber roller 20 is rotatably mounted in the center of the shaft 19. The bearing is mounted on the shaft.

Also, the short arm 18b of the pivot lever 18.18.

The lower end of the bracket 18b is located on the outer side of the bracket 21 which is cut and raised inward from the back plate 5 at a right angle.
A spring 22 is stretched between the bracket 21 and the middle of the longer arm 18a, giving the rotating lever 18 the ability to rotate counterclockwise in FIG.

Further, among the left and right side plates 6, 6, the base end of a detection piece 23 made of a thin metal plate is fixed halfway outside the left side plate 6 in FIG. 1, and its tip becomes a free end, which will be described later. It faces the microswitch S1 fixed to the outer surface of the middle frame.

A printed circuit board PC equipped with a control circuit is provided on the side plate 31 near the microswitch S1.

On the other hand, above the outside of the side plates 6, 6, the upper end of a lever 24 is rotatably supported on the outer end of the support shaft 17 via an elongated hole 24a. Further, a support shaft 25 is horizontally suspended between the lower ends of each side plate 6, and the lower end of an elongated lever 26 is rotatably supported on the outer end of the support shaft 25 on the outside of the side plate 6. .

The lower end of the lever 24 and the upper end of the lever 26 are rotatably supported on both ends of a shaft 27 that is horizontally suspended below the arm 9. A rubber roller 28 is rotatably supported at the center of the shaft 27.

Further, a spring 29 is stretched between the tip of the lower arm 10 and the middle of the lever 26, and presses the lever 26 and therefore the roller 28 downward.

By the way, details of the middle frame 2 are shown in FIG. The middle frame 2 has a front plate 30 and left and right side plates 31, 31 bent at right angles from both left and right ends toward the base frame 1.

A notch 32 is formed at the upper end of the left and right side plates 31, 31 on the base frame 1 side, and a circular hole 33 is continuously formed at the inner end of this notch 32.

The width of the notch 32 is slightly larger than the thickness of the thin part 12 of the support shaft 11, and the diameter of the circular hole 33 is approximately the same as the diameter of the support shaft 11.

In addition, a bush 34 is located near the upper end of the lateral roots 31.31.
．． A pair of left and right shafts 35 and 36 are rotatably supported in parallel via 34. A rubber roller 37.38 is fixed to the central part of the shaft 35.36.

In the example shown, the diameters of the rubber rollers 37, 38 are equal.

One roller 37 is called a feed roller and the other roller 38 is called a drawer feed roller.

On the other hand, in FIG. 2, an inverted-shaped bracket 39 is fixed to the outer surface of the right side plate 31, and a motor 40 is fixed to the horizontal portion of this bracket 39 in a vertical state. The output shaft 40a of the motor 40 extends vertically upward, and the upper and lower horizontal portions 41a, 41 of the mouth-shaped support frame 41 are also fixed perpendicularly to the outer surface of the side plate 31.
It is rotatably supported on a. And the horizontal part 41a
, 41a, the output shaft 40a has a worm gear 4.
2 is fixed.

A worm wheel 43 is fixed to the end of one shaft 35 on the motor 40 side outside the side plate 31, and this worm wheel 43 meshes with the worm gear 42. Furthermore, although a gear 44 is fixed to the motor-side end of the shaft 36 on the far side, this gear 44 does not mesh with the worm gear 42 . A small diameter pulley P1 and a large diameter pulley P2 are fixed to the other end sides of the shafts 35 and 36, respectively, and a belt B is stretched between them.

Further, a bifurcated frame 45 is provided below the gear 44 and is fixed to the side plate 31 with the gear 44 sandwiched therebetween in the thickness direction. The element and the light-receiving element are housed, and constitute a tooth number sensor.

Further, below the shaft 35.36, the left and right side plates 3
A shaft 47 is horizontally suspended between 1 and 31 by fixing both ends with screws 46 from the outside of the side plate 31.
Further, between the side plates 31, 31, @48 is horizontally suspended at a position closer to the base frame 1 near the lower end. A semicircular support frame 49, 49 is fixed to both ends between these upper and lower shafts 47, 48 in a downwardly curved state on the near side. These support frames 49.49
As shown in FIGS. 5 and 6, the vapor towel 4 wound into a roll is supported using the support.

By the way, the lower end of an arm 51 is rotatably supported via a shaft 50 on the outer surfaces of the left and right side plates 31, 31 and in the lower part near the front side.The other end of this arm 51 will be described later. It is rotatably supported on the cover 3 side.

On the other hand, a quadrilateral notch 5 is provided at the lower end of the central portion of the front plate 30.
2 is formed, and a hollow triangular rotating frame (pendulum) 53, which is a contact type detection means, faces inside this notch 52. That is, inside the front plate 30, there are left and right side plates 31.
, 31, a thin shaft 54 is horizontally suspended between them. The center portion of this shaft 54 rotatably passes through a bent portion 52a that is bent at right angles inward from the left and right side edges of the notch portion 52, and between the left and right bent portions 52a, the shaft A collar 55 is rotatably fitted into the collar 54 .

The collar 55 is fixed inside the corner of the upper end of the triangular rotating frame 53.

Therefore, the rotating frame 53 is rotatably supported on the shaft 54 via the collar 55. Below this shaft 54, another thin shaft 56 is horizontally suspended in parallel between the side plates 31 and 31, and a collar 57 is fitted in the center of the shaft. It is inserted into a hollow rotating frame 53.

Further, a magnet 58 is fixed to a corner of the lower end of the rotation frame 53. Below this rotating frame 53, a shaft 60 having a projecting piece 59 at a position that does not interfere with the lower end of the rotating frame 53 is horizontally suspended between the lower ends of the side plates 31, 31 on the near side. There is. When the magnet 58 approaches within a predetermined distance inside the upper end of the protruding piece 59, it turns on.
A reed switch 59a is fixed.

Cutouts 60a are formed on the lower side of both ends of the shaft 60, and projecting pieces 62 and 62 extending forward from the lower side of the left and right ends of the support frame 61 are fitted into these cutouts 60a, respectively. are fitted and screwed together.

The support frame 61 is formed as a rectangular hollow frame body, and protrusions 63° 63 extending from the left and right upper surfaces of the rear end are attached to both ends of the shaft 25 that is horizontally suspended between the lower ends of the left and right side plates of the base frame 1. Fixed.

Further, the lower end of the rear end side of the left and right side plates 31, 31 of the middle frame 2 is connected to the shaft 2 inside the left and right side plates 6, 6 of the base frame 1.
It is rotatably supported on both ends of 5.

Inside the support frame 61 is a battery box 65 containing a battery 64.
are removably fitted.

On the other hand, a switch plate 66 is attached to the lower end of the front side of the middle frame 2 using the space below the front plate 30. The switch plate 66 is formed as a flat rectangular frame by press-molding a metal plate, and has a quadrilateral notch above the center portion from which the outward corner of the rotating frame 53 faces. 66a
is formed. A peripheral wall 66b is formed on the entire periphery of the switch plate 66, including the periphery of the notch 66a, and is bent rearward at right angles.

A peripheral wall 66b is provided at the upper end of the switch plate 66 in the horizontal direction.
The shaft 56 is rotatably fitted therethrough, and the collar 57 is fitted into the notch 66a.

A shaft 61 is provided horizontally at the lower end of this switch plate 66, passing through the peripheral wall 66b, and both ends of this shaft 67 are horizontal at the lower ends on the front side of the side plates 31, 31 and above the shaft 60. It is slidably fitted into the elongated hole 68 formed in the arrangement.

Further, a bent piece 69 extending toward the front side is fixed on the inner surface of the side plate 31 and near the elongated hole 68, and a spring 70 is attached with its base end wound around this bent piece 69.
is provided, and the tip of the spring 70 hits the inner surface of the switch plate 6G and presses the lower end side of the switch plate 66 forward.

On the other hand, a microswitch S2 is provided on the outer surface of the side plate 31 and in the vicinity of the elongated hole 68, and the tip of its actuator 71 faces a position where it can come into contact with the shaft 67.

By the way, the cover 3 has a cross section having a front plate 12 and side plates 73 and 73 extending from both left and right ends in the direction of the base frame 1. A backing plate 74 is fixed to the inner surface of the front plate 72. Bent parts 75 and 78 are provided at both upper left and right ends of the backing plate 74 and at both left and right ends of the lower part, and are fixed to the back surface of the side plate 73 via these bent parts 75 and 76.

A U-shaped curved portion 77 is formed at the lower end of the backing plate 74 from the front upward.
The tip of the front plate 12 is in contact with the back surface of the front plate 12. Therefore, the lower half of the backing plate 74 is separated from the front plate 72.

Further, the upper end portion of the side plate 73 closer to the front side is connected to the shaft 1.
1, and a C ring 78 is fitted into the annular groove 13 of the shaft 11 on the outside of the side plate 13,
This prevents it from falling off.

On the other hand, the rear end portions of the upper ends of the left and right side plates 73 are rotatably supported on the upper end portions of the left and right 1ljiij 51.51 of the middle frame 2 via screws 79.

Next, the method of use and operation of the paper towel dispensing machine constructed as described above will be explained with reference to the flowcharts shown in FIG. 9 and subsequent figures.

FIGS. 9 and 10 are flowcharts for explaining the operation. FIG. 9 shows the overall flow of the operation, and FIG. 10 shows the detailed operation of the main parts.

First, I will explain the overall flow.

In step S1 shown in FIG. 9, paper towels are set. At this time, the cover 3 must be opened and the middle frame 2 must be tilted toward the front. However, in the initial state, the shaft 1 is located in the circular hole 33 on the back side of the notch 32 formed at the upper end of the side plates 31 and 31 of the middle frame 2.
The flat portion of the thin wall portion 12 of No. 1 is perpendicular to the straight line extending from the entrance side of the cutout portion 32 toward the circular hole 33 (
(See Figures 11 and 12). Therefore, the upper end of the middle frame 2 does not come off the shaft 11, and even if you try to open the cover 3 by pinching the lower end of the cover 3, the rear end of the upper end of the cover 3 and the upper ends of the left and right arms 51, 51 of the middle frame 2 Since the radius of rotation of the arm 51 is different from the radius of rotation of the side plate 73 centered on both ends of the shaft 11,
I can't open it either. That is, both the cover 3 and the middle frame 2 are in a locked state.

If you want to open cover 3 and middle frame 2 from this state, use shaft 1.
1 so that the plane portion of the thin portion 12 becomes parallel to the axial direction of the notch 32 (see FIGS. 13 and 14). The shaft 11 may be rotated by fingers or by fitting a screwdriver or other jig into grooves 14 formed at both ends of the shaft 11.

By making the flat surface of the thin portion 12 parallel to the axial direction of the notch 32, the shaft 11 can be easily pulled out from the notch 32. In this state, the battery 64 and the like are housed on the side of the middle frame 2, and the middle frame 2 is heavy and the rear end of the lower part of the left and right side plates 31, 31 is the axis of the lower end of the base frame 1. Since it is rotatably supported on the shaft 25, the entire middle frame 2 has a rotational moment that rotates toward the front about the shaft 25. Therefore, if you pinch the lower end of the cover 3 and push the cover 3 upward, , the cover 3 opens around the axis 11. Then, the middle frame 2 is rotated toward you by its own weight, and the left and right arms 51.51
Since the upper rear ends of the side plates 73, 73 of the cover 3 are pulled downward through the opening mechanism, the opening movement of the cover 3 is further accelerated, and the cover 3 opens almost automatically. This state is shown in FIG. 8, and at this time the arc-shaped support frames 49, 49 are in an upwardly open state.

In this state, the cover 3 and the middle frame 2 maintain a balance,
Both remain open. Like this, cover 3 and middle frame 2
Place the rolled paper towel 4 on the left and right support frames 49.49 with the paper towels open, pull out the tip, and pass it over the top of the rubber rollers 37.38 to the front side of the front plate 30. Place it in the desired position and use a paper towel 4
Set. This is the stage of step S1 shown in FIG.

After setting the paper towel 4 in this way, the cover (front lid) 3 is closed in step S2. When the cover 3 is closed, the cover 3 is rotated counterclockwise about the shaft 11 in FIG.
5 in the clockwise direction in FIG.

When the middle frame 2 is rotated in the clockwise direction in FIG. Ru. In this state, cover 3
, the middle frame 2 is now completely closed, but is not yet locked.

Therefore, when the shaft 11 is rotated 90 degrees clockwise or counterclockwise in FIG. 3 is also locked.

By the way, when the cover 3 is closed, the tip of the detection piece 23 provided on the base frame 1 side touches the micro switch S on the inner frame 2 side.
1 and turns it ON (step S3). When the microswitch S1 is turned on, the power is turned on in step S4, and subsequently, in step S5, the control circuit configured on the printed circuit board PC is reset.

On the other hand, when the cover 3 and the middle frame 2 are closed, the roller 2
0 is pressed onto the feed roller 37 and the roller 28 is pressed onto the pull-out feed roller 38 via the drawn out paper towel. The pressing force is provided by springs 22 and 29.

The operation immediately after the circuit is reset, that is, the first operation after the paper towel is set, starts with the control in step S7 shown in FIG. 10, and step 824 is completed to complete the towel setting. If so, the control in step S6 is repeated. Details of the control content in step S6 will be explained with reference to FIG. 10.

Also, the operation after setting the towel will be explained.

Normally, the tip of the set paper towel is placed between the feed roller 31 and the rotating frame 53, and
It is located outside of 0.

The rotating frame 53 is rotating clockwise in FIG. 1 due to its own weight, and since the magnet 58 is close to the reed switch 59a, the reed switch 59a is turned on.

In other words, there is no paper towel on the rotating frame 53 (SW2).

After the circuit is reset in step S5, it is detected in step S7 that there is no paper towel on the rotation frame 53 (SW2), and after waiting (pause) for a certain period of time in step 818, the motor 40 is activated in step 319. It starts rotating and at the same time the preset ■ mode is set.

The rotation of the motor 40 is transmitted to the shaft 35 via a worm gear 42 and a worm wheel 43, and the shaft 36 is rotated via a small diameter pulley P1 fixed to the other end of the shaft 35 and a large diameter pulley P2 of the belt 81. Ru.

As a result, the feed roller 37 is rotated at high speed and the drawer feed roller 38 is rotated at low speed, and the leading end of the paper towel is fed out.

On the other hand, in the preset mode (2), the amount of paper feed after the reed switch 59a is turned on is set. This paper feed amount is set in advance, and the set amount is determined by the gear 44.
It is detected by counting the number of teeth by a sensor inside the frame body 45. At this time, the paper feed is carried out at maximum, and approximately one sheet of paper towel is fed.

Eventually, the tip of the paper towel will move to the rotating frame 53 (SW2).
When the magnet 58 reaches this point, it is rotated counterclockwise in FIG. 2, and the magnet 58 is separated from the reed switch 59a, so that the reed switch 59a is turned off. This is step 8
It is 20.

When the reed switch 59a is turned off, this means that the tip of the paper towel has been detected, and preset (2) is reset in step 821, and preset (2) is newly set in step S22. In this mode, the amount of paper feed after the reed switch 59a is turned off is set, and the detection of this paper feed ω is the same as the method of counting the number of teeth of the gear 44 described above.

Then, in step 323, when the preset paper feed maximum (preset ■) is counted up, the motor 40 stops, and the tip of the paper towel 4 is placed in the rotating frame 5.
At a predetermined time from 3, for example, the paper towel comes out beyond J2 and downward from the front surface of the switch plate 66, and the setting of the paper towel is completed. This is step 324, which is a standby state in step S8 for using the towel. The state at this time is shown in FIG.

At this time, the next perforation has already been moved to the feed roller 3.
1 and the drawer feed roller 38,
Due to the difference in rotational speed of both rollers, the longitudinal center portion of the perforation is torn over a predetermined length, leaving it open. This opening is designated by 4a.

Further, if the tip of the set paper towel 4 is set beyond the rotation frame 53 instead of between the feed roller 37 and the rotation frame 53, the towel is placed on the rotation frame 53 in step S7. In this case, the system enters a standby state in step S8.

Next, normal use after completing the towel set will be explained.

There are two ways to use it. First, in one method, when the switch plate 66 is pressed in the above-described standby state step S8 to step S9, the microswitch S2 is turned on via the shaft 67. In step 810, the rotating frame 5
3 has detected the presence of a paper towel, the motor 40 starts rotating in step 811. The connected feed roller 37 and drawer feed roller 38 rotate to feed the paper towel.

At the same time, preset ■ is set. In this mode, the amount of paper feed after the switch plate 66 is pressed is set.

Detection of the paper feeding interval is a method of detecting the number of teeth of the gear 44, similar to the above-mentioned preset (2) and preset (2). While the number of teeth is being counted, the presence of the paper towel is being detected by the rotating frame 53 (step 51).
2).

Then, in step S13, when the preset paper feed amount is counted up, the motor 40 is stopped and the tip of the paper towel is set at a length Jl that is easy to tear off.
is added and hangs down (step 514).

In this state, even if the switch plate 66 is pressed again through a paper towel, the motor 40 will not operate (step $15).
Continuous use is prevented.

Subsequently, in step 816, when the lower end of the paper towel 4 is pulled by hand, the force is concentrated on the opening 4a of the paper towel 4, so that the paper towel 4 is reliably cut along the perforations and with a small force. .

When the paper towel is cut, the rotating frame 53 no longer contacts the paper towel 4 in step S17.
It returns to its original state due to its own weight, and after waiting for a certain period of time in step 318 to detect that the paper towel is gone, the motor 40 rotates in step 819.
Set the preset ■ mode at the same time as sending out the next paper towel. Thereafter, as described above, step S24
The process goes to step S8, which is in a standby state for the next use.

Another method of use is to pull and cut the lower end of the paper towel 4 hanging down from step S8 in the standby state to step 316. Even in this case, the paper towel 4 is cut reliably along the perforations, and step S1
7 to step S24, and enters a standby state for next use, step S8. In normal use, this step S6 is repeated.

Paper towels are used in this way, but if the leading edge of the paper does not appear forever and the tooth count value becomes equal to the preset value set in step S20, it is detected that there is no paper towel, and in step S25, preset The value of is counted up, the motor 40 is stopped, and the process moves to step 326 in FIG.

The paper feed amount by preset (2) is larger than the paper feed amount by preset (2), and the paper feed amount by preset (2) is larger than the value of preset (2).

In step 326, the motor 4o is not driven even if the switch plate 66 is pressed, and paper feeding is not performed.

Note that during the above-mentioned operation, for some reason, the cover 3
When the microswitch S1 is opened, the microswitch S1 is turned off in steps 328 and 329, so the power is cut off and paper feeding is not performed. If the cover 3 is closed again, the process moves to step S2, and the process is as described above.

If there is no paper towel left in step 326, the cover 3 is opened in step S27, the microswitch S1 is turned off in step 828, and the power is turned off in step S29. In this state, replace the paper towel as described above in step 5.
30), return to step S1 and repeat the above-described operation.

[Effect] As is clear from the above description, according to the present invention, the lock m+R is constituted by the thin part of the shaft rotatably suspended on the base frame side and the notch part on the middle frame side. Because of this structure, the inner frame and the cover linked to it can be locked and unlocked simply by rotating the shaft, making it impossible to open the cover and damage the internal mechanism. No inconvenience will occur.

[Brief explanation of the drawing]

The figures are for explaining one embodiment of the present invention, in which Fig. 1 is an exploded perspective view of the whole, Fig. 2 is an exploded perspective view of the middle frame, Fig. 3 is a partially cutaway perspective view, and Fig. 4 is an overall A perspective view, Fig. 5 is a sectional view taken along the line A-A in Fig. 3, Fig. 6 is a sectional view taken along the line B-B in Fig. 4, Fig. 7 is a perspective view of the main parts, and Fig. 8 is a sectional view taken with the cover open. 9 and 10 are flowcharts for explaining the operation. FIGS. 11 and 12 are perspective views and longitudinal side views of the locking mechanism in the locked state, and FIGS. 13 and 14. FIG. 2 is a perspective view and a vertical side view of the locking mechanism in the unlocked state. 1... Base frame, 2... Middle frame, 3... Cover, 4...
・Paper towel, 6,31. γ3...Side plate, 9.1
0... Arm, 11° 17.19, 25, 27, 35.3
6... Shaft, 12... Thin wall portion, 20.28... Roller, 32... Notch, 33... Circular hole, 31...
Feed roller, 38...Drawer feed roller, 40.
... Motor, 42 ... Worm gear, 43 ... Worm wheel, 44 ... Gear, 45 ... Frame, 51
...Arm, 53...Rotating frame, 58...Magnet,
59a... Reed switch, 66... Switch board,
p1. p 2...Pulley, 81.82...Micro switch.

Claims (1)

[Claims] A shaft rotatably suspended horizontally on the base frame, comprising a base frame that is fixedly arranged, and a middle frame and a cover that are rotatably supported on the base frame and opened and closed in conjunction with each other. A thin wall portion is formed in the vicinity of both ends of the inner frame, and a cutout portion into which the thin wall portion can be rotatably fitted is provided at the upper end of the left and right side plates of the middle frame and at the side edge on the base frame side. Due to the thin wall part and notch part,
A paper towel dispensing machine characterized by comprising a locking mechanism.