JPH044291Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field] The present invention relates to a display device, and more specifically, to a copying machine,
The present invention relates to a display device that is installed in a facsimile machine, a game machine, etc., and displays the number of operations, etc.

[Prior art]

Traditionally, digital mechanical counters have been installed as display devices in copying machines to display the number of copies, facsimiles to display the number of transmissions and receptions, and amusement machines to display the number of operations. There is.

FIG. 4 shows a conventional digital mechanical counter, which includes a plurality of rotating bodies 21 (three in the figure, but with numbers from 1 to 0 displayed on the outer circumferential surface).
(Usually 4 or more) are rotatably supported on the same shaft 22, and are positioned in the middle of the rotating body 21 with respect to the shaft 23 attached parallel to the shaft 22. A gear 24 is rotatably supported. An engaging part 21a for rotationally driving the gear 24 is formed on the side surface of the rotating body 21 of each digit on the side of the upper digit, and an engaging part 21a that engages with the gear 24 is formed on the entire range of the side surface of the lower digit. 21b. Furthermore, a small-diameter gear 21c is integrally formed on the rotary body 21 of the lowest digit in place of the engaging portion 21b, and the rotating body 21 is reciprocated by a predetermined angle by a solenoid (not shown) (in FIG. )
By engaging with the claw body 25 that is rotated, it is made to rotate 1/10 intermittently. In addition, the carry gear 24 has an engaging portion 2 on the lower digit side.
An engaging claw 24a that engages with the upper digit 1a is formed, and an engaging claw 24b that engages with the engaging portion 21b is formed on the upper digit side.

Therefore, each time the solenoid operates, the claw body 2
5 first swings in the direction of arrow A, and then swings in the direction of arrow B by a spring (not shown) that returns the drive shaft of the solenoid, causing the lowest rotor 21 to rotate by 1/10. By doing so, it is possible to increase the number visible from the display window (not shown) one by one. Then, when the display by the lowest rotating body changes from 9 to 0, the engaging portion 21a of the lowest rotating body 21 engages the engaging claw 24a of the carry gear 24.
The gear 24 is rotated by a predetermined angle, and the gear 2
By engaging the engaging claw 24b of No. 4 with the engaging portion 21b of the rotating body 21 of the upper digit and rotating it by 1/10,
Increase the display by 1.

From then on, operate in the same way and rotate the upper digits in order,
A numerical value with a number of digits determined by the number of rotating bodies 21 can be displayed.

However, in such a digital mechanical counter, the driving force transmission from the solenoid is performed purely mechanically, and as the numerical value increases, the number of rotating bodies 21 and the number of gears 24 to be rotationally driven increase. Therefore, unless the driving force from the solenoid is large, it will not be possible to display the necessary numerical values. Therefore, as the number of display digits increases, it is necessary to use a larger solenoid, which increases the overall size, complicates the structure, and increases costs.

〔the purpose〕

The present invention has been made in consideration of the above points, and it is an object of the present invention to provide a display device that has a simple configuration, can be downsized as a whole, and can achieve cost reduction.

[Structure of the idea]

In order to achieve the above object, the display device of the present invention includes a worm that rotates integrally with a driven gear that is intermittently rotationally driven by a driving force from a driving source, and a display device that is two-dimensional with respect to the axis of the worm. A first ring gear having orthogonal axes and mounted in a floating manner and a first planetary gear meshing with the ring gear are rotatably supported, and rotate concentrically with the first ring gear and meshing with the worm. a second planetary gear that is attached to the opposite side of the large-diameter gear to the first planetary gear support surface and rotates integrally with the first planetary gear; and a second planetary gear that rotates integrally with the first planetary gear; and a second ring gear that is rotatably attached concentrically to the large diameter gear and meshes with the second planetary gear.

〔Example〕

Next, one embodiment of the present invention will be explained with reference to FIGS. 1 to 3.

In the figure, 1 is a casing, with a solenoid 2 in a predetermined position, a driven gear 3 and a worm 4 that have horizontal axes and rotate integrally with each other, and a worm 4 that has a vertical axis and is fixedly mounted. 1 ring gear 5, a large diameter gear 6 that has a vertical axis and meshes with the worm 4 in two dimensions, that is, a large diameter gear 6 that has a function as a worm wheel and is combined with the worm 4, and a surface. A second ring gear 7 is attached with a different color to indicate the amount of rotation.

To explain in more detail, the solenoid 2
is an iron core 2b around which a coil 2a is wound, and a spring 2
The engagement groove is formed at one end of a pawl body 8 whose center portion is rotatably supported with respect to the casing 1. By engaging the coil 8a with the tip of the actuating plate 2d, the coil 2a swings back and forth each time the coil 2a is energized. Two forked claws 8b and 8c are formed at the other end of the claw body 8, and when one claw 8b swings in the direction of arrow C by the operation of the solenoid 2, the other claw 8c meshes with the driven gear 3, rotates the driven gear 3 by one mesh, and when the operating plate 2d of the solenoid 2, which has finished operating, is returned by the spring 2c, one claw 8b moves in the direction of arrow D. The driven gear 3 moves and meshes with the driven gear 3 again.
As a result, the driven gear 3 is rotated by two bites due to one operation of the solenoid 2. Further, the driven gear 3 and the worm 4 are fixed to the same shaft 9, and by rotatably supporting the shaft 9 with respect to the casing 1, they rotate integrally with each other. The amount of rotation of the bite is transmitted to the worm 4 by the same amount of rotation. The large-diameter gear 6 is rotatably attached to a shaft 6a attached to the center of the stationary first ring gear 5, and the amount of rotation of the worm 4 is transmitted to the large-diameter gear 6. First and second planetary gears 6 are attached to both ends of a shaft 6b that is rotatably attached to the large-diameter gear 6 through the periphery thereof.
c and 6d are fixed, the first planetary gear 6c meshes with the stationary first ring gear 5, and the second planetary gear 6d meshes with the second ring gear 7. Further, the number of teeth of the first ring gear 5 and the second ring gear 7 are made to be slightly different.

With the above configuration, each time a voltage is applied to the coil 2a, the claw body 8 swings back and forth once in the directions of arrows C and D to rotate the driven gear 3, and the worm 4 is also rotated together with the driven gear 3. Ru. And warm 4
The rotation of the large-diameter gear 6 rotates the large-diameter gear 6, and the first planetary gear 6c, which is meshed with the first ring gear 5, revolves with the rotation of the large-diameter gear 6 and rotates due to the mesh with the first ring gear 5. , the second planetary gear 6 also rotates while revolving in the same way. Therefore, the first ring gear 5 and the second ring gear 7
If the numbers of teeth in both ring gears 5 and 5 are equal, the second ring gear 7 will not rotate at all.
7 have different numbers of teeth, the second ring gear 7 rotates by an amount corresponding to the difference in the number of teeth, and different colors are applied to the second ring gear 7, for example, at predetermined positions. By looking through the window 10, it is possible to roughly know the rotation angle of the second ring gear 7, that is, the number of times the machine is used.

In addition, the number of teeth of the driven gear 3 is 10, and the number of teeth of the first ring gear is 5.
When the number of teeth of the large diameter gear 6 is 60, the number of teeth of the first and second planetary gears 6c and 6d is 15, and the number of teeth of the second ring gear 7 is 71, , by operating solenoid 2 42,600 times,
The second ring gear 7 makes one revolution in the direction of arrow E (see Figure 1), and for a normal device,
A sufficient number of operations can be displayed.

Therefore, it is sufficient to display the number of operations that require maintenance and inspection of copying machines, facsimile machines, game machines, etc.

It should be noted that the present invention is not limited to the above-mentioned embodiment, and instead of the solenoid 2, a shape memory alloy, a bimorph made of different metals bonded together, etc. are used, and the device can handle different temperatures in the energized state and in the energized state. Alternatively, instead of a solenoid, a mechanism for driving the driven gear 3 from the outside may be used.Furthermore, a pulse motor may be used to drive the driven gear 3. It may be configured to rotate directly. Furthermore, by attaching a conductive terminal to the ring gear 7 or attaching a switch operated by the ring gear 7, it is possible to drive a buzzer or the like to provide an audible display or a warning during maintenance and inspection. Further, the display on the ring gear 7 is not limited to the above-mentioned colors, but may be in any appropriate display form, such as numbers or lines with varying widths.

〔effect〕

As mentioned above, the display device of the present invention is configured with a reduction mechanism that combines a worm gear and a planetary gear, so the structure can be significantly simplified for this type of display device, and the drive source There is no load fluctuation, and a small driving force is sufficient to cover the entire display range. Therefore, by simplifying the configuration and downsizing the drive source, the display device as a whole can be made significantly smaller and thinner. This also makes it possible to reduce costs, and furthermore, the display provided on the surface of the ring gear can be enlarged to make it easier to see.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing an embodiment of the display device of the present invention, FIG. 2 is a plan view, and FIG. 3 is a longitudinal sectional view.
FIG. 4 is a diagram showing a conventional example. 3... Driven gear, 4... Worm, 5... First
Ring gear, 7... Second ring gear, 6... Large diameter gear, 6c... First planet gear, 6d... Second planet gear.

Claims (1)

[Scope of utility model registration request] A worm that rotates integrally with a driven gear that is intermittently rotationally driven by a driving force from a driving source, and a first worm that is attached in a floating manner and has an axis that is two-dimensionally orthogonal to the axis of the worm. a ring gear, a large-diameter gear rotatably supporting a first planetary gear meshing with the ring gear, and rotatably mounted concentrically with the first ring gear and meshing with the worm; A second planetary gear is attached to the opposite side of the first planetary gear support surface and rotates integrally with the first planetary gear, and a second planetary gear has an indication of rotation amount on the surface and is rotatable concentrically with the large diameter gear. A display device comprising: a second ring gear that is attached to and meshes with the second planetary gear.