JPH0517724Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a roller counting device, and more specifically, the present invention relates to a roller counting device, and more specifically, a number roller provided on an axis and a control roller attached to an axis parallel to the axis. The control roller is configured such that each rotation of the lower number roller, the interlocking means provided on this number roller rotates the teeth of the control roller that are meshed with the interlocking means at that time corresponding to the position of the number. by an angle, and this advancement is transmitted to the next digit roller through the teeth of the control roller, which is always in mesh with the ring gear of the next digit roller.
The number roller carries up, the teeth of the control roller are formed in different shapes, and the number roller and control roller are disengaged and reengaged in order to form any number combination using the number roller. The present invention relates to a roller counting device that can perform the following functions.

[Prior art] Roller counting devices include, for example, ammeters, water meters,
It is used in devices that count quantities such as heat counters, and is also used in distance meters and the like.

This type of roller counting device is installed on the shaft and
It consists of a number roller with numbers .about.9, and a control roller, which is provided on an axis often parallel to the number roller axis and performs carrying together with the number roller. The result of the count is displayed by combining one digit on each number roller, this display appearing on a reading line on the number roller, usually with a window above it. The roller counter is provided with reset means for disengaging the number roller from the control roller, by means of which the roller counter is always reset to zero, for example by means of a heart-shaped cam; can be manually set to any number of combinations, including all zeros, using In the energy (power) counter,
Counters are mainly used in which combinations of numbers can be manually set.

In order to perform a carry, the interlocking means provided on the lower number roller interlocks the teeth of the associated control roller with each rotation, and the movement of this control roller causes a ring gear which is constantly in mesh with the control roller to move. It is transmitted to the upper number roller with. At this time, the upper number roller rotates exactly by one number. To perform this action, the control roller must have at least two teeth, and accordingly the ring gear of the higher number roller must also have two teeth.

The roller counting devices known to date have two drawbacks, which require the use of sophisticated technical measures in order to eliminate them.

a When resetting or setting to a new combination of numbers, the numbers may be set in a position halfway through the progress of the number interval, so be sure to fully determine the position of the numbers relative to the reading line when reading. Can not.

b When carrying is performed at multiple positions, the play in the gears may cause the combination of numbers to become irregular in a step-like manner, making it difficult to read.

[Problems that the invention seeks to solve] A series of solutions are known that attempt to eliminate these drawbacks. In the roller counting device described in Swiss Patent Publication No. 585,936, an eight-toothed control roller is provided with two square projections, which are oriented in both directions of the axis. A leaf spring is provided on this square projection for fixing the control roller in one of four positions.
As a result, play during carrying is reduced and the formation of staircases in the digit string is reduced. Furthermore, this device is suitable for preventing digits from being set in the middle of a numeric interval increment when resetting or setting to a new digit combination. However, this device requires a higher torque than previous roller counting devices, has an increased number of components, and has the drawbacks of a larger assembly width.

On the other hand, in the case of another roller counting device disclosed in German Patent Publication no. The distance can be expanded. Each control roller is provided with four short teeth and four long teeth.

In operation, the teeth of the control roller are kept in mesh with the ring gear of the number roller by the slider. In the case of a reset or when setting a new numerical combination, the above-mentioned engagement is disengaged, and the control roller then abuts against a stopper which has an opening accommodating the engaged long teeth and the opposing long teeth. come into contact with The control roller is thus kept in its angular position. When a new number combination on the number roller is selected, the long teeth move to fit between the appropriate teeth on the number roller. This device cannot prevent the formation of a staircase condition during multi-stage carry. This device has significantly more components and is more complex than previous roller counting devices.

Therefore, the purpose of the present invention is to provide a method for resetting or setting new numbers.
This prevents numbers from being set in the middle of incrementing the number interval, and prevents numbers from arranging in a step-like manner when multiple carries are performed in one direction. The object of the present invention is to provide a roller counting device of the type mentioned at the outset, which does not require extra components.

[Means for Solving the Problems] In order to achieve the above object, according to the present invention, (a) the number roller 3 and the control roller 5 are involute gears, and (b) the ring gear of the number roller 3 is 8 and control roller 5
(c) Depending on the difference in pitch and the shape of the teeth, the number roller 3 can be adjusted to the number interval provided on the same number roller. (d) each carry is started earlier by the average play and the shape of the teeth allows for multiple carries in one direction; A structure is adopted that reduces the possibility that the numbers on the reading line become stair-stepped in some cases.

[Function] With the above-described configuration, the roller counting device of the present invention sets the numbers in the middle of incrementing the number interval when resetting or setting to a new combination of numbers. It is possible to prevent numbers from arranging in a step-like manner when multi-stage carry is performed in one direction, and furthermore, it does not require extra structural members compared to conventional roller counting devices.

[Example] Next, an example of the present invention will be described in detail using the drawings.

What is shown in FIG. 1 is a roller counting device. This roller counting device is formed of a case 1, in which a number roller shaft 2 is fixed at two points, and a rotatable number roller 3 is mounted on the number roller shaft. A control roller shaft 4 is similarly fixed to the case 1 at two points parallel to the number roller shaft, and a control roller 5 for carrying up is rotatably provided on this control roller shaft. The control roller 5 is provided with teeth, and the teeth have two types of shapes, which are equally spaced so as to alternate. code 3'
The lowest numbered roller indicated by is driven by a step control device (not shown) via a ring gear having a fine pitch 6. The interlocking means 7 of the lower number roller 3 rotates once, the control roller 5 interlocks the angle corresponding to the step of the number, and then the control roller itself moves the number roller 3 of the higher order by the amount of the step of the number. When sent, a carry is performed. For this purpose, all higher number rollers 3 are provided with a ring gear 8 which continuously engages the corresponding control roller 5. The number roller 3 is optionally provided with a rotating belt which accommodates interlocking means 7 and which protects the numbers provided on the number roller 3 from being worn out and damaged by the control roller 5. This rotating belt can also be omitted, in which case,
If the numbers are the same, the assembly width of the roller counting device is reduced. In order to be able to reset the numbers on the roller counter or set them to a new combination, the teeth of the control roller 5 and the number roller 3 must be disengaged, which means, for example, that the numbers roller This can be done by moving the shaft 2 or the control roller shaft 4 in parallel, or also by other means.

What is shown in FIG. 2 is the number roller 3, and FIG. 2a is a view from the second lowest number roller 3, and FIG. 2B is a view from the second highest number roller 3. It is. FIG. 2a shows the ring gear 8 that performs the carry. ring gear 8
are provided with numerical roller teeth 10 of equal tooth width, and these teeth 10 are arranged so as to have large pitches 11 and small pitches 12 alternately. In the case of a large pitch 11, a deep root 13 is formed, and in the case of a small pitch 12, a flat root 14, that is, shallower than the deep root 13, is formed. These teeth are designed as involute gears. When the number roller 3 has 10 numbers, the number of teeth of the ring gear 8 of this number roller 3 is 20.
It is individual. The side view of the number roller 3 on which the carry takes place is shown in FIG. 2b. The number rollers are provided with interlocking means 7 for carrying up, and this interlocking means 7 consists of two pins that protrude beyond the edge of the adjacent number rollers 3 toward the higher order number rollers. 15, 15'. The edge 17 of the number roller is cut out in the radial direction between the two pins 15, 15' to form a notch 16. Since the interlocking means 7 displaces earlier with respect to the number on the number roller 3, the carry starts somewhat earlier.

The control roller 5 is shown in FIG.
Figure a is a top view from the side of the lower number roller 3, and Figure 3b is a top view of the end face. The control roller 5 has eight teeth, and wide teeth 18 and narrow teeth 19 are arranged alternately. wide teeth 18
In order from the upper number roller side, there are two numbers connected by a wide meshing tooth 20 that can fit into the deep root 13 of the ring gear 8 of this number roller 3 and a control roller 5. A low-profile, flat-topped protrusion 21 is provided which rotates in the gap between the rollers 3 and engages with the pin 15 of the interlocking means 7 only during carry-up. Similarly, for the narrow tooth 19, starting from the upper number roller side, first, the tooth height is slightly lower than the tooth height of the wide meshing tooth 20, and the ring gear 8 of the higher number number roller 3 is shallower. A meshing tooth 22 is provided which fits into the root 14. Then, over the remaining width of the control roller 5, a slightly lower toothed portion 23 is provided, which toothed portion 23 is a half-moon-shaped notch formed in the interlocking means of the lower numerical roller 3. Part 16
It can also be inserted into. The width of the pair of narrow teeth 19 and wide teeth 18 of the control roller corresponds to the spacing of the numbers on the number roller 3. The meshing teeth 20 and 22 are designed as involute gears.

How the carry is performed will be explained using FIG. 4. The figure shows the transmission from the lower number roller 3 to the control roller 5. In FIG. 4a, as soon as the number roller 3 has completed one revolution, the first pin 15 of the interlocking means 7 of the number roller
comes into contact with the protrusion 21 of the control roller 5, causing the control roller 5 to rotate together. Further rotation continues, as shown in FIG.
5' and into the semicircular cutout 16 of the interlocking means. The position in which the tooth portion 23 of the narrow tooth 19 is captured and interlocked by the second pin 15' is shown in FIG. 4c. The tooth section 2 of the narrow tooth 19 of the control roller is driven by the projection 21
3, the load is smoothly switched to the drive. This is because the projection 21 is no longer driven by the pin 15 at the moment the tooth section 23 of the narrow tooth 19 of the control roller enters the drive area of the pin 15'. As a result, load switching takes place smoothly. The situation just before the last stage of the movement of the control roller 5 is shown in FIG. 4d.
Immediately thereafter, in this position, the second pin 15'
passes under the tooth section 23 of the narrow tooth 19 of the control roller, and the next projection 21' of the control roller 5 remains in a position where it can be activated anew after the next revolution of the number roller. . This whole movement is
This is done over an angle of rotation corresponding to the distribution of the numbers on the number roller. It is not possible to interchange the functions of the narrow teeth 19 and the projections 21 of the control roller. This is because only the narrow teeth 19 of the control roller can fit into the number roller 3 at the location where the semicircular cutout 16 is provided.

FIG. 5 shows how the control roller 5 and the ring gear 8 of the higher number rollers interact. As shown in FIG. 5a, in each case only the wide tooth 18 of the control roller fits into the deep root 13 or the narrow tooth 19 of the control roller.
Only the tooth part 14 fits into the shallow tooth root 14. As is clear from FIG. 5b, other states are not possible. This is because, if the narrow teeth 19 of the control roller fit into the deep roots, the teeth of the ring gear 8 and the teeth of the control roller would overlap, as shown by hatching 24 in FIG. 5b. .

The wide teeth 18 of the control roller are connected to the numerical roller shaft 2.
It is easy to understand that it is impossible to introduce the tooth root 14 into a shallow depth corresponding to the fixed distance between the control roller shaft 4 and the control roller shaft 4. Therefore, when the number roller 3 is removed from the control roller 5 and recombined with the control roller after changing the combination of numbers, the number roller 3 is placed in a state where the number row on the number roller 3 is not fully advanced. cannot be adjusted. Therefore, according to the present invention, it is reliably prevented that the number roller is adjusted in a state where the step of the number string is incomplete.

The step-like carry is caused by the play between the teeth of the number roller 3 and the control roller 5 and the pins. As already mentioned, the interlocking means 7 is displaced forward with respect to the numbers mounted on the number roller 3 by an average amount of play during carrying. The carry is thereby started early and the formation of staircases is therefore reduced. The interlocking teeth of the number roller 3 and the control roller 5 are involute teeth, which improves the rotational characteristics, and when the errors are the same, the rotating number roller 3 and the control roller 5
The play between is reduced. Accordingly, also
The formation of stair conditions during carries is reduced. The necks of all teeth are formed in such a way that the point of contact with other parts of the roller counter during rotation extends radially with respect to the corresponding roller, so that radial forces are transmitted upon contact. There isn't. Thereby, during carry-up, the drive of the control roller projection 21 is smoothly transferred to the tooth section of the narrow tooth 19 by the interlocking means 7, which also reduces the formation of steps. However, all this does not apply if the direction of rotation of the roller counting device is reversed. In the multi-stage carry roller counting device as described above, a staircase state is formed by reversing the direction of rotation. However, this is often not a problem for power counters. This is because the direction of rotation is always kept constant in the power counter. However, the formation of this step condition due to the reversal of the direction of rotation is no greater than in roller counting devices according to the prior art.

[Effects of the Invention] In the roll counting device of the present invention, when resetting or changing the combination of numbers, the step of the interval between the numbers is not adjusted half-heartedly. In the case of multi-stage carry, a staircase state of the number string does not occur in the normal rotation direction, but when the rotation direction of the roller counting device is reversed, the formation of a step state of the number string becomes larger than that of known counting devices. Never.
No extra parts are required, just a change in the number of parts. Therefore, the roller counting device of the present invention is formed only of the case 1, the number roller 3, the control roller 5, the shafts of the two rollers, and a device for disengaging the control roller 5 from the number roller 3.
Since the device is simple to assemble and the individual parts can be easily formed with relatively large tolerances, it costs less to manufacture than known roller counting devices.

[Brief explanation of the drawing]

Fig. 1 is a front view of the roller counting device, Figs. 2a and 2b are side views of the number roller, Fig. 3a is a side view of the control roller, Fig. 3b is a top view of the control roller, and Figs. 4d is a side view showing the engagement between the lower number roller and the control roller, and FIGS. 5a and 5b are side views illustrating the carry between the control roller and the higher number roller. 3... Number roller, 5... Control roller, 7...
Interlocking means, 8... Ring gear, 11, 12... Pitch, 13, 14... Teeth base, 15, 15'... Pin, 16... Notch, 18... Wide tooth, 19...
...Narrow teeth, 20...Wide interlocking teeth, 21...
...Protrusion, 22... Narrow meshing tooth, 23...
Teeth part, 24... overlap.

Claims (1)

[Claims for Utility Model Registration] 1. Comprising a number roller installed on an axis and a control roller installed on an axis parallel to the axis,
The control roller has a lower number roller of 1.
With each rotation, the interlocking means provided on this number roller advances the teeth of the control roller, which are meshed with the interlocking means at that time, by a rotational angle corresponding to the location of the number, and this advancement advances the number of the next digit. The number roller is carried up by being transmitted to the next digit roller through the teeth of the same control roller, which are always engaged with the ring gear of the roller, and the teeth of the control roller are formed into different shapes. In a roller counting device in which the number roller and the control roller can be disengaged and re-engaged in order to form an arbitrary number combination using the number roller, the number roller 3 and the control roller 5 are involute. The ring gear 8 of the number roller 3 and the control roller 5 are gears.
Each of the number rollers is provided with consecutive teeth having two types of pitches, and depending on the difference in pitch and the shape of the teeth, the number roller 3 is set in the middle of the number interval step provided on the same number roller. Because each carry is started early by the average play, and because of the shape of the teeth, the number on the read line is A roller counting device characterized in that a step condition is reduced. 2. A utility model registration request characterized in that a deep tooth root 13 is formed at the large pitch 11 of the ring gear 8 of the upper number roller 3, and a shallow tooth root 14 is formed at the small pitch 12. The roller counting device according to scope 1. 3 Alternately on the side of the higher numbered rollers 3 of the control rollers 5 in each case wide teeth 1 with wide interlocking teeth 20 that can fit only into the deep roots 13;
8, and narrow teeth 19 having narrow interlocking teeth 22 that can fit only into the shallow root 14. The roller counting device according to claim 2, which is a registered utility model. 4. A protrusion 21 is formed in each extension of the wide tooth 18 of the control roller 5, which protrusion is lower than the wide tooth 18 and is flat above;
The roller according to any one of claims 1 to 3, which is further characterized in that it can enter the gap between two numbered rollers 3 connected by a control roller 5. Counting device. 5 Projection 21 and teeth 1 provided on control roller 5
The roller counting device according to any one of claims 1 to 4, wherein the necks 8 and 19 extend in the radial direction. 6 When the lower number roller 3 rotates once, the protrusion 21 of the control roller 5 and the tooth portion 23 of the narrow tooth 19
is interlocked by the pins 15, 15' of the interlocking means 7 provided on the number roller 3 within a rotation angle range corresponding to the number distribution of the number roller 3, so that the next protrusion 21 is moved to a predetermined position. The roller counting device according to any one of claims 1 to 5, characterized in that the roller counting device comes to a standby position. 7. In the case of a carry, the tooth section 23 of each narrow tooth 19 of the control roller
The roller counting device according to any one of claims 1 to 6 of the claims 1 to 6, characterized in that the roller counting device is fitted into and interlocked with the notch 16 of the movement means 7 formed on the edge of the roller counting device. . 8. Utility model registration according to any one of claims 1 to 7, characterized in that the transition from the interlocking of the protrusion 21 to the interlocking of the toothed portion 23 by the interlocking means 7 is performed smoothly. roller counting device. 9 The distance between the number roller shaft 2 and the control roller shaft 4 is determined, and the engagement between the narrow meshing teeth 22 and the deep tooth base 13 of the number roller 3 is, in this position, the meshing with the adjacent wide meshing teeth 20. This is prevented by forming an overlap 24 between the tooth end of the ring gear 8 of the number roller 3 and the tooth end of the adjacent tooth of the ring gear 8 of the number roller 3. roller counting device. 10. The roller counting device according to claim 1, wherein the rotating belt is removed from the number roller 3.