JPS639009Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a preset counter, and more specifically, it has a plurality of number wheels, and a contact mechanism is attached to the highest digit number wheel and any number wheel after the next digit, The present invention also relates to a preset counter configured to send out a signal when these number wheels reach a predetermined set value.

For example, in the case of a copying machine, the number of copies is managed, and when the number of copies reaches a predetermined number, a signal is sent to a control device attached to the main body of the copying machine, and the notification function of this control device controls the copying machine. To notify maintenance service personnel when it is time to replace toner, etc.
A simple preset counter is included.
And in this kind of preset counter,
In recent years, a contact mechanism for sending signals has been attached to the highest digit number wheel, and a contact mechanism has also been attached to any number wheel after the next digit, and by combining these, it is possible to more appropriately send out a signal. A structure that allows settings is known.

By the way, with this kind of preset counter,
Generally, the set value is determined in advance by a contact mechanism consisting of a slider on the number wheel side and a fixed contact circuit on the circuit board side, and this set value is used repeatedly. could not be changed after assembly. And, on the other hand,
The setting value for this type of preset counter is
Desired setting values vary depending on the model of the copying machine or the user's requests, and this creates a contradiction in that models with different setting values must be prepared to accommodate these different setting values. Ta. In particular, the set values based on the above-mentioned requirements often differ only in the set numerical values of the number wheels after the next digit, and it is desired to make this variable variable with a simple configuration.

The present invention was developed in view of the above circumstances, and its purpose is to make it possible to vary the set value of the contact mechanism attached to any number wheel after the next digit using a simple adjustment means. It is an object of the present invention to provide an inexpensive preset counter that has excellent compatibility and versatility, and can easily perform inventory management by unifying models.

Hereinafter, the present invention will be explained in detail using embodiments shown in the drawings.

1 and 2 are a front view and a perspective view of essential parts of an embodiment of a preset counter according to the present invention, and as shown in FIG. It is fixed by screws 2 to the mounting board 1 of the main device, such as the main device, and displays the count value accompanying the operation of the main device.

That is, this preset counter consists of four number wheels 6 to 9 and a stepped gear 10 rotatably mounted on a number axle 5 supported between a pair of opposing side plates 3 and 4, and a stepped gear 10 on the number axle. A zero return bracket member 11 is rotatably supported on a zero return support shaft (not shown) parallel to 5, and a pinion shaft is supported through a pair of opposing arms of this zero return bracket member 11. Shift pinions 13 to 16 rotatably supported on 12 and interposed between the numbered wheels 6 to 9 and stepped gear 10 to perform a shifting action.
and a pawl 17 having double claws that mesh with the small-diameter gear 10a (star-shaped gear) of the stepped gear 10, and which is oscillated by an armature or the like (not shown) to intermittently rotate the stepped gear 10. It is equipped with a known electromagnetic counter component. In addition, 1 in the figure
8 is a zero return push button which rotates the zero return bracket member 11 so as to separate the pinions 13 to 16 from the number wheels 6 to 9, and returns each number wheel 6 to 9 to zero all at once; Heart cams 6a to 9a that engage with heart cam pushers (not shown) of the zero return bracket member 11 and transmission gears 6b to 9 that mesh with the pinions 13 to 16 are provided on the side surfaces.
b is integrally provided.

A pair of number wheel sliding pieces 20 are provided on the side surface of the highest digit number wheel 6 of the number wheel group on the side plate 3 side.
A, 20b are fixedly installed, and on the other hand, a circuit board 22 is attached to the inner wall of the side plate 3. The circuit board 22 has a number wheel fixed contact circuit 21 on which the number wheel sliding pieces 20a, 20b mentioned above come into sliding contact.

Further, a setting axle 23 is supported between the opposing side plates 3 and 4 in parallel with the number axle 5, and on this setting axle 23 is interlocked with any number wheel 7 to 9 of the next digit onwards in the group of number wheels. A setting wheel 24 to be operated is rotatably supported. That is, this setting car 24
constitutes a contact mechanism that detects whether or not the arbitrary number wheels 7 to 9 after the next digit have reached the set value, and one end thereof has a transmission gear 7b of the arbitrary number wheels 7 to 9. 9b, and a pair of setting wheel sliding pieces 25a, 25b are fixedly provided at the other end extending toward the circuit board 22 side. These setting wheel sliding pieces 25a, 2
A setting wheel fixed contact circuit 26 connected in series with the number wheel fixed contact circuit 21 is formed on the circuit board 22 opposite to the number wheel 5b. 9 reaches the set value, a signal is sent out from a pair of terminal portions 27a and 27b provided on the circuit board 22.

According to this embodiment, the setting wheel 24 is configured to operate in conjunction with the third digit number wheel 7, and the length in the axial direction is set accordingly. Further, the same number of numbers as the number wheel 7 are written on the outer periphery of the setting wheel 24, so that the set numerical value can be confirmed.

The setting wheel 2 is mounted on the setting axle 23.
A sleeve 30 that presses the circuit board 4 toward the circuit board 22 and restricts its axial movement is attached.
In other words, the setting wheel 24 rotates with the rotation of the number wheel 7 with which it engages, so that the setting sliding piece 2
5a and 25b must be in sliding contact with the setting wheel fixed contact portion 26 on the circuit board 22, and the sleeve 30 is used to maintain this state.

Now, according to the present invention, as described above, the sleeve 30 that restricts the axial movement of the setting wheel 24 is
As is clear from FIGS. 2 and 3, the sleeve 30 is made of an elastic member such as a synthetic resin material, and is provided with a slotted groove 30a along the axial direction. 23
The setting wheel 24 is configured to be detachable from the vertical direction, thereby making the initial rotational position of the setting wheel 24 variable. That is, since the setting axle 23 is supported between the opposing side plates 3 and 4 during assembly, if a simple cylindrical sleeve is used, numerical values for the setting wheel 24 must be set at the same time during assembly, which is a cumbersome task. It cannot be removed from the setting axle 23 after assembly. In contrast, according to the present invention, after assembling the counter, the sleeve 30 is removed from the setting axle 23, the setting wheel 24 is shifted in the axial direction, the gear 24a is disengaged from the transmission gear 7b of the number wheel 7, and the setting is performed. car 24
can be freely circulated.

Therefore, with this configuration, the initial rotational position of the setting wheel 24, that is, the setting value, can be freely selected by the simple operation of removing the sleeve 30 from the setting axle 23, and this allows the user to freely select the initial rotational position of the setting wheel 24, that is, the setting value. Adjustments can be made to select the optimal setting values according to the requirements, and changes in setting values due to differences in equipment can be accommodated, making it possible to standardize models. In addition, the above-described configuration has the advantage that it is not necessary to set numerical values on the setting wheel 24 during assembly, which improves work efficiency.

Then, with the setting wheel 24 set to the desired value, move it to the circuit board 22 side and set the gear 24 to the desired value.
a is meshed with the transmission gear 7b of the number wheel 7, and then the sleeve 30 is attached to the setting axle 23.

Note that the slot groove 30a of this sleeve 30 is
As is clear from FIG. 3, it is preferable that the width dimension is slightly smaller than that of the shaft hole 30b.
The attachment and detachment is performed by utilizing the elasticity of the sleeve 30 itself. Furthermore, 30c in the figure is a flange used for attaching and detaching the sleeve 30.

Further, the number wheel fixed contact circuit 21, the setting wheel fixed contact circuit 26, and the pair of terminal portions 27a and 27b formed on the circuit board 22 are as shown in FIG.
The wiring state is as shown in FIG. 5B and FIGS. 5A and 5B. In this case, FIG. 4 shows the respective sliding pieces 20a, 20b; 25 when the setting value is "2500".
A is a diagram showing the contact position of a and 25b.
Figure 5 shows the case when the count value is "0000", Figure B shows the case when the set value is "2300", and Figure A shows the case when the count value is "0000". ”,
B in the figure shows the case of "2300".

To explain this simply, 31 and 32 in the figure are shaft holes bored on the circuit board 22 so that the number axle 5 and the setting axle 23 pass through, and around these shaft holes 31 and 32 there are A number wheel fixed contact circuit 21 and a setting wheel fixed contact circuit 26 are formed respectively, and a pair of terminal portions 27a and 27b are formed in parallel on the upper and lower sides at the end on the setting wheel 24 side.

The number wheel fixed contact circuit 21 is connected to the shaft hole 31.
It consists of two types of patterns: inner and outer, which form concentric circles around the . The inner pattern is an annular common contact part 33, which is connected to one terminal part 27a via a lead contact part 35 together with an arcuate contact part 34 formed in a part of the outer pattern. An island-shaped segment contact portion 36 is formed at the end of the arcuate contact portion 34 in the direction of rotation of the number wheel (direction of arrow a in the figure) through an insulating portion, and the other portions are in sliding contact with the number wheel. Vehicle sliding piece 2
An arcuate conductor portion 37 is formed to prevent wear of Oa.

Here, among the pair of sliding pieces provided on the highest digit number wheel 6, one sliding piece 20a has an arcuate contact portion 34, a segment contact portion 36, and an arcuate conductor portion 37 forming an outer pattern. Slide the top and
The other sliding piece 20b slides on the common contact portion 33 forming the inner pattern. The arcuate contact portion 34 has an angular area of two numbers, that is, approximately 72 degrees, in the circumferential direction, and the segment contact portion 36 has an angular area of approximately 36 degrees. Of course, these angles are actually somewhat small due to the provision of the insulating portion.

On the other hand, the setting wheel fixed contact circuit 26 is similarly composed of two types of patterns, inner and outer, which form concentric circles around the shaft hole 32. The inner pattern is a circular common contact part 38,
It is connected to the segment contact section 36 of the number wheel fixed contact circuit 21 via a lead contact section 40 together with an arcuate contact section 39 formed in a semicircular arc shape on the outside. Further, a segment contact portion 41 formed on the remaining outer half circumference is connected to the other terminal portion 27b, and this segment contact portion 41 is connected to the arcuate conductor portion 37 via a lead connection portion 42.

Of the pair of sliding pieces provided on the setting wheel 24, one sliding piece 25a slides on the outer arcuate contact portion 39 and the segment contact portion 41, and the other sliding piece 25b slides on the inner arcuate contact portion 39 and the segment contact portion 41. Sliding contact is made on the common contact portion 38. Note that the arrow b in the figure indicates the rotation direction of the setting wheel 24.

Next, the operation of the preset counter having the circuit configuration described above will be explained.

That is, when the highest digit number wheel 6 displays the number "2", the common contact section 33 and the segment contact section 36 are short-circuited by the sliding pieces 20a and 20b, while the third digit number When the car 7 displays the number wheel "5", the sliding pieces 25a, 25
b, the common contact part 38 and the segment contact part 4
The initial rotational position of the setting wheel 24 is set so that 1 is short-circuited. A state in which the counter count value at this time is "0000" is shown in FIG. 4A, and at this time, there is no conduction between the terminal portions 27a and 27b.

From this state, the pole 17 swings in response to input from the main device, and each of the number wheels 6 to 9 sequentially performs a counting operation. When the highest digit number wheel 6 changes from "1" to "2", the sliding piece 20
a, 20b moves from the arcuate contact portion 34 onto the segment contact portion 36, whereby both contact portions 3
3 and 36 are short-circuited. Further, when an input is given to the preset counter and the number on the third digit number wheel 7 changes from "4" to "5", the sliding piece 25a that was in sliding contact with the arcuate contact portion 39 moves into the segment. moves onto the contact portion 41, thereby causing the contact portion 38,
41 is short-circuited. As a result, terminal section 2
Between 7a and 27b are sliding pieces 20a and 20, respectively.
b; A short circuit is created by a series circuit via 25a and 25b, and a signal is sent out. The state at this time is shown in FIG. 4B, and the count value is "2500".

Furthermore, after completing the prescribed operations and work, each number wheel 6 to 9 can be set by pressing the push button 18.
All you have to do is return them to zero all at once. At this time, setting car 2
It is clear that 4 also rotates and resets integrally with the associated number wheel.

In addition, when changing the set value from "2500" to "2300", remove the sleeve 30 from the setting axle 23 as described above, and then remove the setting wheel 24 from the transmission gear 7b of the number wheel 7 to adjust the rotation. do it. At this time, the sliding pieces 20a, 20b; 25a,
The state of 25b is shown in FIGS. 5A and 5B, and when the count value is "0000", one sliding piece 25a of the setting wheel 24 moves 3 times in the direction opposite to the rotating direction of the segment contact part 41. It is located on the arcuate contact portion 39 with an angular area of about 108 degrees. Then, when the count value reaches "2300", as is clear from FIG. 5B, the terminal portions 27a and 27b are short-circuited and a signal is sent out, as in the case described above.

Note that the circuit board 22 described in the above embodiment
In the setting vehicle fixed contact circuit 26 above, the arc-shaped contact portion 39 that conducts to the common connection portion 38 and the corresponding segment contact portion 41 are each shaped like a semicircular arc, and each has an angular area of approximately 180 degrees. The range of adjustment by the wheel 24 is from numbers "1" to "5", but if the angular areas of both contact portions 39 and 41 are changed and formed as appropriate, adjustment from "0" to "9" can be made at the maximum. It is easy to understand that this is possible.

As explained above, according to the preset counter of the present invention, the axial movement of the setting wheel that meshes with the transmission gear of any number wheel after the next digit and constitutes its contact mechanism is restricted. By forming a slotted groove along the axial direction in a sleeve made of an elastic material, and configuring this sleeve to be detachably attached to the rotating shaft of the setting wheel, the setting can be adjusted by disengaging it from the number wheel. This makes it possible to make adjustments to select optimal setting values according to the attached main devices, and to manage these main devices in an optimal state. In addition, since the setting values can be adjusted, it is possible to respond to changes in setting values due to differences in equipment, and it is also possible to standardize models.
Excellent versatility.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of a preset counter according to the present invention, FIG. 2 is a perspective view of the main parts thereof,
Figure 3 is a side sectional view of the sleeve that characterizes the present invention, Figures 4A and B are side views of the circuit board to explain the signal sending operation when the setting value is "2500", and Figure 5A , B are side views of the circuit board similarly showing the case where the setting value is "2300". 3, 4...Opposite side plate, 5...Number axle, 6-9
...Number wheel, 6b to 9b...Transmission gear, 12...
Pinion shaft, 13-16...Pinion, 20a,
20b... Number wheel sliding piece, 21... Number wheel fixed contact circuit, 22... Circuit board, 23... Setting axle,
24... Setting wheel, 25a, 25b... Setting wheel sliding piece, 26... Setting wheel fixed contact circuit, 27a, 27
b...Terminal part, 30...Sleeve, 30a...Slot groove.

Claims (1)

[Scope of utility model registration request] A plurality of number wheels having transmission gears, a plurality of shift pinions interposed between these number wheels to carry out a shift action, and a number wheel fixed to the side surface of the highest digit number wheel of the number wheels group. A sliding piece, a setting wheel that meshes with a transmission gear of any number wheel after the next digit of the number wheel group and operates in conjunction with the number wheel, and a setting wheel fixed to the side of the setting wheel. a moving piece, and a circuit board on which a number wheel fixed contact circuit and a setting wheel fixed contact circuit are formed, with which the number wheel sliding piece and the setting wheel sliding piece respectively slide, and the setting wheel has the number wheel group. It is supported on a setting axle supported parallel to the number axle to be mounted on the shaft, and movement in the axial direction is regulated by a sleeve attached to the setting axle, and this sleeve is formed of an elastic member. and has a slot groove along the axial direction,
A preset counter characterized in that the initial rotational position of the setting wheel is selected by removing the sleeve from the setting axle using the slotted groove and disengaging the arbitrary number wheel from the setting wheel.