JPS647400Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] The present invention relates to an electromagnetic counter, and particularly relates to an improvement in the mounting structure of a rectifying diode attached when alternating current (hereinafter referred to as AC current) is used as the supply current. .

[Prior art]

Conventionally, in this type of electromagnetic counter, when the current supplied to the electromagnet as the drive source is AC current, a rectifying diode is generally installed inside the counter for the purpose of preventing beats. In conventional electromagnetic counters, this rectifying diode is connected directly to the winding end or the winding start end of the coil that constitutes the electromagnet, and is connected to the electromagnet by wrapping the outer circumference with tape or the like. It was incorporated in an integrated state.

However, in such a conventional structure, the work of connecting the rectifier diodes must be performed simultaneously as a series of work during the coil winding work, which makes the work laborious and complicated, and is not suitable for mass production. Moreover, it has a negative effect on the ease of assembling the entire electromagnetic counter, and as a result, this type of electromagnetic counter has a drawback that is one of the causes of high costs. Particularly in recent years, there has been a great desire to automatically assemble the various components of this type of electromagnetic counter, and this also applies to the coil winding of the electromagnet mentioned above. The mounting structure of rectifying diodes has been a major obstacle in the effort to use automatic winding to reduce costs.

On the other hand, when the above-mentioned rectifier diode is incorporated into an electromagnetic counter, the installation space and the connection structure with the electromagnet become an issue, and it is necessary to incorporate the rectifier diode in an appropriate position and in an appropriate state, taking these points into consideration. Also, this type of electromagnetic counter is available in two types according to the type of supply current: the above-mentioned AC current type and DC (direct current) type.
There are two types of electromagnetic counters: one for current and one for electric current, but in order to achieve mass production and cost reduction, it is necessary to have a structure that allows the use of different parts in common between these two types of counters. Therefore, there is a demand for a simplified electromagnetic counter that can meet all of these requirements.

[Summary of the idea]

The present invention was developed in view of these circumstances, and a printed circuit board equipped with a diode that rectifies the alternating current supplied to the electromagnet that advances the number wheel is connected to a counter frame made of synthetic resin material. - The terminals are housed in a recess formed in the side surface of the electromagnet, and the ends of the pair of terminals on the electromagnet side are directly engaged with a pair of engagement holes provided in the printed circuit board, so that the rectification Due to the extremely simple configuration of electrically connecting the rectifying diode to the rectifying diode, it is possible to easily and appropriately arrange the rectifying diode in a place where there is no problem in terms of installation space, making it possible to make the counter smaller and more compact. The rectifier diode and the electromagnet can be connected extremely easily and appropriately, thereby automating the electromagnet coil winding work and greatly improving the ease of assembling the entire counter, achieving mass productivity and cost reduction. The object of the present invention is to provide an electromagnetic counter which has the advantage that the counter frame and other component parts can also be used in common with a DC counter.

〔Example〕

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

1 to 5 show an embodiment of an electromagnetic counter according to the present invention, and in this embodiment,
For example, a case where the present invention is applied to an integrating type electromagnetic counter used in a copying machine to display the number of copies is shown.

In these figures, first, the schematic structure of this type of electromagnetic counter will be briefly described. Reference numeral 1 designates a first frame constituting one side plate of a counter frame integrally formed of synthetic resin material;
Reference numeral 2 designates a second frame formed by bending a metal plate into a substantially L-shape and also constituting the other side plate and bottom plate of the counter frame.
By combining and integrating the frames 1 and 2, a counter frame having a substantially U-shape is formed. According to this embodiment, inside the first frame 1, a numerical axle 3 and a pinion shaft 4 are integrally (or may be separate bodies) erected toward the other side plate mentioned above, and these two A plurality of number wheels 5 and pinions 6 interposed between the number wheels 5 and performing a carry operation are alternately mounted on the shafts 3 and 4, respectively. In addition, with the above-mentioned two-part structure of the counter frame, the work of assembling component parts such as the number wheel 5 into the counter frame can be easily carried out, and it is also possible to achieve automation. In this case, even if one side plate is made of synthetic resin, it will not affect the magnetic path characteristics of the electromagnet that is the drive source in this type of electromagnetic counter, and there will be no problem in its operation. be. This is because if the second frame 2 side is made of magnetic material, its function can be sufficiently maintained. In addition, 7a, 7b, 7c in the figure
is an elastic locking piece that is integrally provided on the above-mentioned first frame 1 side and engages with the second frame 2 side while maintaining a predetermined interval between the opposing side plates, and of course the second frame 2 side is engaged with this. It is shaped to fit.

Reference numeral 10 denotes an electromagnet for advancing the numerical wheel, which is disposed on the bottom side of the first and second frames 1 and 2 having the above-described structure.As is well known, this electromagnet 10 is a spool made of synthetic resin. 11 (not shown) and a core 13 that is fitted and fixed within the spool 11. Furthermore, the front flange 11a of the spool 11 has a coil 12 wound thereon (not shown). A pair of terminals 14a and 14b connected at both ends are press-fitted and fixed so as to protrude laterally. In this case, the pair of terminals 14a and 14b are formed into a forked tip, but of course they may be formed into a simple terminal piece shape.

In the figure, 15 is an armature that is attracted and swings when the electromagnet 10 is excited, and 16 is an armature that engages with the armature 15 and rotates around a support shaft 17.
A pole 19 which performs an oscillating motion on the top and whose pair of claws 16a and 16b at its tip engages with a ratchet 18 integrally provided on the side surface of the lowest digit numeral wheel 5 to move it forward. In the spring 15a for restoring the armature 15 described above, one end of the spring 15a is locked at both terminals 14a and 14b on the electromagnet 10 side, and the other end is interposed between the core 13 and the armature 15 so that the spring 15a remains in the armature 15. It is a film-like registrar that eliminates the influence of magnetism and ensures smooth swinging motion of the armature 15.

The electromagnetic counter having such a configuration drives the group of number wheels 5 one step at a time in response to a supply current signal supplied from the outside to the electromagnet 10, and displays the counted value. However, the operation of each part and the configuration other than those described above are as shown in, for example, Japanese Patent Publication No. 11666/1983, which was proposed by the applicant earlier.
A detailed explanation thereof will be omitted.

Now, according to the present invention, in the electromagnetic counter configured as described above, the supply current of this counter is
A rectifying diode 20 required for AC current is mounted on a printed circuit board 21, and this printed circuit board 21 is connected to a counter frame (first frame 1) made of a synthetic resin material. ) is characterized in that it is configured to be accommodated in a recessed part 22 recessed in the side surface of the part.

Here, according to this embodiment, the above-mentioned recessed portion 2
2 is provided on the outer surface of the first frame 1 on the rear end side facing the electromagnet 10, thereby making it possible to perform molding and assembly easily and appropriately. . However, it will be obvious that the present invention is not necessarily limited to such a configuration, and may be provided on the inner side of the first frame 1. The point is that it should be formed in a part of the counter frame that is close to the electromagnet 10 and that is a dead space.

Furthermore, according to the present invention, the first
Through holes 23a and 23b are formed in the recessed part 22 provided in the frame 1 at positions corresponding to the pair of terminals 14a and 14b of the electromagnet 10, and through these through holes 23a and 23b, Another feature of the present invention is that it is constructed so that the connection between the pair of terminals 14a and 14b and the printed circuit board 21 can be easily and reliably performed.

That is, a pair of rectifying diodes 20 and a pair of electrically connected wirings 24a, 24b on the printed circuit board 21 are provided on the printed circuit board 21 at a portion facing each of the terminals 14a, 14b. Engagement holes 25a and 25b are formed, and when assembling the counter, these engagement holes 25a and 25b are formed.
By directly inserting and holding the tips of the pair of terminals 14a and 14b in a and 25b, an electrical connection can be made between the two, and the coil 12 of the electromagnet 10 and the rectifying diode 20 can be connected. has been done.

Here, according to this embodiment, the electromagnet 1 described above
Engagement hole 25 with which the 0 side terminals 14a, 14b engage
a and 25b are shown in which notches are formed in the side edges of the printed circuit board 21, but the present invention is not limited to this, and the printed circuit board 21 may be formed with a structure cut out at a desired position. It is easy to understand that it may be done. In addition, the engagement holes 25a, 25b and the pair of terminals 14a, 14b can be formed with a conductive film or the like on the end surfaces of the engagement holes, so that sufficient electricity can be generated by mere engagement. It is possible to obtain a physical connection state,
This has the advantage of improving workability during assembly. This is more effective in the case of this embodiment in which the terminals 14a, 14b have forked tips as described above, since their elasticity can be utilized. but,
It goes without saying that the shape and the like are not limited to this, and it is also clear that the joint may be soldered in some cases.

On the other hand, on this printed circuit board 21, there is a rectifying diode 2 similar to the printed wirings 24a and 24b.
Printed wiring 26a, 26 connected to the other side of 0
b, an external connection lead wire 2 of the electromagnet 10;
7a, 27b are connected, and these external connection lead wires 27a, 27b are pulled out from the bottom side of the above-mentioned recessed part 22 toward the rear of the counter frame, and are connected to a controller, etc. (not shown). . In this embodiment, these external connection lead wires 27a and 27b are connected to the upper and lower arcuate portions 28 of the protrusion 28 that protrudes within the recessed portion 22.
a, 28b and a pair of protrusions 29a, 29b forming an outlet thereof, the counter is pulled out to the outside of the counter, and is configured to be firmly held while preventing wire breakage due to external tensile force. Furthermore, in this embodiment, the pair of protrusions 29 described above
The outside of the tips of a and 29b are formed as tongues that protrude, and these tongues press each lead wire from the outside to prevent it from coming off from the recessed part 22 and to firmly hold them. It consists of

As shown in FIGS. 4 and 5, the bottom of the recessed portion 22 corresponds to the rectifying diode 20 mounted on the printed circuit board 21.
It is bored and formed as an opening 30.

According to the electromagnetic counter according to the present invention having the above-described configuration, the recessed portion 22 for accommodating and holding the printed circuit board 21 provided with the rectifying diode 20 is provided in a part of the counter frame. It is advantageous because it has a simple structure and skillfully utilizes dead space in terms of installation space, and it is practical in that it can automate the winding work of the coil 12 in the electromagnet 10 and significantly reduce its cost. Moreover, various excellent effects can be obtained. According to the above-described configuration, it is possible to make the counter smaller and more compact.

Further, according to the electromagnetic counter described above, the tips of the pair of terminals 14a, 14b on the electromagnet 10 side are directly connected to the pair of engagement holes 25a, 25b provided in the printed circuit board 21 on which the rectifying diode 20 is mounted. Since the rectifying diode 20 is configured to be electrically connected to the rectifying diode 20 by engaging the rectifying diode 20, the connection work between the rectifying diode 20 and the electromagnet 10 can be performed extremely easily and reliably. This provides advantages such as excellent counter assembly workability and operational reliability.

Further, according to the above-described configuration, the recess 22 is simply provided in a part of the counter frame, and the printed circuit board 21 having the rectifying diode 20 is fitted and held in the recess. If the terminals 14a, 14b on the electromagnet 10 side are connected to the external connection lead wires 27a, 27b in the section 22, it can be used as a DC counter as is. There is also the advantage that it is possible to share the information and achieve cost reduction.

Note that the present invention is not limited to the structure of the embodiment described above, and the shape, structure, etc. of each part may be modified and changed as appropriate.

For example, the electromagnetic counter structure to which the present invention is applied is not limited to the above-described embodiment structure, but can be applied to electromagnetic counters having various conventionally known structures to exhibit its effects. Furthermore, various modifications can be made to the wiring configuration and the lead-out structure of the external connection lead wires 27a and 27b in the recessed portion 22, which characterizes the present invention. Furthermore, various modifications can be made to the shape of the terminals 14a, 14b on the electromagnet 10 side and the state of printed wiring on the printed circuit board 21.

[Effect of idea]

As explained above, according to the electromagnetic counter of the present invention, a printed circuit board equipped with a diode that rectifies the alternating current supplied to the electromagnet that advances the number wheel is connected to the counter frame made of synthetic resin material. - The terminals are housed in a recess formed in the side surface of the electromagnet, and the ends of the pair of terminals on the electromagnet side are directly engaged with a pair of engagement holes provided in the printed circuit board, so that the rectification Since the rectifier diode is electrically connected to the rectifier diode, the rectifier diode can be easily and appropriately placed in a location where there is no problem in terms of installation space, despite the extremely simple configuration, making the counter smaller and more compact. In addition to this, the connection between the rectifier diode and the electromagnet can be made easily and appropriately.This makes it possible to automate the electromagnet coil winding work, greatly improving the ease of assembling the entire counter, and making it easier to assemble the entire counter. It has various excellent practical effects, such as mass production and cost reduction, and the ability to share components such as the counter frame for this AC counter with DC counters. be.

[Brief explanation of the drawing]

The drawings show one embodiment of the electromagnetic counter according to the present invention, in which Fig. 1 is a schematic perspective view showing the main parts thereof, Fig. 2 is a plan view of the main parts, and Fig. 3 is a side view of the main part. FIG. 4 is a side view of the main parts thereof, and FIG. 5 is an exploded perspective view showing the schematic structure of the parts that characterize the present invention. 1... (made of synthetic resin) first frame, 2...
Second frame, 5... Number wheel, 10... Electromagnet, 12... Coil, 13... Core, 14a, 1
4b...Pair of terminals, 20...Rectifier diode, 21...Printed circuit board, 22...Concave portion, 2
3a, 23b...through hole, 24a, 24b...printed wiring, 25a, 25b...engaging hole, 26
a, 26b...Printed wiring, 27a, 27b...
...Lead wire for external connection.

Claims (1)

[Scope of utility model registration request] In an electromagnetic counter, in which an electromagnet for stepping a number wheel is disposed within a counter frame and a diode for rectifying alternating current supplied to the electromagnet, the counter is made of synthetic resin material. A printed circuit board on which the rectifying diode is mounted is accommodated in a recess formed in the side surface of the frame, and a pair of engagement holes on the electromagnet side are connected to a pair of engagement holes provided in the printed circuit board. An electromagnetic counter characterized in that a tip of a terminal is directly inserted and electrically connected to the rectifying diode.