JPH0110660Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to improvements in electromagnetic counters, and particularly relates to an electromagnetic counter that improves the ease of assembly between a pole and an armature that are swingably supported within a counter frame. .

[Prior art]

Conventionally, this type of electromagnetic counter uses a metal counter frame with a substantially U-shape, and between the opposing side plates there are many components, such as a number wheel and pinion, as well as an electromagnet that drives the counter frame. , armature and pole are assembled together. Therefore, the assembly work of such an electromagnetic counter is troublesome, and it is desired to have a structure that can eliminate this problem. For example, among the above-mentioned members, the pole is one of the important members that transmits the rocking motion of the armature due to the attraction of the electromagnet to the lowest digit number wheel, and it rotates close to the inner surface of one side plate. The armature that engages with this pole on one side and transmits the attracting action of the electromagnet is swingably supported on the other side and is attached to this other side plate side with a spring. However, there is a problem in that the assembly work is troublesome.

In order to simplify such assembly work, the applicant proposed a structure in which the counter frame is divided into opposing side plates, and armatures and poles are pre-assembled as a unit in accordance with Japanese Patent Application Laid-Open No. 57-93487. We have previously proposed an electromagnetic counter in which the above-mentioned ease of assembling can be improved by assembling these parts into one.

However, even with such a configuration, it cannot be said that the engagement between the pole and the armature can be achieved easily and reliably, and it is desired that some countermeasure be taken. That is, one of the above-mentioned pole and armature (generally the armature) is biased by a spring, and its tip does not match the engagement hole on the pole side, so it is necessary to align them during assembly. However, the work was troublesome. In order to solve this problem, it is necessary to assemble the spring in a later process, or to adopt a method that affects the ease of assembly as a whole, such as engaging the pole and armature first. Therefore, it is desired to eliminate the above-mentioned problems with a simpler configuration.

[Summary of the idea]

The present invention was developed in view of the above circumstances, and has a simple structure in which a guide portion having an inclined surface for guiding the tip of the armature into the engagement hole protrudes from the periphery of the engagement hole of the pole. Therefore, by simply assembling and operating the armature to the pole, the engagement state between the two can be easily and reliably obtained.
This provides an electromagnetic counter which has advantages such as extremely simple and appropriate assembly work and low cost.

〔Example〕

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

1 to 6 show an embodiment of an electromagnetic counter according to the present invention, and this embodiment shows a case where it is applied to an integrating electromagnetic counter used for displaying the number of copies in a copying machine, etc. .

In these figures, reference numeral 1 denotes a first frame that is integrally formed of synthetic resin and constitutes one side plate of the counter frame, and 2 denotes a first frame that is formed by bending a metal plate into a substantially L-shape and also serves as the other side of the counter frame. A second frame constituting a side plate and a bottom plate, these first and second frames 1,
By combining and integrating the two, a counter frame having a substantially U-shape is formed.

That is, according to this embodiment, by forming the opposing side plates constituting the counter frame as separate frames, the number wheel and the pinion meshed therewith, as well as the number wheel and the pinion meshing therewith, The structure is such that other components can be mounted easily and reliably.

To explain this simply, as is clear from FIG. Side plate part 2a
Holes 5 and 6 are bored in the shafts 3 and 4 to support the other ends of the shafts 3 and 4.

Of course, the shafts 3 and 4 may be separated and installed inside the first frame 1 made of a metal plate, for example, but as described above, the shafts 3 and 4 may be installed together with the first frame 1. If it is integrally molded from a synthetic resin material, the number of parts can be reduced, which is advantageous in terms of processability and assemblability. Even if the one side plate is formed of a synthetic resin material in this way, it does not affect the magnetic path characteristics of the electromagnet in the electromagnetic counter, and there is no problem in operation. This is the second frame 2
This is because if the side is made of magnetic material, it will function satisfactorily.

A plurality of number wheels 7 and a pinion 8 interposed between these number wheels 7 and performing a carry operation are alternately connected to the number wheel shaft 3 and pinion shaft 4 on the first frame 1 side. In particular, since the counter frame is divided into parts, these shaft mounting operations can be carried out more easily and reliably than in the past.

According to this embodiment, the pinion 8 is pivoted to the counter frames 1 and 2 which are close to the front surface of the number wheel 7 on the reading side, as is clear from FIG.
It is located in the corner of. This is because if the pinion 8 is located on the back side of the number wheel 7 as in the past, not only does the length of the counter in the depth direction become longer, but also the armature 9 and the pole 10 arranged on the back side of the counter need to be longer. This is because there is a possibility that the assemblability may be affected by the above-mentioned configuration, and it is possible to eliminate such problems.

In addition, on the inner wall of the first frame 1 located on the back side of the number wheel 7, there is a part of the second frame 2 that protrudes in the same direction as the shafts 3 and 4 across its height direction. A connecting member 11 that maintains a distance from the side surface portion 2a is integrally provided in a protruding manner. As shown in FIG. 1, this connecting member 11 includes a connecting frame 11a formed with an open center portion, and a second frame 2 from the distal end side.
A locking step portion 13 that extends toward the side and engages with the upper and lower edges of the long groove 12 bored in the second frame 2
A pair of connecting pieces 13, 13 having a, 13a,
Similarly, claw portions 15a are engaged with hook-shaped portions 14a, 14a of bent pieces 14, 14 extending from the tip of the connecting frame 11a and bent from the upper and lower edges of the second frame 2; 15a, and the side portions 2a of the first frame 1 and the second frame 2 are integrally connected to each other as shown in FIG. combined.

Furthermore, a fitting groove 17 is provided on the rear end side edge of the first frame 1, into which protrusions 16a and 16b protruding from the bottom surface 2b of the second frame 2 are fitted.
a, 17b are formed, and the bottom part 2
An elastic locking piece 18 that protrudes toward the b side and has a claw portion 18a at its tip is integrally formed. The claw portion 18a of this elastic locking piece 18 is connected to the bottom surface portion 2b.
Both frames 1 and 2 are integrated by a simple assembly operation by being engaged with the engagement groove 19 bored in the sides.

According to such a configuration, each claw portion 15
a, 15a; 18a can be separated from the second frame 2 by simply removing them using their elasticity, making maintenance and inspection work easier after assembly, and there is no risk of damage compared to the press-fitting method. There are advantages.

Now, according to the present invention, in the electromagnetic counter having the above-described configuration, the number wheel 7 is connected to the electromagnet 20.
By configuring the armature 9 and the pole 10 for stepping in the following manner, it is possible to easily and appropriately obtain the engaged state, thereby greatly improving the ease of assembly as a whole. The feature is that it can be improved.

That is, inside the first frame 1,
As shown in FIG. 2, the least significant digit wheel 7
A pole 10 has a pair of claws 10a and 10b that engage with and move a ratchet 21 integral with the pole 10.
A support shaft 22 for pivotally supporting the is integrally provided in a protruding manner. The pawl 10 is pivotally supported on the support shaft 22 with its claws 10a and 10b facing the number wheel 7 through the opening in the connecting frame 11a.

Further, an engagement hole 23 is formed at an eccentric position on the base side of the pole 10, and the armature 9 is assembled into this engagement hole 23 with its tip 9a engaged.

On the other hand, the armature 9 whose tip 9a is inserted into the engagement hole 23 of the pawl 10 is connected to a notch groove 24 formed on the upper and lower edges of the second frame 2.
The legs 25a and 25b are fitted into the legs 25a and 24b, and are assembled and supported in a swingable manner. A tension spring 26 is stretched between the armature 9 and the second frame 2. The tension spring 26 for restoring the armature 9 is stretched between the armature 9 and cut and raised pieces 27a and 27b provided on the inner surface of the second frame 2.

In such a configuration, when both frames 1 and 2 are combined, the tip 9a of the armature 9 is engaged in the engagement hole 23 of the pole 10,
Although the pawl 10 and the armature 9 are connected so as to operate in conjunction with each other, some problems arise when they are engaged as described above. That is, since the armature 9 is assembled to the second frame 2 while being pulled by the spring 26, a positional shift occurs between the tip 9a of the armature 9 and the engagement hole 23 of the pawl 10. Therefore, according to this embodiment, as shown in FIG.
A guide protrusion 28 having an inclined surface 28a that guides the armature tip 9a toward the engagement hole 23 is provided at the peripheral edge of the engagement hole 23 on the side surface of the armature 9 side. Using this guide protrusion 28, the armature 9 and the pawl 10 are brought into engagement as shown in FIG. Here, although FIG. 1 and FIG. 6 show the case where four guide projections 28 are provided, the guide projections 28 are not limited to this, and may be provided only in the required direction, or all around the circumference. Starting with the cone-shaped guide section facing the
Various modifications are possible.

Further, according to this embodiment, each member constituting the electromagnetic counter is connected to the first and second frames 1,
2 is appropriately assembled into a unit, and consideration has been given to making the entire assembly simple and reliable.

That is, the bottom plate portion 2b of the second frame 2
An electromagnet 20 is fixed together with a core 31 inside the electromagnet 20, and a front flange 32a of a synthetic resin bobbin 32 constituting the electromagnet 20 is equipped with a bobbin 32.
A pair of terminals 34a and 34b, to which both ends of a coil 33 are connected, are press-fitted and fixed. In this case, these terminals 34a and 34b have forked tips so that they will not easily come off when the peeled portion of the external connection lead wire, which will be described later, is held between them.

As is clear from FIGS. 2 and 3, on the rear end side of the outer surface of the first frame 1,
External connection lead wires 40a, 4 of the electromagnet 20
A recessed portion 41 for storing and holding the terminal 0b is provided, and through holes 42a and 42b are formed in the recessed portion 41 at positions corresponding to the terminals 34a and 34b. When the first and second frames 1 and 2 are combined, the first frame 1
The electromagnet 20 is attached to the inner surface corresponding to the concave portion 41 of the electromagnet 20.
A pair of terminals 34 are abutted against the front flange 32a side of the bobbin 32 and fixed to this portion.
a and 34b project into the recessed portion 41 through the through holes 42a and 42b.

Therefore, according to the configuration of this embodiment, the terminals 34 of the lead wires 40a, 40b
Since the connection work to a and 34b can be performed from the outside of the frame side plate as the final step after assembly, the workability is significantly improved. In particular, since this concave portion 41 is provided protruding from the electromagnet installation portion of the counter frame, which is normally a dead space,
The advantage is great, and it goes without saying that the recessed portion 41 may be formed inside the frame 1.

Further, the lead wires 40a, 40b are connected to the upper and lower edges 43a, 43b of the protrusion 43 protruding within the recessed portion 41, a pair of protrusions 44a, 44b on the outlet side thereof, and a pair of protrusions 45.
a, 45b, and a pair of protrusions 46a, 46b
The wire is meandered in a substantially S-shape through the outlet, and then passed through the upper and lower edges 47a and 47b of the protrusion 47 provided at the outlet, and is pulled out to the outside of the counter to prevent wire breakage due to external tensile force. It is constructed to prevent and securely store and hold.

By the way, the problem with the holding part for external connection lead wires having the above-described structure is that the lead wires are not compatible with the model of the main device or the request from the manufacturer.
Wires with different diameters are used depending on standards, etc., and a structure and strainer that can be firmly held regardless of these differences in wire diameter must be provided. However, for example, if two types of lead wires, large and small diameter, are configured to be drawn out through the same lead wire lead-out path,
Since the width of the outlet path is formed to match the larger diameter side, it is not possible to securely hold the small diameter side when pulling out the smaller diameter side, which may cause problems in terms of strength.

Therefore, in this embodiment, a plurality of pairs (two pairs in this embodiment) of lead wire lead-out paths are provided in the recessed portion 41 corresponding to the diameter of the lead wire used. The cutout portion is formed by a cutout portion.

That is, in this embodiment, in addition to the lead-out paths for the large-diameter lead wires 40a, 40b, detour paths 48a, 48b are provided as lead-out paths for the small-diameter lead wires, the width of which is set in accordance with the wire diameter. The protrusions 44a, 44 are provided in the middle of the large-diameter outlet path described above.
b; 46a, 46b and protrusions 45a, 45 between them
b.

Therefore, according to such a configuration, the small diameter lead wire is reliably held and drawn out while passing through the lead-out path including the detour paths 48a and 48b described above, and satisfies its strength etc. becomes possible.

Further, such a configuration has the advantage that the soldering work of the connecting portions between the lead wires and the terminals 34a, 34b can be omitted, and the installation workability can be further improved.

The part indicated by the reference numeral 50 in the figure is, for example, entirely formed of a transparent synthetic resin material, and is formed by applying an opacity treatment, etc., except for the number wheel reading window 51 on the front side. With the cover
It is placed over the counter body formed by assembling the components described above.

Further, the electromagnetic counter according to the present invention is not limited to the structure of the embodiment described above, and the shape and structure of each part can be modified and changed as appropriate. It should be clear that it is not necessary to use a division type such as .

[Effect of idea]

As explained above, according to the electromagnetic counter according to the present invention, a guide portion having an inclined surface that guides the tip of the armature into the engagement hole is provided protruding from the periphery of the engagement hole of the ball, so that it is easy to use. And despite its inexpensive configuration, it is extremely easy and appropriate to assemble the pole and armature by simply butting them together, thereby greatly improving the workability of assembly work. At the same time, it also becomes possible to achieve automatic assembly, which has great practical effects.

[Brief explanation of the drawing]

The figure shows an embodiment of the electromagnetic counter according to the present invention, and FIG. 1 is an exploded perspective view showing the overall schematic configuration.
Fig. 2 is a vertical cross-sectional view of the main part showing the assembled state, Fig. 3 is a cross-sectional view thereof, Fig. 4 is a cross-sectional view taken along the - line, Fig. 5 is a diagram for explaining the assembled state of the counter frame, FIG. 6 is an enlarged perspective view of the pole. 1... First frame made of resin, 2... Second frame made of metal, 3... Number wheel shaft, 4...
...pinion shaft, 7...number wheel, 8...pinion, 9...armature, 10...pole, 2
0... Electromagnet, 23... Engagement hole, 26... Tension spring, 28... Guide protrusion, 28a... Inclined surface.

Claims (1)

[Scope of utility model registration request] In an electromagnetic counter comprising a pole that is swingably supported on a counter frame and advances a number wheel, and an armature whose tip is engaged with the pole and which swings by being attracted by an electromagnet, An electromagnetic counter characterized in that a guide portion having an inclined surface that guides the armature tip toward the engagement hole is protruded from the circumference of the engagement hole with which the armature tip engages on the armature side surface of the pole.