JPS6349781Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in electromagnetic counters, and particularly to a guiding structure for external connection lead wires of electromagnets disposed within a counter frame.

Conventionally, in this type of electromagnetic counter, a metal counter frame having a substantially U-shape is used, and an electromagnet for driving a number wheel in steps is fixedly installed inside the bottom plate of the counter frame. Therefore, in such an electromagnetic counter, not only is it troublesome to solder the terminal on the electromagnet side and its lead wire for external connection, but also there is a risk of the lead wire coming off after connection. Strength against tensile force cannot be guaranteed.

In other words, in order to prevent disconnection from occurring at the connection between the terminal on the electromagnet side and the lead wire, it is sufficient to adopt a structure in which the lead wire is held directly on the counter frame or a cover placed on the outside of the counter frame. This is difficult due to space issues within the counter, so conventional methods either rely on soldering to connect the lead wires to the terminals, or
Alternatively, a structure is used in which the lead wire is pulled out from the counter frame through a bushing or the like that prevents the lead wire from coming off.

However, in such a method, the former has poor strength and reliability, and the latter is unfavorable in terms of workability when assembling the counter. It is desired to have a structure that can easily perform the connection work between the two and more reliably prevent disconnection of the connection.

The present invention was developed in view of these circumstances, and consists of providing a recess on the outer surface of one side plate of the counter frame to accommodate and hold the lead wire for external connection of the electromagnet, and a through hole is drilled in a part of the recess. With a simple structure, a pair of protrusions are protruded to communicate with the inside of the counter frame and allow the lead wire to meander, and one of the protrusions is formed with a tongue piece for holding the lead wire. Not only does it make it easy to connect the terminal on the electromagnet side to the lead wire for external connection, but it is also inexpensive because it securely stores and holds the lead wire within the recess, increasing the strength and reliability of the connection. This provides an electromagnetic counter.

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

1 to 4 A and B show an embodiment of an electromagnetic counter according to the present invention. In this embodiment, a case where the electromagnetic counter is applied to an integrating electromagnetic counter used for displaying the number of copies in a copying machine, etc. is shown. It shows.

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 is also 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 can be easily and easily connected to the shaft that is horizontally suspended between these side plates. It is configured to ensure reliable shaft mounting.

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, respectively.

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 first frame 1 is provided with a first
As shown in FIG. 1 and FIG. 4A, through holes 9 and 10 for inserting positioning pins which engage with the number wheel 7 and the pinion 8 to position them in the rotation direction are provided.
By using positioning pins inserted into these through holes 9, 10, the work of mounting the number wheel 7 and the pinion 8 can be performed easily and reliably. This is to ensure that the number wheel 7 and the pinion 8 mesh correctly.

On the other hand, on the side of each number wheel 7, as is clear from FIGS. 1 and 4B,
An engagement hole 11 for positioning is bored, and the number wheel 7 has a positioning pin 1 extending from the through hole 9 parallel to the number wheel shaft 3 into the engagement hole 11.
2 is engaged with the shaft 3. At this time, the formation position of the engagement hole 11 is set so that the number "9" displayed on its outer periphery corresponds to a reading window to be described later.

Further, the pinion 8 is positioned using the square boss 8a so that the long teeth 8b and the short teeth 8c are properly engaged with the carry segment 7a and the transmission segment 7b of the numeral wheel 7. The long tooth 8b and the short tooth 8 are attached to the positioning pin 13 which extends parallel to the pinion shaft 4 from the through hole 10 during the shaft mounting.
The gaps between the two are engaged, and positioning in the rotational direction is performed.

Therefore, according to such a configuration, the number wheel 7 and the pinion 8 can be inserted alternately while being slightly aligned with the respective shafts 3 and 4 and the respective positioning pins 12 and 13. This means that the shafts can be properly engaged and mounted, making this work much easier and more reliable than in the past.

In addition, as shown in FIG. 1, the upper and lower edges of the first frame 1 have grooves that protrude in the same direction as the shafts 3 and 4 and are connected to the side surface 2a of the second frame 2. connection piece 20 for maintaining the spacing;
Elastic locking pieces 22 and 23 are integrally provided with a protrusion 21 and have claw portions 22a and 23a on a portion of the distal end thereof.
is formed. Corresponding to these elastic locking pieces 22 and 23, bent pieces 24 have hook-shaped parts 24a and 25a on the upper and lower edges of the second frame 2, with which claw parts 22a and 23a engage. , 25 are formed, whereby the side portions 2a of the first frame 1 and the second frame 2 are integrally combined.

Furthermore, a fitting groove 27 is provided on the rear end side edge of the first frame 1, into which protrusions 26a and 26b protruding from the bottom surface portion 2b of the second frame 2 are fitted.
a, 27b are formed, and the bottom part 2
An elastic locking piece 28 that protrudes toward the b side and has a claw portion 28a at its tip is integrally formed. The claw portion 28a of this elastic locking piece 28 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 29 bored in the sides.

According to such a configuration, each claw portion 22
a, 23a; 28a 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.

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, inside the first frame 1,
As shown in FIG. 4B, the least significant digit number wheel 7
A pole 31 has a pair of claws 31a and 31b that engage with and move the ratchet 30 integral with the pole 31.
A support shaft 32 for pivotally supporting the is integrally provided in a protruding manner. A through hole 33 for inserting a positioning pin is provided in the first frame 1 so as to be close to the support shaft 32.
A positioning pin 34 inserted into the through hole 33 is fitted into a fitting hole 35 provided in the pole 31, so that the pole 31 can be fixed during assembly.
The claws 31a, 31b are configured to properly engage the ratchet 30.

Further, an engagement groove 31 is provided on the base side of the pole 31.
c is formed, and the armature 36 is assembled with its tip 36a engaged in this engagement groove 31c. At this time, a temporary fixing groove 37 is formed inside the first frame 1 into which the tip 36a of the armature 36 is previously inserted, and the armature 36 is erected on the first frame 1 using this. Then, by combining the second frame 2 with this first frame 1 and further extending the tension spring 38 between the armature 36 and the second frame 2, the upper and lower parts of the second frame 2 are arranged. The legs 36 are inserted into the notch grooves 39a and 39b formed on the side edges.
b, 36c are fitted and supported in a freely swingable manner. This is because when the armature 36 is assembled to the second frame 2 side, it is troublesome to align the tip 36a of the armature 36 with the engagement groove 31c of the pawl 31. In addition, the tension spring 38 for restoring the armature 36 mentioned above
is stretched between the armature 36 and cut and raised pieces 38a and 38b provided on the inner surface of the second frame 2.

On the other hand, an electromagnet 40 and a core 41 are fixed inside the bottom plate part 2b of the second frame 2,
Further, a pair of terminals 44a and 44b, to which both ends of a coil 43 wound around the bobbin 42 are connected, are press-fitted into a front flange 42a of a synthetic resin bobbin 42 constituting the electromagnet 40. In this case, these terminals 44a and 44b have forked tips so that they do not easily come off when a peeled portion of an external connection lead wire, which will be described later, is held between them.

Note that the front flange portion 42a of the bobbin 42
As is clear from FIG. 3 and FIG.
When combined, the support shaft 3 on the first frame 1 side
The boss portion 31d of the pole 31, which is pivotally supported by the pole 2, comes into contact with one side of the boss portion 31d, and is configured to prevent the boss portion 31d from coming off.

Further, between the armature 36 and the core 41, there is a film-like residial 4 made of, for example, a polyester sheet or a Teflon sheet.
5 is interposed in order to eliminate the influence of residual magnetism on the armature 36 and obtain smooth rocking motion thereof. In this case, according to this embodiment, the above-mentioned residial 45 has the terminal 44a on one end thereof, as shown in FIGS. 1 and 3.
44b is fitted into the slits 45a and 45b, and the front flange portion 42a of the bobbin 42 is covered from the terminal-side side edge to the front surface of the core 41, and the above-mentioned terminal-side side edge portion is connected to the first and second frames. When 1 and 2 are combined, the first frame 1
It is incorporated and prevented from coming off by coming into contact with the inner surface of the

Now, according to the present invention, the lead wires 50a and 50b for external connection of the electromagnet 40 are stored and held on the rear end side of the outer surface of the first frame 1, as is clear from FIGS. 2 and 3. A recessed portion 51 is provided, and the terminal 44 within this recessed portion 51
Through holes 52a and 52 are provided at positions corresponding to a and 44b.
b is drilled. Then, when the first and second frames 1 and 2 are combined, the first
The front flange 42a side of the bobbin 42 of the electromagnet 40 is brought into contact with the inner surface corresponding to the concave portion 51 of the frame 1, and a pair of terminals 44a, 44b fixed to this portion are connected to the through holes 52a, 5.
It protrudes into the recessed part 51 via 2b.

Therefore, according to such a configuration, the work of connecting the lead wires 50a, 50b to the terminals 44a, 44b can be performed from the outside of the frame side plate as the final step after assembly, so that the workability is significantly improved. . In particular, this concave portion 51 is provided in a protruding manner in a portion of the counter frame where the electromagnet is disposed, which is normally a dead space, and therefore its advantage is great.

Further, the lead wires 50a, 50b are connected to the upper and lower arcuate portions 53a, 53b of the protrusion 53 provided in the recessed portion 51, and a pair of protrusions 54a, 54b forming the exit portions thereof. It is meandered in a roughly S-shape and pulled out to the outside of the counter.
It is constructed to prevent wire breakage due to external tensile forces and to be able to be stored and held securely.

In particular, in this embodiment, as shown in FIGS. 2 and 4A, the protrusion 54 forming the outlet portion
The outside of the tips of the leads 50a and 54b are formed by protruding as tongues 55a and 55b, and the respective lead wires 50a and 50b are pressed from the outside by the tongues 55a and 55b to form the recessed portions of the lead wires 50a and 50b. Since the lead wires 50a and 50b are prevented from coming off from the lead wires 51, it is possible to hold the lead wires 50a and 50b more firmly.

Therefore, in such a configuration, the lead wire 5
It is possible to omit the soldering work of the connection parts between 0a, 50b and the terminals 44a, 44b, and to further improve the workability of the installation work.

Furthermore, in this embodiment, the above-mentioned lead wire 50
a, 50b are guided along the inside of the bottom plate portion 2b of the second frame 2 via U-shaped notches 56a, 56b provided on the rear end side of the first frame 1, and Notch 57 provided in the bent part of No. 2
a, 57b, and is configured to be able to be pulled out directly behind the counter via arcuate stepped portions 58a, 58b formed at the rear end of the first frame 1. There is.

By configuring the counter frame so that the lead wires can be pulled out from both sides, unnecessary routing of the lead wires can be prevented, and the direction in which the lead wires are pulled out can be selected depending on the state of use of the counter, making it highly versatile. It is excellent in terms of Moreover, according to such a configuration, the lead wires 50a,
There is no problem that the cover 50b gets in the way of a housing-like cover 60 having a counter display window 60a which is placed on the outside of the counter frame after assembly, and it is possible to obtain an electromagnetic counter with good appearance.

In this embodiment, hook-shaped edges 61a, 61 are formed on a part of the rear flange 42c of the bobbin 42 corresponding to the notches 57a, 57b on the second frame 2 side.
b is formed in a protruding manner to protect the lead wires 50a and 50b drawn out to the rear of the counter.

As explained above, according to the electromagnetic counter according to the present invention, a recessed part for storing the external connection lead wire of the electromagnet is provided on the outer surface of one side plate constituting the counter frame, and a part of the recessed part has a through hole. A hole is drilled through the hole to communicate with the inside of the counter frame, and a lead wire is connected to the terminal of the electromagnet through the through hole.
A pair of protrusions are provided within this concave portion, and the protrusion on the exit side is provided with a tongue piece for holding the lead wire, so that the lead wire is meandered and pulled out to the outside of the counter frame. The simple structure not only makes it extremely easy to connect the lead wire to the terminal of the electromagnet, but also allows the lead wire to be securely stored and held within the recess and to be firmly assembled. It has various excellent effects such as eliminating the problem of breakage due to disconnection from the electromagnet side and improving reliability in terms of strength.

[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 perspective view of essential parts showing an assembled state, FIG. 3 is a plan view of only the counter frame in section, and FIGS. 4A and 4B are a side view and a sectional side view. 1...First frame, 2...Second frame, 3...Number wheel shaft, 4...Pinion shaft, 7...Number wheel, 8...Pinion, 40...
Electromagnet, 41...core, 42...bobbin, 42a
...Front flange, 44a, 44b...Terminal, 5
0a, 50b... Lead wire, 51... Concave portion, 5
2a, 52b...through groove, 53...protrusion, 53
a, 53b...Circular part, 54a, 54b...Protrusion part, 55a, 55b...Tang piece.

Claims (1)

[Scope of utility model registration request] A first frame 1 made of synthetic resin and a second frame made of metal
A U-shaped counter frame constituted by a frame 2, a plurality of number wheels 7 mounted on a shaft 3 supported on both side plates of this counter frame, and a number wheel 7 interposed between these number wheels. In an electromagnetic counter equipped with a pinion 8 that performs a shift operation and an electromagnet 40 that advances the number wheel via a feeding means consisting of an armature 36 and a pole 31, a bobbin 42 of the electromagnet is attached to the first frame. Through-holes 52a, 52b through which terminals 44a, 44b fixed to one flange 42a pass.
At the same time, a concave portion 51 is provided on the outer surface of the through hole to accommodate external connection lead wires 50a and 50b connected to the terminal, and the upper and lower edges of the concave portion protrude into the concave portion. a first protrusion 53 having arcuate portions 53a and 53b protruding from the outside; and tongue pieces 55a and 55b extending outward from the tip of the external connection lead wire in the form of an eave at the exit portion of the external connection lead wire. Second protrusion 54a, 5
4b, and hook-shaped edges 61a, 61b are formed protruding from the other flange 42c of the bobbin corresponding to the outlet portion, and the external connection lead wire connected to the terminal is connected to the second flange 42c of the bobbin. 1. An electromagnetic counter, characterized in that it is guided into the recess in a meandering manner by the first protrusion and the second protrusion, and is held by the tongue and pulled out from the outlet.