JPS5811666B2 - Counter and its assembly method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a counter, and more particularly to a counter and a method of assembling the same that takes into consideration ease of assembling a number wheel.

Conventionally, this type of counter uses a counter frame having a substantially U-shape, and a number wheel shaft and a pinion shaft are horizontally suspended between opposing side plates of the counter frame.

Therefore, in such a counter, when incorporating a plurality of number wheels and a group of pinions responsible for carrying them, one wheel is inserted between the opposite side plates for each shaft that is sequentially inserted from the outside of one side plate. The extremely troublesome work of mounting the shafts one by one must be done, and in particular, this work requires a great deal of skill as it is necessary to align the displayed numbers on each number wheel and then engage the pinion. However, there were problems in terms of ease of assembly.

The present invention has been made in view of the above circumstances, and uses an extremely simple structure in which the opposing side plates constituting the counter frame are each formed as separate frames, and a numerical wheel shaft is preliminarily installed vertically on one of the frames. To provide a counter and a method for assembling the same, in which parts, especially the number wheel, can be assembled very easily and can be assembled automatically, thereby greatly reducing manufacturing costs.

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

1 to 4A and 4B show an embodiment of a 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. ing.

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 an abbreviated shape and is also the other side of the counter frame. A second frame that constitutes a side plate and a bottom plate, and these first and second frames
By combining and integrating the frames 12, a substantially U-shaped counter frame is formed.

That is, according to the present invention, by forming the opposing side plates constituting the counter frame as separate frames, it is possible to easily mount the number wheel and the pinion meshed thereto on the shaft that is suspended horizontally between these side plates. It was designed so that

To explain this in detail, inside the first frame 1,
A number wheel shaft 3 and a pinion shaft 4 are integrally installed vertically, and holes 5 and 6 are bored in the side plate 2a of the second frame 2 to support the other ends of these shafts 3 and 4. There is.

Of course, the shafts 3.4 may be separate parts and installed inside the first frame 1 made of a metal plate, but the number of parts can be reduced by integrally molding them from a synthetic resin material as described above. This is advantageous because it allows for

Further, the hole portion 5.6 of the second frame 2 does not necessarily have to be a through hole, but may be a simple blind hole.
Any structure that can support the other ends of both shafts 3 and 4 when assembled with the frame 1 is acceptable.

According to such a configuration, the assembly of the plural number wheels 7 and the pinion 8 which is interposed between the number wheels 7 and performs a shifting operation can be performed extremely easily.

That is, the number wheel 7 and the pinion 8 may be alternately inserted into the respective shafts 3 and 4 vertically installed on the first frame 1 from the other end side.

At this time, it is necessary to adjust the position of the displayed numerals on each number wheel 7, but it is clear that this can be done much easier than working between the opposing side plates of the counter frame as in the conventional case.

After the number wheel 7 and pinion 8 are mounted, the counter/seam is assembled by combining the second frame 2 with the first frame 1.

As shown in FIG. 1, connection pieces 9 and 10 are integrally provided on the upper and lower edges of the first frame 1 and project in the same direction as the shaft 3. .

Then, by inserting and removing the bent pieces 11 and 12 on the second frame 2 side into the fitting grooves 9a and 10a provided at the tips of these connecting pieces 9 and 10, both frames 1 and 2 are integrated. be done.

At this time, the protrusions 13a and 13b protruding from the side edges of the bottom plate part 2b of the second frame 2 engage with the notch grooves 14a and 14b on the side edges of the first frame 1, and further the lower part of the first frame 1 The protrusion 15 protruding from the connecting piece 10 is also engaged with the cutout groove 16 of the second frame 2.

Further, according to this embodiment, each member constituting the electromagnetic counter is assembled into a unit by appropriately assembling the above-mentioned 1st and 2nd frames 1.2, so that the entire assembly can be easily performed. has been done.

That is, an electromagnet 17 is fixed together with a core 18 inside the bottom plate part 2b of the second frame 2, and an armature 19 has one end thereof connected to the side plate part 2a of the second frame 2 so as to face the core 18. The groove 20 is inserted into the groove 20 formed in the groove 20 .

In the figure, reference numeral 21 denotes a tension spring for restoring the armature, which is hooked between cut and raised pieces 21a and 21b provided on the outer surface of the armature 19 and the inner surface of the second frame 2.

Terminals 22a and 22b are press-fitted into the front flange 2'3a of a synthetic resin bobbin 23 constituting the electromagnet 17, and both ends of a coil 24 wound around the bobbin 23 are connected.

On the other hand, inside the first frame 1, the end portion 19a of the armature 19 is engaged at the time of assembly, and rotated by the swing thereof, and a ratchet 7 integrated with the least significant digit wheel 7 is disposed inside the first frame 1.
A support shaft 1a is integrally provided to support a pole 25 having integral pawl portions 25a and 25b that engage with the pole 1a.

Further, through holes 26a are provided in portions corresponding to the terminals 22a and 22b.

26b is drilled, and this through hole 26a.

Continuing from 26b, there is a concave portion 2 on the outside of the first frame 1.
7 is formed.

This concave portion 27 allows soldering of the external lead wires 28a, 28b connected to the terminals 22a, 22b from outside the counter frame, and also allows these lead wires 28a, 2. This is a part to firmly hold 8b and prevent wire breakage due to external tensile force.

Note that these lead wires 28a and 28b are guided along the inside of the bottom plate portion 2b of the second frame 2 via notches 29a and 29b provided at the rear end of the first frame 1,
Moreover, it is pulled out to the outside through notches 30a and 30b provided at the bent portions of the side plate portion 2a and the bottom plate portion 2b of the second frame 2.

Further, numeral 31 in the figure is a cover having a substantially housing shape and having a counter display window (not shown).

As explained above, according to the counter according to the present invention,
The opposing side plates that make up the counter frame are made into separate frames, and the number wheel shaft is pre-installed vertically on one of the frames, so although the configuration is simple, the ease of assembling the number wheel is greatly improved. As a result, the overall assembly work becomes easier and manufacturing costs can be reduced.

In particular, according to the present invention, it is only necessary to alternately insert and insert the number wheel and pinion into the respective shafts vertically installed on the first frame side, so positioning of the number wheel can be easily performed, and it does not require any skill. It has the advantage that it can be easily assembled by anyone without requiring any additional steps, and furthermore, it can be expected to be automatically assembled.

It goes without saying that the present invention can be applied not only to the electromagnetic counter described in the above-mentioned embodiments but also to various counter devices.

[Brief explanation of drawings]

The figures show an embodiment in which the counter and its assembly method according to the present invention are applied to an electromagnetic counter, in which Fig. 1 is an exploded perspective view showing the overall general configuration, Fig. 2 is a perspective view of main parts showing the assembled state, FIG. 3 is a cross-sectional plan view of only the counter frame, and FIGS. 4A and 4B are a side view and a side sectional view. 1...First frame, 2...Second frame, 3...Number wheel shaft, 4...
...Pinion shaft, 7...Number wheel, 8...
...Pinion.

Claims (1)

[Scope of Claims] 1. A number wheel shaft that supports a plurality of number wheels and a pinion shaft that supports a pinion that is interposed between the number wheels and performs a shift action are supported between opposing side plates. In the counter including a counter frame, the counter frame includes a first frame having the one side plate and on the inside of which the number wheel shaft is vertically disposed, and a first frame having the other side plate and the number wheel shaft. A counter comprising a second frame supporting the other end. 2. A first frame on which the numerical wheel shaft and the pinion shaft are vertically disposed, and a second frame that is assembled with the first frame to form a counter frame, and that supports the other ends of the numerical wheel shaft and the pinion shaft. After preparing a frame and inserting a plurality of numbered wheels and pinions alternately into each shaft on the first frame side, the second frame is combined with the first frame to form an integral unit. A method for assembling a counter, characterized in that it is coupled to.