JPH07152889A - Electromagnetic counter and assembly method therefor - Google Patents

Abstract

PURPOSE:To facilitate an assembling operation without the need of skills and to automatize assembly. CONSTITUTION:Number 2 in the figure is a frame provided with a side face plate 3, 15 is a digit wheel, 20 is a pinion, 21 is a pole, 27 is a coil bobbin, 45 is a york and 60 is a lead wire. Then, both side face plates of the frame 2 are divided and the flange 29 of the coil bobbin 27 constitutes one of the side face plates and is freely attachably and detachably integrated with the side face plate 3. Also, shafts 5 and 6 are integrally and vertically provided on the side face plate 3 and an attachment groove 38 where a terminal 50 to which the lead wire 60 is attached is inserted is recessedly provided on the surface of the flange 29.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called electromagnet horizontal placement type in which a U-shaped yoke is horizontally installed between both side plates of a frame having a U-shaped cross section, and an electromagnet is installed in the same direction as a numeral wheel. The present invention relates to an electromagnetic counter and an assembling method thereof.

[0002]

2. Description of the Related Art Generally, an electromagnetic counter of this type includes a frame having U-shaped cross-sections having both side plates, two shafts extending laterally between the both side plates, and a number wheel mounted on these shafts. A pinion for carry that is interposed between the number cars,
A pole having a feed claw that is swingably supported on the side plate, a U-shaped yoke having two arms that are laterally bridged between the side plates, and one arm of the yoke as the core are arranged in the same direction as the number wheel. And a coil bobbin around which a coil is wound. When assembling this electromagnetic counter, while inserting the two shafts from one side plate of the frame, the shafts of the numeral wheel and the pinion are alternately mounted on the shafts and the tip of the shaft is attached to the other side plate. To support. Then, the pole is swingably supported on the side plate, and while inserting the yoke from one side plate side, one arm of the yoke is inserted into the hollow part of the coil bobbin, and the tips of the two arms of the yoke are inserted on the other side. It is attached by fitting it into the hole formed in the face plate.

[0003]

By the way, as is well known, when a numeral wheel and a pinion are incorporated in a shaft in an electromagnetic counter, the numeral wheel and the pinion are alternately inserted into the shaft so that there is no character deviation. Work that requires skill such as performing is necessary. Moreover, in the above-described conventional electromagnetic counter, the frame is formed in a U-shaped cross section, so when incorporating a numeral wheel and a pinion, work is performed while inserting one end side of both shafts from one side plate at the same time. Therefore, there is a problem that it is extremely complicated and requires assembling time. In addition, since the coil bobbin is arranged in the frame, the work of connecting the terminal to which the coil is connected and the lead wire becomes work after the coil bobbin is mounted in the frame.
Since the connection work is inside and outside the frame, there is a drawback that it becomes a complicated work.

Therefore, the present invention has been made in view of the above-mentioned conventional problems or drawbacks, and an object of the present invention is to make an assembling work easy without requiring skill and enabling automatic assembling. Another object of the present invention is to provide an electromagnetic counter and an assembling method thereof.

[0005]

In order to achieve this object, an electromagnetic counter according to the present invention includes a numeral wheel and a U-shaped yoke having two arms between both side plates of a frame having a U-shaped cross section. An electromagnetic counter in which one arm of a yoke is laterally crossed and a core is inserted into the core, and a center hole of a bobbin having a pair of flanges around which a coil is wound is inserted. , One side plate integrally formed with a shaft for rotatably supporting a numeral wheel and a carry-on pinion interposed between the numeral wheels, and the other side surface plate is constituted by one of the collars of the bobbin so that a tip of the shaft is formed. A detachable engagement means is provided between the flange and one side plate of the frame, and a mounting groove for mounting the lead wire lead-out terminal is provided on the surface of the flange. Further, the method of assembling the electromagnetic counter according to the present invention, the number wheel and the carry pinion are assembled from one direction to the shaft of the one side plate of the frame, and then the one side plate of the frame, Assemble one flange of the bobbin with the lead wire lead terminal assembled from the same direction.

[0006]

According to the present invention, since both side plates of the frame are divided and one side plate side is opened, the numeral wheel and the pinion are incorporated into the shaft integrally formed on one side plate from the open side. Be done. Further, since the flange of the coil bobbin constitutes the other side plate, the mounting groove of the lead wire lead-out terminal recessed in the surface of the flange is exposed to the outside.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of an electromagnetic counter according to the present invention,
2 also shows a numeral wheel, FIG. 3 shows a pole, FIG. 4 shows a coil bobbin, FIG. 5 also shows a terminal, FIG. 6 shows a terminal inserted in a coil bobbin, and FIG. The wire is press-fitted, and FIG. 8 is a front view of the same. In these figures, 2 is a side plate 3 and a bottom plate 4.
The frame is made of synthetic resin, and the side plate facing the side plate 3 is absent.

On the side plate 3, shafts 5 and 6 for a numeral wheel and a pinion having sharpened tips are vertically provided, and a dowel 7 is formed in a projecting manner so as to sandwich the dowel 7. A pair of holes 8 are formed. Further, two pairs of distance portions 9 and 10 are vertically provided above and below the front portion and the rear portion of the side surface plate 3, and the claws 1 formed so as to face each other are provided in the distance portions 9 and 10.
The distance portion 9 is provided with the nails 2 and 13, and the nail 11 formed in a direction orthogonal to the nails 12 and 13, respectively.

Reference numeral 15 denotes a numeral wheel. As shown in detail in FIG. 2, a ratchet gear 17 is formed at a central portion on one side surface and a transmission gear 16 is formed on a peripheral surface portion, and a peripheral wheel is provided on the other side surface. A segment gear 19 is formed on a part of the surface. Thus, one ratchet wheel 17
Since the transmission gear 16 and the transmission gear 16 are provided, it is possible to use both the lowest digit numeral wheel 15a and the upper digit numeral wheel 15b in this numeral wheel. Therefore, it is possible to reduce the cost of the molds to one, because the number of molds required in the past is two. In addition, in the numeral wheel 15, the side surface on which the ratchet gear 17 is formed is formed in a concave shape, and the concave fitting portion 18 is provided.
Is in a state in which a part of the root portion is immersed in the concave fitting portion 18. That is, of the total tooth height T, t ₁ is set in the recessed fitting portion 18 and only t ₂ is projected from the surface. Therefore, despite the provision of the ratchet gear 17 and the transmission gear 16, the thickness of the entire numeral wheel is not increased as compared with the conventional case.

Reference numeral 21 denotes a pole, which has a hole 22 which is fitted and inserted into the dowel 7 at a substantially central portion and serves as a swing center of the pole 21, and a projection 23 to which a return spring 25 is hooked is formed at a rear portion. The front portion is formed into a bifurcated shape, and a pair of claw portions 24 are provided at the tip. As shown in detail in FIG. 3, the claw portion 24 is formed so as to project in the thickness direction of the pole 21 by t ₁ .

Reference numeral 27 denotes a coil bobbin which is entirely made of synthetic resin, and comprises a pair of collars 28 and 29 and a hollow body portion 30 around which a coil 31 is wound to connect them. One flange 29 is composed of a thick base portion 32 formed at a position corresponding to the other flange 28 and an extension portion 33 extending from the base portion 32, and the entire outer shape of the side plate of the frame 2. It has almost the same shape as 3. A support hole 34 into which the tip ends of the shafts 5 and 6 are fitted is formed in the extension portion 33, and a projection 35 into which the pawl 11 engages and a recess 36 into which the pawl 12 engages are formed. A notch 37 into which an arm 46 of a yoke 45 described later is fitted is provided.

A pair of vertical mounting grooves 38 are provided on the surface of the base 32.
A convex portion 39 is arranged to face the lower surface, and a small-diameter dowel 40 is formed to project on the bottom surface. Reference numeral 41 denotes a convex portion vertically projectingly formed at the end portion of the mounting groove 38 for winding the lead wire 60 described later in a meandering manner. Reference numeral 42 is a step portion with which the claw 13 is engaged, 43 is a lead-out groove for pulling out the lead wire 60, 44 is an arm portion 4 of a yoke 45 provided in the body portion 30.
7 is a hollow portion into which the fitting is inserted. Reference numeral 45 is a U-shaped yoke having arm portions 46 and 47, and the arm portion 47 forms the core of the coil 31.

The reference numeral 50 indicates a thin terminal plate to which the coil 31 and the lead wire 60 are connected. They are connected by 58. A U-shaped groove 52 into which the lead wire 60 is inserted is formed in the terminal piece 51, and a thin groove 54 is formed in the center of the U-shaped groove 52 so as to project from both side walls of the groove 52. Two pairs of thin flakes 53 are provided. Reference numeral 55 is a lead wire pressing piece that is opposed to the other, 56 is a mounting hole, 57 is a coil mounting portion that connects the start end and the end of the coil 31 and that protrudes in directions away from each other, and 59 is a cutting position. It is a cutting line shown.

Next, a method of assembling the electromagnetic counter having such a configuration will be described. First, replace the coil 31 with the coil bobbin 2
It is wound around the body 30 of No. 7. Next, in order to attach the terminal plate 50 to the collar 29 of the coil bobbin 27, the terminal piece 51 is inserted into the attachment groove 38 of the coil bobbin 27 from the direction A, and the attachment hole 56 of the terminal piece 51 is inserted into the dowel 40 for positioning. Then, the terminal plate 50 is temporarily fixed to the collar 29 of the coil bobbin 27, and the dowel 40 is fixed by heat caulking. Then, as shown in FIG. 6, the connecting portion 58 of the terminal 51 is cut off from the cutting line 59. As described above, since the pair of terminals are connected in advance and cut after the mounting, the terminal pieces 51 in which the coil mounting portions 57 have different directions from each other.
Can be installed in the wrong direction, and
Since the complexity of assembling the extremely small terminal piece 51 by itself can be eliminated, the assembling work time can be shortened and the mistake in assembling the terminal piece 51 can be eliminated.

Next, the lead wire 60 is inserted into the U-shaped groove 52 of the terminal piece 51 from the direction A. A part of the lead wire 60 inserted into the U-shaped groove 52 is press-fitted into the narrow groove 54, and at this time, the projecting pieces 53 facing each other cut the covering portion of the lead wire 60 and project to the inner lead wire. The piece 53 becomes conductive. After that, the lead wire retainer 55 is bent to prevent the lead wire 60 from coming off, and the rear end portion is drawn around the convex portion 41 and guided by the meandering into the lead-out groove 43, and then pulled out from the lead-out groove 43. In this manner, the terminal piece 51 is inserted into the mounting groove 38 of the coil bobbin 27 constituting the side plate of the frame exposed to the outside, and the lead wire 60 is inserted into the U-shaped groove 52 of the terminal piece 51. Since the projecting piece 53 cuts the covering portion of the lead wire 60 so that the projecting piece 53 is electrically connected to the lead wire 60, the terminal piece 51 and the lead wire 60 are inserted from the A direction. The terminal piece 51 and the lead wire 60 can be connected by simply inserting the lead wire 60 into the U-shaped groove 52 of the terminal piece 51, which facilitates the assembly. Then, the start end and the end of the coil 31 are wound around the coil attachment portion 57 of the terminal piece 51 and fixed by soldering for connection.

In this way, when the coil bobbin assembly in which the terminal plate 51 and the lead wire 60 are assembled to the coil bobbin 27 in advance is constructed, next, the side plate 3 is placed so that the tips of the shafts 5 and 6 of the frame 2 face upward. Place it on a workbench (not shown). In this state, the hole 22 of the pole 21 is fitted into the dowel 7 of the frame 2 so that the pole 21 can swing on the dowel 7, and the spring 25 is hung over the protrusion 23 and the protrusion (not shown) of the frame 2. Next, the number wheel 15 and the pinion 20 are alternately inserted into the shafts 5 and 6 so that there is no character shift as is conventionally known. At this time,
The numeral wheel 15 includes the lowest digit numeral wheel 15a and the upper digit numeral wheel 1.
Since 5b is the same number car, there is no mistake in the assembly due to mistaken insertion order, so it is continuously inserted into shafts 5 and 6 without checking whether it is the lowest digit number car. As a result, it is possible to shorten the assembly work time and prevent the occurrence of malfunctions due to incorrect assembly.

In this way, the numeral wheel 15 and the pinion 2
The coil bobbin assembly described above is assembled to the frame 2 in which the 0 and the pole 21 are assembled. That is, the projections 35 are provided with the claws 11 and the recesses 36 are provided with the claws 12 so that the tips of the shafts 5 and 6 are fitted into the holes 34 of the coil bobbin 27.
Further, by engaging the claws 13 with the step portions 42, respectively, the coil bobbin 27 is united with the frame 2, and the collar 29 is configured as the other side plate of the frame 2. Then, the arms 46 and 47 of the yoke 45 are attached to the coil bobbin 27.
Insert it into the notch 37 and the hollow part 44 of the
It is fitted into the hole 8 and assembled.

As described above, the side plate of the frame 2 is divided, and one flange 29 of the coil bobbin 27 is formed as the other side plate, so that the numeral wheel 15, the pinion 20, the pole 21, etc. are opened from the open side of the frame 2. Since it is possible to assemble, it becomes easy to assemble. Further, since the one flange 29 of the coil bobbin 27 is configured as the other side plate, the mounting groove 38 of the lead wire drawing terminal 50 can be exposed to the outside, so that the terminal 50 can be easily mounted. . Further, the shafts 5, 6 and the dowel 7 are integrally formed on the side plate 3 of the frame 2, the numeral wheel 15, the pinion 20 and the pole 21 are assembled from the A direction, and the coil bobbin assembly and the yoke 45 are also in the same direction. Since it can be assembled from above, there is no need to invert the frame at the time of assembly, work efficiency is improved, and automation can be easily introduced.

In the electromagnetic counter thus assembled, the protruding part of the claw portion 24 of the pole 21 enters the concave fitting portion 18 of the numeral wheel 15 and the concave fitting portion 18 of the ratchet gear 17 inside. Since it also engages with the recessed portion, there will be no poor engagement. When energization and de-energization of the current to the coil 31 is repeated, the stepping motion of the conventionally known numeral wheel is performed. That is, the electromagnet including the yoke 45 is excited and de-excited, the pole 21 oscillates around the dowel 7, and the pair of claw portions 24 of the pole 21 are alternately engaged with the ratchet gear 17 to set the lowest digit. When the numeral wheel 15a advances and the lowest digit numeral wheel 15b makes one revolution, the pinion 2
The numeral wheel 15b of the next digit is stepped through 0 to carry a digit, and the upper digit is sequentially stepped.

[0020]

As described above, according to the present invention, the shaft between the side plates of the frame is divided, and one side plate rotatably supports the numeral wheel and the carry pinion interposed between the numeral wheels. The other side plate is formed integrally with one side of the bobbin to support the tip of the shaft, and a detachable engaging means is provided between this side wall and one side plate of the frame. Since the mounting groove for mounting the lead wire lead-out terminal is formed on the surface of the and the number wheel and the pinion are attached to the shaft from the divided open side of the frame, the number wheel and the pinion can be easily assembled. Further, since the flange of the coil bobbin constitutes the other side plate, the coil can be connected to the terminal and the lead wire can be connected at the same time, and the lead wire lead-out terminal mounting groove formed on the surface of the flange is external. Since it is exposed to, the lead wire and the terminal can be easily connected.

Further, the numeral wheel and the carry-in pinion are assembled from one direction to the shaft of one side plate of the frame, and then the lead wire lead-out terminal is assembled to one side plate of the frame. Since one of the collars of the bobbin is assembled from the same direction, all the components can be assembled from the same direction to the one side plate of the frame, which facilitates the introduction of automation of assembly.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an electromagnetic counter according to the present invention.

FIG. 2 shows a numeral wheel of an electromagnetic counter according to the present invention,
(A) is a side view, (b) is a front view, and (c) is a front sectional view.

FIG. 3 shows a pole of an electromagnetic counter according to the present invention,
(A) is a front view and (b) is a plan view.

FIG. 4 shows a coil bobbin of an electromagnetic counter according to the present invention, (a) is a front view and (b) is a plan sectional view.

FIG. 5 shows terminals of an electromagnetic counter according to the present invention,
(A) is a plan view, (b) is a side view, and (c) is a front view.

FIG. 6 is a front view in which terminals are assembled to the electromagnetic counter coil bobbin according to the present invention.

FIG. 7 is a front view showing a lead wire assembled to the electromagnetic counter coil bobbin according to the present invention.

FIG. 8 is a front view of an electromagnetic counter according to the present invention.

[Explanation of symbols]

 2 frame 3 side plate 5, 6 shaft 7 dowel 8 hole 11, 12, 13 claw 15 number car 15a lowest digit number car 15b upper digit number car 16 transmission gear 17 ratchet gear 18 concave fitting part 19 segment gear 21 pole 24 claw Part 27 Coil bobbin 29 Collar 31 Coil 33 Extended part 35 Protrusion 36 Recess 38 Mounting groove 42 Step part 45 Yoke 50 Terminal plate 52 U-shaped groove 53 Projection piece 57 Coil mounting part 58 Coupling part 59 Cutting part 60 Lead wire

Claims (2)

[Claims] 1. Between both side plates of a frame having a U-shaped cross section,
An electromagnetic counter in which a U-shaped yoke having a numeral wheel and two arms is horizontally mounted, one arm of the yoke is configured as a core, and a center hole of a bobbin having a pair of flanges around which a coil is wound is inserted. In the above, the frame is divided between both side plates, and one side plate is integrally formed with a shaft for rotatably supporting a numeral wheel and a carry pinion interposed between the numeral wheels. Of the flange to support the tip of the shaft, a detachable engaging means is provided between the flange and one side plate of the frame, and a lead wire lead terminal is attached to the surface of the flange. An electromagnetic counter characterized by having a mounting groove recessed. 2. The electromagnetic counter according to claim 1, wherein
The numeral wheel and the carry-on pinion were attached to the shaft of one side plate of the frame from one direction, and then the lead wire lead-out terminal was attached to one side plate of the frame. An assembling method of an electromagnetic counter, characterized in that one flange of a bobbin is assembled from the same direction.