JPH0517723Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electromagnetic counter that has a simple structure and can securely fix an electromagnetic coil in a predetermined position.

[Conventional technology]

Conventionally, this type of electromagnetic counter has a plurality of number wheels rotatably mounted on a number axle, a core and an electromagnetic coil, and the number wheel of the lowest digit is oscillated by the excitation of the coil. It is generally composed of a pole for advancing and rotating, a plurality of shift pinions interposed between each number wheel for shifting, and a frame in which these components are assembled. Among these, the electromagnetic coil requires some kind of structure to restrict movement in the axial direction relative to the core. Conventionally, a knurl is formed in a part of the core, and this is used to secure the electromagnetic coil onto the core. I try to do that.

However, in an electromagnetic counter with such a configuration, the clamped electromagnetic coil loosens due to shocks, vibrations, etc. and moves freely on the core, causing the coil wire to be pulled and disconnected, or to be placed opposite the core. There is a fear that an accident could occur if it collides with the installed armature and obstructs its operation.

Therefore, as a means to solve this problem, an electromagnetic counter (Utility Application 1983-1993) was developed in which a holding piece was cut and raised in a part of a frame made of a metal plate, and the electromagnetic coil was held by this holding piece.
No. 142296 (see Utility Model Application Publication No. 61-60370) is known.

[Problem that the invention attempts to solve]

However, in such conventional electromagnetic counters, cutting and forming the holding piece is troublesome, high dimensional accuracy cannot be expected, and the electromagnetic coil tends to wobble.

[Means for solving problems]

The electromagnetic counter according to the present invention has been developed to solve the above-mentioned problems, and has a supporting piece that supports one end of the pole shaft integrally protruding from the inner bottom surface of the synthetic resin frame. The position of the electromagnetic coil is regulated by engaging the piece with the spool collar of the electromagnetic coil.

[Effect]

In this invention, the support piece that supports the pole shaft, which is integrally formed in the frame, also serves as a movement restricting member for the electromagnetic coil, which reduces the number of parts, enables miniaturization, and secures the electromagnetic coil. The location can be regulated.

〔Example〕

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

Figure 1 is Figure 2 I of the electromagnetic counter according to the present invention.
-I line sectional view, and FIG. 2 is an overall plan view with the cover of the counter cut away. In these figures,
The frame 1 is formed of a synthetic resin material into a box shape with an open front and top surface, and an electromagnetic coil 3 wound around the outer periphery of a spool 2 is located at the back of the frame 1.
is installed. The spool 2 has a pair of spool flanges 2A and 2B integrally provided at both ends, and is fitted into the core 4. The core 4 integrally has a yoke 5 bent into an L shape so as to embrace the front side surface of the electromagnetic coil 3, and
from the long hole 6 provided in the left side wall 1A of the frame 1.
The yoke 5 and the yoke 5 are inserted into the yoke 5. on the other hand,
A pole 8 extending in the front-rear direction is provided on the inner surface of the right side wall 1B of the frame 1 so as to be swingable in the vertical direction with its longitudinal intermediate portion serving as a swing fulcrum. Therefore, a support shaft 9 that projects from both sides is integrally provided at the longitudinally intermediate portion of the pole 8.
A shaft hole 10 whose one end is provided in the right side wall 1B
The other end is supported by the inner bottom surface 1 of the frame 1.
It is supported by a vertical groove 13 of a support piece 12 that is integrally provided on the support piece 1 . An armature 14 is fixed to the inner surface of the pole 8 in correspondence with the core 4 and yoke 5.

The spool 2 is attached to the left side wall 1A of the frame 1.
and the support piece 12, the right spool collar 2B comes into contact with the support piece 12, thereby causing the spool 2, in other words, the electromagnetic coil 3
is positioned and fixed, and its movement in the left and right direction is restricted and prevented. In this case, since the support piece 12 has elasticity and urges the spool collar 2B to the left in FIG. 1, it is possible to further prevent the electromagnetic coil 3 from wobbling.

Between the front ends of the side walls 1A and 1B of the frame 1, there is a number axle 16 which commonly rotatably supports a plurality of number wheels 15, for example, six number wheels 15, and a number wheel 16 which is interposed between the number wheels 15, respectively. A pinion shaft 18 that rotatably supports the shift pinions 17 in common is horizontally suspended in parallel. A ratchet 19 is integrally provided on the right side of the number wheel 15A of the lowest digit, and a double pawl 20 provided at the front end of the pawl 8 is attached to the ratchet 19 as the pawl 8 swings. They are configured to engage alternately. A segment pin (not shown) for digit feeding is integrally provided on the outer periphery of the right side of each number wheel 15, and a pin gear is provided on the outer periphery of the left side of the remaining number wheels 15 except for the lowest digit number wheel 15A. 23 protrudes over the entire circumference. The segment pin for digit movement of each number wheel 15 and the pinion 17 mesh with each other when the next number wheel is moved, and the pin gear 23 and the pinion 17 are always in mesh with each other.

The frame 1 in which the various constituent members described above are assembled is housed in a case 30 formed into a rectangular tube shape. A reading window 31 for reading the displayed value of each number wheel 15 is provided on the front surface of the case 30, and a transparent plate 32 is fitted and fixed to this window 31. Engagement holes 3 are provided on both side walls of the case 30.
5 and 36 are respectively provided, and engaging protrusions 37 and 38 protruding from the surfaces of the respective side walls 1A and 1B are fitted into these holes 35 and 36, respectively.
This prevents the frame 1 from coming off from the case 30.

In the electromagnetic counter having such a configuration, when an input signal is applied to the electromagnetic coil 3, the yoke 5 is moved from the armature 1 by excitation of the coil 3.
4 to suction operation. Then this armature 1
4, the pawl 8 swings about the support shaft 9, and its double claws 20 drive the ratchet 19 to rotate the lowest digit number wheel 15A in steps of half a character. On the other hand, when the electromagnetic coil 3 is deenergized,
The armature 14 is returned to its original position by the action of a spring (not shown), and the pawl 8 also swings in the opposite direction about the support shaft 9, and its double claws 20
The number wheel 15A is further rotated in steps of half a character. When the number wheel 15A rotates once, the segment pin for digit feeding engages with the pinion 17 to rotate the pinion 17 by a predetermined angle, and the rotation of the pinion 17 is transmitted via the pin gear 23 to the next digit number wheel 15B As a result, the number wheel 15B is rotated in steps of one character.

Note that the configuration and operation of such a counter are completely the same as those of the prior art.

By the way, the position of the electromagnetic coil 3 is restricted by the left side wall 1A of the frame 1 and the support piece 12, and floating in the left and right direction is completely prevented, so the spool 2 can be fixed to the core 4 with a set screw or the like. It is easy to assemble, and it is possible to reliably prevent the coil wire from breaking due to loose movement.

[Effect of idea]

As explained in detail above, the present invention prevents the coil from floating by engaging the spool collar of the electromagnetic coil with the support piece that protrudes from the inner bottom surface of the frame and supports one end of the pole shaft. Therefore, the electromagnetic coil can be firmly fixed and held on the core, and accidents such as disconnection of the coil wire and inoperability due to floating of the coil can be reliably prevented. In addition, the support piece has the functions of both a bearing member that supports the shaft of the pole and a stopper that restricts the movement of the electromagnetic coil, so there is no need to provide a special stopper member, reducing the number of parts and making it more compact. enable. Furthermore, we created a structure in which the electromagnetic coil and pole are separated using the support piece as a boundary wall, and the electromagnetic coil is incorporated into the frame independently, so common parts other than the electromagnetic coil can be pre-assembled into the frame and the customer The electromagnetic coil that meets the customer's requirements can be installed at the end, which has the advantage of not only being able to quickly respond to customer requests, but also eliminating the need to produce unnecessary inventory.

[Brief explanation of the drawing]

Fig. 1 shows an embodiment of the present invention; Fig. 2 I-I
A line sectional view, and FIG. 2 is an overall plan view with the cover of the electromagnetic counter cut away. 1...Frame, 2...Spool, 2A, 2B
... Spool collar, 3 ... Electromagnetic coil, 4 ... Core, 5 ... Yoke, 8 ... Pole, 9 ... Support shaft,
12... Support piece, 14... Armature, 15,
15A, 15B...number wheel, 16...number axle,
17...Pinion, 18...Pinion shaft.

Claims (1)

[Scope of utility model registration request] A support piece that supports one end of the pole's spindle is integrally provided on the inner bottom surface of the frame made of a synthetic resin material, and this support piece engages with the spool collar of the electromagnetic coil to support the coil. An electromagnetic counter characterized by regulating movement toward a pole.