JPS586627B2 - Electromagnetic printing and recording device - Google Patents

Description

[Detailed description of the invention] This invention relates to an electromagnetic printing and recording device.

The applicant previously proposed that the cylindrical yokes b, c of the electromagnet be placed on the central axis o-o of the cylindrical parts b, c of the cylindrical yokes b, c of the electromagnets, which are disposed oppositely with a gap a, as shown in FIG. Both cylindrical parts b of c,
A circular mound-shaped armature d that allows access to and from c.
An armature axis e is provided, and the armature d is normally biased toward one of the cylindrical yokes d, and at least the end f of the armature d is located approximately at the center of the gap a between the pair of cylindrical yokes b and c. Positioned electromagnet (1972 patent application No. 643)
No. 60) was proposed, and when the solenoid g provided on the outer periphery of the cylindrical yokes b and c is excited, the end f of the armature d receives the action of the attractive force F of the cylindrical yoke b, as shown in Fig. 2A. It moves in the direction of the receiving arrow Y to fill the gap y, but
If the armature d separates from the cylindrical yoke C, a suction force F will be applied from the cylindrical yoke C, so that it will eventually come to a balanced stop at the position shown at the opening in Figure 2, and the end f of the armature d will start. The position (A in Figure 2) is set in a position where the magnetic field is strong, so that the start is performed with strong force and the motor stops in the state shown in Figure 2, so that the armature does not collide with the electromagnet as in the conventional case. In this example, the armature stops silently so as not to cause the armature to stop. However, in order to use this electromagnet to drive a writing instrument such as a ballpoint pen, it is necessary to use the method shown in Figure 3. , it is necessary to move the ballpoint pen i by an electromagnet through the lever device h, which is a little lacking in compactness, and also the two cylindrical yokes are aligned on the same central axis o-o, yet a gap y is formed. In order to do this, it is necessary to create a step l at the joint between the outer cylinders j and k, which has the disadvantage of making the structure a little complicated and increasing the processing cost.

The object of the present invention is to provide an electromagnetic printing and recording device that can eliminate the above-mentioned drawbacks.

The structure of this electromagnetic printing and recording device will be explained based on the illustrated embodiment. As shown in FIG. 3
The other cylindrical yoke 5, which is also made of magnetic metal and is opposite to the cylindrical yoke 3, is provided in the opening 4 of the bottomed cylindrical body 1, and a flange 6 protruding from the outer periphery of the cylindrical yoke 5 is provided. By hardening, the one cylindrical yoke 3 and the other cylindrical yoke 5 are placed opposite each other via the non-magnetic ring 7, and the inner wall 8 of the bottomed cylindrical body 1 and the two cylindrical yokes 3, A solenoid 9 is loaded into the space formed by the outer wall of the cylindrical yokes 3 and 5, and a writing instrument 11, such as a ballpoint pen, which has a circular armature 10 fixed directly to the outer periphery of the cylindrical yokes 3 and 5, is attached to one of the cylindrical yokes 3 and 5. Both cylindrical yokes 3 and 5 are provided movably in the direction of the center axis XX by means of bearing pieces 14 and 15 provided at the outer edge 12 and the inner part 13 of the yoke 3, respectively, and a substantially central portion of the non-magnetic ring is provided. (To be exact, slightly below the center of the non-magnetic ring 7) is the armature 1.
The armature 10 is arranged so that one end surface 16 (lower end surface in FIG. 4) of the armature 10 is located, a ring-shaped buffer material 17 is brought into contact with the other end surface of the armature 10, and a ring-shaped buffer material 17 is placed around the outer end of the other cylindrical yoke 5. One of the cylindrical yokes 3 is fixed with a cap 18 screwed onto the engraved screw 21 so as not to slip out of the cylindrical yoke.
A coil spring 20 is stretched between the end surface 22 of the shaft bearing piece 15 provided therein and the one end surface 16 of the armature 10, and a ring-shaped buffer material 23 is provided on the end surface 22 of the shaft bearing piece 15. It is something that

In addition, 24.25 in FIG. 4 shows the electric wire for the solenoid.

Furthermore, although FIG. 4 shows the armature 10 directly fixed to the writing instrument 11, which is a ballpoint pen, FIG.
The armature 10 is shown fixed to a writing instrument container 24' which can accommodate the writing part 11' of the writing instrument 11 so as to protrude therefrom.

In FIG. 5, reference numeral 26 indicates a camp in which the writing implement 11 is attached to prevent it from slipping out from the writing implement container 24'.

In addition, the non-magnetic ring 7 is welded to both the cylindrical yokes 3 and 5. Since this embodiment has the above-mentioned configuration, when the solenoid 9 is energized, the one end surface 16 side of the armature 10 becomes cylindrical. The coil spring 20 is activated by the attraction force of the shaped yoke 3.
However, when the armature 10 separates from the other cylindrical yoke 5, a suction force is applied from the cylindrical yoke 5, so the armature descends, but balances and stops at an appropriate position, during which time the writing instrument 11 Although not shown, a mark is placed on a sheet of paper below the transcription section 11' in the transcription section 11', and when the solenoid 9 is demagnetized, the armature 10 returns to its original position due to the elasticity of the coil spring 20.

During this time, the armature 10 does not stop by colliding with the electrodes in both the up and down directions as in the conventional case, but the stop is made silently.

The purpose of the cushioning materials 17 and 23 is to prevent the armature 10 from moving too much due to inertia.

This invention has the above-mentioned structure and action, and when the collar 6 of one cylindrical yoke 5 is fitted into the opening 4 of the bottomed cylindrical body 1, the central axes of both cylindrical yokes 3 and 5 coincide. Therefore, assembly is easy 9, and the gap between the two cylindrical yokes 3 and 5 can be determined by the non-magnetic ring 1, which simplifies the overall configuration. The gap can also be accurately determined, and the shaft of the armature 10 is At 11,
Directly or indirectly through the writing utensil 24',
The motion transmission mechanism can be omitted and the whole can be made compact.
It has remarkable effects such as being able to perform the operation more reliably.

Incidentally, when the writing instrument 24 is provided with the armature 10, the writing instrument 11, which is a ballpoint pen, can be easily and easily replaced, and has a remarkable effect.

[Brief explanation of the drawing]

Figure 1 is a front view showing a vertical cross section of half of the electromagnet proposed by the applicant, Figure 2 A is an explanatory diagram of the operation, and Figure 3 is a conventional electromagnet used to drive a writing instrument. Fig. 4 is a longitudinal sectional front view of one embodiment of the electromagnetic printing and recording device according to the present invention, and Fig. 5 is a longitudinal sectional front view of another embodiment for integrating a writing instrument with an armature. 1 is a bottomed cylinder, 2 is a bottom, 3 is a cylindrical yoke, 4 is an opening, 5 is a cylindrical yoke, 6 is a collar, 7 is a non-magnetic ring, 8 is an inner wall,
9 is a solenoid, 10 is an armature, 11 is a writing instrument,
14.15 is a bearing, 16 is one end face of armature, 19
20 is the other end surface, 20 is a coil spring, and 23 is a ring-shaped cushioning material.

Claims (1)

[Claims] 1. One cylindrical yoke 3 made of magnetic metal is provided passing through the center of the bottom 2 of the bottomed cylinder 1, and a similar cylindrical yoke 3, which is opposite to the cylindrical yoke 3, is provided in the opening 4 of the bottomed cylinder 1. The other cylindrical yoke 5 made of magnetic metal is fitted with a collar 6 protruding from the outer periphery of the cylindrical yoke 5, so that one cylindrical yoke 3 is connected to the other cylindrical yoke 5 as a non-magnetic ring. A solenoid 9 is installed between the inner wall 8 of the bottomed cylindrical body 1 and the outer walls of the cylindrical yokes 3 and 5, and penetrates through the cylindrical yokes 3 and 5. Armature 1 fixed directly or indirectly to the outer periphery
0 is provided so as to be movable in the direction of the central axis XX through a bearing piece 14.15 provided in one cylindrical yoke 3, and the armature 1 is provided approximately in the center of the ring 7.
0, and a ring-shaped cushioning material 11 is brought into contact with the other end surface 19 of the armature 10.
The buffer material 17 is fixed inside the cylindrical yoke 5 with a cap 18 screwed onto the upper end of the cylindrical yoke 5, and is connected to the shaft bearing piece 15 fixedly installed inside the other cylindrical yoke 3 and the one end of the armature 10. An electromagnetic printing and recording device characterized in that a coil spring 20 is stretched between the shaft support piece 15 and the end face 16, and a ring-shaped cushioning material 22 is provided on one end face of the shaft bearing piece 15.