JPH0142061Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a structure for preventing the belt from wobbling due to vibration during operation in recorders used in fish finders, acoustic depth sounders, etc., especially belt-driven recorders. It is related to.

A belt-driven recorder has a belt stretched between two pulleys placed a predetermined distance apart, a recording pen is attached to the appropriate position on this belt, and the belt is driven at a constant speed via a motor. A school of fish detected by ultrasonic waves sent into the water on a recording paper that is fed out at a constant speed in a direction perpendicular to the direction in which it moves.
As is well known, it is a device that continuously records information about the ocean floor, etc., and is widely used by the public.

However, recently, especially on small ships,
With the increase in the number of high-speed ships such as FRP (reinforced plastic) ships, vibrations are becoming more intense, and belt-driven recorders are affected by the vibrations.
The belt shakes, making the contact between the recording pen and the recording paper unstable and causing irregular recording.

The present invention corrects these disadvantages, prevents the belt from wobbling even under vibration, and takes into consideration the structure so that normal records without disturbance can be obtained at any time. This will be explained with reference to the diagram shown.

Fig. 1 shows an outline of the structure of the main parts, and Fig. 2 shows a cross section taken along line A-A' in Fig. 1, where 1 and 2 are pulleys, 3 is a belt tensioned on the pulley, and 4 is a cross section taken along line A-A' in Fig. 1.
and 5 are guide rails, 6 is a pen holder, 7 is a recording pen fixed on the pen holder 6, 8 is a magnetic holder, 9 and 10
11 is a sliding plate, 11 is a pedestal, 12 is a motor, 13 is a recording paper, and 14 is a mounting plate.

Although not shown in FIG. 1, in FIG. 2, 15 is a magnet fixed to the lower part of the magnetic holder 8, and 16 is a Hall IC fixed to a predetermined location on the pedestal, or a signal detection device such as a reed switch. Sensors 17 and 18 are adjustment screws.

When the motor 12 is driven, the belt 3 rotates in the direction of arrow X, and the recording pen 7 moves in the direction of arrow Y.
Recording paper 13 moves in the direction of arrow Z. When the recording pen 7 passes the O position on the scale (not shown), the magnet 15 is set to pass over the signal detection sensor 16, and generates a control pulse to send out an ultrasonic transmission pulse. is configured to do so.

In the present application, one end of the pen holder 6 and the magnetic holder 8 to which the belt 3 is fixed by adhesion or other appropriate means is bent into an L-shape, and fitted so as to hold the sliding plates 9 and 10, respectively. Move the adjustment screws 17 and 18 up and down and apply appropriate force to the guide rails 4 and 5, respectively, on the ends formed in a square shape to apply a pressing force to the sliding plates of the pen holder and magnetic holder. can be adjusted.

Therefore, even if the recorder vibrates, the belt 3
Since it is not affected by vibration, it moves along the sliding plates 9 and 10, and the recording pen 7 runs smoothly without shaking, and the magnet 15 also does not shake and always sends out transmission pulses at the correct position. Stable records can be obtained.

As described above, in the present invention, even if vibration occurs when the belt runs and the contact area between the belt and the pulley moves or is twisted, the adjustment means provided on the guide rail allows the belt to be adjusted. Since the sliding plate is pressed with a predetermined pressing force, the scanning line drawn by the recording pen can be drawn in a straight line without meandering. Moreover, in this invention, since the recording pen is mounted on the pen holder, even if the recording device vibrates, the recording pen is not affected by the vibration, so the contact pressure between the recording pen and the recording paper is kept constant. can be kept. Therefore, information can be accurately recorded on recording paper. Further, according to the present invention, since the magnetic holder is provided on the side substantially opposite to the pen holder, the deflection of the belt can also be controlled.
Therefore, there is also the effect that movement of only one side of the contact portion between the belt and the pulley can be prevented.

[Brief explanation of drawings]

FIG. 1 is a sketch showing the configuration of the main parts of a belt-driven recorder according to the present invention. FIG. 2 is a sectional view taken along line A-A' in FIG. 1, 2...Pulley, 3...Belt, 4,5...
...Guide rail, 6...Pen holder, 7...
Recording pen, 8...Magnetic holder, 9,1
0...Sliding plate, 11...Pedestal, 12...Motor, 13...Recording paper, 14...Mounting plate, 15...
Magnet, 16...Signal detection sensor, 17,
18...adjustment screw.

Claims (1)

[Claims for Utility Model Registration] A belt stretched around a pulley, a pen holder fixed to the outer surface of the belt, and recording paper attached to the pen holder and moving in a direction perpendicular to the belt. The recording pen includes a recording pen, a magnetic holder formed in the same shape as the pen holder and provided on a substantially opposing side, and a guide rail disposed along the belt, the pen holder and the magnetic holder , one end is formed by bending into an L-shape, and a sliding plate is disposed at each bent portion of the end so as to be in contact with, slide on, and hold the inner surface of the belt, A belt-driven type, characterized in that the other end is formed in a U-shape, and the end is configured such that the belt pressing force against the sliding plate can be adjusted by a pressing force applying adjustment means provided on the guide rail. Recorder.