JPH0143606Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application This invention relates to a recorder that records underwater detection signals on recording paper via a traveling recording pen, and particularly relates to the structure of the driving portion of the recording pen.

(b) Prior art A mechanism that uses an endless belt that rotates between pulleys placed a certain distance apart, and reciprocates a sliding table placed close to and parallel to the rotation path at a constant speed. is already known (mechanical design "Mechanism for reciprocating long distances at constant velocity" p. 84,
VoL23, No. 5, 1979). A structure of a recording pen portion of an underwater detection device that uses such a mechanism to record underwater detection signals on recording paper via a recording pen during both reciprocating periods, thereby increasing recording density. has been proposed by the applicant (Japanese Unexamined Patent Publication No. 57-64182).

(c) Problems to be solved by the invention However, recording pens are generally tilted slightly in the opposite direction to the direction of travel, primarily to obtain a stable recorded image and to prevent damage to the recording paper. Because of this, the recording pen tilts in the traveling direction during the return trip, and the conventional recording pen structure cannot be used as is.

(d) Means and action for solving the problem This invention was made in view of the above.In a recording pen that travels back and forth, a mount having the recording pen on one end side is installed on each end of the recording pen during the outward and return trips. It has a rotating shaft that rotates within the range of the tilt angle, and furthermore, just before the recording pen changes its running direction, the head on the other end of the mount collides with the reversing material, causing the pen's tilt direction to change. This paper proposes a structure of a driving part of a recording pen that is designed to be inverted.

(e) Embodiment Figure 1 is a perspective view showing an embodiment of this invention.
Reference numeral 1 denotes an endless belt whose other end is stretched over a pulley 2 (not shown), and a fourth pin attachment having a drive pin 3 is disposed at that location.

Reference numerals 5 and 5 designate parallel guide rails that are passed through the sliding holes of the sliding table 6, respectively. Reference numeral 7 denotes a drive hole formed in the slide table 8 provided on the lower side of the slide table 6 to be long in a direction perpendicular to the sliding direction, so that the drive pin 3 comes into contact with the inside thereof. (The two are drawn separately in the drawing for drawing purposes.) Therefore, as the endless belt 1 rotates, the slide table 6 is caused to reciprocate between the pulleys 2.

Reference numeral 9 denotes a base formed integrally with the sliding table 6, for example, on the upper part of the sliding table 6, and a shaft 10 is rotatably attached approximately to the center of the side surface of the base. This axis 10
has a pen mount 12 with a recording pen 11 at its lower end.
are connected to each other, so that the pen mount 12 can rotate around the shaft 10.
Note that the part for supplying electricity to the recording pen 11 is omitted.

Now, FIG. 2 is a side (partially sectional) view of the device shown in FIG. 1. In the figure, 13,
Reference numeral 14 denotes a locking pin provided on the side surface of the base 9, which functions to restrict the rotation of the pen mount 12 around the shaft 10 and to maintain the inclination of the recording pen 11 at a predetermined angle during forward and return travel. do.

15 is pulley 2 (and pulley not shown)
An inverter that also has a shock absorbing property and consists of a fixing member 16 placed close to the top of the fixing member 16, and a shaft 19 movably penetrated by an elastic material such as a spring 18 into a hole 17 formed at a suitable position in the fixing member 16. Department.

When the recording pen 11 attached to the lower end of the pen mount 12 passes through the recording paper 20 and approaches the position of the pulley 2, the upper end head of the pen mount 12 hits the shaft 19 of the reversing section 15. Then, when the pen mount 12 further moves toward the pulley 2 and reaches the end position, the shaft 19 presses the upper end head of the pen mount 12 in the direction of arrow A by reaction.
The pen mount 12 is rotated as indicated by 12', and the direction of inclination of the recording pen 11 is reversed.

Reference numeral 21 denotes a spring body fixed by fasteners 22 and 23 so that a force is always exerted in the inner direction of closing. The stopper 22 is provided at a suitable position on the side surface of the pen mount 12 on the upper end side of the shaft 10, while the stopper 23 is provided at a suitable position on the side surface of the base 9 below the shaft 10, for example, the vertical line l.

Here, the direction of each rotation moment of the pen mounts 12 and 12' due to the spring body 21 in each state is reversed depending on whether the stop 22 is positioned on the left or right side of the line 1. That is, when the stopper 22 is on the right side of the line 1 in FIG. direction, and the inclination is maintained by the locking pin 13 (pen mount 12').

In this manner, when the inclination direction of the pen attachment 12 is reversed by the reversing portion 15, the inclination is maintained by the spring body 21 until the next reversal (at the other pulley position) is performed. There is.

A toggle switch or a snap switch is known as a device that maintains the tilt using this method. Further, as the spring body 21, one that exerts a force so as to open outward can also be used. In this case, the stop 23 is in the opposite position relative to the shaft 10.

(f) Effect of the device As explained above, according to this device, the inclination direction of the recording pen is reversed to the appropriate direction every time the recording pen changes its traveling direction between the forward and backward travels, and the spring body 21 allows the inclination direction to be maintained, which not only stabilizes recording but also prevents damage to the recording paper and recording pen due to snagging with the recording paper.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of this invention, and FIG. 2 is a partially sectional view seen from the side. 10...Shaft, 12...Pen mount, 13, 14
... Locking pin, 15 ... Reversing part, 21 ... Spring body, 22, 23 ... Stopper.

Claims (1)

[Claims for Utility Model Registration] A rotating endless belt stretched between two pulleys is driven along a guide rail arranged parallel to and close to the endless belt by a driving tool installed at one location of the endless belt. A base part that slides back and forth; a pen mount that is rotatably provided with respect to the base part and has a recording pen on the lower side and a collision head on the upper side; A locking device for restricting each of the recording pens to within an appropriate inclination angle range on the outward and return trips; a retaining device using a spring for maintaining each of the recording pens in a locked state; A recording pen part structure comprising a reversing tool disposed at a position where the head hits when the base part is reversed in the forward and backward directions.