JPS6227427Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pen cartridge for a recording pen suitable for measuring instruments.

Conventionally, this type of recording pen has been used in Figures 1 and 2.
As shown in the figure, approximately the center of the pen cartridge 2 with the pen tip 1 attached to the tip is inserted into the pen arm 3.
It is configured to be held by a bent portion 3a formed at the tip. This pen arm 3 can be attached to a recording device so as to be movable according to the output of a recording device of a measuring instrument (not shown), or it can be fixed to a recording paper that moves according to the output of the recording device and attached to the recording device. installed.

Therefore, since the length L of the bent portion 3a of the conventional recording pen is short, the bent portion 3a is manufactured to hold the pen cartridge 2 and allow the pen cartridge 2 to be smoothly attached to and removed from the pen arm 3. It is difficult to do so, and the relative position between the pen arm 3 and the pen cartridge cartridge 2 tends to be distorted.

The present invention solves the above-mentioned drawbacks, and is designed to (a) be securely held on the pen arm, (b) be easily attached to and removed from the pen arm, and (c) prevent the relative position of the pen arm from becoming out of alignment. Aims to provide pen cartridges for pens.

The present invention relates to a pen cartridge of a recording pen which is held in a pen arm equipped with a spring plate of a recording device and has a pen tip in contact with recording paper. The present invention is characterized in that a wide groove is provided in which the spring plate presses against the spring plate when held, and a protrusion is provided approximately in the center of the groove, intersecting the groove at a substantially right angle and engaging the spring plate.

A detailed explanation will be given below based on the drawings of the embodiment.

FIG. 3 is an assembled perspective view of a recording pen according to an embodiment of the present invention, and FIG. 4 is an external perspective view of the same. 3 and 4, a wide groove 5a is formed in the upper surface of the pen cartridge 5 in the longitudinal direction of the pen cartridge 5. As shown in FIGS. Further, on the top surface of the pen cartridge cartridge 5, there is a groove 5a in the center of the groove 5a.
A protrusion 5b is provided which is orthogonal to the ridge 5b. Further, a pen tip 1 is attached to the tip of the lower surface of the pen cartridge 5.

Further, a spring plate 7 for pressing against the upper surface of the pen cartridge 5 is fixed to the pen arm 6 at its base end by caulking with a rivet 8. The width of this spring plate 7 is slightly narrower than the width of the groove 5a of the pen cartridge 5, and the spring plate 7 is slidably fitted into this groove 5a. The tip of the spring plate 7 facilitates insertion into the pen cartridge cartridge 5, and the groove 5
It is curved upward to smoothen the sliding movement with a. Further, the height H of the tip of the spring plate 7 from the pen arm 6 is slightly smaller than the thickness D of the pen cartridge 5. Further, near the tip of the spring plate 7, a grooved line 7a is formed to engage with the protruding line 5b. Furthermore, a recess 6a into which the pen tip 1 is fitted is provided at the tip of the pen arm 6.

With this configuration, in order to attach the pen cartridge cartridge 5 to the pen arm 6, as shown in FIG.
Align the groove 5a of the pen cartridge 5 with the direction of the pen arm 6 and spring plate 7, and then remove the pen cartridge 5.
When inserted, the tip of the spring plate 7 expands by the thickness of the pen cartridge 5, and the spring plate 7 moves while fitting into the groove 5a. At this time, the spring plate 7 generates an elastic force by the amount of expansion and presses against the pen cartridge 5. If you push the pen cartridge 5 further, the fourth
As shown in the figure, the concave strip 7a of the spring plate 7 is engaged with the convex strip 5b of the pen cartridge cartridge 5, and at the same time, the concave portion 6a of the pen arm 6 is fitted into the pen tip 1, and the mounting operation is completed.

As a result, the pen cartridge cartridge 5 is held securely and in a fixed position relative to the pen arm.

To remove the pen cartridge cartridge 5 from the pen arm 6, pull out the pen cartridge cartridge 5 in the opposite procedure to the above, the grooved line 7a will come off from the protruding line 5b, and the spring plate 7 will move in the opposite direction along the groove 5a. can be moved and removed easily.

In addition, in the above example, an example was shown in which one pair of each of the protruding stripes and the concave stripes were provided, but a plurality of pairs may be provided.
Further, although an example has been shown in which the base end of the spring plate is fixed with a rivet, other fixing means such as welding may be used.

As described above, according to the present invention, by providing the pen cartridge with a groove in which the spring plate can slide and a protrusion that engages with the spring plate, (a) the elastic force of the spring plate of the pen arm is reduced; (b) It can be attached to and removed from the pen arm in a short time with little effort, and (c) By matching the width of the spring plate and the width of the groove and locking the concave strip to the convex strip, it can be attached to the pen arm. This provides an excellent pen cartridge for a recording pen in which the relative position of the pen is always at a predetermined position.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the upper surface of a conventional recording pen. FIG. 2 is a perspective view of the bottom appearance. FIG. 3 is an assembled perspective view of a recording pen according to an embodiment of the present invention. FIG. 4 is also a perspective view of the exterior. 1... Pen tip, 2... Pen cartridge, 3...
...Pen arm, 3a...Bending portion, 5...Pen cartridge cartridge, 5a...Groove, 5b...Convex strip, 6...Pen arm, 6a...Concave portion, 7...Spring plate, 7a...
...Concave stripes, 8...Rivets.

Claims (1)

[Scope of utility model registration request] In a pen cartridge of a recording pen that is held on a pen arm equipped with a spring plate of a recording device and has a pen tip that contacts recording paper, the pen cartridge is formed in the longitudinal direction of the cartridge surface and when this cartridge is held on the pen arm. A recording pen characterized in that a wide groove is provided in pressure contact with the spring plate, and a convex strip is provided at approximately the center of the groove, intersecting the groove at a substantially right angle and engaging with the spring plate. Tori Tsuji.