JPH04124694U - pencil for protuta - Google Patents

Abstract

(57) [Summary] [Purpose] To ensure that the next lead 6 follows in a plotter pencil. [Structure] The chuck 1 is connected to the chuck holder 4. This chuck 1 is urged backward in the longitudinal direction by a chuck spring 5. The rear spring 17 urges the core tank 16 longitudinally rearward. The chuck holder 4 and the lead tank 16 are appropriately spaced apart and configured so that they can come into contact with each other. Further, at least one of the abutting portions of the chuck holder and the core tank is formed into a tapered surface.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention is constructed so that the protruding position of the wick tank from the main body does not change, and A plotter pen designed to ensure that the spare lead in the tank is guided into the chuck. Regarding Sill.

0002

[Conventional technology]

In recent years, pencils for plotters have been developed in such a way that small diameter leads can be used and the next lead can follow. This is a so-called knock-type system in which the leads are drawn out one by one by moving the chuck forward. Pencils that utilize the mechanism of mechanical pencils have come into use. Moreover, chi The amount of protrusion of the lead tank from the main body does not change depending on whether or not the lead is held by the jack. In addition, the chuck holder and the lead tank are appropriately spaced apart and configured so that they can come into contact with each other. Ta.

0003

[Problem that the idea aims to solve]

However, the above method introduces the spare wicks in the wick tank into the chuck one by one. In addition, the opening hole at the front end of the wick tank was configured to have a small diameter so that two wicks could not pass through it. subordinate If the center of the inner hole of the chuck and the opening hole of the core tank are misaligned, the chuck will be removed from the core tank. The next lead guided into the chuck contacts the inner diameter of the chuck with the opening hole of the lead tank, and the chuck There was a fear of not being able to lead within. In particular, the plotter automatically adjusts the core. For plotter pencils that follow the lead, this poor lead tracking may cause the drawing to be interrupted. This was a very serious problem.

0004

[Means to solve the problem]

This invention uses a chuck that is biased backward in the longitudinal direction by a chuck spring. The chuck holder is connected to the chuck holder and the rear spring allows the chuck holder to be The core tank biased rearward is appropriately spaced apart and configured to be able to come into contact with each other. Furthermore Shape at least one of the abutting parts of the jack holder and the core tank into a tapered surface. When the chuck holder and lead tank come into contact, the inner hole of the chuck and the opening of the lead tank This ensures that the centers of the holes are aligned. This allows the core tank to come into contact with the chuck holder and expand the chuck. It also ensures that the next lead that falls through the opening hole of the lead tank is inserted into the inner hole of the chuck. It is.

[0005]

【Example】

FIG. 1 shows an embodiment of the present invention, in which a tightening ring 2 is externally fitted onto the head of a chuck 1. The tightening ring 2 is loosely fitted into the connector 3 so as to be slidable a certain distance in the longitudinal direction. . A chuck holder 4 is fixed to the rear of the chuck 1, and the chuck 1 is normally connected. A chuck spring 5 stretched between the tool 3 and the chuck holder 4 The head of the chuck 1 is pressed against the tightening ring 2 and closed. It holds the core 6. The outer flange 3A of the connector 3 is fixed to the inner shaft 7, and is attached to the front part of the inner shaft 7. A tip 8 is screwed together. Inside the tip 8, a core guide 9 is slidable in the longitudinal direction. A lead holder 10 for holding the lead 6 with appropriate force is built into the lead guide 9. It is. A chuck guide member 11 slides in the longitudinal direction on the front outer side 3B of the connector 3. The front end of the chuck guide member 11 is movably fitted on the outside, and the front end of the chuck guide member 11 has a An engagement hole 11A for regulating the chuck expansion is formed on the opposite side. After core guide 9 The part is placed over the outside of the chuck guide member 11 and connects the rear end of the core guide 9 and the chuck guide member 11. A spring 12 is stretched between the inner member 11 and the outer flange 11B. The sp When the outer stage 9A of the lead guide 9 is brought into contact with the inner stage 8A of the tip 8 by the ring 12, Also, the inner step 11C of the chuck guide member 11 is in contact with the front end of the connector 3. Ru. It should be noted that the elastic force of the spring 12 should be weaker than the lead holding force of the lead holder 10. This is preferable because it prevents the lead guide 9 from moving forward unnecessarily when the pencil for data is raised. Book The body is composed of a front outer shaft 13 and a rear outer shaft 14, and the tip 8 and inner shaft 7 are connected to the front outer shaft 13 and the rear outer shaft 14. It is held between a shaft 13 and a rear outer shaft 14. A spring receiver 15 is attached to the rear outer shaft 14. fixed, and stretched between the spring receiver 15 and the outer flange 16A of the core tank 16. The core tank 16 is urged rearward in the longitudinal direction by the rear spring 17, and the core tank 16 The outer flange 16A is in contact with the inner stage 14A of the rear outer shaft 14. In front of wick tank 16 The end 16B is appropriately spaced apart from the rear end 4A of the chuck holder 4 and configured to be able to come into contact with it. has been done. Moreover, the rear end 4A of the chuck holder 4 and the front end 16B of the core tank 16 is configured with a tapered surface. Although not shown, the chuck holder and core tongue The effect of the present invention can be obtained by configuring one of the abutting parts of the hook to have a tapered surface. It is. Furthermore, the front opening hole 16C of the wick tank 16 is such that only one wick 6 can pass through. It is formed into a diameter and has a funnel-like configuration. There is an appropriate number of spares in the wick tank 16. A wick 6 is stored therein, and a knob 18 is fitted to the rear of the wick tank 16. Core tongue A knocking disc 19 for knocking is fixed to an appropriate position of the knocking disc 16. A pencil for data is configured.

[0006] Therefore, when following the spare core 6 shown in FIG. 2, the front outer shaft 13 is It is fixed to the holding arm 20, and the front part 9B of the core guide 9 is in contact with the stopper 21. After that, the knocking disc 19 is pressed by the knocking part 22 of the plotter to release the chatter. The taper of the front end 16B of the core tank 16 is attached to the tapered surface of the rear end 4A of the dock holder 4. The surfaces are brought into contact. Therefore, the inner hole of the chuck 1 and the front opening hole 16C of the core tank 16 The centers of the spare wick 6 are aligned and the spare wick 6 is inserted into the channel expanded from the front opening hole 16C of the wick tank 16. It falls into the inner hole of the rack 1 and is reliably followed. Moreover, at this time, the tip of the core guide 9 The tapered surface 11D of the chuck guide member 11 is brought into contact with the tapered surface 9C, and the core holder Since the centers of the inner hole of the driver 10 and the opening hole 11E of the chuck guide member 11 are aligned, , the lead 6 that followed the shortened remaining lead 23 is securely abutted, and the lead 6 that followed The remaining core 23 is discharged by being pushed further.

[0007]

[Effect of the idea]

The plotter pencil of the present invention as explained above has the ability to connect the inner hole of the chuck to the core when tracking the core. The front opening hole of the tank is aligned and the next core can be reliably followed into the chuck. It is something that Therefore, during automatic drawing by the plotter, drawing may be interrupted due to defective core tracking. This allows efficient drawing without interruption.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a plotter pencil according to the present invention.

FIG. 2 is a sectional view showing the lead tracking state of the plotter pencil of the present invention.

[Explanation of symbols]

1 chuck 4 Chuck holder 5 Chuck spring 6 cores 16 wick tank 17 Rear spring

Claims (1)

[Scope of utility model registration request] 1. A plotter pencil in which a lead is paid out or the next lead is followed by the advancement of a chuck, in which a chuck holder is connected to the chuck that is urged backward in the longitudinal direction by a chuck spring, and the chuck holder and the rear spring are connected to the chuck. For a plotter, the core tank, which is urged backward in the longitudinal direction by the chuck holder, is appropriately spaced apart and can be brought into contact with each other, and at least one of the abutting portions of the chuck holder and the core tank is made into a tapered surface. pencil.