JP2542419Y2 - Pencil for plotter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a pencil for a plotter in which a pressing member is configured so that a protruding position from a main body does not change.

[Conventional technology]

In recent years, a pencil using a so-called knock type mechanical pencil mechanism that sequentially advances the lead by moving the chuck forward from the point that a small diameter lead can be used and the point that the next lead can follow is used as a pencil for plotters. It has become.

[Problems to be solved by the invention]

However, in the case of using the knock mechanical pencil as it is, the chuck and the lead tank are fixed, and this lead tank is used as a pressing member, so when the lead is held by the chuck, the pressing member consisting of the lead tank protrudes. When the core is not held by the chuck, the size of the pressing member becomes longer and the position of the pressing member is not constant.

If the projecting position of the pressing member varies, when the plotter pencil is stored in the pen station, the pressing member may come into contact with the knocking member of the pen station and cannot be reliably stored in the storing position.

As a result, there arises a problem that the residual core cannot be discharged when the pen station is stored, and the pencil for the plotter cannot be replaced.

Accordingly, an object of the present invention is to provide a pencil for a plotter in which a pressing member protruding from a main body is located at the same protruding position regardless of whether or not a center is held by a chuck.

[Means for solving the problem]

The pencil for a plotter according to the present invention is configured such that the chuck and the pressing member are appropriately separated from each other and can be abutted directly or via other components. Further, the pressing member is urged rearward in the longitudinal direction by a rear spring.

Due to this, the projecting position of the pressing member from the main body held by the pen station or the drawing head is
It does not change regardless of whether or not the core is held by the chuck.
The storage in the pen station can be performed reliably.

〔Example〕

FIG. 1 shows a first embodiment of the present invention, in which a clamping ring 2 is externally fitted to the head of a chuck 1, and the clamping ring 2 is slidable in a connecting tool 3 in a longitudinal direction by a predetermined distance. It is loosely fitted. A chuck holder 4 is fixed to a rear portion of the chuck 1, and the chuck 1 is normally biased rearward in the longitudinal direction by a chuck spring 5 stretched between the connecting tool 3 and the chuck holder 4, and a head of the chuck 1 is fastened. The core 6 is closed by being pressed against the ring 2. An outer flange 3A of the connecting tool 3 is fixed to the inner shaft 7, and a tip 8 is screwed to a front portion of the inner shaft 7. A core guide 9 is slidably housed in the tip 8 in the longitudinal direction, and a core holder 10 for holding the core 6 with an appropriate force is built in the core guide 9. A chuck guide member 11 is externally slidably fitted to the outside of the front part of the connecting member 3 in a longitudinal direction. Hole 11
A is formed. The rear portion of the core guide 9 is placed outside the chuck guide member 11, and a spring 12 is stretched between the rear end of the core guide 9 and the outer flange 11B of the chuck guide member 11. The outer step 9A of the core guide 9 is brought into contact with the inner step 8A of the tip 8 by the spring 12, and the inner step 11C of the chuck guide member 11 is brought into contact with the front end of the connector 3. It is preferable that the elastic force of the spring 12 be weaker than the core holding force of the core holder 10 because unnecessary advance of the core guide 9 can be prevented when the plotter pencil is raised. The main body is constituted by a front outer shaft 13 and a rear outer shaft 14, and the tip 8 and the inner shaft 7 are held between the front outer shaft 13 and the rear outer shaft 14. A spring support 15 is fixed to the rear outer shaft 14, and the spring support 15 is
After being stretched between 15 and the outer flange 16A of the pressing member 16, the pressing member 16 is urged rearward in the longitudinal direction by a spring 17, and the rear portion of the pressing member 16 projects from the rear end of the rear outer shaft 14. The front part of the pressing member 16 is built in the rear outer shaft 14, and the outer flange 16 </ b> A of the pressing member 16 is in contact with the inner step 14 </ b> A of the rear outer shaft 14. The front end 16B of the pressing member 16 is appropriately separated from the rear end of the chuck holder 4, and the front portion of the pressing member 16 is formed in a funnel shape through which only one core 6 can pass. Further, an appropriate number of spare cores 18 are accommodated in the pressing member 16, and a knob 19 is fitted to a rear portion of the pressing member 16. A knocking disk 20 is fixed at an appropriate position of the pressing member 16 for knocking to form a plotter pencil.

Therefore, irrespective of whether or not the chuck holds the core,
The projecting position of the pressing member projecting from the rear outer shaft does not change. As a result, as shown in FIG. 2, when the plotter pencil is stored in the pen station 21, the knocking disc 20 and the knock member 22 are exactly aligned and securely stored.

In this state, when ejecting the residual core of the plotter pencil, the knock member 22 is slid up and down to press the knocking disc 20, and the chuck 1 advances and the residual core is moved in the same manner as the conventional knock type mechanical pencil. Is emitted.

As shown in FIG. 3, it is also possible to insert the knocking disc 20 between the knocking members 122 and to store the plotter pencil in the pen station 121. In this case, the pressing member 16 is more securely fixed. Becomes

Further, as shown in FIG. 4, the knock member 222 may be configured to press the knob 19 provided at the rear part of the pressing member 16 to discharge the residual core.

In addition, although the above embodiments all store the spare core in the pressing member, the present invention is not limited to the above embodiment,
Equipped with a wick tank for storing spare wicks on the pen station side, which is conventionally known, when ejecting residual wicks and following the next wick, drop one spare wick in the wick tank and move the knock member up and down. A mechanism for repeatedly moving the pressing member forward can also be used. In this case, no spare core is stored in the pressing member of the plotter pencil.

Also, the chuck and chuck holder are composed of one part,
The chuck and the core tank can be appropriately separated from each other.

[Effect of the invention]

According to the present invention, the pressing member protruding from the main body always has the same protruding position regardless of the presence or absence of the core being held by the chuck, and the plotter pencil can be securely stored in the pen station. Therefore, it is possible to solve the above-mentioned various troubles and to reliably discharge the residual core or replace the pencil for the plotter.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a plotter pencil according to the present invention, FIG. 2 is a partial sectional view showing a pen station for storing the plotter pencil according to the present invention, and FIGS. 3 and 4 are respectively used for the plotter pencil according to the present invention. It is a front view showing the pen station which stores a pencil. 1: chuck 5: chuck spring 6: core 16: pressing member 17: rear spring 18: spare core

Claims (1)

(57) [Scope of request for utility model registration] A main body comprising a front outer shaft and a rear outer shaft;
In a plotter pencil for knocking out a pressing member protruding from a rear end of a rear outer shaft to advance a chuck to feed out a lead or to follow a spare lead, a chuck spring biases the chuck rearward in the longitudinal direction, and the front part is moved forward. The rear spring urges the pressing member incorporated in the rear outer shaft in the longitudinal direction rearward by the rear spring, abuts the outer flange of the pressing member against the inner stage of the rear outer shaft, and appropriately separates the chuck and the pressing member. By being configured to be able to abut directly or via another component, the projecting position of the pressing member projecting from the rear outer shaft does not change regardless of the presence or absence of the centering by the chuck. Pencil for plotter.