JPH0436317Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a device for detachably attaching a writing instrument to a carriage in an automatic drawing machine.

Conventional technology An automatic drawing machine attaches a writing instrument to a carriage that moves in a predetermined direction, and moves the writing instrument with the carriage to draw.When drawing lines of different thicknesses, the writing instrument is replaced, so the writing instrument is It is attached to the carriage so that it can be easily attached and detached.

For example, as shown in Japanese Patent Application Laid-open No. 60-67200,
A device is known in which a support groove is formed in a holder, and a support plate integrally formed with the writing instrument is fitted into the support groove to attach the writing instrument to the holder.

Problems to be Solved by the Invention With such a mounting device, the writing instrument can be attached to and removed from the holder by moving the writing instrument up and down relative to the holder. Because of this structure, when drawing by applying pressure to the writing instrument, the writing instrument may rise against the spring, causing the support plate to come off the support groove and the writing instrument to come off the holder.

Therefore, the object of the present invention is to provide a writing instrument mounting device for an automatic drafting machine that allows the writing instrument to be easily attached and removed, and also that can reliably prevent the writing instrument from rising when drawing by applying pen pressure. shall be.

Means and Effects for Solving Problems A notch and an upper fitting recess are formed in the upper protruding piece of the holder, a notch and a tapered downward lower fitting hole are formed in the lower protruding piece, and the holder A locking piece is swingably provided on the upper part of the vertical frame of the writing instrument, and is biased and held by a spring so as to slightly protrude into the upper fitting recess, and is sized to allow the main body of the writing instrument to be inserted into the notch,
The main body is formed with a lower mounting flange that fits tightly into the lower fitting hole and an upper mounting flange that fits into the upper fitting recess and locks with the locking piece. At the same time, the writing instrument can be attached to the holder by locking the locking piece to the bottom of the upper mounting flange to prevent it from falling, and the upward force acting on the writing instrument can be transferred between the lower fitting hole and the lower mounting flange. It is designed so that it can be supported by the tightly fitted part.

Embodiment A vertical guide rail 2 is integrally formed on the front surface of the carriage 1 over the entire length in the vertical direction, and a guide 4 is integrally formed on the rear surface of the holder 3, and this guide 4 is slidable on the vertical guide rail 2. The holder 3 is fitted into the carriage 1 and supported so as to be movable up and down along the carriage 1, and the carriage 1 is provided with a mechanism (not shown) for moving the holder 3 up and down.

The holder 3 has a substantially U-shape in which upper and lower protruding pieces 6 and 7 are integrally formed on the upper and lower sides of a vertical frame 5, and the upper protruding piece 6 has a substantially U-shaped notch 8 that opens on the lower surface 6a and the front surface 6b. An upper fitting recess 9 is formed at the bottom of the notch 8, and a small hole 10 is bored through the upper fitting recess 9 to the upper surface 6c.

The lower protruding piece 7 has a substantially U-shaped lower notch 11 that opens on the lower surface 7a and the front surface 7b, and a narrow, substantially U-shaped upper notch 12 that opens on the upper surface 7c and the front surface 7b. A downward flat surface 1 formed continuously from top to bottom
3, a tapered lower fitting recess 14 is formed in this downward flat surface 13, and the lower protruding piece 7 penetrates the upper and lower surfaces 7c, 7a, and has a tapered downward opening in the front surface 7b. It has a lower fitting hole 15.

A locking piece 17 is swingably supported by a pin 18 in a slit-shaped space 16 formed in the middle of the vertical frame 5, and is urged to swing forward by a spring 19 to lock upward. The surface 17a slightly protrudes into the upper fitting recess 9.

The carriage 1 is provided with a stopper 20, and a switch 21 is fixed thereto, with a dog 22 attached to the vertical frame 5 of the holder 3.
It is configured to be turned on and off.

The writing instrument 30 includes a main body 31, a writing instrument 32 protrudes from the lower part of the main body 31, and has an upper mounting flange 33, a lower mounting flange 34, and a pair of intermediate flanges 35, 36, with the lower mounting flange 34 facing downward. It is tapered.

Therefore, in order to attach the writing instrument 30 to the holder 3, as shown in FIG. Move the upper mounting flange 33 and lower mounting flange 3
4 into the notch 8 and the lower notch 11, and then move the carriage 1 forward to attach the upper mounting flange 33.
is opposed to the upper fitting recess 9, and the lower mounting flange 34 is opposed to the lower fitting recess 14.

Then, the holder 3 is lowered to tightly fit the lower mounting flange 34 into the lower fitting recess 14 as shown in FIG.
7a is locked to the lower part of the upper mounting flange 33 to keep it from falling.

Because of this, an upward force acts on the writing instrument 30 when drawing with pen pressure, but the lower mounting flange 34 and the downward lower fitting recess 14,
In other words, since the upward force can be supported by the tightly fitted portion of the downward lower fitting hole 15, the writing instrument 30 will not move upward and will not come off.

In addition, since the downward lower fitting hole 15 and the lower mounting flange 34 are tapered downward,
The writing instrument 30 can be centered and attached.

From FIG. 6 onwards, the operation of exchanging the writing instrument 30 is shown. As shown in FIG.
The main body 31 of 0 is supported.

Then, the carriage 1 is advanced toward the stocker 40 and stopped at a replacement position separated by a predetermined distance.

At this time, the holder 3 rises until it contacts the stopper 20 and the switch 21 is turned off, and the notch 8 and lower notch 11 of the holder 3 are connected to the upper part of the writing instrument 30 supported by the stopper 40.
It is positioned to face the lower mounting flanges 33 and 34.

In this state, move the carriage 1 forward to insert the upper and lower mounting flanges 33 and 34 into the notch 8 and the lower notch 11 as shown in FIG.
As shown in the figure, lower the holder 3 and tightly fit the lower mounting flange 34 into the lower fitting hole 15,
The upward locking surface 17a of the locking piece 17 is locked to the lower part of the upper mounting flange 33 to hold the writing instrument 30.

At this time, the intermediate flange 35 of the main body 31 of the writing instrument 30 is inserted between the pair of upper and lower bifurcated support members 41 and 42, so the writing instrument 30 does not move up and down, and the writing instrument 30 does not move up and down.
2, the switch 21 is turned on, and it can thereby be detected that the writing instrument 30 is held.

When the switch 21 turns ON, the carriage 1 moves backward and the writing instrument 30 is removed from the stocker 40 as shown in FIG. At this time, 30 writing instruments
The main body 31 has a pair of upper and lower bifurcated support members 41, 4.
Since it is just a snap fit to 2,
It can be easily removed by moving the main body 31 laterally.

This completes the work of attaching the writing instrument 30 to the holder 3, and the writing instrument 30 attached to the holder 3
In order to hold the stocker 40, it is sufficient to perform the opposite operation to that described above.

In this way, the writing instrument 30 can be replaced with a simple operation.

Effect of the invention: The lower mounting flange 34 formed on the main body 31 of the writing instrument 30 is tightly fitted into the lower fitting hole 15 of the holder 3, and the upper mounting flange 33 formed on the main body 31 is fitted into the upper fitting recess 9 and engaged. The writing instrument 30 can be attached to the holder 3 by locking the locking surface 17a of the stopper piece 17 to the lower part of the upper mounting flange 33 and holding it so that it does not fall. Since it is tightly fitted into the lower fitting hole 15 of the lower mounting flange 34, the lower mounting flange 34 will not move upwards beyond a predetermined position, and even if an upward force is applied to the writing instrument when drawing by applying pen pressure, the writing instrument 30 will not move. There is no upward movement, the writing instrument does not come off, and the writing instrument 30 can be accurately attached to the holder 3 without wobbling.

Further, the main body 31 of the writing instrument 30 is large enough to be inserted into the notch of the lower protruding piece 7 of the holder 3, the upper mounting flange 33 is large enough to be inserted into the notch 8 of the upper protruding piece 6, and the holder 3 is Since it can move up and down along 1, the writing instrument 30 and the carriage 1
, insert the lower part of the main body 31 of the writing instrument 30 into the notch of the lower protruding piece 7, and insert the upper mounting flange 33 into the notch 8 of the upper protruding piece 6, and in this state, move the holder 3 downward. , the upper mounting flange 33 fits into the upper fitting recess 9, the locking surface 17a of the locking piece 17 engages with the lower part of the upper mounting flange 33, and the lower mounting flange 34 fits into the lower fitting. The writing instrument 30 can be attached to the holder 3 by tightly fitting it into the hole 15 from below, and the writing instrument 30 can be attached to the holder 3 by fitting it tightly into the hole 15 from below.
0 can be removed from holder 3.

Therefore, the writing instrument 30 can be replaced with a simple operation.

[Brief explanation of the drawing]

1 to 5 show a first embodiment of the present invention,
Figure 1 is a sectional view of the writing instrument attached, Figure 2 is a sectional view of the initial state of the writing instrument installed, Figure 3 is a sectional view of the writing instrument removed, and Figures 4 and 5 are its plan views. , a bottom view, and FIGS. 6 to 9 are explanatory diagrams showing the operation of attaching a writing instrument from a stocker to a holder in the order of steps. 1 is a carriage, 3 is a holder, 15 is a lower fitting hole, 17 is a locking piece, 30 is a writing instrument, 31 is a main body, 33 is an upper mounting flange, and 34 is a lower mounting flange.

Claims (1)

[Scope of Claim for Utility Model Registration] In a writing instrument mounting device for an automatic drawing machine, in which a holder 3 is attached to a carriage 1 so as to be movable up and down, and a writing instrument 30 is attached to this holder 3, the holder 3 is moved up and down on a vertical frame 5. The protruding pieces 6 and 7 are integrally formed into a substantially U-shape, and the lower part of the upper protruding piece 6 is formed with a substantially U-shaped notch 8 that is open to the front. An upper fitting recess 9 is formed which is continuous with the part 8, and the lower protruding piece 7 is formed with a substantially U-shaped cutout that opens on the front and upper and lower surfaces, and a downwardly tapered cutout is formed in the lower part of the cutout. A locking piece 17 having an upward locking surface 17a is swingably supported on the upper part of the vertical frame 5, and a spring 1
At 9, the locking surface 17a is swung to a position where it slightly protrudes into the upper fitting recess 9, and the main body 31 of the writing instrument 30 is made large enough to be inserted into the notch of the lower protruding piece 7. An upper mounting flange 33 is provided on the upper part and is large enough to be inserted into the notch 8 of the upper protruding piece 6 and fitted into the upper fitting recess 9, and is tightly fitted into the lower fitting hole 15 at the lower part of the main body 31. a downwardly tapered lower mounting flange 34 is provided, the upper mounting flange 33 is fitted into the upper fitting recess 9, and the lower part of the upper mounting flange 33 is engaged with the locking surface 17a of the locking piece 17; The lower mounting flange 34 is tightly fitted into the lower fitting hole 15 to close the writing instrument 3.
A writing instrument mounting device for an automatic drawing machine, characterized in that a writing instrument 0 is mounted on a holder 3.