JPH023917Y2 - - Google Patents

Description

[Detailed description of the invention] This invention has a sensor plate equipped with a magnetically sensitive element on the carriage of a drafting device, and a magnetically generating cursor that is magnetically coupled through a glass plate, and follows the movement of this magnetically generating cursor. The present invention relates to an improvement in the sensor plate of an interactive drafting device, in which the carriage is configured to move.

Figures 1, 2, and 3 are explanatory diagrams showing an embodiment of the present invention, in which Figure 1 is an overall configuration diagram, Figure 2 is a sectional view of main parts, and Figure 3 is a diagram showing an embodiment of the present invention. FIG. 3 is a layout diagram of related leaf springs.

In FIGS. 1, 2, and 3, 1 is the main body of the interactive drafting device, 2 is a glass plate serving as a document placement surface, and 3 is a hand holding a document placed on the glass plate 2. The magnetism generating cursor 31 is a magnetism generating section. Reference numeral 4 denotes a recording surface of the drawing device, and a recording paper is placed on this recording surface 4.
A carriage 5 has a recording pen 51 at one end thereof, and is supported on the recording surface 4 so as to be freely driven by a carriage drive mechanism 6. A sensor plate 7 is provided on the upper surface of the carriage 5.

The sensor plate 7 in this embodiment includes a sensor plate support member 71 that is screwed to the carriage 5, and a sensor plate support member 71 that is screwed to the carriage 5.
The sensor plate support plate 73 is coupled to the sensor plate support plate 73 via a plate spring 72. Further, a sensor plate 7 is formed on the sensor plate support plate. The sensor plate 7 is provided with four magnetic detectors 7a, 7b, 7c and 7d.
Further, a display 74 is formed in the center of the area surrounded by these magnetic detectors 7a, 7b, 7c and 7d. The display 74 consists of a red lamp and a white lamp, and indicates the state of magnetic coupling with the above-mentioned magnetism generating cursor. Here, the leaf spring 72 supporting the sensor support plate 73 is the third spring in this embodiment.
As shown in the figure, six leaf springs 72 are used, and the arrangement of these leaf springs 72 is configured to compensate for the directionality of each leaf spring 72.

Next, the operation of the device of the present invention having such a configuration will be explained.

Please refer to FIG. The magnetism generating cursor 3 is brought into close contact with the glass plate 2, and the magnetism generating body 31 generates magnetism. This generated magnetism is
It is differentially detected by three magnetic detectors 7a, 7b, 7c, and 7d. An internal electrical circuit (not shown) is arranged so that these magnetic detectors 7a, 7b, 7c, 7d detect equal magnetism (i.e. when the carriage 5
is the position directly below the magnetic generating body 31).
is configured to move. Therefore, for example, by placing a document with a rough drawing on the glass plate 2 and tracing it with the magnetic cursor 3, a formal drawing can be produced. In addition, at this time, the magnetic detector 7
When a, 7b, 7c, and 7d are in the magnetic detection state, the indicator 74 lights up a red lamp, and when equal magnetism is detected (that is, the carriage 5 moves directly under the magnetism generation cursor 3), the white lamp lights up. It is configured like this.

As explained above, according to the present invention, the following effects can be obtained.

(1) In order to support the sensor plate 7, a plurality of leaf springs are used, and these leaf springs are arranged so as to compensate for their respective directions.
When the sensor plate 7 slides in contact with the back surface of the glass plate 2, the sensor plate is prevented from twisting and slides smoothly, compared to conventional devices that use coil springs, allowing accurate positioning of the carriage 5. This has the advantage of being adjustable.

(2) Therefore, there is no need to provide a guide member for the sensor plate, which was necessary in the conventional device, and there is an advantage that the number of parts can be reduced.

[Brief explanation of the drawing]

FIGS. 1, 2, and 3 are explanatory diagrams showing an embodiment of the present invention. 1...Interactive drafting device, 2...Glass plate, 3...
...magnetic generation cursor, 4...recording surface, 5...carriage, 6...carriage drive mechanism, 7...sensor plate.

Claims (1)

[Scope of utility model registration request] A carriage of the drafting device has a sensor plate provided with a magnetically sensitive element and a magnetism generating cursor magnetically coupled through a glass plate, and the carriage is configured to move following the movement of the magnetism generating cursor. In the interactive drawing device, the sensor plate has an upper surface covered with a synthetic resin having low frictional resistance and has a sensor plate support plate, and the sensor plate support plate is connected to the upper surface of the carriage and a plurality of plates. An interactive drawing device characterized in that the plurality of leaf springs are connected by springs and are arranged so as to compensate for the directionality of each leaf spring.