JPH02276664A - Inner cooling mechanism of printer - Google Patents

Abstract

PURPOSE:To reduce the number of parts and to simplify software control by rotating a fan unidirectionally through a lateral feed motor rotatable bidirectionally. CONSTITUTION:A bevel gear 3 is secured to the shaft of a lateral feed motor 1. A bevel gear 4 having rotary shaft perpendicular to that of the gear 3 is coupled with the bevel gear 3 in order to change the direction of motion. Rotary direction is reversed sequentially and bidirectionally just like the lateral feed motor 1 for reciprocating a carrier horizontally. Bidirectional rotation of the bevel gears 3, 4 is converted through a group of planetary gears 5 into undirectional rotary motion. A fan 6 is secured to the output shaft of the planetary gear group 5 in order to cool the interior of printer.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an internal cooling mechanism for a printer, and more particularly to an internal cooling mechanism for a printer that cools the inside of the printer using a transverse feed motor that rotates in both directions as power.

[Prior Art] Conventionally, the cooling mechanism of this type of printer has been an air cooling type.
Equipped with a fan and fan motor.

This fan motor was a separate motor from the transverse feed motor that horizontally reciprocated the carrier on which the print head was mounted.
The control circuitry, gables, and connectors were also separate from those of the traverse motor that caused the carrier to reciprocate horizontally.

[Problems to be Solved by the Invention] In the internal cooling mechanism of the conventional printer described above, a fan motor separate from the horizontal feed motor is used to prevent horizontal reciprocation of the carrier on which the print head is mounted. The power supply, control circuit, connector, and cable for this are also required separately from those for the transverse feed motor that horizontally reciprocates the carrier, which has the drawback of increasing the overall parts cost.

Also, 1lilH! by software! ft also has the drawback that the horizontal reciprocating motion of the carrier and the rotational drive of the fan must be controlled separately, resulting in an increase in design man-hours and program capacity.

[Means for Solving Problems] An object of the present invention is to solve the above-mentioned problems of the prior art, to reduce the number of parts, and to provide an internal cooling system for printers that can be easily controlled by software. It is to provide.

The present invention provides a serial printer in which a print head is mounted on a carrier and a horizontal feed motor is used to horizontally reciprocate the carrier while printing along printing lines. A bevel gear mounted on the top, a planetary gear group that engages with the bevel gear and transmits bidirectional rotational motion to the output shaft shaft as unidirectional rotational motion, and an output shaft that performs unidirectional rotational motion. It has a fan mounted on a shaft, and is characterized in that the fan rotates only in one direction by being powered by a transverse feed motor that rotates in both directions.

[Example] Next, an internal cooling mechanism of a printer according to the present invention will be described with reference to the drawings.

FIG. 1 is a side view of an embodiment of an internal cooling mechanism of a printer according to the present invention.

A bevel gear 3 is fixed to the shaft of the traverse motor 1. In order to change the direction of movement, a bevel gear 4 is connected to the bevel gear 3, the axis of rotation of which is perpendicular to the axis of rotation of the gear 3. The rotation direction up to this point is sequentially reversed in either direction or both directions, similar to the transverse feed motor 1 that horizontally reciprocates the carrier (not shown).

Bidirectional rotation of bevel gear 3 and bevel gear 4 is converted into unidirectional rotational motion by planetary gear #5. A fan 6 is fixed to the output shaft of planetary gear #5, which cools the inside of the printer.

FIG. 2 shows the planetary gear group 5. Gears 12 and 15 are
It is pivotally connected to a swingable lever 16 that has the same rotation axis as the gear 11. For example, when the gear 11 rotates clockwise, the gear 12 rotates counterclockwise, the gear 13 rotates clockwise, and the gear 14 rotates counterclockwise. When the gear 11 rotates counterclockwise, the gear 12 separates from the gear 13 and the gear 15 is connected to the gear 14 instead, so that the gear 15 rotates clockwise and the gear 14 rotates counterclockwise. In other words,
Regardless of the direction of rotation of gear 11, gear 14 always rotates counterclockwise.

[Effects of the Invention] As explained above, the present invention has a bevel gear mounted on the lateral feed motor shaft and a bevel gear that engages with the bevel gear to transmit bidirectional rotational motion to the output shaft shaft as unidirectional rotational motion. 1. A planetary gear group, and a fan mounted on an output shaft that rotates in one direction. Since the power of the lateral feed motor is used to cool the inside of the printer, there is no need for separate fan motors, power supplies, control circuits, cables, and connectors, which is required in the past, making it possible to keep component costs low. Become. In addition, since there is no need to design drive software, design man-hours are reduced.
This has the effect of reducing program capacity.

[Brief explanation of drawings]

FIG. 1 is a side view of an embodiment of an internal cooling mechanism of a printer according to the present invention. FIG. 2 is a diagram showing the planetary gear group of FIG. 1 in detail. 1...Transverse feed motor 2...Belt 4...
・Bevel gear 5...Planetary gear group 6...Fan 5...Gear 6...Lever

Claims (1)

[Scope of Claims] In a serial printer in which a print head is mounted on a carrier and performs printing operations along printing lines while reciprocating the carrier horizontally by a lateral feed motor, the printer is mounted on the lateral feed motor shaft. a bevel gear, a planetary gear group that engages with the bevel gear and transmits bidirectional rotational motion to the output shaft shaft as unidirectional rotational motion; and a planetary gear group mounted on the output shaft shaft that performs unidirectional rotational motion. 1. An internal cooling mechanism for a printer, characterized in that the fan rotates in only one direction by being powered by a transverse feed motor that rotates in both directions.