JPS6343090Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to a type of printer that prints by reciprocating a carrier on which a printing head is mounted.

[Technical background of the invention]

Conventionally, in this type of printer, in order to move the carrier slidably held on a support shaft together with the print head, there is a printer in which a wire wound around the carrier and a motor pulley is fixed to a pair of left and right frames.

[Problems with background technology]

However, when assembling such devices, one end of the wire is fixed while being pulled by hand or on a bench, and the tension of the wire tends to loosen, making assembly difficult.

[Purpose of invention]

This invention has been made in view of these points, and the object is to provide a printer that can be easily assembled by adjusting the tension of the wire for moving the carrier.

[Summary of the idea]

This idea involves winding a wire wound around a motor pulley around a part of the carrier, fixing the ends of this wire to frames on both sides, and pulling the wire as the motor pulley rotates, causing the carrier to reciprocate. During assembly, the wire is wound around a winding shaft provided on one side of the frame to give tension to the wire, and in this state, a presser is screwed to the frame near the winding shaft, and the presser and frame are connected together. The structure is such that the wire is held between the wires, and therefore the tension of the wire can be adjusted well for easy assembly.

[Example of idea]

An embodiment of this invention will be explained based on FIGS. 1 to 4. First, a pair of left and right frames 2 are attached to a base 1. A platen 3 and a support shaft 4 are attached to these frames 2 in parallel. A printing head 5 is attached to these support shafts 4.
A carrier 7 carrying a ribbon cassette 6 and a ribbon cassette 6 is slidably mounted thereon.

A motor (not shown) is mounted on the base 1.
A motor pulley 8 connected to the carrier 7 is attached, and a wire 9 wound around the motor pulley 8 is wound around a roller 10 attached to the frame 2, and both ends of the wire 9 are connected to a roller 10 attached to the carrier 7. It is wound around 11.

One end of the wire 9 is fixed to the frame 2 on one side. Further, a through hole 12 through which the other end of the wire 9 is protected and inserted is formed in the frame 2 on the other side, and a winding shaft 13 through which the wire 9 inserted through the through hole 12 is wound and held. is rotatably mounted. This winding shaft 13 has a mounting hole 14 for mounting the wire 9 and a groove 16 into which a torque driver 15 is fitted. Further, the wire 9 is connected to the frame 2 on the other side between the through hole 12 and the winding shaft 13.
A presser 17 is screwed to press the frame 2 on the other side.

In such a configuration, the torque driver 1
5 rotates the winding shaft 13, and this winding shaft 13
Then, the other end of the wire 9 is wound up to apply tension to the wire 9. Then, when the wire 9 reaches a desired tension state, the rotation of the winding shaft 13 is stopped, and in this state, the wire 9 is pressed against the frame 2 and fixed by a presser 17 attached to the frame 2. Therefore, the wire 9 is maintained under the desired tension without loosening, and the wire 9 can be easily fixed.

As shown in FIG. 5, a winding shaft 20 having a hexagonal head 19 into which the torque wrench 18 is fitted may be used, or the torque wrench itself may be used as the winding shaft (not shown) to impart a certain tension to the wire 9. Is possible. Furthermore, as a means for rotatably holding the winding shaft, a winding shaft 22 having a threaded portion 21 that is screwed into the frame 2 may be provided as shown in FIG. Furthermore, as shown in FIG. 7, a winding shaft 24 having a groove 23 formed therein may be used for winding the wire 9. In this case, the groove 23 can be used to turn a screwdriver or the like.

[Effect of idea]

Since this device is constructed as described above, by rotating the winding shaft to apply tension to the wire and fixing the wire with a presser in this state, the wire can be assembled very easily while preventing the wire from loosening. This has the effect of making it possible.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a perspective view showing the whole, Fig. 2 is a plan view showing the wire route, Fig. 3 is a side view showing an enlarged view of the main part, and Fig. 4 is a vertical sectional side view showing the winding shaft further enlarged. , and FIGS. 5 to 7 are enlarged side views showing modified examples of the winding shaft. 2... Frame, 4... Support shaft, 5... Print head, 7... Carrier, 8... Motor pulley, 9
... wire, 12 ... through hole, 13 ... winding shaft, 1
7... Presser, 20... Winding shaft, 22... Winding shaft, 24... Winding shaft.

Claims (1)

[Scope of utility model registration request] A pair of left and right frames are provided to hold both ends of a support shaft on which a carrier holding a print head is slidably held, and one end of a wire wound around a motor pulley and a part of the carrier is attached to one end of the support shaft. A through hole for passing the other end of the wire is formed in the frame on the other side, and a winding shaft for winding and holding the wire inserted through the through hole is rotatably attached to the frame, and the winding shaft is rotatably attached to the other side frame. A printer characterized in that a presser for pressing the wire against the frame is screwed to the frame between the through hole and the winding shaft.