JPS60190373A - Carriage - Google Patents

Abstract

PURPOSE:To reduce vibration and noises generated between a guide rail and a slide section of the carriage body due to a reaction of a wire impact type head mounted on the carriage by providing an elastic material therebetween. CONSTITUTION:Elastic materials 26, 27 and 28 are filled between bearing sections 6, 7 and 8 of a carriage 11 and guide rails 15 and 16 and bearings 29, 30 and 31 are press fitted into the outside thereof. An urethane rubber is favorable for the elastic materials 26, 27 and 28.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a carriage, and more particularly, the present invention relates to a carriage, and more particularly, a carriage is mounted with a print head, movably attached to a guide rail,
The present invention relates to a carriage configured to perform printing while moving in parallel along a platen.

[Prior art]

Generally, in a printing device, various components are mounted on a carriage and are moved in parallel along a guide rail (1) 6+ to perform a given function. A conventional example of such a configuration is shown in FIG.

In FIG. 1, the reference numeral 1 indicates a carriage on which a type foil, an ink ribbon, a type hammer, etc. are mounted, although not shown in the figure.

The carriage 1 has bearings 5 on two guide rails 2 and 3.
, 6 and 7, and is moved parallel to the left and right along the guide rails 2 and 3 to print on the recording paper.

In the conventional example of the above configuration, for example, in an impact printer such as a wire dot printer,
During printing, the noise and vibration generated by the printing wire striking the platen are propagated to the printer body through the guide rails 2 and 3 and increase, causing discomfort to the user, etc. There were drawbacks.

Furthermore, in order to correct variations in the parallelism of the guide rails 2 and 3 and to ensure smooth parallel movement of the carriage, there is usually a 0.1
(2) It has the same clearance as a cage. Therefore, due to vibrations when the carriage 1 returns or when printing, the bearing T and the guide rail 2 collide with each other, which also causes noise and vibration.

〔the purpose〕

The present invention has been made to eliminate the above-mentioned conventional drawbacks, and an object of the present invention is to provide a carriage configured to reduce noise and vibration generated between a bearing and a guide rail.

〔Example〕

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

Figures 2 to 5 illustrate an embodiment of the present invention.
In the figure, a carriage 11 is equipped with a wire dot head 12 and prints on recording paper on a platen 14 via an ink ribbon 13.

The carriage 11 is slidably fitted to two guide rails 15 degrees and 16 degrees.

The carriage 11 is installed with tension between the boots IJ 17 and 18, is fixed in the middle of a timing belt 19 having rack teeth at a constant pitch, and moves back and forth along the platen 6 in accordance with printing commands. . Pulley 1
A gear 20 is formed coaxially with the gear 8, and is constantly meshed with a gear 21 fixed to the drive shaft of a motor 22, which is a drive source shown in FIG.

A gear 23 including a one-way clutch is attached coaxially with the gear 21 to the drive shaft of the motor 22, and is constantly engaged with a gear 24 for feeding the ink ribbon 13, causing the gear to rotate and moving the ink ribbon along the platen. to move it in parallel.

In such a configuration, 1. When the motor 22 is rotated counterclockwise in FIG. 1, the carriage 11 moves to the right and the ink ribbon 13 is sent to the left. Further, when the motor 23 is rotated clockwise, the carrier 11 returns to the left, and at the same time, the ink ribbon is sent to the left.

FIG. 5 shows an enlarged perspective view of the carriage part in this embodiment. In this embodiment, the bearings 5, 6.7 and guide rails 2.3 in the carriage of the conventional structure shown in FIG. (,5) are filled with elastic materials 26, 27, 28, and bearings 29, 30, 31 are press-fitted on the outside thereof. If such a structure is used in which an elastic material is filled between the carriage and the bearing, the noise and vibration generated on the keyer ridge will be attenuated by the elastic material parts 26, 27 and 28, and will not be transmitted to the guide rail, so that noise and vibrations generated on the keyer ridge will be attenuated by the elastic material parts 26, 27 and 28, and will not be transmitted to the guide rail. Transmitted noise and vibration are reduced.

Furthermore, since the elastic material parts 26, 27, 28 are relatively easily deformed, variations in the parallelism of the guide rails 15, 16 can be absorbed by the elastic material parts.

Therefore, the clearance between the guide rail 16 and the bearing 31 can be reduced, and the effect of reducing noise and vibration caused by play between the guide rail 16 and the bearing 31 can be obtained.

Note that urethane rubber or the like is used as the elastic material 26, 27, 28.

Further, the present invention provides similar effects not only when there is a shaft that moves parallel to the bearing as in the above embodiments, but also when there is a shaft that rotates with respect to the bearing, for example. Alternatively, if a bearing is used (r ζ ) (4), even if it is used between the part where the bearing is fixed and the bearing, the effect of preventing vibration and noise can be obtained as mentioned above. It will be done.

〔effect〕

As is clear from the above description, according to the present invention, noise and vibration generated on the carriage are transmitted to the outside by using an elastic material between the guide rail and the sliding part of the carriage body. This has the effect of reducing the ratio and further reducing the noise and vibration generated between the bearing and the shaft.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a conventional carriage body and its accompanying bearing, and FIGS. 2 to 5 illustrate an embodiment of the present invention. A plan view of a printer using a carriage, Figure 3 is the second
4 is a side view of FIG. 2, and FIG. 5 is a perspective view of the carriage body. 1, 1, 11... Carriage 2, 3, 15. 16.
...Guide rail (6) 14...Platen 26, 27.28...Elastic material 5, 6, 7.29, 30.31...Bearing is patent applicant Canon Inc. (7) 377-

Claims (1)

[Claims] In a carriage that is equipped with a print head, is movably attached to a guide rail, and is configured to perform printing while moving in parallel along the platen, an elastic material is placed between the guide rail and the sliding part of the carriage body. A carriage characterized in that it is used.