JPS627576A - Platen roller - Google Patents

Abstract

PURPOSE:To reduce vibration of platen and noise which are generated by an impact, by providing a hard elastic layer on the outer periphery of a stiff rotatable base of a platen. CONSTITUTION:The rotatable base 1 for constituting a solid cylindrical platen and a rotary shaft 1A are formed as one body from a stiff vibration-damping material. The ahrd elastic layer 2 is provided along the outer-peripheral surface of the base 1. Accordingly, noise and vibration generated surface of the base 1. Accordingly, noise and vibration generated on an impact in printing can be markedly reduced by the rotatable base 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application 1] The present invention relates to a platen roller, and particularly to a blank roller used in printing devices such as typewriters.

[Prior Art] Conventionally, this type of platen roller has rotating shafts attached to both ends thereof, and is made of a cylinder made of a metal material such as stainless steel, aluminum or mild steel, or is made of a cylinder made of a metal material such as stainless steel, aluminum or mild steel. A structure coated with hard rubber is usually used. However, such a conventional platen roller
om*fll? Of.

However, in recent years, structures in which foam, thermoplastic resin, or the like is filled between the core material and the cylindrical tube have been developed, as they generate a lot of noise.

[Problems to be Solved by the Invention] However, such conventional platen rollers still have drawbacks in that vibration isolation and noise generation cannot be sufficiently prevented.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to eliminate such drawbacks, so that even if the surface of the platen roller receives an impact, the vibrations generated by the impact are absorbed by the outer peripheral part of the platen roller, and the rigidity of the platen roller is increased along with its rotating shaft. It is an object of the present invention to provide a platen roller whose vibration is absorbed by a rotating base integrally molded with a certain vibration damping material.

[Means for solving the problem] In order to achieve the above object, in the present invention, in a platen roller used in a printing device such as a typewriter, the one-turn base and the rotating shaft are integrated with a rigid vibration-damping material. A hard elastic layer is provided on the outer periphery of the rotating base.

[Function] In the platen roller configured as described above, vibrations generated by impact on the surface of the platen roller are first absorbed by the hard elastic layer covering the outer peripheral surface of the cylindrical rotating base.
Furthermore, since it is absorbed not only by the rotating base made of the above-mentioned rigid vibration damping material but also by its rotating shaft, the vibration and noise generated by the impact during printing can be significantly reduced compared to conventional methods. can.

[Examples] Examples of the present invention will be described below in detail and specifically based on the drawings.

FIG. 1 shows an embodiment of the present invention, where l is a solid cylindrical rotating base and IA is a rotating shaft extending from both end faces thereof. Here, the rotating base 1 and the rotating shaft IA are integrally molded using a rigid damping material. That is, in recent years, it has been known that there are materials, such as cast iron and zinc-aluminum alloys, which have a high damping ability and have a vibration damping effect, in which vibration energy is consumed due to internal friction of the composition.

Therefore, in this example, the rotary base 1 etc. is molded from such a vibration damping material, and a hard elastic layer 2 is formed from hard rubber, resin, fiber material, etc. along the outer peripheral surface of the rotary base 1, etc.
This configuration reduces noise and vibration caused by impact, especially on rotating bases! itself can be significantly reduced.

Fig. y, 2 shows another embodiment of the present invention. In this embodiment, narrow diameter portions 1B are formed in each part of the rotating shaft 1^ extending from both ends of the rotating base 1. Therefore, vibrations are further suppressed through this narrow diameter portion 1B.

[Effect of the invention 1 As explained above, according to the present invention, the cylindrical solid rotating base and the rotating shafts provided at both ends of the rotating base are integrally molded from a rigid, high-damping-capacity material, and the rotating base is Since a layer of hard IR elastic material is formed along the outer circumferential surface of the printer, the effect of suppressing noise and vibration generated during printing can be significantly enhanced compared to the conventional method.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an example of the configuration of the platen roller of the present invention. FIG. 2 is a sectional view showing the structure of another embodiment of the present invention. l...Rotating base body, IA...Rotating shaft, 1B...Slim diameter portion, 2...Hard elastic layer.

Claims (1)

[Claims] A solid cylindrical rotating base integrally molded from a high damping capacity material, a rotating shaft extending from both ends of the solid cylindrical rotating base, and a hard elastic member disposed along the outer peripheral surface of the rotating base. A platen roller characterized by comprising a layer.