JP2002340099A - Toothed belt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a toothed belt which is colorful, with low emission of noises, and favorably used for an internal combustion engine or an auxiliary unit. SOLUTION: The toothed belt is structured so that a printed colored part 50 of any color other than black, wherein parts being as marks are punched out, is formed in the whole area of the back surface of the belt.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toothed belt for driving an internal combustion engine or an auxiliary machine.

[0002]

2. Description of the Related Art Usually, on the back side of a toothed belt, character symbols such as a product name, a manufacturer name, and a part name and other symbols (letter symbols and symbols are referred to as symbols in this specification).
Is formed by polishing the slab surface serving as the back surface of the belt, and then transferring the screen to a short range in the longitudinal direction of the belt, screen printing, or painting.

However, in the above-described conventional method, since a convex portion corresponding to the thickness of a printed or painted symbol is formed on the back surface of the belt, a system in which a pulley is pressed against the back surface of the belt, such as a tensioner, a water pump, or an idler, is used. When used, there is a problem in that noise is generated each time the pulley runs up to the convex portion and falls down on the back of the belt.

[0004] In general, a toothed belt uses a rubber containing carbon black in order to ensure strength and abrasion resistance, etc., so that the belt has a black color. They want a colorful belt. As a method for solving this problem, a light-color belt containing no carbon black has been disclosed. However, there is a problem that the belt cannot be used for driving an internal combustion engine or an auxiliary machine due to low strength and abrasion resistance.

Therefore, in the industry dealing with this type of belt, there is a long-awaited need to develop a toothed belt that is colorful, has low noise, and can be used for driving an internal combustion engine and auxiliary equipment.

[0006]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a toothed belt which is colorful, has low noise, and can be used for driving an internal combustion engine or an auxiliary machine.

[0007]

Means for Solving the Problems (Invention of Claim 1)
In the toothed belt according to the present invention, a printed coloring portion of a color other than black, in which only a portion serving as a symbol is removed, is formed in the entire area on the back surface of the belt. (The invention according to claim 2) In the toothed belt according to the present invention, in the belt longitudinal direction on the back side of the belt, a printed symbol of a color other than black is printed in a fixed length region in all other regions except the fixed length region. And a printed colored portion of a color other than black is formed on the printed symbol, and the printed symbol and the printed colored portion have substantially the same thickness. According to a third aspect of the present invention, there is provided a toothed belt according to the present invention, wherein a printed symbol of a color other than black is printed and colored in a portion other than the printed symbol on a back surface of the belt. Are formed, and the printed symbol and the printed colored portion have substantially the same thickness. (Invention of Claim 4) In the toothed belt of the present invention, printed symbols of colors other than black are formed with substantially the same thickness over the entire belt longitudinal direction on the back surface of the belt. (The invention according to claim 5) The toothed belt according to the invention relates to the invention according to claim 1, wherein the printed coloring portion is formed on the back surface of the belt by transfer, screen printing, or painting. (The invention according to claim 6) The toothed belt according to the present invention relates to the invention according to claim 2 or 3, wherein the printed coloring portion and the printed symbol are formed on the back surface of the belt by transfer, screen printing or painting. (The invention according to claim 7) The toothed belt according to the invention relates to the invention according to claim 4, wherein the printed symbols are formed on the back surface of the belt by transfer, screen printing or painting.

The operation and effect of the toothed belt of the invention will be clarified in the following embodiments of the invention.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A toothed belt according to an embodiment of the present invention will be described with reference to the drawings. [Embodiment 1] FIG. 1 is a perspective view of a main part of a toothed belt B according to an embodiment of the present invention. (About the structure of the toothed belt B)
As shown in FIG. 1, a back rubber 1 and a tooth portion 2 integrally formed of a rubber material, a plurality of core wires 3 embedded in the back rubber 1 so as to extend in a belt longitudinal direction, and a tooth portion 2 , And a blue printed coloring portion 50 in which only a portion corresponding to the character symbol “UNITTA” is removed over the entire outer surface of the back rubber 1. Here, in the toothed belt B, since the rubber containing carbon black is used in order to secure strength, abrasion resistance, etc., the outer surface of the back rubber 1 has a black color. Has become a colorful blue. Here, in the toothed belt B, the character symbol “UNITTA” is formed in black, which is the color of the back rubber 1.

The color of the print coloring section 50 is not limited to blue, and any color other than black can be selected.

Although the character symbol is "UNITTA", the symbol may be, for example, a manufacturer name, a part name, a part number, a production lot number, and the like. It can also be a combination with a code. The same applies to other embodiments. (About the manufacturing method of the toothed belt B). First, as shown in FIG. 2, a cylindrically shaped tooth cloth 4 is put on a cylindrical mold M provided with tooth grooves m in the longitudinal direction, and then the core wire 3 is spirally wound. 1
And a rubber plate material G constituting the tooth portion 2 is wound (hereinafter, these members are wrapped around a mold M). . The molded body is placed in a vulcanizing pot, and heated and pressed to perform vulcanization molding. . After vulcanization molding is completed, back rubber 1 and tooth 2
The belt slab in which the rubber plate material G, the core wire 3 and the tooth cloth 4 are integrated is taken out, and the outer surface of the back rubber 1 is polished to make the belt slab a predetermined thickness. . Character symbols "UNITT"
In order to form a printed colored portion 50 from which only the portion "A" has been removed, the heat transfer film 5 shown in FIG. 3 is wound around the entire circumference and then transferred by applying heat. The thermal transfer film 5 is formed by forming a blue print coloring portion 50 on a backing film 51. . The belt slab is cut to a predetermined width. FIG. 1
Is completed. (About the point that this toothed belt B is excellent). Since the portions other than the uncolored portions serving as character symbols are blue, it is possible to provide a colorful toothed belt that meets customer requirements. . Since the backside of the belt has only a concave letter and symbol, even when used in a system in which the pulley presses against the backside of the belt, such as a tensioner, water pump, or idler, the noise level is lower than that of the conventional technology. Occurrence is low. . In the toothed belt B, since a rubber material containing carbon black is used, the belt strength, abrasion resistance, and the like are ensured, and thus the belt B can be used for driving an internal combustion engine or an auxiliary machine. . Since the blue printed coloring portion 50 from which only the character symbols are removed is transferred and formed over the entire outer surface of the black back rubber 1, the symbol "UNITTA" is visually recognized as a black symbol. (Others) The character symbol "UNIT"
Screen printing may be used to form the print coloring portion 50 in which only the portion that becomes “TA” is omitted. In this case, screen printing is performed using a plate that does not allow ink to pass through only the portion that becomes the character symbol “UNITTA”.

In addition, a printed coloring portion in which only a portion corresponding to the character symbol "UNITTA" is removed over the entire outer surface of the backing rubber 1.
The equivalent of 50 may be formed by painting (painting with a brush or spraying with a spray). In this case, a mask seal may be attached to a portion of the outer surface of the back rubber 1 that will become a character symbol, and in this state, the back rubber 1 is painted in a color other than black, and then the mask seal may be rolled up. [Embodiment 2] FIG. 4 is a perspective view of a main part of a toothed belt B according to an embodiment of the present invention. (About the structure of the toothed belt B)
As shown in FIG. 4, a back rubber 1 and teeth 2 integrally formed of a rubber material, a plurality of core wires 3 embedded in the back rubber 1 in a manner extending in the belt longitudinal direction, and a tooth 2 And a white cloth “UNITTA” in a fixed length region L1 in the belt longitudinal direction on the back side of the belt.
In the print character symbol 52a, a blue print coloring portion 52b is formed by transfer in all the areas L2 except the fixed length area. In addition, the printing character symbol 52a and the printing coloring portion 52
b is set to be approximately the same thickness.

Here, in this toothed belt B,
The outer surface of the backing rubber 1 is black because the rubber containing carbon black is used to ensure strength and abrasion resistance, etc., but the printed character symbol 52a is white, except for the printed character symbol 52a in the area L1. Is black, and the area L2, which constitutes almost the entire belt outer surface, is colorful blue. In addition,
The print character symbol 52a is white, the print coloring portion 52b is blue,
Each color is not limited, and any color other than black can be selected.

Since the toothed belt B of this embodiment has the above-described configuration, it is colorful, has low noise generation, and can be used for driving an internal combustion engine or an auxiliary machine. (Regarding the method of manufacturing the toothed belt B) Except for using a heat transfer film 5 in which a white print character symbol 52a and a blue print coloring portion 52b are formed on a backing film 51 as shown in FIG. , And are completely the same as the first embodiment. In order to further suppress the generation of noise, in the thermal transfer film 5, the print coloring portion 52b shown in FIG.
It is preferable that the gap LS between the edge of the print character symbol 52a and the print character 52a be set small. (Others) Screen printing may be used to form the printed character symbols 52a and the printed colored portions 52b on the outer surface of the back rubber 1. In this case, the print character symbol 52 in the area L1
Screen printing is performed using a plate that does not pass ink only in portions other than a.

A printed character symbol 52 is provided on the outer surface of the backing rubber 1.
a and the printed coloring portion 52b may be formed by painting. In this case, a mask seal is attached only to the portion other than the printed character symbol 52a in the area L1.
What is necessary is just to paint on a color other than black. [Embodiment 3] FIG. 6 is a perspective view of a main part of a toothed belt B according to an embodiment of the present invention. (About the structure of the toothed belt B)
As shown in FIG. 6, a back rubber 1 and a tooth portion 2 integrally formed of a rubber material, a plurality of core wires 3 embedded in the back rubber 1 so as to extend in a belt longitudinal direction, and a tooth portion 2 And a white printed character symbol 53a of “UNITTA” is formed on the back of the belt by transfer, and a blue printed colored portion 53b is formed on a portion other than the printed character symbol 53a by transfer. . The print character symbol 53a and the print coloring portion 53b are set to have substantially the same thickness.

Here, also in this toothed belt B,
Although rubber containing carbon black is used to ensure strength and abrasion resistance, etc., the printed character symbol 53a is white, the portions other than the printed character symbol 53a are blue, and the belt back is black. Has not appeared. In addition, although the print character symbol 53a is white and the print coloring part 53b is blue,
The present invention is not limited to this, and any color can be selected as long as the color of the print character symbol 53a and the color of the print coloring portion 53b are different and other than black.

Since the toothed belt B of this embodiment has the above-described configuration, it is colorful, generates less noise, and can be used for driving an internal combustion engine or an auxiliary machine. (Regarding the manufacturing method of the toothed belt B) As the thermal transfer film 5, a film in which a white printed character symbol 53a and a blue printed colored portion 53b surrounding the white printed character symbol 53a are formed as shown in FIG. Except for this, it is completely the same as the first embodiment. (Other) White printed character symbol 53a on the outer surface of the back rubber 1
When forming the blue print coloring portion 53b, screen printing may be used. In this case, for example, screen printing is performed using a printing plate in which only the printing character symbol 53a passes through ink, and then screen printing is performed using a printing plate in which only the printing character symbol 53a passes through ink.

A printed character symbol 53 is provided on the outer surface of the backing rubber 1.
a and the print coloring portion 53b may be formed by painting. [Other Embodiments] As the toothed belt B of the embodiment of the present invention, if the basic structure of the belt main body is the same as that of the first, second, and third embodiments, the entire belt longitudinal direction on the back surface of the endless belt is The blue printed character symbol may be transferred with substantially the same thickness. In addition, as long as the print character symbol is not black, a desired color can be selected.

In this toothed belt, as described above, the blue printed characters and symbols are transferred with substantially the same thickness over the entire belt longitudinal direction area on the back side of the belt. Even when used in a system that presses against the back surface, the phenomenon of running up and down of a pulley such as a toothed belt described in the section of the prior art hardly occurs, and noise is low.

The toothed belt is colorful because blue printed character symbols are transferred over the entire belt longitudinal direction on the back of the belt.

Further, since the toothed belt has the same basic structure of the belt body as those of the first, second and third embodiments, it can be used for driving an internal combustion engine or an auxiliary machine.

The blue printed characters and symbols formed over the entire belt longitudinal direction on the back of the endless belt may be formed by screen printing or painting.

[0023]

The present invention has the following effects since it has the above-described configuration.

From the content described in the section of the embodiment of the invention, a toothed belt that is colorful, has low noise generation, and can be used for driving an internal combustion engine and auxiliary equipment can be provided.

[Brief description of the drawings]

FIG. 1 is a partial perspective view of a toothed belt according to a first embodiment of the present invention.

FIG. 2 is an explanatory view showing a method of manufacturing the toothed belt.

FIG. 3 is a partial perspective view of a thermal transfer film used when manufacturing the toothed belt.

FIG. 4 is a partial perspective view of a toothed belt according to a second embodiment of the present invention.

FIG. 5 is a partial perspective view of a thermal transfer film used when manufacturing the toothed belt of the second embodiment.

FIG. 6 is a partial perspective view of a toothed belt according to a third embodiment of the present invention.

FIG. 7 is a partial perspective view of a thermal transfer film used when manufacturing the toothed belt of the third embodiment.

[Explanation of symbols]

 B Toothed belt 1 Back rubber 2 Tooth section 3 Core wire 4 Tooth cloth 5 Thermal transfer film 50 Printing coloring section 51 Backing film 52a Printing letter symbol 52b Printing coloring section 53a Printing letter symbol 53b Printing coloring section

Continued on the front page (72) Inventor Kaiki Umehata 172 Ikezawacho, Yamatokoriyama-shi, Nara Pref.

Claims (7)

[Claims] 1. A toothed belt characterized in that a printed coloring portion of a color other than black, in which only a symbol portion is removed, is formed in the entire area on the back surface of the belt. 2. In the belt longitudinal direction on the back of the belt,
A print symbol of a color other than black in a certain length area, a print coloring part of a color other than black is formed in all areas other than the certain length area, and the print symbol and the print coloring part are A toothed belt having substantially the same thickness. 3. A printed symbol of a color other than black is formed on the back surface of the belt, and a printed colored portion of a color different from black and the color of the printed symbol is formed in a portion other than the printed symbol. A toothed belt, wherein the colored portions have substantially the same thickness. 4. A toothed belt characterized in that printed symbols of colors other than black are formed with substantially the same thickness over the entire belt longitudinal direction on the back surface of the belt. 5. The toothed belt according to claim 1, wherein the print coloring portion is formed on the back surface of the belt by transfer, screen printing, or painting. 6. The toothed belt according to claim 2, wherein the printing coloring portion and the printing symbol are formed on the back surface of the belt by transfer, screen printing, or painting. 7. The toothed belt according to claim 4, wherein the printed symbols are formed on the back surface of the belt by transfer, screen printing, or painting.