KR200381239Y1 - Roller having gear for transmitting power - Google Patents

Abstract

The present invention is a gear formed in the shape of a spur gear, and as long as the outer diameter is formed in a cylindrical shape 0.01 to 0.03 mm larger than the pitch circle of the gear and smaller than the outer diameter of the gear, so as to be coupled to both sides of the gear to form a concentric axis with the gear. It provides a power transmission roller configured to include a pair of support blocks. Therefore, the power transmission roller according to the present invention, the different gears are coupled so that the interval between each pitch circle is kept constant, it is possible to transmit the power stably, even if the external gear is applied in the direction in which the different gears are compressed, the teeth are not damaged. There is no merit.

Description

Power transmission roller with gears {Roller having gear for transmitting power}

The present invention relates to a power transmission roller having a gear, more specifically, a gear formed of a spur gear structure and a support block having an outer diameter larger than the pitch circle of the gear are coupled to both sides of the gear, The present invention relates to a power transmission roller configured to prevent breakage of a gear.

A power train is a device used to transfer power from a power source to a work part, also called a transmission. Types of power transmission devices include gear transmissions in which teeth are engaged to transfer power directly, belt transmissions using belt chains, friction transmissions using surface friction such as clutches, fluid joints and torque converter prime movers in fluid form. These include a hydraulic motor that transmits power by sending a high pressure oil generated by rotating a hydraulic pump to a hydraulic motor or a hydraulic cylinder, and an electric transmission device that transmits power by sending a current generated by rotating a generator to a motor. Power transmission device is to achieve the purpose of power supply and transmission, rotational speed control, etc., it is used alone or several devices to form a power transmission system.

Among the various power transmission devices as described above, a gear transmission device having a simple structure, capable of transmitting a large power and having a relatively high power transmission reliability is most commonly used. Such gears have different teeth when an external impact is applied. They are often squeezed into one another, which normally renders power transmission impossible or even the cogs breaking.

In order to solve this problem, the device for fixing the rotating shaft of the gear is designed in a variety of structures so that the distance between the teeth of the two different gears are kept constant, but the structure is complicated and difficult to manufacture in order to secure the rotating shaft stable There was this.

The present invention is devised to solve the above problems, the different gears are coupled so that the interval between each pitch circle is kept constant, it is possible to transmit the power stably, the external force in the direction in which the different gears are compressed It is an object of the present invention to provide a power transmission roller which is configured so that the teeth are not damaged even if applied.

Power transmission roller according to the present invention for solving the above problems, the gear is formed in the shape of a spur gear, the outer diameter is formed in a cylindrical shape larger than the pitch circle of the gear and smaller than the outer diameter of the gear to form a concentric axis with the gear It comprises a support block coupled to the side of the gear.

At this time, the support block is preferably coupled to both sides of the gear.

In addition, the outer diameter of the support block is preferably formed 0.01 to 0.03 mm larger than the pitch circle of the gear.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the power transmission roller according to the present invention.

1 is a perspective view illustrating a shape in which a pair of power transmission rollers according to the present invention is coupled, and illustrates a shape in which a first power transmission roller and a second power transmission roller are coupled to transmit power.

The first power transmission roller 100 includes a first gear 110 formed in a spur gear shape, and a pair of first support blocks 120 coupled to both side surfaces of the first gear 110. do. Since the first support block 120 is formed in a cylindrical shape having an outer diameter larger than the pitch circle of the first gear 110 and smaller than the outer diameter of the first gear 110, the first support block 120 is coupled to the side of the gear to form a concentric axis with the gear. The tooth end of the first gear 110 protrudes outward from the outer circumferential surface of the first support block 120.

Since the second power transmission roller 200 has the same structure as the first power transmission roller 100, detailed descriptions of the second gear 210 and the second support block 220 will be omitted.

As shown in FIG. 1, when the first power transmission roller 100 and the second power transmission roller 200 are coupled to each other, the first support block 120 and the second support block 220 are in close contact with each other. Cogs are coupled to the first gear 110 and the second gear 210 to enable power transmission. When an external force is applied to bring the first power transmission roller 100 and the second power transmission roller 200 closer, the first support block 120 before the first gear 110 and the second gear 210 are compressed. ) And the second support block 220 is first compressed, so that the teeth of the first gear 110 and the teeth of the second gear 210 is not damaged.

At this time, the first support block 120 and the second support block 220 is preferably made of a material having a high hardness so as not to be deformed or damaged when pressed by an external force.

FIG. 2 is a front view illustrating a shape in which a pair of power transmission rollers according to the present invention are coupled, and FIG. 3 is a cross-sectional view taken along the line A-A of FIG. 2.

As shown in FIGS. 2 and 3, when the first power transmission roller 100 and the second power transmission roller 200 are coupled to each other, the pitch circle 112 of the first gear 110 and the second gear 210 of FIG. Since the pitch circle 212 is spaced at a predetermined interval, the tooth end of the first gear 110 is not in contact with the second gear 210 and the tooth end of the second gear 210 is not in contact with the first gear 110. No. Therefore, even if the first support block and the second support block are finely deformed by the external force, the first gear 110 and the second gear 210 are not compressed or damaged.

At this time, when the interval between the pitch circle 112 of the first gear 110 and the pitch circle 212 of the second gear 210 is excessively large, the power transmission efficiency is lowered, When the interval between the pitch circle 112 and the pitch circle 212 of the second gear 210 is excessively small, the first gear 110 and the second gear 210 may be compressed. Accordingly, the pitch circle 112 of the first gear 110 and the pitch circle 212 of the second gear 210 are preferably spaced within 0.01 to 0.03 mm.

Thus, in order for the interval between the pitch circles 112 and 212 to be spaced within 0.01 to 0.03 mm, the outer diameter of the support block should be formed to be 0.01 to 0.03 mm larger than the pitch circle of the gear.

The present invention has been described in detail using the preferred embodiments, but the scope of the present invention is not limited to the specific embodiments, and should be interpreted by the appended utility model registration claims. In addition, those of ordinary skill in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

The power transmission roller according to the present invention can be stably transmitted because different gears are coupled so as to maintain a constant distance between each pitch circle, and the teeth are not damaged even if an external force is applied in the direction in which the different gears are compressed. There is no merit.

1 is a perspective view showing a shape of a pair of power transmission rollers according to the present invention.

Figure 2 is a front view showing a shape in which a pair of power transmission rollers according to the present invention is coupled.

3 is a cross-sectional view taken along the line A-A shown in FIG. 2.

<Description of the symbols for the main parts of the drawings>

100: first power transmission roller 110: first gear

120: first support block 200: second power transmission roller

210: second gear 220: second support block

Claims (3)

A gear formed in the shape of a spur gear; A support block having an outer diameter larger than the pitch circle of the gear and smaller than the outer diameter of the gear, the support block being coupled to the side of the gear to form a concentric axis with the gear; Power transmission roller, characterized in that configured to include. The method according to claim 1, The support block, Power transmission roller, characterized in that coupled to each side of the gear. The method according to claim 1 or 2, The outer diameter of the support block is a power transmission roller, characterized in that formed 0.01 to 0.03mm larger than the pitch circle of the gear.