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Pulley for use with toothed belt

A technology of timing belts and pulleys, used in belts/chains/gears, components with teeth, gear vibration/noise attenuation, etc., can solve the problems of fluid sound or loud cracking sound, and reduce fluid sound or cracking sound. , The effect of reducing meshing noise and easy discharge

Inactive Publication Date: 2011-05-04
TSUBAKIMOTO CHAIN CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But on the other hand, when the timing belt pulley 500 is meshed with the timing belt, the path for the compressed air to discharge is only a small gap between the side of the timing belt and the flange 520, so there is fluid sound or cracking sound. very big problem

Method used

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  • Pulley for use with toothed belt
  • Pulley for use with toothed belt
  • Pulley for use with toothed belt

Examples

Experimental program
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Effect test

no. 1 example

[0068] As the pulley 100 for a timing belt according to the first embodiment of the present invention, as figure 2 , image 3 As shown: the outer periphery of the disc body 110 with flanges 120 on both sides is provided with teeth 111 meshing with the timing belt 150 , and a recess 112 is formed in the center of the width direction of the teeth 111 . The recessed portion 112 extends over the entire outer circumference of the disk body 110 including the tooth end portion 114 , the tooth surface portion 115 , and the tooth bottom portion 113 of the tooth 111 , and has a constant width and a constant depth from the surface.

[0069] If the synchronous belt 150 is engaged with the pulley 100 for this synchronous belt, then as Figure 4 to Figure 6 Shown: only the two ends of the width direction of the synchronous belt 150 are in contact with the tooth end 114, the tooth surface 115 and the tooth bottom 113 of the original tooth 111, and the central part of the synchronous belt 1...

no. 2 example

[0076] As the pulley 200 for a timing belt according to the second embodiment of the present invention, as Figure 7 , Figure 8 As shown: the outer periphery of the disc body 210 with flanges 220 on both sides is provided with a tooth 211 meshed with the synchronous belt, and a recessed part 212 is formed in the central part of the width direction of the tooth 211, and the recessed part 212 The center in the width direction has a deeper concave groove portion 216 extending over the entire outer circumference of the disc body 210 . The recessed portion 212 extends over the entire outer circumference of the disc body 210 including the tooth end portion 214 , tooth surface portion 215 , and tooth bottom portion 213 of the tooth 211 , and has a constant width and a constant depth from the surface.

[0077] In this way, in addition to forming the remaining gaps near both ends of the recessed part 212, a gap is also formed by the groove part 216. When the pulley 200 for the timing...

no. 3 example

[0080] As the pulley 300 for a timing belt according to the third embodiment of the present invention, as Figure 9 , Figure 10 As shown: the outer periphery of the disc body 310 with the flange 320 on both sides is provided with a tooth 311 engaged with the synchronous belt, and a recessed part 312 is formed in the central part of the width direction of the tooth 311, while the recessed part 312 has a convex portion 317 extending over the entire outer circumference of the disc body 310 at the center in the width direction. The recessed portion 312 extends over the entire outer circumference of the disc body 310 including the tooth end portion 314 , the tooth surface portion 315 , and the tooth bottom portion 313 of the tooth 311 , and has a constant width and a constant depth from the surface.

[0081] In this way, even if the timing belt bends in an arcuate shape, it is still in contact with the convex portion 317 in the center of the width direction of the concave portion...

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PUM

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Abstract

The invention provides a toothed-belt pulley that is capable of reducing pneumatic and plosive sounds and of reducing engagement noises while stably transmitting rotational movements by suppressing widthwise wobbling of a toothed belt and while reducing a manufacturing cost of the pulley by simplifying its manufacturing process and of improving a production yield by shortening its manufacturing time. The toothed-belt pulley (100) has a disk (110) whose inner circumference is fittingly attached to a rotary shaft (101) and which is provided with teeth (111) to be engaged with the toothed belt (150) around the outer circumference and flanges (120) erected on the both outer sides of the toothed belt, wherein each of the teeth (111) has a concaved recess (112) with which the toothed belt (150) deformably engages in the widthwise center part thereof.

Description

technical field [0001] The present invention relates to a pulley for a timing belt which is engaged with a timing belt to transmit rotational motion. Background technique [0002] Conventionally, a pulley for a timing belt having teeth engaged with the timing belt and flanges provided upright on the outside of both sides of the timing belt is known. [0003] Well-known synchronous belt pulley 500 such as Figure 13 As shown, flanges 520 are erected on both sides of the teeth 511 meshing with the timing belt, and the vibration of the timing belt in the width direction can be suppressed by the flanges 520, and the rotational motion can be stably transmitted. But on the other hand, when the timing belt pulley 500 is meshed with the timing belt, the path for the compressed air to discharge is only a small gap between the side of the timing belt and the flange 520, so there is fluid sound or cracking sound. Very big question. [0004] In addition, there is also a known pulley f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H55/36
CPCF16H55/171F16H57/0006
Inventor 金森善友渕正人
Owner TSUBAKIMOTO CHAIN CO
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