JPH0547586U - High load transmission belt - Google Patents

Abstract

(57) [Abstract] [Purpose] Prevents wear and heat generation on the shoulder surfaces of the laminated band and the block body, and restricts the lateral movement of each band constituting the laminated band to extend the life of the belt. Improve. A head 8 is formed on a main body 6 of a block body 2 via a pillar 7, and a plurality of block bodies 2 each having a slot portion 9 between the main body 6 and the head 8 are provided in a state of having a gap or mutually. A high-load transmission belt 1 in which the laminated band 3 is hung through the slots 9 in a closely contacted state, and a slit 24 in the thickness direction of the block body is provided on the shoulder surface 10 with which the laminated band 3 abuts. Then, the protrusions 25 and the slits 24 provided along the length direction of the band surfaces facing each other between the boundary surfaces of the bands forming the laminated band 10 are fitted to each other.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a high-load transmission belt, and more particularly to a high-load transmission belt used in vehicles such as automobiles and various mechanical transmission devices.

[0002]

[Prior Art]

 Conventionally, power transmission systems for high load transmission belts are generally classified into two types: push transmission and tension transmission. Among them, the push transmission type is a structure in which a plurality of block bodies are attached to an endless multi-layer steel band in a state of being in contact with each other, and these block bodies are slidable. For example, US Pat. No. 3,720,113. It is disclosed in a detailed document.

This transmission system generally has a structure in which the block body is not fixed to the laminated band but slidably arranged on the laminated band. When the block body is hung on both the driving and driven pulleys, the belt is loosened. The block bodies gather on the side, and the block bodies gathered on the loose side of the belt are pushed from the block bodies that are hung on the drive pulley to rotate the driven pulley.

[0004]

[Problems to be solved by the device]

 However, since each block body of such a belt slides on the laminated band, wear and heat generation on the shoulder surfaces of the laminated band and the block body become large, and the steel band of the innermost layer of the laminated band tends to be easily cut. was there.

When the block body tilts and enters the pulley due to belt misalignment due to gear shifting, each band constituting the laminated band also slides laterally, and the end surface of each band contacts the side surface of the pillar portion or the pulley. Then, it was worn out and the laminated band was sometimes broken. The present invention solves such a problem, prevents wear and heat generation on the shoulder surface of the laminated band and the block body, and regulates lateral movement of each band constituting the laminated band. The purpose of this is to improve the life of the belt.

[0006]

[Means for Solving the Problems]

 A feature of the present invention is that a head is formed on a main body of a block body through a pillar, and a plurality of block bodies provided with a slot portion between the main body and the head have a gap or are in close contact with each other. In the high-load transmission belt in which the laminated bands are hung from each other through the slots, the slits in the thickness direction of the block body are provided on the shoulder surface with which the laminated bands come into contact, and the laminated bands are attached. The point is that the protrusions and the slits provided along the length direction of the band surface facing each other between the boundary surfaces of the bands that are configured are fitted to each other. In addition, a tapered surface is provided on one surface of the main body as the block body, the thickness of which gradually decreases downward, and an inclination start line at the start position of the tapered surface, left and right pulley contact surfaces, and a linear shape are formed. At least one weight reduction hole may be formed in the area defined from the bottom surface.

[0007]

[Action]

 In the high load transmission belt of the present invention, the slit in the thickness direction of the block body provided on the shoulder surface with which the laminated band abuts serves as an oil reservoir to exert a lubricating effect, and the coefficient of friction between the laminated band and the shoulder surface. To minimize wear and heat generation and improve the durability of the laminated band. Further, since the protrusions and the slits provided in the length direction of the band surface facing each other between the boundary surfaces of the respective bands constituting the above-mentioned laminated band are fitted to each other, each band is a belt due to shifting. Even if a misalignment occurs, the lateral movement is restricted and the belt durability is improved. Further, due to the weight reduction of the block body, the laminated band is less likely to be subjected to centrifugal tension when the belt rotates at a high speed, and these extend the life of the laminated band. Even if a weight reducing hole is provided, the bottom surface is bridged in a straight line, and the structure is sufficient to withstand the compressive force received from the pulley.

[0008]

【Example】

 Embodiments of the present invention will be described below with reference to the accompanying drawings. The high load transmission belt 1 shown in FIG. 1 is configured by arranging a plurality of block bodies 2 slidably on a laminated band 3, for example, a multilayer steel band. In this case, the block bodies 2 may be arranged in close contact with each other to apply pretension to the laminated band 3.

As shown in FIG. 2, each block body 2 used here has a main body 6 having a pulley abutment surface 5 that abuts against a V pulley wall surface 4, and a pillar 7 located substantially in the center. , A chevron-shaped head 8 and a pair of slot portions 9 each having a shoulder surface 10 for carrying the laminated band 3. Further, a through hole 12 having a circular shape, an elliptical shape, a rectangular shape, a square shape, or the like is provided at a substantially central portion of the block body head 8, and the through hole 12 is provided between the through hole 12 and the R-shaped upper notch portion 13. An oil groove 16 is arranged between the head top 14 and between the through hole 12 and the protrusion 15.

The lubricating oil supplied from below the block body in the vicinity of the driven pulley is stored in the space surrounded by the laminated band 3 and the lower cutout portions 17 at both corners of the pillar to form an oil reservoir. Through the side wall 18 of the pillar and the end face 19 of the laminated band to the upper notch 13, and centrifugal force causes the head 8 to lubricate while passing through the oil groove 16 opened in the vicinity thereof. It is accumulated in the through hole 12. By passing through the oil groove 16 provided in the head top portion 14 from the through hole 12 and flowing out to the outside of the block body 2 while also lubricating this periphery, the lubricating function is effectively exhibited.

In this embodiment, the through hole 12 provided in the head 8 has a diameter of 2 to 3 mm, and the oil groove 16 has a width of 0.4 to 0.8 mm and a depth of 0.2 to 0.4 mm. Is optimum from the viewpoint of lubrication performance and block strength, and it becomes possible to retain the lubricating oil in the through hole 12 and supply it to the normal oil groove 16. The path of the oil groove 16 may be lengthened in order to lubricate the head 8 in a relatively wide range.

Further, the pillar 7 of the block body 2 is provided with the protrusion 15 and the groove 22 on the back surface at the same position. With the block body 2 having the protrusions 15 and the groove portions 22, even if the block body enters the pulley and inclines and is displaced to the minimum pulley diameter, the coupling relationship between them is always maintained. Even when the body 2 is separated from the pulley, this coupling state does not change. The positions of the protrusion 15 and the groove 22 are not limited to the pillar 7.

On the other hand, the front surface of the main body 6 has a tapered surface 20 whose thickness gradually decreases downward, and an inclined start line 21 at the start position of the tapered surface has a shoulder surface 10 of the slot portion 9. It is located below. Generally, the tapered surface 20 allows the block body rotating on the pulley to incline in the traveling direction according to its curvature, and the belt pitch line becomes a line when the block body 2 rotates on the pulley. It becomes the slope start line 21 where the thickness of the main body starts to decrease.

As shown in FIG. 4, the body 6 has a flat bottom surface 26, pulley contact surfaces 5 and 5, and a weight reduction hole 27 elongated in the width direction in a region defined by the inclination start line 21. It is set up. Even if such a weight reducing hole 27 is provided, the bottom surface 27 is bridged in a linear shape, and the structure is sufficient to withstand the compressive force received from the pulley. Moreover, due to the weight reduction of the block body, the laminated band 3 is less likely to be subjected to centrifugal tension when the belt rotates at a high speed, and these extend the life of the laminated band 3. Such a block body 2 is formed by heat-treating steel or steel, diffusing and permeating boron on its surface, chemically or physically evaporating titanium nitride, titanium carbide, or the like, or by a ceramic material such as alumina. May be bonded to the surface.

Slits 24 in the thickness direction of the block body 2 are provided on the shoulder surface 10 of the slot portion 9 that carries the laminated band 3 at regular intervals in the width direction. The slit 24 serves as an oil reservoir to exert a lubricating effect and reduces the coefficient of friction between the laminated band 3 and the shoulder surface 10 of the block body 2 to minimize wear and heat generation on each surface. .

Moreover, between the boundary surfaces of the respective bands constituting the laminated band 3, a plurality of protrusions 25 and slits 24 provided along the length direction of the surface of each band are fitted. As a result, even if misalignment of the belt occurs due to gear shifting in the laminated band 3, the lateral movement of each band is restricted, and the durability of the belt is improved. Considering the thickness of each band, the height of the protrusion 25 is 0.01 to 0.1 mm, and the depth of the slit 24 is also 0.01 to 0.1 mm. Further, a protrusion 25 provided along the longitudinal direction on the innermost side of the laminated band 3 is fitted with a slit 24 provided on the shoulder surface 10. However, it is not necessary to provide the protrusion 25 on the innermost side of the laminated band 3.

[0017]

[Effect of the device]

 As described above, in the high load transmission belt of the present invention, by providing a plurality of slits in the thickness direction of the block body on the shoulder surface with which the laminated band abuts, the lubricating oil replenished to this slit is constantly supplied to the laminated band. Since the surface is lubricated, abrasion and heat generation of the laminated band are reduced, and the durability of the laminated band is improved. In addition, since the protrusions and slits provided in the length direction of the surface can be fitted between the boundary surfaces of the bands constituting the laminated band, the misalignment of the belt due to the shift of each band can be prevented. Even if it occurs, lateral movement is restricted and the durability of the belt is improved. In addition, the weight reduction of the block body makes it difficult for the laminated band to be subjected to centrifugal tension when the belt is rotated at a high speed, and these extend the life of the laminated band. Even if a weight reduction hole is provided, the bottom surface is bridged in a straight line, and the structure will withstand the compressive force received from the pulley.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a high load transmission belt according to the present invention.

FIG. 2 is a view of FIG. 1 viewed from the back side.

3 is a perspective view of a block body used in the high load transmission belt shown in FIG. 1. FIG.

FIG. 4 is a perspective view of another block body used in the high load transmission belt according to the present invention.

5 is a partial perspective view of the laminated band used in the high load transmission belt shown in FIG. 1 as viewed from the innermost side.

[Explanation of symbols]

 2 Block body 3 Laminated band 6 Main body 7 Pillar 8 Head 10 Shoulder surface 12 Through hole 15 Projection portion 16 Oil groove 20 Tapered surface 21 Inclination start line 24 Slit 25 Protrusion portion 27 Weight reduction hole

Front page continued (72) Creator Takashi Masuda 4-1-2-1, Hamazoe-dori, Nagata-ku, Kobe Mitsuboshi Belt Co., Ltd.

Claims (2)

[Scope of utility model registration request] 1. A head is formed on a main body of a block body through a pillar, and a plurality of block bodies having a slot portion between the main body and the head are arranged in parallel with each other with a gap or in close contact with each other. In the belt for high load transmission in which the laminated band is hung through the slot part,
Slits in the thickness direction of the block body are provided on the shoulder surface with which the laminated band abuts, and protrusions provided along the length direction of the band surfaces facing each other between the boundary surfaces of the bands constituting the laminated band. A belt for high load transmission, characterized in that a slit and a slit are fitted together. 2. A block surface is provided with a tapered surface on one surface of the main body, the thickness of which gradually decreases downward,
The high load transmission belt according to claim 1, wherein at least one weight reducing hole is formed in a region defined by an inclined start line that is a start position of the tapered surface, the left and right pulley contact surfaces, and a linear bottom surface.