JPS608541A - V-belt - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a rigid filament which is close to a wide parallel side of a cross section and which runs adjacent to each other in a thread-like twist in a plane parallel to the cross section. The present invention relates to a V-belt having a carrier and four parts uniformly spaced from each other on an inner circumferential surface defined by narrow parallel sides and extending transversely over the belt width and separating the toothed blocks from each other.

It is known that smaller belt pulleys cannot be used without giving flexibility and damage. In that case, the block need only be configured to phase only the mutual angular movement of the target, not for engagement with the front gear.

Moreover, the driving force is transmitted exclusively over the relatively inclined wedge flanks by means of frictional resistance.

Problems to be Solved by the Invention The basic problem of this invention is to further improve the deflection behavior of the V-belt beyond the possibilities given to it, and to significantly improve the rotational performance with a new configuration. .

Composition of the invention The above problems are solved by the following configuration.

That is, a, the block between the concave f7[S and the convex portion on the inner circumferential surface has a trapezoidal horizontal lO'V surface when viewed in the longitudinal direction of the belt,
In this cross section, there are rounded arcuate parts extending approximately semicircularly and interpenetrating each other between the blocks that are in contact with each other by 1 μi, on the legs of the opposing side flanks, and the depth of the four parts is the name of the entire cross-sectional width of the belt. , b, the width of the block is at least twice the width of the recess in the longitudinal direction of the belt, and on the side of the rigid carrier opposite the flock the belt back is essentially transverse and extends over the entire width of the belt. It is composed of ribs that are much lower and narrower than the blocks, and the spacing between each two adjacent lips is equivalent to the cross-sectional width of one rib, and each block has at least three ribs. The two replies are opposite each other.

This novel belt of such construction has a mechanically machined wedge flank without fiber overlay, and according to one further feature, the end faces of the blades are cut into inclined surfaces at acute angles to each other. It shows the ease of lip deflection. This flexibility makes the V-belt rotate with belt bobbins of small diameter not previously thought possible, thus making it particularly suitable for use in confined spaces. V that dynamically produces stress while constantly increasing and decreasing continuously on both sides of a rigid support that marks the neutral plane.
The elimination of the stagnation and compression zones of the shaped cross-section results in an abrupt resolution of the stress concentrations that normally occur whenever there is a synergistic effect of several important components of the belt section that are still dynamically stressed. The greatly reduced bend stress along with the same reduced heat generation significantly extends the life of the new belt even with continuous use. The lateral geometrical rigidity, which is desirable for driving suspension and anti-vibration sensitivity, is then not compromised at all.

The invention can be used particularly advantageously in combination with narrow V-belts according to German Industrial Standard 7753. However, this does not lead to the release of this new V-belt from the classic V-belt (German Industrial Standard 2215) to 1a. Similarly, the V-belt, which does not extend beyond the mode of an endless or finite V-belt and has a usage control plate, is made of natural or synthetic rubber and has a V-shape of 1υ horizontally on one plane [threaded in the longitudinal direction at the - point of the upper part of the surface]. A thread-like li' that goes through the shells of Yamabushi! The carrier material 1 is composed of a polyester fiber strand or a mixture with a 'JA fiber core'. mutually inclined (rust flanks are obtained by cutting a longer-wound belt, free from any overlay of fabric or other fibers). Establish a plane and fill the bottom of this plane.

The upsetting zone on the lower side of the machinable carrier 1 is divided into tooth-shaped blocks B with a trapezoidal lateral fiR surface depending on the formation of the horizontally expanding recesses 2. On the other hand, the tension zone forming the belt back is formed on the upper side of the rigid carrier over almost its entire depth lΔ and is made up of a much larger number of transverse ribs 4 compared to the blocks 6. The horizontal ribs 4, which have a fingertip-like rounded cross-sectional shape and are cut diagonally toward the belt center at both side edges, are closely continuous, so that the cross-sectional shape of the gap and the cross-sectional shape are virtually mutual. They are identical, and at least three of each are opposed to the block 6 on the belt inner jacket surface.

[Brief explanation of drawings]

The figure is a partial perspective view of a narrow belt according to the present invention. Symbols in the figure; 1... Rigid carrier, 2... Concave portion, 3... Block,
4... Riff. Agent: Mitsuyoshi Ezaki Agent: Mitsufumi Ezaki

Claims (1)

[Claims] A filament-like rigid carrier that is close to the wide parallel side surface of the cross section and passes adjacent to it in a thread-like twist in a plane parallel to the cross section; Draw toothed blocks to each other laterally over the entire width of the belt with uniform spacing from each other on the inner circumferential surface bounded by narrow parallel sides.
In a V-belt having a concave portion, four parts (2
) and (2) have a trapezoidal cross section when viewed in the longitudinal direction of the belt, and in the cross section of The rounded bow-shaped parts that enter are located on the legs of the opposite side cranks, and there are recesses (
The depth of 2) is up to 1/3 of the entire cross-sectional width of the belt,
The width of the block (3), viewed in the longitudinal direction of the belt, is at least twice the width of the recess (2), and on the side of the rigid carrier (1) opposite to the block (3), the belt back is essentially It is composed of lips (4) that are much lower (and narrower) than the blocks and span the entire length of the belt width in the transverse direction, and the distance between each two adjacent lips (4) is equal to the width of one lip. The size corresponds to the surface width, and each block (3
A V-belt characterized in that at least three lips (4) are placed opposite each other. 2) The V-belt according to claim 1), which is mechanically processed and has wedge sides with no ridges on the fibers. 6) The V-belt according to claim 1) or 2), wherein the end surfaces of the lips (4) are cut off so as to form a mutually matured shape. The V according to any one of claims 1) to 6), wherein the cross section of the lip (4) has a rounded fingertip shape.
belt.