JPS60164040A - Link type v-belt device - Google Patents

Abstract

PURPOSE:To increase both contact pressure and contact length between a V-belt and pulleys to decrease the slip rate of the belt, by arranging V-blocks such that they are biased radially inward with respects to pins. CONSTITUTION:In such an arrangement that V-blocks 4 are biased dowards, in the drawing, with respect pins 3, links 2 are engaged in the V-groove 6 of a V- pulley 7 through low side V-blocks 4 to receive a drive force P, and the tension P of a V-belt 5 acts upon the line connecting between pins 3, 3 at points which are biased from each other with a bias length (l), thereby the links 2 receives a movement (p. l). That is, the links 2 act upon the V-pulleys 7 on the winding sides thereof with a tilting force, and therefore, the V-belt between a pair of V- pulleys are exerted at its both ends with inward tilting force, thereby the slip rate thereof may be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a link-type V-belt device applied to a power transmission system or the like in a vehicle.

Conventionally, this type of device includes a link-type V-belt, which comprises an endless link chain in which a large number of links are successively connected through intermediate bins, and each V-psec on each link is provided.
A pair of Vs with grooves on each outer periphery that engage with each V block
A type in which the V-belt is stretched between pulleys is known, but in this case, the V-belt is subjected to centrifugal force to reduce the contact pressure and contact length with each V-pulley, thus increasing the slip ratio. It comes with the inconvenience of winning.

The purpose of this invention is to obtain a device that does not have such inconveniences, and consists of an endless link chain in which a large number of links are successively connected at intermediate bins, and one for each link on each link. In a type in which a link-type V-belt comprising V-blocks is stretched between a pair of V-L belts having V-grooves on each outer periphery that engage with each V-block, each V-block is attached to each bin. It is characterized by being provided deviated inward in the radial direction.

An example of the implementation of the present invention will be explained with reference to the attached drawings.

In the drawing, (1) shows an endless link chain, and the cough chain (1) is formed by sequentially connecting a large number of metal links (2) with each middle bottle (31), and each chain (1) is connected to the chain (1). Link (2)
Each of the upper V blocks (4) is configured as a whole into an endless link type V belt (5), which has a V groove (6) on each outer periphery that engages with each V block (4). A pair of V-pulleys (7N71 are stretched between them. In the illustrated example, the V-pulleys (71+71' are left and right as a pair, and the left side is the drive side and the right side is the heartbeat side.

Although the above is not particularly different from the conventional one, according to the present invention, each V block (41?) is provided to be offset radially inward with respect to each corresponding bin (3). For example, it is clearly shown in FIG. , each bin (3)
flax-x, which connects the centers of , and I!, which connects the centers of each V block +41. Y-Y is the deviation length! To explain the operation, each V pulley (71+71 is the first
Rotate in the direction of the arrow in the figure and apply the voltage between both pulleys (71+71)
(5) Power is transmitted through the V-belt (5), which extends between both pulleys (7H71). , that is, each link (2312) between the left end and right end of the upper rod part in the drawing.
As clearly shown in the figure, the leftmost link +21 t! The V groove (6) of the V pulley (7) in the lower V block (41)
), and a driving force p2 is applied to the left in the drawing, and a tension force Pt of the cough V-belt (5) is applied to the line connecting these at the upper left and right bins 131+31, and the points of application are mutual. The link (2) is deflected with a deflection length Jt-1, so that the link (2) is subjected to a moment pt I+ in the clockwise direction in the drawing, i.e., the link (2) exerts a tilting force in the clockwise direction in the drawing. is applied to the winding side of the V-pulley (7). This is almost the same for the rightmost link (2).
The link (2) is the moment p, j in the opposite direction 1, that is, counterclockwise? be acted upon. That is, the link (2) is subjected to a tilting force in the counterclockwise direction as shown in the drawing, and the V pulley (7)
Thus, as a whole, the upper rod part of the V-belt (5) is as shown in Figure 5, that is, its center line is directed toward its outer side by centrifugal force. line B
According to the L7t moment mentioned above, it becomes the ma side on the inside, thus each V boo! j (7071) is applied on the winding side, that is, on the side where the contact length and contact pressure increase.

Thus, according to the present invention'! In addition, the V-belt between a pair of V-boolis is subjected to an inward tilting force at each end of the V-belt. It is sufficient to provide the blocks deviated inward in the radial direction with respect to each bottle, which is simple and can be obtained at low cost.

[Brief explanation of drawings]

Fig. 1 is a side view of an example of the device of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a side view illustrating its operation, and Fig. 4 is an enlarged view of a part of the V-belt. FIG. 5 is a plan view, FIG. 5 is a side view, and FIGS. 6 and 7 are cross-sectional views taken along lines M-w and -■. (1)...Link chain (2)...Link (3
)...Bin (4)...V block (5)...
V belt +6)...V groove (7)...V pulley
l...deviation length

Claims (1)

[Claims] An endless link chain consisting of a plurality of links sequentially connected at intermediate bins is connected to a link-type V-belt comprising each V-block on each link, and a link-type V-belt comprising each V-block on each link is attached to each outer circumference that engages each V-block. 1. A link-type V-belt device that is stretched between a pair of V-boleys having a V-groove and is characterized in that each V-block is provided so as to be deviated inward in the radial direction with respect to each bottle.