JPS6158687B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a metal V-belt type power transmission device.

The applicant of the present application has previously developed a device of this type in which a plurality of V-shaped metal members and a plurality of elastic metal members are brought into contact with each other on a metal belt member made of an endless steel strip or the like. A type in which the belts are arranged alternately to form a V-belt as a whole, and this belt is stretched between a V-pulley on the driving side and a V-pulley on the driven side to transmit power between both pulleys. In this step, each elastic metal member is formed into a hollow roller, which is engaged with each concave surface of the opposing surfaces of the pair of V-shaped metal members on both outer sides, and tightened from the outer periphery with the metal belt member. proposed a method in which each V-shaped metal member is connected to the metal belt member via each elastic metal member, but in this case, the mutual connection between each V-shaped metal member and the metal belt is There is a need to further increase the

The object of the present invention is to obtain a device that meets such requirements, in which a plurality of V-shaped metal members and a plurality of elastic metal members are attached to a metal belt member made of endless steel strip or other material. are arranged alternately in contact with each other to form a V-belt as a whole, which is stretched between a V-pulley on the driving side and a V-pulley on the driven side to transmit power between the two pulleys. Further, each of the elastic metal members is formed into a hollow roller, which is engaged with each concave surface formed on the opposing surfaces of the pair of V-shaped metal members on both outer sides, and the metal belt member is In the type in which each V-shaped metal member is fastened onto the metal belt member by tightening from the outer periphery, each V-shaped metal member is provided with a stopper member facing the outer peripheral surface of the metal belt member. The V-shaped metal member is fixed onto the metal belt member by pressing the stopper member onto the outer peripheral surface.

Embodiments of the present invention will be described with reference to attached drawings.

In the drawing, reference numeral 1 indicates a continuously variable transmission for a vehicle, and the transmission 1 has a V-belt 6 stretched between a V-groove 3 of a V-pulley 2 on the driving side and a V-groove 5 of a V-pulley 4 on the driven side. It consists of a type in which power is transmitted between both pulleys 2 and 4.

The V-belt 6 includes a plurality of V-shaped metal members 8 and a plurality of elastic metal members 9 which are alternately arranged one after another in contact with each other on a metal belt member 7 consisting of a plurality of endless steel strips. In this case, each elastic metal member 9 is constituted by a hollow roller, and each elastic metal member 9 is configured to have a circular arc shape formed on the opposing surfaces of each pair of V-shaped metal members 8, 8 on both outer sides thereof. The belt member 7 is engaged with the concave surfaces 10, 10 and tightened from the outer periphery by the metal belt member 7. According to the tightening, the belt member 7 is connected to each elastic metal member 9 and, via this, to each V-shaped metal member 8. This provided a mutual bond between members 7, 9 and 8. In other words, each V-shaped metal member 8 is positioned and fixed on the belt member 7, and when rotated by engagement with the drive-side V pulley 2, the belt Along with this, the member 7 is subjected to a driving force on the tensile side.

Each V-shaped metal member 8 is made of a relatively thick plate-like block, and is provided with a generally U-shaped groove 11 that opens outward.
so that it can be inserted into.

In this case, the height position of the belt member 7 is approximately at the center of the engagement surfaces with the respective pulleys on both sides of the V-shaped metal member 8.

Although the above is not particularly different from what was proposed earlier, according to the present invention, the belt member 7 is attached to the V-shaped metal member 8.
The V-shaped metal member 8 is fixed onto the belt member 7 by pressing the stopper member 12 against the outer peripheral surface of the belt member 7. This strengthens the binding caused by the tightening in step 7. In other words, each V-shaped metal member 8 is fixed stably on the belt member 7 by being fastened by the tightening of the belt member 7 and fastened by pressure contact by the stopper member 12. did. The stopper member 12 is inserted into and engaged with a pair of left and right engagement grooves 13, 13 in the upper part of the above-mentioned concave groove 11.
A convex surface 14 having an arcuate cross section is provided at the tip thereof, and the convex surface 14 is pressed against the outer circumferential surface of the belt member 7.

In the ones shown in FIGS. 1 to 5, each stopper member 12 is of a type in which it is always in pressure contact with the outer peripheral surface of the belt member 7, but this is different from the type in which it is not always in pressure contact as shown in FIGS. 6 and 7, for example. It is possible to do so. That is, in the case shown in FIGS. 6 and 7, the stopper member 12 is allowed to move slightly up and down within the left and right engaging grooves 13, 13, and is not pressed against the belt member 7 at the straight portion of the V-belt 6. At the same time, the tail end 12a of the member 12 extending rearward extends from the top of the V-shaped metal member 8 rearward to the inner surface of the seat members 8a, 8a extending forward,
Thus, for example, when each V-shaped metal member 8 sequentially engages with the V-pulley 2 and tilts as shown clearly in FIG. The member 12 is brought into contact with the belt member 7 and tilted downward as viewed in the drawing, so that the convex surface 14 of the member 12 is pressed against the belt member 7 . More specifically, the member 12 is tilted downward in the drawing with a point A at the tip as an axis, and is pressed onto the belt member 7 at a point B on the convex surface 14;
In this way, the V-shaped metal member 8 was brought into a state of being bound onto the belt member 7 by the pressure welding.

In this way, according to the present invention, each V-shaped metal member is tied onto the belt member by both tightening from the outer periphery of the metal belt member and pressure contact of the stopper member, unlike the conventional tightening only. It has the effect of increasing the binding compared to the conventional method.

[Brief explanation of the drawing]

FIG. 1 is a side view of one example of the device of the present invention, FIGS. 2 and 3 are enlarged cross-sectional views taken along the - line and - line, and FIG. 4 is an enlarged cut-away side view of the drive V pulley portion. Figure 5 is an exploded slope view of a part of it.
FIG. 6 is a cutaway side view of a portion of the modified example, and FIG. 7 is a plan view thereof. 2... Drive V pulley, 4... Driven V pulley, 6
...V belt, 7...Metal belt member, 8...V
shaped metal member, 9... elastic metal member, 10, 10...
...Concave surface, 12...Stopper member.

Claims (1)

[Scope of Claims] 1. A metal belt member made of an endless steel band or the like, in which a plurality of V-shaped metal members and a plurality of elastic metal members are sequentially and alternately arranged in contact with each other, and A V-belt is constructed as a V-belt, which is stretched between a V-pulley on the driving side and a V-pulley on the driven side to transmit power between both pulleys, and each elastic metal member is constructed as a hollow roller. This is engaged with each concave surface formed on the opposing surfaces of each pair of V-shaped metal members on both outer sides, and tightened from the outer periphery with the metal belt member to tighten each V-shaped metal member to the metal belt member. In the V-shaped metal member, each V-shaped metal member is provided with a stopper member facing the outer peripheral surface of the metal belt member, and the stopper member is pressed against the outer peripheral surface of the metal belt member. Applicable V
A V-belt transmission device characterized in that a shaped metal member is fixed onto the metal belt member. 2. The V-belt transmission device according to claim 1, wherein the stopper member has an arcuate convex surface and is pressed against the outer peripheral surface of the metal belt member at the convex surface. 3. The V-belt transmission device according to claim 1, wherein the stopper member is clamped and pressed together with each elastic metal member to the outer peripheral surface of the metal belt member. 4. The stopper member engages with the seat member at the outer end of the rear V-shaped metal member at its tail end extending rearward, and engages with the V-pulley on the driving side of the V-shaped metal member to stop the seat. The V-belt transmission device according to claim 1, wherein the V-belt transmission device is tilted by being pushed by a member and is pressed against the outer circumferential surface of the metal belt member.