JPS6078134A - V-belt transmission device - Google Patents

Abstract

PURPOSE:To increase the transmission capacity while to lengthen the service life by partially welding at least two innermost metal belt members thereby distributing tension to be applied onto them. CONSTITUTION:V-belt assembly A is constructed by fastening a plurality of V-shaped metal member 2 and intermediate member 4 arranged alternatively from the outercircumference by means of a metal belt 1. Metal belt 1 is made by laminating a plurality of thin metal belt members, and in order to reinforce the innermost metal belt member pressure contacting with an engaging groove in said member 2, at least two innermost members are partially welded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a V-belt transmission device used in continuously variable transmissions for vehicles and the like.

The applicant of this application has previously developed an endless metal belt made of a plurality of relatively thin metal belt members as a device of this type.
A large number of shaped metal members are inserted through each engagement groove and arranged at appropriate intervals, and a hollow roller or other intermediate member is fitted inside each interval. We have proposed a type in which the entire V-belt assembly is constructed, and this is stretched between a pair of V-belts to transmit power.In this case, the metal belt is Among the plurality of metal belt members, the innermost one is press-fitted and engaged with the bottom surface in the engagement groove of each trapezoidal metal member, and a tensile force is applied thereto via the bottom surface. In such a belt, the innermost sheet is appropriately reinforced to withstand a relatively large tensile force, thereby increasing the transmission torque capacity and service life of the belt as a whole. It is preferable to do so.

The object of the present invention is to obtain a device that meets these requirements.The present invention has an endless metal belt formed by polymerizing a plurality of relatively thin metal belt members, and a large number of V-shaped metal members. The belts are inserted through each engagement groove and arranged at appropriate intervals, and hollow rollers and other intermediate members are fitted inside the belt within each interval to form a belt assembly as a whole. In a type in which the metal plate is stretched between a pair of V-booys to transmit power between the two, a plurality of the metal plate members are connected at least to the innermost two. They are characterized by being partially welded together to bind them together.

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

In the drawing, (1) indicates an endless metal belt, and the belt (1) indicates an endless metal belt.
For example, as clearly shown in FIGS. 2 and 3, belt 1) is made in a multi-layered manner by polymerizing a plurality of relatively thin metal belt members (1a), and the belt (1) has a V A large number of shaped metal members (2) are inserted through each engagement groove (3) and arranged at appropriate intervals, and the belt (1) is inserted into each engagement groove (3) and arranged at appropriate intervals.
) located inside the hollow roller and other intermediate members (4)
A method in which a large number of members (2) and a large number of members (4) are sequentially and alternately arranged as a whole, and the metal belt (1) is tightened from the outer periphery. A V-belt assembly A was constructed, and this was stretched between a pair of V-boots 9+51 (51) to transmit power.

The above is not particularly different from the conventional one; in this case, the metal belt (1) is the metal belt member (1) constituting it.
1 &), each V in the innermost one
The shaped metal member (2) is to be press-fitted with the bottom surface in the engagement groove (3) and a tensile force is applied by the bottom surface, and according to the present invention, the innermost one is reinforced. At least the two innermost sheets are joined together by partial welding.

To explain this in more detail, for example, in the case of the innermost two sheets,
For example, the two sheets are (1!L) (1
As shown in a), the two pieces (1a) (1a) are welded and bonded to each other at multiple locations at appropriate intervals, for example, at locations a, ~machi, in the plan, and thus the two pieces (1a) )
(1a) functions together with each other to increase the tensile strength against the above-mentioned tensile force, while the binding is at multiple locations at appropriate intervals, so the two sheets ((1a) in 1) are the entire body. The bendability is not impaired as shown in Fig.
It consists of welding over the entire width at No. 4, and welding approximately half the width in the middle at each of the remaining locations, and these shall be selected and employed as appropriate. Each sheet is prepared in advance as a straight strip, and its both ends are welded together to form an endless shape. It is preferable that the welding point (1b) of one sheet (1a) is located at opposite positions, for example, as shown in the figure.

In addition, in the drawing, the innermost two sheets (1a) (1a) are partially welded to each other, but the innermost five sheets (1a) (F
a) There is no problem in regarding (1a) as being substantially the same.
Furthermore, it is also possible to do substantially the same for each of the two or five of the outer sheets.

In this way, according to the present invention, at least two of the innermost members of the plurality of metal belt members constituting the metal belt are partially welded and bound to each other, and the actuator acts on the innermost one member. The tensile force applied to the belt is distributed between the two belts and can withstand a relatively large tensile force, and the belt as a whole can greatly increase its transmission torque capacity and its service life. Since it is partially welded, the bendability is not impaired, and the operation is smooth and stable.

[Brief explanation of drawings]

Fig. 1 is a side view of one example of the device of the present invention, Figs. 2 and 3 are cross-sectional views taken along the lines A side view, and FIG. 5 is a bottom view thereof. (1)...Metal, (1a)...Metal belt member (2)...V-shaped metal member (3)...Engagement 7
1'J groove (4)...Intermediate member (5X51...V
Pulley a, ~ a14... welding location

Claims (1)

[Scope of Claims] 1. An endless metal belt formed by overlapping a plurality of relatively thin metal belt members, and inserting a large number of V-shaped metal members through each engagement groove at appropriate intervals. and hollow p-ra and other intermediate members positioned inside the belt within each interval to form a V-belt assembly as a whole, which is stretched between a pair of V-boolis. In the metal belt member, the plurality of metal belt members are partially welded to each other at least at the innermost two members to connect the metal belt members to each other so as to transmit power between them. V-belt transmission device. 2. The V-belt transmission device according to claim 1, wherein the plurality of metal belt members are bonded together by partially welding at least every two sheets of the metal belt member to each other.