JPS59194145A - V-belt transmission device - Google Patents

Abstract

PURPOSE:To make it possible to simplify the efficiency of assemblying of a V-belt, by providing such an arrangement that a stopper member is press-fitted into a recessed groove in each V-shape metal member to maintain a predetermined regular groove-width, and a come-off preventing clip is set outside of the stopper member. CONSTITUTION:A V-belt is formed such that an endless metal belt 3 is fitted in recessed grooves 5 in V-shape metal members 4 between which resilient metal members 6 each composed of a hollow roller are held, and these members 4, 6 are fastened from the outside thereof by the metal belt 3 so that binding due to press-contact may be given to them 3, 4, 6 therebetween. Further, a come-off preventing clip 8 having resiliency is set in the recessed groove 5 of each V- shape metal member 4 in a position outside of a stopper member 7. With this arrangement, the efficiency of assemblying may be remarkably enhanced.

Description

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

Conventionally, this type of device has been constructed by fitting a large number of V-shaped metal members onto an endless metal belt to form a V-belt as a whole, which is stretched between V-boots on the driving side and the driven side to generate power. There are known devices in which transmission is carried out, and furthermore, devices in which elastic metal members are inserted between the V-shaped metal members.

In this case, if the structure is such that the center position in the height direction of the pulley contact surface of the V-shaped metal member and the center position of the metal belt approximately coincide, the belt will transition from the rotation area of the V-pulley to the linear movement area between both pulleys. This has the advantage of reducing the speed difference between the V-shaped metal member and the metal belt when moving, and reducing the loss due to sliding friction between the two in the linear movement region. Because I'm coming to
The concave groove into which the metal belt is inserted is formed as a deep groove that goes inside the center of the V-shaped metal member, and the lateral rigidity of the ■-shaped metal member is insufficient, reducing the pressure force between it and the V pulley. accompanied by inconvenience.

An object of the present invention is to eliminate such inconveniences and to provide an easy-to-assemble device, in which a large number of V-shaped metal members are formed on an endless metal belt. In a V-belt transmission device, the V-belt is fitted into an outwardly opening concave groove to form a V-belt as a whole, and the V-belt is stretched between two pulleys on the driving side and the driven side.
A stopper member of the metal belt is press-fitted into the open end of the groove so that the stopper member maintains the groove width of the groove at a regular size, and the stopper member is fitted into the groove. A feature is that a retaining clip is provided on the outside and has a spring action.

The second aspect of the present invention is that when the elastic metal members are inserted between the ■-shaped metal members, gaps are created between the V-shaped metal members and the V-shaped metal members tend to fall down. ,
The object of the present invention is to provide a device in which a stopper member can prevent the fall of the stopper member, and the stopper member is formed with a protrusion that protrudes into the gap between the V-shaped metal members, and each V-shaped metal member is It is characterized in that the shaped metal members are brought into contact with each other at the protruding portions to prevent them from falling down.

Next, the present invention will be explained with reference to the illustrated embodiments.

Referring to FIGS. 1 to 3, (1) shows a V-pulley on the driving side, and a V-belt (2) is stretched between the pulley (1) and a V-boot on the driven side (not shown). Here, the V-belt (2) is a metal belt (3) made of an endless steel band or the like, and a plurality of V-shaped metal members (4) are attached to each of the V-shaped metal members (4). An elastic metal member (6) consisting of a hollow roller is inserted between each V-shaped metal member (4) and inserted into a concave groove (5) that opens outward (upward in the drawing) formed in the member (4). ) are inserted, and each of these members (41Fe2 is inserted from the outside of the metal bell) (
3), and from the tightening, these three people (31 (4)
1161 are bonded by mutual pressure contact.

Each V-shaped metal member (4) has a V-groove (1) of a V-pulley (1).
a) at its lateral oblique contact surfaces (4a) (4a), and is firmly frictionally coupled to the metal belt (3) by the outward press-in reaction force acting at that time, and the metal belt (
3) to the pulley (1) via each V-shaped metal member (4).
In this case, the concave groove (5) is placed on the contact surface so that the center position of the metal belt (3) and the center position in the height direction of the contact surface (4a) are approximately equal. (4
The contact surface (4a) is formed deeper than the center position in the height direction of a), but according to this, the contact surface (4a) overlaps with the groove (5).
Due to lack of lateral rigidity, the outer half of the pulley (1) will fall to the side when pressed into the pulley (1), making it impossible to obtain sufficient contact force.

Therefore, according to the present invention, the stopper member (7) of the metal belt (3) is press-fitted into the open end of the groove (5),
The stopper member (7) allows the groove width of the groove (5) to be maintained at a regular size, and according to this, the groove width of each V-shaped metal member (4) to the V pulley (1) When the contact surface (4a) is press-fitted, the outer half of the contact surface (4a) that overlaps with the groove (5) does not fall inward, so that the contact surface (4a) is fully connected to the V of the pulley (1). It is pressed into contact with the groove (1a), and no sliding loss occurs between the pulley (1) and the V-shaped metal member (4).

Furthermore, according to the present invention, the stopper member (
7) A retaining clip (with spring properties) located on the outside of the
According to this, the stopper member (4) is provided.
) into the concave groove t51 from the outside, that is, from the top in the drawing, the clip (8) reliably prevents it from falling off, and the clip (8) itself can also be assembled due to its spring properties. This can be done from the outside of the groove (5), and it becomes possible to assemble both the stopper member (7) and the clip (8) from the outside of the groove Nt5r, and they are attached to the metal belt. (3) The ease of assembly is significantly improved compared to those that are assembled from the longitudinal or diagonal directions.

In the above embodiment, the stopper member (7) is elastically engaged between the engagement grooves (9) formed on the inner surfaces of the groove walls (5a) on both sides of the groove (5). Although it is composed of a F-shaped rod-shaped elastic member that can be stopped, it is not limited to this.
For example, it may be constructed of a leaf spring as shown in FIGS. 4 and 5.

Furthermore, when the elastic metal member (6) is inserted between the V-shaped metal members (4) as in the above embodiment, the elastic metal member (6) is inserted between the V-shaped metal members (4) in the linear movement region of the belt. This may fall down unnecessarily due to the play in the outer part of the stopper member (7).Therefore, according to the feature of the second invention, the stopper member (7) is provided with a protrusion into the gap between the V-shaped metal members (4). A protrusion (7a) is formed, and each V-shaped metal member (
4) are brought into contact with each other at the protrusion (7a) to prevent them from falling down.

To explain this in more detail, the stopper member (
7) shall be provided with protrusions (7a) (7a) on both front and rear sides that protrude from the groove (5) in the longitudinal direction of the metal belt (3), and both protrusions (7a) on both lateral ends thereof. (7*
) are formed, and each recessed recess (7b) is connected to each groove wall portion (5a) of the recessed groove (5).
) is press-fitted into the recessed groove (5), and adjacent V-shaped metal members (41 (4) in the linear movement area of the bell Y
) (7) The protrusions (7a) (7a) are brought into contact with each other.

As described above, according to the present invention, even if the groove is formed deep so that the center position in the height direction of the pulley contact surface of the V-shaped metal member and the center position of the metal belt approximately coincide, the groove of the groove is The width is maintained at a regular size by a stopper member that is press-fitted to the open end, and the outer half of the pulley contact surface that overlaps with the groove is also securely pressed against the V-groove of the boob.
The power transmission efficiency is improved; and the stopper member is prevented from coming out of the groove by a clip having spring properties on the outside thereof, and the stopper member is easily press-fitted into the groove from the outside. Even if the V-belt has a different shape, the stopper member and the clip will not fall off, and the V-belt can be easily assembled by sequentially assembling the stopper member and the clip into the groove from the outside. According to the invention, in an apparatus in which an elastic metal member is inserted between V-shaped metal members, a protrusion is formed on the stopper member to protrude into a gap between the V-shaped metal members, and each of the V-shaped metal members is The V-shaped metal members come into contact with each other at the protruding portions and are prevented from falling down, which has the effect of ensuring smooth and reliable power transmission and ensuring the assembly position of the V-shaped metal member and the stopper member.

[Brief explanation of the drawing]

Fig. 1 is a cutaway side view of one example of the device of the present invention, and Fig. 2 is a cutaway side view of an example of the device of the present invention.
■-π line cutting diagram of the figure, No. 3 top view of the masonry, No. 4
The figure is a cutaway front view of another embodiment, and FIG. 5 is a plan view thereof. (1)...V 7' -IJ (2)...V belt (3)...Metal bell) (4)...V-shaped metal member (5)...Concave groove (6)・・Elastic metal member (
7)...Stopper member (8)...Clip outside 2
given name . Ward r yo 0 JP-A-59-194145 (4) 1□

Claims (1)

[Scope of Claims] 1. A plurality of V-shaped metal members are fitted onto an endless metal belt in grooves that open outward, respectively, formed in the V-shaped metal member to form a V-belt as a whole. In a V-belt transmission device in which this metal belt is stretched between V-boolis on the drive side and the driven side, a stopper member of the metal belt is press-fitted into the open end of the groove, and the s) A V-belt transmission characterized in that the groove width of the concave groove is maintained at a regular dimension by a member, and a retaining clip having a spring action is provided on the gate structure and is located outside the stopper member. Device. 2. A plurality of V-shaped metal members are fitted onto an endless metal belt in grooves that open outwardly formed in the V-shaped metal members, and an elastic metal member is inserted between the V-shaped metal members. This is a V-belt transmission device in which the V-belt is constructed as a whole by inserting each V-belt, and the V-belt is stretched between the V-boolis on the driving side and the driven side, and the metal belt is inserted into the open end of the groove. A stopper member is press-fitted so that the width of the groove is maintained at a regular dimension by the stopper member, and a retainer is located outside of the stopper member in the groove and has a spring action. In the device provided with a clip, the stopper member is formed with a protrusion that protrudes into the gap between the V-shaped metal members, and the V-shaped metal members are brought into contact with each other at the protrusion to prevent the V-shaped metal members from falling. A V-belt transmission device characterized in that it prevents