JPH0237308Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a V-belt for power transmission used in continuously variable transmissions for vehicles, etc., especially an endless metal belt with an outward opening that abuts from the inside. A plurality of V-shaped metal members each having a groove formed therein are arranged in series in the longitudinal direction of the metal belt, and a stopper member for preventing the metal belt from slipping out of the groove is attached to each of the V-shaped metal members. This invention relates to a V-belt for power transmission that is fitted from the outside and constitutes a V-belt as a whole.

(Prior art) In Utility Model Application Publication No. 79038/1988 proposed earlier by the present applicant, a V-shaped metal member having an outwardly opening concave groove abutting from the inside against an endless metal belt was proposed. A plurality of stopper members are arranged in series in the longitudinal direction of the metal belt, and a stopper member for preventing the metal belt from slipping out of the groove is fitted from the outside to each of the V-shaped metal members, and each of the V-shaped metal members Disclosed is a V-belt transmission device in which roller members located inside the metal belt are inserted between metal members to form a V-belt as a whole, and this is stretched between V-pulleys on a driving side and a driven side. be done.

Conventionally, as shown in FIG. 7, a V-shaped metal member 7
L-shaped grooves 71, 71 in side view are formed in the left and right shoulder portions of the rod, and left and right L-shaped portions 8 of the round bar-shaped stopper member 8 as shown in FIGS.
1.81 was fitted.

(Problem to be Solved by the Invention) However, since the intermediate portion of the stopper member 8 is provided with a curved portion 83 in the longitudinal direction of the belt that has a spring action, when the stopper member 8 is attached to the V-shaped metal member 4, the right and left There was a problem that it was difficult to open the L-shaped parts 81, 81 laterally.

It is also possible to install it without opening it in the horizontal direction, but as shown in Figure 8a, the L-shaped part 81
If an upwardly folded portion 82 is provided at the tip of the stopper member 8, the L-shaped portion 81 of the stopper member 8 is first moved along the L-shaped groove 71 of the V-shaped metal member 7 in the belt vertical direction, and then It is necessary to move the belt in the front-back direction. If the stopper member 8 as shown in FIG. 8b without the folded portion 82 is adopted, the L
Although it can be attached simply by moving the shaped part 81 in the belt front-back direction with respect to the L-shaped groove 71, in either case, it can be attached with one touch from above to a large number of V-shaped metal members arranged in series on the metal belt. I couldn't do it.

(Means for solving the problem) In order to solve the problem, the present invention provides a V-shaped metal member having an outwardly opening groove 42 that contacts the endless metal belt 3 from inside. A plurality of V-shaped metal members 4 are arranged in series in the longitudinal direction of the metal belt 3, and a stopper member 6 for preventing the metal belt 3 from slipping out of the groove 42 is fitted into each of the V-shaped metal members 4 from the outside. In the V-belt 2 for power transmission, which has a V-belt as a whole, locking grooves 46, 46 are formed on both side surfaces above the V-side surfaces 41, 41 of the V-shaped metal member 4. 46, 46, locking portions 63, 63 that fit from the outside to the V-shaped metal member 4 are formed at both ends of the stopper member 6 in the belt width direction. A curved portion 64 having a spring action and bending either inwardly or outwardly is formed in the middle portion.

Specifically, when the metal belt 3 moves relatively upward in the groove 42 of the V-shaped metal member 4, the metal belt 3 comes into contact with the curved portion 64 of the stopper member 6, and both ends of the stopper member 6 In order to prevent the gap between the locking portions 63, 63 of the portion from widening, the curved portion 64 is formed inward to face the inside of the groove 42.

Further, a stopper portion 67 that can come into contact with the front or rear surface of the V-shaped metal member 4 is formed at at least one of both ends of the stopper member 6 in the belt longitudinal direction.

Note that the stopper member 6 is formed from a plate material.

(Function) The stopper member 6 connects the locking portions 63, 63 that fit into the left and right locking grooves 46, 46 of the V-shaped metal member 4 from the outside to both ends in the belt width direction. Each stopper member 6 can be easily attached from above with one touch to each of a large number of V-shaped metal members 4 arranged in series on the metal belt 3 in order to prepare for the .

If the curved part 64 having a spring action at the middle part of the stopper member 6 is formed downward and faces into the groove 42 as in the embodiment, the metal belt 3 can move upward in the groove 42. Conversely, when the V-shaped metal member 4 moves downward with respect to the metal belt 3, the outer peripheral surface 32 of the metal belt 3 comes into contact with the curved part 64 and presses it upward. Due to the spring action accompanying the deformation, the gap between the left and right locking portions 63, 63 of the stopper member 6 is biased in the direction of narrowing. Therefore, the fitting state between the locking groove 46 and the locking portion 63 becomes stronger.

Furthermore, if the stopper member 6 is provided with stopper parts 67 and 68 that can come into contact with the front and rear surfaces of the V-shaped metal member 4,
It is possible to position the V-shaped metal member 4 while preventing the stopper member 6 from shifting in the belt longitudinal direction.

(Example) Examples will be described below based on the accompanying drawings.

In FIGS. 1 to 3, reference numeral 1 indicates a V-pulley on the driving side, and a V-belt 2 is stretched between this V-pulley 1 and the V-pulley on the driven side to perform power transmission.

The V-belt 2 is formed by arranging a large number of V-shaped metal members 4 in series along the longitudinal direction on an endless metal belt 3 formed by laminating a plurality of steel band belt members. The V-shaped metal member 4 is made of a sintered alloy, and has V side surfaces 4 on both left and right sides that contact the V groove 11 of the V pulley 1.
1 and 41, and an outwardly opened groove 42 that contacts the metal belt 3 from inside, and the metal belt 3 is stored in the groove 42.

Further, between the V-shaped metal members 4..., roller members 5... located inside the metal belt 3 are inserted, and each of the V-shaped metal members 4... is inserted outside the metal belt 3. Then, stopper members 6 for preventing the V-shaped metal members 4 from coming off inward of the belt are respectively attached. Further, each V-shaped metal member 4 has arc-shaped concave surfaces 44 and 45 for receiving the roller member 5 on the front and rear surfaces in the belt longitudinal direction.

Therefore, the V side surfaces 41, 41 of the V-shaped metal member 4 are V-shaped.
When press-fitted into the V-groove 11 of the pulley 1, the bottom surface 43 of the groove 42 is pressed against the inner peripheral surface 31 of the metal belt 3, and the V-belt 2 maintains an appropriate clearance between the V-shaped metal members 4. Rotate.

In the above, both upper side surfaces of the left and right V side surfaces 41, 41 of the V-shaped metal member 4 are shown in FIGS. 1 and 3.
As shown in the figure, locking grooves 46, 46 are formed in the belt longitudinal direction located inward from the outer circumferential surface 32 of the metal belt 3, and on the left and right upper front surfaces of the groove 42 of the V-shaped metal member 4, and Concave stepped surfaces 47, 47 are formed above the locking grooves 46, 46.

On the other hand, the stopper member 6 is constructed by press-forming a thin metal plate as shown in detail in FIGS. 4 to 6. That is, the substrate 61 of the stopper member 6 has approximately the same dimensions as the upper surface of the V-shaped metal member 4, and the substrate 61
Side pieces 62, 62 bent downward are formed at both ends in the belt width direction, and the side pieces 62, 6
The locking grooves 46, 4 are bent inwardly at the lower end of 2.
Locking portions 63, 63 are formed to fit into the inside of the locking portion 6.

A curved part 64 having a spring action that bulges out downward and has a U-shape when viewed from the front is formed at the middle part of the base plate 61 in the belt width direction, and at the front and back of this curved part 64 in the belt longitudinal direction, the center part The concave notches 65 and 66 are formed so as to be uniformly narrow from the bottom.
In this way, the stopper member 6 is formed into an M shape when viewed from the front.

Further, on the left and right sides of the U-shaped curved portion 64, front stopper portions 67, 67 are bent downward from the substrate 61 and abut against the concave stepped surfaces 47, 47 on the front surface of the V-shaped metal member 4.
Then, rear stopper portions 68, 68 which come into contact with the rear surface of the V-shaped metal member 4 are formed.

The stopper member 6 described above consists of a large number of V-shaped metal members 4 arranged in series on the metal belt 3...
The left and right locking portions 63, 63 are aligned with the locking grooves 46, 4 by simply moving them vertically from above.
6, so it can be easily installed with one touch. At the same time, the front and rear stopper portions 67, 67, 68, and 68 come into contact with the concave step portions 47, 47 on the front surface and the rear surface of the V-shaped metal member 4, respectively, and are in a covered state.

Here, the left and right side pieces 62, 6 of the stopper member 6
2, the front and back width of the board 61 is narrower at the center, so that it can be easily opened outward during installation.

When the V-belt 2 is in use, the U-shaped curved portion 64 at the intermediate portion of the stopper member 6 faces into the groove 42 of the V-shaped metal member 4, and the gap between the bottom of the curved portion 64 and the metal belt 3 is small. , or because the metal belt 3 is set to slightly contact with the bottom of the curved portion 64, when the metal belt 3 moves relatively upward in the groove 42, the outer peripheral surface 32 of the metal belt 3 contacts the bottom of the curved portion 64, and It will push it up. As a result, the spring action generated by the upward deformation of the curved portion 64 biases the left and right locking portions 63, 63 of the stopper member 6 in the direction of narrowing (in the pinching direction), so that they engage with the locking groove 46. The fitted state with the stop portion 63 is maintained more firmly.

Furthermore, since the stopper member 6 is obtained by press-molding a metal plate, it is easy to mold.

By the way, the present invention is not limited to the illustrated embodiment, and various other embodiments are possible within the scope of the present invention.

For example, the stopper member may be formed from a round bar, and only one of the front and rear stopper parts may be used.

(Effect of the invention) As described above, according to the invention, it is possible to easily attach the stopper member to each of the V-shaped metal members arranged in series on the metal belt with one touch from above. Therefore, it is possible to improve the ease of assembly.

[Brief explanation of the drawing]

Fig. 1 is a partially broken side view showing a part of the V-belt transmission device, Fig. 2 is a plan view thereof, Fig. 3 is a sectional view taken along the line shown in Fig. 1, and Fig. 4 is a single piece of the stopper member according to the present invention. 5 is a side view, FIG. 6 is a partially cutaway front view along the line of FIG. 4, FIG. 7 is a perspective view of a conventional V-shaped metal member, and FIGS. 8 a and b are a conventional FIG. 3 is a perspective view showing two examples of stopper members. In addition, in the drawing, 1 is a V-pulley, 2 is a V-belt, and 3 is a V-pulley.
4 is a metal belt, 4 is a V-shaped metal member, 41 is a V-shaped side surface, 42 is a concave groove, 46 is a locking groove, 5 is a roller member, 6 is a stopper member, 63 is a locking portion, 64 is a curved portion, 65, 66 is a notch, and 67 and 68 are stopper portions.

Claims (1)

[Claims for Utility Model Registration] (1) A large number of V-shaped metal members each having an outwardly opening groove that abuts from the inside on an endless metal belt are arranged in a row in the longitudinal direction of the metal belt. A V-belt for power transmission, in which a stopper member for preventing the metal belt from slipping out from the groove is fitted from the outside to each of the V-shaped metal members, and the V-belt is configured as a whole. A locking groove is formed on both upper side surfaces of the V-shaped metal member, and a locking portion that fits into the V-shaped metal member from the outside is inserted into the locking groove in the belt width direction of the stopper member. A V for power transmission characterized in that a stopper member is formed at both ends, and a curved part having a spring action and curved inward or outward is formed in the middle part of the stopper member in the belt width direction.
belt. (2) When the metal belt moves relatively upward in the groove of the V-shaped metal member, the metal belt comes into contact with the curved part of the stopper member, and the gap between the locking parts at both ends of the stopper member is reduced. A V-belt for power transmission according to claim (1) of the utility model registration, in which a curved portion is formed inward and faces into the groove in order to prevent the belt from opening. (3) Utility model registration claims (1) or (2) in which at least one of the ends of the stopper member in the longitudinal direction of the belt is formed with a stopper portion that can come into contact with the front or rear surface of the V-shaped metal member. V-belt for power transmission as described in ). (4) The V-belt for power transmission according to any one of claims (1) to (3), wherein the stopper member is formed from a plate material.