JPS62151644A - V-belt for power transmission - Google Patents

Abstract

PURPOSE:To make up for insufficient lubrication by oil under high surface pressure and to prevent abrasion and early fatigue by providing a lot of V-shaped metallic members in the longitudinal direction of a metallic belt, and forming a solid lubricating film on the laminated metallic belt. CONSTITUTION:A V-belt 2 comprises an endless metallic belt 3 formed by stacking a plurality of band steel belt members 3a, 3c,...3n in layers and a lot of V-shaped metallic members 4 connected and disposed on the metallic belt 3 in the longitudinal direction. A thin-film solid coat 7 having lubricating ability is placed in contact with the surface of the laminated metallic belt 3, that is, the inner and outer peripheral surfaces and both surfaces of the band steel belt members 3a, 3b,...3n, thereby making up for insufficient lubrication of lubriating oil, and preventing large generation of heat on a contact surface even in the slipping state where strong pressing force works.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a power transmission V used for a continuously variable transmission for a vehicle, etc.
A belt, especially a plurality of endless laminated metal belts, is provided with a large number of V-shaped metal members having outward contact surfaces that contact the metal belt, arranged in series in the longitudinal direction of the metal belt to form a V-belt as a whole. The present invention relates to a V-belt for power transmission comprising a V-belt for power transmission.

(Prior art) In a V belt for power transmission, a driving V pulley and a driven V
A belt is stretched between the pulleys to transmit power.

and Japanese Patent Application Laid-Open No. 60-1013 according to the applicant's earlier proposal.
No. 37, on a plurality of endless laminated metal belts, a large number of V-shaped metal members having outward contact surfaces that contact the metal belts are arranged in series in the longitudinal direction of the metal belts, and each A V-belt transmission device in which a roller member located inside the metal belt is inserted between V-shaped metal members to form a V-belt as a whole, and this is stretched between V-boleys on the driving side and the driven side. will be disclosed.

According to this, by applying side pressure to the driving V-pulley, the V-shaped metal member expands the mutual gap between each metal member by the seven surfaces of the V-pulley, and at the same time, the entire body is expanded by the simulated effect of the curved surfaces of the roller member and the metal member. A pressing force acts in the direction of increasing the radius of rotation of the metal members, and each metal member faces outward at its contact surface.

The metal belt is pressed and frictionally engaged with the metal belt, and the metal belt rotates integrally with the V-boot through the metal member. A tensile force is applied to the metal belt, and power is transmitted to the V-pulley on the driven side. .

(Problems to be Solved by the Invention) As described above, the metal belt is subjected to tensile force and is strongly pressed by the outward contact surface of the metal member. For this reason, slippage on the contact surfaces between the metal belt and the metal member, and slippage between the laminated metal belts can cause heat generation and seizure.
Moreover, this causes the wear of both parts, resulting in the inconvenience of shortening the life of the belt.

As a countermeasure for this, there is a method of providing oil supply grooves on the contact surface between the metal belt and the metal member to supply oil, and a method of providing a groove for storing lubricating oil on the inner surface of the belt.

However, in the former case, although it is effective when the contact surface pressure between the metal belt and the metal member is low, it has the disadvantage that the oil film breaks when the contact pressure is high. The surface pressure of the belt becomes even higher, resulting in a disadvantage in terms of stress. In the latter case, since grooves are provided on the surface of the thin plate belt, there is a disadvantage that the belt, which requires a strong tensile force, becomes weak in strength.

Furthermore, a method of supplying pressure oil to the contact surfaces can be considered, but since there are gaps between the metal members, the structure for supplying pressure oil is very difficult and has the disadvantage that the structure is considerably complicated.

Therefore, an object of the present invention is to attach a lubricating film that will not scatter even under high blood pressure to one of the contact surfaces where the oil film breaks by strong pressure welding. It compensates for the lack of oil lubrication between the laminated metal belts under high tension, and prevents large heat generation at the contact surface even in sliding conditions where strong pressure is applied, preventing seizure and preventing belt wear and early fatigue. It is an object of the present invention to provide a V-belt for power transmission, which is capable of improving its life by preventing such problems, and which also enables larger torque transmission when used in combination with general oil lubrication.

(Means for Solving the Problems) Therefore, the present invention provides a plurality of endless laminated metal belts (3
) on the outward facing contact surface (
In the V-belt (2) for power transmission, which comprises a V-belt as a whole by arranging a large number of V-shaped metal members (4) in the longitudinal direction of the metal belt (3), the laminated metal belt A thin solid coating (7) that provides lubricity was adhered to the surface of (3).

(Function) Since the surface of the laminated metal belt (3) is closely provided with the solid film (7) having a film-like lubricating property,
It can compensate for the lack of lubrication caused by oil under strong pressure contact with the metal member (4), reducing heat generation on the contact surface,
Prevents seizure [I Niji, metal belt (3) and metal parts (4)
) to prevent wear + I-L, V-belt (2) (7) 'i'
Prevents 1tJl fatigue.

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

In Figures 1 to 3, (1) shows the V-boot on the driving side, and a V-belt (2) is stretched between this pulley (1) and the V-boot on the driven side, and the Transmission takes place.

The V-belt (2) is a plurality of steel band belt members (3a).

A large number of V-shaped metal members (4) are placed on an endless metal belt (3) formed by laminating (3b), (3c)...(3n).
... are arranged in series along the longitudinal direction. The V-shaped metal member (4) has both sides (7) V side surfaces (41), (41) in contact with the V groove (11) of the V pulley (1), and the Jl/to (3) faces the metal. a groove (42) and an outwardly facing bottom contact surface (42) of the groove (42) with respect to the metal belt (3);
43) comes into contact.

Further, a roller member (5) located inside the metal belt (3) is inserted between each metal member (4), and a roller member (5) located inside the metal belt (3) is inserted between the metal members (4). Position to.

In addition, a stopper member (6) facing to the outside thereof is provided to allow the metal member (4) to come out inward of the belt. In addition, the metal member (4) has a receiving surface (45) on both sides of the metal belt (3) in the longitudinal direction of
).

(46).

Therefore, the metal member (4) is inserted into the V groove (11) of the V pulley (1).
When the metal member (4) is press-fitted, the outward bottom contact surface (43) presses the inner circumferential surface (31) of the metal belt (3) in a direction that increases the rotation radius, and the two are strongly pressed together. Then, a strong tensile force acts on the metal belt (3), and a strong tensile force moves between each of the belt members (3a), (3b), (3cl...(3n)) while being strongly pressed against each other.

Here, lubricating oil is supplied to the V-belt (3) in the form of droplets around it, but since it is not pressurized oil, the oil will scatter in areas that are strongly pressed, and the oil lubrication will be interrupted. Run short.

The V-shaped metal member (4) and the metal belt (3) are frictionally engaged by their contact surfaces, and each steel belt member (3a), (3b), (3) constituting the laminated metal belt (3)
c)...(3n) Since they are also frictionally engaged with each other by surfaces, mutual slippage occurs during torque transmission. Therefore,
Large loads and torque fluctuations cause heat generation and seizure in the frictional engagement parts, and belt wear.

Hereinafter, as shown in Fig. 4, a laminated metal belt (3
), that is, the steel belt members (3a), (3b), (3c)-13n) (7) constituting the laminated metal belt (3).
) The inner and outer circumferential surfaces and both side surfaces are provided with a thin solid coating (7) having lubricating properties in close contact with each other.

For example, as shown in the figure, the bottom contact surface (43) of the groove (42) of the metal member (4) and the side contact surfaces (44) on both sides thereof.
.

Solid coating (7) is applied to every belt member (3c) from the innermost belt (3a) that comes into contact with (44).
・Place.

In this way, the steel belt members (3a), (3
b).

(3c)...(3n) Mutual lubrication can also be performed.

Such a solid covering! Solid lubricants that form J(?) include a wide range of substances such as molybdenum disulfide, graphite, fluorine resins, metal oxides, sulfides, and synthetic resins.
It can be used alone or as a composite material.

Next, the solid film (7) is formed by subjecting the adhesion surface to surface treatment, applying a solid lubricant, and adhering it by air drying or baking. Further, the thickness of the coating (7) may be about 5 to 15 mm, and the adhesion becomes stronger when baked.

However, 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, a solid coating may be attached to the inner peripheral surface of each steel band belt member, or the clearance and plate thickness of each belt member may be
In the case where the tensile force acting on the metal belt is applied more to the innermost layer by selecting t.t., a solid coating may simply be attached to the surface (inner and outer circumferential surfaces) of the innermost layer of the belt member.

Incidentally, the laminated metal belt usually has about 9 to 15 sheets laminated.

(Effects of the Invention) As described above, according to the present invention, the lack of lubrication caused by oil under high surface pressure can be compensated for by the solid coating provided on the laminated metal belt. Large heat generation on the surface can be prevented by 1F, seizure can be prevented by IF, wear and early fatigue of the belt can be prevented by 1F, and the service life can be improved. And general oil ilt! When used in combination with slippage, large torque transmission becomes possible.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway side view showing a part of the V-belt transmission mechanism, Fig. 2 is a plan view of the same, Fig. 3 is a sectional view taken along line m-m in Fig. 1,
FIG. 4 is a longitudinal sectional front view of the laminated metal belt. In the drawings, (1) is a V pulley, (2) is a V bell), (
3) is a laminated metal belt, (3a)...(3n) is a belt member, (4) is a V-shaped metal member, (42) is a groove, (4
3). (44) is the belt contact surface, (5) is the roller member, (7)
is a solid film. Patent Applicant Ki FH Giken F Gyo Co., Ltd. Agent Patent Attorney 2 1) Toyo Part Baku Patent Attorney Dai
Kunibe Hashi Patent Attorney Koyama
I1 Patent Attorney No 1)
Shigeru Figure 2 4Z 4 Figure 3 Figure 4 a 7

Claims (1)

[Claims] A plurality of endless laminated metal belts are provided with a plurality of V-shaped metal members each having an outward contact surface that contacts the metal belts and arranged in series in the longitudinal direction of the metal belts. A V-belt for power transmission comprising a V-belt as a whole, characterized in that a thin solid coating having lubricating properties is adhered to the surface of a laminated metal belt.