CN216895461U - Plectrum formula one way clutch - Google Patents

Abstract

The utility model discloses a plectrum type one-way clutch, which relates to the field of one-way clutches and comprises an outer race, an inner race, a plectrum and a compression spring, wherein the outer race is coaxially sleeved on the outer periphery of the inner race, the outer race is fixedly connected to a guide wheel of a hydraulic torque converter and used for transmitting torque, and the inner race is fixedly connected to a guide wheel seat of the hydraulic torque converter; a plurality of inner race pull sheet grooves are uniformly formed in the surface of one side, facing the outer race, of the inner race, and each inner race pull sheet groove is provided with a spring groove for placing a compression spring; the inner wall of the outer race is uniformly provided with a plurality of outer race plectrum grooves along the circumference, the number of the plectrums corresponds to that of the inner race plectrum grooves, and each plectrum is movably arranged between the outer race plectrum groove and the inner race plectrum groove through a compression spring. The utility model can completely replace an inlet piece, meets the assembly requirement of the hydraulic torque converter on the one-way clutch, and has various performance indexes close to the level of foreign similar products.

Description

Plectrum formula one way clutch

Technical Field

The utility model relates to the field of one-way clutches, in particular to a shifting sheet type one-way clutch.

Background

One-way clutches, also called one-way bearings, are one of the core elements of integrated hydrodynamic torque converters and are widely used in hydromechanical transmissions because they are subjected to a large load in the hydrodynamic torque converter, and the reliability and service life of the entire hydrodynamic torque converter are determined to a large extent by this element.

The existing one-way clutch is generally composed of an outer race, an inner race, rollers, a compression spring and other elements. Mainly comprises a cylindrical roller type one-way clutch and a lug type one-way clutch. The cylindrical roller type one-way clutch has a simple structure, an outer race or an inner race is generally made into a cam surface, and certain difficulty is caused in processing and manufacturing, but the cylindrical roller type one-way clutch is convenient to use and maintain, sensitive in wedging and separating operation, noiseless, reliable in operation, high in allowable speed in a separating state and small in abrasion, so that the cylindrical roller type one-way clutch is most widely applied, for example, a large number of cylindrical roller type one-way clutches are applied to hydraulic torque converters of passenger vehicles. The inner and outer working surfaces of the lug type one-way clutch are cylindrical surfaces, the lug type one-way clutch is simple and convenient to process and easy to assemble, but the lug is special in shape and difficult to process, deformation of the retainer after heat treatment is difficult to control, and meanwhile, the lug cannot rotate, so that friction loss is large, abrasion is fast, and the lug type one-way clutch is mainly applied to hydraulic torque converters of engineering machinery such as forklifts, small-tonnage loaders and the like and also applied to hydraulic torque converters of passenger vehicles.

In order to reduce the production and manufacturing cost and reduce import dependence, a shifting sheet type one-way clutch is needed to be developed to break monopoly of the large-torque one-way clutch in China.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, and provides a shifting sheet type one-way clutch, which can effectively transmit the maximum torque of 400 N.m, and the performance index of the shifting sheet type one-way clutch is close to the level of foreign like products on the premise of the same specification and size.

The purpose of the utility model is achieved by the following technical scheme: the shifting piece type one-way clutch comprises an outer race, an inner race, a shifting piece and a compression spring, wherein the outer race is coaxially sleeved on the outer periphery of the inner race, the outer race is fixedly connected to a guide wheel of a hydraulic torque converter and used for transmitting torque, and the inner race is fixedly connected to a guide wheel seat of the hydraulic torque converter; a plurality of inner race shifting piece grooves are uniformly formed in the surface of one side, facing the outer race, of the inner race along the circumference, and each inner race shifting piece groove is provided with a spring groove for placing a compression spring; the inner wall of the outer race is uniformly provided with a plurality of outer race plectrum grooves along the circumference, the number of the plectrums corresponds to that of the inner race plectrum grooves, and each plectrum is movably arranged between the outer race plectrum grooves and the inner race plectrum grooves through a compression spring.

As a further technical solution, the number of outer race pick grooves is greater than the number of inner race pick grooves.

As a further feature, the outer race paddle channel includes a channel bottom surface and a ramp surface connected between the channel bottom surface and an inner wall of the outer race.

As a further technical scheme, a notch is arranged on one side of the inner race plectrum groove, and the shape of the large end of the plectrum is matched with the notch so as to be conveniently clamped into the notch; the small end of the poking sheet is abutted against the bottom surface of the outer race poking sheet groove and slides along the inclined surface.

As a further technical scheme, a plurality of tooth grooves are uniformly distributed on the outer side wall of the outer race along the circumferential direction, and the tooth grooves are matched and fixed with the convex ribs of the guide wheel.

As a further technical solution, the inner race is fixedly connected with the guide wheel seat through a spline.

As a further technical scheme, a retainer ring is sleeved on the surface of one side, away from the outer race, of the inner race, and a retainer ring clamping groove is formed in the inner side wall of the outer race in the circumferential direction and used for clamping the retainer ring.

As a further aspect, the maximum torque transmitted by the paddle type one-way clutch is 400N · m.

The utility model has the beneficial effects that: the hydraulic torque converter can completely replace an inlet piece, meets the assembly requirement of the hydraulic torque converter on the one-way clutch, and has various performance indexes close to the level of foreign similar products. Meanwhile, the novel steel wire rope is not easy to damage, has better error prevention during assembly, high reliability and easy organization and production, greatly reduces the production cost and improves the market competitiveness of products. Meanwhile, the method can be developed in an extending way to the one-way clutch for transmitting the large torque, breaks through monopoly of the large-torque one-way clutch in foreign countries, and has a positive promoting effect on breaking through key technologies of foreign core parts.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a sectional view a-a of fig. 1.

Fig. 3 is a sectional view B-B of fig. 1.

Fig. 4 is a schematic view of the structure of the outer race.

FIG. 5 is a schematic view of the mounting structure of the outer race and the paddle.

Fig. 6 is a schematic diagram of an inner race.

Fig. 7 is a schematic view of the mounting structure of the inner race, the compression spring and the pulling plate.

Fig. 8 is a schematic view of the mounting structure of the inner race and the retainer ring.

Description of reference numerals: the outer race 1, the tooth groove 11, the outer side wall 12, the inner side wall 13, the inner wall 14, the outer race blade groove 15, the retainer ring clamping groove 16, the groove bottom 17, the inclined plane 18, the inner race 2, the spline 21, the inner race blade groove 22, the spring groove 23, the notch 24, the blade 3, the large end 31, the small end 32, the compression spring 4 and the retainer ring 5.

Detailed Description

The utility model will be described in detail below with reference to the following drawings:

example (b): as shown in the attached figures 1-8, the plectrum type one-way clutch comprises an outer race 1, an inner race 2, a plectrum 3, a compression spring 4 and a retainer ring 5. The outer side wall 12 of the outer race 1 is uniformly provided with a plurality of tooth grooves 11 along the circumferential direction, and the tooth grooves 11 are matched and fixed with convex ribs of a hydraulic torque converter guide wheel for transmitting torque. As shown in fig. 6, the inner race 2 is fixedly connected to a stator of the torque converter by splines 21. Referring to fig. 6 and 7, five inner race dial grooves 22 (five in this embodiment, or other numbers) are uniformly formed along the circumference on one side surface of the inner race 2 facing the outer race 1, and each inner race dial groove 22 is formed with a spring groove 23 for receiving the compression spring 4. As shown in fig. 4 and 5, a plurality of outer race dial grooves 15 are uniformly formed on the inner wall 14 of the outer race 1 along the circumference, the number of the dials 3 corresponds to the number of the inner race dial grooves 22, and the number of the outer race dial grooves 15 is greater than the number of the inner race dial grooves 22. As shown in fig. 3, each pick 3 is movably disposed between the outer race pick groove 15 and the inner race pick groove 22 by a compression spring 4.

Further, as shown in fig. 5, the outer race tab groove 15 includes a groove bottom surface 17 and a slope 18 connecting between the groove bottom surface 17 and the inner wall 14 of the outer race 1. Referring to fig. 7, the inner race paddle groove 22 is provided with a notch 24 on one side, and the large end 31 of the paddle 3 is shaped to match the notch 24 so as to be snapped into the notch 24. As shown in fig. 5, the small end 32 of the pick 3 abuts against the groove bottom surface 17 of the outer race pick groove 15 and slides along the inclined surface 18.

As shown in fig. 2, 4, 5, and 8, a retainer ring 5 is sleeved on a surface of the inner race 2 facing away from the outer race 1, and a retainer ring locking groove 16 is formed in an inner side wall 13 of the outer race 1 along a circumferential direction for being locked into the retainer ring 5.

Preferably, the transmitted maximum torque of the disc-type one-way clutch is 400N · m.

The working process of the utility model is as follows: when the hydraulic torque converter is in a low-speed working condition, the guide wheel blade is continuously impacted by liquid flow, so that the guide wheel (the outer race 1) tends to rotate anticlockwise. At this time, the paddle 3 is caught in the outer race paddle groove 15 and the inner race paddle groove 22 due to the action of the pressing spring 4. Since the inner race 2 is connected to the fixed stator and is not able to rotate, the outer race 1 is caught by the paddle 3 (as shown in fig. 5, the small end of the paddle 3 abuts against the groove bottom surface 17) and is not able to rotate, so that the stator cannot rotate, and the stator gives a reaction force to the fluid flow and plays a role of torque conversion of the torque converter. When the torque converter is in a high-speed working condition, the angle of liquid flow impacting the guide wheel is changed, so that the guide wheel (outer race 1) has the tendency of clockwise rotation. At this time, the pick 3 is carried by the outer race 1, and referring to fig. 3, the small end 32 of the pick 3 moves along the inclined surface 18 toward the inner wall 14 of the outer race 1, so that the hold-down spring 4 is gradually compressed until it is completely compressed, and then is separated from the outer race pick groove 15, and comes into surface contact with the inner wall 14, and then enters the next outer race pick groove 15. Thus, there is relative rotation between the outer race 1 and the inner race 2, and at this time, the action force of the paddle 3 on the outer race 1 is small, the outer race 1 is free to rotate in the clockwise direction (and the direction indicated by the arrow in fig. 1), and at this time, the torque converter enters the coupling condition, and the stator has no torque conversion function.

The one-way clutch related to the utility model is a shifting sheet type one-way clutch, and has the characteristics of simple structure and easy processing and manufacturing. When the one-way clutch is disengaged, the outer race drives the shifting sheet to compress the compression spring, and the outer race can freely rotate towards one direction. When the one-way clutch is not separated, the pressure spring pushes the shifting piece open, one end of the shifting piece is clamped inside the inner race, and the other end of the shifting piece is clamped inside the outer race, so that the shifting piece cannot move relatively, and the purpose of unidirectional rotation is achieved. The opposite contact surfaces of the inner race and the outer race of the plectrum type one-way clutch are cylindrical surfaces, the plectrum can be finished by grinding, the plectrum can be made of stamping parts, and the plectrum is ground after heat treatment, so that the plectrum type one-way clutch is easy to manufacture. The shifting piece type one-way clutch has the advantages of large transmission torque, good reliability, strong installation mistake proofing property, convenient installation, low requirement on the cleanliness of oil, easy maintenance and replacement, low manufacturing cost and wide application range. The hydraulic torque converter can be applied to hydraulic torque converters of passenger vehicles and engineering mechanical vehicles.

It should be understood that equivalent alterations and modifications of the technical solution and the inventive concept of the present invention by those skilled in the art should fall within the scope of the appended claims.

Claims (8)

1. A plectrum formula one way clutch which characterized in that: the hydraulic torque converter comprises an outer race (1), an inner race (2), a shifting sheet (3) and a compression spring (4), wherein the outer race (1) is coaxially sleeved on the periphery of the inner race (2), the outer race (1) is fixedly connected to a guide wheel of the hydraulic torque converter and used for transmitting torque, and the inner race (2) is fixedly connected to a guide wheel seat of the hydraulic torque converter; a plurality of inner race shifting piece grooves (22) are uniformly formed in the surface of one side, facing the outer race (1), of the inner race (2) along the circumference, and each inner race shifting piece groove (22) is provided with a spring groove (23) for placing a compression spring (4); a plurality of outer race plectrum grooves (15) are evenly arranged on the inner wall (14) of the outer race (1) along the circumference, the number of the plectrums (3) corresponds to the number of the inner race plectrum grooves (22), and each plectrum (3) is movably arranged between the outer race plectrum grooves (15) and the inner race plectrum grooves (22) through a compression spring (4).

2. The paddle one-way clutch of claim 1, wherein: the number of outer race tab grooves (15) is greater than the number of inner race tab grooves (22).

3. The paddle one-way clutch of claim 2, wherein: the outer race pull tab groove (15) includes a groove bottom surface (17) and a ramp surface (18) connected between the groove bottom surface (17) and the inner wall (14) of the outer race (1).

4. The paddle one-way clutch of claim 3, wherein: a notch (24) is formed in one side of the inner race poking sheet groove (22), and the shape of a large end (31) of the poking sheet (3) is matched with that of the notch (24) so as to be clamped into the notch (24); the small end (32) of the plectrum (3) is abutted against the groove bottom surface (17) of the outer race plectrum groove (15) and slides along the inclined surface (18).

5. The paddle one-way clutch of claim 1, wherein: a plurality of tooth grooves (11) are uniformly distributed on the outer side wall (12) of the outer race (1) along the circumferential direction, and the tooth grooves (11) are matched and fixed with the convex ribs of the guide wheel.

6. The paddle one-way clutch of claim 1, wherein: the inner race (2) is fixedly connected with the guide wheel seat through a spline (21).

7. The paddle one-way clutch of claim 1, wherein: the inner race (2) deviates from one side surface of outer race (1) and is equipped with retaining ring (5) on the cover, retaining ring draw-in groove (16) have been seted up along the circumferencial direction on inside wall (13) of outer race (1) for block ring (5) are gone into to the card.

8. The paddle shift type one-way clutch according to any one of claims 1 to 7, wherein: the maximum torque transmitted by the paddle type one-way clutch is 400N · m.

Images