阅读说明：本技术 一种离心接合型全相位斜撑离合器 (Centrifugal joint type full-phase inclined strut clutch ) 是由 卢敏 陈志豪 李继峰 靳国栋 朱如鹏 于 2020-07-15 设计创作，主要内容包括：本发明公开了一种离心接合型全相位斜撑离合器,包括楔块、保持架和弹簧箔片,保持架的环形圆柱侧面圆周均匀开设有若干组第一矩形孔,弹簧箔片等距开设有若干组第二矩形孔,弹簧箔片卷曲安装贴合设于保持架内,保持架第一矩形孔一侧中部设有凸起结构,弹簧箔片第二矩形孔内设有簧舌,簧舌为双簧舌结构,凸起结构卡合设于双簧舌结构之间,弹簧箔片的双簧舌上端伸出保持架的第一矩形孔外,楔块环形阵列插入设于第一矩形孔和第二矩形孔内。本发明属于机械传动领域,具体提供了一种新型的离心接合型全相位斜撑离合器,通过新型弹簧片和离心结构相结合的方法,对全相位斜撑离合器进行整体设计,达到离合器在任意转速下保持良好接合性能的目的。(The invention discloses a centrifugal joint type full-phase inclined strut clutch which comprises a wedge block, a retainer and a spring foil, wherein a plurality of groups of first rectangular holes are uniformly formed in the circumference of the side surface of an annular cylinder of the retainer, a plurality of groups of second rectangular holes are formed in the spring foil at equal intervals, the spring foil is arranged in the retainer in a winding and fitting mode, a bulge structure is arranged in the middle of one side of each first rectangular hole of the retainer, a spring tongue is arranged in each second rectangular hole of the spring foil, the spring tongue is of a double-spring-tongue structure, the bulge structure is clamped between the double-spring-tongue structures, the upper end of each double-spring-tongue of the spring foil extends out of the corresponding first rectangular hole of the retainer, and the annular array of the wedge. The invention belongs to the field of mechanical transmission, and particularly provides a novel centrifugal engagement type full-phase inclined strut clutch.)

1. A centrifugal engagement type full-phase sprag clutch characterized in that: the spring foil is of a hollow annular cylindrical structure, a plurality of groups of first rectangular holes are uniformly formed in the circumference of the side face of the annular cylinder of the retainer, the spring foil is an elastic long rectangular metal sheet, a plurality of groups of second rectangular holes are formed in the spring foil at equal intervals, the spring foil is arranged in the retainer in a curling, installing and laminating mode, the number of the second rectangular holes is equal to that of the first rectangular holes, the second rectangular holes are aligned with the first rectangular holes, a protruding structure is arranged in the middle of one side of each first rectangular hole of the retainer, a spring tongue is arranged in each second rectangular hole of the spring foil, the spring tongue is of a double-spring-tongue structure, the protruding structure is clamped between the double-spring-tongue structures, the upper end of the double-spring-tongue of the spring foil extends out of the first rectangular hole of the retainer, and the annular array of the wedge is inserted into the first rectangular holes and the second rectangular holes, the spring foil is tightly attached to the wedge blocks, the wedge blocks are provided with a plurality of groups, and the wedge blocks are equal in number and correspond to the first rectangular holes and the second rectangular holes one by one; an inner ring structure and an outer ring structure are arranged on one side of the retainer, the inner ring structure and the outer ring structure are clamped between an inner shaft and an outer shaft of the transmission, an inner ring structure is arranged on the other side of the retainer, the inner ring structure and the outer ring structure are matched to enable the inner side of the retainer to form a U-shaped groove, and the spring foil is arranged in the U-shaped groove in a winding mode; the middle part of the spring tongue is bent outwards and is arranged in a curled structure; the right outer surface of the wedge block is arranged in an outward extending structure, and the wedge block is a centrifugal joint type wedge block.

2. The centrifugally-engaged, full-phase sprag clutch of claim 1, wherein: the edge of the second rectangular hole, which is contacted with the wedge block, of the retainer is designed to be of an arc structure.

3. The centrifugally-engaged, full-phase sprag clutch of claim 1, wherein: the centrifugal engagement type all-phase sprag clutch includes an arc-shaped centrifugal engagement type all-phase sprag clutch, a constant-speed helical type centrifugal engagement type all-phase sprag clutch, and a logarithmic helical type centrifugal engagement type all-phase sprag clutch.

4. The centrifugally-engaged, full-phase sprag clutch of claim 1, wherein: the wedge block is a solid metal block.

Technical Field

The invention belongs to the field of mechanical transmission, and particularly relates to a centrifugal joint type full-phase inclined strut clutch.

Background

The inclined strut clutch is a mechanical structural member for realizing one-way transmission, is applied to transmission or transmission shunting of engines of aviation, automobiles and the like, and has two types, namely a full phase type and a forced continuous type. At present, the existing inclined strut clutch in service in the transmission field is limited by an integral structure and a design method, centrifugal joint is difficult to achieve, and most of the inclined strut clutches rely on elastic restraint of a spring to enable a wedge block to keep contact with an inner raceway and an outer raceway. One of the disadvantages is that when the outer shaft is in a high-speed state, the wedge block synchronized with the outer shaft is influenced by a reverse centrifugal force, and the wedge block gradually overcomes the defects that the spring force rotates reversely, and then the wedge block is separated from the inner and outer raceways (i.e. centrifugal separation), so that the clutch can not be engaged and driven in a high-speed state.

Disclosure of Invention

Aiming at the situation, in order to strengthen the engaging performance of the clutch under the working condition of high-speed rotation, improve the service robustness of the clutch and reduce the structural weight, the invention provides a novel centrifugal engaging type full-phase inclined strut clutch.

The technical scheme adopted by the invention is as follows: the invention relates to a centrifugal joint type full-phase inclined strut clutch, which comprises a wedge block, a retainer and a spring foil, wherein the retainer is of a hollow annular cylindrical structure, the retainer is a mounting main structural member, a plurality of groups of first rectangular holes are uniformly formed in the circumference of the side surface of an annular cylinder of the retainer, the spring foil is an elastic long rectangular metal sheet, a plurality of groups of second rectangular holes are formed in the spring foil at equal intervals, the spring foil is arranged in the retainer in a winding and fitting manner, the number of the second rectangular holes is equal to that of the first rectangular holes, the second rectangular holes are aligned with the first rectangular holes, a bulge structure is arranged in the middle of one side of each first rectangular hole of the retainer, a spring tongue is arranged in each second rectangular hole of the spring foil, the spring tongue is of a double-spring tongue structure, and the bulge structure is clamped between the double-spring tongue structures to play a role in positioning and stabilizing, the structure of the double-spring tongue provides enough elastic torque for the wedge block, the stability of the double-spring tongue and the retainer is improved, the upper end of the double-spring tongue of the spring foil extends out of the first rectangular hole of the retainer, the annular array of the wedge block is inserted into the first rectangular hole and the second rectangular hole, the spring foil is tightly attached to the wedge block, the spring foil provides elastic support and fixing action, the wedge block constantly keeps contact with the inner shaft and the outer shaft under the action of the spring foil, the clutch can be switched between an overrunning state and a wedging state at any time, the wedge block is provided with a plurality of groups, and the wedge block is equal in number and corresponds to the first rectangular hole and the second rectangular hole one by one; an inner ring structure and an outer ring structure are arranged on one side of the retainer, the inner ring structure and the outer ring structure are clamped between an inner shaft and an outer shaft which are driven to play a role in positioning and stabilizing the whole clutch, an inner ring structure is arranged on the other side of the retainer, the inner ring structure and the outer ring structure are matched to enable the inner side of the retainer to form a U-shaped groove, the spring foil is arranged in the U-shaped groove in a curling mode, and the U-shaped groove plays a role in restraining and fixing the; the spring tongue is arranged in a structure that the middle part is bent outwards and curled, and the outward bending and curling of the spring tongue can achieve the effect of clamping and fixing with the retainer and simultaneously can keep the direction of the elastic moment of the spring tongue to the wedge block consistent with the direction of the centrifugal moment; the right outer surface of the wedge block is of an outward extending structure, the wedge block is a centrifugal joint type wedge block, namely the gravity center of the wedge block is located on the right side of a connecting line of the shaft center of the centrifugal joint type full-phase inclined strut clutch and a contact point of the upper end of the wedge block and an outer shaft.

Furthermore, the edge of the second rectangular hole, which is in contact with the wedge block, of the retainer is designed to be of an arc structure, so that the wedge block is in sliding contact conveniently.

Further, the centrifugally engaged all-phase sprag clutch includes a circular arc centrifugally engaged all-phase sprag clutch, a constant velocity helical centrifugally engaged all-phase sprag clutch, a logarithmic helical centrifugally engaged all-phase sprag clutch.

Preferably, the wedge is a solid metal block.

The invention with the structure has the following beneficial effects:

(1) under the high rotating speed state, the centrifugal joint wedge block ensures the wedging transmission performance of the clutch, and the higher the rotating speed, the better the wedging performance is, and the non-wedging slipping state can not occur;

(2) the number of the retainers is reduced from 2 of the traditional inclined strut clutch to 1, so that the overall weight of the device is reduced, and the freedom degree of movement of the wedge block is enhanced;

(3) the traditional clutch wedge is independently clamped by a flexible spring foil, and is now clamped by a retainer with higher rigidity and a double-spring tongue together, so that the stability of the wedge and the whole clutch wedge is enhanced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic diagram of an overall structure of a centrifugally engaged full-phase sprag clutch according to the present invention;

FIG. 2 is a schematic structural view of a centrifugally engaged full-phase sprag clutch sprag according to the present invention;

FIG. 3 is a front view of a centrifugally engaged full phase sprag clutch sprag of the present invention;

FIG. 4 is a force diagram of a centrifugally engaged full phase sprag clutch wedge of the present invention;

FIG. 5 is a schematic diagram of a spring foil of a centrifugally engaged full-phase sprag clutch according to the present invention;

FIG. 6 is a schematic diagram of a spring foil of a centrifugally engaged full-phase sprag clutch according to the present invention;

FIG. 7 is a schematic diagram of the acting force of a spring foil and a wedge of a centrifugal engagement type full-phase sprag clutch according to the present invention;

fig. 8 is a schematic structural view of a centrifugally engaged full-phase sprag clutch cage according to the present invention.

The device comprises a wedge block 1, a wedge block 2, a retainer 3, a spring foil 4, a first rectangular hole 5, a second rectangular hole 6, a protrusion structure 7, a spring tongue 8, an inner ring structure, an outer ring structure 9 and an inner ring structure.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in figures 1-8, the invention relates to a centrifugal joint type full-phase inclined strut clutch, which comprises a wedge block 1, a retainer 2 and a spring foil 3, wherein the retainer 2 is a hollow annular cylindrical structure, the retainer 2 is a mounting main structural member, a plurality of groups of first rectangular holes 4 are uniformly formed in the circumference of the side surface of an annular cylinder of the retainer 2, the spring foil 3 is an elastic long rectangular metal sheet, a plurality of groups of second rectangular holes 5 are formed in the spring foil 3 at equal intervals, the spring foil 3 is arranged in the retainer 2 in a curling and fitting manner, the number of the second rectangular holes 5 is equal to that of the first rectangular holes 4, the second rectangular holes 5 are aligned with the first rectangular holes 4, a bulge structure 6 is arranged in the middle of one side of the first rectangular holes 4 of the retainer 2, spring tongues 7 are arranged in the second rectangular holes 5 of the spring foil 3, the spring tongues 7 are of a double-spring tongue structure, and the bulge, the double-reed-tongue structure provides enough elastic torque for the wedge block 1 and improves the stability with the retainer 2, the upper end of the double-reed-tongue of the spring foil 3 extends out of the first rectangular hole 4 of the retainer 2, the wedge block 1 is inserted into the first rectangular hole 4 and the second rectangular hole 5 in an annular array mode, the spring foil 3 is tightly attached to the wedge block 1, the spring foil 3 provides elastic support and fixing functions, under the action of the spring foil 3, the wedge block 1 is constantly kept in contact with the inner shaft and the outer shaft, the clutch can be switched between an overrunning state and a wedging state at any time, the wedge block 1 is provided with a plurality of groups, and the wedge block 1 is equal in number and corresponds to the first rectangular hole 4 and the second rectangular hole 5 one by one; an inner ring structure 8 and an outer ring structure 8 are arranged on one side of the retainer 2, the inner ring structure and the outer ring structure are clamped between an inner shaft and an outer shaft which are driven to play a role in positioning and stabilizing the whole clutch, an inner ring structure 9 is arranged on the other side of the retainer 2, the inner ring structure 8 and the inner ring structure 9 are matched to enable the inner side of the retainer 2 to form a U-shaped groove, the spring foil 3 is arranged in the U-shaped groove in a curling mode, and the U-shaped groove plays a role in restraining and; the spring tongue 7 is arranged in a structure that the middle part is bent outwards and curled, and the outward bending and curling of the spring tongue 7 can achieve the effect of clamping and fixing with the retainer 2 and simultaneously can keep the direction of the elastic moment of the wedge block 1 consistent with the centrifugal moment; the right outer surface of the wedge block 1 is arranged in an outward extending structure, the wedge block 1 is a centrifugal joint type wedge block 1, namely, the gravity center of the wedge block 1 is positioned on the right side of a connecting line of the axle center of a centrifugal joint type full-phase inclined strut clutch and the contact point of the upper end of the wedge block 1 and an outer axle.

The edge of the second rectangular hole 5, which is contacted with the wedge block 1, of the retainer 2 is designed to be of an arc structure, so that the wedge block 1 is in sliding contact conveniently. The centrifugally engaged all-phase sprag clutch includes a circular arc centrifugally engaged all-phase sprag clutch, a constant velocity helical centrifugally engaged all-phase sprag clutch, and a logarithmic helical centrifugally engaged all-phase sprag clutch. The wedge 1 is a solid metal block.

When the clutch is used specifically, under the action of the inner ring structure 8 and the outer ring structure 8 on the retainer 2, a certain gap is kept between the clutch and the inner shaft and the outer shaft, so that radial positioning is realized, the phase consistency of the wedge blocks 1 during bearing is ensured, and the load is relatively uniform; the outer surface of the traditional wedge block 1 is extended, so that the gravity center is shifted to the right side of a connecting line OC between the axis and the contact point, the three-dimensional structure is shown as figure 2, and the extended part is shown as the right side of a dotted line in figure 4, so that the centrifugal moment of the centrifugal force F of the wedge block 1 relative to the contact point C is anticlockwise, and on the other hand, the moment of the spring foil 3 relative to the elastic force F 'of the wedge block 1 and the fulcrum C' of the retainer 2 is also anticlockwise as shown in figure 7; therefore, it can be expected that the clutch at low rotation speed mainly uses the double-reed tongue of the spring foil 3 to support the wedge block 1, so that the wedge block is respectively kept in contact with the inner shaft and the outer shaft, thereby realizing wedging transmission and overrunning sliding, and the centrifugal force is smaller at the moment; the centrifugal moment is gradually increased at high rotating speed, the centrifugal moment and the double-spring-tongue act together to gradually enhance the contact of the wedge block 1 with the inner shaft and the outer shaft respectively, and the rotating speed and the moment have a direct proportional relation, so that the wedge block 1 at any rotating speed always keeps contact with the inner shaft and the outer shaft, and the higher the rotating speed, the better the bonding property.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.