阅读说明：本技术 集成多级减振功能的花键结构 (Spline structure integrating multistage vibration reduction function ) 是由 邱毅凡 陈祥 于 2019-08-30 设计创作，主要内容包括：本发明公开一种集成多级减振功能的花键结构,包括主体花键和减振花键,减振花键上设置的花键齿对应主体花键上的缺齿位置进行填补镶套装配,形成减振花键上的花键齿与主体花键上的花键齿为非径向均布的完整的花键结构,弹簧组件嵌入主体花键与减振花键的弹簧槽中,与飞轮盘上的弹簧槽位置对应装配固定,再与传扭板设置的花键齿连接传扭,传扭板与主减振器的输入连接,所述花键结构形成优化主减振器的一级减振扭矩和二级减振扭矩。本发明的优点是弥补整车中主减振器减振能力有限的问题,提升整个减振系统的扭转角度,提升整车的驾驶舒适性。(The invention discloses a spline structure integrating a multistage vibration damping function, which comprises a main body spline and a vibration damping spline, wherein spline teeth arranged on the vibration damping spline are filled and embedded at positions corresponding to the tooth-missing positions on the main body spline, a complete spline structure with the spline teeth on the vibration damping spline and the spline teeth on the main body spline being non-radially and uniformly distributed is formed, a spring assembly is embedded in spring grooves of the main body spline and the vibration damping spline, is assembled and fixed correspondingly to the positions of the spring grooves on a flywheel disc, and is connected with a torque transmission plate through the spline teeth arranged on the torque transmission plate, the torque transmission plate is connected with the input of a main vibration damper, and the spline structure forms a first-stage vibration damping torque and a second-stage vibration damping torque which optimize. The invention has the advantages of making up the problem of limited damping capacity of the main damper in the whole vehicle, improving the torsion angle of the whole damping system and improving the driving comfort of the whole vehicle.)

1. The utility model provides an integrated multistage damping function's spline structure which characterized in that: the spline structure comprises a main body spline and a vibration reduction spline, spline teeth arranged on the vibration reduction spline correspond to the positions of the missing teeth on the main body spline to be filled and sleeved, a complete spline structure with the spline teeth on the vibration reduction spline and the spline teeth on the main body spline being non-radially and uniformly distributed is formed, a spring assembly is embedded into a spring groove of the main body spline and the vibration reduction spline, is correspondingly assembled and fixed with the position of the spring groove on a flywheel disc, and is connected with a torque transmission plate, the torque transmission plate is connected with the input of a main vibration absorber, and the spline structure forms a primary vibration reduction torque and a secondary vibration reduction torque which optimize the main vibration absorber.

2. The spline structure integrating a multistage vibration damping function according to claim 1, wherein: spline teeth arranged on the torque transmission plate push the spline teeth of the vibration reduction spline to rotate by a spline pre-tightening angle B, a primary spring is compressed to generate a pre-tightening torque for inhibiting the spline from knocking in the rotation process of the vibration reduction spline, when the torque received by the torque transmission plate is larger than the pre-tightening torque, the primary spring is further compressed to generate a primary vibration reduction torque, when the torque received by the torque transmission plate is further increased, the compression of a secondary spring is promoted to form a secondary vibration reduction torque, and the torsion angle of the primary vibration reduction and the secondary vibration reduction is equal to A-B.

3. The spline structure integrating a multistage vibration damping function according to claim 1, wherein: the damping spline is characterized in that an odd number or an even number of teeth are arranged on the main body spline, spline teeth corresponding to the number of the teeth are arranged on the damping spline, and the positions of the spline teeth on the damping spline correspond to the positions of the teeth on the main body spline.

4. The spline structure integrating a multistage vibration damping function according to claim 1, wherein: the spring assembly comprises a primary spring and a secondary spring, and the secondary spring is arranged in a central hole of the primary spring and sleeved to form the spring assembly.

5. The spline structure integrating a multistage vibration damping function according to claim 3, wherein: the length of the secondary spring is shorter than that of the primary spring.

6. The spline structure integrating a multistage vibration damping function according to claim 1, wherein: odd number or even number spring grooves are uniformly distributed on the main body spline, the vibration reduction spline and the flywheel disc.

Technical Field

The invention relates to a spline structure integrating a multistage vibration reduction function, which is applied to various internal and external spline interfaces for transferring torque in an automobile power assembly system.

Background

The spline is the structure that realizes moment of torsion transmission, automatic aligning function, through the definition to spline precision grade, through promoting the spline precision in order to reduce spline flank clearance, reaches the effect that reduces vibration and spline tooth and strike, nevertheless promotes the straight-line rising that the machining precision of spline can lead to the cost.

At present, splines are widely applied to various power assembly systems of automobiles, for example, in structures such as a manual transmission, an automatic transmission and a continuously variable transmission, the traditional spline structure inevitably has spline tooth side gaps due to assembly requirements, vibration and spline tooth knocking are caused, and the spline is seriously and directly broken, and the knocking abnormal sound of the splines is heard in a cab. This is where the application needs to be focused on.

Disclosure of Invention

The invention aims to provide a spline structure integrating a multi-stage vibration damping function, which has a compact structure and a good vibration damping effect.

In order to solve the technical problems, the invention provides a spline structure integrating a multi-stage vibration damping function, which comprises a main body spline and a vibration damping spline, wherein spline teeth arranged on the vibration damping spline are filled and embedded at positions corresponding to the tooth-missing positions on the main body spline to form a complete spline structure in which the spline teeth on the vibration damping spline and the spline teeth on the main body spline are uniformly distributed in a non-radial direction, a spring assembly is embedded in a spring groove of the main body spline and the vibration damping spline and is correspondingly assembled and fixed with the position of the spring groove on a flywheel disc, and then is connected with a torque transmission plate which is connected with the input of a main vibration damper.

Spline teeth arranged on the torque transmission plate push the spline teeth of the vibration reduction spline to rotate by a spline pre-tightening angle B, a first-stage spring is compressed to generate a pre-tightening torque for inhibiting the spline from knocking in the rotating process of the vibration reduction spline, when the torque received by the torque transmission plate is larger than the pre-tightening torque, the first-stage spring is further compressed to generate a first-stage vibration reduction torque, when the torque received by the torque transmission plate is further increased, the compression of a second-stage spring is promoted to form a second-stage vibration reduction torque, the first-stage vibration reduction and the second-stage vibration reduction torsion angle are equal to A-B, and the torsion angle of the vibration reduction system is. The pre-tightening torque completely eliminates the clearance between the gear sides matched with the splines through the pre-tightening force, and ensures that the whole vehicle cannot generate the sound of spline knocking under the idling working condition. The first-stage damping torque meets the damping requirement of the whole vehicle under the idle crawling condition, and the second-stage damping torque is used as the transition of the first-stage damping linking to the main damper.

The damping spline is characterized in that an odd number or an even number of teeth are arranged on the main body spline, spline teeth corresponding to the number of the teeth are arranged on the damping spline, and the positions of the spline teeth on the damping spline correspond to the positions of the teeth on the main body spline.

The spring assembly comprises a primary spring and a secondary spring, and the secondary spring is arranged in a central hole of the primary spring and sleeved to form the spring assembly.

The length of the secondary spring is shorter than that of the primary spring.

Odd number or even number spring grooves are uniformly distributed on the main body spline, the vibration reduction spline and the flywheel disc.

The structure of the invention has the following excellent effects:

1) the structure of the invention completely eliminates the tooth side clearance of spline fit, and prevents the problems of spline knocking abnormal sound and vibration under the working condition of idling of the whole vehicle;

2) the invention has compact structure and easy assembly, and can not cause the problem of difficult assembly of the spline due to the elimination of the clearance of the tooth sides of the spline;

3) the invention is used for making up the problem that the damping capacity of the main damper in the whole vehicle is limited, improving the torsion angle of the whole damping system and improving the driving comfort of the whole vehicle by the existing space;

4) the invention realizes the functions of reducing the vibration of the power assembly, preventing resonance, avoiding the knocking of spline teeth, prolonging the service life of parts and the like.

Drawings

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

FIG. 1 is a schematic cross-sectional view of an assembly of the present invention;

FIG. 2 is a schematic view of the damping function of the present invention;

FIG. 3 is an exploded view of the structure of the present invention;

FIG. 4 is a graph of the performance of the present invention;

1-a torque transmission plate; 2-a body spline;

3-riveting; 4-a secondary spring;

5-a primary spring; 6-damping splines;

7-flywheel disc;

a-damping torsion angle; b-spline pre-tightening angle.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The primary damper in the present embodiment refers to a dual mass flywheel, or a damping driven disc or other component with a damping function.

FIG. 1 shows a schematic cross-sectional view of an assembly of the present invention; FIG. 2 shows a schematic view of the damping function of the present invention; FIG. 3 shows an exploded view of the structure of the present invention; figure 4 shows a graph of the performance of the invention. As shown in fig. 1-4, the present invention provides a spline structure integrated with multi-stage vibration reduction function, which comprises a torque plate 1, a main spline 2, a rivet 3, a secondary spring 4, a primary spring 5, a vibration reduction spline 6 and a flywheel disk 7, wherein the torque plate 1 is used as an input of a main vibration reducer, is connected with a dual mass flywheel, and transmits the power of an engine to the spline structure integrated with multi-stage vibration reduction function of the present invention after passing through the dual mass flywheel. The installation of inlaying the cover with damping spline 6 for main part spline 2, be provided with odd number or even number on the main part spline 2 and lack the tooth, the structure shown in figure 3 is four and lacks the tooth, the spline tooth that corresponds and lacks tooth quantity has been arranged on damping spline 6, spline tooth on the damping spline 6 and the corresponding assembly in scarce tooth position on the main part spline 2, odd number or even number spring groove have been put to the equipartition on damping spline 6 and the flywheel dish 7, the structure shown in figure 3 is four spring grooves, the one-level spring 1 centre bore of packing into of second grade spring 4 carries out the registrate assembly, imbed again in the spring groove of main part spline 2 and damping spline 6, and the length of second grade spring 4 is shorter than. At this moment, a main body spline 2, a damping spline 6, a first-stage spring 5 and a second-stage spring 4 become an assembly body, then a spring groove position at a flywheel disc 7 position corresponds to assemble, riveting is carried out through a rivet 3, an assembly body formed by the main body spline 2, the rivet 3, the second-stage spring 4, the first-stage spring 5, the damping spline 6 and the flywheel disc 7 is formed, in the assembly body, a tooth missing position on the main body spline 2 is filled by spline teeth arranged on the damping spline 6, a complete spline structure with the spline teeth on the damping spline 6 and the spline teeth on the main body spline 2 being non-radially uniformly distributed is formed, and a spline pre-tightening angle B shown in figure 2 is formed. And then the transmission plate is connected with spline teeth of a transmission plate 1, the transmission plate is riveted with a main shock absorber through rivets, the spline teeth arranged on the transmission plate 1 push the spline teeth of the damping spline 6 to rotate by an angle B, a primary spring 5 is compressed to generate a pre-tightening torque in the rotation process of the damping spline 6, as shown in figure 4, the pre-tightening torque is generally designed to be larger than the idle torque of an engine, when the torque received by the transmission plate 1 is larger than the pre-tightening torque, the primary spring 5 is further compressed to generate a primary damping torque, when the torque received by the transmission plate 1 is further increased, the compression of a secondary spring 4 is promoted to form a secondary damping torque, and the torsion angle of the primary damping plus the secondary damping is equal to A-B.

As shown in fig. 4, the ordinate is torque, the abscissa is angle, the illustrated torque is divided into three stages, which are respectively pre-tightening torque, primary vibration damping torque and secondary vibration damping torque, the primary vibration damping torque and the secondary vibration damping torque respectively correspond to the primary vibration damping angle and the secondary vibration damping angle, the pre-tightening torque is generally designed to be larger than the idle torque of the engine, and under the idle working condition of the engine, the idle torque cannot overcome the pre-tightening torque to push the vibration damping spline 6, so that the generation of the spline tooth side gap is effectively inhibited, and the knocking of the spline teeth under the idle working condition is avoided. When the output driving torque of the engine is larger than the idling torque, the driving torque overcomes the pre-tightening torque to push the vibration reduction spline 6, the spring is further compressed to reach the stage of the first-stage vibration reduction torque and the second-stage vibration reduction torque, the angles of the first-stage vibration reduction and the second-stage vibration reduction and the damping of the two-stage vibration reduction are set according to the matching requirement of a specific power assembly, so that the optimal vibration reduction effect is achieved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.