CN111237112A - Gasoline engine driving disc - Google Patents

Abstract

The invention discloses a gasoline engine driving disc, which comprises a flexible plate and a flywheel gear ring fixedly sleeved on the flexible plate, wherein the flexible plate is sequentially divided into a crankshaft mounting part and a torque converter mounting part from inside to outside, and the crankshaft mounting part is provided with a central hole and a plurality of crankshaft mounting holes uniformly distributed along the same circumference; the torque converter mounting part is convexly provided with a plurality of mounting bosses which are uniformly distributed along the same circumference rightwards, each mounting boss is provided with a torque converter mounting hole, and all the torque converter mounting holes are uniformly distributed along the same circumference; wherein, the periphery of every installation boss has all seted up the destressing hole on the bent axle installation department. The torque converter mounting part is provided with a plurality of mounting bosses which are uniformly distributed along the same circumference in a rightward protruding mode, can bear the axial rigidity of a large bearing surface of the torque converter, can increase the arrangement space of the stress removing holes, further reduces the stress concentration of the flexible plate, and prolongs the service life of the driving plate.

Description

A gasoline engine drive plate

technical field

The invention relates to the field of drive disks, in particular to a gasoline engine drive disk.

Background technique

The drive plate transmits torque to the flywheel ring gear by the gear of the starter to start, one end of which is rigidly connected to the output end of the crankshaft, and the other end is rigidly connected to the hydraulic torque converter of the CVT. The drive plate receives the torque and speed of the crankshaft end and transmits it to the torque converter. The drive plate relies on its own flexibility and flexibility to reduce noise and vibration, reduce unevenness and impact, and offset the shaft of the crankshaft and torque converter. To save the movement, reducing the normal sudden acceleration and deceleration of the transmission system. Therefore, the drive plate is subjected to the large torque generated by the engine, and is subjected to torsion and bending conditions at the same time. The force form is very bad, and the requirements for rigidity and fatigue strength are very strict. The rigidity is too large, which is easy to cause stress concentration and fatigue cracking.

The information disclosed in this Background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a gasoline engine drive disk, so as to overcome the shortcomings of the existing drive disk that are prone to stress concentration and fatigue cracking.

In order to achieve the above purpose, the present invention provides a gasoline engine drive plate, which includes a flexible plate and a flywheel ring gear fixedly sleeved on the flexible plate, and the flexible plate is divided into crankshaft mounting parts in turn from inside to outside. and torque converter mounting part, the crankshaft mounting part is provided with a central hole and several crankshaft mounting holes evenly distributed along the same circumference; Mounting bosses, each of the mounting bosses is provided with a torque converter mounting hole, and all the torque converter mounting holes are evenly distributed along the same circumference; The periphery of the boss is provided with stress relief holes.

Preferably, in the above technical solution, the stress relief holes include: a plurality of first through holes, the first through holes are arranged in a one-to-one correspondence with the mounting bosses, and each of the first through holes is located in the corresponding Between the mounting boss and the crankshaft mounting portion, all the first through holes are evenly distributed along the same circumference; wherein, each of the first through holes is an arc-shaped curved hole structure with a concave surface facing outward; and a plurality of first through holes Two through holes, one second through hole is disposed between two adjacent mounting bosses, all the second through holes are evenly distributed along the same circumference and surround the outside of all the first through holes .

Preferably, in the above technical solution, the area of the second through hole is smaller than the area of the first through hole.

Preferably, in the above technical solution, the right end face of the crankshaft mounting portion protrudes to the right relative to the right end face of the torque converter mounting portion, and the rightward protruding height of the crankshaft mounting portion is smaller than that of the mounting portion. Height by which the boss protrudes to the right.

Preferably, in the above technical solution, each of the mounting bosses and the torque converter mounting portion are integrally formed.

Preferably, in the above technical solution, an annular boss is protruded to the right along the circumferential direction on the edge of the torque converter mounting portion, and the inner circle of the flywheel ring gear is fixedly sleeved on the annular boss.

Preferably, in the above technical solution, the annular boss and the torque converter mounting portion are integrally formed.

Preferably, in the above technical solution, a reinforcing plate is further included, the reinforcing plate is fixedly arranged on the right end surface of the crankshaft mounting portion, and a position corresponding to each of the crankshaft mounting holes is opened on the reinforcing plate A nail-passing hole is provided, and the reinforcing plate is provided with a reinforcing plate hole at a position corresponding to the central hole.

Preferably, in the above technical solution, the right end face of the crankshaft mounting portion is protruded to the right with a plurality of connecting bosses evenly distributed along the same circumference, and the reinforcing plate is on a position corresponding to each of the connecting bosses A connecting through hole is opened, and each of the connecting bosses passes through the corresponding connecting through hole and is upset.

Compared with the prior art, the present invention has the following beneficial effects:

The flexible plate of the present invention includes a crankshaft mounting portion and a torque converter mounting portion. The torque converter mounting portion is provided with a number of mounting bosses that are evenly distributed along the same circumference, and each mounting boss is provided with a torque converter. All torque converter mounting holes are evenly distributed along the same circumference to avoid interference between the installation of the torque converter and the drive plate, can withstand the axial stiffness of the large bearing surface of the torque converter, and improve the drive plate and torque converter. The stability of the connector connection; the raised structure of the mounting boss can open a stress relief hole on the periphery of each mounting boss to increase the arrangement space of the stress relief hole, thereby increasing the rigidity adjustment range of the flexible board. Reduce the stress concentration of the flex plate, thereby reducing the risk of fatigue cracking and increasing the service life of the drive disk.

Description of drawings

FIG. 1 is a schematic structural diagram of a gasoline engine drive plate according to the present invention.

FIG. 2 is a cross-sectional view taken along line A-A in FIG. 1 according to the present invention.

Description of main reference signs:

1- torque converter mounting part, 2- flywheel ring gear, 3- mounting boss, 4- torque converter mounting hole, 5- center hole, 6- first through hole, 7- second through hole, 8- connection Through hole, 9-annular boss, 10-crankshaft installation part, 11-crankshaft installation hole, 12-reinforcing plate, 13-reinforcing plate hole, 14-through nail hole.

Detailed ways

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

Unless expressly stated otherwise, throughout the specification and claims, the term "comprising" or its conjugations such as "comprising" or "comprising" and the like will be understood to include the stated elements or components, and Other elements or other components are not excluded.

1 and 2 show a schematic structural diagram of a gasoline engine drive plate according to a preferred embodiment of the present invention, the drive plate includes a flexible plate and a flywheel ring gear 2 fixedly sleeved on the flexible plate. Referring to Figures 1 and 2, the flexible plate is divided into a crankshaft mounting portion 10 and a torque converter mounting portion 1 in turn from the inside to the outside. The crankshaft mounting portion 10 is provided with a central hole 5 and a number of crankshaft mountings that are evenly distributed along the same circumference. hole 11, and the center of the circle enclosed by all the crankshaft mounting holes 11 intersects with the axis of the central hole 5, so as to facilitate the installation of the crankshaft. The torque converter mounting portion 1 is protruded to the right with a number of mounting bosses 3 evenly distributed along the same circumference. Each mounting boss 3 is provided with a torque converter mounting hole 4. The same circumference is evenly distributed, and the installation boss 3 that protrudes to the right can avoid the installation interference between the torque converter and the drive plate, can withstand the axial rigidity of the large bearing surface of the torque converter, and improve the connection between the drive plate and the torque converter. stability. Wherein, the torque converter mounting portion 1 is provided with stress relief holes at the periphery of each mounting boss 3 , that is, the structure of the mounting boss 3 protruding can be provided with stress relief holes on the periphery of each mounting boss 3 By increasing the arrangement space of the stress relief holes, the rigidity adjustment range of the flexible plate can be increased, and the stress concentration of the flexible plate can be reduced, thereby reducing the risk of fatigue cracking and improving the service life of the drive disk.

1 and 2 , preferably, the stress relief holes include a plurality of first through holes 6 and a plurality of second through holes 7 . The first through holes 6 are arranged in a one-to-one correspondence with the mounting bosses 3 . The holes 6 are located between the corresponding mounting bosses 3 and the crankshaft mounting portion 10, and all the first through holes 6 are evenly distributed along the same circumference; wherein, each first through hole 6 has an arc-shaped curved hole structure with a concave surface facing outwards , and the center line of the first through hole 6 and the center of the torque converter mounting hole 4 on the corresponding mounting boss 3 are located on the same line; the number of the second through hole 7 is the same as the number of the first through hole 6, and the A second through hole 7 is disposed between two adjacent mounting bosses 3 , and all the second through holes 7 are evenly distributed along the same circumference and surround the outside of all the first through holes 6 . Further preferably, the area of the second through hole 7 is smaller than the area of the first through hole 6, that is, the area of a single second through hole 7 is smaller than the area of a single first through hole 6, and the sum of the areas of all the second through holes 7. The sum is also smaller than the sum of the areas of all the first through holes 6 . By reasonably arranging the number and size of stress relief holes around each mounting boss 3, the stress concentration of the flexible board is further reduced, thereby reducing the risk of fatigue cracking.

Referring to FIG. 2 , preferably, the right end face of the crankshaft mounting portion 10 is protruded to the right relative to the right end face of the torque converter mounting portion 1 , so as to facilitate the installation of the crankshaft, and the height of the crankshaft mounting portion 10 protruding to the right is smaller than that of the installation. The height that the boss 3 protrudes to the right.

1 and 2, preferably, an annular boss 9 is protruded to the right along the circumferential direction on the edge of the torque converter mounting portion 1, and the inner circle of the flywheel ring gear 2 is fixedly sleeved on the annular boss 9, so as to The installation stability of the flywheel ring gear 2 and the flexible plate is improved, thereby improving the overall connection stability of the drive disk.

1 and 2, preferably, each mounting boss 3 is integrally formed with the torque converter mounting portion 1, and the annular boss 9 is also integrally formed with the torque converter mounting portion 1, thereby improving the integrity of the flexible plate. Wherein, the mounting boss 3 can be punched rightward from a flexible plate.

1 and 2, preferably, the drive plate further includes a reinforcing plate 12, the reinforcing plate 12 is fixedly arranged on the right end face of the crankshaft mounting portion 10, and the reinforcing plate 12 is provided at a position corresponding to each crankshaft mounting hole 11 There is a nail hole 14 , and the reinforcing plate 12 is provided with a reinforcing plate hole 13 at a position corresponding to the central hole 5 . The reinforcing plate 12 can be connected to the end of the crankshaft together with the crankshaft mounting portion 10 by providing the nail holes 14 and the reinforcing plate hole 13 , which is used to increase the strength of the crankshaft mounting portion 10 . Further preferably, the right end face of the crankshaft mounting portion 10 is protruded to the right with a number of connecting bosses evenly distributed along the same circumference, and a connecting through hole 8 is opened on the reinforcing plate 12 at a position corresponding to each connecting boss, Each connection boss passes through the corresponding connection through hole 8 and is upset, so as to improve the stability of the connection between the reinforcing plate 12 and the crankshaft mounting portion 10 .

The torque converter mounting part 1 of the present invention is provided with a number of mounting bosses 3 evenly distributed along the same circumference to the right, so as to avoid interference between the installation of the torque converter and the drive plate, and improve the performance of the drive plate and the torque converter. The stability of the connection; the raised structure of the mounting bosses 3 can be provided with stress relief holes on the periphery of each mounting boss 3 to increase the arrangement space of the stress relief holes, so as to increase the rigidity adjustment of the flexible board range, reducing the stress concentration of the flex plate, thereby reducing the risk of fatigue cracking, and increasing the service life of the drive disk.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. These descriptions are not intended to limit the invention to the precise form disclosed, and obviously many changes and modifications are possible in light of the above teachings. The exemplary embodiments were chosen and described for the purpose of explaining certain principles of the invention and their practical applications, to thereby enable one skilled in the art to make and utilize various exemplary embodiments and various different aspects of the invention. Choose and change. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims (9)

1. a gasoline engine drive plate, comprising a flexible plate and a flywheel ring gear that is fixedly sleeved on the flexible plate, it is characterized in that, the flexible plate is sequentially divided into a crankshaft mounting part and a torque variable from the inside to the outside The crankshaft installation part is provided with a central hole and a number of crankshaft installation holes evenly distributed along the same circumference; the torque converter installation part is protruded to the right with a number of installation bosses evenly distributed along the same circumference , each of the mounting bosses is provided with a torque converter mounting hole, and all the torque converter mounting holes are evenly distributed along the same circumference; wherein, the crankshaft mounting part is located on the side of each of the mounting bosses There are stress relief holes all around. 2. The gasoline engine drive disk according to claim 1, wherein the stress relief hole comprises: A plurality of first through holes are arranged in a one-to-one correspondence with the mounting bosses, each of the first through holes is located between the corresponding mounting bosses and the crankshaft mounting portion, and all The first through holes are evenly distributed along the same circumference; wherein, each of the first through holes is an arc-shaped curved hole structure with a concave surface facing outward; and Several second through holes, one second through hole is arranged between two adjacent mounting bosses, all the second through holes are evenly distributed along the same circumference and surround all the first through holes. outside of the hole. 3 . The gasoline engine drive plate according to claim 2 , wherein the area of the second through hole is smaller than that of the first through hole. 4 . 4 . The gasoline engine drive plate according to claim 1 , wherein the right end surface of the crankshaft mounting portion is protruded to the right relative to the right end surface of the torque converter mounting portion, and the crankshaft mounting portion faces toward the right. 5 . The height of the right protrusion is smaller than the height of the right protrusion of the installation boss. 5 . The gasoline engine drive plate according to claim 1 , wherein each of the mounting bosses is integrally formed with the torque converter mounting portion. 6 . 6 . The gasoline engine drive plate according to claim 1 , wherein an annular boss is protruded to the right along the circumferential direction on the edge of the torque converter mounting portion, and the inner circle of the flywheel ring gear is fixedly sleeved. 7 . on the annular boss. 7 . The gasoline engine drive plate according to claim 6 , wherein the annular boss and the torque converter mounting portion are integrally formed. 8 . 8 . The gasoline engine drive plate according to claim 1 , further comprising a reinforcing plate fixedly disposed on the right end face of the crankshaft mounting portion, the reinforcing plate being on the same surface as each of the A nail-passing hole is formed at a position corresponding to the crankshaft installation hole, and a reinforcing plate hole is formed on the reinforcing plate at a position corresponding to the central hole. 9 . The gasoline engine drive plate according to claim 8 , wherein the right end of the crankshaft mounting portion is protruded to the right with a plurality of connecting bosses that are evenly distributed along the same circumference, and the reinforcing plate is connected to each A connecting through hole is formed at a corresponding position of the connecting boss, and each connecting boss passes through the corresponding connecting through hole and is upsized.

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