阅读说明：本技术 具有嵌套的部件的用于锥形缠绕式传动装置的锥盘组件 (Cone pulley assembly for a conical wound transmission with nested components ) 是由 K·维格特 M·法尔克 R·克利马 于 2019-02-21 设计创作，主要内容包括：本发明涉及一种用于锥盘缠绕式传动装置的锥盘组件(1),其具有：轴(2),所述轴能够围绕旋转轴线(3)旋转；至少一个轴承(4、5),借助于所述至少一个轴承能够支承所述轴(2)；第一锥盘(6),所述第一锥盘抗扭转地并且在轴向方向(7)上与所述轴(2)固定连接；第二锥盘(8),所述第二锥盘抗扭转地与所述轴(2)连接并且能够相对于所述轴(2)在所述轴向方向(7)上被调整；齿轮(9),所述齿轮与所述轴(2)抗扭转地连接；和用于调整所述第二锥盘(8)的调整机构(10),所述调整机构包括弹簧(11)和活塞(12),其中,所述弹簧(11)和所述活塞(12)与所述齿轮(9)或者与所述至少一个轴承(4、5)在所述轴向方向(7)上至少部分地嵌套。(The invention relates to a conical disk assembly (1) for a conical disk transmission, comprising: a shaft (2) rotatable about a rotation axis (3); at least one bearing (4, 5) by means of which the shaft (2) can be supported; a first conical disk (6) which is fixedly connected to the shaft (2) in a rotationally fixed manner and in an axial direction (7); a second conical disk (8) which is connected to the shaft (2) in a rotationally fixed manner and can be adjusted in the axial direction (7) relative to the shaft (2); a gear (9) which is connected to the shaft (2) in a rotationally fixed manner; and an adjustment mechanism (10) for adjusting the second cone plate (8), the adjustment mechanism comprising a spring (11) and a piston (12), wherein the spring (11) and the piston (12) are at least partially nested with the gear wheel (9) or with the at least one bearing (4, 5) in the axial direction (7).)

1. A cone pulley assembly (1) for a cone pulley transmission, having:

-a shaft (2) rotatable about a rotation axis (3);

-at least one bearing (4, 5) by means of which the shaft (2) can be supported;

-a first conical disk (6) which is fixedly connected to the shaft (2) in a rotationally fixed manner and in an axial direction (7);

-a second cone disk (8) which is connected to the shaft (2) in a rotationally fixed manner and which can be adjusted in the axial direction (7) relative to the shaft (2);

-a gear wheel (9) which is connected to the shaft (2) in a rotationally fixed manner; and

-an adjustment mechanism (10) for adjusting the second cone plate (8), the adjustment mechanism comprising a spring (11) and a piston (12), wherein the spring (11) and the piston (12) are at least partially nested with the gear wheel (9) or with the at least one bearing (4, 5) in the axial direction (7).

2. The cone disc assembly (1) according to claim 1, wherein the spring (11) and the piston (12) are at least partially embedded in the gear wheel (9) or the at least one bearing (4, 5).

3. Cone disc assembly (1) according to any of the previous claims, wherein said gear wheel (9) has an axial recess (13).

4. Cone disc assembly (1) according to any of the previous claims, wherein the at least one bearing (4, 5) has an axial recess (13).

5. The cone disc assembly (1) according to claim 4, wherein the axial recess (13) is configured in a bearing inner ring (14) of the at least one bearing (4, 5).

6. The cone disc assembly (1) according to any one of claims 3-5, wherein the axial hollow (13) is configured as a ring.

7. The cone disc assembly (1) according to any one of claims 3-6, wherein the spring (11) with a first axial end (15) is engaged in the axial recess (13).

8. The cone disc assembly (1) according to any one of claims 3-7, wherein the piston (12) engages with a second axial end (16) into the recess (13).

9. Cone disc assembly (1) according to any of the previous claims, wherein the piston (12) is fastened at the gear wheel (9) or at the at least one bearing (4, 5).

10. Cone disc assembly (1) according to any of the previous claims, wherein the piston (12), the spring (11), the gear wheel (9) and the at least one bearing (4, 5) are arranged adjacent to each other on the shaft (2).

Technical Field

The invention relates to a conical pulley assembly for a conical pulley transmission, for example, according to the type of CVT transmission (continuously variable transmission), preferably for a motor vehicle. In particular, the transmission is used in conjunction with an internal combustion engine or other drive unit for driving a motor vehicle.

Background

Such a cone-pulley transmission generally comprises at least one first cone pulley assembly according to the type of a first cone pulley pair and at least one second cone pulley assembly according to the type of a second cone pulley pair, each having a first cone pulley which can be displaced in the axial direction and a second cone pulley which is fixed in the axial direction, and a winding device arranged between the cone pulley pairs for torque transmission. In order to pretension the winding means, a compression spring in the form of a helical spring is arranged between at least one of the first conical disks and the element that is fixed in the axial direction.

Such a conical pulley transmission with two conical pulley assemblies is known, for example, from DE 19857710 a1, to which reference is made in full to the description of the two conical pulley assemblies or conical pulley transmission. A disadvantage of the known conical pulley transmission is its high installation space requirement and its high weight.

Disclosure of Invention

The invention is based on the object of at least partially overcoming the disadvantages known from the prior art and providing a conical pulley assembly by means of which a conical pulley transmission with low installation space requirements and low weight can be produced.

This object is achieved with a cone disc assembly according to the features of the independent claim. Further advantageous embodiments of the conical disk assembly are given in the dependent claims. It should be noted that the features recited in the dependent claims can be combined with one another in any technically expedient manner and define further embodiments of the invention. In addition, the features specified in the claims are set forth and explained in detail in the description, wherein further preferred embodiments of the invention are shown.

Contributing to this is a cone pulley assembly for a cone pulley transmission, which has at least the following components:

-a shaft rotatable about a rotation axis;

-at least one bearing by means of which the shaft can be supported;

a first conical disk, which is connected fixedly in a rotationally fixed manner and in the axial direction to the shaft;

a second conical disk which is connected to the shaft in a rotationally fixed manner and can be adjusted in the axial direction relative to the shaft;

-a gear wheel connected with the shaft in a rotationally fixed manner; and

-an adjustment mechanism for adjusting the second cone disc, the adjustment mechanism comprising a spring and a piston, wherein the spring and the piston are at least partially nested with the gear or with the at least one bearing in an axial direction.

The transmission of the cone-and-disc type can be a Continuously Variable Transmission (CVT). The cone-pulley transmission can be a gearbox transmission (variatogestriebe). The transmission of the cone pulley type can be arranged in a drive train of a motor vehicle. The transmission ratio of the conical disc winding type transmission device can be adjusted in a stepless mode. The bevel-pulley transmission can have a first pair of bevel pulleys in the form of a first bevel pulley assembly and a second pair of bevel pulleys in the form of a second bevel pulley assembly. The first and second cone disc assemblies can have parallel axes of rotation.

Each cone assembly has a shaft that is rotatable about an axis of rotation. The shaft can be mounted, for example, on a housing of a conical-pulley transmission with at least one bearing. The at least one bearing can be, in particular, a ball bearing, a roller bearing or a tapered roller bearing. In particular, the cone pulley assembly can have a first bearing for supporting the shaft at a first longitudinal end and a second bearing for supporting the shaft at a second longitudinal end.

The cone pulley arrangement has a first cone pulley which is fixedly connected to the shaft in a rotationally fixed manner and in the axial direction (i.e., in particular parallel to the rotational axis). The first conical disk can thus be rotated with the shaft about the axis of rotation, but cannot be adjusted in the axial direction relative to the shaft. The first conical disk can be formed integrally with the shaft. In addition, the even-numbered cone pulley assembly has a second cone pulley which is connected to the shaft in a rotationally fixed manner and can be adjusted in the axial direction relative to the shaft. For this purpose, the shaft can have an external toothing and the second bevel disk can have an internal toothing, by means of which the shaft and the second bevel disk are connected to one another. The second conical disk is rotatable with the shaft about the axis of rotation. The first cone pulley and the second cone pulley are arranged in particular adjacent to one another in the axial direction, so that the winding means of the cone pulley transmission can be guided between the first cone pulley and the second cone pulley. Thereby enabling the bevel disk assembly to be driven by the winding device. In addition, the winding means can thereby be driven by the conical disk assembly. The winding means can be traction means. The winding means can be a chain. The chain can be a plate chain. The chain can have plates and pressure pieces. The pressure piece can be used to couple the winding device with the cone disk pair. The coupling between the pressure element and the conical disk pair can be realized in a friction-locking manner. The plate can be used for the coupling of the pressure element. The winding means can take up an operating position depending on the transmission ratio of the conical-pulley winding transmission. The operating position of the winding means can be changed as the rotation ratio of the conical-pulley transmission changes.

In addition, the conical disk assembly has a gear wheel, which is connected to the shaft in a rotationally fixed manner. The gear wheel has in particular an external toothing. At least one drive wheel of the motor vehicle can be driven, in particular, by means of the gearwheel. In addition, the conical disc assembly can be driven through the gear.

The bevel disk assembly has an adjustment mechanism for adjusting the second bevel disk. The adjustment of the second bevel disk serves in particular to change the transmission ratio of the bevel-disk transmission. The adjusting mechanism comprises a spring, which is constructed, in particular, according to the type of helical spring. The spring is in particular pretensioned. The spring is in particular a compression spring. The first longitudinal side end of the spring is supported, in particular, on the second conical disk, while the second longitudinal side end of the spring is supported, in particular, on a piston of the adjusting mechanism. The piston is in particular connected fixedly to the shaft in a rotationally fixed manner and in the axial direction. The piston is thus able to rotate with the shaft about the axis of rotation. The piston can be a (in particular deep-drawn) sheet metal component. Furthermore, the piston can be of pot-shaped design. The second conical disk can be adjusted in the axial direction in the direction of the first conical disk by means of the spring. The piston can form a pressure chamber with a second conical disk, to which pressure medium, for example hydraulic oil, can be supplied. The second conical disk can be adjusted in particular in the axial direction against the spring force of the spring by means of the pressure medium. The second conical disk can have a tubular section which is guided over the outer circumferential surface of the piston when the second conical disk is adjusted in the axial direction. The outer circumferential surface of the piston can have a receptacle (for example in the form of a groove) in which a seal (for example in the form of a ring seal, a lip seal or an O-ring) can be arranged. The pressure chamber can thereby be sealed off from the surroundings. With regard to other configurations of the conical pulley assembly or of the conical pulley transmission, reference is made to DE 19857710 a1 mentioned at the outset. The accumulator described there corresponds to the spring proposed here.

The spring and the piston are at least partially nested in an axial direction with the gear or with the at least one bearing. This means, in particular, that the spring and the piston at least partially overlap the even-numbered gears or the at least one bearing in the axial direction. The conical disk assembly can thereby be constructed in a particularly compact and therefore lightweight manner.

The spring and the piston can engage at least partially in the gear or in the at least one bearing.

The gear can have an axial recess. Thereby, the spring and the piston can be embedded into the axial recess of the gear.

The at least one bearing can have an axial recess. Thereby, the spring and the piston can be embedded into the axial recess of the at least one bearing.

The axial recess can be formed in a bearing inner ring of the at least one bearing.

The axial recess can be designed in the form of a ring. The axial recess can thus extend 360 ° around the shaft.

The spring can engage with the first axial end into the axial recess.

The piston can engage with the second axial end into the recess.

The piston can be fastened at the gear or at the at least one bearing. For this purpose, the piston can have an outer diameter in the region of the recess of the gear or of the at least one bearing (substantially) corresponding to the inner diameter of the recess.

The piston, the spring, the gear and the at least one bearing can be arranged adjacent to each other on the shaft.

Drawings

The invention and the technical field are explained in detail below with reference to the drawings. It should be noted that the figures show a particularly preferred variant of the invention, but the invention is not limited thereto. Exemplarily and schematically showing:

FIG. 1: a longitudinal cross-sectional view of the cone and disk assembly.

Detailed Description

Fig. 1 shows a longitudinal section through a conical disk unit 1. The cone assembly 1 has a shaft 2 which is rotatable about an axis of rotation 3. The shaft 2 can be mounted with a first bearing 4 and a second bearing 5 on a housing, not shown here, of the conical-pulley transmission. The first bearing 4 and the second bearing 5 are configured according to the type of ball bearing. Furthermore, the first bearing 4 has a bearing inner ring 14 and a bearing outer ring 18. The first conical disk 6 is formed integrally with the shaft 2. The first conical disk 6 is thereby connected fixedly to the shaft 2 in a rotationally fixed manner and in the axial direction 7. The first conical disk 6 can rotate with the shaft 2 about the axis of rotation 3. The second conical disk 8 is also connected to the shaft 2 in a rotationally fixed manner via the left toothing 20. The second cone 8 can thus rotate with the shaft 2 about the axis of rotation 3. In addition, the second conical disk 8 can be adjusted in the axial direction 7 relative to the shaft 2. For adjusting the second conical disk 8, the conical disk assembly 1 has an adjusting mechanism 10 which comprises a spring 11 and a piston 12. The spring 11 is a helical spring which is supported with one longitudinal side end on the second conical disk 8 and with the opposite longitudinal side end on the gear wheel 9. The gear wheel 9 is connected fixedly to the shaft 2 in a rotationally fixed manner and in the axial direction 7. The spring 11 is prestressed so that it presses the second conical disk 8 in the axial direction 7 in the direction of the first conical disk 6. This enables the second conical disk 8 to be adjusted in the axial direction 7 in the direction of the first conical disk 6 by means of the spring 11. During the setting of the second conical disk 8, the tubular section 19 of the second conical disk 8 slides with the inner circumferential surface 21 along the radially outer circumferential surface 22 of the piston 12. On the outer circumferential surface 22, the piston 12 has a circumferential groove 23, in which a seal 24 is arranged, depending on the type of sealing ring. The seal 24 seals the pressure chamber 17 for the pressure medium from the surroundings. By means of the pressure medium, the second conical disk 8 can be moved away from the first conical disk 6 in the radial direction 7 against the spring force of the spring 11, so that the distance between the first conical disk 6 and the second conical disk 8 increases. The gear 9 has an annular recess 13 into which the spring 11 engages with its first axial end 15 and the piston 12 engages with its second axial end 16 and is therefore nested with the gear 9. Furthermore, the piston 12 is fastened with its second axial end 16 at the recess 13 of the gear wheel 9. In an alternative embodiment, the position of the gear 9 and the position of the first bearing 4 can be interchanged, and the recess 13 can be formed in the bearing inner ring 14 of the first bearing 4.

By means of the invention, a conical disk assembly for a conical disk winding transmission can be configured particularly compactly and easily.

List of reference numerals

1 Cone disc assembly

2 axle

3 axis of rotation

4 first bearing

5 second bearing

6 first conical disk

7 axial direction

8 second cone plate

9 Gear

10 adjustment mechanism

11 spring

12 piston

13 hollow

14 bearing inner ring

15 first axial end portion

16 second axial end

17 pressure chamber

18 bearing outer ring

19 tubular section

20 longitudinal toothing

21 inner peripheral surface

22 peripheral surface

23 groove

24 seal