阅读说明：本技术 具有板簧增强部和为此准备的贴靠板的机动车离合器 (Motor vehicle clutch with leaf spring reinforcement and contact plate prepared therefor ) 是由 M·芬肯策勒 于 2019-08-05 设计创作，主要内容包括：本发明涉及一种用于机动车的离合器(1),所述离合器具有能在对压板(4)的方向上轴向移动的挤压板(2)、连接在所述对压板和所述挤压板之间的板簧(3),所述板簧一方面附接在所述挤压板(2)上并且另一方面附接在所述对压板(4)上,其中,所述板簧(3)具有至少一个预弯曲的凸起部(6),所述凸起部突出到所述挤压板(2)或所述对压板(4)的凹进部(7)中。(The invention relates to a clutch (1) for a motor vehicle, comprising a pressure plate (2) that can be moved axially in the direction of a counter plate (4), a leaf spring (3) connected between the counter plate and the pressure plate, which leaf spring is attached on the one hand to the pressure plate (2) and on the other hand to the counter plate (4), wherein the leaf spring (3) has at least one pre-bent projection (6) that protrudes into a recess (7) of the pressure plate (2) or the counter plate (4).)

1. A clutch (1) for a motor vehicle, having a pressure plate (2) which can be moved axially in the direction of a counterplate (4), a leaf spring (3) connected between the counterplate and the pressure plate, which leaf spring is attached on the one hand to the pressure plate (2) and on the other hand to the counterplate (4), characterized in that the leaf spring (3) has at least one pre-bent projection (6) which projects into a recess (7) of the pressure plate (2) or counterplate (4).

2. Clutch (1) according to claim 1, wherein the leaf spring (3) has two protrusions (6) present on different sides of the leaf spring (3).

3. Clutch (1) according to claim 2, wherein both the pressure plate (2) and the counter-pressure plate (4) have recesses (7) for receiving the protrusions (6) of the leaf spring (3), respectively.

4. Clutch (1) according to any of claims 1 to 3, wherein there are leaf spring legs engaging the protrusions (6) and extending towards the middle of the leaf spring (3), oriented transversely to the axial direction and at an angle α to a radial plane oriented in the radial direction₂-an angle greater than the angle between an imaginary straight line of connection of the leaf spring (3) with the two attachment areas of the pressing plate (2) and the counter-pressure plate (4) with respect to the radial plane.

5. Clutch (1) according to any of claims 1 to 4, wherein the counterplate (4) is configured as a clutch cover.

6. Clutch (1) according to any of claims 1 to 5, characterized in that the recess (7) is configured as a blind hole.

7. Clutch (1) according to any of claims 1 to 6, characterized in that the leaf spring (3) has a thickness that remains constant.

8. Clutch (1) according to any of claims 1 to 7, characterized in that the leaf spring (3) is attached to the pressure plate (2) and/or the counterplate (4) by means of rivets.

9. Clutch (1) according to any of claims 1 to 8, wherein the lobes (6) cross a radial plane twice.

10. Clutch (1) according to any of claims 1 to 9, characterized in that the clutch (1) is provided as a motorcycle clutch.

Technical Field

The invention relates to a clutch for a motor vehicle, for example for a motorcycle, a passenger vehicle, a utility vehicle or another commercial vehicle, having a pressure plate which can be moved axially in the direction of a counterplate/counterplate, a leaf spring connected between the counterplate and the pressure plate, said leaf spring being attached on the one hand to the pressure plate and on the other hand to the counterplate.

Background

In particular, in a motorcycle clutch which is generally provided with a plate spring reinforcement, by using a plate spring as a reinforcement member, most of the moment is guided by the plate spring. Based on the angle of erection of the leaf spring, the circumferential force generated by the torque is converted into an axial force, which preferably increases the pressing force during traction operation, thereby increasing the torque capacity of the clutch. To achieve a corresponding reinforcement, the leaf spring angle must be sufficiently large. This often leads to installation space problems. The angle of erection here generally corresponds to the leaf spring angle, i.e. the angle predetermined by the preforming of the leaf spring/bending spring.

Disclosure of Invention

The object of the invention is to overcome the disadvantages of the prior art and in particular to realize a still more reinforced (motorcycle) clutch with a leaf spring insert. The axial installation space should be kept small. Nevertheless, a large enhancement effect should be achieved.

According to the invention, this object is achieved in a clutch of this type by: the leaf spring has at least one pre-bent projection which projects into a recess/cutout of the pressure plate or counter-pressure plate.

The stiffening effect is also achieved in a limited axial space by erecting the leaf spring and a purposefully preformed leaf spring can be used, wherein the leaf spring is preformed on one or both sides next to the connection point, whereby the erection angle/leaf spring angle becomes larger₁And leaf spring angle α is set in the presence of the pre-form₂. Corresponding recesses are provided in the plate/counter-pressure plate for the preforming. The angle can be increased by preforming, the bending length remaining constant.

Depending on whether the leaf spring is tensioned or bent during the traction operation, the preforming can be used specifically to set the degree of the increase/decrease in the contact pressure and thus to adapt to the respective application. If, for example, the leaf spring is bent during traction operation, the circumferential force to be transmitted causes a further bulging, as a result of which the leaf spring angle increases again and more torque can also be transmitted. In the sliding direction, i.e. when the leaf spring is pulled, it is increasingly lengthened, as a result of which a smaller erection angle is obtained and therefore a smaller reduction in the contact pressure occurs during the sliding operation.

Advantageous embodiments are claimed in the dependent claims and are set forth in detail below.

It is therefore advantageous if the leaf spring has two (near-end) projections which are present on different sides of the leaf spring.

It is also practical for both the pressure plate and the counter-pressure plate to have recesses for receiving the projections of the leaf springs accordingly, the angle α being able to be selected particularly greatly here₂。

An advantageous embodiment is also characterized in that there is a leaf spring leg which is joined to the projection and extends toward the middle of the leaf spring, which leaf spring leg is oriented transversely to the axial direction and at an angle α to a radial plane oriented in the radial direction₂The angle is greater than the angle between an imaginary straight connecting line of the leaf spring with the two attachment areas of the pressing plate and the counter-pressure plate with respect to the radial plane.

The design of the counterplate as a clutch cover enables component savings.

It is also particularly advantageous if the recess/indentation is configured as a (oblong) blind hole. Alternatively, however, the recess can also be designed as a through-hole.

Deep drawing and/or non-cutting manufacturing methods can be relied upon for cost reduction if the leaf spring has a thickness that remains constant.

It has also proven effective for the leaf spring to be attached to the pressing plate and/or counter-pressing plate by means of rivets (respectively).

It is furthermore advantageous if the projection passes through a radial plane twice.

A particularly wide range of applications can be achieved if the clutch is provided as a motorcycle clutch.

In other words, the invention finally relates to a recess for a pre-bent leaf spring in a press plate for using a leaf spring reinforcement. In order to reduce the installation space required in the axial direction, a clutch is proposed in which the pressure plate has a recess into which a preformed section of the leaf spring riveted to the pressure plate projects in order to achieve a more steeply rising leaf spring for utilizing the self-reinforcement. The plate spring is riveted to the counter plate or the clutch cover at the other end thereof. If the leaf spring is riveted to the counter plate, the counter plate can also have a corresponding recess which is combined with a pre-formed section of the leaf spring in the region of the recess. The same applies to the riveting to the clutch cover.

Drawings

The invention is explained in detail below with the aid of the drawings, in which:

figure 1 is a partially shown longitudinal section of a clutch according to the invention,

FIG. 2 is a view of a single leaf spring from a lower perspective, an

Fig. 3 is a side view of the leaf spring of fig. 2 and how the leaf spring is mounted in fig. 1.

The drawings are merely schematic in nature and are used only for the understanding of the present invention. Like elements have like reference numerals.

Detailed Description

Fig. 1 shows a detail of a clutch 1 according to the invention. The clutch 1 is intended for a motorcycle, but can also be used for other motor vehicles.

There is an axially displaceable pressure plate 2 to which the leaf spring 3 is fixed. Furthermore, a counter plate 4 is also present, to which the leaf spring 3 is also fastened. Here, the caulking portions 5 are used to fix the plate spring 3 to the pressing plate 2 and the counter pressing plate 4, respectively.

The leaf spring has a projection 6 which fits into a recess 7 of the compression plate 2. Of course, the counter pressure plate 4 can also have a recess 7 into which the projection 6 of the leaf spring 3 fits.

The leaf springs are shown in isolation in fig. 2 and 3.

The projection 6 is configured in the manner of a dome. There is an eyelet 8 for receiving a rivet of the rivet 5. Each of said holes 8 is configured as a circular through hole.

List of reference numerals

1 Clutch

2 extrusion plate

3 leaf spring

4 pairs of pressing plates

5 riveting part

6 raised part

7 recess

8 holes.