Pressing plate bearing

Abstract

A pressing plate bearing comprises a pressing plate and a bearing body, the bearing body comprises an outer ring, an inner ring and a rolling body located between the outer ring and the inner ring, and an assembly groove is formed in one side of the outer diameter face of the outer ring in the radial direction. The assembling groove is provided with an assembling face extending in the radial direction and a limiting face extending in the axial direction from the edge of the outer diameter face of the outer ring to the center, the limiting face is matched with the pressing plate to calibrate the machining position, and a gap exists between the assembling face and the pressing plate in the radial direction before assembling. The assembling surface is provided with a riveting groove extending towards the center direction of the bearing, the pressing plate is provided with a riveting convex point corresponding to the riveting groove, and the pressing plate and the outer ring are fixed by riveting the riveting convex point into the riveting groove. The pressing plate bearing has the beneficial effects that according to the technical scheme of the pressing plate bearing, the design of a clamping ring of the pressing plate is omitted, so that the assembly structure is simplified, the number of parts needing to be assembled is reduced, and the manufacturing cost and the assembly complexity are reduced.

Description

Technical Field

[0001] The utility model relates to a bearing, in particular to a pressure plate bearing. Background Art

[0002] Pressure plate bearings, also known as clutch bearings, are specialized bearings used in transmissions, designed to withstand high loads and high speeds. These bearings are designed to transmit engine power to the transmission while absorbing both axial and radial loads. A key feature of pressure plate bearings is their preload, which reduces internal bearing clearance, improves bearing rigidity and rotational accuracy, and ensures smooth and reliable power transmission. In transmissions, the stability and durability of pressure plate bearings are crucial, as they directly impact transmission efficiency and vehicle performance. Precise preload and optimized design of pressure plate bearings help reduce noise and vibration, extend transmission life, and enhance driver comfort.

[0003] Chinese patent document CN215980436U discloses a pressure plate bearing unit, belonging to the field of bearing technology. It includes a pressure plate, a bearing, and a retaining ring sandwiched between the pressure plate and the bearing. The outer ring of the bearing has a radially inward-concave retaining groove. The inner diameter end surface of the pressure plate has several connecting grooves. At the same time, its inner diameter surface also has a radially inward-concave annular groove along its circumference, which is axially connected to the connecting groove. The retaining ring includes a claw and an annular retaining protrusion. The claw is fixed in the annular groove through the connecting groove, and the retaining protrusion engages with the retaining groove.

[0004] However, the above scheme is easy to deform during installation, and there are risks such as the pressure plate falling off and the retaining ring getting stuck. In addition, since the retaining ring needs to be fixed to the outer ring of the bearing through the retaining convex points and fixed to the pressure plate through the retaining claws, this installation process is difficult to automate and has low production efficiency. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a pressure plate bearing that is easier to process.

[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is as follows: a pressure plate bearing, comprising a pressure plate and a bearing, the bearing comprising an outer ring, an inner ring and a rolling body located between the two, an assembly groove is provided on one side of the radial direction on the outer diameter surface of the outer ring, and the assembly groove is respectively provided with an assembly surface extending radially and a limiting surface extending axially from the edge of the outer diameter surface of the outer ring toward the center, the limiting surface cooperates with the pressure plate to calibrate the processing position, and there is a radial gap between the assembly surface and the pressure plate before assembly; a rivet groove extending toward the center direction of the bearing is provided on the assembly surface, and a rivet protrusion is provided on the pressure plate corresponding to the rivet groove, and the pressure plate and the outer ring are fixed together by riveting the rivet protrusion into the rivet groove.

[0007] The beneficial effects of the present invention are as follows: the pressure plate bearing technical solution simplifies the assembly structure and reduces the number of parts required for assembly by eliminating the retaining ring design of the pressure plate, thereby reducing manufacturing costs and assembly complexity. This design makes the bearing assembly more concise, facilitates automated assembly, and improves production efficiency. At the same time, the design of the assembly groove allows for precise fit and positioning between the pressure plate and the outer ring, ensuring the stability and reliability of the bearing. The combined use of riveted bumps and riveted grooves provides a firm connection method, enhances the fixing strength between the pressure plate and the outer ring, makes the bearing more stable during operation, and extends its service life. Overall, this design not only simplifies the assembly process, but also improves the performance and durability of the bearing, and has significant beneficial effects on the long-term stable operation of the bearing and the reduction of maintenance costs. All of the above solutions are combined to provide an effective motion path for it during automated assembly, thereby facilitating automated assembly.

[0008] Furthermore, the assembly surface and the limiting surface are connected via a guide surface, and the pressure plate is provided with a yield surface corresponding to the guide surface. When the pressure plate abuts against the limiting surface, a yield space is formed between the yield surface and the guide surface.

[0009] In this pressure plate bearing technology solution, the assembly surface and the limit surface are connected by a guide surface, which, together with the clearance surface on the pressure plate, forms a clearance space. This design plays a key role in the riveting process. When the pressure plate rests on the limit surface, the existence of the clearance space effectively prevents direct collision between the pressure plate and the outer ring, thereby avoiding possible damage to the outer ring during the riveting process. This design not only protects the outer ring, but also reduces the risk of bearing failure caused by damage to the outer ring, thereby improving the reliability and durability of the bearing. At the same time, the design of the clearance space also helps to simplify the assembly process because it allows the pressure plate a certain amount of room to move during riveting, reducing the complexity and precision requirements of the assembly process. Overall, this design improves the overall performance and service life of the bearing by reducing potential damage during the assembly process, and has a significant beneficial effect on improving production efficiency and reducing maintenance costs.

[0010] Furthermore, the guide surface is an arc-shaped surface, the giving way surface is an inclined surface, and the inclination angle of the giving way surface makes the giving way space be arranged in a bow shape.

[0011] In this pressure plate bearing technology, the guide surface is designed as an arcuate surface, while the clearance surface is an inclined surface. This design creates an arched clearance space, which has several beneficial effects. First, the arcuate guide surface smoothly guides the fit between the pressure plate and the outer ring, reducing friction and wear during assembly, thereby improving assembly efficiency and bearing durability. Second, the inclined clearance surface combined with the arcuate guide surface forms an arched clearance space. This spatial structure provides greater flexibility and cushioning during riveting, effectively avoiding direct contact between the pressure plate and the outer ring, and reducing the risk of outer ring damage.

[0012] Furthermore, a deformation notch is provided on the end face of the riveted protrusion close to one end of the yield surface, and the deformation notch is composed of a riveted surface extending radially and connected to the yield surface at one end, and a deformation surface connected to the riveted surface at one end and arranged at an angle, and a deformation space is formed between the deformation surface and the riveted groove. When riveting, the riveted surface first contacts the assembly surface and applies a deformation force to the deformation surface to gradually reduce the deformation space.

[0013] In this pressure plate bearing technology, a deformation notch is provided on the end face of the rivet point near the relief surface. This design plays a key role in protecting the outer ring from invisible damage during the riveting process. The deformation notch consists of a radially extending rivet surface and an inclined deformation surface, creating a deformation space between them. During the riveting process, the rivet surface first contacts the assembly surface, then applies a deformation force to the deformation surface, gradually reducing the deformation space until the rivet point is fully riveted into the riveting groove. This design prevents the deformation surface from continuously applying pressure to the outer ring throughout the riveting process, thereby preventing potential invisible damage to the outer ring. By controlling the application of the deformation force and reducing the deformation space, this solution ensures the accuracy and reliability of the riveting process, while protecting the integrity of the outer ring, extending the bearing's service life, and improving its stability during long-term operation. Overall, this design, by precisely controlling the force distribution during the riveting process, effectively prevents damage to the outer ring, improves the overall performance and durability of the bearing, and has a significant beneficial effect on ensuring safe operation of the bearing under various operating conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is an axonometric diagram of an embodiment of the present utility model;

[0015] Figure 2 This is a partial enlarged view of the pressing plate of an embodiment of the present utility model;

[0016] Figure 3 This is a partial enlarged view of the assembled embodiment of the utility model. DETAILED DESCRIPTION

[0017] The utility model embodiment of a pressure plate bearing as Figure 1-3As shown: it includes a pressure plate 1 and a bearing 2, and the bearing 2 includes an outer ring 3, an inner ring (not shown in the figure) and a rolling element (not shown in the figure) located between the two.

[0018] An assembly groove 31 is provided on one side of the radial direction of the outer diameter surface of the outer ring 3. The assembly groove 31 is provided with an assembly surface 311 extending radially, a limiting surface 312 extending axially and a guide surface 313 for connecting the above two and being an arc-shaped surface from the edge of the outer diameter surface of the outer ring 3 toward the center. The limiting surface 312 cooperates with the pressure plate 1 to calibrate the processing position. There is a radial gap between the assembly surface 311 and the pressure plate 1 before assembly; a rivet groove 314 extending toward the center direction of the bearing 1 is provided on the assembly surface 311.

[0019] The end faces of the pressure plate 1 corresponding to the assembly groove 31 are, from the outermost edge toward the center thereof, a rest surface 11, a riveting protrusion 12 arranged corresponding to the riveting groove 314, and a relief surface 13 arranged corresponding to the guide surface 313 and being an inclined surface, and a bow-shaped relief space 4 is formed between the relief surface 13 and the guide surface 313. A deformation notch 121 is provided on the end face of the riveting protrusion 12 near one end of the yield surface 13. The deformation notch 121 is composed of a riveting surface 123 extending radially and connected to the yield surface 13 at one end, and a deformation surface 122 connected to the riveting surface 123 at one end and arranged at an angle. The outer diameter of the riveting surface 123 is larger than the outer diameter of the abutting surface 11. The outer diameter difference between the two can be set as the interference fit between the pressure plate 1 and the outer ring 3. A deformation space 5 is formed between the deformation surface 122 and the riveting groove 314. The riveting surface 123 partially overlaps with the assembly surface 311 along the radial direction, and the riveting surface 123 first contacts the assembly surface 311 during riveting and applies a deformation force to the deformation surface 122 to gradually reduce the deformation space 5.

[0020] The installation process of this embodiment is as follows: first, the pressure plate 1 is guided axially from the assembly surface 311 to abut against the limit surface 312. At this time, a certain gap is formed between the pressure plate 1 and the assembly groove 31; then, riveting pressure is applied to the pressure plate 1. At this time, the riveting surface 123 first contacts the assembly surface 311 and because part of it contacts the assembly surface 311, it can well transmit the deformation force to the deformation surface 122 and cause it to deform, so as to gradually reduce the deformation space 5 until the abutting surface 11 abuts against the assembly surface 311 to complete the riveting process.

[0021] The above embodiment is only one preferred embodiment of the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. A pressure plate bearing, comprising a pressure plate and a bearing, wherein the bearing comprises an outer ring, an inner ring, and a rolling element located therebetween, characterized in that: An assembly groove is provided on one side of the radial direction of the outer diameter surface of the outer ring, and the assembly groove is respectively provided with an assembly surface extending radially and a limiting surface extending axially from the edge of the outer diameter surface of the outer ring toward the center, and the limiting surface cooperates with the pressure plate to calibrate the processing position, and there is a radial gap between the assembly surface and the pressure plate before assembly; a rivet groove extending toward the center direction of the bearing is provided on the assembly surface, and a rivet convex point is provided on the pressure plate corresponding to the rivet groove, and the pressure plate and the outer ring are fixed together by riveting the rivet convex point into the rivet groove.

2. The pressure plate bearing according to claim 1, characterized in that: The assembly surface and the limiting surface are connected via a guide surface, and the pressure plate is provided with a yielding surface corresponding to the guide surface. When the pressure plate abuts against the limiting surface, a yielding space is formed between the yielding surface and the guide surface.

3. The pressure plate bearing according to claim 2, characterized in that: The guide surface is an arc-shaped surface, the giving way surface is an inclined surface, and the inclination angle of the giving way surface makes the giving way space be arranged in an arch shape.

4. The pressure plate bearing according to claim 2, characterized in that: A deformation notch is provided on the end face of the riveting protrusion close to one end of the yield surface. The deformation notch is composed of a riveting surface extending radially and connected to the yield surface at one end, and a deformation surface connected to the riveting surface at one end and arranged at an angle. A deformation space is formed between the deformation surface and the riveting groove. When riveting, the riveting surface first contacts the assembly surface and applies a deformation force to the deformation surface to gradually reduce the deformation space.

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