Bearing unit and method for assembling a bearing unit

Abstract

The invention relates to a bearing unit and a method for assembling a bearing unit. The bearing unit comprises a rolling bearing having an outer ring (2) with an end section (21) and an adjacent section (22), the outer diameter of the adjacent section (22) being at least locally greater than the outer diameter of the end section (21), a slide groove (23) being configured on the peripheral surface of the end section (21) in the circumferential direction; a press plate (1) having a through-hole and surrounding the end section (21) in a loose fit through the through-hole, the press plate (1) being configured with a slide accommodator (13) and a lock accommodator (14); a slide (3) arranged in the slide accommodator (13); and a lock (4) fixed in the lock accommodator (14), wherein the slide (3) is locally accommodated in the slide groove (23) by means of the lock (4), thereby fixing the press plate (1) in a relatively rotatable manner at the outer ring (2).

Description

Technical Field

[0001] This invention relates to a bearing unit. This invention also relates to a method for assembling the bearing unit. Background Technology

[0002] Bearing units are used in a variety of industrial and technical fields. Here, bearing units are used to support rotating shafts within a relatively fixed housing. For example, in a vehicle transmission, a bearing unit can support various rotatable shafts on the transmission housing. Therefore, it is necessary to achieve connection or mating with rolling bearings at the corresponding support locations on the shafts and housing.

[0003] A bearing unit typically consists of a rolling bearing and a pressure plate. During assembly, the inner ring of the rolling bearing is usually pushed onto and locked onto a shaft. The outer ring of the rolling bearing is mounted to the housing via the pressure plate. In this case, the pressure plate and the housing are connected to each other, for example, by bolts. The outer ring of the rolling bearing can be mounted on the pressure plate in various ways.

[0004] For example, German patent document DE 103 55 363 B4 discloses a method for manufacturing a bearing unit, which includes a rolling bearing and a bearing pressure plate, wherein a plastic injection molded part is constructed between the bearing outer ring and the pressure plate, thereby fixing the outer ring and the pressure plate in the axial and radial directions.

[0005] For example, German patent document DE 10 2016 207 507 A1 discloses a bearing unit in which the hole of the pressure plate is loosely fitted onto the outer side of the outer ring of a rolling bearing. The inner diameter of the pressure plate hole has circumferentially distributed claws. During assembly, the pressure plate is first pushed into the stepped surface of the outer ring, and then a pressing tool is used to press the claws of the pressure plate into the grooves on the outer circumferential surface of the outer ring, thereby completing the assembly.

[0006] However, for example, in the aforementioned fixed connection scheme of the pressure plate and the outer ring of the rolling bearing, when the pressure plate and the outer ring are relatively fixed in the axial and radial directions, factors such as the tolerance chain of individual components may make it difficult to install the pressure plate in the housing, leading to an increased scrap rate. Another example is the aforementioned scheme with a chuck, where the chuck undergoes plastic deformation during installation, and due to its small size, it is prone to breakage or abnormal deformation. When the chuck breaks, the small fragments can affect cleanliness. If these fragments enter the bearing, they will reduce its service life. Furthermore, chuck breakage may also affect the connection between the pressure plate and the bearing; when the chuck deforms abnormally, it may become stuck in the slot, preventing the pressure plate and the outer ring from rotating freely in the circumferential direction. Additionally, this scheme has high requirements for heat treatment stability. Due to issues such as the elliptical deformation of the outer ring after heat treatment, even if the protrusions are of uniform size after the chuck is pressed in, some positions may have poor constraint, leading to the pressure plate detaching. As a result, the processing cost of the bearing unit is relatively high. In order to reduce the shedding rate, the only current method is to machine the heat-treated stepped surface to ensure its fit with the inner diameter of the pressure plate. Summary of the Invention

[0007] Therefore, the technical problem to be solved by the present invention is to provide a bearing unit that is easy to assemble and has a low cost.

[0008] The aforementioned technical problem is solved in one aspect of the present invention by a bearing unit comprising: a rolling bearing having an outer ring, wherein the outer ring has an end section located at an axial end and an adjacent section axially adjacent to the end section, wherein the outer diameter of the adjacent section is at least partially larger than the outer diameter of the end section, wherein a circumferentially extending groove is formed on the outer peripheral surface of the end section; a pressure plate having a through hole and loosely fitting around the end section through the through hole, wherein the pressure plate is configured with a sliding member receiving portion and a locking member receiving portion, the sliding member receiving portion being open toward an axial end side away from the adjacent section and being open toward a radially inward side, the locking member receiving portion being open toward an axial end side away from the adjacent section and communicating with the sliding member receiving portion radially outward from the sliding member receiving portion; a sliding member disposed in the sliding member receiving portion; and a locking member fixed in the locking member receiving portion, wherein the sliding member is partially received in the groove by means of the locking member, thereby fixing the pressure plate at the outer ring in a rotatable manner.

[0009] The bearing unit provided according to the present invention is particularly useful for supporting rotating components, such as rotating shafts, to mechanical members. The mechanical members are, in particular, relatively fixed components, such as non-rotating housings. The rolling bearing of the bearing unit includes an inner ring and an outer ring. The inner ring can be fixedly connected to the rotating component, such as a rotating shaft. The outer ring can be rotatably mounted on a pressure plate, which can be fixedly mounted to the mechanical member.

[0010] Specifically, mechanical components, such as the gearbox housing, can be supported by bearing units to rotatably support the drive shaft in the gearbox at the gearbox housing.

[0011] Advantageously, the pressure plate can be used to mount one or more rolling bearings onto the same mechanical component. In this case, the number of through holes in the pressure plate for surrounding the rolling bearings matches the number of rolling bearings to be mounted. Rolling bearings mounted on the same pressure plate can have the same or different dimensions. Rolling bearings mounted on the same pressure plate can be the same or different types of bearings.

[0012] In this specification, a bearing unit with a single rolling bearing is described by way of example. Therefore, within the scope of this specification, unless otherwise stated, the terms "circumferential," "axial," and "radial" refer to the "circumferential," "axial," and "radial" directions of the single rolling bearing. Ideally, the bore of the pressure plate is arranged coaxially with the rolling bearing, and deviations due to its loose fit with the outer ring are not considered here.

[0013] Here, the outer ring of the rolling bearing comprises at least two sections along the axial direction: an end section located at the axial end and an adjacent section axially adjacent to the end section. Optionally, the outer diameter of the adjacent section is larger than the outer diameter of the end section throughout the circumferential direction. Here, the adjacent section is configured, for example, as an annular shoulder protruding relative to the end section. Optionally, the adjacent section is configured with at least one protruding structure in the circumferential direction, the distance of the radial outer surface of the protruding structure relative to the central axis of the outer ring being greater than the distance of the outer circumferential surface of the end section relative to the central axis of the outer ring. Here, the adjacent section is configured, for example, as at least two circumferentially distributed shoulders protruding relative to the end section.

[0014] Here, the pressure plate is configured with a structure for connection to a mechanical component, such as a lug with a mounting hole. Additionally, the pressure plate is configured with a structure for positioning relative to the mechanical component. The through-hole of the pressure plate loosely fits around the end section of the outer ring of the rolling bearing. The pressure plate includes a first axial end face facing away from the adjacent end of the outer ring and a second axial end face facing the adjacent section of the outer ring.

[0015] An axial locking mechanism is provided here, capable of rotatably connecting an outer ring and a pressure plate. The axial locking mechanism includes: a slider, a locking member, a groove constructed at the end section of the outer ring, and a slider receiving portion and a locking member receiving portion constructed at the pressure plate. Here, the slider is configured with a sliding end capable of sliding in the groove and a locking member contact end for contacting the locking member. The locking member is configured with a top end and a bottom end, particularly defined according to its direction of movement during assembly.

[0016] When the bearing unit is assembled, the sliding member is slidably accommodated in the groove of the outer ring at its sliding end and in the sliding member receiving portion of the pressure plate by the locking member contact portion. Axially, the sliding member is defined on the first axial end face by the groove of the outer ring, particularly the groove wall, and on the second axial end face by the groove of the outer ring, particularly the groove wall, and the sliding member receiving portion of the pressure plate. Radially, the sliding member is defined radially inward by the groove of the outer ring, particularly the groove bottom, and radially outward by the locking member. Here, the locking member is arranged such that the sliding member does not fall off the bearing unit due to the radial limitation of the locking member, while maintaining the sliding member's rotational ability relative to the groove of the outer ring; that is, the locking member does not excessively compress the sliding member radially in the assembled state, causing the sliding member to jam in the groove and lose its rotational ability. Advantageously, the shape and size of the locking member and the locking member receiving portion can be adapted such that the locking member can be fixed in the locking member receiving portion in a form-fit manner, preferably a tight fit. Here, the locking element receiving portion is constructed, for example, as a through hole or a blind hole.

[0017] Advantageously, at least two axial locking mechanisms can be arranged in the circumferential direction of the bearing unit, thereby enabling a more stable connection between the pressure plate and the outer ring that can rotate relative to each other.

[0018] In the case of the aforementioned axial locking mechanism, the pressure plate achieves axial stop on the first axial end face by limiting the sliding member through a groove, and the pressure plate achieves axial stop on the second axial end face by the shoulder of the adjacent section of the outer ring. Furthermore, since the through hole of the pressure plate loosely fits around the end section of the outer ring and the sliding member maintains its rotational capability relative to the groove, the pressure plate can also rotate relative to the outer ring within the extension range of the groove by sliding the sliding member in the circumferentially extending groove.

[0019] In a preferred embodiment, the sliding end of the slider is smoothly constructed. This facilitates the sliding of the slider relative to the groove of the outer ring.

[0020] Advantageously, the groove shape of the slide is matched to the shape of the sliding end of the slider. Here, the groove shape can be understood as the cross-sectional shape of the slide. With the help of the matching shape, the sliding end of the slider can be stably accommodated in the slide, thereby maintaining the circumferential rotational capability of the pressure plate while minimizing the axial sliding of the slider relative to the pressure plate, and thus reducing the axial wobble of the pressure plate relative to the outer ring. This design effectively prevents the pressure plate from falling off, especially when there is a tendency for it to do so.

[0021] Here, it is particularly advantageous that the sliding end of the slider is spherical and the groove is arc-shaped, thereby enabling the slider to stop axially and / or radially relative to the pressure plate in a cost-effective and reliable manner while ensuring the rotational capability of the pressure plate relative to the outer ring.

[0022] In a preferred embodiment, the groove at the outer ring is constructed as an annular groove. In this case, the pressure plate can rotate freely relative to the outer ring.

[0023] In one alternative embodiment, the groove at the outer ring is constructed as a plurality of slots distributed along the circumferential direction, each slot extending at least a certain distance along the circumference, so that the pressure plate can rotate relative to the outer ring within a certain range. In this case, the positions of the slots on the outer ring and the positions of the sliding receiving portions of the pressure plate correspond to each other in the circumferential direction. In this case, the pressure plate can rotate relative to the outer ring in a restricted manner.

[0024] In a preferred embodiment, the locking contact end and / or the top end of the slider are tapered toward the corresponding free end. In this case, the radial dimension of the locking contact end of the slider gradually decreases toward the locking member, and / or the radial dimension of the top end of the locking member gradually decreases toward the slider, especially during assembly. In particular, after the slider is placed into the receiving space formed by the communicating slider receiving portion and the locking receiving portion, by constructing a tapered structure at at least one of the locking contact end and the top end of the locking member, the locking member can be easily inserted into the radially outer space of the slider at the beginning of assembly, and during the process of penetrating into the locking receiving portion, the slider is forced to move in a direction inclined to, especially perpendicular to, the direction of movement of the locking member by its own movement, so that the slider can eventually partially enter the groove at the outer ring.

[0025] Advantageously, the locking contact end and / or the top of the locking member of the slider are spherical. The tapered structure of the spherical shape is easy to manufacture and process and helps to ensure that the slider moves smoothly toward the groove.

[0026] Here, it is particularly advantageous that the slider is constructed as a sphere. In this case, the slider can not only slide relative to the groove but also roll. Furthermore, since the arrangement direction of the slider in the slider receiving part does not need to be considered, assembly efficiency can be improved.

[0027] Here, it is particularly advantageous that the slider is constructed as a pin, having a cylindrical intermediate section and spherical ends on both axial sides of the intermediate section. In this case, the slider can advantageously achieve sliding relative to the groove and movement during assembly by means of the locking member. Furthermore, since the sliding end of the slider and the contact end of the locking member are constructed identically in this embodiment, they can act interchangeably, thus simplifying assembly and improving assembly efficiency.

[0028] Advantageously and alternatively, the locking contact end of the slider is tapered. Alternatively, the top end of the locking member is tapered. This tapered structure is easy to manufacture or process.

[0029] In a preferred embodiment, the bottom end of the locking member opposite the top end is constructed as a plane, thereby enabling the locking member to be provided at the lowest possible cost and facilitating the press-fitting of the locking member in the locking member receiving portion.

[0030] In a preferred embodiment, the sliding member receiving portion extends radially and / or the locking member receiving portion extends axially. Particularly when the sliding member receiving portion extends radially and the locking member receiving portion extends axially, the sliding member receiving portion and the locking member receiving portion can form an integrally L-shaped receiving space. This facilitates the manufacture of the pressure plate and improves the assembly efficiency of the bearing unit. Advantageously, the sliding member receiving portion is constructed as a cuboid groove. Advantageously, the locking member receiving portion is constructed as a circular hole.

[0031] The above-mentioned technical problem is also solved by another aspect of the present invention through a method for assembling a bearing unit, the method comprising the following steps:

[0032] a) Provide an outer ring, pressure plate, sliding member, and locking member for a bearing unit according to the above embodiments;

[0033] b) Move the pressure plate and / or the outer ring such that the pressure plate loosely fits around the end section of the outer ring through its through hole, and such that the sliding receiving portion of the pressure plate and the groove of the end section are aligned with each other.

[0034] c) Place the slider into the receiving space formed by the connected slider receiving part and the locking receiving part;

[0035] d) Insert the locking member into the locking member receiving part, so that the sliding member is partially moved into the groove by the pushing of the locking member.

[0036] The outer ring provided herein has an end section located at an axial end and an adjacent section axially adjacent to the end section, wherein the outer diameter of the adjacent section is at least partially larger than the outer diameter of the end section, and wherein a groove extending in a circumferential direction is formed on the outer peripheral surface of the end section.

[0037] The pressure plate provided herein has a through hole, wherein the pressure plate is configured with a sliding member receiving portion and a locking member receiving portion, the sliding member receiving portion being open toward the first axial end side of the pressure plate and being open toward the radially inward side, and the locking member receiving portion being open toward the first axial end side of the pressure plate and communicating with the sliding member receiving portion on the radially outward side of the sliding member receiving portion.

[0038] The solution according to the present invention avoids the hard contact in the existing bearing unit press-fit process, preventing phenomena such as uneven press-fitting at the chuck connection points and ensuring bearing cleanliness. Furthermore, the opening of the pressure plate is easier to machine than the chuck, resulting in lower costs. The bearing unit installation process according to the present invention is simple. Using the method for assembling bearing units proposed herein, a heating step is eliminated during assembly, as is done in some existing solutions, thus making assembly efficient and rapid. The design of the sliding element matching the groove shape ensures stable and reliable axial and / or radial stops on the pressure plate, eliminating the possibility of pressure plate detachment. Attached Figure Description

[0039] Preferred embodiments of the present invention will now be illustrated schematically with reference to the accompanying drawings. The drawings are as follows:

[0040] Figure 1 This is a perspective view of a bearing unit according to a preferred embodiment;

[0041] Figure 2 yes Figure 1 A magnified view of a portion of the image;

[0042] Figure 3 It is based on Figure 1 A partial axial cross-sectional view of the bearing unit in the illustrated embodiment;

[0043] Figure 4 It is based on Figure 1 A perspective view of the outer ring of the bearing unit in the illustrated embodiment;

[0044] Figure 5 It is based on Figure 4 A partial sectional view of the outer ring in three dimensions is shown.

[0045] Figure 6 It is based on Figure 1 A perspective view of the sliding element of the bearing unit in the illustrated embodiment;

[0046] Figure 7 It is based on Figure 1 A perspective view of the locking element of the bearing unit in the illustrated embodiment;

[0047] Figure 8 It is based on Figure 1 A front view of the pressure plate of the bearing unit in the illustrated embodiment;

[0048] Figure 9 It is based on Figure 8 A partial perspective view of the pressure plate shown;

[0049] Figure 10 yes Figure 8 A magnified view of a portion of the image;

[0050] Figure 11 It is used for assembly according to Figure 1 The steps of the method for the bearing unit in the illustrated embodiment;

[0051] Figure 12 It is used for assembly according to Figure 1 The steps of the method for the bearing unit in the illustrated embodiment;

[0052] Figure 13 It is used for assembly according to Figure 1 The steps of the method for the bearing unit in the illustrated embodiment;

[0053] Figure 14 It is used for assembly according to Figure 1 The steps of the method for the bearing unit in the illustrated embodiment;

[0054] Figure 15 It is used for assembly according to Figure 1 The steps of the method for the bearing unit in the illustrated embodiment are shown. Detailed Implementation

[0055] Figure 1 This is a perspective view of a bearing unit according to a preferred embodiment. The bearing unit shown according to this embodiment can be used to rotatably support a drive shaft in a gearbox at the gearbox housing.

[0056] Figure 2 yes Figure 1 A magnified view of a portion of the image. Figure 3 It shows according to Figure 1 A partial axial sectional view of the bearing unit in the illustrated embodiment. (See attached image.) Figures 1 to 3 As shown, the bearing unit according to this embodiment includes a pressure plate 1, a rolling bearing, and an axial locking mechanism that can rotatably connect the outer ring 2 of the rolling bearing and the pressure plate 1.

[0057] The rolling bearing of the bearing unit can be constructed as needed. The rolling bearing includes an inner ring 5 and an outer ring 2. In this embodiment, the inner ring 5 can be fixedly connected to the drive shaft in the gearbox. The rolling bearing may also include other necessary components, such as one or at least two rows of rolling elements (not shown) arranged between the outer ring 2 and the inner ring 5. Figure 1 As shown, the rolling bearing may also include a seal 6 that provides a seal between the outer ring 2 and the inner ring 5 on the axial end side.

[0058] In this embodiment, the outer ring 2 of the rolling bearing is as follows: Figure 4 and Figure 5 shown. Specifically, Figure 4 It is based on Figure 1 A perspective view of the outer ring 2 of the bearing unit in the illustrated embodiment; Figure 5It is based on Figure 4 A partial sectional view of the outer ring 2 in perspective is shown. In this embodiment, the outer ring 2 of the rolling bearing includes two sections along the axial direction: an end section 21 located at the axial end and an adjacent section 22 axially adjacent to the end section 21. The adjacent section 22 is constructed as an annular shoulder protruding relative to the end section 21. In this case, the outer diameter of the adjacent section 22 is larger than the outer diameter of the end section 21 throughout the circumferential direction.

[0059] In this embodiment, the pressure plate 1 of the bearing unit is as follows: Figures 8 to 10 shown. Specifically, Figure 8 It is based on Figure 1 The front view of the pressure plate 1 of the bearing unit in the illustrated embodiment is shown. Figure 9 It is based on Figure 8 A partial perspective view of the pressure plate 1 shown; Figure 10 yes Figure 8 A partial enlarged view. The pressure plate 1 is constructed with multiple circumferentially distributed lugs for connection with the gearbox housing, and mounting holes are formed in the lugs. The pressure plate 1 has a through hole for loosely fitting around the end section 21 of the outer ring 2 of the rolling bearing.

[0060] In this embodiment, the outer ring 2 and the pressure plate 1 can be connected in a rotatable manner by four axial locking mechanisms evenly distributed in the circumferential direction. The axial locking mechanism here includes: a slider 3, a locking member 4, a groove 23 constructed on the outer ring 2, and a slider receiving portion 13 and a locking member receiving portion 14 constructed on the pressure plate 1.

[0061] Figure 6 It is based on Figure 1 A perspective view of the sliding member 3 of the bearing unit in the illustrated embodiment. (See figure) Figure 6 As shown, the slider 3 is constructed as a pin, which has a cylindrical intermediate section and spherical ends on both sides of the intermediate section, namely the sliding end 31 and the locking contact end 32. In an alternative embodiment, the slider 3 is constructed as a sphere.

[0062] Figure 7 It is based on Figure 1 A perspective view of the locking member 4 of the bearing unit in the illustrated embodiment. (See figure) Figure 7 As shown, the locking member 4 is generally cylindrical and pin-shaped, and includes a top end 41 and a bottom end 42. The top end 41 of the locking member 4 is spherical. The bottom end 42 of the locking member 4 is planar.

[0063] The groove 23 of the outer ring 2 is especially like Figure 3 and Figure 5As shown. The groove 23 is constructed on the outer peripheral surface of the end section 21 of the outer ring 2. In this embodiment, the groove 23 is constructed as an annular groove and has an arc-shaped groove shape.

[0064] The sliding member receiving portion 13 and the locking member receiving portion 14 at the pressure plate 1 are particularly as follows: Figure 3 , Figures 8 to 10 As shown. The pressure plate 1 includes a first axial end face 11 facing away from the adjacent section 22 of the outer ring 2 and a second axial end face 12 facing the adjacent section 22 of the outer ring 2. The sliding member receiving portion 13 is configured as a radially extending cuboid groove, which is open towards the first axial end face 11 and radially inward. The locking member receiving portion 14 is configured as an axially extending circular through hole, which presses against the openings of the first axial end face 11 and the second axial end face 12 of the pressure plate 1. The locking member receiving portion 14 and the sliding member receiving portion 13 communicate with each other on the radially outer side of the sliding member receiving portion 13, so that the sliding member receiving portion 13 and the locking member receiving portion 14 can form an integrally L-shaped receiving space.

[0065] Especially Figure 3 As shown, when the bearing unit is assembled, the through hole of the pressure plate 1 loosely fits around the end section 21 of the outer ring 2 of the rolling bearing, allowing the sliding end 31 of the slider 3 to be slidably accommodated in the groove 23 of the outer ring 2, and the locking contact portion 32 of the slider 3 is accommodated in the slider receiving portion 13 of the pressure plate 1. Axially, the slider 3 is defined on the first axial end face 11 side by the groove wall 23 of the outer ring 2, and on the second axial end face 12 side by both the groove wall 23 of the outer ring 2 and the slider receiving portion 13 of the pressure plate 1. Radially, the slider 3 is defined radially inward by the groove bottom 23 of the outer ring 2, and radially outward by the locking member 4. The locking member 4 is here fixed in the locking member receiving portion 14 by a tight fit. Here, the locking element 4 is arranged in such a way that the sliding element 3 can be prevented from falling off the bearing unit by means of the radial limitation of the locking element 4, while the sliding element 3 can maintain the rotational ability relative to the groove 23 of the outer ring 2.

[0066] Here, the pressure plate 1 achieves axial stop on the second axial end face 12 by the shoulder of the adjacent section 22 of the outer ring 2, and the pressure plate 1 achieves axial stop on the first axial end face 11 by means of the groove 23 limiting the sliding member 3. In addition, since the through hole of the pressure plate 1 surrounds the end section of the outer ring 2 in a loose fit and the sliding member 3 maintains the ability to rotate relative to the groove 3, the pressure plate 2 can also rotate freely relative to the outer ring 2 by means of the sliding of the sliding member 3 in the groove 23 extending in the circumferential direction.

[0067] Figures 11 to 15 The following are shown for assembly according to Figure 1 The steps of the method for the bearing unit in the illustrated embodiment are shown.

[0068] First, an outer ring 2, a pressure plate 1, a sliding member 3, and a locking member 4 are provided for the bearing unit according to the above embodiment.

[0069] Then, the pressure plate 1 and / or the outer ring 2 are moved such that the pressure plate 1 loosely fits around the end section 21 of the outer ring 2 through its through hole, and the sliding member receiving portion 13 of the pressure plate 1 and the sliding groove 23 of the end section 21 of the outer ring 2 are axially aligned with each other. In particular, as Figure 11 As shown, in this step, for example, the assembled rolling bearing can be placed horizontally so that the end section 21 of the outer ring 2 faces upward, and then the pressure plate 1 is pushed from top to bottom into the end section 21 of the outer ring 2 so that the second axial end face 12 of the pressure plate 1 abuts against the stepped surface of the outer ring 2 formed by adjacent sections 22.

[0070] Next, as Figure 13 As shown, four sliding members 3 are respectively placed into the receiving space formed by the connected sliding member receiving portion 13 and locking member receiving portion 14. Here, in particular, since the sliding end 31 and the locking contact end 32 of the sliding member 3 are constructed identically, it is only necessary to ensure that the central axis of the sliding member 3 is aligned radially along the bearing unit during the placement of the sliding member 3, thus simplifying the assembly and improving the assembly efficiency.

[0071] Then, optionally, such as Figure 14 As shown, the slider 3 can be finely adjusted so that it moves toward the radial inner side of the bearing unit, thus bringing it closer to the groove 23 of the outer ring 2.

[0072] Subsequently, as Figure 15 As shown, the locking member 4 is inserted into the locking member receiving portion 14, causing the sliding member 3 to partially move into the groove 23 under the push of the locking member 4. In this step, through the spherical tapering structure of the locking member contact end 32 of the sliding member 3 and the top end 41 of the locking member 4, the locking member 4 can be easily inserted into the radially outer space of the sliding member 3 when it is first inserted into the locking member receiving portion 14, and during the process of penetrating into the locking member receiving portion 14, it forces the sliding member 3 to move in a direction perpendicular to the moving direction of the locking member 4 by its own axial movement, so that the sliding member 3 can finally partially enter the groove 23 at the outer ring 2.

[0073] The solution according to the present invention avoids the hard contact in the existing bearing unit press-fit process, preventing phenomena such as uneven press-fitting at the chuck connection points and ensuring bearing cleanliness. Furthermore, the opening of the pressure plate is easier to machine than the chuck, resulting in lower costs. The bearing unit installation process according to the present invention is simple. Using the method for assembling bearing units proposed herein, a heating step is unnecessary as in some existing solutions, thus making assembly efficient and rapid.

[0074] While possible embodiments have been described exemplarily in the foregoing description, it should be understood that numerous variations of embodiments exist through combinations of all known and readily conceived technical features and implementation methods. Furthermore, it should be understood that the exemplary embodiments are merely examples and do not in any way limit the scope, application, or construction of the invention. The foregoing description is more intended to provide those skilled in the art with technical guidance for transforming at least one exemplary embodiment, wherein various changes can be made, particularly regarding the function and structure of the components, without departing from the scope of the claims.

[0075] List of reference numerals

[0076] 1. Pressure plate

[0077] 11 First Axial End Face

[0078] 12 Second Axial End Face

[0079] 13 Sliding component receiving part

[0080] 14 Locking component receiving part

[0081] 2 Outer ring

[0082] 21 End Section

[0083] 22 Adjacent sections

[0084] 23 Slide

[0085] 3 Sliding parts

[0086] 31 Sliding end

[0087] 32 Locking contact end

[0088] 4 Locking components

[0089] 41. Top part

[0090] 42 Bottom end

[0091] 5 Inner Circle

[0092] 6. Seals

[0093] 7 Other components

Claims

1. A bearing unit, characterized in that, The bearing unit includes: A rolling bearing having an outer ring (2), wherein, The outer ring (2) has an end section (21) located at the axial end and an adjacent section (22) axially adjacent to the end section, wherein the outer diameter of the adjacent section (22) is at least partially larger than the outer diameter of the end section (21), wherein a groove (23) extending in the circumferential direction is formed on the outer peripheral surface of the end section (21). A pressure plate (1) having a through hole and loosely fitting around the end section (21) through the through hole, wherein the pressure plate (1) is constructed as follows: The sliding member receiving portion (13) is open toward the axial end side (12) opposite to the adjacent section (22) and also opens toward the radially inward side. The locking member receiving portion (14) is open toward the axial end side (12) away from the adjacent section (22) and communicates with the sliding member receiving portion (13) radially outward; Slider (3), which is arranged in the slider receiving portion (13); and The locking element (4) is fixed in the locking element receiving part (14) by a tight fit. The sliding member (3) is partially accommodated in the groove (23) by means of the locking member (4), thereby fixing the pressure plate (1) at the outer ring (2) in a way that allows relative rotation.

2. The bearing unit according to claim 1, wherein, The sliding end (31) of the slider (3) is smoothly constructed.

3. The bearing unit according to claim 2, wherein, The groove (23) is shaped to match the sliding end (31) of the slider.

4. The bearing unit according to claim 3, wherein, The sliding end (31) of the slider (3) is spherical, and the groove (23) is arc-shaped.

5. The bearing unit according to claim 1, wherein, The groove (23) is constructed as an annular groove.

6. The bearing unit according to claim 1, wherein, The locking contact end (32) of the slider (3) and / or the top end (41) of the locking member (4) are tapered toward the corresponding free end.

7. The bearing unit according to claim 6, wherein, The locking contact end (32) of the slider (3) and / or the top end (41) of the locking member (4) are spherical.

8. The bearing unit according to any one of claims 1 to 7, wherein, The slider (3) is constructed as a sphere, or the slider (3) is constructed as a pin, the pin having a cylindrical middle section and spherical ends on both axial sides of the middle section.

9. The bearing unit according to claim 1, wherein, The sliding member receiving portion (13) extends radially and / or the locking member receiving portion (14) extends axially.

10. A method for assembling bearing units, characterized in that, The method includes the following steps: a) Provide an outer ring (2), a pressure plate (1), a sliding member (3), and a locking member (4) for the bearing unit according to any one of claims 1 to 9; b) Move the pressure plate (1) and / or the outer ring (2) such that the pressure plate (1) surrounds the end section (21) of the outer ring (2) in a loose fit through its through hole, and such that the sliding member receiving part (13) of the pressure plate (1) and the sliding groove (23) of the end section (21) are aligned with each other; c) Place the slider (3) into the receiving space formed by the connected slider receiving part (13) and locking part receiving part (14); d) Insert the locking member (4) into the locking member receiving part (14) so ​​that the sliding member (3) is partially moved into the groove (23) by the pushing of the locking member (4).

Images