A fixing structure of a bearing

Abstract

The application provides a bearing fixing structure, which comprises a press-fitting body, a bearing chamber corresponding to the bearing is arranged on the press-fitting body, and a locking track is arranged on the inner side of the bearing chamber; and a retaining ring is arranged in the locking track on the side of the bearing outer ring, and a lug corresponding to the locking track is arranged on the outer wall of the retaining ring; wherein the retaining ring is locked by rotating along the circumferential direction of the locking track, so that the inner diameter size of the retaining ring is switched back and forth from being greater than the outer diameter size of the bearing outer ring to being smaller than the outer diameter size of the bearing outer ring. The bearing is installed after the retaining ring and the cover plate assembly are installed, so that the limitation of the axial space is avoided, the automatic assembly is facilitated, the bearing can pass through the transition fit or the clearance fit in the radial direction, the bearing play is optimized, the bearing can be installed in place only by using small or no press-fitting force, the bearing is convenient to disassemble and assemble, the bearing pulled out from the bearing chamber can be reused, and the service life and the product robustness of the bearing are improved.

Description

Technical Field

[0001] This invention relates to the field of bearing installation technology, and in particular to a bearing fixing structure. Background Technology

[0002] There are three main traditional methods for fixing the outer ring of a bearing: such as Figure 10 The diagram shows a standard bore-mounted bearing fixing method, where a1 is the retaining ring groove, a2 is the bearing shoulder, a3 is the bearing outer ring, and a4 is the bearing bore retaining ring. The bearing bore retaining ring is axially inserted into the retaining ring groove within the bearing housing. Through elastic deformation, the inner diameter of the retaining ring decreases, making it smaller than the diameter of the bearing outer ring, thus restricting the axial movement of the bearing outer ring. Figure 11 The diagram illustrates a bearing fixing method using a pressure plate. In this method, b1 is the bearing pressure plate mounting surface, b2 is the bearing pressure plate itself, b3 is the fixing bolt, b4 is the bolt hole, b5 is the bearing, and b6 is the bolt through hole. First, the bearing is pressed into the bearing housing. Then, a pressure plate is used to press down on the bearing outer ring. At this point, the inner diameter of the pressure plate is smaller than the diameter of the bearing outer ring. Finally, the cover plate fixing bolts are tightened to fix the pressure plate to the end face of the bearing housing, thus restricting the axial movement of the bearing outer ring. Figure 12 The diagram shows an interference fit method for fixing a bearing, where c1 is the bearing shoulder, c2 is the bearing outer ring, and c3 is the outer diameter of the bearing housing. This means reducing the diameter of the bearing housing and increasing the diameter of the bearing outer ring, so that the bearing outer ring and the bearing housing are interference-fitted. The large interference force restricts the axial movement of the bearing outer ring within the bearing housing.

[0003] However, the above-mentioned bearing outer ring fixing process has the following disadvantages:

[0004] 1. The disadvantages of fixing bearings with ordinary hole retaining rings are: special tools such as retaining ring pliers are required to insert the hole retaining ring into the retaining ring groove of the bearing housing, and a large axial space is required for operation. When the axial space is limited, it is difficult to ensure the manual assembly of the retaining ring, and automated assembly is also difficult to achieve.

[0005] 2. The disadvantages of the bearing fixing method with pressure plate are: the bearing needs to be installed first, then the pressure plate needs to be installed, and then the pressure plate needs to be fixed with bolts. The axial installation space requirement is large, and it is difficult to automate the assembly. Moreover, when disassembling the bearing, the cover plate needs to be removed first before the bearing can be disassembled, which also requires a large axial space.

[0006] 3. The disadvantages of the interference fit method for fixing bearings are: when the outer ring of the bearing is pressed into the bearing housing with a large interference fit, a large pressing force is required, which requires a high level of pressing process. When the bearing needs to be removed from the bearing housing, it will cause damage to the bearing, making it unusable and reducing the robustness of the product. Summary of the Invention

[0007] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a bearing fixing structure to solve the problems in the prior art where the axial installation space is limited, making it difficult to automate the assembly of bearings, and the bearings are damaged when removed from the bearing housing, making them unusable and reducing product robustness.

[0008] To achieve the above and other related objectives, the present invention provides a bearing fixing structure, comprising: a press-fit body, wherein the press-fit body is provided with a bearing chamber corresponding to the bearing, and a locking track is provided on the inner side of the bearing chamber; and a retaining ring, wherein the retaining ring is disposed in the locking track located on one side of the outer ring of the bearing, and the outer wall of the retaining ring is provided with a lug corresponding to the locking track; wherein the retaining ring is rotated and locked in the circumferential direction along the locking track, so that the inner diameter of the retaining ring switches back and forth from being larger than the outer diameter of the outer ring of the bearing to being smaller than the outer diameter of the outer ring of the bearing.

[0009] In one embodiment of the present invention, the press-fit body includes: a bearing housing, one side of the inner ring of the bearing housing corresponding to the bearing chamber; and a cover plate assembly, the cover plate assembly being installed on one side of the bearing housing, the cover plate assembly corresponding to the outer surface of the retaining ring.

[0010] In one embodiment of the present invention, the locking track includes: a plurality of first ear slots arranged circumferentially along the inner side of the bearing chamber and a number of second ear slots corresponding to the first ear slots; wherein, when the lug is located in the first ear slot, the inner diameter of the retaining ring is larger than the outer diameter of the bearing outer ring, and when the lug rotates to the second ear slot, the inner diameter of the retaining ring is between the outer diameter of the bearing outer ring and the inner diameter of the bearing outer ring.

[0011] In one embodiment of the present invention, the bearing chamber includes: a first mounting chamber for mounting a bearing; and a second mounting chamber for mounting a retaining ring, wherein a first ear groove and a second ear groove are respectively disposed on the inner wall of the second mounting chamber.

[0012] In one embodiment of the present invention, the first ear slot and the second ear slot are smoothly connected on the inner wall of the second mounting chamber by a large chamfer.

[0013] In one embodiment of the present invention, the second ear groove is a corresponding groove structure on the second mounting chamber after the first ear groove is translated radially toward the axis of the first mounting chamber.

[0014] In one embodiment of the present invention, the retaining ring includes: a retaining ring, which is an elastic member with a "C" shaped structure, and lugs are correspondingly arranged on the retaining ring; and a wrench, which is installed at both ends of the retaining ring and extends outward from the bearing seat.

[0015] In one embodiment of the present invention, an adjustment groove is provided between the second mounting chamber and the outer wall of the bearing housing, and a wrench extends out of the outer side of the bearing housing through the adjustment groove.

[0016] In one embodiment of the present invention, the arc length of the adjustment groove is greater than the arc length between the wrenches within the adjustment groove.

[0017] In one embodiment of the present invention, the cover plate assembly includes: a cover plate with a central cutout; and a plurality of bolts threaded through the cover plate and mounted on a bearing seat.

[0018] In one embodiment of the present invention, the cover plate corresponding to the bolt is C-shaped on one side.

[0019] In one embodiment of the present invention, the inner diameter of the cover plate is larger than the outer diameter of the bearing outer ring, and the outer diameter of the retaining ring is always larger than the inner diameter of the cover plate.

[0020] As described above, the bearing fixing structure of the present invention has the following beneficial effects: By engaging the lugs on the retaining ring with the first and second lugs respectively, when the lugs are located in the first lug of the bearing housing, the cover plate assembly can be installed on the bearing seat on one side of the retaining ring first. This allows the bearing to be directly installed in the bearing housing through the cover plate assembly and the retaining ring. After installation, the lugs rotate to reach the second lug, locking the outer ring of the installed bearing. This eliminates axial space limitations, facilitates automated assembly, and requires only minimal or no pressure to install the bearing. By rotating the retaining ring in the opposite direction, the lugs move from the second lug to the first lug, increasing the inner diameter of the retaining ring to be larger than the outer diameter of the bearing outer ring. This facilitates the removal and installation of the bearing from the bearing housing, allowing the bearing to be removed without disassembling the cover plate assembly. The bearing pulled from the bearing housing can be reused, improving bearing life and product robustness. Attached Figure Description

[0021] Figure 1 The diagram shown is an exploded view of the fixed structure of the present invention.

[0022] Figure 2 The image shown is a front view of the bearing housing of the present invention.

[0023] Figure 3 This is a schematic diagram of the retaining ring of the present invention.

[0024] Figure 4 The diagram shown illustrates an embodiment of the present invention in which the retaining ring is installed in the bearing housing.

[0025] Figure 5 The diagram shows two embodiments of the present invention in which the retaining ring is installed in the bearing housing.

[0026] Figure 6 The diagram shows the state of the retaining ring of the present invention in a relaxed state.

[0027] Figure 7 This invention is shown as Figure 6 Sectional view along the middle AA.

[0028] Figure 8 The diagram shows the state of the retaining ring of the present invention in a compressed state.

[0029] Figure 9 This invention is shown as Figure 8 Sectional view along the middle AA.

[0030] Figure 10 The diagram shows a conventional method of fixing bearings with retaining rings in ordinary holes.

[0031] Figure 11 This diagram illustrates the installation method of a pressure plate fixed bearing in the prior art.

[0032] Figure 12 The diagram shows a conventional method of fixing bearings using interference fit.

[0033] Component designation explanation

[0034] Bearing housing 1; retaining ring 2; bearing 10; press-fit body 20; locking rail 30; cover plate assembly 3; bearing chamber 11; first ear groove 111; second ear groove 112; first mounting chamber 113; second mounting chamber 114; adjusting groove 115; lug 21; retaining ring 22; wrench 23; cover plate 31; bolt 32. Detailed Implementation

[0035] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other. It should also be understood that the terminology used in the embodiments of the present invention is for describing specific implementation schemes and not for limiting the scope of protection of the present invention. Test methods in the following embodiments that do not specify specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers.

[0036] Please see Figures 1 to 9It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness or purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0037] Please see Figure 1-3 The present invention provides a bearing fixing structure, comprising: a press-fit body 20, wherein the press-fit body 20 is provided with a bearing chamber 11 corresponding to the bearing 10, and a locking track 30 is provided on the inner side of the bearing chamber 11; and a retaining ring 2, wherein the retaining ring 2 is disposed in the locking track 30 located on one side of the outer ring of the bearing 10, and the outer wall of the retaining ring 2 is provided with a lug 21 corresponding to the locking track 30; wherein the retaining ring 2 is rotated and locked in the circumferential direction along the locking track 30, so that the inner diameter of the retaining ring 2 can switch back and forth from being larger than the outer diameter of the outer ring of the bearing 10 to being smaller than the outer diameter of the outer ring of the bearing 10.

[0038] In one embodiment of the present invention, during the installation of the bearing 10 onto the press-fit body 20, a retaining ring 2 is installed within a locking track 30 on one side of the bearing chamber 11. This allows the lug 21 to switch its locking position within the locking track 30 when the retaining ring 2 is rotated within it. This enables the bearing 10 to be inserted into the bearing chamber 11 from outside the press-fit body 20, passing through the inner ring of the retaining ring 2, even when the inner diameter of the retaining ring 2 is larger than the outer ring of the bearing 10. Furthermore, after the bearing 10 is installed in the bearing chamber 11, the retaining ring 2 is rotated again to switch its locking position within the locking track 30, ensuring that the inner diameter of the retaining ring 2 is smaller than the outer diameter of the bearing 10. This effectively limits the outer ring of the bearing 10, locking it within the bearing chamber 11. This solves the technical problem of the bearing 10 being difficult to quickly fix, release, and disassemble.

[0039] like Figure 1-3 As shown, the press-fit body 20 includes: a bearing housing 1, one side of the inner ring of the bearing housing 1 corresponding to the bearing chamber 11; and a cover plate assembly 3, which is installed on one side of the bearing housing 1 and corresponds to the outer surface of the retaining ring 2.

[0040] The locking track 30 includes: a plurality of first ear grooves 111 arranged circumferentially along the inner side of the bearing chamber 11 and a number of second ear grooves 112 corresponding to the first ear grooves 111; wherein, when the lug 21 is located in the first ear groove 111, the inner diameter of the retaining ring 2 is larger than the outer diameter of the outer ring of the bearing 10, and when the lug 21 rotates to the second ear groove 112, the inner diameter of the retaining ring 2 is between the outer diameter of the outer ring of the bearing 10 and the inner diameter of the outer ring of the bearing 10.

[0041] In one embodiment of the present invention, the bearing 10 is first inserted into the bearing chamber 11 on the bearing housing 1. After the bearing 10 is installed in place, the retaining ring 2 is placed into the corresponding bearing chamber 11 on one side of the bearing 10, and the lug 21 on the retaining ring 2 is first positioned in the first lug groove 111. Then, the retaining ring 2 is rotated so that the lug 21 rotates away from the first lug groove 111 and enters the second lug groove 112. When the lug 21 is located in the second lug groove 112, the inner diameter of the retaining ring 2 becomes smaller, thereby locking and limiting the side surface of the outer ring of the bearing 10. Furthermore, after the retaining ring 2 is installed, it is then installed on the bearing housing 1 by the cover plate assembly 3 to achieve a second limiting installation of the retaining ring 2.

[0042] During bearing installation, the retaining ring 2 can be installed into the bearing housing 11 first, while the cover plate assembly 3 is pre-installed on the retaining ring 2 to limit its position. In the initial position, the lug 21 corresponds to the first ear groove 111. Then, the bearing 10 can be directly inserted into the bearing housing 11 by passing through the cover plate assembly 3 and the retaining ring 2 in sequence. By rotating the retaining ring 2, the lug 21 is rotated into the second ear groove 112. This reduces the inner diameter of the retaining ring 2, limiting the outer ring of the bearing. Bearing installation using this method overcomes the limitations of axial space, thus facilitating automated assembly. Furthermore, during the bearing disassembly process, by rotating the retaining ring 2 in the reverse direction, the lug 21 is moved from the second lug 112 to the first lug 111, and the inner diameter of the retaining ring 2 is increased to be larger than the outer diameter of the outer ring of the bearing 10. This facilitates the disassembly and assembly of the bearing 10 from the bearing chamber 11, thereby enabling the bearing 10 to be removed and pulled out of the bearing chamber 11 without removing the cover plate assembly 3. The bearing 10 can be reused, improving bearing life and product robustness.

[0043] like Figure 2 As shown, the bearing chamber 11 includes: a first mounting chamber 113, which is used to mount the bearing 10; and a second mounting chamber 114, which is used to mount the retaining ring 2. The first ear groove 111 and the second ear groove 112 are respectively provided on the inner wall of the second mounting chamber 114.

[0044] In one embodiment of the invention, when installing the bearing 10 and the retaining ring 2, the bearing chamber 11 uses a first mounting chamber 113 to install the bearing 10 and a second mounting chamber 114 to install the retaining ring 2.

[0045] Specifically, the fit between the first mounting chamber 113 of the bearing housing 11 and the bearing can be either a transition fit or a clearance fit.

[0046] Furthermore, the first ear groove 111 and the second ear groove 112 are smoothly connected on the inner wall of the second mounting chamber 114 by a large chamfer.

[0047] In one embodiment of the invention, the connection between the first ear groove 111 and the second ear groove 112 is not limited to using a small chamfer. The first ear groove 111 and the second ear groove 112 are smoothly connected on the inner wall of the second mounting chamber 114 using a large chamfer, so that the lug 21 can smoothly reach into the second ear groove 112 along the surface of the first ear groove 111 and the second mounting chamber 114.

[0048] Similarly, the two sides of the lug 21 are smoothly connected to the retaining ring 2 through a chamfer structure corresponding to the large chamfer. In use, forcefully pushing and turning the retaining ring 2 makes it easier for the lug 21 to move from the first ear groove 111 to the second ear groove 112 or from the second ear groove 112 to the first ear groove 111, making the switching process less strenuous. Moreover, the large chamfer design on one side increases the difficulty of removing the retaining ring 2 under force during operation.

[0049] Furthermore, the second ear groove 112 is a corresponding groove structure on the second mounting chamber 114 after the first ear groove 111 is translated radially toward the axis of the first mounting chamber 113.

[0050] In one embodiment of the present invention, the structure of the second ear groove 112 is arranged in a corresponding manner with the structure of the first ear groove 111 so that when the lug 21 rotates, it can adaptably reach into the second ear groove 112, thereby enabling the lug 21 to stably fit into the second ear groove 112.

[0051] like Figure 3-5 As shown, the retaining ring 2 includes: a retaining ring 22, which is an elastic member with a "C" shaped structure, and lugs 21 are correspondingly arranged on the retaining ring 22; and a wrench 23, which is installed at both ends of the retaining ring 22 and extends out of the outer side of the bearing seat 1.

[0052] In one embodiment of the present invention, the retaining ring 22 can be made of elastic steel. During the rotation of the retaining ring 2, by pushing the wrench 23, the lug 21 on the retaining ring 22 moves from the first lug 111 into the surface of the second mounting chamber 114 into the second lug 112, and when it reaches the second lug 112, the inner diameter of the retaining ring 22 decreases, thereby limiting the outer wall of the outer ring of the bearing 10.

[0053] like Figure 4 As shown, the arc length of the adjusting groove 115 is greater than the arc length between the wrenches 23 within the adjusting groove 115. This allows the wrench 23 to move from one side of the adjusting groove 115 around the center of the retaining ring 22 toward the other side of the adjusting groove 115 while rotating the wrench 23 to reduce the inner diameter of the retaining ring 22.

[0054] like Figure 4-5 As shown, an adjustment groove 115 is provided between the second mounting chamber 114 and the outer wall of the bearing housing 1, and a wrench 23 extends out of the outer side of the bearing housing 1 through the adjustment groove 115.

[0055] In one embodiment of the present invention, during the process of pushing the wrench 23, the wrench 23 will rotate in the adjustment groove 115, and at the same time the distance between the wrenches 23 decreases.

[0056] Please see Figure 4 In the given embodiment, before the bearing 10 is installed, the retaining ring 2 is first installed in the second mounting chamber 114. The lug 21 on the retaining ring 2 corresponds to the first lug groove 111, and the chamfered structure of the lug 21 is closely attached to the large chamfer between the first lug and the second lug, so as to increase the difficulty of removing the retaining ring 2 under force during operation. At this time, the retaining ring 2 is in a relaxed state. At the same time, the wrench 23 is located on the right side of the adjusting groove 115, and the distance between the wrenches 23 is relatively large, so as to ensure that the inner diameter of the retaining ring 22 is larger than the outer diameter of the bearing 10, so that after the cover plate 31 is installed, the bearing passes through the cover plate 31 and the retaining ring 22 and directly enters the first mounting chamber 113.

[0057] Please see Figure 5 In the given embodiment, after the bearing 10 is installed in the first mounting chamber 113, the wrench 23 is pushed to move the wrench 23 and the retaining ring 22 toward the left side of the adjusting groove 115. At the same time, the lug 21 also moves from the first lug 111 along the large chamfer of the inner wall of the second mounting chamber 114 into the second lug 112. When the lug 21 reaches the second lug 112, the inner diameter of the retaining ring 22 is reduced to be smaller than the outer diameter of the outer ring of the bearing 10, so as to limit the outer ring of the bearing 10 installed in the first mounting chamber 113.

[0058] like Figure 6 and 8As shown, the cover plate assembly 3 includes: a cover plate 31 with a central cutout; and several sets of bolts 32, which are threaded onto the bearing seat 1 through the cover plate 31.

[0059] In one embodiment of the present invention, after the retaining ring 2 is installed, a cover plate 31 is placed on the bearing seat 1 on one side of the retaining ring 2, and the retaining ring 2 is limited by bolts 32. It is worth noting that when the cover plate 31 is installed on the bearing seat 1, the retaining ring installed in the second mounting chamber 114 can also be limited by riveting, welding, or slotting.

[0060] Furthermore, one side of the cover plate 31 corresponding to the bolt 32 is C-shaped. The bolt 32 is inserted through the corresponding area of ​​the C-shaped cover plate 31, thereby saving material of the cover plate 31.

[0061] The inner diameter of the cover plate 31 is larger than the outer diameter of the outer ring of the bearing 10, and the outer diameter of the retaining ring 2 is always larger than the inner diameter of the cover plate 31.

[0062] Please see Figure 6 In the illustrated embodiment, when the retaining ring 2 is in a relaxed state, it is mounted on the bearing housing 1 via bolts 32 through the cover plate 31. At this time, the wrench 23 is located on the right side of the adjusting groove 115, and the distance between the wrenches 23 is relatively large. When the bearing 10 is installed into the first mounting chamber 113, the inner diameter of the retaining ring 22 is larger than the outer diameter of the outer ring of the bearing 10. The bearing 10 is in a relaxed state within the first mounting chamber 113 and can be freely removed from the first mounting chamber 113 by passing through the retaining ring 2 and the cover plate 31 in sequence. Similarly, the bearing 10 can also be installed into the bearing chamber 11 when the retaining ring 2 is in a relaxed state.

[0063] Please see Figure 7 In the illustrated embodiment, when the retaining ring 2 is in a relaxed state, one side of the outer ring of the bearing 10 is confined to the corresponding side of the bearing shoulder inside the first mounting chamber 113. On the other side, because the retaining ring 2 is in a relaxed state, the inner diameter of the retaining ring 22 is larger than the outer diameter of the outer ring of the bearing 10, thus allowing the bearing 10 to be removed from the first mounting chamber 113.

[0064] Please see Figure 8 In the illustrated embodiment, when the retaining ring 2 is in a clamping state against one side of the outer ring of the bearing 10, it is mounted on the bearing housing 1 by bolts 32 via the cover plate 31. At this time, the wrench 23 is located to the left of the adjusting groove 115, and the distance between the wrenches 23 is relatively small. When the bearing 10 is installed into the first mounting chamber 113, the inner diameter of the retaining ring 22 is smaller than the outer diameter of the outer ring of the bearing 10. The bearing 10 is in a clamping state within the first mounting chamber 113, and the reduced-diameter retaining ring 22 confines the bearing 10 within the first mounting chamber 113.

[0065] Please see Figure 9 In the illustrated embodiment, the bearing 10 is installed in the first mounting chamber 113. At this time, one side of the outer ring of the bearing 10 is restricted by the corresponding side of the bearing shoulder inside the first mounting chamber 113. The other side of the outer ring of the bearing 10 is restricted by the retaining ring 22 when the retaining ring 2 is pressed, so the bearing 10 cannot be removed from the first mounting chamber 113.

[0066] The assembly process of the bearing fixing structure of the present invention includes the following steps:

[0067] Step 1: Place the retaining ring 2 into the second mounting chamber 114 of the bearing housing 11. At this time, the lug 21 is located in the first lug groove 111 and the retaining ring 2 is in a relaxed state.

[0068] Step 2: Fit the cover plate 31 to the end face of the bearing housing 1 on one side of the bearing chamber 11, and align the through hole on the cover plate 31 with the bolt hole on the end face of the bearing housing 1.

[0069] Step 3: Pass the bolt 32 through the through hole and screw it into the bolt hole to tighten the bolt 32, so as to fix the cover plate 31 on the bearing seat 1 and limit the retaining ring in the second mounting chamber 114.

[0070] Step 4: Press the bearing 10 into the bearing chamber 11 of the gearbox bearing housing 1. The outer ring of the bearing 10 abuts against the bearing shoulder on the inner side of the bearing chamber 11. The current retaining ring 2 is in a loose state. At this time, the bearing 2 and the bearing chamber 11 are in a transition fit. The clearance of the bearing 10 in this fit state is in an ideal state, which is beneficial to improving the bearing life.

[0071] Step 5: Use circumferential force to rotate the wrench 23 on one side of the retaining ring 22. The wrench 23 moves to one side of the adjusting groove 115, causing the retaining ring 22 to be compressed. The lug 21 slides from the first lug groove 111 into the second lug groove 112. At this time, the retaining ring 22 is in a compressed state, the inner diameter is reduced, and it blocks the outer ring of the bearing 10, thereby restricting the axial movement of the bearing 10.

[0072] Step Six: Bearing Disassembly. Use circumferential force to push and turn the wrench 23 on one side of the retaining ring 22 in the opposite direction to Step Five. The wrench 23 moves to the other side of the adjusting groove 115, causing the retaining ring 2 to rotate under force. The lug slides from the second lug 112 into the first lug 111. At this time, the retaining ring 22 is in a relaxed state. The inner diameter of the retaining ring 22 returns to its initial size and is larger than the outer diameter of the bearing 10. The bearing 10 can be freely removed from the first mounting chamber 113, thereby realizing the disassembly of the bearing 10.

[0073] In summary, the present invention, through the cooperation between the lug 21 on the retaining ring 2 and the first ear groove 111 and the second ear groove 112 respectively, can realize that when the lug 21 is located in the first ear groove 111 of the bearing chamber 11, the cover plate assembly 3 is first installed on the bearing seat 1 on one side of the retaining ring 2, so that the bearing 10 can be directly installed in the bearing chamber 11 through the cover plate assembly 3 and the retaining ring 2. At the same time, after installation, the lug 21 is rotated to reach the second ear groove 112 to lock the outer ring of the installed bearing 10, thereby getting rid of the limitation of axial space, facilitating automated assembly, and requiring only a small or no pressure force to install the bearing 10 into place. By rotating the retaining ring 2 in the reverse direction, the lug 21 is moved from the second lug 112 to the first lug 111. The inner diameter of the retaining ring 2 is increased to be larger than the outer diameter of the bearing 10's outer ring, thus facilitating the removal and installation of the bearing 10 from the bearing housing 11. This allows the bearing to be removed without disassembling the cover plate assembly, and the bearing 10 pulled out of the bearing housing 11 can be reused, improving the bearing 10's lifespan and product robustness. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial applicability.

[0074] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A bearing fixing structure, characterized in that, include: A press-fitting body (20), wherein the press-fitting body (20) is provided with a bearing chamber (11) corresponding to the bearing (10), and a locking rail (30) is provided on the inner side of the bearing chamber (11); and A retaining ring (2) is provided in the locking track (30) located on one side of the outer ring of the bearing (10), and the outer wall of the retaining ring (2) is provided with a lug (21) corresponding to the locking track (30); The retaining ring (2) is rotated and locked in the circumferential direction along the locking track (30) so that the inner diameter of the retaining ring (2) can switch back and forth from being larger than the outer diameter of the bearing (10) to being smaller than the outer diameter of the bearing (10).

2. The bearing fixing structure according to claim 1, characterized in that: The press-fit body (20) includes: Bearing housing (1), the inner ring side of the bearing housing (1) corresponding to the bearing chamber (11); and Cover plate assembly (3) is mounted on one side of the bearing seat (1) and corresponds to the outer surface of the retaining ring (2).

3. The bearing fixing structure according to claim 1 or 2, characterized in that: The locking track (30) includes: a plurality of first ear slots (111) arranged circumferentially along the inner side of the bearing chamber (11) and a number of second ear slots (112) corresponding to the first ear slots (111); When the lug (21) is located in the first ear groove (111), the inner diameter of the retaining ring (2) is greater than the outer diameter of the outer ring of the bearing (10). When the lug (21) rotates to the second ear groove (112), the inner diameter of the retaining ring (2) is between the outer diameter of the outer ring of the bearing (10) and the inner diameter of the outer ring of the bearing (10).

4. The bearing fixing structure according to claim 3, characterized in that: The bearing housing (11) includes: A first mounting chamber (113) is provided, wherein the bearing (10) is correspondingly mounted; and The second mounting chamber (114) is where the retaining ring (2) is installed. The first ear groove (111) and the second ear groove (112) are respectively provided on the inner wall of the second mounting chamber (114).

5. The bearing fixing structure according to claim 4, characterized in that: The first ear slot (111) and the second ear slot (112) are smoothly connected on the inner wall of the second mounting chamber (114) by a large chamfer.

6. The bearing fixing structure according to claim 4, characterized in that: The second ear groove (112) is the corresponding groove structure on the second mounting chamber (114) after the first ear groove (111) is translated along the radial direction of the first mounting chamber (113) toward the axis.

7. The bearing fixing structure according to claim 4, characterized in that: The retaining ring (2) includes: A retaining ring (22), wherein the retaining ring (22) is a C-shaped elastic member, and the lug (21) is correspondingly arranged on the retaining ring (22); and A wrench (23) is installed at both ends of the retaining ring (22) and extends out of the outside of the bearing seat (1).

8. The bearing fixing structure according to claim 7, characterized in that: An adjustment groove (115) is provided between the second installation chamber (114) and the outer wall of the bearing seat (1), and the wrench (23) extends out of the outer side of the bearing seat (1) through the adjustment groove (115).

9. The bearing fixing structure according to claim 8, characterized in that: The arc length of the adjustment groove (115) is greater than the arc length between the wrenches (23) within the adjustment groove (115).

10. The bearing fixing structure according to claim 2, characterized in that: The cover plate assembly (3) includes: Cover plate (31), the center of which is hollowed out; and Several sets of bolts (32) are threaded onto the bearing housing (1) through the cover plate (31).

11. The bearing fixing structure according to claim 10, characterized in that: The cover plate (31) corresponding to the bolt (32) has a "C" shape on one side.

12. The bearing fixing structure according to claim 10, characterized in that: The inner diameter of the cover plate (31) is larger than the outer diameter of the bearing (10), and the outer diameter of the retaining ring (2) is always larger than the inner diameter of the cover plate (31).

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