Retainer convenient to assemble

Abstract

The utility model discloses a retainer convenient to assemble, which comprises a first annular frame body, a second annular frame body and a plurality of window beams, the first annular frame body and the second annular frame body are oppositely arranged, the window beams are connected with the first annular frame body and the second annular frame body, and window holes for mounting rolling bodies are formed between the adjacent window beams. The first annular frame body, the second annular frame body and the window beam are integrally formed, and the basic structural strength of the whole retainer is guaranteed. A trapezoidal slot is formed in the inner side of each window beam; and slot holes matched with the trapezoidal slots are formed in the first annular frame body. The retainer further comprises an auxiliary support and a plugging ring, the auxiliary support block comprises a gasket and a trapezoidal insertion block fixedly arranged on the outer side of the gasket, the trapezoidal insertion block is inserted into the trapezoidal insertion groove and the insertion groove hole, the outer wall of the gasket is attached to the inner wall of the window beam, so that the radial limiting capacity of the bearing retainer to the rolling body is enhanced, and the auxiliary support block plays a role in protecting the window beam. The plugging ring is detachably fixed to the top of the first annular frame body and can prevent the trapezoidal insertion blocks from being separated from the trapezoidal insertion grooves.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearing retainers, and in particular relates to a retainer that is easy to assemble. Background Art

[0002] As an indispensable component in mechanical operation, the performance and reliability of bearings are directly related to the stability and life of the entire mechanical system. As an important component of bearings, the bearing cage is used to maintain the relative position of the bearing rolling elements, prevent direct contact between the rolling elements, reduce friction, and extend the service life of the bearings. Existing cages are usually composed of two annular frames and a window beam connecting the two annular frames. In order to ensure the structural strength of the cage, the annular frames and the window beam are prepared by one-piece molding. The sheet metal is prepared into an integrated cage through processes such as bending and punching. This makes the thickness of the window beam consistent with the thickness of the annular frame. As a result, the following problems are prone to occur:

[0003] 1. The window beam is not thick enough and has low structural strength, which makes it easy to be damaged during use. In addition, the radial limiting capacity of the rolling element is poor, making it difficult to meet the requirements of bearing stability during high-intensity operation.

[0004] 2. The inner side of the window beam is relatively easy to be damaged. When the window beam is damaged, the entire retaining frame needs to be replaced, which increases the difficulty and cost of maintenance. Utility Model Content

[0005] In response to the problems and shortcomings of the above-mentioned prior art, the present invention provides a retaining frame that is easy to assemble. By adopting an integrated first annular frame, a window beam, and a second annular frame, the basic structural strength of the retaining frame is ensured. By assembling an auxiliary support block on the inner side of the window beam, the radial limiting ability of the retaining frame on the rolling element is improved, thereby increasing the stability of the bearing operation. The auxiliary support block is installed on the inner side of the window beam in a plug-in manner, which is convenient and easy to assemble the retaining frame. A blocking ring is provided on the top of the first annular frame to prevent the auxiliary support block from detaching from the window beam.

[0006] The utility model is realized through the following technical solutions:

[0007] A retaining frame that is easy to assemble includes a first annular frame and a second annular frame that are arranged opposite to each other, and a plurality of window beams connecting the first annular frame and the second annular frame, with window holes for mounting rolling elements formed between adjacent window beams. The first annular frame, the second annular frame and the window beam are integrally formed to ensure the basic structural strength of the entire retaining frame. A trapezoidal slot is provided on the inner side of each window beam, and a slot hole that cooperates with the trapezoidal slot is provided on the first annular frame. The retaining frame also includes auxiliary supports and sealing rings. The auxiliary support block includes a gasket and a trapezoidal plug-in block fixed to the outside of the gasket. The trapezoidal plug-in block is plugged into the trapezoidal slot and the slot hole. The outer wall of the gasket fits into the inner wall of the window beam to enhance the radial limiting ability of the bearing retainer on the rolling element. The auxiliary support block protects the window beam. The sealing ring is detachably fixed to the top of the first annular frame and can prevent the trapezoidal plug-in block from escaping from the trapezoidal slot.

[0008] Furthermore, the sum of the length of the trapezoidal slot and the length of the slot hole is equal to the length of the trapezoidal plug, and the top of the trapezoidal plug abuts against the blocking ring, effectively preventing the trapezoidal plug from sliding relative to the window beam in its extension direction.

[0009] Furthermore, a threaded hole is provided on the first annular frame, and a countersunk hole aligned with the threaded hole is provided on the sealing ring. The countersunk bolt passes through the countersunk hole and is screwed into the threaded hole, which facilitates the disassembly and assembly of the sealing ring, and further facilitates the disassembly and installation of each auxiliary support block.

[0010] Furthermore, the number of threaded holes and countersunk holes is consistent and at least 2, thereby ensuring the stability of the connection between the sealing ring and the first annular frame.

[0011] Furthermore, an annular groove is provided on the side of the first annular frame away from the window beam, and the annular groove is located on the inner side of the first annular frame. The thickness of the blocking ring is consistent with the thickness of the annular frame, and the bottom of the blocking ring protrudes with an annular protrusion that cooperates with the annular groove. When the blocking ring is installed on the top of the first annular frame, the annular protrusion is located in the annular groove. The annular protrusion cooperates with the annular groove, effectively increasing the contact area between the blocking ring and the first annular frame, and improving the connection stability of the blocking ring and the first annular frame. At the same time, when the bearing is running at high speed, the annular protrusion of the blocking ring abuts against the inner wall of the first annular frame, which can overcome a certain centrifugal force and prevent relative deviation between the blocking ring and the first annular frame when the bearing is running. The annular protrusion cooperates with the annular groove and can also play a positioning role for the blocking ring, ensuring that the blocking ring can be accurately installed to the first annular frame.

[0012] Furthermore, a first transition chamfer is provided between both sides of the gasket and the trapezoidal insert to prevent excessive stress concentration between the gasket and the trapezoidal insert, thereby improving the structural stability of the auxiliary support block.

[0013] Furthermore, the length of the gasket is equal to the length of the window beam, and the side wall of the gasket abuts against the rolling body, so that the gasket fully protects the inner side of the window beam.

[0014] Furthermore, the shim thickness varies, allowing for selection of the appropriate thickness based on the actual bearing requirements and installation inside the cage, allowing the bearing to adapt to different application scenarios. The shim thickness should be no greater than the window beam thickness to ensure stability after installation.

[0015] Furthermore, the edges and corners of the gasket are provided with rounded corners to prevent the edges and corners of the gasket from scratching the human body when the gasket is installed.

[0016] Furthermore, the gasket and the trapezoidal insert are integrally formed, thereby improving the overall structural strength of the auxiliary support block.

[0017] Beneficial effects of the utility model:

[0018] 1. The basic structural strength of the retainer is ensured by adopting an integrated first annular frame, window beam and second annular frame;

[0019] 2. By assembling auxiliary support blocks on the inner side of the window beam, the radial limiting ability of the cage on the rolling element is improved, thereby increasing the stability of the bearing operation;

[0020] 3. The auxiliary support block is installed on the inner side of the window beam in the form of plug-in, which is convenient and fast and easy to assemble the retainer;

[0021] 4. A blocking ring is provided on the top of the first annular frame to prevent the auxiliary support block from separating from the window beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A connection diagram for illustrating an exemplary embodiment of a retainer that is easy to assemble in the present invention;

[0023] Figure 2 A side view illustrating a schematic embodiment of a retainer that is easy to assemble according to the present invention;

[0024] Figure 3 A schematic structural diagram for illustrating an exemplary embodiment of a retainer that is easy to assemble in the present invention;

[0025] Figure 4 To illustrate Figure 3 A partial enlarged schematic diagram in the middle;

[0026] Figure 5 A schematic structural diagram for illustrating a schematic embodiment of a cutaway state of a retainer that is easy to assemble according to the present invention;

[0027] Figure 6 To illustrate Figure 5 A partial enlarged schematic diagram of point B in the middle;

[0028] Figure 7 A schematic structural diagram for illustrating an exemplary embodiment of an auxiliary support block of a retainer that is easy to assemble in the present invention;

[0029] Figure 8 To illustrate Figure 7 A partial enlarged schematic diagram of point C in the middle;

[0030] Figure 9 To illustrate Figure 7 A partial enlarged schematic diagram of point D in the middle;

[0031] Figure 10 A schematic structural diagram is provided for illustrating an exemplary embodiment of a blocking ring of a retaining frame that is easy to assemble in the present invention.

[0032] List of parts and reference numerals:

[0033] 1. First annular frame; 11. Slot hole; 12. Annular groove; 13. Threaded hole; 2. Second annular frame; 3. Window beam; 31. Trapezoidal slot; 4. Window hole; 5. Auxiliary support block; 51. Gasket; 511. First transition chamfer; 52. Trapezoidal insert; 6. Sealing ring; 61. Annular protrusion; 62. Countersunk hole. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] It should be noted that the directional terms such as left, right, up, down, front and back in the embodiments of the present invention are merely relative concepts or are based on the normal use state of the product, that is, the direction of movement of the product, and should not be considered as limiting.

[0036] In addition, it should be noted that the dynamic terms such as "relative motion" mentioned in the embodiments of the present invention not only refer to changes in position, but also include movements such as rotation and rolling in which there is no relative change in position but the state is changed.

[0037] Finally, it should be noted that when a component is referred to as being "located on" or "disposed on" another component, it can be on the other component or there may be an intervening component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0038] like Figures 1 to 10 The present invention discloses a retainer that is easy to assemble, comprising a first annular frame 1 and a second annular frame 2 arranged opposite to each other, and a plurality of window beams 3 connecting the first annular frame 1 and the second annular frame 2, with window holes 4 for mounting rolling elements formed between adjacent window beams 3. The first annular frame 1, the second annular frame 2, and the window beams 3 are integrally formed to ensure the basic structural strength of the entire retainer. A trapezoidal slot 31 is formed on the inner side of each window beam 3, and a slot hole 11 is formed on the first annular frame 1 to cooperate with the trapezoidal slot 31. The retainer also includes an auxiliary support and blocking ring 6, an auxiliary support block 5 including a gasket 51 and a trapezoidal insert 52 fixed to the outside of the gasket 51, the trapezoidal insert 52 being plugged into the trapezoidal slot 31 and the slot hole 11, and the outer wall of the gasket 51 being attached to the inner wall of the window beam 3 to enhance the radial limiting ability of the bearing retainer on the rolling elements. The auxiliary support block 5 protects the window beam 3. The sealing ring 6 is detachably fixed to the top of the first annular frame 1 and can prevent the trapezoidal insert 52 from being separated from the trapezoidal slot 31 .

[0039] In one embodiment, sheet metal is formed through bending, stamping, and other processes into a first annular frame 1, a second annular frame 2, and a window beam 3 connecting the first and second annular frames 1 and 2, thereby preliminarily forming the framework structure of the assembled retainer. Slot holes 11 are defined within the inner side of the first annular frame 1, and trapezoidal slots 31 are defined within the inner side of the window beam 3. The slot holes 11 and the trapezoidal slots 31 complement each other and correspond one-to-one. The widths of the slot holes 11 and the trapezoidal slots 31 gradually decrease as they approach the central axis of the retainer. The trapezoidal inserts 52 of the auxiliary support block 5 are sequentially inserted into the slot holes 11 and the trapezoidal slots 31. Specifically, the trapezoidal plug-in block 52 of the auxiliary support block 5 is first inserted into the slot hole 11, and then penetrates the slot hole 11 and is inserted into the trapezoidal slot 31, so that the outer wall of the gasket 51 fits against the inner wall of the window beam 3, thereby realizing the assembly of the gasket 51 on the inner side of each window beam 3, realizing the protection of the inner side of the window beam 3, and the gasket 51 and the window beam 3 jointly form a radial limit for the rolling body, thereby improving the stability of the rolling body during operation.

[0040] It should be noted that in the prior art, most assembled retainers, in order to increase the thickness of the window beam 3 of the retainer, often adopt a separate design of the window beam 3 and the annular frame, which greatly reduces the structural strength of the retainer itself.

[0041] In one embodiment, the slot hole 11 has the same shape as the cross section of the trapezoidal slot 31, and the slot hole 11 is located in the extension direction of the trapezoidal slot 31. The trapezoidal insert block 52 cooperates with the trapezoidal slot 31, and the trapezoidal insert block 52 is inserted into the trapezoidal slot 31 and the slot hole 11, effectively preventing the trapezoidal insert block 52 from detaching from the window beam 3 in the radial direction of the retaining frame, thereby achieving a tight fit between the auxiliary support block 5 and the window beam 3. The gasket 51 of the assembled auxiliary support block 5 is tightly attached to the inner wall of the window beam 3, thereby protecting the inner side of the window beam 3. It should be noted that when the bearing is working, the inner wall of the retaining frame is more easily damaged than the outer wall. Therefore, the auxiliary support block 5 is set at the inner wall position of the retaining frame.

[0042] In one embodiment, after the trapezoidal inserts 52 of each auxiliary support block 5 are inserted into the trapezoidal slots 31, a blocking ring 6 is fixed to the top of the first annular frame 1 to prevent the trapezoidal inserts 52 inserted into the trapezoidal slots 31 from falling out of the trapezoidal slots 31. The blocking ring 6 is annular and has the same thickness as the first annular frame 1.

[0043] Preferably, the sum of the length of the trapezoidal slot 31 and the length of the slot hole 11 is equal to the length of the trapezoidal plug 52, and the top of the trapezoidal plug 52 abuts against the blocking ring 6, effectively preventing the trapezoidal plug 52 from slipping relative to the window beam 3 in its extension direction.

[0044] Preferably, a threaded hole 13 is provided on the first annular frame 1, and a countersunk hole 62 aligned with the threaded hole 13 is provided on the sealing ring 6. The countersunk bolt passes through the countersunk hole 62 and is screwed into the threaded hole 13, which facilitates the disassembly and assembly of the sealing ring 6, and further facilitates the disassembly and installation of each auxiliary support block 5.

[0045] In one embodiment, if an auxiliary support block 5 is damaged, the first annular frame 1 and the sealing ring 6 are separated by removing the countersunk bolts. The damaged auxiliary support block 5 is then removed from the trapezoidal slot 31 and replaced with a new one. The sealing ring 6 is then placed on top of the first annular frame 1 and fastened to the first annular frame 1 using countersunk bolts, thus replacing the single auxiliary support block 5. This significantly reduces the cost of the bearing cage compared to replacing the entire cage.

[0046] Preferably, the number of threaded holes 13 and countersunk holes 62 is the same and is at least 2, so as to ensure the stability of the connection between the sealing ring 6 and the first annular frame 1 .

[0047] Preferably, an annular groove 12 is formed on the side of the first annular frame 1 away from the window beam 3. The annular groove 12 is located on the inner side of the first annular frame 1. The thickness of the blocking ring 6 is consistent with that of the annular frame. The bottom of the blocking ring 6 protrudes with an annular protrusion 61 that cooperates with the annular groove 12. When the blocking ring 6 is installed on the top of the first annular frame 1, the annular protrusion 61 is located in the annular groove 12. The annular protrusion 61 cooperates with the annular groove 12, effectively increasing the contact area between the blocking ring 6 and the first annular frame 1 and improving the connection stability of the blocking ring 6 and the first annular frame 1. At the same time, when the bearing is running at high speed, the annular protrusion 61 of the blocking ring 6 abuts against the inner wall of the first annular frame 1, which can overcome a certain centrifugal force and prevent relative deviation between the blocking ring 6 and the first annular frame 1 when the bearing is running. The annular protrusion 61 cooperates with the annular groove 12 to also play a positioning role for the blocking ring 6, ensuring that the blocking ring 6 can be accurately installed in the first annular frame 1.

[0048] Preferably, first transition chamfers 511 are provided between both sides of the gasket 51 and the trapezoidal insert 52 to prevent excessive stress concentration between the gasket 51 and the trapezoidal insert 52 and improve the structural stability of the auxiliary support block 5 .

[0049] In one embodiment, if Figure 7-10 As shown, the auxiliary support block 5 has first transition chamfers 511 at both ends of the gasket 51. The transition chamfers can make stress distribution more uniform and prevent fracture between the gasket 51 and the trapezoidal insert 52. The first transition chamfer 511 located on the side near the second annular frame 2 also serves as a guide, facilitating the insertion of the trapezoidal insert 52 into the trapezoidal slot 31 and reducing the adverse effects of the gasket 51 on the insertion of the trapezoidal insert 52.

[0050] Preferably, the length of the gasket 51 is equal to the length of the window beam 3 , and the side wall of the gasket 51 abuts against the rolling body, so that the gasket 51 fully protects the inner side of the window beam 3 .

[0051] Preferably, the thickness of the gasket 51 varies. A gasket 51 of appropriate thickness can be selected based on actual bearing requirements and assembled to the inner side of the cage, thereby adapting the bearing to different application scenarios. The thickness of the gasket 51 is no greater than the thickness of the window beam 3 to ensure stability after the gasket 51 is assembled to the window beam 3.

[0052] In one embodiment, auxiliary support blocks 5 with shims 51 of appropriate thickness can be selected based on actual needs to adapt to the bearing's operating environment. By installing shims 51 inside the window beam 3, the cage provides a more stable support environment for the rolling elements. In high-precision machine tool spindle bearings, increasing the thickness of the window beam 3 helps maintain an even distribution of rolling elements, reducing shaking and offset during operation.

[0053] Preferably, the corners of the gasket 51 are provided with rounded corners to prevent the corners of the gasket 51 from scratching the human body when the gasket 51 is installed.

[0054] Preferably, the gasket 51 and the trapezoidal insert 52 are integrally formed to improve the overall structural strength of the auxiliary support block 5 .

[0055] When using the above-mentioned easy-to-assemble retainer, the basic structural strength of the retainer is ensured by adopting an integrated first annular frame 1, window beam 3, and second annular frame 2. By assembling an auxiliary support block 5 inside the window beam 3, the retainer's radial limiting ability for the rolling elements is improved, thereby increasing the stability of the bearing operation. The auxiliary support block 5 is installed inside the window beam 3 using a plug-in method, which is convenient and easy to assemble the retainer. A blocking ring 6 is provided at the top of the first annular frame 1 to prevent the auxiliary support block 5 from detaching from the window beam 3.

[0056] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A retainer that is easy to assemble, comprising a first annular frame and a second annular frame that are arranged opposite to each other, and a plurality of window beams connecting the first annular frame and the second annular frame, wherein window holes for mounting rolling elements are formed between adjacent window beams, characterized in that: The first annular frame, the second annular frame and the window beam are integrally formed, a trapezoidal slot is provided on the inner side of each window beam, and a slot hole is provided on the first annular frame to match the trapezoidal slot; The retaining frame also includes an auxiliary support block and a sealing ring. The auxiliary support block includes a gasket and a trapezoidal plug-in block fixed to the outside of the gasket. The trapezoidal plug-in block is inserted into the trapezoidal slot and the slot hole. The outer wall of the gasket is fitted to the inner wall of the window beam. The sealing ring is detachably fixed to the top of the first annular frame and can prevent the trapezoidal plug-in block from detaching from the trapezoidal slot.

2. A retainer that is easy to assemble according to claim 1, characterized in that: The sum of the length of the trapezoidal slot and the length of the slot hole is equal to the length of the trapezoidal plug-in block, and the top of the trapezoidal plug-in block abuts against the blocking ring.

3. The easy-to-assemble retainer according to claim 1, characterized in that: A threaded hole is provided on the first annular frame, a countersunk hole aligned with the threaded hole is provided on the blocking ring, and a countersunk bolt passes through the countersunk hole and is screwed into the threaded hole.

4. The easy-to-assemble retainer according to claim 3, characterized in that: The number of the threaded holes and the countersunk holes is the same and is at least 2.

5. The easy-to-assemble retainer according to claim 1, characterized in that: An annular groove is provided on the side of the first annular frame away from the window beam, and the annular groove is located on the inner side of the first annular frame. The thickness of the sealing ring is consistent with the thickness of the annular frame, and an annular protrusion is protruded from the bottom of the sealing ring to cooperate with the annular groove.

6. The easy-to-assemble retainer according to claim 1, characterized in that: A first transition chamfer is provided between the two sides of the gasket and the trapezoidal insert.

7. The easy-to-assemble retainer according to claim 1, characterized in that: The length of the gasket is equal to the length of the window beam, and the side wall of the gasket abuts against the rolling body.

8. The easy-to-assemble retainer according to claim 1, characterized in that: The thickness of the gasket has various types, and the thickness of the gasket is no greater than the thickness of the window beam.

9. The easy-to-assemble retainer according to claim 1, characterized in that: The corners of the gasket are provided with rounded corners.

10. The easy-to-assemble retainer according to claim 1, characterized in that: The gasket and the trapezoidal insert are integrally formed.

Images