Split type deep groove ball bearing retainer and bearing

Abstract

The utility model discloses a split type deep groove ball bearing retainer and a bearing, and belongs to the field of bearing retainers. The retainer comprises a retainer body, the retainer body comprises a first retainer body and a second retainer body which are buckled with each other, the first retainer body and the second retainer body respectively comprise pocket parts which are arranged at equal intervals in the circumferential direction of the first retainer body and the second retainer body, and connecting rings, namely a first connecting ring and a second connecting ring, are arranged between every two adjacent pocket parts; the first connecting ring is provided with a first containing groove and a first through hole, and the first through hole is located in the first containing groove. The second connecting ring is provided with a second containing groove and a second through hole, the second through hole is located in the second containing groove, the first containing groove corresponds to the second containing groove in position, and the first through hole corresponds to the second through hole in position. The fastener penetrates through the first through hole and the second through hole, and the fastener is contained in the first containing groove and the second containing groove. The technical problem that an existing split type deep groove ball bearing retainer is poor in durability is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing retainers, in particular to a split deep groove ball bearing retainer and a bearing. Background Art

[0002] The split deep groove ball bearing cage is used to secure and guide the rolling elements in the bearing. Compared with the traditional one-piece bearing cage, the split deep groove ball bearing cage is easier to assemble and can be more easily disassembled and reassembled when maintenance or replacement is required, reducing maintenance costs and time.

[0003] Similarly, compared with the integrated bearing cage, the split deep groove ball bearing cage has the hidden danger of connection stability. In order to ensure its stability during operation, fasteners such as rivets and pins are usually used to stabilize its assembly. However, these fasteners will change the overall structure of the cage, thereby affecting the overall force structure of the cage, generating stress concentration points, and reducing the durability of the cage. Utility Model Content

[0004] The main purpose of the utility model is to provide a split deep groove ball bearing cage, aiming to improve the durability of the current split deep groove ball bearing cage.

[0005] To achieve the above-mentioned purpose, the utility model proposes a split deep groove ball bearing cage, comprising:

[0006] The frame includes a first frame and a second frame that are interlocked, the first frame and the second frame each including pockets equidistantly arranged along their circumferences, and a connecting ring between two adjacent pockets, namely a first connecting ring and a second connecting ring;

[0007] The first connecting ring is provided with a first receiving groove and a first through hole, and the first through hole is located in the first receiving groove;

[0008] The second connecting ring is provided with a second receiving groove and a second through hole, the second through hole is located in the second receiving groove, the first receiving groove corresponds to the second receiving groove, and the first through hole corresponds to the second through hole;

[0009] A fastener passes through the first through hole and the second through hole, and is accommodated in the first accommodating groove and the second accommodating groove.

[0010] Optionally, in an embodiment of the present invention, an oil groove is provided in the pocket portion.

[0011] Optionally, in an embodiment of the present invention, the oil groove is an annular groove, which is opened along the circumference of the pocket portion and is connected from end to end.

[0012] Optionally, in an embodiment of the present invention, a storage groove is further included, and the storage groove is communicated with the annular groove.

[0013] Optionally, in one embodiment of the present invention, the edge of the annular groove is rounded, and / or,

[0014] The sides and corners of the storage slot are rounded.

[0015] Optionally, in an embodiment of the present invention, the fastener is a rivet.

[0016] Optionally, in an embodiment of the present invention, the first receiving groove gradually widens along the direction from the first frame to the second frame, and the head of the rivet is located in the first receiving groove.

[0017] Optionally, in an embodiment of the present invention, the pocket hole is a spherical hole, a circular hole or a conical hole.

[0018] Optionally, in an embodiment of the present invention, one of the first frame and the second frame has a positioning protrusion, and the other has a positioning groove.

[0019] To achieve the above-mentioned object, the present invention further provides a bearing comprising the split deep groove ball bearing retainer as described above.

[0020] Compared with the prior art, the present invention can at least achieve the following beneficial effects. When the current split deep groove ball bearing retainer is fixing the two frames, the fasteners used usually protrude from a part of the frame, causing the force structure of the frame to change and stress concentration points to appear. After the bearing rotates for a long time, the stress concentration points are prone to damage, breakage and other problems. In order to solve this problem, the first frame and the second frame in this solution are respectively provided with a first receiving groove and a second receiving groove for accommodating the fasteners to prevent the fasteners from protruding from the frame after installation. By providing the first receiving groove and the second receiving groove, the fasteners are located in the receiving grooves, preventing the fasteners from protruding from the frame, ensuring that the overall structure of the retainer is symmetrical, its overall force is evenly distributed, and improving the durability of the retainer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Figure 1 This is a structural diagram of an embodiment of a split deep groove ball bearing cage of the utility model;

[0023] Figure 2 This is a top view of the second frame of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the first connecting ring and the second connecting ring in the present invention.

[0025] Description of Figure Numbers:

[0026] 110, first frame; 111, first connecting ring; 112, first receiving groove; 120, second frame; 121, second connecting ring; 122, second receiving groove; 130, pocket; 200, fastener; 310, positioning protrusion; 320, positioning groove; 400, oil groove; 410, annular groove; 420, storage groove;

[0027] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] 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.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] Reference Figures 1 to 3 The utility model provides a split deep groove ball bearing cage, comprising:

[0033] The frame includes a first frame 110 and a second frame 120 that are interlocked. The first frame 110 and the second frame 120 each include pockets 130 equidistantly arranged along their circumferences. A connecting ring, namely a first connecting ring 111 and a second connecting ring 121, is located between two adjacent pockets 130.

[0034] The first connecting ring 111 defines a first receiving groove 112 and a first through hole, and the first through hole is located in the first receiving groove 112;

[0035] The second connecting ring 121 is provided with a second receiving groove 122 and a second through hole. The second through hole is located in the second receiving groove 122. The first receiving groove 112 corresponds to the second receiving groove 122, and the first through hole corresponds to the second through hole.

[0036] The fastener 200 passes through the first through hole and the second through hole, and is accommodated in the first receiving groove 112 and the second receiving groove 122 .

[0037] When the current split-type deep groove ball bearing retainer is used to fix the two frames, the fasteners 200 used usually protrude from a part of the frame, causing the force structure of the frame to change and stress concentration points to appear. After the bearing rotates for a long time, the stress concentration points are prone to damage, fracture and other problems. To solve this problem, the first frame 110 and the second frame 120 in this solution are respectively provided with a first receiving groove 112 and a second receiving groove 122 for accommodating the fastener 200, so as to prevent the fastener 200 from protruding from the frame after installation. By providing the first receiving groove 112 and the second receiving groove 122, the fastener 200 is located in the receiving groove, preventing the fastener 200 from protruding from the frame, ensuring that the overall structure of the retainer is symmetrical, the force is evenly applied to all parts of the retainer, and the durability of the retainer is improved.

[0038] To ensure a precise fit between the first and second frames 110, 120 and maintain the pocket shape, a positioning protrusion 310 is provided on one of the first and second frames 110, 120, and a positioning recess 320 is provided on the other. When the positioning protrusion 310 enters the recess 320, the first and second frames 110, 120 are securely engaged. It should be understood that multiple positioning protrusions 310 and recesses 320 may be provided. When multiple positioning protrusions 310 and recesses 320 are provided, the corresponding positioning protrusions 310 and recesses 320 must be aligned. Furthermore, when the positioning protrusion 310 enters the recess 320, it also provides a certain degree of pre-connection between the first and second frames 110, 120, preventing relative rotation between the first and second frames 110, 120 during subsequent connection steps and ensuring a secure connection. Specifically, the positioning groove 320 corresponds to the shape of the positioning protrusion 310, and can be selected from, for example, a semicircular protrusion and a semicircular groove, a conical protrusion and a conical groove, etc. The positioning groove 320 and the positioning protrusion 310 can be set on the connecting ring.

[0039] Furthermore, the pocket 130 is provided with an oil groove 400. During the operation of the bearing, lubricating oil is stored in the oil groove 400 of the pocket 130, timely replenishing the lubricating oil to the rollers, ensuring that the rollers always have sufficient lubricating oil during operation, thereby reducing the friction coefficient during operation. Furthermore, the provision of the oil groove 400 reduces the contact area between the rollers and the inner wall of the pocket, thereby reducing friction.

[0040] In one embodiment, the oil groove 400 is an annular groove 410 connected end to end. As the lubricating oil flows into the annular groove 410, it is temporarily stored therein. Furthermore, as the roller rolls, the lubricating oil in the oil groove 400 continuously adheres to the surface of the roller, forming an oil film between the roller and the frame, thereby reducing friction and heat generation.

[0041] Furthermore, a storage groove 420 is provided in the pocket portion 130 and is in communication with the annular groove 410. As the roller rotates, some lubricating oil is carried away from the oil groove 400. To prevent the amount of lubricating oil in the oil groove 400 from being too low, the storage groove 420 is in communication with the annular groove 410. The lubricating oil in the storage groove 420 supplements the lubricating oil in the annular groove 410. When the amount of lubricating oil in the annular groove 410 is high, the lubricating oil flows into the storage groove 420 for temporary storage. When the amount of lubricating oil in the annular groove 410 is low, the lubricating oil in the storage groove 420 flows into the annular groove 410 for replenishment.

[0042] Both annular groove 410 and storage groove 420 have edges or corners that come into contact with the roller. To reduce friction at these contact points, the edges of annular groove 410, as well as the edges of storage groove 420 and the corners where they meet, are rounded. This rounding reduces the amount of obstruction to the lubricating oil flowing through the oil groove or storage groove at the corners, while also reducing the contact area between the roller and the edges or corners, thereby reducing friction.

[0043] In another embodiment, the oil groove 400 is formed in a spiral structure within the pocket. This spiral oil groove 400 provides a larger oil storage space and a wider coverage area for the roller, providing sufficient lubricating oil to all parts of the roller during operation. Furthermore, the spiral oil groove 400 not only stores more lubricating oil but also circulates the lubricating oil through its spiral shape. However, spiral oil grooves are inevitably more difficult to manufacture than annular oil grooves.

[0044] The annular groove 410 is used in situations where stable lubrication is required, and the spiral oil groove 400 is used in situations where higher lubrication requirements are required. Therefore, oil grooves 400 of different structures can be selected according to different working requirements, and are not limited here.

[0045] Furthermore, the fasteners 200 connecting the first frame 110 and the second frame 120 are preferably rivets. Compared with other types of fasteners 200, rivets do not require additional fastening components for connection, and the installation process is relatively simple. In addition, rivet connections are relatively easy to inspect and replace during maintenance of the retaining frame.

[0046] Specifically, the head of the rivet is located in the first receiving groove 112. For ease of explanation, the direction from the first frame 110 to the second frame 120 is defined as from top to bottom. The structure of the first receiving groove 112 gradually widens from top to bottom. During the tightening process of the rivet, the rivet head will gradually press downward and expand. The structure of the first receiving groove 112 corresponds to the changing trend of the rivet head. During the tightening process of the rivet, the head presses downward and expands, gradually filling the first receiving groove 112. The tail of the rivet is located in the second receiving groove 122, firmly connecting the first frame 110 and the second frame 120 together.

[0047] It is understandable that by changing the shape of the pocket portion 130 , the retainer can be used for bearings with different roller types. For example, the shape of the pocket portion 130 can be a spherical hole, a circular hole, a tapered hole, etc.

[0048] In addition, the present invention also provides a bearing including the retaining frame described above. Since the bearing adopts all the technical solutions of the retaining frame described above, it also has all the beneficial effects described above, which will not be described in detail here.

[0049] The above are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention specification and drawings, or direct / indirect applications in other related technical fields, within the inventive concept of the present invention, are included in the patent protection scope of the present invention.

Claims

1. A split deep groove ball bearing cage, characterized in that: include: The frame includes a first frame and a second frame that are interlocked, the first frame and the second frame each including pockets equidistantly arranged along their circumferences, and a connecting ring between two adjacent pockets, namely a first connecting ring and a second connecting ring; The first connecting ring is provided with a first receiving groove and a first through hole, and the first through hole is located in the first receiving groove; The second connecting ring is provided with a second receiving groove and a second through hole, the second through hole is located in the second receiving groove, the first receiving groove corresponds to the second receiving groove, and the first through hole corresponds to the second through hole; A fastener passes through the first through hole and the second through hole, and is accommodated in the first accommodating groove and the second accommodating groove.

2. The split deep groove ball bearing retainer according to claim 1, characterized in that: The pocket portion is provided with an oil groove.

3. The split deep groove ball bearing retainer according to claim 2, characterized in that: The oil groove is an annular groove, which is opened along the circumference of the pocket portion and communicates end to end.

4. The split deep groove ball bearing retainer according to claim 3, characterized in that: It also includes a storage groove, which is communicated with the annular groove.

5. The split deep groove ball bearing retainer according to claim 4, characterized in that: The edges of the annular groove are rounded, and / or, The sides and corners of the storage slot are rounded.

6. The split deep groove ball bearing retainer according to claim 1, wherein: The fastener is a rivet.

7. The split deep groove ball bearing retainer according to claim 6, characterized in that: The first receiving groove gradually widens along the direction from the first frame to the second frame, and the head of the rivet is located in the first receiving groove.

8. The split deep groove ball bearing cage according to any one of claims 1 to 7, characterized in that: The pocket hole is a spherical hole, a circular hole or a conical hole.

9. The split deep groove ball bearing cage according to any one of claims 1 to 8, characterized in that: One of the first frame and the second frame has a positioning protrusion, and the other has a positioning groove.

10. A bearing, characterized in that: The invention comprises a split deep groove ball bearing retainer as claimed in any one of claims 1 to 9.

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