Ball bearing retainer

Abstract

The utility model discloses a ball bearing retainer and relates to the technical field of bearings. Comprising a bearing frame body, and the bearing frame body is of an annular structure; the reinforcing ribs are distributed and connected with the bearing frame body in a T shape along one side of the axis direction of the bearing frame body; the reinforcing ribs are arranged in the circumferential direction of the bearing frame body at equal intervals to form supporting rings used for bearing rolling bodies. The outer diameter of the supporting ring is cut, so that a sunken part sunken in the bearing frame body is formed in the radial direction of the supporting ring; a guide transition section extending in the circumferential direction of the bearing frame body is formed between the concave part and the bearing frame body; the weight of the bearing retainer is reduced through the concave parts, the supporting force of the supporting rings formed by the reinforcing ribs to the rolling bodies is improved through the guide transition sections, the gap between the bearing retainer and the bearing outer ring is shortened, and vibration and collision occurring in the operation process of the bearing retainer are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearings, and in particular relates to a ball bearing retainer. Background Art

[0002] Bearings are important components commonly used in mechanical equipment. The main function of bearings is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotation accuracy.

[0003] The bearing includes an inner ring, an outer ring and a bearing cage; the bearing cage is used to hold the rolling elements. Since the bearing needs to withstand high rotation speeds and complex loads during operation, the cage in the bearing will be subject to great centrifugal force and impact force. If the gap between the bearing cage and the inner and outer rings of the bearing is too large, it is easy to cause vibration and mutual collision between the bearing cage and the inner and outer rings under the action of a large impact force, resulting in mutual wear and noise, and further reducing the life of the bearing. Moreover, since the gap between the bearing cage and the inner and outer rings is too large, it is easy for the bearing lubricant to be brushed out of the bearing under the action of high-speed rotation, resulting in insufficient lubrication between the rolling elements and the bearing cage and between the inner and outer rings of the bearing, and accelerated wear. Therefore, the design of the bearing cage is particularly important.

[0004] Moreover, in order to adapt to high-speed rotation, the bearing retainer needs to be appropriately reduced in weight. However, weight reduction will also affect the strength of the bearing retainer, causing the mechanical strength of the bearing retainer to decrease. How to achieve the mechanical strength of the bearing retainer to further reduce the quality of the entire bearing and further adapt to high-speed rotation applications is a technical problem that needs to be solved. Utility Model Content

[0005] The utility model provides a ball bearing cage to solve the problems that lubricating oil cannot fully lubricate the rolling element and the bearing cage or even the bearing, the vibration and noise caused by the excessive gap between the bearing cage and the inner and outer rings of the bearing, and how to achieve lightweight bearings while ensuring bearing strength.

[0006] The technical solution adopted by the utility model is:

[0007] A ball bearing cage, comprising:

[0008] A bearing frame body, wherein the bearing frame body has a circular ring structure;

[0009] A reinforcing rib, wherein the reinforcing rib is connected to the bearing frame body in a T-shaped distribution along one side of the axial direction of the bearing frame body;

[0010] The reinforcing ribs are arranged at equal intervals along the circumferential direction of the bearing frame body to form a support ring for carrying rolling elements; the outer diameter of the support ring is cut so that a recessed portion recessed in the bearing frame body is provided along the radial direction of the support ring; a guide transition section extending along the circumferential direction of the bearing frame body is formed between the recessed portion and the bearing frame body.

[0011] A rolling element bearing cage of the utility model also has the following additional technical features:

[0012] The guide transition section has a first arc segment and a second arc segment; the first arc segment is connected to the reinforcing rib on one side along the axial direction of the bearing retainer, and is connected to the second arc segment on the other side along the axial direction of the bearing retainer body.

[0013] The radial dimension of the first arc segment along the axial direction of the bearing frame body gradually increases from the side close to the reinforcing rib to the side close to the second arc segment.

[0014] The second arc segment has a cylindrical outer abutment surface in the circumferential direction, and the bottom of the second arc segment along the axial direction of the bearing frame body has a planar connection surface.

[0015] The bearing frame body has a flow groove that penetrates along the radial direction of the bearing frame body; one side of the flow groove along the axial direction of the bearing frame body has a first opening facing downward; the other side of the flow groove along the axial direction of the bearing frame body does not penetrate the bearing frame body, and forms a top flow surface of the flow groove in the bearing frame body.

[0016] Both sides of the top flow surface of the flow groove have arc-shaped guide surfaces symmetrically distributed along the circumferential direction of the bearing frame body; along the axial direction of the bearing frame body, the distance between the two arc-shaped guide surfaces gradually increases from the side of the reinforcing rib to the side of the bearing frame body.

[0017] The reinforcing rib includes a rib claw and a rib body; the rib body is used to connect with the guide transition section, and the rib claw is symmetrically arranged on both sides of the rib body along the circumferential direction of the bearing frame body.

[0018] A lubrication groove for the circulation of lubricating oil is formed between the inner side walls of the two rib claws on the rib body and the top surface of the rib body. The lubrication groove has a second opening facing upward along the axial direction of the bearing frame body.

[0019] A pocket hole for carrying a rolling body is formed between two adjacent reinforcing ribs, the rib claws of the two adjacent reinforcing ribs can enclose and lock the rolling body, and the inner wall surface of the pocket hole can extend into the bearing frame body along the axial direction of the bearing frame body.

[0020] The rib body has an oil guide groove on its inner circumferential surface along the bearing retainer, one end of the oil guide groove along the axial direction of the bearing retainer passes through the top surface of the rib body, and the other end of the oil guide groove along the axial direction of the bearing retainer does not pass through the bottom surface of the rib body, and guide fillets are formed between the inner walls on both sides of the oil guide groove along the circumferential direction of the bearing retainer and the rib body.

[0021] A guide surface for the flow of lubricating fluid is formed between the outer edge of the second opening and the pocket; the guide surface includes a first guide surface and a second guide surface connected to each other, the first guide surface is arranged along an end surface perpendicular to the axial direction of the bearing frame body, and the second guide surface is connected to the first guide surface at an angle toward one side of the pocket.

[0022] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0023] 1. A ball bearing retainer, comprising: a bearing frame body, the bearing frame body having a circular ring structure; reinforcing ribs, the reinforcing ribs being connected to the bearing frame body in a T-shaped distribution along one side of the axial direction of the bearing frame body; the reinforcing ribs being arranged at equal intervals along the circumferential direction of the bearing frame body to form a support ring for carrying rolling elements; the outer diameter of the support ring is cut so that a recessed portion is provided in the radial direction of the support ring and is recessed in the bearing frame body; a guide transition section extending along the circumferential direction of the bearing frame body is formed between the recessed portion and the bearing frame body.

[0024] The bearing frame body serves as the main carrier of the bearing cage and plays a supporting role for the entire bearing cage. The bearing frame body structure is annular, realizing an integrated design in the circumferential direction, further improving the overall strength of the entire bearing cage; the reinforcing ribs are distributed on one side of the bearing frame body along the axial direction and can be T-shaped with the bearing frame body, realizing a cross connection between the reinforcing ribs and the bearing frame body, and strengthening the connection strength between the reinforcing ribs and the bearing frame body; and the reinforcing ribs can be arranged at equal intervals along the circumferential direction of the bearing frame body, further providing space for constructing the supporting part of the rolling body, so that a plurality of reinforcing ribs along the circumference of the bearing frame body form a supporting ring for supporting the rolling body;

[0025] The outer diameter of the support ring is cut so that the support ring has a recessed portion relative to the bearing frame body in the radial direction, thereby further reducing the weight of the bearing cage while ensuring the overall supporting strength of the entire bearing cage, thereby achieving a lightweight design; a guide transition section extending along the circumferential direction of the bearing cage body is formed between the recessed portion and the bearing frame body, and the guide transition section is protruding relative to the recessed portion, which can further increase the support strength of the support ring formed by the reinforcing ribs to the rolling elements, thereby further increasing the strength of the entire bearing cage and being more adaptable to complex loads; and due to the provision of the guide transition section protruding from the recessed portion, the gap between the bearing cage and the outer ring of the bearing can be further shortened, thereby reducing vibration and collision caused by excessive gap during operation of the bearing cage, resulting in the bearing cage and the outer ring or The life of the bearing is reduced due to the friction between the bearing cage and the inner ring, thereby improving the adaptability of the entire bearing cage to complex working conditions and being more adaptable to high-speed operation; and the guide transition section is between the cage body and the recessed portion, which can increase the flow path between the rolling elements in the support ring and the cage body, and further increase the flow area of ​​the lubricating oil between the bearing cage and the rolling elements. Such a setting can correspondingly improve the lubricating effect of the lubricating oil, and ensure that the lubricating oil can be fully lubricated between the bearing cage and the rolling elements. The lubricating oil is quickly guided and diffused to the entire bearing cage along the guide transition section, avoiding that part of the lubricating oil is thrown out of the bearing cage under the centrifugal force of high-speed operation, resulting in the failure of this part of the lubricating oil to participate in the lubrication in time, resulting in insufficient lubrication, thereby further enhancing the lubrication effect.

[0026] 2. As a preferred embodiment, the guide transition section has a first arc segment and a second arc segment; the first arc segment is connected to the reinforcing rib on one side along the axial direction of the bearing retainer, and the first arc segment is connected to the second arc segment on the other side along the axial direction of the bearing retainer body. By setting the first arc segment to be connected to the reinforcing rib and the second arc segment to be connected to the first arc segment, the support ring formed by the reinforcing rib is connected to one side of the retainer body through the first arc segment and the second arc segment, so that the lubricating oil is diffused and guided between the rolling element and the retainer body through the first arc segment and the second arc segment, thereby increasing the flow area of ​​the lubricating oil between the rolling element and the retainer body, making the lubrication between the rolling element and the bearing retainer more sufficient, thereby enhancing the lubrication effect.

[0027] 3. As a preferred embodiment, the radial dimension of the first arc segment gradually increases from the side close to the reinforcing rib to the side close to the second arc segment along the axial direction of the bearing frame body. The setting of the first arc segment gradually increasing in radial dimension from the side close to the reinforcing rib to the other side further improves the first arc segment gradually protruding from the circumference of the reinforcing rib from the one side to the other side along the axial direction of the bearing retainer, which can increase the flow area of ​​the lubricating oil between the reinforcing rib and the retainer body, and further improve the lubrication effect; and the first arc segment protrudes from the circumference of the reinforcing rib, so that the gap between the circumference of the bearing retainer and the outer ring of the bearing is shortened, further enhancing the connection strength between the bearing retainer and the outer ring of the bearing, avoiding vibration and collision of the bearing caused by excessive gap, and further improving the service life of the bearing.

[0028] 4. As a preferred embodiment, the second arc segment has a cylindrical outer abutment surface in the circumferential direction, and the bottom of the second arc segment along the axial direction of the bearing frame body has a planar connection surface. The second arc segment has a cylindrical outer abutment surface in the circumferential direction, so that the outer circumferential surface of the bearing frame body forms a cylindrical structure, thereby further ensuring the coaxiality of the bearing frame body and the outer ring of the bearing. Since the second arc segment is located on the side of the bearing frame body away from the reinforcing rib, the gap between the bearing frame body and the outer ring of the bearing can be further shortened, effectively reducing the vibration and noise generated by the bearing retainer and the outer ring of the bearing under the high-speed operation of the bearing, further reducing the wear between the bearing retainer and the outer ring of the bearing and even the inner ring of the bearing, and improving the service life of the bearing retainer.

[0029] 5. As a preferred embodiment, the bearing frame body has a flow groove that penetrates along the radial direction of the bearing frame body; one side of the flow groove along the axial direction of the bearing frame body has a first opening facing downward; the other side of the flow groove along the axial direction of the bearing frame body does not penetrate the bearing frame body, and forms a top flow surface of the flow groove in the bearing frame body. The bearing frame body is provided with a flow groove that penetrates the bearing retainer in the radial direction, which can further reduce the weight of the bearing frame body and realize the lightweight design of the bearing frame body; and the provision of the flow groove can further enhance the flow area of ​​the lubricating oil between the bearing frame body and the rolling element, so that the lubricating oil flowing through the bearing frame body is further diffused from all directions through the flow groove to the support ring formed by the reinforcing ribs, thereby further improving the lubrication between the rolling element and the reinforcing ribs and improving the service life of the entire bearing retainer. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0031] Figure 1 A side view structural diagram of a ball bearing cage in one embodiment of the utility model;

[0032] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0033] Figure 3 A top view of a ball bearing cage according to an embodiment of the utility model;

[0034] In the figure,

[0035] 1 bearing frame body;

[0036] 2 reinforcing ribs, 21 rib bodies, 22 rib claws;

[0037] 3 guide transition section, 4 first arc section, 5 second arc section, 6 flow groove, 7 arc guide surface, 8 lubrication groove, 9 pocket hole;

[0038] 10 guide surface, 101 first guide surface, 102 second guide surface;

[0039] 11 Oil guide groove. DETAILED DESCRIPTION

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0041] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0044] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0045] The utility model relates to a ball bearing retainer, such as Figure 1-3 As shown, it includes: a bearing frame body 1, which has a circular ring structure; reinforcing ribs 2, which are connected to the bearing frame body 1 in a T-shaped distribution along one side of the axial direction of the bearing frame body 1; the reinforcing ribs 2 are arranged at equal intervals along the circumferential direction of the bearing frame body 1 to form a support ring for carrying rolling elements; the outer diameter of the support ring is cut so that a recessed portion is provided in the radial direction of the support ring and is recessed in the bearing frame body 1; a guide transition section 3 extending circumferentially of the bearing frame body 1 is formed between the recessed portion and the bearing frame body 1.

[0046] The bearing frame body 1 serves as the main carrier of the bearing cage and plays a supporting role for the entire bearing cage. The bearing frame body 1 is annular in structure, realizing an integrated design in the circumferential direction, further improving the overall strength of the entire bearing cage; the reinforcing ribs 2 are distributed on one side of the bearing frame body 1 along the axial direction and can be distributed in a T-shape with the bearing frame body 1, realizing a cross connection between the reinforcing ribs 2 and the bearing frame body 1, and strengthening the connection strength between the reinforcing ribs 2 and the bearing frame body 1; and the reinforcing ribs 2 can be arranged at equal intervals along the circumferential direction of the bearing frame body 1, further providing space for constructing the supporting part of the rolling body, so that the multiple reinforcing ribs 2 along the circumference of the bearing frame body 1 form a supporting ring for supporting the rolling body;

[0047] The outer diameter of the support ring is cut so that the support ring has a recessed portion relative to the bearing frame body 1 in the radial direction, thereby further reducing the weight of the bearing cage while ensuring the overall supporting strength of the entire bearing cage, thereby achieving a lightweight design; a guide transition section 3 extending along the circumferential direction of the bearing frame body 1 is formed between the recessed portion and the bearing frame body 1, and the guide transition section 3 is protruded relative to the recessed portion, which can further improve the support strength of the support ring formed by the reinforcing rib 2 to the rolling element, thereby further improving the strength of the entire bearing cage and being more adaptable to complex loads, and because the setting of the guide transition section 3 protruding from the recessed portion can further shorten the gap between the bearing cage and the outer ring of the bearing, reduce the vibration and collision of the bearing cage caused by the excessive gap during operation, resulting in the bearing cage and the outer ring. The service life is reduced due to the friction between the ring or the bearing retainer and the inner ring, thereby improving the adaptability of the entire bearing retainer to complex working conditions and being more adaptable to high-speed operation; and the guide transition section 3 is between the retainer body and the recessed portion, which can increase the flow path between the rolling elements in the support ring and the retainer body, and further increase the flow area of ​​the lubricating oil between the bearing retainer and the rolling elements. Such a setting can correspondingly improve the lubricating effect of the lubricating oil, and ensure that the lubricating oil can be fully lubricated between the bearing retainer and the rolling elements. The lubricating oil is quickly guided and diffused to the entire bearing retainer along the guide transition section 3, avoiding that part of the lubricating oil is thrown out of the bearing retainer under the centrifugal force of high-speed operation, resulting in the failure of the part of the lubricating oil to participate in the lubrication in time, resulting in insufficient lubrication, thereby further enhancing the lubrication effect.

[0048] It is worth noting that the axial direction of the bearing frame body 1 is consistent with the axial direction of the bearing retainer.

[0049] As a preferred embodiment, the guide transition section 3 has a first arc segment 4 and a second arc segment 5; the first arc segment 4 is connected to the reinforcing rib 2 on one side along the axial direction of the bearing retainer, and the first arc segment 4 is connected to the second arc segment 5 on the other side along the axial direction of the bearing frame body 1.

[0050] By setting the first arc segment 4 to be connected with the reinforcing rib 2, and the second arc segment 5 to be connected with the first arc segment 4, the support ring formed by the reinforcing rib 2 is connected to one side of the retaining frame body through the first arc segment 4 and the second arc segment 5, so that the lubricating oil is diffused and guided between the rolling element and the retaining frame body through the first arc segment 4 and the second arc segment 5, thereby increasing the flow area of ​​the lubricating oil between the rolling element and the retaining frame body, making the lubrication between the rolling element and the bearing retaining frame more sufficient, thereby enhancing the lubrication effect.

[0051] As a preferred embodiment, the radial dimension of the first arc segment 4 along the axial direction of the bearing frame body 1 gradually increases from the side close to the reinforcing rib 2 to the side close to the second arc segment 5 .

[0052] The first arc segment 4 is set to gradually increase its radial dimension from one side close to the reinforcing rib 2 to the other side, further improving the first arc segment 4 gradually protruding from the circumferential side of the reinforcing rib 2 from one side of the reinforcing rib 2 to the other side along the axial direction of the bearing retainer, which can increase the flow area of ​​the lubricating oil between the reinforcing rib 2 and the retainer body, and further improve the lubrication effect; and the first arc segment 4 protrudes from the circumferential side of the reinforcing rib 2, so that the gap between the circumferential side of the bearing retainer and the outer ring of the bearing is shortened, further enhancing the connection strength between the bearing retainer and the outer ring of the bearing, avoiding vibration and collision of the bearing due to excessive gap, and further improving the service life of the bearing.

[0053] As a preferred embodiment, the second arc segment 5 has a cylindrical outer abutment surface in the circumferential direction, and the bottom of the second arc segment 5 along the axial direction of the bearing frame body 1 has a planar connection surface.

[0054] The second arc segment 5 has a cylindrical outer abutment surface in the circumferential direction, so that the outer circumferential surface of the bearing frame body 1 forms a cylindrical structure, thereby further ensuring the coaxiality of the bearing frame body 1 and the bearing outer ring. Since the second arc segment 5 is located on the side of the bearing frame body 1 away from the reinforcing rib 2, the gap between the bearing frame body 1 and the bearing outer ring can be further shortened, effectively reducing the vibration and noise generated by the bearing retainer and the bearing outer ring under the high-speed operation of the bearing, further reducing the wear between the bearing retainer and the bearing outer ring and even the bearing inner ring, and improving the service life of the bearing retainer.

[0055] As a preferred embodiment, the bearing frame body 1 has a flow groove 6 that penetrates along the radial direction of the bearing frame body 1; one side of the flow groove 6 along the axial direction of the bearing frame body 1 has a first opening facing downward; the other side of the flow groove 6 along the axial direction of the bearing frame body 1 does not penetrate the bearing frame body 1, and a top flow surface of the flow groove 6 is formed in the bearing frame body 1.

[0056] The bearing frame body 1 is provided with a flow groove 6 which passes through the bearing retainer in the radial direction, which can further reduce the weight of the bearing frame body 1 and realize the lightweight design of the bearing frame body 1; and the provision of the flow groove 6 can further enhance the flow area of ​​the lubricating oil between the bearing frame body 1 and the rolling element, so that the lubricating oil flowing through the bearing frame body 1 can be further diffused from all directions through the flow groove 6 to the support ring formed by the reinforcing rib 2, thereby further improving the lubrication between the rolling element and the reinforcing rib 2 and improving the service life of the entire bearing retainer.

[0057] As a preferred embodiment, both sides of the top flow surface of the flow groove 6 have arc-shaped guide surfaces 7 symmetrically distributed along the circumferential direction of the bearing frame body 1; along the axial direction of the bearing frame body 1, the distance between the two arc-shaped guide surfaces 7 gradually increases from the side of the reinforcing rib 2 to the side of the bearing frame body 1.

[0058] The two sides of the top flow surface of the flow groove 6 form symmetrically distributed arc guide surfaces 7 in the circumferential direction of the bearing frame body 1. Since the projection of the arc guide surface 7 along the axial direction of the bearing retainer is a trumpet-shaped structure, the lubricating oil can flow along the arc of the arc guide surface 7 under the action of gravity and the centrifugal force of high-speed rotation, which can further enhance the fluidity of the lubricating oil on the bearing frame body 1, further realize the flow speed of the lubricating oil between the first arc segment 4, the second arc segment 5 and the reinforcing rib 2 of the bearing frame body 1, and realize that the lubricating oil is fully lubricated between the bearing frame body 1 and the reinforcing rib 2 and the rolling element, and finally improve the lubrication effect.

[0059] As a preferred embodiment, the reinforcing rib 2 includes a rib claw 22 and a rib body 21; the rib body 21 is used to connect with the guide transition section 3, and the rib claw 22 is symmetrically arranged on both sides of the rib body 21 along the circumferential direction of the bearing frame body 1.

[0060] The rib bodies 21 of the reinforcing ribs 2 are arranged at equal intervals along the circumferential direction of the bearing retainer, and two rib claws 22 are arranged on the side of each rib body 21 facing the axial direction of the bearing retainer and away from the bearing frame body 1. The two rib claws 22 are symmetrically distributed at both ends of the rib body 21 along the circumferential direction of the bearing retainer, so that a lubrication groove 8 for lubricating oil to flow is formed between the two rib claws 22; the support strength of the reinforcing ribs 2 connected to the rolling body is enhanced by arranging the rib bodies 21, and the rolling body is further wrapped and supported by arranging the rib claws 22 on opposite sides of the rib body 21.

[0061] As a preferred embodiment, the inner side walls of the two rib claws 22 on the rib body 21 and the top surface of the rib body 21 enclose a lubrication groove 8 for the circulation of lubricating oil, and the lubrication groove 8 has a second opening facing upward along the axial direction of the bearing frame body 1.

[0062] like Figure 1 As shown, the rib claw 22 has an outer wall facing the rib body 21 and an inner wall facing away from the rib body 21 along the circumferential direction of the bearing retainer, and both the outer wall and the inner wall are arc surfaces. A lubrication groove 8 is formed between the outer walls of the two rib claws 22 on the same rib body 21. The lubrication groove 8 has a second opening along the axial direction of the bearing frame body 1, so that the lubricating oil can flow to between the rolling element and the reinforcing rib 2 at the second opening of the lubrication groove 8, further enhancing the flow area of ​​the lubrication groove 8 between the rolling element and the bearing retainer, thereby enhancing the lubrication effect.

[0063] As a preferred embodiment, a pocket 9 for carrying a rolling body is formed between two adjacent reinforcing ribs 2, the rib claws 22 of the two adjacent reinforcing ribs 2 can enclose to form a lock for the rolling body, and the inner wall surface of the pocket 9 can extend into the bearing frame body 1 along the axial direction of the bearing frame body 1.

[0064] A pocket hole 9 is formed between the rib claws 22 of two adjacent reinforcing ribs 2. The pocket hole 9 realizes a space for carrying the rolling body. Since the inner side wall of the rib claw 22 is an arc surface, a structure that can enclose the outer peripheral surface of the rolling body can be formed, so that the rolling body can be wrapped and locked, so that the rolling body can rotate in the pocket hole 9; and in order to increase the wrapping range of the rolling body and realize effective support for the rolling body, the inner wall surface of the pocket hole 9 is extended into the bearing frame body 1 along the axial direction of the bearing frame body 1, such as Figure 1 and Figure 2 As shown, the inner wall surface of the pocket 9 can be extended into the first arc segment 4 along the axial direction of the bearing frame body 1, further increasing the contact area between the rolling body and the pocket 9, increasing the internal space wrapped around the rolling body, and improving the support strength of the bearing retainer for the rolling body.

[0065] As a preferred embodiment, the rib body 2 has an oil guide groove 11 on the inner circumferential surface along the bearing retainer, one end of the oil guide groove 11 along the axial direction of the bearing retainer passes through the top surface of the rib body 21, and the other end of the oil guide groove 11 along the axial direction of the bearing retainer does not pass through the bottom surface of the rib body 21, and guide fillets are formed between the inner walls on both sides of the oil guide groove 11 along the circumferential direction of the bearing retainer and the rib body 21.

[0066] The oil guide groove 11 can store part of the lubricating oil, and further increase the flow area between the rolling element and the bearing cage, thereby enhancing the fluidity of the lubricating oil and enhancing the lubrication effect between the rolling element and the bearing cage.

[0067] As a preferred embodiment, a guide surface 10 for the flow of lubricating fluid is formed between the outer edge of the second opening and the pocket 9; the guide surface 10 includes a first guide surface 101 and a second guide surface 102 connected to each other, the first guide surface 101 is arranged along an end surface perpendicular to the axial direction of the bearing frame body 1, and the second guide surface 102 is connected to the first guide surface 101 at an angle toward the side of the pocket 9.

[0068] like Figure 1 and Figure 2 As shown, the outer edge of the second opening is provided with a guide surface 10 for the purpose of enhancing the fluidity of the lubricating oil between the rolling element and the bearing retainer. The guide surface 10 includes a first guide surface 101 and a second guide surface 102. The first guide surface 101 is a planar structure, and the second guide surface 102 can be arranged inclined relative to the first guide surface 101. The purpose is to enhance the lubricating oil from the bearing retainer to the inner wall of the pocket hole 9 to achieve sufficient lubrication of the rolling element.

[0069] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0070] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0071] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A ball bearing cage, characterized in that: include: A bearing frame body, wherein the bearing frame body has a circular ring structure; A reinforcing rib, wherein the reinforcing rib is connected to the bearing frame body in a T-shaped distribution along one side of the axial direction of the bearing frame body; The reinforcing ribs are arranged at equal intervals along the circumferential direction of the bearing frame body to form a support ring for carrying rolling elements; the outer diameter of the support ring is cut so that a recessed portion recessed in the bearing frame body is provided along the radial direction of the support ring; a guide transition section extending along the circumferential direction of the bearing frame body is formed between the recessed portion and the bearing frame body.

2. A ball bearing cage according to claim 1, characterized in that: The guide transition section has a first arc segment and a second arc segment; the first arc segment is connected to the reinforcing rib on one side along the axial direction of the bearing retainer, and is connected to the second arc segment on the other side along the axial direction of the bearing retainer body.

3. A ball bearing cage according to claim 2, characterized in that: The radial dimension of the first arc segment along the axial direction of the bearing frame body gradually increases from the side close to the reinforcing rib to the side close to the second arc segment.

4. A ball bearing cage according to claim 2, characterized in that: The second arc segment has a cylindrical outer abutment surface in the circumferential direction, and the bottom of the second arc segment along the axial direction of the bearing frame body has a planar connection surface.

5. A ball bearing cage according to claim 1, characterized in that: The bearing frame body has a flow groove that penetrates along the radial direction of the bearing frame body; one side of the flow groove along the axial direction of the bearing frame body has a first opening facing downward; the other side of the flow groove along the axial direction of the bearing frame body does not penetrate the bearing frame body, and forms a top flow surface of the flow groove in the bearing frame body.

6. A ball bearing cage according to claim 5, characterized in that: Both sides of the top flow surface of the flow groove have arc-shaped guide surfaces symmetrically distributed along the circumferential direction of the bearing frame body; along the axial direction of the bearing frame body, the distance between the two arc-shaped guide surfaces gradually increases from the side of the reinforcing rib to the side of the bearing frame body.

7. A ball bearing cage according to claim 1, characterized in that: The reinforcing rib includes a rib claw and a rib body; the rib body is used to connect with the guide transition section, and the rib claw is symmetrically arranged on both sides of the rib body along the circumferential direction of the bearing frame body.

8. A ball bearing cage according to claim 7, characterized in that: A lubrication groove for the circulation of lubricating oil is formed between the inner side walls of the two rib claws on the rib body and the top surface of the rib body. The lubrication groove has a second opening facing upward along the axial direction of the bearing frame body.

9. A ball bearing cage according to claim 7, characterized in that: A pocket hole for carrying a rolling body is formed between two adjacent reinforcing ribs, the rib claws of the two adjacent reinforcing ribs can enclose and lock the rolling body, and the inner wall surface of the pocket hole can extend into the bearing frame body along the axial direction of the bearing frame body.

10. A ball bearing cage according to claim 7, characterized in that: The rib body has an oil guide groove on its inner circumferential surface along the bearing retainer, one end of the oil guide groove along the axial direction of the bearing retainer passes through the top surface of the rib body, and the other end of the oil guide groove along the axial direction of the bearing retainer does not pass through the bottom surface of the rib body, and guide fillets are formed between the inner walls on both sides of the oil guide groove along the circumferential direction of the bearing retainer and the rib body.

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