High-load injection-molded bearing retainer and bearing

Abstract

The utility model discloses a high-load injection-molded bearing retainer, and relates to the technical field of bearings. Comprising a retaining ring; the lintels are arranged at intervals in the circumferential direction of the retaining ring; the support frame is connected between two adjacent lintels, and pockets for accommodating the balls are formed in the support frame; windowsills protruding away from the supporting frame are arranged on the two sides, in the axis direction of the pockets, of the supporting frame; spherical acting surfaces which are connected with the inner arc surfaces of the pockets and are used for bearing balls are arranged in the windowsill; the situation that lubricating oil is thrown to the two sides of the bearing in the radial direction due to the edge of the lubricating oil retainer under the action of centrifugal force during high-speed rotation is avoided, more lubricating oil can be pushed to the surface of the rolling body, lubricating between the rolling body and the retainer is more sufficient, the lubricating effect is enhanced, and the service life of the bearing is prolonged. Heat between the retainer and the rolling body can be fully taken away, and the service life of the bearing is prolonged.

Description

Technical Field

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

[0002] During the operation of the bearing, due to the influence of complex loads and high-speed rotation, the cage in the bearing will be subjected to great centrifugal force, impact force and vibration force, which will cause greater sliding friction between the cage and the rolling element and generate higher heat. In severe cases, it will cause wear between the cage and the rolling element, and even end of life and cannot be used any longer, thus affecting work efficiency. Therefore, how to achieve efficient heat dissipation for the cage has always been a technical issue of concern. In order to increase the heat dissipation effect, lubricating oil is usually used to flow between the cage and the rolling element to generate a lubricating oil film between the cage and the rolling element to reduce friction resistance, reduce wear and can further increase the rotation speed, so as to better meet the needs of complex working conditions.

[0003] However, the existing lubricating oil is easily thrown to both sides of the bearing in the radial direction due to the edge of the retainer, and cannot be pushed to the surface of the rolling element during high-speed operation, resulting in insufficient supply of lubricating oil between the rolling element and the retainer, thereby affecting the use effect and service life of the bearing; and in order to adapt to high-speed rotation, it is also necessary to appropriately reduce the weight of the bearing retainer, but reducing the weight will also affect the structure of the bearing retainer, causing the mechanical strength of the bearing retainer to decrease. How to achieve the mechanical strength of the bearing retainer while reducing the weight of the bearing retainer is a technical problem that needs to be solved. Utility Model Content

[0004] The utility model provides a high-load injection-molded bearing retainer and a bearing, so as to solve the problem that the lubricating oil is easily thrown to both sides of the bearing in the radial direction due to the edge of the retainer, and cannot be pushed to the surface of the rolling body during high-speed operation, resulting in insufficient supply of lubricating oil between the rolling body and the retainer.

[0005] The technical solution adopted by the utility model is:

[0006] A high-load injection-molded bearing cage, comprising:

[0007] Retaining ring;

[0008] A lintel, wherein the lintel is arranged at intervals along the circumferential direction of the retaining ring;

[0009] A support frame, the support frame is connected between two adjacent lintels, the support frame has a pocket for accommodating a ball; the support frame is provided with window sills protruding away from the support frame on both sides along the axial direction of the pocket; the window sill has a spherical action surface connected with the inner arc surface of the pocket to form a ball bearing surface.

[0010] The retaining ring includes a beam and a support frame arranged at intervals, and a support frame for installing a rolling body is connected between two adjacent beams, thereby improving the connection strength of the support frame; window sills protruding from the support frame are arranged on both sides of the support frame along the axial direction of the pocket hole, further improving the support strength of the support frame supporting the rolling body, thereby improving the strength of the entire retaining ring, being more adaptable to complex loads, increasing the protection area of ​​the rolling body, and narrowing the gap between the rolling body and the outer ring and the inner ring, reducing vibration and enhancing the tightness of the connection; and the interior of the window sill has a spherical action surface formed by connecting with the inner arc surface of the pocket hole, which can further increase the support area for the rolling body and further increase the flow area of ​​the lubricating oil between the retaining frame and the rolling body, thereby avoiding that during high-speed rotation, the lubricating oil flows from the beam of the retaining frame to the support frame and is excessively thrown out of the retaining ring under the action of centrifugal force, so that the lubrication between the rolling body and the retaining frame is more sufficient, thereby enhancing the lubrication effect and increasing the service life of the bearing.

[0011] The utility model also has the following additional technical features:

[0012] The lintel is provided with an oil passage groove for the circulation of lubricating oil along the circumferential direction of the retaining ring; the oil passage groove extends toward one side of the lintel along the axial direction of the retaining ring and passes through the lintel; an arc groove is provided in the oil passage groove, and the side of the arc groove extending along the axial direction of the retaining ring has an open end.

[0013] The oil passing groove of the lintel is arranged on the outer side of the lintel along the radial direction of the retaining ring, and / or the oil passing groove of the lintel is arranged on the inner side of the lintel along the radial direction of the retaining ring.

[0014] A groove is provided on the other side of the beam along the axial direction of the retaining ring opposite to the oil groove. The groove passes through the beam along the radial direction of the retaining ring. A claw for locking the ball is formed between the groove and the pocket hole.

[0015] A first guide slope is provided on the side of the claw facing the lintel, and a second guide slope is provided on the side of the claw facing the pocket hole. A guide plane is connected between the first guide slope and the second guide slope of the claw, so that the lubricating oil passes through the second guide slope, the guide plane and the second guide slope and enters the ball in the pocket hole for lubrication.

[0016] The windowsill has guide surfaces on both sides along the circumferential direction of the retaining ring, which face the pocket and protrude and are connected to the circumferential surface of the retaining ring; the windowsill has a first transition surface and a second transition surface connected to the oil groove on both sides along the circumferential direction of the retaining ring, and the first transition surface is combined with the second transition surface and the inner wall of the oil groove to form a lubricating oil diversion area.

[0017] The inner wall of the pocket hole has an oil hole that passes through the support frame and the lintel, and the oil hole forms an oil guide channel for lubricating oil between the lubricating oil guide area and the inner wall of the pocket hole.

[0018] At least one first flow groove is arranged on the inner wall surface of the pocket along the circumferential direction of the pocket, and / or at least one second flow groove is arranged on the inner wall surface of the pocket along the axial direction of the pocket, and the first flow groove and the second flow groove intersect to form a channel for the flow of lubricating oil.

[0019] At least one pair of oil grooves are symmetrically arranged on the inner wall of the pocket along the circumferential direction of the retaining ring, and the oil grooves extend along the axial direction of the pocket.

[0020] The present application also relates to a bearing, comprising the above-mentioned high-load injection-molded bearing retainer, inner ring, outer ring and rolling body; the bearing retainer is arranged between the inner ring and the outer ring, the rolling body is connected to the pocket of the bearing retainer, and the inner ring and the outer ring are rotatably connected through the rolling body.

[0021] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0022] 1. A high-load injection-molded bearing retainer, comprising a retaining ring; a lintel, the lintels being arranged at intervals along the circumferential direction of the retaining ring; a support frame, the support frame being connected between two adjacent lintels, the support frame having pockets for accommodating balls; the support frame having window sills protruding away from the support frame on both sides along the axial direction of the pockets; the window sills having a spherical action surface connected with the inner arc surface of the pockets to form a spherical action surface for carrying balls.

[0023] A support frame for installing rolling elements is connected between two adjacent beams, which improves the connection strength of the support frame; window sills protruding from the support frame are arranged on both sides of the support frame along the axial direction of the pocket hole, which further improves the support strength of the support frame supporting the rolling elements, thereby improving the strength of the entire retaining ring, being more adaptable to complex loads, and being able to reduce the gap between the rolling element and the outer ring and the inner ring, reducing vibration and enhancing the tightness of the connection; the interior of the window sill has a spherical action surface formed by connecting with the inner arc surface of the pocket hole, further increasing the flow area of ​​the lubricating oil between the retaining frame and the rolling element, avoiding the edge of the lubricating oil retaining frame under the action of centrifugal force during high-speed rotation, causing the lubricating oil to be thrown to both sides of the bearing along the radial direction, so that the lubricating oil can be pushed more to the surface of the rolling element, thereby achieving more complete lubrication between the rolling element and the retaining frame, thereby enhancing the lubrication effect, reducing the wear caused by the sliding friction between the rolling element and the retaining frame, and being able to fully take away the heat between the retaining frame and the rolling element, thereby improving the service life of the bearing.

[0024] 2. As a preferred embodiment, the crossbar is provided with an oil groove for the circulation of lubricating oil along the circumferential direction of the retaining ring; the oil groove extends toward one side of the crossbar along the axial direction of the retaining ring and penetrates the crossbar; the oil groove is provided with an arc groove, and the side of the arc groove extending along the axial direction of the retaining ring has an open end. The crossbar is provided with an oil groove on one side of the axial direction of the retaining ring, so that the lubricating oil flows to the circumferential surface of the retaining frame through the oil groove, and an arc groove penetrating the oil groove is provided in the oil groove, and the arc groove forms a circulation path for the lubricating oil between the outer circumferential surface and the inner circumferential surface of the crossbar, so that the lubricating oil can fully flow on the inner circumferential surface and the outer circumferential surface of the retaining ring, and the setting of the arc groove and the oil groove realizes the guiding effect of the lubricating oil, so that the lubricating oil can fully flow between the crossbar and the support frame, so that the lubricating oil enters the interior of the support frame and the rolling elements for full lubrication, and further enhances the overall lubrication effect of the bearing.

[0025] 3. As a preferred embodiment, a groove is provided on the other side of the crossbar along the axial direction of the retaining ring opposite to the oil groove, and the groove penetrates the crossbar along the radial direction of the retaining ring, and a claw for locking the ball is formed between the groove and the pocket. The groove can further reduce the weight of the retaining frame, and the lubricating oil flows in the groove and the oil groove respectively. A part of the lubricating oil enters the inner circumferential surface and the outer circumferential surface of the retaining ring through the groove, and enters the inner wall of the pocket of the support frame, so as to achieve lubrication between the rolling element and the retaining frame, enhance the circulation performance of the lubricating oil, thereby improving the lubrication effect of the rolling element, reducing the wear caused by the sliding friction between the rolling element and the retaining frame, fully taking away the heat caused by the work, and improving the bearing life.

[0026] 4. As a preferred embodiment, the windowsill has guide surfaces on both sides along the circumferential direction of the retaining ring, which face the pocket and protrude from the circumferential surface of the retaining ring; the windowsill has a first transition surface and a second transition surface connected to the oil groove on both sides along the circumferential direction of the retaining ring, and the first transition surface is combined with the second transition surface and the inner wall of the oil groove to form a lubricating oil diversion area. By setting a guide surface on the windowsill along the circumferential direction of the retaining ring, the lubricating oil can smoothly enter the pocket of the support frame from the lintel through the guide surface, thereby increasing the flow path and area of ​​the lubricating oil and enhancing the lubrication effect. In addition, a first transition surface and a second transition surface facing the oil groove are respectively set on the side of the windowsill. The first transition surface and the second transition surface can be connected with the inner wall of the oil groove of the lintel to form a lubricating oil diversion area for the lubricating oil to flow, so as to further increase the flow area of ​​the lubricating oil, so that the lubricating oil can fully flow between the lintel and the support frame, and smoothly enter the pocket of the support frame to fully lubricate the rolling element and the retaining frame. The first transition surface and the second transition surface have a guiding effect on the lubricating oil, so that the lubricating oil can be more smoothly introduced into the pocket, avoiding excessive lubricating oil from being thrown out of the retaining frame, thereby improving the lubrication effect.

[0027] 5. As a preferred embodiment, at least one first flow groove is provided on the inner wall surface of the pocket along the circumference of the pocket, and / or at least one second flow groove is provided on the inner wall surface of the pocket along the axial direction of the pocket, and the first flow groove and the second flow groove intersect to form a channel for the flow of lubricating oil. The purpose of providing at least one first flow groove along the circumference of the pocket and at least one second flow groove along the axial direction of the pocket is to further increase the flow path and flow area of ​​the lubricating oil on the inner wall of the pocket, cover as many positions of the inner wall of the pocket as possible, so that the lubricating oil is more fully filled between the rolling element and the pocket, and ensures sufficient lubrication between the rolling element and the cage; and by providing the first flow groove and the second flow groove, the lubricating oil can have more storage space after entering the support frame from the lintel, and is not easily thrown out to the outside of the cage under the centrifugal force of high-speed rotation, and the lubricating oil can be limited to ensure that the lubricating oil can be locked between the rolling element and the cage, thereby improving the success rate of lubrication and enhancing the lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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:

[0029] Figure 1 A side view of a high-load injection-molded bearing cage according to one embodiment of the utility model;

[0030] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0031] Figure 3 A top view of a high-load injection-molded bearing cage according to an embodiment of the utility model;

[0032] In the figure,

[0033] 1 retaining ring, 2 lintel, 3 support frame, 4 pocket hole, 5 window sill, 6 oil groove, 7 arc groove, 8 groove, 9 pocket claw, 10 first guide inclined surface, 11 second guide inclined surface, 12 guide plane, 13 guide surface, 14 oil groove. DETAILED DESCRIPTION

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] The utility model relates to a high-load injection-molded bearing retainer, such as Figure 1-3 As shown, it includes: a retaining ring 1; a lintel 2, the lintel 2 is arranged at intervals along the circumferential direction of the retaining ring 1; a support frame 3, the support frame 3 is connected between two adjacent lintels 2, and the support frame 3 has a pocket 4 for accommodating a ball; the support frame 3 is provided with a window sill 5 protruding away from the support frame 3 on both sides along the axial direction of the pocket 4; the window sill 5 has a spherical action surface connected with the inner arc surface of the pocket 4 to form a ball bearing surface.

[0040] like Figure 1 As shown, the retaining ring 1 includes a beam 2 and a support frame 3 arranged at intervals, and a support frame 3 for mounting a rolling body is connected between two adjacent beams 2, thereby improving the connection strength of the support frame 3; window sills 5 protruding from the support frame 3 are arranged on both sides of the support frame 3 along the axial direction of the pocket hole 4, further improving the support strength of the support frame 3 supporting the rolling body, thereby improving the strength of the entire retaining ring 1, being more adaptable to complex loads, increasing the protection area of ​​the rolling body, and also being able to reduce the gap between the rolling body and the outer ring and the inner ring, thereby reducing vibration and enhancing the tightness of the connection; and the inner side of the window sill 5 The part has a spherical action surface connected with the inner arc surface of the pocket 4, which can further increase the support area for the rolling body, and further increase the flow area of ​​the lubricating oil between the cage and the rolling body, so as to avoid the lubricating oil from flowing from the crossbeam 2 of the cage to the support frame 3 during high-speed rotation and being thrown out of the retaining ring 1 too much under the action of centrifugal force, so that the lubrication between the rolling body and the cage is more sufficient, thereby enhancing the lubrication effect, reducing the wear caused by the sliding friction between the rolling body and the cage, and being able to fully take away the heat between the cage and the rolling body, thereby increasing the service life of the bearing.

[0041] As a preferred embodiment, Figure 1 and Figure 2 As shown, the lintel 2 is provided with an oil groove 6 for the circulation of lubricating oil along the circumferential direction of the retaining ring 1; the oil groove 6 extends toward one side of the lintel 2 along the axial direction of the retaining ring 1 and penetrates the lintel 2; an arc groove 7 is provided in the oil groove 6, and the side of the arc groove 7 extending along the axial direction of the retaining ring 1 has an open end.

[0042] An oil groove 6 is provided on one side of the beam 2 along the axial direction of the retaining ring 1, so that the lubricating oil can flow to the circumferential surface of the retaining frame through the oil groove 6, and a circular arc groove 7 is provided in the oil groove 6 to penetrate the oil groove 6. The circular arc groove 7 forms a flow path for the lubricating oil from the outer circumferential surface and the inner circumferential surface of the beam 2, so that the lubricating oil can fully flow on the inner circumferential surface and the outer circumferential surface of the retaining ring 1, and the circular arc groove 7 and the oil groove 6 are provided to guide the lubricating oil, so that the lubricating oil can fully flow between the beam 2 and the support frame 3, so that the lubricating oil enters the interior of the support frame 3 and the rolling elements for full lubrication, thereby further enhancing the overall lubrication effect of the bearing.

[0043] As a preferred embodiment, the oil groove 6 of the lintel 2 is arranged on the outer side of the lintel 2 along the radial direction of the retaining ring 1, and / or the oil groove 6 of the lintel 2 is arranged on the inner side of the lintel 2 along the radial direction of the retaining ring 1.

[0044] In this embodiment, the oil passage groove 6 may be provided in the following three embodiments, but the oil passage groove 6 is not limited to the description scope of this application:

[0045] Embodiment 1: The oil groove 6 of the beam 2 is arranged on the outer side of the beam 2 along the radial direction of the retaining ring 1, and the oil groove 6 of the beam 2 is arranged on the inner side of the beam 2 along the radial direction of the retaining ring 1. The oil grooves 6 are arranged on the inner and outer sides of the retaining ring 1 in the radial direction. Under the premise of ensuring the structural strength of the cage, as many lubricating oils as possible can be arranged to fully enter between the cage and the rolling elements through more oil grooves 6 to achieve efficient lubrication. In addition, the oil grooves 6 evenly distributed on the inner and outer sides can achieve uniform weight reduction on the inner and outer sides of the cage, further improving the rotation speed of the cage.

[0046] Embodiment 2: The oil groove 6 of the lintel 2 is arranged on the outer side of the lintel 2 along the radial direction of the retaining ring 1. The oil groove 6 is arranged on the outer side of the retaining ring 1 along the radial direction, which can further increase the flow area from the outer side of the lintel 2 into the inner wall of the pocket 4 of the support frame 3, and can achieve the overall weight reduction of the retaining frame.

[0047] Embodiment 3: The oil passage groove 6 of the lintel 2 is arranged on the inner side of the lintel 2 along the radial direction of the retaining ring 1. The oil passage groove 6 is arranged on the inner side of the retaining ring 1 along the radial direction, which can further increase the flow area from the inner side of the lintel 2 into the inner wall of the pocket 4 of the support frame 3, and can achieve the overall weight reduction of the retaining frame.

[0048] As a preferred embodiment, a groove 8 is provided on the other side of the beam 2 along the axial direction of the retaining ring 1 opposite to the oil groove 6, and the groove 8 passes through the beam 2 along the radial direction of the retaining ring 1, and a claw 9 for locking the ball is formed between the groove 8 and the pocket 4.

[0049] The groove 8 can further reduce the weight of the cage. The lubricating oil flows in the groove 8 and the oil groove 6 respectively. A part of the lubricating oil enters the inner circumferential surface and the outer circumferential surface of the retaining ring 1 through the groove 8, and enters the inner wall of the pocket 4 of the support frame 3, so as to realize the lubrication between the rolling element and the cage, enhance the circulation performance of the lubricating oil, thereby improving the lubrication effect of the rolling element, reducing the wear caused by the sliding friction between the rolling element and the cage, fully taking away the heat brought by the work, and improving the bearing life.

[0050] As a preferred embodiment, Figure 2 As shown, a first guiding bevel 10 is provided on the side of the claw 9 facing the lintel 2, and a second guiding bevel 11 is provided on the side of the claw 9 facing the pocket 4. A guiding plane 12 is connected between the first guiding bevel 10 and the second guiding bevel 11 of the claw 9, so that the lubricating oil passes through the second guiding bevel 11, the guiding plane 12 and the second guiding bevel 11 into the ball in the pocket 4 for lubrication.

[0051] The function of the first guide bevel 10, the second guide bevel 11 and the guide plane 12 is to enable the lubricating liquid to smoothly flow along the first guide bevel 10 and the second guide bevel 11 having a certain slope from one side of the groove 8 of the lintel 2 into the inner wall of the pocket 4 of the support frame 3, thereby flowing between the inner wall of the pocket 4 and the rolling element, thereby achieving sufficient lubrication between the rolling element and the retaining frame.

[0052] As a preferred embodiment, Figures 1 to 3 As shown, the windowsill 5 has guide surfaces 13 on both sides along the circumferential direction of the retaining ring 1, which face the pocket 4 and protrude and are connected to the circumferential surface of the retaining ring 1; the windowsill 5 has a first transition surface and a second transition surface connected to the oil groove 6 on both sides along the circumferential direction of the retaining ring 1, and the first transition surface is combined with the second transition surface and the inner wall of the oil groove 6 to form a lubricating oil diversion area.

[0053] It is worth noting that the first transition surface is connected to the inner wall of the oil groove 14, the second transition surface is connected to the first transition surface, and the inclination angle of the first transition surface is smaller than the inclination angle of the second transition surface, so that the lubricating oil on the second transition surface can further increase the flow speed and enter the inner wall of the pocket 4 of the support frame 3 faster.

[0054] By setting a guide surface 13 on the window sill 5 along the circumferential direction of the retaining ring 1, the lubricating oil can smoothly enter the pocket 4 of the support frame 3 from the lintel 2 through the guide surface 13, thereby increasing the flow path and area of ​​the lubricating oil and enhancing the lubrication effect. In addition, a first transition surface and a second transition surface facing the oil groove 6 are respectively set on the side of the window sill 5. The first transition surface and the second transition surface can be connected with the inner wall of the oil groove 6 of the lintel 2 to form a lubricating oil diversion area for the lubricating oil to flow, so as to further increase the flow area of ​​the lubricating oil, so that the lubricating oil can fully flow between the lintel 2 and the support frame 3, and smoothly enter the pocket 4 of the support frame 3 to fully lubricate the rolling element and the retaining frame. The first transition surface and the second transition surface have a guiding effect on the lubricating oil, so that the lubricating oil can be more smoothly introduced into the pocket 4, avoiding excessive lubricating oil from being thrown out of the retaining frame, thereby improving the lubrication effect.

[0055] As a preferred embodiment, the inner wall of the pocket 4 has an oil hole that passes through the support frame 3 and the lintel 2, and the oil hole forms an oil guide channel for the lubricating oil between the lubricating oil guide area and the inner wall of the pocket 4.

[0056] The oil hole can be located on one side of the pocket 4 along the circumferential direction of the retaining frame, or on both sides along the circumferential direction of the retaining frame. The purpose of the oil hole is to increase the direct path from the lintel 2 to the inner wall of the pocket 4. The lubricating oil can flow directly from the lintel 2 through the oil hole into the inner wall of the pocket 4, and then flow through the first flow groove and the second flow groove described below, so as to achieve all-round filling of the inner wall of the pocket 4 and ensure sufficient lubrication between the rolling elements and the retaining frame.

[0057] As a preferred embodiment, at least one first flow groove is arranged on the inner wall surface of the pocket hole 4 along the circumferential direction of the pocket hole 4, and / or at least one second flow groove is arranged on the inner wall surface of the pocket hole 4 along the axial direction of the pocket hole 4, and the first flow groove and the second flow groove intersect to form a channel for the flow of lubricating oil.

[0058] The purpose of setting at least one first flow groove along the circumference of the pocket 4 and at least one second flow groove along the axial direction of the pocket 4 is to further increase the flow path and flow area of ​​the lubricating oil on the inner wall of the pocket 4, cover as many positions of the inner wall of the pocket 4 as possible, so that the lubricating oil is more fully filled between the rolling element and the pocket 4, and ensure sufficient lubrication between the rolling element and the retaining frame; moreover, by setting the first flow groove and the second flow groove, the lubricating oil can have more storage space after entering the support frame 3 from the lintel 2, and is not easily thrown out to the outside of the retaining frame under the centrifugal force of high-speed rotation. The lubricating oil can be limited to ensure that the lubricating oil can be locked between the rolling element and the retaining frame, thereby improving the success rate of lubrication and enhancing the lubrication effect.

[0059] As a preferred embodiment, at least one pair of oil grooves 14 are symmetrically provided on the inner wall of the pocket 4 along the circumference of the retaining ring 1 , and the oil grooves 14 extend along the axial direction of the pocket 4 .

[0060] In this embodiment, there is no specific limitation on the structure of the oil tank 14, and any of the following embodiments may be adopted:

[0061] Embodiment 1: The oil groove 14 is a through groove. The cross-section of the oil groove 14 is in a rectangular structure. The length direction of the oil groove 14 is arranged along the axial direction of the inner wall of the pocket 4 and penetrates the inner wall surface of the pocket 4. The lubricating liquid flowing through the lintel 2 can directly enter the inner wall of the pocket 4 from the groove 8 through the outer circumferential surface and the inner circumferential surface of the retaining ring 1, and flow through the gap between the rolling element and the retaining frame through the oil groove 6 to achieve sufficient lubrication of the rolling element, which can better meet the needs of high-speed rotation.

[0062] Embodiment 2: The oil groove 14 adopts a first transition groove and a second transition groove which are symmetrically arranged along the axial direction of the pocket hole 4, wherein the first transition groove is close to the outer circumferential surface of the retaining ring 1, and the second transition groove is close to the inner circumferential surface of the retaining ring 1. The size of the first transition groove along the circumferential direction of the retaining ring 1 gradually decreases from one side of the outer circumferential surface of the retaining ring 1 to one side of the inner circumferential surface of the retaining ring 1, and the size of the first transition groove of the second transition groove along the circumferential direction of the retaining ring 1 gradually increases from one side of the outer circumferential surface of the retaining ring 1 to one side of the inner circumferential surface of the retaining ring 1. The lubricating oil enters the inner wall of the pocket hole 4 from the first transition groove and the second transition groove respectively, and the flow area gradually increases from the outside to the inside. The externally expanded area can first allow more lubricating oil to enter the first transition groove and the second transition groove, and the internally reduced area can increase the pressure of the lubricating oil entering the first transition groove and the second transition groove to press into the inner wall of the pocket hole 4, so that more lubricating oil is injected into the inner wall of the pocket hole 4 and reaches more areas, thereby achieving sufficient lubrication of the rolling elements and the retaining frame.

[0063] The present application also relates to a bearing, comprising the above-mentioned high-load injection-molded bearing retainer, inner ring, outer ring and rolling body; the bearing retainer is arranged between the inner ring and the outer ring, the rolling body is connected to the pocket of the bearing retainer, and the inner ring and the outer ring are rotatably connected through the rolling body.

[0064] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0065] 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.

[0066] 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 high load injection molded bearing cage, characterized in that: include: Retaining ring; A lintel, wherein the lintel is arranged at intervals along the circumferential direction of the retaining ring; A support frame, the support frame is connected between two adjacent lintels, the support frame has a pocket for accommodating a ball; the support frame is provided with window sills protruding away from the support frame on both sides along the axial direction of the pocket; the window sill has a spherical action surface connected with the inner arc surface of the pocket to form a ball bearing surface.

2. A high load injection molded bearing cage according to claim 1, characterized in that: The lintel is provided with an oil passage groove for the circulation of lubricating oil along the circumferential direction of the retaining ring; the oil passage groove extends toward one side of the lintel along the axial direction of the retaining ring and passes through the lintel; an arc groove is provided in the oil passage groove, and the side of the arc groove extending along the axial direction of the retaining ring has an open end.

3. A high load injection molded bearing cage according to claim 2, characterized in that: The oil passing groove of the lintel is arranged on the outer side of the lintel along the radial direction of the retaining ring, and / or the oil passing groove of the lintel is arranged on the inner side of the lintel along the radial direction of the retaining ring.

4. A high load injection molded bearing cage according to claim 2, characterized in that: A groove is provided on the other side of the beam along the axial direction of the retaining ring opposite to the oil groove. The groove passes through the beam along the radial direction of the retaining ring. A claw for locking the ball is formed between the groove and the pocket hole.

5. A high load injection molded bearing cage according to claim 4, characterized in that: A first guide slope is provided on the side of the claw facing the lintel, and a second guide slope is provided on the side of the claw facing the pocket hole. A guide plane is connected between the first guide slope and the second guide slope of the claw, so that the lubricating oil passes through the second guide slope, the guide plane and the second guide slope and enters the ball in the pocket hole for lubrication.

6. A high load injection molded bearing cage according to claim 2, characterized in that: The windowsill has guide surfaces on both sides along the circumferential direction of the retaining ring, which face the pocket and protrude and are connected to the circumferential surface of the retaining ring; the windowsill has a first transition surface and a second transition surface connected to the oil groove on both sides along the circumferential direction of the retaining ring, and the first transition surface is combined with the second transition surface and the inner wall of the oil groove to form a lubricating oil diversion area.

7. A high load injection molded bearing cage according to claim 6, characterized in that: The inner wall of the pocket hole has an oil hole that passes through the support frame and the crossbeam, and the oil hole forms an oil guide channel for lubricating oil between the lubricating oil guide area and the inner wall of the pocket hole.

8. A high load injection molded bearing cage according to claim 1, characterized in that: At least one first flow groove is arranged on the inner wall surface of the pocket along the circumferential direction of the pocket, and / or at least one second flow groove is arranged on the inner wall surface of the pocket along the axial direction of the pocket, and the first flow groove and the second flow groove intersect to form a channel for the flow of lubricating oil.

9. A high load injection molded bearing cage according to claim 1, characterized in that: At least one pair of oil grooves are symmetrically arranged on the inner wall of the pocket along the circumferential direction of the retaining ring, and the oil grooves extend along the axial direction of the pocket.

10. A bearing, characterized in that: It comprises a high-load injection molded bearing retainer, an inner ring, an outer ring and a rolling body as described in any one of claims 1 to 9; the bearing retainer is arranged between the inner ring and the outer ring, the rolling body is connected to the pocket of the bearing retainer, and the inner ring and the outer ring are rotatably connected through the rolling body.

Images