CN219733973U - Ball bearing holder of moulding plastics - Google Patents

Abstract

The utility model relates to the field of bearing retainers, and discloses a ball injection molding bearing retainer, which comprises an annular end ring and an annular supporting frame, wherein: including annular end ring and annular support frame, wherein: the end rings are connected with two ends of the support frame, and the side wall of the support frame is provided with a plurality of pockets along the circumferential direction, and the pockets are used for accommodating the ball-type rolling bodies; the end of the support frame is provided with an inner concave part between two adjacent pockets, and the inner concave part and the end face of the end ring enclose a window hole. The ball injection molding bearing retainer provided by the utility model reduces the weight of the rolling ball bearing and has high lubricating performance.

Description

Ball bearing holder of moulding plastics

Technical Field

The utility model relates to the field of bearing retainers, in particular to a ball injection molding bearing retainer.

Background

The rolling ball bearing is one kind of rolling bearing, and the ball bearing is installed between the inner steel ring and the outer steel ring and can bear great load, also called ball bearing.

Rolling ball bearings are generally used in applications with high rotational speeds, and therefore require high lubrication performance and light weight, however, current rolling bearings generally cannot achieve both lubrication performance and light weight.

Therefore, there is an urgent need for a rolling ball bearing having high lubrication performance and light weight.

Disclosure of Invention

In order to solve one or more technical problems in the prior art, or at least to provide an advantageous option, the present utility model provides a ball injection molded bearing cage that reduces the weight of a rolling ball bearing and combines high lubrication properties.

The utility model discloses a ball injection molding bearing retainer, which comprises an annular end ring and an annular supporting frame, wherein the annular end ring comprises a ring-shaped end ring body, a ring-shaped end ring body and a ring-shaped end ring body, wherein the ring-shaped end ring body is arranged on the ring-shaped end ring body, and the ring-shaped end ring body is arranged on the ring-shaped end ring body: the end rings are connected with two ends of the support frame, and the side wall of the support frame is provided with a plurality of pockets along the circumferential direction, and the pockets are used for accommodating the ball-type rolling bodies; the end of the support frame is provided with an inner concave part between two adjacent pockets, and the inner concave part and the end face of the end ring enclose a window hole.

In a preferred implementation mode of the ball injection bearing retainer, a first protruding portion protruding outwards is arranged on the outer side face of the end ring, and an arc-shaped oil guide portion is arranged at the joint of the first protruding portion and the outer side face of the support frame.

In a preferred embodiment of the ball-molded bearing cage, the first projections are located and correspond in number to the pockets, and a first oil passage groove is formed between two adjacent first projections.

In a preferred implementation mode of the ball injection bearing retainer, the inner side surface of the support frame is provided with a second protruding part protruding inwards, the second protruding part is located between two adjacent pockets, the second protruding part is provided with an inclined oil guide part extending obliquely towards two ends of the support frame, the inclined oil guide part extends to the window hole, and the extending endpoint of the inclined oil guide part is lower than the vertex of the pocket.

In a preferred embodiment of the ball injection bearing cage, the outer lateral surface of the support frame is provided with an outwardly protruding elastic stop, which is located between the two pockets.

In a preferred embodiment of the ball-molded bearing cage, the elastic stop is provided with a second oil groove extending in the axial direction.

In a preferred embodiment of the ball-molded bearing cage, the projections of the second oil groove and the first oil groove in the axial direction coincide with one another.

In a preferred implementation mode of the ball injection bearing retainer, the inner wall of the pocket is provided with a spherical joint surface jointed with the ball rolling bodies and a cylindrical curved surface with the radial size larger than or equal to that of the ball rolling bodies, the axial direction of the cylindrical curved surface corresponds to the radial direction of the supporting frame, and the spherical joint surface and the cylindrical curved surface are distributed along the radial direction of the supporting frame and are mutually connected.

In a preferred implementation of the ball injection bearing cage, the spherical abutment surface and the cylindrical curved surface are arranged from inside to outside in the radial direction.

In a preferred implementation of the ball-molded bearing retainer, the aperture is an arched aperture, the larger end of the arched aperture being disposed toward the end ring.

The utility model has the beneficial effects that:

(1) The end ring is mutually matched with the support frame, on one hand, the support frame is positioned in the middle of the end ring and plays a supporting role on the end ring through connection with the end ring, the end ring is prevented from deforming, on the other hand, the end ring is connected with two ends of the support frame, limiting is formed on the support frame, deformation such as torsion and the like of the support frame due to high-speed rotation of the rolling bodies is prevented, and the using effect is influenced. The support frame is equipped with a plurality of pocket hole, therefore has a plurality of department concave parts, and the setting of concave part reduces the whole volume of support frame to play the effect of lightening holder weight, in addition, the formation of window makes weight reduction keep holistic stability, and the terminal surface of end ring plays the supporting role to the pocket hole that forms concave part, and the existence of window has increased the circulation route of lubricating oil and lubricating grease moreover, has improved the connectivity of lubricating oil when lightening holder weight promptly.

(2) The first bulge makes and plays more stable fixed and guard action between end ring and the support frame, and the quantity of first bulge and pocket hole equals to correspond with the position of pocket hole, the arc oil guide position is located the lateral surface of support frame, and be located the top and the bottom department of support frame, form the arc curved surface to extend along the top and the bottom of first pocket hole to the outside, extend to meet with first bulge, first bulge has the effect of accepting to the arc oil guide, both combined action improves the connectivity of lubricating oil or lubricating grease in pocket hole department, indent naturally forms first oil groove of crossing between the adjacent first bulge, make full use of space improves the connectivity of lubricating oil when reducing the volume.

(3) The formation of the second bulge part also enhances the oil guiding effect, the second bulge part continues to extend inwards from the inner side edge of the pocket and is smoothly connected with the pocket, so that the circulation effect of lubricating oil at the pocket is better, and the second bulge part has a certain stabilizing effect on the whole support frame, especially the pocket, so that the problem that the pocket wall surface is not stable due to impact when the rolling body rolls in the pocket due to light whole weight can be avoided; the setting of slope oil guide portion then make full use of second bulge, extend smoothly at the second bulge, and do not surpass pocket hole summit department, if extend the overlength, form setting between pocket hole and the slope oil guide portion needs further design cooperation, has improved the processing degree of difficulty, and is unfavorable for the stable loading of rolling element in the pocket hole inside.

And the retainer can be provided with the second protruding part and the first protruding part at the same time, so that the integral balance of the retainer is compensated in the aspect of position setting, the balance effect of the integral structure of the retainer is better, and the retainer is suitable for high-speed rotation of rolling bodies.

(4) The elastic stop block protrudes from the edge of the pocket, plays a limiting effect on the rolling body located on the inner side of the pocket, and when the rolling body moves, the elastic stop block is retracted into the pocket by virtue of elasticity, so that the displacement of the rolling body is limited, the rolling body is prevented from falling off the pocket, the elastic piece does not damage the surface of the rolling body, the rolling body is not influenced to roll in the pocket for a long time, and the rolling body is conveniently clamped into the pocket during assembly. And the setting of make full use of elasticity dog forms the second and crosses the oil groove, further improves the oil guide effect, strengthens the circulation of lubricating oil or lubricating grease, and the second crosses the oil groove and cross the projection coincidence of oil groove with first, and the second crosses the oil groove and cross the coaxial setting of oil groove with first promptly, and is more convenient in the course of working, when setting up a plurality of oil guide passageway in order to strengthen the lubricating oil circulation, need not to measure the counterpoint many times, reduces the processing degree of difficulty.

(5) The inner wall of the pocket hole is provided with a spherical joint surface and a cylindrical curved surface to be combined, so that the contact area between the inner part of the pocket hole and the rolling body is reduced when the loading of the rolling body is ensured, the rolling body has play in the radial direction, the radial impact load can be buffered, and the cylindrical curved surface is arranged on the outer side due to the small contact area between the cylindrical curved surface and the rolling body, and the elastic stop block matched with the outer side realizes the limit effect on the rolling body while reducing friction.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a perspective view of a cage according to an embodiment of the present utility model.

Fig. 2 is a top view of a holder according to an embodiment of the utility model.

Fig. 3 is a cross-sectional view of a cage according to an embodiment of the present utility model.

Reference numerals illustrate:

1-a retainer;

11-end rings, 12-support frames;

111-a first bulge, 112-an arc-shaped oil guide part, 113-a first oil passing groove;

121-pocket, 122-concave, 123-window, 124-second protrusion, 125-inclined oil guide, 126-elastic stopper, 127-second oil passing groove, 128-spherical abutment surface, 129-cylindrical curved surface.

Detailed Description

In order to more clearly illustrate the general inventive concept, reference will be made in the following detailed description, by way of example, to the accompanying drawings.

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than as described herein, and therefore the scope of the present utility model is not limited by the specific embodiments disclosed below.

In addition, in the description of the present utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. However, it is noted that direct connection indicates that two connected bodies are not connected through a transition structure, but are connected through a connection structure to form a whole. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The scheme adopted is as follows: a ball injection molded bearing cage, as shown in fig. 1-3, comprising an annular end ring 11 and an annular support frame 12, wherein: the end ring 11 is connected with two ends of the support frame 12, a plurality of pockets 121 are formed in the side wall of the support frame 12 along the circumferential direction, and the pockets 121 are used for accommodating ball-type rolling bodies; an inner concave part 122 is arranged between two adjacent pockets 121 at the end part of the support frame 12, and the inner concave part 122 and the end surface of the end ring 11 enclose a window hole 123.

The end ring 11 and the support frame 12 mutually cooperate, and on the one hand, the support frame 12 is located in the middle of the end ring 11 and plays a supporting role on the end ring 11 through being connected with the end ring 11, prevents the end ring 11 from deforming, and on the other hand, the end ring 11 is connected with two ends of the support frame 12, forms spacing to the support frame 12, prevents deformation such as distortion of the support frame 12 due to high-speed rotation of rolling bodies, and influences the use effect. The support frame 12 is provided with a plurality of pockets 121, so that a plurality of concave portions 122 exist, the arrangement of the concave portions 122 reduces the overall volume of the support frame 12, thereby achieving the effect of reducing the weight of the retainer 1, in addition, the formation of the window holes 123 enables the weight to be reduced while maintaining the overall stability, the end face of the end ring 11 plays a supporting role on the pockets 121 forming the concave portions 122, and the existence of the window holes 123 increases the flow paths of lubricating oil and lubricating grease, namely, the flow-through property of the lubricating oil is improved while the weight of the retainer 1 is reduced.

Further, the window hole 123 is provided in an arch shape, ensuring structural strength, so that structural instability due to volume reduction is not caused. The larger end of the arched window 123, i.e. the longer of the two parallel ends, is arranged towards the end ring 11, i.e. the end ring 11 closes off the longest side of the window 123, in a manner which is more effective for the stability of the cage 1 as a whole than the other sides.

In one embodiment, as shown in fig. 1-2, the outer side surface of the end ring 11 is provided with first protruding parts 111 protruding outwards, the first protruding parts 111 enable the end ring 11 and the support frame 12 to achieve a more stable fixing and protecting effect, the number of the first protruding parts 111 is equal to that of the pockets 121, the connecting parts of the first protruding parts 111 and the outer side surface of the support frame 12 are provided with arc oil guiding parts 112 corresponding to the positions of the pockets 121, the arc oil guiding parts 112 are located on the outer side surface of the support frame 12 and are located at the top end and the bottom end of the support frame 12, arc curved surfaces are formed outwards along the top and the bottom of the first pockets 121 and extend to be connected with the first protruding parts 111, the first protruding parts 111 have a bearing effect on the arc oil guiding parts 112, the two function together to improve the flowing property of lubricating oil or lubricating grease at the positions of the pockets 121, a first oil through groove 113 is naturally formed by concave inwards between the adjacent protruding parts, and the space is fully utilized to improve the flowing property of the lubricating oil while reducing the volume.

Further, the first protruding portion 111 and the end ring 11 may be integrally formed during the processing of the cage 1, so as to reduce the processing procedure, prevent unstable connection caused by continuous rolling of the rolling element for a long time, and make the connection smoother, thereby being more beneficial to the oil guiding effect.

In one embodiment, as shown in fig. 1-2, the inner side surface of the support frame 12 is provided with a second protruding part 124 protruding inwards, the second protruding part 124 is located between two adjacent pockets 121, the formation of the second protruding part 124 also enhances the oil guiding effect, the second protruding part 124 continues to extend inwards from the inner side edge of the pockets 121 and is smoothly connected with the pockets 121, so that the circulation effect of lubricating oil at the pockets 121 is better, and the second protruding part 124 has a certain stabilizing effect on the whole support frame 12, especially the pockets 121, so that the unstable impact on the wall surface of the pockets 121 when rolling bodies roll in the pockets 121 due to light whole weight can be avoided; the second bulge 124 wants support frame 12 both ends slope to extend and forms slope oil guide portion 125, slope oil guide portion 125 extends to aperture 123 department along second bulge 124, and extend the extreme point and be less than the summit of pocket 121, the setting of slope oil guide portion 125 then make full use of second bulge 124, extend smoothly at second bulge 124, and do not surpass pocket 121 summit department, if extend overlength, the form setting between pocket 121 and the slope oil guide portion 125 needs further design cooperation, the processing degree of difficulty has been improved, and be unfavorable for the stable loading of rolling element in pocket 121 inside.

And the retainer 1 can be provided with the second protruding part 124 and the first protruding part 111 at the same time, so that the overall balance of the retainer 1 is compensated in terms of position setting, the balance effect of the overall structure of the retainer 1 is better, and the retainer is suitable for high-speed rotation of rolling bodies.

In one embodiment, as shown in fig. 1-2, an elastic stop block 126 protruding outwards is arranged on the outer side surface of the supporting frame 12, the elastic stop block 126 is located between the adjacent pockets 121, the elastic stop block 126 protrudes from the edge of the pockets 121 and plays a limiting role on the rolling bodies located on the inner sides of the pockets 121, when the rolling bodies move, the rolling bodies are retracted into the pockets 121 by elastic force, displacement of the rolling bodies is limited, the rolling bodies are prevented from falling off the pockets 121, the surface of the rolling bodies is not damaged by the elastic members, long-time rolling operation of the rolling bodies in the pockets 121 is not affected, and when the rolling bodies are assembled, the rolling bodies are conveniently clamped into the pockets 121. The elastic stop block 126 is separated along the center of the axial direction, and the concave curved surface appears, so that on one hand, the volume of the elastic stop block 126 is reduced while the limiting effect is achieved by the elastic stop block 126, on the other hand, the second oil passing groove 127 is formed by fully utilizing the arrangement of the elastic stop block 126, the oil guiding effect is further improved, the flow of lubricating oil or lubricating grease is enhanced, the second oil passing groove 127 is overlapped with the first oil passing groove 113 in a projection manner, namely, the second oil passing groove 127 and the first oil passing groove 113 are coaxially arranged, the processing process is more convenient, a plurality of oil guiding channels are arranged to enhance the flow of the lubricating oil, the alignment is not required to be measured for a plurality of times, and the processing difficulty is reduced.

In one embodiment, as shown in fig. 3, the inner wall of the pocket 121 has two forms at the same time, namely, a spherical joint surface 128 jointed with the ball-shaped rolling bodies, so as to ensure the limit function of the ball-shaped rolling bodies; secondly, the radial dimension is larger than or equal to the cylindrical curved surface 129 of the ball-shaped rolling body, and the axial direction of the cylindrical curved surface 129 corresponds to the radial direction of the support frame 12; the pocket 121 inner wall sets up spherical fitting surface 128 and cylindricality curved surface 129 and combines, when guaranteeing to adapt to rolling body shape and load, reduces the inside of pocket 121 and the area of contact of rolling body, and makes the rolling body have the play in radial direction, can cushion radial impact load, spherical fitting surface 128 and cylindricality curved surface 129 arrange along the radial direction of support frame 12 and both interconnect, and spherical fitting surface 128 and cylindricality curved surface 129's junction is the smooth arcwall face that is in same height, avoids causing the surface fish tail to the rolling body that is located in pocket 121.

In addition, the spherical joint surface 128 and the cylindrical curved surface 129 are arranged from inside to outside along the radial direction, the cross section of the cylindrical curved surface 129 is linear, the cross section of the spherical joint surface 128 is curved, and the cylindrical curved surface 129 and the rolling body have small contact area, so that the cylindrical curved surface 129 is arranged on the outer side, and the limit effect on the rolling body is realized when friction is reduced by matching with the elastic stop block 126 on the outer side.

The technical solution protected by the present utility model is not limited to the above embodiments, and it should be noted that, the combination of the technical solution of any one embodiment with the technical solution of the other embodiment or embodiments is within the scope of the present utility model. While the utility model has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.

Claims (10)

1. The utility model provides a ball bearing holder of moulding plastics which characterized in that includes annular end ring and annular support frame, wherein:

the end rings are connected with two ends of the support frame, a plurality of pockets are formed in the side wall of the support frame along the circumferential direction, and the pockets are used for accommodating ball-type rolling bodies; the end part of the support frame is provided with an inner concave part between two adjacent pockets, and the inner concave part and the end surface of the end ring enclose a window hole.

2. The ball injection molded bearing retainer according to claim 1, wherein the outer side surface of the end ring is provided with a first protruding portion protruding outwards, and an arc-shaped oil guiding portion is arranged at the joint of the first protruding portion and the outer side surface of the supporting frame.

3. The ball injection molded bearing retainer of claim 2, wherein the first protrusions are positioned and number corresponding to the pockets, and a first oil passage groove is formed between two adjacent first protrusions.

4. The ball injection bearing retainer according to claim 1, wherein the inner side surface of the support frame is provided with a second protruding portion protruding inwards, the second protruding portion is located between two adjacent pockets, the second protruding portion is provided with an inclined oil guide portion extending obliquely towards two ends of the support frame, the inclined oil guide portion extends to the window hole, and an extension end point of the inclined oil guide portion is lower than an apex of each pocket.

5. A ball injection molded bearing retainer according to claim 3, wherein the outer side of the support frame is provided with an outwardly protruding resilient stop located between two of the pockets.

6. The ball molded bearing retainer of claim 5 wherein said elastomeric stop is provided with a second oil passage extending in an axial direction.

7. The ball molded bearing retainer of claim 6, wherein said second oil passage is coincident with said first oil passage in projection in the axial direction.

8. The ball injection bearing retainer according to claim 1, wherein the inner wall of the pocket is provided with a spherical fitting surface fitting with the ball-shaped rolling bodies and a cylindrical curved surface with a radial dimension larger than or equal to that of the ball-shaped rolling bodies, the axial direction of the cylindrical curved surface corresponds to the radial direction of the supporting frame, and the spherical fitting surface and the cylindrical curved surface are distributed along the radial direction of the supporting frame and are connected with each other.

9. The ball injection molded bearing retainer of claim 8, wherein said spherical abutment surface and said cylindrical curved surface are radially disposed from inside to outside.

10. The ball molded bearing retainer of claim 1, wherein said aperture is an arcuate aperture, a larger end of said arcuate aperture being disposed toward said end ring.