CN212615933U - Ball retainer - Google Patents

Abstract

The disclosed embodiment relates to a ball retainer, including: the ball bearing mounting structure comprises a body and a plurality of spacing pieces, wherein the body is provided with a plurality of ball bearing mounting holes for arranging balls at equal intervals; the spacer is arranged between every two adjacent balls and comprises a first spacing part and a second spacing part, the first spacing part and the second spacing part are arranged on two surfaces of the body, and the distances from the top surface of the body to the body of the first spacing part and the second spacing part are different. In the embodiment, the asymmetrical spacer is arranged relative to the body, so that on one hand, the contact area of the spacer and the ball is reduced, the contact area of the ball and the guide rail is increased, and the running stability of the guide rail is ensured; on the other hand, due to the asymmetric design of the spacing piece, the spacing piece can be matched with guide rails of more models, and the application range is wide.

Description

Ball retainer

Technical Field

The embodiment of the disclosure relates to the technical field of retainers, in particular to a ball retainer.

Background

At present, a roller linear guide rail pair generally comprises a guide rail, a slide block, a ball, a gyrator, a retainer and the like. The working principle is that the rolling bodies roll in a track formed by the guide rail and the sliding block to realize the movement of the sliding block relative to the guide rail. The retainer is a part which partially wraps all or part of the rolling bodies and moves along with the rolling bodies and is used for isolating the rolling bodies from the rolling bodies, so that a certain distance is kept between every two adjacent rolling bodies, and the two rolling bodies are prevented from being contacted with each other. The cage also typically guides and retains the rolling elements within the guide rail.

The prior art retainers are typically made from metal wire by stamping or by plastic injection molding. However, the disadvantages of these two holders are as follows:

(1) the long metal retainer is easy to bend, and the rolling body can be blocked after the metal retainer is bent, so that the use of the guide rail is seriously influenced.

(2) The metal retainer cannot effectively block the balls, abrasion is generated between the metal retainer and the metal guide rail, the precision of the guide rail is affected, and noise is generated.

(3) The plastic retainer is of a symmetrical structure up and down, can only be applied to linear guide rails of corresponding models, and has a narrow application range.

Accordingly, there is a need to ameliorate one or more of the problems with the related art solutions described above.

It is noted that this section is intended to provide a background or context to the disclosure as recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.

SUMMERY OF THE UTILITY MODEL

It is an object of embodiments of the present disclosure to provide a ball retainer, thereby overcoming, at least to some extent, one or more of the problems due to the limitations and disadvantages of the related art.

The disclosed embodiments provide a ball retainer comprising:

a body: the body is provided with a plurality of ball mounting holes for arranging balls at equal intervals;

a plurality of spacers: the spacer is arranged between every two adjacent balls and comprises a first spacing part and a second spacing part, the first spacing part and the second spacing part are arranged on two surfaces of the body, and the distances from the top surface of the body to the body of the first spacing part and the second spacing part are different.

In an embodiment of the present disclosure, a cross section of the first spacer is arcuate or partially circular.

In an embodiment of the present disclosure, the arch is provided with a hollow structure.

In an embodiment of the disclosure, a cross section of the second spacer portion is U-shaped, and an outer side surface of a middle section of the U-shaped is the same as an extending direction of the body.

In an embodiment of the present disclosure, an inner side surface of the middle section of the U-shape is circular arc.

In one embodiment of the present disclosure, the ball retainer is linear or annular.

In an embodiment of the present disclosure, cross sections of the first spacer and the second spacer belong to the same circle, and shapes of the first spacer and the second spacer are different.

In an embodiment of the present disclosure, the ball retainer is integrally formed.

In an embodiment of the present disclosure, the ball mounting hole covers a part of the ball.

In an embodiment of the present disclosure, the material of the ball retainer is polyamide nylon.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

according to the ball retainer disclosed by the embodiment of the disclosure, the asymmetric spacer is arranged relative to the body, so that on one hand, the contact area between the ball retainer and the ball is reduced, the contact area between the ball retainer and the guide rail is increased, and the running stability of the guide rail is ensured; on the other hand, due to the asymmetric design of the spacing piece, the spacing piece can be matched with guide rails of more models, and the application range is wide.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.

Fig. 1 shows a perspective view of a ball retainer in an exemplary embodiment of the present disclosure;

FIG. 2 illustrates a front view structural schematic of a ball retainer in an exemplary embodiment of the present disclosure;

FIG. 3 illustrates a schematic top view of a ball retainer in an exemplary embodiment of the present disclosure;

fig. 4 shows a left side view schematic structure of the ball retainer in the exemplary embodiment of the present disclosure.

Reference numerals:

100. the ball bearing comprises a body, 101, ball mounting holes, 200, spacers, 201, a first spacing part, 202 and a second spacing part.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of embodiments of the disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.

The disclosed embodiments in this example embodiment provide a ball retainer, as shown in fig. 1 to 4, that may include: the ball bearing device comprises a body 100 and a plurality of spacers 200, wherein the body 100 is provided with a plurality of ball mounting holes 101 for arranging balls at equal intervals; the spacer 200 is disposed between every two adjacent balls, the spacer 200 includes a first spacer 201 and a second spacer 202, the first spacer 201 and the second spacer 202 are disposed on two surfaces of the body 100, and distances from the top surface of the body 100 to the body 100 of the first spacer 201 and the second spacer 202 are different.

In the embodiment, the asymmetrical spacer is arranged relative to the body, so that on one hand, the contact area of the spacer and the ball is reduced, the contact area of the ball and the guide rail is increased, and the running stability of the guide rail is ensured; on the other hand, due to the asymmetric design of the spacing piece, the spacing piece can be matched with guide rails of more models, and the application range is wide.

Alternatively, in some embodiments, as shown in fig. 4, the cross-section of the first spacer 201 may be arcuate or partially circular. The cross-sectional shape of the first spacer 201 may be more than half of an arc shape and more than half of a circular ring shape, but is not limited thereto, and may also be a polygon, other irregular shapes, and the like. Further, optionally, in some embodiments, the arch may be provided with a hollow structure, so that a contact area between the ball and the first spacer 201 may be reduced, friction may be reduced, wear of the ball retainer may be reduced, and a contact area between the ball and the guide rail may be increased, thereby ensuring stability of operation. The first spacing portion 201 is used for spacing two adjacent balls, so that the balls are not in contact with each other, and supporting the balls.

Alternatively, in some embodiments, as shown in fig. 4, the cross section of the second spacer 202 may be U-shaped, but is not limited thereto, and an outer side surface of a middle section of the U-shape is the same as the extending direction of the body, for example, the outer side surface of the middle section of the U-shape is a planar structure which is the same as the extending direction of the body. The second spacer 202 is used to space two adjacent balls from each other, prevent the balls from contacting each other, and support the balls. The height of the second spacing part 202 in the direction perpendicular to the extending direction of the body is smaller than the height of the first spacing part 201 in the direction, so that the retainer can be suitable for different types of guide rails, and the application range of the ball retainer is expanded. Further, in some embodiments, the inner side surface of the middle section of the U-shape may be circular arc, but is not limited thereto, as long as the ball is isolated and supported.

Alternatively, in some embodiments, the ball retainers may be linear or circular, and the ball retainers may be formed in various shapes for the guide rails according to the requirements of the guide rails.

Alternatively, in some embodiments, the cross-sections of the first spacer 201 and the second spacer 202 may belong to the same circle, but the invention is not limited thereto, and the first spacer 201 and the second spacer 202 have different shapes. For example, the first spacing portion 201 may be a more than half circle, the second spacing portion 202 may be a less than half circle, and the heights of the first spacing portion 201 and the second spacing portion 202 from the body are different, so that the ball retainer may be adapted to various types of guide rails.

Optionally, in some embodiments, the ball retainer may be integrally formed, but is not limited thereto, so as to save manufacturing processes and costs, and have high consistency.

Optionally, in some embodiments, the ball mounting hole 101 covers part of the ball, and the ball mounting hole 101 covers and supports the ball.

Optionally, in some embodiments, the material of the ball retainer may be polyamide nylon, but is not limited thereto, and has excellent properties of chemical corrosion resistance, wear resistance, lubrication, silence, high and low temperature resistance, aging resistance, dimensional stability, and the like. Has good strength and elasticity, can be bent into a ring shape, and has no clamping stagnation phenomenon during operation.

In the above embodiments, optionally, the first spacing portion 201 and the second spacing portion 202 of the spacer 200 are engaged with the balls, for example, they may be engaged without seams.

It is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like in the foregoing description are used for indicating or indicating the orientation or positional relationship illustrated in the drawings, merely for the convenience of describing the disclosed embodiments and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and therefore should not be considered limiting of the disclosed embodiments.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present disclosure, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present disclosure, unless otherwise specifically stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In the embodiments of the present disclosure, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims (10)

1. A ball retainer, comprising:

a body: the body is provided with a plurality of ball mounting holes for arranging balls at equal intervals;

a plurality of spacers: the spacer is arranged between every two adjacent balls and comprises a first spacing part and a second spacing part, the first spacing part and the second spacing part are arranged on two surfaces of the body, and the distances from the top surface of the body to the body of the first spacing part and the second spacing part are different.

2. The ball retainer of claim 1, wherein the first spacer is arcuate or partially circular in cross-section.

3. The ball retainer of claim 2, wherein said arch is provided with cutouts.

4. The ball retainer according to claim 1, wherein the second spacer has a U-shaped cross section, and an outer side surface of a middle section of the U-shaped cross section is the same as an extending direction of the body.

5. The ball retainer of claim 4 wherein the inner side of the middle section of the U is rounded.

6. The ball retainer of claim 1, wherein the ball retainer is linear or annular.

7. The ball retainer of claim 1, wherein said first and second spacers have cross sections that belong to the same circle, said first and second spacers having different shapes.

8. The ball retainer of any of claims 1-7, wherein said ball retainer is integrally formed.

9. The ball retainer of any of claims 1-7, wherein the ball mounting holes wrap around a portion of the balls.

10. The ball retainer of any of claims 1-7, wherein the ball retainer is made of polyamide nylon.

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