CN204419860U - Cage and chain type ball retaining device - Google Patents

Abstract

A chain ball holding device includes a plurality of balls and a holder. The retainer includes two connectors and a plurality of spacers. The connecting pieces are respectively arranged on two sides of the ball, the head and the tail of each connecting piece are provided with a joint surface, and the joint surfaces of each connecting piece are overlapped in one arrangement direction of the ball and are in seamless joint. The distance pieces are arranged between the connecting pieces at intervals along the arrangement direction, and one ball is arranged between every two distance pieces. The head and the tail of the retainer are overlapped in the arrangement direction of the balls, and the overlapped parts are in seamless joint, so that the head and the tail of the retainer can obtain good combination effect, and can present corresponding arc shapes along with the arc bending condition of a raceway during operation, and the problems of friction, noise and the like caused by operation deflection of the connecting piece can be solved.

Description

Cage and chain type ball retaining device

technical field

The utility model relates to a retainer and a retaining device, in particular to a retainer and a chain-type ball retaining device applied to a chain-type ball retaining device.

Background technique

Referring to Fig. 1, Fig. 2 and Fig. 3, the chain-type ball retaining device is one of the important components of the current linear slide rail. Back-and-forth circular movement between, can make the linear slide rail obtain low friction force and smooth sliding effect.

The cage 12 generally includes two connecting pieces 121 arranged on both sides of the balls, and a plurality of spacers 122 for separating the balls 11 respectively. The connection style, or the style shown in Fig. 2 and Fig. 3 is pivoted through the head and tail of the connecting piece 121.

However, since the raceway 19 is a circulation pipeline, it generally has two straight pipe portions 191 in the shape of straight pipes, and two return pipe portions 192 respectively connected to the straight pipe portions 191 and in the shape of curved pipes. The raceway 19 is a cylindrical pipe, so when the head and tail ends of the retainer 12 run to the return pipe portion 192 in a bent tubular shape, the connecting piece 121 will deflect outward due to its own elastic straightening. When the position of the connecting piece 121 touches any one of the two imaginary lines in Fig. 1 and Fig. 3, it means that the connecting piece 121 has contacted and rubbed against the wall surface of the return pipe portion 192, so that the retainer 12 will be in operation. When the friction resistance increases, the rolling will not be smooth, and problems such as noise will be generated during operation due to friction.

Contents of the invention

The first object of the present utility model is to provide a retainer which can solve the above problems.

The retainer of the utility model is suitable for a plurality of balls arranged at intervals, and the retainer includes two connecting parts and a plurality of spacers.

The connectors are arranged on two sides of the balls respectively, and the head and tail of each connector have a joint surface, and the joint surfaces of each connector overlap in an arrangement direction of the balls and are seamlessly jointed.

The spacers are arranged at intervals between the connecting pieces along the arrangement direction, and a ball is arranged between every two spacers.

In the retainer of the present invention, the head and tail of each connecting piece also have a contact surface at the end and a limit surface, and the contact surfaces of the head and tail of each connecting piece are seamlessly joined to the other limit surface.

In the retainer of the present invention, the joint surface extends along the arrangement direction, the limiting surface and the abutting surface are substantially parallel to each other and substantially perpendicular to the joint surface.

The retainer of the present utility model also includes two joint spacers, respectively connected to the head and tail of the connector, and each joint spacer has a joint surface, and the joint surface of the joint spacer is on the The arrangement direction overlaps and joins seamlessly.

In the retainer of the present utility model, each engaging spacer also has an abutting surface at the outer end and a limiting surface, and the abutting surfaces of the engaging spacers are seamlessly joined to the other limiting surface respectively. The joint surface of the joint spacer extends along the arrangement direction, the limit surface of the joint spacer and the abutting surface of the joint spacer are substantially parallel to each other and substantially perpendicular The engagement surface of the engagement spacer.

In the retainer of the present invention, the seamless joint method is one of bonding and welding.

The second purpose of the present utility model is to provide a chain type ball retaining device which can solve the above problems.

The chain type ball retaining device of the utility model comprises a plurality of balls and a retainer.

The retainer includes two connecting pieces and a plurality of spacers.

The connectors are arranged on two sides of the balls respectively, and the head and tail of each connector have a joint surface, and the joint surfaces of each connector overlap in an arrangement direction of the balls and are seamlessly jointed.

The spacers are arranged at intervals between the connecting pieces along the arrangement direction, and a ball is arranged between every two spacers.

In the chain-type ball retaining device of the present utility model, the head and tail of each connecting piece also have an abutting surface at the end and a limit surface, and the abutting surfaces of the head and tail of each connecting piece are respectively seamless. Jointed with the other limit surface, the joint surface extends along the arrangement direction, the limit surface and the abutting surface are substantially parallel to each other and substantially perpendicular to the joint surface.

In the chain-type ball retaining device of the present utility model, the retainer also includes two joint spacers, which are respectively connected to the head and tail of the connecting piece, and each joint spacer has a joint surface, and the joint spacers The joint surfaces of the pieces overlap in this alignment direction and are joined seamlessly.

In the chain-type ball retaining device of the present utility model, each engaging spacer also has an abutting surface at the outer end and a limiting surface, and the abutting surfaces of the engaging spacers are respectively seamlessly joined to Another limit surface, the joint surface of the joint spacer extends along the arrangement direction, the limit surface of the joint spacer and the abutting surface of the joint spacer are substantially parallel to each other and substantially perpendicular to the joint surface of the joint spacer.

The beneficial effect of the utility model is that: by overlapping the head and the tail of the retainer in the arrangement direction of the balls, and seamlessly joining the overlapping parts, the head and tail of the retainer can obtain a good combination effect, and It can present a corresponding curved shape according to the curved state of a raceway during operation, so it can solve the problems of friction and noise caused by the deflection of the connecting piece in the direction of centrifugal force during operation in the prior art.

Description of drawings

Fig. 1 is a schematic diagram of an existing chain-type ball retaining device in a raceway;

Fig. 2 is a schematic top view of another existing chain-type ball retaining device;

Fig. 3 is a schematic diagram of another existing chain-type ball retaining device in a raceway;

Fig. 4 is a schematic diagram of an embodiment of the chain-type ball retaining device of the present invention in a raceway;

Figure 5 is an exploded schematic view of the embodiment; and

Fig. 6 is a schematic side view of the embodiment.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail:

Referring to Fig. 4, Fig. 5 and Fig. 6, the embodiment of the chain-type ball retaining device of the present utility model is suitable for circular operation on a raceway 9, and the raceway 9 has two straight pipe parts 91 in a straight pipe shape, and two Two arc-shaped return pipe portions 92 respectively connected to the straight pipe portions 91 are formed. The chain-type ball retaining device includes a plurality of balls 2 and a retainer 3 .

The retainer 3 is arranged at intervals for the balls 2, and the head and tail of the retainer 3 overlap in an arrangement direction of the balls 2, and the overlapping parts are seamlessly joined. The retainer 3 includes two connecting parts 31, A plurality of spacers 32 , and two joint spacers 33 .

In this embodiment, the connecting member 31 is integrally formed with the spacer 32 and the joining spacer 33 to save manufacturing process and cost, but it is not limited thereto.

The connectors 31 are arranged on both sides of the ball 2, and each connector 31 has a joint surface 311, an abutting surface 312 at the end, and a limit surface 313 at the head and tail of each connector 31. Each connector 31 The joint surfaces 311 overlap in the arrangement direction and are seamlessly jointed. In a preferred application, the abutting surfaces 312 at the head and tail of each connecting piece 31 can be seamlessly jointed to the limit of the other. The positioning surface 313 , and the joint surface 311 extends along the arrangement direction, the position limiting surface 313 and the abutting surface 312 are substantially parallel to each other and substantially perpendicular to the joint surface 311 .

The spacers 32 are arranged at intervals between the connecting pieces 31 along the arrangement direction, and a ball 2 is arranged between every two spacers 32 .

The joint spacers 33 are respectively connected to the head and tail of the connector 31, and each joint spacer 33 has a joint surface 331, an abutting surface 332 at the outer end, and a limiting surface 333, The joint surface 331 of the joint spacer 33 overlaps in the alignment direction. In a preferred application, the joint surface 331 of the joint spacer 33 can be seamlessly jointed, and the joint The abutting surfaces 332 of the spacers 33 are seamlessly joined to the other limiting surface 333 respectively, the joint surfaces 331 of the joined spacers 33 extend along the arrangement direction, and the jointed spacers 33 The limiting surface 333 and the abutting surface 332 of the engaging spacer 33 are substantially parallel to each other and substantially perpendicular to the engaging surface 331 of the engaging spacer 33 .

In this embodiment, the seamless joint is adhesive bonding, but welding and other means can also be used to achieve a tight joint effect at the overlap of the retainer 3 .

Through the above description, the advantages of this embodiment can be summarized as follows:

By overlapping the head and tail of the retainer 3 in the arrangement direction of the balls 2, and seamlessly joining the overlapping parts, a good bonding effect can be obtained for the head and tail of the retainer 3, so even when the retainer 3 runs to the return pipe part 92, through the sufficient connection of the connecting part 31 and the joint spacer 33, the connecting part 31 can smoothly follow the arc of the return pipe part 92 Instead, it presents a corresponding arc shape, so that the connecting piece 31 will not pop up in the direction of centrifugal force as in the prior art and contact and rub against the wall surface of the return pipe portion 92, so it will not cause the retainer 3 to be damaged during operation. Increased frictional resistance, poor rolling, or noise during operation due to friction.

To sum up, so can really reach the purpose of the utility model.

What is described above is only the embodiment of the utility model, and should not limit the scope of implementation of the utility model, that is, all simple equivalent changes and modifications made according to the claims of the utility model and the contents of the description are all Still belong to the scope of the present utility model.

Claims (10)

1. a retainer, be applicable to arrange for multiple ball interval, this retainer comprises two

Link and multiple spacer element:

It is characterized in that:

Described link is divided into described ball both sides, each link all there is a mating face end to end, the described mating face of each link is overlapping in an orientation of described ball, and seamless combination;

Described spacer element is arranged at intervals between described link along this orientation, arranges between every two spacer elements for a ball.

2. retainer according to claim 1, it is characterized in that: each link end to end also there is support surface that is positioned at end respectively, and a confined planes, and the support surface end to end of each link difference seamless combination is in another confined planes.

3. retainer according to claim 2, is characterized in that: described mating face extends along this orientation, mating face described in the parallel to each other in fact and substantial orthogonality of described confined planes and described support surface.

4. retainer according to claim 2, it is characterized in that: also comprise two and engage spacer element, be connected to head and the tail place of described link, and each joint spacer element has a mating face, the described mating face of described joint spacer element is overlapping in this orientation, and seamless combination.

5. retainer according to claim 4, it is characterized in that: each engages spacer element and also has the support surface that is positioned at outside end, and a confined planes, and the described support surface difference seamless combination of described joint spacer element is in another confined planes, the described mating face of described joint spacer element extends along this orientation, engages the described mating face of spacer element described in the described confined planes of described joint spacer element and substantial orthogonality parallel to each other in fact with the described support surface of described joint spacer element.

6. the retainer according to any one of claim 3 and claim 5, is characterized in that: this seamless combination mode is for using gluing and welding one of them.

7. refine a bar formula ball holding device, comprise multiple ball and a retainer;

This retainer, comprises two links and multiple spacer element;

It is characterized in that:

Described link is divided into described ball both sides, each link all there is a mating face end to end, the described mating face of each link is overlapping in an orientation of described ball, and seamless combination,

Described spacer element is arranged at intervals between described link along this orientation, arranges between every two spacer elements for a ball.

8. refining bar formula ball holding device according to claim 7, it is characterized in that: each link end to end also there is support surface that is positioned at end respectively, and a confined planes, and the support surface end to end of each link difference seamless combination is in another confined planes, described mating face extends along this orientation, mating face described in the parallel to each other in fact and substantial orthogonality of described confined planes and described support surface.

9. refining bar formula ball holding device according to claim 8, it is characterized in that: this retainer also comprises two and engages spacer element, be connected to head and the tail place of described link, and each joint spacer element has a mating face, the described mating face of described joint spacer element is overlapping in this orientation, and seamless combination.

10. refining bar formula ball holding device according to claim 9, it is characterized in that: each engages spacer element and also has the support surface that is positioned at outside end, and a confined planes, and the described support surface difference seamless combination of described joint spacer element is in another confined planes, the described mating face of described joint spacer element extends along this orientation, engages the described mating face of spacer element described in the described confined planes of described joint spacer element and substantial orthogonality parallel to each other in fact with the described support surface of described joint spacer element.