CN219221037U

CN219221037U - U-shaped needle roller retainer

Info

Publication number: CN219221037U
Application number: CN202320292991.XU
Authority: CN
Inventors: 丁海生
Original assignee: Dongguan Ruishi Boge Plastic And Hardware Products Co ltd
Current assignee: Dongguan Ruishi Boge Plastic And Hardware Products Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-06-20
Anticipated expiration: 2033-02-22

Abstract

The utility model belongs to the technical field of guide rail retainers, and particularly relates to a U-shaped needle roller retainer. A U-shaped needle roller retainer comprises a U-shaped retaining frame and a plurality of needle rollers with cylindrical structures; the three sides of the holding frame are respectively provided with a plurality of needle roller grooves for installing needle rollers, and the needle roller grooves are distributed at equal intervals; the two sides of the needle roller groove are respectively provided with a clamping block, and the needle roller can be rotatably arranged and is clamped in the needle roller groove by the clamping blocks; each retention frame side includes a first planar surface and an inverted trapezoidal concave surface contiguous with the first planar surface, and a second planar surface contiguous with the inverted trapezoidal concave surface. The U-shaped needle roller retainer is formed by arranging three retaining frame side surfaces provided with the needle rollers in a U-shaped structure, and compared with the guide rail retainer in the prior art, the U-shaped needle roller retainer is more in needle roller arrangement and larger in retainer area, so that the guide rail is smoother and more stable in operation, and the problem of clamping is not easy to occur.

Description

U-shaped needle roller retainer

Technical Field

The utility model belongs to the technical field of guide rail retainers, and particularly relates to a U-shaped needle roller retainer.

Background

In the development of various automatic precision apparatuses, a guide rail is a very important part, and a cage is a part of the guide rail, which is generally used to isolate rolling bodies to keep a certain distance between the rolling bodies, avoid the contact between the two rolling bodies, and generally guide the rolling bodies and keep them in the guide rail.

The existing retainer is usually provided with one or two retaining frames, and a row of rolling needles are added on the retaining frames to replace two guide rails which are clamped together and directly slide together, so that the carrying capacity and the sliding precision of the guide rails are improved, but because the guide rails are processed with high precision, if foreign matters such as dust and fragments enter the retainer, the service life of products is shortened or the precision is reduced. The conventional cage is usually fixed and clamped with the needle roller, and it is quite difficult to take out and clean foreign matters such as scraps.

Disclosure of Invention

In view of the above, the present utility model provides a U-shaped needle roller cage to solve some or all of the technical problems described in the background art.

The utility model provides a solution for solving the technical problems that:

a U-shaped needle roller retainer comprises a U-shaped retaining frame and a plurality of needle rollers with cylindrical structures; the three sides of the holding frame are respectively provided with a plurality of needle roller grooves for installing needle rollers, and the needle roller grooves are distributed at equal intervals; the two sides of the needle roller groove are respectively provided with a clamping block, and the needle roller can be rotatably arranged and is clamped in the needle roller groove by the clamping blocks;

each retention frame side includes a first planar surface and an inverted trapezoidal concave surface contiguous with the first planar surface, and a second planar surface contiguous with the inverted trapezoidal concave surface.

Further, the needle roller grooves comprise a first section of needle roller grooves and a second section of needle roller grooves; the first section of needle roller grooves and the second section of needle roller grooves are right trapezoid structures formed by encircling a square side face, two right trapezoid side faces and a square bottom face; the first section needle roller grooves and the second section needle roller grooves are equal in size and symmetrically distributed.

Further, the two sides of the first section needle roller groove and the second section needle roller groove are respectively provided with a clamping block, the clamping blocks are arranged at the tops of the two sides of the first section needle roller groove and the second section needle roller groove, and the upper surfaces of the clamping blocks are flush with the upper surface of the first plane.

Further, the upper bottom surface and the lower bottom surface of the needle roller are respectively propped against square side surfaces of the first section of needle roller groove and the second section of needle roller groove; cylindrical surfaces at two ends of the needle roller are respectively propped against two right trapezoid side surfaces, a square bottom surface and a clamping block of the first section of needle roller groove and the second section of needle roller groove.

Further, the square bottom surfaces of the first section needle roller grooves and the second section needle roller grooves are consistent in height and higher than the bottom surface of the inverted trapezoid concave surface, and the height difference deltah of the square bottom surfaces meets the following conditions: Δh is more than or equal to 0.5mm and less than or equal to 5mm.

Further, the height difference Δh=3 mm.

Further, the center distance L of any two adjacent needle grooves and the diameter Da of the upper and lower bottom surfaces of the needle are as follows: da is more than or equal to 2mm and less than or equal to 3.5mm, L is more than or equal to 4mm and less than or equal to 7mm.

Further, the center distance l=6.5 mm between any two adjacent needle grooves, and the diameter da=3 mm of the upper and lower bottom surfaces of the needle.

Further, the holding frame is made of hard rubber materials.

Further, the rolling needle is made of stainless steel materials.

The beneficial technical effects are as follows:

1. the U-shaped needle roller retainer is formed by arranging three retaining frame side surfaces provided with the needle rollers in a U-shaped structure, and compared with the guide rail retainer in the prior art, the U-shaped needle roller retainer is more in needle roller arrangement and larger in retainer area, so that the guide rail is smoother and more stable in operation, and the problem of clamping is not easy to occur;

2. the rotatable setting of kingpin is by fixture block package clamp in the kingpin groove, in guide rail use or course of working, if have foreign matter such as dust or piece to get into the kingpin inslot, through the setting of the trapezoidal concave surface of falling that keeps the frame face, the space that the trapezoidal concave surface formed makes things convenient for the kingpin to take out, is favorable to the clearance maintenance of holder.

The technical scheme and technical effects of the present application will be described in detail below with reference to the drawings and the detailed description of the specification.

Drawings

Fig. 1: the structure of the U-shaped needle roller retainer is schematically shown;

fig. 2: the U-shaped needle roller retainer is a top view;

fig. 3: an enlarged schematic cross-sectional view of the needle grooves at a in fig. 2;

fig. 4: the U-shaped needle roller retainer is a side sectional view;

fig. 5: an enlarged schematic view at B in fig. 4;

fig. 6: the structure of the needle roller is schematically shown;

fig. 7: the structure of the holding frame is schematically shown;

identification description:

10-a holding frame, 20-rolling pins, 30-rolling pin grooves and 40-clamping blocks;

110-a first plane, 120-an inverted trapezoidal concave, 130-a second plane;

310-first section needle roller grooves and 320-second section needle roller grooves.

Detailed Description

Referring to fig. 1 to 7, the present utility model provides a U-shaped needle roller cage, which comprises a U-shaped cage frame 10 and a plurality of needle rollers 20 having a cylindrical structure; the three sides of the holding frame 10 are respectively provided with a plurality of needle roller grooves 30 for installing the needle rollers 20, and the needle roller grooves 30 are distributed at equal intervals; the two sides of the needle roller groove 30 are respectively provided with a clamping block 40, and the needle roller 20 can be rotatably arranged and is clamped in the needle roller groove 30 by the clamping blocks 40;

each retention frame 10 side includes a first planar surface 110 and an inverted trapezoidal concave surface 120 that interfaces with the first planar surface 110, and a second planar surface 130 that interfaces with the inverted trapezoidal concave surface 120.

The U-shaped needle roller retainer is formed by arranging three retaining frame sides provided with needle rollers in a U-shaped structure, and compared with the guide rail retainer in the prior art, the U-shaped needle roller retainer is more in arrangement and larger in retainer area, so that the guide rail is smoother and more stable in operation, and the problem of clamping is not easy to occur.

The needle roller groove 30 includes a first segment of needle roller groove 310 and a second segment of needle roller groove 320; the first section needle roller groove 310 and the second section needle roller groove 320 are right trapezoid structures formed by encircling a square side face, two right trapezoid side faces and a square bottom face; the first section needle roller grooves 310 and the second section needle roller grooves 320 are equal in size and symmetrically distributed.

The two sides of the first section of needle roller groove 310 and the second section of needle roller groove 320 are respectively provided with a clamping block 40, the clamping blocks 40 are arranged at the tops of the two sides of the first section of needle roller groove 310 and the second section of needle roller groove 320, and the upper surfaces of the clamping blocks 40 are flush with the upper surface of the first plane 110.

The upper bottom surface and the lower bottom surface of the needle roller 20 are respectively propped against square side surfaces of the first section of needle roller grooves 310 and the second section of needle roller grooves 320; cylindrical surfaces at two ends of the needle roller 20 are respectively abutted against two right trapezoid side surfaces, a square bottom surface and a clamping block 40 of the first section of needle roller groove 310 and the second section of needle roller groove 320.

The square bottom surfaces of the first section needle roller grooves 310 and the second section needle roller grooves 320 are identical in height and are higher than the bottom surface of the inverted trapezoidal concave surface 120. The height difference deltah thereof satisfies: Δh is more than or equal to 0.5mm and less than or equal to 5mm.

Preferably, the height difference Δh=3 mm.

The center distance L of any two adjacent needle grooves 30 and the diameter Da of the upper and lower bottom surfaces of the needle roller 20 satisfy: da is more than or equal to 2mm and less than or equal to 3.5mm, L is more than or equal to 4mm and less than or equal to 7mm.

Preferably, the center distance l=6.5 mm between any two adjacent needle grooves 30, and the diameter da=3 mm of the upper and lower bottom surfaces of the needle roller 20.

The holding frame 10 is made of a hard rubber material.

The needle roller 20 is made of stainless steel materials.

The retaining frame 10 can be made of hard plastic material, and is integrally formed with the needle roller grooves 30 and the clamping blocks 40; the roller pin is made of metal materials such as stainless steel, and when in processing, the roller pin 20 can be pressed into the roller pin groove 30 by applying external force to the roller pin 20, and at the moment, the roller pin 20 can freely roll and is clamped in the roller pin groove 30 by the clamping block 40. Because the bottom surface of the needle roller groove 30 is higher than the bottom surface of the inverted trapezoidal concave surface 120, the installed needle roller 20 and the inverted trapezoidal concave surface 120 form a space, and when needed, the needle roller can be pried out by external force in the space, thereby being beneficial to cleaning and maintenance of the retainer.

The technical solution and effects of the present utility model have been described in detail with reference to the drawings and the specific embodiments of the present utility model, it should be noted that the specific embodiments disclosed in the specification are only preferred embodiments of the present utility model, and other embodiments may be developed by those skilled in the art based on the above description; any simple modification and equivalent substitutions without departing from the innovative concepts of the present utility model are intended to be covered by the present utility model, falling within the protective scope of the patent.

Claims

1. The utility model provides a U type kingpin holder which characterized in that:

comprises a U-shaped holding frame (10) and a plurality of rolling pins (20) with cylindrical structures; the three side surfaces of the holding frame (10) are respectively provided with a plurality of needle roller grooves (30) for installing the needle rollers (20), and the needle roller grooves (30) are distributed at equal intervals; clamping blocks (40) are respectively arranged on two sides of the needle roller groove (30), and the needle roller (20) can be rotatably arranged and is clamped in the needle roller groove (30) by the clamping blocks (40);

each of the holding frame (10) sides includes a first plane (110) and an inverted trapezoidal concave surface (120) that is contiguous with the first plane (110), and a second plane (130) that is contiguous with the inverted trapezoidal concave surface (120).

2. The U-shaped needle roller cage of claim 1 wherein:

the needle roller grooves (30) comprise a first section of needle roller grooves (310) and a second section of needle roller grooves (320); the first section needle roller groove (310) and the second section needle roller groove (320) are right trapezoid structures formed by encircling a square side face, two right trapezoid side faces and a square bottom face; the first section needle roller grooves (310) and the second section needle roller grooves (320) are equal in size and are symmetrically distributed.

3. The U-shaped needle roller cage of claim 2 wherein:

the two sides of the first section needle roller groove (310) and the second section needle roller groove (320) are respectively provided with a clamping block (40), the clamping blocks (40) are arranged at the tops of the two sides of the first section needle roller groove (310) and the second section needle roller groove (320), and the upper surfaces of the clamping blocks (40) are flush with the upper surface of the first plane (110).

4. A U-shaped needle roller cage as claimed in claim 3, wherein:

the upper bottom surface and the lower bottom surface of the needle roller (20) are respectively propped against square side surfaces of the first section of needle roller grooves (310) and the second section of needle roller grooves (320); cylindrical surfaces at two ends of the needle roller (20) are respectively abutted against two right trapezoid side surfaces, a square bottom surface and a clamping block (40) of the first section of needle roller groove (310) and the second section of needle roller groove (320).

5. The U-shaped needle roller cage of claim 4 wherein:

the square bottom surfaces of the first section needle roller grooves (310) and the second section needle roller grooves (320) are identical in height and higher than the bottom surface of the inverted trapezoid concave surface (120), and the height difference delta h of the square bottom surfaces meets the following conditions: Δh is more than or equal to 0.5mm and less than or equal to 5mm.

6. The U-shaped needle roller cage of claim 5 wherein: the height difference Δh=3 mm.

7. The U-shaped needle roller cage of claim 5 wherein:

the center distance L of any two adjacent needle roller grooves (30) and the diameter Da of the upper bottom surface and the lower bottom surface of the needle roller (20) are as follows: da is more than or equal to 2mm and less than or equal to 3.5mm, L is more than or equal to 4mm and less than or equal to 7mm.

8. The U-shaped needle roller cage of claim 7 wherein:

the center distance L=6.5 mm between any two adjacent needle roller grooves (30), and the diameter Da=3 mm of the upper bottom surface and the lower bottom surface of the needle roller (20).

9. The U-shaped needle roller cage of any one of claims 1-8, wherein: the holding frame (10) is made of hard rubber materials.

10. The U-shaped needle roller cage of any one of claims 1-8, wherein: the rolling pin (20) is made of stainless steel materials.