Novel crossed roller guide rail assembly

Abstract

The utility model discloses a novel crossed roller guide rail assembly, which relates to the field of crossed roller guide rails, and comprises a fixed rail and a sliding rail, a roller assembly is arranged between the fixed rail and the sliding rail, the roller assembly comprises a retainer and a roller, the roller is rotatably connected to the retainer, and the retainer is provided with a plurality of rollers. Anti-creeping assemblies are distributed at the center of the inner side of the retainer and in the fixed rail, and the anti-creeping assemblies are used for preventing the retainer from shifting in the moving process; the anti-creeping assembly comprises a tooth groove and a gear, a tooth block meshed with the gear is formed on the inner side of the tooth groove, and the gear is rotationally connected to the center of the inner side of the retainer. Through the arrangement of the rotary connecting assembly, the gear on the retainer can be rapidly replaced, the replacement process is convenient, the friction force generated when the gear rotates can be reduced, and the maintenance cost is relatively low.

Description

Technical Field

[0001] The utility model relates to the field of cross roller guide rails, in particular to a novel cross roller guide rail component. Background Art

[0002] The cross roller guide is composed of two guide rails with V-shaped raceways, roller cages and cylindrical rollers. The cross-arranged cylindrical rollers reciprocate on the precision-ground V-shaped raceway surface, which can withstand loads in all directions and achieve high-precision and smooth linear motion.

[0003] In the prior art, in order to prevent the retaining frame from creeping, gears are generally added to the retaining frame and racks are added to the guide rails to achieve smooth operation of the retaining frame. However, it is found during the use of mobile phones that the gears will wear during the reciprocating movement, resulting in a decrease in the fit with the rack and a corresponding decrease in the anti-creep effect. At this time, it is generally necessary to simultaneously replace the entire retaining frame and the rollers, which is a relatively costly method. Utility Model Content

[0004] The purpose of the utility model is to provide a novel cross roller guide rail assembly in order to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel cross roller guide rail assembly, comprising a fixed rail and a sliding rail, a roller assembly is installed between the fixed rail and the sliding rail, the roller assembly comprises a cage and a roller, the roller is rotatably connected to the cage, an anti-creep assembly is distributed at the inner center of the cage and inside the fixed rail, the anti-creep assembly is used to prevent the cage from deflecting during movement;

[0006] The anti-creep assembly includes a tooth groove and a gear, a tooth block meshing with the gear is formed on the inner side of the tooth groove, and the gear is rotatably connected to the inner center of the retaining frame;

[0007] The gear and the retaining frame are detachably connected via a rotating connecting assembly.

[0008] As a further solution of the utility model: the rotating connection assembly includes two limit shafts formed on the inner side of the retaining frame, the two limit shafts and the interior of the retaining frame are provided with aligned through holes, and a gap is formed between the two limit shafts for the gear to be inserted.

[0009] As a further solution of the utility model: the rotating connection assembly also includes a threaded sleeve and a bolt slidably connected to the inside of the through hole, the straight rod portion of the threaded sleeve is a hollow thread structure, and the threaded portion of the bolt is connected to the hollow thread of the threaded sleeve.

[0010] As a further solution of the utility model: the rotating connection assembly also includes a connecting groove opened on the outer wall of the threaded sleeve, one end of the inner wall of the connecting groove is connected to a spring, one end of the spring is fixedly connected to a moving block, and a ball is embedded in the end of the moving block away from the spring to rotate, and an annular groove for the ball to rotate is opened at the center of the gear.

[0011] As a further solution of the utility model: a limiting groove is provided on the outer periphery of the moving block, and a limiting block is provided on the inner periphery of the connecting groove and is slidably connected to the limiting groove.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. By setting a rotating connection assembly, the gears on the retaining frame can be quickly replaced, and the replacement process is relatively convenient. The friction when the gears rotate can be reduced, and the maintenance cost is relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the connection between the cage and the roller of the utility model;

[0016] Figure 3 For the utility model Figure 2 A partial enlarged view of the middle part;

[0017] Figure 4 This is a schematic diagram of the installation of the gear of the utility model;

[0018] Figure 5 For the utility model Figure 4 A partial enlarged view of point B in the middle.

[0019] In the figure: 1. fixed rail; 2. sliding rail; 3. retaining frame; 4. roller; 5. tooth groove; 6. gear; 7. limit shaft; 8. through hole; 9. threaded sleeve; 10. bolt; 11. annular groove; 12. connecting groove; 13. spring; 14. moving block; 15. limit block; 16. limit groove; 17. ball. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 to Figure 5 In the embodiment of the utility model, a new type of cross roller guide rail assembly includes a fixed rail 1 and a sliding rail 2, a roller assembly is installed between the fixed rail 1 and the sliding rail 2, the roller assembly includes a retaining frame 3 and a roller 4, the roller 4 is rotatably connected to the retaining frame 3, an anti-creep assembly is distributed at the inner center of the retaining frame 3 and in the fixed rail 1, the anti-creep assembly is used to prevent the retaining frame 3 from shifting during movement; the anti-creep assembly includes a tooth groove 5 and a gear 6, the inner side of the tooth groove 5 is formed with a tooth block meshing with the gear 6, the gear 6 is rotatably connected to the inner center of the retaining frame 3; the gear 6 and the retaining frame 3 are detachably connected by a rotating connection assembly.

[0022] In this embodiment: when the sliding rail 2 slides, the sliding rail 2 and the roller 4 rotatably connected to the retaining frame 3 have relative friction, and the roller 4 rotates under the action of friction. At the same time, the roller 4 drives the retaining frame 3 to move in the track groove of the fixed rail 1 under the action of self-rotation. At this time, the gear 6 and the tooth block in the tooth groove 5 are meshed with each other, and the gear 6 rotates without affecting the movement of the retaining frame 3. At the same time, the gear 6 and the tooth groove 5 can limit the position of the retaining frame 3, thereby playing an anti-creep effect;

[0023] When the gear 6 is worn during long-term use, resulting in poor anti-creep effect, the gear 6 is replaced by rotating the connecting assembly.

[0024] Please refer to Figure 2-Figure 5 The rotating connection assembly includes two limit shafts 7 formed on the inner side of the retaining frame 3, and the two limit shafts 7 and the interior of the retaining frame 3 are both provided with aligned through holes 8, and a gap for the gear 6 to be inserted is formed between the two limit shafts 7. The rotating connection assembly also includes a threaded sleeve 9 and a bolt 10 slidably connected to the inside of the through hole 8. The straight rod portion of the threaded sleeve 9 is a hollow thread structure, and the threaded portion of the bolt 10 is connected to the hollow thread of the threaded sleeve 9. The rotating connection assembly also includes a connecting groove 12 opened on the outer wall of the threaded sleeve 9, and a spring 13 is connected to one end of the inner wall of the connecting groove 12. A moving block 14 is fixedly connected to one end of the spring 13, and a ball 17 is embedded and rotated at one end of the moving block 14 away from the spring 13. An annular groove 11 for the ball 17 to rotate is opened at the center of the gear 6, and a limit groove 16 is opened on the outer periphery of the moving block 14, and a limit block 15 slidably connected to the limit groove 16 is opened on the inner periphery of the connecting groove 12.

[0025] In this embodiment: when replacing the gear 6, use a tool (such as a screwdriver) to dock with the cross groove at the end of the bolt 10 and rotate it to disassemble the threaded sleeve 9 and the bolt 10, and then the worn gear 6 can be disassembled, and then a new gear 6 of the same specification is replaced, and the new gear 6 is inserted and aligned from the gap between the two limit shafts 7, and then the threaded sleeve 9 is first placed in the through hole 8, and inserted from the circular hole at the center of the gear 6. At this time, the threaded sleeve 9 drives the ball 17 to contact the circular hole, and the reaction force of the extrusion acts on the ball 17, and the ball 17 squeezes the moving block 14, and the moving block 14 compresses the spring 13. At the same time, the moving block 14 drives the limiting groove 16 to slide along the outer wall of the limiting block 15 until the ball 17 completely enters the connecting groove 12;

[0026] Until the ball 17 is aligned with the annular groove 11 on the horizontal plane, the spring 13 is reset, and the reset spring 13 pushes the moving block 14 to move outward again along the connecting groove 12, and the moving block 14 drives the ball 17 to be stuck in the annular groove 11, and then the bolt 10 is inserted from another through hole 8 and threadedly connected with the threaded sleeve 9. The connection is completed. Since the end plate at the top of the threaded sleeve 9 is a non-circular structure (can be: a regular polygon), the through hole 8 plugged with the threaded sleeve 9 is consistent with the outer wall of the end plate of the threaded sleeve 9;

[0027] Therefore, when the gear 6 rotates, the threaded sleeve 9 and the bolt 10 are both in a stationary state, and the gear 6 drives the annular groove 11 and the ball 17 to generate relative friction during the rotation process. The ball 17 rotates due to the friction force, thereby avoiding wear caused by excessive friction.

[0028] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A novel cross roller guide rail assembly, comprising a fixed rail (1) and a sliding rail (2), wherein a roller assembly is installed between the fixed rail (1) and the sliding rail (2), characterized in that: The roller assembly comprises a retaining frame (3) and a roller (4), wherein the roller (4) is rotatably connected to the retaining frame (3), and an anti-creep assembly is distributed at the inner center of the retaining frame (3) and inside the fixed rail (1), wherein the anti-creep assembly is used to prevent the retaining frame (3) from deflecting during movement; The anti-creep component comprises a tooth groove (5) and a gear (6); a tooth block meshing with the gear (6) is formed on the inner side of the tooth groove (5); and the gear (6) is rotatably connected to the inner center of the retaining frame (3); The gear (6) and the retaining frame (3) are detachably connected via a rotating connection assembly.

2. A novel cross roller guide rail assembly according to claim 1, characterized in that: The rotating connection assembly comprises two limiting shafts (7) formed on the inner side of the retaining frame (3), the two limiting shafts (7) and the interior of the retaining frame (3) are both provided with aligned through holes (8), and a gap is formed between the two limiting shafts (7) for the gear (6) to be inserted.

3. A novel cross roller guide rail assembly according to claim 2, characterized in that: The rotating connection assembly also includes a threaded sleeve (9) and a bolt (10) slidably connected to the inside of the through hole (8); the straight rod portion of the threaded sleeve (9) is a hollow thread structure, and the threaded portion of the bolt (10) is connected to the hollow thread of the threaded sleeve (9).

4. A novel cross roller guide rail assembly according to claim 3, characterized in that: The rotating connection assembly also includes a connecting groove (12) formed on the outer wall of the threaded sleeve (9), one end of the inner wall of the connecting groove (12) is connected to a spring (13), one end of the spring (13) is fixedly connected to a moving block (14), an end of the moving block (14) away from the spring (13) is embedded with a rotatable ball (17), and an annular groove (11) for the ball (17) to rotate is formed at the center of the gear (6).

5. A novel cross roller guide rail assembly according to claim 4, characterized in that: A limiting groove (16) is provided on the outer periphery of the moving block (14), and a limiting block (15) slidably connected to the limiting groove (16) is provided on the inner periphery of the connecting groove (12).

Images