Shock-resistant linear bearing

Abstract

A shock-resistant linear bearing relates to the technical field of bearings and comprises an outer ring, an inner ring, balls, sealing gaskets and support frames, the balls are distributed on the inner ring, penetrate through the inner wall of the inner ring and are rotatably connected with the inner ring, the sealing gaskets are arranged at two ends of the outer ring and the inner ring, and the support frames are distributed between the outer ring and the inner ring. The supporting frame is composed of a connecting plate, an elastic rod and a sliding block, the rubber elastic rod is arranged on the inner face of the connecting plate, and the sliding block is arranged at the end of the elastic rod. The supporting frame is arranged between the outer ring and the inner ring, external impact is buffered, and normal rolling of the balls on the inner ring is protected; sliding blocks are arranged at the lower ends of the supporting frames, so that the inner ring axially moves in the outer ring conveniently, and the flexibility of the bearing is improved; and the balls are arranged in the connecting grooves, so that the balls are protected, and the inner wall of the outer ring is prevented from extruding the balls.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing technical field especially is related to a kind of impact resistance linear bearing. BACKGROUND

[0002] Linear bearing is small in friction, and it is relatively stable, does not change with bearing speed, can obtain high precision. The smooth linear motion is high, so it is widely used in precision equipment, but linear bearing is easily damaged after being subjected to external impact, affects its load capacity and motion precision, affects the stability and safety of equipment operation, linear bearing is subjected to external impact, impact force is buffered, then the above-mentioned situation can be effectively alleviated, so we propose a kind of impact resistance linear bearing. SUMMARY

[0003] In order to overcome the deficiency in the background art, the utility model discloses an impact resistance linear bearing, which sets up the ball, the sealing gasket and the support frame between the outer ring and the inner ring to buffer the external impact and protect the normal rolling of the ball on the inner ring.

[0004] In order to realize the utility model purposes, the utility model adopts the following technical scheme:

[0005] An impact resistance linear bearing, comprising an outer ring, an inner ring, a ball, a sealing gasket and a support frame, the inner ring is distributed with the ball, each ball passes through the inner wall of the inner ring, and is rotatably connected with the inner ring, the outer ring and the inner ring are both provided with the sealing gasket, the support frame is distributed between the outer ring and the inner ring, the support frame is composed of a connecting plate, an elastic rod and a sliding block, the inner surface of the connecting plate is provided with the rubber elastic rod, and the end of the elastic rod is provided with the sliding block.

[0006] At least one T-shaped groove is arranged on the inner wall of the outer ring in the axial direction, each T-shaped groove is arranged in a circular equidistant array with the axis of the outer ring as the center, and each T-shaped groove is provided with the connecting plate.

[0007] At least one connecting groove is arranged on the side surface of the inner ring in the axial direction, each connecting groove is arranged in a circular equidistant array with the axis of the inner ring as the center, and a plurality of fixing holes are arranged in an equidistant array on the bottom surface of each connecting groove, the ball is arranged in the connecting groove, the ball is arranged correspondingly with the fixing hole, and the spherical surface of the ball passes through the fixing hole, each connecting groove is provided with a retainer, the retainer is distributed with a limiting hole, the limiting hole is arranged correspondingly with the ball, the retainer is pressed on the ball, and the spherical surface of the ball passes through the corresponding limiting hole.

[0008] At least one sliding groove is arranged on the side surface of the inner ring in the axial direction, each sliding groove is arranged in a circular equidistant array with the axis of the inner ring as the center, the sliding groove and the connecting groove are arranged alternately, and the sliding groove is arranged correspondingly with the T-shaped groove.

[0009] The connecting plate interior surface is provided with at least one elastic rod, each elastic rod is equidistantly arrayed, the lower end of each elastic rod penetrates through the T-shaped slot, and the lower end of each elastic rod is provided with a sliding block abutting against the bottom surface of the corresponding sliding slot.

[0010] The connecting slot is provided with a clamping slot at two ends, and the clamping slot is provided with a limiting slot in communication with the clamping slot at two sides.

[0011] The retaining frame is provided with a limiting plate at two ends, and the limiting plate is arranged in the adjacent limiting slot at two sides.

[0012] The anti-impact linear bearing has high practicability and is very convenient to use, the support frame is arranged between the outer ring and the inner ring to buffer external impact and protect normal rolling of the balls on the inner ring, the sliding block is arranged at the lower end of the support frame to facilitate axial movement of the inner ring in the outer ring and increase flexibility of the bearing, and the balls are arranged in the connecting slots to protect the balls from extrusion by the inner wall of the outer ring. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0014] Figure 2 It is a sectional view of the utility model;

[0015] Figure 3 It is an outer ring sectional view of the utility model;

[0016] Figure 4 It is a three-dimensional structure schematic view of the support frame of the utility model;

[0017] Figure 5 It is a three-dimensional structure schematic view of the inner ring of the utility model;

[0018] Figure 6 It is an inner ring sectional view of the utility model;

[0019] In the drawing: 1, outer ring; 2, inner ring; 3, ball; 4, sealing gasket; 5, support frame; 6, connecting slot; 7, retaining frame; 8, T-shaped slot; 9, connecting plate; 10, elastic rod; 11, sliding block; 12, fixed hole; 13, limiting plate; 14, limiting hole; 15, clamping slot; 16, limiting slot; 17, sliding slot. DETAILED DESCRIPTION

[0020] The utility model can be explained in detail through the following embodiments, and the purpose of the utility model is to protect all technical improvements within the scope of the utility model.

[0021] Combined with the attached Figures 1-6The utility model provides an anti-impact straight line bearing, including outer ring 1, inner ring 2, ball 3, sealing pad 4 and support frame 5, and the inner ring 2 is distributed with ball 3, and each ball 3 passes through the inner wall of inner ring 2 and is rotatably connected with inner ring 2, and the both ends of outer ring 1 are equipped with sealing pad 4, and the support frame 5 is distributed between outer ring 1 and inner ring 2, and the support frame 5 is formed by connecting plate 9, elastic rod 10 and sliding block 11, the inside face of connecting plate 9 is equipped with rubber elastic rod 10, the end of elastic rod 10 is equipped with sliding block 11, and the support frame 5 buffers the impact force that outer ring 1 bears.

[0022] At least one T-shaped groove 8 is arranged on the inner wall of the outer ring 1 in the axial direction, each T-shaped groove 8 is arranged in a circular equidistant array with the axis of the outer ring 1 as the center, and each T-shaped groove 8 is provided with a connecting plate 9.

[0023] At least one connecting groove 6 is arranged on the side surface of the inner ring 2 in the axial direction, each connecting groove 6 is arranged in a circular equidistant array with the axis of the inner ring 2 as the center, and a plurality of fixing holes 12 are arranged in an equidistant array on the bottom surface of each connecting groove 6, the balls 3 are arranged in the connecting grooves 6, the balls 3 are arranged correspondingly to the fixing holes 12, and the spherical surface of the balls 3 passes through the fixing holes 12, each connecting groove 6 is provided with a retainer 7, the retainer 7 is arranged in an equidistant array on the connecting groove 6, and the retainer 7 is arranged on the balls 3, the spherical surface of the balls 3 passes through the corresponding limiting holes 14, and the balls 3 rotate in the fixing holes 12 and the limiting holes 14.

[0024] At least one sliding groove 17 is arranged on the side surface of the inner ring 2 in the axial direction, each sliding groove 17 is arranged in a circular equidistant array with the axis of the inner ring 2 as the center, the sliding grooves 17 are arranged alternately with the connecting grooves 6, and the sliding grooves 17 are arranged correspondingly to the T-shaped grooves 8.

[0025] The inside face of the connecting plate 9 is provided with at least one elastic rod 10, each elastic rod 10 is arranged in an equidistant array, the lower end of the elastic rod 10 passes through the T-shaped groove 8, the support frame 5 buffers the external impact force through the elastic rod 10, so that the balls 3 on the inner ring 2 are not impacted, and the lower end of each elastic rod 10 is provided with a sliding block 11, and the sliding block 11 abuts against the bottom surface of the corresponding sliding groove 17.

[0026] The connecting groove 6 is provided with a clamping groove 15 at both ends, and the clamping groove 15 is provided with a limiting groove 16 communicating with the clamping groove 15 at both sides.

[0027] The retainer 7 is provided with a limiting plate 13 at both ends, the limiting plate 13 is arranged in the adjacent limiting groove 16 at both sides, and the retainer 7 is fixed in the connecting groove 6 through the cooperation of the limiting plate 13 and the limiting groove 16.

[0028] The impact-resistant linear bearing is installed on the cylindrical shaft matched with the linear bearing in use, the balls 3 are attached to the surface of the cylindrical shaft, so that the linear bearing can move linearly on the cylindrical shaft, when the outer ring 1 is impacted by external impact force, the outer ring 1 conducts the impact force, and the connecting plate 9 installed thereon conducts the impact force to the elastic rod 10, the elastic rod 10 buffers the impact force, avoids the outer ring 1 from directly impacting the inner ring 2, and has less influence on the balls 3, and protects the balls 3 on the inner ring 2 from normal rolling.

[0029] The utility model is not detailed part for prior art, although the utility model is specifically demonstrated and introduced in combination with preferred implementation scheme, there are many specific implementation technical scheme methods and approaches, the above only is the preferred implementation mode of the utility model, but the skilled person in the art should understand that, in the form and the details can make various changes to the utility model without departing from the spirit and scope of the utility model defined in the appended claims, all are the protection scope of the utility model.

Claims

1. An impact-resistant linear bearing, comprising an outer ring (1), an inner ring (2), balls (3), a sealing gasket (4), and a support frame (5), wherein balls (3) are distributed on the inner ring (2), each ball (3) passing through the inner wall of the inner ring (2) and rotatably connected to the inner ring (2), and sealing gaskets (4) are provided at both ends of the outer ring (1) and the inner ring (2), characterized in that: Support frames (5) are distributed between the outer ring (1) and the inner ring (2), the support frames (5) are composed of connecting plates (9), elastic rods (10) and sliding blocks (11), the inner surface of the connecting plate (9) is provided with the rubber elastic rod (10), and the end of the elastic rod (10) is provided with the sliding block (11).

2. The impact-resistant linear bearing of claim 1, wherein: At least one T-shaped groove (8) is arranged axially on the inner wall of the outer ring (1), and each T-shaped groove (8) is arranged in a circular equidistant array with the axis of the outer ring (1) as the center, and each T-shaped groove (8) is provided with a connecting plate (9).

3. The impact-resistant linear bearing of claim 1, wherein: At least one connecting groove (6) is arranged axially on the side surface of the inner ring (2), each connecting groove (6) is arranged in a circular equidistant array with the axis of the inner ring (2) as the center, and the bottom surface of each connecting groove (6) is arranged in an equidistant array with a fixing hole (12), the connecting groove (6) is arranged in the connecting groove (6), the ball (3) is arranged corresponding to the fixing hole (12), and the ball (3) is arranged corresponding to the fixing hole (12). The spherical surface of the ball (3) passes through the fixing hole (12), each connecting groove (6) is provided with a retainer (7), the retainer (7) is provided with a limiting hole (14), the limiting hole (14) is arranged corresponding to the ball (3), the retainer (7) is pressed on the ball (3), and the spherical surface of the ball (3) passes through the corresponding limiting hole (14).

4. The impact-resistant linear bearing of claim 3, wherein: At least one sliding groove (17) is arranged axially on the side surface of the inner ring (2), each sliding groove (17) is arranged in a circular equidistant array with the axis of the inner ring (2) as the center, the sliding groove (17) is arranged alternately with the connecting groove (6), and the sliding groove (17) is arranged corresponding to the T-shaped groove (8).

5. The impact-resistant linear bearing of claim 2, wherein: The inner surface of the connecting plate (9) is provided with at least one elastic rod (10), each elastic rod (10) is arranged in an equidistant array, the lower end of the elastic rod (10) passes through the T-shaped groove (8), and the lower end of each elastic rod (10) is provided with a sliding block (11). The sliding block (11) abuts against the bottom surface of the corresponding sliding groove (17).

6. The impact-resistant linear bearing of claim 4, wherein: The connecting groove (6) is provided with a clamping groove (15) at both ends, and the clamping groove (15) is provided with a limiting groove (16) communicating with the clamping groove (15) on both sides.

7. The impact-resistant linear bearing of claim 3, wherein: The retainer (7) is provided with a limiting plate (13) at both ends, and the limiting plate (13) is arranged in the adjacent limiting groove (16) on both sides.

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