Integrated bearing structure

Abstract

The invention relates to the technical field of transmission structures, in particular to an integrated bearing structure which comprises an outer mounting shaft, an inner rotating part and a ball, the outer mounting shaft is provided with a positioning hole, a ball hole and an oil injection hole, the positioning hole is formed in the end face of the movable connecting end of the outer mounting shaft, a rolling groove is formed in the inner wall of the positioning hole, and the ball hole is communicated with the ball hole. The ball hole is provided with an inner rotating part, the inner rotating part is rotatably sleeved in the positioning hole, a limiting part is arranged in the ball hole, the inner rotating part is provided with a rotary groove, and the rotary groove is arranged corresponding to the rolling groove. Corresponding rotating grooves and mounting mechanisms are arranged on the inner workpiece and the outer workpiece respectively, so that the inner workpiece and the outer workpiece can be sleeved in a relatively rotating manner, an independent traditional bearing structure is replaced, and the device is used for precise instruments, reduces the size and saves the space occupied by an independent bearing mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of transmission structures, and in particular to an integrated bearing structure. Background Art

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support mechanical rotating bodies, reduce the friction coefficient during their movement, and ensure their rotation accuracy. Bearings are generally composed of four parts: outer ring, inner ring, rolling element, and cage.

[0003] According to ISO's grading standards, bearings are divided into: P0, P6, P5, P4, P2, and the grades increase in sequence, where P0 is ordinary precision and the other grades are precision grades. The performance of precision bearings requires the rotating body to have high runout accuracy, high-speed rotation, and small friction and friction changes. Especially for precision equipment, the accuracy fluctuation requirements for precision bearings are more stringent, so the cost is high, and the bearings themselves need to occupy a certain rotation space during use. In the field of aviation and medical equipment, some equipment has a compact structure, and the space provided for the rotating mechanism is small. The number of rotations between the two relatively rotating parts is not frequent, and the number of rotations in the entire life cycle of the equipment is not large. In particular, some equipment has the characteristic of being discarded after use, and the addition of bearing components will cause the equipment to occupy a large space and have low utilization, resulting in a high cost of use. Therefore, a non-load-bearing bearing mechanism that is easy to install, high precision, small space occupation, and low cost is needed to replace traditional bearings. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an integrated bearing structure, comprising an outer mounting shaft, an inner rotating member and a ball, wherein the outer mounting shaft is provided with a positioning hole, a ball hole and an oil filling hole, the positioning hole is provided on the end face of the movable connection end of the outer mounting shaft, the inner wall of the positioning hole is provided with a rolling groove, the inner rotating member is rotatably sleeved in the positioning hole, a limiting member is provided in the ball hole, and a rotating groove is provided on the inner rotating member, and the rotating groove is provided corresponding to the rolling groove.

[0005] Preferably, the rolling groove is an annular groove, and the cross section of the rolling groove is an arc-shaped depression.

[0006] Preferably, the bead hole is arranged radially along the outer mounting shaft, and the bead hole is connected to the rolling groove.

[0007] Preferably, the oil filling hole is arranged on the outer mounting shaft, and the oil filling hole is connected with the rolling groove.

[0008] Preferably, a thread is provided in the bead hole, and the limiting member is a positioning screw, and the positioning screw is threadedly connected in the bead hole.

[0009] Preferably, a conformal protrusion is provided at the bottom of the positioning screw, and a depression is provided in the middle of the conformal protrusion corresponding to the cross-sectional depression shape of the rolling groove.

[0010] Preferably, a plurality of balls are filled between the rolling groove and the revolving groove.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the non-load-bearing bearing structure in which the inner and outer workpieces realize circumferential rotation through sleeve connection plays a role in positioning and rotation, replaces a separate bearing structure, is used in precision instruments, reduces the volume, and saves space. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be discussed below. Obviously, the technical solutions described in conjunction with the drawings are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments and their drawings can be obtained based on the embodiments shown in these drawings without paying creative work.

[0013] Figure 1 It is a three-dimensional schematic diagram of an integrated bearing mechanism of the present invention.

[0014] Figure 2 It is an exploded diagram of an integrated bearing mechanism of the present invention.

[0015] Figure 3 It is a cross-sectional schematic diagram of an integrated bearing mechanism of the present invention.

[0016] Figure 4 It is a schematic cross-sectional view of an outer mounting shaft of an integrated bearing mechanism of the present invention.

[0017] Figure 5 It is a schematic diagram of an inner rotating part of an integrated bearing mechanism of the present invention.

[0018] Figure 6 It is a schematic diagram of a positioning screw of an integrated bearing mechanism of the present invention.

[0019] In the figure: 1-external mounting shaft, 11-positioning hole, 12-rolling groove, 13-ball hole, 14-oil filling hole, 2-inner rotating part, 22-swivel groove, 3-positioning screw, 31-conformal protrusion, 4-ball. DETAILED DESCRIPTION

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

[0021] An embodiment of the present invention provides an integrated bearing mechanism, such as Figures 1 to 6 As shown, it includes an outer mounting shaft 1, an inner rotating member 2 and a ball 4. The outer mounting shaft 1 is provided with a positioning hole 11, a ball hole 13 and an oil injection hole 14. The positioning hole 11 is provided on the end surface of the movable connection end of the outer mounting shaft 1, and the inner rotating member 2 is rotatably sleeved in the positioning hole 11. The inner wall of the positioning hole 11 is provided with a rolling groove 12, which is an annular groove, and the cross section of the rolling groove 12 is an arc-shaped depression.

[0022] The bead hole 13 is arranged radially along the outer mounting shaft 1, and the bead hole 13 is connected to the rolling groove 12. A thread is arranged inside the bead hole 13. The bead hole 13 is threadedly connected with a positioning screw 3 to close the bead hole 13 and fill the gap between the bottom of the rolling groove 12 and the bead hole 13.

[0023] A shape-keeping protrusion 31 is arranged at the bottom of the positioning screw 3 , and a depression corresponding to the cross-sectional depression shape of the rolling groove 12 is arranged in the middle of the shape-keeping protrusion 31 .

[0024] The inner rotating member 2 is provided with a revolving groove 22 , and the revolving groove 22 is provided corresponding to the rolling groove 12 .

[0025] A plurality of the balls 4 are installed between the rolling groove 12 and the revolving groove 22 to fill the gap between the rolling groove 12 and the revolving groove 22 , and the balls 4 can rotate and move freely in the gap between the two.

[0026] During installation, the inner rotating member 2 is sleeved into the outer mounting shaft 1, the revolving groove 22 is aligned with the rolling groove 12, and the balls 4 are placed in sequence through the ball holes 13, and the sealing of the ball holes 13 is completed by screwing in the positioning screws 3.

[0027] In Example 2, the oil filling hole 14 is provided on the outer mounting shaft 1 , the oil filling hole 14 is communicated with the rolling groove 12 , and lubricating grease is injected through the oil filling hole 14 .

[0028] This design is a non-load-bearing type bearing structure for the circumferential rotation of the inner and outer workpieces, which plays the role of positioning and rotation, directly connects the two relatively rotating workpieces, eliminates the separate bearing structure, and reduces space occupancy.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive from any point of view. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An integrated bearing structure, characterized in that: The invention comprises an outer mounting shaft (1), an inner rotating member (2) and a ball (4); the outer mounting shaft (1) is provided with a positioning hole (11), a ball hole (13) and an oil filling hole (14); the positioning hole (11) is provided on the end surface of the movable connection end of the outer mounting shaft (1); the inner wall of the positioning hole (11) is provided with a rolling groove (12); the inner rotating member (2) is rotatably sleeved in the positioning hole (11); a limit member is provided in the ball hole (13); the inner rotating member (2) is provided with a revolving groove (22); the revolving groove (22) is provided corresponding to the rolling groove (12).

2. The integrated bearing structure according to claim 1, characterized in that: The rolling groove (12) is an annular groove, and the cross section of the rolling groove (12) is an arc-shaped depression.

3. The integrated bearing structure according to claim 1, characterized in that: The bead hole (13) is arranged radially along the outer mounting shaft (1), and the bead hole (13) is connected to the rolling groove (12).

4. The integrated bearing structure according to claim 1, characterized in that: The oil injection hole (14) is arranged on the outer mounting shaft (1), and the oil injection hole (14) is connected to the rolling groove (12).

5. The integrated bearing structure according to claim 1, characterized in that: The bead hole (13) is provided with a thread, the limiting member is a positioning screw (3), and the positioning screw (3) is threadedly connected to the bead hole (13).

6. The integrated bearing structure according to claim 5, characterized in that: The bottom of the positioning screw (3) is provided with a conformal protrusion (31), and the middle of the conformal protrusion (31) is provided with a depression corresponding to the cross-sectional depression shape of the rolling groove (12).

7. The integrated bearing structure according to claim 1, characterized in that: A plurality of the balls (4) are filled between the rolling groove (12) and the revolving groove (22).

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