Novel inner-angle bearing bush

Abstract

The utility model discloses a novel bearing bush with an inner angle, which comprises an upper bush and a lower bush which are matched with each other and are arranged on a main shaft in a surrounding manner, and is characterized in that the inner angle of the upper bush has a small upper end and a large lower end, and the inner angle of the lower bush has a large upper end and a small lower end; and correspondingly, the inner angle of the lower end of the upper tile and the inner angle of the upper end of the lower tile are respectively matched with the triangular convex edge of the port of the main shaft. Interference is effectively avoided when the bearing bush and the main shaft are assembled.

Description

Technical Field

[0001] This utility model relates to an improved invention of bearing bushes, and more particularly to an improved invention of a new type of bearing bush with an inner angle. Background Technology

[0002] The inner angles of the upper and lower bearing shells of a standard bearing are the same, approximately 0.3 × 45°. This serves to remove burrs, release stress, and improve the appearance. The upper and lower bearing shells are mounted on the spindle, with connecting rods sleeved on the outer sides. The spindle port has a triangular protrusion structure to enhance port strength and also serves to limit the axial movement of the bearing shells. However, the lower end of the inner angle of the upper bearing shell and the upper end of the inner angle of the lower bearing shell will interfere with the triangular protrusion of the spindle port during operation. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a new type of bearing with an inner angle.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: the new type of inner angle bearing includes an upper bearing and a lower bearing, which are mutually fitted and surround the main shaft. The characteristic is that the upper bearing has a smaller upper end and a larger lower end of its inner angle, and the lower bearing has a larger upper end and a smaller lower end of its inner angle. The size of the lower inner angle of the upper bearing and the upper inner angle of the lower bearing are respectively adapted to the triangular protrusion of the main shaft port.

[0005] The upper inner angle of the upper tile is 0.3×45°, and the lower inner angle of the upper tile is 1.2×30°.

[0006] The upper inner angle of the lower tile is 1.2×30°, and the lower inner angle of the lower tile is 0.3×45°.

[0007] The beneficial effect of this utility model is that the improved inner angle bearing bush, by increasing the size of the inner angle at the lower end of the upper bearing bush and the inner angle at the upper end of the lower bearing bush, can fit the triangular protrusion at the spindle port and avoid interference between the two. Attached Figure Description

[0008] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0009] Figure 1 This is a schematic diagram of the upper tile structure of this utility model.

[0010] Figure 2 This is a schematic diagram of the lower tile structure of this utility model.

[0011] Figure 3 This is a schematic diagram of the assembly structure of this utility model. Detailed Implementation

[0012] The accompanying drawings illustrate the structure of this utility model, and further details will be described below with reference to the drawings. In this embodiment, see the attached drawings. Figure 1-3 This novel bearing bush with an inner angle includes an upper bearing 1 and a lower bearing 2, which are fitted together around a main shaft 3. The upper bearing 1 has a smaller upper angle and a larger lower angle, while the lower bearing 2 has a larger upper angle and a smaller lower angle. The size of the lower inner angle 11 of the upper bearing 1 and the upper inner angle 21 of the lower bearing 2 are respectively adapted to the triangular protrusion 31 at the port of the main shaft 3. By increasing the size of the lower inner angle 11 of the upper bearing 1 and the upper inner angle 21 of the lower bearing 2, a clearance space is created between them and the triangular protrusion at the port of the main shaft 3, effectively preventing interference between them.

[0013] As a further improved specific implementation, the upper inner angle 12 of the upper tile 1 is 0.3×45°, and the lower inner angle 11 of the upper tile 1 is 1.2×30°. The inner angle of 0.3×45° means that the chamfer length is 0.3mm and the chamfer included angle is 45°; the inner angle of 1.2×30° means that the chamfer length is 1.2mm and the chamfer included angle is 30°. The size of the inner angle of the upper tile 1 is reasonably set to match the triangular protrusion of the spindle 3 port.

[0014] As a further improved specific implementation, the upper inner angle 21 of the lower tile 2 is 1.2×30°, and the lower inner angle 22 of the lower tile 2 is 0.3×45°. Wherein, the inner angle of 1.2×30° means that the chamfer length is 1.2mm and the chamfer included angle is 30°; the inner angle of 0.3×45° means that the chamfer length is 0.3mm and the chamfer included angle is 45°. The size of the inner angle of the lower tile 2 is reasonably set to match the triangular protrusion of the spindle 3 port.

[0015] In summary, the above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A novel inner angle bearing, comprising an upper bearing and a lower bearing, wherein the upper and lower bearings cooperate to surround a main shaft, characterized in that: The upper tile has a smaller upper angle and a larger lower angle, while the lower tile has a larger upper angle and a smaller lower angle. The corresponding sizes of the lower inner angle of the upper tile and the upper inner angle of the lower tile are adapted to the triangular protrusion of the spindle port.

2. The novel inner angle bearing as described in claim 1, characterized in that: The upper inner angle of the upper tile is 0.3×45°, and the lower inner angle of the upper tile is 1.2×30°.

3. The novel inner angle bearing as described in claim 1, characterized in that: The upper inner angle of the lower tile is 1.2×30°, and the lower inner angle of the lower tile is 0.3×45°.

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