High-performance bearing for dental handpiece

Abstract

A high-performance bearing for a dental handpiece comprises a bearing inner ring and a bearing outer ring, a retainer is arranged between the bearing inner ring and the bearing outer ring, a ball pocket is machined on the retainer, a rolling body is installed in the ball pocket, and channels for containing the rolling body are machined in the side faces of the bearing inner ring and the bearing outer ring. The bottom part of the ball pocket of the retainer faces the tuyere side of the dental handpiece, a dustproof cover is arranged between the bearing inner ring and the bearing outer ring, the dustproof cover blocks the bottom part of the ball pocket of the retainer on the tuyere side of the dental handpiece, and the rolling body and the channel adopt a channel deviation design to avoid the dustproof cover. The mounting position of the dustproof cover is changed from the working side to the air port side, so that high-speed air can be effectively blocked, an air duct is changed, air flows out from other parts of a mobile phone, the acting force of the air on the retainer is reduced, the vortex effect is effectively improved, the stability of the bearing is improved, the influence of the air on lubricating grease is reduced, and the loss speed of the lubricating grease is obviously reduced; the lubricating effect is guaranteed, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a high-performance bearing for a dental mobile phone. Background Art

[0002] Dental handpiece is one of the main components of dental comprehensive treatment machine, used for cleaning teeth with caries in dental clinic. Dental handpiece is driven by air source, such as Figure 2 As shown, the existing dental handpiece bearing is limited by the size of the dental handpiece, and the dental handpiece bearing adopts a single-sided dust cover. In the existing design, the dust cover faces the working side of the dental handpiece, and the retaining frame in the dental handpiece bearing faces the air outlet side of the air source. At the same time, the bearing adopts a groove design, that is, the inner and outer ring grooves and rolling elements of the bearing are centered.

[0003] However, this design will bring the following shortcomings: 1. Since the bottom side of the cage faces the air outlet, there is no obstruction design on the air outlet side and the gap is large. When the mobile phone is working, the wind force directly acts on the high-speed rotating cage, causing the cage to produce a vortex effect. The vortex effect is a key factor affecting the stability of the cage. When the vortex of the cage intensifies, the frequency of friction between it and the ring increases, which can easily have a negative impact on important performance of the bearing such as vibration, noise, and service life; 2. The high-speed flowing wind blows directly into the bearing, which will cause the grease inside the bearing to be lost quickly, significantly reducing the service life of the bearing. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a high-performance bearing for a dental mobile phone in view of the deficiencies of the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A high-performance bearing for a dental handpiece comprises an inner ring and an outer ring of the bearing, a retaining frame is arranged between the inner ring and the outer ring of the bearing, a ball pocket is processed on the retaining frame, a rolling body is installed in the ball pocket, and grooves for accommodating the rolling body are processed on the side surfaces of the inner ring and the outer ring of the bearing, the bottom of the ball pocket of the retaining frame faces the air outlet side of the dental handpiece, a dust cover is installed between the inner ring and the outer ring of the bearing, the dust cover blocks the bottom of the ball pocket of the retaining frame on the air outlet side of the dental handpiece, and the rolling body and the groove adopt a groove offset design to avoid the dust cover.

[0007] Furthermore, a positioning groove is processed on the outer ring of the bearing, the outer ring of the dust cover is arranged on the positioning groove, a clamping groove is processed on the side of the positioning groove, and a retaining spring is installed in the clamping groove to fix the dust cover.

[0008] Furthermore, the dust cover adopts a flat plate structure.

[0009] Compared with the prior art, the high-performance bearing for dental mobile phone of the present invention has the following beneficial effects:

[0010] 1. Changing the installation position of the dust cover from the working side to the air outlet side can effectively block high-speed wind and change the air duct, so that the wind flows out from other parts of the mobile phone instead of passing through the bearing. This reduces the force of the wind on the cage, effectively improves the vortex effect, improves the stability of the bearing, reduces the impact of wind on the grease, significantly reduces the loss rate of grease, ensures the lubrication effect, and increases the service life of the bearing.

[0011] 2. The groove design is changed to a groove offset design, that is, the inner and outer ring grooves and rolling elements are offset to the working side of the mobile phone, which solves the problem of insufficient space on the air outlet side. Under the premise of ensuring the bearing performance, the internal space of the bearing is reasonably and effectively used, so that the dust cover can be installed on the air outlet side. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the original dental handpiece bearing;

[0014] Among them, 1. Bearing inner ring, 2. Bearing outer ring, 3. Cage, 4. Rolling element, 5. Channel, 6. Dust cover, 7. Positioning groove, 8. Circlip. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below.

[0016] like Figure 1 As shown, a high-performance bearing for a dental mobile phone comprises a bearing inner ring 1 and a bearing outer ring 2, a retaining frame 3 is arranged between the bearing inner ring 1 and the bearing outer ring 2, a ball pocket is processed on the retaining frame 3, and a rolling body 4 is installed in the ball pocket, and a groove 5 for accommodating the rolling body 4 is processed on the side surfaces of the bearing inner ring 1 and the bearing outer ring 2, the bottom of the ball pocket of the retaining frame 3 faces the air outlet side of the dental mobile phone, and a dust cover 6 is installed between the bearing inner ring 1 and the bearing outer ring 2, and the dust cover 6 blocks the bottom of the ball pocket of the retaining frame 3 on the air outlet side of the dental mobile phone. Since the dust cover 6 and the bearing inner ring 1 and the bearing outer ring 2 cannot be completely sealed, the bottom of the ball pocket of the retaining frame 3 is directed toward the air outlet side of the dental mobile phone to increase wind resistance, which can reduce the impact of incoming wind on the rolling body 4 on the retaining frame 3.

[0017] Since the dust cover 6 is moved to the air outlet side of the dental mobile phone, in order to ensure that the rolling element can be installed, the rolling element 4 and the channel 5 adopt a groove bias design, that is, the rolling element 4 and the channel 5 are biased to one side of the radial center axis of the bearing, so as to avoid the dust cover 6 and prevent interference with the dust cover 6. At the same time, the dust cover 6 adopts a flat plate structure to reduce the space occupied by the dust cover 6 in the bearing.

[0018] The bearing outer ring 2 is processed with a positioning groove 7, the outer ring of the dust cover 6 is set on the positioning groove 7, the side of the positioning groove 7 is processed with a clamping groove, and a retaining spring 8 is installed in the clamping groove to fix the dust cover 6.

[0019] The present invention is not limited to the embodiments described. Those skilled in the art may make some modifications or changes without departing from the spirit or scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A high-performance bearing for a dental handpiece, comprising an inner ring and an outer ring, a retainer disposed between the inner and outer rings, a ball pocket machined on the retainer, a rolling element mounted within the ball pocket, and grooves for accommodating the rolling element machined on the sides of the inner and outer rings, characterized in that: The bottom of the ball pocket of the retainer faces the air outlet side of the dental mobile phone, and a dust cover is installed between the inner ring of the bearing and the outer ring of the bearing. The dust cover blocks the bottom of the ball pocket of the retainer on the air outlet side of the dental mobile phone, and the rolling element and the channel adopt a groove offset design to avoid the dust cover.

2. A high-performance bearing for a dental handpiece according to claim 1, characterized in that: A positioning groove is processed on the outer ring of the bearing, the outer ring of the dust cover is arranged on the positioning groove, a clamping groove is processed on the side of the positioning groove, and a retaining spring is installed in the clamping groove to fix the dust cover.

3. The high-performance bearing for a dental handpiece according to claim 1, characterized in that: The dust cover adopts a flat plate structure.

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