CN208823000U

CN208823000U - A kind of noise reduction, anti-resorption dental drill component

Info

Publication number: CN208823000U
Application number: CN201820623839.4U
Authority: CN
Inventors: 刘庆俊
Original assignee: Da Rui Bio Tech Ltd Henan
Current assignee: Da Rui Bio Tech Ltd Henan
Priority date: 2018-04-27
Filing date: 2018-04-27
Publication date: 2019-05-07
Anticipated expiration: 2028-04-27

Abstract

The utility model discloses a kind of noise reduction, anti- resorption dental drill component, belong to dental equipment technical field, including shell and through the machine mandrel of the shell, the machine core outer shaft sleeve is equipped with turbine, the identical rolling bearing of structure is respectively arranged with above and below the turbine, the bottom end of the machine mandrel is provided with vehicle needle, the shockproof part being fabricated from a flexible material is provided with outside the rolling bearing, the shockproof part by a ring horizontal plane and cylindrical heavily fortified point face directly and be integrally formed, the horizontal plane coats the end face of the rolling bearing, the vertical plane is wrapped in the outer circumference surface of the rolling bearing.On the one hand bearing bring shakes the utility model when reducing turbo driving, effectively plays the effect of noise reduction, is on the other hand effectively prevented from the pollution to dental handpiece, ensured many patients using safe.

Description

A kind of noise reduction, anti-resorption dental drill component

Technical field

The utility model relates to dental equipment technical field, in particular to a kind of noise reduction, anti-resorption dental drill component.

Background technique

High-speed dental drill is a kind of common medical instrument of the department of stomatology, its working principle is that using high pressure air pressure blow turbine after And run at high speed with motor-car needle, revolving speed dispels dental caries bad tissue, or preparation usually at 200,000 revs/min or more, to cut tooth body Baking-ceramic tooth, it can also be used to artificial tooth of polishing etc..

The various types of high-speed dental drill, in addition in quality other than difference, there are also miscellaneous different appearances, with And diversified subsidiary function, such as the mode of loading-unloading vehicle needle just has thimble-type, tightens formula and push button；Cooling mode has It is spraying with single hole, diplopore is spraying, three holes are spraying and four holes are spraying；Have with illumination functions；Have with blowing function；There is band anti- Resorption function；Have with quick connector；Also vary in terms of torque, also specialize in backteeth and children use it is mini Head, even there are also automatically pressure limitings etc. for other aspects.

Since the working environment of dental handpiece is the adverse circumstances such as more dust, humidity, dental handpiece must satisfy height Revolving speed, high-precision, low noise and the requirement of long-life, wherein dental drill bearings play a key role in dental drill component, bearing As vulnerable part, easily there is the problem that noise is big, the service life is short, directly affects the service life of dental handpiece.

In addition, dental handpiece is needed repeatedly, is repeatedly used, since dental high-speed cell phone uses high pressure draught as power Source when mobile phone is shut down in the oral cavity of patient, i.e., forms instantaneous negative pressure, this moment, disease population in hand machine head inner cavity when cutting wind regime Blood, purulence, phlegm in chamber etc. will be inhaled into hand machine head, cause the pollution to surgical instrument, when dentist is using same dentistry When mobile phone is different dental patient's treatment, if without thorough disinfection, the caused dirt to mobile phone in previous patient treatment procedure Dye will jeopardize patient finally.

Utility model content

The utility model provides a kind of high-speed dental drill component, solve noise that existing dental handpiece easily appears in it is big, Service life short problem.

In order to solve the above technical problems, the technical solution adopted by the utility model is:

A kind of noise reduction, anti-resorption dental drill component, including shell and through the machine mandrel of the shell, the machine core outer shaft sleeve Equipped with turbine, the identical rolling bearing of structure is respectively arranged with above and below the turbine, the bottom end of the machine mandrel is set It is equipped with vehicle needle, is provided with the shockproof part being fabricated from a flexible material outside the rolling bearing, the shockproof part is by level in a ring Face and cylindrical heavily fortified point are faced directly and are integrally formed, and the horizontal plane coats the end face of the rolling bearing, the vertical plane package In the outer circumference surface of the rolling bearing, the internal diameter of the horizontal plane is greater than the internal diameter of the rolling bearing inner ring, is less than described The outer diameter of rolling bearing inner ring, the internal diameter that the heavily fortified point is faced directly are less than the outer diameter of the housing washer.

Wherein it is preferred to be provided with cyclic annular convex block on the outer circumference surface that the heavily fortified point is faced directly.

Wherein it is preferred to which the lower end of the shell is provided with rear cover, it is provided with outside the shell for component to be installed on Locking ball in dental handpiece casing.

Wherein it is preferred to which the bearing ball of the rolling bearing is Si₃N₄Ceramic Balls.

Wherein it is preferred to which the holder of the rolling bearing is polyimide holder.

Wherein it is preferred to which the rolling bearing and the machine mandrel are interference fitted, magnitude of interference is within 1 μm.

The utility model has the beneficial effects that

The utility model is provided with shockproof part outside rolling bearing, bearing bring when on the one hand reducing turbo driving Vibration, effectively plays the effect of noise reduction, improves the service life of high speed turbine mobile phone；On the other hand, when turbine stops operating When, head inner cavity forms instantaneous negative pressure, makes the shockproof place being fabricated from a flexible material being attached on bearing inner race tightly, to play The effect of sealing is effectively prevented from pollution of the patient to dental handpiece, ensured many patients using safe.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the structural schematic diagram of the utility model dental component.

In figure, 1. shells, 2. machine mandrels, 3. turbines, 4. rolling bearings, 5. vehicle needles, 6. shockproof parts, 6-1. horizontal plane, 6- 2. vertical plane, 7. cyclic annular convex blocks, 8. rear covers, 9. locking balls

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

As shown in Figure 1, the present embodiment provides a kind of noise reductions, anti-resorption dental drill component, including shell 1 and through shell 1 Machine mandrel 2, machine mandrel 2 are set with turbine 3 outside, the identical rolling bearing 4 of structure are respectively arranged with above and below turbine 3, The bottom end of machine mandrel 2 is provided with vehicle needle 5.It is provided with the shockproof part 6 being fabricated from a flexible material outside rolling bearing 4, shockproof part 6 is by being in The horizontal plane 6-1 and cylindrical heavily fortified point of annular are faced directly and are integrally formed, and horizontal plane 6-1 coats the end face of the rolling bearing 4, are erected Face the outer circumference surface that 6-2 is wrapped in rolling bearing 4 directly, the internal diameter of horizontal plane 6-1 is greater than the internal diameter of 4 inner ring of rolling bearing, Less than the outer diameter of 4 inner ring of rolling bearing, the internal diameter that heavily fortified point is faced directly is less than the outer diameter of 4 outer ring of rolling bearing.When turbine 3 rotates, Internal pressure is greater than casing external pressure, so that flexible ring plate be made to be bent outwardly, air is able to be input to casing internal.Work as turbine 3 when stopping operating, i.e., forms instantaneous negative pressure in hand machine head inner cavity, so that horizontal plane 6-1 is restored to the original state, is tightly attached to rolling bearing 4 On inner ring, play the role of sealing, dirt is prevented to be drawn back into shell, efficiently solves dental handpiece and easily cause cross-infection Problem.

Wherein, it is provided with cyclic annular convex block 7 on the hard outer circumference surface faced directly, bearing mounted in pairs is in the both ends of turbine 3, bearing It is radial to be positioned by cyclic annular convex block 7, it is possible to reduce vibration and noise, and can automatic central adjusting, reduce to shell machining accuracy It is required that.

Wherein, the lower end of shell is provided with rear cover 8, is provided with outside shell for component to be installed in dental handpiece casing Locking ball 9.Bearing is axial with the positioning of rear cover 8, and applies certain axial preload, the axial direction of Lai Tigao dental drill ball bearing Rigidity reduces vibration, reduces caused axial float phenomenon when high-speed bearing rotation, and prevent bearing generation from screaming.

Since high-speed dental drill component is dust is more, works under mal-condition of humid environment, this requires dental drill axis It holds with good corrosion resistance and wearability, to solve the above problems, the bearing ball of the utility model rolling bearing 4 is Si₃N₄ Ceramic Balls.Si₃N₄Ceramic Balls have the characteristics that small hardness height, centrifugal force, corrosion-resistant and fretting wear, thermal expansion coefficient are small, furthermore It is low that it absorbs heat, cooling to require lower, can operate in the environment of poor lubrication, can effectively improve the longevity of dental drill bearings Life.

In addition, the holder of rolling bearing 4 is polyimide holder.Polyimide is a kind of high-temperature-resistant thermoplastic engineering Plastics are synthesized by three mellic acids and diamine compound.The material can at a temperature of 260 DEG C normal use, expanded with small line Coefficient and creep resisting ability just start to deform when to 280 DEG C, the part made of it than Other Engineering plastics with more resistance to compression and Impact resistance.

Wherein, rolling bearing 4 and machine mandrel 2 are interference fitted, and magnitude of interference is within 1 μm.Bearing bore diameter and axis use interference Cooperation, magnitude of interference is within 1 μm.Lesser magnitude of interference not only prevents the deformation of bearing ring and subtracting for bearing radial gap It is few, and will not influence the high speed performance of bearing.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection scope within.

Claims

1. a kind of noise reduction, anti-resorption dental drill component, including shell and through the machine mandrel of the shell, the machine core outer shaft sleeve dress There is turbine, the identical rolling bearing of structure, the bottom end setting of the machine mandrel are respectively arranged with above and below the turbine There is vehicle needle, it is characterised in that: the shockproof part being fabricated from a flexible material is provided with outside the rolling bearing, the shockproof part is by being in ring The horizontal plane of shape and cylindrical heavily fortified point are faced directly and are integrally formed, and the horizontal plane coats the end face of the rolling bearing, described perpendicular Face the outer circumference surface for being wrapped in the rolling bearing directly, the internal diameter of the horizontal plane is greater than the internal diameter of the rolling bearing inner ring, Less than the outer diameter of the rolling bearing inner ring, the internal diameter that the heavily fortified point is faced directly is less than the outer diameter of the housing washer.

2. a kind of noise reduction according to claim 1, anti-resorption dental drill component, it is characterised in that: the outer circle that the heavily fortified point is faced directly Cyclic annular convex block is provided on circumferential surface.

3. a kind of noise reduction according to claim 1, anti-resorption dental drill component, it is characterised in that: the lower end of the shell is set It is equipped with rear cover, the locking ball for being installed on component in dental handpiece casing is provided with outside the shell.

4. a kind of noise reduction according to claim 1, anti-resorption dental drill component, it is characterised in that: the axis of the rolling bearing Holding ball is Si₃N₄Ceramic Balls.

5. a kind of noise reduction according to claim 1, anti-resorption dental drill component, it is characterised in that: the guarantor of the rolling bearing Gripping member is polyimide holder.

6. a kind of noise reduction according to claim 1, anti-resorption dental drill component, it is characterised in that: the rolling bearing and institute Machine mandrel's interference fit is stated, magnitude of interference is within 1 μm.