WO2013053298A1 - 一种牙钻机头 - Google Patents

一种牙钻机头 Download PDF

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Publication number
WO2013053298A1
WO2013053298A1 PCT/CN2012/082406 CN2012082406W WO2013053298A1 WO 2013053298 A1 WO2013053298 A1 WO 2013053298A1 CN 2012082406 W CN2012082406 W CN 2012082406W WO 2013053298 A1 WO2013053298 A1 WO 2013053298A1
Authority
WO
WIPO (PCT)
Prior art keywords
rubber
dental drill
ring
wind wheel
head
Prior art date
Application number
PCT/CN2012/082406
Other languages
English (en)
French (fr)
Inventor
刘晓霞
张春
Original Assignee
郑州泽正技术服务有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN2011103249192A external-priority patent/CN103040531A/zh
Priority claimed from CN201210183800.2A external-priority patent/CN103453392B/zh
Priority claimed from CN201210354925.7A external-priority patent/CN103654975B/zh
Application filed by 郑州泽正技术服务有限公司 filed Critical 郑州泽正技术服务有限公司
Priority to EP12840662.6A priority Critical patent/EP2767253A4/en
Priority to JP2014534930A priority patent/JP6164618B2/ja
Priority to RU2014118646/14A priority patent/RU2573630C9/ru
Priority to CN201280050601.2A priority patent/CN104023666B/zh
Priority to US13/685,214 priority patent/US10064698B2/en
Publication of WO2013053298A1 publication Critical patent/WO2013053298A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/02—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools
    • A61C1/05—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools with turbine drive
    • A61C1/057—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools with turbine drive with means for preventing suction effect in turbine after deactivation of the drive air
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A61C1/088—Illuminating devices or attachments

Definitions

  • the present invention relates to the main grinding tool used in the dental industry - the dental drill, especially the nose of the turbo drill. Background technique
  • a head of a dental air-cutting device a head is provided at a tip end thereof, and a necessary cutting tool member is mounted in the head, including a rotor shaft of a cutting tool and two rotating shafts.
  • the bearing and the impeller disposed between the two bearing portions cause the high-pressure air supplied from the air supply passage disposed in the handle portion of the handpiece to impinge on the impeller to rotate the cutting tool.
  • the wind turbine shaft and the blade of the existing disposable dental drill are all integrally molded parts, such as the invention patent of Patent No. 200520045733. 3, the wind wheel shaft and the bur are matched by the three-petal spring; the invention patent application of the application No. 200910001394.
  • the needle hole of the wind wheel shaft is set to a spline shape, and the needle bar is clamped by the elastic force of the plastic.
  • the patent sets a windshield original piece to increase the moment of inertia, and other disposable drills also select a pin hole and With the needle bar interference fit, etc., these structures, loading and unloading burs must be very troublesome with the help of special tools.
  • X invention patent although it is also a pressing drill, specifically a ⁇ -shaped chuck is arranged in the wind wheel shaft, the burr is clamped by the ⁇ -shaped chuck, the connecting rod of the ⁇ -shaped chuck protrudes from the wind wheel shaft and fixes the baffle A disc spring is disposed between the shaft end of the outer circumference of the connecting rod and the baffle, and the disc spring provides a clamping force.
  • a pressing drill specifically a ⁇ -shaped chuck is arranged in the wind wheel shaft, the burr is clamped by the ⁇ -shaped chuck, the connecting rod of the ⁇ -shaped chuck protrudes from the wind wheel shaft and fixes the baffle
  • a disc spring is disposed between the shaft end of the outer circumference of the connecting rod and the baffle, and the disc spring provides a clamping force.
  • the imbalance is caused by the difference in accuracy, causing vibration, generating noise, and not meeting the standard.
  • the above two types of dental drills for loading and unloading burs are more complicated in structure, more unbalanced during rotation, and more noisy.
  • the current use of metal dental drills is directly dependent on processing accuracy, and the maximum price difference is 100 times.
  • the nose since the nose extends into the inlet cavity, when the high-pressure air stops supplying, the impeller continues to rotate at a high speed with inertia, and a negative pressure is generated in the nose, and external dirt is sucked into the air supply passage of the machine head. The phone is sucked back, but it is prevented from sucking back at the insertion point of the bur.
  • the space is very small, the components used are very precise, which increases the cost.
  • the LED lights on the front of the dental handpiece are currently located on the neck of the phone, so that when used, the lighting effect is not ideal due to the angle problem. If the LED light is placed directly under the dental handpiece, since the LED light and the switch are two separate devices, the space occupied by the head is too large, it is difficult to install, and the manufacturing cost and difficulty are greatly increased.
  • the object of the present invention is to provide an anti-back suction drill head which is simple in structure and low in cost.
  • Two In order to solve the problem that the rubber head cover of the anti-back suction drill head touches the teeth and affect the rotation speed, the anti-back suction drill head which does not affect the rotation speed even if the pressing cover touches the tooth is provided; the third is to solve the existing dental drill head At the same time of anti-back suction, it solves the problem of dynamic balance when the wind wheel rotates at high speed; the fourth is to provide an LED lamp assembly suitable for the dental drill mobile phone with simple structure and convenient installation.
  • the present invention adopts the following technical solutions:
  • the utility model relates to a dental drill head, which is composed of a nose shell, a wind wheel and a bearing.
  • the nose shell is composed of a head shell cover and a head shell cavity
  • the wind wheel is composed of a wind wheel shaft and a wind wheel blade.
  • An anti-backlash device is formed between the nose cover and the end of the wind turbine shaft corresponding to the wind turbine shaft.
  • the head cover of the nose shell is a rubber head cover, and the periphery of the rubber head cover is fixed on the head case cavity.
  • the rubber head cover is attached to the end face of the wind turbine shaft of the wind wheel.
  • a brake disc is disposed at one end of the wind turbine shaft of the wind wheel and the rubber head cover.
  • the outer surface of the brake disc cooperates with the shape of the inner surface of the rubber head cover.
  • the brake disc center is provided with a brake disc key hole that is directly connected with the wind turbine shaft hole of the wind turbine shaft, and a rubber machine head cover key hole is disposed on the rubber head cover corresponding to the center hole of the wind turbine shaft.
  • the end of the wind turbine shaft corresponding to the rubber head cover is provided with a brake disc, which is a shaft hole of the wind wheel of the wind wheel, and a needle clamping mechanism is provided, and the needle clamping mechanism includes the wind wheel shaft.
  • a jaw in the bore a gripper rod connected to the jaw, and a brake disc coupled to the top of the gripper rod, a gripper rod between the brake disc and the top of the wind shaft
  • the set has a spring.
  • the jaw lever cooperates with a sliding key of the wind turbine shaft hole.
  • a rubber member is disposed between the nose casing and the wind wheel. In the natural state, the rubber member is in contact with the head casing and the wind wheel. In the working state, the rubber member is separated from one of the nose shell and the wind wheel.
  • a rubber layer is fixed on the inner side of the head cover of the head casing, and the rubber layer forms a cavity with the nose cover.
  • the rubber layer In a natural state, the rubber layer is in contact with the end of the wind turbine shaft, and the rubber layer and the wind are in working condition. The end of the axle is separated.
  • the machine head is provided with a vent hole, and the vent hole communicates with a cavity formed by the rubber layer and the head cover.
  • the rubber cap is fixed in the head cover, and the rubber bag is provided with the air hole communicating vent hole, and the rubber cap is not in contact with the head cover as a rubber layer.
  • the machine head is covered with a window, and the window is surrounded by a window slot.
  • the elastic ring in the rubber bag encloses the periphery of the rubber bag in the window slot around the head cover window.
  • a retaining ring is arranged outside the window cover of the nose cover, and a stop block is arranged between the retaining ring and the rubber bag, and the working state is The block block block prevents the rubber rubber capsule from expanding out of the machine head cover. .
  • a brake disc is provided at an end portion of the shaft end of the wind turbine wheel shaft. .
  • the brake rotor disk IIII is provided at the shaft end end portion of the wind turbine wheel shaft, or the spring spring retaining ring ring is set to set the brake disk disk IIII, and the brake is moved.
  • a ring-shaped groove groove II is arranged on the disk IIII, and a rubber rubber ring ring II is arranged in the ring-shaped groove groove II, and the rubber rubber ring ring II is in a natural state.
  • Rubber rubber ring film is provided on the rubber rubber ring. .
  • a ring-shaped groove IIII is arranged on the side of the wind turbine wheel blade of the wind turbine wheel shaft, and a rubber rubber ring is arranged in the ring-shaped groove IIII.
  • IIII, rubber rubber ring IIII is in contact with the shaft bearing seat of the machine head shell under the natural state, and the rubber rubber ring IIII is under working state. Subjected to the centrifugal force, it enters into the slot and separates from the shaft bearing seat. .
  • the 1LL dental drill rig is equipped with the LLEEDD total assembly, and the LLEEDD lamp is ring-shaped.
  • the surface of the upper surface is one pole, and the ring is in the ring.
  • the surface of the upper surface of the LLEEDD lamp is provided with a conductive thin film which is supported by the insulating body, and the conductive thin film and the ring-shaped LLEEDD lamp are arranged on the surface of the upper surface of the upper surface of the LLEEDD lamp.
  • the contact contact and the separation and separation of the surface surface of the upper surface are formed into an open switch of the LLEEDD lamp, and the LLEEDD lamp assembly is fixedly fixed on the head shell of the machine and surrounds the ring. Set around the needle of the car. .
  • the conductive thin film of the conductive film described above is a thin metal film of a metal metal. .
  • the conductive thin film of the conductive film described above is coated with a conductive conductive adhesive on a non-gold metal thin film film. .
  • the non-non-gold metal thin film film described in 1155 is a conductive polyester or polyester polyvinyl chloride. .
  • the ring-shaped LLEEDD lamp is a LLEEDD lamp on a ring-shaped electric circuit board, and the other side of the ring-shaped electric circuit board is a common common pole. Extreme face. .
  • the ring-shaped LLEEDD lamp described above refers to the ring-shaped ring-shaped CCOOBB, and the upper surface of the ring-shaped CCOOBB has a common surface pole. .
  • the ring-shaped LLEEDD lamp described above refers to a ring-shaped OOLLEEDD, and a ring-shaped OOLLEEDD upper and lower surface surface common pole. .
  • the invention can be used to make the brake impeller wheel when the returning suction is just started. 2200 reduce the reduction of less dirt and inhalation;; two of them, when the inside of the machine head is still positive pressure, the rubber rubber machine head cover cover uses the elastic force to brake
  • the impeller wheel of the bucket is completely preventive against the inhalation of dirt and dirt, and the structure of the knot is simple and simple, and the cost is low. .
  • the cavity body is disposed between the layer of the rubber rubber layer and the head cover of the machine head, so that Tooth teeth are not easy to touch and touch. Press the pressing part to divide, even occasionally touch and touch. Press the pressing part to divide, because the setting body cavity is not set.
  • the touch brake disc can be touched and touched, avoiding the influence of the shadow on the speed of rotation; the inner annular rubber groove is provided with a rubber rubber ring, which is both anti-backlash suction And self-adjusting and adjusting the throttle balance, one by one
  • the simplified structure is simplified, and the LLEEDD lamp and the LLEEDD lamp on/off switch are integrated into one, so that the present invention will be mounted to the dental drill.
  • the driller's mobile phone head When the driller's mobile phone head is inside and inside, it takes up less space for the head of the machine, and the installation time is also more convenient and easier than the original one. .
  • Fig. 11 is a schematic view showing the structure of the structure of the nozzle according to the state of the natural state of the pressing machine head.
  • Figure 3 is an assembly drawing of the needle clamping mechanism.
  • Fig. 4 is a schematic view showing the structure of the rubber bladder fixed to the inside of the pressing cover.
  • Fig. 5 is a schematic view showing the structure of the rubber bladder fixed to the inside of the pressing cover.
  • Fig. 6 is a schematic view showing the structure of the natural state of the head cover window.
  • Figure 7 is a schematic view showing the structure of the working state of the head cover window.
  • Figure 8 is a schematic view showing the structure of the window cover of the machine head cover.
  • Figure 9 is an enlarged view of a portion A in Figure 5.
  • Fig. 10 is a structural schematic view showing the working state of the annular groove of the brake disc.
  • Figure 11 is a schematic view showing the structure of the natural state of the annular groove of the brake disc.
  • Figure 12 is a plan view of the present invention.
  • Fig. 13 is a cross-sectional view taken along the line K-K of Fig. 1 when the LED point light source is provided in the present invention.
  • Fig. 14 is a cross-sectional view taken along line K-K of Fig. 1 when the ring-shaped LED lamp of the present invention is a COB surface light source.
  • Fig. 15 is a cross-sectional view taken along line K-K of Fig. 1 when the annular LED lamp of the present invention is an OLED surface light source. detailed description
  • an anti-back suction drill head is composed of a head shell 1, a wind wheel and a bearing 2, wherein the head cover of the head shell 1 is a rubber head cover 51, and the periphery of the rubber head cover 51 is The threaded ring 13 is screwed to the head casing cavity 12.
  • a needle clamping mechanism is disposed in the hole of the wind turbine shaft 3 of the wind wheel, and the needle clamping mechanism includes a jaw 9 located in the shaft hole of the turbine, and a jaw rod 10 connected to the jaw.
  • a brake disc 8 connected to the top of the above-mentioned gripper rod, and a spring 28 is fitted on the gripper rod 10 between the brake disc 8 and the top of the wind turbine shaft 3.
  • the spring 28 is not shown in Fig. 1 and Fig. 2, and the butterfly spring is used in Fig. 3.
  • the spring is used for clamping the stylus by the jaws, and the mobile phone for loading and unloading the bur is used.
  • the gripper rod 10 is provided with a key 23, and the wind wheel shaft hole is provided with a key groove 24, and the key 23 is slidably engaged with the key groove 24.
  • the sliding key cooperates with the shape of the finger pad 23 and the key groove 24 in a spline-fitted shape, but the jaw lever can move axially along the shaft hole of the wind wheel to rotate the jaw bar synchronously with the wind wheel shaft.
  • the rubber head cover 51 does not abut against the upper surface of the brake disc 8. At this time, when the high-pressure air stops supplying, the impeller continues to rotate at a high speed with inertia, and a negative pressure is generated in the head to suck the rubber head cover on the wind of the wind wheel. The end face of the axle, the friction between the two causes the wind wheel to stop rotating, reducing the inhalation of dirt.
  • the rubber head cover 51 is in close contact with the upper surface of the brake disc 8. At this time, when high-pressure air is supplied, as shown in Fig. 2, the high-pressure air positive pressure in the head lifts the rubber head cover away from the end surface of the wind turbine shaft of the wind wheel. The impeller rotates at high speed. When the high-pressure air stops supplying, the impeller continues to rotate at high speed with inertia. Negative pressure is generated in the machine head. The rubber head cover can be elastically pressed against the end surface of the wind turbine shaft of the wind wheel to stop the rotation of the impeller. Inhalation of dirt.
  • the upper surface of the brake disc 8 is matched with the shape of the inner surface of the rubber head cover 51. At this time, the friction plate generates a greater frictional force in full contact with the rubber head cover, making it easier for the impeller to stop rotating.
  • the above is an embodiment in which the brake disc 8 is provided.
  • the brake disc 8 is not provided, and the mobile phone for loading and unloading the bur is used instead of the mobile phone for loading and unloading the bur.
  • Rubber head cover 51 The upper end surface of the wind turbine shaft of the brake rotor. 3 The effect is not as good as the brake disc 8, but it is also an embodiment.
  • the rubber head cover 51 does not abut against the upper end surface of the wind turbine shaft 3 of the wind wheel, and a small amount of dirt is sucked in.
  • the rubber head cover 51 is in close contact with the upper end surface of the wind turbine shaft 3 of the wind wheel, and the dirt can be completely prevented from being sucked in.
  • the effect is that the brake disc 8 is not effective.
  • the brake disc 8 is provided with a brake disc key hole which is directly connected with the wind turbine shaft hole of the wind turbine shaft, and a rubber head cover key hole is arranged on the rubber head cover 51 corresponding to the center hole of the wind turbine shaft.
  • the brake disk 8 since there is no needle holding mechanism, the brake disk 8 is fixed to the upper end surface of the wind turbine shaft 3, and the back suction can be prevented as well.
  • a dental drill head is composed of a head shell 1, a wind wheel and a bearing 2.
  • the wind wheel comprises a wind wheel shaft 3 and a wind wheel blade 4, and a rubber piece is arranged between the head shell 1 and the wind wheel.
  • the rubber member In the natural state, the rubber member is in contact with the head casing 1 and the wind wheel at the same time, and the rubber member is separated from the head casing 1 and one of the wind wheels in the working state.
  • the working state is as follows: a high-pressure gas is introduced into the machine head, the high-pressure gas pushes the wind wheel to rotate, the rubber member is separated from one of the nose shell and the wind wheel, the wind wheel can rotate at a high speed; the operation stops, the high-pressure gas stops supplying, The rubber member is in contact with the nose shell and the wind wheel at the same time, and the brake of the wind wheel stops rotating, which can effectively prevent the dirt from sucking back.
  • the rubber member described above is: The inner side of the head cover 5 of the head case 1 is fixed with a rubber layer 6, and the rubber layer 6 forms a cavity with the head cover 5.
  • the rubber layer In the natural state, the rubber layer is in contact with the end of the wind turbine shaft as shown in Fig. 1.
  • the rubber layer 6 In the working state, the rubber layer 6 is separated from the end of the wind turbine shaft by the air pressure in the head casing as shown in Fig. 2; the operation stops, the high pressure gas stops supplying, The rubber layer is in contact with the end of the wind turbine shaft as shown in Fig. 1.
  • the brake of the wind turbine stops rotating, effectively preventing the dirt from sucking back.
  • the rubber layer in Fig. 3 is a rubber bladder 11, it may be fixed to the inner side of the head shell for the periphery of a layer of rubber, and the fixing method may be bonding and fixing, or may be fixed by the card slot.
  • the head cover 5 is provided with a through hole 7, and the through hole 7 is in cavity communication with the rubber layer 6 and the head cover 5.
  • the rubber layer 6 and the head cover 5 form a cavity to communicate with the atmosphere, and the working state facilitates separation of the rubber layer from the end of the wind turbine shaft.
  • the gas in the cavity is pressurized by the positive pressure, and the gas is discharged from the through hole 7.
  • the rubber layer recovers and contacts the end of the wind turbine shaft as shown in Fig. 1.
  • the rubber cap 11 is fixed in the head cover 5, and the rubber pouch 11 is provided with the air hole 28 communicating.
  • the vent hole 7 and the portion of the rubber bag 11 not in contact with the head cover 5 are rubber layers.
  • the fixing of the rubber bag 11 and the head cover 5 may be performed by fixing a point between the rubber bag 11 and the head cover 5, for example, by bonding.
  • the head cover 5 is provided with a window 25, and the window 25 is surrounded by a window groove 26.
  • the elastic ring 27 in the rubber bag 11 clamps the periphery of the rubber bag to the window around the nose cover window 25. Inside the slot 26. At this time, the elastic ring 27 divides the rubber bladder into two faces, one face as a part of the head cover 5 and the other face as a rubber layer 6.
  • a retaining ring 29 is disposed outside the slot of the nose cover window, and a stopper 30 is disposed between the retaining ring 29 and the rubber bag 11.
  • the stopper 30 blocks the rubber bag 11 from expanding out of the head cover 5.
  • the stopper 30 can be pressed into the handpiece.
  • a brake disc 8 is provided at the end of the wind turbine shaft 3. Since the contact area of the brake disc 8 with the rubber layer 6 is large, it is advantageous for the brake of the wind wheel to stop rotating.
  • a brake disc 1188 is disposed at the end of the wind turbine shaft, an annular groove 114 is disposed on the brake disc 1188, and a rubber ring 115 is disposed in the annular groove 114.
  • the rubber ring 115 is in a natural state and the head cover. 5 contact, under working condition, the rubber ring 115 is separated from the head cover 5 by centrifugal force into the groove.
  • the rubber ring 115 has both a braking function and a dynamic balance function for automatically adjusting the wind wheel. More preferably, the rubber ring 115 may be provided with a rubber film 19, which can increase the friction area and better brake.
  • the rotor blade 4 of the wind turbine shaft 3 is provided with an annular groove II on the side thereof, and a rubber ring II 17 is provided in the annular groove II16.
  • the rubber ring II 17 is in a natural state and the head casing 1
  • the bearing housing 18 is in contact with the rubber ring II 17 in the working state, and is separated from the bearing housing 18 by centrifugal force into the groove.
  • the rubber ring ⁇ 17 also has both the brake function and the dynamic balance function of the automatic adjustment of the wind wheel.
  • the end portion of the wind turbine shaft and the side of the wind turbine blade are each provided with an annular groove.
  • only one annular groove can be provided, and of course, it can also be disposed on both sides of the wind turbine blade.
  • the above-described method is not limited to the head cover that presses the loading and unloading needle, and the head cover of the key loading and unloading needle can be similarly implemented.
  • the brake disc 8 can be directly disposed at the end of the wind turbine shaft, and the center of the brake disc 8 is provided with a through hole for inserting the ejector pin or the key, which is not shown in the figure.
  • the head of the loading and unloading bur is pressed, the wind wheel shaft 3 is provided with a claw hole, and the clamping jaw 9 of the clamping claw hole is connected to the clamping claw 10, and the clamping claw 10 extends out of the clamping claw hole and fixes the spring block at the end.
  • Ring 24, the spring retaining ring 24 in the figure is a disc spring, like the spring retaining ring which can normally block the coil spring, the spring retaining ring 24 is the end of the wind wheel shaft 3; the spring retaining ring increases the diameter to the brake disc 8 ; jaw 9, gripper lever 10 and spring retaining ring
  • the integral structure of 24 is called a clamping member, and the material of the wind wheel and the clamping member may be plastic or metal.
  • the cost is lower, and a disc spring is arranged between the axial end of the wind wheel and the spring retaining ring 24.
  • the jaws 9 When installed, the jaws 9 are tightly inserted into the tapered jaw holes, and the burs are inserted into the jaws.
  • the end of the jaw hole corresponds to the end of the wind turbine shaft.
  • the LED lamp of the present invention is annular, and its upper surface (that is, the back surface of the light-emitting surface) is a pole, and an upper surface of the annular LED lamp is provided with a conductive film supported by the insulator 64. 63.
  • the contact and separation of the conductive film 63 and the upper surface of the annular LED lamp constitute an LED light switch.
  • the above-mentioned conductive film 63 may be a metal film or a non-metal film coated with a conductive paste.
  • the conductive film 63 When the conductive film 63 is a metal film, it may be a silver foil, a copper foil, an aluminum foil or the like; when the conductive film 63 is a non-metal film, it may be a conductive polyester or polyvinyl chloride, and when it is a polyester, it may be Polysulfate.
  • the above ring LED lights can be in many forms:
  • the annular LED lamp means that the bottom surface of the annular circuit board 61 is provided with an LED lamp 62, and the LED lamp 62 is a point light source.
  • the upper surface of the annular circuit board 61 is a common pole surface, as shown in FIG.
  • the annular LED lamp refers to the annular COB surface light source 65, and the upper surface of the annular COB light source 65 is common.
  • the integrated LED light source is arranged annularly under the surface of the COB light source, and is encapsulated by a sealant, and the sealant contains phosphor. , as shown in Figure 14;
  • the annular LED lamp refers to the annular OLED surface light source 66, the upper surface of the annular OLED surface light source 66 is common, and the upper surface of the annular OLED surface light source 66 is a cathode, and an electron transport layer, an organic light emitting layer, and a hole are sequentially disposed under the ring.
  • the transport layer and the glass substrate are anodes, thereby forming an annular OLED surface light source, as shown in FIG.
  • the working principle of the invention is: The invention is arranged in the outlet passage of the dental drill mobile phone. During ventilation, the conductive film 63 is in contact with the ring-shaped LED lamp, the circuit is turned on, and the LED lamp starts to illuminate; when not ventilated, the conductive film 63 is separated from the ring-shaped LED lamp, the circuit is disconnected, and the LED lamp is off.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

一种牙钻机头，由机头壳（1）、风轮和轴承（2）组成，机头壳（1）由机头壳盖（5）和机头壳腔体（12）构成，风轮由风轮轴（3）和风轮叶片（4）构成。所述机头壳盖（5）与对应的所述风轮轴（3）的端部之间构成防回吸装置。所述防回吸装置可以通过将所述机头壳盖（1）设置为橡胶机头壳盖（51）来实现，也可以通过在机头壳（1）和风轮之间设置橡胶件来实现。所述橡胶机头壳盖（51）和所述橡胶件能够在刚刚发生回吸时及时制动风轮，从而减少污物吸入。所述牙钻机头还包括环状LED灯，其上表面与导电薄膜（63）的接触和分离构成该LED灯的开关，从而能够简化结构，方便安装。

Description

一种牙钻机头
技术领域
本发明涉及齿科使用的主要磨削工具——牙钻， 尤其指涡轮牙钻的机头。 背景技术
一般来说， 作为牙科用的空气式切削装置的机头， 在其顶端备有头部， 在 该头部内装有必要的切削工具的部件， 包括切削工具的转子轴、 支持回转轴的 两个轴承、 及配置在两个轴承部之间的叶轮， 使从配置在机头的手柄部内的给 气路供给的高压空气冲击叶轮使切削工具回转。 现有的一次性牙钻的风轮轴和 叶片都是整体注塑件， 如专利号 200520045733. 3的发明专利， 其风轮轴与车针 是通过三瓣簧配合； 申请号 200910001394. 1的发明专利申请， 其风轮轴的车针 孔设置为花键形状， 通过塑料的弹力夹紧车针杆， 另外该专利设置阻风原片， 增大转动惯量， 其它的一次性牙钻还选择车针孔与车针杆过盈配合等， 这些结 构， 装卸车针必须借助专用工具， 非常麻烦。 申请号 201020542727. X发明专利， 虽然也是按压牙钻， 具体为风轮轴内设锲形夹头， 由锲形夹头夹持车针， 锲形 夹头的连接杆伸出风轮轴并固定挡板， 连接杆外周的风轮轴端与挡板之间设置 碟簧， 碟簧提供夹持力。 上述几种一次性牙钻都没有进入实用阶段， 原因为： 对于风轮轴与车针为过盈配合一次性牙钻， 全国有几家生产， 但是， 我国模具 的精度一般为 0. 04-0. 06mm, 注塑的部件精度就更差， 在每分钟 30万转的环境 下， 由于精度差产生不平衡， 引起振动， 产生噪音， 不符合标准， 就没有实际 使用。 上述两种按压装卸车针的牙钻， 结构更复杂， 旋转时不平衡更大， 噪音 更大。 再者， 目前多次使用的金属牙钻， 价格直接依赖于加工精度， 最大价格 差达到百倍。 而且，由于机头伸入口腔中， 当高压空气停止供给时， 叶轮随惯性 继续高速旋转， 就在机头内产生负压， 将外部的污物吸入机头供气通路， 目前 出现了一些防回吸手机， 但是都是在车针插入部位防止回吸， 由于该部位空间 非常小， 所使用的部件都非常精密， 相应就增加了成本。 牙科手机前端设置的 LED灯， 目前均位于手机的颈部， 这样在使用时， 由于存在角度的问题， 照明 效果不理想。若将 LED灯设置在牙科手机的正下部， 由于 LED灯和开关为两个 分离的器件， 所占机头空间太大， 不易安装， 而且大大增加了制造的成本和难 度。
发明内容
本发明的目的： 是提供一种防回吸牙钻机头， 而且结构简单， 成本低。 二 是为了解决防回吸牙钻机头的橡胶机头盖触碰牙齿而影响转速， 提供一种即便 按压盖触碰牙齿也不影响转速的防回吸牙钻机头； 三是解决现有牙钻机头防回 吸的同时， 解决风轮高速旋转时的动平衡问题； 四是提供一种适用于牙钻手机、 结构简单， 安装方便的 LED灯总成。
为解决上述问题， 本发明采用以下技术方案：
一种牙钻机头， 由机头壳、 风轮和轴承组成， 机头壳由机头壳盖和机头壳 腔体构成， 风轮由风轮轴和风轮叶片构成。
所述机头壳盖与所述风轮轴对应的风轮轴端部之间构成防回吸装置。
机头壳的机头盖是橡胶机头盖， 橡胶机头盖的周边固定在机头壳腔体上。 橡胶机头盖贴紧风轮的风轮轴端面。
所述风轮的风轮轴与橡胶机头盖对应的一端设置制动盘。
所述制动盘外表面与橡胶机头盖内表面形状相配合。
所述制动盘中心设置与风轮轴的风轮轴孔直通的制动盘钥匙孔， 橡胶机头 盖上与风轮轴的中心孔对应设置橡胶机头盖钥匙孔。
所述风轮的风轮轴与橡胶机头盖对应的一端设置制动盘， 是指风轮的风轮 轴孔内， 设置车针夹持机构， 所述车针夹持机构包括位于所述风轮轴孔内的夹 爪、 与所述夹爪相连接的夹爪杆以及与所述夹爪杆顶部相连接的制动盘， 在所 述制动盘与所述风轮轴顶部之间的夹爪杆上套装有弹簧。
所述夹爪杆与风轮轴孔滑动键配合。
所述机头壳和风轮之间设置橡胶件， 自然状态下所述橡胶件与机头壳和风 轮同时接触， 工作状态下所述橡胶件与机头壳和风轮之一分离。
所述机头壳的机头盖的内侧固定橡胶层， 所述橡胶层与机头盖形成空腔， 自然状态下所述橡胶层与风轮轴端部接触， 工作状态下所述橡胶层与风轮轴端 部分离。
所述机头盖设通气孔， 通气孔与所述橡胶层和机头盖形成的空腔联通。 所述机头盖内固定橡胶囊， 橡胶囊设出气孔联通通气孔， 橡胶囊未与机头 盖接触部分为橡胶层。
所述机头盖设窗口， 窗口周边为窗口槽， 橡胶囊内的弹性涨圈将橡胶囊的 周边卡在机头盖窗口周边的窗口槽内。
所述机头盖窗口槽外设置挡环， 挡环与橡胶囊之间设置挡块， 工作状态下 挡挡块块阻阻挡挡橡橡胶胶囊囊胀胀出出机机头头盖盖。。
所所述述风风轮轮轴轴端端部部设设制制动动盘盘。。
所所述述风风轮轮轴轴端端部部设设制制动动盘盘 IIII或或者者将将弹弹簧簧挡挡环环设设置置制制动动盘盘 IIII，， 制制动动盘盘 IIII上上设设 环环状状槽槽 II，， 环环状状槽槽 II内内设设置置橡橡胶胶环环 II，， 橡橡胶胶环环 II自自然然状状态态下下与与机机头头盖盖接接触触，， 工工作作状状
55 态态下下橡橡胶胶环环 II受受离离心心力力进进入入槽槽内内与与机机头头盖盖分分离离。。
橡橡胶胶环环 II上上设设橡橡胶胶膜膜。。
所所述述风风轮轮轴轴的的风风轮轮叶叶片片侧侧方方设设环环状状槽槽 IIII，， 环环状状槽槽 IIII内内设设置置橡橡胶胶环环 IIII，， 橡橡胶胶 环环 IIII自自然然状状态态下下与与机机头头壳壳的的轴轴承承座座接接触触，， 工工作作状状态态下下橡橡胶胶环环 IIII受受离离心心力力进进入入槽槽 内内与与轴轴承承座座分分离离。。
1100 牙牙钻钻机机头头设设置置的的 LLEEDD 总总成成，， LLEEDD灯灯是是环环状状，， 其其上上表表面面为为一一个个极极，， 在在环环状状
LLEEDD灯灯上上表表面面上上设设有有由由绝绝缘缘体体支支撑撑的的导导电电薄薄膜膜，， 导导电电薄薄膜膜与与环环状状 LLEEDD灯灯上上表表面面 的的接接触触和和分分离离构构成成 LLEEDD灯灯开开关关，，该该 LLEEDD灯灯总总成成固固定定在在机机头头壳壳上上且且环环绕绕车车针针设设置置。。
所所述述的的导导电电薄薄膜膜为为金金属属薄薄膜膜。。
所所述述的的导导电电薄薄膜膜为为非非金金属属薄薄膜膜上上涂涂导导电电胶胶。。
1155 所所述述的的非非金金属属薄薄膜膜为为导导电电的的聚聚酯酯或或聚聚氯氯乙乙烯烯。。
环环状状 LLEEDD灯灯是是指指环环状状电电路路板板上上设设 LLEEDD灯灯，， 环环状状电电路路板板的的另另一一面面为为共共极极面面。。 所所述述的的环环状状 LLEEDD灯灯是是指指环环形形 CCOOBB,, 环环形形 CCOOBB的的上上表表面面共共极极。。
所所述述的的环环状状 LLEEDD灯灯是是指指环环形形 OOLLEEDD,, 环环形形 OOLLEEDD的的上上表表面面共共极极。。 采采用用上上述述技技术术方方案案的的本本发发明明，， 一一者者，， 当当刚刚刚刚发发生生回回吸吸时时就就制制动动叶叶轮轮，， 能能够够 2200 减减少少污污物物吸吸入入；； 二二者者，， 机机头头内内还还是是正正压压时时，， 橡橡胶胶机机头头盖盖利利用用弹弹力力制制动动叶叶轮轮，， 完完 全全防防止止污污物物吸吸入入，， 而而且且结结构构简简单单，， 成成本本低低。。
由由于于减减小小了了按按压压面面积积，， 同同时时在在橡橡胶胶层层与与机机头头盖盖之之间间设设置置腔腔体体，， 使使得得牙牙齿齿不不 容容易易触触碰碰按按压压部部分分，， 偶偶尔尔触触碰碰按按压压部部分分，， 由由于于设设置置腔腔体体，， 也也不不能能触触碰碰制制动动盘盘，， 避避免免了了影影响响转转速速；； 环环形形槽槽内内设设置置橡橡胶胶环环，， 既既防防回回吸吸又又自自动动调调节节动动平平衡衡，， 一一举举两两
2255 得得，， 降降低低了了成成本本。。
简简化化了了结结构构，，将将 LLEEDD灯灯和和 LLEEDD灯灯开开关关集集成成在在一一起起，，所所以以在在将将本本发发明明安安装装至至 牙牙钻钻手手机机机机头头内内时时，， 占占用用了了较较少少的的机机头头空空间间，， 安安装装时时也也比比原原来来更更加加容容易易。。
附附图图说说明明
图图 11 按按压压机机头头自自然然状状态态剖剖视视结结构构示示意意图图。。 图 3车针夹持机构装配图。
图 4为橡胶囊固定在按压盖内侧自然状态结构示意图。
图 5为橡胶囊固定在按压盖内侧工作状态结构示意图。
图 6为机头盖设窗口自然状态结构示意图。
图 7为机头盖设窗口工作状态结构示意图。
图 8为机头盖设窗口设挡块结构示意图。
图 9为图 5中 A部分放大图。
图 10为制动盘设环状槽工作状态结构示意图。
图 11为制动盘设环状槽自然状态结构示意图。
图 12为本发明的俯视图。
图 13为本发明设置 LED点光源时， 图 1中 K-K向剖视图。
图 14为本发明环状 LED灯为 COB面光源时， 图 1中 K-K向剖视图。
图 15为本发明环状 LED灯为 OLED面光源时， 图 1中 K-K向剖视图。 具体实施方式
如图 1， 一种防回吸牙钻机头， 由机头壳 1、 风轮和轴承 2组成， 其中机头 壳 1的机头盖是橡胶机头盖 51， 橡胶机头盖 51的周边被螺紋环 13旋拧固定在 机头壳腔体 12上。 结合图 3， 风轮的风轮轴 3孔内设置车针夹持机构， 所述车 针夹持机构包括位于所述涡轮轴孔内的夹爪 9、 与上述夹爪相连接的夹爪杆 10 以及与上述夹爪杆顶部相连接的制动盘 8，在所述制动盘 8与所述风轮轴 3顶部 之间的夹爪杆 10上套装有弹簧 28。 图 1图 2中没有画出弹簧 28， 图 3中是蝶 形弹簧， 弹簧用于夹爪夹紧车针， 此时使用按压装卸车针的手机。
所述夹爪杆 10设有键 23， 风轮轴孔设键槽 24， 键 23与键槽 24滑动配合。 所述滑动键配合指键 23与键槽 24二者的形状为花键配合的形状， 但是夹爪杆 能够沿风轮轴孔轴向移动， 使夹爪杆与风轮轴同步转动。
橡胶机头盖 51不贴紧制动盘 8上表面， 此时当高压空气停止供给时， 叶轮 随惯性继续高速旋转， 在机头内产生负压能够将橡胶机头盖吸在风轮的风轮轴 端面， 二者产生摩擦使风轮停止转动， 减少污物吸入。
橡胶机头盖 51贴紧制动盘 8上表面， 此时当高压空气供给时， 如图 2， 机 头内高压空气正压将橡胶机头盖顶起脱离与风轮的风轮轴端面接触， 叶轮高速 旋转， 当高压空气停止供给时， 叶轮随惯性继续高速旋转， 在机头内产生负压 能够将橡胶机头盖由弹力贴紧风轮的风轮轴端面， 使叶轮停止转动， 完全防止 污物吸入。
所述制动盘 8上表面与橡胶机头盖 51内表面形状相配合。 此时制动盘代与 橡胶机头盖完全接触产生的摩擦力更大， 使叶轮更容易停止转动。
上述是设制动盘 8的实施例，不设制动盘 8，使用的是钥匙装卸车针的手机， 而不是按压装卸车针的手机。 橡胶机头盖 51制动风轮的风轮轴 3上端面， 效果 就没有设制动盘 8的效果好， 但也是一种实施方式。 橡胶机头盖 51不贴紧风轮 的风轮轴 3上端面， 就有微量污物吸入， 橡胶机头盖 51贴紧风轮的风轮轴 3上 端面， 也能够完全防止污物吸入。 效果就没有设制动盘 8 的效果好。 为了能够 更换车针， 所述制动盘 8 中心设置与风轮轴的风轮轴孔直通的制动盘钥匙孔， 橡胶机头盖 51上与风轮轴的中心孔对应设置橡胶机头盖钥匙孔。 这种手机， 由 于没有车针夹持机构， 制动盘 8固定在风轮轴 3上端面， 同样能够防止回吸。
如图 4、 图 5所示， 一种牙钻机头， 由机头壳 1、 风轮和轴承 2组成， 风轮 包括风轮轴 3和风轮叶片 4， 机头壳 1和风轮之间设置橡胶件， 自然状态下橡胶 件与机头壳 1和风轮同时接触， 工作状态下所述橡胶件与机头壳 1和风轮之一 分离。 所述的工作状态为： 机头内通入高压气体， 高压气体推动风轮转动， 橡 胶件与机头壳和风轮之一分离， 风轮能够高速转动； 停止工作， 高压气体停止 供应， 所述橡胶件与机头壳和风轮同时接触， 风轮制动停止转动， 能有效防止 污物回吸。
上述的橡胶件为： 机头壳 1的机头盖 5的内侧固定橡胶层 6， 橡胶层 6与机 头盖 5形成空腔。 自然状态下， 橡胶层与风轮轴端部接触如图 1， 工作状态下橡 胶层 6受机头壳内的气压压力而与风轮轴端部分离如图 2; 停止工作， 高压气体 停止供应， 所述橡胶层与风轮轴端部恢复接触如图 1， 风轮制动停止转动， 有效 防止污物回吸。 由于空腔内为环境气压， 工作状态下机头内为正压， 空腔内气 体受压缩使得橡胶层 6与风轮轴端部分离， 自然状态下， 橡胶层恢复与风轮轴 端部接触如图 1。 图 3中橡胶层虽然为橡胶囊 11， 但是可以为一层橡胶的周边 固定在机头壳内侧， 固定方式可以为粘接固定， 也可以为卡槽卡接固定。
机头盖 5设通孔 7， 通孔 7与橡胶层 6和机头盖 5形成空腔联通。此时橡胶 层 6与机头盖 5形成空腔与大气联通， 工作状态下有利于橡胶层与风轮轴端部 分离。 工作状态下， 机头内为正压压迫空腔内气体由通孔 7排出， 自然状态下， 橡胶层恢复与风轮轴端部接触如图 1。
如图 6所示， 上述机头盖 5内固定橡胶囊 11， 橡胶囊 11设出气孔 28联通 通气孔 7， 橡胶囊 11未与机头盖 5接触部分为橡胶层。上述橡胶囊 11与机头盖 5的固定可以为橡胶囊 11与机头盖 5之间只要有一个点固定就行， 例如粘接固 定。
如图 6图 7所示， 所述机头盖 5设窗口 25， 窗口 25周边为窗口槽 26， 橡 胶囊 11 内的弹性涨圈 27将橡胶囊的周边卡在机头盖窗口 25周边的窗口槽 26 内。 此时， 弹性涨圈 27将橡胶囊分为两个面， 一个面作为机头盖 5的一部分， 另一个面作为橡胶层 6。
如图 8、 图 9所示， 机头盖窗口槽外设置挡环 29， 挡环 29与橡胶囊 11之 间设置挡块 30， 工作状态下挡块 30阻挡橡胶囊 11胀出机头盖 5; 自然状态下 挡块 30能够被按入机头内。
所述风轮轴 3端部设制动盘 8。 由于制动盘 8与橡胶层 6接触接触面积大， 有利于风轮制动停止转动。
如图 10、 图 11所示， 风轮轴端部设制动盘 1188， 制动盘 1188上设环状槽 114， 环状槽 114内设置橡胶环 115， 橡胶环 115自然状态下与机头盖 5接触， 工 作状态下橡胶环 115受离心力进入槽内与机头盖 5分离。 这样， 橡胶环 115既有 制动功能， 又有自动调节风轮的动平衡功能。 更好地， 橡胶环 115上可以设橡胶 膜 19， 能够增大摩擦面积， 更好制动。
如图 7、 图 8所示， 风轮轴 3的风轮叶片 4侧方设环状槽 II 16， 环状槽 II 16 内设置橡胶环 II 17， 橡胶环 II 17自然状态下与机头壳 1的轴承座 18接触， 工作 状态下橡胶环 II 17受离心力进入槽内与轴承座 18分离。橡胶环 Π17也是既有制 动功能， 又有自动调节风轮的动平衡功能。
图 7图 8中， 风轮轴端部和风轮叶片侧方均设环状槽， 实际上只设一个环 状槽即可， 当然也可以设置在风轮叶片两侧。
上述方式不限于图中按压装卸车针的机头盖， 钥匙装卸车针的机头盖同样 能够实施。
对于插拔车针或者钥匙装卸车针的机头， 制动盘 8可以直接设置在风轮轴 端部， 制动盘 8中心设通孔用于插入顶针或者钥匙， 这样情况图中没有示出。
上述图中为按压装卸车针的机头， 上述风轮轴 3设夹爪孔， 夹爪孔内夹爪 9 连接夹爪杆 10， 夹爪杆 10伸出夹爪孔并在端部固定弹簧挡环 24， 图中弹簧挡 环 24挡的是碟簧， 与通常的能够挡螺旋弹簧的弹簧挡环一样， 弹簧挡环 24为 风轮轴 3端部； 弹簧挡环增大直径为制动盘 8; 夹爪 9、 夹爪杆 10及弹簧挡环 24为一体结构称为夹持件， 风轮和夹持件的材料可以为塑料， 也可以为金属， 为金属压铸成型的话成本更低， 风轮轴端与弹簧挡环 24之间设碟簧。 安装时， 夹爪 9撮紧插入锥形夹爪孔， 夹爪内插入车针。 对于插拔车针或者钥匙装卸车 针的机头， 由于未设夹持件， 夹爪孔端部就相当于风轮轴的端部。
本发明不限于上述实施例， 与本发明等同以及本发明提示的技术方案都属 于本发明的内容。
如图 12-15所示， 本发明中的 LED灯是环状， 其上表面 (就是发光面的背 面)为一个极， 且在环状 LED灯上表面上设有由绝缘体 64支撑的导电薄膜 63， 导电薄膜 63与环状 LED灯上表面的接触和分离构成 LED灯开关。
上述的导电薄膜 63既可以为金属薄膜， 也可以为非金属薄膜上涂导电胶。 当导电薄膜 63 为金属薄膜时， 可以为银箔、 铜箔、 铝箔等等； 当导电薄膜 63 为非金属薄膜时， 可以为导电的聚酯或聚氯乙烯， 当为聚酯时， 可以为聚硫酸 酯。
上述的环状 LED灯可以有多种形式：
一， 环状 LED灯是指环状电路板 61的底面上设 LED灯 62， 该 LED灯 62 为点光源， 此种情况下， 环状电路板 61的上表面为共极面， 如图 13所示； 二， 环状 LED灯是指环形 COB面光源 65， 环形 COB光源 65的上表面共 极， 在 COB光源上表面的下方环形设置集成 led光源， 由封胶封装， 封胶内含 荧光粉， 如图 14所示；
三， 环状 LED灯是指环形 OLED面光源 66， 环形 OLED面光源 66的上表 面共极， 在环形 OLED面光源 66上表面为阴极， 其下方依次设置电子传输层、 有机发光层、 空穴传输层及玻璃基板， 该玻璃基板为阳极， 由此构成环形 OLED 面光源， 如图 15所示。
需要说明的是，上述的 COB和 OLED发光均为现有技术，但是上述的 COB 和 OLED的环形形状区别于现有技术。
本发明的工作原理是： 将本发明设置在牙钻手机的出气通道。 通气时， 导 电薄膜 63与环状 LED灯接触， 电路导通， LED灯发光开始照明； 不通气时， 导电薄膜 63与环状 LED灯分离， 电路断开， LED灯灭。

Claims

权 利 要 求 书
1、 一种牙钻机头， 由机头壳、 风轮和轴承组成， 其特征在于： 机头壳由机 头壳盖和机头壳腔体构成， 风轮由风轮轴和风轮叶片构成。
2、 如权利要求 1所述的牙钻机头， 其特征在于： 所述机头壳盖与所述风轮 轴对应的风轮轴端部之间构成防回吸装置。
3、 如权利要求 2所述的牙钻机头， 其特征在于： 机头壳的机头盖是橡胶机 头盖， 橡胶机头盖的周边固定在机头壳腔体上。
4、 如权利要求 3所述的牙钻机头， 其特征在于： 橡胶机头盖贴紧风轮的风 轮轴端面。
5、 如权利要求 3、 4之一所述的牙钻机头， 其特征在于： 所述风轮的风轮 轴与橡胶机头盖对应的一端设置制动盘。
6、 如权利要求 5所述的牙钻机头， 其特征在于： 所述制动盘外表面与橡胶 机头盖内表面形状相配合。
7、 如权利要求 6所述的牙钻机头， 其特征在于： 所述制动盘中心设置与风 轮轴的风轮轴孔直通的制动盘钥匙孔， 橡胶机头盖上与风轮轴的中心孔对应设 置橡胶机头盖钥匙孔。
8、 如权利要求 6所述的牙钻机头， 其特征在于： 所述风轮的风轮轴与橡胶 机头盖对应的一端设置制动盘， 是指风轮的风轮轴孔内， 设置车针夹持机构， 所述车针夹持机构包括位于所述风轮轴孔内的夹爪、 与所述夹爪相连接的夹爪 杆以及与所述夹爪杆顶部相连接的制动盘， 在所述制动盘与所述风轮轴顶部之 间的夹爪杆上套装有弹簧。
9、 如权利要求 8所述的牙钻机头， 其特征在于： 所述夹爪杆与风轮轴孔滑 动键配合。
10、 如权利要求 2所述的牙钻机头， 其特征在于： 所述机头壳 （1 ) 和风轮 之间设置橡胶件， 自然状态下所述橡胶件与机头壳 （1 ) 和风轮同时接触， 工作 状态下所述橡胶件与机头壳和风轮之一分离。
11、 如权利要求 10所述的牙钻机头， 所述的橡胶件是指： 所述机头壳 （1 ) 的机头盖 （5 ) 的内侧固定橡胶层 （6)， 所述橡胶层 （6 ) 与机头盖 （5 ) 形成空 腔， 自然状态下所述橡胶层 （6 ) 与风轮轴 （3 ) 端部接触， 工作状态下所述橡 胶层 （6 ) 与风轮轴 （3 ) 端部分离。
12、 如权利要求 11 所述的牙钻机头， 其特征在于： 所述机头盖 （5 ) 设通 气孔 （7) ，通气孔 （7) 与所述橡胶层 （6) 和机头盖 （5) 形成的空腔联通。
13、 如权利要求 12所述的牙钻机头， 其特征在于： 所述机头盖 （5) 内固 定橡胶囊 （11)， 橡胶囊 （11) 设出气孔 （28) 联通通气孔 （7)， 橡胶囊 （11) 未与机头盖 （5) 接触部分为橡胶层。
14、 如权利要求 13所述的牙钻机头， 其特征在于： 所述机头盖 （5) 设窗 口 （25)， 窗口 （25) 周边为窗口槽 （26)， 橡胶囊 （11) 内的弹性涨圈 （27) 将橡胶囊的周边卡在机头盖窗口 （25) 周边的窗口槽 （26) 内。
15、 如权利要求 14所述的牙钻机头， 其特征在于： 所述机头盖窗口槽外设 置挡环 （29)， 挡环 （29) 与橡胶囊 （11) 之间设置挡块 （30)， 工作状态下挡 块 （30) 阻挡橡胶囊 （11) 胀出机头盖 （5)。
16、如权利要求 10-15之一所述的牙钻机头， 其特征在于： 所述风轮轴（3) 端部设制动盘。
17、 如权利要求 10所述的牙钻机头， 其特征在于： 所述风轮轴端部设制动 盘 II (88) 或者将弹簧挡环 （24) 设置制动盘 II (88) ， 制动盘 II (88) 上设 环状槽 I (14)， 环状槽 I (14) 内设置橡胶环 I (15)， 橡胶环 I (15) 自然状态 下与机头盖 （5) 接触， 工作状态下橡胶环 I (15) 受离心力进入槽内与机头盖 (5) 分离。
18、 如权利要求 17所述的牙钻机头， 其特征在于： 橡胶环 I (15)上设橡胶 膜 （19)。
19、 如权利要求 10所述的牙钻机头， 其特征在于： 所述风轮轴 （3) 的风 轮叶片 （4) 侧方设环状槽 II (16)， 环状槽 II (16) 内设置橡胶环 II (17)， 橡 胶环 II (17) 自然状态下与机头壳 （1) 的轴承座 （18) 接触， 工作状态下橡胶 环 II (17) 受离心力进入槽内与轴承座 （18) 分离。
20、 如权利要求 1所述的牙钻机头设置的 LED总成， 其特征在于： LED灯 是环状， 其上表面为一个极， 在环状 LED灯上表面上设有由绝缘体支撑的导电 薄膜， 导电薄膜与环状 LED灯上表面的接触和分离构成 LED灯开关， 该 LED 灯总成固定在机头壳上且环绕车针设置。
21、 根据权利要求 20所述的 LED总成， 其特征在于： 所述的导电薄膜为金 属薄膜。
22、 根据权利要求 20所述的牙钻机头设置的 LED总成， 其特征在于： 所述 的导电薄膜为非金属薄膜上涂导电胶。
23、 根据权利要求 22所述的 LED总成， 其特征在于： 所述的非金属薄膜为 导电的聚酯或聚氯乙烯。
24、 根据权利要求 20-23任一所述的 LED总成， 其特征在于： 所述的环状 LED灯是指环状电路板上设 LED灯， 环状电路板的另一面为共极面。
25、 根据权利要求 20-23任一所述的 LED总成， 其特征在于： 所述的环状 LED灯是指环形 COB , 环形 COB的上表面共极。
26、 根据权利要求 20-23任一所述的 LED总成， 其特征在于： 所述的环状 LED灯是指环形 OLED, 环形 OLED的上表面共极。
PCT/CN2012/082406 2010-05-26 2012-09-29 一种牙钻机头 WO2013053298A1 (zh)

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