CN106073908B

CN106073908B - Disposable dental handpiece

Info

Publication number: CN106073908B
Application number: CN201610461906.2A
Authority: CN
Inventors: 余伟平
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-06-23
Filing date: 2016-06-23
Publication date: 2019-03-19
Anticipated expiration: 2036-06-23
Also published as: CN106073908A

Abstract

The invention discloses disposable dental handpieces, including handle, head, mandrel is provided in head cavity, socket is provided with turbine on mandrel, mandrel includes axle sleeve and vehicle needle clamping piece, the inside of axle sleeve is equipped with the inner wall of taper, vehicle needle clamping piece is extend at the position of taper, the bottom side of the wall of vehicle needle clamping piece offers holding holes, the lower end of vehicle needle clamping piece has the taper to match with sleeve lining, handle includes handle housing, grafting is provided with preceding inner core and rear inner core in handle housing, the inside of preceding inner core and rear inner core is provided with air flue, water channel, blower wheel air flue and exhaust duct.The configuration of the present invention is simple, design are reasonable, by the way that machine core is used semi-enclosed structure, reduce the effect of cost, noise reduction and stable bearing, ensure stationarity when dental handpiece uses, by the way that preceding inner core and rear inner core are arranged to integral structure, ease of assembly improves work efficiency, the probability of leak gas leakage is reduced, guarantees product quality.

Description

Disposable dental handpiece

Technical field

The invention belongs to the field of medical instrument technology, and in particular to a kind of disposable dental handpiece.

Background technique

The dental high-speed cell phone that dentistry clinically uses, the metallic mobile phone whether reused or disposable Plastic handset, its working principle is that identical, i.e., high speed handpiece is made of head, handle, there is air inlet and exhaust in handle Mouthful, also there are air inlet and exhaust outlet in head, it is corresponding on handle.Have in hand machine head by mandrel, wind wheel, miniature bearing (wind wheel Each one up and down) composition, it is identical as windmill principle with specific compressor gas source, drive two miniature bearing high speed rotations (every 300,000 turns of minute or more), meet the requirement that doctor on clinical oral drills to tooth, is ground.

Above-mentioned dental high-speed cell phone, the machine core being arranged in head is usually there are two types of form, one is closed machine core, one Planting is open machine core, and the product of metal dental high speed handpiece is different according to price and use is closed or open, disposably Dental handpiece is selected open.In order to effectively guarantee stabilization when mobile phone high speed rotation, as far as possible reduction noise, generally use It is processed into copper sheathing after wind wheel, bearing are mounted on mandrel, then with copper material, machine head assembly is placed into copper sheathing, then Whole to be packed into dental handpiece heads, this kind of set-up mode is closed.It is open, it does not need copper sheathing, will directly assemble Wind wheel, bearing are put into head.Closed machine core can effectively guarantee stability when high speed handpiece rotation, there is certain noise reduction Effect, but group reload request is more fine, and production cost is higher, suitable for medium-to-high grade metal dental mobile phone, limits its popularization Using；Open due to not having copper sheathing, production cost be can effectively reduce, but stabilization can only lean on machine core when control dental handpiece rotation With the cooperation of head, stability is not good enough.

And disposable dental high-speed cell phone, the fixed form of vehicle needle are all made of the mode of plug, i.e., head central spindle away from At the one third of top, two standard-sized sulculuses are symmetrically ground, are put into the corresponding two flexible steel discs of size, It is loaded on wind wheel, by wind wheel fixation spring tab, the disposable mobile phone of the structure setting, cost is although lower, but is unable to satisfy people Requirement to dental tool used in minimally invasive dentistry, as the model of vehicle needle and dental drill is continuously increased, plug-in vehicle Needle fixed form is limited by itself elastic slice elasticity, and to the vehicle needle for having work difference, for drill bit, tension, doctor's loading-unloading vehicle needle drill bit is tired Difficulty easily causes to bend to fine vehicle needle drill bit；Pine is crossed, maintenance is not tight, and vehicle needle drill bit is swung, doctor's clinical manipulation is influenced, and Noise can also be caused by excessively loosening, and patient is made to generate the feared state of mind, also have the probability of flying needle to occur, i.e., since maintenance is not tight, hand Vehicle needle drill bit flies out machine when rotating at high speed, causes security risk, and steel disc assembling is time-consuming, is unfavorable for producing in enormous quantities.

In addition, existing disposable dental handpiece, casing are plastic material, it is molded by injection molding machine, fuselage is usual For bar, and the intake and exhaust pipeline of mobile phone is that metal tube is formed by man-made assembly for the water atomization pipeline of cooling.Pipe A possibility that road thickness is different, and position is different, easily gets wrong in assembling, and interface is more, gas leakage leak are bigger, directly affect production Quality, and artificial classification assembling procedure, are also not suitable for the requirements of mass production of medical disposable material.

Summary of the invention

Aiming at the problems existing in the prior art, it is an object of the invention to design to provide a kind of disposable dental handpiece.

The disposable dental handpiece, including handle, head, the upper end of head are provided with end cap, the machine below end cap Mandrel is provided in head cavity, socket is provided with turbine on the mandrel, and the mandrel includes hollow axle sleeve and is arranged in axis Vehicle needle clamping piece in set, it is characterised in that the upper and lower ends of the turbine are respectively arranged with upper bearing (metal) and lower bearing, upper bearing (metal) Upper socket is provided with upper bearing sleeve, and socket is provided with lower bearing sleeve on lower bearing, and the inner lower position of the axle sleeve is equipped with one Section has the inner wall of taper, and the lower end of vehicle needle clamping piece is extend at the position in axle sleeve equipped with taper, under vehicle needle clamping piece End side wall offers holding holes, and the lower end of vehicle needle clamping piece has the taper to match with sleeve lining, and the handle includes sky The handle housing of the heart, grafting is provided with preceding inner core and rear inner core in the handle housing, and the inside of preceding inner core and rear inner core is all provided with It is equipped with the air flue, water channel, blower wheel air flue of connection) and exhaust duct, each pipeline of rear inner core setting protrudes its end face, the protrusion Inner core realizes the connection of preceding inner core and rear inner core, the other end and machine of preceding inner core accordingly on each pipeline before each pipeline is plugged into Head is connected, and the other end of rear inner core is connected by connector with tail connection-peg, is provided on the connector and is connected to air flue Tracheal entrance and the blower wheel tracheal entrance that is connected to blower wheel air flue, air flue one end of head is provided with moisture outlet Pipeline, the water channel are connected to moisture outlet pipeline.

The disposable dental handpiece, it is characterised in that the outer edge of the upper bearing sleeve and lower bearing sleeve is socketed and sets It is equipped with O-shaped elastic tape.

The disposable dental handpiece, it is characterised in that the setting of the extending edge of the upper bearing sleeve and lower bearing sleeve exists On the shoulder of head shell.

The disposable dental handpiece, it is characterised in that the vehicle needle clamping piece is three valve springs.

The disposable dental handpiece, it is characterised in that the upper end of the vehicle needle clamping piece is provided with external screw thread, described The internal screw thread being used cooperatively with external screw thread is provided in axle sleeve.

The disposable dental handpiece, it is characterised in that the exhaust duct includes preceding inner core exhaust duct and the exhaust of rear inner core Road, the preceding inner core exhaust duct cross section are closed square structure, and the rear inner core exhaust duct cross section is U-shaped.

The disposable dental handpiece, it is characterised in that the preceding inner core and rear inner core are integral type setting.

The disposable dental handpiece, it is characterised in that the outer wall of the preceding inner core is closely matched with handle housing inner wall It closes, there are gaps between the rear outer wall of inner core and the inner wall of handle housing.

The disposable dental handpiece, it is characterised in that be provided with and be all provided on the preceding inner core and rear inner core corresponding side surface It is equipped with plane.

The configuration of the present invention is simple, design are reasonable, by the way that machine core using semi-enclosed structure, can be reduced production cost, It can play the role of noise reduction and stable bearing again, and then ensure stationarity when dental handpiece uses, be pressed from both sides by the vehicle needle of setting Gripping member, meet different model, shape vehicle needle use, expand use scope, it is easy for assemble or unload, by by preceding inner core and after Inner core is arranged to unitary structure, and ease of assembly improves work efficiency, reduces the probability of leak gas leakage, guarantees product quality.

Detailed description of the invention

Fig. 1 is overall structure of the present invention；

Fig. 2 is the explosive view of installation part in head cavity；

Fig. 3 is head cavity schematic cross-sectional view；

Fig. 4 is handle outer structural schematic diagram；

Fig. 5 is preceding inner core and rear inner core assembly structure diagram；

Fig. 6 is the mounting structure schematic diagram of rear inner core and connector；

Fig. 7 is preceding inner core schematic cross-sectional view；

Fig. 8 is rear inner core schematic cross-sectional view；

Fig. 9 is the backsight structural representation of connector；

In figure, 1- handle, 2- head, 3- end cap, 4- turbine, 5- axle sleeve, 6- vehicle needle clamping piece, 7- upper bearing (metal), 8- lower axle It holds, 9- upper bearing sleeve, 10- lower bearing sleeve, 11- holding holes, 12- handle housing, inner core before 13-, inner core after 14-, 15- air flue, 16- water channel, 17- blower wheel air flue, 18- connector, 19- tracheal entrance, 20- moisture outlet pipeline, 21-O type elastic tape, 22- External screw thread, 23- internal screw thread, inner core exhaust duct before 24-, inner core exhaust duct after 25-.

Specific embodiment

Below in conjunction with Figure of description, invention is further described in detail, and provides specific embodiment.

As shown in figs 1-9, the disposable dental handpiece of the present invention, including handle 1, head 2, the upper end of head 2 are provided with end Lid 3 is provided with mandrel in the head cavity of the lower section of end cap 3, and socket is provided with turbine 4 on mandrel, and mandrel includes hollow axle sleeve 5 And the vehicle needle clamping piece 6 in axle sleeve 5 is set.

Specific structure in 2 cavity of head is that the upper and lower ends of turbine 4 are respectively arranged with upper bearing (metal) 7 and lower bearing 8, on Socket is provided with upper bearing sleeve 9 on bearing 7, and socket is provided with lower bearing sleeve 10, upper bearing sleeve 9 and lower bearing sleeve on lower bearing 8 10 setting can effectively disperse certain noise, for further stable bearing and damping, buffering effect be further served as, in upper bearing (metal) The socket of the outer edge of set 9 and lower bearing sleeve 10 is provided with O-shaped elastic tape 21, the extending edge of upper bearing sleeve 9 and lower bearing sleeve 10 It is arranged on the shoulder of head shell, which moves up and down when can control well integrated head using stress, keeps it firm Be fixed in head, with steady when ensuring mobile phone rotation, the semiclosed of machine core is realized in the setting of above-mentioned overall structure, to mention Stability when high existing disposable dental handpiece high speed rotation.

The inner lower position of axle sleeve 5 is equipped with one section of inner wall with taper, and the lower end of vehicle needle clamping piece 6 extend into axle sleeve At position in 5 equipped with taper, the lower end of vehicle needle clamping piece 6 offers holding holes 11, and the lower end of vehicle needle clamping piece 6 has and axis Cover the taper that 5 inner walls match.Specifically, vehicle needle clamping piece 6 is three valve springs, the upper end of vehicle needle clamping piece 6 is provided with external screw thread 22, the internal screw thread 23 being used cooperatively with external screw thread 22 is provided in axle sleeve 5.The vehicle needle method of clamping is consolidated using different plug-ins Position principle saves manpower and time in product high volume production process, meets the procedure calls of consumptive material mass production, should The principle of purl formula device makes disposable dental handpiece eliminate the inadequate natural endowment of the fixed vehicle needle mode of former plug-in, can be used for each Vehicle needle, the drill bit of kind model, shape, the scope of application is more wide, can greatly meet the needs of oral cavity doctor clinic, meanwhile, vehicle Needle, bit trips are free and relaxed, are hardly damaged, and prolong the service life, safe and reliable, are not in that vehicle needle, drill bit are fixed Not tight phenomenon, it is ensured that the safety of clinical use is not in flying needle phenomenon.

The specific structure of handle 1 is, including hollow handle housing 12, grafting is provided with integral type in the handle housing 12 The outer wall of the preceding inner core 13 and rear inner core 14 being arranged, preceding inner core 13 and rear inner core 14 matches with the inner wall of handle housing 12, preceding Inner core 13 is provided with the air flue 15 being connected to, water channel 16, blower wheel air flue 17 and exhaust duct, rear inner core with the inside of rear inner core 14 Each pipelines of 14 settings protrude its end face, and inner core is accordingly on each pipeline before each pipeline of the protrusion is plugged into, inner core before realizing 13 and rear inner core 14 connection, the other end of preceding inner core 13 is connected with head 2, the other end of rear inner core 14 by connector 18 with Tail connection-peg is connected, and is provided with the tracheal entrance 19 being connected to air flue 15 on connector 18 and is connected to blower wheel air flue 17 Blower wheel tracheal entrance, air flue 15 are provided with moisture outlet pipeline 20, water channel 16 and moisture outlet pipeline close to one end of head 2 20 connections.Wherein, exhaust duct includes preceding inner core exhaust duct 24 and rear inner core exhaust duct 25, and preceding 24 cross section of inner core exhaust duct is envelope The square structure closed, rear 25 cross section of inner core exhaust duct are U-shaped.

The rear inner core exhaust duct 25 of the U-shaped setting of the present invention, as handle housing 12 is increasingly thicker, U-shaped rear inner core exhaust duct Gap between 25 and 12 inner wall of handle housing is increasing, faster more smooth convenient for the discharge of gas, to improve blower wheel Revolving speed.

Relative to existing hollow dental handpiece handle, by addition assembling water channel and air flue in the hollow body of rod, Can because air pressure it is unstable due to generates vibration, integral type injection molding preceding inner core and rear inner core in handle of the present invention is unstable in air pressure When, vibration will not be generated, it is ensured that mobile phone runs smoothly, and simplifies production process, improves efficiency, and reduces the probability of gas leakage leak, really Protect product quality.

The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly It encloses, therefore equivalent changes made in accordance with the claims of the present invention, is still within the scope of the present invention.

Claims

1. disposable dental handpiece, including handle (1), head (2), the upper end of head (2) are provided with end cap (3), under end cap (3) It is provided with mandrel in the head cavity of side, is socketed and is provided with turbine (4) on the mandrel, the mandrel includes hollow axle sleeve (5) and vehicle needle clamping piece (6) in axle sleeve (5) is set, it is characterised in that the upper and lower ends of the turbine (4) are respectively arranged with Upper bearing (metal) (7) and lower bearing (8) are socketed on upper bearing (metal) (7) and are provided with upper bearing sleeve (9), be socketed and be provided with down on lower bearing (8) The outer edge of bearing holder (housing, cover) (10), the upper bearing sleeve (9) and lower bearing sleeve (10), which is socketed, is provided with O-shaped elastic tape (21), institute The inner lower position for stating axle sleeve (5) is equipped with one section of inner wall with taper, and the lower end of vehicle needle clamping piece (6) extend into axle sleeve (5) at the position in equipped with taper, the bottom side of the wall of vehicle needle clamping piece (6) is offered holding holes (11), vehicle needle clamping piece (6) Lower end has the taper to match with axle sleeve (5) inner wall, and the handle (1) includes hollow handle housing (12), the handle Shell (12) interior grafting is provided with preceding inner core (13) and rear inner core (14), and the inside of preceding inner core (13) and rear inner core (14) is respectively provided with There are air flue (15), water channel (16), blower wheel air flue (17) and the exhaust duct of connection, each pipeline of rear inner core (14) setting protrudes it End face, each pipeline of the protrusion are plugged on the corresponding each pipeline of preceding inner core (13), realize preceding inner core (13) and rear inner core (14) Connection, the other end of preceding inner core (13) is connected with head (2), and the other end of rear inner core (14) passes through connector (18) and tail Connection-peg is connected, and the exhaust duct includes preceding inner core exhaust duct (24) and rear inner core exhaust duct (25), the preceding inner core exhaust duct (24) cross section be closed square structure, it is described after inner core exhaust duct (25) cross section it is U-shaped, the preceding inner core (13) and after Inner core (14) integral type is molded to be formed, be provided on the connector (18) tracheal entrance (19) being connected to air flue (15) and with The blower wheel tracheal entrance of blower wheel air flue (17) connection, air flue (15) are provided with moisture outlet pipe close to the one end of head (2) Road (20), the water channel (16) are connected to moisture outlet pipeline (20).

2. disposable dental handpiece as described in claim 1, it is characterised in that the upper bearing sleeve (9) and lower bearing sleeve (10) Extending edge be arranged on the shoulder of head shell.

3. disposable dental handpiece as described in claim 1, it is characterised in that the vehicle needle clamping piece (6) is three valve springs.

4. disposable dental handpiece as described in claim 1, it is characterised in that the upper end of the vehicle needle clamping piece (6) is provided with External screw thread (22), the axle sleeve (5) is interior to be provided with the internal screw thread (23) being used cooperatively with external screw thread (22).

5. disposable dental handpiece as described in claim 1, it is characterised in that the outer wall and handle case of the preceding inner core (13) Body (12) inner wall is fitted close, and there are gaps between the rear outer wall of inner core (14) and the inner wall of handle housing.

6. disposable dental handpiece as described in claim 1, it is characterised in that the preceding inner core (13) and rear inner core (14) are right It answers and is provided with plane on side.