CN205964190U

CN205964190U - Disposable dental handpiece

Info

Publication number: CN205964190U
Application number: CN201620628252.3U
Authority: CN
Inventors: 余伟平
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-06-23
Filing date: 2016-06-23
Publication date: 2017-02-22
Anticipated expiration: 2026-06-23

Abstract

The utility model discloses a disposable dental handpiece, the electric iron comprises a handle, the aircraft nose, be provided with the dabber in the aircraft nose cavity, the spindle cup joints and is provided with the turbine, the dabber includes that axle sleeve and car needle holder hold the piece, the inside of axle sleeve is equipped with tapered inner wall, car needle holder holds the piece and stretches into tapered position department, car needle holder holds the lower extreme lateral wall of piece and has seted up the centre gripping hole, lower extreme that car needle holder held have with axle sleeve inner wall assorted tapering, the handle includes handle casing, peg graft in the handle casing and be provided with preceding inner core and back inner core, preceding inner core all is provided with the air flue with the inside of back inner core, the water course, blow round air flue and exhaust passage. The utility model has the advantages of simple structure and reasonable design, through adopting the core semi -sealed structure, reduce cost, fall and make an uproar and stable bearing's effect, ensure the stationarity when dental handpiece uses, through setting preceding inner core and back inner core to the integral type structure, convenient equipment improves the work efficiency, reduces the probability that leaks water leakage gas, guarantees product quality.

Description

Disposable dental handpiece

Technical field

This utility model belongs to technical field of medical instruments and in particular to a kind of disposable dental handpiece.

Background technology

The dental high-speed cell phone that stomatology clinically uses, whether reusable metallic mobile phone or single use Plastic handset, its operation principle is identical, and that is, high speed handpiece is made up of head, handle, has air inlet and aerofluxuss in handle Mouthful, also there are air inlet and air vent in head, corresponding with handle.Have in hand machine head by mandrel, wind wheel, miniature bearing（Wind wheel Each one up and down）Composition, with specific compressor source of the gas, identical with windmill principle, drive two miniature bearing high-speed rotations（Often More than 300,000 turns of minute）, meet doctor on clinical oral tooth is carried out hole, the requirement of grinding.

Above-mentioned dental high-speed cell phone, in its head, the movement of setting generally has two kinds of forms, and one kind is closed movement, and one Planting is open movement, and the product of metal dental high speed handpiece adopts closed or open according to price difference, disposably Dental handpiece is all from open.In order to effectively ensure stablizing during mobile phone high-speed rotation, reduce noise as far as possible, generally adopt After wind wheel, bearing are arranged on mandrel, then it is processed into copper sheathing with copper material, machine head assembly is placed in copper sheathing, then In overall loading dental handpiece heads, this kind of set-up mode is closed.Open, do not need copper sheathing, directly will assemble Wind wheel, bearing are put in head.Closed movement can effectively ensure stability during high speed handpiece rotation, has certain noise reduction Effect, but group reload request is more fine, production cost higher it is adaptable to medium-to-high grade metal dental mobile phone, limit its popularization Application；Open due to not having copper sheathing, production cost can effectively reduce, but stably can only lean on movement when controlling dental handpiece rotation With the cooperation of head, its stability is not good enough.

And disposable dental high-speed cell phone, by the way of the fixed form of its car pin is all using plugging, that is, head shaft core away from Away from top 1/3rd, symmetrical grinds two standard-sized sulculuses, puts into the corresponding two resilient steel discs of size, It is loaded on wind wheel, by wind wheel fixation spring tab, the disposable mobile phone of this structure setting, although its cost is relatively low, people cannot be met Requirement to the dental tool that minimally invasive dental laboratories uses, the model with car pin and dental drill is continuously increased, plug-in car Pin fixed form is subject to itself shell fragment elastic limit, for having the poor car pin of work, drill bit, tension, and doctor's loading-unloading vehicle pin drill bit is stranded Difficulty, easily causes to bend to fine car pin drill bit；Cross pine, maintenance is not tight, car pin drill bit swings, affect doctor's clinical manipulation, and Excessively loosen and can also cause noise, make patient produce the feared state of mind, also have the probability of flying needle to occur, that is, because maintenance is not tight, handss Machine car pin drill bit in high-speed rotation flies out, and causes potential safety hazard, and steel disc assembling is time-consuming to take a lot of work, and is unfavorable for producing in enormous quantities.

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

Utility model content

For problems of the prior art, the purpose of this utility model is that design provides a kind of disposable dentistry handss Machine.

Described disposable dental handpiece, including handle, head, the upper end of head is provided with end cap, the machine below end cap It is provided with mandrel, socket on described mandrel is provided with turbine, and described mandrel includes the axle sleeve of hollow and is arranged on axle in head cavity Car pin holder in set is it is characterised in that the upper and lower ends of described turbine are respectively arranged with upper bearing (metal) and lower bearing, upper bearing (metal) Upper socket is provided with upper bearing sleeve, and socket on lower bearing is provided with lower bearing sleeve, and the inner lower position of described axle sleeve is provided with one Section has the inwall of taper, and the lower end of car pin holder extend at the position being provided with taper in axle sleeve, under car pin holder Side wall offers clamping hole, and the lower end of car pin holder has the taper matching with sleeve lining, and described handle includes sky The handle housing of the heart, grafting in described handle housing is provided with front inner core and rear inner core, and the inside of front inner core and rear inner core is all provided with It is equipped with the air flue of connection, water channel, blower wheel air flue）And exhaust duct, each pipeline of rear inner core setting protrudes its end face, this protrusion Each pipeline is plugged into front inner core accordingly on each pipeline, realizes front inner core and the connection of rear inner core, the other end of front inner core and machine Head is connected, and the other end of rear inner core is connected with tail connection-peg by connector, described connector is provided with and connects with air flue Tracheal entrance and the blower wheel tracheal entrance connecting with blower wheel air flue, air flue is provided with moisture outlet near one end of head Pipeline, described water channel and moisture outlet pipeline communication.

Described disposable dental handpiece is it is characterised in that the outward flange of described upper bearing sleeve and lower bearing sleeve is all socketed and sets It is equipped with O-shaped elastic tape.

Described disposable dental handpiece is it is characterised in that the extending edge of described upper bearing sleeve and lower bearing sleeve is arranged on On the shoulder of head shell.

Described disposable dental handpiece is it is characterised in that described car pin holder is three lobe springs.

Described disposable dental handpiece is it is characterised in that the upper end of described car pin holder is provided with external screw thread, described It is provided with the female thread using cooperatively with external screw thread in axle sleeve.

Described disposable dental handpiece is it is characterised in that described exhaust duct includes front inner core exhaust duct and rear inner core aerofluxuss Road, described front inner core exhaust duct cross section is the square structure of closing, and described rear inner core exhaust duct cross section is U-shaped.

Described disposable dental handpiece is it is characterised in that described front inner core and rear inner core are integral type setting.

Described disposable dental handpiece is it is characterised in that the outer wall of described front inner core and handle housing inwall are closely joined Close, between the outer wall of described rear inner core and the inwall of handle housing, leave space.

Described disposable dental handpiece is all provided with it is characterised in that being provided with described front inner core and rear inner core corresponding side surface It is equipped with plane.

This utility model structure is simple, reasonable in design, by movement is adopted semi-enclosed structure, you can reduce and produce into This, can play the effect of noise reduction and stable bearing, and then stationarity when guaranteeing that dental handpiece uses, by the car pin of setting again Holder, meets different model, the car pin of shape uses, and expands range, easy installation and removal, by by front inner core and Inner core is arranged to unitary structure afterwards, ease of assembly, improves work efficiency, reduces the probability of leak gas leakage it is ensured that product quality.

Brief description

Fig. 1 is this utility model overall structure diagram；

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

Fig. 3 is head cavity cross section structure diagram；

Fig. 4 is handle outer structural representation；

Fig. 5 is front 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 front inner core cross section structure diagram；

Fig. 8 is rear inner core cross section structure diagram；

Fig. 9 is the backsight structural representation of connector；

In figure, 1- handle, 2- head, 3- end cap, 4- turbine, 5- axle sleeve, 6- car pin holder, 7- upper bearing (metal), 8- lower axle Hold, 9- upper bearing sleeve, 10- lower bearing sleeve, 11- clamping hole, 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- female thread, inner core exhaust duct before 24-, inner core exhaust duct after 25-.

Specific embodiment

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

As shown in figs 1-9, the disposable dental handpiece of this utility model, including handle 1, head 2, the upper end setting of head 2 There is end cap 3, be provided with mandrel in the head cavity of end cap 3 lower section, socket on mandrel is provided with turbine 4, and mandrel includes hollow Axle sleeve 5 and be arranged on the car pin holder 6 in axle sleeve 5.

Concrete structure in head 2 cavity is that the upper and lower ends of turbine 4 are respectively arranged with upper bearing (metal) 7 and lower bearing 8, on On bearing 7, socket is provided with upper bearing sleeve 9, and socket on lower bearing 8 is provided with lower bearing sleeve 10, upper bearing sleeve 9 and lower bearing sleeve 10 setting, can effectively disperse certain noise, for further stable bearing and further serve as damping, buffering effect, in upper bearing (metal) The outward flange socket 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, this setting moves up and down when can control integrated head well using stress so as to consolidate Be fixed in head, steady during mobile phone rotation to guarantee, the setting of above-mentioned overall structure realizes the semiclosed of movement, thus carrying Stability during high existing disposable dental handpiece high-speed rotation.

The inner lower position of axle sleeve 5 is provided with one section of inwall with taper, and the lower end of car pin holder 6 extend into axle sleeve It is provided with the position of taper in 5, the lower end of car pin holder 6 offers clamping hole 11, and the lower end of car pin holder 6 has and axle Cover the taper that 5 inwalls match.Specifically, car pin holder 6 is three lobe springs, the upper end of car pin holder 6 is provided with external screw thread 22, it is provided with the female thread 23 using cooperatively with external screw thread 22 in axle sleeve 5.This car pin method of clamping consolidating using different plug-ins Position principle, in product high volume production process, saves manpower and time, and meets the procedure calls of consumptive material production in enormous quantities, should The principle of purl formula device, makes disposable dental handpiece eliminate the congenital defect of the fixing car pin mode of former plug-in, can be used for each Plant model, the car pin of shape, drill bit, the scope of application is more wide, can greatly meet the clinical needs of oral cavity doctor, meanwhile, car Pin, bit trips are free and relaxed, are hardly damaged, and increase the service life, safe and reliable, are not in that car pin, drill bit are fixed Not tight phenomenon, it is ensured that the safety of Clinical practice, is not in flying needle phenomenon.

The concrete structure of handle 1 is, including hollow handle housing 12, grafting in this handle housing 12 is provided with integral type The front inner core 13 of setting and rear inner core 14, the outer wall of front inner core 13 and rear inner core 14 is matched with the inwall of handle housing 12, front Inner core 13 is provided with the air flue 15 connecting, 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 each pipeline of this protrusion is plugged into front inner core accordingly on each pipeline, inner core before realization 13 and the connection of rear inner core 14, the other end of front inner core 13 is connected with head 2, the other end of rear inner core 14 pass through connector 18 with Tail connection-peg is connected, and connector 18 is provided with the tracheal entrance 19 being connected with air flue 15 and connects with blower wheel air flue 17 Blower wheel tracheal entrance, air flue 15 is provided with moisture outlet pipeline 20, water channel 16 and moisture outlet pipeline near one end of head 2 20 connections.Wherein, exhaust duct includes front inner core exhaust duct 24 and rear inner core exhaust duct 25, and front inner core exhaust duct 24 cross section is envelope The square structure closing, rear inner core exhaust duct 25 cross section is U-shaped.

The rear inner core exhaust duct 25 of the U-shaped setting of this utility model, U-shaped rear inner core row increasingly thicker with handle housing 12 Gap between air flue 25 and handle housing 12 inwall is increasing, and the discharge being easy to gas is faster more smooth, thus improve blowing The rotating speed of wind wheel.

With respect to existing hollow dental handpiece handle, by addition assembling water channel and air flue in the hollow body of rod, Vibration can be produced because of the unstable of air pressure, in this utility model handle, integral type is molded front inner core and rear inner core, in air pressure not When stablizing, vibration will not be produced it is ensured that mobile phone operates steadily, simplify production process, improve efficiency, reduce the several of gas leakage leak Rate is it is ensured that product quality.

Above disclosed only this utility model preferred embodiment, can not limit this utility model with this certainly Interest field, the equivalent variations therefore made according to this utility model claim, still belong to the scope that this utility model is covered.

Claims

1. disposable dental handpiece, including handle（1）, head（2）, head（2）Upper end be provided with end cap（3）, end cap（3）Under It is provided with mandrel, socket on described mandrel is provided with turbine in the head cavity of side（4）, described mandrel includes the axle sleeve of hollow （5）And it is arranged on axle sleeve（5）Interior car pin holder（6）It is characterised in that described turbine（4）Upper and lower ends be respectively arranged with Upper bearing (metal)（7）And lower bearing（8）, upper bearing (metal)（7）Upper socket is provided with upper bearing sleeve（9）, lower bearing（8）Upper socket is provided with down Bearing holder (housing, cover)（10）, described axle sleeve（5）Inner lower position be provided with one section of inwall with taper, car pin holder（6）Under End extend into axle sleeve（5）Inside it is provided with the position of taper, car pin holder（6）Bottom side of the wall offer clamping hole（11）, car Pin holder（6）Lower end have and axle sleeve（5）The taper that inwall matches, described handle（1）Including hollow handle housing （12）, described handle housing（12）Interior grafting is provided with front inner core（13）With rear inner core（14）, front inner core（13）With rear inner core （14）Inside be provided with the air flue of connection（15）, water channel（16）, blower wheel air flue（17）And exhaust duct, rear inner core（14）If The each pipeline put protrudes its end face, and each pipeline of this protrusion is plugged into front inner core（13）Accordingly on each pipeline, inner core before realization （13）With rear inner core（14）Connection, front inner core（13）The other end and head（2）It is connected, rear inner core（14）The other end pass through Connector（18）It is connected with tail connection-peg, described connector（18）On be provided with and air flue（15）The tracheal entrance of connection（19） And with blower wheel air flue（17）The blower wheel tracheal entrance of connection, air flue（15）Near head（2）One end be provided with steam and go out Mouth pipeline（20）, described water channel（16）With moisture outlet pipeline（20）Connection.

2. as claimed in claim 1 disposable dental handpiece it is characterised in that described upper bearing sleeve（9）And lower bearing sleeve（10） Outward flange be all socketed and be provided with O-shaped elastic tape（21）.

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

4. as claimed in claim 1 disposable dental handpiece it is characterised in that described car pin holder（6）For three lobe springs.

5. as claimed in claim 1 disposable dental handpiece it is characterised in that described car pin holder（6）Upper end be provided with External screw thread（22）, described axle sleeve（5）Inside it is provided with and external screw thread（22）The female thread using cooperatively（23）.

6. as claimed in claim 1 disposable dental handpiece it is characterised in that described exhaust duct includes front inner core exhaust duct （24）With rear inner core exhaust duct（25）, described front inner core exhaust duct（24）Cross section is the square structure of closing, described rear inner core Exhaust duct（25）Cross section is U-shaped.

7. as claimed in claim 1 disposable dental handpiece it is characterised in that described front inner core（13）With rear inner core（14）All For integral type setting.

8. as claimed in claim 1 disposable dental handpiece it is characterised in that described front inner core（13）Outer wall and handle case Body（12）Inwall is fitted close, described rear inner core（14）Outer wall and the inwall of handle housing between leave space.

9. as claimed in claim 1 disposable dental handpiece it is characterised in that described front inner core（13）With rear inner core（14）Right Answer to be provided with side and be provided with plane.