CN109199609B - Take locking safety device that takes off's can dismantle dental handpiece - Google Patents
Take locking safety device that takes off's can dismantle dental handpiece Download PDFInfo
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- CN109199609B CN109199609B CN201810988223.1A CN201810988223A CN109199609B CN 109199609 B CN109199609 B CN 109199609B CN 201810988223 A CN201810988223 A CN 201810988223A CN 109199609 B CN109199609 B CN 109199609B
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- ejector rod
- mounting seat
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- sealing rubber
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- 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
- A61C1/06—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 electric drive
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- 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
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- 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
The invention discloses a detachable dental handpiece with an anti-loosening safety device, which comprises a handpiece body, a connecting seat and a handpiece head; the machine head comprises a machine head shell and a disassembling seat; the machine body comprises a machine body shell, a hollow mounting seat, a speed reducer and a mandril; the connecting seat is fixed on the speed reducer, and the speed reducer is fixed on the hollow mounting seat; the outer shell of the machine body is sleeved on the outer walls of the hollow mounting seat and the speed reducer; the lower part of the hollow mounting seat and the connecting seat are provided with jacks; the ejector rod is provided with an ejector rod radial boss, the bottom end of the ejector rod is inserted into the jack of the hollow mounting seat and protrudes out of the hollow mounting seat, the ejector rod radial boss is abutted to the jack, and the top end of the ejector rod is inserted into the jack of the connecting seat. This application is through setting up locking moving structure and detachable construction, and when making dental handpiece function, the ejector pin stretches into spacing slot, and difficult roll-off prevents to lead to the connection position pine to take off owing to high-speed the rotation, causes the incident, and the postoperative of being convenient for is dismantled the essential element simultaneously and is carried out more effectual clean maintenance.
Description
Technical Field
The invention relates to the technology of medical instruments, in particular to a detachable dental handpiece with a loosening-proof safety device.
Background
The dental handpiece is a medical instrument commonly used for oral treatment, can be used for positioning and drilling oral hard tissues by rotating and matching with the lathing needles with different shapes at a high speed, can enlarge or even cut, can usually generate blood, saliva and other infectious substances to permeate into the handpiece in the process of oral surgery of a patient, is difficult to disassemble, is difficult to clean, can influence the service life of the handpiece due to long-term accumulation, and is easy to cause cross infection.
The existing dental handpiece consists of a handpiece body and a handpiece, wherein the handpiece body and the handpiece are detachably mounted, but the existing detachable mode adopts threaded connection, but the connection between the handpiece body and the handpiece is easily loosened due to high-speed rotation and vibration in the working process.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a detachable dental handpiece with a loosening-preventing safety device.
The purpose of the invention is realized by adopting the following technical scheme: a detachable dental handpiece with a loosening-proof safety device comprises a handpiece body, a connecting seat and a handpiece head; the connecting seat is fixed on the top of the machine body, and the machine head is detachably connected to the connecting seat;
the machine head comprises a machine head shell and a disassembling seat fixed at the bottom of the machine head shell; the splitting seat is detachably connected to the connecting seat; a limiting slot is formed in the lower extension edge of the splitting seat;
the machine body comprises a machine body shell, a hollow mounting seat, a speed reducer and an ejector rod; the connecting seat is fixed on the speed reducer, and the speed reducer is fixed on the hollow mounting seat; the outer shell of the machine body is sleeved on the outer walls of the hollow mounting seat and the speed reducer; the lower part of the hollow mounting seat is provided with a jack, and the connecting seat is provided with a jack; the ejector rod is provided with an ejector rod radial boss, the bottom end of the ejector rod is inserted into the jack of the hollow mounting seat and protrudes out of the hollow mounting seat, the ejector rod radial boss is abutted above the jack of the hollow mounting seat, and the top end of the ejector rod is inserted into the jack of the connecting seat; when the dental handpiece works, the power device is fixedly arranged on the hollow mounting seat of the handpiece body, so that the ejector rod protruding out of the hollow mounting seat moves upwards, and the top end of the ejector rod extends into the limiting slot of the detaching seat.
Furthermore, the top of the connecting seat is provided with a limiting table buckled with the splitting seat, and a limiting convex strip is convexly arranged on the limiting table along the radial direction; a notch and a sliding groove communicated with the notch are arranged on the lower extension edge of the splitting seat; when the splitting seat is buckled on the limiting table of the connecting seat, the limiting convex strips enter the sliding groove along the notch, and the splitting seat is rotated to enable the limiting convex strips to be limited in the sliding groove.
Furthermore, the limiting slot is overlapped with the notch.
Furthermore, an anti-slip groove and a guide inclined plane are arranged in the sliding groove.
Further, the dental handpiece further comprises a return spring, a radial boss of the mounting seat is arranged on the outer wall of the hollow mounting seat, the spring is sleeved on the ejector rod from the top of the ejector rod, the bottom end of the spring is abutted against the radial boss of the ejector rod, and the top end of the spring is abutted against the radial boss of the mounting seat.
Further, the machine head also comprises a movement assembly and a transmission shaft; the movement assembly comprises a front bearing, a rear bearing, a main shaft, a locking shaft and a machine needle; a machine core cavity and a transmission shaft cavity are formed in the machine head shell; the front bearing, the rear bearing, the main shaft and the locking shaft are all arranged in the machine core cavity; the transmission shaft is arranged in the transmission shaft cavity; the inner walls of the front bearing and the rear bearing are sleeved on the outer surfaces of two ends of the main shaft, and the outer walls of the front bearing and the rear bearing are tightly attached to the machine core cavity; the locking shaft penetrates through and is fixed inside the main shaft, and one end of the locking shaft extends out of the movement cavity; the sewing needle is in transmission connection with the locking shaft; the outer wall of the main shaft is provided with a core gear which is positioned between the front bearing and the rear bearing; one end of the transmission shaft is in transmission connection with the machine core gear, and the other end of the transmission shaft is in transmission connection with the speed reducer.
Furthermore, the top of the speed reducer is provided with transmission teeth in transmission connection with the bottom end of the transmission shaft, and the bottom of the speed reducer is provided with transmission teeth in transmission connection with the power device.
Furthermore, the machine head also comprises a front sealing rubber gasket, a rear sealing rubber gasket, a gasket and a retainer ring; the inner wall of the front sealing rubber pad is sleeved on the outer wall of the locking shaft, and the outer wall of the front sealing rubber pad is tightly attached to the machine core cavity; the inner wall of the rear sealing rubber cushion is sleeved on the outer wall of the main shaft, and the outer wall of the rear sealing rubber cushion is tightly attached to the machine core cavity; the front sealing rubber gasket and the rear sealing rubber gasket are sequentially positioned on the outer sides of the front bearing and the rear bearing; the gasket is arranged between the front sealing rubber gasket and the front bearing; the retainer ring is arranged between the rear sealing rubber gasket and the rear bearing.
Furthermore, the outside of preceding sealed cushion is equipped with annular boss, aircraft nose shell inner wall is equipped with the spacing groove with annular boss adaptation with the department of hugging closely of preceding sealed cushion outer wall.
Furthermore, the longitudinal section of the retainer ring is L-shaped, and the rear sealing rubber gasket is limited in the L-shaped groove of the retainer ring.
Compared with the prior art, the invention has the beneficial effects that:
(1) the anti-loosening structure is arranged, namely the ejector rod, the splitting seat and the connecting seat are matched to operate; when the dental handpiece works, the power device is fixedly connected with the hollow mounting seat on the handpiece, the ejector rod protruding out of the hollow mounting seat is enabled to move upwards under the pressure action of the power device, the top end of the ejector rod extends into the limiting slot of the detaching seat, the ejector rod is fixed in the limiting slot and is not easy to slide out, and safety accidents caused by looseness of a connecting part due to high-speed rotation are prevented. When the dental handpiece stopped working, dismantle power device after, the ejector pin moves down under the action of gravity and resets, makes the ejector pin break away from spacing slot, but aircraft nose and connecting seat realization rotary disassembly make things convenient for the aircraft nose, washs the maintenance aircraft nose, prevents cross infection, and has prolonged dental handpiece's life.
(2) In addition, its operational environment of dental handpiece's core assembly is mostly inside the oral cavity, and this service environment is comparatively moist and the bacterium is more. Therefore, the requirement on the sealing performance of the movement assembly is high, if the sealing performance is poor, water vapor or bacteria easily enter the dental handpiece, and the water vapor and the bacteria entering the dental handpiece easily corrode the movement assembly or breed a large amount of bacteria due to the fact that the dental handpiece needs to be repeatedly used, so that the treatment and the use of doctors are not facilitated. This application dual-seal core subassembly plays main sealed effect, seal the cushion before both sides set up through the front and back at core housing, back seal the cushion, preceding seal the cushion, the spacing composite action of hugging closely of back seal cushion and core housing, because the inner circle of preceding bearing and rear bearing, the gap must exist with other part contact departments in the outer lane, bearing and rear bearing before current seal cushion and back seal cushion correspond compresses tightly, make the gap that the bloody water can't pass through between the bearing enter into the part preceding bearing, in the cavity that forms between rear bearing and the main shaft, prevent the bearing, parts such as core gear are because water, vapour gets into and produces the corruption. In summary, the double-sealing implementation mode prevents water vapor from entering the inner part of the movement to cause the movement to rust, and prolongs the service life of the bearing.
(3) Set up the detachable structure, but increase the split of split seat and connecting seat promptly and unite, make fuselage and aircraft nose dismantle more portably high-efficient, conveniently dismantle out the clean maintenance of the major part of the postoperative of being convenient for, wash thoroughly, prevent cross infection, and prolonged the life who plants the cell-phone, avoided steam and bacterium in the cell-phone to make core assembly produce the corruption easily or breed a large amount of bacteria.
Drawings
FIG. 1 is a schematic view of a detachable dental handpiece with a safety device for preventing loosening according to a preferred embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic view showing the internal structure of a detachable dental handpiece with a safety device for preventing loosening according to a preferred embodiment of the present invention;
FIG. 4 is an enlarged view of area B of FIG. 3;
FIG. 5 is a schematic view of a detachable base according to a preferred embodiment of the present invention;
FIG. 6 is a schematic view of a connecting base according to a preferred embodiment of the present invention;
FIG. 7 is a schematic structural view of a decelerator according to a preferred embodiment of the present invention;
figure 8 is a cross-sectional view of a cartridge assembly in accordance with a preferred embodiment of the present invention;
FIG. 9 is an enlarged view of area C of FIG. 8;
FIG. 10 is an enlarged view of area D of FIG. 8;
FIG. 11 is a schematic view of a front sealing rubber gasket according to a preferred embodiment of the present invention;
fig. 12 is a schematic structural view of a retainer ring according to a preferred embodiment of the present invention.
In the figure: 1. a machine head; 11. a handpiece housing; 111. a limiting groove; 12. disassembling the seat; 121. limiting slots; 122. a notch; 123. a chute; 1231. an anti-slip groove; 1232. a guide slope; 13. a movement assembly; 131. a front bearing; 132. a rear bearing; 133. a main shaft; 134. a locking shaft; 135. a front sealing rubber gasket; 1351. an annular boss; 136. sealing the rubber gasket; 137. a gasket; 138. a retainer ring; 1381. an L-shaped groove; 14. a drive shaft; 2. a connecting seat; 21. a limiting table; 22. limiting convex strips; 3. a body; 31. a fuselage shell; 32. a hollow mounting seat; 321. a radial boss of the mounting seat; 33. a speed reducer; 331. a transmission tooth; 34. a top rod; 341. a radial boss of the ejector rod; 35. a jack; 36. a return spring.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
As shown in fig. 1-4, a detachable dental handpiece with a safety device for preventing loosening comprises a handpiece 3, a connecting seat 2 and a handpiece 1; the connecting seat 2 is fixed on the top of the machine body 3, and the machine head 1 is detachably connected to the connecting seat 2;
the machine head 1 comprises a machine head shell 11 and a disassembling seat 12 fixed at the bottom of the machine head shell 11; the disassembling seat 12 is detachably connected to the connecting seat 2; a limiting slot 121 for limiting the movement of the ejector rod 34 is arranged on the lower edge of the splitting seat 12, as shown in fig. 4;
the machine body 3 comprises a machine body shell 31, a hollow mounting seat 32, a speed reducer 33 and a mandril 34; the connecting seat 2 is fixed on a speed reducer 33, and the speed reducer 33 is fixed on a hollow mounting seat 32; the outer shell 31 of the machine body is sleeved on the outer walls of the hollow mounting seat 32 and the speed reducer 33; the lower part of the hollow mounting seat 32 is provided with a jack 35, and the connecting seat 2 is provided with the jack 35; the ejector rod 34 is provided with an ejector rod radial boss 341, the bottom end of the ejector rod 34 is inserted into the insertion hole 35 of the hollow installation seat 32 and protrudes out of the hollow installation seat 32, the ejector rod radial boss 341 abuts against the insertion hole 35 of the hollow installation seat 32, and the top end of the ejector rod 34 is inserted into the insertion hole 35 of the connection seat 2; when the dental handpiece is operated, a power device (not shown) is fixedly arranged on the hollow mounting seat 32 of the body 3, so that the ejector rod 34 protruding out of the hollow mounting seat 32 moves upwards, and the top end of the ejector rod 34 extends into the limiting slot 121 of the detaching seat 12. In this embodiment, the power device is a pneumatic turbine, and is fixed at the bottom of the hollow mounting seat 32 by a threaded connection through a handpiece interface of the pneumatic turbine.
The working process of the anti-loosening dental handpiece is as follows:
when the dental handpiece works, the power device is fixedly connected with the hollow mounting seat 32 on the handpiece 3, at the moment, under the pressure action of the power device, the ejector rod 34 protruding out of the hollow mounting seat 32 moves upwards, the top end of the ejector rod 34 extends into the limiting slot 121 of the detaching seat 12, so that the ejector rod 34 is fixed in the limiting slot 121 and is not easy to slide out, and the safety accident caused by looseness of a connecting part due to high-speed rotation is prevented. When the dental handpiece stopped working, dismantle power device after, ejector pin 34 moves down under the action of gravity and resets, makes ejector pin 34 break away from spacing slot 121, and rotatable dismantlement is realized with connecting seat 2 to aircraft nose 1, makes things convenient for aircraft nose 1, washs maintenance aircraft nose 1, prevents cross infection, and has prolonged dental handpiece's life.
The detachable structure is arranged, namely, the detachable and combined structure of the detachable seat 12 and the connecting seat 2 is added, and the cleaning and maintenance of the main parts after the operation are more convenient. The detachable connection mode of the detachable seat 12 and the connecting seat 2 can be a buckle type in the prior art, a local thread type, and can also be of the following structure: as shown in fig. 5-6, a limiting table 21 fastened with the disassembling base 12 is disposed at the top of the connecting base 2, and a limiting convex strip 22 is disposed on the limiting table 21 along the radial direction; a notch 122 and a sliding groove 123 communicated with the notch 122 are arranged on the lower edge of the disassembling seat 12; when the disassembling seat 12 is fastened on the limiting table 21 of the connecting seat 2, the limiting convex strip 22 enters the sliding groove 123 along the notch 122, and the disassembling seat 12 is rotated to limit the limiting convex strip 22 in the sliding groove 123.
In order to improve the strength of the detachable base 12, the position layout of the limiting slot 121 and the notch 122 of the detachable base 12 is optimized, and as a further preferable scheme, the limiting slot 121 and the notch 122 are overlapped, that is, the limiting slot 121 is also used as the notch 122.
As shown in fig. 5, in order to prevent the limiting protrusion 22 from slipping out of the sliding groove 123 and to prevent the connection portion from loosening due to high-speed rotation, an anti-slip groove 1231 is preferably provided in the sliding groove 123. The design of the guiding inclined plane 1232 is that when the connecting seat 2 is separated from the detaching seat 12, the limiting convex strip 22 slides out to the notch 122 along the guiding inclined plane 1232, so as to more smoothly abut against the top end of the ejector rod 34, so that the ejector rod 34 exits from the limiting slot 121, and the machine head 1 can be rotatably detached, thereby facilitating cleaning.
As a further preferable scheme, the dental handpiece further comprises a return spring 36, a mounting seat radial boss 321 is arranged on the outer wall of the hollow mounting seat 32, the spring is sleeved on the ejector rod 34 from the top of the ejector rod 34, the bottom end of the spring abuts against the ejector rod radial boss 341, and the top end of the spring abuts against the mounting seat radial boss 321. When the dental handpiece stops working and the power device is disassembled, the ejector rod 34 is reset under the action of the spring, and the handpiece 1 can be rotatably disassembled, so that the cleaning is convenient.
As a further preferable scheme, as shown in fig. 8-9, the handpiece 1 further comprises a movement assembly 13 and a transmission shaft 14; the movement assembly 13 comprises a front bearing 131, a rear bearing 132, a main shaft 133, a locking shaft 134 and a needle (not shown); a core cavity and a transmission shaft 14 cavity are formed in the handpiece shell 11; the front bearing 131, the rear bearing 132, the main shaft 133 and the locking shaft 134 are all arranged in the movement cavity; the transmission shaft 14 is arranged in the cavity of the transmission shaft 14; the inner walls of the front bearing 131 and the rear bearing 132 are sleeved on the outer surfaces of two ends of the main shaft 133, and the outer walls of the front bearing 131 and the rear bearing 132 are tightly attached to the movement cavity; the locking shaft 134 penetrates through and is fixed inside the main shaft 133, and one end of the locking shaft 134 extends out of the movement cavity; the sewing needle is in transmission connection with the locking shaft 134; a movement gear is arranged on the outer wall of the main shaft 133 and is positioned between the front bearing 131 and the rear bearing 132; one end of the transmission shaft 14 is in transmission connection with the core gear, and the other end of the transmission shaft is in transmission connection with the speed reducer.
As a further preferable scheme, as shown in fig. 7, the top of the speed reducer 33 is provided with a transmission tooth 331 in transmission connection with the bottom end of the transmission shaft 14, and the bottom of the speed reducer 33 is provided with a transmission tooth 331 in transmission connection with the power device.
As a further preferable scheme, as shown in fig. 8-10, the handpiece 1 further includes a front sealing rubber pad 135, a rear sealing rubber pad 136, a gasket 137, and a retainer ring 138; in order to realize the sealed effect of aircraft nose 1, through sealed cushion 135 before setting up, sealed cushion 136, gasket 137, retaining ring 138 after, realize double containment, prevent that steam from getting into the inside core that leads to of core and rustting, extension bearing life. The inner wall of the front sealing rubber pad 135 is sleeved on the outer wall of the locking shaft 134, and the outer wall of the front sealing rubber pad 135 is tightly attached to the machine core cavity; the inner wall of the rear sealing rubber gasket 136 is sleeved on the outer wall of the main shaft 133, and the outer wall of the rear sealing rubber gasket 136 is tightly attached to the movement cavity; the front sealing rubber gasket 135 and the rear sealing rubber gasket 136 are sequentially located at the outer sides of the front bearing 131 and the rear bearing 132; the gasket 137 is arranged between the front sealing rubber gasket 135 and the front bearing 131; the retainer ring 138 is disposed between the rear seal cushion 136 and the rear bearing 132.
Its operational environment of the movement assembly 13 of dental handpiece is mostly inside the oral cavity, and this service environment is comparatively moist and the bacterium is more. Therefore, the requirement on the sealing performance of the movement assembly 13 is high, if the sealing performance is poor, water vapor or bacteria easily enter the dental handpiece, and the dental handpiece needs to be reused, so that the movement assembly 13 is easily corroded or a large amount of bacteria easily grow due to the water vapor and the bacteria entering the dental handpiece, and the treatment and the use of doctors are not facilitated. This application dual-seal core subassembly 13 plays main sealed effect and sets up preceding sealed cushion 135 through both sides around the core casing, back sealed cushion 136, preceding sealed cushion 135, back sealed cushion 136 and core casing hug closely spacing combined action, because the inner circle of preceding bearing 131 and back bearing 132, the outer lane must have the gap with other part contact departments, present sealed cushion 135 and back sealed cushion 136 correspond and compress tightly preceding bearing 131 and back bearing 132, make the gap that the bloody water can't pass through between the bearing enter into part preceding bearing 131, in the cavity that forms between back bearing 132 and the main shaft 133, prevent the bearing, parts such as core gear are because water, vapour gets into and produces the corruption.
As a further preferable scheme, as shown in fig. 11, an annular boss 1351 is disposed on an outer side of the front sealing rubber cushion 135, and a limit groove 111 adapted to the annular boss 1351 is disposed at a position where an inner wall of the handpiece housing 11 is in close contact with an outer wall of the front sealing rubber cushion 135. The adaptation structure of annular boss 1351 and spacing groove 111 can make preceding sealed cushion 135 be connected more closely with the core casing to improve sealed degree.
As a further preferable mode, as shown in fig. 12, the longitudinal section of the retainer ring 138 is L-shaped, and the rear seal rubber 136 is confined in an L-shaped groove 1381 of the retainer ring 138. The retaining ring 138 is made of metal, the rear sealing rubber gasket 136 is accommodated in the L-shaped groove 1381, and the rear sealing rubber gasket 136 and the metal retaining ring 138 can be connected more tightly by the structure, so that the sealing degree is improved.
The working process of the double-seal core assembly 13 of the application is as follows: the main shaft 133 is arranged in the front bearing 131 and the rear bearing 132 in a penetrating way, and the sewing needle is fixed on a locking shaft 134 in the main shaft 133; when the device works, the power device is utilized to drive the main shaft 133 to rotate, so that the machine needle is driven to rotate, and the oral tooth cleaning treatment or polishing treatment is realized.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (8)
1. A detachable dental handpiece with a loosening-proof safety device is characterized by comprising a handpiece body, a connecting seat and a handpiece head; the connecting seat is fixed on the top of the machine body, and the machine head is detachably connected to the connecting seat;
the machine head comprises a machine head shell, a disassembling seat fixed at the bottom of the machine head shell, a machine core assembly, a transmission shaft, a front sealing rubber gasket, a rear sealing rubber gasket, a gasket and a retainer ring; the splitting seat is detachably connected to the connecting seat; a limiting slot is formed in the lower extension edge of the splitting seat;
the movement assembly comprises a front bearing, a rear bearing, a main shaft, a locking shaft and a machine needle; a machine core cavity and a transmission shaft cavity are formed in the machine head shell; the front bearing, the rear bearing, the main shaft and the locking shaft are all arranged in the machine core cavity; the transmission shaft is arranged in the transmission shaft cavity; the inner walls of the front bearing and the rear bearing are sleeved on the outer surfaces of two ends of the main shaft, and the outer walls of the front bearing and the rear bearing are tightly attached to the machine core cavity; the locking shaft penetrates through and is fixed inside the main shaft, and one end of the locking shaft extends out of the movement cavity; the sewing needle is in transmission connection with the locking shaft; the outer wall of the main shaft is provided with a core gear which is positioned between the front bearing and the rear bearing; one end of the transmission shaft is in transmission connection with the machine core gear, and the other end of the transmission shaft is in transmission connection with the speed reducer;
the inner wall of the front sealing rubber pad is sleeved on the outer wall of the locking shaft, and the outer wall of the front sealing rubber pad is tightly attached to the machine core cavity; the inner wall of the rear sealing rubber cushion is sleeved on the outer wall of the main shaft, and the outer wall of the rear sealing rubber cushion is tightly attached to the machine core cavity; the front sealing rubber gasket and the rear sealing rubber gasket are sequentially positioned on the outer sides of the front bearing and the rear bearing; the gasket is arranged between the front sealing rubber gasket and the front bearing; the retainer ring is arranged between the rear sealing rubber gasket and the rear bearing;
the machine body comprises a machine body shell, a hollow mounting seat, a speed reducer and an ejector rod; the connecting seat is fixed on the speed reducer, and the speed reducer is fixed on the hollow mounting seat; the outer shell of the machine body is sleeved on the outer walls of the hollow mounting seat and the speed reducer; the lower part of the hollow mounting seat is provided with a jack, and the connecting seat is provided with a jack; the ejector rod is provided with an ejector rod radial boss, the bottom end of the ejector rod is inserted into the jack of the hollow mounting seat and protrudes out of the hollow mounting seat, the ejector rod radial boss is abutted above the jack of the hollow mounting seat, and the top end of the ejector rod is inserted into the jack of the connecting seat; when the dental handpiece works, the power device is fixedly arranged on the hollow mounting seat of the handpiece body, so that the ejector rod protruding out of the hollow mounting seat moves upwards, and the top end of the ejector rod extends into the limiting slot of the detaching seat.
2. The detachable dental handpiece according to claim 1, wherein a limiting table fastened with the detachable base is provided at the top of the connecting base, and a limiting convex strip is provided on the limiting table in a protruding manner along a radial direction; a notch and a sliding groove communicated with the notch are arranged on the lower extension edge of the splitting seat; when the splitting seat is buckled on the limiting table of the connecting seat, the limiting convex strips enter the sliding groove along the notch, and the splitting seat is rotated to enable the limiting convex strips to be limited in the sliding groove.
3. The removable dental handpiece of claim 2, wherein the retaining socket coincides with the notch.
4. A detachable dental handpiece according to claim 2, wherein the slide groove is provided with an anti-slip groove and a guide slope.
5. The detachable dental handpiece of claim 1, further comprising a return spring, wherein the hollow mount has a mount radial boss on the outer wall thereof, the spring is inserted into the top rod from the top thereof, the bottom end of the spring abuts against the radial boss of the top rod, and the top end of the spring abuts against the mount radial boss.
6. The detachable dental handpiece of claim 1, wherein the top of the speed reducer is provided with a driving tooth drivingly connected with the bottom end of the driving shaft, and the bottom of the speed reducer is provided with a driving tooth drivingly connected with the power unit.
7. The detachable dental handpiece according to claim 1, wherein an annular boss is provided on the outer side of the front sealing rubber pad, and a limit groove adapted to the annular boss is provided on the inner wall of the handpiece housing and the outer wall of the front sealing rubber pad.
8. The removable dental handpiece of claim 1, wherein the retainer ring has an L-shaped longitudinal cross-section and the rear seal cushion is retained within the L-shaped groove of the retainer ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810988223.1A CN109199609B (en) | 2018-08-28 | 2018-08-28 | Take locking safety device that takes off's can dismantle dental handpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810988223.1A CN109199609B (en) | 2018-08-28 | 2018-08-28 | Take locking safety device that takes off's can dismantle dental handpiece |
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| Publication Number | Publication Date |
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| CN109199609A CN109199609A (en) | 2019-01-15 |
| CN109199609B true CN109199609B (en) | 2021-10-08 |
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| CN201810988223.1A Active CN109199609B (en) | 2018-08-28 | 2018-08-28 | Take locking safety device that takes off's can dismantle dental handpiece |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3964162A4 (en) * | 2020-07-20 | 2022-06-08 | Guilin Woodpecker Medical Instrument Co., Ltd. | Curved handpiece used for dental root canal therapy |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2076918A (en) * | 1936-03-20 | 1937-04-13 | George A Robison | Hose coupling |
| EP0525649A1 (en) * | 1991-07-23 | 1993-02-03 | Nakanishi Dental Mfg. Co. Ltd. | Dental handpiece having speed change assembly unit |
| US5466020A (en) * | 1994-12-30 | 1995-11-14 | Valleylab Inc. | Bayonet connector for surgical handpiece |
| CN102784008A (en) * | 2011-05-13 | 2012-11-21 | 株式会社中西 | Dental handpiece |
| CN206675601U (en) * | 2016-12-30 | 2017-11-28 | 佛山科学技术学院 | A kind of dismountable plantation mobile phone |
| CN207111698U (en) * | 2017-05-27 | 2018-03-16 | 佛山市彤鑫医疗器材股份有限公司 | A kind of combined bearing and apply its dental handpiece |
-
2018
- 2018-08-28 CN CN201810988223.1A patent/CN109199609B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2076918A (en) * | 1936-03-20 | 1937-04-13 | George A Robison | Hose coupling |
| EP0525649A1 (en) * | 1991-07-23 | 1993-02-03 | Nakanishi Dental Mfg. Co. Ltd. | Dental handpiece having speed change assembly unit |
| US5466020A (en) * | 1994-12-30 | 1995-11-14 | Valleylab Inc. | Bayonet connector for surgical handpiece |
| CN102784008A (en) * | 2011-05-13 | 2012-11-21 | 株式会社中西 | Dental handpiece |
| CN206675601U (en) * | 2016-12-30 | 2017-11-28 | 佛山科学技术学院 | A kind of dismountable plantation mobile phone |
| CN207111698U (en) * | 2017-05-27 | 2018-03-16 | 佛山市彤鑫医疗器材股份有限公司 | A kind of combined bearing and apply its dental handpiece |
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| Publication number | Publication date |
|---|---|
| CN109199609A (en) | 2019-01-15 |
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