CN211834772U - Dental handheld machine with large torque force - Google Patents
Dental handheld machine with large torque force Download PDFInfo
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- CN211834772U CN211834772U CN201921928425.3U CN201921928425U CN211834772U CN 211834772 U CN211834772 U CN 211834772U CN 201921928425 U CN201921928425 U CN 201921928425U CN 211834772 U CN211834772 U CN 211834772U
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Abstract
The utility model discloses a dental hand-held machine of big torsion, include: the handle part comprises a middle joint, a handle shell and a locking nut which are sequentially connected through threads from top to bottom, the front end of the middle joint is provided with a machine head, and a core assembly is arranged in the machine head; and the three-stage transmission mechanism is arranged in the middle joint and the handle shell, the front end of the three-stage transmission mechanism is meshed with the movement assembly through a gear, and the input end of the tail part of the three-stage transmission mechanism is connected with a pulling and inserting rod. Adopt above-mentioned technical scheme, because the middle part connects, handle shell and lock nut loop through threaded connection, the middle part connects the front end and is equipped with the aircraft nose, the inside core assembly that is equipped with of aircraft nose, tertiary drive mechanism sets up the inside that connects with handle shell at the middle part, the output of tertiary drive mechanism front end passes through gear engagement with core assembly and links to each other, adopts the driven mode of pinion, increases torsion, improves the rotational speed for core assembly can high-speed steady rotation.
Description
Technical Field
The utility model relates to a dentistry handheld machine technical field, in particular to dentistry handheld machine of big torsion.
Background
With the improvement of living standard of people, the requirement of people on the maintenance of teeth is also increased day by day. The teeth are an important organ of the face of people, and not only have the chewing function, but also are related to the beauty of people. The teeth are neat and beautiful in one mouth, and a bright color is added to the appearance of people.
The traditional tooth treatment and restoration tool is a dental handpiece, and people use the dental handpiece to maintain and restore teeth. However, most of the traditional dental handheld machines mainly adopt a pneumatic turbine, and during the use process of the pneumatic turbine, the back suction can be generated when the pneumatic turbine stops, and the back suction airflow entering the dental handpiece can pollute the comprehensive therapeutic apparatus and cause iatrogenic infection. Moreover, the pneumatic turbine adopted in the market at present has the defect that the rotating speed is too low, so that the dental handpiece can not stably rotate, the polishing difficulty is high, the dental handpiece is not leaned on, and the like.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a dental hand-held machine of big torsion to there is the rotational speed problem of crossing excessively in adopting pneumatic turbine to solve among the prior art.
In order to solve the technical problem, the utility model discloses a technical scheme does:
a high torque dental handpiece comprising: the handle part comprises a middle joint, a handle shell and a locking nut which are sequentially connected through threads from top to bottom, the front end of the middle joint is provided with a machine head, and a machine core assembly is arranged in the machine head; the three-stage transmission mechanism is arranged in the middle of the handle shell, the middle of.
Further, the tertiary drive mechanism includes: the first transmission shaft assembly is positioned in the middle joint, and a front end gear of the first transmission shaft assembly is meshed and connected with a connecting gear on the movement assembly; the second transmission shaft assembly is positioned in the middle joint, and a front end gear of the second transmission shaft assembly is meshed and connected with a rear end gear of the first transmission shaft assembly; the third transmission shaft assembly is located in the handle shell, the front end of the third transmission shaft assembly is connected with the tail end of the second transmission shaft assembly in an inserting mode, a gear at the front end of the third transmission shaft assembly is connected with a gear at the rear end of the second transmission shaft assembly in an engaging mode, and the rear end of the third transmission shaft assembly is connected with the front end of the pulling and inserting rod in an inserting mode.
Further, first transmission shaft subassembly includes that aircraft nose transmission shaft and cover establish the epaxial aircraft nose driving shaft sleeve of aircraft nose transmission, the front end of aircraft nose transmission shaft be equipped with on the core subassembly the aircraft nose tooth that connecting gear meshing is connected, the rear end of aircraft nose transmission shaft be equipped with the tail tooth that the front end gear of second driving shaft subassembly meshes mutually, the front end of aircraft nose driving shaft sleeve with aircraft nose tail end screw thread links to each other.
Furthermore, the second transmission shaft assembly comprises a middle shaft seat, a transmission middle shaft and a middle shaft sleeve sleeved on the transmission middle shaft, the transmission middle shaft is arranged inside the middle shaft seat through the middle shaft sleeve, the front end of the transmission middle shaft is provided with middle shaft sheet teeth connected with the tail teeth, and the rear end of the transmission middle shaft is provided with middle shaft tail teeth meshed with the front end gear of the third transmission shaft assembly.
Furthermore, the third transmission shaft assembly comprises an input shaft support, an input shaft and a positioning sleeve sleeved on the input shaft, the input shaft is arranged inside the input shaft support through the positioning sleeve, an input fluted disc is arranged at the front end of the input shaft, the input fluted disc is internally tangent and meshed with the tail teeth of the middle shaft, and the rear end of the input shaft is connected with the plugging rod in a plugging manner.
Furthermore, all gears in the three-stage transmission mechanism are provided with DLC coatings.
Further, the aircraft nose includes connecting portion and the installation department that is the setting of contained angle 45 with connecting portion, core assembly sets up inside the installation department.
Furthermore, a light-emitting component is arranged inside the middle joint and the handle shell and above the three-stage transmission mechanism, the front end of the light-emitting component penetrates through and is fixedly connected to the handpiece, and the rear end of the light-emitting component penetrates through and is fixedly connected to the bottom of the inner bushing sleeve.
Furthermore, a water-gas pipeline is arranged above the third-stage transmission mechanism and inside the middle joint and the handle shell, the front end of the water-gas pipeline is connected with the inside of the machine head, and the rear end of the water-gas pipeline is fixedly connected to the bottom of the inner lining sleeve.
Adopt above-mentioned technical scheme, because the middle part connects, handle shell and lock nut loop through threaded connection, the middle part connects the front end and is equipped with the aircraft nose, the inside core assembly that is equipped with of aircraft nose, tertiary drive mechanism sets up the inside that connects with handle shell at the middle part, the output of tertiary drive mechanism front end passes through gear engagement with core assembly and links to each other, adopts the driven mode of pinion, increases torsion, improves the rotational speed for core assembly can high-speed steady rotation.
Drawings
Fig. 1 is an exploded view of the present invention;
fig. 2 is a cross-sectional view of the present invention;
fig. 3 is an exploded schematic view of the three-stage transmission mechanism of the present invention;
fig. 4 is a schematic cross-sectional view of the first transmission shaft assembly of the present invention;
FIG. 5 is a schematic cross-sectional view of a second driveshaft assembly according to the present invention;
fig. 6 is a schematic sectional view of a third driveshaft assembly according to the present invention.
In the figures, 10-handle portion; 11-a middle joint; 12-a handle housing; 13-a locking nut; 14-a machine head; 141-a movement assembly; 1411-connecting gear; 142-a connecting portion; 143-a mounting portion; 20-a three-stage transmission mechanism; 21-a first driveshaft assembly; 211-handpiece drive shaft; 2111-nose teeth; 2112-tail tooth; 212-handpiece driving sleeve; 22-a second driveshaft assembly; 221-a middle shaft seat; 222-a transmission middle shaft; 2221-axial plate teeth; 2222-medial axis caudal teeth; 223-middle shaft sleeve; 23-a third driveshaft assembly; 231-input shaft support; 232-input shaft; 2321-inputting the fluted disc; 233-positioning sleeve; 24-a liner sleeve; 241-pulling and inserting the rod; 30-a light emitting component; 40-water gas pipeline.
Detailed Description
The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, 2 and 3, a dental hand-held machine of a large torque force includes a handle portion 10 and a three-stage transmission mechanism 20. The handle part 10 comprises a middle joint 11, a handle shell 12 and a locking nut 13 which are sequentially connected through threads from top to bottom, a machine head 14 is arranged at the front end of the middle joint 11, a machine core assembly 141 is arranged inside the machine head 14, and the machine core assembly 141 is used for installing a dental bur so as to drive the dental bur to rotate at a high speed.
In addition, the gears in the three-stage transmission 20 are each provided with a DLC coating. Because the DLC coating has high hardness and high elastic modulus, low friction factor, wear resistance and good vacuum tribology characteristics, the gear in the whole three-stage transmission mechanism 20 is more wear-resistant, oxidation-resistant and rust-resistant in the transmission process, and the service life of the three-stage transmission mechanism 20 is prolonged.
Specifically, the tertiary transmission mechanism 20 includes: a first driveshaft assembly 21, a second driveshaft assembly 22 and a third driveshaft assembly 23. Wherein, the first transmission shaft assembly 21 is positioned in the middle joint 11, and the front end gear of the first transmission shaft assembly 21 is meshed with the connecting gear 1411 on the movement assembly 141;
the second transmission shaft assembly 22 is positioned in the middle joint 11, and a front end gear of the second transmission shaft assembly 22 is meshed with a rear end gear of the first transmission shaft assembly 21;
the third transmission shaft assembly 23 is located in the handle housing 12, the front end of the third transmission shaft assembly 23 is connected with the tail end of the second transmission shaft assembly 22 in an inserting manner, a gear at the front end of the third transmission shaft assembly 23 is connected with a gear at the rear end of the second transmission shaft assembly 22 in an engaging manner, and the rear end of the third transmission shaft assembly 23 is connected with the front end of the inserting and pulling rod 241 in an inserting manner.
After the dental electric motor is connected with the tail end of the inserting and pulling rod 241, the third transmission shaft assembly 23, the second transmission shaft assembly 22 and the first transmission shaft assembly 21 are sequentially driven to carry out three-stage gear shaft transmission, and the dental electric motor can achieve a 1:4.2 speed increasing effect from the dental electric motor to the machine core assembly 141 through the modulus change of gears in the third transmission shaft assembly 23, the second transmission shaft assembly 22 and the first transmission shaft assembly 21, so that the transmission torque force is increased, the rotating speed is increased, and high-speed stable rotation is realized.
As shown in fig. 1, 2 and 4, specifically, the first transmission shaft assembly 21 includes a handpiece transmission shaft 211 and a handpiece transmission shaft sleeve 212 sleeved on the handpiece transmission shaft 211, a handpiece tooth 2111 engaged with the connecting gear 1411 on the core assembly 141 is provided at the front end of the handpiece transmission shaft 211, a tail tooth 2112 engaged with the front end gear of the second transmission shaft assembly 22 is provided at the rear end of the handpiece transmission shaft 211, and the front end of the handpiece transmission shaft sleeve 212 is in threaded connection with the tail end of the handpiece 14.
As shown in fig. 1, fig. 2 and fig. 5, specifically, the second transmission shaft assembly 22 includes a middle shaft seat 221, a transmission middle shaft 222 and a middle shaft sleeve 223 sleeved on the transmission middle shaft 222, the transmission middle shaft 222 is disposed inside the middle shaft seat 221 through the middle shaft sleeve 223, a middle shaft plate tooth 2221 connected to the tail tooth 2112 is disposed at the front end of the transmission middle shaft 222, and a middle shaft tail tooth 2222 engaged with the front end gear of the third transmission shaft assembly 23 is disposed at the rear end of the transmission middle shaft 222.
As shown in fig. 1, 2 and 6, specifically, the third transmission shaft assembly 23 includes an input shaft support 231, an input shaft 232, and a positioning sleeve 233 sleeved on the input shaft 232, the input shaft 232 is disposed inside the input shaft support 231 through the positioning sleeve 233, an input fluted disc 2321 is disposed at a front end of the input shaft 232, the input fluted disc 2321 is connected with a middle shaft tail 2222 in an internally toothed meshing manner, and a rear end of the input shaft 232 is connected with the plugging rod 241 in a plugging manner.
As shown in fig. 1, 2 and 3, in particular, the handpiece 14 includes a connecting portion 142 and a mounting portion 143 disposed at an angle of 45 ° with respect to the connecting portion 142, and the movement assembly 141 is disposed inside the mounting portion 143.
Specifically, a light emitting assembly 30 is disposed inside the middle connector 11 and the handle housing 12 and above the third-stage transmission mechanism 20, a front end of the light emitting assembly 30 penetrates through and is fixedly connected to the handpiece 14, a rear end of the light emitting assembly 30 penetrates through and is fixedly connected to the bottom of the lining sleeve 24, and the light emitting assembly 30 is specifically an optical fiber.
Specifically, a water and gas pipeline 40 is arranged inside the middle joint 11 and the handle shell 12 and above the three-stage transmission mechanism 20, the front end of the water and gas pipeline 40 is connected with the inside of the machine head 14, and the rear end of the water and gas pipeline 40 is fixedly connected to the bottom of the lining sleeve 24. Through the setting of aqueous vapor pipeline 40, can effectively reduce the temperature that middle part connects 11 and handle shell 12 inside, extension cell-phone life can also avoid scalding patient's oral cavity, has eliminated the potential safety hazard.
Adopt above-mentioned technical scheme, because the middle part connects 11, handle shell 12 and lock nut 13 loop through threaded connection, the middle part connects 11 front ends to be equipped with aircraft nose 14, the inside core assembly 141 that is equipped with of aircraft nose 14, tertiary drive mechanism 20 sets up in the inside that middle part connects 11 and handle shell 12, the output and the core assembly 141 of tertiary drive mechanism 20 front end pass through gear engagement and link to each other, adopt the driven mode of tooth axle, increase torsion, the rotational speed is improved, make core assembly can high-speed steady rotation.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.
Claims (9)
1. A high torque dental handpiece, comprising:
the handle part comprises a middle joint, a handle shell and a locking nut which are sequentially connected through threads from top to bottom, the front end of the middle joint is provided with a machine head, and a machine core assembly is arranged in the machine head;
the three-stage transmission mechanism is arranged in the middle of the handle shell, the middle of.
2. A high torque dental handpiece as claimed in claim 1, wherein the three stage drive mechanism comprises:
the first transmission shaft assembly is positioned in the middle joint, and a front end gear of the first transmission shaft assembly is meshed and connected with a connecting gear on the movement assembly;
the second transmission shaft assembly is positioned in the middle joint, and a front end gear of the second transmission shaft assembly is meshed and connected with a rear end gear of the first transmission shaft assembly;
the third transmission shaft assembly is located in the handle shell, the front end of the third transmission shaft assembly is connected with the tail end of the second transmission shaft assembly in an inserting mode, a gear at the front end of the third transmission shaft assembly is connected with a gear at the rear end of the second transmission shaft assembly in an engaging mode, and the rear end of the third transmission shaft assembly is connected with the front end of the pulling and inserting rod in an inserting mode.
3. The dental hand-held machine with large torsion according to claim 2, wherein the first transmission shaft assembly comprises a handpiece transmission shaft and a handpiece transmission shaft sleeve sleeved on the handpiece transmission shaft, the front end of the handpiece transmission shaft is provided with handpiece teeth meshed with the connecting gear on the movement assembly, the rear end of the handpiece transmission shaft is provided with tail teeth meshed with the front end gear of the second transmission shaft assembly, and the front end of the handpiece transmission shaft sleeve is in threaded connection with the tail end of the handpiece.
4. The dental handpiece with large torque force as claimed in claim 3, wherein the second driving shaft assembly includes a middle shaft seat, a driving middle shaft and a middle shaft sleeve sleeved on the driving middle shaft, the driving middle shaft is arranged inside the middle shaft seat through the middle shaft sleeve, the front end of the driving middle shaft is provided with middle shaft sheet teeth connected with the tail teeth, and the rear end of the driving middle shaft is provided with middle shaft tail teeth meshed with the front end gear of the third driving shaft assembly.
5. The dental hand-held machine with large torsion force according to claim 4, wherein the third transmission shaft assembly comprises an input shaft support, an input shaft and a positioning sleeve sleeved on the input shaft, the input shaft is arranged inside the input shaft support through the positioning sleeve, an input fluted disc is arranged at the front end of the input shaft, the input fluted disc is connected with the tail teeth of the central shaft in an internally-meshed manner, and the rear end of the input shaft is connected with the plugging rod in a plugging manner.
6. A high torque dental handpiece as claimed in claim 1, wherein the gears in the tertiary drive mechanism are provided with a DLC coating.
7. A high torque dental handpiece as claimed in claim 1, wherein the handpiece includes a connecting portion and a mounting portion disposed at an angle of 45 ° to the connecting portion, the cartridge assembly being disposed within the mounting portion.
8. The dental handpiece with large torsion according to claim 1, wherein a light emitting component is arranged inside the middle joint and the handle shell and above the three-stage transmission mechanism, the front end of the light emitting component penetrates through and is fixedly connected to the handpiece, and the rear end of the light emitting component penetrates through and is fixedly connected to the bottom of the inner bushing.
9. The dental handpiece with high torque force as claimed in claim 1, wherein a water and air pipeline is arranged inside the handle housing and above the tertiary transmission mechanism, the front end of the water and air pipeline is connected with the inside of the handpiece, and the rear end of the water and air pipeline is fixedly connected with the bottom of the inner bushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921928425.3U CN211834772U (en) | 2019-11-11 | 2019-11-11 | Dental handheld machine with large torque force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921928425.3U CN211834772U (en) | 2019-11-11 | 2019-11-11 | Dental handheld machine with large torque force |
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| Publication Number | Publication Date |
|---|---|
| CN211834772U true CN211834772U (en) | 2020-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921928425.3U Active CN211834772U (en) | 2019-11-11 | 2019-11-11 | Dental handheld machine with large torque force |
Country Status (1)
| Country | Link |
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| CN (1) | CN211834772U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111317583A (en) * | 2019-11-11 | 2020-06-23 | 佛山市耐可士医疗器械有限公司 | Dental handheld machine with large torque force |
-
2019
- 2019-11-11 CN CN201921928425.3U patent/CN211834772U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111317583A (en) * | 2019-11-11 | 2020-06-23 | 佛山市耐可士医疗器械有限公司 | Dental handheld machine with large torque force |
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