CN211834775U - Dental handpiece's tooth axle transmission structure - Google Patents
Dental handpiece's tooth axle transmission structure Download PDFInfo
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- CN211834775U CN211834775U CN201921928444.6U CN201921928444U CN211834775U CN 211834775 U CN211834775 U CN 211834775U CN 201921928444 U CN201921928444 U CN 201921928444U CN 211834775 U CN211834775 U CN 211834775U
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Abstract
The utility model discloses a dental handpiece's pinion drive structure, including first transmission pinion, second transmission pinion, third transmission pinion. The utility model has the advantages that: the lower end of a third transmission gear shaft is inserted with a pulling and inserting rod to be connected with a motor power source, an output tooth at the upper end of the third transmission gear shaft is meshed with a second transmission tail tooth at the lower end of the second transmission gear shaft, a transmission tooth at the upper end of the second transmission gear shaft is meshed with a first transmission tail tooth at the lower end of the first transmission gear shaft, a handpiece tooth at the upper end of the first transmission gear shaft is in transmission connection with a handpiece component of a dental handpiece, an acceleration mechanism is formed between the third transmission gear shaft and the second transmission gear shaft, the low-speed rotation of the motor can be converted to drive the high-speed rotation of a needle, the structure adopts a mechanical transmission acceleration mode, the transmission is stable, the beveling kinetic energy of high rotating speed and large torque can be continuously provided, and the treatment efficiency is effectively improved.
Description
Technical Field
The utility model relates to the field of dental equipment, in particular to dental handpiece's pinion drive structure.
Background
The dental handpiece is one of the most commonly used instruments in the dental industry as a dental instrument, and can be divided into a high-speed handpiece and a low-speed handpiece according to the rotating speed and the structure. The existing high-speed dental handpiece adopts the turbine type fan blade to rotate to drive the lathe needle to cut, the transmission mode has small torque and low rotating speed, and the lathe needle of the handpiece can not normally and stably rotate and cut under the condition of resistance, so that a doctor is low in efficiency and long in time in the operation and use process, the labor capacity of the doctor is increased, and more pains are brought to the patient.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, an object of the present invention is to provide a gear shaft transmission structure for a dental handpiece with a large torque and a more stable operation.
In order to achieve the above purpose, the technical scheme of the utility model is that:
a dental handpiece gear shaft transmission structure comprising: the upper end of the first transmission gear shaft is provided with a nose tooth protruding out of the upper end of the first transmission gear shaft, and the lower end of the first transmission gear shaft is provided with a first transmission tail tooth protruding out of the lower end of the first transmission gear shaft; the transmission shaft seat is of a boss structure, a blind hole is formed in the lower end face of the transmission shaft seat, a second transmission gear shaft penetrates through the transmission shaft seat, transmission teeth protruding out of the upper end of the transmission shaft seat are arranged at the upper end of the second transmission gear shaft and meshed with the first transmission tail teeth, and the lower end of the second transmission gear shaft extends into the blind hole and is provided with second transmission tail teeth; the upper end of the connecting shaft sleeve is inserted into the blind hole, a third transmission gear shaft is sleeved inside the connecting shaft sleeve, output teeth connected with the second transmission tail teeth in a meshed mode are arranged at the upper end of the third transmission gear shaft, and inserting and pulling rods are arranged at the lower end of the third transmission gear shaft in an inserted mode.
Furthermore, the first transmission gear shaft comprises a first shaft sleeve and a first transmission shaft, the first transmission shaft is rotatably installed in the first shaft sleeve through a bearing, the machine head gear is sleeved at the upper end of the first transmission shaft, the first transmission tail gear is arranged at the lower end of the first transmission shaft, and the first transmission tail gear and the first transmission shaft are of an integrated structure.
Further, the outer peripheral surface of the first shaft sleeve close to the upper end of the first shaft sleeve is provided with connecting threads.
Further, the second transmission gear shaft comprises a second shaft sleeve and a second transmission shaft, an annular groove is formed in the outer peripheral surface of the second shaft sleeve, the second transmission shaft is installed in the second shaft sleeve in a rotating mode through a bearing, the transmission teeth are sleeved on the upper end of the second transmission shaft, the lower end of the second transmission shaft is provided with the second transmission tail teeth, and the second transmission tail teeth and the second transmission shaft are of an integrated structure.
Furthermore, a threaded hole is formed in one side of the upper portion of the transmission shaft seat in parallel and transversely to the annular groove, a locking nut is arranged in the threaded hole, a spring clamping bead is arranged at one end of the locking nut, and the hemispherical surface of the spring clamping bead is clamped in the annular groove.
Further, third transmission gear shaft includes third axle sleeve and third transmission shaft, the third axle sleeve passes through the bearing housing and establishes on the third transmission shaft, third transmission shaft upper end is equipped with the output tooth, output tooth protrusion in third axle sleeve upper end, the third transmission shaft with output tooth structure as an organic whole.
Furthermore, the inside of the third transmission shaft is of a hollow structure, and the output gear is a conical annular gear.
Further, the speed increasing ratio of the third transmission gear shaft transmitting power to the first transmission gear shaft through the second transmission gear shaft is 1: 4.2.
furthermore, DLC coatings are arranged on the machine head teeth, the first transmission tail teeth, the transmission teeth, the second transmission tail teeth and the output teeth.
The utility model has the advantages that: the lower end of a third transmission gear shaft is inserted with a pulling and inserting rod to be connected with a motor power source, an output tooth at the upper end of the third transmission gear shaft is meshed with a second transmission tail tooth at the lower end of a second transmission gear shaft, a transmission tooth at the upper end of the second transmission gear shaft is meshed with a first transmission tail tooth at the lower end of a first transmission gear shaft, a handpiece tooth at the upper end of the first transmission gear shaft is in transmission connection with a handpiece component of a dental handpiece, a speed increasing mechanism is formed by gear modulus change between the third transmission gear shaft, the second transmission gear shaft and the first transmission gear shaft, the low-speed rotation of the motor can be converted to drive the high-speed rotation of a needle, the structure adopts a mechanical transmission speed increasing mode, the transmission is stable, the beveling kinetic energy of high rotating speed and large torque can be continuously provided, and the treatment efficiency is.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the exploded structure of FIG. 1;
FIG. 3 is a cross-sectional view of FIG. 1;
fig. 4 is an enlarged view of a portion a in fig. 3.
In the drawings, 1 — first drive gear shaft; 10-a first sleeve; 101-connecting screw thread; 11-a first drive shaft; 12-nose teeth; 13-first drive tail tooth; 2-a transmission shaft seat; 201-blind hole; 202-a threaded hole; 203-locking nut; 204-spring snap bead; 20-a second drive gear shaft; 21-a second shaft sleeve; 211-annular groove; 22-a second drive shaft; 23-a gear tooth; 24-a second drive tail tooth; 3-connecting a shaft sleeve; 30-a third drive gear shaft; 31-a third sleeve; 32-a third drive shaft; 33-output tines; 34-pulling the inserted rod.
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.
The utility model discloses a tooth axle transmission structure of dental handpiece is applicable to the drive part in the handheld apparatus of angle of elevation dental, belongs to tooth axle transmission principle.
As shown in fig. 1-3, a gear shaft transmission structure of a dental handpiece comprises a first transmission gear shaft 1, a transmission gear shaft seat 2 and a coupling sleeve 3, wherein the upper end of the first transmission gear shaft 1 is provided with a handpiece gear 12 protruding out of the upper end of the first transmission gear shaft 1, and the lower end of the first transmission gear shaft 1 is provided with a first transmission tail gear 13 protruding out of the lower end of the first transmission gear shaft 1;
the transmission shaft seat 2 is of a boss structure, a blind hole 201 is formed in the lower end face of the transmission shaft seat 2, a second transmission gear shaft 20 penetrates through the transmission shaft seat 2, a transmission gear 23 protruding out of the upper end of the transmission shaft seat 2 is arranged at the upper end of the second transmission gear shaft 20, the transmission gear 23 is meshed with the first transmission tail gear 13, the lower end of the second transmission gear shaft 20 extends into the blind hole 201, and a second transmission tail gear 24 is arranged at the lower end of the second transmission gear shaft;
the upper end of the coupling sleeve 3 is inserted into the blind hole 201 to be connected with the transmission shaft seat 2 in an inserting mode, a third transmission gear shaft 30 is sleeved inside the coupling sleeve 3, an output gear 33 meshed with the second transmission tail gear 24 is arranged at the upper end of the third transmission gear shaft 30, and a pulling and inserting rod 34 is arranged at the lower end of the third transmission gear shaft 30 in an inserting mode and used for being connected with a motor power source.
A speed increasing mechanism is formed by the gear module change among the third transmission gear shaft 30, the second transmission gear shaft 20 and the first transmission gear shaft 1, the speed increasing ratio is 1:4.12, the low-speed rotation of a motor can be converted to drive the high-speed rotation of a needle, the structure adopts a mechanical transmission speed increasing mode, the transmission is stable, and high rotating speed and high torque can be continuously provided.
Specifically, first transmission gear shaft 1 includes first axle sleeve 10 and first transmission shaft 11, and first transmission shaft 11 passes through the bearing and rotates and install in first axle sleeve 10, and 11 upper end covers of first transmission shaft are equipped with first tooth 12, and this first tooth 12 is arranged in connecting the core assembly that the drive motor needle rotated among the dental handpiece, and 11 lower extremes of first transmission shaft are equipped with first transmission tail tooth 13, and first transmission tail tooth 13 and first transmission shaft 11 are structure as an organic whole.
As a further technical solution of this embodiment, the first sleeve 10 is provided with a connecting thread 101 on its outer circumference near its upper end, the connecting thread 101 being used for connecting with a handpiece on a dental handpiece.
Specifically, the second transmission gear shaft 20 includes a second shaft sleeve 21 and a second transmission shaft 22, an annular groove 211 is formed in the outer peripheral surface of the second shaft sleeve 21, the second transmission shaft 22 is rotatably installed in the second shaft sleeve 21 through a bearing, a transmission gear 23 is sleeved on the upper end of the second transmission shaft 22, a second transmission tail gear 24 is arranged at the lower end of the second transmission shaft 22, and the second transmission tail gear 24 and the second transmission shaft 22 are of an integrated structure.
As a further technical scheme of the embodiment, a threaded hole 202 is formed in one side of the upper portion of the transmission shaft seat 2 in parallel and transversely to the annular groove 211, a locking nut 203 is arranged in the threaded hole 202, a spring clamping ball 204 is arranged at one end of the locking nut 203, and a hemispherical surface of the spring clamping ball 204 is clamped in the annular groove 211. The second sleeve 21 is fixed in the transmission shaft seat 2 by the lock nut 203, and the second sleeve 21 itself does not rotate.
Specifically, the third transmission gear shaft 30 includes a third shaft sleeve 31 and a third transmission shaft 32, the third shaft sleeve 31 is sleeved on the third transmission shaft 32 through a bearing, an output gear 33 is arranged at the upper end of the third transmission shaft 32, the output gear 33 protrudes out of the upper end of the third shaft sleeve 31, and the third transmission shaft 32 and the output gear 33 are of an integral structure.
As a further technical scheme of the embodiment, the interior of the third transmission shaft 32 is of a hollow structure, and the output gear 33 is a conical ring gear.
Specifically, the speed increasing ratio of the third transmission gear 30 transmitting power to the first transmission gear 1 through the second transmission gear 20 is 1: 4.2, the specific principle is that the original rotating speed of the motor sequentially passes through the gear module change from the output gear 33, the second transmission tail gear 24, the transmission gear 23, the first transmission tail gear 13 to the machine head gear 12 to form a speed increasing mechanism.
Specifically, the head tooth 12, the first transmission tail tooth 13, the transmission tooth 23, the second transmission tail tooth 24 and the output tooth 33 are all 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 machine head teeth 12, the first transmission tail teeth 13, the transmission teeth 23, the second transmission tail teeth 24 and the output teeth 33 are more wear-resistant, oxidation-resistant and rust-resistant in the meshing transmission process, and the service life of the whole transmission structure is prolonged.
The utility model has the advantages that: the lower end of a third transmission gear shaft 30 is provided with a pulling and inserting rod 34 in an inserting mode, the pulling and inserting rod is connected with a motor power source in an inserting mode, an output tooth 33 at the upper end of the third transmission gear shaft 30 is meshed with a second transmission tail tooth 24 at the lower end of a second transmission gear shaft 20, a transmission tooth 23 at the upper end of the second transmission gear shaft 20 is meshed with a first transmission tail tooth 13 at the lower end of a first transmission gear shaft 1, a machine head tooth 12 at the upper end of the first transmission gear shaft 1 is in transmission connection with a machine core assembly of a dental handpiece, an acceleration mechanism is formed among the third transmission gear shaft 30, the second transmission gear shaft 20 and the first transmission gear shaft 1, low-speed rotation of the motor can be converted to drive high-speed rotation of a needle, the structure adopts a mechanical transmission mode, transmission is stable, high-speed and high-torque oblique cutting.
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 dental handpiece gear shaft transmission structure, comprising:
the upper end of the first transmission gear shaft is provided with a nose tooth protruding out of the upper end of the first transmission gear shaft, and the lower end of the first transmission gear shaft is provided with a first transmission tail tooth protruding out of the lower end of the first transmission gear shaft;
the transmission shaft seat is of a boss structure, a blind hole is formed in the lower end face of the transmission shaft seat, a second transmission gear shaft penetrates through the transmission shaft seat, transmission teeth protruding out of the upper end of the transmission shaft seat are arranged at the upper end of the second transmission gear shaft and meshed with the first transmission tail teeth, and the lower end of the second transmission gear shaft extends into the blind hole and is provided with second transmission tail teeth;
the upper end of the connecting shaft sleeve is inserted into the blind hole, a third transmission gear shaft is sleeved inside the connecting shaft sleeve, output teeth connected with the second transmission tail teeth in a meshed mode are arranged at the upper end of the third transmission gear shaft, and inserting and pulling rods are arranged at the lower end of the third transmission gear shaft in an inserted mode.
2. A dental handpiece gear shaft transmission structure according to claim 1, wherein the first transmission gear shaft includes a first sleeve and a first transmission shaft, the first transmission shaft is rotatably mounted in the first sleeve through a bearing, the head gear is sleeved on the first transmission shaft, the first transmission tail gear is provided at the lower end of the first transmission shaft, and the first transmission tail gear and the first transmission shaft are of an integral structure.
3. A dental handpiece gear shaft transmission structure according to claim 2, wherein the first sleeve has a connecting screw thread on an outer peripheral surface thereof near an upper end thereof.
4. The dental handpiece gear shaft transmission structure according to claim 1, wherein the second transmission gear shaft comprises a second sleeve and a second transmission shaft, an annular groove is formed in the outer peripheral surface of the second sleeve, the second transmission shaft is rotatably mounted in the second sleeve through a bearing, the transmission teeth are sleeved on the upper end of the second transmission shaft, the second transmission tail teeth are formed in the lower end of the second transmission shaft, and the second transmission tail teeth and the second transmission shaft are of an integral structure.
5. The dental handpiece gear shaft transmission structure as claimed in claim 4, wherein a threaded hole is formed in one side of the upper portion of the transmission shaft seat in parallel with the annular groove, a lock nut is disposed in the threaded hole, a spring clip bead is disposed at one end of the lock nut, and a hemispherical surface of the spring clip bead is clipped in the annular groove.
6. The dental handpiece gear shaft transmission structure according to claim 1, wherein the third transmission gear shaft comprises a third shaft sleeve and a third transmission shaft, the third shaft sleeve is sleeved on the third transmission shaft through a bearing, the upper end of the third transmission shaft is provided with the output tooth, the output tooth protrudes out of the upper end of the third shaft sleeve, and the third transmission shaft and the output tooth are of an integral structure.
7. A dental handpiece gear shaft transmission structure as claimed in claim 6, wherein the third transmission shaft is hollow inside, and the output gear is a cone-shaped annular gear.
8. A dental handpiece gear shaft transmission structure according to claim 1, wherein the third transmission gear shaft transmits power to the first transmission gear shaft through the second transmission gear shaft at a speed increasing ratio of 1: 4.2.
9. the dental handpiece gear shaft transmission structure according to claim 1, wherein the handpiece teeth, the first transmission tail teeth, the transmission teeth, the second transmission tail teeth and the output teeth are all provided with a DLC coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921928444.6U CN211834775U (en) | 2019-11-11 | 2019-11-11 | Dental handpiece's tooth axle transmission structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921928444.6U CN211834775U (en) | 2019-11-11 | 2019-11-11 | Dental handpiece's tooth axle transmission structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211834775U true CN211834775U (en) | 2020-11-03 |
Family
ID=73218715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921928444.6U Active CN211834775U (en) | 2019-11-11 | 2019-11-11 | Dental handpiece's tooth axle transmission structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211834775U (en) |
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2019
- 2019-11-11 CN CN201921928444.6U patent/CN211834775U/en active Active
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