CN108105339B - Dental handpiece speed-increasing straight machine - Google Patents
Dental handpiece speed-increasing straight machine Download PDFInfo
- Publication number
- CN108105339B CN108105339B CN201810133839.0A CN201810133839A CN108105339B CN 108105339 B CN108105339 B CN 108105339B CN 201810133839 A CN201810133839 A CN 201810133839A CN 108105339 B CN108105339 B CN 108105339B
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- gear
- output shaft
- dental handpiece
- carrier
- transmission mechanism
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- 230000005540 biological transmission Effects 0.000 claims abstract description 65
- 230000007246 mechanism Effects 0.000 claims abstract description 31
- 238000005299 abrasion Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 230000001965 increasing effect Effects 0.000 description 15
- 238000011282 treatment Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000012377 drug delivery Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
- F16H1/22—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C3/00—Dental tools or instruments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
Landscapes
- Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Engineering & Computer Science (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Epidemiology (AREA)
- Dentistry (AREA)
- Mechanical Engineering (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 dental handpiece speed-increasing straight machine which comprises an input shaft, a first gear, a carrier gear transmission mechanism, a second gear and an output shaft, wherein the input shaft is connected with the first gear, one end of the carrier gear transmission mechanism is in transmission connection with the first gear, the other end of the carrier gear transmission mechanism is in transmission connection with the second gear, and the second gear is sleeved outside the output shaft. Therefore, the setting of the carrier gear transmission mechanism not only realizes the transmission connection between the input shaft and the output shaft of the dental handpiece direct machine, but also enables the input shaft and the output shaft to transmit on the same straight line, simplifies the internal structure, greatly saves the occupied space, improves the use comfort, adopts the gear transmission connection between the third gear and the first gear as well as between the fourth gear and the second gear, and the two groups of gears can respectively have larger contact areas, reduce the moment acted on the teeth, further reduce the abrasion of the gears, prolong the service life, simultaneously effectively increase the rotation speed of the output shaft and achieve the speed-increasing effect.
Description
Technical Field
The invention relates to a dental handpiece, in particular to a dental handpiece speed-increasing straight machine.
Background
The dental handpiece is divided into a high-speed dental handpiece and a low-speed dental handpiece, and the rotating speed of the high-speed dental handpiece reaches 35-42 ten thousand revolutions per minute, and is mainly used for treatment and repair such as punching, cutting and the like; while low speed dental hand pieces are mainly used for drilling, grinding and cutting treatments. The low-speed mobile phone is divided into a straight machine and a bending machine, wherein the straight machine is used for polishing and is mainly used for external treatment and the bending machine is mainly used for internal treatment.
Most of the existing dental handpieces capable of increasing speed are bending machines, but the input shaft and the output shaft of the bending machines are not driven on the same straight line, so that the dental handpieces are not attractive in appearance and poor in use comfort, and not only occupy space and are complex in structure.
Disclosure of Invention
The invention aims to provide a dental handpiece speed-increasing straight machine which can at least solve one of the problems.
In order to achieve the above object, according to one aspect of the present invention, there is provided a speed-increasing direct drive for a dental handpiece, including an input shaft, a first gear, a carrier gear transmission mechanism, a second gear and an output shaft, wherein the input shaft is connected with the first gear, one end of the carrier gear transmission mechanism is in transmission connection with the first gear, the other end is in transmission connection with the second gear, the second gear is sleeved outside the output shaft, the carrier gear transmission mechanism includes a third gear, a fourth gear and a connecting shaft, the third gear and the fourth gear are sleeved at two ends of the connecting shaft, the third gear is meshed with the first gear, and the fourth gear is meshed with the second gear.
Therefore, the setting of the carrier gear transmission mechanism not only realizes the transmission connection between the input shaft and the output shaft of the dental handpiece direct machine, but also enables the input shaft and the output shaft to transmit on the same straight line, simplifies the internal structure, greatly saves the occupied space, improves the use comfort, adopts the gear transmission connection between the third gear and the first gear as well as between the fourth gear and the second gear, and the two groups of gears can respectively have larger contact areas, reduce the moment acted on the teeth, further reduce the abrasion of the gears, prolong the service life, simultaneously effectively increase the output rotating speed and achieve the speed-increasing effect.
In some embodiments, the first gear is an internal gear and the third gear is a spur gear. Therefore, the third gear is internally meshed with the first gear, teeth can be tightly meshed with each other, pure rolling transmission is realized, abrasion of the gears is effectively reduced, and service life is prolonged.
In some embodiments, the carrier gear train is one or two or three. Therefore, the number of the carrier gear transmission mechanisms can be set according to the needs, different rotating speeds can be achieved, different rotating speeds can be suitable for different operations, and the practicability is greatly improved.
In some embodiments, the dental handpiece speed increasing direct drive further comprises a handpiece, a first housing and a second housing, the first housing is connected to the handpiece, the second housing is connected to the first housing, and the input shaft, the output shaft and the carrier gear transmission are all located in a space formed by the handpiece, the first housing and the second housing. Therefore, the transmission structures such as the input shaft, the output shaft and the carrier gear transmission mechanism are all located in the space formed by the machine head, the first shell and the second shell, so that the transmission structures can be effectively protected, and dust and impurities are prevented from falling into the transmission structures to affect the use of the transmission structures.
In some embodiments, a support block is disposed within the first housing, the support block being disposed about the periphery of the connecting shaft. The support block is thereby used to support the connection shaft, thereby ensuring that the connection shaft is firmly rotated within the first housing of the dental handpiece.
In some embodiments, a first bearing is disposed in the first housing, the first bearing is sleeved outside the connecting shaft, and the first bearing is matched with the supporting block. From this, the supporting shoe can support first bearing, and outside the connecting axle was located to first bearing housing, can avoid the connecting axle direct to contact with the supporting shoe, reduce friction, noise reduction, can realize the rotatable installation of connecting axle simultaneously.
In some embodiments, the dental handpiece speed increasing straight machine further comprises a fixing sleeve, the fixing sleeve is arranged between the output shaft and the second shell, the fixing sleeve is matched with the output shaft, and one end of the fixing sleeve is connected with the first shell. Therefore, the output shaft is positioned in the fixed sleeve and is directly matched with the fixed sleeve, so that the direct structure of the dental handpiece is simplified, the installation gap is reduced, and the noise of the dental handpiece during working can be reduced to a great extent.
The beneficial effects of the invention are as follows: one end of the carrier gear transmission mechanism is in transmission connection with the first gear, the other end of the carrier gear transmission mechanism is in transmission connection with the second gear, the first gear is in transmission connection with the input shaft, the second gear is in transmission connection with the output shaft, the carrier gear transmission mechanism is arranged, not only is the transmission connection between the input shaft and the output shaft of the dental handpiece direct machine realized, but also the input shaft and the output shaft are in transmission on the same straight line, the internal structure is simplified, the occupied space is greatly saved, and the use comfort is improved; the third gear is connected with the first gear and the fourth gear and the second gear in a gear transmission way, the two groups of gears can respectively have larger contact areas, the moment acting on the teeth is reduced, the abrasion of the gears is further reduced, the service life is prolonged, the output rotating speed can be effectively increased, and the speed increasing effect is achieved; the first gear is an internal gear, the third gear is a straight gear, the third gear is internally meshed with the two gears of the first gear, the teeth can be tightly meshed, pure rolling transmission is realized, abrasion of the gears is effectively reduced, and the service life is prolonged; the dental handpiece speeding up straight machine comprises a fixed sleeve, wherein an output shaft is positioned in the fixed sleeve and is directly matched with the fixed sleeve, so that the straight machine structure of the dental handpiece is simplified, the installation gap is reduced, and the noise of the dental handpiece during working can be reduced to a great extent. Therefore, the speed-increasing straight machine for the dental handpiece has the advantages of simple structure, space saving, high use comfort, long service life, low noise and the like.
Drawings
FIG. 1 is a schematic view of a speed increasing straight machine for a dental handpiece according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the speed increaser of the dental handpiece of FIG. 1;
FIG. 3 is an enlarged schematic view of portion A of the speed increaser of the dental handpiece of FIG. 2;
FIG. 4 is a schematic diagram of the fourth gear and the second gear of the speed increaser of the dental handpiece of embodiment 2;
fig. 5 is a schematic diagram of the fourth gear and the second gear of the speed increasing gear of the dental handpiece of embodiment 3.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
Example 1
Fig. 1 to 3 schematically show a dental handpiece speed increasing straightener according to an embodiment of the present invention.
As shown in fig. 1 and 2, the dental handpiece speed increasing straight machine comprises an input shaft 1, a first gear 2, a carrier gear transmission mechanism 3, a second gear 4, an output shaft 5, a handpiece 6, a first housing 7 and a second housing 8. The first housing 7 is connected to the handpiece 6 and the second housing 8 is connected to the first housing 7. The input shaft 1, the first gear 2, the carrier gear transmission 3, the second gear 4 and the output shaft 5 are all located in a space formed by the machine head 6, the first housing 7 and the second housing 8. The input shaft 1 is connected with a first gear 2, one end of a carrier gear transmission mechanism 3 is in transmission connection with the first gear 2, and the other end of the carrier gear transmission mechanism is in transmission connection with a second gear 4. One end of the output shaft 5 is provided with a step structure, the second gear 4 is sleeved outside the step structure at one end of the output shaft 5, and the inner wall of the second gear 4 is tightly fixed and attached to the outer wall of the step structure.
As shown in fig. 3, the carrier gear transmission mechanism 3 includes a third gear 31, a fourth gear 32, and a connecting shaft 33. The third gear 31 and the fourth gear 32 are sleeved at two ends of the connecting shaft 33 and are fixedly connected with the connecting shaft 33 into a whole. The third gear 31 is meshed with the first gear 2 and the fourth gear 32 is meshed with the second gear 4. The setting of the carrier gear transmission mechanism 3 not only realizes the transmission connection between the input shaft 1 and the output shaft 5 of the dental handpiece direct drive machine, but also ensures that the input shaft 1 and the output shaft 5 are transmitted on the same straight line, simplifies the internal structure, greatly saves the occupied space and improves the use comfort. The third gear 31 is connected with the first gear 2, the fourth gear 32 is connected with the second gear 4 by adopting gear transmission, the two groups of gears can respectively have larger contact areas, the moment acting on the teeth is reduced, the abrasion of the gears is further reduced, the service life is prolonged, the output rotating speed can be effectively increased, and the speed increasing effect is achieved.
The first gear 2 of the present embodiment is a power input gear and the first gear 2 is an internal gear, while the second gear 4 is a power output gear, and the second gear 4, the third gear 31, and the fourth gear 32 are spur gears. The number of the carrier gear transmission mechanisms 3 in the present embodiment is two. Two ends of the two carrier gear transmission mechanisms 3 are in transmission connection with the first gear 2 and the second gear 4. Thus, the transmission ratio of the output shaft 5 to the input shaft 1 is 2:1, i.e. the ratio of the speeds of the output end to the input end is 2:1.
The first housing 7 of the present embodiment is provided with a support block 71, and the support block 71 is provided on the outer periphery of the connection shaft 33. The first housing 7 is provided with a first bearing 72, the first bearing 72 is sleeved outside the connecting shaft 33, and the first bearing 72 is matched with the supporting block 71. The support block 71 is used to support the connection shaft 33, thereby ensuring a stable rotation of the connection shaft 33 within the first housing 7 of the dental handpiece.
The first housing 7 of the present embodiment is further provided with a plurality of second bearings 12, and the second bearings 12 are sleeved on the outer periphery of the input shaft 1, and are used for supporting and protecting the input shaft 1, so as to ensure that the input shaft 1 rotates stably in the first housing 7 of the dental handpiece. The third bearing 13 is arranged in the handpiece 6, and the third bearing 13 is sleeved on the periphery of the output shaft 5 and is used for supporting and protecting the output shaft 5, so that the output shaft 5 is ensured to stably rotate in the handpiece 6 of the dental handpiece.
The dental handpiece speed increasing straight machine of the embodiment is also provided with a needle 11, one end of the needle 11 extends out of the machine head 6, and the other end of the needle 11 penetrates through the machine head 6 and is fixed on the output shaft 5. Therefore, the output shaft 5 can drive the needle 11 to rotate, and one end of the needle 11 extending out of the machine head 6 is used for being externally connected with equipment such as a scalpel and the like, so that the functions of cutting, polishing and the like in operation can be realized.
The dental handpiece speed-increasing straight machine further comprises a fixing sleeve 9, the fixing sleeve 9 is arranged between the output shaft 5 and the second shell 8, the fixing sleeve 9 is matched with the output shaft 5, and one end of the fixing sleeve 9 is connected with the first shell 7. The output shaft 5 is located fixed cover 9, and directly cooperatees with fixed cover 9, has simplified the straight quick-witted structure of dental handpiece, has reduced the installation space, can reduce the noise of dental handpiece during operation to a great extent.
The working principle of the dental handpiece speed-increasing straight machine of the embodiment is as follows:
The input shaft 1 rotates under the drive of power to drive the first gear 2 connected with the input shaft to rotate, the first gear 2 drives the third gear 31 of the carrier gear transmission mechanism 3 to rotate to drive the connecting shaft 33 to rotate, the fourth gear 32 also rotates along with the connecting shaft, the fourth gear 32 drives the second gear 4 sleeved on the output shaft 5 to rotate to drive the output shaft 5 to rotate, further the internal transmission of the dental handpiece is completed, and the functions of cutting and polishing in the operation are realized through the rotating shaft connected with the output shaft 5.
In addition, the speed-increasing direct machine of the dental handpiece of the embodiment further comprises a drug delivery pipe 10, wherein the drug delivery pipe 10 is arranged on the dental handpiece, and the middle part of the drug delivery pipe 10 is fixed on the handpiece 6 at one end of the dental handpiece. The outer wall of the water pipe 10 is attached to the outer wall of the handpiece 6 of the dental handpiece, one end of the water pipe 10 is arranged above the needle 11, and the other end of the water pipe is connected with external liquid medicine supply equipment. The drug delivery tube 10 is used for delivering liquid medicine, and can be conveniently and simultaneously injected with the liquid medicine for treatment when a dental handpiece is used for operation.
Example 2
The present embodiment is basically the same as the speed increasing straight machine structure of the dental handpiece in embodiment 1, and differs in that: the number of carrier gear trains 3 varies. As shown in fig. 4, the carrier gear transmission mechanism 3 of the present embodiment is one. The carrier gear transmission 3 includes a third gear 31, a fourth gear 32, and a connecting shaft 33. The third gear 31 and the fourth gear 32 are sleeved at two ends of the connecting shaft 33, the third gear 31 is meshed with the first gear 2, and the fourth gear 32 is meshed with the second gear 4. Thus, the transmission ratio of the output shaft 5 to the input shaft 1 is 1:1, i.e. the ratio of the speeds of the output end to the input end is 1:1.
Example 3
The present embodiment is basically the same as the speed increasing straight machine structure of the dental handpiece in embodiment 1, and differs in that: the number of carrier gear trains 3 varies. As shown in fig. 5, the number of the carrier gear transmission mechanisms 3 in the present embodiment is three. Each of the carrier gear mechanisms 3 includes a third gear 31, a fourth gear 32, and a connecting shaft 33. The third gear 31 and the fourth gear 32 are sleeved at two ends of the connecting shaft 33, the third gear 31 is meshed with the first gear 2, and the fourth gear 32 is meshed with the second gear 4. Thus, the transmission ratio of the output shaft 5 to the input shaft 1 is 3:1, i.e. the ratio of the speeds of the output end to the input end is 3:1.
As shown in fig. 3 to 5, the number of the carrier gear transmission mechanisms 3in the speed increasing straight machine of the dental handpiece of the present invention may be one, two or three. Therefore, the number of the carrier gear transmission mechanisms 3 can be set according to actual needs, so that different rotating speeds of the dental handpiece can be realized, the dental handpiece is further suitable for different operations, and the practicability and the application range are greatly improved.
What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.
Claims (1)
1. The dental handpiece speed-increasing straight machine is characterized by comprising an input shaft (1), a first gear (2), a carrier gear transmission mechanism (3), a second gear (4), an output shaft (5), a machine head (6), a first shell (7), a second shell (8) and a fixed sleeve (9), wherein the input shaft (1) is connected with the first gear (2), one end of the carrier gear transmission mechanism (3) is in transmission connection with the first gear (2), the other end of the carrier gear transmission mechanism is in transmission connection with the second gear (4), the second gear (4) is sleeved outside the output shaft (5), the carrier gear transmission mechanism (3) comprises a third gear (31), a fourth gear (32) and a connecting shaft (33), the third gear (31) and the fourth gear (32) are sleeved at two ends of the connecting shaft (33), the third gear (31) is meshed with the first gear (2), and the fourth gear (32) is meshed with the second gear (4).
The first gear (2) is an internal gear, and the third gear (31) is a straight gear;
the first shell (7) is connected with the machine head (6), the second shell (8) is connected with the first shell (7), and the input shaft (1), the output shaft (5) and the carrier gear transmission mechanism (3) are all positioned in a space formed by the machine head (6), the first shell (7) and the second shell (8);
a supporting block (71) is arranged in the first shell (7), and the supporting block (71) is arranged on the periphery of the connecting shaft (33);
A first bearing (72) is arranged in the first shell (7), the first bearing (72) is sleeved outside the connecting shaft (33), and the first bearing (72) is matched with the supporting block (71);
the fixed sleeve (9) is arranged between the output shaft (5) and the second shell (8), the fixed sleeve (9) is matched with the output shaft (5), and one end of the fixed sleeve (9) is connected with the first shell (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810133839.0A CN108105339B (en) | 2018-02-09 | 2018-02-09 | Dental handpiece speed-increasing straight machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810133839.0A CN108105339B (en) | 2018-02-09 | 2018-02-09 | Dental handpiece speed-increasing straight machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108105339A CN108105339A (en) | 2018-06-01 |
| CN108105339B true CN108105339B (en) | 2024-05-10 |
Family
ID=62220332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810133839.0A Active CN108105339B (en) | 2018-02-09 | 2018-02-09 | Dental handpiece speed-increasing straight machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108105339B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111419434A (en) * | 2020-04-13 | 2020-07-17 | 桂林市啄木鸟医疗器械有限公司 | Dental curette and root canal therapy appearance |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19542779A1 (en) * | 1995-11-16 | 1997-05-22 | Horst Scholz Gmbh & Co Kg | Compact and potentially very small, mass-produced, plastic epicyclic gear unit |
| WO2014044277A1 (en) * | 2012-09-24 | 2014-03-27 | Schaeffler Technologies AG & Co. KG | Gear assembly |
| CN205101473U (en) * | 2015-10-29 | 2016-03-23 | 重庆永进重型机械成套设备有限责任公司 | Planetary high -speed gear change case |
| CN106051122A (en) * | 2016-08-11 | 2016-10-26 | 东莞友联自动化设备科技有限公司 | Reference-circle differential reduction gear |
| CN106641114A (en) * | 2017-01-12 | 2017-05-10 | 苏州吾纳德传动技术有限公司 | Speed reducer for solar thermal electric power generation |
| CN208442215U (en) * | 2018-02-09 | 2019-01-29 | 佛山市驰康医疗器材有限公司 | The straight machine of dental handpiece speedup |
-
2018
- 2018-02-09 CN CN201810133839.0A patent/CN108105339B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19542779A1 (en) * | 1995-11-16 | 1997-05-22 | Horst Scholz Gmbh & Co Kg | Compact and potentially very small, mass-produced, plastic epicyclic gear unit |
| WO2014044277A1 (en) * | 2012-09-24 | 2014-03-27 | Schaeffler Technologies AG & Co. KG | Gear assembly |
| CN205101473U (en) * | 2015-10-29 | 2016-03-23 | 重庆永进重型机械成套设备有限责任公司 | Planetary high -speed gear change case |
| CN106051122A (en) * | 2016-08-11 | 2016-10-26 | 东莞友联自动化设备科技有限公司 | Reference-circle differential reduction gear |
| CN106641114A (en) * | 2017-01-12 | 2017-05-10 | 苏州吾纳德传动技术有限公司 | Speed reducer for solar thermal electric power generation |
| CN208442215U (en) * | 2018-02-09 | 2019-01-29 | 佛山市驰康医疗器材有限公司 | The straight machine of dental handpiece speedup |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108105339A (en) | 2018-06-01 |
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