CN210697850U - High-speed dental handpiece - Google Patents
High-speed dental handpiece Download PDFInfo
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- CN210697850U CN210697850U CN201921258839.XU CN201921258839U CN210697850U CN 210697850 U CN210697850 U CN 210697850U CN 201921258839 U CN201921258839 U CN 201921258839U CN 210697850 U CN210697850 U CN 210697850U
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Abstract
The utility model discloses a high-speed dental handpiece, which comprises a handpiece and a handle, wherein the handpiece comprises a casing, an adjusting part, a bearing seat and a core assembly, the adjusting part is matched and connected with the bearing seat, the outer wall of the adjusting part is in threaded connection with the casing, the core assembly is arranged on the bearing seat, the core assembly comprises a bearing shaft, a limiting device and a clamping device, the clamping device is arranged above the limiting device, a square through hole is arranged on the bearing shaft, the square through hole comprises a first through hole and a second through hole, the axial width of the first through hole is less than that of the second through hole, the upper surface of the second through hole is higher than that of the first through hole, the clamping device sequentially comprises a spring from bottom, roof, clamp plate and unlocking shaft, in first through-hole was located to clamp plate one end, in the second through-hole was located to the other end, the upper surface and the lower surface of clamp plate paralleled, and clamp plate, roof, unlocking shaft and stop device all are equipped with the shaft hole that supplies the needle to pass that communicates each other. The utility model discloses long service life, easily processing, low in production cost.
Description
Technical Field
The utility model relates to the field of medical equipment, in particular to high-speed dental handpiece.
Background
At present, a bearing at the top of a handpiece of a high-speed dental handpiece is installed in a shell through a bearing seat, the bearing seat is generally in interference fit with a rear cover, and the rear cover is fixedly connected with the shell through threads.
When the dental handpiece works, the bearing rotates at a high speed, and the ball of the bearing is easy to wear. The bearings wear and seriously affect the service life of the dental handpiece, so that the bearings need to be replaced frequently.
In addition, in the conventional high-speed dental handpiece needle clamping device, the clamping plate for clamping the needle is formed by processing the surfaces of the spring and the unlocking shaft into inclined surfaces. And for small parts such as the clamping plate, two surfaces are machined into inclined surfaces, the machining difficulty is high, the machining precision requirement is high, and therefore the production cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a high-speed dental handpiece with long service life, easy processing and low production cost, which can at least solve one of the problems.
According to one aspect of the utility model, a high-speed dental handpiece is provided, which comprises a handpiece and a handle which are connected, wherein the handpiece comprises a casing, an adjusting part, a bearing seat and a movement assembly, the adjusting part is connected with the bearing seat in a matching way, the outer wall of the adjusting part is connected with the casing in a threaded way, the movement assembly is arranged on the bearing seat, the movement assembly comprises a bearing shaft, a limiting device arranged at one end in the bearing shaft and a clamping device arranged in the bearing shaft and used for clamping a needle, the clamping device is arranged above the limiting device, a square through hole is arranged on the bearing shaft and comprises a first through hole and a second through hole, the axial width of the first through hole is smaller than that of the second through hole, the upper surface of the second through hole is higher than that of the first through hole, the clamping device sequentially comprises a spring, a top plate, a clamping plate and an unlocking shaft from bottom to top, one end of, the upper surface and the lower surface of the clamping plate are parallel, and the clamping plate, the top plate, the unlocking shaft and the limiting device are all provided with shaft holes which are communicated with each other and used for the needles to penetrate through.
Therefore, the tightness degree of the bearing installed on the bearing seat can be adjusted by controlling the length of the adjusting piece screwed into the shell, namely the free gap and the preload of the bearing are adjusted. When the bearing balls are worn and the diameter is reduced, the length of the adjusting part screwed into the shell is increased, the distance between the outer ring and the inner ring of the bearing is reduced, the bearing play is eliminated, the bearing has effective and proper preload, the problem that the wear noise of the balls is increased is solved, and the service life of the dental handpiece is effectively prolonged.
Meanwhile, the swing space of the clamping plate in the second through hole is larger than that in the first through hole, the inclination degree of the clamping plate is controlled through the action of the top plate on the clamping plate, the clamping state of the clamping device on the lathe needle is further controlled, the state of the clamping plate is conveniently adjusted, the clamping plate is not required to be machined into an inclined plane, the machining difficulty is reduced, and therefore the machining cost is reduced.
The utility model discloses a core assembly's the needle mode of pressing from both sides is all different with the needle mode of pressing from both sides of other current dental handpiece, the utility model discloses a press from both sides the needle mode and can reduce the possibility of flying the needle, give up the risk of droing of welding head, and fatigue resistance is very reliable moreover, long service life.
In some embodiments, the top plate is a trapezoidal plate, the upper surface of the top plate is a slope, the lower surface of the top plate is a horizontal plane, and the thickness of the top plate on the side close to the second through hole is greater than the thickness of the top plate on the side close to the first through hole. Therefore, the upper surface of the top plate is an inclined surface, and when the top plate ascends, acting force generated by the inclined surface can drive the clamping plate to swing, so that the clamping plate inclines to clamp the sewing needle.
In some embodiments, the lower surfaces of the first and second through holes are disposed on the same radial plane of the bearing shaft.
In some embodiments, the top plate is fixedly connected with the unlocking shaft.
In some embodiments, one end of the adjusting member is connected to the housing, and the other end is provided with a rear cover. Therefore, the arrangement of the rear cover has the function of dust prevention and protection.
In some embodiments, the outer wall of the adjusting member is provided with external threads, and the inner wall of the housing is provided with internal threads that mate with the external threads. Therefore, the tightness degree of the bearing installed on the bearing seat can be adjusted by controlling the length of the adjusting piece screwed into the shell.
In some embodiments, the first fastener is disposed on the adjusting member, the second fastener is disposed on the rear cover, and the first fastener and the second fastener are engaged. Thus, the installation of the rear cover is facilitated.
In some embodiments, the bearing seat is provided with a bearing at the inner side, and the bearing sleeve is arranged at the outer periphery of the bearing shaft. Therefore, when the dental handpiece works, the whole movement assembly rotates at a high speed, and the bearing sleeve is arranged outside the bearing shaft, so that the smooth rotation can be ensured.
In some embodiments, a damping ring is arranged between the bearing seat and the bearing, the bearing seat is provided with a mounting groove, and the damping ring is sleeved on the periphery of the bearing and mounted in the mounting groove. The damping ring provides axial and radial buffering for the bearing, the bearing is uniformly stressed, the stress area is large, the vibration of the bearing is reduced, the running noise of the dental handpiece can be reduced, and the service life of the bearing is prolonged; the damping ring is installed in the mounting groove of bearing frame, can effectually prevent that the damping ring from shifting.
In some embodiments, the high speed dental handpiece further comprises a connector, the handpiece being connected to one end of the handle, the connector being connected to the other end of the handle. Therefore, the connector can be used for connecting devices such as a cleaning oiling machine and the like to complete cleaning, maintenance and other work.
The utility model has the advantages that:
the tightness degree of the bearing installed on the bearing seat can be adjusted by controlling the length of the adjusting piece screwed into the shell, namely the free gap and the preload of the bearing are adjusted. When the bearing balls are worn and the diameter is reduced, the length of the adjusting part screwed into the shell is increased, so that the distance between the outer ring and the inner ring of the bearing is reduced, the bearing play is eliminated, the bearing has effective and proper preload, the problem of increase of the wear noise of the balls is solved, and the service life of the dental handpiece is effectively prolonged; meanwhile, the swing space of the clamping plate in the second through hole is larger than that in the first through hole, the inclination degree of the clamping plate is controlled through the action of the top plate on the clamping plate, the clamping state of the clamping device on the lathe needle is further controlled, the state of the clamping plate is conveniently adjusted, the clamping plate is not required to be machined into an inclined plane, the machining difficulty is reduced, and therefore the machining cost is reduced.
Drawings
Fig. 1 is a schematic perspective view of a high-speed dental handpiece according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the high-speed dental handpiece of FIG. 1;
FIG. 3 is an enlarged schematic view of the high speed dental handpiece of FIG. 2 at A;
FIG. 4 is a schematic view of the adjustment member, bearing seat and back cover of the high speed dental handpiece of FIG. 2;
fig. 5 is a schematic structural view of a movement assembly of the high-speed dental handpiece shown in fig. 1.
Reference numerals in FIGS. 1 to 5: 1-machine head; 2-a handle; 3-a connector; 4-needle turning; 11-a housing; 12-an adjustment member; 13-a bearing seat; 14-a bearing; 15-a cartridge assembly; 16-rear cover; 17-a damping ring; 121-external threads; 122-a first fastener; 131-a mounting groove; 151-bearing shaft; 152-a limiting device; 153-a clamping device; 161-a second fastener; 1511-square through hole; 1531-a spring; 1532-the top plate; 1533-a clamping plate; 1534-unlocking the shaft; 1511 a-first via; 1511 b-second via.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1-5 schematically show a high speed dental handpiece according to an embodiment of the present invention.
As shown in figures 1-5, the high speed dental handpiece comprises a handpiece 1 and a handle 2 which are connected.
Handpiece 1 comprises a casing 11, an adjustment member 12, a bearing housing 13 and a movement assembly 15. Adjusting part 12 is connected with the cooperation of bearing frame 13, and the outer wall and the casing 11 threaded connection of adjusting part 12, core assembly 15 install in bearing frame 13.
The adjusting member 12 and the bearing seat 13 are of an integral structure, specifically, an integrally formed structure. One end of the adjusting member 12 is connected to the housing 11, and the other end is connected to the rear cover 16. The rear cover 16 is provided with a dust-proof protection function.
The bearing 14 is arranged on the inner side of the bearing seat 13, and the bearing 14 is sleeved on the periphery of the movement assembly 15. Therefore, when the dental handpiece works, the whole movement assembly 15 rotates at a high speed, and the bearing 14 is sleeved outside the movement assembly 15, so that the smooth rotation can be ensured.
A damping ring 17 is arranged between the bearing seat 13 and the bearing 14, an installation groove 131 is formed in the bearing seat 13, and the damping ring 17 is sleeved on the periphery of the bearing 14 and is installed in the installation groove 131. The damping ring 17 provides axial and radial buffering for the bearing 14, the bearing 14 is uniformly stressed, the stress area is large, the vibration of the bearing 14 is reduced, the running noise of the dental handpiece can be reduced, and the service life of the bearing 14 is prolonged; the damping ring 17 is installed in the installation groove 131 of the bearing seat 13, and the damping ring 17 can be effectively prevented from being displaced.
The outer wall of the adjusting member 12 is provided with an external thread 121, and the inner wall of the housing 11 is provided with an internal thread matching with the external thread 121. Therefore, the tightness degree of the bearing 14 mounted on the bearing seat 13 can be adjusted by controlling the length of the adjusting piece 12 screwed into the machine shell 11.
The adjusting member 12 is provided with a first fastening member 122, and the first fastening member 122 may be a lug, and is integrally formed with the adjusting member 12. The rear cover 16 is provided with a second fastener 161, and the second fastener 161 may be a lug and is integrally formed with the rear cover 16. The first fastener 122 cooperates with the second fastener 161. Therefore, when the rear cover 16 is installed, the second fastener 161 of the rear cover 16 is directly fastened to the first fastener 122, so that the installation is convenient.
When the dental handpiece is used for a period of time, the roller of the bearing 14 is worn, so that the noise of the dental handpiece is increased, the tightness of the installation of the bearing 14, namely the free gap and the preload of the installation of the bearing 14, can be adjusted by adjusting the length of the adjusting piece 12 screwed into the shell 11, and the effects of reducing the noise and prolonging the service life of the dental handpiece are achieved.
As shown in fig. 2, 3, and 5, the movement assembly 15 of the present embodiment includes a bearing shaft 151, a stopper 152 provided at one end inside the bearing shaft 151, and a holding device 153 provided inside the bearing shaft 151 for holding the needle 4. The clamping device 153 is disposed above the limiting device 152. The limiting device 152 may be a nozzle, and the limiting device 152 is fixedly disposed in the bearing shaft 151. Be equipped with square through-hole 1511 on bearing axle 151, square through-hole 1511 includes first through-hole 1511a and second through-hole 1511b, and the axial width of first through-hole 1511a is less than the width of second through-hole 1511b, and the upper surface of second through-hole 1511b is higher than the upper surface of first through-hole 1511 a.
The bearing 14 is sleeved on the outer periphery of the bearing shaft 151. Therefore, when the dental handpiece works, the whole movement assembly 15 rotates at a high speed, and the bearing 14 is sleeved outside the bearing shaft 151, so that the smooth rotation can be ensured.
The clamping device 153 sequentially includes, from bottom to top, a spring 1531, a top plate 1532, a clamping plate 1533, and an unlocking shaft 1534, and the top plate 1532 and the unlocking shaft 1534 may be fixedly connected by welding or the like. One end of the clamping plate 1533 is disposed in the first through hole 1511a, the other end is disposed in the second through hole 1511b, the upper surface and the lower surface of the clamping plate 1533 are parallel, and the clamping plate 1533, the top plate 1532, the unlocking shaft 1534 and the limiting device 152 are all provided with shaft holes for the needles 4 to pass through, which are communicated with each other.
The top plate 1532 is a trapezoidal plate, the upper surface of the top plate 1532 is a slope, the lower surface is a horizontal plane, and the thickness of the top plate 1532 near the second through hole 1511b is greater than that near the first through hole 1511 a. Therefore, the upper surface of the top plate 1532 is an inclined surface, and when the top plate 1532 is lifted, the force generated by the inclined surface can drive the clamping plate 1533 to swing, so that the clamping plate 1533 is inclined to clamp the needles 4.
The lower surfaces of the first through hole 1511a and the second through hole 1511b are provided on the same radial plane of the bearing shaft 151.
As shown in fig. 5, when the movement assembly 15 of this embodiment is used, the rear cover 16 is pressed, so that the unlocking shaft 1534 moves downward relative to the bearing shaft 151, the unlocking shaft 1534 pushes the clamping plate 1533, the lower surface of the clamping plate 1533 contacts with the lower surface of the through hole, the spring 1531 is compressed, and the inclined vertex of the top plate 1532 is away from the clamping plate 1533, so that the clamping plate 1533 is in a horizontal state under the action of the unlocking shaft 1534, and at this time, the needle 4 may be inserted into the movement assembly 15 through the limiting device 152, the spring 1531, the top plate 1532, the clamping plate 1533, and the unlocking shaft 1534 in sequence from bottom to top, or the needle 4 may be removed from the movement assembly 15.
When the needle 4 is inserted into the movement assembly 15, the force applied to the unlocking shaft 1534 is removed, and the top plate 1532 moves upward due to the resilient force of the spring 1531, and pushes the clamp plate 1533 by the inclined surface, so that the clamp plate 1533 is inclined. When the lower surface of the clamping plate 1533 is in contact with the lower surface of the first through hole 1511a, the clamping plate 1533 is maintained in an inclined state by the cooperation of the spring 1531 and the bearing shaft 151, thereby bringing the needle 4 into a clamped state.
As shown in fig. 1 and 2, the high-speed dental handpiece of the present embodiment further includes a connector 3. The aircraft nose 1 is connected with the one end of handle 2, and connector 3 is connected with the other end of handle 2. Therefore, the connector 3 is connected with devices such as a cleaning oiling machine and the like through a connecting pipe, and the cleaning, maintenance and other work of the mobile phone is completed.
The utility model discloses a high-speed dental handpiece is through the length of the 12 precession casings 11 of control regulating part, can adjust the elasticity degree of bearing 14 at the installation of bearing frame 13, adjusts bearing 14's free clearance and preload promptly. When the ball of the bearing 14 is worn and the diameter is reduced, the length of the adjusting part 12 screwed into the shell 11 is increased, so that the distance between the outer ring and the inner ring of the bearing 14 is reduced, the clearance of the bearing 14 is eliminated, the bearing has effective and proper preload, the problem of increased wear noise of the ball is solved, and the service life of the dental handpiece is effectively prolonged;
meanwhile, the swing space of the clamping plate 1533 in the second through hole 1511b is larger than the swing space in the first through hole 1511a, the inclination degree of the clamping plate 1533 is controlled by the action of the top plate 1532 on the clamping plate 1533, and the clamping state of the clamping device 153 on the needle 4 is further controlled, so that the state of the clamping plate 1533 can be conveniently adjusted, the clamping plate 1533 does not need to be machined into an inclined surface, the machining difficulty is reduced, and the machining cost is reduced.
What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.
Claims (10)
1. The high-speed dental handpiece comprises a handpiece (1) and a handle (2) which are connected, and is characterized in that the handpiece (1) comprises a casing (11), an adjusting part (12), a bearing seat (13) and a movement assembly (15), the adjusting part (12) is matched and connected with the bearing seat (13), the outer wall of the adjusting part (12) is in threaded connection with the casing (11), the movement assembly (15) is installed on the bearing seat (13), the movement assembly (15) comprises a bearing shaft (151), a limiting device (152) arranged at one end in the bearing shaft (151) and a clamping device (153) arranged in the bearing shaft (151) and used for clamping a needle (4), the clamping device (153) is arranged above the limiting device (152), a square through hole (1511) is formed in the bearing shaft (151), the square through hole (1511) comprises a first through hole (1511a) and a second through hole (1511b), the axial width of the first through hole (1511a) is smaller than that of the second through hole (1511b), the upper surface of the second through hole (1511b) is higher than that of the first through hole (1511a), the clamping device (153) sequentially comprises a spring (1531), a top plate (1532), a clamping plate (1533) and an unlocking shaft (1534) from bottom to top, one end of the clamping plate (1533) is arranged in the first through hole (1511a), the other end of the clamping plate is arranged in the second through hole (1511b), the upper surface and the lower surface of the clamping plate (1533) are parallel, and the clamping plate (1533), the top plate (1532), the unlocking shaft (1534) and the limiting device (152) are respectively provided with shaft holes which are communicated with each other and through which the vehicle needle (4) can pass.
2. The high-speed dental handpiece of claim 1, wherein the top plate (1532) is a trapezoidal plate, the top surface of the top plate (1532) is a slant surface, the bottom surface is a horizontal surface, and the thickness of the top plate (1532) on the side close to the second through hole (1511b) is greater than the thickness of the top plate on the side close to the first through hole (1511 a).
3. A high speed dental handpiece according to claim 2, wherein the lower surfaces of the first (1511a) and second (1511b) through holes are provided on the same radial plane of the bearing (14) axis.
4. The high speed dental handpiece of claim 1, wherein the top plate (1532) is fixedly attached to the unlocking shaft (1534).
5. A high speed dental handpiece according to claim 1, wherein the adjusting member (12) is connected to the housing (11) at one end and is provided with a rear cover (16) at the other end.
6. A high-speed dental handpiece according to claim 5, wherein the outer wall of the adjusting member (12) is provided with an external thread (121) and the inner wall of the housing (11) is provided with an internal thread which cooperates with the external thread (121).
7. The high-speed dental handpiece of claim 6, wherein said adjusting member (12) is provided with a first fastener (122), said rear cover (16) is provided with a second fastener (161), and said first fastener (122) is adapted to mate with said second fastener (161).
8. A high-speed dental handpiece according to any of claims 1 to 7, wherein a bearing (14) is provided on the inner side of the bearing seat (13), and the bearing (14) is sleeved on the outer periphery of the bearing shaft (151).
9. The high-speed dental handpiece according to claim 8, wherein a damping ring (17) is arranged between the bearing seat (13) and the bearing (14), the bearing seat (13) is provided with an installation groove (131), and the damping ring (17) is sleeved on the periphery of the bearing (14) and is installed in the installation groove (131).
10. A high speed dental handpiece according to any of claims 1 to 7, further comprising a connector (3), wherein the handpiece (1) is connected to one end of the handle (2), and the connector (3) is connected to the other end of the handle (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921258839.XU CN210697850U (en) | 2019-08-05 | 2019-08-05 | High-speed dental handpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921258839.XU CN210697850U (en) | 2019-08-05 | 2019-08-05 | High-speed dental handpiece |
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| Publication Number | Publication Date |
|---|---|
| CN210697850U true CN210697850U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921258839.XU Active CN210697850U (en) | 2019-08-05 | 2019-08-05 | High-speed dental handpiece |
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| CN (1) | CN210697850U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112869893A (en) * | 2021-02-01 | 2021-06-01 | 桂林市啄木鸟医疗器械有限公司 | Handle structure and dental surgical instrument |
| CN113952049A (en) * | 2021-11-11 | 2022-01-21 | 桂林市啄木鸟医疗器械有限公司 | Dental handpiece and dental therapeutic apparatus |
-
2019
- 2019-08-05 CN CN201921258839.XU patent/CN210697850U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112869893A (en) * | 2021-02-01 | 2021-06-01 | 桂林市啄木鸟医疗器械有限公司 | Handle structure and dental surgical instrument |
| CN113952049A (en) * | 2021-11-11 | 2022-01-21 | 桂林市啄木鸟医疗器械有限公司 | Dental handpiece and dental therapeutic apparatus |
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