Dental handpiece

Abstract

The utility model relates to a dental handpiece, and relates to the field of dental instruments, the dental handpiece comprises an integrated handpiece head, a front handle part connected with the integrated handpiece head, a rear handle part connected with one end of the front handle part, a joint arranged at one end, far away from the front handle part, of the rear handle part, and a power generation device arranged in the rear handle part, the integrated handpiece head is provided with an air outlet pipe located in the front handle part; a receding ring groove is formed in the inner side of the end, close to the rear handle part, of the front handle part, a limiting piece arranged on the outer side of the air outlet pipe in a sleeving mode is arranged in the receding ring groove, a pressing piece for pressing the limiting piece into the receding ring groove is arranged on the outer side of the air outlet pipe, and the pressing piece is matched with an air outlet hole of the power generation device in an inserted mode. And an air inlet pipe of the power generation device is inserted and matched with the joint. The limiting piece is placed in the receding ring groove, the limiting piece is arranged on the outer side of the air outlet pipe in a sleeving mode, the air outlet pipe can be limited, and the limiting piece can be pressed in the receding ring groove through the pressing piece, so that the stability of the air outlet pipe is improved, and the air outlet pipe is not prone to shaking.

Description

Technical Field

[0001] The present invention relates to the field of dental instruments, and in particular to dental handpieces. Background Art

[0002] Dental handpieces have become an indispensable tool in oral clinical work. They are used in conjunction with comprehensive treatment machines, and they can clamp the burs to complete tasks such as drilling, grinding, cutting, and trimming of teeth and restorations.

[0003] A Chinese patent application with publication number CN111195158A discloses a self-luminous dental handpiece, including a handpiece, a handle, a joint, an LED lamp, and a power generation device, a driving air pipe and a cooling water pipe installed in the handle. The handpiece is inserted into the front end of the handle, and the handpiece is provided with a light guide groove, which extends from one end of the handpiece close to the handle to the lower end side wall of the handpiece. A mounting seat is provided at the front end of the handle, and a pair of electrode pins with mounting holes are arranged at the end of the mounting seat away from the handpiece.

[0004] With regard to the above-mentioned related technologies, since the air inlet pipe and the joint of the power generation device are plug-in matched, and one end of the air outlet pipe is inserted into the air outlet hole of the power generation device, and the other end of the air outlet pipe is inserted into the machine head, the position stability of the power generation device and the air outlet pipe close to each other is not high and is prone to shaking. Utility Model Content

[0005] In order to improve the stability of the air outlet tube, the present application provides a dental handpiece.

[0006] This application provides a dental mobile phone, which adopts the following technical solution:

[0007] A dental handpiece comprises an integrated handpiece head, a front handle connected to the integrated handpiece head, a rear handle connected to one end of the front handle, a joint arranged at an end of the rear handle away from the front handle, and a power generating device arranged in the rear handle, wherein the integrated handpiece head is provided with an air outlet pipe located in the front handle, a clearance ring groove is provided on the inner side of the end of the front handle close to the rear handle, a limiting piece sleeved on the outer side of the air outlet pipe is provided in the clearance ring groove, a pressing piece for pressing the limiting piece into the clearance ring groove is provided on the outer side of the air outlet pipe, the pressing piece is plug-fitted with the air outlet hole of the power generating device, and the air inlet pipe of the power generating device is plug-fitted with the joint.

[0008] By adopting the above technical solution, the limiting part is placed in the give way ring groove, and the limiting part is sleeved on the outside of the outlet pipe, so that the outlet pipe can be restricted. The setting of the clamping part can press the limiting part in the give way ring groove to improve the stability of the outlet pipe and make it less likely to shake.

[0009] Optionally, an external thread is provided on the outside of the air outlet pipe and near the power generation device, the clamping piece is provided with a connecting hole respectively connected to the air outlet pipe and the air outlet hole of the power generation device, and an internal thread matching the external thread is provided in the connecting hole.

[0010] By adopting the above technical solution, the setting of the pressing member can press the limiting member tightly into the yielding ring groove.

[0011] Optionally, a connecting block located between the limiting member and the pressing member is provided on the outside of the air outlet pipe, and the connecting block is provided with a threaded hole matching with the external thread.

[0012] By adopting the above technical solution, since the double thread structure of the connecting block and the pressing piece is provided, the connecting block and the pressing piece are not easy to loosen.

[0013] Optionally, a positioning slot connected to the yielding ring groove is opened on the inner side of the front handle, and the limiting member is provided with a positioning plug block that is plugged into and cooperates with the positioning slot.

[0014] By adopting the above technical solution, the rotation of the limiting member in the yielding ring groove can be reduced, thereby improving the stability of the limiting member.

[0015] Optionally, an annular groove is provided on the outer side of the pressing member, and a sealing ring is provided in the annular groove to cooperate with the inner wall of the air outlet of the power generation device.

[0016] By adopting the above technical solution, the sealing ring can be pressed tightly against the inner wall of the air outlet to improve the sealing performance between the pressing member and the power generation device.

[0017] Optionally, the limiting member is provided with a plurality of vents.

[0018] By adopting the above technical solution, it is convenient for gas to be blown from the front handle to the rear handle.

[0019] Optionally, the clamping piece is cylindrical, and a screwing surface for easy screwing is provided on the outer side of the clamping piece.

[0020] By adopting the above technical solution, when installing or removing the clamping piece, a person can twist the clamping piece by tools or by hand.

[0021] Optionally, an annular guide portion is provided on the outer side of the pressing member near the power generation device.

[0022] By adopting the above technical solution, it is convenient to align the pressing piece and the air outlet hole of the power generation device.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Put the limiting piece into the clearance ring groove and set the limiting piece on the outside of the outlet pipe to limit the outlet pipe. The setting of the pressing piece can press the limiting piece into the clearance ring groove to improve the stability of the outlet pipe and make it less likely to shake.

[0025] 2. Due to the double thread structure of the connecting block and the pressing piece, the connecting block and the pressing piece are not easy to loosen. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of a dental handpiece;

[0027] Figure 2 It is a cross-sectional view of a dental handpiece;

[0028] Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A;

[0029] Figure 4 yes Figure 2 A partial enlarged schematic diagram of part B;

[0030] Figure 5 It is a schematic diagram of the limiting part, connecting block and clamping part of the dental handpiece.

[0031] Explanation of the reference numerals in the accompanying drawings: 1. integrated machine head; 2. front handle; 3. rear handle; 4. joint; 5. power generation device; 6. air inlet pipe; 7. air outlet pipe; 8. pressing piece; 9. lamp holder; 10. LED lamp; 11. light guide groove; 12. optical fiber block; 13. return air outlet; 14. clearance ring groove; 15. limiting piece; 16. external thread; 17. connecting block; 18. threaded hole; 19. connecting hole; 20. internal thread; 21. positioning slot; 22. positioning plug block; 23. vent; 24. annular groove; 25. sealing ring; 26. annular guide; 27. screwing surface. DETAILED DESCRIPTION

[0032] The following is combined with Figures 1 to 5 This application is described in further detail.

[0033] The present application embodiment discloses a dental handpiece. Figure 1 and Figure 2 The dental handpiece includes an integrated handpiece 1, a front handle 2, a rear handle 3, a joint 4 and a power generation device 5. The integrated handpiece 1 is inserted into the front end of the handle, and the rear handle 3 is installed at the end of the front handle 2 away from the integrated handpiece 1. The front handle 2 and the rear handle 3 are both hollow cylindrical objects. The front handle 2 and the rear handle 3 are threadedly connected, that is, a threaded section is provided on the outer side of the front handle 2 and close to the rear handle 3, and a threaded section is also provided on the inner side of the rear handle 3 and close to the front handle 2.

[0034] The connector 4 is plugged into one end of the rear handle 3 away from the front handle 2, the generator 5 is located in the rear handle 3, the inlet hole of the generator 5 is equipped with an inlet pipe 6, and the inlet pipe 6 of the generator 5 is plugged and matched with the connector 4. The integrated head 1 is connected with an outlet pipe 7, the outlet pipe 7 is located in the front handle 2, and a pressing piece 8 is installed between the outlet pipe 7 and the outlet hole of the generator 5, and the pressing piece 8 is used to achieve the connection between the outlet pipe 7 and the outlet hole of the generator 5.

[0035] Reference Figure 2 and Figure 3 A lamp holder 9 is installed at the front end of the front handle 2, and an LED lamp 10 is installed on the lamp holder 9. A light guide groove 11 is opened at the front end of the front handle 2 corresponding to the position of the LED lamp 10. The light emitted by the LED lamp 10 is transmitted from the front end of the front handle 2 through the light guide groove 11 to provide lighting for treatment.

[0036] The connector 4 is used to connect the dental handpiece to the comprehensive treatment machine. When working, air is taken in through the air inlet pipe 6 to drive the impeller in the generator 5 to rotate, and the generator 5 is used to convert wind energy into electrical energy to power the LED lamp 10. It should be noted that the LED lamp 10 is connected to a first wire, and the output end of the generator 5 is connected to a second wire, and electrode pins are installed on the first wire and the second wire.

[0037] An optical fiber block 12 is installed in the light guide groove 11 by a shadowless adhesive, and one end of the optical fiber block 12 is arranged opposite to the light-emitting surface of the LED lamp 10. The setting of the optical fiber block 12 can guide light, reduce the stimulation of the illumination light to the eyes, reduce visual fatigue, and provide safety protection for dental surgery.

[0038] Since the air outlet pipe 7 is connected to the air outlet hole of the power generation device 5 through the pressing piece 8, the gas can be blown into the air outlet pipe 7 through the air outlet hole of the power generation device 5, and transported to the integrated head 1 along the air outlet pipe 7, thereby providing wind power for the integrated head 1. In addition, a return air port 13 is provided at one end of the integrated head 1 close to the front handle 2. After the wind power enters the integrated head 1, it can be discharged from the return air port 13 to the front handle 2, and then to the rear handle 3, and finally discharged to the comprehensive treatment machine along the return air pipe on the joint 4.

[0039] Reference Figure 4 and Figure 5Preferably, a clearance ring groove 14 is provided on the inner side of the end of the front handle 2 near the rear handle 3, and the clearance ring groove 14 is annularly arranged, and a limiting member 15 is inserted and matched in the clearance ring groove 14. The limiting member 15 is plate-shaped and can be slidably sleeved on the outside of the air outlet pipe 7, and an external thread 16 is provided on the outside of the air outlet pipe 7 and close to the power generation device 5. A connecting block 17 is sleeved on the outside of the air outlet pipe 7, and the connecting block 17 is provided with a threaded hole 18 that matches the external thread 16, so that a threaded connection between the connecting block 17 and the air outlet pipe 7 can be realized. The clamping member 8 is sleeved on the outside of the air outlet pipe 7, and the clamping member 8 is provided with a connecting hole 19, and an internal thread 20 that matches the external thread 16 is provided in the connecting hole 19, so that a threaded connection between the air outlet pipe 7 and the clamping member 8 can be realized, and the connecting block 17 is located between the limiting member 15 and the clamping member 8, and the clamping member 8 can be inserted and matched with the air outlet hole of the power generation device 5.

[0040] Before installing the rear handle 3 and the front handle 2, first put the limiting piece 15 into the give way ring groove 14, and make the limiting piece 15 sleeved on the outside of the outlet pipe 7, then thread the connecting block 17 to the outside of the outlet pipe 7, and make the connecting block 17 and the limiting piece 15 press tightly, then thread the clamping piece 8 to the outside of the outlet pipe 7, and make the clamping piece 8 and the connecting block 17 press tightly, so as to press the limiting piece 15 into the give way ring groove 14, then plug the clamping piece 8 and the outlet hole of the generator 5, so that the connecting hole 19 can be connected with the outlet pipe 7 and the outlet hole of the generator 5 respectively, then complete the connection between the rear handle 3 and the front handle 2, then insert the connector 4 into the rear handle 3, and plug the air inlet pipe 6 of the generator 5 into the connector 4.

[0041] It should be noted that placing the limiting member 15 into the yield ring groove 14 can limit the air outlet pipe 7 to improve its stability and prevent it from shaking easily. The setting of the connecting block 17 and the clamping member 8 can press the limiting member 15 into the yield ring groove 14, and due to the double thread structure of the connecting block 17 and the clamping member 8, the connecting block 17 and the clamping member 8 are not easy to loosen.

[0042] Furthermore, a positioning slot 21 is provided on the inner side of the front handle 2, and the positioning slot 21 is provided along the length direction of the front handle 2, and the positioning slot 21 is connected to the yield ring groove 14, and a positioning block 22 is integrally connected to the outer side of the limiting member 15, and the positioning block 22 is plugged into and matched with the positioning slot 21.

[0043] When installing the limiting member 15, it is necessary to first align the positioning block 22 with the positioning slot 21. When the limiting member 15 is placed in the clearance ring groove 14, the positioning block 22 can be plugged into the positioning slot 21. In this way, the rotation of the limiting member 15 in the clearance ring groove 14 can be reduced, thereby improving the stability of the limiting member 15.

[0044] Preferably, the limiting member 15 is provided with a plurality of vents 23, which penetrate the two end surfaces and the outer peripheral surface of the limiting member 15. In this embodiment, there are four vents 23. The vents 23 are arranged to facilitate the gas to blow from the front handle 2 to the rear handle 3, and the vents 23 can also allow the second wire of the power generation device 5 to pass through.

[0045] Furthermore, two annular grooves 24 are provided at the middle of the outer side of the pressing member 8 , and sealing rings 25 are installed in the annular grooves 24 , and the sealing rings 25 cooperate with the inner wall of the air outlet of the power generation device 5 .

[0046] After the pressing piece 8 is plugged into the air outlet of the power generation device 5 , the sealing ring 25 can be pressed against the inner wall of the air outlet to improve the sealing performance between the pressing piece 8 and the power generation device 5 .

[0047] In addition, the pressing member 8 is cylindrical, and an annular guide portion 26 is provided on the outside of the pressing member 8 and near the power generation device 5. The annular guide portion 26 is a tapered inclined surface facing outward. The provision of the annular guide portion 26 reduces the size of the pressing member 8 near the power generation device 5, and when the pressing member 8 is plugged into the air outlet of the power generation device 5, the air outlet of the power generation device 5 can be guided, so that the pressing member 8 and the air outlet of the power generation device 5 are easily aligned.

[0048] Preferably, a screwing surface 27 is provided on the outside of the pressing member 8, and two screwing surfaces 27 are provided, and the screwing surfaces 27 are planes, and the two screwing surfaces 27 are parallel to each other. When installing or removing the pressing member 8, personnel can screw the pressing member 8 by tools or hands, and the setting of the screwing surface 27 facilitates the corresponding operation of the pressing member 8.

[0049] The implementation principle of the dental mobile phone in the embodiment of the present application is as follows: before installing the rear handle 3 and the front handle 2, first put the limiting piece 15 into the give way ring groove 14, and make the limiting piece 15 sleeved on the outside of the air outlet pipe 7, then thread the connecting block 17 to the outside of the air outlet pipe 7, and make the connecting block 17 and the limiting piece 15 press tightly, then thread the clamping piece 8 to the outside of the air outlet pipe 7, and make the clamping piece 8 and the connecting block 17 press tightly, so as to press the limiting piece 15 into the give way ring groove 14, then plug the clamping piece 8 and the air outlet of the generator 5, so that the connecting hole 19 can be connected with the air outlet pipe 7 and the air outlet of the generator 5 respectively, then complete the connection between the rear handle 3 and the front handle 2, then insert the connector 4 into the rear handle 3, and plug the air inlet pipe 6 of the generator 5 with the connector 4.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A dental handpiece, characterized in that: The invention comprises an integrated machine head (1), a front handle (2) connected to the integrated machine head (1), a rear handle (3) connected to one end of the front handle (2), a joint (4) arranged at one end of the rear handle (3) away from the front handle (2), and a power generation device (5) arranged in the rear handle (3), wherein the integrated machine head (1) is provided with an air outlet pipe (7) located in the front handle (2), a clearance ring groove (14) is provided on the inner side of the end of the front handle (2) close to the rear handle (3), a limiting member (15) sleeved on the outer side of the air outlet pipe (7) is provided in the clearance ring groove (14), a pressing member (8) for pressing the limiting member (15) into the clearance ring groove (14) is provided on the outer side of the air outlet pipe (7), the pressing member (8) is plug-fitted with the air outlet of the power generation device (5), and the air inlet pipe (6) of the power generation device (5) is plug-fitted with the joint (4).

2. The dental handpiece according to claim 1, characterized in that: An external thread (16) is provided on the outside of the air outlet pipe (7) and near the power generation device (5); the clamping member (8) is provided with a connecting hole (19) which is connected to the air outlet pipe (7) and the air outlet hole of the power generation device (5) respectively; and an internal thread (20) which cooperates with the external thread (16) is provided in the connecting hole (19).

3. The dental handpiece according to claim 2, characterized in that: A connecting block (17) located between the limiting member (15) and the pressing member (8) is arranged on the outside of the air outlet pipe (7), and the connecting block (17) is provided with a threaded hole (18) that matches the external thread (16).

4. The dental handpiece according to claim 1, characterized in that: The inner side of the front handle (2) is provided with a positioning slot (21) which is in communication with the clearance ring groove (14), and the limiting member (15) is provided with a positioning plug block (22) which is plugged into and matched with the positioning slot (21).

5. The dental handpiece according to claim 1, characterized in that: An annular groove (24) is provided on the outside of the pressing member (8), and a sealing ring (25) is provided in the annular groove (24) and matches with the inner wall of the air outlet of the power generation device (5).

6. The dental handpiece according to claim 1, characterized in that: The limiting member (15) is provided with a plurality of vents (23).

7. The dental handpiece according to claim 2, characterized in that: The pressing piece (8) is cylindrical, and a twisting surface (27) is provided on the outer side of the pressing piece (8) for easy twisting.

8. The dental handpiece according to claim 1, characterized in that: An annular guide portion (26) is provided on the outer side of the pressing member (8) near the power generation device (5).

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