Dental handpiece capable of preventing optical fiber from being broken

Abstract

The dental handpiece comprises a handpiece head, a machine body, a mounting seat, a driving shaft and a shell, the output end of the handpiece head is provided with a machine needle for treating a patient in a transmission manner, the machine body is connected with the handpiece head, the machine body is provided with a mounting part, the inner wall of the mounting part is provided with a limiting seat, and the limiting seat is provided with an optical fiber and an air inlet pipe. The driving shaft is provided with a limiting hole and an air inlet, and the limiting hole and the air inlet can be inserted into the corresponding optical fiber and the air inlet pipe; the driving shaft is sleeved with the shell, and the shell is detachably connected with the mounting part. The dental handpiece has the advantages that by changing the installation mode of the optical fiber and the air inlet pipe, the risk that the optical fiber collides with the handpiece body is avoided while the assembly efficiency is improved, and therefore the service life of the dental handpiece is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of oral medical instruments and equipment, in particular to a dental handpiece which can prevent optical fiber from breaking. Background Art

[0002] The dental handpiece used in dental clinics is a precision micro-device, which is a commonly used type of dental medical instrument. At present, the optical fiber in most dental handpieces is set on the drive shaft. This design makes the optical fiber exposed to the outside, so that when the drive shaft of the dental handpiece is assembled with the body of the dental handpiece, the staff may easily cause the optical fiber to collide with the body, thereby affecting the service life of the dental handpiece. In severe cases, the optical fiber may be broken and damaged, making the dental handpiece unable to be used normally. Utility Model Content

[0003] In view of the above-mentioned defects, the purpose of the utility model is to provide a dental handpiece for preventing optical fiber from being exposed to the outside, thereby reducing the occurrence of optical fiber breakage.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] A dental handpiece for preventing optical fiber breakage comprises a handpiece, a body, a mounting seat, a drive shaft and a shell, and is characterized in that: the output end transmission of the handpiece is provided with a needle for treating a patient, the body is connected to the handpiece, the body is provided with a mounting portion, the inner wall of the mounting portion is provided with a limit seat, the limit seat is provided with an optical fiber and an air inlet pipe, the drive shaft is provided with a limit hole and an air inlet, the limit hole and the air inlet can be plugged with the corresponding optical fiber and the air inlet pipe; the shell sleeves the drive shaft, and the shell is detachably connected to the mounting portion.

[0006] Preferably, in the dental handpiece for preventing optical fiber breakage, a limit block is provided on the outer wall of the driving shaft, and the limit block abuts against the inner wall of the mounting portion.

[0007] Preferably, in the dental handpiece for preventing optical fiber breakage, the end of the optical fiber and the end of the air inlet pipe are flush with the mounting portion.

[0008] Preferably, in the dental handpiece for preventing optical fiber breakage, the outer wall of the mounting portion is provided with an external thread, the inner wall of the outer shell is provided with an internal thread, and the outer shell is threadably connected with the external thread through the internal thread.

[0009] Preferably, in the dental handpiece for preventing optical fiber breakage, a limiting step for supporting the driving shaft is provided inside the housing.

[0010] Preferably, in the above-mentioned dental handpiece for preventing optical fiber breakage, the limiting hole and the air inlet are adapted to the optical fiber and the air inlet pipe.

[0011] Beneficial effects of the utility model:

[0012] (1) Since the mounting part of the body is provided with a limit seat, the optical fiber and the air inlet pipe can be set at the position of the limit seat, and then connected through the limit hole and the air inlet port corresponding to the driving shaft, and finally the driving shaft is covered by the outer shell, and the outer shell is connected to the outer wall of the mounting part, so as to complete the assembly of the dental handpiece. By changing the installation method of the optical fiber and the air inlet pipe, the risk of collision between the optical fiber and the body can be well solved, thereby improving the service life of the dental handpiece.

[0013] (2) In addition, the limiting holes and air inlets provided on the drive shaft are connected to the optical fiber and the air inlet pipe, thereby playing an alignment and positioning role, reducing connection errors and improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of one embodiment of the utility model;

[0015] Figure 2 An exploded view of one embodiment of the utility model;

[0016] Figure 3 This is an exploded view of another embodiment of the utility model.

[0017] The machine body 10 includes a machine head 11 , a machine body 12 , a mounting seat 13 , a driving shaft 14 , a housing 15 , a needle 16 , a mounting portion 17 , a limiting seat 18 , an optical fiber 19 , an air inlet pipe 20 , a limiting hole 21 , an air inlet 22 , a limiting block 23 , and a limiting ladder 24 . DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0019] In the description of the present invention, it should be understood that the terms "longitudinal", "axial", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0022] like Figures 1 to 3 As shown, a dental handpiece for preventing optical fiber breakage comprises a handpiece 11, a body 12, a mounting seat 13, a drive shaft 14 and a housing 15, wherein the output end transmission of the handpiece 11 is provided with a needle 16 for treating a patient, the body 12 is connected to the handpiece 11, the body 12 is provided with a mounting portion 17, the inner wall of the mounting portion 17 is provided with a limit seat 18, the limit seat 18 is provided with an optical fiber 19 and an air inlet pipe 20, the drive shaft 14 is provided with a limit hole 21 and an air inlet 22, the limit hole 21 and the air inlet 22 can be plugged with the corresponding optical fiber 19 and the air inlet pipe 20; the housing 15 sleeves the drive shaft 14, and the housing 15 is detachably connected to the mounting portion 17; since the mounting portion 17 of the body 12 is provided with the limit seat 18, The optical fiber 19 and the air inlet pipe 20 can both be set at the position of the limit seat 18, and are connected through the limit hole 21 and the air inlet port 22 corresponding to the drive shaft 14. Finally, after the drive shaft 14 is covered by the shell 15, the shell 15 is connected to the outer wall of the mounting portion 17, thereby completing the assembly of the dental mobile phone. By changing the installation method of the optical fiber 19 and the air inlet pipe 20, the risk of collision between the optical fiber 19 and the body 12 can be well solved, thereby improving the service life of the dental mobile phone. In addition, it is worth mentioning that the limit hole 21 and the air inlet port 22 opened by the drive shaft 14 are connected with the optical fiber 19 and the air inlet pipe 20, which plays an alignment and positioning role, reduces connection errors, and improves assembly efficiency.

[0023] In the dental mobile phone of the present embodiment, a limit block 23 is provided on the outer wall of the driving shaft 14, and the limit block 23 abuts against the inner wall of the mounting portion 17. This design enables the driving shaft 14 to abut against the inner wall of the mounting portion 17 through the limit block 23 after being connected to the optical fiber 19 and the air inlet pipe 20 through the limit hole 21 and the air inlet 22, thereby making the driving shaft 14 more secure and avoiding the risk of breaking the optical fiber 19 due to the vibration generated by the driving shaft 14 during the operation of the dental mobile phone.

[0024] In the dental handpiece for preventing optical fiber breakage in this embodiment, the end of the optical fiber 19 and the end of the air inlet pipe 20 are flush with the mounting portion 17 ; such a design prevents the optical fiber 19 from being exposed to the outside and reduces the collision of the optical fiber 19 .

[0025] In some embodiments of the dental mobile phone, the outer wall of the mounting portion 17 is provided with an external thread, and the inner wall of the shell 15 is provided with an internal thread, and the shell 15 is connected to the external thread by threaded matching of the internal thread; the threaded matching connection method makes the assembly of the shell 15 and the mounting portion 17 more convenient and improves the assembly efficiency.

[0026] In the dental handpiece for preventing optical fiber breakage in this embodiment, a limiting step 24 for supporting the drive shaft 14 is arranged inside the housing 15; such a design prevents the drive shaft 14 from falling off after the housing 15 covers the drive shaft 14.

[0027] In the dental handpiece for preventing optical fiber breakage in this embodiment, the limiting hole 21 and the air inlet 22 are adapted to the optical fiber 19 and the air inlet pipe 20 ; such a design facilitates the plug-in assembly of the limiting hole 21 and the air inlet 22 with the optical fiber 19 and the air inlet pipe 20 .

[0028] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A dental handpiece for preventing optical fiber breakage, comprising a handpiece, a body, a mounting seat, a drive shaft and a housing, characterized in that: The output end transmission of the handpiece is provided with a needle for treating the patient, the body is connected to the handpiece, the body is provided with a mounting portion, the inner wall of the mounting portion is provided with a limit seat, the limit seat is provided with an optical fiber and an air inlet pipe, the drive shaft is provided with a limit hole and an air inlet, the limit hole and the air inlet can be plugged with the corresponding optical fiber and the air inlet pipe; the outer shell sleeves the drive shaft, and the outer shell is detachably connected to the mounting portion.

2. The dental handpiece for preventing optical fiber breakage according to claim 1, characterized in that: A limit block is disposed on the outer wall of the driving shaft, and the limit block abuts against the inner wall of the mounting portion.

3. The dental handpiece for preventing optical fiber breakage according to claim 1, characterized in that: The end of the optical fiber and the end of the air inlet pipe are flush with the mounting portion.

4. The dental handpiece according to claim 1, characterized in that: The outer wall of the mounting portion is provided with an external thread, the inner wall of the outer shell is provided with an internal thread, and the outer shell is threadably connected with the external thread through the internal thread.

5. The dental handpiece for preventing optical fiber breakage according to claim 1 or 4, characterized in that: A limiting step for supporting the driving shaft is arranged inside the shell.

6. The dental handpiece for preventing optical fiber breakage according to claim 1, characterized in that: The limiting hole and the air inlet are adapted to the optical fiber and the air inlet pipe.

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