High-speed turbine handpiece with flat air inlet

Abstract

The utility model discloses a high-speed turbine handpiece with a flat air inlet, and relates to the technical field of dental medical instruments, the high-speed turbine handpiece with the flat air inlet comprises a turbine head, and one side of the turbine head is fixedly connected with a handle; the turbine head comprises a shell, and a space used for containing a turbine is formed in the shell. An air inlet and an air return port are formed in the side, close to the handle, of the shell and communicate with the space, used for containing the turbine, of the shell. The inner diameter of the air inlet is small, the air inlet is arranged in an inclined mode, the cross section of the air inlet is flat, under the condition that the size of a machine head is not changed, the force bearing point of output air on fan blades of a turbine is made to deviate outwards, abrasion of a shaft sleeve is reduced, and the service life is prolonged. In addition, the area of the air inlet is not reduced, airflow blown out of the air inlet is kept strong, and the power of the mobile phone is not affected under the condition that abrasion of the shaft sleeve is reduced.

Description

Technical Field

[0001] This utility model relates to the field of dental medical device technology, specifically a high-speed turbine handpiece with a flat air inlet. Background Technology

[0002] High-speed dental turbine handpieces are professional devices commonly used in dental treatment. They use high-pressure air to drive a miniature turbine inside the handpiece head, converting air pressure into rotational power, which causes the dental burs connected to the turbine to rotate at high speed, thereby enabling operations such as drilling, grinding, and cutting of teeth.

[0003] In a high-speed dental turbine handpiece, the turbine inside the handpiece is driven to rotate by high-pressure gas delivered from the handle and blown onto the turbine blades. If the stress point of the turbine blades is closer to the shaft, the turbine's rotational speed will be higher, and excessive turbine speed will shorten the handpiece's lifespan. Conversely, the closer the air inlet is to the center of rotation, the higher the rotational speed and the shorter the lifespan of the bushings. Furthermore, for handpieces with small handpiece sizes, due to size limitations, the high rotational speed cannot be reduced if the air inlet is close to the center of rotation. Therefore, the further the air inlet is from the shaft, the more outward the stress point of the turbine blades will be. However, the size of the handpiece is limited, and the air inlet cannot be infinitely outward. Utility Model Content

[0004] The purpose of this utility model is to provide a high-speed turbine mobile phone with a flat air inlet. The head housing inside the turbine cavity is provided with an air inlet and an air return port. The air inlet and the air return port are connected to the air inlet pipe and the air return pipe of the mobile phone handle, respectively. The air inlet is flat. Without changing the size of the head, the force point of the output gas on the turbine blades is shifted outward, so as to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-speed turbine handpiece with a flat air inlet includes a turbine head, one side of which is fixedly connected to a handle.

[0007] The turbine head includes a housing with an internal space for accommodating the turbine; an air inlet and an air outlet are provided on the side of the housing near the handle, and both the air inlet and the air outlet are connected to the space in the housing for accommodating the turbine.

[0008] The air inlet is inclined and flat; the air outlet is located on the side of the turbine near the inner wall of the housing, and the length-to-width ratio of the flat shape of the air inlet is 1.2-4.

[0009] As a further technical solution of this utility model, the handle is provided with an air inlet pipe and an air return pipe; the air inlet is connected to the air inlet pipe in the handle; the air return port is connected to the air return pipe in the handle; and the end of the outer shell near the air return port is fixedly connected to the handle.

[0010] As a further technical solution of this utility model, the inner side of the turbine is coaxially provided with a sleeve shaft, and a rubber ring is sleeved on the outer side of the upper end of the sleeve shaft, and the rubber ring is located between the turbine and the sleeve shaft; the side of the rubber ring away from the sleeve shaft is in contact with the inner wall of the turbine.

[0011] As a further technical solution of this utility model, the inner side of the sleeve shaft is coaxially fixedly connected to an inner shaft, and a gasket is provided on the outer side of the top of the inner shaft. The gasket is located inside the sleeve shaft and fits against the inner wall of the top of the sleeve shaft.

[0012] As a further technical solution of this utility model, a top cover is fixedly connected to the middle of the top of the outer shell. The top cover corresponds to the position of the sleeve shaft, and the top of the sleeve shaft is rotatably connected to the bottom of the top cover.

[0013] As a further technical solution of this utility model, the bottom of the outer shell is rotatably connected to an output connector, which corresponds to the position of the inner shaft, and the bottom of the inner shaft is fixedly connected to the top of the output connector.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this utility model, the inner diameter of the air inlet is small, it is inclined and has a flat cross-section. Without changing the size of the head, the force point of the output gas on the turbine blades is shifted outward, reducing the wear of the bushing and extending its service life. In addition, the air velocity in the air inlet is greater than the air velocity in the air outlet, keeping the airflow blown out of the air inlet strong. This reduces the wear of the bushing and inner shaft without affecting the turbine speed.

[0016] 2. In this utility model, the top cover serves to support the inner shaft and the sleeve shaft, preventing the turbine from shaking or shifting. The top cover also serves to seal, preventing airflow from leaking out of the outer casing and ensuring stability during operation by medical personnel. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the planar structure of this utility model.

[0018] Figure 2 This utility model Figure 1 A schematic diagram of the internal structure.

[0019] Figure 3 This utility model Figure 2 A magnified view of a portion of the image.

[0020] Figure 4 This utility model Figure 1 A magnified view of a portion of the image.

[0021] Figure 5 This utility model Figure 4 AA sectional view.

[0022] Figure 6 This utility model Figure 5 AA sectional view.

[0023] Figure 7 This utility model Figure 5 BB cross-sectional view.

[0024] In the diagram: 1-handle, 2-turbine head;

[0025] 21-Outer casing, 22-Inlet, 23-Outlet, 24-Shaft sleeve, 25-Rubber ring, 26-Turbine, 27-Top cover, 28-Output connector, 29-Gasket, 20-Inner shaft. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-7 In this embodiment of the present invention, a high-speed turbine mobile phone with a flat air inlet includes a turbine head 2, one side of which is fixedly connected to a handle 1.

[0028] The turbine head 2 includes a housing 21, which has a space inside for accommodating the turbine 26; the housing 21 has an air inlet 22 and an air outlet 23 on the side near the handle 1, and both the air inlet 22 and the air outlet 23 are connected to the space in the housing 21 for accommodating the turbine 26.

[0029] The air inlet 22 is inclined and flat; the air outlet of the air inlet 22 is located on the side of the turbine 26 near the inner wall of the outer casing 21.

[0030] The handle 1 is provided with an air inlet pipe and an air return pipe; the air inlet 22 is connected to the air inlet pipe in the handle 1; the air return port 23 is connected to the air return pipe in the handle 1; the end of the outer shell 21 near the air return port 23 is fixedly connected to the handle 1.

[0031] The inner side of the turbine 26 is coaxially provided with a sleeve shaft 24, and a rubber ring 25 is sleeved on the outer side of the upper end of the sleeve shaft 24, and the rubber ring 25 is located between the turbine 26 and the sleeve shaft 24; the side of the rubber ring 25 away from the sleeve shaft 24 is in contact with the inner wall of the turbine 26.

[0032] The inner shaft 20 is coaxially fixedly connected to the inner side of the sleeve shaft 24. A gasket 29 is provided on the outer side of the top of the inner shaft 20. The gasket 29 is located inside the sleeve shaft 24 and fits against the inner wall of the top of the sleeve shaft 24.

[0033] By adopting the above technical solution, the inner diameter of the air inlet 22 is small, it is inclined and has a flat cross-section. The length-to-width ratio of the flat shape of the air inlet 22 is 1.2-4. Without changing the size of the machine head, the force point of the output gas on the blades of the turbine 26 is shifted outward, reducing the wear of the sleeve shaft 24 and the inner shaft 20 and extending the service life. In addition, the air velocity in the air inlet 22 is greater than the air velocity in the return air inlet 23, so that the airflow blown out of the air inlet 22 remains strong and does not affect the speed of the turbine 26 while reducing the wear of the sleeve shaft 24 and the inner shaft 20.

[0034] In this embodiment, a top cover 27 is fixedly connected to the top center of the outer shell 21. The top cover 27 corresponds to the position of the sleeve shaft 24, and the top of the sleeve shaft 24 is rotatably connected to the bottom of the top cover 27.

[0035] The bottom of the outer casing 21 is rotatably connected to an output connector 28, which corresponds to the position of the inner shaft 20, and the bottom of the inner shaft 20 is fixedly connected to the top of the output connector 28.

[0036] By adopting the above technical solution, the top cover 27 serves to support the inner shaft 20 and the sleeve shaft 24, preventing the turbine 26 from shaking or shifting. The top cover 27 also serves to seal, preventing the airflow inside the outer casing 21 from leaking out and ensuring the stability of medical personnel during operation.

[0037] The working principle of this utility model is as follows: the inner diameter of the air inlet 22 is small, it is inclined and has a flat cross-section. Without changing the size of the machine head, the force point of the output gas on the blades of the turbine 26 is shifted outward, reducing the wear of the sleeve shaft 24 and the inner shaft 20 and extending the service life. In addition, the air velocity in the air inlet 22 is greater than the air velocity in the return air inlet 23, so that the airflow blown out of the air inlet 22 remains strong and does not affect the speed of the turbine 26 while reducing the wear of the sleeve shaft 24 and the inner shaft 20.

[0038] The top cover 27 serves to support the inner shaft 20 and the sleeve shaft 24, preventing the turbine 26 from shaking or shifting. The top cover 27 also serves to seal, preventing airflow from leaking out of the outer casing 21 and ensuring stability during operation by medical personnel.

[0039] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-speed turbine mobile phone with a flat air inlet, characterized in that: Includes a turbine head (2), one side of which is fixedly connected to a handle (1); The turbine head (2) includes a housing (21) with a space inside for accommodating the turbine (26); the housing (21) has an air inlet (22) and an air outlet (23) on the side near the handle (1), and the air inlet (22) is flat. The air inlet (22) and air outlet (23) are both connected to the space in the outer casing (21) used to accommodate the turbine (26); The length-to-width ratio of the flat shape of the air inlet (22) is 1.2-4; The inner side of the turbine (26) is coaxially provided with a sleeve shaft (24), and a rubber ring (25) is sleeved on the outer side of the upper end of the sleeve shaft (24), and the rubber ring (25) is located between the turbine (26) and the sleeve shaft (24); the side of the rubber ring (25) away from the sleeve shaft (24) is in contact with the inner wall of the turbine (26); The top of the outer shell (21) is fixedly connected to the middle of the top, and the top cover (27) corresponds to the position of the sleeve shaft (24), and the top of the sleeve shaft (24) is rotatably connected to the bottom of the top cover (27).

2. The high-speed turbine mobile phone with a flat air inlet according to claim 1, characterized in that: The air outlet of the air inlet (22) is located on the side of the turbine (26) near the inner wall of the outer casing (21).

3. The high-speed turbine mobile phone with a flat air inlet according to claim 1, characterized in that: The handle (1) is provided with an air inlet pipe and an air return pipe; the air inlet (22) is connected to the air inlet pipe in the handle (1); the air return port (23) is connected to the air return pipe in the handle (1); the end of the outer shell (21) near the air return port (23) is fixedly connected to the handle (1).

4. The high-speed turbine mobile phone with a flat air inlet according to claim 1, characterized in that: The inner shaft (20) is coaxially fixedly connected to the inner side of the sleeve shaft (24). A gasket (29) is provided on the outer side of the top of the inner shaft (20). The gasket (29) is located inside the sleeve shaft (24) and fits against the inner wall of the top of the sleeve shaft (24).

5. The high-speed turbine mobile phone with a flat air inlet according to claim 4, characterized in that: The bottom of the outer casing (21) is rotatably connected to an output connector (28), which corresponds to the position of the inner shaft (20), and the bottom of the inner shaft (20) is fixedly connected to the top of the output connector (28).

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