Handpiece movement assembly and dental handpiece

Abstract

The utility model discloses a handpiece core assembly and dental handpiece, including: drive shaft body, wind wheel piece, wind wheel piece sleeve the periphery of drive shaft body, wind wheel piece includes coaxial set first wind wheel and second wind wheel, the outer diameter of first wind wheel is greater than the outer diameter of second wind wheel. In the using process, high-pressure gas drives the first wind wheel and the second wind wheel to drive the driving shaft body to rotate so as to improve output force of the driving shaft body, meanwhile, the utilization rate of high-pressure air pressure is improved, the pagoda-shaped machine core assembly can meet the requirement for a narrow installation space, and the second wind wheel is close to the output end of the machine head. Therefore, the outer diameter of the output end of the machine head can be reduced, and the operation visual field is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dental treatment equipment, in particular to a handpiece core component and a dental handpiece. Background Art

[0002] A dental handpiece is a commonly used medical device in stomatology. Its working principle is to use high-pressure air to blow the turbine and then drive the bur to rotate at a high speed, usually above 200,000 revolutions per minute, to cut the tooth body to remove carious tissue, or to prepare porcelain teeth, and can also be used for grinding dentures, etc.

[0003] Among them, the core component is the power assembly in the dental handpiece. In order to expand the operation vision, generally the handpiece head will be made smaller. Therefore, the existing core component is limited by the installation space and generally adopts a single-turbine drive method. In this way, the utilization efficiency of high-pressure air is very low, and there will be a phenomenon of insufficient output or waste of high-pressure air. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a handpiece core component and a dental handpiece to solve one or more technical problems existing in the prior art, and at least provide a beneficial choice or create conditions.

[0005] The technical solution adopted to solve the above technical problems:

[0006] The utility model provides a handpiece core component, including:

[0007] A driving shaft body;

[0008] A wind wheel member sleeved on the outer periphery of the driving shaft body. The wind wheel member includes a first wind wheel and a second wind wheel arranged coaxially. The outer diameter of the first wind wheel is larger than that of the second wind wheel.

[0009] The beneficial effect of the utility model is:

[0010] The utility model sets the wind wheel member into a pagoda-shaped structure. The wind wheel member includes a first wind wheel and a second wind wheel with different outer diameters. When in use, high-pressure gas drives the first wind wheel and the second wind wheel to drive the driving shaft body to rotate, so as to improve the output of the driving shaft body, and at the same time, the utilization rate of high-pressure air is also provided. And the pagoda-shaped core component can meet the narrow installation space. The second wind wheel is close to the output end of the handpiece head, so that the outer diameter of the output end of the handpiece head can be reduced, and the operation vision can be improved.

[0011] As a further improvement of the above technical solution, the first wind wheel includes a first wheel body, and a plurality of first wind grooves inclined axially are annularly and evenly distributed on the outer periphery of the first wheel body;

[0012] The second wind wheel includes a second wheel body, and a plurality of second wind grooves which are annularly and uniformly arranged on the outer periphery of the second wheel body and are inclined axially are provided.

[0013] In the first wind wheel of this solution, a plurality of first wind grooves are machined on the outer periphery of the first wheel body, so that a blade structure can be formed between two adjacent first wind grooves. The second wind wheel also forms a blade structure between two adjacent second wind grooves by machining a plurality of second wind grooves on the outer periphery of the second wheel body, which improves the structural strength of the first wind wheel and the second wind wheel and avoids the deformation of the blades.

[0014] As a further improvement of the above technical solution, the first wheel body and the second wheel body are integrally formed.

[0015] In this solution, the first wheel body and the second wheel body are processed by an integral forming method, which is better in structural strength and is also convenient for production. The first wind grooves and the second wind grooves can be formed by a casting method.

[0016] As a further improvement of the above technical solution, the second wind grooves are arranged to be inclined in the same direction or in the opposite direction.

[0017] During use, the first wind wheel and the second wind wheel can be respectively corresponding to two different air chambers, and the two air chambers can be connected in parallel or in series. When the second wind grooves are inclined in the same direction, the high-pressure gas drives the first wind wheel and the second wind wheel to rotate in the same direction at the same time to increase the output of the drive shaft body. When the second wind grooves are inclined in the opposite direction, two high-pressure gases can be used to separately drive the first wind wheel and the second wind wheel to rotate. When driving the first wind wheel to rotate, the drive shaft body rotates around one direction. When driving the second wind wheel to rotate, the drive shaft body rotates around another direction, so as to realize the bidirectional rotation drive of the drive shaft body, and the operation of the two high-pressure gases can be switched according to different requirements.

[0018] As a further improvement of the above technical solution, the drive shaft body includes an inner shaft tube and an outer shaft tube which are sleeved inside and outside. The inner shaft tube includes a fixed section and a clamping section. The fixed section is fixedly sleeved with the outer shaft tube. The clamping section includes a plurality of elastic strip plates which are arranged at intervals in a ring shape. A clamping channel is formed between the inner peripheral sides of the plurality of elastic strip plates. The inner diameter of the clamping channel gradually decreases along the direction away from the fixed section. A clamping gap is provided between the outer peripheral sides of the plurality of elastic strip plates and the inner periphery of the outer shaft tube.

[0019] In actual use, the driving shaft is connected to the needle to drive the needle to rotate. At the same time, the dental mobile phone needs to replace the corresponding needle under different usage conditions. This solution can achieve rapid installation of the needle. Specifically, when installing the needle, the needle is inserted into the inner shaft tube from the fixed section toward the clamping section. At this time, the multiple elastic strips are pushed outward by the needle and opened. Under the elastic force of the elastic strips, the multiple elastic strips clamp the needle to achieve locking of the needle.

[0020] As a further improvement of the above technical solution, the end of the outer shaft tube in the same direction as the clamping section is provided with a pressing piece movably arranged along the axial direction, and the inner end of the pressing piece is provided with a conical head, which is inserted into the clamping channel to open the multiple elastic slats.

[0021] When the needle is removed, the pressing piece is pressed to insert the head into the clamping channel, so that the multiple elastic strips are stretched open to release the needle.

[0022] As a further improvement of the above technical solution, the outer end of the pressing member is provided with a pressing block located at the outer end side of the outer shaft tube, and a spring is provided between the pressing block and the outer shaft tube.

[0023] In this solution, a spring is used to act on the pressing block to drive the pressing piece to reset, so that the plug is at the outer end of the clamping channel in a free state. When the needle needs to be removed, the pressing block is pressed downward, the spring is compressed, and the plug is inserted into the clamping channel. When the pressing block is released, the plug is withdrawn from the clamping channel under the action of the reset elastic force of the spring.

[0024] As a further improvement of the above technical solution, the plug is provided with a step abutting against the inner side of the outer shaft tube, and the step is arranged opposite to the pressing block.

[0025] In this solution, the step abuts against the inner side of the outer shaft tube to limit the pressing piece. In a natural state, the spring pushes the pressing block to move outward, and the step at this time limits the pressing piece to prevent the pressing piece from falling off.

[0026] As a further improvement of the above technical solution, both ends of the driving shaft are provided with rotating bearings, and the wind wheel member is arranged between the two rotating bearings.

[0027] During installation, the drive shaft is rotatably installed in the machine head through two rotating bearings, which reduces friction and improves the smoothness of rotation.

[0028] In addition, the utility model also provides a dental mobile phone, which includes the mobile phone movement assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0030] Figure 1 is a schematic structural diagram of a mobile phone movement component provided by the present utility model in one embodiment;

[0031] Figure 2 is a front sectional view of a mobile phone movement component provided by the present utility model in one embodiment;

[0032] Figure 3 is a schematic structural diagram of a wind wheel component provided by the present utility model in one embodiment. Detailed implementation manners

[0033] This part will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but it cannot be understood as a limitation on the protection scope of the present utility model.

[0034] In the description of the present utility model, it should be understood that for orientation descriptions, such as up, down, front, back, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.

[0035] In the description of the present utility model, if there are descriptions with words such as "several", its meaning is one or more, and the meaning of multiple is more than two. Understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number.

[0036] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0037] Referring to Figures 1 to 3 , the following embodiments are made for the mobile phone movement component of the present utility model:

[0038] As Figure 1 and Figure 2 shown, the mobile phone movement component of the present utility model includes a drive shaft body 100 and a wind wheel component 200.

[0039] The wind wheel member 200 of this embodiment is sleeved on the outer periphery of the drive shaft body 100, and the wind wheel member 200 and the drive shaft body 100 are relatively fixed in the circumferential direction. For the circumferential fixing method, pin seats can be provided on the inner peripheral wall of the wind wheel member 200 and the outer peripheral wall of the drive shaft body 100. In some other embodiments, axially extending insertion slots can be provided on the inner peripheral wall of the wind wheel member 200, and ridges axially engaging with the insertion slots are provided on the outer peripheral wall of the drive shaft body 100.

[0040] During use, high-pressure gas drives the wind wheel member 200 to drive the drive shaft body 100 to rotate at a high speed.

[0041] As Figure 3 shown, the wind wheel member 200 of this embodiment includes a first wind wheel 210 and a second wind wheel 220. The first wind wheel 210 and the second wind wheel 220 are coaxially arranged. As Figure 1 and Figure 2 shown, the first wind wheel 210 and the second wind wheel 220 are sleeved together on the outer periphery of the drive shaft body 100. The outer diameter of the first wind wheel 210 is larger than the outer diameter of the second wind wheel 220, so that the wind wheel member 200 has a pagoda-shaped structure. During use, high-pressure gas can drive the first wind wheel 210 and the second wind wheel 220 to drive the drive shaft body 100 to rotate, so as to increase the output of the drive shaft body 100, improve the utilization rate of the high-pressure air pressure, and also meet the narrow installation space. The second wind wheel 220 is close to the output end of the machine head, so that the outer diameter of the output end of the machine head can be reduced, and the operation vision can be improved.

[0042] Furthermore, the first wind wheel 210 of this embodiment includes a first wheel body 211. A plurality of first wind grooves 212 are circumferentially and evenly distributed on the outer periphery of the first wheel body 211. The first wind grooves 212 are inclined axially. The second wind wheel 220 includes a second wheel body 221. A plurality of second wind grooves 222 are circumferentially and evenly distributed on the outer periphery of the second wheel body 221. The second wind grooves 222 are inclined axially. During use, high-pressure gas drives the first wind wheel 210 to rotate by pushing a plurality of first wind grooves 212, and high-pressure gas drives the second wind wheel 220 to rotate by pushing a plurality of second wind grooves 222. The inclined first wind grooves 212 and second wind grooves 222 can reduce wind resistance.

[0043] Moreover, the first wind wheel 210 forms a wind blade structure between adjacent two first wind grooves 212 by machining a plurality of first wind grooves 212 on the outer periphery of the first wheel body 211. The second wind wheel 220 also forms a wind blade structure between adjacent two second wind grooves 222 by machining a plurality of second wind grooves 222 on the outer periphery of the second wheel body 221, which improves the structural strength of the first wind wheel 210 and the second wind wheel 220, avoids the situation of wind blade deformation, and can meet higher-pressure gas.

[0044] Among them, the second air groove 222 and the second air groove 222 can be arranged in the same direction or in the opposite direction. During use, the first air wheel 210 and the second air wheel 220 are respectively corresponding to two different air chambers, and the two air chambers can be connected in parallel or in series.

[0045] When the second air groove 222 and the second air groove 222 are arranged in the same direction, the high-pressure gas drives the first air wheel 210 and the second air wheel 220 to rotate in the same direction at the same time to increase the output of the drive shaft body 100. At this time, the two air chambers can be connected in series with each other, and the high-pressure gas acts on the two air wheels in sequence, and the two air chambers can be connected in parallel with each other, and the high-pressure gas acts on the two air wheels at the same time.

[0046] When the second air groove 222 and the second air groove 222 are arranged in the opposite direction, two high-pressure gases can be used to separately drive the first air wheel 210 and the second air wheel 220 to rotate. When driving the first air wheel 210 to rotate, the drive shaft body 100 rotates around one direction, and when driving the second air wheel 220 to rotate, the drive shaft body 100 rotates around another direction, so as to realize the bidirectional rotation drive of the drive shaft body 100. The operation of the two high-pressure gases can be switched according to different needs. At this time, the two air chambers need to supply gas intermittently.

[0047] In order to improve the structural strength, the first wheel body 211 and the second wheel body 221 are integrally formed. The first wheel body 211 and the second wheel body 221 are processed by an integral forming method, which is better in structural strength and is also convenient for production. The first air groove 212 and the second air groove 222 can be formed by a casting method.

[0048] In some other embodiments, the first wheel body 211 and the second wheel body 221 can be of a split assembly type.

[0049] During actual use, the drive shaft body 100 is connected to the dental bur to drive the dental bur to rotate. At the same time, the dental handpiece needs to replace the corresponding dental bur in different usage situations. In order to realize the quick installation of the dental bur in this embodiment, the drive shaft body 100 is optimized and improved.

[0050] Such as Figure 2As shown, the drive shaft body 100 of this embodiment includes an inner shaft tube 110 and an outer shaft tube 120, and the inner shaft tube 110 and the outer shaft tube 120 are arranged in an inner and outer manner, wherein the inner shaft tube 110 includes a fixed section 111 and a clamping section 112 connected in sequence, the fixed section 111 is fixedly fitted with the outer shaft tube 120, and the clamping section 112 includes a plurality of elastic strips 1121, and the plurality of elastic strips 1121 are arranged in an annular manner, and the elastic strips 1121 extend axially, and one end of the elastic strips 1121 is fixedly connected to the fixed section 111, and a clamping channel 1122 is formed between the inner circumferences of the plurality of elastic strips 1121, and the inner diameter of the clamping channel 1122 of this embodiment is gradually reduced in the direction away from the fixed section 111, and a clamping gap 130 is arranged between the outer circumferences of the plurality of elastic strips 1121 and the inner circumference of the outer shaft tube 120, and a clamping groove 1123 is arranged between two adjacent elastic strips 1121.

[0051] When installing the needle, the needle is inserted into the inner shaft tube 110 from the fixing section 111 toward the clamping section 112. At this time, the multiple elastic strips 1121 are pushed outward and opened by the needle. Under the elastic force of the elastic strips 1121, the multiple elastic strips 1121 clamp the needle to achieve locking of the needle.

[0052] Furthermore, in this embodiment, a pressing piece 140 is provided at one end of the outer shaft tube 120 in the same direction as the clamping section 112. The pressing piece 140 is slidably arranged along the axial direction. A conical pin 141 is provided at the inner end of the pressing piece 140. The pin 141 is inserted into the clamping channel 1122 to expand the multiple elastic slats 1121. When removing the needle, the pressing piece 140 is pressed to insert the pin 141 into the clamping channel 1122, so that the multiple elastic slats 1121 are expanded to loosen the needle.

[0053] In addition, a pressing block 142 located on the outer end side of the outer shaft tube 120 is provided at the outer end of the pressing piece 140, and a spring 150 is provided between the pressing block 142 and the outer shaft tube 120. The spring 150 acts on the pressing block 142 to drive the pressing piece 140 to reset, so that the top head 141 is at the outer end of the clamping channel 1122 in a free state. When the needle needs to be removed, the pressing block 142 is pressed downward, the spring 150 is compressed, and the top head 141 is inserted into the clamping channel 1122. When the pressing block 142 is released, the top head 141 withdraws from the outside of the clamping channel 1122 under the action of the reset elastic force of the spring 150.

[0054] Moreover, the top end 141 is provided with a step 1411 that abuts against the inner side of the outer shaft tube 120. The step 1411 and the pressing block 142 are arranged opposite to each other. In this embodiment, the step 1411 abuts against the inner side of the outer shaft tube 120 to limit the pressing member 140. In the natural state, the spring 150 pushes the pressing block 142 to move outwards. At this time, the step 1411 limits the pressing member 140 to prevent the pressing member 140 from falling off.

[0055] Rotating bearings 160 are sleeved on both ends of the drive shaft body 100. The wind wheel member 200 is arranged between the two rotating bearings 160. During installation, the drive shaft body 100 is rotatably installed in the machine head through the two rotating bearings 160, reducing friction and improving the smoothness of rotation.

[0056] The present utility model also provides a dental handpiece, which includes the above-mentioned handpiece core assembly.

[0057] The above has specifically described the preferred embodiments of the present utility model. However, the present invention is not limited to the above embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. These equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A mobile phone movement component, characterized in that, Comprising: A drive shaft body (100); A wind wheel member (200), sleeved on the outer periphery of the drive shaft body (100), the wind wheel member (200) includes a first wind wheel (210) and a second wind wheel (220) arranged coaxially, and the outer diameter of the first wind wheel (210) is larger than the outer diameter of the second wind wheel (220).

2. The mobile phone movement assembly according to claim 1, wherein: The first wind wheel (210) includes a first wheel body (211), and a plurality of first wind grooves (212) inclined axially are annularly and uniformly arranged on the outer periphery of the first wheel body (211); The second wind wheel (220) includes a second wheel body (221), and a plurality of second wind grooves (222) inclined axially are annularly and uniformly arranged on the outer periphery of the second wheel body (221).

3. The mobile phone movement assembly according to claim 2, wherein: The first wheel body (211) and the second wheel body (221) are integrally formed.

4. The mobile phone movement assembly according to claim 2, wherein: The second wind grooves (222) are arranged to be inclined in the same direction or in the opposite direction as the second wind grooves (222).

5. The mobile phone movement assembly according to claim 1, wherein: The drive shaft body (100) includes an inner shaft tube (110) and an outer shaft tube (120) sleeved inside and outside, the inner shaft tube (110) includes a fixed section (111) and a clamping section (112), the fixed section (111) is fixedly sleeved with the outer shaft tube (120), the clamping section (112) includes a plurality of elastic strips (1121) arranged at intervals in a ring shape, a clamping channel (1122) is formed between the inner peripheral sides of the plurality of elastic strips (1121), the inner diameter of the clamping channel (1122) is gradually reduced along the direction away from the fixed section (111), and a clamping gap (130) is provided between the outer peripheral sides of the plurality of elastic strips (1121) and the inner periphery of the outer shaft tube (120).

6. The mobile phone movement assembly according to claim 5, wherein: One end of the outer shaft tube (120) in the same direction as the clamping section (112) is provided with a pressing member (140) arranged axially movably, the inner end of the pressing member (140) is provided with a conical head (141), and the head (141) is inserted into the clamping channel (1122) to expand the plurality of elastic strips (1121).

7. The mobile phone movement assembly according to claim 6, wherein: The outer end of the pressing member (140) is provided with a pressing block (142) located on the outer end side of the outer shaft tube (120), and a spring (150) is provided between the pressing block (142) and the outer shaft tube (120).

8. The mobile phone movement assembly according to claim 7, wherein: The head (141) is provided with a step (1411) in contact with the inner side of the outer shaft tube (120), and the step (1411) is arranged opposite to the pressing block (142).

9. The mobile phone movement assembly according to claim 1, wherein: Rotating bearings (160) are sleeved on both ends of the driving shaft body (100), and the wind wheel member (200) is arranged between the two rotating bearings (160).

10. A dental handpiece, characterized in that: It includes the mobile phone movement assembly according to any one of claims 1 to 9.

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