Dental handpiece recognition device, dental medical instrument and dental medical system

Abstract

The utility model belongs to the technical field of dental medical instruments, and relates to a dental handpiece recognition device, a dental medical instrument and a dental medical system.The dental handpiece recognition device comprises a main body used for driving a dental handpiece, and the main body is provided with a first conductive part, a second conductive part and a control assembly; the control assembly is configured to detect impedance between the first conductive part and the second conductive part and identify the type of the dental handpiece connected to the main body; and the prompting assembly is configured to send out a prompting signal according to the type of the dental handpiece identified by the control assembly. When the main body is connected to the dental handpiece, the first conductive part and the second conductive part are electrically connected to the dental handpiece to form a current loop communicated to the control assembly, or one of the first conductive part and the second conductive part is electrically isolated from the dental handpiece, and the other one is electrically connected with the dental handpiece. The control assembly identifies the corresponding dental handpiece type according to the numerical value of the impedance, and the prompting assembly informs the connected dental handpiece type according to the identified dental handpiece type.

Description

Technical Field

[0001] This application relates to the field of dental medical device technology, and more specifically, to a dental handpiece recognition device, a dental medical device, and a dental medical system. Background Technology

[0002] In the prior art, dental medical devices used to treat dental patients include a dental handpiece and a main body, with the main body containing a motor. Different dental medical devices have different types and performance of dental handpieces, such as deceleration dental handpieces, acceleration dental handpieces, and isokinetic dental handpieces. To facilitate the differentiation of these different dental handpieces, they are usually designed with multiple colors or laser-engraved or wire-printed on the handpiece.

[0003] In clinical use, users need to connect the dental handpiece to the main unit so that the motor inside the main unit can drive the handpiece for surgery. However, because there are many types of dental handpieces compatible with the main unit, users may select the wrong handpiece, resulting in discrepancies between the handpiece's rotation speed, torque, and other parameters and those displayed on the main unit. This increases the uncertainty of the surgery and may even lead to surgical failure.

[0004] In summary, existing technologies suffer from drawbacks such as low efficiency and poor accuracy in dental handpiece and subject recognition. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides the following solutions:

[0006] A dental handpiece recognition device for connecting a dental handpiece, the dental handpiece recognition device comprising:

[0007] The main body is used to drive the dental handpiece. The main body is provided with a first conductive part, a second conductive part, and a control component. The first conductive part and the second conductive part are independently and electrically connected to the control component.

[0008] When the main body is connected to the dental handpiece, both the first conductive part and the second conductive part are electrically connected to the dental handpiece and form a current loop connected to the control component; or, when the main body is connected to the dental handpiece, one of the first conductive part and the second conductive part is electrically isolated from the dental handpiece, and the other is electrically connected to the dental handpiece.

[0009] The control component is configured to detect the impedance between the first conductive part and the second conductive part, and to identify the type of dental handpiece connected to the body based on the value of the impedance.

[0010] A prompting component is configured to issue a prompting signal based on the type of dental handpiece identified by the control component, to indicate the type of dental handpiece connected to the body.

[0011] Furthermore, the main body includes a motor flange adapter, an insulating sleeve, and a conductive component. The first conductive part is disposed on the conductive component, and the second conductive part is disposed on the motor flange adapter. The main body also includes a motor assembly for driving the dental handpiece.

[0012] The motor flange adapter is sleeved on the motor assembly, and the insulating sleeve is disposed between the conductive component and the motor flange adapter.

[0013] Furthermore, the motor assembly includes a motor, a motor flange, a motor shaft, and a motor connector. The dental handpiece includes a connector. The motor flange is fitted onto the motor. The motor shaft passes through the motor connector. The motor connector is connected to the connector. The motor is used to drive the motor shaft so that the motor shaft drives the motor connector, thereby causing the connector to move.

[0014] Furthermore, the motor flange is an insulating component and is disposed between the motor and the motor flange adapter.

[0015] Furthermore, the outer wall of the motor flange adapter is provided with a first boss, and the insulating sleeve abuts against the side of the first boss away from the motor assembly; and / or,

[0016] The insulating sleeve is fitted onto the outer wall of the motor flange adapter; and / or,

[0017] The conductive element is sleeved on the outer wall of the insulating sleeve; and / or,

[0018] The outer wall of the insulating sleeve is provided with a second protrusion, and the conductive element abuts against the side of the second protrusion away from the motor assembly.

[0019] Furthermore, the notification component includes at least one of a display screen, a speaker, a light fixture, and a vibration component; and / or,

[0020] The control component stores multiple preset impedances and parameter information corresponding to each preset impedance. When the main body is connected to the dental handpiece, the control component compares the detected impedance with each of the multiple preset impedances and determines the parameter information corresponding to the impedance. The prompting component is configured to receive the parameter information corresponding to the impedance and issue a corresponding prompt signal based on the parameter information; and / or,

[0021] The dental handpiece recognition device further includes an operating element configured to control the operating mode and operating efficiency of the dental handpiece; and / or,

[0022] The control component includes a control element and a differential amplifier circuit. One end of the differential amplifier circuit is electrically connected to the first conductive part and the other end is electrically connected to the control element for amplifying current signals. The control element is configured to detect the impedance between the first conductive part and the second conductive part, and to identify the type of dental handpiece connected to the main body based on the impedance value. The prompting component is electrically connected to the control element.

[0023] Accordingly, this application also provides a dental medical device, the dental medical device comprising:

[0024] A first dental handpiece, the first dental handpiece being provided with a first abutting part and a second abutting part;

[0025] The handle includes the dental handpiece recognition device described in any of the above embodiments. The handle is connected to the first dental handpiece, the first abutting part abuts against the first conductive part, the second abutting part abuts against the second conductive part, and a current loop is formed between the first conductive part, the first abutting part, the second conductive part, the second abutting part, and the control component.

[0026] Accordingly, this application also provides a dental medical device, characterized in that the dental medical device comprises:

[0027] A second dental handpiece, the second dental handpiece being provided with a third abutment;

[0028] The handle includes the dental handpiece recognition device described in any of the above embodiments. The handle is connected to the second dental handpiece, the second conductive part abuts against the third abutting part, and the first conductive part is electrically isolated from the second dental handpiece.

[0029] Accordingly, this application also provides a dental medical device, characterized in that the dental medical device comprises:

[0030] A third dental handpiece, wherein the third dental handpiece is provided with a fourth abutment part;

[0031] The handle includes the dental handpiece recognition device described in any of the above embodiments. The handle is connected to the fourth dental handpiece, the fourth abutment portion abuts against the first conductive portion, and the second conductive portion is electrically isolated from the third dental handpiece.

[0032] Accordingly, this application also provides a dental medical system, characterized in that the dental medical system comprises:

[0033] A first dental handpiece, the first dental handpiece being provided with a first abutting part and a second abutting part;

[0034] Second dental handpiece;

[0035] The handle includes the dental handpiece recognition device described in any of the above embodiments, and is connected to the first dental handpiece or the second dental handpiece for driving the first dental handpiece or the second dental handpiece to operate;

[0036] When the main body is connected to the first dental handpiece, both the first conductive part and the second conductive part are electrically connected to the first dental handpiece. When the main body is connected to the second dental handpiece, one of the first conductive part and the second conductive part is electrically isolated from the second dental handpiece, and the other is electrically connected to the second dental handpiece. The control component is configured to detect the impedance between the first conductive part and the second conductive part, and determine the type of dental handpiece connected to the handle based on the impedance.

[0037] A prompting component configured to emit a prompting signal to indicate the type of dental handpiece connected to the handle.

[0038] Furthermore, a first connecting component is provided at one end of the main body, and the dental medical device further includes:

[0039] Of the first dental handpiece and the second dental handpiece, one is a rinsing dental handpiece and the other is a root canal preparation dental handpiece. The rinsing dental handpiece is provided with a second connecting component, and the root canal preparation dental handpiece is provided with a third connecting component. The second connecting component and the third connecting component have the same structure.

[0040] The second connecting component and the third connecting component are independently and detachably connected to the first connecting component.

[0041] Furthermore, the second connecting component includes a third adapter and a first drive shaft assembly. The first drive shaft assembly is located inside the third adapter. The main body is provided with a insertion hole, and a drive shaft is provided inside the insertion hole. The third adapter is sleeved on the drive shaft and inserted into the insertion hole. The drive shaft is used to drive the first drive shaft assembly to move.

[0042] Furthermore, the second connecting component also includes a plurality of first positioning pins, which are arranged along the axial direction of the third adapter. The main body is provided with a plurality of positioning holes, and the first positioning pins are inserted into the positioning holes and are interference-fitted with the positioning holes.

[0043] Furthermore, the third adapter has a chamfered opening, a first annular groove on its outer wall near the chamfer, and an elastic annular protrusion inside the insertion hole, the elastic annular protrusion abutting against the first annular groove; and / or,

[0044] The dental handpiece is provided with a first working tip at the end away from the second connecting assembly. One end of the first drive shaft assembly is connected to the drive shaft, and the other end is connected to the first working tip. A brushless motor is also provided inside the main body, which drives the drive shaft to move the first working tip; and / or,

[0045] The dental handpiece also includes a speed-increasing gear set, which is used to proportionally increase the rotational speed of the drive shaft to that of the first transmission shaft set; and / or,

[0046] The main body contains a circuit assembly for controlling the switching frequency and output torque of the brushless motor; and / or,

[0047] The speed of the brushless motor is 3500 r / min to 18000 r / min.

[0048] Compared with the prior art, the technical solution of this utility model has the following advantages:

[0049] After the main body is connected to the dental handpiece, both the first conductive part and the second conductive part are electrically connected to the dental handpiece, forming a current loop connected to the control component. Alternatively, when the main body is connected to the dental handpiece, one of the first conductive part and the second conductive part is electrically isolated from the dental handpiece, while the other is electrically connected to the dental handpiece. Therefore, different impedances can be detected when the main body is connected to different dental handpieces. The control component can identify the corresponding dental handpiece type based on the impedance value, and then the prompting component can issue a prompt signal based on the dental handpiece type identified by the control component, thereby informing the user of the type of dental handpiece currently connected to the main body. Attached Figure Description

[0050] To more clearly illustrate the solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0051] Figure 1 This is a schematic diagram of the structure of a dental medical device according to an embodiment of the present invention;

[0052] Figure 2 This is an exploded structural diagram of a dental medical device according to an embodiment of the present invention;

[0053] Figure 3 This is a schematic diagram of the structure of the first dental handpiece and the main body after assembly according to an embodiment of this utility model;

[0054] Figure 4 yes Figure 3 Enlarged diagram of point A in the diagram;

[0055] Figure 5 This is a schematic diagram of the structure of the second dental handpiece and the main body after assembly according to an embodiment of the present invention;

[0056] Figure 6 yes Figure 5 Enlarged diagram of point B in the image;

[0057] Figure 7 This is a schematic diagram of the structure of the insulating sleeve according to an embodiment of the present utility model;

[0058] Figure 8 This is a schematic diagram of the PCBA board of this utility model;

[0059] Figure 9 This is a schematic diagram of the first dental handpiece of this utility model after assembly with the main body;

[0060] Figure 10 This is a schematic diagram of the second dental handpiece of this utility model after assembly with the main body;

[0061] Figure 11 This is a schematic diagram of the structure of a dental medical device according to an embodiment of the present invention;

[0062] Figure 12 This is a cross-sectional view of the main body of an embodiment of this utility model;

[0063] Figure 13 This is a cross-sectional view of a dental handpiece used for rinsing according to an embodiment of the present invention.

[0064] Figure label:

[0065] Dental handpiece 100, third adapter 110, first annular groove 111, first positioning pin 120, first working tip 130, connecting part 131, working part 132, outer shell 140, eccentric shaft 150, moving component 160, root canal preparation dental handpiece 200, second sleeve 210, second annular groove 211, second positioning pin 220, second working tip 230, main body 300, first connecting assembly 310, insertion hole 311, positioning insertion hole 312, brushless motor 320, electric... Road assembly 330, drive shaft 340, motor assembly 350, motor 351, motor shaft 352, motor connector 353, motor flange 354, PCBA board 360, indicator assembly, motor flange adapter 370, first boss 371, first dental handpiece 410, first connector 411, first adapter 412, first abutment 413, second dental handpiece 420, second connector 421, second adapter 422, conductive component 500, insulating sleeve 600, second boss 610. Detailed Implementation

[0066] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0067] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0068] To solve the above technical problems, please refer to Figures 1-6 This utility model provides a dental handpiece recognition device for connecting a single dental handpiece among multiple dental handpieces. The dental handpiece recognition device includes:

[0069] The main body 300 is used to drive a dental handpiece. The main body is provided with a first conductive part, a second conductive part and a control component. The first conductive part and the second conductive part are independently electrically connected to the control component.

[0070] When the main body 300 is connected to the dental handpiece, both the first conductive part and the second conductive part are electrically connected to the dental handpiece and form a current loop connected to the control component. Alternatively, when the main body is connected to the dental handpiece, one of the first conductive part and the second conductive part is electrically isolated from the dental handpiece, and the other is electrically connected to the dental handpiece.

[0071] The control component is configured to detect the impedance between the first conductive part and the second conductive part, and to identify the type of dental handpiece connected to the body based on the impedance value.

[0072] The prompting component 361 is configured to issue a prompting signal based on the type of dental handpiece identified by the control component, to indicate the type of dental handpiece connected to the main body.

[0073] In this embodiment, when the main body 300 is connected to the dental handpiece, both the first conductive part and the second conductive part are electrically connected to the dental handpiece and form a current loop connected to the control component. Alternatively, when the main body 300 is connected to the dental handpiece, one of the first conductive part and the second conductive part is electrically isolated from the dental handpiece, while the other is electrically connected to the dental handpiece.

[0074] by Figures 3-6 Taking the main body of the device as an example, which is connected to the first dental handpiece 410 and the second dental handpiece 420 respectively, Figure 3 The first dental handpiece 410 is provided with a first abutting part 413. Therefore, after the main body 300 is connected to the first dental handpiece 410, the first conductive part (provided on the motor flange adapter 370) will be connected to the first dental handpiece (first dental handpiece adapter), and the second conductive part (provided on the conductive part 500) will abut against the first abutting part 413. Thus, a current loop is formed between the first conductive part, the second conductive part and the first dental handpiece 410, so the control component can detect the impedance between the first conductive part and the second conductive part.

[0075] When the main body 300 is connected to the second dental handpiece 420, the second dental handpiece 420 is provided with a third abutment (second adapter 422), which is electrically connected to the motor flange adapter 370, but is not provided with a part that can be connected to the second conductive part (conductive part 500). Therefore, after the main body and the second dental handpiece 420 are connected, the control component cannot detect the impedance of the second dental handpiece 420, which can also be understood as the impedance being infinite.

[0076] Therefore, the control component can identify the type of dental handpiece currently connected to the main unit based on the impedance value, and then issue a prompt message through the prompt component 361 to inform the user of the current dental handpiece type. It should be understood that the control component includes the PCBA board 360 shown in the figure.

[0077] For further details, please refer to... Figures 1-6 The main body includes a motor flange adapter 370, an insulating sleeve 600, and a conductive part 500. A first conductive part is disposed on the conductive part 500, and a second conductive part is disposed on the motor flange adapter 370. The main body also includes a motor assembly, which is used to drive a dental handpiece.

[0078] The motor flange adapter 370 is sleeved on the motor assembly 350, and the insulating sleeve 600 is disposed between the conductive part 500 and the motor flange adapter 370.

[0079] In this embodiment, the insulating sleeve 600 can isolate the motor flange adapter 370 and the conductive component 500 to prevent them from being directly electrically connected, which would affect the control component's judgment of the impedance values ​​of dental handpieces such as the first dental handpiece 410 and the second dental handpiece 420.

[0080] Furthermore, the motor assembly 350 includes a motor 351, a motor flange 354, a motor shaft 352, and a motor connector 353. The dental handpiece includes a connector. The motor flange 354 is sleeved on the motor 351. The motor shaft 352 passes through the motor connector 353. The motor connector 353 is connected to the connector. The motor 351 is used to drive the motor shaft 352 so that the motor shaft 352 drives the motor connector 353, thereby driving the connector to move.

[0081] In this embodiment, the connectors include a first connector 411 and a second connector 421. When the motor assembly 350 includes a motor 351, a motor flange 354, a motor shaft 352, and a motor connector 353, the motor 351 can drive the motor shaft 352 to rotate, thereby causing the motor connector 353 to move. Since the motor connector 353 can be connected to the first connector 411 of the first dental handpiece 410 or the second connector 421 of the second dental handpiece 420, it can drive the first dental handpiece 410 or the second dental handpiece 420 to move.

[0082] Furthermore, the motor flange 354 is an insulating component and is located between the motor 351 and the motor flange adapter 370 to electrically isolate the motor 351 and the motor flange adapter 370.

[0083] In this embodiment, the motor flange adapter 370 needs to be connected to the first adapter 412 or the second adapter 422, so it needs to be conductive. The motor 351 is also usually conductive. In order to avoid electrical connection between the two, which would affect the recognition of the dental handpiece, the motor flange 354 in this embodiment is an insulating part, thereby electrically isolating the motor 351 and the motor flange adapter 370.

[0084] For further details, please refer to... Figures 4 to 11The outer side wall of the motor flange adapter 370 is provided with a first boss 371, and the insulating sleeve 600 abuts against the side of the first boss 371 away from the motor assembly 350.

[0085] In this embodiment, the first boss 371 can support the insulating sleeve 600 and restrict the insulation from sliding along the X direction in the figure, thereby preventing the insulating sleeve 600 from sliding off along the outer side wall of the motor flange adapter 370.

[0086] For further details, please refer to... Figures 4-9 An insulating sleeve 600 is fitted onto the outer wall of the motor flange adapter 370; and / or,

[0087] The conductive element 500 is sleeved on the outer wall of the insulating sleeve 600; and / or,

[0088] The outer wall of the insulating sleeve 600 is provided with a second protrusion 610, and the conductive element 500 abuts against the side of the second protrusion 610 away from the motor assembly 350.

[0089] In this embodiment, the insulating sleeve 600 is fitted onto the outer wall of the motor flange adapter 370, thus preventing the insulating sleeve 600 from moving along the Z direction in the figure, thereby improving its stability. The conductive element 500 is fitted onto the outer wall of the insulating sleeve 600, preventing the conductive element 500 from moving along the Z direction in the figure, thereby improving its stability. The second protrusion 610 provided on the outer wall of the insulating sleeve 600 can support the conductive element 500 and restrict the insulation from sliding along the X direction in the figure, thereby preventing the conductive element 500 from sliding and slipping off along the outer wall of the motor flange adapter 370.

[0090] Furthermore, the prompting component 361 includes at least one of a display screen, a speaker, a light fixture, and a vibration component; and / or,

[0091] The control component stores multiple preset impedances and corresponding parameter information. When the main body 300 is connected to the dental handpiece, the control component compares the detected impedance with the multiple preset impedances one by one and determines the corresponding parameter information. The prompt component 361 receives the parameter information corresponding to the impedance and issues a corresponding prompt signal based on the parameter information; and / or,

[0092] The dental handpiece recognition device also includes an operating element configured to control the operating mode and efficiency of the dental handpiece; and / or,

[0093] The control component includes a control element and a differential amplifier circuit. One end of the differential amplifier circuit is electrically connected to the first conductive part and the other end is electrically connected to the control element. It is used to amplify the current signal. The control element is configured to detect the impedance between the first conductive part and the second conductive part, and to identify the type of dental handpiece connected to the main body based on the impedance value. The prompting component 361 is electrically connected to the control element.

[0094] In this embodiment, the prompting component 361 can be a speaker, a vibration component, a lamp, or a display screen, and then prompt the user with prompting information, such as a specific sound, vibration frequency, flashing light, or display pattern on the display screen, to indicate the type of dental handpiece currently connected to the main body.

[0095] Because the control component stores multiple preset impedances and corresponding parameter information (such as the model, power, and function of the dental handpiece), when the main body 300 is connected to the dental handpiece, the control component can compare the currently detected impedance value with the preset impedances and determine the corresponding parameter information. Finally, the prompting component 361 receives the parameter information corresponding to the impedance and issues a corresponding prompt signal based on the parameter information.

[0096] The control components can be screens, buttons, voice input components, etc. Users can change the output power of the current main unit and / or the operating mode of the dental handpiece by touching the screen, pressing the button, or outputting specific voice commands.

[0097] Differential amplifier circuits can effectively amplify current information, thereby enabling the control unit to accurately determine the impedance value between the first and second conductive terminals, thus improving recognition accuracy.

[0098] It should be understood that the control components may include a motor assembly 350 and a PCBA board 360, wherein the PCBA board 360 is provided with an operating component, a control component and a differential amplifier circuit, and the conductive component 500 and the motor flange adapter 370 are directly electrically connected to the PCBA board 360.

[0099] For further details, please refer to... Figures 1-6 This utility model embodiment also provides a dental medical device, which includes:

[0100] The first dental handpiece 410 is provided with a first abutting part 413 and a second abutting part (first adapter 412);

[0101] The handle includes a dental handpiece recognition device according to any of the above embodiments. The handle is connected to the first dental handpiece 410. The first abutment 413 abuts against the first conductive part (conductive member 500), and the second abutment abuts against the second conductive part (motor flange adapter 370). A current loop is formed between the first conductive part, the first abutment, the second conductive part, the second abutment and the control component.

[0102] In this embodiment, the first dental handpiece 410 further includes a first abutment portion 413 electrically connected to a first conductive portion (conductive member 500) on the handle, and a second abutment portion (first dental handpiece adapter 412) electrically connected to a second conductive portion (motor flange adapter 370) on the handle. At this time, a current loop is formed between the first conductive portion and the second conductive portion, so that the control component can detect an impedance of a certain value. At this time, the control component can identify the type of the first dental handpiece 410 based on the impedance, and then prompt the user with the type of dental handpiece through the prompting component 361.

[0103] It should be understood that there can be multiple first dental handpieces 410, and the impedances of the multiple first dental handpieces 410 are different. In this case, the control component can determine the type of the first dental handpiece 410 based on the difference in impedance.

[0104] For further details, please refer to... Figures 1-6 This application also provides a dental medical device, which includes:

[0105] Second dental handpiece 420;

[0106] The handle includes the dental handpiece recognition device of any of the above embodiments, the handle is connected to the second dental handpiece 420, and the first conductive part or the second conductive part is electrically isolated from the second dental handpiece 420.

[0107] In this embodiment, the second dental handpiece 420 is provided with a second adapter 422, which is connected to the motor flange adapter 370. However, the second dental handpiece 420 is not connected to the conductive part 500. Therefore, the first conductive part of the main body 300 is not connected, while the second conductive part is connected. The impedance detected by the control component is infinite. At this time, the control component can also identify the type of the second dental handpiece.

[0108] For further details, please refer to... Figures 1-6 This application also provides a dental medical device, which includes:

[0109] The third dental handpiece has a fourth contact part;

[0110] The handle includes the dental handpiece recognition device of any of the above embodiments, the handle is connected to the third dental handpiece, the fourth abutment portion abuts against the first conductive portion, and the second conductive portion is electrically isolated from the third dental handpiece.

[0111] In this embodiment, since the third dental handpiece is not connected to the second conductive part (motor flange adapter 370), the second conductive part of the main body 300 is not connected, while the first conductive part is connected. The impedance detected by the control component is infinite. At this time, the control component can also identify the type of the second dental handpiece.

[0112] Accordingly, this application provides a dental medical system, which includes:

[0113] A first dental handpiece 410 is provided with a first abutting part 413 and a second abutting part;

[0114] Second dental handpiece 420;

[0115] The handle includes the dental handpiece recognition device of any of the above embodiments and is connected to the first dental handpiece 410 or the second dental handpiece 420 for driving the first dental handpiece 410 or the second dental handpiece 420 to operate.

[0116] When the main body 300 is connected to the first dental handpiece 410, both the first conductive part and the second conductive part are electrically connected to the first dental handpiece 410. When the main body is connected to the second dental handpiece 420, the first conductive part or the second conductive part is electrically isolated from the second dental handpiece 420. The control component is configured to detect the impedance between the first conductive part and the second conductive part, and determine the connection object of the main body 300 based on the impedance.

[0117] The prompting component 361 is used to issue a prompting signal to indicate the target of the dental handpiece recognition device connection.

[0118] In this embodiment, the first dental handpiece 410 is provided with a first abutment portion 413. Therefore, after the main body is connected to the first dental handpiece 410, the first conductive part (motor flange adapter 370) will be connected to the first dental handpiece 410 (first dental handpiece adapter 412), and the second conductive part (conductive part 500) will abut against the first abutment portion 413. Thus, a current loop is formed between the first conductive part, the second conductive part, and the first dental handpiece 410, so the control component can detect the impedance between the first conductive part and the second conductive part.

[0119] When the main body is connected to the second dental handpiece 420, the second dental handpiece 420 does not have a connection point to the second conductive part (conductive element 500). Therefore, after the main body and the second dental handpiece 420 are connected, the control component cannot detect the impedance of the second dental handpiece 420, which can be understood as having infinite impedance. Therefore, the control component can identify the type of dental handpiece currently connected to the main body based on the impedance value, and then issue a prompt message through the prompt component 361 to inform the user of the current dental handpiece type.

[0120] Further, please refer to Figures 9-10 When the first dental handpiece 410 is connected to the main body, the control component on the main body can transmit the second excitation signal and the first excitation signal to the motor flange adapter 370 and the conductive component 500, respectively. At this time, since the first adapter 412 and the conductive component 500 are electrically connected, both the first excitation signal and the second excitation signal can reach the first dental handpiece 410. The control component, the motor flange adapter 354, the first dental handpiece 410, and the conductive component 500 form a path. The control component receives the electrical signal fed back from the first dental handpiece 410, and this electrical signal is amplified by the differential amplifier circuit, thereby enabling the control component to detect the impedance of this path, that is, the impedance between the motor flange adapter 370 and the conductive component 500. When the second dental handpiece 420 is connected to the main body, the control component still transmits the first excitation signal and the second excitation signal to the motor flange adapter 370 and the conductive component 500, respectively. However, at this time, the conductive component 500 cannot be electrically connected to the second dental handpiece 420, and only the first excitation signal can reach the second dental handpiece 420. Therefore, the impedance detected by the control component is infinite.

[0121] It should be understood that the differential amplifier circuit can amplify the current transmitted back to the control unit from the first or second dental handpiece, thereby making the impedance value obtained by the control unit easier for the control component to identify, thus improving the identification accuracy.

[0122] Current clinical surgeries, such as dental procedures, typically involve two steps: root canal preparation and irrigation. The root canal preparation step requires a root canal preparation machine, which precisely removes infected material such as bacteria and necrotic pulp tissue from the root canal. It uses rotating or reciprocating instruments to cut and shape the root canal walls, preparing it for subsequent root canal filling or sonic irrigation. Irrigation can be performed using a sonic irrigation machine. The sonic irrigation machine uses the vibration of sound waves to flush out bacteria, debris, and necrotic tissue from the root canal. It can reach deep into the small branches and lateral canals of the root canal, effectively removing infected material from areas that are difficult to reach with traditional irrigation methods.

[0123] In the existing technology, the root canal preparation machine and the sonic irrigation machine are two independent machines. Therefore, users need to switch between the machines at different steps. Especially when repeatedly performing root canal preparation and irrigation, the entire machine needs to be switched repeatedly and the corresponding operation settings need to be made, resulting in low user efficiency.

[0124] To solve the above problems, please refer to... Figure 11 This utility model provides a dental medical device. One end of the main body 300 is provided with a first connecting component 310. One of the first dental handpieces 410 and the second dental handpiece 420 is a rinsing dental handpiece 100 and the other is a root canal preparation dental handpiece 200. The rinsing dental handpiece 100 is provided with a second connecting component.

[0125] The dental handpiece for root canal preparation 200 is equipped with a third connecting component, and the second connecting component and the third connecting component have the same structure.

[0126] The second and third connecting components are independently and detachably connected to the first connecting component 310.

[0127] In this embodiment, since the second and third connecting components have the same structure and are independently and detachably connected to the first connecting component 310, both the root canal preparation dental handpiece 200 and the rinsing dental handpiece 100 can be detachably connected to the main body 300. During the operation, after using the root canal preparation dental handpiece 200, the user can directly disassemble it and then insert the rinsing dental handpiece 100 into the main body 300 to start the rinsing work directly, without having to switch the entire surgical equipment (from the root canal preparation machine to the rinsing machine) or readjust the operating settings of the surgical equipment, thereby effectively improving surgical efficiency. At the same time, it can also avoid repeatedly disinfecting the entire machine (only the rinsing dental handpiece 100 and the root canal preparation dental handpiece 200 need to be disinfected). That is, while disinfecting the root canal preparation dental handpiece 200, the rinsing dental handpiece 100 can be used for operation, thereby achieving the effect of alternating operation, which can effectively improve surgical efficiency and reduce disinfection consumables.

[0128] Furthermore, in existing technologies, root canal machines and sonic scalpels require different types of charging sockets and other supporting equipment, resulting in high maintenance costs. Additionally, both root canal preparation machines and sonic scalpels require protective film wrapping, leading to high production costs. Moreover, due to cost considerations, dentists currently only equip themselves with one root canal preparation machine and one scalpel, requiring one to be sterilized before switching between them, which is time-consuming and inefficient.

[0129] In this embodiment, the rinsing dental handpiece 100 and the root canal preparation dental handpiece 200 share a first connecting component 310 via a second connecting component and a third connecting component. This saves at least one set of charging sockets and other supporting equipment, as well as a protective film, effectively reducing surgical consumables, costs, and production costs. Furthermore, this application allows for the use of multiple root canal preparation dental handpieces and multiple rinsing dental handpieces. For example, after root canal preparation, if one root canal preparation dental handpiece 200 has already been sterilized, and another rinsing dental handpiece 100 is used next, it can be removed and replaced with a third clean root canal preparation dental handpiece 200 for seamless switching. Similarly, the rinsing dental handpiece 100 can be used in the same way, improving surgical efficiency.

[0130] It should be understood that the main body 300 can be the main body 300 of the root canal preparation machine (excluding the root canal preparation dental handpiece 200).

[0131] Further, please refer to Figures 11 to 12 The second connecting component includes a third adapter 110 and a first drive shaft assembly. The first drive shaft assembly is located inside the third adapter 110. The main body 300 is provided with a insertion hole 311. A drive shaft 340 is provided inside the insertion hole 311. The third adapter 110 is sleeved on the drive shaft 340 and inserted into the insertion hole 311. The drive shaft 340 is used to drive the first drive shaft assembly to move.

[0132] In this embodiment, after the third adapter 110 is inserted into the insertion hole 311 and sleeved on the drive shaft 340, it can achieve a certain degree of fixation with the insertion hole 311, thereby preventing shaking between the rinsing dental handpiece 100 and the main body 300, which would affect the surgical accuracy. The drive shaft 340 can be used to drive the drive assembly located inside the rinsing dental handpiece 100 or the root canal preparation dental handpiece 200, thereby activating the rinsing dental handpiece 100 and the root canal preparation dental handpiece 200. It should be understood that the first drive shaft assembly may include a first gear, a second gear, a moving element, and an eccentric shaft.

[0133] Further, please refer to Figures 11 to 12 The second connecting component also includes a plurality of first positioning pins 120, which are arranged along the axial direction of the third adapter 110. The main body 300 is provided with a plurality of positioning holes 312, and the first positioning pins 120 are inserted into the positioning holes 312 and are interference-fitted with the positioning holes 312.

[0134] In this embodiment, since the first positioning pins 120 are arranged along the axial direction of the third adapter 110, when the first positioning pins 120 are inserted into the positioning socket 312, they can prevent the dental handpiece 100 from rotating around the axis of the third adapter 110, thereby playing a positioning role; at the same time, since the first positioning pins 120 and the positioning socket 312 are interference-fitted, they can prevent the dental handpiece 100 from falling off the main body 300, thereby improving the stability of the dental medical device.

[0135] Further, please refer to Figure 11 and Figure 12 The third adapter 110 has a chamfered opening. The outer wall of the third adapter 110 near the chamfer has a first annular groove 111. The insertion hole 311 has an elastic annular protrusion (not shown in the figure) that abuts against the first annular groove 111.

[0136] In this embodiment, the chamfer prevents the end of the third adapter 110 with the tube opening from being inserted into the elastic annular protrusion. This causes the annular elastic protrusion to first deform and expand, allowing the tube opening of the third adapter 110 to pass through, and then to return to its original shape, engaging with the first annular groove 111 in a snap-fit ​​manner. At this time, the cooperation between the first annular protrusion and the elastic annular protrusion can further prevent the dental handpiece 100 from falling off the main body 300, allowing the dental handpiece 100 to be removed by direct insertion and removal.

[0137] Further, please refer to Figure 11 and Figure 12 The dental handpiece 100 is provided with a first working tip 130 at one end away from the second connecting component. One end of the first drive shaft assembly is connected to the drive shaft 340, and the other end is connected to the first working tip 130. The main body 300 is also provided with a brushless motor 320, which is used to drive the drive shaft 340 to drive the first working tip 130.

[0138] In the existing technology, the washing machine for sonic oscillation uses a brushed motor inside. Brushed motors have poor control, high noise, and short lifespan.

[0139] In this embodiment, firstly, the brushless motor 320 features stable output, low noise, and the ability to achieve fine output adjustment. Therefore, the main body 300 drives the first working tip 130 through the brushless motor 320, enabling stable, low-noise, and fine rinsing operations, and extending the service life of the rinsing dental handpiece 100 and the main body 300. Secondly, the frequency and torque of the brushless motor 320 can be precisely controlled, achieving multi-range adjustment of frequency and torque to adapt to different surgical environment requirements.

[0140] Further, please refer to Figures 11 to 12The dental handpiece 100 is also equipped with a speed-increasing gear set, which is used to proportionally increase the rotational speed of the drive shaft 340 to the first transmission shaft set.

[0141] In this embodiment, the maximum frequency of the brushed motor in a typical sonic oscillator is only between 200Hz and 300Hz, and the output torque is fixed, with only 2 to 3 output levels. Therefore, it cannot change the torque to adapt to different surgical environments. However, the dental handpiece 100 in this embodiment is equipped with a speed-increasing gear set, which can effectively expand the working frequency of the drive shaft 340, thereby increasing the working frequency of the dental handpiece 100 beyond the maximum frequency range of existing sonic oscillators.

[0142] Furthermore, the speed of the brushless motor 320 is 3500 r / min to 18000 r / min.

[0143] In this embodiment, when the speed of the brushless motor 320 is between 3500 r / min and 18000 r / min, the output shaft speed after passing through the speed-increasing gear set is the motor speed multiplied by the speed-increasing factor. For example, when the speed-increasing gear set can increase the speed by 2.5 times, the speed of the first transmission shaft group is 18000 × 2.5 = 45000 r / min. The relationship between the frequency unit Hertz (Hz) and the speed (r / min) is: 1 Hz represents one revolution per second, and 1 r / min = 1 / 60 r / s. Therefore, the output shaft speed of 45000 r / min is converted to a frequency of 45000 / 60 = 750 Hz. Thus, the brushless motor 320 of this application can cooperate with the speed-increasing gear set to increase the frequency of the dental handpiece washing to a maximum of 750 Hz, thereby broadening its applicability.

[0144] Further, please refer to Figure 11 and Figure 12 The main body 300 also contains a circuit assembly 330, which is connected to the brushless motor 320 and is used to control the switching frequency and output torque of the brushless motor 320.

[0145] In this embodiment, the circuit component 330 can control the brushless motor 320 to switch its own frequency and output torque. Since the brushless motor 320 has high output accuracy and strong stability, it can control the frequency and output torque of the brushless motor 320 to be adjusted within a smaller range compared to the output frequency and output torque of the brushed motor, so as to adapt to the high-precision operation.

[0146] Further, please refer to Figure 11 and Figure 12 There is an interference fit between the third adapter 110 and the plug hole 311.

[0147] In this embodiment, when the third adapter 110 and the insertion hole 311 are interference-fitted, it can effectively prevent the dental handpiece 100 from falling off the main body 300, thereby improving the stability of the dental medical device.

[0148] Furthermore, the endodontic handpiece also includes a second drive shaft assembly (not shown in the figure), a second working tip 230, a second sleeve 210, a second positioning pin 220, and a second annular groove 211. The second drive shaft assembly, the second sleeve 210, the second positioning pin 220, and the second annular groove 211 have the same structure as the first drive shaft assembly, the third adapter 110, the first positioning pin 120, and the first annular groove 111, respectively. The second working tip 230 is used for cutting during root canal preparation.

[0149] Please refer to Figures 11 to 13 In the diagram, the X direction represents the left-right direction, and the Z direction represents the up-down direction. The rinsing dental handpiece also includes a first working tip 130, with connecting portions 131 and working portions 132 at both ends; the rinsing dental handpiece also includes:

[0150] Eccentric shaft 150, the axial length direction of eccentric shaft 150 intersects the length direction of the first working tip;

[0151] The moving ornament 160 is eccentrically connected at one end to the eccentric shaft 150 along the axial length direction of the eccentric shaft 150, and the other end is connected to the connecting part 131. The eccentric shaft 150 is used to drive the moving ornament 160 to eccentrically swing, so as to drive the end of the working part 132 to perform elliptical or circular motion.

[0152] The outer shell 140 has a receiving cavity (not marked in the figure). The moving part 160, the eccentric shaft 150 and the connecting part 131 are all located in the receiving cavity. The end of the moving part 160 away from the eccentric shaft 150 abuts against the inner wall of the outer shell 140.

[0153] The end of the eccentric shaft 150 away from the moving ornament 160 is connected to the second gear, which is used to drive the eccentric shaft 150 to rotate.

[0154] In this embodiment, the eccentric shaft 150 is capable of rotating about its own axis. When the eccentric shaft 150 rotates, it can drive the moving pendulum 160 to eccentrically oscillate. This eccentric oscillation should be understood as: the end of the moving pendulum 160 closest to the eccentric shaft 150... Figure 11The A-line in the movement moves in an elliptical or circular motion (the plane containing the A-line can be perpendicular to the axis of the eccentric shaft 150). At this time, because the end of the moving component 160 away from the eccentric shaft 150 abuts against the inner wall of the outer casing 140, this end will not move along the A-line, causing the overall range of motion of the moving component 160 to form a cone-shaped structure. Furthermore, because the length direction of the first working tip 130 intersects the length direction of the eccentric shaft 150 and is connected to the end of the moving component 160 away from the eccentric shaft 150, when the eccentric component moves in an elliptical or circular motion along the A-line, under the driving force of the end of the moving component 160 away from the eccentric shaft 150, the end of the working part 132 of the first working tip 130 will move in an elliptical or circular motion along the B-line (the straight line between the working part 132 of the first working tip 130 and the connecting part 131 can be perpendicular to the plane containing the B-line).

[0155] Specifically, when the end of the moving component 160 near the eccentric shaft 150 moves along line A to a position near the upper part of the receiving cavity, the end of the working part 132 can move along line B to a position near the left end. When the end of the moving component 160 near the eccentric shaft 150 moves along line A to a position near the lower part of the receiving cavity, the end of the working part 132 can move along line B to a position near the right end. It should be understood that the eccentric shaft can be controlled and driven by a speed-increasing gear set.

[0156] In summary, the first working tip 130 of this utility model embodiment can perform elliptical or circular motion on a plane intersecting with its own length direction. Therefore, when operating a device containing the first working tip 130, the user can directly control the first working tip 130 to clean the residue on the inner wall of the root canal, thereby improving surgical efficiency.

[0157] Further, please refer to Figure 13 An eccentric groove (not marked in the figure) is provided at one end of the eccentric shaft 150 facing the moving ornament 160. There is a distance between the center line of the eccentric groove and the axis of the eccentric shaft 150. The end of the moving ornament 160 near the eccentric shaft 150 abuts against the eccentric groove.

[0158] In this embodiment, since there is a distance between the center line of the eccentric groove and the axis of the eccentric shaft 150, and the end of the moving pendulum 160 near the eccentric shaft 150 abuts against the eccentric groove, after the eccentric shaft 150 rotates along its own axis, it will drive the end of the moving pendulum 160 near the eccentric shaft 150 to make elliptical or circular motion along line A in the figure.

[0159] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

[0160] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

[0161] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, combinations, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A dental handpiece identification device for connecting a dental handpiece, characterized in that The dental handpiece recognition device includes: The main body is used to drive the dental handpiece. The main body is provided with a first conductive part, a second conductive part, and a control component. The first conductive part and the second conductive part are independently and electrically connected to the control component. When the main body is connected to the dental handpiece, both the first conductive part and the second conductive part are electrically connected to the dental handpiece and form a current loop connected to the control component; or, when the main body is connected to the dental handpiece, one of the first conductive part and the second conductive part is electrically isolated from the dental handpiece, and the other is electrically connected to the dental handpiece. The control component is configured to detect the impedance between the first conductive part and the second conductive part, and to identify the type of dental handpiece connected to the body based on the value of the impedance. A prompting component is configured to issue a prompting signal based on the type of dental handpiece identified by the control component, to indicate the type of dental handpiece connected to the body.

2. The dental handpiece identification device of claim 1, wherein, The main body includes a motor flange adapter, an insulating sleeve, and a conductive component. The first conductive part is disposed on the conductive component, and the second conductive part is disposed on the motor flange adapter. The main body also includes a motor assembly for driving the dental handpiece. The motor flange adapter is fitted onto the motor assembly, and the insulating sleeve is placed between the conductive part and the motor flange adapter.

3. The dental handpiece recognition device according to claim 2, characterized in that: The motor assembly includes a motor, a motor flange, a motor shaft, and a motor connector. The dental handpiece includes a connector. The motor flange is fitted onto the motor. The motor shaft passes through the motor connector. The motor connector is connected to the connector. The motor drives the motor shaft so that the motor shaft drives the motor connector, thereby causing the connector to move.

4. The dental handpiece identification device of claim 3, wherein, The motor flange is an insulating component and is disposed between the motor and the motor flange adapter to electrically isolate the motor and the motor flange adapter.

5. The dental handpiece identification apparatus of claim 2, wherein, The outer wall of the motor flange adapter is provided with a first boss, and the insulating sleeve abuts against the side of the first boss away from the motor assembly; and / or, The insulating sleeve is fitted onto the outer wall of the motor flange adapter; and / or, The conductive element is sleeved on the outer wall of the insulating sleeve; and / or, The outer wall of the insulating sleeve is provided with a second protrusion, and the conductive element abuts against the side of the second protrusion away from the motor assembly.

6. The dental handpiece identification apparatus of claim 1, wherein, The notification component includes at least one of a display screen, a speaker, a light fixture, and a vibration component; and / or, The control component stores multiple preset impedances and parameter information corresponding to each preset impedance. When the main body is connected to the dental handpiece, the control component compares the detected impedance with each of the multiple preset impedances and determines the parameter information corresponding to the impedance. The prompting component receives the parameter information corresponding to the impedance and issues a corresponding prompt signal based on the parameter information; and / or, The dental handpiece recognition device further includes an operating element configured to control the operating mode and operating efficiency of the dental handpiece; and / or, The control component includes a control element and a differential amplifier circuit. One end of the differential amplifier circuit is electrically connected to the first conductive part and the other end is electrically connected to the control element for amplifying current signals. The control element is configured to detect the impedance between the first conductive part and the second conductive part, and to identify the type of dental handpiece connected to the main body based on the impedance value. The prompting component is electrically connected to the control element.

7. A dental medical instrument, characterized by The dental medical device includes: A first dental handpiece, the first dental handpiece being provided with a first abutting part and a second abutting part; The handle includes the dental handpiece recognition device according to any one of claims 1 to 6, the handle is connected to the first dental handpiece, the first abutting part abuts against the first conductive part, the second abutting part abuts against the second conductive part, and a current loop is formed between the first conductive part, the first abutting part, the second conductive part, the second abutting part and the control component.

8. A dental medical instrument, characterized by The dental medical device includes: A second dental handpiece, the second dental handpiece being provided with a third abutment; The handle includes the dental handpiece recognition device according to any one of claims 1 to 6, the handle is connected to the second dental handpiece, the second conductive part abuts against the third abutting part, and the first conductive part is electrically isolated from the second dental handpiece.

9. A dental medical instrument, characterized by The dental medical device includes: A third dental handpiece, wherein the third dental handpiece is provided with a fourth abutment part; The handle includes the dental handpiece recognition device according to any one of claims 1 to 6, the handle is connected to the third dental handpiece, the fourth abutment portion abuts against the first conductive portion, and the second conductive portion is electrically isolated from the third dental handpiece.

10. A dental medical system, characterized by The dental medical system includes: First dental handpiece; Second dental handpiece; A handle, the handle including the dental handpiece recognition device according to any one of claims 1 to 6, and connected to the first dental handpiece or the second dental handpiece, for driving the first dental handpiece or the second dental handpiece to operate; When the main body is connected to the first dental handpiece, both the first conductive part and the second conductive part are electrically connected to the first dental handpiece. When the main body is connected to the second dental handpiece, one of the first conductive part and the second conductive part is electrically isolated from the second dental handpiece, and the other is electrically connected to the second dental handpiece. The control component is configured to detect the impedance between the first conductive part and the second conductive part, and determine the type of dental handpiece connected to the handle based on the impedance. A prompting component configured to emit a prompting signal to indicate the type of dental handpiece connected to the handle.

11. The dental medical system according to claim 10, characterized in that, One end of the main body is provided with a first connecting component. Of the first dental handpiece and the second dental handpiece, one is a rinsing dental handpiece and the other is a root canal preparation dental handpiece. The rinsing dental handpiece is provided with a second connecting component, and the root canal preparation dental handpiece is provided with a third connecting component. The second connecting component and the third connecting component have the same structure. The second connecting component and the third connecting component are independently and detachably connected to the first connecting component.

12. The dental medical system according to claim 11, characterized in that, The second connecting component includes a third adapter and a first drive shaft assembly. The first drive shaft assembly is located inside the third adapter. The main body is provided with a plug hole, and a drive shaft is provided inside the plug hole. The third adapter is sleeved on the drive shaft and plugged into the plug hole. The drive shaft is used to drive the first drive shaft assembly to move.

13. The dental medical system according to claim 12, characterized in that, The second connecting component further includes a plurality of first positioning pins, which are arranged along the axial direction of the third adapter. The main body is provided with a plurality of positioning holes, and the first positioning pins are inserted into the positioning holes and are interference-fitted with the positioning holes.

14. The dental medical system according to claim 13, characterized in that, The third adapter has a chamfered opening, and a first annular groove is provided on the outer wall of the third adapter near the chamfer. An elastic annular protrusion is provided inside the insertion hole, and the elastic annular protrusion abuts against the first annular groove; and / or, The dental handpiece is provided with a first working tip at the end away from the second connecting assembly. One end of the first drive shaft assembly is connected to the drive shaft, and the other end is connected to the first working tip. A brushless motor is also provided inside the main body, which drives the drive shaft to move the first working tip; and / or, The dental handpiece also includes a speed-increasing gear set, which is used to proportionally increase the rotational speed of the drive shaft to that of the first transmission shaft set; and / or, The main body contains a circuit assembly for controlling the switching frequency and output torque of the brushless motor; and / or, The speed of the brushless motor is 3500 r / min to 18000 r / min.

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