Quick plugging and pulling mechanism for tail wire of dental handpiece

Abstract

The utility model discloses a dental handpiece tail wire quick-plugging and quick-pulling mechanism which comprises a tail wire assembly and a dental handpiece assembly, the tail wire assembly comprises a tail wire shell, and a tail plug is arranged in the tail wire shell; the dental handpiece assembly is provided with a motor base and a clamping base, the motor base is provided with a pair of protrusions, the clamping base is arranged on the motor base, clamping grooves corresponding to the protrusions are formed in the clamping base, and the clamping base is connected with the handpiece shell; a guide slope is arranged at the upper end of the bulge and is upwards inclined towards one side of the mobile phone shell; the upper end of the bulge is exposed above the clamping groove; a pair of clamping grooves are formed in the opening of the tail wire shell and are clamped with the upper ends of the bulges; and the clamping seat moves along the guide slope under the action of outward traction of the mobile phone shell, so that the bulge deforms, moves downwards and is separated from the clamping groove in the tail line shell. Through cooperation between the clamping seat and the motor seat, the tail line shell is separated from the groove by adjusting the position of the protrusion, rapid disassembly of the tail line assembly is achieved, and operation is easy.

Description

Technical Field

[0001] The utility model belongs to the field of dental surgical instruments, and relates to a connecting device between a dental low-voltage electric motor control box and a dental handpiece, in particular to a dental handpiece tail line quick-insertion and quick-extraction mechanism. Background Art

[0002] At present, the connection line (tail line) between the low-voltage electric motor control box and the dental handpiece is mostly connected by thread. The disadvantage of the thread connection method is that the doctor needs to align the position and then tighten the thread when operating, which takes a long time. When disassembling, the thread needs to be unscrewed, and if there is water on the doctor's gloves, it is easy to slip.

[0003] Therefore, it is necessary to improve the prior art to overcome the defects in the prior art. Utility Model Content

[0004] The utility model aims to provide a quick-insertion and quick-extraction mechanism for a dental handpiece tail line, so as to improve the convenience of installing and removing the dental handpiece tail line.

[0005] The purpose of the utility model is achieved through the following technical solutions:

[0006] A dental mobile phone tail wire quick-insertion and quick-extraction mechanism comprises a tail wire assembly and a dental mobile phone assembly, the tail wire assembly comprises a tail wire shell, a tail plug is arranged in the tail wire shell; the dental mobile phone assembly is provided with a motor seat and a clamping seat, the motor seat is provided with a pair of protrusions, the clamping seat is arranged on the motor seat and is provided with clamping grooves corresponding to the protrusions, and the clamping seat is connected to the mobile phone shell; the upper end of the protrusion is provided with a guide slope, and the guide slope is inclined upward toward one side of the mobile phone shell; the upper end of the protrusion is exposed above the clamping groove; a pair of clamping grooves are arranged at the opening of the tail wire shell, and the clamping grooves are clamped with the upper end of the protrusion; the clamping seat moves along the guide slope under the action of the mobile phone shell pulling outward, so that the protrusion is deformed and moved downward and disengaged from the clamping groove on the tail wire shell.

[0007] As a further improvement of an embodiment of the utility model, the motor seat has a hollow tube protruding outward in the center, and a notch is provided on one side of the hollow tube; the tail plug has a center hole for inserting the hollow tube, and a boss fitting with the notch is provided in the center hole.

[0008] As a further improvement of an embodiment of the utility model, a cooling air socket connected to the center hole is provided on the tail plug, and a water and air pipe socket and a pin crown spring seat are provided on the tail plug outside the cooling air socket; a water and air pipe channel connected to the water and air pipe socket is provided on the tail plug, and a pin channel connected to the pin crown spring seat is provided on the tail plug.

[0009] As a further improvement of an embodiment of the utility model, the motor seat has a bolt mounting column, the motor connecting plate is sleeved on the hollow tube, the cover plate is sleeved on the hollow tube and covers the upper end of the motor connecting plate, and the cover plate and the motor connecting plate are locked on the bolt mounting column by bolts; the motor seat is connected to the motor, and the motor wire of the motor is welded to the motor connecting plate.

[0010] As a further improvement of an embodiment of the utility model, a pin is provided on the motor connecting plate, a water and air pipe is provided on the dental mobile phone assembly, and one end of the water and air pipe passes through the motor connecting plate; when the notch on the hollow tube does not fit with the boss in the center hole, the pin and the water and air pipe are outside the tail plug; when the notch on the hollow tube fits with the boss in the center hole, the position of the pin corresponds to the pin channel on the tail plug, and the position of the water and air pipe corresponds to the water and air pipe channel on the tail plug.

[0011] As a further improvement of one embodiment of the utility model, the dental handpiece assembly has a cooling air pipe inserted into the center hole, a cooling air connector is provided on the cooling air socket, and a cooling air pipe sealing ring is provided between the cooling air socket and the cooling air connector; the cooling air pipe is inserted into the center hole and passes through the cooling air pipe sealing ring, and a seal is provided between the cooling air pipe and the cooling air pipe sealing ring.

[0012] As a further improvement of one embodiment of the utility model, a water-gas pipe joint is provided on the water-gas pipe socket, and a water-gas pipe sealing ring is provided between the water-gas pipe joint and the water-gas pipe socket; one end of the water-gas pipe is inserted into the water-gas pipe channel and passes through the water-gas pipe sealing ring, and a seal is provided between the water-gas pipe sealing ring and the water-gas pipe.

[0013] As a further improvement of an embodiment of the utility model, the motor seats on both sides of the protrusion are hollow structures.

[0014] As a further improvement of an embodiment of the utility model, the motor seat has a slope surface, the slope surface is inclined toward the inner side of the motor seat, and the upper edge of one end of the protrusion is fixedly connected to the slope surface.

[0015] As a further improvement of an embodiment of the utility model, the tail plug is fixed to the tail wire housing through a threaded pressing piece.

[0016] The above technical solution has the following beneficial effects: by cooperating between the card seat and the motor seat, the tail wire housing is disengaged from the slot by adjusting the position of the protrusion, so that the tail wire assembly can be quickly disassembled and easy to operate; the tail wire assembly can be quickly installed by the notch of the hollow tube on the motor seat and the boss in the center hole of the tail plug;

[0017] 1. It solves the problem of traditional threaded connection, which requires doctors to align the position and then tighten the thread, which takes a long time to operate;

[0018] 2. It solves the problem that when the traditional connection method is disassembled, if there is water on the doctor's gloves, it is easy to slip;

[0019] 3. Simple structure, easy to manufacture and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0022] Figure 1 The present invention is a three-dimensional structural schematic diagram.

[0023] Figure 2 This is a schematic diagram of the main structure provided by the utility model.

[0024] Figure 3 for Figure 2 Schematic cross-sectional view along the AA direction.

[0025] Figure 4 This is a schematic diagram of a partial three-dimensional structure provided by the utility model (with the tail wire housing hidden).

[0026] Figure 5 This is a schematic diagram of a partial three-dimensional structure provided by the utility model (hiding the tail line housing and the mobile phone housing).

[0027] Figure 6 This is a schematic diagram of the three-dimensional structure of the motor base provided by the utility model.

[0028] Figure 7 The utility model is provided with a cover plate and its surrounding structure.

[0029] Figure 8 This is a three-dimensional schematic diagram of the motor connecting plate and its surrounding structure provided by the utility model.

[0030] Fig. 9 This is a schematic diagram of the three-dimensional structure of the tail plug in the first state provided by the utility model.

[0031] Fig.10 This is a three-dimensional schematic diagram of the tail plug and its surrounding structure provided by the utility model.

[0032] Fig.11 for Fig.10 Schematic diagram of the top view structure.

[0033] Fig.12 for Fig.11 Schematic cross-sectional view along the BB direction.

[0034] Fig.13 This is a schematic diagram of the three-dimensional structure of the tail line housing provided by the utility model.

[0035] In the figure:

[0036] 1-tail wire housing; 101-card slot;

[0037] 2-Booth;

[0038] 3-motor seat; 31-hollow tube; 311-notch; 32-protrusion; 321-guide slope; 33-bolt mounting column; 34-slope surface;

[0039] 4-Mobile phone housing;

[0040] 5- Motor;

[0041] 6-tail plug; 61-center hole; 62-boss; 63-water and air pipe channel; 64-pin channel;

[0042] 7-pin;

[0043] 8-water and air pipe;

[0044] 9- Cooling air pipe;

[0045] 10-pin crown spring seat;

[0046] 11- Water and gas pipe socket;

[0047] 12- Cooling gas socket;

[0048] 13-Cooling air pipe sealing ring;

[0049] 14-water and gas pipe sealing ring;

[0050] 15-threaded pressing piece;

[0051] 16-motor connection plate;

[0052] 17-cover plate;

[0053] 18-Cooling gas connector;

[0054] 19-Water and gas pipe connector. DETAILED DESCRIPTION

[0055] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0056] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0057] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention. Example

[0058] See also Figure 1-Figure 3 As shown, a dental handpiece tail wire quick-insertion and quick-extraction mechanism comprises a tail wire assembly and a dental handpiece assembly. The tail wire assembly can be quickly installed into the dental handpiece assembly; when disassembling, the tail wire assembly can also be quickly removed from the dental handpiece assembly, and the operation is convenient and quick.

[0059] Specifically, the tail wire assembly includes a tail wire housing 1, a tail plug 6 is arranged in the tail wire housing 1, the front of the tail plug 6 faces one side of the tail wire housing 1, and the tail plug 6 is fixed to the tail wire housing 1 through a threaded pressing piece 15. Among them, a center hole 61 is centrally arranged on the back of the tail plug 6, and a boss 62 is arranged in the center hole 61; a water and air pipe channel 63 and a pin channel 64 are arranged on the tail plug around the periphery of the center hole 61, and the number of the water and air pipe channels 63 is two, and the number of the pin channels 64 is five.

[0060] The front of the tail plug 6 is provided with a water and gas pipe socket 11, a pin crown spring seat 10 and a cooling gas socket 12. The number of the water and gas pipe sockets 11 is consistent with the number of the water and gas pipe channels 63, and the number of the pin crown spring seats 10 is consistent with the number of the pin channels 64.

[0061] The cooling gas socket 12 corresponds to the center hole 61. When the cooling gas pipe 9 is inserted into the center hole 61, the cooling gas flows along the center hole 61 and is discharged from the cooling gas socket 12. The cooling gas socket 12 is provided with a cooling gas connector 18, and a cooling gas pipe sealing ring 13 is provided between the cooling gas socket 12 and the cooling gas connector 18. When the tail line assembly is assembled, the cooling gas pipe 9 is inserted into the center hole 61 and passes through the cooling gas pipe sealing ring 13. The cooling gas pipe 9 and the cooling gas pipe sealing ring 13 are sealed so that the cooling gas can only be ejected from the cooling gas connector 18.

[0062] A water-gas pipe joint 19 is provided on the water-gas pipe socket 11, and a water-gas pipe sealing ring 14 is provided between the water-gas pipe joint 19 and the water-gas pipe socket 11. One end of the water-gas pipe 8 is inserted into the water-gas pipe passage 63 and passes through the water-gas pipe sealing ring 14, wherein the water-gas pipe sealing ring 14 and the water-gas pipe 8 are sealed, so that the water vapor in the water-gas pipe 8 can only be sprayed out from the water-gas pipe joint 19.

[0063] The dental handpiece assembly includes a motor base 3, one side of which is connected to a motor 5, and the other side of which has a hollow tube 31 protruding outward, and one side of which is provided with a notch 311; the motor base 3 has a pair of protrusions 32, and the pair of protrusions 32 are distributed on both sides of the motor base. A clamping base 2 is provided on the motor base 3, and a clamping groove corresponding to the protrusion 32 is provided on the clamping base 2. The clamping base 2 is connected to the mobile phone housing 4 through a thread until it is screwed to the stop surface on the mobile phone housing.

[0064] In this embodiment, the upper end of the protrusion 32 has a guide slope 321, and the guide slope 321 is inclined upward toward one side of the mobile phone housing 4. When the card holder 2 is installed on the motor holder 3 in place, the upper end of the protrusion 32 is exposed above the card slot.

[0065] A pair of slots 101 are provided at the opening of the tail wire housing 1, and the slots 101 correspond to the positions of the protrusions 32. When the position of the tail wire housing 1 is adjusted to the right position, the slots 101 are engaged with the protrusions exposed above the holder 2, so that the tail wire housing 1 is fixed on the dental handpiece assembly.

[0066] When the tail wire housing 1 needs to be removed from the dental mobile phone assembly, it is only necessary to pull the mobile phone housing 4 outward with force, so that the holder 2 moves along the guide slope 321 under the action of the mobile phone housing pulling outward, so that the protrusion 32 is deformed and moves downward and disengaged from the slot 101 on the tail wire housing, and the tail wire housing 1 is removed from the dental mobile phone assembly.

[0067] Preferably, the motor base 3 on both sides of the protrusion 32 is a hollow structure to reduce the resistance when the protrusion 32 is pressed downward and deformed.

[0068] Furthermore, the motor seat 3 has a slope surface 34 , which is inclined toward the inner side of the motor seat, and the upper edge of one end of the protrusion 32 is fixedly connected to the slope surface 34 .

[0069] Through the above structural design, both the front and rear ends of the protrusion 32 are supported, the protrusion 32 can quickly return to its original state after being pressed down, and the protrusion will not lose its elasticity during long-term use, thereby improving the durability of the protrusion 32.

[0070] In this embodiment, the motor base 3 located outside the hollow tube 31 has a pair of bolt mounting columns 33, the motor connecting plate 16 is sleeved on the hollow tube 31, and the cover plate 17 is sleeved on the hollow tube 31, wherein the cover plate 17 is located outside the motor connecting plate 16, so that the cover plate 17 covers the upper end of the motor connecting plate 16. The cover plate 17 and the motor connecting plate 16 are locked on the bolt mounting columns 3 by bolts.

[0071] The motor connecting board 16 in this embodiment is a PCBA board, and the motor wires of the motor 5 are welded on the motor connecting board 16 (the motor 5 is controlled by the main control board, and the motor connecting board 16 here is an adapter board). The motor connecting board 16 is provided with plug pins 7, and the number of the plug pins 7 is five, which correspond to the plug pin channels 64 respectively. When the tail wire assembly is installed on the dental handpiece assembly, the five plug pins 7 on the motor connecting board 16 can be inserted into the plug pin channels 64 on the tail plug 6.

[0072] The dental handpiece assembly is provided with two water and air pipes 8, one end of which passes through the motor connecting plate 16. When the tail wire assembly is installed on the dental handpiece assembly, the two water and air pipes 8 can be inserted into the water and air pipe channel 63 on the tail plug 6.

[0073] In this embodiment, the tail wire assembly can be quickly blind-inserted into the dental handpiece assembly. Specifically, a boss 62 is provided in the center hole 61 to fit with a notch 311 provided on one side of the hollow tube 31, and the hollow tube 31 can be inserted into the center hole 61. When the notch 311 on the hollow tube 31 does not fit with the boss 62 in the center hole 61, the insertion pin 7 and the water and air pipe 8 are outside the tail plug 6. In this state, no part of the tail wire assembly is in contact with the insertion pin 7 and the water and air pipe 8.

[0074] When the notch 311 on the hollow tube 31 fits with the boss 62 in the center hole 61, rough positioning is achieved. The pin 7 and the water and air pipe 8 are inserted into the corresponding pin channel 64 and the water and air pipe channel 63 to achieve precise positioning, so that the tail wire assembly and the dental handpiece assembly are fully matched, and at the same time, the protrusion on the dental handpiece assembly is snapped onto the tail wire housing 1 of the tail wire assembly to complete the assembly of the tail wire assembly and the dental handpiece assembly.

[0075] Working principle: The quick blind plugging and quick pulling mechanism of the mobile phone tail line is used to connect the dental low-voltage electric motor with the dental chair, and provides water, gas, electricity and signals to the low-voltage electric motor. It realizes quick blind plugging and quick pulling of the mobile phone tail line.

[0076] The specific operations are as follows:

[0077] 1. After the motor 5 and other structural parts are installed, they are installed with the motor base 3. The water and air pipe 8 is installed on the side of the motor 5 and passes through the motor base 3. There are threads on the mobile phone shell 4. The motor base 3 is inserted into the card base 2, and the two protrusions on the motor base 3 are carded into the two card slots on the card base.

[0078] 2. The card holder 2 is connected to the mobile phone housing 4 through a thread and screwed to the stop surface on the mobile phone housing. The pin 6 is welded to the motor connection board (PCBA) 16, the water and air pipe 8 passes through the motor connection board 16, and the motor wire is welded to the motor connection board 16, the cover plate 17 is installed on the motor connection board 16, and the motor connection board 16 and the cover plate 17 are fixed to the motor seat 3 by screws.

[0079] 3. The tail plug 6 is equipped with a pin crown spring seat 10 (5 in total), a water and air pipe socket 11 (2 in total), and a cooling air socket 12. A cooling air pipe sealing ring 13 is installed in the cooling air socket 12, and a water and air pipe sealing ring 14 is installed in the water and air pipe socket 11. Install the assembled tail plug 6 in the tail wire housing 1, and fix the tail plug 6 in the tail wire housing 1 with a threaded pressing piece 15.

[0080] 4. Align the dental handpiece assembly with the tail wire assembly and rotate it at most one circle so that the notch 311 on the motor base 3 is completely aligned with the boss 62 in the middle of the tail plug 6 to achieve rough positioning, and the pin 7 and the water and air pipe 8 are precisely positioned so that the dental handpiece assembly and the tail wire assembly are fully matched. At the same time, the two protrusions on the motor base 3 are completely stuck in the two slots 101 of the tail wire housing 1 to complete the installation of the tail wire.

[0081] 5. The mobile phone housing 4 and the holder 2 are assembled into an assembly through threads. The assembly is pulled toward the dental mobile phone assembly. The two raised guide ramps 321 on the motor seat 3 are squeezed by the holder 2 and deformed inward. The protrusions are completely separated from the tail wire housing 1, and the tail wire can be easily removed.

[0082] When in use, the doctor only needs to align the dental handpiece assembly with the tail wire assembly, without aligning the foolproof slot. The tail wire assembly can be quickly installed on the dental handpiece assembly by turning it once at most, realizing fast blind insertion. When disassembling, just pull the handpiece shell hard to remove the tail wire assembly. This structure can realize fast installation and quick disassembly of the motor handpiece part.

[0083] The utility model solves the problem that in the traditional threaded connection method, the doctor needs to align the position and then tighten the thread, which takes a long time to operate; it also solves the problem that when the traditional connection method is disassembled, if there is water on the doctor's gloves, they are easy to slip; it has the characteristics of simple structure, easy manufacturing and low cost.

[0084] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0085] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0086] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0087] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A dental handpiece tail line quick plug-in and quick pull-out mechanism, comprising a tail line assembly and a dental handpiece assembly, characterized in that: The tail wire assembly includes a tail wire shell, in which a tail plug is arranged; the dental mobile phone assembly is provided with a motor seat and a clamping seat, the motor seat is provided with a pair of protrusions, the clamping seat is arranged on the motor seat and is provided with a clamping groove corresponding to the protrusion, and the clamping seat is connected to the mobile phone shell; the upper end of the protrusion is provided with a guide slope, and the guide slope is inclined upward toward one side of the mobile phone shell; the upper end of the protrusion is exposed above the clamping groove; a pair of clamping grooves are provided at the opening of the tail wire shell, and the clamping grooves are clamped with the upper end of the protrusion; the clamping seat moves along the guide slope under the action of the mobile phone shell being pulled outward, so that the protrusion is deformed and moved downward and disengaged from the clamping groove on the tail wire shell.

2. The dental handpiece tail line quick plug-in and quick pull-out mechanism according to claim 1, characterized in that: The motor seat has a hollow tube protruding outward in the center, and a notch is arranged on one side of the hollow tube; the tail plug has a central hole for the hollow tube to be inserted, and a boss is arranged in the central hole to fit with the notch.

3. The dental handpiece tail line quick plug-in and quick pull-out mechanism according to claim 2, characterized in that: The tail plug is provided with a cooling gas socket connected to the center hole, and the tail plug outside the cooling gas socket is provided with a water and gas pipe socket and a pin crown spring seat; the tail plug is provided with a water and gas pipe channel connected to the water and gas pipe socket, and the tail plug is provided with a pin channel connected to the pin crown spring seat.

4. The dental handpiece tail line quick plug-in and quick pull-out mechanism according to claim 3, characterized in that: The motor seat has a bolt mounting column, the motor connecting plate is sleeved on the hollow tube, the cover plate is sleeved on the hollow tube and covers the upper end of the motor connecting plate, and the cover plate and the motor connecting plate are locked on the bolt mounting column by bolts; the motor seat is connected to the motor, and the motor wire of the motor is welded to the motor connecting plate.

5. The dental handpiece tail line quick plug-in and quick pull-out mechanism according to claim 4, characterized in that: The motor connecting plate is provided with a pin, the dental handpiece assembly is provided with a water and air pipe, one end of the water and air pipe passes through the motor connecting plate; when the notch on the hollow tube does not fit with the boss in the center hole, the pin and the water and air pipe are outside the tail plug; when the notch on the hollow tube fits with the boss in the center hole, the position of the pin corresponds to the pin channel on the tail plug, and the position of the water and air pipe corresponds to the water and air pipe channel on the tail plug.

6. The dental handpiece tail line quick plug-in and quick pull-out mechanism according to claim 5, characterized in that: The dental handpiece assembly has a cooling air pipe inserted into the center hole, the cooling air socket is provided with a cooling air connector, and a cooling air pipe sealing ring is provided between the cooling air socket and the cooling air connector; the cooling air pipe is inserted into the center hole and passes through the cooling air pipe sealing ring, and a seal is provided between the cooling air pipe and the cooling air pipe sealing ring.

7. The dental handpiece tail line quick plug-in and quick pull-out mechanism according to claim 5, characterized in that: The water-gas pipe socket is provided with a water-gas pipe joint, and a water-gas pipe sealing ring is provided between the water-gas pipe joint and the water-gas pipe socket; one end of the water-gas pipe is inserted into the water-gas pipe channel and passes through the water-gas pipe sealing ring, and a sealing arrangement is provided between the water-gas pipe sealing ring and the water-gas pipe.

8. The dental handpiece tail line quick plug-in and quick pull-out mechanism according to claim 1, characterized in that: The motor seats on both sides of the protrusion are hollow structures.

9. The dental handpiece tail line quick plug-in and quick pull-out mechanism according to claim 8, characterized in that: The motor seat is provided with a slope surface, the slope surface is inclined toward the inner side of the motor seat, and the upper edge of one end of the protrusion is fixedly connected to the slope surface.

10. The dental handpiece tail line quick plug-in and quick pull-out mechanism according to claim 1, characterized in that: The tail plug is fixed on the tail wire housing through a threaded pressing piece.

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