CN112315600A

CN112315600A - Orthodontic bracket with changeable arch wire groove

Info

Publication number: CN112315600A
Application number: CN201910643559.9A
Authority: CN
Inventors: 张钦辉
Original assignee: Guangzhou OO Medical Scientific Ltd
Current assignee: Guangzhou OO Medical Scientific Ltd
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2021-02-05
Anticipated expiration: 2039-07-17
Also published as: CN112315600B

Abstract

The invention discloses an orthodontic bracket with a variable arch wire groove, which comprises a bracket main body and a cover body, wherein the bracket main body is provided with the arch wire groove and a limiting mechanism, the limiting mechanism is linked with the cover body, and when the cover body closes the arch wire groove, the limiting mechanism reduces the arch wire accommodating space of the arch wire groove; when the cover body is opened, the limiting mechanism restores the arch wire accommodating space of the arch wire groove. According to the orthodontic bracket, the limit mechanism is arranged, the cover body drives the limit mechanism to adjust the arch wire accommodating space of the arch wire groove, and when the cover body is closed, the limit mechanism reduces the arch wire accommodating space in the arch wire groove, reduces the clearance of the arch wire groove, ensures accurate expression of the torque of the arch wire, and enhances the orthodontic effect of the orthodontic bracket; when the cover body is opened, the arch wire groove restores the original size of the arch wire accommodating space, so that enough space is provided for putting in or taking out the arch wire.

Description

Orthodontic bracket with changeable arch wire groove

Technical Field

The invention relates to the field of orthodontic treatment equipment, in particular to an orthodontic bracket with a variable arch wire groove.

Background

Orthodontic brackets are commonly used in orthodontic treatment to move one or more teeth in a patient's dentition from an initial position to a desired position, while flexible archwire ligating brackets are commonly used for applying forces to the teeth toward the desired position for extended periods of time.

However, one problem commonly exists with existing orthodontic brackets: the size of the arch wire is generally smaller than that of the arch wire groove, so that the arch wire is designed to be easily placed into or taken out of the arch wire groove, otherwise, the arch wire with full size is difficult to enter/exit the groove; and the size of the arch wire is smaller than that of the arch wire groove, so that the clearance is inevitably left between the inner wall of the arch wire groove and the arch wire, the accurate expression of the preset data of the bracket is directly influenced, and the treatment course and the effect are influenced.

To address the technical problem, a number of patents or patent applications propose solutions.

The Chinese patent application CN201910135621.3 discloses an orthodontic time-sharing self-locking bracket, which is provided with an elastic pressure plate, and the elastic pressure plate is used for eliminating the gap between an arch wire and a bracket groove. However, in order to enable the elastic pressure plate to enter the second working state, the thick arch wire needs to extrude the elastic pressure plate and the inner wall of the arch wire groove, pressure and damage to teeth and the bracket are inevitable, and the elastic pressure plate in the second working state has elastic potential energy.

The Chinese patent application CN201810406247.1 of the applicant discloses a locking bracket and a using method thereof, which is provided with an adjusting mechanism and an adjusting plate, and the adjusting plate is driven by the adjusting mechanism to adjust the size of an arch wire groove. However, the patent application is to add structural components and correspondingly operation steps on the basis of the existing bracket: after the arch wire is installed and the cover body is closed, the purpose of adjusting the size of the arch wire groove can be achieved only by accurately screwing a fine adjusting mechanism by using a characteristic tool. Not only increases the difficulty of the operation, but also prolongs the operation time, and brings inconvenience to doctors and patients.

Furthermore, the chinese patent application 201810580106.1 discloses a novel orthodontic bracket, wherein a concave groove and a roller located in the concave groove are provided at the archwire slot, a spring plate is provided between the concave groove and the roller, the size of the archwire slot is smaller than that of a square wire in a normal state by the spring plate, and the spring plate is deformed by pressing the roller when the square wire is placed in the archwire slot, so that the square wire can be tightly placed in the archwire slot. This patent application requires that the square wire squeeze rollers enter the archwire slot, inevitably resulting in stress and damage to both the teeth and the bracket itself. Moreover, the arch wire is inconvenient to take out due to continuous pressure application of the elastic sheet. Namely, the patent application also has the technical problem that the arch wire is inconvenient to put in or take out. Moreover, the roller can only work effectively if the size of the arch wire is larger than the distance between the rollers (effective groove size), and the roller fails if the size of the arch wire is smaller than the distance (effective groove size).

Therefore, at present, no orthodontic bracket which reasonably solves the technical problems is available.

Disclosure of Invention

In view of the above technical problems, the present invention provides an orthodontic bracket with a changeable archwire slot, which can avoid the above mentioned technical problems.

The technical scheme adopted by the invention for solving the technical problem is as follows: an orthodontic bracket with a changeable arch wire groove comprises a bracket main body and a cover body, wherein the bracket main body is provided with the arch wire groove and a limiting mechanism, the limiting mechanism is linked with the cover body, and when the cover body closes the arch wire groove, the limiting mechanism reduces an arch wire accommodating space of the arch wire groove; when the cover body is opened, the limiting mechanism restores the arch wire accommodating space of the arch wire groove.

Compared with the prior art, the method has the following positive effects: according to the orthodontic bracket, the limit mechanism is arranged, the cover body drives the limit mechanism to adjust the arch wire accommodating space of the arch wire groove, when the cover body is closed, the limit mechanism reduces the arch wire accommodating space in the arch wire groove, the clearance of the arch wire groove is reduced, the torque accurate expression of the arch wire is ensured, the orthodontic bracket correcting effect is enhanced, when the cover body is opened, the arch wire groove restores the original size of the arch wire accommodating space, and therefore enough space is provided for putting in or taking out the arch wire;

1. compared with the prior art in which an elastic pressing plate or an adjusting mechanism is used, the arch wire accommodating space limiting device is provided with the linkage type limiting mechanism, the limiting mechanism moves along with the cover body when the cover body is opened and closed, additional operation of a doctor is not needed, on one hand, operation steps are simplified, operation time is shortened, and on the other hand, compared with qualitative adjustment like the elastic pressing plate, the arch wire accommodating space limiting amplitude of an arch wire groove can be accurately and quantitatively adjusted more accurately by setting motion parameters of the limiting mechanism in advance;

2. compared with the structure that the elastic sheet elastically narrows the arch wire groove in advance, the arch wire groove structure has the advantages that the two states are switched through the linkage of the cover body, when the arch wire groove is opened, the original enough arch wire accommodating space is restored by the arch wire groove, the arch wire is convenient to put in and take out, and the damage to the bracket and the damage to the tooth caused by the stress on the bracket and the tooth are avoided;

3. compared with other technical schemes that only the abutting structure is arranged on the inner side wall of the cover body, and the abutting structure correspondingly abuts against the arch wire when the cover body is closed, the arch wire accommodating space of the arch wire groove is reduced.

Further, the limiting mechanism comprises a driving member and an occupying member, and the occupying member is arranged in the arch wire groove; the cover body is in transmission connection with the driving component, the driving component is in transmission connection with the occupying component, and the driving component is linked with the opening and closing of the cover body to drive the occupying component to move towards the gingival jaw direction in the arch wire groove. The cover body is transmitted to the driving component, the driving component is transmitted to the occupying component, and the cover body pushes the occupying component to occupy the space in the arch wire groove through the driving component, so that the size of the arch wire accommodating space is limited. The setting of drive component effectively avoids the lid direct action to occupy the weight of the component and the atress that causes uneven, also effectively avoids occupying the counter force of component to the lid and makes the potential risk that the lid pine takes off.

Specifically, the driving member is embedded in the bracket body, and the driving member is connected with the inner side wall of the cover body or the pivoting part of the cover body. The embedded arrangement of drive component effectively reduces the edges and corners of orthodontic bracket, avoids causing the damage to the oral cavity of the user, and makes the appearance of the orthodontic bracket of the invention not different from that of the conventional bracket. And the driving member is linked by connecting the inner side wall of the cover body or the pivoting part of the cover body.

In particular, an elastic member is arranged in the limiting mechanism and/or the arch wire groove and used for elastically limiting the arch wire accommodating space of the arch wire groove. In consideration of the limitation of the archwire receiving space of the archwire slot, a resistance force of the archwire to the archwire slot, i.e., the limit mechanism, is generated, and thus the elastic member is provided to buffer the resistance force of the archwire.

Specifically, a sliding member is provided in the archwire slot for reducing friction between the archwire and the archwire slot. Considering that the arch wire accommodating space of the arch wire groove is limited, the friction between the arch wire and the arch wire groove is increased, so that the sliding component is arranged, the static friction is changed into the dynamic friction, and the damage to the arch wire and the bracket caused by the friction is reduced.

Further, the placeholder member is disposed on one side wall of the archwire slot, and the other side wall of the archwire slot is provided with the elastic member and/or the sliding member. The occupying component and the elastic piece clamp the arch wire together, and the acting force resisting of the arch wire is effectively buffered. The occupying component and the sliding component clamp the arch wire together, and the direct friction between the arch wire and the bracket is effectively reduced.

Specifically, one side of the occupying component corresponding to the arch wire is provided with a sliding component for reducing the friction between the arch wire and the limiting mechanism. The sliding component is arranged on the occupying component, and friction between the occupying component and the arch wire is reduced.

Furthermore, the inner side wall of the cover body is provided with a pressing piece, and the pressing piece corresponds to the arch wire groove. The pressing piece serves as a limiting mechanism with an auxiliary effect, limits an arch wire accommodating space of the arch wire groove, and further reduces the clearance of the arch wire groove. And the corresponding occupying component moves towards the gingival jaw direction in the arch wire groove, and the pressing part is limited in the labial-lingual direction corresponding to the arch wire, so that the occupying component is combined with the pressing part to limit the arch wire in the crossed direction of the two crosses, a very good limiting effect is achieved, the torque of the arch wire is further accurately expressed, and the orthodontic effect of the orthodontic bracket is enhanced.

In particular, the placeholder member is a push plate. The push plate is as long as the side wall of the archwire slot so that the space occupying member can comprehensively limit the archwire in the archwire slot.

Further, the cover body is a flip cover, a sliding cover or a screw cover; the cover body is in transmission connection with the driving component, so that the driving component moves in the gingival jaw direction; the occupying component is arranged on the side wall of the arch wire groove, and the driving component is in transmission connection with the occupying component, so that the occupying component moves in the gingival and jaw direction.

Specifically, the inner side wall of the flip cover is provided with a positioning scale and/or an axis inclination identification line; the outer side wall of the sliding cover or the screw cover is provided with a positioning scale and/or an axis inclination identification line. Compared with an external supporting groove positioner, the positioning ruler and the shaft inclination identification line are arranged on the cover body, so that the positioner is prevented from falling off. And will fix a position the staff gauge and the axis is inclined the marking line and set up in flip's inside wall, when using, conveniently watch, after using, the lid closes, even be the location staff gauge and the axis that bright coating was drawn incline the marking line, do not influence pleasing to the eye yet, even be location staff gauge and the axis that arch or recess were made incline the marking line, do not produce exposed pit line and remain food waste.

Specifically, the driving member comprises a bolt and a spring, the occupying member is a push plate, and an internal thread sleeve is arranged on the push plate; the pivot part of the flip cover is in transmission connection with the head of the bolt, the tail end of the bolt is in threaded connection with the internal thread sleeve of the push plate, one end of the spring elastically abuts against the push plate, and the other end of the spring abuts against the pivot part. Connect the drive component in the pivot portion of lid for when the lid is rotatory to be opened and shut, linkage drive component and then drive the occupy-place component and move in gum jaw direction, the direction of motion of pivot portion is different with the direction of motion of occupy-place component, thereby effectively avoids the reaction force of occupy-place component to cause the pine of lid to take off, avoids the lid to open under the state of correcting.

Furthermore, the middle part of the bolt is provided with a limit key which is propped against the pivot part by adjusting the connection depth of the bolt and the internal thread sleeve.

Specifically, the elastic member is a spring or a metal elastic sheet.

In particular, the sliding member is a roller or a ball or a track.

Specifically, the pressing member is a pressing block, a spring plate, a pressure spring or a bolt.

An orthodontic bracket with a changeable arch wire groove comprises a bracket main body and a cover body, wherein the bracket main body is provided with an arch wire groove and a limiting mechanism, and two sides of the arch wire groove are respectively provided with at least one limiting mechanism; the limiting mechanism is linked with the cover body, and when the cover body closes the arch wire groove, the limiting mechanism reduces the arch wire accommodating space of the arch wire groove; when the cover body is opened, the limiting mechanism restores the arch wire accommodating space of the arch wire groove.

Specifically, the cover body is a flip cover, a sliding cover or a screw cover; the placeholder member is disposed on a sidewall of the archwire slot.

The invention is further illustrated by the following figures and examples.

Drawings

Fig. 1 is a schematic structural view of embodiment 1 in which the lid body is opened.

Fig. 2 is a longitudinal sectional view of embodiment 1 in a state where the lid body is opened.

Fig. 3 is a schematic structural view of another view angle of embodiment 1 with the cover body opened.

Fig. 4 is a schematic structural view of embodiment 1 of closing the lid body.

Fig. 5 is a longitudinal sectional view of embodiment 1 in a state where the lid body is closed.

Fig. 6 is a schematic structural view of the cover.

Fig. 7 is a schematic structural view of embodiment 2 in which the lid body is opened.

Fig. 8 is a longitudinal sectional view of embodiment 2 in a state where the cover is opened.

Fig. 9 is a schematic structural view of embodiment 2 of closing the lid body.

Fig. 10 is a longitudinal sectional view of embodiment 2 in a state where the lid body is closed.

Fig. 11 is a schematic structural view of embodiment 3 in which the lid body is opened.

Fig. 12 is a longitudinal sectional view of embodiment 3 in a state where the cover is opened.

Fig. 13 is a schematic structural view of embodiment 3 of closing the lid body.

Fig. 14 is a longitudinal sectional view of embodiment 3 in a state where the lid body is closed.

Fig. 15 is a schematic structural view of the shaped column of example 3.

Fig. 16 is a front view of the shaped post of embodiment 3.

Fig. 17 is a schematic structural view of embodiment 4 in which the lid body is opened.

Fig. 18 is a longitudinal sectional view of embodiment 4 in a state where the cover is opened.

Fig. 19 is a schematic structural view of embodiment 4 in which the lid body is closed.

FIG. 20 is a longitudinal sectional view of embodiment 4 in a state where the lid body is closed.

Fig. 21 is a schematic structural view of embodiment 5 in which the lid body is opened.

FIG. 22 is a longitudinal sectional view of embodiment 5 in a state where the cover is opened.

FIG. 23 is a transverse sectional view of embodiment 5 in a state where the cover is opened.

Fig. 24 is a schematic structural view of embodiment 5 in which the lid body is closed.

FIG. 25 is a longitudinal sectional view of embodiment 5 in a state where the lid body is closed

FIG. 26 is a transverse sectional view of embodiment 5 in a state where the lid body is closed.

Fig. 27 is a schematic structural view of embodiment 6 in which the lid body is opened.

FIG. 28 is a longitudinal sectional view of example 6 in a state where the cover is opened.

Fig. 29 is a schematic structural view of embodiment 6 in which the lid body is closed.

FIG. 30 is a longitudinal sectional view of example 6 in a state where the lid body is closed.

Detailed Description

Unless otherwise indicated, in the following structural description, the orthodontic brackets will be described using a reference frame to the mandibular teeth. Thus, as used herein, terms such as labial, lingual, mesial, distal, occlusal, gingival used to describe orthodontic brackets are relative to a selected frame of reference. However, embodiments of the invention are not limited to the chosen frame of reference and the terms described, as orthodontic brackets may be used with other teeth and other orientations within the oral cavity. For example, orthodontic brackets may also be coupled to the lingual surfaces of the teeth and fall within the scope of the invention. Those skilled in the art will appreciate that when there are variations in the reference frame, the descriptive terms used herein may not be directly applicable. However, embodiments of the invention are intended to be independent of position and orientation within the oral cavity and the relative terms used to describe the embodiments are merely intended to provide an unambiguous explanation of the embodiments in the drawings. Likewise, the relative terms labial, lingual, mesial, distal, occlusal and gingival are in no way intended to limit the present invention to a particular position or orientation.

It should be noted that the relative terms labial, lingual, mesial, distal, occlusal and gingival are terms of art for orthodontic treatment. Taking the mandibular teeth as an example, the surface of the orthodontic bracket may be roughly divided into six planes. The face facing the lip is the labial side face of the orthodontic bracket, the face facing the tongue is the lingual side face of the orthodontic bracket, the labial side face is opposite to the lingual side face, and the direction formed by the labial side face and the lingual side face is also called the labial-lingual direction. The surface facing to the occlusal surface of the upper jaw teeth is the occlusal surface of the orthodontic bracket; the surface of the gingival tissue facing the tooth to which it is coupled is the gingival surface of the orthodontic bracket; the occlusal surface is opposite to the gingival surface, and the direction formed by the occlusal surface and the gingival surface is also called the gingival-jaw direction. Two surfaces facing adjacent teeth are respectively a mesial surface and a distal surface of the orthodontic bracket. The direction in which the mesial and distal planes are formed is also called the mesial-distal direction.

And in the description of directions, such as the labial and lingual directions, it is generally referred to as bi-directional. For example, the lip-tongue direction refers to a single direction, i.e., a direction from the labial side to the lingual side, as a distinction.

The arch wire groove refers to a groove for placing an arch wire on the orthodontic bracket, a cover body is arranged above the arch wire groove in general conditions, the surface of the arch wire groove corresponding to the inner side surface of the cover body is the bottom of the arch wire groove, and the inner side surfaces of two opposite arch wire grooves connected with the edge of the cover body are the side walls of the arch wire groove. Adjacent to the gingival side of the orthodontic bracket is the gingival side wall of the archwire slot and adjacent to the occlusal side of the orthodontic bracket is the occlusal side wall of the archwire slot.

The width of the archwire slot refers to the distance from one side wall to the other within the archwire slot.

The axis inclination marking line refers to an inclined line which is arranged on the orthodontic bracket and has the same angle with the bracket axis inclination angle, and is used for more accurate positioning when a doctor uses the bracket to be bonded to a tooth surface.

Furthermore, the components and spaces described below are also described with reference to the reference system of the mandibular teeth, such as the gingival side wall of a cavity, the occlusal surface of a component, etc., without limitation to the components and spaces.

Example 1

As shown in fig. 1 to 6, the archwire slot changeable orthodontic bracket of this embodiment 1 includes a bracket body 10, a flip 20 and a base plate 30. The base plate 30 is provided at the bottom of the bracket body 10 for bonding with the tooth surface.

Specifically, the bracket body 10 is provided with an archwire slot 13, a limit mechanism, and a sliding member, and the archwire slot 13 divides the bracket body 10 into two, including a first slot wing 11 protruding in the jaw-gingival direction and a second slot wing 12 protruding in the gingival-jaw direction.

Wherein, the middle part of the gum surface of the first slot wing 11 is recessed to form a receiving groove 113, and the receiving groove 113 receives the pivot part of the flip 20. The settling surface of the receiving tank 113 is the bottom surface 1132 of the receiving tank 113. The two ends of the receiving groove 113 in the proximal-distal direction are closed by the two ends of the first bracket wing 11, which are the two end side walls 1134 of the receiving groove 113. The second tray wing 12 is provided with a snap-fit location 121 that matches the flip 20.

The flip cover 20 is provided with a pivot portion and a snap portion 23. The pivot part of the flip 20 is movably disposed in the receiving groove 113, and the flip 20 rotates with the pivot part as a fulcrum to movably connect with the bracket body 10. The buckling part 23 of the flip cover 20 is matched with the buckling position 121 of the connecting bracket main body 10. The flip 20 is used to open and close the archwire slot 13.

The pivot portion of embodiment 1 includes two coaxial bushings 213 and a rotating pin 215, and an avoidance space of the stopper mechanism is left between the two bushings 213. The rotation pin 215 sequentially penetrates through the two bushings 213 of the flip 20, and two ends of the rotation pin 215 respectively abut against two side walls of the receiving groove 113. So that the folder 20 is rotated about the rotation pin 215. The two ends of the rotation pin 215 are not fixedly connected to the two end side walls 1134 of the receiving groove 113, but the rotation pin 215 moves in a limited manner in the receiving groove 113 by the limit action of the limit mechanism. The shaft of the rotating pin 215 corresponding to the avoidance space is provided with a pin hole 2150 for connecting the limiting mechanism.

The shaft sleeve 213 of the flip cover 20 is arranged in an involute structure, and the shaft hole of the shaft sleeve 213 is arranged at an eccentric point of the involute. When the lid 20 is fully opened, the portion of the sleeve 213 that contacts the bottom surface 1132 of the receiving groove 113 is the opening point 2135, the opening point 2135 is away from the axial center 2131 of the axial hole, and the distance between the opening point 2135 and the axial center 2131 is L2. When the lid 20 is completely closed, the portion of the sleeve 213 that contacts the bottom surface 1132 of the receiving groove 113 is a closing point 2137, the closing point 2137 is close to the axial center 2131 of the axial hole, and the distance between the closing point 2137 and the axial center 2131 is L1. Then, the moving limit of the rotation pin 215 is L2-L1 during the opening and closing of the lid 20 by the pushing force of the bottom surface 1132 of the receiving groove 113.

The limiting mechanism comprises a bolt 151, a push plate 153 and a spring 155. The push plate 153 is coupled with an internally threaded sleeve 157, and the push plate 153 is threadedly coupled with the bolt 151 through the internally threaded sleeve 157.

The first channel wing 11 defines a channel 115 for receiving the stop mechanism, and the channel 115 communicates the gingival side wall 136 of the archwire slot 13 with the bottom surface 1132 of the receiving slot 113. The bolt 151 of the stop mechanism is inserted through the pin hole 2150 of the rotation pin 215 and the through groove 115 in this order and then coupled to the internally threaded sleeve 157 of the push plate 153, and the plate surface of the push plate 153 is disposed on the gingival side wall 136 of the archwire slot 13. The head of the bolt 151 is clamped with the pin hole 2150, and the end of the bolt 151 is in threaded connection with the push plate 153. The spring 155 is sleeved on the bolt 151, one end of the spring 155 elastically abuts against the push plate 153, and the other end of the spring 155 elastically abuts against the rotation pin 215.

The working principle of the embodiment 1 is as follows:

in general, when the flip 20 is rotated to open or close the archwire slot 13, the flip 20 is linked with the limiting mechanism, wherein the bolt 151 and the spring 155 are driving members of the limiting mechanism and are disposed in the bracket body 10, and the push plate 153 is an occupying member and is disposed in the archwire slot 13. The driving member is in driving connection with the occupying member, so that the occupying member, i.e., the push plate 153, moves in the gingival-jaw direction in the archwire slot 13, and the push plate 153 reduces the moving space of the archwire by occupying part of the space in the archwire slot 13, i.e., limits the archwire accommodating space in the archwire slot 13. The present invention achieves the purpose of adjusting the archwire receiving space of the archwire slot 13.

Specifically, in the fully opened state of the lid 20, the opening point 2135 of the pivot portion of the lid 20 correspondingly contacts the bottom surface 1132 of the receiving groove 113 of the first slot wing 11, and the bushing 213 pulls the rotating pin 215 at an extreme position away from the bottom surface 1132 of the receiving groove 113. Then, the bolt 151 is moved by the rotating pin 215 to the extreme position of pulling out the through groove 115, and the push plate 153 is pulled by the bolt 151 to the extreme position close to the gingival surface of the archwire groove 13. This embodiment 1 sets the size of the bolt 151 at this time so that the push plate 153 fits just against the gingival of the archwire slot 13. Then, in the state where the folder 20 is fully opened, the archwire receiving space of the archwire slot 13 is maximized.

When the lid 20 moves from the fully open position to the fully closed position, the shaft sleeve 213 of the lid 20 rotates around the rotation pin 215 in the receiving groove 113, i.e., rotates in an involute trajectory, and the closing point 2137 of the shaft sleeve 213 gradually moves toward the bottom surface 1132 of the receiving groove 113. The force that pushes the lid 20 to close is applied to the pivot portion of the lid 20, which pushes the rotating pin 215 to move toward the bottom surface 1132 of the receiving groove 113, i.e., to move in the gingival-jaw direction, and the moving limit is L2-L1. In conjunction with the movement of the rotating pin 215 in the gingival-jaw direction, the spring 155 also moves in the gingival-jaw direction, at the same limit of movement as L2-L1. In conjunction with the movement of the spring 155 in the gingival-mandibular direction, the push plate 153 is moved toward the occlusal side wall 138 of the archwire slot 13 by the same limit of travel as L2-L1, i.e., the push plate 153 is pushed from the gingival side wall 136 of the archwire slot 13 toward the occlusal side wall 138. Until the flip cover 20 is completely closed, the engaging portion 121 of the bracket body 10 is designed such that the closing point 2137 of the shaft sleeve 213 is correspondingly close to the bottom surface 1132 of the receiving groove 113 when the engaging portion 121 is mated and butted with the engaging portion 23 of the flip cover 20. Thereby when realizing that the lid closes flip 20, the arch wire accommodation space of arch wire groove 13 is occupy to link stop gear's push pedal 153, carries out spacingly to the arch wire in gum jaw direction. The moving space of the arch wire in the arch wire groove 13 is reduced, so that the clearance of the arch wire groove 13 is reduced, and the accurate expression of the torque of the arch wire is realized.

When the lid 20 moves from the fully closed position to the fully open position, the sleeve 213 of the lid 20 rotates around the rotation pin 215 in the receiving groove 113, i.e., rotates in an involute trajectory, and the opening point 2135 of the sleeve 213 gradually moves toward the bottom surface 1132 of the receiving groove 113. The eccentric pushing of the bushing 213 causes the rotation pin 215 to gradually move away from the bottom surface 1132 of the receiving groove 113, i.e., toward the jaw-gum direction, to a limit of movement L2-L1. The bolt 151 moves in the jaw-gingival direction in conjunction with the movement of the rotating pin 215 in the jaw-gingival direction, and the movement limit is L2-L1. By the linkage of the movement of the bolt 151 in the jaw-gingival direction, the push plate 153 is drawn toward the gingival side wall 136 of the archwire slot 13 by the same limit of movement as L2-L1, i.e., the push plate 153 is drawn against the gingival side wall 136 of the archwire slot 13. Thereby when realizing opening flip 20, push pedal 153 reduces the occupy-place effect to archwire slot 13, and the arch wire accommodation space of archwire slot 13 resumes original size, avoids push pedal 153 to cause the oppression to the arch wire, and the arch wire is got to convenient clamp.

In the embodiment 1, the sliding member is a plurality of rollers 171, the rollers 171 are movably fitted into the occlusal side walls 138 of the archwire slot 13, and the rollers 171 and the push plate 153 sandwich the archwire, thereby reducing the problem of friction between the archwire and the archwire slot 13 caused by narrowing of the archwire slot 13. In other embodiments, the rollers 171 may be replaced with balls or tracks, all of which are capable of sliding relative to each other, so as to change static friction into dynamic friction, thereby reducing friction. In other embodiments, the sliding member is provided on the push plate 153 of the stopper mechanism, or the sliding member is provided on both the push plate 153 of the stopper mechanism and the occlusal side wall 138 of the archwire slot 13.

In this embodiment 1, one of the purposes of the spring 155 provided in the limiting mechanism is that the spring 155 can increase the elastic deformation of the limiting mechanism, so that when the pushing plate 153 abuts against the arch wire and receives an excessive force, the spring 155 can deform to avoid the damage of the limiting mechanism. Further, the spring 155 of the stop mechanism cooperates with the sliding member, combining elastic action and dynamic friction action, thereby further reducing the frictional effect of the archwire with the archwire slot 13. In other embodiments, a resilient member, including but not limited to a spring 155 or a leaf spring, is provided on the occlusal side wall 138 of the archwire slot 13. In other embodiments, a sliding member is provided on the occlusal side wall 138 of the archwire slot 13 and an elastic member is provided between the sliding member and the occlusal side wall 138 of the archwire slot 13 to elastically abut the archwire by elastically abutting the sliding member.

In the embodiment 1, the spring 155 of the limit mechanism is provided for another purpose, during the process of closing the flip 20, the spring 155 is pushed by the rotating pin 215 so as to push the push plate 153 to narrow the arch wire width. The head of the bolt 151 is clamped outside the pin hole 2150, no force is applied to the push plate 153 in the process of closing the flip 20, and the bolt 151 applies force when opening the flip 20. In other embodiments, the bolt 151 is not provided and the rotating pin 215 is not provided with the pin hole 2150, but the spring 155 is coupled at one end to the push plate 153 and at the other end to the rotating pin 215, and when the flip 20 is opened and closed, the spring 155 applies forces in two opposite directions to perform a reciprocating motion of the push plate 153 in the gingival-jaw direction, which elastically compresses the archwire. In other embodiments, the limiting mechanism is not provided with the spring 155, but is provided with a limiting key 159 at the middle of the bolt 151, the rotating pin 215 drives the limiting mechanism by pulling the head of the bolt 151 during the opening of the flip 20, and the rotating pin 215 drives the limiting mechanism by pushing the limiting key 159 during the closing of the flip 20, which rigidly compresses the arch wire.

In this embodiment 1, the distance between the head of the bolt 151 and the push plate 153 is the length of the stopper mechanism, and the length of the stopper mechanism can be adjusted by adjusting the depth of connection between the bolt 151 and the sleeve 157. The connecting depth of the bolt 151 and the sleeve 157 is reduced, the length of the limiting mechanism is increased, when the flip 20 is completely opened, the limiting protrusion 159 just abuts against the rotating pin 215, when the flip 20 is closed, the rotating pin does not push the push plate through pushing the spring, but the rotating pin pushes the push plate through pushing the limiting protrusion 159, when the resistance force from the arch wire is received, the push plate can not move in the gingival jaw direction due to the abutting effect of the limiting protrusion against the rotating pin, the buffering space is lost, and the arch wire is converted from the elastic compression arch wire into the rigid compression arch wire.

In the present embodiment 1, the inner side wall of the lid 20 is provided with a positioning scale 27 and an axis inclination identification line 28. The bracket generally circumscribes an axis-tilt marking line 28 and a positioning scale 27 to facilitate the bonding positioning of the surgeon. In this embodiment 1, the positioning scale 27 and the tilt marking line 28 are directly disposed on the inner sidewall of the flip 20, so that the integration and simplification are achieved, and the problem that the tilt marking line 28 in the prior art is prone to dropping is solved. Moreover, the positioning scale 27 and the tilt mark line 28 of the present embodiment 1 are made of bright colors, which is convenient for the doctor to recognize, and the appearance of the user is not affected when the flip 20 is closed.

In this embodiment 1, the inner side wall of the flip cover 20 is connected with at least two elastic pressing pieces, and the elastic pressing pieces are memory metal pieces with radian. The elastic pressing pieces are arranged at two sides of the turning cover 20 in the proximal and distal directions, and when the turning cover 20 closes the arch wire groove 13, the elastic pressing pieces abut against the arch wire in the arch wire groove 13. The elastic pressing sheet is combined with the push plate 153 of the limiting mechanism to limit the arch wire in the labial-lingual direction and the gingival-jaw direction, namely, the moving space of the arch wire in the arch wire groove 13 is further limited, namely, the arch wire accommodating space in the arch wire groove 13 is limited, then, the clearance of the arch wire groove 13 is further reduced, and the accurate expression torque of the arch wire is realized. The resilient tab may be replaced with other abutments 25 that provide an abutment against the archwire in the labial-lingual direction, including but not limited to, a press block, a compression spring, and a bolt.

In other embodiments, the sliding member is provided at the bottom 134 of the archwire slot 13 corresponding to the pressing member 25 provided at the flip 20, i.e., the bottom 134 of the archwire slot 13 may be provided with a roller 171, or a caterpillar, thereby reducing the friction in the labial direction of the archwire.

In other embodiments, the pivot portion comprises two bushings and a rotating shaft with an eccentric, and the two bushings are fixedly connected in the receiving groove of the first bracket wing. The rotary shaft is fixedly connected with the turnover cover, two ends of the rotary shaft are respectively arranged in the shaft sleeve, the turnover cover drives the rotary shaft to rotate in the shaft sleeve, the rotary shaft is provided with an eccentric wheel, and the eccentric wheel abuts against the driving component. In this embodiment, the driving member of the limiting mechanism comprises a connecting rod and a tension spring, one end of the connecting rod is connected with the push plate, and the other end of the connecting rod is contacted with the eccentric wheel. The tension spring is connected with the push plate or the connecting rod. When the turnover cover is opened, the protruding part of the eccentric wheel does not press the connecting rod, and the push plate is pulled to the gum side wall of the arch wire groove by the tension spring under the action of the propping force of the eccentric wheel. In the process of closing the turnover cover, the protruding part of the eccentric wheel gradually props against the connecting rod and transmits the pushing plate to move towards the occlusion side wall of the arch wire groove and resist the pulling force of the tension spring. Or the pivoting part comprises a rotating shaft and two shaft sleeves with eccentric wheels, the shaft sleeves are fixedly connected with the turnover cover, two ends of the rotating shaft respectively penetrate through the shaft sleeves and then are fixedly connected with the bearing grooves of the first supporting groove wings, the turnover cover drives the shaft sleeves to rotate around the rotating shaft, the shaft sleeves are provided with the eccentric wheels, and the eccentric wheels abut against the driving component. The connecting rod may be replaced with a bolt. The design advantage of this embodiment is that the flip is more robust to open and close.

In this embodiment 1, the archwire slot 13 is provided with a groove for accommodating the push plate 153, so that when the flip 20 is opened, the plate surface of the push plate 153 is flush with the gingival side wall 136 of the archwire slot 13, which is convenient for the archwire to enter and exit the archwire slot 13. In other embodiments, the groove may not be provided.

Example 2

As shown in fig. 7-10, the archwire slot changeable orthodontic bracket of this embodiment 2 comprises a bracket body 410, a flip 420, and a base plate. The base plate is disposed at the bottom of the bracket body 410 for bonding with the tooth surface.

Specifically, the bracket body 410 is provided with an archwire slot 413 and a limit mechanism, and the archwire slot 413 divides the bracket body 410 into two, including a first bracket wing 411 protruding in the maxillo-gingival direction and a second bracket wing 412 protruding in the gingival-maxillo direction.

Wherein, the middle of the gum surface of the first slot wing 411 is recessed to form a receiving groove, and the receiving groove receives the pivot 421 of the flip 420. The second bracket wing 412 is provided with a buckling position 4121 and an accommodating cavity 4123 for placing the limiting mechanism. The fastening position 4121 matches the fastening portion 423 of the fastening cover 420. The receiving cavity 4123 is provided with two openings including a first opening 4124 on the labial side of the bracket body 410, and a second opening 4126 in communication with the occlusal side wall 4138 of the archwire slot 413.

The folder 420 is provided with a pivoting part 421 and a buckling part 423. The pivot portion 421 of the flip 420 is movably disposed in the receiving slot, and the flip 420 rotates around the pivot portion 421 as a fulcrum to be movably connected to the bracket body 410. The pivot 421 of embodiment 2 is a shaft sleeve and a rotating shaft, the shaft sleeve is sleeved on the rotating shaft, and two ends of the rotating shaft are fixedly connected with the first slot supporting wings 411. The fastening portion 423 of the flip cover 420 is matched with the fastening position 4121 of the connecting bracket body 410. The flip 420 is used to open and close the archwire slot 413. The bottom 4134 of the archwire slot corresponds to the inside wall of the flip.

The inner side wall of the flip 420 is provided with a protrusion 424 for abutting against the limiting mechanism. The protrusion 424 corresponds to the first opening 4124 of the receiving cavity 4123, and when the flip cover 420 is covered on the bracket body 410, the protrusion 424 enters the receiving cavity 4123 through the first opening 4124.

The limiting mechanism comprises a push block 4151, a spring 4155, a push plate 4153 and a return spring 4157, the push block 4151, the spring 4155 and the return spring 4157 are arranged in the accommodating cavity 4123, and the push plate 4153 is arranged on the occlusion side surface of the arch wire groove 413. The lip side of the push block 4151 is a beveled surface that slopes downwardly in the gingival-jaw direction. The gingival surface of the push block 4151 is coupled to the push plate 4153 by a spring 4155, the spring 4155 extending through the second opening 4126. The return spring 4157 abuts between the push block 4151 and the inner wall of the receiving chamber 4123, and the return spring 4157 positions the inclined surface of the push block 4151 at a position where the protrusion 424 of the folder 420 enters the receiving chamber 4123.

The working principle of the embodiment 2 is as follows:

in general, when the flip 420 is rotated to open or close the archwire slot 413, the flip 420 is linked with the limiting mechanism, wherein the push block 4151, the spring 4155 and the return spring 4157 are driving members of the limiting mechanism and are disposed in the bracket body 410, and the push plate 4153 is an occupying member and is disposed in the archwire slot 413. The driver member is drivingly connected to the placeholder member such that the placeholder member, the push plate 4153, is moveable within the archwire slot 413 in the gingival-jaw direction, the push plate 4153 reducing the amount of movement of the archwire by occupying a portion of the space within the archwire slot 413, i.e., limiting the archwire receiving space within the archwire slot 413. The present invention achieves the goal of adjusting the archwire receiving space of the archwire slot 413.

Specifically, in the fully opened state of the flip cover 420, the protrusion 424 of the flip cover 420 does not enter the accommodating cavity 4123, and the push block 4151 is away from the gingival wall of the accommodating cavity 4123 under the urging action of the return spring 4157, and the push block 4151 is in the first position. The push block 4151 pulls the spring 4155 and thus the push plate 4153 proximate to the occlusal side wall 4138 of the archwire slot 413. Then, in the state where the folder 420 is fully opened, the archwire receiving space of the archwire slot 413 is maximized.

As the flip 420 is moved from the fully open to the fully closed position, the protrusions 424 on the inner side wall of the flip 420 gradually enter the receiving cavity 4123, and the protrusions 424 contact the inclined surface of the push block 4151 and push against the inclined surface, causing the push block 4151 to push against the spring 4155, thereby moving the push plate 4153 away from the first position and in the jaw-gingival direction within the archwire slot 413. That is, the push plate 4153 is pushed from the occlusal side wall 4138 of the archwire slot 413 toward the gingival side wall 4136. Until the flap 420 is closed, at which time the push block 4151 is positioned closer to the gingival side wall of the receiving cavity 4123 relative to the first position, at which time the push block 4151 is in a second position that is closer to the archwire slot than the first position. Thereby when realizing that the lid closes flip 420, the arch wire accommodation space of arch wire groove 413 is occupy to the push pedal 4153 of linkage stop gear, carries out spacingly to the arch wire in the gum jaw direction. The moving space of the arch wire in the arch wire groove 413 is reduced, so that the clearance of the arch wire groove 413 is reduced, and the accurate expression of the torque of the arch wire is realized.

When the flip cover 420 moves from the fully closed position to the fully opened position, the protrusions 424 of the flip cover 420 gradually leave the accommodating cavities 4123, the force of the protrusions 424 on the push block 4151 is lost, the return spring 4157 exerts the elastic force to push the push block 4151 to move in the gingival-jaw direction, and the push block 4151 moves from the second position to the first position. The push block 4151 pulls the push plate 4153 in the archwire slot 413 toward the gingival-mandibular direction by the spring 4155 and when the protrusion 424 is fully clear of the receiving cavity 4123, the push plate 4153 moves away from the gingival side wall of the receiving cavity 4123 and the push plate 4153 also returns to the occlusal side wall 4138 proximate the archwire slot 413. Thereby when realizing opening flip 420, push plate 4153 reduces the occupy-place effect to archwire groove 413, and the arch wire accommodation space of archwire groove 413 resumes original size, avoids push plate 4153 to cause the oppression to the arch wire, conveniently presss from both sides the arch wire of getting.

In this embodiment 2, the push block 4151 and the push plate 4153 are connected by a spring 4155, so that the limit of the push plate 4153 to the archwire is elastic. When the push plate 4153 abuts against the arch wire and receives overlarge force of the arch wire, the limit mechanism can be prevented from being damaged through elastic deformation. In other embodiments, the spring 4155 may be replaced with other connecting structures, including but not limited to a linkage, to achieve a rigid connection.

In the present embodiment 2, the return spring 4157 is a compression spring by providing the return spring 4157 between the gingival surface of the push block 4151 and the inner wall of the housing chamber 4123 so that the push block 4151 is in a state of being away from the archwire slot 413 when not pushed by the protrusion 424, and is moved in a direction of being away from the archwire slot 413 when the push block 4151 loses the pushing action of the protrusion 424. In other embodiments, the return spring 4157 may be disposed between the engagement surface of the push block 4151 and the inner wall of the receiving cavity 4123, in which case the return spring 4157 is a tension spring. In other embodiments, the return spring 4157 may be replaced with other resilient members, including but not limited to a rubber band or an arcuate resilient metal sheet.

As can be understood from the above description, in other embodiments, the interval between the first opening 4124 and the second opening 4126 of the accommodating chamber 4123 is eliminated, the push block 4151 and the push plate 4153 are formed as an integral bar, and a tension spring is provided between the engagement surface of the push block 4151 and the inner wall of the accommodating chamber 4123. The design can reduce the processing difficulty of a fine structure.

In combination with embodiment 1 and embodiment 2, the sliding member, the positioning scale, the axis inclination identification line, the pressing member on the lid 420, and the groove of the archwire slot 413 for receiving the push plate 4153 of embodiment 1 can be applied to embodiment 2.

As can be seen from example 2, the driving member converts the downward force of the inner side wall of the flip into a force toward the gingival and jaw direction to push the pusher plate to reduce the archwire receiving space of the archwire slot. Therefore, the limiting mechanism of the present embodiment 2 and the corresponding protrusion 424 of the flip 420 are disposed in a mirror image manner with respect to the arch wire groove 413, and can achieve the same technical effect. Or other, similar structures are also contemplated by the present invention.

Example 3

As shown in fig. 11-16, the archwire slot changeable orthodontic bracket of this embodiment 3 includes a bracket body 510, a slide cover 520, and a base plate. The base plate is disposed at the bottom of the bracket body 510 for bonding with the tooth surface.

Specifically, the bracket body 510 is provided with an archwire slot 513 and a limit mechanism, and the archwire slot 513 divides the bracket body 510 into two, including a first slot wing 511 protruding in the maxillo-gingival direction and a second slot wing 512 protruding in the gingival-maxillo direction.

The lip side of the first slot supporting wing 511 is provided with a receiving groove 5113 for receiving the sliding cover 520 and a receiving cavity 5115 for receiving the limiting mechanism. Two sides of the receiving groove 5113 are respectively provided with a sliding rail, and the sliding rails are slidably connected to the sliding cover 520 in a matching manner. The bottom surface of the receiving groove 5113 is partially recessed to form a receiving cavity 5115, and the opening of the receiving cavity 5115 corresponds to the inner side wall of the sliding cover 520. The barrier 5117 between the receiving chamber 5115 and the archwire slot 513 is set back in the labial-lingual direction, the top surface of the barrier 5117 is lower than the labial side of the first bracket wing 511, and the top surface of the barrier 5117 is higher than the bottom 5134 of the archwire slot 513.

The slide cover 520 is movably connected with the bracket body 510, and the slide cover 520 is used for opening and closing the arch wire groove 513. The inner side wall of the sliding cover 520 is provided with a limit groove 523 in the gingival engaging direction, and one end of the limit groove 523 corresponding to the occlusal surface of the sliding cover 520 is provided with a blocking part 525.

The limiting mechanism comprises a special-shaped column 5151 and a push plate 5153, wherein the special-shaped column 5151 is arranged in the accommodating cavity 5115, and the push plate 5153 is arranged in the arch wire groove 513. The push plate 5153 is an L-shaped plate, one surface of which is arranged on the gingival side wall 5136 of the archwire slot 513, and the other surface of which is hung on the top surface of the blocking wall 5117, and the hanging surface of the push plate 5153 is provided with a hole 5152 or a slot connected with the special-shaped column 5151.

The special-shaped column 5151 comprises a base 5154 and four elastic sub-columns, wherein two sub-columns form a locking sub-column 5156 in a group, the locking sub-column 5156 is connected with a limiting groove 523 of the sliding cover 520, the tail end of the locking sub-column 5156 is bent in the proximal and distal directions under the action of the limiting groove 523, and the locking sub-column 5156 is used for controlling the opening and closing locking of the sliding cover 520. The locking mechanism of the locking split post 5156 and the sliding cover 520 is conventional and will not be described herein. The other two branch columns are limit branch columns 5157, and the limit branch columns 5157 extend from the accommodating cavity 5115 across the top surface of the retaining wall 5117 to the arch wire groove 513 to obliquely extend into the limit groove 523. The tail end of the limiting branch column 5157 abuts against the blocking part 525 of the limiting groove 523, the tail end of the limiting branch column 5157 is bent in the gingival jaw direction under the action of the blocking part 525 of the limiting groove 523, and the limiting branch column 5157 is connected with the hole 5152 or the groove of the push plate 5153, so that the push plate 5153 is driven to move in the gingival jaw direction.

The working principle of the embodiment 3 is as follows:

generally, when the sliding cover 520 is pushed to open or close the archwire slot 513, the sliding cover 520 is linked with the limiting mechanism, wherein the special-shaped post 5151 is a driving member of the limiting mechanism and is disposed in the bracket body 510, and the push plate 5153 is an occupying member and is disposed in the archwire slot 513. The drive member is drivingly connected to the placeholder member such that the placeholder member, the push plate 5153, is movable in the gingival-jaw direction within the archwire slot 513, the push plate 5153 reducing the space available for movement of the archwire by occupying a portion of the space within the archwire slot 513, i.e., limiting the archwire receiving space within the archwire slot 513. The present invention achieves the goal of adjusting the archwire receiving space of the archwire slot 513.

Specifically, in a state where the slide cover 520 is completely opened, the stopper 525 of the slide cover 520 presses the limit sub-column 5157 to deform the same, thereby reducing or even losing the tilt angle. Under the influence of the deformation of the limit sub-column 5157, the push plate 5153 is tightened towards the jaw-gum and clings to the gingival side wall 5136 of the arch wire groove 513. Then, in the state where the slide cover 520 is fully opened, the archwire receiving space of the archwire slot 513 is maximized.

When the sliding cover 520 moves from the fully open state to the fully closed state, the limit groove 523 of the sliding cover 520 moves in the gingival-jaw direction, the force applied by the blocking portion 525 to the limit branch post 5157 is weakened, the limit branch post 5157 gradually recovers the inclination angle, so that the push plate 5153 is pushed to move in the gingival-jaw direction, the push plate 5153 is close to the occlusal side wall 5138 of the archwire groove, and the push plate 5153 occupies the archwire accommodating space of the archwire groove 513. When the sliding cover 520 is closed, the pushing plate 5153 of the limiting mechanism enables the width of the arch wire groove 513 to be reduced, the arch wire is limited in the gingival jaw direction, namely, the moving space of the arch wire in the arch wire groove 513 is limited, namely, the arch wire accommodating space in the arch wire groove 513 is limited, and under the condition that the moving space of the arch wire is reduced, the clearance of the arch wire groove 513 is reduced, so that the accurate expression torque of the arch wire is realized.

When the sliding cover 520 moves from the fully closed state to the fully opened state, the limiting groove 523 of the sliding cover 520 moves in the jaw-gum direction, the force applied by the blocking portion 525 to the limiting sub-column 5157 is gradually increased, the limiting sub-column 5157 gradually decreases or even loses the inclination angle, and thus the push plate 5153 is pulled to move in the jaw-gum direction. When the sliding cover 520 is opened, the push plate 5153 reduces the occupying effect on the arch wire groove 513, the arch wire accommodating space of the arch wire groove 513 is restored to the original size, the push plate 5153 is prevented from pressing the arch wire, and the arch wire is conveniently clamped.

Since the limit branch post 5157 is an elastic member, when an excessive force is applied to the push plate 5153 by the arch wire, the push plate 5153 has an elastic buffer space.

In combination with embodiment 1 and embodiment 3, the sliding member of embodiment 1 and the groove of the archwire slot 513 accommodating the push plate 5153 can be applied to embodiment 3.

In this embodiment 3, the dysmorphism post is equipped with only to lock and divides post and spacing branch post, and only to lock divides the conventional setting of combining in current orthodontic bracket of post and basal portion, on the basis of current design, increases a set of spacing branch post on the basal portion for only lock and two kinds of function piece unifications of adjustment archwire groove size, both simplified the processing degree of difficulty and operating procedure, the cavity space in compression archwire groove in still very big degree improves and integrates. In other embodiments, the locking elastic element and the limiting elastic element may be respectively disposed, the locking elastic element includes a first base and a locking sub-column, the limiting elastic element includes a second base and a limiting sub-column, and the locking elastic element and the limiting elastic element may be disposed in the same accommodating cavity or in different accommodating cavities. The function realization of the two is not influenced.

In this embodiment 3, the spacing groove has only to lock function and limit function concurrently, and it can with only lock the beam splitter accordant connection, can with spacing beam splitter accordant connection again. The functional principle is that the inner side wall of the sliding cover is provided with a groove, and in the sliding process of the locking elastic piece in the groove, the locking branch column is limited by the groove in the near-far direction to lock the sliding cover in an opening state and a closing state. The limiting elastic pieces for adjusting the size of the arch wire groove are different, and in the sliding process of the limiting elastic pieces in the groove, the groove is limited in the gingival jaw direction to drive the push plate. Because the action parts of the groove on the groove and the groove are different, two functions can be realized in the same groove.

In other embodiments, the locking groove and the limiting groove may be respectively formed in the inner side wall of the sliding cover, and the locking groove and the limiting groove are not communicated with each other. The function realization of the two is not influenced.

In this embodiment 3, the limiting sub-column is in a state of being inclined toward the side wall of the archwire slot in a normal state, that is, when the slide cover closes the archwire slot, the limiting sub-column is not pressed by the limiting slot of the slide cover, and only when the slide cover opens the archwire slot, the limiting sub-column is elastically deformed by the force applied by the blocking part of the limiting slot. The reason for this is that the normal state or the permanent state of the orthodontic bracket is the state of closing the archwire slot, and when closed, the sliding cover should be kept free from the action of external force as much as possible in order to avoid the sliding cover being opened. Therefore, the limiting sub-columns are set to generate resistance with the sliding cover only by opening the sliding cover, the sliding cover is prevented from being opened accidentally in the correcting process, and the correcting effect is ensured.

However, in other embodiments, if it is ensured that the sliding cover is not easily opened accidentally during the correction process, the normal state of the limiting branch post may be an upright state. When the sliding cover closes the arch wire groove, the limit branch post is elastically deformed by the force application of the inner side wall of the sliding cover, the push plate is pushed to reduce the arch wire accommodating space of the arch wire groove, when the sliding cover opens the arch wire groove, the inner side wall of the sliding cover gradually reduces the force application of the limit branch post, the limit branch post gradually restores the vertical state, and the push plate is pulled back to the side wall of the arch wire groove to restore the arch wire accommodating space of the arch wire groove.

Furthermore, in this embodiment 3, when the sliding cover completely closes the archwire slot, the sliding cover and the limiting branch post do not generate any acting force at all, for the same reason, to avoid the sliding cover being opened accidentally. However, in other embodiments, if it is ensured that the sliding cover is not likely to open accidentally during the orthosis procedure, it may be configured such that when the sliding cover is fully closed to the archwire slot, some resistance is still maintained between the sliding cover and the limiting sub-posts, but not enough to push the sliding cover open accidentally.

Example 4

As shown in fig. 17-20, the archwire slot 613 of this embodiment 4 is a variable orthodontic bracket that includes a bracket body 610, a slide cover 620, and a base plate. The base plate is disposed at the bottom of the bracket body 610 for bonding with the tooth surface.

Specifically, the bracket body 610 is provided with an archwire slot 613 and a limit mechanism, and the archwire slot 613 divides the bracket body 610 into two, including a first slot wing 611 protruding in the maxillo-gingival direction and a second slot wing 612 protruding in the gingival-maxillo direction.

The lip side of the first slot supporting wing 611 is provided with a receiving groove 6113 for accommodating the sliding cover 620, and two sides of the receiving groove 6113 are respectively provided with a sliding rail, and the sliding rails are connected with the sliding cover 620 in a sliding manner in a matching manner. The second bracket wing 612 is provided with a receiving cavity 6123, the receiving cavity 6123 is provided with two openings, including a first opening 6124 located on the labial side of the bracket body 610, and a second opening 6126 communicated with the occlusal side wall 6138 of the archwire slot 613.

The slide cover 620 is movably connected to the bracket body 610, and the slide cover 620 is used to open and close the archwire slot 613. When the slide cover 620 closes the archwire slot 613, the leading edge of the slide cover 620 overlies the second bracket wing 612 and the slide cover 620 closes at least partially the enclosed receiving cavity 6123. The bottom 6134 of the archwire slot corresponds to the inside wall of the slider.

The limiting mechanism comprises an angle code 6151, a spring 6155, a push plate 6153 and a return spring 6157, the angle code 6151, the spring 6155 and the return spring 6157 are arranged in the accommodating cavity 6123, and the push plate 6153 is arranged on the occlusion side wall 6138 of the arch wire groove 613. The corner 6156 of the corner connector 6151 is movably connected with the inner wall of the accommodating cavity 6123, so that the corner connector 6151 can rotate by taking the corner 6156 as a fulcrum. One arm of the angle brace 6151 is connected with the return spring 6157, the arm is an active arm of the angle brace 6151, the active arm protrudes out of the first opening 6124 of the accommodating cavity 6123 under the elastic action of the return spring 6157, and the active arm is pressed down by the covered sliding cover 620 to rotate the angle brace 6151. The other arm of the angle bracket 6151 is in transmission connection with the push plate 6153 through a spring 6155, the spring 6155 penetrates through the second opening 6126, and the arm is a driven arm of the angle bracket 6151.

The working principle of the embodiment 4 is as follows:

generally, when the sliding cover 620 is pushed to open or close the archwire slot 613, the sliding cover 620 is linked with the limiting mechanism, wherein the angle code 6151, the spring 6155 and the return spring 6157 are driving members of the limiting mechanism and are disposed in the bracket body 610, and the push plate 6153 is an occupying member and is disposed in the archwire slot 613. The driving member is in driving connection with the occupying member, so that the occupying member, the push plate 6153, moves in the gingival-jaw direction in the archwire slot 613, and the push plate 6153 reduces the movement space of the archwire by occupying part of the space in the archwire slot 613, i.e., limits the archwire receiving space in the archwire slot 613. The present invention accomplishes the purpose of adjusting the archwire receiving space of the archwire slot 613.

Specifically, in a state where the sliding cover 620 is completely opened, the return spring 6157 pushes the driving arm of the corner connector 6151 up to the outside of the first opening 6124 of the accommodating cavity 6123. Correspondingly, the driven arm of the angle bracket 6151 is pulled to the occlusal side wall of the accommodating cavity 6123 by the driving arm. The driven arm pulls the push plate 6153 through the spring 6155 to abut the occlusal side wall 6138 of the archwire slot 613. Then, in a state where the slide cover 620 is fully opened, the archwire receiving space of the archwire slot 613 is maximized.

When the sliding cover 620 moves from the fully opened state to the fully closed state, the sliding cover 620 gradually closes the accommodating cavity 6123 of the second slot-supporting wing 612, and the sliding cover 620 presses down the active arm of the angle code 6151 and the return spring 6157. The driving arm rotates around the corner 6156 of the corner connector 6151 in the process of being pressed down, the driven arm rotates along with the driving arm and approaches to the gingival side wall of the accommodating cavity 6123, the driven arm pushes the push plate 6153 to move towards the jaw-gingival direction in the arch wire groove 613 through the spring 6155, and the push plate 6153 occupies the arch wire accommodating space of the arch wire groove 613. Therefore, when the sliding cover 620 is closed, the width of the arch wire groove 613 is reduced by the push plate 6153 of the limiting mechanism, the arch wire is limited in the gingival jaw direction, namely, the movement space of the arch wire in the arch wire groove 613 is limited, namely, the arch wire accommodating space in the arch wire groove 613 is limited, and under the condition that the movement space of the arch wire is reduced, the clearance of the arch wire groove 613 is reduced, so that the accurate expression torque of the arch wire is realized.

When the sliding cover 620 moves from the fully closed state to the fully opened state, the sliding cover 620 gradually opens the accommodating cavity 6123, the pressing-down effect of the sliding cover 620 on the corner connector 6151 is lost, the elastic deformation of the return spring 6157 converts the elastic potential energy into the kinetic energy to abut against the corner connector 6151, and the corner connector 6151 rotates reversely relative to the closed sliding cover 620. The follower arm of the bracket 6151 is again moved away from the gingival side wall of the receiving cavity 6123 and the push plate 6153 is also moved in the gingival-mandibular direction within the archwire slot 613 and the push plate 6153 is repositioned back onto the occlusal side wall 6138 of the archwire slot 613. Thereby when realizing opening sliding cover 620, the gingival lateral wall 6136 of the archwire slot 613 is kept away from to push plate 6153, and push plate 6153 reduces the occupy-place effect to archwire slot 613, and the arch wire accommodation space of archwire slot 613 resumes original size, avoids push plate 6153 to cause the oppression to the arch wire, conveniently presss from both sides and gets the arch wire.

In this embodiment 4, the corner brace 6151 is connected to the push plate 6153 through the spring 6155, so that the limit of the push plate 6153 to the arch wire is elastic limit, and when the push plate 6153 abuts against the arch wire and receives an excessive force from the arch wire, the limit mechanism can be prevented from being damaged through elastic deformation. In other embodiments, the spring 6155 may be replaced with other connecting structures, including but not limited to a linkage, to achieve a rigid connection.

In this embodiment 4, the return spring 6157 is disposed between the active arm of the corner brace 6151 and the inner wall of the accommodating cavity 6123, so that the corner brace 6151 protrudes out of the first opening 6124 of the accommodating cavity 6123 when not being pressed by the sliding cover 620, and is reset when the corner brace 6151 loses the pressing force of the sliding cover 620, and at this time, the return spring 6157 is a compression spring. In other embodiments, the return spring 6157 may be disposed between the active arm of the angle bracket 6151 and the second bracket wing 612 outside the receiving cavity 6123, in which case the return spring 6157 is a tension spring. Alternatively, in other embodiments, the return spring 6157 is coupled to the follower arm of the angle bracket 6151 at the same time as the spring 6155. In other embodiments, the return spring 6157 may be replaced with other elastic members, including but not limited to rubber bands or arc-shaped elastic metal sheets.

In combination with embodiment 1 and embodiment 4, the sliding member of embodiment 1 and the groove of the archwire slot 613 to receive the push plate 6153 can be applied to embodiment 4.

Moreover, the limiting mechanism of the embodiment 4 can be applied to a flip bracket, and can achieve the same technical effect.

In addition, the limiting mechanism of this embodiment 4 can be arranged in a mirror image manner with respect to the archwire slot 613, and the limiting mechanism is arranged on the first slot wing 611, thereby achieving the same technical effects.

Example 5

As shown in fig. 21-26, the archwire slot changeable orthodontic bracket of this embodiment 5 includes a bracket body 710, a screw cap 720, and a base plate. The base plate is disposed at the bottom of the bracket body 710 for bonding with the tooth surface.

Specifically, the bracket body 710 is provided with an archwire slot 713 and a stopper mechanism, and the archwire slot 713 divides the bracket body 710 into two including a first bracket wing 711 protruding in a maxillo-gingival direction and a second bracket wing 712 protruding in a gingival-maxillo direction.

Wherein, the middle part of the lip side surface of the first slot supporting wing 711 is recessed to form an accommodating cavity 7113, and the accommodating cavity 7113 accommodates the pivoting part of the rotating cover 720. The second bracket wing 712 is provided with a snap-fit location 7121 that mates with the swivel cap 720.

The spin cover 720 is provided with a pivot portion and a snap portion 723. The pivot portion of the rotary cover 720 is movably disposed in the receiving cavity 7113, and the rotary cover 720 rotates around the pivot portion as a fulcrum to movably connect with the bracket body 710. The fastening portion 723 of the screw cap 720 is matched with the fastening position 7121 of the connecting bracket body 710. The screw cap 720 is used to open and close the archwire slot 713.

The pivot part of embodiment 5 includes a rotating shaft 721 and a sleeve with a shaft hole 722, the sleeve is disposed on the inner side wall of the rotating cover 720, the shaft hole 722 is axial in the labial and lingual direction, and the rotating shaft 721 is also fixedly connected in the accommodating chamber 7113. The shaft hole 722 of the sleeve is sleeved with the screw shaft 721, so that the screw cover 720 rotates around the screw shaft 721 to open or close the arch wire groove 713.

The limiting mechanism comprises a shaft sleeve 7151 with a protrusion 7158, a push plate 7153 and a return spring 7157, wherein the protrusion 7158 of the shaft sleeve 7151 is arranged on the outer side wall of the shaft sleeve 7151. The shaft sleeve 7151 is accommodated in the accommodating cavity 7113, and the shaft sleeve 7151 is in transmission connection with the sleeve of the screw cap 720. In the embodiment 5, the shaft sleeve 7151 with the protrusion 7158 is preferably integrally formed with the sleeve of the screw cap 720, so that the processing process is simplified. The shaft sleeve 7151 with the protrusion 7158 is sleeved on the rotating shaft 721, the shaft sleeve 7151 is driven by the sleeve to rotate around the rotating shaft 721, and the protrusion 7158 of the shaft sleeve 7151 and the buckling part 723 of the spin cover 720 are arranged in the same direction. The push plate 7153 is urged by the return spring 7157 into the archwire slot 713 and against the gingival side wall 7136 of the archwire slot 713. The push plate 7153 attached to the gingival side wall 7136 of the archwire slot 713 is within the reach of the projection 7158 of the boss 7151. The return spring 7157 is embedded within the gingival sidewall 7136 of the archwire slot 713.

The working principle of the embodiment 5 is as follows:

in general, when the rotation cover 720 is rotated to open or close the archwire slot 713, the rotation cover 720 is linked with the limiting mechanism, wherein the sleeve 7151 with the protrusion 7158 and the return spring 7157 are driving members of the limiting mechanism and are disposed in the bracket body 710, and the push plate 7153 is an occupying member and is disposed in the archwire slot 713. The driver member is drivingly connected to the placeholder member such that the placeholder member, the push plate 7153, is movable in the gingival-jaw direction within the archwire slot 713, the push plate 7153 reducing the space available for movement of the archwire by occupying a portion of the space within the archwire slot 713, i.e., limiting the archwire receiving space within the archwire slot 713. The present invention accomplishes the goal of adjusting the archwire receiving space of the archwire slot 713.

Specifically, when the screw cap 720 is completely opened, the engaging portion 723 of the screw cap 720 is far away from the bracket body 710, and accordingly, the protrusion 7158 of the sleeve 7151 of the limiting mechanism is also far away from the archwire slot 713, and the push plate 7153 is only pressed against the gingival side of the archwire slot 713 by the force of the return spring 7157. Then, in the state where the screw cap 720 is fully opened, the archwire receiving space of the archwire slot 713 is maximized.

When the screw cap 720 is moved from the fully open to the fully closed position, the sleeve of the screw cap 720 is rotated about the screw axis 721 within the receiving cavity 7113, the protrusion 7158 of the sleeve 7151 is also rotated toward the archwire slot 713, and the protrusion 7158 of the sleeve 7151 abuts against the push plate 7153 toward the occlusal side wall 7138 of the archwire slot 713, i.e., the push plate 7153 is pushed from the gingival side wall 7136 of the archwire slot 713 toward the occlusal side wall 7138. Therefore, when the rotary cover 720 is covered, the push plate 7153 of the linkage limiting mechanism occupies the arch wire accommodating space of the arch wire groove 713, and limits the arch wire in the gingival jaw direction. The movement space of the arch wire in the arch wire groove 713 is reduced, so that the clearance of the arch wire groove 713 is reduced, and the accurate expression of the torque of the arch wire is realized.

When the screw cap 720 moves from the fully closed state to the fully opened state, the protrusion 7158 of the sleeve 7151 rotates along with the sleeve of the screw cap 720, the protrusion 7158 gradually moves away from the archwire slot 713, the push plate 7153 loses the force of the protrusion 7158, and the elastic potential energy of the return spring 7157 is converted into kinetic energy to pull the push plate 7153 to approach the gingival side wall 7136 of the archwire slot 713, i.e., the push plate 7153 is folded on the gingival side wall 7136 of the archwire slot 713. Thereby when realizing opening spiral cover 720, push plate 7153 reduces the occupy-place effect to archwire slot 713, and the arch wire accommodation space of archwire slot 713 resumes original size, avoids push plate 7153 to cause the oppression to the arch wire, and the arch wire is got to convenient clamp.

In other embodiments, the boss 7151 with the protrusion 7158 may be provided separately from the sleeve of the screw cap 720. For example, the shaft sleeve 7151 is sleeved outside the sleeve, and the inner side wall of the shaft sleeve 7151 is clamped with the outer side wall of the sleeve, so that the sleeve rotates to drive the shaft sleeve 7151 to rotate. Or, the shaft sleeve 7151 and the sleeve are respectively and independently connected in series to the rotating shaft 721, and the upper shaft surface of the shaft sleeve 7151 is clamped with the lower shaft surface of the sleeve, so that the sleeve rotates to drive the shaft sleeve 7151 to rotate.

In other embodiments, the sleeve 7151 with the protrusions 7158 is replaced with an eccentric.

In combination with embodiment 1 and embodiment 5, the sliding member of embodiment 1 and the groove of the archwire slot 713 that receives the push plate 7153 can be applied to embodiment 5.

Example 6

As shown in fig. 27-30, the archwire slot changeable orthodontic bracket of this embodiment 6 includes a bracket body 810, a screw cap 820, and a base plate. The base plate is disposed at the bottom of the bracket body 810 for bonding with the tooth surface.

Specifically, the bracket body 810 is provided with an archwire slot 813 and a limiting mechanism, and the archwire slot 813 divides the bracket body 810 into two parts including a first bracket wing 811 protruding in the maxillo-gingival direction and a second bracket wing 812 protruding in the gingival-maxillo direction.

The middle part of the lip side surface of the first slot supporting wing 811 is concave to form a first accommodating cavity 8113, and the first accommodating cavity 8113 accommodates the pivoting part of the screw cover 820. The second slot wing 812 is provided with a second accommodating cavity 8123 for placing a limiting mechanism and a buckling position 8121 matched with the screw cap 820. The second receiving cavity 8123 is provided with two openings, including a first opening on the labial side of the bracket body 810 and a second opening in communication with the occlusal side wall 8138 of the archwire slot 813.

The screw cap 820 is provided with a pivot portion and a snap portion 823. The pivot portion of the rotary cover 820 is movably disposed in the first accommodating cavity 8113, and the rotary cover 820 rotates around the pivot portion as a fulcrum to movably connect with the bracket body 810. The fastening portion 823 of the screw cap 820 is matched with the fastening position 8121 of the connecting bracket body 810. The screw cap 820 is used to open and close the archwire slot 813.

The pivot part of embodiment 6 includes a rotating shaft 821 and a sleeve with a shaft hole 822, the sleeve is disposed on the inner side wall of the rotating cover 820, the shaft hole 822 is an axis in the labial and lingual direction, and the rotating shaft 821 is fixedly connected in the first accommodating chamber 8113. The shaft hole 822 of the sleeve is fitted with the screw shaft 821 so that the screw cap 820 rotates around the screw shaft 821 to open or close the arch wire groove 813.

The limiting mechanism comprises an elastic transmission part 8151, a push plate 8153 and a return spring 8157, the elastic transmission part 8151 and the return spring 8157 are arranged in the second accommodating cavity 8123, and the push plate 8153 is arranged on the occlusion side wall 8138 of the arch wire groove 813. The elastic transmission element 8151 is a special-shaped element made of elastic metal and comprises a driving arm and a driven arm, one end of the driving arm is connected with one end of the driven arm, and a connecting part 8158 is movably connected with the inner wall of the second accommodating cavity 8123, so that the elastic transmission element 8151 can rotate the two arms by taking the connecting part 8158 as a fulcrum. The driving arm of the elastic transmission element 8151 is connected to the return spring 8157, the driving arm is elastically protruded out of the first opening of the second accommodating cavity 8123 by the return spring 8157, and the driving arm is pressed down by the covered cap 820 to rotate the elastic transmission element 8151. The push plate 8153 is provided with a connecting rod, the driven arm of the corner connector is connected with the push plate 8153 through the connecting rod in a transmission mode, and the connecting rod penetrates through the second opening.

The working principle of the embodiment 6 is as follows:

generally, when the rotary cap 820 is rotated to open or close the archwire slot 813, the rotary cap 820 is linked with a limiting mechanism, wherein the elastic transmission part 8151 and the return spring 8157 are driving members of the limiting mechanism and are disposed in the bracket body 810, and the push plate 8153 is an occupying member and is disposed in the archwire slot 813. The driver member is drivingly connected to the placeholder member such that the placeholder member, the push plate 8153, moves in the gingival-jaw direction within the archwire slot 813, the push plate 8153 reducing the space available for movement of the archwire by occupying a portion of the space within the archwire slot 813, i.e., limiting the archwire receiving space within the archwire slot 813. The present invention achieves the purpose of adjusting the archwire receiving space of the archwire slot 813.

Specifically, when the screw cap 820 is completely opened, the engaging portion 823 of the screw cap 820 is away from the bracket body 810, and the return spring 8157 pushes the active arm of the elastic transmission member 8151 up to the outside of the first opening of the second accommodating cavity 8123. Correspondingly, the driven arm of the elastic transmission member 8151 is drawn by the driving arm to be close to the biting side wall 8138 of the second accommodation chamber 8123. The follower arm pulls the push plate 8153 through the linkage proximate the occlusal side wall 8138 of the archwire slot 813. In the fully opened state of the screw cap 820, the archwire receiving space of the archwire slot 813 is maximized.

As the screw cap 820 moves from fully open to fully closed, the screw cap 820 gradually closes the second receiving cavity 8123 of the second socket wing 812, and the screw cap 820 presses down the driving arm of the elastic transmission member 8151 and the return spring 8157. The driving arm rotates around the connection part 8158 of the elastic transmission part 8151 in the process of being pressed down, then the driven arm rotates and approaches to the gingival side wall of the second accommodating cavity 8123, the driven arm pushes the push plate 8153 to move towards the jaw-gum direction in the arch wire groove 813 through the connecting rod, and the push plate 8153 occupies the arch wire accommodating space of the arch wire groove 813. Thereby when realizing that the lid closes spiral cover 820, stop gear's push pedal 8153 makes the width of archwire groove 813 diminish, spacing arch wire on the gingival jaw direction, promptly, the activity space of arch wire in archwire groove 813 has carried out the restriction, promptly, has restricted the arch wire accommodation space in archwire groove 813, and under the condition that the activity space of arch wire reduces, the clearance of archwire groove 813 reduces, realizes that the accurate expression torque of arch wire.

When the screw cap 820 moves from complete closing to complete opening, the screw cap 820 gradually opens the second accommodating cavity 8123, the pressing-down effect of the screw cap 820 on the elastic transmission element 8151 is lost, the elastic deformation of the return spring 8157 converts the elastic potential energy into the kinetic energy to abut against the driving arm of the elastic transmission element 8151, and the elastic transmission element 8151 reversely rotates relative to the screw cap 820 closing process. The follower arm of the resilient drive element 8151 is again moved away from the gingival side wall of the second receiving chamber 8123 and the push plate 8153 is also moved in the gingival-mandibular direction within the archwire slot 813 with the push plate 8153 being repositioned back onto the occlusal side wall 8138 of the archwire slot 813. Thereby when realizing opening spiral cover 820, push plate 8153 reduces the occupy-place effect to archwire slot 813, and the arch wire accommodation space of archwire slot 813 resumes original size, avoids push plate 8153 to cause the oppression to the arch wire, conveniently presss from both sides the arch wire of getting.

In this embodiment 6, the driven arm of the elastic transmission element 8151 is connected to the connecting rod of the push plate 8153, so that the limit of the push plate 8153 on the arch wire is elastic limit, and when the push plate 8153 abuts against the arch wire and receives an excessive force from the arch wire, the limit mechanism can be prevented from being damaged by elastic deformation.

In other embodiments, return spring 8157 may be replaced with other elastic members, including but not limited to a rubber band, an arc-shaped elastic metal sheet, or an elastic transmission member 8151 similar to that of embodiment 6.

In combination with embodiment 1 and embodiment 6, the sliding part of embodiment 1 and the groove of the archwire slot 813 to receive the push plate 8153 can be applied to embodiment 6.

Further, as can be seen from the various embodiments above, the stop mechanisms can be disposed on either side of the archwire slot and can be understood to be independent of each other. The present invention may also be modified from the above-described embodiments. Such as: the two sides of the arch wire groove of the embodiment 2 are respectively provided with a group of limiting mechanisms of the embodiment 2 in a mirror image mode, and the inner side surface of the flip cover is correspondingly provided with two protrusions, so that the two side walls of the arch wire groove can reduce the arch wire accommodating space of the arch wire groove when the flip cover is closed.

For another example, when the stopper mechanism of example 4 is provided in example 3, the archwire receiving space of the archwire slot can be reduced by closing the slide cover so that both side walls of the archwire slot.

For another example, when the stopper mechanism of example 6 is provided in example 5, the archwire receiving space of the archwire slot can be reduced by closing the rotary cover on both side walls of the archwire slot.

To setting up stop gear respectively in the both sides of archwire groove for the both sides wall in archwire groove all reduces the archwire accommodation space in archwire groove, and be not only two unilateral spacing simple additions. However, the prior art is designed to bond the bracket to the midpoint of the tooth axis, and to reduce the wire receiving space of the archwire slot on one side, thereby facilitating the displacement of the axial center of the archwire. The axle center of the arch wire is deviated to the occlusal side wall of the arch wire groove or the gingival side wall of the arch wire groove, so that the acting force of the arch wire relative to the corrected tooth is changed, namely the axle center of the arch wire is deviated to the occlusal side wall of the arch wire groove, the axle center of the arch wire is close to the occlusal surface of the tooth, and the correction force of the arch wire at the moment is larger than the correction force of the arch wire at the midpoint of the tooth axis; on the contrary, the axis of the arch wire is deviated to the gingival side wall of the arch wire groove, and the correction force of the arch wire at the moment is smaller than the correction force of the arch wire at the midpoint of the tooth axis. The arch wire accommodating space of the arch wire groove is reduced by the same step pitch on the two sides, so that the arch wire is kept in the middle point of the tooth axis and is not deviated, and the correction force of the arch wire is ensured to be proper.

The present invention is not limited to the above-described embodiments, and various changes and modifications of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.

Claims

1. An orthodontic bracket with a changeable arch wire groove is characterized in that: the bracket comprises a bracket body and a cover body, wherein the bracket body is provided with an arch wire groove and a limiting mechanism, the limiting mechanism is linked with the cover body, and when the cover body closes the arch wire groove, the limiting mechanism reduces the arch wire accommodating space of the arch wire groove; when the cover body is opened, the limiting mechanism restores the arch wire accommodating space of the arch wire groove.

2. The archwire slot changeable orthodontic bracket of claim 1, wherein: the limiting mechanism comprises a driving member and an occupying member, and the occupying member is arranged in the arch wire groove; the cover body is in transmission connection with the driving component, the driving component is in transmission connection with the occupying component, and the driving component is linked with the opening and closing of the cover body to drive the occupying component to move towards the gingival jaw direction in the arch wire groove.

3. The archwire slot changeable orthodontic bracket of claim 2, wherein: the driving component is embedded in the bracket main body and is connected with the inner side wall of the cover body or the pivoting part of the cover body.

4. The archwire slot changeable orthodontic bracket of claim 1, wherein: the limiting mechanism and/or the arch wire groove are/is internally provided with an elastic part for elastically limiting the arch wire accommodating space of the arch wire groove.

5. The archwire slot changeable orthodontic bracket of claim 1, wherein: the archwire slot is provided with a sliding component for reducing friction between the archwire and the archwire slot.

6. The archwire slot changeable orthodontic bracket of claim 2, wherein: the space occupying member is arranged on one side wall of the arch wire groove, and the elastic piece and/or the sliding part are arranged on the other side wall of the arch wire groove.

7. The archwire slot changeable orthodontic bracket of claim 2, wherein: one surface of the occupying component, which corresponds to the arch wire, is provided with a sliding component for reducing the friction between the arch wire and the limiting mechanism.

8. The archwire slot changeable orthodontic bracket of any one of claims 1-7, wherein: the inner side wall of the cover body is provided with a pressing piece, and the pressing piece corresponds to the arch wire groove.

9. The archwire slot changeable orthodontic bracket of claim 2, wherein: the cover body is a flip cover, a sliding cover or a screw cover; the cover body is in transmission connection with the driving component, so that the driving component moves in the gingival jaw direction; the occupying component is arranged on the side wall of the arch wire groove, and the driving component is in transmission connection with the occupying component, so that the occupying component moves in the gingival and jaw direction.

10. The archwire slot changeable orthodontic bracket of claim 9, wherein: the inner side wall of the flip cover is provided with a positioning scale and/or an axis inclination identification line; the outer side wall of the sliding cover or the screw cover is provided with a positioning scale and/or an axis inclination identification line.

11. The archwire slot changeable orthodontic bracket of claim 4 or 6, wherein: the elastic piece is a spring or a metal elastic sheet.

12. The archwire slot changeable orthodontic bracket of claim 5 or 6, wherein: the sliding parts are rollers or balls or tracks.

13. The archwire slot changeable orthodontic bracket of claim 8, wherein: the pressing piece is a pressing block, an elastic sheet, a pressure spring or a bolt.

14. An orthodontic bracket with a changeable arch wire groove is characterized in that: the bracket comprises a bracket body and a cover body, wherein the bracket body is provided with an arch wire groove and a limiting mechanism, and two sides of the arch wire groove are respectively provided with at least one limiting mechanism; the limiting mechanism is linked with the cover body, and when the cover body closes the arch wire groove, the limiting mechanism reduces the arch wire accommodating space of the arch wire groove; when the cover body is opened, the limiting mechanism restores the arch wire accommodating space of the arch wire groove.