CN112237489A

CN112237489A - Flip type orthodontic bracket with variable arch wire groove

Info

Publication number: CN112237489A
Application number: CN201910643556.5A
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: 2021-01-19
Anticipated expiration: 2039-07-17
Also published as: CN112237489B

Abstract

The invention discloses a flip type orthodontic bracket with a variable arch wire groove, which comprises a bracket main body and a flip, wherein the bracket main body is provided with an arch wire groove and a limiting mechanism, the limiting mechanism comprises a driving member and a push plate, and the push plate is arranged in the arch wire groove; the pivot part of the flip is in transmission connection with the driving component, and the driving component is in transmission connection with the push plate. 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

Flip type orthodontic bracket with variable arch wire groove

Technical Field

The invention relates to the field of orthodontic treatment equipment for teeth, in particular to a flip type 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

Aiming at the technical problems, the invention provides the flip type orthodontic bracket with the variable arch wire groove, which can avoid the technical problems.

The technical scheme adopted by the invention for solving the technical problem is as follows: a flip orthodontic bracket with a variable arch wire groove comprises a bracket main body and a flip, wherein the bracket main body is provided with an arch wire groove and a limiting mechanism, the limiting mechanism comprises a driving member and a push plate, and the push plate is arranged in the arch wire groove; the pivot part of the flip is in transmission connection with the driving member, and the driving member is in transmission connection with the push plate; when the turning cover closes the arch wire groove, the driving component is linked by the turning cover to drive the push plate to reduce the arch wire accommodating space of the arch wire groove; when the flip cover is opened, the driving component is linked by the flip cover to drive the push plate to recover 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 limiting mechanism is arranged, the flip cover drives the limiting mechanism to adjust the arch wire accommodating space of the arch wire groove, when the flip cover is closed, the limiting 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 effect of the orthodontic bracket is enhanced, when the flip cover 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 amplitude of the arch wire groove can be quantitatively adjusted more accurately and accurately by setting the 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 realizes the switching of two states through the linkage of the flip cover, when the arch wire groove is opened, the arch wire groove restores the original enough arch wire accommodating space, the arch wire is convenient to put in and take out, and the damage to the bracket and the tooth caused by the stress on the bracket and the tooth is 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.

4. The flip is transmitted to the driving member, the driving member is transmitted to the push plate, and the flip pushes the push plate to occupy the space in the arch wire groove through the driving member, so that the size of the arch wire accommodating space is limited. The setting of driving member effectively avoids flip direct action in the push pedal and the atress that causes is uneven, also effectively avoids the push pedal to flip's reaction force and make the potential risk that flip pine takes off, and the push pedal is isometric with the lateral wall in archwire groove for the push pedal can be carried on spacingly in the archwire groove comprehensively.

Further, the driving component drives the push plate to move towards the gingival jaw direction in the arch wire groove. The limit of the push plate to the arch wire and the acting force of the turnover cover to the arch wire are in different directions, so that extra thrust is prevented from being caused to the turnover cover, and the turnover cover is effectively prevented from being loosened.

In particular, the drive member is a connecting rod; the pivot part of the flip cover comprises a rotating pin and a shaft sleeve which is arranged in an involute structure, the shaft sleeve is fixedly connected with the body of the flip cover, the shaft sleeve is sleeved with the rotating pin, and two ends of the rotating pin are movably connected with the bracket main body to enable the rotating pin to move in the gingival jaw direction; the rotating pin is in transmission connection with one end of the connecting rod, and the other end of the connecting rod is in transmission connection with the push plate. Connect drive component in flip's pivot portion for when flip rotatory opened and shut, linkage drive component and then drive the push pedal and move in gum jaw direction, the direction of motion of pivot portion is different with the direction of motion of push pedal, thereby effectively avoid the reaction force of push pedal to cause flip to take off, avoid flip to open under the state of correcting.

Specifically, the driving member comprises a bolt and a spring, and the push plate is also provided with an internal thread sleeve; the pivot part of the flip cover comprises a rotating pin and a shaft sleeve which is arranged in an involute structure, the shaft sleeve is fixedly connected with the body of the flip cover, the shaft sleeve is sleeved with the rotating pin, and two ends of the rotating pin are movably connected with the bracket main body to enable the rotating pin to move in the gingival jaw direction; the rotating pin is in transmission connection with the head of the bolt, and 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 rotating pin.

Furthermore, the bolt is radially provided with a limiting protrusion, and the limiting protrusion is in contact with or away from the rotating pin by adjusting the connection depth of the bolt and the internal thread sleeve, so that the limiting mechanism is adjusted to be elastically supported or rigidly supported.

In particular, the drive member is a connecting rod; the pivot part of the flip cover comprises a shaft sleeve and a rotating shaft, wherein any structure of the shaft sleeve and the rotating shaft is provided with an eccentric wheel, the structure provided with the eccentric wheel is fixedly connected with the flip cover body, and the other structure is fixedly connected with the bracket main body; the eccentric structure movably supports against one end of the connecting rod, and the other end of the connecting rod is in transmission connection with the push plate.

In particular, the drive member is disposed in-line within the bracket 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.

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 push plate is disposed on one side wall of the archwire slot, and the other side wall of the archwire slot is provided with an elastic member and/or a sliding member. The push plate and the elastic piece clamp the arch wire together, so that the resistance acting force of the arch wire is effectively buffered. The push plate and the sliding part clamp the arch wire together, so that the direct friction between the arch wire and the bracket is effectively reduced.

Specifically, one surface of the push plate corresponding to the arch wire is provided with a sliding part for reducing the friction between the arch wire and the limiting mechanism. The sliding part is arranged on the push plate, so that the friction between the push plate and the arch wire is reduced.

Furthermore, the inner side wall of the turnover cover 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 push plate moves towards the gingival jaw direction in the arch wire groove, and the abutting part is limited in the labial lingual direction corresponding to the arch wire, so that the push plate is used for limiting the arch wire in the crossed direction of the two crosses under the combined action of the abutting part, a very good limiting effect is achieved, the torque of the arch wire is further accurately expressed, and the orthodontic bracket correcting effect is enhanced.

Specifically, the inner side wall of the flip 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 flip cover, so that the positioner is prevented from falling off. And set up positioning scale and axis mark line in flip's inside wall, when using, conveniently watch, after the use, flip closes, even positioning scale and the axis mark line that bright coating drawn, do not influence pleasing to the eye yet, even positioning scale and the axis mark line that arch or recess were made, do not produce exposed pit line and remain food waste yet.

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.

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

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of opening a lid.

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

Fig. 3 is a schematic structural diagram of another view angle of embodiment 1 of opening the flip.

Fig. 4 is a schematic structural diagram of embodiment 1 of closing the flip.

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

Fig. 6 is a schematic structural diagram of the flip cover.

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

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

Fig. 9 is a schematic structural diagram of embodiment 2 of closing the flip.

Fig. 10 is a longitudinal sectional view of embodiment 2 in a state where the flip 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 flip-type orthodontic bracket with a changeable archwire slot of the 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 a limit mechanism, in which the bolt 151 and the spring 155, which are driving members of the limit mechanism, are disposed in the bracket body 10, and the push plate 153 is disposed in the archwire slot 13. The drive member drivingly engages the push plate 153 such that the push plate 153, i.e., the push plate 153, moves in the gingival-jaw direction within the archwire slot 13, and the push plate 153 reduces the amount of movement of the archwire by taking up some of the space within the archwire slot 13, i.e., limiting the archwire receiving space within 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 protrusion 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 protrusion 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 other embodiments, in order to simplify the structure, the limiting mechanism comprises a connecting rod and a push plate, one end of the connecting rod is fixedly connected with the rotating pin, and the other end of the connecting rod is fixedly connected with the push plate.

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 151.

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 changeable arch wire slot flip type orthodontic bracket of the embodiment 2 comprises a bracket body 410, a flip 420 and a bottom 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 driving 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, the flip 420 is linked with the limit mechanism while the flip 420 is rotated to open or close the archwire slot 413, wherein the push block 4151, the spring 4155 and the return spring 4157, which are driving members of the limit mechanism, are disposed in the bracket body 410, and the push plate 4153 is disposed in the archwire slot 413. The drive member drivingly engages the push plate 4153 such that the push plate 4153 moves within the archwire slot 413 in the gingival-mandibular direction, the push plate 4153 reducing the amount of movement of the archwire by taking up some 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 420, the protrusion 424 of the flip 420 does not enter the receiving cavity 4123, and the push block 4151 is away from the gingival side wall of the receiving cavity 4123 by the urging of the return spring 4157, and the push block 4151 pulls the spring 4155 to pull the push plate 4153 adjacent 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.

When the flip 420 is moved from the fully opened state to the fully closed state, the protrusions 424 of the inner sidewall of the flip 420 gradually enter the accommodating chamber 4123, and the protrusions 424 contact the inclined surface of the push block 4151 and push the inclined surface, so that the push block 4151 pushes the spring 4155, thereby moving the push plate 4153 in the archwire slot 413 in the jaw-gingival direction. 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. 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 420 is moved from the fully closed state to the fully opened state, the protrusion 424 of the flip 420 gradually moves away from the receiving cavity 4123, the force of the protrusion 424 on the push block 4151 is lost, the return spring 4157 exerts an elastic force against the push block 4151 to move in the gingival-jaw direction, the push block 4151 pulls the push plate 4153 in the archwire slot 413 in the gingival-jaw direction by the spring 4155, and when the protrusion 424 is completely removed from 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 adjacent to 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.

The limiting mechanism and the corresponding protrusion 424 of the flip 420 of this embodiment 2 are arranged in a mirror image manner with respect to the arch wire groove 413, and can achieve the same technical effect.

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. The utility model provides a changeable flip formula orthodontic bracket in archwire groove which characterized in that: the bracket comprises a bracket main body and a flip cover, wherein the bracket main body is provided with an arch wire groove and a limiting mechanism, the limiting mechanism comprises a driving member and a push plate, and the push plate is arranged in the arch wire groove; the pivot part of the flip is in transmission connection with the driving member, and the driving member is in transmission connection with the push plate; when the turning cover closes the arch wire groove, the driving component is linked by the turning cover to drive the push plate to reduce the arch wire accommodating space of the arch wire groove; when the flip cover is opened, the driving component is linked by the flip cover to drive the push plate to recover the arch wire accommodating space of the arch wire groove.

2. The changeable flip style orthodontic bracket of claim 1, wherein: the driving component drives the push plate to move towards the gingival jaw direction in the arch wire groove.

3. The changeable flip style orthodontic bracket of claim 1, wherein: the driving member is a connecting rod; the pivot part of the flip cover comprises a rotating pin and a shaft sleeve which is arranged in an involute structure, the shaft sleeve is fixedly connected with the body of the flip cover, the shaft sleeve is sleeved with the rotating pin, two ends of the rotating pin are movably connected with the bracket main body, and the rotating pin can move in the gingival jaw direction; the rotating pin is in transmission connection with one end of the connecting rod, and the other end of the connecting rod is in transmission connection with the push plate.

4. The changeable flip style orthodontic bracket of claim 1, wherein: the driving member comprises a bolt and a spring, and the push plate is also provided with an internal thread sleeve; the pivot part of the flip cover comprises a rotating pin and a shaft sleeve which is arranged in an involute structure, the shaft sleeve is fixedly connected with the body of the flip cover, the shaft sleeve is sleeved with the rotating pin, two ends of the rotating pin are movably connected with the bracket main body, and the rotating pin can move in the gingival jaw direction; the rotating pin is in transmission connection with the head of the bolt, and 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 rotating pin.

5. The changeable flip style orthodontic bracket of claim 4, wherein: the bolt is radially provided with a limiting protrusion, and the limiting protrusion is in contact with or far away from the rotating pin by adjusting the connection depth of the bolt and the internal thread sleeve, so that the limiting mechanism is adjusted to be elastically supported or rigidly supported.

6. The changeable flip style orthodontic bracket of claim 1, wherein: the driving member is a connecting rod; the pivot part of the flip cover comprises a shaft sleeve and a rotating shaft, wherein any structure of the shaft sleeve and the rotating shaft is provided with an eccentric wheel, the structure provided with the eccentric wheel is fixedly connected with the flip cover body, and the other structure is fixedly connected with the bracket main body; the eccentric structure movably supports against one end of the connecting rod, and the other end of the connecting rod is in transmission connection with the push plate.

7. The changeable flip style 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.

8. The changeable flip style 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.

9. The changeable flip style orthodontic bracket of claim 2, wherein: the push plate is arranged on one side wall of the arch wire groove, and the other side wall of the arch wire groove is provided with an elastic piece and/or a sliding part.

10. The changeable flip style orthodontic bracket of claim 2, wherein: one surface of the push plate corresponding to the arch wire is provided with a sliding part for reducing the friction between the arch wire and the limiting mechanism.

11. The changeable flip style orthodontic bracket of claim 1, wherein: the inner side wall of the turnover cover is provided with a pressing piece, and the pressing piece corresponds to the arch wire groove.

12. The changeable flip style orthodontic bracket of claim 1, wherein: the inner side wall of the flip cover is provided with a positioning scale and/or an axis inclination identification line.