CN112315600B

CN112315600B - Orthodontic bracket with changeable archwire slot

Info

Publication number: CN112315600B
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: 2024-05-28
Anticipated expiration: 2039-07-17
Also published as: CN112315600A

Abstract

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

Description

Orthodontic bracket with changeable archwire slot

Technical Field

The invention relates to the field of tooth orthodontic treatment equipment, in particular to an orthodontic bracket with a changeable archwire slot.

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 elastic archwires are commonly used to connect brackets for applying forces to the teeth toward the desired position for an extended period of time.

However, there is a general problem with existing orthodontic brackets: the archwire size is typically smaller than the archwire slot size, and the goal of such a design is to facilitate the insertion and removal of archwires into and out of the archwire slot, otherwise full-sized archwires are difficult to enter/exit the slot; the size of the arch wire is smaller than that of the arch wire groove, and a clearance is inevitably reserved between the inner wall of the arch wire groove and the arch wire, so that accurate expression of preset data of the bracket is directly influenced, and the treatment course and effect are influenced.

Solutions to the technical problem are proposed in several patents or patent applications.

The Chinese patent application CN201910135621.3 discloses an orthodontic time-sharing self-locking bracket, which is provided with an elastic pressing plate, and the elastic pressing plate is used for eliminating the gap between an arch wire and a bracket groove. However, in order for the spring pressure plate to enter the second operating state, the thick archwire needs to press against the spring pressure plate and the inner wall of the archwire slot, which will inevitably cause pressure and damage to the teeth and the bracket itself, and the spring pressure plate in the second operating state has elastic potential energy, which the applicant believes has the hidden trouble of ejecting the thick archwire out of the archwire slot.

The inventor's prior Chinese patent application CN201810406247.1 discloses a stop bracket and a use method thereof, which is provided with an adjusting mechanism and an adjusting plate, and the adjusting mechanism drives the adjusting plate to adjust the size of the archwire slot. But the patent application adds structural components and correspondingly adds operating steps to the existing brackets: after the archwire is installed and the cover body is closed, the purpose of adjusting the size of the archwire slot can be achieved only by precisely screwing the fine adjusting mechanism by using the special tool. Not only increases the difficulty of the operation, but also prolongs the operation time, and brings inconvenience to doctors and patients.

Furthermore, chinese patent application 201810580106.1 discloses a novel corrective bracket, which is provided with a concave groove and a roller positioned in the concave groove at the position of the archwire groove, and a spring is arranged between the concave groove and the roller, so that the size of the archwire groove is smaller than that of a square wire in a normal state through the spring, and the square wire can be tightly placed in the archwire groove only by deforming the spring through extruding the roller when the square wire is placed in the archwire groove. This patent application requires that the square wire be extruded into the archwire slot by a roller which will inevitably cause pressure and damage to both the teeth and the bracket itself. Furthermore, the continuous pressing of the spring plate makes the archwire inconvenient to take out. That is, the patent application also has the technical problem of inconvenience in putting in or taking out the archwire. Moreover, the patent only works effectively with archwire sizes greater than the roller spacing (effective slot size) and fails with archwire sizes less than the spacing (effective slot size).

Therefore, there is no orthodontic bracket that reasonably solves the above technical problems.

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 problems is as follows: an orthodontic bracket with a changeable archwire slot comprises a bracket main body and a cover body, wherein the bracket main body is provided with the archwire slot and a limiting mechanism, the limiting mechanism is linked with the cover body, and when the cover body closes the archwire slot, the limiting mechanism reduces the archwire accommodating space of the archwire slot; when the cover body is opened, the limiting mechanism restores the archwire accommodating space of the archwire slot.

Compared with the prior art, the method has the following positive effects: according to the invention, the limiting mechanism is arranged, the cover body drives the limiting mechanism to adjust the arch wire accommodating space of the arch wire groove, when the cover body is closed, the limiting mechanism reduces the arch wire accommodating space in the arch wire groove, reduces the clearance of the arch wire groove, ensures the accurate torque expression of the arch wire, enhances the correction effect of the orthodontic bracket, and when the cover body is opened, the arch wire groove restores the arch wire accommodating space with the original size, so that enough space is available for placing or taking out the arch wire;

1. compared with the prior art that an elastic pressing plate or an adjusting mechanism is used, the invention is provided with the linkage type limiting mechanism, the limiting mechanism moves along with the opening and closing of the cover body, and no extra operation is needed for doctors, so that on one hand, the operation steps are simplified, the operation time is shortened, and on the other hand, compared with the qualitative adjustment like the elastic pressing plate, the invention can more accurately and quantitatively adjust the limiting amplitude of the archwire accommodating space of the archwire slot by setting the motion parameters of the limiting mechanism in advance;

2. Compared with the structure of the elastic sheet elastic narrowing arch wire groove in advance, the invention realizes the switching of two states through the cover body linkage, when the arch wire groove is opened, the arch wire groove restores the original enough arch wire accommodating space, thereby facilitating the putting in and taking out of the arch wire and avoiding the damage to the bracket and the damage to the teeth caused by the stress on the bracket and the teeth;

3. compared with other technical schemes that only the inner side wall of the cover body is provided with a propping structure, the corresponding propping structure is used for propping the arch wire when the cover body is covered, the invention does not set the implementation part of main acting force, namely the limiting mechanism, on the cover body, but on the bracket main body, and the cover body mainly bears the function of starting the limiting member, thereby effectively avoiding the risk of loosening the cover body in the covering state.

Further, the spacing mechanism includes a drive member and a spacer member disposed within the archwire slot; the cover body is in transmission connection with the driving member, the driving member is in transmission connection with the occupying member, and the driving member is linked by the opening and closing of the cover body to drive the occupying member to move in the arch wire groove towards the gingival jaw direction. The cover body is transmitted to the driving member, the driving member is transmitted to the occupying member, and the cover body pushes the occupying member to occupy a position in the archwire slot through the driving member, so that the size of the archwire accommodating space is limited. The driving member is arranged, so that uneven stress caused by direct acting of the cover body on the occupying member is effectively avoided, and the potential risk of loosening of the cover body caused by the reaction force of the occupying member on the cover body is also effectively avoided.

Specifically, the driving member is embedded in the bracket main 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 driving component is embedded, so that the edge angle of the orthodontic bracket is effectively reduced, the damage to the oral cavity of a user is avoided, and the shape of the orthodontic bracket is not different from that of a conventional bracket. And the driving component is linked by connecting the inner side wall of the cover body or the pivoting part of the cover body.

Specifically, an elastic piece is arranged in the limiting mechanism and/or the arch wire groove and is used for elastically limiting the arch wire accommodating space of the arch wire groove. In view of the restriction of the wire receiving space of the wire slot, a counteracting force of the wire against the wire slot, i.e. the limiting mechanism, will be created, whereby an elastic element is provided, cushioning the counteracting force of the wire.

Specifically, sliding components are arranged in the archwire slot and are used for reducing friction between the archwire and the archwire slot. In view of the restriction of the archwire receiving space of the archwire slot, friction between the archwire and the archwire slot will be increased, and therefore sliding members are provided to change static friction into dynamic friction, reducing friction induced damage to the archwire and brackets.

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

Specifically, a sliding part is arranged on one surface of the occupying member, which corresponds to the arch wire, and is used for reducing friction between the arch wire and the limiting mechanism. The sliding component is arranged on the occupying component, so that friction between the occupying component and the archwire is reduced.

Further, the inner side wall of the cover body is provided with a pressing piece, and the pressing piece corresponds to the archwire groove. The abutting piece is used as a limiting mechanism with an auxiliary effect to limit the arch wire accommodating space of the arch wire groove, so that the clearance of the arch wire groove is further reduced. Moreover, the corresponding space occupying component moves towards the gingival and jaw directions in the arch wire groove, and the abutting piece is limited in the labial and lingual directions corresponding to the arch wire, so that the space occupying component acts together with the abutting piece to limit the arch wire in the direction of intersecting 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.

Specifically, the space occupying member is a push plate. The push plate is equal in length with the side wall of the archwire slot, so that the occupying member can comprehensively limit the archwire in the archwire slot.

Further, the cover body is a flip cover, a sliding cover or a spiral cover; the cover body is in transmission connection with the driving component, so that the driving component moves in the gingival and jaw direction; the space occupying member is arranged on the side wall of the archwire slot, and the driving member is in transmission connection with the space occupying member, so that the space occupying member 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 axial inclination identification line; the outer side wall of the sliding cover or the spiral cover is provided with a positioning scale and/or an axial inclination marking line. Compared with an externally connected bracket positioner, the positioning scale and the shaft inclination mark line are arranged on the cover body, so that the falling-off of the positioner is avoided. And set up positioning scale and axle in flip's inside wall with the marking line that inclines, when using, conveniently watch, after using, the lid is closed, even positioning scale and the marking line that inclines of bright coating drawing also do not influence pleasing to the eye, even positioning scale and the marking line that inclines of axle that protruding or recess were made do not also produce exposed pit line and remain food residue.

Specifically, the driving component comprises a bolt and a spring, the space occupying component is a push plate, and the push plate is provided with an internal thread sleeve; the pivoting part of the flip cover drives the head part of the connecting 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 props against the push plate, and the other end of the spring props against the pivoting part. The driving member is connected to the pivoting part of the cover body, so that the cover body rotates to be opened and closed, and meanwhile, the linkage driving member drives the occupied member to move in the gingival and jaw direction, and the movement direction of the pivoting part is different from that of the occupied member, so that the cover body is prevented from loosening due to the reaction force of the occupied member, and the cover body is prevented from being opened in an correcting state.

Further, a limit key is arranged in the middle of the bolt, and the limit key abuts against the pivoting part through 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 piece is a pressing piece, a spring piece, a pressure spring or a bolt.

An orthodontic bracket with a changeable archwire slot comprises a bracket main body and a cover body, wherein the bracket main body is provided with the archwire slot and a limiting mechanism, and at least one limiting mechanism is respectively arranged on two sides of the archwire slot; 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 archwire accommodating space of the archwire slot.

Specifically, the cover body is a flip cover, a sliding cover or a spiral cover; the space occupying member is arranged on the side wall of the archwire slot.

The invention is further described below with reference to the drawings and examples.

Drawings

Fig. 1 is a schematic structural view of embodiment 1 of the opening cover.

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

Fig. 3 is a schematic structural view of embodiment 1 of the opening cover at another view angle.

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

Fig. 5 is a longitudinal sectional view of embodiment 1 in a state of closing the lid.

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

Fig. 7 is a schematic structural view of embodiment 2 of the opening cover.

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 the closing lid.

Fig. 10 is a longitudinal sectional view of embodiment 2 in a state of closing the lid.

Fig. 11 is a schematic structural view of embodiment 3 of the opening cover.

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

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

Fig. 14 is a longitudinal sectional view of embodiment 3 in a state of closing the lid.

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

Fig. 16 is a front view of the special-shaped column of example 3.

Fig. 17 is a schematic structural view of embodiment 4 of the opening cover.

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 of the closing lid.

Fig. 20 is a longitudinal sectional view of embodiment 4 in a state of closing the lid.

Fig. 21 is a schematic structural view of embodiment 5 of the opening cover.

Fig. 22 is a longitudinal sectional view of embodiment 5 in a state where the lid body is opened.

Fig. 23 is a transverse sectional view of embodiment 5 in a state where the lid body is opened.

Fig. 24 is a schematic structural view of embodiment 5 of the closing lid.

FIG. 25 is a longitudinal sectional view of example 5 in a state of closing the lid

Fig. 26 is a transverse sectional view of embodiment 5 in a state of closing the lid.

Fig. 27 is a schematic structural view of embodiment 6 of the opening cover.

Fig. 28 is a longitudinal sectional view of example 6 in a state where the lid is opened.

Fig. 29 is a schematic structural view of embodiment 6 of the closing lid.

Fig. 30 is a longitudinal sectional view of embodiment 6 in a state of closing the lid.

Detailed Description

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

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

And in the description of the direction, such as the labial and lingual direction, is generally referred to as bi-directional. The term "labial-lingual direction" refers to a single direction, i.e., a direction from the labial side to the lingual side.

The arch wire groove refers to a groove used for placing an arch wire on the orthodontic bracket, a cover body is arranged above the arch wire groove in the general case, 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 the two opposite arch wire grooves connected with the edges 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 surface of the orthodontic bracket is the occlusal side wall of the archwire slot.

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

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

Furthermore, the components and spaces described below are also described with reference to the mandibular teeth reference system, such as the gingival side wall of a cavity, the occlusal surface of a component, etc., but are not limited thereto.

Example 1

As shown in fig. 1 to 6, the variable orthodontic bracket of the archwire slot of the present embodiment 1 includes a bracket body 10, a flip cover 20, and a base plate 30. A 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 limiting mechanism and a sliding member, and the archwire slot 13 bisects the bracket body 10, including a first bracket wing 11 protruding in the jaw-gingival direction and a second bracket wing 12 protruding in the gingival-jaw direction.

Wherein the middle part of the gingival surface of the first bracket wing 11 is concaved inwards to form a receiving groove 113, and the receiving groove 113 accommodates the pivoting part of the flip cover 20. The settling surface of the receiving tank 113 is the bottom surface 1132 of the receiving tank 113. Both ends of the receiving groove 113 in the proximal-distal direction are closed by both ends of the first bracket wing 11, namely, both end side walls 1134 of the receiving groove 113. The second bracket wing 12 is provided with a snap fit location 121 that mates with the flip cover 20.

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

The pivoting part of embodiment 1 includes two concentric shaft sleeves 213 and a rotation pin 215, and a clearance space for a limiting mechanism is left between the two shaft sleeves 213. The rotation pin 215 sequentially penetrates through the two shaft sleeves 213 of the flip cover 20, and two ends of the rotation pin 215 respectively abut against two end side walls of the receiving groove 113. So that the flip cover 20 rotates about the rotation pin 215. The two ends of the rotation pin 215 are not fixedly connected with the two end side walls 1134 of the receiving groove 113, but the rotation pin 215 moves in the receiving groove 113 in a limited way through the limiting action of the limiting mechanism. The shaft of the rotation pin 215 corresponding to the avoidance space is provided with a pin hole 2150 for connecting a limit mechanism.

The shaft sleeve 213 of the flip cover 20 is 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 boss 213 contacting the bottom surface 1132 of the receiving groove 113 is an opening point 2135, the opening point 2135 is away from the axis 2131 of the shaft hole, and the distance between the opening point 2135 and the axis 2131 is L2. When the lid 20 is completely closed, the portion of the boss 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 shaft hole, and the distance between the closing point 2137 and the axial center 2131 is L1. Then, the movement limit of the rotation pin 215 is L2 to L1 in the opening and closing process of the lid 20 by the pushing force of the bottom surface 1132 of the receiving groove 113.

The limiting mechanism includes a bolt 151, a push plate 153 and a spring 155. The push plate 153 is connected with an internal thread bushing 157, and the push plate 153 is screwed with the bolt 151 through the internal thread bushing 157.

The first bracket wing 11 is provided with a through slot 115 for receiving a limiting mechanism, the through slot 115 communicating 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 limiting mechanism penetrates the pin hole 2150 of the rotation pin 215 and the through groove 115 in sequence, and then is connected with the internal thread sleeve 157 of the push plate 153, and the plate surface of the push plate 153 is arranged on the gingival side wall 136 of the archwire slot 13. The head of the bolt 151 is engaged with the pin hole 2150, and the end of the bolt 151 is screwed 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 rotating pin 215.

The working principle of example 1 is:

In general, while the flip cover 20 is rotated to open or close the archwire slot 13, the flip cover 20 is linked to a limiting mechanism, wherein the bolt 151 and the spring 155 are the driving members of the limiting mechanism, disposed within the bracket body 10, and the push plate 153 is the occupying member, disposed within the archwire slot 13. The drive member drivingly connects the displacement member such that the displacement member, i.e., the push plate 153, moves within the archwire slot 13 in the gingival and jaw direction, the push plate 153 reduces the space for movement of the archwire by occupying a portion 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 state where the lid 20 is fully opened, 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 bracket wing 11, and the boss 213 pulls the rotation pin 215 at a limit position away from the bottom surface 1132 of the receiving groove 113. The bolt 151 is also pulled by the rotation pin 215 to the limit position of the pull-out through groove 115, and the push plate 153 is pulled by the bolt 151 to the limit position of the gingival surface of the archwire slot 13. This embodiment 1 is sized such that the push plate 153 is just against the gingival of the archwire slot 13 at this point in time with the bolt 151. Then, in the state where the flip cover 20 is fully opened, the wire receiving space of the wire slot 13 is maximized.

When the folder 20 moves from the fully opened state to the fully closed state, the boss 213 of the folder 20 rotates around the rotation pin 215 in the receiving groove 113, that is, rotates in an involute track, and the closing point 2137 of the boss 213 gradually moves toward the bottom surface 1132 of the receiving groove 113. The partial force pushing the flap 20 closed acts on the pivoting part of the flap 20 pushing the rotation pin 215 to move in a direction close to the bottom surface 1132 of the receiving slot 113, i.e. in a gingival-jaw direction, the movement limit being L2-L1. The spring 155 is also moved in the gingival-jaw direction by the rotational pin 215, with the limit of movement being L2-L1. The push plate 153 approaches the occlusal side wall 138 of the archwire slot 13 by the limit of movement L2-L1, i.e., the push plate 153 pushes from the gingival side wall 136 of the archwire slot 13 toward the occlusal side wall 138, in conjunction with the spring 155 moving in the gingival-jaw direction. Until the flip cover 20 is completely closed, the buckling position 121 of the bracket main body 10 is designed, so that when the buckling position 121 is matched and butted with the buckling part 23 of the flip cover 20, the closing point 2137 of the shaft sleeve 213 is correspondingly abutted against the bottom surface 1132 of the receiving groove 113. Thereby realizing the closing of the flip cover 20, the push plate 153 of the linkage limiting mechanism occupies the arch wire accommodating space of the arch wire slot 13 and limits the arch wire in the gingival and jaw directions. The clearance of the archwire slot 13 is reduced as the active space of the archwire within the archwire slot 13 is reduced, enabling the archwire to accurately express torque.

When the folder 20 moves from the fully closed state to the fully opened state, the boss 213 of the folder 20 rotates around the rotation pin 215 in the receiving groove 113, that is, rotates in an involute track, and the opening point 2135 of the boss 213 gradually moves toward the bottom surface 1132 of the receiving groove 113. The rotation pin 215 is gradually moved away from the bottom surface 1132 of the receiving groove 113, i.e., toward the jaw-gum direction, by the eccentric urging of the boss 213, with a movement limit of L2-L1. The bolt 151 is also moved in the jaw-gum direction by the linkage of the rotation pin 215 in the jaw-gum direction, with the movement limit being L2-L1. By the linkage of the movement of the bolt 151 in the jaw-gingival direction, the push plate 153 closes against the gingival side wall 136 of the archwire slot 13, with a movement limit of L2-L1, i.e., the push plate 153 closes against the gingival side wall 136 of the archwire slot 13. Thereby realize opening flip 20 simultaneously, push pedal 153 reduces the occupation effect to archwire slot 13, and the archwire accommodation space of archwire slot 13 resumes original size, avoids push pedal 153 to lead to the fact the oppression to the archwire, conveniently presss from both sides and gets the archwire.

In this embodiment 1, the sliding member is a plurality of rollers 171, the rollers 171 are movably engaged with the engagement side walls 138 of the archwire slot 13, and the rollers 171 and the push plate 153 sandwich the archwire, thereby reducing the friction force problem between the archwire and the archwire slot 13 caused by the narrowing of the archwire slot 13. In other embodiments, the roller 171 may be replaced with any relatively slidable member such as a ball or track, thereby changing the static friction to the dynamic friction to reduce the friction. Furthermore, in other embodiments, the sliding member may be provided on the push plate 153 of the spacing mechanism, or on both the push plate 153 of the spacing mechanism and the bite side wall 138 of the archwire slot 13.

In this embodiment 1, one of the purposes of the setting of the limiting mechanism by the spring 155 is that the spring 155 can increase the elastic deformation of the limiting mechanism, so that when the push plate 153 abuts against the archwire, the damage of the limiting mechanism can be avoided by the deformation of the spring 155 when the force of the archwire is excessively large. Moreover, the spring 155 of the spacing mechanism cooperates with the sliding member to combine the spring action with the dynamic friction action to further reduce the friction effects of the archwire with the archwire slot 13. In other embodiments, a resilient member, including but not limited to a spring 155 or a dome, is provided on the occlusal side wall 138 of the archwire slot 13. In other embodiments, a sliding member is provided on the engagement side wall 138 of the archwire slot 13, and a resilient member is provided between the sliding member and the engagement side wall 138 of the archwire slot 13 to resiliently urge the archwire by resiliently urging the sliding member against.

Another purpose of the positioning mechanism of the spring 155 in this embodiment 1 is to narrow the archwire width by pushing the push plate 153 by the pivot pin 215 pushing the spring 155 during the closing of the flip cover 20. The head of the bolt 151 is engaged with the pin hole 2150, and the push plate 153 is not biased during the process of closing the flip cover 20, and the bolt 151 is biased during the process of opening the flip cover 20. In other embodiments, the bolt 151 is not provided, the pivot pin 215 is not provided with a pin hole 2150, but rather, one end of the spring 155 is connected to the push plate 153, and the other end is connected to the pivot pin 215, and when the flip cover 20 is opened and closed, the spring 155 applies force in two opposite directions, so that the push plate 153 reciprocates in the gingival and jaw directions, which is an elastic compression archwire. In other embodiments, the limiting mechanism is not provided with a spring 155, but a limiting key 159 is arranged in 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 process of the flip 20, and the rotating pin 215 drives the limiting mechanism by pushing the limiting key 159 during the closing process of the flip 20, which is a rigid compression archwire.

In 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 connection depth of the bolt 151 and the sleeve 157 is reduced, and the length of the limiting mechanism is increased, and when the limiting protrusion 159 just abuts against the rotating pin 215 in the state that the flip 20 is completely opened, when the flip 20 is closed, the rotating pin pushes the push plate instead of pushing the spring, but the rotating pin pushes the push plate by pushing the limiting protrusion 159, when the resistance from the arch wire is received, the push plate cannot move in the gingival and jaw direction due to the action of the limiting protrusion abutting against the rotating pin, the buffer space is lost, and the elastic compression arch wire is converted into the rigid compression arch wire.

In this embodiment 1, the inner side wall of the flip cover 20 is provided with a positioning scale 27 and an axis inclination identification line 28. The general bracket is externally connected with an axial inclination marking line 28 and a positioning scale 27 so as to facilitate the bonding and positioning of doctors. In this embodiment 1, the positioning scale 27 and the axis tilt identification line 28 are directly disposed on the inner side wall of the flip cover 20, which is integrated and simplified, so that the problem that the axis tilt identification line 28 in the prior art is easy to fall off is avoided. In addition, the positioning scale 27 and the axis inclination mark line 28 of the embodiment 1 use bright colors, which are convenient for doctors to recognize, and the beauty of the users is not affected when the flip cover 20 is covered.

In this embodiment 1, at least two elastic pressing pieces are connected to the inner side wall of the flip cover 20, and the elastic pressing pieces are memory metal pieces with radians. The resilient tabs are disposed on either side of the flip cover 20 in the mesial-distal direction and abut against the archwire in the archwire slot 13 when the flip cover 20 closes the archwire slot 13. The elastic pressing sheet is combined with the push plate 153 of the limiting mechanism to limit the arch wire in the labial and lingual directions and in the gingival and jaw directions, namely, the movable space of the arch wire in the arch wire slot 13 is further limited, namely, the arch wire accommodating space in the arch wire slot 13 is limited, then, the clearance of the arch wire slot 13 is further reduced, and the precise expression torque of the arch wire is realized. The resilient compression members may be replaced with other compression members 25 that provide compression to the archwire in the labial-lingual direction, including but not limited to compression blocks, compression springs and bolts.

In other embodiments, the bottom 134 of the archwire slot 13 is provided with a sliding member corresponding to the abutment 25 provided on the flip cover 20, i.e., the bottom 134 of the archwire slot 13 may be provided with rollers 171, 171 or tracks to reduce friction in the direction of the archwire lips.

In other embodiments, the pivot portion includes two bushings fixedly connected within the receiving channel of the first bracket wing and a swivel shaft with an eccentric. The rotating shaft is fixedly connected with the turning cover, two ends of the rotating shaft are respectively arranged in the shaft sleeve, the turning cover drives the rotating shaft to rotate in the shaft sleeve, the rotating 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 includes a link and a tension spring, one end of the link is connected to the push plate, and the other end of the link is in contact with the eccentric wheel. The tension spring is connected with the push plate or the connecting rod. When the flip is opened, the protruding portion of the eccentric does not press the connecting rod, and under the action of the pressing force of the eccentric, the tension spring pulls the push plate to the side wall of the gingiva of the archwire slot. In the closing process of the flip cover, the protruding part of the eccentric wheel gradually abuts against the connecting rod and is transmitted to the push plate to move towards the occlusion side wall of the archwire slot, and meanwhile, the pulling force of the tension spring is resisted. Or the pivot part comprises a rotating shaft and two shaft sleeves with eccentric wheels, the shaft sleeves are fixedly connected with the turning cover, two ends of the rotating shaft respectively penetrate through bearing grooves of the shaft sleeves and then are fixedly connected with the first bracket wings, the turning cover drives the shaft sleeves to rotate around the rotating shaft, the shaft sleeves are provided with the eccentric wheels, and the eccentric wheels are propped 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 stable to open and close.

In this embodiment 1, the archwire slot 13 is provided with a recess for receiving the push plate 153 such that when the flip cover 20 is opened, the plate surface of the push plate 153 is flush with the gingival sidewall 136 of the archwire slot 13, facilitating entry and egress of an archwire into and out of the archwire slot 13. In other embodiments, the grooves may not be provided.

Example 2

As shown in fig. 7 to 10, the variable orthodontic bracket of the archwire slot of the present embodiment 2 includes a bracket body 410, a flip cover 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 limiting mechanism, the archwire slot 413 bisecting the bracket body 410, including a first bracket wing 411 protruding toward the gingiva-gingival direction and a second bracket wing 412 protruding toward the gingiva-gingival direction.

Wherein the middle of the gingival surface of the first bracket wing 411 is concaved inward to form a receiving groove that receives the pivot portion 421 of the flip cover 420. The second bracket wing 412 is provided with a snap-fit location 4121 and a receiving cavity 4123 for receiving a spacing mechanism. The locking portion 4121 mates with the locking portion 423 of the locking flip 420. The receiving cavity 4123 is provided with two openings, including a first opening 4124 located on the labial side of the bracket body 410 and a second opening 4126 in communication with the bite side wall 4138 of the archwire slot 413.

The flip cover 420 is provided with a pivot portion 421 and a catching portion 423. The pivot portion 421 of the flip cover 420 is movably disposed in the receiving groove, and the flip cover 420 rotates about the pivot portion 421 to be movably connected to the bracket body 410. The pivot portion 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 bracket wing 411. The locking portion 423 of the flip cover 420 is matched with the locking portion 4121 of the bracket body 410. The flip cap 420 is used to open and close the archwire slot 413. The bottom 4134 of the archwire slot corresponds to the inner side wall of the flip cover.

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

The spacing mechanism includes a push block 4151, a spring 4155, a push plate 4153 and a return spring 4157, the push block 4151, spring 4155 and return spring 4157 being disposed within the receiving chamber 4123 with the push plate 4153 being disposed on the occlusal side of the archwire slot 413. The labial side of the push block 4151 is a bevel which slopes downward in the gingiva-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 housing cavity 4123, and the return spring 4157 positions the inclined surface of the push block 4151 at a position when the boss 424 of the flip cover 420 enters the housing cavity 4123.

The working principle of example 2 is:

In general, while the flip cover 420 is rotated to open or close the archwire slot 413, the flip cover 420 is linked to a spacing mechanism, wherein the push block 4151, spring 4155 and return spring 4157 are the drive members of the spacing mechanism, disposed within the bracket body 410, and the push plate 4153 is the spacer member, disposed within the archwire slot 413. The drive member drivingly connects the displacement member such that the displacement member, push plate 4153, moves within the archwire slot 413 in the gingival and jaw direction, the push plate 4153 reduces the space available for archwires by occupying a portion of the space within the archwire slot 413, i.e., limiting the space available for archwire receiving within the archwire slot 413. The present invention achieves the objective 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 far away from the gingival sidewall of the accommodating cavity 4123 under the abutment action of the return spring 4157, and the push block 4151 is at the first position. The push block 4151 pulls the spring 4155 and thereby pulls the push plate 4153 against the bite side wall 4138 of the archwire slot 413. Then, in the fully opened state of the flip cover 420, the wire receiving space of the wire slot 413 is maximized.

When the flip cover 420 moves from the fully open position to the fully closed position, the protrusion 424 on the inner side wall of the flip cover 420 gradually enters the accommodating cavity 4123, the protrusion 424 contacts the inclined surface of the push block 4151 and pushes the inclined surface, so that the push block 4151 pushes the spring 4155, and the push plate 4153 is driven to leave the first position and move in the jaw-gum direction in the archwire slot 413. That is, the push plate 4153 pushes from the occlusal side wall 4138 of the archwire slot 413 toward the gingival side wall 4136. Until the flip cap 420 is closed, at which time the push block 4151 is positioned closer to the gingival sidewall of the receiving cavity 4123 relative to the first position, at which time the push block 4151 is in the second position, the second position being closer to the archwire slot than the first position. Thereby realizing the closing of the flip cover 420, the push plate 4153 of the linkage limiting mechanism occupies the arch wire accommodating space of the arch wire groove 413 and limits the arch wire in the gingival and jaw directions. The active space of the archwire within the archwire slot 413 is reduced and then the clearance of the archwire slot 413 is reduced, enabling the archwire to accurately express torque.

When the flip cover 420 moves from the fully closed state to the fully opened state, the protrusion 424 of the flip cover 420 gradually leaves the accommodating cavity 4123, the acting force of the protrusion 424 on the pushing block 4151 is lost, the restoring spring 4157 applies elastic force to push the pushing block 4151 to move in the gingiva-jaw direction, and the pushing block 4151 moves from the second position to the first position. The push block 4151 pulls the push plate 4153 in a gingival-jaw direction within the archwire slot 413 by the spring 4155. When the tab 424 is completely 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 abutment with the occlusal side wall 4138 of the archwire slot 413. Thereby realizing that when the flip 420 is opened, the push plate 4153 reduces the occupying effect on the archwire slot 413, the archwire accommodating space of the archwire slot 413 is restored to the original size, the push plate 4153 is prevented from pressing the archwire, and the archwire is convenient to clamp.

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

In embodiment 2, by providing the return spring 4157 between the gingival surface of the push block 4151 and the inner wall of the housing cavity 4123, the push block 4151 is brought into a state away from the archwire slot 413 when not pushed by the boss 424, and is moved in a direction away from the archwire slot 413 when the push block 4151 loses the pushing action of the boss 424, and at this time the return spring 4157 is a compression spring. 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 chamber 4123, where the return spring 4157 is a tension spring. In other embodiments, the return spring 4157 may be replaced with other elastic members including, but not limited to, rubber bands or arcuate resilient metal sheets.

As can be seen from the above description, in other embodiments, the space 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 a bar integrally, 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 refined structure.

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

As can be seen from example 2, the drive member converts the force of the downward abutment of the inner side wall of the flip cover into a force in the gingival and jaw direction pushing the push plate to reduce the archwire receiving space of the archwire slot. Therefore, the limiting mechanism and the protrusion 424 of the corresponding flip cover 420 of the present embodiment 2 are disposed in a mirror-image manner with respect to the archwire slot 413, and the same technical effects can be achieved. Or otherwise, similar structures are also contemplated by the present invention.

Example 3

As shown in fig. 11 to 16, the variable orthodontic bracket of the archwire slot of the present embodiment 3 includes a bracket body 510, a sliding 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 limiting mechanism, the archwire slot 513 bisecting the bracket body 510, including a first bracket wing 511 protruding in the jaw-to-gum direction and a second bracket wing 512 protruding in the gum-to-jaw direction.

The side surface of the lip of the first bracket wing 511 is provided with a receiving groove 5113 for accommodating the sliding cover 520 and an accommodating cavity 5115 for accommodating the limiting mechanism. The two sides of the receiving groove 5113 are respectively provided with a sliding rail which is matched and connected with the sliding cover 520 in a sliding manner. The bottom surface of the receiving groove 5113 is partially concave to form a receiving cavity 5115, and an opening of the receiving cavity 5115 corresponds to the inner side wall of the sliding cover 520. The baffle 5117 between the receiving cavity 5115 and the archwire slot 513 is recessed in a labial-lingual direction with the top surface of the baffle 5117 being lower than the labial side of the first bracket wing 511 and the top surface of the baffle 5117 being higher than the bottom 5134 of the archwire slot 513.

The sliding cover 520 is movably connected with the bracket body 510, and the sliding cover 520 is used for opening and closing the archwire slot 513. The inner side wall of the sliding cover 520 is provided with a limit groove 523 in the gingival closing 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 spacing mechanism includes a profiled post 5151 and a push plate 5153, the profiled post 5151 being disposed in the receiving cavity 5115 and the push plate 5153 being disposed within the archwire slot 513. The push plate 5153 is an L-shaped plate, one surface of the push plate 5153 is arranged on the gingival side wall 5136 of the archwire slot 513, the other surface of the push plate 5153 is hung on the top surface of the retaining wall 5117, and the hanging surface of the push plate 5153 is provided with a hole 5152 or a slot for connecting the special-shaped column 5151.

The special-shaped column 5151 comprises a base 5154 and four elastic split columns, wherein two split columns form a group of locking split columns 5156, the locking split columns 5156 are connected with a limit groove 523 of the sliding cover 520, the tail end of the locking split column 5156 is bent in the near-far direction under the action of the limit groove 523, and the locking split columns 5156 are used for controlling the opening and closing locking of the sliding cover 520. The locking mechanism of the locking sub-column 5156 and the sliding cover 520 is a prior art, and is not described herein. The other two split heads are limit split columns 5157, and the limit split columns 5157 obliquely extend from the accommodating cavity 5115 to the arch wire groove 513 across the top surface of the retaining wall 5117 and enter the limit groove 523. The tail end of the limiting sub-column 5157 abuts against the blocking part 525 of the limiting groove 523, the tail end of the limiting sub-column 5157 is bent in the gingival and jaw direction under the acting force of the blocking part 525 of the limiting groove 523, and the limiting sub-column 5157 drives the push plate 5153 to move in the gingival and jaw direction through the hole 5152 or the slot connected with the push plate 5153.

The working principle of example 3 is:

In general, while pushing the slider 520 to open or close the archwire slot 513, the slider 520 is linked to a stop mechanism, wherein the profiled post 5151 is a driving member of the stop mechanism, disposed within the bracket body 510, and the push plate 5153 is a space occupying member, disposed within the archwire slot 513. The drive member drivingly connects the displacement member such that the displacement member, push plate 5153, moves within the archwire slot 513 in the gingival and jaw direction, the push plate 5153 reduces the space 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 purpose of adjusting the archwire receiving space of the archwire slot 513.

Specifically, in the state that the sliding cover 520 is completely opened, the blocking portion 525 of the sliding cover 520 presses the limiting post 5157 to deform, so as to reduce or even lose the inclination angle. The push plate 5153 tightens against the jaw-gingiva against the gingival sidewall 5136 of the archwire slot 513 under the influence of the deformation of the limit post 5157. Then, in the state where the sliding cover 520 is completely opened, the wire receiving space of the wire slot 513 is maximized.

When the sliding cover 520 moves from the fully opened state to the fully closed state, the limit groove 523 of the sliding cover 520 moves toward the gingiva-jaw direction, the force applied by the blocking portion 525 to the limit post 5157 is weakened, and the limit post 5157 gradually returns to an inclined angle, so that the push plate 5153 is pushed to move toward the gingiva-jaw direction, the push plate 5153 approaches the engagement side wall 5138 of the archwire slot, and the push plate 5153 occupies the archwire accommodating space of the archwire slot 513. And when the cover is covered with the sliding cover 520, the push plate 5153 of the limiting mechanism reduces the width of the arch wire groove 513, limits the movement space of the arch wire in the arch wire groove 513 in the gingival and jaw direction, namely, limits the arch wire accommodating space in the arch wire groove 513, and reduces the clearance of the arch wire groove 513 under the condition that the movement space of the arch wire is reduced, so that the precise 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 limit groove 523 of the sliding cover 520 moves toward the jaw-gum direction, the force applied by the blocking portion 525 to the limit post 5157 is gradually increased, and the limit post 5157 gradually decreases or even loses the inclination angle, thereby pulling the push plate 5153 to move toward the jaw-gum direction. And when the sliding cover 520 is opened, the push plate 5153 reduces the occupying effect on the archwire slot 513, and the archwire accommodating space of the archwire slot 513 is restored to the original size, so that the push plate 5153 is prevented from pressing the archwire, and the archwire is convenient to clamp.

Because the limit posts 5157 are resilient members, the push plate 5153 has a resilient buffer space when the archwire applies excessive force to the push plate 5153.

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

In this embodiment 3, the dysmorphism post is equipped with and ends the lock and divide the post and spacing branch post, ends the combination of lock branch post and basal portion and be the conventional setting of current orthodontic bracket, on the basis of current design, increases a set of spacing branch post on the basal portion for it unifies to end two kinds of functional parts of lock and adjustment archwire groove size, has both simplified the processing degree of difficulty and operation step, still compresses the cavity space of archwire groove to a great extent, improves the integration. In other embodiments, the locking elastic member and the limiting elastic member may be respectively set up, where the locking elastic member includes a first base portion and a locking sub-column, and the limiting elastic member includes a second base portion and a limiting sub-column, where the locking elastic member and the limiting elastic member may be disposed in the same accommodating cavity, or may be disposed in different accommodating cavities, respectively. Neither will affect the functional implementation of the two.

In this embodiment 3, the limiting groove has both a locking function and a limiting function, and can be connected with the locking sub-column in a matching manner and also connected with the limiting sub-column in a matching manner. The functional principle is that the inner side wall of the sliding cover is provided with a groove, and the locking separation column is limited by the groove in the near-far middle direction to lock the sliding cover in an opening state and a closing state in the sliding process of the locking elastic piece in the groove. The limiting elastic piece for adjusting the size of the arch wire groove is different and is limited by the groove in the gingival and jaw direction to drive the push plate in the sliding process of the groove. Because the action positions of the grooves on the two grooves are different, two functions can be realized in the same groove.

In other embodiments, a locking groove and a limiting groove may be respectively set on the inner side wall of the sliding cover, and the two grooves are not mutually communicated. The function realization of the two is not affected.

In this embodiment 3, the limiting post is inclined toward the side wall of the archwire slot in a normal state, that is, when the sliding cover closes the archwire slot, the limiting post is not pressed by the limiting slot of the sliding cover, and only when the sliding cover opens the archwire slot, the limiting post is forced by the blocking part of the limiting slot to generate elastic deformation. The reason for this is that the normal or permanent state of the orthodontic bracket is a state of closing the archwire slot, and when closing, the sliding cover should be kept as free from external force as possible in order to avoid opening the sliding cover. Therefore, the limiting split column is set to generate resistance with the sliding cover only when the sliding cover is opened, so that the sliding cover in the correction process can be greatly prevented from being accidentally opened, and the correction effect is ensured.

However, in other embodiments, if it is ensured that the sliding cover is not easy to open accidentally during the correction process, the limiting post may be set to be in a normal upright state. When the sliding cover closes the arch wire groove, the limiting branch column is subjected to the force application of the inner side wall of the sliding cover to generate elastic deformation, the pushing 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 limiting branch column, the limiting branch column gradually restores to an upright state, the pushing plate is pulled back to the side wall of the arch wire groove, and the arch wire accommodating space of the arch wire groove is restored.

Furthermore, in embodiment 3, when the sliding cover completely closes the archwire slot, the sliding cover and the limiting post do not generate any force at all, for the same reason, in order to avoid the sliding cover from being opened accidentally. However, in other embodiments, if it is ensured that the sliding cover is not easy to open accidentally during the correction process, it may be configured such that when the sliding cover completely closes the archwire slot, a certain resistance remains between the sliding cover and the limiting post, but is insufficient to push the sliding cover open accidentally.

Example 4

As shown in fig. 17 to 20, the archwire slot 613 of the present embodiment 4 is a variable orthodontic bracket including a bracket body 610, a sliding 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 limiting mechanism, the archwire slot 613 bisecting the bracket body 610, including a first bracket wing 611 protruding in the jaw-to-gum direction and a second bracket wing 612 protruding in the gum-to-jaw direction.

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

The slider 620 is movably coupled to the bracket body 610, and the slider 620 is used to open and close the archwire slot 613. The slider 620 overlays the second bracket wing 612 at the front edge of the slider 620 when the archwire slot 613 is closed and the slider 620 closes at least partially closing the receiving cavity 6123. The bottom 6134 of the archwire slot corresponds to the inside wall of the sliding cover.

The limiting mechanism comprises an angle code 6151, a spring 6155, a push plate 6153 and a return spring 6157, wherein 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 archwire groove 613. The corner 6156 of the corner bracket 6151 is movably connected with the inner wall of the accommodating cavity 6123, so that the corner bracket 6151 can rotate the two arms by taking the corner 6156 as a fulcrum. One arm of the angle code 6151 is connected with a return spring 6157, the arm is a driving arm of the angle code 6151, the driving arm protrudes out of the first opening 6124 of the accommodating cavity 6123 under the elastic action of the return spring 6157, and the driving arm is pressed down by the covered sliding cover 620 to rotate the angle code 6151. The other arm of the angle code 6151 is connected with the push plate 6153 in a transmission way through a spring 6155, the spring 6155 penetrates through the second opening 6126, and the arm is a driven arm of the angle code 6151.

The working principle of example 4 is:

In general, while pushing the slider 620 to open or close the archwire slot 613, the slider 620 is linked to a stop mechanism, wherein the horn 6151, the spring 6155, and the return spring 6157 are driving members of the stop mechanism, disposed within the bracket body 610, and the push plate 6153 is a space occupying member, disposed within the archwire slot 613. The drive member drivingly connects the displacement member such that the displacement member, push plate 6153, moves within the archwire slot 613 in the gingival and jaw direction, the push plate 6153 reduces the space for movement of the archwire by occupying a portion of the space within the archwire slot 613, i.e., limiting the archwire receiving space within the archwire slot 613. The present invention achieves the purpose of adjusting the archwire receiving space of the archwire slot 613.

Specifically, in a state where the slide cover 620 is completely opened, the return spring 6157 pushes up the driving arm of the horn 6151 out of the first opening 6124 of the accommodating cavity 6123. Correspondingly, the follower arm of the horn 6151 is pulled by the driving arm to close to the engagement side wall of the receiving chamber 6123. The follower arm pulls the push plate 6153 against the bite side wall 6138 of the archwire slot 613 through the spring 6155. Then, in the state where the sliding cover 620 is completely opened, the wire receiving space of the wire groove 613 is maximized.

When the slider 620 moves from the fully opened state to the fully closed state, the slider 620 gradually closes the receiving cavity 6123 of the second bracket wing 612, and the slider 620 presses down the driving arm of the horn 6151 and the return spring 6157. The driving arm rotates around the corner 6156 of the corner bracket 6151 in the process of being pressed down, and then the driven arm rotates and approaches to the side wall of the gingiva of the accommodating cavity 6123, the driven arm pushes the push plate 6153 to move in the jaw-gingiva direction in the archwire groove 613 through the spring 6155, and the push plate 6153 occupies the archwire accommodating space of the archwire groove 613. Therefore, when the sliding cover 620 is covered, the push plate 6153 of the limiting mechanism reduces the width of the arch wire groove 613, limits the movement space of the arch wire in the arch wire groove 613 in the gingival jaw direction, namely, limits the arch wire accommodating space in the arch wire groove 613, and reduces the clearance of the arch wire groove 613 under the condition that the movement space of the arch wire is reduced, so that the precise 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 pushing action of the sliding cover 620 on the corner code 6151 is lost, and the elastic deformation of the return spring 6157 converts the elastic potential energy into the kinetic energy to resist the corner code 6151, so that the corner code 6151 reversely rotates relative to the closing state of the sliding cover 620. The follower arm of the horn 6151 again moves away from the gingival side wall of the receiving cavity 6123 and the push plate 6153 also moves in the gingiva-jaw direction within the archwire slot 613, the push plate 6153 returning to the occlusal side wall 6138 of the archwire slot 613. Thereby realizing that when opening the sliding cover 620, the push plate 6153 is far away from the side wall 6136 of the gingiva of the archwire groove 613, the push plate 6153 reduces the occupying effect on the archwire groove 613, the archwire accommodating space of the archwire groove 613 is restored to the original size, the push plate 6153 is prevented from pressing the archwire, and the archwire is convenient to clamp.

In this embodiment 4, the corner connector 6151 is connected with 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 is subjected to excessive force of the arch wire, the damage of the limit mechanism can be avoided through elastic deformation. In other embodiments, spring 6155 may be replaced with other connecting structures including, but not limited to, links to achieve a rigid connection.

In this embodiment 4, by disposing the return spring 6157 between the driving arm of the corner connector 6151 and the inner wall of the accommodating cavity 6123, the corner connector 6151 is in a state protruding out of the first opening 6124 of the accommodating cavity 6123 when the corner connector 6151 is not subjected to the pushing force of the sliding cover 620, and is reset when the corner connector 6151 loses the pushing 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 actuation arm of the horn 6151 and the second bracket wing 612 outside of the receiving chamber 6123, where the return spring 6157 is a tension spring. Alternatively, in other embodiments, return spring 6157 is coupled to the follower arm of horn 6151 simultaneously with spring 6155. In other embodiments, the return spring 6157 may be replaced with other resilient members including, but not limited to, rubber bands or arcuate resilient metal sheets.

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

Furthermore, the limiting mechanism of embodiment 4 can be applied to a flip bracket, and the same technical effects can be achieved.

In addition, the limiting mechanism of embodiment 4 may be disposed in a mirror image with respect to the archwire slot 613, and the limiting mechanism may be disposed on the first bracket wing 611, so as to achieve the same technical effect.

Example 5

As shown in fig. 21 to 26, the variable orthodontic bracket of the archwire slot of the present 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 limiting mechanism, the archwire slot 713 bisecting the bracket body 710, including a first bracket wing 711 projecting in the jaw-to-gum direction and a second bracket wing 712 projecting in the gum-to-jaw direction.

Wherein the middle part of the labial surface of the first bracket tab 711 is concaved inward to form a receiving cavity 7113, and the receiving cavity 7113 receives the pivoting part of the screw cap 720. The bracket wing 712 is provided with a snap-fit location 7121 that mates with the screw cap 720.

The screw cap 720 is provided with a pivoting portion and a buckling portion 723. The pivoting portion of the rotating cover 720 is movably disposed in the accommodating cavity 7113, and the rotating cover 720 rotates with the pivoting portion as a fulcrum to be movably connected to the bracket body 710. The snap-fit portion 723 of the screw cap 720 mates with the snap-fit portion 7121 of the 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 rotation shaft 721 and a sleeve with a shaft hole 722, the sleeve is disposed on the inner side wall of the screw cap 720, the shaft hole 722 is the shaft in the direction of the lip tongue, and the rotation shaft 721 is fixedly connected in the accommodating cavity 7113 in the direction of the lip tongue. The shaft hole 722 of the sleeve is sleeved with the rotating shaft 721 so that the rotating cover 720 rotates around the rotating shaft 721 to open or close the archwire slot 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 sleeve 7151 is received in the receiving chamber 7113, and the sleeve 7151 is in driving connection with the sleeve of the screw cap 720. In embodiment 5, the sleeve 7151 with the protrusion 7158 is preferably integrally formed with the sleeve of the cap 720, thereby simplifying the processing process. The shaft sleeve 7151 with the protrusion 7158 is sleeved on the rotation shaft 721, and the shaft sleeve 7151 is driven by the sleeve to rotate around the rotation shaft 721, and the protrusion 7158 of the shaft sleeve 7151 and the buckling part 723 of the rotation cover 720 are arranged in the same direction. The push plate 7153 is attached to the gingival side wall 7136 of the archwire slot 713 within the archwire slot 713 under the force of the return spring 7157. The push plate 7153 attached to the gingival side wall 7136 of the archwire slot 713 is within the range of motion of the boss 7158 of the boss 7151. The return spring 7157 is disposed embedded within the gingival sidewall 7136 of the archwire slot 713.

The working principle of example 5 is:

In general, the screw cap 720 is interlocked with a limit mechanism while the screw cap 720 is rotated to open or close the archwire slot 713, wherein a shaft sleeve 7151 with a protrusion 7158 and a return spring 7157 are driving members of the limit mechanism, which are disposed in the bracket body 710, and a push plate 7153 is a space occupying member, which is disposed in the archwire slot 713. The drive member drivingly connects the displacement member such that the displacement member, push plate 7153, moves within the archwire slot 713 in the gingival and jaw direction, the push plate 7153 reduces the space 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 achieves the objective of adjusting the archwire receiving space of the archwire slot 713.

Specifically, when the cap 720 is completely opened, the engaging portion 723 of the cap 720 is separated from the bracket body 710, and accordingly, the protrusion 7158 of the boss 7151 of the stopper mechanism is also separated from the archwire groove 713, and the push plate 7153 is brought into close contact with the gingival side surface of the archwire groove 713 by the biasing force of the return spring 7157 alone. Then, in the state where the screw cap 720 is completely opened, the wire receiving space of the wire slot 713 is maximized.

When the screw cap 720 is moved from the fully open to the fully closed, the sleeve of the screw cap 720 rotates about the screw axis 721 within the receiving cavity 7113, the protrusion 7158 of the sleeve 7151 also rotates 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 pushes from the gingival side wall 7136 of the archwire slot 713 toward the occlusal side wall 7138. Thereby realizing the closing of the spiral cover 720, 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 and jaw directions. The clearance of the archwire slot 713 is reduced as the active space of the archwire within the archwire slot 713 is reduced, enabling precise torque expression by the archwire.

When the screw cap 720 moves from fully closed to fully open, the protrusion 7158 of the sleeve 7151 rotates 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 toward the gingival side wall 7136 of the archwire slot 713, i.e., the push plate 7153 is folded over the gingival side wall 7136 of the archwire slot 713. Thereby realizing that the push plate 7153 reduces the occupying effect on the archwire slot 713 while opening the spiral cover 720, the archwire accommodating space of the archwire slot 713 is restored to the original size, the push plate 7153 is prevented from pressing the archwire, and the archwire is convenient to clamp.

In other embodiments, the boss 7151 with the boss 7158 may be provided separately from the sleeve of the 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 rotation of the sleeve drives the shaft sleeve 7151 to rotate. Or the shaft sleeve 7151 and the sleeve are respectively and independently connected on the rotating shaft 721 in series, and the upper shaft surface of the shaft sleeve 7151 is clamped with the lower shaft surface of the sleeve, so that the rotation of the sleeve can drive the shaft sleeve 7151 to rotate.

In other embodiments, the boss 7151 with the boss 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 receiving the push plate 7153 can be applied to embodiment 5.

Example 6

As shown in fig. 27 to 30, the variable orthodontic bracket of the archwire slot of the present example 6 includes a bracket body 810, a screw cap 820, and a base plate. A base plate is provided 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, the archwire slot 813 bisecting the bracket body 810 and including a first bracket wing 811 projecting in the jaw-to-gum direction and a second bracket wing 812 projecting in the gum-to-jaw direction.

Wherein the middle part of the lip side surface of the first bracket wing 811 is concaved inward to form a first receiving chamber 8113, and the first receiving chamber 8113 receives the pivoting part of the screw cap 820. The second bracket wing 812 is provided with a second receiving cavity 8123 for placement of a spacing mechanism and a snap fit location 8121 for mating with the screw cap 820. The second receiving cavity 8123 is provided with two openings, including a first opening located on the labial side of the bracket body 810 and a second opening in communication with the bite side wall 8138 of the archwire slot 813.

The screw cap 820 is provided with a pivoting portion and a fastening portion 823. The pivot portion of the rotary cover 820 is movably disposed in the first receiving cavity 8113, and the rotary cover 820 is movably connected to the bracket body 810 by rotating about the pivot portion as a fulcrum. The snap 823 of the screw cap 820 mates with the snap fit position 8121 of the attachment bracket body 810. A screw cap 820 is used to open and close the archwire slot 813.

The pivoting part of embodiment 6 includes a rotating shaft 821 and a sleeve with an axle hole 822, the sleeve is disposed on the inner side wall of the rotating cap 820, the axle hole 822 is an axle in the direction of the lip tongue, and the rotating shaft 821 is fixedly connected in the first receiving cavity 8113 in the direction of the lip tongue as well. The sleeve shaft hole 822 is sleeved with the rotary shaft 821 so that the rotary cover 820 rotates around the rotary shaft 821 as a shaft to open or close the archwire slot 813.

The spacing mechanism includes an elastic transmission member 8151, a push plate 8153 and a return spring 8157, the elastic transmission member 8151 and the return spring 8157 are disposed within the second receiving cavity 8123, and the push plate 8153 is disposed on the bite side wall 8138 of the archwire slot 813. The elastic transmission member 8151 is a special-shaped member made of elastic metal, and comprises a driving arm and a driven arm, wherein one end of the driving arm and one end of the driven arm are connected with each other, and the connecting part 8158 is movably connected with the inner wall of the second accommodating cavity 8123, so that the elastic transmission member 8151 can rotate the two arms by taking the connecting part 8158 as a fulcrum. The driving arm of the elastic transmission member 8151 is connected to the return spring 8157, the driving arm protrudes out of the first opening of the second accommodating cavity 8123 under the elastic action of the return spring 8157, and the driving arm is pressed down by the capped screw cap 820 to rotate the elastic transmission member 8151. The push plate 8153 is provided with a connecting rod, the driven arm of the corner brace is connected with the push plate 8153 through the transmission of the connecting rod, and the connecting rod penetrates through the second opening.

The working principle of example 6 is:

In general, the screw cap 820 is linked with a limit mechanism while the screw cap 820 is rotated to open or close the archwire slot 813, wherein the elastic transmission member 8151 and the return spring 8157 are driving members of the limit mechanism, disposed in the bracket body 810, and the push plate 8153 is a space occupying member, disposed in the archwire slot 813. The drive member drivingly connects the displacement member such that the displacement member, push plate 8153, moves within the archwire slot 813 in the gingival and jaw direction, the push plate 8153 reduces the space available for archwires 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 objective of adjusting the archwire receiving space of the archwire slot 813.

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

When the screw cap 820 moves from the full opening to the full closing, the screw cap 820 gradually closes the second receiving cavity 8123 of the second bracket wing 812, and the screw cap 820 presses down the driving arm of the elastic transmission 8151 and the return spring 8157. The driving arm rotates about the junction 8158 of the resilient transmission 8151 during depression, whereupon the driven arm rotates and approaches the gingival side wall of the second receiving cavity 8123, the driven arm pushes the push plate 8153 through the connecting rod to move in the jaw-gingival direction within the archwire slot 813, the push plate 8153 occupying the archwire receiving space of the archwire slot 813. Therefore, when the cover is covered and the spiral cover 820 is covered, the push plate 8153 of the limiting mechanism enables the width of the arch wire groove 813 to be reduced, limiting is carried out on the arch wire in the gingival and jaw direction, namely, the movable space of the arch wire in the arch wire groove 813 is limited, namely, the arch wire accommodating space in the arch wire groove 813 is limited, and under the condition that the movable space of the arch wire is reduced, the clearance of the arch wire groove 813 is reduced, so that the accurate expression torque of the arch wire is realized.

When the screw cap 820 moves from the fully closed state to the fully opened state, the screw cap 820 gradually opens the second accommodating cavity 8123, the pressing action of the screw cap 820 on the elastic transmission member 8151 is lost, the elastic deformation of the return spring 8157 converts elastic potential energy into kinetic energy to abut against the driving arm of the elastic transmission member 8151, and the elastic transmission member 8151 reversely rotates relative to the time of closing the screw cap 820. The driven arm of the resilient transmission 8151 again moves away from the gingival side wall of the second receiving cavity 8123, and the push plate 8153 also moves within the archwire slot 813 in a gingival-jaw direction, the push plate 8153 returning to the occlusal side wall 8138 of the archwire slot 813. Thereby, when the spiral cover 820 is opened, the push plate 8153 reduces the occupying effect on the arch wire groove 813, the arch wire accommodating space of the arch wire groove 813 is restored to the original size, the push plate 8153 is prevented from pressing the arch wire, and the arch wire is convenient to clamp.

In this embodiment 6, the driven arm of the elastic transmission member 8151 is connected with the link of the push plate 8153, so that the limit of the push plate 8153 to the archwire is elastic limit, and when the push plate 8153 abuts against the archwire and receives an excessive force of the archwire, the damage of the limit mechanism can be avoided through elastic deformation.

In other embodiments, the return spring 8157 may be replaced with other elastic members including, but not limited to, rubber bands, arcuate elastic metal sheets, or elastic transmission 8151 similar to that of embodiment 6.

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

Further, as can be seen from the above embodiments, the spacing mechanisms can be provided on either side of the archwire slot and are understood to be independent of each other. The invention may also be modified from the above-described embodiments. Such as: the limiting mechanisms of the embodiment 2 are respectively arranged at two sides of the archwire slot in a mirror image mode, and two protrusions are arranged on the inner side face of the flip cover correspondingly, so that when the flip cover is closed, the archwire accommodating space of the archwire slot can be reduced at two side walls of the archwire slot.

For another example, in embodiment 4 where the spacing mechanism is provided in embodiment 3, when the slider is closed, both side walls of the archwire slot can be made to reduce the archwire receiving space of the archwire slot.

For another example, in providing the spacing mechanism of embodiment 6 in embodiment 5, when the screw cap is closed, both side walls of the archwire slot can be made to reduce the archwire receiving space of the archwire slot.

For setting up stop gear respectively in the both sides of archwire groove for the both sides wall of archwire groove all reduces the archwire accommodation space of archwire groove, not just two unilateral spacing simple addition. Instead, it is contemplated that prior art techniques have all adhered brackets to the center point of the dental axis, and unilaterally reduced the wire receiving space of the archwire slot, which tends to shift the axis of the archwire. The axis of the arch wire deviates to the occlusal side wall of the arch wire groove or to the gingival side wall of the arch wire groove, so that the acting force of the arch wire relative to the corrected teeth is changed, namely, the axis of the arch wire deviates to the occlusal side wall of the arch wire groove, the axis of the arch wire is close to the occlusal surface of the teeth, and the correction force of the arch wire at the moment is larger than that of the arch wire at the midpoint of the tooth axis; conversely, the axis of the archwire is biased toward the gingival side wall of the archwire slot, and the archwire will now have less force than the archwire at the midpoint of the axis. And the arch wire accommodating space of the arch wire groove is reduced on the same step distance on both sides, which is helpful for maintaining the arch wire at the midpoint of the tooth axis without deviating, and ensures that the correction force of the arch wire is proper.

The present invention is not limited to the above-described embodiments, but, if various modifications or variations of the present invention are not departing from the spirit and scope of the present invention, the present invention is intended to include such modifications and variations as fall within the scope of the claims and the equivalents thereof.

Claims

1. An orthodontic bracket with a variable archwire slot, characterized by: the bracket 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, the limiting mechanism is linked with the cover body, the limiting mechanism comprises a driving component and a space occupying component, the space occupying component is arranged in the arch wire groove, and the driving component is embedded in the bracket main body; the cover body is in transmission connection with the driving member to enable the driving member to move in the gingival and jaw directions, the driving member is in transmission connection with the occupying member, and the driving member is linked by the opening and closing of the cover body to drive the occupying member to move in the gingival and jaw directions in the archwire slot; 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 archwire accommodating space of the archwire slot.

2. The archwire slot-changeable orthodontic bracket of claim 1, wherein: the driving member is connected to an inner sidewall of the cover or a pivoting portion of the cover.

3. The archwire slot-changeable orthodontic bracket of claim 1, wherein: an elastic piece is arranged in the limiting mechanism and/or the arch wire groove and is used for elastically limiting the arch wire accommodating space of the arch wire groove.

4. The archwire slot-changeable orthodontic bracket of claim 1, wherein: the sliding part is arranged in the arch wire groove and is used for reducing friction between the arch wire and the arch wire groove.

5. The archwire slot-changeable orthodontic bracket of claim 1, wherein: the spacer member is disposed on one side wall of the archwire slot and the other side wall of the archwire slot is provided with a resilient member and/or a sliding member.

6. The archwire slot-changeable orthodontic bracket of claim 1, wherein: the one side of the occupying component corresponding to the arch wire is provided with a sliding part for reducing friction between the arch wire and the limiting mechanism.

7. The archwire slot-changeable orthodontic bracket of any one of claims 1-6, wherein: the inner side wall of the cover body is provided with a pressing piece which corresponds to the archwire slot.

8. The archwire slot-changeable orthodontic bracket of claim 1, wherein: the cover body is a flip cover, a sliding cover or a spiral cover; the space occupying member is arranged on the side wall of the archwire slot.

9. The archwire slot-changeable orthodontic bracket of claim 8, wherein: the inner side wall of the flip cover is provided with a positioning scale and/or an axial inclination identification line; the outer side wall of the sliding cover or the spiral cover is provided with a positioning scale and/or an axial inclination marking line.

10. An archwire slot variable orthodontic bracket as in claim 3 or 5, wherein: the elastic piece is a spring or a metal elastic sheet.

11. An archwire slot variable orthodontic bracket as in claim 4 or 5, wherein: the sliding component is a roller or a ball or a track.

12. The archwire slot-changeable orthodontic bracket of claim 7, wherein: the pressing piece is a pressing block, a spring piece, a pressure spring or a bolt.