CN111759496A - Self-ligating bracket - Google Patents

Abstract

The application discloses self-ligating bracket, be in including the net end and setting the base on the net end holds in the palm, the archwire groove has been seted up on the base, the base holds in the palm and is provided with the holding surface in one side at the net end dorsad, rotate on the holding surface and install the cover plate, when the cover plate rotates and the mode that gradually advances seals or opens the archwire groove. The technical scheme that this application discloses realizes closing or opening of arch wire groove through rotatable cover plate to progressive mode is closed or open mode reliability is high, avoids the easy jamming problem of cover plate of pull formula among the correlation technique simultaneously, has good market prospect.

Description

self-locking bracket

technical field

The present application relates to the field of orthodontics, in particular to self-locking brackets.

Background technique

In addition to the active and passive integrated snap-reed self-locking structure and the flip structure, the existing self-locking bracket structure mainly consists of a pull-out passive self-locking structure orthodontic bracket. For example, CN109310486A discloses a self-locking bracket whose cover body can be rotated. However, the self-locking bracket of the flip structure is less reliable, and the cover may open unexpectedly when the arch wire is subjected to a large force.

Therefore, more than 90% of the orthodontic brackets with the pull-out passive self-locking structure are used clinically. However, during the clinical use of this type of orthodontic bracket with a passive self-locking structure, repeated pulling will easily lead to a certain proportion of the cover sheet being loosened or stuck.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present application discloses a self-locking bracket, comprising a net bottom and a base set on the net bottom, the base is provided with an arch wire slot, and the base is facing away from One side of the mesh bottom is provided with a support surface, a cover sheet is rotatably installed on the support surface, and the cover sheet is rotated to close or open the archwire slot in a progressive manner.

Several optional methods are also provided below, which are not intended to be additional limitations on the above-mentioned overall solution, but are merely further additions or optimizations. On the premise of no technical or logical contradiction, each optional method can be independently implemented for the above-mentioned overall solution. The combination can also be a combination between multiple optional ways.

Optionally, the rotation plane on which the cover sheet is located is parallel to the extending direction of the archwire slot.

Optionally, the rotation axis of the cover sheet is perpendicular to the support surface.

Optionally, the rotation axis of the cover sheet is located on one side of the archwire slot.

Optionally, the cover sheet has a closed position for shielding the archwire slot and a release position for opening the archwire slot on the rotation path; the base is provided with ligation wings on both sides of the archwire slot, One side is the first ligation wing, and the other side is the second ligation wing;

The top of the first ligation wing is provided with a sinking area, the cover sheet is installed in the sinking area, the bottom surface of the sinking area is the supporting surface, and the cover sheet passes through the sinking area into the closed or released position.

Optionally, the cover sheet is provided with a rotating shaft connected to the base, the outer edge of the cover sheet is provided with a limiting strip, and the base is provided with a limiting groove matched with the limiting strip.

Optionally, the limit slot includes:

a guide groove, provided on the first ligation wing;

a positioning groove, arranged on the second ligation wing;

When the cover sheet is in the closed position, both the guide groove and the positioning groove are engaged with the limiting strip at the same time.

Optionally, one of the cover sheet and the base is provided with a locking tongue, and the other is provided with a locking hole. When the locking tongue and the locking hole are aligned, the cover sheet is opposite to the base. Tray lock.

Optionally, when the cover sheet is in the closed position, the first end engaging with the guide groove is the first end, and the second end engaging with the positioning groove, compared with the rotating shaft, the first end. The radial dimension of one end is greater than the radial dimension of the second end.

Optionally, when the cover sheet is in the closed position, the first end is engaged with the guide groove, and the second end is engaged with the positioning groove, and the cover sheet is in the release position, so the There is a gap between the guide groove and the first end.

Optionally, the side wall of the sinking area close to the rotation axis of the cover sheet includes:

a stop surface, the cover sheet is in the closed position, the cover sheet;

The avoidance surface, the cover sheet is in the release position, and the avoidance surface abuts against the stop surface.

The technical solution disclosed in the present application realizes the closing or opening of the archwire slot through the rotatable cover sheet, and the progressive closing or opening method is highly reliable, and at the same time avoids the easy jamming of the pull-out cover sheet in the related art. problem, with good market prospects.

Specific beneficial technical effects will be further explained in conjunction with specific structures or steps in the specific embodiments.

Description of drawings

1 is a schematic diagram of a self-locking bracket in an embodiment;

FIG. 2 is a schematic diagram of the mating relationship of the self-locking brackets in FIG. 1;

FIG. 3 is a schematic structural diagram of the self-locking bracket in FIG. 1 after the cover sheet is omitted;

4 to 6 are schematic diagrams of the states of the self-locking bracket cover in FIG. 1 after being rotated by a certain angle.

The reference numerals in the figure are explained as follows:

11, net bottom; 12, base; 121, arch wire slot; 122, support surface; 1221, keyhole; 123, first ligation wing; 1231, sinking area; 1232, stop surface; 1233, avoidance surface; 124, the second ligation wing; 1241, the engaging area; 125, the limit slot; 1251, the guide slot; 1252, the positioning slot;

2. Cover sheet; 21. Revolving shaft; 22. Limiting strip; 23. First end; 24. Second end; 25. Lock tongue.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

It should be noted that when a component is referred to as being "connected" to another component, it can be directly connected to the other component or an intervening component may also exist. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a co-existing centered component.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the present application are for the purpose of describing specific embodiments only, and are not intended to limit the present application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to FIGS. 1 to 6 , the present application discloses a self-locking bracket, which includes a net bottom 11 and a base 12 arranged on the net bottom 11 . The base 12 is provided with an arch wire slot 121 , and the base 12 is on the back. A support surface 122 is provided on one side of the mesh bottom 11 , and a cover piece 2 is rotatably mounted on the support surface 122 . When the cover piece 2 is rotated, the archwire slot 121 is closed or opened in a progressive manner.

The movement of the cover piece 2 is characterized by being able to close or open the archwire slot 121 in a progressive manner. Therefore, the movement of the cover piece 2 is significantly different from the flip-up locking piece in the related art. When the overturned cleat closes the archwire slot 121, the force of the arch wire on the cleat may be directed toward the direction of movement of the cleat, thereby reducing the reliability of the cleat. In this embodiment, the cover sheet 2 can close or open the archwire slot 121 in a progressive manner, so the force of the arch wire on the cover sheet 2 can be contained by the rotating shaft 21 of the cover sheet 2 , thereby improving the reliability of the cover sheet 2 . In principle, referring to an embodiment, the rotation plane where the cover sheet 2 is located is parallel to the extending direction of the archwire slot 121 . The rotation plane of the cover sheet 2 is determined by the rotating shaft 21. When the rotation plane is parallel to the extending direction of the archwire slot 121, the arch wire cannot generate a torque to drive the cover sheet 2 to rotate, so as to ensure the cover sheet 2 rotates. The reliability of closing the archwire slot 121. Correspondingly, in one embodiment, the rotation axis of the cover sheet 2 is perpendicular to the supporting surface 122 . The axis of rotation is actually provided by the axis of rotation 21 . When the axis of rotation is perpendicular to the support surface 122 , the support surface 122 can help the cover sheet 2 prevent the archwire from falling out of the archwire slot 121 and ensure the stability of the archwire in space.

The "parallel" and "perpendicular" mentioned above are geometric concepts understood in principle, and there may be slight deviations in actual products, but from a functional point of view, the above conditions should be met.

In terms of specific structure, referring to an embodiment, the cover sheet 2 has a closed position to shield the archwire slot 121 and a release position to open the archwire slot 121 on the rotation path; the base 12 is located on both sides of the archwire slot 121. ligation wings, one of which is the first ligation wing 123 and the other side is the second ligation wing 124;

The top of the first ligation wing 123 is provided with a sinking area 1231, the cover sheet 2 is installed in the sinking area 1231, the bottom surface of the sinking area 1231 is the supporting surface 122, and the cover sheet 2 enters the closed position through the sinking area 1231 (as shown in FIG. 1 ). ) or the release position (Figure 4).

The sunken area 1231 actually provides an installation space for the cover sheet 2, and can provide a structural basis for the leveling of the top of the self-locking bracket. The rotation path of the cover sheet 2 passes through the sinking area 1231 , which is similar to the traditional pull-out locking sheet, which can reduce the learning cost for operators such as clinicians and facilitate promotion. The rotation axis of the cover sheet 2 is the position of the rotation shaft 21 . In the drawings, the rotation shaft 21 is arranged on the support surface 122 . Correspondingly, the rotation axis of the cover sheet 2 is located on one side of the archwire slot 121 . Compared with other positions (for example, in the archwire slot 121), the rotating shaft 21 located on one side of the archwire slot 121 can provide a larger rotation range for the cover sheet 2, thereby realizing a larger opening and closing range, which is convenient for medical care. Operators and other operators operate on the arch wire to improve the treatment effect.

It can be understood that the cover sheet 2 shields the archwire slot 121 by rotating. Therefore, compared with the pull-type locking sheet, the closed area of the cover sheet 2 to the archwire slot 121 in this embodiment will change, but it will not change. Causes a reduction in the binding force on the archwire. When the arch wire is stressed, the cover piece 2 will be subjected to a larger moment at a position farther from the rotating shaft 21. Therefore, in one embodiment, the cover piece 2 is provided with a rotating shaft 21 connected to the base 12, and the cover piece 2 is provided with a rotating shaft 21 connected to the base 12. The outer edge of the sheet 2 is provided with a limiting strip 22 , and the base 12 is provided with a limiting groove 125 which is matched with the limiting strip 22 .

The engagement of the limiting grooves 125 and the fiber strips can help the rotating shaft 21 to fix the relative positions of the cover sheet 2 and the base 12 , so as to bear a larger torque to provide stability. In detail, the outer edge of the cover sheet 2 is an arc surface, and the limit bar 22 extends along the arc surface, so as to facilitate the cooperation with the limit groove 125 during the rotation process. The rotating shaft 21 itself can also be optimized accordingly. In one embodiment, the top end of the rotating shaft 21 is radially enlarged. In cross section, the rotating shaft 21 is T-shaped, and the enlarged part can restrain the moving tendency of the cover sheet 2 in the axial direction of the rotating shaft 21 , so that the cover sheet 2 can bear a larger acting moment.

Regarding the details of the limiting slot 125, referring to an embodiment, the limiting slot 125 includes:

The guide groove 1251 is arranged on the first ligation wing 123;

The positioning groove 1252 is arranged on the second ligation wing 124;

When the cover sheet 2 is in the closed position, both the guide groove 1251 and the positioning groove 1252 are engaged with the limit bar 22 at the same time.

The limit bar 22 is arranged on the cover sheet 2, and the rotation process of the cover sheet 2 will cross the archwire slot 121, so the limit slot 125 is divided into two sections respectively arranged on the first ligation wing 123 and the second ligation wing 124, This design can ensure that both sides of the archwire slot 121 are bound to the cover sheet 2 . On the first ligation wing 123, the cover sheet 2 is also constrained by the rotating shaft 21, so the guide groove 1251 also realizes the guidance of the cover sheet 2, and the matching gap between the guide groove 1251 and the limit bar 22 can be appropriately relaxed to avoid related In the technology, the pull-out cleats are easy to get stuck.

Further, the side of the second ligation wing 124 facing the archwire slot 121 is provided with an arc-shaped indented engaging area 1241 , and the positioning groove 1252 is arranged in the engaging area 1241 .

In order to reduce the size of the self-locking brackets on both sides of the archwire slot 121 , the cover sheet 2 can be extended to the second ligation wing 124 . Correspondingly, the second ligation wing 124 should avoid interference with the rotation of the cover sheet 2 .

Similarly, the cover sheet 2 can also be optimized accordingly. Referring to an embodiment, when the cover sheet 2 is in the closed position, the first end 23 engages with the guide groove 1251 , and the second end 24 engages with the positioning groove 1252 . Compared with the rotating shaft 21 , the first end The radial dimension of the portion 23 is greater than the radial dimension of the second end portion 24 .

In this embodiment, the cover sheet 2 is actually convex, and this design can reduce the size of the self-locking bracket on both sides of the archwire slot 121 and improve the adaptability of the self-locking bracket.

Correspondingly, in one embodiment, when the cover sheet 2 is in the closed position, the first end 23 is engaged with the guide groove 1251 , the second end 24 is engaged with the positioning groove 1252 , and the cover sheet 2 is in the release position. Below, there is a gap between the guide groove 1251 and the first end portion 23 .

The function of the cover sheet 2 is to close the archwire slot 121, so a corresponding positioning structure is required. Referring to an embodiment, one of the cover sheet 2 and the base 12 is provided with a locking tongue 25, and the other is provided with a locking hole 1221, the locking tongue 25 and the locking hole 1221 are aligned with the timing cover 2 and locked relative to the base 12.

The purpose of the lock tongue 25 is to prevent the relative movement of the cover sheet 2 and the base 12, so the technical solution shown in the figure realizes the locking and unlocking of the two through the vertical movement of the lock tongue 25 relative to the rotation plane of the cover sheet 2. The movement of 25 can be achieved by actual movement or by deformation of itself or the cover sheet 2 . Specifically, the locking tongue 25 is a positioning ball arranged on the cover sheet 2 , and the locking hole 1221 is arranged on the bottom surface of the sinking area 1231 . The locking hole 1221 can also be set as a ball socket in the illustrated scheme, so as to facilitate the situation that the cover sheet 2 needs to be moved to the release position.

The travel of the cover sheet 2 also needs to be limited. In one embodiment, the side wall of the sinking area 1231 close to the rotation axis of the cover sheet 2 includes:

The stop surface 1232, when the cover sheet 2 is in the closed position, the cover sheet 2 is in contact with the stop surface 1232;

With the avoidance surface 1233 , the cover sheet 2 is in the release position, and the cover sheet 2 is in contact with the avoidance surface 1233 .

Both the stop surface 1232 and the avoidance surface 1233 are disposed on the side wall of the sinking area 1231 , so in detail, the stop surface 1232 and the avoidance surface 1233 transition smoothly. In the illustrated solution, the avoidance surface 1233 is retracted relative to the stop surface 1232 to avoid interference with the cover sheet 2 . In an actual product, the cover sheet 2 can also be retracted to avoid interference between the two.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification. When the technical features of different embodiments are embodied in the same drawing, it can be considered that the drawing also discloses the combination examples of the various embodiments involved.

The above-mentioned embodiments only represent several embodiments of the present application, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the scope of the patent application. It should be pointed out that for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims (10)

1. The self-ligating bracket comprises a net bottom and a base arranged on the net bottom, wherein an arch wire groove is formed in the base.

2. The self-ligating bracket of claim 1, wherein the plane of rotation of the cover plate is parallel to the direction of extension of the archwire slot.

3. The self-ligating bracket of claim 1, wherein the axis of rotation of the cover plate is located to one side of the archwire slot.

4. The self-ligating bracket of claim 1, wherein the cover flap has a closed position in a rotational path that conceals the archwire slot and a released position that opens the archwire slot; the base support is provided with ligation wings at two sides of the arch wire groove, wherein a first ligation wing is arranged at one side, and a second ligation wing is arranged at the other side;

the top of the first binding wing is provided with a sinking area, the cover plate is installed in the sinking area, the bottom surface of the sinking area is the supporting surface, and the cover plate enters the closed position or the release position through the sinking area.

5. The self-ligating bracket of claim 4, wherein the cover plate is provided with a rotating shaft connected with the base, the outer edge of the cover plate is provided with a limiting strip, and the base is provided with a limiting groove matched with the limiting strip.

6. The self-ligating bracket of claim 5, wherein the retaining groove comprises:

the guide groove is arranged on the first binding wing;

a positioning slot disposed on the second tie wing;

the cover plate is located under the closed position, and the guide groove and the positioning groove are clamped with the limiting strip at the same time.

7. The self-ligating bracket of claim 1, wherein one of the cover and the base is provided with a locking tab and the other is provided with a locking hole, the cover being locked relative to the base when the locking tab is aligned with the locking hole.

8. The self-ligating bracket of claim 6, wherein the cover flap is engaged with the guide slot in the closed position by a first end portion, and the detent slot is engaged with a second end portion, the first end portion having a radial dimension greater than a radial dimension of the second end portion relative to the pivot axis.

9. The self-ligating bracket of claim 6, wherein the cover flap is engaged with the guide slot in a closed position by a first end and is engaged with the detent slot in a second end, and wherein the cover flap is in a released position by a gap between the guide slot and the first end.

10. The self-ligating bracket of claim 4, wherein the side wall of the countersink proximate the axis of rotation of the cover sheet comprises:

a stop surface, the flap in a closed position, the flap;

and the cover plate is positioned under the release position, and the avoiding surface is abutted against the stop surface.

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