阅读说明：本技术 圆管式自锁托槽 (Round tube type self-ligating bracket ) 是由 林全红 周王峰 连鑫 于 2021-08-11 设计创作，主要内容包括：本申请公开了一种圆管式自锁托槽,包括带有弓丝槽的基托、滑动安装在基托上的盖板,盖板具有封闭弓丝槽的关闭位置以及相应的开放位置；基托的顶面上开设有定位孔,盖板的底面上开设有导向槽,圆管式自锁托槽还包括插设在定位孔中的弹性件,弹性件的一端为与定位孔配合的固定端,另一端为延伸至导向槽内的工作端,其中至少工作端为中空结构；导向槽在盖板的滑动方向上曲线平滑延伸且依次分为：开放定位端；阻力段；关闭定位端。本申请公开的技术方案通过弹性件以及周围结构的设置,优化了盖板的锁定效果,提高了装配效率、改善盖片运动操作手感,对于生产装配、医疗使用以及患者的治疗效果都有积极意义。(The application discloses a circular tube type self-ligating bracket, which comprises a base with an arch wire groove and a cover plate slidably mounted on the base, wherein the cover plate is provided with a closed position for closing the arch wire groove and a corresponding open position; the circular tube type self-locking bracket also comprises an elastic piece inserted in the positioning hole, one end of the elastic piece is a fixed end matched with the positioning hole, the other end of the elastic piece is a working end extending into the guiding groove, and at least the working end is of a hollow structure; the guide way is in the smooth extension of the slip direction of apron curve and divide into in proper order: opening the positioning end; a resistance section; the positioning end is closed. The technical scheme that this application discloses through the setting of elastic component and structure on every side, has optimized the locking effect of apron, has improved assembly efficiency, has improved the cover plate motion operation and has felt, all has positive meaning to production assembly, medical use and patient's treatment.)

1. The round tube type self-ligating bracket comprises a base support with an arch wire groove and a cover plate which is installed on the base support in a sliding mode, wherein the cover plate is provided with a closed position for closing the arch wire groove and a corresponding open position; the circular tube type self-ligating bracket is characterized in that a positioning hole is formed in the top surface of the base support, a guide groove is formed in the bottom surface of the cover plate, the circular tube type self-ligating bracket further comprises an elastic piece inserted into the positioning hole, one end of the elastic piece is a fixed end matched with the positioning hole, the other end of the elastic piece is a working end extending into the guide groove, and at least the working end is of a hollow structure;

the guide way is in the smooth extension of curve on the sliding direction of apron and divide into in proper order:

the cover plate is positioned at an open position, and the open positioning end is aligned with the positioning hole and respectively accommodates a part of the elastic piece;

the resistance section is formed by extending the curve of the guide groove and is arranged in a staggered manner with the positioning hole, and the resistance section drives the elastic piece to deform and/or the elastic piece to displace relative to the positioning hole in the movement process of the cover plate;

and closing the positioning end, wherein the cover plate is in a closed position, the open positioning end is aligned with the positioning hole, and the closed positioning end is aligned with the positioning hole and respectively accommodates a part of the elastic piece.

2. The round tube self-ligating bracket of claim 1, wherein the locating hole is a stepped hole and is axially divided into:

the fixing hole is positioned at one end of the positioning hole, which is far away from the cover plate, and the aperture of the fixing hole is matched with the outer diameter of the fixing end;

and the releasing hole is positioned at one end of the positioning hole close to the cover plate, and the aperture of the releasing hole is larger than the outer diameter of the fixed end.

3. The round tube self-ligating bracket of claim 2, wherein the releasing hole is a long hole and extends in a direction intersecting with a sliding direction of the cover plate, a width W1 of the releasing hole in a self-extending direction matches an outer diameter of the fixing end, and a length S1 of the releasing hole in the self-extending direction is greater than the outer diameter of the fixing end.

4. The round tube self-ligating bracket of claim 3, wherein the ratio of the length S1 of the release hole in the direction of its extension to the outer diameter D1 of the resilient member is in the range of 1.5 to 3.

5. The round tube self-ligating bracket of claim 1, wherein the resilient member is generally cylindrical and has two ends defining the fixed end and the working end, respectively.

6. The round tube self-ligating bracket of claim 5, wherein the resilient member is symmetrically arranged as a whole, and the ratio between the wall thickness H1 and the outer diameter D1 of the resilient member ranges from 1:4 to 1: 10; the ratio between the outer diameter D1 and the overall length L1 of the elastic member is in the range of 1: 2 to 1: 5.

7. The round tube self-ligating bracket of claim 1, wherein the ratio of the length L2 of the working end to the overall length L1 of the resilient member in the axial direction of the resilient member is in the range of 1:4 to 1: 8.

8. The round tube self-ligating bracket of claim 1, wherein the guide slot is generally circular and has two enlarged ends forming the open positioning end and the closed positioning end, and the resistance section has an opening width smaller than the diameter of the open positioning end and the closed positioning end.

9. The round tube self-ligating bracket of claim 8, wherein a guiding edge is provided at the notch of the closed locating end, said guiding edge being distributed over at least 3/4 of the total circumference of the closed locating end.

10. The round tube self-ligating bracket of claim 8 wherein the end surface of said working end facing said cover plate is flat and annular and the bottom of said guide slot is flat.

Technical Field

The application relates to the field of dental orthodontics, in particular to a circular tube type self-ligating bracket.

Background

At present, in the orthodontic treatment process of oral teeth, an orthodontic bracket is fixed on the tooth surface, an arch wire passes through an arch wire groove (also known as a square wire groove) on the bracket, and the arch wire is directly ligated on a bracket ligation wing through a ligation rubber ring or a ligation steel wire, and the correction force of the arch wire is transmitted to the teeth through the bracket, so that the teeth generate expected movement, and the purpose of correcting the teeth is achieved.

For example, chinese patent publication No. CN110478062A discloses a structurally sound bracket, which includes a base with an arch wire groove, a net bottom fixed on one side of the base, and a cover plate installed on the other side of the base, wherein the bottom surface of the cover plate and the top surface of the base are attached to each other and slidably engaged; the top surface of the base support is provided with a strip-shaped elastic piece, the bottom surface of the cover plate is sequentially provided with two clamping grooves along the sliding direction of the cover plate, and a transition ridge protruding towards the direction of the base support is arranged between the two clamping grooves; one part of the elastic part is a working section, when the cover plate slides, the working section enters a corresponding clamping groove through the transition ridge, and the top surface of the base support is further provided with an avoiding groove for accommodating a deformation part of the working section when the transition ridge is abutted. Above-mentioned technical scheme passes through the cooperation of elastic component and transition spine, realizes the location to a plurality of positions of apron, has guaranteed the stability of apron state to the stability of holding in the palm groove state has been guaranteed.

The inventor finds that the existing cover plate locking mode of the self-ligating bracket still has room for improvement.

Disclosure of Invention

In order to solve the technical problem, the application discloses a circular tube type self-ligating bracket, which comprises a base with an arch wire groove, a cover plate slidably mounted on the base, wherein the cover plate has a closed position for closing the arch wire groove and a corresponding open position; the circular tube type self-locking bracket comprises a base, a cover plate and a circular tube type self-locking bracket, wherein the top surface of the base is provided with a positioning hole, the bottom surface of the cover plate is provided with a guide groove, the circular tube type self-locking bracket also comprises an elastic part inserted in the positioning hole, one end of the elastic part is a fixed end matched with the positioning hole, the other end of the elastic part is a working end extending into the guide groove, and at least the working end is of a hollow structure;

the guide way is in the smooth extension of curve on the sliding direction of apron and divide into in proper order:

the cover plate is positioned at an open position, and the open positioning end is aligned with the positioning hole and respectively accommodates a part of the elastic piece;

the resistance section is formed by extending the curve of the guide groove and is arranged in a staggered manner with the positioning hole, and the resistance section drives the elastic piece to deform and/or the elastic piece to displace relative to the positioning hole in the movement process of the cover plate;

and closing the positioning end, wherein the cover plate is in a closed position, the open positioning end is aligned with the positioning hole, and the closed positioning end is aligned with the positioning hole and respectively accommodates a part of the elastic piece.

Several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.

Optionally, the locating hole is the step hole and divide into intercommunication in the axial:

the fixing hole is positioned at one end of the positioning hole, which is far away from the cover plate, and the aperture of the fixing hole is matched with the outer diameter of the fixing end;

and the releasing hole is positioned at one end of the positioning hole close to the cover plate, and the aperture of the releasing hole is larger than the outer diameter of the fixed end.

Optionally, the release hole is a long hole and the extending direction of the release hole intersects with the sliding direction of the cover plate, the width W1 of the release hole in the extending direction of the release hole matches with the outer diameter of the fixed end, and the length S1 of the release hole in the extending direction of the release hole is greater than the outer diameter of the fixed end.

Optionally, the ratio of the length S1 of the release hole in the extending direction of the release hole to the outer diameter D1 of the elastic member ranges from 1.5 to 3.

Optionally, the elastic part is integrally of a cylindrical structure, and the two ends of the elastic part respectively form the fixed end and the working end.

Optionally, the elastic member is integrally and symmetrically arranged, and the ratio between the wall thickness H1 and the outer diameter D1 of the elastic member ranges from 1:4 to 1: 10; the ratio between the outer diameter D1 and the overall length L1 of the elastic member is in the range of 1: 2 to 1: 5.

Optionally, the ratio of the length L2 of the working end to the overall length L1 of the elastic member in the axial direction of the elastic member is in the range of 1:4 to 1: 8.

Optionally, the guide groove is integrally arc-shaped, two ends of the guide groove are expanded to form the opening positioning end and the closing positioning end, and the opening width of the resistance section is smaller than the aperture of the opening positioning end and the aperture of the closing positioning end.

Optionally, the notch of the closed position end is provided with a guide edge, and the guide edge is distributed on 3/4 length of the total circumference of the closed position end.

Optionally, the end face, facing the cover plate, of the working end is in a flat annular shape, and the bottom of the guide groove is in a flat arrangement.

The technical scheme that this application discloses through the setting of elastic component and structure on every side, has optimized the locking effect of apron, has improved assembly efficiency, has improved the cover plate motion operation and has felt, all has positive meaning to production assembly, medical use and patient's treatment.

Specific advantageous technical effects will be further explained in conjunction with specific structures or steps in the detailed description.

Drawings

FIG. 1 is a schematic view of a circular tube-type self-ligating bracket according to an embodiment;

FIG. 2 is a schematic view of the circular tube self-ligating bracket assembly of FIG. 1;

FIG. 3 is a schematic base view of the tubular self-ligating bracket of FIG. 1;

FIG. 4 is a schematic view of the positioning holes on the base of FIG. 3;

FIG. 5 is a schematic cross-sectional view of the base of FIG. 3;

FIG. 6 is a schematic view of the cover and base of a circular tube self-ligating bracket of an embodiment;

FIG. 7 is a schematic diagram of an embodiment of a cover plate and a guide groove;

FIG. 8 is a schematic view of the guide slot and resilient member of FIG. 7 engaged;

FIG. 9 is a schematic end view of an embodiment of the resilient member;

FIG. 10 is a schematic view of an embodiment of an elastic member.

The reference numerals in the figures are illustrated as follows:

1. an arch wire groove;

2. a base support; 21. positioning holes; 211. a fixing hole; 212. a release aperture;

3. a cover plate; 31. a guide groove; 311. opening the positioning end; 312. a resistance section; 313. closing the positioning end; 32. a guide edge;

4. an elastic member; 41. a fixed end; 42. a working end;

5. curve line.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

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

Referring to fig. 1 to 10, the present application discloses a circular tube type self-ligating bracket, comprising a base 2 with an archwire slot 1, a cover plate 3 slidably mounted on the base 2, the cover plate 3 having a closed position (shown in fig. 1) closing the archwire slot 1 and a corresponding open position; the top surface of the base support 2 is provided with a positioning hole 21, the bottom surface of the cover plate 3 is provided with a guide groove 31, the circular tube type self-ligating bracket further comprises an elastic part 4 inserted in the positioning hole 21, one end of the elastic part 4 is a fixed end 41 matched with the positioning hole 21, the other end is a working end 42 extending into the guide groove 31, and at least the working end 42 is of a hollow structure;

the guide groove 31 extends smoothly along the curve 5 in the sliding direction of the cover plate 3 and is divided into:

the opening positioning end 311, the cover plate 3 is under the opening position, the opening positioning end 311 is aligned with the positioning hole 21 and respectively accommodates a part of the elastic element 4;

the resistance section 312 is formed by extending the curve 5 of the guide groove 31 and is arranged in a staggered manner with the positioning hole 21, and in the movement process of the cover plate 3, the resistance section 312 drives the elastic part 4 to deform and/or the elastic part 4 to displace relative to the positioning hole 21;

when the positioning end 313 is closed, the cover 3 is in a closed position, the open positioning end 311 is aligned with the positioning hole 21, and the closed positioning end 313 is aligned with the positioning hole 21 and respectively receives a part of the elastic member 4.

During movement of the lid sheet in a single direction, the axis of the locating port and the center line of the guide groove 31 undergo at least alignment, misalignment, and realignment processes. That is, during the movement of the cover sheet in a single direction, particularly during the movement of the cover sheet 3 from the open position to the closed position, the positioning hole 21 is aligned with the open positioning end 311, misaligned with the resistance section 312, and aligned again with the closed positioning end 313.

The open positioning end 311 and the closed positioning end 313 serve to achieve restraint of the working end 42, thereby providing a relatively stable positional relationship between the elastic member 4 and the cover plate 3. The resistance section 312 can ensure that the cover plate 3 cannot tend to deform the elastic member 4 under the action of external force, so as to ensure the stability of the position of the cover plate 3.

In the process of the deformation of the elastic part 4, the displacement of the elastic part 4 relative to the positioning hole 21 and the self deformation of the elastic part 4 can independently occur, namely, the two can occur simultaneously or can occur independently. The displacement of the elastic member 4 relative to the positioning hole 21 is shown as a slight displacement, and the positioning effect of the positioning hole 21 on the elastic member 4 cannot be affected in principle, and the key point is that the elastic member 4 avoids the cover plate 3 or a component on the cover plate 3 through displacement. Wherein elastic component 4 self deformation both can show as elastic component 4 is at the ascending distortion of axial, also can show as concentrating into hollow structure's deformation, and hollow structure can further enlarge and control the deformation stroke to it experiences to provide the controllable apron 3 drive of more linearity. The technical scheme that this application discloses through the setting of elastic component 4 and structure on every side, has optimized the locking effect of apron 3, has improved assembly efficiency, has improved the cover plate motion operation and has felt, all has positive meaning to production assembly, medical use and patient's treatment.

In the positioning of the positioning holes 21, referring to the embodiment shown in fig. 3 to 5, the positioning holes 21 are stepped holes and are axially divided into two parts that are communicated with each other:

the fixing hole 211 is positioned at one end of the positioning hole 21 far away from the cover plate 3, and the aperture of the fixing hole 211 is matched with the outer diameter of the fixing end 41;

and the releasing hole 212 is positioned at one end of the positioning hole 21 close to the cover plate 3, and the aperture of the releasing hole 212 is larger than the outer diameter of the fixing end 41.

The fixing hole 211 serves to restrain the position of the elastic member 4 during the operation of the self-ligating bracket, and also has a function of pre-positioning the elastic member 4, which is very important for the assembly of the self-ligating bracket. The release holes 212 serve to release a certain degree of deformation of the elastic member 4, especially torsion in its own axial direction, thereby improving the installation and use experience of the cover plate 3.

Referring to the embodiment shown in fig. 3, the release hole 212 is a long hole and the extending direction intersects with the sliding direction of the cover plate 3, the width W1 of the release hole 212 in the extending direction thereof matches with the outer diameter of the fixed end 41, and the length S1 of the release hole 212 in the extending direction thereof is greater than the outer diameter of the fixed end 41. Further, the ratio of the length S1 of the release hole 212 in the self-extending direction to the outer diameter D1 of the elastic member 4 ranges from 1.5 to 3. In the drawing, the ratio of S1 to D1 ranges from 1.8 to 2.5.

In the details of the arrangement of the elastic member 4, referring to the embodiment shown in fig. 9 to 10, the elastic member 4 is of a cylindrical structure as a whole and both ends constitute a fixed end 41 and a working end 42, respectively. Further, the elastic piece 4 is integrally and symmetrically arranged so as to facilitate the installation of the elastic piece 4, the installation efficiency can be effectively improved without dividing the positive and negative installation mode, and the defect rate is reduced. Further, the ratio between the wall thickness H1 and the outer diameter D1 of the elastic member 4 ranges from 1:4 to 1: 10; the elastic part 4 is a thin-walled part as a whole, the thin wall thickness is adapted to the driving torque of the cover plate 3, and under the selection of the existing material, the range in the embodiment gives consideration to the stability of the positioning effect of the cover plate 3 and the driving hand feeling. Further, the ratio between the outer diameter D1 and the overall length L1 of the elastic member 4 ranges from 1: 2 to 1: 5. The elastic member 4 is integrally a long member, thereby allowing partial twisting to further improve the deformation stroke. Referring to the embodiment of fig. 6, the ratio of the length L2 of the working end 42 to the overall length L1 of the resilient member 4 in the axial direction of the resilient member 4 ranges from 1:4 to 1: 8. The arrangement in this embodiment takes into account the deformation effect of the working end 42 and the positioning strength of the cover plate 3.

The working effect of the elastic member 4 also needs to be achieved by the guide groove 31 arrangement. Referring to the embodiment shown in fig. 7 to 8, the guide groove 31 is generally circular arc-shaped and has two enlarged ends to form an open positioning end 311 and a closed positioning end 313, and the opening width of the resistance section 312 is smaller than the hole diameters of the open positioning end 311 and the closed positioning end 313. In the embodiment shown in the drawings, the inner edges of a part of the open positioning end 311 and the closed positioning end 313 are in surface contact with the outer edge of a part of the elastic member 4, and the other part is in clearance fit with the outer edge of the elastic member 4 to provide a movement space for deformation or displacement of the elastic member 4. In the assembly detail, the notch closing the positioning end 313 is provided with a guide edge 32, and the guide edge 32 can be actually realized by chamfering the notch closing the positioning end 313. The guide edges 32 are distributed over at least the length 3/4 of the total circumference of the closed locating end 313. In the embodiment shown in the figures, the guide edges 32 are distributed over the entire section of the slot closing the positioning end 313. Furthermore, the end surface of the working end 42 facing the cover plate 3 is a flat ring shape, and the bottom of the guide groove 31 is flat. The two of level and smooth setting can avoid unnecessary interference to provide stable controllable apron 3 operation and feel. In the specific product, the groove base of the guide groove 31 and the working end 42 are arranged toward the end face gap of the cover plate 3.

When the cover plate 3 enters the closed position from the open position, the working end 42 enters the closed positioning end 313 from the resistance section 312 through the open positioning section, so that the switching and the keeping of different states of the cover plate 3 are realized. When the working end 42 passes through the resistance section 312, the resistance section 312 is misaligned with the positioning hole 21 (especially the fixing hole 211), so that the elastic member 4 needs to be deformed and/or displaced. Wherein the deformation is embodied as a local deformation of the hollow structure.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. When technical features in different embodiments are represented in the same drawing, it can be seen that the drawing also discloses a combination of the embodiments concerned.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.