Cover plate type self-ligating bracket
By using elastic plates and articulated components in the cover plate self-locking bracket, the problem of arch wire breakage and poor correction results is solved, and more efficient orthodontic treatment is achieved, reducing the cost and cycle of correction.
Patent Information
- Application Number
- CN202411579765.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-01-07
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing cover-type self-locking brackets are prone to breaking during the orthodontic process of malfunctioning teeth, and the correction effect is poor, resulting in high correction cost and long cycle.
A cover plate-type self-locking bracket including a bracket body and a cover plate is designed, and an elastic plate is installed on both sides of the arch wire groove to reduce the gap between the arch wire and the arch wire groove, and the cover is improved by hinging and connecting components. The stability and operational ease of the board avoid excessive compression and friction of the arch wire.
It effectively avoids arch wire breakage, improves the correction efficiency and effect, reduces the correction cost and cycle, and enhances the stability and comfort of the bracket.
Smart Images
Figure CN119257765A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of dental medical treatment, and in particular to a cover plate type self-locking bracket. Background Art
[0002] At present, orthodontic treatment is a highly specialized branch of dentistry, which mainly corrects tooth, jaw and facial deformities, and gradually restores the patient's normal bite function by fixing orthodontic appliances inside the mouth. In orthodontic treatment, self-ligating brackets are widely used in the process of tooth correction as a fast, comfortable and safe fixed correction device.
[0003] The cover-type bracket is one of the self-ligating brackets. When the existing cover-type self-ligating brackets are used, due to the initial state of the malocclusion teeth, after the correction arch wire is installed in place, the arch wire will undergo a certain deformation, resulting in squeezing of the arch wire and the edges of the cover plate on both sides. Therefore, the more severe the twisting of the malocclusion teeth, the greater the squeezing force between the arch wire and the left and right edges of the cover plate, the more concentrated the stress at the contact point, and the easier it is for the arch wire to break. Similar situations often occur in the early stages of clinical correction, and the arch wire often breaks and often needs to be re-bent; in addition, there is a certain gap between the arch wire and the cover plate, which can easily cause the torque, axial inclination, etc. attached to the bracket to be partially lost and cannot be fully expressed, which not only increases the correction cost, but also greatly prolongs the correction period and affects the correction effect. Summary of the invention
[0004] In order to reduce the occurrence of archwire breakage and improve correction efficiency, the present application provides a cover-type self-ligating bracket.
[0005] The present application provides a cover-type self-locking bracket adopts the following technical solution: A cover-type self-locking bracket comprises a bracket body and a cover plate, wherein the bracket body is provided with an archwire slot; the cover plate is arranged on a side of the bracket body where the archwire slot is provided, one end of the cover plate is hinged to the bracket body and is located on one side of the archwire slot, and the other end is detachably mounted on the bracket body through a connecting assembly; a pair of elastic plates are arranged on the cover plate at a position corresponding to the archwire slot, and the two elastic plates are respectively located on two sides of the cover plate and at positions corresponding to corners.
[0006] By adopting the above technical solution, after the archwire is placed in the archwire slot, the cover plate is rotated to cover the side of the bracket body where the archwire slot is opened, and the archwire slot is closed. At this time, the elastic plate abuts against the archwire, reducing the gap between the archwire and the archwire slot, preventing the archwire from shaking or rotating in the archwire slot during the correction process; and the elastic plate does not crush the archwire to death, avoiding increasing the friction between the archwire and the groove; furthermore, the two elastic plates are located at the corner positions on both sides of the cover plate, thereby controlling the problem of excessive concentration of extrusion stress between the correction archwire and the left and right edges of the cover plate due to excessive torsion of the teeth in the early stage of correction. The more serious the torsion of the malocclusion teeth, the smaller the extrusion angle a between the archwire and the left and right edges of the cover plate (refer to Figure 1 and Figure 2 ), the more concentrated the stress at the contact point, the easier it is for the archwire to break. The elastic plate plays a great buffering role, effectively preventing the archwire from breaking due to excessive twisting of the teeth, and improving the efficiency of correction.
[0007] Preferably, the elastic plate includes a front portion and a side portion, the front portion and the side portion are integrally formed, the front portion faces the archwire slot, and the side portion is located on the side wall of the cover plate in the extension direction of the archwire slot.
[0008] By adopting the above technical solution, although only the front part can be extended to solve the problems of excessive stress concentration and arch wire breakage, when in actual use, the extended part of the front part is piled up many times, it is easy to break; therefore, the side part is added to make the elastic plate as a whole present an angle plate shape, when the arch wire and the cover plate are squeezed, the arch wire is given sufficient buffering effect and the elastic plate is not easy to break, and the side part can also enhance the adhesion between the elastic plate and the cover plate.
[0009] Preferably, a recessed groove is formed at a position of the cover plate corresponding to the elastic plate, and the elastic plate is clamped to the cover plate via the recessed groove.
[0010] By adopting the above technical solution, the installation of the elastic plate is made more stable and the displacement during use is reduced.
[0011] Preferably, the connecting assembly includes a plug-in block and a pull pin, the plug-in block is arranged at one end of the cover plate away from the hinge and facing the side of the bracket body, the bracket body is provided with a plug-in slot on the side facing the cover plate, and the plug-in block is plugged into the bracket body through the plug-in slot; the bracket body is provided with a sliding hole, one end of the sliding hole is connected to the plug-in slot, and the other end extends out of the bracket body, the plug-in block has a limiting hole at the position corresponding to the sliding hole, the pull pin is slidably installed in the sliding hole, one end of the pull pin extends into the plug-in slot and is plugged into the limiting hole, and the other end extends out of the bracket body.
[0012] By adopting the above technical solution, when the cover plate is rotated to close the archwire slot, the plug-in block is inserted into the plug-in slot, and then the doctor uses a tool to push the end of the pull pin extending out of the bracket body, so that the pull pin slides in the sliding hole until the bottom end of the pull pin is inserted into the limiting hole, so that the plug-in block is stabilized in the plug-in slot, thereby achieving the limit of the cover plate; this structure is easy to operate and improves treatment efficiency.
[0013] Preferably, an elastic limit pin is installed in the sliding hole, and the elastic limit pin extends in a direction perpendicular to the push pin. A limiting convex ring is provided at the position of the push pin corresponding to the elastic limit pin, and both side surfaces of the limiting convex ring in the sliding direction of the push pin are arc-shaped guide surfaces; when the elastic limit pin is located on the side of the limiting convex ring away from the plug-in slot, the push pin is plugged into the limiting hole; when the elastic limit pin is located on the side of the limiting convex ring close to the plug-in slot, the push pin leaves the limiting hole.
[0014] By adopting the above technical scheme, after the plug-in block is inserted into the plug-in slot, the push pin is pressed so that the push pin is inserted into the limiting hole. At the same time, the limiting convex ring can smoothly pass through the elastic limiting pin through the deformation of the elastic limiting pin. Through the action of the elastic limiting pin, the elastic limiting pin is stabilized on the side of the elastic limiting pin close to the plug-in slot, thereby reducing the possibility of the push pin falling off and the cover plate failing due to collision with teeth or food in the mouth; and when the push pin is pulled so that the limiting convex ring is on the side of the elastic limiting pin away from the plug-in slot, the push pin can be stabilized in the state of leaving the limiting hole without sliding spontaneously, thereby improving the efficiency of subsequent re-positioning.
[0015] Preferably, the elastic limiting pin includes a first connecting section and a pair of first elastic sheets, the two first elastic sheets are spaced apart in a direction perpendicular to the push pin, one end of the first elastic sheet is elastically connected to the first connecting section and the other end is a free end, and the push pin is located between the two first elastic sheets.
[0016] By adopting the above technical solution, since the detent pin is located between the two first elastic sheets, the deformation of the elastic limiting pin is more stable when the limiting protrusion passes through the elastic limiting pin, and the position limitation of the detent pin is more stable.
[0017] Preferably, the two first elastic sheets have first arc segments protruding outward in directions away from each other at positions corresponding to the push pins and matching the limiting convex ring. When the two first elastic sheets are in a natural state, the distance between the two first arc segments is smaller than the diameter of the limiting convex ring.
[0018] By adopting the above technical solution and setting the first arc segment, the deformation amplitude of the first elastic sheet can be reduced, the occurrence of failure can be reduced, and the overall stability of use can be improved.
[0019] Preferably, the push pin includes a second connecting section and a pair of second elastic sheets, the two second elastic sheets are arranged opposite to each other at an interval, one end of the second elastic sheet is elastically connected to the second connecting section, and the other end is inserted into the limiting hole; the two second elastic sheets are both provided with a second arc segment, and the second arc segments on the two second elastic sheets are convex in a direction away from each other; the side walls of the sliding hole and corresponding to the positions of the second arc segments are provided with locking grooves, and the second arc segments are locked in the locking grooves.
[0020] By adopting the above technical solution, when the plug-in block is inserted into the plug-in slot, the push pin is pressed so that the push pin is inserted into the limiting hole. At the same time, the second arc segment is smoothly inserted into the locking slot through the deformation of the second elastic sheet, so that the push pin is stabilized in the corresponding position, thereby reducing the possibility of the push pin falling off and the cover plate failing due to collision with teeth or food in the mouth.
[0021] Preferably, the bracket body includes a main body and a pair of lower wings, and the two lower wings are installed at intervals on a side of the main body where the archwire slot is opened in the length direction of the archwire slot, and a hinge groove is formed between the two lower wings, and the cover plate is hinged in the hinge groove; the edge of the main body away from one end of the plug-in slot and the position corresponding to the hinge groove is a limiting surface, and when the cover plate is rotated to form an acute angle with the main body, the cover plate is close to one side of the main body and away from one end of the plug-in block and abuts against the limiting surface.
[0022] By adopting the above technical solution, when the cover is rotated to open the archwire slot, the cover is rotated until the end of the cover that is close to the main body and away from the plug-in block abuts against the limit surface. The limit surface limits the rotation angle of the cover to an acute angle, and the opening space of the cover is sufficient to put the archwire into or take it out of the archwire slot; it does not rotate 180° like the covers of most brackets in the prior art. When the cover needs to be closed, a large rotation angle is required, which is prone to errors. Therefore, the above structure of the present application can greatly facilitate the operation of the cover.
[0023] Preferably, the surfaces of the bracket body and the cover plate that abut against each other are both matched arc surfaces, and the side of the cover plate away from the bracket body is also an arc surface.
[0024] By adopting the above technical solution, the overall roundness of the bracket is increased, thereby improving the comfort between the patient and the oral cavity during the correction process.
[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. The elastic plate abuts against the archwire, reducing the gap between the archwire and the archwire slot, preventing the archwire from shaking or rotating in the archwire slot during correction; and the elastic plate does not press the archwire to death, avoiding increasing the friction between the archwire and the slot; 2. The two elastic plates are located at the corners on both sides of the cover plate, which can control the problem of excessive concentration of extrusion stress between the arch wire and the left and right edges of the cover plate due to excessive tooth twisting in the early stage of correction. The more serious the degree of malocclusion tooth twisting, the smaller the extrusion angle a between the arch wire and the left and right edges of the cover plate, the more concentrated the stress at the contact point, and the easier it is for the arch wire to break. The elastic plate plays a great buffering role, effectively avoiding the problem of arch wire breaking due to excessive tooth twisting, and improving correction efficiency; 3. The side part is added, so that the elastic plate is in the shape of an angle plate as a whole. When the arch wire and the cover plate are squeezed, the arch wire is given sufficient buffering effect and the elastic plate is not easy to break. The side part can also enhance the bonding force between the elastic plate and the cover plate; 4. Through the action of the elastic limiting pin, the elastic limiting pin is stabilized on the side of the elastic limiting pin close to the plug-in slot, reducing the possibility of the pin falling off and the cover plate failing due to collision with teeth or food in the mouth; and when the pin is pulled so that the limiting convex ring is on the side of the elastic limiting pin away from the plug-in slot, the pin can be stabilized in a state of leaving the limiting hole without sliding spontaneously, thereby improving the efficiency of subsequent re-positioning; 5. When the cover is rotated to open the archwire slot, the cover is rotated until the cover is rotated to a position where the end of the cover close to the main body and away from the plug-in block abuts against the limit surface. The limit surface limits the rotation angle of the cover to an acute angle, and the opening space of the cover is sufficient to put the archwire into or take it out of the archwire slot; it does not rotate 180° like the covers of most brackets in the prior art. When the cover needs to be closed, a large rotation angle is required, which is prone to errors. Therefore, the above structure of the present application can greatly facilitate the operation of the cover. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.
[0027] Figure 2 It is a schematic diagram of the angle between the arch wire and the cover plate in Example 1 of the present application.
[0028] Figure 3 It is a schematic diagram of the cover opening structure of Example 1 of the present application.
[0029] Figure 4 It is a cross-sectional view of the cover locking structure of Example 1 of the present application.
[0030] Figure 5 yes Figure 3 A partial enlarged view of middle A.
[0031] Figure 6 It is a cross-sectional view of the elastic limit pin installation structure of Example 1 of the present application.
[0032] Figure 7 yes Figure 5 A partial enlarged view of B.
[0033] Figure 8 It is a cross-sectional view of the cover opening structure of Example 1 of the present application.
[0034] Fig. 9 It is a cross-sectional view of the cover locking structure of Example 2 of the present application.
[0035] Fig.10 This is a cross-sectional view from another perspective of the cover locking structure of Example 2 of the present application.
[0036] Fig.11 yes Fig.10 A partial enlarged view of C in the middle.
[0037] Description of reference numerals: 1. Base plate; 2. Bracket body; 21. Main body; 22. Upper wing; 23. Lower wing; 24. Archwire slot; 25. Plug-in slot; 26. Sliding hole; 261. Positioning slot; 27. Mounting slot; 28. Deformation limiting slot; 29. Hinge slot; 20. Limiting surface; 3. Cover plate; 31. Sinking slot; 32. Toggle block; 321. Toggle slot; 4. Elastic plate; 41. Front part; 42. Side part; 5. Connecting assembly; 51. Plug-in block; 511. Limiting hole; 52. Toggle pin; 521. Toggle hole; 522. Limiting convex ring; 523. Second connecting section; 524. Second elastic sheet; 525. Second arc section; 53. Elastic limiting pin; 531. First connecting section; 532. First elastic sheet; 533. First arc section; 101. Archwire. DETAILED DESCRIPTION
[0038] The following is combined with Figure 1-11 This application is described in further detail.
[0039] The embodiment of the present application discloses a cover-type self-locking bracket.
[0040] Example 1 Reference Figure 1 The cover-type self-ligating bracket includes a base plate 1, a bracket body 2 and a cover plate 3. The base plate 1 is integrally formed on one side of the bracket body 2, and an archwire slot 24 is opened on the other side of the bracket body 2. The cross-sectional area of the base plate 1 is larger than the cross-sectional area of the bracket body 2. The base plate 1 is in an arc shape that matches the tooth surface. The side of the base plate 1 away from the bracket body 2 is used for bonding to the tooth surface. The side of the base plate 1 away from the bracket body 2 is provided with a mesh pattern, so that the base plate 1 is more firmly bonded to the tooth surface.
[0041] Reference Figure 1 and Figure 3 The bracket body 2 includes a main body 21, an upper wing 22 and a lower wing 23, an archwire slot 24 is provided on the main body 21, and the upper wing 22 and the lower wing 23 are respectively integrally formed and installed on the main body 21 and are located on both sides of the slot of the archwire slot 24; the cover plate 3 is provided on one side of the bracket body 2 where the archwire slot 24 is provided, one end of the cover plate 3 is hinged on the lower wing 23, and the other end is detachably installed on the upper wing 22 through a connecting component 5; a pair of elastic plates 4 are provided on the cover plate 3 at the position corresponding to the archwire slot 24, and the two elastic plates 4 are respectively located at the two side corners of the cover plate 3 in the length direction of the archwire slot 24; the elastic plate 4 includes a front part 41 and a side part 42, the front part 41 and the side part 42 are integrally formed and arranged, and the front part 41 and the side part 42 are arranged at a right angle; the front part 41 is attached and fixed to the cover plate 3 facing the archwire slot 24 The side portion 42 is attached and fixed to the side wall of the cover plate 3 in the extension direction of the archwire slot 24; the cover plate 3 is provided with a recessed groove 31 at the position corresponding to the front portion 41 and the side portion 42, and the front portion 41 and the side portion 42 are clamped to the cover plate 3 through the corresponding recessed groove 31, and the front portion 41 and the side portion 42 are away from the recessed groove 31. The side protrudes out of the recessed groove 31; thereby reducing the gap between the archwire 101 and the archwire slot 24 to prevent the archwire 101 from shaking or rotating in the archwire slot 24 during the correction process; and plays a great buffering role, controlling the problem of excessive concentration of extrusion stress on the left and right edges of the correction archwire 101 and the cover plate 3 due to excessive tooth twisting in the early stage of correction. The more serious the twisting degree of the malocclusion teeth, the smaller the extrusion angle a between the archwire 101 and the left and right edges of the cover plate 3 (refer to Figure 1 and Figure 2 ), the more concentrated the stress at the contact point is, the easier it is for the arch wire 101 to break.
[0042] Refer to 4 and Figure 5 The connecting component 5 includes a plug-in block 51 and a pull pin 52. The plug-in block 51 is integrally formed and arranged on the side of the cover plate 3 facing the bracket body 2. The upper wing 22 is provided with a plug-in slot 25, and the plug-in block 51 is plugged into the upper wing 22 through the plug-in slot 25; the upper wing 22 is provided with a sliding hole 26 located directly above the plug-in slot 25, and the sliding hole 26 extends in the vertical direction. One end of the sliding hole 26 is connected to the plug-in slot 25, and the other end is connected to the top of the upper wing 22. A limiting hole 511 is provided at a position directly below the plug-in block 51 corresponding to the sliding hole 26, and the pull pin 52 is slidably installed on the upper wing 22 through the sliding hole 26. One end of the pull pin 52 extends into the plug-in slot 25 and is plugged into the plug-in block 51 through the limiting hole 511, and the other end extends out of the top of the upper wing 22 and is provided with a toggle hole 521; thereby, the plug-in block 51 can be locked and opened by toggling the pull pin 52.
[0043] Reference Figure 5 , Figure 6 and Figure 7 The upper wing 22 is located in the sliding hole 26 and has a mounting groove 27 formed on the hole wall. An elastic limiting pin 53 is installed in the upper wing 22 in the mounting groove 27. The elastic limiting pin 53 includes a first connecting section 531 and a pair of first elastic sheets 532. The two first elastic sheets 532 are spaced apart in a direction perpendicular to the detent pin 52. The first elastic sheets 532 extend in a direction perpendicular to the detent pin 52. One end of the first elastic sheet 532 is elastically connected to the first connecting section 531 and the other end is a free end. The detent pin 52 is located between the two first elastic sheets 532. A limiting convex ring 522 is integrally formed at the position of the detent pin 52 close to the elastic limiting pin 53. Both side surfaces of the limiting convex ring 522 in the sliding direction of the detent pin 52 are arc-shaped guide surfaces. The positions of the first elastic sheets 532 corresponding to the push pins 52 are respectively protruded with first arc segments 533 in the direction away from each other, and the shape of the first arc segments 533 is an arc that matches the limiting convex ring 522; when the two first elastic sheets 532 are in a natural state, the distance between the two first arc segments 533 is smaller than the diameter of the limiting convex ring 522; when the limiting convex ring 522 is on the side of the first elastic sheet 532 close to the insertion groove 25, the push pin 52 is inserted into the limiting hole 511; when the limiting convex ring 522 is on the side of the first elastic sheet 532 away from the insertion groove 25, the push pin 52 is in a state of leaving the limiting hole 511; thereby, the push pin 52 can be stabilized in the state of locking or opening the cover plate 3 by toggling it.
[0044] Reference Figure 6 and Figure 7 The mounting groove 27 is located on the side close to the cover plate 3 and connected to the outside of the upper wing 22, and the mounting groove 27 is far away from the side connected to the outside of the upper wing 22 and corresponds to the free end position of the first elastic sheet 532. A deformation limiting groove 28 is provided, and the width of the deformation limiting groove 28 is greater than the width of the first elastic sheet 532. When installing the elastic limiting pin 53, the elastic limiting pin 53 can be directly inserted from the position where the mounting groove 27 connects to the outside of the upper wing 22 until the free end of the first elastic sheet 532 is inserted into the deformation limiting groove 28, and the installation is convenient.
[0045] Reference Figure 1 and Figure 3 A toggle block 32 is installed at one end of the cover plate 3 away from the hinge, and a toggle groove 321 is provided on the side of the toggle block 32 facing the bracket body 2; thus, the cover plate 3 can be opened after the toggle pin 52 unlocks the plug-in block 51; the surfaces where the bracket body 2 and the cover plate 3 abut are both matching arc surfaces, and the side of the cover plate 3 away from the bracket body 2 is also an arc surface, thereby improving the patient's comfort.
[0046] Reference Figure 3 and Figure 8, a pair of lower wings 23 are provided, and the two lower wings 23 are installed on the main body 21 at intervals in the length direction of the archwire slot 24, and a hinge slot 29 is formed between the two lower wings 23; the end of the cover plate 3 away from the plug-in block 51 is clamped in the hinge slot 29 and is hinged to the two lower wings 23 at the same time, thereby completing the hinge connection of the cover plate 3; the edge of the end of the main body 21 away from the plug-in slot 25 and the surface corresponding to the position of the hinge slot 29 is the limiting surface 20, when the cover plate 3 is rotated to form an acute angle with the main body 21, the cover plate 3 is close to the side of the main body 21 and away from the plug-in block 51. The position of the end position of the cover plate 3 is abutted against the limiting surface 20, and the limiting surface 20 is in an arc shape, so that when the cover plate 3 is opened, the cover plate 3 can be rotated to an acute angle through the limiting effect of the limiting surface 20, which can not only ensure that the archwire 101 can be taken out or installed, but also facilitate the subsequent closing of the cover plate 3.
[0047] The implementation principle of Example 1 is as follows: when in use, the cover plate 3 is first turned open and abutted against the limiting surface 20, and then the arch wire 101 is placed in the arch wire slot 24, and then the cover plate 3 is rotated until the plug block 51 is inserted into the plug slot 25, and then the pin 52 is pressed down until the pin 52 is inserted into the limiting hole 511; at this time, not only the cover plate 3 can be locked, but also the gap between the arch wire 101 and the arch wire slot 24 can be reduced through the action of the elastic plate 4, and the problem of excessive concentration of extrusion stress between the correction arch wire 101 and the left and right edges of the cover plate 3 due to excessive torsion of the teeth in the early stage of correction can be controlled; when it needs to be opened, the pin 52 is directly pulled upwards so that the pin 52 leaves the limiting hole 511 and the cover plate 3 can be rotated to open.
[0048] Example 2 Reference Fig. 9 , Fig.10 and Fig.11 The difference between this embodiment and the first embodiment is that the deflector pin 52 includes a second connecting section 523 and a pair of second elastic sheets 524, the second connecting section 523 is an arc-shaped section and forms a deflection hole 521, the two second elastic sheets 524 are long strips, the two second elastic sheets 524 are arranged horizontally and spaced opposite to each other, one end of the second elastic sheet 524 is elastically integrally connected to the second connecting section 523, and the other end is inserted into the limiting hole 511; the two second elastic sheets 524 are both provided with second arc sections 525 at the positions in the sliding hole 26, and the second arc sections 525 on the two second elastic sheets 524 are convex in the direction of moving away from each other; the side walls of the sliding hole 26 and the positions corresponding to the second arc sections 525 are both provided with clamping grooves 261, and the second arc sections 525 are clamped in the upper wing 22 through the clamping grooves 261; the width of the sliding hole 26 is sufficient for the second arc sections 525 to pass through when the two second elastic sheets 524 are deformed in the direction of approaching each other.
[0049] The implementation principle of Example 2 is as follows: when in use, the cover plate 3 is first rotated open to abut against the limiting surface 20, and then the archwire 101 is placed into the archwire slot 24, and then the cover plate 3 is rotated until the plug-in block 51 is inserted into the plug-in slot 25, and then the second connecting section 523 is pressed down until the second elastic sheet 524 is inserted into the limiting hole 511, and the second arc section 525 is snapped into the snap-in slot 261, so as to lock the cover plate 3.
[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A cover-type self-locking bracket, characterized in that: The invention comprises a bracket body (2) and a cover plate (3), wherein the bracket body (2) is provided with an archwire slot (24); the cover plate (3) is provided on one side of the bracket body (2) where the archwire slot (24) is provided; one end of the cover plate (3) is hinged to the bracket body (2) and is located on one side of the archwire slot (24), and the other end is detachably mounted on the bracket body (2) via a connecting component (5); a pair of elastic plates (4) are provided at positions of the cover plate (3) corresponding to the archwire slot (24), and the two elastic plates (4) are respectively located on two sides of the cover plate (3) and at positions corresponding to the corners.
2. A cover-type self-locking bracket according to claim 1, characterized in that: The elastic plate (4) comprises a front portion (41) and a side portion (42), wherein the front portion (41) and the side portion (42) are integrally formed, the front portion (41) faces the archwire slot (24), and the side portion (42) is located on a side wall of the cover plate (3) in the extension direction of the archwire slot (24).
3. A cover-type self-locking bracket according to claim 2, characterized in that: A recessed groove (31) is provided on the cover plate (3) at a position corresponding to the elastic plate (4), and the elastic plate (4) is clamped to the cover plate (3) via the recessed groove (31).
4. The cover-type self-locking bracket according to claim 1, characterized in that: The connecting assembly (5) comprises a plug-in block (51) and a pull pin (52); the plug-in block (51) is arranged at one end of the cover plate (3) away from the hinge and facing the side of the bracket body (2); the bracket body (2) is provided with a plug-in slot (25) on the side facing the cover plate (3); the plug-in block (51) is plugged into the bracket body (2) through the plug-in slot (25); the bracket body (2) is provided with a sliding hole (26); One end of the sliding hole (26) is connected to the plug-in slot (25), and the other end extends out of the bracket body (2); the plug-in block (51) is provided with a limiting hole (511) at a position corresponding to the sliding hole (26); the push pin (52) is slidably installed in the sliding hole (26); one end of the push pin (52) extends into the plug-in slot (25) and is plugged into the limiting hole (511), and the other end extends out of the bracket body (2).
5. The cover-type self-locking bracket according to claim 4, characterized in that: An elastic limiting pin (53) is installed in the sliding hole (26), and the elastic limiting pin (53) extends in a direction perpendicular to the push pin (52). A limiting convex ring (522) is arranged at a position of the push pin (52) corresponding to the elastic limiting pin (53), and both side surfaces of the limiting convex ring (522) in the sliding direction of the push pin (52) are arc-shaped guiding surfaces; when the elastic limiting pin (53) is located on a side of the limiting convex ring (522) away from the plug-in slot (25), the push pin (52) is plugged into the limiting hole (511); when the elastic limiting pin (53) is located on a side of the limiting convex ring (522) close to the plug-in slot (25), the push pin (52) leaves the limiting hole (511).
6. The cover-type self-locking bracket according to claim 5, characterized in that: The elastic limiting pin (53) comprises a first connecting section (531) and a pair of first elastic sheets (532), the two first elastic sheets (532) are spaced apart in a direction perpendicular to the detent pin (52), one end of the first elastic sheet (532) is elastically connected to the first connecting section (531), and the other end is a free end, and the detent pin (52) is located between the two first elastic sheets (532).
7. The cover-type self-locking bracket according to claim 6, characterized in that: The two first elastic sheets (532) correspond to the positions of the push pins (52) and respectively protrude in directions away from each other with first arc segments (533) adapted to the limiting convex ring (522); when the two first elastic sheets (532) are in a natural state, the distance between the two first arc segments (533) is smaller than the diameter of the limiting convex ring (522).
8. The cover-type self-locking bracket according to claim 4, characterized in that: The detent pin (52) comprises a second connecting section (523) and a pair of second elastic sheets (524), the two second elastic sheets (524) are arranged opposite to each other at an interval, one end of the second elastic sheet (524) is elastically connected to the second connecting section (523), and the other end is inserted into the limiting hole (511); the two second elastic sheets (524) are both provided with a second arc section (525), and the second arc sections (525) on the two second elastic sheets (524) are convex in a direction away from each other; the side wall of the sliding hole (26) and corresponding to the position of the second arc section (525) are both provided with a clamping groove (261), and the second arc section (525) is clamped in the clamping groove (261).
9. The cover-type self-locking bracket according to claim 1, characterized in that: The bracket body (2) comprises a main body (21) and a pair of lower wings (23); the two lower wings (23) are installed at intervals on a side of the main body (21) where the archwire slot (24) is provided, in the length direction of the archwire slot (24); a hinge slot (29) is formed between the two lower wings (23); the cover plate (3) is hinged in the hinge slot (29); the edge of the main body (21) away from one end of the plug-in slot (25) and corresponding to the hinge slot (29) is a limiting surface (20); when the cover plate (3) is rotated to form an acute angle with the main body (21), the cover plate (3) is close to one side of the main body (21) and away from one end of the plug-in block (51) and abuts against the limiting surface (20).
10. The cover-type self-locking bracket according to claim 1, characterized in that: The surfaces of the bracket body (2) and the cover plate (3) that abut against each other are both matching arc surfaces, and the side of the cover plate (3) away from the bracket body (2) is also an arc surface.