CN113244002B

CN113244002B - Novel initiative passive self-locking bracket

Info

Publication number: CN113244002B
Application number: CN202110532623.3A
Authority: CN
Inventors: 胡毅; 王建均; 董小娟
Original assignee: Zhejiang Pute Medical Instrument Co ltd
Current assignee: Zhejiang Pute Medical Instrument Co ltd
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2023-06-02
Anticipated expiration: 2041-05-17
Also published as: CN113244002A

Abstract

The present invention belongs to the field of orthodontic appliances. The novel active and passive self-locking bracket comprises a bracket parent body, wherein the bracket parent body is provided with an arch wire groove, two sides of the arch wire groove are provided with working wings, one side of the working wings is provided with a sliding groove, sliding lock plates are arranged in the sliding groove, two sides of the sliding lock plates are provided with a first lock plate sliding bar and a second lock plate sliding bar, two side walls of the corresponding sliding groove are provided with a first parent sliding groove and a second parent sliding groove, and the first lock plate sliding bar and the second lock plate sliding bar respectively slide in the first parent sliding groove and the second parent sliding groove; the sliding groove is also internally provided with a locking mechanism which is positioned below the sliding lock piece and is used for providing a locking force for the locking end of the sliding lock piece downwards and inwards when the sliding lock piece is in a locking state. The invention has the advantages that the self-locking bracket capable of realizing active and passive self-locking simultaneously is provided, the self-locking mode is changed only by changing the size of the archwire penetrating the bracket, and the operation is very convenient and quick.

Description

Novel initiative passive self-locking bracket

Technical Field

The invention belongs to the field of orthodontic appliances, and particularly relates to a novel active and passive self-locking bracket.

Background

Self-ligating brackets are widely used in the clinical field of dental appliances. Compared with the traditional fixing appliance, the self-locking bracket saves the complicated operation of ligating archwires, creates a low-friction light-force correction environment, and greatly saves the operation time beside a chair in clinical application, thereby being favored by dentists.

Self-ligating brackets can be generally divided into two main categories, active and passive: the active self-locking bracket uses an elastic movable component to enable the archwire to be embedded into the bracket groove, the elastic component limits the archwire in the bracket, and meanwhile, the energy can be stored and gradually released, continuous light force is transmitted to the teeth and the supporting structure, accurate and controllable movement is generated, and therefore torque expression of the teeth in the groove is effectively controlled.

The locking plate of the passive self-locking bracket is not contacted with the orthodontic archwire, so that the orthodontic archwire can slide in the slot to control the movement of teeth, and most of the self-locking brackets adopt passive structures.

At present, a passive self-locking bracket is generally adopted in the tooth correction process during the early tooth arrangement, and an active self-locking bracket is adopted in the later root control process. So clinicians often need to replace brackets at different stages of the correction, not only is the operation inconvenient, but also the correction cost for the patient is high.

Disclosure of Invention

The invention aims at solving the problems, and provides the self-locking bracket capable of realizing active and passive self-locking at the same time, and the self-locking mode can be changed by only changing the size of the archwire penetrating through the bracket, so that the operation is very convenient and quick.

In order to achieve the above purpose, the present invention adopts the following technical scheme: the novel active and passive self-locking bracket comprises a bracket parent body, wherein the bracket parent body is provided with an arch wire groove, two sides of the arch wire groove are provided with working wings, one side of the working wings is provided with a sliding groove, a sliding lock plate is arranged in the sliding groove, two sides of the sliding lock plate are provided with a first lock plate sliding bar and a second lock plate sliding bar, two corresponding side walls of the sliding groove are provided with a first parent sliding groove and a second parent sliding groove, and the first lock plate sliding bar and the second lock plate sliding bar respectively slide in the first parent sliding groove and the second parent sliding groove; the sliding groove is also internally provided with a locking mechanism which is positioned below the sliding lock piece and is used for providing a locking force for the locking end of the sliding lock piece downwards and inwards when the sliding lock piece is in a locking state.

Above-mentioned novel initiative passive auto-lock bracket, locking mechanism includes locking hook and the elastic support piece that is located the slip locking plate below: one end of the locking hook is movably hinged on the bracket parent body; the elastic supporting piece is positioned below the locking hook and is used for supporting the other end of the locking hook; and the upper surface of one end of the locking hook supported by the elastic support piece is also provided with a locking structure matched with the sliding lock piece, and the locking structure is used for locking and limiting the sliding lock piece.

Above-mentioned novel initiative passive auto-lock bracket, locking structure includes: the locking stop block is arranged at one end of the upper surface of the locking hook, and the locking plate notch is correspondingly arranged at the sliding end of the sliding locking plate, and the locking stop block and the locking plate notch are matched to realize locking limit.

Above-mentioned novel initiative passive auto-lock bracket, locking hook activity articulates the side at parent one end has locking hook pinhole, and corresponding parent articulated department also is provided with first parent pinhole and second parent pinhole, and the locating pin runs through in first parent pinhole, second parent pinhole and the locking hook pinhole, realizes the activity of locking hook and bracket parent and articulates.

The novel active and passive self-locking bracket is characterized in that a first locking hook positioning shaft and a second locking hook positioning shaft are arranged on the side edge of one end of a parent body in a movable hinge mode; the corresponding bracket parent body hinge position is also provided with a first parent body clamping groove and a second parent body clamping groove; the first locking hook positioning shaft and the second locking hook positioning shaft are respectively clamped into the first parent clamping groove and the second parent clamping groove to realize movable hinging of the locking hook and the bracket parent.

Above-mentioned novel initiative passive auto-lock bracket, elastic support spare is the spring: one end of the spring is arranged on the bottom surface of the chute, and the other end of the spring is arranged on the bottom surface of the locking hook and used for supporting the other end of the locking hook.

The lower bottom surface of the first parent sliding groove and the lower bottom surface of the second parent sliding groove are inclined downwards in the direction away from the archwire groove; the upper groove surface of the first parent sliding groove and the upper groove surface of the second parent sliding groove are inclined upwards in the direction away from the archwire groove.

The novel active and passive self-locking bracket is characterized in that a locking positioning groove is formed in one side groove wall of the arch wire groove.

Above-mentioned novel initiative passive auto-lock bracket, sliding lock piece upper surface still is provided with locking plate circular arc concave surface, and locking plate circular arc concave surface slides into the locking constant head tank along the notch border of locking constant head tank to provide inwards decurrent effort to sliding lock piece locking end.

Above-mentioned novel initiative passive auto-lock bracket, the middle part of locking constant head tank still is provided with horizontal spacing lug, and the sliding lock piece locking end that corresponds is provided with horizontal locking groove.

Compared with the prior art, the invention has the advantages that:

because the locking hook structure is arranged below the sliding lock plate, the sliding lock plate has a certain vertical displacement space, and meanwhile, active self-locking can be realized.

The spring can be replaced, and the service life of the bracket can be prolonged.

The sliding groove is horn-shaped, the upper part of the sliding groove can be clamped, and the sliding groove interacts with the spring to transmit a downward locking force to the sliding lock plate.

Under the active self-locking condition, the bracket of the invention locks the thick wire downwards and inwards by the sliding lock plate, the clearance angle between the thick wire and the groove is minimum, and the acting force can be stronger and more stable.

According to the bracket, the middle part of the locking positioning groove of the sliding lock plate is also provided with the transverse limiting convex block, and the corresponding locking end of the locking plate is provided with the transverse locking groove, so that the sliding lock plate is further transversely limited by the structure.

Drawings

Fig. 1 is a schematic structural diagram of a novel active and passive self-locking bracket provided in embodiment 1 of the present invention.

Fig. 2 is a schematic view of the bracket precursor structure of fig. 1 without the slide lock tab and locking hook.

Fig. 3 is a schematic view of the structure of the slide lock piece.

Fig. 4 is a schematic view of the bottom surface structure of the slide lock tab.

Fig. 5 is a schematic view of the structure of the locking hook.

Fig. 6 is a side view of the locking hook.

Fig. 7 is a use state diagram of the passive self-locking closing of the novel active and passive self-locking brackets of the embodiment 1 by using the filament A.

Fig. 8 is a side view of fig. 7.

Fig. 9 is a use state diagram of the active self-locking closing of the novel active and passive self-locking bracket of the embodiment 1 by using the thick wire B.

Fig. 10 is a side view of fig. 9.

Fig. 11 is a state diagram of the embodiment 1 when the slide lock piece is fully opened.

Fig. 12 is a schematic view of the structure of the locking hook of embodiment 2.

Fig. 13 is a schematic view showing a parent structure in which the slide lock piece and the locking hook are not provided in embodiment 2.

Fig. 14 is a schematic diagram of a parent structure in which a locking hook is provided in embodiment 2.

Fig. 15 is a schematic diagram showing the structure of a base body in which only a spring is provided in embodiment 3.

Fig. 16 is a cross-sectional view of fig. 15.

Fig. 17 is a schematic view of the structure of the locking hook of embodiment 3.

Fig. 18 is a schematic view of another embodiment of the locking hook of example 3.

In the drawing, a bracket body 1, a first body runner 11, a second body runner 12, a first body runner 13, a second body runner 14, a slide lock piece locking positioning groove 15, a lateral limit projection 16, a first body clamping groove 17, a second body clamping groove 18, a slide lock piece 2, an unlocking positioning groove 21, a second lock piece sliding bar 22, a first lock piece sliding bar 23, a lock piece notch 24, a lock piece circular arc concave surface 25, an unlocking groove 26, a lateral lock groove 27, a bracket bottom plate 3, a locking hook 4, a locking stopper 41, a locking hook body 43, a locking hook runner 42, a first locking hook positioning shaft 44, a second locking hook positioning shaft 45, a blocking bar 46, a spring 5, a positioning pin 6, an archwire groove 7, a runner 8, an upper step surface 81, a lower step surface 82, a spring accommodating hole 83, a concave accommodating hole 84, and a guide bar 85.

Detailed Description

The following are specific embodiments of the invention and the technical solutions of the invention will be further described with reference to the accompanying drawings, but the invention is not limited to these embodiments.

As shown in figure 1, the novel active and passive self-locking bracket comprises a bracket bottom plate 3 and a bracket parent body 1, wherein an arch wire groove 7 is formed in the bracket parent body 1, working wings are arranged on two sides of the arch wire groove 7, and a sliding groove 8 is formed in one working wing. As shown in fig. 2, the bottom of the chute 8 has an upper step surface 81 and a lower step surface 82, the upper step surface 81 is provided with a spring accommodating hole 83, and two through holes perpendicular to the side wall surfaces, namely, the first parent pin hole 13 and the second parent pin hole 14, are respectively formed in two side walls of the lower step surface 82. The first and second parent pin holes 13 and 14 are engaged with the locking hook pin holes 42 on the locking hooks 4. As shown in fig. 1, the locking pin 6 is further included, and the locking pin 6 penetrates through the first parent pin hole 13, the second parent pin hole 14 and the locking hook pin hole 42.

As shown in fig. 5 and 6, the locking hook 4 includes a locking hook body 43, a locking stopper 41, and a locking hook pin hole 42. The locking hook 4 has a locking hook pin hole 42 at one end and a locking stop 41 at the other end, and the locking hook pin hole 42 is hinged and fixed with the first parent pin hole 13 and the second parent pin hole 14 on the side wall of the lower step surface 82 in the parent chute 8 through the same positioning pin 6. The entire locking hook 4 is thus rotatably connected in the slot 8 of the bracket body 1. The locking stopper 41 is convexly provided on the upper surface of the locking hook body 43. The surface of the whole locking stop 41 is in a smooth arc shape, so that the sliding lock plate 2 can conveniently slide across the whole locking stop 41 when being opened.

As shown in fig. 2, a first parent sliding groove 11 and a second parent sliding groove 12 are respectively arranged on two side walls of the sliding groove 8; correspondingly, as shown in fig. 3, the two sides of the sliding lock piece 2 are provided with a second lock piece sliding bar 22 and a first lock piece sliding bar 23. The first locking piece slide 23 is engaged with the first parent chute 11, and the second locking piece slide 22 is engaged with the second parent chute 12, so that the sliding locking piece 2 can slide along the first parent chute 11 and the second parent chute 12. The inlets of the first parent body chute 11 and the second parent body chute 12 of the further parent bodies are provided with horn-shaped openings. The lower bottom surface 111 of the first parent sliding groove 11 and the lower bottom surface 121 of the second parent sliding groove 12 are respectively inclined downwards in a direction away from the archwire groove, i.e. the

lower bottom surfaces

111 and 121 of the first parent sliding groove are inclined planes. Such a bevel facilitates the loading of the slide lock tab 2. And the upper slot surface 112 of the first parent slot 11 and the upper slot surface 122 of the second parent slot 12 may also be simultaneously disposed to be upwardly inclined in a direction away from the archwire slot, respectively. That is, the first upper groove surface 112 of the first parent sliding groove and the second upper groove surface 122 of the second parent sliding groove are inclined planes, and the inclination is just matched with the stress of the sliding lock plate 2 in the active locking state, that is, the inclined planes can further provide the downward locking force for the sliding lock plate, so that the self-locking force of active self-locking is enhanced. In particular, the tilt angle is adjusted according to the total thickness of the slide lock tab and the locking hook. In summary, the arrangement of the inclination angle facilitates the loading of the sliding lock piece. At the same time, the upper surfaces of the first parent sliding groove 11 and the second parent sliding groove 12 are respectively arranged in an upward inclined way in the direction away from the archwire groove, and a downward acting force is further generated when the sliding lock plate is locked.

As shown in fig. 1, since the spring receiving hole 83 is provided on the upper stepped surface 81 in the chute 8, one end of the spring 5 is fixed in the spring receiving hole 83, and the other end is abutted against the lower surface of the lock stopper 41 of the lock hook 4. A stop strip 46 is also provided on the lower surface for blocking the spring.

A sliding lock plate 2 is arranged above the further locking hook 4 in a matched manner, the sliding lock plate 2 is provided with a sliding-in end and a locking end, and the upper surface of the locking end is provided with a lock plate arc concave surface 25; the slide-in end has a locking tab notch 24, said locking tab notch 24 cooperating with a locking stop 41 on the locking hook 4. When the sliding lock piece 2 is in the completely closed state, the locking stop 41 is just clamped at the position of the lock piece notch 24, and limiting is performed.

Further, an unlocking positioning groove 21 is further formed in the lower surface of the sliding lock piece 2, when the sliding lock piece 2 is in a fully opened state, the locking stop 41 is finally limited in the unlocking positioning groove 21 along with the sliding of the sliding lock piece 2, and meanwhile the sliding lock piece 2 is fully opened.

As shown in fig. 2, a sliding lock plate locking and positioning groove 15 is arranged on the side wall of the archwire slot 7 on the side of the working wing where the sliding groove 8 is not arranged, and a transverse limit bump 16 is further arranged in the middle of the sliding lock plate locking and positioning groove 15. Correspondingly, as shown in fig. 4, the locking end of the sliding lock piece 2 is further provided with a transverse locking groove 27 which is matched with the transverse limit bump 16. As shown in fig. 10, when the slide lock piece 2 slides into the slide groove 8 to the lock position, the lock piece circular arc concave surface 25 of the slide lock piece 2 partially or completely slides into the slide lock piece lock positioning groove 15 along the notch edge of the lock positioning groove 15. The inward downward force on the locking end of the slide lock tab 2 is further provided by the interaction of the notch edge of the locking detent 15 with the arcuate concave surface 25 of the lock tab. At the same time, the lateral limit projections 16 snap into the lateral locking grooves 27. The lateral limit projection 16 is clamped into the lateral locking groove 27, so that the sliding lock plate 2 is further laterally limited.

As shown in fig. 3, the locking end of the slide lock piece 2 is further provided with an unlocking groove 26, and when the slide lock piece 2 needs to be opened, the slide lock piece 2 is opened using a tool placed in the unlocking groove 26.

The assembly process of the bracket is as follows:

the end of the locking hook 4 with the locking hook pin hole 42 is arranged in the first parent pin hole 13 and the second parent pin hole 14 of the parent body, and after the positioning pin 6 is penetrated, the locking hook 4 is hinged with the bracket parent body 1. At this time, the locking hook 4 can rotate upward around the positioning pin 6 (at this time, the locking hook 4 can rotate in a large range), then the spring 5 is installed, then the locking hook 4 is rotated downward to press the spring 5, then the sliding lock piece 2 is installed, the rotation range of the locking hook 4 is greatly reduced after the sliding lock piece 2 is installed, and meanwhile the spring 5 is limited. Under the action of the spring 5, the slide lock piece 2 can only move up and down to a certain extent in the limited space in the first and second

parent sliding grooves

11 and 12.

The use method of the bracket is as follows:

as shown in fig. 7, during the early tooth discharge, filament a, i.e., the finer archwire, is threaded and, when filament a is threaded and locked, filament a is not in contact with slide lock tab 2, as shown in fig. 8. The sliding lock piece 2 will not actively exert pressure on the archwire a, and the brackets can be aligned quickly like a typical passive self-locking bracket.

In the process of later root control, as shown in fig. 9, when the thick wire B (i.e. the arch wire with a larger diameter) is penetrated, the sliding lock plate 2 is lifted by the arch wire, and as shown in fig. 10, the sliding lock plate 2 in turn generates a reaction force on the arch wire B, so that an active self-locking effect is achieved. Further, as shown in fig. 10, a clearance angle a is created between the archwire and the archwire slot because the sliding lock plate 2 reacts to the archwire B to force the thick wire B inwardly and downwardly toward the direction of the locking plate. Because the upper surface of the sliding lock plate 2 is also provided with the lock plate arc concave surface 25, the lock plate arc concave surface 25 is matched with the upper end surface of the sliding lock plate locking positioning groove 15, and the force c of the sliding lock plate 2 to the thick wire B is better locked in the inward and downward directions. Compared with the existing active self-locking sliding lock plate, the active self-locking sliding lock plate can only apply downward active force to the archwire, so that inward force is increased, and the clearance angle a between the thick wire B and the wall of the archwire is greatly reduced. Namely, the self-locking bracket of the invention further stabilizes the downward inward force c due to the fact that the locking mechanism below the sliding lock plate gives downward and inward force to the sliding lock plate, and meanwhile, the upper end of the locking positioning groove 15 of the sliding lock plate is matched with the arc concave surface 25 of the locking plate, so that the self-locking bracket has no effect in the existing active self-locking bracket.

In the use process, if the lock cannot be well locked after long-time use, the normal use is of course not performed. In the event of this, the structure of the present invention can restore the locking plate closing force by simply replacing the spring member. The replacement is convenient, and the service life is greatly prolonged.

Example 2

Other structures of this embodiment are the same as those of embodiment 1, except that: the locking hook has a different matching structure from the parent body, in this embodiment, one end of the locking hook is not provided with a locking hook pin hole, but as shown in fig. 12, the two ends of the locking hook body 43 are directly provided with a first locking hook positioning shaft 44 and a second locking hook positioning shaft 45; correspondingly, as shown in fig. 13, a first mother card slot 17 and a second mother card slot 18 are provided on the mother body. As shown in fig. 14, the locking hook 4 is hinged by the first locking hook positioning shaft 44 and the second locking hook positioning shaft 45 being respectively clamped into the first parent clamping groove 17 and the second parent clamping groove 18, so that the locking hook 4 and the bracket parent 1 are assembled.

Example 3

Other structures of this embodiment are the same as those of embodiment 1, except that: the arrangement modes of the elastic supporting member springs are different, specifically, as shown in fig. 15, the spring accommodating holes are formed as concave accommodating holes 84 shown in fig. 15, meanwhile, guide rods 85 are arranged in the concave accommodating holes 84, and the springs are sleeved on the guide rods 85, so that stability is improved. Correspondingly, as shown in fig. 17, the lower surface of the locking hook 4 where the other end of the spring is located may also be provided with a spring positioning hole 46 to further fix the spring. As shown in fig. 18, the lower surface of the locking hook 4 at the other end of the spring may be provided with a spring positioning protrusion 47, and the protrusion 47 may be in a convex rounded point shape, or may be in other shapes, so long as the shape for positioning the spring is convenient, and the shape is not limited to the rounded point shape.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. Novel initiative is passive from locking-bracket, including holding in the palm groove parent (1), hold in the palm groove parent (1) have archwire slot (7), and archwire slot (7) both sides have the working wing, are provided with spout (8) on one of them side working wing, are provided with in spout (8) and slide locking plate (2), its characterized in that: the two sides of the sliding lock plate (2) are provided with a first lock plate slide bar (23) and a second lock plate slide bar (22), two side walls of the corresponding sliding groove (8) are provided with a first parent sliding groove (11) and a second parent sliding groove (12), and the first lock plate slide bar (23) and the second lock plate slide bar (22) respectively slide in the first parent sliding groove (11) and the second parent sliding groove (12); the sliding groove (8) is internally provided with a locking mechanism which is positioned below the sliding lock plate (2) and is used for providing a locking force for the locking end of the sliding lock plate downwards and inwards when the sliding lock plate (2) is in a locking state; the locking mechanism comprises a locking hook (4) and an elastic supporting piece, wherein the locking hook is positioned below the sliding lock piece (2): one end of the locking hook (4) is movably hinged on the bracket parent body (1); the elastic supporting piece is positioned below the locking hook (4) and is used for supporting the other end of the locking hook (4); and the upper surface of one end of the locking hook (4) supported by the elastic support piece is also provided with a locking structure matched with the sliding lock piece (2), and the locking structure is used for locking and limiting the sliding lock piece (2).

2. The novel active passive self-ligating bracket of claim 1 wherein said locking structure comprises: the locking stop block (41) is arranged at one end of the upper surface of the locking hook (4), and the locking notch (24) is correspondingly arranged at the sliding-in end of the sliding locking piece (2), and the locking stop block (41) and the locking notch (24) are matched to realize locking limit.

3. The novel active and passive self-locking bracket as claimed in claim 2, wherein the locking hook (4) is movably hinged to the side edge of one end of the parent body, a locking hook pin hole (42) is formed in the corresponding parent body hinge position, a first parent body pin hole (13) and a second parent body pin hole (14) are also formed in the corresponding parent body hinge position, and the positioning pin (6) penetrates through the first parent body pin hole (13), the second parent body pin hole (14) and the locking hook pin hole (42) to realize movable hinge of the locking hook (4) and the bracket parent body (1).

4. The novel active and passive self-locking bracket according to claim 2, wherein the side edge of the locking hook (4) movably hinged to one end of the parent body is provided with a first locking hook positioning shaft (44) and a second locking hook positioning shaft (45); a first parent clamping groove (17) and a second parent clamping groove (18) are also arranged at the hinge position of the corresponding bracket parent (1); the first locking hook positioning shaft (44) and the second locking hook positioning shaft (45) are respectively clamped into the first parent clamping groove (17) and the second parent clamping groove (18) to realize movable hinging of the locking hook (4) and the bracket parent (1).

5. The novel active passive self-locking bracket according to claim 1, characterized in that the elastic support is a spring (5): one end of the spring (5) is arranged on the bottom surface of the chute (8), and the other end of the spring is arranged on the bottom surface of the locking hook (4) and used for supporting the other end of the locking hook (4).

6. The novel active passive self-ligating bracket of any of claims 1-5 wherein the first parent chute lower bottom surface (111) and the second parent chute lower bottom surface (121) are both sloped downwardly away from the archwire slot (7); the upper groove surface (112) of the first parent body chute and the upper groove surface (122) of the second parent body chute are both inclined upwards in the direction away from the archwire groove (7).

7. A novel active passive self-ligating bracket according to any one of claims 1 to 5 wherein a locking detent (15) is provided on a slot wall (71) on one side of the archwire slot (7).

8. The novel active and passive self-locking bracket according to claim 7, wherein the upper surface of the sliding lock plate (2) is further provided with a lock plate arc concave surface (25), and the lock plate arc concave surface (25) slides into the locking positioning groove (15) along the notch edge of the locking positioning groove (15), so as to provide inward and downward acting force on the locking end of the sliding lock plate (2).

9. The novel active and passive self-locking bracket according to claim 8, wherein the middle part of the locking positioning groove (15) is further provided with a transverse limiting lug (16), and the locking tail end of the corresponding sliding lock plate (2) is provided with a transverse locking groove (27).