CN114305758A - Push type self-ligating bracket - Google Patents

Abstract

The application relates to an orthodontic medical instrument in oral cavity especially relates to a push type self-ligating bracket, and its technical scheme main points are: the bracket comprises a bracket body and a sliding locking plate, wherein the bracket body is provided with an arch wire groove; the sliding lock piece is provided with a closing and locking groove and an opening and closing lock groove with openings facing away from the arch wire groove; the bracket body is provided with a locking block which can switch the position between the opening and closing locking groove and the closing locking groove; the bracket body is provided with a force application piece which is used for applying acting force to the locking block so that the locking block can be maintained in the opening and closing locking groove or the closing locking groove; the sliding lock piece is provided with a closed transition groove, an opening and closing transition groove, a first opening and closing channel for communicating the opening and closing transition groove with the closed lock groove, a second opening and closing channel for communicating the opening and closing transition groove with the opening and closing lock groove, a first closed channel for communicating the opening and closing lock groove with the closed transition groove, and a second closed channel for communicating the closed transition groove with the closed lock groove; the purpose of facilitating the opening and closing of the arch wire groove to save the operation time of the orthodontist is achieved.

Description

Push type self-ligating bracket

Technical Field

The application relates to an orthodontic medical appliance, in particular to a push type self-locking bracket.

Background

The self-ligating bracket is a main component in the fixed appliance, and the lock catch of the bracket needs to be opened for many times in the clinical correction period process, and the arch wire needs to be readjusted, polished, bent or directly replaced.

The self-ligating bracket in the related art comprises a bracket main body, a base plate fixed on the bracket main body and an arch wire groove arranged on one side of the bracket main body, which is far away from the base plate, wherein the arch wire groove is used for embedding a main arch wire therein so as to fix the bracket main body and the main arch wire; in order to ensure the installation stability between the main arch wire and the bracket body, a sliding locking plate for closing or opening the arch wire groove is arranged on the bracket body; when the archwire slot needs to be opened and closed, an orthodontist needs to utilize a matched unlocking tool to open and close the lock catch, the operation is complex, the clinical process beside the chair is durable, the operation time of the orthodontist is prolonged, and the correction effect is influenced.

Disclosure of Invention

In order to facilitate the opening and closing of the arch wire groove so as to save the operation time of an orthodontist, the application provides a push type self-locking bracket.

The application provides a push type self-ligating bracket adopts following technical scheme:

a push type self-locking bracket comprises a bracket main body and a sliding locking plate, wherein an arch wire groove is formed in the bracket main body, a locking groove and an opening and closing locking groove with openings facing away from the arch wire groove are formed in the sliding locking plate, and the distance between the locking groove and the arch wire groove is larger than that between the opening and closing locking groove and the arch wire groove; the bracket body is provided with a locking block which can switch positions between an opening and closing locking groove and a closing locking groove, and the moving direction of the locking block has a component along the sliding direction of the sliding locking plate; the bracket body is provided with a force application piece which is used for applying acting force to the locking block so that the locking block can be maintained in the opening and closing locking groove or the closing locking groove; the sliding lock piece is provided with a closed transition groove, an opening and closing transition groove, a first opening and closing channel for communicating the opening and closing transition groove with the closed lock groove, a second opening and closing channel for communicating the opening and closing transition groove with the opening and closing lock groove, a first closed channel for communicating the opening and closing lock groove with the closed transition groove, and a second closed channel for communicating the closed transition groove with the closed lock groove; when the locking block is initially positioned in the closed locking groove and the sliding locking plate slides in the direction far away from the arch wire groove, the locking block sequentially passes through the first opening-closing channel, the opening-closing transition groove and the second opening-closing channel to enter the opening-closing locking groove; when the locking block is initially positioned in the opening and closing locking groove and the sliding locking plate slides towards the direction close to the arch wire groove, the locking block sequentially passes through the first closed channel, the closed transition groove and the second closed channel to enter the closed locking groove.

By adopting the technical scheme, when the initial position of the locking block is positioned in the closed locking groove and the sliding locking plate is required to open the arch wire groove, the sliding locking plate is pressed towards the direction of the force application part so as to move towards the direction close to the arch wire groove, in the process, the sliding locking plate overcomes the acting force of the force application part, and on the basis of the sliding locking plate, all groove walls on the sliding locking plate apply acting force on the locking block, the locking block generates a motion component along the horizontal direction, the locking block sequentially passes through the closed locking groove, the first opening and closing channel, the opening and closing transition groove and the second opening and closing channel to enter the opening and closing locking groove, and is stably retained in the opening and closing locking groove under the action of the force application part, and then the sliding locking plate is separated from the arch wire groove; when the initial position of the lock block is positioned in the opening and closing lock groove and the sliding lock plate needs to be made to close the arch wire groove, the sliding lock plate is pressed towards the direction of the force application part until the sliding lock plate is separated from the opening and closing lock groove and enters the first closed channel, the force application part continuously applies thrust force deviating from the direction of the force application part to the sliding lock plate in the process, the sliding lock plate is taken as a reference, all groove walls on the sliding lock plate apply acting force to the lock block, the lock block generates motion components along the horizontal direction, the lock block sequentially passes through the opening and closing lock groove, the first closed channel, the closed transition groove and the second closed channel and enters the closed lock groove, the lock block is stably retained in the closed lock groove under the action of the force application part, and the sliding lock plate continuously closes the arch wire groove; the whole process does not need to additionally use unlocking tools, and the opening and closing of the arch wire groove can be realized only by pressing the sliding locking plate, so that the opening and closing of the arch wire groove are facilitated, and the operation time of an orthodontist is saved.

Optionally, a guide groove is formed in the sliding lock piece, a guide block located inside the guide groove is formed in the sliding lock piece, the opening-closing lock groove is located on the guide groove, the closing lock groove is formed in the guide block, and the closing transition groove, the opening-closing transition groove, the first opening-closing channel, the second opening-closing channel, the first closing channel and the second closing channel are formed between the groove wall of the guide groove and the circumferential surface of the guide block.

By adopting the technical scheme, the clamping area between the groove wall of the guide groove and the circumferential surface of the guide block is each channel for the locking block to switch the position between the opening and closing locking groove and the closing locking groove.

Optionally, a first guide surface is arranged between the opening/closing transition groove and the closed transition groove, the first guide surface extends into the first opening/closing channel, and one end of the first guide surface, which is far away from the opening/closing transition groove, is located on one side of the closed lock groove, which is close to the closed transition groove.

Through adopting above-mentioned technical scheme, when applying the pressure to being close to the direction of archwire slot to the sliding lock piece, first spigot surface laminating is close to the one side of closing the aqueduct at the locking piece, and first spigot surface promotes the locking piece and slides along first spigot surface, and inside until the locking piece enters into first passageway that opens and shuts, and then prevent that the locking piece from entering into closing the aqueduct by mistake inside.

Optionally, a second guide surface is arranged on one side of the closed locking groove close to the opening and closing transition groove, the second guide surface extends towards the opening and closing transition groove, and one end of the second guide surface, which is far away from the closed locking groove, is located on one side of the opening and closing transition groove close to the closed transition groove.

By adopting the technical scheme, in the process that the lock block moves from the closed lock groove to the opening and closing transition groove, the lock block needs to pass through the first opening and closing channel and then moves from the opening and closing transition groove to the inside of the opening and closing lock groove through the second opening and closing channel, after the lock block is positioned in the opening and closing transition groove, one end, far away from the closing and closing groove, of the second guide surface abuts against one side, close to the closing and closing groove, of the lock block, if acting force along the sliding direction of the sliding lock plate is applied to the sliding lock plate at the moment, the end part of the second guide surface abuts against the lock block to block from returning to the inside of the first opening and closing channel, the end part of the second guide surface slides to the inside of the second opening and closing channel, and then the lock block is effectively prevented from returning to the inside of the closing and closing lock groove at the moment when the opening and closing transition groove moves to the inside of the opening and closing lock groove.

Optionally, a third guide surface is arranged on one side of the opening and closing locking groove, which is close to the closing and locking groove, and the third guide surface extends into the first closed channel; one end of the third guide surface, which is close to the opening and closing lock groove, is positioned at one side of the opening and closing lock groove, which is close to the second opening and closing channel.

Through adopting above-mentioned technical scheme, when the locking piece initial position was located the locked groove that opens and shuts inside, press down the sliding lock piece so that the effort that the sliding lock piece overcame the application of force piece removes to the direction that is close to the archwire groove, the laminating of third spigot surface is on the locking piece at this in-process to pour the locking piece into to first closed passage is inside, and then prevent that the locking piece from opening and shutting inside entering into the second passageway that opens and shuts wrongly of locked groove.

Optionally, a fourth guide surface is arranged on one side of the closed lock groove close to the closed transition groove, and one end of the fourth guide surface close to the closed transition groove is located on one side of the closed transition groove far away from the opening transition groove.

By adopting the technical scheme, after the locking piece enters the closed transition groove, one side of the fourth guide surface, which is close to the closed transition groove, abuts against the locking piece, and the fourth guide surface guides the locking piece into the second opening and closing channel under the continuous force application effect of the force application piece, so that the locking piece is prevented from returning to the inside of the first closed channel from the inside of the closed transition groove.

Optionally, one side of the bracket main body far away from the sliding locking plate is hinged with a transmission rod, the transmission rod can swing in a plane parallel to the sliding direction of the sliding locking plate, the locking block is formed or fixed on the transmission rod, and a first abdicating hole for the transmission rod to pass through is formed in the bracket main body.

Through adopting above-mentioned technical scheme, the guide way is in order to make the locking piece motion with the guide block application of force to the locking piece, and the locking piece is to the transmission rod application of force at this in-process, and the transmission rod swings around self and the pin joint of holding in the palm the groove main part.

Optionally, a guide hole is formed in the bracket main body, a guide strip embedded into the guide hole is formed in the sliding lock piece, and the guide strip can move in the guide hole along the sliding direction of the sliding lock piece.

By adopting the technical scheme, on one hand, the sliding lock plate plays a role in guiding the sliding of the sliding lock plate, and the sliding lock plate is prevented from deflecting relative to the self-preset sliding direction; on the other hand, the sliding lock sheet is prevented from being separated from the bracket body to cause the bracket to fail.

Optionally, the bracket further comprises a base plate and a support platform formed or fixed on the bracket main body, wherein the support platform is positioned between the base plate and the bracket main body, and the base plate is fixed on the support platform; the support table is provided with a second abdicating hole for providing space for the swing of the transmission rod.

By adopting the technical scheme, when the bracket is assembled, the sliding locking plate is firstly installed on the bracket main body, and meanwhile, the guide strip slides into the guide groove; then the transmission rod is arranged on the bracket main body, and the locking block extends into a gap between the guide groove and the guide block; and finally, welding the base plate on a support table, wherein the support table is used for connecting the base plate and the bracket main body on one hand and is used for providing space for the swinging of the transmission rod on the other hand, so that the base plate is prevented from blocking the movement of the transmission rod.

Optionally, the force application part is a supporting elastic sheet capable of generating elastic deformation in the sliding direction of the sliding locking plate, a clamping strip connected with the bracket main body in a sliding manner is formed at two ends of the supporting elastic sheet, and the clamping strip can slide on the bracket main body along the deformation direction perpendicular to the supporting elastic sheet.

Through adopting above-mentioned technical scheme, the in-process that supports the shell fragment is pressed to the tip of sliding lock piece, supports the shell fragment and applys lasting reverse elasticity to sliding lock piece, and then makes the cell wall of guide way or the global of guide block can and the locking piece between produce the extrusion, and the change in the size when this in-process joint strip slides in order to adapt to support the shell fragment and produce elastic deformation in holding in the palm the groove main part.

In summary, the present application has the following technical effects:

1. by arranging the locking block, the force application part, the guide groove and the guide block, the opening and closing process of the arch wire groove can be realized by only pressing the sliding locking plate without additionally using an unlocking tool, so that the opening and closing of the arch wire groove are facilitated, and the operation time of an orthodontist is saved;

2. through having set up first spigot surface, second spigot surface, third spigot surface and fourth spigot surface for the motion of locking piece between the cell wall of guide way and the global of guide piece is the motion of one-way definite, and then can realize opening and shutting of archwire groove reliably when guaranteeing to press the sliding lock piece.

Drawings

FIG. 1 is a schematic view of the overall structure of a self-ligating bracket of a push type in an embodiment of the present application;

FIG. 2 is a schematic diagram illustrating an exploded view of a push type self-ligating bracket according to an embodiment of the present application;

FIG. 3 is a schematic view of the bracket body and support table of an embodiment of the present application on a side adjacent to a base plate, not shown;

FIG. 4 is a schematic structural view of a side of the slide fastener near the sliding surface in the embodiment of the present application;

fig. 5 is a schematic structural view of the locking piece in the embodiment of the present application between the groove wall of the guide groove and the circumferential surface of the guide piece, which corresponds to the state when the locking piece is located inside the locking groove;

fig. 6 is a schematic structural view of the locking piece between the groove wall of the guide groove and the circumferential surface of the guide piece in the embodiment of the present application, which corresponds to the state when the locking piece is located inside the opening/closing transition groove;

fig. 7 is a schematic structural view of the locking piece between the groove wall of the guide groove and the circumferential surface of the guide piece in the embodiment of the present application, which corresponds to the state when the locking piece is located inside the opening and closing locking groove;

fig. 8 is a schematic structural view of the locking piece in the embodiment of the present application between the groove wall of the guide groove and the circumferential surface of the guide piece, which corresponds to the state when the locking piece is located inside the closed transition groove.

In the drawings, 1, a bracket body; 2. sliding the locking plate; 3. an arch wire groove; 4. sealing the locking groove; 5. opening and closing the locking groove; 6. a locking block; 7. supporting the elastic sheet; 8. sealing the transition groove; 9. opening and closing the transition groove; 10. a first opening and closing channel; 11. a second opening-closing channel; 12. a first enclosed channel; 13. a second enclosed channel; 14. a guide groove; 15. a guide block; 16. a first guide surface; 17. a second guide surface; 18. a third guide surface; 19. a fourth guide surface; 20. a transmission rod; 21. hinging a shaft; 22. a first abdicating hole; 23. a guide strip; 24. a guide hole; 25. a support table; 26. a second abdicating hole; 27. a base plate; 28. a clamping strip; 29. a clamping groove; 30. a yielding groove; 31. a sliding surface.

Detailed Description

In the description of the present application, it is to be noted that the terms "near", "far", "away", "facing", and the like are relative relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the process or module referred to must have a specific orientation, state, and operation, and thus, should not be construed as limiting the present invention.

The present application is described in further detail below with reference to the attached drawings.

Referring to fig. 1 and 2, the application provides a push type self-ligating bracket, which comprises a bracket body 1, an archwire slot 3 arranged on the bracket body 1, a sliding surface 31 which is arranged on the bracket body 1 and is arranged on one side of the archwire slot 3, a sliding locking plate 2 which can slide on the sliding surface 31 in a direction close to or far away from the archwire slot 3, and a base plate 27 which is fixedly connected on one side of the bracket body 1 far away from the archwire slot 3, wherein when the sliding locking plate 2 slides on the sliding surface 31 in a direction far away from the archwire slot 3, the opening degree of the archwire slot 3 is increased until one side of the archwire slot 3 is opened for placing a main archwire into the archwire slot 3; when the sliding lock plate 2 slides on the sliding surface 31 in a direction close to the archwire slot 3, the opening of the archwire slot 3 is gradually reduced until the sliding lock plate 2 covers and closes the archwire slot 3, and the main archwire is locked to the bracket body 1.

Referring to fig. 2 and 3, the bracket body 1 is provided with a locking piece 6 extending to the side of the sliding surface 31 close to the sliding locking piece 2, the locking piece 6 can move on the bracket body 1, and the movement of the locking piece 6 has a motion component in the direction perpendicular to the sliding direction of the sliding locking piece 2; specifically, the locking block 6 and the bracket body 1 can be in sliding connection, and the sliding direction of the locking block 6 is to translate on the sliding surface 31 along the sliding direction perpendicular to the sliding locking plate 2; in the present embodiment, the locking piece 6 can swing on a plane parallel to the sliding surface 31, specifically, the end of the locking piece 6 is provided with a transmission rod 20 located on one side of the bracket body 1 close to the base plate 27, the locking piece 6 is a cylindrical rod-shaped structure with an axis perpendicular to the sliding surface 31, the axis of the transmission rod 20 is parallel to the sliding surface 31, one end of the transmission rod 20 away from the locking piece 6 is provided with a hinge shaft 21 hinged on one side of the bracket body 1 close to the base plate 27, the hinge shaft 21 can be fixed-axis rotated around its own axis, and the locking piece 6, the transmission rod 20 and the hinge shaft 21 are integrally formed into a U-shaped structure; when the locking piece 6 is forced against the sliding surface 31, the transmission rod 20 transmits a torque to the articulated shaft 21, and the locking piece 6 swings on the sliding surface 31, with a component of movement on the sliding surface 31 which is perpendicular to the sliding direction of the sliding lock 2.

Referring to fig. 1 and 3, in order to prevent the base plate 27 from interfering with the swinging of the transmission rod 20, a support platform 25 formed on the bracket body 1 is arranged between the base plate 27 and the bracket body 1, a second abdicating hole 26 for providing a space for the transmission rod 20 to swing is formed in the support platform 25, and the second abdicating hole 26 may be a sector structure with the hinge shaft 21 as a center or a shape completely covering the swing swept area of the transmission rod 20; in addition, a first abdicating hole 22 for the locking block 6 to penetrate through between the bracket body 1 and the base plate 27 is formed in the bracket body 1, and the first abdicating hole 22 completely covers the swept area of the locking block 6 swinging around the hinging shaft 21; when the base plate 27 and the bracket body 1 need to be assembled, the hinge shaft 21 is inserted into the hinge point of the bracket body 1, the transmission rod 20 is placed in the second avoiding hole 26, the locking block 6 passes through the first avoiding hole 22, then the base plate 27 is attached to the support platform 25 and welded, and the base plate 27 closes the second avoiding hole 26.

Referring to fig. 4, a guide groove 14 is formed on one side of the sliding lock piece 2 close to the sliding surface 31, a guide block 15 located inside the guide groove 14 is formed, a channel continuously extending along the circumferential direction of the guide block 15 is formed between the circumferential surface of the guide block 15 and the groove wall of the guide groove 14, and the lock piece 6 is inserted into the channel and can move between the guide block 15 and the guide groove 14 (with the sliding lock piece 2 as a reference); specifically, the passage is divided into a closing and locking groove 4, an opening and closing transition groove 9, an opening and closing locking groove 5 and a closing transition groove 8. Wherein the connecting line between the closing locking groove 4 and the opening locking groove 5 is parallel to the sliding direction of the sliding locking plate 2, the closing locking groove 4 and the opening locking groove 5 both face away from the arch wire groove 3, and the closing locking groove 4 is positioned at one side of the opening locking groove 5 far away from the arch wire groove 3; the opening and closing transition groove 9 and the closing transition groove 8 are respectively positioned at two sides of the closing and locking groove 4, and the distance between the opening and closing transition groove 9 and the arch wire groove 3 and the distance between the closing transition groove 8 and the arch wire groove 3 are both larger than the distance between the closing and locking groove 4 and the arch wire groove 3.

Referring to fig. 4, a first opening and closing channel 10 for communicating the closed lock groove 4 and the opening and closing transition groove 9 is arranged between the closed lock groove 4 and the opening and closing transition groove 9, and the first opening and closing channel 10 is gradually far away from the archwire slot 3 along the direction from the closed lock groove 4 to the opening and closing transition groove 9; a second opening and closing channel 11 for communicating the opening and closing transition groove 9 and the opening and closing locking groove 5 is arranged between the opening and closing transition groove 9 and the opening and closing locking groove 5, and the second opening and closing channel 11 is gradually close to the arch wire groove 3 along the direction from the opening and closing transition groove 9 to the opening and closing locking groove 5; a first closed channel 12 for communicating the opening and closing lock groove 5 and the closed transition groove 8 is arranged between the opening and closing lock groove 5 and the closed transition groove 8, and the first closed channel 12 is far away from the arch wire groove 3 along the direction from the opening and closing lock groove 5 to the closed transition groove 8; a second closed channel 13 for communicating the closed transition groove 8 and the closed lock groove 4 exists between the closed transition groove 8 and the closed lock groove 4, and the second closed channel 13 is gradually close to the arch wire groove 3 along the direction from the closed transition groove 8 to the closed lock groove 4.

Referring to fig. 2 and 4, the bracket body 1 is provided with an abdicating groove 30 facing the sliding surface 31, and the groove bottom of the abdicating groove 30 is flush with the sliding surface 31; a force application piece is arranged in the abdicating groove 30, and when the force application piece is extruded by the sliding lock plate 2, the force application piece can apply thrust in the direction away from the force application piece to the sliding lock plate 2; when the sliding lock plate 2 is just attached to the force application part, the lock block 6 is embedded into the locking groove 4, and the sliding lock plate 2 completely covers the arch wire groove 3 to close the arch wire groove 3; when the locking piece 6 is embedded into the opening and closing lock groove 5, the end part of the sliding locking piece 2 is separated from the force application piece and the arch wire groove 3, and the arch wire groove 3 is opened.

Referring to fig. 5, 6 and 7, the locking block 6 is located inside the locking groove 4 as an initial position, at this time, the sliding locking plate 2 closes the archwire groove 3, when the sliding locking plate 2 needs to be separated from the archwire groove 3, the sliding locking plate 2 is pressed towards the direction close to the force application member, in this process, the locking block 6 slides towards the inside of the opening and closing transition groove 9 through the first opening and closing channel 10, and the force application member accumulates elastic potential energy; after the locking piece 6 enters the opening and closing transition groove 9, the pressing force is stopped being applied to the sliding locking plate 2, the force application piece releases elastic potential energy and pushes the sliding locking plate 2 to move towards the direction far away from the force application piece, in the process, the locking piece 6 slides to the inside of the opening and closing locking groove 5 through the second opening and closing channel 11, under the multiple factors of the groove wall limiting effect of the opening and closing locking groove 5, the supporting effect of the transmission rod 20, the sliding direction limitation of the sliding locking plate 2 and the like, the locking piece 6 is stably embedded in the opening and closing locking groove 5 in a normal state, and then the state of being separated from the arch wire groove 3 is kept under the condition that the sliding locking plate 2 is not continuously pressed.

Referring to fig. 5, 7 and 8, the locking piece 6 is located inside the opening and closing locking groove 5 as an initial position, at this time, the sliding locking plate 2 is separated from the archwire groove 3, when the sliding locking plate 2 is required to seal the archwire groove 3, the sliding locking plate 2 is pressed in a direction close to the force application part, in the process, the sliding locking plate 2 continuously moves in a direction close to the force application part until the sliding locking plate 2 presses the force application part, after the locking piece 6 enters the sealed transition groove 8 through the first sealed channel 12, the sliding locking plate 2 already passes through the archwire groove 3 and is lapped at the bottom of the receding groove 30, and the force application part already accumulates certain elastic potential energy; at this moment, the application of pressing force to the sliding lock plate 2 is stopped, the force application member releases elastic potential energy and pushes the sliding lock plate 2 to move towards the direction far away from the force application member, the lock block 6 slides to the inside of the closed locking groove 4 through the second closed channel 13 in the process, the sliding lock plate 2 just covers the arch wire groove 3 and the sliding lock plate 2 just fits with the force application member at this moment, the lock block 6 is stably embedded in the closed locking groove 4 in a normal state under multiple factors such as the groove wall limiting effect of the closed lock groove 4, the supporting effect of the transmission rod 20, the limiting effect of the force application member and the sliding direction limitation of the sliding lock plate 2 of the force application member, and the state of covering the arch wire groove 3 is kept under the condition that the sliding lock plate 2 is not continuously pressed.

The opening and closing process of the sliding locking plate 2 does not need an additional unlocking tool, and the opening and closing of the arch wire groove 3 can be realized only by pressing the sliding locking plate 2, so that the opening and closing of the arch wire groove 3 are facilitated, and the operation time of an orthodontist is saved.

Referring to fig. 4 and 5, in order to prevent the lock block 6 from entering the second closed channel 13 by mistake at the moment when the lock block 6 is about to move to the direction of the opening/closing transition groove 9 through the first opening/closing channel 10, a first guide surface 16 located between the opening/closing transition groove 9 and the closed transition groove 8 is formed on the wall of the guide groove 14 away from the archwire slot 3, the first guide surface 16 is also a side wall of the first opening/closing channel 10, the extending direction of the first guide surface 16 is the same as that of the first opening/closing channel 10, and one end of the first guide surface 16 away from the opening/closing transition groove 9 is located on one side of the closed lock groove 4 close to the closed transition groove 8; thus, when the sliding lock plate 2 is pressed, the first guide surface 16, namely the inner wall of the first opening and closing channel 10, is abutted against the lock block 6 and cannot enter the second closed channel 13, and along with the continuous pressing of the sliding lock plate 2, the lock block 6 continuously keeps the attaching state with the first guide surface 16 until the first guide surface enters the opening and closing transition groove 9.

Referring to fig. 4 and 6, after the locking piece 6 enters the opening and closing transition groove 9, the force application member stores a certain elastic potential energy, stops applying pressure to the sliding locking plate 2, releases the elastic potential energy to the sliding locking plate 2, in order to prevent the locking piece 6 from returning to the first opening and closing channel 10 mistakenly at this moment and not entering the second opening and closing channel 11, a second guide surface 17 is formed on one side of the guide block 15 departing from the archwire groove 3, and the second guide surface 17 is formed on the inner wall of the first opening and closing channel 10 at the same time and has the same extending direction as the first opening and closing channel 10; one end of the second guide surface 17, which is far away from the locking groove 4, is positioned on one side of the opening and closing transition groove 9, which is close to the closing transition groove 8, namely after the locking block 6 enters the opening and closing transition groove 9, the end point of the second guide surface 17 is abutted against one side of the locking block 6, which is close to the closing transition groove 8; when the force applying member releases the elastic potential energy, the end of the second guiding surface 17 will be squeezed with the locking block 6, and the end of the second guiding surface 17 will be abutted on the locking block 6 to prevent the locking block 6 from returning to the inside of the first opening/closing channel 10, and the locking block 6 will slide to the inside of the second opening/closing channel 11 along the inner wall of the second opening/closing channel 11 at the end of the second guiding surface 17, so as to effectively prevent the locking block 6 from returning to the inside of the locking groove 4 at the moment when the locking block 6 intends to move from the opening/closing transition groove 9 to the inside of the opening/closing locking groove 5.

Referring to fig. 4 and 7, in order to prevent the locking piece 6 from entering the second open/close channel 11 by mistake at the moment that the locking piece 6 is about to move to the direction of the closed transition slot 8 through the first closed channel 12, a third guide surface 18 is formed on one side of the guide piece 15 close to the archwire slot 3, the third guide surface 18 is the inner wall of the first closed channel 12 at the same time and extends in the same direction as the first closed channel 12, and one end of the third guide surface 18 close to the open/close locking slot 5 is positioned on one side of the open/close locking slot 5 close to the second open/close channel 11; thus, when the sliding locking plate 2 is pressed in the direction close to the biasing member, the third guide surface 18 first abuts against the locking piece 6 and moves with the third guide surface 18, and the third guide surface 18 pushes the locking piece 6 and causes the locking piece 6 to slide to the inside of the first closed passage 12 in the extending direction thereof, so that the locking piece cannot enter the second opening/closing passage 11 through the third guide surface 18.

Referring to fig. 4 and 8, after the locking piece 6 enters the closed transition groove 8, the force application member stores a certain elastic potential energy, stops applying pressure to the sliding locking plate 2, releases the elastic potential energy to the sliding locking plate 2, in order to prevent the locking piece 6 from returning to the first closed channel 12 by mistake at this moment and not entering the second closed channel 13, a fourth guide surface 19 is formed on one side of the guide block 15 departing from the archwire groove 3, the fourth guide surface 19 is formed on the inner wall of the second closed channel 13 at the same time and has the same extending direction as the second closed channel 13, and one end of the fourth guide surface 19 close to the closed transition groove 8 is positioned on one side of the closed transition groove 8 away from the open-close transition groove 9; when the force applying member releases the elastic potential energy, the fourth guiding surface 19 is attached to the locking piece 6, and with the continuous application of force by the force applying member, the locking piece 6 slides into the second closed channel 13 along the extending direction of the fourth guiding surface 19 and cannot return to the first closed channel 12 through the fourth guiding surface 19.

Referring to fig. 1 and 2, specifically, the force application member may be a spring whose axis is parallel to the sliding direction of the sliding lock plate 2, or may be a supporting elastic sheet 7 in this embodiment, the supporting elastic sheet 7 is disposed on a groove wall of the abdicating groove 30 facing the sliding surface 31, and the supporting elastic sheet 7 is protruded in a normal state in a direction close to the sliding surface 31, and when the supporting elastic sheet 7 is further pressed by the end portion of the sliding lock plate 2, the protruded portion of the supporting elastic sheet 7 is pressed to deform and can accumulate elastic potential energy; in addition, the both ends shaping of supporting shell fragment 7 has joint strip 28, offers on two cell walls that the groove 30 is relative and supplies joint strip 28 male joint groove 29, and joint strip 28 can move along the slip direction of perpendicular to sliding lock piece 2 in joint groove 29 is inside to the size change when adaptation supports shell fragment 7 and produces elastic deformation in the length direction of supporting shell fragment 7.

Referring to fig. 2, in addition, the bracket body 1 is provided with guide holes 24 located at two sides of the sliding surface 31, one sides of the guide holes 24 close to each other are open, guide strips 23 respectively inserted into the guide holes 24 are formed at two sides of the sliding lock plate 2, and the extending direction of the guide strips 23 is the sliding direction of the sliding lock plate 2; on one hand, the guide function of the sliding lock piece 2 is achieved, the deviation of the sliding lock piece 2 relative to the self-set sliding direction in the locking or opening process is prevented, and on the other hand, the sliding lock piece 2 is prevented from being separated from the sliding surface 31 to cause the failure of the bracket in the use process.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims (10)

1. The utility model provides a push type self-ligating bracket, includes and holds in the palm groove main part (1) and sliding lock piece (2), has seted up bow wire groove (3) on holding in the palm groove main part (1), its characterized in that: the sliding locking plate (2) is provided with a closing and locking groove (4) and an opening and closing locking groove (5), the opening of the closing and locking groove faces away from the arch wire groove (3), and the distance between the closing and locking groove (4) and the arch wire groove (3) is larger than the distance between the opening and closing locking groove (5) and the arch wire groove (3);

the bracket body (1) is provided with a locking block (6) which can switch the position between an opening locking groove (5) and a closing locking groove (4), and the moving direction of the locking block (6) has a component along the sliding direction of the sliding locking plate (2);

the bracket body (1) is provided with a force applying piece which is used for applying acting force to the locking block (6) so that the locking block (6) can be maintained in the opening and closing locking groove (5) or the closing locking groove (4);

the sliding lock plate (2) is provided with a closed transition groove (8), an opening and closing transition groove (9), a first opening and closing channel (10) for communicating the opening and closing transition groove (9) with the closed locking groove (4), a second opening and closing channel (11) for communicating the opening and closing transition groove (9) with the opening and closing locking groove (5), a first closed channel (12) for communicating the opening and closing locking groove (5) with the closed transition groove (8), and a second closed channel (13) for communicating the closed transition groove (8) with the closed locking groove (4);

when the locking block (6) is initially positioned in the locking groove (4) and the sliding locking plate (2) slides towards the direction far away from the arch wire groove (3), the locking block (6) sequentially passes through the first opening-closing channel (10), the opening-closing transition groove (9) and the second opening-closing channel (11) to enter the opening-closing locking groove (5);

when the locking block (6) is initially positioned in the opening and closing locking groove (5) and the sliding locking plate (2) slides towards the direction close to the arch wire groove (3), the locking block (6) sequentially passes through the first closed channel (12), the closed transition groove (8) and the second closed channel (13) to enter the closed locking groove (4).

2. The push type self-ligating bracket of claim 1, wherein: the guide groove (14) is formed in the sliding locking plate (2), the guide block (15) located inside the guide groove (14) is formed in the sliding locking plate (2), the opening and closing locking groove (5) is located in the guide groove (14), the closing and locking groove (4) is formed in the guide block (15), the transition groove (8) is closed, the transition groove (9) is opened and closed, the first opening and closing channel (10), the second opening and closing channel (11), the first closing channel (12) and the second closing channel (13) are formed between the groove wall of the guide groove (14) and the circumferential surface of the guide block (15).

3. The push type self-ligating bracket of claim 1 or 2, wherein: a first guide surface (16) is arranged between the opening and closing transition groove (9) and the closed transition groove (8), the first guide surface (16) extends to the inside of the first opening and closing channel (10), and one end, far away from the opening and closing transition groove (9), of the first guide surface (16) is located on one side, close to the closed transition groove (8), of the closed locking groove (4).

4. The push type self-ligating bracket of claim 1 or 2, wherein: one side of the closing and locking groove (4) close to the opening and closing transition groove (9) is provided with a second guide surface (17), the second guide surface (17) extends towards the opening and closing transition groove (9), and one end, far away from the closing and locking groove (4), of the second guide surface (17) is located on one side, close to the closing transition groove (8), of the opening and closing transition groove (9).

5. The push type self-ligating bracket of claim 1 or 2, wherein: a third guide surface (18) is arranged on one side, close to the closing and locking groove (4), of the opening and closing locking groove (5), and the third guide surface (18) extends into the first closed channel (12); one end of the third guide surface (18) close to the opening-closing locking groove (5) is positioned on one side of the opening-closing locking groove (5) close to the second opening-closing channel (11).

6. The push type self-ligating bracket of claim 1 or 2, wherein: a fourth guide surface (19) is arranged on one side of the closing and locking groove (4) close to the closing transition groove (8), and one end of the fourth guide surface (19) close to the closing transition groove (8) is positioned on one side of the closing transition groove (8) far away from the opening and closing transition groove (9).

7. The push type self-ligating bracket of claim 2, wherein: one side of the bracket main body (1) far away from the sliding locking plate (2) is hinged with a transmission rod (20), the transmission rod (20) can swing in a plane parallel to the sliding direction of the sliding locking plate (2), the locking block (6) is molded or fixed on the transmission rod (20), and a first abdicating hole (22) for the transmission rod (20) to pass through is formed in the bracket main body (1).

8. The push type self-ligating bracket of claim 7, wherein: the bracket body (1) is provided with a guide hole (24), the sliding locking plate (2) is provided with a guide strip (23) embedded into the guide hole (24), and the guide strip (23) can move along the sliding direction of the sliding locking plate (2) in the guide hole (24).

9. The push type self-ligating bracket of claim 7 or 8, wherein: the bracket is characterized by further comprising a base plate (27) and a support platform (25) formed or fixed on the bracket main body (1), wherein the support platform (25) is positioned between the base plate (27) and the bracket main body (1), and the base plate (27) is fixed on the support platform (25); the support platform (25) is provided with a second abdicating hole (26) for providing space for the driving rod (20) to swing.

10. The push type self-ligating bracket of claim 1 or 2, wherein: the force application piece is a supporting elastic sheet (7) which can generate elastic deformation in the sliding direction of the sliding locking plate (2), clamping strips (28) which are connected with the bracket main body (1) in a sliding mode are formed at the two ends of the supporting elastic sheet (7), and the clamping strips (28) can slide on the bracket main body (1) along the deformation direction perpendicular to the supporting elastic sheet (7).

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