A press-type self-locking bracket

Abstract

This application relates to an orthodontic medical device, particularly to a push-type self-locking bracket. The key points of its technical solution are as follows: It includes a bracket body and a sliding lock piece. An arch wire groove is provided on the bracket body; the sliding lock piece has a closed lock groove with an opening facing away from the arch wire groove and an opening and closing lock groove; a lock block is arranged on the bracket body and can be switched between the opening and closing lock groove and the closed lock groove; a force applying member is arranged on the bracket body to apply a force to the lock block so that the lock block can be maintained inside the opening and closing lock groove or the closed lock groove; the sliding lock piece is provided with a closed transition groove, an opening and closing transition groove, a first opening and closing channel connecting the opening and closing transition groove and the closed lock groove, a second opening and closing channel connecting the opening and closing transition groove and the opening and closing lock groove, a first closed channel connecting the opening and closing lock groove and the closed transition groove, and a second closed channel connecting the closed transition groove and the closed lock groove; it achieves the purpose of facilitating the opening and closing of the arch wire groove to save the surgical operation time of orthodontists.

Description

Technical Field

[0001] The present application relates to an orthodontic medical device, and in particular to a press-type self-locking bracket. Background Art

[0002] The self-locking bracket is a main component in a fixed orthodontic appliance. During the clinical orthodontic treatment cycle, the locking mechanism of the bracket needs to be opened multiple times to readjust the arch wire, polish, bend, or directly replace it.

[0003] The self-locking brackets in related technologies include a bracket body, a base plate fixed on the bracket body, and an arch wire groove opened on the side of the bracket body facing away from the base plate. The arch wire groove is used for embedding the main arch wire therein to fix the bracket body and the main arch wire. To improve the installation stability between the main arch wire and the bracket body, a sliding lock piece for closing or opening the arch wire groove is provided on the bracket body. When it is necessary to open or close the arch wire groove, an orthodontist needs to use a supporting unlocking tool to open or close the lock, which is cumbersome and the chairside clinical process is time-consuming, thus increasing the operation time of the orthodontist and affecting the orthodontic effect. Summary of the Invention

[0004] In order to facilitate the opening and closing of the arch wire groove to save the surgical operation time of the orthodontist, the present application provides a press-type self-locking bracket.

[0005] The press-type self-locking bracket provided by the present application adopts the following technical solutions:

[0006] A press-type self-locking bracket includes a bracket body and a sliding lock piece. An arch wire groove is opened on the bracket body. The sliding lock piece has a closed lock groove and an opening and closing lock groove with the opening facing away from the arch wire groove. The distance between the closed lock groove and the arch wire groove is greater than the distance between the opening and closing lock groove and the arch wire groove. A lock block capable of switching positions between the opening and closing lock groove and the closed lock groove is provided on the bracket body. The moving direction of the lock block has a component along the sliding direction of the sliding lock piece. A force applying member for applying a force to the lock block to enable the lock block to be maintained inside the opening and closing lock groove or the closed lock groove is provided on the bracket body. The sliding lock piece is provided with a closed transition groove, an opening and closing transition groove, a first opening and closing channel connecting the opening and closing transition groove and the closed lock groove, a second opening and closing channel connecting the opening and closing transition groove and the opening and closing lock groove, a first closing channel connecting the opening and closing lock groove and the closed transition groove, and a second closing channel connecting the closed transition groove and the closed lock groove. When the lock block is initially located inside the closed lock groove and the sliding lock piece slides away from the arch wire groove, the lock block sequentially passes through the first opening and closing channel, the opening and closing transition groove, and the second opening and closing channel and enters the opening and closing lock groove. When the lock block is initially located inside the opening and closing lock groove and the sliding lock piece slides towards the arch wire groove, the lock block sequentially passes through the first closing channel, the closed transition groove, and the second closing channel and enters the closed lock groove.

[0007] By adopting the above technical solution, when the initial position of the locking block is inside the closed locking groove and it is necessary to open the arch wire groove with the sliding lock piece, press the sliding lock piece in the direction towards the force applying member so that the sliding lock piece moves towards the arch wire groove. During this process, the sliding lock piece overcomes the acting force of the force applying member. Taking the sliding lock piece as a reference, each groove wall on the sliding lock piece applies an acting force on the locking block, and the locking block generates a horizontal movement component. The locking block successively 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 and enters the inside of the opening and closing locking groove. Under the action of the force applying member, the locking block stably stays inside the opening and closing locking groove. At this time, the sliding lock piece disengages from the arch wire groove; when the initial position of the locking block is inside the opening and closing locking groove and it is necessary to close the arch wire groove with the sliding lock piece, press the sliding lock piece in the direction towards the force applying member until the sliding lock piece disengages from the opening and closing locking groove and enters the inside of the first closing channel. During this process, the force applying member continuously applies a thrust force in the direction away from the force applying member to the sliding lock piece. Taking the sliding lock piece as a reference, each groove wall on the sliding lock piece applies an acting force on the locking block, and the locking block generates a horizontal movement component. The locking block successively passes through the opening and closing locking groove, the first closing channel, the closing transition groove, and the second closing channel and enters the inside of the closed locking groove. Under the action of the force applying member, the locking block stably stays inside the closed locking groove. At this time, the sliding lock piece continuously closes the arch wire groove; the entire process does not require additional use of unlocking tools, and only by pressing the sliding lock piece can the opening and closing of the arch wire groove be achieved, which facilitates the opening and closing of the arch wire groove and saves the surgical operation time of orthodontists.

[0008] Optionally, a guiding groove is formed on the sliding lock piece, and a guiding block located inside the guiding groove is formed on the sliding lock piece. The opening and closing locking groove is located on the guiding groove, and the closed locking groove is formed on the guiding block. The closing transition groove, the opening and closing transition groove, the first opening and closing channel, the second opening and closing channel, the first closing channel, and the second closing channel are formed between the groove wall of the guiding groove and the peripheral surface of the guiding block.

[0009] By adopting the above technical solution, the area sandwiched between the groove wall of the guiding groove and the peripheral surface of the guiding block is the respective channels for the locking block to switch positions between the opening and closing locking groove and the closed locking groove.

[0010] Optionally, a first guiding surface is provided between the opening and closing transition groove and the closing transition groove. The first guiding surface extends into the first opening and closing channel, and the end of the first guiding surface far from the opening and closing transition groove is located on the side of the closed locking groove close to the closing transition groove.

[0011] By adopting the above technical solution, when a pressure towards the arch wire groove is applied to the sliding lock piece, the first guiding surface fits on the side of the locking block close to the closing transition groove, and the first guiding surface pushes the locking block to slide along the first guiding surface until the locking block enters the inside of the first opening and closing channel, thereby preventing the locking block from wrongly entering the inside of the closing transition groove.

[0012] Optionally, a second guiding surface is provided on one side of the closed locking groove close to the opening and closing transition groove. The second guiding surface extends towards the opening and closing transition groove, and one end of the second guiding surface away from the closed locking groove is located on the side of the opening and closing transition groove close to the closed transition groove.

[0013] By adopting the above technical solution, during the movement of the locking block from the closed locking groove to the opening and closing transition groove, it needs to pass through the first opening and closing channel, and then move from the opening and closing transition groove to the inside of the opening and closing locking groove through the second opening and closing channel. When the locking block is inside the opening and closing transition groove, one end of the second guiding surface away from the closed locking groove abuts against one side of the locking block close to the closed locking groove. If a force is applied to the sliding lock piece along the sliding direction of the sliding lock piece at this time, the end of the second guiding surface will hinder the locking block from returning to the inside of the first opening and closing channel due to abutting against the locking block, and the locking block will slide along the end of the second guiding surface into the inside of the second opening and closing channel, thereby effectively preventing the locking block from returning to the inside of the closed locking groove instantly when it attempts to move from the opening and closing transition groove to the inside of the opening and closing locking groove.

[0014] Optionally, a third guiding surface is provided on one side of the opening and closing locking groove close to the closed locking groove. The third guiding surface extends within the first closed channel; one end of the third guiding surface close to the opening and closing locking groove is located on the side of the opening and closing locking groove close to the second opening and closing channel.

[0015] By adopting the above technical solution, when the initial position of the locking block is inside the opening and closing locking groove, the sliding lock piece is pressed to make the sliding lock piece move towards the direction close to the arch wire groove against the acting force of the force applying member. During this process, the third guiding surface fits on the locking block and pours the locking block into the inside of the first closed channel, thereby preventing the locking block from mistakenly entering the inside of the second opening and closing channel from the inside of the opening and closing locking groove.

[0016] Optionally, a fourth guiding surface is provided on one side of the closed locking groove close to the closed transition groove. One end of the fourth guiding surface close to the closed transition groove is located on the side of the closed transition groove away from the opening and closing transition groove.

[0017] By adopting the above technical solution, when the locking block enters the inside of the closed transition groove, one side of the fourth guiding surface close to the closed transition groove abuts against the locking block, and under the continuous acting force of the force applying member, the fourth guiding surface guides the locking block into the inside of the second opening and closing channel, thereby preventing the locking block from returning to the inside of the first closed channel from the inside of the closed transition groove.

[0018] Optionally, a transmission rod is hinged on one side of the bracket body away from the sliding lock piece. The transmission rod can swing within a plane parallel to the plane where the sliding direction of the sliding lock piece is located. The locking block is formed or fixed on the transmission rod, and a first relief hole for the transmission rod to pass through is provided on the bracket body.

[0019] By adopting the above technical solution, the guiding groove and the guiding block apply force to the locking block to make the locking block move. During this process, the locking block applies force to the transmission rod, and the transmission rod swings around its hinge point with the bracket body.

[0020] Optionally, a guiding hole is formed in the bracket body, and a guiding strip is formed in the sliding lock piece and inserted into the guiding hole. The guiding strip can move inside the guiding hole along the sliding direction of the sliding lock piece.

[0021] By adopting the above technical solution, on the one hand, it plays a guiding role in the sliding of the sliding lock piece, preventing the sliding lock piece from deflecting relative to its preset sliding direction; on the other hand, it prevents the sliding lock piece from detaching from the bracket body and causing the bracket to fail.

[0022] Optionally, it further includes a base plate and a support platform formed or fixed on the bracket body. The support platform is located between the base plate and the bracket body, and the base plate is fixed on the support platform; a second relief hole for providing space for the swinging of the transmission rod is formed in the support platform.

[0023] By adopting the above technical solution, when assembling the bracket, first install the sliding lock piece on the bracket body, and at the same time, the guiding strip slides into the inside of the guiding groove; then install the transmission rod on the bracket body, and the locking block extends into the gap between the guiding groove and the guiding block; finally, weld the base plate on the support platform. The support platform, on the one hand, connects the base plate and the bracket body, and on the other hand, provides space for the swinging of the transmission rod, preventing the setting of the base plate from hindering the movement of the transmission rod.

[0024] Optionally, the force applying member is a support elastic piece that can generate elastic deformation in the sliding direction of the sliding lock piece. Clamping strips that are slidably connected to the bracket body are formed at both ends of the support elastic piece, and the clamping strips can slide on the bracket body along a direction perpendicular to the deformation direction of the support elastic piece.

[0025] By adopting the above technical solution, during the process of pressing the support elastic piece at the end of the sliding lock piece, the support elastic piece applies a continuous reverse elastic force to the sliding lock piece, so that the inner wall of the guiding groove or the peripheral surface of the guiding block can generate extrusion with the locking block. During this process, the clamping strips slide on the bracket body to adapt to the dimensional change when the support elastic piece generates elastic deformation.

[0026] In summary, the present application has the following technical effects:

[0027] 1. By providing the locking block, the force applying member, the guiding groove and the guiding block, the opening and closing process of the arch wire groove does not require additional unlocking tools, and only by pressing the sliding lock piece, the opening and closing of the arch wire groove can be realized, which is convenient for the opening and closing of the arch wire groove and saves the surgical operation time of orthodontists;

[0028] 2. By providing the first guiding surface, the second guiding surface, the third guiding surface and the fourth guiding surface, the movement of the locking block between the inner wall of the guiding groove and the peripheral surface of the guiding block is a unidirectionally determined movement, so as to ensure that the opening and closing of the arch wire groove can be reliably realized when pressing the sliding lock piece. Description of the Drawings

[0029] Figure 1 is a schematic diagram of the overall structure of the push - type self - locking bracket in the embodiment of the present application;

[0030] Figure 2 is an exploded structure schematic diagram of the push - type self - locking bracket in the embodiment of the present application;

[0031] Figure 3 is a schematic diagram of the bracket body and the support platform on the side close to the base plate in the embodiment of the present application, and the base plate is not shown in the figure;

[0032] Figure 4 is a schematic diagram of the sliding lock piece on the side close to the sliding surface in the embodiment of the present application;

[0033] Figure 5 is a schematic diagram of the lock block when it is between the groove wall of the guiding groove and the peripheral surface of the guiding block in the embodiment of the present application, and the figure corresponds to the state when the lock block is inside the closed lock groove;

[0034] Figure 6 is a schematic diagram of the lock block when it is between the groove wall of the guiding groove and the peripheral surface of the guiding block in the embodiment of the present application, and the figure corresponds to the state when the lock block is inside the opening - closing transition groove;

[0035] Figure 7 is a schematic diagram of the lock block when it is between the groove wall of the guiding groove and the peripheral surface of the guiding block in the embodiment of the present application, and the figure corresponds to the state when the lock block is inside the opening - closing lock groove;

[0036] Figure 8 is a schematic diagram of the lock block when it is between the groove wall of the guiding groove and the peripheral surface of the guiding block in the embodiment of the present application, and the figure corresponds to the state when the lock block is inside the closed transition groove.

[0037] In the figure, 1. Bracket body; 2. Sliding lock piece; 3. Arch wire groove; 4. Closed lock groove; 5. Opening - closing lock groove; 6. Lock block; 7. Support spring piece; 8. Closed transition groove; 9. Opening - closing transition groove; 10. First opening - closing channel; 11. Second opening - closing channel; 12. First closed channel; 13. Second closed channel; 14. Guiding groove; 15. Guiding block; 16. First guiding surface; 17. Second guiding surface; 18. Third guiding surface; 19. Fourth guiding surface; 20. Transmission rod; 21. Hinge shaft; 22. First relief hole; 23. Guiding strip; 24. Guiding hole; 25. Support platform; 26. Second relief hole; 27. Base plate; 28. Clamping strip; 29. Clamping groove; 30. Relief groove; 31. Sliding surface. Detailed Description of the Invention

[0038] In the description of the present application, it should be noted that terms such as "close to", "far from", "away from", "towards", etc. are all relative relationships based on the figures shown, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the processes or modules referred to must have specific orientations, states, and operations. Therefore, it should not be construed as a limitation to the present invention.

[0039] The following further details the present application with reference to the accompanying drawings.

[0040] Referring to Figure 1 and Figure 2 , the present application provides a press - type self - locking bracket, including a bracket body 1, an arch wire groove 3 opened on the bracket body 1, a sliding surface 31 located on the bracket body 1 and disposed on one side of the arch wire groove 3, a sliding lock piece 2 capable of sliding on the sliding surface 31 in a direction close to or far from the arch wire groove 3, and a base plate 27 fixedly connected to the side of the bracket body 1 away from the arch wire groove 3. When the sliding lock piece 2 slides on the sliding surface 31 in a direction far from the arch wire groove 3, the opening degree of the arch wire groove 3 becomes larger until one side of the arch wire groove 3 is opened for the main arch wire to be inserted into the interior of the arch wire groove 3; when the sliding lock piece 2 slides on the sliding surface 31 in a direction close to the arch wire groove 3, the opening degree of the arch wire groove 3 gradually decreases until the sliding lock piece 2 covers and closes the arch wire groove 3, and the main arch wire is thus locked on the bracket body 1.

[0041] Referring to Figure 2 and Figure 3 , a locking block 6 extending towards the side of the sliding lock piece 2 on the sliding surface 31 is provided on the bracket body 1. The locking block 6 can move on the bracket body 1 and the movement of the locking block 6 has a movement component in a direction perpendicular to the sliding direction of the sliding lock piece 2. Specifically, the locking block 6 and the bracket body 1 can be set to be slidably connected, and the sliding direction of the locking block 6 is to translate along a direction perpendicular to the sliding direction of the sliding lock piece 2 on the sliding surface 31; in this embodiment, the locking block 6 can swing on a plane parallel to the sliding surface 31. Specifically, a transmission rod 20 is provided at the end of the locking block 6 on the side of the bracket body 1 close to the base plate 27. The locking block 6 is a cylindrical rod - shaped structure with an axis perpendicular to the sliding surface 31. The axis of the transmission rod 20 is arranged parallel to the sliding surface 31. One end of the transmission rod 20 away from the locking block 6 is provided with a hinge shaft 21 hinged to the side of the bracket body 1 close to the base plate 27. The hinge shaft 21 can rotate about its own axis. The locking block 6, the transmission rod 20, and the hinge shaft 21 are integrally formed into a U - shaped structure. When the locking block 6 is stressed on the sliding surface 31, the transmission rod 20 transmits the torque to the hinge shaft 21, and the locking block 6 swings on the sliding surface 31, and this swing has a movement component in a direction perpendicular to the sliding direction of the sliding lock piece 2 on the sliding surface 31.

[0042] Referring to Figure 1 and Figure 3, To prevent the setting of the base plate 27 from interfering with the swing of the transmission rod 20, a support platform 25 formed on the bracket body 1 is provided between the base plate 27 and the bracket body 1. A second relief hole 26 for providing space for the swing of the transmission rod 20 is formed on the support platform 25. The second relief hole 26 can be a fan-shaped structure centered on the hinge shaft 21 or a shape that completely covers the swing sweep area of the transmission rod 20. In addition, a first relief hole 22 through which the locking block 6 passes through the bracket body 1 when approaching and departing from the base plate 27 is formed on the bracket body 1. The first relief hole 22 completely covers the swing sweep area of the locking block 6 around the hinge shaft 21. When assembling the base plate 27 and the bracket body 1, first insert the hinge shaft 21 into the hinge point on the bracket body 1, place the transmission rod 20 in the second relief hole 26 and make the locking block 6 pass through the first relief hole 22. Then, attach the base plate 27 to the support platform 25 and weld the two, and the base plate 27 closes the second relief hole 26.

[0043] Refer to Figure 4 , On one side of the sliding lock piece 2 close to the sliding surface 31, a guiding groove 14 is formed and a guiding block 15 located inside the guiding groove 14 is formed. A channel continuously extending circumferentially along the guiding block 15 is formed between the circumferential surface of the guiding block 15 and the groove wall of the guiding groove 14. The locking block 6 is inserted into the inside of this channel and can move between the guiding block 15 and the guiding groove 14 (taking the sliding lock piece 2 as a reference). Specifically, this channel is divided into a closed locking groove 4, an opening and closing transition groove 9, an opening and closing locking groove 5, and a closed transition groove 8. The connection line between the closed locking groove 4 and the opening and closing locking groove 5 is parallel to the sliding direction of the sliding lock piece 2. The orientations of both the closed locking groove 4 and the opening and closing locking groove 5 deviate from the arch wire groove 3. The closed locking groove 4 is located on the side of the opening and closing locking groove 5 away from the arch wire groove 3. The opening and closing transition groove 9 and the closed transition groove 8 are respectively located on both sides of the closed locking groove 4, and the distances from both the opening and closing transition groove 9 to the arch wire groove 3 and the closed transition groove 8 to the arch wire groove 3 are greater than the distance from the closed locking groove 4 to the arch wire groove 3.

[0044] Refer to Figure 4 , There is a first opening and closing channel 10 for connecting the closed locking groove 4 and the opening and closing transition groove 9. The first opening and closing channel 10 gradually moves away from the arch wire groove 3 along the direction from the closed locking groove 4 to the opening and closing transition groove 9. There is a second opening and closing channel 11 for connecting the opening and closing transition groove 9 and the opening and closing locking groove 5. The second opening and closing channel 11 gradually approaches the arch wire groove 3 along the direction from the opening and closing transition groove 9 to the opening and closing locking groove 5. There is a first closed channel 12 for connecting the opening and closing locking groove 5 and the closed transition groove 8. The first closed channel 12 gradually moves away from the arch wire groove 3 along the direction from the opening and closing locking groove 5 to the closed transition groove 8. There is a second closed channel 13 for connecting the closed transition groove 8 and the closed locking groove 4. The second closed channel 13 gradually approaches the arch wire groove 3 along the direction from the closed transition groove 8 to the closed locking groove 4.

[0045] Referring to Figure 2 and Figure 4 , a relief groove 30 is formed on the bracket body 1 and faces the sliding surface 31, and the bottom of the relief groove 30 is flush with the sliding surface 31; a force applying member is arranged inside the relief groove 30. When the sliding lock piece 2 presses the force applying member, the force applying member can act on the sliding lock piece 2 with a thrust force in a direction away from the force applying member; when the sliding lock piece 2 just fits on the force applying member, the locking block 6 should be inserted into the closed locking groove 4, and the sliding lock piece 2 completely covers the arch wire groove 3 to close the arch wire groove 3; when the locking block 6 is inserted into the opening and closing locking groove 5, the end of the sliding lock piece 2 disengages from the force applying member and the arch wire groove 3, and the arch wire groove 3 is opened.

[0046] Referring to Figure 5 , Figure 6 and Figure 7 , with the locking block 6 located inside the closed locking groove 4 as the initial position, at this time the sliding lock piece 2 closes the arch wire groove 3. When it is necessary to make the sliding lock piece 2 disengage from the arch wire groove 3, press the sliding lock piece 2 in the direction close to the force applying member. During this process, the locking block 6 slides into the opening and closing transition groove 9 through the first opening and closing channel 10 and the force applying member accumulates elastic potential energy; when the locking block 6 enters the opening and closing transition groove 9, stop applying the pressing force to the sliding lock piece 2, the force applying member releases the elastic potential energy and pushes the sliding lock piece 2 to move in a direction away from the force applying member. During this process, the locking block 6 will slide into the opening and closing locking groove 5 through the second opening and closing channel 11. Under the limiting action of the groove wall of the opening and closing locking groove 5, the supporting action of the transmission rod 20, and the limitation of the sliding direction of the sliding lock piece 2 and other multiple factors, the locking block 6 is normally and stably embedded in the opening and closing locking groove 5, so that the state of disengaging from the arch wire groove 3 is maintained when the sliding lock piece 2 is not continuously pressed.

[0047] Referring to Figure 5 , Figure 7 and Figure 8, and then the locking block 6 is located in the opening and closing lock groove 5 as the initial position, at this time, the sliding lock piece 2 is separated from the archwire slot 3, when the sliding lock piece 2 needs to close the archwire slot 3, the sliding lock piece 2 is pressed in the direction close to the force-applying member, during this process, the sliding lock piece 2 continuously moves in the direction close to the force-applying member until the sliding lock piece 2 squeezes the force-applying member, when the locking block 6 enters the closed transition groove 8 through the first closed channel 12, the sliding lock piece 2 has passed over the archwire slot 3 and overlapped the bottom of the yielding groove 30, and the force-applying member has accumulated a certain amount of elastic potential energy; at this time, the pressing force applied to the sliding lock piece 2 is stopped, and the force-applying member is released. The elastic potential energy pushes the sliding locking piece 2 to move in the direction away from the force-applying member. During this process, the locking block 6 will slide into the closed lock groove 4 through the second closed channel 13. At this time, the sliding locking piece 2 just covers the arch wire slot 3 and the sliding locking piece 2 just fits with the force-applying member. Under multiple factors such as the limiting effect of the slot wall of the closed lock slot 4, the supporting effect of the transmission rod 20, the limiting effect of the force-applying member and the sliding direction limitation of the sliding locking piece 2 of the force-applying member, the locking block 6 is normally and stably embedded in the closed lock slot 4, so that the sliding locking piece 2 can maintain the state of covering the arch wire slot 3 when the sliding locking piece 2 is not further under pressure.

[0048] The opening and closing process of the sliding locking piece 2 does not require the aid of an additional unlocking tool, and the archwire slot 3 can be opened and closed simply by pressing the sliding locking piece 2, which facilitates the opening and closing of the archwire slot 3 and saves the orthodontist's surgical operation time.

[0049] Reference Figure 4 and Figure 5 In order to prevent the locking block 6 from mistakenly entering the second closed passage 13 at the moment when the locking block 6 wants to move toward the opening and closing transition groove 9 through the first opening and closing passage 10, a first guide surface 16 located between the opening and closing transition groove 9 and the closed transition groove 8 is formed on the groove wall of the guide groove 14 away from the archwire groove 3. The first guide surface 16 is also the side wall of the first opening and closing passage 10. The extension direction of the first guide surface 16 is the same as that of the first opening and closing passage 10, and one end of the first guide surface 16 away from the closing transition groove 9 is located on the side of the closed lock groove 4 close to the closed transition groove 8; in this way, when the sliding locking plate 2 is pressed, the first guide surface 16, i.e., the inner wall of the first opening and closing passage 10, will be in contact with the locking block 6, and it will not be able to enter the second closed passage 13. As the sliding locking plate 2 is continuously pressed, the locking block 6 will continue to maintain a fit state with the first guide surface 16 until it enters the opening and closing transition groove 9.

[0050] Reference Figure 4 and Figure 6, after the locking block 6 enters the opening / closing transition groove 9, the force-applying member has stored a certain amount of elastic potential energy and stops pressing on the sliding lock piece 2. The force-applying member releases the elastic potential energy to the sliding lock piece 2. To prevent the locking block 6 from erroneously returning to the first opening / closing channel 10 instead of entering the second opening / closing channel 11 at this moment, a second guiding surface 17 is formed on the side of the guiding block 15 away from the arch wire groove 3. The second guiding surface 17 is simultaneously formed on the inner wall of the first opening / closing channel 10 and has the same extending direction as the first opening / closing channel 10; the end of the second guiding surface 17 away from the closed locking groove 4 is located on the side of the opening / closing transition groove 9 close to the closed transition groove 8, that is, when the locking block 6 enters the opening / closing transition groove 9, the end point of the second guiding surface 17 abuts against the side of the locking block 6 close to the closed transition groove 8; when the force-applying member releases the elastic potential energy, extrusion will occur between the end of the second guiding surface 17 and the locking block 6, and the end of the second guiding surface 17 will hinder the locking block 6 from returning to the inside of the first opening / closing channel 10 because it abuts against the locking block 6. The locking block 6 will slide along the inner wall of the second opening / closing channel 11 at the end of the second guiding surface 17 into the second opening / closing channel 11, effectively preventing the locking block 6 from returning to the inside of the closed locking groove 4 when it attempts to move from the opening / closing transition groove 9 to the inside of the opening / closing locking groove 5 at a moment.

[0051] Refer to Figure 4 and Figure 7 , to prevent the locking block 6 from erroneously entering the second opening / closing channel 11 when it attempts to move in the direction of the closed transition groove 8 through the first closed channel 12, a third guiding surface 18 is formed on the side of the guiding block 15 close to the arch wire groove 3. The third guiding surface 18 is simultaneously the inner wall of the first closed channel 12 and has the same extending direction as the first closed channel 12. The end of the third guiding surface 18 close to the opening / closing locking groove 5 is located on the side of the opening / closing locking groove 5 close to the second opening / closing channel 11; thus, when pressing the sliding lock piece 2 in the direction close to the force-applying member, the third guiding surface 18 first abuts against the locking block 6 and as the third guiding surface 18 continuously moves, the third guiding surface 18 squeezes and pushes the locking block 6 and makes the locking block 6 slide along its own extending direction into the first closed channel 12 and unable to enter the second opening / closing channel 11 through the third guiding surface 18.

[0052] Refer to Figure 4 and Figure 8When the locking block 6 enters the closed transition groove 8, the force-applying member has stored a certain amount of elastic potential energy, stops applying pressure to the sliding locking plate 2, and releases the elastic potential energy to the sliding locking plate 2. In order to prevent the locking block 6 from mistakenly returning to the first closed channel 12 without entering the second closed channel 13 at this moment, a fourth guide surface 19 is formed on the side of the guide block 15 away from the archwire slot 3. The fourth guide surface 19 is also formed on the inner wall of the second closed channel 13 and extends in the same direction as the second closed channel 13. An end of the fourth guide surface 19 close to the closed transition groove 8 is located on the side of the closed transition groove 8 away from the closing transition groove 9; when the force-applying member releases the elastic potential energy, the fourth guide surface 19 is attached to the locking block 6. As the force-applying member continues to apply force, the locking block 6 will slide into the second closed channel 13 along the extension direction of the fourth guide surface 19, and cannot return to the first closed channel 12 through the fourth guide surface 19.

[0053] Reference Figure 1 and Figure 2 Specifically, the force-applying member may be a spring whose axis is parallel to the sliding direction of the sliding locking piece 2, or the supporting spring piece 7 in the present embodiment. The supporting spring piece 7 is arranged on the groove wall of the yielding groove 30 facing the sliding surface 31 and the supporting spring piece 7 protrudes in the direction close to the sliding surface 31 under normal conditions. When the supporting spring piece 7 is squeezed by the end of the sliding locking piece 2, the protruding part of the supporting spring piece 7 is squeezed and deformed and can accumulate elastic potential energy. In addition, a snap-in strip 28 is formed at both ends of the supporting spring piece 7, and a snap-in slot 29 for inserting the snap-in strip 28 is provided on the two opposite groove walls of the yielding groove 30. The snap-in strip 28 can move inside the snap-in slot 29 along a direction perpendicular to the sliding direction of the sliding locking piece 2 to adapt to the dimensional change in the length direction of the supporting spring piece 7 when the supporting spring piece 7 produces elastic deformation.

[0054] Reference Figure 2 In addition, the bracket body 1 is provided with guide holes 24 located on both sides of the sliding surface 31, and the sides of the guide holes 24 close to each other are open. The two sides of the sliding locking piece 2 are formed with guide strips 23 respectively inserted into the guide holes 24, and the extension direction of the guide strips 23 is the sliding direction of the sliding locking piece 2; on the one hand, it plays a guiding role for the sliding locking piece 2 to prevent the sliding locking piece 2 from deviating from its own predetermined sliding direction during the locking or opening process, and on the other hand, it prevents the sliding locking piece 2 from separating from the sliding surface 31 and causing the bracket to fail during use.

[0055] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed. However, as long as it is within the scope of the claims of the present application, it shall be protected by the patent law.

Claims

1. A press - type self - locking bracket, comprising a bracket body (1) and a sliding lock piece (2). A wire groove (3) is formed on the bracket body (1), and it is characterized in that: The sliding lock piece (2) is provided with a closed lock groove (4) and an opening / closing lock groove (5) whose openings face away from the arch wire groove (3). The distance between the closed lock groove (4) and the arch wire groove (3) is greater than the distance between the opening / closing lock groove (5) and the arch wire groove (3). A lock block (6) capable of switching positions between the opening / closing lock groove (5) and the closed lock groove (4) is arranged on the bracket body (1). The moving direction of the lock block (6) has a component in the sliding direction of the sliding lock piece (2). A force applying member for applying a force to the lock block (6) so that the lock block (6) can be maintained inside the opening / closing lock groove (5) or the closed lock groove (4) is arranged on the bracket body (1). The sliding lock piece (2) is provided with a closed transition groove (8), an opening / closing transition groove (9), a first opening / closing channel (10) connecting the opening / closing transition groove (9) and the closed lock groove (4), a second opening / closing channel (11) connecting the opening / closing transition groove (9) and the opening / closing lock groove (5), a first closing channel (12) connecting the opening / closing lock groove (5) and the closed transition groove (8), and a second closing channel (13) connecting the closed transition groove (8) and the closed lock groove (4). When the lock block (6) is initially located inside the closed lock groove (4) and the sliding lock piece (2) slides away from the arch wire groove (3), the lock block (6) sequentially passes through the first opening / closing channel (10), the opening / closing transition groove (9), and the second opening / closing channel (11) and enters the opening / closing lock groove (5). When the lock block (6) is initially located inside the opening / closing lock groove (5) and the sliding lock piece (2) slides towards the arch wire groove (3), the lock block (6) sequentially passes through the first closing channel (12), the closed transition groove (8), and the second closing channel (13) and enters the closed lock groove (4).

2. The press-type self-locking bracket according to claim 1, wherein: A guiding groove (14) is formed on the sliding lock piece (2), and a guiding block (15) located inside the guiding groove (14) is formed on the sliding lock piece (2). The opening / closing lock groove (5) is located on the guiding groove (14), the closed lock groove (4) is formed on the guiding block (15), and the closed transition groove (8), the opening / closing transition groove (9), the first opening / closing channel (10), the second opening / closing channel (11), the first closing channel (12), and the second closing channel (13) are formed between the groove wall of the guiding groove (14) and the peripheral surface of the guiding block (15).

3. The press-type self-locking bracket according to claim 1 or 2, characterized in that: A first guiding surface (16) is arranged between the opening / closing transition groove (9) and the closed transition groove (8). The first guiding surface (16) extends into the first opening / closing channel (10). One end of the first guiding surface (16) far away from the opening / closing transition groove (9) is located on the side of the closed lock groove (4) close to the closed transition groove (8).

4. A push-button self-locking bracket according to claim 1 or 2, characterized in that: A second guiding surface (17) is arranged on the side of the closed lock groove (4) close to the opening / closing transition groove (9). The second guiding surface (17) extends towards the opening / closing transition groove (9). One end of the second guiding surface (17) far away from the closed lock groove (4) is located on the side of the opening / closing transition groove (9) close to the closed transition groove (8).

5. A press-type self-locking bracket according to claim 1 or 2, characterized in that: On one side of the opening and closing lock groove (5) close to the closed lock groove (4), a third guiding surface (18) is provided, and the third guiding surface (18) extends into the first closed channel (12); one end of the third guiding surface (18) close to the opening and closing lock groove (5) is located on the side of the opening and closing lock groove (5) close to the second opening and closing channel (11).

6. The press-type self-locking bracket according to claim 1 or 2, characterized in that: On one side of the closed lock groove (4) close to the closed transition groove (8), a fourth guiding surface (19) is provided, and one end of the fourth guiding surface (19) close to the closed transition groove (8) is located on the side of the closed transition groove (8) far from the opening and closing transition groove (9).

7. The press - type self - locking bracket according to claim 2, wherein: A transmission rod (20) is hinged to the side of the bracket body (1) far from the sliding lock piece (2). The transmission rod (20) can swing in a plane parallel to the plane where the sliding direction of the sliding lock piece (2) is located. The lock block (6) is formed or fixed on the transmission rod (20), and a first relief hole (22) for the transmission rod (20) to pass through is formed in the bracket body (1).

8. The press-type self-locking bracket according to claim 7, characterized in that: A guiding hole (24) is formed in the bracket body (1), and a guiding strip (23) inserted into the guiding hole (24) is formed on the sliding lock piece (2). The guiding strip (23) can move along the sliding direction of the sliding lock piece (2) inside the guiding hole (24).

9. The press-type self-locking bracket according to claim 7 or 8, characterized in that: It further includes a base plate (27) and a support platform (25) formed or fixed on the bracket body (1). The support platform (25) is located between the base plate (27) and the bracket body (1), and the base plate (27) is fixed on the support platform (25); a second relief hole (26) for providing space for the swing of the transmission rod (20) is formed in the support platform (25).

10. A push-type self-locking bracket according to claim 1 or 2, characterized in that: The force applying member is a support elastic sheet (7) capable of generating elastic deformation in the sliding direction of the sliding lock piece (2). Clamping strips (28) slidably connected to the bracket body (1) are formed at both ends of the support elastic sheet (7), and the clamping strips (28) can slide on the bracket body (1) along a direction perpendicular to the deformation direction of the support elastic sheet (7).

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