Self-ligating bracket

Abstract

The utility model relates to a self-ligating bracket which comprises a bracket main body, a cover body, an elastic column and a rolling piece, the cover body is arranged on a second working wing in a sliding mode, and in the process that the cover body opens or closes an arch wire groove, an extrusion part formed by the side wall of a groove extrudes the free end of the elastic column through the rolling piece to enable the free end of the elastic column to generate flexural deformation. Therefore, the cover body is opened and closed. Therefore, the structure for controlling opening and closing utilizes rolling friction generated between the rolling piece and the side wall of the groove, compared with sliding friction between the side wall of the groove of a traditional cover body and an elastic column directly, the rolling friction can reduce abrasion, the service life of the cover body and the elastic column is prolonged, and the service life of the whole self-ligating bracket is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of orthodontic technology, and in particular to a self-ligating bracket. Background Technology

[0002] Brackets are the most commonly used appliances in orthodontic treatment, typically including ligated brackets and self-ligating brackets. Self-ligating brackets are widely used due to their ease of use. A self-ligating bracket generally consists of a main body, a cover, and a locking mechanism. The cover opens and closes relative to the main body via the locking mechanism. In traditional self-ligating brackets, the locking mechanism is mostly a spring-loaded post. During the opening and closing of the cover, the spring-loaded post directly contacts the sidewall of the locking groove on the cover, generating sliding friction, which easily leads to wear and reduces the lifespan of the self-ligating bracket. Utility Model Content

[0003] Therefore, it is necessary to provide a self-locking bracket that can reduce wear and thus increase service life in response to the above-mentioned technical problems.

[0004] A self-locking bracket includes a bracket body, a cover, an elastic column, and a rolling element. The bracket body is provided with a bow wire groove, and the bow wire groove has a first working wing and a second working wing on opposite sides. The cover is slidably disposed on the second working wing to open or close the bow wire groove.

[0005] The bottom surface of the cover is provided with a groove, one end of the elastic column is provided on the second working wing, and the other end of the elastic column is a free end; or one end of the elastic column is provided on the cover, the other end of the elastic column is a free end, and the second working wing is provided with a groove.

[0006] The groove has a first end corresponding to the open position of the cover and a second end corresponding to the closed position of the cover along the sliding direction of the cover. The rolling element is at least partially located in the groove. There is at least one extrusion part formed by the sidewall of the groove between the first end and the second end of the groove. The extrusion part causes the free end of the elastic column to flex and deform by extruding the free end of the elastic column through the rolling element.

[0007] The aforementioned self-locking bracket has at least the following advantages:

[0008] The self-locking bracket includes a bracket body, a cover, an elastic post, and rolling elements. The cover is slidably mounted on the second working wing. During the opening or closing of the archwire groove, the pressing part formed by the sidewall of the groove compresses the free end of the elastic post through the rolling elements, causing the free end of the elastic post to flex and deform, thereby realizing the opening and closing of the cover. Therefore, the structure controlling the opening and closing utilizes the rolling friction generated between the rolling elements and the sidewall of the groove. Compared with the traditional sliding friction between the sidewall of the groove and the elastic post of the cover, rolling friction can reduce wear, thereby increasing the service life of the cover and the elastic post, and thus increasing the overall service life of the self-locking bracket.

[0009] In one embodiment, the groove further has an intermediate section located between the first end and the second end, and the intermediate section is connected to the first end and the second end. At least one side wall of the intermediate section protrudes to form a pressing portion, and the rolling element moves and rolls relative to the pressing portion.

[0010] In one embodiment, the cross-sectional dimension of the first end is larger than the cross-sectional dimension of the middle section, and the cross-sectional dimension of the second end is larger than the cross-sectional dimension of the middle section.

[0011] In one embodiment, the groove is generally an arc-shaped groove.

[0012] In one embodiment, the groove further has a straight segment portion located between the first end and the second end, and the straight segment portion is connected to the first end and the second end. The cross-sectional dimension of the first end is larger than the cross-sectional dimension of the straight segment portion, and the cross-sectional dimension of the second end is larger than the cross-sectional dimension of the straight segment portion. The sidewall of the straight segment portion forms the extrusion portion.

[0013] In one embodiment, the groove further includes an intermediate section, both the intermediate section and the first end being straight segments, and the second end being an enlarged portion. The cross-sectional dimension of the second end is larger than that of the intermediate section to form at least one protrusion at the transition between the second end and the intermediate section, the protrusion forming the extrusion portion.

[0014] In one embodiment, the groove further includes an intermediate section, the intermediate section and the first end being straight segments, the second end being offset relative to the first end, and at least one protrusion forming at the transition between the second end and the intermediate section, the protrusion forming the extrusion portion.

[0015] In one embodiment, a limiting groove is provided on the second working wing, the rolling element portion is located in the limiting groove, one end of the elastic column is located on the second working wing, and the free end of the elastic column protrudes from the top of the second working wing and extends into the groove.

[0016] In one embodiment, a limiting groove is provided on the second working wing, the rolling element portion is located in the limiting groove, one end of the elastic column is located on the second working wing, and the free end of the elastic column does not protrude from the top of the second working wing and does not extend into the groove.

[0017] In one embodiment, a limiting groove is formed on the side wall of the elastic column, the rolling element is located in the limiting groove, one end of the elastic column is located on the second working wing, and the free end of the elastic column protrudes from the top of the second working wing and extends into the groove.

[0018] In one embodiment, at least two limiting posts are protruding from the sidewall of the elastic post and spaced apart along the sliding direction of the cover. The rolling element is located between the limiting posts. One end of the elastic post is located at the second working wing, and the free end of the elastic post protrudes from the top of the second working wing and extends into the groove.

[0019] In one embodiment, the elastic column is a solid column, a hollow column, a hollow column with an axially extending slit, or the free end of the elastic column has two spaced-apart elastic arms; and / or

[0020] The rolling element is a ball, a solid roller, or a hollow roller.

[0021] In one embodiment, a limiting protrusion is formed on the second working wing, the rolling element is a ball or roller with a limiting hole, the rolling element passes through the limiting protrusion, one end of the elastic column is located on the second working wing, and the free end of the elastic column protrudes from the top of the second working wing and extends into the groove.

[0022] In one embodiment, the free end of the elastic column has two elastic arms spaced apart from each other, the sidewall of the groove is recessed to form a pressing portion, the rolling element is rotatably disposed in the pressing portion, the two elastic arms extend into the groove and can move relative to the groove, and the rolling element can press against one of the elastic arms to cause the elastic arm to flex.

[0023] In one embodiment, the elastic column is a solid column, a hollow column, or a hollow column with a slit extending axially, one sidewall of the groove is recessed to form a compression portion, and the other opposite sidewall of the groove is recessed to form a clearance portion, the compression portion corresponding to the clearance portion. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the self-locking bracket in Example 1;

[0027] Figure 2 for Figure 1 An exploded view of the self-locking bracket shown;

[0028] Figure 3 for Figure 1 The cross-sectional view of the self-locking bracket is shown. At this time, the cover is in the closed position, and the free end of the elastic post corresponds to the second end of the groove.

[0029] Figure 4 for Figure 3 A cross-sectional view from another perspective;

[0030] Figure 5 for Figure 1 The cross-sectional view of the self-locking bracket shown is shown. At this time, the cover is in the middle position, and the pressing part causes the free end of the elastic column to flexurally deform by pressing the rolling element.

[0031] Figure 6 for Figure 5 A cross-sectional view from another perspective;

[0032] Figure 7 for Figure 1 The cross-sectional view of the self-locking bracket is shown. At this time, the cover is in the open position, and the free end of the elastic post corresponds to the first end of the groove.

[0033] Figure 8 for Figure 7 A cross-sectional view from another perspective;

[0034] Figure 9 This is an exploded view of the self-locking bracket in Example 2;

[0035] Figure 10 for Figure 9 A cross-sectional view of the self-locking bracket after assembly, with the cover in the closed position and the free end of the elastic column corresponding to the second end of the groove;

[0036] Figure 11for Figure 10 A cross-sectional view from another perspective;

[0037] Figure 12 for Figure 9 A cross-sectional view of the self-locking bracket after assembly. At this time, the cover is in the middle position, and the pressing part produces flexural deformation by pressing the free end of the elastic column through the rolling element.

[0038] Figure 13 for Figure 12 A cross-sectional view from another perspective;

[0039] Figure 14 for Figure 9 A cross-sectional view of the self-locking bracket after assembly, with the cover in the open position and the free end of the elastic column corresponding to the first end of the groove;

[0040] Figure 15 for Figure 14 A cross-sectional view from another perspective;

[0041] Figure 16 This is an exploded view of the self-locking bracket in Example 3;

[0042] Figure 17 for Figure 16 A cross-sectional view of the self-locking bracket after assembly, with the cover in the closed position and the free end of the elastic column corresponding to the second end of the groove;

[0043] Figure 18 for Figure 17 A cross-sectional view from another perspective;

[0044] Figure 19 for Figure 16 A cross-sectional view of the self-locking bracket after assembly. At this time, the cover is in the middle position, and the pressing part produces flexural deformation by pressing the free end of the elastic column through the rolling element.

[0045] Figure 20 for Figure 19 A cross-sectional view from another perspective;

[0046] Figure 21 for Figure 16 A cross-sectional view of the self-locking bracket after assembly, with the cover in the open position and the free end of the elastic column corresponding to the first end of the groove;

[0047] Figure 22 for Figure 21 A cross-sectional view from another perspective;

[0048] Figure 23 This is an exploded view of the self-locking bracket in Example 4;

[0049] Figure 24 This is an exploded view of the self-locking bracket in Example 5;

[0050] Figure 25 for Figure 24 A perspective view of the self-locking bracket after assembly, with the cover in the closed position and the free end of the elastic post corresponding to the second end of the groove;

[0051] Figure 26 For along Figure 25 Sectional view of line AA in the middle;

[0052] Figure 27 for Figure 24 A perspective view of the self-locking bracket after assembly. At this time, the cover is in the middle position, and the pressing part causes the free end of the elastic column to flexurally deform by pressing the rolling element.

[0053] Figure 28 For along Figure 27 Sectional view of the middle BB line;

[0054] Figure 29 for Figure 24 A perspective view of the self-locking bracket after assembly, with the cover in the open position and the free end of the elastic post corresponding to the first end of the groove;

[0055] Figure 30 For along Figure 29 A cross-sectional view of the CC line;

[0056] Figures 31-34 There are four different shapes of grooves.

[0057] Explanation of reference numerals in the attached figures:

[0058] 100. Self-locking bracket; 110. Bracket body; 120. Cover; 130. Elastic column; 140. Rolling element; 111. Bow wire groove; 112. First working wing; 113. Second working wing; 114. Base; 150. Base plate; 115. Slide rail; 121. Slide track; 122. Groove; 123. First end; 124. Second end; 125. Middle section; 131. Free end; 126. Extrusion section; 116. Limiting groove.

[0059] 200. Self-locking bracket; 210. Bracket body; 220. Cover; 230. Elastic column; 240. Rolling element; 211. Bow wire groove; 212. First working wing; 213. Second working wing; 214. Base; 250. Base plate; 215. Slide rail; 221. Slide track; 222. Groove; 223. First end; 224. Second end; 225. Middle section; 231. Free end; 226. Extrusion part; 216. Limiting groove; 232. Elastic arm.

[0060] 300. Self-locking bracket; 310. Bracket body; 320. Cover; 330. Elastic column; 340. Rolling element; 311. Bow wire groove; 312. First working wing; 313. Second working wing; 314. Base; 350. Base plate; 315. Slide rail; 321. Slide rail; 322. Groove; 323. First end; 324. Second end; 325. Middle section; 331. Free end; 326. Extrusion section; 332. Elastic arm.

[0061] 400, self-locking bracket; 440, rolling element; 422, groove; 432, elastic arm.

[0062] 500. Self-locking bracket; 510. Bracket body; 520. Cover; 530. Elastic column; 540. Rolling element; 511. Bow wire groove; 512. First working wing; 513. Second working wing; 514. Base; 550. Base plate; 515. Slide rail; 521. Slide rail; 522. Groove; 523. First end; 524. Second end; 525. Middle section; 531. Free end; 526. Extrusion part; 532. Elastic arm.

[0063] 620. Cover; 621. Groove; 622. First end; 623. Second end; 624. Middle section; 625. Extrusion section. Detailed Implementation

[0064] It should be noted that the orthodontic appliances mentioned in this utility model refer to orthodontic brackets or buccal tubes, or other orthodontic appliances with similar functions and structures.

[0065] Unless otherwise stated, the following structural description requires the use of a frame of reference for the maxillary teeth to describe embodiments of the present invention. Therefore, as used herein, terms such as labial, lingual, mesial, distal, occlusal, and gingival, used to describe orthodontic appliances, are relative to the selected frame of reference. However, embodiments of the present invention are not limited to the selected frame of reference and the terms described, as orthodontic appliances can be used with other teeth in the oral cavity and in other directions.

[0066] For example, brackets or buccal tubes can also be coupled to the lingual surface of the teeth and fall within the scope of this invention. Those skilled in the art will recognize that the descriptive terms used herein may not be directly applicable when there are changes in the frame of reference. However, embodiments of this invention are intended to be independent of position and orientation within the oral cavity, and the related terminology used to describe the embodiments is merely to provide clear illustration of the embodiments in the drawings. Similarly, the related terms labial, lingual, mesial, distal, occlusal, and gingival in no way limit this invention to a particular position or orientation.

[0067] The terms labial, lingual, mesial, distal, occlusal, and gingival are industry terms used in orthodontic treatment. Taking an upper jaw tooth as an example, the tooth surface can be roughly divided into six surfaces. The surface of the tooth that occludes with the lower jaw teeth is the occlusal surface; the surface of the tooth that connects to the attached gingival tissue is the gingival surface; the occlusal surface and the gingival surface are opposite each other, and the direction formed by the occlusal surface and the gingival surface is also called the gingio-occlusal direction. The surface of the tooth facing the lips is the labial surface, and the surface of the tooth facing the tongue is the lingual surface; the labial surface and the lingual surface are opposite each other, and the direction formed by the labial surface and the lingual surface is also called the labiolingual direction. The two surfaces of the tooth that contact adjacent teeth are the mesial surface and the distal surface, the difference being their distance from the center; the direction formed by the two is also called the mesiodistal direction.

[0068] Furthermore, in the description of direction, "lip-tongue direction" generally refers to two directions. However, "lip-tongue direction" specifically refers to a single direction, that is, from the side of the lips to the side of the tongue, and this is used to distinguish them.

[0069] Example 1

[0070] Please see Figures 1 to 8 The self-ligating bracket 100 in Embodiment 1 includes a bracket body 110, a cover 120, an elastic post 130, and a rolling element 140. Specifically, the bracket body 110 is provided with an archwire groove 111, with a first working wing 112 and a second working wing 113 on opposite sides of the archwire groove 111. The bottom of the first working wing 112 and the bottom of the second working wing 113 are connected by a base 114. The self-ligating bracket 100 also includes a base plate 150, which is located at the bottom of the base 114. The bottom surface of the base plate 150 is typically provided with a mesh structure. When orthodontic treatment is required, the base plate 150 is adhered to the patient's teeth using an adhesive.

[0071] The cover 120 is slidably disposed on the second working wing 113 to open or close the bowwire groove 111. Specifically, the second working wing 113 is provided with a slide rail 115, and the bottom of the cover 120 is provided with a slide path 121 that cooperates with the slide rail 115, thereby enabling the cover 120 to slide along the second working wing 113. Of course, in other embodiments, the slide path 121 can also be provided on the second working wing 113, and the slide rail 115 that cooperates with the slide path 121 can also be provided on the bottom of the cover 120, which can also achieve the purpose of enabling the cover 120 to slide along the second working wing 113.

[0072] The bottom surface of the cover 120 is provided with a groove 122, which extends approximately along the sliding direction of the cover 120. Specifically, the groove 122 has a first end 123 corresponding to the open position of the cover 120 and a second end 124 corresponding to the closed position of the cover 120 along the sliding direction of the cover 120. One end of the elastic post 130 is provided on the second working wing 113, and the other end of the elastic post 130 is a free end 131. Specifically, a mounting hole can be provided on the second working wing 113, and one end of the elastic post 130 extends into the mounting hole. The mounting hole can also extend to and through the base 114, and be fixed to the base plate 150 by welding or adhesive. Alternatively, in other embodiments, the mounting hole may not extend to the base 114. Alternatively, the elastic post 130 can be directly welded or integrally formed on the second working wing 113, which can also achieve the purpose of the elastic post 130 being provided on the second working wing 113.

[0073] The rolling element 140 is at least partially located within the groove 122. In Embodiment 1, the rolling element 140 is a ball bearing, with part of it located within the groove 122 and part within the second working wing 113. During the sliding of the cover 120 relative to the second working wing 113, the rolling element 140 is confined on the second working wing 113 and does not slide with the cover 120.

[0074] At least one pressing portion 126, formed by the sidewall of the groove 122, exists between the first end 123 and the second end 124 of the groove 122. The pressing portion 126 compresses the free end 131 of the elastic column 130 through the rolling element 140, causing the free end 131 of the elastic column 130 to flex. Specifically, in Embodiment 1, the pressing portion 126 is formed by protrusion from the sidewall of the groove 122. For example, the groove 122 also has an intermediate section 125 located between the first end 123 and the second end 124, and the intermediate section 125 communicates with the first end 123 and the second end 124. At least one sidewall of the intermediate section 125 protrudes to form the pressing portion 126, and the rolling element 140 moves and rolls relative to the pressing portion 126. In Embodiment 1, one sidewall of the intermediate section 125 protrudes to form the pressing portion 126, while the other sidewall does not form a pressing portion 126 and does not compress the rolling element 140. Of course, in other embodiments, extrusion portions 126 may be formed protruding from both opposite sidewalls of the intermediate section 125. The cross-sectional dimension of the first end 123 is larger than that of the intermediate section 125, and the cross-sectional dimension of the second end 124 is larger than that of the intermediate section 125. Of course, in other embodiments, the groove 122 is an arc-shaped groove as a whole.

[0075] Please see Figure 4 , Figure 6 and Figure 8A limiting groove 116 is provided on the second working wing 113. Part of the rolling element 140 is located within the limiting groove 116, and another part is located within the groove 122. The limiting groove 116 mainly restricts the movement of the rolling element 140 along the sliding direction of the cover 120, but does not restrict the movement of the rolling element 140 along the proximal-distal direction. The limiting groove 116 can be a closed groove (i.e., the sidewalls of the groove are complete sidewalls) or a partially closed groove (i.e., the sidewalls of the groove are incomplete sidewalls, which can be formed by several cross-sections). One end of the elastic post 130 is located on the second working wing 113, and the free end 131 of the elastic post 130 does not protrude from the top of the second working wing 113 and does not extend into the groove 122. In Embodiment 1, the second working wing 113 also has a clearance groove 117, which is connected to the limiting groove 116. When the elastic column 130 is deformed by the rolling element 140, the clearance groove 117 provides clearance space for the deformation of the elastic column 130.

[0076] Specifically, in embodiment 1, the elastic column 130 is a solid column, with one end disposed on the second working wing 113. The free end 131 of the solid column does not protrude from the top of the second working wing 113 and does not extend into the groove 122. The rolling element 140 is a ball, and it is a solid ball. When the ball is compressed by the compression part 126, it can move in the proximal-distal direction, thereby compressing the solid column and causing it to flex. Of course, in other embodiments, the elastic column 130 can also be a hollow column, a hollow column with a slit extending axially, or the free end 131 of the elastic column 130 can be two elastic arms spaced apart from each other. The rolling element 140 can also be a solid roller or a hollow roller.

[0077] In other embodiments, a limiting protrusion is formed on the second working wing 113, the rolling element 140 is a ball or roller with a limiting hole, the rolling element 140 passes through the limiting protrusion, one end of the elastic column 130 is located on the second working wing 113, and the free end 131 of the elastic column 130 protrudes from the top of the second working wing 113 and extends into the groove 122.

[0078] Please see Figure 3 and Figure 4At this time, the self-ligating bracket 100 has its cover 120 in the closed state. Part of the rolling element 140 is located at the second end 124 of the groove 122 in the cover 120, and another part is located within the limiting groove 116. The elastic post 130 is in its initial state. When a patient wears the self-ligating bracket 100 for orthodontic treatment, the cover 120 is normally in the closed state. The cover 120 and the elastic post 130 cooperate to keep the cover 120 in the closed position. When it is necessary to open the cover 120 to change the archwire, an external force is applied to the cover 120 using a tool. This external force overcomes the cooperating force between the elastic post 130 and the cover 120, causing the cover 120 to slide relative to the second working wing 113. (See also...) Figure 5 and Figure 6 The cover 120 slides relative to the second working wing 113 to a position where half of the bowwire groove 111 is exposed. At this time, a portion of the rolling element 140 of the self-locking bracket 100 is located in the middle section 125 of the groove 122 of the cover 120, and the rolling element 140 is pressed by the pressing part 126. This, in turn, causes the rolling element 140 to press the free end 131 of the elastic column 130, resulting in flexural deformation of the free end 131 of the elastic column 130. (See also...) Figure 7 and Figure 8 At this time, the cover 120 of the self-locking bracket 100 is in the open state, part of the rolling element 140 is located at the first end 123 of the groove 122, and the other part is located in the limiting groove 116, and the elastic column 130 returns to its initial state. It should be noted that the initial state of the elastic column 130 can be that the rolling element 140 and the elastic column 130 are not in contact with any force, or are in contact with any force, and correspondingly, the elastic column 130 is in a state of no deformation or slight deformation.

[0079] Therefore, in the process of opening or closing the archwire groove 111 of the cover 120, the pressing part 126 formed by the protrusion of the side wall of the groove 122 compresses the free end 131 of the elastic column 130 through the rolling element 140, causing the free end 131 of the elastic column 130 to flex and deform, thereby realizing the opening and closing of the cover 120. The structure for controlling the opening and closing utilizes the rolling friction generated between the rolling element 140 and the side wall of the groove 122. Compared with the traditional sliding friction between the side wall of the groove 122 of the cover 120 and the elastic column 130, the rolling friction can reduce wear, thereby increasing the service life of the cover 120 and the elastic column 130, and thus increasing the overall service life of the self-locking bracket 100.

[0080] Example 2

[0081] Please see Figures 9 to 15The self-locking bracket 200 in Embodiment 2 differs from that in Embodiment 1 in several ways, including but not limited to: one end of the elastic column 230 in Embodiment 2 is a solid column; the free end 231 of the elastic column 230 has two spaced-apart elastic arms 232; and the free end 231 of the elastic column 230 protrudes from the top of the second working wing 213 and extends into the groove 222. Correspondingly, the specific structure of the groove 222 in Embodiment 2 differs from that in Embodiment 1.

[0082] Specifically, the self-ligating bracket 200 in Embodiment 2 includes a bracket body 210, a cover 220, an elastic post 230, and a rolling element 240. Specifically, the bracket body 210 is provided with an archwire groove 211, with a first working wing 212 and a second working wing 213 on opposite sides of the archwire groove 211. The bottom of the first working wing 212 and the bottom of the second working wing 213 are connected by a base 214. The self-ligating bracket 200 also includes a base plate 250, located at the bottom of the base 214. The bottom surface of the base plate 250 typically has a textured structure. When orthodontic treatment is required, the base plate 250 is adhered to the patient's teeth using an adhesive.

[0083] The cover 220 is slidably disposed on the second working wing 213 to open or close the bowwire groove 211. Specifically, the second working wing 213 is provided with a slide rail 215, and the bottom of the cover 220 is provided with a slide path 221 that cooperates with the slide rail 215, thereby enabling the cover 220 to slide along the second working wing 213. Of course, in other embodiments, a slide path 221 can also be provided on the second working wing 213, and a slide rail 215 that cooperates with the slide path 221 can be provided at the bottom of the cover 220, which can also achieve the purpose of enabling the cover 220 to slide along the second working wing 213.

[0084] The bottom surface of the cover 220 is provided with a groove 222, which extends approximately along the sliding direction of the cover 220. Specifically, the groove 222 has a first end 223 corresponding to the open position of the cover 220 and a second end 224 corresponding to the closed position of the cover 220 along the sliding direction of the cover 220. One end of the elastic post 230 is provided on the second working wing 213, and the other end of the elastic post 230 is a free end 231. Specifically, a mounting hole can be provided on the second working wing 213, and one end of the elastic post 230 extends into the mounting hole. The mounting hole can also extend to and through the base 214, and be fixed to the base plate 250 by welding or adhesive. Alternatively, in other embodiments, the mounting hole may not extend to the base 214. Alternatively, the elastic post 230 can be directly welded or integrally formed on the second working wing 213, which can also achieve the purpose of the elastic post 230 being provided on the second working wing 213.

[0085] The rolling element 240 is at least partially located within the groove 222. In Embodiment 2, the rolling element 240 is a ball bearing, partially located within the groove 222 and partially located within the second working wing 213. During the sliding of the cover 220 relative to the second working wing 213, the rolling element 240 is confined on the second working wing 213 and will not slide with the cover 220.

[0086] At least one compression portion 226 formed by the sidewall of the groove 222 exists between the first end 223 and the second end 224 of the groove 222. The compression portion 226 compresses the free end 231 of the elastic column 230 through the rolling element 240, causing the free end 231 of the elastic column 230 to flexurally deform. Specifically, in embodiment 2, the compression portion 226 is formed by protrusion from the sidewall of the groove 222. For example, the groove 222 also has an intermediate section 225 located between the first end 223 and the second end 224, and the intermediate section 225 is connected to the first end 223 and the second end 224. At least one sidewall of the intermediate section 225 protrudes to form the compression portion 226, and the rolling element 240 moves and rolls relative to the compression portion 226. In embodiment 2, one sidewall of the intermediate section 225 protrudes to form the compression portion 226, while the other sidewall does not form a compression portion 226 and does not compress the rolling element 240. Of course, in other embodiments, extrusion portions 226 may be formed protruding from both opposite sidewalls of the intermediate section 225. The cross-sectional dimension of the first end 223 is larger than that of the intermediate section 225, and the cross-sectional dimension of the second end 224 is larger than that of the intermediate section 225. Of course, in other embodiments, the groove 222 is an arc-shaped groove as a whole.

[0087] A limiting groove 216 is provided on the second working wing 213. Part of the rolling element 240 is located within the limiting groove 216, and another part is located within the groove 222. The limiting groove 216 primarily restricts the movement of the rolling element 240 along the sliding direction of the cover 220, but does not restrict its movement along the proximal-distal direction. The limiting groove 216 can be a closed groove (i.e., the sidewalls of the groove are complete) or a partially closed groove (i.e., the sidewalls of the groove are incomplete and can be formed by several cross-sections). One end of the elastic column 230 is located on the second working wing 213, and the free end 231 of the elastic column 230 protrudes from the top of the second working wing 213 and extends into the groove 222.

[0088] In other embodiments, a limiting groove 216 may be formed on the sidewall of the elastic post 230, with the rolling element 240 partially located within the limiting groove 216. One end of the elastic post 230 is located on the second working wing 213, and the free end 231 of the elastic post 230 protrudes from the top of the second working wing 213 and extends into the groove 222. Alternatively, at least two limiting posts protruding from the sidewall of the elastic post 230 and spaced apart along the sliding direction of the cover 220 may be formed, with the rolling element 240 located between the limiting posts. One end of the elastic post 230 is located on the second working wing 213, and the free end 231 of the elastic post 230 protrudes from the top of the second working wing 213 and extends into the groove 222. The purpose of limiting the rolling element 240 can be achieved.

[0089] Specifically, in embodiment 2, one end of the elastic column 230 is a solid column, and one end of the elastic column 230 is disposed on the second working wing 213. The free end 231 of the elastic column 230 has two mutually spaced elastic arms 232, and the free end 231 of the elastic column 230 protrudes from the top of the second working wing 213 and extends into the groove 222. The rolling element 240 is a ball, and it is a solid ball. When the ball is squeezed by the squeezing part 226, it can move in the proximal-distal direction, thereby squeezing the elastic arm 232 of the elastic column 230 and causing the elastic arm 232 to flexurally deform. Of course, in other embodiments, the elastic column 230 can also be a hollow column, a hollow column with a slit extending axially, or a solid column, etc. The rolling element 240 can also be a solid roller or a hollow roller.

[0090] In other embodiments, a limiting protrusion is formed on the second working wing 213, the rolling element 240 is a ball or roller with a limiting hole, the rolling element 240 passes through the limiting protrusion, one end of the elastic column 230 is located on the second working wing 213, and the free end 231 of the elastic column 230 protrudes from the top of the second working wing 213 and extends into the groove 222.

[0091] In embodiment 2, one sidewall of the intermediate section 225 protrudes to form a pressing portion 226, and there is one rolling element 240. The rolling element 240 presses one of the elastic arms 232 to cause deformation; the other sidewall does not form a pressing portion 226 and does not press the rolling element 240. Of course, in other embodiments, the opposing sidewalls of the intermediate section 225 of the groove 222 can both protrude to form pressing portions 226. Correspondingly, there can be two rolling elements 240, and the two rolling elements 240 press the two elastic arms 232 respectively, causing the two elastic arms 232 to flexurally deform.

[0092] Please see Figure 10 and Figure 11At this time, the self-ligating bracket 200 has its cover 220 in the closed state. Part of the rolling element 240 is located at the second end 224 of the groove 222 in the cover 220, and the other part is located within the limiting groove 216. The elastic arm 232 is in its initial state. When a patient wears the self-ligating bracket 200 for orthodontic treatment, the cover 220 is normally in the closed state. The cover 220 and the elastic post 230 cooperate to keep the cover 220 in the closed position. When it is necessary to open the cover 220 to change the archwire, an external force is applied to the cover 220 using a tool. This external force overcomes the cooperating force between the elastic post 230 and the cover 220, causing the cover 220 to slide relative to the second working wing 213. Please refer to [link to relevant documentation]. Figure 12 and Figure 13 The cover 220 slides relative to the second working wing 213 to a position where half of the bowwire groove 211 is exposed. At this time, a portion of the rolling element 240 of the self-locking bracket 200 is located in the middle section 225 of the groove 222 of the cover 220, and the rolling element 240 is pressed by the pressing part 226, thereby pressing the elastic arm 232 and causing the elastic arm 232 to flex. Please refer to Figure 14 and Figure 15 At this time, the cover 220 of the self-locking bracket 200 is in the open state, part of the rolling element 240 is located at the first end 223 of the groove 222, and the other part is located in the limiting groove 216, and the elastic arm 232 returns to its initial state. It should be noted that the initial state of the elastic arm 232 can be that the rolling element 240 and the elastic arm 232 are not in contact with force, or are not in contact, or are in contact with force. Correspondingly, the elastic arm 232 is in a state of no deformation or slight deformation.

[0093] Therefore, in the process of opening or closing the archwire groove 211 of the cover 220, the pressing part 226 formed by the protrusion of the side wall of the groove 222 compresses the elastic arm 232 through the rolling element 240, causing the elastic arm 232 to flex and deform, thereby realizing the opening and closing of the cover 220. The structure that controls the opening and closing utilizes the rolling friction generated between the rolling element 240 and the side wall of the groove 222. Compared with the traditional sliding friction between the side wall of the groove 222 of the cover 220 and the elastic post 230, the rolling friction can reduce wear, thereby increasing the service life of the cover 220 and the elastic post 230, and thus increasing the overall service life of the self-locking bracket 200.

[0094] Example 3

[0095] Please see Figures 16 to 22The self-ligating bracket 300 in Embodiment 3 includes a bracket body 310, a cover 320, an elastic post 330, and a rolling element 340. Specifically, the bracket body 310 is provided with an archwire groove 311, with a first working wing 312 and a second working wing 313 on opposite sides of the archwire groove 311. The bottom of the first working wing 312 and the bottom of the second working wing 313 are connected by a base 314. The self-ligating bracket 300 also includes a base plate 350, which is located at the bottom of the base 314. The bottom surface of the base plate 350 is usually provided with a mesh structure. When a patient needs orthodontic treatment, the base plate 350 is adhered to the patient's teeth with an adhesive.

[0096] The cover 320 is slidably disposed on the second working wing 313 to open or close the bowwire groove 311. Specifically, the second working wing 313 is provided with a slide rail 315, and the bottom of the cover 320 is provided with a slide rail 321 that cooperates with the slide rail 315, thereby enabling the cover 320 to slide along the second working wing 313. Of course, in other embodiments, a slide rail 321 can also be provided on the second working wing 313, and a slide rail 315 that cooperates with the slide rail 321 can be provided on the bottom of the cover 320, which can also achieve the purpose of enabling the cover 320 to slide along the second working wing 313.

[0097] The bottom surface of the cover 320 is provided with a groove 322, which extends approximately along the sliding direction of the cover 320. Specifically, the groove 322 has a first end 323 corresponding to the open position of the cover 320 and a second end 324 corresponding to the closed position of the cover 320 along the sliding direction of the cover 320. One end of the elastic post 330 is provided on the second working wing 313, and the other end of the elastic post 330 is a free end 331. Specifically, a mounting hole can be provided on the second working wing 313, and one end of the elastic post 330 extends into the mounting hole. The mounting hole can also extend to and through the base 314, and be fixed to the base plate 350 by welding or adhesive. Alternatively, in other embodiments, the mounting hole may not extend to the base 314. Alternatively, the elastic post 330 can be directly welded or integrally formed on the second working wing 313, which can also achieve the purpose of the elastic post 330 being provided on the second working wing 313.

[0098] The rolling element 340 is at least partially located within the groove 322. In embodiment 3, the rolling element 340 is a ball bearing, and the rolling element 340 is partially located within the groove 322. During the sliding of the cover 320 relative to the second working wing 313, the rolling element 340 is confined within the groove 322 of the cover 320 and slides together with the cover 320.

[0099] At least one compression portion 326 formed by the sidewall of the groove 322 exists between the first end 323 and the second end 324 of the groove 322. The compression portion 326 compresses the free end 331 of the elastic column 330 through the rolling element 340, causing the free end 331 of the elastic column 330 to flexurally deform. Specifically, in embodiment 3, the compression portion 326 is formed by the inward concavity of the sidewall of the groove 322. For example, the compression portion 326 is formed by the inward concavity of the sidewall of the middle section 325 of the groove 322, and the rolling element 340 is located within this inward concavity, between the first end 323 and the second end 324. In embodiment 3, the compression portion 326 is formed by the inward concavity of one sidewall of the middle section 325 of the groove 322, while the other sidewall does not form a compression portion 326 and does not compress the rolling element 340. Of course, in other embodiments, the two opposite sidewalls of the middle section 325 of the groove 322 may be recessed to form a pressing part 326, and correspondingly, the number of rolling elements 340 is also two.

[0100] Specifically, in embodiment 3, one end of the elastic column 330 is a solid column, and one end of the elastic column 330 is disposed on the second working wing 313. The free end 331 of the elastic column 330 has two mutually spaced elastic arms 332. The free end 331 of the elastic column 330 protrudes from the top of the second working wing 313 and extends into the groove 322, and the free end 331 of the elastic column 330 can move relative to the groove 322. The rolling element 340 is rotatably disposed on the pressing part 326. The rolling element 340 is a ball, and it is a solid ball. When the ball slides with the cover 320 to the middle section 325, the ball interferes with one of the elastic arms 332. The ball is pressed by the pressing part 326, which in turn presses one of the elastic arms 332 of the elastic column 330, causing the elastic arm 332 to flex and deform.

[0101] In other embodiments, a limiting protrusion is formed on the second working wing 313, the rolling element 340 is a ball or roller with a limiting hole, the rolling element 340 passes through the limiting protrusion, one end of the elastic column 330 is located on the second working wing 313, and the free end 331 of the elastic column 330 protrudes from the top of the second working wing 313 and extends into the groove 322.

[0102] In embodiment 3, one side wall of the intermediate section 325 is recessed to form a pressing portion 326, and there is one rolling element 340. The rolling element 340 presses one of the elastic arms 332 to cause deformation; the other side wall does not form a pressing portion 326 and does not press the rolling element 340. Of course, in other embodiments, the opposing side walls of the intermediate section 325 of the groove 322 can both be recessed to form pressing portions 326. Correspondingly, there can be two rolling elements 340, and the two rolling elements 340 press the two elastic arms 332 respectively, causing the two elastic arms 332 to flexurally deform.

[0103] Please see Figure 17 and Figure 18 At this time, the self-ligating bracket 300 has its cover 320 in the closed state, the elastic arm 332 is located at the second end 324 of the groove 322 of the cover 320, and the rolling element 340 is located within the groove 322 of the cover 320 and on the side of the elastic arm 332 facing the first working wing 312. The elastic arm 332 is in its initial state. When the patient wears the self-ligating bracket 300 for orthodontic treatment, the cover 320 is normally in the closed state. The cover 320 and the elastic post 330 cooperate to keep the cover 320 in the closed position. When it is necessary to open the cover 320 to change the archwire, an external force is applied to the cover 320 using a tool. The external force overcomes the cooperating force between the elastic post 330 and the cover 320, causing the cover 320 to slide relative to the second working wing 313. Please refer to [link to relevant documentation]. Figure 19 and Figure 20 The cover 320 slides relative to the second working wing 313 to a position where half of the bowwire groove 311 is exposed. At this time, the self-locking bracket 300 and the elastic arm 332 are located in the middle part of the groove 322 of the cover 320. The elastic arm 332 interferes with the rolling element 340, and the rolling element 340 squeezes the elastic arm 332, causing the elastic arm 332 to flex and deform. Please refer to Figure 21 and Figure 22 At this time, the self-locking bracket 300 has its cover 320 in the open state, and the elastic arm 332 is located at the first end 323 of the groove 322 of the cover 320. The elastic arm 332 returns to its initial state, and the rolling element 340 is located in the groove 322 of the cover 320 and on the side of the elastic arm 332 facing away from the first working wing 312. It should be noted that the initial state of the elastic arm 332 can be that the elastic arm 332 is not in contact with the side wall of the groove 322, or it is in contact with the side wall of the groove 322. Correspondingly, the elastic arm 332 is in a state of no deformation or slight deformation.

[0104] Therefore, in the process of opening or closing the archwire groove 311 of the cover 320, the pressing part 326 formed by the concave sidewall of the groove 322 compresses the elastic arm 332 through the rolling element 340, causing the elastic arm 332 to flex and deform, thereby realizing the opening and closing of the cover 320. The structure controlling the opening and closing utilizes the rolling friction generated between the rolling element 340 and the sidewall of the groove 322. Compared with the traditional sliding friction between the sidewall of the groove 322 of the cover 320 and the elastic post 330, the rolling friction can reduce wear, thereby increasing the service life of the cover 320 and the elastic post 330, and thus increasing the overall service life of the self-locking bracket 300.

[0105] Of course, in other embodiments, the elastic column 330 can also be a hollow column, a hollow column with a slit extending along the axial direction, or a solid column, etc. Correspondingly, one side wall of the groove 322 is recessed to form a pressing part 326, and the other opposite side wall of the groove 322 is recessed to form a relief position. The pressing part 326 corresponds to the relief position. When the pressing part 326 presses the rolling element 340 and then the rolling element 340 presses the elastic column 330 to cause it to flexural deformation, the relief position can provide relief space.

[0106] Example 4

[0107] Please see Figure 23 The self-locking groove 400 in Embodiment 4 differs from that in Embodiment 3 in that the rolling element 440 can also be a hollow roller. A portion of the hollow roller is located within the concave portion of the groove 422, and the arc-shaped outer surface of the hollow roller is pressed against the elastic arm 432, causing the elastic arm 432 to flex. Of course, in other embodiments, the rolling element 440 can also be a solid roller.

[0108] Example 5

[0109] Please see Figures 24 to 30 The self-ligating bracket 500 in Embodiment 5 includes a bracket body 510, a cover 520, an elastic post 530, and a rolling element 540. Specifically, the bracket body 510 is provided with an archwire groove 511, with a first working wing 512 and a second working wing 513 on opposite sides of the archwire groove 511. The bottom of the first working wing 512 and the bottom of the second working wing 513 are connected by a base 514. The self-ligating bracket 500 also includes a base plate 550, which is located at the bottom of the base 514. The bottom surface of the base plate 550 is usually provided with a mesh structure. When a patient needs orthodontic treatment, the base plate 550 is adhered to the patient's teeth with an adhesive.

[0110] The cover 520 is slidably disposed on the second working wing 513 to open or close the bowwire groove 511. Specifically, the second working wing 513 is provided with a slide rail 515, and the bottom of the cover 520 is provided with a slide rail 521 that cooperates with the slide rail 515, thereby enabling the cover 520 to slide along the second working wing 513. Of course, in other embodiments, a slide rail 521 can also be provided on the second working wing 513, and a slide rail 515 that cooperates with the slide rail 521 can be provided at the bottom of the cover 520, which can also achieve the purpose of enabling the cover 520 to slide along the second working wing 513.

[0111] The second working wing 513 is provided with a groove 522, which extends approximately along the sliding direction of the cover 520. Specifically, the groove 522 has a first end 523 corresponding to the open position of the cover 520 and a second end 524 corresponding to the closed position of the cover 520 along the sliding direction of the cover 520. One end of the elastic post 530 is provided on the cover 520, and the other end of the elastic post 530 is a free end 531. Specifically, a mounting hole can be opened on the cover 520, and one end of the elastic post 530 can extend into the mounting hole. Alternatively, the elastic post 530 can be directly welded or integrally formed on the cover 520, which can also achieve the purpose of setting the elastic post 530 on the cover 520.

[0112] The rolling element 540 is completely located within the groove 522. In embodiment 5, the rolling element 540 is a ball bearing, and it is completely located within the groove 522 of the second working wing 513. During the sliding of the cover 520 relative to the second working wing 513, the rolling element 540 is confined on the second working wing 513 and does not slide with the cover 520. The elastic post 530 is located on the cover 520 and moves with the sliding of the cover 520. Alternatively, in other embodiments, the rolling element 540 may be partially located in the groove 522 and partially located in the cover 520.

[0113] In other embodiments, a limiting protrusion is formed on the second working wing 513, the rolling element 540 is a ball or roller with a limiting hole, the rolling element 540 passes through the limiting protrusion, one end of the elastic column 530 is located on the second working wing 513, and the free end 531 of the elastic column 530 protrudes from the top of the second working wing 513 and extends into the groove 522.

[0114] At least one compression portion 526 formed by the sidewall of the groove 522 exists between the first end 523 and the second end 524 of the groove 522. The compression portion 526 compresses the free end 531 of the elastic column 530 through the rolling element 540, causing the free end 531 of the elastic column 530 to flexurally deform. Specifically, in embodiment 5, the compression portion 526 is formed by the inward concavity of the sidewall of the groove 522. For example, the groove 522 also has an intermediate section 525, which is located between the first end 523 and the second end 524 and is connected to the first end 523 and the second end 524. At least one sidewall of the intermediate section 525 is inwardly concave to form the compression portion 526, and the rolling element 540 is located in the compression portion 526. In embodiment 5, one sidewall of the intermediate section 525 is inwardly concave to form the compression portion 526, while the other sidewall does not form a compression portion 526 and does not compress the rolling element 540. Of course, in other embodiments, the two opposite sidewalls of the intermediate section 525 may be recessed to form a pressing portion 526.

[0115] Specifically, in embodiment 5, one end of the elastic column 530 is a solid column, and one end of the elastic column 530 is disposed on the cover 520. The free end 531 of the elastic column 530 has two spaced-apart elastic arms 532, and the free end 531 of the elastic column 530 protrudes from the bottom of the cover 520 and extends into the groove 522. The rolling element 540 is rotatably disposed on the pressing part 526. The rolling element 540 is a ball, and it is a solid ball. When the elastic column 530 slides with the cover 520 to the middle section 525, the ball interferes with one of the elastic arms 532. The ball is pressed by the pressing part 526, which in turn presses one of the elastic arms 532 of the elastic column 530, causing the elastic arm 532 to flex and deform. Of course, in other embodiments, the elastic column 530 can also be a hollow column, a hollow column with a slit extending axially, or a solid column. The rolling element 540 can also be a solid roller or a hollow roller.

[0116] In embodiment 5, one side wall of the intermediate section 525 is recessed to form a pressing portion 526, and there is one rolling element 540. The rolling element 540 presses one of the elastic arms 532 to cause deformation; the other side wall does not form a pressing portion 526 and does not press the rolling element 540. Of course, in other embodiments, the opposing side walls of the intermediate section 525 of the groove 522 can both be recessed to form pressing portions 526. Correspondingly, there can be two rolling elements 540. The two rolling elements 540 press the two elastic arms 532 respectively, causing the two elastic arms 532 to flexurally deform.

[0117] Please see Figure 25 and Figure 26 At this time, the self-ligating bracket 500 has its cover 520 in the closed state, the rolling element 540 located within the groove 522, and the elastic arm 532 located at the second end 524 of the groove 522 on the second working wing 513, in its initial state. When a patient wears the self-ligating bracket 500 for orthodontic treatment, the cover 520 is normally in the closed state, with the cover 520 and the elastic post 530 working together to keep the cover 520 in the closed position. When it is necessary to open the cover 520 to change the archwire, an external force is applied to the cover 520 using a tool. This external force overcomes the cooperating force between the elastic post 530 and the cover 520, causing the cover 520 to slide relative to the second working wing 513. (See also...) Figure 27 and Figure 28 The cover 520 slides relative to the second working wing 513 to a position where half of the bowwire groove 511 is exposed. At this time, the self-locking bracket 500's rolling element 540 is still located in the middle section 525 of the groove 522 of the cover 520, and the elastic arm 532 is located in the middle section 525 of the groove 522. The elastic arm 532 interferes with the rolling element 540, and the rolling element 540 is squeezed by the pressing part 526. In turn, the rolling element 540 squeezes the elastic arm 532, causing the elastic arm 532 to flex and deform. Please refer to Figure 29 and Figure 30 At this time, the cover 520 of the self-locking bracket 500 is in the open state, and the elastic arm 532 is located at the first end 523 of the groove 522 on the second working wing 513. The elastic arm 532 returns to its initial state. It should be noted that the initial state of the elastic arm 532 can be that the elastic arm 532 is not in contact with the side wall of the groove 522, or it is in contact with the side wall of the groove 522 under force. Correspondingly, the elastic arm 532 is in a state of no deformation or slight deformation.

[0118] Therefore, in the process of opening or closing the archwire groove 511 of the cover 520, the pressing part 526 formed by the concave sidewall of the groove 522 compresses the elastic arm 532 through the rolling element 540, causing the elastic arm 532 to flex and deform, thereby realizing the opening and closing of the cover 520. The structure controlling the opening and closing utilizes the rolling friction generated between the rolling element 540 and the sidewall of the groove 522. Compared with the traditional sliding friction between the sidewall of the groove 522 of the cover 520 and the elastic post 530, rolling friction can reduce wear, thereby increasing the service life of the cover 520 and the elastic post 530, and thus increasing the overall service life of the self-locking bracket 500.

[0119] Please see Figures 31 to 34 The shape of the groove 621 provided on the cover 620 in four different embodiments is shown. For details, please refer to... Figure 31 In one embodiment, the cover 620 has a groove 621 on its bottom surface. The groove 621 has a first end 622 corresponding to the open position of the cover 620 and a second end 623 corresponding to the closed position of the cover 620 along the sliding direction of the cover 620. The groove 621 also has an intermediate section 624, which is located between the first end 622 and the second end 623 and is connected to the first end 622 and the second end 623. At least one side wall of the intermediate section 624 protrudes to form a pressing part 625. The rolling element moves and rolls relative to the pressing part 625. The groove 621 is an arc-shaped groove as a whole.

[0120] Please see Figure 32In one embodiment, the cover 620 has a groove 621 on its bottom surface. The groove 621 has a first end 622 corresponding to the open position of the cover 620 and a second end 623 corresponding to the closed position of the cover 620 along the sliding direction of the cover 620. The groove 621 also has a straight segment portion, which is located between the first end 622 and the second end 623 and is connected to the first end 622 and the second end 623. The cross-sectional dimension of the first end 622 is larger than the cross-sectional dimension of the straight segment portion, and the cross-sectional dimension of the second end 623 is larger than the cross-sectional dimension of the straight segment portion. The sidewall of the straight segment portion forms the extrusion part 625.

[0121] Please see Figure 33 In one embodiment, the cover 620 has a groove 621 on its bottom surface. The groove 621 has a first end 622 corresponding to the open position of the cover 620 and a second end 623 corresponding to the closed position of the cover 620 along the sliding direction of the cover 620. The groove 621 also includes an intermediate section 624. The intermediate section 624 and the first end 622 are both straight segments. The second end 623 is an enlarged portion. The cross-sectional dimension of the second end 623 is larger than the cross-sectional dimension of the intermediate section 624 so that at least one protrusion is formed at the transition between the second end 623 and the intermediate section 624. The protrusion forms the pressing part 625.

[0122] Please see Figure 34 In one embodiment, the cover 620 has a groove 621 on its bottom surface. The groove 621 has a first end 622 corresponding to the open position of the cover 620 and a second end 623 corresponding to the closed position of the cover 620 along the sliding direction of the cover 620. The groove 621 also includes an intermediate section 624. The intermediate section 624 and the first end 622 are straight segments. The second end 623 is offset relative to the first end 622. At least one protrusion is formed at the transition between the second end 623 and the intermediate section 624. The protrusion forms the pressing part 625.

[0123] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0124] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

[0125] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0126] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0127] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0128] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0129] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

Claims

1. A self-locking bracket, characterized in that, The self-locking bracket includes a bracket body, a cover, an elastic column, and a rolling element. The bracket body is provided with a bow wire groove. The bow wire groove has a first working wing and a second working wing on opposite sides. The cover is slidably disposed on the second working wing to open or close the bow wire groove. The bottom surface of the cover is provided with a groove, one end of the elastic column is provided on the second working wing, and the other end of the elastic column is a free end; or one end of the elastic column is provided on the cover, the other end of the elastic column is a free end, and the second working wing is provided with a groove. The groove has a first end corresponding to the open position of the cover and a second end corresponding to the closed position of the cover along the sliding direction of the cover. The rolling element is at least partially located in the groove. There is at least one extrusion part formed by the sidewall of the groove between the first end and the second end of the groove. The extrusion part causes the free end of the elastic column to flex and deform by extruding the free end of the elastic column through the rolling element.

2. The self-locking bracket according to claim 1, characterized in that, The groove also has an intermediate section located between the first end and the second end, and the intermediate section is connected to the first end and the second end. At least one side wall of the intermediate section protrudes to form a pressing part, and the rolling element moves and rolls relative to the pressing part.

3. The self-locking bracket according to claim 2, characterized in that, The cross-sectional dimension of the first end is larger than the cross-sectional dimension of the middle section, and the cross-sectional dimension of the second end is larger than the cross-sectional dimension of the middle section; or The groove is an arc-shaped groove as a whole.

4. The self-locking bracket according to claim 1, characterized in that, The groove also has a straight section portion, which is located between the first end and the second end and is connected to the first end and the second end. The cross-sectional dimension of the first end is larger than the cross-sectional dimension of the straight section portion, and the cross-sectional dimension of the second end is larger than the cross-sectional dimension of the straight section portion. The sidewall of the straight section portion forms the extrusion part. or The groove further includes an intermediate section, both the intermediate section and the first end being straight segments, and the second end being an enlarged portion. The cross-sectional dimension of the second end is larger than that of the intermediate section to form at least one protrusion at the transition between the second end and the intermediate section, the protrusion forming the extrusion portion; or The groove further includes an intermediate section, which and the first end are straight segments. The second end is offset relative to the first end, and at least one protrusion is formed at the transition between the second end and the intermediate section. The protrusion forms the extrusion portion.

5. The self-locking bracket according to claim 1, characterized in that, The second working wing is provided with a limiting groove, the rolling element part is located in the limiting groove, one end of the elastic column is located on the second working wing, and the free end of the elastic column protrudes from the top of the second working wing and extends into the groove; or The second working wing is provided with a limiting groove, the rolling element is located in the limiting groove, one end of the elastic column is located on the second working wing, and the free end of the elastic column does not protrude from the top of the second working wing and does not extend into the groove.

6. The self-locking bracket according to claim 1, characterized in that, A limiting groove is formed on the side wall of the elastic column, the rolling element is located within the limiting groove, one end of the elastic column is located on the second working wing, and the free end of the elastic column protrudes from the top of the second working wing and extends into the groove; or At least two limiting posts are protruding from the side wall of the elastic post and spaced apart along the sliding direction of the cover. The rolling element is located between the limiting posts. One end of the elastic post is located at the second working wing, and the free end of the elastic post protrudes from the top of the second working wing and extends into the groove.

7. The self-locking bracket according to claim 5 or 6, characterized in that, The elastic column is a solid column, a hollow column, a hollow column with an axially extending slit, or the free end of the elastic column has two mutually spaced elastic arms; and / or The rolling element is a ball, a solid roller, or a hollow roller.

8. The self-locking bracket according to claim 1, characterized in that, A limiting protrusion is formed on the second working wing. The rolling element is a ball or roller with a limiting hole. The rolling element passes through the limiting protrusion. One end of the elastic column is located on the second working wing. The free end of the elastic column protrudes from the top of the second working wing and extends into the groove.

9. The self-locking bracket according to claim 1, characterized in that, The free end of the elastic column has two elastic arms spaced apart from each other. The sidewall of the groove is recessed to form a pressing part. The rolling element is rotatably disposed in the pressing part. The two elastic arms extend into the groove and can move relative to the groove. The rolling element can press against one of the elastic arms to cause the elastic arm to flex.

10. The self-locking bracket according to claim 1, characterized in that, The elastic column is a solid column, a hollow column, or a hollow column with a slit extending along the axial direction. One side wall of the groove is recessed to form a compression portion, and the other opposite side wall of the groove is recessed to form a clearance portion. The compression portion corresponds to the clearance portion.

Images