A belt buckle

Abstract

This utility model discloses a buckle, relating to the technical field of footwear products. The buckle includes a base with a left clamping part and a right clamping part, and a left movable part and a right movable part connected to the base by a connector. Both the left and right movable parts are rotatable around the axis of the connector. The right end of the left movable part has a first spring piece, and the left end of the right movable part has a second spring piece. The first spring piece contacts the second spring piece, which is used to drive the left movable part to move closer to the left clamping part to clamp the strap located on the left side of the base, and the right movable part to move closer to the right clamping part to clamp the strap located on the right side of the base. When the strap needs to be extended or retracted, simply pinch the left and right movable parts to drive the left movable part away from the left clamping part and the right movable part away from the right clamping part to release the clamped strap. Using a clamping method instead of an inverted conical barbed structure to hold the strap can improve the problem of buckles damaging the strap and is suitable for straps of different materials.

Description

Technical Field

[0001] This utility model relates to the technical field of footwear products, and in particular to a buckle. Background Technology

[0002] A buckle is a device used to tighten or pull and adjust straps. It supports simultaneous adjustment, fixing, and release on both sides. This type of product simplifies the operation process, replacing the traditional method of manually tying a bow to secure the strap, making tying knots for shoes simple, convenient, efficient, and quick. It is especially helpful for young children, people with hand injuries, and others who have difficulty tying knots. However, some buckles use an inverted conical barb structure to hold the strap in place. This method can easily damage the strap, as the barb structure is prone to snagging and can only be used with relatively abrasion-resistant straps.

[0003] Therefore, how to improve the problem of buckle damage to belt strips in order to adapt to belt strips of different materials is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to provide a buckle that can improve the problem of buckles damaging belt strips, and is compatible with belt strips of different materials.

[0005] To achieve the above objectives, this utility model provides a buckle, including a base with a left clamping part and a right clamping part, and a left movable part and a right movable part connected to the base by a connector. Both the left movable part and the right movable part can rotate around the axis of the connector. The right end of the left movable part is provided with a first spring piece, and the left end of the right movable part is provided with a second spring piece. The first spring piece contacts the second spring piece, which is used to drive the left movable part to move closer to the left clamping part to clamp the strip located on the left side of the base, and the right movable part to move closer to the right clamping part to clamp the strip located on the right side of the base.

[0006] In one possible implementation, the right end of the left movable member is provided with a first connecting part, the left end of the right movable member is provided with a second connecting part, the base is provided with a first through hole, the second connecting part is provided with a second through hole, the first connecting part is provided with a third through hole, and the connector is fixed after passing through the first through hole, the second through hole and the third through hole.

[0007] In one possible implementation, the base further includes a base plate located between the left clamping portion and the right clamping portion, and a crossbar disposed above the base plate. The left end of the crossbar is used to restrict the left movable member from moving away from the left clamping portion, and the right end of the crossbar is used to restrict the right movable member from moving away from the right clamping portion. The base plate has a first protrusion and a second protrusion on the side facing the crossbar. The first protrusion is used to abut against the first connecting portion when the left movable member contacts the crossbar, and the second protrusion is used to abut against the second connecting portion when the right movable member contacts the crossbar. When both the left and right movable members are flipped to contact the crossbar, the first through hole, the second through hole and the third through hole are positioned by the cooperation of the first and second protrusions so that the connecting member can pass through.

[0008] In one possible implementation, the right end of the left movable member is provided with a first connecting portion, the left end of the right movable member is provided with a second connecting portion, the base is provided with a first through hole, the second connecting portion is provided with a second through hole, the axis of the first through hole and the axis of the second through hole are collinear, the connecting member is fixed to the first connecting portion, and the connecting member is provided with a first end and a second end that extend in the same direction. The first end is adapted to the first through hole to allow the left movable member to rotate around the axis of the first through hole, and the second end is adapted to the second through hole to allow the right movable member to rotate around the axis of the second through hole.

[0009] In one possible implementation, the first end is provided with a first guide slope, and the base is provided with a second guide slope. The first guide slope and the second guide slope are adapted to guide the movement of the first end toward the first through hole.

[0010] And / or, the second end is provided with a third guide slope, and the second connecting part is provided with a fourth guide slope. The third guide slope and the fourth guide slope are adapted to guide the movement of the second end toward the second through hole.

[0011] In one possible implementation, it also includes a replacement structural member and a decorative member, the replacement structural member having a mounting portion and a body portion connected to the mounting portion, the body portion being used to mount the decorative member;

[0012] The base is also equipped with a crossbar, which is used to limit the rotation of the left and right movable parts. The crossbar is equipped with mounting holes for the mounting part to pass through, so that the replacement structural parts and the crossbar are relatively fixed.

[0013] In one possible implementation, the crossbar is further provided with two elastic deformation slots spaced apart in the front-to-back direction. The two elastic deformation slots extend to the front inner wall and the rear inner wall of the mounting hole, respectively. The elastic deformation slots are used for the crossbar to deform in the left-to-right direction.

[0014] In one possible implementation, the mounting portion includes a snap-fit ​​portion connected to the body portion and a protrusion portion connected to the snap-fit ​​portion at one end away from the body portion. The protrusion portion is for passing through a mounting hole. The mounting portion is rotatable relative to the mounting hole so that the protrusion portion is at least partially located on the side of the crossbar away from the body portion, and the snap-fit ​​portion is located inside the mounting hole.

[0015] In one possible implementation, the inner walls of the left and right ends of the mounting hole are also provided with limiting grooves. The limiting grooves are fitted with the snap-fit ​​part by an interference fit, so that the mounting part and the crossbar are relatively fixed.

[0016] In one possible implementation, the crossbar has a concave arc surface located on the side of the crossbar facing the main body. The side of the main body facing the crossbar has a protrusion. The protrusion is used to abut against the concave arc surface when the snap-fit ​​part and the limiting groove are engaged, so as to drive the protrusion to abut against the side of the crossbar away from the main body.

[0017] Compared with the prior art, the technical solution provided by this utility model has at least the following beneficial effects:

[0018] Both the left and right movable parts can rotate relative to the base around the axis of the connector. The right end of the left movable part has a first spring, and the left end of the right movable part has a second spring that contacts the first spring. The force between the first and second springs drives the left movable part to rotate around the axis of the connector towards the left clamping part, and the right movable part to rotate around the axis of the connector towards the right clamping part, thus clamping the strips on the left and right sides of the base respectively. The clamped strips are fixed to prevent retraction. When strip extension or retraction is needed, simply pinch the left and right movable parts to move the left movable part away from the left clamping part and the right movable part away from the right clamping part to release the clamped strip. Using a clamping method instead of an inverted conical barb structure to hold the strip improves the problem of buckles damaging the strip and is suitable for strips of different materials. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the buckle structure provided in an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the buckle without the base installed, as provided in an embodiment of the present utility model.

[0022] Figure 3 This is a structural diagram of the buckle without the left movable part installed, provided in an embodiment of the present utility model;

[0023] Figure 4 This is a structural diagram of the buckle without the right movable part installed, provided in an embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the base provided in an embodiment of the present utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the left movable component provided in an embodiment of the present utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the right movable component provided in an embodiment of the present utility model;

[0027] Figure 8 This is a structural diagram of a buckle with a replacement structural component installed, provided in an embodiment of the present utility model.

[0028] Figure 9 This is a schematic diagram of the connection between the base and the replacement structural component provided in an embodiment of the present utility model;

[0029] Figure 10 A schematic diagram of the connection between the base and the replacement structural component provided in an embodiment of this utility model from another perspective;

[0030] Figure 11 This is a schematic diagram of the structure of the crossbar with mounting holes provided in an embodiment of the present utility model;

[0031] Figure 12 This is a structural schematic diagram of the replacement structural component provided in an embodiment of the present utility model;

[0032] Figure 13 This is a schematic diagram of the replacement structural component provided in an embodiment of the present utility model from another perspective.

[0033] Figure 14 This is a schematic diagram of the structure of the mounting part before it is inserted into the mounting hole and aligned, as provided in the embodiment of this utility model.

[0034] Figure 15 A schematic diagram of the structure of the mounting portion of the present utility model provided, showing the protrusion of the mounting part inserted into the mounting hole;

[0035] Figure 16 A schematic diagram of the structure of the mounting portion provided in this embodiment of the present invention after the protrusion passes through the mounting hole and rotates 90°;

[0036] Figure 17 This is a schematic diagram of the buckle structure provided in another embodiment of the present invention;

[0037] Figure 18 This is a structural diagram of the buckle without the base installed, according to another embodiment of the present invention;

[0038] Figure 19 This is a structural diagram of the buckle without the left movable part installed, according to another embodiment of the present invention;

[0039] Figure 20 This is a structural diagram of the buckle without the right movable part installed, according to another embodiment of the present invention;

[0040] Figure 21 This is a schematic diagram of the structure of the base provided in another embodiment of the present utility model;

[0041] Figure 22 This is a schematic diagram of the structure of the left movable member provided in another embodiment of the present invention;

[0042] Figure 23 This is a schematic diagram of the structure of the right movable member provided in another embodiment of the present invention.

[0043] in:

[0044] 100-Base, 110-Left clamping part, 111-First groove, 112-Second groove, 120-Right clamping part, 121-Fifth groove, 122-Sixth groove, 130-First through hole, 140-Base plate, 141-First protrusion, 142-Second protrusion, 150-Horizontal stop, 151-Mounting hole, 152-Elastic deformation joint, 153-Limiting groove, 154-Concave arc surface;

[0045] 200-Connector, 210-First end, 211-First guide ramp, 220-Second end, 221-Third guide ramp;

[0046] 300-Left movable part, 310-First spring piece, 320-First connecting part, 321-Third through hole, 330-Third groove, 340-Fourth groove;

[0047] 400-Right movable part, 410-Second spring piece, 420-Second connecting part, 421-Second through hole, 422-Fourth guide slope, 430-Seventh groove, 440-Eighth groove;

[0048] 500 - Replacement structural component, 510 - Mounting part, 511 - Snap-fit ​​part, 512 - Protrusion, 520 - Body part, 521 - Protrusion. Detailed Implementation

[0049] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0050] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0051] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model.

[0052] The purpose of this invention is to provide a buckle that can improve the problem of buckles damaging belt strips, and is compatible with belt strips of different materials.

[0053] Please see Figure 1 To achieve the above objectives, this utility model provides a buckle, including a base 100 with a left clamping portion 110 and a right clamping portion 120, and a left movable member 300 and a right movable member 400 connected to the base 100 via a connector 200. Both the left movable member 300 and the right movable member 400 are rotatable about the axis of the connector 200. The right end of the left movable member 300 is provided with a first spring piece 310. The left end of the right movable member 400 is provided with a second spring piece 410. The first spring piece 310 contacts the second spring piece 410, driving the left movable member 300 closer to the left clamping portion 110 to clamp the strip located on the left side of the base 100, and the right movable member 400 closer to the right clamping portion 120 to clamp the strip located on the right side of the base 100. The first spring 310 can be integrally injection molded with the left movable member 300 or set independently relative to the left movable member 300. The elastic force of the first spring 310 can drive the left movable member 300 to clamp the strip with the left clamping part 110. Similarly, the second spring 410 can be integrally injection molded with the right movable member 400 or set independently relative to the right movable member 400. The elastic force of the second spring 410 can drive the right movable member 400 to clamp the strip with the right clamping part 120.

[0054] Both the left movable member 300 and the right movable member 400 are rotatable relative to the base 100 about the axis of the connector 200. The right end of the left movable member 300 is provided with a first spring 310, and the left end of the right movable member 400 is provided with a second spring 410 that contacts the first spring 310. The force between the first spring 310 and the second spring 410 can drive the left movable member 300 to rotate about the axis of the connector 200 toward the left clamping part 110 and the right movable member 400 to rotate about the axis of the connector 200 toward the right clamping part 120, so as to clamp the strips on the left and right sides of the base 100 respectively. The clamped strips are fixed to limit the strip retraction. When the belt needs to be extended or retracted, simply pinch the left movable part 300 and the right movable part 400 to move the left movable part 300 away from the left clamping part 110 and the right movable part 400 away from the right clamping part 120 to release the clamped belt. This makes it more convenient for users, provides a better user experience, and allows for easy and quick one-handed operation. Using a clamping method instead of an inverted conical barbed structure to hold the belt in place improves the problem of buckles damaging the belt and is compatible with belts of different materials.

[0055] Please see Figure 2 and Figure 3 In this embodiment, the left clamping portion 110 is provided with a first groove 111 and a second groove 112 spaced apart. Both the first groove 111 and the second groove 112 penetrate the left clamping portion 110 in the vertical direction, and the second groove 112 is located to the right of the first groove 111. The left movable member 300 is provided with a third groove 330 and a fourth groove 340. Both the third groove 330 and the fourth groove 340 penetrate the left movable member 300 in the vertical direction, and the fourth groove 340 is located to the right of the third groove 330. In one application scenario, the buckle is used on shoes, and the strap is a shoelace. The shoelace passes upward through the first groove 111 and the third groove 330, then enters the fourth groove 340 to the right. It then exits between the left clamping part 110 and the left movable part 300, where it is clamped and limited. Alternatively, the shoelace can be bent further and passed upward through the second groove 112 and then downward through the first groove 111, resulting in a more aesthetically pleasing shoelace shape. The inner walls of the first groove 111, second groove 112, third groove 330, and fourth groove 340 are all provided with grooves to facilitate the passage of the shoelace end, improving the efficiency of shoelace threading.

[0056] Please see Figure 2 and Figure 4The right clamping part 120 is provided with a fifth groove 121 and a sixth groove 122 spaced apart from each other. Both the fifth groove 121 and the sixth groove 122 penetrate the right clamping part 120 in the vertical direction, and the sixth groove 122 is located to the right of the fifth groove 121. The right movable member 400 is provided with a seventh groove 430 and an eighth groove 440. Both the seventh groove 430 and the eighth groove 440 penetrate the right movable member 400 in the vertical direction, and the eighth groove 440 is located to the right of the seventh groove 430. In one application scenario, the buckle is used on shoes, and the strap is a shoelace. The shoelace passes upward through the fifth groove 121 and the seventh groove 430, then enters the eighth groove 440 to the right. It then exits between the right clamping part 120 and the right movable part 400, where it is clamped and limited. Alternatively, the shoelace can be bent further and passed upward through the sixth groove 122 and then downward through the fifth groove 121, resulting in a more aesthetically pleasing shoelace shape. The inner walls of the fifth groove 121, sixth groove 122, seventh groove 430, and eighth groove 440 also have grooves to facilitate the passage of the shoelace end, improving the efficiency of shoelace threading.

[0057] Please see Figure 5 , Figure 6 and Figure 7 In one possible implementation, the right end of the left movable member 300 is provided with a first connecting part 320, the left end of the right movable member 400 is provided with a second connecting part 420, the front and rear sides of the base 100 are provided with a first through hole 130, the second connecting part 420 is provided with a second through hole 421, the first connecting part 320 is provided with a third through hole 321, and the connector 200 is fixed after passing through the first through hole 130, the second through hole 421 and the third through hole 321. There are two first connecting parts 320 and two second connecting parts 420, and the first connecting parts 320 and the second connecting parts 420 are arranged in a cross pattern. The connector 200 passes through the first through hole 130 on either side of the base 100, and then passes through the third through hole 321 on the first connecting part 320 and the second through hole 421 on the second connecting part 420 in sequence. After passing through the first through hole 130 on the other side of the base 100, it is fixed. The connector 200 can be, but is not limited to, a pin, a shaft, a pin, etc., so that any one of the three components, the base 100, the left movable part 300, and the right movable part 400, can only rotate relative to the other two around the axis of the connector 200.

[0058] In one possible implementation, the base 100 further includes a base plate 140 located between the left clamping portion 110 and the right clamping portion 120, and a crossbar 150 disposed above the base plate 140. The left movable member 300 is inserted to the right between the base plate 140 and the crossbar 150, and the right movable member 400 is inserted to the left between the base plate 140 and the crossbar 150, for subsequent connection of the connecting member 200 to the base 100, the left movable member 300, and the right movable member 400. The crossbar 150 not only enhances the strength of the entire buckle, but also provides protection and aesthetics to the inside of the buckle, while also restricting the movement of the left movable member 300 and the right movable member 400. Specifically, when the left end of the left movable member 300 is raised to a certain angle, the left end of the crossbar 150 is used to restrict the left movable member 300 from moving away from the left clamping part 110, so as to prevent the left movable member 300 from moving excessively; when the right end of the right movable member 400 is raised to a certain angle, the right end of the crossbar 150 is used to restrict the right movable member 400 from moving away from the right clamping part 120, so as to prevent the left movable member 300 from moving excessively.

[0059] The base plate 140 has a first protrusion 141 and a second protrusion 142 on the side facing the crossbar 150. The first protrusion 141 abuts against the first connecting portion 320 when the left movable member 300 contacts the crossbar 150, and the second protrusion 142 abuts against the second connecting portion 420 when the right movable member 400 contacts the crossbar 150. When both the left movable member 300 and the right movable member 400 are rotated to contact the crossbar 150, the first through hole 130, the second through hole 421, and the third through hole 321 are aligned under the positioning of the first protrusion 141 and the second protrusion 142, allowing the connecting member 200 to pass through. Specifically, the first protrusion 141 has an arc surface adapted to the first connecting portion 320, and the second protrusion 142 has an arc surface adapted to the second connecting portion 420. After the left movable member 300 is horizontally inserted between the base plate 140 and the crossbar 150, the first connecting part 320 can be placed on the arc surface of the first protrusion 141 to position the first connecting part 320; after the right movable member 400 is horizontally inserted between the base plate 140 and the crossbar 150, the second connecting part 420 can be placed on the arc surface of the second protrusion 142 to position the second connecting part 420. After lifting the left end of the left movable part 300 and the right end of the right movable part 400 to abut against the crossbar 150, the force causes the first connecting part 320 to fit tightly against the arc surface of the first protrusion 141, and the second connecting part 420 to fit tightly against the arc surface of the second protrusion 142. This makes the third through hole 321 of the first connecting part 320, the second through hole 421 of the second connecting part 420, and the first through hole 130 of the base 100 concentric, facilitating the passage of the connecting part 200 and improving the efficiency of product assembly. In addition, the first protrusion 141 and the first connecting part 320 correspond one-to-one, and the second protrusion 142 and the second connecting part 420 correspond one-to-one. The first protrusion 141 and the second protrusion 142 are staggered (misaligned design) to ensure functionality while facilitating production demolding.

[0060] Please see Figures 17 to 21In one possible implementation, the right end of the left movable member 300 is provided with a first connecting portion 320, and the left end of the right movable member 400 is provided with a second connecting portion 420. The base 100 is provided with a first through hole 130, and the second connecting portion 420 is provided with a second through hole 421. The axis of the first through hole 130 and the axis of the second through hole 421 are collinear. The connector 200 is fixed to the first connecting portion 320. This connection method can be adhesive, threaded connection, etc., or it can be integrally injection molded so that the connector 200 and the first connecting portion 320 are an integral structure. The connector 200 is provided with a first end 210 and a second end 220 with collinear extension directions. The first end 210 is adapted to the first through hole 130. The left movable member 300 is horizontally inserted between the base plate 140 and the crossbar 150, and the first end 210 is inserted into the first through hole 130, so that the left movable member 300 can rotate around the axis of the first through hole 130. The second end 220 is adapted to the second through hole 421. The right movable member 400 is horizontally inserted between the base plate 140 and the crossbar 150, and the second end 220 enters the second through hole 421, so that the right movable member 400 can rotate around the axis of the second through hole 421. Similarly, the left movable member 300 and the right movable member 400 can rotate relative to the base 100 around the same axis.

[0061] Please see Figure 22 and Figure 23 The first end 210 is provided with a first guide slope 211, and the base 100 is provided with a second guide slope. The first guide slope 211 and the second guide slope are adapted to guide the movement of the first end 210 toward the first through hole 130, facilitating the assembly of the left movable part 300 to the base 100. Alternatively, the first guide slope 211 and the second guide slope can be set to be parallel to further improve assembly efficiency. The second end 220 is provided with a third guide slope 221, and the second connecting part 420 is provided with a fourth guide slope 422. The third guide slope 221 and the fourth guide slope 422 are adapted to guide the movement of the second end 220 toward the second through hole 421, facilitating the assembly of the right movable part 400 to the left movable part 300. Alternatively, the third guide slope 221 and the fourth guide slope 422 can be set to be parallel to further improve assembly efficiency.

[0062] Please see Figure 8 , Figure 9 and Figure 10In one possible implementation, the buckle further includes a replacement structural member 500 and a decorative member. The replacement structural member 500 is provided with a mounting part 510 and a body part 520 connected to the mounting part 510. The body part 520 is used to install the decorative member. The decorative member can be fixed to the body part 520 by means of adhesive bonding or the like. A groove structure can be opened on the opposite side of the decorative member and / or the body part 520 to increase the contact area with the adhesive and improve the bonding effect. The decorative member can be replaced as needed, and only needs to be re-adheded and fixed.

[0063] Please see Figure 11 The base 100 is also provided with a crossbar 150, which limits the rotation of the left movable member 300 and the right movable member 400. The crossbar 150 is provided with a mounting hole 151, which is used for the mounting part 510 to pass through, so that the replacement structural member 500 and the crossbar 150 are relatively fixed. The crossbar 150 is also provided with two elastic deformation slots 152 that are spaced apart in the front-rear direction. The two elastic deformation slots 152 extend to the front inner wall and the rear inner wall of the mounting hole 151, respectively. The elastic deformation slots 152 are used to deform the crossbar 150 in the left-right direction during the process of the mounting part 510 passing through the mounting hole 151, so as to enlarge the size of the mounting hole 151 and facilitate the insertion of the mounting part 510.

[0064] Please see Figures 12 to 16 In one possible implementation, the mounting portion 510 includes a snap-fit ​​portion 511 connected to the body portion 520 and a protrusion 512 connected to the end of the snap-fit ​​portion 511 facing away from the body portion 520. The cross-sectional dimension of the protrusion 512 is larger than that of the snap-fit ​​portion 511, and the outline shape of the mounting hole 151 is the same as or similar to that of the protrusion 512, making it easy for the protrusion 512 to pass through the mounting hole 151 and allowing the snap-fit ​​portion 511 to be located within the mounting hole 151, thus enabling the mounting portion 510 to be mounted. The hole 151 is elliptical in shape, and the elastic deformation slot 152 is located in the direction of the major axis of the ellipse. After the protrusion 512 passes through the mounting hole 151, the mounting part 510 is rotated 90° relative to the mounting hole 151 so that the two ends of the mounting part 510 on its own major axis are located in the direction of the minor axis of the mounting hole 151, so that the protrusion 512 is at least partially located on the side of the crossbar 150 away from the body part 520, which is used to limit the mounting part 510 from disengaging in the opposite direction in the direction of insertion into the mounting hole 151.

[0065] Furthermore, the snap-fit ​​part 511 can also be configured as an elliptical structure. The inner walls of the left and right ends of the mounting hole 151 are also provided with limiting grooves 153. That is, the two limiting grooves 153 are located in the short axis direction of the mounting hole 151. When the mounting part 510 rotates 90° relative to the mounting hole 151, the two ends of the snap-fit ​​part 511 in the long axis direction enter the limiting grooves 153 respectively. The limiting grooves 153 and the snap-fit ​​part 511 are fitted by an interference fit. The force generated by the elastic deformation joint 152 is used to lock the snap-fit ​​part 510 and the crossbar 150, so that the mounting part 510 and the crossbar 150 are relatively fixed. The crossbar 150 has a concave arc surface 154 located on the side of the crossbar 150 facing the main body 520. The main body 520 has a protrusion 521 on the side facing the crossbar 150, located along the long axis of the locking part 511. The protrusion 521 abuts against the concave arc surface 154 when the locking part 511 and the limiting groove 153 are engaged, creating pressure to drive the protrusion 512 upwards to abut against the side of the crossbar 150 away from the main body 520, forming a multi-locking mechanism. When the replacement structural component 500 needs to be replaced or disassembled, simply rotate the mounting part 510 in the reverse direction and pull it upwards; disassembly is easy.

[0066] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0067] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0068] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A buckle, characterized in that, The device includes a base (100) with a left clamping part (110) and a right clamping part (120), and a left movable part (300) and a right movable part (400) connected to the base (100) by a connector (200). The left movable part (300) and the right movable part (400) are both rotatable about the axis of the connector (200). The right end of the left movable part (300) is provided with a first spring (310), and the left end of the right movable part (400) is provided with a second spring (410). The first spring (310) contacts the second spring (410) to drive the left movable part (300) to approach the left clamping part (110) to clamp the strip located on the left side of the base (100), and the right movable part (400) to approach the right clamping part (120) to clamp the strip located on the right side of the base (100).

2. The buckle according to claim 1, characterized in that, The right end of the left movable member (300) is provided with a first connecting part (320), the left end of the right movable member (400) is provided with a second connecting part (420), the base (100) is provided with a first through hole (130), the second connecting part (420) is provided with a second through hole (421), the first connecting part (320) is provided with a third through hole (321), and the connector (200) is fixed after passing through the first through hole (130), the second through hole (421) and the third through hole (321).

3. The buckle according to claim 2, characterized in that, The base (100) further includes a base plate (140) located between the left clamping portion (110) and the right clamping portion (120), and a crossbar (150) disposed above the base plate (140). The left end of the crossbar (150) is used to restrict the left movable member (300) from moving away from the left clamping portion (110), and the right end of the crossbar (150) is used to restrict the right movable member (400) from moving away from the right clamping portion (120). The base plate (140) has a first protrusion (141) and a second protrusion (142) on the side facing the crossbar (150). The first protrusion (141) is used for... When the left movable member (300) contacts the crossbar (150), it abuts against the first connecting portion (320). The second protrusion (142) abuts against the second connecting portion (420) when the right movable member (400) contacts the crossbar (150). When both the left movable member (300) and the right movable member (400) are flipped to contact the crossbar (150), the first through hole (130), the second through hole (421) and the third through hole (321) are positioned in cooperation with the first protrusion (141) and the second protrusion (142) so that the connecting member (200) can pass through.

4. The buckle according to claim 1, characterized in that, The right end of the left movable member (300) is provided with a first connecting part (320), and the left end of the right movable member (400) is provided with a second connecting part (420). The base (100) is provided with a first through hole (130), and the second connecting part (420) is provided with a second through hole (421). The axis of the first through hole (130) and the axis of the second through hole (421) are collinear. The connector (200) is fixed to the first connecting part (320), and the connector (200) is provided with a first end (210) and a second end (220) with collinear extension directions. The first end (210) is adapted to the first through hole (130) to allow the left movable member (300) to rotate around the axis of the first through hole (130), and the second end (220) is adapted to the second through hole (421) to allow the right movable member (400) to rotate around the axis of the second through hole (421).

5. The buckle according to claim 4, characterized in that, The first end (210) is provided with a first guide slope (211), and the base (100) is provided with a second guide slope. The first guide slope (211) is adapted to the second guide slope and is used to guide the movement of the first end (210) toward the first through hole (130). And / or, the second end (220) is provided with a third guide slope (221), and the second connecting part (420) is provided with a fourth guide slope (422). The third guide slope (221) and the fourth guide slope (422) are adapted to guide the movement of the second end (220) toward the second through hole (421).

6. The buckle according to claim 1, characterized in that, It also includes a replacement structural component (500) and a decorative component, wherein the replacement structural component (500) is provided with a mounting portion (510) and a body portion (520) connected to the mounting portion (510), and the body portion (520) is used to mount the decorative component; The base (100) is also provided with a crossbar (150), which is used to limit the rotation of the left movable part (300) and the right movable part (400). The crossbar (150) is provided with a mounting hole (151), which is used for the mounting part (510) to pass through, so that the replacement structural part (500) and the crossbar (150) are relatively fixed.

7. The buckle according to claim 6, characterized in that, The crossbar (150) is also provided with two elastic deformation slots (152) spaced apart in the front-to-back direction. The two elastic deformation slots (152) extend to the front inner wall and the rear inner wall of the mounting hole (151) respectively. The elastic deformation slots (152) are used for the crossbar (150) to deform in the left-to-right direction.

8. The buckle according to claim 6, characterized in that, The mounting portion (510) includes a snap-fit ​​portion (511) connected to the body portion (520) and a protrusion portion (512) connected to the snap-fit ​​portion (511) away from the body portion (520). The protrusion portion (512) is for passing through the mounting hole (151). The mounting portion (510) is rotatable relative to the mounting hole (151) so that the protrusion portion (512) is at least partially located on the side of the crossbar (150) away from the body portion (520), and the snap-fit ​​portion (511) is located in the mounting hole (151).

9. The buckle according to claim 8, characterized in that, The left and right inner walls of the mounting hole (151) are also provided with limiting grooves (153). The limiting grooves (153) and the snap-fit ​​part (511) are in an interference fit so that the mounting part (510) and the crossbar (150) are relatively fixed.

10. The buckle according to claim 9, characterized in that, The crossbar (150) is provided with a concave arc surface (154), which is located on the side of the crossbar (150) facing the main body (520). The main body (520) is provided with a protrusion (521) on the side of the crossbar (150) facing the crossbar (150). The protrusion (521) is used to abut against the concave arc surface (154) when the snap-fit ​​part (511) and the limiting groove (153) are connected, so as to drive the protrusion (512) to abut against the side of the crossbar (150) away from the main body (520).

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