catch

Abstract

The present invention relates to a buckle comprising a first connecting member including a locking shoulder formed at one end of the first base, and a second connecting member including a locking protrusion combined with the locking shoulder of the first connecting member, a pair of elastic pieces integrally formed at the plate in a manner to elastically support the locking protrusion, and a pulling mechanism connected with the elastic pieces, the first connecting member and the second connecting member being elastically fastened by the locking shoulder and the locking protrusion, and being separated by pulling the pulling mechanism, the elastic pieces being rotated to the rear to release the locking protrusion from the locking shoulder.

Description

Technical Field

[0001] This invention relates to buckles, specifically buckles consisting of two connecting parts installed at the end of a belt or strap attached to an item such as a bag or backpack. These parts are designed to be detachably joined together, making them suitable even for wide belts or straps. They maintain a secure assembly while being easy to operate and thin, resulting in a very seamless appearance. Background Technology

[0002] Typically, buckles are elastically joined by combining two integrally molded plastic parts, and are widely used in various items such as clothing or backpacks as fasteners to facilitate the connection of belts or straps.

[0003] Korean Patent No. 10-1140438 (April 19, 2012) (Patent Document 1) shows an example of a conventional snap-fit. Referring to this document, the snap-fit ​​is basically composed of a plug member 100 and a socket member 200. When the snap-fit ​​is engaged, the plug member 100 is inserted through the cavity 205 of the socket member 200 to elastically fasten a pair of locking arms 105 within the cavity 205 of the socket member 200. When the snap-fit ​​is disengaged, pressure is applied from both sides towards the locking arms 105 embedded in the socket member 200 to pull the plug member 100 outward, thereby separating them.

[0004] However, the buckle in Patent Document 1 is mainly used in objects with narrow straps s1 and s2. If it is to be applied to wide straps used in life jackets or hunting vests, it has the disadvantage of being very bulky.

[0005] Furthermore, most conventional snap-fit ​​devices, such as those in Patent Document 1, require both hands to hold the plug and socket components and interlock them to complete the connection. The same applies to separation; both hands must be used to grasp the plug and socket components respectively and press the locking arm of the plug component to separate them. Thus, conventional snap-fit ​​devices require both hands for accurate operation during separation, which makes them unsuitable for situations requiring simple and quick separation, such as when personnel wearing life jackets or bulletproof vests are in critical situations, have difficulty using their hands due to injury, or need to quickly remove them.

[0006] Furthermore, for military or field operation belts or straps, when other components are installed on the belts or straps, ordinary buckles may not be able to withstand the weight or strength, thus requiring stronger fastening tools.

[0007] The buckle in Korean Patent No. 10-2177493 (November 5, 2020) (Patent Document 2) was developed to solve the above problems. It provides the advantage of being able to connect to a wide strap, allowing for easy separation with one hand, and achieving a secure connection.

[0008] However, the buckle in Patent Document 2 is joined by overlapping the first connecting member 100 and the second connecting member 200, resulting in a relatively thick joint and a significant outward protrusion. This drawback is particularly problematic when applied to backpacks or clothing with external straps, as it easily comes into contact with external objects and can hinder various activities or tasks.

[0009] Furthermore, when the buckle in Patent Document 2 is used to connect the first connecting part and the second connecting part, it needs to be pushed back in a right-angle direction after insertion in order to connect them, which is inconvenient to operate.

[0010] Therefore, there is a need for snaps that can be securely connected and disconnected with simple operation and can be made thinner. Summary of the Invention

[0011] The purpose of this invention is to provide a buckle that not only enables a secure connection of the strap, but also allows for easy assembly and disassembly.

[0012] The purpose of this invention is to provide a snap fastener that can be separated using only one hand.

[0013] The purpose of this invention is to provide a buckle that is applicable not only to narrow straps but also to wide straps.

[0014] The purpose of this invention is to provide a buckle that can be used to connect multiple straps simultaneously.

[0015] The purpose of this invention is to provide a buckle that enables various applications of the strap, allows for a thinner overall thickness when combined, and provides greater convenience and security in use.

[0016] The technical problem to be solved by the present invention is not limited to the content described above.

[0017] As a technical solution to address the aforementioned technical problems, the buckle in this embodiment of the invention includes: a first connecting member comprising a first base, a pair of brackets extending forward from the first base and spaced apart from each other, a connecting rod connecting the front ends of the brackets, a first channel formed behind the first base to connect a first strap, a receiving portion formed between the first base and the connecting rod, and a locking shoulder formed at one end of the first base; and a second connecting member comprising a second base, a plate extending forward from the second base, and a buckle protruding downward from the front end of the plate to insert a... The device comprises a connecting portion of the receiving portion, a locking protrusion formed on the front surface of the connecting portion to engage with the locking shoulder of the first connecting member, a pair of elastic plates integrally formed on the plate to elastically support the locking protrusion, a pull mechanism connected to the elastic plates, and a second channel formed behind the second base to connect the second strap. The first connecting member and the second connecting member are elastically fastened by the locking shoulder and the locking protrusion. By pulling the pull mechanism, the elastic plates rotate rearward, causing the locking protrusion to disengage from the locking shoulder and separate.

[0018] An inclined guide surface is formed at the first base, which connects to the locking shoulder. When engaged with the second connecting member, the locking protrusion can contact the inclined guide surface and be elastically compressed into place.

[0019] The connecting rod of the first connecting member is separated from the first base, and the receiving portion is formed therebetween. A guide piece that protrudes forward and upward is formed in the middle of the connecting rod. A guide groove for inserting the guide piece is formed in the plate of the second connecting member. When the first connecting member and the second connecting member are combined, the combination can be induced by guiding the guide piece into the guide groove.

[0020] The end of the guide piece is bent forward, and the guide groove of the second connecting member is formed in a recessed form on the upper surface of the second base, which can be tightly engaged with the end of the guide piece.

[0021] A placement groove is formed between the joint of the second connecting member and the second base to accommodate the connecting rod. A groove is formed on the connecting rod, and a protrusion corresponding to the groove is formed on the bottom surface of the placement groove. When engaged, the protrusion can be tightly engaged in the groove to prevent lateral movement.

[0022] The two ends of the pair of elastic sheets form connecting portions to connect with the plate, and are integrally formed with the plate. The elastic grooves of the elastic sheets are formed in a manner that perpendicularly penetrates the plate. The elastic sheets can elastically rotate backward with the connecting portions as the center.

[0023] The bracket of the first connecting component and the upper surface of the connecting rod form a stepped curved surface, and the bottom surface of the placement groove of the second connecting component is formed as a curved surface corresponding to the stepped curved surface. When they are joined, they can fit tightly together to maintain a firm joint.

[0024] Auxiliary supports may also be formed on both sides of the bracket of the first connecting member. The rear portion of the first base can extend to both sides with the same length as the auxiliary supports to form the first channel. The plate of the second connecting member can extend to both sides of the joint with the same length as the auxiliary supports. The rear portion of the second base can extend to both sides with the same length as the auxiliary supports to form the second channel.

[0025] A through hole is formed between the support and the auxiliary support, and a protrusion corresponding to the through hole is formed on the bottom surface of the plate. When assembled, the through hole and the protrusion can close together to form a tight fit.

[0026] Multiple auxiliary supports may be formed on both sides of the bracket of the first connecting member. The connecting rod extends outward to connect with the auxiliary supports. Multiple guide pieces can be formed on the connecting rod at predetermined intervals. The plate of the second connecting member can extend outward to both sides of the joint with the same length as the auxiliary supports. The guide grooves that can be combined with the guide pieces are formed in a number corresponding to the number of guide pieces.

[0027] The elastic sheet has an annular hole, and the pulling mechanism, which can be selected from ropes, cords, and rings, can pass through the annular hole to pull the elastic sheet.

[0028] The first connecting component and the second connecting component can each form multiple channels to simultaneously connect multiple tapes.

[0029] Ribs or grooves may be formed on the upper or lower surface of the plate of the second connecting component.

[0030] A snap-fitting method according to another embodiment of the present invention includes: step (a) inserting a guide piece of a connecting rod formed on a first connecting member into a guide groove of a second connecting member; step (b) as the guide piece is guided by the guide groove, causing the connecting portion of the second connecting member to move relative to the first connecting member and enter the receiving portion of the first connecting member; step (c) applying pressure to cause the locking protrusion of the connecting portion and the elastic piece to elastically deform rearward along the inclined guide surface of the first connecting member; and step (d) as the locking protrusion disengages from the inclined guide surface, it elastically engages with the locking shoulder of the first connecting member to complete the fastening.

[0031] Step (b) may further include the following steps: while the joint enters the receiving part, the placement groove of the second connecting member corresponds to the curved surface of the connecting rod and the bracket of the first connecting member, and the protrusion of the placement groove cooperates with the groove of the connecting rod to suppress lateral shaking.

[0032] Step (a) may further include the following steps: aligning the curved end of the guide piece to fit closely with the shape of the recess on the upper surface of the second base of the second connecting member, so that the first connecting member and the second connecting member naturally form a connecting shaft as they rotate.

[0033] The present invention may further include the following steps: inserting one or more straps into the first channel of the first connecting component and the second channel of the second connecting component for fixation, wherein the number of channels is two or more, and multiple straps can be connected simultaneously.

[0034] Another embodiment of the present invention includes a method for releasing a latch, comprising: step (a) pulling a pull cord connected to an elastic piece of the second connecting member in a rearward direction while the first connecting member and the second connecting member are engaged, thereby causing the elastic piece to rotate rearward; step (b) releasing the engagement between the locking protrusion of the second connecting member and the locking shoulder of the first connecting member by rotating the elastic piece; and step (c) rotating or linearly moving the second connecting member with the guide plate of the first connecting member and the guide groove of the second connecting member as the center, thereby causing the engagement portion of the second connecting member to disengage from the receiving portion of the first connecting member.

[0035] Step (a) can be performed by pulling the rope with one hand, and step (c) can be performed automatically depending on whether the pulling force is maintained or released.

[0036] The present invention may further include the following steps: after the separation of the first connecting component and the second connecting component is completed, they move relative to each other in such a way that the protrusion on the bottom surface of the second connecting component disengages from the through hole of the first connecting component.

[0037] Through this invention, the first connecting component and the second connecting component can be firmly joined in an elastic manner, and can be easily separated by pulling a rope with one hand.

[0038] With this invention, the first connecting component and the second connecting component are configured to spread out to both sides, which is applicable not only to narrow strips but also to wide strips, and multiple strips can be connected at the same time for use, thereby realizing a variety of applications for the strip.

[0039] With this invention, the first connecting component and the second connecting component are tightly joined by a concave-convex fit, rather than being stacked. Therefore, a thinner overall thickness of the joint can be formed, making it more convenient and safer to use.

[0040] The effects that can be obtained from this invention are not limited to those described above. Those skilled in the art to which this invention pertains will clearly understand other effects not mentioned in the following description. Attached Figure Description

[0041] Figures 1 to 9 The buckle relating to the first embodiment of the present invention:

[0042] Figure 1 This is a 3D view of the buckle and a 3D view of its assembly.

[0043] Figure 2 This is a 3D view showing the separation of the clips.

[0044] Figure 3 Parts (a) and (b) are top views of each connecting component.

[0045] Figure 4 Parts (a), (b), and (c) are Figure 3 Sectional views of lines AA and BB, and combined sectional views.

[0046] Figure 5 To demonstrate the implementation Figure 4 The diagram showing the sequence of the CC line cross-section of part (c).

[0047] Figure 6 Parts (a) and (b) are a three-dimensional view of the combined strip and a bottom three-dimensional view.

[0048] Figure 7 To demonstrate the implementation Figure 4 A diagram showing the separation sequence of the CC line profile in part (c).

[0049] Figure 8 A perspective view showing the sequence of snap-lock separation.

[0050] Figure 9 Parts (a) and (b) are top views showing the function of the elastic tab when the snap is released.

[0051] Figures 10 to 13 The buckle relating to the second embodiment of the present invention:

[0052] Figure 10 This is a 3D view of the buckle and a 3D view of its assembly.

[0053] Figure 11Parts (a) and (b) are top views of each connecting component.

[0054] Figure 12 Parts (a), (b), and (c) are Figure 11 Sectional views of the DD line and EE line, and combined sectional views.

[0055] Figure 13 This is a perspective view showing the separation achieved when the buckle and strap are engaged.

[0056] Figures 14 to 17 The buckle relating to the third embodiment of the present invention:

[0057] Figure 14 This is a 3D view of the buckle and a 3D view of its assembly.

[0058] Figure 15 Parts (a) and (b) are top views of each connecting component.

[0059] Figure 16 Parts (a), (b), (c), and (d) are Figure 15 Sectional views and combined sectional views of the FF line, GG line and HH line.

[0060] Figure 17 This is a perspective view showing the separation achieved when the buckle and strap are engaged.

[0061] Figure 18 This is a top view of the buckle used for comparing the first to third embodiments.

[0062] Figure 19 This is a diagram illustrating the usage state of the buckle in an embodiment of the present invention. Detailed Implementation

[0063] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. In this process, for ease of explanation, the thickness of the lines or the size of the structural elements shown in the drawings may be exaggerated.

[0064] Furthermore, the terms used below are defined with consideration of the functions described in this specification and may vary depending on the intentions or practices of the user or operator. Therefore, these terms should be defined based on the entire contents of this specification.

[0065] The embodiments described below can also be implemented in many different forms. To more clearly illustrate the features of the embodiments, detailed descriptions of matters well known to those skilled in the art to which the following embodiments pertain will be omitted.

[0066] Throughout the instruction manual, when a structure is mentioned as being "connected" to other structures, it refers not only to the case of "direct connection" but also to the case of "intermediate connection by other structures".

[0067] The terms "upper side," "upper part," and "upper" not only refer to situations where the object is in direct contact with the upper surface, but also to situations where it is located on the upper surface without contact.

[0068] Furthermore, when it is mentioned that a structure "includes" another structure, unless there is a specific contrary statement, it means that other structures may also be included, rather than excluding other structures.

[0069] Figures 1 to 10 The first embodiment of the buckle of the present invention is disclosed.

[0070] Figure 1 This is a 3D view of the buckle and a 3D view of its assembly. Figure 2 This is a 3D view showing the separation of the clips. Figure 3 Parts (a) and (b) are top views of each connecting component, respectively. Figure 4 Parts (a), (b), and (c) are Figure 3 Sectional views of lines AA and BB, and combined sectional views. Figure 5 To demonstrate the implementation Figure 4 Referring to the figures showing the sequence of the CC-line cross-sections, the snap-fit ​​B1 of the first embodiment includes a first connecting member 100 and a second connecting member 200 that are detachable from each other.

[0071] In the first connecting member 100, a pair of spaced-apart supports 110 extend forward from the first base 101, and the front ends of the pair of supports 110 are connected by a connecting rod 130.

[0072] A first channel 150 capable of connecting a tape is formed behind the first base 101.

[0073] The bracket 110 is disposed on the lower side of the first base 101, such that the surface forming the first base 101 is shaped to extend upward compared to the bracket 110.

[0074] A locking shoulder 103 is formed at one end of the first base 101. The locking shoulder 103 may be formed in the middle of the lower side of the first base 101, and an inclined guide surface 102 may be formed on the upper side of the locking shoulder 103.

[0075] The inclined guide surface 102 is an inclined surface that extends from the upper end of the first base 101 to the locking shoulder 103. When connected to the second connecting member 200 described later, the locking protrusion is elastically compressed upon contact with the inclined guide surface 102 to induce entry.

[0076] The inclined guide surface 102 can be formed by a planar inclined surface, or it can be formed by an inclined surface that forms a convex surface.

[0077] The connecting rod 130 is separated from the first base 101, forming a space for the receiving part 120.

[0078] A guide plate 140 protrudes forward from the middle of the connecting rod 130. The guide plate 140 extends obliquely forward and upward, and its end bends forward again. One or more grooves 131 are formed on the upper surface of the connecting rod 130.

[0079] In the second connecting member 200, a plate 210 extends forward from the second base 201, and a second channel 250 for connecting a strap is formed behind the second base 201.

[0080] Plate 210 extends from the upper end of the second base 201. Plate 210 is connected to the upper side of the bracket 110 and the connecting rod 130 of the first connecting member 100 by stacking. Thus, the bracket 110 and the connecting rod 130 are formed from the lower side of the first base 101, and plate 210 is formed from the upper side of the second base 201, thereby giving a sense of unity when they are joined.

[0081] A guide groove 240 is formed between the inner side of the plate 210 and the second base 201 for the guide piece 140 of the first connecting member 100 to be inserted.

[0082] The guide groove 240 is formed such that it is recessed in the middle of the upper side of the second base 201 at the rear of the through plate 210.

[0083] like Figure 5 As shown in the cross-sectional view, in order to fit snugly against the guide piece 140 when combined with the first connecting member 100, preferably, the upper surface of the second base 201 forming the guide groove 240 is shaped to correspond to the shape of the bottom surface of the front end of the guide piece 140.

[0084] The front end of plate 210 extends downward to form a connecting portion 220 that is inserted into the receiving portion 120 of the first connecting member 100. In the figure, the connecting portion 220 is configured to extend downward from the front surface and the side surface, but the shape of the connecting portion 220 can be set to match the shape of the receiving portion 120.

[0085] As the connecting portion 220 extends downward, a placement groove 230 can be formed on the inner side of the connecting portion 220 between it and the second base 201. The placement groove 230 is introduced and places the connecting rod 130 when it is engaged with the first connecting member 100.

[0086] In the placement groove 230, a protrusion 231 is formed on the bottom surface of the plate 210, corresponding to the groove 131 formed on the connecting rod 130. Thus, when the snap-fit ​​is engaged, the protrusion 231 is tightly engaged in the groove 131, thereby preventing lateral movement.

[0087] Figure 4 Part (a) is Figure 3 The AA-line sectional view shows a cross-section of the connecting rod 130 portion of the first connecting member 100. Figure 4 Part (b) is Figure 3 The BB-line sectional view shows a cross-section of the placement groove 230 portion of the second connecting member 200. Figure 4 Part (c) shows the state when the first connecting member 100 and the second connecting member 200 are engaged.

[0088] like Figure 4 As shown, the upper surfaces of the connecting rod 130 and the bracket 110 form a stepped curved surface by including a groove 131, and the bottom surface of the placement groove 230 forms a curved surface corresponding to the upper surfaces of the connecting rod 130 and the bracket 110 by including a protrusion 231 corresponding to the groove 131, so that a tight and non-wobbly joint is formed when they are joined together.

[0089] As a connection mechanism between the first connecting member 100 and the second connecting member 200, a pair of elastic pieces 211 are formed in the middle of the front end of the plate 210, and a locking protrusion 221 is formed to engage with the locking shoulder 103 of the first connecting member 100 by working together with the elastic pieces 211 to provide elasticity.

[0090] For this purpose, an elastic groove 212 is formed vertically through the plate 210 to divide the elastic sheet 211. The two ends of the elastic groove 212 are close to the front end of the plate 210, and the middle part is formed to extend into the inside of the plate 210. The middle part extends forward to form a pair of elastic sheets 211 facing each other at the middle front end of the plate 210.

[0091] That is, a pair of elastic sheets 211 are formed with thin connecting portions 213 at both ends to connect with the plate 210, and the middle portion is formed to be separated from each other in a facing manner. Thus, each elastic sheet 211 is configured to be elastically biased backward with the connecting portion 213 as the center.

[0092] Thus, the elastic sheet 211 forms part of the joint 220, and the plate 210, the joint 220, and the elastic sheet 211 are all integrally formed.

[0093] Annular holes 214 are formed vertically in each elastic piece 211, through which a pull rope 215, formed of a rope, cord, or ring, is inserted. The pull rope 215 is used as a mechanism for releasing the buckle.

[0094] A locking protrusion 221 is formed at the lower end of the front surface of the elastic piece 211, which corresponds to the middle lower end of the connecting portion 220. When the locking protrusion 221 contacts the first connecting member 100, it substantially completes the snap-fit ​​engagement by engaging with the locking shoulder 103.

[0095] Ribs, curved surfaces, or grooves of arbitrary shapes are formed on the side surface, bottom surface, or upper surface of plate 210 of the first connecting component 100 and the second connecting component 200, thereby effectively improving the overall strength of the product.

[0096] Figure 5 The states of engagement of buckle B1 are shown in sequence, for reference. Figure 5 When the first connecting member 100 and the second connecting member 200 are combined, the guide piece 140 of the first connecting member 100 is first introduced into the guide groove 240 formed inside the placement groove 230 of the second connecting member 200.

[0097] When the front end of the guide piece 140 enters the guide groove 240, the bent front end of the guide piece 140 is contacted and induced by the inclined surface of the upper end of the second base 201 forming the guide groove 240, causing each connecting part 100, 200 to rotate naturally, thereby causing the joint 220 to enter the receiving part 120 side.

[0098] As the connecting portion 220 enters the receiving portion 120, the lower front end of the locking protrusion 221 contacts the inclined guide surface 102 of the first base 101 and is pushed backward. In order to ensure smooth contact between the lower end of the locking protrusion 221 and the inclined guide surface 102, a bevel or barb may be used at the lower end of the locking protrusion 221.

[0099] As the elastic plate 211 and the locking protrusion 221 are compressed backward and continue to enter, at the moment when the engagement part 220 has entered completely, the locking protrusion 221 disengages from the inclined guide surface 102 and elastically protrudes to engage with the locking shoulder 103, thereby completing the engagement of the buckle B1.

[0100] In such a combined state, such as Figure 4 As shown in the sectional view of part (c), a firm connection can be maintained by bending the upper surface of the bracket 110 and the connecting rod 130 and bending the bottom surface of the placement groove 230.

[0101] Figure 6 Parts (a) and (b) are a three-dimensional view and a bottom three-dimensional view of the combined state with the band, as shown in the figure. Figure 6As shown in parts (a) and (b), a first strap S1 is connected to the first channel 150 of the first connecting member 100, and a second strap S2 is connected to the second channel 250 of the second connecting member 200. A pull rope 215 is inserted through the annular hole 214 of a pair of elastic sheets 211 to form a loop.

[0102] Figure 7 To demonstrate the implementation Figure 4 (c) A diagram showing the separation sequence of the CC line profile in part. Figure 8 This is a perspective view illustrating the sequence of snap-lock separation. Referring to the above figures, with the first connecting member 100 and the second connecting member 200 engaged, the engagement between the locking protrusion 221 and the locking shoulder 103 is released by pulling the pull cord 215 backward, thereby separating the snap-lock B1.

[0103] When the pull cord 215 is pulled, as the locking protrusion 221 separates from the locking shoulder 103, the second connecting member 200 rotates around the front end of the guide plate 140, causing the connecting part 220 to disengage from the receiving part 120, thereby causing the buckle to separate naturally.

[0104] Figure 9 This shows the working state when the pull rope 215 is pulled. Figure 9 Part (a) is a top view of the buckle in its engaged state, and part (b) is a top view showing the function of the elastic plate when the pull cord is pulled.

[0105] When the pull cord 215 is pulled backward, the pair of elastic plates 211 rotate backward about the connecting part 213. In this case, the locking protrusion 221 on the front surface is released from the locking shoulder 103. By continuing to pull the pull cord 215, the latch is released as the connecting part 220 disengages from the receiving part 120. The rotation width of the elastic plate 211 is limited to the width of the elastic groove 212.

[0106] Figures 10 to 13 The snap-fit ​​B2 is shown according to a second embodiment of the present invention.

[0107] Figure 10 This is a 3D view of the buckle and a 3D view of its assembly. Figure 11 Parts (a) and (b) are top views of each connecting component, respectively. Figure 12 Parts (a), (b), and (c) are Figure 11 Sectional views of DD line and EE line, and combined sectional views. Figure 13 This is a perspective view showing the separation achieved when the buckle and strap are engaged.

[0108] The latch B2 of the second embodiment can substantially include the structure of the latch B1 of the first embodiment. Therefore, detailed descriptions of structures that are repeated in the first embodiment will be omitted. Furthermore, the same reference numerals will be used for the same parts that are repeated in the first embodiment.

[0109] The first connecting member 100 is spaced forward from the first base 101 to form a pair of brackets 110. The front end of the bracket 110 is connected by a connecting rod 130. A receiving portion 120 is formed on the inner side of the connecting rod 130. A guide piece 140 and a groove 131 are formed on the connecting rod 130. A first channel 150 for connecting a strap is formed behind the first base 101. These basic structures are the same as those in the first embodiment.

[0110] In addition, auxiliary supports 110a are formed on both sides of the support 110 of the first connecting member 100, and the rear part of the first base 101 also extends further to both sides to form a longer first channel 150, so that a wider band can be connected.

[0111] The support 110 and the auxiliary support 110a can be arranged in a planar pattern, or as shown in the attached figure, they can be formed into a rod shape and connected therebetween by an extending connecting rod 130. Furthermore, a through hole 111 can be formed between the support 110 and the auxiliary support 110a.

[0112] The second connecting member 200 extends forward of the second base 201 to form a plate 210. A connecting portion 220, an elastic sheet 211, and a locking protrusion 221 are formed at the front end of the plate 210. A guide groove 240 is formed on the inner side of the plate 210, and a placement groove 230 is formed on the lower side of the plate 210. A protrusion 231 corresponding to the groove 131 is formed in the placement groove 230. A second channel 250 for connecting a strap is formed behind the second base 201. These structures are the same as those in the first embodiment.

[0113] The plate 210 can also extend to the two outer sides of the joint 220, and the second channel 250 can also be further extended to connect a wider strip.

[0114] Furthermore, a protrusion 217 corresponding to the through hole 111 of the first connecting member 100 is formed on the bottom surface of the extended plate 210. When the buckle B2 is engaged, a more secure connection can be formed by the closing of the through hole 111 and the protrusion 217.

[0115] like Figure 12As shown, the cross-sections of the bracket 110 and the connecting rod 130 of the first connecting member 100 are formed into stepped curved surfaces by including grooves 131, forming a shape that meets the stepped curved surfaces of the placement groove 230 of the corresponding second connecting member 200 by including protrusions 231, thereby allowing for a more secure and tighter connection during assembly.

[0116] like Figure 13 As shown, a first strap S1 is connected to the first channel 150 of the first connecting member 100, and a second strap S2 is connected to the second channel 250 of the second connecting member 200. The engagement and disengagement of the buckle B2 are achieved in the same manner as in the first embodiment.

[0117] Figures 14 to 17 The buckle B3 relates to a third embodiment of the present invention.

[0118] Figure 14 The diagram shows the 3D model of the snap fastener and its assembly. Figure 15 Parts (a) and (b) are top views of each connecting component, respectively. Figure 16 Parts (a), (b), (c), and (d) are Figure 15 Cross-sectional views and combined cross-sectional views of the FF line, GG line, and HH line. Figure 17 This is a perspective view showing the separation achieved when the buckle and strap are engaged.

[0119] The latch B3 of the third embodiment can basically include the structure of the latch B1 of the first embodiment. Therefore, detailed descriptions of structures that are repeated in the first embodiment will be omitted. Furthermore, the same reference numerals will be used for the same parts that are repeated in the first embodiment.

[0120] The first connecting member 100 is spaced forward from the first base 101 to form a pair of brackets 110. The front end of the bracket 110 is connected by a connecting rod 130. A receiving portion 120 is formed on the inner side of the connecting rod 130. A guide piece 140 and a groove 131 are formed on the connecting rod 130. A first channel 150 for connecting a strap is formed behind the first base 101. These basic structures are the same as those in the first embodiment.

[0121] In this process, a wider first base 101 is formed in the first connecting member 100, which extends to both outer sides of the bracket 110 to form a plurality of auxiliary brackets 110a, and the connecting rod 130 also extends to the auxiliary brackets 110a for connection.

[0122] The rear portion of the first base 101 extends further outward to form a first channel 150, thereby allowing a wider band to be connected. As shown in the figure, two bands can also be connected by forming two first channels 150 simultaneously.

[0123] The support 110 and auxiliary support 110a can form a planar pattern, or, as shown in the attached figure, a structure consisting of multiple auxiliary supports 110a connected therebetween by extending connecting rods 130. Furthermore, as... Figure 15 As shown in part (a), through holes 111 can be formed between the support 110 and each auxiliary support 110a.

[0124] A guide piece 140 is formed protruding substantially from the middle of the connecting rod 130. In the case of the expanded form shown in this embodiment, as shown in the accompanying drawings, auxiliary guide pieces 140a of the same form can also be formed at predetermined intervals.

[0125] The second connecting member 200 extends forward of the second base 201 to form a plate 210. A connecting portion 220, an elastic sheet 211, and a locking protrusion 221 are formed at the front end of the plate 210. A guide groove 240 is formed on the inner side of the plate 210, and a placement groove 230 is formed on the lower side of the plate 210. A protrusion 231 corresponding to the groove 131 is formed in the placement groove 230. A second channel 250 for connecting a strap is formed behind the second base 201. These structures are the same as those in the first embodiment.

[0126] The second base 201 extends further to both sides, and the plate 210 extends further to both outer sides of the joint 220, and also extends further to form the second channel 250, so that a wider strip can be connected. As shown in the figure, two strips can also be connected by forming two second channels 250.

[0127] Moreover, in such Figure 16 The bottom surface of the expanded plate 210 shown in part (c) also protrudes to form protrusions 217 corresponding to the plurality of through holes 111 of the first connecting member 100. When the buckle B3 is engaged, a more secure connection can be formed by the closing of the through holes 111 and the protrusions 217.

[0128] A guide groove 240 is formed in the middle of the inner side of the plate 210 for the guide piece 140 of the first connecting member 100 to engage. In the case of the expanded form shown in this embodiment, as shown in the figure, auxiliary guide grooves 240a of the same form are also formed at predetermined intervals to engage with the auxiliary guide piece 140a of the first connecting member 100.

[0129] like Figure 16As shown in parts (a) to (d), the cross-sections of the bracket 110, auxiliary bracket 110a, and connecting rod 130 of the first connecting member 100 are formed into stepped curved surfaces by including grooves 131, forming a shape that meets the stepped curved surfaces formed by including protrusions 231 on the bottom surface of the placement groove 230 of the corresponding second connecting member 200, thereby allowing for a more secure and tighter connection during assembly.

[0130] like Figure 17 As shown, two first straps S1 are connected to the first channel 150 of the first connecting component 100, and two second straps S2 are connected to the second channel 250 of the second connecting component 200. The engagement and disengagement of the buckle B3 are achieved in the same manner as in the first embodiment. The number of first channels 150 and second channels 250 can also be more than three as needed.

[0131] Figure 18 The figure shows a comparative top view of the buckles B1, B2, and B3 of the first to third embodiments. As shown, the buckles of the present invention are not only applicable to narrow straps, but also to wide straps, and have the expandability to connect two or more straps at the same time.

[0132] Figure 19 The figure shows the state in which the buckle of the present invention is used. It can be applied to vests 300 or backpacks of special shapes, and can be used with straps of various sizes. The buckle can be easily separated by pulling the cord 215 with one hand.

[0133] The above embodiments are for illustrative purposes only. Those skilled in the art will understand that other specific forms can be easily derived without altering the technical concept or essential features of the above embodiments. Therefore, it should be understood that the above embodiments are merely illustrative in all respects and not limiting.

[0134] Compared with the detailed description, the scope of protection to be protected by this specification is shown by the scope of the invention claims, and should be interpreted to include the meaning and scope of the scope of the invention claims, as well as all variations or modifications derived from the equivalent concepts.

Claims

1. A buckle, characterized in that, include: A first connecting component includes a first base, a pair of brackets extending forward from the first base and spaced apart from each other, a connecting rod connecting the front ends of the brackets, a first channel formed at the rear of the first base for connecting a first strap, a receiving portion formed between the first base and the connecting rod, and a locking shoulder formed at one end of the first base; and The second connecting component includes a second base, a plate extending forward from the second base, a connecting portion protruding downward from the front end of the plate to insert into the receiving portion, a locking protrusion formed on the front surface of the connecting portion to engage with a locking shoulder of the first connecting component, a pair of elastic sheets integrally formed on the plate to elastically support the locking protrusion, a pull-out mechanism connected to the elastic sheets, and a second channel formed at the rear of the second base to connect a second strap. The first connecting component and the second connecting component are elastically fastened by the locking shoulder and the locking protrusion. By pulling the pulling mechanism, the elastic plate rotates backward, causing the locking protrusion to disengage from the locking shoulder.

2. The buckle according to claim 1, characterized in that, An inclined guide surface is formed at the first base, which connects to the locking shoulder. When engaged with the second connecting member, the locking protrusion contacts the inclined guide surface and is elastically compressed and inserted.

3. The buckle according to claim 1, characterized in that, The connecting rod of the first connecting member is spaced apart from the first base, forming the receiving portion therebetween. A guide plate that protrudes forward and upward is formed in the middle of the connecting rod. A guide groove is formed in the plate of the second connecting member for the insertion of the guide piece. When the first connecting member and the second connecting member are combined, the combination is induced by guiding the guide piece into the guide groove.

4. The buckle according to claim 3, characterized in that, The end of the guide piece is bent forward to form a shape. The guide groove of the second connecting member is formed in a recessed form on the upper surface of the second base and is tightly engaged with the end of the guide piece.

5. The buckle according to claim 1, characterized in that, A placement groove for inserting the connecting rod is formed between the joint of the second connecting member and the second base. A groove is formed in the connecting rod, and a protrusion corresponding to the groove is formed on the bottom surface of the placement groove. When engaged, the protrusion is tightly engaged in the groove to prevent lateral movement.

6. The buckle according to claim 1, characterized in that, The two ends of the pair of elastic sheets form connecting portions to connect with the plate, and are integrally formed with the plate. The elastic grooves of the elastic sheets are formed in a manner that perpendicularly penetrates the plate. The elastic sheets can elastically rotate backward with the connecting portions as the center.

7. The buckle according to claim 1, characterized in that, The bracket of the first connecting component and the upper surface of the connecting rod form a stepped curved surface. The bottom surface of the placement groove of the second connecting component is formed as a curved surface corresponding to the stepped curved surface. When they are joined, they fit tightly together to maintain a firm joint.

8. The buckle according to claim 1, characterized in that, Auxiliary supports are also formed on both outer sides of the bracket of the first connecting member, and the rear portion of the first base extends to both sides with the same length as the auxiliary supports to form the first channel. The plate of the second connecting member extends outward from the joint to form the same length as the auxiliary bracket, and the rear portion of the second base extends outward from the joint to form the second channel.

9. The buckle according to claim 8, characterized in that, A through hole is formed between the bracket and the auxiliary bracket, and a protrusion corresponding to the through hole is formed on the bottom surface of the plate. When assembled, the through hole and the protrusion close together to form a tight fit.

10. The buckle according to claim 1, characterized in that, Multiple auxiliary supports are formed on both sides of the bracket of the first connecting component, and the connecting rod extends outward to connect with the auxiliary supports. Multiple guide plates protrude from the connecting rod at predetermined intervals. The plate of the second connecting member extends outward from the two sides of the joint with the same length as the auxiliary bracket, and the guide grooves that engage with the guide pieces are formed in a number corresponding to the number of guide pieces.

11. The buckle according to claim 1, characterized in that, The elastic sheet has an annular hole, and the pulling mechanism, selected from ropes, cords, and rings, can pass through the annular hole to pull the elastic sheet.

12. The buckle according to claim 1, characterized in that, The first connecting component and the second connecting component can each form multiple channels to simultaneously connect multiple tapes.

13. The buckle according to claim 1, characterized in that, Ribs or grooves are formed on the upper or lower surface of the plate of the second connecting component.

14. A snap-fit ​​connection method, characterized in that, include: Step (a): Insert the guide piece of the connecting rod formed in the first connecting member into the guide groove of the second connecting member accordingly; Step (b): As the guide piece is guided by the guide groove, the engagement portion of the second connecting member moves relative to the receiving portion of the first connecting member; Step (c): By applying pressure, the locking protrusion of the joint and the elastic sheet are elastically deformed rearward along the inclined guide surface of the first connecting member; as well as Step (d) involves the locking protrusion disengaging from the inclined guide surface, allowing it to elastically engage with the locking shoulder of the first connecting component to complete the fastening process.

15. The snap-fit ​​connection method according to claim 14, characterized in that, Step (b) further includes the following steps: while the joint enters the receiving part, the placement groove of the second connecting member corresponds to the curved surface of the connecting rod and the bracket of the first connecting member, and the protrusion of the placement groove cooperates with the groove of the connecting rod to suppress lateral shaking.

16. The snap-fit ​​connection method according to claim 14, characterized in that, Step (a) further includes the following steps: aligning the curved end of the guide piece to fit closely with the shape of the recess on the upper surface of the second base of the second connecting member, so that the first connecting member and the second connecting member naturally form a connecting shaft as they rotate.

17. The snap-fit ​​connection method according to claim 14, characterized in that, The method also includes the following steps: inserting one or more straps into the first channel of the first connecting component and the second channel of the second connecting component for fixation. The number of channels is two or more, and multiple tapes are connected simultaneously.

18. A method for separating a snap fastener, characterized in that, include: Step (a): With the first connecting part and the second connecting part engaged, pull the rope of the elastic piece connected to the second connecting part in the rearward direction to make the elastic piece rotate in the rearward direction; Step (b) involves disengaging the locking protrusion of the second connecting member from the locking shoulder of the first connecting member by rotating the elastic sheet. as well as Step (c): Rotate or move the second connecting member linearly with the guide plate of the first connecting member and the guide groove of the second connecting member as the center, so that the connecting part of the second connecting member disengages from the receiving part of the first connecting member.

19. The method for separating the snap fastener according to claim 18, characterized in that, Step (a) is performed by pulling the rope with one hand, and step (c) is performed automatically depending on whether the pulling force is maintained or released.

20. The method for separating the snap fastener according to claim 18, characterized in that, It also includes the following steps: after the separation of the first connecting component and the second connecting component is completed, they move relative to each other in such a way that the protrusion on the bottom surface of the second connecting component disengages from the through hole of the first connecting component.

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