Inserting buckle with multiple locking structures

Abstract

The utility model discloses an inserting buckle with multiple locking structures, which comprises a female buckle and a male buckle, one end of the female buckle is provided with an inserting groove, and two sides of the inserting groove are rotatably provided with locking pieces in a lever mode; one end of the locking piece extends out of the inserting groove, and a first elastic piece is arranged between the outer side of the other end of the locking piece and the inner wall of the inserting groove. One end of the male buckle is provided with a connecting rod connected with the inserting groove in an inserted mode, and the two sides of the connecting rod are concavely provided with grooves locked with the locking pieces in a clamped mode. One end of the male buckle is further rotationally provided with a buckle piece in a lever mode, one end of the buckle piece extends towards the female buckle and is buckled with the female buckle, and a second elastic piece is arranged between the inner side face of the other end of the buckle piece and the male buckle. According to the utility model, unlocking can be carried out only through simultaneous operation of two hands, so that the unlocking difficulty is greatly improved, and the problem that articles are lost or robbed after being easily unlocked by other people in the use process is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of connecting buckles, and in particular relates to a plug buckle with a multiple locking structure. Background Art

[0002] Buckles are widely used in the connection of belts, backpack straps, etc., to connect and fix the two ends of cloth belts or the ends of two canvas belts, and also play a decorative role. Existing buckles with safety switches generally adopt the principle of levers. By pressing the spring at one end of the buckle, the other end of the buckle is unlocked, thereby realizing the separation of the buckles. In order to prevent the user from accidentally pressing the spring end of the buckle and causing the buckle to be unlocked, the spring is usually set closer to the fulcrum of the lever. The user needs to apply a large force to press the spring end of the buckle to unlock the buckle, but this cannot completely prevent the user from accidentally pressing the spring end of the buckle and causing the buckle to be unlocked. The single locking structure has the characteristics of simple structure and easy unlocking, but the disadvantage is that it is not safe enough and can be easily unlocked by malicious people with one hand, which leads to the loss or robbery of items. Utility Model Content

[0003] The utility model aims to overcome the existing technical defects and provide a buckle with a multiple locking structure, which requires both hands to be operated at the same time to unlock, greatly improving the difficulty of unlocking and avoiding the problem of items being lost or stolen due to being easily unlocked by others during use.

[0004] In order to solve the above-mentioned technical problems, the utility model provides a buckle with a multiple locking structure, including a female buckle and a male buckle, one end of the female buckle is provided with an insertion groove, and both sides of the insertion groove are rotatably provided with locking pieces in the manner of a lever; one end of the locking piece extends outward from the insertion groove, and a first elastic piece is provided between the outer side of the other end and the inner wall of the insertion groove; one end of the male buckle is provided with a connecting rod plugged into the insertion groove, and both sides of the connecting rod are recessed with grooves that engage and lock with the locking piece; one end of the male buckle is also rotatably provided with a fastener in the manner of a lever, one end of the fastener extends toward the female buckle and engages with the female buckle, and a second elastic piece is provided between the inner side surface of the other end and the male buckle.

[0005] Furthermore, the plug-in slot includes a sliding slot in the middle and limiting slots on both sides of the sliding slot, the middle part of the locking piece is hinged in the limiting slot, one end of the locking piece extends outward from the limiting slot, and a first elastic piece is provided between the outer side of the other end and the inner wall of the limiting slot; the connecting rod is slidably arranged in the sliding slot, and the protrusions on both sides of the connecting rod are provided with convex ribs placed in the limiting slot, and the outer side of the convex rib is formed with a groove that engages with the locking piece.

[0006] Furthermore, a receiving groove for receiving the fastener is recessed on the surface of the connecting rod, and the fastener is rotatably arranged in the receiving groove by means of a lever; the second elastic member is arranged between the inner side surface of one end of the fastener and the receiving groove, and a bent buckle is arranged at the other end; a convex hook is arranged in a protrusion in the slide groove to engage with the buckle.

[0007] Furthermore, an opening groove is provided at the bottom of one end of the accommodating groove for the buckle to protrude out of the accommodating groove, and a recessed notch is provided at one end of the connecting rod away from the male buckle for the convex hook to pass through, and the recess is connected to the opening groove.

[0008] Furthermore, the middle part of the fastener is rotatably arranged in the accommodating groove through an elastic pin; the middle part of the fastener is provided with a through hole for accommodating the elastic pin, and rotation holes are provided on both sides of the accommodating groove at positions corresponding to the through holes; the elastic pin includes a first latch member, a second latch member and a third elastic member arranged between the first latch member and the second latch member, and the outer ends of the first latch member and the second latch member both protrude from the through hole and are inserted into the rotation hole; the bottom of the connecting rod is provided with a disassembly hole at a position corresponding to the rotation hole.

[0009] Furthermore, a pressure-stopping paddle is slidably provided on one end of the fastener close to the second elastic member. After the pressure-stopping paddle slides relative to the fastener, the whole is placed in the receiving groove or one end protrudes out of the receiving groove and abuts against the surface of the male buckle.

[0010] Furthermore, a positioning structure is provided between the buckle and the pressure-stopping paddle, and the positioning structure includes a round ball and a fourth elastic member provided between the round ball and the buckle, and the inner side surface of the pressure-stopping paddle is provided with two spherical grooves that engage with the round ball along its sliding direction.

[0011] Furthermore, a fixing portion is protruded on the inner side surface of one end of the fastener, and a positioning groove for accommodating the fourth elastic member is concavely provided in the middle of the fixing portion; one end of the second elastic member is sleeved on the outside of the fixing portion.

[0012] Furthermore, a first fixing hole is provided at one end of the female buckle away from the plug-in slot, a second fixing hole is provided at one end of the male buckle away from the connecting rod, and a fixing rod that can slide back and forth is provided in the second fixing hole.

[0013] Furthermore, a first fixing hole is provided at one end of the female buckle away from the plug-in slot, a second fixing hole is provided at one end of the male buckle away from the connecting rod, and fixing rods that can slide back and forth are provided in both the first fixing hole and the second fixing hole.

[0014] The utility model has the following beneficial effects:

[0015] In the utility model, by providing a locking piece and a fastener, the male buckle and the female buckle form a double locking structure after being plugged in, that is, there are two locking parts between the male buckle and the female buckle. When unlocking, both hands are needed to operate simultaneously, that is, one hand presses the locking piece to separate it from the connecting rod, and the other hand presses the fastener to separate it from the female buckle, and then the male buckle and the female buckle are separated. This operation method greatly improves the difficulty of unlocking the male buckle and the female buckle, and avoids the problem of items being lost or stolen due to being easily unlocked by others during use.

[0016] Additional aspects and advantages of the present invention will be partially given in the following description, which will become apparent from the following description or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of a buckle in an embodiment;

[0019] Figure 2 is a front cross-sectional view of the buckle in the embodiment;

[0020] Figure 3 is a side cross-sectional view of the buckle in the embodiment;

[0021] Figure 4 A schematic diagram of a male buckle in an embodiment;

[0022] Figure 5 A schematic diagram of another viewing angle of the male buckle in the embodiment;

[0023] Figure 6 Schematic diagram of a female buckle in an embodiment;

[0024] Figure 7 is a schematic diagram of a fastener in an embodiment;

[0025] Figure 8 is a schematic diagram of another viewing angle of the fastener in the embodiment;

[0026] Fig. 9 is a schematic diagram of an elastic latch in an embodiment;

[0027] Fig.10 A schematic diagram of a pressure-stopping paddle in an embodiment;

[0028] Fig.11 A schematic diagram of the stop pressure paddle from another perspective in the embodiment;

[0029] Fig.12 Schematic diagram of a buckle in another embodiment. DETAILED DESCRIPTION

[0030] In order to more fully understand the technical content of the present invention, the present invention will be further introduced and explained in conjunction with the accompanying drawings and specific embodiments below; it should be noted that descriptions such as "first" and "second" in the text are used to distinguish different components, etc., and do not represent the order of precedence, nor do they limit the "first" and "second" to different types.

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the utility model.

[0032] Example

[0033] like Figures 1 to 11 As shown, the buckle with a multiple locking structure shown in this embodiment includes a female buckle 1 and a male buckle 2, one end of the female buckle 1 is provided with an insertion groove, and both sides of the insertion groove are rotatably provided with locking pieces 11 in the manner of a lever; one end of the locking piece 11 extends outward from the insertion groove, and a first elastic piece 12 is provided between the outer side of the other end and the inner wall of the insertion groove, that is, by pressing inwardly one end of the locking piece 11 extending out of the insertion groove, the other end will rotate outward and compress the first elastic piece 12; one end of the male buckle 2 is provided with a connecting rod 21 plugged into the insertion groove, and both sides of the connecting rod 21 are recessed with grooves 20 engaged and locked with the locking piece 11, that is, after the connecting rod is inserted into the insertion groove and inserted into place, one end of the locking piece 11 is inserted into the groove 20, A first locking structure is formed between the female buckle and the male buckle, and when the outer end of the locking piece 11 is pressed, the inner end of the locking piece can be rotated outward to compress the first elastic piece 12 and leave the groove 20 to unlock the female buckle and the male buckle; one end of the male buckle 2 is also provided with a fastener 22 in the manner of a lever, one end of the fastener 22 extends toward the female buckle 1 and is fastened with the female buckle 1, and a second elastic piece 23 is provided between the inner side surface of the other end and the male buckle 2. The fastening structure of the fastener 22 and the female buckle forms a second locking structure between the female buckle and the male buckle, that is, after the female buckle 1 and the male buckle 2 are plugged into place, one end of the fastener 22 is just engaged with the female buckle, and when unlocking, the other end of the fastener 22 needs to be pressed downward to make its fastened end tilt up and separate from the female buckle.

[0034] During the plug-in process of the female buckle 1 and the male buckle 2, when the front end of the connecting rod 21 is inserted inward along the plug-in groove, it first contacts and squeezes the locking piece 11, causing the locking piece 11 to rotate outward and compress the first elastic piece 12. After the connecting rod 21 is inserted into place, the position of the locking piece 11 corresponds to the position of the groove 20, the locking piece 11 is released from the compressed state, and rotates inward under the elastic force of the first elastic piece 12 and is stuck in the groove, so that the locking piece 11 and the connecting rod 21 are engaged and locked, and at the same time, the fastener 22 is engaged with the female buckle 1 under the action of the second elastic piece 23.

[0035] In the above structure, through the setting of locking pieces and fasteners, the male buckle and the female buckle form a double locking structure after being plugged in, that is, there are two locking parts between the male buckle and the female buckle. When unlocking, both hands are needed to operate simultaneously to unlock, that is, one hand presses the locking piece to separate it from the connecting rod, and the other hand presses the fastener to separate it from the female buckle, and then the male buckle and the female buckle are separated. This operation method greatly improves the difficulty of unlocking the male buckle and the female buckle, avoiding the problem of items being lost or stolen due to being easily unlocked by others during use.

[0036] In one embodiment, as shown in the figure, the plug-in slot includes a middle slide slot 13 and limit slots 14 located on the left and right sides of the slide slot 13; the middle part of the locking member 11 is hinged in the limit slot 14 through a pin 35, one end of the locking member 11 extends outward from the limit slot 14, and a first elastic member 12 is provided between the outer side of the other end and the inner wall of the limit slot 14; the connecting rod 21 is slidably arranged in the slide slot 13, and the two side protrusions of the connecting rod 21 are provided with convex ribs 24 placed in the limit slot 14, and the outer side of the convex rib 24 is formed with a groove 20 engaged with the locking member 11; the upper side of the slide slot 13 is an open structure, and the lower side is a sealing structure, so that the surface of the connecting rod 21 is exposed to the outside, and the slide slot 13 and the limit slots 14 on both sides cooperate to achieve the guiding and limiting effects of the insertion process of the connecting rod 21.

[0037] Preferably, a convex strip 241 is provided on the surface of the convex rib 24, and the height of the convex strip 241 gradually increases from the front end to the rear end of the convex rib 24, so as to enhance the stability of the female buckle 1 and the male buckle 2 after connection.

[0038] Preferably, a fixing seat 111 is provided on the inner end protrusion of the locking member 11, and one end of the first elastic member 12 is sleeved on the outside of the fixing seat 111, so as to avoid the first elastic member 12 being displaced in the limiting groove 14 so that the locking member 11 cannot be effectively engaged with the groove, thereby ensuring the connection stability and reliability of the entire buckle.

[0039] Preferably, the inner end of the locking piece 11 and both sides of the end of the connecting rod 21 and the groove all adopt an arc transition structure to facilitate smooth sliding between the locking piece 11 and the connecting rod 21 and avoid the problem of the locking piece 11 getting stuck.

[0040] In one embodiment, the surface of the connecting rod 21 is recessed with a receiving groove 25 extending to the male buckle 2, and the fastener 22 is rotatably arranged in the receiving groove 25 by means of a lever; a second elastic member 23 is provided between the inner side surface of one end of the fastener 22 away from the female buckle 1 and the receiving groove 25, and a bent buckle 26 is provided at the other end; the sealing side protrusion in the slide groove 13 is provided with a convex hook 15 that engages with the buckle 26, that is, the convex hook 15 and the buckle 26 cooperate to form a second locking structure between the female buckle 1 and the male buckle 2.

[0041] Preferably, an opening groove 27 is provided at the bottom of the end of the accommodating groove 25 away from the second elastic member 23 for the buckle to protrude out of the accommodating groove 25, so as to realize the buckle 26 and the external convex hook 15 to buckle together. When unlocking, the end of the buckle 22 with the second elastic member 23 is pressed to make one end of the buckle 26 tilt upward and separate from the convex hook; the bottom of the end of the connecting rod 21 away from the male buckle 2 is recessed upward to provide a clearance notch 28 for the convex hook 15 to pass through, and the clearance notch 28 is connected with the opening groove 27, that is, when the connecting rod is inserted inward, the clearance notch 28 can be used to make the connecting rod pass forward through the convex hook 15, and the convex hook 15 can enter the opening groove 27 and buckle with the buckle 26. This structure can compress the thickness of the male buckle and the female buckle, making the overall structure compact and as miniaturized as possible.

[0042] In one embodiment, the middle of the fastener 22 is rotatably arranged in the receiving groove 25 through an elastic latch; a through hole 221 for accommodating the elastic latch is provided in the middle of the fastener 22, and rotation holes 251 are provided on both sides of the receiving groove 25 at positions corresponding to the through hole 221; the elastic latch includes a first latch member 222, a second latch member 223, and a third elastic member 224 arranged between the first latch member 222 and the second latch member 223, and the outer ends of the first latch member 222 and the second latch member 223 both protrude out of the through hole 221 and are inserted into the rotation holes 251 on the corresponding sides; the bottom of the connecting rod 21 is at the corresponding rotation hole 251. A disassembly hole 252 is provided at the position of the movable hole 251, and an elastic latch structure is used to cooperate with the disassembly hole 252. During disassembly, a tool is inserted into the rotating hole 251 from the disassembly hole 252, and then the first latch member 222 and the second latch member 223 are squeezed to retract them into the through hole 221, and then the fastener is disassembled; when assembling the fastener 22, the outer end of the first latch member 222 in the through hole 221 is inserted into the rotating hole, and the second latch member 223 can be quickly assembled into another rotating hole after pressing. This assembly method is similar to the assembly method of a watch, which increases the assembly efficiency of the fastener 22.

[0043] In one embodiment, a pressure-stop paddle 29 is slidably provided on the surface of one end of the fastener 22 close to the second elastic member 23. After the pressure-stop paddle 29 slides relative to the fastener, the whole is placed in the receiving groove 25 or one end protrudes out of the receiving groove 25 and abuts against the surface of the male buckle 2, that is, when there is no need to press the fastener 22, the pressure-stop paddle 29 is slid outward, and then one end of it slides out of the range of the receiving groove 25 and abuts against the surface of the male buckle 2. At this time, the fastener 22 cannot be pressed downward, thereby further adding a safety lock to form a multiple locking structure; and when it is necessary to press and unlock, the pressure-stop paddle 29 is slid inward, and then the whole is located within the range of the receiving groove 25, that is, the whole is located on the surface of the fastener 22. At this time, the pressure-stop paddle 29 has no stop, and the fastener 22 can be pressed downward to be unlocked.

[0044] In one embodiment, a positioning structure is provided between the buckle 22 and the pressure-stop paddle 29, the positioning structure comprising a ball 30 and a fourth elastic member 31 provided between the ball 30 and the buckle 22, the fourth elastic member 31 exerts an upward elastic force on the ball 30, and the inner side surface of the pressure-stop paddle 29 is concavely provided with two spherical grooves 32 that engage with the ball 30 along its sliding direction, the positions of the two spherical grooves 32 respectively correspond to the unlocked and locked positions of the pressure-stop paddle 29. When the pressure-stop paddle 29 slides outward and is in a locked state, the ball 30 is snapped into the inner spherical groove 32 under the action of the fourth elastic member 31, forming a certain limiting force to prevent the pressure-stop paddle 29 from being mis-locked after self-sliding; when the pressure-stop paddle 29 slides inward and is in an unlocked state, the ball 30 is snapped into the outer spherical groove 32 under the action of the fourth elastic member 31, forming a certain limiting force to prevent the pressure-stop paddle 29 from mis-sliding and causing the buckle 22 to be unable to be pressed downward.

[0045] Preferably, a fixing portion 33 is protruded from the inner side surface of the end of the fastener 22 away from the buckle 26, and a positioning groove 34 for accommodating the fourth elastic member 31 is recessed in the middle of the upper end of the fixing portion 33; one end of the second elastic member 23 is sleeved on the outside of the fixing portion 33, that is, the fixing portion 33 also serves as a fixing seat for the second elastic member 23, thereby avoiding the problem of the second elastic member 23 being displaced or deflected, resulting in failure of the fastener.

[0046] Specifically, the surface of the pressure-stop paddle 29 is provided with anti-slip grooves 291 , and the provision of the anti-slip grooves 291 increases the friction force when the paddle is moved, avoids the phenomenon of ineffective movement of the pressure-stop paddle, and ensures the effectiveness of opening or closing the pressure-stop paddle.

[0047] In one embodiment, if Figure 1As shown, a first fixing hole 16 is provided at one end of the female buckle 1 away from the plug-in slot, and the first fixing hole 16 is used to fix one end of the connecting belt, that is, the end of the connecting belt is passed through the first fixing hole 16 and then fixed by sewing thread to form a fixed connection structure in which the length of the connecting belt cannot be adjusted; a second fixing hole 17 is provided at one end of the male buckle 2 away from the connecting rod 21, and a fixing rod 18 that can slide back and forth is provided in the second fixing hole 17, and the second fixing hole 17 is divided into two parts of hole positions, front and rear, by the fixing rod 18. When the connecting belt is wrapped around the hole positions of the front and rear parts of the fixing rod, the connecting belt forms a movable connection structure with adjustable length.

[0048] In another embodiment, if Fig.12 As shown, a first fixing hole 16 is provided at one end of the female buckle away from the plug-in slot, and a second fixing hole 17 is provided at one end of the male buckle away from the connecting rod 21, and fixing rods 18 that can slide back and forth are provided in the first fixing hole 16 and the second fixing hole 17, and the two fixing holes can be divided into front and rear two parts of hole positions by the fixing rod 18. The first fixing hole 16 and the second fixing hole 17 are both used to fix one end of the connecting belt, that is, when the connecting belt is wrapped around the hole positions of the front and rear parts of the fixing rod, the connecting belt forms a movable connection structure with adjustable lengths at both ends.

[0049] In other embodiments, the first elastic member, the second elastic member, the third elastic member and the fourth elastic member are preferably springs.

[0050] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A buckle with a multiple locking structure, comprising a female buckle and a male buckle, characterized in that: One end of the female buckle is provided with an insertion slot, and locking pieces are rotatably provided on both sides of the insertion slot in the manner of a lever; one end of the locking piece extends outward from the insertion slot, and a first elastic piece is provided between the outer side of the other end and the inner wall of the insertion slot; One end of the male buckle is provided with a connecting rod which is plugged into the plug-in groove, and both sides of the connecting rod are recessed with grooves which are engaged and locked with the locking piece; one end of the male buckle is also provided with a fastener which is rotatable in the manner of a lever, one end of the fastener extends toward the female buckle and is engaged with the female buckle, and a second elastic piece is provided between the inner side surface of the other end and the male buckle.

2. The buckle with multiple locking structure as claimed in claim 1, characterized in that: The plug-in slot includes a sliding slot in the middle and limiting slots on both sides of the sliding slot, the middle part of the locking piece is hinged in the limiting slot, one end of the locking piece extends outward from the limiting slot, and a first elastic piece is provided between the outer side of the other end and the inner wall of the limiting slot; the connecting rod is slidably arranged in the sliding slot, and the protrusions on both sides of the connecting rod are provided with convex ribs placed in the limiting slot, and the outer side of the convex rib is formed with a groove that engages with the locking piece.

3. The buckle with multiple locking structure as claimed in claim 2, characterized in that: The surface of the connecting rod is recessed with a receiving groove for accommodating the fastener, and the fastener is rotatably arranged in the receiving groove by means of a lever; the second elastic member is arranged between the inner side surface of one end of the fastener and the receiving groove, and a bent buckle is arranged at the other end; a convex hook is arranged in the protrusion in the slide groove to engage with the buckle.

4. The buckle with multiple locking structure as claimed in claim 3, characterized in that: An opening groove is provided at the bottom of one end of the receiving groove for the buckle to protrude out of the receiving groove, and a recessed notch is provided at one end of the connecting rod away from the male buckle for the convex hook to pass through, and the recess is connected to the opening groove.

5. The buckle with multiple locking structure as claimed in claim 4, characterized in that: The middle part of the fastener is rotatably arranged in the accommodating groove through an elastic latch; a through hole for accommodating the elastic latch is provided in the middle part of the fastener, and rotation holes are provided on both sides of the accommodating groove at positions corresponding to the through holes; the elastic latch includes a first latch member, a second latch member and a third elastic member arranged between the first latch member and the second latch member, and the outer ends of the first latch member and the second latch member both protrude from the through hole and are inserted into the rotation hole; a disassembly hole is provided at the bottom of the connecting rod at a position corresponding to the rotation hole.

6. The buckle with a multiple locking structure according to any one of claims 3 to 5, characterized in that: A pressure-stopping paddle is slidably provided on one end of the fastener close to the second elastic member. After the pressure-stopping paddle slides relative to the fastener, the whole is placed in the receiving groove or one end protrudes out of the receiving groove and abuts against the surface of the male buckle.

7. The buckle with multiple locking structure as claimed in claim 6, characterized in that: A positioning structure is provided between the buckle and the pressure-stopping paddle, and the positioning structure includes a round ball and a fourth elastic member provided between the round ball and the buckle, and the inner side surface of the pressure-stopping paddle is provided with two spherical grooves that engage with the round ball along its sliding direction.

8. The buckle with multiple locking structure as claimed in claim 7, characterized in that: A fixing portion is protruded from the inner side surface of one end of the fastener, and a positioning groove for accommodating the fourth elastic member is concavely provided in the middle of the fixing portion; one end of the second elastic member is sleeved on the outside of the fixing portion.

9. The buckle with multiple locking structure according to claim 1, characterized in that: A first fixing hole is provided at one end of the female buckle away from the insertion slot, a second fixing hole is provided at one end of the male buckle away from the connecting rod, and a fixing rod that can slide back and forth is provided in the second fixing hole.

10. The buckle with multiple locking structure as claimed in claim 1, characterized in that: A first fixing hole is provided at one end of the female buckle away from the insertion slot, a second fixing hole is provided at one end of the male buckle away from the connecting rod, and fixing rods that can slide back and forth are provided in both the first fixing hole and the second fixing hole.

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