Novel pull rope telescopic buckle

Abstract

The utility model relates to a novel pull rope telescopic buckle which comprises a shell, a fixed shaft arranged in the shell and a rotating disc rotatably installed on the fixed shaft, the rotating disc is connected with the fixed shaft through a coil spring, a rope belt is wound on the rotating disc, one end of the rope belt extends to the outside of the shell, and the winding direction of the rope belt is opposite to the spiral direction of the coil spring. A rotating disc is arranged in the shell, ratchets are arranged on the rotating disc, a notch communicated with the interior of the shell is formed in one side of the shell, a locking key is movably arranged in the notch and comprises a clamping part and a pushing part, a through groove used for moving in the notch is formed between the clamping part and the pushing part, the clamping part is located in the shell, and a hook claw is arranged at one end of the clamping part. The utility model aims to provide a novel pull rope telescopic buckle to solve the technical problem that the length of a rope belt of an existing telescopic buckle cannot be fixed at a specific position, so that the existing telescopic buckle is inconvenient to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of telescopic buckles, and particularly relates to a novel drawstring telescopic buckle. Background Art

[0002] A telescopic buckle, also known as an easy-pull buckle, is a telescopic device with a built-in spring reel for manual stretching. The commonly used easy-pull buckle realizes the storage of the cord through its internal retractable spring winding energy storage mechanism. When the cord is pulled out, it drives the spring turntable to rotate, so that the internal spring winding is tightened and stores energy; when the cord is released, the spring turntable rotates under the action of the energy stored in the spring, driving the cord to be retracted into the easy-pull buckle.

[0003] However, the length of the cord of the existing telescopic buckle cannot be fixed at a specific position, that is, the length of the item connected and fixed to it cannot be adjusted according to actual needs and cannot be fixed at a certain position, resulting in inconvenient use. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a novel drawstring telescopic buckle to solve the technical problem that the length of the cord of the existing telescopic buckle cannot be fixed at a specific position, resulting in inconvenient use.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a novel drawstring telescopic buckle, which includes a housing. A fixed shaft and a turntable rotatably installed on the fixed shaft are arranged inside the housing. The turntable is connected to the fixed shaft through a coil spring. A cord is wound on the turntable. One end of the cord extends to the outside of the housing. The winding direction of the cord is opposite to the spiral direction of the coil spring. Ratchet teeth are arranged on the turntable. A notch communicating with the inside of the housing is opened on one side of the housing. A locking key is movably arranged in the notch. The locking key includes an engaging part and a pushing part. A through-notch for moving in the notch is formed between the engaging part and the pushing part. The engaging part is located inside the housing, and a hook is arranged at one end of the engaging part. The hook is controlled to engage with or disengage from the ratchet teeth by pushing the locking key.

[0006] Further, a guiding part is arranged inside the housing. The guiding part is oppositely arranged at the front end of the hook. When the locking key drives the hook to move forward, the guiding part controls the hook to move downward and engage with the ratchet teeth.

[0007] Further, the turntable includes a coil spring accommodating cylinder with an opening on one side. A through-hole for the fixed shaft to pass through is arranged in the middle of the coil spring accommodating cylinder. A protruding edge is arranged on one side of the outer edge of the coil spring accommodating cylinder, and ratchet teeth are arranged on the other side. The area between the ratchet teeth and the protruding edge is a winding area for the cord to wind, and the cord is wound on the winding area of the coil spring accommodating cylinder.

[0008] Further, the fixed shaft is provided with a fixed through groove, and the side wall of the spring winding cylinder is provided with a through groove. One end of the spring is clamped in the fixed through groove of the fixed shaft and thus connected to the fixed shaft. The other end of the spring is clamped at the through hole in the side wall of the spring winding cylinder and thus fixedly connected to the turntable.

[0009] Further, one side of the housing is provided with a cord outlet. A fixed port is provided on one side wall of the turntable. One end of the cord is fixedly connected to the turntable through the fixed port and wound around the turntable in a stacked manner. The other end passes through the cord outlet and extends to the outside of the housing, and a ring plug is connected to its end.

[0010] Further, a through hole is provided in the ring plug, a connecting ring is provided in the through hole, and a plurality of ring buckles are sleeved on the connecting ring.

[0011] Further, a connecting end is provided on the side of the housing opposite to the cord outlet, and a hook is detachably provided on the connecting end.

[0012] By the above technical solution, compared with the prior art, the utility model has the following beneficial effects: A fixed shaft is arranged in the housing, a rotatable turntable is sleeved on the fixed shaft, the turntable and the fixed shaft are connected by a spring, a ratchet tooth is provided on one side of the turntable, a slidable locking key is provided on the housing, and a claw capable of meshing with the ratchet tooth is provided on the locking key. A cord is wound around the turntable, and one end of the cord extends out of the housing; when the locking key is in the open state, the claw and the ratchet tooth are in a disengaged state. At this time, when the cord is stretched, the cord will drive the turntable to rotate, and at the same time, the spring is contracted to store energy. When the cord is released, under the elastic force stored in the spring of the turntable, the turntable makes a reverse rotational movement and at the same time drives the cord to contract; when the locking key is in the closed state, the claw presses down and is caught in the ratchet tooth of the turntable, and the turntable cannot rotate. At this time, the cord cannot be pulled and the cord cannot be retracted either; when it is necessary to fix the length of the telescopic buckle cord at a specific position, first ensure that the locking key is in the open state, stretch the cord outwards. When the required length is determined, dial the locking key to one side to make it closed. At this time, the claw on the locking key will be caught in the ratchet tooth of the turntable. Then release the cord. Since the claw and the ratchet tooth are in a meshed state and cannot move relative to each other, the anti-movement adjustment is realized, so that the cord stays in the original position and will not continue to contract. Through the above method, the functions of cord telescoping and anti-movement at any time are realized, and the technical problem that the length of the existing telescopic buckle cord cannot be fixed at a specific position, resulting in inconvenient use, is solved. Description of the Drawings

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0014] Figure 1 Structural schematic diagram of the present invention;

[0015] Figure 2 Exploded view of the present invention;

[0016] Figure 3 Internal structural schematic diagram of the present invention;

[0017] Figure 4 Schematic diagram of the ratchet teeth and claw structure of the present invention;

[0018] Figure 5 Schematic diagram of the turntable structure of the present invention;

[0019] Figure 6 Schematic diagram of the locking key structure of the present invention;

[0020] The label information of the utility model is as follows:

[0021] 1. Housing; 2. Fixed shaft; 3. Turntable; 4. Torsion spring; 5. Notch; 6. Locking key; 7. Guide part; 101. Rope outlet; 102. Connection end; 201. Fixed through groove; 301. Ratchet teeth; 302. Torsion spring accommodating cylinder; 303. Through hole of the accommodating cylinder; 304. Protruding edge; 305. Winding area; 601. Engaging part; 602. Pushing part; 603. Through groove; 604. Claw;

[0022] The realization of the object, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0023] The following will combine the attached Figure 1-6 in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will also change accordingly.

[0025] In addition, the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0026] As Figure 1-6 shown: A new type of drawstring retractable buckle includes a housing 1. A hollow chamber is formed inside the housing 1. A fixed shaft 2 is provided inside the housing 1, and a turntable 3 is rotatably mounted on the fixed shaft 2. The turntable 3 is connected to the fixed shaft 2 through a torsion spring 4. A cord is wound around the turntable 3. One end of the cord extends to the outside of the housing 1. The winding direction of the cord is opposite to the spiral direction of the torsion spring 4. Ratchet teeth 301 are provided on the turntable 3. A notch 5 communicating with the inside of the housing 1 is formed on one side of the housing 1. A locking key 6 is movably arranged in the notch 5. The locking key 6 includes a engaging portion 601 and a pushing portion 602. A through slot 603 for moving in the notch 5 is formed between the engaging portion 601 and the pushing portion 602. The engaging portion 601 is located inside the housing 1, and a claw 604 is provided at one end of the engaging portion 601. By pushing the locking key 6, the claw 604 is controlled to engage with or disengage from the ratchet teeth 301.

[0027] In this embodiment, the housing 1 is formed by snap-fitting an upper housing and a lower housing. The locking key 6 is integrally arc-shaped and fits on the outer surface of the housing 1. As Figure 6 shown: A connecting block is provided between the engaging portion 601 and the pushing portion 602, and the engaging portion 601, the pushing portion 602 and the connecting block are integrally formed. The through slots 603 are distributed on both sides of the connecting block. An installation position for the locking key 6 to slide is provided on the outer surface of one side of the housing 1. The notch 5 is located in the middle of the installation position. When the locking key 6 is slidably arranged in the notch 5, the engaging portion 601 is located inside the housing 1, and the pushing portion 602 is located outside the housing 1. And a protrusion for easy pushing is provided on the pushing portion 602.

[0028] As Figure 2-4As shown in the figure: A guiding part 7 is arranged inside the housing 1. The guiding part 7 is oppositely arranged at the front end of the claw 604. When the locking key 6 drives the claw 604 to move forward, the guiding part 7 controls the claw 604 to move downward and engage with the ratchet tooth 301. The guiding part 7 and the housing 1 are integrally formed and are inclinedly arranged inside the housing 1. By sliding the locking key 6, the claw 604 slides along the guiding part 7. Since the guiding part 7 is inclined downward, during the sliding process, the distance between the claw 604 and the ratchet tooth 301 gradually decreases until the claw 604 engages with the ratchet tooth 301, locking the turntable 3.

[0029] As Figure 5 shown in the figure: The turntable 3 includes a torsion spring accommodating cylinder 302 with an opening on one side. A chamber is formed inside the torsion spring accommodating cylinder 302. The torsion spring 4 is installed in the chamber. A through hole 303 for the fixing shaft 2 to pass through is arranged in the middle of the torsion spring accommodating cylinder 302. A protruding edge 304 is arranged on one side of the outer edge of the torsion spring accommodating cylinder 302, and a ratchet tooth 301 is arranged on the other side. The winding area 305 for the cord to wind is between the ratchet tooth 301 and the protruding edge 304. The cord 305 winds around the winding area of the torsion spring accommodating cylinder 302.

[0030] As Figure 3 shown in the figure: The fixing shaft 2 is provided with a fixing through groove 201. A through groove is arranged on the side wall of the torsion spring accommodating cylinder 302. One end of the torsion spring 4 is clamped in the fixing through groove 201 of the fixing shaft 2, so as to be connected to the fixing shaft 2. The other end of the torsion spring 4 is clamped at the through hole on the side wall of the torsion spring accommodating cylinder 302, so as to be fixedly connected to the turntable 3.

[0031] As Figure 1-4 shown in the figure: One side of the housing 1 is provided with a cord outlet 101. A fixing port is arranged on one side wall of the turntable 3. One end of the cord is fixedly connected to the turntable 3 through the fixing port and wound around the turntable 3 in an overlapping manner. The other end passes through the cord outlet 101 and extends to the outside of the housing 1, and a loop plug is connected to its end. By setting the loop plug, it can prevent the entire cord from being retracted into the housing 1.

[0032] A through hole is opened on the loop plug, a connecting ring is arranged inside the through hole, several ring buckles are sleeved on the connecting ring, and various items can be optionally hung on the ring buckles.

[0033] As Figure 1-2 shown in the figure: The housing 1 is provided with a connecting end 102 on the side opposite to the cord outlet 101. A hook is detachably arranged on the connecting end 102. The housing 1 can be hung on a backpack or a belt through the hook.

[0034] The working principle of the present utility model is as follows:

[0035] By arranging a fixed shaft 2 inside the housing 1 and sleeving a rotatable turntable 3 on the fixed shaft 2, the turntable 3 and the fixed shaft 2 are connected by a spiral spring 4. One side of the turntable 3 is provided with ratchet teeth 301. The housing 1 is provided with a slidable locking key 6. The locking key 6 is provided with a claw 601 that can engage with the ratchet teeth 301. And a cord is wound around the turntable 3, and one end of the cord extends out of the housing 1; when the locking key 6 is in the open state, the claw 601 and the ratchet teeth 301 are in a disengaged state. At this time, when the cord is stretched, the cord will drive the turntable 3 to rotate, and at the same time, the spiral spring 4 will contract and store energy. When the cord is released, under the elastic force stored in the spiral spring of the turntable 3, the turntable 3 makes a reverse rotational movement, and at the same time drives the cord to contract; when the locking key 6 is in the closed state, the claw 601 presses down and engages with the ratchet teeth 301 of the turntable 3, and the turntable 3 cannot rotate. At this time, the cord cannot be pulled and will not be retracted; when it is necessary to fix the length of the telescopic buckle cord at a specific position, first ensure that the locking key 6 is in the open state, stretch the cord outwards. When the required length is determined, move the locking key 6 to one side to make it closed. At this time, the claw 601 on the locking key 6 will engage with the ratchet teeth 301 of the turntable 3. Then release the cord. Since the claw 601 and the ratchet teeth 301 are in an engaged state, relative movement between the claw 601 and the ratchet teeth 301 is impossible. In this way, the stopping adjustment is achieved, so that the cord stays in the original position and will not continue to contract. Through the above method, the functions of cord telescoping and stopping at any time are realized, and the technical problem that the length of the existing telescopic buckle cord cannot be fixed at a specific position, resulting in inconvenient use, is solved.

[0036] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. All equivalent structural transformations made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied to other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A novel drawstring telescopic buckle, comprising a housing (1), a fixed shaft (2) is arranged inside the housing (1), and a turntable (3) rotatably mounted on the fixed shaft (2), the turntable (3) is connected to the fixed shaft (2) through a torsion spring (4), a cord is wound on the turntable (3), one end of the cord extends to the outside of the housing (1), and the winding direction of the cord is opposite to the spiral direction of the torsion spring (4), characterized in that: The turntable (3) is provided with ratchet teeth (301). One side of the housing (1) is provided with a notch (5) communicating with the inside of the housing (1). A locking key (6) is movably arranged in the notch (5). The locking key (6) includes an engaging part (601) and a pushing part (602). A through slot (603) for moving in the notch (5) is formed between the engaging part (601) and the pushing part (602). The engaging part (601) is located inside the housing (1), and a claw (604) is provided at one end of the engaging part (601). By pushing the locking key (6), the claw (604) is controlled to engage with or disengage from the ratchet teeth (301).

2. The novel drawstring telescopic buckle according to claim 1, characterized in that: A guiding part (7) is arranged inside the housing (1). The guiding part (7) is oppositely arranged at the front end of the claw (604). When the locking key (6) drives the claw (604) to move forward, the guiding part (7) controls the claw (604) to move downward and engage with the ratchet teeth (301).

3. The novel drawstring expansion buckle according to claim 2, characterized in that: The turntable (3) includes a torsion spring accommodating cylinder (302) with an opening on one side. A through hole (303) for the fixing shaft (2) to pass through is provided in the middle of the torsion spring accommodating cylinder (302). A protruding edge (304) is provided on one side of the outer edge of the torsion spring accommodating cylinder (302), and the ratchet teeth (301) are provided on the other side. A winding area (305) for the rope belt to wind is formed between the ratchet teeth (301) and the protruding edge (304). The rope belt is wound around the winding area (305) of the torsion spring accommodating cylinder (302).

4. A novel drawstring telescopic buckle according to claim 3, characterized in that: The fixing shaft (2) is provided with a fixing through slot (201). A through slot is provided on the side wall of the torsion spring accommodating cylinder (302). One end of the torsion spring (4) is clamped in the fixing through slot (201) of the fixing shaft (2) to be connected with the fixing shaft (2), and the other end of the torsion spring (4) is clamped at the through hole on the side wall of the torsion spring accommodating cylinder (302) to be fixedly connected with the turntable (3).

5. A novel drawstring telescopic buckle according to claim 1, characterized in that: A rope belt outlet (101) is provided on one side of the housing (1). A fixing port is provided on one side wall of the turntable (3). One end of the rope belt is fixedly connected with the turntable (3) through the fixing port and is wound around the turntable (3) in an overlapping manner, and the other end passes through the rope belt outlet (101) and extends to the outside of the housing (1), and a loop plug is connected to its end.

6. A novel drawstring retractable buckle according to claim 5, characterized in that: A through hole is provided on the loop plug, and a connecting ring is arranged in the through hole. A plurality of loop buckles are sleeved on the connecting ring.

7. A novel drawstring retractable buckle according to claim 5, characterized in that: A connecting end (102) is provided on the side of the housing (1) opposite to the rope belt outlet (101), and a hook is detachably arranged on the connecting end (102).

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