A hook and loop fastener with easy opening

Abstract

The utility model relates to the field of hardware, especially a hook and buckle convenient to open and close, its structure includes: the hook body, the ring of rotation connection in the hook body bottom, the hook body from top to bottom includes the hook part and the cylindrical connecting part, the hook part forms the opening for the lock of outside object, the cylindrical connecting part is equipped with the buckle piece of control opening and closing, the buckle piece includes the connecting cylinder that slides along the cylindrical connecting part up and down, the connecting cylinder top end has the buckle tooth that cooperates with the opening, the connecting cylinder lateral wall has the limit hole that passes through with inside, the cylindrical connecting part is equipped with the stop mechanism for with limit hole cooperation, the utility model discloses through the sliding cooperation of buckle piece along the cylindrical connecting part and the automatic clamping of stop mechanism, realizes the self -locking function of positioning keeping after unlocking and reset, does not need to continuously apply force after unlocking, and the operation is labor saving and responds quickly, especially suitable for the use scene that needs to open and close frequently or maintains the open state temporarily, improves the convenience and stability of hook and buckle use.

Description

Technical Field

[0001] This utility model relates to the field of hardware products, and in particular to a hook that is easy to open and close. Background Technology

[0002] Hooks and loops, as functional components used to quickly connect and disconnect parts, are increasingly widely used in daily life and various fields. For example, in the field of everyday items such as bags and shoulder bags, hooks and loops enable convenient connection between the bag body and shoulder straps and accessories; in the field of pet supplies, hooks and loops are core connecting components for products such as pet leashes and collars.

[0003] A locking rotary hook is disclosed in patent document CN219537638U, including a hook body, a rotating sleeve, and a hanging ring. The hook body includes a hook part, an assembly part, and an extension rod from top to bottom. The top surface of the assembly part is provided with a movable groove, which penetrates the side wall of the assembly part. A locking rod is installed in the movable groove. A compression spring is provided between the bottom of the locking rod and the movable groove. The top end of the locking rod contacts the end of the hook part. A pushing block is provided in the middle of the outer wall of the locking rod. The side wall of the rotating sleeve is provided with a limiting groove that penetrates the top surface. The pushing block protrudes from the outer wall of the rotating sleeve through the limiting groove. An annular ring is provided in the inner cavity of the rotating sleeve. The top surface of the annular ring is provided with a through hole that penetrates the bottom surface of the rotating sleeve. A spring is installed in the through hole. A ball is provided at the top end of the spring. The bottom surface of the assembly part is distributed with slots that fit the ball.

[0004] In practical applications, it still has the following shortcomings: Existing hooks usually adopt a spring-return locking structure, with a spring at the bottom of the locking rod. By pressing the locking rod, the spring is compressed, and the locking rod moves downward against the spring force, thereby disengaging its top from the hook end to achieve unlocking. When the locking rod is released, the spring elastically returns to its original position and pushes the locking rod upward, causing its top to re-engage with the hook end to complete the locking. Therefore, the locking rod cannot remain in the unlocked position after unlocking, and continuous pressing is required to maintain the unlocked state. This is extremely inconvenient in scenarios where the unlocked state needs to be temporarily maintained, such as frequent hanging and picking of items or temporary assembly of hooks. Utility Model Content

[0005] This invention provides a hook that is easy to open and close, which can effectively solve the above problems.

[0006] This utility model is implemented as follows:

[0007] A hook and latch that is easy to open and close includes: a hook body and a hanging ring rotatably connected to the bottom of the hook body. The hook body includes a hook portion and a columnar connecting portion from top to bottom. The hook portion forms an opening for locking external objects. The columnar connecting portion is fitted with a fastening element for controlling the opening and closing of the opening. The fastening element includes a connecting cylinder that slides up and down along the columnar connecting portion. The top of the connecting cylinder has a fastening tooth that engages with the opening. The side wall of the connecting cylinder has a limiting hole that communicates with the inner side. The columnar connecting portion is provided with a locking mechanism for engaging with the limiting hole. When the fastening tooth abuts against the top of the opening, the locking mechanism engages with the limiting hole to fix it in place.

[0008] As a further improvement, the columnar connecting part has mounting holes extending through both the front and rear ends; the locking mechanism includes a spring disposed in the mounting hole and stop members respectively abutting against the two ends of the spring, and the limiting holes are respectively disposed at the front and rear ends of the connecting cylinder and have a diameter smaller than the diameter of the stop members.

[0009] As a further improvement, a groove is formed below the opening of the hook portion for the engaging teeth to slide up and down.

[0010] As a further improvement, the bottom end of the hook is formed with a locking step for restricting the upward movement of the connecting cylinder, and the bottom end of the hook is a cylindrical structure; the outer wall of the connecting cylinder is a cylindrical structure with the same diameter as the bottom end of the hook.

[0011] As a further improvement, the tip of the engaging tooth has a smooth bevel that mates with the tip of the hook opening.

[0012] As a further improvement, the stop element is a steel ball.

[0013] As a further improvement, the outer wall of the connecting cylinder also has an arc-shaped groove corresponding to the limiting hole.

[0014] As a further improvement, a connecting seat is fitted at the bottom of the columnar connecting part, and the hanging ring is rotatably connected to the bottom of the connecting seat.

[0015] As a further improvement, a first annular groove is formed at one end of the columnar connecting part that is connected to the connecting seat, and a second annular groove corresponding to the first annular groove is formed on the inner side of the connecting seat. A feeding hole is provided on the surface of the connecting seat that is connected through the second annular groove. The diameter of the feeding hole is less than or equal to the height of the second annular groove. A plug hole corresponding to the feeding hole is formed in the first annular groove of the columnar connecting part. An iron wire is installed between the first annular groove and the second annular groove through the feeding hole.

[0016] As a further improvement, a rotating rod is also fitted at the bottom of the connecting seat, the hanging ring is rotatably connected to the bottom of the rotating rod, and a fastening ring is also provided at the bottom of the rotating rod to prevent the hanging ring from falling off.

[0017] The beneficial effects of this utility model are:

[0018] This utility model achieves the self-locking function of maintaining the position after unlocking and resetting by sliding the fastener along the columnar connection and automatically engaging with the locking mechanism. No continuous force is required after unlocking, making operation labor-saving and responsive. It is especially suitable for use scenarios that require frequent opening and closing or temporary maintenance of the open state, improving the convenience and stability of hook and buckle use. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a hook that is easy to open and close, provided by this utility model;

[0021] Figure 2 This is a front cross-sectional view of the hook and buckle provided by this utility model.

[0022] Figure 3 This utility model provides Figure 2 Enlarged structural diagram of A in the middle;

[0023] Figure 4 This is a schematic diagram of the hook and clasp provided by this utility model from the left view.

[0024] Figure 5 This utility model provides Figure 4 Enlarged structural diagram of B;

[0025] Figure 6 This is a front view structural diagram of the hook body provided by this utility model;

[0026] Figure 7 This is a schematic diagram of the hook body from the left side provided by this utility model;

[0027] Figure 8 These are front and left view structural schematic diagrams of the fastener provided by this utility model;

[0028] Figure 9 This is a schematic diagram of the structure of the connector provided by this utility model;

[0029] Figure 10 This is a half-sectional structural diagram of the connector provided by this utility model;

[0030] Figure 11This is a structural diagram of the hook and clasp in the closed and half-open states provided by this utility model.

[0031] In the diagram: 1. Hook body; 11. Hook part; 12. Columnar connecting part; 13. Mounting hole; 14. Slide groove; 15. First annular groove; 16. Insertion hole; 2. Hanging ring; 3. Fastening part; 31. Connecting cylinder; 32. Fastening tooth; 33. Limiting hole; 41. Spring; 42. Stopping part; 5. Connecting seat; 51. Second annular groove; 52. Feeding hole; 53. Rotating rod; 54. Fastening ring; 7. Iron wire. Detailed Implementation

[0032] All embodiments of this utility model are intended to fall within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating that the purpose, technical solution, and advantages of the method are clearer. The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort indicate or imply the relative importance of the indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] Existing hooks typically employ a spring-return locking structure. A spring is located at the bottom of the locking rod. Pressing the locking rod compresses the spring, causing the locking rod to move downwards against the spring's elastic force, thus releasing its tip from the hook end and unlocking it. When the locking rod is released, the spring elastically returns to its original position and pushes the locking rod upwards, causing its tip to re-engage with the hook end, completing the locking process. Therefore, the locking rod cannot remain in the unlocked position after unlocking; continuous pressing is required to maintain the unlocked state. This is extremely inconvenient in scenarios requiring frequent hanging and unloading of items or temporary hook assembly where the unlocked state needs to be maintained temporarily. To address these technical problems, this paper proposes the following technical solution:

[0035] Reference Figures 1-11As shown, a hook and latch that is easy to open and close includes: a hook body 1 and a hanging ring 2 rotatably connected to the bottom of the hook body 1. The hook body 1 includes a hook portion 11 and a columnar connecting portion 12 from top to bottom. The hook portion 11 forms an opening for locking external objects. The columnar connecting portion 12 is fitted with a fastening member 3 for controlling the opening and closing of the opening. The fastening member 3 includes a connecting cylinder 31 that slides up and down along the columnar connecting portion 12. The top of the connecting cylinder 31 has a fastening tooth 32 that engages with the opening. The side wall of the connecting cylinder 31 has a limiting hole 33 that communicates with the inner side. The columnar connecting portion 12 is provided with a locking mechanism 4 for engaging with the limiting hole 33. When the fastening tooth 32 abuts against the top of the opening, the locking mechanism 4 engages with the limiting hole 33 to fix it.

[0036] Therefore, when in use, press down on the connecting cylinder 31 to disengage the fastening teeth 32 from the opening. At the same time, the limiting hole 33 moves down and displaces relative to the locking mechanism 4 until the two disengage. At this time, the fastening part 3 is in the unlocked state, and the connecting cylinder 31 can remain in the pressed position without continuous force. When it is necessary to re-lock, push the connecting cylinder 31 upward to reset the fastening teeth 32 and insert them into the opening. The limiting hole 33 moves up to align with the locking mechanism 4 and engages and fixes, thus achieving automatic positioning and locking.

[0037] This application achieves a self-locking function by sliding the fastener 3 along the columnar connecting part 12 and automatically engaging with the locking mechanism 4, thus realizing the positioning retention after unlocking and the self-locking function during reset. After unlocking, no continuous force is required, making operation labor-saving and responsive. It is especially suitable for use scenarios that require frequent opening and closing or temporary maintenance of the open state, improving the convenience and stability of hook and buckle use.

[0038] Furthermore, the columnar connecting part 12 has mounting holes 13 extending through both the front and rear ends; the locking mechanism 4 includes a spring 41 disposed in the mounting hole 13, and stop members 42 respectively abutting against and connected to both ends of the spring 41; the limiting holes 33 are respectively disposed at the front and rear ends of the connecting cylinder 31 and have a diameter smaller than the diameter of the stop members 42; when locking, when the connecting cylinder 31 moves upward until the limiting hole 33 is aligned with the stop member 42, the spring 41 pushes the stop member 42 outward and locks it into the limiting hole 33, thereby achieving automatic positioning and locking; when unlocking, the connecting cylinder 31 moves downward, the limiting hole 33 disengages from the stop member 42, the stop member 42 is squeezed inward and compresses the spring 41, thereby achieving unlocking and sliding.

[0039] The hook portion 11 has a groove 14 below the opening for the locking tooth 32 to slide up and down. The groove 14 and the locking tooth 32 slide together to ensure that the locking tooth maintains a stable trajectory during the lifting process and avoids lateral deviation, thereby improving locking accuracy and structural durability. Furthermore, when the connecting cylinder 31 moves down completely, the top of the locking tooth 32 remains inside the groove 14 to prevent the locking tooth 32 from disengaging from the groove 14.

[0040] The bottom end of the hook 11 has a locking step for limiting the upward movement of the connecting cylinder 31, and the bottom end of the hook 11 has a cylindrical structure; the outer wall of the connecting cylinder 31 has a cylindrical structure with the same diameter as the bottom end of the hook 11; when the locking step abuts against the top end face of the connecting cylinder 31, it limits its continued upward movement, and at the same time, the top of the engaging tooth 32 abuts against the top of the opening of the hook 11, achieving precise positioning of the locked state; at the same time, the bottom end of the connecting cylinder 31 and the hook 11 have the same diameter as the cylindrical structure, so in the locked state, the overall shape is continuous and regular, avoiding accidental unlocking caused by accidentally touching the connecting cylinder during use.

[0041] The top of the engaging tooth 32 has a smooth bevel that mates with the top of the opening of the hook 11; this ensures stable contact during locking and improves locking reliability.

[0042] The stop 42 is a steel ball; therefore, when the connecting cylinder 31 moves down, it is guided to smoothly enter the mounting hole 13, thereby compressing the spring 41 and achieving smooth unlocking; when the connecting cylinder 31 moves up, the stop 42 slides along the inner wall of the mounting hole 13 and automatically springs into the limiting hole 33 under the action of the spring 41 to complete the locking. The whole process is smooth and responsive, effectively improving the convenience of operation and structural stability.

[0043] The outer wall of the connecting cylinder 31 also has an arc-shaped groove corresponding to the limiting hole 33; the arc-shaped groove fits naturally with the finger, improving grip comfort and control precision, and maintaining a stable feel during frequent opening and closing actions. Anti-slip textures or a soft coating can also be provided on the surface of the arc-shaped groove to further enhance friction and tactile feedback, prevent slippage during operation, and improve the overall user experience.

[0044] The bottom of the columnar connecting part 12 is fitted with a connecting seat 5, and the hanging ring 2 is rotatably connected to the bottom of the connecting seat 5; thus enabling the hanging ring to rotate freely on the connecting seat.

[0045] To facilitate the assembly of the hook and buckle, a first annular groove 15 is formed at one end of the columnar connecting part 12 connected to the connecting seat 5. A second annular groove 51 corresponding to the first annular groove 15 is formed on the inner side of the connecting seat 5. A feeding hole 52 is provided on the surface of the connecting seat 5 and is connected through the second annular groove 51. The diameter of the feeding hole 52 is less than or equal to the height of the second annular groove 51. The first annular groove 15 of the columnar connecting part 12 is formed with a plug hole 16 corresponding to the feeding hole 52. A wire 7 is installed between the first annular groove 15 and the second annular groove 51 through the feeding hole 52.

[0046] During assembly, first insert the spring 41 and the stop 42 into the mounting holes 13 respectively. Then, insert the connecting cylinder 31 upward through the bottom of the columnar connecting part 12, so that the limiting hole 33 on the connecting cylinder 31 is aligned with the mounting hole 13. Then, the stop 42 is pushed into the limiting hole 33 by the spring 41, completing the pre-assembly of the locking mechanism. Next, insert the connecting seat 5 into the bottom of the columnar connecting part 122, and rotate the connecting seat 5 so that the feeding hole 52 is aligned with the insertion hole 16. Then, thread one end of the wire 7 through the hole. The wire 7 is inserted into the insertion hole 16 through the feeding hole 52 to fix one end of the wire. Then, the connecting seat 5 or the columnar connecting part 122 is rotated to make the connecting seat 5 and the columnar connecting part 122 rotate relative to each other around the axis of the columnar connecting part 122. Since one end of the wire 7 has been fixed to the insertion hole 16, the wire 7 is fed into the first annular groove 15 and the second annular groove 51 through the feeding hole 52 during the rotation, thereby completing the connection between the columnar connecting part 122 and the connecting seat 5.

[0047] To prevent the wire from protruding and affecting the appearance, the length of the wire is equal to the circumference of the first annular groove 15. When the wire is fully embedded in the first annular groove and the second annular groove, a stable rotational fit is formed between the connecting seat and the columnar connecting part, while avoiding axial separation.

[0048] The bottom of the connecting seat 5 is also fitted with a rotating rod 53, and the hanging ring 2 is rotatably connected to the bottom of the rotating rod 53. The bottom of the rotating rod 53 is also provided with a fastening ring 54 to prevent the hanging ring 2 from falling off. Therefore, during assembly, before inserting the connecting seat 5 into the bottom of the columnar connecting part 122, the rotating rod 53 is first fitted onto the bottom of the connecting seat 5, and then the hanging ring 2 is fitted onto the lower end of the rotating rod 53 and rotatably connected to it. The fastening ring is then installed at the bottom of the rotating rod 53 to prevent the hanging ring from falling off along the axial direction of the rotating rod during use, thus ensuring the stability and safety of the connection structure.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hook and latch for easy opening and closing, the structure of which includes: The hook body (1) and the hanging ring (2) rotatably connected to the bottom of the hook body (1) are characterized in that: the hook body (1) includes a hook part (11) and a columnar connecting part (12) from top to bottom. The hook part (11) forms an opening for locking external objects. The columnar connecting part (12) is covered with a fastening member (3) for controlling the opening and closing of the opening. The fastening member (3) includes a connecting cylinder (31) that slides up and down along the columnar connecting part (12). The top of the connecting cylinder (31) has a fastening tooth (32) that cooperates with the opening. The side wall of the connecting cylinder (31) has a limiting hole (33) that communicates with the inner side. The columnar connecting part (12) is provided with a locking mechanism (4) for cooperating with the limiting hole (33). When the fastening tooth (32) abuts against the top of the opening, the locking mechanism (4) cooperates with the limiting hole (33) to fix it.

2. The hook and clasp for easy opening and closing as described in claim 1, characterized in that: The columnar connecting part (12) has mounting holes (13) that pass through both the front and rear ends; the locking mechanism (4) includes a spring (41) provided in the mounting hole (13) and a stop (42) that abuts against both ends of the spring (41); the limiting holes (33) are respectively provided at the front and rear ends of the connecting cylinder (31) and have a diameter smaller than that of the stop (42).

3. The hook and clasp for easy opening and closing as described in claim 2, characterized in that: A groove (14) is formed below the opening of the hook (11) for the engaging teeth (32) to slide up and down.

4. The hook and clasp for easy opening and closing as described in claim 1, characterized in that: The bottom end of the hook (11) is formed with a locking step for restricting the upward movement of the connecting cylinder (31), and the bottom end of the hook (11) is a cylindrical structure; the outer wall of the connecting cylinder (31) is a cylindrical structure with the same diameter as the bottom end of the hook (11).

5. A hook and clasp for easy opening and closing as described in claim 2, characterized in that: The top of the engaging tooth (32) has a smooth bevel that engages with the top of the opening of the hook (11).

6. A hook and clasp for easy opening and closing as described in claim 2, characterized in that: The stop (42) is a steel ball.

7. A hook and clasp for easy opening and closing as described in claim 1, characterized in that: The outer wall of the connecting cylinder (31) also has an arc-shaped groove corresponding to the limiting hole (33).

8. A hook and clasp for easy opening and closing as described in claim 1, characterized in that: The bottom of the columnar connecting part (12) is fitted with a connecting seat (5), and the hanging ring (2) is rotatably connected to the bottom of the connecting seat (5).

9. A hook and clasp for easy opening and closing as described in any one of claims 1-8, characterized in that: The columnar connecting part (12) is connected to the connecting seat (5) at one end, forming a first annular groove (15). The inner side of the connecting seat (5) is formed with a second annular groove (51) corresponding to the first annular groove (15). The surface of the connecting seat (5) is provided with a feeding hole (52) that is connected through the second annular groove (51). The diameter of the feeding hole (52) is less than or equal to the height of the second annular groove (51). The first annular groove (15) of the columnar connecting part (12) is formed with a plug hole (16) corresponding to the feeding hole (52). A wire (7) is installed between the first annular groove (15) and the second annular groove (51) through the feeding hole (52).

10. A hook and clasp for easy opening and closing as described in claim 9, characterized in that: The bottom of the connecting seat (5) is also fitted with a rotating rod (53), and the hanging ring (2) is rotatably connected to the bottom of the rotating rod (53). The bottom of the rotating rod (53) is also provided with a fastening ring (54) to prevent the hanging ring (2) from falling off.

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