Large-opening safety hook
By designing a large opening safety hook with a moving hook body and a locking mechanism, the problem of the traditional safety hook having a small and overall large opening is solved, and the large opening and compact size are achieved, and the locking reliability is improved.
Patent Information
- Application Number
- CN202422170811.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-04
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-04
AI Technical Summary
The opening size of traditional safety hooks is small, limiting their application in special occasions, and the overall size will increase significantly when trying to increase the opening size.
A large opening safety hook is designed, through the hinge structure and locking mechanism between the moving hook body and the fixed hook body, the moving hook body is flipped between the two positions, maximizing the opening size, while maintaining the overall compact volume.
While achieving a large opening, the compact size of the safety hook is ensured, its application capability is enhanced in special occasions, and the locking reliability is ensured through the locking mechanism.
Smart Images
Figure CN223019181U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of safety hooks, and in particular to a large-opening safety hook. Background Art
[0002] A safety hook (carabiner), also called a "master lock", is the most commonly used connecting tool for connecting ropes, slings, and anchor points, equipment, etc.
[0003] The opening size of traditional safety hooks is often small, and there are often great limitations when used in some special occasions; if a safety hook with a larger opening is selected, it will cause a significant increase in its overall size, especially for conventional "8"-shaped safety hooks and "D"-shaped safety hooks. Summary of the Utility Model
[0004] Based on the above problems, the purpose of the utility model is to provide a large-opening safety hook with a large opening and reliable locking, while ensuring the opening size and minimizing the overall size as much as possible.
[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:
[0006] A large-opening safety hook includes a hook handle and a fixed hook body connected to the hook handle. The fixed hook body is in the shape of a C-shaped open ring and forms a main insertion port at the opening. The two sides of the main insertion port respectively correspond to the head end and the tail end of the fixed hook body; it also includes a moving hook body. The moving hook body is in the shape of a C-shaped open ring and forms a secondary insertion port at the opening. The two sides of the secondary insertion port respectively correspond to the head end and the tail end of the moving hook body; the middle position between the head end and the tail end of the moving hook body is hinged to the tail end of the fixed hook body so that the moving hook body can flip between a first position and a second position relative to the fixed hook body. When the moving hook body is in the first position, its secondary insertion port is exposed as the moving hook body swings outwards, and at the same time, a part of the hook body of the moving hook body is located in the main insertion port of the fixed hook body. When the moving hook body is in the second position, the main insertion port of the fixed hook body is blocked by the moving hook body, and the fixed hook body and the moving hook body are closed to form a circular ring shape; it also includes a locking mechanism installed on the fixed hook body or the hook handle. The moving hook body is provided with a locking part that is adapted to be locked with the locking mechanism when it swings to the second position.
[0007] In the above structure, when the moving hook body is in the first position, the object to be fixed is placed into the opening of the moving hook body through the secondary insertion port, and then the moving hook body is swung to the second position. At this time, the object to be fixed enters the opening of the fixed hook body through the main insertion port of the fixed hook body along with the moving hook body. At the same time, the moving hook body and the fixed hook body overlap and close each other to form a ring shape, so that the main insertion port and the secondary insertion port are closed to achieve the purpose of locking; since both the fixed hook body and the moving hook body are in the shape of a ring, and the main insertion port and the secondary insertion port are opened on their rings, the opening size can be maximized, and while achieving a large opening, a compact volume is ensured; the locking mechanism is adapted to the locking part to fix the moving hook body and prevent it from unlocking.
[0008] The utility model is further configured such that the main inlet opening degree of the fixed hook body is between 90 degrees and 160 degrees in the circumferential direction; the auxiliary inlet opening degree of the movable hook body is between 90 degrees and 160 degrees in the circumferential direction.
[0009] In the above structure, the main entrance of the fixed hook body occupies 120 degrees in the 360-degree circumferential direction; the auxiliary entrance of the movable hook body occupies 120 degrees in the 360-degree circumferential direction; while ensuring the size of the main entrance and the auxiliary entrance, the overall strength is optimized.
[0010] The utility model is further configured that an accommodating groove is opened on the inner ring wall of the fixed hook body, the movable hook body is hinged to the accommodating groove and swings into the accommodating groove to overlap with the fixed hook body when it reaches the second position.
[0011] In the above structure, when the movable hook body reaches the second position, the two overlap each other, and the overall rigidity of the movable hook body is further stabilized by the accommodating groove.
[0012] The utility model is further configured such that the hook handle and the head end of the fixed hook body are arranged 180 degrees apart in the circumferential direction of the fixed hook body; a main interference slope is provided between the head end face of the fixed hook body and the inner annular surface of the fixed hook body; a secondary interference slope is provided between the head end face of the movable hook body and the outer annular surface of the movable hook body, and when the movable hook body is in the second position, the secondary interference slope is abutted against the main interference slope.
[0013] In the above structure, when subjected to force, the movable hook body can transmit the force to the main conflicting inclined surface through the auxiliary conflicting inclined surface, so that the fixed hook body can assist in being subjected to the force.
[0014] The utility model is further configured that the locking mechanism includes a locking hook, and when the movable hook body is located at the second position, the locking portion and the locking hook are adapted to lock to prevent the movable hook body from swinging toward the first position.
[0015] In the above structure, the locking hook is used to match with the locking portion to lock the movable hook body.
[0016] The utility model is further configured such that the locking hook is hinged on the hook handle, and the locking hook is divided into two groups, which are respectively located on both sides of the hook handle and are arranged 180 degrees apart from each other with the center of the hook handle as the axis; when the movable hook body is in the second position, the locking parts are located on both sides thereof and correspond to the hook handle.
[0017] In the above structure, when the movable hook body swings from the second position to the first position, its locking portion moves toward the main abutting inclined surface, and the locking hook is locked with the locking portion to restrict the movable hook body from being unlocked.
[0018] The utility model is further configured that an anti-unlocking torsion spring is provided between the locking hook and the hook handle.
[0019] In the above structure, the anti-unlocking torsion spring can keep the locking hook in the locked state all the time.
[0020] The utility model is further arranged such that an unlocking torsion spring for pushing the moving hook body from the second position towards the first position is provided between the moving hook body and the fixed hook body.
[0021] In the above structure, when the locking hook is unlocked, it can drive the moving hook body to swing from the second position towards the first position.
[0022] The utility model is further arranged such that a hanging ear adapter that can rotate relative to the axis of the hook handle is provided at one end of the hook handle far from the fixed hook body; a hanging ear is hinged to the hanging ear adapter.
[0023] In the above structure, the hanging ear adapter can enable the hanging ear to rotate along the axis of the hook handle.
[0024] The utility model is further arranged such that the axis of the hinge shaft between the hanging ear and the hanging ear adapter intersects with the axis of the hinge shaft between the hanging ear adapter and the hook handle at 90 degrees.
[0025] In the above structure, the hanging ear can swing relative to the hanging ear adapter, further improving the degree of freedom of the hanging ear.
[0026] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0027] The utility model has a larger opening and stronger comprehensiveness, and at the same time, a smaller volume. When the moving hook body is in the first position, the object to be fixed is placed into the opening of the moving hook body through the secondary inlet, and then the moving hook body is swung to the second position. At this time, the object to be fixed enters the opening of the fixed hook body through the main inlet of the fixed hook body along with the moving hook body. At the same time, the moving hook body and the fixed hook body overlap and are mutually closed to form a ring, so that the main inlet and the secondary inlet are closed to achieve the purpose of locking; since both the fixed hook body and the moving hook body are annular, and the main inlet and the secondary inlet are opened on their rings, the opening size can reach the maximum, while ensuring its compact volume while achieving a large opening; the locking mechanism is adapted to the locking part to fix the moving hook body and prevent it from being unlocked. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a three-dimensional structural schematic diagram of the moving hook body of the utility model when it is in the second position;
[0029] Figure 2 It is a three-dimensional structural schematic diagram of the moving hook body of the utility model when it is in the first position;
[0030] Figure 3 It is a three-dimensional structural schematic diagram of the moving hook body of the utility model when it is in the second position;
[0031] Figure 4Schematic three-dimensional structure diagram of the moving hook body of the present utility model when it is in the first position;
[0032] Figure 5 Exploded three-dimensional structure diagram of the present utility model;
[0033] In the figure: 10, hook handle; 11, fixed hook body; 111, main inlet; 112, placement groove; 113, main contact inclined surface; 12, moving hook body; 121, secondary inlet; 122, locking part; 123, secondary contact inclined surface; 124, unlocking torsion spring; 13, locking mechanism; 131, locking hook; 132, anti-unlocking torsion spring; 14, hanger adapter; 141, hanger. Specific embodiments
[0034] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. The present utility model will be further described in conjunction with the accompanying drawings and embodiments:
[0035] Refer to Figures 1 to 5 As shown, a large-opening safety hook includes a hook handle 10 and a fixed hook body 11 connected to the hook handle 10. The fixed hook body 11 is in a C-shaped open ring shape and forms a main inlet 111 at the opening. The two sides of the main inlet 111 respectively correspond to the head end a1 and the tail end a2 of the fixed hook body 11;
[0036] It further includes a moving hook body 12. The moving hook body 12 is in a C-shaped open ring shape and forms a secondary inlet 121 at the opening. The two sides of the secondary inlet 121 respectively correspond to the head end b1 and the tail end b2 of the moving hook body 12; The middle section between the head end b1 and the tail end b2 of the moving hook body 12 is hinged to the tail end a2 of the fixed hook body 11 so that the moving hook body 12 can flip between a first position and a second position relative to the fixed hook body 11. When the moving hook body 12 is in the first position, its secondary inlet 121 is exposed as the moving hook body 12 swings outwards, and at the same time, a part of the hook body of the moving hook body 12 is located in the main inlet 111 of the fixed hook body 11. When the moving hook body 12 is in the second position, the main inlet 111 of the fixed hook body 11 is blocked by the moving hook body 12, and the fixed hook body 11 and the moving hook body 12 are closed to form a circular ring shape;
[0037] It further includes a locking mechanism 13 installed on the fixed hook body 11 or the hook handle 10. The moving hook body 12 is provided with a locking part 122 that is adapted to be locked with the locking mechanism 13 when it swings to the second position.
[0038] In the above structure, when the moving hook body 12 is in the first position, the object to be fixed is placed into the opening of the moving hook body 12 through the secondary inlet 121, and then the moving hook body 12 is swung to the second position. At this time, the object to be fixed enters the opening of the fixed hook body 11 through the main inlet 111 of the fixed hook body 11 along with the moving hook body 12. At the same time, the moving hook body 12 and the fixed hook body 11 overlap each other to form a closed ring, closing the main inlet 111 and the secondary inlet 121 to achieve the purpose of locking; since both the fixed hook body 11 and the moving hook body 12 are annular, and the main inlet 111 and the secondary inlet 121 are opened on their rings, the size of their openings can be maximized, ensuring a compact volume while achieving a large opening; the locking mechanism 13 is adapted to the locking portion 122 to fix the moving hook body 12 and prevent it from unlocking.
[0039] In this embodiment, the degree of opening of the main inlet 111 of the fixed hook body 11 is between 90 degrees and 160 degrees in its circumferential direction; the degree of opening of the secondary inlet 121 of the moving hook body 12 is between 90 degrees and 160 degrees in its circumferential direction.
[0040] In the above structure, the degree of opening of the main inlet 111 of the fixed hook body 11 is 120 degrees in the 360 - degree circumferential direction of the fixed hook body 11; the degree of opening of the secondary inlet 121 of the moving hook body 12 is 120 degrees in the 360 - degree circumferential direction of the moving hook body 12; while ensuring the sizes of the main inlet 111 and the secondary inlet 121, the overall strength is optimized.
[0041] In this embodiment, a placement groove 112 is provided on the inner wall of the fixed hook body 11. The moving hook body 12 is hinged to the placement groove 112 and swings into the placement groove 112 to overlap with the fixed hook body 11 when it reaches the second position.
[0042] In the above structure, when the moving hook body 12 reaches the second position, the two overlap each other, and the overall rigidity of the moving hook body 12 is further stabilized through the placement groove 112.
[0043] In this embodiment, the hook handle 10 and the first end a1 of the fixed hook body 11 are arranged at an interval of 180 degrees in the circumferential direction of the fixed hook body 11; a main contact inclined surface 113 is provided between the end surface of the first end a1 of the fixed hook body 11 and the inner ring surface of the fixed hook body 11; a secondary contact inclined surface 123 is provided between the end surface of the first end b1 of the moving hook body 12 and the outer ring surface of the moving hook body 12. When the moving hook body 12 is in the second position, the secondary contact inclined surface 123 abuts against the main contact inclined surface 113.
[0044] In the above structure, when stressed, the moving hook body 12 can transmit the force to the main contact inclined surface 113 through the secondary contact inclined surface 123, enabling the fixed hook body 11 to assist in bearing the force together.
[0045] In this embodiment, the locking mechanism 13 includes a locking hook 131. When the moving hook body 12 is in the second position, the locking portion 122 is adapted to be locked with the locking hook 131 to prevent the moving hook body 12 from swinging in the direction of the first position.
[0046] In the above structure, the locking hook 131 is used to be adapted to lock the moving hook body 12 with the locking portion 122.
[0047] In this embodiment, the locking hook 131 is hinged to the hook handle 10. There are two sets of locking hooks 131, which are respectively located on both sides of the hook handle 10 and are arranged at an interval of 180 degrees from each other with the center of the hook handle 10 as the axis; when the moving hook body 12 is in the second position, the locking portions 122 are located on both sides thereof and correspond to the hook handle 10.
[0048] In the above structure, when the moving hook body 12 swings in the direction of the first position from the second position, its locking portion 122 moves in the direction of the main contact inclined surface 113, and the locking hook 131 is locked with the locking portion 122 to limit the unlocking of the moving hook body 12.
[0049] In this embodiment, an anti-unlocking torsion spring 132 is provided between the locking hook 131 and the hook handle 10.
[0050] In the above structure, the anti-unlocking torsion spring 132 can keep the locking hook 131 in a locked state all the time.
[0051] In this embodiment, an unlocking torsion spring 124 for pushing the moving hook body 12 from the second position in the direction of the first position is provided between the moving hook body 12 and the fixed hook body 11.
[0052] In the above structure, when the locking hook 131 is unlocked, it can drive the moving hook body 12 to swing from the second position in the direction of the first position.
[0053] In this embodiment, a hanging ear adapter 14 that can rotate relative to the axis of the hook handle 10 is provided at one end of the hook handle 10 away from the fixed hook body 11; a hanging ear 141 is hinged to the hanging ear adapter 14.
[0054] In the above structure, the hanging ear adapter 14 can enable the hanging ear 141 to rotate along the axis of the hook handle 10.
[0055] In this embodiment, the axis of the hinge between the hanging ear 141 and the hanging ear adapter 14 intersects the axis of the hinge between the hanging ear adapter 14 and the hook handle 10 at 90 degrees.
[0056] In the above structure, the hanging ear 141 can swing relative to the hanging ear adapter 14, further improving the freedom degree of the hanging ear 141.
[0057] Advantages of the present utility model: When the moving hook body 12 is in the first position, the object to be fixed is placed into the opening of the moving hook body 12 through the secondary inlet 121. Then, the moving hook body 12 is swung to the second position. At this time, the object to be fixed enters the opening of the fixed hook body 11 through the main inlet 111 of the fixed hook body 11 along with the moving hook body 12. At the same time, the moving hook body 12 and the fixed hook body 11 overlap each other to form a closed ring, so that the main inlet 111 and the secondary inlet 121 are closed to achieve the purpose of locking. Since both the fixed hook body 11 and the moving hook body 12 are annular, and the main inlet 111 and the secondary inlet 121 are opened on their rings, the size of their openings can be maximized, ensuring a compact volume while achieving a large opening. The locking mechanism 13 is adapted to the locking portion 122 to fix the moving hook body 12 and prevent it from being unlocked.
[0058] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of protection required by the present utility model. The scope of protection required by the present utility model is defined by the appended claims and their equivalents.
Claims
1. A large opening safety hook, characterized in that: It comprises a hook handle (10) and a fixed hook body (11) connected to the hook handle (10), wherein the fixed hook body (11) is in a C-shaped open ring shape and forms a main entrance (111) at the opening, and the two sides of the main entrance (111) correspond to the head end and the tail end of the fixed hook body (11) respectively; It also comprises a movable hook body (12), the movable hook body (12) is in a C-shaped open ring shape and forms a secondary inlet (121) at the opening, and the two sides of the secondary inlet (121) correspond to the head end and the tail end of the movable hook body (12) respectively; the middle section between the head end and the tail end of the movable hook body (12) is hinged to the tail end of the fixed hook body (11) so that the movable hook body (12) can be flipped between a first position and a second position relative to the fixed hook body (11); when the movable hook body (12) is located at the first position, its secondary inlet (121) is exposed with the movable hook body (12) and part of the hook body of the movable hook body (12) is located in the main inlet (111) of the fixed hook body (11); when the movable hook body (12) is located at the second position, the main inlet (111) of the fixed hook body (11) is blocked by the movable hook body (12) so that the fixed hook body (11) and the movable hook body (12) are closed to form a full circular ring; It also includes a locking mechanism (13) installed on the fixed hook body (11) or the hook handle (10), and the movable hook body (12) is provided with a locking portion (122) adapted to lock with the locking mechanism (13) when the movable hook body (12) swings to the second position.
2. A large opening safety hook according to claim 1, characterized in that: The main inlet (111) of the fixed hook body (11) is opened at an angle between 90 and 160 degrees in the circumferential direction; the auxiliary inlet (121) of the movable hook body (12) is opened at an angle between 90 and 160 degrees in the circumferential direction.
3. A large opening safety hook according to claim 1, characterized in that: An accommodating groove (112) is provided on the inner ring wall of the fixed hook body (11), and the movable hook body (12) is hingedly connected to the accommodating groove (112) and swings into the accommodating groove (112) to overlap with the fixed hook body (11) when it reaches the second position.
4. A large opening safety hook according to claim 3, characterized in that: The hook handle (10) and the head end of the fixed hook body (11) are arranged 180 degrees apart in the circumferential direction of the fixed hook body (11); a main abutting inclined surface (113) is provided between the head end surface of the fixed hook body (11) and the inner annular surface of the fixed hook body (11); a secondary abutting inclined surface (123) is provided between the head end surface of the movable hook body (12) and the outer annular surface of the movable hook body (12); when the movable hook body (12) is located at the second position, the secondary abutting inclined surface (123) abuts against the main abutting inclined surface (113).
5. A large opening safety hook according to claim 4, characterized in that: The locking mechanism (13) comprises a locking hook (131), and when the movable hook body (12) is located at the second position, the locking portion (122) and the locking hook (131) are adapted to lock with each other to prevent the movable hook body (12) from swinging toward the first position.
6. A large opening safety hook according to claim 5, characterized in that: The locking hook (131) is hinged on the hook handle (10), and the locking hook (131) is divided into two groups, which are respectively located on both sides of the hook handle (10) and are arranged 180 degrees apart from each other with the center of the hook handle (10) as the axis; when the movable hook body (12) is located at the second position, the locking parts (122) are located on both sides thereof and correspond to the hook handle (10).
7. A large opening safety hook according to claim 6, characterized in that: An anti-unlocking torsion spring (132) is provided between the locking hook (131) and the hook handle (10).
8. A large opening safety hook according to claim 3, characterized in that: An unlocking torsion spring (124) is provided between the movable hook body (12) and the fixed hook body (11) for pushing the movable hook body (12) from the second position toward the first position.
9. A large opening safety hook according to claim 1, characterized in that: An end of the hook handle (10) away from the fixed hook body (11) is provided with a hook ear adapter (14) which is rotatable relative to the axis of the hook handle (10); the hook ear adapter (14) is hingedly connected with a hook ear (141).
10. A large opening safety hook according to claim 9, characterized in that: The axis of the hinged shaft between the hanging ear (141) and the hanging ear adapter (14) and the axis of the hinged shaft between the hanging ear adapter (14) and the hook handle (10) intersect at 90 degrees.