A safety hook

Abstract

The present invention discloses a safety hook, which relates to the field of security equipment. The safety hook includes: a limit hook, a locking buckle, a hook and an external fixing piece; the locking buckle is provided with a rotation hole and a locking hole, the locking hole is connected to the rotation hole, and the minimum aperture of the rotation hole is greater than or equal to the maximum aperture of the locking hole; a limit pin is provided at one end of the hook, the maximum width of the limit pin is less than or equal to the diameter of the rotation hole, and the minimum inner diameter of the limit pin is equal to the minimum inner diameter of the locking hole, and the limit pin is engaged in the rotation hole or the locking hole; the limit hook is fixedly connected to the locking buckle, and when the limit pin is set in the locking hole, the end of the hook away from the limit pin is connected to the limit hook, and the external fixing piece is connected to the end of the locking buckle away from the locking hole. This solves the technical problem in the prior art that there are significant safety hazards during the installation and disassembly of safety equipment.

Description

Technical Field

[0001] The present invention relates to the field of security equipment, and in particular to a safety hook. Background Art

[0002] Work at height is common in production, and for safety reasons, protective measures must be taken. Current protective measures primarily include safety ropes, safety belts, and fall arresters. To function, these devices must be manually secured to a stable and secure object. However, in practice, if the work platform is more than 2.5 meters above the ground, it's difficult for the average person to directly attach and secure the safety devices. Instead, a staircase must be erected to reach the platform and then secure the safety devices.

[0003] After completing a task, safety equipment must be removed before leaving the platform; otherwise, it will be impossible to remove the equipment after leaving. Therefore, currently, working at height presents significant safety risks: first, the staircases pose an instability risk, and second, workers lack safety equipment to support themselves while ascending and descending the stairs, posing a significant safety hazard. Therefore, it is necessary to improve existing technologies and propose more reasonable technical solutions to address these issues. Summary of the Invention

[0004] The present invention provides a safety hook, which is used to solve the technical problem in the prior art that safety equipment has great potential safety hazards during installation and removal.

[0005] The embodiment of the present invention provides a safety hook, which includes: a limit hook, a locking buckle, a hook and an external fixing member;

[0006] The locking buckle is provided with a rotating hole and a locking hole, the locking hole is connected to the rotating hole, and the minimum aperture of the rotating hole is greater than or equal to the maximum aperture of the locking hole;

[0007] A limit pin is provided at one end of the hook, the maximum width of the limit pin is less than or equal to the diameter of the rotating hole, and the minimum inner diameter of the limit pin is equal to the minimum inner diameter of the locking hole, and the limit pin is engaged in the rotating hole or the locking hole;

[0008] The limit hook is fixedly connected to the locking buckle. When the limit pin is arranged in the locking hole, the end of the hook away from the limit pin is connected to the limit hook, and the external fixing piece is connected to the end of the locking buckle away from the locking hole.

[0009] During use, a stop pin, located at one end of the hook, is positioned within the rotation hole. The hook is rotated to form an opening between the locking opening and the stop hook. The locking buckle is lifted by abutting against an external fixing member until the opening reaches a predetermined external fixing rod or other fixed point. The end of the hook closest to the stop hook is then hooked on the external fixing rod. After the hook is attached to the external fixing rod, the external fixing member is pulled downward to force the stop pin into the locking hole. During the downward pull, the hook, squeezed by the stop pin and the locking hole, moves toward the stop hook, completely enclosing the external fixing rod. During use, the stop pin does not disengage from the locking hole due to the weight of the object being carried. Thus, the stop hook and the hook are tightly connected, ensuring safety and stability during construction. Furthermore, after use, the external fixing member can be pressed upward to force the stop pin from disengaging from the locking hole under the action of the upper hook. After the stop pin is disengaged from the locking hole, the hook can be gently rotated to disengage the stop hook from the hook, forming an opening through which the hook can be removed. This solves the technical problem in the prior art that there are significant safety hazards during the installation and disassembly of safety equipment.

[0010] Preferably, the locking buckle is also provided with a limiting hole, which is provided on the side of the locking buckle. The limiting hole is connected to the locking hole and the rotating hole, and the hook is connected to the limiting pin after passing through the limiting hole; the limiting hole is used to limit the rotation angle of the hook in the rotating hole, and to limit the total lifting height of the hook in the rotating hole and the locking hole.

[0011] By providing a limit hole, the rotation angle of the hook in the rotation hole can be limited to prevent the hook from rotating too much and becoming difficult to hook on the external fixing rod; at the same time, the total lifting height of the hook in the rotation hole and the locking hole can be limited to facilitate the entry of the limit pin into the locking hole. It is clear that the locking hole can be a square hole, the rotation hole can be a round hole, and the limit pin can be a square hole. The maximum width of the limit pin is less than or equal to the diameter of the rotation hole, and the minimum inner diameter of the limit pin is equal to the minimum inner diameter of the locking hole. The limit pin is engaged with the rotation hole or the locking hole, making it easy for the limit pin to enter the locking hole and lock and rotate in the rotation hole.

[0012] Preferably, the locking buckle is further provided with a lock buckle, which is used to restrict the limit pin from entering the locking hole.

[0013] A lock buckle is provided to restrict the limit pin in the locking hole; the function of the lock buckle is mainly to play a certain supporting role, increasing the difficulty of the limit pin to be disengaged from the locking hole, but when the force is greater than a specific value under the action of external force, the limit pin can be disengaged from the lock buckle.

[0014] Preferably, the lock buckle includes a reset spring and a lock tongue. The lock buckle is provided with a locking opening, which is connected to the locking hole. The lock tongue is connected to the bottom of the locking opening through the reset spring, and one end of the lock tongue is captured in the locking hole.

[0015] Among them, the lock includes a return spring and a lock tongue, which play a role in supporting and fixing the limit pin; of course, it can also be other locking structures to achieve the effect of locking the limit pin and allowing the limit pin to be separated from the lock under a certain external force.

[0016] Preferably, the limiting pin is provided with a locking hole matching the locking tongue. When the limiting pin is arranged in the locking hole, one end of the locking tongue extends into the locking hole.

[0017] By providing the locking hole, one end of the lock tongue extends into the locking hole, further increasing the difficulty of the limit pin being separated from the locking hole.

[0018] Preferably, a clamping piece is provided at one end of the limit hook close to the hook, and a clamping head is provided at one end of the hook close to the limit hook. After the limit pin enters the locking hole, the clamping piece is connected to the clamping head.

[0019] By providing the engaging member, the connection between the limit hook and the hook can be made more stable, and the lock tongue can be stably connected to the external fixing rod. Preferably, the engaging member includes two groups of engaging protrusions, and the engaging head is engaged between the two groups of engaging protrusions.

[0020] Preferably, the engaging member includes two groups of engaging protrusions, and the engaging head is engaged between the two groups of engaging protrusions.

[0021] Preferably, the external fixing piece is further provided with a device hole, which is used to connect to an external safety device. By providing the device hole, it is convenient to connect to the external safety device.

[0022] Preferably, the safety hook further comprises an external telescopic rod, the external fixing member is provided with a connection hole, and the top of the external telescopic rod is provided with a connection buckle that matches the connection hole. By providing the external telescopic rod, the length of the telescopic rod can be adjusted according to the installation height, and the hook is connected to the external fixing rod.

[0023] Preferably, the connecting hole is obliquely opened on the external fixing member. The connecting hole is obliquely opened on the external fixing rod, which is convenient for separating the external fixing member from the external telescopic rod and more convenient when buckling.

[0024] The safety hook proposed in the embodiment of the present invention has the following technical effects:

[0025] During use, a stop pin at one end of the hook is positioned within the rotation hole. The hook is rotated to form an opening between the locking opening and the stop hook. The locking buckle is lifted by abutting against an external fixing member until the opening reaches a predetermined external fixing rod or other fixing point. The end of the hook closest to the stop hook is then hooked on the external fixing rod. After the hook is hooked on the external fixing rod, the external fixing member is pulled downward to force the stop pin into the locking hole. During the downward pull, the hook, squeezed by the stop pin and the locking hole, moves toward the stop hook, fully engaging the external fixing rod. During use, the stop pin does not disengage from the locking hole due to the weight of the object being carried. Thus, the stop hook and the hook are tightly connected, ensuring safety and stability during construction. Furthermore, after use, the external fixing member can be pressed upward to force the stop pin from disengaging from the locking hole due to the upper force. After the stop pin is disengaged from the locking hole, the hook can be gently rotated to disengage the stop hook from the hook, forming an opening, through which the hook can be removed. The safety equipment can be installed before the aerial work and removed after the work is completed, thereby solving the technical problem of the existing technology that there are great safety hazards in the process of installing and removing the safety equipment.

[0026] In summary, the safety hook provided by the embodiment of the present invention relates to the field of security equipment. The safety hook includes: a limit hook, a locking buckle, a hook and an external fixing piece; the locking buckle is provided with a rotation hole and a locking hole, the locking hole is connected to the rotation hole, and the minimum aperture of the rotation hole is greater than or equal to the maximum aperture of the locking hole; a limit pin is provided at one end of the hook, the maximum width of the limit pin is less than or equal to the diameter of the rotation hole, and the minimum inner diameter of the limit pin is equal to the minimum inner diameter of the locking hole, and the limit pin is engaged in the rotation hole or the locking hole; the limit hook is fixedly connected to the locking buckle, and when the limit pin is provided in the locking hole, the end of the hook away from the limit pin is connected to the limit hook, and the external fixing piece is connected to the end of the locking buckle away from the locking hole. In this way, the technical problem of the existing technology that there are large safety hazards in the installation and disassembly process of safety equipment is solved.

[0027] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are specifically listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference numerals are used throughout the accompanying drawings to denote the same components. In the accompanying drawings:

[0029] Figure 1 This is a schematic diagram of the structure of the safety hook when it is locked;

[0030] Figure 2 This is the left side view of the safety hook when locked;

[0031] Figure 3 This is the right side view of the safety hook when locked;

[0032] Figure 4 This is a structural diagram of the safety hook when it is opened;

[0033] Figure 5 This is a partial enlarged view of the safety hook;

[0034] Figure 6 It is a side view of the external telescopic rod;

[0035] Figure 7 It is a side view of the external telescopic rod.

[0036] Icons: 10-safety hook; 11-limit hook; 12-locking buckle; 13-hook; 14-external fixing piece; 121-rotation hole; 122-locking hole; 131-limit pin; 123-limiting hole; 15-locking buckle; 151-reset spring; 152-locking tongue; 124-locking mouth; 132-locking hole; 111-locking piece; 133-locking head; 112-locking protrusion; 141-equipment hole; 16-external telescopic rod; 142-connecting hole. DETAILED DESCRIPTION

[0037] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0038] See also Figures 1 to 6 , the embodiment of the present invention proposes a safety hook 10, the safety hook 10 includes: a limit hook 11, a locking buckle 12, a hook 13 and an external fixing member 14;

[0039] The locking buckle 12 is provided with a rotation hole 121 and a locking hole 122 . The locking hole 122 is connected to the rotation hole 121 , and the minimum aperture of the rotation hole 121 is greater than or equal to the maximum aperture of the locking hole 122 .

[0040] A limit pin 131 is provided at one end of the hook 13. The maximum width of the limit pin 131 is less than or equal to the diameter of the rotation hole 121, and the minimum inner diameter of the limit pin 131 is equal to the minimum inner diameter of the locking hole 122. The limit pin 131 is engaged in the rotation hole 121 or the locking hole 122.

[0041] The limiting hook 11 is fixedly connected to the locking buckle 12. When the limiting pin 131 is arranged in the locking hole 122, the end of the hook 13 away from the limiting pin 131 is connected to the limiting hook 11, and the external fixing member 14 is connected to the end of the locking buckle 12 away from the locking hole 122.

[0042] During use, the stop pin 131 at one end of the hook 13 is positioned within the rotation hole 121. The hook 13 is rotated to form an opening between the locking opening and the stop hook 11. The locking buckle 12 is lifted by abutting against the external fixing member 14 until the opening reaches a predetermined external fixing rod or other fixing point. The end of the hook 13 closest to the stop hook 11 is then hooked onto the external fixing rod. After the hook 13 is attached to the external fixing rod, the external fixing member 14 is pulled downward to force the stop pin 131 into the locking hole 122. During the downward pull, the hook 13, squeezed by the stop pin 131 and the locking hole 122, moves toward the stop hook 11, completely enclosing the external fixing rod. During use, the weight of the object being carried prevents the stop pin 131 from disengaging from the locking hole 122, effectively maintaining a tight connection between the stop hook 11 and the hook 13, ensuring safety and stability during installation. At the same time, after use, the external fixing member 14 can be pushed upward, and the limiting pin 131 is disengaged from the locking hole 122 under the force of the upper hook 13. After the limiting pin 131 is disengaged from the locking hole 122, the hook 13 can be slightly rotated to separate the limiting hook 11 from the hook 13 to form an opening, through which the hook 13 can be removed. This solves the technical problem of the existing technology that there are significant safety hazards during the installation and removal of safety equipment.

[0043] Preferably, the locking buckle 12 is also provided with a limiting hole 123, which is provided on the side of the locking buckle 12. The limiting hole 123 is connected with the locking hole 122 and the rotating hole 121. The hook 13 passes through the limiting hole 123 and is connected with the limiting pin 131; the limiting hole 123 is used to limit the rotation angle of the hook 13 in the rotating hole 121, and to limit the total lifting height of the hook 13 in the rotating hole 121 and the locking hole 122.

[0044] By providing the limiting hole 123, the rotation angle of the hook 13 in the rotating hole 121 can be limited to prevent the hook 13 from rotating too much and making it difficult for the hook 13 to be hung on the external fixing rod; at the same time, the total lifting height of the hook 13 in the rotating hole 121 and the locking hole 122 can be limited to facilitate the entry of the limiting pin 131 into the locking hole 122. It is clear that the locking hole 122 can be a square hole, the rotating hole 121 is a round hole, and the limiting pin 131 is a square hole. The maximum width of the limiting pin 131 is less than or equal to the diameter of the rotating hole 121, and the minimum inner diameter of the limiting pin 131 is equal to the minimum inner diameter of the locking hole 122. The limiting pin 131 is engaged in the rotating hole 121 or the locking hole 122, so that the limiting pin 131 can be locked in the locking hole 122 and rotate in the rotating hole 121.

[0045] Preferably, the locking buckle 12 is further provided with a locking buckle 15 , and the locking buckle 15 is used to restrict the limiting pin 131 from entering the locking hole 122 .

[0046] The lock buckle 15 is provided to limit the limit pin 131 in the locking hole 122; wherein, the function of the lock buckle 15 is mainly to play a certain supporting role, increasing the difficulty of the limit pin 131 to be disengaged from the locking hole 122, but when the force is greater than a specific value under the action of external force, the limit pin 131 can be disengaged from the lock buckle 15.

[0047] Preferably, the lock buckle 15 includes a reset spring 151 and a lock tongue 152. The locking buckle 12 is provided with a locking opening 124, which is communicated with the locking hole 122. The lock tongue 152 is connected to the bottom of the locking opening 124 through the reset spring 151, and one end of the lock tongue 152 is captured in the locking hole 122.

[0048] Among them, the lock buckle 15 includes a return spring 151 and a lock tongue 152, which play a role in supporting and fixing the limit pin 131; of course, it can also be other locking structures to achieve the effect of locking the limit pin 131 and allowing the limit pin 131 to be separated from the lock buckle 15 under a certain external force.

[0049] Preferably, the limiting pin 131 is provided with a locking hole 132 matching the locking tongue 152 . When the limiting pin 131 is disposed in the locking hole 122 , one end of the locking tongue 152 extends into the locking hole 132 .

[0050] By providing the locking hole 132 , one end of the locking tongue 152 extends into the locking hole 132 , further increasing the difficulty of the limiting pin 131 being separated from the locking hole 122 .

[0051] Preferably, a locking member 111 is provided at one end of the limiting hook 11 close to the hook 13 , and a locking head 133 is provided at one end of the hook 13 close to the limiting hook 11 . After the limiting pin 131 enters the locking hole 122 , the locking member 111 is connected to the locking head 133 .

[0052] By providing the engaging member 111, the connection between the limit hook 11 and the hook 13 can be more stable, and the locking tongue 152 can be stably connected to the external fixing rod. Preferably, the engaging member 111 includes two sets of engaging protrusions 112, and the engaging head 133 is engaged between the two sets of engaging protrusions 112.

[0053] Preferably, the external fixing member 14 is further provided with a device hole 141, and the device hole 141 is used to connect with an external safety device. By providing the device hole 141, it is convenient to connect with the external safety device.

[0054] Preferably, the safety hook 10 further includes an external telescopic rod 16, the external fixing member 14 is provided with a connection hole 142, and the top of the external telescopic rod 16 is provided with a connection buckle that matches the connection hole 142. By providing the external telescopic rod 16, the length of the telescopic rod 16 can be adjusted according to the installation height, and the hook 13 is connected to the external fixing rod.

[0055] Preferably, the connecting hole 142 is obliquely opened on the external fixing member 14. The connecting hole 142 is obliquely opened on the external fixing rod, which facilitates the separation of the external fixing member 14 from the external telescopic rod 16 and is more convenient when buckling.

[0056] In summary, the safety hook provided by the embodiment of the present invention relates to the field of security equipment. The safety hook includes: a limit hook, a locking buckle, a hook and an external fixing piece; the locking buckle is provided with a rotation hole and a locking hole, the locking hole is connected to the rotation hole, and the minimum aperture of the rotation hole is greater than or equal to the maximum aperture of the locking hole; a limit pin is provided at one end of the hook, the maximum width of the limit pin is less than or equal to the diameter of the rotation hole, and the minimum inner diameter of the limit pin is equal to the minimum inner diameter of the locking hole, and the limit pin is engaged in the rotation hole or the locking hole; the limit hook is fixedly connected to the locking buckle, and when the limit pin is provided in the locking hole, the end of the hook away from the limit pin is connected to the limit hook, and the external fixing piece is connected to the end of the locking buckle away from the locking hole. In this way, the technical problem of the existing technology that there are large safety hazards in the installation and disassembly process of safety equipment is solved.

[0057] In short, the above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A safety hook, characterized in that: The safety hook includes: a limit hook, a locking buckle, a hook and an external fixing piece; The locking buckle is provided with a rotation hole and a locking hole, the locking hole is connected to the rotation hole, and the minimum aperture of the rotation hole is greater than or equal to the maximum aperture of the locking hole; A limit pin is provided at one end of the hook, the maximum width of the limit pin is less than or equal to the diameter of the rotating hole, and the minimum inner diameter of the limit pin is equal to the minimum inner diameter of the locking hole, and the limit pin is engaged in the rotating hole or the locking hole; The limiting hook is fixedly connected to the locking buckle. When the limiting pin is arranged in the locking hole, the end of the hook away from the limiting pin is connected to the limiting hook, and the external fixing piece is connected to the end of the locking buckle away from the locking hole.

2. The safety hook according to claim 1, characterized in that: The locking buckle also has a limiting hole, which is provided on the side of the locking buckle. The limiting hole is connected to the locking hole and the rotating hole. The hook is connected to the limiting pin after passing through the limiting hole. The limiting hole is used to limit the rotation angle of the hook in the rotating hole, and to limit the total lifting height of the hook in the rotating hole and the locking hole.

3. The safety hook according to claim 2, characterized in that: The locking buckle is further provided with a lock buckle, and the lock buckle is used to limit the limiting pin entering the locking hole.

4. The safety hook according to claim 3, characterized in that: The lock buckle includes a reset spring and a lock tongue. The locking buckle is provided with a locking opening, which is communicated with the locking hole. The lock tongue is connected to the bottom of the locking opening through the reset spring, and one end of the lock tongue is captured in the locking hole.

5. The safety hook according to claim 4, characterized in that: The limiting pin is provided with a locking hole matching the locking tongue. When the limiting pin is arranged in the locking hole, one end of the locking tongue extends into the locking hole.

6. The safety hook according to claim 2, characterized in that: The end of the limit hook close to the hook is provided with a locking piece, and the end of the hook close to the limit hook is provided with a locking head. After the limit pin enters the locking hole, the locking piece is connected to the locking head.

7. The safety hook according to claim 6, characterized in that: The engaging member includes two groups of engaging protrusions, and the engaging head is engaged between the two groups of engaging protrusions.

8. The safety hook according to claim 1, characterized in that: The external fixing member is further provided with a device hole, and the device hole is used to connect with an external safety device.

9. The safety hook according to claim 1, characterized in that: The safety hook further comprises an external telescopic rod, the external fixing piece is provided with a connecting hole, and the top end of the external telescopic rod is provided with a connecting buckle matching the connecting hole.

10. The safety hook according to claim 9, characterized in that: The connection hole is obliquely opened on the external fixing piece.

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