A safety catch

Abstract

The application discloses a safety lock, which comprises a lock body, a lock tongue, a force applying assembly and a handle; the lock body comprises a mounting part and a hook part, the hook part has a first end and a second end, the first end is connected with the mounting part, the second end is bent towards the mounting part and a gap exists between the second end and the mounting part, and an inner part of the mounting part is provided with a cavity; one end of the lock tongue is inserted into the cavity, and the lock tongue has a first position and a second position; in the first position, the lock tongue blocks the gap, and the hook part and a part of the lock tongue enclose a closed ring; in the second position, the lock tongue is separated from the hook part; the force applying assembly is used for keeping the lock tongue in the first position in a normal state; the handle is pivotally connected with the mounting part, the handle is engaged with the lock tongue, and the handle can drive the lock tongue to move from the first position to the second position. The safety lock provided by the application is not prone to falling off during use, and has better safety.

Description

Technical Field

[0001] This invention relates to the field of lock or connector technology, specifically to a safety lock that is particularly suitable for scenarios such as climbing, water sports, high-altitude operations, and pet restraint. Background Technology

[0002] A buckle is primarily used to attach cords or similar fasteners to items such as bags, belts, and pet collars, thereby creating a locking connection.

[0003] Appendix Figure 1 A cross-section of a swivel snap hook 80 is shown. The swivel snap hook includes a hook body 81 and an anti-disengagement latch 82 that supports the sliding of the hook body 81. One end of the hook body 81 forms a hook portion 85 for hooking an attachment 70, such as a loop 71 on a pet collar or pet walking harness. The other end of the hook body 81 forms a journal 86 for mounting a swivel ring 83. The swivel ring 83 is used to connect a webbing 90 or similar object, such as a rope or chain. Between the hook body 81 and the anti-disengagement latch 82, there is a spring element 84 that operates under compression. Its elastic force holds the anti-disengagement latch 82 in the closed position of the hook portion 85, so that the hook portion 85 and the anti-disengagement latch 82 define a closed hole 87, thereby interlocking with the loop 71 to achieve the connection purpose.

[0004] Appendix Figure 2 A cross-section of another rotating hook 80a is shown. This rotating hook 80a is substantially the same as the rotating hook 80 described above, also consisting of a hook body 81a with a hook portion 85a and a journal 86a, an anti-disengagement latch 82a for opening and closing the hook portion 85a, a rotating ring 83a that is held in rotation by the journal 86a, and a spring element 84a supported between the hook body 81a and the anti-disengagement latch 82a. The difference between the two rotating hooks 80 and 80a is that the latter's anti-disengagement latch 82a is hinged to the hook body 81a for swinging, and the spring element 84a is a torsion spring that operates using torsional force. The anti-disengagement latch 82a is normally held in the closed position of the hook portion 85a by its elastic force, defining a closed hole 87a that interlocks with the latch ring 71.

[0005] The aforementioned rotating hooks 80 and 80a have anti-disengagement latches 82 and 82a with a prominent outwardly protruding latch handle 88 and 88a for manual operation, allowing the anti-disengagement latches 82 and 82a to move in the same direction as the latch handles 88 and 88a to open and close the rotating hooks. However, these protruding latch handles 88 and 88a are easily misoperated by the snap ring 71 or other external forces, causing the anti-disengagement latches 82 and 82a to open automatically, opening the hooks 85 and 85a, resulting in the snap ring 71 falling off and losing its connecting function.

[0006] For example, the inventor found that the rotating hook 80 is easy to squeeze the shackle 71 to the right and cause the latched pet to suddenly rush out due to the accidental falling, resulting in high-risk events such as being hit by a car or biting a passerby, in combination with the use feedback of the user and according to market research. SUMMARY

[0007] In view of the deficiencies of the existing lock structure, the present application provides a safe lock that can effectively prevent the rope, shackle and the like from falling off and has high safety.

[0008] To achieve the above-mentioned purpose, the present application provides the following technical solutions.

[0009] A safe lock includes a lock body, a lock tongue, a force applying assembly and a dial. The lock body includes a mounting portion and a hook portion, the hook portion has a first end and a second end, the first end is connected with the mounting portion, the second end is bent towards the mounting portion and has a gap with the mounting portion, the inside of the mounting portion is provided with a cavity; one end of the lock tongue is inserted into the cavity, the lock tongue has a first position and a second position; in the first position, the lock tongue blocks the gap, and the hook portion and a part of the lock tongue form a closed ring; in the second position, the lock tongue is separated from the hook portion; the force applying assembly is used to keep the lock tongue in the first position in normal state; the dial is pivotally connected with the mounting portion, the dial is engaged with the lock tongue, and the dial can drive the lock tongue to move from the first position to the second position.

[0010] In some embodiments, a plurality of tooth grooves are arranged on the lock tongue and are spaced apart along the length direction of the mounting portion, a plurality of gear teeth are arranged on the dial, and the gear teeth are matched with the tooth grooves to realize the engagement between the dial and the lock tongue.

[0011] In some embodiments, two ear plates are arranged on the side surface of the mounting portion, and the dial is arranged between the two ear plates; the safe lock further includes a pin shaft, a pin hole is arranged on the dial, and the pin shaft is inserted into the pin hole and connected with the two ear plates at two ends thereof.

[0012] In some embodiments, the plurality of gear teeth are arranged in a ring array with the pin hole as the center, an anti-skid surface is arranged on the outer peripheral wall of the dial, an anti-skid edge is arranged on the anti-skid surface, and the pin hole is arranged between the gear teeth and the anti-skid surface.

[0013] In some embodiments, the anti-skid surface is an arc surface with the pin hole as the center, and the diameter corresponding to the anti-skid surface is greater than the diameter of the addendum circle of the gear teeth.

[0014] In some embodiments, a clamping groove is further arranged on the mounting portion, the clamping groove is communicated with the cavity, one end of the clamping groove away from the hook portion penetrates through the mounting portion, and a clamping block is arranged on the outer peripheral wall of the lock tongue and can slide in the clamping groove.

[0015] In some embodiments, the safety lock further comprises a connecting piece, the mounting portion is provided with a ring groove at the end away from the hook portion, the connecting piece is provided with a counterbore at one end, the mounting portion is inserted into the counterbore, and the connecting piece is clamped in the ring groove, and the connecting piece is provided with a rope hole.

[0016] In some embodiments, the force applying assembly is a compression spring, and the compression spring is arranged in the chamber, and one end of the compression spring is in contact with the lock tongue.

[0017] In some embodiments, the force applying assembly is a torsion spring, and the torsion spring is sleeved on the pin shaft, one end of the torsion spring is connected with the dial, and the other end of the torsion spring is connected with the ear plate.

[0018] In some embodiments, the force applying assembly comprises a first magnetic block and a second magnetic block, the first magnetic block is embedded in one end of the lock tongue close to the second end, the second magnetic block is embedded in one end of the second end close to the lock tongue, and the magnetic poles of the first magnetic block and the second magnetic block are opposite.

[0019] The safety lock provided by the present application adopts a novel structure, and when the safety lock is used, it is difficult for the rope or the buckle to act on the dial and drive the dial to rotate in a direction to open the safety lock, so that the safety lock provided by the present application is not easy to fall off the rope or the buckle during use, and has higher safety.

[0020] In addition, in the prior art, when the rope or the buckle presses the latch handle on the rotating hook in a certain direction, the rotating hook is opened; and when the rope or the buckle acts on the dial of the safety lock in the same way, the safety lock provided by the present application is locked more tightly, so that it is further ensured that the safety lock will not fall off the rope or the buckle during use. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0022] It should be understood that the elements shown in the figures are simple and clear for representation. In a commercially feasible embodiment, some elements that are useful or necessary but belong to the known content are not shown in the figures in order to reduce the obstruction in the view.

[0023] Figure 1 is a structure diagram of a rotating hook in the prior art.

[0024] Figure 2 is a structure diagram of another rotating hook in the prior art.

[0025] Figure 3 is a perspective view of the present application embodiment 1.

[0026] Figure 4 is a front view of the present application embodiment 1.

[0027] Figure 5 is a left view of the present application embodiment 1.

[0028] Figure 6 is a sectional view along the line A-A in Figure 5

[0029] Figure 7 is a front view of the lock body in the present application embodiment 1.

[0030] Figure 8 is a sectional view along the line B-B in Figure 7

[0031] Figure 9 is a left view of the lock body in the present application embodiment 1.

[0032] Figure 10 is a sectional view along the line C-C in Figure 9

[0033] Figure 11 is a front view of the dial in the present application embodiment 1.

[0034] Figure 12 is a structural view of the latch bolt in the present application embodiment 1.

[0035] Figure 13 is a structural view of the connecting member in the present application embodiment 1.

[0036] Figure 14 is a sectional view along the line D-D in Figure 4

[0037] Figure 15 is a front view of the latch bolt in the present application embodiment 1 in the second position.

[0038] Figure 16 is a sectional view of the present application embodiment 2.

[0039] Figure 17 is a sectional view of the present application embodiment 3.

[0040] The reference signs are explained as follows:

[0041] ​​​​In the figure: 1, lock body; 11, mounting part; 111, ring groove; 112, cavity; 113, clamping groove; 12, hook part; 121, first end; 122, second end; 13, ear plate; 14, gap; 2, lock tongue; 21, tooth groove; 22, clamping block; 3, handle; 31, gear tooth; 32, anti-skid surface; 33, pin hole; 4, pin shaft; 5, connecting piece; 51, rope passing hole; 52, counterbore; 53, cutting groove; 54, deformation part; 6, compression spring; 7, torsion spring; 8, first magnetic block; 9, second magnetic block. DETAILED DESCRIPTION

[0042] The various aspects of the present application are further described below.

[0043] Unless otherwise defined or specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. In addition, any method and material similar or equivalent in function, in terms of method and material, to those described herein can be used in the present application.

[0044] The following terms are explained.

[0045] Unless otherwise expressly defined and limited, the term "or" as used herein includes "and", the term "and" is equivalent to the Boolean logic operator "AND", the term "or" is equivalent to the Boolean logic operator "OR", and "AND" is a subset of "OR".

[0046] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Further, the use of "including", "comprising" and / or "consisting" as used herein is intended to be equivalent to the use of "including", "comprising" and / or "consisting" as well as to the use of "including", "comprising" and / or "consisting" in the sense of the following clauses: "including", "comprising" and / or "consisting" of the features, steps, operations, elements, and / or components as well as to the use of "including", "comprising" and / or "consisting" of one or more other features, steps, operations, elements, components and / or components thereof. Also, terms such as "on", "under", "above" and "below" are used to describe relative positions between elements or structures, rather than absolute positions.

[0047] Following, the embodiments of the present disclosure are described through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, not all. The present disclosure can also be implemented or applied by other different specific embodiments, and various modifications or changes can be made to the details in the specification without departing from the spirit of the present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present disclosure.

[0048] It should be noted that various aspects of the embodiments described below are within the scope of the appended claims. It should be apparent that the aspects described herein can be embodied in a wide variety of forms and that any specific structure and / or function described herein is merely illustrative. Based on the teachings provided herein one skilled in the art should appreciate that an aspect described herein can be implemented independently of any other aspects and that an aspect can be implemented both as any number of software running on a device and / or as an apparatus manufactured for a particular purpose. For example, an aspect can be implemented as a software routine running on a general purpose computer or be implemented as a hardware device, such as an application- specific integrated circuit ("ASIC") or a field-programmable gate array ("FPGA"). An aspect can be any combination of software and / or hardware.

[0049] It should also be noted that the figures provided in the following embodiments are only schematically illustrating the basic concept of the present disclosure, and only the components related to the present disclosure are shown in the figures, not drawn according to the number, shape and size of the components in actual implementation, and the shape, number and proportion of each component in actual implementation can be arbitrarily changed, and the layout pattern of the components can be more complex.

[0050] In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, one skilled in the art will understand that the described aspects can be practiced without these specific details.

[0051] Embodiment 1

[0052] Referring to Figures 3 to 14 As shown, the present application provides a safety lock, which comprises a lock body 1, a lock tongue 2, a force applying assembly and a dial 3. The lock body 1 comprises a mounting portion 11 and a hook portion 12, the hook portion 12 has a first end 121 and a second end 122, the first end 121 is fixedly connected with the mounting portion 11, the second end 122 is bent towards the mounting portion 11 and there is a gap 14 between the second end 122 and the mounting portion 11, and the inside of the mounting portion 11 is provided with a cavity 112; as Figure 10As shown, the chamber 112 runs through the upper and lower ends of the mounting portion 11; the lower end of the lock tongue 2 is inserted into the chamber 112, and the lock tongue 2 has a first position and a second position; as shown in Figure 4 As shown, at this time, the lock tongue 2 is in the first position, the lock tongue 2 blocks the gap 14, and the hook portion 12 and a part of the lock tongue 2 form a closed ring; as shown in Figure 15 As shown, at this time, the lock tongue 2 is in the second position, and the lock tongue 2 is separated from the hook portion 12; the force applying assembly is used to keep the lock tongue 2 in the first position in the normal state; the knob 3 is pivotally connected to the mounting portion 11, the knob 3 is engaged with the lock tongue 2, and the knob 3 can be rotated to drive the lock tongue 2 to move from the first position to the second position.

[0053] In this embodiment, the lock tongue 2 is provided with six tooth grooves 21, and the six tooth grooves 21 are equidistantly distributed along the length direction of the mounting portion 11; the knob 3 is provided with five gear teeth 31, and the gear teeth 31 are matched with the tooth grooves 21 to realize the engagement between the knob 3 and the lock tongue 2. It should be noted that in other embodiments, the tooth grooves 21 and the gear teeth 31 can also be other numbers. As shown in Figure 5 As shown, the side surface of the mounting portion 11 is provided with two ear plates 13, and the knob 3 is arranged between the two ear plates 13. The arrangement of the ear plates 13 can shield most of the knob 3, thereby preventing the rope or the clasp from accidentally touching the knob 3, and further improving the safety of the safety lock. The safety lock further comprises a pin shaft 4, the knob 3 is provided with a pin hole 33, the pin shaft 4 is inserted into the pin hole 33, and the two ends of the pin shaft 4 are respectively connected to the two ear plates 13. When the knob 3 is arranged in this way, the knob 3 has better stability.

[0054] In this embodiment, the five gear teeth 31 are arranged in a ring shape around the pin hole 33, and when the knob 3 rotates around the pin shaft 4, the five gear teeth 31 can be matched with the corresponding tooth grooves 21 in sequence, thereby driving the lock tongue 2 to move upward or downward. The outer peripheral wall of the knob 3 is provided with an anti-skid surface 32, the anti-skid surface 32 is provided with anti-skid edges (or anti-skid embossing), and the pin hole 33 is arranged between the gear teeth 31 and the anti-skid surface 32. In order to facilitate the rotation of the knob 3, the anti-skid surface 32 needs to protrude from the ear plate 13, in other words, the anti-skid surface 32 is at a position that can be touched by fingers. The main purpose of the arrangement of the anti-skid surface 32 is to increase the roughness of the edge of the knob 3, so as to prevent the knob 3 from slipping when it is rotated by fingers. As a preferred embodiment, the anti-skid surface 32 is an arc surface with the pin hole 33 as the center, and the diameter of the anti-skid surface 32 is greater than the diameter of the addendum circle of the gear teeth 31, so as to ensure that the user can easily rotate the knob 3, thereby achieving the purpose of saving labor.

[0055] In this embodiment, the mounting portion 11 is further provided with a clamping groove 113, the clamping groove 113 is communicated with the chamber 112, one end of the clamping groove 113 away from the hook portion 12 penetrates through the mounting portion 11, and the outer peripheral wall of the lock tongue 2 is provided with a clamping block 22 that can slide in the clamping groove 113. As shown in Figure 8 andFigure 12 As shown, the card slot 113 and the card block 22 are both three, the card block 22 can prevent the lock tongue 2 from rotating in the cavity 112 after cooperating with the card slot 113, thereby ensuring that the gear teeth 31 can be well cooperated with the tooth groove 21.

[0056] In order to facilitate the connection of the safety lock to the rope, the safety lock further comprises a connecting piece 5. As shown in Figure 6 and Figure 13 As shown, the mounting portion 11 away from the hook portion 12 one end is provided with a ring groove 111, one end of the connecting piece 5 is provided with a counterbore 52, the mounting portion 11 away from the hook portion 12 one end is inserted into the counterbore 52, a part of the connecting piece 5 is clamped in the ring groove 111, the connecting piece 5 is provided with a rope passing hole 51 for the rope to pass through. In the specific implementation, a cutting groove 53 is provided on the front and back of the connecting piece 5, the cutting groove 53 is communicated with the counterbore 52, thereby forming a deformation portion 54 at the upper end of the connecting piece 5 which is easy to be deformed, after the mounting portion 11 is inserted into the counterbore 52, the deformation portion 54 is extruded by the stamping equipment so as to be clamped in the ring groove 111 (see Figure 14 As shown), so that the connecting piece 5 can be prevented from falling off from the mounting portion 11.

[0057] In the embodiment, the force applying assembly is a compression spring 6, the compression spring 6 is placed in the cavity 112, one end of the compression spring 6 is in contact with the lock tongue 2, the other end of the compression spring 6 can be fixedly connected with the lower end of the mounting portion 11 or directly abut against the connecting piece 5. As shown, at this time, the compression spring 6 is in a compressed state, the compression spring 6 provides an upward pushing force to the lock tongue 2, so that the upper end of the lock tongue 2 is in close contact with the second end 122 of the hook portion 12. Figure 6

[0058] As shown in Figure 4 and Figure 6 As shown, when the safety lock needs to be opened, the safety lock can be hung on the rope by rotating the thumbwheel 3 clockwise by the finger, at the same time, the lock tongue 2 moves downward, the compression spring 6 contracts, the upper end of the lock tongue 2 is separated from the hook portion 12, the gap 14 between the second end 122 of the hook portion 12 and the upper end of the mounting portion 11 is opened, and then the safety lock can be hung on the rope conveniently. After the safety lock is hung on the rope, the finger is removed from the thumbwheel 3, and then the elastic force of the compression spring 6 pushes the lock tongue 2 to move upward until the upper end of the lock tongue 2 is in contact with the second end 122 of the hook portion 12 (i.e. the lock tongue 2 returns to the first position).

[0059] As shown in Figure 4 and Figure 6 ​As shown, the safety lock catch in the present application can be opened only when the dial wheel 3 rotates clockwise, and in actual use, it is difficult for the rope or the clasp to act on the dial wheel 3 and make the dial wheel 3 rotate clockwise, so the safety lock catch provided by the present application is not easy to fall off in use, and has higher safety. Moreover, when the rope or the clasp presses the dial wheel 3 downward, the safety lock catch is locked more tightly, so that it is further ensured that the safety lock catch will not fall off from the rope or the clasp in use.

[0060] Embodiment 2

[0061] The difference between the present embodiment and embodiment 1 is that the force applying assembly in the present embodiment is a torsion spring 7, and the installation position of the force applying assembly is also adaptively changed, and the present embodiment can achieve the same technical effect as embodiment 1. See Figure 16 As shown, the torsion spring 7 is sleeved on the pin shaft 4, one end of the torsion spring 7 is connected with the dial wheel 3, and the other end of the torsion spring 7 is connected with the ear plate 13. The torsion spring 7 always provides a force to drive the dial wheel 3 to rotate counterclockwise, so that the locking tongue 2 is in the first position in normal state.

[0062] Embodiment 3

[0063] The difference between the present embodiment and embodiment 1 is that another form of force applying assembly is adopted. See Figure 17 As shown, the force applying assembly in the present embodiment includes a first magnetic block 8 and a second magnetic block 9, both the first magnetic block 8 and the second magnetic block 9 are permanent magnets, the first magnetic block 8 is embedded in the upper end of the locking tongue 2, and the second magnetic block 9 is embedded in the lower end of the second end 122, and the magnetic pole directions of the first magnetic block 8 and the second magnetic block 9 are opposite. In normal state, the first magnetic block 8 and the second magnetic block 9 attract each other to keep the locking tongue 2 in the first position.

[0064] The examples of the embodiments of the present application herein are intended to provide an overall understanding of the multiple embodiments, and are not complete descriptions of all elements and features of the apparatus and system that can use the technology of the present application. Based on the inspiration herein, many other embodiments will become apparent to those skilled in the art, or will be derived therefrom, so that structural and logical substitutions and changes can be made without departing from the scope disclosed by the present application. The drawings are also representative, and are not drawn to scale. Therefore, the description and drawings should be regarded as illustrative rather than limiting.

[0065] The equivalents of corresponding structural, material, acts, and all method or functional descriptive elements in the claims are intended to include any structure, material, or acts for performing the functions in combination with other claim elements. The description of the various embodiments is intended to be illustrative, and not to limit the scope of the application. Many modifications and variations will occur to those of ordinary skill in the art upon reading this description. These embodiments have been chosen on the basis of the best mode of the application and are presented for the purposes of illustration and description. It is intended that the scope of the application be defined by the claims appended hereto and their equivalents.

[0066] The purpose of the abstract is to enable the reader quickly to determine the nature of the technical disclosure. This is not intended to be limiting as to the scope of the claims. The principal claimed aspects hereof are set forth in the claims below. The foregoing Summary of the Invention is not intended to be in any way limiting of the application. Additional objects, advantages and novel features of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. The objects and advantages of the application can be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

[0067] The above description is only specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A safety catch, characterised in that, The utility model relates to a safety lock, which comprises: a lock body, the lock body comprising a mounting portion and a hook portion, the hook portion having a first end and a second end, the first end being connected with the mounting portion, the second end being bent towards the mounting portion and having a gap with the mounting portion, the mounting portion being internally provided with a cavity; a lock tongue, one end of the lock tongue being inserted into the cavity, the lock tongue having a first position and a second position, in the first position, the lock tongue blocks the gap, the hook portion and a part of the lock tongue forming a closed loop, in the second position, the lock tongue is separated from the hook portion, the lock tongue being provided with a plurality of tooth grooves, the tooth grooves being spaced apart along the length direction of the mounting portion; a force applying assembly, the force applying assembly being used to keep the lock tongue in the first position in a normal state; a dial, the dial being pivotally connected with the mounting portion, the dial being provided with a plurality of wheel teeth, the wheel teeth being matched with the tooth grooves to realize the engagement between the dial and the lock tongue, the dial being actuated to drive the lock tongue to move from the first position to the second position; wherein the side surface of the mounting portion is provided with two ear plates, the dial is arranged between the two ear plates, the safety lock further comprises a pin shaft, the dial is provided with a pin hole, the pin shaft is inserted into the pin hole, and the two ends of the pin shaft are respectively connected with the two ear plates; the outer peripheral wall of the dial is provided with an anti-skid surface, the anti-skid surface is provided with an anti-skid rib, the anti-skid surface protrudes from the ear plate, the plurality of wheel teeth are arranged in a ring array around the pin hole, and the pin hole is arranged between the wheel teeth and the anti-skid surface.

2. The safety catch of claim 1, wherein: The anti-skid surface is an arc surface centered on the pin hole, and the diameter corresponding to the anti-skid surface is greater than the diameter of the addendum circle of the wheel teeth.

3. The safety catch of claim 1, wherein: The mounting portion is further provided with a clamping groove, the clamping groove is communicated with the cavity, one end of the clamping groove away from the hook portion penetrates through the mounting portion, and the outer peripheral wall of the lock tongue is provided with a clamping block which can slide in the clamping groove.

4. The safety catch of claim 1, wherein: The mounting portion is further provided with a ring groove at an end away from the hook portion, one end of a connecting piece is provided with a counterbore, the end of the mounting portion away from the hook portion is inserted into the counterbore, a part of the connecting piece is clamped in the ring groove, and the connecting piece is provided with a rope penetrating hole.

5. The safety catch according to any one of claims 1 to 4, wherein: The force applying assembly is a compression spring, one end of the compression spring is in contact with the lock tongue.

6. The safety catch of claim 1, wherein: The force applying assembly is a torsion spring, the torsion spring is sleeved on the pin shaft, one end of the torsion spring is connected with the dial, and the other end of the torsion spring is connected with the ear plate.

7. The safety catch according to any one of claims 1 to 4, wherein: The force applying assembly comprises a first magnetic block and a second magnetic block, the first magnetic block is embedded in one end of the lock tongue close to the second end, the second magnetic block is embedded in one end of the second end close to the lock tongue, and the magnetic poles of the first magnetic block and the second magnetic block are opposite.

Images