Safety Shackle

Abstract

The present invention relates to a safety shackle. The shackle body has a first through hole formed at a first body end, a second through hole formed at a second body end so as to be concentric with the first through hole, and a first lock mechanism mounting hole vertically penetrating the first through hole at the first body end. The shackle pin has a first pin end inserted into the first through hole and a second pin end inserted into the second through hole, and a lock groove is formed along the outer periphery of the first pin end. The first safety lock mechanism includes a pair of first safety latches that are symmetrically arranged with each other and partially inserted into the first lock mechanism mounting groove, and each first fixing latch is inserted into or separated from the lock groove of the first pin end located in the first through hole as each first latch body is coupled to the first body end by a first hinge shaft and rotates, and a first safety latch spring that is arranged between the first safety latches and applies an elastic force to the first safety latch in a direction to insert the first fixing latch into the lock groove.

Description

Detailed Description of the Invention

[0001] [Technical field] The present invention relates to a shackle used to connect a heavy load to a towing device during the transportation of the heavy load. [Background technology] Generally, a shackle is used as a connecting member for connecting a heavy load to a towing device such as a crane that lifts the heavy load during transportation of the heavy load. One side of the shackle is connected to a rope or chain of the towing device, and the other side of the shackle is connected to a connecting part of the heavy load.

[0002] In the conventional shackle, the shackle body is formed in a U-shape and is connected to the rope or chain of the towing device, and the shackle pin is screwed into one end of the shackle body while passing through both ends of the shackle body and the connecting part on the heavy load side inserted between them.

[0003] In such a shackle, a worker rotates the shackle pin in a fastening direction to fasten it to the shackle body, and rotates the shackle pin in a disassembling direction to disassemble it from the shackle body. Therefore, the fastening and disassembling process of the shackle pin to the shackle body is troublesome, and there is a problem that it takes an excessive amount of time during the transportation of heavy goods, which requires frequent assembly and disassembly of the shackle. In addition, there are cases where the shackle pin comes loose from the shackle body due to minute vibrations transmitted to the shackle through the rope or chain of the towing device, threatening safety.

[0004] In this regard, there is a technology disclosed in Korean Patent Publication No. 10-1705891 (announced on February 13, 2017). Summary of the Invention [Problem to be solved by the invention] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a safety shackle which can be easily and quickly fastened and disassembled, and which can improve safety. [Means for solving the problems] The safety shackle according to the present invention for achieving the above object includes a shackle body, a shackle pin, and a first safety lock mechanism. The shackle body is bent at the center of the body so that first and second body ends are spaced apart and face each other. A first through hole is formed at the first body end, a second through hole is formed at the second body end so as to be concentric with the first through hole, and a first lock mechanism mounting pin is formed at the first body end, which perpendicularly passes through the first through hole. groove When the first pin end of the shackle pin is inserted into the first through hole and the second pin end is inserted into the second through hole, the pin center closes the space between the first and second body ends, and a lock groove is formed along the outer periphery of the first pin end. The first safety lock mechanism includes a pair of first safety latches that are symmetrically arranged and partially inserted into the first lock mechanism mounting groove, and when each first latch body is coupled to the first body end by a first hinge shaft and rotates, each first fixing latch is inserted into or separated from the lock groove of the first pin end located in the first through hole, and a first safety latch spring that is disposed between the first safety latches and applies an elastic force to the first safety latch in a direction to insert the first fixing latch into the lock groove. [Effects of the Invention] According to the safety shackle of the present invention, when the shackle pin is fastened to the shackle body, the shackle pin is automatically and safely fixed to the shackle body, and the shackle pin can be easily and quickly disassembled, thereby improving convenience and safety. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a safety shackle according to one embodiment of the present invention.

[0005] FIG. 2 is an exploded perspective view of FIG.

[0006] FIG. 3 is a perspective view showing a cross section of the shackle body in FIG.

[0007] FIG. 4 is a perspective view of a state in which a shackle pin is fastened to the shackle body in FIG.

[0008] FIG. 5 is a cross-sectional view of FIG.

[0009] FIG. 6 is a cross-sectional view illustrating the process of releasing the first safety lock mechanism in FIG.

[0010] 7 and 8 are cross-sectional views illustrating the locking and unlocking process of the second safety lock mechanism in FIG.

[0011] FIG. 9 is a cross-sectional view illustrating the operation of the separation prevention mechanism in FIG. [Mode for carrying out the invention] The present invention will be described in detail with reference to the accompanying drawings as follows, in which the same components are designated by the same reference numerals, and repeated explanations and detailed explanations of known functions and components that may obscure the gist of the present invention will be omitted.

[0012] The embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art, and therefore, the shapes and sizes of elements in the drawings are exaggerated for clarity.

[0013] FIG. 1 is a perspective view of a safety shackle according to one embodiment of the present invention. FIG. 2 is an exploded perspective view of FIG. 1. FIG. 3 is a perspective view showing a cross section of the shackle body in FIG. 2. FIG. 4 is a perspective view showing a state in which a shackle pin is fastened to the shackle body in FIG. 1. FIG. 5 is a cross-sectional view of FIG. 4. FIG. 6 is a cross-sectional view explaining the release process of the first safety lock mechanism in FIG. 5. FIGS. 7 and 8 are cross-sectional views explaining the locking and release processes of the second safety lock mechanism in FIG. 4. FIG. 9 is a cross-sectional view explaining the operation of the separation prevention mechanism in FIG. 5.

[0014] 1 to 9, a safety shackle 100 according to an embodiment of the present invention includes a shackle body 110, a shackle pin 120, and a first safety lock mechanism .

[0015] The shackle body 110 has a shape, for example, a U-shape, in which the body center 113 is bent and the first and second body ends 111, 112 are spaced apart to face each other. The shackle body 110 allows the rope or chain of a towing device to be inserted and connected into the space formed by the U-shape of the body center 113.

[0016] The shackle body 110 has a first through hole 111a formed at a first body end 111 and a second through hole 112a formed at a second body end 112 so as to be concentric with the first through hole 111a. The shackle body 110 supports a shackle pin 120 by inserting it into the first and second through holes 111a and 112a. The first and second through holes 111a and 112a may have a circular cross section. The first body end 111 may extend outward along the longitudinal direction of the first through hole 111a, and the second body end 112 may extend outward along the longitudinal direction of the second through hole 112a.

[0017] The shackle body 110 has a first lock mechanism mounting hole 111a that extends vertically through the first body end 111. groove 114 is formed for mounting the first lock mechanism. groove 114 allows a first safety lock mechanism 130 to be attached.

[0018] For mounting the first locking mechanism groove 114 may be formed on an outer extension portion of the first body end portion 111. groove The first lock mechanism 114 may be formed to vertically penetrate the first through-hole 111a from above the outer extension portion of the first body end 111 based on the first body end 111 being positioned at the upper side. groove 114 may be formed along half of the outer periphery of the first body end 111 with a constant cross-sectional area.

[0019] With the first pin end 121 of the shackle pin 120 inserted into the first through hole 111a and the second pin end 122 inserted into the second through hole 112a, the pin center portion 123 closes the space between the first and second body ends 111, 112. With the first pin end 121 of the shackle pin 120 inserted into the first through hole 111a via the second through hole 112a, the second pin end 122 is inserted into the second through hole 112a.

[0020] After the rope or chain of the towing device is inserted into the curved space of the shackle body 110, the shackle pin 120 penetrates the first and second body ends 111, 112 of the shackle body 110 and the connecting part of the heavy load inserted therebetween, and is fastened to the shackle body 110. As a result, the shackle pin 120 is connected to the connecting part of the heavy load, and at the same time, closes the gap between the first and second body ends 111, 112 of the shackle body 110, making it possible to prevent the rope or chain from coming off.

[0021] The shackle pin 120 may have a circular cross section. A lock groove 121a is formed along the outer periphery of the first pin end 121 of the shackle pin 120. The lock groove 121a is formed in a concave shape with a constant cross-sectional area along the outer periphery of the first pin end 121. The lock groove 121a interacts with a first safety latch 131 of the first safety lock mechanism 130 to enable the first pin end 121 of the shackle pin 120 to be locked or unlocked relative to the first body end 111 of the shackle body 110.

[0022] The first safety lock mechanism 130 includes a pair of first safety latches 131 and a first safety latch spring 136. The first safety latches 131 are symmetrical to each other and partially inserted into the first lock mechanism mounting groove 114. As each first latch body 132 is coupled to the first body end 111 by a first hinge shaft 134 and rotates, each first fixing latch 133 is inserted into or separated from the lock groove 121a of the first pin end 121 located in the first through hole 111a.

[0023] The first fixing latch 133 may have a surface 133a inclined toward the first pin end 121 in a direction away from the first pin end 121. Therefore, the first fixing latch 133 is configured to be inclined toward the first lock mechanism mounting surface 133a as the inclined surface 133a comes into contact with and is pressed by the approaching first pin end 121. groove It moves smoothly inside 114.

[0024] The inclined surface 133a of the first fixing latch 133 softly fastens the shackle pin 120 to the shackle body 110. That is, when the first pin end 121 contacts, the first fixing latch 133 is pushed by the inclined surface 133a and rotates to come out of the first through hole 111a, and then is placed in the lock groove 121a by the elastic force of the first safety latch spring 136.

[0025] Meanwhile, the portion of the first fixing latch 133 opposite the inclined surface 133 a may be perpendicular to the longitudinal direction of the first pin end 121 .

[0026] The first pin end 121 may have a surface 121b inclined toward the first fixed latch 133 at a portion that contacts the first fixed latch 133. For example, the first pin end 121 may have a surface 121b inclined toward the inclined surface 133a of the first fixed latch 133 at a portion that contacts the inclined surface 133a of the first fixed latch 133. The first pin end 121 may have the inclined surface 121b such that the outer diameter gradually decreases from the outer periphery of the lock hole 121a near the end to the end.

[0027] The inclined surface 121b of the first pin end 121 has the same angle as the inclined surface 133a of the first fixing latch 133. Therefore, the inclined surface 121b of the first pin end 121 increases the area of ​​contact with the inclined surface 133a of the first fixing latch 133, thereby increasing the area of ​​contact between the first fixing latch 133 and the inclined surface 133a of the first lock mechanism. groove This allows the inner casing 114 to move more smoothly.

[0028] The lock groove 121a may have an inner wall closer to the first fixed latch 133 that forms a right angle with the bottom surface, and an inner wall farther from the first fixed latch 133 that forms an incline with respect to the bottom surface toward the pin center portion 123. The lock groove 121a can more stably restrain the first fixed latch 133 by having the inner walls that form a right angle come into surface contact with the outer walls of the first fixed latch 133 that face each other, and the inclined inner walls come into surface contact with the inclined surfaces 133a of the first fixed latch 133 that face each other.

[0029] The first latch body 132 may have a certain thickness. The first latch body 132 may be used for mounting the first locking mechanism. groove An inner end portion of the first latch body 132 near the bottom surface of the first body end 111 may be coupled to the first body end 111 via a first hinge shaft 134. The first hinge shaft 134 is arranged parallel to the longitudinal direction of the shackle pin 120 and may rotatably support the first latch body 132 relative to the first body end 111. The first body end 111 has a shaft hole 111c for mounting the first hinge shaft 134.

[0030] The first hinge shaft 134 may have a head at one end and a screw portion at the other end. The head of the first hinge shaft 134 is hexagonal and can be tightened or loosened by a user's fingers or a hexagonal wrench. The first hinge shaft 134 may be formed without a screw portion at a central portion.

[0031] The first hinge shaft 134 has a portion without a threaded portion inserted into a shaft hole of the first latch body 132, and the threaded portion is screwed into the first body end portion 111, thereby smoothly supporting the rotation of the first safety latch 131 while preventing the first safety latch 131 from coming off.

[0032] The first latch body 132 may include a first fixed latch 133 at an outer end portion of an inner portion facing the first through-hole 111a, the outer end portion being far from the first hinge shaft 134. The first latch body 132 may include a passage groove 132a formed in a concave shape along an inner portion from the first fixed latch 133 so that the first pin end portion 121 can pass through in a state in which the first fixed latch 133 is disengaged from the first through-hole 111a.

[0033] The first latch body 132 may have an actuating piece 135 protruding from an outer portion. The actuating piece 135 is pushed outwardly of the first locking mechanism mounting groove 114 by a user to rotate the first latch body 132 and separate the first fixed latch 133 from the lock groove 121a. The user can separate the first fixed latch 133 from the lock groove 121a by pulling or pushing the actuating piece 135 of the first safety latch 131 with a finger.

[0034] The first safety latch spring 136 is disposed between the first safety latches 131 and applies elastic force to the first safety latch 131 in a direction to insert the first fixing latch 133 into the lock groove 121a. The first safety latch spring 136 is made of a tension coil spring and is installed between the outer ends of the first latch body 132.

[0035] The first latch body 132 may have mounting grooves formed at outer ends facing each other apart from the first hinge shaft 134. The first safety latch spring 136 has both ends inserted into the mounting grooves of the first latch body 132 and supported therein.

[0036] The first safety latch spring 136 holds the first fixed latch 133 in a state in which it is drawn into the first through-hole 111a by its elastic force. When the first fixed latch 133 receives an external force and comes out of the first through-hole 111a, the first safety latch spring 136 is elastically deformed, and then when the external force applied to the first fixed latch 133 is removed, the first safety latch spring 136 returns the first fixed latch 133 to its original position by its elastic restoring force.

[0037] The first safety lock mechanism 130 operates as follows. When a user fastens the shackle pin 120 to the shackle body 110, the first fixing latch 133 is drawn into the first through hole 111a, and the first pin end 121 of the shackle pin 120 is inserted into the first lock mechanism mounting hole 111b. groove 114. This causes the first safety latch spring 136 to be elastically deformed.

[0038] Thereafter, when the lock groove 121a of the first pin end 121 corresponds to the first fixing latch 133, the first safety latch spring 136 causes the first fixing latch 133 to enter the lock groove 121a by its elastic restoring force. Therefore, when a user inserts the first pin end 121 of the shackle pin 120 into the first body end 111 of the shackle body 110, the first fixing latch 133 is automatically inserted into the lock groove 121a, making it possible to lock the first pin end 121 to the first body end 111.

[0039] In addition, when the user moves the operating pieces 135 of the first safety latch 131 away from each other, the first lock mechanism mounting portion 134 is groove When 114 is pulled or pushed outward, the first safety latch spring 136 is elastically deformed to separate the first fixing latch 132 from the locking groove 121a and release the first pin end 121 from the first body end 111. As a result, the first pin end 121 can be conveniently locked and unlocked from the first body end 111.

[0040] As an additional embodiment, the second body end 112 may include a locking groove 112b formed along the inner circumference of the second through hole 112a. The locking groove 112b is formed concavely with a constant cross-sectional area along the inner circumference of the second through hole 112a. The locking groove 112b interacts with the second locking latch 143 of the second safety lock mechanism 140 to allow the second pin end 122 of the shackle pin 120 to be locked or unlocked relative to the second body end 112 of the shackle body 110.

[0041] The second pin end 122 may include a second locking mechanism mounting groove 122a cut from the end so that both sides of the lateral surface are open, and a ring mounting groove 122b formed along the outer periphery. The second locking mechanism mounting groove 122a is formed with a constant cross-sectional area along the longitudinal direction of the second pin end 122. The ring mounting groove 122b is formed in a concave shape with a constant cross-sectional area along the outer periphery of the second pin end 122. The second locking mechanism mounting groove 122a and the ring mounting groove 122b allow the second safety locking mechanism 140 to be mounted.

[0042] The second safety lock mechanism 140 may include a pair of second safety latches 141, a second safety latch spring 146, and a snap ring 147. The pair of second safety latches 141 are symmetrical to each other and partially inserted into the second lock mechanism mounting groove 122a, and as each second latch body 142 is coupled to the second pin end 122 by the second hinge shaft 144 and rotates, each second fixing latch 143 is inserted into or separated from the fixing groove 112b.

[0043] The second latch body 142 may have a constant thickness. The second latch body 142 is rotatably coupled to the second pin end 122 by a second hinge shaft 144 with an outer end portion close to the distal end of the second pin end 122 disposed in the second lock mechanism mounting groove 122a. The second hinge shaft 144 is disposed perpendicular to the longitudinal direction of the shackle pin 120 to rotatably support the second latch body 142.

[0044] The second hinge shaft 144 may have a threaded portion formed at one portion and a threaded portion omitted at the remaining portion. The second hinge shaft 144 has a threaded portion screwed into the second pin end 122 when the threaded portion is inserted into the shaft hole of the second latch body 142, thereby smoothly supporting the rotation of the second safety latch 141 while preventing the second safety latch 141 from coming off.

[0045] The second latch body 142 has a second fixed latch 143 at an inner end far from the distal end of the second pin end 122. The second fixed latch 143 is formed integrally with the second latch body 142 and has the same thickness. The inner end of the second latch body 142 may have a convex curved shape. Therefore, when the second pin end 122 is inserted into the second through hole 112a of the second body end 112, the inner end of the convex curved shape of the second latch body 142 comes into contact with the outer periphery of the second through hole 112b and is smoothly drawn into the second lock mechanism mounting groove 122a.

[0046] As a result, the second fixing latch 143 enters the second through-hole 112b while being pulled into the second lock mechanism mounting groove 122a, and is then inserted into the fixing groove 112b. The second through-hole 112b has an expanded shape with a convex curve from the outer periphery, which makes it easier for the second latch body 142 to be pulled into the second lock mechanism mounting groove 122a.

[0047] The second latch body 142 may include a pressing piece 145 extending from an outer end thereof to the outside of the second locking mechanism mounting groove 122a. The pressing piece 145 is pressed by a user to rotate the second latch body 142 into the second locking mechanism mounting groove 122a and separate the second fixing latch 143 from the fixing groove 112b.

[0048] The second safety latch spring 146 is disposed between the second safety latches 141 and applies elastic force to the second safety latch 141 in a direction to insert the second fixed latch 143 into the fixed groove 112b. The second safety latch spring 146 may be made of a compression coil spring. The second latch body 142 may have mounting grooves formed in opposing positions offset inwardly from the second hinge shaft 144. The second safety latch spring 146 has both ends inserted into the mounting grooves of the second latch body 142 and supported.

[0049] The second safety latch spring 146 uses its elastic force to hold the second fixing latch 143 in a state pulled out from the second lock mechanism mounting groove 122a. When the second fixing latch 143 receives an external force and is pulled into the second lock mechanism mounting groove 122a, the second safety latch spring 146 is elastically deformed. When the external force applied to the second fixing latch 143 is removed, the second safety latch spring 146 returns the second fixing latch 143 to its original position using its elastic restoring force.

[0050] The snap ring 147 is inserted into the ring mounting groove 122b while surrounding the second latch body 142, and prevents the second safety latch 141 from coming off the second safety latch spring 146. The snap ring 147 has one split shape and is inserted into the ring mounting groove 122b.

[0051] The second safety lock mechanism 140 operates as follows: When a user fastens the shackle pin 120 to the shackle body 110, the second fixing latch 143 is pulled out of the second lock mechanism mounting groove 122a of the second pin end 122, and as the inner end of the second latch body 142 abuts against the outer periphery of the second through hole 112b and rotates, it is pulled into the second lock mechanism mounting groove 122a. This causes the second safety latch spring 146 to elastically deform.

[0052] Thereafter, when the second fixing latch 143 enters the second through hole 112b and corresponds to the fixing groove 112b, the second safety latch spring 146 causes the second fixing latch 143 to enter the fixing groove 112b by its elastic restoring force. Therefore, when the user inserts the second pin end 122 of the shackle pin 120 into the second body end 112 of the shackle body 110, the second fixing latch 143 is automatically inserted into the fixing groove 112b, thereby making it possible to fix the second pin end 122 to the second body end 111.

[0053] In addition, when the user simultaneously presses the pressing pieces 145 with their fingers to rotate the second latch bodies 142 toward each other, the second safety latch spring 146 is elastically deformed to separate the second fixing latch 143 from the fixing groove 112b and release the second pin end 122 from the second body end 112. As a result, the second pin end 122 can be conveniently fixed to and released from the second body end 112.

[0054] Meanwhile, the second safety lock mechanism 140 may be omitted from the second pin end 122 of the shackle pin 120, and instead the first safety lock mechanism 130 of the above example may be attached to the second body end 112 of the shackle body 110. In this case, the second pin end 122 has a lock groove 121a of the first pin end 121. The second pin end 122 and the first pin end 121 may be symmetrical to each other. The second body end 112 may have a lock groove 121a for mounting the first lock mechanism of the first body end 111. groove The second body end 112 may have a shape symmetrical to the first body end 111.

[0055] As an additional embodiment, the second body end 112 may include a housing mounting hole 112c that perpendicularly passes through the second through hole 112b. The housing mounting hole 112c allows a separation prevention mechanism 150 to be mounted.

[0056] The detachment prevention mechanism 150 may include a housing 151, a nose 152, and a nose spring 153. The housing 151 has an internal space, one end is open, and the other end is closed. The housing 151 is mounted in the housing mounting hole 112c with one opening facing the second through hole 112a. The housing 151 may be screwed into the housing mounting hole 112c. In this case, a female thread is formed in the housing mounting hole 112c, and a male thread is formed on the outer circumferential surface of the housing 151 to be coupled with the female thread of the housing mounting hole 112c.

[0057] As the nose 152 moves in and out through the opening of the housing 151, it is inserted into or separated from the lock groove 121a located in the second through hole 112b. The outer end of the nose 152 facing the second through hole 112b has a convex curved surface to minimize contact with the shackle pin 120. The inner end of the nose 152 located inside the housing 151 is caught around the opening of the housing 151 to prevent it from coming off.

[0058] The nose spring 153 is accommodated in the housing 151 and applies an elastic force to the nose 152 in a direction to pull the nose 152 out of the housing 151. The nose spring 153 may be a compression coil spring. Both ends of the nose spring 153 are supported by the bottom surface of the housing 151 and the inner end of the nose 152 within the housing 151.

[0059] The separation prevention mechanism 150 operates as follows: When a user fastens the shackle pin 120 to the shackle body 110, the nose 152 is drawn into the second through hole 112a and is pushed and drawn into the inside of the housing 151 by the outer surface of the shackle pin 120. This causes the nose spring 153 to elastically deform.

[0060] Thereafter, when the shackle pin 120 is removed from the shackle body 110 and the lock groove 121a of the first pin end 121 corresponds to the nose 152, the nose spring 153 draws the nose 152 into the lock groove 121a by its elastic restoring force. As a result, the first pin end 121 of the shackle pin 120 is caught between the lock groove 121a and the nose 152 and is not completely removed from the shackle body 110. This prevents the shackle pin 120 from being lost and improves the convenience of fastening the shackle pin 120.

[0061] Meanwhile, when attempting to completely dismantle the shackle pin 120 from the shackle body 110, the separation prevention mechanism 150 is partially pulled outward from the housing mounting hole 112c to pull the nose 152 out of the lock groove 121a, thereby completely separating the first pin end 121 from the second through hole 112b. When the housing 151 is screwed into the housing mounting hole 112c, the separation prevention mechanism 150 allows an operator to unscrew the housing 151 and pull it partially outward from the housing mounting hole 112c.

[0062] An example of the operation of the safety shackle 100 according to the above embodiment will be described as follows.

[0063] A user fastens the shackle pin 120 to the shackle body 110. Then, the first pin end 121 passes through the second through hole 112a of the second body end 112 and is inserted into the first through hole 111a of the first body end 111. At this time, the first fixing latch 133 of the first safety latch 131 is pulled out into the first through hole 111a by the first safety latch spring 136, and the first locking mechanism mounting spring 137 is pulled out by the first pin end 121. groove 114. Thereafter, when the lock groove 121a of the first pin end 121 corresponds to the first fixing latch 133, the first fixing latch 133 enters the lock groove 121a due to the elastic restoring force of the first safety latch spring 136, thereby locking the first pin end 121 to the first body end 111.

[0064] Meanwhile, the second pin end 122 is inserted into the second through hole 112a of the second body end 112. At this time, the second fixing latch 143 of the second safety latch 141 is pulled out of the second lock mechanism mounting groove 122a of the second pin end 122 by the second safety latch spring 146, and is pulled into the second lock mechanism mounting groove 122a as the inner end of the second latch body 142 abuts against the outer periphery of the second through hole 112a and rotates. After that, when the second fixing latch 143 enters the second through hole 112a and corresponds to the fixing groove 112b, it enters the fixing groove 112b by the elastic restoring force of the second safety latch spring 146 to fix the second pin end 122 to the second body end 112.

[0065] In this state, in order to dismantle the shackle pin 120 from the shackle body 110, the user pulls or pushes open the operating piece 135 of the first safety latch 131 with his / her fingers, and pushes the pressing piece 145 of the second safety latch 141 with his / her fingers to contract. Then, the first fixing latch 133 is separated from the locking groove 121a by the elastic deformation of the first safety latch spring 136, and the second fixing latch 143 is separated from the fixing groove 112b by the elastic deformation of the second safety latch spring 146. Thereafter, the user pulls out the first and second pin ends 121, 122 from the first and second body ends 111, 112 to release them.

[0066] Next, the user moves the first pin end 121 to the second through hole 112b of the second body end 112 to open the gap between the first and second body ends 111, 112. At this time, the nose 152 of the separation prevention mechanism 150 is pushed by the shackle pin 120 and disengaged from the second through hole 112b, and corresponds to the lock groove 121a of the first pin end 121. Then, the nose 152 is drawn into the lock groove 121a by the elastic restoring force of the nose spring 153. As a result, the shackle pin 120 can wait to be fastened again with the first pin end 121 not completely removed from the shackle body 110.

[0067] In this manner, in the safety shackle 100 of the present embodiment, when the shackle pin 120 is fastened to the shackle body 110, the shackle pin 120 is automatically and safely fixed to the shackle body 110, and the shackle pin 120 can be dismantled conveniently and quickly, thereby improving convenience and safety.

[0068] In addition, the safety shackle 100 of this embodiment can ensure safety even if only one of the first safety latches 131 of the first safety lock mechanism 130 is disassembled, and can ensure safety even if only one of the second safety latches 141 of the second safety lock mechanism 140 is disassembled. Therefore, the safety shackle 100 of this embodiment can ensure safety in two ways with the first and second safety lock mechanisms 130 and 140, respectively, thereby ensuring safety in four ways.

[0069] The present invention has been described with reference to an embodiment shown in the accompanying drawings, but this is merely an example, and those skilled in the art will recognize that various modifications and equivalent embodiments are possible. Therefore, the true scope of protection of the present invention should be determined only by the claims. [Brief description of the drawings]

[0070] [Figure 1] FIG. 1 is a perspective view of a safety shackle according to an embodiment of the present invention. [Diagram 2] FIG. 2 is an exploded perspective view of FIG. [Diagram 3] FIG. 3 is a perspective view showing a cross section of the shackle body in FIG. 2. [Figure 4] FIG. 2 is a perspective view showing a state in which a shackle pin is fastened to the shackle body in FIG. [Diagram 5] FIG. 5 is a cross-sectional view of FIG. [Figure 6] 6 is a cross-sectional view illustrating the process of releasing the first safety lock mechanism in FIG. 5. FIG. [Figure 7] 5 is a cross-sectional view illustrating the locking and unlocking process of the second safety lock mechanism in FIG. 4. [Figure 8] 5 is a cross-sectional view illustrating the locking and unlocking process of the second safety lock mechanism in FIG. 4. [Figure 9] FIG. 6 is a cross-sectional view illustrating the operation of the separation prevention mechanism in FIG. 5.

Claims

1. a shackle body having a curved body center such that first and second body ends are spaced apart and face each other, a first through hole is formed in the first body end, a second through hole is formed in the second body end so as to be concentric with the first through hole, and a first lock mechanism mounting groove is formed in the first body end and perpendicularly passes through the first through hole; a shackle pin having a lock groove formed along an outer periphery of the first pin end, the pin center portion closing a gap between the first and second body ends when the first pin end is inserted into the first through hole and the second pin end is inserted into the second through hole; a pair of first safety latches, each of which is symmetrically arranged with one another and partially inserted into the first lock mechanism mounting groove, and each of which is inserted into or separated from the lock groove of the first pin end located in the first through hole as each of the first latch bodies is coupled to the first body end by a first hinge shaft and rotates; and a first safety latch spring, which is disposed between the first safety latches and applies an elastic force to the first safety latch in a direction of inserting the first fixing latch into the lock groove; Includes a safety shackle.

2. each of the first latch bodies has an inner end portion close to a bottom surface of the first lock mechanism mounting groove coupled to the first body end portion by the first hinge shaft, and includes the first fixing latch at an outer end portion far from the first hinge shaft among inner portions facing the first through hole, and includes a passing groove formed in a concave shape along the inner portion from the first fixing latch so that the first pin end can pass in a state where the first fixing latch is disengaged from the first through hole, and includes an operating piece protruding from an outer portion; 2. The safety shackle as set forth in claim 1, wherein the first safety latch spring is a tension coil spring and is mounted between outer ends of the first latch body.

3. 2. The safety shackle of claim 1, wherein said first fixing latch has a surface inclined toward said first pin end in a direction away from said first pin end.

4. 2. The safety shackle according to claim 1, wherein the first pin end has a surface inclined toward the first fixing latch at a portion where the first pin end contacts the first fixing latch.

5. The second body end includes a fixing groove formed along an inner circumference of the second through hole, The second pin end includes a second lock mechanism mounting groove that is cut so that both sides of the lateral surface are open from the end, and a ring mounting groove that is formed along the outer periphery, a pair of second safety latches, each of which is symmetrically arranged with respect to each other and partially inserted into the second lock mechanism mounting groove, and each of which has a second latch body connected to an end of the second pin by a second hinge shaft and rotates so that each of the second fixing latches is inserted into or separated from the fixing groove; a second safety latch spring disposed between the second safety latches and configured to apply an elastic force to the second safety latch in a direction to insert the second fixing latch into the fixing groove; a second safety lock mechanism including a snap ring that is inserted into the ring mounting groove while surrounding the second latch body and prevents the second safety latch and the second safety latch spring from coming off; 2. A safety shackle according to claim 1, comprising:

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