TW201630549A - Three-stage safety hook - Google Patents

Abstract

The present invention consists of a hook, a locking lever, a first spring, a control lever and a second spring. The hook has a shaft hole and a first slot provided at one end edge of the hook mouth, and the other end edge is disposed with a stopper; one end edge of the locking lever is provided with a first bolt that can move along the first slot; when the first bolt moves to a first position of the first slot, the other end of the locking lever is positioned at the stopper for closing the hook mouth; when the first bolt moves to a second position of the first slot, the other end of the locking lever can be set at a position for releasing from the stopper; the first spring is to actuate the first bolt to maintain at the first position, and to actuate the other end of the locking lever to maintain at the stopper; the control lever is pivoted to the shaft hole using a spindle, so that when the control lever swings to a third position, it can limit the first bolt at the first position, and the second spring actuates the control lever to stay at the third position, so as to ensure that the locking lever latches the hook mouth. When it is desired to open the hook mouth, the control lever should be operated to detach from the third position in order to pull the locking lever to move the first bolt to the second position, followed by actuating the locking lever to rotate toward the hook hole, thereby constituting the three-stage mode of opening the mouth hook.

Description

Three-section safety hook

The invention provides a three-stage safety hook, in particular, a novel technology for releasing the lock hole through the operation lever, pulling the lock rod out of the limit portion, and forcing the lock rod to rotate toward the hook hole, so as to open the hook hole. With this new design, the decoupling concerns are further minimized.

In rock climbing, mountaineering, construction. . In an environment where lifting is required, safety hooks and safety belts must be used to ensure the safety of personnel.

According to the US Patent No. 81177721, the invention discloses a state-of-the-art safety hook. However, the patent has the following shortcomings to be improved:

1. In the previous patent case, the opening hook hole for controlling whether the lock lever can be rotated simply by operating the lever is still in the category of the two-stage safety hook. Therefore, for the high-altitude use environment with multiple changes, the touch lever can be decoupled. Concerns, it is difficult to form a protective role.

2. When the front lock lever of the patent is subjected to the side impact force, the side impact force can only be transmitted to the hook body at a single point, which is easy to stress concentration, and the length of the lock rod is greatly limited, so the hook mouth cannot be correspondingly enlarged. In this way, when we engage in hooking or unhooking, we can't get in place once, which increases the trouble of operation.

The present inventors have carefully added the above shortcomings of the patent. The present invention was finally developed by research and improvement.

The invention provides a three-stage safety hook, which comprises at least: a hook body having a hook hole extending through the thickness, and a hook body having a hook opening communicating with the inner and outer sides of the hook hole, the hook body being at the one end edge of the hook opening a spacing hole having a through hole, a first groove, and a limiting portion at a further end of the hook opening; a locking rod having a first bolt at one end thereof movable along the first slot, the first bolt capable of Moving along the first slot between the first and second positions, when the first pin moves to the first position, the other end of the lock bar is positioned at the limiting portion to close the hook opening, when the first pin moves to the second position At the same time, the other end of the lock lever can be interlocked at the position of the release limit portion; a first spring is actuated to hold the first bolt in the first position, and the other end of the actuation lock rod is kept positioned at the limit portion; The lever of the latching portion is pivotally connected to the shaft hole by a main shaft for swinging between the third to fourth positions, and when the lever is in the third position, the latching portion limits the first bolt to the first position And a second spring that is held in the third position to ensure that the lock bar locks the hook; if the hook is to be opened When the lever is operated to swing to the fourth position, the lock lever can be pulled to move the first bolt to the second position, and then the lock lever is rotated toward the hook hole to form a three-stage opening hook pattern. .

Therefore, the three-stage opening hook mode of the present invention can further improve the safety of use of the present invention, and is sufficient for the high-altitude use environment of the change to minimize the risk of accidental decoupling. In addition, the lock lever is at the latching hook. When subjected to side impact, The stress can be transmitted to the hook body through the limiting portion and the first bolt, so the invention has the advantages of stress dispersion, so as to effectively increase the hook opening and the extended locking rod in order to meet the structural safety requirements, so as to make the hook or The unhooking operation is smoother and faster.

10‧‧‧ hook body

10A‧‧‧ front

10B‧‧‧Back

10C‧‧‧ thickness

11‧‧‧ hook hole

110‧‧‧ hook mouth

12‧‧‧ 容容

13‧‧‧first slot

131‧‧‧First position

132‧‧‧second position

14‧‧‧Axis hole

15A‧‧‧First fixed tip

15B‧‧‧Second fixed tip

16‧‧‧second trough

17‧‧‧ hanging holes

18‧‧‧Limited

181‧‧‧ card slot

182‧‧‧ guiding slot

20‧‧‧Lock lever

21‧‧‧ lock plate

22‧‧‧ side panels

221‧‧‧ first hole

222‧‧‧ card block

223‧‧‧ second hole

23‧‧‧First bolt

24‧‧‧second bolt

25‧‧‧Assemble slot

26‧‧‧Turning Department

30‧‧‧First spring

31‧‧‧First presser foot

32‧‧‧Second presser foot

40‧‧‧Control lever

41‧‧‧End plate

42‧‧‧ visor

43‧‧‧ third hole

44‧‧‧ Spindle

45‧‧‧Card Department

451‧‧‧

50‧‧‧Second spring

51‧‧‧ Third presser foot

52‧‧‧Fourth presser foot

The first figure is an exploded schematic view of the present invention.

The second figure is a schematic view of the first combination of the partial control lever to the hook body.

The third figure is a schematic view of the combined appearance of the present invention.

The fourth figure is a schematic view of the partial section lock bar after the combination of the present invention.

The fifth figure is a schematic view of the partial section lock lever and the control rod after the combination of the present invention.

The sixth figure is a schematic diagram of the first stage of the pressing lever of the present invention.

The seventh figure is a schematic diagram of the second step of pulling the lock bar of the present invention.

The eighth figure is a schematic diagram of the third section of the opening of the hook hole by the present invention.

Referring to Figures 1-8, the present invention includes at least a hook body 10 defining a thickness 10C between the front face 10A and the rear face 10B and having a hook hole 11 extending through the thickness 10C, and the hook body 10 The side has a hook 110 connecting the inner and outer surfaces of the hook hole 11 , and the other side of the hook body 10 is recessed with a groove 12 extending through the thickness 10C; the hook body 10 is spaced apart from the first slot of the thickness 10C at one end of the hook opening 110 13. A shaft hole 14 and between the shaft hole 14 and the first groove 13 are provided with a first fixing tip 15A and a second fixing tip 15B protruding from the two faces 10A, 10B. The first groove 13 is defined There is a first position 131 close to the hook opening 110 and a second position 132 away from the hook opening 110, and the front side 10A and the rear side 10B of the hook body 10 are further provided with a connecting hook hole 11 in a symmetrical recess with the second position 132 as a center. The second groove 16 and, in addition, the bottom edge of the hook body 10 is provided with a hanging hole 17 penetrating the thickness 10C, the hanging hole 17 can be worn by the safety belt; in addition, the two sides 10A, 10B of the hook body 10 are more symmetrical to the hook opening The other end of the recessed edge is formed with a limiting portion 18, and the limiting portion 18 is composed of the intersecting slot 181 and the guiding slot 182, so that the slot 181 is axially matched with the first slot 13, as for guiding The guiding groove 182 is between the oblique connecting card slot 181 and the hook hole 11; a locking rod 20 having a locking plate 21 capable of closing the hook opening 110, and the front and rear sides of the locking plate 21 are more symmetrically folded upward There is a side plate 22 for forming a frame having a ㄇ-shaped cross section, and a first hole 221 communicating with the first groove 13 is provided at one end of the two side plates 22, so that the first hole 221 and the first groove 13 penetrate through the first hole a latch 23, the lock bar 20 can drive the first pin 23 to move along the first slot 13 between the first position 131 and the second position 132; the lock bar 20 has a free end and a card folded at opposite sides of the two side plates 22 222, when the first pin 23 is located at the first position 131, the locking bar 20 is interlocked with the locking block 222 and positioned in the slot 181 through the guiding slot 182, so as to lock the locking bar 20 to the hook port 110, but when When the latch 23 is moved to the second position 132, the lock lever 20 moves the latch block 222 to the guiding slot 182, so that the other end of the lock lever 20 is at the position of the release limiting portion 18 for being able to follow the guiding slot 182. An opening hook 110 that swings toward the hook hole 11; further, the two side plates 22 are symmetrically provided with second holes 22 for respectively mounting the second bolts 24. 3. When the first pin 23 is in the first position 131, the second pin 24 is located in the hook hole 11, but when the first pin 23 is in the second position 132, the two second pins 24 are relatively located Cutting into the position of the second slot 16, when the lock lever 20 swings toward the hook hole 11 centered at the second position 132, the second slot 16 can limit the second bolt 24 to swing about the second position 132, so as to make the The lock bar 20 can stably open the hook port 110 without colliding with the wall surface of the hook hole 11; further, the lock bar 20 is respectively provided with an assembly groove 25 on the lock plate 21 and the side plates 22, so that the assembly groove is provided. 25 is provided for the triggering portion 26 of the protruding locking plate 21 for providing us with the convenience of pulling the locking rod 20 and the rotating locking rod 20; a first spring 30 is wound around the first bolt 23 and is taken out The first presser foot 31 is elastically abutted on the first fixed tip 15A, and the second presser foot 32 is pushed up against the inner surface of the lock plate 21 by a predetermined elastic force, so that the first spring 30 is assembled on the hook. Between the body 10 and the lock bar 20, the first pin 23 is held in the first position 131, and the synchronous actuating block 222 is held in the slot 181; a lever 40 having a end matching the thickness 10C 41, and the front and rear sides of the end plate 41 are more symmetrically folded with a shutter 42 so as to form a frame of the 断面-shaped cross-section, so that the end plate 41 is located outside the cavity 12, and the two slats 42 are correspondingly inserted. Between the two side plates 22 and the two faces 10A, 10B of the hook body 10, the two shielding plates 42 are provided with a third hole 43 at a position corresponding to the shaft hole 14, so that a main shaft 44 can be provided through the coupling shaft hole 14 and the third portion. The hole 43 is configured to swing the control rod 40 between the third position and the fourth position with the main shaft 44 as a center; the two shutters 42 are symmetrically provided with the card-shaped portion 45 of the heart-shaped groove, so that the two ends of the first bolt 23 are inserted into the card. Crotch 45, and when the lever 40 is in the third position, the pocket 451 capable of actuating the side of the latch portion 45 limits the first bolt 23 to the first position 131, but when the lever 40 is in the fourth position, The first latch 23 can be actuated to release the first latch 23 so that the first latch 23 can move along the other side of the latch portion 45 between the first position 131 and the second position 132; and a second spring 50, The collar is wound around the two ends of the shaft hole 14, and a third presser foot 51 elastically abutting against the second fixing tip 15B is attached, and another one can push the inner surface of the end plate 41 with a predetermined elastic force. The four presser foot 52 is configured to assemble the second spring 50 between the hook body 10 and the lever 50 for holding the control lever 50 in the third position, thereby ensuring that the lock lever 20 is indeed at the position of the latching hook 110. .

When the present invention is to operate the lock lever 20 to open the hook port 110, the first stage of operation must be as shown in FIG. 6 to press the lever 40 to overcome the actuation of the second spring 50 by the control lever 40. The fourth position causes the latch portion 45 to release the first plug 23, and then the second operating lever 20 can be operated as shown in FIG. 7 to cause the lock lever 20 to move the first plug 23 to the second The position 132 and the block 222 are moved to the guiding groove 182. Finally, the third stage operation is to force the locking bar 20 to overcome the preset spring force of the first spring 30 as shown in the eighth figure, so that the locking bar 20 can be counterclockwise The hook hole 11 is rotated out of the guiding groove 182 to complete the three-stage opening hook port 110 operation mode.

Therefore, the present invention has at least the following advancements:

1. The invention must be operated through three stages of the lever 40 and the lock lever 20. The mode can open the hook hole, which can further prevent the problem of decoupling caused by the wrong touch rod, and strengthen the safety protection effect.

2. When the lock bar 20 of the present invention receives the side impact force, one end of the lock bar 20 transmits the stress to the hook body 10 through the first plug 23, and the other end transmits the stress to the hook body 10 through the block 222, and The first spring 30 can absorb a part of the stress, so the invention has the advantage of stress dispersion, so as to effectively increase the hook opening 110 and the extended locking rod 20 for the hooking or unhooking operation under the structural safety requirements. Smoother and faster.

In summary, the overall structural features of the present invention can be said to be unprecedented in the prior art, and are a rather outstanding and excellent design, and no similar invention or disclosure is found in the similar products. Published, it is in line with the application requirements of the invention patent, which is to apply according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and the equivalent variations and modifications made by the scope of the present invention are all within the scope of the present invention. .

10‧‧‧ hook body

10A‧‧‧ front

10B‧‧‧Back

10C‧‧‧ thickness

11‧‧‧ hook hole

110‧‧‧ hook mouth

12‧‧‧ 容容

13‧‧‧first slot

131‧‧‧First position

132‧‧‧second position

14‧‧‧Axis hole

15A‧‧‧First fixed tip

15B‧‧‧Second fixed tip

16‧‧‧second trough

17‧‧‧ hanging holes

18‧‧‧Limited

181‧‧‧ card slot

182‧‧‧ guiding slot

20‧‧‧Lock lever

21‧‧‧ lock plate

22‧‧‧ side panels

221‧‧‧ first hole

222‧‧‧ card block

223‧‧‧ second hole

23‧‧‧First bolt

24‧‧‧second bolt

25‧‧‧Assemble slot

26‧‧‧Turning Department

30‧‧‧First spring

31‧‧‧First presser foot

32‧‧‧Second presser foot

40‧‧‧Control lever

42‧‧‧ visor

43‧‧‧ third hole

44‧‧‧ Spindle

45‧‧‧Card Department

451‧‧‧

50‧‧‧Second spring

51‧‧‧ Third presser foot

52‧‧‧Fourth presser foot

Claims (9)

A three-section safety hook includes at least a hook body having a hook hole extending through a thickness, the hook hole further having a hook opening on a side of the hook body, the hook body being provided with a through thickness at an edge of the hook opening The shaft hole and the first slot are further provided with a limiting portion at the other end edge of the hook; a locking rod has a first bolt extending through the first slot at one end thereof, so that the locking rod can drive the first bolt along the first slot And moving between the first position and the second position, when the first pin is in the first position, the free end of the lock bar is positioned at the limiting portion, and when the first pin is in the second position, the free end of the lock bar is released. a position of the limiting portion; a first spring is mounted between the hook body and the lock bar for actuating the first bolt to be held in the first position, and the free end of the actuating lock lever is retained at the limiting portion; The lever is pivotally connected to the shaft hole by a main shaft for swinging between the third position and the fourth position. When the lever is in the third position, the latch portion limits the first bolt to the first position, but The first bolt can be released when the lever is in the fourth position; and a second spring is mounted between the hook body and the lever to actuate The rod is held in the third position to ensure that the lock rod locks the hook; if the hook is to be opened, the lever must be operated to swing to the fourth position, so that the lock rod can be pulled to move the first bolt to the second position, The forced lock lever is rotated toward the hook hole to form a three-stage open hook mode. The three-segment safety hook according to claim 1, wherein the hook body defines a first position close to the hook opening in the first groove, a second position away from the hook opening, and the hook body is further centered on the second position. a second slot connecting the hook hole; the lock rod is further mounted with a second bolt, and when the first bolt is in the first position, the second bolt is relatively located in the hook hole, but when the first bolt When in the second position, the second tether is located at a position that can be cut into the second slot, and the second slot can limit the second pin when the lock bar swings toward the hook hole at the center of the second position. The three-stage safety hook according to claim 2, wherein the lock bar has a lock plate capable of closing the hook mouth, and the front and rear sides of the lock plate are more symmetrically folded with one side plate, and one end edges of the two side plates are provided with the first bolt The first hole is mounted and a second hole for the second bolt is provided at an appropriate position. The three-segment safety hook according to claim 1, wherein the hook system defines a thickness between the front and the rear, and the front and the rear are more symmetrically disposed with a limiting portion at the other end edge of the hook opening, and the limiting portion is The intersecting card slot and the guiding groove are formed so that the card slot is matched with the axial direction of the first slot, and the guiding slot is obliquely connected between the card slot and the hook hole; the lock bar has a lock capable of closing the hook The front and rear sides of the lock plate are more symmetrically folded with one side plate, and the one end edges of the two side plates are provided with a first hole for the first bolt, and the other end of the lock bar is oppositely disposed with a card block. When the first bolt is in the first position, the interlocking block can be positioned in the card slot through the guiding slot for locking the hook of the locking bar, but when the locking bar is linked to the first pin to the second position, the card The block moves in the guiding groove so that the free end of the locking bar is in the release limit position. The three-section safety hook according to claim 3 or 4, wherein the hook system defines a thickness between the front and the rear, and a first fixing tip protruding from the front and the rear between the shaft hole and the first groove; A spring ring is wound around the first pin, and a first presser foot elastically abutting the first fixed pin is attached, and a second presser foot for pushing the lock plate with a predetermined elastic force is additionally connected. A three-stage safety hook as claimed in claim 1, 2, 3 or 4, the lever being external to the hook The side plate is provided with an end plate, and the front plate and the rear side of the end plate are more symmetrically folded with a shielding plate, and the two shielding plates are provided with a third hole for the spindle to be installed at a position corresponding to the shaft hole. The three-section safety hook according to claim 6, wherein the two shielding plates are symmetrically disposed with the locking portion of the heart-shaped groove, so that the two ends of the first bolt are inserted into the locking portion, and when the lever is in the third position, The slot of one side of the latching portion can be restrained to limit the first bolt to the first position. When the lever is in the fourth position, the slot can be actuated to release the first bolt, so that the first bolt can be along the click portion The other side moves between the first position and the second position. The three-stage safety hook according to claim 6, wherein the hook system defines a thickness between the front and the rear, and a second fixing tip protruding from the front and the rear between the shaft hole and the first groove; the second spring The collar is wound around the two ends of the shaft hole, and a third presser foot elastically abutting against the second fixed end is connected, and a fourth presser foot capable of pushing the end plate with a predetermined elastic force is additionally connected. The three-stage safety hook according to claim 1, 2, 3 or 4, wherein the lock lever is provided with a triggering portion for providing a pulling lock lever and a rotary lock lever.