TW201533335A - Safety hook - Google Patents

Abstract

The present invention comprises a hook body, a lock lever, a main spring and a control lever assembly. The hook body comprises a hook hole penetrating the thickness thereof, a first shaft hole, a guiding groove, and a hook entry communicating the inner and outer sides of hook hole. The guiding groove is configured to be an arc shape with the first shaft hole to be the center of circle, and is further configured with an engaging portion with a protrusion thickness. The lock lever is configured with side plates covering the guiding groove along the hook body thickness, and the two side plates are further provided with engaging edges matched with the engaging portion. A first guide hole is coupled with a guide pin penetrating the guiding groove to enable the lock lever rotating around the guide pin and swinging in an arc shape along the guiding groove to open and close the hook entry. When the lock lever closed the hook entry, the engagement portion and the guide pin can form a dead chain for bearing the side impact of the lock lever. The main string can activate the lock lever to make the engaging edge abutting against the engaging portion to keep the lock lever closing the hook entry. The control lever utilizes a main shaft to be coupled with the first shaft hole, and is further configured with a second guide hole to be coupled with the guide pin. Thus, when the lever is linked with the lock lever rotating around the guide pin and swinging in an arc shape along the guiding groove, it can drive the engaging edge to release the engaging portion so that the lock lever can swing to open the hook entry.

Description

Safety hook

The invention provides a safety hook, in particular, a novel technology capable of effectively increasing the hook opening and lengthening the locking rod in accordance with structural safety requirements, thereby making the overall operation more rapid and convenient.

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.

Therefore, the inventors have developed the US Patent No. 8117721 "Hook Safety Device" invention patent, and because of its remarkable effect, the market has responded well, but the inventor still does not complacent, and found that the lock bar is in the case. When receiving the side impact force, the side impact force can only be transmitted to the hook body by a click portion, which is easy to stress concentration, and the length of the lock rod is greatly limited, so the hook mouth cannot be correspondingly enlarged, so that we are When engaging in hooking or unhooking, it cannot be put in place at one time, which not only increases the trouble of operation, but also greatly affects the value of the product.

In view of this, the present inventors have carefully researched and improved, and finally developed a invention capable of effectively increasing the hook opening and lengthening the locking bar to make the hooking or unhooking operation smoother and faster.

The invention provides a safety hook comprising at least: a hook body having a hook hole penetrating through the thickness, a first shaft hole, a guide groove and a hook opening connecting the inner and outer sides of the hook hole, wherein the guide groove is arranged in an arc shape with the first shaft hole as a center, and another protrusion is provided a latching portion of the thickness; a locking bar having a side plate covering the guiding groove along the thickness of the hook body, the two side plates further having a card edge matching the latching portion, and the first guiding hole is coupled to the through guiding slot The guiding bolt is such that the locking rod rotates around the guiding bolt and the opening and closing hook opening which oscillates along the guiding groove, and when the locking rod locks the hook opening, the locking portion and the guiding bolt can form a chain to bear the locking rod side collision a force, and a main spring actuates the lock bar to abut the latching hook of the latching portion of the latching portion; and a lever coupled to the first shaft hole by a spindle, and The second guiding hole is coupled to the guiding pin, so that when the interlocking locking bar rotates around the guiding pin and swings along the guiding groove, the control rod can drive the card edge to release the latching portion, so that the locking bar can swing and open the hook opening.

Therefore, when the locking bar of the present invention is subjected to the impact side of the locking hook, the stress can be transmitted to the hook body through the latching portion and the guiding bolt, and the main spring absorbs a part of the stress, so the invention has the stress. The advantage of dispersion, in order to meet the structural safety requirements, effectively increase the hook and lengthen the lock bar to make the hook or unhook operation smoother and faster.

10‧‧‧ hook body

10A‧‧‧ front

10B‧‧‧Back

10C‧‧‧ thickness

11‧‧‧ hook hole

110‧‧‧ hook mouth

12‧‧‧ 容容

120‧‧‧ openings

13‧‧‧ mouthpiece

131‧‧‧ mouth slot

132‧‧‧ mouth block

14‧‧‧First shaft hole

15‧‧‧ Guide slot

16‧‧‧Bolt hole

17‧‧‧ hanging holes

20‧‧‧Card Department

30‧‧‧Lock lever

31‧‧‧ lock plate

311‧‧‧ alignment block

312‧‧‧ buckle groove

313‧‧‧ slotting

32‧‧‧ side panels

33‧‧‧First guide hole

34‧‧‧ Guide bolt

35‧‧‧ card edge

36‧‧‧Maintenance section

37‧‧‧ arc

38‧‧‧Main spring

381‧‧‧First presser foot

382‧‧‧Second presser foot

40‧‧‧Control lever

41‧‧‧End plate

42‧‧‧ visor

43‧‧‧Second shaft hole

44‧‧‧ Spindle

45‧‧‧Second guide hole

46‧‧‧榫孔

47‧‧‧Carmen

48‧‧‧Second spring

481‧‧‧ Third presser foot

482‧‧‧Fourth presser foot

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

The second figure is a schematic view of the combination of the lock bar and the hook body of the present invention.

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

The fourth figure is a schematic front view of the combination of the present invention.

The fifth drawing is a partial cross-sectional view of the combination of the present invention.

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

The seventh figure is a schematic diagram of the second action of the pressing lever of the present invention.

The eighth figure is a schematic view of the action of fully opening the hook opening of the present invention.

Referring to the first to fifth figures, 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 and a receptacle 12 extending through the thickness 10C; One side of the hook body 10 has a hook opening 110 communicating with the inside and the outside of the hook hole 11, and one end of the hook opening 110 is formed by a nozzle seat 13 having a mouth slot 131 opening toward the hook hole 11, and between the nozzle slot 131 and The nozzle block 132 between the hooks 110; the other side of the hook body 10 has an opening 120 connecting the pockets 12, the opening 120 is disposed opposite to the hook opening 110, and the hook body 10 is provided with a through thickness below the pocket 12. a first shaft hole 14 of 10C, and a curved guide groove 15 penetrating the thickness 10C is provided at the other end edge of the hook opening 110 with the first shaft hole 14 as a center, and the two ends of the guide groove 15 are closed, and The hook body 10 is further provided with a bolt hole 16 extending through the thickness 10C between the first shaft hole 14 and the guide groove 15, and the bottom edge of the hook body 10 is provided with a hanging hole 17 penetrating the thickness 10C, and the hanging hole 17 is safe for use. The strap portion 20 is disposed on the bolt hole 16 and the two ends of the latch portion 17 are symmetrically protruded by a thickness 10C, and the latch portion 17 can also be directly connected. Formed on the hook body 10; a lock bar 30, which is a frame of a generally ㄇ-shaped cross section, and has a lock plate 31 closing the hook port 110, and one end of the lock plate 31 has a hook hole 11 toward the hook port 110 The alignment block 311 of the insertion nozzle slot 131 and the buckle slot 312 for the nozzle block 132 are inserted, so that one end of the lock lever 30 can be positioned on the nozzle seat 13, and the other end edge of the lock plate 31 is provided with a thickness of 10C. The matching slot 313 is configured to be movable along the thickness 10C, and the other end edge of the lock plate 31 is further provided with a side plate 32 covering the front and rear of the guide groove 15. The two side plates 32 are respectively provided with a first guide hole at the upper end of the guide groove 15. 33, the first guiding hole 33 is provided with a guiding bolt 34 coupled, and the guiding bolt 34 is passed through the upper end of the guiding groove 15, so that the locking rod 30 can be rotated through the guiding bolt 34, and the guiding bolt 34 can be along the guiding groove 15 The multiplication of the arc-shaped swing enables the lock lever 30 to open and close the hook port 110 more quickly, and when the lock lever 30 closes the hook port 110, the two side plates 32 have a card that can abut against the latch portion 20. The rim 35 is configured such that when the lock lever 30 receives the side impact force, the lock lever 20 and the hook body 10 form a chain structure for transmitting the stress directly to the hook body 10 through the latch portion 20 and the guide bolt 34. In addition, the two side plates 32 are further connected with a retaining portion 36 from the card edge 35, and an arc segment 37 is arranged at the top end of the retaining portion 36. The arc segment 37 is arranged in an arc shape with the guide hole 33 as a center; The main shaft 38 is wound around the outer circumference of the bolt 10 at a thickness 10C and the two side plates 32. The main spring 38 is connected with a first presser foot 381 which elastically abuts against the wall surface of the hook hole 11, and another can be preset. The second presser foot 382 on the inner surface of the lock plate 31 is elastically pushed, and the positioning block 311 and the buckle groove 312 can be correspondingly positioned to position the nozzle groove 131 and the mouth block 132, and The card edge 35 is held to abut the latching portion 20 for ensuring that the locking bar 30 effectively latches the hook opening 110; a lever 40 is a frame having a substantially 断面-shaped cross section, and the other side of the hook body 10 is disposed The end plate 41 is matched with the opening 120 of the receiving slot 12, and the control rod 40 is further provided with two shielding plates 42 along the outer side of the two side plates 32 so as to cover the first shaft hole 14 and the bolt hole 16 and The first guide hole 33, the two shutters 42 are disposed at a position corresponding to the first shaft hole 14 to provide a second shaft hole 43 so as to provide a main shaft 44 for coupling, and the two shutters 42 are separately provided for guiding. The second guiding hole 45 is coupled to the second guiding hole 45, and a corresponding hole 46 is disposed at a position corresponding to the guiding groove 15. The opening 46 is coupled to a latch 47, and the latch 47 is inserted through the guiding slot 15, When the lock lever 30 locks the hook 110, the latch 47 is abutted against the other ends of the two side plates 32, so that the lock lock lever 30 does not sway toward the guide pin 34; and the main shaft 43 has a thickness of 10 C and two shades. The second spring 48 is wound around the outer circumference of the plate 42 respectively, and the second spring 48 is connected with a third presser foot 481 which can elastically abut against the wall surface of the receiving slot 12, and another push-up end which can be pushed by a predetermined elastic force. a fourth presser foot 482 on the inner surface of the plate 41, The end plate 41 is away from the other side of the hook body 10 to maintain the elastic engagement with the opening 120, and the card edge 36 can be urged against the latching portion 20 for further securing the locking bar 30 to close the hook opening 110.

Please cooperate with the sixth, seventh and eighth diagrams. When the first stage of the person presses the lever 40 to overcome the actuating lock lever 30 of the second spring 46, the lock lever 30 is rotated around the guide bolt 34 and guided along the guide. The slot 15 is swayed in an arc to drive the card edge 36 to release the latch portion 20, and the latch 47 releases the other end of the two side plates 32, and then the retaining segment 3 is 7 can be moved along the limit of the latching portion 20 for maintaining the lock lever 30 to close the hook 110 as shown in the sixth figure, and waiting for the second section to press the lever 40, as shown in the seventh figure. When the arc segment 38 is opposite to the latch portion 20, the lock lever 30 can be completely released. As shown in the eighth figure, the person can push the lock lever 30 by the guide bolt 34, the arc segment 38 and the latch portion 20. The double guiding function enables the locking rod 30 to stably and quickly open the opening hook 110 of the hook hole 11. Therefore, the present invention must be applied to the control rod 40 and the locking rod 30 respectively by the hands to open the hook opening 110, which is effective. A dangerous situation in which the touch lever 40 or the lock lever 30 is accidentally opened to open the hook 110 is generated.

More importantly, the present invention can transmit the stress to the hook body 10 through the latch portion 20 and the guide pin 34 when the lock lever 30 locks the receiving side impact force of the hook opening 110, and the main spring 35 and the second spring 46 are transmitted. The invention can also absorb a part of the stress, so the invention has the advantages of stress dispersion, so as to effectively increase the hook opening 110 and the extended locking rod 30 in accordance with the structural safety requirements, so as to make the hooking or unhooking operation smoother and fast.

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

12‧‧‧ 容容

120‧‧‧ openings

13‧‧‧ mouthpiece

14‧‧‧First shaft hole

15‧‧‧ Guide slot

17‧‧‧ hanging holes

20‧‧‧Card Department

30‧‧‧Lock lever

31‧‧‧ lock plate

313‧‧‧ slotting

32‧‧‧ side panels

33‧‧‧First guide hole

34‧‧‧ Guide bolt

35‧‧‧ card edge

36‧‧‧Maintenance section

37‧‧‧ arc

40‧‧‧Control lever

41‧‧‧End plate

42‧‧‧ visor

43‧‧‧Second shaft hole

44‧‧‧ Spindle

45‧‧‧Second guide hole

46‧‧‧榫孔

47‧‧‧Carmen

48‧‧‧Second spring

481‧‧‧ Third presser foot

482‧‧‧Fourth presser foot

Claims (9)

A safety hook includes at least a hook body having a hook hole extending through a thickness, a first shaft hole, a guide groove, and a hook opening communicating with the inner and outer sides of the hook hole, the guide groove being centered by the first shaft hole It is arranged in an arc shape, and is provided with a protruding portion of a protruding thickness; a locking rod is provided with a side plate covering the guiding groove along the thickness, and the two side plates further have a card edge matching the locking portion, and the first guiding The hole is coupled with a guiding bolt extending through the guiding groove, so that the locking rod rotates around the guiding bolt and the opening and closing hook opening that oscillates along the guiding groove, and the locking portion and the guiding bolt can be formed when the locking rod locks the hook opening The chain is subjected to the side impact force of the lock bar; a main spring is used to actuate the lock bar so that the card edge abuts the latching hook of the latching portion of the latching portion; a lever is coupled to the first by a spindle The shaft hole is further provided with a second guiding hole for coupling the guiding bolt, so that when the interlocking locking rod rotates around the guiding bolt and swings along the guiding groove, the control rod can drive the card edge to release the locking portion, so that the locking rod can Swing the opening hook. The safety hook according to claim 1, wherein the control rod is provided with a boring hole at a position corresponding to the guide groove, the boring is coupled to the yoke, and the yoke is inserted through the guiding groove; the locking rod is at the locking hook When the mouth is made, the card 抵 is abutted on the other end of the two side plates to ensure that the locking lock bar does not sway in the direction of the guide bolt, but after the control lever is pressed against the second spring, the lock bar can be linked. The bolt rotates and oscillates along the guide groove to simultaneously drive the card edge to release the latch portion and the card release the other ends of the two side plates. The safety hook according to claim 1, wherein the two sides of the board are connected by the card edge with a retaining section, and the retaining section is connected with an arc segment, wherein the arc segment is set with the guide hole as a center; After the card edge is released, the retaining segment can be moved along the limit of the latching portion to maintain the locking bar latching hook. When the arc segment is opposite to the latching portion, the locking bar can be released. An opening hook that guides the lock lever to swing toward the hook hole. The safety hook according to claim 1, wherein the hook body is provided with a bolt hole extending through the thickness for providing the hook portion assembly. The safety hook according to claim 1, wherein the main spring ring is wound around the guide pin between the thickness and the two side plates, and the other is connected with a first presser foot which can elastically abut against the wall surface of the hook hole, and another energy source is connected. Push the second presser foot of the lock lever with the preset spring force. The safety hook according to claim 1, 2, 3, 4 or 5, the hook body has a hook opening communicating with the inner and outer sides of the hook hole, and one end of the hook is formed by a mouth seat, and the guide groove is connected with the first shaft The hole is arc-shaped at the other end of the hook, and a protruding portion of the clamping portion is disposed between the first shaft hole and the guiding groove; one end of the locking rod can be positioned at the mouth seat, and the other end edge is along The thickness is provided with a side plate covering the front and the rear of the guide groove; the control rod is provided with an end plate on the other side of the hook body, and the end plate is provided with a cover plate covering the first shaft hole, the clamping portion and the first guiding hole along the outer side of the two side plates The two shutters are coupled to the first shaft hole by a main shaft, and the second guide hole for coupling the guide bolts. Further, a second spring capable of actuating the end plate away from the other side of the hook body is further provided. It is used to urge the card edge to abut the card portion. The safety hook according to claim 6, wherein the mouth of the mouth has a mouth groove opening toward the hook hole, and a mouth piece between the mouth groove and the hook mouth; the lock bar has a lock plate closing the hook mouth, and the lock plate has one end at the lock plate The alignment block inserted into the nozzle slot can be swung from the hook hole toward the hook opening, and the buckle slot corresponding to the nozzle block can be inserted to position one end of the lock lever on the nozzle seat. The safety hook according to claim 6, wherein the hook body is further provided with a groove extending through the thickness. The other side of the hook body has an opening for connecting the groove, the opening is opposite to the hook opening, and the first shaft hole is disposed between the groove and the guide groove, and the end plate of the control rod is transmitted through the second The spring is actuated to fit the position of the opening to provide us with a press. The safety hook according to claim 6, wherein the second spring ring is wound around the main axis between the thickness and the two shutters, and the other is connected with a third presser foot elastically abutting against the wall surface of the receiving groove, and another one is connected. The fourth presser foot of the inner surface of the end plate can be pushed by the preset elastic force.