TW201623815A - Safety hook with two-stage release structure - Google Patents

Abstract

A safety hook with two-stage release structure comprises a hook body, a rotatable fastener body and a lifting fastener member. A hook body has a hook part, a movable hole and an opening. A rotatable fastener body is pivoted with the said hook body by a shaft, comprising a tubular portion as a track on the side toward the said opening and a position hole. A lifting fastener member is set in the said tubular portion and is adjustable, having a restriction hole pivoted with a limited shaft, the said position hole and a movable hole. Therefore, a safety hook must be released by compressing and rotating the fastener device which, in addition, can be operated by one hand and hence both the security and convenience feature can be achieved.

Description

Two-stage open safety hook structure

The invention relates to a buckle, in particular to a two-stage open safety hook structure which can be accidentally opened due to external force extrusion and can be operated by one hand when opened.

In the environment of climbing, mountaineering, construction, etc., safety hooks are used to ensure the safety of personnel. The safety hooks are mainly used to connect the human body to fixed points through ropes for safety protection. When the user accidentally loses his foot, he can be pulled by the rope to prevent the user from falling down, and can easily and quickly work when fastening and unfastening the safety hook.

The traditional safety clasp is a one-piece clasp, which is easy to open due to external contact, and the safety of use is not good. Therefore, a two-stage safety switch clasp is created, as shown in the ninth figure. The utility model is a conventional two-stage opening safety hook, comprising: a hook body 10, a closing member 20 and a control handle 30, wherein the hook body 10 is provided with a through hole 101 at one end and a hook portion at the other end. The hook portion 102 is provided with an opening 103. The closing member 20 is pivotally coupled to the hook body 10, and a first spring 60 is disposed between the closing member 20 and the hook body 10 to close the hook. The member 20 can be elastically pivoted in the hook portion 102 by the first pivot 40 to close or open the opening 103. The control handle 30 is coupled to a second pivot 50 to pivot relative to the opening 103 of the hook body 10. a second spring 70 is disposed between the handle 30 and the hook body 10 to make the handle 30 The second pivot 50 is elastically pivoted on the outside of the hook portion 102. The end of the closure member 20 is provided with a limiting portion 201 along with the control handle 30. The limiting portion 201 is coupled to a limiting member 80. The control handle 30 has a transverse rail 301 and an arc-shaped longitudinal rail 302. The longitudinal rail 302 and the transverse rail 301 maintain a clear relationship, and the limiting member 201 of the closure member 20 is coupled to the transverse rail 301, so that the handle 30 is associated with the closure member 20.

In the normal state, the limiting member 80 is engaged with the end of the transverse rail 301 away from the longitudinal rail 302, so that the limiting member 80 is blocked by the lower side edge of the transverse rail 301, and the closing member 20 cannot be centered on the first pivot 40. Pivot. Only as shown in the tenth figure, the control handle 30 is pressed in the direction of the closure member 20, and the limiting member 80 is allowed to enter the longitudinal rail 302, so as to release the restriction function of the control handle 30 on the closure member 20, and the closure member 20 is oriented toward the control. The shank 30 is biased at an angle, and the driving restriction member 80 is displaced in the circumferential direction in the longitudinal rail 302 to open the opening 103 of the hook body 10.

It is not difficult to understand from the above description that when the opening 103 of the hook body 10 is to be opened, the control handle 30 and the closing member 20 are pressed and turned to the opposite side, so that the hook body 10 is subjected to the vertical control handle 30 when used. When the outer force of the closing member 20 is squeezed, the closing member 20 is pivoted at an angle, and the opening 103 of the hook body 10 is opened, causing a false opening situation, and there is a safety concern that the hook is dropped. In addition, in the opening action, the control handle 30 must be pressed by one hand, and the closure member 20 is pulled by the other hand to complete the opening 103 of the hook body 10. Therefore, it is inconvenient to operate with both hands when opening.

The present inventors have the disadvantages of poor safety in use and inconvenient use in view of the above-mentioned conventional two-stage opening safety hook, which is based on the idea of design and design, and has been tested and tested by many parties, and has been modified many times. After that, the invention is finally introduced.

The invention provides a two-stage opening safety hook structure, which comprises: a hook The main body, a rotating buckle piece and a lifting buckle member, wherein the hook body is provided with a perforation at one end and a hook portion at the other end, the hook portion is provided with an opening, and a movable hole is arranged at the opening near the perforation, and the movable hole is provided a fixed slot and a moving slot, the opening has a first end and a second end, the pivoting clip is pivotally coupled to the hook body with a pivot, so that the rotating clip can be in the hook with the pivot Elastically pivoting to close or open the first end of the opening, the rotating buckle is provided with a track and a long limiting hole along the opening direction of the hook, and the lifting fastener is disposed in the track of the rotating buckle, and Controlling the elastic movement in the direction of the rail, the lifting fastener is provided with a limiting hole and a limiting hole coupled to the long limiting hole of the rotating buckle and the movable hole of the hook body, and the long limiting hole and the limiting shaft limit the The telescopic length of the lifting fastener, the telescopic elastic movement of the lifting fastener is closed or opened at the second end of the opening, when the rotating buckle closes the first end of the opening and the lifting fastener closes the second end of the opening, Limiting the axis of the hole Elastic contraction while limiting the fixing groove, so that the rotation of the cleat and closing the opening of the safe lifting hook fastener body.

The main purpose of the present invention is to compress the lifting fastener so that the limiting shaft passing through the limiting hole is restricted from the fixing groove, so that the rotating buckle can pivotally pivot, thereby opening the opening of the hook body. The direction of compression of the lifting fastener is perpendicular to the pivoting direction of the rotating buckle, so that the opening of the hook body is accidentally squeezed by the external force when used, and the safety of use is improved.

The second object of the present invention is that when the opening of the hook body is opened, the lifting fastener can be compressed by one hand, and then the lifting fastener and the rotating buckle are pivoted together in the hook portion away from the opening direction, thereby opening the opening of the hook body. When it is turned on, it can be operated with one hand and the convenience of use is improved.

[study]

10‧‧‧ hook body

101‧‧‧Perforation

102‧‧‧ hook

103‧‧‧ openings

20‧‧‧Closed

201‧‧‧Limited Department

30‧‧‧Control handle

301‧‧‧ transverse rail

302‧‧‧ longitudinal rail

40‧‧‧First pivot

50‧‧‧second pivot

60‧‧‧First spring

70‧‧‧Second spring

80‧‧‧Limited parts

〔this invention〕

1‧‧‧ hook body

11‧‧‧Perforation

12‧‧‧ hook

13‧‧‧ openings

131‧‧‧ first end

132‧‧‧ second end

14‧‧‧ Activity hole

141‧‧‧fixed slot

142‧‧‧ moving trough

15‧‧‧ pivot hole

2‧‧‧Rotating clasps

21‧‧‧ pivot hole

22‧‧‧ Track

23‧‧‧Long restricted hole

24‧‧‧

3‧‧‧ Lifting clips

31‧‧‧Restricted holes

32‧‧‧Upper film

4‧‧‧ pivot

5‧‧‧Restricted axis

6‧‧‧Torque spring

7‧‧‧Compressed spring

The first figure is a perspective exploded view of the present invention.

The second figure is a three-dimensional combination of the present invention.

The third figure is a side view of the invention.

The fourth figure is a cross-sectional view of the present invention.

The fifth drawing is a side view of the compression lifting fastener of the present invention.

Figure 6 is a cross-sectional view of the compression lift fastener of the present invention.

The seventh drawing is a sectional view showing the opening state of the lifting fastener of the present invention together with the elastic locking of the rotary cleat.

The eighth figure is a schematic cross-sectional view showing the state in which the lifting fastener and the rotating clasp are automatically restored to the closed opening state.

The ninth figure is a side view of the conventional two-stage open safety clasp.

The tenth figure is a side view of the open state of the two-stage open safety clasp.

Referring to the first, second, third and fourth figures, the present invention is a two-stage open safety hook structure, the safety hook comprises: a hook body 1, a rotating buckle 2 and a lifting The fastener body 3 is provided with a through hole 11 at one end and a hook portion 12 at the other end. The hook portion 12 is provided with an opening 13 , and a movable hole 14 is defined in the opening 13 near the through hole 11 . A fixing groove 141 is disposed on a side of the opening 13 , and a moving groove 142 is disposed along the fixing groove 141 . The fixing groove 141 is deeper than the moving groove 142 , and a pivot hole is formed between the movable hole 14 and the through hole 11 . The opening 13 has a first end 131 and a second end 132. The rotating cleat 2 is provided with a pivot hole 21 for a pivot 4 to pass through a pivot hole 15 coupled to the hook body 1. A torsion spring 6 is disposed between the rotating cleat 2 and the hook body 1 so that the rotating cleat 2 can be disposed in the hook portion 12 The pivoting shaft 3 is elastically pivoted to close or open the first end 131 of the opening 13. In the normal state, the rotating cleat 2 is elastically biased in the direction of the opening 13 by the torsion spring 6 to close the opening 13 . The first end 131, the rotating cleat 2 is provided with a track 22 and a long limiting hole 23 along the opening 13 of the hook portion 12, and the long limiting hole 23 cooperates with the movable hole 14 of the hook body 1, the lifting buckle The piece 3 is disposed in the rail 22 of the rotating cleat 2, and the lifting clasp 3 is provided with an upper abutting piece 32. The rotating cleat 2 is provided with a lower abutting piece 24, the upper abutting piece 32 and the lower abutting piece A compression spring 7 is arranged in the 24th, so that the lifting fastener 3 can control the elastic movement in the direction of the rail 22, and in the normal state, the lifting fastener 3 is elastically biased away from the rotating buckle 2 by the compression spring 7, and The lifting fastener 3 is provided with a limiting hole 31 and a limiting hole 5 coupled to the long limiting hole 23 of the rotating buckle 2 and the movable hole 14 of the hook body 1. The long limiting hole 23 and the limiting shaft 5 limit the lifting buckle The telescopic length of the piece 3, the telescopic elastic member 3 is elastically movable to close or open the second end 132 of the opening 13 when the rotating clasp 2 is closed When the first end 131 of the opening 13 and the second end 132 of the opening 13 are closed, the limiting shaft 5 passing through the limiting hole 31 is elastically stretched and restrained at the fixing groove 141, so that the rotating buckle 2 is And the lifting fastener 3 securely closes the opening 13 of the hook body 1. The one end of the lifting fastener 3 is fastened to the outside of the second end 132 of the opening 13 of the hook body 1 to form a stable closed state, even if the hook body 1 is received When the rotary cleat 2 and the elevating clasp 3 are vertically pressed by the external force, the rotary clasp 2 cannot be pivoted, so that the erroneous opening is not caused.

When the opening 13 of the hook body 1 is to be opened, as shown in the fifth, sixth and seventh figures, the first end 131 of the opening 13 is compressed first to compress the lifting member 4 so as to pass through the restriction hole 41. The shaft 5 is disengaged from the fixing groove 141, and the lifting fastener 4 is elastically pivoted together with the rotating cleat 2 in the hook portion 12 with the pivot shaft 3 as an axis away from the opening 13 to make the torsion spring 6 The twisting is performed while the restricting shaft 5 is moved along the moving groove 142, thereby opening the opening 13 of the hook body 1.

Moreover, as shown in the eighth figure, in the state in which the opening 13 of the hook body 1 is opened, the lifting fastener 4 and the rotating cleat 2 are released, and the rotating clasp 2, together with the lifting clasp 4, is subjected to the elastic force of the torsion spring 6. Reversing the pivoting, during which the lifting shaft 4 is kept in a compressed state because the rotating shaft 2 is returned to the first position of the opening 13 in the original position. At the end 131, when the limiting shaft 5 is aligned with the fixing groove 141, the lifting and lowering member 4 is rebounded and returned to the original position by the elastic force of the compression spring 5, and the second end 132 of the opening 13 is closed, and the shaft 5 is restrained and fixed. The slot 141 is restrained such that the rotary cleat 2 and the lift fastener 3 automatically reclose the opening 13 of the hook body 1.

From the structure of the above specific embodiment, the following benefits can be obtained:

The two-stage open safety hook structure of the present invention is configured to compress the lifting fastener 3 toward the first end 131 of the opening 13, and the limiting shaft 5 of the limiting hole 31 of the lifting fastener 3 is detached from the fixing groove 141. Restricting, the rotating cleat 2 can be elastically pivoted with the lifting rod 4 by the pivot 4, thereby opening the opening 13 of the hook body 1. The direction of compression of the lifting clasp 4 and the pivoting direction of the rotating cleat 2 are The utility model is vertical, and thus is not crushed by an external force during use, thereby causing the opening 13 of the hook body 1 to be accidentally opened, and the use safety of the hook is improved.

2. The two-stage open safety clasp structure of the present invention, when the opening 13 of the hook body 1 is opened, the lifting fastener 4 can be compressed by one hand, and then the lifting fastener 4 together with the rotating cleat 2 are moved away from the hook portion 12. When the opening 13 is pivoted, the opening 13 of the hook body 1 can be opened, so that the one-hand operation can be performed when the opening is opened, and the ease of use is improved.

1‧‧‧ hook body

11‧‧‧Perforation

12‧‧‧ hook

13‧‧‧ openings

131‧‧‧ first end

132‧‧‧ second end

14‧‧‧ Activity hole

141‧‧‧fixed slot

142‧‧‧ moving trough

15‧‧‧ pivot hole

2‧‧‧Rotating clasps

21‧‧‧ pivot hole

22‧‧‧ Track

23‧‧‧Long restricted hole

24‧‧‧

3‧‧‧ Lifting clips

31‧‧‧Restricted holes

32‧‧‧Upper film

4‧‧‧ pivot

5‧‧‧Restricted axis

6‧‧‧Torque spring

7‧‧‧Compressed spring

Claims (4)

The utility model relates to a two-segment opening safety hook structure, which comprises: a hook body, one end is provided with a perforation, and the other end is provided with a hook portion, the hook portion is provided with an opening, and a movable hole is arranged at the opening near the perforation, the movable hole is A fixing groove is disposed on a side of the opening, and a moving groove is disposed along the fixing groove to the opening, the fixing groove has a depth greater than the moving groove, and the pivot hole is further provided with a pivot hole, and the opening has a first end And a second end; a rotating buckle piece, and a pivoting hole and a pivotal coupling hole pivotally coupled to the hook body, so that the rotating buckle can be elastically pivoted in the hook portion by the pivot to close Or opening the first end of the opening, the rotating buckle is provided with a track and a long limiting hole along the opening direction of the hook, the long limiting hole and the movable hole of the hook body, and a lifting fastener In the track of the rotating buckle, the elastic movement can be controlled in the direction of the track, and the lifting fastener is provided with a limiting hole, a limiting hole coupled to the rotating limiting piece and a movable hole of the hook body. Limit the hole and limit with the length Limiting the telescopic length of the lifting fastener, the lifting elastic member elastically moving to close or open the second end of the opening, when the rotating buckle closes the first end of the opening and the lifting fastener closes the second end of the opening The limiting shaft that is disposed in the limiting hole is elastically stretched and restrained in the fixing slot, so that the rotating buckle and the lifting fastener securely close the opening of the hook body, and one end of the lifting fastener is fastened to the outside of the second end of the opening When the lifting fastener is compressed, the restriction shaft penetrating the limiting hole is disengaged from the fixing groove, so that the rotating buckle is elastically pivoted by the pivoting shaft, and the limiting shaft is moved along the moving groove, thereby Open the opening of the hook body. The two-stage open safety hook structure according to claim 1, further comprising a torsion spring disposed between the hook body and the rotating buckle, so that the rotating buckle is often In the state of the hook, the torsion spring is biased toward the opening direction to close the first end of the opening. The two-stage opening safety hook structure according to claim 1, further comprising a compression spring disposed between the rotating buckle and the lifting fastener, so that the lifting buckle is normally received The compression spring snaps away from the rotating cleat. The two-stage opening safety hook structure according to claim 3, wherein the lifting buckle is provided with an upper abutting piece, and the rotating fastening piece is provided with a lower abutting piece, and the compression spring is assembled on the upper abutting piece. Between this and the next piece.