TWI518023B - Improved self-locking safety hook - Google Patents

Description

Self-locking safety hook

The invention relates to a hook structure, in particular to a self-locking state in which a hanging object can be self-locking, and the self-locking safety hook which is accidentally opened due to an external force touch.

The connection, extension or fixation of the two objects can be utilized to hook the hook to achieve rapid device or separation. The earliest hooks are mainly provided with hook holes in a hook body, and the hook bodies are opposite to the hook holes. The middle section is provided with an opening that can be nested by a hook (such as a cable, or a chain, or another hook...) for attachment, extension, or stationary use. However, when the structures are slightly vibrated or actuated by external forces, the hooks may fall and there is a problem of insufficient safety.

Therefore, the hook body is developed to have a spring member spanned on the inner side of the opening, and one end of the spring member is pivoted over the hook body opening, and the pin member is positioned by a torsion spring so that one end of the torsion spring abuts the hook body. The other end pushes the spring member so that the free end of the spring member can be positioned to abut against the inner side of the hook body opening, thereby forming an elastic structure capable of unidirectionally closing the opening of the hook body; when the hook object is intended to be inserted into the hook hole, The hook object can be inserted into the hook hole only by pressing the spring member, and after releasing the external force of the spring member, the spring member is closed on the inner side of the opening by the elastic force of the torsion spring. When the hook is to be pulled out of the opening, it is limited by the spring. However, the conventional hook structure is not restricted in positioning when the hook body hangs a heavy object, and thus is still easily caused by an external force. When it is opened, the hooked object is dropped, and the safety of use is still insufficient. Therefore, it is necessary to improve it.

The present inventors have the problem of poor safety in use in view of the conventional safety hooks, and the present invention has been developed after many ideas and trial sample tests, and multiple corrections and improvements.

The present invention provides a self-locking safety hook, comprising: a hook body, a slide fastener and an elastic member, wherein the hook body has a base portion and a hook portion integrally extended from the base portion, the hook portion a hook hole is provided, and a first opening is formed on one side of the hook portion, and the sliding member is provided with a sliding sleeve hole extending through the opposite ends, and the sliding sleeve is sleeved on the hook The sliding member is slidable back and forth in the direction of the base, and the sliding member is provided with a perforation corresponding to the hook hole of the hook body, and the sliding member corresponds to one side of the first opening of the hook body The second opening and the closed portion are connected to the through hole, and the opposite side is provided with an abutting convex portion. The elastic member is disposed between the hook body and the sliding member, and is normally slidable against the sliding member to make the sliding The closed section of the fastener is aligned with the first opening of the hook body, and the first opening of the hook body is blocked by the closed section, so that the hook hole of the hook body is closed.

The main purpose of the present invention is that, in use, the hook member can be pushed into the hook hole of the hook portion in the direction of the base of the hook body, and the hook object can be inserted into the hook hole of the hook portion, and When the sliding fastener is released, the elastic member strikes the sliding member to automatically return to the hook hole of the hook in the original position, and when the heavy object is suspended, the sliding member can be prevented from slipping open by the hook. Therefore, it is completely unscrupulous due to the impact of external forces, and the utility model has the practical benefits of convenient operation and good safety.

1‧‧‧ hook body

11‧‧‧ base

111‧‧‧Fixed holes

12‧‧‧ hook

121‧‧‧ hook hole

1211‧‧‧

122‧‧‧ accommodating holes

123‧‧‧First opening

13‧‧‧Limited

2‧‧‧Sliding fasteners

21‧‧‧Sleeve hole

22‧‧‧Perforation

221‧‧‧Limited margin

23‧‧‧ Slider

24‧‧‧Installation holes

25‧‧‧second opening

26‧‧‧Closed section

27‧‧‧Resist the convex part

3‧‧‧Flexible parts

4‧‧‧hooked

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

The second drawing is a perspective view of the present invention.

The third figure is a plan view of the present invention.

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

The fifth figure is a schematic diagram of the action of opening and unloading the hook object of the present invention.

The sixth drawing is a schematic view showing the state of use of the hooked object of the present invention.

Figure 7 is a partial cross-sectional view showing another embodiment of the present invention.

The eighth figure is a schematic diagram of the opening action of another embodiment of the present invention.

Referring to the first, second, third and fourth figures, the present invention provides a self-locking safety hook, comprising: a hook body 1, a slide fastener 2 and an elastic member 3, wherein the The hook body 1 has a base portion 11 and a hook portion 12 integrally formed by the base portion 11. The base portion 11 is provided with a fixing hole 111. The hook portion 12 is provided with a hook hole 121 and a receiving hole 122. A limiting portion 13 is disposed at a portion of the hook hole 121 in the direction of the base portion 11. The hook hole 121 is provided with a concave arc-shaped receiving edge 1211 away from the end of the base portion 11. The fixing hole 111 and the receiving edge 1211 have a straight line. The first opening 123 of the hook hole 121 is disposed on the side of the hook portion 12, and the sliding member 2 is an annular sliding sleeve, and a sliding sleeve hole 21 is formed through the opposite ends. The sliding sleeve hole 21 is slidably disposed on the hook portion 12 of the hook body 1 so that the sliding fastener member 2 can slide back and forth in the direction of the base portion 1. The sliding fastener member 2 is provided with a pair of hooks and hooks 1 a through hole 22 of the hole 121, a sliding rod 23 passing through the receiving hole 122 of the hook body 1 and a mounting hole 2 for facilitating the sliding member 2 to be assembled on the hook body 1 4, the end of the hole 22 away from the base 11 of the hook body 1 is provided with a concave arc-shaped limiting edge 221, the limiting edge 221 and the receiving edge 1211 of the hook body 1 are in the direction of the linear pulling force, and the sliding edge The fastener 2 is provided with a second opening 25 and a closed section 26 communicating with the through hole 22 on one side of the first opening 123 of the hook body 1. The opposite side is provided with an abutting convex portion 27, and the elastic member 3 is disposed in the present embodiment. For example, a compression spring is disposed in the receiving hole 122 of the hook body 1 and is located between one end of the receiving hole 122 and the sliding rod 23 of the sliding member 2, and the elastic member 3 rebounds to the sliding state in a normal state. The fastener 2 is such that the closed section 26 of the slide fastener 2 is aligned with the first opening 123 of the hook body 1, and the first opening 123 of the hook body 1 is blocked by the closing section 26, so that the hook body 1 is hooked. The hole 121 is formed in a closed shape.

In use, as shown in the fifth and sixth figures, the sliding member 2 can be pushed and slid in the direction of the base portion 11 of the hook body 1 by the abutting convex portion 27 of the sliding fastener 2, and the limiting portion on the hook body 1 is utilized. 13 limiting the sliding position of the sliding fastener 2, so that the elastic member 3 is compressed by the sliding rod 23 of the sliding fastener 2, and the second opening 25 of the sliding fastener 2 is aligned with the first opening 123 of the hook body 1, the hook body 1 The first opening 123 is no longer blocked by the closed section 26 of the slide fastener 2 to form an open shape, that is, the user can be hooked by the first opening 123 (such as a steel cable, or a chain, or another hook. . . . hooked into the hook hole 121 of the hook body 1, and then the slide fastener 2 is released, and the elastic member 3 returns the elastic force to the spring fastener 2 to automatically return to the original position, thereby making the slide fastener 2 The closing portion 26 is opposite to the first opening 123 of the hook body 1. The closing portion 26 blocks the first opening 123 of the hook body 1, so that the hook hole 121 of the hook body 1 is closed, so that the hook is hooked. The object 4 cannot be detached, and when the receiving edge 1211 of the hook hole 121 of the hook body 1 supports the weight of the article hung by the hook 4, the limiting edge 221 of the through hole 22 of the sliding fastener 2 is subjected to the hooked object 4 Blocking and making the sliding fastener 2 can not slide the hook hole 121 of the hook body 1 in the direction of the base 11 of the hook body 1, effectively Avoid external force touching the slider 2 and causing mis-opening.

When the object to be hooked 4 is to be disassembled, the object to be hung by the hook 4 is first lowered, so that the hooked object 4 is in a relaxed state, and then the sliding member 2 is pushed by the abutting convex portion 27 of the sliding fastener 2 The base 11 of the hook body 1 pushes the sliding direction, and the limiting portion 13 on the hook body 1 restricts the sliding position of the sliding member 2, so that the elastic member 3 is compressed by the sliding rod 23 of the sliding fastener 2, and the sliding member 2 is The second opening 25 is aligned with the first opening 123 of the hook body 1. The first opening 123 of the hook body 1 is no longer blocked by the closed section 26 of the slide fastener 2 to form an open shape, that is, the user can An opening 123 is detached from the hook hole 121 of the hook body 1 by the hook 4.

Furthermore, the self-locking safety hook of the present invention can be configured as a compression spring as in the above embodiment, and as a torsion spring, as shown in the seventh and eighth figures, The elastic member 3 of the torsion spring is disposed between the hook body 1 and the sliding member 2, and is normally biased against the sliding member 2, so that the closing portion 26 of the sliding member 2 is aligned with the first of the hook body 1. The opening 123 is formed, and the first opening 123 of the hook body 1 is blocked by the closing portion 26, so that the hook hole 121 of the hook body 1 is closed, and the sliding member 2 can be pushed by the pressing protrusion 27 of the sliding member 2. Sliding in the direction of the base 11 of the hook body 1 , the position of the sliding member 2 is restricted by the limiting portion 13 on the hook body 1 , so that the elastic member 3 is deformed by the sliding fastener 2, and the sliding member 2 is The two openings 25 are aligned with the first opening 123 of the hook body 1. The first opening 123 of the hook body 1 is no longer blocked by the closed section 26 of the slide fastener 2 to form an open shape.

It can be seen from the above that when the self-locking safety hook of the present invention is used, the hooking hole 121 can be pushed by the sliding fastener 2 toward the base portion 11 of the hook body 1 to open the hook hole 121 of the hook portion 12, and the hooked object 4 is inserted into the hook. In the hook hole 121 of the portion 12, and when the slider member 2 is released, the elastic member 3 is elastically biased against the slider member 2 to automatically return to the hook hole 121 of the hook portion 12 in the original position, and when the self is When the lock safety hook is hung by the hook object 4, the limit edge 221 of the through hole 22 of the slide fastener 2 is blocked by the hook object 4, so that the slide fastener 2 cannot be moved to the hook body 1. The base portion 11 slides and opens the hook hole 121 of the hook portion 12 to form a self-locking state, so that it is completely prevented from being accidentally opened by the external force, and the utility model has the advantages of convenient operation and good safety of use.

1‧‧‧ hook body

11‧‧‧ base

111‧‧‧Fixed holes

12‧‧‧ hook

121‧‧‧ hook hole

1211‧‧‧

122‧‧‧ accommodating holes

123‧‧‧First opening

13‧‧‧Limited

2‧‧‧Sliding fasteners

21‧‧‧Sleeve hole

22‧‧‧Perforation

221‧‧‧Limited margin

23‧‧‧ Slider

24‧‧‧Installation holes

25‧‧‧second opening

26‧‧‧Closed section

27‧‧‧Resist the convex part

3‧‧‧Flexible parts

Claims (9)

A self-locking safety hook comprises: a hook body having a base portion and a hook portion, the base portion is provided with a fixing hole, and the hook portion is provided with a hook hole, and the hook hole is provided with a receiving hole away from one end of the base portion a force edge, the fixing hole and the force receiving edge have a straight line pulling direction, and the hook side is provided with a first opening communicating with the hook hole; a sliding fastener member is provided with a sliding sleeve hole penetrating the opposite ends The slide sleeve is slidably disposed on the hook portion of the hook body, so that the slide fastener member can slide back and forth in the direction of the base portion, and the slide fastener member is provided with a pair of holes for the hook hole of the hook body. The end of the first end of the hook body is provided with a limiting edge, and the limiting edge and the receiving edge of the hook body are in the direction of the linear pulling force, and the sliding fastener is disposed on one side of the first opening of the hook body. a second opening and a closed section connecting the perforation; and an elastic member disposed between the hook body and the sliding member, and resiliently striking the sliding member during normal state, so that the closed portion of the sliding member is aligned a first opening of the hook body, and the first opening of the hook body is blocked by the closed section, so that the hook body is hooked When the sliding member is slid in the direction of the base, the elastic member is deformed, and the second opening of the sliding member is aligned with the first opening of the hook body, so that the hook body The hook holes form an open shape. The self-locking safety hook of claim 1, wherein the hook portion of the hook body is integrally formed by the base portion. The self-locking safety hook of the first aspect of the invention, wherein the hook portion of the hook body is provided with a receiving hole, and the sliding member is provided with a sliding rod passing through the hook receiving hole. The self-locking safety hook of the third aspect of the invention, wherein the elastic member is disposed in the receiving hole, and is located at one end of the receiving hole and abuts between the sliding rod. The self-locking safety hook according to claim 1, wherein the hook body is provided with a limiting portion at a section of the hook hole toward the base. The self-locking safety hook of the first aspect of the invention, wherein the sliding fastener is provided with a mounting hole for facilitating the sliding component to be assembled on the hook body. The self-locking safety hook of the first aspect of the invention, wherein the sliding fastener is provided with an abutting protrusion on an opposite side of the second opening. The self-locking safety hook of claim 1, wherein the elastic member is a compression spring. The self-locking safety hook of claim 1, wherein the elastic member is a torsion spring.