KR20140083519A - Hook - Google Patents

Abstract

The safety pin is hinged to the body and is made of a metal safety pin for opening and closing the opening portion and a contact portion for contacting the safety pin when the opening portion is blocked, And a magnet for magnetically fixing the safety pin so that the safety pin maintains the state of blocking the opening portion.

Description

Hook {Hook}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a hook, and more particularly, to a hook provided in a crane or the like to fix an object.

Generally, hooks are used to secure an object by hanging. For example, the hook is installed at the bottom of the crane to lift the heavy material through the wire rope. The hook includes a body having a hook-shaped body which is opened at one side, a safety pin which is hinged to the body and opens and closes the opening part, and an elastic force provided at the hinge coupling part to maintain the state that the safety pin blocks the opening part. . Therefore, the hook can prevent the wire rope from coming off using the safety pin.

The safety pin is repeatedly opened and closed for securing and releasing an object such as the wire rope. The elastic force of the spring may be deteriorated or the fatigue may be broken due to the repeated opening and closing of the safety pin. Therefore, if the opening / closing operation of the safety pin is repeated a predetermined number of times, it is necessary to replace the spring. Since the spring has an elastic force, it takes a lot of time to work when the spring is replaced. Also, frequent replacement of the spring may be costly. Further, there is a risk that the spring is sharp and the worker is injured.

The present invention provides a hook that allows the safety pin to remain in a blocked state by a magnetic force.

The hook according to the present invention includes a body having a hook shape with one side opened, a safety pin made of a metallic material hinged to the body to open and close the opening portion, and a contact portion at which the safety pin contacts the body when the open portion is blocked And a magnet for magnetically fixing the safety pin so that the safety pin maintains the state of blocking the opening portion.

According to one embodiment of the present invention, the magnet may be inserted into an opening formed in the body.

According to one embodiment of the present invention, the magnet can be constrained to the opening.

According to one embodiment of the present invention, the magnet may be bonded to the opening with an adhesive.

According to one embodiment of the present invention, the magnet can be fixed by the set screw while being inserted into the opening.

According to one embodiment of the present invention, the magnet may be a permanent magnet or an electromagnet.

The hook according to the present invention uses a magnet provided on the body to keep the safety pin in a state where the opening portion of the body is blocked. Therefore, even if the safety pin is repeatedly opened and closed, it is not necessary to replace the magnet, so that it is possible to prevent the loss of cost and time due to the replacement of the magnet. Further, since there is no danger of the operator being injured by the magnet, safety of the operator can be ensured.

1 is a side view for explaining a hook according to an embodiment of the present invention.
FIGS. 2 to 5 are cross-sectional views illustrating a state where the magnet shown in FIG. 1 is provided on the body.

Hereinafter, a hook according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The present invention is capable of various modifications and various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. In the accompanying drawings, the dimensions of the structures are enlarged to illustrate the present invention in order to clarify the present invention.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, the terms "comprises", "having", and the like are used to specify that a feature, a number, a step, an operation, an element, a part or a combination thereof is described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.

1 is a side view for explaining a hook according to an embodiment of the present invention.

Referring to FIG. 1, the hook 100 includes a body 110, a safety pin 120, and a magnet 130.

The body 110 has a hook shape with one side opened. An object such as a wire rope or a ring can be easily hooked to the body 110 through the opening portion or the object can be easily removed from the body 110. [ Also, since the body 110 is mainly used for lifting a heavy object, the body 110 is preferably made of a metal material or an alloy material. Meanwhile, the body 110 may be made of an insulating material such as plastic.

The body 110 has a connecting portion 112 at its end. The connecting portion 112 is for connecting the body 110 to a crane or the like, and may have various shapes. For example, the connecting portion 112 may have a ring shape, a hook shape, or the like.

The body 110 has a protrusion 114 protruding inward at a portion where the connection portion 112 is provided.

The safety pin 120 is hinged to the body 110 to open and close the opening of the body 110. Specifically, the safety pin 120 has a substantially bar shape, and one end of the safety pin 120 is hinged to the protrusion 114 of the body 110. The safety pin 120 rotates in a counterclockwise direction about the hinge axis and the other end of the safety pin 120 opposite to the one end contacts the body 110 to block the opening portion of the body 110. When the open portion of the body 110 is blocked, the object held on the body 110 can be prevented from being detached from the body 110.

The safety pin 120 is rotated clockwise around the hinge axis so that the other end of the safety pin 120 is separated from the body 110 to open the opening portion of the body 110. When the open portion of the body 110 is opened, the object hooked on the body 110 can be removed from the body 110 or the object can be hooked to the body 110.

The safety pin 120 may be made of a metal material or a metal alloy material so as to be attached to the magnet 130.

The magnet 130 is mounted on the body 110 and fixes the safety pin 120 by a magnetic force so that the safety pin 120 maintains a state where the opening portion of the body 110 is blocked. More specifically, the magnet 130 may be provided at a contact portion where the other end of the safety pin 120 touches the body 110 when the safety pin 120 blocks the opening portion of the body 110. The magnet 130 may be a permanent magnet or an electromagnet. When the magnet 130 is an electromagnet, a wire for supplying current to the magnet 130 through the inside of the body 110 may be additionally provided.

When the electric current is supplied to the magnet 130 through the electric wire, the magnet 130 can secure the safety pin 120, and the safety pin 120 can block the opening portion of the body 110. When the current supplied to the magnet 130 is cut off through the electric wire, the safety pin 120 can not open the opening portion of the body 110 because the magnet 130 can not fix the safety pin 120.

Since the safety pin 120 is fixed using the magnet 130, the magnetic force of the magnet 130 is not reduced even when the safety pin 120 is repeatedly opened and closed. Therefore, the magnet 130 does not need to be replaced, and can be used semi-permanently. In addition, the cost and time required for replacing the magnet 130 can be saved.

FIGS. 2 to 5 are cross-sectional views illustrating a state where the magnet shown in FIG. 1 is provided on the body.

Referring to FIG. 2, the body 110 has an opening 110a at the contact portion, and the magnet 130 can be inserted into the opening 110a. The magnet 130 can be firmly fixed so as not to be detached from the opening 110a. In one example, the magnet 130 may be inserted and fixed in the aperture 110a in an interference fit manner. As another example, the magnet 130 may be inserted into the opening 110a and bonded and fixed with an adhesive.

Referring to FIG. 3, the body 110 has an opening 110a at the contact portion, and a thread is provided at an inner surface of the opening 110a. The magnet 130 is fixed by fastening the set screw 132 to the opening 110a while the magnet 130 is accommodated in the opening 110a. Therefore, the magnet 130 can be stably fixed to the opening 110a. At this time, the set screw 132 may have a through hole at the center. The magnet 130 can be exposed through the through hole of the set screw 132 and the magnet 130 can more securely fix the safety pin 120. [

Referring to FIG. 4, the body 110 has an opening 110a formed at a portion opposite to the contact portion to a position adjacent to the contact portion. The inner surface of the opening 110a is provided with a thread. The magnet 130 is fixed by fastening the set screw 132 to the opening 110a while the magnet 130 is accommodated in the opening 110a. Therefore, the magnet 130 can be stably fixed to the opening 110a.

On the other hand, the opening 110a may extend to the contact portion, and the entrance located at the contact portion may have a stepped shape so that the magnet 130 is not released. That is, the cross-sectional area of the inlet located at the contact portion in the rod 110a is smaller than the cross-sectional area of the magnet 130. [ Thus, the magnet 130 can be exposed through the opening 110a, and the magnet 130 can secure the safety pin 120 more strongly.

Referring to FIG. 5, the body 110 has an opening 110a penetrating from the contact portion to a portion opposite to the contact portion. The inner surface of the opening 110a is provided with a thread. The magnet 130 is fixed by fastening the set screw 132 to both sides of the opening 110a while the magnet 130 is accommodated in the opening 110a. Therefore, the magnet 130 can be stably fixed to the opening 110a.

At this time, the set screw 132, which is fastened to the opening 110a of the contact portion, may have a through hole at the center. The magnet 130 can be exposed through the through hole of the set screw 132 and the magnetic force of the magnet 130 can be more easily transmitted to the safety pin 120 when the magnet 130 fixes the safety pin 130 have.

3 to 5, the set screw 132 is preferably made of a metal material, and may be made of a plastic material if necessary. Further, although the magnet 130 is described as being simply inserted into the opening 110a, a thread may be formed on the side surface of the magnet 130 so as to be fastened to the opening 110a. Therefore, since the magnet 130 is once again fixed to the set screw 132 in a state where it is fixed to the opening 110a, it is possible to prevent the magnet 130 from being separated from the opening 110a by vibration or the like.

Since the magnet 130 is fixed by the set screw 132, the magnet 130 can be easily removed from the body 110 or can be easily replaced with another magnet 130 by unscrewing the set screw 132 .

As described above, the hook according to the present invention can use a magnet provided on the body instead of the spring, so that the safety pin can keep the open part of the body blocked. Therefore, even if the safety pin is repeatedly opened and closed, it is not necessary to replace the magnet, so that it is possible to prevent the loss of cost and time due to the replacement of the magnet. Further, since there is no danger of the operator being injured by the magnet, safety of the operator can be ensured.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims. It can be understood that it is possible.

100: hook 110: body
120: Safety pin 130: Magnet

Claims (6)

A body having a hook shape with one side opened;
A safety pin made of a metal material hinged to the body to open and close the opening portion; And
And a magnet provided at a contact portion where the safety pin comes in contact with the body when the opening portion is blocked, and which fixes the safety pin with a magnetic force so that the safety pin keeps the state of blocking the opening portion. The hook according to claim 1, wherein the magnet is inserted into an opening formed in the body. 3. The hook of claim 2, wherein the magnet is constrained to the opening. 3. The hook of claim 2, wherein the magnet is bonded to the opening with an adhesive. The hook according to claim 2, wherein the magnet is fixed by a set screw while being inserted into the opening. The hook according to claim 1, wherein the magnet is a permanent magnet or an electromagnet.

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