JPH05237786A - Gripper - Google Patents

Abstract

PURPOSE:To provide a gripper which can be attached and detached easily without the generation of a stress strain as a reaction against a load near a spring and the opening of a grip piece, even if heavy load is applied in a degree not exceeding the material strength of a hook in a hang down direction. CONSTITUTION:A grip main body 10 is composed of a first grip piece 11 and a second grip piece 12, which are jointed by a support shaft 15 and closed by an energized spring 17. The first grip piece 11 and the second grip piece 12 have a first grip end 13 and a second grip end 14 formed in a protruded shape and a recessed shape respectively. The hook parts of both grip ends are overlaped so as to engage mutually and the upper part of the gripper becomes a ring shape at its closing time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gripper and, more particularly, to a hook portion of the gripper for improving the holding force against load.

[0002]

2. Description of the Related Art A conventional gripper is of a center aligning type in which two scissors having the same shape face each other and their tips come into contact with each other. Therefore, such a gripper fixes itself by inserting a rod-like cylinder or the like into a ring-shaped portion formed when the gripper is closed.

However, when the center-fitting type spring scissors are sandwiched between cylinders and the object is further hung under the gripper, the object is too heavy or is pulled by a wind or the like in a direction other than the downward direction. However, when the load is larger than the urging force of the spring, the two scissors that are in contact with each other start to open and come off from the column or the like.

Therefore, a recent gripper is composed of a grip piece having a hook-shaped tip for hooking on a column or the like and a slip-off preventing piece which comes into contact with the grip piece, and the slip-off preventing effect can be enhanced. did it.

[0005]

However, when a downward load such as hanging an object is applied to such a hook type gripper, the load is supported only by the grip piece having a hook-shaped tip. Therefore, a stress strain occurs in the vicinity of the spring due to the reaction against the load, and if the load is larger than the biasing force of the spring, the hook piece will start to open as in the case of the center aligning type gripper. It was

Further, since the hook type gripper serves as a retaining piece which is different from the grip piece having the hook-like tip, the grip pieces having the hook-like tip can be laid down. Otherwise, there was a drawback that it could not be attached to or removed from the rod.

The present invention has been made in view of the above problems, and an object thereof is to prevent the stress strain as a reaction against a load from being generated in the vicinity of the spring and to improve the strength of the material of the grip piece in the suspending direction. It is an object of the present invention to provide a gripper that can be easily attached and detached without causing the grip piece to start opening no matter how much load is applied to the gripper.

[0008]

In order to achieve the above objects, the grippers of the present invention are rotatably and commonly supported by a support shaft, each having a grip end at one end and a grip end at the other end. A gripper having first and second grip pieces and an urging spring for urging the grip ends in the closing direction, the grip ends having hook portions that are parallel to each other and overlap each other. Characterize.

[0009]

In the gripper according to the present invention having the above-mentioned structure, since the hook portion at the first grip end and the hook portion at the second grip end overlap so as to mesh with each other, a rod-like cylinder is formed. In the case of hanging on the same position, both hooks work together to prevent the gripper from slipping off against external force from all directions.

Further, since the hooks can be closed by overlapping with each other, the force for opening the grip generated by the load in the suspending direction is not generated.

Further, since the overlap is on the upper extension line in the suspending direction, it can be easily attached to and detached from the rod or the like by simply opening the first and second grip ends.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described with reference to the following drawings.

FIG. 1 shows a state in which the gripper according to the present invention is seen from the front, and FIG. 2 shows explanatory views showing hook portions at both grip ends and a closed state thereof.

As shown in FIG. 1, in the present invention, the gripper body 10 is composed of a first grip piece 11 and a second grip piece 12, both grip pieces being formed by plastic molding, and these are the first and second grip pieces. Also, the second grip piece is connected by the support shaft 15.

Further, the support shaft 1 for the first and second grip pieces.
In the central part of 5, there is a hole 1 penetrating the first and second grip pieces.
6 is formed, and a biasing spring 17 is provided near the hole 16 in a direction to close the hook portion at the grip end of the first grip piece and the second grip piece.

Further, the grip ends of the first grip piece 11 and the second grip piece 12 respectively have a first grip end 13 and a second grip end 14 which are formed in a concave and convex shape, respectively. The second grip end 13 and the second grip end 14 are overlapped with each other so as to mesh with each other at the hook portion.

As shown in FIG. 2, the characteristic feature of the present invention is that the hook portions of the first and second grip ends are closed so that they are engaged with each other, and both hook portions work together to make all the hooks. This is to give the gripper the action of preventing the gripper from coming off from the external force from the direction.

As a result, as shown in FIG. 2A, the first grip end hook portion 13b and the second grip end concave portion 14a and the first grip end concave portion 13a and the second grip end hook portion 14b are formed. Arranged to join.
Therefore, when both grip pieces are closed, as shown in FIG.
As shown in FIG. 3, the hook portions are engaged with each other and the hook portions overlap. The first grip end 13 and the second grip end 14 are closed by the urging force of the urging spring 17.

Since the embodiment of the present invention has the above-mentioned structure, when both grip ends are closed, they are overlapped by both hook portions. Therefore, when hanging on a column such as a rod, The force to open the grip generated by the load is not generated. Therefore, for example, when the gripper of the present invention is used by being dropped on a laundry rod, various uses can be considered. By attaching a metal fitting, a vinyl cord, a plastic chain, a string, etc. to the hole 16 in the gripper of the present invention, a hanger and small clothes can be hung under the gripper, and heavy laundry can be dried there. In addition, the laundry rods can be connected to each other by connecting cords using a plurality of grippers, and the laundry can be dried on the connecting cords, so that the laundry shed can be effectively used.

The gripper of the present invention can also be used as a pinch, and the gripping force is enhanced as compared with the conventional gripper due to the overlap.

[0021]

As described above, since the gripper of the present invention has the overlap structure in which the hook portion at the first grip end and the hook portion at the second grip end are closed so as to mesh with each other, a columnar shape like a rod. In the case of hanging in the same manner, since both hooks overlap each other, neither the force to open the grip generated by the load in the hanging direction nor the stress strain generated near the spring is generated.

Further, since the overlapping portion is on the upper extension line in the suspending direction, it can be easily attached to and detached from a column such as a rod simply by opening the first and second grip ends.

Further, since the first and second grip ends are hook-shaped, they do not come off even when they are hung by a wind or the like in a direction other than the downward direction when they are hung on a column such as a rod.

[Brief description of drawings]

FIG. 1 is a front view of a main body showing a preferred embodiment of a gripper according to the present invention.

FIG. 2 is an explanatory view showing a closed state of first and second grip ends of the gripper.

[Explanation of symbols]

 10 gripper main body 11 first grip piece 12 second grip piece 13 first grip end 14 second grip end 15 support shaft 16 hole 17 biasing spring

Claims (1)

[Claims] 1. A gripping end is formed at one end and a gripping end is formed at the other end, which are rotatably and commonly supported by a support shaft.
A gripper having a second grip piece and an urging spring for urging the grip ends in a closing direction, wherein the grip ends have hook portions that are parallel to and overlap each other.