JP2011240414A - Weight gripper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a weight gripper which does not need to be strongly pressed even if holding a heavy weight, can stably grip a weight even if moving the weight, and can easily perform a weight gripping operation.SOLUTION: The weight gripper includes a cylindrical support member 1 and a pair of holding members 2 each of which is formed in a semi-cylindrical shape having a hollow therein and has elasticity. The support member is held between the pair of holding members, and fitted to the semi-cylindrical hollow parts of the holding members so that the support member can be connected to the proximal ends of the holding members. The distance between both remote ends of the holding members is increased due to the elastic deformation thereof using a connection part 3 as a fulcrum. A projection 6 which projects inward and extends in the direction perpendicular to the axis of the semi-cylindrical shape is formed on the inner peripheral surface of each of the semi-cylindrical hollow parts of the holding members at the remote ends. When a distance between the remote ends of the holding members is decreased, the projections 6 are fitted into the neck of the weight for holding the weight.

Description

  The present invention relates to a weight gripping tool. More specifically, the present invention relates to a weight gripper capable of easily and reliably gripping a heavy weight.

When a weight is touched with bare hands, oil and fat and sweat salinity adhere to it and cause mass changes due to rust and the like, so it is usually handled with a weight gripper. As the weight gripping tool, a wooden gripping tool or a metal gripping tool with a resin or rubber cover at the tip is used so that the weight is not damaged.
For example, Patent Document 1 describes a metal weight gripping tool whose tip is covered with rubber. In the weight gripping tool described in Patent Document 1, it is necessary to strongly press the weight gripping tool in order to grip a heavy weight. In addition, when pinching the neck portion of the weight, the weight is held at approximately two points with the gripping tool, which is extremely unstable when the weight is moved.
Further, Patent Document 2 has a locking member having a locking recess at the tip, and a connecting portion fitted to the locking member at one end, and the movable piece portion is connected to the connecting portion via a hinge portion. There is described a gripping tool having a movable member in which a pair is integrally formed and a notch is provided in the movable piece portion, and a stopper is provided between the movable piece portions on the locking member.

JP 2010-5753 A JP 2008-188704 A

  The present invention provides a weight gripping tool that does not need to strongly press a weight gripping tool even when a heavy weight is gripped, is stably gripped even when a weight is moved, and is easy to perform a weight gripping operation. It is in.

  As a result of studies conducted by the present inventor to achieve the above object, the present invention comprises a columnar support member and a pair of sandwiching members having a semi-cylindrical shape having a cavity inside and having elasticity. The support member is sandwiched between and the support member is fitted into the semi-cylindrical cavity of the sandwiching member so that the support member and the proximal end of the sandwiching member are coupled, and the coupling unit is used as a fulcrum. The two distal ends of the sandwiching member are opened by elastic deformation, and the inner peripheral surface of the semi-cylindrical cavity at the distal end of the sandwiching member protrudes inward and with respect to the axis of the cylinder Protrusions that extend in a direction perpendicular to each other are formed, and when the distance between the distal ends of the clamping members is narrowed, the projections fit into the neck of the weight, and the weight gripper that can clamp the weight is It was found that the gripping can be stably performed and the weight gripping operation is easy. The present invention has been completed based on this finding.

That is, the present invention employs the following solutions in order to achieve the above object.
The weight gripping tool of the present invention includes a support member and a clamping member.
The support member used in the present invention has a cylindrical shape. The inside of the support member may be hollow or solid. From the viewpoint of weight reduction, a hollow is preferable. The material of the support member is not particularly limited. For example, steel, steel plated with nickel, brass, stainless steel, nickel, vinyl chloride resin, polypropylene resin, polyacetal resin, fluorine resin, and the like can be given. Among these, a vinyl chloride resin, a polypropylene resin, a polyacetal resin, a fluororesin, and the like are preferable in terms of excellent chemical resistance.

  The clamping member used in the present invention has a semi-cylindrical shape with a hollow inside and a pair of elastic members. Further, protrusions are formed on the inner peripheral surface of the semi-cylindrical cavity at the distal end of the clamping member.

The support member is sandwiched between the pair of sandwiching members, and the support member is fitted into the semi-cylindrical cavity of the sandwiching member, the support member and the proximal end of the sandwiching member are coupled, and the coupling portion is The distal end of the clamping member is spread by elastic deformation as a fulcrum. The inner diameter of the connecting portion of the sandwiching member and the semicylindrical cavity is not particularly limited as long as the support member can be fitted into the semicylindrical cavity of the sandwiching member, and may be substantially equal to the outer diameter of the support member. It may be smaller than the outer diameter of the support member.
When the inner diameter of the connecting portion of the sandwiching member is substantially equal to the outer diameter of the support member, the sandwiching member and the support member can be coupled by a connecting tool such as adhesion, fusion, or a screw.
When the inner diameter of the connecting portion of the holding member is smaller than the outer diameter of the support member, for example, the holding member can be heated, expanded, fitted with the support member, and then connected by cooling. In terms of connection reliability, ease, and rigidity of the weight gripper when the semi-cylindrical cavity of the clamping member is closed, the inner diameter of the coupling part of the clamping member and the semi-cylindrical cavity is the outer diameter of the support member. Preferably it is smaller.

  The material of the clamping member is not particularly limited as long as it has elasticity. For example, steel, steel plated with nickel, brass, stainless steel, nickel, vinyl chloride resin, polypropylene resin, polyacetal resin, fluorine resin, and the like can be given. Among them, vinyl chloride resin, polypropylene resin, polyacetal resin, and fluororesin are preferable because they are excellent in elasticity, chemical resistance, etc., and polypropylene resin is more preferable because they can be easily fitted to the support member by the thermal expansion. preferable.

On the inner peripheral surface of the semi-cylindrical cavity at the distal end of the sandwiching member, protrusions that protrude inward and extend in a direction perpendicular to the axis of the cylinder are formed. The protrusion may be integrally formed on the inner peripheral surface of the semi-cylindrical cavity at the distal end of the clamping member, or a member for forming the protrusion may be separately prepared and installed on the inner peripheral surface. This protrusion can hold the weight neck at a surface or at multiple points, and even when holding a heavy weight, there is no need to hold down the weight gripping tool, and the weight is stably held when moving the weight. The weight gripping operation is easy.
The material of the protruding portion is not particularly limited. Examples thereof include resins such as vinyl chloride resin, polypropylene resin, polyacetal resin, and fluororesin, and rubber. Among these, a fluororesin is preferable in that it does not pollute the weight, does not transmit the body temperature to the weight, and does not have magnetism or static electricity.

  The weight gripping tool of the present invention does not need to strongly press the weight gripping tool when gripping a heavy weight, and is stably gripped when moving the weight, and the weight gripping operation is easy.

It is a component expanded view which shows the outline | summary of one Embodiment of the weight holding tool of this invention. It is a figure which shows the outline | summary of one Embodiment of the weight holding | gripping tool of this invention. It is a figure explaining operation which picks a weight with the weight holding tool of the present invention.

DESCRIPTION OF EMBODIMENTS Preferred embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a part development view showing an outline of an embodiment of a weight gripping tool of the present invention.
(A1) in FIG. 1 is a front view of the support member, and (a2) is a right side view of the support member. In the front view, the left is the proximal end and the right is the distal end. In FIG. 1, (b1) is a front view of the clamping member, and (b2) is a right side view of the clamping member. (C1) in FIG. 1 is a front view of the protruding member, and (c2) is a right side view of the protruding member.
FIG. 2 is a diagram showing an outline of an embodiment of the weight gripping tool of the present invention. (D1) in FIG. 2 is a front view of a state in which the weight gripping tool is opened, and (d2) is a right side view thereof.
(E1) in FIG. 2 is a front view showing a state in which the weight gripping tool is closed, and (e2) is a right side view thereof.

The support member 1 in this embodiment is comprised by the cylindrical body made from a polypropylene resin. The sandwiching member 2 in the present embodiment is formed by opening a cylindrical body made of polypropylene resin from the distal end toward the proximal end so as to have a semicylindrical shape, and forming a pair of semicylindrical portions having cavities inside. It will be. The proximal end portion of the cylindrical body made of polypropylene resin is not cut open, and the cylindrical body is left as it is to form the connecting portion 3. A lip stop 4 is formed at the final part of the incision so that the clamping member can be opened and closed smoothly and to stop the tearing of the connecting part. In the present embodiment, the ripstop 4 has a triangular shape, but is not limited thereto, and may have a trapezoidal shape, a circular shape, a pear shape, or the like. The sandwiching member 2 is configured such that the distance between both distal ends of the sandwiching member is expanded by elastic deformation with the connecting portion 3 as a fulcrum.
In the present embodiment, the outer diameter of the support member 1 is larger than the inner diameter of the clamping member 2. The support member 1 and the sandwiching member 2 are formed by heating and expanding the proximal end portion (connecting portion 3) of the sandwiching member 2 so that the inner diameter is larger than the outer diameter of the proximal end portion of the support member 1. The proximal end portion and the proximal end portion (connecting portion 3) of the holding member 2 are fitted together and then cooled and connected. When cooled, the proximal end of the clamping member shrinks and the inner diameter becomes smaller. As a result, the support member enters between the cutouts of the lip stop 4 and pushes the clamping member apart. If the axial length of the triangular lip stop 4 is shortened, in other words, if the inclination angle of both sides of the triangular shape of the lip stop 4 becomes steep, the opening degree of the clamping member increases. By changing the length of the direction, the opening degree and the strength of the opening can be adjusted as appropriate.

  The protruding member 6 in the present embodiment is a member made of a fluororesin having a semi-annular shape. When the distance between the distal ends of the holding member 2 is narrowed, a neck portion of the weight is fitted into the recess 5 of the member. The protruding member 6 is installed on the inner peripheral surface 4 at the distal end of the clamping member.

  The size of each member of the weight gripping tool of the embodiment is not particularly limited as long as it can be held and operated. For example, the support member in the present embodiment is a cylindrical body having a length of 80.0 mm, an outer diameter of 15.0 mm, and an inner diameter of 13.0 mm. It connects with the connection part 3 of the clamping member in the range from the proximal end of a support member to 10.0 mm. The clamping member is manufactured by cutting a cylindrical body having an outer diameter of 15.0 mm, an inner diameter of 13.0 mm, and a length of 97.0 mm. The length from the ripstop 4 to the distal end of the clamping member is 87.0 mm. The ripstop 4 has a triangular notch with rounded corners having a base of 10.0 mm and a height (axial length) of 14.0 mm. The protruding member is a semi-annular body having an outer diameter of 15.0 mm, an inner diameter of 13.0 mm, and a thickness of 3.0 mm. The inner cavity at the distal end of the holding member is expanded by the projecting member so that the support member can be easily fitted into the inner cavity of the holding member when the holding member is closed.

As shown in FIG. 2 (d1), the weight gripping tool opens between the distal ends of the clamping member 2 by elastic deformation with the connecting portion 3 as a fulcrum. And as shown in FIG.2 (e1), it can close by pinching the clamping member 2 with a finger | toe. In the state shown in FIG. 2 (e1), the outer peripheral surface of the support member and the inner peripheral surface of the holding member overlap with each other, and sufficient rigidity to hold the weight is obtained.
FIG. 3 is a view showing a state in which the projection fits into the neck portion 7 of the weight 8 when the distance between the distal ends of the holding member is narrowed, and the weight is being held. In this state, since the entire outer periphery of the neck portion of the weight is fixed by the protrusion, the weight can be stably gripped and the weight gripping operation is easy.

1 .. Supporting member 2 .. Holding member 3 .. Connection part 4 .. Ripstop 6 .. Protrusion member 8 .. Weight 7.

Claims (1)

A cylindrical support member;
It consists of a pair of clamping members that are semi-cylindrical with a hollow inside and have elasticity,
The support member is sandwiched between the pair of sandwiching members, and the support member is fitted into the semi-cylindrical cavity of the sandwiching member, so that the support member and the proximal end of the sandwiching member are coupled,
With the connecting portion as a fulcrum, the distance between both distal ends of the clamping member is expanded by elastic deformation,
The inner peripheral surface of the semi-cylindrical cavity at the distal end of the clamping member is formed with a protrusion that protrudes inward and extends in a direction perpendicular to the axis of the cylinder, and the distal end of the clamping member A weight gripping tool that allows the projection to fit into a neck portion of a weight when the space is narrowed and to hold the weight.

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