JP2002102048A - Ring shape metallic fixtures - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide ring shape metallic fixtures which are excellent in strength and used for a key holder, etc., to be easily produced. SOLUTION: The metallic fixtures are constituted by providing a nearly U shape main body part where a screw is formed at one end, a main body part opening/closing member which is formed by a wire and whose one end is supported via a hinge in the end part of the main body part at the opposite side of the screw so as to be freely rotatable and whose other end is freely contact/uncontact possible in the end part at the screw side of the main body part and a fixing member which is fitted with play to the other end of the opening/closing member so as to be freely rotatable and is provided with a screw hole to be fitted to the screw to fix the opening/closing member in a closing state by the screwing of the screw onto the screw hole when the end part of the main body part provided with the screw is in an adjacent state to the other end of a closing member. The fixing member is provided with a recessed groove being concentric with the screw hole on an outer peripheral surface, the wire constituting the opening/closing member is wound around the fixing member in a ring shape so as to permit at least a part of the wire to face into the recessed groove and, then, the fixing member is fitted with play to the opening/closing member so as to be freely rotatable and a rotation axis is made to be locking possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ring-shaped metal fitting that can be used, for example, as a key ring.

[0002]

2. Description of the Related Art Conventionally, a ring-shaped key ring 100 as shown in FIG. 6 has been used. The key holder 100 includes two semi-circular key locking members 101 and 102 formed of a wire and a fixing member 103 formed of a columnar or prismatic member.

The two key locking members 101, 10
The two key locking members 101, 2 are pivotally fixed at one end thereof via a hinge 104, and are rotated.
The open ends 102 are separated from each other. As shown in FIG. 7, a screw 105 is engraved on the peripheral surface at the open end of one key locking member 101, and a fixing member described later is formed at the open end of the other key locking member 102. 103
Is formed in a ring shape on its peripheral surface.

[0004] The fixing member 103 is the other key locking member 1.
02 is supported rotatably about an axis at the open end.

That is, as shown in FIG. 7, a fixing member 103 is provided on one end surface of a cylindrical member or a prismatic member.
A screw hole 107 into which the screw 5 is screwed is formed, and a wire rod insertion hole 108 having a diameter substantially the same as or slightly larger than the wire rod constituting the key locking members 101 and 102 is formed on the other end surface. The other key locking member 1 is inserted into the wire insertion hole 108.
02, the locking pin 11 is inserted through a piny fitting hole 109 radially drilled in the peripheral surface of the fixing member 103.
The other key locking member 102 is supported by the open end of the other key locking member 102 by being fitted into the locking groove 106 such that the leading end of the key 0 slides along the locking groove 106.

The key holder 100 is configured as described above. The screw fixing of the fixing member 103 to the screw 105 is released and, as shown in FIG. After the locking ring provided at the end is inserted through the key locking member 102 from the screw 105 side end and supported by the key locking member 102, the fixing member 1
03 is screwed into the screw 105 again, and the key locking members 101,
102 is fixed in a closed state. The key 300 is supported by the key mounting bracket 200, so that the key 3
00 can be held, or the key
2 can hold the key 300.

However, the fixing member 10 as described above
The third mounting structure has the following problems. Since a plurality of locking pins 110 must be fitted into the pin fitting holes 109, the manufacturing process is complicated and the manufacturing cost is high. Since the load applied in the detaching direction of the fixing member 103 is supported only by the tip of the locking pin 110 made of a thin wire, there is a problem in strength, and the locking is performed only by the fitting of the locking pin 110. Since it is fixed to the member 103, the locking pin 110 is likely to come off during use.

Since the angle between the central axis of the screw 105 and the central axis of the screw hole 107 changes with the tightening,
The change in the angle between the central axes changes the tightening hardness of the fixing member 103 when tightening. In some cases, only half of the screw 105 can be tightened. On the other hand, in order to solve the above problem, while increasing the diameter of the wire rod insertion hole 108 and increasing the width of the locking groove 106,
If the degree of freedom for changing the angle of the fixing member 103 is increased, there arises a problem that the strength of the fixing member 103 mounting portion becomes weaker.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to provide a ring-shaped metal fitting which is excellent in strength and can be easily used for a key holder or the like in view of such circumstances.

[0010]

In order to achieve such an object, a ring-shaped metal fitting according to the present invention has a substantially U-shape or a substantially circular arc shape, and a screw is engraved on a peripheral surface at one end. And a body formed of a linear or rod-shaped material, one end of which is rotatably supported via a hinge at an end opposite to the threaded portion of the body, and the other end of which is formed by screwing the body. An opening / closing member of a main body formed of a linear material or a rod-like material which can be freely attached and detached at an end on the side of the main body; A fixing member for fixing the opening / closing member to a closed state by screwing the screw into the screw hole when the end on the part side and the other end of the closing member are close to each other; Wherein the fixing member is
The outer peripheral surface is provided with a concave groove concentric with the screw hole, and a linear material or a rod-like material constituting the opening / closing member is wound around the fixing member in a ring shape so that at least a part thereof faces the concave groove. With this configuration, the opening and closing member is rotatably and freely rotatably fitted with the rotating shaft.

The use of the ring-shaped member according to the present invention is not particularly limited. For example, the ring-shaped member can be used as a work-holding fitting such as a key ring or a shackle. The material of the ring-shaped member is not particularly limited, for example, stainless steel, chrome-plated steel,
Engineering plastics and the like.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.
This will be described in detail with reference to the drawings. 1 to 5 show a key ring as one embodiment of a ring-shaped metal fitting according to the present invention.

As shown in FIGS. 1 and 2, the key holder 1 includes a main body 2, an opening / closing member 3, and a fixing member 4.
, A makeup tube 5, a plurality of key fittings 6, and a shaft stopper 7. The main body 2 is formed by forming a wire into a substantially U-shape, and a screw 21 is engraved on a peripheral surface of one end, and as shown in FIG. 3, the wire is flattened at the other end in parallel with the U-shaped bending direction. And a shaft hole 23 formed with a shaft hole 23 through which a shaft fixing pin 72 of the shaft fixing member 7 described below is inserted.

As shown in FIG. 3, the opening / closing member 3 is formed by flatly crushing one end of a wire at one end thereof, and has a shaft hole 32 through which a shaft fixing pin 72 of a shaft fixing member 7 described later is inserted. As shown in FIG. 4, a fixing member, which has a perforated shaft stopper 31 and is formed by bending the other end of the wire into a ring shape in a plane perpendicular to the axis of the shaft hole 1 as shown in FIG. Four locking ring portions (loops) 33 are provided. Fixing member 4
The locking ring 33 of the opening / closing member 3 as shown in FIG.
A screw hole 41 into which the screw 21 of the main body 2 is screwed is formed from one end face of the columnar member having an outer diameter larger than the inner diameter of the cylindrical member. A ring-shaped concave groove 42 is provided concentrically with the screw hole 41. That is, the locking ring portion 33 is formed by bending the end of the wire constituting the opening / closing member 3 into a ring shape so as to be wound around the concave groove 42, and the fixing member 4.
Is rotatably supported and its rotating shaft is swingably supported.

The decorative tube 5 is formed by a rubber elastic body such as a flexible resin or resin elastomer to have an inner diameter slightly larger than the outer diameter of a wire constituting the opening / closing member 3. The opening / closing member 3 is attached to the opening / closing member 3 so as to surround a portion of the opening / closing member 3 excluding the locking ring portion 33 and the axis stopping portion 31 from the shaft stopping portion 31 side.

The shaft stop member 7 includes a bolt-shaped first member 71 having a shaft stop pin 72 in FIG. 3, a second member 73 having a fitting hole 74 into which the shaft stop pin 72 fits, and a spring washer 75. And That is, the shaft stopper 7 is
When the spring washer 75 is mounted on the pin 72 of the member 71, the pin 72 is moved to the opening / closing member 3 of the shaft body 2.
And the fitting hole 74 of the second member 73 is fitted into the tip of the locking pin 72 protruding from the tip of the shaft hole 32. The portion protruding from the fitting hole 74 of the second member 73 is crushed to increase its diameter and is prevented from coming off. The opening / closing member 3 can be separated from the main body 2 on the side of the screw 21 of the main body 2 by the shaft stopper 7 attached in this manner. It is supported so that it can rotate freely.

The distal end of the shaft locking pin 72 has its portion protruding outside through the fitting hole 74 of the second member 73 crushed and is prevented from rotating. The key attachment 6 has a main body 2 at one end.
And has a locking ring 61 larger than the outside diameter of the wire rod, and has a hook-shaped key locking portion, which is spring-biased at the open end of the key locking portion and locked to the key locking portion. Key mounting portion 6 having a stopper for preventing key 8 from coming off
2, the main body 2 can be locked to the main body 2 by inserting a locking ring 61 from the screw 21 side.

The key 8 is held by the key holder 1 by attaching a hole provided in the holding portion to the key attaching portion 62.

As described above, the key holder 1 is configured such that the fixing member 4 is connected to one end of the wire constituting the opening / closing member 3 by the concave groove 4.
Since it is configured to be rotatably supported by the opening and closing member 3 with a simple configuration in which it is wound around the portion 2 to form the locking ring portion 33, a pin fitting hole is provided as in the related art.
There is no need to press-fit the locking pin or the like, and the manufacturing operation process is simplified. Further, since the fixing member 4 has a structure in which the concave groove 42 portion is loosely fitted to the locking ring portion 33 and has a structure capable of rotating and swinging, the degree of freedom of changing the angle of the fixing member 4 can be increased. Therefore, the fixing member 4
However, as the screw hole 41 is screwed into the screw 21, the angle always changes so that the center axis of the screw hole 41 and the center axis of the screw 21 coincide, and the tightening hardness of the screw is always constant. be able to. In other words, the screw 21 can be smoothly and easily screwed into the screw hole 41, and a firm fixed state can always be obtained.

Further, the load applied in the direction in which the fixing member 4 comes off can be received over the entire circumference by the locking ring 33 formed by bending the thick wire constituting the opening / closing member 3. Also excellent in strength. In addition, since the makeup tube 5 is attached to the opening / closing member 3, the decorative tube is excellent in decorativeness and the makeup tube 6 is provided.
Is formed of a material having flexibility or elasticity, so that it is not slippery when it is carried and has a good touch.

The present invention is not limited to the above embodiment. For example, in the above-described embodiment, the ring opening / closing structure of the present invention is used for a key ring. However, the ring opening / closing structure can be used for a construction jig such as a shackle. Further, in the above-described embodiment, the key 8 is held by the key holder 1 via the key attachment 6, but the key 8 may be held directly by the main body 2.

Further, in the above embodiment, the makeup tube 5 is attached to the opening / closing member 3, but if the opening / closing member 3 and the main body 2 are painted, the makeup tube 5 may be omitted. In the above embodiment, the locking ring 3
Although the wire 3 is formed so as to wind the wire in a state facing the inside of the concave groove 42 of the fixing member 4, it may be fixed by welding or the like so that the end does not expand after winding. .

[0023]

Since the ring-shaped metal fitting according to the present invention is constructed as described above, the structure is simplified, the manufacturing process can be simplified, the productivity can be improved, and the manufacturing cost can be reduced. In addition, the strength can be improved.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a key ring as one embodiment of a ring-shaped member according to the present invention.

FIG. 2 is a perspective view of the key holder of FIG. 1 in an open state of an opening / closing member.

FIG. 3 is an exploded perspective view of a hinge portion of the key holder of FIG.

FIG. 4 is a plan view of a fixing member of the key holder of FIG. 1;

FIG. 5 is a sectional view taken along line XX of FIG. 4;

FIG. 6 is a front view of a conventional key ring.

FIG. 7 is a cross-sectional view illustrating a mounting structure of a fixing member of the key holder of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Key holder (ring-shaped metal fitting) 2 Body part 21 Screw 3 Opening / closing member 33 Locking ring part 4 Fixing member 41 Screw hole 42 Concave groove

Claims (1)

[Claims] 1. A main body formed of a linear or rod-shaped material having a substantially U-shaped or substantially circular arc shape and having a thread engraved on a peripheral surface at one end, and a screw formed at one end of the main body. The other end of the main body is rotatably supported via a hinge at the end opposite to the forming part, and the other end is formed of a linear or rod-like material detachable from and separated from the end of the main body on the thread forming part side. The opening / closing member is rotatably loosely fitted to the other end of the opening / closing member, and the screw is screwed when the end of the main body portion on the thread forming portion side and the other end of the closing member are close to each other. A fixing member having a possible screw hole and fixing the opening and closing member in a closed state by screwing the screw into the screw hole, wherein the fixing member has a concave concentric with the screw hole on the outer peripheral surface. A linear material or a rod-shaped material constituting the opening / closing member is provided at least in part; Ring fitting, characterized in that rotatable and the rotary shaft is loosely fitted swingably to the opening and closing member by being wound around the fixing member in a ring shape so as to face the recessed groove.