JP3833059B2 - Ring-shaped bracket - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ring-shaped metal fitting that can be used as, for example, a key holder.
[0002]
[Prior art]
Conventionally, a ring-shaped key holder 100 as shown in FIG. 6 has been used.
The key holder 100 includes two semi-arc-shaped key locking members 101 and 102 formed of a wire, and a fixing member 103 made of a columnar or prismatic member.
[0003]
The two key locking members 101 and 102 are pivotally fixed to each other via hinges 104, and the open ends of the key locking members 101 and 102 are separated by rotation. It comes to touch.
Further, 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 to be described later is provided at the open end of the other key locking member 102. 103 locking grooves 106 are formed in a ring shape on the peripheral surface thereof.
[0004]
The fixing member 103 is supported by the open end of the other key locking member 102 so as to be rotatable about an axis.
[0005]
That is, as shown in FIG. 7, the fixing member 103 has a screw hole 107 into which a screw 105 is screwed into one end surface of a columnar member or a prismatic member, and key locking members 101 and 102 on the other end surface. A wire insertion hole 108 having a slightly larger diameter than the wire constituting the wire is formed. Then, after inserting the distal end portion of the other key locking member 102 into the wire insertion hole 108, the distal end of the locking pin 110 is locked from the pin insertion holes 109 formed radially in the peripheral surface of the fixing member 103. It is supported by the open end of the other key locking member 102 by being fitted so as to enter the locking groove 106 slidably along the groove 106.
[0006]
The key holder 100 is configured as described above. As shown in FIG. 6, a plurality of key attachments 200 to which the key 300 can be freely attached and detached are released. The locking ring provided on the screw 105 is inserted into the key locking member 102 from the end on the screw 105 side and supported by the key locking member 102, and then the fixing member 103 is screwed again to the screw 105, and the key locking is performed. The members 101 and 102 are fixed in a closed state. Then, the key 300 can be held by supporting the key 300 on the key mounting bracket 200, or the key 300 can be directly held by the key locking member 102.
[0007]
However, the mounting structure of the fixing member 103 as described above has the following problems.
(1) Since a plurality of locking pins 110 must be inserted into the pin insertion holes 109, the manufacturing process is complicated and the manufacturing cost is high.
(2) Since the load applied in the removal 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 pin 110 is inserted. Since it is fixed to the fixing member 103 alone, the locking pin 110 is likely to come off when used.
[0008]
(3) Since the angle formed between the central axis of the screw 105 and the central axis of the screw hole 107 changes with tightening, the tightening hardness when the fixing member 103 is tightened due to the change in angle between the central axes. Changes. In some cases, only half of the screw 105 can be tightened.
On the other hand, in order to solve the problem (3), when the diameter of the wire insertion hole 108 is increased and the width of the locking groove 106 is increased so that the degree of freedom in 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]
[Problems to be solved by the invention]
In view of such circumstances, an object of the present invention is to provide a ring-shaped metal fitting that can be used for a key holder or the like that is excellent in strength and easy to manufacture.
[0010]
[Means for Solving the Problems]
In order to achieve such an object, the ring-shaped metal fitting according to the present invention is substantially U-shaped or substantially arc-shaped, and is made of a linear material or rod-shaped material in which a screw is engraved on the peripheral surface of one end. The formed main body and one end are rotatably supported via a hinge at the end opposite to the screw forming portion of the main body, and the other end is freely attached to and detached from the end of the main body on the screw forming portion side. An opening / closing member of the main body formed of a linear material or a rod-like material, and freely loosely fitted to the other end of the opening / closing member, and an end of the main body on the screw forming portion side and the closing member When the other end is in a proximity state, the ring-shaped metal fitting having a screw hole into which the screw can be screwed, and a fixing member that fixes the opening / closing member in a closed state by screwing into the screw hole of the screw, The fixing member has a concave groove concentric with the screw hole on the outer peripheral surface, and the opening / closing member is Rotatable locking ring portion of the closing member formed by a linear material or bar material formed is wound at least partially around the fixed member in a ring shape so as to face the recessed groove And it was set as the structure by which the rotating shaft was supported loosely so that rocking | fluctuation was possible.
[0011]
Although it does not specifically limit as a use of the ring-shaped member concerning this invention, For example, it can use as a locking metal fitting for constructions, such as a key holder and a shackle.
Although it does not specifically limit as a material of a ring-shaped member, For example, stainless steel, chromium plating steel, engineering plastics, etc. are mentioned.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the drawings.
1 to 5 show a key holder which is an embodiment of a ring-shaped metal fitting according to the present invention.
[0013]
As shown in FIGS. 1 and 2, the key holder 1 includes a main body portion 2, an opening / closing member 3, a fixing member 4, a decorative tube 5, a plurality of key mounting brackets 6, and a shaft locking member 7. ing.
The main body 2 is formed into a substantially U-shaped wire, and a screw 21 is engraved on the peripheral surface of one end, and the wire is flattened at the other end in parallel to the U-shaped bending direction as shown in FIG. The shaft stop portion 22 is provided with a shaft hole 23 that is formed by crushing the shaft and into which a shaft stop pin 72 of the shaft stop member 7 described later is inserted.
[0014]
As shown in FIG. 3, the opening / closing member 3 is formed by flattening one end portion of a wire rod at one end portion thereof, and a shaft hole 32 through which a shaft stop pin 72 of a shaft stop member 7 described later is inserted. As shown in FIG. 4, the other end of the wire rod is bent in a ring shape in a plane orthogonal to the axis of the shaft hole 1 as shown in FIG. A stop ring portion (loop) 33 is provided.
As shown in FIG. 5, the fixing member 4 has a screw hole 41 into which the screw 21 of the main body 2 is screwed from one end surface of a cylindrical member having an outer diameter larger than the inner diameter of the locking ring portion 33 of the opening / closing member 3. A ring-shaped concave groove 42 is formed concentrically with the screw hole 41 and is formed in the outer peripheral surface thereof so that the opening and closing member 3 is loosely fitted to the locking ring portion 33. That is, the locking ring portion 33 is formed by curving the end portion of the wire constituting the opening / closing member 3 into a ring shape so as to be wound around the concave groove 42 portion, and the fixing member 4 is rotatable and its rotating shaft Is supported to be swingable.
[0015]
The decorative tube 5 is formed by a rubber elastic body such as a flexible resin or a resin elastomer so as to have an inner diameter slightly larger than the outer diameter of the wire constituting the opening / closing member 3, and the shaft stopper portion of the opening / closing member 3 before assembly. 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 shaft locking portion 31.
[0016]
The shaft locking member 7 includes a bolt-shaped first member 71 having a shaft locking pin 72 in FIG. 3, a second member 73 having a fitting hole 74 into which the shaft locking pin 72 is fitted, and a spring washer 75. ing.
In other words, the shaft locking member 7 is configured such that the shaft locking pin 72 is connected to the shaft locking pin 72 of the first member 71 with the spring washer 75 attached thereto. Are inserted in order, and the fitting hole 74 of the second member 73 is fitted to the tip of the shaft stop pin 72 protruding from the tip of the shaft hole 32, and then the fitting hole of the second member 73 of the shaft stop pin 72. The part which protruded from 74 is crushed and is prevented from coming off by expanding the diameter. Then, by the shaft fixing member 7 attached in this manner, the opening / closing member 3 can be separated from and attached to the end of the main body 2 on the fixing member 4 side and the end of the main body 2 on the screw 21 side. It is supported so that it can rotate freely.
[0017]
Further, the tip end portion of the shaft locking pin 72 is prevented from being rotated by a portion protruding outside from the fitting hole 74 of the second member 73 being crushed.
The key mounting bracket 6 has a locking ring 61 larger than the outer diameter of the wire constituting the main body 2 at one end, a key locking portion in the shape of a fishhook, and a spring bias at the open end of the key locking portion. And a key attachment portion 62 provided with a stopper for preventing the key 8 locked to the key locking portion from coming off. The main body portion 2 is inserted through the locking ring 61 from the screw 21 side. By doing so, the main body 2 can be locked.
[0018]
The key 8 is held by the key holder 1 by attaching a hole provided in the grip portion to the key attachment portion 62.
[0019]
As described above, the key holder 1 is opened and closed with a simple configuration in which the fixing member 4 simply forms one end of the wire constituting the opening and closing member 3 around the concave groove 42 to form the locking ring portion 33. Since the member 3 is rotatably supported, it is not necessary to provide a pin insertion hole or press-fit a locking pin as in the prior art, and the manufacturing work process is simplified.
In addition, since the fixing member 4 is loosely fitted in the engaging ring portion 33 at the concave groove portion 42 and is configured to be rotatable and swingable, the degree of freedom in changing the angle of the fixing member 4 can be increased. Therefore, as the fixing member 4 is screwed into the screw 21 of the screw hole 41, the angle always changes so that the central axis of the screw hole 41 and the central axis of the screw 21 coincide with each other. Can always be constant. That is, the screw 21 can be smoothly screwed into the screw hole 41 smoothly and easily, and a firmly fixed state can always be obtained.
[0020]
Moreover, since the load applied in the pulling direction of the fixing member 4 is received over the entire circumference by the locking ring portion 33 formed by curving the thick wire constituting the opening / closing member 3, the strength is increased. Is also excellent.
In addition, since the decorative tube 5 is attached to the opening / closing member 3, the decorative tube 5 is excellent in decorativeness, and the decorative tube 6 is formed of a material having flexibility or elasticity. Good touch.
[0021]
The present invention is not limited to the above embodiment. For example, in the above embodiment, the ring opening / closing structure of the present invention is used for a key holder, but it can also be used for a construction jig such as a shackle.
Further, in the above embodiment, the key 8 is held by the key holder 1 via the key fitting 6, but the key 8 may be directly held by the main body 2.
[0022]
Furthermore, in the above embodiment, the decorative tube 5 is attached to the opening / closing member 3, but the decorative tube 5 may be omitted if the opening / closing member 3 and the main body 2 are coated.
Further, in the above embodiment, the locking ring portion 33 is formed so as to wind the wire in a state facing the inside of the recessed groove 42 of the fixing member 4, but the end portion does not expand after being wound. In addition, it may be fixed by welding or the like.
[0023]
【The invention's effect】
Since the ring-shaped metal fitting according to the present invention is configured as described above, the structure is simplified, the manufacturing process can be simplified, the productivity is improved, and the manufacturing cost can be reduced. Moreover, the strength can be improved.
[Brief description of the drawings]
FIG. 1 is a partially cutaway perspective view of a key holder that is an embodiment of a ring-shaped member according to the present invention.
FIG. 2 is a perspective view of an open / close member of the key holder of FIG.
3 is an exploded perspective view of a hinge part of the key holder of FIG. 1. FIG.
4 is a plan view of a fixing member portion of the key holder of FIG. 1. FIG.
5 is a cross-sectional view taken along line XX in FIG.
FIG. 6 is a front view of a conventional key holder.
7 is a cross-sectional view showing a mounting structure of a fixing member of the key holder of FIG.
[Explanation of symbols]
1 Key holder (ring-shaped bracket)
2 Body portion 21 Screw 3 Opening / closing member 33 Locking ring portion 4 Fixing member 41 Screw hole 42 Concave groove

Claims (1)

A main body portion that is substantially U-shaped or substantially arc-shaped and is formed of a linear or rod-like material with a screw engraved on the peripheral surface of one end portion, and one end opposite to the screw forming portion of the main body portion An opening / closing member of the main body formed of a linear material or a rod-shaped material that is supported rotatably at the end via a hinge and whose other end is detachable from the end of the main body on the screw forming side; When the other end of the opening and closing member is freely loosely fitted and the end of the main body portion on the screw forming portion side and the other end of the closing member are close to each other, a screw hole into which the screw can be screwed is provided. And a fixing member for fixing the opening / closing member in the closed state by screwing the screw into the screw hole, wherein the fixing member has a concave groove concentric with the screw hole on the outer peripheral surface, At least a part of the linear material or rod-shaped material constituting the member is in the concave groove. Characterized in that the rotatable and the rotating shaft to the locking ring portion of the closing member formed by being wound around the fixing member in a ring shape so as to face is pivotably loosely supported Ring-shaped bracket.

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