JP2008063743A - Key holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a key holder which enables a key to be surely sealed by a weak force. <P>SOLUTION: This key holder comprises a partially-opened approximately-annular wire body 2, and a connecting fitting 3 for closing a section between two opened ends 12 and 20 of the wire body. One of the opened end of the wire body and one end of the connecting fitting can be oscillated within a predetermined angle range, and disconnectably connected together. After the key is held by the wire body, the other opened end is protruded into a connecting hole 10 which is provided at the other end of the connecting fitting, so that the opened ends can be disconnectably connected together. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a key holder. Specifically, the present invention relates to a key holder that can manage a key with high security because the key cannot be removed unless it is destroyed.

  In offices and the like, many keys are often managed collectively. In order to prevent unauthorized copying, these keys are often managed by being held in a key holder or the like that cannot be removed unless destroyed.

Utility Model Registration No. 3001100 JP 2004-360432 A

  In the key ring described in Patent Document 1, male screw portions are formed at both end portions of the metal rod, and both end portions of the metal rod are closed by nuts screwed into the male screw portions. ing. Then, by caulking and sealing the nut connecting portion, the key held in the key ring is configured so that it cannot be removed without breaking the key ring. In addition, the both end portions can be positioned on the same axis by applying a slight force so that the ends of the metal rods can be easily connected.

  The deadlock key holder described in the above-mentioned Patent Document 2 is a coupling formed by forming a C-type retaining ring on the fastening pipe while caulking and joining one end of the metal ring and the fastening pipe to the outer periphery of the other end of the metal ring. The key is sealed and held by being fitted in the hole.

  In the key ring described in Patent Document 1, it is necessary to caulk and seal the nut member with a dedicated tool or the like after the nut member is screwed into the male screw portion. For this reason, the sealing work is extremely troublesome.

  In order to improve security, it is preferable to use a hard metal rod such as brass. However, when a hard material is used, the force at the time of sealing increases and workability is reduced. The key ring described in Patent Document 1 is configured so that the end of the metal rod can be positioned on the same axis by applying a slight force in order to improve the workability. However, in the above configuration, there is a problem that a gap for attaching the key to the metal rod is also small, so that it is difficult to attach the key.

  In the deadlock key holder described in Patent Document 2, in order to seal the key, the end of the metal ring with the C-type retaining ring is simply inserted into the fastening pipe, and the sealing is completed.

  However, since one end of the metal ring and the fastening pipe are caulked and joined, it is troublesome to align the axial centers of the metal ring and the fastening pipe. In addition, when a hard material is used for the metal ring, a large force is required to deform the metal ring and align the tip core. In order to reduce the force for aligning the shaft core, it is necessary to set the fastening pipe and the end of the metal ring close to each other as in the invention described in Patent Document 1. The gap to be inserted becomes small, and the same problem as in Patent Document 1 occurs.

  In addition, in the key holder described in Patent Document 2, when the end of the metal ring is inserted into the fastening pipe, the C-type retaining ring needs to be elastically deformed so that the outer diameter becomes small and pass through the guide hole. There is. However, it is necessary to pass through the guide hole while elastically deforming the C-type retaining ring by bringing the entire outer periphery of the C-shaped retaining ring into contact with the inner peripheral surface of the guide hole. For this reason, very big force is required for fastening. Further, if the axial center of the end of the annulus and the fastening pipe is misaligned, it is obvious that a force for deforming the annulus is required, the frictional force is increased, and a very large force is required for sealing. It is.

  The present invention solves the above problems and provides a key holder that can securely seal a key with a small force.

  The invention described in claim 1 of the present application is a key holder including a substantially annular wire body that is partially opened, and a connecting fitting that closes between both open ends of the wire body. The open end and one end of the connection fitting are swingably connected within a predetermined angle range and cannot be detached, and after holding the key on the wire body, the other open end is connected to the open end. It is configured to connect the open end portions so as not to be detached by entering into a connecting hole provided in the other end portion of the connecting fitting.

  In the key holder according to the present invention, one open end portion of the wire body and one end portion of the connection fitting are connected so as to be swingable within a predetermined angle range and not to be detached. That is, when the other open end of the wire body is connected to the other end of the connection fitting, the angle of the connection fitting can be displaced. Therefore, even if the shaft center of the coupling metal and the shaft core end portion are slightly deviated, the misalignment of these shaft cores is absorbed by the angular displacement. For this reason, the said wire body and the said connection metal fitting can be connected and sealed smoothly.

  Further, even in the process of connecting the other end of the wire body to the connection metal fitting, the angle between the connection metal fitting and the wire metal body is displaced. For this reason, useless force does not act on the wire body, and the frictional force generated between the tip end portion of the wire body and the connecting metal fitting becomes very small, and the connecting operation can be performed smoothly. It becomes possible.

  The swing angle of the connection fitting and the wire body is not particularly limited. However, as in the invention described in claim 2, the connection fitting includes the other open end of the wire body as the connection fitting. It is preferable that the shaft is held so as to be able to swing within an angular range that can absorb misalignment of the shaft core when coupled.

  When the open end of the wire is connected to the connecting fitting, the relative angle between the shaft cores is not constant, and the connection is made while the relative angle changes. Therefore, it is preferable to hold the connection fitting in a swingable manner within an angle range between a state in which the tip of the wire body and the other end of the connection fitting start connection and a state in which the connection is completed. As a result, it is possible to prevent the wire body from being excessively deformed and to prevent generation of frictional force accompanying the deformation of the wire body.

  According to a third aspect of the present invention, an annular groove is formed in an outer peripheral portion of at least one open end portion of the wire body, while being held at one end portion of the connecting metal fitting and fitted into the annular groove. A retaining ring having an inner peripheral portion, and between the annular groove of the one open end and an inner peripheral portion of the retaining ring fitted in the annular groove, Is provided with a play to hold the swayable.

  By adjusting the size of the play, that is, the size of the playable gap, the swing range of the wire body and the connecting metal fitting can be easily adjusted. In addition, since the inner peripheral portion of the retaining ring held by the connection fitting is used, a large swing angle can be set for the connection fitting with a very small size.

  Moreover, by configuring the inner peripheral portion of the retaining ring to be deformed, the amount of deformation when connecting the other end of the wire body is reduced, and the force required for connection can be reduced. It becomes.

  Furthermore, by providing a plurality of protrusions on the inner peripheral portion of the retaining ring and configured to elastically deform these protrusions, the portion that is elastically deformed at the time of connection is reduced, and the force required for the connection is reduced. It is possible to set a smaller value.

  Although the connection method of the other end part of the said connection metal fitting and a wire body is not specifically limited, Like the invention described in Claim 4, an annular groove is formed in the outer peripheral part of both said open end parts. In addition, the retaining ring can be provided at both ends of the coupling fitting.

  By comprising in this way, it becomes possible to connect the both ends of a connection metal fitting, and both the open ends of the said wire body using the same method, and an assembly operation etc. can be performed easily.

  The method of holding the retaining ring on the connecting metal fitting is not particularly limited. For example, an inner peripheral step portion for accommodating the retaining ring is provided at an end portion of a cylindrical body provided with an insertion hole into which the open end portion of the wire body can be inserted, and the retaining ring is welded to the inner peripheral step portion. The retaining ring can be held by caulking the outer periphery of the inner peripheral stepped portion.

  Further, as in the invention described in claim 5, the connecting metal fitting includes an inner member having a pair of insertion holes into which an open end portion of the wire body can be inserted, and a cylindrical outer member fitted to the inner member. And a retaining ring held between both end portions of the inner member and both end edge portions of the outer member. The retaining ring can be easily fixed by caulking and deforming so that both ends of the outer member are reduced in diameter.

  Further, as in the invention described in claim 6, by integrally forming an annular edge portion capable of locking the outer peripheral portion of the retaining ring at one end portion of the outer member, the one end portion of the inner member and the above-mentioned One retaining ring is sandwiched between the annular edge and the other end of the inner member, and the annular edge formed by deforming the other end edge of the outer member radially inward. The other retaining ring can be held between the two.

  When the above configuration is adopted, a pair of retaining rings and the inner member can be accommodated inside the outer member, and the connecting bracket can be assembled simply by caulking the other edge, which improves the assembling workability. At the same time, the pair of retaining rings can be securely held.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the key holder 1 includes a substantially annular wire body 2 provided with an opening S, and a connection fitting 3 that can connect the open end of the wire body 2.

  The wire body 2 includes a pair of linear facing portions 5 and 6, an arcuate portion 4 that connects the facing portions, and L-shaped bent portions 5 a and 6 a that extend in an L shape from the facing portions. It is formed in a substantially annular shape provided with an opening S for inserting and holding a key (not shown). As shown in FIG. 2, the open ends 12 and 20 of the wire body 2 are formed in a sharp shape so that the connection with the connection fitting 3 can be easily performed. In addition, annular grooves 11 and 19 to be fitted to the connection fitting 3 are formed in the vicinity of the open end.

  As shown in FIGS. 1 and 2, the key holder 1 is supplied to the user with one end of the connecting fitting 3 connected to one open end 12, and a key (not shown) is supplied to the wire body. After being attached to 2, the other open end 20 is inserted into the connecting fitting 3 so as to be connected and sealed.

  As shown in FIG. 2 and FIG. 3, the connecting metal fitting 3 includes a substantially cylindrical inner member 7, a cylindrical outer member 8 fitted to the inner member 7, and both end portions of the inner member 7. Are provided with retaining rings 13 and 14 held on the surface.

  As shown in FIG. 3, the inner member 7 includes connection holes 9 and 10 into which the open ends 12 and 20 can be inserted, and has a substantially cylindrical shape having an outer diameter that can be inserted into the cylindrical space 8 a of the outer member 8. Is formed.

  The outer member 8 has a bottom with an opening at one end and an insertion hole 15 for inserting the other end 20 of the wire body 6 at the other end and an edge 15a for holding the retaining ring. It is formed in a cylindrical shape.

  As shown in FIGS. 3 and 4, the retaining rings 13 and 14 have an outer diameter that can be inserted into the cylindrical space 8a of the outer member 8, and the open ends 12 and 20 can be inserted inside. A fitting hole 17 is formed.

  In the present embodiment, the retaining ring 13, the inner member 7 and the retaining ring 14 are sequentially inserted into the cylindrical space 8a of the outer member 8 so that the opening edge 16a of the outer member 8 is radially inward. By tightening, the members 13, 7, 14 are integrally held in the cylindrical space 8 of the outer member 8.

  As shown in FIG. 4, a plurality of arc-shaped protrusions 18 extending inward in the radial direction are formed in the fitting holes 17 of the retaining rings 13 and 14. The arcuate protrusions 12 and 20 are inserted into the fitting holes 17 so that the arcuate protrusions 18 are elastically deformed, whereby the arcuate protrusions are inserted into the annular grooves 11 and 19 formed in the open ends 12 and 20. 18 is engaged.

  Since the arc-shaped protrusion 18 is formed so as to be inclined in the direction in which the open end 12.20 is inserted, when the arc-shaped protrusion 18 and the annular grooves 11 and 19 are engaged with each other, the reverse direction is obtained. It is configured so that it cannot be pulled out.

  As shown in FIG. 2, the connecting metal fitting is provided between the annular groove 11 provided in the one open end 12 and the fitting hole 17 of the retaining ring 14 or the inner peripheral portion of the arc-shaped protrusion 18. A play (gap) that allows relative swinging between 3 and the wire body 2 is set.

  In the present embodiment, as shown in FIG. 2, when the other open end 20 of the wire body 2 is inserted, the shaft core of the coupling metal 3 and the shaft core of the open end 20 are The swing angle is set so as to swing in the matching direction.

  When the open end 20 is connected to the connecting fitting 3, the shaft core of the connecting fitting 3 and the axis of the open end 20 are matched so that unnecessary deformation or force is applied to the wire body during connection. Will not occur. For this reason, a large force is not required for the connecting operation, and the sealing operation can be easily performed.

  Moreover, as shown in FIG. 1, it becomes possible to set large the opening S provided between the said open end part 20 and the said connection metal fitting 3. FIG. For this reason, it becomes possible to mount the key without causing unnecessary deformation or the like in the wire body, and the operation of mounting the key can be easily performed.

  As shown in FIG. 6, both the open ends 12 and 20 are engaged with the retaining rings 13 and 14 in the connection fitting 3 so as not to be detached. The key held in the body 2 cannot be extracted. For this reason, it is possible to prevent an illegal act such as extracting a part of the key and copying it, thereby improving the security.

  The present invention is not limited to the above-described embodiment.

  In the embodiment, the connection metal fitting is provided with the retaining ring at both ends of the connecting metal and the open end of the wire body is connected. However, the connection metal is provided with the retaining ring on one side and the other connection on the other. Techniques can also be adopted.

  Further, the form of the wire body is not limited to the embodiment, and other forms such as a circle can be adopted.

It is a side view which shows the open state of the key holder which concerns on this invention. It is sectional drawing which shows the internal structure of the coupling metal fitting of the key holder shown in FIG. FIG. 3 is an exploded cross-sectional view of the connection fitting shown in FIG. 2. It is a front view of a retaining ring. It is a side view which shows the key holder of a connection sealing state. It is sectional drawing which shows the state inside the connection metal fitting of a connection sealing state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Key holder 2 Wire body 3 Connection metal fitting 10 Connection hole 12 Open end 20 Open end

Claims (6)

A key holder comprising a substantially annular wire body that is partially opened and a coupling fitting that closes between both open ends of the wire body,
One open end portion of the wire body and one end portion of the connection fitting are connected so as to be swingable within a predetermined angular range and not removable.
After the key is held on the wire body, the other open end portion is inserted into the connection hole provided in the other end portion of the connection fitting, thereby connecting the open end portions so as not to be detached. , Key holder.   2. The key holder according to claim 1, wherein the connection fitting is held so as to be swingable within an angle range in which a shift of an axial center when the other open end of the wire body is connected to the connection fitting can be absorbed. While forming an annular groove in the outer peripheral portion of at least one open end of the wire body,
A retaining ring having an inner peripheral portion that is held at one end of the coupling fitting and is fitted into the annular groove,
A play is provided between the annular groove at the one open end and an inner peripheral portion of the retaining ring fitted in the annular groove so as to hold the wire body and the coupling fitting in a swingable manner. The key holder according to claim 1 or claim 2. While forming an annular groove on the outer periphery of both open ends,
The key holder according to claim 3, wherein the retaining ring is provided at both ends of the connection fitting. The connecting bracket is
An inner member having a pair of insertion holes into which the open end of the wire body can be inserted;
A cylindrical outer member fitted to the inner member,
The key holder according to claim 3 or 4, wherein the retaining ring is held between both end portions of the inner member and both end edge portions of the outer member. One end of the outer member is integrally formed with an annular edge that can lock the outer periphery of the retaining ring, so that one retaining ring is provided between the one end of the inner member and the annular edge. While holding
The other retaining ring is sandwiched between the other end of the inner member and an annular edge formed by deforming the other end edge of the outer member radially inward. Key chain as described.

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