JP2012202038A - Portable type lock key insertion aid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically turn a key to a key insertion position through a connection body just by holding an outer cylindrical body and bringing a distal end of the connection body close to a keyhole of a lock.SOLUTION: A lock key insertion aid is for rotating a key freely rotatably held by an operation outer cylindrical body in a direction matched with the keyhole when a distal end of the key and the keyhole of the lock provided on a door do not match when inserting the key. A part to be engaged is provided inside a rear end of the operation outer cylindrical body, a connection body having an engaging part which can be engaged and disengaged to/from the part to be engaged at an inner end is supported by the operation outer cylindrical body so as to be freely rotated and moved back, and the connection body is energized in the direction of projecting from a distal end opening of the operation outer cylindrical body by a return spring equipped inside the operation outer cylindrical body. Further, a second magnetic body which performs adsorption corresponding to a polarity of a first magnetic body provided on a keyhole side is provided on a projecting distal end of the connection body, and the key is engaged with the connection body so as to be rotated together.

Description

  The present invention relates to a portable lock key insertion aid.

  In Patent Document 1, “from the viewpoint of barrier-free, the purpose is that the lock can be easily unlocked by pushing the key with a finger”, and “the cam engagement portion and the tip surface on the outer surface of the cylindrical cam. A lock key is disclosed which includes a key body having a blade portion and a storage case having a curved control guide portion which engages with the cam engaging portion and engages with the cam engaging portion.

  This lock key is portable as in the present invention, and is intended to easily lock and unlock the lock, but the intended purpose of the present invention is to “lock the keyhole of the lock. Regardless of the shape, horizontal direction or vertical direction, even if the keyhole angle does not match the key insertion angle, the key tip is automatically rotated to match the keyhole on the lock. Therefore, the problem / configuration of the invention is different.

  Patent Document 2 describes a key storage case including an outer cylinder and an inner cylinder that is slidably engaged with the outer cylinder, and FIG. 1 shows the inner cylinder while holding the outer cylinder. The matter of pressing the front end surface of the body around the lock hole is described.

  However, the object of the invention of Patent Document 2 is to provide a key usage detecting means at a low cost without remodeling the lock, and the problems and configurations of the invention are different as in Patent Document 1.

JP 2007-162230 A FIG. 1 of Japanese Patent Laid-Open No. 2001-207701

  The intended purpose of the present invention is to ensure that the keyhole of the lock does not coincide with the keyhole angle and the key insertion angle, regardless of the shape of the keyhole and whether it is horizontal or vertical. It is to propose a key insertion assisting tool for a lock in which the key automatically turns to the key insertion position via the coupling body only by bringing the front end surface (or the tip of the key) of the coupling body closer. The second object is that the key can be stably held even when the front end surface of the coupling body is pressed around the keyhole when the key is inserted, for example. The third object is that the constituent members can be easily combined. In addition, an outer cylinder body, a coupling body (for example, a cylindrical body), and a key are integrally coupled to realize locking / unlocking operations before locking.

  The portable lock key insertion aid of the present invention is configured such that, when a key is inserted, if the tip of the key does not match the key hole of the lock provided on the door, A key insertion assisting tool for locking in which a key rotates in a direction coinciding with the keyhole, wherein an engaged portion is provided inside a rear end portion of the operation outer cylinder, while the engaged portion is provided on an inner end portion. A connecting body having an engaging portion that can be engaged and disengaged is supported on the operating outer cylinder so as to be rotatable and retractable, and the connecting body is a return spring incorporated in the operating outer cylinder. The second magnetic body that is urged in a direction protruding from the front end opening of the connecting body, and that adsorbs corresponding to the polarity of the first magnetic body provided on the keyhole side is provided at the protruding front end portion of the coupling body, The keys are engaged with each other so that they can rotate with the coupling body, and the keys enter into the keyhole. Then, the connecting body moves backward to a predetermined position against the spring force of the return spring, and the engaging portion of the inner end portion of the connecting body is connected to the engaged portion of the operation outer cylinder. It is characterized by combining. Here, “engagement between the engaged portion and the engaged portion” refers to a connected state of male-female engagement or friction engagement.

(A) Even if the key 11 is not precisely aligned with the key hole a, the key can be moved through the connecting body only by holding the operation outer cylinder and bringing the tip of the connecting body (or the tip of the key) closer to the key hole of the lock. It automatically turns to the key insertion position. Therefore, it is easy to insert the key into the keyhole.
(B) In the invention according to claim 2, for example, when the key is inserted, the axial rear end of the key is supported inside the rear end of the operation outer cylinder, and the front end or the center Since the part (including the part near the center) is supported by the inner end of the link body that can be moved backward, the key is stable at the front and rear positions even when the tip of the link body is pressed around the keyhole. Retained. Therefore, failure of the key insertion aid can be prevented.
(C) In the invention described in claim 3, the combination of the connecting body and the spring member to the operation outer cylinder is easy.
(D) In the invention according to claim 4, when the tip of the coupling body (or the tip of the key) is brought close to the key hole of the lock, the coupling body is not subjected to the spring force (resistance) of the coupling body return spring as much as possible. Can be rotated.

FIG. 1 to FIG. 8 are explanatory views showing the best example (first embodiment) of the present invention. 9 and 10 are explanatory views showing a second embodiment of the present invention. 11 and 12 are schematic explanatory views of the third embodiment of the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS Schematic explanatory drawing which shows the whole environmental state of this invention. Schematic explanatory drawing of an initial state. The schematic explanatory drawing by the side of the keyhole before a lock. The schematic explanatory drawing of the principal part which abbreviate | omitted one part. Explanatory drawing of the principal part which showed the connection body by the virtual line. FIG. 6A is a schematic explanatory view showing the configuration of the distal end surface and the keyhole side of the coupling body. (B) of Drawing 6 is a schematic explanatory view at the time of making the tip side of a connecting object approach a keyhole. Explanatory drawing in which the insertion part of the key has completely entered the keyhole of the lock. Explanatory drawing to the effect that a key, a connection body, and an operation outer cylinder body can rotate integrally. Schematic explanatory drawing which can rotate in the state which a connection body does not receive the spring force (resistance) of a return spring as much as possible. The schematic explanatory drawing of the state which the connection body is moving backward. FIG. 6 is a schematic explanatory diagram of an entire third embodiment. Explanatory drawing of the principal part which abbreviate | omitted the operation outer cylinder.

  Hereinafter, the best mode for carrying out the present invention shown in FIGS. 1 to 8 will be described.

(1) Outline of the Invention FIG. 1 is a schematic explanatory view showing an environment for carrying out the invention. FIG. 2 is a schematic explanatory diagram of the initial state. 1 and 2, X is a lock, a is a key hole of the lock, b is the periphery of the key hole (front surface), Y is a door, and Z is a portable key insertion aid for a lock according to the present invention ( Hereinafter, it is referred to as a “key insertion aid”. When the key 11 is inserted, when the key 11 does not match the key hole a of the lock X provided on the door Y when the key 11 is inserted, the end of the coupling body 21 ( Alternatively, when the tip of the key is approached, the key 11 held rotatably on the operation outer cylindrical body 1 by means of the attractive force of the magnetic bodies 41 and 25 is connected to the keyhole a via the cylindrical connecting body 21. Auto rotate in matching direction.

That is, the key insertion auxiliary tool Z of the embodiment is provided with an engaged portion 3 corresponding to a knife in an annular shape inside the rear end portion 2 of the operation outer cylinder 1 shown in FIGS. 1 and 2, for example. A pipe-like connecting body 21 having a cylindrical engaging portion 23 corresponding to a male which can be engaged with and disengaged from the annular engaged portion 3 at the inner end portion 22 is rotatable and retracted to the operation outer cylindrical body 1. I support it as possible.
Accordingly, the pipe-like connecting body 21 is always urged in a direction protruding from the front end opening 4 of the operation outer cylinder 1 by a return spring 31 built in the operation outer cylinder 1, and further, the pipe-like connection body The one or more second magnetic bodies 25, 25 adsorbed to the protruding tip 24 of the lock 21 in accordance with the polarity of the one or more first magnetic bodies 41, 41 provided on the keyhole a side of the lock X. Is provided. The key 11 is engaged with each other via a long hole-like support hole 26 formed in the front end surface of the coupling body and a flat key tip 11a so that the key 11 can rotate together with the coupling body 21.

  Therefore, when operating the key insertion aid Z, if the tip of the coupling body 21 (or the tip of the key) is brought closer to the key hole a side of the lock X while the key insertion aid Z is picked with a finger, Since the second magnetic bodies 25, 25 on the movable (key insertion auxiliary tool Z) side are attracted in accordance with the polarities of the first magnetic bodies 41, 41 on the fixed (key hole a) side, they are not operated. The pipe-shaped coupling body 21 rotatably held by the cylinder 1 is instantaneously rotated by a required amount (for example, 10 degrees, 30 degrees, 45 degrees, etc.). At this time, the key 11 has a shaft-shaped rear end portion 11b supported by a shaft hole 2a formed inside the rear end portion 2 of the operation outer cylinder 1, and a front end portion 11a and a center portion 11c. Since it is supported by the inner end portion 22 of the connecting body 21 that can be moved backward, even if the front end surface 21a of the connecting body 21 is pressed against the periphery b of the key hole a, the plate-like or bar-like key 11 is located at two places on the front and rear. It is held stably.

  When the key insertion assisting tool Z is pushed into the key hole a side where the flat key tip 11a of the key 11 coincides with the key hole a (insertable position), the key 11 corresponds to entering the key hole a. Thus, the connecting body 21 moves backward to a predetermined position against the spring force of the return spring 31, and the protruding engagement portion 23 of the inner end 22 of the connecting body 21 is the engaged portion of the operation outer cylinder 1. 3 is engaged in a connected state (in this embodiment, engaged or fitted).

  FIG. 3 is a schematic explanatory view of the lock X on the side of the keyhole a. A single or plural (embodiment) first magnetic bodies 41, 41 are embedded in the left and right sides of the horizontal keyhole a. Therefore, at the implementation level, for example, the first magnetic bodies 41 and 41 are provided on the front left and right of the inner cylinder. Of course, the arrangement position of the first magnetic bodies 41, 41 is not limited to the front surface of the inner cylindrical body, and is provided in a protruding state on the distal end surface 21a or the distal end portion of the coupling body 21 on the key insertion auxiliary tool Z side. Since it is necessary to correspond to the provided position, it is appropriately disposed on the front surface of the outer cylinder or the like that wraps the inner cylinder of the lock X.

  FIG. 4 is a schematic explanatory diagram of a main part with a part omitted. FIG. 5 is an explanatory diagram of a main part in which the linking body 21 is indicated by a virtual line. As is clear from these drawings, the “engagement” of the embodiment is not a friction type but a male-female engagement relationship. For example, the engagement portion 23 corresponding to the male is connected to the inner end portion of the coupling body 21. 22 is formed so as to project in the direction of the engaged portion 3 of the operation outer cylindrical body 1, and the shape of the engaging portion 23 is made short, and a large number of engaging teeth are formed on its outer peripheral surface like a spur gear. To do. The length of the short cylindrical engagement portion 23 is set to a required length so that the presence of the return spring 31 does not become an obstacle. Since the male-side engaging portion 23 is formed at the inner end portion 22 of the coupling body 21, in the embodiment, the engaged portion 3 of the operation outer cylinder 1 is formed on the inner wall portion of the rear end portion 2 corresponding to the lid. The shape of the engaged portion 3 formed is an annular groove into which the short cylindrical engagement portion 23 can be engaged, and the inner periphery of the annular groove has a number of engagement teeth as described above. A large number of engaged teeth are formed (see FIG. 8).

(2) Key hole a of lock X
The key hole a of the lock X having the first magnetic bodies 41, 41 may be either in the horizontal direction or in the vertical direction. In addition, the shape of the key hole a is, for example, one having notched key grooves on both side edge portions of the insertion portion referred to as a blade portion, or a geometric groove, inverted frustoconical recess on a flat surface referred to as a blank key, etc. It is sufficient that each of those having a can be inserted. For example, as shown in FIG. 5, since the key 11 of the embodiment is called a blank key, the key hole a of the lock X is, for example, a simple horizontal hole.

(3) Operation outer cylinder 1
In the embodiment, the operation outer cylinder 1 includes a long cylindrical cylinder (unnumbered) having openings at both ends, and a cap-shaped lid 2 fitted into the rear end opening of the long cylindrical cylinder. If comprised in this way, the connection body 21, the return spring 31, etc. can be easily integrated from the rear-end opening of the operation outer cylinder 1. FIG. After the coupling body 21, the return spring 31 and the like are assembled from the rear end opening of the operation outer cylinder 1, the cap-shaped lid 2 is fitted and the lid 1 is long with a plurality of fixing tools. Fix to a cylindrical cylinder.

(4) Linked body 21
As shown in FIGS. 1 and 2, the connecting body 21 that can turn the key 11 protrudes from the distal end opening 4 of the outer cylindrical body 1 by the spring force of the connecting body return spring 31 in the initial state. 11 directly covers the central part (including the part closer to the central part) 11c to the key tip 11a (part of the key 1). For example, the inner end 22 is formed in a flange shape so that the cylindrical or pipe-like connecting body 21 does not come off from the front end opening 4 of the operation outer cylinder 1 in the initial state. The (contact portion) is in contact with the annular stopper portion 5 of the operation outer cylinder 1 with a soft touch. In addition, the spring force of the return spring 31 for the connecting body 21 is set to be fully extended in the initial state so that the resistance force of the return spring 31 does not act on the connecting body 21 as much as possible.

  In addition, the connecting body 21 does not capture (couple) the operation outer cylinder 1 in the initial state, but the connecting body 21 is pressed against the periphery b of the key hole a of the lock X and the return spring for the connecting body. When retracted to a predetermined position against the spring force of 31, the engaging portion 23 engages (captures) the engaged portion 3 of the rear end portion 2 of the operation outer cylinder 1. As a result, the operation outer cylinder 1, the key 11, and the connecting body 21 are integrally coupled.

  Further, as described above, the support hole 26 is formed in the distal end surface of the connection body 21, and the key tip 11 a is engaged with the support hole 26, so that the connection body 21 rotates in either the left or right direction. Then, the key 11 rotates in the same direction together with the connecting body 21.

(5) Configuration / Action FIG. 6A is a schematic explanatory view showing the configuration of the distal end surface 21a of the coupling body 21 and the keyhole a side, while FIG. 6B shows the distal end surface 21a of the coupling body 21. It is a schematic explanatory drawing at the time of making it approach to the keyhole a. FIG. 7 is an explanatory view in which the insertion portion of the key 11 is completely inserted into the key hole a of the lock X. Further, FIG. 8 is an explanatory diagram showing that the key 11, the pipe-like connecting body 21, and the operation outer cylinder 1 can be rotated together.

  As is apparent from these drawings, the lock key insertion assisting tool Z of the embodiment includes a long cylindrical operation outer cylinder 1 having an engaged portion 3 inside the rear end portion 2, and the operation outer cylinder. A rear end (inner end 22) side is inserted into the body 1, and a front end protrudes from the front end opening 4 of the operation outer cylinder 1 and the engaged portion 3 can be engaged and disengaged. A protrusion that is fitted into the operation outer cylinder 1 in a state in which an inner end 22 having an engagement portion 23 is locked to an annular tip portion of the operation outer cylinder 1 and that is connected to the inner end 22. A pipe-like connecting body 21 that wraps part or all (this embodiment) on the tip end side of the key 11 and that can rotate the key while being supported by the operation outer cylinder 1, A return spring 31 for connection housed in the operation outer cylinder 1 so as to bias the connection body 21 toward the distal end side of the key 11, and a door Provided at the tip or tip surface 21a of the projecting portion of the connecting body 21 so as to adsorb in accordance with the polarity of one or more first magnetic bodies 41 provided on the key hole a side of the lock X provided on the lock X. The first magnetic member 25 is composed of a second magnetic body 25. When the key 11 is inserted, the first magnetic member can be obtained simply by bringing the distal end of the pipe-like connecting body 21 close to the key hole a while holding the operation outer cylinder 1 with a finger. The pipe-shaped connecting body 21 rotates by a required amount so that the second magnetic body 25 is attracted to the body 41. As a result, the key 11 is automatically rotated via the pipe-shaped connecting body 21, and the key tip of the key 11 is 11a is a position that can be inserted into the substantially keyhole a.

  Thereafter, when the distal end side of the key 11 is inserted into the keyhole a with the operation outer cylinder 1 still held, the distal end surface 21a of the pipe-like coupling body 21 is pushed by the peripheral surface of the keyhole a. 21 moves backward to a predetermined position, and the cylindrical engaging portion 23 of the inner end portion 22 of the pipe-like connecting body 21 is engaged with the annular engaged portion 3 of the operation outer cylinder 1 in a connected state. At this time, the operation outer cylinder 1, the key 11, and the connection body 21 are integrally connected. When the operation outer cylinder is rotated in the direction of unlocking and unlocking while holding the operation outer cylinder 1, the key 11 is It rotates together with the connecting body 21.

In the first embodiment of the present invention, the wire diameter, the number of turns, the strength, and the like of the return spring 31 are items that are appropriately set in consideration of the rotation and backward movement of the coupling body 21. Desirably, the front end portion of the return spring 31 is formed in a ring shape, and the connecting body 21 is designed to slide smoothly. Further, in the embodiment, the positions of the first magnetic bodies 41 on the lock side are arranged on the left and right in the major axis direction of the key hole a, but may be arranged on the upper and lower sides in the minor axis direction of the key hole a. In this case, the position of the second magnetic body 25 on the coupling body side is also arranged at the corresponding position. In short, it is only necessary that the key hole a and the key tip 11a coincide with each other at the place where the second magnetic body 25 on the coupling body is attracted to the first magnetic body 41 on the lock side.
Hereinafter, in this section, second and third embodiments of the present invention will be described. In the description of these embodiments, the same parts as those in the first embodiment are denoted by the same or similar reference numerals, and redundant descriptions are omitted.

  9 and 10 are explanatory diagrams showing a second embodiment of the present invention. The feature of the second embodiment is that the operation outer cylinder 1A includes an inner sliding portion 30A that slidably supports the inner end portion 22A of the coupling body 21A and that supports the spring tip portion of the return spring 31A. It is. The distal end portion of the operation outer cylinder 1A of the second embodiment is formed in a stepped section, and a small diameter in which a part of the flange-shaped inner end portion 22A of the pipe-like connecting body 21A is loosely fitted in the stepped section. An annular recess 6 is included. Further, an annular stopper surface 7 with which the front surface of the annular sliding body 30 abuts is formed at the stepped portion (inside the tip). The annular sliding body 30 is formed of a synthetic resin material having a sliding function into a donut shape with a stepped cross section, and the front large-diameter hole always supports the inner end 22A of the connecting body 21A, while the rear side The small diameter hole is externally fitted to the cylindrical engagement portion 23. The rear end surface of the annular sliding body 30 receives the spring tip of the return spring 31A.

  FIG. 9 shows that the pipe-like connecting body 21A can rotate in a state where it does not receive the spring force (resistance) of the return spring 31A as much as possible. FIG. 10 shows a state where the pipe-like connecting body 21A is moving backward.

  11 and 12 are schematic explanatory views of a third embodiment of the present invention. In the third embodiment, a large number of stepped projections 23a are provided on the end surface of the engaging portion 23 projecting from the inner end portion 22 of the connecting body 21B, while the rear end portion of the operation outer cylinder 1 is provided. 2 is that an engaged portion 3B (for example, a rubber plate) having a frictional resistance is attached to the inner wall surface. Thus, the engagement / disengagement structure between the engaging portion 23 and the engaged portion 3B may be a known and well-known clutch mechanism (unevenness between opposing surfaces of the disk body, friction engagement with a rubber plate, etc.).

  The present invention is mainly used in the locksmith and joinery industries.

  X ... lock, a ... keyhole, b ... surrounding the keyhole, Y ... door, Z ... key insertion aid, 1, 1A ... operation outer cylinder, 2 ... rear end, 3, 3B ... engaged portion, 4 ... opening of tip, 5 ... stopper portion, 6 ... annular recess, 11, 11A ... key, 11a ... key tip, 11b ... axial rear end portion, 21, 21A, 21B ... coupling body, 21a ... tip surface, 22, 22A ... Inner end portion, 23 ... Engagement portion, 24 ... Projection tip, 25 ... Second magnetic body on the coupling body side, 30 ... Annular slide body, 31, 31A ... Return spring, 41 ... First magnetic body on the lock side .

Claims (4)

When the key is inserted, if the tip of the key and the keyhole of the lock provided on the door do not match, the key for lock that rotates in the direction in which the key rotatably held in the operation outer cylinder matches the keyhole An insertion assisting tool, wherein a engaged part is provided inside a rear end part of the operation outer cylindrical body, and on the other hand, a coupling body having an engaging part detachable from the engaged part at an inner end part. The operation outer cylinder body is rotatably and reversibly supported, and the coupling body is urged in a direction protruding from the distal end opening of the operation outer cylinder body by a return spring built in the operation outer cylinder body, The projecting tip of the coupling body is provided with a second magnetic body that adsorbs corresponding to the polarity of the first magnetic body provided on the keyhole side, and the keys are engaged with each other so that they can rotate together with the coupling body. A key insertion aid for a lock characterized by being combined. 2. The pipe according to claim 1, wherein the axial rear end portion of the key is supported inside the rear end portion of the operation outer cylinder, and at least one of the front end portion and the central portion can be moved backward. A key insertion auxiliary tool for locks, which is supported by an inner end portion of the connecting body. 3. The operation outer cylinder according to claim 1, wherein the operation outer cylinder includes a long cylindrical cylinder having openings at both ends and a cap-shaped lid fitted to the rear end opening of the long cylinder. A key insertion aid for locks. 2. The key insertion aid for a lock according to claim 1, wherein the operation outer cylinder body is provided with an annular sliding body that slidably supports the inner end portion of the coupling body and supports the distal end portion of the return spring. .

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