JP4478528B2 - Case locking device - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a case locking device suitable for use in cases such as travel suitcases and trunk cases.

  For example, in cases such as suitcases, where valuables are stored and handled separately from the owner's hand, high reliability is required for the locking device (hereinafter also referred to as “case locking device”). Is done. Conventionally, this type of case locking device 1 includes, as shown in FIG. 6, a suitcase 9 including a case body 5 having a handle 3 and a lid body 7 that can be opened and closed on the case body 5. A pair of left and right identical parts are provided on the case body 5 side, and locking and unlocking are performed so that the lid body 7 cannot be opened and closed with respect to the case body 5.

  As shown in FIG. 7, the case locking device 1 is formed in a rectangular shape in a plan view, and is provided with a latch 11 and a release piece 13 at end portions facing both sides (left and right sides in FIG. 6) of the suitcase 9. In addition, a key insertion opening 19 into which a plate key 17 as a key is inserted is provided between the lock body 15 and the latch 11. In FIG. 7, reference numeral 21 denotes a lock / unlock state display unit that switches display contents according to the lock state / unlock state of the case locking device 1.

  Conventionally, this type of case locking device 1 has a slider (not shown) that is slidable only by inserting a key, as disclosed in Patent Document 1 below. The slider has a plurality of tumblers, the shear lines of these tumblers coincide with each other by inserting a key, and the slider is disengaged from the lock body 15 and can move. A lock bolt (not shown) is built in the lock body 15, and the lock bolt is sequentially switched to a locked posture / unlocked posture by the movement of the slider, and operates to lock and unlock the lid body on the case body.

Therefore, when the plate bolt 17 is inserted into the key insertion opening 19 when the lock bolt is in the unlocking posture, the slider can be moved. When the slider is moved by pressing the plate key 17, the lock bolt is unlocked. The posture is switched to the locked posture, and the lid body 7 is locked to the case main body 5 through the lock bolt.
JP 2001-107620 A

  In the conventional case locking device described above, the movement of the slider having a plurality of tumblers is restricted by locking the tumblers to the lock body. Since this slider includes a plurality of tumblers and biasing means (coil springs) for each tumbler and is made of a metal block body having a predetermined strength, the slider is relatively heavy. Further, even when the slider is in a non-movable state where the tumbler is locked to the lock body, the slider can be moved slightly due to the manufacturing intersection of the slider itself, the tumbler, the tumbler locking portion of the lock body, and the like. Under these circumstances, when an external force due to impact or vibration is applied to the suitcase, the slider may be slightly moved by the inertial force, and the slightly moved slider may come into contact with the lock bolt. When the contact by the fine movement is repeated, the lock bolt is gradually rotated, and in some cases, there is a possibility that the lock posture is changed to the lock release posture. Also, by operating the tumbler while applying the pushing force to the slider, all the tumblers are placed on the shear line, the slider is unlocked, and so-called picking that performs unauthorized unlocking, It was necessary to have high crime prevention.

  The present invention has been made in view of the above situation, and provides a case locking device in which a slider is finely moved even when an impact or the like is applied, and a lock bolt is not unlocked by repetition of the movement. The purpose is to improve the security and reliability of the locking device.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
A case locking device 100 according to the present invention includes a lock body A fixed to a case body 5 having a lid 7 that can be freely opened and closed, and a lock key G inserted therein. The lock body A is rotatably provided at a predetermined angle. A lock bolt C that repeats a lock posture and a lock release posture with respect to the lid body 7 each time it is rotated, and a plurality of tumblers 55a to 55c are arranged so as to be orthogonal to each other along the insertion direction of the key G. wherein is provided inside the lock body a, the lock bolt C by the mobile becomes movable only by insertion of the master key G by following the release state the tumbler 55a~55c from the locking state to the insertion direction of the master key G Te and a slider D to a predetermined angular rotation, protrude biased in a direction contrary to the insertion direction of the duplicate key G to duplicate key insertion space 35 of the slider D, the in the insertion direction leading end side of the master key G Together to arrange the Nbura 55c to the pressing and locking state, anda regulating plate E to release the pressing of the tumbler 55c are extruded from the duplicate key insertion space 35 by the insertion of the master key G.
In the present invention, the insertion of the key G together with the restriction plate E from the state where the restriction plate E is pushed out from the key insertion space 35 by the insertion of the key G further causes the slider D to insert the key G together with the restriction plate E. The lock bolt C is moved in a direction and rotated by a predetermined angle .

  In the case locking device 100, when the tumbler 55c is pressed by the restricting plate E, the tumbler 55c is forcibly locked and fixed to the lock body A side, and the tumbler 55c is brought into the locked position by the biasing force of the spring. Compared to the case where only the arrangement is made, that is, the case where the arrangement is made movably and the locking position is set, the resistance (holding force) against the impact and vibration is enhanced. In addition, since at least one tumbler 55c is covered with the restriction plate E, all of the tumblers 55a, 55b, and 55c are difficult to visually recognize. Further, even when picking is performed in which a thin rod or the like is inserted and the tumblers 55a, 55b, 55c are illegally operated while applying a pushing force to the slider D, the restricting plate E is inserted into the insertion space 35 by the biasing means 85 each time. And the tumbler 55c is covered.

  According to the case locking device of the present invention, in the case locking device for moving the slider by inserting the key and rotating the lock bolt to the unlocking posture, at least one pressed tumbler is disposed in the locked state. Since the restriction plate that is pushed out of the insertion space by the insertion of the key and is released from the tumbler release is provided, the tumbler is forcibly fixed and locked to the lock body side by the depression of the restriction plate. In the insertion space, a key (different key) different from the combined key is inserted, and the tumbler is pushed down and locked to the lock body side, and the tumbler is arranged at the locking position by the biasing force of the spring. Compared to the case of only the case, it is possible to increase the resistance to shock and vibration. Therefore, even when an impact or the like is applied, it is possible to prevent a situation in which the tumbler is unlocked or the slider is finely moved by the inertial force and the lock bolt is rotated to the unlocking posture due to the repetition. Further, since at least one tumbler is covered with the restriction plate, all of the tumblers cannot be visually recognized, and picking can be made difficult. Furthermore, even if a picking operation is performed to insert a thin rod or the like and improperly operate the tumbler while applying a pushing force to the slider, the restriction plate protrudes into the insertion space by the biasing means each time and covers the tumbler. , Making it difficult to pick all tumblers illegally placed on the shear line. As a result, it is possible to prevent unexpected unlocking due to vibration / impact and unauthorized unlocking due to picking, and to improve the reliability and security of the case locking device.

DESCRIPTION OF EMBODIMENTS Hereinafter, a preferred embodiment of a case locking device according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a sectional view of a case locking device according to the present invention in an unlocked state, FIG. 2 is a perspective view of a slider and a plate key, and FIG. 3 is an enlarged perspective view of the slider shown in FIG. In addition, the same code | symbol is attached | subjected to the member same as the member shown in FIG. 6, FIG. 7, and the overlapping description shall be abbreviate | omitted.
The case locking device 100 according to the present embodiment includes a lock body A, a latch B, a lock bolt C, a slider D, a restriction plate E, and a plate key G as a key, as main components. ing.

  The suitcase 9 can be freely opened and closed with respect to the case body 5. A lock body A of the case locking device 100 is fixed to the case body 5. The lock body A is unlocked by a swinging portion (not shown) located on the left side of FIG. 1 and the latch B is unlocked, so that the right end side in the figure jumps upward. At the right end of the lock body A, a latch B is rotatably provided via a shaft 31, and the latch B is locked to a locking plate (not shown) provided on the lid body 7 at its lower end at one swinging position. By doing so, the opening of the lid 7 is regulated. The latch B can be rotated in the unlocking direction (in the direction of arrow a in FIG. 1) by an operating piece 33 that is rotatably provided on the lock body A together with the latch B.

  An insertion space 35 for the plate key G is formed in the lock body A, and the insertion space 35 is opened as a key insertion port 37. More specifically, the insertion space 35 is formed in the slider D accommodated in the lock body A. That is, the plate key G inserted from the key insertion port 37 is inserted into the slider D (insertion space 35) in the lock body A. An opening closing piece 39 is obliquely extended on the top of the latch B, and the opening closing piece 39 closes the key insertion opening 37 in the latched state of the latch B. The latch B is configured such that when the plate key G having a predetermined thickness is inserted into the key insertion port 37, the opening closing piece 39 is pressed and rotated in the unlocking direction, so that the latch with the lid body 7 is released. It has become.

  A lock bolt C is built in the lock body A, and the lock bolt C is rotatable by fitting a recess 41 on the upper end surface with a protruding shaft 43 of the lock body A. A long lock rod 45 is provided at the lower end of the lock bolt C in the left-right direction in FIG. 1. The lock rod 45 can be inserted and removed by making the longitudinal direction coincide with the slit 47 formed in the lid body 7. By disposing in the direction orthogonal to the longitudinal direction of the slit 47, removal from the lid body 7 becomes impossible (locked state). As will be described later, the lock bolt C is rotated by a predetermined angle (for example, 90 °) by pushing the slider D, and repeats the lock posture and the lock release posture.

  Further, a display disk 49 is fitted on the outer periphery of the shaft at the upper end of the lock bolt C so as not to be relatively rotatable, and the display disk 49 is marked with a lock mark every 180 °. The lock mark of the display disk 49 is visible from the display window 51 formed in the upper surface of the lock body A. That is, when the lock bolt C is rotated every 90 ° in one direction, the lock mark and the non-lock mark (no mark) are repeatedly displayed from the display window 51, and the lock / unlock state of the case lock device 100 can be visually recognized. It is like that.

  The slider D is urged to the right in FIG. 1 by a compression coil spring 53 as urging means in the lock body A. A plurality of (three in the present embodiment) tumblers 55 a, 55 b, 55 c are arranged on the slider D in the insertion direction of the plate key G, and the tumblers 55 a, 55 b, 55 c face the insertion space 35. The tumblers 55a to 55c have a plate shape that is long in the width direction of the slider D (the direction orthogonal to the plane of FIG. 1), and a pair of triangular protrusions 57 are spaced apart in the longitudinal direction on the top surface. A lid member 59 is fixed to the lower surface of the slider D, and compression springs 61, 61, 61 are disposed between the lid member 59 and the respective tumblers 55a to 55c. The tumblers 55a to 55c are inclined such that one end in the longitudinal direction is positioned upward and the other end is positioned downward, or both ends are positioned upward by the urging force of the compression spring 61. The tumblers 55 a to 55 c are horizontally arranged against the urging force of the compression spring 61 from the inclined arrangement by inserting the regular plate key G into the insertion space 35.

  The plate key G is provided with a plurality of entry holes 63 corresponding to the triangular protrusions 57 of the tumblers 55a to 55c. In each tumbler 55a to 55c, the triangular protrusion 57 enters the entry hole 63 at a predetermined depth only by inserting the plate key G in which the predetermined entry hole 63 is drilled, and as a result, is horizontally disposed. It is like that. Locking protrusions 65, 65 are provided at both longitudinal ends of the tumblers 55 a to 55 c, and the locking protrusions 65 are locked in locking grooves (not shown) formed on the inner wall of the lock body A. The locking projections 65 of the tumblers 55a to 55c are disengaged from the locking grooves of the lock body A and allow the slider D to move only when the tumblers 55a to 55c are horizontally arranged by the plate key G. That is, in the normal state, in the slider D, all the tumblers 55a to 55c are engaged only in the state in which the plate key G is inserted while the locking projection 65 is locked in the locking groove of the lock body A and cannot slide. As a result, the locking projection 65 is disengaged from the locking groove (the shear lines are coincident), and the plate key G can be moved in the insertion direction.

  A long through hole 67 is formed in the slider D in the moving direction, and the central portion of the lock bolt C is passed through the through hole 67. A lock bolt engaging pin 69 protrudes from the slider D by a spring 71, and the lock bolt engaging pin 69 is formed on the flange portion 73 of the lock bolt C at intervals of 90 ° each time the slider D is moved. Abutting on the stepped portion, the lock bolt C is rotated every 90 °.

  As shown in FIG. 3, a pair of guide grooves 83 and 83 are formed in both sides of the insertion space 35 of the slider D along the insertion direction of the plate key G. The guide grooves 83, 83 guide the insertion of the plate key G by allowing both side edges of the plate key G to enter. A restricting plate E protrudes into the insertion space 35 so as to be retractable, and the restricting plate E is allowed to slide in the inserting direction of the plate key G by causing both side edges to enter the guide grooves 83 and 83. In the present embodiment, the restricting plate E has a thickness substantially equal to that of the plate key G.

  A compression spring 85 is disposed between the rear portion of the restriction plate E and the inner wall of the slider D, and the compression spring 85 urges the restriction plate E in a direction opposite to the insertion direction of the plate key G. An unillustrated pop-up restricting means is provided between the restricting plate E and the slider D, and this pop-out restricting means restricts the restricting plate E from popping out of the tumbler 55c at the rearmost part. That is, the last tumbler 55c is covered with the restriction plate E.

  The tumbler 55c covered with the restriction plate E is pushed down against the urging force of the compression spring 61 by the restriction plate E, and the engagement protrusion 65 is engaged with the engagement groove of the lock body A. When the plate key G is inserted into the insertion space 35, the restricting plate E is pushed at the tip of the plate key G and is withdrawn from the insertion space 35. Thereby, the pressing on the tumbler 55c by the restriction plate E is released. The tumbler 55c is pushed down a predetermined length by the plate key G this time when the regulating plate E is withdrawn.

Next, the operation of the case locking device 100 configured as described above will be described.
FIG. 4 is a cross-sectional view of the case locking device into which the plate key is inserted, and FIG. 5 is a cross-sectional view in a state where the slider is moved by the plate key and the lock bolt is in the locked position.
In the unlocked state of the lock bolt C shown in FIG. 1, the lock rod 45 of the lock bolt C is arranged in the same direction as the slit 47 of the lid body 7. Therefore, when the operation piece 33 is operated and the latch B is rotated in the direction of the arrow a, the latch between the latch B and a not-shown locking plate is released. In this state, the lid body 7 can be opened from the case body 5 by flipping the right end of the lock body A upward.

  On the other hand, as shown in FIG. 4, when the plate key G is inserted from the key insertion slot 37, the opening closing piece 39 of the latch B is pressed, the key insertion slot 37 is opened, and the latch B is moved in the direction of arrow a. Is rotated to. When the plate key G is inserted into the key insertion slot 37, the restriction plate E covering the tumbler 55c is pushed in by the plate key G, and the restriction plate E is withdrawn from the insertion space 35. When the plate key G pushes in the restriction plate E and is completely inserted into the insertion space 35, the triangular protrusions 57 of the tumblers 55a to 55c located on the upper surface of the slider D become the predetermined entry holes 63 of the plate key G, respectively. Enter (see FIG. 2).

  Each tumbler 55a, 55b, 55c is horizontally arranged by the combination of the protruding shape of each triangular projection 57 and the inner diameter of the entry hole 63, as each triangular projection 57 enters the predetermined entry hole 63, and When all the tumblers 55a to 55c are horizontally disposed, the locking projections 65 (see FIG. 2) on both sides of the tumblers 55a to 55c are disengaged from the locking grooves (not shown) of the lock body A, that is, the shear lines are aligned. The slider D can be moved.

  In this state, as shown in FIG. 5, when the plate key G is further pushed, the slider D is moved to the left in FIG. 5, and the lock bolt engagement pin 69 provided on the slider D becomes the lock bolt C. Engage and rotate the lock bolt C by 90 °. When the lock bolt C is rotated 90 ° from the unlocking posture shown in FIG. 1, the lock rod 45 is arranged in a direction perpendicular to the longitudinal direction of the slit 47 (state of FIG. 5), and the lid body 7 is The case body 5 is locked via the lock rod 45.

  In this locked state, when the plate key G is pulled out, the latch B is again placed in the locking position. At the same time, the restricting plate E is urged by the compression spring 85 and again protrudes into the insertion space 35, and is disposed on the tumbler 55c. The tumbler 55c is pushed down by the upward movement of the restricting plate E, and the locking projections 65, 65 are locked in the locking grooves of the lock body A.

  The other tumblers 55a and 55b are also arranged in an inclined manner by the urging force of the compression springs 61 and 61 when the plate key G is removed, and are locked in the locking grooves of the lock body A. In the case of the tumblers 55a and 55b, the tumblers 55a and 55b are movably disposed at the locking position while being urged by the compression springs 61 and 61. The locking state is different from the tumbler 55c that is forcibly arranged at the position of the state.

  According to the case locking device 100 described above, in the case locking device 100 in which the slider D is moved by inserting the plate key G and the lock bolt C is rotated to the unlocking posture, at least one pressed tumbler 55c is locked. Since the restriction plate E that is pushed out of the insertion space 35 by the insertion of the plate key G and releases the pressing of the tumbler 55c is provided, the tumbler 55c is forcibly pressed by the pressing of the restriction plate E. That is, the tumbler 55c is maintained in the locked state as in a state where a key (different key) different from the combined key is inserted in the insertion space 35. And from this, compared with the case where the tumbler 55c is only disposed at the locking position by the urging force of the compression spring 61, it is possible to increase the resistance to shock and vibration. Therefore, even when an impact or the like is applied, it is possible to prevent a situation in which the tumbler 55c is unlocked or the slider D is slightly moved by the inertial force, and the lock bolt C is rotated to the unlocking posture due to the repetition. it can.

  Further, since at least one tumbler 55c is covered with the restriction plate E, all of the tumblers 55a, 55b, and 55c cannot be visually recognized, and picking can be made difficult.

  Further, even when picking is performed by inserting a thin rod or the like and improperly operating the tumblers 55a, 55b, 55c while applying a pushing force to the slider D, the restriction plate E is moved into the insertion space 35 by the compression spring 85 each time. Since it protrudes and covers the tumbler 55c, it is difficult to pick all the tumblers 55a, 55b, 55c simultaneously with the shear line.

  As a result, it is possible to prevent unexpected unlocking due to vibration / impact and unauthorized unlocking due to picking, and to improve the reliability and security of the case locking device 100.

In the above-described embodiment, the case where the compression spring 85 is provided between the restriction plate E and the slider D has been described as an example. However, the case locking device according to the present invention uses the compression spring 85 as the slider D. It is good also as a structure which is made to penetrate and is supported by the inner wall of the lock main body A. That is, according to this structure, the restricting plate E receives the reaction force from the inner wall of the lock body A and protrudes into the insertion space 35.
With such a configuration, the urging force of the compression spring 85 can be applied to the slider D by the contact friction force between the regulating plate E and the tumbler 55c, thereby increasing the urging force to the slider D, Movement of the slider D due to vibration / impact can be made difficult to occur.

  If the slider D is penetrated and the compression spring 85 is supported from the lock body A as described above, the slider D and the restriction plate E can be simultaneously urged by the single compression spring 85, and the compression coil spring 53. The number of parts can be reduced by omitting.

It is sectional drawing of the unlocking state of the locking device for cases which concerns on this invention. It is a perspective view of a slider and a plate key. FIG. 3 is an enlarged perspective view of the slider shown in FIG. 2. It is sectional drawing of the locking device for cases in which the plate key was inserted. It is sectional drawing in the state where the slider was moved by the plate key and the lock bolt was in the locked posture. It is a top view of the suitcase provided with the case locking device. It is a top view of the locking device for cases provided in the suitcase of FIG. 6, and its plate key.

Explanation of symbols

DESCRIPTION OF SYMBOLS 7 ... Cover body 5 ... Case main body 35 ... Insertion space 55a-55c ... Tumbler 100 ... Locking device for cases A ... Lock body C ... Lock bolt D ... Slider E ... Restriction board G ... Key lock (plate key)

Claims (1)

A lock body (A) fixed to a case body (5) having a lid (7) that can be freely opened and closed and into which a key (G) is inserted;
A lock bolt (C) that is rotatably provided on the lock body (A) and repeats a lock posture and a lock release posture with respect to the lid (7) each time the lock body (A) is rotated by a predetermined angle;
A plurality of tumbler (55a to 55c) is provided inside the aligned said it has to lock body (A) so as to be perpendicular along the insertion direction of the master key (G), only by insertion of the master key (G) A slider (D) that allows the tumblers (55a to 55c) to be moved from the locked state to the released state to move in the insertion direction of the key (G) and to rotate the lock bolt (C) by a predetermined angle;
The slider (D) is pushed and protruded from the direction opposite to the direction in which the key (G) is inserted into the key-key insertion space (35), and the tumbler (55c) on the distal side in the direction of insertion of the key (G ) is pressed down. causes disposed locked state, restricting plate for releasing the pressing of the master key (G) said tumbler being extruded from the duplicate key insertion space (35) by insertion of (55c) and (E),
Equipped with,
From the state where the restriction plate (E) is pushed out of the joint key insertion space (35) by inserting the key (G), the key (G) is further inserted, so that the slider (D) is moved to the restriction plate. The case locking device moves in the direction of inserting the key (G) together with (E) and rotates the lock bolt (C) by a predetermined angle .

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