JP2006045770A - Locking device for case - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a locking device for a case prevented from being unlocked by directly moving a slider by vibration, impact, or picking. <P>SOLUTION: This locking device 100 for the case comprises: a lock body A into which a duplicate key G is to be inserted; a lock bolt C which is turnably provided in the lock body A and which repeats a locking attitude and an unlocking attitude each time turned at a predetermined angle; the slider D which is internally provided in the lock body A in the state of having a plurality of tumblers 55a-55c, and which can be moved only by the insertion of the duplicate key; a magnet E which is movably and internally provided in the slider D and which is moved in the same direction by the insertion of the duplicate key; and a magnet pin F which becomes freely movable in a direction orthogonal to the locus of the movement of the magnet E, and both movement-direction ends of which serve as different poles, and where the same poles of the moved magnet E face each other in the inserted state of the duplicate key and are arranged in such a manner as to be protruded by a magnetic repellent force, so that the lock bolt C can be turned by the predetermined angle along with the movement of the slider D. <P>COPYRIGHT: (C)2006,JPO&NCIPI

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. 12, a suitcase 9 including a case body 5 having a handle 3 and a lid body 7 that can be freely opened and closed to the case body 5, for example. 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. 13, the case locking device 1 is formed in a rectangular shape in a plan view, and a latch 11 and a release piece 13 are provided at end portions facing both sides (left and right sides in FIG. 12) 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. 13, 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 directly to the slider, all the tumblers are placed on the shear line, the slider is unlocked, and so-called picking is performed to perform unauthorized unlocking. It was also necessary to have high crime prevention.

  The present invention has been made in view of the above circumstances, and provides a locking device for a case in which the lock bolt is not unlocked by vibration, impact, or direct slider movement due to picking. 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 claim 1 of the present invention includes a lock main body A fixed to a case main body 5 having an openable / closable lid 7, and into which a joint key G is inserted,
A lock bolt C that is rotatably provided in the lock body A and repeats a lock posture and a lock release posture with respect to the lid body 7 each time the lock body A is rotated by a predetermined angle;
A slider D having a plurality of tumblers 55a to 55c, which is provided in the lock main body A and can be moved in the insertion direction of the key G by moving the tumblers 55a to 55c only by inserting the key G;
A magnet E which is movably provided in the slider D and is moved in the same direction by the insertion of the key G, and both ends of the moving direction have different polarities;
The slider D is provided in the slider D so as to be movable in a direction orthogonal to the movement locus of the magnet E, and both ends of the movement direction are different polarities. When the key G is not inserted, the different polarities of the magnet E face each other and are attracted. On the other hand, in the inserted state of the key G, the same pole of the moved magnet E is faced and arranged to protrude by a magnetic repulsive force, so that the lock bolt C is rotated by a predetermined angle as the slider D moves. Magnet pin F,
It is characterized by comprising.

  In the case locking device 100, when the key G is not inserted, the magnet E is disposed at the non-moving position, and the magnet E and the magnet pin F face each other with different polarities. Therefore, the magnet pin F is attracted and arranged on the magnet E side and is in a non-projecting state. On the other hand, in the insertion state of the key G, the magnet E is moved with the insertion of the key G, and the magnet E and the magnet pin F face each other with the same polarity. Therefore, the magnet pin F is moved by the magnetic repulsive force received from the magnet E, and enters a protruding state. When the key G is further pushed in this projecting arrangement state and the slider D is moved, the magnet pin F hits the lock bolt C, and the lock bolt C is rotated by a predetermined angle as the slider D moves. As a result, the case locking device 100 is locked and unlocked. That is, if the key G is inserted and the magnet E is not moved, even if the slider D is moved due to vibration or impact, the magnet pin F and the lock bolt C do not interfere with each other, and the lock bolt C is unlocked. It will not be rotated until. Further, even when a picking force is applied to unlock the tumblers 55a to 55c by applying a pushing force to the slider D and improperly unlocking the tumblers 55a to 55c, the unlocked slider D only moves idle. There is no unlocking.

  According to the case locking device of the first aspect 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, the case is moved in the same direction as the key insertion. A magnet is installed in the slider, and when the key is inserted, the same pole of the moved magnet is faced and protruded by the magnetic repulsive force, so that the magnet pin that rotates the lock bolt by a predetermined angle as the slider moves is used as the slider. Since the internal key is not inserted, the different polarity of the magnet faces the magnet pin when the key is not inserted, and the magnet pin is attracted and arranged so as not to interfere with the lock bolt. Therefore, even if vibration or impact is applied and the slider is moved, it is possible to prevent the lock bolt from being rotated to the unlocking posture. In addition, even when picking is performed to improperly unlock the tumbler by inserting a thin rod etc. while applying a pushing force to the slider, the slider will only move idly without interfering with the lock bolt, and unlocking will be possible. It wo n’t happen. 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.
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 the lock bolt shown in FIG. 1, FIG. 3 is a perspective view of a slider and a plate key, and FIG. FIG. 5 is an enlarged cross-sectional view of the main part of FIG. 1, and FIG. 6 is an illustration of the operation of the lock bolt showing the non-moving state of the slider in (a) and the return start state of the slider in (b). FIG. In addition, the same code | symbol is attached | subjected to the member same as the member shown in FIG. 12, FIG. 13, and the overlapping description shall be abbreviate | omitted.
The case locking device 100 according to the present embodiment is mainly composed of a lock body A, a latch B, a lock bolt C, a slider D, a magnet E, a magnet pin F, and a plate key G which is a combined key. It has as a member.

  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 main body A is unlocked by a swinging part (not shown) located on the left side of FIG. 1 and the latch B is unlocked, so that the right end side 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 a lock posture and a lock release posture.

  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.

Here, the lock bolt C will be described more specifically.
As shown in FIG. 2, the lock bolt C has a shaft portion 75 whose upper end is the above-described recess 41. The shaft portion 75 has a cylindrical portion 77, a rectangular column portion 79, a flange portion 73, The collars 45 are sequentially formed. On the upper surface of the flange portion 73, inclined surfaces 81 are formed at intervals of 90 ° in the circumferential direction. The inclined surface 81 is continuous with the flat surface 83. A step portion 85 is formed between the flat surface 83 and the next inclined surface 81. In addition, hooking grooves 87 in the axial direction are formed on the four side surfaces of the quadrangular column portion 79. In the figure, reference numeral 89 denotes a neck portion that connects the flange portion 73 and the lock rod 45.

  Indentations 91 are formed on the outer periphery of the flange portion 73 at intervals of 90 °. On the other hand, a leaf spring 93 is disposed on the lock body A (see FIG. 4), and the leaf spring 93 has a convex portion 93a. The leaf spring 93 is disposed such that the convex portion 93 a is in pressure contact with the recess 91 of the flange portion 73. Therefore, every time the flange portion 73 rotates, the leaf spring 93 is elastically deformed, and the convex portion 93a is advanced and retracted into the recess 91, thereby restricting the rotation of the lock bolt C every 90 °.

  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 in 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. As shown in FIG. 3, the tumblers 55 a to 55 c 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 upper 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 be slid. 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 cylindrical portion 77 of the lock bolt C is passed through the through hole 67. The through hole 67 has a different shape on the lower side of the slider D. That is, as shown in FIG. 6, the through hole 67 is a substantially trapezoidal through hole 95 having an inclined wall 94 on the lower side of the slider D. A rectangular column portion 79 of the lock bolt C is inserted into the through hole 95.

  As shown in FIG. 5, a magnet accommodation space 97 is formed in the slider D, and a magnet E is accommodated in the magnet accommodation space 97 so as to be movable forward and backward. A compression spring 99 is disposed in the magnet housing space 97, and the compression spring 99 biases the magnet E in a direction opposite to the insertion direction of the plate key G (left side in FIG. 5). A partition wall 101 is formed on the slider D, and the partition wall 101 restricts the ejection of the magnet E by the compression spring 99. A protruding hook 103 protrudes from the end surface of the magnet E opposite to the compression spring 99, and the protruding hook 103 protrudes into the insertion space 35.

  When the plate key G is inserted into the insertion space 35, the magnet E is pushed back by the tip of the plate key G and moved back into the magnet housing space 97 against the urging force of the compression spring 99. The That is, the plate key G is moved in the same direction by insertion. The magnet E has opposite polarities (S pole and N pole) at both ends in the moving direction. In the present embodiment, the compression spring 99 side is the N pole, and the protruding flange 103 side is the S pole.

  The slider D is further formed with a pin accommodating space 105 below the magnet accommodating space 97, and the pin accommodating space 105 accommodates the magnet pin F. By inserting the magnet pin F into the pin accommodating space 105, the magnet pin F can be moved in a direction orthogonal to the movement locus of the magnet E. That is, it can move up and down in FIG. And this magnet pin F also has a different polarity (S pole and N pole) at both ends in the moving direction. In the present embodiment, the side facing the magnet E is the S pole, and the side facing the flange portion 73 is the N pole.

  When the plate key G is not inserted, the magnet E is arranged at a position where it abuts against the partition wall 101 by the urging force of the compression spring 99 (state shown in FIG. 5). In this state, the magnet E and the magnet pin F are opposite to each other, and as a result, the movable magnet pin F is attracted to the magnet E and arranged on the upper side.

Next, the operation of the case locking device 100 configured as described above will be described.
FIG. 7 is an operation explanatory diagram showing the rotation state of the lock bolt accompanying the movement of the slider in (a) to (d), FIG. 8 is an operation explanatory diagram of the plate key insertion state, and FIG. FIGS. 10 and 10 are operation explanatory diagrams in a state where the pressing of the plate key is completed, and FIG. 11 is an operation explanatory diagram in a state where the plate key is removed.
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, 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 rotated in the direction of arrow a. When the plate key G is inserted into the key insertion slot 37, the triangular protrusions 57 of the tumblers 55a to 55c positioned on the upper surface of the slider D enter the respective predetermined entry holes 63 (see FIG. 2) of the plate key G. .

  Each tumbler 55a, 55b, 55c is arranged horizontally by the combination of the protruding shape of each triangular projection 57 and the inner diameter of the entry hole 63 when the triangular projection 57 enters the predetermined entry hole 63. When the tumblers 55a to 55c of the tumblers 55a to 55c are horizontally arranged, the locking projections 65 (see FIG. 3) 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.

  At the same time, the protruding rod 103 protruding into the insertion space 35 is pressed by the tip of the plate key G as shown in FIG. As a result, the magnet E is moved into the magnet housing space 97 against the urging force of the compression spring 99. When the magnet E is moved, the south pole of the magnet E is arranged above the magnet pin F, and a magnetic repulsive force is generated by the south pole of the magnet pin F, and the magnet pin F is suspended from below the slider D. Protruding.

  When the plate key G is further pressed in this state, the slider D is moved to the left in FIG. When the slider D is moved, the stepped portion 85 of the flange portion 73 is pressed against the magnet pin F, and the lock bolt C is rotated as shown in FIGS. In FIG. 7A and FIG. 9, the lock bolt C is rotated about 45 °. As shown in FIG. 10, when the plate key G is pushed to the final pushing position, the lock bolt C is further rotated as shown in FIG. 7B.

  After the plate key G is pushed to the final pushing position, when the pushing force is loosened, the plate key G moves together with the slider D in the same direction as the plate key G with the urging force of the compression coil spring 53. Is done. Along with this movement, as shown in FIG. 7 (c), the inclined wall 94 of the through-hole 95 is hooked on the rectangular column portion 79 of the lock bolt C, and the lock bolt C is further rotated clockwise in FIG. 7 (c). Let Thereby, as shown in FIG.7 (d) and FIG. 11, the lock bolt C rotates 90 degrees. The lock bolt C is rotated 90 ° from the unlocking posture shown in FIG. 1 so that the lock rod 45 is arranged in a direction perpendicular to the longitudinal direction of the slit 47, and the lid body 7 is interposed via the lock rod 45. The case body 5 is locked.

  When the plate key G is completely removed, as shown in FIG. 11, the magnet E is moved by the biasing force of the compression spring 99, and the magnet E and the magnet pin F are attracted again with the same polarity, so that the magnet pin F is It will be retracted into the slider D. That is, if the plate key G is inserted and the magnet E is not moved, even if the slider D is moved due to vibration or impact, the magnet pin F and the lock bolt C do not interfere, and the lock bolt C is unlocked. It is not rotated to posture.

  According to the case locking device 100 described above, in the case locking device 100 that moves the slider D by inserting the plate key G and rotates the lock bolt C to the unlocking posture, it moves in the same direction as the insertion of the plate key G. When the plate key G is inserted, the same polarity of the moved magnet E is faced and arranged so as to protrude by a magnetic repulsive force, so that the lock bolt C is moved along with the movement of the slider D. Since the magnet pin F for rotating the magnet at a predetermined angle is provided in the slider D, when the plate key G is not inserted, the different polarity of the magnet E faces the magnet pin F, and the magnet pin F is arranged to be attracted to the lock bolt C. There is no interference. Therefore, even if vibration, impact, or the like is applied and the slider D is moved, the situation that the lock bolt C is rotated to the unlocking posture can be prevented. Further, even if a picking force is applied to improperly unlock the tumblers 55a to 55c by inserting a thin rod or the like while applying a pushing force to the slider D, the slider D moves idle without interfering with the lock bolt C. Only it does not lead to unlocking. 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.

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 the lock bolt shown in FIG. It is a perspective view of a slider and a plate key. It is a principal part plane sectional view of a locking device for cases. It is a principal part expanded sectional view of FIG. It is operation | movement explanatory drawing of the lock bolt which represented the non-movement state of the slider in (a), and represented the return start state of the slider in (b). It is operation | movement explanatory drawing which represented the rotation state of the lock bolt accompanying the movement of a slider by (a)-(d). It is operation | movement explanatory drawing of a plate key insertion state. It is operation | movement explanatory drawing of the plate key pushing start. It is operation | movement explanatory drawing of the press completion state of a plate key. It is operation | movement explanatory drawing in the state by which the plate key was extracted. It is a top view of the suitcase provided with the case locking device. It is a top view of the case locking device provided in the suitcase of FIG. 12 and its plate key.

Explanation of symbols

DESCRIPTION OF SYMBOLS 7 ... Cover body 5 ... Case main body 55a-55c ... Tumbler 100 ... Case locking device A ... Lock main body C ... Lock bolt D ... Slider E ... Magnet F ... Magnet pin G ... Key lock (plate key)

Claims (1)

A lock body fixed to a case body having an openable and closable lid, and a key is inserted;
A lock bolt that is rotatably provided in the lock body and repeats a lock posture and a lock release posture with respect to the lid body each time the lock body is rotated by a predetermined angle;
A slider that has a plurality of tumblers and is provided in the lock body, and can be moved in the insertion direction of the key by moving the tumbler only by inserting the key;
A magnet that is movably provided in the slider and is moved in the same direction by insertion of the key, and both ends of the moving direction have different polarities;
The slider is installed in the slider and is movable in the direction orthogonal to the movement trajectory of the magnet, and both ends of the moving direction are different polarities. A magnet pin that rotates the lock bolt by a predetermined angle in accordance with the movement of the slider by facing the same pole of the magnet that has been moved in the inserted state of the joint key and projecting by a magnetic repulsive force,
A case locking device characterized by comprising:

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