JP2014005608A - Locking device and cabinet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a locking device and a cabinet capable of preventing unlocking due to mischief or the like, and reducing costs by reducing the number of components or assembly man-hours.SOLUTION: A conversion mechanism for converting the linear movement of a slide member 51 into the rotary movement of a locking member 22 comprises: a protrusion disposed in one of the slide member 51 and the locking member 22, the protrusion protruding along a rotary shaft 23; and a guide section disposed in the other of the slide member and the locking member, the guide section allowing the immersion of the protrusion while allowing its relative movement to the protrusion. The guide section includes a displacement regulation section that extends from an initial position where the protrusion is disposed when the locking member is at a locking position toward the locking position side in the slide direction of the slide member.

Description

  The present invention relates to a locking device and a cabinet having the locking device.

2. Description of the Related Art Conventionally, a locking device including a so-called code lock that operates and inputs a code via a dial, a numeric keypad, or the like is known. Since this locking device can be unlocked without using a key, key management is not required, and it has gained popularity in that it can improve convenience when there are many users.
As the locking device, for example, in order to prevent leakage of code information to others, the dial is reset in conjunction with the opening operation of the door after the unlocking operation or the rotation operation of the operation knob or the like. A locking device incorporating a mechanism for returning to a non-input state has been proposed (see, for example, Patent Document 1).

  The locking device has a mechanism for elastically returning the operation knob from the open position to the closed position when the door is closed from the open state, and the door locking member is directly connected to the operation knob. Since the rotating shaft is shared, the locking member swings to the locking position when the operation knob returns to the closed position due to the door closing. Then, it is possible to prevent the locking member from rotating even if a force to the unlocking side is applied to the locking member due to mischief or the like by restricting the rotation of the operation knob at the time of locking. It has become.

JP 2010-281156 A

By the way, in addition to the locking device in which the above-described locking member is directly connected to the operation knob, for example, a slide member that can linearly reciprocate is provided, and the linear motion of the slide member is converted into the rotational motion of the locking member. Thus, there is a locking device that swings the locking member between the unlocking position and the locking position. As a method for converting such a linear movement of the slide member into a rotational movement of the locking member, for example, a protrusion is provided on one of the slide member and the locking member, and a guide portion for guiding the protrusion is provided on the other. It is conceivable to link the slide member and the locking member. However, in this case, when a force toward the unlocking position is applied to the locking member at the locking position, the sliding member may slide and the locking member may swing. Therefore, when the locking member is in the locking position, it is necessary to separately provide a mechanism for restricting the sliding of the sliding member, and there is a problem that the number of parts and the number of assembling steps increase, leading to an increase in cost.
The present invention has been made in view of the above circumstances, and provides a locking device and a cabinet that can prevent unlocking due to mischief and the like, and can reduce the number of parts and the number of assembling steps to reduce the cost. Is.

In order to solve the above problems, the present invention adopts the following configuration.
The locking device according to the present invention includes a slide member that can linearly reciprocate, a locking member that can swing between a locking position that locks the door and a locking release position that unlocks the door, and the slide. A conversion mechanism that converts linear movement of the member into rotational movement of the locking member, and the conversion mechanism is provided on one of the slide member and the locking member and is provided on a rotation shaft of the locking member. A projecting portion protruding along, and a guide portion that is provided on any one of the slide member and the locking member and allows the projecting portion to be immersed while allowing relative movement with respect to the projecting portion, The guide portion includes a displacement restricting portion that extends from an initial position where the protrusion is disposed when the locking member is in the locking position toward the locking position in the sliding direction of the slide member. .
With this configuration, when the locking member is in the locking position, the protrusion is disposed on the displacement restricting portion and the displacement is allowed only in the sliding direction. Even in the case of the action, it is possible to prevent the locking member from swinging.

Furthermore, the locking device according to the present invention is the above-mentioned locking device, wherein the locking member is configured to restrict the locking member from swinging from the unlocking position to the locking position side when the door is opened. The swing restricting means includes a trigger member that is displaceable between a restricting position that restricts the movement of the slide member and an allowable position that permits the movement of the slide member; and the trigger member on the restricting position side. And a pressing member that displaces the trigger member to an allowable position against the urging force of the trigger urging member when the door is closed.
With this configuration, when the door is opened, the trigger member is disposed at the restriction position, and the slide member is in a swing restriction state in which the slide member cannot be displaced from the unlocked slide position to the locked slide position. It is held in the unlocking position. Thereafter, when the door is closed, the trigger member is pressed by the pressing member and displaced to the allowable position, and the sliding of the sliding member is permitted. When the sliding member is displaced to the locking slide position, the trigger member is linked. The locked member swings from the unlocking position to the locking position.

Furthermore, the locking device according to the present invention is the above locking device, wherein either one of the trigger member and the slide member is provided with an engaging convex portion, and either of the trigger member or the slide member is provided. On the other hand, when the slide member is in the unlocked slide position, an engagement recess may be provided in which the engagement protrusion is immersed and engaged.
By configuring in this way, when the slide member is in the unlocked slide position, the engaging convex portion can be immersed in the engaging concave portion and the engaging convex portion and the engaging concave portion can be engaged. It is possible to restrict the slide member from sliding from the unlocked slide position.

The cabinet which concerns on this invention comprises the said locking device, It is characterized by the above-mentioned.
With this configuration, it is possible to prevent the door from being opened due to mischief or the like.

According to the locking device according to the present invention, it is possible to prevent unlocking due to mischief and the like, and it is possible to reduce the number of parts and the number of assembly steps, thereby reducing the cost.
Furthermore, according to the cabinet according to the present invention, it is possible to improve the reliability of a cabinet in which many users exist in an office or the like.

It is a perspective view of the cabinet in a first embodiment of the present invention. It is an expansion perspective view of the operation surface of the locking device in the first embodiment of the present invention. It is a perspective view of the locking system in a first embodiment of the present invention. It is a figure which shows the internal structure of the locking mechanism part of the said locking system in case an action | operation piece part exists in a locking position. It is a figure equivalent to FIG. 4 which shows the state which has an operation piece part between a locking position and an unlocking position. It is a figure equivalent to FIG. 4 which shows the state which has an operation piece part between a locking position and an unlocking position. It is a figure equivalent to FIG. 4 which shows the state which has an operation piece part in an unlocking position. It is the fragmentary sectional view which looked at the lock mechanism part in the state where the engagement convex part was arranged near the outside of the engagement concave part from the lower part. It is a fragmentary sectional view equivalent to FIG. 8 which shows the state immediately after an engagement convex part moved to the inner side of an engagement recessed part. FIG. 9 is a partial cross-sectional view corresponding to FIG. 8 showing a state immediately before the engaging convex portion is completely engaged with the engaging concave portion. It is a fragmentary sectional view equivalent to FIG. 8 which shows the state by which the engagement convex part was completely engaged with the engagement recessed part. It is a figure which shows the linkage structure of a slide member and a locking member when a locking member exists in a latching position. It is a figure equivalent to FIG. 12 which shows the state which has a locking member between a latching position and a latch release position. It is a figure equivalent to FIG. 12 which shows the state which has a locking member between a latching position and a latch release position. It is a figure equivalent to FIG. 12 which shows the state which has a locking member in a latch release position. It is a figure equivalent to FIG. 12 in 2nd embodiment of this invention. It is a figure equivalent to FIG. 14 in 2nd embodiment of this invention. It is a figure equivalent to FIG. 15 in 2nd embodiment of this invention.

Next, a locking device according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the locking device 1 according to this embodiment is attached to a cabinet 2. The cabinet 2 includes four storages 3, and doors 4 are swingably attached to the storages 3 via hinges h. These doors 4 are each provided with a code lock portion 5 constituting the locking device 1 at a substantially vertical center on the edge 4a side of the door 4, and an operation surface 6 of the code lock portion 5 is connected to the door 4. 4 is exposed on the outer surface side.

  As shown in FIG. 2, the operation surface 6 has a plurality of push buttons 10 each assigned with a number consisting of numbers “0” to “9” and “#”, and “C” (clear). A locking operation knob 11 that can be rotated between an unlocking (OPEN) position and a locking (LOCK) position is disposed below the push button 10.

  As shown in FIG. 3, most of the main part of the code lock portion 5 is accommodated in a casing 5 a disposed on the inner surface side of the door 4, and the rotary shaft 12 of the lock operation knob 11 described above is locked to the lock shaft 5. A sickle-shaped operating piece 13 that swings from the locking position (see FIG. 4) to the unlocking position (see FIG. 7) in conjunction with the operation knob 11 is fixed. The casing 5 a of the code lock portion 5 is accommodated in the casing 21 of the lock mechanism portion 20.

  An unlocking code confirmation unit 7 for confirming the unlocking code is provided on the surface of the casing 5 a opposite to the operation surface 6. The unlocking code confirmation unit 7 has a plurality of slits 8 respectively corresponding to the above-described push buttons 10 of “0” to “9” and “#”. Switch pieces (not shown) are arranged inside these slits 8, and an arbitrary unlocking code by a combination of “0” to “9” and “#” can be confirmed according to the positions of these switch pieces. ing.

  Here, when the push button 10 having the same combination as the unlocking code set by the unlocking code setting means (not shown) is pushed in and is in an immersive state, the locking operation knob is only put in the depressed state. 11 can be rotated from the locked position to the unlocked position. In other cases, for example, when the wrong combination of push buttons 10 is pushed, the rotation of the locking operation knob 11 from the locking position toward the unlocking position is restricted, and the operating piece 13 swings. It is supposed not to.

  When the push button 10 is pushed in, the code lock unit 5 holds the immersive state in which the push button 10 is immersed. That is, when the locking operation knob 11 is in the unlocking position, the push button 10 corresponding to the combination of unlocking codes is in an immersive state. When the lock operation knob 11 is returned from the unlocked position to the locked position, the code lock unit 5 returns all the push buttons 10 to the initial state that is not immersed (hereinafter simply referred to as the non-input state). It has become. Further, the code lock unit 5 is configured to return the push button 10 to the non-input state even when the clear “C” button for canceling the operation due to the wrong press is operated. Since the locking operation knob 11 is interlocked with the operating piece 13 as described above, the code locking portion 5 does not push the push button 10 even when the operating piece 13 is swung from the unlocked position to the locked position. Return to the input state.

  The actuating piece 13 mainly includes a tapered flat plate portion 15 and a substantially cylindrical protrusion that protrudes from the tip of the flat plate portion 15 along the rotation shaft 12 toward the side opposite to the operation surface 6. And a unit 16. The flat plate portion 15 extends so that the front and back surfaces thereof are substantially parallel to the operation surface 6, and is formed so as to bend toward the closed position toward the tip.

  The casing 5 a of the code lock unit 5 is accommodated in the box-shaped casing 21 of the lock mechanism unit 20 and fixedly attached to the inner surface side of the door 4. The casing 21 is formed with an opening K for exposing the unlocking code confirmation part 7 to the inside of the door 4, and the unlocking code confirmation part 7 can be seen through the opening K. Yes.

  The casing 21 of the lock mechanism unit 20 is fixed to the door 4 in the same manner as the casing 5a. Inside the casing 21, a locking member 22 is provided on the edge 4 a side of the door 4. The locking member 22 is attached so as to be swingable about a rotation shaft 23 extending inward and outward of the door 4. The locking member 22 includes an arm portion 24 that extends substantially radially outward from the rotating shaft 23, and a hook-like portion 25 formed at the tip of the arm portion 24.

  The locking member 22 is locked to a slit-like hole (not shown) formed in the opening edge of each storage case 3 to restrict the displacement of the door 4 in the opening / closing direction (see FIG. 4). , And can be displaced between the unlocking position (see FIG. 7) for releasing the locking. When the locking member 22 is disposed at the unlocking position, the arm portion 24 extends substantially vertically upward and the hook-shaped portion 25 extends in the horizontal direction, while the locking member 22 is disposed at the locking position. The arm portion 24 extends in a substantially horizontal direction and the hook-shaped portion 25 extends downward.

As shown in FIG. 4, the lock mechanism unit 20 includes an operating piece biasing portion 31 that constantly presses the operating piece portion 13 of the code lock portion 5 toward the unlocked position.
The operating piece urging portion 31 is slidable while being guided by a pair of wall portions 32 extending in a horizontal direction perpendicular to the rotation shaft 12 and the pair of wall portions 32 of the guide portion 33. A slide portion 34 and an elastic member 35 that urges the slide portion 34 to one side in the slide direction are provided. The elastic member 35 in this embodiment uses a tension coil spring. One end of the tension coil spring is locked to the casing 21, and the other end is locked to the slide portion 34.

  The slide part 34 is guided by the guide part 33, and has a substantially columnar shape protruding from the slide body part 36 in parallel with the pivot shaft 12 and toward the inside of the door 4 (the front side of the paper). The projecting portion 37 is integrally formed. The slide main body portion 36 is disposed inside the guide portion 33, while the protruding portion 37 is disposed so as to protrude from the guide portion 33. The projecting portion 37 includes a flat surface 37a along the wall portion 32, and a curved surface 37b that connects the flat surfaces 37a at both ends in the sliding direction and has a convex shape toward the outside. Further, at the edge of the pair of wall portions 32 of the guide portion 33, a retaining portion 38 that extends in the sliding direction and protrudes in a direction close to each other is provided so that the slide main body portion 36 is not detached from the guide portion 33. ing.

  The protrusion 37 always contacts the operating piece 13 when the operating piece 13 is displaced between the unlocking position and the locking position. More specifically, when the operating piece 13 is in the locked position, the protrusion 37 contacts the tip of the operating piece 13 (see FIG. 4), and the operating piece 13 is displaced to the unlocked position. As the contact position moves to the base side of the operating piece 13 and the operating piece 13 reaches the unlocked position, it comes into contact at an intermediate position between the distal end and the base of the operating piece 13 (FIG. 7). Reference).

  The elastic member 35 urges the slide portion 34 in the slide direction in which the operating piece 13 is in the locked position. That is, when the locking operation knob 11 is operated and the operating piece 13 swings from the locked position to the unlocked position, the protruding portion 37 is pressed by the operating piece 13 and the slide portion 34 is shown in FIG. 7 from the initial position. Slide to position. Thereafter, when there is no operation input to the locking operation knob 11, the slide portion 34 slides to the initial position by the elastic force of the elastic member 35, and at this time, the operating piece portion 13 is pressed by the protruding portion 37 of the slide portion 34. Thus, the operating piece 13 is swung from the unlocked position to the locked position.

  The lock mechanism unit 20 further includes a rotating unit 40 that rotates according to the position of the protruding portion 37. The rotating portion 40 includes a rotating shaft 41 parallel to the rotating shaft 12 and three arm portions 42 to 44 connected to the rotating shaft 41 and arranged in a substantially Y shape. The rotation shaft 41 is disposed below the slide portion 34 and is rotatably supported by a bearing portion (not shown) formed in the casing 21.

  The arm portions 42 to 44 are formed in a flat plate shape substantially parallel to the flat plate portion 15 of the operating piece portion 13, and are arranged between the operating piece portion 13 and the slide portion 34 in the inner and outer directions of the door 4. . The arm portion 42 extends obliquely upward from the rotation shaft 41 when the slide portion 34 is disposed at the initial position, and an upper edge thereof is disposed immediately below the projecting portion 37. On the other hand, the arm portion 43 extends substantially vertically upward and reaches slightly above the guide portion 33 when the slide portion 34 is disposed at the initial position. These arm portions 42 and 43 are formed with tapered tips, and when the projecting portion 37 slides from one side to the other and between the other arm portions 42 and 43, A recess 46 having a pair of butting portions 45 that abut each other is formed.

  The arm portion 44 extends substantially vertically downward when the slide portion 34 is disposed at the initial position, and has a substantially columnar columnar portion 47 that extends toward both sides in the extending direction of the rotation shaft 41 at its end. Is formed. The arm part 44 is disposed on an extension line of the arm part 43.

  By forming the rotating part 40 as described above, for example, when the slide part 34 is disposed at the initial position, as shown in FIG. 4, the arm part 43 is moved substantially vertically upward. When the slide portion 34 slides against the elastic force of the elastic member 35 from the initial position, the protrusion portion 37 abuts against the abutment portion 45 on the arm portion 43 side (see FIG. 5). Then, when the abutting portion 45 is pressed by the projecting portion 37, the rotating portion 40 rotates counterclockwise from the first swing position (see FIG. 6), and the arm portion 42 faces substantially vertically upward. Two swing positions are reached (see FIG. 7). Although illustration is omitted, when the rotating portion 40 returns from the second swing position to the first swing position, the projecting portion 37 is abutting portion 45 on the arm portion 42 side by the elastic force of the elastic member 35. The rotating part 40 is rotated by pressing.

  As shown in FIG. 4, a locking member urging portion 50 is disposed between the arm portion 44 of the rotating portion 40 and the side wall 21 a of the casing 21. The locking member urging unit 50 urges the locking member 22 toward the closed position, and includes a slide member 51 linked to the locking member 22 and a slide urging member 52 that urges the slide member 51. I have. The slide member 51 can be pressed toward the side wall 21 a by the arm portion 44, more specifically, the columnar portion 47 of the arm portion 44.

  The slide member 51 of the locking member urging portion 50 is parallel to the slide portion 34 of the operating piece urging portion 31 described above between the locking slide position (see FIG. 4) and the unlocking slide position (see FIG. 7). It can slide (reciprocate) linearly in the same direction. The slide member 51 is urged by the slide urging member 52 in the direction opposite to the operating piece urging portion 31 (left side in FIG. 4). The slide urging member 52 of this embodiment uses a compression coil spring, one end of this compression coil spring is supported by the side wall 21a of the casing 21, and the other end is the bottom wall 53a of the recess 53 of the slide member 51. It is locked to.

  The slide member 51 of the locking member urging portion 50 includes a protrusion 55 that protrudes from the side wall 54 to the side (front side in the front and back direction of the paper surface). On the other hand, the locking member 22 includes a guide portion 56 that guides the protrusion 55 while the protrusion 55 is immersed therein. The projecting portion 55 and the guide portion 56 constitute a conversion mechanism that converts linear motion of the slide member 51 into rotational motion of the locking member. The guide portion 56 in this embodiment is formed so as to penetrate the locking member 22, but may be a groove shape as long as the protrusion 55 can be immersed. As described above, the protrusion 55 of the slide member 51 is linked to the guide portion 56 of the locking member 22, so that the linear motion of the slide member 51 is converted into the rotational motion of the locking member 22. The details of the relative displacement between the protrusion 55 and the guide portion 56 will be described later.

  Referring to FIGS. 8 to 11 together, the lock mechanism unit 20 is a swing restricting unit that restricts the locking member 22 from swinging from the unlocked position to the locked position when the door 4 is opened. 60. The swing restricting portion 60 includes a trigger member 61 that is displaceable between a restricting position (see FIG. 11) that restricts sliding of the slide member 51 and an allowable position (see FIG. 8) that allows the slide member 51 to slide. The trigger urging member 62 that urges the trigger member 61 toward the restriction position side, and the trigger urging member 62 that is provided at the opening periphery of the cabinet 2 against the urging force of the trigger urging member 62 when the door 4 is closed. And a pressing member 63 that is displaced to an allowable position.

  The trigger member 61 is formed with an engaging convex portion 64 that protrudes toward the locking member 22 on the inner side of the side wall 21 a of the casing 21. On the other hand, the slide member 51 is formed with an engagement recess 57 into which the engagement protrusion 64 is inserted and engaged when the slide member 51 is in the unlocked slide position.

  The engaging recess 57 is disposed on the side of the side wall 21 a from the center in the sliding direction on the lower surface of the slide member 51. The slide member 51 is formed with an inclined surface 59 that is inclined downward from the wall portion 58 on the side wall 21 a side of the engaging recess 57 toward the lower side of the engaging recess 57. A curved surface C1 that is convex downward is formed in between.

  On the other hand, the engaging convex portion 64 of the trigger member 61 is formed with an inclined surface 65 inclined at substantially the same angle as the inclined surface 59 on the end side, and is inclined in the sliding direction of the slide member 51. On the opposite side of 65, an inclined surface 66 is formed which is inclined downward on the side wall 21a side. The inclined surface 65 and the inclined surface 66 are arranged at a substantially central position of the engaging convex portion 64 and are connected via a curved surface C2 that is convex upward. That is, the engaging convex portion 64 is formed to be gradually reduced in width upward as viewed from the side.

  Referring also to FIG. 7, the trigger member 61 is disposed so as to protrude from the side wall 21 a of the casing 21. The side wall 21 a is formed with a guide portion 21 b that covers the trigger member 61 projecting from the side wall 21 a and guides the door 4 so as to be slidable in and out of the door 4. The guide portion 21 b is opened toward the inside of the door 4, and the receiving surface 61 a of the trigger member 61 facing the inside of the door 4 is exposed to the outside of the casing 21 through the opening.

  The trigger urging member 62 in this embodiment is a compression coil spring and constantly urges the trigger member 61 toward the restriction position shown in FIG.

  On the other hand, the pressing member 63 provided on the opening periphery of the cabinet 2 is disposed on the displacement locus of the receiving surface 61a when the door 4 is opened and closed, and has a predetermined end surface outline smaller than the opening size of the guide portion 21b. It is formed in a columnar shape or a cylindrical shape. Here, the predetermined length of the pressing member 63 is that the upper end of the curved surface C2 of the engaging convex portion 64 is the curved surface C1 of the engaging concave portion 57 when the door 4 is closed and the pressing member 63 presses the receiving surface 61a. It is the length arrange | positioned slightly inside the door 4 (regulation position side) rather than the lower end of (refer FIG. 8, FIG. 9).

  The locking mechanism 20 is further provided with a tapered latch 80 that protrudes toward the opening edge of the cabinet 2 below the locking member 22. The latch portion 80 has the same configuration as a latch mechanism provided in a so-called general door, and is biased in a protruding direction by a coil spring 81 and can be immersed by an operating force when the door 4 is opened and closed.

Next, the engaging operation between the engaging convex portion 64 and the engaging concave portion 57 will be described.
First, as shown in FIG. 8, when the locking member 22 is in the locking position with the door 4 closed, the slide member 51 is arranged at the locking slide position (indicated by a two-dot chain line in FIG. 8). The
Next, when the slide member 51 is displaced toward the unlocking slide position, the locking member 22 starts swinging toward the unlocking position. Then, at a predetermined slide position, the portion near the curved surface C1 of the inclined surface 59 abuts on the portion near the curved surface C2 of the inclined surface 65 of the engaging convex portion 64 (shown by a solid line in FIG. 8).

  Further, when the slide member 51 is slid to the unlocking slide position side, the inclined surface 65 of the engagement convex portion 64 is pressed by the inclined surface 59, the pressing member 63 is compressed and deformed, and the trigger member 61 is gradually moved to the allowable position side. It is displaced to. As a result, as shown in FIG. 9, the curved surface C <b> 1 of the slide member 51 can be displaced to the unlocking slide position side of the curved surface C <b> 2 of the trigger member 61.

  As shown in FIG. 10, when the slide member 51 is further slid to the unlocking slide position side, the curved surface C1 slides on the inclined surface 66 of the engagement convex portion 64, and the trigger member 61 gradually moves to the regulation position side. Is displaced. Then, as shown in FIG. 11, when the slide member 51 is in the unlocked slide position, the engaging convex portion 64 is immersed in the engaging concave portion 57, and the engaging convex portion 64 is substantially perpendicular to the sliding direction. As long as the side surface and the side surface of the engagement recess 57 abut against each other and the trigger member 61 is not displaced to the allowable position side against the urging force of the trigger urging member 62, the slide of the slide member 51 to the locking slide position side is prevented. It will be regulated.

Next, the linkage structure between the slide member 51 and the locking member 22 described above will be described with reference to the drawings.
As shown in FIG. 12A, the locking member 22 includes a bulging portion 26 that bulges in the same direction as the extending direction of the hook-shaped portion 25 on the base side supported by the rotating shaft 23. . The bulging portion 26 is centered on the vicinity of the intersection of the side portions 26a and 26b, the side portion 26a substantially parallel to the straight side portion 25a of the flange-like portion 25, the side portion 26b substantially parallel to the arm portion 24, and the like. And a chamfered portion 26d formed so as to obliquely cut out the connecting portion between the side portion 26b and the arc portion 26c. And the guide part 56 mentioned above is formed in the bulging part 26 of the locking member 22 between the corner | angular part 26e of the chamfering part 26d and the edge part 26b, and the rotating shaft 23. As shown in FIG.

  As shown in FIG. 12 (b), the guide portion 56 has a long hole portion 56a formed in a length extending in a radial direction from the axial center of the rotation shaft 23, and an end on the radially outer side of the long hole portion 56a. Displacement restricting portion 56b extending from the portion to the slide direction of slide member 51, more specifically, to the side opposite to flange 25 in the slide direction. The connecting portion C between the long hole portion 56a and the displacement restricting portion 56b has a corner portion 56c where substantially linear inner edges intersect with each other, and a bending portion that is arranged to face the corner portion 56c and curves in a concave shape. 56d is formed. Further, the displacement regulating portion 56b is formed with a curved portion 56e that is curved in a concave shape at the corner portion on the curved portion 56d side.

  By forming the guide portion 56 in this way, when the slide member 51 is displaced from the lock slide position (see FIG. 12A) to the unlock slide position side (right side in FIG. 12A), The protrusion 55 is displaced in the sliding direction. When the center O of the projecting portion 55 (see FIG. 12B) moves to the long hole portion 56a side beyond the connecting portion C, the inner edge of the long hole portion 56a is pressed by the projecting portion 55, and the force caused by this pressing. Acts in the swinging direction of the locking member 22, and the locking member 22 starts to be displaced from the locking position to the locking release position. Then, as shown in FIG. 13, when the slide member 51 is further slid toward the unlocking slide position, the projecting portion 55 is relatively moved toward the rotating shaft 23 in the guide portion 56, and thereafter, FIGS. As shown in FIG. 5, when the protrusion 55 moves relative to the connection portion C in the guide portion 56 and the slide member 51 reaches the unlocking slide position, the center O of the protrusion 55 is near the connection portion C. In addition, it is arranged closer to the long hole portion 56a than the connection portion C.

  When the slide member 51 returns from the unlocked slide position to the locked slide position, the protrusion 55 displaces the inside of the guide portion 56 in the reverse order to the above-described displacement, and the slide member 51 is displaced to the locked slide position. . And the protrusion 55 will move from the long hole part 56a into the displacement control part 56b.

  Here, when the protrusion 55 is disposed on the displacement restricting portion 56b, more specifically, when the center O of the protrusion 55 is disposed closer to the displacement restricting portion 56b than the connecting portion C, it may be caused by mischief or the like. Even if a force in the unlocking direction is applied to the locking member 22, the inner edge of the displacement restricting portion 56b only presses the protrusion 55 in the vertical direction perpendicular to the sliding direction, and the sliding member 51 moves in the sliding direction. Since they cannot be displaced vertically in the vertical direction, the displacement of the locking member 22 from the locking position to the locking release position is restricted.

The locking device 1 of this embodiment has the above-described configuration. Next, a series of operations from unlocking to locking of the locking device 1 described above will be described.
First, a preset unlocking code is input by pressing the push button 10, and the locking operation knob 11 is moved from the locking position (shown by a solid line in FIG. 2) to the unlocking position (shown by a two-dotted line in FIG. 2). ).

  By the turning operation of the locking operation knob 11, the operating piece 13 is swung from the locking position (see FIG. 4) to the unlocking position (see FIG. 7). By the swinging of the operating piece 13, the locked state shown in FIG. 4 is changed to the state shown in FIG. Specifically, the projecting portion 37 is pressed by the flat plate portion 15 of the operating piece portion 13, and the slide portion 34 is displaced in a direction of pulling the elastic member 35 that is a tension coil spring. As the slide part 34 is displaced, the projecting part 37 presses the abutting part 45 of the arm part 43 of the rotating part 40. Then, the rotating portion 40 rotates and the slide member 51 of the locking member urging portion 50 is compressed by the arm portion 44 from the locking slide position to the unlocking slide position while compressing the slide urging member 52 that is a compression coil spring. Slide.

  At this time, as shown in FIGS. 5 and 6, the protrusion 55 is displaced from the displacement restricting portion 56 b to the long hole portion 56 a in the guide portion 56, and the protrusion 55 presses the inner surface of the guide portion 56. The linear movement of the slide member 51 is converted into the rotational movement of the locking member 22.

  Then, when the slide member 51 is slid to the predetermined position shown in FIG. 9, the curved surface C1 of the slide member 51 is displaced to the unlocking slide position side with respect to the curved surface C2 of the trigger member 61, and the locking slide position of the slide member 51 is reached. The movement to the side is restricted.

  Next, when there is no operation input such as when the user removes his / her hand from the locking operation knob, the slide main body 36 is returned to the initial position by the elastic member 35. At this time, the operating piece 13 is pressed by the protrusion 37, and the operating piece 13 is swung to the locking position. Thereby, the unlocking code of the code lock part 5 is reset.

  Normally, the door 4 is opened in order to load / unload the luggage in this state. Then, the pressing of the trigger member 61 by the pressing member 63 is released, and the engaging convex portion 64 is displaced into the engaging concave portion 57 as shown in FIGS. Will be completely regulated. That is, the locking member 22 is held at the unlocked position.

  On the other hand, when the loading / unloading of the luggage is completed and the door 4 is closed, the pressing member 63 presses the trigger member 61 and the trigger member 61 is displaced to the allowable position. Then, the slide member 51 slides to the locking slide position side, and the curved surface C1 is displaced from the curved surface C2 to the locking slide position side as shown in FIG. More specifically, when the slide member 51 slides toward the locking slide position, the curved surface C1 presses the curved surface C2, the trigger member 61 is slightly displaced toward the allowable position, and the curved surface C1 is locked more than the curved surface C2. It will be displaced to the slide position side.

  As a result, the slide member 51 is displaced to the locking slide position, whereby the locking member 22 is swung to the locking position, and the door 4 is locked.

  Therefore, according to the locking device 1 of the above-described embodiment, when the locking member 22 is in the locked position, the protrusion 55 is disposed on the displacement restricting portion 56b and the displacement is allowed only in the sliding direction. Therefore, even when a force in a swinging direction is applied to the locking member 22, it is possible to prevent the locking member 22 from swinging. As a result, it is possible to reduce costs by reducing the number of parts and the number of assembly steps while preventing unlocking due to mischief and the like.

  Further, when the door 4 is opened, the trigger member 61 is arranged at the restriction position, and the slide member 51 is in a swing restriction state in which the slide member 51 cannot be displaced from the unlocking slide position to the locking slide position, and the locking member 22 is locked. It can be held in the release position. Thereafter, when the door 4 is closed, the trigger member 61 is pressed by the pressing member 63 and displaced to the allowable position, the sliding of the slide member 51 is permitted, and the slide member 51 is displaced to the locking slide position. The locking member 22 linked to the slide member 51 can be swung from the locking release position to the locking position. As a result, the door 4 can be easily locked.

  Further, when the slide member 51 is in the unlocked slide position, the engagement convex portion 64 can be immersed in the engagement concave portion 57 and the engagement convex portion 64 and the engagement concave portion 57 can be engaged. The member 51 can be restricted from sliding from the unlocked slide position. Therefore, it is possible to prevent the locking member 22 from unintentionally swinging toward the locking position.

  Next, the locking device in 2nd embodiment of this invention is demonstrated, referring drawings. The locking device according to the second embodiment is different from the locking device 1 according to the first embodiment described above only in the structure in which the locking member 22 and the slide member 51 are linked. The same reference numerals are given to the same parts as the embodiment for explanation.

  As shown in FIG. 16, the locking member 22 includes a protrusion 155 that protrudes from the bulging portion 26 to the slide member 51 side (the back side in the paper front and back direction). On the other hand, the slide member 51 is formed with a groove-shaped guide portion 156 into which the protrusion 155 is immersed and guides the protrusion 55. Thereby, the protrusion 55 of the locking member 22 is linked to the guide portion 156 of the slide member 51, and the linear motion of the slide member 51 is converted into the rotational motion of the locking member 22. The guide portion 156 may be a hole that penetrates the slide member 51.

  The guide portion 156 includes a long hole portion 156a extending in a direction orthogonal to the sliding direction of the rotation shaft 23 and the slide member 51, and a slide direction of the slide member 51, more specifically, from an upper end portion of the long hole portion 156a. Includes a displacement restricting portion 156b extending toward the unlocking slide position. The connecting portion C between the elongated hole portion 156a and the displacement restricting portion 156b has a corner portion 156c where the substantially linear inner edges intersect with each other, and a curved portion that is disposed opposite to the corner portion 156c and curves in a concave shape. 156d is formed.

  For example, when the slide member 51 is displaced from the locked slide position (see FIG. 16) to the unlocked slide position side (see FIG. 18), the guide portion 156 is displaced in the slide direction of the slide member 51, and the protrusion 155, Specifically, the center of the protrusion 155 moves relative to the slot 156a side from the displacement restricting portion 156b. Then, the inner edge of the elongated hole portion 156a is pressed by the protrusion 55, and the force by this pressing acts in the swinging direction of the locking member 22, and the locking member 22 starts to be displaced from the locked position to the unlocked position. To do. Then, as shown in FIG. 17, when the slide member 51 is further slid to the unlocked position side, the protrusion 155 is relatively moved in the guide portion 156 in the direction away from the rotation shaft 23, and thereafter, as shown in FIG. As shown, when the protrusion 155 moves relative to the connection part C side in the guide part 156 and the slide member 51 reaches the unlocking slide position, the center of the protrusion 55 is near the connection part C, and It will be in the state arrange | positioned rather than the connection part C at the long hole part 56a side.

  On the other hand, when the slide member 51 returns from the unlocked slide position to the locked slide position, the protrusion 55 displaces the interior of the guide portion 56 from the locked position to the unlocked position. Are displaced in the reverse order, and the slide member 51 is displaced to the locked slide position. And the protrusion 155 will move from the long hole part 156a into the displacement control part 156b.

  Therefore, according to the locking device of the second embodiment described above, even when the guide member 156 is provided on the slide member 51 and the protrusion 155 is provided on the locking member 22, the linear movement of the slide member 51 is locked. The rotation of the member 22 can be converted, and when the locking member 22 is in the locking position, the protrusion 155 is disposed in the displacement restricting portion 156b, so that the locking member 22 swings from the locking position. Can be prevented from being unlocked.

The present invention is not limited to the configuration of each of the above-described embodiments, and the design can be changed without departing from the gist thereof.
For example, in the case of the locking device in each embodiment described above, the case where the protrusion 16 is formed on the operating piece 13 has been described as an example, but the operating piece 13 that does not include the protrusion 16 may be used.

  Furthermore, in the locking device of each embodiment mentioned above, although the case where a coil spring was each used as an elastic member was demonstrated, if it is an elastic body which can urge the slide part 34, the slide member 51, and the trigger member 61, Each is not limited to a coil spring.

  Moreover, although the locking device of each embodiment mentioned above demonstrated an example provided with the action piece biasing part 31 which urges the action piece part 13, you may abbreviate | omit the action piece biasing part 31. That is, the operating piece portion 13 can be swung between the locking position and the unlocking position only by an operation input to the locking operation knob 11, and the rotating portion 40 is rotated by the operating piece portion 13. Also good. In this case, immediately after opening the door 4, the user turns the locking operation knob 11 to the locking operation position.

  Furthermore, although the locking device of each embodiment mentioned above demonstrated the example which provided the engagement recessed part 57 in the slide member 51, and provided the engagement convex part 64 in the trigger member 61, provided the engagement convex part in the slide member 51. The trigger recess 61 may be provided with an engagement recess.

  Furthermore, although the locking device of each embodiment mentioned above demonstrated the case where the inclined surface 65 was provided in the slide member 51 and the inclined surface 66 was provided in the trigger member 61 as a 1st inclined surface, the inclined surface 65 and the inclined surface 66 are demonstrated. And at least one of them may be provided as the first inclined surface.

  Moreover, in each embodiment mentioned above, although the case where the locking device 1 was attached to the cabinet 2 was demonstrated, you may apply as a locking device of doors other than the cabinet 2, and about the case where it combines with the code | symbol lock part 5. Although it demonstrated, it is not restricted to this structure, For example, it can utilize also as a locking device which rocks | locks the locking member 22 by a user operating the slide members 51 and 151, and locks doors, such as a toilet.

51 Slide member 22 Locking member 55 Protruding portion 56, 156 Guide portion 56b Displacement restricting portion 57 Engaging recess 60 Swing restricting portion (swing restricting means)
61 Trigger member 62 Trigger urging member 63 Press member 64 Engaging convex portion 65 Inclined surface (first inclined surface)
66 Inclined surface (first inclined surface)
67 Inclined surface (second inclined surface)

Claims (5)

A linearly reciprocable slide member;
A locking member swingable between a locking position for locking the door and a locking release position for unlocking the door;
A conversion mechanism that converts linear movement of the slide member into rotational movement of the locking member,
The conversion mechanism is
A protrusion that is provided on one of the slide member and the locking member and protrudes along the rotation axis of the locking member;
A guide portion that is provided on any one of the slide member and the locking member and allows the protrusion to be immersed while allowing relative movement with respect to the protrusion.
The guide portion is
A locking device comprising: a displacement restricting portion extending from an initial position where the protrusion is disposed when the locking member is in the locking position toward a locking position in the sliding direction of the slide member. A swing restricting means for restricting swinging of the locking member from the unlocking position to the locking position side when the door is opened;
The swing restricting means is
A trigger member displaceable between a restriction position for restricting movement of the slide member and an allowable position for allowing movement of the slide member;
A trigger urging member that urges the trigger member toward the restriction position;
The locking device according to claim 1, further comprising: a pressing member that displaces the trigger member to an allowable position against the biasing force of the trigger biasing member when the door is closed.   Either one of the trigger member and the slide member is provided with an engaging projection, while the other slide member is in the unlocked slide position on the other of the trigger member and the slide member. The locking device according to claim 2, wherein an engagement recess is provided in which the engagement projection is immersed and engaged. At least one of the slide member and the trigger member is provided with a first inclined surface that gradually displaces the trigger member to the allowable position side as the slide member slides from the locked slide position to the unlocked slide position. And
The engagement convex portion is provided with a second inclined surface that gradually displaces the trigger member toward the regulation position when the slide member is displaced toward the unlocking slide position from a predetermined slide position. The locking device according to claim 3.   A cabinet comprising the locking device according to any one of claims 1 to 4.

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