JP5995425B2 - Locking device and cabinet - Google Patents

Description

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

  2. Description of the Related Art Conventionally, in a cabinet that is installed in an office or the like and stores various articles, there is known one provided with a locking device that restricts the opening of a door in order to safely store the stored articles. As a locking device, there is a device equipped with a so-called code lock that operates and inputs a code via a dial, a numeric keypad, etc., and can be unlocked without using a key by using a lock device equipped with such a code lock. For this reason, key management is not required, and it has gained popularity in that it can improve convenience when there are many users.

However, in the case of a dial-type code lock, the state where the codes are arranged is maintained even after the door is opened, or in the case of the numeric keypad-type lock, the state where the push button is immersed is maintained even after the door is opened. In some cases, a combination of codes that can be unlocked may be stolen by others.
Therefore, in recent years, in order to prevent leakage of code information to others, the dial and numeric keypad are reset to the non-input state in conjunction with the opening operation of the door after the unlocking operation and the turning operation of the operation knob etc. A locking device incorporating a returning mechanism has been proposed (see, for example, Patent Documents 1 to 4).

JP 2010-281156 A JP 2010-248840 A JP 2010-248839 A Japanese Patent Publication No. 06-060544

However, in the case of the above-described conventional locking device, since a mechanism for preventing the code from being seen is added to the code lock itself, the code lock device configuration is complicated, and the code lock processing man-hours and assembly man-hours increase. However, there is a problem that the cost increases.
The present invention has been made in view of the above circumstances, and a locking device and a cabinet capable of preventing a code from being seen while suppressing an increase in cost due to a complicated configuration of the code lock. Is to provide.

In order to solve the above problems, the present invention adopts the following configuration.
The locking device according to the present invention includes a locking operation unit that is displaceable between a locking operation position and an unlocking operation position, and an operation that is displaceable between the locking position and the unlocking position in conjunction with the locking operation unit. One part, the code can be input, the input code and a preset unlocking code are collated, and if the code does not match the unlocking code, the locking operation unit is When it is held at the locking position and the input code matches the unlocking code, the locking operation unit is released from holding at the locking position and can be displaced to the unlocking position. When the part is displaced from the unlocked position to the locked position, the code lock part that resets the input code to the non-input state and the opening edge of the cabinet are locked in the opening and closing direction of the cabinet . Locking position for restricting displacement and unlocking position for releasing the lock A locking member that is displaceable between the locking position and the unlocking position in conjunction with the operating piece when the operating piece is displaced from the locked position to the unlocked position; An operating piece portion urging means for constantly urging the operating piece portion toward the locking position; and a return means for returning the lock member from the locking release position to the locking position when the door is closed. And a locking mechanism.
With this configuration, for example, when the locked door is unlocked and opened, the unlocking code is input to the locking portion to displace the locking operation portion from the closing operation position to the unlocking operation position. Then, the operating piece is displaced from the locked position to the unlocked position, and with this displacement, the locked state by the lock member is released and the door can be opened. Then, when there is no operation input such as the user releasing his / her hand from the locking operation part, the operating piece part is returned to the closed position by the operating piece part biasing means, and the locking operation is interlocked with the displacement of the operating piece part. The part is returned to the locking operation position. Therefore, at the time when there is no operation input to the locking operation unit, it is possible to immediately reset the input code by returning the operating piece part to the closed position by the operating piece part biasing means, to the non-input state, It is possible to prevent the unlocked code from being stolen while suppressing the increase in cost due to the complicated configuration of the code lock unit.
Further, when the operating piece is displaced to the closed position and the code is reset to the non-input state, the timing at which the lock member returns to the locking position is delayed, and the door is moved to the closed position. Since the lock member can be returned to the locked position, the door can be locked without any special operation by the user.

Furthermore, the locking device according to the present invention is the above locking device, wherein the return means includes a locking member urging means for urging the locking member toward the locking position, and the lock when the door is open. A rocking restriction mechanism that holds the rocking member that is urged by the member urging means in a rocking restriction state that restricts the rocking member, and that releases the rocking restriction state when the door is closed. May be provided.
With this configuration, when the door is open, the lock member urged by the lock member urging means is in a swing restriction state in which the lock member is not swung, and the door is closed in this swing restriction state. Can be canceled when For this reason, even after the code is reset to the non-input state, the lock member can be held at the unlocking position and the lock member can be displaced to the locking position at the timing when the door is closed. Therefore, since the return means can be configured with a simple configuration, an increase in the number of parts and an increase in the number of assembly steps can be suppressed.

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 improve the convenience of a cabinet in which many users exist in an office or the like.

According to the locking device and cabinet according to the present invention, by adding a lock mechanism to an existing code lock, the operating piece 13 is returned to the lock position immediately after the unlocking operation by code verification is completed, and the code is Since it can be reset to a non-input state, the code entered when the door is opened and items in and out of the cabinet are opened and closed while suppressing the cost increase due to the complexity of the structure of the code lock Can be prevented from being seen.
Furthermore, the convenience of a cabinet having many users in an office or the like can be improved.

It is a perspective view of the cabinet in the embodiment of the present invention. It is an expansion perspective view of the operation surface of the code lock main-body part in embodiment of this invention. It is a perspective view of the locking device in the embodiment of the present invention. It is a fragmentary sectional view of the above-mentioned locking device in case an operation piece part is an unlocking position. FIG. 5 is a partial cross-sectional view corresponding to FIG. 4 in which the operating piece portion is locked. It is the side view seen from the A direction of FIG. It is the side view seen from the B direction of FIG. It is the fragmentary sectional view which looked at the locking mechanism part in case an operation piece part is a locking position from the upper part. FIG. 9 is a cross-sectional view corresponding to FIG. 8 when the operating piece is in the unlocked position. FIG. 9 is a cross-sectional view corresponding to FIG. 8 when the operating piece is in the locking position and the lock member is in the locking release position. It is sectional drawing equivalent to FIG. 8 in the modification of 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 cabinet 2 to which the locking device 1 according to this embodiment is attached includes four storages 3, and doors 4 are respectively connected to these storages 3 via hinges h. It is supported so that it can swing. These doors 4 are each provided with a code lock main body 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 main body 5 is a door. 4 is exposed to 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 is rotatable from an unlocking (OPEN) position to a locking (Lock) position is disposed below the push button 10.

  As shown in FIGS. 3 and 4, the main part of the code lock main body 5 is housed in a casing disposed on the inner surface side of the door 4, and the rotation shaft of the locking operation knob 11 described above. 12, a sickle-shaped operating piece 13 is fixed that swings from the unlocking position to the locking position in conjunction with the locking operation knob 11.

  Here, in the code lock main body 5, a combination of a predetermined number and “#” can be set in advance as an unlock code, and a push button 10 having the same combination as the preset unlock code is provided. When the push button 10 is depressed and depressed, the locking operation knob 11 can be rotated from the locked position to the unlocked position only while the push button 10 is depressed. In other cases, for example, when the wrong combination of the 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 does not swing. It is like that.

  When the push button 10 is pushed in, the code lock main body 5 holds the depressed state in which the push button 10 is depressed. When the locking operation knob 11 is in the unlocked position, The preset combination of push buttons 10 is in an immersive state. When the lock operation knob 11 is returned from the unlocked position to the locked position, the code lock main body 5 is in an initial state in which all the push buttons 10 are not immersed (hereinafter simply referred to as an uninput state). Return to. Further, the code lock body 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, even when the operating piece 13 is swung from the unlocked position to the locked position, the push button 10 is It will return to the non-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 front and rear surfaces of the flat plate portion 15 extend substantially parallel to the operation surface 6, and are curved toward the closed position toward the distal end.

A lock mechanism portion 20 is fixedly attached to the inner surface side of the door 4 below the code lock main body portion 5 described above.
The lock mechanism 20 has a box-shaped casing 21, and a lock member 22 is provided in the casing 21 on the side of the edge 4 a of the door 4. The lock member 22 is swingably attached around a rotation shaft 23 extending inward and outward of the door 4, an arm portion 24 extending substantially radially outward from the rotation shaft 23, and a tip of the arm portion 24. And a hook-like portion 25 formed by bending. The arm portion 24 extends toward the outside of the casing 21, and the hook-like portion 25 is always disposed outside the casing 21.

  The locking member 22 is locked to a slit-like hole (not shown) formed at the opening edge of each storage 3 and a locking position (see FIG. 5) that restricts the displacement of the door 4 in the opening / closing direction. , And can be displaced between the lock release position (see FIG. 4) for releasing the lock. When the lock member 22 is in the locking release position, the arm portion 24 extends substantially vertically upward, while in the locking position, the arm portion 24 extends in the substantially horizontal direction. The casing 21 is provided with a cover member 26 that covers the hook-like portion 25 of the lock member 22 in the unlocking position in order to prevent dust and the like from entering.

  Referring also to FIG. 6, the lock member 22 is provided with an extending portion 27 on the side opposite to the arm portion 24 when viewed from the rotation shaft 23. The extending portion 27 is bent from the base portion of the arm portion 24 supported by the rotating shaft 23 to the door 4 side along the rotating shaft 23, and the lock member 22 is set to the locking position. In some cases (see FIG. 5), the arm portion 24 is formed to extend in an upward direction substantially perpendicular to the extending direction. The extension portion 27 is pressed from the arm portion 24 side by the protrusion 16 of the operating piece portion 13 when the operating piece portion 13 is swung from the locking position (see FIG. 5) to the unlocked position (see FIG. 4). The locking member 22 is swung from the locking position (see FIG. 5) to the locking releasing position (see FIG. 4) by the pressing of the extending portion 27 by the protrusion 16.

  As shown in FIGS. 4 and 5, the lock mechanism portion 20 is provided with an operating piece urging mechanism portion 30 that constantly urges the operating piece portion 13 toward the lock position. The operating piece portion urging mechanism 30 is disposed in the vicinity of the upper side of the casing 21, and is slidably attached to the guide 31 formed along the upper side of the casing 21 and along the door 4. And a coil spring 33 that constantly urges the slide piece 32 from the base side of the door 4 toward the end edge 4a.

  Referring to FIG. 8, the slide piece 32 is formed to extend to the side opposite to the door 4 side, and the surface of the extended piece portion on the side of the operating piece 13 is an arm of the operating piece 13. It is a pressing surface 34 that always presses the portion 24. Further, the slide piece 32 includes a protrusion 35 that extends in the sliding direction of the slide piece 32 on the side opposite to the pressing surface 34 that presses the arm portion 24.

  As shown in FIGS. 8 to 11, the lock mechanism portion 20 is provided with a lock member biasing mechanism portion 40 that constantly biases the lock member 22 toward the locking position. The lock member urging mechanism 40 is disposed in the vicinity of the upper side of the casing 21, and is disposed on the inner side of the door 4 with respect to the above-described operating piece urging mechanism 30. The lock member urging mechanism 40 includes a slide piece 42 slidably attached to a guide (not shown) formed along the upper side of the casing 21, and the slide piece 42 on the lock member 22 side. And a coil spring 43 that is constantly energized.

The slide piece 42 includes a support portion 44 that protrudes toward the coil spring 43 and supports the end portion 43a of the coil spring 43, and a pressing portion 45 that extends to the opposite side of the support portion 44 along the side wall of the casing 21. Is done. In the lock member urging mechanism 40, the slide piece 42 is urged toward the lock member 22 by the coil spring 43, so the pressing portion 45 presses the arm portion 24 of the lock member 22, and the locking member 22 is pressed by the pressing portion 45. Is biased toward the locking position.
In addition, when the lock member 22 is in the locking position, the slide piece 42 is configured such that the pressing portion 45 extends above the arm portion 24 of the lock member 22. Rotating operation other than the unlocking operation of the lock member 22 to the unlocking position, for example, opening by so-called picking that rotates the lock member 22 using a metal fitting or the like from the gap between the door 4 and the opening edge of the cabinet 2. The lock can be prevented.

  With reference to FIGS. 6 and 7, the lock mechanism unit 20 includes a slide piece 52 slidable inward and outward of the door 4, and a coil spring 53 that urges the slide piece 52 toward the inside of the door 4 inward and outward. The rocking | fluctuation control mechanism 50 provided with is provided.

  The slide piece 52 includes a pressing portion 54 pressed by a coil spring 53 and a slide main body portion 55 formed on the upper side of the pressing portion 54 and extending to the lock member 22 side. The slide piece 52 has a restriction position (see FIG. 6) that restricts the arm portion 24 of the lock member 22 from swinging to the lock position side when the lock member 22 is in the lock release position, and the lock member 22 In the case of the locking position, it can be displaced between an allowable position (see FIG. 7) that allows the arm portion 24 of the lock member 22 to swing.

  Referring to FIGS. 6 and 9, when the lock member 22 is in the unlocking position and the slide piece 52 is in the restricting position, the end portion 55 a of the slide main body portion 55 is moved by the biasing force of the coil spring 53. The arm portion 24 held in the swing locus and pressed by the coil spring 43 of the lock member urging mechanism portion 40 abuts against the end portion 55a, so that the lock member 22 is not swinged to the locking position. Become.

  On the other hand, the pressing portion 54 of the slide piece 52 is pressed by a protrusion T (see FIG. 3) formed on the opening periphery of the cabinet 2 when the door 4 is closed. When the coil spring 53 is pressed, the coil spring 53 is displaced in a retracting direction. At this time, the coil spring 53 is retracted and the end portion 55 a of the slide piece 52 is disposed at a position deviated from the swing locus of the arm portion 24. As a result, the arm portion 24 pressed by the coil spring 43 of the lock member urging mechanism 40 is swung and held to the locking position by the urging force of the coil spring 43 (see FIG. 7). The return means of the present invention is configured by the lock member urging mechanism 40, the slide piece 52, the coil spring 53, and the protrusion T described above.

  With reference to FIGS. 4 to 7, the lock mechanism portion 20 further includes a tapered latch portion 60 that protrudes toward the opening edge side of the cabinet 2 below the lock member 22. The latch portion 60 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 63 and can be immersed by an operating force when the door 4 is opened and closed.

  The locking device 1 of this embodiment has the above-described configuration. Next, the operation of the locking device 1 will be described with reference to the drawings. In the description of this operation, a series of operations from when the door 4 is locked until it is unlocked and opened and then locked again will be described.

  First, as shown in FIG. 2, 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 (FIG. 2). Rotate to the middle (indicated by a two-point difference line).

By the turning operation of the locking operation knob 11, the operating piece 13 is swung from the locking position (see FIG. 5) to the unlocking position (see FIG. 4).
By the swinging of the operating piece 13, the locked state shown in FIG. 8 is changed to the state shown in FIG. Specifically, the slide piece 32 is displaced in the compression direction of the coil spring 33 by being pressed by the flat plate portion 15 of the operating piece portion 13. Further, along with the displacement of the slide piece 32, the slide piece 42 is pressed by the protrusion 35, and the slide piece 42 is displaced in the compression direction of the coil spring 43. Furthermore, in parallel with this, the extension part 27 of the lock member 22 is pressed by the protrusion 16 of the operating piece part 13, and the lock member 22 is displaced to the unlocking position. Normally, the door 4 is opened by the user in this state.

When the door 4 is opened, the protrusion T (see FIG. 3 ) is separated from the pressing portion 54 of the slide piece 52, and there is no input for compressing the coil spring 53. Then, the coil spring 53 is displaced in the extending direction, and the end portion 55 a of the slide piece 52 is displaced within the swing locus of the arm portion 24. As a result, the rocking of the lock member 22 toward the locking position is restricted.

  Next, when there is no operation input to the locking operation knob 11 with the door 4 opened, the slide piece 32 is pushed back by the elastic force of the coil spring 33, and the operating piece 13 is pressed by the slide piece 32. Thus, the operating piece 13 is swung to the locking position. As a result, the push button 10 on the operation surface 6 is returned to the non-input state. Normally, in this state, the user performs the work of putting in / out the articles with respect to the storage 3 of the cabinet 2.

  Here, in the above description, a case has been described where there is no operation input to the locking operation knob 11 after the door 4 is opened, but when the locking operation knob 11 is returned to the locking position before the door 4 is opened. Since the slide piece 52 can swing, the lock member 22 is swung to the locking position and the door 4 is locked substantially simultaneously with the locking operation knob 11 being swung to the locking position. It becomes.

  Next, when the door 4 is closed, the pressing portion 54 of the slide piece 52 is pressed by the projection T in a direction against the elastic force of the coil spring 53, and the end portion 55 a of the slide piece 52 is shaken of the arm portion 24. Move to a position outside the movement trajectory. Then, the lock member 22 is swung to the locking position by the biasing force of the coil spring 43 of the lock member biasing mechanism 40, and the door 4 is locked.

  Therefore, according to the locking device 1 of the above-described embodiment, the operating piece portion 13 is closed by the operating piece portion urging mechanism 30 when no operation input such as the user releasing the locking operation knob 11 is performed. The locking operation knob 11 is returned to the locking operation position in conjunction with the displacement of the operating piece 13. When the operation input to the locking operation knob 11 disappears, the operating piece portion urging mechanism 30 immediately returns the operating piece portion 13 to the closed position, and the input code is reset to the non-input state. be able to. For this reason, it is possible to prevent the unlocked code from being stolen while suppressing the increase in cost due to the complicated configuration of the code lock main body 5.

  Furthermore, the timing at which the locking member 22 returns to the locking position is delayed with respect to the timing at which the operating piece 13 is displaced to the closed position and the code is reset to the non-input state, and the door 4 is brought to the closed position. Sometimes, since the lock member 22 can be returned to the locking position, the door 4 can be locked without any special operation by the user.

  Furthermore, when the door 4 is opened, the lock member 22 is not swung by the urging force of the lock member urging mechanism 40, and the rocking restriction state is established when the door 4 is closed. Therefore, even after the push button 10 is reset to the non-input state, the lock member 22 is held at the lock release position, and the lock member 22 is locked at the timing when the door 4 is closed. Can be displaced. As a result, since the return means can be configured with a simple configuration, an increase in the number of parts and an increase in the number of assembly steps can be suppressed.

  Furthermore, the convenience of the cabinet 2 in which a large number of users exist in an office or the like can be improved by providing the lock mechanism unit 20.

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 1 in the above-described embodiment, the case where the protrusion 16 is formed on the operating piece 13 and the slide piece 32 and the extending portion 27 can be pressed has been described as an example. For example, as shown in FIG. 11, a protruding portion 132 a that protrudes from the slide piece 132 of the lock member biasing mechanism portion 40 toward the arm portion 24 side of the extending portion 27 may be formed. . With this configuration, when the slide piece 132 is pressed by the flat plate portion 15 of the operating piece portion 13, the extension portion 27 can be pressed by the slide piece 132, and thus the protrusion 16 of the above-described embodiment. Can be omitted.

  Furthermore, although the case where the coil springs 33, 43, 53 are respectively used as the biasing means has been described in the locking device of the above-described embodiment, the elastic body capable of biasing the operating piece portion 13, the lock member 22, and the slide piece 52. If it is, it is not restricted to a coil spring.

11 Locking operation knob (Locking operation part)
13 Acting piece 22 Locking member 30 Acting piece biasing mechanism (working piece biasing means)
20 Locking mechanism 40 Locking member biasing mechanism (return means)
52 Slide piece (return means, swing regulation mechanism)
53 Coil spring (return means, swing regulation mechanism)
T Protrusion (return means)

Claims (3)

A locking operation unit that is displaceable between a locking operation position and an unlocking operation position;
An operation piece that is displaceable between a locking position and an unlocking position in conjunction with the locking operation section;
A code can be input, the input code and a preset unlocking code are collated, and when the code does not match the unlocking code, the locking operation unit is held at the locking position, When the input code coincides with the unlocking code, the locking operation unit is released from being held at the locking position, and can be displaced to the unlocking position. In the case of being displaced to the locking position, a code lock unit that resets the input code to a non-input state,
Displaceable between a locking position locked to the opening periphery of the cabinet and restricting the displacement of the cabinet door in the opening and closing direction, and a locking release position for releasing the locking, the operating piece portion Is displaced from the locking position to the unlocking position in conjunction with the operating piece when the is displaced from the locking position to the unlocking position;
An operating piece urging means for constantly urging the operating piece toward the locking position;
A locking device comprising: a lock mechanism having a return means for returning the lock member from the lock release position to the lock position when the door is closed . The return means includes
Lock member biasing means for biasing the lock member toward the locking position;
When the door is open, when the lock member urged by the lock member urging means is held in a rocking regulation state that regulates rocking, while the door is closed, The locking device according to claim 1, further comprising a swing restriction mechanism that releases the swing restriction state. Cabinet, characterized in that it comprises a locking device according to claim 1 or 2.

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