JP2008208661A - Lock device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lock device, reducing the time and trouble for operating a dial lock, and adding a security function in a simple constitution. <P>SOLUTION: A matching detecting part 35 is provided in association with dials 3a-3d as identification number input parts. The matching detecting part 35 detects the matching state to project and recess through a dead bolt 36 as an engagement part, and the projecting and recessing operation is directly concerned with the switching operation of a locking and unlocking switching part 5 which is moved to a lock position or an unlock position for a locking part 4 to thereby switch the locking state. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a lock device that can be used for locking a closed state by a door of a housing, which can add a security function with a simple configuration with few steps for operating a dial lock.

This type of locking device is attached to a door provided with a mooring portion such as a latch, restrains the mooring portion from being operated by aligning a dial lock or the like, and when the door is opened, the mooring portion Generally, it is configured to release the constraint.

As a specific configuration for that purpose, for example, the movement of the sickle lock as shown in FIG. 23 of Patent Document 1 is constrained or released depending on the presence or absence of a collation state such as a dial. After releasing the restraint by operation, the knob is operated to move the sickle lock to the moored position, or after moving the sickle lock to the moored position, the mooring portion is restrained by dial operation.
Japanese Patent Publication No. 6-60544

However, in such a case, when releasing the lock, it is necessary to move the sickle lock to the moored position by operating the knob after operating the dial input, etc. In this case, it is necessary to operate the knob to move the sickle lock to the mooring position and then add a dial operation. In either case, there is a problem that the procedure from locking to unlocking is complicated. In particular, since the input of the reference number and the movement of the sickle lock are completely independent of each other, there is a problem that it is easy to fall into a halfway operation situation. Further, in order to restrain the movement of the sickle lock, a restraining means having a proper size and operating amount is required.

The present invention has been made paying attention to such a problem, and provides an excellent locking device which can add a security function with a simple configuration with a small number of steps for operating a dial lock or the like. The purpose is that.

  In order to achieve this object, the present invention takes the following measures.

First, the locking device of the present invention is provided with a collation number input unit such as a dial in association with a collation detection unit, the collation detection unit detects a collation state and performs a plunging operation, and the plunging operation is performed on the locking unit. On the other hand, it is directly related to the switching operation of the locking / unlocking switching unit that moves to the locked position or unlocked position and switches the locked state.

If it does in this way, a collation detection part will automatically detect the input of collation number input parts, such as a dial, and will perform a sunk operation, and this will move or lock to the lock position to the lock part of the lock / unlock switch part directly. Since it leads to the movement to the release position, at least the operation can be reduced by one action. In addition, since the process from the input of the reference number to the operation of the locking / unlocking switching unit is performed in series, there is little possibility of a halfway operation state, and a smooth operation can be obtained.

Further, when the locking / unlocking switching unit is configured such that one end portion side is connected to the locking portion and the engaging portion is selectively engaged with the other end side through the protrusion / retraction operation of the verification detection unit. By properly communicating between the locking part and the collation detecting part with a simple configuration, when the engaging part is engaged, the locking / unlocking switching part is held at a predetermined switching position, and the engaging part is engaged. When released, it is possible to appropriately allow movement of the locking / unlocking switching unit to another switching position.

Furthermore, when the locking / unlocking switching unit has a window, and the engagement unit is selectively engaged with the window through the protruding operation of the verification detection unit, the locking / unlocking switching unit is This is useful when the locking / unlocking / switching portion is securely held at a predetermined switching position.

Further, when the locking / unlocking switching portion is a thin plate and the engagement portion is engaged and disengaged within the thickness of the locking / unlocking switching portion, the locking / unlocking switching portion of the locking / unlocking switching portion can be moved with a slight protrusion / retraction amount of the engagement portion. Since it can be directly related to the switching operation and engaged in the direction orthogonal to the thickness direction, a reliable engagement state utilizing the rigidity of the member can be obtained. In addition, since the locking / unlocking / switching portion is thin, the mounting state stability and the space factor are also effectively improved, such as being arranged along the wall surface of the casing.

In particular, when the reference number input unit is a dial, such a seemingly different movement and the locking unit can be effectively associated by the present invention.

  Since the present invention has the above-described configuration, it is possible to provide an excellent locking device that can be effectively added with a simple configuration with less effort for operating the dial lock.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  This locking device is used to lock the door 2 attached to the housing 11 of the furniture such as a security box and storage tool as shown in FIG. 1 in the closed position. 3 and the locking unit 4 shown in FIGS. 2 and 4 are associated with each other via the locking / unlocking switching unit 5, and the dials 3a to 3d constituting the dial unit 3 are automatically collated. The lock portion 4 that is activated and locked is shifted to an unlocked state allowing the opening of the door 2 as shown in FIG. 4 to FIG. The dial is reset as shown in FIG. 3 to FIG. 6 by using the operating force taken out from FIG. 3, and the door is closed as it is, so that the door is again shifted to the locked state in which the opening of the door 2 is prohibited as shown in FIG. I try to do it.

  More specifically, the dial unit 3 includes four dials 3a provided so as to be rotatable around the common shaft 31 without being constrained to each other, as shown in FIGS. -3d, reset gears 32a-32d and collation number setting plates 33a-33d provided so as to be able to rotate integrally with each dial 3a-3d, and a shaft 34s parallel to the shaft 31 so that they can be rotated synchronously. And a drive gear group 34 in which drive gears 34a to 34d are arranged at positions that can be engaged with the reset gears 32a to 32d, respectively, and an elevating rod 30 that rotates the drive gear group 34 forward and backward by an elevating operation.

  When the collation numbers of the dials 3a to 3d are located in front, the collation number setting plates 33a to 33d are recessed portions 33ax to 33dx as shown in FIGS. Only when the recesses 33ax to 33dx are aligned, the detection ends 35ax to 35dx protruding from detection plates 35a to 35d constituting the collation detection unit 35 described later are engaged with the recesses 33ax to 33dx. ing. The reset gears 32a to 32d shown in FIGS. 8 and 9B are provided with tooth missing portions 32ax to 32dx aligned at a reset position (zero reset position where zeros are aligned in the illustrated example). On the other hand, the drive gear group 34 is formed with teeth on the outer periphery of each of the fan-shaped drive gears 34a to 34d. When the dial is operated, the meshing with the reset gears 32a to 32d is released as shown in FIGS. When the reset gears 32a to 32d are rotated by rotating simultaneously around the shaft 34s from the standby position, and when they arrive at the missing portions 32ax to 32dx of the respective reset gears 32a to 32d as shown in FIG. That is, when rotating to the zero reset position shown in FIGS. 6 and 9B, for example, the meshing with the reset gears 32a to 32d is released, and the feeding operation is stopped. Therefore, once this state is reached, even if the drive gears 34a to 34d rotate again, they do not interfere with the reset gears 32a to 32d, and the drive gear group 34 composed of the drive gears 34a to 34d is again shown in FIG. It is possible to return to the standby position shown in FIG. The drive gear group 34 is connected to an operation link 37 shown in FIGS. 2, 4, and 5 through an elevating bracket 300 to which the elevating rod 30 is attached. The operation link 37 uses the opening / closing operation of the door 2. By inputting the actuating force, a zero reset operation of the reset gears 32a to 32d is caused via the drive gear group 34.

  On the other hand, the collation detection unit 35 shown in FIG. 7 is attached so as to be able to rotate synchronously around the shaft 35s parallel to the shaft 31, and is in sliding contact with or close to the outer periphery of the corresponding collation number setting plates 33a to 33d. It consists of four detection plates 35a-35d from which detection ends 35ax-35dx protrude, and the detection plates 35a-35d are pressed by springs 35p in the direction in which the detection ends 35ax-35dx fit into the recesses 33ax-33dx. ing. Then, when the recesses 33ax to 33dx of the four verification number setting plates are matched, that is, when the numbers are verified, the recesses 33ax to 33dx are aligned, and the detection plates 35a to 35d are moved from the verification non-detection position to the shaft. The detection ends 35ax to 35dx can be rotated to the collation detection position where the detection ends 35ax to 35dx fit into the recesses 33ax to 33dx.

On the other hand, in the vicinity of the collation detection unit 35, as shown in FIGS. 4, 5 and 7, a block which is an engagement portion which advances and retreats in a direction orthogonal to the shafts 31 and 35s and protrudes and retracts from the back surface of the casing C. A body-like dead bolt 36 is arranged, and this dead bolt 36 is pushed and moved by a spring 36a in a direction protruding toward the back side of the casing C as shown in FIG. In addition, when the detection plates 35a to 35d detect the collation state and rotate as shown in FIGS. 11 to 7, the detection plates 35a to 35d are associated with each other so as to be pulled and moved to the immersion position. . The dead bolt 36 may be pin-shaped.

As shown in FIGS. 4 and 8 and the like, the locking / unlocking switching unit 5 is a plate-like member disposed so as to be rotatable around the shaft 51 while being in close contact with the back surface of the casing C. The window 54 provided on the other end 53 side is positioned at a position to selectively engage the dead bolt 36 that is an engaging portion that protrudes and retracts through the operation of the verification detection unit 35. As shown in FIG. 4, the locking / unlocking switching unit 5 has one end 52 holding the locking unit 4 in the locked position when the window 54 is positioned at a position that matches the dead bolt 36, as shown in FIG. When the locking / unlocking switching unit 5 rotates around the shaft 51 until the dead bolt 36 is immersed and the window 54 is disengaged from the dead bolt 36, the one end 52 moves the locking unit 4 to the unlocking position. The locking / unlocking switching unit 5 is pressed toward the unlocking position by a spring (not shown), and when the collating detection unit 35 detects the collation of the number and the dead bolt 36 is immersed, the unlocking is performed from the locked position. Move to position.

In the case of this embodiment, the locking portion 4 moves up and down between FIG. 4 and FIG. 5 so that the shaft 21 a of the handle 21 provided at the center of the door 2 and the latch 22 provided at the upper and lower edges of the door 2. It has a clutch 41 that selectively connects and disconnects the shaft 22a, and the locking / unlocking switching unit 5 described above is configured to cause the clutch 41 to move up and down. When the clutch 41 is raised, the shafts 21a and 22a are connected to each other. Then, the handle 21 is brought into the unlocked state, and when the clutch 41 is lowered, the connection between the shafts 21a and 22a is released and the handle 21 is brought into the locked state.

Therefore, it is detected that the collation detection unit 35 has been collated or reset, and the dead bolt 36 is caused to project and retract, and the projecting and retracting operation is performed by moving the locking / unlocking switching unit 5 to the lock position or the unlocking position. Directly connected to the switching action

Further, in this embodiment, as described above, the dials 3a to 3d are reset using the operating force extracted from the state change that occurs in the door 2 until the door 2 is closed, and then the door 2 is closed. In order to shift to the locked state that prohibits reopening at the time, the locking part 4 is moved again to the locked state from the housing 1 to which the door 2 is attached using the opening / closing operation that is a state change that occurs in the door 2. The pulling force that is the operating force is taken out.

Specifically, as shown in FIG. 5, one end 61 of the string 6 is connected to the side plate 22 of the housing 2 and the other end 62 is connected to the operating link 37 via a spring 63. The other end 62 of the string 2 is made to move away from the operating link 37 as the door 2 is opened and the other end 62 of the string 2 is left away as the door 2 is opened. By connecting to the operating link 37, the operating link 37 is pulled, whereby the operating link 37 is rotated around the shaft 37 a by a pulling force, and the lifting rod 30 is pulled up via the lifting bracket 300. Further, a cam 38 shown in FIG. 5 is attached around the shaft 38 a on the back surface of the casing C. The cam 38 is simultaneously rotated by the string 6, and the locking / unlocking switching unit 5 is illustrated at the rotating end 38 b of the cam 38. It is pushed back in the direction indicated by 4 to return to the locked position.

4 and 5 is a spring for lowering the elevating rod 30 via the operation link 37 when the string 6 is no longer in tension. The spring 63 has a larger elastic coefficient than the spring 39 and does not function when the string 6 is loose. However, the open state of the door 2 becomes large and the locking / unlocking switching unit 5 is locked to the dead bolt 36. Further, when the door 2 is about to be opened, the tension of the string 6 is released. Furthermore, what is indicated by reference numeral 7 in the figure is a resin dial operation assisting member attached to the lifting bracket 300, and elastically deformable pressing pieces 71a to 71d are formed at the tip of the dial operation assisting member 7. is there. That is, the above-described dials 3a to 3d are provided with a concavo-convex shape in which a portion where a numeral is indicated is convex and a space therebetween is concave, and the pressing pieces 71a to 71d are respectively connected to the dials 3a to 3d when the elevating bracket 300 is lowered. The dial operation can be performed with a click sensation while being elastically pressed against the concave portion of 3d.

Hereinafter, the operation of the present embodiment will be described.

When the door 3 is closed, when the dials 3a to 3d are in a non-collation state (for example, a zero reset state) and the locking unit 4 is in the locked state shown in FIG. 4, the detection plates 35a to 35d of the collation detection unit 35 are 11, the locking / unlocking switching unit 5 is in the locking position shown in FIG. 12, and the dead bolt 54, which is an engaging portion, projects and unlocks as shown in FIGS. The movement of the locking / unlocking switching unit 5 is restricted by fitting into the window of the lock switching unit 5. Since the clutch 41 constituting the locking part 4 is disengaged at one end 52 of the locking / unlocking switching part 5, even if the handle 21 is operated, the operating force is transmitted from the handle 21 to the latch 22 only by idling. Absent.

  When the dials 3a to 3d are operated from this state, the recesses 33ax to 33dx of the collation number setting plates 33a to 33d attached to the dials 3a to 3d when the collation numbers are matched are aligned as shown in FIG. Then, the collation detection plates 35a to 35d rotate from the collation non-detection position in FIG. 11 to the collation detection position in FIG. 7 and the detection ends 35ax to 35dx are fitted into the recesses 33ax to 33dx. The dead bolt 36 is immersed as shown in FIG. 11 → FIG. 7, and is retracted from the window 54 of the locking / unlocking switching unit 5. As a result, the locking / unlocking switching unit 5 is pushed by the spring to shift to the unlocking position where the clutch 41 is connected at one end 52 as shown in FIGS. 5 and 13, and the operating force input to the handle 21 is applied to the latch 22. Let the door 2 open.

  Thereafter, when the door 2 is opened, the operating link 37 is pulled by the string 6, and the drive gear group 34 in the standby position is rotated as shown in FIGS. Reset gears 32a to 32d are integrally provided on the side portions of the dials 3a to 3d. When the elevating rod 30 is moved up by the operation link 37 and the drive gears 34a to 34d are rotated, the drive gears 34a to 34d. Meshes with reset gears 32a to 32d attached to the dial to rotate the dials 3a to 3d. Each of the reset gears 32a to 32d is provided with the tooth missing portions 32ax to 32dx shown in FIGS. 7 and 9, and the tooth missing portions are aligned at the zero reset position so that the engagement with the drive gears 34a to 34d is released. All dials 3a to 3d are reset to zero until 2 is fully opened. On the other hand, when the first dials 3a to 3d start to move, the detection ends 35ax to 35dx of the matching detection plates 35a to 35d are driven out from the recesses 33ax to 33dx, so that the matching detection plates 35a to 35d are as shown in FIGS. Although it moves to the collation non-detection position, the dead bolt 36 that is the engaging portion is released from the regulation of the collation detection plates 35a to 35d, but the window 54 of the locking / unlocking / switching portion 5 is shifted as shown in FIG. The projecting operation is prohibited, and the immersion position is maintained while being pushed by the spring 36a without following this. On the other hand, as the door 2 is opened, the cam 38 rotates as shown in FIGS. 13 to 14 and presses the locking / unlocking switching unit 5 back to the original position. When the lock position shown in FIG. 12 is reached, the window 54 and the dead bolt 36 face each other. At this time, the dead bolt 36 that has been prohibited from projecting by the locking / unlocking switching unit 5 is released from the restriction, so that it projects and engages with the window 54, and the locking / unlocking switching unit 5 is again engaged with the clutch 41 at the one end 52. And the locking part 4 is held in a locked state.

  As the door 2 is closed, the string 6 is no longer tensioned and is pressed against the spring 39 attached to the operating link 37, and the lifting rod 30 descends. Accordingly, the drive gears 34a to 34d rotate in the direction returning from the reset position shown in FIGS. 6 and 10 to the standby position shown in FIGS. 3 and 7, but the reset gears 32a to 32d attached to the dials 3a to 3d Since the edge is cut, it can rotate without any trouble. Then, at the stage of closing the door 2, the latch 41 elastically engages the engaging claw 22x shown in FIG. 2 closes the opening of the housing 1.

As a result, the system returns to the first stage of the description of operation shown in FIG. 12 and the like, and when the door 2 is closed, the dials 3a to 3d are brought into the non-collation state (zero reset state), and the locking portion 4 is locked as shown in FIG. Kept in a state. The detection plates 35a to 35d of the collation detection unit 35 are in the collation non-detection position shown in FIG. 11, the locking / unlocking switching unit 5 is in the lock position shown in FIG. As shown in FIG.11 and FIG.12, it protrudes and it fits in the window of the locking / unlocking switching part 5, and the movement of the locking / unlocking switching part 5 is controlled. Since the clutch 41 constituting the locking portion 4 is disengaged at the one end portion 52 of the locking / unlocking switching portion 5, even if the handle 21 is operated, only the idle rotation occurs and no operating force is transmitted from the handle 21 to the latch 22.

As described above, the lock device of the present embodiment is provided with the collation detection unit 35 associated with the dials 3a to 3d, which are collation number input units, and the collation detection unit 35 detects the collation state and is an engagement unit. A projecting and retracting operation is performed via the dead bolt 36, and the projecting and retracting operation is directly related to the switching operation of the locking / unlocking switching unit 5 that moves to the locking position or the unlocking position with respect to the locking unit 4 and switches the locking state. The collation detection unit 35 automatically detects the input of the dials 3a to 3d and performs a protrusion / retraction operation, which directly moves the locking / unlocking / switching unit 5 to the locking position with respect to the locking unit 4 or This leads to movement to the unlocking position.

For this reason, compared to the conventional one in which the dial is operated to move the sickle lock to the moored position, or the dial is operated to move the sickle lock to the moored position. And at least the operation can be reduced by one action. In addition, since the process from the detection of the input of the reference number to the operation of the locking / unlocking / switching unit 5 is performed in series, there is little possibility of a halfway operating state, and a smooth operation can be ensured. .

In addition, the locking / unlocking switching unit 5 is connected to the locking unit 4 at one end 52 side, and selectively engages the dead bolt 36 as an engaging unit through the protrusion / retraction operation of the verification detection unit 35 at the other end 53 side. In this way, the locking unit 4 and the collation detection unit 35 are properly communicated with each other with a simple configuration, and when the dead bolt 36 is engaged, the locking / unlocking switching unit 5 is held at a predetermined switching position. And when the engagement of the deadbolt 36 is cancelled | released, the movement to the other switching position of the locking / unlocking switching part 5 can be accept | permitted appropriately.

Further, since the locking / unlocking switching unit 5 has a window 54 and the dead bolt 36 is selectively engaged with the window 54 through the protruding operation of the verification detecting unit 35, the locking / unlocking is performed when the dead bolt 36 protrudes. The movement of the switching unit 5 can be reliably restrained by the peripheral edge of the window 54, and the locking / unlocking switching unit 5 can be reliably held at a predetermined switching position.

In addition, since the locking / unlocking / switching section 5 is a thin plate and the dead bolt 36 is engaged and disengaged within the wall thickness, the locking / unlocking / switching switching section 5 can be achieved with a slight protrusion / retraction amount of the dead bolt 36. Therefore, it is possible to obtain a reliable engagement state utilizing the rigidity of the member. And since the locking / unlocking switching part 5 is thin, it can arrange | position along the wall surface of the casing C, and can contribute to the improvement of the stability of the attachment state, and a space factor effectively.

In particular, the reference number input unit of this embodiment is the dials 3a to 3d, and in the case of the conventional dial lock, in particular, the dial operation and the operation of the sickle lock are completely separate and independent. The effect obtained by associating the dials 3a to 3d and the locking portion 4 that move seemingly different from each other by the present invention is extremely great.

The specific configuration of each unit is not limited to the above-described embodiment,
Various modifications can be made without departing from the spirit of the present invention.

For example, even if the collation number input unit is a push type other than the dial lock, the same effects as those of the above embodiment are basically obtained.

Moreover, although the reset in the said embodiment was what is called zero reset, the aspect reset to the specific number other than zero, the aspect of the reset which cancels | releases a collation state at random, etc. are also implementable.

Furthermore, in the above embodiment, the string provided between the door and the housing is used to extract the operating force from the state change that occurs in the door, but basically the same operation as described above is possible even if a link or a wire is used. Can be obtained.

The perspective view which shows the furniture provided with the housing | casing and door to which one Embodiment of this invention is applied. The front view which shows the outline | summary of the locking device in the embodiment. The diagonal front perspective view which shows the dial unit of the embodiment. The rear perspective view which shows the outline | summary of the locking device of the embodiment. Explanatory drawing corresponding to FIG. Action explanatory drawing corresponding to FIG. The AA line expanded sectional view in FIG. The BB line expanded sectional view in FIG. The figure explaining the function of the zero reset in the embodiment. The figure explaining the function of the zero reset in the embodiment. The figure explaining the action | operation of the deadbolt in the embodiment. Action | operation explanatory drawing of the locking / unlocking switch part in the embodiment. Action | operation explanatory drawing of the locking / unlocking switch part in the embodiment. Action | operation explanatory drawing of the locking / unlocking switch part in the embodiment.

Explanation of symbols

3a, 3b, 3c, 3d ... collation number input part (dial)
DESCRIPTION OF SYMBOLS 5 ... Locking / unlocking switching part 35 ... Collation detection part 52 ... One end part 53 ... Other end part 54 ... Window

Claims (5)

A collation detection unit is provided in association with a collation number input unit such as a dial, and the collation detection unit detects a collation state and performs a plunging operation, and the plunging operation moves to a lock position or a lock release position with respect to the locking unit. Then, the locking device is directly related to the switching operation of the locking / unlocking switching unit that switches the locking state. The locking / unlocking switching unit is configured such that one end portion side is connected to the locking portion, and the engaging portion is selectively engaged with the other end portion through the protrusion / retraction operation of the verification detection unit. Locking device. The locking device according to claim 1 or 2, wherein the locking / unlocking switching unit has a window, and the engaging unit is selectively engaged with the window through the protruding operation of the verification detection unit. The locking device according to any one of claims 1 to 3, wherein the locking / unlocking switching portion is a thin plate, and the engaging portion is engaged and disengaged within the wall thickness. The lock device according to claim 1, wherein the reference number input unit is a dial.

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