JP2016089376A - Locking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a locking device capable of preventing an external force from being transmitted to an inner mechanism by a simple structure when the external force acts on a dead bolt that may be exposed to outside, thereby preventing damage on the internal mechanism due to the external force.SOLUTION: A part of side edge of a rotation link 34 is pushed and rotated by a tip 30a of a rotation arm 30 due to a rotation of the rotation arm 30 from an unlock position to a lock position, and a dead bolt 28 is moved from the unlock position to the lock position. When the rotation arm 30 reaches the lock position, the rotation arm 30 is substantially perpendicular to the rotation link 34, and the rotation of the rotation link 34 in a direction in which the dead bolt moves from the lock position to the unlock position is prevented by the rotation arm 30.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a locking device that locks moving members such as cabinet drawers and locker doors in a closed state with respect to fixing members such as cabinets and locker housings.

  In this type of conventional locking device, a key is inserted into the cylinder lock provided on the front surface of the upper lid of the cabinet and rotated to move the operating pin provided at the rear end of the cylinder lock upward. With the actuating pin, the front part of the swinging plate provided in the upper collar facing the left-right direction is rotated upward with respect to the rear part, and accordingly, the vertical direction locked to the front part at both ends of the swinging plate is changed. There is one in which a pair of right and left lifting rods facing up is raised and a plurality of drawers arranged in the vertical direction are locked simultaneously (for example, see Patent Document 1).

  In addition, there is a dial lock provided with a dial and a knob on the front plate of the drawer of the cabinet, and by this operation, the locking member is advanced and retracted from the side of the drawer, and the drawer is locked to the housing. (For example, refer to Patent Document 2).

  In addition, a dial lock is provided on the front plate of the drawer of the storage device, and by operating this, the lever is moved forward and backward from the casing of the dial lock, and the unlocked state in which the handle operation is enabled The reset rod projecting from the casing of the dial lock is linked to an operating body that detects the closed state and the pulled-out state of the drawer. Some locks can be reset to a non-verified state (see, for example, Patent Document 3).

JP-A-8-275832 JP 2011-132767 A International Publication WO2009 / 090091 A1

In the conventional locking device as described above, the lifting / lowering rod (Patent Document 1), the locking member (Patent Document 2), and the actuating member (Patent Document 3) that may be exposed to the outside from a moving member such as a drawer are large. When an external force is applied, the force is transmitted to the component member in the locking device, and the component member may be damaged.
In particular, in the case of using a dial lock, the mechanism portion is complicated, and therefore, when a large external force acts on the mechanism portion, the mechanism portion is likely to be damaged.

  The present invention has been made in view of the above-described problems of the prior art, and when an external force acts on a dead bolt that may be exposed to the outside, the external force is transmitted to an internal mechanism. It is an object of the present invention to provide a locking device that can prevent the internal mechanism from being damaged by an external force.

According to the present invention, the above problem is solved as follows.
(1) A main body is provided on one of the fixed member and a movable member movable with respect to the fixed member, and a dead bolt in the main body is provided on the other of the fixed member and the movable member. In the locking device that allows the moving member to be locked by entering the joint portion, the main body has a base integrated with either the fixed member or the moving member, and the engaging portion. By being able to move to an unlocking position to enter and an unlocking position to disengage from the engaging portion, the dead bolt provided on the base, an operating means provided on the base, and an operation of the operating means, A rotating arm adapted to be rotated between a locking position and an unlocking position, pivotally attached to the base, a part linked to the dead bolt, and a side edge of the other part at the side of the rotating arm The tip is Then, by rotating the rotating arm from the unlocking position to the locking position, the side edge of the other part is pushed and rotated by the tip of the rotating arm, and the dead bolt is unlocked. When the rotation arm reaches the locking position, the rotation of the dead bolt is substantially perpendicular to the rotation arm and the dead bolt is moved from the locking position to the unlocking position. It is assumed that a rotation link that is blocked by the rotation arm is provided.

According to such a configuration, when an external force is applied to the dead bolt in a state where the dead bolt is located at the locking position, the rotation link is released accordingly. At this time, the tip of the rotating arm is in contact with the side edge of the other part of the rotating link so as to form a right angle. The moment acts only in the longitudinal direction of the pivot arm, and no component force is generated in the pivot direction.
Therefore, as long as the strength of the pivot axis of the rotating arm is sufficiently maintained, the external force acting on the dead bolt is not transmitted to the internal mechanism of the locking device, and the internal mechanism can be prevented from being damaged by the external force. it can.
In addition, since the internal mechanism can be prevented from being damaged by an external force with only a simple structure in which the rotation link and the rotation arm are brought into contact with each other at a right angle during locking, there is a great practical advantage.

(2) In the above item (1), when the tip of the rotating arm is shaped like a plate perpendicular to the rotating surface of the rotating link, the rotating arm is rotated from the unlocked position to the locked position. When the pivot link is pushed by the side edge of the plate-shaped tip, and the pivot arm reaches the locked position, the flat surface of the plate-shaped tip contacts the pivot link. To do.

  According to such a configuration, in the locked state, the distal end portion of the rotating arm is in surface contact with the rotating link, so that the moment of the rotating link when an external force acts on the dead bolt is It can be received strongly in the department.

(3) In the above item (2), a pad material is provided on the plane of the plate-like tip of the rotating arm.

  According to such a configuration, the pad material acts as a cushioning material and a sound deadening material, and the impact when an external force acts on the deadbolt can be mitigated and the generation of noise can be suppressed.

(4) In any one of the above items (1) to (3), the base is provided with a biasing means that biases the dead bolt in a direction to move from the locking position to the unlocking position.

According to such a configuration, when the rotating arm is rotated to the unlocking position, the dead bolt and the rotating link can be reliably returned to the unlocking position.
Therefore, it is possible to carry out the deadbolt in a horizontal direction or a downward direction.

(5) In any one of the above items (1) to (4), the operating means includes a plurality of dials and a knob for rotating the rotating arm to the locked position and the unlocked position, and the numerical value of the dial is Only when the set numerical value is met, the dial lock is made to allow operation from the locking position of the knob to the unlocking position.

  According to such a configuration, the external force acting on the dead bolt is not transmitted to the complicated internal mechanisms of the plurality of dials in the dial lock, so that the internal mechanism can be prevented from being damaged.

  According to the present invention, when an external force is applied to a dead bolt that may be exposed to the outside, it is possible to prevent the external force from being transmitted to the internal mechanism with a simple structure. It is possible to provide a locking device that can prevent the breakage of the lock.

It is a front view in the unlocking state of a cabinet provided with 1st Embodiment of the locking device of this invention. It is an expansion vertical side view in the II-II line of FIG. FIG. 3 is a longitudinal rear view taken along line III-III in FIG. 2. FIG. 4 is a longitudinal rear view similar to FIG. 3 when in a locked state. It is a disassembled perspective view which shows only the mechanism by the side of the housing | casing of the simultaneous drawer | drawing-out prevention mechanism and locking device in a cabinet. It is a vertical side view similar to FIG. 2 in a cabinet provided with 2nd Embodiment of the locking device of this invention.

Hereinafter, embodiments of the locking device of the present invention will be described with reference to the drawings.
FIGS. 1-5 shows an example of the cabinet provided with 1st Embodiment of the locking device of this invention.
As shown in FIG. 1, this cabinet consists of a cabinet 1 with an open front, with three upper and lower drawers 2, 3, 4 mounted so that they can be pulled forward.

As shown in FIGS. 1 to 5, the housing 1 includes a top plate 5, left and right side plates 6, 6, a rear plate (not shown), and a bottom plate (not shown).
At the front end portion of the top plate 5, an upper collar 7 is formed that includes a front piece 7 a that hangs down from the front end of the top plate 5 and a folded piece 7 b that faces rearward from the lower end of the front piece 7 a.

The casing 1 is provided with the same configuration as the configuration excluding the cylinder lock in the simultaneous drawer preventing mechanism / locking device described in Japanese Patent Application Laid-Open No. 8-275732, which is Patent Document 1.
In other words, in the housing 1, as shown in FIGS. 2 and 5, the bracket 8 facing in the left-right direction which forms a substantially downward U-shape in a side view fixed to the rear of the upper collar 7 on the lower surface of the top plate 5 is provided. A plurality of projecting pieces 9b which are disposed in the bracket 8 and project rearward from a plurality of positions on the rear end upper part of the base piece 9a which has a substantially upward U-shape in a side view and which faces in the left-right direction. 8 is engaged with a plurality of engagement holes 10 provided in the rear piece 8a, and a long engagement hole 9c provided in each projection piece 9b in the left-right direction is formed from the lower edge center of each engagement hole 10 in the bracket 8. By engaging and locking the engaging pieces 10a and 10a (both left and right sides) having a T-shape, which are projected upward, and the engaging pieces 10b (center one) having an inverted L-shape in front view, 2 is a substantially horizontal unlocking position indicated by a solid line, and is inclined forward and upward indicated by an imaginary line in FIG. At the locking position, the swing plate 9 that can be turned up and down around the fitting portion between the engagement hole 9c of the protruding piece 9b and the engagement pieces 10a and 10b, and the left and right side plates 6, 6 is fitted into the concave groove 11 provided on the inner side surface of the inner surface 6 so as to be slidable in the vertical direction. The engagement holes 12 provided in the upper end portion are fitted to the left and right ends of the base piece 9a of the swing plate 9. By fitting the protruding piece 9d protruding outward from the front portion, when the swing plate 9 is rotated to the lock position, it is raised to the lock position and the swing plate 9 is unlocked. A pair of left and right elevating rods 13 and 13 are provided that are lowered to the unlocked position when rotated to the locked position.

  A protrusion 14 (only the right side of the uppermost drawer 2 is indicated by a two-dot chain line) is provided on the inner surface of each lifting / lowering rod 13 so as to protrude from the side surfaces of the drawers 2, 3, and 4. A rectangular parallelepiped guide piece 16 provided with an inclined groove 15 which is inclined forward and downward is provided on the inner surface so as to face the side surfaces of the drawers 2, 3 and 4.

  When the swing plate 9 is rotated to the locking position and each lifting / lowering rod 13 is pulled up to the locking position, any of the drawers 2, 3, 4 will be pulled out, and the protrusions projecting from the side surfaces thereof The child 14 abuts on the rear end surface of the corresponding guide piece 16 and cannot be pulled out. This state is a locked state.

  In the state where the swing plate 9 is rotated to the unlocking position and each lifting / lowering rod 13 is lowered to the unlocking position (this state is the unlocking state), any one of the drawers 2, 3, 4 When the (drawer 2 here) is pulled out, the protrusion 14 protruding from the side surface enters the inclined groove 15 of the corresponding guide piece 16 and passes through the inclined groove 15 by the action of the inclined cam. The left and right guide pieces 16 and 16 and the elevating rods 13 and 13 are pushed up to the locking position, held in that position by holding means (not shown), and then the drawers 3 and 4 other than the drawer 2 that has been pulled out. Cannot be pulled out (prevents simultaneous withdrawal).

  When the pulled-out drawer 2 is returned to the original closed position, the protrusion 14 projecting on the side surface enters the inclined groove 15 of the corresponding guide piece 16 in the opposite direction to the above. While passing through the inclined groove 15, the left and right guide pieces 16, 16 and the lifting rods 13, 13 are pushed down to the unlocked position against the holding force of the holding means by the action of the inclined cam. Thereafter, any of the drawers 2, 3, and 4 can be pulled out.

Engagement holes 17 are provided at the corners of the front surface and the lower surface of the base piece 9a at the portion of the swing plate 9 that is closer to the right than the center in the left-right direction.
Further, the front piece 8 b of the bracket 8 is provided with a stepped notch 18 whose upper left and right width is smaller than the left and right width of the engagement hole 17 and whose lower left and right width is larger than the left and right width of the engagement hole 17. One end of the lower portion of the notch 18 is fixed to the lower surface of the bracket 8 (or the lower surface of the top plate 5), and the other end extends forward above the folded piece 7b of the upper collar 7. A bracket 19 having a crank shape in a side view is disposed.
A rotating plate 20 facing in the left-right direction is pivotally attached to a portion of the bracket 19 positioned above the folded piece 7b of the upper collar 7 with a hinge 21 having a pivot 21a facing in the front-rear direction.

A shaft 22 facing in the front-rear direction is fixed to the free end of the rotating plate 20.
The rear end portion of the shaft 22 enters the engagement hole 17 in the swing plate 9 from the front, and when the rotary plate 20 is turned upward, the rear end portion of the shaft 22 is held by the swing plate 9. Can be turned upward to the locked position.

  As shown in FIG. 1, a handle 24 having a substantially square front shape provided with a concave portion 24a for handling is provided at the center of the front plate 23 in each of the drawers 2, 3, and 4. Even if a finger is inserted into the recess 24a of the handle 24 and either of the upper, lower, left and right edges is pulled forward, the latches (not shown) provided on the drawers 2, 3, and 4 are released, 3 and 4 can be pulled out, but since this mechanism is not directly related to the present invention, illustration and detailed description thereof are omitted.

The front plate 23 of the uppermost drawer 2 is provided with a main body 26 of a locking device 25 that locks the drawer 2 as a moving member in a closed state with respect to the casing 1 as a fixing member.
As shown in FIGS. 2 to 4, the main body 26 abuts the base 27 forming the front plate 23 itself and the lower surface of the rotating plate 20 whose upper end is an engaging portion when the drawer 2 is closed. A lock position where the swing plate 9 can be set to the lock position via the push-up shaft 22, and an unlock position where the upper end is released downward from the lower surface of the rotation plate 20 and the swing plate 9 can be set to the unlock position. The dead bolt 28 provided on the base 27 facing the vertical direction, the operating means 29 provided on the base 27, and the operating means 29 are operated to rotate to the locked position and the unlocked position. A pivot arm 30 that can be moved and an intermediate portion are pivotally attached to a bracket 31 fixed to the rear surface of the base 27 with a shaft 32 that faces in the front-rear direction, and one end portion is attached to the lower end portion of the dead bolt 28 in the front-rear direction. Connected with shaft 33 pointing in the direction and others The tip of the rotating arm 30 abuts on the upper edge of the portion, and the dead bolt 28 is pushed up from the unlocking position to the locking position by rotating the rotating arm 30 from the unlocking position to the locking position. Dynamic link 34.

  Although the base 27 is the front plate 23 itself in this example, the base 27 is a case (not shown) fixed to the front plate 23, and the dead bolt 28, the operating means 29, the rotating arm 30 and the like are attached to the case. Sometimes.

  A long hole 35 facing in the longitudinal direction is provided in an intermediate portion of the dead bolt 28, and a guide roller 37 pivotally attached to the bracket 31 with a shaft 36 facing in the front-rear direction is rotatably fitted in the long hole 35. Thus, the intermediate portion of the dead bolt 28 is guided so as to be movable in the vertical direction and rotatable about the shaft 36.

In this example, the operation means 29 is a dial lock 38 provided on the right side of the front plate 23 of the uppermost drawer 2 as shown in FIG.
The dial lock 38 includes three dials 39 and one rotary knob 40 that can be rotated between a locking position and an unlocking position.

The dial lock 38 is set in a state where the knob 40 is in the unlocked position, the three dials 39 are set to arbitrary three-digit numerical values, and the knob 40 is rotated to the locked position in that state. All the three dials 39 are reset to 0, and then the knob 40 can be rotated back to the unlocked position only when the three dials 39 are set to any previously set numerical value. It is like that.
In addition, the dial lock 38 from which the operation point differs from said point can also be used.

  As shown in FIGS. 3 and 4, an operation shaft 41 that rotates together with the knob 40 protrudes from the rear surface of the dial lock 38. The base end portion of the turning arm 30 that is turnable is fixed to the unlocking position shown in FIG. 4 and the locking position shown in FIG.

  The distal end portion 30a of the rotation arm 30 has a plate shape that is orthogonal to the rotation surface of the rotation link 34 and also orthogonal to the longitudinal direction of the rotation arm 30, and the rotation arm 30 is moved from the unlocked position to the locked position. When rotating, the lower edge of the plate-like tip 30a abuts on the upper edge of the rotation link 34 on the other end side from the shaft 32, and the upper edge is pushed downward to rotate. When the arm 30 reaches the locking position, as shown in FIG. 4, the plate surface (plane) 30 b of the plate-like tip 30 a faces the upper edge on the other end side from the shaft 32 in the rotation link 34. At this time, the rotation arm 30 is substantially perpendicular to the rotation link 34, and the rotation of the rotation link 34 in the direction in which the dead bolt 28 moves from the locked position to the unlocked position is rotated. It is blocked by the moving arm 30.

At this time, the moment of the rotation link 34 acts only in the longitudinal direction of the rotation arm 30, and no component force is generated in the rotation direction.
Therefore, as long as the strength of the operation shaft 41 that is the pivot of the rotating arm 30 is sufficiently maintained, the external force acting on the dead bolt 28 at the locking position is not transmitted to the mechanism inside the locking device 25. The internal mechanism can be prevented from being damaged by an external force.

It is preferable to provide a pad material 42 that acts as a cushioning material and a sound deadening material on the plate surface 30b of the tip 30a of the rotating arm 30.
The pad material 42 can alleviate the impact when an external force is applied to the dead bolt 28 and can suppress the generation of noise.

  When the dial lock 38 is operated, as shown in FIG. 4, the rotating arm 30 is rotated to the locked position. When the dead link 28 is pushed up to the locked position by the rotation of the rotating link 34 at that time, The upper end of the pivot plate 20 is pivoted upward. At that time, the shaft 22 is lifted, and the front portion of the swing plate 9 whose rear end portion enters the engagement hole 17 is pivoted upward. Thus, as described above, all the drawers 2, 3, and 4 in the housing 1 are locked.

  A biasing means for biasing the dead bolt 28 toward the unlocking position via the pivot link 34 is provided at an intermediate position between the shaft 32 and the shaft 33 in the pivot link 34 and the lower edge of the bracket 31. The upper and lower ends of a certain tension coil spring 43 are locked.

  Therefore, when the rotating arm 30 is rotated to the unlocked position by the operation of the dial lock 38, the rotating link 34 is rotated clockwise from the state shown in FIG. 4 by the urging force of the tension coil spring 43. The dead bolt 28 is lowered to the unlocking position shown in FIG. 3, and the lower end of the dead bolt 28 comes into contact with a stopper 45 provided on the projecting piece 44 projecting backward from the lower portion of the bracket 31. Be stopped.

  When the dead bolt 28 is lowered to the unlocking position shown in FIG. 3, the rotating plate 20 rotates downward to a substantially horizontal position by its own weight, and an elastic stopper provided on the lower surface of the rotating plate 20. 46 is brought into contact with the upper surface of the folded piece 7b of the upper collar 7 and stopped.

  By downward rotation of the rotation plate 20, the shaft 22 is lowered, the swing plate 9 is returned to the unlocked position, and all the drawers 2, 3, and 4 can be selectively pulled out.

  The rear surface of the front plate 23 in the drawer 2 is provided with a back plate that covers the constituent members of the main body 26 of the locking device 25, but is omitted here for the sake of simplicity.

Since the locking device 25 is configured as described above, the external force acting on the dead bolt 28 is not transmitted to the mechanism inside the locking device 25, and the internal mechanism can be prevented from being damaged by the external force. it can.
Moreover, since the internal mechanism can be prevented from being damaged by an external force with only a simple structure in which the rotational link 34 and the rotational arm 30 are brought into contact with each other at a right angle during locking, there is a great practical advantage. .

FIG. 6 shows an example of a cabinet provided with the second embodiment of the locking device of the present invention. Note that the same or similar members as those in the first embodiment are denoted by the same reference numerals and illustrated, and detailed description thereof will be omitted.
In the second embodiment, an engagement hole 50 is provided in the folded piece 7 b of the upper collar 7 of the housing 1, and this is referred to as an “engagement portion” provided in the fixing member in the present invention. When the locking position is reached, the upper end of the dead bolt 28 enters and enters a locked state in which the drawer 2 cannot be pulled out.
With such a configuration, the structure can be further simplified.

The present invention is not limited only to the above-described embodiments, and can be implemented in the following modified modes, for example, without departing from the scope of the claims.
(1) The main body 26 of the locking device 25 is provided on the fixed member side such as the housing 1, and the engaging portion into which the dead bolt enters is provided on the moving member side such as a drawer.
(2) The rotating plate 20 and the shaft 22 are omitted, the upper end portion of the dead bolt 28 is bent rearward, and the rear end portion thereof can directly enter the engagement hole 17 of the swing plate 9, With the rear end, the swing plate 9 is rotated to the locking position.
In this case, the engagement hole 17 of the swing plate 9 becomes an “engagement portion” provided in the fixing member in the present invention.
(3) Instead of the dial lock 38, a cylinder lock is used.

  The present invention is applicable not only to a drawer drawer locking device, but also to any locking device that locks a moving member in a closed state with respect to a fixed member, such as a door locking device for a locker housing. Can do.

1 Housing (fixing member)
2, 3, 4 Drawer (moving member)
5 Top plate 6 Side plate 7 Upper plate 7a Front piece 7b Folding piece 8 Bracket 8a Rear piece 8b Front piece 9 Swing plate 9a Base piece 9b Projection piece 9c Engagement hole 9d Projection piece 10 Engagement hole 10a, 10b Engagement piece 11 Concave groove 12 Engagement hole 13 Lifting rod 14 Projection 15 Inclined groove 16 Guide piece 17 Engagement hole 18 Notch 19 Bracket 20 Rotating plate (engaging part)
21 hinge 21a pivot 22 shaft 23 front plate 24 handle 24a recess 25 locking device 26 main body 27 base 28 dead bolt 29 operating means 30 rotating arm 30a tip 30b plate surface (plane)
31 Brackets 32, 33 Shaft 34 Rotating link 35 Long hole 36 Shaft 37 Guide roller 38 Dial lock (operating means)
39 Dial 40 Knob 41 Operation shaft 42 Pad material 43 Tension coil spring 44 Projection piece 45, 46 Stopper 50 Engagement hole (engagement part)

Claims (5)

A main body is provided on one of the fixed member and a movable member that is movable with respect to the fixed member, and a dead bolt in the main body is attached to an engaging portion provided on the other of the fixed member and the movable member. In the locking device that allows the moving member to be in a locked state by entering,
The body is
A base integrated with one of the fixed member and the moving member;
The deadbolt provided on the base as movable to a locking position for entering the engaging portion and an unlocking position for releasing from the engaging portion,
Operating means provided on the base;
A rotating arm adapted to be rotated to a locked position and an unlocked position by operation of the operating means;
It is pivotally attached to the base, a part thereof is linked to the dead bolt, and the tip of the rotating arm comes into contact with the side edge of the other part, so that the rotating arm can be rotated from the unlocked position to the locked position. Due to the movement, the side edge of the other part is pushed and rotated by the tip of the rotating arm, the dead bolt is moved from the unlocked position to the locked position, and the rotating arm reaches the locked position. A rotating link that is substantially perpendicular to the rotating arm and is configured to be prevented by the rotating arm from rotating in a direction in which the dead bolt moves from the locked position to the unlocked position. A locking device characterized by that.   The tip of the pivot arm has a plate shape perpendicular to the pivot surface of the pivot link, and when the pivot arm pivots from the unlocked position to the locked position, the side edge of the plate-like tip section Thus, when the rotating link is pushed and the rotating arm reaches the locking position, the flat surface of the plate-like tip is brought into surface contact with the side edge of the other part of the rotating link. The locking device according to claim 1.   The locking device according to claim 2, wherein a pad material is provided on a plane of the plate-like tip portion of the rotating arm.   The locking device according to any one of claims 1 to 3, wherein the base is provided with urging means for urging the dead bolt in a direction to move from the locking position to the unlocking position.   The operating means includes a knob for turning a plurality of dials and a rotating arm to a locked position and an unlocked position, and is unlocked from the lock position of the knob only when the numerical value of the dial matches the set value. The locking device according to any one of claims 1 to 4, wherein the locking device is a dial lock that enables operation to a lock position.

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