JP3121774B2 - Automatic unlocking mechanism for moving shelf - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly releases automatically a lock mechanism in a locked state of a manually-movable shelf with a rotating handle by utilizing the movement of a weight operated by shaking or vibration such as an earthquake. The present invention relates to an automatic lock release mechanism, and more specifically, to a unitized automatic release mechanism.

[0002]

2. Description of the Related Art A moving shelf is composed of a plurality of shelves densely arranged on a rail.
Wheels are provided on each shelf so that they can be separated, and the turning force of the manual handle or the turning force of the motor is applied to the wheels via a transmission mechanism formed by a sprocket, a chain, a gear train, or the like. It is formed so that it can transmit and move on rails.

[0003] As described above, since each shelf can move freely, a space can be formed as a passage for a person to enter a necessary portion of the densely adjacent shelf adjacent to each other. A lock mechanism is provided to prevent the shelves from moving if a passageway is formed between any of the shelves because it is dangerous to move the shelves or other shelves when present. Further, in the lock mechanism, even when the shelves are densely used, the shelves are locked from the viewpoint of safety or prevention of theft, etc.

However, when each shelf is locked,
Although the above objectives can be achieved, it has been found that this situation can be rather dangerous. That is, when each shelf is locked, for example, when an earthquake occurs,
Because each shelf is locked, it shakes greatly on the spot,
That is, the contents in the shelves may fly out or the shelves may fall over.

In view of such a point, when the movable shelf in the locked state receives vibration such as an earthquake, a weight which swings due to the vibration is provided on the shelf, and the swing of the weight is Has been proposed in Japanese Patent Application No. 7-107867 or the like, which is used directly for the release operation of the lock mechanism.

The proposed automatic release mechanism of the lock mechanism has a structure in which the swinging motion of the weight provided in the side wall of the shelf is directly transmitted to the components of the lock mechanism in the lock release direction. Depending on the difference in the structure, it could not be applied as it was, and had to be extensively modified. Further, since the swinging motion of the weight is directly transmitted to the constituent members of the lock mechanism, the lock may not be reliably released depending on the size of the swinging amplitude of the weight. It turned out that.

[0007]

SUMMARY OF THE INVENTION In view of the above, the present invention can be applied only to small-scale remodeling regardless of the difference in the structure of the lock mechanism. An object of the present invention is to provide an automatic lock release mechanism capable of operating the lock mechanism in the release direction if the swing is equal to or more than a predetermined value.

[0008]

The structure of the lock release mechanism of the present invention, which has been made to solve the above-mentioned problems, is as follows.
In the casing, it is provided so as to be swingably suspended, and a weight having an appropriate portion formed on the operation surface, is urged in one direction by a spring force and slides, and is connected to a lock operation member of a lock mechanism. And a cam stopper for holding the operating block at a standby position against the spring force, the cam stopper being used for the swinging operation of the weight and releasing the holding position of the operating block. Provided
The casing is mounted adjacent to an operating member of a lock mechanism disposed in a vertical plane orthogonal to the axis of the rotating member in the transmission mechanism of the moving shelf and arranged to engage with the rotating member, and the operating block is provided. It is characterized by being connected to the operation member.

According to the present invention, in the above structure, the operating block slid by being urged by a spring force is provided in the casing so as to slide leftward, rightward, forward and backward, or up and down. A cam stopper for holding the operating block storing the force at the standby position is disposed on the casing along a sliding direction of the block.

[0010]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 is a front perspective view showing a state of a weight attached to a casing in the automatic lock release mechanism of the present invention, FIG. 2 is a perspective view from the rear of the casing showing an arrangement state of an operation block and a cam stopper in the casing, FIG. 3 is a perspective view of an example in which an example of the release mechanism of the present invention is applied to an example of a lock mechanism of a manual moving shelf,
3 is a front view of FIG. 3, and FIG. 5 is a perspective view of a main part in which another example of the release mechanism of the present invention is applied to another lock mechanism.

In FIG. 1 and FIG. 2, reference numeral 1 denotes a box-shaped casing having an open front surface and upper and lower surfaces, and 2 a back plate 1a in the casing and a back plate 1a via a rod 2b by a horizontal shaft 2a. The weight is suspended so as to swing automatically in parallel, and is formed as a linear cam 2c with a front surface protruding here.

Reference numeral 3 denotes a mounting member mounted on the front surface of the casing 1 for accommodating and guiding the operation block 4 and mounting a cam stopper 7. The member 3 includes left and right pieces 3a and 3b formed of a casing. The left and right side surfaces 1b, 1c of 1 are attached to the casing 1 and integrated therewith.

In FIG. 2, an operation block 4 is formed of a member having a laterally concave cross section, and holes 4 are formed in upper and lower pieces.
a and 4b are formed, and a horizontally long hole 4c is formed in the front piece. The block 4 is slidably mounted on the back surface of the mounting member 3 by an L-shaped guide fitting 6. 6a is a guide pin for attaching the guide fitting 6 to the front plate 3c of the attachment member 3 through the slot 4c of the block 4;
Is a screw for attaching the guide fitting 6 to the side piece 3a of the attachment member. Thereby, the operation block 4 is attached to the mounting member 3.
Is slidably held along the length direction of the mounting member 3 on the back side of the mounting member 3.

In FIG. 2 and FIG. 3, numeral 7 designates a position around the shaft 7c by being positioned below the operation block 4 and pivotally mounted on a lower plate 3d of the mounting member 3 by a shaft 7c passing through the hole 5. The tip 7a (right end in FIG. 2) of the stopper 7 is fitted into and removed from a hole 4b below the operation block 4 by the swinging motion. The rear end 7b of the stopper 7 is connected to the side plate 1c of the casing 1.
Is exposed to the outside of the casing 1 through a vertically long hole 1d provided in the casing 1. A weak spring 8 acting downward is connected to the rear end 7b of the cam stopper 7, and constantly biases the distal end 7a of the stopper 7 upward. Reference numeral 8a denotes a screw for adjusting the spring force of the spring 8, and a bracket for the side plate 1c of the casing 1 is provided.
It is screwed on 8b.

With this configuration, the tip 7a of the cam stopper 7
Is inserted into the hole 4b below the operation block 4, the operation block 4 is prevented from sliding, and when the tip 7a of the stopper 7 is separated from the hole 4b, the operation block 4 slides along the mounting member 3. Will be possible.

Reference numeral 9 denotes a spring for pulling the operation block 4 in the sliding direction. In this example, two springs are stretched between the side plates 1c of the casing 1 of the block 4. Therefore, when the operation block 4 is positioned at the right end of the operation member 3 against the tension of the spring 9 and the tip 7a of the cam stopper 7 is fitted into the hole 4b, the block 4 engages the spring 9 by the locking action of the stopper 7. It is held at this position (standby position) in a tensioned state, that is, a state in which spring force is stored. The cam stopper 7 in this state is rotated clockwise about the shaft 7a (FIG. 2).
When the turning is made, the tip 7a of the stopper 7 is detached from the hole 4b of the operating block 4, so that the operating block 4 slides to the left in FIG. The cam stopper 7 that operates as described above is positioned on the front side of the weight 2 described above, and when the weight 2 swings,
A straight cam 2c provided on the front surface of the cam stopper 7 comes into contact with the lower surface of the cam stopper 7 on the left side of the shaft 7a (see FIG. 2) to lift the stopper 7 and cause the stopper 7 to make a clockwise (FIG. 2) angular rotation. It has become. As described above, the automatic lock release mechanism is formed.

According to the present invention, when the operation block 4 is held at the standby position by the cam stopper 7 and the tip 7a of the stopper 7 comes off the hole 4b, the block 4 slides vigorously by the spring force. The lock state of the lock mechanism is automatically released by transmitting the lock and unlock operation members in the lock mechanism of the movable shelf. For this purpose, the force for removing the tip 7a of the stopper 7 from the hole 4b is obtained from the weight 2 described above, and this point will be described below.

The casing 1 in which the automatic unlocking mechanism described with reference to FIGS. 1 and 2 is housed is provided with a locking mechanism for the lock mechanism in a handle-turnable moving shelf illustrated in FIGS.
Since the operation member is arranged adjacent to the unlock operation member and is connected to the operation block 4, this point will be described below.

First, the shelf locking mechanism will be described with reference to FIGS. 3 and 4, the lock mechanism R
Is mounted below the handle shaft sprocket 22, which is one of the rotating members in the transmission mechanism driven by the handle shaft 21 provided on the side wall of the moving shelf. A drive chain 23 is wound around the sprocket 22, and is wound around a sprocket connected to a traveling wheel (not shown). In addition, CT is a chain tensioner. 24 is a mounting plate for the lock mechanism,
It is mounted below the sprocket 22 inside the side wall of the moving shelf. Reference numeral 25 denotes a substantially U-shaped receiving plate as viewed from the side attached to the upper portion of the mounting plate 24. A sleeve 25c is mounted in holes provided in upper and lower projecting pieces 25a and 25b. A lock rod 26 is loosely inserted in the vertical movement free state within 25c.

The lock rod 26 is shaped such that its upper end 26a fits easily between the teeth of the sprocket 22 and is easily fitted. A pin 27 for pressing the spring 30 from above is provided in the middle of the lower half of the rod 26, while a vertically long hole 28 is formed at the lower end, and an end washer 29 is formed at the lower end of the long hole 28.
Is fixed with a pin 29a, and a seat 31 of a spring 30 is slidably inserted along the elongated hole 28 of the rod 26 above the washer 29.

32 is the rod 26 below the mounting plate 24.
Is a mounting frame that is mounted below the lower end of
An operation shaft 33 for performing lock and unlock operations is mounted horizontally. A cam plate 34 is mounted on the distal end side of the shaft 33 and substantially below the rod 26, and an operating knob for locking and unlocking is provided on the rear end of the shaft 33 (front side in FIG. 3). Alternatively, a handle (not shown) is attached. The shaft 33 has a prismatic shape except for a rotation bearing part by the mounting frame 32. Here, the cam plate 34
Of the rod 26 is connected to the elongated hole 28 at the lower end of the rod 26 by a connecting pin.
The cam plate 34 takes a horizontal posture (see reference numeral 34 'in FIG. 4) when not locked. In the lower half of the rod 26, a rod receiving plate
A spring 30a acting on the lower side of the rod 26 is inserted between the lower surface of the lower projecting piece 25b of the 25 and the upper surface of the pressing pin 27 of the spring 30.

In FIG. 4, the unlocked state is the rod
The tip 26a 'shown by the broken line 26 is not fitted between the sprocket teeth. Accordingly, when the operation shaft 33 is rotated 90 degrees clockwise by the operation knob (not shown) in FIG. 4, the cam plate 34 'is moved 90 degrees from the position of the chain line in FIG. 2 to the position of the cam plate 34 indicated by the solid line in FIG. Stand up. The cam plate 34
When the connecting pin 35 rises 90 degrees, the distal end side of the connecting pin 35 slides in the elongated hole 28 provided at the lower end side of the rod 26 to move upward, and acts to compress the spring 11 from below through the receiving seat 31.

The spring 30, which receives a compressive force from below,
It works to push up the holding pin 27 of the spring 30 at the upper end side, so the lock rod integrated with this pin 27
26 rises overcoming the repulsive force of the spring 30a, and the tip 26a of the rod 26 fits between the teeth of the sprocket 22 to be locked.

The above-mentioned locked state is normally released only when the operation shaft 33, which is a rotating shaft, is rotated counterclockwise by 90 degrees. However, when the movable shelf is locked, vibration due to an earthquake or the like is caused by the movement direction of the shelf. As described above, there is a high possibility that the luggage in the moving shelf will jump out or fall over when receiving the data. In the present invention, the operation shaft 33 of the lock mechanism in the above-mentioned locked state is forcibly rotated to the unlock side by utilizing the operations of the weight 2 and the operation block 4 of the unlock mechanism described above. Hereinafter, this point will be described.

In FIGS. 3 and 4, reference numeral 36 denotes a connecting member for connecting the operating block 4 to the operating shaft 33. In this case, the upper end is connected to the prism of the operating shaft 33, and the shaft 33
The lower end is formed in a claw 36b that engages with the upper hole 4a of the operation block 4 while being formed on a square cylindrical shaft grip 36a so as to rotate integrally with the shaft. With this configuration of the connecting member 36,
The operation block 4 of the automatic lock release mechanism and the operation shaft 33 of the lock mechanism R are connected for releasing the lock.

The above is an example of the embodiment in which the automatic lock release mechanism of the present invention is applied to an example of the lock mechanism R engaged with the rotating member of the transmission mechanism in the movable shelf. And FIG.
2 shows a state in which the operation lock 4 is set to the standby position.

In the state shown in FIG. 3, when the movable shelf is subjected to vibration such as an earthquake, the weight 2 swings left and right. In the right stroke of the swing of the weight 2, when the upper surface of the cam 2c protruding from the front surface hits the lower surface of the cam stopper 7 and pushes it up, the stopper 7 moves around the shaft 7a, as shown in FIGS.
Then make a corner turn in the counterclockwise direction.

When the stopper 7 is turned angularly by the action of the weight 2, the tip 7a of the stopper 7 is disengaged from the hole 4b below the actuating block 4, and the actuating block 4 freed by the disengagement of the stopper 7 is a spring. With the force of 9, the vehicle is driven to the right in FIGS. When the operating block 4 moves rightward by the spring force in this manner, the connecting member 36 engaged with the hole 4a on the block 4 is counterclockwise integrated with the operating shaft 33 integrally with the operating shaft 33. The angle is turned.

As described above, when the operating shaft 33 makes an angular turn in the counterclockwise direction in FIG. 4 by the action of the connecting member 36, the connecting point of the connecting pin with the cam plate 34 is changed to the action line of the spring 30 in the lock rod 26. Is exceeded, the cam plate 34 falls to the unlock position by the spring force acting downward of the spring 30,
Thereby, the tip 26a of the lock rod 26 is lowered to the position 26a 'shown by the broken line in FIG. 4, and the unlocked state is automatically realized.

In the above embodiment, the operating block 4 is operated in the left-right direction when the casing 1 is viewed from the front (in the example shown in FIG. However, in the automatic lock release mechanism of the present invention, the operating member 4 can be made to stand by and run in the front-rear direction of the casing 1.

In order to operate the operation block 4 in the front-rear direction of the casing 1, for example, the mounting member 3 serving as an operation guide of the block 4 or a member having the same function is attached to the side wall 1b or 1c of the casing 1. The block 4 and the spring 9 are provided in parallel, and the cam stopper 7
Is pivotally mounted on the shaft 7c in the same manner as in the previous embodiment, but its tip 7a may be bent in parallel to the running direction of the block 4. In this way, the hanging posture of the weight 2, the vibration direction, and the latter half of the cam stopper 7 excluding the tip 7a can be the same as in the previous embodiment. Even when the cam stopper 7 is oriented parallel to the running direction of the operation block 4 and the shaft 7c is pivotally attached to the side surface of the casing 1, the rear end of the stopper 7
If the side 7b is bent parallel to the vibration direction of the weight 2, the same operation as described above can be obtained.

As described above, the operating block 4 is connected to the casing 1
The automatic block release mechanism of the present invention, which is operated in the front-rear direction, can be applied to, for example, a lock mechanism R 'of a movable shelf as illustrated in FIG. In FIG. 5, reference numeral 40 denotes a lock wheel provided separately from a sprocket on a handle shaft 41 or the like connected to a traveling wheel, and a large number of lock holes 40a are provided at an equal pitch on the outer periphery of the wheel 40. 42
The lock rod 43 prevents the rotation of the wheel 40 when the bent tip 42a penetrates into the lock hole 40a, and the lock rod 43 penetrates the tip 42a of the lock rod 42 into and out of the lock hole 40a. A rod support frame that supports the lower end of the rod 42 with a fulcrum shaft 45 and supports the operation shaft 44 so that the operation shaft 44 can be moved back and forth.The operation shaft 44 is orthogonal to the rod 42 and An operation knob (not shown) is provided in front of the shaft 44 in a parallel direction. Although not shown, the lock mechanism includes a holder (not shown) for holding the lock rod 42 at the lock position and the unlock position.

With respect to the lock mechanism described above, the operation block 4
Is operated in the front-rear direction of the casing 1.
The position of the spring 9 and the position of the tip 7a of the cam stopper 7 are arranged so as to be aligned with the lock position of the rod 42, and the claw-shaped portion is provided in the hole 4a on the operation block 4 at this position.
The intermediate part 36c of the connecting member 36 'engaged with 36b'
44 is supported by a shaft 36d orthogonal to the horizontal plane, and the upper end 36a '
Is connected to the lower end of the rod 42 by a shaft 36f passing through an elongated hole 36e, thereby providing an automatic unlocking mechanism.

In the above embodiment, the lock release mechanism of the present invention is arranged in such a direction that the weight 2 swings along the moving direction of the movable shelf, and the operating block 4 is operated by the operating member of the lock mechanism of the movable shelf. The lock release mechanism of the present invention is mounted on the movable shelf in a posture in which the weight 2 swings in a direction orthogonal to the moving direction of the movable shelf, and the lock release mechanism of the present invention , And the operation block 4 can be connected and provided.

[0035]

The present invention is as described above. An automatic lock release mechanism is provided in a casing so as to be swingably suspended, and a weight having an operation surface formed at an appropriate portion, and a spring force. A stopper for holding the operating block connected to the lock operation member of the lock mechanism at a standby position against the spring force, and for swinging the weight. A cam stopper for receiving and releasing the holding posture of the block is provided as a unit, and the casing is mounted adjacent to an operating member in a lock mechanism of a moving shelf, and the block is connected to the operating member. Therefore, there is an advantage that even if the structure of the lock mechanism is different, it can be applied and mounted almost as it is.

Further, since the lock release mechanism is unitized, the present invention mechanism can be easily applied and mounted even with an existing movable shelf with little modification. is there.

[Brief description of the drawings]

FIG. 1 is a front perspective view showing a state of a weight attached to a casing in an automatic lock release mechanism of the present invention.

FIG. 2 is a perspective view from the rear of the casing showing an arrangement state of an operation block and a cam stopper in the casing.

FIG. 3 is a perspective view of an example in which an example of the release mechanism of the present invention is applied to an example of a lock mechanism of a manual moving shelf.

FIG. 4 is a front view of FIG. 3;

FIG. 5 is a perspective view of a main part in which another example of the release mechanism of the present invention is applied to another lock mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casing 2 Weight 3 Mounting member 3a, 3b Left and right side pieces 3c Front plate 4 Operating block 4a, 4b Upper and lower holes 4c Horizontal hole 5 Mounting hole for cam stopper 7 Guide metal 6a Guide pin 6b Screw 7 Cam stopper 7a Tip of stopper 7b Rear end of stopper 7c Shaft 8 Spring that acts downward 9 Spring that acts in the sliding direction 21 Handle shaft 22 Sprocket 23 Drive chain 24 Mounting plate 25 Receiving plate 25a, 25b Projection piece 25c Sleeve 26 Lock rod 27 Pin 28 Vertical hole 29 End washer 30 Spring 31 Seat 32 Mounting frame 33 Shaft 34 Cam plate

Claims (2)

(57) [Claims] 1. A weight which is suspended in a casing so as to be swingable and has an appropriate portion formed on an operation surface, slides by being urged in one direction by a spring force, and locks by a lock mechanism. An operation block connected to an operation member; and a stopper for holding the operation block at a standby position against the spring force, the cam stopper being used for swinging the weight and releasing the operation block from a holding position. And the casing is attached to an operating member of a lock mechanism that is disposed in a vertical plane orthogonal to the axis of the rotating member in the transmission mechanism of the moving shelf and that is arranged to engage with the rotating member. An automatic lock release mechanism for a moving shelf, wherein the mechanism is mounted adjacently and the operation block is connected to the operation member. 2. An operating block which is urged by a spring force and slides provided in a casing so as to slide leftward, rightward, forward and backward, or up and down, and stores the spring force. The automatic lock release mechanism for a movable shelf according to claim 1, wherein the cam stopper for holding the cam at a standby position is disposed on the casing along a sliding direction of the block.