JPH0211573Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a locking device used to tighten and lock two objects together, such as a cabinet body and its door. be.

[Prior Art] The locking device disclosed in Publication of Utility Model Publication No. 51-46232 is such that the base end of the operating plate is pivoted to the upright part of the mounting plate fixed to one object by means of a fixed pivot. The base end of a rectangular ring-shaped latch whose tip engages and disengages from a receiver provided on the other object is pivoted to the middle part of the operation plate by a movable pivot, and the tip of the latch In the locked state in which the latch is engaged with the receiver, the movable pivot moves a straight line passing through the tip of the latch and the fixed pivot to the object 9.
The latch attracts one object to the other by virtue of its inherent elasticity which tends to reduce the distance between the distal end and the proximal end.

In this conventional device, the clamping between the latch and the receiver is released by rotating the operating plate around the fixed pivot in a direction away from the front of the object to be clamped, and the latch is flipped up around the movable pivot. When the tip of the latch is detached from the receiver and the finger is released from the operation plate, the operation plate rotates in the opposite direction due to its own weight and comes into contact with the front of the object, but the latch is held in the flip-up position. Since there is no means to do this, the latch also hangs down and rotates under its own weight, causing it to come into contact with the front of the object.

Therefore, when closing one object to the other and tightening and locking the two again,
The latch hanging down and in contact with the front of the object had to be lifted up once and then engaged with the receiver separately from the rotation operation of the operation plate, making the tightening and locking operations time-consuming.

[Problem to be solved by the invention] Therefore, the purpose of the invention is to make the tightening and locking operation smooth and simple without the need to lift the latch in advance separately from the rotating operation of the operation plate when tightening and locking. An object of the present invention is to provide a locking device.

[Means for Solving the Problems] The locking device of the present invention will be described below using reference numerals in the attached drawings. The proximal end 2a of the latch 5 is pivoted by the fixed pivot 3, and the proximal end 5a of the latch 5, whose tip hook 5c is engaged with and disengaged from the receiver 14 provided on the other object 15, is pivoted by the movable pivot 4. The base end 5 of the latch 5 is pivotally attached to the middle part of the operation plate 2.
A spring-loaded pin 6 is provided at a position farther from the fixed pivot 3 than the movable pivot 4, and the tip portion 2b of the operation plate 2
A spring hook pin 7 is provided at a position farther from the fixed pivot 3 than the spring hook pin 6, and a hook portion 8a at one end of a coil spring 8 curved convexly toward the back side of the operation panel 2 is fitted into the spring hook pin 7. , the other end hook portion 8b of the coil spring 8 is fitted into the spring hanging pin 6,
In the locked state in which the tip end hook portion 5c of the latch 5 is engaged with the receiver 14, the spring-loaded pin 7 is in a position beyond the straight line passing through the movable pivot 4 and the spring-loaded pin 6 toward the object 9, While the coil spring 8 is subjected to a tensile load, in the unlocked state where the end hook portion 5c of the latch 5 is detached from the receiver 14, the spring hook pin 7 moves a straight line passing through the movable pivot 4 and the spring hook pin 6 to the opposite side of the object 9. At the position beyond the side, the coil spring 8 receives a compressive load.

[Operation] After closing one object 9 with respect to the other object 15, turn the operation plate 2 around the fixed pivot 3 to engage the tip hook portion 5c of the latch 5 with the receiver 14, and then When the operating plate 2 is pushed down and rotated about the fixed pivot 3 toward the front of the object 9, the latch 5 rotates relative to the operating plate 2 about the movable pivot 4 and falls down, causing the base end of the latch 5 to fall down. As the portion 5a approaches the front of the object 9, the tip hook portion 5c engages deeply with the receiver 14.

As the operation plate 2 continues to be pressed down and rotated, as shown in FIG. 6, when the spring pin 7 crosses the straight line connecting the movable pivot 4 and the spring pin 6 toward the object 9,
Since the distance between the spring hook pin 6 and the spring hook pin 7 increases, the coil spring 8 receives a tensile load, but at this stage the latch 5 is firmly attracted and engaged with the receiver 14. The elastic repulsion force of the coil spring 8 corresponding to the tensile load acts as a force that urges the operating plate 2 to rotate in the counterclockwise direction around the movable pivot 4, and this rotational urging causes the operating plate 2 to rotate in the corresponding direction. It is held precisely in the tightened and locked position.

When the operation plate 2 is pulled up and rotated about the fixed pivot 3 as shown by the arrow in FIG. 6, the movable pivot 4
The latch 5, which is pulled by the proximal end 5a, rises and rotates around the distal end hook 5c.

When the operation plate 2 continues to be pulled up and rotated, and the spring-loaded pin 7 crosses the straight line connecting the movable pivot 4 and the spring-loaded pin 6 to the opposite side of the object 9, as shown in FIG. Since the distance between the spring hook pin 7 and the coil spring 8 is reduced, the coil spring 8 is subjected to a compressive load.
is detached from the support 14, the elastic repulsive force of the coil spring 8 corresponding to the compressive load is applied to the movable pivot 4.
The latch 5 acts as a force that rotates and biases the latch 5 in a counterclockwise direction around the center thereof, and the latch 5 is restrained in a position diagonally intersecting the operation plate 2 by this rotational bias.

When you release your hand from the operating panel 2, the operating panel 2 rotates in the opposite direction due to its own weight and falls in front of the object 9, but it is pulled by the movable pivot 4 and rotates together with the operating panel 2. The latch 5 is accurately held in a raised position with the distal end hook portion 5c facing diagonally upward due to the biasing of the coil spring 8.

[Embodiment] In the illustrated embodiment, one object 9 is a door, the other object 15 is a warehouse body, and a receiver 14
is fixed to the front panel of the cabinet body. Mounting plate 1
is fixed to the object 9 by a bolt and nut inserted into the small hole 1c of the base end 1b. The latch 5 is constructed by connecting two metal plates in parallel with connecting pins 10 and 11.

The spring hook pin 7 has a cylindrical body 12 at a certain interval,
The coil spring 8 is prevented from shifting by fitting the hook portion 8a at one end rotatably between the cylindrical bodies 12 and 12. A pair of cylindrical bodies 13, 13 are also fitted to the spring hanging pin 6, and the other end hook portion 8b of the coil spring 8 is rotatably fitted between the cylindrical bodies 13, 13.

As shown in FIG. 5, when the latch 5 rotates to the unlocked position diagonally crossing the operation plate 2, the latch 5 comes into contact with the end of the front plate of the operation plate 2, and the latch A stop shoulder 5b is provided to prevent further rotation of 5.

[Effect of the invention] As described above, the locking device of the invention has the mounting plate 1
The base end 2a of the operation plate 2 is pivotally connected to the upright part 1a of the operation plate 2 by a fixed pivot 3, and the base end 5a of the latch 5 is pivotally attached to the intermediate part of the operation plate 2 by a movable pivot 4. 5
A spring-loaded pin 6 is provided at a position farther from the fixed pivot 3 than the movable pivot 4 at the base end 5a of the operation panel 2, and a spring-loaded pin 6 is provided at a position farther from the fixed pivot 3 than the spring-loaded pin 6 at the tip end 2b of the operation plate 2. A pin 7 is provided, and the hook portion 8a at one end of the coil spring 8, which is curved convexly toward the back surface of the operation plate 2, is rotatably fitted to the spring hook pin 7, and the hook portion 8b at the other end of the coil spring 8 is fitted to the spring hook pin 7. 6, and the end hook portion 5c of the latch 5
In the unlocked state in which the spring is detached from the receiver 14, the spring hook 7 is in a position beyond the straight line passing through the movable pivot 4 and the spring hook 6 to the opposite side of the object 9, and the coil spring 8 receives a compressive load. The latch 5 rotates around the movable pivot 4 due to the elastic repulsive force of the coil spring 8 corresponding to the compressive load, and the latch 5 rotates around the movable pivot 4.
Since the latch 5 is accurately held in a raised position diagonally intersecting the operation plate 2, there is no need to lift the latch 5 in advance separately from the rotation operation of the operation plate 2 when tightening and locking the lock next time. Locking operation is performed smoothly and easily.

Further, a coil spring 8 installed between the spring hook pin 6 and the spring hook pin 7 and curved convexly toward the back side of the operating plate 2 serves as a means for stably holding the latch 5 in the locked position and serves as a means for stably holding the latch 5 in the locked position. Since it is also used as a means for holding the device in the flipped-up position, the structure of the entire device can be simplified and manufacturing and assembly costs can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a front view of a locking device according to an embodiment of the present invention, FIG. 2 is a rear view of the locking device, and FIG. 3 is a line A-A' in FIG. A cross-sectional view,
FIG. 4 is a right side view of the locking device. FIG. 5 is a longitudinal sectional view showing the locking device in the unlocked state, and FIG. 6 is a longitudinal sectional view showing the locking device in the locked state. DESCRIPTION OF SYMBOLS 1... Mounting plate, 1a... Standing part, 1b... Base end part, 2... Operation plate, 2a... Base end part, 2b... Tip part, 3... Fixed pivot, 4... Movable pivot, 5...
Latch, 5a... Proximal end, 5b... Stop shoulder, 5c
...Tip hook part, 6...Spring pin, 7...Spring pin, 8...Coil spring, 8a...One end hook part, 8b...Other end hook part, 9...One object, 10, 11... Connecting pin, 12, 13... Cylindrical body, 14... Receipt, 15... Other object.

Claims (1)

[Scope of utility model registration request] The base end 2a of the operation plate 2 is pivotally attached to the upright portion 1a of the mounting plate 1 fixed to one object 9 by means of a fixed pivot 3, and the tip hook is attached to the support 14 provided on the other object 15. Base end portion 5a of latch 5 to which portion 5c engages and disengages
is pivotally attached to the middle part of the operation plate 2 by a movable pivot 4, and a spring hook pin 6 is provided at the base end 5a of the latch 5 at a position farther from the fixed pivot 3 than the movable pivot 4,
A spring-loaded pin 7 is provided at the tip end 2b of the operation plate 2 at a position farther from the fixed pivot 3 than the spring-loaded pin 6,
The hook portion 8a at one end of the coil spring 8, which is curved convexly toward the back side of the operation plate 2, is fitted into the spring hook pin 7, and the hook portion 8b at the other end of the coil spring 8 is fitted into the spring hook pin 6, and the hook portion 8a at the other end of the coil spring 8 is fitted into the spring hook portion 6. In the locked state in which the tip end hook portion 5c is engaged with the receiver 14, the spring hook 7 is in a position beyond the straight line passing through the movable pivot 4 and the spring hook 6 toward the object 9, and the coil spring 8
is subjected to a tensile load while the tip hook portion 5c of the latch 5 is detached from the receiver 14 in the unlocked state.
When the spring-loaded pin 7 is in a position beyond the straight line passing through the movable pivot 4 and the spring-loaded pin 6 to the opposite side of the object 9,
A tightening locking device in which a coil spring 8 receives a compressive load.