JPH0446042Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a lock in which the latch head is retracted by pulling and pushing the operating member.

[Conventional technology]

To open the door, the lever or handle is rotated, the slider is pulled back, and the latch head is retracted.

[Problem to be solved by the invention] For locks in which the latch head is retracted by rotating the lever or the grip ball, it is necessary to move the lever or the grip ball in the direction of opening the door at the same time as the lever or the grip ball is rotated. This presses the latch head against the edge of the through hole in the receiving fitting.

This obstructs the smooth sliding of the latch head, making it impossible to open the door smoothly, especially when the door is opened in a hurry.

[Means for solving problems]

In order to solve the above problems, this invention attaches a seat plate on the inside and outside of the door at a position sandwiching the lock box, and a lever that rotates as the door is pulled is attached to the seat plate located on the side in the opening direction of the door. A lever is provided on the seat plate located on the opposite side of the opening direction of the door, which rotates when the door is pressed, and a front link and a rear link are provided at the front and rear of the lock box with their lower ends pivoted, respectively. The protrusion protruding forward from the lower end of the rear link is superimposed on the upper surface of the protrusion protruding rearward from the lower end, and the arm extending from the upper end of the rear link is engaged with the end of the slider, and both levers are The tip of the swinging piece provided to swing when operated is positioned between the front link and the rear link.

[Effect]

When one lever is pulled and the other lever is pushed, the swinging piece swings.

One of the swinging pieces engages with the rear link and pulls back the slider via the arm while tilting the rear link backward, so that the latch head retracts.

Also, the remaining swing piece engages with the front link and tilts the front link forward, so the rear link is tilted backward through the overlapping protruding pieces, and the swing piece engages with the front link and tilts the rear link backward through the overlapping protrusion. The latch head retracts while pulling back the slider.

〔Example〕

In the figure, reference numeral 1 denotes a lock box fitted and embedded inward from the vertical frame surface of door A, and a front plate 2 of this lock box 1 is provided with a through hole 3.

In addition, a front plate 2 is installed inside the lock box 1 by a spring 4.
A slider 5 that can move forward and backward to push in the direction of is incorporated, and a latch head 6 is provided at the tip of the slider 5.

In the case of the latch head 6, as shown in the figure, a protrusion 7 provided at the end of the latch head 6 and a protrusion 8 provided at the tip of the slider 5 are engaged with each other, and when the protrusion 8 is disengaged from the protrusion 7 as the slider 5 is pulled back, the latch head is removed. 6 is designed to be inverted and immersed, but it may be of a type that is not inverted.

The latch head 6 can be assembled by removing the front plate 2 and rotating it 180 degrees together with the cradle 9 having the protrusion 8.
Door A can be opened both outward and inward.

Furthermore, seat plates 10 and 11 are attached to the inner and outer surfaces of the door A at positions sandwiching the lock box 1, respectively.

Furthermore, through-holes 12 are provided in the two seat plates 10 and 11, and the base parts of the levers 13 and 14 are fitted into each of the through holes 12, and the base parts of the levers 12 and 13 into which the levers 12 and 13 are inserted are It is rotatably attached to the plates 10 and 11 via vertical pins 15 supported at both ends located above and below, respectively.

Note that the lever 13 on the release direction side (top side in FIG. 3) of door A is pulled from the solid line position in FIG. Push the button from the solid line position to the chain line position in the diagram, pull it, and release the push.
14, and is rotated back to its original position (solid line position in FIG. 3) by springs 16, both ends of which are engaged with seat plates 10 and 11, respectively.

In addition, in the front and back of the lower side of the slider 5 in the lock box 1,
A front link 18 and a rear link 19 are provided, each having a lower end pivotally supported by a pin 17. On the upper surface of a protruding piece 20 protruding from the lower end of the front link 18 toward the rear link 19, the rear link A projecting piece 21 that projects from the lower end of the link 19 toward the front link 18 overlaps with the projecting piece 21 .

Further, an arm 22 is provided that extends upward from the upper end of the rear link 19, and a pin 23 that projects in the horizontal direction is provided at the upper end of this arm 22.

Further, at the end of the slider 5, a long hole 24 is provided with both ends positioned in the slider direction of the slider 5, and the pin 23 passing through the long hole 24 and the edge of the long hole 24 come into contact with each other. Slide the slider 5 in the opposite direction of the latch head 6.

Furthermore, a horizontally elongated hole 25 is provided below the slider 5 on both side walls of the lock box 1 . Swing pieces 26 and 27 projecting from the bases of the levers 13 and 14 pass through them.

With the above configuration, when one of the swinging pieces 26 swings, the rear link 19 is pushed backward, the slider 5 is pulled back via the arm 22, and the remaining swinging piece 27 swings. Then, the front link 18 is pushed forward and the overlapping protrusions 2
The rear link 19 is pushed backward through the arms 0 and 21, and the slider 5 is pulled back through the arm 22.

〔effect〕

As mentioned above, according to the lock related to this invention,
As one lever is pulled, the rear link is pushed backwards via the swinging piece, and the slider is pulled back via the arm, and as the remaining lever is pushed, the front link is pushed forward via the swinging piece, causing the two to overlap. At the same time, the rear link is pushed backward by the projecting piece, and the slider is pulled back via the arm, so even if the swinging direction of the swinging piece changes due to the door opening outward or inward, the slider can be pulled back without any problem. be able to.

Therefore, it is possible to eliminate the inconvenience of manufacturing separate locks for opening the door inward and outward.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of the lock according to this invention, FIG. 2 is a partially cutaway side view of the lock in a state where the swinging piece is swung, and FIG. 3 is a cross-sectional plan view of the same. A...Door, 1...Lock box, 2...Front board,
3...Through hole, 4...Spring, 5...Slider, 6...
...Latch head, 7...Protrusion, 8...Protrusion, 9...
... cradle, 10, 11 ... seat plate, 12 ... through hole, 1
3, 14... Lever, 15... Pin, 16... Spring, 17... Pin, 18... Front link, 19...
... Rear link, 20, 21 ... Projection piece, 22 ... Arm, 23 ... Pin, 24 ... Long hole.

Claims (1)

[Scope of utility model registration request] In a lock in which the latch head at the end of the slider is retracted while the slider inside the lock box is pulled back by operating an operating member, a seat plate is installed at a position sandwiching the lock box on the inner and outer surfaces of the door, and a seat plate is installed on the door opening direction side. A lever that rotates when the door is pulled is provided on the seat plate located on the opposite side of the door opening direction, and a lever that rotates when the door is pushed is provided on the seat plate located on the opposite side of the door opening direction. A front link and a rear link are provided, each of which is pivotally supported, and a protruding piece that protrudes forward from the lower end of the rear link is superimposed on the upper surface of the protruding piece that protrudes rearward from the lower end of the front link. An arm extending from the upper end of the rear link is engaged with the end of the slider, and the tip of a swinging piece provided to swing when both levers are operated is placed between the front link and the rear link. A lock characterized by being positioned.