JPS5828128Y2 - door lock - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of a pull lever set door lock.

As is known, pull-lever door locks can be either equipped with a hook or equipped with a latch.

The above-mentioned hook-type door lock has an integrated hook and its operating lever, and in the case of this door lock, basically all that is needed is a member that pivots the lever and a spring, making the construction extremely simple. However, after the door is unlocked, when the door is closed and returned to the locked state, that is, when the hook engages with a hanging device such as a striker, the lever that is integrated with the hook responds, and every time the door is closed, the lever accompanies unnecessary movement.

On the other hand, in the case of a door lock equipped with a latch, the latch and lever are formed independently of each other, so when the door is locked when the door is closed, the lever does not react unnecessarily, which is convenient. These storage boxes are necessary to store the latches so that they can come and go, and the springs that give them elasticity, so the structure becomes bulky and bulky.
This complicates the process and the storage box protrudes from the surface of the door, which impairs the appearance of the door.

The present invention eliminates the disadvantages of both types of door locks and retains only the advantages.

The drawings showing the embodiments of the present invention will be described in detail below.
In the figure, the door lock is composed of separate and independent main members: a base 1, a lever 2, and a hook 3.

The pedestal 1 is formed into a plate shape made of, for example, hard plastic, and has a through-shaped mounting hole 4 near its negative end, and pairs of mounting holes 4 are formed from the front and back edges of the mounting hole 4, respectively. The brackets 5, 5 and the leg portions 6, 6 are integrally provided facing each other.

Further, a mounting leg 7 with a screw hole 7a is integrally protruded approximately at the center of the back surface, and a mounting hole 9 formed through the door 8 is provided.
and 10, fit the leg parts 6, 6 and the mounting leg 7, and screw the set screw 11 inserted into the mounting hole 10 from the inside of the door 8 into the tapped hole 7a of the mounting leg 7 to complete the pedestal. 1 is fixed to the surface of the door 8.

Further, the fixing of the pedestal 1 to the door 8 is not limited to the above-mentioned mounting legs 7 and set screws 11, but can also be done by penetrating a mounting hole (not shown) in the pedestal 1 and screwing.

The lever 2 is made of, for example, hard plastic and has a substantially U-shaped side surface, and one end thereof is formed as an opening 12a on the inside of the box-shaped base end 12, and the outside end is formed as an opening 12a on the inside. A locking piece 12b extending inward and having a width that can be installed in the mounting hole 4 of the pedestal 1 is integrally provided, and the box-shaped base end 12 is attached to the rim of the mounting hole 4. The brackets 5, 5 can be superposed on top of each other, and are formed in a size that allows the brackets 5, 5 to be installed internally.

Further, the hook 3 is made of, for example, hard plastic.
A bent hooking part 3a at the tip and mounting legs 3b, 3b at the base end.
It is integrally molded into a U-shaped cross section with desired spacing.

Further, the mounting legs 3b, 3b are provided at a distance that allows them to be inscribed in the brackets 5, 5 on the pedestal 1.

Thus, the box-shaped base end 12 of the lever 2 is mounted on both brackets 5, 5 of the pedestal 1, while the hook 3 is mounted on the mounting hole 9 of the door 8.
The mounting legs 3b, 3b are inserted between the legs 6, 6 of the pedestal 1 into the mounting hole 4, and further between both brackets 5, 5, and the box-shaped base end 12, the bracket 5, 5,
The lever 2 and the hook 3 are rotatably connected to the mounting legs 3b, 3b by a pivot 13, and one end of a spring 14 externally disposed on the pivot 13 is hooked to the base 1,
The other end is hooked to the hook 3, and the elasticity of the spring 14 is applied to the hook 3 as a locking force to the striker 16 attached to the mounting frame 15 of the door 8 and a return force of the lever 2. There is.

If the hook 3a of the hook 3 and the outer circumferential surface of the striker 16 are formed on inclined surfaces 3a' and 16a, respectively, as shown in the illustration, then when the door is opened, both the inclined surfaces 3'a , 16a, the hook 3 rotates clockwise in FIG. 2 against the elastic force of the spring 14, and the door can be locked without operating the lever 2 by opening the door. can.

In the above configuration, the hook 3 is elastically urged in the counterclockwise direction in FIG. and the door is locked.

At this time, since the locking piece 12b of the lever 2 rotatably locks the hook 3, the locking force of the hook 3 by the spring 14 is applied to the hook 3 counterclockwise around the pivot 13 as a rotational fulcrum. As a result, the lever 2 is held seated on the base 1.

When the lever 2 is pulled in the direction of opening the door in the door lock state, it rotates clockwise about the pivot 13 and enters the state shown by the two-dot broken line in FIG.
b presses the hook 3, so the hook 3 rotates clockwise against the repulsive force of the spring 14, and the striker 16 is released, and the door 8 is unlocked at the same time. The door is opened by pulling the lever 2.

As explained above, the door lock of the present invention includes a base 1 fixed to the door 8, a hook 3 removably corresponding to the striker 16 fixed to the mounting frame 15 side of the door 8, and a hook 3 for operating the hook. The pedestal 1 is provided with a mounting hole 4 and a lever 2 adjacent to the mounting hole 4.
A pair of brackets 5.5 are provided on the front side of the pedestal 1, and a pair of legs 6, 6 are provided on the back side of the pedestal 1, respectively.
One end of the lever 2 has a concave box-shaped base end 12, and the front edge of the box-shaped base end 12 has a mounting hole 4 of the base 1.
A locking piece 12b is formed with a width smaller than that of the locking piece 12b.
The tip of the hook 3 protrudes toward the back side of the pedestal 1, and its base end passes through the mounting hole 4 of the pedestal 1 while being interposed between both legs 6, 6 and both brackets 5, 5, and the lever 2
The box-shaped base end 12b is placed over both brackets 5, 5 on the surface side of the pedestal 1, and the locking piece 12b of the box-shaped base 12 is attached to the pedestal in such a way that it can freely engage with the base end of the hook 3. A pivot shaft 13 is attached to the base ends of these hooks 3, the box-shaped base end 12 of the lever 2, and both brackets 5, 5, and a pivot shaft 13 is attached to the hook 3 in the hooking direction. A spring 14 for applying force is wound around the outer periphery of the pivot shaft 13 and is brought into contact with the hook 3 thereof.

Therefore, in the case of the present invention, by pulling the lever 2 in a predetermined direction, the hook 3 can be removed from the striker 16 via the locking piece 12b of the box-shaped base end 12. 8 is closed and returned to the locked state again, that is, when the hook 3 engages the striker 16, only the hook 3 responds, and the lever 2, which is separate from the hook 3, does not operate. There is no need for the lever 2 to move unnecessarily every time the door 8 is closed.

Furthermore, since the lever 2 and the hook 3 are independent of each other in the hook type, the lever 2 and the hook 3 are independent of each other as described above.
No special members (for example, a latch guide storage box in a latch type) are required to eliminate unnecessary movements of the door 8. Therefore, the bulk and complexity of the structure can be avoided. Since only the lever 2 and lever 2 are present, the appearance can be kept good.

Furthermore, if the lever 2 and hook 3 are integrated and have a long length, breakage tends to occur, but if the lever 2 and 3 are independent and short as described above, such breakage will occur. Problems are unlikely to occur, and even if doors of various thicknesses are to be accommodated, it is only necessary to replace the hook 3 according to the thickness, and there is no unreasonable need to replace the entire hook.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a door lock and latch according to the present invention, Fig. 2 is a vertical cross-sectional view showing the door lock state when the door lock is in use, and Fig. 3 is a third perspective view of the door lock in Fig. 2. 4 is a sectional view taken along the line IV--IV in FIG. 2, and FIG. 5 is a perspective view of the pedestal in the door lock. 1...Pedestal, 2...Lever, 3...
...Hook, 4...Mounting hole of pedestal, 5...
...Bracket, 6...Leg, 8...
・Door, 12...Lever's box-shaped base end, 12 b
...Locking piece, 13... Pivot, 14...
... Spring, 15 ... Mounting frame, 16.
...Strike.

Claims (1)

[Scope of utility model registration request] It comprises a pedestal fixed to the door, a hook removably corresponding to the striker fixed to the mounting frame side of the door, and a lever for operating the hook, and the pedestal is provided with a mounting hole. At the same time, a pair of brackets protrudes from the front surface of the pedestal in proximity to the mounting hole, and a pair of legs protrudes from the back surface of the pedestal, and one end of the lever has a concave box-shaped base end. At the same time, a locking piece having a width smaller than the mounting hole of the pedestal is formed on the front edge of the box-shaped base end,
The tip of the hook protrudes to the back side of the pedestal, and its base end passes through the mounting hole of the pedestal between both legs and brackets, and the box-shaped base end of the lever protrudes from the front side of the pedestal. The locking piece at the box-shaped base end is inserted into the mounting hole of the pedestal so that it can freely engage with the base end of the hook. A door lock in which a pivot shaft is attached to the base end and both brackets, and a spring for imparting elastic force in the locking direction to the hook is wound around the outer circumference of the pivot shaft and abuts on the hook.