CN213015859U - Three-point linkage lock - Google Patents

Abstract

The utility model provides a three point linkage tool to lock, it just can carry out the unblock to it need two different keys to adopt behind this kind of tool to lock. The lock comprises a panel, wherein the outer side surface of the panel is rotatably connected with a handle through a connecting rod, the inner side surface of the panel is connected with a tongue rod in a sliding manner, one end of the tongue rod is connected with a middle lock tongue, and the other end of the tongue rod is connected with a baffle; the tongue pole is equipped with the fixture block, the fixture block passes the panel and contacts with the handle, the tongue pole another side is equipped with the connecting block, the connecting block is located the connecting hole of first lock fork and second lock fork, first lock fork and second lock fork rotate the upper and lower end of connecting at the panel medial surface respectively, first lock fork and second lock fork pass through reset spring and connect, it still includes first manual tool to lock and the manual tool to lock of second, first manual tool to lock and the manual tool to lock of second are corresponding to two different keys, first manual tool to lock and the manual tool to lock of second are connected with first dog and second dog respectively, when first manual tool to lock and the manual tool to lock of second, first dog, second dog support the baffle.

Description

Three-point linkage lock

Technical Field

The utility model relates to a tool to lock technical field specifically is a three point linkage tool to lock.

Background

Explosion-proof cabinet, danger article cabinet etc. generally adopt three-point linkage lock to ensure the steadiness because need deposit important device or dangerous article can not open at will, three-point linkage lock makes through three spring bolts from top to bottom keep locking between cabinet door and the cabinet body.

At present, in order to further improve the safety of these cabinets, many enterprises require that the cabinet door can only be opened when two people who hold different keys unlock, and need design a three-point linkage tool to lock for this reason and satisfy above-mentioned requirement.

SUMMERY OF THE UTILITY MODEL

To the problem, the utility model provides a three point linkage tool to lock, it just can carry out the unblock to it need two different keys after adopting this kind of tool to lock.

The technical scheme is as follows: a three-point linkage lock comprises a panel, wherein one surface of the panel, which is positioned on the outer side of a cabinet body, is an outer side surface, one surface of the panel, which is positioned on the inner side of the cabinet body, is an inner side surface, the outer side surface is rotatably connected with a handle through a connecting rod, the inner side surface is connected with a tongue rod in a sliding manner, one end of the tongue rod is connected with a middle lock tongue, and the other end of the tongue; the one side of tongue pole orientation lateral surface is equipped with the fixture block, the fixture block passes the panel with the handle contact, the tongue pole another side is equipped with the connecting block, the connecting block is located the connecting hole of first lock fork and second lock fork, first lock fork with the second lock fork rotates respectively to be connected the upper and lower end of panel medial surface, first lock fork with the second lock fork passes through reset spring and connects, first lock fork with the second lock fork is connected its characterized in that with upper portion spring bolt and lower part spring bolt respectively: the novel lock is characterized by further comprising a first manual lock and a second manual lock which penetrate through the panel respectively, wherein the first manual lock and the second manual lock correspond to two different keys respectively, a key hole of the first manual lock and a key hole of the second manual lock are located on the outer side face of the panel respectively, one end, located on the inner side face of the panel, of the first manual lock and one end, located on the inner side face of the panel, of the second manual lock are connected with a first stop block and a second stop block respectively, the length of the first stop block and the length of the second stop block are corresponding to the distance between the baffle and the manual lock when the handle is not rotated, and when the first manual lock is locked by the second manual lock, the first stop block and the second stop block abut against the baffle.

It is further characterized in that:

the tongue rod is positioned in the connecting cavity; the connecting plate is also provided with a limiting hole, and the connecting block passes through the limiting hole;

the first manual lock adopts a GA lock cylinder.

The utility model has the advantages that: when needing the unblock, only through first manual tool to lock of two different keys difference unblocks and the manual tool to lock of second, make first dog and second dog no longer support the baffle, pull the handle again and drive the tongue pole and remove, relieve the locking of middle part spring bolt, drive the locking of first lock fork and second lock fork rotation through the connecting block simultaneously and relieve the locking of upper portion spring bolt and lower part spring bolt respectively, realize the unblock.

Drawings

FIG. 1 is an exploded view of the outer side of the present invention;

FIG. 2 is a view showing the inner side surface structure of the present invention (locked state);

FIG. 3 is a three-dimensional structure view of the inner side surface of the present invention (unlocked state; without a return spring);

fig. 4 is a structure view of the tongue bar.

Detailed Description

As shown in fig. 1-4, the three-point linkage lock comprises a panel 1, one side of the panel 1, which is positioned outside the cabinet, is an outer side surface 1-1, one side of the panel 1, which is positioned inside the cabinet, is an inner side surface 1-2, the outer side surface 1-1 is rotatably connected with a handle 3 through a connecting rod 2, the inner side surface 1-2 is slidably connected with a tongue rod 4, one end of the tongue rod 4 is connected with a middle lock tongue (not shown in the figure), and the other end is connected with a baffle 5; one surface of the tongue rod 4 facing the outer side surface 1-1 is provided with a clamping block 4-1, the clamping block 4-1 passes through the panel 1 to be contacted with a convex block 3-1 of the handle 3, the other surface of the tongue rod 4 is provided with a cylindrical connecting block 4-2, the connecting block 4-2 is positioned in a connecting hole 8 of a first lock fork 6 and a second lock fork 7, the first lock fork 6 and the second lock fork 7 are respectively and movably riveted at the upper end and the lower end of the inner side surface 1-2 of the panel 1, the first lock fork 6 and the second lock fork 7 are connected through a return spring 8, the return spring 8 can be an arc-shaped spring piece or an arc-shaped elastic steel wire, the first lock fork 6 and the second lock fork 7 are respectively hinged with an upper lock tongue and a lower lock tongue (not shown in the figure), the connecting plate 9 is positioned on the inner side surface 1-2 of the panel 1, a connecting cavity, the tongue rod 4 is positioned in the connecting cavity 9-1 so as to be connected in a sliding way; a limiting hole 9-2 is further formed in the connecting plate 9, and the connecting block 4-2 penetrates through the limiting hole 9-2; the anti-theft lock further comprises a first manual lock 10 and a second manual lock 11 which are respectively arranged by penetrating through the panel 1, wherein the first manual lock 10 adopts a GA lock cylinder, the GA lock cylinder is a lock cylinder meeting the GA/T73-94 standard of mechanical anti-theft locks, and has the functions of drilling prevention, sawing prevention and prying prevention, safety and anti-theft performance, the first manual lock 10 and the second manual lock 11 respectively correspond to two different keys, the key holes of the first manual lock 10 and the second manual lock 11 are respectively positioned on the outer side surface 1-1 of the panel 1, one ends of the first manual lock 10 and the second manual lock 11, which are positioned on the inner side surface 1-2 of the panel 1, are respectively connected with a first stop block 10-1 and a second stop block 11-1, the lengths of the first stop block 10-1 and the second stop block 11-1 correspond to the distance between the baffle 5 and the manual locks when the handle 3 is not rotated, when the first manual lockset 10 and the second manual lockset 11 are locked, the first stop block 10-1 and the second stop block 11-1 are pressed against the baffle 5.

When the device is unlocked, the baffle 5 is limited by the stop block to move, the handle 3 cannot be pulled, when the device is unlocked, two different keys are needed to unlock the first manual lock 10 and the second manual lock 11, the first stop block 10-1 and the second stop block 11-1 are controlled to rotate so as not to stop the baffle 5, therefore, when the handle 3 is pulled outwards, the lug 3-1 at the end part of the handle 3 drives the clamping block 4-1 to move towards the direction of the manual lock, and further drives the tongue rod 4 to move in the same direction, so that the middle tongue is retracted, the tongue rod 4 drives the first lock fork 6 and the second lock fork 7 to rotate through the connecting block 4-2, so that the end part of the first lock fork 6 moves downwards, the end part of the second lock fork 7 moves upwards, so that the upper tongue and the lower tongue of the tongue retract, unlocking is realized, and after the handle 3 is loosened, the lock forks are reset under the action of the, and then drives the tongue rod 4 to reset, and in addition, a torsion spring can be additionally arranged between the handle 3 and the panel 1 according to the requirement. The requirement that dangerous chemicals, important device need satisfy double lock are kept to the stage in line with now, and two dogs carry out spacing better improvement the steadiness of tool to lock 5 baffle when locking state simultaneously.

The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (3)

1. A three-point linkage lock comprises a panel, wherein one surface of the panel, which is positioned on the outer side of a cabinet body, is an outer side surface, one surface of the panel, which is positioned on the inner side of the cabinet body, is an inner side surface, the outer side surface is rotatably connected with a handle through a connecting rod, the inner side surface is connected with a tongue rod in a sliding manner, one end of the tongue rod is connected with a middle lock tongue, and the other end of the tongue; the one side of tongue pole orientation lateral surface is equipped with the fixture block, the fixture block passes the panel with the handle contact, the tongue pole another side is equipped with the connecting block, the connecting block is located the connecting hole of first lock fork and second lock fork, first lock fork with the second lock fork rotates respectively to be connected the upper and lower end of panel medial surface, first lock fork with the second lock fork passes through reset spring and connects, first lock fork with the second lock fork is connected its characterized in that with upper portion spring bolt and lower part spring bolt respectively: the novel lock is characterized by further comprising a first manual lock and a second manual lock which penetrate through the panel respectively, wherein the first manual lock and the second manual lock correspond to two different keys respectively, a key hole of the first manual lock and a key hole of the second manual lock are located on the outer side face of the panel respectively, one end, located on the inner side face of the panel, of the first manual lock and one end, located on the inner side face of the panel, of the second manual lock are connected with a first stop block and a second stop block respectively, the length of the first stop block and the length of the second stop block are corresponding to the distance between the baffle and the manual lock when the handle is not rotated, and when the first manual lock is locked by the second manual lock, the first stop block and the second stop block abut against the baffle.

2. The three-point linkage lock according to claim 1, characterized in that: the tongue rod is positioned in the connecting cavity; the connecting plate is further provided with a limiting hole, and the connecting block penetrates through the limiting hole.

3. The three-point linkage lock according to claim 1, characterized in that: the first manual lock adopts a GA lock cylinder.

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