Emergency escape lock capable of achieving double-face unlocking and wedge-shaped block transmission

Abstract

The utility model relates to the technical field of locks, in particular to a double-face unlocking wedge-shaped block transmission emergency escape lock, which is characterized in that an unlocking shaft is arranged on a spring bolt, and one end of the unlocking shaft is of a conical structure; the wedge-shaped trigger block is mounted on a top plate at one end of the transmission shifting fork; the push rod unlocking shifting fork is rotationally installed on the other wing plate of the support and movably arranged outside the shell. A T-shaped arc-shaped end block is arranged on the push rod unlocking shifting fork; two side edges of the T-shaped arc-shaped end block are in movable contact with two inclined surfaces which are arranged on the transmission shifting fork side plate and are distributed in a V shape; the key shifting fork is rotationally installed on a waist plate of the support, one end of the key shifting fork is of a T-shaped structure, and second flat end faces on the two sides of the T-shaped structure are in movable contact with a first flat end face arranged on a transmission shifting fork bottom plate. The push rod unlocking shifting fork and the key shifting fork are adopted, the double-face unlocking function is achieved, the mechanical structure is simple, stability is high, unlocking is convenient, and the conditions of clamping stagnation and the like are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of locks, in particular to an emergency escape lock with a double-sided unlocking wedge block drive. Background Art

[0002] At present, for the fire escape door locks on the market, whether it is a single-point lock or a floor spring lock, the unlocking structure uses a lot of sheet metal and operates using the lever principle. Since the lever structure requires a very complex structure for unlocking in the three-dimensional direction, the more complex the mechanical structure, the worse the stability, resulting in frequent jams and non-unlocking situations during use. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an emergency escape lock with a double-sided unlocking wedge block drive for the defects and deficiencies of the prior art, which can effectively solve the above defects.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions: It includes a housing, a bracket, and a locking tongue; the bracket is in a "U" - shaped structure, the locking tongue is arranged in the notch of one of the wing plates of the bracket, and is rotatably installed on the mounting holes on both side walls of the notch by a rotating shaft. One side of the locking tongue is arranged inside the bracket, and the other side is arranged outside the housing after passing through the housing movably; the bracket is embedded in the housing; it further includes:

[0005] An unlocking shaft, the unlocking shaft is installed on the locking tongue and is located inside the bracket, and one end of the unlocking shaft is in a conical structure;

[0006] A transmission fork, the transmission fork is movably arranged inside the bracket;

[0007] A wedge trigger block, the wedge trigger block is installed on the top plate at one end of the transmission fork, and the inclined surface of the wedge trigger block is movably abutted against the conical - structured end of the unlocking shaft;

[0008] A push - rod unlocking fork, the push - rod unlocking fork is rotatably installed on the other wing plate of the bracket and is movably arranged outside the housing; a T - shaped arc - shaped end block is arranged on the push - rod unlocking fork, and the two side edges of the T - shaped arc - shaped end block are movably in contact with two inclined surfaces arranged in a "V" - shaped layout on the side plates of the transmission fork;

[0009] A key fork, the key fork is rotatably installed on the waist plate of the bracket, and one end of it is in a T - shaped structure, and the flat end surfaces II on both sides of the T - shaped structure are movably in contact with the flat end surface I arranged on the bottom plate of the transmission fork.

[0010] Furthermore, guide pressure plates are arranged at the bottoms of the inner side walls of the two wing plates of the bracket, and the guide pressure plates are movably pressing on both side edges of the bottom plate of the transmission fork.

[0011] Further, a guiding block is provided on the side wall of the push rod unlocking fork, and the guiding block is movably inserted into an arc-shaped guiding groove formed in the wing plate of the bracket where the push rod unlocking fork is installed.

[0012] Further, two first reset springs are installed on one of the wing plates of the bracket by using two first reset spring installation end rods; the upper end feet of the first reset springs are in contact with the first limit end rod, and the lower end feet are in contact with the second limit end rod. The first limit end rod is installed on the wing plate of the bracket where the first reset spring installation end rod is installed, and the second limit end rod is installed on the side plate of the transmission fork.

[0013] Further, a second reset spring is sleeved on the push rod unlocking fork, and both end feet of the second reset spring are in movable contact with the first limit end rod.

[0014] Further, a third reset spring is sleeved on the rotating shaft of the lock tongue, one of its end feet is embedded in the lock tongue, and the other end feet are in movable contact with the shaft rod of the unlocking shaft and the transverse blocking piece integrally formed on the mounting hole respectively.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model provides an emergency escape lock driven by a double-sided unlocking wedge block, which adopts a push rod unlocking fork and a key fork to achieve the double-sided unlocking function. The mechanical structure is simple, the stability is high, and it is convenient to unlock without jamming or other conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model.

[0017] Figure 2 is a schematic structural diagram of the present utility model after removing the outer shell.

[0018] Figure 3 is an exploded view of the present utility model after removing the outer shell.

[0019] Figure 4 is a schematic structural diagram of the present utility model after removing the outer shell and the bracket.

[0020] Figure 5 is a schematic connection diagram of the transmission fork, the push rod unlocking fork and the key fork in the present utility model.

[0021] Figure 6 is a schematic structural diagram of the bracket in the present utility model.

[0022] Figure 7 is a schematic structural diagram of the push rod unlocking fork in the present utility model.

[0023] Figure 8 is a schematic structural diagram of the key fork in the present utility model.

[0024] Description of the reference numerals of the drawings:

[0025] Outer shell 1, bracket 2, mounting hole 2-1, arc-shaped guide groove 2-2, guide pressure plate 2-3, cross stop piece 2-4, lock tongue 3, push rod unlocking fork 4, T-shaped circular arc end block 4-1, guide block 4-2, key fork 5, flat end face two 5-1, transmission fork 6, inclined plane 6-1, flat end face one 6-2, wedge-shaped trigger block 7, unlocking shaft 8, reset spring one mounting end rod 9, reset spring one 10, limit end rod one 11, limit end rod two 12, reset spring two 13, reset spring three 14. Detailed implementation manners

[0026] Next, the technical solutions in the present utility model will be clearly and completely described in conjunction with the drawings. Only the preferred embodiments in the description are taken as examples. All other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present utility model.

[0027] As Figures 1-8 shown, the following technical solutions are adopted in this detailed implementation manner: It includes an outer shell 1, a bracket 2 and a lock tongue 3; the bracket 2 is in a "U" shape structure, the lock tongue 3 is arranged in the notch in the right wing plate of the bracket 2, and is rotatably installed on the mounting holes 2-1 on both side walls of the notch by a rotating shaft. The left side of the lock tongue 3 is arranged inside the bracket 2, and the right side is arranged outside the outer shell 1 after passing through the relief opening on the right side wall of the outer shell 1 movably; the bracket 2 is embedded in the outer shell 1; it further includes:

[0028] An unlocking shaft 8, the unlocking shaft 8 is fixed on the lock tongue 3 and is located inside the bracket 2, and one end of the unlocking shaft 8 is in a conical structure;

[0029] A transmission fork 6, the transmission fork 6 is movably arranged inside the bracket 2; guide pressure plates 2-3 are arranged at the bottoms of the inner side walls of the two wing plates of the bracket 2, and the guide pressure plates 2-3 are movably pressed on both side edges of the bottom plate of the transmission fork 6, playing a role of limiting and guiding the transmission fork 6 during translation;

[0030] A wedge-shaped trigger block 7, the wedge-shaped trigger block 7 is installed on one end top plate of the transmission fork 6, and the inclined plane of the wedge-shaped trigger block 7 is movably abutted against the end with a conical structure of the unlocking shaft 8;

[0031] A push rod unlocking fork 4, wherein the push rod unlocking fork 4 is rotatably mounted on the left wing plate of the bracket 2, and a guide block 4-2 is arranged on the side wall of the push rod unlocking fork 4, and the guide block 4-2 is movably arranged in the arc-shaped guide groove 2-2 on the wing plate on the left side of the bracket 2, and after the push rod unlocking fork 4 passes through the clearance opening on the left side of the shell 1, it is movably arranged outside the shell 1; a T-shaped arc-shaped end block 4-1 is integrally formed on the push rod unlocking fork 4, and two side edges of the T-shaped arc-shaped end block 4-1 are movably contacted with two inclined surfaces 6-1 arranged in a "V" shape on the side plate of the transmission fork 6;

[0032] A key fork 5, wherein the key fork 5 is rotatably mounted on the waist plate of the bracket 2, and one end of the key fork 5 is arranged in a T-shaped structure, and the flat end surfaces 5-1 on both sides of the T-shaped structure are arranged to be in active contact with the flat end surface 6-2 provided on the bottom plate of the transmission fork 6;

[0033] A return spring 10, wherein there are two return springs 10, both of which are mounted on the wing plate on the left side of the bracket 2 by using the return spring 1 mounting end rod 9; the upper end foot of the return spring 10 is arranged in contact with the limit end rod 11, and the lower end foot is arranged in contact with the limit end rod 2 12, the limit end rod 11 is mounted on the wing plate on the left side of the bracket 2, and the limit end rod 2 12 is mounted on the side plate of the transmission fork 6;

[0034] A second return spring 13, wherein the second return spring 13 is sleeved on the push rod unlocking fork 4, and both end legs of the second return spring 13 are movably contacted with the limit end rod 11;

[0035] The reset spring three 14 is sleeved on the rotating shaft of the lock tongue 3, one end of the reset spring 14 is embedded in the lock tongue 3, and the other end of the reset spring 14 is respectively in active contact with the shaft rod of the unlocking shaft 8 and the horizontal baffle 2-4 integrally formed on the mounting hole 21.

[0036] When the utility model is used, the push rod is rotated to unlock the shift fork 4, and the T-shaped arc-shaped end block 4-1 pushes the inclined surface 6-1, thereby pushing the transmission shift fork 6 to translate, and then driving the wedge-shaped trigger block 7 to translate, and the inclined surface of the wedge-shaped trigger block 7 abuts against one end of the conical structure of the unlocking shaft 8, so that the unlocking shaft 8 is lifted, thereby pushing the lock tongue 3 to rotate around its rotation axis, and realizing the unlocking of the lock tongue;

[0037] When the key fork 5 is turned, the flat end surface 2 5-1 pushes the flat end surface 1 6-2, thereby pushing the transmission fork 6 to translate, and then driving the wedge-shaped trigger block 7 to translate, and the inclined surface of the wedge-shaped trigger block 7 contacts one end of the conical structure of the unlocking shaft 8, so that the unlocking shaft 8 is lifted, thereby pushing the lock tongue 3 to rotate around its rotation axis, thereby unlocking the lock tongue;

[0038] After unlocking, under the elastic action of the first return spring 10, the second return spring 13 and the third return spring 14, the transmission fork 6, the push rod unlocking fork 4 and the lock tongue 3 are driven to reset.

[0039] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model provides an emergency escape lock with a double-sided unlocking wedge block drive, which adopts a push rod unlocking fork and a key fork to achieve the double-sided unlocking function. The mechanical structure is simple, the stability is high, and it is convenient to unlock without jamming or other conditions.

[0040] For those skilled in the art, they can modify the technical solutions recorded in the foregoing embodiments and perform equivalent substitution of some technical features. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An emergency escape lock with a double-sided unlocking wedge block drive, comprising a housing (1), a bracket (2) and a lock tongue (3); the bracket (2) is in a "U"-shaped structure, the lock tongue (3) is arranged in a notch in one of the wing plates of the bracket (2), and is rotated by a rotating shaft to be installed on the mounting holes (2-1) on the two side walls of the notch, one side of the lock tongue (3) is arranged in the bracket (2), and the other side is arranged to be movable through the housing (1) and then arranged outside the housing (1); the bracket (2) is embedded in the housing (1); the characteristics are: It also contains: An unlocking shaft (8), the unlocking shaft (8) being mounted on the locking tongue (3) and located inside the bracket (2), and one end of the unlocking shaft (8) being a conical structure; A transmission fork (6), wherein the transmission fork (6) is movably arranged in the bracket (2); A wedge-shaped trigger block (7), wherein the wedge-shaped trigger block (7) is mounted on a top plate at one end of the transmission fork (6), and the inclined surface of the wedge-shaped trigger block (7) is movably abutted against one end of the unlocking shaft (8) in a conical structure; A push rod unlocking fork (4), the push rod unlocking fork (4) being rotatably mounted on another wing plate of the bracket (2) and movably arranged outside the housing (1); a T-shaped arc-shaped end block (4-1) is arranged on the push rod unlocking fork (4), and two side edges of the T-shaped arc-shaped end block (4-1) are movably contacted with two inclined surfaces (6-1) arranged in a "V" shape and provided on the side plate of the transmission fork (6); A key fork (5) is rotatably mounted on the waist plate of the bracket (2), and one end of the key fork is arranged in a T-shaped structure, and two flat end surfaces (5-1) on both sides of the T-shaped structure are arranged to be in active contact with a flat end surface (6-2) provided on the bottom plate of the transmission fork (6).

2. The emergency escape lock with double-sided unlocking wedge block transmission according to claim 1, characterized in that: The bottom of the inner side walls of the two wing plates of the bracket (2) are both provided with guide pressure plates (2-3), and the guide pressure plates (2-3) are movably pressed on the two side edges of the bottom plate of the transmission fork (6).

3. The emergency escape lock with double-sided unlocking wedge block transmission according to claim 2, characterized in that: A guide block (4-2) is provided on the side wall of the push rod unlocking fork (4), and the guide block (4-2) is movably inserted into an arc-shaped guide groove (2-2) on a wing plate provided in the bracket (2) and on which the push rod unlocking fork (4) is installed.

4. The emergency escape lock with double-sided unlocking wedge block transmission according to claim 3, characterized in that: Two return springs (10) are mounted on one of the wing plates of the bracket (2) by means of two return spring mounting end rods (9); the upper end foot of the return spring (10) is arranged in contact with the limit end rod (11), and the lower end foot is arranged in contact with the limit end rod (12); the limit end rod (11) is mounted on the wing plate of the bracket (2) on which the return spring (1) mounting end rod (9) is mounted, and the limit end rod (12) is mounted on the side plate of the transmission fork (6).

5. The emergency escape lock with double-sided unlocking wedge block transmission according to claim 4, characterized in that: The push rod unlocking fork (4) is sleeved with a second return spring (13), and both end legs of the second return spring (13) are movably contacted with the first limit end rod (11).

6. The emergency escape lock with double-sided unlocking wedge block transmission according to claim 5, characterized in that: A return spring 3 (14) is sleeved on the rotating shaft of the lock tongue (3), one end of which is embedded in the lock tongue (3), and the other end of which is movably contacted with the shaft rod of the unlocking shaft (8) and a horizontal baffle (2-4) integrally formed on the mounting hole (2-1).

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