Escape fireproof lock with emergency unlocking function

Abstract

The escape fireproof lock with the emergency unlocking function comprises a lock shell, a dead bolt mechanism and an inclined bolt mechanism are arranged in the lock shell, the inclined bolt mechanism comprises an inclined bolt block, a pushing device connected with the inclined bolt block and a twisting device driving the pushing device to move front and back, the dead bolt mechanism is located above the inclined bolt mechanism, and the dead bolt mechanism is located above the inclined bolt block. Comprising a dead bolt block, a push plate connected with the dead bolt block and a lock cylinder shifting piece driving the push plate to move front and back, a limiting device used for limiting the dead bolt block and an inclined bolt block to retract in a lock body is arranged on the lock cylinder shifting piece, and a linkage mechanism used for controlling the inclined bolt block and the dead bolt block to move at the same time is arranged between the inclined bolt mechanism and the dead bolt mechanism. The utility model has the following advantages: the double tongues are quickly opened in a linkage way inside the door; the latch bolt and the dead bolt are set to be normally open simultaneously, so that the use flexibility is improved; the double lock tongues can be unlocked synchronously and emergently by using a key outside the door, so that the escape safety is improved; safety performance is high and operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of lock technology, and more specifically, it relates to an escape fireproof lock with an emergency unlocking function. Background Technology

[0002] Existing fire-resistant locks on the market, installed on fire doors, include a latch mechanism and a bolt mechanism, which lock the fire door simultaneously using both latches. Existing fire-resistant locks have the following drawbacks: 1. In an emergency, when the lock needs to be opened from inside the door, it is impossible to quickly open both the latch and bolt simultaneously, requiring multiple steps and a prolonged operation time; 2. In an emergency, it is impossible to open both the bolt and bolt simultaneously from outside the door (from the inside), thus reducing the chances of escape. Based on the above, this application proposes a fire-resistant lock that allows for keyless, rapid opening of both the latch and bolt simultaneously from inside the door, and in an emergency, it can also be opened simultaneously from outside the door (using a key). In special circumstances where the fire door requires a normally open function, the fire-resistant lock's latch and bolt have a preset normally open function, resulting in a fire-resistant escape lock with higher security performance and wider application scenarios, featuring both emergency unlocking and preset normally open functions. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an escape fire lock with high safety performance, convenient and efficient operation, and emergency unlocking and setting to always open functions.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an escape fire lock with an emergency unlocking function, comprising a lock shell, a square latch mechanism and a slanted latch mechanism disposed within the lock shell, the slanted latch mechanism comprising a slanted latch block, a pushing device connected to the slanted latch block, and a torsion device for driving the pushing device to move back and forth, the square latch mechanism being located above the slanted latch mechanism, comprising a square latch block, a push plate connected to the square latch block, and a lock cylinder lever for driving the push plate to move back and forth, the lock cylinder lever being provided with a limiting device for restricting the square latch block and the slanted latch block to retract within the lock body, and a linkage mechanism for simultaneously controlling the movement of the slanted latch block and the square latch mechanism being provided between the slanted latch mechanism and the square latch mechanism.

[0005] The present invention is further configured as follows: the linkage mechanism includes a swing plate, a drive plate, and a connecting plate; the push plate is located between the swing plate and the connecting plate; the swing plate is located between the drive plate and the push plate; the tail end of the swing plate is rotatably fitted to the inner wall of the lock housing via a fixing nail; the head end is inserted into the push device; the two ends of the drive plate are respectively provided with a vertical slide groove 1 and a vertical slide groove 2; and a drive push block is provided above the vertical slide groove 1; a sliding column 1 passes through the vertical slide groove 1; and sliding columns 2 pass through the vertical slide groove 2; the tail ends of the sliding columns 1 and 2 are fixed to the inner wall of the lock housing; and a middle position of the drive plate is provided with... A first inclined slide groove is provided, and a first sliding pin is slidably fitted within the first inclined slide groove. The first sliding pin is fixed to the swing plate. Vertical slide grooves three and four are respectively provided at both ends of the connecting plate. A push groove adapted to the drive push block is provided above the third vertical slide groove. A first sliding column extends into the third vertical slide groove for slidable fit, and a second sliding column extends into the fourth vertical slide groove for slidable fit. A second sliding pin is provided in the middle of the connecting plate. A torsion spring positioning part is also provided at the tail end of the connecting plate. The push plate is provided with a second inclined slide groove for the second sliding pin to pass through and for slidable fit, and a horizontal slide groove for the first fixed pin to pass through and for slidable fit.

[0006] The present invention is further configured such that: the lock cylinder lever includes a lock cylinder hole, a lever, and a lever block located at the tail end of the lever; the tail end of the push plate is provided with a V-shaped groove for the lever block to slide through and engage.

[0007] The present invention is further configured such that: the V-shaped groove is divided into a locking area, an unlocking area and a normally open area; when the toggle block moves into the locking area, the square tongue block is in a locked state that moves out of the lock housing; when the toggle block moves into the unlocking area, the square tongue block retracts into the lock housing.

[0008] The present invention is further configured such that: the limiting device includes a limiting swing block that is rotatably fitted on the inner wall of the lock housing, the limiting swing block is provided with a locking end and an abutting end, when the lever moves to the normally open area of ​​the push plate V-groove, the lever abuts against the locking end of the limiting swing block, the abutting end abuts against the tail end of the swing plate, and the square tongue and the oblique tongue retract into the lock housing at the same time.

[0009] The present invention is further configured such that: the limiting swing block is V-shaped, the locking end and the abutting end are located at the two ends of the V-shape respectively, wherein the end of the abutting end is arc-shaped, and the end of the locking end is provided with a concave locking groove, and the corner of the lever can be locked in the locking groove.

[0010] The present invention is further configured such that: the pushing device includes a push rod, a slide is sleeved at the middle position of the push rod, a return spring is provided at the tail end of the push rod, and a fixing nut is provided at the tail end of the return spring.

[0011] The present invention is further configured such that: the torsion device includes a square core assembly connected and assembled with the handle, a rotating plate sleeved outside the square core assembly, the end of the rotating plate extending into the slide and abutting against the bottom wall of the slide, and a return torsion spring abutting against the top wall of the slide.

[0012] By adopting the above technical solution, this utility model has the following advantages:

[0013] 1. The door opens quickly with a double-tongue linkage from the inside. By optimizing the linkage structure of the oblique and square tongue mechanisms, the oblique and square tongues can be opened simultaneously and quickly from the inside without a key. Unlocking can be completed with a single operation (such as pressing the handle or knob), which greatly shortens the operation time in emergency situations and improves escape efficiency.

[0014] 2. The latch and square bolt are normally open. An independent control mechanism for both latches allows them to be in the normally open state simultaneously, or the square bolt to remain open without affecting the normal locking and unlocking of the latch. In scenarios requiring only normal locking (such as daily use), the square bolt can be in the unlocked position to avoid repeated operation; when deadbolting is needed, the square bolt can extend normally for locking; and when the door needs to be left unlocked, both the latch and square bolt retract into the lock housing simultaneously and are secured, expanding the lock's applicable scenarios.

[0015] 3. Emergency double-tongue simultaneous unlocking from the outside enhances escape safety. In emergency situations outside the door (such as fire rescue), the oblique and square tongues can be retracted simultaneously using a special tool (such as a fire key) to achieve rapid door opening and improve the success rate of escape and rescue. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the double-locking tongue unlocking state structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the double-locking tongue locking state structure of this utility model;

[0018] Figure 3 This is a partial structural diagram of the double locking tongue in the normally open state of this utility model;

[0019] Figure 4 This is a schematic diagram of the double locking tongue in the normally open state of this utility model;

[0020] Figure 5 Structural breakdown of this utility model Figure 1 ;

[0021] Figure 6 Structural breakdown of this utility model Figure 2 ;

[0022] Figure 7 This is a schematic diagram of the linkage plate structure;

[0023] Figure 8 This is a schematic diagram of the swing plate structure.

[0024] 1. Lock case;

[0025] 2. Slanted tongue mechanism; 20. Slanted tongue block; 21. Pushing device; 210. Push rod; 211. Slide; 212. Return spring; 213. Fixing nut; 22. Torsion device; 220. Square core assembly; 221. Rotating plate; 222. Return torsion spring;

[0026] 3. Square tongue mechanism; 30. Square tongue block; 31. Push plate; 310. V-groove; 311. Locking area; 312. Unlocking area; 313. Normally open area; 314. Slanted slide groove II; 315. Horizontal slide groove; 32. Lock cylinder lever; 320. Lock cylinder hole; 321. Lever; 322. Lever block;

[0027] 4. Limiting device; 40. Limiting swing block; 41. Locking end; 42. Abutting end; 43. Slot;

[0028] 5. Linkage mechanism; 50. Swing plate; 500. Fixed pin one; 501. Sliding pin one; 51. Drive plate; 510. Vertical slide groove one; 511. Vertical slide groove two; 512. Drive push block; 513. Sliding column one; 514. Sliding column two; 515. Inclined slide groove one; 52. Linkage plate; 520. Vertical slide groove three; 521. Vertical slide groove four; 522. Push groove; 523. Sliding pin two; 524. Torsion spring positioning part. Detailed Implementation

[0029] Reference Figures 1 to 8 The embodiments of this utility model will be further described below.

[0030] An escape fireproof lock with emergency unlocking function includes a lock case 1. The lock case 1 is provided with a square latch mechanism 3 and a slanted latch mechanism 2. The slanted latch mechanism 2 includes a slanted latch block 20, a pushing device 21 connected to the slanted latch block 20, and a torsion device 22 that drives the pushing device 21 to move back and forth. The square latch mechanism 3 is located above the slanted latch mechanism 2 and includes a square latch block 30, a push plate 31 connected to the square latch block 30, and a lock cylinder lever 32 that drives the push plate 31 to move back and forth. The lock cylinder lever 32 is provided with a limiting device 4 for restricting the square latch block 30 and the slanted latch block 20 from retracting into the lock body. A linkage mechanism 5 is provided between the slanted latch mechanism 2 and the square latch mechanism 3 for simultaneously controlling the movement of the slanted latch block 20 and the square latch block 30.

[0031] In Example 1, both the square latch mechanism 3 and the oblique latch mechanism 2 are simultaneously in a locked state (see attached instruction manual). Figure 1 and 2The working principle of unlocking the square latch mechanism 3 and the oblique latch mechanism 2 simultaneously inside the door: The square core component 220 inside the oblique latch mechanism 2 is equipped with a handle. By operating the handle, the square core structure and the rotating plate 221 are driven to rotate clockwise. The end of the rotating plate 221 abuts against the bottom wall of the slide 211, pushing the slide 211 and the push rod 210 to move towards the inside of the lock shell 1, thereby retracting the oblique latch into the lock shell 1. The swing plate 50 in the linkage mechanism 5 has its first end inserted into the slide block 211. When the slide block 211 moves toward the inside of the lock housing 1, it drives the swing plate 50 to rotate counterclockwise along the fixing pin 500. The swing plate 50 is provided with a sliding pin 501. The sliding pin 501 is forced to drive the drive plate 51 to move downward, so that the top wall of the vertical slide groove 510 abuts against the sliding column 513, and the top wall of the vertical slide groove 511 abuts against the sliding column 514. When the drive plate 51 moves downward, it drives the push block 512 to push against the linkage plate 52. The push groove 522 applies force, causing the connecting plate 52 to move downwards. The top wall of the vertical slide groove 3 520 abuts against the slide column 1 513, and the top wall of the vertical slide groove 4 521 abuts against the slide column 2 514. During the downward movement of the connecting plate 52, the sliding pin 2 523 is driven to move along the oblique slide groove 2 314 on the push plate 31, driving the push plate 31 to move towards the inside of the lock case 1, causing the square tongue block 30 to retract into the lock case 1, thereby achieving the function of simultaneously unlocking the oblique tongue mechanism 2 and the square tongue mechanism 3, and improving the success rate of escape and rescue.

[0032] Example 2: The square latch block 30 is normally open, without affecting the locking principle of the latch: A matching key is inserted into the lock cylinder hole 320. A turning operation drives the lever 321 to swing, moving the lever block 322 along the V-groove 310 on the push plate 31 from the locking area 311 to the unlocking area 312. The swinging of the lever 321 causes the push plate 31 to move towards the lock housing 1, retracting the square latch block 30 into the lock housing 1, thus unlocking the square latch. During the movement of the push plate 31, the cooperation of the sliding pin 523 and the oblique sliding groove 314 drives the connecting plate 52 downwards. When the square latch mechanism 3 is in the normally open state, the connecting plate 52 remains in the lower position. At this time, operating the latch mechanism 2 only moves the swing plate 50 and the drive plate 51 when opening or closing, forming an independent control mechanism and expanding the applicable scenarios of the lock.

[0033] Example 3: The oblique latch block 20 and the square latch block 30 are normally open. In an emergency (under special usage scenarios), it is necessary to simultaneously unlock the square latch mechanism 3 and the oblique latch mechanism 2 from the outside, and the lock needs to be in the normally open state. (Refer to the instruction manual for the working principle.) Figure 3 and 4): By matching the key in the lock cylinder hole 320 and turning it, the lever 321 is driven to swing. The lever 322 on the lever 321 moves along the V-shaped groove 310 on the push plate 31 from the locking area 311 to the unlocking area 312. Then, the turning operation continues, moving the lever 322 to the normally open area 313. By swinging the lever 321, the limiting swing block 40 is pushed to swing clockwise until the end corner of the lever 321 is locked in the slot 43 of the limiting swing block 40. At this time, the abutting end 42 on the limiting swing block 40 abuts against the end of the swing plate 50. The swing plate 50 will then rotate counterclockwise with the movement of the limiting swing block 40. The tail end of the swing plate 50 pushes the slide block 211 toward the lock case 1, which drives the push rod 210 to move. The push rod 210 drives the oblique tongue block 20 to retract into the lock case 1. At this time, the square tongue mechanism 3 and the oblique tongue mechanism 2 are simultaneously in the open state. The oblique tongue block 20 will not be subjected to the force of the return torsion spring 222, which will drive it out of the lock case 1 and lock it. This keeps the entire lock in the normally open state, eliminating the need to press the handle or turn the knob, thus achieving quick door opening and improving the success rate of escape and rescue.

[0034] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A fire escape lock with emergency unlocking function, comprising a lock housing (1), a square tongue mechanism (3) and a latch bolt mechanism (2) arranged in the lock housing (1), characterized in that: The oblique tongue mechanism (2) includes an oblique tongue block (20), a pushing device (21) connected to the oblique tongue block (20), and a torsion device (22) that drives the pushing device (21) to move back and forth. The square tongue mechanism (3) is located above the oblique tongue mechanism (2) and includes a square tongue block (30), a push plate (31) connected to the square tongue block (30), and a lock cylinder lever (32) that drives the push plate (31) to move back and forth. The lock cylinder lever (32) is provided with a limiting device (4) for restricting the square tongue block (30) and the oblique tongue block (20) from retracting into the lock body. A linkage mechanism (5) is provided between the oblique tongue mechanism (2) and the square tongue mechanism (3) for simultaneously controlling the movement of the oblique tongue block (20) and the square tongue block (30).

2. The escape fire lock with emergency unlocking function according to claim 1, characterized in that: The linkage mechanism (5) includes a swing plate (50), a drive plate (51), and a linkage plate (52). The push plate (31) is located between the swing plate (50) and the linkage plate (52). The swing plate (50) is located between the drive plate (51) and the push plate (31). The tail end of the swing plate (50) is rotatably fitted to the inner wall of the lock housing (1) by a fixing nail (500), and the head end is inserted into the push device (21). The two ends of the drive plate (51) are respectively The device is provided with a vertical slide groove 1 (510) and a vertical slide groove 2 (511), and a driving push block (512) is provided above the vertical slide groove 1 (510). A sliding column 1 (513) is inserted inside the vertical slide groove 1 (510), and a sliding column 2 (514) is inserted inside the vertical slide groove 2 (511). The tail ends of the sliding column 1 (513) and the sliding column 2 (514) are fixed to the inner wall of the lock housing (1). An oblique slide groove 1 (512) is provided in the middle of the drive plate (51). 515), a sliding pin 1 (501) is slidably fitted in the inclined slide groove 1 (515), the sliding pin 1 (501) is fixed on the swing plate (50), the two ends of the connecting plate (52) are respectively provided with vertical slide groove 3 (520) and vertical slide groove 4 (521), and a push groove (522) adapted to the drive push block (512) is provided above the vertical slide groove 3 (520), the sliding column 1 (513) extends to the vertical slide groove 3 (520). The sliding joint is internally sliding, and the sliding column 2 (514) extends to the vertical sliding groove 4 (521) for internal sliding. The middle position of the connecting plate (52) is provided with the sliding pin 2 (523), and the tail end of the connecting plate (52) is also provided with the torsion spring positioning part (524). The push plate (31) is provided with the oblique sliding groove 2 (314) for the sliding pin 2 (523) to pass through and for sliding, and the horizontal sliding groove (315) for the fixing pin 1 (500) to pass through and for sliding.

3. The escape fire lock with emergency unlocking function according to claim 2, characterized in that: The lock cylinder lever (32) includes a lock cylinder hole (320), a lever (321) and a lever block (322) located at the tail end of the lever (321). The tail end of the push plate (31) is provided with a V-shaped groove (310) for the lever block (322) to slide through.

4. The escape fire lock with emergency unlocking function according to claim 3, characterized in that: The V-groove (310) is divided into a locking area (311), an unlocking area (312) and a normally open area (313). When the toggle block (322) moves into the locking area (311), the square tongue block (30) is in a locked state, moving out of the lock housing (1). When the toggle block (322) moves into the unlocking area (312), the square tongue block (30) retracts into the lock housing (1).

5. The escape fire lock with emergency unlocking function according to claim 4, characterized in that: The limiting device (4) includes a limiting swing block (40) that is rotatably fitted on the inner wall of the lock housing (1). The limiting swing block (40) is provided with a locking end (41) and an abutting end (42). When the lever (322) moves to the normally open area (313) of the push plate V-groove (310), the lever (321) abuts against the locking end (41) of the limiting swing block (40), and the abutting end (42) abuts against the tail end of the swing plate (50). The square tongue block (30) and the oblique tongue block (20) retract into the lock housing at the same time.

6. The escape fire lock with emergency unlocking function according to claim 5, characterized in that: The limiting swing block (40) is V-shaped, with the locking end (41) and the abutting end (42) located at the two ends of the V-shape respectively. The end of the abutting end is arc-shaped, and the end of the locking end (41) is provided with a concave locking groove (43). The corner of the lever (321) can be locked in the locking groove (43).

7. The escape fire lock with emergency unlocking function according to claim 1, characterized in that: The pushing device (21) includes a push rod (210), a slide (211) is sleeved in the middle of the push rod (210), a return spring (212) is provided at the tail end of the push rod (210), and a fixing nut (213) is provided at the tail end of the return spring (212).

8. The escape fire lock with emergency unlocking function according to claim 7, characterized in that: The torsion device (22) includes a square core assembly (220) connected to the handle and a rotating plate (221) sleeved outside the square core assembly (220). The end of the rotating plate (221) extends into the slide (211) and abuts against the bottom wall of the slide (211). A return torsion spring (222) abuts against the top wall of the slide (211).

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