Mortise lock for double-opening escape door

Abstract

The present invention discloses a mortise lock for a double-open escape door, comprising a first door lock and a second door lock arranged opposite to each other, which are respectively installed on a first door leaf and a second door leaf. The first door lock is provided with an upper door plug assembly and a lower door plug assembly, which are used to lock the door leaf. The upper door plug assembly is provided with an upper plug rod seat assembly. When the door is opened, the door plug is restricted by the upper plug rod seat assembly and cannot be extended. When the door is closed, the upper plug rod seat assembly is pressed down to release the restriction, and the upper plug rod seat extends to lock the door leaf, thereby realizing automatic locking. When the first door leaf is opened, the upper push block and the lower push block extend to unlock the second door lock, and the two doors are opened at the same time, thereby realizing a quick escape function. The second door lock is provided with an oblique tongue and a square tongue. When the square tongue extends out and locks, the inner dial wheel can be rotated to unlock, and the outer dial wheel cannot drive the inner dial wheel to rotate, thereby realizing that only one-way unlocking is allowed when the double-open escape door is locked, thereby achieving a good safety protection effect. When the square tongue is retracted and the second door is in a lock unlocking state, the door can be opened by rotating the inner dial wheel and the outer dial wheel, and the locking method is flexible.

Description

Technical Field

[0001] The invention relates to the field of door lock production equipment, in particular to a mortise lock for a double-opening escape door. Background Art

[0002] For a long time, fire safety has been an important issue in the management of crowded places, and the issue of fire safety exits has been a concern of managers of places with a large number of fire technicians. According to statistics, most fire accidents that cause a large number of casualties are caused by the locking of safety exits or the obstruction of evacuation passages. Therefore, the design of door locks for escape door exits is crucial. While considering fire safety issues, escape doors also need to consider good and simple locking functions for public security management issues. However, the current escape doors have a single function and poor locking reliability, especially for double-open escape doors. After the first door of the manual control is locked, it cannot be opened quickly in the event of an emergency, resulting in delays in precious escape time and even causing more injuries. Summary of the invention

[0003] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a mortise lock for a double-opening escape door, which has an ingenious structure, flexible locking, can achieve rapid locking and rapid unlocking, and can effectively improve the escape efficiency.

[0004] According to a first aspect of the present invention, there is provided a mortise lock for a double-opening escape door, comprising a first door lock, the first door lock being installed on a first door leaf of the double-opening escape door, comprising:

[0005] An upper pull rod seat is arranged at the upper part of the first door lock; a rotating wheel is rotatably connected to the inside of the first door lock and movably connected to the upper pull rod seat; a lower pull rod seat is arranged at the lower part of the first door lock and movably connected to the rotating wheel; an upper push block assembly is arranged at the upper part of the first door lock and movably connected to the rotating wheel; a lower push block assembly is arranged at the lower part of the first door lock and movably connected to the lower pull rod seat; a door plug assembly comprises an upper door plug assembly and a lower door plug assembly, the upper door plug assembly is connected to the upper pull rod seat, the lower door plug assembly is connected to the lower pull rod seat, the upper door plug assembly comprises an upper plug rod and an upper plug rod seat assembly, and the upper plug rod seat assembly is arranged at the top of the double-opening escape door.

[0006] Rotate the rotating wheel to drive the upper pull rod seat to retract into the interior of the first door lock, and at the same time drive the upper push block assembly and the lower pull rod seat to retract. At the same time, the lower pull rod seat drives the lower push block assembly to move into the interior of the first door lock, and the door plug assembly retracts to realize the unlocking function. The first door leaf opens, and at the same time, the upper plug rod seat assembly locks the upper plug rod.

[0007] When the first door leaf is closed, the upper insertion rod seat assembly releases the lock on the upper insertion rod, and the upper insertion rod and the lower insertion rod extend outward from the first door lock to realize the locking function.

[0008] The mortise lock for a double-opening escape door described in the first aspect of the present invention has at least the following beneficial effects: this embodiment is provided with an upper push block assembly and a lower push block assembly respectively located at the upper and lower parts of the first door lock, and is also provided with an upper plug rod and a lower plug rod respectively located at the upper and lower parts of the first door lock. The upper push block assembly and the lower push block assembly, the upper plug rod and the lower plug rod jointly realize the locking of the first door leaf, which is conducive to realizing the stable locking of the door leaf; when the rotating wheel is rotated, the rotating wheel drives the upper pull rod seat to pull the upper plug rod downward to unlock, and the upper plug rod seat assembly locks the upper plug rod in position. When the first door leaf is closed, the lock is released, and the upper plug rod is extended to realize automatic locking of the first door leaf. Unlocking and locking are simple and convenient, which effectively realizes the timely escape of personnel in the event of an accident.

[0009] According to the mortise lock for a double-opening escape door described in the first aspect of the present invention, an upper push block driving plate assembly movably connected to the rotating wheel and the upper push block assembly is provided between the rotating wheel and the upper push block assembly. When the rotating wheel rotates, it drives the upper push block driving plate assembly and then pulls the upper push block assembly to move.

[0010] According to the mortise lock for a double-opening escape door described in the first aspect of the present invention, an upper rod seat transmission plate assembly movably connected to the rotating wheel and the upper rod seat is provided between the rotating wheel and the upper rod seat, and the upper rod seat transmission plate assembly is composed of an upper rod seat transmission plate and an upper rod seat connecting plate, and the upper rod seat transmission plate is rotatably connected to the upper rod seat connecting plate.

[0011] According to the mortise lock for a double-opening escape door described in the first aspect of the present invention, a push-down block transmission plate assembly movably connected to the push-down block assembly and the pull-down rod seat is provided between the push-down block assembly and the pull-down rod seat, and the push-down block transmission plate assembly is rotatably connected to the first door lock.

[0012] According to the mortise lock for a double-opening escape door described in the first aspect of the present invention, the push-down block assembly includes a push-down block, a push-down block connecting piece and a push-down block spring, and the push-down block spring realizes the elastic connection between the push-down block and the push-down block connecting piece.

[0013] According to a second aspect of the present invention, there is provided a mortise lock for a double-opening escape door, comprising a second door lock, which is arranged on a second door leaf opposite to the first door leaf, and the second door lock comprises:

[0014] The oblique tongue is slidably connected to the upper part of the second door lock; the square tongue assembly is slidably connected to the lower part of the second door lock; the inner dial wheel is rotatably connected to the second door lock; the outer dial wheel is arranged adjacent to the inner dial wheel and is rotatably connected to the second door lock; the dial block is located below the inner dial wheel and is rotatably connected to the inside of the second door lock; the conversion block is rotatably connected to the inner dial wheel;

[0015] When the second door leaf is locked, the tongue assembly extends outward from the second door lock, the conversion block is located at the first position, and the outer dial wheel is disconnected from the inner dial wheel;

[0016] Rotate the inner dial wheel to drive the oblique tongue to move inside the second door lock, and at the same time drive the dial block to rotate. When the dial block rotates, it pulls the square tongue assembly to move inside the second door lock, thereby unlocking the second door leaf;

[0017] When the second door leaf is unlocked, the tongue assembly is located inside the second door lock, the conversion block is located at the second position, the outer dial wheel is connected to the inner dial wheel (870) through the conversion block, and the second door leaf can be opened by rotating the outer dial wheel.

[0018] The mortise lock for a double-opening escape door described in the second aspect of the present invention has at least the following beneficial effects: the second door lock located at the second door leaf is arranged in this embodiment, and the second door lock includes an inclined tongue arranged at the upper part of the second door lock and a square tongue assembly arranged at the lower part of the second door lock. The first door leaf and the second door leaf are locked by pushing the square tongue assembly to extend toward the outside of the second door lock. At this time, the conversion block is in the first position, the outer dial wheel is disconnected from the inner dial wheel, and the outer dial wheel cannot rotate the inner wheel, so that the second door leaf can be unlocked in one direction, which is beneficial to safety protection. The inner dial wheel is rotated, and the inner dial wheel drives the inclined tongue and the square tongue assembly to move toward the inside of the second door lock to unlock the second door leaf. At this time, the conversion block is in the first position, and the inner dial wheel is connected to the outer dial wheel. The second door leaf can be opened by driving the inner dial wheel through the outer dial wheel. The locking is effective and flexible to use.

[0019] According to the mortise lock for a double-opening escape door described in the second aspect of the present invention, the inner dial wheel is rotated by an external force to drive the dial block to rotate, and at the same time drive the conversion block to rotate, and then the outer dial wheel is connected to the inner dial wheel through the conversion block.

[0020] According to the mortise lock for a double-opening escape door described in the second aspect of the present invention, when the second door leaf is in the unlocked state, the oblique tongue extends out of the second door lock, the square tongue assembly is pushed to extend out of the second door lock, the shift block returns from the second position to the first position, the outer dial wheel is disconnected from the inner dial wheel, and the second door leaf is locked.

[0021] According to the mortise lock for a double-opening escape door described in the second aspect of the present invention, the tongue assembly includes a push piece, a tongue and a tongue transmission block, the push piece is slidably connected to the tongue assembly, the tongue transmission block is slidably connected to the tongue, and the push piece and the tongue transmission block are connected via a rivet shaft.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0024] Figure 1 An axonometric view of a mortise lock for a double-opening escape door according to the present invention;

[0025] Figure 2 An exploded view of a first door lock according to an embodiment of the present invention;

[0026] Figure 3 It is a front view of a first door lock according to an embodiment of the present invention;

[0027] Figure 4 It is an axonometric view of the first lower lock housing assembly of an embodiment of the present invention;

[0028] Figure 5 (a) is an exploded view of the upper pull rod seat transmission plate assembly according to an embodiment of the present invention;

[0029] Figure 5 (b) is an axonometric view of the upper pull rod seat transmission plate assembly according to an embodiment of the present invention;

[0030] Figure 6 (a) is an exploded view of the push-up block drive sheet assembly according to an embodiment of the present invention;

[0031] Figure 6 (b) is an axonometric view of the push-up block drive sheet assembly according to an embodiment of the present invention;

[0032] Figure 7 (a) is an exploded view of the push-up block assembly according to an embodiment of the present invention;

[0033] Figure 7 (b) is an axonometric view of the push-up block assembly according to an embodiment of the present invention;

[0034] Figure 8 (a) is an exploded view of the push-down block assembly according to an embodiment of the present invention;

[0035] Figure 8 (b) is an axonometric view of the push-down block assembly according to an embodiment of the present invention;

[0036] Fig. 9 An exploded view of a second door lock according to an embodiment of the present invention;

[0037] Fig.10 It is a front view of a second door lock according to an embodiment of the present invention;

[0038] Fig.11 It is an axonometric view of the second lower lock housing assembly of an embodiment of the present invention;

[0039] Fig.12 (a) is a front isometric view of a square tongue transmission plate according to an embodiment of the present invention;

[0040] Fig.12 (b) is a reverse isometric view of the square tongue transmission plate according to an embodiment of the present invention;

[0041] Fig.13 It is a front view of a square tongue according to an embodiment of the present invention;

[0042] Fig.14 It is an axonometric view of the upper rod seat assembly according to an embodiment of the present invention.

[0043] Reference numerals:

[0044] First door lock 1; Second door lock 2;

[0045] First lower lock housing assembly 100; first lower lock housing 101; locking stud 102; guide lock pin 103; pin shaft 104; first upper lock housing 110; first panel 120; first panel fixing piece 121;

[0046] Rotating wheel 200;

[0047] Upper tie rod seat transmission plate assembly 300; upper tie rod seat transmission plate 310; upper tie rod seat connecting plate 320; first washer 311; shift block positioning pin 312; rivet shaft 313; rivet 314; upper tie rod seat 330;

[0048] Upper push block drive plate assembly 400; upper push block drive plate 410; drive plate transmission seat 420; upper push block assembly 430; upper push block 431; upper push block connecting plate 432; lower push block assembly 440; lower push block 441; lower push block connecting plate 442; pin 443; lower push block spring 444; spring 450; spring guide rod 455;

[0049] The lower pull rod seat 500; the lower pull rod seat transmission sheet 510; the lower plug rod 520; the upper plug rod 530; the upper plug rod seat assembly 540; the upper plug rod seat panel 541; the first upper plug rod seat sliding block 542; the second upper plug rod seat sliding block 543; the upper plug rod seat spring 544; the upper plug rod seat fixing sleeve 545; the upper plug rod seat bottom plate 546; the plug rod holder 550; the lower plug rod guide seat 560;

[0050] Push-down block transmission sheet assembly 600; Push-down block transmission sheet 610;

[0051] Second lower lock housing assembly 700; second lower lock housing 710; guide pin 720; second upper lock housing 740; second panel 750; second panel fixing piece 751;

[0052] Spring guide seat 800; spring guide pin 801; shift block 810; shift block positioning pin 811; dial wheel reset spring 820; spring guide block 821; oblique tongue 830; oblique tongue torsion spring 831; square tongue 840; square tongue block 841; square tongue connecting piece 842; square tongue torsion spring 843; pushing piece 844; square tongue transmission block 850; square tongue positioning block 860; positioning block torsion spring 861; inner dial wheel 870; outer dial wheel 871; washer 872; conversion block 880; first conversion block torsion spring 881; second conversion block torsion spring 882; spring positioning pin 883. DETAILED DESCRIPTION

[0053] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0054] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0055] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0056] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0057] Reference Figures 1 to 8 The embodiment of the first aspect of the present invention provides a mortise lock for a double-opening escape door, comprising a first door lock 1, the first door lock 1 is installed on the first door leaf of the double-opening escape door, the first door lock 1 comprises a first lock housing, the first lock housing comprises a first lower lock housing assembly 100 and a first upper lock housing 110, the first upper lock housing 110 is covered and installed on the first lower lock housing assembly 100. Figure 4 The first lower lock housing assembly 100 includes a first lower lock housing 101, a locking stud 102, a guide lock pin 103 and a pin 104. The first upper lock housing 110 is fixed to the first lower lock housing 101 by means of the locking stud 102 and bolts. Figure 2The first panel 120 is connected to the first lower lock shell 101. The first panel 120 has openings corresponding to the two cavities on the first lower lock shell 101, allowing the upper push block assembly 430 and the lower push block assembly 440 to extend. The first panel 120 is provided with a first panel fixing piece 121. The first panel 120 and the first lower lock shell 101 are fixedly installed by bolt connection through the first panel fixing piece 121. The first panel 120 is fixedly installed on the first door leaf to realize the installation of the first door lock 1 on the door. Figure 3 The upper pull rod seat transmission plate assembly 300 is rotatably connected to the upper part of the first lower lock shell 101 through the shift block positioning pin 312 installed on the first lower lock shell 101. The upper pull rod seat transmission plate assembly 300 includes an upper pull rod seat transmission plate 310 and an upper pull rod seat connecting plate 320. The upper pull rod seat connecting plate 320 has axial holes at both ends. A rivet 314 is installed through the axial hole at one end to be rotatably connected to the upper pull rod seat transmission plate 310, and the axial hole at the other end is rotatably connected to the rotating wheel 200 rotatably connected to the first lower lock shell 101 through a rotating shaft. The upper pull rod seat transmission plate 310 rotates with the shift block positioning pin 312 as the rotation center. When the rotating wheel 200 rotates, it drives the upper pull rod seat connecting plate 320 to move and then drives the upper pull rod seat transmission plate 310 to rotate. The upper part of the upper rod seat transmission plate 310 is connected to the upper rod seat 330 through a rivet shaft 313, and the rivet shaft 313 is fixedly installed on the upper part of the upper rod seat transmission plate 310. When the upper rod seat transmission plate 310 rotates, it drives the upper rod seat 330 located at the upper part of the first lower lock shell 101 to move linearly. It can be understood that when unlocking, the upper rod seat 330 moves downward, that is, the rotating wheel 200 rotates counterclockwise. Figure 3 The rotating wheel 200 has three extended portions extending outward in the radial direction, and the three extended portions are respectively connected to the upper push block driving plate assembly 400, the upper pull rod seat connecting plate 320 and the lower pull rod seat transmission plate 510 through hinges.

[0058] The upper push block driving piece assembly 400 is arranged at the upper part of the first lower lock shell 101, and includes an upper push block driving piece 410 and a driving piece transmission seat 420. The driving piece transmission seat 420 is arranged at the bottom of the upper push block driving piece 410 and is movably connected with the rotating wheel 200. The upper push block driving piece 410 is provided with an inclined groove, and the upper push block driving piece 410 is slidably connected with the upper push block assembly 430 through the inclined groove. When the rotating wheel 200 rotates counterclockwise, the upper push block driving piece 410 moves linearly downward, and the upper push block assembly 430 extends outward from the first door lock under the action of the inclined groove; at the same time, the rotating wheel 200 pushes the lower pull rod seat transmission piece 510 to move linearly upward, pulling the lower pull rod seat 500 to move linearly upward.

[0059] The push-down block transmission sheet assembly 600 includes a push-down block transmission sheet 610, which is preferably a triangular metal sheet. The right end of the push-down block transmission sheet 610 is movably connected to the lower pull rod seat 500 through the rivet shaft 313, the left end is movably connected to the push-down block assembly 440 through the pin shaft 443, and the upper end is rotatably connected to the first lower lock shell 101 through the pin shaft 104 and rotates around the pin shaft 104. When the lower pull rod seat 500 moves linearly upward, the push-down block transmission sheet 610 is driven to rotate counterclockwise, and the push-down block transmission sheet 610 drives the push-down block assembly 440 to move linearly toward the outside of the first door lock.

[0060] The push-down block assembly 440 is arranged at the lower part of the first door lock, and includes a push-down block 441, a push-down block connecting piece 442 and a push-down block spring 444. The two ends of the push-down block spring 444 connect the push-down block 441 and the push-down block connecting piece 442, and are used for buffering when the push-down block assembly 440 is unlocked, which is conducive to reducing impact noise and improving durability. At the same time, the push-down block connecting piece 442 limits the push-down block 441 through the rivet 314, and keeps the linear movement of the push-down block 441 within a preset range.

[0061] The lower pull rod seat 500 is arranged at the lower part of the first door lock, and the lower part of the lower pull rod seat 500 is connected to the lower part of the lower plug rod 520. When the first door leaf is in the locked state, the lower plug rod 520 is inserted into the door frame to fix the door leaf. The bottom of the second door leaf is also provided with a lower plug rod guide seat 560 for guiding the lower plug rod 520, which is conducive to the lower plug rod 520 to maintain a stable position and can be smoothly inserted into the door frame. On the other hand, the top and bottom of the door frame are respectively provided with a plug rod holder 550 for accommodating the upper plug rod 530 and the lower plug rod 520, which is used to cooperate with the upper plug rod 530 and the lower plug rod 520 when locking.

[0062] The upper part of the upper rod seat 330 is connected to an upper insertion rod 530. When the first door leaf is in the locked state, the upper insertion rod 530 is inserted into the door frame to fix the door leaf. Fig.14The upper part of the upper plug rod 530 is provided with an upper plug rod seat assembly 540, which is installed on the top of the first door leaf, including an upper plug rod seat panel 541, a first upper plug rod seat sliding block 542, a second upper plug rod seat sliding block 543, an upper plug rod seat spring 544, an upper plug rod seat fixing sleeve 545, and an upper plug rod seat bottom film 546. The upper plug rod seat panel 541 is fixed to the top of the first door leaf by bolt connection, and the upper plug rod seat fixing sleeve 545 is connected to the upper plug rod seat panel by welding or bolting. Below 541, the upper rod seat fixing sleeve 545 is provided with a first upper rod seat sliding block 542 and a second upper rod seat sliding block 543 arranged on both sides, and an upper rod seat spring 544 is provided at the bottom of the upper rod seat fixing sleeve 545. The top of the upper rod seat spring 544 supports the first upper rod seat sliding block 542 and the second upper rod seat sliding block 543, and the bottom contacts the upper rod seat bottom film 546. The upper rod seat bottom film 546 and the upper rod seat fixing sleeve 545 can be fixed by bolt connection or snap-fitting. The first upper rod seat sliding block 542 and the second upper rod seat sliding block 543 have a first inclined surface in the direction of closing the first door leaf, and the first inclined surface is conducive to easily pressing the first upper rod seat sliding block 542 and the second upper rod seat sliding block 543 downward when the first door leaf is closed. At the same time, the first upper insertion rod seat sliding block 542 and the second upper insertion rod seat sliding block 543 have a second inclined surface on the opposite side, and the second inclined surface cooperates with the inclined surface inside the upper insertion rod seat fixing sleeve 545. When the first upper insertion rod seat sliding block 542 and the second upper insertion rod seat sliding block 543 are compressed downward, the two are separated to both sides under the guidance of the second inclined surface, and the gap between the first upper insertion rod seat sliding block 542 and the second upper insertion rod seat sliding block 543 becomes larger; when the first upper insertion rod seat sliding block 542 and the second upper insertion rod seat sliding block 543 leave the door frame and protrude upward under the elastic support of the upper insertion rod seat spring 544, the two are gathered toward the middle under the guidance of the second inclined surface, and the gap between the first upper insertion rod seat sliding block 542 and the second upper insertion rod seat sliding block 543 becomes smaller. Since the upper plug rod 530 is retracted into the upper plug rod seat fixing sleeve 545 when the door is open, the first upper plug rod seat sliding block 542 and the second upper plug rod seat sliding block 543 are retracted to limit the extension of the upper plug rod 530, so as to achieve closing the door at any time; when the first door leaf is closed, the first upper plug rod seat sliding block 542 and the second upper plug rod seat sliding block 543 are pressed down, and both fall and open, and the upper plug rod 530 automatically resets and extends upward and inserts into the plug rod holder 550 located at the upper part of the door frame, so as to achieve the locking of the first door leaf. It should be noted that when the first door leaf is closed but the upper plug rod 530 has not been inserted into the plug rod holder 550, the upper plug rod 530 will maintain the force on the door frame until the upper plug rod 530 is fully inserted into the plug rod holder 550. The automatic locking of the door leaf is achieved by a flexible and clever method, without manual locking, and it is easy to achieve good safety protection of the door leaf, which is simple and easy to use and is conducive to improving the user experience.

[0063] When the door is opened, the thumbwheel 200 is rotated by an external force. It can be understood that the thumbwheel 200 is provided with a rotating shaft and a handle (not shown in the figure), and the handle and the rotating shaft are fixedly connected to the thumbwheel 200. The user drives the thumbwheel 200 to rotate counterclockwise by turning the handle, and the thumbwheel 200 drives the upper pull rod seat transmission plate assembly 300 to rotate, and at the same time drives the upper push block drive plate assembly 400 to perform a linear motion downward and the lower pull rod seat transmission plate 510 to perform a linear motion upward, the upper pull rod seat transmission plate assembly 300 drives the upper pull rod seat 330 to retract downward, the upper push block drive plate assembly 400 drives the upper push block assembly 430 to extend toward the outside of the first door lock 1, and the lower pull rod seat transmission plate 510 drives the lower pull rod seat 500 to retract upward, that is, the upper plug rod 530 and the lower plug rod 520 are pulled out from the plug rod holder 550 of the door frame, thereby unlocking the first door leaf; at the same time, the lower pull rod seat 500 drives the lower push block transmission plate When the first door leaf is closed, the first upper plug rod seat sliding block 542 and the second upper plug rod seat sliding block 543 are pressed down to the inside of the upper plug rod seat fixing sleeve 545 and open to both sides, releasing the restriction on the upper plug rod 530, and the upper plug rod 530 moves linearly upward and is inserted into the plug rod holder 550, while the lower plug rod 520 moves linearly downward and is inserted into the plug rod holder 550, thereby locking the first door leaf.

[0064] Optionally, a spring 450 is provided at the lower portion of the upper push block drive plate assembly 400, and a spring guide rod 455 is provided inside the spring 450. The top of the spring 450 contacts the bottom of the drive plate transmission seat 420, which is used for automatic resetting of the upper push block drive plate assembly 400. When the first door leaf is closed, the upper insertion rod 530 is released from the restriction and extends upward, and the spring 450 is reset, pushing the upper push block drive plate assembly 400 to reset upward. At this time, the rotating wheel 200 follows and rotates clockwise, and the upper push block drive plate assembly 400 drives the upper push block assembly 430 to reset inside the first door lock 1. The rotating wheel 200 drives the lower pull rod seat transmission plate 510 and drives the lower pull rod seat 500 to move downward for resetting. The lower insertion rod 520 extends downward and is inserted into the insertion rod holder 550 in the door frame. The lower push block assembly 440 is reset to the first door lock 1 under the reset of the lower push block transmission plate assembly 600, and the first door lock 1 is locked.

[0065] Reference Figures 9 to 13The embodiment of the second aspect of the present invention provides a mortise lock for a double-opening escape door, comprising a second door lock 2, which is arranged on a second door leaf opposite to the first door leaf, and the second door lock 2 comprises:

[0066] The second lock housing includes a second lower lock housing assembly 700 and a second upper lock housing 740. The second upper lock housing 740 is covered and installed on the second lower lock housing assembly 700 through a locking stud 102. Fig.11 The second lower lock housing assembly 700 includes a second lower lock housing 710, a locking stud 102, a guide pin 720 and a guide lock pin 103. Fig.10 The second panel 750 is connected to the second lower lock housing 710 by bolts through the second panel fixing piece 751, and the second panel 750 is installed on the second door leaf by bolt connection. Fig. 9 The second panel 750 has openings corresponding to the two cavities on the second lower lock shell 710, allowing the oblique tongue 830 and the square tongue 840 to extend. The oblique tongue 830 is arranged at the upper part of the second door lock 2, and is slidably connected to the second lower lock shell assembly 700. An oblique tongue torsion spring 831 is arranged below the oblique tongue 830. It can be understood that the oblique tongue 830 has an inclined surface in the direction of closing the second door leaf, and the inclined surface helps to easily press the oblique tongue 830 into the second door lock 2 when the second door leaf is closed. At the same time, the oblique tongue 830 has a tail portion that is transmitted with the inner dial wheel 870, and a transmission hook is provided at the tail portion. When the inner dial wheel 870 rotates, the transmission hook is pulled to pull the oblique tongue 830 to move linearly.

[0067] The tongue assembly is arranged at the lower part of the second door lock 2 and is slidably connected with the second lower lock shell 710. The tongue assembly includes a push piece 844, a tongue 840 and a tongue transmission block 850. The push piece 844 is slidably connected with the tongue 840. The tongue transmission block 850 is slidably connected with the tongue 840. The push piece 844 and the tongue transmission block 850 are connected through a rivet shaft 313. A tongue torsion spring 843 is arranged below the tongue assembly. The tongue torsion spring 843 contacts the tongue transmission block 850. The tongue 840 includes a tongue block 841 and a tongue connecting piece 842. The tongue block 841 has a cavity inside. The cavity direction points from the tongue block 841 to the tongue connecting piece 842. The push piece 844 is located inside the cavity of the tongue block 841. The push piece 844 passes through the tongue block 841 and is connected with the tongue transmission block 850.

[0068] The square tongue positioning block 860 is arranged at one end of the square tongue assembly and contacts the square tongue connecting piece 842. The square tongue positioning block 860 is slidably connected to the second lower lock shell 710 and the square tongue assembly. A positioning block torsion spring 861 is provided above the square tongue positioning block 860. The positioning block torsion spring 861 is used to reset the square tongue positioning block 860 downward.

[0069] The inner dial 870 is rotatably connected to the second lower lock shell 710. A dial reset spring 820 is provided above the inner dial 870. A spring guide seat 800 is provided between the dial reset spring 820 and the inner dial 870. The dial reset spring 820 maintains a certain elastic thrust on the inner dial 870 through the spring guide seat 800 to ensure the reset of the inner dial 870. A spring guide block 821 fixedly mounted on the second lower lock shell 710 is provided on the outer side of the dial reset spring 820 to prevent the dial reset spring 820 from bending when compressed and failing to reset.

[0070] The outer dial wheel 871 is arranged adjacent to the inner dial wheel 870 and is rotatably connected to the second lower lock shell 710. A gasket 872 is arranged between the inner dial wheel 870 and the outer dial wheel 871. The gasket 872 is used to separate the inner dial wheel 870 from the outer dial wheel 871. The middle of the inner dial wheel 870 and the outer dial wheel 871 are both provided with an axial hole for connecting a handle (not shown in the figure). The handle rotates the inner dial wheel 870 and the outer dial wheel 871 through a rotating shaft. It should be noted that the inner dial wheel 870 is located on the side pointing to the closing direction of the second door leaf, and the outer dial wheel 871 is located on the other side opposite to the inner dial wheel 870. The inner dial wheel 870 and the outer dial wheel 871 are driven by handles located on both sides.

[0071] The shift block 810 is disposed below the inner dial wheel 870 and is rotatably connected to the second lower lock housing 710. The shift block 810 is provided with a rivet shaft and a shift block positioning pin 811. The shift block 810 is rotatably connected to the second lower lock housing 710 through the shift block positioning pin 811, and the square tongue transmission block 850 is shifted through the rivet shaft.

[0072] The conversion block 880 is rotatably connected to the inner dial wheel 870 and is located between the inner dial wheel 870 and the dial block 810. The conversion block 880 is provided with a first conversion block torsion spring 881, one end of which is mounted on the conversion block 88, and the other end is connected to the inner dial wheel 870. The lower part of the conversion block 880 contacts the second conversion block torsion spring 882 mounted on the dial block 810.

[0073] When the second door leaf is locked, the square tongue 840 and the push piece 844 extend out of the second door lock 2, the conversion block 880 is located at the first position, and the outer dial wheel 871 cannot drive the inner dial wheel 870 to rotate through the conversion block 880. During the unlocking process, when the inner dial wheel 870 is subjected to an external force and rotates in the clockwise direction, the inner dial wheel 870 drives the inclined tongue 830 to perform a linear motion toward the inside of the second door lock 2, and at the same time drives the shift block 810 to rotate in the counterclockwise direction. When the shift block 810 rotates, it pulls the square tongue transmission block 850 to move linearly toward the inside of the second door lock 2, and the square tongue transmission block 850 pushes the square tongue positioning block 860 to move linearly upward, releasing the limit on the square tongue 840. After the square tongue transmission block 850 moves a certain displacement, it contacts the square tongue 840 and pulls the square tongue 840 to move linearly in the same direction as the square tongue transmission block 850. At this time, the inclined tongue 830 and the square tongue 840 are both retracted into the second door lock 2, thereby unlocking the second door leaf and opening the second door leaf.

[0074] When the second door leaf is in an unlocked state, the square tongue 840 and the push piece 844 are located inside the second door lock, the conversion block 880 is located in the second position, and the outer dial wheel 871 can drive the inner dial wheel 870 to rotate through the conversion block 880, thereby pulling the oblique tongue 830 to retract into the second door lock to realize the opening of the second door leaf.

[0075] When the first door leaf and the second door leaf are closed and in a locked state, to unlock the first door leaf, rotate the rotating wheel 200, pull the upper push block assembly 430 to perform a linear motion and extend out of the first door lock 1, push the inclined tongue 830 to move linearly into the second door lock 2, and at the same time, the lower push block assembly 440 moves linearly and extends out of the first door lock 1, pushes the push piece 844 to retract into the second door lock. At this time, the square tongue positioning block 860 releases the position constraint on the square tongue 840, and the square tongue transmission block 850 moves a certain distance and then drives the square tongue 840 to retract into the second door lock 2, thereby realizing simultaneous unlocking of the first door leaf and the second door leaf.

[0076] When the second door leaf is closed and in the unlocked state, the oblique tongue 830 extends out of the second door lock 2, and the square tongue transmission block 850 is moved linearly to the outside of the second door lock 2 by a special key or locking tool (not shown in the figure), and the square tongue transmission block 850 drives the square tongue positioning block 860 to move linearly upward, releasing the position constraint on the square tongue 840, and the square tongue transmission block 850 pushes the square tongue 840 to move linearly toward the outside of the second door lock 2. After the square tongue 840 is extended, the block returns from the second position to the first position, and the outer dial wheel 871 cannot drive the inner dial wheel 870 to rotate through the conversion block 880. At the same time, the square tongue positioning block 860 moves downward under the action of the positioning block torsion spring 861, restricting the movement of the square tongue 840, and realizing the locking of the second door leaf. The unlocking of the second door leaf can realize the unlocking of the double-opening escape door, and can realize the rapid opening of the door in an emergency, improve the escape efficiency, and reduce personal injury.

[0077] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0078] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A mortise lock for a double-opening escape door, applied to a double-opening escape door, the double-opening escape door comprising a first door leaf and a second door leaf, characterized in that: include: A first door lock (1), arranged on the first door leaf; The first door lock (1) comprises: An upper pull rod seat (330) is arranged on the upper part of the first door lock (1); A rotating wheel (200) is rotatably connected to the interior of the first door lock (1) and is movably connected to the upper pull rod seat (330); A lower pull rod seat (500) is provided at the lower part of the first door lock (1) and is movably connected to the rotating wheel (200); a lower insertion rod (520) is connected to the lower part of the lower pull rod seat (500); An upward push block assembly (430) is disposed on the upper portion of the first door lock (1) and is movably connected to the rotating wheel (200); A push-down block assembly (440) is disposed at the lower portion of the first door lock (1) and is movably connected to the pull-down rod seat (500); A door plug assembly, comprising an upper door plug assembly and a lower door plug assembly, wherein the upper door plug assembly is fixedly connected to the upper pull rod seat (330), and the lower door plug assembly is fixedly connected to the lower pull rod seat (500); the upper door plug assembly comprises an upper plug rod (530) and an upper plug rod seat assembly (540), and the upper plug rod seat assembly (540) is arranged at the top of the double-opening escape door; the upper plug rod seat assembly (540) comprises an upper plug rod seat fixing sleeve (545), an upper plug rod seat spring (544), a first upper plug rod seat sliding block (542) and a second upper plug rod seat sliding block (543 ), the first upper insertion rod seat sliding block (542) and the second upper insertion rod seat sliding block (543) have a first inclined surface in the direction of closing the first door leaf, the first inclined surface is conducive to easily pressing the first upper insertion rod seat sliding block (542) and the second upper insertion rod seat sliding block (543) downward when the first door leaf is closed, and the first upper insertion rod seat sliding block (542) and the second upper insertion rod seat sliding block (543) have a second inclined surface on the side opposite to each other, and the second inclined surface cooperates with the inclined surface inside the upper insertion rod seat fixing sleeve (545); The rotating wheel (200) is rotated to drive the upper rod seat (330) to retract into the interior of the first door lock (1), and at the same time drive the lower rod seat (500) to retract. At the same time, the lower rod seat (500) drives the push-down block assembly (440) to move to the outside of the first door lock (1), and the door plug assembly retracts to realize the unlocking function. The first door leaf is opened, and the first upper plug-in rod seat sliding block (542) and the second upper plug-in rod seat sliding block (543) leave the door frame and protrude upward under the elastic support of the upper plug-in rod seat spring (544). The two are retracted toward the middle under the guidance of the second inclined surface, and the gap between the first upper plug-in rod seat sliding block (542) and the second upper plug-in rod seat sliding block (543) becomes smaller, thereby limiting the extension of the upper plug-in rod (530). The upper plug-in rod seat assembly (540) locks the upper plug-in rod (530); When the first door leaf is closed, the first upper insertion rod seat sliding block (542) and the second upper insertion rod seat sliding block (543) are compressed downwards, and the two are separated to both sides under the guidance of the second inclined surface, and the gap between them becomes larger, and the upper insertion rod seat assembly (540) releases the lock on the upper insertion rod (530), and the upper insertion rod (530) and the lower insertion rod (520) extend to the outside of the first door lock (1), thereby realizing the locking function.

2. A mortise lock for a double-opening escape door according to claim 1, characterized in that: An upper push block driving sheet assembly (400) movably connected to the rotating wheel (200) and the upper push block assembly (430) is provided between the rotating wheel (200) and the upper push block assembly (430). When the rotating wheel (200) rotates, it drives the upper push block driving sheet assembly (400) and further pulls the upper push block assembly (430) to move.

3. The mortise lock for a double-opening escape door according to claim 1, characterized in that: An upper rod seat transmission plate assembly (300) movably connected to the rotating wheel (200) and the upper rod seat (330) is provided between the rotating wheel (200) and the upper rod seat (330). The upper rod seat transmission plate assembly (300) is composed of an upper rod seat transmission plate (310) and an upper rod seat connecting plate (320). The upper rod seat transmission plate (310) is rotatably connected to the upper rod seat connecting plate (320).

4. The mortise lock for a double-opening escape door according to claim 1, characterized in that: A push-down block transmission sheet assembly (600) movably connected to the push-down block assembly (440) and the pull-down rod seat (500) is provided between the push-down block assembly (440) and the pull-down rod seat (500). The push-down block transmission sheet assembly (600) is rotatably connected to the first door lock (1).

5. The mortise lock for a double-opening escape door according to claim 1, characterized in that: The push-down block assembly (440) comprises a push-down block (441), a push-down block connecting piece (442) and a push-down block spring (444), wherein the push-down block spring (444) realizes elastic connection between the push-down block (441) and the push-down block connecting piece (442).

6. A mortise lock for a double-opening escape door, applied to a double-opening escape door, the double-opening escape door comprising a first door leaf and a second door leaf, the first door leaf being provided with a first door lock, the first door lock comprising a rotating wheel (200), an upper push block assembly (430) and a lower push block assembly (440), characterized in that: include: A second door lock (2) is provided on the second door leaf opposite to the first door leaf; The second door lock (2) comprises: a second lock housing, the second lock housing comprising a second lower lock housing assembly (700) and a second upper lock housing (740); A latch bolt (830) slidably connected to the upper portion of the second door lock (2); A tongue assembly, slidably connected to the lower part of the second door lock (2); An inner dial wheel (870) rotatably connected to the inside of the second door lock (2); An outer dial wheel (871) is arranged adjacent to the inner dial wheel (870) and is rotatably connected to the second door lock (2); A shift block (810), located below the inner shift wheel (870) and rotatably connected to the second lower lock shell (710); A conversion block (880), rotatably connected to the inner dial wheel (870); When the second door leaf is locked, the tongue assembly extends outward from the second door lock (2), the conversion block (880) is located at the first position, and the outer dial wheel (871) is disconnected from the inner dial wheel (870); The inner dial wheel (870) is rotated to drive the oblique tongue (830) to move toward the inside of the second door lock (2), and at the same time drive the dial block (810) to rotate, and when the dial block (810) rotates, it pulls the square tongue assembly to move toward the inside of the second door lock (2), thereby unlocking the second door leaf; When the second door leaf is unlocked, the tongue assembly is located inside the second door lock (2), the conversion block (880) is located at the second position, the outer dial wheel (871) is connected to the inner dial wheel (870) via the conversion block (880), and the second door leaf can be opened by rotating the outer dial wheel (871).

7. A mortise lock for a double-opening escape door according to claim 6, characterized in that: The first door leaf and the second door leaf are in a locked state. The rotating wheel (200) is rotated to drive the upper push block assembly (430) to extend out of the first door lock (1) and push the inclined tongue (830) to retract into the second door lock (2); the lower push block assembly (440) extends out of the first door lock (1) and pushes the square tongue assembly to retract into the second door lock (2), thereby achieving simultaneous unlocking of the first door leaf and the second door leaf.

8. The mortise lock for a double-opening escape door according to claim 6, characterized in that: The inner dial wheel (870) rotates under external force, driving the dial block (810) to rotate, thereby driving the conversion block (880) to rotate, and then the outer dial wheel (871) is connected to the inner dial wheel (870) through the conversion block (880).

9. The mortise lock for a double-opening escape door according to claim 6, characterized in that: When the second door leaf is in the unlocked state, the oblique tongue (830) extends out of the second door lock (2), the square tongue assembly is pushed to extend out of the second door lock (2), the shift block (810) returns from the second position to the first position, and the outer dial wheel (871) is disconnected from the inner dial wheel (870), thereby achieving the locking of the second door leaf.

10. The mortise lock for a double-opening escape door according to claim 6, characterized in that: The square tongue assembly comprises a push piece (844), a square tongue (840) and a square tongue transmission block (850); the push piece (844) is slidably connected to the square tongue assembly; the square tongue transmission block (850) is slidably connected to the square tongue (840); and the push piece (844) and the square tongue transmission block (850) are connected via a rivet shaft (313).

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