CN211923877U - Down-pressing hidden escape door lock structure - Google Patents

Abstract

The utility model discloses a push down hidden escape door lock structure, it includes first base and upper connecting rod, the middle part of upper connecting rod articulates in first base, the rear end of upper connecting rod articulates there is the first connecting block, the other end of first connecting block articulates there is the lower connecting rod, the rear end of lower connecting rod articulates in first base, the front end of upper connecting rod and the front end of lower connecting rod all extend to outside the first base, the front end of upper connecting rod and the front end of lower connecting rod are connected with upper lock tongue accessory and lower lock tongue subassembly through upper pull rod and lower pull rod respectively, upper lock tongue accessory, upper pull rod, lower lock tongue accessory and lower pull rod match and install in the inside of door frame; the lower end of the middle part of the lower connecting rod is connected with a second connecting block in an abutting mode, the second connecting block is connected into the first base in a sliding mode, the second connecting block is driven by the first handle to move upwards, and therefore the front end of the upper connecting rod and the front end of the lower connecting rod are close to each other in the up-down direction. The utility model discloses can hide the setting in the door frame with spring bolt actuating mechanism, not only beautifully but also be difficult to damage.

Description

Down-pressing hidden escape door lock structure

Technical Field

The utility model relates to a lock of fleing specifically is a push down hidden lock structure of fleing.

Background

The escape door is used for a safe escape checkpoint in emergency situations such as fire. The escape door lock is widely applied to escape doors, and the push-down escape door lock in the prior art realizes the opening of the escape door lock by pushing down to rotate a pressure rod so as to drive a mechanism in a lock shell to move and withdraw the lock shell or a top-bottom pin. However, the bolt driving mechanism of the existing press-down escape door lock is generally arranged outside the door frame, which not only affects the appearance, but also is easy to damage.

Disclosure of Invention

The present invention aims to solve at least one of the above-mentioned technical problems in the related art to a certain extent. Therefore, the utility model provides a push down hidden lock structure of fleing, this lock structure of fleing can hide the setting with spring bolt actuating mechanism in the door frame, not only beautifully but also be difficult to damage.

The escape door lock structure hidden by pressing down according to the embodiment of the utility model comprises a first base, an upper connecting rod is hinged in the first base, the middle part of the upper connecting rod is hinged in the first base through a first pin shaft, the rear end of the upper connecting rod is hinged with a first connecting block, the other end of the first connecting block is hinged with a lower connecting rod, the rear end of the lower connecting rod is hinged in the first base through a fifth pin shaft, the front ends of the upper connecting rod and the lower connecting rod extend out of the first base, the lower end of the middle part of the lower connecting rod is connected with a second connecting block in an abutting mode, the second connecting block is connected in the first base in a sliding mode, the second connecting block is connected with a first handle which is hinged in the first base, the second connecting block is driven by the first handle to move upwards, so that the front end of the upper connecting rod and the front end of the lower connecting rod are close to each other in the vertical direction; the upper lock tongue accessory is connected with the front end of the upper connecting rod through an upper pull rod, and the upper lock tongue accessory and the upper pull rod are installed inside a door frame in a matching mode; the lower spring bolt accessory is connected with the front end of the lower connecting rod through a lower pull rod, and the lower spring bolt accessory and the lower pull rod are installed inside the door frame in a matched mode.

According to the utility model discloses press hidden escape door lock structure has following technological effect at least: the front end through going up the connecting rod and the front end of lower connecting rod extend to outside first base, and the front end of going up the connecting rod is connected with through the upper link and locks the tongue accessory, and the front end of lower connecting rod is connected with down the tongue accessory through the lower link, the embodiment of the utility model provides a during the installation, fix first base on the middle part surface of door frame, at this moment, the front end of going up the connecting rod, go up the pull rod and lock the tongue accessory cooperation and hide and install in the inside upper end of door frame, the front end of lower connecting rod, lower link and the cooperation of lower tongue accessory are hidden and are installed in the inside lower extreme of door frame, and then make the spring bolt actuating mechanism of the lock of fleing hide inside the door frame, not only beautifully. Simultaneously the utility model discloses unblock easy operation, during the unblock, the user pushes down the one end of first handle, the other end upward movement of first handle drives second connecting block upward movement, the front end upward movement of connecting rod under the second connecting block promotes, the rear end upward movement of connecting rod is promoted through first connecting block to the connecting rod down simultaneously, make the front end downward movement of going up the connecting rod, the front end of connecting rod and the front end of connecting rod are close to each other on the upper and lower direction in the realization, and then make the tongue accessory of locking shrink downwards make the tongue accessory of locking upwards shrink down simultaneously, thereby reach the purpose of unblock. The linkage of the upper lock tongue accessory and the lower lock tongue accessory can be realized only by pressing down the handle, so that unlocking is performed, the escape door is convenient for a user to open quickly, and the escape function of the escape door is enhanced.

According to the utility model discloses a some embodiments, the protruding first boss that is equipped with of rear end terminal surface of second connecting block, the one end laminating of first handle in the lower extreme of first boss.

According to the utility model discloses a some embodiments, be provided with first extension spring in the first base, the one end of first extension spring connect in the lower extreme of second connecting block, the other end of first extension spring connect in first base.

According to some embodiments of the present invention, the upper lock tongue accessory includes an upper lock seat, an arc lock tongue is hinged to an upper portion of the upper lock seat through a second pin, the arc lock tongue is provided with a cavity, a first torsion spring is arranged in the cavity, the first torsion spring is connected to the second pin, a pull arm is hinged to a front end of the arc lock tongue, an upper lock bolt screw is hinged to a lower end of the pull arm, the lower end of the upper lock bolt screw is in threaded connection with one end of the upper pull rod, and the other end of the upper pull rod is hinged to a front end of the lower connecting rod; in the locking state, the upper end of the arc-shaped lock tongue extends out of the upper lock seat to be locked; and in an unlocking state, the first handle is pressed down, and the upper pull rod drives the arc-shaped lock tongue to rotate and be accommodated in the upper lock seat through the pull arm.

According to some embodiments of the present invention, the upper lock tongue accessory further comprises a hook arm hinged in the upper lock seat through a third pin shaft, the upper end of the hook arm is turned backwards to form a hook-shaped portion, and the middle portion of the circumferential surface of the arc lock tongue is recessed inwards to form a hook groove matched with the hook-shaped portion; the left side of arc spring bolt is provided with the insurance tongue, the upper end of insurance tongue sets up to slope forward, just the upper end of insurance tongue extends outside last lock seat, the insurance tongue passes through second round pin axle articulates in going up the lock seat, the left side terminal surface of insurance tongue is provided with first recess, be provided with the second torsional spring that is used for restoring to the throne in the first recess, the lower extreme of insurance tongue is the face that pushes away of tilt up to when locking, it promotes to push away the face collude shape portion and breaks away from out the catching groove.

According to some embodiments of the utility model, the right side of arc spring bolt is provided with the apical arm, the middle part of apical arm is passed through the third round pin axle articulate in go up the lock seat, the lower extreme of arc spring bolt is provided with the second recess, the upper end laminating of apical arm in the inner wall of second recess, the lower extreme lateral wall of apical arm is provided with the arc guide way, the lateral wall that goes up the lock seat corresponds the position of arc guide way is provided with first waist shape hole, pass for the fourth round pin axle the arc guide way with first waist shape hole is connected.

According to the utility model discloses a some embodiments, the spring bolt accessory includes down the lock seat down, be provided with the hexagonal bolt down in the lock seat, the upper end of hexagonal bolt is provided with the screw thread section, the screw thread section with the one end threaded connection of lower link, the other end of lower link with the front end of lower connecting rod is articulated.

According to the utility model discloses a some embodiments, the diameter of screw thread section is less than the diameter of hexagonal bolt, first spring has been cup jointed to the screw thread section, the one end butt of first spring in lock seat down, the other end butt in the upper end terminal surface of hexagonal bolt.

According to the utility model discloses a some embodiments still are in including setting up the second base on the left side of first base or right side, sliding connection has the third connecting block in the second base, the third connecting block is connected with the second handle, the one end of second handle articulates in the second base, the third connecting block is upwards moved by the drive of second handle, first handle with through compression bar connection between the second handle.

According to some embodiments of the invention, the first base and the second base are respectively covered with a first lock case and a second lock case having a sealing protection.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic front view of the embodiment of the present invention assembled on a door frame;

fig. 2 is a left side view schematic diagram of the embodiment of the present invention assembled on a door frame;

fig. 3 is a schematic front view of the embodiment of the present invention;

fig. 4 is a left side view structure diagram of the embodiment of the present invention;

fig. 5 is an exploded view of an embodiment of the present invention;

FIG. 6 is an exploded view of the lower latch fitting of the embodiment of the present invention;

fig. 7 is a schematic view of an assembly structure of an upper connecting rod, a lower connecting rod, a first connecting block, a second connecting block and a first handle according to an embodiment of the present invention;

fig. 8 is a schematic view of an assembly structure of the upper connecting rod, the lower connecting rod, the first connecting block, the second connecting block, the first handle and the first base according to the embodiment of the present invention;

fig. 9 is an exploded view of the latch assembly of the embodiment of the present invention;

fig. 10 is a schematic structural view of an arc-shaped bolt according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a safety tongue according to an embodiment of the present invention.

Reference numerals:

110-a first base, 120-an upper connecting rod, 130-a first pin shaft, 140-a first connecting block, 150-a lower connecting rod, 160-a fifth pin shaft, 170-a second connecting block, 171-a first boss, 172-a U-shaped opening, 173-a first sliding block, 174-a circular table, 180-a first tension spring and 190-a first lock shell;

210-first handle, 230-second handle, 240-pressure bar;

300-upper lock tongue accessory, 310-upper lock seat, 311-first waist-shaped hole, 321-second pin shaft, 322-third pin shaft, 323-fourth pin shaft, 330-arc lock tongue, 331-cavity, 332-hook groove, 333-second groove, 340-first torsion spring, 350-pull arm, 360-upper lock bolt screw, 370-safety tongue, 371-first groove, 372-second torsion spring, 373-push surface, 380-hook arm, 381-hook part, 390-top arm and 391-arc guide groove;

400-lower lock tongue accessory, 410-lower lock seat, 420-hexagonal bolt, 421-thread section and 430-first spring;

510-upper pull rod, 520-lower pull rod;

610-a second base, 620-a third connecting block, 630-a third lock shell;

700-a door frame;

810-an upper fixing piece, 811-a first connecting lug, 820-a lower fixing piece and 821-a second connecting lug.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the positional or orientational descriptions, such as "upper", "lower", "front", "rear", "left", "right", etc., are referred to the positional or orientational relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the description of the present invention, if there are descriptions of "first", "second", "third", "fourth", "fifth", etc., these are only used for distinguishing technical features, and they are not to be interpreted as indicating or implying relative importance or implying number of indicated technical features or implying order of indicated technical features.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 9, a downward-pressing hidden escape door lock structure according to an embodiment of the present invention includes a first base 110, an upper latch fitting 300 and a lower latch fitting 400, an upper link 120 is hinged in the first base 110, a middle portion of the upper link 120 is hinged in the first base 110 by a first pin 130, a first connecting block 140 is hinged at a rear end of the upper link 120, another end of the first connecting block 140 is hinged with a lower link 150, a rear end of the lower link 150 is hinged in the first base 110 by a fifth pin 160, a front end of the upper link 120 and a front end of the lower link 150 both extend out of a front end of the first base 110, a lower end of a middle portion of the lower link 150 abuts against a second connecting block 170, the second connecting block 170 is slidably connected in the first base 110, the second connecting block 170 is connected with a first handle 210, the first handle 210 is hinged in the first base 110, the second connecting block 170 is driven by the first handle 210 to move upward, so that the front end of the upper link 120 and the front end of the lower link 150 are close to each other in the up-down direction; the upper latch fitting 300 is connected with the front end of the upper connecting rod 120 through an upper pull rod 510, and the upper latch fitting 300 and the upper pull rod 510 are installed inside the door frame 700 in a matching manner; the lower latch fitting 400 is connected to the front end of the lower link 150 by a lower link 520, and the lower latch fitting 400 and the lower link 520 are installed inside the door frame 700 in a matched manner.

Compared with the prior art, the embodiment of the utility model provides a front end through going up connecting rod 120 and lower connecting rod 150's front end extends to the front end of first base 110 off-plate, and goes up connecting rod 120's front end and is connected with spring bolt accessory 300 through upper pull rod 510, and lower connecting rod 150's front end is connected with lower spring bolt accessory 400 through lower pull rod 520, the utility model discloses during the installation, fix first base 110's preceding terminal surface at the middle part surface of door frame 700, at this moment, the front end of going up connecting rod 120, upper pull rod 510 and the cooperation of locking bolt accessory 300 are hidden and are installed in the inside upper end of door frame 700, and lower connecting rod 150's front end, lower pull rod 520 and lower spring bolt accessory 400 cooperate and hide and install in the inside lower extreme of door frame 700, and then make the spring bolt actuating mechanism of the lock of fleing hide inside door frame 700, not only. Simultaneously the utility model discloses unblock easy operation, during the unblock, the user pushes down first handle 210's one end, first handle 210's other end upward movement drives second connecting block 170 upward movement, second connecting block 170 promotes down connecting rod 150's front end upward movement, connecting rod 150 promotes the rear end upward movement of connecting rod 120 through first connecting block 140 down simultaneously, make the front end downward movement of connecting rod 120, the front end of connecting rod 120 and the front end of connecting rod 150 are close to each other on upper and lower direction in the realization, and then make the downward shrink of tongue accessory 300 of locking make tongue accessory 400 upwards shrink down simultaneously, thereby reach the purpose of unblock. The linkage of the upper bolt fitting 300 and the lower bolt fitting 400 can be realized only by pressing down the handle, so that unlocking is performed, the escape door can be quickly opened by a user conveniently, and the escape function of the escape door is enhanced. Specifically, as shown in fig. 7, one end of the first connecting block 140 is hinged to the rear end of the upper connecting rod 120, the other end of the first connecting block is hinged to the middle of the lower connecting rod 150, the lower end of the middle of the lower connecting rod 150 abuts against the second connecting block 170, a U-shaped opening 172 is formed in the upper end of the second connecting block 170, and the lower end of the middle of the lower connecting rod 150 abuts against the inner wall of the U-shaped opening 172, so that when the lock is unlocked, the front end of the lower connecting rod 150 is smoothly lifted up by the second connecting block. To be more specific, as shown in fig. 5, a first sliding groove is formed in the first base 110, a first sliding block 173 extends from the left side and the right side of the second connecting block 170, and the first sliding block 173 is slidably engaged with the first sliding groove to slidably connect the second connecting block 170 to the first base 110.

As shown in fig. 5 and 7, in some embodiments of the present invention, a first boss 171 is convexly disposed on a rear end surface of the second connecting block 170, and one end of the first handle 210 is attached to a lower end of the first boss 171. Set up like this, when carrying out the unblock, the user pushes down the one end of first handle 210, and the other end of first handle 210 rises to promote first boss 171 rebound at the in-process that rises, and then the realization lifts up second connecting block 170, makes the utility model discloses the structure is more miniaturized. Specifically, a third groove is provided below the first boss 171, and one end of the first handle 210 is fitted in the third groove. In the unlocking process, the third groove guides and limits one end of the first handle 210, and the first handle 210 is prevented from moving in the left-right direction in the process of lifting the first boss 171, so that the unlocking is not smooth.

As shown in fig. 5, in some embodiments of the present invention, a first extension spring 180 is disposed in the first base 110, one end of the first extension spring 180 is connected to the lower end of the second connecting block 170, and the other end of the first extension spring 180 is connected to the first base 110. After the unlocking is completed, when the user removes the applied force applied to the first handle 210, the first tension spring 180 is elastically restored to drive the second connecting block 170 to move downwards, so that the automatic resetting of the first handle 210 is realized. Specifically, a circular truncated cone 174 protrudes from the lower end of the side wall of the second connecting block 170, and the circular truncated cone 174 facilitates connection of the first tension spring 180 and the second connecting block 170.

As shown in fig. 5 and 9, in some embodiments of the present invention, the upper locking tongue assembly 300 includes an upper locking seat 310, an arc-shaped locking tongue 330 is hinged to an upper portion of the upper locking seat 310 through a second hinge pin 321, the arc-shaped locking tongue 330 is provided with a cavity 331, a first torsion spring 340 is disposed in the cavity 331, the first torsion spring 340 is connected to the second hinge pin 321, a pull arm 350 is hinged to a front end of the arc-shaped locking tongue 330, an upper lock bolt screw 360 is hinged to a lower end of the pull arm 350, a lower end of the upper lock bolt screw 360 is connected to one end of an upper pull rod 510 in a threaded manner, and the other end of the upper pull rod 510 is hinged; in the locking state, the upper end of the arc-shaped bolt 330 extends out of the upper lock base 310 to be locked; in the unlocked state, the first handle 210 is pressed down, and the upper pull rod 510 drives the arc-shaped locking tongue 330 to rotate and be accommodated in the upper lock holder 310 through the pull arm 350. Set up like this, in the unblock in-process, push down first handle 210, first handle 210 drives the front end downstream of upper connecting rod 120, and upper connecting rod 120 passes through pull rod 510 pull-down arm 350 simultaneously, and arm 350 drives arc spring bolt 330 and overcomes the elasticity of first torsional spring 340 and accomodate in last lock seat 310 around second round pin axle 321 forward rotation to the realization breaks away from arc spring bolt 330 out the lockhole that corresponds and unlocks. When locking, press down first handle 210 and promote arc spring bolt 330 to the position of the lockhole that corresponds, the user removes the pressing force of exerting on first handle 210, and arc spring bolt 330 reverses under the effect of the elastic recovery power of first torsion spring 340, and the upper end of arc spring bolt 330 stretches out again and goes out the outer and cooperation realization of locking with the hole site that corresponds of last lock seat 310. Specifically, the upper lock base 310 is connected to the door frame 700 through an upper fixing plate 810, an upper end of the upper fixing plate 810 is turned outwards by 90 ° to form a first connecting lug 811, the first connecting lug 811 is provided with a third through hole, and a screw passes through the third through hole to be in threaded connection with an upper end of the door frame 700, so that the upper locking tongue fitting 300 is fixed in the door frame 700.

As shown in fig. 9, 10 and 11, the upper latch fitting 300 further includes a hook arm 380 hinged in the upper latch base 310 through a third pin 322, an upper end of the hook arm 380 is turned backwards to form a hook-shaped portion 381, and a hook groove 332 matching with the hook-shaped portion 381 is formed in the middle of the circumferential surface of the arc-shaped latch 330 by being recessed inwards; the left side of arc-shaped spring bolt 330 is provided with insurance tongue 370, the upper end of insurance tongue 370 sets up to slope forward, and outside the upper end of insurance tongue 370 extends out of last lock seat 310, insurance tongue 370 articulates in last lock seat 310 through second round pin axle 321, the left side terminal surface of insurance tongue 370 is provided with first recess 371, be provided with the second torsional spring 372 that is used for resetting in the first recess 371, the lower extreme of insurance tongue 370 is tilt up's push surface 373 to when locking, push surface 373 promotes the collusion portion 381 and breaks away from out the colluding groove 332. Be provided with the groove 332 through the middle part at arc lock tongue 330's global, when the unblock, the single arm-drag 350 drives arc lock tongue 330 and overcomes the elasticity of first torsional spring 340 and forward rotate around second round pin axle 321, make arc lock tongue 330 accomodate completely in last lock seat 310, hook groove 332 rotates to the position that corresponds hook-shaped portion 381 simultaneously, hook-shaped portion 381 joint is in hook groove 332, remove the pressing force of applying on first handle 210 this moment, arc lock tongue 330 can not stretch out lock seat 310 in the automatic reversal under the elastic restoring force of first torsional spring 340, and lock tongue accessory 400 also can not be after removing the pressing force of applying on first handle 210 outside the automatic door frame 700 that stretches out down. Even after the user removes the pressing force applied to the first handle 210, the arc-shaped bolt 330 and the lower bolt fitting 400 still cannot be extended, so that the user does not need to press the first handle 210 all the time when the escape door is opened, and the operation is more labor-saving. When the door is locked, the escape door is pushed to close, when the upper end of the safety bolt 370 is pushed by the wall body of the installation door frame 700, the safety bolt 370 rotates around the second pin 321 to be contracted to the upper lock seat 310, at this time, the push surface 373 at the lower end of the safety bolt 370 can push the hook-shaped portion 381 to be separated from the hook groove 332 in the rotating process, so that the arc-shaped bolt 330 rotates reversely under the elastic restoring force of the first torsion spring 340, and the upper end of the arc-shaped bolt 330 extends out of the upper lock seat 310 again to be matched with the corresponding hole position to realize locking.

Furthermore, a top arm 390 is disposed on the right side of the arc-shaped locking tongue 330, the middle portion of the top arm 390 is hinged to the upper lock holder 310 through a third pin 322, a second groove 333 is disposed at the lower end of the arc-shaped locking tongue 330, the upper end of the top arm 390 is attached to the inner wall of the second groove 333, an arc-shaped guide groove 391 is disposed on the side wall of the lower end of the top arm 390, and a first kidney-shaped hole 311 is disposed at a position, corresponding to the arc-shaped guide groove 391, of the side wall of the upper lock holder 310, so that the fourth pin 323 passes through the arc-shaped guide groove 391 and is connected. Through the hinged top arm 390, in the locked state, the upper end of the top arm 390 is attached to the second groove 333 to limit the position of the arc-shaped bolt 330, and the arc-shaped bolt 330 is ensured to be accurately matched with the corresponding lock hole. The arc-shaped guide groove 391 is formed in the side wall of the lower end of the top arm 390, the side wall of the lower end of the pull arm 350 is correspondingly provided with a fourth through hole, and the fourth pin 323 passes through the arc-shaped guide groove 391 and the fourth through hole, so that the top arm 390 is linked with the pull arm 350. When unlocking is performed, the pull arm 350 is pulled down, the pull arm 350 drives the fourth pin 323 to move downwards along the first kidney-shaped hole 311, the fourth pin 323 is matched with the arc-shaped guide groove 391 in the downward movement process, the top arm 390 is driven to rotate around the third pin 322, the upper end of the top arm 390 is separated from the second groove 333, and the arc-shaped lock tongue 330 is smoothly rotated and contracted in the upper lock base 310 to perform unlocking.

As shown in fig. 5 and 6, in some embodiments of the present invention, the lower latch assembly 400 includes a lower latch seat 410, a hexagonal bolt 420 is disposed in the lower latch seat 410, a threaded section 421 is disposed at an upper end of the hexagonal bolt 420, the threaded section 421 is in threaded connection with one end of the lower link 520, and the other end of the lower link 520 is hinged to the front end of the lower link 150. Through hexagonal bolt 420, in the unlocking process, press first handle 210 down for hexagonal bolt 420 moves upward and breaks away from the corresponding jack and unlocks. When locking, close the emergency exits for when hexagonal bolt 420 removed the position that corresponds the jack, remove the pressing force of exerting on first handle 210, hexagonal bolt 420 removed downwards and stretches out outside door frame 700 and the cooperation of the jack that corresponds accomplishes and locks easy operation. Specifically, the lower lock base 410 is connected to the door frame 700 through a lower fixing plate 820, a lower end of the lower fixing plate 820 is turned outwards by 90 ° to form a second engaging lug 821, a fifth through hole is formed in the second engaging lug 821, and a screw passes through the fifth through hole and is in threaded connection with a lower end of the door frame 700, so that the lower latch fitting 400 is fixed in the door frame 700.

Further, the diameter of the threaded section 421 is smaller than the diameter of the hexagonal plug 420, the threaded section 421 is sleeved with the first spring 430, one end of the first spring 430 abuts against the lower lock seat 410, and the other end abuts against the upper end face of the hexagonal plug 420. Through having cup jointed first spring 430 at screw thread section 421, when locking, close the emergency exits for when hexagonal bolt 420 removed the position that corresponds the jack, remove the pressing force of exerting on first handle 210, hexagonal bolt 420 moves down under the effect of the elastic recovery power of first spring 430 and stretches out the door frame 700 outside and the jack cooperation that corresponds accomplishes and lock easy operation. And after last lock, first spring 430 provides certain holding down force for hexagonal bolt 420, further improves the utility model discloses the locking intensity of embodiment.

In some embodiments of the present invention, the device further comprises a second base 610 disposed on the left side or the right side of the first base 110, a third connecting block 620 is slidably connected in the second base 610, the third connecting block 620 is connected with the second handle 230, one end of the second handle 230 is hinged in the second base 610, the third connecting block 620 is driven by the second handle 230 to move upwards, and the first handle 210 and the second handle 230 are connected through a pressing rod 240. By providing the first handle 210 and the second handle 230 and connecting the pressure lever 240 between the first handle 210 and the second handle 230, the structure requires less pressing force when unlocking compared with the structure in which one handle is provided for pressing and unlocking, and the pressure lever 240 provides a larger force application position, so that when the force of a single user is insufficient to press the pressure lever 240, the two people can apply pressing force together to unlock the pressure lever 240. The situation that the escape door cannot be opened to escape due to insufficient strength of a single user is avoided. Specifically, the third connecting block 620 has the same structure as the second connecting block 170, and the second base 610 has the same structure as the first base 110.

Further, the first base 110 and the second base 610 are covered with a first lock case 190 and a second lock case 630, respectively, having a sealing protection. The components mounted in the first chassis 110 and the second chassis 610 are prevented from being directly exposed to the air, easily damaged, and aesthetically unpleasing. Specifically, the first lock case 190 and the second lock case 630 are respectively provided with a first through hole and a second through hole, and the first through hole and the second through hole are respectively used for the first handle 210 and the second handle 230 to pass through.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and those skilled in the art can make various modifications and variations; any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A push down hidden escape door lock structure, comprising:

the middle of the upper connecting rod (120) is hinged in the first base (110) through a first pin shaft (130), the rear end of the upper connecting rod (120) is hinged with a first connecting block (140), the other end of the first connecting block (140) is hinged with a lower connecting rod (150), the rear end of the lower connecting rod (150) is hinged in the first base (110) through a fifth pin shaft (160), the front end of the upper connecting rod (120) and the front end of the lower connecting rod (150) both extend out of the first base (110), the lower end of the middle of the lower connecting rod (150) is abutted with a second connecting block (170), the second connecting block (170) is slidably connected in the first base (110), the second connecting block (170) is connected with a first handle (210), and the first handle (210) is hinged in the first base (110), the second connecting block (170) is driven by the first handle (210) to move upwards, so that the front end of the upper connecting rod (120) and the front end of the lower connecting rod (150) are close to each other in the vertical direction;

the upper bolt accessory (300) is connected with the front end of the upper connecting rod (120) through an upper pull rod (510), and the upper bolt accessory (300) and the upper pull rod (510) are installed inside a door frame (700) in a matching mode;

the lower bolt fitting (400) is connected with the front end of the lower connecting rod (150) through a lower pull rod (520), and the lower bolt fitting (400) and the lower pull rod (520) are installed inside a door frame (700) in a matched mode.

2. The downward-pressing hidden escape door lock structure according to claim 1, wherein a first boss (171) is convexly provided on the rear end surface of the second connecting block (170), and one end of the first handle (210) is attached to the lower end of the first boss (171).

3. The escape door lock structure hidden by pressing down as claimed in claim 1 or 2, wherein a first tension spring (180) is disposed in the first base (110), one end of the first tension spring (180) is connected to the lower end of the second connecting block (170), and the other end of the first tension spring (180) is connected to the first base (110).

4. The escape door lock structure hidden by pressing down according to claim 1, wherein the upper bolt accessory (300) comprises an upper lock seat (310), an arc-shaped bolt (330) is hinged to the upper portion of the upper lock seat (310) through a second pin shaft (321), the arc-shaped bolt (330) is provided with a cavity (331), a first torsion spring (340) is arranged in the cavity (331), the first torsion spring (340) is connected to the second pin shaft (321), the front end of the arc-shaped bolt (330) is hinged to a pull arm (350), the lower end of the pull arm (350) is hinged to an upper lock bolt (360), the lower end of the upper lock bolt (360) is in threaded connection with one end of the upper pull rod (510), and the other end of the upper pull rod (510) is hinged to the front end of the lower connecting rod (150); in a locking state, the upper end of the arc-shaped bolt (330) extends out of the upper locking seat (310) to be locked; in an unlocking state, the first handle (210) is pressed downwards, the upper pull rod (510) drives the arc-shaped lock tongue (330) to rotate through the pull arm (350) and is accommodated in the upper lock seat (310).

5. The escape door lock structure hidden by pressing down as claimed in claim 4, wherein the upper latch bolt fitting (300) further comprises a hook arm (380) hinged in the upper lock base (310) through a third pin shaft (322), the upper end of the hook arm (380) is turned backwards to form a hook-shaped part (381), and the middle part of the circumferential surface of the arc-shaped latch bolt (330) is recessed inwards to form a hook groove (332) matched with the hook-shaped part (381); the left side of arc spring bolt (330) is provided with insurance tongue (370), the upper end of insurance tongue (370) sets up to the slope forward, just the upper end of insurance tongue (370) extends outside last lock seat (310), insurance tongue (370) pass through second round pin axle (321) articulate in last lock seat (310), the left side terminal surface of insurance tongue (370) is provided with first recess (371), be provided with second torsional spring (372) that are used for resetting in first recess (371), the lower extreme of insurance tongue (370) is tilt up's push away face (373), during the lock of the above, push away face (373) promotion collude shape portion (381) and break away from collude groove (332).

6. The downward-pressing hidden escape door lock structure according to claim 5, wherein a top arm (390) is disposed at a right side of the arc-shaped lock tongue (330), a middle portion of the top arm (390) is hinged to the upper lock base (310) through the third pin shaft (322), a second groove (333) is disposed at a lower end of the arc-shaped lock tongue (330), an upper end of the top arm (390) is attached to an inner wall of the second groove (333), an arc-shaped guide groove (391) is disposed at a lower end side wall of the top arm (390), and a first kidney-shaped hole (311) is disposed at a position of the side wall of the upper lock base (310) corresponding to the arc-shaped guide groove (391) so that a fourth pin shaft (323) passes through the arc-shaped guide groove (391) and is connected to the first kidney-shaped hole (311).

7. The downward-pressing hidden escape door lock structure according to claim 1, wherein the lower bolt fitting (400) comprises a lower lock seat (410), a hexagonal bolt (420) is arranged in the lower lock seat (410), a threaded section (421) is arranged at the upper end of the hexagonal bolt (420), the threaded section (421) is in threaded connection with one end of the lower pull rod (520), and the other end of the lower pull rod (520) is hinged to the front end of the lower connecting rod (150).

8. The downward-pressing hidden escape door lock structure according to claim 7, wherein the diameter of the threaded section (421) is smaller than the diameter of the hexagonal bolt (420), the threaded section (421) is sleeved with a first spring (430), one end of the first spring (430) abuts against the downward-locking seat (410), and the other end abuts against the upper end face of the hexagonal bolt (420).

9. The downward-pressing hidden escape door lock structure according to claim 1, further comprising a second base (610) disposed on the left side or the right side of the first base (110), wherein a third connecting block (620) is slidably connected to the second base (610), a second handle (230) is connected to the third connecting block (620), one end of the second handle (230) is hinged in the second base (610), the third connecting block (620) is driven by the second handle (230) to move upwards, and the first handle (210) and the second handle (230) are connected through a pressing rod (240).

10. The door lock structure for escape hiding according to claim 9, wherein said first base (110) and said second base (610) are covered with a first lock case (190) and a second lock case (630) having a sealing protection, respectively.

Images