CN212271832U - Lockset capable of preventing dull tongue from falling out and glass door - Google Patents

Abstract

The utility model discloses a can prevent tool to lock and glass door that dull tongue falls out, this tool to lock includes: the lock comprises a lock body, a handle, a lock core, a transmission mechanism and a bolt mechanism, wherein the handle and the lock core are rotationally connected with the lock body; the transmission mechanism includes: the lock comprises a handle shifting piece, a dull tongue shifting piece and a dull lock fixing plate, wherein the handle shifting piece is arranged in a reciprocating rotating mode and is fixedly connected with a handle, the dull tongue shifting piece is arranged in a reciprocating rotating mode and is abutted to the handle shifting piece, the dull lock fixing plate is movably connected with the dull tongue shifting piece in a reciprocating mode, the dull tongue shifting piece is in sliding fit with the dull lock fixing plate, a guide column is arranged on the dull tongue shifting piece, a sliding groove is formed in the dull lock fixing plate, the sliding groove comprises an initial position and a locking position, and the guide column. The utility model provides a can prevent the problem that the spring bolt falls out when closing the door fast, solve the problem that leads to the performance of unblanking to descend after the handle is pushed down for a long time again.

Description

Lockset capable of preventing dull tongue from falling out and glass door

Technical Field

The utility model relates to a door and window hardware fitting technical field especially relates to a tool to lock and glass door.

Background

Most glass door mechanical locks on the market incorporate a lock and panel into a unitary structure that limits the flexibility of replacing the panel handle assembly. For solving the problem, the split type glass door lock body is provided in the prior art, and the split type glass door lock can be conveniently installed and can meet the combination requirements of different customers on panels of different styles.

Split type glass lock, on the one hand, when the door leaf was in the state of unblanking, when closing the door fast, the spring bolt was because the inertial force of closing the door fast, and the inner chamber of lock body is fallen out easily from. On the other hand, because the handle has the function of pushing down to unblank simultaneously and lifts the locking function, the handle of function like this, long-time back of using, the handle easily takes place the problem of droing, both can lead to pushing down the performance of unblanking to descend after the handle droops, influences pleasing to the eye again.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a tool to lock and glass door that can prevent dull tongue and fall out, the utility model provides a can prevent the problem that the spring bolt falls out when closing the door fast, solved the handle again and pushed down the problem of unblanking performance decline.

In order to solve the above problem, the first aspect of the present invention provides a lock capable of preventing stiff tongue from falling out, which cooperates with a lock catch box on a door frame, including:

the lock comprises a lock body, a handle, a lock core, a transmission mechanism and a bolt mechanism, wherein the handle and the lock core are rotationally connected with the lock body;

the transmission mechanism includes: the lock comprises a handle shifting piece, a dull tongue shifting piece, a dull lock fixing plate and a guide post, wherein the handle shifting piece is arranged in a reciprocating rotating mode and fixedly connected with a handle, the dull tongue shifting piece is arranged in a reciprocating rotating mode and adjacent to the handle shifting piece, the dull lock fixing plate is connected with the dull tongue shifting piece in a reciprocating movable mode and fixedly connected with a lock tongue mechanism, the dull tongue shifting piece is in sliding fit with the dull lock fixing plate, the dull lock shifting piece is provided with the guide post, the dull lock fixing plate is provided with a sliding groove, the sliding groove comprises an initial position and a locking position which are approximately vertical to the sliding groove, and the guide post;

when the door leaf is in a locking state, the lock cylinder is rotated to drive the deadbolt toggle piece to rotate, so that the guide column slides into an initial position from a locking position, and the deadbolt fixing plate is driven to drive the bolt mechanism to move towards a direction far away from the lock catch box, so that the bolt mechanism returns from the lock catch box into the lock body to complete unlocking;

when the door leaf is in an unlocking state, the handle is lifted upwards to drive the handle shifting piece to rotate and drive the deadbolt shifting piece to rotate, so that the guide column slides into a locking position from an initial position, and the deadbolt fixing plate is driven to drive the spring bolt mechanism to move towards a direction close to the lock catch box, so that the spring bolt mechanism is in plug-in fit with the lock catch box, and locking is completed.

The above technical scheme of the utility model has following profitable technological effect: the utility model realizes the problem that the spring bolt can be prevented from falling off when the door is closed quickly by arranging the inverted hook groove; in addition on the one hand, set up spacing post, forbid the handle to push down and unblank, solved the handle and pushed down the problem that unblank performance descends.

According to another aspect of the present invention, there is provided a glass door, including:

a door frame;

the door leaf is rotatably connected to the door frame;

according to the lockset, the lock body is fixed on the door leaf; and

the lock catch box is arranged on the doorframe and is provided with a lock tongue groove, and the lock tongue mechanism is movably inserted in the lock tongue groove so as to lock or unlock the door leaf and the doorframe.

The above technical scheme of the utility model has following profitable technological effect: the operation of switching from unlocking to locking of the door leaf and the door frame is convenient and quick; the transmission of the transmission mechanism can be smoothly carried out, and the space utilization rate is improved.

Drawings

FIG. 1 is a schematic view of a glass door frame and a glass door leaf according to an embodiment;

FIG. 2 is a schematic view of an embodiment of a lock assembly (with the door leaf in an unlocked state);

FIG. 3 is an exploded view of a portion of the latch of FIG. 2;

FIGS. 4a and 4b are schematic structural views of the deadbolt moving member and deadbolt fixing plate of the lock shown in FIG. 3;

FIG. 5 is a front view of FIG. 2;

FIG. 6 is a schematic side view of the structure of FIG. 5;

FIG. 7 is a schematic view of the lock assembly according to an embodiment (now the door leaf is in the first incomplete locking state);

FIG. 8 is a schematic view of the lock assembly according to an embodiment (the door leaf is in the second state of incomplete locking);

FIG. 9 is a schematic view of an embodiment of the lock assembly (with the door leaf in a fully locked position);

fig. 10 is a side view of fig. 9.

Reference numerals:

10. a lock; 20. a central shaft; 60. a door leaf; 70. a door frame; 80. a lock box; 81. a lock tongue groove; 100. a lock body; 101. a cavity; 110. a limiting column; 111. a first limit post; 112. a second limit post; 120. positioning blocks; 121. a slot; 200. a handle; 300. a transmission mechanism; 310. a handle shifting part; 311. a first body; 312. a first extension portion; 313. a second protruding portion; 320. a deadbolt toggle piece; 321. a guide post; 322. a bump; 323. a hook-shaped part; 324. a connecting portion; 330. a dead lock fixing plate; 331. a chute; 331a, initial bit; 331b, a lock bit; 332. positioning a groove; 333. a guide groove; 334. an inverted hook groove; 340. a lock cylinder; 340a, a lock hole; 341. a second body; 342. a third extension portion; 400. a latch bolt mechanism; 410. dull tongue; 411. mounting grooves; 412. an inner cavity; 420. a compensation component; 421. a compensation strip; 422. a strut; 423. a second elastic member; 430. a knuckle assembly; 431. a knuckle; 432. a third elastic member; 500. a first elastic member; 510. a first torsion portion; 520. a second torsion portion; 530. a third torsion portion; 600. handle reset spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Referring to fig. 1, fig. 1 shows a schematic view of a lock 10 capable of preventing a dead bolt from falling out according to an embodiment of the present invention, in which the lock 10 is installed on a door leaf 60 and is in insertion fit with a keeper 80 on a door frame 70 to lock the door leaf 60 on the door frame 70. Referring to fig. 2, the lock 10 includes a lock body 100, a handle 200, a lock cylinder 340, a transmission mechanism 300 and a latch mechanism 400, wherein the lock body 100 is fixedly connected to the door 60, the handle 200 and the lock cylinder 340 are rotatably connected to the lock body 100, the transmission mechanism 300 is disposed in the lock body 100 and is fixedly connected to the latch mechanism 400, and the latch mechanism 400 movably penetrates through the lock body 100 to be in insertion fit with the lock box 80.

By lifting the handle 200, the handle 200 drives the transmission mechanism 300 to rotate, and the transmission mechanism 300 can drive the latch bolt mechanism 400 to slide toward the direction close to the keeper 80, and push the latch bolt mechanism 400 into the keeper 80, so as to lock the door leaf 60 to the doorframe 70. When the handle 200 is located indoors, the lock 10 can be switched from the unlocking state to the locking state by lifting the handle 200, and the process of rapidly locking indoors is completed; when the handle 200 is located outdoors, the handle 200 is lifted, so that the lock 10 can be switched from the unlocked state to the locked state, and the process of locking from the outside of the door is completed.

In a specific embodiment, referring to fig. 2, the lock body 100 is a carrier of a handle 200, a lock cylinder 340, a transmission mechanism 300 and a latch mechanism 400, the lock body 100 is fixedly connected to the door leaf 60, the lock body 100 is provided with a cavity 101, and the transmission mechanism 300 and the latch mechanism 400 are both disposed in the cavity 101. Through this structure setting, the tool to lock 10 dismouting of being convenient for, in time change lock body 100 to with different handles 200, drive mechanism 300 and bolt mechanism 400 assembly.

In the present embodiment, the lock body 100 has a rectangular shape, and the lock body 100 is fixedly coupled to the door 60 by bolts. The latch bolt mechanism 400 is movably disposed in the accommodating cavity 101 of the lock body 100, and when the handle 200 is lifted, the handle 200 can drive the latch bolt mechanism 400 to move to the outside of the accommodating cavity 101 toward the side close to the keeper 80 and to be in plug-in fit with the keeper 80, so as to lock the door leaf 60. In the embodiment, the problem that the operation of a common glass door lock is complicated is solved by adding the function of quickly locking the reverse lifting handle.

Referring to fig. 2, the transmission mechanism 300 includes a handle shifting member 310, a deadbolt shifting member 320 and a deadbolt lock fixing plate 330. The handle shifting piece 310 can rotate in a reciprocating mode and is fixedly connected to the handle 200, the handle shifting piece 310 and the deadbolt shifting piece 320 are arranged adjacent to each other, the deadbolt shifting piece 320 is connected to the lock body 100 in a reciprocating mode, the deadbolt lock fixing plate 330 is fixedly connected with the deadbolt mechanism 400, and the deadbolt lock fixing plate 330 and the deadbolt shift piece 320 are movably connected. In this embodiment, the handle driver 310 is fixedly connected to the handle 200 through a square shaft, and in other embodiments, the handle 200 may not be fixedly connected through a square shaft, for example, the handle 200 may be fixedly connected through a special-shaped shaft.

Specifically, in an embodiment, referring to fig. 3, fig. 4a and fig. 4b, the deadbolt toggle 320 is convexly provided with a guiding post 321, and as shown in fig. 3 and fig. 7, the deadbolt fixing plate 330 is provided with a sliding slot 331, the sliding slot 331 includes an initial position 331a and a locking position 331b, and the guiding post 321 can slide back and forth in the sliding slot 331 and switch between the initial position 331a and the locking position 331 b.

When the door 60 and the door frame 70 are in the unlocked state, as shown in fig. 5, the handle 200 is lifted by an external force (the handle 200 rotates in the direction of the arrow shown in fig. 7), the handle 200 drives the handle shifting member 310 to rotate counterclockwise from the starting position (i.e., the current state of the handle shifting member 310 in fig. 6, which corresponds to the horizontal state of the handle 200 at this time), and in the starting position, the first protruding end 312 of the handle shifting member 310 abuts against the protrusion 322 of the deadbolt shifting member 320; in the process of rotating the handle shifting piece 310, the handle shifting piece 310 is always kept in butt joint with the dead bolt shifting piece; the lever handle 310 rotates to drive the deadbolt handle 320 to rotate clockwise, so that the guiding post 321 of the deadbolt handle 320 slides from the initial position 331a to the locking position 331b, and drives the deadbolt fixing plate 330 to drive the deadbolt mechanism 400 to slide towards the side direction close to the lock box 80, so that the deadbolt 410 is inserted into the lock box 80, as shown in fig. 9, thereby switching the door leaf 60 and the door frame 70 to the fully locked state, and the operation is convenient and fast.

When the door 60 and the door frame 70 are in the fully locked state, as shown in fig. 9, the mechanical key is inserted into the lock cylinder 340 and rotates the lock cylinder 340 to drive the deadbolt toggle member 320 to rotate, the guiding post 321 of the deadbolt toggle member 320 slides from the locking position 331b to the initial position 331a, and drives the deadbolt fixing plate to drive the latch bolt mechanism 400 to move toward a side away from the keeper 80, so that the latch bolt mechanism 400 returns from the keeper 80 to the lock body 100 to complete unlocking, see fig. 5, thereby switching the door 60 and the door frame 70 to the fully unlocked state, and the operation is convenient and fast.

It should be noted that, as shown in fig. 2, the deadbolt toggle 320 and deadbolt lock retainer plate 330 are in a stacked arrangement, which may be understood as a stacked and parallel arrangement.

In the present embodiment, referring to fig. 4a and 4b, the deadbolt moving part 320 has three protruding ends, wherein a guiding pillar 321 is protruded from a side (rear side) of the deadbolt moving part 320 close to the deadbolt lock fixing plate 330, a protrusion 322 is protruded from one end of the deadbolt moving part 320 far from the guiding pillar 321, and the guiding pillar 321 and the protrusion 322 are arranged in a longitudinally staggered manner, which can be understood that a line connecting the protrusion 322 and the guiding pillar 321 forms an offset angle with the longitudinal direction. Through the arrangement, the transmission between the handle shifting piece 310 and the deadbolt shifting piece 320, and the transmission between the deadbolt shifting piece 320 and the deadbolt lock fixing plate 330 can be smoothly carried out, and the space utilization rate is effectively improved.

In some embodiments, the handle toggle 310 includes a first body 311 and a first protrusion 312 extending radially from the first body 311. In this embodiment, the first body 311 is connected to the handle 200 through a square shaft, and the rotating handle 200 can drive the first protruding portion 312 to rotate, so that the first protruding portion 312 drives the deadbolt moving member 320 to rotate.

In one embodiment, the protrusion 322 is cylindrical, and the first protrusion 312 is curved on a side close to the guiding column 321, so that the protrusion 322 and the first protrusion 312 are not easily damaged, so as to better match the deadbolt moving member 320 and the handle moving member 310. In other embodiments, the bumps 322 may also be prism-shaped or have other irregular shapes.

In the unlocked state, referring to fig. 5, the handle toggle member 310 is in the start position, the first protruding portion 312 and the protrusion 322 are both in the start position, the first protruding end 312 (in the start position) of the handle toggle member 310 abuts against the protrusion 322 (in the start position) of the deadbolt toggle member 320, and the guide post 321 is in the initial position 331a of the guide slot 333.

In the fully locked state, referring to fig. 9, the first protruding portion 312 is reset to the starting position (for the purpose of resetting the handle 200 to the horizontal state), the protrusion 322 of the deadbolt toggle member 320 is in the abutting position, and at this time, the first protruding end 312 (in the starting position) of the handle toggle member 310 is not abutted with the protrusion 322 (in the abutting position) of the deadbolt toggle member 320, and the guide post 322 of the deadbolt toggle member 320 is in the locking position 331 b.

At the moment of completing the locking, referring to the incompletely locked state of fig. 8, the first protruding portion 312 is in the abutting position (corresponding to the lifting state of the handle 200), and the protrusion 322 of the deadbolt toggle member 320 is also in the abutting position, and at this time, the first protruding end 312 of the handle toggle member 310 and the protrusion 322 of the deadbolt toggle member 320 are still in the abutting position. After accomplishing locking in twinkling of an eye, refer to fig. 9, because handle reset spring 600's effect, handle reset spring 600 drives the handle and dials piece 310 and reset to the start position, drives the first portion 312 that stretches out that the handle was dialled the piece promptly and resets to the start position by the butt position.

In some embodiments, the handle pulling element 310 further includes a second protruding portion 313 and a third protruding portion 314 spaced apart from the second protruding portion 313, and the second protruding portion 313 and the third protruding portion 314 extend along the radial direction of the first body 311 and are spaced apart from the first protruding portion 312. In this embodiment, the lock body 100 is provided with the limiting column 110, when the handle shifting member 310 is located at the start position, the second extending portion 313 abuts against the limiting column 110, when the handle 200 is lifted, the second extending portion 313 rotates counterclockwise from the start position to be away from the limiting column 110 abutting against the second extending portion 313, the third extending portion 314 also rotates counterclockwise to be close to the limiting column 110 abutting against the third extending portion, and the handle shifting member 310 is limited to continue to rotate, so that the lifting locking action of the handle 200 is completed.

After the handle 200 finishes lifting and locking actions, the handle shifting piece 310 receives the resilience of the handle return spring 600, so that when the handle shifting piece 310 is located at the starting position, the handle 200 is reset to the horizontal state, namely the first extending part 312, the second extending part 313 and the third extending part 314 are all reset to the starting position, and the dead bolt shifting piece 320 is kept at the abutting position.

In one embodiment, the number of the positioning posts 110 is 1, and the positioning posts 110 are located between the second protrusion 313 and the third protrusion 314. When the door 60 is in the unlocked state, as shown in fig. 5, the stopper post 110 abuts against the second protruding portion 313, and the guide post 321 is positioned at the initial position 331a, in order to maintain the lever handle 200 in a horizontal state, so that the lever handle 200 does not have a sagging problem. When the door 60 is in the fully locked state, as shown in fig. 9, the handle driver 310 rotates to make the position-limiting post 110 abut against the third protruding portion 314, and the guiding post 321 slides from the initial position 331a to the locking position 331b, so as to complete the lifting and locking operation, i.e., the door locking operation is completed by lifting the handle 200.

In some embodiments, referring to fig. 4a and 4b, the sliding groove 331 includes a positioning groove 332, a guiding groove 333 and a barb groove 334, which are sequentially connected. In this embodiment, the guiding groove 333 is inclined with respect to the horizontal line, the positioning groove 332 forms an included angle with the guiding groove 333 and is located at the locking position 331b, and the barb groove 334 is approximately perpendicular to the guiding groove 333 and is located at the initial position 331 a.

Referring to fig. 2 and 5, when the door 60 is in the unlocked state, the guiding rod 321 is retained in the barbed groove 334. In the unlocked state, the undercut 334 is provided to prevent inertia from breaking free the tongue 410 when the door is closed quickly. Specifically, when the deadbolt lock is fully retracted into the lock housing (i.e., in the unlocked state, see fig. 5), the guide post 321 of the deadbolt toggle 320 slides into the undercut 334 at the guide slot 333 of the deadbolt lock retainer plate 330, limiting the movement of the deadbolt lock retainer plate 330 in the horizontal direction, i.e., effectively preventing the deadbolt 410 from exiting the lock body 100 in the unlocked state. When the deadbolt driver 320 is rotated by an external force (typically turning the lock cylinder 340), the guide post 321 just disengages from the undercut 334 at an arc angle and slides in the guide slot 333, thereby moving the deadbolt 410 in a direction closer to the keeper 80.

Referring to fig. 7, the handle 200 is lifted by an external force to drive the handle toggle member 310 to rotate counterclockwise along the direction of the arrow shown in fig. 7, and since the handle toggle member 310 is in a contact state with the deadbolt toggle member 320 in the unlocking state, the handle toggle member 310 rotates to drive the deadbolt toggle member 320 to rotate clockwise (in a direction opposite to the direction of the arrow shown in fig. 7), so that the guide post 321 slides into the positioning slot 332 (i.e., the locking position 331b) from the undercut slot 334 (i.e., the initial position 331a) along the guide slot 333 to place the door 60 in the locking state, as shown in fig. 9.

Further, in this embodiment, referring to fig. 5, 6, 7, 8, 9 and 10, the transmission mechanism 300 further includes a handle return spring 600, and two ends of the handle return spring 600 are respectively connected to the lock body 100 and the handle toggle member 310. So, in order to lock door leaf 60 the back at last handle 200, loosen handle 200, can rely on handle return spring 600's torsion effect to make handle 200 and handle toggle piece 310 reply initial condition (start position), initial condition is that handle return spring 600 is in the state that does not take place the distortion promptly. At this time, as shown in fig. 9, the second protruding end 313 of the handle driver 310 abuts against the stopper post 110, and at this time, the handle is pushed down to prevent the handle 200 from being rotated and unlock the door 60, so as to prevent the door 60 from being opened at will by pushing down the handle 200, which affects the safety of use, and prevent the handle 200 from drooping due to pushing down the handle 200 for a long time.

In some embodiments, referring to fig. 5, the lock 10 further includes a first elastic member 500, and two ends of the first elastic member 500 are respectively connected to the lock body 100 and the deadbolt moving member 320. In this embodiment, when the handle 200 is lifted, the guiding pin 321 can slide into the guiding groove 333 from the undercut 334 (i.e. the initial position 331a) to twist the first resilient member 500, see fig. 8, while the dead tongue 410 is inserted into the keeper 80 but not locked, and the first resilient member 500 can slide the guiding pin 321 into the positioning groove 332 (i.e. the locking position 331b) from the guiding groove 333 by the torsion force, while the dead tongue 410 is locked with the keeper 80, see fig. 9. That is, the guide post 321 can slide into the guide groove 333 from the undercut groove 334 by an external force, and after the external force is removed, the first elastic member 500 can slide the guide post 321 into the positioning groove 332 from the guide groove 333 by a torsion force, thereby locking the lock.

In some embodiments, referring to fig. 4, the deadbolt toggle member 320 has three protruding ends, and the other end of the deadbolt toggle member away from the guide post 321 is protruded with a connecting portion 324.

For example, referring to fig. 3, fig. 6, fig. 7, and fig. 8, the first elastic member 500 is a three-coil spring, and specifically, the first elastic member 500 includes a first torsion portion 510, a second torsion portion 520, and a third torsion portion 530 connected to each other, the second torsion portion 520 is located between the first torsion portion 510 and the first torsion portion 510, the first torsion portion 510 and the second torsion portion 520 are fixedly connected to the lock body 100, and the third torsion portion 530 is fixedly connected to the connecting portion 324 of the deadbolt toggle member 320.

In the present embodiment, referring to fig. 5, when the first resilient member 500 rotates the tongue-in-spring toggle 320 with an external force (generally, turning the lock cylinder 340), the guiding post 321 is just separated from the reverse hook 334 by an arc angle, and the spring force of the first resilient member 500 drives the tongue-in-spring toggle 320 to separate from the reverse hook 334 and slide into the guiding slot 333, so as to drive the tongue-in-spring 410 to move toward the direction close to the keeper 80.

In other embodiments, the handle 200 may be lifted directly by an external force without providing the first elastic member 500, so that the guide post 321 slides into the positioning groove 332 from the undercut groove 334 along the guide groove 333, thereby achieving the locking.

After the door 60 is locked from the door by lifting the handle 200, the lock core 340 can be rotated, the lock core 340 can abut against the deadbolt toggle piece 320, so as to drive the deadbolt toggle piece 320 to rotate, so that the guide post 321 slides from the locking position 331b to the initial position 331a, and the deadbolt lock fixing plate 330 is driven to drive the deadbolt 410 to slide and reset into the accommodating cavity 101, so that the door 60 is switched from the locking state to the unlocking state.

In some embodiments, the lock cylinder 340 is provided with a lock hole 340a, and the lock cylinder 340 can be rotated by inserting a mechanical key into the lock hole 340 a. The lock core 340 includes a second body 341 and a third protrusion 342 extending along the radial direction of the second body 341, and a hook 323 is disposed at an end of the deadbolt toggle 320 away from the guide post 321. In this embodiment, by rotating the lock core 340, the third extending portion 342 can engage with the hook 323 and drive the deadbolt toggle 320 to rotate, which is convenient to operate.

Referring to fig. 3, the deadbolt mechanism 400 further includes a compensating element 420, and the compensating element 420 is sandwiched between the deadbolt 410 and the keeper 80 to improve the sealing performance of the deadbolt 410 and the keeper 80 and prevent the deadbolt 410 from shaking in the keeper 80 to generate noise. In some embodiments, the lock body further has a clearance compensation function, so that the door leaf is prevented from shaking after being locked.

Specifically, in one embodiment, the compensation assembly 420 includes a compensation bar 421, a support rod 422 and a second elastic member 423, the compensation bar 421 is protruded on a side surface of the deadbolt 410, a first end of the support rod 422 is fixedly connected to the compensation bar 421, a second end of the support rod 422 is movably connected to the lock body 100 and is fixedly connected to the deadbolt lock fixing plate 330, and the second elastic member 423 is sleeved on the support rod 422 and abuts between an end surface of the deadbolt 410 and the lock body 100. When the tongue 410 slides beyond the cavity 101, the compensating bar 421 will also extend out of the cavity 101 under the action of the second resilient member 423 and be clamped between the tongue 410 and the keeper 80.

In some embodiments, referring to fig. 3, a positioning block 120 is disposed in the lock body 100, a slot 121 is disposed on the positioning block 120, and the second end of the strut 422 is inserted into the slot 121, so that the second end of the strut 422 can slide relative to the slot 121.

In some embodiments, a mounting groove 411 is formed on a side surface of the dead bolt 410, the compensating bar 421 is connected to the supporting rod 422 and is clamped in the mounting groove 411, and when the dead bolt 410 slides beyond the cavity 101, the compensating bar 421 synchronously protrudes out of the cavity 101 along with the dead bolt 410 under the action of the second elastic member 423.

Further, referring to fig. 3, the latch mechanism 400 further includes a latch assembly 430, and the latch assembly 430 is movably disposed through the upper end surface and the lower end surface of the dead bolt 410.

Specifically, in an embodiment, the latch assembly 430 includes a dead latch 410 having an inner cavity 412, two latches 431 and a third elastic member 432 disposed in the latches 431, referring to fig. 2, the two latches 431 are rotatably connected to the inner cavity 412 of the dead latch 410, the two third elastic members 432 respectively abut between the two latches 431, when the third elastic member 432 is in a natural state, the two latches 431 respectively penetrate and are exposed at an upper end surface and a lower end surface of the dead latch 410, and when the third elastic member 432 is in a compressed state, the two latches 431 are accommodated in the inner cavity 412 by a turning control force of a spring of the third elastic member 432.

The latch 431 has a first stopper 431a and a second stopper 431b, and in the unlocked state, referring to fig. 5, the second stopper 431b protrudes from the upper end surface and the lower end surface of the latch 410, and the first stopper 431a is hidden in the inner cavity 412 of the latch 410. In the fully locked state, referring to fig. 9, the second blocking portion 431b protrudes from both the upper end surface and the lower end surface of the tongue 410. In this embodiment, the third elastic member 432 is a spring, and the rotation of the latch 431 by the spring force controls the expansion and contraction of the second blocking portion 431 b. In this embodiment, the second blocking portion 431b can be extended and contracted only by the spring, and thus, it is not necessary to provide additional members, which reduces the cost.

Referring to fig. 7, when the handle 200 is lifted, the lever handle moving piece 310 rotates counterclockwise, and the dead bolt moving piece 320 rotates on the central shaft 20. At this time, the guiding post 321 of the dead-tongue toggle member 320 is rotated out of the reverse hook groove 334 and is driven on the guiding groove 333, so that the dead-tongue toggle member 320 moves forward under the guidance of the central shaft 20 and drives the whole dead tongue 410 to be slowly and outwardly driven.

Referring to fig. 8, the handle moving member 310 rotates to the position-limiting column 110, and stops the rotation, and the second stopping portion 431b of the latch 431 contacts the lock body 100, and the direction of the force is changed under the action of the internal spring force, so that the latch 431 can be driven out of the dead latch, and the dead latch 410 is not driven out completely.

Referring to fig. 9, under the force of the three-coil spring, the deadbolt toggle 320 continues to rotate until its guide post 321 slides into the positioning slot 332 of the deadbolt lock retainer plate 330, at which point the deadbolt 410 is fully activated, i.e., fully locked.

It can be understood that, as shown in fig. 1, the keeper 80 is provided with a latch slot 81, when the door 60 is in the unlocked state, the dead bolt 410 is located in the cavity 101 of the lock body 100, and the lock body 100 abuts against the latch 431 so that the latch 431 is received in the cavity 412 of the dead bolt 410; when the door leaf 60 is switched to the locking state, the dead bolt 410 drives the hook tongue 431 to slide out of the accommodating cavity 101 but not to be inserted into the lock tongue groove 81, the hook tongue 431 penetrates and is exposed out of the end surface of the dead bolt 410, when the dead bolt 410 drives the hook tongue 431 to slide into the lock tongue groove 81, the hook tongue 431 slides through the groove wall of the lock tongue groove 81 and is exposed out of the end surface of the hook tongue 431, and at the moment, the hook tongue 431 protrudes out of the inner cavity 412 and is clamped on the groove wall of the lock tongue groove 81, so that the lock picking action can be prevented.

Referring to fig. 1, in an embodiment of the glass door, the glass door includes a door 60, a door frame 70, a keeper 80 and the lock 10, the door 60 is rotatably connected to the door frame 70, a lock body 100 of the lock 10 is fixed to the door 60, the keeper 80 is mounted to the door frame 70, and a latch mechanism 400 is movably inserted into a latch groove 81, so as to lock or unlock the door 60 and the door frame 70.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims (10)

1. A lock capable of preventing a dead bolt from falling out is matched with a lock catch box on a doorframe, and is characterized by comprising:

the lock comprises a lock body, a handle, a lock core, a transmission mechanism and a bolt mechanism, wherein the handle and the lock core are rotationally connected with the lock body;

the transmission mechanism includes: the lock comprises a handle shifting piece, a deadbolt lock fixing plate and a guide post, wherein the handle shifting piece is arranged in a reciprocating rotating mode and fixedly connected with the handle, the deadbolt shifting piece is arranged in a reciprocating rotating mode and adjacent to the handle shifting piece, the deadbolt lock fixing plate is connected with the deadbolt lock shifting piece in a reciprocating movable mode and fixedly connected with a lock tongue mechanism, the deadbolt lock shifting piece is in sliding fit with the deadbolt lock fixing plate, the deadbolt lock fixing plate is provided with a sliding chute, the sliding chute comprises an initial position and a locking position which are approximately vertical to the sliding chute, and the guide post is switched between the initial position and the locking position in a reciprocating sliding;

when the door leaf is in a locking state, the lock cylinder is rotated to drive the deadbolt toggle piece to rotate, so that the guide column slides into the initial position from the locking position, and the deadbolt fixing plate is driven to drive the deadbolt mechanism to move in a direction away from the lock catch box, so that the deadbolt mechanism returns from the lock catch box into the lock body, and unlocking is completed;

when the door leaf is in an unlocking state, the handle is lifted up to drive the handle shifting piece to rotate and drive the deadbolt shifting piece to rotate, so that the guide column slides into the locking position from the initial position, and the deadbolt fixing plate is driven to drive the spring bolt mechanism to move towards the direction close to the lock catch box, so that the spring bolt mechanism is in plug-in fit with the lock catch box, and locking is completed.

2. The lock according to claim 1, wherein a protrusion is protruded from an end of the deadbolt pulling member away from the guide post, the lever handle pulling member comprises a first body and a first protrusion extending radially from the first body, the first body is connected to the lever handle, and rotating the lever handle rotates the first protrusion, so that the first protrusion abuts against the protrusion and rotates the deadbolt pulling member.

3. The lock according to claim 2, wherein the handle shifting element further comprises a second protruding portion and a third protruding portion spaced apart from the second protruding portion, the second protruding portion and the third protruding portion extend in the radial direction of the first body and are spaced apart from the first protruding portion, a limiting post is disposed on the lock body, and the second protruding portion abuts against the limiting post to keep the handle in a horizontal state;

when the handle is lifted, the second extending part is far away from the limiting column abutted to the second extending part, the third extending part is close to the limiting column and can abut against the limiting column to limit the handle shifting part to continue rotating, and at the moment, the handle is converted into a locking state from a horizontal balance state.

4. The lock of claim 1, further comprising a first resilient member including a first torsion portion, a second torsion portion and a third torsion portion connected to each other, the second torsion portion being located between the first torsion portion and the first torsion portion, the first and second torsion portions being connected to the lock body, and the third torsion portion being fixedly connected to the deadbolt toggle member.

5. The lock according to claim 1, wherein the sliding groove includes a slot, a guiding groove and a reverse hook groove, the slot, the guiding groove and the reverse hook groove are sequentially connected, the guiding groove is disposed obliquely with respect to a horizontal line, the slot forms an included angle with the guiding groove and is located at the locking position, and the reverse hook groove is substantially perpendicular to the guiding groove and is located at the initial position.

6. The lock according to claim 1, characterized in that when a key is inserted into said cylinder and said cylinder is rotated, said cylinder can engage with said deadbolt pick, causing said deadbolt pick to rotate, sliding said guide cylinder from said locking position into said initial position, and driving said deadbolt holding plate to slide said deadbolt away from said keeper, so as to unlock said deadbolt from said keeper.

7. The lock according to claim 6, wherein said lock cylinder comprises a second body and a third protrusion extending radially along said second body, and an end of said deadbolt picking member remote from said guide post is provided with a hook portion for engaging with said third protrusion.

8. The lock of claim 1, wherein the deadbolt mechanism includes a coupler tongue assembly, the coupler tongue assembly including: the elastic hook comprises a stiff tongue with an inner cavity, two hook tongues rotationally connected to two sides of the stiff tongue inner cavity and a third elastic piece arranged in the hook tongues, wherein the third elastic piece is abutted between the two hook tongues, when the third elastic piece is in a natural state, the two hook tongues respectively penetrate through and are exposed out of two end surfaces of the stiff tongue, and when the third elastic piece is in a compressed state, the two hook tongues can be accommodated in the inner cavity.

9. The lock of claim 1, wherein the deadbolt mechanism further comprises a compensation assembly, the compensation assembly comprising a compensation bar, a support bar and a second elastic member, the compensation bar being connected to a side surface of the deadbolt and movably disposed in the lock body, a first end of the support bar being fixedly connected to the compensation bar, a second end of the support bar being movably connected to the lock body, the second elastic member being sleeved on the support bar and abutting between an end surface of the deadbolt and the lock body.

10. A glass door, comprising:

a door frame;

the door leaf is rotatably connected to the door frame;

the lock according to any one of claims 1 to 9, wherein said lock body is secured to said door leaf; and

the lock catch box is arranged on the door frame and is provided with a lock tongue groove, and the lock tongue mechanism is movably inserted in the lock tongue groove so as to lock or unlock the door leaf and the door frame.

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