CN201507172U - Flexible and lightweight magnetic card smart lock - Google Patents

Abstract

A flexible and portable magnetic card intelligent lock comprises a large square tongue telescopic mechanism, a back locking mechanism, a key door opening mechanism and a magnetic card door opening mechanism. When the mechanical key is used for opening the door, the mechanical key shifting block pushes the second mechanical key shifting fork by shifting the first mechanical key shifting fork, so that the combined lock tongue and the counter lock plate for clamping the combined lock tongue are shifted. Meanwhile, the large square tongue telescoping mechanism is driven to act, so that the large square tongue is retracted into the lock cylinder to complete the door opening action. When the magnetic card is used for opening the door, the clutch is connected with the four-corner rotating sleeve, the clutch and the clutch shifting fork form a cam mechanism, the four-corner rotating sleeve is connected with the outer panel door handle, when the handle is rotated, the clutch rotates, the clutch shifting fork is enabled to shift the combined lock tongue and the second mechanical key shifting fork, the second mechanical key shifting fork is enabled to shift the large square tongue telescoping mechanism, the large square tongue is enabled to be retracted into the lock core, and the door opening action is completed. The utility model has the advantages of small volume, simple structure, good operation hand feeling, etc.

Description

Flexible and lightweight magnetic card smart lock

technical field

The utility model relates to a magnetic card intelligent lock, in particular to an intelligent lock with a large square tongue that can be conveniently stretched and retracted, has a light door opening feel, and can be opened with a magnetic card and a mechanical key, and belongs to the technical field of locks.

Background technique

The magnetic card smart lock is more and more widely used in hotels, guesthouses and even families because of its convenient and fast way of opening and locking the door, and its safe and effective anti-theft technology. However, the smart locks that are currently popular on the market are either complex in structure, or feel heavy when opening the door, and some of them have hidden safety hazards. In addition, the currently known direct spring hotel smart lock cylinders all use a gusset to control the large square tongue. With this structure, when the door is not closed in place or accidentally touches the gusset when the wind blows, the large square tongue will bounce, resulting in a second lock. When the door is closed for the first time, it will damage the door frame or the large square tongue, and each time the large square tongue needs to be moved once, it is easy to accelerate the wear and tear of parts. And when the existing intelligent lock core needs to be locked back, it needs to be realized with a mechanical key, which is very inconvenient.

Utility model content

The utility model aims to provide a simple structure, safe and convenient magnetic card intelligent lock for the above-mentioned shortcomings of the existing magnetic card intelligent lock, which has the advantages of simple structure, easy door opening, high stability and the like.

In order to achieve the above-mentioned purpose of the invention, the utility model adopts the following technical solutions to achieve.

Flexible and lightweight magnetic card smart lock, including a large square tongue telescopic mechanism, an anti-lock mechanism, a key door opening mechanism and a magnetic card door opening mechanism. The large square tongue telescopic mechanism includes a large plate fork, a large square tongue and a large plate two-way spring; the anti-lock mechanism includes an anti-lock bolt and an anti-lock plate and oblique tongue spring; the key door opening mechanism includes a mechanical key shift block, the first mechanical key shift fork, the second mechanical key shift fork, a large plate shift fork and a combined deadbolt; the magnetic card door opening mechanism includes a motor push plate mechanism, clutch, clutch dial Fork, four-corner sleeve, micro switch and combination lock tongue; the fork of the big board has a rotating shaft, when the mechanical key shift block is turned clockwise or counterclockwise, it can just move the two heads on the fork of the big board respectively , so that the large plate shifting fork rotates around its rotating shaft, and then drives the large square tongue to retract or stretch out the lock cylinder.

The motor push plate mechanism converts the rotation of the motor shaft into the telescopic movement of the motor push plate, and the pin on the clutch next to it can be pushed into the clutch, and the clutch and the four-corner rotary sleeve inside are in the engaged state, and the four-corner rotary sleeve can be rotated. Drive the clutch to rotate together.

The micro switch is set next to the combination lock tongue. When the combination lock tongue is in the extended state, the micro switch remains off. When the combination lock tongue retracts into the lock cylinder, the micro switch is touched to start the motor, and the motor pushes the plate retracted, the latch is withdrawn from the four-corner sleeve, and the engaged state of the clutch and the four-corner sleeve is released.

The first mechanical key shift fork, the second mechanical key shift fork and the large plate shift fork are arranged around the mechanical key shifter. There is a rotating shaft in the middle of the first mechanical key shifter. The mechanical key shifter pushes the first mechanical key shifter to rotate. , the first mechanical key shifting fork pushes the second mechanical key shifting fork to rotate around the rotating shaft at its tail, and the head of the second mechanical key shifting fork drives the anti-lock plate and the combined deadbolt to move, respectively realizing the unlocking of the anti-locking mechanism and the opening of the combined deadbolt action. The first mechanical key shifting fork is sickle-shaped, with a protruding post protruding downward from the large square tongue, which just fits into the inner arc surface of the first mechanical key shifting fork, and when the large square tongue protrudes out of the lock cylinder, it can be pulled through the protruding post The first mechanical key shifting fork makes it be in the limit position after turning clockwise.

The clutch includes a base body with an inner hole and the four-corner rotary sleeve placed in the inner hole, the four-corner sleeve can rotate freely and flexibly relative to the base body; the pin is arranged on the head of the base body, and is pushed out by a spring to It keeps protruding outward. When the motor push plate is stretched out, the pin can be pushed into the clutch and snapped into the corresponding vacancy on the four-corner sleeve, so that the clutch and the four-corner sleeve form a linked combination state. . The clutch uses the central column coaxially arranged with the four-corner sleeve on it as a rotating shaft, and forms a cam mechanism with the clutch fork. When the clutch rotates clockwise or counterclockwise, the clutch fork can be rotated around the rotating shaft at its tail Swivel to disengage the combination deadbolt and second mechanical key fork.

The rear part of the base body includes a cam part, and the middle part of the cam part is concave in a double-arc structure. When the clutch is rotated clockwise or counterclockwise, the cam part moves the gear lever vertically arranged in the middle of the clutch fork, and then drives the head of the clutch fork to move the combined deadbolt and the second mechanical key shifting fork to realize combined deadbolt respectively. When the door is opened and the telescopic mechanism of the large square tongue moves, the large square tongue retracts into the lock cylinder. Thereby the large square tongue telescopic mechanism is moved, and the large square tongue retracts in the lock cylinder to complete the door opening action.

The anti-lock plate is sleeved on a column close to the combined deadbolt and uses it as a rotating shaft. The tail part is placed against the head of the second mechanical key shift fork, and the head is free and a slip is provided near the end. The anti-lock bolt is provided with a sliding surface that slides relative to the sliding block. When the anti-lock bolt is retracted into the lock cylinder, the anti-lock plate moves to the combination bolt under the action of the anti-lock plate spring, and the combination lock is blocked. The tongue prevents it from retracting into the lock core. When the anti-lock oblique tongue stretches out from the lock core, the sliding surface pushes the sliding block away, driving the anti-lock plate to move away from the combination dead bolt.

Compared with the prior art, the utility model has the advantages of:

1. Flexible and compact clutch structure. The clutch of the utility model adopts an integral structure, which is mainly divided into two parts, the base body and the four-corner rotary sleeve, and the four-corner rotary sleeve can rotate freely after being inserted into the inner hole of the base body; when the pin on the base body is pushed into the clutch by the motor push plate , the clutch and the four-corner rotary sleeve can be engaged to form a linkage mechanism. In addition, the cam portion of the base body and the clutch fork form a cam swing mechanism, which not only has a simple and compact structure, but also has high reliability, small opening range and light hand feeling.

2. Stable and sensitive anti-lock mechanism. The anti-lock plate is set in a sugar-gripping structure, one end (tail) is pressed against the head of the second mechanical key shift fork, and the other end (head) is adjacent to the combined deadbolt. The lock cylinder is stretched out under the action of the slanted sliding surface, and the sliding block is pushed away by the inclined sliding surface, so that the anti-lock plate moves away from the combined deadbolt, and the locking of the combined deadbolt is released, and the combined deadbolt can be retracted into the lock Inside the core; when the door is locked, the anti-lock bolt retracts into the lock core, the sliding surface leaves the sliding block, and the anti-lock plate tilts to the other side under the action of the spring restoring force, that is, the head of the anti-lock plate is against the combination lock Tongue, the combination lock tongue is provided with an embedded structure correspondingly here, so that the combination lock tongue is locked and cannot be retracted into the lock cylinder. Such ingenious structural design makes the anti-lock mechanism more stable and reliable, and the movement range of each linkage and matching part is small, making the anti-lock mechanism very sensitive.

3. Simple and convenient large square tongue telescopic mechanism. The telescoping mechanism of the large square tongue only includes a few parts, such as the large square tongue, the large plate shift fork, the first mechanical key shift fork and the second mechanical key shift fork, the parts are simple, and the structure is simple and light. Whether it is opening the door with a mechanical key or a magnetic card, it can be easily realized through the corresponding actuator.

Description of drawings

Fig. 1 is the state diagram of each parts position when the utility model locks the door;

Fig. 2 is the state diagram of the position of each machine part when the utility model opens the door;

Fig. 3 is a schematic diagram of the action of the large square tongue telescopic mechanism of the present invention;

Fig. 4 is a schematic diagram of the action of the large square tongue telescopic mechanism of the present invention;

Fig. 5 is a structural schematic diagram of the magnetic card door opening mechanism of the present invention;

Figure 6 is a schematic diagram of the action of the anti-lock mechanism of the utility model;

Fig. 7 is the action schematic diagram II of the anti-lock mechanism of the utility model;

Fig. 8 is a structural schematic diagram of the utility model clutch;

Fig. 9 is a schematic diagram of the structure of the large plate shifting fork of the utility model;

Fig. 10 is a schematic diagram of the structure of the second sharp plate shifting fork of the present invention;

Fig. 11 is a top view of the utility model.

Reference signs:

1. Cover plate; 2. Bottom plate; 3. Decorative plate; 4. Fixed plate; 5. Large square tongue; 6. Large plate shift fork; 7. Anti-lock bolt; 8. Anti-lock plate; Micro switch; 11. Motor push plate; 12. Auxiliary lock tongue; 13. Four-corner sleeve; 14. Clutch; 15. Clutch fork; 16. Mechanical key shift block; Two mechanical key shift forks; 19, first mechanical key shift forks; 20, latches; 21, anti-lock plate shift springs; 22, oblique tongue springs; 23, card slots; Sliding surface; 27, boss; 28, base body; 29, cam portion; 30, push rod; 31, 32, shifting head.

Detailed ways

The structural features of the utility model and its preferred technical solutions will be described in detail below in conjunction with the accompanying drawings and a specific embodiment.

As shown in Fig. 1 and Fig. 2, the utility model includes a lock core, a dead bolt and a shell composed of a cover plate 1, a bottom plate 2, a fixed plate 3 and a decorative plate 4, which mainly consists of a large square tongue telescopic mechanism, an anti-lock mechanism, a key It consists of a door opening mechanism and a magnetic card door opening mechanism. The large square tongue telescopic mechanism comprises a large plate shift fork 6, a large square tongue 5 and a large plate two-way spring 17; the anti-lock mechanism comprises an anti-lock bolt 7, an anti-lock plate 6 and a bolt spring 22; the key door opening mechanism comprises a mechanical key shift block 16, a first Mechanical key shift fork 19, second mechanical key shift fork 18, large plate shift fork 6 and combined deadbolt 9; magnetic card door opening mechanism includes motor push plate mechanism, clutch 14, clutch shift fork 15, four-corner sleeve 13, micro switch 10 and combination dead bolt 9. The large plate shifting fork 6 has a rotating shaft, and when the mechanical key shift block 16 rotates clockwise or counterclockwise, the two shift heads 32 and 31 on the large profit plate shifting fork 6 can be moved respectively, so that the large profit plate shifting fork 6 turns around Its rotating shaft rotates, and then drives large square tongue 5 to retract or stretch out lock cylinder.

The motor push plate mechanism converts the rotation of the motor shaft into the telescopic movement of the motor push plate 11, and can push the latch 20 on the clutch 14 adjacent to it into the clutch 14, and the clutch 14 and the four-corner rotary sleeve 13 inside are in an engaged state. Rotating the four-corner rotary sleeve 13 can drive the clutch 14 to rotate together.

The micro switch 10 is arranged beside the combined deadbolt 9. When the combined dead bolt 9 is in the extended state, the micro switch 10 remains in the off state. When the combined dead bolt 9 is retracted into the lock cylinder, the micro switch 10 is touched. Start the motor, the motor push plate 11 retracts, the latch 20 withdraws from the four-corner sleeve 13, and the engaged state of the clutch 14 and the four-corner sleeve 13 is released.

The first mechanical key shifting fork 19, the second mechanical key shifting fork 18 and the large plate shifting fork 6 are arranged around the mechanical key shifting block 16. There is a rotating shaft in the middle part of the first mechanical key shifting fork 19, and the mechanical key shifting block 16 pushes the second mechanical key shifting fork. A mechanical key shifting fork 19 rotates, and the first mechanical key shifting fork 19 pushes the second mechanical key shifting fork 18 to rotate around the rotating shaft at its tail, and the head of the second mechanical key shifting fork 18 promptly drives the anti-lock plate 8 and the combined deadbolt 9 action, realize the unlocking of the anti-lock mechanism and the action of opening the door with the combined deadbolt 9 respectively. The first mechanical key shifting fork 19 is sickle-shaped, and the large square tongue 5 protrudes downward with a protruding post 27, which just snaps into the inner arc surface of the first mechanical key shifting fork 19, and when the large square tongue 5 stretches out from the lock cylinder, it can The first mechanical key shift fork 19 is pulled by the protruding post 27 so that it is at the limit position after clockwise rotation.

As shown in Fig. 1, 2, 5 or 8, the clutch 14 of the present invention includes a base 28 with an inner hole and the four-corner rotary sleeve 13 placed in the inner hole, the four-corner rotary sleeve 13 can be free and flexible relative to the base 28 The bolt 20 is arranged on the head of the base body 28, and is pushed out by a spring so that it keeps extending outward. When the motor push plate 11 stretches out, the bolt 20 can just be pushed in. The clutch 14 is snapped into the corresponding vacancy on the four-corner swivel 13, so that the clutch 14 and the four-corner swivel 13 form a linked combination state.

The clutch 14 adopts an integral structure, which is mainly divided into two parts: a base body 28 and a four-corner rotary sleeve 13 . When the latch 20 on the base body 28 is pushed into the clutch 14 by the motor push plate 11, the clutch 14 and the four-corner rotary sleeve 13 can be engaged to form a linkage mechanism. In addition, the cam portion 29 of the base body 28 and the clutch shift fork 15 form a cam swing mechanism, which not only has a simple and compact structure, but also has high reliability, small opening range, and light hand feeling. Clutch 14 is rotating shaft with the center column that is coaxially arranged with described four-corner rotating sleeve 13 on it, and forms cam mechanism with clutch shift fork 15, when clutch 14 rotates clockwise or anticlockwise, clutch shift fork 15 can be made to rotate The rotating shaft that is positioned at its afterbody swings, and it pokes combination dead bolt 9 and second mechanical key shift fork 18 (seeing as shown in Figure 5).

As shown in FIG. 8 , the middle part of the cam portion 29 at the tail of the base body 28 is concave and has a double-arc structure. When the clutch 14 is turned clockwise or counterclockwise, the cam portion 29 moves the vertically arranged push rod 30 in the middle of the clutch shift fork 15, and then drives the head of the clutch shift fork 15 to move the combined deadbolt 9 and the second mechanical key shift fork. 18. Respectively realize the combination dead bolt 9 to open the door and the action of the large square tongue telescopic mechanism, and the large square tongue 5 is retracted in the lock cylinder. Thereby the large square tongue telescopic mechanism is moved, and the door opening action is completed. In order to reduce the friction between the push rod 30 and the cam portion 29 , a roller is generally disposed outside the push rod 30 .

As shown in Figures 6 and 7 for details, the anti-lock plate 8 is sleeved on a column close to the combined deadbolt 9 and uses it as a rotating shaft, and the tail is placed on the head of the second mechanical key shift fork 18, and its head A sliding block 25 is free and near the end, and the anti-lock bolt 7 is provided with a sliding surface 26 that slides relative to the sliding block 25. Under the action of the plate shifting spring 21, it moves toward the combination dead bolt 9, and blocks the combination dead bolt 9 so that it cannot be retracted into the lock cylinder. When the anti-lock bolt 7 stretches out of the lock cylinder, the sliding surface 26 will slide Block 25 pushes away, and drives anti-lock plate 8 to move away from combination dead bolt 9 directions.

The anti-lock plate 8 is arranged as a sugar-greedy structure, and one end (tail) is pressed against the head of the second mechanical key shift fork 18, and the other end (head) is next to the combination dead bolt 9. When the door is opened, the anti-lock bolt 7 Stretch out the lock cylinder under the action of the oblique bolt spring 22, and the inclined sliding surface 26 pushes away the sliding block 25, so that the anti-lock plate 8 moves away from the combination dead bolt 9, and the lock on the combination dead bolt 9 is released. Locked, the combined dead bolt 9 can be retracted in the lock core; when the door is locked, the anti-lock oblique bolt 7 is retracted in the lock core, the sliding surface 26 leaves the sliding block 25, and the anti-lock plate 8 moves to the other side under the spring restoring force. One side is tilted, that is, the head of the anti-lock plate 8 is against the combined deadbolt 9, and the combined deadbolt 9 is provided with an incarcerated structure correspondingly here, so that the combined deadbolt 9 is locked and cannot be retracted into the lock cylinder. Such ingenious structural design makes the anti-lock mechanism more stable and reliable, and the movement range of each linkage and matching part is small, making the anti-lock mechanism very sensitive.

When the mechanical key opens the door, turn the mechanical key shifting block 16 clockwise, the mechanical key shifting block 16 pushes the first mechanical key shifting fork 19 to rotate, and the first mechanical key shifting fork 19 pushes the second mechanical key shifting fork 18 around the shaft at its tail Turn, the head of the second mechanical key shift fork 18 drives the anti-lock plate 8 and the combined deadbolt 9 to move, and the anti-lock plate 8 is pulled away from the combined deadbolt 9, and the combined deadbolt 9 is dialed into the lock cylinder at the same time; continue to turn the mechanical key , the mechanical key shift block 16 moves the toggle head 32 of the large plate shift fork 6 to make the large plate shift fork 6 rotate around it, and then the large square tongue 5 is dialed into the lock cylinder to complete the unlocking action of the large square tongue mechanism.

When the magnetic card opens the door, the magnetic card door opening mechanism converts the signal induced from the magnetic card into an electrical signal, and starts the motor. Push the pin 20 of the clutch 14 into the clutch 14, and the clutch 14 and the inner four-corner sleeve 13 are engaged. turn. Clutch 14 and clutch shift fork 15 form cam mechanism, promote clutch shift fork 15, because clutch shift fork 15 can rotate around the rotating shaft of afterbody, thus the head of clutch shift fork 15 just can stir combination dead bolt 9, it is dialed in. Inside the lock cylinder. Simultaneously, the second mechanical key shifting fork 18 is also stuck in this position, so the clutch shifting fork 15 is stirring the second mechanical key shifting fork 18 at the same time, and the second mechanical key shifting fork 18 also rotates around the rotating shaft of the tail, wherein The card slot 23 provided between pulls the corresponding block 24 on the large plate shifting fork 6 when swinging, so that the large plate shifting fork 6 rotates around its axis of rotation. , When the large plate shift fork 6 rotates counterclockwise, the large square tongue 5 can be dialed into the lock cylinder to realize the door opening action of the large square tongue telescopic mechanism. When toggled in place, the two-way spring 17 of the big profit plate can be used for the location of the stop.

The utility model is also provided with a large square tongue telescopic mechanism anti-lifting anti-locking function structure on the outer door handle panel, and the door handle and the structure adopt gear transmission, which is simple and reliable. It can realize the anti-locking of the generous tongue mechanism easily and quickly.

The above description is only a preferred solution of many embodiments of the utility model, and it is not intended to be any limitation or exhaustive. It should be understood that, under the essence of the invention of the utility model, all equivalent changes made to it Or modification, should be considered within the scope of its protection.

Claims (5)

1. flexible light magnetic card intelligence lock comprises generous tongue telescoping mechanism, locks mechanism, key door-opening mechanism and magnetic card door-opening mechanism that generous tongue telescoping mechanism comprises big sharp plate shift fork, generous tongue and big sharp plate bidirectional spring; Locking mechanism comprises anti-inclined tongue of lock, locks plate and oblique tongue spring; The key door-opening mechanism comprises mechanical key shifting block, the first mechanical key shift fork, the second mechanical key shift fork, big sharp plate shift fork and combination dead bolt; The magnetic card door-opening mechanism comprises motor rushing board mechanism, clutch, four jiaos of pivoted housings, clutch shifter, microswitch and combination dead bolts; Big sharp plate shift fork has a rotating shaft, when mechanical key shifting block clockwise or when rotating counterclockwise, be able to stir two shifting blocks on the big sharp plate shift fork respectively, and big sharp plate shift fork is rotated around its rotating shaft, drives generous tongue retraction then or stretches out lock core;

The motor rushing board mechanism converts the rotation of machine shaft to motor push pedal stretching motion, latch on the clutch of its setting of next-door neighbour can be pushed in the clutch, four jiaos of pivoted housings of clutch and its inside engagement state, rotate four jiaos of pivoted housings and just can drive clutch and together rotate;

Microswitch is arranged at by the combination dead bolt, when the combination dead bolt is in when stretching out state, microswitch keeps off-state, in the time of in making up dead bolt retraction lock core, touch microswitch, starter motor, motor push pedal withdrawal, described latch withdraws from from four jiaos of pivoted housings, removes the engagement state of clutch and four jiaos of pivoted housings, it is characterized in that:

The first mechanical key shift fork, the second mechanical key shift fork and big sharp plate shift fork are provided with round the mechanical key shifting block, there is a rotating shaft middle part of the first mechanical key shift fork, the mechanical key shifting block promotes the first mechanical key shift fork and rotates, the first mechanical key shift fork promotes the second mechanical key shift fork again and rotates around the rotating shaft of its afterbody, the second mechanical key shift fork head promptly drives locks plate and combination lock tonguing, realizes respectively locking the plate release and the action of opening the door;

Clutch with on it, with the central post of described four jiaos of coaxial settings of pivoted housing be rotating shaft, and form cam mechanism with clutch shifter, clutch is clockwise or when rotating counterclockwise, can make clutch shifter around the shaft swing that is positioned at its afterbody, make it push the combination dead bolt and the second mechanical key shift fork aside, simultaneously, the second mechanical key shift fork is stirred the corresponding fixture block that is provided with on the big sharp plate shift fork by system draw-in groove thereon, big sharp plate is rotated around its rotating shaft, thereby make generous tongue telescoping mechanism action, in the generous tongue retraction lock core, finish the action of opening the door.

2. flexible light magnetic card intelligence lock as claimed in claim 1, it is characterized in that: the described sleeve-board of locking is located at one near on the column of combination dead bolt and be rotating shaft with it, afterbody is placed on the head of the described second mechanical key shift fork, a slipping block is located to be provided with in the free and close end of its head, anti-inclined tongue of lock is provided with the slide surface of relative slip with this slipping block, when anti-inclined tongue of lock retraction lock core, locking plate moves to the combination dead bolt under the effect of locking the plate dialing spring, block the combination dead bolt make its can not the retraction lock core in, when anti-inclined tongue of lock stretches out lock core, its described slide surface is pushed slipping block open, drives to lock plate towards moving away from combination dead bolt direction.

3. flexible light magnetic card intelligence lock as claimed in claim 1, it is characterized in that: the first mechanical key shift fork is sickleshaped, the downward protruding projection that has of generous tongue, and snap in the intrados of the first mechanical key shift fork just, and when generous tongue stretches out lock core, can spur the first mechanical key shift fork by this projection and make it be in extreme position after clockwise rotating.

4. flexible light magnetic card intelligence lock as claimed in claim 1 is characterized in that: described clutch comprises the matrix with an endoporus and places described four jiaos of pivoted housings of this endoporus, four jiaos of pivoted housings can relative to the matrix freedom and flexibility rotate; Described latch is located at the matrix head, by a spring it is ejected and to make it keep protruding state, when described motor push pedal is stretched out, just this latch can be pushed in the clutch and snap in the omission corresponding on four jiaos of pivoted housings, make clutch and four jiaos of pivoted housings form the assembled state that link.

5. flexible light magnetic card intelligence lock as claimed in claim 4, it is characterized in that: described matrix afterbody includes a cam part, and this cam part middle part indent is two arcuate structures; When clockwise or when rotating counterclockwise clutch, cam part is stirred the vertically disposed push rod in clutch shifter middle part, then the head that drives clutch shifter is stirred the combination dead bolt and the second mechanical key shift fork, realize that respectively the combination dead bolt opens the door and the action of generous tongue telescoping mechanism, in the generous tongue retraction lock core.

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