CN214498660U - Door lock capable of controlling reverse lifting function - Google Patents

Abstract

The utility model belongs to the technical field of door locks, in particular to a door lock with a controllable reverse lifting function, which comprises a shell, wherein a latch bolt and a square bolt are arranged in the shell, a latch bolt driving piece for driving the latch bolt to move and a square bolt driving piece for driving the square bolt to move, the latch bolt driving piece can be controlled to rotate by reversing to drive the square bolt to extend out of the shell, a reverse lifting control component capable of limiting the reverse rotation of the latch bolt driving piece is arranged in the shell, the reverse lifting control component comprises a driving switch capable of moving up and down and a rotatable locking piece, the driving switch drives the locking piece to rotate by moving up and down, a lock hook is formed on the locking piece, a limiting shaft capable of being hooked by the lock hook is formed on the latch bolt driving piece, a positioning piece capable of extending outwards is arranged in the driving switch, and a spring is abutted against the positioning piece, so that the positioning piece has a tendency of extending outwards towards the driving switch, one end of the shell is provided with a positioning through hole for embedding the positioning piece. The door lock can realize stable control of the reverse lifting function.

Description

Door lock capable of controlling reverse lifting function

Technical Field

The utility model belongs to the technical field of the lock, a lock of steerable function is carried in opposite directions is related to.

Background

The door lock is used for locking a house door, can play a role in protecting the life and property safety of a user, and for achieving the purpose, the existing door lock usually has a back locking function, and the user can lock the door outdoors through rotating a key. And in order to make the back-locking function more convenient, still can increase the back-lifting function on some locks, the user only need the handle on the reversal rotation door, can realize the back-locking of door.

Since the door lock must be unlocked by a key after the door is locked, the lifting function of the door lock causes inconvenience to users in some specific cases. If the user rotates the handle reversely when going out, the user can not open the door lock under the condition that the user forgets to take the key after locking the door reversely. Or a child or a pet at home touches the handle in an unexpected situation, so that the handle is reversed to lock the door, and troubles are caused when the user opens the door.

When the situation that the door is inconvenient to open due to the reverse lifting function of the door lock occurs for many times, some users want to cancel the reverse lifting function of the door lock. However, if the back-lifting function of the door lock is to be cancelled, the user needs to remove the structure for realizing the back-lifting function in the door lock, or directly replace the whole door lock, which is difficult to be realized by a general user, often needs to be operated by professional technicians, and wastes time and money of the user. Therefore, a structure capable of freely controlling the back lift function can be added to the existing back lift door lock, so that a user can easily realize the control of the back lift function of the door lock.

If CN201420471537.1 discloses a lock body of adjustable anti-function of carrying, including casing, the panel that supplies the latch to stretch out and the installation cavity in the casing, the installation cavity in be provided with insurance spring bolt link gear, oblique spring bolt link gear and with insurance spring bolt link gear and oblique spring bolt link gear linkage's lock body drive mechanism, lock body drive mechanism include the transmission shaft, the transmission shaft in be provided with the linkage hole that inserts the square core, transmission shaft corotation constitute the linkage with oblique spring bolt link gear, during the reversal constitute the linkage with insurance spring bolt link gear, its characterized in that: and an adjusting mechanism which can be opened and closed and limits the reverse rotation of the transmission shaft is arranged in the shell. The transmission shaft is provided with a transmission disc in linkage with the safety lock tongue linkage mechanism in a linkage manner on the circumferential surface, the adjusting mechanism comprises a locking block arranged on the circumferential surface of the transmission disc in linkage with the safety lock tongue linkage mechanism, and the locking block is provided with an adjusting pin penetrating through the shell.

In the lock body, the transmission shaft is linked with the safety lock tongue linkage mechanism when the transmission disc rotates reversely, the locking block is directly arranged on the transmission disc and matched with the adjusting pin to limit the reverse rotation of the transmission disc, and the function of controlling the lock body to rotate reversely and lock is realized. However, the adjusting mechanism lacks a structure for positioning the transmission disc, and the transmission disc cannot be kept stable when the transmission shaft is limited to rotate reversely, i.e. a user cannot stably and accurately control the reverse lifting function of the lock body. If the user needs to close the reverse lifting function of the lock body, the transmission plate in the lock body is displaced during the use process due to the lack of the corresponding positioning structure, and the lock body cannot accurately close the reverse lifting function of the lock body. Therefore, if the regulation of the reverse lifting function in the lock body is disordered, the user can be given great trouble when unlocking the lock, the control of the reverse lifting function of the lock body is realized, and besides the corresponding regulating mechanism, the positioning structure of the regulating mechanism is also indispensable.

In view of the above problems, a door lock capable of accurately and stably controlling the back-lift function can be designed.

Disclosure of Invention

The utility model discloses according to above-mentioned problem, a steerable lock of function is carried to contrary is provided, and this lock is when possessing the function of carrying to contrary, can supply the user freely to control its switching of carrying to the function to can keep under the required state of user steadily.

The purpose of the utility model is realized like this:

the utility model provides a steerable lock of function of lifting conversely, includes the casing, is equipped with in the casing and can stretches out or retract the latch bolt and the square tongue of casing to and be used for driving the latch bolt driving piece of latch bolt motion with being used for driving the square tongue driving piece of square tongue motion, latch bolt driving piece accessible reversal control the square tongue driving piece rotates, and drives the square tongue stretches out the casing, be equipped with in the casing and restrict the reverse control assembly that lifts of latch bolt driving piece, reverse control assembly is including the drive switch that can reciprocate to and rotatable retaining member, drive switch drives through reciprocating the retaining member rotates, be formed with the latch hook on the retaining member, be formed with on the latch bolt driving piece and can be by the spacing axle that the latch hook hooked, be equipped with the setting element that can outwards stretch out in the drive switch, and with the spring that the setting element offseted, the spring makes the setting element have to drive switch outstretched trend, casing one end is formed with the location through-hole that supplies the setting element embedding.

Further, be equipped with the installation through-hole in the drive switch, the setting element is the sphere and locates in the installation through-hole, the installation through-hole includes that the diameter is different, and locates respectively the entry port at drive switch both ends with stretch out the port, the diameter of setting element is less than the diameter of entry port to be greater than stretch out the diameter of port, stretch out the port orientation the one end at positioning hole place.

Furthermore, a tooth groove is formed on the driving switch, and a tooth block meshed with the tooth groove is formed on the locking piece.

Furthermore, be formed with the square core that is used for connecting the handle on the oblique tongue driving piece, and be used for driving the first oblique tongue drive division that the oblique tongue removed, be connected with on the oblique tongue with the arm-tie that first oblique tongue drive division offsets, be equipped with in the casing support in first torsional spring between arm-tie and the shells inner wall, first torsional spring makes the oblique tongue have to the trend that stretches out outside the casing.

Furthermore, the square core is sleeved with a rotatable linkage piece, a second inclined tongue driving part which is abutted against the pulling plate is formed on the linkage piece, and a driving rod which is abutted against the square tongue is hinged to the linkage piece.

Furthermore, a guide through hole is formed in the driving rod, a push block which is linked with the square tongue driving piece is connected to the square tongue, a limiting plug-in unit which penetrates through the guide through hole and is inserted into the push block is connected to the driving rod, and the guide through hole can swing relative to the limiting plug-in unit.

Furthermore, a gap is formed between the limiting plug-in and the guide through hole.

Furthermore, a pushing part capable of pushing the square tongue driving part to rotate is formed on the oblique tongue driving part, a linkage through hole used for connecting the pushing block is formed on the square tongue driving part, and a linkage convex body stretching into the linkage through hole is formed on the pushing block.

Further, be formed with the linkage recess on the oblique tongue driving piece, be formed with spacing recess on the ejector pad, be equipped with in the casing along with the limiting plate of oblique tongue driving piece reversal rebound, be formed with on the limiting plate support in the linkage dog in the recess, and support in spacing dog in the spacing recess, be formed with on the ejector pad can with the location convex part that spacing dog offseted, be formed with the dog that resets on the limiting plate, be equipped with in the casing support in the second torsional spring between dog and the shells inner wall of the case, the second torsional spring makes the limiting plate has the trend of downward movement, be formed with on the casing and supply lock core male lock core hole, be formed with the recess of unblanking that can supply the lock core thumb wheel to stretch into on the ejector pad, be formed with the dog of unblanking that can promote by the lock core thumb wheel on the limiting plate.

Furthermore, be formed with first direction through-hole on the limiting plate, be formed with second direction through-hole on the ejector pad, be formed with in the casing and pass simultaneously the guide post of first direction through-hole and second direction through-hole, first direction through-hole can be relative the guide post reciprocates, the second direction through-hole can be relative the guide post is removed about.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

in this lock, through stirring from top to bottom drive switch control the retaining member rotates, can restrict the reversal of oblique tongue driving piece makes linkage between oblique tongue driving piece and the square tongue driving piece obtains control, has played the regulatory action to this lock anti-function of carrying promptly, the setting element still can be right drive switch's position is fixed a position for this lock has also been accomplished to this lock when realizing carrying anti-function control and has kept at steady state to the control of anti-function of carrying.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the internal structure of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the present invention.

Fig. 3 is a schematic diagram of the internal structure of the present invention.

FIG. 4 is a schematic view of the internal structure of the present invention

Fig. 5 is a schematic diagram of the internal structure of the present invention.

Fig. 6 is a schematic diagram six of the internal structure of the present invention.

Fig. 7 is a front view of one side housing.

Fig. 8 provides a schematic diagram of the structure of the control assembly.

Fig. 9 is a first sectional view of the drive switch.

Fig. 10 is a sectional view of the second drive switch.

FIG. 11 is a schematic view of the dead bolt actuator.

Fig. 12 is a perspective view of the push block.

Fig. 13 is a perspective view of the stopper plate.

0-shell, 01-positioning through hole, 02-first torsion spring, 03-second torsion spring, 04-lock core hole, 05-guide column, 1-oblique tongue, 11-pulling plate, 2-square tongue, 3-oblique tongue driving piece, 31-limiting shaft, 32-square core, 33-first oblique tongue driving piece driving, 34-pushing part, 35-linkage groove, 4-square tongue driving piece, 41-linkage through hole, 5-reverse lifting control component, 51-driving switch, 511-positioning piece, 512-spring, 513-installation through hole, 5131-inlet port, 5132-outlet port, 514-tooth groove, 52-locking piece, 521-lock hook, 522-tooth block, 6-linkage piece, 61-second oblique tongue driving piece, 62-driving rod, 621-guiding through hole, 622-limiting plug-in component, 7-pushing block, 71-linkage convex body, 72-limiting groove, 73-positioning convex body, 74-unlocking groove, 75-second guiding through hole, 8-limiting plate, 81-linkage stop, 82-limiting stop, 83-reset stop, 84-unlocking stop, 85-first guiding through hole and 9-balance sleeve.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The invention will be further described in the following with reference to specific embodiments thereof,

as shown in fig. 1-10, a door lock capable of controlling a back lifting function includes a housing 0, a latch tongue 1 and a latch tongue 2 capable of extending out of or retracting into the housing 0 are disposed in the housing 0, a latch tongue driving member 3 for driving the latch tongue 1 to move and a latch tongue driving member 4 for driving the latch tongue 2 to move are disposed in the housing 0, the latch tongue driving member 3 can control the latch tongue driving member 4 to rotate by reversing and drive the latch tongue 2 to extend out of the housing 0, a back lifting control assembly 5 for limiting the latch tongue driving member 3 to reverse is disposed in the housing 0, the back lifting control assembly 5 includes a driving switch 51 capable of moving up and down and a rotatable locking member 52, the driving switch 51 drives the locking member 52 to rotate by moving up and down, a latch hook 521 is formed on the locking tongue driving member 3, a limiting shaft 31 capable of being hooked by the latch hook 521 is formed on the latch tongue driving member 3, the driving switch 51 is provided with a positioning member 511 capable of extending outward and a spring 512 abutting against the positioning member 511, the spring 512 makes the positioning member 511 have a tendency of extending outward toward the driving switch 51, and one end of the housing 0 is formed with a positioning through hole 01 for the positioning member 511 to be embedded into. Specifically, in the door lock, the latch bolt driving part 3 is used for connecting a handle, when a user rotates the handle forward, the latch bolt driving part 3 rotates forward and drives the latch bolt 1 to retract into the shell 0; when a user rotates the handle reversely, the latch bolt driving part 3 rotates reversely, and the latch bolt 2 can be driven to extend out of the shell 0 through the latch bolt driving part 4, so that the door lock forms reverse locking. The driving switch 51 is embedded in one side of the housing 0 and exposed to one side of the surface of the housing 0, so that a user can toggle the driving switch 51. When a user needs to close the lifting function of the door lock, the driving switch 51 is toggled, so that the locking member 52 faces the locking hook 521 and can hook the limiting shaft 31 to rotate, and because the driving switch 51 is moved, the positioning member 511 in the driving switch 51 is pushed by the spring 512 to be embedded into the positioning through hole 01, so that the position of the driving switch 51 is fixed, at this time, the locking member 52 rotates to the state that the locking hook 521 hooks the limiting shaft 31 and is also fixed, the latch bolt driving member 3 cannot be reversed because the limiting shaft 31 is hooked, and the lifting function of the door lock is closed. When the user needs to reopen the lifting function of this lock, stir again drive switch 51 makes retaining member 52 towards latch hook 521 keeps away from the direction rotation of spacing axle 31 drive switch 51 removes the back once more, setting element 511 in the drive switch 51 with the cooperation of positioning hole 01 makes on the casing 0 drive switch 51 receives fixedly with the position of retaining member 52 equally, this moment spacing axle 31 is no longer in the state of being hooked, normal reversal can be realized to latch bolt driving piece 3, and the lifting function of this lock resumes. Casing 0 is for playing the guard action to this lock body, casing 0's material adopts the difficult material that takes place deformation and destroyed to make usually, like metal material, consequently positioning hole 01 shape and position on the casing 0 also can keep relatively stable, setting element 511 can adopt materials such as firm metal relatively to make equally, makes setting element 511 and positioning hole 01 often long-term cooperation back also can not take place deformation, can guarantee this lock to the stability of back lifting function control.

As shown in fig. 9 to 10, an installation through hole 513 is formed in the driving switch 51, the positioning element 511 is spherical and is disposed in the installation through hole 513, the installation through hole 513 includes an entrance port 5131 and an extension port 5132 which have different diameters and are respectively disposed at two ends of the driving switch 51, the diameter of the positioning element 511 is smaller than the diameter of the entrance port 5131 and larger than the diameter of the extension port 5132, and the extension port 5132 faces to an end where the positioning through hole 01 is located. Specifically, the positioning element 511 may be made of steel balls, the spherical positioning element 511 may be put into the installation through hole 513 in the driving switch 51 from the entrance port 5131 with a diameter larger than that of the entrance port, and then the spring 512 is put into the installation through hole 513, the driving switch 51 is pressed against the inner wall of the housing 0, the spring 512 is pressed between the positioning member 511 and the inner wall of the housing 0, the spring 512 can push the positioning member 511 to protrude from the protruding port 5132, but since the diameter of the positioning member 511 is larger than that of the protruding port 5132, the positioning member 511 does not come off from the mounting through-hole 513, the positioning member 511 can be kept in the mounting through-hole 513, and extends out from the extending port 5132 to be embedded into the positioning through hole 01 of the housing 0, thereby fixing the driving switch 51. The diameter of the inlet port 5131 and the diameter of the outlet port 5132 can be limited by arranging the mounting through hole 513 in a circular truncated cone shape or arranging a limiting step in the mounting through hole 513, so that corresponding effects can be achieved.

As shown in fig. 8, a spline 514 is formed on the driving switch 51, and a block 522 engaged with the spline 514 is formed on the locking member 52. Specifically, the driving switch 51 can drive the locking member 52 to rotate when ascending and descending through the meshing relationship between the tooth grooves 514 and the tooth blocks 522, and a positioning shaft passing through the locking member 52 is arranged in the housing 0 and used for limiting the rotation of the locking member 52.

As shown in fig. 1 to 3, a square core 32 for connecting a handle and a first latch driving portion 33 for driving the latch 1 to move are formed on the latch driving member 3, a pull plate 11 abutting against the first latch driving portion 33 is connected to the latch 1, a first torsion spring 02 abutting against between the pull plate 11 and an inner wall of the housing 0 is arranged in the housing 0, and the first torsion spring 02 makes the latch 1 have a tendency of extending out of the housing 0. Specifically, the square core 3 is used for inserting a square rod on a handle, so as to form a connection with the handle, when a user rotates the handle forward, and the latch bolt driving part 3 rotates the latch bolt driving part 3 forward, the pull plate 11 is pushed by the latch bolt driving part 3 through the first latch bolt driving part 33 to move, the pull plate 11 pulls the latch bolt 1 back into the housing 0 in the moving process, and compresses the first torsion spring 02, and after the user releases the handle, the first torsion spring 02 rebounds, so that the pull plate 11 pushes the latch bolt 1 and the latch bolt driving part 3 to reset.

As shown in fig. 4-6, the square core 32 is sleeved with a rotatable linking member 6, and the linking member 6 is formed with a second latch driving portion 61 abutting against the pulling plate 11 and hinged with a driving rod 62 abutting against the square latch 2. Specifically, the lock cylinder is installed on the door lock, when a user rotates the handle in a reverse mode, the latch bolt driving piece 3 rotates in a reverse mode, the latch bolt 2 is driven to extend out of the shell 0 through the latch bolt driving piece 4, and after the door lock is locked in a reverse mode, the user can insert a key into the lock cylinder to rotate, so that the latch bolt 2 retracts into the shell 0, and the reverse locking of the door lock is relieved. When the square tongue 2 retracts into the shell 0, the square tongue 2 pushes the driving rod 62 which is abutted against the square tongue 2 to swing, the driving rod 62 drives the linkage piece 6 which is hinged with the driving rod to rotate when swinging, the linkage piece 6 pushes the pull plate 11 to move through the second inclined tongue driving part 61 when rotating, the pull plate 11 pulls the inclined tongue 1 to retract into the shell 0 in the moving process, namely when a user releases the anti-locking of the door lock through a key, the inclined tongue 1 can be controlled to retract into the shell 0 in the process of rotating the key by the user, and the door lock is completely opened.

Furthermore, a guide through hole 621 is formed in the driving rod 62, a push block 7 linked with the tongue driving member 4 is connected to the tongue 2, a limiting plug-in 622 penetrating through the guide through hole 621 and inserted into the push block 7 is connected to the driving rod 62, and the guide through hole 621 can swing relative to the limiting plug-in 622. Specifically, through the cooperation of the guide through hole 621 and the limiting plug-in 622, the swing range of the driving rod 62 can be limited, the limiting effect on the driving rod 62 is achieved, and the stability of the linkage relationship between the latch bolt 1 and the dead bolt 2 is enhanced.

Further, a gap is formed between the limiting plug 622 and the guiding through hole 621. Specifically, in order to avoid friction between the driving rod 62 and the limiting plug-in 622 when swinging, and further prevent the driving rod 62 from swinging normally, a gap should be left between the guiding through hole 621 on the driving rod 62 and the limiting plug-in 622 passing through the guiding through hole.

As shown in fig. 11 to 12, a pushing portion 34 capable of pushing the tongue driving member 4 to rotate is formed on the tongue driving member 3, a linkage through hole 41 for connecting the pushing block 7 is formed on the tongue driving member 4, and a linkage protrusion 71 extending into the linkage through hole 41 is formed on the pushing block 7. Specifically, the pushing portion 34 contacts the tongue driving member 4 when the latch bolt driving member 3 rotates reversely, and the tongue driving member 4 is pushed by the pushing portion 34 to rotate, and the tongue driving member 4 is in a shape that is beneficial to pushing by the pushing portion 34. When the tongue driving member 4 is pushed by the pushing portion 34, the tongue driving member 4 pushes the pushing block 7 to move towards the direction outside the housing 0 through the linkage convex body 71 extending into the linkage through hole 41, and at this time, the pushing block 7 drives the tongue 2 to extend out of the housing 0. When a user inserts a key into the lock cylinder and rotates the key to enable the square tongue 2 to retract into the housing 0, the push block 7 moves towards the square core of the housing 0, and the linkage convex body 71 on the push block 7 pushes the square tongue driving piece 4 to rotate and reset in the linkage through hole 41.

As shown in fig. 2, 3 and 13, a linkage groove 35 is formed on the latch driving member 3, a limiting groove 72 is formed on the pushing block 7, a limiting plate 8 which moves upwards along with the latch driving member 3 in a reverse direction is arranged in the housing 0, a linkage stopper 81 which abuts against the linkage groove 35 and a limit stopper 82 which abuts against the limiting groove 72 are formed on the limiting plate 8, a positioning protrusion 73 which can abut against the limit stopper 82 is formed on the pushing block 7, a reset stopper 83 is formed on the limiting plate 8, a second torsion spring 03 which abuts against the reset stopper 83 and the inner wall of the housing 0 is arranged in the housing 0, the second torsion spring 03 enables the limiting plate 8 to have a tendency of moving downwards, a lock cylinder hole 04 which can be inserted by a lock cylinder is formed on the housing 0, an unlocking groove 74 which can be inserted by a lock cylinder shifting wheel is formed on the pushing block 7, an unlocking stop 84 which can be pushed by a lock core thumb wheel is formed on the limiting plate 8. Specifically, the limiting plate 8 can play a role in positioning the dead bolt 2 and assisting the reset of the dead bolt driving piece 3. When the square tongue does not extend out of the shell 0 and the limiting plate 8 is static, the limiting plate 8 abuts against the limiting groove 72 on the push block to prevent the push block 7 from driving the square tongue 2 to extend out of the shell 0. When the latch bolt driving member 3 rotates reversely and drives the limiting plate 8 to ascend by abutting against the linkage stopper 81 in the linkage groove 35, the limiting stopper 82 on the limiting plate 8 leaves from the limiting groove 72 on the pushing block 7, so that the pushing block 7 can normally drive the latch bolt 2 to extend out of the shell 0. In the ascending in-process of limiting plate 8, limiting plate 8 passes through reset stop 83 is right the second torsional spring 03 compresses, and after the user loosened the handle, oblique tongue driving piece 3 no longer right limiting plate 8 applys the power that promotes its rebound, second torsional spring 03 kick-backs, and makes through promoting reset stop 83 limiting plate 8 descends, this moment the position of ejector pad 7 has taken place to remove, limit stop 82 on the limiting plate 8 with locating protrusion 73 on the ejector pad 7 keeps away from one side of spacing recess 72 offsets, prevents ejector pad 7 drives square tongue 2 withdrawal in the casing 0. The lock cylinder hole 04 is used for installing a lock cylinder and is arranged below the push block 7 and the limiting plate 8, when a user inserts a key into the lock cylinder and rotates the key, a lock cylinder dial wheel in the lock cylinder rotates towards the direction capable of extending into the unlocking groove 74, the push block 7 is pushed to move towards the inner direction of the shell 0 after extending into the unlocking groove 74, meanwhile, the limiting plate 8 is pushed to move upwards through the unlocking stop 84, the limiting stop 82 is enabled not to abut against the positioning convex body 73, and the push block 7 can normally drive the square bolt 2 to retract into the shell 0. After the lock cylinder thumb wheel continues to rotate to leave the unlocking groove 74, the limiting plate 8 descends again and resets.

As shown in fig. 2, 3, 12 and 13, a first guide through hole 85 is formed on the limiting plate 8, a second guide through hole 75 is formed on the pushing block 7, a guide post 05 is formed in the housing 0 and penetrates through the first guide through hole 85 and the second guide through hole 75, the first guide through hole 85 can move up and down relative to the guide post 05, and the second guide through hole 75 can move left and right relative to the guide post 05. Specifically, the stroke of the push block 7 driving the square tongue 2 to extend out and retract into the housing 0 can be limited by the matching of the first guide through hole 85 and the guide column 05; through the cooperation of second direction through-hole 75 and guide post 05, can be right the stroke of limiting plate 9 in the process of reciprocating is injectd, has improved the stability of the inside linkage relation of this lock effectively.

Further, still be formed with the support cylinder on the ejector pad 7, the support cylinder with the cover has the triangle torsional spring between the guide post 05 in the removal process of ejector pad 7, the position of support cylinder changes along with it, and the triangle torsional spring takes place to rotate, makes the support cylinder with the position relation between the guide post 05 is fixed, and the triangle torsional spring has further fixed the position of ejector pad 7 after the removal promptly for the operating condition of this lock can remain stable after changing.

As shown in fig. 4-6, a balance sleeve 9 capable of abutting against the internal parts and the housing 0 is arranged in the housing 0, and the balance sleeve 9 plays a role in supporting and pressing the internal parts of the door lock, thereby further reinforcing the linkage relationship between the internal parts of the door lock.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (10)

1. The door lock with the controllable reverse lifting function comprises a shell (0), wherein an inclined tongue (1) and a square tongue (2) which can extend out or retract into the shell (0) are arranged in the shell (0), a inclined tongue driving piece (3) used for driving the inclined tongue (1) to move and a square tongue driving piece (4) used for driving the square tongue (2) to move are arranged in the shell (0), the inclined tongue driving piece (3) can control the square tongue driving piece (4) to rotate through reverse rotation and drive the square tongue (2) to extend out the shell (0), a reverse lifting control assembly (5) capable of limiting the reverse rotation of the inclined tongue driving piece (3) is arranged in the shell (0), and the door lock is characterized in that the reverse lifting control assembly (5) comprises a driving switch (51) capable of moving up and down and a rotatable locking piece (52), the driving switch (51) drives the locking piece (52) to rotate through up and down movement, be formed with latch hook (521) on retaining member (52), be formed with on oblique tongue driving piece (3) can by spacing axle (31) that latch hook (521) hooked, be equipped with in drive switch (51) and outwards stretch out setting element (511), and with spring (512) that setting element (511) offset, spring (512) make setting element (511) have to drive switch (51) outer trend of stretching out, casing (0) serve to be formed with the confession positioning hole (01) of setting element (511) embedding.

2. A door lock with controllable back-lifting function according to claim 1, characterized in that a mounting through hole (513) is provided in the driving switch (51), the positioning element (511) is spherical and is disposed in the mounting through hole (513), the mounting through hole (513) includes an entrance port (5131) and an extension port (5132) which are different in diameter and are respectively disposed at two ends of the driving switch (51), the diameter of the positioning element (511) is smaller than the diameter of the entrance port (5131) and larger than the diameter of the extension port (5132), and the extension port (5132) faces to the end where the positioning through hole (01) is located.

3. A door lock with controllable back-lift function according to claim 1, characterized in that the driving switch (51) is formed with a tooth groove (514), and the locking member (52) is formed with a tooth block (522) engaged with the tooth groove (514).

4. The door lock with the controllable reverse lifting function according to claim 1, wherein a square core (32) for connecting a handle and a first inclined tongue driving portion (33) for driving the inclined tongue (1) to move are formed on the inclined tongue driving portion (3), a pulling plate (11) which is abutted against the first inclined tongue driving portion (33) is connected to the inclined tongue (1), a first torsion spring (02) which is abutted between the pulling plate (11) and the inner wall of the shell (0) is arranged in the shell (0), and the inclined tongue (1) has a tendency of extending outwards from the shell (0) due to the first torsion spring (02).

5. A door lock with controllable reverse lifting function according to claim 4, characterized in that the square core (32) is sleeved with a rotatable linkage piece (6), the linkage piece (6) is formed with a second latch tongue driving part (61) which is abutted against the pulling plate (11), and is hinged with a driving rod (62) which is abutted against the latch tongue (2).

6. The door lock with the controllable back-lifting function according to claim 5, characterized in that the driving rod (62) is formed with a guiding through hole (621), the square tongue (2) is connected with a pushing block (7) which is linked with the square tongue driving member (4), the driving rod (62) is connected with a limiting plug-in component (622) which passes through the guiding through hole (621) and is inserted into the pushing block (7), and the guiding through hole (621) can swing relative to the limiting plug-in component (622).

7. A door lock with controllable back-lifting function according to claim 6, characterized in that a gap is formed between the limit insert (622) and the guide through hole (621).

8. The door lock with the controllable reverse lifting function according to claim 6, wherein the latch bolt driving member (3) is formed with a pushing portion (34) capable of pushing the latch bolt driving member (4) to rotate, the latch bolt driving member (4) is formed with a linkage through hole (41) for connecting the pushing block (7), and the pushing block (7) is formed with a linkage convex body (71) extending into the linkage through hole (41).

9. The door lock with the controllable reverse lifting function according to claim 8, wherein a linkage groove (35) is formed on the latch bolt driving member (3), a limiting groove (72) is formed on the pushing block (7), a limiting plate (8) moving upwards along with the reverse rotation of the latch bolt driving member (3) is arranged in the housing (0), a linkage stopper (81) abutting against the linkage groove (35) and a limit stopper (82) abutting against the limiting groove (72) are formed on the limiting plate (8), a positioning protrusion (73) abutting against the limit stopper (82) is formed on the pushing block (7), a reset stopper (83) is formed on the limiting plate (8), a second torsion spring (03) abutting against the reset stopper (83) and the inner wall of the housing (0) is arranged in the housing (0), and the second torsion spring (03) makes the limiting plate (8) have a tendency of moving downwards, the lock cylinder is characterized in that a lock cylinder hole (04) for inserting a lock cylinder is formed in the shell (0), an unlocking groove (74) for allowing a lock cylinder shifting wheel to extend into is formed in the push block (7), and an unlocking stop block (84) pushed by the lock cylinder shifting wheel is formed in the limiting plate (8).

10. The door lock with the controllable back-lifting function according to claim 9, wherein a first guiding through hole (85) is formed on the limiting plate (8), a second guiding through hole (75) is formed on the pushing block (7), a guiding post (05) passing through the first guiding through hole (85) and the second guiding through hole (75) simultaneously is formed in the housing (0), the first guiding through hole (85) can move up and down relative to the guiding post (05), and the second guiding through hole (75) can move left and right relative to the guiding post (05).

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