Self-ejection door lock

Abstract

The invention discloses a self-ejection type door lock. The self-ejection type door lock comprises a lock shell, a latch bolt mechanism, a counter locking mechanism and a linkage mechanism. The latch bolt mechanism is arranged on the lock shell and comprises a latch bolt body and a first elastic piece, the latch bolt body is arranged on the lock shell in a telescopic mode, and the first elastic piece is used for driving the latch bolt body to stretch out; the back locking mechanism is arranged on the lock shell and comprises a back locking tongue body and a second elastic piece, the back locking tongue body is arranged on the lock shell in a telescopic mode, and the second elastic piece is used for driving the back locking tongue body to stretch out; the linkage mechanism is arranged on the lock shell and comprises a linkage locking piece and a third elastic piece, the linkage locking piece is movably arranged on the lock shell and has a locking position and an unlocking position, and when the counter lock tongue body retracts into the lock shell, the third elastic piece is used for driving the linkage locking piece to move to the locking position so as to limit the counter lock tongue body from stretching out; when the latch bolt body extends out, the latch bolt mechanism can drive the linkage locking piece to move to the unlocking position so as to allow the counter lock bolt body to extend out.

Description

Technical Field

[0001] The present invention relates to a hotel lock, in particular to a self-opening door lock. Background Art

[0002] Hotel room doors are typically equipped with a self-activating door lock that automatically extends a latch bolt when the door is closed. The self-activating door lock comprises a lock housing, a latch bolt mechanism, a latch bolt mechanism, and a locking mechanism. The latch bolt mechanism comprises a retractable latch bolt body and a first elastic member capable of driving the latch bolt body to extend. The latch bolt mechanism comprises a retractable latch bolt body and a second elastic member capable of driving the latch bolt body to extend. The locking mechanism comprises a locking member, an unlocking driver, and a locking driver. When the door is opened, the latch bolt body remains extended, and the locking member locks the latch bolt body, causing it to remain retracted. When the door is closed, the latch bolt body is first squeezed into the lock housing by the door frame, then re-extended to insert into the latch bolt groove in the door frame. The locking driver is then unlocked by the extended latch bolt body. The locking driver can then be activated, driving the locking member to rotate and clear the latch bolt body. The latch bolt body is then pushed by the second elastic member to automatically extend and insert into the latch bolt groove in the door frame, achieving automatic latching. When the door needs to be opened, the anti-locking bolt and the oblique bolt are retracted into the lock housing by the motor or the handle driving mechanism, and the locking member is driven by the locking driving member to relock the anti-locking bolt. The above-mentioned self-retracting door lock is still relatively complex in structure and has a high production cost. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a self-opening door lock that can simplify the structure and reduce production costs.

[0004] According to an embodiment of the present invention, a self-springing door lock comprises a lock housing, a latch bolt mechanism, an anti-lock mechanism and a linkage mechanism. The latch bolt mechanism is arranged on the lock housing, the latch bolt mechanism comprises a latch bolt body and a first elastic member, the latch bolt body is telescopically arranged on the lock housing, and the first elastic member is used to drive the latch bolt body to extend; the anti-lock mechanism is arranged on the lock housing, the anti-lock mechanism comprises an anti-lock bolt body and a second elastic member, the anti-lock bolt body is telescopically arranged on the lock housing, and the second elastic member is used to drive the anti-lock bolt body to extend; the linkage mechanism is arranged on the lock housing, the linkage mechanism comprises a linkage locking member and a third elastic member, the linkage locking member is movably arranged on the lock housing and has a locked position and an unlocked position, when the anti-lock bolt body is retracted into the lock housing, the third elastic member is used to drive the linkage locking member to move to the locked position to restrict the anti-lock bolt body from extending; when the latch bolt body extends, the latch bolt mechanism can drive the linkage locking member to move to the unlocked position to allow the anti-lock bolt body to extend.

[0005] The self-popular door lock according to the embodiment of the present invention has at least the following beneficial effects: during the door closing process, the inclined tongue body is first squeezed into the lock shell by the door frame, and then the first elastic member drives the inclined tongue body to pop out and insert into the inclined tongue groove of the door frame. During the extension of the inclined tongue body, the inclined tongue mechanism directly drives the linkage locking member to move to the unlocked position. At this time, the second elastic member can drive the anti-locking tongue body to extend and insert into the anti-locking groove of the door frame; when the door needs to be opened, the anti-locking tongue body retracts into the lock shell. At this time, the third elastic member directly drives the linkage locking member to move to the locked position and re-locks the anti-locking tongue body; the above-mentioned self-popular door lock directly drives the linkage locking member to move to unlock the anti-locking tongue through the extension process of the inclined tongue body, and no additional unlocking driving member is required to drive the linkage locking member to move to the unlocked position. The structure is significantly simplified, thereby reducing production costs.

[0006] According to some embodiments of the present invention, the linkage locking member is pivotally connected to the lock housing, and the lock housing is provided with a limiting mechanism, the limiting mechanism including a limiting tongue and a fourth elastic member, the limiting tongue being retractably provided on the lock housing, and the fourth elastic member being able to drive the limiting tongue to extend; when the limiting tongue is extended, the limiting tongue stops the linkage locking member from rotating from the locked position to the unlocked position; when the limiting tongue is retracted, the linkage locking member is allowed to rotate from the locked position to the unlocked position.

[0007] According to some embodiments of the present invention, a mating block is provided at the first end of the linkage locking member, and the inclined tongue mechanism further includes a pushing block member and a fifth elastic member. The pushing block member is movably connected to the inclined tongue body and can approach or move away from the linkage locking member. The fifth elastic member can drive the pushing block member to approach the linkage locking member. When the inclined tongue body is extended, the pushing block member pushes the mating block and can drive the linkage locking member to rotate.

[0008] According to some embodiments of the present invention, one end of the push block member is pivotally connected to the inclined tongue body and can swing relative to the inclined tongue body, and the other end of the push block member is provided with a pushing block for pushing the mating block, one end of the fifth elastic member is pivotally connected to the lock housing, and the other end of the fifth elastic member is connected to the other end of the push block member, and the fifth elastic member and the linkage locking member are respectively arranged on opposite sides of the inclined tongue body.

[0009] According to some embodiments of the present invention, the limiting tongue is provided with a limiting boss, and the first end of the linkage locking member is provided with a push block. When the limiting tongue is extended, the push block abuts against the limiting boss; when the limiting tongue is retracted, the push block and the limiting boss are staggered along the extension and contraction direction of the limiting tongue.

[0010] According to some embodiments of the present invention, the linkage locking member is located between the inclined tongue body and the anti-locking tongue body, the limiting tongue body is located between the inclined tongue body and the anti-locking tongue body, the middle part of the linkage locking member is pivotally connected to the lock housing, the first end of the linkage locking member is located between the limiting tongue body and the inclined tongue body, and the second end of the linkage locking member is used to engage with the anti-locking tongue body.

[0011] According to some embodiments of the present invention, the lock housing is provided with a handle drive mechanism, which includes a handle dial head and a transmission assembly. The handle dial head is rotatably connected to the lock housing, and the transmission assembly is movably connected to the lock housing. The handle dial head can drive the oblique tongue body to retract through the transmission assembly, and the handle dial head can drive the reverse lock tongue body to retract through the transmission assembly.

[0012] According to some embodiments of the present invention, the lock housing is provided with an anti-insertion mechanism, and the anti-insertion mechanism includes an anti-insertion plug-in and a sixth elastic member. The anti-insertion plug-in is provided with a first clamping block, and the inclined tongue body is provided with a first clamping slot. The anti-insertion plug-in is rotatably connected to the lock housing and can make the first clamping block approach or move away from the inclined tongue body. When the inclined tongue body is extended, the sixth elastic member can drive the anti-insertion plug-in to rotate to a position where the first clamping block is engaged with the first clamping slot, and the handle dial head can drive the anti-insertion plug-in to rotate to a position where the first clamping block is disengaged from the first clamping slot through the transmission assembly.

[0013] According to some embodiments of the present invention, the limiting tongue is provided with a reset stop surface, and when the limiting tongue is extended, the reset stop surface stops the anti-plug-in unit from rotating close to the oblique tongue.

[0014] According to some embodiments of the present invention, the anti-locking tongue body is provided with a second card slot, and the second end of the linkage locking member is provided with a second card block, and when the linkage locking member is in the locking position, the second card block is engaged with the second card slot; when the linkage locking member is in the unlocking position, the second card block is disengaged from the second card slot.

[0015] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0017] Figure 1 This is a three-dimensional schematic diagram of the self-opening door lock according to an embodiment of the present invention when the door is opened;

[0018] Figure 2This is a schematic diagram of the internal structure of the self-opening door lock according to an embodiment of the present invention when the door is opened;

[0019] Figure 3 This is a schematic diagram of the internal structure of the self-opening door lock according to an embodiment of the present invention when the inclined tongue and the limiting tongue are retracted during the door closing process;

[0020] Figure 4 This is a schematic diagram of the internal structure of a self-opening door lock according to an embodiment of the present invention when the limit tongue remains retracted and the oblique tongue extends during the door closing process;

[0021] Figure 5 This is a schematic diagram of the internal structure of the self-opening door lock when the door is closed according to an embodiment of the present invention;

[0022] Figure 6 Schematic diagram of partial structure explosion of an embodiment of the present invention.

[0023] Reference numerals:

[0024] Lock housing 100;

[0025] The inclined tongue mechanism 200, the inclined tongue body 210, the first slot 211, the first elastic member 220, the pushing block 230, the pushing block 231, and the fifth elastic member 240;

[0026] Anti-locking mechanism 300, anti-locking tongue 310, second locking slot 311, second elastic member 320;

[0027] Linkage mechanism 400, linkage locking member 410, matching block 411, abutting block 412, second locking block 413, first end 414, second end 415, third elastic member 420;

[0028] Limiting mechanism 500, limiting tongue 510, limiting boss 511, reset stop surface 512, fourth elastic member 520;

[0029] Handle drive mechanism 600, handle dial head 610, transmission assembly 620, main transmission frame 621, latch transmission member 622, reverse locking transmission member 623;

[0030] Anti-insertion mechanism 700 , anti-insertion mechanism 710 , first clamping block 711 , sixth elastic member 720 . DETAILED DESCRIPTION

[0031] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0032] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0033] In the description of the present invention, "a plurality" refers to more than two. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of the indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0035] Reference Figures 1 to 6 , is a self-springing door lock according to an embodiment of the present invention, comprising a lock housing 100, a latch bolt mechanism 200, an anti-lock mechanism 300, and a linkage mechanism 400. The latch bolt mechanism 200 is disposed in the lock housing 100, and comprises a latch bolt body 210 and a first elastic member 220. The latch bolt body 210 is retractably disposed in the lock housing 100, and the first elastic member 220 is used to drive the latch bolt body 210 to extend; the anti-lock mechanism 300 is disposed in the lock housing 100, and comprises an anti-lock bolt body 310 and a second elastic member 320. The anti-lock bolt body 310 is retractably disposed in the lock housing 100, and the second elastic member 320 is used to drive the anti-lock bolt body 310 to extend; the linkage mechanism 40 0 is arranged on the lock housing 100, and the linkage mechanism 400 includes a linkage locking member 410 and a third elastic member 420. The linkage locking member 410 is movably arranged on the lock housing 100 and has a locked position and an unlocked position. When the anti-lock bolt body 310 is retracted into the lock housing 100, the third elastic member 420 is used to drive the linkage locking member 410 to move to the locked position to restrict the anti-lock bolt body 310 from extending; when the oblique bolt body 210 is extended, the oblique bolt mechanism 200 can drive the linkage locking member 410 to move to the unlocked position to allow the anti-lock bolt body 310 to extend.

[0036] During the door closing process, the inclined tongue body 210 is first squeezed into the lock shell 100 by the door frame, and then the first elastic member 220 drives the inclined tongue body 210 to pop out and insert into the inclined tongue groove of the door frame. During the extension of the inclined tongue body 210, the inclined tongue mechanism 200 directly drives the linkage locking member 410 to move to the unlocked position. At this time, the second elastic member 320 can drive the anti-lock tongue body 310 to extend and insert into the anti-lock groove of the door frame; when the door needs to be opened, the anti-lock tongue body 310 is retracted into the lock shell 100. At this time, the third elastic member 420 directly drives the linkage locking member 410 to move to the locked position and re-locks the anti-lock tongue body 310; the above-mentioned self-spring door lock directly drives the linkage locking member 410 to move to unlock the anti-lock tongue through the extension process of the inclined tongue body 210. No additional unlocking drive member is required to drive the linkage locking member 410 to move to the unlocked position. The structure is significantly simplified, thereby reducing production costs.

[0037] In an embodiment, the linkage locking member 410 is pivotally connected to the lock housing 100, and the lock housing 100 is provided with a limiting mechanism 500, which includes a limiting tongue 510 and a fourth elastic member 520. The limiting tongue 510 is retractably provided on the lock housing 100, and the fourth elastic member 520 can drive the limiting tongue 510 to extend; when the limiting tongue 510 is extended, the limiting tongue 510 stops the linkage locking member 410 from rotating from the locked position to the unlocked position; when the limiting tongue 510 is retracted, the linkage locking member 410 is allowed to rotate from the locked position to the unlocked position.

[0038] During door opening, the limiting tongue 510 remains extended under the action of the fourth elastic member 520. Since the limiting tongue 510 blocks the linkage locking member 410 from rotating to the unlocked position, the reverse locking tongue 310 is prevented from accidentally extending when the door is open, thereby improving operational stability. During door closing, the limiting tongue 510 is squeezed into the lock housing 100 by the door frame and remains retracted within the lock housing 100 during door closing. At this time, the linkage locking member 410 is allowed to rotate to the unlocked position. When the oblique tongue 210 is pushed out by the first elastic member 220 and inserted into the oblique tongue groove, the oblique tongue mechanism 200 directly drives the linkage locking member 410 to rotate to the unlocked position, causing the reverse locking tongue 310 to automatically extend due to the push of the second elastic member 320.

[0039] Specifically, the oblique tongue body 210 , the reverse locking tongue body 310 and the limiting tongue body 510 are all connected to the lock housing 100 in a sliding manner along the left-right direction.

[0040] In an embodiment, a mating block 411 is provided at the first end 414 of the linkage locking member 410, and the inclined tongue mechanism 200 further includes a pushing block 230 and a fifth elastic member 240. The pushing block 230 is movably connected to the inclined tongue body 210 and can approach or move away from the linkage locking member 410. The fifth elastic member 240 can drive the pushing block 230 to approach the linkage locking member 410. When the inclined tongue body 210 is extended, the pushing block 230 pushes the mating block 411 and can drive the linkage locking member 410 to rotate.

[0041] Specifically, the extended length of the oblique tongue 210 is greater than the extended length of the limiting tongue 510. During door closing, the oblique tongue 210 first drives the push block 230 to retract, during which time the push block 230 contacts the mating block 411 of the linkage locking member 410. However, because the linkage locking member 410 is still restricted from rotation by the limiting tongue 510, the push block 230 cannot push the linkage locking member 410. The push block 230 is pushed away from the linkage locking member 410, causing the fifth elastic member 240 to elastically deform. Subsequently, the limiting tongue 510 retracts to allow the linkage locking member 410 to rotate. During door closing, the limiting tongue 510 is continuously squeezed by the door frame and remains retracted. When the inclined tongue 210 extends, the fifth elastic member 240 drives the push block 230 toward the linkage locking member 410. The push block 230 pushes against the engaging block 411 of the linkage locking member 410, allowing the linkage locking member 410 to rotate to the unlocked position. Subsequently, the second locking member drives the anti-locking tongue 310 to extend. The aforementioned inclined tongue mechanism 200 prevents the linkage locking member 410 from rotating during the retraction of the inclined tongue 210, thereby improving the operational stability of the self-activating door lock.

[0042] In this embodiment, one end of the push block 230 is pivotally connected to the latch bolt 210 and can swing relative to the latch bolt 210. The other end of the push block 230 is provided with a pushing block 231 for pushing the mating block 411. One end of the fifth elastic member 240 is pivotally connected to the lock housing 100, and the other end of the fifth elastic member 240 is connected to the other end of the push block 230. The fifth elastic member 240 and the interlocking locking member 410 are disposed on opposite sides of the latch bolt 210. By swinging the end of the push block 230, the pushing block 231 of the push block 230 is moved toward or away from the interlocking locking member 410. This structure is simple, easy to implement, and the overall layout is relatively compact.

[0043] In the embodiment, the limiting tongue 510 is provided with a limiting boss 511, and the first end 414 of the linkage locking member 410 is provided with a resisting block 412. When the limiting tongue 510 is extended, the resisting block 412 abuts against the limiting boss 511; when the limiting tongue 510 is retracted, the resisting block 412 and the limiting boss 511 are offset along the extension and retraction direction of the limiting tongue 510. When the limiting tongue 510 is extended, the limiting boss 511 abuts against the resisting block 412 of the linkage locking member 410, thereby limiting the rotation of the linkage locking member 410, thereby preventing the linkage locking member 410 from rotating to the unlocked position; when the limiting tongue 510 is retracted, the limiting boss 511 and the resisting block 412 are offset, allowing the linkage locking member 410 to rotate to the unlocked position.

[0044] It is conceivable that, in other embodiments, the limiting tongue 510 may also limit or allow the linkage locking member 410 to rotate in other ways. For example, when the limiting tongue 510 is extended, the limiting tongue 510 is plugged into and fitted with the linkage locking member 410 to limit the rotation of the linkage locking member 410; when the limiting tongue 510 is retracted, the limiting tongue 510 is separated from the linkage locking member 410 to allow the linkage locking member 410 to rotate.

[0045] It is conceivable that in other embodiments, the push block 230 can also be slidably connected to the oblique tongue body 210, and the position can be adjusted by sliding, and cooperate with the fifth elastic member 240 to push the matching block 411 of the linkage locking member 410.

[0046] In this embodiment, the linkage locking member 410 is located between the oblique tongue body 210 and the anti-locking tongue body 310, the limiting tongue body 510 is located between the oblique tongue body 210 and the anti-locking tongue body 310, the middle portion of the linkage locking member 410 is pivotally connected to the lock housing 100, the first end 414 of the linkage locking member 410 is located between the limiting tongue body 510 and the oblique tongue body 210, and the second end 415 of the linkage locking member 410 is used to engage with the anti-locking tongue body 310. The linkage locking member 410 adopts a lever-like structure to achieve the switching of the linkage locking member 410 between the unlocked position and the locked position, resulting in a simple structure and a good linkage effect.

[0047] It is conceivable that in other embodiments, the linkage locking member 410 can also be switched between the locked position and the unlocked position by being slidably connected to the lock housing 100, and those skilled in the art can make specific choices according to actual needs.

[0048] In an embodiment, the lock housing 100 is provided with a handle drive mechanism 600, which includes a handle dial head 610 and a transmission assembly 620. The handle dial head 610 is rotatably connected to the lock housing 100, and the transmission assembly 620 is movably connected to the lock housing 100. The handle dial head 610 can drive the oblique tongue body 210 to retract through the transmission assembly 620, and the handle dial head 610 can drive the reverse lock tongue body 310 to retract through the transmission assembly 620.

[0049] A handle drive mechanism 600 is provided, and when the user opens the door, he can directly rotate the handle to rotate the handle dial head 610, and then drive the anti-locking tongue body 310 and the inclined tongue body 210 to retract through the transmission component 620 to open the door, which is convenient for the user to perform the door opening operation and the use process is relatively simple.

[0050] Specifically, the transmission assembly 620 includes a main transmission frame 621, a slant tongue transmission member 622 and an anti-lock transmission member 623. The main transmission frame 621 is connected to the lock housing 100 in a sliding manner along the up and down directions. One end of the slant tongue transmission member 622 is rotatably connected to the lock housing 100. When the main transmission frame 621 slides up and down, it pushes and drives the slant tongue transmission member 622 to rotate, and uses the end of the slant tongue transmission member 622 to move the slant tongue body 210 so that the slant tongue body 210 moves left and right; the anti-lock transmission member 623 is also rotatably connected to the lock housing 100. When the main transmission frame 621 slides up and down, it pushes and drives the anti-lock transmission member 623 to rotate, and drives the anti-lock tongue body 310 to extend and retract left and right through the slide groove slider structure inclined relative to the left and right directions.

[0051] It is understood that in other embodiments, the transmission assembly 620 can also be driven by other means, such as by a plurality of connecting rod slider structures. The structure of the handle drive mechanism 600 is relatively common in the field of door locks and will not be described in detail here.

[0052] In an embodiment, the lock housing 100 is provided with an anti-insertion mechanism 700, which includes an anti-insertion plug-in unit 710 and a sixth elastic member 720. The anti-insertion plug-in unit 710 is provided with a first clamping block 711, and the inclined tongue body 210 is provided with a first clamping slot 211. The anti-insertion plug-in unit 710 is rotatably connected to the lock housing 100 and can make the first clamping block 711 approach or move away from the inclined tongue body 210. When the inclined tongue body 210 is extended, the sixth elastic member 720 can drive the anti-insertion plug-in unit 710 to rotate to a position where the first clamping block 711 is clamped in the first clamping slot 211, and the handle dial head 610 can drive the anti-insertion plug-in unit 710 to rotate through the transmission assembly 620 to a position where the first clamping block 711 is disengaged from the first clamping slot 211.

[0053] An anti-insertion mechanism 700 is provided. When the inclined tongue body 210 is extended and inserted into the inclined tongue groove, the anti-insertion mechanism 710 cooperates with the first slot 211 of the inclined tongue body 210 through the first clamping block 711 to push against and limit the retraction of the inclined tongue body 210, thereby preventing the risk of the inclined tongue body 210 being retracted by criminals using a card to insert into the door gap, thereby preventing the inclined tongue body 210 from being squeezed by criminals, thereby further improving safety during door closing.

[0054] Specifically, when the main transmission frame 621 slides up and down, the anti-plug-in unit 710 can be directly driven to rotate, so that the anti-plug-in unit 710 rotates away from the oblique tongue body 210, thereby facilitating unlocking by handle.

[0055] Specifically, the first elastic member 220 is a compression spring, one end of which abuts the lock housing 100 and the other end abuts the oblique bolt 210. The second elastic member 320 is a torsion spring, mounted on the lock housing 100 and connected to the anti-lock transmission member 623, indirectly driving the anti-lock bolt 310 to extend via the anti-lock transmission member 623. The third elastic member 420 is a torsion spring, mounted on the lock housing 100 and connected to the linkage locking member 410. It is conceivable that in other embodiments, the first elastic member 220 may also be a structure such as an elastic rubber block or a spring, the second elastic member 320 may also be a compression spring, an elastic rubber block, or a spring, directly abutting the anti-lock bolt 310 to drive it to extend, and the third elastic member 420 may also be a structure such as a spring or a compression spring.

[0056] Specifically, the fourth elastic member 520 is a compression spring, one end of which abuts against the lock housing 100 and the other end abuts against the limiting tongue 510. It is conceivable that the fourth elastic member 520 can also be a structure such as an elastic rubber block or a spring.

[0057] Specifically, the fifth elastic member 240 is a spring, one end of which is connected to the lock housing 100 and the other end of which is connected to the push block 230. It is understood that in other embodiments, the fifth elastic member 240 can also be a torsion spring installed on the inclined bolt body 210 and connected to the push block 230.

[0058] Specifically, the sixth elastic member 720 is a torsion spring, which is installed on the lock housing 100 and connected to the anti-insertion 710. It is conceivable that in other embodiments, the sixth elastic member 720 can also be a compression spring or a spring.

[0059] In this embodiment, the stop tongue 510 is provided with a return stop surface 512. When the stop tongue 510 is extended, the return stop surface 512 prevents the anti-insert 710 from rotating closer to the oblique tongue 210. The return stop surface 512 of the stop tongue 510 prevents the anti-insert 710 from rotating, preventing it from getting stuck against the oblique tongue 210 during door opening, thereby preventing the oblique tongue 210 from being unable to retract and improving operational stability.

[0060] In an embodiment, the anti-locking tongue body 310 is provided with a second card slot 311, and the second end 415 of the linkage locking member 410 is provided with a second card block 413. When the linkage locking member 410 is in the locking position, the second card block 413 is engaged with the second card slot 311; when the linkage locking member 410 is in the unlocking position, the second card block 413 is disengaged from the second card slot 311.

[0061] The position of the anti-locking tongue 310 is locked by engaging the second locking block 413 with the second locking slot 311 , which has a simple structure and is easy to implement.

[0062] It is conceivable that in other embodiments, an insert block may be provided on the anti-lock tongue body 310, and a slot may be provided on the linkage locking member 410. When in the locked position, the insert block is inserted into the slot, so that the linkage locking member 410 can fix the position of the anti-lock tongue body 310; when in the unlocked position, the insert block can be disengaged from the slot, so that the linkage locking member 410 can allow the anti-lock tongue body 310 to extend.

[0063] Specifically, the working process of the self-popular door lock of the present invention is as follows: when the door is not closed, the inclined tongue body 210 and the limiting tongue body 510 are extended, the linkage locking member 410 is in the locked position, the anti-locking tongue body 310 remains retracted, and the limiting boss 511 abuts against the top block 412, thereby limiting the rotation of the linkage locking member 410.

[0064] During the door closing process, the inclined tongue body 210 and the limiting tongue body 510 are first squeezed in by the door frame, and then the limiting tongue body 510 maintains the retracted position, so that the limiting boss 511 is staggered with the push block 412, allowing the linkage locking member 410 to rotate, and the inclined tongue body 210 extends out and inserts into the inclined tongue groove of the door frame. During the extension process, the pushing block 231 of the pushing block 230 pushes the matching block 411 of the linkage locking member 410, so that the linkage locking member 410 rotates to the unlocked position, and then the anti-locking tongue body 310 is pushed out by the second elastic member 320, and the anti-insertion plug-in 710 is driven by the sixth elastic member 720 to engage with the inclined tongue body 210, realizing the anti-insertion function of the inclined tongue body 210 and completing the door closing operation.

[0065] During the door opening process, the user drives the anti-plug-in element 710 via the handle drive mechanism 600 to disengage the oblique tongue 210, causing the oblique tongue 210 and the anti-lock tongue 310 to retract. The third elastic member 420 then drives the interlocking locking member 410 to rotate to the locked position, relocking the anti-lock tongue 310 and keeping it retracted. The door lock then leaves the door frame position, and the limiting tongue 510 extends, re-engaging the limiting boss 511 with the abutting block 412, re-limiting the position of the interlocking locking member 410. This prevents the push block 230 from rotating the interlocking locking member 410 during the extension of the oblique tongue 210. After the limiting tongue 510 and the oblique tongue 210 are extended, the door opening operation is complete.

[0066] When the limiting tongue 510 is extended, the position of the anti-plug-in element 710 is limited by the reset stop surface 512 to prevent the anti-plug-in element 710 from being engaged with the extended oblique tongue 210.

[0067] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0068] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A self-opening door lock, characterized in that: include: Lock housing (100); A tilted tongue mechanism (200) is provided on the lock housing (100), the tilted tongue mechanism (200) comprising a tilted tongue body (210) and a first elastic member (220), the tilted tongue body (210) being telescopically provided on the lock housing (100), and the first elastic member (220) being used for driving the tilted tongue body (210) to extend; A reverse locking mechanism (300) is provided on the lock housing (100), the reverse locking mechanism (300) comprising a reverse locking tongue (310) and a second elastic member (320), the reverse locking tongue (310) being retractably provided on the lock housing (100), and the second elastic member (320) being used for driving the reverse locking tongue (310) to extend; A linkage mechanism (400) is provided on the lock housing (100), and the linkage mechanism (400) comprises a linkage locking member (410) and a third elastic member (420). The linkage locking member (410) is movably provided on the lock housing (100) and has a locking position and an unlocking position. When the anti-locking tongue body (310) is retracted into the lock housing (100), the third elastic member (420) is used to drive the linkage locking member (410) to move to the locking position to restrict the anti-locking tongue body (310) from extending; when the oblique tongue body (210) is extended, the oblique tongue mechanism (200) can drive the linkage locking member (410) to move to the unlocking position to allow the anti-locking tongue body (310) to extend.

2. The self-opening door lock according to claim 1, characterized in that: The linkage locking member (410) is pivotally connected to the lock housing (100), and the lock housing (100) is provided with a limiting mechanism (500), and the limiting mechanism (500) includes a limiting tongue (510) and a fourth elastic member (520), and the limiting tongue (510) is telescopically arranged on the lock housing (100), and the fourth elastic member (520) can drive the limiting tongue (510) to extend; when the limiting tongue (510) is extended, the limiting tongue (510) stops the linkage locking member (410) from rotating from the locking position to the unlocking position; when the limiting tongue (510) is retracted, the linkage locking member (410) is allowed to rotate from the locking position to the unlocking position.

3. The self-opening door lock according to claim 2, characterized in that: The first end (414) of the linkage locking member (410) is provided with a matching block (411). The inclined tongue mechanism (200) further includes a push block member (230) and a fifth elastic member (240). The push block member (230) is movably connected to the inclined tongue body (210) and can approach or move away from the linkage locking member (410). The fifth elastic member (240) can drive the push block member (230) to approach the linkage locking member (410). When the inclined tongue body (210) is extended, the push block member (230) pushes the matching block (411) and can drive the linkage locking member (410) to rotate.

4. The self-opening door lock according to claim 3, characterized in that: One end of the push block member (230) is pivotally connected to the oblique tongue body (210) and can swing relative to the oblique tongue body (210); the other end of the push block member (230) is provided with a pushing block (231) for pushing the matching block (411); one end of the fifth elastic member (240) is pivotally connected to the lock housing (100); the other end of the fifth elastic member (240) is connected to the other end of the push block member (230); the fifth elastic member (240) and the linkage locking member (410) are respectively arranged on opposite sides of the oblique tongue body (210).

5. The self-opening door lock according to claim 2, characterized in that: The limiting tongue (510) is provided with a limiting boss (511), and the first end (414) of the linkage locking member (410) is provided with a push-up block (412). When the limiting tongue (510) is extended, the push-up block (412) abuts against the limiting boss (511); when the limiting tongue (510) is retracted, the push-up block (412) and the limiting boss (511) are staggered along the extension and contraction direction of the limiting tongue (510).

6. The self-opening door lock according to claim 5, characterized in that: The linkage locking member (410) is located between the oblique tongue body (210) and the anti-locking tongue body (310), the limiting tongue body (510) is located between the oblique tongue body (210) and the anti-locking tongue body (310), the middle part of the linkage locking member (410) is pivotally connected to the lock housing (100), the first end (414) of the linkage locking member (410) is located between the limiting tongue body (510) and the oblique tongue body (210), and the second end (415) of the linkage locking member (410) is used for engaging with the anti-locking tongue body (310).

7. The self-opening door lock according to claim 2, characterized in that: The lock housing (100) is provided with a handle drive mechanism (600), and the handle drive mechanism (600) includes a handle dial head (610) and a transmission assembly (620). The handle dial head (610) is rotatably connected to the lock housing (100), and the transmission assembly (620) is movably connected to the lock housing (100). The handle dial head (610) can drive the inclined bolt body (210) to retract through the transmission assembly (620), and the handle dial head (610) can drive the reverse lock bolt body (310) to retract through the transmission assembly (620).

8. The self-opening door lock according to claim 7, characterized in that: The lock housing (100) is provided with an anti-insertion mechanism (700), and the anti-insertion mechanism (700) includes an anti-insertion plug-in unit (710) and a sixth elastic member (720). The anti-insertion plug-in unit (710) is provided with a first clamping block (711), and the inclined tongue body (210) is provided with a first clamping slot (211). The anti-insertion plug-in unit (710) is rotatably connected to the lock housing (100) and can make the first clamping block (711) approach or move away from the inclined tongue body (210). When the inclined tongue body (210) is extended, the sixth elastic member (720) can drive the anti-insertion plug-in unit (710) to rotate to a position where the first clamping block (711) is clamped in the first clamping slot (211), and the handle dial head (610) can drive the anti-insertion plug-in unit (710) to rotate to a position where the first clamping block (711) is separated from the first clamping slot (211) through the transmission assembly (620).

9. The self-opening door lock according to claim 8, characterized in that: The limiting tongue (510) is provided with a reset stop surface (512). When the limiting tongue (510) is extended, the reset stop surface (512) stops the anti-plug-in (710) from rotating close to the oblique tongue (210).

10. The self-opening door lock according to claim 1, characterized in that: The anti-locking tongue body (310) is provided with a second card slot (311), and the second end (415) of the linkage locking member (410) is provided with a second card block (413); when the linkage locking member (410) is in the locking position, the second card block (413) is engaged with the second card slot (311); when the linkage locking member (410) is in the unlocking position, the second card block (413) is disengaged from the second card slot (311).

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