Lock body structure and security door

Abstract

The application relates to the technical field of lock structure, and discloses a lock body structure and a security door, wherein one kind of lock body structure comprises a base shell; a locking structure comprising a lock tongue, a first ground hook and a second ground hook, the lock tongue is provided with a main tongue push plate and has a locking position and an unlocking position, the main tongue push plate is in sliding fit with the base shell, the main tongue push plate is provided with a pushing groove, the main tongue push plate, the first ground hook and the second ground hook are all provided with a rack; a driving structure comprising an unlocking piece arranged on the base shell and moving along an arc track, the unlocking piece is provided with a pushing block; a transmission structure, the transmission structure comprises coaxially arranged first and second gears which are fixedly connected, the first gear is in transmission fit with the rack on the main tongue push plate, the second gear is in transmission fit with the rack of the first ground hook and the rack of the second ground hook respectively, and the application solves the problem that the movement resistance of the action structure inside the lock body is large, and a large burden is caused on the lock body structure and a driving motor.

Description

Technical Field

[0001] This invention relates to the field of lock structure technology, specifically to a lock body structure and a security door. Background Technology

[0002] In the field of locks, whether electronic or traditional mechanical, locks rely on the mechanical structure inside the lock body to convert the torque from the unlocking motor, lock cylinder, or door handle into linear motion of the bolt and deadbolt, thereby achieving locking or unlocking.

[0003] In related technologies, the torque from the drive motor, lock cylinder, or door handle is usually converted into linear motion through a push plate with a track groove and a slider, or through the cooperation of gears and racks. The direction of the linear transmission is then changed by a push plate with a slant groove and a corresponding slider, thereby ultimately driving the bolt and deadbolt to move and complete the locking or unlocking action.

[0004] However, in the aforementioned related technologies, the cooperation between the inclined groove push plate and the slider will bring great resistance to the movement of the internal structure of the lock body, put a great burden on the drive motor or other lock body structures, and is prone to jamming, which is very inconvenient. Summary of the Invention

[0005] In view of this, the present invention provides a lock body structure and a security door to solve the problem of high movement resistance in the internal moving structure of the lock body, which puts a heavy burden on the lock body structure and the drive motor.

[0006] In a first aspect, the present invention provides a lock body structure, comprising: a base shell; a locking structure including a bolt, a first ground hook, and a second ground hook, wherein the bolt is provided with a main bolt push plate and has a locked position and an unlocked position, the main bolt push plate is slidably engaged with the base shell so that the bolt can switch between the locked position and the unlocked position, the main bolt push plate is provided with a toggle groove, the first ground hook and the second ground hook are respectively slidably engaged with the base shell in the same direction but facing opposite directions, and the main bolt push plate, the first ground hook and the second ground hook are each provided with a rack; a driving structure including an unlocking component disposed on the base shell and moving along an arc trajectory, the unlocking component being provided with a toggle block adapted to the toggle groove, suitable for driving the bolt to switch between the locked position and the unlocked position; and a transmission structure including a first gear and a second gear coaxially disposed and fixedly connected, the first gear engaging with the rack on the main bolt push plate, the second gear engaging with the rack of the first ground hook and the rack of the second ground hook respectively, and the transmission direction of the second gear to the first ground hook and the second ground hook being opposite.

[0007] Beneficial effects: When the unlocking mechanism is driven by a mechanical lock cylinder, door handle, or unlocking motor, the actuating block on the unlocking mechanism pushes the main tongue push plate, causing it to move between the locked and unlocked positions. Simultaneously, the rack of the main tongue push plate engages with the first gear, and the second gear, which is fixedly connected to the first gear, meshes with the first ground hook and the second ground hook respectively. Thus, when the main tongue push plate moves, it synchronously drives the first ground hook and the second ground hook to extend or retract, completing the locking or unlocking action in sync with the lock tongue. Since the entire transmission mechanism does not need to rely on the inclined slide to change the direction of linear motion, and the transmission ratio between the lock tongue and the first or second ground hook is determined by the parameters of the first and second gears, the locking and unlocking actions of the lock body structure have low resistance and a stable transmission ratio, making the unlocking and locking actions of the lock smoother and more fluid, thus avoiding jamming and improving the user's operating experience.

[0008] In one optional embodiment, the drive structure further includes an unlocking dial that rotates with the base housing, the unlocking dial being provided with a third gear, and the unlocking component being provided with a fourth gear, the third gear and the fourth gear being in a transmission engagement.

[0009] Beneficial effects: By setting an unlocking dial, which is linked to the unlocking component through the transmission of the third and fourth gears, the rotation of the unlocking dial can drive the bolt, the first and second ground hooks to complete the unlocking action. This makes it easier for the lock to be unlocked in multiple ways. For example, the unlocking component can be driven by the mechanical lock cylinder, while the unlocking dial can be driven by the rotation of the door handle, thus improving the versatility of the lock's functions.

[0010] In one optional embodiment, the lock body structure further includes a secondary tongue, on which a slide rod is provided. The slide rod is slidably engaged with the base shell. A mounting seat is provided inside the base shell. A pressure plate is provided on the slide rod. A first elastic element is provided between the pressure plate and the mounting seat. The first elastic element is adapted to push the secondary tongue to the outside of the base shell. A shift fork structure adapted to slide the slide rod is provided inside the base shell. The shift fork structure is linked with the unlocking dial.

[0011] Beneficial effects: The lock has a secondary tongue structure, which facilitates automatic locking and limiting of the door when it is closed. Under the action of the first elastic element, the secondary tongue structure of the lock remains extended from the base shell, and can be pulled into the base shell by the sliding rod driven by the fork, thereby enabling the secondary tongue to complete the unlocking action.

[0012] In one optional embodiment, the fork structure includes a rocker arm rotatably connected to the base shell, a toggle end is provided on the outer peripheral sidewall of the unlocking wheel, the toggle end is adapted to push the rocker arm to deflect, and a sliding plate is provided on the slide rod that slides with the base shell, the rocker arm abutting against the sliding plate.

[0013] Beneficial effects: By setting a toggle end on the unlocking dial that is linked to the rocker arm, when the unlocking dial rotates, the rocker arm deflects synchronously and pushes the sliding plate. The sliding plate pulls the sliding rod, thereby pulling the secondary tongue into the base housing, realizing the unlocking action of the secondary tongue. At the same time, since the unlocking dial is linked to the unlocking component through the cooperation of the third and fourth gears, when the unlocking component is driven to unlock the lock tongue, the secondary tongue can move synchronously under the transmission of each structure, cooperating with the lock tongue and the first and second ground hooks to complete the unlocking action.

[0014] In one optional embodiment, the shift fork structure further includes a transmission shift plate rotatably connected to the base shell. A first shift rod and a second shift rod are fixedly provided on the periphery of the transmission shift plate. The first shift rod is adapted to push the swing arm to deflect, and the second shift rod is adapted to push the shifting end to deflect.

[0015] Beneficial effects: By setting a transmission paddle and installing a first and second lever on the circumferential sidewall of the transmission paddle, the transmission distance between the actuating end and the swing arm is extended, improving the structure's adaptability to different lock models. At the same time, a flange suitable for the first lever to push is set on the swing arm. By adjusting the position of the flange, the position where the first lever and the swing arm abut can be adjusted, thereby adjusting the length of the first lever and controlling the length ratio between the first and second levers. This facilitates the use of the lever principle to reduce the rotational resistance of the unlocking wheel, further improving the smoothness of the structure's movement.

[0016] In one optional embodiment, the base shell is provided with an arc-shaped mounting plate, and the arc-shaped mounting plate is coaxially provided with an arc-shaped slide rail extending in an arc shape. The unlocking component is an arc-shaped slider that cooperates with the fan-shaped slide rail, and the fourth gear is a fan-shaped gear.

[0017] Beneficial effects: By setting an arc-shaped mounting plate and making the unlocking component cooperate with the arc-shaped slide rail on the arc-shaped mounting plate to realize the movement of the unlocking component along the arc trajectory, and by configuring the fourth gear as a sector gear, compared with the method of directly using a shaft, wheel or gear as the unlocking component, the space inside the base shell is saved and the internal structure of the lock body is made more compact.

[0018] In one optional embodiment, the base shell is rotatably connected to a drive column coaxially arranged with the arc-shaped slide rail. The peripheral sidewall of the drive column is provided with a drive block adapted to push the unlocking member to slide along the arc-shaped slide rail. The drive column is adapted to be driven by the lock cylinder of the lock, or the drive column is adapted to be driven by an unlocking motor.

[0019] Beneficial effects: By setting a drive column and pushing the unlocking dial through the drive block on the drive column, an idle stroke is provided for the rotation of the lock cylinder or unlocking motor, thus meeting the unlocking action requirements of the lock cylinder or unlocking motor.

[0020] In one optional embodiment, the unlocking member has a first limit position and a second limit position within the arc-shaped slide rail. When the unlocking member is located at the first limit position, the locking tongue is located at the locked position. When the unlocking member is located at the second limit position, the locking tongue is located at the unlocked position. A second elastic member is provided within the base shell. The second elastic member is adapted to limit the unlocking member located at the first limit position, or the second elastic member is adapted to limit the unlocking member located at the second limit position.

[0021] Beneficial effects: By applying elastic force to the unlocking component through the elastic element, when the unlocking component is in the first limit position or the second limit position, the elastic force of the elastic element keeps the unlocking component in the first limit position or the second limit position, thereby improving the stability of the lock in the unlocked and locked states, and thus improving the stability of the lock function.

[0022] In one optional embodiment, the second elastic element is a torsion spring, one end of which is fixedly connected to the torsion spring and the other end is fixedly connected to the unlocking element. The end of the torsion spring that is fixedly connected to the base shell is located on one side of the arc-shaped mounting plate and is positioned opposite to the middle of the arc-shaped slide rail.

[0023] Beneficial effects: By selecting a torsion spring as the elastic element, one end of the torsion spring is located on one side of the arc-shaped mounting plate. When the unlocking component moves to the middle position between the first and second extreme positions, the torsion spring is compressed. Thus, when the unlocking component moves to the first or second extreme position, the elastic force of the torsion spring is released, which helps to push the unlocking component to move to the first or second extreme position.

[0024] Secondly, the present invention also provides a security door, comprising: a door body; the aforementioned lock body structure, wherein the base shell is mounted on the door body.

[0025] Beneficial effects: By adopting the above-described lock body structure, the movement resistance of each component within the lock body is reduced during the unlocking process of the security door, making it less prone to jamming and thus allowing for easier and smoother operation by the user. At the same time, the lock body structure is compact and small in size, meeting the needs of security doors of different sizes. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram illustrating the internal structure of a lock body structure according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of a lock body structure according to an embodiment of the present invention, showing another perspective of its internal structure;

[0029] Figure 3 This is a schematic diagram of the transmission relationship of the drive structure in a lock body structure according to an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100. Base shell; 101. Arc-shaped mounting plate; 1011. Arc-shaped slide rail; 102. Drive column; 1021. Drive block; 103. Second elastic element; 200. Locking structure; 201. Lock tongue; 2011. Main tongue push plate; 20111. Actuating groove; 202. First ground hook; 203. Second ground hook; 300. Drive structure; 301. Unlocking element; 3011. Actuating block; 3012. Fourth gear; 302. Unlocking dial; 3021. Third gear; 3022. Actuating end; 400. Transmission structure; 401. First gear; 402. Second gear; 500. Secondary tongue; 501. Slide rod; 5011. Sliding piece; 502. Mounting base; 503. Pressure plate; 504. First elastic element; 600. Shift fork; 601. Swing rod; 602. Transmission paddle; 6021. First lever; 6022. Second lever. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] The following is combined Figures 1 to 3 The following describes embodiments of the present invention.

[0034] According to an embodiment of the present invention, a lock body structure and a security door are provided. Please refer to [link / reference]. Figures 1 to 3 The system includes: a base shell 100; a locking structure 200, including a locking tongue 201, a first ground hook 202, and a second ground hook 203. The locking tongue 201 is provided with a main tongue push plate 2011 and has a locked position and an unlocked position. The main tongue push plate 2011 slides with the base shell 100, allowing the locking tongue 201 to switch between the locked and unlocked positions. The main tongue push plate 2011 is provided with a toggle groove 20111. The first ground hook 202 and the second ground hook 203 slide with the base shell 100 in the same direction but facing opposite directions. The main tongue push plate 2011, the first ground hook 202, and the second ground hook 203 are all provided with racks; and a drive structure 300. The system includes an unlocking component 301 mounted on the base shell 100 and moving along an arc trajectory. The unlocking component 301 is provided with a toggle block 3011 adapted to the toggle groove 20111, which is suitable for driving the locking tongue 201 to switch between the locked position and the unlocked position. The transmission structure 400 includes a first gear 401 and a second gear 402 coaxially arranged and fixedly connected. The first gear 401 is engaged with the rack on the main tongue push plate 2011. The second gear 402 is engaged with the rack of the first ground hook 202 and the rack of the second ground hook 203 respectively. The transmission direction of the second gear 402 to the first ground hook 202 and the second ground hook 203 is opposite.

[0035] Specifically, the base shell 100 can be the outer shell of the lock body or the door structure of the security door. The latch 201 can extend from the base shell 100 toward the lock hole. The extension direction of the first ground hook 202 and the second ground hook 203 is perpendicular to the extension direction of the latch 201, and the extension directions of the first ground hook 202 and the second ground hook 203 are opposite.

[0036] In addition, specifically, the unlocking component 301 can rotate synchronously with the lock cylinder, or synchronously with the motor shaft of the unlocking motor, or synchronously with the door handle shaft.

[0037] Additionally, it should be noted that this embodiment does not limit the specific form of the unlocking component 301. In some embodiments, the unlocking component 301 can be a rotating component rotatably connected within the base housing 100, such as a gear or a ring. The unlocking component 301 can also take other forms. The first gear 401 and the second gear 402 are fixedly connected to each other by being mounted on the same rotating shaft. The first gear 401 and the second gear 402 can achieve transmission by directly meshing with the corresponding rack. In some embodiments not shown, transmission can also be achieved through the meshing and transition of other auxiliary gears or rack structures.

[0038] In this embodiment, when the unlocking component 301 is driven by a drive source such as a mechanical lock cylinder, door handle, or unlocking motor, the actuating block 3011 on the unlocking component 301 begins to push the main tongue push plate 2011, thereby causing the main tongue push plate 2011 to move between the locked position and the unlocked position. At the same time, since the rack of the main tongue push plate 2011 is engaged with the first gear 401, and the second gear 402, which is fixedly connected to the first gear 401, meshes with the first ground hook 202 and the second ground hook 203 respectively, the first ground hook is synchronously driven when the main tongue push plate 2011 moves. The first gear 401 and the second gear 402 extend or retract, and lock or unlock simultaneously with the first gear 402 and the second gear 403. Since the entire transmission mechanism does not need to rely on the inclined slide to change the direction of linear motion, and the transmission ratio between the first gear 401 and the first gear 202 or the second gear 203 is determined by the parameters of the first gear 401 and the second gear 402, the locking and unlocking actions of the lock body structure have low resistance and a stable transmission ratio, making the unlocking and locking actions of the lock smoother and more seamless, thereby avoiding the situation of movement jamming and improving the user's operating experience.

[0039] In one embodiment, the drive structure 300 further includes an unlocking dial 302 that rotatably engages with the base housing 100. The unlocking dial 302 is provided with a third gear 3021, and the unlocking member 301 is provided with a fourth gear 3012. The third gear 3021 and the fourth gear 3012 are in a transmission engagement.

[0040] Specifically, the unlocking dial 302 can rotate synchronously with the lock cylinder, synchronously with the motor shaft of the unlocking motor, or synchronously with the door handle shaft.

[0041] It should be noted that the third gear 3021 and the fourth gear 3012 can achieve transmission by direct meshing. In some embodiments not shown, they can also achieve transmission by meshing with other gears or rack structures. For example, in this embodiment, two coaxial sector gears mesh with the third gear 3021 or the fourth gear 3012 respectively, thereby realizing the transmission between the third gear 3021 and the fourth gear 3012. At the same time, the transmission ratio between the third gear 3021 and the fourth gear 3012 can be adjusted by adjusting the module, number of teeth and other parameters of the two sector gears, making it easier to unlock the handle.

[0042] In this embodiment, by setting an unlocking dial 302, the unlocking dial 302 is linked with the unlocking component 301 through the transmission cooperation of the third gear 3021 and the fourth gear 3012, so that the rotation of the unlocking dial 302 can drive the lock tongue 201, the first ground hook 202 and the second ground hook 203 to complete the unlocking action, which makes it convenient for the lock to be unlocked in multiple ways. For example, the unlocking component 301 is driven by the mechanical lock cylinder, while the unlocking dial 302 is driven by the rotation of the door handle, which improves the versatility of the lock's functions.

[0043] In one embodiment, the lock body structure further includes a secondary tongue 500, on which a slide rod 501 is provided. The slide rod 501 is slidably engaged with the base shell 100. A mounting seat 502 is provided inside the base shell 100. A pressure plate 503 is provided on the slide rod 501. A first elastic element 504 is provided between the pressure plate 503 and the mounting seat 502. The first elastic element 504 is adapted to push the secondary tongue 500 to the outside of the base shell 100. A shift fork 600 structure adapted to slide the slide rod 501 is provided inside the base shell 100. The shift fork 600 structure is linked with the unlocking dial 302.

[0044] Specifically, the slide rod 501 passes through the mounting base 502 to achieve a sliding fit with the base shell 100, the pressure plate 503 is a disc surrounding the slide rod 501, and the first elastic element 504 is a compression spring, which is sleeved on the slide rod 501 and located between the pressure plate 503 and the mounting base 502.

[0045] In this embodiment, the lock has a secondary tongue 500 structure. The secondary tongue 500 structure facilitates automatic locking and limiting of the door when the door is closed. Under the action of the first elastic member 504, the secondary tongue 500 structure of the lock is kept in the state of extending out of the base shell 100. It can also be pulled into the base shell 100 by the sliding rod 501 driven by the fork 600, thereby enabling the secondary tongue 500 to complete the unlocking action.

[0046] In one embodiment, the fork 600 structure includes a rocker arm 601 rotatably connected to the base shell 100, a toggle end 3022 is provided on the outer peripheral side wall of the unlocking wheel 302, the toggle end 3022 is adapted to push the rocker arm 601 to deflect, and a sliding piece 5011 is provided on the slide rod 501 to slide in cooperation with the base shell 100, the rocker arm 601 abuts against the sliding piece 5011.

[0047] Specifically, the end furthest from the sliding piece 5011 is rotatably connected to the base shell 100 and sleeved on the unlocking dial 302. By being coaxial with the unlocking dial 302, it is not necessary to set a separate rotating shaft for the rocker arm 601, which further simplifies the internal structure of the base shell 100 and improves the compactness of the structure.

[0048] In this embodiment, by setting a toggle end 3022 on the unlocking dial 302 that is linked to the swing arm 601, when the unlocking dial 302 rotates, the swing arm 601 deflects synchronously and pushes the sliding piece 5011. The sliding piece 5011 pulls the sliding rod 501, thereby pulling the secondary tongue 500 into the base shell 100, realizing the unlocking action of the secondary tongue 500. At the same time, since the unlocking dial 302 is linked with the unlocking member 301 through the cooperation of the third gear 3021 and the fourth gear 3012, when the unlocking member 301 is driven to unlock the locking tongue 201, the secondary tongue 500 can move synchronously under the transmission of each structure, and cooperate with the locking tongue 201 and the first ground hook 202 and the second ground hook 203 to complete the unlocking action.

[0049] In one embodiment, the shift fork 600 structure further includes a transmission shift piece 602 rotatably connected to the base shell 100. A first shift rod 6021 and a second shift rod 6022 are fixedly provided on the periphery of the transmission shift piece 602. The first shift rod 6021 is adapted to push the swing arm 601 to deflect, and the second shift rod 6022 is adapted to push the shifting end 3022 to deflect.

[0050] In this embodiment, by setting a transmission paddle 602 and setting a first lever 6021 and a second lever 6022 on the circumferential sidewall of the transmission paddle 602, the transmission distance between the actuating end 3022 and the swing arm 601 is extended, improving the adaptability of the structure to different types of locks. At the same time, a flange suitable for the first lever 6021 to push is set on the swing arm 601. By adjusting the position of the flange, the position of the first lever 6021 abutting against the swing arm 601 can be adjusted, thereby adjusting the length of the first lever 6021 and controlling the length ratio between the first lever 6021 and the second lever 6022. This facilitates the use of the lever principle to reduce the rotational resistance of the unlocking wheel 302, further improving the smoothness of the structural movement.

[0051] In one embodiment, the base shell 100 is provided with an arc-shaped mounting plate 101, and the arc-shaped mounting plate 101 is coaxially provided with an arc-shaped slide rail 1011 extending in an arc shape. The unlocking component 301 is an arc-shaped slider that cooperates with the fan-shaped slide rail, and the fourth gear 3012 is a fan-shaped gear.

[0052] In this embodiment, by setting an arc-shaped mounting plate 101 and making the unlocking member 301 cooperate with the arc-shaped slide rail 1011 on the arc-shaped mounting plate 101 to realize the movement of the unlocking member 301 along the arc trajectory, and configuring the fourth gear 3012 as a sector gear, compared with directly using a rotating shaft, rotating wheel or gear as the unlocking member 301, the space inside the base shell 100 is saved, making the internal structure of the lock body more compact.

[0053] In one embodiment, the base shell 100 is rotatably connected to a drive column 102 coaxially arranged with the arc-shaped slide rail 1011. The peripheral sidewall of the drive column 102 is provided with a drive block 1021 suitable for pushing the unlocking member 301 to slide along the arc-shaped slide rail 1011. The drive column 102 is suitable for being driven by the lock cylinder of the lock, or the drive column 102 is suitable for being driven by the unlocking motor.

[0054] In this embodiment, by setting a drive column 102 and pushing the unlocking dial 302 by the drive block 1021 on the drive column 102, an idle stroke is provided for the rotation of the lock cylinder or the unlocking motor, thereby meeting the unlocking action requirements of the lock cylinder or the unlocking motor.

[0055] In one embodiment, the unlocking member 301 has a first limit position and a second limit position within the arc-shaped slide rail 1011. When the unlocking member 301 is in the first limit position, the locking tongue 201 is in the locked position. When the unlocking member 301 is in the second limit position, the locking tongue 201 is in the unlocked position. The base shell 100 is provided with a second elastic member 103, which is adapted to limit the unlocking member 301 in the first limit position or the second elastic member 103 is adapted to limit the unlocking member 301 in the second limit position.

[0056] In this embodiment, an elastic force is applied to the unlocking member 301 by an elastic member. When the unlocking member 301 is in the first limit position or the second limit position, the elastic force of the elastic member maintains the unlocking member 301 in the state of the first limit position or the second limit position, thereby improving the stability of the lock in the unlocked state and the locked state, and thus improving the stability of the lock function.

[0057] In one embodiment, the second elastic element 103 is a torsion spring, with one end of the torsion spring fixedly connected and the other end fixedly connected to the unlocking element 301. The end of the torsion spring fixedly connected to the base shell 100 is located on one side of the arc-shaped mounting plate 101 and is positioned opposite to the middle of the arc-shaped slide rail 1011.

[0058] In this embodiment, a torsion spring is selected as the elastic element. One end of the torsion spring is located on one side of the arc-shaped mounting plate 101. When the unlocking member 301 moves to the middle position between the first limit position and the second limit position, the torsion spring is compressed. Thus, when the unlocking member 301 moves to the first limit position or the second limit position, the elastic force of the torsion spring is released, which helps to push the unlocking member 301 to move to the first limit position or the second limit position.

[0059] According to an embodiment of the present invention, another aspect provides a security door, including a door body; the aforementioned lock body structure, with a base shell 100 mounted on the door body.

[0060] In this embodiment, by adopting the above-described lock body structure, the movement resistance of each structure within the lock body is low during the unlocking process of the security door, making it less prone to jamming, thus making the user's operation easier and smoother. At the same time, the lock body structure is compact and small in size, meeting the needs of security doors of different sizes.

[0061] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A lock body structure, characterized in that, include: Base shell (100); The locking structure (200) includes a locking tongue (201), a first ground hook (202), and a second ground hook (203). The locking tongue (201) is provided with a main tongue push plate (2011) and has a locked position and an unlocked position. The main tongue push plate (2011) slides with the base shell (100) so that the locking tongue (201) can switch between the locked position and the unlocked position. The main tongue push plate (2011) is provided with a toggle groove (20111). The first ground hook (202) and the second ground hook (203) slide with the base shell (100) in the same direction and face opposite directions. The main tongue push plate (2011), the first ground hook (202), and the second ground hook (203) are all provided with racks. The drive structure (300) includes an unlocking component (301) disposed on the base shell (100) and moving along an arc trajectory. The unlocking component (301) is provided with a toggle block (3011) adapted to the toggle groove (20111), which is suitable for driving the lock tongue (201) to switch between the locked position and the unlocked position. The drive structure (300) also includes an unlocking dial (302) that rotates with the base shell (100). The transmission structure (400) includes a first gear (401) and a second gear (402) coaxially arranged and fixedly connected. The first gear (401) is in transmission engagement with the rack on the main tongue push plate (2011). The second gear (402) is in transmission engagement with the rack of the first hook (202) and the rack of the second hook (203), respectively. The transmission directions of the second gear (402) to the first hook (202) and the second hook (203) are opposite. It also includes a secondary tongue (500), on which a slide rod (501) is provided. A fork (600) structure suitable for sliding the slide rod (501) is provided inside the base shell (100). The fork (600) structure includes a rocker arm (601) rotatably connected to the base shell (100). A toggle end (3022) is provided on the outer peripheral sidewall of the unlocking wheel (302). The toggle end (3022) is suitable for pushing the rocker arm (601) to deflect. The slide rod (501) is provided with a connection to the base shell. (100) A sliding plate (5011) with sliding fit, wherein the rocker arm (601) abuts against the sliding plate (5011); the fork (600) structure further includes a transmission plate (602) rotatably connected to the base shell (100), wherein a first lever (6021) and a second lever (6022) are fixedly provided on the periphery of the transmission plate (602), wherein the first lever (6021) is adapted to push the rocker arm (601) to deflect, and the second lever (6022) is adapted to push the actuating end (3022) to deflect.

2. The lock body structure according to claim 1, characterized in that, The unlocking dial (302) is provided with a third gear (3021), and the unlocking component (301) is provided with a fourth gear (3012). The third gear (3021) and the fourth gear (3012) are in a transmission cooperation.

3. The lock body structure according to claim 2, characterized in that, The slide bar (501) is slidably engaged with the base shell (100). The base shell (100) is provided with a mounting seat (502). The slide bar (501) is provided with a pressure plate (503). A first elastic element (504) is provided between the pressure plate (503) and the mounting seat (502). The first elastic element (504) is adapted to push the auxiliary tongue (500) to the outside of the base shell (100). The shift fork (600) structure is linked with the unlocking dial (302).

4. The lock body structure according to claim 2, characterized in that, The base shell (100) is provided with an arc-shaped mounting plate (101), and the arc-shaped mounting plate (101) is coaxially provided with an arc-shaped slide rail (1011) extending in an arc shape. The unlocking component (301) is an arc-shaped slider that cooperates with the arc-shaped slide rail, and the fourth gear (3012) is a sector gear.

5. The lock body structure according to claim 4, characterized in that, The base shell (100) is rotatably connected to a drive column (102) coaxially arranged with the arc-shaped slide rail (1011). The drive column (102) has a drive block (1021) on its peripheral sidewall, which is suitable for pushing the unlocking member (301) to slide along the arc-shaped slide rail (1011). The drive column (102) is suitable for being driven by the lock cylinder of the lock, or the drive column (102) is suitable for being driven by the unlocking motor.

6. The lock body structure according to claim 4, characterized in that, The unlocking member (301) has a first limit position and a second limit position within the arc-shaped slide rail (1011). When the unlocking member (301) is in the first limit position, the locking tongue (201) is in the locked position. When the unlocking member (301) is in the second limit position, the locking tongue (201) is in the unlocked position. A second elastic member (103) is provided within the base shell (100). The second elastic member (103) is adapted to limit the unlocking member (301) located in the first limit position, or the second elastic member (103) is adapted to limit the unlocking member (301) located in the second limit position.

7. The lock body structure according to claim 6, characterized in that, The second elastic element (103) is a torsion spring. One end of the torsion spring is fixedly connected to the unlocking element (301), and the other end is fixedly connected to the base shell (100). The end of the torsion spring that is fixedly connected to the base shell (100) is located on one side of the arc-shaped mounting plate (101) and is opposite to the middle of the arc-shaped slide rail (1011).

8. A security door, characterized in that, include: Door body; The lock body structure according to any one of claims 1 to 7, wherein the base shell (100) is mounted on the door body.

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