Lock cylinder locking structure of plane lock

Abstract

The utility model relates to a plane lock cylinder locking structure which is characterized in that a cylindrical button is configured to slide in a lock cylinder seat, a lock cylinder is configured in the cylindrical button and is in linkage fit with the cylindrical button in the sliding direction, a lock groove in the lock cylinder seat is correspondingly matched with a lock head at the bottom end of the lock head, and the lock head comprises a lock head body which is in the shape of an elliptical runway and is provided with a conical top. A plate-shaped locking side protruding block is arranged in the middle of the side, perpendicular to the straight face of the lock head body, of the lock head body in a protruding and extending mode, an unlocking step concave part lower than the top end of the plate-shaped locking side protruding block is arranged at the position, located on one side of the plate-shaped locking side protruding block, of the top of the lock head body, and a locking boss corresponding to one side of the arc-shaped side wall of a main groove cavity is arranged on the bottom wall of the main groove cavity of the lock groove in a protruding mode. A receding notch is formed in one side of the straight face wall of the main groove cavity, when the lock cylinder is located at the locking position, the plate-shaped locking side protruding block and the locking boss are correspondingly stopped, and when the lock cylinder is located at the unlocking position, the plate-shaped locking side protruding block corresponds to the receding notch, and the unlocking step concave part corresponds to the locking boss. The locking mechanism has the advantage of reliable locking fit.

Description

Technical Field

[0001] The utility model relates to a lock, more specifically to a lock core locking structure of a plane lock. Background Art

[0002] The lock core of an existing flat lock is assembled on a cylindrical button for unlocking. The lock core can be pressed along with the cylindrical button. A lock groove corresponding to the lock head of the lock core is provided in a lock core seat on the handle for installing the lock core. When the lock core rotates, due to unreasonable design of the matching structure between the lock head and the lock groove of the lock core, due to tolerances in component processing and cumulative tolerances between multiple components, there is a risk that the cylindrical button can still be pressed when the lock core is in the locked position, thereby causing unreliable locking of the lock. Summary of the invention

[0003] The purpose of the utility model invention is to overcome the defects of the prior art and provide a flat lock core locking structure with reliable locking fit.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A planar lock cylinder locking structure comprises a lock cylinder seat located on a handle, a cylindrical button is arranged in the lock cylinder seat, the cylindrical button is matched with a return spring, the cylindrical button is configured to slide in the lock cylinder seat, a lock cylinder is arranged in the cylindrical button, a lock head is protruded at the bottom end of the lock cylinder, a lock groove corresponding to the lock head is arranged at the bottom of the inner cavity of the lock cylinder seat, the lock cylinder and the cylindrical button are linked and connected along the sliding direction of the cylindrical button, the lock cylinder is rotatably arranged in the cylindrical button, and the lock cylinder has a locking position and an unlocking position along the rotation direction, characterized in that: the lock head comprises a lock head body in an elliptical runway shape and having a conical top, a plate-shaped locking side protrusion is formed on the lock head body and protrudes and extends in the direction of the straight face of the lock head body, and the plate-shaped locking side protrusion is formed on the lock head body and protrudes and extends perpendicular to the side of the lock head body. The locking side protrusion corresponds to the middle position of the straight face side of the lock body, and the top of the lock body is located on one side of the plate-shaped locking side protrusion and is provided with an unlocking step recess formed lower than the top of the plate-shaped locking side protrusion. The lock groove has a main groove cavity adapted to the shape of the lock body, and the bottom wall of the main groove cavity protrudes with a locking boss, and the locking boss corresponds to one side of the arc-shaped side wall of the main groove cavity, and an avoidance notch is provided on the straight face wall side of the main groove cavity. When the lock core is in the locked position, the plate-shaped locking side protrusion and the locking boss correspond to the stopper to constitute the lock core to be locked along the sliding direction. When the lock core is in the unlocked position, the plate-shaped locking side protrusion corresponds to the avoidance notch position and the unlocking step recess corresponds to the locking boss position to constitute the lock core to be unlocked along the sliding direction.

[0006] Preferably, the lock core seat includes an upper seat body formed on the handle and a bottom plate covering the bottom of the upper seat body, the lock groove is formed on the bottom plate, the upper seat body includes a base on the handle, two oppositely arranged side plate parts are formed on the base, the ends of the two side plate parts are provided with positioning recesses, the two side plate parts are provided with pin shaft holes in the transverse direction, the bottom plate is provided with lugs and latch pin through holes, the lugs are inserted into the positioning recesses and supported on the ends of the side plate parts, the latch pin through holes on the bottom plate correspond to the positions of the pin shaft holes on the side plate parts and are inserted with transverse pins.

[0007] By adopting the above technical scheme, when the lock core is in the locked position, the lock core is locked, that is, the locking cylindrical button is reached and the cylindrical button cannot be pressed. In this state, the plate-shaped locking side protrusion of the lock head is stopped by the locking boss, thereby realizing the locking of the lock core, that is, the locking of the cylindrical button; the lock core is rotated 90°, the plate-shaped locking side protrusion of the lock head withdraws from the corresponding position of the locking boss and enters the avoidance notch position, and at the same time, the unlocking step recess corresponds to the locking boss position, the lock groove forms an avoidance for the lock head, and the lock core can be pressed, that is, the cylindrical button can be pressed to perform the unlocking action; it can ensure that when the lock core is locked, the stop area of ​​the lock groove to the lock head stopper, thereby ensuring the reliable locking of the lock core and preventing the limit locking function from failing due to tolerance.

[0008] The utility model is further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a three-dimensional diagram of the locking structure of the flat lock cylinder of the utility model;

[0010] Figure 2 This is a structural schematic diagram of the locking structure of the flat lock cylinder of the utility model;

[0011] Figure 3 This is an exploded view of the locking structure of the flat lock cylinder of the utility model;

[0012] Figure 4 This is a structural schematic diagram of the lock core part of the utility model;

[0013] Figure 5 It is a structural schematic diagram of the lock slot part of the utility model;

[0014] Figure 6 This is a schematic diagram of the matching structure of the lock core and the lock slot of the utility model in a locked state;

[0015] Figure 7 It is a schematic diagram of the matching structure of the lock core and the lock slot of the utility model in the unlocked state. DETAILED DESCRIPTION

[0016] See attached Figures 1 to 7The utility model discloses a planar lock cylinder locking structure, including a lock cylinder seat located on a handle 1, a cylindrical button 2 is provided in the lock cylinder seat, the cylindrical button 2 is matched with a reset spring 3, the cylindrical button 2 is configured to slide in the lock cylinder seat, the cylindrical button 2 is guided by a corresponding positioning guide structure, a lock cylinder 4 is provided in the cylindrical button 2, a lock head 41 is protruded at the bottom end of the lock cylinder 4, a lock groove 11 corresponding to the lock head 41 is provided at the bottom of the inner cavity of the lock cylinder seat, the lock cylinder 4 is linked and connected with the cylindrical button 2 along the sliding direction of the cylindrical button 2, the lock cylinder 4 can be rotatably arranged in the cylindrical button 2, the lock cylinder 4 has a locking position and an unlocking position along the rotation direction, the lock head 41 includes an elliptical runway shape and A lock body 411 having a conical top 4111, a plate-like locking side protrusion 412 is formed on the lock body 411 and protrudes and extends perpendicularly to the straight side of the lock body 411, the plate-like locking side protrusion 412 corresponds to the middle position of the straight side of the lock body 411, the top of the lock body 411 is located on one side of the plate-like locking side protrusion 412, and an unlocking step recess 4112 is provided below the top of the plate-like locking side protrusion 412, the lock groove 11 has a main groove cavity adapted to the shape of the lock body 411, the bottom wall of the main groove cavity protrudes with a locking boss 111, the locking boss 111 corresponds to one side of the arc-shaped side wall of the main groove cavity 110, and an avoidance notch 112 is provided on the straight wall side of the main groove cavity 110, such as Figure 6 As shown, when the lock core 4 is in the locked position, the plate-shaped locking side protrusion 412 and the locking boss 111 correspond to the stopper to form the lock core 4 locked along the sliding direction. The plate-shaped locking side protrusion 412 protruding laterally and the locking boss 111 in the main groove cavity 110 are used to stop and achieve locking, which can ensure the size design of the stopper and ensure reliable locking; rotate the lock core 90°, as shown Figure 7 As shown, the lock core 4 is switched to the unlocking position, at which time, the plate-shaped locking side protrusion 412 corresponds to the position of the avoidance notch 112 and the unlocking step recess 4112 corresponds to the position of the locking boss 111 to constitute the lock core 4 being unlocked along the sliding direction.

[0017] Typically, the lock core seat comprises an upper seat body 1-1 formed on the handle 1 and a bottom plate 1-2 covering the bottom of the upper seat body 1-1, and a lock slot 11 is formed on the bottom plate 1-2; to ensure that the lock slot 11 and the lock head 41 of the lock core 4 are in a reliable position, the structure is optimized to ensure that the bottom plate 1-2 is accurately and reliably installed on the upper seat body 1-1, specifically: the upper seat body 1-1 comprises a base 1-11 on the handle 1, and two side plate portions arranged oppositely are formed on the base 1-11. 1-12, the ends 1-12 of the two side panels are provided with positioning notches 1-121, and the two side panels 1-12 are provided with pin holes 1-122 in the horizontal direction. The bottom plate 1-2 is provided with lugs 1-21 and pin holes 1-22. The lugs 1-21 are inserted into the positioning notches 1-121 and supported at the ends of the side panels 1-12. The pin holes 1-22 on the bottom plate 1-2 correspond to the pin holes 1-122 on the side panels 1-12 and are inserted with transverse pins 1-3. The lugs 1-21 of the bottom plate are positioned in the positioning notches, and after positioning, the bottom plate is installed and fixed by transverse pins arranged transversely. The transverse pins can be fixed by riveting at the ends; compared with the traditional method of screwing in and fixing with screws by using screw columns in conjunction with screw holes on the bottom plate (using 4 screws for connection, the gap between the screw installation holes and the side of the screws will affect the installation position of the bottom plate.), the installation position is more accurate.

Claims

1. A planar lock cylinder locking structure, comprising a lock cylinder seat located on a handle, a cylindrical button provided in the lock cylinder seat, the cylindrical button cooperates with a return spring, the cylindrical button is configured to slide in the lock cylinder seat, a lock cylinder is configured in the cylindrical button, a lock head is protruded at the bottom end of the lock cylinder, a lock groove corresponding to the lock head is provided at the bottom of the inner cavity of the lock cylinder seat, the lock cylinder and the cylindrical button are linked and connected along the sliding direction of the cylindrical button, the lock cylinder is rotatably arranged in the cylindrical button, and the lock cylinder has a locked position and an unlocked position along the rotation direction, characterized in that: The lock head comprises a lock head body in the shape of an elliptical runway and having a conical top, a plate-shaped locking side protrusion is formed on the lock head body and protrudes and extends in the direction of the straight face side of the lock head body, the plate-shaped locking side protrusion corresponds to the middle position of the straight face side of the lock head body, the top of the lock head body is located at one side of the plate-shaped locking side protrusion and is provided with an unlocking step recess formed lower than the top of the plate-shaped locking side protrusion. The lock groove has a main groove cavity adapted to the shape of the lock head body, the bottom wall of the main groove cavity protrudes with a locking boss, the locking boss corresponds to one side of the arc-shaped side wall of the main groove cavity, and an avoidance notch is provided on one side of the straight face wall of the main groove cavity. When the lock core is in the locked position, the plate-shaped locking side protrusion and the locking boss correspond to stop to form that the lock core is locked in the sliding direction. When the lock core is in the unlocked position, the plate-shaped locking side protrusion corresponds to the avoidance notch position and the unlocking step recess corresponds to the locking boss position to form that the lock core is unlocked in the sliding direction.

2. According to claim 1, the locking structure of the flat lock cylinder is characterized in that: The lock core seat includes an upper seat body formed on the handle and a bottom plate covering the bottom of the upper seat body, a lock groove is formed on the bottom plate, the upper seat body includes a base on the handle, two side plate parts arranged oppositely are formed on the base, positioning recesses are provided at the ends of the two side plate parts, and pin shaft holes are provided in the transverse direction of the two side plate parts, a lug and a pin through hole are provided on the bottom plate, the lug is inserted into the positioning recess and supported on the end of the side plate part, and the pin through hole on the bottom plate corresponds to the position of the pin shaft hole on the side plate part and is inserted with a transverse pin.

Images