CN113700381A

CN113700381A - Lock core structure and door lock

Info

Publication number: CN113700381A
Application number: CN202110960074.XA
Authority: CN
Inventors: 黄东涛
Original assignee: Guangdong Mingmen Locks Industry Co Ltd
Current assignee: Guangdong Mingmen Locks Industry Co Ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2021-11-26
Anticipated expiration: 2041-08-20
Also published as: CN113700381B

Abstract

The invention relates to the technical field of locks and discloses a lock core structure which comprises a lock tongue assembly, an inner shifting peach, an outer shifting peach, a middle shifting peach, a return spring, a locking piece and a locking spring, wherein the lock tongue assembly, the inner shifting peach, the outer shifting peach, the middle shifting peach, the return spring, the locking piece and the locking spring are arranged in a door lock shell. Interior thumb peach and outer thumb peach can drive the spring bolt subassembly and slide in the casing, and reset spring drives the spring bolt subassembly and accomplishes and reset, and the lock plate can restrict the rotation of outer thumb peach and realize the counter-lock, and well thumb peach drives the lock plate horizontal migration and realizes the counter-lock and relieve the counter-lock. The lock core structure can release the back locking by rotating the inner shifting peach under the back locking state, and has the advantage of convenient and fast unlocking; when the door is closed, the bolt assembly moves towards the inside of the shell, and the back locking can be released, so that the function that the back locking cannot be performed when no person is on one side in the door is realized, and the door has high safety. In addition, an emergency unlocking structure is added on the basis of the lock core structure, the back locking can be released outside the door in an emergency state, and meanwhile, the back locking cannot be realized on one side outside the door, so that the safety is further improved.

Description

Lock core structure and door lock

Technical Field

The invention relates to the technical field of locks, in particular to a lock cylinder structure and a door lock comprising the same.

Background

For the door lock of indoor rooms, such as the door lock of a bedroom, a bathroom, a children room or an old people room, because the door lock of entering the house has a strong security protection function, the requirement of privacy protection is mainly considered when the door lock of the house is designed, and correspondingly, the door lock can cancel the function of unlocking the door lock through a key outdoors and is provided with an emergency switch structure. However, the following problems exist in the use of the common door lock: 1. if the back locking knob is operated by mistake indoors and the door is out, the door is locked by back locking, and people outdoors are difficult to open the door; 2. after the indoor lock is locked, the unlocking knob is firstly needed to be unlocked when the door is opened, then the handle is rotated to open the door, the unlocking step is not convenient enough, and a user is difficult to quickly unlock the door from the indoor space in an emergency state.

Disclosure of Invention

The invention is made to solve the technical problems, and aims to provide a lock core structure and a door lock comprising the same, which have the advantage of convenient unlocking, and can not lock the door lock when the door is closed without people indoors.

In order to achieve the above object, in one aspect, the present invention provides a lock cylinder structure including, disposed in a door lock housing: the lock tongue assembly is arranged in the shell in a sliding mode and can slide along the telescopic direction of the lock tongue; the outer periphery of the inner shifting peach is provided with a first unlocking boss, the first unlocking boss is abutted against the spring bolt assembly, and when the inner shifting peach rotates, the first unlocking boss can drive the spring bolt assembly to slide towards the inside of the shell; the outer shifting peach is provided with a second unlocking boss at the periphery, the second unlocking boss is abutted against the spring bolt assembly, and the second unlocking boss drives the spring bolt assembly to slide towards the inside of the shell when the outer shifting peach rotates; the middle shifting peach is arranged between the inner shifting peach and the outer shifting peach, an unlocking baffle extending to one side of the inner shifting peach and a limiting baffle extending to one side of the outer shifting peach are arranged on the periphery of the middle shifting peach, and the unlocking baffle is positioned on the motion track of the bolt assembly when the door lock is reversely locked; a return spring applying an urging force toward a latch bolt side to the latch bolt assembly; a stopping part surrounding the periphery of the outer shifting peach or the middle shifting peach is arranged at one end of the locking piece, a limiting boss opposite to the limiting baffle is arranged at one side of the locking piece, and limiting grooves gradually sunken into the locking piece are arranged at two sides of the limiting boss; the locking spring is arranged between the locking piece and the inner wall of the shell, and applies acting force towards one side of the outer shifting peach to the locking piece; when the limiting baffle abuts against the limiting boss, the stopping part is positioned on the periphery of the middle shifting peach; when the limiting baffle is positioned in the limiting groove, the locking sheet slides towards one side of the outer shifting peach under the action force of the locking spring, so that the stopping part is positioned at the periphery of the outer shifting peach.

Preferably, the inner peach-shifting device comprises two first unlocking bosses which are arranged up and down; the outer shifting peach comprises two second unlocking bosses which are arranged up and down; the spring bolt subassembly includes spring bolt and spring bolt drive frame, the spring bolt drive frame slides and sets up in the casing, the one end of spring bolt drive frame is equipped with the butt and is in keeping away from of first unblock boss and second unblock boss the unblock ka tai of the side of spring bolt.

Preferably, the latch bolt is rotatably connected with the driving frame.

Preferably, the other end of the locking piece is provided with a rotating shaft; still be provided with the locking plate base in the casing, be provided with the holding on the locking plate base the vertical shaft groove of rotation axis.

Preferably, the upper end and the lower end of the base of the locking plate are arranged on the sliding track of the lock tongue assembly to limit the sliding distance of the lock tongue assembly to the shell.

Preferably, the locking piece base is provided with a mounting hole for the locking spring to pass through; after the locking spring penetrates through the mounting hole, two ends of the locking spring are respectively abutted against the locking sheet and the shell.

In order to achieve the above object, in another aspect, the present invention provides a lock cylinder structure including: the lock cylinder structure as described above; an inner handle rotating synchronously with the inner peach; an outer handle rotating synchronously with the outer peach; the back locking structure synchronously rotates with the middle shifting peach; the emergency unlocking structure connected with the middle shifting peach can drive the middle shifting peach to rotate when the door lock is in a back locking state.

Preferably, the back locking structure includes: the pressing rotary cylinder is coaxially arranged in the inner handle, can only rotate around the axial direction of the inner handle, one end of the pressing rotary cylinder is connected with the middle shifting peach and synchronously rotates with the middle shifting peach, and the other end of the pressing rotary cylinder is provided with two spiral surfaces along the cylinder wall; and the back locking button is arranged at the end part of the inner handle in a sliding manner, and one end of the back locking button is provided with a back locking boss which is abutted against the spiral surface.

Preferably, the emergency unlocking structure includes: one end of the state mark is of a cylindrical structure coaxially arranged in the outer handle and is synchronously and rotatably connected with the middle shifting peach, and a pin hole is formed in the cylinder wall of the state mark along the circumferential direction; the emergency knob is coaxially arranged at the end part of the outer handle, one end of the emergency knob is exposed on the surface of the outer handle, a rotating groove is formed in the end surface of the emergency knob, and the other end of the emergency knob is embedded into the state mark; the torsional pin is fixedly arranged on the emergency knob along the radial direction, when the door lock is in a non-locking state, the end part of the torsional pin is positioned in the middle of the pin hole, and when the door lock is in a locking state, the end part of the torsional pin is positioned at the end part of the pin hole; and the limiting structure is arranged on the inner wall of the outer handle and used for limiting the rotation range of the torsion pin.

Preferably, the limiting structure is a limiting groove which is arranged on the inner wall of the outer handle and opposite to the pin hole, and the length of the limiting groove is equal to that of the pin hole.

As can be seen from the above description and practice, the lock cylinder structure of the present invention has the following advantages:

1. the lock core structure is provided with an inner shifting peach, an outer shifting peach, a middle shifting peach, a locking piece, a spring bolt assembly, a reset spring and a locking spring, wherein the inner shifting peach and the outer shifting peach can drive the spring bolt assembly to slide in a shell, the reset spring drives the spring bolt assembly to complete resetting, the locking piece can limit the rotation of the outer shifting peach to realize counter locking, and the middle shifting peach drives the locking piece to horizontally move to realize counter locking and release counter locking. The lock core structure can release the back locking by rotating the inner shifting peach under the back locking state, and has the advantage of convenient and fast unlocking; when the door is closed, the bolt assembly moves towards the inside of the shell, and the back locking can be released, so that the function that the back locking cannot be performed when no person is on one side in the door is realized, and the door has high safety.

2. The lock core structure of the invention has the advantages that the lock tongue is rotationally connected with the lock tongue driving frame, and the lock core structure can be suitable for left-opening and right-opening doors; the lock cylinder structure is characterized in that the lock cylinder body is provided with a lock sheet base, the lock sheet base is arranged in the shell body, the movable range of the lock sheet can be limited, the lock sheet is prevented from being separated from a preset position, and the service life of the lock cylinder structure is prolonged.

In addition, the invention also discloses a door lock comprising the lock core structure, wherein an inner handle, an outer handle, a back locking button and an emergency unlocking structure are additionally arranged on the basis of the lock core structure, the back locking of the door lock can be released outside the door in an emergency state, and meanwhile, the back locking cannot be realized on one side outside the door, so that the safety is further improved.

Drawings

Fig. 1 is a schematic internal structure diagram of a lock cylinder structure according to an embodiment of the present invention at a first viewing angle.

Fig. 2 is an exploded view of a lock cylinder structure according to an embodiment of the present invention from a first perspective.

Fig. 3 is a schematic internal structure diagram of a lock cylinder structure according to an embodiment of the present invention at a second viewing angle.

Fig. 4 is an exploded view of a lock cylinder structure according to an embodiment of the present invention from a second perspective.

Fig. 5a and 5b are schematic structural views of a middle peach according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of an inner peach according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a locking plate according to an embodiment of the present invention.

Fig. 8 is a schematic structural view of a door lock according to a second embodiment of the present invention.

Fig. 9a, 9b, and 9c are schematic internal structural views of a door lock according to a second embodiment of the present invention.

The reference numbers in the figures are:

1. a shell body 11, a sliding chute 12 and a fixing plate;

2. the locking bolt assembly comprises a locking bolt assembly 21, a sliding block 22, a locking bolt 23, a locking bolt driving frame 24 and an unlocking clamping table;

3. an inner shifting peach 31 and a first unlocking boss;

4. an outer shifting peach 41 and a second unlocking boss;

5. a middle shifting peach 51, an unlocking baffle 52 and a limiting baffle;

6. the locking device comprises a locking piece 61, a stopping part 62, a limiting boss 63, a limiting groove 64 and a rotating shaft;

7. a locking spring;

8. a return spring;

9. a locking piece base 91, a shaft groove 92 and a mounting hole;

20. the emergency unlocking device comprises an inner handle, 30 parts of an outer handle, 40 parts of an inverse locking structure and 50 parts of an emergency unlocking structure;

401. a press rotary cylinder 402, a back locking button 403, a spiral surface 404 and a back locking boss;

501. the state mark 502, the emergency knob 503, the pin hole 504, the twist pin 505 and the limit structure.

Detailed Description

Exemplary embodiments will now be described more fully with reference to the accompanying drawings. The exemplary embodiments, however, may be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted. In the present disclosure, the terms "include", "arrange", "disposed" and "disposed" are used to mean open-ended inclusion, and mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc.; the terms "first," "second," and the like are used merely as labels, and are not limiting as to the number or order of their objects; the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

Fig. 1 is a schematic internal structural view of a lock cylinder structure referred to in this embodiment from a first perspective, showing the connection relationship of internal components of the lock cylinder structure in this embodiment; fig. 2 is an exploded schematic view of the lock cylinder structure in the first view, showing the detailed structure and connection relationship of the components of the lock cylinder structure in the first view, wherein the structure of the housing is removed. Fig. 3 is a schematic internal structural view of the lock cylinder structure referred to in this embodiment from a second perspective, showing the connection relationship of the internal components of the lock cylinder structure in this embodiment; fig. 4 is an exploded schematic view of the lock cylinder structure in the second view, showing the detailed structure and connection relationship of the components of the lock cylinder structure in the second view, with the structure of the housing removed. Fig. 5a and 5b are schematic structural views of the middle peach according to the embodiment. Fig. 6 is a schematic structural diagram of the inner peach according to this embodiment. Fig. 7 is a schematic structural view of the lock plate according to this embodiment.

Referring to fig. 1 to 7, in this embodiment, the lock cylinder structure includes a bolt assembly 2, an inner dial 3, an outer dial 4, a middle dial 5, a lock plate 6, a lock spring 7 and a return spring 8, which are disposed in a housing 1 of a door lock. The housing 1 may be formed by two half-housings which are fastened together, and the middle portion of the housing has a cavity for accommodating the above-mentioned components. One end surface of the shell 1 is provided with a bolt hole for the bolt to stretch.

The bolt assembly 2 is slidably disposed in the housing 1 and can slide along the extension direction (X-axis direction in the drawing) of the bolt. Specifically, the inner wall of the housing 1 is provided with a sliding groove 11 along the X-axis direction, the latch bolt assembly 2 is provided with a sliding block 21 embedded in the sliding groove, and the latch bolt assembly 2 can slide in the sliding groove 11 under the shifting of the latch bolt or the inner shift block 3 and the outer shift block 4. In this embodiment, the latch bolt assembly 2 includes a latch bolt 22 and a latch bolt driving frame 23, and the slider 21 is provided on the latch bolt driving frame 23. The lock tongue 22 is arranged at one end of the lock tongue driving frame 23, and along with the sliding of the lock tongue driving frame 23 in the casing 1, the lock tongue 22 can extend out of the casing 1 or retract into the casing 1. In addition, locking bolt 22 is rotatably connected to locking bolt driving frame 23, and the inclined surface of locking bolt 22 can be rotated when mounting, so that the door can be opened left or right.

In this embodiment, interior thumb peach 3 is the same with the structural style of outer thumb peach 4, all sets up in casing 1 and can rotate around Y axle direction in the drawing, and interior thumb peach 3 corresponds the handle of one side in the door, and outer thumb peach 4 corresponds the handle of one side outside the door. The periphery of the inner peach-shifting 3 is provided with a first unlocking boss 31, and the periphery of the outer peach-shifting 4 is provided with a second unlocking boss 41. Wherein, first unblock boss 31 and second unblock boss 41 butt on bolt subassembly 2, when interior thumb peach 3 or outer thumb peach 4 rotates, correspondingly, first unblock boss 31 or second unblock boss 41 can drive bolt subassembly 2 and slide to casing 1.

Referring to fig. 6, a structural form of the inner peach-shifting block 3 is shown, the inner peach-shifting block 3 is provided with two first unlocking bosses 31 at the upper and lower parts on the periphery thereof, and referring to fig. 2 and 4, the outer peach-shifting block 4 is also provided with two second unlocking bosses 41 at the upper and lower parts on the periphery thereof. Correspondingly, one end of the lock tongue driving frame 23, which is far away from the lock tongue 22, is provided with an unlocking clamping table 24, and the unlocking clamping table 24 abuts against the side faces, far away from the lock tongue 22, of the first unlocking boss 31 and the second unlocking boss 41. When the inner shift peach 3 or the outer shift peach 4 is rotated clockwise or counterclockwise, the first unlocking boss 31 or the second unlocking boss 41 can push the lock tongue driving frame 23 into the shell 1, and then the lock tongue 22 is driven to be contracted into the shell 1, so that unlocking is completed.

The bolt assembly 2, the inner shift peach 3 and the outer shift peach 4 are in a structural form and a connection relation, the bolt assembly 2 is driven to slide towards the inside of the shell 1 through the inner shift peach 3 and the outer shift peach 4, in other embodiments, the existing structure can be adopted to replace the structural form, and the functions can be achieved.

Referring to fig. 2, 4, 5a and 5b, the middle picks 5 are disposed between the inner picks 3 and the outer picks 4, and are also rotatable about the Y-axis in the drawings. The periphery of the middle shifting peach 5 is provided with an unlocking baffle 51 extending towards one side of the inner shifting peach 3 and a limit baffle 52 extending towards one side of the outer shifting peach 4. When the door lock is unlocked, the end of the unlocking shutter 51 is on the movement locus of the latch bolt assembly 2. Specifically, when the door lock is locked reversely, one end of the unlocking baffle 51 is located on one side of the unlocking block 24 far away from the bolt 22, and at this time, if the bolt driving frame 23 slides towards the inside of the housing 1 (in the negative direction of the X axis in the drawing), the unlocking block 24 can push the unlocking baffle 51 to move towards one side of the negative direction of the X axis in the drawing, and as the middle shifting block 5 is rotatably arranged in the housing 1, the middle shifting block 5 can rotate around the Y axis correspondingly. In other words, when the latch bolt assembly 2 slides into the housing 1, the middle shift peach 5 can be driven to rotate.

Referring to fig. 1 to 4, the locking plate 6 is disposed in the housing 1, and a stop portion 61 surrounding the outer rim 4 or the middle rim 5 is disposed at an end of the locking plate 22, in other words, the stop portion 61 is movable around the outer rim 4 or the middle rim 5. When the stopping portion 61 surrounds the outer periphery of the outer dial 4, the end portion thereof is located on the motion track of the second unlocking boss 41, and at this time, the rotation of the outer dial 4 is limited, and accordingly, the bolt assembly 2 cannot be driven to move into the housing 1, and finally, the back locking of the door lock is realized (i.e., the outer dial cannot be rotated on the outer side of the door). When the stopping part 61 is positioned at the periphery of the middle shift peach 5, the rotation of the outer shift peach 4 and the middle shift peach 5 is not limited, namely, the back locking is released.

In addition, referring to fig. 7, a limiting boss 62 facing the limiting baffle 52 is disposed on one side of the locking plate 6 close to the outer dial 4, and limiting grooves 63 gradually recessed into the locking plate 6 are disposed on both sides of the limiting boss 62. The surface of the limit boss 62 and the surface of the limit groove 63 are smoothly transited to form a plane or a curved surface. When the limiting baffle plate 52 rotates along with the middle shifting peach 5, the limiting baffle plate can be respectively abutted against the surface of the limiting boss 62 or the limiting groove 63. In other words, when the position-limiting baffle 52 is located in the position-limiting groove 63, the middle shifting block 5 is rotated to make the position-limiting baffle 52 slide to the surface of the position-limiting boss 62 along the transition surface between the position-limiting groove 63 and the position-limiting boss 62. Meanwhile, when the limit baffle 52 abuts on the limit boss 62, the stop part 61 is located at the periphery of the middle peach 5 by being blocked by the limit baffle 52.

Referring to fig. 1 to 4, a locking plate base 9 is further disposed in the housing 1 for controlling the moving range of the locking plate 6 and the moving range of the locking tongue driving frame 23. The locking piece base 9 is provided with a shaft groove 91 at a side close to the outer picks 4, and correspondingly, a rotation shaft 64 is provided at an end of the locking piece 6. In this embodiment, the shaft groove 91 is vertically (Z-axis direction in the drawing), the rotating shaft 64 is disposed in the shaft groove 91, and the locking piece 6 can rotate around the rotating shaft, and the moving range of the stopper 61 is limited to the outer peripheries of the outer and

middle picks

4 and 5. In this embodiment, the locking piece base 9 and the shaft groove 91 thereon are provided to allow one end of the locking piece 6 to rotate only around the shaft, and the other end of the locking piece 6 to swing reciprocally, so that the locking piece 6 can be well fixed to move only within a predetermined range while controlling the movement range of the locking piece 6. In other embodiments, the shaft groove 91 may be a sliding groove along the Y-axis direction, and the locking plate 6 is slidably fitted in the sliding groove, so that the stop portion 61 can move on the outer circumference of the outer and

middle picks

4 and 5. In addition, the upper and lower tip of lock plate base 9 sets up on bolt assembly 2 is to the gliding orbit of casing 1 for the distance that restriction bolt assembly 2 slided to casing 1 prevents that bolt assembly 2 from to too big to the distance that casing 1 removed, leads to spring bolt 22 to break away from the bolt hole. Of course, the length of the sliding groove 11 can be controlled to control the moving range of the latch bolt assembly 2, and the detailed description is omitted here.

The lock spring 7 is provided between the lock plate 6 and the inner wall of the housing 1, and applies an urging force toward the side of the outward shift peach 4 to the lock plate 6. Therefore, when the limit baffle 52 is in the limit groove 63, the stop part 61 moves to the outer periphery of the outer dial 4 under the action of the locking spring 7, and the counter lock is formed. As shown in fig. 2, in this embodiment, the locking spring 7 is a spring in a compressed state, and is disposed on one side of the locking piece 6 close to the inner peach 3, and both ends of the locking spring respectively abut against the inner wall of the housing 1 and the side wall of the locking piece 6. Of course, the locking spring 7 can be arranged on one side of the locking piece 6 close to the outer shifting block 4, and the spring in a stretching state is selected, so that the acting force towards one side of the outer shifting block 4 can be applied to the locking piece 6.

In this embodiment, the locking piece base 9 is further provided with a mounting hole 92 through which the locking spring 7 passes. The locking spring 7 penetrates through the mounting hole 92, and then two ends of the locking spring are respectively abutted against the locking sheet 6 and the shell 1. The installation hole 92 is provided to fix the lock spring 7 to prevent radial deformation, so that the lock spring 7 can be in a stable working state for a long time.

Reset spring 8 sets up in casing 1 to exert the effort towards spring bolt 22 one side to spring bolt assembly 2, when the effort was not exerted to spring bolt assembly 2 to inner thumb peach 3, outer thumb peach 4 promptly, reset spring 8 can make spring bolt assembly 2 remove to the outside of casing 1, and spring bolt 22 stretches out outside casing 1. Specifically, in this embodiment, the return spring 8 is a spring in a compressed state, and one end is fixed and the other end abuts on the tongue drive frame 23. As shown in fig. 1 to 4, in this embodiment, the latch driving frame 23 has a U-shaped structure, so that the return spring 8 is disposed between two sidewalls of the latch driving frame 23. One end of the return spring 8 is fixedly connected to the fixing plate 12 arranged between the inner walls of the two shells 1, and the other end of the return spring abuts against the inner wall of the bolt driving frame 23. When the latch bolt driving frame 23 is not acted by other components, the return spring 8 can push the latch bolt driving frame 23 to the outside of the housing 1, so that the latch bolt 22 extends to the outside of the housing 1.

In practical application, the lock core structure can realize reverse locking by rotating the middle shift peach 5 to enable the stopping part 61 to be positioned at the periphery of the outer shift peach 4, at the moment, the rotation of the outer shift peach 4 is limited, and unlocking cannot be completed at one side outside a door; under the state of back locking, rotate interior thumb wheel 3 or make spring bolt 22 slide to casing 1 (for example close the door), all can drive well thumb wheel 5 and rotate for backstop portion 61 moves to the periphery of well thumb wheel 5, removes the restriction to outer thumb wheel pivoted, removes back locking promptly. In other words, if the center picks 5 are turned by mistake before the door is closed, the lock cylinder is in the lock-back state, and when the door is closed, the lock tongue 22 moves into the housing 1 to release the lock-back, so that the lock cylinder cannot be locked back when no one is inside the door. When the lock is unlocked in the reverse locking state, only the inner shifting peach 3 needs to be rotated, and the lock has the characteristic of convenient and fast unlocking.

Example two

Fig. 8 is a schematic structural view of the door lock in this embodiment, showing the overall structure of the door lock. Fig. 9a, 9b and 9c are schematic diagrams of the internal structure of the door lock in the embodiment, wherein fig. 9a and 9b show the internal structure of the door lock at two different viewing angles, and fig. 9c is the same as the viewing angle of fig. 9b, except that a partial structure of an outer handle is added.

Referring to fig. 8 to 9c, in this embodiment, a door lock is disclosed, which includes the lock cylinder structure described in the first embodiment, on the basis of which: an inner handle 20, an outer handle 30, a counter lock structure 40 and an emergency unlocking structure 50.

Wherein, the one end of interior handle 20 is connected with interior peach-shaped 3 synchronous rotations of dialling, for example directly links to each other, perhaps realizes synchronous rotation through square union coupling, and the peach-shaped 3 rotations of dialling in can driving through rotating interior handle 20, and then realizes relieving the counter lock and unblank.

The one end of outer handle 30 is rotated with outer peach 4 is synchronous to be connected, for example directly links to each other, perhaps realizes synchronous the rotation through square union coupling, can drive outer peach 4 rotations of dialling through rotating outer handle 30, and then realizes unblanking under the condition that the lock is not locked.

The one end of the back locking structure 40 is connected with the middle peach 5 in a synchronous rotating mode, for example, the back locking structure is directly connected with the middle peach 5, or the back locking structure is connected through a connecting rod to achieve synchronous rotation, the middle peach 5 can be driven to rotate through the rotation of the back locking structure 40, and then back locking is achieved.

The inner handle 20 and the inner shift block 3, the outer handle 30 and the outer shift block 4, and the counter lock structure 40 and the middle shift block 5 are all connected in a synchronous rotation manner, three structural forms for realizing the synchronous rotation connection are provided above, needless to say, other known structures can be adopted by those skilled in the art to realize the synchronous rotation connection, and no further description is given here.

The emergency unlocking structure 50 is connected with the middle shifting peach 5, and when the door lock is in an unlocking state, the middle shifting peach 5 can be driven to rotate to realize unlocking.

As shown in fig. 9a and 9b, the back locking structure 40 includes: a pressure rotary cylinder 401 and an anti-lock button 402. Wherein the pressure rotary cylinder 401 is disposed coaxially with the inner handle 20 and inside the inner handle 20. The inner handle 20 is provided with a slide groove for the rotary cylinder 401 to rotate around the axial direction (Y-axis direction in the drawing), in other words, the rotary cylinder 401 can only rotate around the axial direction. One end of the pressing rotary cylinder 401 is synchronously and rotatably connected with the middle shift peach 5 through a connecting rod, and in another embodiment, the connecting rod can be designed to be integrated with the pressing rotary cylinder 401. Two symmetrical spiral surfaces 403 are arranged at the other end of the pressure rotary cylinder 401 along the cylinder wall.

The back lock button 402 is disposed coaxially with the inner handle 20, one end of the back lock button extends out of the surface of the inner handle 20, and the other end of the back lock button is provided with a back lock boss 404 abutting against the spiral surface 403. And the lock back button 402 is slidably assembled with the inner handle 20, the lock back button 402 is slidable only in the axial direction at the end of the inner handle 20. When the back locking button 402 slides towards the inside of the inner handle 20, the back locking boss 404 abuts against the spiral surface 403, and can drive the pressing rotary cylinder 401 to rotate, so as to drive the middle shifting peach 5 to rotate, thereby realizing back locking.

One structural form of the back locking structure is given above, and other structural forms such as a knob and a handle can also realize synchronous rotation with the middle shifting peach, and the details are not repeated.

As shown in fig. 9b and 9c, the emergency unlocking structure 50 includes: a status indicator 501 and an emergency knob 502. One end of the status indicator 501 in this embodiment is a cylindrical structure, the end is coaxially arranged in the outer handle 30, the end is synchronously connected with the middle dial 5 in a rotating manner, and characters of "open" and "closed" are arranged on the end face of the other end of the status indicator 501, so as to show whether the door lock is in a reverse locking state. These typefaces can be displayed through the through hole arranged at the end of the outer handle 30. The outdoor user can conveniently know whether the door lock is in the back locking state. Further, a pin hole 503 is provided in the circumferential direction in the cylindrical wall of the status indicator 501.

The emergency knob 502 is coaxially disposed at an end portion of the outer handle 30, one end of the emergency knob is exposed on the surface of the outer handle 30, a groove is formed in an end face of the emergency knob, and the other end of the emergency knob is embedded in the state mark 501. The recess may be a straight, cross or polygonal configuration and the emergency knob 502 may be rotated by using a tool having the same shape as the recess. A torsion pin 504 is provided radially above the panic knob 502, and the end of the torsion pin 504 is provided in the pin hole 503. Specifically, when the door lock is in the unlocked state, the end of the torsion pin 504 is located in the middle of the pin hole 503; when the door lock is in the unlocked state, the end of the twist pin 504 is located at the end of the pin hole 503. Meanwhile, a limit structure 505 for limiting the rotation range of the torsion pin 504 is arranged in the outer handle 30. The maximum extent to which limiting structure 505 limits the rotation of the end of torsion pin 504 is the same as the length of pin hole 503.

Therefore, when the door lock is in the non-locking state, the end of the torsion pin 504 is located in the middle of the pin hole 503, and at this time, rotating the emergency knob 502 clockwise or counterclockwise can only make the torsion pin 504 abut on the end of the pin hole 503 without driving the state indicator 501 to rotate, in other words, the door lock is not locked by rotating the emergency knob 502. When the door lock is in the anti-locking state, the end part of the twist pin 504 is located at one end part of the pin hole 503, and at the moment, the emergency knob 502 is rotated clockwise or anticlockwise, so that the state mark 501 can be driven to synchronously rotate, and then the middle shifting peach 5 is driven to rotate, and the anti-locking is released.

In this embodiment, the stopper structure 505 is a stopper groove provided in the outer handle 30 to face the pin hole 503, and has a length equal to the length of the pin hole 503. In addition, two abutment surfaces facing the pin hole 503 may be provided in the outer handle 30, and the length between the two abutment surfaces is the same as the length of the pin hole 503, so that the above-described stopper function can be realized.

It should be noted that, the above-mentioned emergency unlocking structure 50 capable of unlocking the back lock and simultaneously not completing the back lock is provided, the principle is to limit the rotation range of the emergency knob 502, and meanwhile, an indirect connection relationship is established between the emergency knob 502 and the middle tumbler 5, and only when the door lock is in the back lock state, the middle tumbler 5 can be connected with the emergency knob 502, and then the back lock can be unlocked by rotating the emergency knob 502. The function of the emergency unlocking mechanism 50 can be realized by a person skilled in the art by adopting other known structural forms under the principle, and therefore, the emergency unlocking mechanism 50 in the structural form is only exemplary and non-limiting.

The door lock has the advantages of the lock core structure, simultaneously realizes the emergency unlocking function of one side outside the door, can not complete reverse locking on one side outside the door, and has higher safety. In addition, when the door lock is in an unlocking state, unlocking and unlocking the door can be completed only by rotating the inner handle on one side in the door, so that a user can complete door opening operation quickly.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a lock core structure which characterized in that, including setting up in the lock casing:

the lock tongue assembly is arranged in the shell in a sliding mode and can slide along the telescopic direction of the lock tongue;

the outer periphery of the inner shifting peach is provided with a first unlocking boss, the first unlocking boss is abutted against the spring bolt assembly, and when the inner shifting peach rotates, the first unlocking boss can drive the spring bolt assembly to slide towards the inside of the shell;

the outer shifting peach is provided with a second unlocking boss at the periphery, the second unlocking boss is abutted against the spring bolt assembly, and the second unlocking boss drives the spring bolt assembly to slide towards the inside of the shell when the outer shifting peach rotates;

the middle shifting peach is arranged between the inner shifting peach and the outer shifting peach, an unlocking baffle extending to one side of the inner shifting peach and a limiting baffle extending to one side of the outer shifting peach are arranged on the periphery of the middle shifting peach, and the unlocking baffle is positioned on the motion track of the bolt assembly when the door lock is reversely locked;

a return spring applying an urging force toward a latch bolt side to the latch bolt assembly;

a stopping part surrounding the periphery of the outer shifting peach or the middle shifting peach is arranged at one end of the locking piece, a limiting boss opposite to the limiting baffle is arranged at one side of the locking piece, and limiting grooves gradually sunken into the locking piece are arranged at two sides of the limiting boss;

the locking spring is arranged between the locking piece and the inner wall of the shell, and applies acting force towards one side of the outer shifting peach to the locking piece;

when the limiting baffle abuts against the limiting boss, the stopping part is positioned on the periphery of the middle shifting peach; when the limiting baffle is positioned in the limiting groove, the locking sheet slides towards one side of the outer shifting peach under the action force of the locking spring, so that the stopping part is positioned at the periphery of the outer shifting peach.

2. The lock cylinder structure according to claim 1,

the inner peach-shifting block comprises two first unlocking bosses which are arranged up and down;

the outer shifting peach comprises two second unlocking bosses which are arranged up and down;

the spring bolt subassembly includes spring bolt and spring bolt drive frame, the spring bolt drive frame slides and sets up in the casing, the one end of spring bolt drive frame is equipped with the butt and is in keeping away from of first unblock boss and second unblock boss the unblock ka tai of the side of spring bolt.

3. The lock cylinder structure according to claim 2,

the spring bolt with the drive frame is connected with rotating.

4. The lock cylinder structure according to claim 1,

the other end of the locking piece is provided with a rotating shaft;

still be provided with the locking plate base in the casing, be provided with the holding on the locking plate base the vertical shaft groove of rotation axis.

5. The lock cylinder structure according to claim 4,

the upper end and the lower end of the locking piece base are arranged on the sliding track of the lock tongue assembly and used for limiting the sliding distance of the lock tongue assembly to the shell.

6. The lock cylinder structure according to claim 4,

the locking piece base is provided with a mounting hole for the locking spring to pass through;

after the locking spring penetrates through the mounting hole, two ends of the locking spring are respectively abutted against the locking sheet and the shell.

7. A door lock, comprising:

the lock cylinder structure according to any one of claims 1 to 6;

an inner handle rotating synchronously with the inner peach;

an outer handle rotating synchronously with the outer peach;

the back locking structure synchronously rotates with the middle shifting peach;

the emergency unlocking structure connected with the middle shifting peach can drive the middle shifting peach to rotate when the door lock is in a back locking state.

8. The door lock of claim 7, wherein the back locking structure comprises:

the pressing rotary cylinder is coaxially arranged in the inner handle, can only rotate around the axial direction of the inner handle, one end of the pressing rotary cylinder is connected with the middle shifting peach and synchronously rotates with the middle shifting peach, and the other end of the pressing rotary cylinder is provided with two spiral surfaces along the cylinder wall;

and the back locking button is arranged at the end part of the inner handle in a sliding manner, and one end of the back locking button is provided with a back locking boss which is abutted against the spiral surface.

9. The door lock of claim 7, wherein the emergency unlocking structure comprises:

one end of the state mark is of a cylindrical structure coaxially arranged in the outer handle and is synchronously and rotatably connected with the middle shifting peach, and a pin hole is formed in the cylinder wall of the state mark along the circumferential direction;

the emergency knob is coaxially arranged at the end part of the outer handle, one end of the emergency knob is exposed on the surface of the outer handle, a rotating groove is formed in the end surface of the emergency knob, and the other end of the emergency knob is embedded into the state mark;

the torsional pin is fixedly arranged on the emergency knob along the radial direction, when the door lock is in a non-locking state, the end part of the torsional pin is positioned in the middle of the pin hole, and when the door lock is in a locking state, the end part of the torsional pin is positioned at the end part of the pin hole;

and the limiting structure is arranged on the inner wall of the outer handle and used for limiting the rotation range of the torsion pin.

10. The door lock of claim 9,

the limiting structure is a limiting groove which is formed in the inner wall of the outer handle and opposite to the pin hole, and the length of the limiting groove is equal to that of the pin hole.