CN211622928U

CN211622928U - Simple door lock

Info

Publication number: CN211622928U
Application number: CN201922099531.1U
Authority: CN
Inventors: 程倩雁
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-10-02
Anticipated expiration: 2029-11-29

Abstract

The utility model relates to a simple door lock, which comprises a lock body and a buckle box which are corresponding to each other, wherein the lock body is provided with a lock shell, and a lock tongue transmission assembly are arranged in the lock shell; one end of the lock shell is provided with a bolt outlet, and the other end of the lock shell is closed; a casing is arranged on the outer side of the lock shell, an outer handle is arranged on one side of the lock shell of the casing, and an inner handle is arranged on the other side of the lock shell of the casing; the inner handle is in transmission connection with the lock tongue through the lock tongue transmission component; the lock tongue is provided with a locking edge, the buckle box is provided with a buckle locking edge, and the buckle locking edge is positioned on one side of the buckle box, which is far away from the lock shell; after the spring bolt extends into the buckle box, the spring bolt rotates forwards around the central shaft of the spring bolt through the spring bolt transmission assembly by the inner handle, and the locking edge of the spring bolt is abutted against the side surface of the buckle lock edge of the buckle box, which deviates from the lock body, so that locking is realized. The utility model discloses simple structure, convenient to use, small in size can combine together with moving the door well.

Description

Simple door lock

Technical Field

The utility model relates to a simple and easy lock belongs to tool to lock technical field.

Background

To the best of the inventor's knowledge, it is often desirable for sliding doors to be aesthetically pleasing and to use locks that are generally integral with the sliding door.

Through search, Chinese patent application with application numbers CN201810152590.8 and CN108278050A discloses a mute double-hook sliding door lock, which comprises a buckle box component, a lock shell, a bolt and a peach-poking component; the buckle box component comprises a buckle box and a buckle plate, the lock shell comprises a lining plate, a base and an upper cover, the front part of the lock shell is provided with a lock tongue cavity, and the rear part of the lock shell is provided with a peach poking cavity; the lock tongue comprises a square tongue, a hook tongue and a mute gasket, wherein the square tongue consists of a square tongue frame at the front end and a pull rod at the rear end; the hook tongue comprises two hook bodies, a torsion spring and a pin which are symmetrically arranged; the two hook bodies are fixed in the hook tongue cavity, and the two torque arms of the torsion spring respectively prop against the inner sides of the hook tongue reinforcing sheets to enable the two hook bodies to extend out of the upper side and the lower side of the hook tongue cavity; the square bolt is arranged in the bolt cavity, the pull rod at the rear end of the square bolt extends into the peach poking cavity, and when the square bolt retracts, the hook bolts rotate by taking the pin shaft as an axis, and the two hook bolts are accommodated in the hook bolt cavity.

The applicant is dedicated to the development of the lock, and the lock with a structure different from that of the prior art is specially designed for the sliding door, so as to apply for the patent.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at: aiming at the current situation of the prior art, a simple door lock is provided, has small volume and can be well integrated with a sliding door.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the simple door lock comprises a lock body and a buckle box which correspond to each other, wherein the lock body is provided with a lock shell, and the simple door lock is characterized in that a lock tongue and a lock tongue transmission assembly are arranged in the lock shell; one end of the lock shell is provided with a bolt outlet, and the other end of the lock shell is closed; a shell is arranged on the outer side of the lock shell, an outer handle is arranged on one side of the lock shell, and an inner handle is arranged on the other side of the lock shell; the inner handle is in transmission connection with the lock tongue through the lock tongue transmission assembly; the lock tongue is provided with a locking edge, the buckle box is provided with a buckling edge, and the buckling edge is positioned on one side of the buckle box, which is far away from the lock shell;

the door lock has: after the spring bolt extends into the buckle box, the spring bolt is rotated forwards around the central shaft of the spring bolt by an inner handle through the spring bolt transmission assembly, and the locking edge of the spring bolt is abutted against the side surface of the buckle lock edge of the buckle box, which deviates from the lock body, so that a locked locking state is formed; and on the basis of the locked state, the lock tongue rotates reversely around the central shaft of the lock tongue by the inner handle through the lock tongue transmission assembly, and the locking edge of the lock tongue is separated from the side surface of the buckling edge of the buckling box, which deviates from the lock body, so that the unlocking state is realized.

In the structure, the lock tongue can be driven by the inner handle to rotate, so that the whole door lock is locked and unlocked, and the door of the sliding door can be locked or unlocked as required.

The utility model discloses can also adopt following preferred scheme:

preferably, the lock tongue is composed of a base, a pillar and a locking plate, one end of the base is in transmission connection with the lock tongue transmission assembly, the other end of the base is fixedly connected with one end of the pillar, the other end of the pillar is fixedly connected with one side face of the locking plate, and the other side face of the locking plate faces the buckle box; the locking edge of the lock tongue is positioned on the locking plate, the locking plate is composed of a fixed connection part and a locking edge, the fixed connection part is fixedly connected with the other end of the pillar, the locking edge is positioned on one side of the fixed connection part or positioned on the periphery of the fixed connection part, and the locking edge is not in contact with the pillar.

Adopt this preferred scheme, can further optimize the spring bolt structure.

Preferably, the buckle box is provided with a base plate, two ends of the base plate are respectively provided with a fastener hole or a fastener groove, the base plate is provided with a through hole for the bolt to pass through, the buckle locking edge is an annular component, the buckle locking edge is positioned in the circumferential direction of the through hole and positioned on the inner side of the base plate, and the buckle locking edge is fixedly connected with the base plate.

With this preferred arrangement, the structure of the buckle box can be further optimized, and the fastener holes or fastener grooves at both ends of the base plate are used to fix the base plate to the door frame.

Preferably, the bolt transmission assembly comprises a sleeve, a rotating shaft, a driven gear, a driving gear, a thumb wheel shaft and a square bar; one end of the sleeve is open, the other end of the sleeve is coaxially and fixedly connected with one end of the rotating shaft, and the other end of the rotating shaft is coaxially and fixedly connected with the driven gear; the lock shell is provided with two openings, one end of the poking wheel shaft is inserted into one opening, and the other end of the poking wheel shaft is inserted into the other opening; one end of the shifting wheel shaft is coaxially clamped with the driving gear, and the driving gear and the driven gear are vertical to each other and are mutually meshed; the poking wheel shaft is provided with a coaxial square hole, and the square hole is matched with the square bar; the square bar is clamped with the inner handle;

one end of the rotating shaft is provided with a buckle, and the clamping end of the buckle is positioned in the sleeve; a spring is arranged in the sleeve, one end of the spring is abutted against one end of the rotating shaft, and the other end of the spring is abutted against one end of the lock tongue base; one end of the lock tongue base is provided with a protruding handle matched with the clamping end of the buckle;

the side wall of the sleeve is provided with a sliding groove along the axial direction of the sleeve, and the side surface of the lock tongue base is provided with a protruding rod matched with the sliding groove; under the matching action of the sliding groove and the protruding rod, the lock tongue and the sleeve form an axial moving pair with circumferential restraint.

It should be noted that the circumferential constraint means: the lock tongue and the sleeve cannot rotate relatively, and the lock tongue and the sleeve can only rotate together; axial moving auxiliary finger: the lock tongue can reciprocate along the axial in the sleeve.

By adopting the preferred scheme, the structure of the lock tongue transmission assembly can be further optimized, so that the lock tongue can be better transmitted to the lock tongue by the action of the inner handle, and the rotation of the lock tongue controlled by the inner handle can be more smoothly realized. Wherein, the buckle cooperatees with the spring, makes the spring bolt press down at external force, or retract the sleeve and with the buckle joint, or ejecting sleeve under the spring action.

Preferably, the deadbolt actuation assembly has: the interior handle rotates under the exogenic action, and interior handle drives through the square bar that the thumb wheel axle is rotatory, and the thumb wheel axle drives the driving gear rotatory, and the driving gear drives driven gear rotatory, and driven gear drives the sleeve through the pivot and rotates, and the sleeve drives the rotatory transmission action state of spring bolt.

With this preferred arrangement, the state of the deadbolt actuation assembly can be further defined unambiguously.

Preferably, the outer handle includes a handle cover and a handle case; the handle cover is fixedly connected with the handle box through threaded connection, and the handle box is fixedly connected with the casing; a recess is formed in the outer side face of the handle cover, a connecting column which is rotatably connected with the handle cover is arranged in the recess, one end of the connecting column is located in the recess and located on one side of the handle cover, the other end of the connecting column penetrates through the handle cover and located on the other side of the handle cover, a straight groove is formed in one end of the connecting column, a square hole is formed in the other end of the connecting column, and the square hole is clamped with the square bar;

the door lock further has: on the basis of the locked state, external force rotates the connecting column through the straight groove of the external handle, the connecting column enables the spring bolt to rotate reversely around the central shaft of the connecting column through the spring bolt transmission assembly, and the locking edge of the spring bolt and the side face of the buckle locking edge of the buckle box, which deviates from the lock body, are separated, so that the unlocking state of the door is realized.

With this preferred solution, the door lock can be further provided with an emergency unlocking function outside the door for emergency.

Preferably, the inner handle comprises a handle cover and a handle box; the handle cover is fixedly connected with the handle box through threaded connection, and the handle box is fixedly connected with the casing; a recess is formed in the outer side face of the handle cover, a connecting column rotationally connected with the handle cover and a handle ring rotationally connected with the connecting column are arranged in the recess, and the plane of the connecting column in the rotating direction is perpendicular to the plane of the handle ring in the rotating direction; the one end of spliced pole is located sunken and is located one side, the other end that the handle was covered and pass the handle lid and be located the opposite side of handle lid, the other end of spliced pole has the square hole, square hole and square bar joint.

By adopting the preferable scheme, the structure of the inner handle can be further optimized.

Preferably, a fixing ring is further arranged in the circumferential direction of the rotating shaft, and the fixing ring is located in the lock shell and clamped with the lock shell; the other end of the lock shell is provided with a fixing block, the fixing block is provided with a limiting blind hole, an elastic part and a clamping bead are arranged in the limiting blind hole, and the elastic part is located between the bottom of the limiting blind hole and the clamping bead; and a group of clamping grooves matched with the clamping balls are formed in the side surface of the shifting wheel shaft, and the clamping grooves extend along the axial direction of the shifting wheel shaft.

By adopting the preferred scheme, on one hand, the fixed ring can play a role in limiting the rotating shaft, and the driven gear is prevented from being disengaged from the driving gear due to the movement of the rotating shaft; on the other hand, when the inner handle drives the lock tongue to rotate through the lock tongue transmission component, the positions of the inner handle, the lock tongue transmission component and the lock tongue can be fixed under the matching of the clamping beads and the clamping grooves.

Preferably, the sleeve shell is formed by matching a male lock particle sleeve and a female lock particle sleeve; the male side lock particle sleeve and the female side lock particle sleeve are positioned on two sides of the lock shell; the male side lock particle sleeve and the female side lock particle sleeve are respectively provided with a through hole for a square bar to pass through; the outer handle and the inner handle are in one-to-one correspondence with the male edge lock particle sleeve and the female edge lock particle sleeve and are fixedly connected through a fastener;

the opening of the lock shell is close to the other end of the lock shell; one end of the lock shell is provided with an installation plate, the installation plate is provided with a through hole for the bolt to pass through, and the installation plate is also provided with a fastener hole; the mounting plate is formed by fixedly connecting a bottom plate and a panel, and the bottom plate is positioned on the inner side of the panel; one end of the sleeve abuts against the inner side of the bottom plate.

By adopting the preferred scheme, the casing structure can be further optimized; the fastener hole of mounting panel is used for fixing the lock body on the door body.

Preferably, the buckle box is further provided with a buckle plate component on the outer side, and the buckle box is further provided with a dustproof box component on the inner side; the buckle plate component and the dust-proof box component are respectively provided with a fastener hole or a fastener groove.

By adopting the preferred scheme, the fastening piece holes or the fastening piece grooves are used for fixing the buckle plate component and the dustproof box component on the door frame, and the buckle plate component, the dustproof box component and the buckle box form the buckle box assembly together.

The utility model discloses simple structure, convenient to use, small in size can combine together with moving the door well.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic diagram of a primary explosion according to an embodiment of the present invention.

Fig. 2 is a schematic diagram of a secondary explosion according to an embodiment of the present invention.

Fig. 3 and 4 are schematic diagrams of the driving gear, the driven gear and the thumb wheel shaft of the embodiment of the present invention with different angles.

Fig. 5 is a schematic diagram of a local explosion of the clamping bead and the clamping groove in the embodiment of the present invention.

Fig. 6 to 10 are schematic diagrams of the embodiment of the present invention.

Fig. 11 is an implementation schematic diagram of an outer handle viewing angle according to an embodiment of the present invention.

Detailed Description

Examples

As shown in fig. 1 to 5, the simple door lock of the embodiment includes a lock body 01 and a buckle case 02 corresponding to each other, the lock body 01 has a lock case 03, and a bolt 04 and a bolt driving assembly are disposed in the lock case 03; one end of the lock shell 03 is provided with a bolt outlet, and the other end of the lock shell 03 is closed; a shell 05 is arranged on the outer side of the lock shell 03, an outer handle 06 is arranged on one side of the lock shell 03 of the shell 05, and an inner handle 07 is arranged on the other side of the lock shell 03 of the shell 05; the inner handle 07 is in transmission connection with a lock tongue 04 through a lock tongue transmission component; the bolt 04 has a locking edge 08 and the buckle housing 02 has a buckle edge 09, the buckle edge 09 being located on the side of the buckle housing 02 facing away from the lock housing 03.

The door lock of the embodiment has: after the bolt 04 extends into the buckle box 02, the bolt 04 is rotated forwards around the central axis thereof by the inner handle 07 through the bolt transmission assembly, and the locking edge 08 of the bolt 04 is abutted against the side surface of the buckle locking edge 09 of the buckle box 02 departing from the lock body 01, so as to form a locked locking state; and on the basis of the locked state, the inner handle 07 enables the bolt 04 to rotate reversely around the central shaft thereof through the bolt transmission assembly, and enables the locking edge 08 of the bolt 04 to be separated from the side surface of the locking edge 09 of the buckle box 02 departing from the lock body 01, thereby realizing the unlocked state.

Specifically, as shown in fig. 2, the latch 04 is composed of a base 10, a pillar 11, and a locking plate 12, one end of the base 10 is in transmission connection with the latch transmission assembly, the other end of the base 10 is fixedly connected with one end of the pillar 11, the other end of the pillar 11 is fixedly connected with one side surface of the locking plate 12, and the other side surface of the locking plate 12 faces the buckle box 02; the locking edge 08 of the bolt 04 is located on the locking plate 12, the locking plate 12 is composed of a fixed connection part 13 and a locking edge 08, the fixed connection part 13 is fixedly connected with the other end of the pillar 11, the locking edge 08 is located on the periphery of the fixed connection part 13 (or on one side of the fixed connection part 13 according to actual conditions), and the locking edge 08 is not in contact with the pillar 11.

The buckle box 02 has a base plate 14, both ends of the base plate 14 are respectively provided with a fastener hole or a fastener groove 61, the base plate 14 is provided with a through hole for the bolt 04 to pass through, the buckling edge 09 is an annular member, the buckling edge 09 is located at the circumferential direction of the through hole and at the inner side of the base plate 14, and the buckling edge 09 is fixedly connected with the base plate 14.

The bolt transmission assembly comprises a sleeve 15, a rotating shaft 16, a driven gear 17, a driving gear 18, a thumb wheel shaft 19 and a square bar 20; one end of the sleeve 15 is open, the other end of the sleeve is coaxially and fixedly connected with one end of the rotating shaft 16, and the other end of the rotating shaft 16 is coaxially and fixedly connected with the driven gear 17; the lock shell 03 is provided with two

open holes

21 and 22, one end of the dial wheel shaft 19 is inserted into one open hole 21, and the other end of the dial wheel shaft 19 is inserted into the other open hole 22; as shown in fig. 3 and 4, one end of the thumb wheel shaft 19 is coaxially clamped with the driving gear 18, and the driving gear 18 and the driven gear 17 are perpendicular to each other and are meshed with each other; the poke wheel shaft 19 is provided with a coaxial square hole which is matched with the square bar 20; the square bar 20 is clamped with the inner handle 07.

A buckle 23 is arranged at one end of the rotating shaft 16, and a clamping end of the buckle 23 is positioned in the sleeve 15; a spring 24 is arranged in the sleeve 15, one end of the spring 24 is abutted against one end of the rotating shaft 16, and the other end of the spring 24 is abutted against one end of the bolt base 10; one end of the bolt base 10 is provided with a protruding handle 25 matched with the clamping end of the buckle 23.

A sliding groove 26 is formed in the side wall of the sleeve 15 along the axial direction of the sleeve 15, and a protruding rod 27 matched with the sliding groove 26 is arranged on the side face of the bolt base 10; under the matching action of the sliding groove 26 and the protruding rod 27, the latch 04 and the sleeve 15 form an axial moving pair with circumferential restraint. Wherein, circumferential restraint means: the bolt 04 and the sleeve 15 cannot rotate relatively, and the bolt 04 and the sleeve can only rotate together; axial moving auxiliary finger: the latch bolt 04 is axially reciprocable within the sleeve 15.

The above-mentioned spring bolt transmission assembly has: the inner handle 07 rotates under the action of external force, the inner handle 07 drives a shifting wheel shaft 19 to rotate through a square bar 20, the shifting wheel shaft 19 drives a driving gear 18 to rotate, the driving gear 18 drives a driven gear 17 to rotate, the driven gear 17 drives a sleeve 15 to rotate through a rotating shaft 16, and the sleeve 15 drives a lock tongue 04 to rotate.

The outer handle 06 includes a handle cover 44 and a handle case 45; the handle cover 44 is fixedly connected with the handle box 45 through threaded connection, and the handle box 45 is fixedly connected with the casing 05; a recess 46 is formed in the outer side surface of the handle cover 45, a connecting column 47 rotatably connected with the handle cover 45 is arranged in the recess 46, one end of the connecting column 47 is located in the recess 46 and located on one side of the handle cover 45, the other end of the connecting column 47 penetrates through the handle cover 45 and located on the other side of the handle cover 45, a straight groove 48 (shown in fig. 11) is formed in one end of the connecting column 47, a square hole is formed in the other end of the connecting column 47, and the square hole is clamped with the square bar 20; the door lock of the present embodiment further has: on the basis of the locked state, external force rotates the connecting column 47 through the straight groove 48 of the outer handle 06, the connecting column 47 enables the bolt 04 to rotate reversely around the central shaft through the bolt transmission assembly, and the locking edge 08 of the bolt 04 and the side surface of the locking edge 09 of the buckle box 02 departing from the lock body are separated, so that the unlocking state of the door is realized.

The inner handle 07 comprises a handle cover 37 and a handle box 38; the handle cover 37 is fixedly connected with the handle box 38 through threaded connection, the handle box 38 is fixedly connected with the sleeve 05, a recess 39 is arranged on the outer side surface of the handle cover 37, a connecting column 40 rotationally connected with the handle cover 37 and a handle ring 41 rotationally connected with the connecting column 40 are arranged in the recess 39, and the plane of the connecting column 40 in the rotating direction is perpendicular to the plane of the handle ring 41 in the rotating direction; one end of the connecting column 40 is positioned in the recess 39 and positioned on one side of the handle cover 37, the other end of the connecting column passes through the handle cover 37 and positioned on the other side of the handle cover 37, the other end of the connecting column 40 is provided with a square hole, and the square hole is clamped with the square bar 20.

In addition, the circumference of the rotating shaft 16 is also provided with a fixing ring 44, and the fixing ring 44 is positioned in the lock shell 03 and is clamped with the lock shell 03.

As shown in fig. 5, a fixing block 28 is disposed at the other end of the lock housing 03, the fixing block 28 is provided with a blind limiting hole 29, an elastic member 30 (such as a spring) and a clamping bead 31 are disposed in the blind limiting hole 29, and the elastic member 30 is located between the bottom of the blind limiting hole 29 and the clamping bead 31; the side of the thumb wheel shaft 19 is provided with a group of clamping grooves 32 matched with the clamping balls 31, and the clamping grooves 32 extend along the axial direction of the thumb wheel shaft 19.

The sleeve 05 is formed by matching a male lock particle sleeve 33 and a female lock particle sleeve 34; the male lock particle sleeve 33 and the female lock particle sleeve 34 are positioned at two sides of the lock shell 03; the male side lock particle sleeve 33 and the female side lock particle sleeve 34 are respectively provided with a through hole for the square bar 20 to pass through; the outer handle 06 and the inner handle 07 correspond to the male edge lock particle sleeve 33 and the female edge lock particle sleeve 34 one by one and are fixedly connected through fasteners.

The

open holes

21 and 22 of the lock shell 03 are close to the other end of the lock shell 03; one end of the lock shell 03 is provided with a mounting plate, the mounting plate is provided with a through hole for the bolt 04 to pass through, and the mounting plate is also provided with a fastener hole 62; the mounting plate is formed by fixedly connecting a bottom plate 35 and a panel 36, and the bottom plate 35 is positioned on the inner side of the panel 36; one end of the sleeve 15 abuts against the inside of the bottom plate 35.

The buckle box 02 is also provided with a buckle plate member 42 at the outer side, and the buckle box 02 is also provided with a dustproof box member 43 at the inner side; the striker member 42 and the dust box member 43 have fastener holes or

fastener slots

63, 64, respectively.

The use process of this embodiment is as follows, taking locking as an example:

(1) as shown in fig. 6 and 7, latch bolt 04 is pressed, catch 23 releases latch bolt 04, and spring 24 ejects latch bolt 04.

(2) As shown in fig. 8, pulling the inner handle 07 moves the sliding door until the locking bolt 04 enters the buckle box 02.

(3) As shown in fig. 9 and 10, the inner handle 07 is turned to rotate the latch bolt 04, and the locking edge 08 of the latch bolt is brought into contact with the locking edge 09 of the buckle box 02 to form a lock, thereby completing the locking.

In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention.

Claims

1. The simple door lock comprises a lock body and a buckle box which correspond to each other, wherein the lock body is provided with a lock shell, and the simple door lock is characterized in that a lock tongue and a lock tongue transmission assembly are arranged in the lock shell; one end of the lock shell is provided with a bolt outlet, and the other end of the lock shell is closed; a shell is arranged on the outer side of the lock shell, an outer handle is arranged on one side of the lock shell, and an inner handle is arranged on the other side of the lock shell; the inner handle is in transmission connection with the lock tongue through the lock tongue transmission assembly; the lock tongue is provided with a locking edge, the buckle box is provided with a buckling edge, and the buckling edge is positioned on one side of the buckle box, which is far away from the lock shell;

2. The simple door lock of claim 1, wherein the bolt is composed of a base, a pillar and a locking plate, one end of the base is in transmission connection with the bolt transmission assembly, the other end of the base is fixedly connected with one end of the pillar, the other end of the pillar is fixedly connected with one side surface of the locking plate, and the other side surface of the locking plate faces the buckle box; the locking edge of the lock tongue is positioned on the locking plate, the locking plate is composed of a fixed connection part and a locking edge, the fixed connection part is fixedly connected with the other end of the pillar, the locking edge is positioned on one side of the fixed connection part or positioned on the periphery of the fixed connection part, and the locking edge is not in contact with the pillar.

3. The simple door lock as claimed in claim 2, wherein the fastening box has a base plate, the base plate has a fastening hole or a fastening groove at each end, the base plate has a through hole for the bolt to pass through, the fastening edge is a ring-shaped member, the fastening edge is located at the inner side of the base plate and around the through hole, and the fastening edge is fixedly connected to the base plate.

4. The simple door lock of claim 2, wherein the latch bolt transmission assembly comprises a sleeve, a rotating shaft, a driven gear, a driving gear, a thumb wheel shaft and a square bar; one end of the sleeve is open, the other end of the sleeve is coaxially and fixedly connected with one end of the rotating shaft, and the other end of the rotating shaft is coaxially and fixedly connected with the driven gear; the lock shell is provided with two openings, one end of the poking wheel shaft is inserted into one opening, and the other end of the poking wheel shaft is inserted into the other opening; one end of the shifting wheel shaft is coaxially clamped with the driving gear, and the driving gear and the driven gear are vertical to each other and are mutually meshed; the poking wheel shaft is provided with a coaxial square hole, and the square hole is matched with the square bar; the square bar is clamped with the inner handle;

5. The simplified door lock as claimed in claim 4, wherein the latch driving unit comprises: the interior handle rotates under the exogenic action, and interior handle drives through the square bar that the thumb wheel axle is rotatory, and the thumb wheel axle drives the driving gear rotatory, and the driving gear drives driven gear rotatory, and driven gear drives the sleeve through the pivot and rotates, and the sleeve drives the rotatory transmission action state of spring bolt.

6. The simple door lock of claim 4, wherein the outer handle includes a handle cover and a handle box; the handle cover is fixedly connected with the handle box through threaded connection, and the handle box is fixedly connected with the casing; a recess is formed in the outer side face of the handle cover, a connecting column which is rotatably connected with the handle cover is arranged in the recess, one end of the connecting column is located in the recess and located on one side of the handle cover, the other end of the connecting column penetrates through the handle cover and located on the other side of the handle cover, a straight groove is formed in one end of the connecting column, a square hole is formed in the other end of the connecting column, and the square hole is clamped with the square bar;

7. The simple door lock of claim 4, wherein the inner handle comprises a handle cover and a handle box; the handle cover is fixedly connected with the handle box through threaded connection, and the handle box is fixedly connected with the casing; a recess is formed in the outer side face of the handle cover, a connecting column rotationally connected with the handle cover and a handle ring rotationally connected with the connecting column are arranged in the recess, and the plane of the connecting column in the rotating direction is perpendicular to the plane of the handle ring in the rotating direction; the one end of spliced pole is located sunken and is located one side, the other end that the handle was covered and pass the handle lid and be located the opposite side of handle lid, the other end of spliced pole has the square hole, square hole and square bar joint.

8. The simple door lock as claimed in claim 4, wherein a fixing ring is further provided around the shaft, the fixing ring is located inside the lock housing and is clamped with the lock housing; the other end of the lock shell is provided with a fixing block, the fixing block is provided with a limiting blind hole, an elastic part and a clamping bead are arranged in the limiting blind hole, and the elastic part is located between the bottom of the limiting blind hole and the clamping bead; and a group of clamping grooves matched with the clamping balls are formed in the side surface of the shifting wheel shaft, and the clamping grooves extend along the axial direction of the shifting wheel shaft.

9. The simple door lock of claim 4, wherein the shell is formed by matching a male lock cylinder sleeve and a female lock cylinder sleeve; the male side lock particle sleeve and the female side lock particle sleeve are positioned on two sides of the lock shell; the male side lock particle sleeve and the female side lock particle sleeve are respectively provided with a through hole for a square bar to pass through; the outer handle and the inner handle are in one-to-one correspondence with the male edge lock particle sleeve and the female edge lock particle sleeve and are fixedly connected through a fastener;

10. The simple door lock as claimed in claim 4, wherein a buckle member is further provided at an outer side of the buckle case, and a dust-proof case member is further provided at an inner side of the buckle case; the buckle plate component and the dust-proof box component are respectively provided with a fastener hole or a fastener groove.