CN219491956U - Reverse locking mechanism - Google Patents

Abstract

The utility model provides a back locking mechanism, which comprises a fixed plate fixed with a door, an inner handle assembly rotating relative to the fixed plate, a transmission shaft, a sliding piece movably arranged in the inner handle assembly, and a locking mechanism, wherein the sliding piece is in a locking state and a unlocking state, and is clamped with the locking part of the fixed plate in the locking state of the sliding piece to form a barrier for limiting the rotation of the handle assembly; the locking part of the sliding part, which is separated from the fixed plate under the unlocking state of the sliding part, enables the handle assembly to rotate relative to the fixed plate, and the sliding part further comprises a rotating part which is in linkage fit with the transmission shaft, and a driving mechanism for driving the sliding part to axially move is arranged between the rotating part and the sliding part. The anti-lock mechanism has novel structure, convenient unlocking, more compact structure when being arranged on the inner handle, simple whole appearance and little influence of dust when being used for a long time.

Description

Reverse locking mechanism

Technical Field

The utility model belongs to the technical field of door locks, and particularly relates to a handle door lock.

Background

The handle lock is opened the lock through rotatory handle, because its simple structure is widely used, and the handle lock on the market at present sets up the lock tongue in addition and carries out the back-lock to the lock usually, thereby also has and restrict the handle rotation through setting up latch mechanism on the handle and realize the back-lock function, like patent number 201920859365.8, patent name is: the door fitting with a handle which can be locked at one side specifically discloses a handle door lock, wherein the back locking of the handle door lock is that a movable locking piece is arranged on an inner handle, and the back locking of the door lock is realized by pushing the locking piece into a locking position, so that the door lock is simple and easy to realize, but has a plurality of defects such as blocked movement of the locking piece when the door lock is used for a long time; the handle is provided with a long chute, dust is easy to enter, and the movement of the locking piece is further increased after the dust enters.

Disclosure of Invention

Aiming at the technical problems in the background technology, the utility model aims to provide a handle door lock which is novel in structure and is less influenced by dust after long-time use.

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

the scheme provides a back locking mechanism, which comprises a fixed plate fixed with a door, an inner handle assembly rotating relative to the fixed plate, a transmission shaft, a sliding piece movably arranged in the inner handle assembly, and a locking mechanism, wherein the sliding piece is in a locking state and an unlocking state, and is clamped with the locking part of the fixed plate to form a barrier for limiting the rotation of the handle assembly in the locking state of the sliding piece; the locking part of the sliding part, which is separated from the fixed plate under the unlocking state of the sliding part, enables the handle assembly to rotate relative to the fixed plate, and the sliding part further comprises a rotating part which is in linkage fit with the transmission shaft, and a driving mechanism for driving the sliding part to axially move is arranged between the rotating part and the sliding part.

Preferably, the driving mechanism comprises a chute which is at least partially inclined on the rotating member, the rotating member is rotatably matched in the handle assembly, a limiting mechanism which limits the rotation of the sliding member is arranged in the handle assembly, the sliding member is provided with a convex column which extends into the chute of the rotating member, and when the rotating member rotates, the inner wall of the chute of the rotating member pushes the convex column on the sliding member to drive the sliding member to axially displace.

Preferably, the locking part is a first clamping groove formed in the fixed plate, the sliding part is provided with a clamping protrusion movably inserted in the first clamping groove of the fixed plate, the limiting mechanism is a clamping groove formed between one of the screw mounting posts of the handle shell and the inner wall of the handle shell, and the protruding post arranged on the sliding part is arranged in the clamping groove.

Preferably, the rotary member is provided with a driving wheel for driving the rotary member to rotate, wherein the rotary member and the driving wheel are provided with mutually meshed tooth-shaped structures, the driving wheel at least partially extends to the outside of the handle assembly, and the driving wheel and the rotary member are rotatably connected to the handle assembly.

Preferably, the part of the thumb wheel extending to the outside of the handle assembly is provided with a knurled structure.

Preferably, the handle assembly comprises a handle and a bottom plate, the bottom plate is fixedly assembled with the handle, and a through groove for the transmission shaft and the sliding piece to clamp and move is formed in the bottom plate.

Preferably, the rotating member has a hollow structure, and the sliding member is embedded in the hollow portion of the rotating member.

Preferably, the protruding column is a screw radially fixed on the sliding piece.

Preferably, the transmission shaft comprises a square outer shaft with a square outer part and an inner shaft rotatably connected in the outer shaft, wherein two ends of the outer shaft are respectively in linkage fit with handles of the inner handle assembly and the outer handle assembly, the inner shaft is positioned at the end part of the outer handle assembly and is connected with the lock cylinder, and the inner shaft is positioned at the end part of the inner handle assembly and is in linkage fit with the rotating piece.

The utility model has the beneficial effects that: the anti-lock mechanism has novel structure, convenient unlocking, more compact structure when being arranged on the inner handle, simple whole appearance and little influence of dust when being used for a long time.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is an exploded view of the structure of the present utility model;

FIG. 3 is a schematic view of the structure of the inner handle portion of the opening fixing plate;

FIG. 4 is a schematic structural view of a rotating member;

FIG. 5 is a schematic view of a slider structure;

FIG. 6 is a schematic structural view of a fixing plate;

FIG. 7 is a schematic structural view of a base plate;

fig. 8 is a schematic structural view of the transmission shaft.

Detailed Description

The utility model is further illustrated below with reference to examples.

The handle door lock as shown in figures 1-8 comprises an inner handle part 1 and an outer handle part 2, wherein the inner handle part and the outer handle part are respectively arranged at two sides of a door plate and can move relative to the door plate, the two sides of the door plate are respectively fixed with a fixed plate 3, the fixed plate 3 of the inner handle part 1 is provided with a locking part 31, the locking part 31 is a clamping groove, the inner handle part 2 and the outer handle part 2 are connected through a transmission shaft 4 in a transmission way, the inner handle part 1 comprises an L-shaped handle shell 11, a bottom plate 12 fixedly connected with the handle shell 11, a rotating piece 13 movably connected inside the handle shell 11, a plurality of screw mounting posts for screw connection are arranged between the bottom plate and the handle shell, the outer part of the rotating piece 13 is provided with a tooth-shaped structure, a thumb wheel 14 is movably connected on the handle shell 11, the driving wheel 14 is coaxially provided with a gear 16 meshed with an external tooth structure of the rotating member 13, the rotating member 13 is driven to rotate by driving the driving wheel 14, the rotating member 13 is a hollow cylinder with an opening at one end, an inclined chute 131 or a spiral groove is at least partially arranged on the side wall of the cylinder, so that the sliding member 15 can be pushed to axially displace during rotation, the sliding member 15 is movably embedded in the rotating member 13, the sliding member 15 is a hollow cylinder, a convex column 151 extending into the chute 131 of the rotating member 13 is radially arranged on the sliding member 15, the convex column 151 is a screw connected to the sliding member 15 in the embodiment, a clamping convex 152 inserted into a locking part 31 of the fixed plate 3 is arranged on the outer side of one end of the sliding member 15 facing the door plate, and the sliding member 15 is clamped with the locking part 31 of the fixed plate 3 in the locking state of the sliding member 15 to form a barrier for limiting the rotation of the handle assembly; the handle assembly is rotatable relative to the fixed plate 3 by the slide 15 being disengaged from the locking portion 31 of the fixed plate 3 in the unlocked state of the slide 15. The transmission shaft 4 of this embodiment includes an outer square shaft 41 with square outer part and an inner shaft 42 rotatably connected in the outer shaft 41, wherein both ends of the outer shaft 41 are respectively in linkage fit with handles of the inner handle assembly and the outer handle assembly, the inner shaft 42 is located at the end part of the outer handle assembly and connected with the lock core, and the inner shaft 42 is located at the end part of the inner handle assembly and in linkage fit with the rotating member 13. In order to make the handle housing 11 and the transmission shaft 4 capable of interlocking fit, a jackscrew 111 is connected between the handle housing 11 and the transmission shaft 4, the jackscrew 111 is screwed on the handle housing 11, the end of the jackscrew 111 is abutted on the plane of the outer shaft 41 of the transmission shaft 4, in addition, in this embodiment, a jack post 122 extending to be abutted on the plane of the outer shaft 41 of the transmission shaft 4 is integrally or fixedly arranged on the bottom plate 12, and in order to make the dial 14 capable of being smoothly shifted, a positioning boss 121 for positioning the shaft of the dial 14 is arranged on the bottom plate 12.

The locking portion 31 is a first locking groove provided on the fixing plate 3.

In order to facilitate the pulling of the thumb wheel 14, the thumb wheel 14 is extended at least partially to the outside of the handle housing 11, and the corresponding handle housing is provided with a through slot for the thumb wheel to move. Further portions of the thumb wheel 14 extending to the exterior of the handle assembly are provided with knurled features.

In this embodiment, the bottom plate 12 is provided with a through slot for the transmission shaft 4 and the locking protrusion 152 of the sliding member 15 to move, a clamping slot is formed between one of the screw mounting posts of the handle housing and the inner wall of the handle housing, and the protruding post 151 mounted on the sliding member 15 is disposed in the clamping slot 112, so that the protruding post is limited to rotate when the sliding member is driven to move by the rotating member, and the sliding member is forced to slide along the axial direction of the sliding member.

The working principle of the embodiment is as follows: 1. when the thumb wheel 14 is manually shifted, the thumb wheel 14 drives the rotating piece 13 to rotate, the chute 131 of the rotating piece 13 starts to push the convex column 151, so that the sliding piece 15 rotates, and the convex column 151 on the sliding piece 15 cannot continue to rotate due to the limitation of the clamping groove of the handle shell, so that the sliding piece 15 is forced to axially move to one side of the door plate until the clamping convex 152 is clamped into the locking part 31 of the fixed plate 3, and then the locking is completed, and the handle shell 11 cannot rotate due to the limitation of the clamping convex 152 clamped into the locking part 31; 2. when the door is unlocked, the reverse poking wheel 14 drives the rotating piece 13 to reversely rotate, the sliding piece 15 is forced to axially move away from the door panel due to the common limitation of the locking part 31 and the chute 131, and when the clamping convex 152 is completely separated from the locking part 31, the door is unlocked; 3. when the door is unlocked, after the back lock is locked, the key is matched with the lock cylinder or a special tool (a screwdriver can be directly used under the condition that the lock cylinder is not arranged), the inner shaft 42 of the transmission shaft 4 is driven to rotate, the inner end part of the inner shaft 42 drives the rotating piece 13 to rotate, and the follow-up action principle is the same as that of the door to unlock.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be appreciated by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the utility model, and that simple modifications and substitutions by those skilled in the art are within the scope of the utility model without departing from the spirit and scope of the utility model.

Claims (9)

1. The utility model provides a locking mechanism, includes fixed plate, the interior handle subassembly of relative fixed plate pivoted and the transmission shaft that AND gate is fixed, its characterized in that: the fixed plate is provided with a locking part and also comprises a sliding part movably arranged in the inner handle assembly, the sliding part is provided with a locking state and an unlocking state, and the sliding part is clamped with the locking part of the fixed plate in the locking state of the sliding part to form a barrier for limiting the rotation of the handle assembly; the locking part of the sliding part, which is separated from the fixed plate under the unlocking state of the sliding part, enables the handle assembly to rotate relative to the fixed plate, and the sliding part further comprises a rotating part which is in linkage fit with the transmission shaft, and a driving mechanism for driving the sliding part to axially move is arranged between the rotating part and the sliding part.

2. A counter-lock mechanism as claimed in claim 1, wherein: the driving mechanism comprises a chute which is at least partially inclined on the rotating member, the rotating member is rotatably matched in the handle assembly, a limiting mechanism which limits the rotation of the sliding member is arranged in the handle assembly, a convex column which extends into the chute of the rotating member is arranged on the sliding member, and when the rotating member rotates, the inner wall of the chute of the rotating member pushes the convex column on the sliding member to drive the sliding member to axially displace.

3. A counter-lock mechanism as claimed in claim 2, wherein: the locking part is a first clamping groove arranged on the fixed plate, the sliding part is provided with a clamping protrusion movably inserted in the first clamping groove of the fixed plate, the limiting mechanism is a clamping groove formed between one screw mounting column of the handle shell and the inner wall of the handle shell, and the protruding column arranged on the sliding part is arranged in the clamping groove.

4. A counter lock mechanism as claimed in any one of claims 1 to 3, wherein: the rotary member is provided with a handle assembly, and the handle assembly is provided with a rotary member, wherein the rotary member is provided with a handle assembly, the handle assembly is provided with a handle, and the handle assembly is provided with a handle assembly.

5. A counter lock mechanism as claimed in claim 4, wherein: the part of the thumb wheel extending to the outside of the handle assembly is provided with a knurling structure.

6. A counter lock mechanism as claimed in claim 4, wherein: the handle assembly comprises a handle and a bottom plate, the bottom plate is fixedly assembled with the handle, and a through groove for the transmission shaft and the sliding piece to clamp and move convexly is formed in the bottom plate.

7. A counter lock mechanism as claimed in claim 4, wherein: the rotating piece is of a hollow structure, and the sliding piece is embedded in the hollow part of the rotating piece.

8. A counter-lock mechanism as claimed in claim 2, wherein: the convex column is a screw which is radially fixed on the sliding piece.

9. A counter lock mechanism as claimed in claim 4, wherein: the transmission shaft comprises a square outer shaft with a square outer part and an inner shaft rotatably connected in the outer shaft, wherein two ends of the outer shaft are respectively in linkage fit with handles of the inner handle assembly and the outer handle assembly, the inner shaft is positioned at the end part of the outer handle assembly and is connected with the lock core, and the inner shaft is positioned at the end part of the inner handle assembly and is in linkage fit with the rotating piece.