CN116044248A

CN116044248A - Anti-theft door lock mechanism

Info

Publication number: CN116044248A
Application number: CN202211071279.3A
Authority: CN
Inventors: 白文涛; 蒋尚君; 魏阜勋; 由尚; 李晓平; 邓刚; 万文力
Original assignee: Qingdao Aucma Biomedical Co Ltd
Current assignee: Qingdao Aucma Biomedical Co Ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2023-05-02

Abstract

The invention relates to the technical field of door locks, and provides a burglarproof door lock mechanism which comprises a fixed seat and a lock column piece, wherein the fixed seat and the lock column piece are used for being fixed on a door body; the fixed seat is rotationally connected with a handle seat matched with the lock column part; the handle seat is provided with a handle shaft, and the fixed seat is correspondingly provided with a shaft hole which is in rotary sleeving connection with the handle shaft; the shaft body of the handle shaft is provided with a ring groove close to the end part of the handle shaft; the ring groove is clamped with a buckle ring piece. Therefore, the ring groove clamping buckle piece is arranged on the handle shaft, so that the axial movement of the handle shaft is limited, and the handle shaft is prevented from falling off. Since the clasp member faces the inside of the door body, the handle seat cannot be detached from the outside of the door in the closed state of the door body, and safety is improved.

Description

Anti-theft door lock mechanism

Technical Field

The invention belongs to the technical field of door locks, and particularly relates to a burglarproof door lock mechanism.

Background

Theft protection of refrigerator door locks is one of the important properties. The prior door lock structure mostly adopts a screw to fix a handle on a door body, and a decoration piece is assembled outside the door lock structure for shielding the screw.

Although the fixing reliability of the handle to the door body is high by directly using the screw, the handle can be detached from the outside of the door by using a tool in a locked state, and the anti-theft effect is poor.

In summary, it is clear that the prior art has inconvenience and defects in practical use, so that improvement is needed.

Disclosure of Invention

The technical problems solved by the invention are as follows: the handle is prevented from being opened from the outside of the door in a locked state, and safety is improved. The ring groove clamping buckle part is arranged on the handle shaft to limit the axial movement of the handle shaft and prevent the handle shaft from falling off. Since the clasp member faces the inside of the door body, the handle seat cannot be detached from the outside of the door in the closed state of the door body, and safety is improved.

In order to solve the above problems, the present invention provides a burglarproof door lock mechanism, comprising a fixing seat and a lock column member, wherein the fixing seat and the lock column member are used for being fixed on a door body; the fixed seat is rotationally connected with a handle seat matched with the lock column part;

the handle seat is provided with a handle shaft, and the fixed seat is correspondingly provided with a shaft hole which is in rotary sleeving connection with the handle shaft; the shaft body of the handle shaft is provided with a ring groove close to the end part of the handle shaft; the ring groove is clamped with a buckle ring piece.

According to the anti-theft door lock mechanism, the buckle ring piece is provided with the annular hole, and the annular hole is provided with the abdication notch.

According to the antitheft door lock mechanism of the invention, the clasp member is a snap spring.

According to the anti-theft door lock mechanism of the invention, at least three clamping bulges are arranged in the annular hole of the buckle ring piece; the clamping bulges are provided with arc-shaped surfaces attached to the annular grooves, and the arc-shaped surfaces of the clamping bulges are all positioned on the same virtual circumference.

According to the antitheft door lock mechanism of the invention, the retaining ring member is provided with the preformed hole.

According to the anti-theft door lock mechanism, the clasp part is also integrally formed with the prying ring folded edge.

According to the anti-theft door lock mechanism, the handle seat is also provided with a lock cylinder hole for installing a lock cylinder.

According to the anti-theft door lock mechanism, the handle seat is also provided with a handle.

According to the anti-theft door lock mechanism, the handle seat is provided with the lock hook, and the lock column piece is correspondingly provided with the lock column matched with the lock hook.

According to the anti-theft door lock mechanism, two ends of the shaft hole of the fixing seat are respectively sleeved with a shaft sleeve, and the shaft sleeve is provided with a yielding hole for passing through a handle shaft.

In summary, the present invention prevents the removal of the handle shaft by providing the ring groove engaging buckle member on the handle shaft to restrict the axial movement of the handle shaft. Since the clasp member faces the inside of the door body, the handle seat cannot be detached from the outside of the door in the closed state of the door body, and safety is improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic view of the handle base of FIG. 1;

FIG. 3 is a schematic view of the cylinder of FIG. 1;

FIG. 4 is an exploded view of the anchor block of FIG. 1;

fig. 5 is a schematic view of the structure of the grommet member in fig. 1;

in the figure: 1-a fixed seat, 11-a shaft hole, 12-a shaft sleeve piece and 13-a screw hole; 2-handle seat, 21-handle, 22-latch hook, 23-handle shaft and 231-ring groove; 24-a lock cylinder hole; 3-lock cylinder piece, 31-lock cylinder; 4-snap ring parts, 41-abdication notches, 42-clamping protrusions, 43-reserved holes and 44-prying ring flanging.

Detailed Description

Referring to fig. 1, the invention provides a burglarproof door lock mechanism, which comprises a fixed seat 1 and a lock column member 3, wherein the fixed seat 1 and the lock column member 3 are used for being fixed on a door body; the fixed seat 1 is rotationally connected with a handle seat 2 matched with the lock cylinder piece 3;

referring to fig. 2, the handle seat 2 is provided with a latch hook 22, and, in combination with fig. 3, the latch column member 3 is correspondingly provided with a latch column 31 matched with the latch hook 22; preferably, the latch hook 22 and the handle seat 2 are integrally formed by casting. Further, the handle seat 2 is further provided with a handle 21 for screwing the handle seat 2 to realize unlocking and locking actions. The handle seat 2 is also provided with a lock cylinder hole 24 for installing a lock cylinder.

The handle seat 2 is provided with a handle shaft 23, and the fixed seat 1 is correspondingly provided with a shaft hole 11 which is rotationally sleeved with the handle shaft 23 in a sleeved mode in combination with fig. 4; the shaft body of the handle shaft 23 is provided with a ring groove 231 near the end part thereof; the ring groove 231 is clamped with a buckle part 4;

after the handle shaft 23 is fitted into the handle holder 2, the clasp member 4 is engaged with the ring groove 231 to restrict the axial movement of the handle shaft 23 and prevent it from coming out. Since the clasp member 4 faces the door inside direction, the handle seat 2 cannot be removed from the outside of the door in the state where the door is closed, and safety is improved.

Even if the grommet member 4 is removed from the inside of the door body in a state where the door body is closed and locked, the handle holder 2 cannot be removed because the lock hook 22 and the lock cylinder 31 are in a locked engagement state.

Referring to fig. 5, the clasp part 4 has an annular hole with a relief notch 41; at the time of turning, the clasp member 4 is elastically deformed by a tool, and the clasp member 4 is engaged into the annular groove 231 from the relief notch 41.

As an example, the grommet member 4 of the present invention is a clip spring. Further, in order to facilitate the disassembly and replacement of the clasp assembly 4, the annular hole of the clasp assembly 4 of the present invention is provided with at least three snap projections 42; the clamping protrusions 42 are provided with arc-shaped surfaces attached to the annular grooves 231, and the arc-shaped surfaces of the clamping protrusions 42 are all located on the same virtual circumference; a certain space is reserved between the ring groove 231 and the buckle piece 4 after being installed, so that the disassembly is convenient;

preferably, the clasp part 4 is provided with a preformed hole 43 for hooking the clasp part 4 by a tool during installation or removal.

Further, the clasp part 4 is also integrally formed with a prying ring flange 44, which is convenient to pry down by using a tool during disassembly.

Preferably, two ends of the shaft hole 11 of the fixed seat 1 are respectively sleeved with a shaft sleeve member 12, and the shaft sleeve member 12 is provided with a yielding hole for passing through a handle shaft 23; the handle shaft 23 is sleeved on the shaft sleeve 12, so that the handle shaft is prevented from being in direct contact with the fixed seat 1, and the wear resistance is improved. Further, the sleeve member 12 is made of nylon, and has a lubrication function, thereby improving the smoothness of rotation. Furthermore, the shaft sleeve member 12 is provided with a plugging strip, and the shaft hole 11 is correspondingly provided with a plugging groove, so that the shaft sleeve member and the plugging groove can be conveniently matched and rotated.

Preferably, the fixing base 1 is provided with a plurality of screw holes 13 for penetrating screws to fix the fixing base on the door body.

In summary, the present invention provides a burglarproof door lock mechanism, in which a ring groove is provided on a handle shaft to engage with a buckle member, so as to limit the axial movement of the handle shaft and prevent the shaft from falling out. Since the clasp member faces the inside of the door body, the handle seat cannot be detached from the outside of the door in the closed state of the door body, and safety is improved.

Of course, the present invention is capable of other various embodiments and its several details are capable of modification and variation in light of the present invention, as will be apparent to those skilled in the art, without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A kind of theft-proof door lock mechanism, characterized by, including fixing base and lock column member used for fixing on door body; the fixed seat is rotationally connected with a handle seat matched with the lock column part;

2. The anti-theft door lock mechanism according to claim 1, wherein the grommet member has an annular hole with a relief notch formed therein.

3. The antitheft door lock mechanism of claim 2 wherein said clasp member is a snap spring.

4. The antitheft door lock mechanism of claim 2 wherein said annular hole of said grommet member has at least three snap-in projections; the clamping bulges are provided with arc-shaped surfaces attached to the annular grooves, and the arc-shaped surfaces of the clamping bulges are all positioned on the same virtual circumference.

5. The anti-theft door lock mechanism according to claim 4, wherein said clasp member is further integrally formed with a pry ring flange.

6. The anti-theft door lock mechanism according to claim 5, wherein the grommet member is provided with a preformed hole.

7. The anti-theft door lock mechanism according to claim 1, wherein a lock cylinder hole for installing a lock cylinder is further provided on the handle base.

8. The anti-theft door lock mechanism according to claim 1, wherein a handle is further provided on the handle base.

9. The anti-theft door lock mechanism according to claim 1, wherein the handle seat is provided with a lock hook, and the lock column member is correspondingly provided with a lock column matched with the lock hook.

10. The anti-theft door lock mechanism according to any one of claims 1 to 9, wherein two ends of the shaft hole of the fixing seat are respectively sleeved with a shaft sleeve, and the shaft sleeve is provided with a yielding hole for passing through the handle shaft.