CN116044248A - An anti-theft door lock mechanism - Google Patents

Abstract

The present invention relates to the technical field of door body locks, and provides an anti-theft door lock mechanism, which includes a fixing seat and a lock cylinder part for fixing on the door body; the fixing seat is rotatably connected to a handle seat matched with the lock cylinder part; The handle base is provided with a handle shaft, and the fixed seat is correspondingly provided with a shaft hole which is rotatably socketed with the handle shaft; the shaft body of the handle shaft is provided with a ring groove close to its end; With clasp hardware. Thereby, the present invention restricts the axial movement of the handle shaft and prevents it from falling out by setting the ring groove on the handle shaft to engage the clasp. Since the clasp is facing the inner side of the door body, the handle seat cannot be removed from the outside of the door when the door body is closed, which improves safety.

Description

An anti-theft door lock mechanism

technical field

The invention belongs to the technical field of door body locks, in particular to an anti-theft door lock mechanism.

Background technique

The anti-theft performance of the refrigerator door lock is one of the important performances. Most of the current door lock structures adopt screws to fix the handle on the door body, and a decorative piece is assembled outside to cover the screws.

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

In summary, there are obviously inconveniences and defects in the actual use of the prior art, so it is necessary to improve it.

Contents of the invention

The technical problem solved by the invention is to prevent the handle from being opened from the outside of the door in a locked state, thereby improving safety. The axial movement of the handle shaft is restricted by setting the ring groove on the handle shaft to engage the clasp and prevent it from falling out. Since the clasp is facing the inner side of the door body, the handle seat cannot be removed from the outside of the door when the door body is closed, which improves safety.

In order to solve the above-mentioned problems, the present invention provides an anti-theft door lock mechanism, which includes a fixing seat and a lock cylinder for fixing on the door body; the fixing base is rotatably connected to a handle seat that cooperates with the lock cylinder;

The handle base is provided with a handle shaft, and the fixed seat is correspondingly provided with a shaft hole that is rotatably socketed with the handle shaft; the shaft body of the handle shaft is provided with a ring groove near its end; Attached with buckle hardware.

According to the anti-theft door lock mechanism of the present invention, the buckle has an annular hole, and a gap is provided in the annular hole.

According to the anti-theft door lock mechanism of the present invention, the buckle is a snap ring.

According to the anti-theft door lock mechanism of the present invention, at least three engaging protrusions are arranged in the annular hole of the clasp; The starting arc surfaces are all located on the same virtual circle.

According to the anti-theft door lock mechanism of the present invention, the buckle is provided with a reserved hole.

According to the anti-theft door lock mechanism of the present invention, the buckle part is also integrally formed with a pry ring fold.

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

According to the anti-theft door lock mechanism of the present invention, the handle seat is further provided with a handle.

According to the anti-theft door lock mechanism of the present invention, the handle base is provided with a lock hook, and the lock cylinder is correspondingly provided with a lock cylinder that cooperates with the lock hook.

According to the anti-theft door lock mechanism of the present invention, the two ends of the shaft hole of the fixing base are respectively sleeved with a shaft sleeve, and the shaft sleeve is provided with a relief hole for the handle shaft to pass through.

To sum up, the present invention restricts the axial movement of the handle shaft and prevents it from falling out by providing a ring groove on the handle shaft to engage the clasp. Since the clasp is directed towards the inner side of the door body, the handle seat cannot be removed from the outside of the door when the door body is closed, thereby improving safety.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic structural view of the handle seat in Fig. 1;

Fig. 3 is a schematic structural view of the lock column in Fig. 1;

Fig. 4 is an exploded view of the fixing seat in Fig. 1;

Fig. 5 is a schematic structural view of the buckle in Fig. 1;

In the figure: 1-Fixer seat, 11-Axis hole, 12-Axis kit, 13-Screw hole; 2-Handle seat, 21-Handle, 22-Lock hook, 23-Handle shaft, 231-Ring groove; 24-Lock Core hole; 3-lock column piece, 31-lock column; 4-buckle ring piece, 41-give way gap, 42-clamping protrusion, 43-reserved hole, 44-pry ring flange.

Detailed ways

Referring to Fig. 1, the present invention provides an anti-theft door lock mechanism, which includes a fixed seat 1 and a lock column member 3 for fixing on the door body; ;

Referring to Fig. 2, the handle base 2 is provided with a lock hook 22, and in conjunction with Fig. 3, the lock column member 3 is correspondingly provided with a lock column 31 which cooperates with the lock hook 22; better, the lock hook 22 and The handle base 2 is integrally formed by casting. Further, the handle 21 is also provided with a handle 21 for turning the handle 2 to realize unlocking and locking actions. The handle base 2 is also provided with a lock cylinder hole 24 for installing the lock cylinder.

The handle base 2 is provided with a handle shaft 23. Referring to FIG. 4, the fixed seat 1 is correspondingly provided with a shaft hole 11 which is rotatably socketed with the handle shaft 23; The ring groove 231; the ring groove 231 is clamped with a buckle 4;

After the handle shaft 23 is sleeved into the handle seat 2, the clasp 4 snaps into the ring groove 231 to limit the axial movement of the handle shaft 23 and prevent it from coming out. Since the buckle 4 faces the inner side of the door body, the handle seat 2 cannot be removed from the outside of the door when the door body is closed, which improves safety.

When the door body is closed and locked, even if the buckle 4 is removed inside the door body, the handle seat 2 cannot be removed because the lock hook 22 and the lock cylinder 31 are in a locking engagement state.

Referring to Fig. 5, the buckle 4 has an annular hole, and a gap 41 is provided on the annular hole; when rotating, a tool is used to elastically deform the buckle 4, and the buckle 4 is moved from the gap 41 Snap into the ring groove 231.

As an embodiment, the buckle part 4 of the present invention is a snap spring. Further, in order to facilitate the disassembly and replacement of the buckle 4, at least three snap-in protrusions 42 are provided in the annular hole of the buckle 4 of the present invention; arc-shaped surface, and the arc-shaped surfaces of each clamping protrusion 42 are located on the same virtual circumference; after the clasp 4 is installed, there is a certain space between it and the ring groove 231, which is convenient for disassembly;

Even better, the buckle 4 is provided with a reserved hole 43, which is convenient for using a tool to hook the buckle 4 during installation or disassembly.

Further, a prying ring flange 44 is integrally formed on the buckle part 4, which is convenient for using tools to pry it off during disassembly.

Preferably, the two ends of the shaft hole 11 of the fixed seat 1 are respectively sleeved with a shaft sleeve 12, and the shaft sleeve 12 is provided with a relief hole for the handle shaft 23 to pass through; The fixed seat 1 is in direct contact to increase wear resistance. Further, the shaft sleeve 12 is made of nylon, which has a lubricating effect and improves the smoothness of rotation. Further, the shaft sleeve 12 is provided with a plug-in strip, and the shaft hole 11 is correspondingly provided with a plug-in slot, so as to facilitate the cooperation and rotation of the two.

Even better, a number of screw holes 13 are provided on the fixing base 1 for passing through screws to fix it on the door body.

To sum up, the present invention provides an anti-theft door lock mechanism, which restricts the axial movement of the handle shaft and prevents it from falling out by providing a ring groove on the handle shaft to engage the buckle. Since the clasp is directed towards the inner side of the door body, the handle seat cannot be removed from the outside of the door when the door body is closed, thereby improving safety.

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding Changes and deformations should belong to the scope of protection of the appended claims of the present invention.

Claims (10)

1. An anti-theft door lock mechanism, characterized in that it comprises a fixed seat and a lock cylinder for fixing on the door body; the fixed seat is rotatably connected to a handle seat that cooperates with the lock cylinder; The handle base is provided with a handle shaft, and the fixed seat is correspondingly provided with a shaft hole that is rotatably socketed with the handle shaft; the shaft body of the handle shaft is provided with a ring groove near its end; Attached with buckle hardware. 2 . The anti-theft door lock mechanism according to claim 1 , wherein the buckle has an annular hole, and a gap is provided in the annular hole. 3 . 3. The anti-theft door lock mechanism according to claim 2, wherein the buckle is a snap ring. 4. The anti-theft door lock mechanism according to claim 2, wherein at least three engaging protrusions are arranged in the annular hole of the buckle member; arc-shaped surfaces, and the arc-shaped surfaces of each clamping protrusion are located on the same virtual circumference. 5 . The anti-theft door lock mechanism according to claim 4 , wherein a pry ring fold is formed integrally on the clasp. 6 . 6. The anti-theft door lock mechanism according to claim 5, wherein a reserved hole is opened on the buckle. 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 seat. 8. The anti-theft door lock mechanism according to claim 1, wherein a handle is further provided on the handle seat. 9 . The anti-theft door lock mechanism according to claim 1 , wherein a lock hook is provided on the handle seat, and a lock cylinder that cooperates with the lock hook is correspondingly provided on the lock cylinder member. 10. The anti-theft door lock mechanism according to any one of claims 1 to 9, characterized in that, the two ends of the shaft hole of the fixing seat are respectively fitted with a shaft sleeve, and a shaft sleeve is provided on the shaft sleeve for the handle shaft to pass through. over the give way hole.

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