A pry-proof structure

Abstract

The present invention relates to an anti-pry structure, comprising a gusset plate, a protective box and an anti-pry mechanism, wherein the protective box is fixedly connected to the rear side of the gusset plate, and a lock hole for an oblique tongue to extend into the protective box is arranged on the gusset plate; the anti-pry mechanism comprises a swing arm and a protruding piece, wherein the swing arm is installed in the protective box in a manner that the root and the end of the swing arm can swing forward and backward around the middle, and the protruding piece is arranged in the protective box in a manner that it can slide forward and backward, and an avoidance hole for the protruding piece to extend forward from the gusset plate is arranged on the gusset plate, and a toggle groove is arranged on the protruding piece, and the end of the swing arm extends into the toggle groove, and a toggle structure is arranged at the root of the swing arm, and the toggle structure is used for driving the oblique tongue to drive the root of the swing arm to swing backward, and the end of the swing arm swings forward to toggle the protruding piece to extend forward from the gusset plate. The present invention can realize the anti-pry function even when the door is not locked by reasonably arranging the anti-pry structure, thereby improving the safety of the door itself.

Description

Technical Field

[0001] The invention relates to a door, in particular to an anti-pry structure. Background Art

[0002] The anti-theft effect of existing anti-theft doors mainly comes from the main lock tongue of the door lock, because after the main lock tongue is extended, the oblique tongue cannot be pried open or popped open by tools. However, when the smart door lock is not installed, it is easy to forget to lock the anti-theft door after entering or leaving the door, which makes the anti-theft door easy to be pried open, thus greatly reducing the security of the anti-theft door itself. Summary of the invention

[0003] The purpose of the present invention is to provide an anti-pry structure, which is beneficial to improving the anti-pry performance of a door.

[0004] The anti-pry structure described in the present invention includes a buckle plate, a protective box and an anti-pry mechanism, the protective box is fixedly connected to the rear side of the buckle plate, and the buckle plate is provided with a lock hole for an inclined tongue to extend into the protective box; the anti-pry mechanism includes a swing arm and a protruding piece, the swing arm is installed in the protective box in a manner that the root and the end can swing back and forth around the middle, the protruding piece is arranged in the protective box in a manner that it can slide back and forth, the buckle plate is provided with a avoidance hole for the protruding piece to extend forward from the buckle plate, the protruding piece is provided with a toggle groove, the end of the swing arm extends into the toggle groove, the root of the swing arm is provided with a toggle structure, the toggle structure is used for the inclined tongue to drive the root of the swing arm to swing backward, and the end of the swing arm swings forward to toggle the protruding piece to extend forward from the buckle plate.

[0005] Optionally, the anti-pry mechanism includes two swing arms and two protruding pieces, and the two protruding pieces are both provided with the toggle grooves. The ends of the two swing arms respectively extend into the two toggle grooves. Viewed from front to back, the two swing arms are located between the two protruding pieces.

[0006] Optionally, a slide groove is provided on the left side wall and the right side wall of the protective box, and the two protruding members are respectively connected to the two slide grooves.

[0007] Optionally, it also includes a hinge shaft arranged along the central axis in the up and down directions, the hinge shaft hinges the roots of the two swing arms together, and a limiting hole that gap fits with the lower end of the hinge shaft is provided on the lower side wall of the protective box, and the upper end of the hinge shaft can swing back and forth.

[0008] Optionally, the hinge shaft is a bolt, a nut is connected to the bolt, and the roots of the two swing arms are located between the bolt head of the bolt and the nut.

[0009] Optionally, a return spring is arranged in the protective box, and the return spring is used to provide a forward return force to the root of the swing arm.

[0010] Optionally, a spring mounting pin extending forward is fixedly connected to the rear side wall of the protective box, and the return spring is sleeved on the spring mounting pin. When the return spring is in a natural state, the front part of the return spring extends out of the spring mounting pin.

[0011] Optionally, a support arm is provided in the protective box, and a strip-shaped limiting hole extending in the front-to-back direction is provided on the support arm. The swing arm passes through the strip-shaped limiting hole, and the middle part of the swing arm cooperates with the strip-shaped limiting hole. The length of the strip-shaped limiting hole in the front-to-back direction is greater than the width of the middle part of the swing arm in the front-to-back direction.

[0012] Optionally, the protruding member is a plate-shaped member.

[0013] The present invention can realize the anti-pry function even when the door is not locked by reasonably arranging the anti-pry structure, thereby improving the safety of the door itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the anti-pry structure described in the specific implementation manner;

[0015] Figure 2 It is a structural schematic diagram of the protective box and the anti-pry mechanism described in the specific implementation manner;

[0016] Figure 3 for Figure 2 AA section view in;

[0017] Figure 4 for Figure 2 BB section view in;

[0018] Figure 5 It is a schematic diagram of the structure of the protruding member described in the specific implementation manner.

[0019] In the figure: 1 - buckle plate; 2 - protective box; 3 - anti-pry mechanism;

[0020] 11—lock hole; 12—avoidance hole;

[0021] 21—slideway; 22—support arm; 23—strip-shaped limiting hole; 24—spring mounting pin; 25—reset spring;

[0022] 31—bolt; 32—nut; 33—swing arm; 34—extending piece; 35—sliding slot. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] like Figures 1 to 5 The anti-pry structure shown in the figure comprises a pinch plate 1, a protective box 2 and an anti-pry mechanism 3. The protective box 2 is fixedly connected to the rear side of the pinch plate 1 by means of clamping or welding. The pinch plate 1 is provided with a lock hole 11 for the inclined tongue of the door lock to extend into the protective box 2; the anti-pry mechanism 3 comprises a swing arm 33 and a protruding member 34. The swing arm 33 is installed in the protective box 2 in a manner that the root and the end can swing forward and backward around the middle part. The protruding member 34 is arranged in the protective box 2 in a manner that it can slide forward and backward. The pinch plate 1 is provided with an avoidance hole 12 for the protruding member 34 to extend forward from the pinch plate 1. A toggle groove 35 is provided on the protruding piece 34, and the end of the swing arm 33 extends into the toggle groove 35. A toggle structure is provided at the root of the swing arm 33. The toggle structure is used for driving the inclined tongue to drive the root of the swing arm 33 to swing backward. The toggle structure can be a part on the root of the swing arm 33, and the root of the swing arm 33 can also be a component or structure connected to the root of the swing arm 33. The end of the swing arm 33 swings forward to toggle the protruding piece 34 to extend forward from the buckle plate 1. The part of the protruding piece 34 extending from the buckle plate 1 is used to cover the inclined tongue to prevent prying.

[0025] In this embodiment, the anti-pry mechanism 3 includes two swing arms 33 and two protruding pieces 34. The two protruding pieces 34 are each provided with a toggle groove 35. The ends of the two swing arms 33 extend into the two toggle grooves 35 respectively. When viewed from the front to the back, the two swing arms 33 are located between the two protruding pieces 34. The parts of the two protruding pieces 34 extending out of the buckle plate 1 are respectively blocked on the left and right sides of the inclined tongue.

[0026] In this embodiment, a slide groove 21 is provided on the left side wall and the right side wall of the protective box 2 , and two protruding members 34 are respectively connected to the two slide grooves 21 , and the protruding members 34 can slide forward and backward along the slide grooves 21 .

[0027] In this embodiment, it also includes an articulated shaft arranged along the central axis in the up and down directions, and the articulated shaft hinges the roots of the two swing arms 33 together. A limiting hole that is clearance-matched with the lower end of the articulated shaft is provided on the lower side wall of the protective box 2, and the limiting hole is a blind hole. The upper end of the articulated shaft can swing back and forth. The articulated shaft is provided so that the two protruding parts 34 can be linked, and the limiting hole can limit the movement trajectory of the articulated shaft. The articulated shaft can be used as a toggle structure. The articulated shaft is also convenient for arranging the reset spring 25.

[0028] In this embodiment, the hinge shaft is a bolt 31 , a nut 32 is connected to the bolt 31 , and the roots of the two swing arms 33 are located between the bolt 31 head and the nut 32 of the bolt 31 .

[0029] In this embodiment, a return spring 25 is provided in the protective box 2, and the return spring 25 is used to provide a forward return force to the root of the swing arm 33. In this embodiment, the return spring 25 is arranged between the bolt 31 and the rear side wall of the protective box 2. After the oblique tongue exits the protective box 2, the return spring 25 pushes the bolt 31 forward, indirectly providing a forward return force to the root of the two swing arms 33, driving the two swing arms 33 to return.

[0030] In this embodiment, a spring mounting pin 24 extending forward is fixedly connected to the rear side wall of the protective box 2, and a return spring 25 is sleeved on the spring mounting pin 24. When the return spring 25 is in a natural state, the front part of the return spring 25 extends out of the spring mounting pin 24.

[0031] In this embodiment, a support arm 22 is provided in the protective box 2, and a strip-shaped limiting hole 23 extending in the front-to-back direction is provided on the support arm 22, and a swing arm 33 passes through the strip-shaped limiting hole 23, and the middle part of the swing arm 33 cooperates with the strip-shaped limiting hole 23; the length of the strip-shaped limiting hole 23 in the front-to-back direction is greater than the width of the middle part of the swing arm 33 in the front-to-back direction, so that the swing arm 33 can slide left and right and swing horizontally. In a specific implementation, two support arms 22 extending forward are fixedly connected to the rear side wall of the protective box 2, and the front ends of the two support arms 22 are both provided with strip-shaped limiting holes 23, and the two swing arms 33 cooperate with the two strip-shaped limiting holes 23 respectively.

[0032] In this embodiment, the protruding member 34 is a plate-shaped member.

[0033] With the above-mentioned anti-pry structure, when closing the door, the oblique tongue of the door lock extends into the protective box 2, directly or indirectly pushing the roots of the two swing arms 33 to swing backward, thereby driving the ends of the two swing arms 33 to swing forward, and the ends of the two swing arms 33 push the two protruding pieces 34 forward to extend forward from the buckle plate 1, and the two protruding pieces 34 are pressed forward against the side of the door leaf, forming a shielding structure on the left and right sides of the oblique tongue of the door lock, which can improve the anti-pry performance. When opening the door, the oblique tongue of the door lock exits the protective box 2, and under the action of the reset spring 25, the bolt swings forward, causing the roots of the two swing arms 33 to swing forward and reset, thereby driving the ends of the two swing arms 33 to swing backward, and the ends of the two swing arms 33 push the two protruding pieces 34 backward to reset.

[0034] In the description of the present invention, it should be understood that the directions indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the attached Figure 1-4 The orientations represented by the coordinate system are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

Claims

1. A pry-proof structure, characterized in that: The invention comprises a gusset plate, a protective box and an anti-pry mechanism, wherein the protective box is fixedly connected to the rear side of the gusset plate, and the gusset plate is provided with a lock hole for allowing the oblique tongue to extend into the protective box; the anti-pry mechanism comprises a swing arm and a protruding piece, wherein the swing arm is installed in the protective box in a manner that the root and the end can swing back and forth around the middle, and the protruding piece is arranged in the protective box in a manner that it can slide back and forth, and the gusset plate is provided with an avoidance hole for allowing the protruding piece to extend forward from the gusset plate, and the protruding piece is provided with a toggle groove, and the end of the swing arm extends into the toggle groove, and the root of the swing arm is provided with a toggle structure, and the toggle structure is used for driving the oblique tongue to drive the root of the swing arm to swing backward, and the end of the swing arm swings forward to toggle the protruding piece to extend forward from the Buckle plate; the anti-pry mechanism includes two swing arms and two protruding pieces, the two protruding pieces are each provided with the toggle grooves, the ends of the two swing arms are respectively extended into the two toggle grooves, and viewed from front to back, the two swing arms are located between the two protruding pieces; the left and right walls of the protective box are each provided with sliding grooves, and the two protruding pieces are respectively connected to the two sliding grooves; it also includes a hinge shaft arranged along the up and down directions of the central axis, the hinge shaft hinges the roots of the two swing arms together, and the lower side wall of the protective box is provided with a limiting hole which is gap-matched with the lower end of the hinge shaft, and the upper end of the hinge shaft can swing back and forth; a reset spring is arranged in the protective box, and the reset spring is used to provide a forward reset force to the root of the swing arm.

2. The anti-pry structure according to claim 1, characterized in that: The hinge shaft is a bolt, a nut is connected to the bolt, and the roots of the two swing arms are located between the bolt head of the bolt and the nut.

3. The anti-pry structure according to claim 1, characterized in that: A spring mounting pin extending forward is fixedly connected to the rear side wall of the protective box, and the return spring is sleeved on the spring mounting pin. When the return spring is in a natural state, the front part of the return spring extends out of the spring mounting pin.

4. The anti-pry structure according to claim 1, characterized in that: A support arm is provided in the protective box, and a strip-shaped limiting hole extending in the front-to-back direction is provided on the support arm. The swing arm passes through the strip-shaped limiting hole, and the middle part of the swing arm cooperates with the strip-shaped limiting hole. The length of the strip-shaped limiting hole in the front-to-back direction is greater than the width of the middle part of the swing arm in the front-to-back direction.

5. The anti-pry structure according to claim 1, characterized in that: The protruding member is a plate-shaped member.

Images