Anti-theft door

Abstract

The utility model discloses an anti-theft door. An anti-theft door comprises a door plate and a cat eye unit arranged on the door plate, a through hole is formed in the door plate, and a plurality of sliding groove sets are formed in the inner wall of the through hole. The sliding groove set comprises a first sliding groove consistent with the forming direction of the through hole and a second sliding groove communicating with the first sliding groove and circumferentially formed in the inner wall of the through hole. According to the utility model, the first sliding chute and the second sliding chute which is communicated with the first sliding chute and is circumferentially arranged on the inner wall of the through hole are arranged; due to the fact that the protruding block is arranged outside the inner pipe, when the inner pipe is pushed to drive the outer pipe to be pushed to the fixing block towards the penetrating hole, the inner pipe is rotationally connected with the outer pipe, the protruding block can enter the second sliding groove to be limited by rotating the inner pipe, the cat eye is convenient to disassemble and assemble quickly, the structure is simple, and use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of security door technology, and in particular to a security door. Background Technology

[0002] Currently, a peephole is a device used to observe the situation outside the door from inside the door, and peepholes are generally installed on the door.

[0003] In existing technology, peepholes are usually installed in the through hole of a door, pushed from the inside out until fully in place. This makes them inconvenient to install and remove. When a thief comes from the outside, they can easily damage the peephole, poke it out, and use tools to open the door through the through hole, which reduces home security.

[0004] This application is submitted by the applicant to address the need for quick disassembly and assembly while effectively protecting the peephole from damage. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing a security door with a peephole structure that has anti-theft function. The lens part of the peephole structure is easy to disassemble for convenient cleaning or replacement by the user.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A security door includes a door panel and a peephole unit disposed on the door panel, characterized in that: a through hole is provided on the door panel, and a plurality of sets of sliding grooves are provided on the inner wall of the through hole, the sliding groove set including a first sliding groove consistent with the opening direction of the through hole and a second sliding groove that communicates with the first sliding groove and is arranged circumferentially on the inner wall of the through hole;

[0008] The cat's eye unit includes an outer tube and an inner tube with one end inserted into the outer tube and rotatably connected to the outer tube. The inner tube is provided with a number of protrusions that cooperate with the slide groove assembly at the part outside the outer tube.

[0009] In the above scheme, preferably, a circular hole is opened on the door panel, the circular hole is located at the front end of the through hole, and an annular block is disposed on the circular hole.

[0010] In the above scheme, preferably, the inner diameter of the annular block is smaller than the diameter of the through hole, and its outer diameter is larger than the diameter of the through hole.

[0011] In the above scheme, preferably, an annular sleeve is provided at the gap between the inner tube and the first slide groove, and the annular sleeve is fitted from the rear end of the inner tube to the front at the gap between the inner tube and the first slide groove.

[0012] In the above scheme, preferably, the annular sleeve is a flexible component.

[0013] In the above scheme, preferably, the inner tube includes a concave lens and a convex lens, the concave lens being located at the front end of the inner tube and the convex lens being located inside the inner tube.

[0014] In the above scheme, preferably, the rear end of the inner tube is provided with an outer cover that cooperates to open or close.

[0015] The beneficial effects of this utility model are as follows: This utility model uses a first sliding groove and a second sliding groove that is connected to the first sliding groove and arranged circumferentially on the inner wall of the through hole; since the inner tube is provided with a protrusion on the outside, when the inner tube is pushed to drive the outer tube into the through hole to the fixing block, since the inner tube and the outer tube are rotatably connected, rotating the inner tube can allow the protrusion to enter the second sliding groove limit position, which facilitates the quick disassembly of the cat eye, so as to facilitate the user's subsequent cleaning or replacement. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the present invention.

[0017] Figure 2 for Figure 1 Enlarged diagram of point A1 in the middle.

[0018] Figure 3 This is a schematic diagram of the cooperation between the protrusion and the second groove structure of this utility model.

[0019] Figure 4 for Figure 3 Enlarged diagram of section B1.

[0020] Figure 5 This is a cross-sectional view of the present invention.

[0021] Figure 6 This is a schematic diagram showing the positions of the slide groove assembly and the circular hole of this utility model.

[0022] Figure 7 This is a schematic diagram of the outer side of the door panel of this utility model. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0024] See Figures 1-7 A security door includes a door panel 1 and a peephole unit disposed on the door panel 1. A through hole 2 is provided on the door panel. Several sets of sliding grooves are provided on the inner wall of the through hole 2. The sliding grooves include a first sliding groove 101 that is consistent with the opening direction of the through hole 2 and a second sliding groove 102 that is connected to the first sliding groove 101 and arranged circumferentially on the inner wall of the through hole 2.

[0025] The peephole unit includes an outer tube 4 and an inner tube 3, one end of which is inserted into the outer tube 4 and rotatably connected to the outer tube 4. The inner tube 3 is provided with several protrusions 5 that cooperate with the sliding groove assembly at the part outside the outer tube 4. When the inner tube 3 and the outer tube 4 are rotatably connected, the outer tube is pushed into the through hole by pushing the inner tube 3 to realize the installation of the peephole unit on the through hole 2.

[0026] Furthermore, to prevent someone from damaging the peephole unit outside the door panel 1 when it can be fully inserted into the through hole 2, such as... Figure 7 As shown, a circular hole 6 is also opened on the door panel 1. The circular hole 6 is located at the front end of the through hole 2. An annular block 7 is arranged on the circular hole 6. When the door panel 1 is made of iron, the annular block 7 is made of iron and can be fixed to the circular hole 6 of the door panel 1 by welding. When the door panel 1 is made of wood, the annular block 7 is made of wood and can be fixed to the circular hole 6 of the door panel 1 by screws. In order to provide an aesthetically pleasing appearance on the outside of the door panel 1, the annular block 7 is equipped with a merchant logo or pattern, and the color of the annular block 7 matches the color of the door panel. The setting of the annular block 7 can protect the outer tube 4 from being directly damaged on the outside of the door panel 1. The setting of the annular block 7 does not affect the observation of the peephole unit from the inside to the outside.

[0027] Specifically, several protrusions 5 on the inner tube 3 reach the second slide groove 102 through the cooperating first slide groove 101. To prevent damage caused by someone pushing the peephole unit from the outside to the inside of the door panel 1, when the peephole unit is fully inserted into the through hole 2, preferably, the second slide groove 102 is set as an annular groove. Through the rotational connection between the outer tube 4 and the inner tube 3, when the peephole unit is pushed into the through hole 2, several protrusions 5 on the inner tube 3 reach the second slide groove 102 through the first slide groove 101. Rotating the inner tube 3 causes several protrusions 5 on the inner tube 3 to enter the annular groove. This provides a limit for the peephole unit in the through hole 2, preventing it from falling off the door panel 1 when pushed out. This can protect the peephole unit and allow for quick installation and removal of the peephole unit.

[0028] Furthermore, after the peephole unit is installed, the gap between the inner tube 3 and the through hole 2 is particularly noticeable when viewed from inside the door panel 1, affecting the overall appearance. An annular sleeve 12 that fits the gap between the inner tube 3 and the through hole 2 is provided in the gap. The annular sleeve 12 is fitted from the rear end of the inner tube 3 to the front in the gap between the inner tube 3 and the first sliding groove 101. After the annular sleeve 12 is placed, it is flush with the door panel 1. The material of the annular sleeve 12 is a flexible part, which can be easily put on and taken off without affecting the overall appearance of the inside of the door panel 1.

[0029] In this embodiment, in order to enable the view outside the door panel 1 through the peephole unit, the inner tube 3 includes a concave lens 9 and a convex lens 10. The concave lens 9 is located at the front end of the inner tube 3, and the convex lens 10 is located inside the inner tube 3. When looking out from the inside of the door panel 1, the focal length of the concave lens 9 is extremely short. The concave lens 9 images the people or objects outside as a reduced upright virtual image. This image falls exactly within the first focal point of the convex lens 10. The convex lens 10 acts as a magnifying glass, ultimately resulting in a relatively magnified upright virtual image. The rear end of the inner tube is provided with an outer cover 11 that is opened or closed in conjunction with it. When it is necessary to observe the view outside the door panel, the outer cover 11 is opened, and the outer cover 11 is closed after the observation is completed.

[0030] Working principle: When the peephole unit needs to be installed, push the peephole unit into the through hole 2. When the peephole unit is fully inserted into the through hole 2, the protrusion 5 on the inner tube 3 will pass through the first slide groove 101 to the second slide groove 102. Since the inner tube 3 and the outer tube 4 are rotatably connected, rotating the inner tube 3 will cause the protrusion 5 on the inner tube 3 to enter the second slide groove 102 for limiting. When the peephole unit needs to be removed, rotate the inner tube 3 to cause the protrusion 5 on the inner tube to enter from the second slide groove 102 into the first slide groove 101 and be pulled out for removal.

[0031] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A security door, comprising a door panel (1) and a peephole unit disposed on the door panel, characterized in that: The door panel (1) is provided with a through hole (2), and the inner wall of the through hole (2) is provided with a number of sliding groove groups. The sliding groove group includes a first sliding groove (101) that is consistent with the opening direction of the through hole (2) and a second sliding groove (102) that is connected to the first sliding groove (101) and arranged circumferentially on the inner wall of the through hole (2). The cat-eye unit includes an outer tube (4) and an inner tube (3) with one end inserted into the outer tube (4) and rotatably connected to the outer tube (4). The inner tube (3) is provided with a number of protrusions (5) that cooperate with the slide groove assembly at the part outside the outer tube (4).

2. The anti-theft door according to claim 1, characterized in that: The door panel (1) has a circular hole (6) located at the front end of the through hole (2), and an annular block (7) is disposed on the circular hole (6).

3. A security door according to claim 2, characterized in that: The inner diameter of the annular block (7) is smaller than the diameter of the through hole (2), and its outer diameter is larger than the diameter of the through hole (2).

4. A security door according to claim 1, characterized in that: An annular sleeve (12) is provided in the gap between the inner tube (3) and the first slide groove (101). The annular sleeve (12) is fitted from the rear end of the inner tube (3) to the front in the gap between the inner tube (3) and the first slide groove (101).

5. A security door according to claim 4, characterized in that: The annular sleeve (12) is a flexible component.

6. A security door according to claim 1, characterized in that: The inner tube (3) includes a concave lens (9) and a convex lens (10). The concave lens (9) is located at the front end of the inner tube (3), and the convex lens (10) is located inside the inner tube (3).

7. A security door according to claim 1, characterized in that: The inner tube (3) is provided with an outer cover (11) at its rear end, which is used to open or close.

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