Anti-theft door with multi-layer sealing structure

Abstract

The utility model discloses a security door with a multilayer sealing structure, which comprises a door frame and a door leaf, the door leaf comprises a middle frame, a door leaf inner frame and a door leaf outer frame, and a pump body fixedly arranged in the middle frame can control a fixing bolt cylinder body through a connecting pipe to eject a fixing bolt out to be connected with a bolt hole of the door frame so as to fix the position between the door frame and the middle frame. The pump body can control the inner frame cylinder body through the connecting pipe to enable the door leaf inner frame to be away from the middle frame and extrude the first sealing strip, and the pump body can control the outer frame cylinder body through the connecting pipe to enable the door leaf outer frame to be close to the middle frame and extrude the second sealing strip. According to the technical scheme, the middle frame 3 and the door frame 1 are controlled to be locked and the door leaf inner frame 6 and the door leaf outer frame 7 are controlled to be pressed and sealed with the door frame 1 respectively by controlling the cylinders through the pump body, and the anti-theft door of the multi-layer sealing structure solves the problem that an existing anti-theft door is only passively sealed through a sealing strip, so that the sealing effect is poor.

Description

Technical Field

[0001] The utility model relates to a security door, in particular to a security door with a multi-layer sealing structure. Background Art

[0002] A rubber sealing strip is installed around between the door frame and the door leaf of the security door. When the door is closed, the sealing strip is compressed, so as to fill the gap between the door leaf and the door frame, achieving a good sealing effect. Rubber materials usually have good elasticity and durability, and can effectively prevent the entry of air, water and dust. However, the sealing effect of the rubber sealing strip may be poor due to temperature changes and installation accuracy. Content of the Utility Model

[0003] The utility model discloses a security door with a multi-layer sealing structure, including: the door frame is connected with the door leaf, and the door leaf includes: a middle frame, an inner door frame of the door leaf, and an outer door frame of the door leaf. A pump body fixedly arranged in the middle frame can control a fixed bolt cylinder body through a connecting pipe to eject a fixed bolt to be connected with a bolt hole of the door frame so as to fix the position between the door frame and the middle frame. The pump body can control an inner frame cylinder body through the connecting pipe to move the inner door frame of the door leaf away from the middle frame and extrude a first sealing strip. The pump body can control an outer frame cylinder body through the connecting pipe to move the outer door frame of the door leaf close to the middle frame and extrude a second sealing strip. The technical solution of the utility model controls each cylinder body through the pump body to control the locking between the middle frame 3 and the door frame 1 and the pressing seals between the inner door frame 6 and the outer door frame 7 of the door leaf and the door frame 1 respectively, providing a security door with a multi-layer sealing structure and solving the problem that the existing security door only has passive sealing of the sealing strip, resulting in poor sealing effect.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] A security door with a multi-layer sealing structure, including: the door frame is connected with the door leaf, and the door leaf includes: a middle frame, an inner door frame of the door leaf, and an outer door frame of the door leaf. A pump body fixedly arranged in the middle frame can control a fixed bolt cylinder body through a connecting pipe to eject a fixed bolt to be connected with a bolt hole of the door frame so as to fix the position between the door frame and the middle frame. The pump body can control an inner frame cylinder body through the connecting pipe to move the inner door frame of the door leaf away from the middle frame and extrude a first sealing strip. The pump body can control an outer frame cylinder body through the connecting pipe to move the outer door frame of the door leaf close to the middle frame and extrude a second sealing strip.

[0006] Further, the door frame is provided with: a first step, a second step, and a bolt hole, and the first step is connected with the first sealing strip.

[0007] Further, a fixed bolt cavity is arranged on the side of the middle frame. A fixed bolt and a fixed bolt cylinder body are arranged in the fixed bolt cavity. On the outer side of the middle frame, there are: an outer frame step one and an outer frame limiting groove. On the inner side of the middle frame, there are: an inner frame step one and an inner frame limiting groove.

[0008] Further settings are as follows: The inner frame of the door leaf is provided with: an inner frame cylinder step two, an inner frame end face, and an inner frame limiting strip. The inner frame cylinder body is arranged between the inner frame cylinder step one and the inner frame cylinder step two. The inner frame limiting strip moves within the inner frame limiting groove, and the first sealing strip is squeezed by the inner frame end face and the first step.

[0009] Further settings are as follows: The outer frame of the door leaf is provided with: an outer frame cylinder step two, a first sealing strip mounting surface, and an outer frame limiting strip. The outer frame cylinder body is arranged between the outer frame cylinder step one and the outer frame cylinder step two. The outer frame limiting strip moves within the outer frame limiting groove, and the first sealing strip mounting surface is arranged to be connected to the first sealing strip. The first sealing strip is squeezed by the first sealing strip mounting surface and the second step.

[0010] The technical solution of the present utility model controls each cylinder body through a pump body to control the locking of the middle frame and the door frame, and the tight pressing and sealing of the inner frame of the door leaf and the outer frame of the door leaf with the door frame respectively, providing an anti-theft door with a multi-layer sealing structure and solving the problem that the existing anti-theft door only has passive sealing of the sealing strip, resulting in poor sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a vertical section of the present utility model in a non-active sealing state Figure 1 ;

[0012] Figure 2 It is a vertical section of the present utility model in an active sealing state Figure 2 ;

[0013] Figure 3 It is a horizontal section of the present utility model in a non-active sealing state Figure 1 ;

[0014] Figure 4 It is a horizontal section of the present utility model in an active sealing state Figure 2 ;

[0015] In the figure: Door frame 1, first step 11, second step 12, bolt hole 13, first sealing strip 14, second sealing strip 15,

[0016] Door leaf, fixed bolt 21, middle frame 3, fixed bolt cavity 31, inner frame cylinder step one 32, outer frame cylinder step one 33, inner frame limiting groove 34, outer frame limiting groove 35,

[0017] Pump body 4, connecting pipe 51, fixed bolt cylinder body 52, inner frame cylinder body 53, outer frame cylinder body 54, inner frame of the door leaf 6, inner frame cylinder step two 61, inner frame end face 62, inner frame limiting strip 63, outer frame of the door leaf 7, outer frame cylinder step two 71, first sealing strip mounting surface 72, outer frame limiting strip 73. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings.

[0019] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0020] Secondly, the present utility model will be described in detail with reference to the schematic diagrams. When detailing the embodiments of the present utility model, for ease of explanation, the cross-sectional views showing the device structure will be enlarged locally out of the general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0021] To make the purpose, technical solution, and advantages of the present utility model clearer, the following will further describe in detail the embodiments of the present utility model with reference to the accompanying drawings.

[0022] As Figures 1-4 shown, a security door with a multi-layer sealing structure includes: a door frame 1 connected to a door leaf. The door leaf includes: an intermediate frame 3, an inner frame 6 of the door leaf, and an outer frame 7 of the door leaf. A pump body 4 fixedly arranged in the intermediate frame 3 can control a fixed bolt cylinder body 52 through a connecting pipe 51 to push out a fixed bolt 21 to connect with a bolt hole 13 of the door frame 1 to fix the position between the door frame 1 and the intermediate frame 3. The pump body 4 can control an inner frame cylinder body 53 through the connecting pipe 51 to move the inner frame 6 of the door leaf away from the intermediate frame 3 and extrude a first sealing strip 14. The pump body 4 can control an outer frame cylinder body 54 through the connecting pipe 51 to move the outer frame 7 of the door leaf close to the intermediate frame 3 and extrude a second sealing strip 15.

[0023] Preferably, the door frame 1 is provided with: a first step 11, a second step 12, and a bolt hole 13. The first step 11 is connected to the first sealing strip 14.

[0024] Preferably, a fixed bolt cavity 31 is provided on the side of the intermediate frame 3. A fixed bolt 21 and a fixed bolt cylinder body 52 are arranged in the fixed bolt cavity 31. On the outer side of the intermediate frame 3, there are: an outer frame step one 33 and an outer frame limit groove 35. On the inner side of the intermediate frame 3, there are: an inner frame step one 32 and an inner frame limit groove 34.

[0025] Preferably, the inner frame 6 of the door leaf is provided with: an inner frame step two 61, an inner frame end face 62, and an inner frame limit strip 63. The inner frame cylinder body 53 is arranged between the inner frame step one 32 and the inner frame step two 61. The inner frame limit strip 63 moves in the inner frame limit groove 34. The first sealing strip 14 is extruded by the inner frame end face 62 and the first step 11.

[0026] Preferably, the outer frame of the door leaf 7 is provided with: an outer frame cylinder step two 71, a first sealing strip mounting surface 72, and an outer frame limiting strip 73. The outer frame cylinder body 54 is arranged between the outer frame cylinder step one 33 and the outer frame cylinder step two 71. The outer frame limiting strip 73 moves within the outer frame limiting groove 35. The first sealing strip mounting surface 72 is arranged to be connected to the first sealing strip 14, and the first sealing strip 14 is squeezed by the first sealing strip mounting surface 72 and the second step 12.

[0027] The closing operation steps of the present utility model are as follows:

[0028] 1. Initial closing of the door:

[0029] When the user closes the door leaf, the middle frame 3 is roughly aligned with the door frame 1. There is a certain gap between the inner frame 6 of the door leaf, the outer frame 7 of the door leaf and the door frame 1. The first sealing strip 14 is not completely compressed yet, and the sealing effect is not at its best.

[0030] 2. Fixing the positions of the door frame and the middle frame:

[0031] The user starts the pump body 4 (the pump body 4 can be linked with the lock body and starts to pressurize when the lock tongue is in place). The pump body supplies pressure to the fixed bolt cylinder body 52 through the connecting pipe 51. The fixed bolt cylinder body 52 pushes the fixed bolt 21, making it eject and insert into the bolt hole 13 of the door frame 1 to fix the positions of the door frame 1 and the middle frame 3 and prevent the displacement of the door leaf.

[0032] 3. Sealing and pressing of the inner frame:

[0033] The pump body 4 continues to work and supplies pressure to the inner frame cylinder body 53. The inner frame cylinder body 53 pushes the inner frame 6 of the door leaf, making it move away from the middle frame 3 and towards the door frame 1. During the movement, the inner frame end face 62 gradually presses against the first step 11 to squeeze the first sealing strip 14, realizing the seal between the inner frame 6 of the door leaf and the door frame 1.

[0034] 4. Sealing and pressing of the outer frame:

[0035] The pump body 4 supplies pressure to the outer frame cylinder body 54 at the same time. The outer frame cylinder body 54 pushes the outer frame 7 of the door leaf, making it move towards the middle frame 3 and close to the door frame 1. The outer frame limiting strip 73 moves within the outer frame limiting groove 35, making the relative position between the outer frame cylinder step two 71 and the outer frame cylinder step one 33 of the middle frame 3 stable. As the outer frame moves, the first sealing strip mounting surface 72 gradually approaches the second step 12 to squeeze the first sealing strip 14, realizing the seal between the outer frame 7 of the door leaf and the door frame 1.

[0036] The opening operation steps of the present utility model are as follows:

[0037] 1. Release the sealing and pressing of the outer frame

[0038] The user activates the pump body 4 (the pump body 4 can be linked to the lock body, and turning the door handle starts the pressure release operation). The pump body controls the outer frame cylinder 54 through the connecting pipe 51, causing the outer frame cylinder 54 to release pressure.

[0039] As the pressure of the outer frame cylinder 54 is released, the door leaf outer frame 7 gradually moves away from the middle frame 3 under the action of an elastic element (such as a spring) or an external force, and the pressing state between the door leaf outer frame 7 and the door frame 1 is released.

[0040] At this time, the compression of the first sealing strip 14 between the outer frame and the door frame is reduced, the sealing effect between the door leaf outer frame 7 and the door frame 1 is released, and the door leaf outer frame can move freely.

[0041] 2. Release the sealing and pressing of the inner frame

[0042] The pump body 4 continues to operate, controls the inner frame cylinder 53 through the connecting pipe 51, and causes the inner frame cylinder 53 to release pressure.

[0043] As the pressure of the inner frame cylinder 53 is released, the door leaf inner frame 6 gradually approaches the middle frame 3 under the action of an elastic element or an external force, and the pressing state between the door leaf inner frame 6 and the door frame 1 is released.

[0044] At this time, the compression of the first sealing strip 14 between the inner frame and the door frame is reduced, the sealing effect between the door leaf inner frame 6 and the door frame 1 is released, and the door leaf inner frame can move freely.

[0045] 3. Release the locking between the door frame and the middle frame

[0046] The pump body 4 controls the fixing bolt cylinder 52 through the connecting pipe 51, causing the fixing bolt cylinder 52 to release pressure.

[0047] After the pressure of the fixing bolt cylinder 52 is released, the fixing bolt 21 retracts into the fixing bolt cavity 31 under the action of an elastic element, and the fixing bolt 21 withdraws from the bolt hole 13 of the door frame 1.

[0048] At this time, the locking between the middle frame 3 and the door frame 1 is released, and the door leaf can be opened freely.

[0049] 4. Open the door

[0050] After the above steps are completed, the user can normally pull the door leaf, separating the door leaf from the door frame 1. Both the door leaf inner frame 6 and the door leaf outer frame 7 can be moved away from the door frame 1, and the door leaf is fully opened.

[0051] The technical solution of the present utility model controls each cylinder through the pump body to control the locking between the middle frame 3 and the door frame 1 and the tight pressing and sealing of the door leaf inner frame 6 and the door leaf outer frame 7 with the door frame 1 respectively, providing an anti-theft door with a multi-layer sealing structure, which solves the problem that the existing anti-theft door only has passive sealing by the sealing strip, resulting in poor sealing effect.

[0052] Although the present utility model has been described above with reference to the embodiments, various improvements can be made thereto and components thereof can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed by the present utility model can be combined with each other in any way, and the exhaustive description of these combinations is not given in this specification only for the consideration of saving space and resources. Therefore, the present utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. An anti-theft door with a multi-layer sealing structure, comprising: The door frame (1) is connected to the door leaf. It is characterized in that the door leaf includes: an intermediate frame (3), an inner door frame (6), and an outer door frame (7). The pump body (4) fixedly arranged in the intermediate frame (3) can control the fixed bolt cylinder body (52) through the connecting pipe (51) to eject the fixed bolt (21) to be connected with the bolt hole (13) of the door frame (1) so as to fix the position between the door frame (1) and the intermediate frame (3). The pump body (4) can control the inner frame cylinder body (53) through the connecting pipe (51) to move the inner door frame (6) away from the intermediate frame (3) and squeeze the first sealing strip (14). The pump body (4) can control the outer frame cylinder body (54) through the connecting pipe (51) to move the outer door frame (7) close to the intermediate frame (3) and squeeze the second sealing strip (15).

2. The anti-theft door with a multi-layer sealing structure according to claim 1, characterized in that: The door frame (1) is provided with: a first step (11), a second step (12), and a bolt hole (13). The first step (11) is connected to the first sealing strip (14).

3. The anti-theft door with a multi-layer sealing structure according to claim 2, wherein: A fixed bolt cavity (31) is arranged on the side of the intermediate frame (3). The fixed bolt (21) and the fixed bolt cylinder body (52) are arranged in the fixed bolt cavity (31). On the outer side of the intermediate frame (3), there are: an outer frame step one (33) and an outer frame limiting groove (35). On the inner side of the intermediate frame (3), there are: an inner frame step one (32) and an inner frame limiting groove (34).

4. The anti-theft door with a multi-layer sealing structure according to claim 3, characterized in that: The inner door frame (6) is provided with: an inner frame step two (61), an inner frame end face (62), and an inner frame limiting strip (63). The inner frame cylinder body (53) is arranged between the inner frame step one (32) and the inner frame step two (61). The inner frame limiting strip (63) moves in the inner frame limiting groove (34). The first sealing strip (14) is squeezed by the inner frame end face (62) and the first step (11).

5. The anti-theft door with a multi-layer sealing structure according to claim 4, characterized in that: The outer door frame (7) is provided with: an outer frame step two (71), a first sealing strip mounting surface (72), and an outer frame limiting strip (73). The outer frame cylinder body (54) is arranged between the outer frame step one (33) and the outer frame step two (71). The outer frame limiting strip (73) moves in the outer frame limiting groove (35). The first sealing strip mounting surface (72) is arranged to be connected with the first sealing strip (14). The first sealing strip (14) is squeezed by the first sealing strip mounting surface (72) and the second step (12).

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