Automatic positioning air defense door for air defense garage

Abstract

This invention relates to an automatically positioning air-raid shelter door for air-raid shelter garages, comprising a door leaf hinged to a door frame, a handle fixedly connected to the side of the door leaf, and a locking mechanism embedded in the inner cavity of the door leaf via an inset groove. The locking mechanism includes a sliding plate slidably disposed within the inset groove, and a return spring fixedly connected to the top of the sliding plate, one end of the return spring abutting against the top of the inner cavity of the inset groove. This invention relates to the field of air-raid shelter door technology. This automatically positioning air-raid shelter door for air-raid shelter garages requires the door to be positioned on both sides when opened. Because a limiting structure cannot be installed, the air-raid shelter door may move left or right. By setting an automatic positioning limiting mechanism to lock it, and quickly releasing the position when subjected to external force, the door leaf can be quickly positioned at any angle, and the positioning can be quickly released under external force to prevent the door leaf from swaying left or right.

Description

Technical Field

[0001] This invention relates to the field of civil defense door technology, specifically to an automatic positioning civil defense door for civil defense garages. Background Technology

[0002] Civil defense doors are generally installed in shopping malls, residential communities, and various gathering places with high traffic flow. They are mainly used to protect people seeking refuge and block the damage caused by explosions.

[0003] Existing air-raid shelter doors, when normally open, lack a positioning mechanism and will sway left and right, unable to be fixed at any angle at any time. If locked by a locking mechanism, they cannot be quickly unlocked when they need to be opened or closed in an emergency. Therefore, an air-raid shelter door that can automatically position and unlock quickly is proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an automatically positioning civil defense door for civil defense garages, thus solving the aforementioned problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatically positioning air-raid shelter door for air-raid shelter garages, comprising a door leaf hinged to a door frame, a handle fixedly connected to the side of the door leaf, a locking mechanism housed within the inner cavity of the door leaf via an embedded groove, the locking mechanism comprising a sliding plate slidably disposed within the embedded groove, a return spring fixedly connected to the top of the sliding plate, one end of the return spring abutting against the top of the inner cavity of the embedded groove, a positioning rod fixedly connected to the bottom of the sliding plate, the end of the positioning rod penetrating and extending to the bottom of the door leaf, the surface of the positioning rod slidably connected to the inner cavity of the door leaf, a lifting plate slidably connected to the inner cavity of the handle, a first pull rope fixedly connected to one side of the lifting plate, a wire harness groove adapted to the first pull rope being provided on the side of the door leaf, a second pull rope fixedly connected above the end of the first pull rope, one end of the second pull rope penetrating and extending to the inner cavity of the embedded groove, and the end of the second pull rope fixedly connected to the top of the sliding plate;

[0006] The inner cavity of the door leaf is equipped with an adsorption mechanism for adsorbing the positioning rod. The adsorption mechanism includes a movable groove above the recessed groove, conductive lines on both sides of the movable groove in the inner cavity of the door leaf, and electromagnets on both sides of the recessed groove that are respectively connected to the two conductive lines. A conductive plate is movably connected to the inner cavity of the movable groove. An elastic block is fixedly connected to the top of the conductive plate and fixedly connected to the inner cavity of the movable groove. The end of the first pull rope is fixedly connected to the top of the conductive plate. A magnetic ring is fixedly connected to the surface of the positioning rod. In use, when the door leaf is opened, it is rotated to a fixed angle, and then the pull plate inside the handle is released. At this time, the return spring pushes the sliding plate downward, pulling the second pull rope downward. At this time, the end of the positioning rod extends out from under the door leaf and abuts against the ground, and the second pull... The downward movement of the first pull rope causes it to move downward as well. As the first pull rope descends, the conductive sheet moves downward under the push of the elastic block, connecting to two conductive lines and forming a circuit. The electromagnet is then powered, attracting the magnetic ring on the positioning rod and positioning it to prevent it from retracting due to ground reaction force. This increases pressure on the ground, making the positioning more secure. When movement is needed, pull the handle while holding the lifting plate, pulling the first pull rope to retract it, which in turn retracts the second pull rope. The first pull rope moves first, causing the conductive sheet to compress the elastic block and move upward, breaking the circuit. The electromagnet loses power and its attraction to the positioning rod. Then, the second pull rope moves upward, causing the sliding block to squeeze the reset spring and move upward, retracting the positioning rod. Holding the handle at this point allows you to push the door to adjust the opening angle.

[0007] As a further aspect of the present invention: grooves are provided on both sides of the positioning rod, and friction teeth are provided at the bottom of the grooves. The surfaces of the friction teeth are respectively provided with tooth grooves that are inclined at 30 degrees to the left and right, and are staggered to each other. Through the staggered tooth grooves that are inclined at 30 degrees to the left and right, friction with the ground is increased, and the door leaf can be effectively positioned on the ground by the positioning rod to complete the limiting. The fixing force is not large. When the air defense door can be positioned, the positioning can be quickly canceled and the position of the air defense door can be moved.

[0008] As a further aspect of the present invention: the inner cavity of the handle is provided with a sleeve covering the surface of the lifting plate, and the lifting plate is wrapped by the sleeve to prevent gaps from forming between it and the handle.

[0009] As a further aspect of the present invention: the inner cavity of the wire harness groove is equipped with a guide wheel for changing the direction of the first pull rope, and the guide wheel changes the direction of the first pull rope from the horizontal direction to the vertical direction.

[0010] As a further aspect of the present invention: when the reset spring is relaxed, the positioning rod is located below the door leaf.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] 1. In this invention, when the door is opened and rotated to a fixed angle, the pull plate inside the handle is released. At this time, the return spring pushes the sliding plate downward, pulling the second pull rope downward. At this time, the end of the positioning rod extends out from under the door and abuts against the ground. At the same time, the downward movement of the second pull rope drives the first pull rope downward. When the first pull rope is released, the conductive sheet moves downward under the push of the elastic block and connects to two conductive lines respectively, forming a circuit in the conductive lines. At this time, the electromagnet is powered to attract the magnetic ring on the positioning rod, positioning the positioning rod and preventing it from being pulled back by the ground reaction force, increasing the pressure on the ground, and making the positioning more secure. When the air defense door is opened, it needs to be positioned on both sides. Because a limiting structure cannot be set, the air defense door may move left and right. By setting an automatic positioning limiting mechanism, it is locked. When subjected to external force, it can be quickly released, and the door can be quickly positioned at any angle. Under external force, the positioning can be quickly released to prevent the door from swaying left and right.

[0013] 2. This invention uses staggered, 30-degree inclined toothed grooves to increase friction with the ground. The positioning rod can effectively position the door leaf on the ground, completing the limiting, and the fixing force is not large. When the air defense door can be positioned, the positioning can be quickly canceled and the position of the air defense door can be moved. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention;

[0015] Figure 2 This is a cross-sectional view of the structure of the present invention;

[0016] Figure 3 This is a schematic diagram showing the structural connection between the first and second pull ropes of the present invention;

[0017] Figure 4 For the present invention Figure 2 A magnified view of a section at point A in the middle;

[0018] Figure 5 For the present invention Figure 2 A magnified view of a section at point B in the middle;

[0019] Figure 6 This is a partial structural schematic diagram of the positioning rod of the present invention.

[0020] In the diagram: 1. Door leaf; 2. Handle; 3. Sheath; 4. Lifting plate; 5. Wiring harness groove; 6. First pull rope; 7. Conductive sheet; 8. Second pull rope; 9. Movable groove; 10. Elastic block; 11. Conductive circuit; 12. Electromagnet; 13. Return spring; 14. Sliding plate; 15. Positioning rod; 16. Magnetic ring; 17. Groove; 18. Friction tooth path. Detailed Implementation

[0021] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0022] Please see Figure 1-6 This invention provides a technical solution: an automatic positioning air defense door for air defense garages, including a door leaf 1 hinged to a door frame, a handle 2 fixedly connected to the side of the door leaf 1, a locking mechanism built into the inner cavity of the door leaf 1 through an embedded groove, the locking mechanism including a sliding plate 14 slidably disposed in the embedded groove, a return spring 13 fixedly connected to the top of the sliding plate 14, one end of the return spring 13 abutting against the top of the inner cavity of the embedded groove, a positioning rod 15 fixedly connected to the bottom of the sliding plate 14, the end of the positioning rod 15 penetrating and extending to the bottom of the door leaf 1, the surface of the positioning rod 15 slidably connected to the inner cavity of the door leaf 1, a lifting plate 4 slidably connected to the inner cavity of the handle 2, a first pull rope 6 fixedly connected to one side of the lifting plate 4, a wire harness groove 5 adapted to the first pull rope 6 opened on the side of the door leaf 1, a second pull rope 8 fixedly connected above the end of the first pull rope 6, one end of the second pull rope 8 penetrating and extending to the inner cavity of the embedded groove, and the end of the second pull rope 8 fixedly connected to the top of the sliding plate 14;

[0023] The inner cavity of the door leaf 1 is equipped with an adsorption mechanism for adsorbing the positioning rod 15. The adsorption mechanism includes a movable groove 9 opened above the recessed groove, conductive lines 11 arranged on both sides of the movable groove 9 in the inner cavity of the door leaf 1, and electromagnets 12 arranged on both sides of the recessed groove and respectively connected to the two conductive lines 11. A conductive plate 7 is movably connected to the inner cavity of the movable groove 9. An elastic block 10 is fixedly connected to the top of the conductive plate 7 and fixedly connected to the inner cavity of the movable groove 9. The end of the first pull rope 6 is fixedly connected to the top of the conductive plate 7. A magnetic ring 16 is fixedly connected to the surface of the positioning rod 15. When the door leaf 1 is opened, it is rotated to a fixed angle, and then the lifting plate 4 in the handle 2 is released. At this time, the return spring 13 pushes the sliding plate 14 to move downward, pulling the second pull rope 8 downward. At this time, the end of the positioning rod 15 extends out from under the door leaf 1 and abuts against the ground, and the second pull rope 8 moves downward. The first pull rope 6 is pulled downwards. At this time, the first pull rope 6 is lowered, and under the push of the elastic block 10, the conductive plate 7 moves downwards and connects to the two conductive lines 11 respectively. Then, a circuit is formed in the conductive lines 11. At this time, the electromagnet 12 is powered and attracts the magnetic ring 16 on the positioning rod 15, positioning the positioning rod 15 and preventing it from being pulled back by the ground reaction force, increasing the pressure on the ground, and making the positioning more secure. When it is necessary to move, pull the handle 2. At this time, the hand holds the lifting plate 4 and pulls the first pull rope 6 to retract, which drives the second pull rope 8 to retract. The first pull rope 6 moves first, causing the conductive plate 7 to compress the elastic block 10 and move upwards to break the circuit. The electromagnet 12 is de-energized and loses its attraction to the positioning rod 15. Then, the second pull rope 8 moves upwards, causing the sliding block to squeeze the reset spring 13 and move upwards, driving the positioning rod 15 to retract. At this time, hold the handle 2 and push the door leaf 1 to move and adjust the opening and closing angle.

[0024] The positioning rod 15 has grooves 17 on both sides, and friction teeth 18 are provided at the bottom of the grooves 17. The surface of the friction teeth 18 is provided with teeth that are inclined at 30 degrees to the left and right, and are staggered to each other. Through the staggered teeth that are inclined at 30 degrees to the left and right, friction with the ground is increased, and the door leaf 1 can be effectively positioned on the ground by the positioning rod 15 to complete the limit. The fixing force is not large. When the air defense door can be positioned, the positioning can be quickly canceled and the position of the air defense door can be moved.

[0025] The inner cavity of the handle 2 is provided with a sleeve 3 covering the surface of the lifting plate 4. The sleeve 3 wraps the lifting plate 4 to prevent gaps from forming between it and the handle 2.

[0026] The inner cavity of the wire harness groove 5 has a guide wheel for changing the direction of the first pull rope 6. The guide wheel changes the direction of the first pull rope 6 from the horizontal direction to the vertical direction.

[0027] When the return spring 13 is relaxed, the positioning rod 15 is located below the door leaf 1.

[0028] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A civil defense door capable of automatic positioning for a civil defense garage, comprising a door leaf (1) hinged to a door frame, a handle (2) fixedly connected to the side of the door leaf (1), characterized in that: The inner cavity of the door leaf (1) is provided with a locking mechanism in the embedded groove, the locking mechanism comprises a sliding plate (14) slidingly arranged in the embedded groove, the top of the sliding plate (14) is fixedly connected with a return spring (13), one end of the return spring (13) abuts against the top of the inner cavity of the embedded groove, the bottom of the sliding plate (14) is fixedly connected with a positioning rod (15), the distal end of the positioning rod (15) penetrates and extends below the door leaf (1), the surface of the positioning rod (15) is slidingly connected with the inner cavity of the door leaf (1), the inner cavity of the handle (2) is slidingly connected with a pull plate (4), one side of the pull plate (4) is fixedly connected with a first pull rope (6), the side edge of the door leaf (1) is provided with a wire groove (5) matched with the first pull rope (6), the distal end of the first pull rope (6) is fixedly connected with a second pull rope (8), one end of the second pull rope (8) penetrates and extends into the inner cavity of the embedded groove, and the distal end of the second pull rope (8) is fixedly connected with the top of the sliding plate (14). The inner cavity of the door leaf (1) is provided with an adsorption mechanism for adsorbing the positioning rod (15), the adsorption mechanism comprises a movable groove (9) arranged above the embedded groove, conductive lines (11) arranged on both sides of the movable groove (9) in the inner cavity of the door leaf (1), and electromagnets (12) arranged on both sides of the inner cavity of the embedded groove and in communication with the two conductive lines (11), respectively, the inner cavity of the movable groove (9) is movably connected with a conductive sheet (7), the top of the conductive sheet (7) is fixedly connected with an elastic block (10) fixedly connected with the inner cavity of the movable groove (9), the distal end of the first pull rope (6) is fixedly connected with the top of the conductive sheet (7), and the surface of the positioning rod (15) is fixedly connected with a magnetic ring (16).

2. The automatically positionable blast door for a blast protected garage of claim 1, wherein: The two sides of the positioning rod (15) are provided with grooves (17), the bottoms of the grooves (17) are provided with friction tooth tracks (18), the surfaces of the friction tooth tracks (18) are respectively provided with tooth grooves arranged at an inclination of 30 degrees left and right, and the tooth grooves are arranged alternately.

3. The automatically positionable blast door for a blast protected garage of claim 1, wherein: The inner cavity of the handle (2) is provided with a sleeve film (3) wrapped on the surface of the pull plate (4).

4. The automatically positionable blast door for a blast protected garage of claim 1, wherein: The inner cavity of the wire groove (5) is provided with a guide wheel for changing the direction of the first pull rope (6), the guide wheel changes the direction of the first pull rope (6) from the horizontal direction to the vertical direction.

5. The automatically positionable blast door for a blast protected garage of claim 1, wherein: When the return spring (13) is relaxed, the positioning rod (15) is located below the door leaf (1).

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