Heat-insulation fireproof security door
By setting elastic elements and partitions on the security door to form a heat insulation area, and combining them with fixing and limiting components, the problem of insufficient fire resistance and heat insulation performance of the security door is solved, thereby improving the stability and anti-theft performance of the door.
Patent Information
- Application Number
- CN202520342895.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Existing security doors are inadequate in terms of fire resistance and heat insulation. They are easily rendered ineffective if the lock cylinder is damaged, and heat can easily be transferred into the room through the door during a fire.
A heat-insulating, fireproof, and burglarproof door was designed. By setting elastic elements and partitions around the door body to form a heat-insulating area, and setting fixing components and limiting components at the bottom of the door body, the door frame can be embedded or moved away from the groove by the cooperation of sliding blocks and baffles. Combined with the limiting components, the handle is limited, thereby enhancing the stability and anti-theft performance of the door body.
It effectively reduces heat exchange between indoors and outdoors, improves the stability and anti-theft performance of the door, enhances the heat insulation effect, prevents the spread of fire, and improves the overall fire prevention and anti-theft performance.
Smart Images

Figure CN223952542U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to the technical field of fireproof doors, and particularly relates to a heat-insulating fireproof security door. BACKGROUND
[0002] A door is an entrance or exit of a building or a device installed at the entrance or exit and capable of being opened and closed, and can be classified into different types according to functions and materials, and the security door is the most commonly used door body and is widely used in entrances and exits of houses, shops, warehouses and the like. However, the existing security door only focuses on the security of the lock core, and criminals may enter the room by damaging the lock core, and the existing door body lacks heat insulation effect, and when a fire occurs, heat may be quickly transferred to the room through the door body, thereby limiting the fireproof performance. CONTENT OF THE UTILITY MODEL
[0003] The utility model aims at providing a heat-insulating fireproof security door to solve the above problems.
[0004] The technical scheme of the application is implemented as follows:
[0005] The application provides a heat-insulating fireproof security door, which comprises a door frame, a door body is installed in the door frame, a first elastic member is arranged on one side of the door body, a plurality of first elastic members are arranged on the periphery of the door body, a partition plate is installed at the other end of the first elastic member, a hollow part is arranged on the partition plate at a position corresponding to a handle of the door body, and a heat insulation area is formed between the partition plate and the door body.
[0006] A slot penetrating through the door body and the partition plate is arranged at the bottom of the door body, a fixing assembly is arranged on the side of the door body away from the partition plate, the fixing assembly comprises a support, the support is arranged on the door body, the support is provided with a sliding groove in communication with the slot, two groups of sliding seats are movably arranged in the sliding groove, a baffle penetrating through the slot is arranged on the sliding seat, a slot is arranged on the baffle, and part of the door frame is embedded in or away from the slot through relative movement of the sliding seat in the slot.
[0007] Screw holes are arranged on both sides of the slot, and through holes are arranged on the sliding seat at positions corresponding to the screw holes.
[0008] A limiting assembly is further arranged on the door body, two groups of recesses are arranged on the door body and located on both sides of the handle, the limiting assembly comprises a bearing seat, the bearing seat is movably arranged on the two groups of recesses, a stop block part is arranged on the bearing seat, and the two groups of stop block parts form a limiting area, and the handle is located in or away from the limiting area through movement of the bearing seat in the recess.
[0009] In an embodiment, the stop block part comprises a storage seat and a limiting seat, the storage seat is vertically arranged on the bearing seat, the storage seat is provided with a cavity, a shaft rod is arranged in the cavity, and the limiting seat is sleeved on the shaft rod, so that the limiting seat has a rotation freedom degree with the shaft rod as the center.
[0010] The limiting seat is parallel or perpendicular to the handle through rotation of the shaft.
[0011] In an embodiment, the support is provided with a first threaded hole, and a screw rod is threadedly connected to the first threaded hole, two ends of the screw rod extending to two ends of the support;
[0012] The bottom of the screw rod is provided with a support seat, and a hand wheel is mounted on the top of the screw rod outside the support seat, the support seat is driven to rotate through the hand wheel, and the bottom end of the support seat is close to or away from the ground;
[0013] The side of the support seat facing the ground is provided with a non-slip pad.
[0014] In an embodiment, the limiting seat is provided with an opening, and an elastic supporting part is arranged in the opening, the elastic supporting part comprising a second elastic member and a buffer pad, one end of the second elastic member being connected to an end face of the opening, and the other end being connected to the buffer pad;
[0015] The second elastic member is provided with a plurality of elastic members and is spaced along the length direction of the opening;
[0016] The two groups of limiting seats are symmetrically distributed.
[0017] In an embodiment, the door frame is provided with a plurality of tapered protrusions spaced apart on both sides, the inner wall of the slot is provided with a clamping groove corresponding to the position of the tapered protrusion, and the tapered protrusion and the clamping groove are matched with each other;
[0018] Through cooperation of the sliding seat and the baffle, when the inner wall of the slot abuts against the door frame, the tapered protrusion is embedded in the clamping groove.
[0019] In an embodiment, the door body is further provided with a second threaded hole, one end of the second threaded hole penetrating through the partition plate, and a bolt member is threadedly connected to the second threaded hole;
[0020] The range of the heat insulation area is reduced or expanded through the bolt member close to or away from the second threaded hole.
[0021] In an embodiment, the door body is further provided with two groups of symmetrically distributed mounting holes, and the mounting holes are located between the two groups of grooves;
[0022] The bearing seat is provided with a through hole, and the through hole and the mounting hole have the same hole diameter;
[0023] When the through hole and one of the mounting holes are aligned, a pin shaft is connected between the through hole and the mounting hole.
[0024] In an embodiment, the door body is provided with fireproof cotton, and fireproof plates are adhered to both sides of the fireproof cotton.
[0025] The advantages or beneficial effects of the above technical solutions at least include:
[0026] This application discloses a heat-insulating, fireproof, and burglarproof door. Elastic members connected to a partition are installed around one side of the door body, creating a heat-insulating zone between the partition and the door body that reduces heat exchange between the interior and exterior, preventing heat from directly passing through the door body to the other side. A fixing component is installed at the bottom of the door body. By moving a sliding block in the fixing component, the block moves towards the door frame until the door frame portion is embedded in a groove in the block. This allows the block, in conjunction with the door frame, to buffer and limit the door body when it is subjected to external impact, reducing the risk of the door opening due to a collision. Furthermore, a limiting component is installed on the door body. By placing two sets of stop blocks on both sides of the handle, the handle is limited when turned, preventing it from turning the lock cylinder. The combination of the limiting component and the fixing component limits and fixes the door body from two positions, thereby improving its anti-theft performance. The partition further enhances the door's heat insulation effect, solving the problems of existing door anti-theft methods being singular and lacking heat insulation. Attached Figure Description
[0027] The accompanying drawings illustrate exemplary embodiments of the present application and, together with the description thereof, serve to explain the principles of the present application. These drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification.
[0028] Figure 1 A structural schematic diagram from one perspective of an embodiment of this application is shown;
[0029] Figure 2 A structural schematic diagram from another perspective of an embodiment of this application is presented;
[0030] Figure 3 A partial structural schematic diagram of an embodiment of this application is shown;
[0031] Figure 4 A schematic diagram of a partial cross-section structure according to an embodiment of this application is shown;
[0032] Figure 5 Another partially cross-sectional structural diagram of an embodiment of this application is shown;
[0033] Figure 6 Examples of this application are presented. Figure 1 Enlarged view of point A in the middle;
[0034] Figure 7 Examples of this application are presented. Figure 3 Enlarged view of point B in the middle;
[0035] Figure 8 Examples of this application are presented. Figure 4 Enlarged view of point C in the middle;
[0036] Figure 9 Fig. 1 is a schematic view of an internal structure of a door body according to an embodiment of the present application;
[0037] Fig. 1 is a schematic view of an internal structure of a door body according to an embodiment of the present application;
[0038] 2, door body; 21, first elastic member; 22, partition plate; 221, hollow part; 23, slot; 24, groove; 25, second threaded hole; 251, bolt member; 26, mounting hole; 27, fireproof cotton; 271, fireproof plate;
[0039] 3, fixing assembly; 31, support; 311, sliding groove; 312, screw rod; 3121, support seat; 3122, hand wheel; 313, moving slot; 32, sliding seat; 321, protruding part; 33, baffle; 331, notch; 3311, clamping groove;
[0040] 4, limiting assembly; 41, bearing seat; 411, through hole; 42, stop block part; 421, storage seat; 4211, shaft rod; 422, limiting seat; 4221, opening;
[0041] 5, elastic support part; 51, second elastic member; 52, buffer pad. DETAILED DESCRIPTION
[0042] Embodiments of the present application will be described in more detail by referring to the attached drawings. Although certain embodiments of the present application are shown in the drawings, it is understood that the present application can be carried out by various forms and should not be interpreted as being limited to the embodiments set forth herein, but rather these embodiments are provided so as to more completely and thoroughly understand the present application. It is understood that the drawings and embodiments of the present application are for exemplary purposes only and are not intended to limit the scope of protection of the present application.
[0043] It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.
[0044] It should be understood that the term "comprising" and variations thereof as used in the present application are open-ended, i.e., "including but not limited to". The term "based on" is "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Related definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present application are only used to distinguish different devices, modules or units, and do not limit the order or interdependence of the functions performed by these devices, modules or units.
[0045] It should be noted that the modification of "one", "a number of" mentioned in the present application is illustrative but not restrictive, and those skilled in the art should understand that unless otherwise explicitly indicated in the context, it should be understood as "one or more".
[0046] The names of the messages or information exchanged between the devices in the embodiments of the present application are only for illustrative purposes, and are not intended to limit the scope of the messages or information.
[0047] Referring to Figures 1-8 A heat insulation, fireproof and theftproof door, comprising a door frame 1, a door body 2 installed in the door frame 1, a first elastic member 21 arranged on one side of the door body 2, the first elastic member 21 being a compression spring or a telescopic spring in the prior art, a plurality of the first elastic members 21 being arranged around the door body 2, the other end of the first elastic member 21 being provided with a partition plate 22, the internal structure of the partition plate 22 being the same as that of the door body 2, a hollow part 221 being arranged on the partition plate 22 corresponding to the position of the handle of the door body 2, the arrangement of the hollow part 221 being able to avoid the partition plate 22 limiting the handle, a heat insulation area being formed between the partition plate 22 and the door body 2, the heat insulation area being able to effectively reduce the exchange of heat between the indoor and outdoor, if a fire occurs, the heat insulation area being able to play a certain role in blocking heat and delaying the spread of fire;
[0048] A slot 23 penetrating the door body 2 and the partition plate 22 is arranged at the bottom of the door body 2, a fixing assembly 3 is arranged on the side of the door body 2 away from the partition plate 22, the fixing assembly 3 being used for fixing the door body 2 and the door frame 1, thereby improving the stability of the door body 2 when a collision occurs, the fixing assembly 3 comprising a support 31 arranged on the door body 2, the support 31 having a sliding groove 311 in communication with the slot 23, the length of the sliding groove 311 being greater than that of the slot 23, two groups of sliding seats 32 being movably arranged on the sliding groove 311, a baffle 33 penetrating the slot 23 being arranged on the sliding seat 32, a slot 331 being arranged on the baffle 33, part of the door frame 1 being embedded into or away from the slot 331 by the relative movement of the sliding seat 32 on the slot 23, the baffle 33 being relatively moved by the movement of the sliding seat 32, thereby achieving the buckling of the door frame 1;
[0049] Screw holes are arranged on both sides of the slot 23, a through hole is arranged on the sliding seat 32 corresponding to the position of the screw hole, when the end surface of the sliding seat 32 is attached to the slot 23, a fixing screw is threadedly connected to the screw hole through the through hole, thereby achieving the fixation of the sliding seat 32, avoiding the movement of the sliding seat 32 by the external personnel moving the baffle 33;
[0050] The door body 2 is further provided with a limiting assembly 4. The door body 2 is provided with two groups of recesses 24 which are spaced apart and located on both sides of the handle. The limiting assembly 4 comprises a bearing seat 41 which is movably arranged on the two groups of recesses 24. The bearing seat 41 is provided with a blocking part 42. The two groups of blocking parts 42 form a limiting area. The handle is located in or away from the limiting area through the movement of the bearing seat 41 in the recess 24.
[0051] Based on the above structure, the partition plate 22 is located on one side of the door body 2 through the arrangement of the first elastic member 21. A gap is formed between the partition plate 22 and the door body 2. When the external airflow moves to the door body 2 through the partition plate 22, the exchange of indoor and outdoor heat can be effectively reduced. When the door body 2 is closed, the slot 331 of the baffle 33 is buckled to part of the door frame 1 through the movement of the baffle 33 driven by the sliding seat 32 of the fixing assembly 3. The stability of the door body 2 when colliding can be improved because the baffle 33 is connected with the door frame 1 and the door body 2. The limiting assembly 4 is arranged on the door body 2. When the handle changes the angle, the handle is blocked by the blocking part 42, so that the effect of rotating the handle cannot be achieved. The stability of the door body 2 as a whole and the rotation of the handle can be limited through the cooperation of the fixing assembly 3 and the limiting assembly 4. The arrangement of the partition plate 22 can improve the heat insulation effect of the door body 2. The problem that the anti-theft effect of the existing security door is single and the heat insulation performance is poor is solved.
[0052] In one embodiment, referring to Figure 1 、 Figure 3 and Figure 7 , the blocking part 42 comprises a storage seat 421 and a limiting seat 422. The storage seat 421 is vertically arranged on the bearing seat 41. The storage seat 421 has a cavity. A shaft 4211 is arranged in the cavity. The limiting seat 422 is sleeved on the shaft 4211. The limiting seat 422 has a rotation freedom degree with the shaft 4211 as the center.
[0053] Through the rotation of the limiting seat 422 on the shaft 4211, the limiting seat 422 and the handle are in parallel or vertical distribution. When the limiting seat 422 and the handle are in parallel, the handle can change the angle. When the limiting seat 422 and the handle are vertical, the limiting seat 422 limits the handle when the handle rotates the angle. Through the rotation of the limiting seat 422, the operator can adjust the rotation angle of the limiting seat 422 according to the actual situation, so as to adjust the limiting of the handle.
[0054] The door body 2 is further provided with two groups of symmetrically distributed mounting holes 26, the mounting holes 26 are located between the two groups of grooves 24, the bearing seat 41 is provided with a through hole 411, the through hole 411 and the mounting hole 26 have the same hole diameter, when the through hole 411 and one group of mounting holes 26 are aligned, a pin shaft is connected between the through hole 411 and the mounting hole 26, the bearing seat 41 and the mounting hole 26 can be fixed through the arrangement of the pin shaft, the arrangement of the two groups of mounting holes 26 can make the bearing seat 41 close to or away from the handle of the door body 2, when the bearing seat 41 limits the handle, the bearing seat 41 can be fixed, so as to avoid the deviation of the position of the bearing seat 41 after the blocking part 42 collides with the handle.
[0055] In one embodiment, referring to Figure 1 and Figure 6 , the support 31 is provided with a first threaded hole, and a screw rod 312 is threadedly connected to the first threaded hole, both ends of the screw rod 312 extend to both ends of the support 31, and the length of the screw rod 312 at both ends of the support 31 can be changed through rotation of the screw rod 312.
[0056] The bottom of the screw rod 312 is provided with a support seat 3121, and a hand wheel 3122 is installed on the top of the screw rod 312 outside the support 31, the hand wheel 3122 can facilitate rotation of the screw rod 312 by an operator, the support seat 3121 can be brought close to or away from the ground by rotating the screw rod 312 through the hand wheel 3122, the friction between the support seat 3121 and the ground can be improved when the support seat 3121 contacts the ground, the support seat 3121 can play a supporting role when the door body 2 collides, increasing the force required to push the door body 2, and the side of the support seat 3121 facing the ground is provided with a non-slip pad, which can further improve the friction between the support seat 3121 and the ground when they contact.
[0057] In one embodiment, referring to Figure 1 , Figure 3 and Figure 7 , the limiting seat 422 is provided with an opening 4221, and an elastic support part 5 is arranged in the opening 4221, the elastic support part 5 includes a second elastic member 51 and a buffer pad 52, the second elastic member 51 is a pressure spring or a telescopic spring in the prior art, one end of the second elastic member 51 is connected to an end face of the opening 4221, and the other end is connected to the buffer pad 52, the buffer pad 52 is made of rubber material;
[0058] The second elastic member 51 is provided with a plurality of second elastic members 51 distributed along the length direction of the opening 4221, and the two sets of limiting seats 422 are symmetrically distributed. The plurality of second elastic members 51 can disperse the impact force generated when the buffer pad 52 is impacted. Since the limiting seat 422 collides with the handle when limiting the handle, the end of the limiting seat 422 in contact with the handle is provided with a buffer pad 52. When the handle collides with the buffer pad 52, the mutual abrasion between the handle and the limiting seat 422 can be avoided, and the handle is protected.
[0059] In one embodiment, referring to Figure 1 、 Figure 2 and Figure 5 , the door frame 1 is provided with a plurality of tapered protrusions 11 distributed at intervals on both sides, and the inner wall of the slot 331 is provided with a clamping groove 3311 corresponding to the position of the tapered protrusion 11. The tapered protrusion 11 and the clamping groove 3311 are matched with each other to form a connection mode similar to mortise and tenon. Through the cooperation of the sliding seat 32 and the baffle 33, when the inner wall of the slot 331 abuts against the door frame 1, the tapered protrusion 11 is embedded in the clamping groove 3311. This connection mode can withstand greater tensile force, pressure and shear force compared to simple plane fitting. When the door body 2 is impacted, the baffle 33 and the door frame 1 can be prevented from separating, and the overall anti-collision ability of the door body 2 is improved.
[0060] In one embodiment, referring to Figure 1 、 Figure 4 and Figure 8 , the door body 2 is further provided with a second threaded hole 25, one end of the second threaded hole 25 penetrates the partition plate 22, and a bolt member 251 is threadedly connected to the second threaded hole 25. By moving the bolt member 251 closer to or away from the second threaded hole 25, the range of the heat insulation area is reduced or enlarged. When the bolt member 251 is located in the second threaded hole 25 and is rotated clockwise, the heat insulation range is reduced, and the first elastic member 21 is compressed. When the bolt member 251 moves away from the second threaded hole 25, the first elastic member 21 resets, thereby moving the partition plate 22 and increasing the heat insulation range. By adjusting the heat insulation range, the control of the heat insulation effect can be realized, which helps to maintain the indoor temperature stable.
[0061] In one embodiment, referring to Figure 1 and Figure 9The door body 2 is provided with fireproof cotton 27, which can be any one of rock wool, glass wool and aluminum silicate cotton in the prior art. The two sides of the fireproof cotton 27 are adhered with fireproof plates 271, which can be any one of glass magnesium fireproof plate or vermiculite plate in the prior art. By clamping the fireproof cotton 27 between the two fireproof plates 271, a fireproof sandwich structure is formed. The fireproof plates 271 can protect the outside and prevent the fireproof cotton 27 from being damaged by external physical factors. At the same time, the fireproof plates 271 can also block the initial transmission of heat to a certain extent. As the main heat insulation material, the fireproof cotton 27 can effectively prevent heat from further conducting indoors, thereby improving the overall fireproof performance of the door body 2. In addition, the fireproof plates 271 on both sides can increase the strength and rigidity of the door body 2 and improve the structural stability.
[0062] In one embodiment, referring to Figure 1 、 Figure 4 and Figure 5 , the top of the support 31 is provided with two groups of symmetrically distributed moving grooves 313, and the screw rod 312 is located between the two groups of moving grooves 313. The sliding seat 32 is provided with a protruding part 321 embedded in the moving groove 313. Through the cooperation of the protruding part 321 and the moving groove 313, the protruding part 321 can move along the length direction of the moving groove 313 when the sliding seat 32 moves, thereby limiting the movement of the sliding seat 32 and avoiding the deviation of the sliding seat 32 during movement. In addition, the friction force received by the sliding seat 32 during movement is dispersed, thereby facilitating the movement of the sliding seat 32.
[0063] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0064] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present application, and are not intended to limit the scope of the present application. Based on the above disclosure, other changes or modifications can also be made by those skilled in the art, and these changes or modifications are still within the scope of the present application.
Claims
1. A heat-insulating, fireproof and theftproof door, comprising a door frame and a door body installed in the door frame, characterized in that: One side of the door body is provided with a first elastic member, the first elastic member is provided with a plurality of and evenly distributed around the door body, the other end of the first elastic member is provided with a partition plate, the partition plate is provided with a hollow part corresponding to the position of the handle of the door body, and a heat insulation area is formed between the partition plate and the door body; The bottom of the door body is provided with a slot penetrating the door body and the partition plate, one side of the door body away from the partition plate is provided with a fixing assembly, the fixing assembly comprises a support, the support is arranged on the door body, the support is provided with a sliding groove communicating with the slot, two groups of sliding seats are movably arranged in the sliding groove, the sliding seats are provided with a baffle penetrating the slot, the baffle is provided with a notch, and the door frame is embedded in or away from the notch by relative movement of the sliding seats in the slot. The two sides of the slot are provided with screw holes, and the sliding seats are provided with through holes corresponding to the positions of the screw holes. The door body is also provided with a limiting assembly, the door body is provided with two groups of recesses and is located on both sides of the handle, the limiting assembly comprises a bearing seat, the bearing seat is movably arranged on the two groups of recesses, the bearing seat is provided with a stopper part, and the two groups of stopper parts form a limiting area.
2. The thermally and fire insulated security door according to claim 1, characterized in that: The stopper part comprises a storage seat and a limiting seat, the storage seat is vertically arranged on the bearing seat, the storage seat has a cavity, a shaft is arranged in the cavity, and the limiting seat is sleeved on the shaft, so that the limiting seat has a rotation freedom degree with the shaft as the center. The limiting seat and the handle are parallel or perpendicular to each other by rotating the limiting seat on the shaft.
3. The thermally and fire insulated security door according to claim 1, characterized in that: The support is provided with a first threaded hole, a screw rod is threadedly connected to the first threaded hole, and both ends of the screw rod extend to both ends of the support. The bottom of the screw rod is provided with a supporting seat, and the top of the screw rod outside the support is provided with a hand wheel. The side of the supporting seat facing the ground is provided with a non-slip pad.
4. The thermally and fire insulated security door according to claim 2, characterized in that: The limiting seat is provided with an opening, and an elastic supporting part is arranged in the opening. The second elastic member is provided with a plurality of and is spaced along the length direction of the opening. The two groups of limiting seats are symmetrically distributed.
5. The thermally and fire insulated security door according to claim 1, characterized in that: The door frame is provided with a plurality of spaced conical protrusions on both sides, the inner wall of the notch is provided with a clamping groove corresponding to the position of the conical protrusion, and the conical protrusion and the clamping groove are matched with each other. When the inner wall of the notch abuts against the door frame, the conical protrusion is embedded in the clamping groove through the cooperation of the sliding seat and the baffle.
6. The thermally and fire insulated security door according to claim 1, characterized in that: The door body is also provided with a second threaded hole, one end of the second threaded hole penetrates the partition plate, and a bolt member is threadedly connected to the second threaded hole. The bolt is used to move the second threaded hole closer to or farther from the first threaded hole, so as to reduce or expand the range of the heat insulation area.
7. The thermally and fire insulated security door according to claim 1, characterized in that: The door body is also provided with two groups of symmetrically distributed mounting holes between the two groups of grooves. The bearing seat is provided with a through hole, and the through hole has the same hole diameter as the mounting hole. When the through hole is aligned with one group of mounting holes, a pin shaft is connected between the through hole and the mounting hole.
8. The thermally and fire insulated security door according to claim 1, characterized in that: The door body is provided with fireproof cotton, and the two sides of the fireproof cotton are adhered with fireproof plates.