Civil air defense door composite frame

Abstract

The utility model relates to the field of civil air defense doors, and particularly discloses a civil air defense door composite frame which comprises a door frame. The first frames are symmetrically arranged at the two ends of the door frame; the second frames are symmetrically arranged at the two ends of the door frame; a mounting cavity is formed in the first frame, a rotating rod is mounted in the mounting cavity, fixing devices used for locking the door frame are symmetrically arranged on the rotating rod, and each fixing device comprises a gear fixedly arranged on the rotating rod, a rack movably arranged in the mounting cavity and meshed with the gear and a locking rod arranged in the door frame; the first frame is provided with a lock groove matched with the lock rod, the lock groove communicates with the mounting cavity, and by rotating the rotating rod, one end of the rack penetrates through the lock groove to extrude the lock rod out of the lock groove so that the door frame and the first frame can be unlocked. The civil air defense door has the effect of facilitating installation of the civil air defense door.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of civil air defense doors, in particular to a composite frame of a civil air defense door. BACKGROUND

[0002] The civil air defense door is a door of an entrance of a civil air defense project. The civil air defense door is classified into various types, such as a single or double-leaf protective airtight door, a single or double-leaf airtight door, and a single or double-leaf airtight door with a movable threshold.

[0003] At present, the existing civil air defense door is generally thick, heavy and large in size, and is inconvenient to transport and install. In addition, the existing civil air defense door is of an integral structure, and is inconvenient to operate during installation, disassembly and maintenance. CONTENT OF THE INVENTION

[0004] In order to facilitate the installation of the civil air defense door, the present application provides a composite frame of a civil air defense door.

[0005] The composite frame of the civil air defense door provided by the present application adopts the following technical solution:

[0006] The composite frame of the civil air defense door comprises:

[0007] a door frame;

[0008] a first side frame symmetrically arranged at two ends of the door frame;

[0009] a second side frame symmetrically arranged at the two ends of the door frame;

[0010] The first side frame is internally provided with a mounting cavity, and a rotating rod is mounted in the mounting cavity. A fixing device for locking the door frame is symmetrically arranged on the rotating rod. The fixing device comprises a gear fixed on the rotating rod, a rack movably arranged in the mounting cavity and engaged with the gear, and a lock rod arranged in the door frame. A lock groove matched with the lock rod is formed in the first side frame, and the lock groove is in communication with the mounting cavity. The lock rod is extruded out of the lock groove by rotating the rotating rod to make one end of the rack pass through the lock groove, so as to unlock the door frame and the first side frame.

[0011] When unlocking is required, the rotating rod is rotated clockwise, the gear drives the rack to move, one end of the rack abuts against the lock rod, and the lock rod is moved out of the lock groove, so as to unlock the door frame and the first side frame.

[0012] In a possible implementation, a first accommodating cavity is formed in the door frame, and the lock rod is located in the first accommodating cavity. The fixing device further comprises a fixing block fixed in the first accommodating cavity, and the lock rod penetrates through the fixing block.

[0013] In a possible implementation, the fixing device further comprises a first locking ring fixedly arranged on one end of the locking rod, a second locking ring movably sleeved on the locking rod, a limiting ring fixedly arranged on the locking rod, and a first elastic member arranged between the fixed block and the limiting ring; the second locking ring is located between the first locking ring and the limiting ring.

[0014] In a possible implementation, a groove is formed on one end of the first locking ring close to the second locking ring, and the second locking ring is accommodated in the groove.

[0015] In a possible implementation, the fixing device further comprises a fixing plate fixedly arranged on the door frame, a first connecting rod movably penetrating through the fixing plate, a locking block fixedly arranged on the first connecting rod, and a third elastic member arranged between the fixing plate and the first connecting rod, wherein the locking block is located between the first locking ring and the second locking ring.

[0016] In a possible implementation, the cross section of the first locking ring gradually decreases from one end to the other end, the second locking ring has a first inclined surface and a second inclined surface, and the locking block is provided with a third inclined surface matched with the first inclined surface and the second inclined surface.

[0017] In a possible implementation, the fixing device further comprises a support plate fixedly arranged in the mounting cavity, a pin shaft rotatably arranged on the support plate, and an auxiliary wheel fixedly arranged on the pin shaft, wherein the auxiliary wheel is in frictional engagement with the rack.

[0018] In a possible implementation, the two ends of the rotating rod are provided with through cavities, the through cavities are fixedly arranged with connecting rings, the connecting rings are arranged with second connecting rods, the second side frame is arranged with a connecting plate, the connecting plate is inserted into the first side frame, and the connecting plate is arranged with a clamping groove for the second connecting rod to be inserted.

[0019] In a possible implementation, the second connecting rod is movably penetrated into the connecting ring and is in threaded connection with the connecting ring.

[0020] In a possible implementation, the door frame is two, and the inner sides of the two door frames are rotatably connected with hinges at upper and lower ends.

[0021] In summary, the present application has the following beneficial technical effects:

[0022] 1. When the door frame needs to be explained, the rotating rod is rotated clockwise, the gear drives the rack to move, one end of the rack abuts against the locking rod, and the locking rod is moved out of the locking groove, so that the door frame and the first side frame are explained.

[0023] 2. When the first side frame and the second side frame need to be explained, the rotating rod is counterclockwise rotated, the rotating rod drives the connecting ring to rotate, the connecting ring is in threaded connection with the second connecting rod, the second connecting rod is moved, and the second connecting rod is separated from the clamping groove, so that the first side frame and the second side frame are in disengaged relationship, and the first side frame and the second side frame are convenient for installation, disassembly, maintenance and carrying. Attached Figure Description

[0024] Figure 1 This is an overall schematic diagram based on an embodiment of this application;

[0025] Figure 2 This is a cross-sectional schematic diagram of an embodiment, mainly showing the structure of the fixing device;

[0026] Figure 3 yes Figure 2 An enlarged schematic diagram of part A;

[0027] Figure 4 This is a cross-sectional schematic diagram of an embodiment, mainly showing the second fixing device structure;

[0028] Figure 5 yes Figure 5 An enlarged schematic diagram of part B;

[0029] Figure 6 yes Figure 4 An enlarged schematic diagram of part C.

[0030] Reference numerals: 1. Frame; 2. First frame; 3. Second frame; 4. Hinge; 5. Mounting cavity; 6. Rotating rod; 7. Gear; 8. Rack; 9. Locking rod; 10. Lock groove; 11. First receiving cavity; 12. Rotating shaft; 13. Opening; 14. Fixing block; 15. First locking ring; 16. Second locking ring; 17. Limiting ring; 18. First elastic element; 19. Second elastic element; 20. Groove; 21. Fixing plate; 22. First connecting rod; 23. Locking block; 24. Third elastic element; 25. Second receiving cavity; 26. First inclined surface; 27. Second inclined surface; 28. Third inclined surface; 29. ​​Support plate; 30. Pin shaft; 31. Auxiliary wheel; 32. Through cavity; 33. Connecting ring; 34. Second connecting rod; 35. Connecting plate; 36. Slot. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1-6 This application will be described in further detail.

[0032] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0033] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0034] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or it can only mean that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or it can only mean that the horizontal height of the first feature is less than that of the second feature.

[0035] Reference Figures 1-6 , the composite frame of the civil air defense door, including door frame 1, first frame 2, second frame 3, fixing device; door frame 1 is two, the inner side of the two door frames 1 is rotatably connected with the hinge 4 on the upper and lower ends, the first frame 2 and the second frame 3 are respectively arranged on the side wall of the door frame 1. The first frame 2 is provided with an installation cavity 5, a rotating rod 6 is installed in the installation cavity 5, and the rotating rod 6 is provided with a fixing device for locking the door frame 1. Specifically, the fixing device includes a gear 7, a rack 8, a lock rod 9 and a lock slot 10; the gear 7 is fixedly arranged on the rotating rod 6, the rack 8 is movably arranged in the installation cavity 5 and engaged with the gear 7, a first accommodating cavity 11 is formed in the door frame 1, the lock rod 9 is arranged in the first accommodating cavity 11, and the first frame 2 is provided with a lock slot 10 matched with the lock rod 9, the lock slot 10 is communicated with the installation cavity 5, and the lock rod 9 is extruded out of the lock slot 10 by rotating the rotating rod 6 to make the rack 8 pass through the lock slot 10 to unlock the door frame 1 and the first frame 2. When it is necessary to explain, rotate the rotating rod 6 clockwise, make the gear 7 drive the rack 8 to move, one end of the rack 8 abuts on the lock rod 9, and drive the lock rod 9 to move out of the lock slot 10, so as to explain the door frame 1 and the first frame 2. Thus, it is convenient to install, disassemble, maintain and transport the door frame 1 and the first frame 2.

[0036] The rotating rod 6 is provided with a rotating shaft 12, which is convenient for rotating the rotating rod 6. The first frame 2 is provided with an opening 13, and the opening 13 corresponds to the rotating shaft 12, so that the rotating shaft 12 is manually rotated through the opening 13.

[0037] The fixing device further comprises a fixing block 14, a first locking ring 15, a second locking ring 16, a limiting ring 17, a first elastic member 18, and a second elastic member 19. The fixing block 14 is fixedly arranged in the first accommodating cavity 11, the locking rod 9 is movably arranged through the fixing block 14, the first locking ring 15 is fixedly arranged on one end of the locking rod 9, the second locking ring 16 is movably sleeved on the locking rod 9, the limiting ring 17 is fixedly arranged on the locking rod 9, the first elastic member 18 is a spring, one end of which is connected to the fixing block 14 and the other end of which is connected to the limiting ring 17, the second elastic member 19 is a spring, one end of which is connected to the limiting ring 17 and the other end of which is connected to the second locking ring 16, and the second locking ring 16 is located between the first locking ring 15 and the limiting ring 17. A groove 20 for accommodating the second locking ring 16 is formed on one end of the first locking ring 15 close to the second locking ring 16.

[0038] The fixing device further comprises a fixing plate 21, a first connecting rod 22, a locking block 23, and a third elastic member 24. The door frame 1 is provided with a second accommodating cavity 25 in communication with the first accommodating cavity 11, the fixing plate 21 is fixedly arranged in the second accommodating cavity 25, the first connecting rod 22 is movably arranged through the fixing plate 21, the locking block 23 is fixedly arranged on the first connecting rod 22, and the third elastic member 24 is a spring, one end of which is connected to the fixing plate 21 and the other end of which is connected to the first connecting rod 22. The locking block 23 is located between the first locking ring 15 and the second locking ring 16. The cross section of the first locking ring 15 gradually decreases from one end to the other end, the second locking ring 16 is provided with a first inclined surface 26 and a second inclined surface 27, and the locking block 23 is provided with a third inclined surface 28 matched with the first inclined surface 26 and the second inclined surface 27. When the rack 8 drives the locking rod 9 to move, the first elastic member 18 is stretched, and the locking block 23 moves to one end of the second locking ring 16 under the action of the third inclined surface 28 and the first inclined surface 26 and the second inclined surface 27. When the locking rod 9 loses the pushing force, the locking rod 9 reciprocates under the reset of the first elastic member 18, the locking block 23 moves from one end of the second locking ring 16 to one end of the first locking ring 15 and then moves from the second locking ring 16 to between the first locking ring 15 and the second locking ring 16. In this process, the movement of the locking block 23 drives the second locking ring 16 to move into the groove 20 of the first locking ring 15, and when the locking block 23 is not in contact with the second locking ring 16, the second locking ring 16 is reset under the action of the second elastic member 19.

[0039] The fixing device further comprises a support plate 29, a pin shaft 30, and an auxiliary wheel 31. The support plate 29 is fixedly arranged in the mounting cavity 5, the pin shaft 30 is rotatably arranged on the support plate 29, and the auxiliary wheel 31 is fixedly arranged on the pin shaft 30. The auxiliary wheel 31 is in frictional cooperation with the rack 8. The rack 8 is supported by the auxiliary wheel 31.

[0040] Two ends of the rotating rod 6 are provided with through cavities 32, the through cavities 32 are fixedly provided with connecting rings 33, the connecting rings 33 are provided with second connecting rods 34, the second frame 3 is provided with connecting plates 35, the connecting plates 35 are inserted into the first frame 2, the connecting plates 35 are provided with clamping grooves 36 for the second connecting rods 34 to be inserted. The second connecting rods 34 are movably arranged in the connecting rings 33 and are threadedly connected with the connecting rings 33. When the first frame 2 and the second frame 3 need to be explained, the rotating rod 6 is counterclockwise rotated, the rotating rod 6 drives the connecting ring 33 to rotate, the connecting ring 33 is threadedly connected with the second connecting rod 34, the second connecting rod 34 is moved, the second connecting rod 34 is separated from the clamping groove 36, so that the first frame 2 and the second frame 3 are separated from the clamping relationship, thereby facilitating the installation, disassembly, maintenance and carrying of the first frame 2 and the second frame 3.

[0041] In the description of the embodiments of the present application, it should be noted that in the description of the present application, the terms indicating the direction or position relationship are based on the direction or position relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or member must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0042] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "in this embodiment", "specific examples" or "some examples" means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0043] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A composite frame for a civil defense door, characterized in that: The utility model provides a kind of composite frame of civil air defense door, including: Portal (1); First frame (2), symmetrically arranged on the both ends of the portal (1); Second frame (3), symmetrically arranged on the both ends of the portal (1); The first frame (2) is provided with mounting cavity (5) in, the mounting cavity (5) is mounted with rotating rod (6), the rotating rod (6) is symmetrically provided with the fixing device for locking the portal (1) on, the fixing device includes gear (7) fixed on the rotating rod (6), rack (8) movably arranged in the mounting cavity (5) and with the gear (7) is engaged, lock rod (9) arranged in the portal (1);The first frame (2) is provided with lock slot (10) matched with the lock rod (9), the lock slot (10) is communicated with the mounting cavity (5), by rotating rotating rod (6) makes the rack (8) one end pass through lock slot (10) with the lock rod (9) extruded to the outside of lock slot (10) to make the portal (1) with the first frame (2) unlock.

2. The composite frame of civil air defense door according to claim 1, wherein: The portal (1) is provided with a first accommodating cavity (11) therein, and the lock rod (9) is located in the first accommodating cavity (11); the fixing device further comprises a fixing block (14) fixed in the first accommodating cavity (11), and the lock rod (9) penetrates through the fixing block (14) movably arranged on the fixing block (14).

3. The composite frame of civil air defense door according to claim 2, wherein: The fixing device further comprises a first lock ring (15) fixed on one end of the lock rod (9), a second lock ring (16) movably sleeved on the lock rod (9), a limiting ring (17) fixed on the lock rod (9), and a first elastic member (18) arranged between the fixing block (14) and the limiting ring (17); the second lock ring (16) is located between the first lock ring (15) and the limiting ring (17).

4. The composite frame of civil air defense door according to claim 3, wherein: The first lock ring (15) is provided with a groove (20) for accommodating the second lock ring (16) on one end close to the second lock ring (16).

5. The composite frame of civil air defense door according to claim 4, wherein: The fixing device further comprises a fixing plate (21) fixed on the portal (1), a first connecting rod (22) movably penetrating through the fixing plate (21), a lock block (23) fixed on the first connecting rod (22), and a third elastic member (24) arranged between the fixing plate (21) and the first connecting rod (22); the lock block (23) is located between the first lock ring (15) and the second lock ring (16).

6. The composite frame of civil air defense door according to claim 5, wherein: The cross section of the first lock ring (15) gradually decreases from one end to the other end; the second lock ring (16) is provided with a first inclined surface (26) and a second inclined surface (27); and the lock block (23) is provided with a third inclined surface (28) matched with the first inclined surface (26) and the second inclined surface (27).

7. The compound frame of the civil air defense door according to claim 2, characterized in that: The fixing device further comprises a support plate (29) fixed in the installation cavity (5), a pin shaft (30) rotatably arranged on the support plate (29), and an auxiliary wheel (31) fixed on the pin shaft (30), the auxiliary wheel (31) being in frictional engagement with the rack (8).

8. The compound frame of the civil air defense door according to claim 1, characterized in that: Both ends of the rotating rod (6) are provided with through cavities (32), the through cavities (32) are fixedly provided with connecting rings (33), the connecting rings (33) are provided with second connecting rods (34), the second side frame (3) is provided with connecting plates (35), the connecting plates (35) are inserted into the first side frame (2), and the connecting plates (35) are provided with clamping grooves (36) for the second connecting rods (34) to be inserted.

9. The compound frame of the civil air defense door according to claim 8, characterized in that: The second connecting rods (34) are movably arranged in the connecting rings (33) and are in threaded connection with the connecting rings (33).

10. The compound frame of the civil air defense door according to claim 1, characterized in that: The door frames (1) are two, and the inner sides of the two door frames (1) are rotatably connected with hinges (4) at upper ends and lower ends.

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