Combinable protective door locking mechanism

Abstract

The utility model relates to the technical field of protective door locking, and particularly discloses a combinable protective door locking mechanism which comprises an installation part, gear transmission boxes are connected to the two sides of the installation part, and transmission assemblies used for transmission of the locking mechanism are connected into the gear transmission boxes. A driving assembly used for opening and closing the locking mechanism is arranged in the mounting piece, and a guide mechanism used for guiding the locking assembly is arranged at the tail end of the transmission assembly. The transmission assembly comprises two sets of transmission rods, and the two sets of transmission rods are connected to the two ends of the gear transmission box correspondingly. Through the transmission assembly, the movable rod on the threaded rod is connected with the other end of the fixed insertion pipe in an inserted mode, the fixed insertion pipe is loosened, the fixed insertion pipe and the movable rod can be pressed under the action of elasticity of a pressing spring, then the function of assembling the mechanism on site is achieved, and transferring or combined use is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of protective door locking mechanism, especially to a kind of combinable protective door locking mechanism. BACKGROUND

[0002] The protective door locking mechanism is a device for ensuring that the protective door remains locked in the closed state, which plays a crucial role in ensuring the safety of work areas or specific locations. The protective door is a door that can resist various shock waves or heavy impact, usually made of steel or steel-reinforced concrete material. It is widely used in current civil defense buildings, factory warehouses and construction sites. The most important function of the protective door is to control the locking process to ensure that the door leaf of the protective door can be stably connected with the door frame in the closed state, achieving the effect of sealing and protection.

[0003] The existing locking mechanism moves towards the center of the passage when opened, which inevitably occupies the passage space. Under the premise of ensuring the effective passage area, the volume of the door leaf and the door frame will inevitably increase, causing waste of cost.

[0004] The existing patent (publication number: CN219794968U) discloses a locking mechanism and a protective door, which includes a driving device and a locking assembly. The driving device drives the locking assembly to move through a transmission mechanism to achieve opening and locking. The locking assembly includes a locking plate that cooperates with the transmission mechanism. It can withstand the rebound force under the action of super-large impact load, prevent the door leaf from being damaged by impact load and cause abnormal opening. The locking drive has two driving forms: hand and flashlight. Since the door leaf locking drive device and the locking cross bar are installed in the door frame around the door body, the explosion impact load is directly transmitted to the door frame.

[0005] To solve the above problems, the existing patent provides a solution that can withstand the rebound force under the action of super-large impact load, prevent the door leaf from being damaged by impact load and cause abnormal opening. However, the entire locking mechanism is designed as a whole, which is inconvenient to assemble or transport, and the replacement of damaged parts is not convenient, which cannot achieve the effect of combination. SUMMARY

[0006] The utility model aims at providing a kind of combinable protective door locking mechanism, the movable rod on screw rod and the other end of fixed insertion tube are inserted and connected, the fixed insertion tube is loosened, under the action of the elasticity of compression spring itself, fixed insertion tube and movable rod can be compressed, to realize the effect of on-site assembly of the mechanism, it is convenient to transport or combination use, to solve the problems raised in the above background technology.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a kind of combinable protective door locking mechanism, including mounting piece, the both sides of the mounting piece are connected with gear transmission box, transmission assembly for the transmission of locking mechanism is connected in the gear transmission box, the inside of the mounting piece is equipped with driving assembly for the opening and closing of locking mechanism, the end of the transmission assembly is equipped with guiding mechanism for the guiding of locking assembly;

[0008] The transmission assembly includes a transmission rod, the transmission rod is provided with two groups, two groups the transmission rod is connected at the both ends of gear transmission box, the end of two groups the transmission rod is fixed with connecting piece, the outer surface of the connecting piece is insertedly connected with fixed insertion tube, the upper surface of the fixed insertion tube is insertedly connected with movable rod.

[0009] Preferably, the upper surface of the movable rod is fixed with a threaded rod, the inside of the fixed insertion tube is abutted and fixed with a compression spring abuttingly connected with the upper surface of the connecting piece.

[0010] Preferably, the driving assembly includes an opening and closing handle, the opening and closing handle is installed at the inside of the mounting piece, the end of the opening and closing handle is fixed with a worm.

[0011] Preferably, one side of the worm is engaged with a worm gear, and the inside of the worm gear is fixed with a connecting rod.

[0012] Preferably, the end of the connecting rod is fixed with a driving helical tooth, and one side of the driving helical tooth is engaged with a driven helical tooth fixedly connected with the transmission rod.

[0013] Preferably, the guiding mechanism includes a threaded tube, the threaded tube is threadedly connected with the outer surface of the threaded rod, and the end of the threaded tube is fixed with a locking plug.

[0014] Preferably, the outer surface of the locking plug is telescopically connected with a limiting seat, and the outer wall of the locking plug is symmetrically fixed with two guide rods insertedly connected with the limiting seat.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1. By setting the transmission assembly, the movable rod on the threaded rod and the other end of the fixed insertion tube are insertedly connected, the fixed insertion tube is loosened, and under the elastic effect of the compression spring itself, the fixed insertion tube and the movable rod can be compressed, thereby realizing the function of on-site assembly of the mechanism, facilitating transportation or combination use.

[0017] 2. By setting the driving assembly, the opening and closing handle is twisted to drive the worm to rotate, the worm engages the worm gear to rotate, under the action of the connecting rod, the driving helical tooth engages the driven helical tooth to rotate, the locking plug moves in the limiting seat and cooperates with the external locking groove, and the opening and closing function is realized. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is an overall structural view of the present invention;

[0020] Figure 2 This is a half-sectional structural diagram of the mounting component of this utility model;

[0021] Figure 3 This is a half-sectional structural diagram of the fixed insertion tube of this utility model;

[0022] Figure 4 This utility model Figure 1 A magnified view of A in the middle.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Mounting component; 2. Gear transmission box; 3. Transmission rod; 31. Connecting component; 32. Fixed insertion tube; 33. Compression spring; 34. Threaded rod; 35. Movable rod; 4. Opening and closing handle; 41. Worm gear; 42. Worm wheel; 43. Connecting rod; 44. Driving helical gear; 45. Driven helical gear; 5. Threaded tube; 51. Locking plug; 52. Limit seat; 53. Guide rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides a technical solution:

[0027] Please see Figures 1 to 4 A combinable protective door locking mechanism includes a mounting component 1, with gear transmission boxes 2 connected to both sides of the mounting component 1. The gear transmission boxes 2 are internally connected to a transmission component for driving the locking mechanism. The mounting component 1 is internally provided with a drive component for opening and closing the locking mechanism. The end of the transmission component is provided with a guide mechanism for guiding the locking component.

[0028] The transmission assembly comprises transmission rods 3, two groups of the transmission rods 3 are connected at two ends of the gear transmission box 2, the ends of the two groups of the transmission rods 3 are fixed with connecting pieces 31, the outer surfaces of the connecting pieces 31 are insertedly connected with fixed insertion tubes 32, the upper surfaces of the fixed insertion tubes 32 are insertedly connected with movable rods 35, the upper surfaces of the movable rods 35 are fixed with threaded rods 34, the interiors of the fixed insertion tubes 32 are abuttedly fixed with compression springs 33 abuttingly connected with the upper surfaces of the connecting pieces 31.

[0029] By adopting the above technical scheme, before the combinable protection door locking mechanism is used, the locking mechanism is first assembled on the protection door, the mounting piece 1 and the gear transmission box 2 are fixed on the protection door, the limiting seat 52 is fixed by aligning with the vertical center line of the gear transmission box 2, one end of the fixed insertion tube 32 with the compression spring 33 is insertedly connected with the connecting piece 31, the other end of the fixed insertion tube 32 is insertedly connected with the movable rod 35 on the threaded rod 34 when the fixed insertion tube 32 is pressed, the fixed insertion tube 32 and the movable rod 35 are compressed under the elasticity of the compression spring 33, and the on-site assembly of the mechanism is realized, so that the transportation or combination use is facilitated.

[0030] Specifically, as shown in Figure 1 , Figure 2 and Figure 4 , the driving assembly comprises an opening and closing handle 4 installed inside the outer side of the mounting piece 1, the end of the opening and closing handle 4 is fixed with a worm 41, one side of the worm 41 is engaged with a worm wheel 42, the inside of the worm wheel 42 is fixed with a connecting rod 43, the end of the connecting rod 43 is fixed with a driving helical gear 44, one side of the driving helical gear 44 is engaged with a driven helical gear 45 fixedly connected with the transmission rod 3, the guide mechanism comprises a threaded tube 5 threadedly connected to the outer surface of the threaded rod 34, the end of the threaded tube 5 is fixed with a locking plug 51, the outer surface of the locking plug 51 is telescopically connected with a limiting seat 52, and the outer wall of the locking plug 51 is symmetrically fixed with two guide rods 53 insertedly connected with the limiting seat 52.

[0031] By adopting the above technical scheme, when in use, the worm 41 is rotated by twisting the opening and closing handle 4, the worm 41 is engaged with the worm wheel 42 to rotate, the driving helical gear 44 is engaged with the driven helical gear 45 to rotate under the action of the connecting rod 43, the transmission rod 3 is driven to rotate, the threaded rod 34 is rotated synchronously when the transmission rod 3 rotates, the threaded tube 5 can move vertically under the action of the threaded connection, the locking plug 51 is driven to move in the limiting seat 52 to cooperate with the external locking groove, the opening and closing effect is realized, and the guide rod 53 moves in the limiting seat 52 when the locking plug 51 moves, and the guiding and limiting effect is realized.

[0032] Working principle: install the mounting 1 and the gear box 2 on the protective door, then fix the limiting seat 52 and the vertical center line of the gear box 2, connect the fixed pipe 32 with one end of the connecting piece 31 on the transmission rod 3, connect the other end of the fixed pipe 32 with the movable rod 35 on the threaded rod 34, under the elasticity of the compression spring 33, the fixed pipe 32 and the movable rod 35 can be compressed, thus realizing the function of on-site assembly of the mechanism, rotating the worm 41 by turning the opening and closing handle 4, the worm 41 meshes with the worm gear 42 to rotate, under the action of the connecting rod 43, the driving helical gear 44 meshes with the driven helical gear 45 to rotate, thus driving the transmission rod 3 to rotate, when the transmission rod 3 rotates, the threaded rod 34 rotates synchronously, under the action of the threaded pipe 5, the threaded pipe 5 can move vertically, the locking plug 51 moves in the limiting seat 52 to realize the opening and closing function.

[0033] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A combinable security door locking mechanism comprising a mounting member (1), characterised in that: Both sides of the mounting piece (1) are connected with gear transmission boxes (2), transmission assemblies for driving the locking mechanism are connected inside the gear transmission boxes (2), the inside of the mounting piece (1) is provided with a driving assembly for opening and closing the locking mechanism, the end of the transmission assembly is provided with a guide mechanism for guiding the locking assembly; The transmission assembly comprises two groups of transmission rods (3), the two groups of transmission rods (3) are connected at the two ends of the gear transmission boxes (2) respectively, the ends of the two groups of transmission rods (3) are fixedly connected with connecting pieces (31), the outer surfaces of the connecting pieces (31) are connected in insertion with fixed insertion tubes (32), the upper surfaces of the fixed insertion tubes (32) are connected in insertion with movable rods (35).

2. A combinable security door lock mechanism according to claim 1, wherein: The upper surfaces of the movable rods (35) are fixedly connected with threaded rods (34), the interiors of the fixed insertion tubes (32) are abutted and fixedly connected with compression springs (33) abutting the upper surfaces of the connecting pieces (31).

3. A combinable security door lock mechanism according to claim 1, wherein: The driving assembly comprises an opening and closing handle (4), the opening and closing handle (4) is installed at the inside of the mounting piece (1), the end of the opening and closing handle (4) is fixedly connected with a worm (41).

4. A combinable security door closure mechanism according to claim 3, wherein: One side of the worm (41) is engaged with a worm wheel (42), the inside of the worm wheel (42) is fixedly connected with a connecting rod (43).

5. A combinable security door closure mechanism according to claim 4, wherein: The end of the connecting rod (43) is fixedly connected with a driving helical tooth (44), one side of the driving helical tooth (44) is engaged with a driven helical tooth (45) fixedly connected with the transmission rod (3).

6. A combinable security door lock mechanism according to claim 1, wherein: The guide mechanism comprises a threaded tube (5), the threaded tube (5) is screw-connected on the outer surface of the threaded rod (34), the end of the threaded tube (5) is fixedly connected with a locking plug (51).

7. A combinable security door closure mechanism according to claim 6 wherein: The outer surface of the locking plug (51) is connected in expansion with a limiting seat (52), the outer wall of the locking plug (51) is symmetrically fixedly connected with two guide rods (53) inserted with the limiting seat (52).

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