Convenient locking and positioning device for civil air defense doors

Abstract

The present invention discloses a convenient locking and positioning device for civil air defense doors, comprising a civil air defense door, two connecting rod assemblies, a handle linkage device, two locking and positioning assemblies, and an infrared ranging device, wherein the connecting rod assembly and the handle linkage device are mounted on the civil air defense door, the locking and positioning assembly is a set of special-shaped spring leaves, namely a lower spring leaf mounted on the handle linkage device and an upper spring leaf mounted on the connecting rod assembly; the upper and lower spring leaves are fixed to the connecting rod assembly and the handle linkage device by welding; the upper and lower spring leaves are made of high-hardness, high-wear-resistant, and high-fatigue-resistant alloy steel; the connecting rod assembly comprises a middle link, two connecting rods, two connecting rod heads, and two sets of lock heads, wherein the two connecting rods are symmetrically connected at both ends of the middle link, each connecting rod head is mounted at the other end of the corresponding connecting rod, and the lock heads are connected to the corresponding connecting rod heads. This structure is simple, easy to install, and reduces production costs.

Description

Technical Field

[0001] The present invention relates to the technical field of civil air defense doors, in particular to a portable locking and positioning device dedicated to civil air defense doors. Background Art

[0002] Civil air defense doors are used as entrances and exits for civil defense projects. They include standard single- and double-leaf protective and sealed doors, as well as single- and double-leaf protective and sealed doors with movable thresholds. In existing technologies, manual doors feature handles connected to the inner and outer leaves of each leaf. The inner handle rotates with a vertical connecting rod equipped with a lock. The handle drives the connecting rod connected to the handle up and down, thereby rotating the lock connected to the connecting rod, separating or closing the lock from the door frame, ultimately opening or closing the civil air defense door.

[0003] At present, reinforced concrete single-leaf protective sealed doors, single-leaf sealed doors, steel structure single-leaf protective sealed doors, and single-leaf sealed doors are generally locked using strong magnets, magnetic conductive plates, non-magnetic conductive plates, and magnet fixing frames. They are positioned by strong magnetic positioning. This positioning method has high production costs and complex production processes. During use, it is often impossible to effectively position the door, and the reliability is not high. In particular, strong magnets are fragile and may be lost after installation. Summary of the Invention

[0004] The purpose of the present invention is to provide a convenient locking and positioning device for civil defense doors to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solution: it includes a civil defense door, two groups of connecting rod assemblies, a handle linkage device, two groups of locking positioning assemblies and an infrared ranging device, wherein the connecting rod assembly and the handle linkage device are installed on the civil defense door, and the locking positioning assembly is a group of special-shaped spring sheets, which are respectively a lower spring sheet arranged on the handle linkage device and an upper spring sheet arranged on the connecting rod assembly.

[0006] Furthermore, the upper spring leaf and the lower spring leaf are fixed to the connecting rod assembly and the handle linkage device by welding; the upper spring leaf and the lower spring leaf are made of alloy steel material with high hardness, high wear resistance, high toughness and high fatigue resistance.

[0007] Furthermore, the connecting rod assembly includes a middle connection, two connecting rods, two connecting rod heads and two sets of locking heads, wherein the two connecting rods are symmetrically connected at both ends of the middle connection, each connecting rod head is arranged at the other end of the corresponding connecting rod, and the locking head is connected to the corresponding connecting rod head.

[0008] Furthermore, each group of lock heads includes a connecting part, a fixing part and a locking part, wherein the connecting part and the locking part are arranged on both sides of the fixing part, the connecting part is rotatably matched with the corresponding connecting rod head, and the fixing part is fixed to the civil defense door as a whole through a thin nut; the lock head is driven by the connecting rod to rotate to change the orientation of the locking part, thereby achieving locking or opening.

[0009] Furthermore, the handle linkage device includes a handle assembly and a drive assembly, wherein the drive assembly is arranged on the handle assembly.

[0010] Furthermore, the handle assembly includes an outer handle, a connecting shaft and an inner handle, wherein the connecting shaft is passed through the civil defense door, and the outer handle and the inner handle are sleeved on both ends of the connecting shaft.

[0011] Furthermore, the drive assembly includes a main gear, a slave gear, and two groups of rack groups that respectively cooperate with the main gear and the slave gear, wherein the main gear and the slave gear teeth cooperate, and the rack group includes a rack, a slide rod and two fixed seats, each rack is passed through the corresponding slide rod and cooperates with the main gear and the slave gear teeth, and the fixed seat is fixed on the civil defense door and is sleeved on both ends of the corresponding slide rod.

[0012] Furthermore, the infrared ranging device includes a slide rail and two groups of infrared ranging components, wherein the infrared ranging components are arranged on the slide rail; the infrared ranging components include an electric push rod, an infrared rangefinder and a display light group, the electric push rod is suitable for pushing the infrared rangefinder to move on the slide rail, and the display light group is electrically connected to the infrared rangefinder.

[0013] Furthermore, the specific embodiments of the present invention are as follows:

[0014] The specific usage is as follows:

[0015] S1. Normal locking: The connecting rod assembly and the handle linkage device are in a generally static state under the influence of gravity. Each lock head is subjected to the downward pulling force of the connecting rod assembly. Due to the length of the connection being limited to an extreme position, each lock head can just lock into the lock slot set on one side of the door frame, and the civil air defense door is locked normally.

[0016] S2. Manual unlocking: When either the inner handle or the outer handle in the driving handle linkage device moves, the connecting rod assemblies on both sides are synchronously driven upward through the driving assembly. At this time, the lock head rotates, each lock head deviates from the lock slot, and the civil air defense door opens.

[0017] S3. Positioning: During the manual unlocking process, the locking positioning assembly set on the connecting rod assembly and the handle linkage device starts to move, and the upper spring leaf and the lower spring leaf approach each other. When they reach a certain position, the head of the upper spring leaf will be locked on the waist of the lower spring leaf, and the connecting rod assembly and the handle linkage device are precisely positioned and connected.

[0018] S4. Manual locking: Apply force to the locking positioning assembly through the handle linkage device to separate the upper spring leaf and the lower spring leaf, reset the connecting rod assembly and the handle linkage device, and lock the civil air defense door.

[0019] S5. Detection: After closing the civil air defense door, use the display light group to check whether there are any obstacles left in the door frame gap and clear them in time.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] By providing a locking positioning assembly, the upper spring leaf and the lower spring leaf are fixed on the connecting rod assembly and the handle linkage device respectively. Compared with the conventional civil defense door positioning device which is generally a strong magnetic positioning or a spring positioning pin positioning, this type of positioning structure is complex and costly, and is accompanied by the situation that the locking positioning fails due to the excessive weight of the lock itself.

[0022] By providing a handle linkage device, the two sets of connecting rods can be driven to move synchronously. The overall linkage structure is simple and the required cost is low.

[0023] By installing an infrared ranging device, the gap between the door frame and obstacles of the civil air defense door can be monitored at any time to avoid damage when the civil air defense door is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a partial schematic diagram of the present invention;

[0027] Figure 3 is a schematic diagram of a connecting rod assembly of the present invention;

[0028] Figure 4 It is a rear view of the present invention;

[0029] Figure 5 This is a schematic diagram of the locking positioning assembly of the present invention in a separated state;

[0030] Figure 6 This is a schematic diagram of the locking positioning assembly of the present invention in a closed state;

[0031] In the figure: 1. Civil defense door; 2. Connecting rod assembly; 21. Middle connection; 22. Connecting rod; 23. Connecting rod head; 24. Lock head; 241. Connecting part; 242. Fixing part; 243. Lock head; 3. Handle linkage device; 31. Handle assembly; 311. Outer handle; 312. Connecting shaft; 313. Inner handle; 32. Driving assembly; 321. Main gear; 322. Slave gear; 323. Rack assembly; 3231. Rack; 3232. Slide rod; 3233. Fixed seat; 4. Locking positioning assembly; 41. Upper spring sheet; 411. Waist; 42. Lower spring sheet; 421. Head; 5. Infrared ranging device; 51. Slide rail; 52. Infrared ranging assembly; 521. Electric push rod; 522. Infrared rangefinder; 523. Display light assembly; 6. Thin nut. DETAILED DESCRIPTION

[0032] The following is a non-limiting detailed description of the technical solutions of the present invention in conjunction with preferred embodiments and the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0033] See also Figure 1-6 The present invention provides a technical solution: a convenient locking and positioning device dedicated to civil defense doors, comprising a civil defense door 1, two sets of connecting rod assemblies 2, a handle linkage device 3, two sets of locking and positioning assemblies 4 and an infrared ranging device 5, wherein the connecting rod assembly 2, the handle linkage device 3 and the infrared ranging device are installed on the civil defense door 1, and the locking and positioning assembly 4 is a group of special-shaped spring sheets, which are an upper spring sheet 41 arranged on the connecting rod assembly 2 and a lower spring sheet 42 arranged on the handle linkage device 3.

[0034] In actual operation, in the closed state of the civil defense door, the upper spring leaf 41 and the lower spring leaf 42 are separated from each other, and the connecting rod assembly 2 and the handle linkage device 3 are in a general static state under the influence of gravity; when it needs to be opened, the handle linkage device 3 is rotated clockwise to make the upper spring leaf 41 and the lower spring leaf 42 approach until the waist 411 of the upper spring leaf 41 is firmly locked on the head 421 of the lower spring leaf 42. At this time, the handle linkage device 3 is driven to drive the connecting rod assembly 2 to move upward; when it is necessary to separate the upper spring leaf 41 and the lower spring leaf 42, the handle linkage device 3 is driven counterclockwise to drive the upper spring leaf 41 and the lower spring leaf 42 to move downward. When they reach an extreme position, the upper spring leaf 41 and the lower spring leaf 42 are separated from each other by force, and the connecting rod assembly 2 returns to the locked position, thereby realizing the locking of the civil defense door.

[0035] It should be noted that the upper spring leaf 41 and the lower spring leaf 42 are fixed to the connecting rod assembly 2 and the handle linkage 3 by, but not limited to, welding. The upper spring leaf 41 and the lower spring leaf 42 are made of a material with high hardness, high wear resistance, high toughness, and high fatigue resistance, such as alloy steel. Unlike mainstream strong magnetic positioning devices, this positioning device has a simple structure, extremely low cost, and is extremely versatile. It is applicable to all steel structures, reinforced concrete single-leaf protective closed doors, and closed doors. It is easy to install, and there is no need to consider the positioning structure of different specifications of civil air defense doors. It avoids the situation where strong magnetic and spring positioning pin positioning structures can cause the locking position to fail due to the excessive weight of the locking itself, and can ensure the positioning success rate and is more stable.

[0036] The connecting rod assembly 2 includes a middle connection 21, two connecting rods 22, two connecting rod heads 23 and two sets of lock heads 24, wherein the two connecting rods 22 are symmetrically connected at both ends of the middle connection 21, each connecting rod head 23 is arranged at the other end of the corresponding connecting rod 22, and the lock head 24 is connected to the corresponding connecting rod head 23.

[0037] Each set of lock heads 24 includes a connecting portion 241, a fixing portion 242 and a lock head portion 243, wherein the connecting portion 241 and the lock head portion 243 are arranged on both sides of the fixing portion 242, the connecting portion 241 rotates with the corresponding connecting rod head 23, and the fixing portion 242 is fixed to the civil defense door 1 as a whole through a thin nut 6. It should be noted that: the lock head 24 is driven by the connecting rod 22 to rotate to change the orientation of the lock head portion 243, thereby achieving locking or opening.

[0038] The handle linkage device 3 includes a handle assembly 31 and a drive assembly 32 , wherein the drive assembly 32 is disposed on the handle assembly 31 and is driven by the handle assembly 31 .

[0039] The handle assembly 31 includes an outer handle 311, a connecting shaft 312, and an inner handle 313. The connecting shaft 312 is provided on the civil air defense door 1, and the outer handle 311 and the inner handle 313 are sleeved on both ends of the connecting shaft 312. It should be noted that the outer handle 311 and the inner handle 313 are preferably circular in shape to provide support. Rotating either handle can link the other handle via the connecting shaft 312.

[0040] The driving assembly 32 includes a main gear 321, a slave gear 322, and two groups of rack groups 323 respectively cooperating with the main gear 321 and the slave gear 322. The main gear 321 and the slave gear 322 are engaged with each other, wherein the rack group 323 includes a rack 3231, a slide rod 3232 and two fixed seats 3233. Each rack 3231 is passed through the corresponding slide rod 3232 and is engaged with the main gear 321 and the slave gear 322. The fixed seat 3233 is fixed on the civil defense door 1 and is sleeved on both ends of the corresponding slide rod 3232.

[0041] In actual operation, by driving the outer handle 311 or the inner handle 313, the main gear 321 on the connecting shaft 312 rotates. The main gear 321 simultaneously drives the corresponding rack 3231 and the slave gear 322. The slave gear 322 drives the corresponding rack 3231, causing the two sets of racks 3231 to move synchronously. This linkage structure is simple and can achieve synchronous movement of the two drive assemblies 32.

[0042] The infrared distance measuring device 5 includes a slide rail 51 and two sets of infrared distance measuring components 52, wherein the infrared distance measuring components 52 are arranged on the slide rail 51. The infrared distance measuring components 52 include an electric push rod 521, an infrared rangefinder 522, and a display light group 523. The electric push rod 521 is suitable for pushing the infrared rangefinder 522 to move on the slide rail 51, and the display light group 523 is electrically connected to the infrared rangefinder 522.

[0043] In actual operation, the civil air defense door 1 pauses at a certain position before closing (the actual distance is manually set). The electric push rod 521 is controlled by an external control module to drive the infrared rangefinder 522 to move and scan the area below the civil air defense door 1. By measuring the distance between the infrared rangefinder 522 and the door frame, it is determined whether there is a hard object in the door frame. If there is a hard object, the distance measured by the infrared rangefinder 522 is actually the distance between the infrared rangefinder 522 and the hard object, which should be less than the distance between the infrared rangefinder 522 and the door frame. At this time, the display light group 523 lights up red. If the actual measured distance is equal to the distance between the infrared rangefinder 522 and the door frame, there is no hard object left. At this time, the display light group 523 lights up green. This can effectively prevent obstacles in the door frame gap from causing damage to the civil air defense door 1 when the civil air defense door 1 is closed.

[0044] The specific usage is as follows:

[0045] S1. Normal locking: The connecting rod assembly 2 and the handle linkage device 3 are in a general static state under the influence of gravity. Each lock head 24 is subjected to the downward pulling force of the connecting rod assembly 2. Since the length of the connecting portion 241 is limited to an extreme position, at this time each lock head 243 can just be locked into the lock groove set on one side of the door frame, and the civil air defense door is locked normally.

[0046] S2. Manual unlocking: When either the inner handle 313 or the outer handle 311 in the driving handle linkage device 3 is actuated, the connecting rod assemblies 2 on both sides are synchronously driven upward by the driving assembly 32. At this time, the lock head 24 rotates, and each lock part 243 deviates from the lock slot, and the civil air defense door is opened.

[0047] S3. Positioning: During the manual unlocking process, the locking positioning assembly 4 arranged on the connecting rod assembly 2 and the handle linkage device 3 starts to move, and the upper spring piece 41 and the lower spring piece 42 approach each other. When they reach a certain position, the head 411 of the upper spring piece 41 will be locked on the waist 421 of the lower spring piece 42, and the connecting rod assembly 2 and the handle linkage device 3 are accurately positioned and connected.

[0048] S4. Manual locking: Apply force to the locking positioning assembly 4 through the handle linkage device 3 to separate the upper spring piece 41 and the lower spring piece 42, and the connecting rod assembly 2 and the handle linkage device 3 are reset, and the civil air defense door is locked.

[0049] S5. Detection: After closing the civil air defense door 1, the display light group 523 can be used to detect whether there are any obstacles left in the door frame gap and clear them in time.

[0050] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0051] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the aforementioned embodiments, or that some of the technical features may be replaced with equivalents. Such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. Portable locking and positioning device for civil air defense doors, characterized by: include: Civil defense door (1); A connecting rod assembly (2) is mounted on the civil air defense door (1); The connecting rod assembly (2) comprises: Middle Link (21); Two connecting rods (22) are symmetrically connected to both ends of the middle link (21); Two connecting rod heads (23) are provided at the other ends of the corresponding connecting rods (22); and Two sets of lock heads (24) are connected to corresponding connecting rod heads (23); A handle linkage device (3) is installed on the civil air defense door (1); The locking positioning assembly (4) is a set of special-shaped spring sheets, each comprising an upper spring sheet (41) provided on the connecting rod assembly (2) and a lower spring sheet (42) provided on the handle linkage device (3), wherein: The upper spring piece (41) has a head (411) extending toward the lower spring piece (42); The lower spring sheet (42) has a waist portion (421) that cooperates with the head portion (411), and when the civil air defense door is in an open state, the head portion (411) and the waist portion (421) are locked; An infrared distance measuring device (5) is arranged on the civil air defense door (1).

2. The portable locking and positioning device for civil air defense doors according to claim 1, characterized in that: The upper spring piece (41) and the lower spring piece (42) are connected by welding.

3. The portable locking and positioning device for civil air defense doors according to claim 1, characterized in that: The upper spring piece (41) and the lower spring piece (42) are made of alloy steel material with high hardness, high wear resistance, high toughness and high fatigue resistance.

4. The portable locking and positioning device for civil air defense doors according to claim 3 is characterized in that: The lock (24) comprises: A connecting portion (241) rotatably engaged with the connecting rod head (23); A fixing portion (242) is provided on one side of the connecting portion (241); The locking portion (243) is arranged on the other side of the fixing portion (242).

5. The portable locking and positioning device for civil air defense doors according to claim 4 is characterized in that: The fixing portion (242) rotates and mounts the connecting rod assembly (2) as a whole on the civil air defense door (1) via a thin nut (6).

6. The portable locking and positioning device for civil air defense doors according to claim 5, characterized in that: The handle linkage device (3) comprises a handle assembly (31) and a drive assembly (32) arranged on the handle assembly (31), wherein The handle assembly (31) comprises: outer handle (311); A connecting shaft (312) is passed through the civil air defense door (1) and one end of which is sleeved with the outer handle (311); and The inner handle (313) is sleeved on the other end of the connecting shaft (312).

7. The portable locking and positioning device for civil air defense doors according to claim 6, characterized in that: The drive assembly (32) comprises: Main gear (321); A slave gear (322) is engaged with the teeth of the master gear (321); Two rack sets (323) are respectively arranged in cooperation with the main gear (321) and the slave gear (322); wherein Each rack assembly (323) comprises a rack (3231), a slide bar (3232) and two fixed seats (3233); each rack (3231) is passed through the corresponding slide bar (3232) and cooperates with the teeth of the main gear (321) and the slave gear (322); the fixed seats (3233) are fixed on the civil air defense door (1) and are sleeved on both ends of the corresponding slide bar (3232).

8. The portable locking and positioning device for civil air defense doors according to claim 7, characterized in that: The infrared distance measuring device (5) comprises a slide rail (51) and two sets of infrared distance measuring components (52) arranged on the slide rail (51); wherein The infrared distance measuring assembly (52) comprises an electric push rod (521), an infrared distance meter (522) and a display light group (523), wherein the electric push rod (521) is suitable for pushing the infrared distance meter (522) to move on the slide rail (51), and the display light group (523) is electrically connected to the infrared distance meter (522).

9. The method for using the portable locking and positioning device for civil air defense doors according to claim 8, characterized in that: S1. Normal locking: The connecting rod assembly and the handle linkage are in a generally static state under the influence of gravity. Each lock head is subjected to the downward pull of the connecting rod assembly. Due to the length of the connection, it is restricted to an extreme position. At this time, each lock head can just lock into the lock slot set on one side of the door frame. The civil air defense door is locked normally. S2, manual unlocking: The inner or outer handle of the driving handle linkage device moves, driving the connecting rod assembly to move upward. At this time, the lock head rotates, and each lock head deviates from the lock slot, and the civil air defense door opens; S3. Positioning: During manual unlocking, the locking positioning assembly provided on the connecting rod assembly and the handle linkage device starts to operate, and the upper and lower spring leaves therein approach each other. When the handle linkage device is lifted to a certain position, the head of the upper spring leaf is locked to the waist of the lower spring leaf, and the connecting rod assembly and the handle linkage device are fixed, thus achieving the positioning effect; S4. Manual locking: Apply force to the locking positioning assembly through the handle linkage device to separate the upper spring leaf and the lower spring leaf, reset the connecting rod assembly and the handle linkage device, and lock the civil air defense door.

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