Mounting structure for quickly opening and closing civil air defense door

The automatic opening and closing of the air defense door is achieved by driving a motor and a lead screw mechanism. Combined with infrared monitoring and buffer design, the problems of long closing time and insufficient protection of the air defense door are solved, and fast and safe door lock operation is realized.

CN223794086UActive Publication Date: 2026-01-13CHINA HYDROPOWER ELEVENTH ENG BUREAU (ZHENGZHOU) CO LTD +1
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202520377227.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-06
Publication Date
2026-01-13
Estimated Expiration
2035-03-06

AI Technical Summary

Technical Problem

Existing air-raid shelter doors require manual locking when closing, resulting in excessively long closing times, a risk of pinching injuries, and easy damage to the locks after impact, leading to a decrease in protective effectiveness.

Method used

The door is opened and closed by a drive motor and a lead screw mechanism. It is combined with an infrared transmitter to monitor objects in the passageway and achieve automatic locking. The support spring provides a buffer, reducing manual operation time and preventing the risk of pinching.

Benefits of technology

It improves the closing efficiency of the air-raid shelter door, reduces the risk of pinching injuries, enhances the impact buffering effect, and ensures that the door lock is not easily damaged after an impact.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223794086U_ABST
    Figure CN223794086U_ABST
Patent Text Reader

Abstract

The utility model discloses a mounting structure for quick opening and closing of a civil defense door, which comprises a wall body, an aisle is arranged on the wall body, a placement groove communicated with the aisle is arranged in the wall body, an accommodating groove is arranged in the wall body, the accommodating groove is communicated with the aisle through a guide channel, and guide rails are fixedly mounted at the bottoms of the aisle and the placement groove. A civil air defense door matched with the aisle is arranged in the placement groove, a fixing frame is fixedly assembled on the side edge of the civil air defense door, rolling wheels matched with the guide rails are fixedly arranged at the bottom of the fixing frame and the bottom of the civil air defense door, a driving mechanism is arranged in the containing groove, and a protection structure matched with the fixing frame is fixedly assembled on the inner side wall of the aisle. And an infrared emission device is fixedly assembled on the side wall of the fixed frame. Through the driving mechanism, the operation time in the door locking control process through components such as a hand wheel in the prior art can be shortened, the closing and locking time of the civil air defense door is shortened, and the closing efficiency of the civil air defense door is improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model belongs to the field of civil defense door installation technology, specifically relating to an installation structure for rapid opening and closing of civil defense doors. Background Technology

[0002] Civil defense doors are the doors at the entrances and exits of civil defense projects. Civil defense doors are classified in a relatively clear manner, including ordinary single and double-leaf protective airtight doors and airtight doors, as well as single and double-leaf protective airtight doors and airtight doors with movable thresholds, and other types of civil defense equipment.

[0003] Currently, when closing air-raid shelter doors, a handwheel or other control components are required to operate the locking mechanism inside the door to lock the door. However, during the process of using the handwheel or other components to operate the locking mechanism, the door takes too long to close, which may cause injury to pedestrians. Existing air-raid shelter doors are not sufficiently protective, and the locks are easily damaged after impact. This leads to the problem that the air-raid shelter door can be easily opened from the outside after it is closed due to the damaged lock, thus reducing the actual protective effect of the air-raid shelter door. To address this, we propose an installation structure for the rapid opening and closing of air-raid shelter doors. Utility Model Content

[0004] The purpose of this invention is to provide an installation structure for the rapid opening and closing of air-raid shelter doors in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] An installation structure for the rapid opening and closing of a civil defense door includes a wall with a passageway. A mounting groove communicating with the passageway is formed within the wall. A receiving groove is also formed within the wall, and the receiving groove is connected to the passageway via a guide channel. Guide rails are fixedly installed at the bottom of both the passageway and the mounting groove. A civil defense door adapted to the passageway is installed within the mounting groove, and a fixing frame is fixedly mounted on the side of the civil defense door. Rollers adapted to the guide rails are fixedly installed at the bottom of both the fixing frame and the bottom of the civil defense door. A driving mechanism is provided within the receiving groove. A protective structure adapted to the fixing frame is fixedly mounted on the inner side wall of the passageway, and an infrared emitting device is fixedly mounted on the side wall of the fixing frame.

[0007] Preferably, the driving mechanism includes a drive motor and a lead screw. The drive motor is fixedly mounted on the side wall of the receiving groove. A reducer is fixedly mounted on the output end of the drive motor. A lead screw is fixedly mounted on the output end of the reducer. The end of the lead screw is movably mounted on the side wall of the receiving groove via a bearing. A slide is connected to the lead screw. The bottom end of the slide extends out of a guide channel and is fixedly mounted on the top of the fixed frame.

[0008] In the aforementioned structure, the air-raid shelter door and the fixed frame can slide on the guide rail via rollers at the bottom, facilitating the opening and closing of the air-raid shelter door. When the drive motor is working, it drives the lead screw to rotate through the reducer, and then the screw connection between the lead screw and the slide block moves the slide block along the length of the lead screw, which in turn moves the fixed frame within the mounting slot to complete the sealing of the passageway. This reduces the operation time when using handwheels or other components to operate the door and locks the air-raid shelter door, thus reducing the closing and locking time and improving the closing efficiency of the air-raid shelter door. At the same time, the infrared transmitter can constantly monitor whether there are any objects passing through the passageway. The infrared receiver can constantly monitor and receive signals, which can control the drive motor to stop working and complete the self-locking. In addition, the screw connection between the lead screw and the slide block prevents the air-raid shelter door from moving automatically, improving the anti-pinch effect. When the fixed frame drives the air-raid shelter door to close, the guide wheel can contact the protective structure first, and the compression of the support spring provides a buffering effect against the impact, improving the impact buffering effect on the air-raid shelter door.

[0009] Preferably, the top and bottom of the left side wall of the fixed frame are provided with guide grooves, an outer cylinder is fixed on the side wall away from the opening in the guide groove, a support spring is fixedly connected to the outer side wall of the outer cylinder, and a guide wheel is fixedly assembled after the other end of the support spring extends out of the guide groove.

[0010] Preferably, the top and bottom of the right side wall of the protective structure are provided with slots, and the slots correspond to the guide wheels. A protective groove is provided in the middle of the right side wall of the protective structure, and an infrared receiver adapted to the infrared emitting device is fixedly installed on the inner side wall of the protective groove.

[0011] Preferably, the infrared emitting device includes a protective glass frame fixed to the left side wall of the fixed frame, and an infrared emitting sensor adapted to the infrared receiver is fixedly installed inside the protective glass frame.

[0012] Preferably, the size of the slide is adapted to the size of the receiving groove.

[0013] Preferably, the length of the guide channel is the same as the length of the passageway, and the size of the slide is adapted to the guide channel.

[0014] Preferably, a cleaning brush is fixed to the bottom of the fixed frame, and the cleaning brush corresponds to the roller.

[0015] The beneficial effects are as follows: This application reduces the operation time of locking the door by using a drive mechanism, which is a common practice in the prior art. This reduces the time for the air defense door to close and lock, thus improving the closing efficiency of the air defense door. At the same time, the infrared transmitter can monitor whether there are any objects passing through the passageway. The infrared receiver can monitor and receive signals at all times, which can control the drive motor to stop working and complete the self-locking. In addition, the screw connection between the lead screw and the slide block will prevent the air defense door from moving automatically, thus improving the anti-pinch effect. When the fixed frame drives the air defense door to close, the guide wheel can contact the protective structure first, and the compression of the support spring provides a buffering effect against the impact, thus improving the impact buffering effect on the air defense door. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the fixed frame structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the protective structure of this utility model.

[0021] The annotations in the attached figures are explained as follows:

[0022] 1. Wall; 2. Passageway; 3. Installation groove; 4. Receiving groove; 5. Air defense door; 6. Fixing frame; 61. Guide groove; 62. Outer cylinder; 63. Support spring; 64. Guide wheel; 7. Roller; 8. Guide rail; 9. Drive motor; 10. Reducer; 11. Lead screw; 12. Slide; 13. Guide channel; 14. Protective structure; 141. Slot; 142. Protective groove; 143. Infrared receiver; 15. Infrared transmitter. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] See Figures 1-4 As shown, this utility model provides an installation structure for the rapid opening and closing of a civil defense door, including a wall 1, a passageway 2 on the wall 1, a placement groove 3 communicating with the passageway 2 within the wall 1, and a receiving groove 4 within the wall 1, with the receiving groove 4 connected to the passageway 2 via a guide channel 13. Guide rails 8 are fixedly installed at the bottom of both the passageway 2 and the placement groove 3. A civil defense door 5 adapted to the passageway 2 is installed in the placement groove 3, and a fixing frame 6 is fixedly mounted on the side of the civil defense door 5. Rollers 7 adapted to the guide rails 8 are fixedly installed at the bottom of both the fixing frame 6 and the bottom of the civil defense door 5. A driving mechanism is installed in the receiving groove 4, which can drive the civil defense door 5 to move along the guide rails 8, achieving automation. A protective structure 14 adapted to the fixing frame 6 is fixedly installed on the inner side wall of the passageway 2, and an infrared emitting device 15 is fixedly installed on the side wall of the fixing frame 6. The protective structure 14 provides a buffer for the protective door.

[0025] For details, please refer to Figure 2 As shown, the driving mechanism includes a drive motor 9 and a lead screw 11. The drive motor 9 is fixedly installed on the side wall of the receiving groove 4. A reducer 10 is fixedly mounted on the output end of the drive motor 9. A lead screw 11 is fixedly mounted on the output end of the reducer 10. The end of the lead screw 11 is movably mounted on the side wall of the receiving groove 4 through a bearing. A slide 12 is connected to the lead screw 11. The bottom end of the slide 12 extends out of a guide channel 13 and is fixedly mounted on the top of the fixed frame 6.

[0026] In the above structure, the air-raid shelter door 5 and the fixed frame 6 can slide on the guide rail 8 via the bottom rollers 7, facilitating the opening and closing of the air-raid shelter door 5. When the drive motor 9 is working, it drives the lead screw 11 to rotate via the reducer 10. Then, through the screw connection between the lead screw 11 and the slide block 12, the slide block 12 moves along the length of the lead screw 11, which in turn moves the fixed frame 6 within the mounting groove 3, completing the sealing of the passageway 2. This reduces the operation time when using handwheels or other components to lock the door, reduces the time required for the air-raid shelter door 5 to close and lock, and improves the closing efficiency of the air-raid shelter door 5. During this process, the infrared transmitter 15 can constantly monitor whether any object passes through the passageway 2. The infrared receiver 143 can constantly monitor and receive signals, which can control the drive motor 9 to stop working and complete the self-locking. At the same time, due to the screw connection between the lead screw 11 and the slide block 12, the air defense door 5 will not move automatically, improving the anti-pinch effect. When the fixed frame 6 drives the air defense door 5 to close, the guide wheel 64 can first contact the protective structure 14, and the compression of the support spring 63 provides a buffering effect against the impact, improving the impact buffering effect on the air defense door 5.

[0027] As a preferred embodiment in this case, refer to Figure 2 As shown in the figure, the orientations indicated in this application, such as left and right, are based on the orientations shown in the figure. The top and bottom of the left side wall of the fixed frame 6 are provided with guide grooves 61. An outer cylinder 62 is fixed to the side wall of the guide groove 61 away from the opening. A support spring 63 is fixedly connected to the outer side wall of the outer cylinder 62. The other end of the support spring 63 extends out of the guide groove 61 and is fixedly fitted with a guide wheel 64. Furthermore, the top and bottom of the right side wall of the protective structure 14 are provided with slots 141, and the slots 141 correspond to the guide wheel 64. A protective groove 142 is provided in the middle of the right side wall of the protective structure 14. An infrared receiver 143 adapted to the infrared transmitter 15 is fixedly fitted to the inner side wall of the protective groove 142. The support spring 63, guide wheel 64, infrared transmitter 15, and infrared receiver 143 work together to provide protection for the air-raid shelter 5.

[0028] Furthermore, the infrared emitting device 15 includes a protective glass frame fixed to the left side wall of the fixed frame 6, and an infrared emitting sensor adapted to the infrared receiver 143 is fixedly installed inside the protective glass frame. The size of the slide 12 is adapted to the size of the receiving groove 4. The length of the guide channel 13 is the same as the length of the passage 2, and the size of the slide 12 is adapted to the guide channel 13.

[0029] As an optional implementation of this case, a cleaning brush is fixed to the bottom of the fixed frame 6, and the cleaning brush corresponds to the roller 7 and can clean the roller 7.

[0030] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An installation structure for rapid opening and closing of a civil defense door, comprising a wall, wherein a passageway is provided on the wall, and a mounting groove communicating with the passageway is provided within the wall, characterized in that: The wall has a receiving groove, which is connected to the passageway via a guide channel. Guide rails are fixedly installed at the bottom of both the passageway and the receiving groove. A civil defense door adapted to the passageway is installed in the receiving groove. A fixed frame is fixedly installed on the side of the civil defense door. Rollers adapted to the guide rails are fixedly installed at the bottom of the fixed frame and the bottom of the civil defense door. A driving mechanism is installed in the receiving groove. A protective structure adapted to the fixed frame is fixedly installed on the inner side wall of the passageway. An infrared emitting device is fixedly installed on the side wall of the fixed frame.

2. The installation structure for rapid opening and closing of a civil defense door according to claim 1, characterized in that: The drive mechanism includes a drive motor and a lead screw. The drive motor is fixedly installed on the side wall of the receiving groove. A reducer is fixedly mounted on the output end of the drive motor. A lead screw is fixedly mounted on the output end of the reducer. The end of the lead screw is movably mounted on the side wall of the receiving groove through a bearing. A slide is connected to the lead screw. The bottom end of the slide extends out of a guide channel and is fixedly mounted on the top of the fixed frame.

3. The installation structure for rapid opening and closing of a civil defense door according to claim 1, characterized in that: The top and bottom of the left side wall of the fixed frame are provided with guide grooves. An outer cylinder is fixed on the side wall away from the opening in the guide groove. A support spring is fixedly connected to the outer side wall of the outer cylinder. The other end of the support spring extends out of the guide groove and is fixedly fitted with a guide wheel.

4. The installation structure for rapid opening and closing of a civil defense door according to claim 3, characterized in that: The top and bottom of the right side wall of the protective structure are provided with slots, and the slots correspond to the guide wheels. A protective groove is provided in the middle of the right side wall of the protective structure, and an infrared receiver compatible with the infrared emitting device is fixedly installed on the inner side wall of the protective groove.

5. The installation structure for rapid opening and closing of a civil defense door according to claim 4, characterized in that: The infrared emitting device includes a protective glass frame fixed to the left side wall of the fixed frame, and an infrared emitting sensor adapted to the infrared receiver is fixedly installed inside the protective glass frame.

6. The installation structure for rapid opening and closing of a civil defense door according to claim 2, characterized in that: The dimensions of the slide block are adapted to the dimensions of the receiving groove.

7. The installation structure for rapid opening and closing of a civil defense door according to claim 2, characterized in that: The length of the guide channel is the same as the length of the passageway, and the size of the slide is adapted to the guide channel.

8. The installation structure for rapid opening and closing of a civil defense door according to claim 1, characterized in that: A cleaning brush is fixed to the bottom of the fixed frame, and the cleaning brush corresponds to the roller.