A smoke alarm dismounting mechanism

Abstract

The utility model relates to fire fighting equipment technical field discloses a kind of smoke alarm dismounting mechanism, including alarm and the dismounting mechanism of being arranged at the top of alarm and the adjusting mechanism of being arranged at the bottom of alarm, dismounting mechanism has fixed block being fixedly connected at the top of alarm, fixed block both sides are fixedly connected with the arc block of arc-shaped sliding slot, L-shaped hanging plate connected with fixed base is slidably connected in arc-shaped sliding slot, adjusting mechanism has recessed block being fixedly connected at the bottom of alarm, recessed block is inserted with adjusting rod, adjusting rod outer wall is equipped with hollow column, clamping rod is slidably connected in hollow column. The utility model is separated quickly by the rotation cooperation of dismounting mechanism, by telescopic adjustment and locking design of adjusting mechanism, it is realized that operating personnel can complete the dismounting operation of high alarm on ground without the help of ladder, effectively avoid the security risk of high-altitude climbing, improve maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fire protection equipment technology, and in particular to a smoke detector disassembly mechanism. Background Technology

[0002] Smoke detectors are important fire protection facilities used to detect smoke generated in the early stages of a fire and issue timely alarms. To ensure that smoke detectors can sensitively monitor the smoke conditions in indoor spaces and achieve the maximum monitoring coverage, smoke detectors are installed on the ceiling of indoor buildings.

[0003] Most existing smoke detectors are installed and fixed directly to the wall or ceiling by screws through the base, or by a simple snap-fit ​​structure that connects to the pre-installed base on the wall. When the smoke detector's battery runs out after a period of use and needs to be replaced, or when the smoke detector itself malfunctions and needs to be repaired or replaced, the smoke detector is often installed at a high position, making it impossible for workers to reach it directly from the ground. As a result, workers have to carry and climb ladders to approach the smoke detector for disassembly.

[0004] This dismantling method, which mainly relies on manual climbing of ladders for high-altitude operations, not only requires workers to frequently carry heavy ladders between different installation points, resulting in high workload and low efficiency, but also poses a significant risk of falls when workers are standing on the ladders and working backwards, making it difficult to meet the requirements of modern fire protection facility maintenance for convenience and safety.

[0005] Therefore, this utility model proposes a smoke detector disassembly mechanism to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problem that in the existing technology, when disassembling and maintaining smoke detectors, workers must rely on ladders to climb at heights, which not only leads to low work efficiency but also poses a great safety hazard of falling from heights, this utility model aims to provide a smoke detector disassembly mechanism with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a smoke detector disassembly mechanism, including an alarm, a disassembly and assembly mechanism disposed on the top of the alarm, and an adjustment mechanism disposed on the bottom of the alarm.

[0008] The assembly and disassembly mechanism includes a fixed block fixedly connected to the top of the alarm. Arc-shaped blocks are fixedly connected to both sides of the outer wall of the fixed block. Arc-shaped grooves are formed on the inner wall of the arc-shaped blocks. An L-shaped hanging plate is slidably connected to the inner wall of the arc-shaped groove. A circular block is fixedly connected to the adjacent side of the outer wall of the L-shaped hanging plate. A fixed seat is fixedly connected to the top of the circular block. The adjustment mechanism includes a recessed block fixedly connected to the bottom of the alarm. Elastic convex plates are fixedly connected to both sides of the inner wall of the recessed block. An adjustment rod is inserted into the inner wall of the recessed block. Positioning grooves are equidistantly formed around the outer wall of the top of the adjustment rod, matching the elastic convex plates. A hollow column is slidably connected to the outer wall of the adjustment rod. A support plate is fixedly connected to the front side of the outer wall of the hollow column. A threaded rod is threadedly connected to the inner wall of the support plate. A locking rod is slidably connected to the front side of the inner wall of the hollow column. Locking slots are equidistantly formed around the outer wall of the locking rod, with one end of the threaded rod abutting within the locking slot.

[0009] Furthermore, the disassembly and assembly mechanism is located at the top of the alarm to connect it to the building, while the adjustment mechanism is located at the bottom of the alarm to provide a ground operation interface. The cross-sectional shape of the inner wall of the groove block and the cross-sectional shape of the adjustment rod are both non-circular structures. The groove block and the adjustment rod are circumferentially limited to ensure that the rotational torque can be effectively transmitted.

[0010] Preferably, the top surface of the fixing base has an installation hole, and the fixing base is fixedly connected to the roof of the building by means of expansion bolts passing through the installation hole, thereby ensuring the stability of the fixing base installed on the roof.

[0011] Preferably, the arc-shaped groove extends along the circumferential direction of the inner wall of the arc-shaped block, and one end of the arc-shaped groove extends to the end face of the arc-shaped block to form an opening for the L-shaped hanging plate to slide in or out. The arc of the arc-shaped groove is greater than or equal to 90 degrees, thereby limiting the stroke angle of the alarm's rotation and disassembly.

[0012] Preferably, the hollow column is sleeved on the outer periphery of the adjusting rod, and the side wall of the hollow column has a through hole for the locking rod to pass through. The locking rod extends into the hollow column through the through hole, and the side wall of the adjusting rod has a reserved hole adapted to the locking rod. The end of the locking rod near the adjusting rod is inserted into the reserved hole. This fit restricts the relative sliding between the adjusting rod and the hollow column.

[0013] Preferably, the support plate is vertically fixed to the outer wall of the hollow column, and the surface of the support plate is provided with a threaded hole that matches the threaded rod, so as to facilitate the screwing in and screwing out of the threaded rod.

[0014] Preferably, the slots are linearly arrayed along the axis of the locking rod, and the axis of the threaded rod is perpendicular to the axis of the locking rod, which allows the locking rod to be locked at different depths by the threaded rod.

[0015] Preferably, the elastic convex plate is constructed as an elastic metal or plastic sheet, and the shape of the positioning groove matches the shape of the elastic convex plate, so as to achieve elastic clamping and initial positioning of the adjusting rod by utilizing the deformation capability of the elastic convex plate.

[0016] This utility model has the following beneficial effects: 1. This utility model solves the problem in the prior art where workers need to climb ladders to perform maintenance on smoke detectors installed at high places, which poses a risk of falling from heights. By setting an adjustment mechanism consisting of an adjustment rod and a hollow column at the bottom of the alarm, this invention achieves the effect of remotely and conveniently installing and removing the alarm without leaving the ground by stretching or retracting the adjustment rod to adapt to different installation heights.

[0017] 2. This utility model solves the problem in the prior art that the connection between the smoke detector and the roof is made by bolt fastening, which makes the disassembly and assembly process cumbersome, time-consuming and requires professional tools. It achieves the effect of tool-free and efficient disassembly and assembly by simply rotating the alarm at a certain angle so that the L-shaped hanging plate can be disengaged from the arc groove.

[0018] 3. This utility model solves the problem in the prior art that long-distance operating rods are prone to sliding or loosening during disassembly operations when transmitting rotational torque, by setting a locking component between the adjusting rod and the hollow column and a pre-drilled hole for inserting a locking rod to engage with the threaded rod and abutting the slot. This achieves the effect of firmly locking the adjusting rod and the hollow column together, thereby ensuring that the rotational torque is accurately transmitted to the alarm and ensuring a smooth and reliable disassembly process. Attached Figure Description

[0019] Figure 1 This is a perspective view of a smoke detector disassembly mechanism proposed in this utility model; Figure 2 This is a front view of a smoke detector disassembly mechanism proposed in this utility model; Figure 3 This is a partial structural exploded view of a smoke detector disassembly mechanism proposed in this utility model; Figure 4 This is a partial structural diagram illustrating a smoke detector disassembly mechanism proposed in this utility model; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 for Figure 4 Enlarged view of section B in the middle.

[0020] Legend: 1. Alarm; 2. Assembly / disassembly mechanism; 201. Fixing block; 202. Circular block; 203. Fixing base; 204. L-shaped hanging plate; 205. Arc-shaped slide groove; 206. Arc-shaped block; 3. Adjustment mechanism; 301. Groove block; 302. Elastic convex plate; 303. Positioning groove; 304. Hollow column; 305. Adjusting rod; 306. Slot; 307. Threaded rod; 308. Support plate; 309. Locking rod. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0022] Example: Please refer to Figures 1 to 6 This utility model provides a smoke detector disassembly mechanism, which aims to solve the problems of low efficiency and safety hazards caused by the need for ladders to climb high and the cumbersome disassembly and assembly structure when installing or disassembling smoke detectors in the prior art.

[0023] Please refer to Figure 1 and Figure 2 The smoke detector disassembly mechanism includes an alarm 1, a disassembly and assembly mechanism 2 located on the top of the alarm 1, and an adjustment mechanism 3 located at the bottom of the alarm 1. The alarm 1 serves as the core functional component for smoke sensing. The disassembly and assembly mechanism 2 enables quick suspension connection and separation between the alarm 1 and the roof structure. The adjustment mechanism 3 is used to remotely control the rotation of the alarm 1 from the ground and supports the adjustment of the operating length.

[0024] Please refer to Figure 3 , Figure 4 and Figure 5 The disassembly and assembly mechanism 2 has a fixing block 201 fixedly connected to the top of the alarm 1. Arc-shaped blocks 206 are fixedly connected to both the left and right sides of the outer wall of the fixing block 201. Arc-shaped grooves 205 are opened on the inner wall of the arc-shaped grooves 205. L-shaped hanging plates 204 are slidably connected to the inner wall of the arc-shaped grooves 205. A circular block 202 is fixedly connected to the adjacent side of the outer wall of the two L-shaped hanging plates 204. A fixing seat 203 for fixing to the roof is fixedly connected to the top of the circular block 202. This matching structure ensures that the alarm 1 can be engaged or disengaged from the L-shaped hanging plates 204 by rotation.

[0025] Meanwhile, the adjustment mechanism 3 includes a groove block 301 fixedly connected to the bottom of the alarm 1. Elastic protrusions 302 are fixedly connected to both the left and right sides of the inner wall of the groove block 301. An adjustment rod 305 is inserted into the inner wall of the groove block 301. Positioning grooves 303 are equidistantly distributed around the outer wall of the top of the adjustment rod 305, and these grooves are adapted to the elastic protrusions 302. A hollow column 304 is slidably connected to the outer wall of the adjustment rod 305. A support plate 308 is fixedly connected to the front side of the outer wall of the hollow column 304. A threaded rod 307 is threadedly connected to the inner wall of the support plate 308. A locking rod 309 is slidably connected to the front side of the inner wall of the hollow column 304. Locking slots 306 are equidistantly distributed around the outer wall of the locking rod 309. One end of the threaded rod 307 abuts against the locking slot 306. This multi-locking structure ensures the length stability of the adjustment rod 305 after extension and retraction adjustment, as well as the reliability of torque transmission.

[0026] In a preferred embodiment, in order to securely install the alarm 1 on the roof, the top surface of the mounting base 203 is provided with mounting holes, and the mounting base 203 is fixedly connected to the roof of the building by means of expansion bolts passing through the mounting holes.

[0027] In a preferred embodiment, in order to limit the rotational stroke of the alarm 1, the arc-shaped slide 205 extends along the circumferential direction of the inner wall of the arc-shaped block 206, and one end of the arc-shaped slide 205 extends to the end face of the arc-shaped block 206 to form an opening for the L-shaped hanging plate 204 to slide in or out. The arc of the arc-shaped slide 205 is designed to be greater than or equal to 90 degrees.

[0028] As a preferred embodiment, in order to ensure the effective transmission of rotational torque and prevent slippage, the cross-sectional shape of the inner wall of the groove block 301 and the cross-sectional shape of the adjusting rod 305 are both non-circular structures. The groove block 301 and the adjusting rod 305 achieve circumferential limiting fit through the non-circular structure.

[0029] In a preferred embodiment, in order to achieve physical locking of the locking rod 309 to the adjusting rod 305, a hollow column 304 is sleeved on the outer periphery of the adjusting rod 305. The side wall of the hollow column 304 has a through hole for the locking rod 309 to pass through. The locking rod 309 extends into the hollow column 304 through the through hole. At the same time, the side wall of the adjusting rod 305 has a reserved hole that matches the locking rod 309. The end of the locking rod 309 near the adjusting rod 305 is inserted into the reserved hole.

[0030] In a preferred embodiment, in order to install and adjust the threaded rod 307, the support plate 308 is vertically fixed to the outer wall of the hollow column 304, and the surface of the support plate 308 is provided with a threaded hole that mates with the threaded rod 307.

[0031] In a preferred embodiment, to accommodate different locking depth requirements, the slots 306 are linearly arrayed along the axis of the locking rod 309, and the axis of the threaded rod 307 is perpendicular to the axis of the locking rod 309.

[0032] In a preferred embodiment, in order to provide a moderate elastic clamping force, the elastic protrusion 302 is constructed as an elastic metal sheet or plastic sheet, and the shape of the positioning groove 303 matches the shape of the elastic protrusion 302.

[0033] Working principle: When it is necessary to disassemble the alarm 1 at a high position, the operator stands on the ground holding the adjustment mechanism 3 and stretches or retracts the adjustment rod 305 according to the height of the alarm 1, which slides in the hollow column 304. During the process, the elastic protrusion 302 is inserted into the positioning groove 303 corresponding to the top of the adjustment rod 305 to achieve temporary positioning. Then, the locking rod 309 is inserted into the reserved hole corresponding to the adjustment rod 305 in the hollow column 304, and the threaded rod 307 on the support plate 308 is rotated and screwed into the locking groove 306 on the outer wall of the locking rod 309, thereby completely locking and fixing the adjustment rod 305 and the hollow column 304. Next, insert the top of the adjusting rod 305 into the groove 301 at the bottom of the alarm 1. Since the groove 301 and the adjusting rod 305 are non-circularly fitted, rotating the adjusting rod 305 causes the alarm 1 to rotate synchronously. The fixing block 201 at the top of the alarm 1 drives the arc block 206 to rotate, so that the arc groove 205 slides along the outer wall of the L-shaped hanging plate 204. When the rotation angle reaches 90 degrees, the L-shaped hanging plate 204 disengages from the opening at the end of the arc groove 205, realizing the separation of the alarm 1 from the fixing seat 203. The operator can then remove the alarm 1.

Claims

1. A smoke detector disassembly mechanism, comprising an alarm (1), a disassembly mechanism (2) disposed on the top of the alarm (1), and an adjustment mechanism (3) disposed on the bottom of the alarm (1). Its features are: The disassembly and assembly mechanism (2) includes a fixed block (201) fixedly connected to the top of the alarm (1). Arc-shaped blocks (206) are fixedly connected to both the left and right sides of the outer wall of the fixed block (201). Arc-shaped grooves (205) are opened on the inner wall of the arc-shaped blocks (206). L-shaped hanging plates (204) are slidably connected to the inner wall of the arc-shaped grooves (205). Circular blocks (202) are fixedly connected to adjacent sides of the outer walls of the two L-shaped hanging plates (204). A fixed seat (203) is fixedly connected to the top of the circular block (202).

2. The smoke detector disassembly mechanism according to claim 1, characterized in that, The adjustment mechanism (3) includes a groove block (301) fixedly connected to the bottom of the alarm (1). Elastic protrusions (302) are fixedly connected to both sides of the inner wall of the groove block (301). An adjustment rod (305) is inserted into the inner wall of the groove block (301). A positioning groove (303) is provided at equal intervals around the outer wall of the top of the adjustment rod (305). The positioning groove (303) is adapted to the elastic protrusion (302). A hollow column (304) is slidably connected to the outer wall of the adjustment rod (305). A support plate (308) is fixedly connected to the front side of the outer wall of the hollow column (304). A threaded rod (307) is threadedly connected to the inner wall of the support plate (308). A locking rod (309) is slidably connected to the front side of the inner wall of the hollow column (304). A locking groove (306) is provided at equal intervals around the outer wall of the locking rod (309). One end of the threaded rod (307) abuts against the locking groove (306).

3. The smoke detector disassembly mechanism according to claim 1, characterized in that, The top surface of the fixing seat (203) is provided with an installation hole. The fixing seat (203) is fixedly connected to the roof of the building by an expansion bolt passing through the installation hole. The arc-shaped slide (205) extends along the circumferential direction of the inner wall of the arc-shaped block (206). One end of the arc-shaped slide (205) extends to the end face of the arc-shaped block (206) to form an opening for the L-shaped hanging plate (204) to slide in or out. The arc of the arc-shaped slide (205) is greater than or equal to 90 degrees.

4. The smoke detector disassembly mechanism according to claim 2, characterized in that, The cross-sectional shape of the inner wall of the groove block (301) and the cross-sectional shape of the adjusting rod (305) are both non-circular structures, and the groove block (301) and the adjusting rod (305) are circumferentially limited.

5. A smoke detector disassembly mechanism according to claim 2, characterized in that, The hollow column (304) is sleeved on the outer periphery of the adjusting rod (305). The side wall of the hollow column (304) has a through hole for the clamping rod (309) to pass through. The clamping rod (309) extends into the hollow column (304) through the through hole.

6. The smoke detector disassembly mechanism according to claim 5, characterized in that, The adjusting rod (305) has a reserved hole on its side wall that is compatible with the locking rod (309), and one end of the locking rod (309) near the adjusting rod (305) is inserted into the reserved hole.

7. A smoke detector disassembly mechanism according to claim 2, characterized in that, The support plate (308) is vertically fixed to the outer wall of the hollow column (304), and the surface of the support plate (308) is provided with a threaded hole that cooperates with the threaded rod (307).

8. A smoke detector disassembly mechanism according to claim 2, characterized in that, The slots (306) are linearly arrayed along the axis of the lever (309), and the axis of the threaded rod (307) is perpendicular to the axis of the lever (309).

9. A smoke detector disassembly mechanism according to claim 2, characterized in that, The elastic protrusion (302) is constructed as an elastic metal sheet or plastic sheet, and the shape of the positioning groove (303) matches the shape of the elastic protrusion (302).

Images