Fire isolation timing device with novel timing function

Abstract

The utility model relates to the technical field of fire alarm systems, in particular to a fire isolating and timing device with a novel timing function, which comprises a main body, a control circuit board arranged in the main body, a control knob arranged on the front side of the main body, a cover plate arranged at the front end of the control knob and capable of being opened and closed for control, and a mounting frame arranged on the back side of the main body and connected with a ship wall. A plurality of mounting holes are formed in the mounting frame, bolts are arranged in the mounting holes in a penetrating mode, buffer structures are arranged on the bolts, each buffer structure comprises a spring elastically connected between the mounting frame and the ship wall in an abutting mode, and a plurality of hollow structures are further evenly arranged on the mounting frame. The problem that an existing timing isolation device is not provided with a damping structure and cannot be normally installed and used in a ship application scene is solved.

Description

Technical Field

[0001] This utility model relates to the field of fire alarm system technology, and in particular to a fire isolation timing device with a novel timing function. Background Art

[0002] Ship fires are among the most common and dangerous maritime safety accidents, characterized by complex environments, diverse combustible materials, and high difficulty in firefighting. The confined space and densely packed equipment inside ships, coupled with the marine environment and climatic changes, affect the speed and direction of fire spread. Furthermore, the presence of various liquid, gaseous, and solid combustible materials inside ships poses a threat to personnel due to the smoke and toxic gases produced. Given the limited space, firefighting equipment, and personnel on board, fire suppression is extremely challenging. Therefore, automatic isolation technology in ship fire alarm systems is of paramount importance.

[0003] Patent CN204463344U discloses a fire detector isolation timer, including a microcontroller chip. The microcontroller chip is connected to an audible and visual alarm circuit, a timing circuit, a crystal oscillator circuit, a reset circuit, and a fire detection circuit. The fire detection circuit is connected to a power conversion circuit via terminals. The advantages of this invention are: the fire detector isolation timer allows for isolation of fire detectors before construction; detectors in isolation will not perform fire detection or prediction. When the timer expires or is manually turned off, the fire detector will restart. This device is simple to install and debug, and easy to operate, eliminating the need for isolation or contact isolation operations on the controller host.

[0004] While the technical solutions described in the aforementioned patents can provide timed isolation control for fire detectors, they are designed for applications in conventional buildings, where the controller is mounted on a stable wall structure. However, in the context of ship structures and real-world scenarios, the inevitable undulations and swaying during navigation render conventional controller mounting structures ineffectively protected. Furthermore, the internal electronic connections lack suitable shock-absorbing mechanisms, resulting in a high failure rate. Therefore, providing a timed isolation device suitable for use in marine environments has become a pressing issue for industry professionals. Utility Model Content

[0005] This utility model provides a fire isolation timing device with a novel timing function, which helps to solve the problem that existing timing isolation devices are not equipped with shock-absorbing structures and cannot be adapted to normal installation and use in ship application scenarios.

[0006] The utility model is achieved in this way:

[0007] A novel fire isolation timing device with a timing function includes a main body, a control circuit board inside the main body, a control knob on the front of the main body, a cover plate that can be opened and closed at the front end of the control knob, a mounting bracket on the back of the main body that connects to the wall of a ship, a mounting bracket with several mounting holes, bolts passing through the mounting holes, and a buffer structure on the bolts. The buffer structure includes a spring that elastically abuts against the mounting bracket and the wall of the ship. The mounting bracket also has several perforated structures evenly arranged on it.

[0008] Based on the above technical solution, the main body is a box structure, and the main body is provided with an upper shell and a lower shell that are spliced ​​together at the front and back.

[0009] Based on the above technical solution, a flip hinge structure is provided between the cover plate and the main body.

[0010] Based on the above technical solution, a cable connector is provided at the bottom of the main body.

[0011] Based on the above technical solution, the mounting bracket is a sheet metal part, and the upper and lower ends of the mounting bracket are provided with side plates that fold forward. The side plates are inserted into the back of the main body and fixed by fasteners.

[0012] Based on the above technical solution, the mounting hole is a countersunk hole structure, and the nut of the bolt is located inside the mounting hole after installation.

[0013] Based on the above technical solution, a washer is provided between the nut of the bolt and the countersunk groove of the mounting groove.

[0014] Based on the above technical solution, the washer is made of elastic material, and the side wall of the washer is provided with several grooves that penetrate the washer radially.

[0015] Based on the above technical solution, the washer has a frustum-shaped cylindrical structure.

[0016] Compared with the prior art, the present invention has at least the following advantages:

[0017] This utility model features a mounting bracket on the back of the main body, which serves as a connection structure for installation. A buffer structure provides a shock-absorbing barrier between the main body and the ship's wall after installation. In practical applications, the undulations and swaying of the ship during navigation are reduced by the buffer structure, thereby decreasing the swaying of the main body and providing suitable shock absorption. This meets the normal installation and usage requirements of ship applications, thus fulfilling the fixed installation requirements of the timed isolation device on the ship, resulting in a structure with better stability and ease of use. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a fire isolation timing device with a novel timing function in one embodiment;

[0020] Figure 2 for Figure 1 The front view;

[0021] Figure 3 This is a schematic diagram of the mounting bracket in one embodiment;

[0022] Figure 4 for Figure 3 A schematic diagram of the mounting structure of the mounting bracket;

[0023] Figure 5 for Figure 4 Schematic diagram of the middle washer;

[0024] Figure 6 This is an application circuit diagram in one embodiment.

[0025] The diagram is labeled as follows: 1. Main body; 2. Control knob; 3. Cover plate; 4. Cable connector; 5. Mounting bracket; 51. Side plate; 52. Hollow structure; 53. Mounting hole; 54. Bolt; 55. Washer; 551. Slot; 56. Spring. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of 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, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0027] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] Combination Figure 1-5 This embodiment discloses a novel fire isolation timing device with a timing function, including a main body 1 that provides support. The main body 1 has a box structure and is provided with an upper shell and a lower shell that are spliced ​​together. The detachable splicing structure helps to reduce the manufacturing difficulty of the main body 1 and facilitates the assembly of the internal structure. A cable connector 4 is provided at the bottom of the main body 1.

[0031] The timing isolation device includes an input interface, an output interface, isolation control, timing control, and a terminating resistor matching unit 1, with a control circuit board inside. Combined with... Figure 6 As shown, under normal conditions, when the rotary control knob 2 (mechanical timer switch) is not closed, the gate of the PMOS transistor is pulled to GND through resistor R3 and conducts, which is equivalent to closing the switch and connecting the downstream fire detector, enabling it to work normally. When personnel are working, the rotary control knob 2 (mechanical timer switch) is rotated according to the required time, and the gate of the PMOS transistor is pulled to VCC through the timer switch and does not conduct, which is equivalent to disconnecting the downstream fire detector and making it not work. Since the fire detector circuit has an open circuit fault detection, a matching terminating resistor is required. Therefore, when the timer switch is closed, in addition to disconnecting the downstream fire detector, the matching R3 is also connected to the circuit to avoid the fire detector from malfunctioning due to isolation disconnection. In other embodiments, the control circuit board of the timer power supply device can also adopt related existing technologies such as CN204463344U. Those skilled in the art can select and implement from the existing technologies according to the actual operating conditions.

[0032] like Figure 1 and Figure 2As shown, the main body 1 has a control knob 2 on the front for easy operation. The front end of the control knob 2 is provided with a cover plate 3 that can be opened and closed. The cover plate 3 and the main body 1 are provided with a flip hinge structure, which is the prior art. Its specific structure and working principle will not be described in detail here. Those skilled in the art can select and implement it from the prior art according to the actual operation.

[0033] Furthermore, the back of the main body 1 is provided with a mounting bracket 5 that connects to the ship's wall.

[0034] Combination Figure 3 and Figure 4 The mounting bracket 5 is provided with several mounting holes 53. The mounting holes 53 are countersunk holes. Bolts 54 are inserted into the mounting holes 53. After the bolts 54 are installed, they are located inside the mounting holes 53. This prevents the bolts 54 from protruding after installation, thus making the connection between the mounting bracket 5 and the back of the main body 1 more tight and reliable.

[0035] Bolt 54 is equipped with a buffer structure, which includes a spring 56 that elastically abuts between the mounting bracket 5 and the ship's wall. The spring 56 is sleeved on the back of the mounting bracket 5. After installation, the two ends of the extension direction of the spring 56 abut against the ship's wall and the back of the mounting bracket 5, respectively. Its function is that when the bolt 54 is tightened, the spring 56 can continuously apply a certain degree of tension, so that the mounting bracket 5 will not easily loosen. In addition, when the ship rolls, the spring 56 can also provide a certain degree of cushioning and shock absorption, making the installation state of the mounting bracket 5 more stable and reliable. This connection structure also ensures that after the mounting bracket 5 is installed, its back is kept at a certain distance from the ship's wall. In other words, the main body 1 is designed to be suspended, which means that even if water droplets appear on the inner wall due to the temperature difference between the inside and outside of the cabin, it will not easily affect the electronic components inside the timing controller.

[0036] To make the mounting bracket 5 lighter, several hollow structures 52 are evenly arranged on the mounting bracket 5.

[0037] The mounting bracket 5 is a sheet metal part. The upper and lower ends of the mounting bracket 5 are provided with side plates 51 that fold forward. The side plates 51 are inserted into the back of the main body 1 and are fixed by fasteners. This makes the connection between the mounting bracket 5 and the main body 1 tighter and the synchronization during buffering and shock absorption better.

[0038] Furthermore, a washer 55 is provided between the nut of the bolt 54 and the countersunk groove of the mounting groove. (Combined) Figure 5As shown, the washer 55 is made of elastic material (rubber), and several slots 551 are provided on the side wall of the washer 55, with the slots 551 radially penetrating the washer 55. The design of the slots 551 makes the structure of the washer 55 more flexible and has smoother elastic characteristics. It should be noted that in this embodiment, the washer 55 has a frustoconical cylindrical structure. This structure increases the contact area between the washer 55 and the mounting bracket 5, which is conducive to full fit and facilitates force transmission during the cushioning process.

[0039] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A novel fire isolation timing device with a timing function, characterized in that, The main body (1) is provided with a control circuit board inside. The front of the main body (1) is provided with a control knob (2). The front end of the control knob (2) is provided with a cover plate (3) that can be opened and closed. The back of the main body (1) is provided with a mounting bracket (5) that is connected to the ship wall. The mounting bracket (5) is provided with several mounting holes (53). Bolts (54) are inserted into the mounting holes (53). The bolts (54) are provided with a buffer structure. The buffer structure includes a spring (56) that elastically abuts against the mounting bracket (5) and the ship wall. The mounting bracket (5) is also provided with several hollow structures (52) evenly.

2. A novel fire isolation timing device with timing function according to claim 1, characterized in that, The main body (1) is a box structure, and the main body (1) is provided with an upper shell and a lower shell that are spliced ​​together at the front and back.

3. A novel fire isolation timing device with timing function according to claim 2, characterized in that, The cover plate (3) and the main body (1) are provided with a flip hinge structure.

4. A novel fire isolation timing device with timing function according to claim 2, characterized in that, The bottom of the main body (1) is provided with a cable connector (4).

5. A novel fire isolation timing device with timing function according to claim 1, characterized in that, The mounting bracket (5) is a sheet metal part. The mounting bracket (5) has side plates (51) that fold forward at both ends. The side plates (51) are inserted into the back of the main body (1) and fixed by fasteners.

6. A novel fire isolation timing device with timing function according to claim 1, characterized in that, The mounting hole (53) is a countersunk hole structure, and the nut of the bolt (54) is located inside the mounting hole (53) after installation.

7. A novel fire isolation timing device with timing function according to claim 6, characterized in that, A washer (55) is provided between the nut of the bolt (54) and the countersunk groove of the mounting groove.

8. A novel fire isolation timing device with timing function according to claim 7, characterized in that, The washer (55) is made of elastic material, and the side wall of the washer (55) is provided with a plurality of slots (551), which radially penetrate the washer (55).

9. A novel fire isolation timing device with timing function according to claim 8, characterized in that, The washer (55) has a frustum cylindrical structure.

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