Fire alarm

Abstract

The fire alarm comprises a fire alarm main body and a mounting plate, the outer side of the top of the fire alarm main body is provided with a fixing groove, the center of the bottom of the mounting plate is provided with a fixing block, the fixing block is connected to the interior of the fixing groove in a threaded mode, and the bottom of the surface of the fire alarm main body is provided with an extension plate. A telescopic rod is arranged at the top of the extension plate, a fixing plate is arranged at the top of the telescopic rod, the inner surface of the fixing plate makes contact with the outer surface of the fire alarm body, a fixing groove is formed in the top of the fire alarm on the basis of an existing fire alarm, the fixing groove is connected to the fixing plate in a threaded mode, and the fixing plate is located on the mounting plate. And the mounting plate is fixedly connected to the ceiling through the fixing bolts, so that when the fire alarm main body needs to be taken down for maintenance or replacement, the fire alarm main body can be taken down only by rotating the fire alarm main body.

Description

Technical Field

[0001] The utility model relates to the technical field of alarms, in particular to a fire alarm. Background Art

[0002] Fire alarm is one of the most important means of preventing fire. Its function is to detect fires caused by large amounts of smoke. With the increase in fire and electricity consumption in modern households, the frequency of household fires is getting higher and higher. Once a household fire occurs, it is easy for unfavorable factors such as untimely firefighting, lack of fire-fighting equipment, and panic of people on the scene and slow escape to occur, which ultimately leads to major loss of life and property. Exploring the characteristics of household fires and fire prevention measures has practical significance for preventing household fires and reducing fire losses.

[0003] However, the fire alarm of the prior art is generally installed on the ceiling by bolts when in use. When the fire alarm needs to be repaired or replaced, the bolts need to be unscrewed again, which may damage the main structure of the ceiling, resulting in the ceiling being not beautiful. Utility Model Content

[0004] The purpose of the utility model is to provide a fire alarm to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a fire alarm, comprising a fire alarm body and a mounting plate, wherein threaded holes are provided through the four corners of the top and bottom of the mounting plate, and fixing bolts are provided inside the threaded holes, wherein the bottom end of the fixing bolt is located at the mounting plate, and the other end of the fixing bolt is located inside the ceiling;

[0006] A fixing block is arranged at the bottom center of the mounting plate, a fixing groove is arranged on the outer side of the top of the fire alarm body, an outer surface of the fixing block is arranged with an external thread, an inner surface of the fixing groove is arranged with an internal thread, the fixing block is connected to the inside of the fixing groove by means of threads, an extension plate is arranged at the bottom of the surface of the fire alarm body, a telescopic rod is arranged at the top of the extension plate, a fixing plate is arranged at the top of the telescopic rod, and the inner surface of the fixing plate is in contact with the outer surface of the fire alarm body.

[0007] Preferably, a clamping block is provided on the top of the fixing plate, and a clamping slot is provided on the bottom of the mounting plate and outside the fixing block, and the clamping block and the clamping slot are connected in a clamping manner.

[0008] Preferably, there are six telescopic rods, and when the telescopic rods have a maximum length, the top of the fixing plate connected to the telescopic rods is located on the bottom surface of the mounting plate.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model provides a fire alarm, based on the existing fire alarm, in which a fixing groove is arranged on the top of the fire alarm, the fixing groove is connected to a fixing plate by means of a thread, the fixing plate is located at a mounting plate, and the mounting plate is fixedly connected to a ceiling by fixing bolts. When the fire alarm body needs to be removed for repair or replacement, there is no need to remove the fixing bolts as in the fire alarm of the prior art, and the fire alarm body can be removed by simply rotating the fire alarm body. Compared with the prior art, the ceiling will not be damaged when the fire alarm body is removed, and there are certain usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the fire alarm body, the mounting plate and the ceiling mounting structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the mounting plate structure of the utility model;

[0013] Figure 3 This is a schematic diagram of the main structure of the fire alarm of the utility model.

[0014] In the figure: 1. Ceiling; 2. Mounting plate; 3. Fixing bolt; 4. Fire alarm body; 5. Telescopic rod; 6. Fixing plate; 7. Extension plate; 8. Threaded hole; 9. Fixing block; 10. Slot; 11. Fixing slot; 12. Block. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0017] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] See also Figure 1-3 The utility model provides a technical solution: a fire alarm, comprising a fire alarm body 4, a mounting plate 2, threaded holes 8 are provided through the four corners of the top and bottom of the mounting plate 2, a fixing bolt 3 is provided inside the threaded hole 8, the bottom end of the fixing bolt 3 is located at the mounting plate 2, and the other end of the fixing bolt 3 is located inside the ceiling 1;

[0019] A fixing block 9 is provided at the bottom center of the mounting plate 2, a fixing groove 11 is provided on the top outer side of the fire alarm body 4, an outer surface of the fixing block 9 is provided with an external thread, an inner surface of the fixing groove 11 is provided with an internal thread, the fixing block 9 is connected to the inside of the fixing groove 11 by means of threads, an extension plate 7 is provided at the bottom of the surface of the fire alarm body 4, a telescopic rod 5 is provided at the top of the extension plate 7, a fixing plate 6 is provided at the top of the telescopic rod 5, and the inner surface of the fixing plate 6 is in contact with the outer surface of the fire alarm body 4.

[0020] Furthermore, a clamping block 12 is provided on the top of the fixing plate 6 , and a clamping slot 10 is provided on the bottom of the mounting plate 2 and outside the fixing block 6 , and a clamping connection is formed between the clamping block 12 and the clamping slot 10 .

[0021] It should be noted that the top cross-section of the block 12 is annular. Considering that when the fire alarm body 4 is rotated, the final stop position of the fire alarm body 4 is not necessarily the same, the block 12 is designed to be annular, and the bottom shape of the slot 10 is also annular.

[0022] Furthermore, there are six telescopic rods 5 , and when the maximum length of the telescopic rods 5 is reached, the top of the fixing plate 6 connected to the telescopic rods 5 is located on the bottom surface of the mounting plate 2 .

[0023] Working principle: When installing the fire alarm of the utility model, the staff first places the mounting plate 2 on the ceiling 1, and then inserts the fixing bolts 3 into the threaded holes 8, so that the mounting plate 2 can be fixed to the ceiling 1. After the fixing is completed, except that they do not need to be used again, these fixing bolts 3 will not be removed again, so as to prevent certain damage to the ceiling 1 during the removal of the fixing bolts 3.

[0024] After the installation of the mounting plate 2 is completed, the fire alarm body 4 needs to be installed. When installing the fire alarm body 4, it is only necessary to insert the inside of the fixing groove 11 into the fixing block 9 at the bottom center of the mounting plate 2, and then rotate the fire alarm body 4. When it cannot be rotated anymore, the fire alarm body 4 is installed to the mounting plate 2.

[0025] After the fire alarm body 4 is installed, in order to make the installation of the fire alarm body 4 more stable, the staff can move the fixing plate 6 upward. During the upward movement of the fixing plate 6, the telescopic rod 5 will be extended. When the telescopic rod 5 is extended to the maximum length, the top of the fixing plate 6 will be located on the bottom surface of the mounting plate 2. At this time, the block 12 on the top of the fixing plate 6 will be snap-fitted to the bottom slot 10 of the mounting plate 2, thereby achieving a more stable fixation of the fire alarm body 4.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire alarm, comprising a fire alarm body (4) and a mounting plate (2), characterized in that: The four top corners of the top and bottom of the mounting plate (2) are provided with threaded holes (8), and fixing bolts (3) are provided inside the threaded holes (8). The bottom end of the fixing bolt (3) is located on the mounting plate (2), and the other end of the fixing bolt (3) is located inside the ceiling (1); A fixing block (9) is arranged at the bottom center of the mounting plate (2); a fixing groove (11) is arranged on the outer side of the top of the fire alarm body (4); an outer surface of the fixing block (9) is provided with an external thread; an inner surface of the fixing groove (11) is provided with an internal thread; the fixing block (9) is connected to the inside of the fixing groove (11) by means of a thread; an extension plate (7) is arranged at the bottom of the surface of the fire alarm body (4); a telescopic rod (5) is arranged at the top of the extension plate (7); a fixing plate (6) is arranged at the top of the telescopic rod (5); the inner surface of the fixing plate (6) is in contact with the outer surface of the fire alarm body (4).

2. A fire alarm according to claim 1, characterized in that: A clamping block (12) is arranged at the top of the fixing plate (6), and a clamping slot (10) is arranged at the bottom of the mounting plate (2) and outside the fixing block (9), and a clamping connection is formed between the clamping block (12) and the clamping slot (10).

3. A fire alarm according to claim 1, characterized in that: There are six telescopic rods (5), and when the telescopic rods (5) are at their maximum length, the top of the fixing plate (6) connected to the telescopic rods (5) is located on the bottom surface of the mounting plate (2).

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