Building fire alarm device

Abstract

The utility model discloses a building fire alarm device, and relates to the technical field of fire alarm devices. The smoke sensor comprises a mounting disc and a smoke sensor body, one side of the mounting disc is rotatably matched with a plurality of gears, one end of each gear is provided with a threaded rod, one side of the mounting disc is rotatably matched with an inner gear ring, the inner gear ring is meshed with the plurality of gears, the inner diameter length of the inner gear ring is larger than the outer diameter length of the gears, and the plurality of threaded rods are in threaded fit with the smoke sensor body. A fireproof cushion pad is arranged on one side of the installation disc and located between the installation disc and the smoke sensor body. According to the utility model, the smoke sensor body is placed on the fireproof cushion, and then the inner gear ring is manually pushed to rotate to drive the plurality of gears to rotate, so that the plurality of threaded rods are conveniently driven to be screwed into the threaded holes at the same time, the plurality of threaded rods are driven to fasten the smoke sensor body at the same time, and the mounting and dismounting efficiency of the smoke sensor body is conveniently improved; and the disassembly and maintenance efficiency of the smoke sensor body is improved.

Description

Technical Field

[0001] The utility model belongs to the field of fire alarm devices, and in particular relates to a building fire alarm device. Background Art

[0002] The most common type of smoke alarm in fire alarm devices is the ion smoke alarm, which uses an ion smoke sensor inside. It is a technologically advanced, stable and reliable sensor that is widely used in various fire alarm systems and has far superior performance to gas-sensitive resistor fire alarms. The smoke inlet of most smoke alarms is a hollow structure, which facilitates better smoke sensing.

[0003] A Chinese patent with announcement number CN213123259U discloses a smoke alarm device for buildings that is easy to maintain, including a wall, a mounting plate, a smoke alarm body, a limit groove, a limit mechanism, a positioning block and a positioning groove. The left side of the wall is fixedly connected to the mounting plate, the smoke alarm body is movably connected to the midpoint of the left side of the mounting plate, the right sides of the top and bottom of the smoke alarm body are provided with limit grooves, the left side of the mounting plate is provided with a limit mechanism, the top and bottom of the right side of the smoke alarm body are fixedly connected to the positioning block, and a positioning groove is provided at the position corresponding to the positioning block on the left side of the mounting plate. The utility model achieves the effect of facilitating maintenance by the cooperation of the wall, the mounting plate, the smoke alarm body, the limit groove, the limit mechanism, the positioning block and the positioning groove. The smoke alarm body can be disassembled without consuming much time and energy of the staff for maintenance, which brings great convenience to the staff. However, the convenient-to-maintain building smoke alarm device in this application positions the smoke alarm body by two threaded rods, and the two threaded rods rotate independently, which has a slow efficiency in positioning the smoke alarm body, affecting the efficiency of disassembly, inspection and maintenance of the smoke alarm body.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a building fire alarm device.

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0007] A building fire alarm device comprises a mounting plate and a smoke sensor body. A plurality of gears are rotatably engaged on one side of the mounting plate. A threaded rod is provided at one end of the gear. An inner gear ring is rotatably engaged on one side of the mounting plate. The inner gear ring meshes with the plurality of gears. The inner diameter of the inner gear ring is greater than the outer diameter of the gear. The plurality of threaded rods are threadedly engaged with the smoke sensor body. A fireproof buffer pad is provided on one side of the mounting plate. The fireproof buffer pad is located between the mounting plate and the smoke sensor body.

[0008] Optionally, the fireproof buffer pad is located between multiple gears, and a notch corresponding to the gear is provided on the side of the fireproof buffer pad. The thickness of the fireproof buffer pad is greater than the thickness of the gear, which facilitates squeezing the fireproof buffer pad through the smoke sensor body.

[0009] Optionally, a plurality of anti-slip grooves are arranged in a circular array on the outer side of the inner gear ring, an annular groove is arranged on one side of the mounting plate, a first bearing is fixed in the annular groove, an annular protrusion is arranged at the bottom end of the inner gear ring, and the annular protrusion is fixed in the first bearing, so as to improve the rotation stability of the inner gear ring through the first bearing.

[0010] Optionally, multiple spring balls are embedded in the inner wall of the annular groove, and the multiple spring balls are arranged in a circular array on the inner wall of the annular groove. The inner wall of the annular protrusion is provided with multiple limit grooves in a circular array. The spring balls correspond to the limit grooves, so that the spring balls can be elastically inserted into the limit grooves to locate the position of the inner gear ring after rotation, thereby reducing the probability of thread backing out of the threaded rod.

[0011] Optionally, an annular protrusion is provided at one end of the smoke sensor body, a threaded hole corresponding to the threaded rod is provided at one end of the annular protrusion, a second bearing corresponding to the gear is provided on one side of the mounting plate, a rotating shaft is fixed in the second bearing, and the gear is fixed on the rotating shaft, so as to improve the stability of the gear rotation through the second bearing.

[0012] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art. Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described below at the same time:

[0013] By placing the smoke sensor body on a fireproof buffer pad and then manually pushing the inner gear ring to rotate, multiple gears are driven to rotate, which makes it convenient to drive multiple threaded rods to be screwed into the threaded holes at the same time, and drive multiple threaded rods to tighten the smoke sensor body at the same time, thereby improving the installation and disassembly efficiency of the smoke sensor body, and improving the disassembly and maintenance efficiency of the smoke sensor body. By setting a fireproof buffer pad, the smoke sensor body can be flexibly fastened. By setting the inner diameter of the inner gear ring to be larger than the outer diameter of the gear, the speed of driving the gear to rotate through the inner gear ring can be improved, and the efficiency of installing or disassembling the smoke sensor body through the threaded rod can be improved.

[0014] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0016] Figure 1This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0017] Figure 2 This is a schematic cross-sectional view of an embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a fireproof buffer pad according to an embodiment of the utility model;

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] Mounting plate 1, annular groove 101, first bearing 102, second bearing 103, rotating shaft 104, smoke sensor body 2, annular protrusion 201, threaded hole 202, gear 3, threaded rod 4, inner gear ring 5, anti-slip groove 501, annular protrusion 502, spring ball 503, limiting groove 504, fireproof buffer pad 6, and notch 601.

[0021] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0022] The utility model will now be further described in detail with reference to the accompanying drawings.

[0023] See also Figure 1-3 As shown, in this embodiment, a building fire alarm device is provided, including a mounting plate 1 and a smoke sensor body 2. A plurality of gears 3 are rotatably engaged on one side of the mounting plate 1, a threaded rod 4 is provided at one end of the gear 3, an inner gear ring 5 is rotatably engaged on one side of the mounting plate 1, the inner gear ring 5 is meshed with the plurality of gears 3, the inner diameter length of the inner gear ring 5 is greater than the outer diameter length of the gear 3, the plurality of threaded rods 4 are threadedly engaged with the smoke sensor body 2, a fireproof buffer pad 6 is provided on one side of the mounting plate 1, and the fireproof buffer pad 6 is located between the mounting plate 1 and the smoke sensor body 2.

[0024] By placing the smoke sensor body 2 on the fireproof buffer pad 6 and then manually pushing the inner gear ring 5 to rotate, driving multiple gears 3 to rotate, it is convenient to drive multiple threaded rods 4 to be screwed into the threaded holes 202 at the same time, and drive multiple threaded rods 4 to tighten the smoke sensor body 2 at the same time, so as to improve the installation and disassembly efficiency of the smoke sensor body 2, and to improve the disassembly and maintenance efficiency of the smoke sensor body 2. By setting the fireproof buffer pad 6, it is convenient to flexibly fasten the smoke sensor body 2. By setting the inner diameter length of the inner gear ring 5 to be larger than the outer diameter length of the gear 3, it is convenient to increase the speed of driving the gear 3 to rotate through the inner gear ring 5, and to increase the efficiency of installing or disassembling the smoke sensor body 2 through the threaded rod 4.

[0025] The fireproof buffer pad 6 of this embodiment is located between multiple gears 3. A notch 601 corresponding to the gear 3 is provided on the side of the fireproof buffer pad 6. The thickness of the fireproof buffer pad 6 is greater than the thickness of the gear 3, which facilitates the fireproof buffer pad 6 to be squeezed through the smoke sensor body 2, thereby facilitating the flexible fastening of the smoke sensor body 2.

[0026] The outer circumferential array of the inner gear ring 5 of the present embodiment has a plurality of anti-slip grooves 501, an annular groove 101 is provided on one side of the mounting plate 1, a first bearing 102 is fixed in the annular groove 101, an annular protrusion 502 is provided at the bottom end of the inner gear ring 5, and the annular protrusion 502 is fixed in the first bearing 102, so as to improve the rotation stability of the inner gear ring 5 through the first bearing 102, and to improve the stability of the meshing between the inner gear ring 5 and the gear 3.

[0027] The inner wall of the annular groove 101 of the present embodiment is embedded with a plurality of spring beads 503, and the plurality of spring beads 503 are arranged in a circular array on the inner wall of the annular groove 101. The inner wall of the annular protrusion 502 is provided with a plurality of limiting grooves 504 in a circular array. The spring beads 503 correspond to the limiting grooves 504, so that the spring beads 503 are elastically snapped into the limiting grooves 504 to locate the position of the inner gear ring 5 after rotation, thereby reducing the probability of the threaded rod 4 being stripped, and facilitating improving the fixing effect of the smoke sensor body 2.

[0028] In this embodiment, an annular protrusion 201 is provided at one end of the smoke sensor body 2, and a threaded hole 202 corresponding to the threaded rod 4 is provided at one end of the annular protrusion 201. A second bearing 103 corresponding to the gear 3 is provided on one side of the mounting plate 1. A rotating shaft 104 is fixed in the second bearing 103, and the gear 3 is fixed on the rotating shaft 104, so as to improve the rotation stability of the gear 3 through the second bearing 103, and to improve the stability of the meshing between the gear 3 and the inner gear ring 5.

[0029] Working principle: Place the smoke sensor body 2 on the fireproof buffer pad 6, and then manually push the inner gear ring 5 to rotate, driving multiple gears 3 to rotate, so as to drive multiple threaded rods 4 to be screwed into the threaded holes 202 at the same time, and drive multiple threaded rods 4 to tighten the smoke sensor body 2 at the same time, so as to improve the installation and disassembly efficiency of the smoke sensor body 2, and to improve the disassembly and maintenance efficiency of the smoke sensor body 2. By setting the fireproof buffer pad 6, it is convenient to flexibly tighten the smoke sensor body 2, and at the same time, the spring ball 503 is elastically inserted into the limit groove 504 to locate the position of the inner gear ring 5 after rotation, thereby reducing the probability of thread backing of the threaded rod 4, so as to improve the fixing effect of the smoke sensor body 2.

[0030] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0031] The present invention is not limited to the above-mentioned implementation modes. Anyone should be aware of the structural changes made under the inspiration of the present invention. Any technical solution that is the same or similar to the present invention falls within the protection scope of the present invention. The technology, shape, and structure that are not described in detail in the present invention are all known technologies.

Claims

1. A building fire alarm device, characterized in that: include: A mounting plate (1) and a smoke sensor body (2); a plurality of gears (3) are rotatably matched on one side of the mounting plate (1); a threaded rod (4) is provided at one end of the gear (3); an inner gear ring (5) is rotatably matched on one side of the mounting plate (1); the inner gear ring (5) meshes with the plurality of gears (3); the inner diameter of the inner gear ring (5) is greater than the outer diameter of the gear (3); the plurality of threaded rods (4) are threadedly matched with the smoke sensor body (2); a fireproof buffer pad (6) is provided on one side of the mounting plate (1); and the fireproof buffer pad (6) is located between the mounting plate (1) and the smoke sensor body (2).

2. A building fire alarm device according to claim 1, characterized in that: The fireproof buffer pad (6) is located between the plurality of gears (3), and a notch (601) corresponding to the gear (3) is provided on the side of the fireproof buffer pad (6), and the thickness of the fireproof buffer pad (6) is greater than the thickness of the gear (3).

3. A building fire alarm device according to claim 1, characterized in that: The outer circumferential array of the inner gear ring (5) has a plurality of anti-slip grooves (501); one side of the mounting plate (1) is provided with an annular groove (101); a first bearing (102) is fixed in the annular groove (101); an annular protrusion (502) is provided at the bottom end of the inner gear ring (5); and the annular protrusion (502) is fixed in the first bearing (102).

4. A building fire alarm device according to claim 3, characterized in that: A plurality of spring beads (503) are embedded in the inner wall of the annular groove (101), and the plurality of spring beads (503) are arranged in a circumferential array on the inner wall of the annular groove (101). The inner wall of the annular protrusion (502) is provided with a plurality of limiting grooves (504) in a circumferential array, and the spring beads (503) correspond to the limiting grooves (504).

5. A building fire alarm device according to claim 1, characterized in that the smoke An annular protrusion (201) is provided at one end of the sensor body (2), and a threaded hole (202) corresponding to the threaded rod (4) is provided at one end of the annular protrusion (201).

6. A building fire alarm device according to claim 1, characterized in that: A second bearing (103) corresponding to the gear (3) is provided on one side of the mounting plate (1), a rotating shaft (104) is fixed inside the second bearing (103), and the gear (3) is fixed on the rotating shaft (104).

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