Smoke alarm convenient to disassemble and assemble

Abstract

The utility model relates to the technical field of smoke alarms, in particular to a smoke alarm convenient to disassemble and assemble, which comprises a fixing ring and a smoke alarm body, the lower end of the fixing ring is fixedly connected with a combination seat, the lower end of the combination seat is provided with a penetrating groove, and the left side and the right side of the inner wall of the penetrating groove are respectively provided with a fan-shaped limiting groove. The upper end of the smoke alarm body is fixedly connected with a connecting column extending into the penetrating groove. When the smoke alarm body is rotated, the two limiting discs can be rotated to the interiors of the two fan-shaped limiting grooves, at the moment, upward pushing force on the limiting plate is released, then the two limiting discs can be rotated to the interiors of the two limiting holes, installation is completed, the limiting plate is rotated through the smoke alarm body and the connecting column, and installation is completed. And the limiting plate corresponds to the penetrating groove in direction, so that the smoke alarm body can be disassembled, and the aims of facilitating the disassembly and assembly of the smoke alarm body and improving the daily maintenance convenience of the smoke alarm body are further achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke alarms, in particular to a smoke alarm which is easy to assemble and disassemble. Background Art

[0002] Smoke alarms monitor smoke concentrations to prevent fires. They use ionized smoke sensors, widely used in various fire alarm systems. When smoke particles enter the sensor, they disrupt the current flow, causing the alarm to sound. To facilitate assembly and disassembly of smoke alarms, a readily disassembled smoke alarm is required.

[0003] In the prior art, most smoke alarms are fixed to the ceiling by screws. When performing routine maintenance on the smoke alarm, workers need to use a screwdriver to remove or install the screws to separate or fix the smoke alarm from the ceiling, which is very inconvenient. Therefore, it is necessary to propose a smoke alarm that is easy to disassemble and assemble to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to provide a smoke alarm that is easy to disassemble and assemble, and has the characteristics of being easy to disassemble and assemble the smoke alarm body, thereby improving the convenience of daily maintenance of the smoke alarm body.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a smoke alarm that is easy to disassemble and assemble, comprising a fixing ring and a smoke alarm body, wherein the lower end of the fixing ring is fixedly connected to a coupling seat, the lower end of the coupling seat is provided with a penetration groove, and the left and right sides of the inner wall of the penetration groove are provided with fan-shaped limiting grooves, the upper end of the smoke alarm body is fixedly connected to a connecting column extending into the interior of the penetration groove, the upper end of the connecting column is fixedly connected to a limiting plate extending into the interior of two fan-shaped limiting grooves, the lower ends of the inner walls of the two fan-shaped limiting grooves are provided with limiting holes, and the lower end of the limiting plate is fixedly connected to two limiting disks extending into the interior of the limiting holes;

[0006] The upper end of the inner wall of the penetration groove is fixedly connected to two guide cylinders, the interior of the two guide cylinders is fixedly connected to a disc, the outer walls of the two discs are penetrated and slidably connected to a sliding rod, the lower ends of the two sliding rods are fixedly connected to an extrusion disc abutting the upper end of the limiting plate, the outer walls of the two sliding rods are sleeved with compression springs, and the upper and lower ends of the two compression springs are fixedly connected to the two discs and the two extrusion discs respectively.

[0007] In order to facilitate the positioning of the horizontal installation position of the smoke alarm body, as a preferred smoke alarm that is easy to disassemble and assemble in the present invention, the outer wall of the extrusion disk is fixedly connected to a positioning ring, the lower end of the positioning ring is provided with an annular positioning groove, and the upper end of the smoke alarm body is fixedly connected to two positioning rods that extend into the inside of the annular positioning groove and cooperate with it.

[0008] In order to prevent the two slide bars from being separated from the two discs, as a preferred smoke alarm that is easy to disassemble and assemble according to the present invention, the upper ends of the two slide bars are fixedly connected to an anti-separation plate.

[0009] In order to prevent the two anti-slip plates, the two sliding rods, the two compression springs and the two extrusion disks from rotating, as a preferred smoke alarm that is easy to disassemble and assemble, the two anti-slip plates are slidably connected to the front and rear sides of the inner walls of the two guide cylinders through slide rails.

[0010] In order to facilitate the entry and exit of the limiting plate into the penetration groove, as a smoke alarm that is easy to disassemble and assemble of the present invention, the distance between the left and right sides of the inner wall of the penetration groove is preferably smaller than the distance between the front and rear sides of the limiting plate.

[0011] In order to facilitate the installation and fixing of the device on the ceiling, as a preferred smoke alarm that is easy to assemble and disassemble of the present invention, the outer wall of the fixing ring is fixedly connected with a mounting ring.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] The two limiting plates are located at a position slightly above the bottom side of the inner wall of the two sector-shaped limiting grooves, and then the two limiting plates can be rotated to the inside of the two sector-shaped limiting grooves when the smoke alarm body is rotated. At this time, the upward pushing force on the limiting plates is released, and the two limiting plates can be rotated to the inside of the two limiting holes to complete the installation. At this time, the two compression springs and the two extrusion plates can apply downward pressure to the limiting plates, thereby preventing the two limiting plates from being separated from the inside of the two limiting holes without external force, and the positions of the smoke alarm body, the connecting column and the limiting plate can be restricted by the two limiting plates and the two limiting holes.

[0014] When the smoke alarm body is to be removed, it is necessary to push the limiting plate upwards, so that the two limiting plates can be disengaged from the inside of the two limiting holes, and then the limiting plate is rotated through the smoke alarm body and the connecting column until the limiting plate corresponds to the direction of the insertion groove, so that the smoke alarm body can be removed, further facilitating the disassembly and assembly of the smoke alarm body, thereby improving the convenience of daily maintenance of the smoke alarm body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall front sectional view of the present utility model;

[0016] Figure 2 For the utility model Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 This is the external structure diagram of the coupling seat of the utility model;

[0018] Figure 4 This is a bottom view of the limiting plate and the limiting disc of the present invention.

[0019] In the figure: 1. fixing ring; 2. smoke alarm body; 3. coupling seat; 4. insertion groove; 5. fan-shaped limiting groove; 6. connecting column; 7. limiting plate; 8. limiting hole; 9. limiting disk; 10. guide cylinder; 11. circular disk; 12. sliding rod; 13. squeezing disk; 14. compression spring; 15. anti-slip plate; 16. slide rail; 17. positioning ring; 18. annular positioning groove; 19. positioning rod. DETAILED DESCRIPTION

[0020] See also Figures 1 to 4 , a smoke alarm that is easy to disassemble and assemble, includes a fixing ring 1 and a smoke alarm body 2, the lower end of the fixing ring 1 is fixedly connected with a combining seat 3, the lower end of the combining seat 3 is provided with a penetration groove 4, and the left and right sides of the inner wall of the penetration groove 4 are provided with fan-shaped limiting grooves 5, the upper end of the smoke alarm body 2 is fixedly connected with a connecting column 6 extending to the inside of the penetration groove 4, the upper end of the connecting column 6 is fixedly connected with a limiting plate 7 extending to the inside of the two fan-shaped limiting grooves 5, the lower ends of the inner walls of the two fan-shaped limiting grooves 5 are provided with limiting holes 8, and the lower end of the limiting plate 7 is fixedly connected to two limiting plates 9 extending to the inside of the limiting holes 8;

[0021] Two guide cylinders 10 are fixedly connected to the upper end of the inner wall of the penetration groove 4, and a disc 11 is fixedly connected to the inside of the two guide cylinders 10. The outer walls of the two discs 11 are penetrated and slidably connected with slide rods 12. The lower ends of the two slide rods 12 are fixedly connected to an extrusion disk 13 abutting the upper end of the limiting plate 7. The outer walls of the two slide rods 12 are sleeved with compression springs 14, and the upper and lower ends of the two compression springs 14 are fixedly connected to the two discs 11 and the two extrusion disks 13 respectively.

[0022] In this embodiment: When the smoke alarm body 2 is to be installed, the direction of the limiting plate 7 needs to be adjusted to correspond to the insertion groove 4, and then the limiting plate 7 can be inserted into the inside of the insertion groove 4, and at the same time, the two positioning rods 19 are inserted into the inside of the annular positioning groove 18 until the limiting plate 7 contacts the lower ends of the two extrusion plates 13, and then the limiting plate 7 is pushed upward through the smoke alarm body 2 and the connecting column 6, thereby causing the two extrusion plates 13 and the two slide bars 12 to move upward, and compressing the two compression springs 14 until the two extrusion plates 13 abut against the two guide cylinders 10. At this time, the two limiting plates 9 installed at the lower end of the limiting plate 7 are just located above the bottom side of the inner wall of the two fan-shaped limiting grooves 5. The position of the smoke alarm body 2, the connecting column 6, the limiting plate 7 and the two limiting plates 9 are rotated, and the two limiting plates 9 can be rotated to the inside of the two fan-shaped limiting grooves 5. At this time, the upward pushing force on the limiting plate 7 is released, and then when the limiting plate 7 and the two limiting plates 9 are continued to be rotated, the two limiting plates 9 can be rotated to the inside of the two limiting holes 8 to complete the installation. At this time, the two compression springs 14 and the two extrusion plates 13 can apply downward pressure to the limiting plate 7, thereby preventing the two limiting plates 9 from being separated from the inside of the two limiting holes 8 without external force, and the positions of the smoke alarm body 2, the connecting column 6 and the limiting plate 7 can be limited by the two limiting plates 9 and the two limiting holes 8.

[0023] When the smoke alarm body 2 is to be removed, it is necessary to push the smoke alarm body 2, the connecting column 6, and the limiting plate 7 upwards, so that the two extrusion plates 13 can abut against the two guide cylinders 10. At this time, the two limit plates 9 are disengaged from the inside of the two limit holes 8, and then the limiting plate 7 is rotated through the smoke alarm body 2 and the connecting column 6 until the limiting plate 7 corresponds to the direction of the insertion groove 4, so that the smoke alarm body 2 can be removed, further achieving the purpose of facilitating the disassembly and assembly of the smoke alarm body 2, thereby improving the convenience of daily maintenance of the smoke alarm body 2.

[0024] As a technical optimization solution of the present invention, a positioning ring 17 is fixedly connected to the outer wall of the extrusion disk 13, and an annular positioning groove 18 is provided at the lower end of the positioning ring 17. The upper end of the smoke alarm body 2 is fixedly connected to two positioning rods 19 that extend into the inside of the annular positioning groove 18 and cooperate with it.

[0025] In this embodiment, the annular positioning groove 18 and the two positioning rods 19 are matched with each other, and since the two positioning rods 19 can rotate with the smoke alarm body 2, the horizontal installation position of the smoke alarm body 2 can be positioned.

[0026] As a technical optimization solution of the present invention, the upper ends of the two sliding rods 12 are fixedly connected with anti-slip plates 15.

[0027] In this embodiment, two anti-slip plates 15 are provided to prevent the two slide bars 12 from being detached from the two disks 11 .

[0028] As a technical optimization solution of the present invention, the two anti-slip plates 15 are slidably connected to the front and rear sides of the inner walls of the two guide cylinders 10 via slide rails 16.

[0029] In this embodiment, the slide rail 16 is provided to prevent the two anti-slip plates 15 , the two slide bars 12 , the two compression springs 14 and the two extrusion disks 13 from rotating.

[0030] As a technical optimization solution of the present invention, the distance between the left and right sides of the inner wall of the penetration groove 4 is smaller than the distance between the front and rear sides of the limiting plate 7.

[0031] In this embodiment, the distance between the left and right sides of the inner wall of the penetration groove 4 is made smaller than the distance between the front and rear sides of the limiting plate 7 , thereby facilitating the limiting plate 7 to enter and exit the interior of the penetration groove 4 .

[0032] As a technical optimization solution of the present invention, the outer wall of the fixing ring 1 is fixedly connected with a mounting ring.

[0033] In this embodiment, a mounting ring is provided to facilitate the installation and fixing of the device on the ceiling.

[0034] Working principle: When installing the smoke alarm body 2, first adjust the direction of the limiting plate 7 to correspond to the insertion groove 4, and then insert the limiting plate 7 into the inside of the insertion groove 4, and at the same time make the two positioning rods 19 enter the inside of the annular positioning groove 18, and because the two positioning rods 19 can rotate with the smoke alarm body 2, the horizontal installation position of the smoke alarm body 2 can be positioned until the limiting plate 7 contacts the lower ends of the two extrusion plates 13, and then the limiting plate 7 is pushed upward through the smoke alarm body 2 and the connecting column 6, thereby causing the two extrusion plates 13 and the two slide bars 12 to move upward, and compress the two compression springs 14 until the two extrusion plates 13 abut against the two guide cylinders 10, and then installed at the lower end of the limiting plate 7. The two limiting plates 9 are just located at a position slightly above the bottom side of the inner wall of the two sector-shaped limiting grooves 5, and then the smoke alarm body 2, the connecting column 6, the limiting plate 7 and the two limiting plates 9 are rotated, and the two limiting plates 9 can be rotated to the inside of the two sector-shaped limiting grooves 5. At this time, the upward pushing force on the limiting plates 7 is released, and then when the limiting plates 7 and the two limiting plates 9 are continued to be rotated, the two limiting plates 9 can be rotated to the inside of the two limiting holes 8 to complete the installation. At this time, the two compression springs 14 and the two extrusion plates 13 can apply downward pressure to the limiting plate 7, thereby preventing the two limiting plates 9 from being separated from the inside of the two limiting holes 8 without external force, and the positions of the smoke alarm body 2, the connecting column 6 and the limiting plate 7 can be limited by the two limiting plates 9 and the two limiting holes 8.

[0035] When the smoke alarm body 2 is to be removed, it is necessary to push the smoke alarm body 2, the connecting column 6, and the limiting plate 7 upwards, so that the two extrusion plates 13 can abut against the two guide cylinders 10. At this time, the two limit plates 9 are disengaged from the inside of the two limit holes 8, and then the limiting plate 7 is rotated through the connecting column 6 until the limiting plate 7 corresponds to the direction of the insertion groove 4, so that the smoke alarm body 2 can be removed, further achieving the purpose of facilitating the disassembly and assembly of the smoke alarm body 2, thereby improving the convenience of daily maintenance of the smoke alarm body 2.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A smoke alarm that is easy to assemble and disassemble, comprising a fixing ring (1) and a smoke alarm body (2), characterized in that: The lower end of the fixing ring (1) is fixedly connected to a coupling seat (3), the lower end of the coupling seat (3) is provided with a penetration groove (4), the left and right sides of the inner wall of the penetration groove (4) are provided with fan-shaped limiting grooves (5), the upper end of the smoke alarm body (2) is fixedly connected to a connecting column (6) extending into the inside of the penetration groove (4), the upper end of the connecting column (6) is fixedly connected to a limiting plate (7) extending into the inside of the two fan-shaped limiting grooves (5), the lower ends of the inner walls of the two fan-shaped limiting grooves (5) are provided with limiting holes (8), and the lower end of the limiting plate (7) is fixedly connected to two limiting plates (9) extending into the inside of the limiting holes (8); The upper end of the inner wall of the penetration groove (4) is fixedly connected to two guide cylinders (10), the interior of the two guide cylinders (10) is fixedly connected to a disc (11), the outer walls of the two discs (11) are penetrated and slidably connected to a slide rod (12), the lower ends of the two slide rods (12) are fixedly connected to an extrusion disc (13) abutting against the upper end of the limiting plate (7), the outer walls of the two slide rods (12) are sleeved with a compression spring (14), and the upper and lower ends of the two compression springs (14) are fixedly connected to the two discs (11) and the two extrusion discs (13) respectively.

2. The smoke alarm that is easy to assemble and disassemble according to claim 1, characterized in that: The outer wall of the extrusion disk (13) is fixedly connected to a positioning ring (17), the lower end of the positioning ring (17) is provided with an annular positioning groove (18), and the upper end of the smoke alarm body (2) is fixedly connected to two positioning rods (19) extending into the annular positioning groove (18) and cooperating therewith.

3. The smoke alarm that is easy to assemble and disassemble according to claim 1, characterized in that: The upper ends of the two sliding rods (12) are both fixedly connected with anti-slip plates (15).

4. The smoke alarm that is easy to assemble and disassemble according to claim 3, characterized in that: The two anti-slip plates (15) are slidably connected to the front and rear sides of the inner walls of the two guide cylinders (10) via slide rails (16).

5. The smoke alarm that is easy to assemble and disassemble according to claim 1, characterized in that: The distance between the left and right sides of the inner wall of the penetration groove (4) is smaller than the distance between the front and rear sides of the limiting plate (7).

6. The smoke alarm that is easy to assemble and disassemble according to claim 1, characterized in that: The outer wall of the fixing ring (1) is fixedly connected with a mounting ring.

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