Drawing type fire alarm

Abstract

The utility model discloses a drawing type fire alarm, which belongs to the field of alarms, and comprises a U-shaped frame, the upper end of the U-shaped frame is provided with a push-pull rod, the side wall of the U-shaped frame is provided with a rotating shaft, the side wall of the rotating shaft is rotatably connected with a compression ring pipe and a sound amplification ring pipe, the inner cavity of the compression ring pipe is communicated with the inner cavity of the sound amplification ring pipe, and the inner cavity of the sound amplification ring pipe is communicated with the push-pull rod. The side wall, located in the compression ring pipe, of the rotating shaft is rotationally connected with a driving gear, two symmetrically-arranged limiting shafts are installed on the inner wall of the compression ring pipe, the two limiting shafts are rotationally connected with driven gears correspondingly, the two ends of the driving gear are engaged with the two driven gears correspondingly, and a plurality of compression impellers are installed on the side wall of the driving gear and the side wall of the two driven gears correspondingly. The compression ring pipe is conveniently pushed through the push-pull rod, so that the two hands of a user are conveniently liberated, the user can conveniently run and escape in the process of using the device, and the device is simple in structure and convenient to use.

Description

Technical Field

[0001] The utility model relates to the field of alarms, and more specifically to a pull-out fire alarm. Background Art

[0002] Fire alarms are generally divided into automatic and pull-out (manual) types. Alarms are mostly used at the scene of a fire, and pull-out alarms are generally used when automatic alarms cannot be used effectively. Existing pull-out alarms are generally directly sampled and pulled manually, and manual pulling requires both hands to act at the same time, which prevents the user from running effectively. For this reason, we proposed a pull-out fire alarm. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a pull-out fire alarm, which can conveniently push the compression ring tube through the push-pull rod, thereby freeing the user's hands and making it convenient for the user to run and escape while using the device. The device has a simple structure and is easy to use.

[0005] 2. Technical solution

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A pull-out fire alarm comprises a U-shaped frame, a push-pull rod is installed at the upper end of the U-shaped frame, a rotating shaft is installed on the side wall of the U-shaped frame, the side wall of the rotating shaft is rotatably connected with a compression ring tube and a sound amplification ring tube, the inner cavities of the compression ring tube and the sound amplification ring tube are communicated, the side wall of the rotating shaft in the compression ring tube is rotatably connected with a driving gear, the inner wall of the compression ring tube is installed with two symmetrically arranged limit shafts, the two limit shafts are respectively rotatably connected with driven gears, the two ends of the driving gear are respectively meshed with two driven gears, a plurality of compression impellers are installed on the side walls of the driving gear and the two driven gears, the side wall of the rotating shaft in the inner cavity of the sound amplification ring tube is installed with two symmetrically arranged ring plates, and a plurality of release impellers are installed on the facing side walls of the two ring plates.

[0008] Furthermore, a plurality of air inlet holes are formed on the side wall of the compression ring tube away from the sound amplification ring tube, and a plurality of array-distributed clamping blocks are installed on the side wall of the compression ring tube away from the sound amplification ring tube. A fixed wheel is installed on the side wall where the rotating shaft is located between the compression ring tube and the inner wall of the adjacent U-shaped frame. The clamping block is detachably clamped to the fixed wheel, so that the clamping block can limit the fixed wheel and rotate the fixed wheel, thereby facilitating the fixed wheel to block the air inlet holes.

[0009] Furthermore, the side wall of the compression ring tube is provided with a plurality of air inlets distributed in an array, and the side wall of the compression ring tube is installed with rubber to facilitate the air to enter the inner cavity of the compression ring tube, increase the friction between the compression ring tube and the ground, and thus facilitate the rotation of the compression ring tube.

[0010] Furthermore, a truncated cone tube is provided on the side wall of the sound amplifying ring tube away from one end of the compression ring tube, and the ring plate is adjacent to the truncated cone tube, so that the air in the sound amplifying ring tube is released through the truncated cone tube to emit sound.

[0011] Furthermore, both ends of the rotating shaft are rotatably connected with nuts, and both ends of the rotating shaft arranged outside the U-shaped frame are provided with threads adapted to the nuts, so as to facilitate the limiting of the rotating shaft and prevent it from deflecting.

[0012] 3. Beneficial effects

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] (1) The utility model facilitates pushing the compression ring tube through the push-pull rod, thereby freeing the user's hands, and further facilitating the user to run and escape while using the device. The device has a simple structure and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural sectional view of the utility model;

[0016] Figure 2 This is the structural front view of the utility model;

[0017] Figure 3 This is a schematic diagram of the meshing of the driving gear and the driven gear of the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the ring plate and the release impeller of the utility model;

[0019] Figure 5 It is a structural side view of the utility model.

[0020] Description of the numbers in the figure:

[0021] 1. U-shaped frame; 2. Push-pull rod; 3. Rotating shaft; 4. Compression ring tube; 5. Driving gear; 6. Limiting shaft; 7. Driven gear; 8. Compression impeller; 9. Amplification ring tube; 10. Ring plate; 11. Release impeller; 12. Block; 13. Fixed wheel. DETAILED DESCRIPTION

[0022] The following will combine 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 the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments in the utility model belong to the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" 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 utility model can be understood according to specific circumstances.

[0025] Example 1: Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 A pull-out fire alarm comprises a U-shaped frame 1, a push-pull rod 2 is installed at the upper end of the U-shaped frame 1, a rotating shaft 3 is installed on the side wall of the U-shaped frame 1, the side wall of the rotating shaft 3 is rotatably connected with a compression ring tube 4 and a sound amplification ring tube 9, the inner cavities of the compression ring tube 4 and the sound amplification ring tube 9 are communicated, the side wall of the rotating shaft 3 in the compression ring tube 4 is rotatably connected with a driving gear 5, the inner wall of the compression ring tube 4 is installed with two symmetrically arranged limit shafts 6, the two limit shafts 6 are respectively rotatably connected with driven gears 7, the two ends of the driving gear 5 are respectively meshed with two driven gears 7, a plurality of compression impellers 8 are installed on the side walls of the driving gear 5 and the two driven gears 7, the side wall of the rotating shaft 3 in the inner cavity of the sound amplification ring tube 9 is installed with two symmetrically arranged ring plates 10, and the facing side walls of the two ring plates 10 are each installed with a plurality of release impellers 11.

[0026] A plurality of air inlet holes are provided on the side wall of the compression ring tube 4 away from the sound amplification ring tube 9, and a plurality of array-distributed clamping blocks 12 are installed on the side wall of the compression ring tube 4 away from the sound amplification ring tube 9. A fixed wheel 13 is installed on the side wall of the rotating shaft 3 between the compression ring tube 4 and the inner wall of the adjacent U-shaped frame 1. The clamping block 12 is detachably clamped to the fixed wheel 13, so that the clamping block 12 can limit the fixed wheel 13 and rotate the fixed wheel 13, thereby facilitating the fixed wheel 13 to block the air inlet holes.

[0027] The side wall of the compression ring tube 4 is provided with a plurality of air inlets distributed in an array, and the side wall of the compression ring tube 4 is installed with rubber to facilitate the air to enter the inner cavity of the compression ring tube 4, increase the friction between the compression ring tube 4 and the ground, and thus facilitate the rotation of the compression ring tube 4.

[0028] A truncated cone tube is provided on the side wall of the sound-amplifying ring tube 9 away from one end of the compression ring tube 4, and the ring plate 10 is adjacent to the truncated cone tube, so that the air in the sound-amplifying ring tube 9 is released through the truncated cone tube to make sound.

[0029] Both ends of the rotating shaft 3 are rotatably connected with nuts, and both ends of the rotating shaft 3 arranged outside the U-shaped frame 1 are provided with threads adapted to the nuts, which is convenient for limiting the rotating shaft 3 and preventing it from deflecting.

[0030] When in use, a technician in this field turns to the fixed wheel 13 to facilitate exposing the air inlet hole, and pushes or pulls the U-shaped frame 1 through the push-pull rod 2. In the process of pulling the U-shaped frame 1, the compression ring tube 4 is conveniently rotated on the ground through the rubber, and the driven gear 7 is driven to rotate through the limit shaft 6 during the rotation of the compression ring tube 4. The driven gear 7 engages the driving gear 5 during the rotation of the sound amplification ring tube 9, thereby facilitating the rotation of the driving gear 5, thereby facilitating the suction of external air into the inner cavity of the compression ring tube 4 for compression, and then the wind is discharged to the truncated cone tube of the sound amplification ring tube 9 through the ring plate 10 and the release impeller 11, thereby issuing an alarm sound. The utility model facilitates pushing the compression ring tube 4 through the push-pull rod 2, thereby facilitating the liberation of the user's hands, and thereby facilitating the user to run and escape during the use of the device, and the device has a simple structure and is easy to use.

[0031] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model and any equivalent replacement or change based on the technical solution and improved concept of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pull-out fire alarm, comprising a U-shaped frame (1), characterized in that: A push-pull rod (2) is installed at the upper end of the U-shaped frame (1), a rotating shaft (3) is installed on the side wall of the U-shaped frame (1), the side wall of the rotating shaft (3) is rotatably connected to a compression ring tube (4) and a sound amplification ring tube (9), the inner cavities of the compression ring tube (4) and the sound amplification ring tube (9) are connected, the side wall of the rotating shaft (3) in the compression ring tube (4) is rotatably connected to a driving gear (5), and the inner wall of the compression ring tube (4) is installed with two symmetrically arranged limit shafts (6 ), the two limit shafts (6) are rotatably connected to driven gears (7), the two ends of the driving gear (5) are respectively meshed with the two driven gears (7), the side walls of the driving gear (5) and the two driven gears (7) are both installed with a plurality of compression impellers (8), the side wall of the rotating shaft (3) in the inner cavity of the sound expansion ring tube (9) is installed with two symmetrically arranged ring plates (10), and the facing side walls of the two ring plates (10) are both installed with a plurality of release impellers (11).

2. A pull-out fire alarm according to claim 1, characterized in that: A plurality of air inlet holes are provided on the side wall of the compression ring tube (4) at one end away from the sound amplification ring tube (9); a plurality of array-distributed clamping blocks (12) are installed on the side wall of the compression ring tube (4) at one end away from the sound amplification ring tube (9); a fixed wheel (13) is installed on the side wall of the rotating shaft (3) located between the compression ring tube (4) and the inner wall of the adjacent U-shaped frame (1); and the clamping block (12) is detachably clamped to the fixed wheel (13).

3. A pull-out fire alarm according to claim 1, characterized in that: The side wall of the compression ring tube (4) is provided with a plurality of air inlets distributed in an array, and the side wall of the compression ring tube (4) is installed with rubber.

4. A pull-out fire alarm according to claim 1, characterized in that: A truncated cone tube is provided on the side wall of the sound expansion ring tube (9) at one end away from the compression ring tube (4), and the ring plate (10) is adjacent to the truncated cone tube.

5. The pull-out fire alarm according to claim 1, characterized in that: Both ends of the rotating shaft (3) are rotatably connected with nuts, and both ends of the rotating shaft (3) arranged outside the U-shaped frame (1) are provided with threads that are compatible with the nuts.

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