Smoke alarm with replaceable maze

Abstract

The utility model provides a smoke alarm with a replaceable maze, which comprises a shell, the shell is provided with a face shell and a bottom shell, the face shell is provided with an installation cavity, the maze is detachably arranged in the installation cavity, and a fixing plate for limiting and fixing the maze in the installation cavity is rotatably and detachably arranged on the face shell. The upper surface of the face shell is provided with at least one buckle protruding upwards, the fixing plate is provided with a clamping groove matched with the buckle, and the fixing plate is sleeved with the buckle in an aligned mode through the clamping groove and then horizontally rotates to form a clamping position so as to be fixedly connected with the face shell. The face shell is provided with an installation cavity structure matched with the maze structure, the maze can be stably installed in the alarm and can be conveniently disassembled by being matched with a fixing plate which is rotationally disassembled and assembled, the maze can be rapidly replaced without disassembling when the maze is maintained, time is saved, and when the maze is polluted and the alarm cannot be used in the using process of a client, the maze can be replaced conveniently. The maze does not need to be returned and repaired, the maze can be automatically replaced, and time and unnecessary cost are saved.

Description

Technical Field

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

[0002] The core component of current smoke alarms, the maze, is easily contaminated under special circumstances or in a dusty environment, causing it to self-alarm or fail. At this time, users cannot use it normally and can only return the alarm to the factory for repair or replacement. In the production process of the alarm, there will also be situations where the alarm self-alarms or the maze fails and the maze needs to be replaced. Under normal circumstances, it needs to be disassembled for repair, which will result in a waste of materials, time and manpower.

[0003] In the assembly of conventional smoke alarms, since the maze is inside the alarm, the alarm needs to be disassembled when the maze is replaced. During the actual disassembly process, problems such as component damage and plastic deformation may occur. The use of a new maze disassembly and assembly method can effectively avoid these problems. Utility Model Content

[0004] In view of this, the utility model provides a smoke alarm with a replaceable maze.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A smoke alarm with a replaceable labyrinth comprises a shell, wherein the shell is provided with a front shell and a bottom shell, the front shell is provided with a mounting cavity, a labyrinth is detachably provided in the mounting cavity, and a fixing plate for restricting and fixing the labyrinth in the mounting cavity is rotatably and detachably provided on the front shell.

[0007] In the preferred technical solution, the upper surface of the face shell is provided with at least one upwardly protruding buckle, and the fixing plate is provided with a slot matching the buckle. The fixing plate is formed into a locking position by aligning the slot with the buckle and then rotating horizontally to fix the face shell.

[0008] In the preferred technical solution, a plurality of vertical guide rails are provided in the installation cavity, the guide rails protrude inwardly from the side walls of the installation cavity, a plurality of guide grooves matching the guide rails are provided on the side surfaces of the maze, and the maze is embedded in the installation cavity through the cooperation of the guide grooves and the guide rails.

[0009] In the preferred technical solution, a top plate is provided on the top of the maze, a plurality of cam grooves are provided on the side of the top plate, a plurality of cams matching the cam grooves are provided on the bottom of the fixed plate, the cross section of the cam is "L" shaped, and the bottom of the cam is embedded under the top plate through the cam grooves.

[0010] In the preferred technical solution, a first PCB is provided at the bottom of the maze, a second PCB is provided in the shell, a plurality of sockets are provided at positions corresponding to the mounting cavity on the second PCB, a plurality of pins matching the sockets are provided at the bottom of the first PCB, and when the maze is embedded in the mounting cavity, the pins are inserted into the sockets to connect to the second PCB.

[0011] In the preferred technical solution, the side of the surface shell is provided with a plurality of ventilation holes penetrating the inside and the outside, the outer shell is provided with a smoke guide plate, and at least two partitions are vertically provided on the smoke guide plate.

[0012] It can be seen from the above technical solutions that, compared with the prior art, the present invention has the following beneficial technical effects:

[0013] The face shell is provided with an installation cavity structure that matches the maze structure. Together with the rotating and disassembly fixing plate, the maze can be stably installed in the alarm and easily disassembled. When repairing the maze, there is no need to disassemble the machine and the maze can be quickly replaced, saving time. If the alarm cannot be used due to contamination of the maze during use, there is no need to send it back for repair and the maze can be replaced by the customer, saving time and unnecessary expenses. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0015] Figure 1 It is an exploded view of the utility model.

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0017] Figure 3 The decomposition structure of the utility model is shown in FIG. Figure 1 .

[0018] Figure 4 The decomposition structure of the utility model is shown in FIG. Figure 2 .

[0019] Figure numbers: 100, shell; 110, surface shell; 120, bottom shell; 130, installation cavity; 200, labyrinth; 140, fixing plate; 111, buckle; 141, slot; 131, guide rail; 210, guide groove; 221, convex groove; 142, convex; 220, top plate; 230, first PCB; 150, second PCB; 151, socket; 231, pin; 112, vent; 160, smoke guide plate; 161, partition. DETAILED DESCRIPTION

[0020] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0021] In the description of the present application, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" 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 application 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 application. In the description of the present application, unless otherwise specified, "plurality" means two or more.

[0022] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0023] A smoke alarm with a replaceable maze, see Figure 1-4, including a shell 100, the shell 100 is the shell structure of the whole alarm, the shell 100 includes a face shell 110 and a bottom shell 120, the face shell 110 and the bottom shell 120 are combined to form the shell 100, the face shell 110 is provided with an installation cavity 130, the installation cavity 130 is formed on the face shell 110, and the installation cavity 130 is recessed in the upper surface of the face shell 110; a maze 200 is detachably provided in the installation cavity 130, and the maze 200 is vertically embedded in the installation cavity 130 for easy installation; a fixing plate 140 is rotatably and disassembled on the face shell 110 to restrict and fix the maze 200 in the installation cavity 130; the fixing plate 140 is connected to the face shell 110 to restrict the maze 200 in the installation cavity 130 and prevent it from falling out of the installation cavity 130, the fixing plate 140 is connected to the face shell 110 by rotating and locking, and no tools are required for disassembly and assembly, which is convenient for replacing the maze 200.

[0024] Furthermore, two buckles 111 protruding upward are provided on the upper surface of the face shell 110, and the buckles 111 are hook-shaped structures. The number and shape of the buckles 111 are not limited to the present embodiment; the fixing plate 140 is provided with two slots 141 matching the buckles 111, and the slots 141 are arc-shaped to correspond to the rotating structure of the fixing plate 140 when disassembling and assembling. One end of the slot 141 is wider, and the buckles 111 can pass through. After the fixing plate 140 rotates, the hook-shaped structure of the buckles 111 buckles The narrower side of the slot 141 is used to form a snap-fit ​​fixation between the face shell 110 and the fixing plate 140. During installation, the fixing plate 140 is inserted into the snap-fit ​​111 by aligning the wider end of the slot 141. The snap-fit ​​111 protrudes from the upper surface of the fixing plate 140. The fixing plate 140 is then rotated horizontally to form a snap position so that the fixing plate 140 is fixedly connected to the face shell 110. The fixing plate 140 is rotated clockwise / counterclockwise to achieve lock / unlock with the face shell 110, which is convenient for disassembly and assembly.

[0025] Furthermore, three vertical guide rails 131 are provided in the installation cavity 130, and the guide rails 131 protrude inwardly from the side walls of the installation cavity 130. Guide grooves 210 matching the guide rails 131 are provided on the sides of the maze 200. The guide grooves 210 in this embodiment are respectively formed on the top plate 220 of the maze 200 and the side of the first PCB 230. In other embodiments, the guide grooves 210 can be provided on the side of the maze 200 body or other positions. The purpose is to cooperate with the guide rails 131 through the guide grooves 210 so that the maze 200 can be aligned and vertically embedded in the installation cavity 130, limit the installation position of the maze 130, facilitate installation, and prevent the maze 200 from rotating horizontally, thereby ensuring the stable installation of the maze 200.

[0026] Furthermore, a top plate 220 is provided on the top of the maze 200, and the outer side of the top plate 220 protrudes from the side of the maze 200 body, so that the top of the maze 200 forms an outer eaves-like structure, and three convex grooves 221 are provided on the side of the top plate 220, and the convex grooves 221 are horizontally recessed in the side of the top plate 220. The bottom surface of the fixing plate 140 is provided with three convex grooves 142 matching the convex grooves 221, and the convex grooves protrude downward from the bottom surface of the fixing plate 140, and the cross section of the convex grooves 142 is " The fixing plate 140 is in an L" shape, and the protrusion 142 is embedded under the top plate 220 through the protrusion groove 221. When the fixing plate 140 is installed on the face shell 110, the bottom of the protrusion 142 is embedded under the top plate 220. When the fixing plate 140 is rotated, the bottom of the protrusion 142 forms a buckle connection with the top plate 220. When the fixing plate 140 is unlocked from the face shell 110 by rotation, the fixing plate 140 can still maintain the buckle with the top plate 220 by rotation, so that when the user replaces the maze 200, such as Figure 3 As shown, when removing the fixing plate 140, the maze 200 can be clamped by the clamping protrusion 142 and taken out, and then the maze 200 is rotated to make the positions of the clamping protrusion 142 and the clamping protrusion groove 221 correspond to each other, and then taken out from the fixing plate 140 for replacement. The whole process does not require tools, and the replacement of the maze 200 is very convenient. When installing the maze 200, as shown in FIG. Figure 4 As shown, the maze 200 is first installed in the installation cavity 130, and then the fixing plate 140 is installed.

[0027] Furthermore, a first PCB 230 is provided at the bottom of the maze 200, a second PCB 150 is provided in the housing 100, a plurality of sockets 151 are provided at positions corresponding to the mounting cavity 130 on the second PCB 150, a plurality of pins 231 matching the sockets 151 are provided at the bottom of the first PCB 230, and when the maze 200 is embedded in the mounting cavity 130, the pins 231 are inserted into the sockets 151 to connect to the second PCB 150, and this connection structure can ensure that when the maze 200 is replaced, it is convenient to connect to the second PCB 150, and the setting position of the sockets 151 is fixedly corresponding to the pins 231, and the maze 200 is connected to the second PCB 150. The guide rail 131 is embedded in the installation cavity 130 at a fixed angle, and the pin 231 can be inserted into the socket 151 at the same time, ensuring that when the maze 200 is replaced, the maze 200 can be smoothly connected to the second PCB 150, so that the alarm can work normally; a plurality of ventilation holes 112 that pass through the inside and outside of the face shell 110 are provided on the side, and the ventilation holes 112 allow the smoke outside the alarm to enter the outer shell 100, and a smoke guide plate 160 is provided in the outer shell 100, and two partitions 161 are vertically provided on the smoke guide plate 160, and the partitions 161 can guide the smoke to the maze 200, thereby improving the accuracy of smoke detection.

[0028] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A smoke alarm with a replaceable maze, characterized in that: The invention comprises a shell (100), wherein the shell (100) is provided with a front shell (110) and a bottom shell (120), wherein the front shell (110) is provided with an installation cavity (130), wherein a maze (200) is detachably provided in the installation cavity (130), and a fixing plate (140) is rotatably and detachably provided on the front shell (110) for restricting and fixing the maze (200) in the installation cavity (130).

2. A smoke alarm with a replaceable maze according to claim 1, characterized in that: The upper surface of the face shell (110) is provided with at least one buckle (111) protruding upward, and the fixing plate (140) is provided with a slot (141) matching the buckle (111). The fixing plate (140) is formed into a locking position by inserting the slot (141) into the buckle (111) and then rotating horizontally to fix the face shell (110).

3. The smoke alarm with replaceable maze according to claim 1, characterized in that: A plurality of vertical guide rails (131) are arranged in the installation cavity (130), and the guide rails (131) protrude inwardly from the side wall of the installation cavity (130). A plurality of guide grooves (210) matching the guide rails (131) are arranged on the side of the maze (200), and the maze (200) is embedded in the installation cavity (130) through the cooperation of the guide grooves (210) and the guide rails (131).

4. The smoke alarm with replaceable maze according to claim 1, characterized in that: The top of the maze (200) is provided with a top plate (220), the side of the top plate (220) is provided with a plurality of convex grooves (221), the bottom surface of the fixed plate (140) is provided with a plurality of convex grooves (142) matching the convex grooves (221), the cross section of the convex grooves (142) is "L" shaped, and the bottom of the convex grooves (142) is embedded under the top plate (220) through the convex grooves (221).

5. The smoke alarm with replaceable maze according to claim 1, characterized in that: A first PCB (230) is provided at the bottom of the maze (200), a second PCB (150) is provided in the housing (100), a plurality of sockets (151) are provided at positions corresponding to the mounting cavity (130) on the second PCB (150), a plurality of pins (231) matching the sockets (151) are provided at the bottom of the first PCB (230), and when the maze (200) is embedded in the mounting cavity (130), the pins (231) are inserted into the sockets (151) to connect to the second PCB (150).

6. The smoke alarm with replaceable maze according to claim 1, characterized in that: The side of the surface shell (110) is provided with a plurality of ventilation holes (112) penetrating the inside and the outside. A smoke guide plate (160) is provided inside the outer shell (100), and at least two partitions (161) are vertically provided on the smoke guide plate (160).

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