Smoke sensing alarm device

Abstract

The utility model discloses a smoke sensing alarm device, which comprises a main body and a mounting seat, the peripheral side of the main body is provided with a mounting part which protrudes and extends outwards, the mounting part is provided with a mounting port, the mounting seat is provided with a raised mounting structure, and the main body and the mounting seat can move relatively to enable the mounting structure and the mounting port to be matched and fixed. When the main body is installed, the installation structure penetrates through the installation opening from top to bottom, and the main body and the installation base move relatively to achieve matching of the installation structure and the installation opening. And the main body does not shield the mounting part, so that a user can clearly see the position state of the mounting port, and positioning with a mounting structure is facilitated. When the main body is installed, a user looks up from the lower side for operation, the user can observe the position of the installation structure on the installation base and the matching state of the installation structure and the installation opening through the installation opening, and therefore the position of the main body can be adjusted more conveniently to achieve positioning of the installation structure and the installation opening. And relative movement of the main body and the mounting seat is pushed to realize matched fixation of the mounting structure and the mounting port.

Description

Technical Field

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

[0002] In the tobacco manufacturing industry, tobacco leaves are usually prepared and blended in tobacco stations. As tobacco leaves are flammable products, strict fire prevention measures need to be taken. Therefore, the sensitivity of smoke alarms is usually increased for fire alarm and prevention. During the tobacco preparation process, high-temperature steam or particulate dust is generated, which can easily cause false triggering of smoke alarms, requiring the smoke alarms to be removed, reset and reinstalled multiple times.

[0003] Smoke alarms monitor smoke concentrations to provide fire warning and prevention, and smoke generally floats upward and spreads. Therefore, in order to enable smoke alarms to monitor a larger spatial range of the smoke station, smoke alarms are generally installed at higher positions on the roof or wall.

[0004] The smoke alarm generally includes a mounting base and a main body. During installation, the mounting base is first fixed to the roof or wall, and then the main body is fixed to the mounting base. The main body and the mounting base are usually connected by threads or snaps, but no matter which method is used, the fixing structure is set on the inner side of the main body. When installing the main body, it is often necessary to look up to operate. The outer shell of the main body blocks the inner fixing structure, which makes it impossible for the user to directly observe the relative position relationship between the internal fixing structure and the mounting base. It is difficult to accurately locate the installation position of the fixed structure, and the installation operation can only be performed by feel, which leads to the need to repeatedly try the position of the main body, which makes the operation of installing the smoke alarm more difficult and the installation efficiency is low. This results in the user having to hold up the smoke alarm for a long time when installing the smoke alarm, which is time-consuming and laborious. Utility Model Content

[0005] The utility model provides a smoke alarm device to solve the problem of inaccurate installation position positioning of a body and a mounting seat fixing structure when installing a smoke alarm, and great difficulty in operation leading to low installation efficiency.

[0006] The technical solution adopted by the utility model is:

[0007] A smoke alarm device comprises a main body and a mounting seat, wherein a mounting portion protruding and extending outward is arranged on the peripheral side of the main body, the mounting portion is provided with a mounting opening, and the mounting seat is provided with a raised mounting structure, and the main body and the mounting seat can move relative to each other so that the mounting structure is matched and fixed with the mounting opening.

[0008] The smoke alarm device of the utility model also has the following additional technical features:

[0009] The mounting structure is a hook, which includes a first extension section connected to the mounting seat and a second extension section that is bent relative to the first extension section and extends laterally. A slot is formed between the second extension section and the mounting seat, and the main body and the mounting seat can rotate relative to each other so that the edge of the mounting opening enters or moves out of the slot.

[0010] The second extension section is provided with a fixing protrusion protruding toward the inside of the slot at the opening of the slot, and the fixing protrusion and the mounting seat clamp and fix the mounting portion from both sides, or the fixing protrusion is clamped with the edge of the mounting opening.

[0011] The surface of the fixing protrusion is provided with a transition cambered surface.

[0012] A guiding slope is arranged on a side of the second extension section away from the mounting seat and / or an edge of the mounting opening facing the mounting seat.

[0013] There are a plurality of mounting openings which are arranged at intervals along the circumference of the main body. The mounting openings extend along the circumferential direction of the main body. The mounting structures are arranged in one-to-one correspondence with the mounting openings.

[0014] The mounting seat has a fixing side for fixing to a wall, and a mating side facing the main body, and the peripheral side of the mounting seat is provided with at least one positioning portion protruding toward the mating side, and the positioning portion is used to cooperate with the edge of the mounting portion to position the main body.

[0015] The mounting seat is provided with at least one fixing through hole, and the smoke alarm device further comprises a fastener, which is used to pass through the fixing through hole to fix the mounting seat to the wall, and the matching side is recessed at the fixing through hole to form an accommodating groove.

[0016] A clamping claw is disposed at one end of the positioning portion away from the mounting seat, an installation space is formed between the clamping claw and the mounting seat, and the mounting portion is located in the installation space.

[0017] The main body has a contraction portion, the cross-sectional area of ​​which gradually decreases in a direction away from the mounting portion, the contraction portion is provided with an anti-slip area, the anti-slip area extends along the circumference of the main body, and the anti-slip area is provided with anti-slip lines.

[0018] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0019] 1. In the utility model, when installing the main body, the mounting structure passes through the mounting opening from top to bottom, and the main body and the mounting seat move relative to each other to achieve the matching of the mounting structure and the mounting opening. First, the mounting portion protrudes outward from the outside of the main body, so that the main body does not block the mounting portion, and the user can clearly see the position state of the mounting opening on the mounting portion, thereby facilitating the positioning with the mounting structure on the mounting seat. Secondly, the mounting portion is provided with the mounting opening, and the mounting seat is provided with the protruding mounting structure. The mounting structure passes through the mounting opening from top to bottom to complete the matching. When installing the main body, the user looks up from the bottom of the smoke alarm device to operate. At this time, the mounting opening forms an avoidance opening for the user's line of sight. The user can observe the position of the mounting structure on the mounting seat and the matching state with the mounting opening through the mounting opening, thereby making it easier to adjust the position of the main body to achieve the positioning of the mounting structure and the mounting opening, and promote the relative movement of the main body and the mounting seat to achieve the matching and fixing of the mounting structure with the mounting opening. This greatly improves the visualization of the fixed structure during the assembly process, reduces the difficulty of assembly, improves assembly efficiency, reduces the time users spend looking up and lifting, and improves the operating experience.

[0020] 2. As a preferred embodiment of the present invention, the mounting structure is a hook, the hook includes a first extension section connected to the mounting seat and a second extension section bent relative to the first extension section and extending laterally, a slot is formed between the second extension section and the mounting seat, and the main body and the mounting seat can rotate relative to each other so that the edge of the mounting opening enters or moves out of the slot. After the main body is mounted on the mounting seat, the edge of the mounting opening is located in the slot, and the slot supports the edge of the mounting opening, thereby fixing the mounting portion. The second extension section extends laterally, and the slot formed between the second extension section and the mounting seat also extends laterally. The opening of the slot is located on one side of the slot in the horizontal direction rather than on the lower side of the slot. The second extension section directly bears the gravity of the main body, which can prevent the mounting portion from falling out of the slot under the gravity of the main body. The main body and the mounting seat can rotate relative to each other so that the edge of the mounting opening enters or moves out of the slot. Since the installation position of the smoke alarm device is generally high, when installing the main body, the user generally needs to perform high-altitude operations. When the user gives the main body a horizontal rotational force, the force can be applied only by rotating the wrist or arm. The force application method is more convenient and will not generate horizontal thrust on the user, thereby improving the stability of the user's high-altitude operations.

[0021] 3. As a preferred embodiment of the present utility model, there are multiple mounting openings and they are arranged at intervals along the circumference of the main body. The mounting openings extend along the circumferential direction of the main body, and the mounting structures are arranged in one-to-one correspondence with the mounting openings. The multiple mounting structures and the mounting openings are fixed in coordination, which improves the stability of the mounting seat fixing the main body and reduces the possibility of the main body accidentally falling off. The multiple mounting openings are arranged at intervals along the circumference of the main body, and the multiple mounting structures fix the multiple circumferential areas of the mounting portion, which improves the uniformity of the mounting seat fixing the main body and avoids the main body from tilting. In addition, the horizontal cross-sections of the main body and the mounting seat are generally circular, the mounting openings are arranged at intervals along the circumference of the main body, and the mounting openings extend along the circumferential direction of the main body, which makes it easier for the main body and the mounting seat to rotate relative to each other, and the arrangement of the mounting openings is more compatible with the appearance of the smoke alarm device, which improves the overall appearance of the smoke alarm device.

[0022] 4. As a preferred embodiment of the present utility model, a claw is provided at one end of the positioning portion away from the mounting seat, and a mounting space is formed between the claw and the mounting seat, and the mounting portion is located in the mounting space. When installing the main body, the mounting portion enters the mounting space from bottom to top, and the claw forms a limiting effect on the mounting portion from the lower side of the mounting space to prevent the mounting portion from escaping from the mounting space. After the user applies force to the main body from bottom to top to push the mounting portion to enter the mounting space from bottom to top, the upward force applied to the main body can be stopped. It is only necessary to apply a rotational force or a thrust in other directions to the main body to push the main body and the mounting seat to move relative to each other to complete the coordination and fixation of the mounting structure with the mounting port, thereby making the installation operation of the main body more labor-saving. In addition, after the main body is installed on the mounting seat, if the mounting port and the mounting structure become loose or damaged or broken, the mounting portion tends to fall off downward. At this time, the claw can also limit the mounting portion. Under the upward supporting force of the claw, the mounting portion or the main body will not fall off from the mounting seat, thereby preventing the main body from accidentally falling off or tilting, and providing operating time for repairing the smoke alarm device.

[0023] 5. As a preferred embodiment of the present invention, the main body has a contraction portion, the cross-sectional area of ​​the contraction portion gradually decreases in the direction away from the mounting portion, the contraction portion is provided with an anti-slip area, the anti-slip area extends along the circumference of the main body, and the anti-slip area is provided with anti-slip lines. The cross-sectional area of ​​the contraction portion gradually decreases in the direction away from the mounting portion, and the user can directly apply an upward push force to the contraction portion, which is convenient for pushing the main body upward, so that the mounting structure passes through the mounting port, making the installation operation of the main body more labor-saving. The contraction portion is provided with an anti-slip area, and the anti-slip area is provided with anti-slip lines. When the user grasps the anti-slip area, the anti-slip lines increase the friction coefficient of the anti-slip area, increase the friction between the palm and the anti-slip area, facilitate the user to grasp the anti-slip area, and prevent the main body from slipping from the user's hand. In addition, it is also convenient for the user to apply force to the anti-slip area to push the main body to move relative to the mounting seat, so as to achieve the matching fixation of the mounting structure and the mounting port. The anti-skid area extends along the circumference of the main body, so that the user can hold the anti-skid area from all sides, so that the anti-skid area is evenly stressed to push the main body to rotate relative to the mounting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0025] Figure 1 This is a structural schematic diagram of the smoke alarm device in one embodiment of the utility model;

[0026] Figure 2 A partial cross-sectional view of the smoke alarm device in one embodiment of the utility model;

[0027] Figure 3 for Figure 2 A magnified schematic diagram of the middle A area;

[0028] Figure 4 This is a schematic structural diagram of the main body in one implementation manner of the utility model;

[0029] Figure 5 This is a structural schematic diagram of the mounting base in one embodiment of the utility model;

[0030] Figure 6 It is a structural schematic diagram of the mounting base in another embodiment of the present invention.

[0031] in:

[0032] 1 main body; 11 mounting portion; 111 mounting opening; 12 contraction portion; 121 anti-slip area;

[0033] 2 mounting seat; 21 mounting structure; 211 first extension section; 212 second extension section; 2121 guiding inclined surface; 213 clamping groove; 214 fixing protrusion; 2141 transition arc surface; 22 fixing side; 23 matching side; 24 positioning part; 241 clamping claw; 242 guiding surface; 25 fixing through hole; 251 accommodating groove;

[0034] 3 Fasteners. DETAILED DESCRIPTION

[0035] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0036] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0037] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are 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.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "implementation method", "example", "one embodiment", "example" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0040] like Figures 1 to 3 As shown, a smoke alarm device includes a main body 1 and a mounting seat 2, wherein the main body 1 is provided with a mounting portion 11 protruding and extending outward on the peripheral side, the mounting portion 11 is provided with a mounting opening 111, and the mounting seat 2 is provided with a protruding mounting structure 21, and the main body 1 and the mounting seat 2 can move relative to each other so that the mounting structure 21 is matched and fixed with the mounting opening 111.

[0041] When installing the main body 1 on the mounting seat 2, firstly align the positions of the mounting opening 111 and the mounting structure 21, then move the main body 1 and the mounting seat 2 relatively close to each other so that the mounting structure 21 passes through the mounting opening 111, and finally move the main body 1 and the mounting seat 2 relative to each other so that the mounting structure 21 and the mounting opening 111 are matched and fixed, thereby achieving the fixation of the main body 1 and the mounting seat 2.

[0042] First, the mounting portion 11 protrudes outward from the outer side of the main body 1 so that the main body 1 does not block the mounting portion 11 . The user can clearly see the position of the mounting opening 111 on the mounting portion 11 , thereby facilitating positioning with the mounting structure on the mounting seat 2 .

[0043] Secondly, the installation portion 11 is provided with the installation opening 111, and the installation seat 2 is provided with the protruding installation structure 21. The installation structure 21 passes through the installation opening 111 from top to bottom to complete the matching. When installing the main body 1, the user looks up from the bottom of the smoke alarm device to operate. At this time, the installation opening 111 forms an escape opening for the user's line of sight. The user can observe the position of the installation structure 21 on the installation seat 2 and the matching state with the installation opening 111 through the installation opening 111, so as to facilitate the adjustment of the position of the main body 1 to realize the positioning of the installation structure 21 and the installation opening 111, and promote the relative movement of the main body 1 and the installation seat 2 to realize the matching and fixing of the installation structure 21 with the installation opening 111. In this way, the visualization of the fixed structure in the assembly process is greatly improved, the assembly difficulty is reduced, the assembly efficiency is improved, the time for users to look up and lift is reduced, and the operation experience is improved.

[0044] The present invention does not limit the relative movement form of the main body 1 and the mounting seat 2, and any one of the following embodiments may be adopted.

[0045] Embodiment 1: Figure 1 , Figures 4 to 6 As shown, there are multiple installation openings 111 and they are arranged at intervals along the circumference of the main body 1 . The installation openings 111 extend along the circumferential direction of the main body 1 . The installation structures 21 are arranged in a one-to-one correspondence with the installation openings 111 .

[0046] The plurality of mounting structures 21 and the mounting openings 111 are fixed together, which improves the stability of the mounting seat 2 fixing the main body 1 and reduces the possibility of the main body 1 falling off accidentally. The plurality of mounting openings 111 are arranged at intervals along the circumference of the main body 1, and the plurality of mounting structures 21 fix the mounting portion 11 in multiple circumferential areas, which improves the uniformity of the mounting seat 2 fixing the main body 1 and prevents the main body 1 from tilting. In addition, the horizontal cross-sections of the main body 1 and the mounting seat 2 are generally circular, and the mounting openings 111 are arranged at intervals along the circumference of the main body 1. The mounting openings 111 extend along the circumferential direction of the main body 1, which makes it easier for the main body 1 and the mounting seat 2 to rotate relative to each other. The arrangement of the mounting openings 111 is more compatible with the appearance of the smoke alarm device, which improves the overall appearance of the smoke alarm device.

[0047] The mounting structure 21 is a hook, which includes a first extension section 211 connected to the mounting seat 2 and a second extension section 212 that is bent relative to the first extension section 211 and extends laterally. The shape of the second extension section 212 is adapted to the mounting opening 111 and also extends along an arc line. The second extension section 212 can pass through the mounting opening 111, and the main body 1 and the mounting seat 2 rotate relative to each other so that the mounting structure 21 is matched and fixed with the mounting opening 111.

[0048] Embodiment 2: The mounting portion 11 is provided with a plurality of mounting openings 111, the mounting openings 111 extend in a straight line, the extension directions of the plurality of mounting openings 111 are parallel or overlapped, the mounting structure 21 is provided in a one-to-one correspondence with the mounting openings 111, and the second extension section 212 also extends in a straight line. The second extension section 212 can pass through the mounting opening 111, and the main body 1 and the mounting seat 2 slide relative to each other so that the mounting structure 21 is matched and fixed with the mounting opening 111.

[0049] As a preferred embodiment of the present invention, Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the mounting structure 21 is a hook, which includes a first extension section 211 connected to the mounting seat 2 and a second extension section 212 bent relative to the first extension section 211 and extending laterally, and a slot 213 is formed between the second extension section 212 and the mounting seat 2, and the main body 1 and the mounting seat 2 can rotate relative to each other so that the edge of the mounting opening 111 enters or moves out of the slot 213.

[0050] After the main body 1 is installed on the mounting seat 2, the edge of the mounting opening 111 is located in the slot 213, and the slot 213 supports the edge of the mounting opening 111, thereby fixing the mounting portion 11. The second extension section 212 extends in the lateral direction, and the slot 213 formed between the second extension section 212 and the mounting seat 2 also extends in the lateral direction. The opening of the slot 213 is located on one side of the slot 213 in the horizontal direction rather than on the lower side of the slot 213. The second extension section 212 directly bears the gravity of the main body 1, thereby preventing the mounting portion 11 from falling out of the slot 213 under the gravity of the main body 1. The main body 1 and the mounting seat 2 can rotate relative to each other so that the edge of the mounting opening 111 enters or moves out of the slot 213. Since the installation position of the smoke alarm device is generally high, when installing the main body 1, the user generally needs to perform high-altitude operations. When the user gives the main body 1 a horizontal rotation force, the force can be applied only by rotating the wrist or arm. The force application method is more convenient and will not generate horizontal thrust on the user, thereby improving the stability of the user's high-altitude operations.

[0051] Preferably, Figure 2 and Figure 3 As shown, the second extension section 212 is provided with a fixing protrusion 214 protruding toward the inside of the slot 213 at the opening of the slot 213, and the fixing protrusion 214 and the mounting seat 2 clamp and fix the mounting portion 11 from both sides. In order to facilitate the relative sliding of the edge of the mounting opening 111 in the slot 213, the size of the slot 213 is generally larger than the thickness of the edge. At the position of the fixing protrusion 214, the size of the slot 213 is reduced, and the fixing protrusion 214 and the mounting seat 2 clamp and fix the mounting portion 11 from both sides, thereby improving the limiting effect of the mounting portion 11 and improving the fixing stability of the mounting portion 11.

[0052] The fixing protrusion 214 is arranged at the opening of the slot 213 of the second extension section 212. One end of the second extension section 212 is fixed to the first extension section 211, and the other end is a free end. The fixing protrusion 214 is arranged at the free end. When the edge of the installation opening 111 slides into or out of the slot 213, the fixing protrusion 214 is squeezed by the edge. The second extension section 212 has elastic deformation ability, and the free end can deform and swing around the fixed end, so that the opening of the slot 213 expands, which facilitates the edge of the installation opening 111 to slide into or out of the slot 213. And the second extension section 212, under the action of the elastic restoring force, forms an extrusion effect on the edge of the installation opening 111 between the elastic protrusion and the mounting seat 2, thereby improving the fixing stability of the mounting portion 11.

[0053] Alternatively, the fixing protrusion 214 is engaged with the edge of the mounting opening 111. The extension length of the clamping slot 213 is greater than or equal to the net arc length between adjacent mounting openings 111. When the main body 1 is installed on the mounting seat 2, the edge of the mounting opening 111 is completely located in the clamping slot 213, and the fixing protrusion 214 corresponds to the position of the mounting opening 111. The fixing protrusion 214 can limit the edge of the mounting opening 111 from escaping from the clamping slot 213. The fixing protrusion 214 corresponds to the position of the mounting opening 111. After the edge of the mounting opening 111 slides into the clamping slot 213, the second extension section 212 recovers its elastic deformation, which can prevent the second extension section 212 from being in an elastic deformation state for a long time, resulting in a weakening of the elastic deformation recovery ability, and a weakening of the limiting ability of the mounting portion 11.

[0054] Preferably, Figure 2 and Figure 3 As shown, the surface of the fixing protrusion 214 is provided with a transition arc surface 2141. The provision of the transition arc surface 2141 enables the thrust of the fixing protrusion 214 from the edge to be partially converted into an extrusion force on the fixing protrusion 214 when the edge enters and exits the slot 213, thereby causing the fixing protrusion 214 and / or the second extension section 212 to be gradually deformed, facilitating the edge to slide in or out of the slot 213, avoiding structural interference between the edge and the fixing protrusion 214, and improving the convenience of installation and removal of the main body 1.

[0055] Preferably, Figure 1 , Figure 5 and Figure 6 As shown, a guide slope 2121 is provided on the side of the second extension section 212 away from the mounting seat 2 and / or the edge of the mounting opening 111 toward the side of the mounting seat 2. The guide slope 2121 guides the mounting structure 21 to slide into the mounting opening 111, thereby reducing the structural interference between the mounting structure 21 and the edge when the mounting structure 21 and the mounting opening 111 are not accurately positioned, thereby reducing the difficulty of positioning the main body 1 and reducing the user's high-altitude operation time.

[0056] As a preferred embodiment of the present invention, Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, the mounting seat 2 has a fixing side 22 for fixing to a wall surface, and a matching side 23 facing the main body 1. The peripheral side of the mounting seat 2 is provided with at least one positioning portion 24 protruding toward the matching side 23, and the positioning portion 24 is used to cooperate with the edge of the mounting portion 11 to position the main body 1. The positioning portion 24 surrounds the periphery of the mounting portion 11, and the positioning portion 24 forms a positioning for the position of the mounting portion 11 in the plane direction, guides the relative movement of the main body 1 and the mounting seat 2, and reduces the horizontal shaking of the main body 1 during the movement. In addition, the positioning portion 24 can reduce the deviation of the horizontal position between the mounting structure 21 and the mounting opening 111. When the mounting structure 21 and the mounting opening 111 are matched and positioned, it is only necessary to slide the mounting portion 11 relatively along the positioning portion 24, and there is no need to try to match in multiple directions, thereby improving the accuracy of positioning the mounting portion 11. The positioning portion 24 can guide the relative sliding between the main body 1 and the mounting seat 2 to achieve the matching and fixation between the mounting structure 21 and the mounting opening 111 , thereby reducing the position deviation of the positioning portion 24 during the relative sliding process.

[0057] Preferably, Figure 2 , Figure 5 and Figure 6 As shown, the mounting seat 2 is provided with at least one fixing through hole 25, and the smoke alarm device further includes a fastener 3, which is used to pass through the fixing through hole 25 to fix the mounting seat 2 to the wall, and the matching side 23 is recessed at the fixing through hole 25 to form a receiving groove 251. The fastener 3 passes through the fixing through hole 25 to fix the mounting seat 2 to the wall, which improves the stability of the fixing of the mounting seat 2 compared to the adhesive type smoke alarm device, and prevents the smoke alarm device from falling off. Preferably, the fastener 3 is a fixing screw. The matching side 23 is recessed at the fixing through hole 25 to form a receiving groove 251, and the fixing head of the fastener 3 is located in the receiving groove 251, and is fixedly abutted against the bottom wall of the receiving groove 251. The fixing head is located in the receiving groove 251, so that the fixing head is prevented from forming a protrusion on the matching side 23, thereby preventing the fixing head from forming a structural interference with the main body 1, or scratching and damaging the structure of the main body 1.

[0058] In this embodiment, the end of the positioning portion away from the mounting seat can be provided with any one of the structures in the following embodiments.

[0059] Embodiment 1: Figure 5As shown, a claw 241 is provided at one end of the positioning portion 24 away from the mounting seat 2, and an installation space is formed between the claw 241 and the mounting seat 2, and the mounting portion 11 is located in the installation space. When the main body 1 is installed, the edge of the mounting portion 11 squeezes the claw 241, and the claw 241 produces elastic deformation away from the installation space, so that the claw 241 and the mounting portion 11 can avoid each other, so that the mounting portion 11 can pass through the claw 241 and enter the installation space. When the mounting portion 11 enters the installation space, the claw 241 produces elastic deformation recovery, and the claw 241 forms a limiting effect on the mounting portion 11 from the lower side of the installation space to prevent the mounting portion 11 from falling out of the installation space. After the user applies force from bottom to top to the main body 1 and pushes the mounting portion 11 from bottom to top into the mounting space, the user can stop applying upward force to the main body 1. The user only needs to apply rotational force or thrust in other directions to the main body 1 to push the main body 1 and the mounting seat 2 to move relative to each other to complete the coordination and fixation of the mounting structure 21 with the mounting port 111, thereby making the installation operation of the main body 1 more labor-saving. In addition, after the main body 1 is installed on the mounting seat 2, if the mounting port 111 and the mounting structure 21 become loose or damaged or broken, the mounting portion 11 tends to fall off downward. At this time, the claw 241 can also limit the mounting portion 11. Under the upward supporting force of the claw 241, the mounting portion 11 or the main body 1 will not fall off from the mounting seat 2, thereby preventing the main body 1 from accidentally falling off or tilting, and providing time for repairing the smoke alarm device.

[0060] Embodiment 2: Figure 6 As shown, the positioning portion 24 encloses a positioning space, and a guide surface 242 facing the positioning space is provided at one end of the positioning portion 24 away from the mounting seat 2, and the guide surface 242 extends obliquely toward the outside of the positioning space in a direction away from the mounting seat 2. When the main body 1 and the positioning portion 24 are being positioned in coordination, the guide surface 242 can guide the main body 1 to slide from bottom to top in the positioning space along the positioning portion 24. The guide surface 242 extends obliquely toward the outside of the positioning space, thereby increasing the cross-sectional size of the positioning space, facilitating the guiding of the main body 1 to slide into the positioning space from bottom to top, and reducing the difficulty of the coordination and positioning between the main body 1 and the positioning portion 24.

[0061] Embodiment 3: Figure 5 As shown, this embodiment combines the above-mentioned embodiment 1 and embodiment 2, that is, the guide surface 242 is provided on the lower side of the claw 241. The guide surface 242 can guide the mounting portion 11 to pass through the claw 241 and slide into the mounting space, thereby reducing the structural interference between the claw 241 and the mounting portion 11.

[0062] As a preferred embodiment of the present invention, Figure 1 , Figure 2 and Figure 4 As shown, the main body 1 has a contraction portion 12, the cross-sectional area of ​​the contraction portion 12 gradually decreases in the direction away from the mounting portion 11, and the contraction portion 12 is provided with an anti-slip area 121, the anti-slip area 121 extends along the circumference of the main body 1, and the anti-slip area 121 is provided with anti-slip lines. The cross-sectional area of ​​the contraction portion 12 gradually decreases in the direction away from the mounting portion 11, and the user can directly apply an upward thrust to the contraction portion 12, which is convenient for pushing the main body 1 upward, so that the mounting structure 21 passes through the mounting opening 111, making the installation operation of the main body 1 more labor-saving. The contraction portion 12 is provided with an anti-slip area 121, and the anti-slip area 121 is provided with anti-slip lines. When the user grasps the anti-slip area 121, the anti-slip lines increase the friction coefficient of the anti-slip area 121, increase the friction between the palm and the anti-slip area 121, and facilitate the user to grasp the anti-slip area 121 to prevent the main body 1 from slipping from the user's hand. In addition, it is also convenient for the user to apply force to the anti-slip area 121 to push the main body 1 to move relative to the mounting seat 2, so as to achieve the matching and fixation of the mounting structure 21 and the mounting port 111. The anti-slip area 121 extends along the circumference of the main body 1, so that the user can grasp the anti-slip area 121 from all sides, so that the anti-slip area 121 is evenly stressed, so as to push the main body 1 to rotate relative to the mounting seat 2.

[0063] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0064] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0065] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A smoke alarm device, comprising a main body and a mounting seat, characterized in that: The circumferential side of the main body is provided with a mounting portion protruding and extending outward, the mounting portion is provided with a mounting opening, the mounting seat is provided with a protruding mounting structure, the mounting structure is a hook, the hook includes a first extension section connected to the mounting seat and a second extension section bent relative to the first extension section and extending laterally, a slot is formed between the second extension section and the mounting seat, the main body and the mounting seat can move relative to each other so that the mounting structure is matched and fixed with the mounting opening.

2. The smoke alarm device according to claim 1, characterized in that: The main body and the mounting seat can rotate relative to each other so that the edge of the mounting opening can enter or move out of the clamping slot.

3. The smoke alarm device according to claim 2, characterized in that: The second extension section is provided with a fixing protrusion protruding toward the inside of the slot at the opening of the slot, and the fixing protrusion and the mounting seat clamp and fix the mounting portion from both sides, or the fixing protrusion is clamped with the edge of the mounting opening.

4. The smoke alarm device according to claim 3, characterized in that: The surface of the fixing protrusion is provided with a transition cambered surface.

5. The smoke alarm device according to claim 2, characterized in that: A guiding slope is arranged on a side of the second extension section away from the mounting seat and / or an edge of the mounting opening facing the mounting seat.

6. The smoke alarm device according to claim 1, characterized in that: There are a plurality of mounting openings which are arranged at intervals along the circumference of the main body. The mounting openings extend along the circumferential direction of the main body. The mounting structures are arranged in one-to-one correspondence with the mounting openings.

7. The smoke alarm device according to claim 1, characterized in that: The mounting seat has a fixing side for fixing to a wall, and a mating side facing the main body, and the peripheral side of the mounting seat is provided with at least one positioning portion protruding toward the mating side, and the positioning portion is used to cooperate with the edge of the mounting portion to position the main body.

8. The smoke alarm device according to claim 7, characterized in that: The mounting seat is provided with at least one fixing through hole, and the smoke alarm device further comprises a fastener, which is used to pass through the fixing through hole to fix the mounting seat to the wall, and the matching side is recessed at the fixing through hole to form an accommodating groove.

9. The smoke alarm device according to claim 7, characterized in that: A clamping claw is disposed at one end of the positioning portion away from the mounting seat, an installation space is formed between the clamping claw and the mounting seat, and the mounting portion is located in the installation space.

10. The smoke alarm device according to claim 1, characterized in that: The main body has a contraction portion, the cross-sectional area of ​​which gradually decreases in a direction away from the mounting portion, the contraction portion is provided with an anti-slip area, the anti-slip area extends along the circumference of the main body, and the anti-slip area is provided with anti-slip lines.

Images