Battery neglected loading prevention structure, smoke alarm and switch control system

Abstract

The invention provides a battery neglected loading prevention structure, a smoke alarm and a switch control system. The neglected loading prevention structure comprises a bottom shell provided with a plurality of battery compartments; the first neglected loading prevention pieces are arranged in the battery bins and can protrude out of the surface of the bottom shell under the action of the first elastic elements; and the battery cover is provided with a first clearance hole, and when any first neglected mounting prevention piece protrudes, the battery cover is prevented from being rotationally mounted. The smoke alarm further comprises an installation support, a face shell and a second neglected installation prevention piece, and the second neglected installation prevention piece protrudes and extends into the installation support limiting groove when the battery cover is not installed so as to prevent the installation support and the face shell from being installed in a rotating mode. The bottom shell is provided with an on-off key, and when the installation support is installed successfully, the on-off key is pressed to trigger startup. The scheme has a double-power-on mode: automatic power-on is performed in response to pressing of a power-on handle or detecting that a power-on key is pressed for more than preset time; and when the on-off key loses pressing, unauthorized disassembly is judged and an alarm is given. According to the invention, correct installation and reliable operation of the smoke alarm are ensured through multiple protection.

Description

Technical Field

[0001] The present invention relates to the field of security products, and particularly to a battery anti-missing installation structure, a smoke alarm, and a switch control system. Background Art

[0002] The existing photoelectric smoke alarms are powered by independent batteries. During the initial installation of the device and the battery replacement during later maintenance, the following problems exist: First, installers may complete the device assembly by mistake without installing the battery, or miss installing the new battery when replacing the battery, resulting in the device being unable to enter the monitoring state due to power failure, forming a major fire safety loophole; Second, the traditional battery compartment design lacks a mandatory anti-mis-triggering mechanism, and there is still a risk of the device not being activated even after the battery is correctly installed; Third, commercially available products generally adopt an open battery compartment structure, which is prone to accidental battery detachment during disassembly and maintenance, and at the same time exposes reliability problems such as contact oxidation and dust intrusion caused by insufficient protection levels. Since smoke alarms are usually installed at high positions in public areas, the existing assembly structure is difficult to effectively prevent the device from being stolen or falling off due to external force impact, seriously weakening the continuous protection ability of the system. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a battery anti-missing installation structure, a smoke alarm, and a switch control system that can prevent the battery from being missed, prevent forgetting to turn on, prevent disassembly and theft, and can well protect the battery.

[0004] The technical solution adopted by the present invention to solve its technical problems is: A battery anti-missing installation structure includes: a bottom case, the bottom case is provided with at least two battery compartments, and the bottom case is provided with clamping holes; a first anti-missing installation member, one first anti-missing installation member is provided in each battery compartment, and the first anti-missing installation member is movably arranged in the corresponding battery compartment; a first elastic element, the first elastic element is used to push the first anti-missing installation member so that it protrudes from the surface of the bottom case when the battery is not installed; a battery cover, the battery cover is provided with a rotary clamping part, and the rotary clamping part can extend into the clamping holes, and the bottom case and the battery cover are clamped together by rotating the battery cover; the battery cover is provided with a first clearance hole, when any one of the first anti-missing installation members protrudes, the first anti-missing installation member abuts against the first clearance hole to prevent the battery cover from rotating, and only when batteries are installed in all battery compartments to press all the first anti-missing installation members, the battery cover can be smoothly rotated to complete the installation.

[0005] Furthermore, a slot is provided in the battery compartment of the bottom case, and the slot communicates with the battery compartment; the first anti-misloading member includes a first part and a second part, the first part is located in the battery compartment, and the second part protrudes from the surface of the bottom case under the action of the first elastic element; when the battery is placed in the battery compartment, the battery abuts against the first part and presses down the first anti-misloading member, causing the second part to retract into the bottom case, thereby allowing the battery cover to be normally installed.

[0006] Furthermore, the first part is an arm body extending horizontally; the second part is a columnar body arranged vertically; a connecting base, the connecting base is located at the connection of the first part and the second part, and an installation area for cooperating with the first elastic element is provided at the bottom of the connecting base; a guiding block, the guiding block is arranged on both sides of the connecting base; a guiding groove cooperating with the guiding block is provided in the bottom case, the guiding groove is arranged in a direction perpendicular to the bottom case, and the guiding block is accommodated in the guiding groove for guiding the first anti-misloading member to move in the vertical direction.

[0007] Furthermore, the connecting base is a hollow cylindrical structure with a top wall and a peripheral wall and an open bottom; the second part is fixedly connected to the top wall of the connecting base; an installation column is arranged inside the connecting base, the first elastic element is a spring, and the diameter of the installation column is slightly larger than the diameter of the spring; the spring is sleeved on the installation column and is located in the inner cavity of the connecting base; the top wall of the connecting base abuts against the bottom case, the second part passes through the bottom case and protrudes from the surface of the bottom case under the push of the spring, and the top wall of the connecting base is used to limit the upward movement distance of the first anti-misloading member.

[0008] Furthermore, the arm body extends outward from the connecting base, the side facing the battery is an arc-shaped contact surface, and its thickness gradually decreases from the connecting base to the outer end, forming a wedge-shaped cross-section. The extending length of the arm body exceeds 50% of the width of the battery compartment; wherein, the curvature of the arc-shaped contact surface matches the curvature of the bottom shell of the battery. When the battery is placed in the battery compartment, the bottom of the battery contacts the bottom of the arc-shaped contact surface, and the tangent at the contact point is a horizontal line, so that the pressure exerted by the battery is converted into a vertically downward force, and the transmission of the force is guided to the connecting base through the wedge-shaped cross-section.

[0009] Further, a power-on handle is provided on the bottom case, and a second clearance hole is provided on the battery cover corresponding to the position of the power-on handle; a positioning boss is provided on the bottom case along the connection line between the power-on handle and the center of the bottom case, and a third clearance hole is provided on the battery cover corresponding to the position of the positioning boss; wherein, the positioning boss cooperates with the third clearance hole to limit the rotational mounting position of the battery cover, align the power-on handle with the second clearance hole, and insert the positioning boss into the third clearance hole to guide the correct installation of the battery cover.

[0010] Further, a limiting convex point is provided on the battery cover, and a first limiting concave point and a second limiting concave point are provided on the bottom case corresponding to the position of the limiting convex point; a slope structure is formed on one side of the first limiting concave point close to the second limiting concave point; wherein, the limiting convex point, the first limiting concave point and the second limiting concave point cooperate to achieve the segmented positioning and rotational mounting of the battery cover and the bottom case. When the battery cover is initially closed on the bottom case, the limiting convex point is located in the first limiting concave point to form an initial positioning. When the battery cover is rotated, the limiting convex point slides upward along the slope and makes a circular motion to the second limiting concave point to form a final locking fit, completing the installation of the battery cover.

[0011] A smoke alarm, the above battery anti-misinstallation structure further includes: a mounting bracket and a front case, the mounting bracket and the front case are mounted in a rotational manner; the bottom case is disposed in the space formed by the mounting bracket and the front case; a second anti-misinstallation member, the second anti-misinstallation member is disposed on the bottom case; a second elastic element, the second elastic element is connected to the second anti-misinstallation member and is used to push the second anti-misinstallation member to protrude from the surface of the bottom case; wherein, the projection of the second anti-misinstallation member and the battery cover on the bottom case partially overlaps. When the battery cover is mounted on the bottom case, the battery cover presses the second anti-misinstallation member; a plurality of limiting grooves are provided on the mounting bracket, and the limiting grooves cooperate with the second anti-misinstallation member. When the battery cover is not mounted, the second anti-misinstallation member protrudes from the bottom case and extends into the limiting grooves to prevent the rotational mounting of the mounting bracket and the front case; when the battery cover is mounted and presses the second anti-misinstallation member, the mounting bracket and the front case can complete the rotational mounting.

[0012] Further, a power-on key is provided on the bottom case, and the power-on key is located at the contact position between the bottom case and the mounting bracket; wherein, after the mounting bracket is successfully mounted on the front case, the mounting bracket presses the power-on key, and the power-on key is pressed to trigger the power-on of the smoke alarm.

[0013] A smoke alarm switch control system includes the above-mentioned smoke alarm; it further includes a control circuit, and the control circuit is electrically connected to the power-on handle and the power-on key respectively; the control circuit is used to execute a dual power-on mode and an anti-theft alarm function; wherein, the dual power-on mode includes: a first power-on mode, the control circuit generates a power-on signal in response to the pressing operation of the power-on handle, so that the smoke alarm enters the working state; a second power-on mode, after the control circuit detects that the power-on key is pressed by the mounting bracket and lasts for more than a preset time threshold, it automatically generates a power-on signal to make the smoke alarm enter the working state; the anti-theft alarm function includes: when the control circuit detects that the power-on key loses pressure when the smoke alarm is in the working state, it determines that it is an unauthorized disassembly, generates an alarm signal and makes the monitoring function of the smoke alarm invalid.

[0014] The beneficial effects of the present invention are: The present invention effectively solves the problems such as easy battery omission, device not powered on, and unauthorized disassembly that often occur in the use of existing smoke alarms. Through the interlocking design of the first anti-omission part and the battery cover, it is ensured that all batteries must be correctly installed to complete the installation of the battery cover; the cooperation of the second anti-omission part and the mounting bracket ensures that the battery cover must be installed in place to complete the installation of the whole machine; and the dual power-on mode and the anti-theft alarm function further guarantee the reliable operation and safety of the device. It can be powered on manually, and can also be automatically powered on after correct installation. At the same time, it can also alarm in time when unauthorized disassembly is detected. This progressive safety guarantee mechanism significantly improves the reliability, safety and convenience of the smoke alarm, providing a more reliable fire protection solution for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the drawings and embodiments.

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a disassembled schematic diagram of the present invention; Figure 3 is a partial structural schematic diagram of the bottom shell of the present invention - 1; Figure 4 is a disassembled partial structural schematic diagram of the bottom shell of the present invention; Figure 5 is a partial structural schematic diagram of the bottom shell of the present invention - 2; Figure 6 is Figure 5 an enlarged view of part A in Figure 7 is a partial structural schematic diagram of the bottom shell of the present invention - 3; Figure 8Schematic perspective view of the first leak-proof component of the present invention; Figure 9 Schematic cross-sectional view of the first leak-proof component of the present invention; Figure 10 Schematic view of the battery cover of the present invention - 1; Figure 11 Schematic view of the battery cover of the present invention - 2; Figure 12 Schematic view of the mounting bracket of the present invention - 1; Figure 13 Schematic view of the mounting bracket of the present invention - 2; Wherein, 100, bottom shell; 101, battery compartment; 102, slot; 103, clamping hole; 104, guide groove; 105, power-on handle; 106, positioning boss; 107, first limit concave point; 108, second limit concave point; 109, power-on key; 110, first leak-proof component; 1101, first part; 11011, arc contact surface; 111, second part; 112, connection base; 1121, mounting post; 1122, top wall; 1123, peripheral wall; 1124, guide block; 113, second leak-proof component; 114, first elastic element; 115, second elastic element; 200, battery cover; 201, clamping part; 202, first clearance hole; 203, second clearance hole; 204, third clearance hole; 205, limit convex point; 300, mounting bracket; 301, limit groove; 400, front shell. Detailed implementation manners

[0017] The following will clearly and completely describe the concept, specific structure and technical effects generated by the present invention in combination with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention. In addition, all the connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the more optimal connection structure that can be formed by adding or reducing connection accessories according to the specific implementation situation. Each technical feature in the present invention can be combined interactively without conflicting with each other.

[0018] The present invention provides a battery leak-proof installation structure, a smoke alarm and a switch control system, which ensure the normal operation of the smoke alarm through multiple protection mechanisms. The following will explain in detail the technical solutions of the present invention and their implementation manners.

[0019] Reference Figure 1-7 The core of the present invention is to design a set of progressive safety guarantee mechanisms, forming a complete safety chain from battery installation, battery cover 200 locking to whole machine installation and power-on control. First, through the interlocking of the first anti-leakage assembly 110 and the battery cover 200, it is ensured that all battery compartments 101 must be loaded with batteries to complete the installation of the battery cover 200; secondly, through the cooperation of the second anti-leakage assembly 113 and the mounting bracket 300, it is ensured that the battery cover 200 must be correctly installed to complete the installation of the whole machine; finally, through the linkage of the switch key 109 and the control circuit, the automatic power-on and anti-disassembly functions are realized.

[0020] Specifically, refer to Figure 2-4 At least two battery compartments 101 are provided on the bottom shell 100, and a first anti-leakage component 110 is provided in each battery compartment 101. The anti-leakage component can move in the vertical direction under the action of the first elastic element 114. When no battery is loaded into the battery compartment 101, the first elastic element 114 will push the first anti-leakage component 110 to protrude from the surface of the bottom shell 100. The battery cover 200 is provided with a clamping portion 201 and a first avoidance hole 202. When the user tries to install the battery cover 200, if no battery is loaded into any battery compartment 101, the corresponding first anti-leakage component 110 will conflict with the first avoidance hole 202, preventing the battery cover 200 from rotating, thereby preventing the battery cover 200 from being installed without a battery. Only when all the battery compartments 101 are loaded with batteries and all the first anti-leakage parts 110 are pressed, can the clamping part 201 of the battery cover 200 be inserted into the clamping hole 103 of the bottom shell 100, and the battery cover 200 can be smoothly rotated to complete the installation. For example, when the user replaces the battery of the smoke alarm, if only one battery is inserted and the other is forgotten, when trying to install the battery cover 200, the battery cover 200 cannot be completely rotated and locked, reminding the user to check whether all batteries have been correctly installed.

[0021] Further, refer to Figure 5 , 7 The present invention also provides a second anti-leakage member 113 on the bottom shell 100. Different from the first anti-leakage member 110, the second anti-leakage member 113 is mainly used to ensure the correct installation of the battery cover 200. The second anti-leakage member 113 protrudes from the surface of the bottom shell 100 under the action of the second elastic element 115, and its position coincides with the projection of the battery cover 200 on the bottom shell 100. When the battery cover 200 is correctly installed, the second anti-leakage member 113 will be pressed to retract. Figure 12 , 13, the mounting bracket 300 is provided with a plurality of limiting grooves 301. When the battery cover 200 is not installed, the second anti-misinstallation member 113 will extend into the limiting groove 301 to prevent the rotational installation of the mounting bracket 300 and the front shell 400. Only when the battery cover 200 is correctly installed and presses the second anti-misinstallation member 113, can the mounting bracket 300 complete the rotational installation with the front shell 400. For example, when installing a smoke alarm, if the user forgets to install the battery cover 200 or the battery cover 200 is not correctly locked, when trying to install the smoke alarm on the mounting bracket 300, it will be found that the rotational locking cannot be completed, reminding the user to correctly install the battery cover 200 first. The first elastic element 114 and the second elastic element 115 are both preferably springs.

[0022] To further improve safety, referring to Figure 3 , 4 , the present invention further provides a power-on key 109 on the bottom shell 100, located at the contact position between the bottom shell 100 and the mounting bracket 300. After the mounting bracket 300 is successfully installed on the front shell 400, the mounting bracket 300 will press the power-on key 109 to trigger the power-on of the smoke alarm. Ensure that the smoke alarm can automatically power on after correct installation. At the same time, the control circuit is electrically connected to the power-on handle 105 and the power-on key 109, realizing a dual power-on mode. The first power-on mode is to manually trigger the control circuit to generate a power-on signal by pressing the power-on handle 105; the second power-on mode is that when the power-on key 109 is pressed by the mounting bracket 300 and lasts for more than a preset time threshold, the control circuit automatically generates a power-on signal. For example, when the user correctly installs the smoke alarm on the mounting bracket 300 on the ceiling, even if the user forgets to press the power-on handle 105, the smoke alarm will automatically power on and enter the working state after a few seconds, avoiding the lack of protection caused by forgetting to manually power on.

[0023] In addition, the present invention also has an anti-theft alarm function. When the smoke alarm is in the working state, if the power-on key 109 loses the pressure (i.e., the mounting bracket 300 is removed), the control circuit will determine it as unauthorized disassembly and immediately generate an alarm signal and disable the monitoring function of the smoke alarm. Thus, it can effectively prevent the theft or unauthorized disassembly of the smoke alarm. For example, if someone tries to steal the installed smoke alarm at night, once it is removed from the mounting bracket 300, the alarm will immediately emit a high-decibel alarm, which can not only scare away the thief but also remind the homeowner that someone is stealing the safety device.

[0024] In some embodiments, referring to Figure 4 , a slot 102 is provided in the battery compartment 101 of the bottom shell 100, and the slot 102 communicates with the battery compartment 101; referring to Figure 8 , 9The first anti-leakage fitting 110 includes a first part 1101 and a second part 111, the first part 1101 is located in the battery compartment 101, and the second part 111 protrudes from the surface of the bottom shell 100 under the action of the first elastic element 114; when the battery is placed in the battery compartment 101, the battery abuts against the first part 1101 and presses down the first anti-leakage fitting 110, so that the second part 111 is retracted into the bottom shell 100, thereby allowing the battery cover 200 to be installed normally.

[0025] Specifically, a slot 102 is provided in the battery compartment 101 of the bottom shell 100, and the slot 102 is interconnected with the battery compartment 101, providing a channel for the movement of the first anti-leakage component 110. The first anti-leakage component 110 includes a first portion 1101 located in the battery compartment 101 and a second portion 111 that can protrude from the surface of the bottom shell 100. When the battery is not installed, the first elastic element 114 will push the entire first anti-leakage component 110 so that the second portion 111 protrudes from the surface of the bottom shell 100. When the user puts the battery into the battery compartment 101, the battery will contact the first portion 1101 of the first anti-leakage component 110 and generate downward pressure, so that the entire first anti-leakage component 110 overcomes the elastic force of the first elastic element 114 and moves downward, so that the second portion 111 is retracted into the inside of the bottom shell 100 and no longer protrudes from the surface of the bottom shell 100. At this time, since there is no protrusion blocking, the battery cover 200 can be installed normally and rotated and locked. When the user needs to replace the battery, if the user forgets to put in the new battery after taking out the old battery, when trying to install the battery cover 200, because the first part 1101 of the first anti-leakage component 110 is not pressed by the battery, the second part 111 will remain in a protruding state under the action of the first elastic element 114, and the second part 111 will conflict with the first avoidance hole 202 on the battery cover 200, preventing the user from completing the rotation installation of the battery cover 200. The user will clearly feel that the battery cover 200 cannot be smoothly rotated into place, reminding the user to check whether the battery has been correctly installed.

[0026] Further, continue to refer to Figure 5 , 6, 8, 9, the first part 1101 of the first anti-leakage component 110 is an arm body extending horizontally; the second part 111 is a columnar body arranged vertically; a connecting base 112, the connecting base 112 is located at the connection of the first part 1101 and the second part 111, and an installation area for cooperating with the first elastic element 114 is provided at the bottom of the connecting base 112; a guiding block 1124, the guiding block 1124 is arranged on both sides of the connecting base 112; a guiding groove 104 for cooperating with the guiding block 1124 is provided in the bottom shell 100, the guiding groove 104 is arranged in a direction perpendicular to the bottom shell 100, and the guiding block 1124 is accommodated in the guiding groove 104 for guiding the first anti-leakage component 110 to move in the vertical direction.

[0027] The first part 1101 of the first anti-leakage component 110 is an arm body extending horizontally, enabling it to cover a large area in the battery compartment 101 to ensure that the arm body can effectively contact the battery regardless of the specific position of the battery in the battery compartment 101. The second part 111 is a columnar body arranged vertically, which can protrude through the surface of the bottom shell 100 under the action of the first elastic element 114 to form a physical barrier. The connecting base 112 is located at the connection of the first part 1101 and the second part 111, connecting the horizontal arm body and the vertical columnar body, and also providing an installation area at its bottom for installing the first elastic element 114.

[0028] To ensure that the first anti-leakage component 110 can move smoothly in the vertical direction, referring to Figure 8 , guiding blocks 1124 are arranged on both sides of the connecting base 112, and corresponding guiding grooves 104 are arranged in the bottom shell 100 at the corresponding positions. The guiding grooves 104 are arranged in a direction perpendicular to the bottom shell 100. Referring to Figure 6 , the guiding blocks 1124 are exactly accommodated in the guiding grooves 104. This can effectively prevent the first anti-leakage component 110 from deflecting or getting stuck during the movement, ensuring that it always moves along the predetermined vertical path, and improving the reliability and durability of the entire anti-leakage mechanism.

[0029] In an actual application scenario, for example, when a user needs to replace the battery of the smoke alarm, the battery cover 200 needs to be removed first. At this time, the first anti-leakage component 110 located in the battery compartment 101 can be seen. Its horizontally extending arm body is at the bottom of the battery compartment 101, and the vertical columnar body protrudes from the surface of the bottom shell 100. When the user puts a new battery into the battery compartment 101, the battery will press on the arm body, causing the entire first anti-leakage component 110 to move downward. The guiding blocks 1124 ensure the smooth descent of the device under the guidance of the guiding grooves 104. At this time, the vertical columnar body will retract into the interior of the bottom shell 100 and no longer protrude, and the user can then install the battery cover 200 smoothly.

[0030] Furthermore, continuing to refer to Figure 8 ,9 The connecting base 112 is a hollow cylindrical structure with a top wall 1122 and a peripheral wall 1123, and is open at the bottom; the second part 111 is fixedly connected to the top wall 1122 of the connecting base 112; an installation post 1121 is arranged inside the connecting base 112, the first elastic element 114 is a spring, and the diameter of the installation post 1121 is slightly larger than the diameter of the spring; the spring is sleeved on the installation post 1121 and is located in the inner cavity of the connecting base 112; the top wall 1122 of the connecting base 112 abuts against the bottom shell 100, and the second part 111 protrudes through the bottom shell 100 and protrudes from the surface of the bottom shell 100 under the push of the spring, and the top wall 1122 of the connecting base 112 is used to limit the upward movement distance of the first leak-proof member 110.

[0031] The second part 111 (vertical column) is fixedly connected to the top wall 1122 of the connecting base 112 to form an integral structure, ensuring that it will not loosen or fall off during operation. An installation post 1121 is arranged inside the connecting base 112, and the diameter of the installation post 1121 is slightly larger than the diameter of the first elastic element 114 (spring), so that the spring can be stably sleeved on the installation post 1121 and will not have lateral displacement or detachment during operation. The spring is sleeved on the installation post 1121 and is located in the inner cavity of the connecting base 112, so that the spring always remains vertical during the compression and relaxation processes, avoiding tilting or jamming phenomena, and improving the smoothness and reliability of the movement.

[0032] When the system is in a static state (without battery pressing), the top wall 1122 of the connecting base 112 abuts against the bottom shell 100. At this time, the second part 111 protrudes through the bottom shell 100 and protrudes from the surface of the bottom shell 100 under the push of the spring. The abutment between the top wall 1122 of the connecting base 112 and the bottom shell 100 limits the upward movement distance of the first leak-proof member 110, preventing it from protruding excessively and causing damage or affecting the normal use of the battery cover 200.

[0033] The cooperation between the hollow cylindrical structure and the spring has significant advantages in assembly and maintenance. During the production process, workers can first sleeve the spring on the installation post 1121, and then install the entire first leak-proof member 110 at the corresponding position of the bottom shell 100. The whole process is simple and intuitive. If maintenance or spring replacement is required later, only the first leak-proof member 110 needs to be removed, and the spring can be easily replaced through the opening at the bottom of the connecting base 112 without disassembling the entire device, greatly improving the maintenance efficiency.

[0034] Further, referring to Figure 8 、 9, the arm body extends outward from the connection base 112, and its side facing the battery is an arc-shaped contact surface 11011. Moreover, its thickness gradually decreases from the connection base 112 to the outer end, forming a wedge-shaped cross-section. The extension length of the arm body exceeds 50% of the width of the battery compartment 101. Among them, the curvature of the arc-shaped contact surface 11011 matches the curvature of the bottom shell of the battery. When the battery is placed in the battery compartment 101, the bottom of the battery contacts the bottom of the arc-shaped contact surface 11011, and the tangent at the contact point is a horizontal line, so that the pressure exerted by the battery is converted into a vertically downward force, and the force is transmitted to the connection base 112 through the wedge-shaped cross-section.

[0035] The extension length of the arm body exceeds 50% of the width of the battery compartment 101, ensuring that the arm body can maintain effective contact with the battery regardless of the specific position of the battery in the battery compartment 101. The longer arm body also provides a greater contact opportunity, and even if the placement position of the battery is slightly offset, it can ensure the normal operation of the detection function.

[0036] The curvature of the arc-shaped contact surface 11011 matches the curvature of the bottom shell of the battery. When the battery is placed in the battery compartment 101, the bottom of the battery just contacts the bottom of the arc-shaped contact surface 11011. At this time, the tangent at the contact point is a horizontal line, so that the pressure pressing the battery is converted into a vertically downward pressure, ensuring the maximum compression of the spring.

[0037] Through the structure of the wedge-shaped cross-section, the vertical pressure exerted by the battery is transmitted to the connection base 112 along the direction of the gradual change of the thickness of the arm body. At this time, the force transmission path avoids the possible bending deformation of the arm body, improving the rigidity and stability of the entire mechanism. The wedge-shaped cross-section also has the characteristic of self-guidance. When the battery exerts pressure, the wedge-shaped structure naturally guides the first anti-misloading part 110 to move downward in the vertical direction, further ensuring the smoothness and accuracy of the movement.

[0038] In some embodiments, referring to Figure 3 , 4 、10, a power-on handle 105 is provided on the bottom shell 100, and a second clearance hole 203 is provided on the battery cover 200 at a position corresponding to the power-on handle 105; a positioning stud 106 is provided on the bottom shell 100 along the connection line between the power-on handle 105 and the center of the bottom shell 100, and a third clearance hole 204 is provided on the battery cover 200 at a position corresponding to the positioning stud 106; among them, the positioning stud 106 cooperates with the third clearance hole 204 to limit the rotational installation position of the battery cover 200, align the power-on handle 105 with the second clearance hole 203, and the positioning stud 106 is inserted into the third clearance hole 204 to guide the correct installation of the battery cover 200.

[0039] To ensure the accurate positioning of the battery cover 200 during installation, a positioning boss 106 is provided on the bottom case 100 along the connection line between the power-on handle 105 and the center of the bottom case 100, ensuring that when the battery cover 200 is correctly installed, the second clearance hole 203 can be aligned with the power-on handle 105. Correspondingly, a third clearance hole 204 is provided on the battery cover 200 at the position corresponding to the positioning boss 106 for receiving the positioning boss 106. When the user installs the battery cover 200, the third clearance hole 204 of the battery cover 200 needs to be aligned with the positioning boss 106 on the bottom case 100 before the battery cover 200 can be fully placed in position.

[0040] Specifically, the second clearance hole 203 is arc-shaped, and its arc length corresponds to the rotation angle required for the battery cover 200 to move from the initial installation position to the final locked position. When the battery cover 200 is in the initial installation position, the power-on handle 105 is located at the starting end of the arc of the second clearance hole 203; as the battery cover 200 rotates, the power-on handle 105 moves relatively along the arc track within the second clearance hole 203 until the battery cover 200 rotates to the final locked position, and the power-on handle 105 is located at the terminating end of the arc of the second clearance hole 203. Throughout the process, the arc-shaped structure of the second clearance hole 203 ensures that the power-on handle 105 is always exposed and not blocked or restricted by the battery cover 200, ensuring that the user can conveniently operate the power-on handle 105 regardless of the rotational position of the battery cover 200.

[0041] Similarly, the third clearance hole 204 is also arc-shaped, and its radian is consistent with that of the second clearance hole 203, ensuring that during the rotation of the battery cover 200, the positioning boss 106 can move smoothly within the third clearance hole 204. When the battery cover 200 is in the initial installation position, the positioning boss 106 is located at the starting end of the arc of the third clearance hole 204; as the battery cover 200 rotates, the positioning boss 106 moves relatively along the arc track within the third clearance hole 204, guiding the battery cover 200 to rotate along a predetermined path and restricting the rotation range of the battery cover 200 to prevent damage caused by excessive rotation. When the battery cover 200 rotates to the final locked position, the positioning boss 106 is located at the terminating end of the arc of the third clearance hole 204, forming a physical limit to prevent the battery cover 200 from continuing to rotate.

[0042] In some embodiments, referring to Figure 3 、 4, 11. A limiting protrusion 205 is provided on the battery cover 200, and a first limiting concave point 107 and a second limiting concave point 108 are provided on the bottom shell 100 at a position corresponding to the limiting protrusion 205; a slope structure is formed on the side of the first limiting concave point 107 close to the second limiting concave point 108; wherein the limiting protrusion 205, the first limiting concave point 107 and the second limiting concave point 108 cooperate to realize the segmented positioning and rotation installation of the battery cover 200 and the bottom shell 100. When the battery cover 200 is initially covered on the bottom shell 100, the limiting protrusion 205 is located in the first limiting concave point 107 to form an initial positioning. When the battery cover 200 is rotated, the limiting protrusion 205 slides upward along the slope and moves in a circle to the second limiting concave point 108, forming a final locking fit to complete the installation of the battery cover 200.

[0043] When the user initially covers the battery cover 200 on the bottom shell 100, the limiting protrusion 205 on the battery cover 200 will naturally fall into the first limiting concave point 107 on the bottom shell 100 to form an initial positioning. The initial positioning has a slight snapping feeling, and the user can clearly feel that the battery cover 200 has been initially positioned, but has not yet been completely locked. At this time, the cooperation between the limiting protrusion 205 and the first limiting concave point 107 provides sufficient friction to prevent the battery cover 200 from accidentally falling off, but will not hinder the subsequent rotation and locking operation.

[0044] When the user starts to rotate the battery cover 200, the limiting protrusion 205 first slides upward along the slope structure on the side of the first limiting concave point 107 close to the second limiting concave point 108. The slope structure enables the limiting protrusion 205 to smoothly escape from the first limiting concave point 107, avoiding sudden jumping or jamming during the rotation process. As the battery cover 200 continues to rotate, the limiting protrusion 205 moves in a circular motion along a predetermined trajectory until it reaches the position of the second limiting concave point 108. When the limiting protrusion 205 falls into the second limiting concave point 108, the user will feel an obvious "click", which indicates that the battery cover 200 has completed the final locking fit and the installation process is successfully completed.

[0045] In actual application scenarios, for example, when a user needs to replace the battery for a smoke alarm, the user first needs to rotate the battery cover 200 in the reverse direction to unlock it. At this time, the limiting protrusion 205 needs to be disengaged from the second limiting concave point 108. Since the second limiting concave point 108 is more tightly matched, the user needs to apply a certain torque to overcome the locking force, thereby preventing the battery cover 200 from being accidentally loosened. Once the limiting protrusion 205 is disengaged from the second limiting concave point 108, the user continues to rotate in the reverse direction until the limiting protrusion 205 returns to the position of the first limiting concave point 107. At this time, the battery cover 200 is in the initial positioning state, and the user can easily remove the battery cover 200 to replace the battery.

[0046] After completing the battery replacement, the user places the battery cover 200 back onto the bottom case 100. At this time, it is necessary to ensure that the limiting bump 205 aligns with the first limiting concave point 107, and at the same time, the aforementioned third clearance hole 204 also needs to align with the positioning stud 106. When the battery cover 200 is initially in place and the limiting bump 205 falls into the first limiting concave point 107 to form an initial positioning, the user starts to rotate the battery cover 200 clockwise. During the rotation process, the limiting bump 205 first slides upward along the slope and leaves the first limiting concave point 107, and then moves along a circular trajectory. At the same time, the positioning stud 106 moves along an arc trajectory within the third clearance hole 204, and the power-on lever 105 also moves relatively within the second clearance hole 203. Finally, the limiting bump 205 falls into the second limiting concave point 108 to form a firm lock, and at the same time, the positioning stud 106 also reaches the end point of the third clearance hole 204, completing the entire installation process of the battery cover 200.

[0047] The above is a specific description of the preferred embodiment of the present invention. However, the present invention is not limited to the described embodiment. Those skilled in the art can make various equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A battery anti-misloading structure, characterized in that a bottom case, the bottom case is provided with at least two battery compartments, and the bottom case is provided with clamping holes; a first anti-misloading member, one first anti-misloading member is arranged in each battery compartment, and the first anti-misloading member is movably arranged in the corresponding battery compartment; a first elastic element, the first elastic element is used to push the first anti-misloading member so that it protrudes from the surface of the bottom case when no battery is installed; a battery cover, the battery cover is provided with a rotary clamping portion, and the rotary clamping portion can extend into the clamping hole, and the bottom case and the battery cover are clamped together by rotating the battery cover; the battery cover is provided with a first clearance hole, when any one of the first anti-misloading members protrudes, the first anti-misloading member abuts against the first clearance hole to prevent the battery cover from rotating, and only when batteries are installed in all battery compartments to press all the first anti-misloading members, the battery cover can be smoothly rotated to complete the installation.

2. The battery anti-misloading structure according to claim 1, characterized in that a slot is arranged in the battery compartment of the bottom case, and the slot communicates with the battery compartment; the first anti-misloading member includes a first part and a second part, the first part is located in the battery compartment, and the second part protrudes from the surface of the bottom case under the action of the first elastic element; after the battery is placed in the battery compartment, the battery abuts against the first part and presses down the first anti-misloading member, so that the second part retracts into the bottom case, thereby allowing the normal installation of the battery cover.

3. The battery anti-misloading structure according to claim 2, characterized in that the first part is an arm body extending horizontally; the second part is a columnar body arranged vertically; a connecting base, the connecting base is located at the connection of the first part and the second part, and the bottom of the connecting base is provided with an installation area for cooperating with the first elastic element; guide blocks, the guide blocks are arranged on both sides of the connecting base; guide grooves are arranged in the bottom case and cooperate with the guide blocks, the guide grooves are arranged along the direction perpendicular to the bottom case, and the guide blocks are accommodated in the guide grooves for guiding the first anti-misloading member to move vertically.

4. The battery anti-misloading structure according to claim 3, characterized in that the connecting base is a hollow cylindrical structure, having a top wall and a peripheral wall, and an opening at the bottom; the second part is fixedly connected to the top wall of the connecting base; an installation column is arranged inside the connecting base, the first elastic element is a spring, and the diameter of the installation column is slightly larger than the diameter of the spring; the spring is sleeved on the installation column and is located in the inner cavity of the connecting base; the top wall of the connecting base abuts against the bottom case, the second part passes through the bottom case and protrudes from the surface of the bottom case under the push of the spring, and the top wall of the connecting base is used to limit the upward movement distance of the first anti-misloading member.

5. The battery anti-misloading structure according to claim 3, characterized in that The arm body extends outward from the connection base, and the side facing the battery is an arc-shaped contact surface. Moreover, its thickness gradually decreases from the connection base to the outer end, forming a wedge-shaped cross-section. The extension length of the arm body exceeds 50% of the width of the battery compartment; Wherein, the curvature of the arc-shaped contact surface matches the curvature of the bottom shell of the battery. When the battery is placed in the battery compartment, the bottom of the battery contacts the bottom of the arc-shaped contact surface, and the tangent at the contact point is a horizontal line, so that the pressure exerted by the battery is converted into a vertically downward force, and the transmission of the force is guided to the connection base through the wedge-shaped cross-section.

6. The battery anti-misloading structure according to claim 1, wherein A power-on handle is provided on the bottom shell, and a second clearance hole is provided on the battery cover corresponding to the position of the power-on handle; A positioning convex column is provided on the bottom shell along the connection line between the power-on handle and the center of the bottom shell, and a third clearance hole is provided on the battery cover corresponding to the position of the positioning convex column; Wherein, the positioning convex column and the third clearance hole cooperate to limit the rotational installation position of the battery cover, align the power-on handle with the second clearance hole, and the positioning convex column is inserted into the third clearance hole to guide the correct installation of the battery cover.

7. The battery anti-misloading structure according to claim 1, wherein Limit convex points are provided on the battery cover, and a first limit concave point and a second limit concave point are provided on the bottom shell corresponding to the positions of the limit convex points; A slope structure is formed on one side of the first limit concave point close to the second limit concave point; Wherein, the limit convex points, the first limit concave point and the second limit concave point cooperate to achieve segmented positioning and rotational installation of the battery cover and the bottom shell. When the battery cover is initially closed on the bottom shell, the limit convex points are located in the first limit concave point to form an initial positioning. When the battery cover is rotated, the limit convex points slide upward along the slope and make a circular motion to the second limit concave point to form a final locking fit, completing the installation of the battery cover.

8. A smoke alarm, comprising a battery anti-misloading structure as described in any one of claims 1-7, characterized in that, It further includes: An installation bracket and a front shell, and the installation bracket and the front shell are installed in a rotating manner; The bottom shell is arranged in the space formed by the installation bracket and the front shell; A second anti-misloading member, and the second anti-misloading member is arranged on the bottom shell; A second elastic element, and the second elastic element is connected to the second anti-misloading member for pushing the second anti-misloading member to protrude from the surface of the bottom shell; Wherein, the projection of the second anti-misloading member and the battery cover on the bottom shell partially overlaps. When the battery cover is installed on the bottom shell, the battery cover presses the second anti-misloading member; A plurality of limit grooves are provided on the installation bracket, and the limit grooves cooperate with the second anti-misloading member. When the battery cover is not installed, the second anti-misloading member protrudes from the bottom shell and extends into the limit grooves to prevent the rotational installation of the installation bracket and the front shell; When the battery cover is installed and presses the second anti-misloading member, the installation bracket and the front shell can complete the rotational installation.

9. The smoke alarm according to claim 8, wherein A power button is provided on the bottom case, and the power button is located at the contact position between the bottom case and the mounting bracket; Wherein, after the mounting bracket is successfully installed on the front case, the mounting bracket presses the power button, and the power button is pressed to trigger the smoke alarm to turn on.

10. A smoke alarm switch control system, comprising the smoke alarm as described in claim 9; characterized in that, It further includes: A power-on handle, which is provided on the bottom case; A control circuit, which is electrically connected to the power-on handle and the power button respectively; The control circuit is used to execute a dual power-on mode and an anti-theft alarm function; Wherein, the dual power-on mode includes: A first power-on mode, in which the control circuit generates a power-on signal in response to the pressing operation of the power-on handle, so that the smoke alarm enters the working state; A second power-on mode, in which the control circuit automatically generates a power-on signal to make the smoke alarm enter the working state after detecting that the power button is pressed by the mounting bracket and lasts for more than a preset time threshold; The anti-theft alarm function includes: When the control circuit detects that the power button loses pressure when the smoke alarm is in the working state, it determines that it is an unauthorized disassembly, generates an alarm signal and makes the monitoring function of the smoke alarm ineffective.

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