Security security alarm device

Abstract

The utility model discloses a security alarm device. The display stand is composed of an upper cover plate and a bearing part, a mounting groove is formed in the center of the bearing part, and a notch is formed in the upper cover plate. The alarm device is arranged in the mounting groove and comprises a trigger plate capable of penetrating through the notch to move up and down, a connecting column with a clamping groove and a self-locking structure, and electric contacts including a contact and an elastic piece are arranged. When the self-lock is pressed for the first time, the contact and the elastic sheet are separated to form an open circuit to enter pre-alarm; and after releasing, the trigger plate rebounds and resets under the action of the spring, and the contact and the elastic sheet are closed to trigger an alarm. The sliding groove guide clamping block and the installation block are convenient for modular installation, the structure is simple, and power consumption is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to cultural relic exhibition and security technology field especially relates to a cultural relic protection security alarm device. BACKGROUND

[0002] In the museum, exhibition hall and other places, cultural relics are often displayed in an open or semi-open manner, and security protection is very important, and timely alarm for abnormal behaviors such as taking away and moving needs to be realized under the premise of not affecting the viewing.

[0003] The existing security scheme depends on various sensors such as differential pressure sensors, and triggers alarm when the cultural relics are taken away by continuously monitoring. Although this kind of scheme can effectively protect the cultural relics, the cost of the sensor body and the supporting system is high, and the overall investment is large in the scene with a large number of exhibition points. In addition, the sensor needs to be powered on for a long time to keep detecting, and the operation energy consumption is high. When placing cultural relics or adjusting the position of the exhibition, false alarm is easy to occur, which affects the use experience. Therefore, the existing technology still needs to be improved to meet the needs of cultural relic exhibition while considering low cost, low power consumption, reducing false alarm and convenient installation and maintenance. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the problem of high cost caused by the general dependence of cultural relic protection alarm scheme on electronic sensors, long-term power-on, and false alarm when placing or adjusting cultural relics, and provides a cultural relic protection security alarm device with low cost, low power consumption and convenient installation.

[0005] The technical scheme of the utility model is as follows: a cultural relic protection security alarm device, comprising: a display stand comprising an upper cover plate and a bearing part, the bearing part is provided with a tenon, the upper cover plate is provided with a groove corresponding to the tenon; a mounting groove is arranged in the center of the bearing part, and the upper cover plate is provided with a corresponding slot;

[0006] An alarm device is arranged in the mounting groove and comprises: a trigger plate and a self-locking structure, the trigger plate can move up and down relative to the upper cover plate through the slot, a connecting column is fixedly arranged below the trigger plate, a clamping groove is arranged on the connecting column, the self-locking structure comprises a clamping block, a base, a self-locking rod and a rhombic block fixedly arranged on one side of the clamping block, the clamping block and the clamping groove are mutually clamped, a spring is arranged above the rhombic block, one end of the spring is connected with a connecting piece on the rhombic block, and the other end is connected with a limiting column fixedly arranged on the base; and an electric contact point is composed of a contact point and a spring piece, the contact point is arranged above the rhombic block, and the spring piece is arranged on the base, so as to form an electric closure to trigger alarm when the trigger plate is bounced.

[0007] Further, according to the foregoing cultural relic security alarm device, the rhombic block is provided with a recessed position for self-locking, the self-locking rod is clamped into the recessed position to form locking when the trigger plate is pressed for the first time, the contact is separated from the elastic sheet to disconnect the circuit, and a pre-alarm state is entered.

[0008] Preferably, according to the foregoing cultural relic security alarm device, the self-locking rod is separated from the recessed position to release the locking under the action of the guide surface of the rhombic block when the trigger plate is pressed for the second time, the trigger plate is bounced upward under the action of the elastic force of the spring, and an operating state is entered.

[0009] Preferably, in some embodiments, according to the foregoing cultural relic security alarm device, the base is provided with a sliding groove for guiding the sliding of the clamping block.

[0010] Preferably, according to the foregoing cultural relic security alarm device, the limiting column is used to limit the relative movement stroke of the rhombic block and the self-locking rod.

[0011] The utility model discloses a kind of cultural relic security alarm devices, including base, trigger plate, limiting column, self-locking rod, rhombic block, contact, elastic sheet and spring, the base is provided with installation groove, the trigger plate is arranged on the base, and the trigger plate is provided with connecting column, and the connecting column is connected with the self-locking rod, and the self-locking rod is connected with the rhombic block, and the rhombic block is provided with contact, and the contact is connected with the elastic sheet, and the elastic sheet is connected with the spring. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a whole structure schematic view of a kind of cultural relic security alarm device provided in the embodiment of the application;

[0013] Figure 2 It is an explosion structure schematic view of a kind of cultural relic security alarm device provided in the embodiment of the application;

[0014] Figure 3 It is Figure 2 It is the structure schematic view of the alarm device of a kind of cultural relic security alarm device provided in the embodiment of the application;

[0015] Figure 4 It is Figure 3 It is the enlarged schematic view of A area structure of a kind of cultural relic security alarm device provided in the embodiment of the application;

[0016] Figure 5 An explosion structure schematic diagram of a cultural relic protection alarm device provided by an embodiment of the present application is shown in the following figure;

[0017] Reference Signs:

[0018] 1, display stand; 11, upper cover plate; 111, notch; 12, bearing part; 121, mounting groove; 122, tenon; 2, alarm device; 21, trigger plate; 211, connecting column; 2111, clamping groove; 22, self-locking structure; 221, clamping block; 222, base; 2221, sliding groove; 223, self-locking rod; 224, rhombus block; 225, spring; 226, contact; 227, elastic sheet; 228, mounting block; 229, limiting column. DETAILED DESCRIPTION

[0019] The technical solutions in the present application will be described in detail below with reference to the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. The components of the present application described and shown in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0020] In museums, exhibition halls and other places, cultural relics are often displayed in an open or semi-open manner, and security protection is very important. Timely alarm for abnormal behaviors such as taking away and moving should be realized without affecting the viewing.

[0021] The existing security protection scheme relies on various sensors such as differential pressure sensors to trigger an alarm when the cultural relics are taken away by continuously monitoring. Although this kind of scheme is effective, the cost of the sensor body and the supporting system is relatively high, and the overall investment is large in the scene where the number of display points is large. In addition, the sensor usually needs to be powered on for a long time to keep detecting, and the running energy consumption is high. During the process of placing cultural relics or adjusting the position of the exhibition, false alarms are easy to occur, affecting the use experience. Therefore, the existing technology is difficult to meet the needs of cultural relic display while considering the goals of low cost, low power consumption, reducing false alarms and facilitating installation and maintenance, and needs to be improved.

[0022] The present application aims to solve the problems of high cost, long-term power-on, and false alarm when placing or adjusting cultural relics caused by the general reliance on electronic sensors in cultural relic alarm schemes, and provides a cultural relic protection alarm device with low cost, low power consumption, and convenient installation.

[0023] The utility model provides a kind of cultural relic security alarm device, comprising: display stand 1, including upper cover plate 11 and bearing part 12, the bearing part 12 is equipped with tenon 122, the upper cover plate 11 is equipped with the recess corresponding with the tenon 122;Mounting groove 121, being opened in the center of the bearing part 12, the upper cover plate 11 is equipped with corresponding slot 111;Alarm device 2 is arranged in the mounting groove 121, comprising: trigger plate 21 and self-locking structure 22, the trigger plate 21 can pass through the slot 111 relative to the upper cover plate 11 up and down movement, the trigger plate 21 below is fixedly provided with connecting column 211, the connecting column 211 is equipped with clamping groove 2111, the self-locking structure 22 includes clamping block 221, base 222, self-locking rod 223 and diamond block 224 fixedly provided in the side of clamping block 221, the clamping block 221 and the clamping groove 2111 are mutually clamped, the upper side of the diamond block 224 is equipped with spring 225, one end of the spring 225 is connected with the connecting piece on the diamond block 224, and the other end is connected in the limiting column 229 fixedly provided on the base 222;And electric contact, by contact 226 and spring leaf 227, the contact 226 is arranged above the diamond block 224, the spring leaf 227 is arranged on the base 222, for when the trigger plate 21 is formed electrically closed to trigger alarm when bouncing.

[0024] The utility model discloses a kind of cultural relic security alarm device, comprising: display stand 1, including upper cover plate 11 and bearing part 12, the bearing part 12 is equipped with tenon 122, the upper cover plate 11 is equipped with the recess corresponding with the tenon 122;Mounting groove 121, being opened in the center of the bearing part 12, the upper cover plate 11 is equipped with corresponding slot 111;Alarm device 2 is arranged in the mounting groove 121, comprising: trigger plate 21 and self-locking structure 22, the trigger plate 21 can pass through the slot 111 relative to the upper cover plate 11 up and down movement, the trigger plate 21 below is fixedly provided with connecting column 211, the connecting column 211 is equipped with clamping groove 2111, the self-locking structure 22 includes clamping block 221, base 222, self-locking rod 223 and diamond block 224 fixedly provided in the side of clamping block 221, the clamping block 221 and the clamping groove 2111 are mutually clamped, the upper side of the diamond block 224 is equipped with spring 225, one end of the spring 225 is connected with the connecting piece on the diamond block 224, and the other end is connected in the limiting column 229 fixedly provided on the base 222;And electric contact, by contact 226 and spring leaf 227, the contact 226 is arranged above the diamond block 224, the spring leaf 227 is arranged on the base 222, for when the trigger plate 21 is formed electrically closed to trigger alarm when bouncing.

[0025] In some embodiments, the cultural relic security alarm device comprises a display stand 1, which is composed of an upper cover plate 11 and a bearing part 12, the bearing part 12 is provided with a tenon 122, and the upper cover plate 11 is provided with a groove corresponding to the tenon 122, and the two are clamped with each other to form stable assembly. The center of the bearing part 12 is provided with a mounting groove 121, and the upper cover plate 11 is correspondingly provided with a notch 111 matched with the shape of the trigger plate 21, which is used to provide a passing space for the trigger plate 21 when pressing and resetting. The alarm device 2 is arranged in the mounting groove 121 as a whole, which comprises a trigger plate 21 and a self-locking structure 22. The trigger plate 21 can move up and down relative to the upper cover plate 11, and when pressed, it passes through the notch 111 and transmits displacement to the mounting groove 121. The connecting column 211 is fixed below the trigger plate 21, and the clamping groove 2111 is arranged on the connecting column 211. The self-locking structure 22 comprises a clamping block 221, a base 222, a self-locking rod 223 and a rhombus block 224 fixed on one side of the clamping block 221. The clamping block 221 and the clamping groove 2111 of the connecting column 211 are clamped with each other to realize the retention of the pressed position. The upper part of the rhombus block 224 is provided with a spring 225, one end of the spring 225 is connected with a connecting piece arranged on the rhombus block 224, and the other end is connected with a limiting column 229 fixed on the base 222, so as to provide an upward rebounding force when the device is reset and limit the movement stroke of the self-locking part. The alarm device 2 further comprises an electric contact point, which is composed of a contact point 226 and a spring piece 227. The contact point 226 is arranged above the rhombus block 224, and the spring piece 227 is arranged on the base 222. When the trigger plate 21 is reset, the two are in contact to form an electric closure, so as to output an alarm trigger signal.

[0026] When assembling, the alarm device 2 is placed in the mounting groove 121 as an integral module and is fixed with the bearing part 12. After the upper cover plate 11 and the bearing part 12 are clamped with each other through the tenon 122 and the groove, the trigger plate 21 is coaxially aligned with the notch 111, which ensures that it can smoothly pass through the notch 111 when pressed. In use, the operator presses the trigger plate 21 downward, the connecting column 211 moves downward together and makes the clamping block 221 and the clamping groove 2111 clamped, the self-locking structure 22 retains the trigger plate 21 at the pressed position, the spring 225 is in a compressed state, and the electric contact point is in a separated state. When the external pressure on the trigger plate 21 is released, the spring 225 releases and pushes the trigger plate 21 upward to reset through the notch 111, and the contact point 226 and the spring piece 227 restore contact to form an electric closure, thereby triggering the alarm. The whole process ensures the stability of the external structure through the clamping cooperation of the upper cover plate 11 and the bearing part 12, realizes the pressed retention and automatic reset through the rebounding cooperation of the self-locking structure 22 and the spring 225 in the mounting groove 121, and realizes the reliable output of the alarm signal through the on-off of the electric contact point 226 and 227.

[0027] In an embodiment, the rhombus block 224 is provided with a recessed position for self-locking, and the self-locking rod 223 is clamped into the recessed position when the trigger plate 21 is pressed for the first time to form a lock, so that the contact 226 is separated from the elastic sheet 227 to disconnect the circuit and enter the pre-alarm state. Specifically, the rhombus block 224 is provided with a recessed position for self-locking, which cooperates with the end shape of the self-locking rod 223 and is guided by the transition of the adjacent guide surface, so that the self-locking rod 223 enters the locking position area along the predetermined path under the force. When assembled, the self-locking rod 223 is arranged in the same movement plane with the rhombus block 224 in the mounting groove 121, and the recessed position is set at the target position of the pressed trigger plate 21 to ensure that it can be stably clamped every time it is pressed to this position. When in use, the operator presses the trigger plate 21 for the first time, and the trigger plate 21 drives the connecting column 211 below it to move downward as a whole, and the movement of the connecting column 211 simultaneously pushes the self-locking structure 22 cooperating with it to link, and the self-locking rod 223 gradually fits and slides into the recessed position under the guidance of the guide surface of the rhombus block 224 to form a reliable mechanical self-locking; At this time, the trigger plate 21 is kept at the pressed position and does not rebound, and the spring 225 is in a compressed energy storage state. In the same process of completing the above self-locking action, the on-off relationship of the electrical contact changes: because the trigger plate 21 is pressed down and clamped into the recessed position by the self-locking rod 223, the contact 226 in the electrical contact is forced to separate from the elastic sheet 227, and the circuit is changed from being connected to being disconnected, and the device enters the pre-alarm state.

[0028] In some embodiments, the self-locking rod 223 is released from the recessed position under the guide surface of the diamond block 224 when the trigger plate 21 is pressed for the second time, the trigger plate 21 bounces back up under the elastic force of the spring 225, and enters the running state. Specifically, when in the pre-alarm state, the operator presses the trigger plate 21 for the second time, causing the trigger plate 21 and the mechanism below it to move further downward, the self-locking rod 223 climbs out of the recessed position under the guide surface of the diamond block 224 and is released from the locked position, completing the release of the lock. At the same time of releasing the lock, the spring 225 is released from the compressed state and exerts an upward bouncing force on the trigger plate 21: if the trigger plate 21 is not pressed by an external object at this time, it will immediately bounce back up under the elastic force after the pressing is released, and be reset through the slot 111 of the upper cover plate 11; if there is an artifact or its protective cabinet pressing above the trigger plate 21 at this time, the trigger plate 21 is pressed below and does not bounce back although it has been released from the lock, until the external pressing is released. Once the external pressing is released, the trigger plate 21 automatically bounces up to the reset position under the action of the spring 225, causing the contact 226 in the electrical contact to resume contact with the spring 227 to form a closure, thereby outputting an alarm trigger signal. Thus, the switch from the pre-alarm state to the running state is achieved by pressing for the second time: in the running state, the trigger plate 21 is in the unlocked but can be pressed state, waiting to bounce back, the circuit remains open when the artifact exists, and the circuit is closed to trigger the alarm when the artifact is removed.

[0029] In some embodiments, the base 222 is provided with a sliding groove 2221 for guiding the sliding of the clamping block 221 along the sliding groove 2221. The sliding groove 2221 is integrally formed on the base 222 to provide a defined linear guide for the clamping block 221, allowing the clamping block 221 to move smoothly along the predetermined path during the operation of the device. The width of the sliding groove 2221 is adapted to the shape of the clamping block 221 with a gap to ensure lateral positioning while reducing friction and the risk of jamming. The continuous guide surface of the groove wall provides restraint to the clamping block 221, preventing it from swinging or deflecting during movement. When assembling, the clamping block 221 is placed in the sliding groove 2221 at the same working height as the clamping groove 2111 of the connecting column 211; when the trigger plate 21 is pressed for the first time, the connecting column 211 moves downward with the self-locking structure 22, the clamping block 221 slides in the sliding groove 2221 in the locking direction and is reliably clamped into the clamping groove 2111, achieving the holding of the pressed position; when the trigger plate 21 is pressed for the second time, the clamping block 221 smoothly slides in the opposite direction in the sliding groove 2221 and is released from the clamping groove 2111 to cooperate with the release of the self-locking, and then the trigger plate 21 bounces back up to the reset position under the elastic force of the spring 225.

[0030] In some embodiments, the limit post 229 is used to limit the relative movement stroke of the diamond block 224 and the self-locking rod 223. Specifically, the limit post 229 is fixed on the base 222 and forms a stop cooperation with the connecting piece arranged on the diamond block 224. The limit post 229 is arranged axially along the spring 225 as the fixed end of the spring 225, while upper and lower stop surfaces are arranged at its opposite two positions: when the first pressing is performed, the diamond block 224 moves downward with the mechanism, the connecting piece contacts the upper stop surface of the limit post 229, and the diamond block 224 and the self-locking rod 223 are limited to the locking end position; when the second pressing is performed, the diamond block 224 moves reversely along the guide surface, the connecting piece contacts the lower stop surface of the limit post 229, and it is limited to reach the unlocking end position. The limit post 229 limits the relative movement of the diamond block 224 and the self-locking rod 223 within the effective stroke range of clamping, holding and disengaging, and provides a stable rebound force to the trigger plate 21 by the spring 225 with the limit post 229 as the anchor point.

[0031] In some embodiments, the normally open circuit is in a state where the contact 226 is in contact with the spring 227; when in the pre-alarm state, the trigger plate 21 is pressed for the first time and locked, the contact 226 is separated from the spring 227 to form an open circuit; when in the running state, the trigger plate 21 is released from the surface pressing, the trigger plate 21 is reset under the action of the spring 225, the contact 226 is in contact with the spring 227 again to output an alarm signal. Specifically, the electrical contact is composed of a fixed contact 226 arranged above the diamond block 224 and an elastic sheet conductor 227 mounted on the base 222. The fixed contact 226 is preferably made of copper or brass substrate and plated with silver or gold to reduce contact resistance and improve oxidation resistance; the contact end face can be made into a micro-arc surface or a hemispherical point to form a stable point contact when closed. The elastic sheet conductor 227 is preferably made of phosphor bronze, beryllium bronze or stainless steel spring sheet material, which is formed by stamping and then tempered to obtain stable elasticity, and the free end is arranged towards the fixed contact 226, which applies a pre-pressure to the fixed contact 226 when at rest, and provides a stable contact force after closing; the root of the spring 227 is fixed to the insulating mounting position on the base 222 by screwing or clamping, and the base 222 can be made of PBT, PA66 or PC insulating engineering plastic to ensure necessary insulation and creepage distance. When the open circuit is self-checked, the trigger plate 21 is not pressed, the free end of the spring 227 is in natural contact with the fixed contact 226 to form an electrical closure; then the first pressing is performed, the trigger plate 21 drives the self-locking structure 22 to act, the self-locking rod 223 is clamped into the recessed position under the guidance of the diamond block 224, the trigger plate 21 is kept in the pressed position, and the spring 225 is in a compressed energy storage state; at the same time, the self-locking structure 22 drives the fixed contact 226 or its carrier thereon to displace, so that the relative position of the fixed contact 226 and the spring 227 is separated, the circuit is changed from closed to open, and the device enters the pre-alarm state and maintains low-power standby. After the second pressing is performed to release the lock, the device enters the running state: if the cultural relics or their protection cabinet press the trigger plate 21 externally at this time, the trigger plate 21 remains pressed although it is unlocked, and the electrical contact remains open; when the external pressing is released, the compressed spring 225 releases the elastic force to push the trigger plate 21 to reset upward through the slot 111, the spring 227 returns to the initial position under the action of its own elasticity and structural pre-pressure, and the electrical contact is reconnected to output an alarm trigger signal.

[0032] In some embodiments, the base 222 is provided with a mounting block 228 on one side for mounting the alarm device 2 in the mounting slot 121. Specifically, the mounting block 228 is integrally formed on one side of the base 222 and protrudes laterally relative to the main body of the base 222. The outer side of the mounting block 228 is provided with mutually perpendicular guide surfaces and positioning surfaces for cooperating with the side walls of the mounting slot 121 to achieve insertion guidance and final positioning. During assembly, the alarm device 2 is pushed along the guide direction of the mounting slot 121 with the mounting block 228 as the leading end. The guide surfaces of the mounting block 228 first come into contact with the corresponding guide surfaces in the mounting slot 121 to correct the posture. Further pushing until the positioning surfaces come into contact with the stepped surfaces in the mounting slot 121 to form circumferential limiting, thereby stably positioning the alarm device 2 in the horizontal and vertical directions. Considering electrical insulation and dimensional stability, the base 222 and the mounting block 228 are preferably made of insulating engineering plastic, and an anti-loosening structure is provided at the contact area between the mounting block 228 and the mounting slot 121 to improve the anti-loosening ability during long-term use. Through the above structure and assembly process, the mounting block 228 can quickly guide, accurately position and reliably fix the alarm device 2 in the mounting slot 121 without occupying the appearance space of the display stand 1, and is convenient for subsequent maintenance and disassembly.

[0033] The above are only preferred embodiments of the present application and are not used to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A cultural heritage security alarm device, characterized in that, The utility model relates to a display stand (1) and alarm device (2), display stand (1) including upper cover plate (11) and bearing part (12), bearing part (12) is equipped with tenon (122) on it, upper cover plate (11) is equipped with recess corresponding with tenon (122). Mounting groove (121) is opened in the center of bearing part (12), and the corresponding slot (111) is opened in upper cover plate (11). Alarm device (2) is arranged in mounting groove (121) and includes trigger plate (21) and self-locking structure (22), trigger plate (21) can pass through slot (111) and move up and down relative to upper cover plate (11), connecting column (211) is fixedly arranged below trigger plate (21), clamping groove (2111) is opened in connecting column (211), self-locking structure (22) includes clamping block (221), base (222), self-locking rod (223) and rhombus block (224) fixedly arranged on one side of clamping block (221), clamping block (221) and clamping groove (2111) are mutually clamped, spring (225) is arranged above rhombus block (224), one end of spring (225) is connected with connecting piece on rhombus block (224), and the other end is connected with limiting column (229) fixedly arranged on base (222). And electric contact is composed of contact (226) and spring piece (227), contact (226) is arranged above rhombus block (224), spring piece (227) is arranged on base (222), and electric closure is formed when trigger plate (21) is bounced to trigger alarm. Rhombus block (224) is arranged with recessed position for self-locking, self-locking rod (223) is clamped into recessed position to form locking when trigger plate (21) is pressed for the first time, contact (226) is separated from spring piece (227) to disconnect circuit, and pre-alarm state is entered.

2. The document security alarm device of claim 1, wherein, Self-locking rod (223) is separated from recessed position to release locking under the action of guide surface of rhombus block (224) when trigger plate (21) is pressed for the second time, trigger plate (21) is bounced upward under the action of spring (225), and running state is entered.

3. The document security alarm device of claim 2, wherein, Base (222) is arranged with sliding groove (2221) for guiding the sliding of clamping block (221).

4. The document security alarm device of claim 1, wherein, Limiting column (229) is used for limiting the relative movement stroke of rhombus block (224) and self-locking rod (223).

5. The document security alarm device of claim 1, wherein, Contact (226) and spring piece (227) are in contact when starting circuit normality, contact (226) and spring piece (227) are separated to form open circuit when being in pre-alarm state, trigger plate (21) is pressed for the first time and locked, trigger plate (21) is bounced and reset under the action of spring (225) when being in running state, contact (226) and spring piece (227) are re-contacted to output alarm signal.

6. The document security alarm device of claim 3, wherein, ​ 7. The document security alarm device of claim 4, wherein, The base (222) is provided with a mounting block (228) on one side, which is used for mounting the alarm device (2) in the mounting groove (121).

Images