Computer-assisted intelligent alarm device

Abstract

The invention discloses a computer-aided intelligent alarm device, and belongs to the technical field of computers, the computer-aided intelligent alarm device comprises a computer box body, two groups of sliding rails are fixedly connected to the bottom end of the interior of the computer box body, and a first sliding plate and a second sliding plate are slidably connected to the top ends of the two groups of sliding rails; the computer case comprises a computer case body, the side face of the right side of the first sliding plate is fixedly connected with a containing box, a warning assembly is assembled in the computer case body and comprises rectangular plates, the rectangular plates are fixedly connected to the side face of the first sliding plate, the number of the rectangular plates is two, and the front faces of the two rectangular plates are rotationally connected with clamping blocks. The side face of the second sliding plate is fixedly connected with square blocks through bolts, the number of the square blocks is two, and a first spring is fixed between the second sliding plate and the stopping plate. The computer anti-theft alarm device is used for solving the problem that most of computers lack corresponding alarm functions when being stolen by lawbreakers.

Description

Technical Field

[0001] The present invention relates to the field of computer technology, and in particular to a computer-aided intelligent alarm device. Background Art

[0002] At present, my country is vigorously promoting the application of computers. Computers, commonly known as computers, are a modern electronic computing machine used for high-speed computing. They can perform numerical calculations, logical calculations, and have storage and memory functions. They are modern intelligent electronic devices that can run according to programs and automatically and quickly process massive amounts of data.

[0003] Since computers usually store a large amount of information, once stolen, the user may suffer huge losses. However, most existing computers lack corresponding warning and alarm functions when stolen by criminals, and some computer components may be damaged during the theft, which has certain limitations. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a computer-aided intelligent alarm device, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present application provides a computer-aided intelligent alarm device, including a computer case, wherein the inner bottom end of the computer case is fixedly connected to a slide rail, and the slide rail is provided in two groups, and the top ends of the two groups of slide rails are slidably connected to a slide plate 1 and a slide plate 2, and the right side of the slide plate 1 is fixedly connected to a placement box, and the interior of the computer case is equipped with a warning component, and the warning component includes a rectangular plate, and the rectangular plate is fixedly connected to the side of the slide plate 1, and the rectangular plates are provided in two groups, and the front sides of the two groups of rectangular plates are rotatably connected to a card block, and the slide plate The sides of the two slides are fixedly connected with square blocks by bolts, and there are two groups of square blocks in total. The bottom end of the interior of the computer case is fixedly connected with a baffle plate, a spring is fixed between the two slides and the baffle plate, and an elastic bag is installed on the side of the two slides close to the one slide. A hydraulic cylinder passes through and is fixedly connected to the interior of the computer case, one end of the interior of the hydraulic cylinder is connected with a force rod through a piston sliding connection, and the other end of the interior of the hydraulic cylinder is connected with a pressure rod through a piston sliding connection, and the top of the computer case is fixedly connected with an L-shaped support rod, and a warning light is installed on the L-shaped support rod.

[0006] Preferably, the force-bearing rod is located on the movement track of the second slide plate, and the control switch of the warning light is located at the top and on the movement track of the pressure rod.

[0007] Preferably, a right-angled triangle-shaped card slot is provided at the bottom of the card block.

[0008] Preferably, buffer components are installed inside the two groups of slide rails.

[0009] Preferably, the buffer assembly includes a pressure plate, which is fixedly connected to the bottom end of the elastic bag, a rectangular groove is opened inside the two groups of slide rails, a rotating rod is penetrated and rotatably connected inside the two groups of rectangular grooves, a short plate is fixedly connected to one side of the two groups of rotating rods, a long plate is fixedly connected to the other side of the two groups of rotating rods, a top wheel is fixedly connected to the end of the two groups of long plates away from the rotating rods, a sliding plate is slidably connected to the inside of the two groups of slide rails, the top ends of the two groups of sliding plates are elastically connected to T-shaped plates through spring 2, the T-shaped plates are arranged in a straight line, and a total of eight groups are provided, and the top ends of the eight groups of T-shaped plates are rollingly connected to pulleys.

[0010] Preferably, the length of the long plate is half the length of the sliding plate.

[0011] Preferably, an alarm component is installed on the side of the computer case.

[0012] Preferably, the alarm assembly includes a rack rod 1, which is fixedly connected to the side of a skateboard 1, a rotating rod passes through the side of the computer case and is rotatably connected, a gear 1 is fixedly connected to one side of the rotating rod, a gear 2 is fixedly connected to the other side of the rotating rod, the gear 1 is meshed with the rack rod 1, a guide plate is fixedly connected to the side of the computer case, a rack rod 2 is slidably connected to the outer side of the guide plate, the gear 2 is meshed with the rack rod 2, the top of the rack rod 2 is fixedly connected to an annular support frame, and a speaker 1 is fixedly connected to the inside of the annular support frame.

[0013] Preferably, the second speaker is installed inside the first speaker, and the size of the bottom mouth of the first speaker is matched with the size of the bottom mouth of the second speaker.

[0014] The benefits of this application are: (1) The present application solves the problem that most of the thefts mentioned in the background art lack corresponding warning functions by arranging a force-bearing rod, a hydraulic cylinder, a pressure rod, an L-shaped support rod spring, a rectangular plate, a square block, a card block and an elastic bag, thereby issuing a warning to the criminals.

[0015] (2) The present application solves the problem in the background art that some computer components may be damaged during theft by providing a pressure plate, a short plate, a long plate, a top wheel, a slide plate, a rectangular groove, a T-plate, a pulley, a spring and a rotating rod. The computer components can slide slowly inside the storage box through the cooperation of the buffer assembly.

[0016] (3) The present application solves the problem that most theft devices mentioned in the background art lack corresponding alarm functions by arranging rack rod 1, gear 1, rotating rod, gear 2, rack rod 2, guide plate, annular support frame, speaker 1 and speaker 2, thereby emitting an alarm so that the staff can find the theft device in time and stop the behavior of the criminals. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings: Figure 1 It is a cross-sectional structural diagram of the overall computer case of the present invention; Figure 2 It is the overall back structure diagram of the present invention; Figure 3 is a structural diagram of the warning component of the present invention; Figure 4 This is a back structural diagram of a second slide plate of the present invention; Figure 5 It is a partial structural diagram of the warning component of the present invention; Figure 6 is a structural diagram of a buffer assembly of the present invention; Figure 7 It is a partial structural diagram of the buffer assembly of the present invention; Figure 8 It is a partial structural diagram of the buffer assembly of the present invention; Fig. 9 is a structural diagram of the alarm component of the present invention; Fig.10 It is a partial structural diagram of the alarm component of the present invention.

[0018] In the above figure, 1. Computer case; 2. Warning component; 3. Buffer component; 4. Alarm component; 5. Placement box; 6. Slide rail; 7. Slide plate 1; 8. Slide plate 2; 201. Force rod; 202. Hydraulic cylinder; 203. Pressure rod; 204. L-shaped support rod; 205. Spring 1; 207. Rectangular plate; 208. Square block; 209. Block; 210. Elastic bag; 211. Warning light; 212. Baffle plate; 301. Pressure plate; 302, short plate; 303, long plate; 304, top wheel; 305, sliding plate; 306, rectangular groove; 307, T-plate; 308, pulley; 309, spring 2; 310, rotating rod; 401, rack rod 1; 402, gear 1; 403, rotating rod; 404, gear 2; 405, rack rod 2; 406, guide plate; 407, annular support frame; 408, speaker 1; 409, speaker 2. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0020] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application are described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, the process, method, system, product or equipment comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0021] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0022] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0023] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. Example

[0025] See also Figure 1-Figure 8The present embodiment provides a computer-aided intelligent alarm device, including a computer case 1, a slide rail 6 is fixedly connected to the bottom of the computer case 1, and two groups of slide rails 6 are provided. The two groups of slide rails 6 are used to guide the sliding of slide plates 1 7 and slide plates 2 8 and prevent slide plates 1 7 and slide plates 2 8 from deviating when sliding. Slide plates 1 7 and slide plates 2 8 are slidably connected to the tops of the two groups of slide rails 6. A placement box 5 is fixedly connected to the right side of slide plate 1 7. The placement box 5 is used to place important items such as computer components that need to be protected. The computer case 1 is equipped with a warning component 2 inside. The warning component 2 includes a rectangular plate 207. The two groups of rectangular plates 207 are used to support two groups of card blocks 209 that rotate separately. The rectangular plate 2 07 is fixedly connected to the side of the slide plate 17, and there are two groups of rectangular plates 207. The front sides of the two groups of rectangular plates 207 are rotatably connected with a clamping block 209. When the two groups of clamping blocks 209 are rotated forty-five degrees counterclockwise, they can be clamped with the two groups of square blocks 208 respectively. The side of the slide plate 28 is fixedly connected with a square block 208 by bolts. There are two groups of square blocks 208. The inner bottom end of the computer case 1 is fixedly connected with a baffle plate 212. A spring 1 205 is fixed between the slide plate 28 and the baffle plate 212. When the slide plate 28 is squeezed, the two groups of springs 1 205 will also be elastically squeezed. When the squeezing force on the slide plate 28 disappears, the two groups of springs 1 205 automatically reset under the action of their own resilience and can push the slide plate 28 at the same time. The slide plate 28 An elastic bag 210 is installed on the side close to the slide plate 7. When the elastic bag 210 is squeezed, its elasticity becomes smaller. When the squeezing force on the elastic bag 210 disappears, the elastic bag 210 will expand and become larger as a whole. A hydraulic cylinder 202 is penetrated and fixedly connected to the inside of the computer case 1. One end of the hydraulic cylinder 202 is connected to the force rod 201 through a piston sliding. When the force rod 201 is subjected to pressure, the internal pressure of the hydraulic cylinder 202 increases, so that the pressure rod 203 can be squeezed out. The other end of the hydraulic cylinder 202 is connected to the pressure rod 203 through a piston sliding. The top of the computer case 1 is fixedly connected to an L-shaped support rod 204, and a warning light 211 is installed on the L-shaped support rod 204. The function of the L-shaped support rod 204 is to 11 is supported to facilitate the use of the warning light 211, the force-bearing rod 201 is located on the movement track of the slide plate 28, the control switch of the warning light 211 is located at the top and on the movement track of the pressure rod 203, when the pressure rod 203 squeezes the control switch of the warning light 211, the warning light 211 can be turned on to warn the behavior of the lawbreakers, the bottom of the block 209 is provided with a right-angled triangle-shaped card slot, the interior of the two groups of slide rails 6 is equipped with a buffer component 3, the buffer component 3 includes a pressing plate 301, the function of the pressing plate 301 is to press the two groups of short plates 302 when the elastic bag 210 expands and drives the pressing plate 301 to move downward. The pressing plate 301 is fixedly connected to the bottom end of the elastic bag 210, and the interior of the two groups of slide rails 6 is provided with a rectangular groove 306.The two sets of rectangular grooves 306 are used to place eight sets of pulleys 308 and facilitate the sliding of the two sets of sliding plates 305. The interiors of the two sets of rectangular grooves 306 are penetrated and rotatably connected with a rotating rod 310. One side of the two sets of rotating rods 310 is fixedly connected to a short plate 302. The other side of the two sets of rotating rods 310 is fixedly connected to a long plate 303. The ends of the two sets of long plates 303 away from the rotating rods 310 are fixedly connected to the top wheels 304. The interiors of the two sets of slide rails 6 are slidably connected to the sliding plates 305. The two sets of sliding plates 305 are fixedly connected to the top wheels 304. The top of each of the long plates 303 is elastically connected to a T-shaped plate 307 through a spring 2 309. There are eight groups of T-shaped plates 307 arranged in a straight line. The tops of the eight groups of T-shaped plates 307 are all rollingly connected to pulleys 308. The length of the long plate 303 is half the length of the sliding plate 305. The length of the long plate 303 is half the length of the sliding plate 305, so that when the long plate 303 drives the top wheel 304 to rise, the force on the sliding plate 305 is balanced, and the sliding plate 305 will not tilt when it moves upward.

[0026] Working principle: when in use, pull the handle of the placement box 5. Since the placement box 5 and the slide plate 7 are fixed, the slide plate 7 and the placement box 5 are pulled out synchronously on the internal slide rail 6 of the computer case 1 by pulling the handle of the placement box 5. Then, the computer components that need to be protected are placed in the placement box 5. At this time, push the handle of the placement box 5 to drive the placement box 5 and the slide plate 7 to move synchronously into the computer case 1. At this time, when the slide plate 7 moves inward, the two groups of rectangular plates 207 on the side of the slide plate 7 facilitate to drive the two groups of card blocks 209 to approach the slide plate 2 8 inside the computer case 1. When the slide plate 17 approaches the slide plate 28, the two groups of card blocks 209 on the side of the slide plate 17 will be squeezed by the two groups of square blocks 208 on the side of the slide plate 28 respectively. At this time, the two groups of card blocks 209 will be Figure 3In the state diagram, the computer 200 is rotated counterclockwise by 45 degrees, so that the right-angled triangular slots at the bottom of the two groups of card blocks 209 are respectively against one right-angled surface of the two groups of square blocks 208. At this time, the placement box 5 is clamped and placed inside the computer case 1, and when the slide plate 1 7 approaches the slide plate 2 8, the slide plate 1 7 will squeeze the elastic capsule 210, so that the elastic capsule 210 is in a squeezed state, and the slide plate 2 8 will also be squeezed due to the movement of the slide plate 1 7. At this time, the spring 1 205 is elastically compressed. When criminals want to steal computer components inside the placement box 5, they can move toward the computer case 1 again. The internal push placement box 5 drives the slide plate 7 to move inward, so that the two groups of card blocks 209 on the side of the slide plate 7 are respectively separated from one inclined surface of the two groups of square blocks 208, and the straight ends of the two groups of card blocks 209 respectively squeeze the right-angle ends of the two groups of square blocks 208, so that the slide plate 7 drives the placement box 5 to separate. At this time, the squeezing force of the slide plate 7 on the elastic capsule 210 disappears, so that the elastic capsule 210 is elastically enlarged. When the elastic capsule 210 is elastically enlarged, it squeezes the slide plate 28 again, and the slide plate 28 squeezes the spring 1 205 again. When the slide plate 7 completely stops squeezing the elastic capsule 210, the elastic capsule 210 is elastically enlarged. The spring 1 205 drives the slide plate 2 8 to move outside the door of the computer case 1 under the action of its own rebound force. When the slide plate 2 8 is driven to move, the slide plate 2 8 can squeeze the force-bearing rod 201 during its movement. At this time, the liquid pressure inside the hydraulic cylinder 202 can push out the pressure rod 203. During the pushing process of the pressure rod 203, the switch of the warning light 211 on the top of the computer case 1 can be triggered to emit a bright light to warn the lawless elements. At the same time, when the elastic capsule 210 is elastically enlarged, the pressure plate 301 at the bottom of the elastic capsule 210 moves downward. When the pressure plate 301 is under the action of the elastic capsule 210, When moving downward, the two groups of short plates 302 can be squeezed, and at this time, the two groups of short plates 302 make the two groups of long plates 303 rise under the action of the two groups of rotating rods 310. When the two groups of long plates 303 rise, they can drive the two groups of top wheels 304 to move upward synchronously. At this time, when the two groups of top wheels 304 push upward, they can move the two groups of sliding plates 305 upward, so that the slide plate 7 can slide through the two groups of eight pulleys 308 when sliding, so that the slide plate 7 can drive the placement box 5 to slide slowly to avoid damage to some computer components inside the placement box 5 due to excessive sliding speed, thereby causing losses. Example

[0027] See also Figure 1-Figure 10The side of the computer case 1 is equipped with an alarm component 4, which includes a rack rod 401, which is fixedly connected to the side of the slide plate 7. A rotating rod 403 is passed through the side of the computer case 1 and is rotatably connected. The rotating rod 403 can make the gear 1 402 and the gear 2 404 perform synchronous rotation. One side of the rotating rod 403 is fixedly connected to the gear 1 402, and the other side of the rotating rod 403 is fixedly connected to the gear 2 404. The gear 1 402 is meshed with the rack rod 401. The side of the computer case 1 is fixedly connected to a guide plate 406. The function of the guide plate 406 is to The movement trajectory of rod 2 405 is guided to prevent rack rod 2 405 from shifting during movement, resulting in inaccurate movement. The outer side of guide plate 406 is slidably connected with rack rod 2 405, gear 2 404 is meshed with rack rod 2 405, and the top of rack rod 2 405 is fixedly connected with an annular support frame 407. The function of annular support frame 407 is to support speaker 1 408 to follow and move synchronously. Speaker 1 408 is fixedly connected to the inside of annular support frame 407, and speaker 2 409 is installed inside speaker 1 408, and the trumpet mouth at the bottom of speaker 1 408 is matched with the trumpet mouth at the bottom of speaker 2 409 in size.

[0028] Working principle: When the slide plate 7 drives the placement box 5 to slide out, the rack rod 401 on the side of the slide plate 7 can mesh with the gear 402 on one side of the rotating rod 403 that penetrates the computer case 1, so that the gear 402 can rotate. When the gear 404 can rotate, it can also drive the gear 404 on the other side of the rotating rod 403 to rotate, so that the gear 402 and the gear 404 rotate synchronously. When the gear 404 rotates, the gear 404 meshes with the rack rod 405, so the gear When the rack rod 404 rotates, the rack rod 405 can move upward on the guide plate 406 on the side of the computer case 1. At this time, an annular support frame 407 is fixed to the top of the rack rod 405. Therefore, when the rack rod 405 moves upward, it can drive the annular support frame 407 to move upward synchronously. At the same time, the annular support frame 407 can drive the speaker 1 408 to move upward, so that the volume of the sound is further amplified on the basis of the speaker 2 409, thereby reminding the staff to discover the behavior of the lawbreakers, stop them in time, and protect the computer components.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A computer-aided intelligent alarm device, comprising a computer case (1), wherein the bottom end of the computer case (1) is fixedly connected to a slide rail (6), wherein two groups of the slide rails (6) are provided, wherein the top ends of the two groups of slide rails (6) are slidably connected to a slide plate 1 (7) and a slide plate 2 (8), wherein the right side of the slide plate 1 (7) is fixedly connected to a placement box (5), and an alarm component (2) is installed inside the computer case (1); It is characterized in that The warning component (2) comprises a rectangular plate (207), the rectangular plate (207) being fixedly connected to the side of the first slide plate (7), and the rectangular plates (207) being provided in two groups, and the front faces of the two groups of rectangular plates (207) are both rotatably connected to a clamping block (209), the side of the second slide plate (8) being fixedly connected to a square block (208) by bolts, and the square blocks (208) being provided in two groups, and the inner bottom end of the computer case (1) being fixedly connected to a baffle plate (212), and a fixing member (212) being fixedly connected between the second slide plate (8) and the baffle plate (212). Spring one (205), the side of the slide plate two (8) close to the slide plate one (7) is equipped with an elastic bag (210), the inside of the computer case (1) is penetrated by and fixedly connected with a hydraulic cylinder (202), one end of the inside of the hydraulic cylinder (202) is connected to a force rod (201) through a piston sliding, and the other end of the inside of the hydraulic cylinder (202) is connected to a pressure rod (203) through a piston sliding, and the top of the computer case (1) is fixedly connected with an L-shaped support rod (204), and the L-shaped support rod (204) is equipped with a warning light (211).

2. A computer-aided intelligent alarm device according to claim 1, characterized in that: The force-bearing rod (201) is located on the movement track of the second slide plate (8), and the control switch of the warning light (211) is located at the top and on the movement track of the pressure rod (203).

3. A computer-aided intelligent alarm device according to claim 1, characterized in that: A right-angled triangle-shaped slot is provided at the bottom of the clamping block (209).

4. A computer-aided intelligent alarm device according to claim 1, characterized in that: Buffer components (3) are installed inside the two sets of slide rails (6).

5. A computer-aided intelligent alarm device according to claim 4, characterized in that: The buffer assembly (3) comprises a pressing plate (301), wherein the pressing plate (301) is fixedly connected to the bottom end of the elastic bag (210), and the insides of the two sets of slide rails (6) are provided with rectangular grooves (306), and the insides of the two sets of rectangular grooves (306) are penetrated and rotatably connected with a rotating rod (310), and one side of the two sets of rotating rods (310) is fixedly connected to a short plate (302), and the other side of the two sets of rotating rods (310) is fixedly connected to a long plate (303). ), one end of the two groups of long plates (303) away from the rotating rod (310) is fixedly connected to a top wheel (304), the interior of the two groups of slide rails (6) is slidably connected to a sliding plate (305), the top ends of the two groups of sliding plates (305) are elastically connected to a T-shaped plate (307) through a second spring (309), and the T-shaped plates (307) are arranged in a straight line, with a total of eight groups, and the top ends of the eight groups of T-shaped plates (307) are rollingly connected to pulleys (308).

6. A computer-aided intelligent alarm device according to claim 5, characterized in that: The length of the long plate (303) is half the length of the sliding plate (305).

7. A computer-aided intelligent alarm device according to claim 6, characterized in that: An alarm component (4) is mounted on the side of the computer case (1).

8. A computer-aided intelligent alarm device according to claim 7, characterized in that: The alarm assembly (4) comprises a rack rod (401), the rack rod (401) being fixedly connected to the side of a slide plate (7), a rotating rod (403) penetrating the side of the computer case (1) and being rotatably connected thereto, a gear (402) being fixedly connected to one side of the rotating rod (403), a gear (404) being fixedly connected to the other side of the rotating rod (403), the gear (402) being meshed with the rack rod (401), a guide plate (406) being fixedly connected to the side of the computer case (1), a rack rod (405) being slidably connected to the outer side of the guide plate (406), the gear (404) being meshed with the rack rod (405), a ring-shaped support frame (407) being fixedly connected to the top of the rack rod (405), a speaker (408) being fixedly connected to the inside of the ring-shaped support frame (407).

9. A computer-aided intelligent alarm device according to claim 8, characterized in that: The second speaker (409) is installed inside the first speaker (408), and the bottom end of the speaker (408) is matched in size with the bottom end of the speaker (409).

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