A safe student desk with earthquake resistance and risk avoidance

Abstract

The present invention provides a safe student desk with earthquake resistance and risk avoidance, comprising a top plate and a plurality of leg assemblies symmetrically fixed on both sides of the bottom of the top plate, wherein a primary protection space is formed between the bottom of the top plate and the plurality of leg assemblies, a storage structure is arranged at the bottom of the top plate, a conversion protection mechanism is arranged at the bottom of the storage structure, the conversion protection mechanism has a supporting state and a protection state, the conversion protection mechanism is used for students to place learning tools in the supporting state, and the conversion protection mechanism is used for providing students with a secondary protection space in the protection state, the present invention can assemble a secondary protection space in the original desk in a short time, thereby improving the comprehensiveness of protection, and improving the dustproof and sealing performance of the secondary protection space, so as to solve the problems that the existing earthquake-resistant desks have deficiencies in protection and use.

Description

Technical Field

[0001] The invention relates to the technical field of student tools, and in particular to a safe student desk with earthquake resistance and risk avoidance functions. Background Art

[0002] Earthquake is a kind of natural disaster. Strong earthquake has great destructive power and often causes devastating blows to buildings in disaster areas, especially in schools, where there are many students and they are relatively concentrated. When an earthquake occurs, it is difficult for students on high floors to run out of the teaching building for shelter. Therefore, the existing earthquake avoidance methods in schools are to hide indoors. Generally, for indoor earthquake avoidance, you should choose to hide under strong objects that can cover the body and in places that are easy to form triangular spaces. Places with small openings and supports can provide better support and form protective spaces when the building collapses. Therefore, in the classroom, you usually hide under the table.

[0003] In the existing technology, since the load-bearing capacity of the desks is not enough, hiding under the desks increases the risk of death. The existing desks designed for earthquake prevention are usually complex in design and are relatively bulky overall. There is not enough space for study and use, and the study and use are not comfortable. The use effect is poor and it is difficult to mass produce and put into use. Some earthquake-proof desks with simpler designs have poor supporting and protective strength and effect. At the same time, the existing earthquake-proof desks are only designed to increase the supporting strength. However, due to the collapse of buildings during an earthquake, a large amount of dust will be generated. Many victims will suffocate when inhaling a large amount of dust in a small space. The existing earthquake-proof desks are insufficient in dust-proof sealing. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a safe student desk with earthquake-resistant and risk-avoiding functions, which can assemble a secondary protection space in the original desk in a short period of time, thereby improving the comprehensiveness of protection and the dust-proof sealing of the secondary protection space, so as to solve the deficiencies in protection and use of the existing earthquake-resistant desks.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a safe student desk with earthquake resistance and risk avoidance, comprising a top plate and a plurality of leg assemblies symmetrically fixed on both sides of the bottom of the top plate, a primary protection space is formed between the bottom of the top plate and the plurality of leg assemblies, a storage structure is provided at the bottom of the top plate, a conversion protection mechanism is provided at the bottom of the storage structure, the conversion protection mechanism is provided with a supporting state and a protection state, the conversion protection mechanism is used for students to place learning tools in the supporting state, and the conversion protection mechanism is used to provide students with a secondary protection space in the protection state, the secondary protection space is located inside the primary protection space, storage baffles are provided on both sides of the storage structure, two groups of storage baffles are respectively fitted with the leg assemblies on both sides, the bottoms of the two groups of storage baffles are respectively connected with sealing side panels, the bottoms of the two groups of sealing side panels are connected with the bottom panels, the two groups of sealing side panels and the bottom panel respectively shield and seal the secondary protection space from both sides and the bottom;

[0006] The conversion protection mechanism comprises a first support plate, a second support plate and a cross bar, wherein a plurality of first movable sleeves are respectively provided at one end of the first support plate and the second support plate close to the cross bar, and the first support plate and the second support plate are respectively rotatably connected to the cross bar through a plurality of first movable sleeves, and the first support plate and the second support plate are symmetrically arranged along the cross bar, and the two ends of the cross bar are respectively fitted with the storage baffles on both sides, and a group of sleeves are respectively provided at one end of the first support plate and the second support plate away from the cross bar, and the two ends of the sleeve are respectively rotatably connected to a group of movable rods, and the movable rods are rotatably connected to the sleeves through the second movable sleeve, and a reinforcement rod assembly is arranged between the movable rods opposite to one side of the bottom of the first support plate and the second support plate, and the reinforcement rod assembly is used to support and reinforce the movable rods, the first support plate and the second support plate on both sides, and a group of dustproof assemblies are respectively arranged in the two groups of sleeves, and an emergency assembly is arranged on the side of the first support plate and the second support plate away from the top plate, and the emergency assembly is used to ventilate the secondary protection space;

[0007] Two groups of first support heads and two groups of first support rings are respectively arranged on opposite sides of the two groups of storage baffles, and the two groups of first support heads and the two groups of first support rings are used to support the transformation protection mechanism in a supporting state, and the two groups of first support heads are symmetrically arranged on both sides of the bottom of the storage baffle, and the first support ring is arranged in the middle of the bottom of the storage baffle, and the two groups of first support heads are respectively used to support the sleeves on the first support plate and the second support plate, and the first support ring is used to support the cross bar;

[0008] The plurality of leg assemblies include two groups of middle legs respectively arranged in the middle of both sides of the top plate, the tops of the two groups of middle legs are provided with connecting assemblies respectively passing through the two groups of storage baffles, the two groups of second support heads and two groups of second support rings are respectively provided on the opposite sides of the two groups of sealing side plates, the two groups of connecting assemblies are used to support the cross bar when the conversion protection mechanism is in the protection state, the two groups of second support heads are used to support the sleeve when the conversion protection mechanism is in the protection state, and the two groups of second support rings are used to support the bottom of the movable rod when the conversion protection mechanism is in the protection state, and when the conversion protection mechanism is in the protection state, the cross bar, the first support plate, the second support plate, the sleeve and the bottom of the movable rod constitute a secondary protection space.

[0009] Furthermore, first fixing heads are respectively provided at both ends of the cross bar, and the first fixing heads are respectively matched with the connecting assembly and the first supporting ring; buckle rings are respectively provided at both ends of the sleeve, and the buckle rings are respectively matched with the first supporting head and the second supporting head; a second fixing head is provided at the bottom of one side of the movable rod close to the sealing side plate, and the second fixing head is matched with the second supporting ring.

[0010] Furthermore, the connecting assembly includes a fixing seat and an elastic support sheet, the fixing seat is fixedly connected to the middle leg, the side of the fixing seat away from the middle leg and the side of the storage baffle away from the middle leg are located on the same plane, the elastic support sheets are provided in several groups, several groups of elastic support sheets are fixed in parallel on the top of the fixing seat and inclined toward the side away from the middle leg, and a slot is opened on the top of the elastic support sheet, which matches the first connecting head.

[0011] Further, the reinforcement rod assembly includes a first reinforcement rod, a second reinforcement rod, a third reinforcement rod and a fourth reinforcement rod, the first reinforcement rod and the second reinforcement rod are connected to the movable rod on one side of the bottom of the first support plate, the third reinforcement rod and the fourth reinforcement rod are connected to the movable rod on one side of the bottom of the second support plate, wherein the first reinforcement rod is rotatably connected to an end of the movable rod away from the sleeve, the second reinforcement rod is rotatably connected to an end of the movable rod close to the sleeve, the third reinforcement rod is rotatably connected to an end of the movable rod away from the sleeve, the fourth reinforcement rod is rotatably connected to an end of the movable rod close to the sleeve, and the ends of the first, second, third and fourth reinforcement rods away from the movable rod are connected to one point after being stretched out.

[0012] Furthermore, a storage groove is opened in the movable rod, and the storage groove is used to store the first reinforcement rod, the second reinforcement rod, the third reinforcement rod and the fourth reinforcement rod respectively.

[0013] Furthermore, a first connector is provided at one end of the first reinforcement rod away from the movable rod, a second connector and a first clamping ring are provided at one end of the second reinforcement rod away from the movable rod, a third connector and a second clamping ring are provided at one end of the third reinforcement rod away from the movable rod, and a fourth connector and a third clamping ring are provided at one end of the fourth reinforcement rod away from the movable rod. The second clamping ring matches the first connector, the first clamping ring matches the third connector, and the third clamping ring matches the second connector.

[0014] Furthermore, the emergency component includes a filter, a fan and a lithium battery. The fan and the filter are provided in two groups. The two groups of filters are respectively arranged in the middle position of the first support plate and the second support plate. The two groups of fans are respectively arranged on the side of the filter away from the top plate. The lithium battery is fixed on the side of the second support plate away from the top plate. The two groups of fans are respectively electrically connected to the lithium batteries.

[0015] Furthermore, the emergency component also includes a locator, and the locator is electrically connected to the lithium battery.

[0016] Furthermore, the dustproof assembly includes a dustproof cloth, a limit rod and a rotating shaft, the dustproof cloth is rolled up on the rotating shaft, the rotating shaft is arranged in a sleeve and rotatably connected to the sleeve, one end of the dustproof cloth extending out of the sleeve is connected to the limit rod, and a group of springs are respectively arranged at the connection between the two ends of the rotating shaft and the sleeve.

[0017] Furthermore, a pull block is fixed at the middle position of the limiting rod.

[0018] Beneficial effects of the present invention: The present invention can form a first-level protection space in a common sense through the combination of the top plate and the supporting legs, and can form a first-level protection. By adding a conversion protection mechanism, the conversion protection mechanism can be placed in a supporting state in daily learning use, and is used to place learning tools. A second-level protection space can be quickly assembled in an earthquake. This design can improve the effect of earthquake protection without affecting daily learning use.

[0019] When the protection mechanism of the present invention changes from a supporting state to a protecting state, the student only needs to push the cross bar upward from the bottom and make the cross bar snap into the connecting assembly, and the sleeve and the movable rod can automatically move to connect with the second supporting head and the second supporting ring under the action of gravity, and can quickly form a triangular tent-like structure to form a secondary protection space. The secondary protection space can improve the strength of the supporting protection and improve the protection effect;

[0020] The conversion protection mechanism of the present invention is added with a dustproof component, and the two sides of the conversion protection mechanism are connected with two sets of sealing side plates, and the bottom is connected with the bottom plate, so that the secondary protection space can be in a relatively sealed state to block the dust generated during the earthquake and prevent the dust from causing respiratory damage to the students taking refuge. At the same time, in conjunction with the emergency component, the emergency component can perform ventilation treatment in the secondary protection space by adding a fan and a filter to ensure the cleanliness of the air and the sufficiency of the oxygen in the secondary protection space, further improving the survival rate of the students taking refuge. At the same time, the dustproof cloth in the dustproof component can be stored in the sleeve, so that it can not affect the students' learning space when used for learning.

[0021] The present invention can reinforce the triangular tent-like structure supported by the movable rod, the first support plate and the second support plate by adding a reinforcing rod assembly, thereby further improving the protective performance of the support. At the same time, the reinforcing rod assembly can be stored in the movable rod through the storage groove, and can not affect the learning space of students during learning and use, thereby improving the protective performance while ensuring the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 is a side cross-sectional view of the present invention;

[0025] Figure 3 for Figure 2 A magnified view of middle;

[0026] Figure 4 is a connection diagram for connecting components;

[0027] Figure 5 is a schematic diagram of the structure of the connection components;

[0028] Figure 6 It is a structural schematic diagram of the protection mechanism when it is in the protection state;

[0029] Figure 7 for Figure 6 Enlarged view of middle B;

[0030] Figure 8 is a schematic diagram of the connection between the movable rod and the third reinforcement rod and the fourth reinforcement rod;

[0031] Fig. 9 This is a schematic diagram of the connection between the dustproof component and the sleeve;

[0032] Fig.10 for Fig. 9 Enlarged view of middle C;

[0033] Fig.11 It is a schematic diagram of the local connection of the reinforcement rod assembly;

[0034] Fig.12 is a partial structural diagram of the first reinforcement rod;

[0035] Fig.13 is a partial structural diagram of the second reinforcement rod;

[0036] Fig.14 is a partial structural diagram of the third reinforcement rod;

[0037] Fig.15 This is a partial structural diagram of the fourth reinforcement rod.

[0038] In the figure: 1, top plate; 2, leg assembly; 3, storage structure; 4, conversion protection mechanism; 5, sealing side plate; 6, bottom plate; 21, middle leg; 22, connecting assembly; 221, fixing seat; 222, elastic support sheet; 2222, slot; 31, storage baffle; 311, first support head; 312, first support ring; 41, first support plate; 42, second support plate; 43, emergency assembly; 44, cross bar; 45, sleeve; 46, movable rod; 47, reinforcement rod assembly; 48, dustproof assembly; 411, first movable sleeve; 431, filter; 432, fan; 433, lithium battery; 434, positioner; 441. first fixed head; 451. buckle; 461. second fixed head; 462. second movable sleeve; 463. storage groove; 471. first reinforcing rod; 472. second reinforcing rod; 473. third reinforcing rod; 474. fourth reinforcing rod; 481. dustproof cloth; 482. limit rod; 483. rotating shaft; 484. spring; 4821. pull-out block; 4711. first connecting head; 4721. second connecting head; 4722. first clamping ring; 4731. third connecting head; 4732. second clamping ring; 4741. fourth connecting head; 4742. third clamping ring; 51. second supporting head; 52. second supporting ring. DETAILED DESCRIPTION

[0039] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0040] See also Figure 1A safe student desk with earthquake resistance and risk avoidance comprises a top plate 1 and a plurality of leg assemblies 2 symmetrically fixed on both sides of the bottom of the top plate 1, a primary protection space is formed between the bottom of the top plate 1 and the plurality of leg assemblies 2, a storage structure 3 is arranged at the bottom of the top plate 1, a conversion protection mechanism 4 is arranged at the bottom of the storage structure 3, the conversion protection mechanism 4 is provided with a supporting state and a protection state, the conversion protection mechanism 4 is used for students to place learning tools in the supporting state, and the conversion protection mechanism 4 is used to provide students with a secondary protection space in the protection state, the secondary protection space is located inside the primary protection space, storage baffles 31 are respectively arranged on both sides of the storage structure 3, two groups of storage baffles 31 are respectively fitted with the leg assemblies 2 on both sides, the bottoms of the two groups of storage baffles 31 are respectively connected with sealing side plates 5, the bottoms of the two groups of sealing side plates 5 are connected with bottom plates 6, the two groups of sealing side plates 5 and the bottom plate 6 respectively shield and seal the secondary protection space from both sides and the bottom.

[0041] During daily learning and use, the conversion protection mechanism 4 is in a supporting state, which can provide a bottom supporting platform for the storage structure 3, on which students can place their learning tools. At the same time, the space between the bottom of the conversion protection mechanism 4 and the bottom plate 6 can be used for students to place their legs and feet, which is convenient for students' daily use and improves the feasibility of use.

[0042] See also Figure 1 , Figure 2 and Figure 6 The conversion protection mechanism 4 includes a first support plate 41, a second support plate 42 and a cross bar 44. The first support plate 41 and the second support plate 42 are respectively provided with a plurality of first movable sleeves 411 at one end close to the cross bar 44. The first support plate 41 and the second support plate 42 are respectively rotatably connected to the cross bar 44 through the plurality of first movable sleeves 411. The first support plate 41 and the second support plate 42 are respectively symmetrically arranged along the cross bar 44. The two ends of the cross bar 44 are respectively fitted with the storage baffles 31 on both sides. The first support plate 41 and the second support plate 42 are respectively provided with a group of sleeves 45 at one end away from the cross bar 44. The sleeves 45 A group of movable rods 46 are rotatably connected to the two ends respectively, and the movable rods 46 are rotatably connected to the sleeve 45 through the second movable sleeve 462. A reinforcement rod assembly 47 is arranged between the movable rods 46 opposite to the bottom side of the first support plate 41 and the second support plate 42. The reinforcement rod assembly 47 is used to support and reinforce the movable rods 46, the first support plate 41 and the second support plate 42 on both sides. A group of dustproof assemblies 48 are respectively arranged in the two groups of sleeves 45. An emergency assembly 43 is arranged on the side of the first support plate 41 and the second support plate 42 away from the top plate 1. The emergency assembly 43 is used to ventilate the secondary protection space.

[0043] When in the supporting state, the first support plate 41 and the second support plate 42 remain in a horizontal state. When in the protective state, the first support plate 41 and the second support plate 42 are rotated through the first movable sleeve 411 and the cross bar 44, so that the first support plate 41 and the second support plate 42 are supported as a triangular structure. The movable rod 46 is rotated to a position in the same plane as the first support plate 41 and the second support plate 42 through the second movable sleeve 462. An anti-slip gasket is added to the connection between the second movable sleeve 462 and the sleeve 45, which can increase the friction during rotation and ensure that the movable rod 46 can be retracted at the bottom of the first support plate 41 and the second support plate 42 in the supporting state. The inward force of the movable rod 46 can be supported by the reinforcement rod assembly 47. The dustproof assembly 48 can block the space between the two groups of movable rods 46 on one side of the first support plate 41 or the second support plate 42, so that the secondary protection space is in a relatively sealed state. The secondary protection space can be ventilated through the emergency assembly 43, and clean air can be added to the secondary protection space to ensure the oxygen content, thereby improving the comprehensiveness of protection.

[0044] See also Figure 1 and Figure 2 Two groups of first support heads 311 and two groups of first support rings 312 are respectively arranged on the opposite sides of the two groups of storage baffles 31. The two groups of first support heads 311 and the two groups of first support rings 312 are used to support the transformation protection mechanism 4 in a supporting state. The two groups of first support heads 311 are symmetrically arranged on both sides of the bottom of the storage baffle 31, and the first support ring 312 is arranged in the middle of the bottom of the storage baffle 31. The two groups of first support heads 311 are respectively used to support the sleeves 45 on the first support plate 41 and the second support plate 42, and the first support ring 312 is used to support the cross bar 44. This design is used to support the cross bar 44 and the sleeve 45 when the transformation protection mechanism 4 is in a supporting state.

[0045] See also Figure 1 and Figure 2The plurality of leg assemblies 2 include two sets of middle legs 21 respectively arranged in the middle of both sides of the top plate 1, the tops of the two sets of middle legs 21 are provided with connection assemblies 22 respectively passing through the two sets of storage baffles 31, and the two sets of sealing side plates 5 are respectively provided with two sets of second support heads 51 and two sets of second support rings 52 on the opposite sides thereof, the two sets of connection assemblies 22 are used to support the cross bar 44 when the protection mechanism 4 is in the protection state, the two sets of second support heads 51 are used to support the sleeve 45 when the protection mechanism 4 is in the protection state, and the two sets of second support rings 52 are used to support the movable rod 46 when the protection mechanism 4 is in the protection state. The bottom is supported. When the protection mechanism 4 is in the protection state, the cross bar 44, the first support plate 41, the second support plate 42, the sleeve 45 and the movable rod 46 form a secondary protection space below. When it is changed to the protection state, the cross bar 44 is pushed from the bottom to connect with the connecting component 22, the sleeve 45 is supported by the second support head 51, and the movable rod 46 is supported by the second support ring 52. At this time, the first support plate 41 and the second support plate 42 form a triangular tent structure, and the movable rod 46 is extended to the bottom of this structure. The triangular structure can increase the strength of the support and further improve the support and protection effect.

[0046] See also Figure 6 and Figure 7 The two ends of the cross bar 44 are respectively provided with a first fixed head 441, and the first fixed head 441 matches the connecting component 22 and the first supporting ring 312 respectively. The two ends of the sleeve 45 are respectively provided with a buckle ring 451, and the buckle ring 451 matches the first supporting head 311 and the second supporting head 51 respectively. The bottom of the movable rod 46 close to the sealing side plate 5 is provided with a second fixed head 461, and the second fixed head 461 matches the second supporting ring 52. This design is used to support the conversion protection mechanism 4 in the conversion state.

[0047] See 4 and Figure 5 The connecting component 22 includes a fixed seat 221 and an elastic support sheet 222, the fixed seat 221 is fixedly connected to the middle leg 21, the side of the fixed seat 221 away from the middle leg 21 and the side of the storage baffle 31 away from the middle leg 21 are located on the same plane, and a plurality of groups of elastic support sheets 222 are arranged, and a plurality of groups of elastic support sheets 222 are fixed in parallel to the top of the fixed seat 221 and are inclined toward the side away from the middle leg 21, and a slot 2222 is provided on the top of the elastic support sheet 222, and the slot 2222 matches the first connecting head 4711. When the cross bar 44 moves upward, when it moves from the fixed seat 221 to the direction of the elastic support sheet 222, the elastic support sheet 222 can be bent in the direction close to the middle leg 21. After continuing to move upward, the first fixed head 441 of the cross bar 44 is inserted into the slot 2222, and the elastic support sheet 222 is reset to achieve support for the cross bar 44.

[0048] See also Figure 2 and Figure 6 The reinforcement rod assembly 47 includes a first reinforcement rod 471, a second reinforcement rod 472, a third reinforcement rod 473 and a fourth reinforcement rod 474. The first reinforcement rod 471 and the second reinforcement rod 472 are connected to the movable rod 46 on one side of the bottom of the first support plate 41, and the third reinforcement rod 473 and the fourth reinforcement rod 474 are connected to the movable rod 46 on one side of the bottom of the second support plate 42, wherein the first reinforcement rod 471 is rotatably connected to an end of the movable rod 46 away from the sleeve 45, the second reinforcement rod 472 is rotatably connected to an end of the movable rod 46 close to the sleeve 45, the third reinforcement rod 473 is rotatably connected to an end of the movable rod 46 away from the sleeve 45, and the fourth reinforcement rod 474 is rotatably connected to an end of the movable rod 46 close to the sleeve 45, and the ends of the first reinforcement rod 471, the second reinforcement rod 472, the third reinforcement rod 473 and the fourth reinforcement rod 474 away from the movable rod 46 are connected to one point after being stretched out.

[0049] See also Figure 8 A storage groove 463 is opened in the movable rod 46, and the storage groove 463 is used to accommodate the first reinforcement rod 471, the second reinforcement rod 472, the third reinforcement rod 473 and the fourth reinforcement rod 474 respectively. The first reinforcement rod 471 and the second reinforcement rod 472 are stored in one movable rod 46, and the third reinforcement rod 473 and the fourth reinforcement rod 474 are stored in another movable rod 46.

[0050] See also Figure 11-Figure 15 The first reinforcing rod 471 is provided with a first connector 4711 at one end away from the movable rod 46, the second reinforcing rod 472 is provided with a second connector 4721 and a first snap ring 4722 at one end away from the movable rod 46, the third reinforcing rod 473 is provided with a third connector 4731 and a second snap ring 4732 at one end away from the movable rod 46, the fourth reinforcing rod 474 is provided with a fourth connector 4741 and a third snap ring 4742 at one end away from the movable rod 46, the second snap ring 4732 matches the first connector 4711, the first snap ring 4722 matches the third connector 4731, and the third snap ring 47 42 matches the second connecting head 4721. During reinforcement assembly, the second snap ring 4732 of the third reinforcement rod 473 is inserted into the first connecting head 4711, the first snap ring 4722 of the second reinforcement rod 472 is inserted into the third connecting head 4731, and the third snap ring 4742 of the fourth reinforcement rod 474 is inserted into the second connecting head 4721 to achieve convenient assembly. The first reinforcement rod 471, the second reinforcement rod 472, the third reinforcement rod 473 and the fourth reinforcement rod 474 are gathered at one point, which can support and reinforce the movable rod 46, the first support plate 41 and the second support plate 42 on both sides.

[0051] See also Figure 2 and Figure 3The emergency component 43 includes a filter 431, a fan 432 and a lithium battery 433. Two groups of fans 432 and filters 431 are provided. The two groups of filters 431 are respectively arranged in the middle position of the first support plate 41 and the second support plate 42, and the two groups of fans 432 are respectively arranged on the side of the filter 431 away from the top plate 1. The lithium battery 433 is fixed on the side of the second support plate 42 away from the top plate 1. The two groups of fans 432 are electrically connected to the lithium battery 433 respectively. A first switch is provided on the fan 432. After the fan 432 is turned on by the first switch, air can be sucked in from the filter 431, and the air is filtered through the filter 431. The filtered air can supplement the oxygen content of the secondary protection space.

[0052] The emergency component 43 also includes a locator 434, which is electrically connected to the lithium battery 433. A second switch is provided on the locator 434. By turning on the second switch, the locator 434 can send GPS location information to facilitate rescue by rescue personnel.

[0053] See also Fig. 9 and Fig.10 The dustproof assembly 48 includes a dustproof cloth 481, a limiting rod 482 and a rotating shaft 483. The dustproof cloth 481 is rolled up on the rotating shaft 483. The rotating shaft 483 is arranged in the sleeve 45 and is rotatably connected to the sleeve 45. One end of the dustproof cloth 481 extending out of the sleeve 45 is connected to the limiting rod 482. A group of springs 484 are respectively arranged at the connection between the two ends of the rotating shaft 483 and the sleeve 45. A pulling block 4821 is fixed at the middle position of the limiting rod 482. The dustproof cloth 481 is pulled out by the pulling block 4821. The pulling out of the dustproof cloth 481 drives the rotating shaft 483 to rotate, and then the limiting rod 482 is clamped at the bottom of the movable rod 46 to fix the pulled out dustproof cloth 481. In daily use, the spring 484 can drive the rotating shaft 483 to rotate and store the dustproof cloth 481 in the sleeve 45 without affecting normal learning and use.

[0054] Working principle: During daily learning and use, the first support plate 41 and the second support plate 42 are in a horizontal support state, the reinforcement rod assembly 47 is stored in the storage groove 463 of the movable rod 46, and the movable rod 46 is retracted at the bottom of the first support plate 41 and the second support plate 42. The first fixed heads 441 at both ends of the cross bar 44 are supported by the first support ring 312, and the buckles 451 at both ends of the sleeve 45 are supported by the first support head 311, so that the first support plate 41 and the second support plate 42 form a horizontal support structure, which can form a storage structure 3 between the top plate 1, and the space between the first support plate 41 and the second support plate 42 and the bottom plate 6 can be vacated, which is convenient for students to put their legs and feet and can be used conveniently.

[0055] When encountering an earthquake, the students get under the first support plate 41 and the second support plate 42, sit or squat on the bottom plate 6, push the cross bar 44 upward to make the first fixed head 441 snap into the connecting assembly 22, and the first support plate 41 and the second support plate 42 rotate downward through the first movable sleeve 411 due to gravity. After the first support plate 41 and the second support plate 42 rotate, the buckles 451 at both ends of the sleeve 45 are supported by the second support head 51, and the movable rod 46 is rotated to make the second fixed head 461 supported by the second support ring 52, so as to assemble a secondary protection space in a short time, and then the reinforcement rod assembly 47 is pulled out to make the first reinforcement rod 471 and the second reinforcement rod 471 be supported. The second reinforcement rod 472, the third reinforcement rod 473 and the fourth reinforcement rod 474 are supported to one point to support and reinforce the movable rod 46, the first support plate 41 and the second support plate 42, and then the dustproof cloth 481 is pulled out from the sleeve 45 through the pull-out head, and the limit rod 482 is inserted into the bottom of the movable rod 46. The dustproof cloth 481 is pulled out and fixed, and then the fan 432 is turned on. The fan 432 can inhale air from the filter 431, and the filter 431 can filter the air to replenish clean air in the secondary protection space to ensure sufficient oxygen. The positioning information sent by the locator 434 can promptly inform the rescue personnel of their location.

[0056] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A safe student desk with earthquake resistance and risk avoidance, comprising a top plate (1) and a plurality of leg assemblies (2) symmetrically fixed on both sides of the bottom of the top plate (1), characterized in that: A primary protection space is formed between the bottom of the top plate (1) and the plurality of leg assemblies (2). A storage structure (3) is provided at the bottom of the top plate (1). A conversion protection mechanism (4) is provided at the bottom of the storage structure (3). The conversion protection mechanism (4) has a supporting state and a protection state. The conversion protection mechanism (4) is used for students to place learning tools in the supporting state. The conversion protection mechanism (4) is used to provide students with a secondary protection space in the protection state. The secondary protection space is located inside the primary protection space. Storage baffles (31) are provided on both sides of the storage structure (3). Two groups of storage baffles (31) are respectively fitted with the leg assemblies (2) on both sides. The bottoms of the two groups of storage baffles (31) are respectively connected to sealing side plates (5). The bottoms of the two groups of sealing side plates (5) are connected to the bottom plates (6). The two groups of sealing side plates (5) and the bottom plate (6) respectively shield and seal the secondary protection space from both sides and the bottom. The conversion protection mechanism (4) comprises a first support plate (41), a second support plate (42) and a cross bar (44); a plurality of first movable sleeves (411) are respectively arranged at one end of the first support plate (41) and the second support plate (42) close to the cross bar (44); the first support plate (41) and the second support plate (42) are respectively rotatably connected to the cross bar (44) through the plurality of first movable sleeves (411); the first support plate (41) and the second support plate (42) are symmetrically arranged along the cross bar (44); the two ends of the cross bar (44) are respectively fitted with the storage baffles (31) on both sides; a group of sleeves (45) are respectively arranged at one end of the first support plate (41) and the second support plate (42) away from the cross bar (44); the sleeves A group of movable rods (46) are rotatably connected to the two ends of the tube (45), and the movable rods (46) are rotatably connected to the sleeve (45) through a second movable sleeve (462). A reinforcement rod assembly (47) is arranged between the movable rods (46) on one side of the bottom of the first support plate (41) and the second support plate (42) that are opposite to each other. The reinforcement rod assembly (47) is used to support and reinforce the movable rods (46) on both sides, the first support plate (41) and the second support plate (42). A group of dustproof assemblies (48) are respectively arranged in the two groups of sleeves (45). An emergency assembly (43) is arranged on the side of the first support plate (41) and the second support plate (42) that is away from the top plate (1). The emergency assembly (43) is used to ventilate the secondary protection space. Two groups of first support heads (311) and two groups of first support rings (312) are respectively arranged on opposite sides of the two groups of storage baffles (31). The two groups of first support heads (311) and the two groups of first support rings (312) are used to support the transformation protection mechanism (4) in a supporting state. The two groups of first support heads (311) are symmetrically arranged on both sides of the bottom of the storage baffle (31). The first support ring (312) is arranged in the middle of the bottom of the storage baffle (31). The two groups of first support heads (311) are respectively used to support the sleeves (45) on the first support plate (41) and the second support plate (42). The first support ring (312) is used to support the cross bar (44). The plurality of leg assemblies (2) include two groups of middle legs (21) respectively arranged in the middle of both sides of the top plate (1); the tops of the two groups of middle legs (21) are provided with connection assemblies (22) respectively passing through the two groups of storage baffles (31); the two groups of sealing side plates (5) are respectively provided with two groups of second support heads (51) and two groups of second support rings (52) on opposite sides; the two groups of connection assemblies (22) are used to support the cross bar (44) when the conversion protection mechanism (4) is in the protection state; the two groups of second support heads (51) are used to support the sleeve (45) when the conversion protection mechanism (4) is in the protection state; the two groups of second support rings (52) are used to support the bottom of the movable rod (46) when the conversion protection mechanism (4) is in the protection state; When the structure (4) is in a protective state, the cross bar (44), the first support plate (41), the second support plate (42), the sleeve (45) and the lower part of the movable rod (46) form a secondary protective space; the two ends of the cross bar (44) are respectively provided with first fixed heads (441), and the first fixed heads (441) are matched with the connecting assembly (22) and the first support ring (312) respectively; the two ends of the sleeve (45) are respectively provided with buckles (451), and the buckles (451) are matched with the first support head (311) and the second support head (51) respectively; the bottom of the movable rod (46) close to the sealing side plate (5) is provided with a second fixed head (461), and the second fixed head (461) is matched with the second support ring (52); The emergency component (43) comprises a filter (431), a fan (432) and a lithium battery (433); the fan (432) and the filter (431) are provided in two groups; the two groups of filters (431) are respectively provided at the middle position of the first support plate (41) and the second support plate (42); the two groups of fans (432) are respectively provided on a side of the filter (431) away from the top plate (1); the lithium battery (433) is fixed on a side of the second support plate (42) away from the top plate (1); and the two groups of fans (432) are respectively electrically connected to the lithium battery (433).

2. A safe student desk with earthquake resistance and risk avoidance according to claim 1, characterized in that: The connecting assembly (22) comprises a fixing seat (221) and an elastic support sheet (222); the fixing seat (221) is fixedly connected to the middle leg (21); a side of the fixing seat (221) away from the middle leg (21) and a side of the storage baffle (31) away from the middle leg (21) are located on the same plane; a plurality of groups of elastic support sheets (222) are provided; the plurality of groups of elastic support sheets (222) are fixed in parallel to the top of the fixing seat (221) and are inclined toward the side away from the middle leg (21); a slot (2222) is provided at the top of the elastic support sheet (222); the slot (2222) matches the first connecting head (4711).

3. A safe student desk with earthquake resistance and risk avoidance according to claim 1, characterized in that: The reinforcing rod assembly (47) comprises a first reinforcing rod (471), a second reinforcing rod (472), a third reinforcing rod (473) and a fourth reinforcing rod (474), wherein the first reinforcing rod (471) and the second reinforcing rod (472) are connected to the movable rod (46) at one side of the bottom of the first support plate (41), and the third reinforcing rod (473) and the fourth reinforcing rod (474) are connected to the movable rod (46) at one side of the bottom of the second support plate (42), wherein the first reinforcing rod (471) and the movable rod (46) are away from the sleeve (4 5), the second reinforcement rod (472) is rotationally connected to one end of the movable rod (46) close to the sleeve (45), the third reinforcement rod (473) is rotationally connected to one end of the movable rod (46) away from the sleeve (45), the fourth reinforcement rod (474) is rotationally connected to one end of the movable rod (46) close to the sleeve (45), and the first reinforcement rod (471), the second reinforcement rod (472), the third reinforcement rod (473) and the fourth reinforcement rod (474) are connected to one point at one end away from the movable rod (46) after being stretched out.

4. A safe student desk with earthquake resistance and risk avoidance according to claim 3, characterized in that: The movable rod (46) is provided with a storage groove (463), and the storage groove (463) is used to store the first reinforcement rod (471), the second reinforcement rod (472), the third reinforcement rod (473) and the fourth reinforcement rod (474) respectively.

5. A safe student desk with earthquake resistance and risk avoidance according to claim 3, characterized in that: The first reinforcing rod (471) is provided with a first connector (4711) at one end away from the movable rod (46); the second reinforcing rod (472) is provided with a second connector (4721) and a first snap ring (4722) at one end away from the movable rod (46); the third reinforcing rod (473) is provided with a third connector (4731) and a second snap ring (4732) at one end away from the movable rod (46); the fourth reinforcing rod (474) is provided with a fourth connector (4741) and a third snap ring (4742) at one end away from the movable rod (46); the second snap ring (4732) matches the first connector (4711); the first snap ring (4722) matches the third connector (4731); and the third snap ring (4742) matches the second connector (4721).

6. A safe student desk with earthquake resistance and risk avoidance according to claim 1, characterized in that: The emergency component (43) further comprises a locator (434), and the locator (434) is electrically connected to the lithium battery (433).

7. A safe student desk with earthquake resistance and risk avoidance according to claim 1, characterized in that: The dustproof assembly (48) comprises a dustproof cloth (481), a limiting rod (482) and a rotating shaft (483); the dustproof cloth (481) is rolled up on the rotating shaft (483); the rotating shaft (483) is arranged in the sleeve (45) and is rotatably connected to the sleeve (45); one end of the dustproof cloth (481) extending out of the sleeve (45) is connected to the limiting rod (482); and a group of springs (484) are respectively arranged at the connection between the two ends of the rotating shaft (483) and the sleeve (45).

8. A safe student desk with earthquake resistance and risk avoidance according to claim 7, characterized in that: A pull block (4821) is fixed at the middle position of the limiting rod (482).

Images