A security shield with strong buffering function

Abstract

The present application belongs to the security tool technical field, especially to a security shield with strong buffering function, comprising: a shield frame, which constitutes the main body architecture of the shield, a first-level protection buffer plate slidingly arranged at the opening of the shield frame, a second-level protection air bag installed on the inner side of the first-level protection buffer plate, a third-level protection force relief plate installed in the shield frame on the side of the metal plate facing the first-level protection buffer plate, a control terminal elastically clamped on the metal plate on the back side of the shield frame, and arranged at one end of the arm fixing piece, the control terminal being used for controlling the start and stop of the moving power mechanism and the exhaust valve. The shield has an automatic buffering strength adjustment function, ensures effective use of resources, has high safety, intelligent control and convenient operation.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of security tools, and particularly relates to a security protection shield with strong buffering function. BACKGROUND

[0002] During the patrol of security personnel, the protection shield is a commonly used protection equipment, which can resist the attack of hard objects, blunt objects and unknown liquids in the process of handling emergencies, and provides important safety protection for police and security personnel.

[0003] The existing patent application No. 2022100109066 discloses a security protection shield, which comprises a shield body, a cavity is formed in the inner wall of the shield body, a metal plate is fixedly connected to the inner wall of the cavity, a plurality of sliding grooves are formed in the side wall of the shield body, air holes are formed in the bottom of the sliding grooves, the air holes are communicated with the cavity, a sliding rod is arranged in the sliding groove, one end of the sliding rod penetrates the shield body and is arranged in the cavity, and the other end of the sliding rod penetrates the shield body and is arranged outside the shield body. By cooperating the sliding groove, the sliding rod and the sliding ring, when the sliding rod is impacted by a blunt object, the sliding rod moves, the moving sliding ring extrudes the air in the sliding groove, thereby buffering the impact force of the blunt object. By cooperating the shell, the soft sleeve and the fixing assembly, when in use, the user's arm can be inserted into the soft sleeve, the contact area of the user's arm is increased, and the comfort of the user is improved. Through the analysis of the protection shield, it is found that the main way of buffering when in use is to reduce the impact force by cooperating the movement of the sliding rod and the air in the sliding groove, thereby realizing the function of buffering protection. However, such buffering effect can only cope with small impact force, when facing some strong impact, the air pressure buffering between the sliding rod and the sliding groove cannot change the direction of the impact force, and in most cases, it can only be directly borne, cannot buffer and disperse the force, resulting in reduced buffering effect and reduced protection ability. Furthermore, whether the above protection shield or the existing common protection shield does not have the function of adjusting the buffering force when in use, that is, it cannot be adjusted to the best protection state in advance according to the impact force to be received, resulting in that some protection shields, if the buffering function is strong, are applied in general situations, causing waste of resources, or if the buffering function is general, are applied in some high-impact situations, causing poor buffering protection effect, that is, having great limitations when in use.

[0004] Therefore, in view of the above problems, the technical scheme provides a security protection shield with strong buffering function. SUMMARY

[0005] The purpose of the embodiment of the application is to provide a security protection shield with strong buffering function, which aims to solve the above problems.

[0006] The application is achieved by a structure diagram of a security protection shield with strong buffering function, which comprises a protection shield frame constituting the main framework of the protection shield, the front of the protection shield frame is provided in an open shape, the back is provided with a layer of metal plate with arc-shaped cross section, a group of arm fixing members are installed in the middle of the side of the metal plate away from the front of the protection shield frame, the protection shield frame is bound to the user's arm by the arm fixing members for control and use;

[0007] The first protection buffer plate is slidably arranged at the opening of the protection shield frame and is located at the outermost position of the protection shield frame, and is used for contact relief of the incoming impact force. A group of moving power mechanisms are arranged at the upper and lower parts of the two sides of the first protection buffer plate and the inner side of the protection shield frame. The four groups of moving power mechanisms are synchronously operated to jointly control the movement of the first protection buffer plate along the opening of the protection shield frame, and adjust the degree of extension or storage of the first protection buffer plate. When facing some small impact force, the first protection buffer plate is directly retracted to the inside of the protection shield frame (i.e. the outermost side of the first protection buffer plate is consistent with the outside of the opening of the protection shield frame), and the single first protection buffer plate can fully relieve the impact force.

[0008] The second protection air bag is installed inside the first protection buffer plate and moves synchronously with the first protection buffer plate. The second protection air bag is provided with an inflation assembly corresponding to each moving power mechanism at the side of the first protection buffer plate. The inflation assembly is mechanically connected with the moving power mechanism. When the moving power mechanism drives the first protection buffer plate to move outward, the inflation assembly is synchronously driven to inflate the second protection air bag, thereby realizing the second air cushion function. The bottom of the second protection air bag is provided with an exhaust valve. When the moving power mechanism controls the first protection buffer plate to move back and store, the inflation assembly also operates, but the exhaust valve is synchronously started to exhaust at this time. Under the movement and extrusion of the first protection buffer plate to the second protection air bag and the exhaust of the exhaust valve, the air intake speed of the inflation assembly is much lower than the exhaust speed. After the first protection buffer plate is completely stored, the gas in the second protection air bag is also synchronously exhausted, and the second protection air bag is stored inside the first protection buffer plate.

[0009] The third protection force relief plate is installed inside the protection shield frame on the side of the metal plate facing the first protection buffer plate. The third protection force relief plate comprises two groups of elastically connected rubber force relief ball plates. A plurality of uniformly distributed rubber buffer balls are rollingly arranged between the rubber force relief ball plates. Arc-shaped grooves are formed in the side walls of the two rubber force relief ball plates corresponding to the rubber buffer balls. The rubber buffer balls are rollingly arranged between the two grooves, and then the rubber material of the rubber buffer balls and the rubber force relief ball plates is matched. When the rubber force relief ball plates are impacted, the rubber buffer balls in the rolling state decompose the impact force in multiple directions, disperse the force, and then the rubber material decomposes the decomposed force, thereby realizing the function of the third force relief cushion.

[0010] The control terminal is elastically clamped on the metal plate on one side of the back of the protective shield frame and is arranged at one end of the arm fixing piece, so that the hand bound on the protective shield frame can directly control the control terminal to operate, and the control terminal is used for controlling the start and stop of the moving power mechanism and the exhaust valve, that is, in the actual use process, the number of buffer levels to be used is adjusted at any time, and the intelligent buffer function is improved.

[0011] The security protective shield with strong buffering function provided by the application directly controls the control terminal to control the operation of the moving power mechanism and the exhaust valve, and the user selects the corresponding number of buffers to resist the impact force according to the analysis of the impact force to be arrived and the situation under the state, when the impact force is small, the first protective buffer plate is directly used to buffer the impact force, and the first protective buffer plate can fully resolve the impact force, when the impact force is large, the moving power mechanism is started to drive the first protective buffer plate to extend outward, and the inflation assembly is controlled to inflate the second protective air bag inside the first protective buffer plate to form a second gas buffer, then the second protective air bag contacts the third protective unloading plate after inflation, at this time, the first protective buffer plate, the second protective air bag and the third protective unloading plate are in contact with each other, the first protective buffer plate pre-resolves most of the impact force, then the impact force is resolved twice by the second protective air bag, and finally the impact force is resolved by the rubber buffer ball and the rubber unloading ball plate in the third protective unloading plate, thereby realizing the adjustable protective shield with strong buffering function. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a first perspective structural schematic view of the security protective shield with strong buffering function.

[0013] Figure 2 It is a second perspective structural schematic view of the security protective shield with strong buffering function.

[0014] Figure 3 It is a bottom view structural schematic view of the security protective shield with strong buffering function.

[0015] Figure 4 It is a partial sectional view structural schematic view of the security protective shield with strong buffering function.

[0016] Figure 5 It is a partial sectional view structural schematic view of the security protective shield with strong buffering function. Figure 4 It is an enlarged structural schematic view of A.

[0017] Figure 6 It is a top view internal structural schematic view of the first protective buffer plate in the security protective shield with strong buffering function.

[0018] Figure 7 For Figure 6 The enlarged structural schematic view of the middle D.

[0019] Figure 8 The rear view structural schematic view of the first-level protection buffer plate of the security shield with strong buffering function.

[0020] Figure 9 For Figure 8 The enlarged structural schematic view of the middle C.

[0021] Figure 10 For Figure 2 The enlarged structural schematic view of the middle B.

[0022] Figure 11 The structural schematic view of the third-level protection force relieving plate of the security shield with strong buffering function.

[0023] In the drawings: shield frame 10, arm binding belt 11, protection observation plate 12, clamping groove 13, clamping strip 14, first-level protection buffer plate 15, second-level protection air bag 16, third-level protection force relieving plate 17, exhaust valve 18, rubber buffer strip 19, sliding block 20, sliding groove 21, air bag positioning groove 22, flame-retardant waterproof layer 23, foam filling layer 24, hard plate layer 25, elastic buffer 26, buffer cylinder 27, telescopic rod 28, limiting block 29, spring 30, control terminal 31, control button 32, elastic connection wire 33, terminal installation groove 34, clamping hole 35, clamping pin 36, air bag inflation valve port 37, adhesive fixing piece 38, telescopic air inlet pipe 39, inflation pump 40, piston rod 41, L-shaped connecting rod 42, lead screw 43, nut 44, small bevel gear 45, large bevel gear 46, spur gear 47, rack 48, lifting slide 49, rubber buffer ball 50, ball groove 51, rubber force relieving ball plate 52. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0025] The specific implementation of the present application is described in detail below in combination with specific examples.

[0026] As Figure 1 , 2, 3, 4, 8, 11, a structure of a security shield with strong buffering function provided by the embodiment of the application, comprising: a shield frame 10, which constitutes the main structure of the shield, the front of the shield frame 10 is provided in an open shape, and a metal plate with an arc-shaped cross section is installed on the back, a group of arm fixing parts are installed on the middle of the side of the metal plate away from the front of the shield frame 10, and the shield frame 10 is bound to the arm of the user through the arm fixing parts for control and use;

[0027] The first-level protection buffer plate 15 is slidably arranged at the opening of the shield frame 10 and is arranged at the outermost position of the shield frame 10, and is used for contact relief of the incoming impact force, a group of moving power mechanisms are arranged at the upper and lower parts of the two sides of the first-level protection buffer plate 15 and the inner side of the shield frame 10, the four groups of moving power mechanisms are synchronously operated, and the degree of extension or storage of the first-level protection buffer plate 15 is adjusted along the inside and outside of the opening of the shield frame 10, that is, when facing some small impact force, the first-level protection buffer plate 15 is directly retracted to the inside of the shield frame 10 (that is, the outermost side of the first-level protection buffer plate 15 is consistent with the outside of the opening of the shield frame 10), and the impact force can be fully relieved by using a single first-level protection buffer plate 15;

[0028] The second-level protection air bag 16 is installed and arranged inside the first-level protection buffer plate 15, the second-level protection air bag 16 moves synchronously with the first-level protection buffer plate 15, the second-level protection air bag 16 is provided with an inflation assembly corresponding to each group of moving power mechanisms at the side of the first-level protection buffer plate 15, the inflation assembly is mechanically connected with the moving power mechanism, that is, when the moving power mechanism drives the first-level protection buffer plate 15 to move outward, the inflation assembly is synchronously driven to inflate the second-level protection air bag 16, so as to realize the second-level gas buffering function, the bottom of the second-level protection air bag 16 is provided with an exhaust valve 18, when the moving power mechanism controls the first-level protection buffer plate 15 to move back and store, the inflation assembly also operates, but at this time the exhaust valve 18 is synchronously started to exhaust, under the movement and extrusion of the first-level protection buffer plate 15 to the second-level protection air bag 16 and the exhaust of the exhaust valve 18, the air intake speed of the inflation assembly is much lower than the exhaust speed, after the first-level protection buffer plate 15 is completely stored, the gas in the second-level protection air bag 16 is also synchronously exhausted, and the second-level protection air bag 16 is stored inside the first-level protection buffer plate 15;

[0029] The third protection force relief plate 17 is installed inside the protective shield frame 10 on the side of the metal plate facing the first protection buffer plate 15, and comprises two groups of elastically connected rubber force relief ball plates 52. A plurality of uniformly distributed rubber buffer balls 50 are arranged to roll between the rubber force relief ball plates 52. Arc-shaped ball grooves 51 are formed in the side walls of the two rubber force relief ball plates 52 corresponding to the rubber buffer balls 50. The rubber buffer balls 50 are arranged to roll between the two ball grooves 51, and then cooperate with the rubber material of the rubber buffer balls 50 and the rubber force relief ball plates 52. When the rubber force relief ball plates 52 are impacted, the impact force is decomposed in multiple directions by the rubber buffer balls 50 in the rolling state, and then the decomposed force is dispersed and then relieved by the rubber, thereby achieving the function of three-stage force relief and buffer.

[0030] The control terminal 31 is elastically clamped on the metal plate on the back side of the protective shield frame 10 and is arranged at one end of the arm fixing member, so as to be directly controlled by the hand of the user on the protective shield frame 10. The control terminal 31 is used to control the start and stop of the mobile power mechanism and the exhaust valve 18, that is, in actual use, the number of buffer stages to be used is adjusted at any time to improve the intelligent adjustment of the buffer function.

[0031] When in use, the user's arm is connected to the back of the protective shield frame 10 through the arm fixing member, and then the protective shield frame 10 is moved and used through the arm control. Then the control terminal 31 arranged on one side is controlled by the hand connected to the protective shield frame 10, and the mobile power mechanism and the exhaust valve 18 are operated through the control terminal 31. The user selects the corresponding number of buffers to resist the force according to the analysis of the coming impact force and the situation under the condition, and directly uses the first protection buffer plate 15 to buffer the small impact force. The impact force can be fully resolved by using the first protection buffer plate 15. When the impact force is large, the mobile power mechanism is started to drive the first protection buffer plate 15 to extend outward, and the inflation assembly is controlled to quickly inflate the second protection air bag 16 inside the first protection buffer plate 15 to form a second gas buffer. Then the second protection air bag 16 expands and contacts the third protection force relief plate 17. At this time, the first protection buffer plate 15, the second protection air bag 16, and the third protection force relief plate 17 are in contact with each other. The first protection buffer plate 15 pre-relieves most of the impact force, and then the second protection air bag 16 relieves it again. Finally, the impact force in the third protection force relief plate 17 is decomposed and buffered by the rubber buffer balls 50 and the rubber force relief ball plates 52, and finally the impact force is fully resolved, thereby ensuring the effective protection of the user on the back of the protective shield frame 10.

[0032] In the embodiment of the present application, in order to reduce the impact force of the contact with the user's arms and limbs, a layer of cushion pad is laid on the side of the metal plate facing the user, and the arm fixing member comprises a plurality of equally spaced arm straps 11, one side of the arm strap 11 is fixed on the metal plate, and the arm is bound by the cooperation between the plurality of arm straps 11, thereby keeping the stable operation of the protective shield frame 10; the top of the first protective buffer plate 15 is detachably mounted with a protective observation plate 12, the protective observation plate 12 is made of bulletproof glass material, so that it provides safe observation function for the user, the bottom of the protective observation plate 12 is provided with a clamping strip 14, the top of the first protective buffer plate 15 is provided with a clamping groove 13 corresponding to the clamping strip 14, and the clamping strip 14 is clamped in the clamping groove 13, thereby keeping the detachable connection of the protective observation plate 12 and the first protective buffer plate 15;

[0033] Referring to Figure 10 , the control terminal 31 comprises a control button 32 arranged on the front side, one side of the top of the control button 32 is connected with a metal plate fixed on the back of the protective shield frame 10 through an elastic connecting wire 33, the elastic connecting wire 33 is respectively electrically connected with the moving power mechanism and the exhaust valve 18 towards the inside of the protective shield frame 10, that is, the function of controlling the operation of the exhaust valve 18 and the moving power mechanism by operating the control button 32 is realized, the top end of the elastic connecting wire 33 is provided with a terminal mounting groove 34 on the corresponding metal plate, the terminal mounting groove 34 is provided with a clamping hole 35 at four corners, and the control button 32 is provided with a clamping pin 36 on the corresponding back sidewall, the clamping pin 36 is clamped in the clamping hole 35, thereby the control button 32 can be detachably mounted on the metal plate, so as to facilitate the dismounting, use and storage of the control button 32.

[0034] In one example of the present application, two sliding blocks 20 are mounted on the upper and lower sides of the first protective buffer plate 15, a sliding groove 21 is formed on the inner wall of the protective shield frame 10 corresponding to the sliding block 20, the sliding block 20 slides along the inside of the sliding groove 21, and then cooperates with the drive of the moving power mechanism to control the stable transfer of the first protective buffer plate 15 along the opening inside and outside of the protective shield frame 10;

[0035] Referring to Figure 1 , 6, 7, the outermost side of the first protection buffer board 15 is installed with multiple rubber buffer strips 19 from top to bottom in parallel. The first arriving impact force is alleviated by the elastic material of the rubber buffer strip 19. A fire-retardant waterproof layer 23 is installed inside the rubber buffer strip 19. The fire-retardant waterproof layer 23 is used to prevent open flames or liquids from penetrating into the first protection buffer board 15 along the rubber buffer strip 19, which may cause serious damage to the entire device and the user behind the device. A foam filling layer 24 is filled inside the fire-retardant waterproof layer 23. A hard plate layer 25 is installed inside the foam filling layer 24. The hardness of the hard plate layer 25 keeps the first protection buffer board 15 stable under normal circumstances. Multiple groups of elastic buffer pieces 26 are evenly installed between the hard plate layer 25 and the innermost side of the first protection buffer board 15. The elastic buffer pieces 26 provide the last layer of buffer for the inside of the first protection buffer board 15.

[0036] The elastic buffer piece 26 includes two connecting blocks installed between the hard plate layer 25 and the innermost side of the first protection buffer board 15. A telescopic rod 28 is installed on one side of the connecting block on the hard plate layer 25. A limiting block 29 is installed at the bottom end of the telescopic rod 28. The limiting block 29 is placed in a buffer cylinder 27 fixed at the other side of the connecting block. The end of the limiting block 29 placed in the buffer cylinder 27 is elastically connected with a spring 30. The telescopic rod 28 is stretched and retracted by the buffering action of the spring 30. Multiple telescopic rods 28 provide the last layer of buffer for the inside of the first protection buffer board 15.

[0037] Referring to Figure 8 、 9 A gas bag positioning groove 22 is installed inside the first protection buffer board 15 on one side of the second protection air bag 16. The second protection air bag 16 is adhesively fixed on the inner wall of the gas bag positioning groove 22 by multiple adhesive fixing pieces 38. When the second protection air bag 16 is in a non-inflatable state, it is stored inside the gas bag positioning groove 22. The exhaust valve 18 is arranged on the gas bag positioning groove 22 below the second protection air bag 16. The outer end of the exhaust valve 18 directly penetrates through the protective shield frame 10 and communicates with the outside. The adhesive fixing piece 38 can be generally provided as a strong adhesive piece, which can be stably connected to the gas bag positioning groove 22 without damaging the second protection air bag 16. The second protection air bag 16 has the same material as the common safety air bag and has sufficient protection and buffering capacity.

[0038] Referring to Figure 4 、 5, 9, as a preferred embodiment of the application, the moving power mechanism includes a rack 48 mounted on the side wall of the first protective buffer plate 15, one side of the rack 48 is engaged with a spur gear 47, one side of the spur gear 47 is connected with a servo motor electrically connected with the control terminal 31, four groups of servo motors operate synchronously, respectively control the corresponding spur gear 47 to rotate drive the rack 48 engaged with it to move, thereby automatically control the first protective buffer plate 15 to be placed inside and outside the protective shield frame 10 shift;

[0039] The inflation assembly includes an airbag inflation valve 37 opened in the edge of the second protective airbag 16, the outer end of the airbag inflation valve 37 is connected with a telescopic air inlet pipe 39, the end of the telescopic air inlet pipe 39 is connected with an inflation pump 40, the bottom of the inflation pump 40 is fixed inside the protective shield frame 10 through a support rod, and the side of the inflation pump 40 corresponds to the side wall of the first protective buffer plate 15 is provided with a lifting slide 49, the lifting slide 49 is provided so that the inflation pump 40 does not hinder the first protective buffer plate 15 when moving, the side of the inflation pump 40 facing the outside is connected with a piston rod 41 in a telescopic manner, the end of the piston rod 41 is connected with a nut 44 through an L-shaped connecting rod 42, the middle of the nut 44 is threadedly connected with a lead screw 43, the nut 44 is provided with a guide device for limiting its rotation (the guide device is a common limiting part in the nut and lead screw transmission mechanism, so it will not be described here), one end of the lead screw 43 is connected with a small helical gear 45, one side of the small helical gear 45 is vertically engaged with a large helical gear 46, the side of the large helical gear 46 away from the lead screw 43 is fixed with the side wall of the spur gear 47 through a connecting rod, that is, when the servo motor drives the spur gear 47 to rotate and controls the movement of the first protective buffer plate 15, under the engagement of the large helical gear 46 and the small helical gear 45, the lead screw 43 is driven to rotate, then the nut 44 on the lead screw 43 is controlled to move back and forth, thereby controlling the piston rod 41 to move continuously in the inflation pump 40 under the connection of the L-shaped connecting rod 42, thereby inflating the second protective airbag 16 quickly under the connection of the telescopic air inlet pipe 39;

[0040] It is worth noting that since the distance of the outward movement of the rack 48 driven by the spur gear 47 is limited, it is necessary to control the inflation pump 40 to inflate the second protective airbag 16 quickly within the limited movement distance, and it is necessary to ensure that the nut 44 operates a sufficient number of times. Therefore, by vertically engaging the large helical gear 46 with the small helical gear 45, the number of rotation periods of the small helical gear 45 is maximized within the limited rotation stroke of the large helical gear 46, and then four groups of inflation pumps 40 are operated together to ensure sufficient and rapid inflation of the second protective airbag 16;

[0041] The telescopic inflation of the inflation pump 40 and the piston rod 41 is similar to the existing inflation device, so it will not be described here;

[0042] The positioning of the above mobile power mechanism and the components of the inflation assembly is at the connection between the primary protection buffer plate 15 and the protection shield frame 10, so the positioning of the components can be set by corresponding supports, which will not be described in detail here.

[0043] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A security shield having a strong buffering function, characterized by, The application relates to a protective shield, which comprises the following components: a protective shield frame (10) which constitutes the main framework of the protective shield, the front of the protective shield frame (10) being provided with an opening, and a metal plate with an arc-shaped cross section being arranged on the back of the protective shield frame (10); a first protective buffer plate (15) which is arranged at the opening of the protective shield frame (10) and is located at the outermost position of the protective shield frame (10), and a group of moving power mechanisms are arranged on the upper and lower parts of the two sides of the first protective buffer plate (15) and the inner side of the protective shield frame (10), four groups of moving power mechanisms are synchronously operated, and the four groups of moving power mechanisms jointly control the movement of the first protective buffer plate (15) along the opening of the protective shield frame (10) and adjust the extension or storage degree of the first protective buffer plate (15); a second protective air bag (16) which is arranged on the inner side of the first protective buffer plate (15) and synchronously moves with the first protective buffer plate (15), the second protective air bag (16) is provided with an inflating assembly corresponding to each moving power mechanism on the side of the first protective buffer plate (15), the inflating assembly is mechanically connected with the moving power mechanism, the bottom of the second protective air bag (16) is provided with an exhaust valve (18), the exhaust valve (18) exhausts, the inflating speed of the inflating assembly is lower than the exhaust speed under the movement extrusion of the first protective buffer plate (15) on the second protective air bag (16) and the exhaust of the exhaust valve (18), the gas in the second protective air bag (16) is synchronously exhausted after the first protective buffer plate (15) is completely stored, and the second protective air bag (16) is stored in the inner side of the first protective buffer plate (15); a third protective force relieving plate (17) which is arranged in the protective shield frame (10) on the side of the metal plate facing the first protective buffer plate (15), the third protective force relieving plate (17) comprises two groups of elastically connected rubber force relieving ball plates (52), a plurality of uniformly distributed rubber buffer balls (50) are arranged between the two groups of rubber force relieving ball plates (52) and roll, arc-shaped ball grooves (51) are formed in the side walls of the two rubber force relieving ball plates (52) corresponding to the rubber buffer balls (50), the rubber buffer balls (50) are arranged between the two ball grooves (51) and roll, and the rubber buffer balls (50) and the rubber force relieving ball plates (52) are made of rubber, so that the impact force is decomposed in multiple directions and dispersed when the rubber force relieving ball plates (52) are impacted; and a control terminal (31) which is elastically clamped on the metal plate on the back side of the protective shield frame (10) and is arranged at one end of the arm fixing part, the control terminal (31) is used for controlling the start and stop of the moving power mechanism and the exhaust valve (18). ​ ​ ​ ​ ​ The moving power mechanism comprises a rack (48) installed on the side wall of the first protection buffer plate (15), one side of the rack (48) is engaged with a spur gear (47), one side of the spur gear (47) is connected with a servo motor electrically connected with the control terminal (31), four groups of servo motors are synchronously operated, and correspondingly control the rotation of the spur gear (47) and the movement of the rack (48) engaged with the spur gear (47); The inflation assembly comprises an air bag inflation valve (37) formed in the edge of the second protection air bag (16), the outer end of the air bag inflation valve (37) is connected with a telescopic air inlet pipe (39), the end of the telescopic air inlet pipe (39) is connected with an inflation pump (40), the bottom of the inflation pump (40) is fixed in the inside of the protection shield frame (10) through a support rod, the inflation pump (40) is provided with a lifting slide (49) corresponding to the side wall of the first protection buffer plate (15) on one side, the side of the inflation pump (40) facing the outside is connected with a piston rod (41) which is telescopically connected, the end of the piston rod (41) is connected with a nut (44) through an L-shaped connecting rod (42), the middle of the nut (44) is threadedly connected with a lead screw (43), the nut (44) is provided with a guide device for limiting its rotation, one end of the lead screw (43) is connected with a small helical gear (45), one side of the small helical gear (45) is vertically engaged with a large helical gear (46), and the side of the large helical gear (46) away from the lead screw (43) is fixedly connected with the side wall of the spur gear (47) through a connecting rod.

2. The security shield with strong buffering function according to claim 1, characterized in that, The metal plate is provided with a layer of cushion pad on the side facing the user, and the arm fixing part comprises a plurality of equally spaced arm straps (11) fixed on the metal plate on one side.

3. The security shield with strong buffering function according to claim 2, characterized in that, The first protection buffer plate (15) is detachably provided with a protection observation plate (12) on the top, the protection observation plate (12) is made of bulletproof glass material, and the bottom of the protection observation plate (12) is provided with a clamping strip (14), the top of the corresponding first protection buffer plate (15) is provided with a clamping groove (13), and the clamping strip (14) is clamped in the clamping groove (13).

4. The security shield with strong buffering function according to claim 3, characterized in that, The control terminal (31) comprises a control button (32) arranged on the front side, the top of the control button (32) is connected with a metal plate fixed on the back of the protection shield frame (10) through an elastic connecting wire (33), the elastic connecting wire (33) is electrically connected with the moving power mechanism and the exhaust valve (18) in the inside of the protection shield frame (10), respectively, a terminal mounting groove (34) is formed in the metal plate corresponding to the top end of the elastic connecting wire (33), a clamping hole (35) is formed in the four corners of the inside of the terminal mounting groove (34), a clamping pin (36) is arranged on the back side wall of the control button (32) corresponding to the clamping hole (35), and the clamping pin (36) is clamped in the clamping hole (35).

5. The security shield with strong buffering function according to claim 4, characterized in that, Two sliding blocks (20) are arranged on the upper and lower sides of the first protection buffer plate (15), a sliding groove (21) is formed in the inner wall of the protection shield frame (10) corresponding to the sliding block (20), and the sliding block (20) slides along the inside of the sliding groove (21).

6. The security shield with strong buffering function according to claim 5, characterized in that, The outermost side of the primary protection buffer plate (15) is installed with multiple rubber buffer strips (19) from top to bottom in parallel, the inner side of the rubber buffer strip (19) is installed with a layer of flame-retardant waterproof layer (23), the inner side of the flame-retardant waterproof layer (23) is filled with a foam filling layer (24), the inner side of the foam filling layer (24) is installed with a layer of hard plate layer (25), and multiple groups of elastic buffer pieces (26) are uniformly installed and arranged between the hard plate layer (25) and the innermost side of the primary protection buffer plate (15).

7. The security shield with strong buffering function according to claim 6, characterized in that, The elastic buffer piece (26) comprises two connecting blocks installed between the hard plate layer (25) and the innermost side of the primary protection buffer plate (15), the connecting block on the hard plate layer (25) is installed with a telescopic rod (28), the bottom end of the telescopic rod (28) is installed with a limiting block (29), the limiting block (29) is arranged in a buffer cylinder (27) fixed at the other connecting block, and the end of the limiting block (29) arranged in the buffer cylinder (27) is elastically connected with a spring (30).

8. The security shield with strong buffering function according to claim 7, characterized in that, A gas bag positioning groove (22) is installed in the primary protection buffer plate (15) on one side of the secondary protection air bag (16), the secondary protection air bag (16) is adhesively fixed on the inner wall of the gas bag positioning groove (22) through multiple adhesive fixing pieces (38) on the side of the gas bag positioning groove (22), the exhaust valve (18) is arranged on the gas bag positioning groove (22) on the lower side of the secondary protection air bag (16), and the outer end of the exhaust valve (18) directly penetrates through the protection shield frame (10) and communicates with the outside.

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