CN109099775B

CN109099775B - Shield with U-shaped protective device

Info

Publication number: CN109099775B
Application number: CN201811085688.2A
Authority: CN
Inventors: 曾国庆
Original assignee: Changle Branch Company Fuzhou Xinxiaxin Computer Co ltd
Current assignee: Linyi Gaoxin Tap Water Co ltd
Priority date: 2017-03-05
Filing date: 2017-03-05
Publication date: 2020-09-15
Anticipated expiration: 2037-03-05
Also published as: CN106895743A; CN109099775A; CN106895743B

Abstract

The invention discloses a shield with a U-shaped protection device, which comprises a shield body, a handheld handle, a protection pad and an elbow locking and fixing device, wherein the shield body comprises a shield body front surface and a shield body back surface, the protection pad is connected with the shield body back surface, the handheld handle and the elbow locking and fixing device penetrate through the protection pad to be connected with the shield body, the shield body front surface is provided with the protection device, the protection device extends towards the shield front surface direction along a side point intersecting line, the protection device comprises a first bending edge and a second bending edge, the first bending edge, the second bending edge and side edges form the U-shaped protection device, and the top end of the second bending edge is provided with a barb; the shield body still includes shield head and shield tail, shield head and shield tail all are the type of falling V, the type of falling V bottom of shield tail is provided with indent semicircle limit.

Description

Shield with U-shaped protective device

The application is named as: the utility model provides a shield, application date of area direction safeguard function do: 03 and 05 in 2017, and the application numbers are: 201710125745.4 patent application for inventions.

Technical Field

The invention relates to a shield, in particular to a police shield with a guiding protection function.

Background

The shield is an ancient defensive weapon, and the soldier can effectively shield the weapon of enemies and protect the life safety of the soldier. In ancient combat, a shield is a weapon with very important tactical application and has been developed to date no matter in the history of China, ancient Greece or ancient Roman. Although the refulgence of the shield in military use is no longer present today, the shield will glow new lives in the modern police field. Under the large atmosphere that the world situation tends to be peaceful at present, the possibility of large-scale wars is not high, and the individual criminal activities in the country are frequently happened, so the personal safety problem faced by the police officer is the first time, and at the moment, the police shield plays a very important role in the field of single-police protection.

The shield used in the field of modern police is called as an effective tool for embodying police civilization law enforcement in the face of harassing crowds and low-intensity conflicts in police law enforcement.

When being attacked, the modern police shield is mainly attacked by the following attack modes:

1. attack by mechanical objects such as sticks and knives: when criminals practice such attacks, the criminals typically hold sticks, knives, etc. to flap, chop, or poke the shield. The shield surface in the shield in the prior art is usually a plane shield surface and a circular arc shield surface. If the front surface of the shield is a plane, when the shield is attacked, the force of the stick can be mostly supported by the shield and conducted to the arms of law enforcement officers, so that the shield is easily injured due to excessive force, and in a more serious case, the shield can be out of hand and lose protection; if the shield openly is the arc surface, when the shield suffered this type of attack, the stick can slide along the shield face, can the certain impact force of effectual uninstallation, nevertheless because the shield surface does not have the guide effect, so the stick can be irregular slide along the shield surface, is unfavorable for law enforcement personnel to judge how to counterattack and pay for the instrument on the one hand, and on the other hand, also can cause the personnel's injury of law enforcement in coordination to injure.

2. Attack by throwing objects such as flying stones, bricks and the like: when criminals carry out such attacks, the criminals generally adopt a direct throwing means to throw the criminals to law enforcement through flying stones and bricks. In the face of such attacks, shields in the prior art adopted by law enforcement officers can generally resist the injury of throwing objects to shield holding personnel, but because the surfaces of the shields are flat surfaces or arc surfaces, throwing objects can irregularly slide on the shields, and the turning throwing objects can easily cause the injury of other cooperative law enforcement officers.

3. Combustible and corrosive liquid attack: when criminals carry out such attacks, combustible and corrosive liquids are generally thrown to law enforcement persons by means of direct throwing. In the face of such attacks, shields in the prior art adopted by law enforcement officers can generally resist direct injury of the throwing liquid to shield holding personnel, but because the surfaces of the shields are flat surfaces or arc surfaces, the throwing liquid can irregularly splash and change directions on the shields, and the throwing liquid is extremely easy to cause damage to other cooperative law enforcement officers.

In addition, the shield in the prior art also has insufficient capability when being used as a weapon to attack criminals, most of the shields are simple protective instruments, and the attack capability needs to be enhanced to realize the combined action of attack and defense.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a shield with a U-shaped protection device, which can effectively solve the problems in the background art.

In order to solve the technical problems, the invention provides the following technical scheme:

a shield with a U-shaped protection device comprises a shield body, a handheld handle, a protection pad and an elbow locking and fixing device, wherein the shield body comprises a front shield body and a back shield body, the protection pad is connected with the back shield body, the handheld handle and the elbow locking and fixing device penetrate through the protection pad to be connected with the shield body, the front transverse section of the shield body comprises a top point and two side points, the top point forms a top point intersecting line, the side points form a side point intersecting line, the top point forms a side edge from the side point, the height of the top point intersecting line is gradually reduced and extends to the side point intersecting line to form a side face, the shield body is axially symmetrical along the top point intersecting line, and the front shield body is an outer convex arc face, an inverted V-shaped face or an arc face; the side surface is provided with a corrugated surface consisting of continuous guide grooves, and the guide grooves transversely extend from the top point intersection line to the side point intersection line; the shield body openly is provided with protector, protector follows the setting is extended to the shield front direction to the side point line of intersect, protector contains first hem, first hem with V type protector is constituteed to the side.

The utility model provides a preferred technical scheme, wherein, protector still includes the second limit of bending, and first limit of bending and second limit of bending and side constitute U type protector.

In a preferred embodiment, the second bent edge top is provided with a barb, that is, the barb is arranged on the U-shaped protection device

The utility model provides an optimal technical scheme, wherein, the shield body still includes shield head and shield tail, shield head and shield tail all are the type of falling V.

According to the preferable technical scheme, the inverted V-shaped bottom of the shield tail is provided with an inwards concave semicircular edge.

In a preferred embodiment, the guide groove extends obliquely downward from the vertex intersection line to the side point intersection line, and the guide groove is parallel to the direction of the inverted V-shaped shield head.

According to a preferable technical scheme, the guide groove is a V-shaped groove or a U-shaped groove.

The utility model provides an optimal technical scheme, wherein, the shield body still includes shock-absorbing material, shock-absorbing material sets up between the shield body is positive and the shield body back, the shield body openly adopts carbon fiber material, the shield body back adopts thermosetting plastic material.

The invention has the following beneficial effects:

1. on one hand, the shield has good protection effect on the attacks of thrown objects, sticks, liquid and the like, and the striking objects are guided to slide along the front surface of the shield body by the corrugated surface formed by the continuous guide grooves, so that the sliding distance is effectively increased, the impact force on shield holding personnel is reduced, the attacking objects are blocked or caught by the protection device and finally slide to the ground along the direction from the shield head to the shield tail, the damage to the shield holding personnel and cooperative personnel is effectively avoided, and meanwhile, the shield holding personnel can well judge the movement track of the struck objects and perform corresponding treatment;

2. on the other hand, the shield also has good attack performance, the U-shaped or V-shaped guide grooves can rebound and throw objects to attack the riot, so that the safety guarantee is improved for law enforcement personnel, meanwhile, the multidimensional V-shaped inclined surface can realize the comprehensive coverage and the comprehensive protection of the front of the shield, and the good defense performance and the attack capability are considered.

3. Meanwhile, the shield can effectively unload the impact force on shield holding personnel when the shield is attacked by the guide groove of the outer convex surface and the multi-layer shock absorption.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

In the drawings:

FIG. 1 is a front view of a shield according to embodiment 1 of the present invention;

FIG. 2 is a perspective view of a shield according to embodiment 1 of the present invention;

FIG. 3 is a bottom view of the shield according to embodiment 1 of the present invention;

fig. 4 is a schematic diagram of a rebound track of a U-shaped guide groove of a shield according to embodiment 1 of the present invention;

fig. 5 is a diagram illustrating the bounce trajectory of the V-shaped guide groove of the shield according to embodiment 1 of the present invention;

fig. 6 is a schematic diagram of a motion trajectory of an attacking object according to embodiment 1 of the present invention;

fig. 7 is a schematic diagram of the rebound motion trajectory of the shield V-shaped shield apparatus according to embodiment 1 of the present invention;

FIG. 8 is a bottom view of the shield according to embodiment 2 of the present invention;

fig. 9 is a schematic diagram of a rebound motion trajectory of the U-shaped guard according to embodiment 2 of the present invention;

FIG. 10 is a bottom view of the shield with barbs as described in example 2 of the invention;

fig. 11 is a schematic diagram of the rebound motion trajectory of the U-shaped barb guard according to embodiment 2 of the present invention;

FIG. 12 is a perspective view of a shield according to embodiment 3 of the present invention;

reference numbers in the figures: 1. a shield body; 2. a pad; 3. the elbow locks the fixing device; 4. a hand-held handle; 100. the front side of the shield body; 101 a guide groove; 102. a shield head transition surface; 103. a shield tail transition surface; 104. vertex intersection lines; 105. intersecting lines of side points; 106. a side surface; 110. a shield head; 120. a shield tail; 121. bevel edge of shield tail; 122. a concave semicircular edge; 130. a guard; 131. a first folded edge; 132. second bending edges; 133. a barb; 140. the back of the shield body; 150a, a first motion trajectory; 150b, a second motion trajectory; 150c, a third motion trajectory; 151. a fourth motion trajectory; 153a, a motion track of the V-shaped protection device; 153b, a U-shaped protection device movement track; 153c, U-shaped barb protection device movement locus.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example 1: as shown in fig. 1-3, a shield with a U-shaped protection device includes a shield body 1, a handheld handle 4, a protection pad 2 and an elbow locking fixing device 3, where the shield body 1 includes a shield body front 100 and a shield body back 140, the protection pad 2 is connected to the shield body back 140, the handheld handle 4 and the elbow locking fixing device 3 pass through the protection pad 2 to be connected to the shield body 1, a front 100 transverse section of the shield body includes a vertex and two side points, the vertex forms a vertex intersecting line 104, the side points form a side point intersecting line 105, the vertex intersecting line 105 is gradually reduced in height and extends to a side point intersecting line 110 to form a side surface 106, the shield body front 100 is axially symmetrical along the vertex intersecting line 104, and the shield body front 100 is an outward convex surface, an inverted V-shaped surface or an arc surface; the outer convex surface can be an inverted V-shaped surface or a circular arc surface, and can also be an outer convex trapezoid or other outer convex shapes. The convex surface can effectively unload the attacking force when being attacked, and shield-keeping personnel are protected.

The side surface 106 is provided with a corrugated surface consisting of continuous guide grooves 101, and the guide grooves 101 transversely extend from a top point intersection line 104 to a side point intersection line 105; a guard 130 extends along the side point intersection 105 in the direction of the front of the shield. The guard 130 includes a first bent edge 131, and the first bent edge 131 and the side 100a form a V-shaped guard.

Preferably, the guide groove 101 is a V-shaped guide groove or a U-shaped guide groove, the side surface 106 is a V-shaped or U-shaped corrugated surface formed by the continuous guide grooves 101, and the V-shaped or U-shaped corrugated surface facing downward forms a finished protective surface on the front surface 100 of the shield body, so that various attacks can be more effectively dealt with. The fold plane of the V-shape may be completely continuous or may be discontinuous, as will be appreciated by those skilled in the art. The continuous V-shaped or U-shaped wrinkled surfaces on the left side and the right side are attractive as a whole and have deterrent force. When the shield is attacked by a stick, a stone and other throwing objects or liquid, the shield can be beneficial to forming a multi-dimensional inclined plane on the front side of the shield, so that the shield can realize comprehensive coverage and comprehensive protection.

As shown in fig. 3-6, when encountering a throwing attack, the throwing firstly contacts with any one of two side surfaces 106 of the front surface 100 of the shield body, and since the side surfaces 106 are provided with a corrugated surface consisting of continuous guide grooves 101, and the guide grooves 101 transversely extend on the outer convex surface along a vertex intersection line 104 towards a side point intersection line 105, it is obvious that the vertex intersection line 104 is higher than the side point intersection line 105, and the end of the vertex intersection line 104 of the guide grooves 101 is higher than the end of the side point intersection line 105 of the guide grooves 101, the guide grooves 101 have the function of guiding the throwing along the vertex intersection line 104 towards the side point intersection line 105. Thus, due to different impact inertias and contact angles, the following may occur:

1. a rebound attack mode: as shown in fig. 4-5, a shield keeper faces the guide groove 101 of the shield to a throwing object according to the movement track of the throwing object, so that the falling point of the throwing object is vertical to the shield, in this case, the throwing object directly bounces back to the front of the shield body along the curved surface of the guide groove 101 to play a role in frightening and striking the rioter, and as the guide groove 101 is V-shaped or U-shaped, as shown by a U-shaped groove bounce track 152a and a V-shaped groove bounce track 152b, the shield keeper can use the effect of the throwing object colliding with the guide groove to bounce to the front to counter the rioter after training, so as to deter the rioter from attacking.

2. Unloading mode: as shown in fig. 6-7, the shield person tilts the guide channel 101 of the shield against the projectile according to the trajectory of the projectile's motion, the projectile sliding along the guide channel 101 from the apex intersection 104 to the side intersection 105, wherein a first motion trajectory 150a, similar to a sine wave, is a common way of moving the projectile in the guide channel 101. Of course, the first motion profile 150a may be different due to the difference in the shape of the outer convex surface, the shape of the guide groove, and the shape, force, and contact position of the throwing, for example, the first motion profile 150a of the sine wave may be the second motion profile 150b of the triangular wave or the third motion profile 150c of the fold wave line.

Taking now as an example the throwing object slides along said first motion trajectory 150a, the throwing object slides along said first motion trajectory 150a and collides with the first bending edge 131 of said guard 130 at the front of the shield body. Since the protection device 130 is perpendicular to the back 140 of the shield body and the first bending edge 131 and the side edge 100a form a V-shaped protection device, the thrown object slides to the ground from the inner side of the first bending edge 131 along the measuring point intersection line 105 from the shield head 110 to the shield tail 120 after collision; or as shown in fig. 7, the throwing object bounces from the first bending edge 131 to the front of the shield body front 100 after collision, forming a bounce direction similar to the bounce track 153a of the V-shaped protection device; or the shield body collides with the guide groove 101 on the front surface of the shield body again after rebounding, rebounds to the front of the front surface 100 of the shield body after colliding again or slides repeatedly along the guide groove 101, and finally slides to the ground along the measuring point intersection line 105 from the shield head 110 to the shield tail 120 along the inner side of the first bending edge 131. The throwing is similar to the first motion profile 150a along the second motion profile 150b and will not be described in detail herein.

As shown in fig. 6, taking the example that the throwing object slides along the third motion track 150c, the throwing object slides on the corrugated surface formed by the continuous guide groove 101 along the third motion track 150c and collides with the first bending edge 131 of the guard 130 on the front surface of the shield body. Because the fold surface formed by the guide groove 101 can greatly increase the length of the sliding track, and meanwhile, the protection device 130 is perpendicular to the back 140 of the shield body, and the first bending edge 131 and the side edge 100a form a V-shaped protection device, the speed of the thrown object sliding on the fold surface can be rapidly reduced, and the thrown object can slide to the ground from the inner side of the first bending edge 131 along the measuring point intersection line 105 from the shield head 110 to the shield tail 120 after collision.

Due to the guiding effect of the guide groove 101, the throwing object slides along the friction between the first motion track 150a, the second motion track 150b or the third motion track 150c and the surface of the shield, the speed is gradually reduced, and the impact force is reduced, because the motion track of the sine wave or the fold wave line of the throwing object is far larger than that of the shield without the guide groove, the action of better reducing the impact force can be obtained, shield personnel can be more effectively protected, and meanwhile, because the first bending edge 131 of the protection device 130 is perpendicular to the back surface 140 of the shield, the range of the first bending edge 131 which is rebounded and washed out by the throwing object can be limited to be in front of the front surface of the shield body, and the safety of cooperative personnel and the throwing object can be effectively protected.

As shown in fig. 6, when a stick or liquid attacks, the stick or liquid first contacts any point on two sides 106 of the front face 100 of the shield body, and since the continuous guide groove 101 is provided on the side 106 and the guide groove 101 extends transversely on the outer convex surface along the vertex intersection line 104 toward the side intersection line 105, it is clear that the vertex intersection line 104 is higher than the side intersection line 105, and the vertex intersection line 104 end of the guide groove 101 is higher than the side intersection line 105 end of the guide groove 101, the guide groove 101 has the function of guiding the cast along the vertex intersection line 104 toward the side intersection line 105. Therefore, the liquid will either splash directly perpendicular to the surface of the guide groove 101 and bounce back to the front of the shield body due to the impact inertia, or will slide along the guide groove 101 from the vertex intersection line 104 to the side intersection line 105, while the stick will slide along the guide groove 101 from the vertex intersection line 104 to the side intersection line 105 due to the constant force of the attacker, wherein the fourth motion trajectory 160, which is similar to the bending line, is a common way of moving the liquid or stick in the guide groove 101. Of course, due to the difference in the shape of the outer convex surface and the guide groove and the difference in the shape, force and contact position of the throwing, the fourth motion trajectory 151 may be different, and a third motion trajectory 150c like a corrugated wave line or other motion trajectories may occur. The liquid or stick slides along said fourth movement path 151 and collides with the first bending edge 131 of said shield 130 on the front side of the shield body. Because the protection device 130 is perpendicular to the back 140 of the shield body and the first bending edge 131 and the side edge 100a form a V-shaped protection device, the stick or the liquid slides down to the ground along the intersection line 105 of the measuring points at the inner side of the first bending edge 131 after collision, and due to the guiding effect of the guide groove 101, the stick or the liquid gradually slows down and reduces the impact force along the friction between the second motion track 151 and the surface of the shield, and finally unloads the attacked object.

On one hand, because the motion track of the stick or the liquid is far larger than that of a shield without the guide groove 101 and the protective device 130, better impact force alleviation effect can be obtained; on the other hand, shield-holding personnel can better judge the movement tracks of the liquid and the sticks, and the shield-holding personnel are prevented from being injured; meanwhile, as the first bending edge 131 of the protection device 130 is perpendicular to the shield back 140, the first bending edge 131 can be prevented from being washed out by liquid or a stick, and the safety of cooperative personnel and the safety of the cooperative personnel can be effectively protected.

Example 2:

as shown in fig. 8 to 11, this embodiment is an improvement of the protection device 130 based on embodiment 1, in which the protection device 130 further includes a second bending edge 132, and the first bending edge 131, the second bending edge and the side edge 100a form a U-shaped protection device. Further, the top end of the second bent edge is provided with a barb, that is, the barb 133 is arranged on the U-shaped protection device.

A capture mode: specifically, the shield holding personnel make the guide groove 101 of the shield face the projectile at a certain inclination angle according to the trajectory of the projectile, and now, taking the case that the projectile slides along the first trajectory 150a, the projectile slides along the first trajectory 150 and collides with the first bending edge 131 of the protection device 130 on the front side of the shield body. Because the protection device 130 further comprises the second bending edge 132, the first bending edge 131, the second bending edge and the side edge 100a form a U-shaped protection device, the thrown object slides to the ground from the inner side of the first bending edge 131 along the measuring point intersection line 105 from the shield head 110 to the shield tail 120 after collision; or the thrown object rebounds along the first bending edge 131 to the second bending edge 132 such as the motion track 153b of the U-shaped guard after collision, rebounds again to the guide groove 101 on the front side 100 of the shield body, repeatedly slides, and finally slides to the ground along the inner measuring point intersection line 105 of the first bending edge 131 from the shield head 110 to the shield tail 120. Meanwhile, the second bending edge 132 is provided with the barb 133, and the throwing object is limited in the U-shaped protection device after rebounding to the barb 133 after rebounding to the second bending edge 132, such as the motion track 153c of the U-shaped barb protection device, so that the throwing object can be further prevented from popping out of the front face of the shield body, and the effect of catching the throwing object can be achieved. For a stick, the U-shaped guard may serve a similar guard catching function.

Compared with the embodiment 1 and the embodiment 2, the U-shaped protection device or the U-shaped barb protection device can further reduce the impact force by multiple rebounding of the U-shaped protection device, can play a role in catching a throwing object, and reduces the risk of accidental injury caused by rebounding of the throwing object.

Example 3:

as shown in fig. 7, the present embodiment is an improvement of the shield body 1 based on embodiment 1. The shield body 1 further comprises a shield head 110 and a shield tail 120, and the shield head 110 and the shield tail 120 are of inverted V shapes. Preferably, the inverted V-shaped bottom of the shield tail 120 is provided with a concave semicircular edge 122. The front face 100 of the shield body further comprises a shield tail transition face 103 and a shield head transition face 102, the folds formed by the guide grooves 101 extend towards the shield head 110 and intersect with the shield head transition face 102, and the folds formed by the guide grooves 101 extend towards the shield tail 120 and intersect with the shield tail transition face 102. The transition surfaces are arranged between the shield head 110 and the shield tail 120 and the fold surface, so that the strength of the shield head 110 and the shield tail 120 can be enhanced, and the manufacturing difficulty can be reduced. The inverted V-shaped shield head 110 can be used as an attack apparatus to attack criminals, and the inverted V-shaped shield tail can also be used as an attack apparatus to subdue criminals, so that the function similar to an explosion-proof fork is achieved.

Preferably, the guide groove 101 extends obliquely downward from the vertex intersection line 104 to the side point intersection line 105, and the guide groove 101 is parallel to the inverted V-shaped shield head 110. Since the guide groove 101 extends obliquely downward from the vertex intersection line 104 to the side point intersection line 105, the sliding direction of the attacking object can be guided better. Therefore, the inclined downward guide grooves can effectively guide the striking object to slide down along the downward directions of the two sides of the shield, so that law enforcement personnel can better judge the motion track of the striking object, the speed of the striking object can be delayed, the impact force can be effectively buffered, and the injury to shield holding personnel and cooperative personnel is avoided.

Preferably, the shield body front 100 and the shield body back 140 can be formed by injection molding of high-strength thermosetting plastic; or the front surface 100 of the shield body is made of carbon fiber, and the back surface 140 of the shield body is made of thermosetting plastic by injection molding, so that the shield is light in overall weight and convenient to carry. The shield body 1 further comprises a damping material, the damping material is arranged between the front surface 100 of the shield body and the back surface 140 of the shield body, partial impact force is buffered by the V-shaped guide groove, the damping material slows down partial impact force, and a multi-level damping system is formed together with the back surface 140 of the shield body and the protection pad 2, so that impact load can be effectively reduced, the impact force is relieved, and the protection of law enforcement personnel is improved.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a take U type protector's shield, includes shield body, handheld handle, protection pad, elbow locking fixing device, the shield body includes that the shield body is positive and the shield body back, the protection pad with shield body back connection, handheld handle with elbow locking fixing device passes protection pad and this body coupling of shield, its characterized in that: the transverse cross section of the front surface of the shield body comprises a vertex and two side points, the vertex forms a vertex intersecting line, the side points form a side point intersecting line, the height of the side point intersecting line is gradually reduced and extends to the side point intersecting line to form a side surface, the front surface of the shield body is axially symmetrical along the vertex intersecting line, and the front surface of the shield body is an outer convex cambered surface; the side surface is provided with a corrugated surface consisting of continuous guide grooves, and the guide grooves transversely extend from the top point intersection line to the side point intersection line; the shield comprises a shield body and is characterized in that a protection device is arranged on the front face of the shield body, the protection device extends along the intersection line of the side points to the front face direction of the shield, the protection device comprises a first bending edge and a second bending edge, the first bending edge, the second bending edge and the side edges form a U-shaped protection device, and the top end of the second bending edge is provided with a barb; the shield body further comprises a shield head and a shield tail, the shield head and the shield tail are of an inverted V shape, and the bottom of the inverted V shape of the shield tail is provided with a concave semicircular edge; the shield comprises a capture mode and a bounce attack mode; the shield includes a capture mode: when the shield is attacked by throwing matters or liquid, the attacking matters orderly slide along the direction of the guide groove, are captured by the U-shaped protection device and slide to the ground along the direction from the shield head to the shield tail in the U-shaped protection device; the rebound attack mode: a shield operator vertically and oppositely faces the guide groove to the throwing object according to the throwing curve of the throwing object to ensure that the falling point of the throwing object is vertical relative to the shield, and the throwing object directly rebounds to the front of the front side of the shield body along the curved surface of the U-shaped guide groove to reversely attack an exerciser;

the guide groove extends downwards from the vertex intersection line to the side point intersection line in an inclined mode, and the guide groove is parallel to the direction of the inverted V-shaped shield head.

2. Shield with U-shaped protection device according to claim 1, characterized in that the guide groove is a V-shaped groove or a U-shaped groove.

3. The shield with the U-shaped protection device according to claim 1, wherein the shield body further comprises a shock-absorbing material, the shock-absorbing material is arranged between the front surface of the shield body and the back surface of the shield body, the front surface of the shield body is made of carbon fiber material, and the back surface of the shield body is made of thermosetting plastic material.