JP2009281596A - Bullet stopping device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve use efficiency of a trap sheet material by reducing maintenance load by improvement on damage of the trap sheet in a bullet stopping device using the trap sheet. <P>SOLUTION: This bullet stopping device comprises a capturing body 23. The capturing body is composed of a viscoelastic sheet and combined with the trap sheet 26 through which a bullet 8 can penetrate, and the bullet is stopped and captured by attenuation of kinetic energy in penetrating through the trap sheet. The trap sheet in the capturing body is disposed in the direction intersecting the shooting direction, and the plurality of trap sheets are superposed in the shooting direction by disposing the trap sheet while being inclined to the shooting direction at a prescribed angle. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a bullet stopping device provided in a shooting range in order to stop a bullet fired from a firearm toward a target behind the target.

  As shown in FIG. 10, the conventional general shooting range is such that the shooter 1 shoots at a target 2 from a predetermined shooting point toward the target 2, and the target 2 is in front of the target 2. A bullet pier 5 is provided to protect the two drive mechanisms 4, a bullet stopping device 6, also called a back stop, is provided behind the target 2, and a bullet collecting groove 7 is provided below the bullet stopping device 6. It has been. In such a shooting range, when the shooter 1 that has arrived at the shooting position shoots a real bullet with a firearm 3 such as a handgun or a rifle toward the target 2, the bullet 8 fired from the firearm 3 flies in the direction of the target 2. The bullet 8 reaches the stopping device 6 directly after hitting and penetrating the target 2 or without hitting the target 2.

  The bullet stopping device 6 is formed of a steel plate having a strength that the bullet 8 does not penetrate. Therefore, the bullet 8 that has reached the stopping device 6 collides with the stopping device 6 and stops, and is crushed by the impact at that time. Crushed pieces or crushed bullets 9 generated by impact crushing at the stopping device 6 are dropped and accumulated in the collecting groove 7 in the lower part of the stopping device 6, and a part thereof becomes a bullet 10 to the shooter side. It may be scattered. In the applied shooting training, the shooting position may not always be determined.

  As described above, the conventional general shooting range has a structure in which a bullet collides with a bullet stopping device and is crushed, which causes a lead powder problem. Specifically, lead powder (lead vapor) generated by crushing bullets pollutes the shooting range and the surrounding environment, and a grader approaches the target 2 to confirm the landing position on the target 2 In addition, there is a possibility that workers may ingest lead powder at the time of collection work such as crushed bullets collected in the collection groove, and may suffer health damage.

  For this reason, a bullet stopping device capable of stopping a bullet without crushing it is desired. For example, a non-crushing bullet stopping device as disclosed in Patent Document 1 and Patent Document 2 has been developed. .

  The bullet stopping device of Patent Document 1 is configured by depositing a granular material, and is stopped by absorbing the kinetic energy of the bullet with the accumulated granular material. Therefore, the bullet can be stopped without being crushed. In the present specification, such a stopping device is temporarily called a granular material type.

  On the other hand, as shown in FIG. 11 and FIG. 12, the bullet stopping device (back stop) of Patent Document 2 is a plurality of sheet-like traps made of flat rubber fibers containing flat fibers arranged so as to overlap in the shooting direction. The steel plate 13 is combined with the material 12, and the trap material 12 allows the bullet to penetrate individually, and the bullet is stopped while the kinetic energy is attenuated at the time of the penetration. Therefore, the bullet can be stopped without being crushed. In the present specification, such a stopping device is temporarily called a sheet type.

JP 2002-318097 A JP 2006-97932 A

  The non-crushing and stopping type stopping devices of Patent Document 1 and Patent Document 2 are all excellent in that the problem of lead powder can be effectively solved by stopping the bullet without crushing it. However, the granular material-type stopping device as in Patent Document 1 has one problem. This is a problem in that it has a structure in which granular materials are deposited, so that a large-scale construction is required for installation, and it is difficult to install on an existing shooting range. On the other hand, there is no problem regarding installation work in the sheet-type bullet stopping device as in Patent Document 2. Therefore, it can be said that a sheet-type bullet stopping device is more suitable for solving the lead powder problem in the existing shooting range.

  However, the sheet-type stopping device has a problem of damage to the trap material. In the sheet-type bullet stopping device, since the bullet penetrates the trap material, the trap material is damaged by the repeated penetration of the bullet, thereby reducing the kinetic energy attenuation capability of the trap material against the bullet. And if such damage progresses, the bullet will penetrate the stopping device without making an effective stopping. For this reason, if the trap material is damaged beyond a certain level, maintenance work is required to replace or repair it.

  Regarding the damage problem of the trap material, the stopping device of Patent Document 2 has a problem that the damage of the trap material is fast and requires frequent maintenance work, and the utilization efficiency of the trap material is deteriorated. There is also a problem. These problems are related to the structure in which trap materials are arranged and stacked in the shooting direction. In other words, in the structure in which trap materials are arranged and stacked in the shooting direction, the positional relationship between the target and the trap material must be fixed, which accelerates the progress of damage to the trap material, and the efficiency of use of the trap material Make it worse. Specifically, it is as follows.

  As shown in FIG. 13, the flying direction of the bullets fired from the firearms tends to be normally distributed with respect to the center of the target, and depending on the proficiency of shooting, 95% or more of the projecting bullets in a general shooting range. Is said to be concentrated on the target (this is a size of 750 mm × 750 mm, which is a common example being arranged at a distance of 1.2 m or more). Combining the concentration of the projectile bullets at the target with the fixed position of the target and the trap material, the bullets fired targeting the target will be focused on a specific part of the trap material. In addition, the damage of the trap material is accelerated with respect to the stopping function.

  In addition, the fixed positional relationship between the target and the trap material leads to the need for replacement or repair of the trap material due to damage mainly occurring at a specific site due to the concentrated landing as described above. In other words, the trapping material needs to be replaced or repaired in a state where the landing frequency is low and there are many undamaged regions, and the utilization efficiency of the trapping material is deteriorated.

  Also in the stopping device of Patent Document 2, it is characterized in that the seams of the trap material are arranged so as not to be aligned in the front-rear direction, and other bullets entering in the path of FIG. The number of trap materials in the bullet passage path is less than that in the path, and structurally, the seam portion of A must be positioned so that the bullets between the targets are not relatively concentrated. For this reason, the positional relationship between the target and the trap material must be fixed even in the stopping device of Patent Document 2.

  The present invention has been made in the background as described above, and it is possible to improve the damage problem of the trap material and reduce the burden of maintenance work on the seat-type stopping device, and to use the trap material. It is an object to be able to improve the efficiency, and further to arbitrarily set and adjust the durability of the bullet stopping device in accordance with the concentration frequency of bullets and the power of firearms used.

  In the present invention, in order to solve the above-described problem, a viscoelastic material sheet is provided in a bullet stopping device provided in a shooting field for stopping a bullet fired from a firearm by shooting at a target behind the target. The trap is formed in combination with a trap material that allows the bullet to penetrate while causing kinetic energy attenuation, and the bullet is stopped and captured by the kinetic energy attenuation by the trap material. The trapping material in the capturing body is arranged in a direction intersecting the shooting direction and tilted at a predetermined angle with respect to the shooting direction. It is characterized in that a plurality of sheets are overlapped in the shooting direction.

  Thus, in the stopping device of the present invention, the trap materials are arranged in a direction intersecting the shooting direction, and the trap materials are arranged in such a state that the trap materials are inclined at a predetermined angle with respect to the shooting direction. The multiple trap materials overlap in the shooting direction. That is, the trap materials are arranged in a crossing manner in the shooting direction and in an inclined arrangement in the shooting direction so that the trap materials are overlapped. Therefore, in the stopping device of the present invention, it is possible to change the landing position on the trap material by changing the inclination angle of the trap material, and change the position of each trap material in the arrangement direction with respect to the positional relationship with the target. In addition, it is possible to make the number of overlapping trap materials partially different in the direction in which the trap materials are arranged. Such characteristics can increase the utilization efficiency of the trap material and can slow the progress of damage to the trap material. Specifically, it is as follows.

  By changing the trapping material's tilt angle, it is possible to change the landing position on the trapping material, so that it is possible to avoid landing of the landing on a specific part of the trapping material, and to improve the efficiency of using the trapping material. And the progress of the damage of the trap material can be delayed.

  By being able to change the position of each trap material in the arrangement direction with respect to the positional relationship with the target, it is possible to position the trap material that was located in the low landing frequency site, in the high landing frequency site, Therefore, it is possible to average the landing frequency on each trap material that constitutes the trapping body, and this delays the progress of damage of the trap material on average compared to the case where the landing is concentrated on a specific trap material. Furthermore, the durability of the bullet stopping device can be arbitrarily set and adjusted in accordance with the frequency of bullet concentration and the power of the firearm used.

  By allowing the number of trap materials to overlap in the trap material arrangement direction, it is possible to alternate between dense portions with a large number of overlaps and rough portions with a small number of overlaps in the direction of the trap material. Therefore, it can be formed dense in order to ensure high resting elasticity at a site with high landing frequency and rough at a site with low landing frequency. That is, the trap material can be arranged in accordance with the landing frequency, thereby improving the trap material utilization efficiency.

  Further, in the bullet stopping device of the present invention, the trap material is inclinedly arranged in the shooting direction, so that the kinetic energy attenuation capability for the bullet in each trap material can be effectively enhanced. The kinetic energy attenuation of the bullet by the trap material is mainly performed as the bullet penetrates the trap material. For this reason, the kinetic energy attenuation capability of each trap material correlates with the penetration length when the bullet penetrates the trap material, and therefore correlates with the thickness of the trap material. In this regard, the effective penetrating length is t / sin θ, where θ is the inclination angle of the trapping material in the shooting direction inclined arrangement, t is the thickness of the trapping material, and the penetrating length is set by arranging the trapping material in the shooting direction inclined arrangement. Therefore, it is possible to effectively increase the kinetic energy attenuation capability of the individual trap material, and this can also increase the utilization efficiency of the trap material.

  The stopping device of the present invention changes the trapping material inclination angle as described above, changes the position of each trapping material in the arrangement direction with respect to the positional relationship with the target, or sets the number of trapping materials to be overlapped. It has a characteristic that it can be partially different depending on the direction. Therefore, in order to make effective use of such characteristics, the present invention makes it possible to change the inclination angle of the trap material for the above-mentioned bullet stopping device as described above. It is preferable that the position of the material in the arrangement direction can be changed, and that the number of overlapping trap materials is partially different in the arrangement direction of the trap material. This is one of the preferred forms.

  Moreover, in this invention, it is set as the preferable form that the inclination angle in the said inclination arrangement | positioning shall be 45 degree | times-70 degree | times about the above stopping devices.

  In the above-mentioned bullet stopping device, if the trap material is damaged beyond a certain level, the bullet penetrates the capturing body. However, when such a state is reached, it is a maintenance work time to replace or repair the trap material. In this case, it is desirable that maintenance work can be performed if even one bullet penetrates the capturing body. Therefore, in the present invention, it is preferable that a penetrating detection mechanism for detecting that the bullet has penetrated the capturing body is provided at the rear of the capturing body in the above-described bullet stopping device. By doing in this way, if a bullet penetrates the capturing body, this can be detected by the penetration detection mechanism, and maintenance work can be performed at the best timing.

  According to the present invention as described above, with respect to the sheet-type stopping device, the damage problem of the trap material can be improved, the burden of maintenance work can be reduced, and the utilization efficiency of the trap material can be improved.

  Hereinafter, modes for carrying out the present invention will be described. In FIG. 1, the structure of the shooting range which installed the stopping device 21 by 1st Embodiment is shown. The shooting range of FIG. 1 is basically the same as the shooting range of FIG. 10 described above. Therefore, elements common to the shooting range in FIG. 10 are denoted by the same reference numerals as in FIG. 10, and the above description is incorporated.

  The bullet stopping device 21 of this embodiment includes a back plate 22, a capturing body 23, and a bullet collection device 24.

  The back plate 22 is an element that functions to stop and capture the bullet when there is a bullet penetrating the capturing body 23, and is formed of a steel plate having an appropriate thickness and is directed toward the target 2. It is provided so as to be inclined. Also, the back plate 22 has a bullet collecting groove 25 formed at the base end portion so that the bullets stopped can be dropped and accumulated in the bullet collecting groove 25.

  The capturing body 23 is formed by combining a plurality of trap materials 26 as shown in FIGS. 2, 3A, 3B, and 3C. Further, as shown in FIG. 1, the capturing body 23 is attached to the back plate 22 in a suspended state. Specifically, a bracket 27 is projected from the back plate 22 at a position near its tip, and a suspension mechanism 28 is provided on the bracket 27, and the capturing body 23 is suspended by the suspension mechanism 28.

  The suspension mechanism 28 is a curtain rail structure suspension rail 29 attached to the bracket 27 so as to extend in the arrangement direction in the firing direction crossing arrangement of the trap members 26 as described later, and is movable to the suspension rail 29. A plurality of hooks 30 engaged with each other are provided, and suspension rails 29 are provided in two rows, and the trap members 26 are individually suspended by two-point support by the hooks 30 of the suspension rails 29 of the two rows. Has been. For this reason, the trap members 26 can be individually moved in the arrangement direction while maintaining the inclination angle θ (FIG. 3A) in the shooting direction inclination arrangement as described later.

  The trap material 26 is formed into a vertically long rectangular sheet shape using a viscoelastic material, and has a viscoelasticity that allows penetration of the bullet 8 fired from the firearm 3 while causing attenuation of kinetic energy. Has been. As the viscoelastic material, for example, rubber or plastic with high elastic viscosity, reinforcing fiber cloth, mesh material, or the like can be used, and a composite material in which these are combined can be used.

  These trap materials 26 are combined in the capturing body 23 in a crossing arrangement in the shooting direction and in an inclined arrangement in the shooting direction so that a plurality of them overlap in the shooting direction. The shooting direction crossing arrangement is an arrangement method in which the trap materials 26 are arranged in a direction crossing the shooting direction, more specifically in a direction crossing the standard shooting direction, and the crossing state with the standard shooting direction is orthogonal. Is normal. On the other hand, the shooting direction inclined arrangement is an arrangement method in which the trap material 26 is arranged so as to be inclined at a predetermined angle with respect to the standard shooting direction, and the trap material 26 is arranged so as to be inclined at a predetermined angle in the arrangement direction. It can be said that this is an arrangement method. It is particularly preferable that the inclination angle θ (FIG. 3A) in such a shooting direction inclination arrangement is 45 degrees to 70 degrees. Here, the standard shooting direction is a shooting direction that is normally generated by shooting toward the target 2, and corresponds to a line segment that passes through the target center of the target 2 and is orthogonal to the target 2, that is, the direction of the target center line. .

  The trap material 26 combined in the shooting direction crossing arrangement and the shooting direction inclined arrangement as described above can be moved individually in the arrangement direction by the suspension mechanism 28, so that the trap material 26 can be moved in the arrangement direction. It is possible to make the overlapping number partially different, that is, it is possible to alternately form a dense part with a large number of overlapping and a rough part with a small number of overlapping in the arrangement direction. Specifically, dense portions 31 and rough portions 32 are alternately formed and arranged as shown in FIG. Then, as shown in FIG. 3C, the area center of the parallelogram formed by the dense part 31 and the part corresponding to the target 2, that is, the part having a high landing frequency are positioned (this is the parallel part formed by the dense part 31. The center of the quadrilateral is also positioned so as to coincide with the center line of the target 2), and the rough portion 32 is positioned at a corresponding site between the target 2 and the target 2.

  When the dense portion 31 and the rough portion 32 are formed in this way, the number of overlapping trap materials 26 in the shooting direction at the target center is maximized, and the number of overlapped trap materials 26 decreases as the distance from the target center increases. In the example of FIG. 3, the number of overlaps is 10 at the center of the dense portion 31 indicated by arrows AA, the number of overlaps is 8 at portions indicated by arrows BB, and the number of overlaps is indicated by portions indicated by arrows CC. 6. The number of overlaps is 5 at the part indicated by arrow DD. The overlap number distribution of the trap material 26 corresponds well with the bullet flight direction distribution shown in FIG. This gives the trapping body 23 the resting elasticity according to the landing frequency in relation to the target 2, and the utilization efficiency of the trap material 26 can be increased.

  As described above, the dense portion 31 and the rough portion 32 are formed as shown in FIG. 4. As a result, the damaged portion 33 that has been damaged more than a certain amount is generated because the dense portion 31 is located at a high landing frequency. The trap material 26 is moved to the coarse portion 32 having a low landing frequency, while the trap material 26 that is not so damaged due to being located in the coarse portion 32 is moved to the dense portion 31. It is also possible to replace the trap material 26 located in each of the 31 and the rough portion 32. And by doing so, it becomes possible to make the landing frequency of each trap material 26 constituting the capturing body 23 uniform, and the progress of damage of the trap material 26 can be delayed on average.

  Furthermore, the function that can arbitrarily set the number of overlapping trap materials in the direction of bullet advancement can arbitrarily set and adjust the durability of the stopping device according to the concentration frequency of bullets in the installed shooting range and the power of the firearms used. There are also advantages.

  FIG. 5 shows the principle of catching and stopping the bullet 8 by the catching body 23. The bullet 8 fired from the firearm 3 enters the capturing body 23 as shown in FIG. 5A, proceeds in the capturing body 23 while sequentially passing through the trapping material 26, and moves every time it penetrates the trapping material 26. Decelerate by attenuating energy. When the bullet 8 is decelerated until it cannot penetrate the trap material 26, the bullet 8 further attenuates the kinetic energy while elastically deforming the trap material 26 at the position where the state has occurred, thereby losing the velocity component in the firing direction. To stop ((B) to (D) in FIG. 5). For this reason, the bullet 8 can be stopped and caught without crushing or generation of lead powder.

  Here, the effective penetration length when the bullet 8 penetrates the trap material 26 is that the trap material 26 is inclined in the shooting direction at an inclination angle θ. t / sinθ. That is, a penetration length longer than the thickness t of the trap material 26 can be obtained. For example, it is assumed that the trap material 26 is made of a hard rubber material containing fibers and has a thickness t = 9 mm. When such a trap material 26 is arranged so as to be perpendicular to the shooting direction and overlapped in the shooting direction as in the conventional stopping device, if it is a 38 caliber handgun bullet, the trap material required for the stopping The number of sheets 26 is about six. On the other hand, if the shooting direction is inclined as in the present embodiment, the effective penetration length L = 9 mm / sin (60 degrees) = 10.4 mm, and the effective penetration length L is approximately 115% of the thickness t. For this reason, the same stopping performance can be obtained with five stacked trapping materials 26, and therefore the trap material utilization efficiency can be increased.

  Returning to FIG. 5, the bullet 8 that has stopped by losing the velocity component in the firing direction is pushed back by the elasticity of the trap material 26 at that position, and the trap material gap between two adjacent trap materials 26. (D) to (F) in FIG. The bullet 8 captured in the trap material gap 34 falls in the trap material gap 34 by its own weight. Regarding the falling of the bullet 8 by its own weight, it is desirable that the width D of the trap material gap 34, that is, the overlap distance D of the trap material 26, is wider than the diameter d of the bullet 8. That is, by setting D> d, it is easy to cause the bullet 8 to fall by its own weight.

  The bullet 8 that falls by its own weight in the trap material gap 34 falls into the bullet collection device 24 provided below the capturing body 23. The bullet collecting device 24 is formed in a box structure or a groove structure with an open top, or a belt conveyor structure, and is used to collect bullets captured by the capturing body 23.

  In the bullet stopping and catching as described above, the catching bullets are more easily dropped as the overlap distance D of the trap members 26 is increased ((G) in FIG. 5). However, if the distance D is increased, the thickness of the capturing body 23 is increased. That is, there is a disadvantage that the capturing body 23 is enlarged. Therefore, the distance D should be minimized to the extent that a stable fall of the captured bullet can be obtained on the assumption that the fall is promoted by vibration of the trap material 26 by the subsequent bullet. preferable.

  FIG. 6 shows a case where the inclination angle θ of each trap member 26 in the shooting direction inclined arrangement can be changed. In this case, the suspension rails 29 are arranged in a row, and each trap member 26 is suspended by one point support. For this reason, the trap member 26 can be rotated around the support point in the one-point support, and therefore the inclination angle θ can be changed. In FIG. 6, by combining this rotation (change of the tilt angle) and the movement in the above-described arrangement direction, the trap material 26 causing the damaged portion 33 is moved to the rough portion 32 having a low landing frequency, and further, the damaged portion The example which positions 33 on the back side of the capturing body 23 is shown. Thus, by making the inclination angle θ of the trap material 26 variable, it is possible to change the landing position with respect to the trap material 26, and therefore it is possible to avoid landing of the landing on a specific part of the trap material 26, In addition, the utilization efficiency of the trap material 26 can be increased, and the progress of damage to the trap material can be slowed.

  7 and 8 show the structure of the shooting range in which the bullet stopping device 41 according to the second embodiment is installed. 7 and FIG. 8 is basically the same as the shooting range of FIG. 1, and the stopping device 41 is basically the same as the stopping device 21 of FIG. Therefore, elements common to the shooting range and the stopping device 21 in FIG. 1 are denoted by the same reference numerals as in FIG. 1 and the above description is used.

  The bullet stopping device 41 is provided with a penetration detection mechanism 42 behind the capturing body 23. The penetration detection mechanism 42 includes a non-penetrating film body 43 and a penetration detector 44. The non-penetrating film body 43 is formed into a film shape having such a strength that the bullet 8 does not penetrate using a viscoelastic material, and is formed in the same shape and size as the capturing body 23. It is attached to the bracket 27 so as to cover the entire rear of the capturing body 23 at a position close to. The penetration detector 44 is configured to detect when a certain impact or more is applied to the non-penetrating film body 43.

  Such a penetration detection mechanism 42 functions to detect that when the bullet 8 penetrates the capturing body 23. In other words, when the damage of each trap material 26 progresses and the stopping function of the capturing body 23 is lowered and the bullet 8 may penetrate the capturing body 23, the bullet 8 collides with the non-penetrating film body 43. At that time, the non-penetrating membrane body 43 is given a certain impact. The impact is detected by the penetration detector 44 as a state in which, for example, the non-penetrating membrane body 43 moves in the direction of travel of the bullet 8 and the string connected to the penetration detector 44 is pulled. Penetration can be detected.

  When the bullet 8 sometimes penetrates the capturing body 23, it becomes a maintenance work time for replacing or repairing the trap material 26. However, as in this embodiment, the penetration detecting mechanism 42 is provided and the capturing body of the bullet 8 is provided. By making it possible to detect penetration of 23, it is possible to accurately determine the maintenance work timing, and to perform the maintenance work at the best timing.

  In the present embodiment as described above, since the bullet 8 penetrating the capturing body 23 is stopped by the non-penetrating film body 43 made of a viscoelastic material, the bullet 8 does not need to be crushed. There are advantages.

  In FIG. 9, the structure of the shooting range which installed the stopping device 51 by 3rd Embodiment is shown. The shooting range in FIG. 9 is basically the same as the shooting range in FIG. 1, and the stopping device 51 is basically the same as the stopping device 21 in FIG. Therefore, elements common to the shooting range and the stopping device 21 in FIG. 1 are denoted by the same reference numerals as in FIG. 1 and the above description is used.

  The bullet stopping device 51 is configured such that the back plate 22 also serves as a penetration detection mechanism. Specifically, for example, a penetration detector 52 having a vibration sensor structure or a strain gauge structure is attached to the back plate 22. When the bullet 8 sometimes penetrates the capturing body 23, the bullet 8 is caused to collide and stop on the back plate 22, and the vibration and distortion of the back plate 22 generated at that time are detected by the penetration detector 52. Thus, penetration of the bullet 8 through the capturing body 23 is detected. In this embodiment as well, the maintenance work timing can be accurately determined by detecting the penetration of the capturing body 23 of the bullet 8, and the maintenance work can be performed at the best timing.

  The present embodiment as described above is advantageous in that the structure can be simplified and the cost can be reduced because the back plate 22 is also used as a penetration detection mechanism.

  As mentioned above, although the form for implementing this invention was demonstrated, these are only representative examples, This invention can be implemented with various forms in the range which does not deviate from the meaning. For example, in the above embodiment, the penetration detection mechanism is configured so that the bullet penetrating the capturing body collides with the non-penetrating membrane body and the back plate, and the collision impact is detected as an index to detect the bullet capturing body penetration. Instead of this, it is also possible to configure the penetration detection mechanism by a laser beam method. That is, it is a penetration detection mechanism that forms a film by a laser beam so as to cover the back surface of the capturing body, and detects penetration of the bullet capturing body by using the laser light bullet blocking in the laser light film as an index.

It is a figure which shows typically the state which looked at the structure of the shooting range which installed the stopping device by 1st Embodiment from the side surface direction. It is a figure which shows typically the perspective state of the shooting range of FIG. It is a figure which shows typically the state of the arrangement | sequence and arrangement | positioning of the trap material in a capturing body. It is a figure explaining the movement of a trap material. It is a figure explaining the principle of a bullet stopping capture of a bullet by a capturing object. It is a figure explaining the movement and rotation of a trap material. It is a figure which shows typically the state which looked at the structure of the shooting range which installed the stopping device by 2nd Embodiment from the side surface direction. It is a figure which shows typically the perspective state of the shooting range of FIG. It is a figure which shows typically the state which looked at the structure of the shooting range which installed the stopping device by 3rd Embodiment from the side surface direction. It is a figure which shows typically the state which looked at the structure of the conventional general shooting range from the side surface direction. It is a figure which shows typically the structure of the shooting range in which the conventional sheet-type bullet stopping device was installed. It is a figure which shows typically the perspective state of the shooting range of FIG. It is a figure explaining distribution regarding the target center of the flight direction of a bullet.

Explanation of symbols

2 Target 3 Firearm 8 Bullet 21, 41, 51 Stopping device 23 Capture body 26 Trap material 42 Penetration detection mechanism

Claims (6)

In a bullet stopping device provided in a shooting range in order to stop a bullet fired from a firearm at a target shooting at the rear of the target,
The bullet is formed by combining a trap material that is formed into a sheet shape with viscoelastic material and allows penetration while causing attenuation of kinetic energy. The bullet is stopped by attenuation of kinetic energy by the trap material. A trapping body adapted to be trapped by being bounced, wherein the trapping material in the trapping body is arranged in a direction intersecting the shooting direction and inclined at a predetermined angle with respect to the shooting direction. A stopping device characterized by being arranged so that a plurality of sheets overlap in the shooting direction.   The stopping device according to claim 1, wherein an inclination angle of the trap material can be changed.   The stopping device according to claim 1 or 2, wherein a position of the trap material in the arrangement direction can be changed.   The stopping device according to any one of claims 1 to 3, wherein the number of the overlapping trap materials is partially changed in the arrangement direction of the trap materials.   5. The bullet stopping device according to claim 1, wherein an inclination angle in the inclined arrangement is 45 degrees to 70 degrees.   The bullet stopping device according to any one of claims 1 to 5, wherein a penetration detecting mechanism for detecting that the bullet has penetrated the capturing body is provided behind the capturing body. .

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