JP5187936B2 - Bullet - Google Patents

Description

  The present invention performs a predetermined operation such as, for example, scattering a debris to the surroundings or spraying a fire extinguishing agent or the like to the surroundings by being dropped from a flying object such as an aircraft or projected from a launch tube and impacted. Concerning the bullet to be performed.

2. Description of the Related Art Conventionally, as a multi-purpose bullet to be dropped from a flying object such as an aircraft, there is a configuration in which a glaze is filled in a cylindrical shell, and fragments are scattered radially around by detonation at the time of impact.
In the multi-purpose ammunition constructed as described above, if the shell is tilted with respect to the impact surface during detonation, some of the fragments that scatter in a ring shape will be blocked by the impact surface, and the range of scattering will be narrowed. Debris effect cannot be obtained.

Therefore, in order to raise the bullet shell at the time of detonation, for example, by attaching a resistor such as a ribbon to the bullet shell and dropping it from the sky at the time of dropping, the bullet shell at the time of impact is placed against the impact surface. There are things that are configured to stand up with the axis centered as vertical as possible, or to stand up by opening multiple legs after landing, such as warheads for anti-tank (non-patent Reference 1).
Federation of American Scientists. [Online] .M93 HORNET [Family of Wide Area Munitions-WAM]. [Retrieved on 2006-12-12]. Retrieved from the Internet: <URLl: http: //fas.org/man/dod -101 / sys / land / m93.htm>

However, in the case where a resistor such as a ribbon is attached as in the former case, if the shell is dropped at a low altitude, the bullet shell will land in an inclined state, so it must be dropped from a corresponding high altitude.
On the other hand, in the structure of standing up after landing as described in Non-Patent Document 1, not only can a fragment effect be obtained immediately after landing, but also a complicated mechanism for standing up is required. In addition to incurring an increase in size and weight, there are drawbacks in that the cost must be increased.

  Therefore, the present invention provides a projectile that can project obliquely from a low altitude, can be manufactured at a low cost with a lightweight and simple configuration, and can obtain an immediate effect at the time of impact. It is an object.

In order to solve the above problems, the present invention is provided with a sensing unit that senses impact and an operation unit that performs a predetermined operation by sensing impact, and the body is gradually fixed by oblique projection. In a bullet that falls in a direction, when the main body strikes and strikes against the impact surface, it is arranged so as to come into contact with the impact surface prior to detection of impact by the sensing unit; and the turning member for turning so as to stand the body bullet deposition surface by the contact, which is more protruded at predetermined angular intervals around the body, the sensing unit, one of the turning member an impact detection sensor for sensing an impact upon contact with the bullet deposition surface, this by the impact detection sensor from upon sensing an impact, and possess a starting time delay circuit for delaying the start of the operation portion for a predetermined time .

  According to the present invention, when the main body is slanted with respect to the landing surface, any of the turning members come into contact with the landing surface prior to the detection of the landing by the sensing unit. Therefore, it is possible to start the moving part after raising the main body, so that the main body can be raised with respect to the impact surface even when projected from a low altitude. At the same time, an immediate effect can be obtained, and a lightweight and simple configuration can be produced at low cost.

The best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a bullet according to the first embodiment of the present invention, and FIG. 2 is a bottom view of the bullet.
The bullet body A according to the first embodiment has a structure including a main body 10 whose details will be described later and a plurality of turning members 20... And is used by being obliquely projected.
The form of “oblique projection” includes, for example, dropping from a flying object such as an aircraft or a missile or projecting from a launch tube.

The main body 10 includes a case 50 in which an outer shell 60 is provided with a partition wall 70 and an initiator 30.
The outer shell 60 is integrally formed with an upper wall 61 in the vicinity of the upper end portion, and has a cylindrical shape with an opening at the lower end that is a head portion. A stepped portion 63 for fitting the body 70 and the detonator 30 is formed over the entire circumference. Note that “O” is an axis passing through the center of the case 50.

  The partition wall 70 is formed with a flange portion 71 fitted to the stepped portion 63 over the entire circumference of the lower end opening 72, and is formed in a truncated cone shape that gradually becomes smaller in diameter from the lower end opening 72 toward the upper end wall 73. It is what.

  By causing the collar portion 71 of the partition wall 70 to fit into the opening 62 of the outer shell 60, the inside of the outer shell 60 receives the glaze filling portion 64 filled with the glaze M and the initiation that receives the initiation portion 32 of the initiation device 30. It is partitioned into a part receiving recess 65.

The initiation device 30 includes a mounting board 31, an initiation unit 32, and a sensing unit 80.
The mounting board 31 is a circular plate having the same diameter as the outer diameter of the outer shell 60, and the initiation part 32 is aligned with the axis O on the upper surface 31a and the sensing part 80 on the lower surface 31b. And a pair of support pieces 33, 33... For supporting the turning member 20 at 90 degree intervals centered on the axis O. Has been established.

Each of the pair of support pieces 33 and 33 is disposed with an interval to pivotally support the base end portion 20a of the turning member 20, and a shaft hole 35 into which a shaft 34 for supporting the turning member 20 is inserted. Is formed.
Further, one of the support pieces 33, 33 is provided with a locking hole 37 for locking the one end portion 36 a of the torsion spring 36. Reference numeral 39 denotes a stop ring for fixing the shaft 34 to the support pieces 33, 33.

  The sensing unit 80 incorporates a touch sensor (not shown) in a cylindrical cover 81 whose top (lower end) 81a is a spherical surface, and the cover 81 comes into contact with an impact surface S such as the ground. This is to detect the impact.

The initiator 32 is an initiator (not shown) for starting when an impact is detected by the sensor 80 in the frustoconical outer wall 38 that matches the shape of the inner peripheral wall of the initiator receiving recess 65 described above. And the like.
In the present embodiment, the above-described initiation unit 32 and the case 50 filled with the glaze M constitute an operation unit 40 that performs a predetermined operation by detecting impact.
The “predetermined operation” in the present embodiment is to explode the glaze to pulverize the case 50 to generate debris and to scatter the generated debris around.

  The turning member 20 is disposed so as to come into contact with the impact surface S prior to the detection of the impact by the sensing unit 80 when the main body 10 inclines with respect to the impact surface S, and the contact. The main body 10 is turned so as to stand up on the impact surface S, and the required range is widened from the base end 20a to the open end 20b, and the cross-sectional square is slightly narrower than the base end 20a. Further, a shaft hole 21 for inserting the above-described shaft 34 and a locking hole 22 for locking the other end 36b of the torsion spring 36 are formed in the base end portion 20a. It is installed.

That is, each turning member 20 turns the main body 10 so as to stand on the impact surface S (a), and in this embodiment, the turning position (a) for storing in the flying object. It is supported so that it can move between.
In other words, the turning position (A) opened around the base end 20a for raising the main body 10 and the base end 20a closed for storage in a flying object (not shown) or a launch tube. It is supported so as to be movable between the umbrella storage position (A).
Further, by inserting and locking the both end portions 36a and 36b of the torsion spring 36 in the locking holes 37 and 22, the turning members 20 are always elastically biased toward the turning position (a). It is supposed to be.
The open end 20b is also referred to as a grounded end because it is assumed that the open end 20b contacts the impact surface S prior to the impact detection by the sensing unit 80.

In the present embodiment, the relative positional relationship between the cover 81 of the sensing unit 80 and each turning member 20 that has moved to the turning position (A) is moved to the turning position (A) in a front view. The top end 80a of the cover 81 of the sensing unit 80 protrudes by a dimension T below the imaginary straight line connecting the open end portions 20b of the respective turning members 20.
That is, when the main body 10 is supported by the four turning members 20 to stand on the impact surface S, the cover 81 of the sensing unit 80 is surely contacted with the impact surface S. .

The operation of the bullet A according to the first embodiment having the above configuration will be described with reference to FIG. FIG. 3 is an explanatory diagram showing a state in which the bullet A according to the first embodiment is projected from a flying object or a launch tube.
The above-described bullet A is set to have a center of gravity so that the axis O of the main body 10 is directed in a certain direction by free fall after being obliquely projected from the flying object or launch tube. Specifically, the center of gravity is set so that the head of the main body 10 faces downward and gradually becomes a vertical posture.

When the bullet A is mounted on a flying object or launcher (not shown), as shown in FIG. 1, each turning member 20 is moved to the storage position (A). When the bullet A is mounted on the flying object or the launch tube, it is possible to mount more bullets A by moving the turning members 20 to the storage position (A).
When the bullet A is projected, each turning member 20 is urged and moved from the storage position (A) to the turning position (A) by the torsion spring 36 to be opened.

As shown in (c), when the main body 10 of the projected bullet A approaches the landing surface S while being inclined, the open end 20b of any of the turning members 20 is caused by the sensing unit 80. The impact surface S is touched while standing for impact detection.
That is, as shown in (D), when the open end 20b of any of the turning members 20 contacts the impact surface S, the open end 20b is centered according to the external force according to the speed at the time of contact. Rotational moment is generated in the direction in which the main body 10 is raised.

As a result, the main body 10 is turned to stand up, and the main body 10 is turned to 4 as indicated by (e).
When the book turning member 20 is erected and supported, the cover 81 of the sensing unit 80 comes into contact with the impact surface S and the touch sensor is activated, and the glaze explodes due to the initiation of the initiation unit 32 in conjunction therewith. Debris is generated and scattered around.
That is, even when the bullet A is dropped and landed in a tilted state, the main body 10 can be erected at the time of the explosion, so that the generated fragments can be evenly scattered around. “To stand up” is synonymous to stand upright on the impact surface S.

  Next, a modification of the turning member will be described with reference to FIGS. FIG. 4 is a front view of a bullet body according to a second embodiment provided with a modification of the turning member, and FIG. 5 is a bottom view thereof. 1 to 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

The bullet B according to the second embodiment is different from the bullet A according to the first embodiment described above in that a turning member according to a modification is provided.
A diverting member 90 according to one modification is formed in a base 91 that is slightly narrower than the base end 90a from the base end 90a to the open end 90b that has a wide required range, and the open end 90b. A grounding portion 92 for increasing the grounding area is integrally formed.
The base end portion 90a is provided with the shaft hole 93 for inserting the shaft 34 and the locking hole 94 for locking the one end portion 36a of the torsion spring 36 as described above. This is the same as the turning member 20.
The grounding portion 92 is a plate body formed in a substantially triangular shape that is long in a direction orthogonal to the base portion 91 in plan view.
By forming the ground contact portion 92 as in this example, the contact area with the impact surface S increases, so that the main body 10 can be raised more reliably regardless of the unevenness of the impact surface S or the like. it can.
Further, by forming it long in a direction orthogonal to the base 91 in a plan view, for example, when the number of turning members is reduced, the main body 10 can be erected reliably.

  Next, the bullet according to the third embodiment of the present invention will be described with reference to FIGS. FIG. 6 is a front view of a bullet according to the third embodiment of the present invention, and FIG. 7 is a bottom view of the bullet. In this embodiment as well, the same components as those described in FIGS. 1 to 3 are denoted by the same reference numerals, description thereof is omitted, and main differences are described in detail.

The bullet C according to the third embodiment is different from the bullet A according to the first embodiment described above in that a mounting plate having a structure for pivotally supporting the six turning members 20 is provided. Yes.
The mounting board 100 is a circular plate having the same diameter as the outer diameter of the outer shell 60, and the initiation part 32 is aligned with the axis O on the upper surface 100a and the sensing part 80 is aligned with the lower surface 100b. And a pair of support pieces 33, 33... For projecting the turning member 20 at an interval of 60 degrees around the axis O. Has been established.
In this way, by supporting more turning members 20..., The operation of raising the main body 10 can be performed more reliably.

The present invention is not limited to the above-described embodiments, and the following modifications can be made.
In each of the above-described embodiments, the sensing unit having a touch sensor (not shown) built in the cover has been described. However, the following configuration may be employed.
That is, an impact detection sensor that senses an impact when any of the turning members comes into contact with the impact surface, and an activation that delays the activation of the operation unit by a predetermined time from when the impact is sensed by the impact detection sensor A time delay circuit may be provided.
“Detecting an impact when any turning member contacts the impact surface” is synonymous with detecting impact.
The above "predetermined time" is the time from when any turning member contacts the impact surface until the main body stands up, but is not limited to this, for example, until the main body stands up. When it is assumed that the time varies, the time may be taken into consideration.
With such a configuration, it is not necessary to physically contact a part of the impacting surface as in the sensing unit described above, so that the operation unit can be accurately activated without being affected by the unevenness of the impacting surface. Can do.
The impact detection sensor may be arranged on the main body in addition to the turning member. That is, it is only necessary to be disposed at a position where any of the turning members can sense an impact when contacting the impact surface.

  In each of the above embodiments, an example has been described in which the center of gravity is set so that the axis of the main body faces a certain direction due to free fall after being obliquely projected from the flying object or launch tube. It is also possible to make the axis of the main body face a certain direction by attaching a structure or a ribbon provided with stabilizing blades at the upper end.

In each of the above-described embodiments, the case where four or six turning members are provided is illustrated, but at least three turning members may be provided. In this case, the three turning members are mutually connected. It is recommended that the interval be 120 degrees.
Even when two turning members are provided, the same effect as that obtained when three or more turning members are provided by providing a longer grounding portion than that described in FIGS. be able to.

Moreover, in the above, although the thing of the structure which filled the glaze in the main body was demonstrated, it may replace with a glaze and you may fill a fire extinguisher in a main body. In this case, since the main body can be kept standing at the time of detonation even when the bullet is dropped and impacted, the fire extinguisher can be evenly scattered around. In this case, the main body filled with the digestive agent and the initiating portion constitute an operation portion that performs a predetermined operation upon detection of impact.
The “predetermined operation” in the present embodiment is that the fire extinguishing agent is evenly scattered around by the detection of impact.

It is a front view of the bullet concerning a first embodiment of the present invention. It is a bottom view of the bullet body same as the above. It is explanatory drawing which shows the state which carried out the slanting projection from the flying body or the launch cylinder about the bullet body which concerns on 1st embodiment. It is a front view of the bullet concerning a first embodiment provided with one modification of a member for turning. It is a bottom view same as the above. It is a front view of the bullet concerning a second embodiment of the present invention. It is a bottom view of the bullet body same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Main body 20 and 90 Turning member 40 Operation part 80 Sensing part A, B, C Bullet S Impact surface

Claims (4)

In a bullet body that is provided with a sensing unit that senses impact and an operation unit that performs a predetermined operation by sensing impact, and the body gradually falls in a certain direction by oblique projection,
When the main body is inclined with respect to the impact surface, it is arranged so as to contact the impact surface prior to the detection of the impact by the sensing unit, and the main body stands on the impact surface by the contact. A plurality of turning members to be turned at predetermined angular intervals around the main body ,
The sensing unit includes an impact detection sensor that senses an impact when any of the turning members comes into contact with the impact surface, and the activation of the operation unit for a predetermined time after the impact is sensed by the impact detection sensor. A bullet having an activation time delay circuit for delaying . 2. The bullet according to claim 1, wherein the predetermined time is a time from when any of the deflecting members comes into contact with the impacting surface until the main body stands up . Each turning member is movable between a turning position for turning the main body so as to stand on the impact surface and a storing position for storing in a flying object or a launch tube that performs oblique projection. ammunition body according to claim 1 or 2, characterized in that it is supported. 4. The sensor according to claim 1 , wherein the sensor has a touch sensor that senses impact by contacting the impact surface, and the sensor is disposed on the head of the main body . The bullet according to any one of the above.

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