JP5798219B1 - Security rod, security rod provided with the security rod, and security staff provided with the security rod - Google Patents

Abstract

The present invention provides a guard rod-like body that is lighter than before and can maintain bending strength and impact force even if the weight is reduced, a guard rod provided with the guard rod-like body, and a guard cane provided with the guard rod-like body. . A security bar 1 comprising a cylindrical bar 2, wherein a groove is provided on an inner wall of the bar 2. Provided are a security rod 1, a security rod 4 provided with the rod 2, and a security staff provided with the rod 2. The baton 4 includes a rod-shaped body 2, a grip portion 5 provided at one end of the rod-shaped body 2, and a flange portion 6 provided between the grip portion 5 and the rod-shaped body 2 and extending radially outward of the rod-shaped body 2. It has. A top ball 7 is screwed to the tip of the rod-shaped body 2 that is one end side of the baton 4. [Selection] Figure 1

Description

  TECHNICAL FIELD The present invention relates to a bat and a wand used for police officers and guards, and more specifically, a bat and a guard provided with a guard rod that is lighter than conventional and does not impair bending strength and impact force. The present invention relates to a wand equipped with a rod-shaped body.

A baton is generally a rod with a length of less than or equal to the length of an arm, and is used as a self-protection device or arrest device.
Police officers are required to carry equipment for all situations in their duties, and protective equipment plays an important role in avoiding the lives of police officers from danger. Above all, the role of the batons worn by police officers is large, most of them are aluminum alloy telescopic type, better portability than the past wooden batons that do not expand and contract, and longer service life (the following patent documents) 1).

  A police cane is a security equipment used as a self-defense device and arrest device like a baton, but it can be used as a core for first aid stretchers to search for leftovers during criminal investigations. It is used for a wide range of applications. The wand is longer than the bat, and there are three types of lengths of 90 cm, 120 cm, and 180 cm (see Patent Document 2 below).

However, a lot of equipment is required for police officers to carry out their duties in addition to the batons, and in order to improve mobility, it is necessary to reduce the weight of each equipment carried.
In recent years, women's social advancement has been remarkable, and the same tendency can be seen in police officers. Although there are physical differences, women generally have weaker arms than men, so the power to swing the batons is less than that of male police officers.
Therefore, in addition to reducing the weight, there is a need for a technique that does not impair the function of the equipment (warm stick, warning stick) due to the weight reduction.

Japanese Patent No. 4301460 Japanese Patent Laid-Open No. 8-21989

  In particular, when delivering equipment such as batons and wands to the police station, the police station must meet standards such as bending strength, tensile strength, thrust strength, and heel strength. Simply reducing the wall thickness of the cylindrical portion (rod-like body) has a problem that the strength is insufficient and the impact resistance is impaired when the alarm stick is used.

  The present invention has been made in order to solve the above-described problems, and is provided with a guard rod-like body that is lighter than before and can maintain bending strength and impact force even when the weight is reduced, and the guard rod-like body. An object of the present invention is to provide an alarm stick provided and an alarm stick provided with the guard rod.

The invention according to claim 1 is a security rod-shaped body made of a cylindrical aluminum alloy rod-shaped body,
A groove is provided on the inner wall of the rod-shaped body.
The groove portion has a spline shape that is provided in a plurality of continuously or discontinuously along the axial direction of the rod-shaped body and in the circumferential direction of the rod-shaped body,
The cross section of the groove portion perpendicular to the axis of the rod-shaped body is rounded.
The present invention relates to a security rod.

  The invention according to claim 2 relates to the guard rod-like body according to claim 1, wherein the groove is provided in a spiral shape along the axial direction of the rod-like body.

  The invention according to claim 3 relates to a baton or wand equipped with the bar-like body for security according to claim 1 or 2.

According to the first aspect of the present invention, there is provided a security rod-shaped body made of a cylindrical aluminum alloy rod-shaped body, and a groove is provided on the inner wall of the rod-shaped body, that is, the inner wall is made thinner. Because it has a structure with ribs, the strength of the rod-like body due to weight reduction can be supplemented by the ribs on the inner wall of the rod-like body, and the bending strength and impact force applied to the object can be maintained even if the weight is reduced The groove portion has a spline shape that is continuously or discontinuously provided along the axial direction of the rod-like body and in the circumferential direction of the rod-like body, and a cross section perpendicular to the axis of the rod-like body of the groove portion Is a round shape, and can further increase the bending strength and the impact force applied to the object.

  According to the invention which concerns on Claim 2, since the said groove part is provided spirally along the axial direction of the said rod-shaped body, the bending strength and the impact force given to a target object can further be improved.

The invention according to claim 3 is a baton or a wand using the invention according to claim 1 or 2.

It is a figure showing a 1st embodiment of a baton according to the present invention. It is an AA line sectional view of a baton in a 1st embodiment, (a) is a figure showing that the section of a slot is round shape, and (b) shows that the section of a slot is involute shape. (C) is a diagram showing that the cross section of the groove is a square shape, (d) is a diagram showing that the shape of the groove is a trapezoidal shape, and (e) is a diagram of (a). It is a partial longitudinal cross-sectional perspective view, (f) is a partial vertical cross-sectional perspective view of (b). (A) is a partial longitudinal cross-sectional perspective view of the rod-shaped body when a groove part is provided in a spiral shape, and (b) is a diagram showing a lead angle of the groove part with respect to a transverse section when the groove part is provided in a spiral shape. . It is a figure which shows 2nd Embodiment of the baton which concerns on this invention. It is a BB line sectional view of the tip of a baton in a 2nd embodiment, (a) is a figure showing that the section of a groove part is round shape, and (b) is the section of an involute spline shape of a groove part. It is a figure which shows that there exists, (c) is a figure which shows that the cross section of a groove part is square shape, (d) is a figure which shows that the shape of a groove part is trapezoid shape. It is a figure which shows the impact-force measurement result of an Example and a comparative example, (a) is an Example, (b) is a figure which shows a comparative example. It is sectional drawing of the front tube and the former tube of the conventional baton (comparative example). It is a figure which shows the calculation method of the cross-sectional secondary moment (I) in the bending strength test of the rod-shaped body for guards concerning this invention.

  The baton according to the present invention will be described with reference to the drawings. In explaining the present invention, a person (operator) with a baton shook the baton and hit the object is expressed as “hitting”, and the force is expressed as “hitting force”. The damage received by an object (or person) is expressed as “impact”, and the force is expressed as “impact force”.

  The guard rod-like body (1) according to the present invention is composed of a cylindrical rod-like body (2), and a groove (3) is provided on the inner wall of the rod-like body (2). The shape of the groove (3) will be described based on the baton (4).

FIG. 1 is a view showing a first embodiment of a baton according to the present invention. The baton (4) according to the present invention includes a rod-shaped body (2), a grip portion (5) provided at one end of the rod-shaped body (2), and a gap between the grip portion (5) and the rod-shaped body (2). And a flange (6) extending outward in the radial direction of the rod-like body (2).
A top ball (7) is screwed to the tip of the rod-like body (2) which is one end side of the baton (4). The other end (grip part (5) side) of the baton (4) has a bottom cover (8). Moreover, the bottom cover (8) may have a crusher function.

A groove (3) is provided on the inner wall of the rod-like body (2). A groove part (3) consists of a spline shape provided with two or more continuously or discontinuously along the axial direction of a rod-shaped body (2) and the circumferential direction of a rod-shaped body (2).
FIG. 2 shows a cross-sectional view along line AA of the baton according to the first embodiment. As shown in FIG. 2, the cross section of the groove (3) has a round shape (FIG. 2 (a)), an involute shape (FIG. 2 (b)), a square shape (FIG. 2 (c)), or a trapezoidal shape ( 2 (d)). At this time, when the cross section of the groove (3) is a square shape (rectangular shape), the rib (projection) between the groove and the groove is trapezoidal, and the cross section of the groove (3) is trapezoidal. In this case, the rib has a square shape (rectangular shape).

When the cross-sectional shape of the groove portion (3) is configured as a round shape, the round shape is not particularly limited, but a semicircular shape, an elliptical shape, or the like is preferably used. Thereby, the concentration of stress applied to the groove (3) can be relaxed.
When the cross-sectional shape of the groove (3) is a trapezoidal shape, the bottom of the groove (3) is not particularly limited, but is preferably an arc.
Moreover, since stress tends to concentrate on the corner | angular part (9) of a groove part (3), it is preferable that a corner | angular part (9) is a round shape.
By setting it as above-described structure, the stress concerning the corner | angular part (9) of a round shape and trapezoid shape shown by FIG. 2 can be relieve | moderated. Further, by making the corner (9) round, it is possible to further relieve the stress applied to the corner (9), and it is preferable that the radius of the corner (9) is larger. The groove portions (3) are preferably provided at equal intervals in the circumferential direction in a cross-sectional view, and the number, depth, width, and the like of the grooves can be appropriately changed.
Further, the cross section of the groove (3) may be a tapered surface such that the width of the groove (3) becomes narrower or wider as it goes from the radially inner side to the outer side of the rod-like body (2).

The baton (4) according to the present invention can reduce the weight corresponding to the volume of the groove (3) by providing the groove (3).
As shown in FIG. 2, a plurality of groove portions (3) are provided continuously or discontinuously along the axial direction of the rod-shaped body (2) and in the circumferential direction of the rod-shaped body (2). In other words, since the inner wall is made thin and ribs are provided, the lack of strength of the rod-like body accompanying weight reduction can be supplemented by the rib of the groove portion on the inner wall of the rod-like body, and bending even if the weight is reduced It can be set as the baton (4) which can maintain intensity | strength and the impact force given to a target object.

Moreover, the groove part (3) can be set as the structure provided spirally along the axial direction of the rod-shaped body (2). Fig.3 (a) is a partial longitudinal cross-sectional perspective view of the rod-shaped body at the time of providing a groove part (3) helically. Thereby, it can be set as uneven | corrugated shape by the longitudinal cross-sectional view and a cross-sectional view of a rod-shaped body, and even if it gives an impact from all directions, the warning rod which can endure an impact force can be provided.
When the groove (3) is provided in a spiral shape, the angle formed by the circumferential direction of the rod-shaped body (2) and the groove (3), that is, the lead angle is important. FIG.3 (b) is a figure which shows the lead angle of the groove part (3) with respect to a cross section at the time of a groove part (3) being provided helically. In this case, the lead angle (θ) is preferably 60 ° or more.
On the other hand, when the lead angle (θ) is less than 60 °, the groove portion (3) is close to a form provided in a ring shape in the circumferential direction, and the inner diameter of the rod-like body (2) is limited to the outer diameter of the groove portion (3). It ’s close. As a result, the cross-sectional secondary moment with respect to the axial direction is small, and the bending strength may be smaller than that of the conventional product.

A second embodiment of the baton according to the present invention will be described with reference to the drawings. In addition, about 2nd Embodiment, only a different point from 1st Embodiment is demonstrated, the same code | symbol is attached | subjected about the same structure, and description is abbreviate | omitted. FIG. 4 is a view showing a second embodiment of the baton according to the present invention.
The baton (4) in the second embodiment includes a rod-shaped body (2), a grip portion (5) provided at one end of the rod-shaped body (2), a grip portion (5), and a rod-shaped body (2). And a flange portion (6) provided between them and extending radially outward of the rod-like body (2).
The rod-shaped body (2) includes a main tube (2a), a front tube (2b) that is housed in the main tube (2a) in a removable manner, a front tube (2b), and a main tube (2a) at predetermined positions. And a fixing mechanism (10) for fixing.
Both the front tube (2b) and the main tube (2a) are cylindrical, and each is fixed via a fixing mechanism (10). Further, the inner diameter of the main tube (2a) is larger than the outer diameter of the front tube (2b) because the main tube (2a) and the front tube (2b) slide. Thereby, it can be set as the rod-shaped body for security which can be expanded and contracted. The number of expansion / contraction steps is not particularly limited.

Grooves (3) are provided on the inner walls of the front tube (2b) and the main tube (2a), respectively. Thereby, the baton (1) can reduce the weight corresponding to the volume of the groove (3).
A groove part (3) consists of a spline shape provided with two or more continuously or discontinuously along the axial direction of a rod-shaped body (2) and the circumferential direction of a rod-shaped body (2). A plurality of groove portions (3) are provided continuously or discontinuously along the axial direction of the front tube (2b) and the main tube (2a) and in the circumferential direction of the front tube (2b) and the main tube (2a). In other words, since the thickness of the inner wall is reduced and the rib is provided, the lack of strength of the rod-like body (2) accompanying the weight reduction is caused by the rib of the groove (3) provided on the inner wall of the rod-like body (2). It can be supplemented, and it can be set as the baton (4) which can maintain bending strength and the impact force given to a target object even if it reduces in weight.

FIG. 5 is a cross-sectional view taken along line B-B of the tip of the baton in the second embodiment.
As shown in FIG. 5, the cross section of the groove (3) is rounded (FIG. 5 (a)), involute (FIG. 5 (b)), or square (rectangular) (FIG. 5 (c)), Or it can be set as trapezoid shape (FIG.5 (d)).
When the cross-sectional shape of the groove portion (3) is configured as a round shape, the round shape is not particularly limited, but a semicircular shape, an elliptical shape, or the like is preferably used. Thereby, the concentration of stress applied to the groove (3) can be relaxed.
When the cross-sectional shape of the groove (3) is a trapezoidal shape, the bottom of the groove (3) is not particularly limited, but is preferably an arc.
Moreover, since stress tends to concentrate on the corner | angular part (9) of a groove part (3), it is preferable that a corner | angular part (9) is a round shape.

By setting it as above-described structure, the stress concerning the corner | angular part (9) of a round shape and trapezoid shape shown by FIG. 5 can be relieve | moderated. Further, by making the corner (9) round, it is possible to further relieve the stress applied to the corner (9), and it is preferable that the radius of the corner (9) is larger. The groove portions (3) are preferably provided at equal intervals in the circumferential direction in a cross-sectional view, and the number, depth, width, and the like of the grooves can be appropriately changed.
Further, the side surface of the groove portion (3) may be configured to have a tapered surface such that the width of the groove portion (3) becomes narrower or wider from the radially outer side to the inner side of the leading tube (2b).
In addition, the cross-sectional shape of the groove part (3) of the original cylinder (2a) can be made into the same shape as the cross-sectional shape of the groove part (3) of the original cylinder (2b). Moreover, the cross-sectional shape of the groove part (3) of the front tube (2b) and the main tube (2a) may be the same or different.

The fixing mechanism (10) includes a stopper holder provided on the front tube (2b) and a stop collar provided on the main tube (2a), and fixes the front tube (2b) in a state of protruding from the main tube (2a). Yes. Specifically, a large diameter portion is provided at the rear end portion of the leading tube (2b), and a step portion is provided at the tip portion of the original tube (2a). When the front tube (2b) is pulled, it is locked at the step of the main tube (2a), and the front tube (2b) is prevented from falling off from the main tube (2a).
In addition to this, the fixing mechanism (10) can be locked with the front tube (2b) protruding from the main tube (2a) and rotates the front tube (2b) by a predetermined angle with respect to the main tube (2a). Thus, a configuration including a lock mechanism for releasing the lock can also be adopted.

  The rod-like body (2) of the baton (4) according to the present invention is preferably made of an aluminum alloy, but is not limited thereto, and other than aluminum as long as the same effect as that of an aluminum alloy can be obtained in the tapping force. It is also possible to apply other metals.

  When the weight of the conventional baton is reduced, the strength against the bending strength is insufficient. However, by using the rod-like body (2) described in the first embodiment and the second embodiment, an example to be described later will be described. The bending strength and impact force can be maintained as shown in FIG. Therefore, the present invention can compensate for the lack of strength of the rod-like body (2) due to the weight reduction by the ribs on the inner wall of the rod-like body (2). It is possible to provide a baton (4) capable of giving a sufficient impact force. Moreover, if the above-mentioned purpose is achieved, the outer diameter and inner diameter of the rod-like body (2) are made the same as those of the conventional product, and the shape of the groove (3), the depth of the groove, the number of grooves, etc. are appropriately determined. Settings can be changed.

The guard rod-like body (1) of the present invention can be used as a guard stick . Warning備用rod-shaped body (1) consists of a cylindrical rod-shaped body (2), groove on the inner wall of the rod-shaped body (2) (3) is provided. The configuration of the groove (3) is as described for the baton (4).
With the above configuration, the groove (3) is provided on the inner wall of the rod-like body (2), that is, the inner wall is thinned and the rib is provided, so that the rod-like body (2) accompanying weight reduction. Insufficient strength can be compensated for by the ribs on the inner wall of the rod-like body, and a warning cane can be provided that can maintain bending strength and impact force applied to the object even if the weight is reduced. Moreover, although the length of a warning stick is not specifically limited, 90 cm, 120 cm, 180 cm, etc. are utilized suitably.

  The effect of the present invention will be made clearer by showing an embodiment related to a baton according to the present invention. However, the present invention is not limited to this embodiment.

The baton used in the present embodiment is the telescopic baton shown in FIG. The front tube (2b) and the main tube (2a) are made of an aluminum alloy. The total length of the baton (4) when extended is 650 mm, the length of the front tube (2b) is 305 mm, the length of the main tube (2a) is 198 mm, and the length of the grip portion (5) The length is 147 mm.
<Example>
The inner wall of the front tube (2b) and the main tube (2a) has a square groove (3) as shown in FIG. 2 (c). A groove was provided on the inner wall of the original tube (2a) (outer diameter 27.6 mm, inner diameter 20 mm) so as to have a large diameter 22.5 mm and a small diameter 20 mm. The number of grooves is 16, and each groove is provided at equal intervals in the circumferential direction. Grooves were provided on the inner wall of the front tube (2b) (outer diameter: 19 mm, inner diameter: 13 mm) so as to have a large diameter of 15 mm and a small diameter of 13 mm. The number of grooves was 13, and each groove was provided at equal intervals in the circumferential direction.
<Comparative example>
The front tube (2b) and the main tube (2a) have a cylindrical shape as shown in FIG. 8, and do not have a groove. The outer diameter and inner diameter of the front tube (2b) and the main tube (2a) were the same as in the example, and the weight was 480.04 g.

ここで、Δｔは衝突する双方の物体の材質や重量によって異なるが、各々の材質と重量が均一な物体が衝突する場合、Δｔは叩打力の大きさに関係なく各々の物体間において固有の数値になると考えられる。
また、Δｔは、叩打速度ｖから速度がゼロになるまでの時間で、一般的には時間を横軸、衝撃力を縦軸とした場合デルタ関数に似たカーブを描くが、略直線の傾きを示す。従って、停止距離をＬ［ｍ］とすると、Δｔは式（２）で表すことができる。

従って、（１）式は、次の式（３）で表すことができる。

本発明において、衝撃力は式（３）を用いて算出することとする。 <Measurement of impact force>
The measuring method of impact force is as follows.
A urethane cushion was installed as an object on a surface plate having a height of 70 cm, and a subject swung down a baton to give an impact force to the object. At this time, the impact force in the case where the same subject swings down the object with full force each time with respect to the baton of the example and the comparative example was calculated.
The impact force immediately before the collision is F [N], the weight of the baton is m [kg], the batting speed of the baton taken by the high-speed camera is v [m / s], and the batting speed after hitting the object is Assuming that the time until reaching zero is Δt [s], F [N] can be obtained from Equation (1) as follows.

Here, Δt varies depending on the material and weight of both objects that collide, but when an object of uniform weight with each material collides, Δt is a unique value between the objects regardless of the magnitude of the tapping force. It is thought that it becomes.
Δt is the time from the hitting speed v until the speed becomes zero. In general, when the time is plotted on the horizontal axis and the impact force is plotted on the vertical axis, a curve similar to a delta function is drawn. Indicates. Therefore, when the stop distance is L [m], Δt can be expressed by the equation (2).

Therefore, the equation (1) can be expressed by the following equation (3).

In the present invention, the impact force is calculated using Equation (3).

  Table 1 shows the results of measuring the weight of the batons of the examples and comparative examples. The unit is [g].

An Example is a structure which has a groove part (3) in the front cylinder (2b) and the former cylinder (2a) of a comparative example. As a result, the weight of the original cylinder (2b) was 138.8 g in the comparative example, whereas the weight in the example was 120.8 g. Further, the weight of the original cylinder (2) was 220.2 g in the comparative example, and 182.2 g in the example.
Therefore, the batons of the examples were able to reduce the weight corresponding to the volume of the groove (3) by providing the groove (3).

<Measurement of impact force>
The impact force was measured using the batons of the example and the comparative example. Table 2 shows the examples, Table 3 shows the hitting speeds until the comparative example was swung down and collided with the object, and FIG. 7 shows the impact force measurement results of the examples and comparative examples. The time in the table indicates the time until the batting speed of the baton becomes zero.
In this measurement, the time from hitting the object of Example and Comparative Example until the hitting speed became zero was Δt = 0.01 [s] (see FIG. 6). Moreover, the average value of the tapping speed until it collides with a target object by swinging down a baton at the bottom of Tables 2 and 3 is shown.

From the results of Tables 2 and 3, the average hitting speed of the example was 30.6 [m / s], and the average hitting speed of the comparative example was 28.6 [m / s].
From the weight of each baton in Table 1 and the measurement results of the average hitting speed of the examples and comparative examples, the impact force of the examples and comparative examples was calculated using the formula (3), and the impact forces of the two were compared. However, (Example) / (Comparative Example) was 0.99.

  From this result, even if compared with the conventional product (comparative example), the impact force of the baton according to the present invention (example) did not change. Therefore, it was shown that the same impact force as before can be applied even if the weight is reduced.

撓み量が小さい、即ち断面二次モーメントが大きい方が曲げ強度が強い警棒であり、長さＬが同じで且つ材質が同じ場合、警棒の強さは断面二次モーメントに依存する。この場合、警棒の外径をＤ、内径をｄとすると、断面二次モーメントは式（５）により示すことができる。

式（５）を用いて本発明に係る図２の（ａ）に示す断面形状を有する警棒（４）（実施品：外径２６．３５ｍｍ、内径２０ｍｍ）と、図８に示す溝部を有さない図２の（ａ）と断面積が同じである警棒（比較品：外径２４．５ｍｍ、内径２０ｍｍ）と、図８に示す溝部を有さない従来使用されている警棒（従来品：外径２６．３５ｍｍ、内径２０ｍｍ）の断面二次モーメントを求めた。従来品を１００としたときの実施品及び比較品の計算結果を表４に示す。 Comparison of cross-sectional secondary moments The cross-sectional secondary moments (hereinafter also referred to as I) of the embodiment and comparative example of the baton according to the present invention were calculated. This is because it serves as a guide for the bending strength of the baton according to the present invention.
For example, in the beam at the fixed end shown in FIG. 9, the amount of deflection (δ) is expressed by the following equation (4), where F is the magnitude of the force applied to the free end, L is the length of the baton, and E is the Young's modulus. Can show.

The smaller the amount of bending, that is, the greater the cross-sectional secondary moment is, the greater the bending strength, the greater the bending strength. When the length L is the same and the material is the same, the strength of the bat depends on the cross-sectional secondary moment. In this case, when the outer diameter of the baton is D and the inner diameter is d, the cross-sectional secondary moment can be expressed by the equation (5).

Using the formula (5), there is a baton (4) (implemented product: outer diameter 26.35 mm, inner diameter 20 mm) having the cross-sectional shape shown in FIG. 2 (a) in which the cross-sectional area is the same as that shown in FIG. 2 (comparative product: outer diameter 24.5 mm, inner diameter 20 mm) and a conventionally used warning rod (conventional product: outer) having no groove as shown in FIG. The cross-sectional secondary moment of the diameter 26.35 mm and the inner diameter 20 mm was determined. Table 4 shows the calculation results of the implementation product and the comparison product when the conventional product is 100.

  As shown in Table 4, the cross-sectional secondary moment of the baton (4) of the present invention is inferior to that of the conventional product, but is a reduction rate within a range where there is no problem in strength, and is larger than that of a comparative product having the same cross-sectional area. I was able to confirm. Thereby, it was confirmed that the baton (4) according to the present invention can be compensated by providing a groove portion with respect to a decrease in the secondary moment of inertia accompanying weight reduction. Even in the case of a baton (FIG. 4) consisting of a main tube and a front tube, the cross-sectional secondary moment of the front tube is proportional to the cross-sectional secondary moment of the main tube. It is possible to compensate by providing a groove in the front tube.

  The baton according to the present invention is lighter, so that the hitting speed is higher than that of the conventional baton. Therefore, it was found that the impact force applied to the object by the baton according to the present invention is equal or increased as compared with the conventional product. In addition, since the baton according to the present invention can maintain the bending strength even when the weight is reduced, the lack of strength of the rod-like body accompanying the weight reduction can be supplemented by providing a groove on the inner wall of the rod-like body. Furthermore, the same effect can be expected with respect to a police stick.

  The rod-shaped body for security according to the present invention is suitably used for a rod or a wand used as a defense tool or a guard for police officers or guards.

1 surveillance rod-like body 2 rod member 2a source tube 2b leading tube 3 groove 4 baton 5 grip portion 6 the flange portion 10 fixed Organization

Claims (3)

A rod-shaped body for security composed of a rod-shaped body made of a cylindrical aluminum alloy ,
A groove is provided on the inner wall of the rod-shaped body ,
The groove portion has a spline shape that is provided in a plurality of continuously or discontinuously along the axial direction of the rod-shaped body and in the circumferential direction of the rod-shaped body,
The cross section of the groove portion perpendicular to the axis of the rod-shaped body is round.
This is a security bar.   The said groove | channel part is provided in the spiral shape along the axial direction of the said rod-shaped body, The rod-shaped body for security of Claim 1 characterized by the above-mentioned. A warning stick or a warning stick provided with the guard rod-like body according to claim 1 or 2.

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