JP3202459B2 - A baton using a rod-shaped telescopic mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention is applicable to storage and carrying
Its length can be shortened, while it can be extended to a corresponding length when used, and when extended, it can withstand a strong pressing force in the axial direction, and when stored The present invention relates to an extendable telescopic wand that can be shortened by extremely simple operations.

[0002]

2. Description of the Related Art When storing or carrying, the length is shortened, and when used, it is extended and used in the form of one or several rods. A stick having a function is called a telescopic stick) can be seen in many of those used in daily life.

[0003] Typical examples thereof include a handle of a folding umbrella and a tripod of a camera. These usually adopt a structure in which a hollow middle cylinder is inserted into a multi-stage hollow outer cylinder, and when extended, a protruding member provided on the middle cylinder fits into a notch hole or a recess provided in the outer cylinder. The structure is such that the extended state is maintained by combining them. When shortening this, the connection between the cylinders is released by applying a slightly stronger force in the axial direction or by pushing the protruding member inward with a finger or the like and pushing it into the cylinder. And insert the middle cylinder into the outer cylinder.

[0004]

The telescopic rod having the telescopic mechanism as described above will be described below with reference to a baton used by police. In a conventional telescopic wand, for example, in the case of a tripod of a camera, it cannot be shortened without operating a plurality of locking portions one by one due to the structure of the locking mechanism. In the case of a structure often used in a conventional folding umbrella or the like in which a spherical projection is fitted to an outer cylinder, it can be shortened at once by applying a force, but it can be shortened in the axial direction when it is extended. Is not so strong, and there is a problem that stable strength as a rod-shaped body cannot be obtained. Further, in the case of such a structure, there is also a problem that the skin of the fingertip is caught in the gap when shortening.

Conventionally, a baton used by a police officer or the like for self-defense and suppression has been of a single wooden structure.

[0006] This is about 60 cm in length, so it is inconvenient for police officers to carry around at all times,
In particular, when sprinting, it was necessary to prevent the baton on the waist from being shaken with one hand. For this reason, there has been a demand for a baton that can be kept in a shortened state when being carried, quickly extended to a desired length when used, has a certain strength in the extended state, and can be shortened by a simple operation.

However, the conventional telescopic rod locking mechanism cannot satisfy the different requirements of being able to extend and shorten by a simple operation and satisfying sufficient strength in the extended state for the above-mentioned reason. could not. SUMMARY OF THE INVENTION The present invention has been made in view of the above-described conventional problems, and has as its object to provide a baton that has a locking mechanism capable of obtaining a strong locking force when extended, and can be shortened by an extremely simple operation. I have.

[0008]

According to the present invention, there is provided a first rod-shaped body (base cylinder) having an arbitrary cross-sectional shape, and the first rod-shaped body is housed in the first rod-shaped body and protrudes out of the rod-shaped body near a rear end. A second rod-shaped body having an arbitrary cross-sectional shape (an intermediate cylinder) having a locking portion
And a third rod-shaped body (a front rod) having a guide portion which is accommodated in the rod-shaped body and has a guide portion at its rear end which engages with the locking part of the second rod-shaped body and accommodates the locking part in the rod-shaped body. It is a rod-shaped expansion and contraction mechanism,

A middle cylinder having a cylindrical shape, a middle cylinder housed in the base cylinder and having a locking portion near the rear end and capable of protruding outside the cylinder, and a middle cylinder housed in the middle cylinder and having a rear end portion. A wand having a leading rod having a guide portion which engages with the locking portion of the middle cylinder and accommodates the locking portion in the cylinder and a locking portion capable of protruding outside the cylinder.

[0010] The invention of claim 1 is a rod-shaped expansion and contraction mechanism for accommodating the locking portion in the rod-shaped body by pressing the inclined portion formed by connecting the cylindrical guide portion to the locking portion. In the telescopic wand described above, a permanent magnet is arranged at the rear end of the base cylinder or at the base of the middle cylinder.

[0011]

The first rod and the second and third rods expand and contract like a telescope. The second rod-shaped body has a locking portion that can protrude outside the rod-shaped body, and when extended, the locking portion protrudes out of the rod-shaped body, and the second rod-shaped body is separated from the first rod-shaped body by the first rod-shaped body. It restricts the fitting inside the rod. A similar locking means is also provided on the third rod-shaped body to regulate the third rod-shaped body from being fitted inside the second rod-shaped body, but at the rear of the third rod-shaped body,
There is a guide portion, and when the bar is reduced, the guide retreats and engages with the locking portion provided on the second bar to accommodate the locking portion inside the rod. Therefore, the third
When the locking means of the rod-shaped body is released and the third rod-shaped body is slid into the second rod-shaped body, the locking means of the second rod-shaped body is automatically opened and the inside of the first rod-shaped body is released. And slide into it. With such a structure, simply releasing the regulating means of the third rod-shaped body automatically releases the other regulating means, and the rod-shaped body can be reduced with one touch. This configuration is not limited to three stages, and can be applied as it is even if there are more stages, and it is possible to reduce the entire length of the bar by simply removing the restriction on the bar corresponding to the third bar Can be.
Further, the bar is not reduced unless the third regulating means is released, so that the elongated bar can maintain sufficient strength. Therefore, even when used for a baton, sufficient strength can be obtained, and extension and contraction can be performed instantaneously.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example of a bar-shaped body expansion and contraction mechanism according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a state in which a base cylinder that is a first rod-shaped body and a middle cylinder that is a second rod-shaped body are fixed by a locking mechanism, and FIG. 2 shows a front rod that is a third rod-shaped body. Shows a state in which the lock mechanism provided in the middle cylinder, which is the second rod-shaped body, is released and the locking mechanism provided with the middle cylinder is released.

As shown in FIG. 1, the middle cylinder 5 has a cutout hole 20 near one end thereof. Then, when the middle cylinder 5 is pulled out of the base cylinder 1, the movement of the middle cylinder lid 7 in the forward direction is stopped by the locking tube 6 provided at the tip of the base cylinder, and stops. At this time, it is possible to make a circular motion within a certain range around the fulcrum shaft 19, and the spring 11
Is fixed to the base cylinder by a locking mechanism engaged so as to fit into the notch hole 20 of the middle cylinder.

When the front rod 12 is housed in the middle cylinder 5, the unlocking member 14, which is a guide provided at the rear end of the front rod 12, is moved by the automatic locking projection 8 By applying a force in the direction of pulling out the protrusion 18 of the automatic locking projection 8 that is pressed into the cutout hole 20 of the middle cylinder, thereby pulling out the base cylinder. The fixed state between 1 and the middle cylinder 5 is released. Therefore, when the third rod-shaped body 12 is released and retracted, the second rod-shaped body is automatically released, and the whole rod-shaped body can be reduced with one touch. If the configuration is configured in multiple stages, no matter how many stages there are,
Since all the restrictions can be released only by releasing the restriction on the rod-shaped member, the one-touch reduction can be similarly performed.

FIGS. 3 and 4 show an embodiment in which the present invention is configured as a baton. FIG. 3 is an external view and FIG. 4 is a sectional view. In the figure, 1 is a base cylinder, 2 is a rear end cap, 3 is a permanent magnet, 4 is a collar body, 5 is a middle cylinder, 6 is a rear locking tube for a middle cylinder, 7 is a lid for a middle cylinder, 8 Is an automatic locking projection, 9 is a bearing, 1
0 indicates a through hole for an automatic locking projection.

Further, 11 is a coil spring, 12 is a front rod,
13 is a top ball, 14 is an unlocking guide member (guide short tube), 15 is a push-in locking projection, 16 is a front locking tube, 17 is a kick spring, and 18 is a projection of an automatic locking projection. , 19 is a fulcrum shaft of the automatic locking projection, 20 is a cutout hole of the middle cylinder, 21 is a push-in locking projection
, 22 represents a notch hole in the front rod. Hereinafter, this embodiment will be described with reference to FIG.

The embodiment shown in FIG. 1 is made of a high-strength aluminum alloy round bar, and a base cylinder having a length of about 210 mm accommodates a middle cylinder of about 200 mm, and a length of about 145 mm in the middle cylinder. The retracted state is about 234 mm in total length, and about 530 mm in the extended state. A rear end cap 2 is screwed to the base tube 1, and a permanent magnet 3 is fixed to a substantially central portion of the rear end cap 2. Further, a one-character-shaped flange body 4 provided with a cutout hole for inserting a hanging string at a predetermined position of the base cylinder 1 is provided. Further, a rear locking tube 6 for locking the middle cylinder 5 is inserted into an inner peripheral portion of the distal end of the base cylinder 1.

The rear locking tube 6 prevents the end portion of the base cylinder 1 from being worn or damaged by the automatic locking projection 8, prevents the middle cylinder 5 from dropping off, and additionally has one end of the middle cylinder 5. An iron cover 7 is screwed to the portion.

The support body 9 holds the self-locking projection 8 and is engaged with the end of the middle cylinder 5, and has a through hole for supporting a shaft on which the self-locking projection 8 moves circularly. Have. A caulking pin is inserted and fixed in a through hole provided in the support body 9 and a through hole 10 provided in the automatic locking projection 8, and the automatic locking projection 8 is slidably connected.

A coil spring 11 is inserted into a cutout provided in the support 9. The top of the coil spring 11 is restrained at the upper part of the square cutout groove provided on the automatic locking projection 8, and the bottom of the coil spring 11 is restrained at the inner periphery of the middle cylinder 5. The square cutout groove has a convex shape, and the central projection is inserted into the coil spring 11, so that the coil spring 11 does not fall off. The coil spring 11 only needs to elastically urge the self-locking projection 8 and is not limited to the coil spring.

The self-locking projection 8 held by the support body 9 is relaxed in the middle cylinder 5 by the coil spring 11, and the projection 18 of the self-locking projection is fitted into the cutout hole 20 of the middle cylinder 5. It is. The base cylinder 1 and the middle cylinder 5 are firmly fixed by the second stop mechanism (A) formed by these.

A top ball 13 coated with rubber is screwed to the front end of the front rod 12, while a middle cylinder 5 is mounted to the rear end of the front rod.
The guide short tube 14 having a function of releasing the second stop mechanism (A) by pressing the inclined portion of the automatic locking projection 8 of the second stop mechanism (A) provided in the second stop mechanism (A) is fixed.

At the front of the guide short tube 14, a front locking tube for preventing the middle tube 5 from falling off and preventing the end of the middle tube 5 from being worn or damaged by the push-in locking projection 15 16 is inserted so that the tip rod 12 can slide freely. A push-in locking projection 15 is fitted into a position of a front rod at the tip of the front locking tube 16.

The front end of the push-in locking projection 15 is pierced, the tip of the kick spring 17 is fitted into the hole, and the rear end of the kick spring 17 is fixed to the bottom of the front rod 12 to form the first. A stop mechanism (B) is formed.

When this is used, urgency is often required, and it is possible to extend the entire length in a single stroke. In order to shorten and store, press down the push-in locking projection 15 of the tip rod 12,
When the leading rod 12 is slid and stored inside the middle cylinder 5, the guide short pipe 14 abuts on the inclined portion of the automatic locking projection 8 and accommodates this inside the cylinder, and automatically releases the locked state. Therefore, the middle cylinder 5 can also be arbitrarily accommodated inside the base cylinder 1. That is,
With this mechanism, the multi-stage rod-shaped body can be automatically shortened and stored simply by the user pushing and releasing the locking mechanism of the front rod. Even if a strong force such as pressing in the axial direction is applied during extension without releasing the first stop mechanism, since each locking mechanism is working, the tip rod may be unintentionally stored in the middle cylinder. In addition, since the middle cylinder is not housed in the base cylinder and the strength as a rod is maintained in the extended state, it can withstand severe use conditions.

In the telescopic wand described above, the permanent magnet 3 at the rear end cap of the base cylinder, when the middle cylinder is accommodated in the base cylinder,
By adsorbing to the lid of the middle cylinder, the middle cylinder is prevented from accidentally coming out of the base cylinder. A similar configuration can be provided between the tip rod and the middle cylinder.

Although the baton using the stop mechanism (locking mechanism) according to the embodiment of the present invention has been described above, the present invention is not limited to the stop mechanism according to the embodiment.
Another configuration in which the stop mechanism of the second rod is released by the guide of the third rod is included. Its application range is
It is not limited to a baton, and can be applied to any article which is usually shortened, stored or carried, and extended when used. For example, a stretchable wand, a tripod, and the like are preferable examples to which the present invention is applied.

[0028]

As described above, the telescopic rod of the present invention can form a strong rod when it is extended. There is an advantage that the rod-shaped body can be extended and shortened with one touch, and a structure convenient for storage and carrying can be obtained.

[Brief description of the drawings]

FIG. 1 is a view for explaining the operation of a bar-shaped body expansion and contraction mechanism of the present invention, and is a cross-sectional view of a state in which the bar is fixed by a locking mechanism.

FIG. 2 is a cross-sectional view showing a state where a locking mechanism of FIG. 1 is released.

FIG. 3 is a diagram showing an embodiment in which the present invention is configured as a baton, and is an external side view.

FIG. 4 is a partial sectional view of the baton of FIG. 3;

[Description of Signs] 1 ・ ・ ・ Base cylinder 2 ・ ・ ・ Rear end cap 3 ・ ・ ・ Permanent magnet 4 ・ ・ ・ Flange 5 ・ ・ ・ Middle cylinder 6 ・ ・ ・ Rear locking tube 7 ・ ・ ・ Middle Cylinder lid 8 ・ ・ ・ Automatic locking projection 9 ・ ・ ・ Supporting body 10 ・ ・ ・ Automatic locking projection piece through-hole 11 ・ ・ ・ Coil spring 12 ・ ・ ・ Point rod 13 ・ ・ ・ Top ball 14・ ・ ・ Lock release member (guide short pipe) 15 ・ ・ ・ Push-in locking protrusion 16 ・ ・ ・ Front locking tube 17 ・ ・ ・ Kick spring 18 ・ ・ ・ Protrusion of automatic locking protrusion 19 ················································································

Claims (2)

(57) [Claims] 1. A hollow first rod having an arbitrary cross-sectional shape,
A hollow second rod-shaped body having an arbitrary cross-sectional shape having a locking portion that is housed in the first rod-shaped body and is protrudable outside the rod-shaped body in the vicinity of the rear end, and is housed in the second rod-shaped body and has a rear end. In a three-stage telescopic rod of a third rod having a hollow arbitrary shape, which engages with the locking portion of the second rod and accommodates the locking projection in the rod, The end of the second rod-shaped body is axially mounted on the locking part support of the stop mechanism independently provided inside the rear end, and presses the inclined part of the self-locking protruding piece biased by the spring. A baton that uses a rod-shaped telescopic mechanism to which a short guide tube is fixed to push and pull the self-locking projection into and out of the second rod. 2. The stick according to claim 1, wherein a permanent magnet is fixed to a rear end of the first rod or a base of the second rod.