JP2005047439A - Tank tightening mechanism, tank harness and buoyancy adjustment jacket for scuba diving - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact tank tightening mechanism capable of certainly mounting an air tank even by a user having no physical strength such as a woman, a tank harness provided with this and a buoyancy adjustment jacket. <P>SOLUTION: The tank tightening mechanism in scuba diving is provided with a pair of buckles 10 having a bolt insertion part 14 formed on buckle bodies 10a, 10b connected to an end of a belt B for tightening a tank T; an insertion hole 15 provided on the insertion part 14 of the buckle bodies 10a, 10b; a bolt N penetrated through the insertion hole 15 and having a head part Na abutted on an outer end surface of the bolt insertion part 14 formed on the buckle body 10a and a male screw part Nb projected to the outside the bolt insertion part 14 formed on the buckle body 10b; and a nut member 16 thread-engaged with the male screw part Nb of the bolt N. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a tank tightening mechanism used when an air tank used in scuba diving is attached to a tank harness or a buoyancy adjustment jacket for scuba diving, a tank harness including the tank tightening mechanism, and a buoyancy adjustment jacket for scuba diving. It is about.

Conventionally, when an air tank used in scuba diving is attached to a predetermined position on the back of a diver, the following method is used.
For example, as disclosed in Patent Document 1, a nylon belt attached to the back of a buoyancy adjustment jacket is tightened with a resin buckle, or as disclosed in Patent Document 2, There is also a type in which the air tank is tightened using a metal band and buckle attached to a harness carried on the back.
JP 2002-240784 A JP 2001-315589 A

The systems described in Patent Documents 1 and 2 fasten the belt to the air tank by a lever or buckle provided on the end of the belt attached to the buoyancy adjustment jacket or the tank harness. Therefore, in order to fix the tank firmly, it is necessary to lengthen the lever and buckle, set the lever ratio large, and tighten the slight margin by operating the lever and buckle.
However, if the lever ratio is set to be large as described above, there is not enough room for the belt to be tightened as described above, so it is difficult to perform the setting work of passing the air tank through the belt, and the buckle and lever become large, which is in the way. There is a problem of becoming.

  In addition, since a considerable amount of force is required to operate the buckle lever, it is very difficult for users with weak arms such as women to attach the air tank to the tank harness or buoyancy adjustment jacket by themselves. There are also challenges.

  Furthermore, when a nylon belt is used, the length of the belt at the time of water absorption is longer than that at the time of drying, so when installing an air tank on land, tighten it in anticipation of this extension, The belt must be pre-absorbed before tightening. If such an operation is neglected, there is a fatal problem in diving that there is a possibility that the air tank may drop from the attachment part in water and the respiration regulator may come off.

  Therefore, the present invention can easily set an air tank for scuba diving, and even a user who does not have arm strength, such as a woman, can securely attach an air tank, and a compact tank tightening mechanism and The object is to provide a tank harness and a buoyancy adjustment jacket.

  The present invention relates to a tank fastening mechanism in a tank attachment part of a scuba diving tank harness or a scuba diving buoyancy adjustment jacket, wherein a pair of bolts is formed in a buckle body connected to an end of a belt for fastening the tank. A buckle, an insertion hole provided in each bolt insertion portion of the buckle body, and the head is in contact with an outer end surface of the bolt insertion portion formed in one buckle body. The male screw part includes a bolt projecting outward from the bolt insertion part formed on the other buckle body, and a nut member screwed into the male screw part of the bolt.

In this invention, between the head of the bolt and the outer end surface of the bolt insertion portion formed in one buckle body, or the outer end surface of the bolt insertion portion formed in the nut member and the other buckle body And an elastic member interposed between them.
As a result, even if the belt extends due to water absorption and the belt wound around the air tank is loosened, the belt is tightened in the tightening direction of the air tank by the elastic member, so that the air tank is not likely to fall off the belt. .

Further, at least one of the bolt and the nut member is provided with a handle portion formed wide so that the bolt or the nut member can be easily rotated when rotated about the axis.
Thereby, the fastening operation | work of a buckle can be performed easily.
Further, the handle portion is rotatably attached to a head portion or a nut member of the bolt, and is rotated in the belt direction to close a gap between the bolt and the belt. .
As a result, the handle portion can be retracted after the bolt tightening operation is completed, so there is no possibility that the handle portion, which is an extra protrusion, will be caught by a fishing net or the like during diving.

Furthermore, it is preferable that the elastic member is a coil spring.
Thereby, a volt | bolt can be arrange | positioned integrally with an elastic member, and it can be set as a compact tank fastening mechanism.

Furthermore, the insertion hole formed in the bolt insertion portion of at least one of the buckle bodies opens to the edge of the bolt insertion portion, and the bolt is provided so as to be detachable from the bolt insertion portion. It is characterized by that.
Moreover, the bolt insertion part of at least one said buckle main body is provided in the said buckle main body so that attachment or detachment is possible with the said bolt inserted.
Further, the bolt insertion portion of the one buckle body can be detached from the buckle body in a direction away from the tank to which the one is attached.
As a result, the belt can be easily tightened onto the air tank.

In addition, the belt connecting portion of at least one of the buckle bodies constituting the buckle includes an engaging portion provided on the buckle body, and an engagement portion attached to the buckle body and detachably locked to the engaging portion. And a stop member.
Further, the engaging portion is opposite to the tank of the standing piece at the opposed position of the standing piece formed on both ends of the buckle body in the direction orthogonal to the tightening direction and the facing surface of the standing piece. The engaging member is provided so as to open to the end face on the side, and both ends of the locking member are provided so as to be able to enter into the engaging grooves of both standing pieces from the opening. .
As a result, a belt set to a predetermined length around the buckle body can be wound around the air tank, so that the belt can be easily fastened to the air tank.

Further, the engagement groove is provided so as to be inclined in a direction in which the belt is loosened as the locking member enters from the opening to the back.
Accordingly, the tightening operation can be performed in the state where the belt wound around the air tank is most loosened, so that even if the belt is loosened, there is no possibility that the belt will come off the buckle body.

Furthermore, a plurality of pairs of the engaging grooves are provided in the upright piece with a required interval.
Thereby, even when attaching air tanks of different sizes, it is not necessary to change the length of the belt attached to the buckle body, so that the work of attaching the air tank is facilitated.

Another aspect of the invention is a scuba diving tank harness to which any of the tank tightening mechanisms described above is attached.
Still another invention is a buoyancy adjustment jacket for scuba diving in which any one of the above-described tank tightening mechanisms is attached.
Thus, the air tank can be securely and easily attached to the tank harness and the buoyancy adjustment jacket.

  According to the present invention, when attaching an air tank to a scuba diving tank harness or a buoyancy adjustment jacket for scuba diving, when tightening the air tank with a belt or the like, the tightening work is finished by screwing. Since it can be performed, even a user who does not have arm strength, such as a woman, can securely tighten the belt to the air tank. Further, since a lever or the like is not necessary, the tank tightening mechanism can be made compact.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view showing a state in which an air tank is attached to a buoyancy adjustment jacket (hereinafter referred to as a BC jacket). FIG. 2 is an enlarged front view of a portion A in FIG. 3 is a cross-sectional view taken along line AA in FIG. 2 and 3, for convenience of explanation, a state where a belt is passed through the buckle body 10 a is shown, and a state where no belt is passed through the buckle body 10 b is shown.

First, a pair of buckles 10 for fixing the belt B attached to the BC jacket J for attaching the air tank T to the BC jacket J will be described.
Each of the buckle bodies 10a and 10b constituting the pair of buckles 10 includes belt connecting portions 12 and 12 to which end portions of belts B and B are connected, and bolt insertion portions 14 in which insertion holes 15 and 15 are formed, 14.

As shown in FIGS. 2 and 3, the belt connecting portions 12 and 12 of the buckle bodies 10 a and 10 b are provided with belt through holes 12 a and 12 a for passing belts B and B that tighten the outer periphery of the air tank T. . Further, folding belt through holes 12b and 12b for folding the belts B and B are formed through the bolt insertion portions 14 and 14, respectively.
When connecting the front end portion of the belt B to the buckle body 10a, the front end portion of the belt B is inserted through the belt through holes 12a and 12a, and then folded back through the folding belt through hole 12b. Further, the belt through hole 12a , 12a is inserted again as appropriate. Thereby, the front-end | tip part of the belt B wraps inside the belt B, and when it is tightened, it is reliably prevented from coming off. Similarly, the tip of the belt B can be connected to the buckle body 10b.

  Each buckle body 10a, 10b has a substantially L-shaped cross section with the belt connecting portion 12 and the bolt insertion portion 14, and is arranged so that both bolt insertion portions 14, 14 face each other. Further, both end portions of each bolt insertion portion 14 and the belt connecting portion 12 are connected by upright pieces 13 and 13. Thus, the buckle body 10a, 10b has a substantially triangular outer shape by the belt connecting portion 12, the standing piece 13, and the belt insertion portion 14 (FIG. 3), so the belt B is firmly attached to the air tank T by the buckle 10. The buckle bodies 10a and 10b are not broken even when tightened to each other, and can be firmly tightened, and the durability of the tank tightening mechanism can be improved.

  The bolt insertion portions 14 and 14 are provided with insertion holes 15 and 15 through which the bolts N are inserted. As shown in FIG. 1, the insertion holes 15 and 15 are provided in the middle of the bolt insertion portions 14 and 14, and pass through the bolt insertion portions 14 and 14.

  The bolt N is inserted through both the insertion holes 15 and 15. As the bolt N, a general bolt composed of a bolt head Na and a male screw portion Nb can be used. The head portion Na of the bolt is formed to have a diameter larger than the opening diameter of the insertion hole 15 and abuts against one bolt insertion portion 14 from the outside. In addition, as shown in FIG. 2, the form which attached the cap nut to the one end part of the external thread part Nb is good also as the head part Na of a volt | bolt, and it does not specifically limit.

A nut member 16 is screwed into the male thread Nb of the bolt N. The nut member 16 is connected to a handle portion 18 for facilitating turning the nut member 16 when tightening.
The handle portion 18 is formed so as to gradually become wider in a direction away from the nut member 16 side. As shown in FIGS. 2 and 3, the handle portion 18 is rotated around the connection shaft 17 (in the direction of the arrow in FIG. 3) by connecting the handle portion 18 to the rear end portion of the nut member 16 via the connection shaft 17. It can be rotated. In the rotation mechanism of the handle portion 18, if a click mechanism or a stopper mechanism (both not shown) is employed between the connecting shaft 17 portion and the handle portion 18, the handle portion 18 that has been tilted to the air tank T side. (FIG. 3) is convenient because it does not rotate in the reverse direction unexpectedly.

Note that the handle portion 18 may be rotatably attached to the head of the bolt N, and the bolt N may be rotated by the handle portion 18.
In the present embodiment, a coil spring 20 as an elastic member is inserted between the nut member 16 and the bolt insertion portion 14.

A method for attaching the air tank T to the BC jacket J will be described.
First, the buckle bodies 10a and 10b are opposed to each other, and the bolt N is inserted and temporarily tightened, that is, the belt B is in an annular shape. After the air tank T is set inside the belt B through the air tank T at the center of the ring, the handle portion 18 connected to the nut member 16 is turned, so that the buckle bodies 10a and 10b approach each other, and the belt The air tank T is fastened and fixed by B.

Since the coil spring 20 as an elastic member is inserted between the nut member 16 and the bolt insertion portion 14, the coil spring 20 is compressed by turning the nut member 16, and the compressed coil spring is compressed. 20. The air tank T is fastened by the belt B via the buckle bodies 10a, 10b. Even if the belt B stretches somewhat due to water absorption or the like, the elastic force of the coil spring 20 still acts, so that the tightening force of the belt B to the air tank T does not loosen.
Further, after the handle portion 18 is turned by turning the nut member 16 to complete the tightening, the handle portion 18 is rotated about the connection shaft 17 in the direction of the air tank T and stopped at that position by a click mechanism or the like. The handle portion 18 does not get in the way and you can enjoy a comfortable dive. Although not shown, if the handle portion 18 is in a position where it abuts against the belt B when the handle portion 18 is rotated, there is no gap between the handle portion 18 and the belt B, and foreign matter is involved. The fear is further reduced and still preferred.

FIG. 4 is an explanatory front view of a tank mounting buckle according to the second embodiment. FIG. 5 is a cross-sectional view taken along line AA in FIG. In the present embodiment, the same reference numerals are given to portions common to the first embodiment, and the detailed description of the same reference numerals is omitted.
In the pair of buckles 10 according to the present embodiment, the bolt insertion portion 14 in the buckle body 10a has a structure that can be detached from the buckle body 10a while the bolts N are still inserted.

  Specifically, the bolt insertion portion 14 is formed separately from the buckle body 10a, and is provided on the support pieces 11 and 11 provided so as to protrude inward from both end edges of the standing pieces 13 and 13 of the buckle body 10a. It fits so that it may contact from the outside. That is, the bolt insertion part 14 is supported by both the support pieces 11 and 11 by entering the space between the both standing pieces 13 and 13 so as to come into contact with the support pieces 11 and 11 from the outside. become. The reaction force due to tightening is received by both support pieces 11 and 11 through the bolt insertion portion 14.

Moreover, if the convex part 11a is provided in one of the contact surfaces of the bolt insertion part 14 and the both support pieces 11 and 11, and the concave part 14a in which the convex part 11a is inserted in the other, positioning of the bolt insertion part 14 will be carried out. In addition, the bolt insertion portion 14 can be prevented from being loosened outwardly.
In the second embodiment, when the air tank T is mounted, the bolt insertion portion 14 can be removed from the buckle body 10a. Accordingly, after the air tank T is applied to the BC jacket J, the bolt insertion portion 14 is engaged with the buckle body 10a and the nut member 16 is tightened, so that the air tank T can be easily attached.
In this way, by employing the buckle 10 of this embodiment, the air tank T can be attached to the tank fastening mechanism of the BC jacket J quickly and accurately.

FIG. 6 is an explanatory front view of a tank mounting buckle according to the third embodiment. 7 is a cross-sectional view taken along line AA in FIG.
In the pair of buckles 10 of the present embodiment, the schematic structure is the same as that of the pair of buckles 10 described in Embodiment 1, but the structure for attaching the belt B to the buckle bodies 10a and 10b is different.
The parts common to the first and second embodiments are denoted by the same reference numerals, and detailed description thereof is omitted.

In this embodiment, as shown in FIGS. 6 and 7, an opening is formed on the upper end side (opposite direction to the air tank T) of the standing pieces 13, 13 at a position facing the facing surfaces of both standing pieces 13, 13. An engaging groove 19 is formed. As shown in FIG. 7, the engagement groove 19 is formed so as to be inclined in the direction in which the belt B is slackened from the entry side toward the depth direction.
Further, the belt B is attached with an engagement shaft 30 whose both ends protrude outward from the belt B. After the engagement shaft 30 is engaged with the engagement groove 19, the nut member 16 is turned by the handle portion 18 and appropriately tightened to bring the buckle bodies 10a and 10b into contact or approach, and the air tank T is moved to the belt B. Can be tightened.

In this way, the engagement shaft 30 is engaged with the inclined engagement groove 19 and tightened. Therefore, even if the belt B absorbs water and becomes slack during diving, the engagement shaft 30 remains engaged. It is safe because there is no risk of detachment from 19.
Further, as shown in FIG. 7, if a plurality of engagement grooves 19 are formed at predetermined intervals on the standing piece 13, the length of the belt B connected to the belt connecting portion 12 of the buckle body 10a is not adjusted one by one. However, there exists an advantage that it can respond also to the air tank T from which a diameter differs.

  In addition, since the length adjusting function is not necessarily required in the buckle body 10b, the engagement shaft 30 is inserted into the fixing hole 31 provided in the buckle body 10b as shown in FIG. The portion may be fixed to the buckle body 10b using a washer 40 and a retaining screw 42.

The belt B is attached to the engagement shaft 30 by winding the belt B, which is provided with a locking tool such as a button or a hook-and-loop fastener (not shown) at the front end portion and the middle portion, so that the engagement shaft 30 serves as a turning point. Put on. The front end portion of the belt B folded back by the engagement shaft 30 is locked by a locking tool disposed in the middle portion of the belt (not shown) and can be adjusted to a predetermined length.
The belt B may be attached to the other engagement shaft 30 in such a form that the length of the belt B cannot be adjusted. Therefore, after winding the engagement shaft 30 as a turning point, the front end portion of the belt B May be fixed to the belt B by sewing.
The bolt N in the present embodiment is configured such that a cosmetic screw K is screwed onto a female screw formed at the tip end portion Na to form a head portion Na of the bolt N.

FIG. 8 is an explanatory diagram showing an example of the shape of the bolt insertion hole. FIG. 9 is an explanatory view showing an example of a bolt shape suitable for the bolt insertion hole shown in FIG.
In this embodiment, an elongated elliptical bolt insertion hole 15 is formed in the bolt insertion portion 14 as shown in FIG. 8, and between the bolt tip portion Nc and the male screw portion Nb as shown in FIG. A bolt N having an intermediate portion Nm formed in a shape (cross-sectional ellipse) that can be fitted into the bolt insertion hole 15 is used.

By adopting the bolt insertion hole 15 and the bolt N having such a configuration in the first or second embodiment, if the bolt N is inserted into the bolt insertion hole 15 formed in the buckle body 10a, the bolt insertion hole of the buckle body 10a. 15, the intermediate portion Nm of the bolt N is fitted, and even if the bolt N is tightened by the nut member 16, the cap nut Na attached to the tip Ns of the bolt N and the bolt N are fixed together. Therefore, by simply tightening the bolt N with the nut member 16, the buckle body 10b can be fixed close to the buckle body 10a, and the belt B can be fastened to the air tank T quickly. Work can be performed more easily.
Note that the shape of the bolt through hole 15 and the intermediate portion Nm of the bolt is not limited to an elliptical shape, and any shape can be used as long as the bolt through hole 15 and the intermediate portion Nm of the bolt are fitted. Needless to say, it doesn't matter.

Although the tank clamping mechanism according to the present invention has been described above based on the embodiments, the present invention is not limited to these.
For example, in the embodiment, the coil spring 20 is used as the elastic member, but another elastic member such as a leaf spring may be provided. Of course, the elastic member may be disposed between the head Na of the bolt N and the bolt insertion portion 14.
Further, the insertion hole 15 formed in the bolt insertion part 14 does not necessarily have to be a through hole, and opens to the upper edge of the bolt insertion part 14 so that the bolt N can be detached from the bolt insertion part 14. The buckle bodies 10a and 10b can be sufficiently tightened as groove-shaped bolt holes formed in a U-shape, V-shape, horizontal U-shape or the like.

Furthermore, in the present embodiment, the handle portion 18 is formed to be wide, but any shape that can rotate the nut member 16 around the axis of the bolt N may be used. There is no need to be.
Furthermore, the buckle bodies 10a and 10b are not only configured to be attached to both ends of one belt B, but also use two belts B and B, and one end of each belt B and B is connected to a BC jacket J or the like. It is also conceivable to attach the buckle body 10a, 10b to the other end side of the body. Thus, the number of belts B used in the tank tightening mechanism according to the present invention is not limited to one.

It is explanatory drawing which shows the state which attached the air tank to BC jacket. It is an expansion explanatory front view of the A section of FIG. It is sectional drawing in the AA of FIG. It is a description front view of the buckle for tank attachment in Example 2. FIG. It is sectional drawing in the AA line in FIG. It is a description front view of the buckle for tank attachment in Example 3. FIG. It is sectional drawing in the AA line in FIG. It is explanatory drawing which shows an example of the shape of a bolt insertion hole. It is explanatory drawing which shows an example of a bolt shape suitable for the bolt insertion hole shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Buckle 10a, 10b Buckle main body 11 Support piece 12 Belt connection part 12a Belt through hole 12b Folding belt through hole 13 Standing piece 14 Bolt insertion part 15 Insertion hole 16 Nut member 16b Female thread part 17 Connection shaft 18 Handle part 19 Engagement Groove 20 Coil spring 30 Engagement shaft 31 Fixing hole 40 Washer 42 Set screw B Belt N Screw T Air tank

Claims (14)

In the tank tightening mechanism in the tank attachment part of the scuba diving tank harness or the buoyancy adjustment jacket for scuba diving,
A pair of buckles in which a bolt insertion part is formed in a buckle body connected to an end of a belt for fastening the tank;
Insertion holes provided in each bolt insertion portion of the buckle body,
The bolt is inserted through both the insertion holes, the head abuts against the outer end surface of the bolt insertion part formed on one buckle body, and the male screw part is outside the bolt insertion part formed on the other buckle body. A bolt protruding into the
A tank tightening mechanism comprising: a nut member screwed into a male thread portion of the bolt. Between the head of the bolt and the outer end surface of the bolt insertion portion formed on one buckle body, or between the nut member and the outer end surface of the bolt insertion portion formed on the other buckle body. The tank tightening mechanism according to claim 1, further comprising an inserted elastic member. 2. The handle according to claim 1, wherein at least one of the bolt and the nut member is provided with a handle portion formed wide to facilitate rotation when the bolt or the nut member is rotated about an axis. 2. The tank tightening mechanism according to 2. The handle portion is rotatably attached to a head portion or a nut member of the bolt, and rotates in the belt direction to close a gap between the bolt and the belt. 3. The tank tightening mechanism according to 3. The tank tightening mechanism according to any one of claims 2, 3, and 4, wherein the elastic member is a coil spring. The insertion hole formed in the bolt insertion portion of at least one of the buckle bodies is opened at the upper end portion of the bolt insertion portion, and the bolt is provided so as to be detachable from the bolt insertion portion. The tank fastening mechanism according to any one of claims 1 to 5. The bolt insertion portion of at least one of the buckle bodies is detachably provided on the buckle body in a state where the bolts are inserted. The tank tightening mechanism described. 8. The tank tightening mechanism according to claim 7, wherein the bolt insertion portion of the one buckle body is detachable from the buckle body in a direction away from the tank to which the one is attached. The belt connecting portion of at least one buckle body constituting the buckle is as follows:
An engaging portion provided in the buckle body;
The tank tightening mechanism according to any one of claims 1 to 8, comprising a locking member attached to the buckle body and detachably locked to the engagement portion. The engaging portion is
Standing pieces formed at both ends of the buckle body in the direction orthogonal to the tightening direction;
It is composed of an engaging groove provided at an opposed position of the opposed surfaces of the both standing pieces so as to open to an end surface opposite to the tank of the standing pieces,
10. The tank tightening mechanism according to claim 9, wherein both ends of the locking member are provided so as to be able to enter into the engaging grooves of the upright pieces from the opening. The tank tightening mechanism according to claim 10, wherein the engagement groove is provided so as to be inclined in a direction in which the belt is loosened as the locking member enters from the opening to the back. The tank tightening mechanism according to claim 10 or 11, wherein a plurality of pairs of the engaging grooves are provided in the upright piece with a required interval. A tank harness for scuba diving, wherein the tank tightening mechanism according to any one of claims 1 to 12 is attached. A buoyancy adjustment jacket for scuba diving, wherein the tank tightening mechanism according to any one of claims 1 to 12 is attached.

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