JP7044323B2 - Safety belt - Google Patents

Description

The present invention relates to a safety belt worn when working at a high place.

A body belt type or harness type safety belt is known as a wearing tool for preventing a worker who works at a high place from falling (for example, Patent Documents 1 and 2).

Japanese Unexamined Patent Publication No. 2009-11269 Japanese Unexamined Patent Publication No. 2013-81597

The torso belt type safety belt is configured to include a torso belt worn around the worker's torso and a lifeline (rope, strap, etc.) connected between the structure and the torso belt. The torso belt type safety belt has a structure suitable for maintenance and inspection work on the utility pole on which the power line is erected, but if the worker accidentally steps off the scaffolding, the impact at the time of a crash will occur. There was a risk of concentrating on the worker's waist and hurt the waist. On the other hand, the harness type safety belt includes a belt that is continuously attached to the shoulder and thigh of the worker, and a lifeline (rope, strap, etc.) that is connected between the structure and the belt. ing. The harness type safety belt does not have a structure suitable for maintenance and inspection work on the utility pole on which the power line is erected, but even if the worker accidentally steps off the scaffolding, The impact of the crash is distributed to both shoulders and thighs of the worker and does not concentrate on one place of the worker. As described above, since the body belt type and harness type safety belts each have a unique structure, the current situation is that they are used properly according to the content of aerial work.

Therefore, the present invention has a safety structure in which the torso belt type and harness type safety belts can be reliably attached and detached so that the torso belt type and harness type safety belts can be quickly worn according to the work site. The purpose is to provide a belt.

The main invention for solving the above-mentioned problems is a shoulder belt attached to the shoulder of the worker, a thigh belt provided integrally with the shoulder belt and attached to the thigh of the worker, and the shoulder belt. Alternatively, a harness type safety band including a buckle provided integrally with the thigh belt, a torso belt attached to the torso of the worker, and a torso belt provided integrally with the torso belt and detachably attached to the buckle. A body belt type safety band including a connecting metal fitting to be mounted is provided, and some of the metal fittings on the side where the buckle is mounted are such that the buckle responds to the movement of the worker. It is formed so as to move in a direction approaching the worker or in a direction away from the worker.

Other features of the invention will be apparent from the accompanying drawings and the description herein.

According to the present invention, since the connecting metal fitting is formed so that the buckle moves in the direction toward the worker or in the direction away from the worker according to the movement of the worker, the harness type is formed according to the content of the work at a high place. It is possible to quickly switch the mode in which the safety belt and the body belt type safety belt are used as one or as a separate body.

It is a harness type safety belt which constitutes a part of the safety belt which concerns on 1st to 3rd Embodiment, and is a figure which shows from the side which becomes the back part of a worker. It is a figure which shows the body belt type safety belt which constitutes the other part of the safety belt which concerns on 1st Embodiment. It is a perspective view which shows one connecting metal fitting attached to the body belt type safety belt which constitutes the other part of the safety belt which concerns on 1st Embodiment. It is a perspective view which shows the other connecting metal fitting attached to the body belt type safety belt which constitutes the other part of the safety belt which concerns on 1st Embodiment. In the safety belt according to the first embodiment, it is a top view when one connecting metal fitting is viewed from the + Y side to the −Y side in FIG. 3A. In the safety belt according to the first embodiment, it is a top view when the other connecting metal fitting is viewed from the side of −Y in FIG. 3B to the side of + Y. In the safety belt according to the first embodiment, it is a top view when one connecting metal fitting is viewed from the + X side to the −X side in FIG. 3A. In the safety belt according to the first embodiment, it is a top view when the other connecting metal fitting is viewed from the + X side to the −X side in FIG. 3B. It is a partially enlarged view which shows the appearance that one connecting metal fitting is adjacent to an annular metal fitting in the safety belt which concerns on 1st Embodiment. It is another partial perspective view which shows the appearance that the other connecting metal fitting is adjacent to the annular metal fitting in the safety belt which concerns on 1st Embodiment. It is a figure which shows the state before connecting the connecting metal fitting to a buckle in the safety belt which concerns on 1st Embodiment from the side which becomes the back part of an operator. It is a figure which shows the state after connecting the connecting metal fitting to a buckle in the safety belt which concerns on 1st Embodiment from the side which becomes the back part of a worker. It is a figure which shows the state before connecting the connecting metal fitting to a buckle in the state which wore the safety belt which concerns on 1st Embodiment from the side of the back part of the worker. It is a figure which shows the state after connecting the connecting metal fitting to a buckle in the state of wearing the safety belt which concerns on 1st Embodiment from the side of the back part of a worker. It is a figure which shows a mode that a worker wears a safety belt which concerns on 1st to 3rd Embodiment, and performs work at a high place on a utility pole. It is a partially enlarged view which shows the application example of the connecting metal fitting in the safety belt which concerns on 1st Embodiment. It is a perspective view which shows one connecting metal fitting attached to the body belt type safety belt which constitutes the other part of the safety belt which concerns on 2nd Embodiment. It is a perspective view which shows the other connecting metal fitting attached to the body belt type safety belt which constitutes the other part of the safety belt which concerns on 2nd Embodiment. In the safety belt according to the second embodiment, it is a top view when one connecting metal fitting is viewed from the + Y side to the −Y side in FIG. 12A. In the safety belt according to the second embodiment, it is a top view when the other connecting metal fitting is viewed from the side of −Y in FIG. 12B to the side of + Y. In the safety belt according to the second embodiment, it is a top view when one connecting metal fitting is viewed from the + X side to the −X side in FIG. 12A. FIG. 5 is a plan view of the safety belt according to the second embodiment when the other connecting metal fitting is viewed from the + X side to the −X side in FIG. 12B. It is an exploded perspective view which shows the connecting metal fitting attached to the body belt type safety belt which constitutes the other part of the safety belt which concerns on 3rd Embodiment. It is a perspective view which shows the connecting metal fitting attached to the body belt type safety belt which constitutes the other part of the safety belt which concerns on 3rd Embodiment. FIG. 5 is an exploded plan view of the connecting metal fitting in the safety belt according to the third embodiment when the + Y side is viewed from the −Y side in FIG. In the safety belt according to the third embodiment, it is a top view when the connecting metal fitting is viewed from the side of −Y in FIG. 16 from the side of + Y. In the safety belt according to the third embodiment, it is a top view when the connecting metal fitting is viewed from the + X side to the −X side in FIG.

The description of this specification and the accompanying drawings will clarify at least the following matters.

=== 1st Embodiment ===
FIG. 1 is a harness-type safety belt that constitutes a part of the safety belt according to the present embodiment, and is a view shown from the back side of the worker. FIG. 2 is a diagram showing a body belt type safety belt that constitutes another part of the safety belt according to the present embodiment. FIG. 3A is a perspective view showing one connecting metal fitting attached to the body belt type safety belt constituting the other part of the safety belt according to the present embodiment. FIG. 3B is a perspective view showing the other connecting metal fitting attached to the body belt type safety belt constituting the other part of the safety belt according to the present embodiment. FIG. 4A is a plan view of the safety belt according to the present embodiment when one connecting metal fitting is viewed from the + Y side to the −Y side in FIG. 3A. FIG. 4B is a plan view of the safety belt according to the present embodiment when the other connecting metal fitting is viewed from the −Y side to the + Y side in FIG. 3B. FIG. 5A is a plan view of the safety belt according to the present embodiment when one of the connecting fittings is viewed from the + X side to the −X side in FIG. 3A. FIG. 5B is a plan view of the safety belt according to the present embodiment when the other connecting metal fitting is viewed from the + X side to the −X side in FIG. 3B. The X-axis is an axis along the longitudinal direction of the insertion hole described later, the Y-axis is an axis along the direction of inserting the body belt described later into the insertion hole, and the Z-axis is an axis orthogonal to the X-axis and the Y-axis. Is. FIG. 6 is a partially enlarged view showing a state in which the other connecting metal fitting is adjacent to the annular metal fitting in the safety belt according to the present embodiment. FIG. 7 is another partial perspective view showing how the other connecting metal fitting is adjacent to the annular metal fitting in the safety belt according to the present embodiment. FIG. 8A is a diagram showing a state before connecting the connecting metal fitting to the buckle in the safety belt according to the present embodiment from the side that becomes the back of the operator. FIG. 8B is a diagram showing the state of the safety belt according to the present embodiment after the connecting metal fitting is connected to the buckle from the side that becomes the back of the operator. FIG. 9A is a partially enlarged view showing a state before connecting the connecting metal fitting to the buckle from the back side of the worker while wearing the safety belt according to the present embodiment. FIG. 9B is a partially enlarged view showing a state after connecting the connecting metal fitting to the buckle from the back side of the worker while wearing the safety belt according to the present embodiment. FIG. 10 is a diagram showing a state in which an operator wears a safety belt according to the present embodiment and performs aerial work on a utility pole. FIG. 11 is a partially enlarged view showing an application example of the connecting metal fitting in the safety belt according to the present embodiment.

Hereinafter, the safety belt according to the present embodiment will be described with reference to FIGS. 1 to 11.

<< Safety belt >>
The safety belt 1 is a wearing tool worn by an operator so as not to fall when working at a high place, and is a harness type safety belt 2 and a body belt type safety belt that can be attached to and detached from the harness type safety belt 2. 3 and are included in the configuration. A buckle is used as a means for attaching and detaching the harness type safety belt 2 and the body belt type safety belt 3, but as the buckle, for example, a side release type buckle into which a spear-shaped fitting piece is fitted is used. .. The buckle is formed by using, for example, polyacetal as a material.

<< Harness type safety belt >>
The harness type safety belt 2 includes a pair of shoulder belts 201A, 201B, a chest belt 202, a pair of thigh belts 203A, 203B, a pair of relay belts 204A, 204B, 205A, 205B, 218A, 218B, and a buckle support 206. , A lanyard (lifeline) 207, and a pair of buckles 217A and 217B. The belts 201A, 201B, 202, 203A, 203B, 204A, 204B, 205A, 205B and the tail rest 206 are formed by using, for example, nylon as a material. Further, the lanyard 207 is formed by using, for example, aramid fiber as the material of the core and, for example, polyester fiber as the material of the epidermis. Further, the lanyard 207 includes a hook 208 for hooking the harness type safety belt 2 on a structure (not shown), and the hook 208 is formed by using, for example, chrome molybdenum or an aluminum light alloy as a material.

The shoulder belts 201A and 201B corresponding to the right shoulder and the left shoulder of the worker each have a long shape and intersect at a position facing the back of the worker when the worker wears the harness type safety belt 2. It is combined so as to exhibit a shape (shape of a crosspiece). The shoulder belt 201A is sewn so that the entire shoulder belt 201A has a ring shape at a position facing the worker's right waist so that the shoulder belt 201A is attached to the right shoulder portion through the worker's right arm. The shoulder belt 201A has a belt stopper 209A for adjusting the length of the shoulder belt 201A at a position facing the right chest of the worker. Similarly, the shoulder belt 201B is sewn so that the entire shoulder belt 201B has a ring shape at a position facing the left waist of the worker so that the shoulder belt 201B is attached to the left shoulder through the left arm of the worker. The shoulder belt 201B has a belt stopper 209B for adjusting the length of the shoulder belt 201B at a position facing the right chest of the worker.

The relay belts 204A and 205A are two belts extending ahead from the suture position 210A of the shoulder belt 201A, and relay between the shoulder belt 201A and the thigh belt 203A. That is, the ends of the relay belts 204A and 205A on the opposite side of the shoulder belt 201A are sewn to the thigh belt 203A having a ring shape. Similarly, the relay belts 204B and 205B are two belts extending ahead from the suture position 210B of the shoulder belt 201B, and relay between the shoulder belt 201B and the thigh belt 203B. That is, the ends of the relay belts 204B and 205B on the opposite side of the shoulder belt 201B are sewn to the thigh belt 203B having a ring shape. The shoulder belts 201A and 201B are formed so as to be symmetrical with respect to the intersection position 211 facing the back of the worker.

The chest belt 202 has a long shape and is sewn to a position facing the worker's right chest, for example, in the shoulder belt 201A. A spear-shaped fitting piece 212 is attached to the tip of the chest belt 202. The buckle 213 is detachably attached to the fitting piece 212, and is attached to the shoulder belt 201B at a position facing the left chest of the operator and at a position where the fitting piece 212 is fitted. When the fitting piece 212 is fitted into the buckle 213, the shoulder belts 201A and 201B are connected via the chest belt 202, and the shoulder belts 201A and 201B do not come off from the worker's right shoulder and left shoulder.

The thigh belt 203A corresponding to the worker's right thigh has a long shape and is coupled in a ring shape so as to be attached to the right thigh through the worker's right leg. The thigh belt 203A has a belt stopper 214A for adjusting the length of the thigh belt 203A at a position facing the right thigh of the operator. The thigh belt 203A is sewn to the ends of the relay belts 204A and 205A so that the belt stopper 214A faces the right thigh of the worker. Similarly, the thigh belt 203B corresponding to the worker's left thigh has a long shape and is coupled in a ring shape so as to be attached to the left thigh through the worker's left leg. The thigh belt 203B has a belt stopper 214B for adjusting the length of the thigh belt 203B at a position facing the left thigh of the operator. The thigh belt 203B is sewn to the ends of the relay belts 204B and 205B so that the belt stopper 214B faces the left thigh of the worker. The thigh belts 203A and 203B are formed so as to be symmetrical with respect to the intersection position 211 of the shoulder belts 201A and 201B facing the back of the worker.

The buttock 206 has a long shape, and both ends of the buttock 206 are sewn to positions facing the worker's buttocks on the relay belts 205A and 205B.

An annular metal fitting 216 having a D shape, for example, is attached to the intersection position 211 of the shoulder belts 201A and 201B via a relay belt 215, and the annular metal fitting 216 is attached to the lanyard 207 on the side opposite to the side to which the hook 208 is attached. The end is attached.

The buckle 217A is attached to the relay belt 218A, and the end portion of the relay belt 218A opposite to the buckle 217A is sewn so as to overlap the suture position 210A which is the position of the worker's right waist. The buckle 217B is attached to the relay belt 218B, and the end portion of the relay belt 218B opposite to the buckle 217B is sewn so as to overlap the suture position 210B which is the position of the left waist of the worker.

The harness type safety belt 2 having the configuration as described above can be worn alone by fitting the fitting piece 212 into the buckle 213 and adjusting the lengths of the shoulder belts 201A and 201B and the thigh belts 203A and 203B. It is also possible to do.

<< Body belt type safety belt >>
The body belt type safety belt 3 includes a body belt 301, an auxiliary belt 302, a V-shaped square ring 303B, D rings 303A, 303C, and connecting metal fittings 304A, 304B. The body belt 301 and the auxiliary belt 302 are formed by using, for example, nylon as a material.

The torso belt 301 has a long shape so as to be attached to the torso of the worker. A connecting metal fitting 304A is detachably attached to the body belt 301 at a position that becomes the right waist of the worker when the worker wears the body belt 301, and when the worker wears the body belt 301, the worker wears the connecting metal fitting 304A. The connecting metal fitting 304B is detachably attached to the position of the left waist.

The auxiliary belt 302 has a long shape so as to be mounted on the body of the worker so as to overlap with the body belt 301. The width of the auxiliary belt 302 is wider than the width of the body belt 301, and the length of the auxiliary belt 302 is shorter than the length of the body belt 301. The auxiliary belt 302 has belt retainers 305A, 305B, and 305C for pressing the body belt 301 at three positions, which are the right waist, the left waist, and the back waist of the worker when the worker wears the auxiliary belt 302. Have. Further, the auxiliary belt 302 has a D ring 303A at a position (a position adjacent to the belt retainer 305A) that becomes the right waist of the worker when the worker wears the auxiliary belt 302, and the worker attaches the auxiliary belt 302. The V-shaped square ring 303B is held at the position that becomes the left waist of the worker when worn (position adjacent to the belt retainer 305B), and the right waist and back waist of the worker when the worker wears the auxiliary belt 302. It has a D ring 303C at a position between and. The V-shaped square rings 303B, D rings 303A, and 303C are sewn on the auxiliary belt 302 so as to rotate about a direction orthogonal to the longitudinal direction of the auxiliary belt 302.

The body belt 301 is attached so as to overlap the auxiliary belt 302 by passing it through the V-shaped square rings 303B, D rings 303A, 303C and the belt retainers 305A, 305B, 305C of the auxiliary belt 302. At this time, the connecting bracket 304A is mounted between the D rings 303A and 303C on the opposite side of the belt retainer 305A of the D ring 303A, and the connecting bracket 304B is opposite to the belt retainer 305B of the V-shaped square ring 303B. Attached to the side.

<< Connecting bracket >>
The connecting metal fitting 304A includes a first metal fitting 306A, a second metal fitting 307A, and a hinge structure 308A.

The first metal fitting 306A is a metal fitting that is attached to the body belt 301 and is connected to the second metal fitting 307A via the hinge structure 308A. The first metal fitting 306A includes a flat plate 322A, first bent pieces 309A and 310A, second bent pieces 311A and 312A, and insertion holes 313A and 314A.

In the first bent pieces 309A and 310A, the direction in which the body belt 301 is inserted into the insertion holes 313A and 314A in order to secure a gap for sandwiching the body belt 301 between the first metal fitting 306A and the auxiliary belt 302. Is a piece formed extending from both ends of the flat plate 322A along a direction orthogonal to the direction (direction orthogonal to the longitudinal direction of the body belt 301) toward the auxiliary belt 302. The angle at which the first bent pieces 309A and 310A bend with respect to the surface of the flat plate 322A is an angle of less than 90 degrees (for example, 45 degrees). Further, in the first bent pieces 309A and 310A, the flat plate 322A is used as the auxiliary belt 302 so as not to form an extra gap other than sandwiching the body belt 301 and necessary parts between the first metal fitting 306A and the auxiliary belt 302. On the other hand, it is formed so as to be substantially parallel to each other.

The second bent piece 311A is formed on the auxiliary belt 302 when the body belt 301 is inserted through the D rings 303A and 303C in order to secure a certain distance between the D ring 303A and the connecting metal fitting 304A. It is a piece formed so as to abut on the sewn portion 315A of the D ring 303A so as to extend substantially parallel to the flat plate 322A from the end opposite to the flat plate 322A of the first bent piece 309A. .. Then, by adopting the second bent piece 311A, the D ring 303A can be smoothly rotated in the direction of the connecting metal fitting 304A. Similarly, the second bent piece 312A is formed on the auxiliary belt 302 when the body belt 301 is inserted through the D rings 303A and 303C in order to secure a certain distance between the D ring 303C and the connecting metal fitting 304A. It is formed so as to extend from the end of the first bent piece 310A opposite to the flat plate 322A so as to be substantially parallel to the flat plate 322A so as to abut on the sewn portion 316A of the D ring 303C. It is a piece. Then, by adopting the second bent piece 312A, the D ring 303C can be smoothly rotated in the direction of the connecting metal fitting 304A.

The insertion hole 313A is a long hole formed at the end of the first bent piece 309A on the side close to the second bent piece 311A for inserting the body belt 301. Similarly, the insertion hole 314A is an elongated hole formed at the end of the first bending piece 310A on the side closer to the second folding piece 312A for inserting the body belt 301. Here, since the first bent pieces 309A and 310A are bent so as to move away from the flat plate 322A as they approach the auxiliary belt 302, the insertion holes 313A and 314A are located closest to the auxiliary belt 302 and both ends of the flat plate 322A. It can be seen that it is formed at a position farther than the distance of. Further, it can be seen that the second bent pieces 311A and 312A come into contact with the auxiliary belt 302 at a position distant from the insertion holes 313A and 314A from the flat plate 322A. Therefore, since the deformation of the auxiliary belt 302 is suppressed by the stable contact of the second bent pieces 311A and 312A with the auxiliary belt 302, the body belt 301 is smoothly inserted into the insertion holes 313A and 314A and the buckle 217A. Can be smoothly attached to the connecting metal fitting 304A.

The second metal fitting 307A is a metal fitting to which the buckle 217A is detachably attached. Further, the second metal fitting 307A is a metal fitting that is connected to the first metal fitting 306A via the hinge structure 308A and is rotatable around the hinge structure 308A. In other words, when the first metal fitting 306A is attached to the body belt 301, the second metal fitting 307A moves around the hinge structure 308A facing in the longitudinal direction of the body belt 301. It is a metal fitting that rotates in a direction toward the operator or a direction away from the operator. The second metal fitting 307A is configured to include the fitting piece 317A.

The fitting piece 317A is one protruding piece having a spear shape that is fitted into the buckle 217A of the harness type safety belt 2. The fitting piece 317A is formed so as to project diagonally from the second metal fitting 307A so as to face the buckle 217A. The above-mentioned diagonal direction is a direction inclined toward the belt retainer 305C with respect to a direction orthogonal to the longitudinal direction of the body belt 301. The connecting metal fitting 304A is slidable along the longitudinal direction of the body belt 301 in the region sandwiched by the D rings 303A and 303C, and the operator wears both the harness type safety belt 2 and the body belt type safety belt 3. Depending on the work situation, the connecting metal fitting 304A may approach the D ring 303C. In this case, since the fitting piece 317A is tilted toward the D ring 303C, there is a possibility that the buckle 217A may interfere with the D ring 303C when it is connected to the connecting metal fitting 304A. Therefore, as shown in FIG. 6, the fitting piece 317A reaches a position separated from the D ring 303C by a predetermined distance X in a direction orthogonal to the longitudinal direction of the body belt 301 so that the buckle 217A does not interfere with the D ring 303C. It is formed extending from the second metal fitting 307A.

The hinge structure 308A is a metal fitting that connects between the first metal fitting 306A and the second metal fitting 307A. The hinge structure 308A includes a plurality of tubular bodies 318A, a plurality of tubular bodies 319A, and a pin 320A. The plurality of cylinders 318A are integrally formed at the ends of the first metal fitting 306A on the second metal fitting 307A side at equal intervals. The plurality of tubular bodies 319A are integrally formed at the end of the second metal fitting 307A on the first metal fitting 306A side. When connecting the first metal fitting 306A and the second metal fitting 307A, the plurality of cylinders 318A and 319A are alternately arranged so that the insertion holes of the plurality of cylinders 318A and 319A communicate with each other coaxially. The pin 320A is a member that is inserted into the insertion holes of the plurality of tubular bodies 318A and 319A and connects the first metal fitting 306A and the second metal fitting 307A.

In the present embodiment, by punching and bending one metal plate, the first metal fitting 306A is integrally formed with a plurality of cylinders 318A, and the second metal fitting 307A is a plurality of cylinders. It shall be integrally formed with the body 319A.

The connecting metal fitting 304B includes a first metal fitting 306B, a second metal fitting 307B, and a hinge structure 308B.

The first metal fitting 306B is a metal fitting that is attached to the body belt 301 and is connected to the second metal fitting 307B via the hinge structure 308B. The first metal fitting 306B includes a flat plate 322B, first bent pieces 309B, 310B, second bent pieces 311B, 312B, and insertion holes 313B, 314B.

In the first bent pieces 309B and 310B, the direction in which the body belt 301 is inserted into the insertion holes 313B and 314B in order to secure a gap for sandwiching the body belt 301 between the first metal fitting 306B and the auxiliary belt 302. Is a piece formed extending from both ends of the flat plate 322B along a direction orthogonal to the direction (direction orthogonal to the longitudinal direction of the body belt 301) toward the auxiliary belt 302. The angle at which the first bent pieces 309B and 310B bend with respect to the surface of the flat plate 322B is an angle of less than 90 degrees (for example, 45 degrees). Further, in the first bent pieces 309B and 310B, the flat plate 322B is used as the auxiliary belt 302 so as not to form an extra gap other than sandwiching the body belt 301 and necessary parts between the first metal fitting 306B and the auxiliary belt 302. On the other hand, it is formed so as to be substantially parallel to each other.

The second bent piece 311B is used to secure a certain distance between the annular metal fitting and the connecting metal fitting 304B when the annular metal fittings such as the D ring and the V-shaped square ring are adjacent to each other (not shown in this embodiment). The flat plate from the end opposite to the flat plate 322B of the first bent piece 309B so as to come into contact with the sewn portion of the annular metal fitting formed on the auxiliary belt 302 when the body belt 301 is inserted into the annular metal fitting. It is a piece formed so as to extend substantially parallel to 322B. Then, by adopting the second bent piece 311B, the annular metal fitting can be smoothly rotated in the direction of the connecting metal fitting 304B. Similarly, the second bent piece 312B has an auxiliary belt 302 when the body belt 301 is inserted through the V-shaped square ring 303B in order to secure a certain distance between the V-shaped square ring 303B and the connecting metal fitting 304B. The first bent piece 310B extends from the end opposite to the flat plate 322B so as to be substantially parallel to the flat plate 322B so as to abut on the sewn portion 316B of the V-shaped square ring 303B formed in. It is a piece formed by. Then, by adopting the second bent piece 312B, the V-shaped square ring 303B can be smoothly rotated in the direction of the connecting metal fitting 304B.

The insertion hole 313B is a long hole formed at the end of the first bent piece 309B on the side close to the second bent piece 311B for inserting the body belt 301. Similarly, the insertion hole 314B is an elongated hole formed at the end of the first bent piece 310B on the side closer to the second bent piece 312B for inserting the body belt 301. Here, since the first bent pieces 309B and 310B are bent so as to move away from the flat plate 322B as they approach the auxiliary belt 302, the insertion holes 313B and 314B are located closest to the auxiliary belt 302 and both ends of the flat plate 322B. It can be seen that it is formed at a position farther than the distance of. Further, it can be seen that the second bent pieces 311B and 312B come into contact with the auxiliary belt 302 at a position distant from the insertion holes 313B and 314B from the flat plate 322B. Therefore, since the deformation of the auxiliary belt 302 is suppressed by the stable contact of the second bent pieces 311B and 312B with the auxiliary belt 302, the body belt 301 is smoothly inserted into the insertion holes 313B and 314B and the buckle 217B. Can be smoothly attached to the connecting metal fitting 304B.

The second metal fitting 307B is a metal fitting to which the buckle 217B is detachably attached. Further, the second metal fitting 307B is a metal fitting that is connected to the first metal fitting 306B via the hinge structure 308B and is rotatable around the hinge structure 308B. In other words, when the first metal fitting 306B is attached to the body belt 301, the second metal fitting 307B moves around the hinge structure 308B facing in the longitudinal direction of the body belt 301. It is a metal fitting that rotates in a direction toward the operator or a direction away from the operator. The second metal fitting 307B is configured to include the fitting piece 317B.

The fitting piece 317B is one protruding piece having a spear shape that is fitted into the buckle 217B of the harness type safety belt 2. The fitting piece 317B is formed so as to project diagonally from the second metal fitting 307B so as to face the buckle 217B. The above-mentioned diagonal direction is a direction inclined toward the belt retainer 305C with respect to a direction orthogonal to the longitudinal direction of the body belt 301.

When an annular metal fitting (not shown) such as a D ring or a V-shaped square ring is provided at a position between the left waist portion and the rear waist portion of the operator when the operator wears the auxiliary belt 302, the fitting piece 317B Is formed so as to extend from the second metal fitting 307B to a position separated from the annular metal fitting by a predetermined distance X in a direction orthogonal to the longitudinal direction of the body belt 301 so that the buckle 217B does not interfere with the annular metal fitting. Become.

The hinge structure 308B is a metal fitting that connects between the first metal fitting 306B and the second metal fitting 307B. The hinge structure 308B includes a plurality of tubular bodies 318B, a plurality of tubular bodies 319B, and a pin 320B. The plurality of cylinders 318B are integrally formed at the ends of the first metal fitting 306B on the second metal fitting 307B side at equal intervals. The plurality of tubular bodies 319B are integrally formed at the end of the second metal fitting 307B on the first metal fitting 306B side. When connecting the first metal fitting 306B and the second metal fitting 307B, the plurality of cylinders 318B and 319B are alternately arranged so that the insertion holes of the plurality of cylinders 318B and 319B are coaxially communicated with each other. The pin 320B is a member that is inserted into the insertion holes of the plurality of tubular bodies 318B and 319B and connects the first metal fitting 306B and the second metal fitting 307B.

In the present embodiment, by punching and bending one metal plate, the first metal fitting 306B is integrally formed with a plurality of cylinders 318B, and the second metal fitting 307B is a plurality of cylinders. It is assumed that it is integrally formed with the body 319B.

In the body belt type safety belt 3 having the configuration as described above, the fitting pieces 317A and 317B are fitted into the buckles 217A and 217B, respectively, and the lengths of the shoulder belts 201A and 201B and the thigh belts 203A and 203B are adjusted. By doing so, it becomes possible to wear it integrally with the harness type safety belt 2. For example, when the safety belt 1 is worn when performing aerial work such as maintenance and inspection work on a utility pole on which a power line is erected, the lanyard 207 is used for the D ring 303A and the V type square ring 303B of the body belt type safety belt 3. Or a lanyard (not shown) different from the lanyard 207 may be attached to realize the U-shaped suspension function. Further, the body belt type safety belt 3 can be worn alone by not fitting the fitting pieces 317A and 317B into the buckles 217A and 217B, respectively. For example, when the body belt type safety belt 3 is worn when performing maintenance and inspection work at a high place on a utility pole on which a power line is erected, the D ring 303A and the V type square ring 303B of the body belt type safety belt 3 are used. The lanyard 207 may be attached to realize the function of U-shaped suspension.

<< Example of wearing safety belt >>
First, the operator attaches the thigh belt 203A to the right leg by passing the right leg through the thigh belt 203A, attaches the thigh belt 203B to the left leg through the left leg through the thigh belt 203B, and passes the right arm through the shoulder belt 201A to attach the shoulder belt. The 201A is attached to the right shoulder portion, the left arm is passed through the shoulder belt 201B, and the shoulder belt 201B is attached to the left shoulder portion.

Next, the operator inserts the fitting piece 212 into the buckle 213 and connects the shoulder belts 201A and 201B via the chest belt 202.

Next, the operator adjusts the lengths of the shoulder belts 201A and 201B and the thigh belts 203A and 203B so as to be the optimum lengths. It is also possible to use the harness type safety belt 2 alone by carrying out only the above wearing procedure.

Next, the operator picks up the body belt type safety belt 3 and inserts the fitting pieces 317A and 317B into the buckles 217A and 217B, respectively, and connects the harness type safety belt 2 and the body belt type safety belt 3. The second metal fittings 307A and 307B on which the fitting pieces 317A and 317B are formed are in a direction toward the worker or away from the worker according to the movement of the worker (direction of the white arrow shown in FIG. 9B). Since it moves freely, the harness type safety belt 2 and the body belt type safety belt 3 can be quickly connected.

Next, the worker wears the torso belt type safety belt 3 around the torso of the worker.

Finally, the operator attaches the lanyard 207 to the annular metal fitting 216 of the harness type safety belt 2 or to the D ring 303A and the V type square ring 303B of the body belt type safety belt 3, depending on the work content.

In this way, the worker can work at a high place.

<< Modification example of connecting bracket >>
In the present embodiment, when the worker wears the body belt type safety belt 3, the fitting piece 317A (317B) is fitted into the buckle 217A (217B) attached above the body belt type safety belt 3. Therefore, it is formed so as to face upward toward the buckle 217A (217B). However, the present invention is not limited to this, for example, the buckle 217A (217B) is sewn to the relay belt 204A (204B) below the body belt type safety belt 3, and the fitting piece 317A (317B) is the buckle 217A (217B). ) May be formed so that the connecting metal fitting 304A (304B) faces downward. In this case, the buckle 217A (217B) and the connecting metal fitting 304A (304B) do not interfere with the upper body of the worker, so that workability can be improved. Further, since the fitting hole of the buckle 217A (217B) can be visually observed, the fitting piece 317A (317B) can be reliably fitted into the buckle 217A (217B) in combination with the wide movable range of the second metal fitting 307A (307B). Will be. Further, since the buckle 217A (217B) hangs by its own weight so as to be separated from the connecting metal fitting 304A (304B) unless the fitting piece 317A (317B) is fitted, the connecting metal fitting 304A (304B) can be easily removed from the buckle 217A (217B). It becomes possible.

In the present embodiment, the first metal fitting 306A (306B) is formed by subjecting one metal plate to bending or punching. For example, the first metal fitting 306A (306B) may be formed from a metal plate having a thickness sufficient to generate elasticity. In this case, the interference between the body belt 301 and the first metal fitting 306A (306B) can be reduced by the elastic force.

<< Application example of connecting bracket >>
A tool bag 321 for accommodating tools to be picked up by an operator when performing work is suspended from the body belt 301. However, when the tool bag 321 is suspended between the D rings 303A and 303C, when the operator tries to hook the hook 208 of the lanyard 207 on the D rings 303A and 303C, the hook 208 is mistakenly used as the tool bag. If it gets caught in 321, there is a risk that the tool bag 321 will be dropped from the body belt 301. Therefore, the connecting metal fitting 304A (304B) may be attached to the body belt 301 so as to cover the attachment portion of the tool bag 321 to the body belt 301. This makes it possible to reliably prevent the tool bag 321 from falling.

=== Second embodiment ===
FIG. 12A is a perspective view showing one connecting metal fitting attached to the body belt type safety belt constituting the other part of the safety belt according to the present embodiment.

FIG. 12B is a perspective view showing the other connecting metal fitting attached to the body belt type safety belt constituting the other part of the safety belt according to the present embodiment.

FIG. 13A is a plan view of the safety belt according to the present embodiment when one of the connecting fittings is viewed from the + Y side to the −Y side in FIG. 12A.

FIG. 13B is a plan view of the safety belt according to the present embodiment when the other connecting metal fitting is viewed from the −Y side to the + Y side in FIG. 12B.

FIG. 14A is a plan view of the safety belt according to the present embodiment when one of the connecting fittings is viewed from the + X side to the −X side in FIG. 12A.

FIG. 14B is a plan view of the safety belt according to the present embodiment when the other connecting metal fitting is viewed from the + X side to the −X side in FIG. 12B.

Hereinafter, the safety belt according to the present embodiment will be described with reference to FIGS. 12A to 14B. The connecting metal fittings shown in FIGS. 12A to 14B are metal fittings to be attached to the body belt type safety belt 3 instead of the connecting metal fittings shown in FIGS. 3A to 5B.

<< Connecting bracket >>
The connecting metal fitting 401A includes a first metal fitting 402A, a second metal fitting 403A, and a belt structure 404A.

The first metal fitting 402A is a metal fitting that is attached to the body belt 301 and is connected to the second metal fitting 403A via the belt structure 404A. The first metal fitting 402A includes a flat plate 405A, first bent pieces 406A, 407A, second bent pieces 408A, 409A, and insertion holes 410A, 411A, 412A.

In the first bent pieces 406A and 407A, the direction in which the body belt 301 is inserted into the insertion holes 410A and 411A in order to secure a gap for sandwiching the body belt 301 between the first metal fitting 402A and the auxiliary belt 302. Is a piece formed extending from both ends of the flat plate 405A along a direction orthogonal to the direction (direction orthogonal to the longitudinal direction of the body belt 301) toward the auxiliary belt 302. The angle at which the first bent pieces 406A and 407A bend with respect to the surface of the flat plate 405A is an angle of less than 90 degrees (for example, 45 degrees). Further, in the first bent pieces 406A and 407A, the flat plate 405A is used as the auxiliary belt 302 so as not to form an extra gap other than sandwiching the body belt 301 and necessary parts between the first metal fitting 402A and the auxiliary belt 302. On the other hand, it is formed so as to be substantially parallel to each other.

The second bent piece 408A is formed on the auxiliary belt 302 when the body belt 301 is inserted through the D rings 303A and 303C in order to secure a certain distance between the D ring 303A and the connecting metal fitting 401A. It is a piece formed so as to abut on the sewn portion 315A of the D ring 303A so as to extend substantially parallel to the flat plate 405A from the end opposite to the flat plate 405A of the first bent piece 406A. .. Then, by adopting the second bent piece 408A, the D ring 303A can be smoothly rotated in the direction of the connecting metal fitting 401A. Similarly, the second bent piece 409A is formed on the auxiliary belt 302 when the body belt 301 is inserted through the D rings 303A and 303C in order to secure a certain distance between the D ring 303C and the connecting metal fitting 401A. It is formed so as to extend from the end of the first bent piece 407A opposite to the flat plate 405A so as to be substantially parallel to the flat plate 405A so as to abut on the sewn portion 316A of the D ring 303C. It is a piece. Then, by adopting the second bent piece 409A, the D ring 303C can be smoothly rotated in the direction of the connecting metal fitting 401A.

The insertion hole 410A is an elongated hole formed at the end of the first bent piece 406A on the side close to the second bent piece 408A in order to insert the body belt 301. Similarly, the insertion hole 411A is an elongated hole formed at the end of the first folding piece 407A on the side closer to the second folding piece 409A for inserting the body belt 301. Here, since the first bent pieces 406A and 407A are bent so as to move away from the flat plate 405A as they approach the auxiliary belt 302, the insertion holes 410A and 411A are located closest to the auxiliary belt 302 and both ends of the flat plate 405A. It can be seen that it is formed at a position farther than the distance of. Further, it can be seen that the second bent pieces 408A and 409A come into contact with the auxiliary belt 302 at a position distant from the insertion holes 410A and 411A from the flat plate 405A. Therefore, since the second bent pieces 408A and 409A stably contact the auxiliary belt 302 to suppress the deformation of the auxiliary belt 302, the body belt 301 can be smoothly inserted into the insertion holes 410A and 410A and the buckle 217A. Can be smoothly attached to the connecting metal fitting 401A.

The insertion hole 412A is an elongated hole formed at the end of the flat plate 405A on the side close to the second metal fitting 403A so that the first metal fitting 402A and the second metal fitting 403A are connected via the belt structure 404A. The insertion hole 412A has substantially the same length as the belt structure 404A in the longitudinal direction. As a result, when the belt structure 404A is inserted into the insertion hole 412A, the belt structure 404A does not shift in the longitudinal direction of the insertion hole 412A.

The second metal fitting 403A is a metal fitting to which the buckle 217A is detachably attached. Further, the second metal fitting 403A is a metal fitting that is connected to the first metal fitting 402A via the belt structure 404A and can move freely according to the movement of the operator. In other words, when the first metal fitting 402A is attached to the body belt 301, the second metal fitting 403A is directed toward the worker, away from the worker, and with respect to the first metal fitting 402A according to the movement of the worker. It is a metal fitting that can move in a twisting direction. The second metal fitting 403A includes a fitting piece 413A and an insertion hole 414A.

The fitting piece 413A is one protruding piece having a spear shape that is fitted into the buckle 217A of the harness type safety belt 2. The fitting piece 413A is formed so as to project diagonally from the second metal fitting 403A so as to face the buckle 217A. The above-mentioned diagonal direction is a direction inclined toward the belt retainer 305C with respect to a direction orthogonal to the longitudinal direction of the body belt 301. The connecting metal fitting 401A is slidable along the longitudinal direction of the body belt 301 in the region sandwiched by the D rings 303A and 303C, and the operator wears both the harness type safety belt 2 and the body belt type safety belt 3. Depending on the work situation, the connecting metal fitting 401A may approach the D ring 303C. In this case, since the fitting piece 413A is tilted toward the D ring 303C, there is a possibility that the buckle 217A may interfere with the D ring 303C when it is connected to the connecting metal fitting 401A. Therefore, the fitting piece 413A extends from the second metal fitting 403A to a position separated from the D ring 303C by a predetermined distance X in the direction orthogonal to the longitudinal direction of the body belt 301 so that the buckle 217A does not interfere with the D ring 303C. Is formed.

The insertion hole 414A is the end of the second metal fitting 403A on the side closer to the first metal fitting 402A (in other words, the second metal fitting 403A) so that the first metal fitting 402A and the second metal fitting 403A are connected via the belt structure 404A. It is an elongated hole formed at the end opposite to the fitting piece 413A of. The insertion hole 414A has substantially the same length as the belt structure 404A in the longitudinal direction. As a result, when the belt structure 404A is inserted into the insertion hole 414A, the belt structure 404A does not shift in the longitudinal direction of the insertion hole 414A.

The belt structure 404A is a member that connects between the first metal fitting 402A and the second metal fitting 403A. The belt structure 404A has a band shape. The belt structure 404A is formed by using nylon as a material, for example, like the belt of the harness type safety belt 2, so that the second metal fitting 403A can move freely according to the movement of the operator, or the harness type. Like the lanyard of the safety belt 2, it is formed by using aramid fiber as the core material and polyester fiber as the skin material. One end of the belt structure 404A is inserted into the insertion hole 412A, folded back, and sewn so as not to come off from the first metal fitting 402A. Similarly, the other end of the belt structure 404A is inserted into the insertion hole 414A and folded back, and is sewn so as not to come off from the second metal fitting 403A.

In this embodiment, the first metal fitting 402A and the second metal fitting 403A are formed by punching and bending one metal plate.

The connecting metal fitting 401B includes a first metal fitting 402B, a second metal fitting 403B, and a belt structure 404B.

The first metal fitting 402B is a metal fitting that is attached to the body belt 301 and is connected to the second metal fitting 403B via the belt structure 404B. The first metal fitting 402B includes a flat plate 405B, first bent pieces 406B, 407B, second bent pieces 408B, 409B, and insertion holes 410B, 411B, 412B.

In the first bent pieces 406B and 407B, the direction in which the body belt 301 is inserted into the insertion holes 410B and 411B in order to secure a gap for sandwiching the body belt 301 between the first metal fitting 402B and the auxiliary belt 302. Is a piece formed extending from both ends of the flat plate 405B along a direction orthogonal to the direction (direction orthogonal to the longitudinal direction of the body belt 301) toward the auxiliary belt 302. The angle at which the first bent pieces 406B and 407B bend with respect to the surface of the flat plate 405B is an angle of less than 90 degrees (for example, 45 degrees). Further, in the first bent pieces 406B and 407B, the flat plate 405B is used as the auxiliary belt 302 so as not to form an extra gap other than sandwiching the body belt 301 and necessary parts between the first metal fitting 402B and the auxiliary belt 302. On the other hand, it is formed so as to be substantially parallel to each other.

The second bent piece 408B is used to secure a certain distance between the annular metal fitting and the connecting metal fitting 401B when the annular metal fittings such as the D ring and the V-shaped square ring are adjacent to each other (not shown in this embodiment). The flat plate from the end opposite to the flat plate 405B of the first bent piece 406B so as to abut on the sewn portion of the annular metal fitting formed on the auxiliary belt 302 when the body belt 301 is inserted into the annular metal fitting. It is a piece formed so as to extend substantially parallel to 405B. Then, by adopting the second bent piece 408B, the annular metal fitting can be smoothly rotated in the direction of the connecting metal fitting 401B. Similarly, the second bent piece 409B has an auxiliary belt 302 when the body belt 301 is inserted through the V-shaped square ring 303B in order to secure a certain distance between the V-shaped square ring 303B and the connecting metal fitting 401B. The first bent piece 407B extends from the end opposite to the flat plate 405B so as to be substantially parallel to the flat plate 405B so as to abut on the sewn portion 316B of the V-shaped square ring 303B formed in. It is a piece formed by. Then, by adopting the second bent piece 409B, the V-shaped square ring 303B can be smoothly rotated in the direction of the connecting metal fitting 401B.

The insertion hole 410B is a long hole formed at the end of the first bent piece 406B on the side close to the second bent piece 408B for inserting the body belt 301. Similarly, the insertion hole 411B is an elongated hole formed at the end of the first bent piece 407B on the side closer to the second bent piece 409B for inserting the body belt 301. Here, since the first bent pieces 406B and 407B are bent so as to move away from the flat plate 405B as they approach the auxiliary belt 302, the insertion holes 410B and 411B are located closest to the auxiliary belt 302 and both ends of the flat plate 405B. It can be seen that it is formed at a position farther than the distance of. Further, it can be seen that the second bent pieces 408B and 409B come into contact with the auxiliary belt 302 at a position distant from the insertion holes 410B and 411B from the flat plate 405B. Therefore, since the second bent pieces 408B and 409B stably contact the auxiliary belt 302 to suppress the deformation of the auxiliary belt 302, the body belt 301 can be smoothly inserted into the insertion holes 410B and 411B and the buckle 217B. Can be smoothly attached to the connecting metal fitting 401B.

The insertion hole 412B is an elongated hole formed at the end of the flat plate 405B on the side close to the second metal fitting 403B so that the first metal fitting 402B and the second metal fitting 403B are connected via the belt structure 404B. The insertion hole 412B has substantially the same length as the belt structure 404B in the longitudinal direction. As a result, when the belt structure 404B is inserted into the insertion hole 412B, the belt structure 404B does not shift in the longitudinal direction of the insertion hole 412B.

The second metal fitting 403B is a metal fitting to which the buckle 217B is detachably attached. Further, the second metal fitting 403B is a metal fitting that is connected to the first metal fitting 402B via the belt structure 404B and can move freely according to the movement of the operator. In other words, when the first metal fitting 402B is attached to the body belt 301, the second metal fitting 403B is directed toward the worker, away from the worker, and with respect to the first metal fitting 402B according to the movement of the worker. It is a metal fitting that can move in a twisting direction. The second metal fitting 403B includes a fitting piece 413B and an insertion hole 414B.

The fitting piece 413B is one protruding piece having a spear shape that is fitted into the buckle 217B of the harness type safety belt 2. The fitting piece 413B is formed so as to project diagonally from the second metal fitting 403B so as to face the buckle 217B. The above-mentioned diagonal direction is a direction inclined toward the belt retainer 305C with respect to a direction orthogonal to the longitudinal direction of the body belt 301.

When an annular metal fitting (not shown) such as a D ring or a V-shaped square ring is provided at a position between the left waist portion and the rear waist portion of the operator when the operator wears the auxiliary belt 302, the fitting piece 413B Is formed so as to extend from the second metal fitting 403B to a position separated from the annular metal fitting by a predetermined distance X in a direction orthogonal to the longitudinal direction of the body belt 301 so that the buckle 217B does not interfere with the annular metal fitting. Become.

The insertion hole 414B is the end of the second metal fitting 403B on the side closer to the first metal fitting 402B (in other words, the second metal fitting 403B) so that the first metal fitting 402B and the second metal fitting 403B are connected via the belt structure 404B. It is an elongated hole formed at the end opposite to the fitting piece 413B of. The insertion hole 414B has substantially the same length as the belt structure 404B in the longitudinal direction. As a result, when the belt structure 404B is inserted into the insertion hole 414B, the belt structure 404B does not shift in the longitudinal direction of the insertion hole 414B.

The belt structure 404B is a member that connects between the first metal fitting 402B and the second metal fitting 403B. The belt structure 404B has a band shape. The belt structure 404B is formed by using nylon as a material, for example, like the belt of the harness type safety belt 2, so that the second metal fitting 403B can move freely according to the movement of the operator, or the harness type. Like the lanyard of the safety belt 2, it is formed by using aramid fiber as the core material and polyester fiber as the skin material. One end of the belt structure 404B is inserted into the insertion hole 412B and folded back, and is sewn so as not to come off from the first metal fitting 402B. Similarly, the other end of the belt structure 404B is inserted into the insertion hole 414B and folded back, and is sewn so as not to come off from the second metal fitting 403B.

In this embodiment, the first metal fitting 402B and the second metal fitting 403B are formed by punching and bending one metal plate.

<< Modification example of connecting bracket >>
In the present embodiment, when the worker wears the body belt type safety belt 3, the fitting piece 413A (413B) is fitted into the buckle 217A (217B) attached above the body belt type safety belt 3. Therefore, it is formed so as to face upward toward the buckle 217A (217B). However, the present invention is not limited to this, for example, the buckle 217A (217B) is sewn to the relay belt 204A (204B) below the body belt type safety belt 3, and the fitting piece 413A (413B) is the buckle 217A (217B). ) May be formed so that the connecting metal fitting 401A (401B) faces downward. In this case, the buckle 217A (217B) and the connecting metal fitting 401A (401B) do not interfere with the upper body of the operator, so that workability can be improved. Further, since the fitting hole of the buckle 217A (217B) can be visually observed, the fitting piece 413A (413B) can be reliably fitted into the buckle 217A (217B) in combination with the wide movable range of the second metal fitting 403A (403B). Will be. Further, since the buckle 217A (217B) hangs by its own weight so as to be separated from the connecting metal fitting 401A (401B) unless the fitting piece 413A (413B) is fitted, the connecting metal fitting 401A (401B) can be easily removed from the buckle 217A (217B). It becomes possible.

In the present embodiment, the first metal fitting 402A (402B) is formed by subjecting one metal plate to bending or punching. For example, the first metal fitting 402A (402B) may be formed from a metal plate having a thickness sufficient to generate elasticity. In this case, the interference between the body belt 301 and the first metal fitting 402A (402B) can be reduced by the elastic force.

In the present embodiment, the belt structure 404A (404B) is formed of nylon, aramid fiber, polyester fiber, or the like as a material. However, the belt structure 404A (404B) may be formed by using a material having some elasticity. In this case, since the movable range of the second metal fitting 403A (403B) is widened, workability can be improved.

<< Application example of connecting bracket >>
A tool bag 321 for accommodating tools to be picked up by an operator when performing work is suspended from the body belt 301. However, when the tool bag 321 is suspended between the D rings 303A and 303C, when the operator tries to hook the hook 208 of the lanyard 207 on the D rings 303A and 303C, the hook 208 is mistakenly used as the tool bag. If it gets caught in 321, there is a risk that the tool bag 321 will be dropped from the body belt 301. Therefore, the connecting metal fitting 401A (401B) may be attached to the body belt 301 so as to cover the attachment portion of the tool bag 321 to the body belt 301. This makes it possible to reliably prevent the tool bag 321 from falling.

=== Third Embodiment ===
FIG. 15 is an exploded perspective view showing a connecting metal fitting attached to a body belt type safety belt constituting another part of the safety belt according to the present embodiment.

FIG. 16 is a perspective view showing a connecting metal fitting attached to a body belt type safety belt constituting another part of the safety belt according to the present embodiment.

FIG. 17 is an exploded plan view of the safety belt according to the present embodiment when the connecting metal fitting is viewed from the −Y side to the + Y side in FIG.

FIG. 18 is a plan view of the safety belt according to the present embodiment when the connecting metal fitting is viewed from the −Y side to the + Y side in FIG.

FIG. 19 is a plan view of the safety belt according to the present embodiment when the connecting metal fitting is viewed from the + X side to the −X side in FIG.

Hereinafter, the safety belt according to the present embodiment will be described with reference to FIGS. 15 to 19. The connecting metal fittings shown in FIGS. 15 to 19 are the right waist portion and the left waist portion of the body belt type safety belt 3 instead of the connecting metal fittings shown in FIGS. 3A to 5B and the connecting metal fittings shown in FIGS. 12A to 14B, respectively. It is the same metal fitting that is attached to. However, when the connecting metal fittings shown in FIGS. 15 to 19 are adopted, it is necessary to also adopt the buckles shown in FIGS. 15 to 18.

<< Buckle >>
The buckle 501A (501B) is a metal fitting for connecting the harness type safety belt 2 and the body belt type safety belt 3, and is a metal fitting that replaces the buckle 217A (217B) with the relay belt 218A (218B) of the harness type safety belt 2. It is installed as. The buckle 501A (501B) includes a main body 502A (502B) and a cylindrical body 503A (503B).

The main body 502A (502B) is attached to the relay belt 218A (218B).

The cylindrical body 503A (503B) is integrally formed at an end of the main body 502A (502B) opposite to the end to which the relay belt 218A (218B) is attached so that the axis of the cylindrical body 503A (503B) is aligned. There is. The cylindrical body 503A (503B) has a slit 504A (504B) and a communication hole 505A (505B). The slit 504A (504B) is formed along the axis of the cylinder 503A (503B) at a position opposite to the position where the main body 502A (502B) of the cylinder 503A (503B) is attached. The communication hole 505A (505B) has a female screw for screwing with a lock pin 506A (506B) having a male screw, and is on the same side as one surface (+ Z) of the flat plate 502A (502B) and is a cylinder. It is bored at a position centered in the axial direction of the body 503A (503B).

<< Connecting bracket >>
The connecting metal fitting 601A is a metal fitting attached to the body belt 301. The connecting metal fitting 601A includes a flat plate 602A, a first bent piece 603A, 604A, a second bent piece 605A, 606A, an insertion hole 607A, 608A, and a cylindrical body 609A.

The first bent pieces 603A and 604A have a direction in which the body belt 301 is inserted into the insertion holes 607A and 608A in order to secure a gap for sandwiching the body belt 301 between the connecting metal fitting 601A and the auxiliary belt 302. Is a piece formed extending from both ends of the flat plate 602A along the orthogonal direction (the direction orthogonal to the longitudinal direction of the body belt 301) toward the auxiliary belt 302. The angle at which the first bent pieces 603A and 604A bend with respect to the surface of the flat plate 602A is an angle of less than 90 degrees (for example, 45 degrees). Further, in the first bent pieces 603A and 604A, the flat plate 602A has the flat plate 602A with respect to the auxiliary belt 302 so as not to form an extra gap other than sandwiching the body belt 301 and necessary parts between the connecting metal fitting 601A and the auxiliary belt 302. It is formed so as to be substantially parallel.

The second bent piece 605A is formed on the auxiliary belt 302 when the body belt 301 is inserted through the D rings 303A and 303C in order to secure a certain distance between the D ring 303A and the connecting metal fitting 601A. It is a piece formed so as to abut on the sewn portion 315A of the D ring 303A so as to extend substantially parallel to the flat plate 602A from the end opposite to the flat plate 602A of the first bent piece 603A. .. Then, by adopting the second bent piece 605A, the D ring 303A can be smoothly rotated in the direction of the connecting metal fitting 601A. Similarly, the second bent piece 606A is formed on the auxiliary belt 302 when the body belt 301 is inserted through the D rings 303A and 303C in order to secure a certain distance between the D ring 303C and the connecting metal fitting 601A. It is formed so as to extend from the end of the first bent piece 604A opposite to the flat plate 602A so as to be substantially parallel to the flat plate 602A so as to abut on the sewn portion 316A of the D ring 303C. It is a piece. Then, by adopting the second bent piece 606A, the D ring 303C can be smoothly rotated in the direction of the connecting metal fitting 601A.

The insertion hole 607A is an elongated hole formed at the end of the first bent piece 603A on the side close to the second bent piece 605A for inserting the body belt 301. Similarly, the insertion hole 608A is an elongated hole formed at the end of the first folding piece 604A on the side closer to the second folding piece 606A for inserting the body belt 301. Here, since the first bent pieces 603A and 604A are bent so as to move away from the flat plate 602A as they approach the auxiliary belt 302, the insertion holes 607A and 608A are located closest to the auxiliary belt 302 and both ends of the flat plate 602A. It can be seen that it is formed at a position farther than the distance of. Further, it can be seen that the second bent pieces 605A and 606A come into contact with the auxiliary belt 302 at a position distant from the insertion holes 607A and 608A from the flat plate 602A. Therefore, since the deformation of the auxiliary belt 302 is suppressed by the stable contact of the second bent pieces 605A and 606A with the auxiliary belt 302, the body belt 301 can be smoothly inserted into the insertion holes 607A and 608A. Become.

The cylindrical body 609A is integrally formed at the end of the flat plate 602A on the side where the buckle 501A is mounted so that the axis of the cylindrical body 609A is aligned. The cylindrical body 609A has a large diameter portion 610A, 611A, a small diameter portion 612A, and a coupling portion 615A. The large-diameter portions 610A and 611A and the small-diameter portions 612A are continuously formed coaxially with the cylindrical body 609A along the axial direction of the cylindrical body 609A. The large diameter portions 610A and 611A are portions forming both sides of the cylindrical body 609A. The diameters of the large diameter portions 610A and 611A are slightly shorter than the inner diameter of the cylindrical body 503A. The small diameter portion 612A is a portion sandwiched between the large diameter portions 610A and 611A to form the center of the cylindrical body 609A. The length of the small diameter portion 612A is substantially the same as the diameter of the communication hole 505A. The coupling portion 615A is integrally formed between the large diameter portions 610A and 611A, the small diameter portion 612A, and the flat plate 602A. The connecting portion 615A is a portion that guides the slit 504A when the cylindrical body 609A is fitted into the cylindrical body 503A, and has a width slightly wider than the width of the slit 504A.

The connecting metal fitting 601B is a metal fitting attached to the body belt 301. The connecting metal fitting 601B includes a flat plate 602B, a first bent piece 603B, 604B, a second bent piece 605B, 606B, an insertion hole 607B, 608B, and a cylindrical body 609B.

The first bent pieces 603B and 604B have a direction in which the body belt 301 is inserted into the insertion holes 607B and 608B in order to secure a gap for sandwiching the body belt 301 between the connecting metal fitting 601B and the auxiliary belt 302. Is a piece formed extending from both ends of the flat plate 602B along the orthogonal direction (the direction orthogonal to the longitudinal direction of the body belt 301) toward the auxiliary belt 302. The angle at which the first bent pieces 603B and 604B bend with respect to the surface of the flat plate 602B is an angle of less than 90 degrees (for example, 45 degrees). Further, in the first bent pieces 603B and 604B, the flat plate 602B has the flat plate 602B with respect to the auxiliary belt 302 so as not to form an extra gap other than sandwiching the body belt 301 and necessary parts between the connecting metal fitting 601B and the auxiliary belt 302. It is formed so as to be substantially parallel.

The second bent piece 605B is used to secure a certain distance between the annular metal fitting and the connecting metal fitting 601B when the annular metal fittings such as the D ring and the V-shaped square ring are adjacent to each other (not shown in this embodiment). The flat plate from the end opposite to the flat plate 602B of the first bent piece 603B so as to come into contact with the sewn portion of the annular metal fitting formed on the auxiliary belt 302 when the body belt 301 is inserted into the annular metal fitting. It is a piece formed by extending so as to be substantially parallel to 602B. Then, by adopting the second bent piece 605B, the annular metal fitting can be smoothly rotated in the direction of the connecting metal fitting 601B. Similarly, the second bent piece 606B has an auxiliary belt 302 when the body belt 301 is inserted through the V-shaped square ring 303B in order to secure a certain distance between the V-shaped square ring 303B and the connecting metal fitting 601B. The first bent piece 604B extends from the end opposite to the flat plate 602B so as to be substantially parallel to the flat plate 602B so as to abut on the sewn portion 316B of the V-shaped square ring 303B formed in. It is a piece formed by. Then, by adopting the second bent piece 606B, the V-shaped square ring 303B can be smoothly rotated in the direction of the connecting metal fitting 601B.

The insertion hole 607B is a long hole formed at the end of the first bent piece 603B on the side close to the second bent piece 605B for inserting the body belt 301. Similarly, the insertion hole 608B is an elongated hole formed at the end of the first folding piece 604B on the side closer to the second folding piece 606B for inserting the body belt 301. Here, since the first bent pieces 603B and 604B are bent so as to move away from the flat plate 602B as they approach the auxiliary belt 302, the insertion holes 607B and 608B are located closest to the auxiliary belt 302 and both ends of the flat plate 602B. It can be seen that it is formed at a position farther than the distance of. Further, it can be seen that the second bent pieces 605B and 606B come into contact with the auxiliary belt 302 at a position distant from the insertion holes 607B and 608B from the flat plate 602B. Therefore, since the deformation of the auxiliary belt 302 is suppressed by the stable contact of the second bent pieces 605B and 606B with the auxiliary belt 302, the body belt 301 can be smoothly inserted into the insertion holes 607B and 608B. Become.

The cylindrical body 609B is integrally formed at the end of the flat plate 602B on the side where the buckle 501B is mounted so that the axis of the cylindrical body 609B is aligned. The cylindrical body 609B has a large diameter portion 610B, 611B, a small diameter portion 612B, and a coupling portion 615B. The large diameter portions 610B and 611B and the small diameter portions 612B are continuously formed coaxially with the cylindrical body 609B along the axial direction of the cylindrical body 609B. The large diameter portions 610B and 611B are portions forming both sides of the cylindrical body 609B. The diameters of the large diameter portions 610B and 611B are slightly shorter than the inner diameter of the cylindrical body 503B. The small diameter portion 612B is a portion sandwiched between the large diameter portions 610B and 611B to form the center of the cylindrical body 609B. The length of the small diameter portion 612B is substantially the same as the diameter of the communication hole 505B. The connecting portion 615B is integrally formed between the large diameter portions 610B and 611B, the small diameter portion 612B, and the flat plate 602B. The connecting portion 615B is a portion that guides the slit 504B when the cylindrical body 609B is fitted into the cylindrical body 503B, and has a width slightly wider than the width of the slit 504B.

In the present embodiment, the main body 502A (502B) and the cylindrical body 503A (503B) are formed by, for example, punching and bending a metal plate, and the buckle 501A (501B) is, for example, the main body 502A ( It is formed by welding the 502B) and the cylindrical body 503A (503B). Further, the connecting metal fitting 601A (601B) is formed by, for example, punching and bending a metal plate except for the cylindrical body 609A (609B), and the cylindrical body 609A (609B) is formed into, for example, a metal block. On the other hand, it is formed by performing a machined process, and the connecting metal fitting 601A (601B) is formed by performing a welding process with, for example, a columnar body 609A (609B).

<< Example of mounting procedure for buckle and connecting bracket >>
First, the end of the connecting portion 615A (615B) is inserted from the end of the slit 504A (504B), and the cylindrical body 609A (609B) is moved to the cylindrical body 503A while moving the connecting portion 615A (615B) along the slit 504A (504B). It is fitted into (503B). When the cylindrical body 609A (609B) has been fitted into the cylindrical body 503A (503B), the communication holes 505A (505B) communicate with the small diameter portion 612A (612B) so as to face the small diameter portion 612A (612B).

Next, the lock pin 506A (506B) is inserted into the communication hole 505A (505B) while being screwed. After inserting the lock pin 506A (506B) into the communication hole 505A (505B), the tip of the lock pin 506A (506B) stops in front of the small diameter portion 612A (612B), and the large diameter portion 610A (610B) and the small diameter portion 610A (610B). It is sandwiched between the stepped surface of the portion 612A (612B) and the stepped surface of the large diameter portion 611A (611B) and the small diameter portion 612A (612B).

When the above mounting procedure is completed, the buckle 501A (501B) is mounted so as not to come off the connecting metal fitting 601A (601B), and is mounted around the axis of the cylindrical body 609A (609B) according to the movement of the operator. It is possible to rotate in a direction closer to the worker or in a direction away from the worker.

<< Modification example of connecting bracket >>
In the present embodiment, when the worker wears the body belt type safety belt 3, the columnar body 609A (609B) is fitted into the buckle 501A (501B) attached above the body belt type safety belt 3. Therefore, it is formed so as to face upward toward the buckle 501A (501B). However, the present invention is not limited to this, for example, the buckle 501A (501B) is sewn to the relay belt 204A (204B) below the body belt type safety belt 3, and the columnar body 609A (609B) is attached to the buckle 501A (501B). ) May be formed so that the connecting metal fitting 601A (601B) faces downward. In this case, the buckle 501A (501B) and the connecting metal fitting 601A (601B) do not interfere with the upper body of the worker, so that workability can be improved. Further, since the buckle 501A (501B) hangs by its own weight so as to be separated from the connecting metal fitting 601A (601B) unless it is connected to the connecting metal fitting 601A (601B), the connecting metal fitting 601A (601B) can be easily removed from the buckle 501A (501B). It becomes possible.

<< Application example of connecting bracket >>
A tool bag 321 for accommodating tools to be picked up by an operator when performing work is suspended from the body belt 301. However, when the tool bag 321 is suspended between the D rings 303A and 303C, when the operator tries to hook the hook 208 of the lanyard 207 on the D rings 303A and 303C, the hook 208 is mistakenly used as the tool bag. If it gets caught in 321, there is a risk that the tool bag 321 will be dropped from the body belt 301. Therefore, the connecting metal fitting 601A (601B) may be attached to the body belt 301 so as to cover the attachment portion of the tool bag 321 to the body belt 301. This makes it possible to reliably prevent the tool bag 321 from falling.

=== Summary ===
As described above, in the present embodiment, the safety belt 1 is provided integrally with the shoulder belt 201A (201B) and the shoulder belt 201A (201B) attached to the shoulder of the worker, and the thigh of the worker. The harness type safety belt 2 including the thigh belt 203A (203B) to be attached to the shoulder belt 201A (201B) or the buckle provided integrally with the shoulder belt 201A (201B) or the thigh belt 203A (203B), and the worker's torso. A torso belt type safety belt 3 including a torso belt 301, a connecting metal fitting provided integrally with the torso belt 301 and detachably attached to a buckle, and a torso belt type safety belt 3 is provided. In the case of the connecting metal fittings 304A (304B) and the connecting metal fittings 401A (401B), the buckle 217A (217B) approaches the worker according to the movement of the worker in a part of the metal fittings on the side where the buckle 217A (217B) is mounted. It is formed to move in a direction or in a direction away from the worker. Further, in the case of the connecting metal fitting 601A (601B), a part of the metal fitting on the side where the buckle 501A (501B) is mounted is in a direction in which the buckle 501A (501B) approaches the worker according to the movement of the worker or from the worker. It is formed to move away.

Further, according to the present embodiment, since the connecting metal fitting is formed so that the buckle moves in the direction toward the worker or in the direction away from the worker according to the movement of the worker, the connecting metal fitting is formed according to the content of the work at a high place. , The mode in which the harness type safety belt and the body belt type safety belt are used as one or as a separate body can be quickly switched.

Further, in the case of the connecting metal fitting 304A (304B) in the present embodiment, the first metal fitting 306A (306B) attached to the body belt 301 and the second metal fitting 307A (307B) attached to the buckle 217A (217B) are used. Connection for connecting the first metal fitting 306A (306B) and the second metal fitting 307A (307B) so that the second metal fitting 307A (307B) moves in the direction toward the worker or in the direction away from the worker according to the movement of the worker. It has a member 308A (308B) and. Further, in the case of the connecting metal fitting 401A (401B), the first metal fitting 402A (402B) attached to the body belt 301, the second metal fitting 403A (403B) attached to the buckle 217A (217B), and the second metal fitting 403A ( 403B) is a connecting member 404A (404B) that connects the first metal fittings 402A (402B) and the second metal fittings 403A (403B) so that the first metal fittings 402A (402B) and the second metal fittings 403A (403B) move in a direction toward or away from the worker according to the movement of the worker. And have.

Further, in the present embodiment, the connecting member used for the connecting metal fitting 304A (304B) is such that the second metal fitting 307A (307B) approaches the worker or moves away from the worker with respect to the first metal fitting 306A (306B). It is a hinge structure 308A (308B) connecting the first metal fitting 306A (306B) and the second metal fitting 307A (307B) so as to rotate.

Further, in the present embodiment, the connecting member used for the connecting metal fitting 401A (401B) is the first metal fitting 402A (402B) so that the second metal fitting 403A (403B) moves in the direction toward the worker or in the direction away from the worker. ) And the belt structure 404A (404B) connecting the second metal fitting 403A (403B).

Further, in the present embodiment, the connecting metal fitting 601A (601B) has a cylindrical body 609A (609B) at the tip on the side where the buckle 501A (501B) is mounted, and the buckle 501A (501B) has a buckle 501A (501B). Has a cylindrical body 503A (503B) into which the cylindrical body 609A (609B) is fitted so as to rotate about the cylindrical body 609A (609B) in a direction approaching the operator or a direction away from the operator.

Further, in the present embodiment, the cylindrical body 609A (609B) has a small diameter portion 612A (612B) sandwiched between the large diameter portions 610A (610B) and 611A (611B) on both sides, and the cylindrical body 503A (503B) has a cylindrical body 503A (503B). When the cylindrical body 609A (609B) is fitted, it communicates with the small diameter portion 612A (612B), and the lock pin 506A (506B) for connecting the cylindrical body 609A (609B) and the cylindrical body 503A (503B) has a large diameter. Communication hole 505A (505B) inserted so as to be sandwiched between the stepped surface of the portion 610A (610B) and the small diameter portion 612A (612B) and the stepped surface of the large diameter portion 611A (611B) and the small diameter portion 612A (612B). Have.

Further, in the present embodiment, the buckle 217A (217B) and the buckle 501A (501B) have the shoulder belt 201A (201B) and the thigh belt 203A (203B) at the joining position of the shoulder belt 201A (201B) and the thigh belt 203A (203B). It is provided integrally with.

It should be noted that the above embodiment is for facilitating the understanding of the present invention, and is not for limiting the interpretation of the present invention. The present invention can be modified and improved without departing from the spirit thereof, and the present invention also includes an equivalent thereof.

1 Safety belt 2 Harness type safety belt 3 Body belt type safety belt 201A, 201B Shoulder belt 202 Chest belt 203A, 203B Thigh belt 204A, 204B, 205A, 205B, 215, 218A, 218B Relay belt 206 Bottom support 207 Lanyard 208 Hook 209A , 209B, 214A, 214B Belt stopper 210A, 210B Suture position 211 Crossing position 212 Fitting pieces 213,217A, 217B, 501A, 501B Buckle 216 Ring metal fittings 301 Body belt 302 Auxiliary belt 303A, 303C D ring 303B V type square ring 304A, 304B, 401A, 401B, 601A, 601B Connecting bracket 305A, 305B, 305C Belt retainer 306A, 306B, 402A, 402B First bracket 307A, 307B, 403A, 403B Second bracket 308A, 308B Hinge structure 309A, 310A, 309B, 310B, 406A, 407A, 406B, 407B, 603A, 604A, 603B, 604B 1st bent piece 311A, 312A, 311B, 312B, 408A, 409A, 408B, 409B, 605A, 606A, 605B, 606B 2nd bent piece 313A, 314A, 313B, 314B, 410A, 411A, 410B, 411B, 421A, 414A, 421B, 414B, 607A, 608A, 607B, 608B Insertion holes 317A, 317B, 413A, 413B Insertion pieces 318A, 319A, 318B Body 320A, 320B Lock pin 321 Tool bag 322A, 322B, 405A, 405B, 602A, 602B Flat plate 404A, 404B Belt structure 502A, 502B Main body 503A, 503B Cylindrical body 504A, 504B Slit 505A, 505B Communication hole 506A, 506B Lock pin 609A, 609B Cylindrical body 610A, 611A, 610B, 611B Large diameter part 612A, 612B Small diameter part 613A, 614A, 613B, 614B Inclined part 615A, 615B Coupling part

Claims (7)

A shoulder belt attached to the shoulder of the worker, a thigh belt integrally provided with the shoulder belt and attached to the thigh of the worker, and a buckle provided integrally with the shoulder belt or the thigh belt. Harness type safety belt including,
A torso belt type safety belt including a torso belt attached to the torso of the worker, a connecting metal fitting provided integrally with the torso belt and detachably attached to the buckle, and a torso belt type safety belt.
Equipped with
Some of the metal fittings on the side where the buckle is mounted are formed so that the buckle moves in a direction toward the worker or away from the worker according to the movement of the worker. A safety belt characterized by that. The connecting metal fitting is
The first metal fitting attached to the body belt and
The second metal fitting attached to the buckle and
A connecting member connecting the first metal fitting and the second metal fitting so that the second metal fitting moves in a direction toward the worker or a direction away from the worker according to the movement of the worker.
The safety belt according to claim 1, wherein the safety belt comprises. The connecting member is
A hinge structure that connects the first metal fitting and the second metal fitting so that the second metal fitting rotates in a direction toward the worker or a direction away from the worker with respect to the first metal fitting. The safety belt according to claim 2. The connecting member is
2. The invention according to claim 2, wherein the second metal fitting is a belt structure for connecting the first metal fitting and the second metal fitting so that the second metal fitting moves in a direction toward the worker or a direction away from the worker. Safety belt. The connecting metal fitting is
It has a cylindrical body at the tip on the side where the buckle is mounted, and has a cylindrical body.
The buckle is
The first aspect of the present invention is characterized in that the buckle has a cylindrical body into which the cylindrical body is fitted so that the buckle rotates in a direction toward the worker or a direction away from the worker about the cylindrical body. Safety belt. The cylinder is
It has a small diameter part sandwiched between large diameter parts on both sides,
The cylinder is
When the cylinder is fitted, the cylinder communicates with the small diameter portion, and the lock pin for connecting the cylinder and the cylinder is sandwiched between the stepped surface between the large diameter portion and the small diameter portion. The safety belt according to claim 5, wherein the safety belt has a communication hole to be inserted into the. The buckle is
The safety belt according to claim 1, wherein the safety belt is integrally provided together with the shoulder belt and the thigh belt at the joint position of the shoulder belt and the thigh belt.

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