JP7044324B2 - 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, an object of the present invention is to provide a safety belt having a structure in which the body belt type and harness type safety belts can be reliably attached and detached.

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 safety band comprising a connecting metal fitting to be attached and a body belt type safety band including the connecting metal fitting, wherein the connecting metal fitting has an fitting piece to be fitted into the buckle, and the buckle has the fitting piece. The space has a space communicating with the opening to be inserted, and the space is such that when the buckle is attached to the connecting metal fitting, the buckle approaches the worker according to the movement of the worker or the worker. The fitting piece exhibits a shape that spreads radially as it goes toward the insertion direction so as to move away from the insertion piece.

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

According to the present invention, the buckle freely moves in the direction toward the worker or in the direction away from the worker according to the movement of the worker, so that the harness type safety belt and the torso belt type safety can be used according to the content of the aerial work. It is possible to quickly switch the mode in which the belt is 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 this embodiment, and is the 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 this 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 this 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 this embodiment. In the safety belt according to the present 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 present embodiment, it is a plan 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 present 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 present 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 the other connecting metal fitting is adjacent to the annular metal fitting in the safety belt which concerns on this 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 this embodiment. It is an example of a buckle in the safety belt which concerns on this embodiment, and is the front view which shows the state before the buckle is attached to a connecting metal fitting. It is an example of a buckle in the safety belt which concerns on this embodiment, and is the side view which shows the state before the buckle is attached to a connecting metal fitting. It is an example of a buckle in the safety belt which concerns on this embodiment, and is the front view which shows the state after the buckle is attached to a connecting metal fitting. It is an example of a buckle in the safety belt which concerns on this embodiment, and is the side view which shows the state after the buckle is attached to a connecting metal fitting. It is an example of a buckle in the safety belt which concerns on this embodiment, and is the side view which shows the state which the buckle moved in the direction approaching a worker. It is an example of a buckle in the safety belt which concerns on this embodiment, and is the side view which shows the state which the buckle moved in the direction away from a worker. It is a front view which shows the state before the buckle is attached to the connecting metal fitting, which is another example of a buckle in the safety belt which concerns on this embodiment. It is a side view which shows the state before the buckle is attached to the connecting metal fitting, which is another example of a buckle in the safety belt which concerns on this embodiment. It is a front view which shows the state after the buckle is attached to the connecting metal fitting, which is another example of a buckle in the safety belt which concerns on this embodiment. It is a side view which shows the state after the buckle is attached to the connecting metal fitting, which is another example of a buckle in the safety belt which concerns on this embodiment. It is another example of a buckle in the safety belt which concerns on this embodiment, and is the side view which shows the state which the buckle moved in the direction approaching a worker. It is another example of the buckle in the safety belt which concerns on this embodiment, and is the side view which shows the state which the buckle moved in the direction away from a worker. It is a figure which shows the state before connecting the connecting metal fitting to a buckle in the safety belt which concerns on this embodiment from the side which becomes the back 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 this embodiment from the side which becomes the back of an operator. It is a figure which shows the state before connecting the connecting metal fitting to a buckle in the state of wearing the safety belt which concerns on this embodiment from the side of the back of an operator. 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 this embodiment from the side of the back of an operator. It is a figure which shows a mode that a worker wears a safety belt which concerns on this 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 this embodiment.

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

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 an example of a buckle in the safety belt according to the present embodiment, and is a front view showing a state before the buckle is attached to the connecting metal fitting. FIG. 8B is an example of a buckle in the safety belt according to the present embodiment, and is a side view showing a state before the buckle is attached to the connecting metal fitting. FIG. 9A is an example of a buckle in the safety belt according to the present embodiment, and is a front view showing a state after the buckle is attached to the connecting metal fitting. FIG. 9B is an example of a buckle in the safety belt according to the present embodiment, and is a side view showing a state after the buckle is attached to the connecting metal fitting. FIG. 10A is an example of a buckle in the safety belt according to the present embodiment, and is a side view showing how the buckle moves in a direction approaching the operator. FIG. 10B is an example of a buckle in the safety belt according to the present embodiment, and is a side view showing how the buckle moves in a direction away from the operator. FIG. 11A is another example of the buckle in the safety belt according to the present embodiment, and is a front view showing a state before the buckle is attached to the connecting metal fitting. FIG. 11B is a side view showing another example of the buckle in the safety belt according to the present embodiment, which is a state before the buckle is attached to the connecting metal fitting. FIG. 12A is another example of the buckle in the safety belt according to the present embodiment, and is a front view showing a state after the buckle is attached to the connecting metal fitting. FIG. 12B is another example of the buckle in the safety belt according to the present embodiment, and is a side view showing a state after the buckle is attached to the connecting metal fitting. FIG. 13A is another example of the buckle in the safety belt according to the present embodiment, and is a side view showing how the buckle moves in a direction approaching the operator. FIG. 13B is another example of the buckle in the safety belt according to the present embodiment, and is a side view showing how the buckle moves in a direction away from the operator. FIG. 14A 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. 14B 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. 15A is a partially enlarged view showing a state before connecting the connecting metal fitting to the buckle from the back side of the operator while wearing the safety belt according to the present embodiment. FIG. 15B is a partially enlarged view showing a state after connecting the connecting metal fitting to the buckle from the side of the back of the worker while wearing the safety belt according to the present embodiment. FIG. 16 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. 17 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 17.

=== 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 metal fitting main body 306A, an fitting piece 307A, a first bent piece 308A, 309A, a second bent piece 310A, 311A, and an insertion hole 312A, 313A. In the present embodiment, the connecting metal fitting 304A is formed by punching and bending one metal plate, so that the metal plate main body 306A, the fitting piece 307A, and the first bent piece 308A are formed from one metal plate. , 309A, the second bent pieces 310A, 311A, and the insertion holes 312A, 313A are integrally formed as a metal fitting. Further, the connecting metal fitting 304A is provided for each part of the fitting piece 307A, the first bent piece 308A, 309A (including the insertion holes 312A, 313A), and the second bent piece 310A, 311A, which are individually prepared in advance. It may be a metal fitting integrally formed by performing welding.

The fitting piece 307A 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 307A is formed so as to project diagonally from the metal fitting body 306A 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 be adjacent to the D ring 303C. In this case, since the fitting piece 307A 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 307A 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 extends from the metal fitting body 306A and is formed.

The first bent pieces 308A and 309A have a direction in which the body belt 301 is inserted into the insertion holes 312A and 313A in order to secure a gap for sandwiching the body belt 301 between the metal fitting body 306A and the auxiliary belt 302. Is a piece formed extending from both ends of the metal fitting body 306A along the orthogonal 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 308A and 309A bend with respect to the surface of the metal fitting body 306A is an angle of less than 90 degrees (for example, 45 degrees). Further, as the metal fitting body 306A approaches the fitting piece 307A from the end opposite to the fitting piece 307A, the metal fitting body 306A gradually moves away from the auxiliary belt 302 (the shape in which the metal fitting body 306A is inclined with respect to the auxiliary belt 302). As the first bent pieces 308A and 309A approach the fitting piece 307A from the end opposite to the fitting piece 307A of the metal fitting body 306A, the distance between the metal fitting body 306A and the auxiliary belt 302 increases. It is formed to gradually become longer. Then, by adopting the first bent pieces 308A and 309A, the space between the connecting metal fitting 304A and the auxiliary belt 302 is secured while ensuring a gap for sandwiching the body belt 301 between the metal fitting main body 306A and the auxiliary belt 302. Since the distance between the fitting piece 307A and the auxiliary belt 302 is the longest of the distances, the buckle 217A can be smoothly attached to the connecting metal fitting 304A.

The second bent piece 310A 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. A piece formed so as to abut on the sewn portion 314A of the D ring 303A so as to extend substantially parallel to the metal fitting body 306A from the end opposite to the metal fitting body 306A of the first bent piece 308A. Is. Then, by adopting the second bent piece 310A, the D ring 303A can be smoothly rotated in the direction of the connecting metal fitting 304A. Similarly, 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 303C and the connecting metal fitting 304A. Formed extending from the end of the first bent piece 309A opposite to the metal fitting body 306A so as to be substantially parallel to the metal fitting body 306A so as to abut on the sewn portion 315A of the D ring 303C. It is a piece to be done. Then, by adopting the second bent piece 311A, the D ring 303C can be smoothly rotated in the direction of the connecting metal fitting 304A.

The insertion hole 312A is an elongated hole formed at the end of the first bent piece 308A on the side close to the second bent piece 310A in order to insert the body belt 301. Similarly, the insertion hole 313A is an elongated hole formed at the end of the first folding piece 309A on the side closer to the second folding piece 311A for inserting the body belt 301. Here, since the first bent pieces 308A and 309A are bent so as to move away from the metal fitting body 306A as they approach the auxiliary belt 302, the insertion holes 312A and 313A are located closest to the auxiliary belt 302 and the metal fitting body 306A. It can be seen that it is formed at a position farther than the distance between both ends of. Further, it can be seen that the second bent pieces 310A and 311A come into contact with the auxiliary belt 302 at a position distant from the insertion holes 312A and 313A from the metal fitting body 306A. Therefore, since the second bent pieces 310A and 311A 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 312A and 313A and the buckle 217A. Can be smoothly attached to the connecting metal fitting 304A.

The connecting metal fitting 304B includes a metal fitting body 306B, an fitting piece 307B, a first bent piece 308B, 309B, a second bent piece 310B, 311B, and an insertion hole 312B, 313B. In the present embodiment, the connecting metal fitting 304B is the same as the connecting metal fitting 304A, by punching and bending one metal plate, from one metal plate to the metal fitting body 306B and the fitting piece 307B. , The first bent piece 308B, 309B, the second bent piece 310B, 311B, and the insertion holes 312B, 313B are integrally formed as a metal fitting. Further, the connecting metal fitting 304B is provided for each part of the fitting piece 307B, the first bent pieces 308B, 309B (including the insertion holes 312B, 313B), and the second bent pieces 310B, 311B, which are individually prepared in advance. It may be a metal fitting integrally formed by performing welding.

The fitting piece 307B 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 307B is formed so as to project diagonally from the metal fitting body 306B 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. The connecting metal fitting 304B is slidable along the longitudinal direction of the body belt 301 in the region adjacent to the V-shaped square ring 303B. The fitting piece 307B has a shape symmetrical to that of the fitting piece 307A.

The first bent pieces 308B and 309B have a direction in which the body belt 301 is inserted into the insertion holes 312B and 313B in order to secure a gap for sandwiching the body belt 301 between the metal fitting body 306B and the auxiliary belt 302. Is a piece formed extending from both ends of the metal fitting body 306B along the orthogonal 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 308B and 309B bend with respect to the surface of the metal fitting body 306B is an angle of less than 90 degrees (for example, 45 degrees). Further, as the metal fitting body 306B approaches the fitting piece 307B from the end opposite to the fitting piece 307B, the metal fitting body 306B gradually moves away from the auxiliary belt 302 (the shape in which the metal fitting body 306B is inclined with respect to the auxiliary belt 302). As the first bent pieces 308B and 309B approach the fitting piece 307B from the end opposite to the fitting piece 307B of the metal fitting body 306B, the distance between the metal fitting body 306B and the auxiliary belt 302 increases. It is formed to gradually become longer. Then, by adopting the first bent pieces 308B and 309B, while securing a gap for sandwiching the body belt 301 between the metal fitting body 306B and the auxiliary belt 302, between the connecting metal fitting 304B and the auxiliary belt 302. Since the distance between the fitting piece 307B and the auxiliary belt 302 is the longest of the distances, the buckle 217B can be smoothly attached to the connecting metal fitting 304B.

The second bent piece 310B is a piece formed so as to extend from the end of the first bent piece 308B opposite to the metal fitting body 306B so as to be substantially parallel to the metal fitting body 306B. Further, the second bent piece 311B is attached to the auxiliary belt 302 when the body belt 301 is inserted into 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 309B extends from the end opposite to the metal fitting body 306B so as to be substantially parallel to the metal fitting body 306B so as to abut on the sewn portion 315B of the formed V-shaped square ring 303B. It is a piece formed by. Then, by adopting the second bent piece 311B, the V-shaped square ring 303B can be smoothly rotated in the direction of the connecting metal fitting 304B.

The insertion hole 312B is an elongated hole formed at the end of the first bent piece 308B on the side close to the second bent piece 310B for inserting the body belt 301. Similarly, the insertion hole 313B is an elongated hole formed at the end of the first bent piece 309B on the side closer to the second bent piece 311B for inserting the body belt 301. Here, since the first bent pieces 308B and 309B are bent so as to move away from the metal fitting body 306B as they approach the auxiliary belt 302, the insertion holes 312B and 313B are located closest to the auxiliary belt 302 and the metal fitting body 306B. It can be seen that it is formed at a position farther than the distance between both ends of the. Further, it can be seen that the second bent pieces 310B and 311B come into contact with the auxiliary belt 302 at a position distant from the insertion holes 312B and 313B from the metal fitting body 306B. Therefore, since the deformation of the auxiliary belt 302 is suppressed by the stable contact of the second bent pieces 310B and 311B with the auxiliary belt 302, the body belt 301 is smoothly inserted into the insertion holes 312B and 313B and the buckle 217B. Can be smoothly attached to the connecting metal fitting 304B.

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 307B Is formed so as to extend from the metal fitting body 306B 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. .. Further, when the connecting metal fitting 304B moves to the side of the annular metal fitting, the second bent piece 310B comes into contact with the sewn portion (not shown) of the annular metal fitting formed on the auxiliary belt 302, so that the annular metal fitting is connected to the connecting metal fitting. It can be smoothly rotated in the direction of 304B.

<< Modification example of connecting bracket >>
In the present embodiment, when the worker wears the torso belt type safety belt 3, the fitting piece 307A (307B) is fitted into the buckle 217A (217B) attached above the torso 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 307A (307B) 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 operator, so that workability can be improved. Further, since the fitting hole of the buckle 217A (217B) can be visually observed, the fitting piece 307A (307B) can be reliably fitted into the buckle 217A (217B). 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 307A (307B) 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 connecting metal fitting 304A (304B) is formed by subjecting one metal plate to bending or punching. For example, the connecting metal fitting 304A (304B) 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 connecting metal fitting 304A (304B) can be reduced by the elastic force.

<< Application example of connecting bracket >>
A tool bag 316 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 316 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 mistakenly uses the tool bag. If it gets caught in the 316, the tool bag 316 may 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 316 to the body belt 301. This makes it possible to reliably prevent the tool bag 316 from falling.

<< Buckle >>
An example of the buckle 217A (217B) will be described with reference to FIGS. 8A to 10B.

The buckle 217A (217B) is formed so as to freely move in a direction toward the worker or a direction away from the worker according to the movement of the worker in a state where the fitting piece 307A (307B) is fitted. The buckle 217A (217B) has a holding member 219A (219B) and a space 220A (220B) inside, and a release button 221A (221B) outside.

The holding member 219A (219B) is a member that holds the fitting piece 307A (307B) by an elastic force. The holding member 219A (219B) has, for example, a set of elastic pieces 222A (222B) arranged to face each other so as to sandwich the fitting piece 307A (307B) inserted into the opening of the buckle 217A (217B). There is. The set of elastic pieces 222A (222B) has, for example, an inclined surface 223A on which the fitting piece 307A (307B) slides so that the set of elastic pieces 222A (222B) deforms in a direction away from the elastic force. When (223B) and the fitting piece 307A (307B) finish sliding on the inclined surface 223A (223B), the fitting piece 307A returns as the set of elastic pieces 222A (222B) returns in the approaching direction due to the elastic force. It has a mounting surface 224A (224B) on which (307B) is mounted so as not to come off the buckle 217A (217B). Further, the holding member 219A (219B) has a projecting piece 225A (225B) projecting to the side opposite to the side facing the fitting piece 307A (307B) of the set of elastic pieces 222A (222B).

The space 220A (220B) is a space communicating with the opening of the buckle 217A (217B), and the projecting pieces 225A (225B) are stably held in the space 220A (220B) so that the holding member 219A (219B) is stably held in the space 220A (220B). ) Has an fitting hole 226A (226B) into which the) is fitted. The space 220A (220B) is inclined radially from the fitting hole 226A (226B) toward the opening of the buckle 217A (217B) in the thickness direction of the buckle 217A (217B) (the direction toward the worker or the direction away from the worker). At the same time, it has a shape that inclines radially from the fitting hole 226A (226B) toward the side opposite to the opening of the buckle 217A (217B). Therefore, once the fitting piece 307A (307B) is held by the holding member 219A (219B), the buckle 217A (217B) of the fitting piece 307A (307B) within the range in which the space 220A (220B) is radially inclined. With the holding position as the center, it is possible to freely rotate in a direction closer to the worker or a direction away from the worker according to the movement of the worker.

The release button 221A (221B) is a button that is pressed toward the inside of the buckle 217A (217B) to give a force for the set of elastic pieces 222A (222B) to deform in the direction away from the elastic force. Is. Therefore, when the release button 221A (221B) is pressed, the fitting piece 307A (307B) can be removed from the buckle 217A (217B).

Next, another example of the buckle 217A (217B) will be described with reference to FIGS. 11A to 13B.

The buckle 217A (217B) is formed so as to freely move in a direction toward the worker or a direction away from the worker according to the movement of the worker in a state where the fitting piece 307A (307B) is fitted. The buckle 217A (217B) has a holding member 227A (227B) and a space 228A (228B) inside, and a release button 229A (229B) outside.

The holding member 227A (227B) is a member that holds the fitting piece 307A (307B) by an elastic force. The holding member 227A (227B) has, for example, a set of elastic pieces 230A (230B) arranged facing each other so as to sandwich the fitting piece 307A (307B) inserted into the opening of the buckle 217A (217B). There is. The set of elastic pieces 230A (230B) has, for example, an inclined surface 231A on which the fitting piece 307A (307B) slides so that the set of elastic pieces 230A (230B) deforms in a direction away from the elastic force. When (231B) and the fitting piece 307A (307B) finish sliding on the inclined surface 231A (231B), the fitting piece 307A returns as the set of elastic pieces 230A (230B) returns in the approaching direction due to the elastic force. It has a mounting surface 232A (232B) on which (307B) is mounted so as not to come off the buckle 217A (217B). Further, the holding member 227A (227B) has a projecting piece 233A (233B) projecting to the side opposite to the side facing the fitting piece 307A (307B) of the set of elastic pieces 230A (230B).

The space 228A (228B) is a space communicating with the opening of the buckle 217A (217B) so that the holding member 227A (227B) is stably held in the space 228A (228B) in the vicinity of the opening. It has a fitting hole 234A (234B) into which the protrusion 233A (233B) is fitted. The space 228A (228B) is directed from the fitting hole 234A (234B) to the fitting piece 307A (307B) in the thickness direction of the buckle 217A (217B) (the direction toward the worker or the direction away from the worker). It has a shape that slopes radially as it goes along. Therefore, once the fitting piece 307A (307B) is held by the holding member 219A (219B), the buckle 217A (217B) of the fitting piece 307A (307B) within the range in which the space 228A (228B) is radially inclined. With the holding position as the center, it is possible to freely rotate in a direction closer to the worker or a direction away from the worker according to the movement of the worker.

The release button 229A (229B) is a button that gives a force for the set of elastic pieces 230A (230B) to be deformed in a direction away from the elastic force by pushing toward the inside of the buckle 217A (217B). Is. Therefore, when the release button 229A (229B) is pressed, the fitting piece 307A (307B) can be removed from the buckle 217A (217B).

The buckle 217A (217B) shown in FIGS. 11A to 13B may be adopted when the length of the fitting piece 307A (307B) is set to be relatively long.

In the body belt type safety belt 3 having the configuration as described above, the fitting pieces 307A and 307B 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 307A and 307B 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.

=== An example of how to wear a 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 307A and 307B into the buckles 217A and 217B, respectively, and connects the harness type safety belt 2 and the body belt type safety belt 3.

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.

=== Summary ===
As described above, the safety band 1 according to the present embodiment 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. Harness type safety band 2 including a thigh belt 203A (203B) attached to the shoulder belt 201A (201B) or a buckle 217A (217B) integrally provided with the shoulder belt 201A (201B) or the thigh belt 203A (203B), and a worker's torso. A torso belt type safety band 3 including a torso belt 301 attached to the torso belt 301 and a connecting metal fitting 304A (304B) integrally provided with the torso belt 301 and detachably attached to the buckle 217A (217B). The connecting fitting 304A (304B) has a fitting piece 307A (307B) to be fitted into the buckle 217A (217B), and the buckle 217A (217B) communicates with an opening into which the fitting piece 307A (307B) is inserted. The space 220A (220B), 228A (228B) is provided, and the space 220A (220B), 228A (228B) has a buckle 217A (217B) when the buckle 217A (217B) is attached to the connecting metal fitting 304A (304B). ) Moves in a direction toward the worker or away from the worker according to the movement of the worker, and the fitting piece 307A (307B) exhibits a shape that spreads radially as the insertion direction.

Further, according to the present embodiment, the buckle freely moves in the direction toward the worker or in the direction away from the worker according to the movement of the worker, so that the harness type safety belt and the body are used according to the contents of the work at a high place. It is possible to quickly switch the mode in which the belt type safety belt is used as one or as a separate body.

Further, in the present embodiment, the connecting metal fitting 304A (304B) has an insertion hole 311A (311B) through which the body belt 301 is inserted with the fitting piece 307A (307B) facing the opening direction of the buckle 217A (217B). , 312A (312B).

Further, in the present embodiment, the body belt type safety belt 3 is a belt on which the body belts 301 are overlapped and attached, and includes an auxiliary belt 302 having annular metal fittings 303A, 303B, 303C through which the body belt 301 is inserted. When the body belt 301 is attached to the auxiliary belt 302, the connecting metal fitting 304A is arranged between the annular metal fittings 303A and 303C which are adjacent to each other among the plurality of annular metal fittings.

Further, in the present embodiment, the body belt 301 has a tool bag 316 mounted between adjacent annular metal fittings 303A and 303C, and the connecting metal fitting 304A is mounted on the body belt 301 so as to cover the tool bag 316. Will be done.

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

Further, in the present embodiment, the fitting piece 307A (307B) faces upward when the operator wears the body belt 301.

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 Buckle 216 Ring metal fittings 219A, 219B, 227A, 227B Holding members 220A, 220B, 228A, 228B Space 221A, 221B, 229A , 229B Release button 222A, 222B, 230A, 230B Elastic piece 223A, 223B, 231A, 231B Inclined surface 224A, 224B, 232A, 232B Mounting surface 225A, 225B, 233A, 233B Projection piece 226A, 226B, 234A 301 Body belt 302 Auxiliary belt 303A, 303C D ring 303B V-shaped square ring 304A, 304B Connecting bracket 305A, 305B, 305C Belt retainer 306A, 306B Bracket body 307A, 307B Fitting piece 308A, 309A, 308B, 309B First bent piece 310A, 311A, 310B, 311B Second bent piece 312A, 313A, 312B, 313B Insertion hole 316 Tool bag

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
The connecting fitting has a fitting piece to be fitted into the buckle.
The buckle has a space communicating with the opening into which the fitting piece is inserted.
The space is such that when the buckle is attached to the connecting metal fitting, the buckle moves in a direction toward the worker or a direction away from the worker according to the movement of the worker. A safety belt characterized by having a shape that expands radially toward the insertion direction. The safety belt according to claim 1, wherein the connecting metal fitting has an insertion hole through which the body belt is inserted in a state where the fitting piece faces the direction of the opening. The torso belt type safety belt is a belt to which the torso belts are overlapped and attached, and includes an auxiliary belt having a plurality of annular metal fittings through which the torso belt is inserted.
The first or second aspect of the present invention, wherein the connecting metal fitting is arranged between adjacent annular metal fittings among the plurality of annular metal fittings when the body belt is attached to the auxiliary belt. Safety belt. The body belt has a suspender mounted between the adjacent annular metal fittings.
The safety belt according to claim 3, wherein the connecting metal fitting is attached to the body belt so as to cover the hanging tool. The safety belt according to claim 4, wherein the hanging tool is a tool bag for accommodating the work tool. 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. The safety belt according to claim 6, wherein the fitting piece faces upward when the worker wears a torso belt.

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