JP5750333B2 - Connection structure of harness-type safety belt and body belt - Google Patents

Description

  The present application relates to a harness-type safety belt that is attached to the body of an operator at work in a high place to prevent a fall, and particularly relates to a structure in which a torso belt is connected to the harness-type safety belt.

At work sites, there are work done on the ground and work done at high places, but in the work done on the ground, the worker wears a torso belt (work belt) and attaches tools etc. necessary for the work. Pliers and waist bags are attached for carrying. In addition, when working at a high place, it is necessary to use a safety belt for preventing fall.
This fall-preventing safety belt is roughly divided into a belt-type safety belt and a harness-type safety belt.
At the time of fall prevention, the body belt type safety belt has a high possibility of damaging the body because the load concentrates on the torso, but the harness type safety belt composed of a shoulder belt and a thigh belt is loaded with the shoulder belt. Since it is dispersed on the thigh belt, the damage to the body can be reduced. For this reason, in recent years, the use of harness-type safety belts has increased.

When a worker working on the ground moves to a site at a high place, it is necessary to wear a harness-type safety belt on a torso belt to which equipment such as a pliers and a waist bag is attached. Conversely, when a worker working at a high altitude works on the ground, it is necessary to wear a torso belt with equipment such as a pliers and a waist bag on the harness-type safety belt.
In either case, the harness-type safety belt and the torso belt are separate and not connected to each other, so that the usability is poor.

  In Patent Document 1, in a harness-type safety belt in which a shoulder belt and a thigh belt are sewn using a connecting ring through which a torso belt can be inserted, the torso belt is passed through the torso belt insertion holes of the connecting rings disposed on both waists. In addition, a technique for enabling connection between a waist belt and a harness-type safety belt is disclosed. However, with this technique, it was not possible to attach the harness type safety belt unless the pliers and waist bags equipped on the waist belt were removed. In addition, the harness-type safety belt could not be attached with the waist belt attached.

Hereinafter, the connection method disclosed in Patent Document 1 will be specifically described.
Generally, the buckle of the body belt includes a pull-in type buckle and a connection type buckle including a socket body and a tongue plate.
When attaching a torso belt with a retractable buckle to a harness-type safety belt, the worker first removes the torso belt worn on the body. Then, in order to insert the belt of the torso belt into the connecting ring of the harness-type safety belt, remove the pliers, the waist bag, and other equipment, pass the tip of the belt through one of the connecting rings, and remove the removed equipment from the belt. It was necessary to prepare for it by attaching it to the other connecting ring and inserting it into the other connecting ring.

  Further, as shown in FIG. 10, when the torso belt 5 with the connecting buckle composed of the socket body 51 and the tongue plate 52 is attached to the harness type safety belt 3 composed of the shoulder belt 31 and the thigh belt 32, The worker removes the torso belt 5 attached to the body. Next, after the front end of the belt 50 of the body belt 5 is inserted into the belt insertion hole 522 of the length adjusting portion 521 of the tongue plate 52, it is folded back and fixed by the fastening plate 53. After removing the landing plate 53, the pliers 54, the waist bag 55, and other equipment are removed. Then, the belt 50 is inserted into one connecting ring 35, the removed equipment is attached to the belt 50, and the other connecting ring 35 is inserted to attach the belt 50 to the harness type safety belt 3. Then, the belt is inserted into the belt insertion hole 522 of the length adjusting portion 521 of the tongue plate 52, the belt length is adjusted so as to fit around the waist of the worker, and the extra length of the belt 50 is fixed by the fastening plate 53. . Thus, in the case of a connection type buckle, the preparation which requires much more labor than a pull-in type buckle is required.

Japanese Patent No. 3769551

  This application can connect a harness-type safety belt composed of a shoulder belt and a thigh belt while an operator is wearing a torso belt equipped with a pliers, waist bag, etc., or it is composed of a shoulder belt and a thigh belt It is an object of the present invention to disclose a connection structure capable of connecting a waist belt while wearing a harness-type safety belt.

  In order to achieve this object, the present application provides a harness-type safety belt in which a waist belt connecting body is attached to both waists where a shoulder belt and a thigh belt intersect, and a waist belt in which an engaging body is attached in two predetermined places. The harness-type safety belt and the waist belt are connected by inserting the engaging body into the body and bringing the contact portion of the body belt connecting body and the engaging portion of the engaging body into a superposed holding state.

The invention of the first embodiment is composed of the body belt coupling body 1 of FIG. 1 and the engagement body 2 of FIG.
The torso belt coupling body 1 is provided with four belt insertion holes 13a, 13b, 13c, and 13d having a substantially C-shaped upper part and a substantially inverted C-shaped lower part. A vertically long rectangular engagement hole 112 having a height and a width through which the belt 50 of the body belt 5 can be folded in the length direction is provided in the central portion of the body belt coupling body 1 and is vertically long so as to face the upper and lower portions. The rectangular engaging portion passage grooves 111 and 111 are cut out so as to be integrated with the engaging hole 112 to form the connecting hole 11. Abutting portions 14 are formed near both sides of the opposed engaging portion passage groove 111 to form the engaging portion passage groove.

  The engagement body 2 is provided with two trunk belt insertion grooves 21 which are long enough to be inserted into the belt 50 of the trunk belt 5 in parallel to both sides and open to the outside by a predetermined length. Structure. Belt locking pieces 22 and 22 are formed on the upper and lower portions of the two waist belt insertion grooves 21 where the predetermined lengths are opened, respectively, and the engagement portions 23 and 22 are formed on the upper and lower portions of the waist belt insertion groove 21, respectively. 23 is formed.

The harness-type safety belt 411 shown in FIG. 5 has the shoulder belt 41 and the thigh belt 42 in the four belt insertion holes (13a to 13d) of the torso belt coupling body 1 at both waists where the shoulder belt 41 and the thigh belt 42 intersect. The harness belt 40 to be configured is inserted and arranged in a substantially X shape.
The belt 50 of the body belt 5 shown in FIGS. 6A and 6B bends the belt 50 from between the upper and lower belt locking pieces 22, 22 opened in the body belt insertion groove 21 of the engagement body 2. The engagement body 2 is attached to a predetermined position by inserting the belt 50 and sandwiching the belt 50 between the two waist belt insertion grooves 21 and 21.

  The engagement body 2 attached to the belt 50 of the body belt 5 is inserted in the thickness direction between the engagement portion passage grooves 111 and 111 of the body belt connection body 1 attached to the harness type safety belt 411, and the body belt connection body 1. Since the contact portion 14 and the engagement portion 23 of the engagement body 2 are brought into surface contact and are in close contact with each other, the engagement body 2 does not come out of the waist belt coupling body 1, so the waist belt 5 and the harness type safety belts 411, 412 (See FIG. 11) can be linked.

The invention of the second embodiment comprises the body belt coupling body 7 of FIG. 3 and the engagement body 8 of FIGS. 4 (a) and 4 (b).
The body belt coupling body 7 is provided with four belt insertion holes 13a, 13b, 13c, and 13d having the same shape as that of the first embodiment in the upper and lower portions. A circular engagement hole 712 is provided in the center portion, and horizontal rectangular engagement portion passage grooves 711 and 711 protruding at both end portions on the center line of the engagement hole 712 are integrated with the engagement hole 712. The connection hole 71 is formed. A contact portion 73 is formed on the outer peripheral edge of the connection hole 71.
The structure of the portion of the body belt 5 of the engaging body 8 to be attached to the belt 50 is the same as in the first embodiment, and is a longitudinally long length that allows the belt 50 to be inserted in parallel with both sides, and is open to a predetermined length toward each other. Engagement portions 83 provided with belt insertion grooves 21, 21 projecting in opposite directions of length and width that can be inserted into the engagement portion passage grooves 711 on the surface between the two waist belt insertion grooves 21, 21. 83 are attached with a separation of the thickness of the torso belt connector 7. The engaging portion 83 has a shape that can be inserted into the coupling hole 71, and is attached so that a line connecting the centers of the engaging portions 83 and 83 is parallel to the trunk belt insertion groove 21.

The torso belt coupling body 7 and the engaging body 8 of the second embodiment are the same as in the first embodiment, and the torso belt coupling body 7 has harness-type safety bands 421 and 422 (the harness-type safety bands 421 and 422 are not shown). ), The engaging body 8 is attached to the waist belt 5.
The engagement portion 83 is twisted by 90 ° so that the engagement portion passage grooves 711, 711 of the trunk belt coupling body 7 and the engagement portions 83, 83 of the engagement body 8 coincide with each other, and is inserted into the engagement portion passage groove 711. . Then, the twisting body is returned in the opposite direction, and the contact portion 73 of the body belt coupling body 7 and the engagement portion 83 of the engagement body 8 are brought into surface contact and are in close contact with each other, so that the engagement body 8 comes out of the body belt coupling body 7. Therefore, the harness-type safety belts 421 and 422 can be attached to the waist belt 5.

  Thus, the worker attaches the engaging body to a predetermined position while wearing the torso belt, and inserts the engaging body into the torso belt coupling body of the harness type safety belt, so that the harness type safety belt or The body belt can be connected to the harness-type safety belt.

The front view of the trunk belt coupling body 1 of Example 1. FIG. The front view of the engaging body 2 of Example 1. FIG. The front view of the trunk belt coupling body 7 of Example 2. FIG. Front view and side view of engagement body 8 of embodiment 2 Front view of the harness-type safety belt 411 to which the torso belt connector 1 is attached The top view and front view of the state which has arrange | positioned the engaging body 2 to the trunk | drum belt 5 Explanatory drawing of the state which has attached the engaging body 2 to the trunk belt coupling body 1 The front view of the superposition | polymerization holding state of the trunk belt coupling body 1 and the engagement body 2 Front view of a state in which the body belt 5 is attached to the harness-type safety belt 411 by the body belt coupling body 1 and the engagement body 2 Explanatory drawing of a state in which the body belt 5 is attached to the conventional harness-type safety belt 3 Front view of the harness-type safety belt 412 to which the body belt connector 1 is attached when the body belt 5 is connected with the harness-type safety belt 412 previously attached. Explanatory drawing of the state which has inserted the engagement body 8 in the trunk | drum belt coupling body 7 of Example 2. FIG. Front view and side view of engagement body 92 Front view of torso belt connector 91

The superposition of the body belt coupling body 1 and the engagement body 2 in the first embodiment, the superposition of the body belt coupling body 7 and the engagement body 8 in the second embodiment. There are two types: attaching the harness-type safety belt and attaching the body belt with the harness-type safety belt attached.
In this Example 1, Example 1-1 is a case where a worker attaches a harness-type safety belt in a state where the waist belt is first attached, and Example 1-2 is a state in which the harness-type safety belt is first attached. In this case, the body belt is attached. Example 1 will be described below.

Although the structure of the torso belt coupling body 1 in FIG. 1 and the engagement body 2 in FIG. 2 has been described in (Means for Solving the Problems), it will be described in more detail.
The body belt coupling body 1 shown in FIG. 1 has belt insertion holes 13a and 13b each having a substantially C-shaped elongated hole at the upper part and elongated holes facing the belt insertion holes 13c and 13d having a substantially inverted C-shaped lower part at the lower part. It arrange | positions so that it may become parallel (13a and 13c and 13b and 13d are parallel). An engagement hole 112 having a height and a width through which the belt 50 of the body belt 5 can pass is provided at the center of the body belt coupling body 1, and the engagement body 2 can be inserted in the thickness direction above and below the engagement hole 112. The rectangular engaging portion passage grooves 111 and 111 having such a height and width are cut out so as to be integrated with the engaging hole 112 to form the connecting hole 11. Abutting portions 14 are formed on the upper and lower portions of the engaging hole 112 in the vicinity of both sides of the engaging portion passage grooves 111, 111 opposed to the connecting hole 11.

Here, although not shown in the figure, the vertical center line of the engaging portion passage grooves 111, 111 that are notched so as to be integrated with the engaging hole 112 and the vertical center of the engaging hole 112. Even if the lines do not match, there is no functional problem.
Further, the torso belt coupling body 91 in FIG. 14 is formed by notching the middle part of the long hole-shaped belt insertion holes (13a to 13d) arranged in the torso belt coupling body 1 of the first embodiment to the outside so that the belt is inserted. A groove 16 is formed. Since the harness belt 40 can be inserted into the trunk belt coupling body 91 from the cutout portion, the trunk belt coupling body 91 can be attached after sewing, instead of incorporating the trunk belt coupling body 91 at the time of sewing.

The engagement body 2 shown in FIG. 2 has a structure in which two body belt insertion grooves 21 and 21 are provided in parallel with both sides so that the body belt 5 can be inserted into the body belt 5 and opened to a predetermined length toward each other. It is. Belt locking pieces 22, 22 are formed on the upper and lower portions of the outer portions of the two body belt insertion grooves 21, 21 that are open for a predetermined length. As for the open length of the outer portion, it is necessary to bend the belt 50 in the width direction and insert it so that it does not come out after insertion. Become.
The upper and lower portions of the trunk belt insertion groove 21 are in contact with the abutting portion 14 of the trunk belt coupling body 1, and there are engaging portions 23 for maintaining the superposed state of the trunk belt coupling body 1 and the engaging body 2. Is formed.

<Example 1-1>
Example 1-1 is a connection method in which the harness-type safety belt 411 is attached in a state where the operator first wears the waist belt 5.
FIG. 5 is a front view of the harness-type safety belt 411 to which the trunk belt connector 1 is attached. A pair of predetermined length belts are crossed at the back, one end of the harness belt 40 located in front of the chest across the shoulder is inserted from the inner surface of the belt insertion hole 13a to the outer surface, and inserted from the outer surface of 13c to the inner surface, The other end extending from the back portion is inserted from the inner surface of the belt insertion hole 13b to the outer surface, and is inserted from the outer surface of 13d to the inner surface. The thigh fixing belt 45 is attached to the harness-type safety belt 411.
The left and right harness belts 40 are substantially X-shaped on the outer surface of the torso belt connector 1, and the opening of the connecting hole 11 is located on the inner surface (human body side). That is, the connecting hole 11 is open to the side of the torso belt 5 worn by the worker.

FIGS. 6A and 6B are a plan view and a front view in which the engagement body 2 is disposed on the belt 50 of the body belt 5. An operator puts the engaging body 2 between the belt 50 of the torso belt 5 and the human body at a predetermined position while wearing the torso belt 5, bends the belt 50 in the width direction, and one opposing belt locking piece 22, The belt 22 is inserted into the body belt insertion groove 21 from between 22 and returned to its original state by the elasticity of the belt 50. The belt 50 is inserted into the other waist belt insertion groove 21 in the same manner, and the belt 50 is sandwiched between the belt locking pieces 22 and 22 on both sides and the body belt insertion groove 21, whereby the engaging body 2 is moved to the belt. It can be attached in 50 predetermined positions. At this time, the belt locking piece 22 is positioned outside the human body.
In this way, the engagement body 2 can be attached by being sandwiched between the belt locking pieces 22 and 22 that are paired up and down without being inserted from the front end of the belt 50 of the body belt 5. It is not necessary to remove the equipment such as the waist bag 55 and the pliers 54.

FIG. 7 is an explanatory view of the fitting state of the engagement body 2 disposed on the belt 50 of the body belt 5 and the body belt coupling body 1 disposed on the harness-type safety belt 411.
First, the engaging body 2 disposed on the belt 50 of the torso belt 5 worn by the worker is brought upright with respect to the belt 50 (FIG. 7A), and the inner surface of the torso belt connector 1 (the human body side). ) Through the connecting hole 11 (FIG. 7B), the engaging body 2 is positioned between the waist belt connecting body 1 and the harness belt 40 (FIG. 7C).
Since the torso belt 5 is attached to the human body, the tension P in the longitudinal direction of the belt 50 acts on the engaging body 2 so that the engaging body 2 is in close contact with the torso belt connector 1 (FIG. 7 (d)). . A front view of this polymerization holding state is shown in FIG. As described above, since the four surfaces of the engaging portion 23 of the engaging body 2 and the abutting portion 14 of the trunk belt coupling body 1 are in strong contact with each other, the engaging body 2 is not detached from the trunk belt coupling body 1.
FIG. 9 shows the body belt 5 and the harness-type safety belt 411 connected in this manner.

When the material of the body belt connector 1 and the engagement body 2 is a resin material, a soft material is applied with a slight load on the harness-type safety belt 411, and the contact portion 14 of the body belt connection body 1 or the engagement body 2 It is considered that the engaging portion 23 is deformed and cannot be superposed on each other, and the engaging body 2 may come off the torso belt coupling body 1. Therefore, a hard material having a certain degree of strength is required.
Moreover, in order to ensure intensity | strength, it is also considered using a metal material instead of a resin material. At that time, it is necessary to chamfer the contact surface so as not to damage the belt.

<Example 1-2>
Example 1-2 is a connection method in which the trunk belt 5 is attached in a state where the harness-type safety belt 412 is first attached.
FIG. 11 is a front view of the harness-type safety belt 412 to which the trunk belt connector 1 is attached. A pair of predetermined length belts are crossed at the back, one end of the harness belt 40 located in front of the chest across the shoulder is inserted from the outer surface of the belt insertion hole 13a to the inner surface, and is inserted from the inner surface of 13c to the outer surface. The other end extending from the belt insertion hole 13b is inserted into the inner surface from the outer surface of the belt insertion hole 13b and from the inner surface of 13d to the outer surface, and the shoulder belt 41 and the thigh belt 42 are formed by the torso belt coupling body 1, respectively. A thigh fixing belt 45 is attached to the thigh belt 42.
The left and right harness belts 40 are substantially X-shaped on the inner surface of the trunk belt coupling body 1, and the opening of the coupling hole 11 is located on the outer surface.
The engaging body 2 is attached in the same manner as in Example 1-1, but the belt locking piece 22 at this time is attached so as to be positioned on the human body surface (inner surface).

  In Example 1-1, since the torso belt 5 was previously attached, the engaging body 2 attached to the belt 50 of the torso belt 5 was inserted from the human body side of the harness-type safety belt 411 toward the outside. In Example 1-2, since the harness-type safety belt 412 is first mounted, the engaging body 2 is inserted into the human body from the outside.

In this case, the method is the same as that of Example 1-1 except that the insertion direction is different. That is, the engaging body 2 attached to the belt 50 of the trunk belt 5 is made upright with respect to the belt 50, the engaging body 2 is inserted into the connecting hole 11 from the outside of the trunk belt connecting body 1, and the engaging body 2 is connected to the torso belt. It is located between the connector 1 and the harness belt 40 held in a substantially X shape.
When the torso belt 5 is attached to the human body, the tension in the length direction of the belt 50 of the torso belt 5 acts on the engaging body 2, and the engaging portion 23 of the engaging body 2 is connected to the torso belt as in the case of Example 1-1. Since the four surfaces of the contact portion 14 of the body 1 are in strong contact with each other, the engagement body 2 does not come off the torso belt coupling body 1.

  In the present embodiment, the worker wears the other harness-type safety belt 411 (412) or the waist belt 5 while wearing the waist belt 5 or the harness-type safety belt 411 (412), and the waist belt 5 and the harness. A method of integrating the mold safety belt 411 (412) has been described. However, it is often considered that the worker removes the torso belt 5 or the harness-type safety belt 411 (412) from the human body and combines them on the work desk or the like. Even in such a combination, it is not necessary to remove equipment such as the pliers 54 and the waist bag 55 attached to the waist belt 5.

Example 2 will be described below.
The structures of the body belt coupling body 7 in FIG. 3 and the engagement body 8 in FIG. 4 have been described in (Means for Solving the Problems), but will be described in detail again.
As in the first embodiment, the torso belt coupling body 7 shown in FIG. 3 has belt insertion holes 13a and 13b each having an elongated hole shape in the upper part, and a belt insertion hole having an elongated hole shape in the substantially inverted C shape in the lower part. 13c and 13d are arranged so that 13a and 13c and 13b and 13d are parallel to each other.
Unlike the shape of the first embodiment, the connection hole 71 of the body belt connection body 7 has a circular engagement hole 712 at the center of the body belt connection body 7 and both end portions on a horizontal line passing through the center of the engagement hole 712. The rectangular engaging portion passage grooves 711 and 711 are cut out so as to be integrated. A contact portion 73 is formed on the outer peripheral edge of the engagement hole 712.

As in the first embodiment, the engaging body 8 shown in FIG. 4 has two trunk belt insertion grooves that are long enough to be inserted into the belt 5 in parallel to both sides and open to the outside by a predetermined length. 21 and 21 are provided. Belt locking pieces 22, 22 are formed on the upper and lower portions of the outer portions of the two body belt insertion grooves 21, 21 that are open for a predetermined length. As for the open length of the outer side portion, it is necessary to bend the belt 50 in the width direction and insert it so that it does not come out after the insertion, so the length is about 1/2 to 2/3 of the width of the belt 50. Is required.
The engaging portion 83 of the engaging body 8 is sized so that it can be inserted into the connecting hole 71 of the torso belt connecting body 7 and twisted on the surface between the two torso belt insertion grooves 21 and 21 and twisted. A spacer 82 having a height separated from the thickness of the belt coupling body 7 is provided, and an engagement portion having a length and a width that can be inserted into the engagement portion passage grooves 711 and 711 of the body belt coupling body 7 on the spacer 82. 83 and 83 are attached protruding from both sides.

  In this embodiment, the engagement hole 712 of the body belt coupling body 7 shown in FIG. 3 is circular, but it may be a polygon having a size that allows the spacer 82 of the engagement body 8 to be inserted and twisted.

  Further, the engaging portion 83 of the engaging body 8 shown in FIG. 4 is fixedly provided on the surface between the two waist belt insertion grooves 21 and 21. Although not shown in the figure, the engaging portion 83 can be rotated, and after the engaging portion 83 is inserted into the connecting hole 71 of the waist belt connecting body 7, the engaging portion 83 is connected to the waist belt connecting body 7 by the action of a spring. Returning to the contact portion 73, the engaging portion 83 may have a structure capable of maintaining the polymerization at a position that intersects the contact portion 73 of the body belt connector 7 by 90 °.

  Further, as shown in FIGS. 13 (a) and 13 (b), in the space between the waist belt insertion holes 21, 21, the thickness of the waist belt coupling body 7 is secured and bent in the opposite vertical directions ( 13 (b)), a structure may be provided in which engaging portions 923 and 923 of a size that can be inserted into the connecting hole 71 of the waist belt connecting body 7 are provided.

<Example 2-1>
Example 2-1 is a connection method in which the harness-type safety belt 421 is attached in a state in which the operator first wears the waist belt 5 as in the case of Example 1-1.
Although the harness-type safety belt 421 is not shown in the figure, the torso belt coupling body 7 inserts the harness belt 40 into the belt insertion holes 13a, 13b, 13c, and 13d in the same manner as in Example 1-1. A shoulder belt 41 and a thigh belt 42 are formed by the belt coupling body 7, and a thigh fixing belt 45 is attached to the thigh belt 42 to form a harness-type safety belt 421. The left and right harness belts 40 are substantially X-shaped on the outer surface of the torso belt coupling body 7, and the opening of the coupling hole 71 is located on the inner surface (human body side).

  The engaging body 8 is bent at a predetermined position of the belt 50 of the waist belt 5 from the outside of the belt 50 (opposite to the human body surface) in the width direction, and between the opposing belt locking pieces 22 and 22. From the belt belt insertion groove 21 and returned to its original state by the elasticity of the belt 50. The belt 50 is inserted into the other waist belt insertion groove 21 in the same manner, and the belt 50 is sandwiched between the belt locking pieces 22 and 22 and the waist belt insertion grooves 21 and 21 on both sides, whereby the engagement body 8 is inserted. Can be attached to a predetermined position of the belt 50. At this time, the engaging portion 83 of the engaging body 8 and the opening of the connecting hole 71 of the harness-type safety belt 421 to be connected are facing each other.

FIG. 12 is an explanatory view of a state in which the engagement body 8 disposed on the belt 50 of the body belt 5 and the body belt coupling body 7 disposed on the harness-type safety belt 421 are fitted.
First, the body belt coupling body 7 or the engagement body 8 is resistant to the elasticity of the body belt 5 or the harness belt 40 so that the engaging portion 83 of the body 8 can be inserted into the coupling hole 71 of the body belt coupling body 7. Then, twist and match the two (FIG. 12A). The engaging portion 83 is inserted through the connecting hole 71 (FIG. 12B). The twist of the torso belt coupling body 7 or the engaging body 8 is returned so that the engaging portion 83 of the engaging body 8 and the abutting portion 73 of the torso belt coupling body 7 abut (FIG. 12 (c)). Since the abutting portion 73 of the torso belt coupling body 7 and the engaging portion 83 of the engaging body 8 abut on each other, the overlapping holding state is maintained, so that the harness-type safety belt 421 and the torso belt 5 can be coupled. In this superposition holding state, the center lines of the engaging portion passage grooves 711 and 711 of the body belt coupling body 7 and the center lines of the engaging portions 83 and 83 of the engaging body 8 intersect at a right angle (90 °).

<Example 2-2>
Example 2-2 is a connection method in which the operator attaches the waist belt 5 with the harness-type safety belt 422 previously attached, as in Example 1-2.
Although the harness-type safety belt 422 is not shown, the torso belt coupling body 7 is inserted in the harness belt 40 through the belt insertion holes 13a, 13b, 13c, and 13d in the same manner as in Example 1-2. A shoulder belt 41 and a thigh belt 42 are formed by the belt coupling body 7, and a thigh fixing belt 45 is attached to the thigh belt 42 to form a harness-type safety belt 422. The left and right harness belts 40 are substantially X-shaped on the inner surface (human body side) of the torso belt coupling body 7, and the opening of the coupling hole 71 is located on the outer surface. In other words, the connecting hole 71 of the torso belt connecting body 7 is open to the torso belt 5 to be mounted from now.

  The engagement body 8 is a predetermined position of the belt 50 of the body belt 5, the belt 50 is bent in the width direction from the inner surface (human body surface) of the belt 50, and the body belt insertion groove is formed between one of the opposed belt locking pieces 22. 21 and is restored to its original state by the elasticity of the belt 50. The belt 50 is inserted into the other waist belt insertion groove 21 by the same method, and the belt 50 is sandwiched between the belt locking pieces 22, 22 on both sides and the body belt insertion grooves 21, 21. Can be attached to a predetermined position of the belt 50. At this time, the opening of the connecting hole 71 of the harness-type safety belt 422 and the engaging portion 83 of the engaging body 8 attached to the body belt 5 to be connected are facing each other.

  The body belt coupling body 7 and the engagement body 8 of Example 2-2 are brought into contact with the body belt coupling body 7 by the method of FIGS. 12A, 12B, and 12C, as in Example 2-1. Since the overlapping holding state of both is maintained by the contact between the portion 73 and the engaging portion 83 of the engaging body 8, the harness-type safety belt 422 and the waist belt 5 can be connected.

Although the engagement part passage grooves 711 and 711 of the body belt coupling body 7 shown in FIG. 3 are provided at two positions on the center line passing through the center of the engagement hole 712, the center of the engagement hole is the center point. Alternatively, a structure may be provided in which the outer peripheral edge of the engagement hole is divided into three equal parts, or a structure provided in four divided parts.
When there are two engagement portion passage grooves, the angle of the line connecting the center of the engagement hole and the center of each engagement portion passage groove is 180 °, 120 ° for three locations, and 90 ° for four locations. It becomes. At this time, since the engaging portion of the engaging body is inserted into the connecting hole of the torso belt connecting body, the number and shape of the engaging portions of the engaging body correspond to the number and shape of the engaging portion passing grooves of the torso belt connecting body. To do.

  When there are two engagement portion passage grooves, the angle between the lines connecting the centers of the engagement holes and the centers of the two engagement portion passage grooves is 180 °. Then, the angle formed by the line connecting the centers of the two engaging portion passage grooves of the body belt coupling body and the centers of the two engaging portions of the engaging body is 90 °, which is the middle of 180 °. The engaging body is at a position where it is most difficult to come off from the body belt coupling body. (See FIG. 12 (c))

  When there are three engagement part passage grooves, the angle of the line connecting the center of the engagement hole and the center of each engagement part passage groove is 120 °. The angle formed by the line connecting the centers of the engaging part passage grooves and the line connecting the center of the engaging body and the centers of the three engaging parts of the engaging body is 60 ° in the middle of 120 °, The engaging body is at a position where it is most difficult to disengage from the body belt coupling body.

  Similarly, when there are four engagement portion passage grooves, the angle of the line connecting the center of the engagement hole and the center of each engagement portion passage groove is 90 °. The angle formed by the line connecting the centers of the four engagement portion passage grooves and the center of the engagement body and the centers of the four engagement portions of the engagement body is 45 °, which is an intermediate of 90 °, The engaging body is at a position where it is most difficult to disengage from the body belt coupling body.

  That is, the angle formed by the line connecting the center of the engagement hole of the body belt coupling body and the center of each engagement portion passage groove and the line connecting the center of the engagement body and the center of each engagement portion is When the number of passage grooves is two, it is 90 °, three is 60 °, and four is 45 °. For this reason, since the number of polymerization points increases as the number of engaging portion passage grooves increases, an effect of obtaining a more stable state can be expected.

  According to the present invention, the engaging portion of the engaging body attached to the torso belt is inserted into the connecting hole of the torso belt connecting body attached to the harness, and the abutment portion of the torso belt connecting body and the engaging portion of the engaging body are abdominal pressure. By contacting the body belt, the body belt coupling body and the engagement body can be maintained in a superposed state, and the harness type safety belt and the body belt can be coupled to each other.

DESCRIPTION OF SYMBOLS 1 Body belt coupling body 11 Connection hole 111 Engagement part passage groove 112 Engagement hole 13a-13d Belt insertion hole 14 Contact part 2 Engagement body 21 Body belt insertion groove 22 Belt locking piece 23 Engagement part 3 Conventional harness type Safety belt 31 Shoulder belt 32 Thigh belt 35 Connecting ring 411 Harness type safety belt 412 of Example 1-1 Harness type safety belt 421 of Example 1-2 Harness type safety belt 422 of Example 2-1 Example 2-2 Harness-type safety belt 40 harness belt 41 shoulder belt 42 thigh belt 45 thigh fixing belt 5 torso belt 50 belt 51 socket body 52 tongue plate 521 length adjusting part 522 belt insertion hole 53 fastening plate 54 pliers insertion 55 waist bag 7 torso Belt connection body 71 Connection hole 711 Engagement part passage groove 712 Engagement hole 73 Contact part 8 Engagement body 82 Spare 83 the engagement portion 9 engager 923 engages portion

Claims (3)

In a structure in which a torso belt is coupled to a harness-type safety belt that crosses a pair of continuous harness belts at the back and forms a thigh belt by a shoulder belt and each end,
A belt insertion hole through which a pair of harness belts pass is provided in the upper part and the lower part. Place it at the harness belt crossing position,
Two body belt insertion grooves that are vertically long parallel to both sides and open to the outside by a predetermined length are provided to form an engagement body having an engagement portion, and the body belt is inserted into the two body belt insertion grooves. Fix it and place it in two predetermined places on the waist belt,
The engagement portion of the engagement body is inserted into the body belt coupling body arranged in the harness-type safety belt, and the contact portion of the body belt coupling body and the engagement portion of the engagement body are brought into contact with each other, thereby superimposing both of them. A harness-type safety belt and torso belt connection structure characterized in that the harness-type safety belt and the torso belt are connected by maintaining the holding state. The connecting hole of the body belt connecting body is provided with a vertically long rectangular engaging hole at the center of the body belt connecting body, and an engaging part passage groove protruding and notched above and below the engaging hole, Abutting portions are formed on both sides of the engaging portion passage groove,
The engaging body has a height and thickness that can be inserted between the engaging part passage grooves, and an engaging part is formed on the upper and lower portions of the two waist belt insertion grooves of the engaging body,
The engagement body arranged in the trunk belt is inserted in an orthogonal state between the engagement portion passage grooves of the trunk belt connection body arranged in the harness type safety belt, and after the insertion, the orthogonal state is released, The harness-type safety belt and the torso belt are connected to each other by maintaining the overlapped holding state of the abutment portion and the engagement portion of the engagement body. Connection structure of the harness-type safety belt and the waist belt as described. The connecting hole of the body belt connecting body passes through a circular or polygonal engaging hole at the center part of the body belt connecting body, and passes through an engaging part which protrudes at both ends on the center line of the engaging hole and is opposed to each other. A groove is provided, and a contact portion is formed between the engagement portion passage grooves on the outer peripheral edge of the connection hole,
The engagement body has a shape in which an engagement portion protruding in a direction opposite to the length and width that can be inserted into the engagement portion passage groove between the waist belt insertion grooves can be inserted into the connection hole. A thickness separation of the body belt coupling body is provided from the surface,
The engagement part of the engagement body arranged on the waist belt is inserted between the engagement part passage grooves of the body belt coupling body arranged in the harness-type safety belt, and after the insertion, the engagement part is rotated, The harness-type safety belt and the torso belt are connected by maintaining the overlapped holding state of the contact portion of the belt connecting body and the engaging portion of the engaging body by contacting each other. Item 6. A harness-type safety belt according to Item 1, and a connecting structure of a waist belt.

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