JP2009148352A - Belt connector and harness type safety belt using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a harness type safety belt with excellent mobility when an operator performs a stretching motion, a body side bending motion, and a forward bending and/or backward bending motion. <P>SOLUTION: Shoulder belts 2a and 2b of an upper half body restricting belt part and crotch belts 11a and 11b of a lower half body restricting belt part are connected through a connection part 20, and the connection part 20 is provided with an upper half body side connecting member 21 fixed to the upper half body restricting belt part 1 and a lower half body side connecting member 22 fixed to the lower half body restricting belt part 10. The upper half body side connecting member 21 and the lower half body side connecting member 22 are provided so as to be freely rotated by a connecting rod 23 and freely moved in a direction of separating from each other and a direction of getting close while maintaining a connected state by the connecting rod 23, and the upper half body side connecting member 21 and the lower half body side connecting member 22 are energized by a compression coil spring 25 in the direction of getting close to each other. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a belt connector for connecting a first belt body and a second belt body, and a harness-type safety belt using the same.

  In a harness-type safety belt, a rucksack, a parachute, a belt, and the like, a belt structure is generally configured by connecting a first belt body and a second belt body. A harness-type safety belt having such a configuration is disclosed in Patent Document 1.

  As shown in FIG. 12, the harness-type safety belt 100 includes an upper body restraining belt portion 110 that is hung on the upper body of the worker and a lower body restraining belt portion 120 that is hung on the lower body of the worker.

  The upper body restraint belt portion 110 is composed of a pair of left and right shoulder belts 111 crossing each other at the back and a chest belt 112 connecting the pair of left and right shoulder belts 111 at the chest position.

  The lower body restraint belt portion 120 includes a pair of left and right crotch belts 121 and a buttocks contact belt 122 that connects the pair of left and right crotch belts 121 at the buttocks position. A mesh-like back rest 130 is provided in the space of the back surrounded by the pair of left and right shoulder belts 111, the pair of left and right crotch belts 121, and the buttocks rest belt 122.

  The lower ends of the left and right shoulder belts 111 and the upper ends of the left and right crotch belts 121 are connected via a belt connecting portion 140. The belt connecting portion 140 is configured by sewing the belts at the crossing positions of both the shoulder belts 111 and the crotch belts 121.

In this conventional harness-type safety belt 100, as shown in FIG. 13, the upper and lower bodies of the worker are restrained together, so that the impact at the time of dropping can be distributed to the upper and lower bodies, and the impact at the time of dropping is reduced. It can be effectively reduced.
JP 2004-321562 A

  However, in the above-described conventional belt connecting portion 140, the upper and lower bodies of the worker are constrained integrally, so that the restraint between the first belt body and the second belt body is too strong, and the degree of freedom of movement is low. There was a problem. When applied to the harness-type safety belt 100 as in the conventional example, when an operator stretches the body, bends the body sideways, bends the body forward, or bends the body, There is a sense of restraint, and mobility is bad.

  Here, it can be considered that the belt coupling portion is a belt coupling tool 150 shown in FIG. The belt connector 150 includes an upper body side connecting member 151 fixed to the lower end of the shoulder belt 111, a lower body side connecting member 152 fixed to the upper end of the crotch belt 121, an upper body side connecting member 151, and a lower body side connecting member 152. And a connecting rod 153 that rotatably supports the. According to this belt connector 150, when the worker bends forward or backward, the upper body side connecting member 151 and the lower body side connecting member 152 are rotated following the body. Can improve the mobility of exercise and backbend exercise.

  However, in the belt connector 150 described above, the side circumferential surfaces of both the upper body side connecting member 151 and the lower body side connecting member 152 intersect, and the upper body side connecting member 151 and the lower body side connecting member 152 intersect as the rotation angle increases. The angle becomes smaller. Specifically, as shown in FIG. 15 (a), when the rotation angle is 0 degree, the intersection angle is 100 degrees, but as shown in FIG. 15 (b), when the rotation angle is 15 degrees. When the crossing angle is 85 degrees and the rotation angle is 30 degrees as shown in FIG. 15C, the crossing angle is 70 degrees. Therefore, there is a possibility that the operator's finger or the like may be pinched between the side peripheral surfaces of the upper body side connecting member 151 and the lower body side connecting member 152.

  Accordingly, an object of the present invention is to provide a belt connector having a high degree of freedom of movement and a harness-type safety belt using the same.

  Another object of the present invention is to provide a belt connector that has a high degree of freedom of movement and that can prevent as much as possible a problem that an operator may pinch a finger or the like at a connection point, and a harness-type safety belt using the belt connector. To do.

  The invention of claim 1 that achieves the above object is a belt connector for connecting the first belt body and the second belt body, the first belt side connecting member fixed to the first belt body, A second belt-side connecting member fixed to the second belt body, and the first belt-side connecting member and the second belt-side connecting member are rotatable and spaced apart from each other while maintaining a connected state. The first belt side connecting member and the second belt side connecting member are biased by a biasing means in a direction approaching each other. It is a belt coupler.

  The invention according to claim 2 is the belt connector according to claim 1, wherein the first belt side connecting member and the second belt side connecting member are provided with a long hole in one of the connecting members, and the other The connecting member is provided with a rod supporting hole, and the connecting rod is inserted into the elongated hole and the rod supporting hole, whereby the first belt side connecting member and the second belt side connecting member maintain a connected state. While being provided movably, a rod restricting member that moves in the elongated hole and receives the urging force of the urging means is provided, and the rod restricting member presses the connecting rod, The belt connector according to claim 1, wherein the first belt side connecting member and the second belt side connecting member are urged in a direction approaching each other.

  Invention of Claim 3 is a belt coupling tool of Claim 1 or Claim 2, Comprising: The crossing angle which the side peripheral surfaces of both the said 1st belt side connection member and the said 2nd belt side connection member cross | intersect Is a belt coupler provided such that the rotation angle between the first belt side coupling member and the second belt side coupling member is 140 degrees or more at any rotation angle.

  Invention of Claim 4 is the belt coupling tool of Claim 1 or Claim 2, Comprising: The front end side of the side peripheral surface of both the said 1st belt side connection member and the said 2nd belt side connection member is, In a region where the rotation angle is small, the rotation angle does not intersect with each other, but the rotation angle increases and intersects. At this intersecting rotation position, the side circumferential surfaces of both the first belt side coupling member and the second belt side coupling member The belt connector is characterized in that a clamping object escape space is formed on the inner peripheral side of the intersection.

  The invention according to claim 5 is a harness-type safety belt for connecting the upper body restraint belt portion and the lower body restraint belt portion by a belt connector, and the belt connector is connected to the upper body side fixed to the upper body restraint belt portion. A member and a lower body side connecting member fixed to the lower body restraining belt portion, the upper body side connecting member and the lower body side connecting member being rotatable and being separated from each other while maintaining a connected state; A harness-type safety belt which is provided so as to be movable in a direction close to the upper body side and wherein the upper body side connecting member and the lower body side connecting member are biased by biasing means in a direction approaching each other. .

  The invention according to claim 6 is the harness-type safety belt according to claim 5, wherein the upper body side connecting member and the lower body side connecting member are provided with a long hole in one of the connecting members, and the other connecting member. A rod support hole is provided, and a connecting rod is inserted into the elongated hole and the rod support hole, so that the upper body side connecting member and the lower body side connecting member are provided movably while maintaining a connected state. And a rod restricting member that moves in the elongated hole and receives the urging force of the urging means is provided, and the rod restricting member presses the connecting rod, whereby the upper body side connecting member and the A harness-type safety belt, wherein the lower body side connecting members are urged in directions close to each other.

  The invention according to claim 7 is the harness-type safety belt according to claim 5 or claim 6, wherein the crossing angle at which the side peripheral surfaces of both the upper body side connecting member and the lower body side connecting member intersect is A harness-type safety belt provided so that a rotation angle between an upper body side connecting member and the lower body side connecting member is 140 degrees or more at any rotation angle.

  The invention according to claim 8 is the harness-type safety belt according to claim 5 or claim 6, wherein the front end side of both the upper body side connecting member and the lower body side connecting member has a rotation angle. In a small area, they do not cross each other but intersect with a larger rotation angle. At this intersecting rotational position, the inner circumference side of the intersections of the side circumferential surfaces of both the upper body side connecting member and the lower body side connecting member This is a harness-type safety belt characterized in that a clamped material escape space is formed in the safety band.

  According to the first aspect of the present invention, the position where the first belt side connecting member and the second belt side connecting member are close to each other by the biasing force of the biasing means, that is, the belt connector is in the contracted state, and the first belt body And the second belt body are restrained with an appropriate restraining force. An external force in a direction of separating the first belt body and the second belt body from each other acts on the belt connector. Then, the first belt-side connecting member and the second belt-side connecting member of the belt connector are moved away from each other against the biasing force of the biasing means, and the belt connector is in an extended state. Further, when an external force in a direction that changes the angle between the first belt body and the second belt body acts, the first belt side coupling member and the second belt side coupling member of the belt coupling device rotate. As described above, a belt connector having a high degree of freedom of movement can be provided.

  According to the invention of claim 2, the belt connector only needs to add the rod regulating member and the urging means in addition to the first belt side connecting member, the second belt side connecting member, and the connecting rod for connecting them. Because it is good, it can be configured simply. With a simple configuration, it is possible to reduce the cost and weight as much as possible.

  According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, the crossing angle of both side peripheral surfaces is 140 when rotating between the first belt side connecting member and the second belt side connecting member. Therefore, the user's finger or the like is not sandwiched between the side peripheral surfaces of the first belt side connecting member and the second belt side connecting member. Therefore, the user does not pinch a finger or the like at the belt connector.

  According to the invention of claim 4, in addition to the effect of the invention of claim 1 or claim 2, the front end sides of both side circumferential surfaces intersect when rotating between the first belt side connecting member and the second belt side connecting member. However, a sandwiching object escape space is formed on the inner peripheral side from the intersection. Therefore, when the user is likely to pinch a finger or the like between the front end sides of the side peripheral surfaces of both the first belt side coupling member and the second belt side coupling member, the first belt side coupling member and the second belt side coupling member are connected. It is possible to escape not only to the outer space on both side peripheral surfaces of the member but also to the sandwiched object escape space on the inner peripheral side. Therefore, it is possible to avoid as much as possible a problem that the user pinches a finger or the like between the side peripheral surfaces of both the first belt side connecting member and the second belt side connecting member. Therefore, it is possible to avoid as much as possible the problem of the user pinching a finger or the like at the belt connector.

  According to the invention of claim 5, when the worker is in a normal standing posture, for example, the position where the upper body side connecting member and the lower body side connecting member are close to each other by the biasing force of the biasing means, that is, the connecting portion is In the contracted state, the harness-type safety belt restrains both the upper and lower body of the worker with appropriate restraining force. When the operator stretches the body or bends the body laterally, an external force in a direction that separates the upper body restraint belt portion and the lower body restraint belt portion from each other acts on the connecting portion. Then, the upper body side connecting member and the lower body side connecting member of the connecting portion move in a direction away from each other against the urging force of the urging means, and the connecting portion is in an extended state. For example, when the worker returns to a normal standing posture, the position where the upper body side connecting member and the lower body side connecting member come close to each other by the biasing force of the biasing means, that is, the connecting portion returns to the contracted state. Further, when the worker bends forward or backward, the connection part rotates between the upper body side connecting member and the lower body side connecting member so that the worker can perform forward bending motion and backward bending motion. It can be done smoothly. From the above, it is possible to provide a harness-type safety belt with good mobility of the operator's stretching exercise, lateral body bending exercise, forward bending exercise, and backward bending exercise.

  According to the sixth aspect of the present invention, in addition to the effect of the fifth aspect of the invention, the belt connector includes an upper body side connecting member, a lower body side connecting member, and a connecting rod that connects them, a rod regulating member, and an urging force. Since it is only necessary to add means, a simple configuration can be achieved. With a simple configuration, it is possible to reduce the cost and weight as much as possible.

  According to the invention of claim 7, in addition to the effect of the invention of claim 5 or 6, the crossing angle of both side peripheral surfaces does not become less than 140 degrees during the rotation between the upper body side connecting member and the lower body side connecting member. Therefore, an operator's finger etc. are not pinched between the side peripheral surfaces of both the upper body side connecting member and the lower body side connecting member.

  According to the invention of claim 8, in addition to the effect of the invention of claim 5 or claim 6, even if the front end sides of both side circumferential surfaces intersect when rotating between the upper body side connecting member and the lower body side connecting member, A holding object escape space is formed on the inner periphery side from the intersection. Therefore, when the operator is likely to pinch a finger or the like between the front end sides of both the upper body side connecting member and the lower body side connecting member, the side surface of both the upper body side connecting member and the lower body side connecting member It is possible to escape not only to the outer space but also to the sandwiched object escape space on the inner periphery side. Therefore, it is possible to avoid as much as possible the trouble that the operator holds a finger or the like between the side peripheral surfaces of both the upper body side connecting member and the lower body side connecting member.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

(Embodiment)
1 to 5 show an embodiment in which the present invention is applied to a harness-type safety belt that is a belt structure, FIG. 1 is a front view of the harness-type safety belt, and FIG. 3 is a partially cutaway perspective view of the belt connector, FIG. 4A is a front view of the belt connector in a contracted state, and FIG. 4B is an extended state of the belt connector. FIG. 5A is a front view when the rotation angle between the two connecting members is 0 degree, and FIG. 5B is a front view when the rotation angle between the two connecting members is 15 degrees. 5 (c) is a front view when the rotation angle between the two connecting members is 30 degrees, and FIG. 5 (d) is a front view when the rotation angle between the two connecting members is 45 degrees. 5 (e) is a front view when the rotation angle between the two connecting members is 60 degrees, and FIG. 5 (f) shows the rotation angle between the two connecting members. It is a front view of a 5 °.

  As shown in FIGS. 1 and 2, the harness-type safety belt HS that is a belt structure includes an upper body restraint belt portion 1 that is a first belt body that is hung on the upper body of an operator, and a first belt that is hung on the lower body of the worker. It has a lower body restraint belt portion 10 that is a two-belt body, and a pair of left and right belt couplers 20 that connect between the upper body restraint belt portion 1 and the lower body restraint belt portion 10.

  The upper body restraint belt portion 1 includes a pair of left and right shoulder belts 2a, 2b in a loop shape and a chest belt 3 that connects the pair of left and right shoulder belts 2a, 2b at the chest position. The pair of left and right shoulder belts 2a and 2b intersect with each other by a buckle 4 at the back. One end of a connecting belt 5 for connecting to a lanyard (not shown) is fixed at this intersection. One end side of the chest belt 3 is fixed to one shoulder belt 2a by sewing. A male connector 6 is fixed to the other end side of the chest belt 3. The female connector 7 is fixed to the chest position of the other shoulder belt 2b. By mounting the male connector 6 and the female connector 7, the chest belt 3 can be mounted between the pair of left and right shoulder belts 2a, 2b.

  The lower body restraint belt portion 10 includes a pair of left and right crotch belts 11a and 11b in a loop shape, and a buttocks belt 12 that connects the pair of left and right crotch belts 11a and 11b at the buttocks position. Each of the crotch belts 11a and 11b can be attached and detached by attaching and detaching the pair of connecting hooks 13 and 14, respectively. Both ends of the buttocks support belt 12 are fixed to a pair of left and right crotch belts 11a and 11b by sewing. A back space surrounded by the pair of left and right shoulder belts 2a and 2b, the pair of left and right crotch belts 11a and 11b, and the buttocks support belt 12 is covered with a mesh-like back support portion 15.

  As shown in detail in FIGS. 3 and 4 (a) and 4 (b), each belt connector 20 is an upper body side connection member which is a first belt side connection member fixed to the lower ends of the loop-shaped shoulder belts 2a and 2b. A member 21, a lower body side connecting member 22, which is a second belt side connecting member fixed to the upper ends of the loop-shaped crotch belts 11 a and 11 b, and a connection for connecting the upper body side connecting member 21 and the lower body side connecting member 22 Rod 23.

  The upper body side connecting member 21 is made of metal (for example, aluminum alloy), and includes two disk portions 21a and 21b and a connecting wall portion 21c that connects them at the upper end. An insertion slit 21d is formed between the two disk portions 21a and 21b. A pair of belt fixing holes 21e penetrating the insertion slit 21d is provided on the upper end side of the two disk portions 21a and 21b. The lower end sides of the left and right shoulder belts 2a and 2b are fixed using the pair of belt fixing holes 21e. A circular rod support hole 21f penetrating the insertion slit 21d is formed on the lower side of the two disk portions 21a and 21b.

  The lower body side connecting member 22 has a disk shape made of metal (for example, aluminum alloy) like the upper body side connecting member 21, and a pair of belt fixing holes 22a are provided on the lower end side thereof. The upper ends of the left and right crotch belts 11a and 11b are fixed using the pair of belt fixing holes 22a. The upper side of the lower body side connecting member 22 is inserted into the insertion slit 21 d of the upper body side connecting member 21. A long hole 22b extending in the vertical direction is formed at a position where the lower body side connecting member 22 is inserted into the insertion slit 21d. A pair of guide grooves 22c are formed on the left and right side peripheral surfaces of the long hole 22b. Each guide groove 22c is formed over substantially the entire area of the long hole 22b.

  The rod restricting member 24 is disposed in the long hole 22b and the pair of guide grooves 22c, and moves in the long hole 22b by being guided by the pair of guide grooves 22c. The compression coil spring 25 that is an urging means is disposed in the long hole 22 b above the rod restricting member 24. The rod regulating member 24 urges the connecting rod 23 downward, that is, the upper body side connecting member 21 and the lower body side connecting member 22 in the contracting direction close to each other by the spring force of the compression coil spring 25. The surface of the rod restricting member 24 that presses the connecting rod 23 is formed as an arc-depressed surface 24a.

  The connecting rod 23 passes through the rod support hole 21f of the upper body side connecting member 21 and the long hole 22b of the lower body side connecting member 22, and a nut (not shown) is screwed through the washer (not shown) into the penetrating tip side. Has been. That is, the upper body side connecting member 21 and the lower body side connecting member 22 are connected by the connecting rod 23.

  The connecting rod 23 is pressed by the rod restricting member 24 that receives the spring force of the compression coil spring 25 in the long hole 22 b of the lower body side connecting member 22. Therefore, in the state where the external force does not act in the direction in which the upper body side connecting member 21 and the lower body side connecting member 22 are separated from each other, the upper body side connecting member 21 and the lower body side connecting member 22 are close to each other as shown in FIG. Located in the contracted position. Then, when an external force acts in a direction in which the upper body side connecting member 21 and the lower body side connecting member 22 are separated from each other, the connecting rod 23 is controlled against the spring force of the compression coil spring 25 as shown in FIG. The upper body side connecting member 21 and the lower body side connecting member 22 move in the extending direction so as to be separated from each other. And as shown in FIG.4 (b), the rod control member 24 moves to the largest expansion | extension position which contact | abuts to the upper end surface of the long hole 22b.

  In other words, the upper body side connecting member 21 and the lower body side connecting member 22 can move in a direction away from and close to each other within a range in which the connecting rod 23 can move in the long hole 22b while maintaining a connected state. The springs of the compression coil springs 25 are biased toward each other.

  The upper body side connecting member 21 and the lower body side connecting member 22 are supported so as to be rotatable around the connecting rod 23 described above. The side peripheral surface of the upper body side connecting member 21 and the side peripheral surface of the lower body side connecting member 22 intersect when viewed from the front. The crossing angle A varies depending on the rotation angle between the upper body side connecting member 21 and the lower body side connecting member 22, but the rotation angle is set to an angle of 140 degrees or more at any angle. In this embodiment, since the upper body side connecting member 21 and the lower body side connecting member 22 are both disc-shaped, the crossing angle A is 140 degrees at the minimum.

  Specifically, as shown in FIG. 5A, when the rotation angle between the upper body side connecting member 21 and the lower body side connecting member 22 is 0 degree, the crossing angle A is 154 degrees, as shown in FIG. Furthermore, when the rotation angle is 15 degrees, the intersection angle A is 146 degrees, and as shown in FIG. 5C, when the rotation angle is 30 degrees, the intersection angle A is 140 degrees. This intersection angle A is the smallest. When the rotation angle exceeds 30 degrees, the intersection angle A also gradually increases. As shown in FIG. 5D, when the rotation angle is 45 degrees, the intersection angle A is 141 degrees, and as shown in FIG. Thus, when the rotation angle is 60 degrees, the intersection angle A is 146 degrees, and as shown in FIG. 5F, the intersection angle A is 163 degrees when the rotation angle is 75 degrees.

  Next, the operation of the harness-type safety belt HS described above will be described. As shown in FIG. 2, when the worker is in a normal standing posture or the like, the upper body side connecting member 21 and the lower body side connecting member 22 are positioned at contracted positions close to each other by the spring force of the compression coil spring 25. The harness-type safety belt HS restrains both the upper body and the lower body of the worker with an appropriate restraining force.

  When the operator stretches the body or bends the body laterally, an external force in a direction that separates the upper body restraint belt portion 1 and the lower body restraint belt portion 10 from each other acts on the belt connector 20. Then, as shown in FIG. 4 (b), the upper body side connecting member 21 and the lower body side connecting member 22 of the belt connector 20 move in the extending direction away from each other against the spring force of the compression coil spring 25.

When the worker returns to a normal standing posture or the like, the upper body side connecting member 21 and the lower body side connecting member 22 return to the contracted positions close to each other by the spring force of the compression coil spring 25 as shown in FIG. Further, the upper body side connecting member 21 and the lower body side connecting member 22 rotate about the connecting rod 23. As described above, the belt connector 20 according to this embodiment is telescopic and rotatable, The belt connector 20 having a high degree of freedom can be provided. And the harness-type safety belt HS using such a belt coupler 20 is excellent in the mobility of an operator's extension exercise | movement, a body horizontal bending exercise | movement, a forward bending exercise | movement, and a back bending exercise | movement.

  In this embodiment, the crossing angle A at which the side circumferential surfaces of both the upper body side connecting member 21 and the lower body side connecting member 22 intersect is 140 degrees or more regardless of the rotation angle. Therefore, there is no problem that the operator holds a finger or the like between the side peripheral surfaces of both the upper body side connecting member 21 and the lower body side connecting member 22.

  In this embodiment, a long hole 22b is provided in the lower body side connecting member 22, a rod support hole 21f is provided in the upper body side connecting member 21, and a connecting rod 23 is inserted into the long hole 22b and the rod support hole 21f. Therefore, the upper body side connecting member 21 and the lower body side connecting member 22 are provided so as to be movable while maintaining a connected state, and the rod regulating member that moves in the long hole 22b and receives the spring force of the compression coil spring 25 is provided. 24, and the rod regulating member 24 presses the connecting rod 23, whereby the upper body side connecting member 21 and the lower body side connecting member 22 are urged in the contraction direction close to each other. Therefore, since the belt connector 20 only needs to add the rod regulating member 24 and the compression coil spring 25 in addition to the upper body side connecting member 21, the lower body side connecting member 22, and the connecting rod 23 for connecting them, the belt connector 20 configurations can be simplified. With such a simple configuration, it is possible to reduce the cost and weight of the belt connector 20 as much as possible.

  In this embodiment, the upper body side connecting member 21 and the lower body side connecting member 22 are made of metal (for example, an aluminum alloy). However, the present invention is not limited to the above embodiment, and the strength requirement is satisfied. Other materials may be used. The material used may be a single material or a plurality of materials. For example, if the whole or part of the outer peripheral surface of the upper body side connecting member 21 and the lower body side connecting member 22 is covered with resin, the wear of the belt can be prevented. Further, since the urging means is constituted by the compression coil spring 25, the urging force can be easily adjusted by replacing the compression coil spring 25. The biasing means may be a spring other than the compression coil spring 25, or may be constituted by something other than the spring. Further, the connecting rod 25 may be connected in a configuration other than that in which a nut is screwed through a washer such as a screw, caulking, or welding.

  In this embodiment, since the upper body side connecting member 21 and the lower body side connecting member 22 can be rotated by 75 degrees or more, further improvement of the operator's forward bending motion and backward bending motion can be achieved.

(First modification of belt connector)
6 (a) and 6 (b) show a first modification of the belt connector, FIG. 6 (a) is a front view of the belt connector in a contracted state, and FIG. 6 (b) is an extended state of the belt connector. It is a front view.

  As shown in FIGS. 6A and 6B, the belt connector 20A according to the first modified example is an upper body that is a first belt-side connecting member as compared with that of the first embodiment. The shapes of the side connecting member 21A and the lower body side connecting member 22A which is the second belt side connecting member are different.

  That is, the upper body side connecting member 21A is basically disc-shaped, but its lower end side is formed in a shape cut along a substantially elliptical outline. The lower body side connecting member 22A is also basically in the shape of a disk, and the upper end side thereof is formed in a shape cut along a substantially elliptical outline. And the intersection angle A of the side peripheral surfaces of both the upper body side connecting member 21A and the lower body side connecting member 22A is an angle of 140 degrees or more regardless of the angle of rotation, as in the first embodiment. It is set to be.

  The stretchable structure and the like of the belt connector 20A are the same as those in the above embodiment, and thus the description thereof is omitted. The same components in the drawings are denoted by the same reference numerals for clarification.

  Even in the first modified example, the belt connector 20A expands and contracts similarly to the above-described embodiment, so that the mobility of the worker's stretching motion and body bending motion is good. Since the upper body side connecting member 21A and the lower body side connecting member 22A rotate around the connecting rod 23, the operator's forward bending motion and backward bending mobility are good. Further, there is no problem that an operator pinches a finger or the like between the side peripheral surfaces of both the upper body side connecting member 21A and the lower body side connecting member 22A.

(Second modification of belt connector)
7 (a), 7 (b), 8 (a), and 8 (b) show a second modification of the belt connector, FIG. 7 (a) is a front view of the belt connector in a contracted state, and FIG. b) is a front view of the belt connector in the extended state, and FIG. 8A is a rotational position where the tip of the side peripheral surface of the upper body side connecting member and the tip of the side peripheral surface of the lower body side connecting member are in contact with each other when viewed from the front. FIG. 8 (b) is a diagram showing a state in which it has been rotated further than the rotational position in FIG. 8 (a).

  As shown in FIGS. 7A and 7B, the belt connector 30 according to the second modified example is an upper body side connecting member which is a first belt side connecting member, as compared with the above-described embodiment. 31 and the shape of the lower body side connecting member 32 that is the second belt side connecting member are different. The upper body side connecting member 31 and the lower body side connecting member 32 are each formed of a semi-disc-shaped umbrella portion 31a and a trunk portion 31b protruding from the umbrella portion 31a. And it is connected by the connecting rod 23 at the position of the mutual trunk part 31b.

  Since the stretchable structure of the belt connector 30 is the same as that of the above embodiment, the description thereof is omitted. The same components in the drawings are denoted by the same reference numerals for clarification.

  The side circumferential surface of the upper body side coupling member 31 and the side circumferential surface of the lower body side coupling member 32 do not intersect in a region where the rotation angle is small, but do not intersect until the rotation angle increases to some extent. As shown in FIGS. 8 (a) and 8 (b), the rotational position where the front end sides of both the upper body side connecting member 31 and the lower body side connecting member 32 intersect, and the side circumferential surfaces beyond the intersection. At the rotational position where the distal end sides overlap, a sandwiched object escape space S1 is formed on the inner peripheral side of the intersection of the upper body side connecting member 31 and the lower body side connecting member 32.

  Even in the second modification, the belt connector 30 expands and contracts in the same manner as in the above-described embodiment, so that the mobility of the operator's stretching motion and body bending motion is good. Since the upper body side connecting member 31 and the lower body side connecting member 32 rotate about the connecting rod 23, the mobility of the operator's forward bending motion and backward bending motion is good.

  In the second modified example, at the rotational position where the tips of the side peripheral surfaces of both the upper body side connecting member 31 and the lower body side connecting member 32 intersect, the object is sandwiched closer to the inner peripheral side than the intersection of both side peripheral surfaces. A clearance space S1 is formed. Therefore, when an operator is likely to pinch a finger or the like between the front end sides of both the upper body side connecting member 31 and the lower body side connecting member 32, both the upper body side connecting member 31 and the lower body side connecting member 32 are used. It is possible to escape not only to the outer space on the side peripheral surface but also to the sandwiched object escape space S1 on the inner peripheral side. Therefore, it is possible to avoid as much as possible the trouble that the operator holds a finger or the like between the side peripheral surfaces of both the upper body side connecting member 31 and the lower body side connecting member 32.

  The sandwiched object escape space S1 becomes small when the rotation angle of the upper body side connecting member 31 and the lower body side connecting member 32 becomes too large, and therefore only within a range that can secure a space necessary for avoiding the operator's fingers and the like. It is preferable to restrict the rotation so that the connecting members 31 and 32 are rotated.

  In the second modification, the upper body side connecting member 31 and the lower body side connecting member 32 are rotatable between the upper body side connecting member 31 and the lower body side connecting member 32 and the belt connecting tool 30 expands and contracts. Even if an operator's finger or the like is sandwiched between both side peripheral surfaces, the upper body side connecting member 31 and the lower body side connecting member 32 change in a direction away from each other. Etc. can be pulled out, and there is an advantage that it is not pinched with a strong force even if it is pinched.

(Third modification of belt connector)
9 (a), 9 (b), 10 (a), and 10 (b) show a third modification of the belt connector, FIG. 9 (a) is a front view of the belt connector in a contracted state, and FIG. b) is a front view of the belt connector in the extended state, and FIG. 10A is a rotational position where the tip of the side peripheral surface of the upper body side connecting member and the tip of the side peripheral surface of the lower body side connecting member are in contact with each other when viewed from the front. FIG. 10 (b) is a diagram showing a state in which it has been rotated further than the rotational position in FIG. 10 (a).

  As shown in FIGS. 9A and 9B, the belt connector 40 according to the third modified example is an upper body side connecting member that is a first belt side connecting member, as compared with that of the above embodiment. 41 and the shape of the lower body side connecting member 42 which is the second belt side connecting member are different. The upper body side connecting member 41 and the lower body side connecting member 42 are basically similar to those of the second modified example, and include crescent-shaped umbrella portions 41a and 42a and trunk portions 41b and 42b protruding from the umbrella portions 41a and 42a. Are formed respectively.

  Since the stretchable structure of the belt connector 40 is the same as that of the above embodiment, the description thereof is omitted. The same components in the drawings are denoted by the same reference numerals for clarification.

  Also in this third modification, the side peripheral surface of the upper body side connecting member 41 and the side peripheral surface of the lower body side connecting member 42 do not intersect in a region where the rotation angle is small, but intersect only when the rotation angle is increased to some extent. . As shown in FIGS. 10 (a) and 10 (b), the upper body side connecting member 41 and the lower body side connecting member are at a rotational position where the distal end sides of both side surfaces of the upper body side connecting member 41 and the lower body side connecting member 42 intersect. A sandwiched object escape space S2 is formed on the inner peripheral side of the 42 intersection.

  Even in the third modification, the belt connector 40 expands and contracts in the same manner as in the above-described embodiment, and therefore the mobility of the operator's stretching motion and body bending motion is good. Since the upper body side connecting member 41 and the lower body side connecting member 42 rotate about the connecting rod 23, the mobility of the operator's forward bending motion and backward bending motion is good. In addition, for the same reason as in the second modification, it is possible to avoid as much as possible that the operator holds a finger or the like between the side peripheral surfaces of the upper body side connecting member 41 and the lower body side connecting member 42.

  Moreover, in this 3rd modification, since the pinching object escape space S2 is large compared with the 2nd modification, the rotation tolerance | permissible_range of the upper body side connection member 41 and the lower body side connection member 42 can be taken large.

(Other)
In the above-described embodiment and the like, the rod support hole 21f is provided in the upper body side connecting member 21, and the long hole 22b is provided in the lower body side connecting member 22. Conversely, the long hole 22b is provided in the upper body side connecting member 21 and the lower body side. The side connection member 22 may be provided with a rod support hole 21f.

  In the embodiment and the first modification, the upper body side connecting members 21 and 21A and the lower body side connecting members 22 and 22A are formed into a disc shape or a substantially disc shape, so that the crossing angle A of both side peripheral surfaces is 140. However, the shape of the upper body side connecting members 21 and 21A and the lower body side connecting members 22 and 22A is not limited as long as the crossing angle A between both side peripheral surfaces can be configured to be 140 degrees or more. Further, the shapes of the upper body side connecting members 21 and 21A and the lower body side connecting members 22 and 22A may not be the same. For example, one connecting member according to the first embodiment and one connecting member according to the first modification may be combined.

  In the 2nd modification and the 3rd modification, although the upper body side connection members 31 and 41 and the lower body side connection members 32 and 42 were substantially mushroom-shaped, the sandwiched object escape spaces S1 and S2 were configured. What is necessary is just a shape which can comprise the clamping thing escape space S1, S2 between both of 31 and 41 and the lower body side connection members 32 and 42. FIG. Specifically, as shown in FIG. 11, when the shape of the connecting member is a shape composed of the umbrella portion 31 a and the trunk portion 31 b as in the second and third modifications, the vertical line B of the trunk portion 31 b On the other hand, the angle formed by the inner peripheral surfaces 50 and 51 of the umbrella part 31a only needs to be larger than 0 degree (in the case of the second modification), and as the angle becomes larger as in the third modification, the sandwiched object escape space is increased. To increase safety.

  In the above-described embodiments and the like, the case where the present invention is applied to the belt connector 20, 20A, 30, 40 of the harness-type safety belt HS that is a belt structure has been shown, but a rucksack, a parachute, or the like that is a belt structure. It can also be applied to the connection between the belts.

1 is a front view of a harness type safety belt according to an embodiment of the present invention. It is a perspective view which shows the embodiment of the present invention and shows a state where an operator wears a harness-type safety belt. FIG. 2 is a partially cutaway perspective view of the belt connector according to the embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Embodiment of this invention is shown, (a) is a front view of the contraction state of a belt coupler, (b) is a front view of the expansion | extension state of a belt coupler. The embodiment of this invention is shown, (a) is a front view in case the rotation angle between both connection members is 0 degree | times, (b) is the case in which the rotation angle between both connection members is 15 degree | times. Front view, (c) is a front view when the rotation angle between both connecting members is 30 degrees, (d) is a front view when the rotation angle between both connecting members is 45 degrees, (e) Is a front view when the rotation angle between the two connecting members is 60 degrees, and (f) is a front view when the rotation angle between the two connecting members is 75 degrees. The 1st modification of a connection part is shown, (a) is a front view of the contraction state of a belt connection tool, (b) is a front view of the expansion state of a belt connection tool. The 2nd modification of a belt connector is shown, (a) is a front view of the contraction state of a belt connector, (b) is a front view of the expansion state of a belt connector. A second modification of the belt connector is shown, wherein (a) shows a state in which the tip of the side peripheral surface of the upper body side connecting member and the tip of the side peripheral surface of the lower body side connecting member are rotated to a rotational position where they contact when viewed from the front. (B) is a figure which shows the state which rotated further from the rotation position of Fig.8 (a). The 3rd modification of a belt coupling tool is shown, (a) is a front view of the contraction state of a belt coupling tool, (b) is a front view of the expansion | extension state of a belt coupling tool. Fig. 3 shows a third modification of the belt connector, wherein (a) shows a state in which the tip of the side peripheral surface of the upper body side connecting member and the tip of the side peripheral surface of the lower body side connecting member are rotated to a rotational position where they contact each other when viewed from the front. (B) is a figure which shows the state which rotated further from the rotation position of Fig.10 (a). It is a figure explaining the requirements which comprise the proper clamping thing escape space with both connection members. It is a front view of the harness type safety belt of a prior art example. It is a perspective view which shows the state which the operator mounted | wore with the harness type safety belt of the prior art example. It is a front view of a belt connection part of proportionality. The proportional belt connector is shown, (a) is a front view when the rotation angle between both connection members is 0 degree, (b) is the case where the rotation angle between both connection members is 15 degrees. A front view and (c) are front views in case the rotation angle between both connection members is 30 degree | times.

Explanation of symbols

HS harness type safety belt (belt structure)
1 Upper body restraint belt (first belt)
10 Lower body restraint belt (second belt)
20, 20A, 30, 40 Belt connector 21, 21a, 31, 41 Upper body side connecting member (first belt side connecting member)
21f Rod support hole 22, 21b, 32, 42 Lower body side connecting member (second belt side connecting member)
22b long hole 23 connecting rod 24 rod restricting member 25 compression coil spring (biasing means)
S1, S2 Nipping object escape space

Claims (8)

A belt coupler for coupling the first belt body and the second belt body,
A first belt side connecting member fixed to the first belt body, and a second belt side connecting member fixed to the second belt body, wherein the first belt side connecting member and the second belt side The connecting member is rotatable and is provided so as to be movable in a direction away from and close to each other while maintaining a connected state, and the first belt side connecting member and the second belt side connecting member are mutually connected. A belt coupler that is biased by a biasing means in a direction in which it approaches. The belt connector according to claim 1,
The first belt side connecting member and the second belt side connecting member are provided with a long hole in one of the connecting members, a rod supporting hole in the other connecting member, and the long hole and the rod supporting hole. By inserting a connecting rod into the first belt side connecting member and the second belt side connecting member are provided movably while maintaining a connected state,
A rod restricting member that moves in the elongated hole and receives an urging force of the urging means is provided, and the rod restricting member presses the linking rod, whereby the first belt side connecting member and the first 2. A belt connector characterized in that the two belt side connecting members are biased in the direction of approaching each other. The belt connector according to claim 1 or 2,
The crossing angle at which the side circumferential surfaces of both the first belt side connecting member and the second belt side connecting member intersect with each other is the rotation angle between the first belt side connecting member and the second belt side connecting member. A belt connector characterized by being provided so that the rotational angle is 140 degrees or more. The belt connector according to claim 1 or 2,
The leading end sides of the side peripheral surfaces of both the first belt side connecting member and the second belt side connecting member do not intersect each other in the region where the rotation angle is small, but intersect with each other with a large rotation angle. A belt coupling tool characterized in that, in the rotational position, a clamped object escape space is formed on the inner circumferential side with respect to the intersection of the side circumferential surfaces of both the first belt side coupling member and the second belt side coupling member. . A harness-type safety belt in which an upper body restraint belt portion that is hung on the upper body of an operator and a lower body restraint belt portion that is hung on the lower body of the worker are connected by a belt connector,
The belt connector includes an upper body side connecting member fixed to the upper body restraining belt portion, and a lower body side connecting member fixed to the lower body restraining belt portion, and the upper body side connecting member and the lower body side connecting member. The upper body side connecting member and the lower body side connecting member are urged in the directions approaching each other while being rotatable and movable in a direction away from and close to each other while maintaining a connected state. Harness type safety belt characterized by being biased by means. The harness-type safety belt according to claim 5,
In the upper body side connecting member and the lower body side connecting member, a long hole is provided in one of the connecting members, a rod support hole is provided in the other connecting member, and a connecting rod is provided in the long hole and the rod support hole. By being inserted, the upper body side connecting member and the lower body side connecting member are provided movably while maintaining a connected state,
A rod restricting member that moves in the elongated hole and receives the urging force of the urging means is provided, and the rod restricting member presses the linking rod, whereby the upper body side connecting member and the lower body side connected A harness-type safety belt characterized in that the members are biased in a direction close to each other. The harness-type safety belt according to claim 5 or 6,
The crossing angle at which the side circumferential surfaces of both the upper body side connecting member and the lower body side connecting member intersect is 140 degrees or more regardless of the rotation angle between the upper body side connecting member and the lower body side connecting member. A harness-type safety belt characterized by being provided. The harness-type safety belt according to claim 5 or 6,
The leading end sides of the side peripheral surfaces of both the upper body side connecting member and the lower body side connecting member do not intersect with each other in a region where the rotation angle is small, but intersect with each other with a large rotation angle. A harness-type safety belt, wherein a clamped object escape space is formed on the inner peripheral side of the intersection of the side peripheral surfaces of both the upper body side connecting member and the lower body side connecting member.

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