Safety belt attachment tool

Abstract

To provide a safety belt attachment tool which can be attached to a handrail of a fence or the like, can ensure efficient safety, and does not require replacement work.SOLUTION: A safety belt attachment tool 1 includes: a body part 10 which is attached on a rod-shaped body (e.g., handrail 101) so as to slide in a direction in which the handrail 101 extends; an attachment part 20 which is provided in the body part 10 and to which a safety belt is attached; and a pair of sandwiching parts 31 which are provided in the body part 10, the sandwiching part 31 locking the body part so as to sandwich a lower end of the handrail 101 to which the body part 10 is attached. The pair of sandwiching parts 31 include: a connection part which has an elastic body and connects the pair of sandwiching parts 31, at an upper part; and contact parts which contact the sandwiched rod-shaped body and lock the body part to the rod-shaped body, each at a lower part.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a safety belt attachment. [Background technology]

[0002] To prevent falls, trips, and the like, workers may attach the hook of their safety belt to the railing of a fence installed around them while working. In this case, when the worker moves, he or she moves while changing the hook. As devices that have a part for attaching the hook of such a safety belt (a part for attaching the safety belt) and can be attached to the railing of a fence, there are inventions described in Patent Documents 1 to 3, for example.

[0003] Patent Document 1 describes a fall prevention device that utilizes a rail to engage with the lanyard of a safety belt worn by the worker to support the worker. The device body of this fall prevention device is composed of a pair of legs and a top, with a hook attachment provided in the center of the top surface, two rolling means such as ball casters attached to the inner surfaces of the legs and the top, and one of the legs is configured to be swingable by a hinge. Patent document 1 also describes that this fall prevention device can prevent the legs from swinging by inserting a U-shaped stopper into a tubular member on the side end face of the leg, and that rolling means provided on each of the pair of legs clamp the inner and outer surfaces of the rail body while the stopper can prevent the legs from swinging.

[0004] Patent Document 2 also describes a safety belt attachment device that eliminates the need for workers to change the hook of the safety belt when moving. This safety belt attachment device has a main body that is slidably attached to a fence and an attachment part to which the hook of the safety belt is attached, and the opening forming part of the main body is configured to be inserted into the fence from above and has an opening that is open in the direction of movement. The opening forming part also includes a pair of clamping surfaces that are arranged to sandwich the fence, and when a tensile load including a vertically downward component is applied from the safety belt to the attachment part, the pair of clamping surfaces are received by the fence to restrict the rotation of the main body when viewed from the direction of movement.

[0005] Patent Document 3 describes a lifeline attachment guide that is designed to allow passage when the handrail is curved, or when the outer diameter of the handrail holding member is larger than the specifications, or when there is an obstruction along the way of the handrail. This lifeline attachment guide is composed of a cylinder, one or more upper rollers and a right roller that rotatably contact the top and right side of the handrail, respectively, and two left rollers, one in front and one in back, that rotatably contact the left side of the handrail. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2009-240357 A [Patent Document 2] JP 2023-135927 A [Patent Document 3] JP 2018-042701 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, the fall prevention device described in Patent Document 1 is designed to be attached to a rail of a railway line, which has a narrow width at its bottom and a wide width at its upper end when viewed from the side, and cannot be used for handrails of a fence or the like.

[0008] In addition, the safety belt fastening device described in Patent Document 2 has a pair of clamping surfaces that are arranged to clamp the fence up to the middle bar, thereby restricting rotation of the main body when viewed from the direction of movement. Even if a worker falls from the scaffolding, the safety belt fastening device will not come off the fence and can support the weight of the worker. However, it cannot be used on fences that do not have a middle bar.

[0009] In addition, in order to attach the lifeline attachment guide described in Patent Document 3 to the handrail, it is necessary to fit the cylindrical body from the end of the handrail along the longitudinal direction of the handrail and to adjust the spring that biases the left roller toward the handrail.

[0010] Therefore, an object of the present invention is to provide a safety belt fastening device that can be easily attached to a handrail or the like of a fence, can ensure sufficient safety, and does not require re-attachment work. [Means for solving the problem]

[0011] The safety belt attachment device of the present invention comprises a main body attached to a rod-shaped body so as to be slidable along the direction in which the rod-shaped body extends, an attachment part provided on the main body to which the safety belt is attached, and a pair of clamping parts provided on the main body that clamp and engage the lower end of the rod-shaped body to which the main body is attached, The pair of clamping portions have, at their upper portions, a connecting portion having an elastic body that connects the pair of clamping portions, and, at their lower portions, abutting portions that abut against the clamped rod-shaped body to engage the main body portion with the rod-shaped body.

[0012] As a result, when the main body is attached to a rod-shaped body (e.g., a handrail), the abutting parts of the pair of clamping parts come into contact with the lower end of the rod-shaped body, locking the main body to the rod-shaped body, so that the main body (safety belt attachment) is securely attached to the rod-shaped body. Also, because the pair of clamping parts are connected by a connecting part having an elastic body, even if there is an obstacle (e.g., a fence post) in the traveling direction of the safety belt attachment, the upper parts of the pair of clamping parts contract when pushed by the obstacle and the lower parts open, while when the safety belt attachment passes over the obstacle, the elastic force of the elastic body closes the open lower parts of the pair of clamping parts, and the main body is again locked to the rod-shaped body.

[0013] Here, it is preferable that the contact portion is a sliding member that slides against the rod-shaped body, or a rotating body.

[0014] In addition, the pair of clamping portions have a pair of arm portions, an operating portion provided on each upper end of the pair of arm portions for contracting the elastic body to open the lower portion of the pair of clamping portions, an arm support portion, and a fulcrum portion for rotatably connecting the pair of arm portions to the arm support portion, and it is desirable that the abutment portion be provided on each lower portion of the pair of arm portions.

[0015] It is preferable that the safety belt attachment device is configured with guide portions provided at one end and the other end of the main body in the traveling direction, and the guide portions are inclined diagonally downward toward the inside when viewed from the front.

[0016] In addition, it is desirable that the safety belt attachment device be configured so that the attachment part is provided substantially in the center of the main body, and the pair of clamping parts are provided at two locations on either side of the attachment part. Effect of the Invention

[0017] With the safety belt fastener of the present invention, due to its configuration, it can be easily attached to the handrail of a fence or the like, sufficient safety can be ensured, and the work of changing the belt can be eliminated. [Brief description of the drawings]

[0018] [Figure 1] 1 is a schematic front view of a safety belt attachment device according to an embodiment of the present invention; [Diagram 2] 1 is a schematic plan view of a safety belt attachment device according to an embodiment of the present invention; [Diagram 3] 3 is a cross-sectional view of the safety belt attachment device shown in FIG. 2, with a portion thereof omitted; FIG. [Figure 4] FIG. 3 is a cross-sectional view of the safety belt attachment device shown in FIG. 2, with a portion thereof omitted. [Diagram 5] 5 is a diagram showing a state in which a lower part of the sandwiching part of the safety belt attachment device shown in FIG. 4 is open. FIG. [Figure 6] FIG. 3 is a cross-sectional view of the safety belt attachment device shown in FIG. 2, with a portion thereof omitted. [Figure 7] FIG. 11 is a perspective view of a safety belt attachment according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] The following describes in detail an embodiment of the present invention. The following description of the constituent elements is an example (representative example) of an embodiment of the present invention, and the present invention is not limited to the following content unless the gist of the present invention is changed. Additionally, in this description, the direction in which the handrail 101 extends is designated as X (see FIG. 1), the vertical direction is designated as Y (see FIG. 1), and the forward and backward directions are designated as Z (see FIG. 2). In this description, the X direction and the travel direction are synonymous, the Y direction and the height direction are synonymous, and the forward direction in the Z direction is designated as the downward direction in FIG. 2.

[0020] [Safety belt attachment] First, the configurations of the safety belt attachment device 1 (FIGS. 1 to 6) and the safety belt attachment device 1A (FIG. 7) according to the embodiment of the present invention will be described with reference to the drawings. In this description, components having the same functions are given the same reference numerals in the drawings, and detailed description thereof will be omitted. The safety belt attachment device 1, 1A according to the embodiment of the present invention is attached to a handrail 101 of a fence 100 (see FIG. 7). In this embodiment, the handrail 101 is a rod-shaped body with a circular cross section. Therefore, hereinafter, the rod-shaped body to which the safety belt attachment device 1 is attached will be described as the handrail 101. The fence 100 also has a middle rail 102 and a post 103 that is provided across the handrail 101, middle rail 102, etc. A plurality of posts 103 are provided on the fence 100 at regular intervals.

[0021] The safety belt mounting device 1, 1A comprises a main body portion 10 which is attached slidably along the direction in which the handrail 101 extends, an attachment portion 20 to which the safety belt is attached, clamping portions 31, 32 which clamp the handrail 101, and roller portions 41, 42 (see Figure 1, etc.).

[0022] [Main body] The main body 10 is formed from a steel plate, an aluminum alloy plate, or the like so as to form a space 10s for accommodating the handrail 101 (see FIG. 3). In this embodiment, the width of the main body 10 when viewed from the front (see FIG. 1) is approximately 390 mm. Meanwhile, the height of the main body 10 when viewed from the front is approximately 90 mm, and is sized to completely cover the handrail 101 in the height direction.

[0023] The shape and size of the space 10s are formed to fit the shape of the handrail 101. Since there are various types of handrails 101 with different thicknesses, such as 32Φ and 38Φ, the shape and size of the main body 10 (space 10s), including the sizes shown as examples, can be appropriately modified in design to match the shape and thickness of the handrail to which the safety belt attachment is attached.

[0024] [Mounting part] In this embodiment, the attachment part 20 is provided at approximately the center of the main body part 10, and a safety belt (not shown) is attached to this attachment part. In detail, the attachment part 20 has a holding part 21 and a ring part 22 provided with a hole 22a (see Figs. 2 and 7), and a hook (not shown) of a safety belt is hooked to this hole 22a. The attachment part 20 is provided either at the front or the back in the Z direction (at the front in this embodiment), and the worker performs work on the side where the attachment part 20 is provided.

[0025] Here, the holding portion 21 holds the ring portion 22 rotatably by a rotation shaft S, a nut N, or the like (see FIG. 2). In the embodiment shown in FIGS. 1 to 3, the ring portion 22 is supported in the horizontal direction by the holding portion 21, but the holding portion 21 can rotate about a rotation shaft S1, and the ring portion 22 can face vertically downward or obliquely downward, etc. (see the dashed arrow in FIG. 3).

[0026] Since a safety belt is attached to the attachment part 20, in accordance with the worker's movements, the safety belt attachment device 1 is pulled in the X direction via the safety belt, the ring part 22 rotates, or the safety belt attachment device 1 itself rotates around the handrail 101 as an axis. Of course, the shape of the ring portion 22 and the size of the hole 22a can be appropriately modified in design to fit the hook of the safety belt to be attached.

[0027] [Clamping part] In this embodiment, a pair of clamping parts 31, 32 are provided symmetrically in a front view (see FIG. 1) on either side of the attachment part 20. The pair of clamping parts 31, 32 clamp the handrail 101 with clamping parts 31a, 31b and clamping parts 32a, 32b, and are a mechanism for locking the safety belt attachment device 1 (main body part 10) so that it does not come off the handrail 101.

[0028] The sandwiching portions 31a, 31b have arm portions 313a, 313b, and an upper portion of each of the arm portions 313a, 313b has a connecting portion 311 that connects the sandwiching portions 31a, 31b (arm portions 313a, 313b) (see FIG. 4). The connecting portion 311 is composed of a connecting shaft 3111 and an elastic body 3112. The connecting shaft 3111 is provided so as to penetrate the upper ends of the arm portions 313a, 313b, and is configured so that, when the positions of the arm portions 313a, 313b shown in FIG. 4 are set as fixed positions, the upper portions of the arm portions 313a, 313b can approach each other (see FIG. 5) or move away from each other and return to their fixed positions.

[0029] In this embodiment, a coil spring is provided around the connecting shaft 3111 as the elastic body 3112. Therefore, the upper parts of the arm parts 313a, 313b are normally open, and the lower parts of the clamping parts 31a, 31b clamp the handrail 101 and are in a fixed position (see FIG. 4) where they engage the main body part 10. Even if the upper parts approach each other (see FIG. 5), they return to their fixed positions due to the elastic force of the elastic body 3112.

[0030] Additionally, the clamping section 31 has an arm support section 312 fixed to the main body section 10, to which the arm sections 313a, 313b are rotatably connected by fulcrum sections 314a, 314b (see FIG. 4). On the other hand, abutment sections 315a, 315b are provided on the lower sections of the arm sections 313a, 313b, which abut against the clamped handrail 101 to lock the safety belt attachment device 1 (main body section 10) to the handrail 101. In this embodiment, openings 10a are provided on both side surfaces of the main body section 10 so that the abutment sections 315a, 315b abut against the handrail 101 (see FIG. 1, FIG. 4, etc.).

[0031] Therefore, when the upper portions of the arm portions 313a, 313b approach each other, the arm portions 313a, 313b rotate around the fulcrum portions 314a, 314b (see dashed arrows in Figure 5), the abutment portions 315a, 315b move away from each other, and the lower portion of the clamping portion 31 opens, temporarily releasing the clamping of the handrail 101 (the engagement of the main body portion 10) (see Figure 5).

[0032] Here, it is desirable that the abutment part is a sliding member that slides against the handrail 101. For example, by making the abutment part out of a material that has a small coefficient of friction with the handrail 101, or by making the abutment part into a rotatable cylindrical, conical, spherical, or other shape, the abutment part can be a sliding member that slides against the handrail 101 while abutting against it when the main body 10 is attached to the handrail 101 and slides.

[0033] Alternatively, the contact parts are preferably rotating bodies. The contact parts 315a, 315b in this embodiment are composed of rotating bodies 3151a, 3151b and rotating body fixing parts 3152a, 3152b that support the rotating bodies 3151a, 3151b, respectively (see FIG. 4). The rotating body fixing parts 3152a, 3152b support the rotating bodies 3151a, 3151b so that they rotate in the horizontal direction by a rotating shaft S2 and a nut N that extend in the height direction.

[0034] Furthermore, in this embodiment, the portions (approximately the upper halves) of the rotating bodies 3151a and 3151b that come into contact with the handrail 101 are formed at an angle (see FIG. 4). Therefore, the clamping part 31 firmly locks the safety belt attachment device 1 (main body part 10) to the handrail 101 by abutting the abutting parts 315a and 315b against the handrail 101 that is clamped, and when the safety belt attachment device 1 moves in the forward direction, the rotating bodies 3151a and 3151b rotate horizontally and roll on the side of the handrail 101, so that the safety belt attachment device 1 can move smoothly.

[0035] Of course, the abutment portion of the present invention is not limited to the configuration exemplified, and the shape, size, rotation direction, etc. of the rotating bodies 3151a, 3151b can be appropriately redesigned to match the shape of the handrail 101 and the shape of the part where the rotating bodies 3151a, 3151b abut.

[0036] In addition, the clamping parts 31 and 32 are provided with a pair of operating parts 316 and 326 for opening the lower parts of the clamping parts 31 and 32 when the worker attaches the safety belt attachment device 1 to the handrail 101 (see FIG. 7). In this embodiment, the pair of operating parts 316 (operating parts 316a and 316b) are so-called knob parts, and are provided on the upper part of the clamping part 31 so as to protrude vertically upward. Then, the worker pinches the operating parts 316a and 316b with his fingers and operates them so that the upper parts of the arm parts 313a and 313b approach each other (contracting the elastic body 3112), thereby opening the lower part of the clamping part 31. On the other hand, the operating part 326 has the same configuration as the operating part 316, and the worker operates the pair of operating parts 326 with his fingers to open the lower part of the clamping part 32.

[0037] The arm portions, contact portions, etc. of the clamping portion 32 have the same configuration as the clamping portion 31.

[0038] [Roller part] In this embodiment, roller parts 41, 42 are provided on the outer sides of the clamping parts 31, 32. The roller parts 41, 42 allow the safety belt attachment device 1 to move smoothly on the handrail 101 of the fence 100.

[0039] In detail, the roller unit 41 has a roller support frame 411 and rollers 412. The roller support frame 411 is fixed to the main body 10, and the rollers 412 are supported so as to rotate in a space formed within the roller support frame 411 by a rotation shaft S3 extending in the Z direction and a nut N. When the safety belt mounting device 1 moves in the traveling direction, the rollers 412 rotate about the rotation shaft S3 and roll on the handrail 101.

[0040] The roller section 42 has the same configuration as the roller section 41. In this embodiment, the roller 412 has a constricted shape that is tapered from both ends toward the center (see FIG. 6), but the shape, size, and other design changes can be made as appropriate as long as the safety belt attachment device 1 can move smoothly by rolling on the handrail 101.

[0041] [Guide section] In this embodiment, guide parts 51, 52 are provided at one end and the other end of the main body 10 in the traveling direction, respectively (see Figs. 1 and 2). The guide parts 51, 52 are inclined toward the inside of the main body 10 when viewed from the front (see Fig. 1). The safety belt attachment device 1 may rotate about the handrail 101 as an axis due to the movement of the worker, and if the worker moves in the traveling direction in this state, the main body 10 will collide with the center post 103 of the fence 100, so it is desirable to provide such guide parts. In this embodiment, ribs 511, 521 rising in the Z direction are provided on the front and back sides, respectively, to reinforce the guide parts 51, 52 (see Fig. 2).

[0042] In this embodiment, the guide parts 51, 52 are formed by processing the main body 10 so that one end and the other end have an incline, and by welding and fixing the ribs 511, 521 to the inclined parts. Of course, the inclination angle of the inclined parts of the guide parts 51, 52 can be appropriately changed in design, and the rising width and thickness of the ribs 511, 521 can also be appropriately changed in design.

[0043] Each member of the safety belt attachment device 1 described above is formed of a steel plate, an aluminum alloy plate, or the like, but the materials are not limited to those exemplified. Also, the attachment part 20, the clamping parts 31, 32, the roller parts 41, 42, and the like may be fixed to the main body part 10 by welding, or may be fixed by fasteners such as screws or bolts, or may be integrally molded.

[0044] [Safety belt attachment device operation] Next, the operation of the safety belt fastening device of the present invention will be described using the safety belt fastening device 1 as an example. A worker attaches the safety belt fastening device 1 to the handrail 101 of the fence 100, and attaches the safety belt to the attachment part 20 (ring part 22).

[0045] Here, the safety belt fastening device 1 can be attached very easily because the worker only has to operate the operating parts 316, 326 to open the lower parts of the clamping parts 31, 32 and attach it to the handrail 101. Also, since the safety belt fastening device 1 is attached only to the handrail 101, the fence 100 does not need to have a middle rail 102.

[0046] At this time, about the top 3 / 4 of the handrail 101 is firmly clamped by the main body 10, and about the remaining 1 / 4 is firmly clamped by the abutment parts 315a, 315b of the clamping part 31 (see FIG. 4). In particular, in this embodiment, the handrail 101 is firmly clamped by the two clamping parts (clamping parts 31, 32). Therefore, the safety belt fastening device 1 can be easily attached, and can be reliably attached to the handrail 101 so that it does not come off.

[0047] Therefore, even if a worker falls or trips while working, the weight of the worker is supported in the order of the safety belt, the safety belt fastening device 1, and the fence 100. Therefore, the worker is suspended from the safety belt, preventing a fall accident.

[0048] Furthermore, the clamping parts 31, 32 of the safety belt fastening device 1, together with the main body 10, clamp almost the entire circumference of the side of the handrail 101 (see Figure 4) to engage the safety belt fastening device 1 (main body 10) with the handrail 101. Therefore, even if the safety belt fastening device 1 itself rotates around the handrail 101 as it is pulled by the worker via the safety belt, the safety belt fastening device 1 will not come off the handrail 101.

[0049] In addition, because the fence 100 has multiple posts 103 spaced at regular intervals, when working using a conventional safety belt fastening device, when straddling the posts 103 to move, the safety belt must be detached from the safety belt fastening device and then attached to another safety belt fastening device, or the safety belt fastening device must be removed from the handrail and then straddled over the posts 103 and reattached to the handrail, which requires the user to change the hook of the safety belt.

[0050] However, when the safety belt attachment device 1 according to this embodiment moves in the forward direction and collides with the support pole 103, a force acts on the contact parts 315a, 315b of the clamping part 31 in the opening direction, and the arm parts 313a, 313b rotate around the fulcrum parts 314a, 314b (see FIG. 5). Therefore, the safety belt attachment device 1 can pass through the support pole 103 with the lower parts of the clamping parts 31, 32 open.

[0051] Furthermore, after the safety belt attachment device 1 has passed the support pole 103, the arm portions 313a and 313b return to their fixed positions due to the elastic force of the elastic body 3112 of the connecting portion 311 of the clamping portion 31 as described above. Therefore, after the safety belt attachment device 1 has passed the support pole 103, it automatically returns to a state in which it firmly clamps the handrail 101 so that it does not come off the handrail 101. Of course, these operations of the clamping portion 31 are also the same for the clamping portion 32. Therefore, the safety belt attachment device 1 does not require the work of changing the hook of the safety belt.

[0052] As mentioned above, the safety belt fastening device 1 may be pulled by a worker and rotate around the handrail 101, and at this time may collide with the post 103. However, since the safety belt fastening device 1 has guide parts 51, 52, even if the safety belt fastening device 1 (main body part 10) rotates around the handrail 101 and collides with the post 103, the inclined parts of the guide parts 51, 52 slide along the post 103 and move forward in the direction of travel, and the rotated safety belt fastening device 1 gradually returns to a horizontal state (see FIG. 4).

[0053] If the safety belt attachment device 1 were to rotate around the handrail 101 and collide with the support post 103, the safety belt attachment device 1 may get stuck at that point and hinder the smooth movement of the worker, so it is desirable to provide guide parts 51, 52 on the main body 10, as in this embodiment.

[0054] In addition, the safety belt attachment device 1 has the attachment part 20 provided approximately in the center of the main body part 10, a pair of clamping parts 31, 32 provided at two locations on either side of the attachment part 20, and the roller parts 41, 42 also provided at two locations on the outside of the clamping parts 31, 32, so that it is well balanced and will not unnecessarily rotate around the handrail 101 or come off the handrail 101, regardless of the direction in which the safety belt attachment device 1 moves.

[0055] The present embodiment described above is merely an example, and the design of each component can be appropriately modified without departing from the spirit of the present invention. For example, the elastic body is not limited to a coil spring, and a leaf spring, a resin spring, or the like may be used. Furthermore, the number of pairs of clamping portions and roller portions, the positions at which they are attached to the main body, and the like can also be modified as appropriate. [Industrial Applicability]

[0056] The present invention is a safety belt fastener that can be easily attached to a railing of a fence or the like, ensures sufficient safety, and does not require changing the work of fastening, so it can be used in a variety of locations and is industrially useful. [Explanation of symbols]

[0057] 1,1A Safety belt attachment 10 Main body 10a opening 10s Space to accommodate handrails 20 Mounting part 21 Holding part 22 Ring section 22a hole 31, 32 Pair of clamping parts 31a, 31b Clamping part 311 Connection section 3111 Connecting shaft 3112 Elastic body 312 Arm support 313a, 313b Arm section 314a,314b fulcrum part 315a,315b Contact part 3151a, 3151b Rotating body 3152a, 3152b Rotating body fixing part 316,326 Pair of operating parts 316a,316b Operation section 41,42 Roller section 411 Roller support frame 412 Lola 51,52 Guide section 511,521 Ribs 100 Fence 101 Handrail 102 Center rail 103 Post S1, S2, S3 rotation axis N Nut

Claims

1. A main body is attached to the rod-shaped body so as to be slidable along the extending direction of the rod-shaped body; An attachment portion provided on the main body portion to which a safety belt is attached; a pair of clamping portions provided on the main body portion, the clamping portions clamping and locking a lower end portion of the rod-shaped body to which the main body portion is attached; Equipped with The pair of clamping parts have, at their upper parts, a connecting part having an elastic body and connecting the pair of clamping parts, and at their lower parts, a contact part that contacts the clamped rod-shaped body to lock the main body to the rod-shaped body. Safety belt attachment.

2. The abutment portion is a sliding member that slides against the rod-shaped body or a rotating body.

2. A safety belt attachment device according to claim 1.

3. The pair of clamping portions are A pair of arms; an operating portion provided at an upper end of each of the pair of arms for contracting the elastic body to open lower portions of the pair of clamping portions; An arm support portion; a fulcrum portion that rotatably connects the pair of arms to the arm support portion; The abutment portion is provided on a lower portion of each of the pair of arms.

2. A safety belt attachment device according to claim 1.

4. The guide portion is provided at one end and the other end of the main body in the traveling direction, and the guide portion is inclined diagonally downward toward the inside when viewed from the front.

2. A safety belt attachment device according to claim 1.

5. The attachment portion is provided at approximately the center of the main body portion, The pair of clamping portions are provided at two locations on either side of the mounting portion. A safety belt attachment device according to any one of claims 1 to 4.

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