Hook Hanging Device

Abstract

To provide a hook hanging device capable of hanging a hook at the end of a lanyard in a fall prevention device without forming a hole unnecessary for a completed elevator. [Solution] A hook hanging device 100 for hanging a hook Hk at the end of a lanyard in a fall prevention device worn when working at the landing during elevator installation work, the hook hanging device 100 includes a longitudinal member 200 inserted into a wire entry hole 12 opened in a hoistway wall 14 to pull wiring from equipment installed on the landing side into the hoistway, a stopper member 300 attached to the hoistway side end of the longitudinal member 200 and abutting the hoistway inner wall 14a to prevent the longitudinal member 200 from falling off to the landing side, and a hook hanging member 400 attached to the exposed part on the landing side of the longitudinal member 200 and on which the hook Hk is hung, and is configured to be fixed to the hoistway wall 14.

Description

[Technical field]

[0001] The present invention relates to a hook attachment device, and more particularly to a device for attaching a hook at the end of a lanyard in a fall prevention device (formerly known as a "safety belt") worn when working at an elevator landing during elevator installation work. [Background technology]

[0002] Before the start of elevator installation work, the building only has the hoistway that was opened during construction work, and openings that connect to the hoistway and serve as landing entrances and exits on each floor. During elevator installation work, various types of work are done not only inside the hoistway, but also at the landings on each floor, i.e., near the openings.

[0003] For example, installation of jambs, door closers, and landing doors. In the above installation and other landing work, workers wear fall arrest equipment and hang the hook at the end of the lanyard on an appropriate facility or tool to prevent serious injury from falling into the elevator from the opening.

[0004] However, in the early stages of elevator installation work, there is no suitable equipment or fixture near the opening to hang the hook on. For this reason, for example, in the case of a building with a reinforced concrete structure (RC structure), an anchor is driven into the wall (outer wall of the elevator shaft) near the opening, a ring-shaped member is fixed to the tip of the anchor, and the hook is hung on the ring.

[0005] However, it is time-consuming to drive anchors into each landing at each floor and remove the anchors that are no longer needed after the designated landing work is completed. Also, the pilot holes drilled for driving the anchors are only needed for the landing work at that floor, and are no longer needed after the elevator is completed (after the designated landing work is completed).

[0006] Patent Document 1 and Patent Document 2 disclose a device for attaching a hook (safety belt hook device 30 (Fig. 1 and Fig. 2) in Patent Document 1, safety belt hook device 20 (Fig. 3) in Patent Document 2) that is provided at each landing on each floor. However, both devices are used during maintenance and inspection after the elevator is completed, and are installed on the jambs on three sides (

[0040] and Fig. 1 in Patent Document 1, and

[0041] and Fig. 2 in Patent Document 2).

[0007] ,

[0008] ) And, naturally, it cannot be used during the installation of the jambs, which is part of the landing work. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2016-050047 A [Patent Document 2] JP 2011-190076 A Summary of the Invention [Problem to be solved by the invention]

[0008] In view of the above-mentioned problems, the present invention aims to provide a hook hanging device that can hang a hook at the end of a lanyard of a fall prevention device worn when working at the elevator landing during elevator installation work, without drilling unnecessary holes for the completed elevator. [Means for solving the problem]

[0009] In order to achieve the above-mentioned object, the hook hanging device of the present invention is a hook hanging device for hanging a hook at the end of a lanyard in a fall arrest device worn when working at a landing during elevator installation work, and is characterized in that it includes a longitudinal member that is inserted into a wire entry hole opened in the hoistway wall to pull wiring from equipment installed on the landing side into the hoistway, a slip-out prevention member that is attached to the hoistway side end of the longitudinal member and abuts the hoistway inner wall to prevent the longitudinal member from slipping out towards the landing side, and a hook hanging member that is attached to the exposed part of the longitudinal member on the landing side and on which the hook is hung, and is configured to be fixed to the hoistway wall.

[0010] The anti-slip member is attached to the longitudinal member so as to be rotatable around the attachment point to the longitudinal member between an unfolded position in which it intersects with the longitudinal member in a T-shape, and a folded position in which it is aligned along the longitudinal direction of the longitudinal member, and in the folded position, the anti-slip member can be inserted, with the anti-slip member at the front, into the entry hole from the landing side until the entire anti-slip member protrudes into the elevator shaft, and in the unfolded position, it abuts against the inner wall of the elevator shaft.

[0011] Furthermore, the present invention is characterized in that a position change means is provided for changing the anti-slip member from the folded position to the deployed position when the entire anti-slip member is protruding into the elevator shaft in the folded position.

[0012] Furthermore, the position changing means is a first end side portion of the retaining member from the attachment portion to the first end. Mounting locationa first moment of force about the center is set to be greater than a second moment of force of the second end side portion up to the second end, and the first end side portion abuts against the longitudinal member from above, or the second end side portion abuts against the longitudinal member from below, thereby assuming the folded posture, and by rotating the longitudinal member half a turn about its axis from the folded posture, due to the magnitude relationship between the first moment and the second moment, the first end side portion rotates downward and the second end side portion rotates upward, thereby assuming the unfolded posture.

[0013] The longitudinal member further includes a main body portion to which the anti-slip member is attached, and an extension portion that is removably attached to the main body portion, and is characterized in that at least when inserted into the inlet hole, the extension portion is attached to the main body portion, and when fixed to the elevator shaft wall, the extension portion is detached from the main body portion for use. Effect of the Invention

[0014] The hook hanging device of the present invention is configured to be fixed to the hoistway wall by utilizing the above-mentioned line entry hole, so it can be used without drilling unnecessary holes in the completed elevator. [Brief description of the drawings]

[0015] [Figure 1] 1 is a front view showing a schematic configuration of a hook hanging device according to an embodiment. [Diagram 2] (a) is a front view of the anti-slip member, (b) is a plan view of the same, (c) is a front view of the main body, (d) is a right side view of the same, (e) is a plan view of the same, (f) is a front view of the weight portion, and (g) is a right side view of the same. [Diagram 3] 1(a) is a plan view of the tip portion of the hook hanging device, (b) is a cross-sectional view taken along line A-A in FIG. 1, and (c) is a cross-sectional view taken along line B-B in (b). (d) is a diagram showing the shape of a daruma hole in the hook hanging part. [Figure 4]11A to 11C are diagrams for explaining the operation of a position changing means for the retaining member in the above-mentioned hook hanging device. [Diagram 5] 11A to 11C are diagrams for explaining the operation of a position changing means for the retaining member in the above-mentioned hook hanging device. [Figure 6] (a) is a diagram of the opening that will become the elevator entrance / exit for the building under construction, viewed from the landing side toward the hoistway, (b) is an enlarged view of the entrance hole in the hoistway wall, and (c) is a cross-sectional view of line C-C in (b). [Figure 7] 4A to 4C are explanatory diagrams of a procedure for attaching the hook hanging device to a hoistway wall. [Figure 8] FIG. 13 is an explanatory diagram of a procedure for attaching the hook hanging device to the elevator shaft wall. [Figure 9] FIG. 13 is an explanatory diagram of a procedure for attaching the hook hanging device to the elevator shaft wall. [Figure 10] 10A to 10C are explanatory diagrams of a procedure for removing the hook hanging device from the hoistway wall. [Figure 11] 10A to 10C are explanatory diagrams of a procedure for removing the hook hanging device from the hoistway wall. [Figure 12] 1A and 1B are a front view and a left side view, respectively, of a hook hanging member according to a first modified example. [Figure 13] 13A is a front view, FIG. 13B is a plan view, and FIG. 13C is a left side view of a hook hanging member according to a second modified example. [Figure 14] 13 is an explanatory diagram of a method of using the hook hanging device of the third modified example. FIG. [Figure 15] 13 is an explanatory diagram of a method of using the hook hanging device of the third modified example. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, the hook hanging device according to the present invention will be described based on an embodiment with reference to the drawings. Fig. 1 shows a schematic configuration of a hook hanging device 100 according to an embodiment. Fig. 1 shows a state in which the hook hanging device 100 is carried. Note that the scales of the components in each drawing are not necessarily uniform.

[0017] The hook hanging device 100 is broadly composed of a longitudinal member 200, a retaining member 300, and a hook hanging member 400.

[0018] The longitudinal member 200 includes a main body 210 and an extension 220. The main body 210 is configured by connecting a rod bolt 211 and a cut bolt 212 with a long nut 213. On both sides of the long nut 213, and screwed into the threaded portion 211a of the rod bolt 211 and the cut bolt 212, respectively, are locking nuts 214, 215 for preventing the connection between the rod bolt 211 and the cut bolt 212 from loosening.

[0019] The extension 220 is made of a bar material, and one end portion is formed with a female thread portion 220a into which the cut bolt 212 is screwed. Reference numeral 102 denotes a locking nut. The other end portion of the extension 220 is also formed with a female thread portion 220b, into which an eyebolt 104 is screwed as a hanging device.

[0020] The retaining member 300 is attached to one end of the elongate member 200. A front view of the retaining member 300 is shown in Fig. 2(a) and a plan view of the same is shown in Fig. 2(b). The retaining member 300 includes a main body portion 310 and a weight portion 311. Both the main body portion 310 and the weight portion 311 are formed from a steel material.

[0021] A front view of the main body 310 is shown in Fig. 2(c), a right side view in Fig. 2(d), and a plan view in Fig. 2(e). The main body 310 has an overall groove shape with a U-shaped cross section. At one end, parts of both side walls of the groove are cut away, leaving only the bottom of the groove to form a rectangular tongue portion 310a.

[0022] The central side wall portions of the main body 310, excluding the tongue portion 310a, are formed with mountain-shaped portions 310b, 310c that protrude in an isosceles trapezoidal shape from the other side wall portions. The central side wall portions are also provided with holes 310d, 310e that penetrate in the thickness direction.

[0023] Figure 2(f) shows a front view of weight portion 311, and Figure 2(g) shows a right side view of the same. Weight portion 311 has a generally U-shaped cross section and is a groove shape that is shallower than main body portion 310. At one end, part of the bottom of the groove has been cut away, leaving only both side walls to form protrusions 311a and 311b.

[0024] Plummet 311 is joined to body 310 by welding with a portion of it overlapping body 310. Specifically, as shown in Figures 2(a) and 2(b), protrusions 311a and 311b of plummet 311 are inserted into the outsides of both side walls of body 310, and the bottom surface of plummet 311 is overlapped with tongue portion 310a of body 310, and spot welding is applied to the boundaries indicated by arrows (a) and (b) (weld marks are not shown).

[0025] The retaining member 300 having the above-mentioned configuration is attached to the tip portion of the elongate member 200 (rod bolt 211). Fig. 3(a) shows a plan view of the tip of the rod bolt 211 in the hook hanging device 100 and its vicinity.

[0026] 1 and 3(a), ring portion 211b at the end of rod bolt 211 is inserted into the longitudinal center of the groove in main body 310, and hinge pin 106, which has a flange at one end and a groove at the other end, is inserted into holes 310d, 310e (FIGS. 2(c) and 2(d)) of main body 310 with the hole in ring portion 211b communicating with these holes. A C-shaped retaining ring 108 is fitted into the groove of hinge pin 106 to prevent it from coming off.

[0027] As a result, retaining member 300 is attached to longitudinal member 200 so as to be rotatable about hinge pin 106 (attachment portion to longitudinal member 200), which is an attachment member. Since retaining member 300 is provided with weight portion 311 at one end, the axis of hinge pin 106 is in the horizontal direction, generating a difference in the moment of force (gravity) about the axis (attachment portion) between the side with weight portion 311 and the side without weight portion 311, with hinge pin 106 as the boundary.

[0028] Here, as shown in FIG. 1, in the anti-slip member 300, the portion from the hinge pin 106 (the attachment site to the longitudinal member 200) to the end on the side where the weight portion 311 is present will be referred to as the first end portion 300H, and the portion to the end on the side where the weight portion 311 is not present will be referred to as the second end portion 300L.

[0029] A difference occurs in the moment (hereinafter simply referred to as "moment") of the force (gravity) centered on the hinge pin 106 when the axis of the hinge pin 106 is in the horizontal direction between the first end side portion 300H and the second end side portion 300L due to the difference in their lengths, the presence or absence of the weight portion 311, etc. In other words, the moment of the first end side portion 300H is larger than that of the second end side portion 300L. The magnitudes of both moments vary depending on the rotation angle of the retaining member 300, but the above-mentioned relationship between the magnitudes remains unchanged.

[0030] By utilizing the difference in the moments, the hook hanging device 100 can be changed between an unfolded posture (FIGS. 1, 5(c), etc.) in which the retaining member 300 intersects with the longitudinal member 200 in a T-shape, and a folded posture (FIGS. 4(b), 4(c), etc.) in which the retaining member 300 is aligned along the length direction of the longitudinal member 200. In other words, the configuration that generates the difference in the moments functions as posture changing means for changing between the folded posture and the unfolded posture.

[0031] The operation of this position changing means will be described with reference to Figures 1, 4, and 5. The longitudinal member 200 is rotated half a turn about its axis (arrow T1) so that the first end portion 300H faces upward from the state in which the first end portion 300H faces downward with respect to the hinge pin 106 as shown in Figure 1. Then, depending on a slight difference in the angle of the retaining member 300 with respect to the axis of the hinge pin 106, the retaining member 300 rotates in the direction of arrow R1 or the direction of arrow R2 as shown in Figure 4(a).

[0032] When rotated in the direction of arrow R1, the first end portion 300H abuts against the longitudinal member 200 from above and assumes a folded position, as shown in Fig. 4(b). On the other hand, when rotated in the direction of arrow R2, the second end portion 300L abuts against the longitudinal member 200 from below and assumes a folded position, as shown in Fig. 4(c).

[0033] When the longitudinal member 200 is rotated half a turn around its axis (arrow T2) from the folded posture shown in FIG. 4(b), as shown in FIG. 5(a), due to the magnitude relationship between the moments about the hinge pin 106 of the first end side portion 300H and the second end side portion 300L, the first end side portion 300H rotates downward (arrow R3) and the second end side portion 300L rotates upward (arrow R4), resulting in the unfolded posture shown in FIG. 5(c).

[0034] Furthermore, even if the longitudinal member 200 is rotated half a turn around its axis (arrow T3) from the folded posture shown in FIG. 4(c), as shown in FIG. 5(b), due to the magnitude relationship between the moments about the hinge pin 106 of the first end side portion 300H and the second end side portion 300L, the first end side portion 300H rotates downward (arrow R6) and the second end side portion 300L rotates upward (arrow R5), resulting in the unfolded posture shown in FIG. 5(c).

[0035] Next, the hook hanging member 400 will be described with reference to Fig. 1, Fig. 3(b), Fig. 3(c), and Fig. 3(d). Fig. 3(b) is a cross-sectional view taken along line A-A in Fig. 1, and Fig. 3(c) is a cross-sectional view taken along line B-B in Fig. 3(b). Fig. 3(d) is a diagram showing the shape of a potbelly hole 411 formed in a bottom plate portion 410, which will be described later. Note that in Fig. 3(b), the illustration of members appearing behind the hook hanging member 400 is omitted.

[0036] The hook hanging member 400 is manufactured by bending a steel plate, etc., and includes a rectangular bottom plate portion 410 and side plate portions 420 and 430 which are bent at right angles from both long sides of the bottom plate portion 410, and has a U-shaped groove-like cross section.

[0037] Each of side plate portion 420 and side plate portion 430 has a circular hole formed in the thickness direction thereof, and said circular holes serve as hook hanging portion 421 and hook hanging portion 431 for hanging a hook as described later.

[0038] A potbelly hole 411 is formed in the thickness direction of the bottom plate portion 410. The potbelly hole 411 is composed of a circular portion 411a and an elongated hole portion 411b communicating with the circular portion 411a.

[0039] In FIG. 1, between side plate portion 420 and side plate portion 430 (not shown in FIG. 1), threadedly engaged with cut bolt 212 is a fixing nut 110 used to secure the hook hanging member to longitudinal member 200 during transportation and to secure hook hanging device 100 to the hoistway wall 14 (FIG. 6), as described below.

[0040] The hook hanging device 100 having the above-mentioned configuration is used by being fixed to an elevator shaft wall. Fig. 6(a) is a view of an opening 10 that will be an elevator hall entrance / exit, viewed from the hall side toward the elevator shaft, during construction of a reinforced concrete (RC) building, Fig. 6(b) is an enlarged view of a line entrance hole 12 opened in an elevator shaft wall 14, and Fig. 6(c) is a cross-sectional view of line C-C in Fig. 6(b).

[0041] In elevator installation work, at the time of starting work at the landing, as described above, the hoistway opened in the construction work and the opening 10 that communicates with the hoistway and serves as the landing entrance / exit on each floor are already opened. In addition, a line entrance hole 12, which is a through hole, is opened in the hoistway wall 14 for pulling wiring from devices such as a call button device installed on the landing side into the hoistway. The diameter of the line entrance hole 12 is, for example, 40 mm. The hook hanging device 100 is fixed to the hoistway wall 14 using the line entrance hole 12 for use.

[0042] Next, a procedure for attaching (fixing) the hook hanging device 100 to the hoistway wall 14 and a procedure for removing it will be described with reference to FIG. 1 and FIGS.

[0043] First, the hook hanging member 400 is removed from the longitudinal member 200. Specifically, from the state shown in Fig. 1, the fixing nut 110 is loosened as shown in Fig. 7(a), the hook hanging member 400 is lifted, and the hook hanging member 400 is pulled out from the longitudinal member 200 through the circular portion 411a of the potbelly hole 411 (Figs. 3(b) and 3(d)) (arrow A).

[0044] The longitudinal member 200 is rotated half a turn around its axis (arrow B) to assume a folded position in which the first end side portion 300H abuts the longitudinal member 200 from above, as shown in Figure 7 (b), and the extension portion 220 of the longitudinal member 200 is held and inserted into the entrance hole 12 from the landing side, with the anti-slip member 300 at the front (arrow C).

[0045] When the long member 200 is inserted until the entirety of the anti-slip member 300 protrudes (enters) into the elevator shaft, the long member 200 is rotated half a turn around its axis (arrow D) to bring the anti-slip member 300 into the deployed position (arrow E) as shown in Figure 7(c).

[0046] The long member 200 is pulled toward the front (toward the landing) so that the retaining member 300 comes into contact with the hoistway inner wall 14a (arrow F). Then, the hook hanging member 400 is fitted to the long member 200. Specifically, after the long member 200 is passed through the circular portion 411a (FIGS. 3(b) and 3(d)) of the potbelly hole 411, the hook hanging member 400 is lowered so that the long member 200 enters the elongated hole portion 411b (FIGS. 3(b) and 3(d)) (arrow G).

[0047] With the retaining member 300 in contact with the hoistway inner wall 14a and the hook hanging member 400 in contact with the hoistway outer wall 14b, the fixing nut 110 is tightened (arrow H). Then, the extension part 220 of the longitudinal member is removed from the main body part 210 (arrow I). By removing it, the protruding length from the hoistway outer wall 14b can be shortened, thereby preventing work clothes and the like from getting caught during work at the landing.

[0048] By the above-mentioned procedure, as shown in Figure 8 (c), the hook hanging device 100 is fixed to the hoistway wall 14, and includes the longitudinal member 200 to be inserted into the inlet hole 12, the anti-slip member 300 attached to the hoistway side end of the longitudinal member 200 and abutting the hoistway inner wall 14a to prevent the longitudinal member 200 from slipping out towards the landing side, and the hook hanging member 400 attached to the exposed portion of the longitudinal member 200 on the landing side.

[0049] The hook hanging device 100 (Figure 9(a)) fixed to the elevator wall 14 is used by hanging a hook Hk at the end of a lanyard of a fall arrest device worn by a worker when working at the landing on either or both of the hook hanging portion 421 and the hook hanging portion 431 (Figure 9(b)).

[0050] The removed extension part 220 can be hung by passing the ring part of the eye bolt 104 provided at one end of the extension part 220 through the cut bolt 212 of the main body part 210 (Figures 9(c) and 9(d)), thereby preventing the extension part 220 from being lost during work at the landing.

[0051] Next, a description will be given of a procedure for removing the hook hanging device 100 from the hoistway wall 14. First, the extension portion 220 is attached to the main body portion 210 (FIG. 10(a)).

[0052] The fixing nut 110 is loosened and the hook hanging member 410 is removed from the elongate member 200 (arrow J in FIG. 10(b)).

[0053] Holding the extension 220, the entire hook hanging device 100 is pushed toward the hoistway (arrow K in FIG. 10(c)), and the extension 220 (longitudinal member 200) is rotated a half turn about its axis (arrow L in FIG. 10(c)).

[0054] Then, the retaining member 300 rotates around the hinge pin 106 (attachment site) in the clockwise direction indicated by the arrow M in Fig. 11(a) or the counterclockwise direction indicated by the arrow N in Fig. 11(b), and assumes a folded posture, with the first end portion 300H abutting against the longitudinal member 200 from above (Fig. 11(a)) or the second end portion 300L abutting against the longitudinal member 200 from below (Fig. 11(b)). Whether or not the retaining member 300 assumes the folded posture can be confirmed by the sensation when the retaining member 300 abuts against the longitudinal member 200.

[0055] While in the folded position, the extension 220 is pulled forward (towards the landing) (arrow P) to remove the entire hooking device 100 from the line entrance hole 12. Then, the hooking member 400 is attached again to the elongated member 200, making it portable (FIG. 11(c)).

[0056] As described above, the hook hanging device 100 of the embodiment includes a longitudinal member 200 that is inserted into the wire entry hole 12 opened in the hoistway wall to pull wiring from equipment installed on the landing side into the hoistway, a fall prevention member 300 that is attached to the hoistway side end of the longitudinal member 200 and abuts against the hoistway inner wall 14a to prevent the longitudinal member 200 from falling off to the landing side, and a hook hanging member 400 that is attached to the exposed part on the landing side of the longitudinal member 200 and to which a hook Hk at the end of the lanyard of the fall arrest device is hung, and is configured to be fixed to the hoistway wall 14.

[0057] In other words, the hook hanging device 100 is configured to be fixed to the elevator shaft wall 14 by utilizing the above-mentioned line entry hole 12, and is therefore a hook hanging device that can be used without drilling unnecessary holes in the completed elevator.

[0058] In addition, in the hook hanging device 100 according to the embodiment, the anti-slip member 300 is attached to the longitudinal member 200 so as to be rotatable between an unfolded position in which the anti-slip member 300 intersects with the longitudinal member 200 in a T-shape around the hinge pin 106, which is the attachment point to the longitudinal member 200, and a folded position in which the anti-slip member 300 is aligned along the longitudinal direction of the longitudinal member 200. In the folded position, the anti-slip member 300 can be inserted into the inlet hole 12 from the landing side until the entire anti-slip member 300 protrudes into the hoistway, and in the unfolded position, the anti-slip member 300 abuts against the hoistway inner wall 14a. In the folded position, with the entire anti-slip member 300 protruding into the hoistway, the hook hanging device 100 has a position change means for changing the anti-slip member 300 from the folded position to the unfolded position.

[0059] This allows a worker to attach the hook attachment device 100 to the hoistway wall 14 while remaining on the landing side, for example, without leaning into the hoistway.

[0060] Furthermore, the posture change means is configured such that a first moment of force (gravity) centered on hinge pin 106 of first end side portion 300H of anti-slip member 300 from hinge pin 106 to the first end is set to be greater than a second moment of force (gravity) of second end side portion 300L to the second end, and the folded posture is achieved by first end side portion 300H abutting against longitudinal member 200 from above, or by second end side portion 300L abutting against longitudinal member 200 from below, and from the folded posture, by rotating longitudinal member 200 half a turn about its axis, due to the magnitude relationship between the first moment and the second moment, first end side portion 300H rotates downward and second end side portion 300L rotates upward to achieve the unfolded posture.

[0061] As a result, the above-described simple configuration can be used to change the posture from the folded posture to the unfolded posture without providing a special mechanism.

[0062] Furthermore, the longitudinal member 200 includes a main body portion 210 to which the anti-slip member 300 is attached, and an extension portion 220 provided so as to be attachable and detachable to the main body portion 210, and at least when inserted into the inlet hole 12, the extension portion 220 is attached to the main body portion 210, and when fixed to the elevator shaft wall 14, the extension portion 220 is removed and used.

[0063] This allows the length of protrusion from the outer wall 14b of the elevator shaft to be shortened, thereby preventing work clothes, etc. from getting caught during work at the landing.

[0064] Up to this point, the hook hanging device according to the present invention has been described based on the embodiment, but the present invention is of course not limited to the above-mentioned embodiment, and can be modified as follows, for example.

[0065] (Variation 1) In the above embodiment, in the hook hanging member 400, the hook hanging portion 421 and the hook hanging portion 431 are provided on the side plate portion 420 and the side plate portion 430, respectively, but the present invention is not limited to this and may be configured as follows.

[0066] Fig. 12(a) shows a front view of a hook hanging member 800 in a hook hanging device according to Modification 1, and Fig. 12(b) shows a left side view of the same. The hook hanging member 800 is made by bending a substantially rectangular steel plate into a V-shape. That is, the hook hanging member 800 has a base plate portion 860 and a slanted plate portion 870 extending obliquely from one short side of the base plate portion 860.

[0067] The base plate portion 860 is provided with a potbelly hole 861, which is similar to the potbelly hole 411 of the hook hanging member 400 (FIG. 3(d)) and is made up of a circular portion 861a and an elongated hole portion 861b.

[0068] The swash plate portion 870 has a circular hole formed in its thickness direction, and the circular hole serves as a hook hanging portion 871 of the hook hanging member 800.

[0069] (Variation 2) In the above embodiment, in the hook hanging member 400, the portions where the hook Hk is actually hung are formed by opening circular holes in each of the side plate portions 420 and 430, and these are designated as hook hanging portions 421 and 431, respectively, but this is not limited to the above and may be configured as follows.

[0070] Fig. 13(a) shows a front view of a hook hanging member 500 in a hook hanging device according to Modification 2, Fig. 13(b) shows a plan view thereof, and Fig. 13(c) shows a left side view thereof. In the hook hanging member 500, instead of the hook hanging portions 421 and 431 of the above embodiment, a bar material is hung between the side plate portions 520 and 530, and this serves as the hook hanging portion 550.

[0071] Both ends of the hook hanging portion 550 (bar material) are fixed to the side plate portions 520 and 530, respectively, by welding or the like. Other than the above, the hook hanging member 500 according to the second modified example has the same configuration as the hook hanging member 400 of the above embodiment. Therefore, the components of the hook hanging member 500 are given reference numbers in the 500s, and the last two digits are given the reference numbers of the corresponding components in the hook hanging member 400, and the explanations thereof will be omitted.

[0072] (Variation 3) Modification 3 relates to the configuration of the position changing means of the retaining member. A hook hanging device 600 according to Modification 3 will be described with reference to Figures 14 and 15. In Figures 14 and 15, the same components as those in the hook hanging member 100 according to the above embodiment are given the same reference numerals, and their description will be omitted or will be mentioned only as appropriate. The following description will focus on the differences.

[0073] In the above embodiment, the anti-slip member 300 has a difference in moment at both ends separated by the attachment point (hinge pin 106) to the longitudinal member 200. However, in the third modification, as shown in FIG. 14(a), the two sides of the attachment point (hinge pin 106) are symmetrical so that there is no difference in moment.

[0074] A hole 710a is formed near the angled portion 710 of the retaining member 700 in the third modified example. One end of a flexible wire 720 that is slightly longer than the longitudinal member 200 is fixed to the hole 710a.

[0075] When attaching the hook hanging device 600 to the elevator shaft wall 14, first, as shown in Fig. 14(b), the retaining member 700 is folded down with fingers or the like. In this state, the extension 220 is grasped and the retaining member 700 is inserted into the entrance hole 12 from the hall side with the retaining member 700 at the front (arrow Q).

[0076] With the entirety of the retaining member 700 inserted into the hoistway, the extension 220 (longitudinal member 200) is rotated around its axis with some force (arrow R). Then, centrifugal force acts on the retaining member 700, causing it to open in a direction intersecting with the direction along the longitudinal member 200 (arrows S and T). In this state, the extension 220 is pulled forward (toward the landing) and the retaining member 700 is brought into contact with the hoistway inner wall 14a. As a result, the retaining member 700 comes into contact with the hoistway inner wall 14a in a deployed position intersecting with the longitudinal member 200 in a T-shape (not shown). The subsequent installation procedure is the same as in the first embodiment.

[0077] When removing the hook hanging device 600 from the hoistway wall 14, the extension 220 is held and the hook hanging device 600 is pushed toward the hoistway (arrow U in FIG. 15(a)). Then, the wire 720 is pulled toward the user (toward the landing) (arrow V). Then, regardless of the angle at which the anti-slip member 700 is at relative to the longitudinal member 200, it will rotate about the axis of the hinge pin 106 and assume the folded position (FIGS. 15(b) and 15(c)). The procedure thereafter is the same as in embodiment 1.

[0078] The hook hanging device according to the present invention has been described above based on an embodiment and its modified examples. However, the present invention is not limited to the above-described embodiment, and can be, for example, in the following form.

[0079] (1) The position changing means for changing the anti-slip member between the folded position and the unfolded position may be, for example, as follows instead of the above. A torsion coil spring (not shown) is used instead of wire 720 of modification example 3. Although the torsion coil spring is not shown, a case where it is assumed that a torsion coil spring is used will be described with reference to FIG. 14.

[0080] The coil portion of the torsion coil spring is passed through the hinge pin 106. One arm of the torsion coil spring is hooked onto the main body 210 of the elongate member 200, and the other arm is brought into contact with the groove of the retaining member 300. The torsion coil spring is designed to exert a biasing force (restoring force) that causes the retaining member to assume the folded position, and the restoring force is weak as described below.

[0081] The biasing force (restoring force) of the torsion coil spring causes the retaining member 700 to assume the folded posture as shown in FIG. 14(b). To change from the folded posture to the deployed posture, as shown in FIG. 14(c), the extension 220 (longitudinal member 200) is vigorously rotated about its axis while the entire retaining member 700 is inserted into the hoistway. Then, the centrifugal force acting on the retaining member 700 exceeds the biasing force of the torsion coil spring, and the retaining member 700 opens in a direction toward the deployed posture. The extension 220 is quickly pulled forward (toward the landing), and the retaining member 700 is brought into contact with the hoistway inner wall 14a, and then pulled further to assume the deployed posture. The subsequent installation procedures are the same as those of the first embodiment and the third modified example.

[0082] When removing the hook hanging device 600 from the hoistway wall 14, the extension 220 is held and the hook hanging device 600 is pushed toward the hoistway (FIG. 15(a), arrow U). Then, the restoring force of the torsion coil spring causes the retaining member 700 to change from the unfolded position to the folded position (FIGS. 15(b), 15(c)). The procedure thereafter is the same as in the first embodiment and the third modification.

[0083] (2) In the above embodiment, the hook hanging member 400 is used as one of the members for fixing the entire hook hanging device 100 to the elevator shaft wall 14. However, the present invention is not limited to this and may be configured as follows.

[0084] For example, a metal disk (not shown) may be used instead of the hook hanging member 400 as a member for fixing the entire hook hanging device 100 to the elevator shaft wall 14. A potbelly hole 411 is opened in the center of the metal disk.

[0085] Then, with the metal disk in contact with the hoistway outer wall 14b, the fixing nut 110 is tightened to fix the entire hook hanging device 100 to the hoistway wall 14. In this case, the hook hanging member 400 is provided with a pair of nuts screwed onto the cut bolts 212 on both sides of the bottom plate portion 410, and the bottom plate portion 410 is sandwiched between the pair of nuts, thereby attaching (fixing) it to the exposed portion on the landing side of the longitudinal member 200. [Industrial Applicability]

[0086] INDUSTRIAL APPLICABILITY The hook hanging device of the present invention can be suitably used as a device for hanging the hook at the end of a lanyard in a fall prevention device worn when working at an elevator landing during elevator installation work. [Explanation of symbols]

[0087] 100, 600 Hook Hanging Device 200 Longitudinal members 300, 700 Anti-slip material 400, 500, 800 Hook mounting parts

Claims

1. A hook hook for attaching the hook at the end of a lanyard in a fall prevention device worn during elevator installation work, A longitudinal member that is inserted into a wire entry hole that is opened in the hoistway wall for pulling wiring from equipment provided on the landing side into the hoistway; A retaining member that is attached to the hoistway side end of the longitudinal member and abuts against an inner wall of the hoistway to prevent the longitudinal member from slipping out toward the landing side; A hook hanging member attached to the landing side exposed portion of the longitudinal member and to which the hook is hung; Including, A hook hanging device configured to be fixed to the hoistway wall.

2. the anti-slip member is attached to the longitudinal member so as to be rotatable around an attachment portion to the longitudinal member between an unfolded position in which the anti-slip member intersects with the longitudinal member in a T-shape and a folded position along the longitudinal direction of the longitudinal member, The hook hanging device as described in claim 1, characterized in that, in the folded position, the anti-slip member can be inserted into the entry hole starting from the landing side until the entire anti-slip member protrudes into the elevator shaft, and in the unfolded position, it abuts against the inner wall of the elevator shaft.

3. The hook hanging device according to claim 2, further comprising a position change means for changing the anti-slip member from the folded position to the unfolded position when the anti-slip member is in the folded position and entirely protruding into the elevator shaft.

4. The attitude changing means is a first moment of force about the attachment portion of the first end portion of the retaining member from the attachment portion to the first end is set to be larger than a second moment of force about the second end portion of the retaining member to the second end, The folded position is achieved by the first end portion abutting against the longitudinal member from above, or the second end portion abutting against the longitudinal member from below, The hook hanging device according to claim 3, characterized in that, by rotating the longitudinal member half a turn about its axis from the folded position, due to the magnitude relationship between the first moment and the second moment, the first end portion rotates downward and the second end portion rotates upward to assume the unfolded position.

5. The longitudinal member includes a main body to which the retaining member is attached, and an extension portion provided so as to be removably attached to the main body, At least when the wire is inserted into the wire entrance hole, the extension is attached to the main body, The hooking tool according to any one of claims 1 to 4, characterized in that when the hooking tool is fixed to the elevator shaft wall, the extension portion is detached from the main body portion for use.

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