JPS5967972A - Falling roller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a descending roller used when a person descends from a high place using a rope or the like.

When a fire breaks out on a high floor of a high-rise building, etc., a descending loaf with a rope wrapped around it is used to rescue people on the high floor and move them to a safe place. Conventional lowering rollers have the disadvantage that the rope must be pulled with a strong force to stop the rotation of the loaf during lowering.

In view of the above, an object of the present invention is to provide a descending roller that can be stopped at a desired position extremely easily and safely without the need to pull the rope with strong force when descending from a high place using the entire rope. That is.

Next, the present invention will be explained based on embodiments shown in the drawings.

In FIGS. 1 and 2, the support shaft 1 has threaded portions la at both ends.
A cylindrical sleeve 2, which is shorter than the support shaft 1, is loosely fitted onto the support shaft 1. The rope body 6 has an outer tube 4 having approximately the same length as the sleeve 2, and an inner tube 5 that is shorter in length and smaller in diameter than the outer tube 4, and the inner tube 5 is the outer tube. It is connected to the center of the inside of 4 by a flange-shaped connecting plate 6. The inner tube 5 of the rope body 6 is loosely fitted to the outside of the sleeve 2. Here, the outer cylinder 4 has a ν-shaped recess 4a formed on its outer periphery in order to wrap around the rope R shown in FIG. The outer diameter is smaller. Further, on the inner circumferential surface of both hole diameter portions 4 b, 4 b of the outer cylinder 4, there is a conical concave surface O 7 that tapers from the outer surface of both hole diameter portions 4 b, 4 b toward the center. It is formed.

The brake member 8 has a cylindrical portion 2 that is loosely fitted into the sleeve 2, and a flange-shaped disk portion 10 formed on one side of the cylindrical portion 9. Here, the inner and outer diameters of the cylindrical portion 9 of the brake member 8 are approximately equal to the inner and outer diameters of the inner tube 5 of the rope tube 6, respectively.

The disc part 10 of the brake member 8 is provided with a cylindrical cam cylinder 11 protruding from the surface of the disc part 10 in a direction opposite to the cylindrical part 9 on the outer peripheral side of the surface opposite to the cylindrical part 9. There is. A conical surface 10a that is pressed against the conical concave surface 7 of the outer tube 4 is formed on the outer peripheral portion of the disk portion 10 on the opposite side from the cam tube 11. A friction plate made of fiberboard is provided on the conical surface 10a of the disc portion 10 in order to increase the frictional force generated between the conical surface 10a and the conical concave surface 7 of the outer cylinder 4 when the conical surface 10a is pressed against the conical concave surface 7 of the outer cylinder 4. 16 is attached to the right. The cam cylinder 11 of the brake member 8 has two U-shaped cam grooves 12, 12A formed at a pitch smaller than 90 degrees in the radial direction.
(See Figure 2).

Cams tIIt12 and 12A have cam surfaces 1 inclined to one side.
2a, and a cam surface 12b inclined in the opposite direction to the cam surface 12&.

A rope trunk 6 loosely fitted into a sleeve 2 fitted onto a support shaft 1
To assemble the pair of brake members 8, 8, after fitting the thrust bearing 14 and compression spring 15 into the cylindrical portion 9 of each brake member 8, insert each brake member 8, 8 from both sides of the rope body 6. The cylindrical part 9.9 is inserted into the Onu Leap 2. Next, remove the inner washer 1 from the image side of the sleeve 2.
6. Insert the Nubesa 17 and the outer washer 18 into the spindle 1 in this order, and screw them onto the threaded portions 1a at both ends of the spindle 1) 19.19
Tighten each.

The lobe body 6 attached to the support shaft 1 as described above
Each brake member 8, 8 is pressed by a compression spring 15 located between the connecting plate 6 of the rope body 6 and the thrust bearing 14, and the disc portion 10 of the brake member 8, 8 is pressed against the inner washer 16. are in contact.

For this reason, each of the four conical walls 7 of the outer cylinder 4 of the rope body 6 is separated from each of the friction plates 1,5,13 of both brake members 8, 8 (see FIG. 1).

As shown in FIG. 6, the rope guide 20 includes a round bar-shaped guide portion 21 curved into an approximately n-shape, and a disk welded to parallel cam push portions 21 a, 21 & on the open side of this guide portion 21. It has a shaped mounting portion 22.22. Each mounting portion 22 is provided with a hole 22a into which the Nuvasa 17 is inserted. Further, a guide rod 26 for regulating the movement of the rope R wound around the rope body 6 is welded to the center of the guide portion 21.

The two rope guides 20 formed as described above have their attachment parts 22 overlapped alternately, and the nut 19 and the outer washer 18 on both sides are attached to the nut 17 of the support shaft 1 from which the outer washer 18 has been removed. '17, the holes 22a- of each mounting portion 22 are inserted into the holes 22a- to be mounted. In this way, the two rope guides 20 attached to the support shaft 1 are arranged as shown in FIGS. 4 and 5.
As shown in the figure, the cam pushing parts 21L and 21a of the guide part 21 following the respective mounting parts 22 are connected to the brake members 8 on both sides.
, 8 are located in the respective cam grooves 12.12APJ.

Spacer 1 Otsu 17 further includes both rope guides 20.
Each of the 20 overlapping attachments $ 22. On the outside of 22, there is a round bar-shaped belt attachment bracket 240 that is curved in an n-shape, and disk-shaped attachment parts 25° 25 on both open end sides are used for this attachment. It is loosely fitted into the holes 25a and 25ai provided in the portion 25.25.

In this way, the belt mounting bracket 24 is attached to Nubesa 17.17.
After fitting and pressing the mounting portion 25 of the
, 1a, respectively, and tighten the nuts 19 and 19 respectively.

An oval ring-shaped belt loop fitting 26 is welded to the belt mounting fitting 24 on the outside of the center of the curved portion thereof.

As described above, by attaching the rope trunk 6.2 brake members 8, 8.2 rope guides 20.20, and the belt mounting bracket 24 to the support shaft 1 into which the sleeve 2 is loosely fitted. A lowering roller 27 is formed.

Next, the operation of this embodiment will be explained.

The rope R is wound once around the recess 4a of the outer cylinder 4 of the rope body 6. In this way, as shown in FIG. 4, the rope R wound around the rope body 6 is wound so that the fc portion (hereinafter referred to as the center portion) is connected to the guide rod 23 of the upper rope guide 20 and the lower side. and the guide rod 26 of the rope guide 20. Further, the upper part R1 side of the rope R is located on the opposite side (left side in the figure) from the center of the rope R with respect to the guide rod 26 of the upper opening to the guide 20. On the other hand, the lower part R2 side of the rope R is located on the opposite side (the right side in the figure) from the center with respect to the guide bar 23 of the lower rope guide 20. When the upper end of the rope R on the upper R1 side is attached to the upper layer of the high-rise @dyed fabric (not shown), the lowering roller 27 is suspended from the rope R. Since the weight of the person is applied to the spindle 1 via the belt mounting bracket 24,
The support shaft 1 tries to descend. The load applied to the support shaft 1 is transmitted from the sleeve 2 to the rope trunk 6b. In this case, the brake members 8, 8 pressed by the compression springs 15, 15 on both sides
is apart from the rope body 6, so the rope body 6 rotates iJ
is in a capable state. Therefore, the lobe body 6 is rotated by the rope R many times and descends. When a person pulls down the lower part R2 of the rope R during descent, the lower rope guide 2D is rotated clockwise by the lower rope R2 and the upper rope guide 20 is rotated by the upper rope R1 in FIG. It can be rotated counterclockwise. As a result, the cam pushing parts 21a21a on both sides of the upper rope guide 20 are rotated upward, and the upper cams tkij of each cam #It12 above the brake members 8, 8 on both sides are rotated upward.
2a, and the cam pushing parts 21-L and 21a on both sides of the lower rope guide 20 are rotated downward, and the lower cam grooves 12b of the lower cam grooves 12A of the brake members 8 and 8 on both sides are rotated downward. Press.

As described above, each rope guide 20 has a counter-pushing force against each other.
Each brake member 8 is connected to a rope B.
Against the biasing force of the compression spring 15 acting in the pushing direction from the rope body 6, a component force is generated that presses both brake members 8. When pressed, each friction plate 13, 13 of the brake members 8, 8 is pressed against the corresponding conical concave surface 7 of the rope body 3, stopping the rotation of the rope body 6. When the rotation of the rope body 6 stops, the lowering of the lowering loaf 27 also stops.

In this embodiment, in order to stop the descending loaf 27, a large force is not required to pull down the lower rope R2. Furthermore, when descending, by adjusting the pulling force of the lower rope R2 and appropriately adjusting the pressing force of the friction plates 16.degree. 16, the descending speed can be kept constant regardless of the size of the body weight.

To further descend using the descending roller 27 that has stopped as described above, loosen the grip of the lower rope R2 and press the cam grooves 12 of the brake members 8, 8 and each rope guide 20 It is sufficient to release the engagement with the parallel portion 21a.

Next, after the descending roller 27 has reached the descending end, if the descending roller 27 is to be used again, the descending roller 27 should be
After pulling up the rope 7 onto the rope R, the descending end of the rope R is attached to the upper part of a high-rise building, etc., and the descending roller 27 can be used again.

As described above, the present invention includes a rope body having an inner tube and an outer tube, the inner tube being loosely fitted to a support shaft, a conical surface that can be pressed against the conical concave surfaces on both sides of the rope body, and a predetermined angle. A pair of brake members, each having a conical surface with two cam grooves formed in the rearward direction and a cam cylinder protruding in the opposite direction, are loosely fitted from both sides of the rope body to the support shaft, and both brake members. A compression spring biases the rope in the direction of pushing it out from the rope body, and a cam pushing part and a mounting part are provided on the parallel open end side of the curved rod-shaped guide part. A pair of rope guides are fitted, and each cam push part is located in each cam groove of the brake member, and a mounting part formed on the open parallel end of the curved rod-shaped member is connected to the mounting part of the rope guide. Because the lowering row is configured with a belt mounting bracket that is swingably attached to the spindle on the outside, the upper end of the rope wound around the rope body of this roller is stopped and the lower side is When pulled, the pair of rope guides are rotated in opposite directions, and the cam push portions of each rope guide press the brake members on both sides against the rope body, pressing the conical surface of the brake member against the concave concave surface of the rope body. ,
Stop the rotation of the rope body. In this case, the brake member can be pressed against the rope body by simply pulling the lower side of the rope with a small force, so when descending from a high place using a rope, this descending roller can be used to descend safely and reliably. Furthermore, since it is small, even children can use it.

[Brief explanation of drawings]

The figures show one embodiment of this investigation, with Fig. 1 being a longitudinal sectional view of the lowering roller (however, the rope guide and belt mounting bracket are not shown), Fig. 2 being a perspective view of the brake member, and Fig.
The figure shows the combination of a pair of rope guides, and Figure 4 shows the front view of the width of the rope wrapped around the descending roller.
, FIG. 5 is a side view of FIG. 4, and FIG. 6 is a front view of the belt mounting bracket. 1... Support shaft 6... Lobe body 4...
Outer cylinder 4a...Concave part 4b...Large diameter part 5...Inner cylinder 7...Conical concave surface 8...Brake member 10a...Circle
Conical surface 11...Cam cylinder 12, 12A =
・Cam m 12a, 12b =・force A 15
... Compression spring 20 ... Rope guide 21a
...Cam push part 22...Mounting part 24...Pet mounting bracket 27...Loaf exit for lowering
Patent Attorney Yasuyo Yamamoto Patent Attorney Oka 1) Hidehiko Figure 1 Figure 21 Figure 3 Figure 4

Claims (1)

[Claims] It has an outer cylinder having a large diameter part shaped like a brim at both ends, and an inner cylinder which is installed concentrically inside the outer cylinder and loosely fitted to the support shaft. A rope body having a concave concave surface formed on the circumferential surface, a conical surface that can be pressed against the conical concave surface of the rope body, and two cam grooves that protrude in the opposite direction of the conical surface and are formed in the radial direction at a predetermined angle. a pair of brake members each having a curved cam cylinder and loosely fitted onto the support shaft from both sides of the rope body; a compression spring provided within the rope body to bias the brake member in a direction to push the brake member out of the rope body; The rod-shaped guide part has a cam push part and a mounting part on the parallel open end side, and the mounting parts at both ends are loosely fitted to the support shaft on the outside of the brake member, and each cam push part is connected to each cam of the brake member. A pair of rope guides located in the groove and a mounting part formed at the parallel end of the open end of the curved rod-shaped member are mounted on a support shaft on the outside of the mounting part of the rope guide for easy movement. When the pair of rope guides receives a force in the direction of opening each other due to the rope wound around the belt mounting bracket and the rope trunk, the cam pushing part of the rope guide presses the cam groove part of the brake member. A descending loaf characterized in that a brake member is fixed to a rope body.