JPH02191470A - Manually slow-lowering device - Google Patents

Abstract

PURPOSE:To contrive the subject device to be made small and light, by a method wherein a friction disk with a large friction coefficient is laid between a drum and a supporting member, and rolling members are provided between a hand-revolved member and the rolling member, and through rolling contact the braking force generated by the weight of a human body is released by hand. CONSTITUTION:Supporting members 2, 6 are connected to a supporting frame 13, and its frame is fastened to a human body with belts. Since the top end of a rope 4 wound around a drum 3 is connected on the drum 3, the drum is revolved when the rope is unwound by the weight of the human body. At this time, since the drum is depressed on a friction disk 23 through a screw 24 of its clutch, it is automatically fastened and braking force is applied to it. Automatic fastening is released in proportion to turning of a hand-revolved member 11, and the drum is revolved. Because of both the rolling contact between the supporting member and rolling members 20 and carbonic graphite coating on the surface of the screw 24, the hand-revolved member 11 can be turned with small torque.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is a gradual lowering device for safely lowering a person from a height to the ground, and in order to make it easier to carry, the device is simplified and lightened by reducing the number of parts. The aircraft is lowered manually to increase safety.

<Prior art> Portable slow descent devices use friction using springs to adjust speed.
Many types have been devised, including ones that utilize rope friction, viscous resistance, centrifugal governors, air pumps, and oil pump squeeze resistance, but all of them have many parts, are complex, large, and too heavy to carry, or are not safe. It lacked functionality and had problems in practical application.

Furthermore, in reality, it is often difficult to escape due to exposure to toxic gases, carbon oxides, smoke, etc., and a slow descent device alone is not sufficient.

<Problems to be solved by the invention> There is a strong demand for a smaller and lighter product to make it easier to carry when traveling, etc., as well as countermeasures against toxic gases that are always generated in building fires. It must have a simple structure that is not affected by the environment inside or during storage.

Means for Solving Problems> The present invention connects a drum wrapped around a descending rope to the body, fixes the end of the rope at a high place, suspends the person,
This is a slow descent device that allows a rope to be unwound from a drum at any safe speed, and in order to adjust the rotational speed of the drum, the torque of the drum generated by the tension of the rope is applied to the drum and a manually rotating member by threading the drum. By aligning the drum and the manual rotating member, the supporting member connected to the body interposed between the drum and the manually rotating member is tightened, and the frictional force acts as a braking force.
The drum rotates by the amount that the manual rotation member is turned, and the robe is unwound and the body is lowered.However, since the screw is tightened by the body weight and the manual rotation member is crimped, it is difficult to release it. Since a return torque close to the time required is required, a large amount of force is required.

As a means for reducing the return torque, a rolling element is interposed between the manually rotating member and the support member to convert sliding friction into rolling friction, thereby reducing the coefficient of friction to 1/40th. If the frictional force of the screw is also reduced by coating with a solid lubricant, the return torque can be further reduced, and it is even better to use a ball screw with rolling elements interposed on the screw surface. Also, since this structure consists of a clutch and a screw, the number of parts is small and the center is hollow, reducing weight and at the same time making it possible to store auxiliary equipment for emergency evacuation to protect against toxic gas, etc. , which provides a composite evacuation device.

<Function> In the present invention, the torque due to the body weight is converted into axial force and acts as a braking force, but in order to control the speed of the drum at an appropriate speed while providing an appropriate sliding friction, it is necessary to use a screw should be gently returned with the fingertips. A friction plate with a large friction coefficient is interposed between the drum and the support member,
A rolling inclusion is provided between the manually rotating member and the supporting member,
By making rolling contact, the braking force generated by body weight can be released by turning the manual rotation member lightly.In other words, it is an automatic tightening type that descends only by the amount that the manually rotating member is turned, so there is no risk of accidents due to incorrect operation. You can get a chance. In addition, since the structure is extremely simple, the central part can be made hollow, and carbon monoxide, hydrogen cyanide, which is generated in the event of a fire, can be stored in the hollow part.
It houses a filter that removes chlorine and hydrogen sulfide, and by placing it over your mouth, you can breathe for a short period of time.

<Embodiment> An embodiment of the present invention will be described with reference to the drawings. Figure 1 is a cross-sectional view in which a lobe 4 is wound around a drum 3, and the tip of the lobe is attached to a bottle 1 at the bottom of the groove of the drum. Fixed. There is a clutch desk 12 on the side of the drum. is fixed. Clutch disc 12. Screw 24 on the inner diameter side. A manually rotating member 11. is provided. be screwed together. clutch desk 1
Between .2 and the manual rotating member 11° is a support member 6. for connecting the drum and the human body. is interposed so that the support member is tightened by the rotation of the drum. Further, a roller 20 is provided between the manual rotation member and the support member. interposes and rolls into contact. Clutch desk 12. and supporting member 6. There is a friction plate 23 with a large friction coefficient between the two. intervenes. The manual rotation member has a lever~8. is expandable with Bin 7, equipped with Mami 10
, is pulled out from the lever 8 in the axial direction so that the manual rotation member can be rotated by hand. The drum is a bearing 19 of the support member.
,21. It is rotatably supported.

The bearing member 2.6 is 13. It is connected to the human body and fastened with a belt. Drum 3. The tip of the 4° lobe wrapped around the bottle 1. Drum 3. It is connected to. The drum is thus rotated by unwinding the lobe under the weight of the clutch screw 24. The manually rotating member 11 is pressed against the friction plate 23 to automatically tighten and apply braking force.
, the automatic tightening is released and the drum rotates by the amount that is turned. The manual rotating member is operated by the supporting member and the rolling element 20.
There is a rolling contact at screw 24. The surface is coated with carbon graphite, which has a low coefficient of friction and can be turned with a small torque. With such a configuration, it is possible to make all the components of the drum, clutch, and manually rotating member hollow. Cavity part 26. The drum contains a chemical filter that absorbs toxic gases, and a mask attached to the side of the drum is placed over the mouth to ensure short-term breathing.

Even when the drum is fastened to the human body with a belt, the main body is located exactly near the mouth, so there is no risk of inhaling gas from beginning to end, including during operation.

<Effects of the Invention> By carrying out the present invention, it is possible to reduce the weight and size, so it can be carried anywhere, and since the number of parts is small, reliability is high. It is resistant to shocks, and the operation is manual so there is no chance of misoperation.The mask installed in the center to ensure breathing against toxic gases can protect people from toxic gases caused by building fires.It can be placed in the bottom of the bag. It is also useful for ensuring safety when traveling abroad. .

[Brief explanation of the drawing]

Figure 1 is an explanatory cross-sectional diagram, Figure 2 is an explanatory diagram of operation, numbers and names of the components in Figure 1. 1. is a bottle 2. and 6° bearing member 3. Drum 4. Robe 8. Lever 10, knob 11, manual rotation member 12. Clutch desk 20. Rolling element 23. Friction plate 24. Screw 27, filter 28
．． Mask 299 Human body fastening belt

Claims (2)

[Claims] (1) A drum wrapped with a descending rope is connected to the human body, the end of the rope is fixed at a high place, the drum and the body are suspended, and the rope is screwed onto the drum so that it is slowly unwound from the drum. In a gradual descender, a support member for a drum connected to a human body is interposed between a manual rotation member and a manual rotation member, and the drum is lowered at a controlled speed by adjusting the tightening pressure of the support member while rotating the manual rotation member in a loosening direction. , A gradual descent device characterized in that the manual rotation member and the support member are in rolling contact. (2) In the gradual descent device, a drum and a manual member,
A slow descent device characterized by a hollow center of the support member.