Refuge device

Abstract

The utility model provides a refuge device, which can enable people with poor physical strength or disabled hands and feet to easily descend for refuge. The refuge device lifts and lowers a lift platform (2) along a guide pillar (1). The lifting platform (2) is provided with a pinion (4) and a speed reduction device (5) connected with the pinion (4). The guide pillar (1) has a plurality of locking parts (8) formed at a predetermined pitch in the longitudinal direction, and a counterweight (7) connected to the lifting table (2) via a rope (6). A pinion (4) of the lifting platform (2) is engaged with a locking part (8) of the guide pillar (1), the descending speed of the lifting platform (2) is limited by a speed reduction device (5) connected with the pinion (4) when the lifting platform (2) descends, and the lifting platform (2) is lifted by a counterweight (7) connected through a rope (6) when the lifting platform (2) ascends.

Description

Technical Field

[0001] The utility model relates to a refuge device. Background Art

[0002] A refuge device is known, which comprises: a housing frame fixed to an opening provided in a floor of a building; an upper cover and a lower cover pivotally fixed to the floor surface side and the top surface side of the housing frame, respectively; and a refuge ladder folded and accommodated in the housing frame. The refuge device allows a user to take refuge by opening the upper cover and the lower cover and extending the refuge ladder to the vicinity of the floor below.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2011-038297 Utility Model Content

[0006] Issues to be Solved by Utility Models

[0007] However, in the above-mentioned evacuation device, it is difficult for a person without physical strength or a person with handicapped limbs to descend from the extended evacuation ladder.

[0008] The utility model is completed in order to eliminate the above disadvantages, and its purpose is to provide a refuge device that can make people without physical strength or people with inconvenient hands and feet easily descend for refuge.

[0009] Solutions to Solve Problems

[0010] Solution 1 of the utility model is a refuge device, which enables the lifting platform to rise and fall along the guide pillar, and is characterized in that:

[0011] The lifting platform has a pinion and a speed reduction device connected to the pinion.

[0012] The guide support has a plurality of locking portions formed at predetermined intervals in the longitudinal direction and a counterweight connected to the lifting platform via a rope.

[0013] The pinion gear of the lifting platform is meshed with the locking portion of the guide support.

[0014] The lifting platform is limited in descent speed by the reduction gear connected to the pinion gear when descending, and is pulled up by the counterweight connected via the rope when ascending.

[0015] Scheme 2 is an evacuation device according to Scheme 1, characterized in that:

[0016] A concave portion is formed along the length direction on the surface of the guide support pillar opposite to the surface on which the plurality of locking portions are arranged.

[0017] A rolling element that rolls in the concave portion when the lifting platform is raised or lowered is provided at a position on the side of the lifting platform opposite to the pinion gear across the guide support.

[0018] Scheme 3 is an evacuation device according to Scheme 1 or 2, characterized in that:

[0019] The reduction gear is provided in pair at a position straddling the guide support column, and is connected to respective ends of the rotating shaft protruding to both sides from the pinion gear.

[0020] A fourth embodiment is an evacuation device according to any one of the first to third embodiments, characterized in that:

[0021] The plurality of locking portions are a plurality of engagement openings formed at predetermined intervals on the strip plate portion of the guide support column.

[0022] A fifth embodiment is an evacuation device according to any one of the first to fourth embodiments, characterized in that:

[0023] The guide support column is formed in a hollow shape capable of accommodating the counterweight and the rope therein.

[0024] A sixth embodiment is an evacuation device according to any one of the first to fifth embodiments, characterized in that:

[0025] A guide portion for restricting lateral movement accompanying the vertical movement of the counterweight is provided inside the guide support column.

[0026] A seventh embodiment is an evacuation device according to any one of the first to sixth embodiments, characterized in that:

[0027] The armrest device is foldably connected to the lift platform by connecting both ends of a pair of supporting legs to the lift platform and a pair of opposing sides of an armrest body forming a substantially U-shape.

[0028] Utility Model Effect

[0029] According to the evacuation device of the aspect of the present invention, a person without physical strength or a person with inconvenient hands and feet can easily descend and evacuate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG. 1(A) is a diagram showing an installation state of the evacuation device of the present disclosure, and is a top view, and FIG. 1(B) is a diagram showing an installation state of the evacuation device of the present disclosure, and is a bottom view.

[0031] Figure 2 It is a longitudinal sectional view showing the evacuation device.

[0032] Figure 3This is a longitudinal sectional view of the main parts for explaining the guiding structure of the guide pillar for the lifting platform.

[0033] Figure 4 This is a perspective view for explaining the structure of the locking device and the reduction device of the lifting platform.

[0034] 5(A) is a side view of a main part for explaining the operation of the locking device, and is a diagram showing a locked state, and FIG. 5(B) is a side view of a main part for explaining the operation of the locking device, and is a diagram showing a released state.

[0035] Figure 6 This is a cross-sectional view of the main parts for explaining the meshing opening (locking portion) between the pinion gear and the guide pillar, and the recessed portion of the balance roller (rolling element) and the guide pillar.

[0036] Figure 7 It is a partial longitudinal sectional view showing the evacuation device in a state accommodated in a casing.

[0037] Figure 8 It is a top view showing the evacuation device in a state accommodated in a casing (with the upper cover omitted).

[0038] Fig. 9 This is a partial longitudinal sectional view showing the evacuation device with the handrail device in use.

[0039] In the figure:

[0040] 1—guide pillar, 2—lifting platform, 3—rack, 4—pinion, 5—reduction device, 6—wire rope, 7—counterweight, 8—engagement opening, 9—gap, 10—rack mounting part, 11—guide part, 12—rotating shaft. DETAILED DESCRIPTION

[0041] As shown in Figure 1(A), Figure 1(B) and Figure 2 As shown, the refuge device is used for evacuating from the upper floor to the lower floor in an emergency. The refuge device comprises, for example, a housing 23 which is fitted and fixed to an opening 21b opened in the floor 21a of the staircase 21 of the upper floor, and a guide support 1 which is erected on the floor 22a of the staircase 22 of the lower floor.

[0042] The housing 23 is formed in a cylindrical shape with the same height as the floor 21a, and has a refuge opening 27 inside. The housing 23 can open and close the upper opening portion of the refuge opening 27 by an upper cover 28, and can open and close the lower opening portion by a lower cover 29. The upper cover 28 is connected to the housing 23 so as to be vertically rotatable around a pivot 30. The lower cover 29 is integrally provided with the lifting platform 2, which will be described later, which is accommodated in the housing 23.

[0043] The guide pillar 1 is a hollow tube made of metal with appropriate torsional strength. The lower end of the guide pillar 1 is fixed by a base 32 provided on the floor 22a of the lower layer by an anchoring member not shown in the figure. In addition, the upper end of the guide pillar 1 is supported by a bracket 33 fixed to the shell. In the guide pillar 1, a recess 1a is formed along the length direction, and a balance roller 36d (rolling body) of the lifting platform 2 described later can roll in the recess 1a. A cushioning material (not shown) is provided on the upper part of the base 32 to collide with the lower cover 29 of the lifting platform 2 descending to the lower layer.

[0044] In addition, the above-mentioned lifting platform 2 for transporting the refugee A from the upper floor to the lower floor is accommodated in the above-mentioned housing 23. The lifting platform 2 is formed by fixing a flat plate-shaped upper plate 2b on the upper part of the frame-shaped base 2a, and the above-mentioned lower cover 29 is fixed on the bottom surface of the frame-shaped base 2a. The lower cover 29 is formed so that the peripheral edge portion extends outward from the frame-shaped base 2a. The lifting platform 2 is stored in the housing 23 when it is at the upper stroke terminal position. In this state, the lower cover 29 closes the lower open part of the refuge opening 27.

[0045] In this embodiment, the side through which the guide support 1 penetrates in the lifting platform 2 is set as the front. Figure 3 As shown, a fixing member 34 is provided at the front end of the lifting platform 2, and the fixing member 34 has a cylindrical portion that surrounds the guide pillar 1 from the side over a substantially entire circumference. A main roller 36a arranged up and down and in contact with the rear surface of the guide pillar 1, a rear roller 36c in contact with the front surface of the guide pillar 1, and a balance roller 36d in contact with the concave portion 1a formed on the front surface of the guide pillar 1 are freely rotatably mounted on the fixing member 34, and the lifting platform 2 is raised and lowered along the guide pillar 1 while rolling these rollers 36a, 36c, and 36d.

[0046] In addition, in order to prevent the lift platform 2 from accidentally descending from the upper stroke end position when the evacuee A is boarding, a locking device 39 is provided in the evacuation device. Figure 4 As shown in Figures 5(A) and 5(B), the locking device 39 comprises: a stop member 40, which is arranged on the side of the lifting platform 2, has a hook portion 40a at the front end, and can rotate freely around a rotating axis 41; and a fixed portion 42, which is arranged on the side of the guide pillar 1 and is used for the above-mentioned hook portion 40a to engage / disengage.

[0047] The stopper 40 is formed into a U-shape in a plan view by bridging a pedal portion 40b between a pair of hook portions 40a. By arranging a pair of hook portions 40a on both sides of the guide pillar 1 in a spanning manner, the pedal portion 40b can be swung in a vertical direction near the rear surface of the guide pillar 1. The stopper 40 applies force to the pedal portion 40b upward, i.e., counterclockwise in FIG. 5(A) and FIG. 5(B), through a torsion spring (not shown). On the other hand, the locked portion 42 is composed of U-shaped bolts installed on both sides of the guide pillar 1, and is provided at a position where the hook portion 40a is locked when the lifting platform 2 is at the upper stroke terminal position.

[0048] Therefore, the stopper 40 is urged by the torsion spring in the direction in which the hook 40a is locked to the locked portion 42, and as shown in FIG5(A), the lifting platform 2 is locked to the locked portion 42 when the lifting platform 2 is at the upper stroke terminal position, that is, when it is stored in the housing 23, and the lifting platform 2 is maintained at the upper stroke terminal position. When the evacuee A steps on the pedal 40b from this state, as shown in FIG5(B), the stopper 40 rotates in the clockwise direction, that is, in the direction of releasing the locking with the locked portion 42, and the lifting platform 2 without support descends due to its own weight and the load of the evacuee A.

[0049] In addition, when the operating force on the pedal portion 40b is released, the torsion spring acts on the stop member 40 to exert a counterclockwise rotation force, that is, a restoring force to the original position. When the lift 2 rises toward the upper stroke end position in this state, the inclined surface 40c formed on the hook portion 40a collides with the locked portion 42, and a component force in the counterclockwise direction acts on the stop member 40, thereby the hook portion 40a avoids the locked portion 42, and the lift 2 rises further. Afterwards, when reaching the upper stroke end position, the hook portion 40a passes over the locked portion 42, and is elastically locked to the locked portion 42 by the action of the torsion spring, and the locking device 39 automatically returns to the locked state.

[0050] Furthermore, in order to improve the safety during evacuation, a handrail device 44 is provided on the lifting platform 2. The handrail device 44 is formed to be foldable, so that Figure 7 to Figure 9 As shown, there are support legs 45 foldably connected to the lifting platform 2 and an armrest body 46 foldably connected to the support legs 45 .

[0051] The armrest body 46 is formed into a substantially U-shape by extending the same straight bar-shaped horizontal armrest parts 46b from both ends of the straight bar-shaped front armrest part 46a in the orthogonal direction. The front armrest part 46a has a length slightly larger than the lateral width of the lifting platform 2, and the horizontal armrest part 46b has a length slightly larger than the thickness of the normal body of an adult male.

[0052] On the other hand, the support leg 45 is formed to be retractable by connecting a pair of large and small straight rod-shaped tube bodies 47 in a telescopic manner. The support leg 45 is composed of a pair in order to be connected to the free end portions of the above-mentioned respective horizontal handrail portions 46b.

[0053] like Figure 7 As shown in the figures, the above support legs 45 are connected to the lifting platform 2 at the end opposite to the armrest body 46, and are vertically rotatably connected to the side surface of the front end of the lifting platform 2 through a connecting piece 49 in order to suppress the height when folded to a low level.

[0054] In addition, if Figure 7 as well as Fig. 9 As shown, the armrest body 46 and the support leg 45 are connected via a connecting bracket 48. The connecting bracket 48 is fixed to the free end of the horizontal armrest portion 46b in a non-rotatable manner, and is vertically rotatably connected to the front end of the support leg 45 via a vertical rotation axis 51, and can be changed between a folded posture in which the support leg 45 is approximately parallel to the horizontal armrest portion 46b and an unfolded posture in which they are approximately orthogonal.

[0055] Therefore, after opening the upper cover 28, when the armrest body 46 is lifted upward by holding the middle portion of the horizontal armrest portion 46b, the Fig. 9 As shown, the support legs 45 change their positions from the folded position to the deployed position relative to both the lift platform 2 and the armrest body 46, and enter the extended state from the retracted state, so that the armrest device 44 can be changed from the folded state to the usable state.

[0056] At this time, the roughly U-shaped handrail body 46 opens its end toward the rear, forming a boarding area for the refugees A on the lift platform 2 slightly to the rear of the guide support 1, with the upper space surrounded by the front handrail portion 46a and the lateral handrail portions 46b, 46b from three directions.

[0057] In addition, if Fig. 9 As shown in the figure, in this state, the height of the armrest body 46, that is, the front armrest part 46a and the horizontal armrest part 46b from the upper surface of the lifting platform 2 is about the normal waist height of an adult male in an upright posture, and the refugee A in the boarding area can hold the armrest body 46 in a natural posture. In addition, the two sides of the lower space of the boarding area are blocked by the support legs 45 inclined in the deployed posture, so that the vicinity of the knees and the like will not be deviated to the side of the body and fall out of the boarding area.

[0058] Next, when the evacuee A steps on the pedal portion 40 b to release the locking device 39 , the evacuee A passes through the evacuation opening 27 , but the evacuee A does not collide with the peripheral edge of the evacuation opening 27 because the evacuee A is located in the above-mentioned boarding area.

[0059] Furthermore, in order to reduce the descending speed of the lifting platform 2 when the locking device 39 is released as described above, a slow descending device 55 is provided in the refuge device. Figure 3 as well as Figure 4 As shown, the slow-descent device 55 includes a rack 3 fixed to the guide support 1 , a pinion 4 rotatably provided on the lifting platform 2 and meshing with the rack 3 , and a speed reduction device 5 connected to the rotating shaft 12 of the pinion 4 .

[0060] The rack 3 is formed by opening through-hole-shaped meshing openings 8 at predetermined intervals in a high-strength plate such as stainless steel, and has a length that extends over substantially the entire length of the guide support 1. Figure 6 As shown, on the rear surface of the guide pillar 1, a rack mounting groove 10 is formed in the central part in the width direction to support the two side edges of the rack 3. By installing the rack 3 in the rack mounting groove 10, the gap 9 is ensured behind the meshing opening 8 by utilizing the above-mentioned rack mounting groove 10.

[0061] The pinion 4 is made of the same material as the rack 3, and the number of teeth is adjusted to allow a plurality of teeth to mesh simultaneously with the rack 3. The rotating shaft 12 of the pinion also serves as the support shaft 35 of the main roller 36a.

[0062] On the other hand, the reduction gear 5 is a centrifugal brake type device, which operates when the rotation speed of the pinion 4 reaches a predetermined value or more to limit the rotation speed. The reduction gear 5 is connected to the rotating shaft 12 of the pinion 4 via a one-way clutch 57, and the rotational force is transmitted from the pinion 4 to the reduction gear 5 via the one-way clutch 57 only in the rotation direction of the pinion 4 corresponding to the descending action of the lifting platform 2. Figure 4 In the figure, 58 is a gear in which the one-way clutch 57 is installed and which transmits only the rotational force of the pinion 4 when the lifting platform 2 is lowered to the reduction gear 5. In addition, as the reduction gear 5, in addition to the centrifugal brake type as described above, for example, a mechanical friction type reduction gear or a fluid resistance type reduction gear can also be used.

[0063] Therefore, when the lifting platform 2 descends by releasing the locking device 39 as described above, the pinion 4 is forced to rotate by meshing with the rack 3, and the rotation speed of the pinion 4 is limited by the speed reducer 5, thereby reducing the descending speed of the lifting platform 2. In addition, the pinion 4 and the rack 3 are meshed at multiple teeth at the same time, thereby making it possible to well distribute the load burden of the evacuee A and the lifting platform 2. Furthermore, if a centrifugal brake type speed reducer is used as the speed reducer 5 as described above, compared with a mechanical friction type speed reducer, etc., even when the weight of the evacuee A is light, rapid evacuation can be performed.

[0064] Furthermore, the overall height dimension of the lift platform 2 equipped with the above-mentioned slow-descent device 55 , the armrest device 44 in the folded state, and the above-mentioned locking device 39 is set to be lower than the height dimension of the housing 23 .

[0065] In order to raise the lifting platform 2 in the opposite direction to the above, the refuge device is provided with a counterweight 7 and a wire rope 6. Figure 2 As shown, the counterweight 7 is formed in a columnar shape that is significantly shorter than the guide support column 1 and is vertically movable and accommodated inside the guide support column 1. The counterweight 7 has a weight that is more than twice that of the lifting platform 2.

[0066] On the other hand, Figure 2 as well as Figure 3 As shown, regarding the steel wire rope 6, one end of the steel wire rope 6 is mounted on a hanging metal fitting 59 mounted on the upper end of the guide pillar 1, and the other end of the steel wire rope 6 is mounted on a hooking metal fitting 54 provided on the fixing member 34 of the lifting platform 2. The steel wire rope 6 is hung around a movable pulley 60 mounted on the upper surface of the counterweight 7 and a fixed pulley 61 mounted on the upper end of the guide pillar 1 at the middle portion, and the counterweight 7 is hung near the lower end of the guide pillar 1 when the lifting platform 2 is at the upper stroke end position, and the counterweight 7 is hung slightly above the center of the guide pillar 1 when the lifting platform 2 is at the lower stroke end position.

[0067] Therefore, when the lifting platform 2 carrying the refugee A and descending as described above reaches the lower stroke end position, and then, when the refugee A descends from the lifting platform 2, the lifting platform 2 is pulled up by the counterweight 7 via the wire rope 6 and can be restored to the upper stroke end position. As described above, the one-way clutch 57 is assembled in the slow-down device 55, so the lifting platform 2 rises quickly without being hindered by the deceleration device 5.

[0068] In addition, if Figure 6 As shown, a guide portion 11 is formed on the inner wall surface of the guide support 1, which is close to the outer peripheral surface of the counterweight 7 with a narrow gap and restricts the counterweight 7 from swinging or rotating horizontally in a pendulum-like manner. Therefore, it is possible to prevent the counterweight 7 from swinging unnecessarily when it moves up and down simultaneously with the lifting platform 2, and since the protruding contact surface is small, it is possible to reduce the friction resistance caused by the up and down movement of the counterweight 7, and the lifting and lowering movement of the lifting platform 2 becomes smooth without twisting and wearing the wire rope 6. In addition, in the present embodiment, a lightweight and highly durable wire rope using carbon fiber is used for the wire rope 6.

[0069] As described above, the wire rope 6 connecting the lifting platform 2 and the counterweight 7 can be reduced in diameter to the extent that it does not need to support the body weight, and become soft, thereby also improving the durability of the wire rope 6 itself. In addition, by using carbon fiber in the wire rope 6, a lifting device with high durability can be realized.

[0070] Therefore, when the lift platform 2 carrying the refugee A descends to a height where the refugee can safely evacuate to the stairwell 22 of the lower floor, it contacts the cushioning material (not shown) of the base 32 and stops the descending action. After that, when the refugee A descends from the lift platform 2, the lift platform 2 rises due to the action of the counterweight 7. When the lift platform 2 reaches the upper stroke terminal position, the lift platform 2 enters the housing 23 and the locking device 39 works. When there are other refugees A waiting on the upper floor, they enter the lift platform 2 in this state, release the locking device 39, and can evacuate next to the refugee A who evacuated previously.

[0071] Furthermore, in the present embodiment, the guide pillar 1 is provided with a plurality of meshing openings 8 as the locking portion, but the present invention is not limited thereto, and a plurality of teeth (racks) may be provided.

Claims

1. A refuge device, which enables a lifting platform to be raised and lowered along a guide support, characterized in that: The lifting platform has a pinion and a speed reduction device connected to the pinion. The guide support has a plurality of locking portions formed at predetermined intervals in the longitudinal direction and a counterweight connected to the lifting platform via a rope. The pinion of the lifting platform is meshed with the locking portion of the guide support. The lifting platform is restricted in descent speed by the speed reduction device connected to the pinion gear when descending, and is pulled up by the counterweight connected via the rope when ascending.

2. The refuge device according to claim 1, characterized in that: A concave portion is formed along the length direction on a surface of the guide support pillar opposite to the surface on which the plurality of locking portions are arranged. A rolling element that rolls in the concave portion when the lifting platform is raised or lowered is provided at a position on the opposite side of the guide support of the lifting platform to the pinion gear.

3. The refuge device according to claim 1 or 2, characterized in that: The reduction gears are provided in a pair at positions straddling the guide support posts, and are connected to respective ends of the rotating shaft protruding to both sides from the pinion gear.

4. The refuge device according to claim 1 or 2, characterized in that: The plurality of locking portions are a plurality of engagement openings formed at predetermined intervals on the belt plate portion of the guide support column.

5. The refuge device according to claim 1 or 2, characterized in that: The guide support column is formed in a hollow shape capable of accommodating the counterweight and the rope therein.

6. The refuge device according to claim 5, characterized in that: A guide portion for restricting lateral movement accompanying the vertical movement of the counterweight is provided inside the guide support column.

7. The refuge device according to claim 1 or 2, characterized in that: The armrest device is foldably connected to the lift platform by connecting both ends of a pair of supporting legs to the lift platform and a pair of opposing sides of an armrest body forming a substantially U-shape.

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