Lifting refuge device

Abstract

The lift-type refuge device of the present application reliably raises the lift platform upward and suppresses noise at the upper end. A lift platform (20) for occupants moves up and down between upper and lower balconies (1) and (2). A frame member (30) provided on the upper balcony (1) is provided with a linkage body of a damper (71), a swing arm (72), and a spring (73). The lift platform (20) is provided with a first arm engaging portion (61) and a second arm engaging portion (62). The swing arm (72) subjected to the force of the spring (73) can attain a standby position in which the swing is stopped. When the lift platform (20) is raised, the first arm engaging portion (61) is subjected to the damping action of the damper (71) by swinging the swing arm (72) in the standby position, and the force of the spring (73) acts as a lifting force of the lift platform via the second arm engaging portion from the swing arm. When the lift platform is lowered from the upper balcony, the second arm engaging portion swings the swing arm to the standby position.

Description

Technical Field

[0001] This invention relates to a lifting refuge device. Background Technology

[0002] The building is equipped with a refuge system for taking refuge from a high position (upper floor) to a low position (lower floor) in the event of a disaster such as a fire. This refuge system is designed with a lifting mechanism.

[0003] Patent Document 1 discloses a lifting-type refuge device. Patent Document 1 discloses the following technical content: It includes a lifting platform that moves vertically between a high position and a low position, guided by a guide column extending vertically. An evacuee transfers to the lifting platform from the high position, and the lifting platform descends to the low position while the evacuee is seated. After the evacuee disembarks from the lifting platform at the low position, the lifting platform rises to the high position. This operation is repeated to sequentially transfer evacuees from the high position to the low position. It also discloses using the weight of a load connected to the lifting platform to raise the lifting platform from its low position.

[0004] Patent Document 1 also discloses a mechanical locking mechanism for preventing the lifting platform from accidentally falling from a predetermined high position. The mechanism is further disclosed in that it automatically locks when the lifting platform rises to the high position, and can be unlocked manually.

[0005] Although the rising platform stops at a predetermined high position, it comes into contact with components located at the high position upon stopping, which can easily generate noise. Patent document 2, which discloses a lifting refuge device, discloses the following: a buffer (spring) is provided at the high position to mitigate the impact of the capsule (corresponding to the lifting platform) upon reaching the high position. Furthermore, patent document 3, which also discloses a lifting refuge device, discloses the following: a buffer unit (spring, damper, rubber) is provided at the low position for the pod (corresponding to the lifting platform) to contact.

[0006] Existing technical documents

[0007] Patent documents

[0008] Patent Document 1: Japanese Patent Application Publication No. 2014-207940

[0009] Patent Document 2: Japanese Patent Application Publication No. 2011-72767

[0010] Patent Document 3: Japanese Patent Application Publication No. 2003-118951 Summary of the Invention

[0011] The problem that the invention aims to solve

[0012] To reduce noise when the lifting platform rises to its highest position, a damper is installed. This damper generates a reaction force in the direction of pressing the lifting platform down to provide a buffering effect. Furthermore, it is considered that the lifting platform may stop slightly below the intended high position due to the reaction force of the damper. In this case, not only is the requirement to stop the lifting platform at the intended high position not met, but there is also the possibility that the locking mechanism, which is set to operate at the high position, may not be able to ensure its locking function.

[0013] To reliably lock the locking mechanism at a high position, increasing the force and speed at which the lifting platform is raised is considered. However, this increases the noise problem when the lifting platform reaches the high position. In particular, during evacuation training, it is preferable to repeatedly move the lifting platform up and down to understand its use, but the significant noise generated each time the platform reaches a high position may prevent evacuation training involving moving the lifting platform up and down from being conducted.

[0014] In order to both suppress noise when the lifting platform reaches the high position and reliably stop the lifting platform at the high position, it is necessary to make the lifting platform rise slowly and reliably to the predetermined high position. However, it is difficult to meet such requirements by using only dampers.

[0015] The present invention was made in view of the above circumstances, and its object is to provide a lifting refuge device that enables the lifting platform to reliably rise to a predetermined high position and also suppresses noise when reaching the predetermined high position.

[0016] Solution for solving the problem

[0017] To achieve the above objectives, the following solution is adopted in this invention. That is,

[0018] A lifting refuge device, comprising:

[0019] A lifting platform that moves up and down between a predetermined high position in a building that serves as a refuge site and a low position below that high position, where refugees ride.

[0020] A swing arm, which is mounted on one side of the fixed component located at the aforementioned high position and the aforementioned lifting platform;

[0021] A damper, which is connected to the swing arm;

[0022] The force-applying unit applies a force to the swing arm in a predetermined direction;

[0023] The first arm engaging portion is located on the other side of the aforementioned fixing component and the aforementioned lifting platform; and

[0024] The second arm engaging portion is positioned vertically spaced from the first arm engaging portion.

[0025] The swing position of the aforementioned swing arm is set to a predetermined boundary position, and the swing direction of the swing arm is changed based on the force applied by the aforementioned force unit. Furthermore, the swing arm can achieve a standby position at the boundary position or after swinging to a position further away from the boundary position and stopping its swing.

[0026] During the process of the lifting platform rising to the aforementioned high position, the first arm engaging portion abuts against the swing arm located in the aforementioned standby position, causing the swing arm to swing to the other side. This is where it is cushioned by the aforementioned damper. After the swing arm swings to a position further to the other side than the aforementioned boundary position, the force applied by the aforementioned force unit acts as a force from the swing arm through the aforementioned second arm engaging portion, causing the lifting platform to rise, and the lifting platform reaches the aforementioned high position.

[0027] As the lifting platform descends from the aforementioned high position, the second arm engaging portion abuts against the aforementioned swing arm, causing the swing arm to swing toward the aforementioned standby position, and then the abutment with the swing arm is released.

[0028] According to the above solution, when the lifting platform rises from near the predetermined high position to that predetermined high position, the first arm engaging portion causes the swing arm, which is in the standby position, to swing and switch to a state where it functions as a damper, thereby allowing the lifting platform to rise slowly and suppressing noise generation when it reaches the predetermined high position. Furthermore, in the state where the damper's buffering function is activated, the force applied by the force unit acts as a force that lifts the lifting platform via the second arm engaging portion, enabling the lifting platform to reach the predetermined high position slowly and reliably. Additionally, when the lifting platform descends from the predetermined high position, the second arm engaging portion returns the swing arm to the standby position, preparing for the damper's buffering function during the next lifting platform ascent and allowing the force applied by the force unit to accumulate the force needed to lift the lifting platform.

[0029] The preferred first solution based on the above solution is as follows.

[0030] The aforementioned damper, swing arm, and force application unit are respectively disposed on the aforementioned fixed component.

[0031] The aforementioned first arm engaging portion and the aforementioned second arm engaging portion are respectively provided on the aforementioned lifting platform.

[0032] The aforementioned first arm engaging portion is located below the aforementioned second arm engaging portion.

[0033] The front end of the swing arm, located in the aforementioned standby position, faces downwards.

[0034] According to the first method described above, a damper, a swing arm, and a force-applying unit, which are relatively complex structural components, are provided on the fixed component at the predetermined high position side, thus avoiding complicating the structure of the lifting platform, which is preferable. Furthermore, by pre-positioning the front end of the swing arm, which is in the standby position, downwards, the swing arm can reliably swing when the lifting platform rises, which is also preferable.

[0035] The preferred second solution based on the above solution is as follows.

[0036] The aforementioned damper, swing arm, and force application unit are respectively installed on the aforementioned lifting platform.

[0037] The first arm engaging portion and the second arm engaging portion are respectively provided on the aforementioned fixing component.

[0038] The first arm engaging portion is located above the second arm engaging portion.

[0039] The front end of the swing arm, located in the aforementioned standby position, faces upward.

[0040] According to the second method described above, the damper, swing arm, and force application unit, which are relatively complex structural components, are centrally arranged on the lifting platform, simplifying the structure of the fixed components near the predetermined high position, which is preferable. Furthermore, by pre-positioning the front end of the swing arm, which is in the standby position, upward, the swing arm can reliably swing when the lifting platform rises, which is also preferable.

[0041] The preferred third solution based on the above solution is as follows.

[0042] A rotatable roller is maintained at the front end of the aforementioned swing arm.

[0043] The first arm engaging portion and the second arm engaging portion abut against the swing arm via the roller.

[0044] According to the third method described above, by making the engagement part of each arm abut against the swing arm via the roller, the impact can be mitigated during the abutment, and after the abutment, the roller can move smoothly along the engagement part of each arm according to the swing of the swing arm.

[0045] The preferred fourth solution based on the above solutions is as follows.

[0046] The surface of the first arm engaging portion that abuts against the swing arm is an inclined surface, which is inclined toward the second arm engaging portion as it moves toward the front end. According to the fourth method described above, the front end of the first arm engaging portion can reliably abut against the swing arm, and after this abutment, its front end is smoothly guided toward the base end of the first arm engaging portion according to the swing of the swing arm, which is preferable.

[0047] The preferred fifth solution based on the above solutions is as follows.

[0048] The base end of the aforementioned swing arm is rotatably held in the mounting bracket.

[0049] The damper is configured as a reciprocating type, with one end rotatably mounted on the mounting bracket and the other end rotatably connected to the swing arm.

[0050] According to the above scheme, by pre-assembling the damper and the swing arm onto the mounting bracket, the assembly accuracy of the damper and the swing arm is improved, making the installation operation at the predetermined position easier, which is preferred.

[0051] The preferred sixth solution based on the above-mentioned solutions is as follows.

[0052] It is equipped with a locking mechanism for locking the aforementioned lifting platform at the aforementioned high position.

[0053] The aforementioned locking mechanism includes a locking component fixedly disposed at the aforementioned high position, and an engaging component disposed on the aforementioned lifting platform and engaged with the locking component at the aforementioned high position.

[0054] During the process of the lifting platform rising towards the higher position, after the swing arm just comes into contact with the first arm engaging part, it becomes the state before the engaging part and the locking part engage. After the swing arm comes into contact with the second arm engaging part, the engaging part engages with the locking part.

[0055] According to the sixth embodiment described above, the lifting platform slowly and reliably rises to a predetermined high position, thereby enabling the locking mechanism to reliably lock at the predetermined high position. This prevents the lifting platform from unexpectedly descending when it is at the predetermined high position, which is preferable.

[0056] The effects of the invention are as follows.

[0057] According to the present invention, the lifting platform can be reliably raised to a predetermined high position, and noise can also be suppressed when reaching the predetermined high position. Attached Figure Description

[0058] Figure 1This is a perspective view of the balcony section of a building to which the present invention is applied.

[0059] Figure 2 It was observed from below. Figure 1 A 3D view of the lower part of the balcony.

[0060] Figure 3 This is a simplified side view illustrating the overall outline of the invention.

[0061] Figure 4 This is a perspective view showing the main part of the structure near the guide column in the lifting platform.

[0062] Figure 5 This is a side view showing the locking mechanism.

[0063] Figure 6 This is a side view showing the state of the locking mechanism just after the engaging component has come into contact with the locking component from below.

[0064] Figure 7 This shows the lifting platform from Figure 6 The side view shows the state before the locking mechanism's engaging component is about to engage with the locking component, with the state slightly rising.

[0065] Figure 8 This shows the lifting platform from Figure 7 A side view of the state after the locking mechanism's engaging component and locking component have engaged when the state rises to a predetermined high position.

[0066] Figure 9 This is an enlarged side view of the main part showing the state after the engaging and locking components are engaged.

[0067] Figure 10 This is a front view showing the silent mechanism section with the lifting platform positioned lower than the intended high position.

[0068] Figure 11 This is a front view showing the silent mechanism section and the lifting platform at a predetermined height.

[0069] Figure 12 This is a side view showing the relationship between the swing arm, the damper, and the force application unit.

[0070] Figure 13 It is a side view showing the relationship between the swing arm and the damper and the state of the lifting platform in the standby position.

[0071] Figure 14 This diagram shows the working state of the silent mechanism and the state after the lifting platform rises and the first arm engagement part just comes into contact with the roller held at the front end of the swing arm.

[0072] Figure 15 This shows the working status of the silent mechanism and the lifting platform from... Figure 14 The diagram shows the state where the first arm engagement part presses upward against the swing arm as the state rises slightly.

[0073] Figure 16 This shows the working status of the silent mechanism and the lifting platform from... Figure 15 The diagram shows the state after the swing arm has just come into contact with the engagement part of the second arm, with the state slightly rising.

[0074] Figure 17 This shows the working status of the silent mechanism and the lifting platform from... Figure 16 The diagram shows the state where the swing arm presses upwards against the second arm engagement part as the swing arm rises slightly.

[0075] Figure 18 This shows the working status of the silent mechanism and the lifting platform from... Figure 17 The diagram shows the state of the platform just before it reaches the predetermined high position, with the platform rising slightly.

[0076] Figure 19 This shows the working status of the silent mechanism and the lifting platform from... Figure 18 The diagram shows the state after the state rises further and reaches the predetermined high position.

[0077] Figure 20 This illustrates the second embodiment of the invention and is related to... Figure 4 The corresponding 3D image.

[0078] Figure 21 This illustrates the second embodiment of the invention and is related to... Figure 19 The corresponding diagram.

[0079] Figure 22 This illustrates the second embodiment of the invention and is related to... Figure 14 The corresponding diagram.

[0080] In the picture:

[0081] M—Building, H—Refuge device, S—Silencer mechanism, S2—Silencer mechanism ( Figures 20 to 22R—Locking mechanism, 1—Upper balcony (high position), 2—Lower balcony (low position), 10—Guide column, 13—Weight, 14—Cable, 20—Lifting platform, 21—Bracket, 30—Frame component (fixed component located in the high position), 50—Clocking component, 51—Clacking component, 52—Spring, 53—Release lever, 61—First arm locking part, 62—Second arm locking part, 63—Storage space, 71—Damper, 71a—Cylinder, 71b—Piston, 71c—Piston rod, 72—Swing arm, 73—Spring, 74—Mounting bracket, 74a—Limiting part, 75—Mounting shaft (for damper), 76—Mounting shaft (for swing arm), 77—Connecting shaft, 79—Roller. Detailed Implementation

[0082] Figure 1 , Figure 2 In the diagram, M represents buildings such as apartments. In building M, the upper balcony located on the upper floor is indicated by symbol 1, and the lower balcony located directly below it on the lower floor is indicated by symbol 2.

[0083] The retractable refuge system H is located between balconies 1 and 2, one above the other. (Similarly...) Figure 3 As shown, the refuge device H has a guide column 10 and a lifting platform 20. The guide column 10 is fixedly configured to extend vertically between the upper and lower balconies 1 and 2. The lower end of the guide column 10 is fixed to the lower balcony 2 by a fixing bracket 11.

[0084] The lifting platform 20 moves up and down between the upper balcony 1 and the lower balcony 2, guided by the guide column 10. Therefore, the lifting platform 20 has an opening 20b for the guide column 10 to pass through (see reference). Figure 3 In addition, a buffer 12 is fixed to the upper surface of the aforementioned fixed bracket 11 to cushion the impact after the lifting platform 20 descends.

[0085] When not in use, the lifting platform 20 is stored in the upper balcony 1 (floor slab). Therefore, a square opening 1a is formed in the upper balcony 1, and a square annular frame member 30 is fitted and fixed into this opening 1a. The opening 1a and the corresponding opening 30a of the frame member 30 are set to a size that allows refugees to pass through. Furthermore, the lifting platform 20 is a thin, box-like shape, and is configured to be stored within the frame member 30 through the opening 30a. During this storage, the descent of the lifting platform 20 is restricted by a locking mechanism described below.

[0086] The opening 30a of the frame component 30 is provided by the swing-type cover component 31 (see reference). Figure 3The opening 30a is covered from above. Furthermore, the bottom surface of the lifting platform 20, which is housed within the opening 30a of the frame member 30, covers the opening from below. Additionally, the lifting platform 20 has a flange 20a formed along its entire lower periphery, which abuts against the edge of the opening 30a when housed within it, thereby restricting further upward movement (see also...). Figure 3 , Figure 5 , Figure 19 The position where the lifting platform 20 is restricted from rising within the frame component 30 becomes the predetermined high position.

[0087] The upper surface of the lifting platform 20 is equipped with a folding handrail device 40 (see reference). Figure 3 During evacuation, the handrail device 40 is raised to prevent evacuees riding on the lifting platform 20 from falling.

[0088] like Figure 3 As shown, the guide column 10 is hollow, and a weight 13 is disposed inside it, capable of moving up and down. This weight 13 is connected to the lifting platform 20 via a cable 14. Specifically, a movable pulley 15 is attached to the upper end of the weight 13, while a fixed pulley 16 is attached to the upper end of the guide column 10. Furthermore, one end of the cable 14 is fixed to the upper end of the guide column 10, and the other end is fixed to the lifting platform 20 after passing through the movable pulley 15 and the fixed pulley 16. The weight of the weight 13 is set such that the lifting platform 20 descends both when the evacuee is not in the platform and when the evacuee is in the platform.

[0089] like Figure 4 As shown, a bracket 21 is fixed to the lifting platform 20 around the guide post 10. A rack 17 extending in the vertical direction is integrally formed on one side of the guide post 10, and a pinion 24 is rotatably held in the bracket 21. The pinion 24 meshes with the rack 17 and rotates as the lifting platform 20 moves up and down.

[0090] The centrifugal reduction mechanism (braking mechanism) 23 is connected to the pinion 24 via a one-way clutch 22. The one-way clutch 22 transmits the rotation of the pinion 24 to the reduction mechanism 23 only in the direction of rotation when the lifting platform 20 is descending.

[0091] The use of the refuge device H is performed in the following order. First, open the cover component 31 to open the top of the lifting platform 20. Then, prepare for refuge by raising the folded handrail device 40 to the upright position.

[0092] After evacuation preparations are completed, evacuees who have taken refuge on the upper balcony 1 board the lifting platform 20. Then, by manually releasing the locking mechanism described below, the lifting platform 20 is lowered to the lower balcony 2, overcoming the weight of the load 13, and then transported to the lower balcony 2. A deceleration mechanism 23 prevents the descent speed of the lifting platform 20 from becoming excessive.

[0093] After the evacuees descend from the lower balcony 2 onto the lifting platform 20, the lifting platform 20 rises due to the weight of the load 13, returning to its predetermined height. The evacuation process is then repeated in the above sequence. When the lifting platform 20 returns to its predetermined height, it comes into contact with the frame component 30, but noise and impact are suppressed by the silencing mechanism S described below, and it reliably rises to the predetermined height.

[0094] Next, refer to Figures 4-9 The locking mechanism for locking the lifting platform 20 at a predetermined high position is described below; this locking mechanism is indicated by the symbol R. (See below for details.) Figure 4 , Figure 5 As shown, the locking mechanism R has: a locking member 50; a locking member 51 that engages with and disengages from the locking member 50; a spring 52 that applies force to the locking member 51 in the direction of engagement (locking) with the locking member 51; and a release lever 53 for releasing the locking member 51 from engagement.

[0095] The aforementioned locking component 50 is configured such that the U-shaped component faces laterally, and a pair is provided on the left and right sides of the guide post 10.

[0096] The front end of the engaging component 51 is hook-shaped, and there is a pair on the left and right. Moreover, the pair of engaging components 51 are connected to each other by a release lever 53. The release lever 53 is operated by the evacuee riding on the lifting platform 20 by foot.

[0097] A pair of engaging components 51 (and an integrated release lever 53) are held relative to the bracket 21 of the lifting platform 20 so as to be able to swing about the mounting shaft 54. The aforementioned spring 52 is configured to always be in the engaging direction around the mounting shaft 54. Figures 5-9 Force is applied to the engaging component 51 in a clockwise direction. The release lever 53 has an arc-shaped guide hole 53a centered on the mounting shaft 54. Conversely, the bracket 21 integrally forms a guide pin 21a protruding from the guide hole 53a. The release lever 53, i.e., the engaging component 51, uses the guide pin 21a as a guide to swing around the mounting shaft 54.

[0098] The front end of the engaging member 51 is hook-shaped, and has an engaging portion 51a that engages with the locking member 50 from above and an inclined surface (cam surface) 51b formed on the upper surface. Figure 5This shows the state after the lifting platform 20 is in a lower position and the locking component 51 is below the locking component 50 and the lock is released.

[0099] With the lifting platform 20 from Figure 5 As the state rises, the inclined surface 51b of the engaging component 51 abuts against the lower surface of the locking component 50 (see reference). Figure 6 If the lifting platform 20 rises further from this state, the engaging component 51 will be subjected to a reaction force from the locking component 50, such as... Figure 7 As shown, it swings counterclockwise. With further elevation of the lifting platform 20, the inclined surface 51b disengages from the locking member 50, and the locking member 51 swings clockwise due to the spring 52, thus achieving a locked state where the locking portion 51a of the locking member 51 engages with the locking member 50 (see reference). Figure 8 ). Figure 9 The locked state will be displayed. Figure 8 The main part is magnified.

[0100] Next, the noise reduction mechanism S will be explained. When the lifting platform 20 reaches the predetermined high position (the retracted position into the frame member 30), the noise reduction mechanism S reliably stops the lifting platform 20 at the predetermined high position and reduces the noise when reaching the predetermined high position.

[0101] Reference Figures 10-19 An example of a silencing mechanism S will be explained. A pair of silencing mechanisms S are provided symmetrically on the left and right sides; therefore, the explanation will focus on the left and right sides.

[0102] First, such as Figure 10 , Figure 11 As shown, the lifting platform 20 is provided with a first arm engaging part 61 and a second arm engaging part 62. The first arm engaging part 61 and the second arm engaging part 62 are integrally formed by processing the plate, and their base ends are fixed to the bracket 21 which is integrally formed with the lifting platform 20.

[0103] Each arm engaging portion 61 and 62 extends in the left-right direction and has a small gap in the vertical direction, with the second arm engaging portion 62 located directly above the first arm engaging portion 61. The space formed by the small gap between the upper and lower arm engaging portions 61 and 62 is shown as a storage space 63.

[0104] The length of the first arm engaging portion 61 is longer than the length of the second arm engaging portion 62. That is, the front end of the first arm engaging portion 61 is located further outward in the left-right direction than the front end of the second arm engaging portion 62. Moreover, the upper surface of the front end of the first arm engaging portion 61 (the surface on the side of the second arm engaging portion 62) is formed as an inclined surface 61a that faces upward toward the front end.

[0105] The noise reduction mechanism S also includes a damper 71, a swing arm 72, and a spring 73 as a force-applying unit (see reference). Figure 12 The damper 71 and the swing arm 72 are held in the frame member 30, which is a fixed component.

[0106] Damper 71 is configured as a reciprocating type, such as Figure 12 The device shown includes a cylinder 71a, a piston 71b that slides within the cylinder 71a, and a piston rod 71c that extends integrally from the piston 71b and protrudes outward from the cylinder 71a. A spring 73 is disposed within the cylinder 71a and imparts a force in the direction that causes the damper 71 to shorten.

[0107] The damper 71 provides damping (buffering) by allowing the liquid sealed inside to pass through a damping orifice. In this embodiment, the damping effect occurs only during shortening (when the piston rod 71c moves in the direction where the protrusion length from the cylinder 71a becomes shorter). That is, after an external force is applied that causes the damper 71 to extend against the spring 73, if that external force is released, the damper 71 shortens due to the force of the spring 73, thus providing damping.

[0108] The damper 71 and the swing arm 72 are assembled onto the mounting bracket 74. The mounting bracket 74 is fixed to the inner surface of the frame member 30 by a fastener. The mounting bracket 74 is formed, for example, by machining a metal plate, and is shaped into a roughly "U"-shaped cross-section with an upward opening. A cylinder 71a is disposed within the space surrounded by the roughly "U"-shaped portion of the cross-section. In this state, one end of the cylinder 71a is held rotatably (swingingly) to the mounting bracket 74 by a mounting shaft 75. The base end of the swing arm 72 is held rotatably (swingingly) to the mounting bracket 74 by a mounting shaft 76. Furthermore, the front end of the piston rod 71c is rotatably connected to the middle portion of the swing arm 72 by a connecting shaft 77.

[0109] At the front end of the swing arm 72, a roller 79 is held in a rotatable manner by a mounting shaft 78. The outer diameter of the roller 79 is formed to be able to be inserted into the storage space 63 between the first arm engagement portion 61 and the second arm engagement portion 62.

[0110] Figure 12 , Figure 13 In the diagram, the line connecting the mounting shaft 75, which will become the swing center of the cylinder 71a, and the mounting shaft 76, which will become the swing center of the swing arm 72, is shown as the boundary line α. Figure 12 In this state, the connecting shaft 77, which serves as the connection between the piston rod 71c and the swing arm 72, is positioned directly above the boundary line α. At this time, the force of the spring 73, which aims to shorten the damper 71, acts as a force that causes the swing arm 72 to... Figure 12The force (torque) that swings counterclockwise plays a role.

[0111] on the other hand, Figure 13 This shows the state where the connecting shaft 77 is located slightly below the boundary line α. At this time, the force of the spring 73, which is intended to shorten the damper 71, causes the swing arm 72 to... Figure 12 The force (torque) that causes clockwise oscillation. In this state, such as... Figure 10 , Figure 13 , Figure 14 As shown, the swing arm 72 abuts against the limiting portion 74a formed on the end face of the mounting bracket 74 to limit the swing arm 72 from moving further. Figure 13 It swings clockwise. Furthermore, the force of spring 73 acts as a restraint, causing the swing arm 72 to... Figure 13 The counter-clockwise oscillation force exerts its effect. That is, as long as no external force is applied, the swing arm 72 will remain stationary. Figure 13 The swing position shown is the standby position of the swing arm 72.

[0112] As described above, the swing direction of the swing arm 72 changes based on the force of the spring 73 when the connecting shaft 77 is above and below the boundary line α. Furthermore, when the connecting shaft 77 is on the boundary line α, the force of the spring 73 does not function as a force causing the swing arm 72 to swing. Additionally, the mounting bracket 74 also serves to limit the swing arm 72 from exceeding the standby position. Figure 13 The function of the limiting component that swings clockwise is that of the limiting component, but the limiting component can also be constituted by a component that is set independently of the mounting bracket 74 (for example, the limiting component is configured to directly abut against the swing arm 72).

[0113] The aforementioned first arm engaging portion 61 is always located below the front end of the swing arm 72 (the held roller 79).

[0114] Next, refer to Figures 14-19 The function of the silent mechanism S during the process of the lifting platform 20 located on the lower balcony 2 rising toward the upper balcony 1 (a predetermined high position) will be explained.

[0115] first, Figure 14 This shows the state after the first arm engaging portion 61 has just come into contact with the front end (roller 79) of the swing arm 72, which is in the standby position from below.

[0116] Since the front end of the swing arm 72, which is in the standby position, faces downward, the first arm engaging portion 61 reliably abuts (is captured) against the roller 79.

[0117] If the lifting platform 20 is from Figure 14 If the state further increases, then the swing arm 72 will move towards Figure 14The roller 79 swings counterclockwise, and simultaneously moves along the inclined surface 61a of the first arm engaging portion 61 towards the base end of the first arm engaging portion 61, thus becoming... Figure 15 The state shown. In Figure 15 In this state, the connecting shaft 77 is located above the boundary line α, and the swing arm 72 is tilted towards the boundary line α by the force of the spring 73. Figure 15 It swings counterclockwise. At this time, the damper 71 is in a state where it is shortening while playing a buffering role.

[0118] If the lifting platform 20 is from Figure 15 If the state rises further, it will become Figure 16 At this state, roller 79 is in contact with the lower surface of the second locking hole 62. The swing arm 72 is subjected to force by the spring 73. Figure 16 The force that causes it to swing counterclockwise, thus... Figure 17 As shown, roller 79 moves toward the depth of the receiving space 63, and the force of spring 72 acts as a force in the direction of raising the lifting platform 20 via swing arm 72 and second arm engagement part 62. However, due to the shortening of damper 71, the lifting platform 20 rises in a state of attenuation. Figure 17 In the state shown, in the locking mechanism R, the state is that the inclined surface 51b of the engaging member 51 just comes into contact with the locking member 50. Figure 6 (The state shown).

[0119] Figure 18 The lifting platform 20 is shown from Figure 17 The state of the platform rising and the lifting platform 20 about to reach the predetermined high position. Figure 18 In the state shown, the locking mechanism R is in the state just before it is locked. Figure 7 (The state shown).

[0120] Figure 19 The lifting platform 20 is shown from Figure 18 The state after the state rises further and reaches the predetermined high position. Figure 19 In the state shown, the locking mechanism R is locked. Figure 8 , Figure 9 (The state shown).

[0121] Thus, during the process of the lifting platform 20 rising towards the predetermined high position, it is buffered by the damper 71, and the force of the spring 72 applies a force in the upward direction to the lifting platform 20, thereby suppressing noise and impact when the lifting platform 20 comes into contact with the frame component 30 at the predetermined high position. Furthermore, the force exerted by the spring 73 to raise the lifting platform 20 ensures that the lifting platform 20 reliably reaches the predetermined high position, thereby enabling the locking mechanism R to lock reliably.

[0122] Figures 20-22 A second embodiment of the invention is shown, and a variation of the mute mechanism is also shown. Figures 20-22 In this document, the same symbols are used to mark the same components as in the above embodiments, but the silent mechanism is indicated by the symbol S2.

[0123] Figure 20 and Figure 4 Corresponding (wherein, parts other than the mute mechanism S2 are shown in a simplified manner). Figure 21 and Figure 19 Correspondingly, the state of the lifting platform 20 after it reaches the predetermined high position is shown. Figure 22 and Figure 14 Correspondingly, the state is shown after the first arm engaging part 61 has just come into contact with the swing arm 72 which is in the standby position.

[0124] In the second embodiment, the first arm engaging portion 61 and the second arm engaging portion 62 constituting the silent mechanism S2 (corresponding to the silent mechanism S) are fixed to a fixed member (in this embodiment, a frame member 30) located near a predetermined high position. Furthermore, a damper 71 with a spring 73 and a swing arm 72 are provided on the lifting platform 20. That is, a mounting bracket 74 with the damper 71 and the swing arm 72 is fixed to the lifting platform 20.

[0125] In the second embodiment, the first arm engaging portion 61 is located above the second arm engaging portion 62. Furthermore, the first arm engaging portion 61 is always located above the swing arm 72 (the roller 79 held at its front end). Figure 22 As shown, when the swing arm 72 is in the standby position, the front end of the swing arm 72 faces upward.

[0126] In the second embodiment, if the lifting platform 20 (i.e., the mounting bracket 74) rises, then as Figure 22 As shown, the swing arm 72 abuts against the first arm engagement portion 61, and the swing arm 72 swings downward. Furthermore, as the lifting platform 20 rises, the force of the spring 73 within the damper 71 acts as a force pressing the second arm engagement portion 62 downward via the swing arm 72 (its reaction force acts as a force that raises the lifting platform 20), and the lifting platform 20 slowly reaches its destination while being dampened by the damper 71. Figure 21 The predetermined high position is shown. In this way, the silent mechanism S2 is the same as the silent mechanism S, and while being buffered by the damper 71, the lifting platform 20 is raised to the predetermined high position by the spring 73.

[0127] The embodiments have been described above, but the present invention is not limited to these embodiments, and appropriate modifications can be made within the scope of the claims. The damper 71 can also generate a damping force during elongation. In this case, for example in… Figure 14 In the figure, the position of the mounting shaft 75, which will become the swing fulcrum of the cylinder 71a, should be set to be further to the right than the mounting shaft 76, which will become the swing fulcrum of the swing arm 72.

[0128] The damper 71 is not limited to a reciprocating type; it can also be a rotary type that rotates according to the swing of the swing arm 72. The spring 73, which serves as the force-applying unit, can also be disposed externally to the damper 71 instead of being assembled inside it. The damper 71 can also be a damper that generates attenuating forces during both shortening and extension. In this case, when the locking mechanism R is released and the lifting platform 20 descends from a predetermined high position, the attenuating effect of the damper 71 can suppress a rapid descent.

[0129] The lifting action of the lifting platform 20 can be performed not only by using the weight 13, but also by appropriate methods such as manual operation using a force-amplifying mechanism, by an actuator operating using accumulated fluid pressure (pneumatic or hydraulic), or by an electric actuator. It is also possible to appropriately combine any two or more of the above methods. Of course, the purpose of this invention is not limited to the explicitly stated contents, but also implicitly includes providing substantially preferred or advantageous features.

[0130] Industrial availability

[0131] The present invention is suitable as a lifting refuge device for buildings.

Claims

1. A lifting refuge device, characterized in that, have: A lifting platform that moves up and down between a predetermined high position in a building that serves as a refuge site and a low position below that high position, where refugees ride. A swing arm, which is mounted on one side of the fixed component located at the aforementioned high position and the aforementioned lifting platform; A damper, which is connected to the swing arm; The force-applying unit applies a force to the swing arm in a predetermined direction; The first arm engaging portion is located on the other side of the aforementioned fixing component and the aforementioned lifting platform; and The second arm engaging portion is positioned vertically spaced from the first arm engaging portion. The swing position of the aforementioned swing arm is set to a predetermined boundary position, and the swing direction of the swing arm is changed based on the force applied by the aforementioned force unit. Furthermore, the swing arm can achieve a standby position at the boundary position or after swinging to a position further away from the boundary position and stopping its swing. During the process of the lifting platform rising to the aforementioned high position, the first arm engaging portion abuts against the swing arm located in the aforementioned standby position, causing the swing arm to swing to the other side. This is where it is cushioned by the aforementioned damper. After the swing arm swings to a position further to the other side than the aforementioned boundary position, the force applied by the aforementioned force unit acts as a force from the swing arm through the aforementioned second arm engaging portion, causing the lifting platform to rise, and the lifting platform reaches the aforementioned high position. As the lifting platform descends from the aforementioned high position, the second arm engaging portion abuts against the aforementioned swing arm, causing the swing arm to swing toward the aforementioned standby position, and then the abutment with the swing arm is released.

2. The lifting refuge device according to claim 1, characterized in that, The aforementioned damper, swing arm, and force application unit are respectively disposed on the aforementioned fixed component. The aforementioned first arm engaging portion and the aforementioned second arm engaging portion are respectively provided on the aforementioned lifting platform. The aforementioned first arm engaging portion is located below the aforementioned second arm engaging portion. The front end of the swing arm, located in the aforementioned standby position, faces downwards.

3. The lifting refuge device according to claim 1, characterized in that, The aforementioned damper, swing arm, and force application unit are respectively installed on the aforementioned lifting platform. The first arm engaging portion and the second arm engaging portion are respectively provided on the aforementioned fixing component. The first arm engaging portion is located above the second arm engaging portion. The front end of the swing arm, located in the aforementioned standby position, faces upward.

4. The lifting refuge device according to any one of claims 1 to 3, characterized in that, A rotatable roller is maintained at the front end of the aforementioned swing arm. The first arm engaging portion and the second arm engaging portion abut against the swing arm via the roller.

5. The lifting refuge device according to any one of claims 1 to 4, characterized in that, The surface of the first arm engaging portion that abuts against the swing arm is an inclined surface, which is inclined toward the second arm engaging portion as it moves toward the front end.

6. The lifting refuge device according to any one of claims 1 to 5, characterized in that, The base end of the aforementioned swing arm is rotatably held in the mounting bracket. The damper is configured as a reciprocating type, with one end rotatably mounted on the mounting bracket and the other end rotatably connected to the swing arm.

7. The lifting refuge device according to any one of claims 1 to 6, characterized in that, It is equipped with a locking mechanism for locking the aforementioned lifting platform at the aforementioned high position. The aforementioned locking mechanism includes a locking component fixedly disposed at the aforementioned high position, and an engaging component disposed on the aforementioned lifting platform and engaged with the locking component at the aforementioned high position. During the process of the lifting platform rising towards the higher position, after the swing arm just comes into contact with the first arm engaging part, it becomes the state before the engaging part and the locking part engage. After the swing arm comes into contact with the second arm engaging part, the engaging part engages with the locking part.

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