JP7402126B2 - Elevating evacuation device - Google Patents

Description

The present invention relates to an elevating evacuation device.

BACKGROUND ART Buildings are equipped with evacuation devices for evacuating from high positions (upper floors) to lower positions (lower floors) in the event of a disaster such as a fire, and some of these evacuation devices are of a lifting type.

Patent Document 1 discloses an elevating evacuation device. Patent Document 1 discloses the following technical content. That is, an elevating pedestal is provided that can be moved up and down between a high position and a low position using a guide post extending in the vertical direction as a guide. The evacuee transfers to the elevating frame at the high position, and the elevating frame is lowered to the lower position with the evacuee on board. After the evacuee gets off the elevating frame at the low position, the elevating frame is raised to the high position. The above steps are repeated, and the evacuees are sequentially transferred from high positions to low positions. It has also been disclosed that the elevating frame located at a low position is raised by using the weight of a weight connected to the elevating frame.

Patent Document 1 also discloses that a mechanical locking mechanism is provided in order to prevent the elevating frame from being inadvertently lowered from a predetermined high position. It is also disclosed that this locking mechanism is automatically locked when the elevating frame rises to a high position, but is also unlocked by manual operation.

The elevated elevating pedestal is stopped at a predetermined high position, but when this is stopped, the elevating pedestal is likely to come into contact with a member located at a high position and generate noise. Patent Document 2, which discloses an elevating evacuation device, discloses an evacuation device in which a cushion (spring) is provided at a high position to alleviate the impact of a box (corresponding to an elevating frame) that reaches a high position. Further, Patent Document 3, which discloses an elevating type evacuation device, discloses an evacuation device that is provided with a buffer means (spring, damper, rubber) at a low position against which a gondola (corresponding to an elevating frame) comes into contact.

JP2014-207940A Japanese Patent Application Publication No. 2011-72767 Japanese Patent Application Publication No. 2003-118951

A damper provided to reduce noise when the elevating pedestal rises to a high position generates a reaction force in the direction of pushing down the elevating pedestal that is about to rise, thereby performing a buffering effect. Then, due to the reaction force of the damper, a situation may occur in which the elevating frame stops at a position slightly lower than the predetermined high position. In this case, not only will the requirement to keep the elevating frame stopped at a predetermined high position not only be met, but also there is a risk that the locking action of the locking mechanism that is set to be activated at a high position will not be ensured. .

In order to ensure that the locking mechanism is locked at a high position, it is conceivable to increase the force and rate at which the elevating frame is raised. However, in this case, the problem of noise when the elevating pedestal is at a high position increases. In particular, during evacuation drills, it is preferable to repeatedly move the elevating pedestal up and down in order to familiarize the user with its ease of use. This could lead to a situation in which evacuation drills that require the use of emergency equipment are not conducted.

In order to satisfy both the noise suppression when the rising elevating frame reaches a high position and ensuring that the elevating frame stops at a high position, the elevating frame must be raised slowly and reliably to a predetermined high position. However, it is difficult to satisfy such requirements simply by using a damper.

The present invention has been made in consideration of the above circumstances, and is an elevating platform that can reliably raise an elevating frame to a predetermined high position, and can also suppress noise when reaching the predetermined high position. The objective is to provide a type of evacuation device.

In order to achieve the above object, the present invention adopts the following solution method. That is,
an elevating frame that is moved up and down between a predetermined high position serving as an evacuation area of a building and a low position below the high position, and on which an evacuee is placed;
A swinging arm provided on one of the fixed member at the high position and the elevating frame, a damper connected to the swinging arm, and a biasing force that applies a biasing force in a predetermined direction to the swinging arm. force means and
a first arm engaging portion provided on the other of the fixing member and the elevating frame; and a second arm engaging portion vertically spaced apart from the first arm engaging portion;
Equipped with
The swinging position of the swinging arm is set so that the swinging direction of the swinging arm is changed by the urging force of the urging means when a predetermined boundary position is reached, and the swinging arm is It is possible to take a standby position in which the rocking is stopped at the boundary position or a position swung to one side thereof, and in the process until the elevating frame is raised to the high position, The first arm engaging portion contacts the swing arm in the standby position and swings the swing arm to the other side, thereby receiving a buffering effect from the damper and moving the swing arm toward the boundary. After the elevating pedestal is swung to the other side from the position, the energizing force of the energizing means acts as a force to raise the elevating pedestal from the swinging arm via the second arm engaging portion. is considered to be the high position,
As the elevating frame is lowered from the high position, the second arm engaging portion contacts the swinging arm and swings the swinging arm toward the standby position; contact with the swinging arm is released;
It's like this.

According to the above-mentioned solution method, when the elevating frame rises from near a predetermined high position to the predetermined high position, the first arm engaging portion swings the swinging arm in the standby position to provide a buffering effect to the damper. By shifting to a state in which this is achieved, the elevating pedestal is slowly raised, and the generation of noise when the elevating pedestal reaches a predetermined high position is suppressed. In addition, when the damper's damping effect is exerted, the biasing force of the biasing means acts as a force to raise the elevating pedestal via the second arm engagement portion, so that the elevating pedestal can be moved slowly and reliably to a predetermined position. It can be in a high position. Furthermore, when the elevating frame is lowered from a predetermined high position, the second arm engaging portion returns the swinging arm to the standby position, and the damper acts as a buffer when the elevating frame is raised next time. It is possible to make preparations for obtaining this and to cause the biasing means to store a biasing force for raising the elevating frame.

A preferred first aspect based on the above solution method is as follows.

The damper, the swing arm, and the biasing means are each provided on the fixed member,
The first arm engaging portion and the second arm engaging portion are each provided on the elevating frame,
the first arm engaging part is located below the second arm engaging part,
The tip of the swinging arm in the standby position is directed downward;
You can do it like this. According to the first aspect, the damper, the swing arm, and the biasing means, which are relatively complicated structural parts, are provided on the fixed member at a predetermined high position, so that the structure of the elevating frame can be avoided from becoming complicated. It becomes desirable. In addition, by keeping the tip of the swinging arm in the standby position facing downward, it is preferable to ensure that the swinging arm is swung by the first arm engagement part when the elevating platform is raised. Become.

A preferred second aspect based on the above solution method is as follows.

The damper, the swing arm, and the biasing means are each provided on the elevating frame,
The first arm engaging portion and the second arm engaging portion are each provided on the fixing member,
the first arm engaging part is located above the second arm engaging part,
The tip of the swinging arm in the standby position is directed upward;
You can do it like this. According to the second aspect, the damper, the swing arm, and the biasing means, which are relatively complicated structural parts, are arranged together on the elevating frame, and the structure of the fixed member at or near a predetermined high position is achieved. This is preferable in terms of simplifying the process. In addition, by keeping the tip of the swinging arm in the standby position facing upward, it is preferable to ensure that the swinging arm is swung by the first arm engaging portion when the elevating platform is raised. Become.

A third preferable aspect based on the above-mentioned solution method is as follows.

A rotatable roller is held at the tip of the swing arm,
the first arm engaging portion and the second arm engaging portion are brought into contact with the swinging arm via the roller;
You can do it like this. According to the third aspect, by bringing each arm engaging portion into contact with the swinging arm via the roller, the impact at the time of this contact can be alleviated, and the swinging arm can respond to the swinging of the swinging arm after the contact. The roller can be smoothly moved along each arm engaging portion.

A preferred fourth aspect based on the above solution method is as follows.

A surface of the first arm engaging portion that comes into contact with the swinging arm is an inclined surface that is inclined toward the second arm engaging portion as it goes toward the tip. be able to. According to the fourth aspect, the tip of the first arm engaging portion can be reliably brought into contact with the swinging arm, and after this contact, the tip of the first arm engaging portion can be brought into contact with the swinging arm in response to the swinging of the swinging arm. This is preferable for smooth guidance toward the base end side of the one-arm engaging portion.

A preferred fifth aspect based on the above solution method is as follows.

a base end of the swing arm is rotatably held by a mounting bracket;
The damper is of a reciprocating type, and one end thereof is rotatably attached to the mounting bracket, and the other end is rotatably connected to the swing arm.
You can do it like this. According to the above aspect, by assembling the damper and the swing arm to the mounting bracket in advance, it is preferable to improve the accuracy of assembling the damper and the swing arm and to facilitate the work of mounting the damper and the swing arm in a predetermined position. becomes.

A preferred sixth aspect based on the above solution method is as follows.

comprising a locking mechanism for locking the elevating frame at the high position,
The locking mechanism includes a locking member fixedly installed at the high position, and an engagement member provided on the elevating frame and engaged with the locking member at the high position,
Immediately after the swing arm abuts the first arm engagement portion in the process of the elevating frame rising toward the high position, the engagement member engages with the locking member. the engaging member is engaged with the locking member after the swing arm abuts the second arm engaging portion;
You can do it like this. According to the sixth aspect, the elevating frame is slowly and reliably raised to a predetermined high position, so that the locking mechanism can be reliably locked at the predetermined high position. This is preferable in terms of preventing the situation where the elevating pedestal is inadvertently lowered when the elevating pedestal is at a predetermined high position.

According to the present invention, the elevating frame can be reliably raised to a predetermined high position, and the noise generated when reaching the predetermined high position can also be suppressed.

FIG. 1 is an upper perspective view showing a balcony portion of a building to which the present invention is applied. FIG. 2 is a lower perspective view of the balcony portion of FIG. 1 viewed from below. FIG. 1 is a simplified side view showing an overall outline of the present invention. FIG. 3 is a perspective view of a main part of the elevating frame showing the structure near the guide post. FIG. 3 is a side view showing the locking mechanism. FIG. 7 is a side view showing a state immediately after the engaging member in the locking mechanism contacts the locking member from below. FIG. 7 is a side view showing a state where the elevating frame has slightly risen from the state shown in FIG. 6 and the engaging member of the locking mechanism is just before being engaged with the locking member. FIG. 8 is a side view showing a state in which the elevating frame has been raised to a predetermined high position from the state shown in FIG. 7 and the engaging member in the locking mechanism is engaged with the locking member. FIG. 6 is an enlarged side view showing a state in which the engaging member is engaged with the locking member. FIG. 7 is a front view showing the silent mechanism portion, with the elevating frame positioned below a predetermined high position. FIG. 3 is a front view showing the silent mechanism part, with the elevating frame at a predetermined high position. FIG. 3 is a side view showing the relationship between a swing arm, a damper, and a biasing means. FIG. 7 is a side view showing the relationship between the swing arm and the damper, and showing a state when the elevating frame is in a standby position. FIG. 7 is a diagram showing the operating state of the noise-silencing mechanism, and shows the state immediately after the elevating frame has been raised and the first arm engaging portion has come into contact with the roller held at the tip of the swinging arm. FIG. 15 is a view showing the operating state of the silent mechanism, and shows a state in which the elevating frame has risen slightly from the state shown in FIG. 14 and the first arm engaging portion is pressing the swinging arm upward. 16 is a diagram illustrating the operating state of the silent mechanism, and shows the state immediately after the elevating frame has risen slightly from the state shown in FIG. 15 and the swing arm has come into contact with the second arm engaging portion. FIG. FIG. 17 is a view showing the operating state of the silent mechanism, and shows a state in which the elevating frame has been slightly raised from the state shown in FIG. 16 and the swing arm is pressing the second arm engaging portion upward. 18 is a diagram showing the operating state of the silent mechanism, and shows a state immediately before the elevating pedestal rises slightly from the state shown in FIG. 17 and reaches a predetermined high position; FIG. FIG. 19 is a diagram showing the operating state of the silent mechanism, and shows the state when the elevating frame further rises from the state shown in FIG. 18 and reaches a predetermined high position. FIG. 5 is a perspective view corresponding to FIG. 4 and showing a second embodiment of the present invention. FIG. 20 is a diagram corresponding to FIG. 19, showing a second embodiment of the present invention. FIG. 15 shows a second embodiment of the present invention and corresponds to FIG. 14;

In FIGS. 1 and 2, M is a building such as an apartment. In the building M, the upper veranda on the upper floor is indicated by numeral 1, and the lower balcony on the lower floor directly below it is indicated by numeral 2.

An elevating evacuation device H is constructed between the upper and lower balconies 1 and 2. This evacuation device H has a guide post 10 and an elevating frame 20, as also shown in FIG. The guide post 10 is fixedly arranged to extend in the vertical direction between the upper and lower balconies 1 and 2. The lower end of the guide post 10 is fixed to the lower balcony 2 by a fixing bracket 11.

The elevating frame 20 is moved up and down between the upper balcony 1 and the lower balcony 2 using the guide post 10 as a guide. For this reason, the elevating frame 20 is formed with an opening 20b (see FIG. 3) through which the guide post 10 passes. Note that a cushion material 12 is fixed to the upper surface of the fixing bracket 11, which comes into contact with the elevating frame 20 when it is lowered, and cushions the impact.

The elevating frame 20 is normally stored in (the floor slab of) the upper balcony 1 when it is not in use. For this reason, a rectangular opening 1a is formed in the upper balcony 1, and a rectangular 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 an evacuee to pass through. The elevating frame 20 has a thin box shape and is housed in the frame member 30 through the opening 30a. During this storage, the lowering of the elevating frame 20 is regulated by a lock mechanism described later.

The opening 30a of the frame member 30 is covered from above by a swingable cover member 31 (see FIG. 3). Furthermore, the opening 30a is covered from below by the bottom surface of the elevating frame 20 housed in the opening 30a of the frame member 30. In addition, the elevating frame 20 has a flange portion 20a formed on the entire periphery of its lower end surface, and when stored in the opening 30a, it comes into contact with the edge of the opening 30a and cannot be lifted further. (See also Figures 3, 5, and 19). The position within the frame member 30 where the rise of the elevating frame 20 is restricted is a predetermined high position.

A foldable handrail device 40 (see FIG. 3) is provided on the upper surface of the elevating frame 20. When evacuating, the handrail device 40 is erected to prevent the evacuees on the elevating platform 20 from falling.

As shown in FIG. 3, the guide post 10 is hollow, and a weight 13 is disposed inside the guide post 10 so as to be movable up and down. This weight 13 is interlocked with an elevating frame 20 via a wire 14. Specifically, a movable pulley 15 is held at the upper end of the weight 13, while a fixed pulley 16 is held at the upper end of the guide post 10. One end of the wire 14 is fixed to the upper end of the guide post 10, and the other end is fixed to the elevating frame 20 after passing through a movable pulley 15 and a fixed pulley 16. The weight of the weight 13 is set so that the elevating frame 20 with no evacuee on it is lowered, and the elevating frame 20 with an evacuee on it is lowered.

As shown in FIG. 4, a bracket 21 is fixed to the elevating frame 20 so as to surround the guide post 10. As shown in FIG. A rack 17 extending in the vertical direction is integrally formed on one surface of the guide post 10, while a pinion 24 is rotatably held on the bracket 21. The pinion 24 is engaged with the rack 17 and is rotated as the elevating frame 20 is moved up and down.

A centrifugal speed reduction mechanism (brake 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 deceleration mechanism 23 only in the direction of rotation when the elevating frame 20 is lowered.

The evacuation device H is used in the following steps. First, the lid member 31 is opened to open the upper part of the elevating pedestal 20. Thereafter, evacuation preparations are completed by setting the handrail device 40 in the folded state to the upright position.

After evacuation preparations are completed, the evacuees who have evacuated to the upper balcony 1 board the elevating platform 20. Thereafter, by manually releasing a locking mechanism which will be described later, the elevating frame 20 is lowered to the lower balcony 2 against the weight of the weight 13 and transported to the lower balcony 2. The speed reduction mechanism 23 prevents the lowering speed of the elevating frame 20 from becoming too large.

After the evacuee gets off the elevating frame 20 on the lower balcony 2, the elevating frame 20 is raised by the weight of the weight 13 and returned to a predetermined high position. After this, evacuation is repeatedly performed in the procedure described above. When the elevating pedestal 20 returns to a predetermined high position, the elevating pedestal 20 comes into contact with the frame member 30, but the noise and shock at that time are suppressed by the noise reduction mechanism S described later, and the elevating pedestal 20 is reliably returned to the predetermined high position. be raised to a higher position.

Next, a locking mechanism for locking the elevating frame 20 at a predetermined high position will be described with reference to FIGS. 4 to 9, and this locking mechanism is designated by the symbol R. As shown in FIGS. 4 and 5, the locking mechanism R includes a locking member 50, an engaging member 51 that is engaged and disengaged from the locking member 50, and a locking member 51 that is engaged with and disengaged from the locking member 51. It has a spring 52 that urges in the (locked) direction, and a release lever 53 that disengages the engagement member 51.

A pair of the locking members 50 are provided on the left and right side surfaces of the guide post 10, and have a U-shaped member oriented laterally.

The engaging members 51 have hook-shaped distal ends and are provided in pairs on the left and right. The pair of left and right engaging members 51 are connected to each other by a release lever 53. The release lever 53 is operated by stepping on the evacuee who is on the elevating frame 20.

A pair of left and right engaging members 51 (and a release lever 53 integrated therewith) are held to be swingable about a mounting shaft 54 with respect to the bracket 21 of the elevating frame 20 . The spring 52 is disposed so as to surround the mounting shaft 54, and always urges the engagement member 51 in the engagement direction (clockwise in FIGS. 5 to 9). The release lever 53 is formed with an arcuate guide hole 53a centered on the mounting shaft 54, and the bracket 21 is integrated with a guide pin 21a that projects inside the guide hole 53a. The release lever 53, that is, the engagement member 51 is swung about the mounting shaft 54 using the guide pin 21a as a guide.

The distal end of the engaging member 51 is hook-shaped and has an engaging portion 51a that is engaged with the locking member 50 from above, and an inclined surface (cam surface) 51b formed on the upper surface. FIG. 5 shows a state in which the elevating frame 20 is in a low position and the engaging member 51 is located below the locking member 50 and is unlocked.

As the elevating frame 20 rises from the state shown in FIG. 5, the inclined surface 51b of the engagement member 51 comes into contact with the lower surface of the locking member 50 (see FIG. 6). When the elevating frame 20 further rises from this state, the engaging member 51 receives a reaction force from the locking member 50 and swings counterclockwise as shown in FIG. 7 . As the elevating frame 20 further rises, the inclined surface 51b is disengaged from the locking member 50, and the engaging member 51 is swung clockwise by the spring 52, so that the engaging portion 51a of the engaging member 51 is attached to the locking member. 50 (see FIG. 8). FIG. 9 shows an enlarged view of the main part of FIG. 8 showing the locked state.

Next, the silent mechanism S will be explained. The silent mechanism S reliably stops the elevating frame 20 at a predetermined high position when the elevating frame 20 reaches a predetermined high position (the stored position in the frame member 30), and also stops the elevating frame 20 at a predetermined high position. It reduces noise.

An example of the silent mechanism S will be described with reference to FIGS. 10 to 19. Since a pair of silent mechanisms S are provided symmetrically, the description will focus on one of the left and right sides.

First, as shown in FIGS. 10 and 11, the elevating frame 20 is provided with a first arm engaging part 61 and a second arm engaging part 62. The first arm engaging portion 61 and the second arm engaging portion 62 are integrally formed by processing a plate material, and their base ends are fixed to the bracket 21 integrated with the elevating frame 20. ing.

The arm engaging portions 61 and 62 extend in the left-right direction and are spaced apart from each other in the vertical direction, with the second arm engaging portion 62 being located directly above the first arm engaging portion 61. has been done. A space formed at a small distance between the upper and lower arm engaging portions 61 and 62 is shown as a storage space 63.

The length of the first arm engaging portion 61 is longer than the length of the second arm engaging portion 62. That is, the distal end position of the first arm engaging portion 612 is located further outward in the left-right direction than the distal end position of the second arm engaging portion 62. The upper surface of the distal end portion of the first arm engaging portion 61 (the surface on the second arm engaging portion 62 side) is an inclined surface 61a that is positioned upward toward the distal end.

The silent mechanism S further includes a damper 71, a swing arm 72, and a spring 73 (see FIG. 12) as a biasing means. The damper 71 and the swing arm 72 are held by the frame member 30 as a fixed member.

The damper 71 is of a reciprocating type and, as shown in FIG. 12, includes a cylinder 71a, a piston 71b that slides within the cylinder 71a, and a piston that extends integrally from the piston 71b and projects to the outside of the cylinder 71a. It has a rod 71c. The spring 73 is disposed within the cylinder 71a and applies a biasing force in the direction of contracting the damper 71.

The damper 71 performs a damping action (buffering action) when the liquid sealed inside passes through an orifice. It exerts a damping effect only when moving in the direction). That is, when an external force is applied to extend the damper 71 against the spring 73 and the external force is released, the damper 71 is contracted by the biasing force of the spring 73 and exhibits a damping effect.

The damper 71 and the swing arm 72 are assembled to a mounting bracket 74. The mounting bracket 74 is fixed to the inner surface of the frame member 30 by a fixture. The mounting bracket 74 is formed, for example, by processing a single metal plate, and has a substantially U-shaped cross section that is open upward. With the cylinder 71a disposed in the space surrounded by the section having a substantially U-shaped cross section, one end of the cylinder 71a is held on the mounting bracket 74 so as to be rotatable (swingable) by the mounting shaft 75. has been done. Further, a base end portion of the swing arm 72 is rotatably (swingably) held by a mounting bracket 74 by a mounting shaft 76 . The tip of the piston rod 71c and the intermediate portion of the swing arm 72 are rotatably connected by a connecting shaft 77.

A roller 79 is rotatably held at the tip of the swing arm 72 by a mounting shaft 78 . The outer diameter of this roller 79 is set to a size that allows it to be inserted into the storage space 63 between the first arm engaging part 61 and the second arm engaging part 62.

In FIGS. 12 and 13, a line connecting the mounting shaft 75, which is the center of swing of the cylinder 71a, and the mounting shaft 76, which is the center of swing of the swing arm 72, is shown as a boundary line α. In FIG. 12, the connecting shaft 77, which is the connecting portion between the piston rod 71c and the swing arm 72, is located above the boundary line α. At this time, the biasing force of the spring 73 that tends to retract the damper 71 acts as a force (moment) that causes the swing arm 72 to swing counterclockwise in FIG. 12 .

On the other hand, FIG. 13 shows a state in which the connecting shaft 77 is located slightly below the boundary line α. At this time, the biasing force of the spring 73 that tends to retract the damper 71 becomes a force (moment) that causes the swing arm 72 to swing clockwise in FIG. 12 . In this state, as shown in FIG. 10, FIG. 13, and FIG. Swinging in the clockwise direction is restricted. The biasing force of the spring 73 acts as a force that restricts the swinging arm 72 from swinging in the counterclockwise direction in FIG. 13. That is, the swing arm 72 continues to be stopped at the swing position shown in FIG. 13 unless an external force is applied, and the swing position of the swing arm 72 at this time is set as the standby position.

As described above, the direction of swinging of the swinging arm 72 based on the biasing force of the spring 73 is changed depending on whether the connecting shaft 77 is above or below the boundary line α. Note that when the connecting shaft 77 is located on the boundary line α, the biasing force of the spring 73 does not act as a force for swinging the swing arm 72. The mounting bracket 74 also functions as a stopper member that prevents the swinging arm 72 from swinging in the clockwise direction in FIG. 13 beyond the standby position. It may be configured by a member provided separately from the swing arm 74 (for example, a stopper member may be configured to directly abut the swing arm 72).

The first arm engaging portion 61 described above is always located below the tip of the swinging arm 72 (the roller 79 held there).

Next, the operation of the noise reduction mechanism S during the process in which the elevating frame 20 located on the lower balcony 2 rises toward the upper balcony 1 (a predetermined high position) will be described with reference to FIGS. 14 to 19.

First, FIG. 14 shows a state immediately after the first arm engaging portion 61 contacts the tip (roller 79 thereof) of the swing arm 72 in the standby position from below.
Since the tip of the swinging arm 72 in the standby position is directed downward, the first arm engaging portion 61 is reliably brought into contact with (caught by) the roller 79 .

When the elevating frame 20 further rises from the state shown in FIG. 14, the swinging arm 72 swings counterclockwise in FIG. is moved toward the proximal end of the first arm engaging portion 61 along the direction shown in FIG. 15. In the state shown in FIG. 15, the connecting shaft 77 is positioned above the boundary line α, and the swing arm 72 swings counterclockwise in FIG. 15 by the biasing force of the spring 73. At this time, the damper 71 is in a state where it exhibits a buffering effect while being contracted.

When the elevating frame 20 is further raised from the state shown in FIG. 15, it becomes the state shown in FIG. 16. At this time, the roller 79 is brought into contact with the lower surface of the second locking hole 62 . Since the swinging arm 72 receives the force of swinging counterclockwise in FIG. 16 by the spring 73, the roller 79 moves toward the back of the storage space 63, as shown in FIG. At the same time, the urging force of the spring 72 acts as a force in the direction of raising the elevating frame 20 via the swing arm 72 and the second arm engaging portion 62. However, since the damper 71 is retracted, the elevating frame 20 rises with the damping effect exerted. In the state shown in FIG. 17, the locking mechanism R is in a state immediately after the inclined surface 51b of the engagement member 51 contacts the locking member 50 (the state shown in FIG. 6).

FIG. 18 shows a state in which the elevating pedestal 20 has been raised from the state shown in FIG. 17 and is just before the predetermined high position. In the state shown in FIG. 18, the locking mechanism R is in a state immediately before being locked (the state shown in FIG. 7).

FIG. 19 shows a state in which the elevating frame 20 has further risen from the state shown in FIG. 18 and has reached a predetermined high position. In the state shown in FIG. 19, the lock mechanism R is in a locked state (the state shown in FIGS. 8 and 9).

In this way, in the process of raising the elevating pedestal 20 toward a predetermined high position, a force in the upward direction is applied to the elevating pedestal 20 by the biasing force of the spring 72 while receiving a buffering effect from the damper 71. Noise and shock when the elevating frame 20 comes into contact with the frame member 30 at a predetermined high position are suppressed. Furthermore, the force applied by the spring 73 to raise the elevating pedestal 20 can reliably bring the elevating pedestal 20 to a predetermined high position, and the locking mechanism R can be reliably locked.

20 to 22 show a second embodiment of the present invention, and show modified examples of the silent mechanism. In FIGS. 20 to 22, the same components as those in the embodiment described above are given the same reference numerals, and the silent mechanism is indicated by the reference numeral S2.

FIG. 20 corresponds to FIG. 4 (however, parts other than the silent mechanism S2 are shown in a simplified manner). FIG. 21 corresponds to FIG. 19 and shows a state in which the elevating frame 20 is at a predetermined high position. FIG. 22 corresponds to FIG. 14 and shows a state immediately after the first arm engaging portion 61 comes into contact with the swing arm 72 in the standby position.

In the second embodiment, the first arm engaging portion 61 and the second arm engaging portion 62 that constitute the silent mechanism S2 (corresponding to the silent mechanism S) are connected to a fixed member (in the embodiment In this case, it is fixed to the frame member 30). Further, a damper 71 incorporating a spring 73 and a swing arm 72 are provided on the elevating frame 20. That is, the mounting bracket 74 to which the damper 71 and the swing arm 72 are assembled is fixed to the elevating frame 20.

In the case of the second embodiment, the first arm engaging portion 61 is located above the second arm engaging portion 62. Further, the first arm engaging portion 61 is always located above the swinging arm 72 (the roller 79 held at the tip thereof). As shown in FIG. 22, when the swing arm 72 is in the standby position, the tip of the swing arm 72 is directed upward.

In the second embodiment, when the elevating frame 20 (that is, the mounting bracket 74) rises, the swinging arm 72 comes into contact with the first arm engaging portion 61 as shown in FIG. 22, and the swinging arm 72 moves downward. It is swayed towards. Then, as the elevation of the elevating frame 20 progresses, the biasing force of the spring 73 in the damper 71 acts as a force that presses the second arm engaging portion 62 downward via the swing arm 72. The reaction force acts as a force to raise the elevating pedestal 20), and the elevating pedestal 20 is slowly brought to the predetermined high position shown in FIG. 21 while receiving the damping action of the damper 71. In this manner, like the silent mechanism S, the silent mechanism S2 is also configured such that the elevating frame 20 is raised to a predetermined high position by the spring 73 while being subjected to a buffering effect by the damper 71.

Although the embodiments have been described above, the present invention is not limited to the embodiments, and can be modified as appropriate within the scope of the claims. The damper 71 may generate a damping force during expansion. In this case, the position of the mounting shaft 75, which serves as a pivot point for the cylinder 71a, may be set to the right of the mounting shaft 76, which serves as a pivot point for the swing arm 72, in FIG. 14, for example.

The damper 71 is not limited to a reciprocating type, but may also be a rotary type that rotates in accordance with the swinging of the swinging arm 72. The spring 73 as a biasing means may be disposed outside the damper 71 without being incorporated into the damper 71. As the damper 71, one that generates a damping force both during contraction and expansion may be used. In this case, when the locking mechanism R is unlocked and the elevating frame 20 descends from a predetermined high position, the damping action of the damper 71 can suppress the rapid descent.

In addition to using the weight 13, the lifting movement of the elevating frame 20 may be performed by manual operation using a booster mechanism, by an actuator operated by accumulated fluid pressure (air pressure or hydraulic pressure), or by an electric actuator. An appropriate method can be adopted, such as by performing the method, or a combination of two or more of these methods can be used as appropriate. Of course, the object of the invention is not limited to what is expressly stated, but is also implicitly included to provide any expressed substantial preference or advantage.

INDUSTRIAL APPLICATION This invention is suitable as an elevating type evacuation device equipped in a building.

M: Building H: Evacuation device S: Silent mechanism S2: Silent mechanism (Figures 20 to 22)
R: Lock mechanism 1: Upper balcony (high position)
2: Lower balcony (low position)
10: Guide post 13: Weight 14: Wire 20: Elevating frame 21: Bracket 30: Frame member (fixed member located at a high position)
50: Locking member 51: Engaging member 52: Spring 53: Release lever 61: First arm engaging portion 62: Second arm engaging portion 63: Storage space 71: Damper 71a: Cylinder 71b: Piston 71c: Piston rod 72: Swing arm 73: Spring 74: Mounting bracket 74a: Stopper part 75: Mounting shaft (for damper)
76: Mounting shaft (for swing arm)
77: Connection shaft 79: Roller

Claims (7)

an elevating frame that is moved up and down between a predetermined high position serving as an evacuation area of a building and a low position below the high position, and on which an evacuee is placed;
A swinging arm provided on one of the fixed member at the high position and the elevating frame, a damper connected to the swinging arm, and a biasing force that applies a biasing force in a predetermined direction to the swinging arm. force means and
a first arm engaging portion provided on the other of the fixing member and the elevating frame; and a second arm engaging portion vertically spaced apart from the first arm engaging portion;
Equipped with
The swinging position of the swinging arm is set so that the swinging direction of the swinging arm is changed by the urging force of the urging means when a predetermined boundary position is reached, and the swinging arm is It is possible to take a standby position in which the rocking is stopped at the boundary position or a position swung to one side thereof, and in the process until the elevating frame is raised to the high position, The first arm engaging portion contacts the swing arm in the standby position and swings the swing arm to the other side, thereby receiving a buffering effect from the damper and moving the swing arm toward the boundary. After the elevating pedestal is swung to the other side from the position, the energizing force of the energizing means acts as a force to raise the elevating pedestal from the swinging arm via the second arm engaging portion. is considered to be the high position,
As the elevating frame is lowered from the high position, the second arm engaging portion contacts the swinging arm and swings the swinging arm toward the standby position; contact with the swinging arm is released;
An elevating evacuation device characterized by: The damper, the swing arm, and the biasing means are each provided on the fixed member,
The first arm engaging portion and the second arm engaging portion are each provided on the elevating frame,
the first arm engaging part is located below the second arm engaging part,
The tip of the swinging arm in the standby position is directed downward;
The elevating evacuation device according to claim 1, characterized in that: The damper, the swing arm, and the biasing means are each provided on the elevating frame,
The first arm engaging portion and the second arm engaging portion are each provided on the fixing member,
the first arm engaging part is located above the second arm engaging part,
The tip of the swinging arm in the standby position is directed upward;
The elevating evacuation device according to claim 1, characterized in that: A rotatable roller is held at the tip of the swing arm,
the first arm engaging portion and the second arm engaging portion are brought into contact with the swinging arm via the roller;
The elevating evacuation device according to any one of claims 1 to 3, characterized in that: A surface of the first arm engaging portion that comes into contact with the swinging arm is an inclined surface that is inclined toward the second arm engaging portion toward the tip. The elevating evacuation device according to any one of claims 1 to 4. a base end of the swing arm is rotatably held by a mounting bracket;
The damper is of a reciprocating type, and one end thereof is rotatably attached to the mounting bracket, and the other end is rotatably connected to the swing arm.
The elevating evacuation device according to any one of claims 1 to 5, characterized in that: comprising a locking mechanism for locking the elevating frame at the high position,
The locking mechanism includes a locking member fixedly installed at the high position, and an engagement member provided on the elevating frame and engaged with the locking member at the high position,
Immediately after the swing arm abuts the first arm engagement portion in the process of the elevating frame rising toward the high position, the engagement member engages with the locking member. the engaging member is engaged with the locking member after the swing arm abuts the second arm engaging portion;
The evacuation device according to any one of claims 1 to 6, characterized in that:

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