JP2016078657A - Movable fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lifting type platform fence of which a drive mechanism is simplified while improving visibility.SOLUTION: When a motor 55 of a strut stationery part 50 is driven, a chain 62 is rotated via a chain sprocket 61. As the result, a strut lifting part 20 is elevated via a lifting shaft 31 with respect to the strut stationery part 50. In the strut lifting part 20, a wire 35 is wound around an upper part wire pulley 33 and a lower part wire pulley 34. A first wire stationery part 36 of the wire 35 is fixed to the strut stationery part 50. As the result, the wire 35 is rotated by elevation of the strut lifting part 20, a block 43 for a third bar is moved upwards in association of rotation of the wire, and further, the block 43 for the third bar pushes up a block 42 for a second bar.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a movable fence, for example, a movable fence installed on a railway platform.

  Railroad platforms are equipped with movable fences (home fences) to improve safety. Conventional home fences cannot cope with the difference in vehicle length or the number of vehicle doors. However, in recent years, various types of elevating platform fences have been proposed as next-generation movable fences that can cope with this problem.

  As an elevating platform fence, for example, there is a technology in which a plurality of wire ropes that automatically move up and down depending on the presence or absence of a vehicle are installed between columns, and the wire rope blocks passengers from entering and exiting depending on the stop position of the vehicle (for example, Patent Document 1). There is also a technique for opening and closing by providing a fixed column and a movable column that slide the column up and down (for example, see Patent Document 2).

Special table 2014-5131002 gazette JP 2014-91410 A

  By the way, in the raising / lowering platform fence disclosed in Patent Document 1, in order to secure an opening in the height direction, the height of the fixed support column requires, for example, 2 m or more. For this reason, there is a problem that the station staff, crew members, etc. have a poor outlook when ensuring safety. In addition, in the technique disclosed in Patent Document 2, the visibility is improved by making the support column two stages of the fixed support column and the movable support column, but the elevating drive mechanism such as a safety bar is complicated and another Technology was sought. In addition, in the case of a movable fence having a structure in which the movable column is raised and lowered from the upper end opening of the fixed column, there is a concern about the intrusion of rainwater and foreign matter, and another technique is required from the viewpoint of the structure and cost for countermeasures.

  This invention is made | formed in view of the above situations, Comprising: It is providing the technique which solves the said subject.

The present invention is a home fence having two struts and a plurality of long members installed on the two struts, the struts covering the fixed struts and the fixed struts and the fixed struts And at least one of the plurality of elongate members includes a movable elongate member constructed so as to elevate between the movable struts. And an elevating drive mechanism that elevates and moves the movable long member in conjunction with the elevating operation of the movable column.
The elevating drive mechanism includes a driving source provided on the fixed column, a first elevating mechanism for moving the movable column up and down with respect to the fixed column by the driving source, and interlocking with the moving up and down of the movable column. And a second elevating mechanism that moves the movable elongate member up and down in conjunction with each other.
The second elevating mechanism includes two upper and lower pulleys provided in the movable support column, and a wire or belt member wound between the two pulleys, and the wire or belt member is fixed to the fixed pulley. You may have a 1st fixing | fixed part fixed to a support | pillar, and a 2nd fixing | fixed part connected with the lowest member among the said movable elongate members.
The first elevating mechanism may have a balance weight connected to the movable column through a chain.
Moreover, the said raising / lowering drive mechanism may be equipped with the brake mechanism for maintaining the stop state of the said movable support | pillar.
Moreover, the said movable support | pillar may be equipped with the horizontal direction object detection sensor which detects the object between the said movable support | pillars which oppose.
Further, a vertical direction object detection sensor that detects an object in a lower direction of the movable support column when the movable support column is lowered may be provided.
The present invention is a home fence having two struts and a long member erected on the two struts, the struts covering the fixed struts and the fixed struts covering the upper surface portion. And a movable column that moves up and down with respect to the column.

  ADVANTAGE OF THE INVENTION According to this invention, the raising / lowering type home fence which simplified the drive mechanism, improving visibility can be provided.

It is a perspective view which shows the external appearance of the home fence system based on 1st Embodiment. It is a perspective view of a home fence concerning a 1st embodiment. It is a figure which pays attention to the support | pillar part of the right side of a home fence based on 1st Embodiment. It is a figure paying attention to the structure of the support | pillar fixing | fixed part of the support | pillar part based on 1st Embodiment. It is a figure paying attention to the structure of the support raising / lowering part of the support | pillar part based on 1st Embodiment. It is the perspective view which looked at a part of support | pillar fixing | fixed part and support | pillar raising / lowering part based on 1st Embodiment from the home side. It is the perspective view shown paying attention mainly to the support | pillar fixing | fixed part about the internal structure of the support | pillar fixing | fixed part and support | pillar raising / lowering part based on 1st Embodiment. It is the perspective view shown paying attention to the raising / lowering mechanism of the support | pillar raising / lowering part based on 1st Embodiment. It is the perspective view shown paying attention to the raising / lowering mechanism of the support | pillar fixing | fixed part and support | pillar raising / lowering part based on 1st Embodiment. It is a perspective view shown paying attention to the inside of the support | pillar part based on 1st Embodiment. It is a perspective view shown paying attention to the inside of the upper part of a pillar part concerning a 1st embodiment. It is a perspective view shown paying attention to the inside of the support | pillar part based on 1st Embodiment. It is a figure which shows the home fence based on 2nd Embodiment. It is a figure which shows the home fence based on 2nd Embodiment. It is a figure which shows the home fence based on 3rd Embodiment. It is a figure which shows the home fence based on 3rd Embodiment. It is a perspective view which shows the home fence based on 3rd Embodiment. It is a cross-sectional perspective view which shows the 1st-3rd safety wire of the safety fence based on 3rd Embodiment. It is a perspective view which shows the wire tension detection mechanism of the 1st-3rd safety wire based on 3rd Embodiment. It is a cross-sectional perspective view which shows the wire tension detection mechanism of the 1st-3rd safety wire based on 3rd Embodiment.

  Next, modes for carrying out the present invention (hereinafter, simply referred to as “embodiments”) will be specifically described with reference to the drawings.

<First Embodiment>
FIG. 1 is a perspective view showing an external appearance of a home fence system according to the present embodiment. Here, a configuration corresponding to one train is shown, and in this home fence system, three platform fences 10 are arranged side by side on the platform 99.

  One home fence 10 includes two support columns 12 that are separated from each other by a predetermined distance, and a safety bar 14 (a fence body) that is spanned up and down between the two support columns 12. The safety bar 14 includes a first safety bar 14a, a second safety bar 14b, and a third safety bar 14c in order from the top. In the figure, the safety bar 14 is shown in a closed state. In this closed state, the first safety bar 14a, the second safety bar 14b, and the third safety bar 14c are separated by a predetermined interval, and passengers or the like are on the track. It does not fall to the side.

  2 is a perspective view of one home fence 10, FIG. 2 (a) shows a state where the safety bar 14 is closed, and FIG. 2 (b) shows a state where the safety bar 14 is opened.

  The support column 12 of the home fence 10 includes a support lifting / lowering unit 20 and a support fixing unit 50. The column elevating unit 20 is attached so as to cover the column fixing unit 50 installed on the platform 99.

  As shown in FIG. 2A, when the safety bar 14 is closed, the column fixing part 50 cannot be visually recognized in a state where the column lifting unit 20 covers the column fixing unit 50 almost completely. As shown in FIG. 2B, when the safety bar 14 is in an open state, the column elevating unit 20 moves upward with respect to the column fixing unit 50 so that the column fixing unit 50 can be visually recognized.

  At this time, the second safety bar 14b and the third safety bar 14c of the safety bar 14 as well as the column elevating unit 20 are raised so as to approach the first safety bar 14a, and the first safety bar 14a and the second safety bar 14a The bar 14b and the third safety bar 14c are collectively located adjacent to each other. In this way, the safety bar 14 is opened by operating the support lifting / lowering unit 20 and the safety bar 14 (first to third safety bars 14a to 14c) without increasing the height of the support 12 itself. In this case, it becomes easy to secure the area under the safety bar 14, that is, the height through which passengers pass. Further, when the train arrives at the platform, when the train departs, the column elevating part descends so as to cover the column fixing unit, and it becomes easy for station staff, crew members, etc. to confirm the safety of the platform. In addition, since the column elevating unit 20 which is a movable unit covers the upper surface of the column fixing unit 50, there is no gap or opening on the upper surface, and it is possible to substantially prevent raindrops and dust from entering the interior without using a special structure. Can be prevented.

  Next, the structure of the support | pillar part 12 is demonstrated based on FIGS. Here, the structure / mechanism for moving up and down the column lifting unit 20 and the safety bar 14 will be mainly described. FIG. 3 is a view focusing on the right column portion 12 of the home fence 10. 3A is a front view seen from the home side, FIG. 3B is a plan view, and FIG. 3C is a cross-sectional view taken along line A1-A1 in FIG. FIG. 4 is a view showing the column fixing part 50. FIG. 4A is a view corresponding to FIG. 3C and shows a state in which the support column lifting unit 20 is removed. 4B is a plan view, FIG. 4C is a cross-sectional view along B1-B1 in FIG. 4A, and FIG. 4D is a view taken in the direction of arrow B2 in FIG. FIG. 5 is a diagram showing the column elevating unit 20. 5A is a front view seen from the home side, FIG. 5B is a cross-sectional view taken along line C1-C1 of FIG. 5A, FIG. 5C is a cross-sectional view taken along line C2-C2 of FIG. FIG.5 (d) is C3-C3 sectional drawing of Fig.5 (a).

  FIG. 6 is a perspective view of a part of the column fixing part 50 and the column lifting unit 20 as viewed from the home side. FIG. 7 is a perspective view showing the internal structure of the column fixing part 50 and the column lifting / lowering unit 20 mainly focusing on the column fixing unit 50. FIG. 8 is a perspective view focusing on the lifting mechanism of the column lifting unit 20. FIG. 9 is a perspective view focusing on the lifting mechanism of the column fixing part 50 and the column lifting unit 20. FIG. 10 is a perspective view (partially transparent view) focusing on the inside of the column 12. FIG. 11 is a perspective view (partially transparent view) focusing on the inside of the upper portion of the support column 12. FIG. 12 is a perspective view (partially transparent view) showing the internal structure of the support column 12 as viewed from the side opposite to FIG. 11, that is, the track side.

  As shown in FIG. 3, an LED 16 is attached to the top surface of the column elevating unit 20 to notify the operation state of the home fence 10. In addition, a bar-like resident sensor 49 is attached to the column fixing portion 50 by a predetermined bracket. The resident sensor 49 has an object detection function as one set with the resident sensor 49 provided on the opposing support column 12, and remains between the support 12 and the vehicle when the safety bar 14 is closed. Detects passengers and other objects. A window frame 13 and an open / close door 17 for accessing the inside are provided on the outer frame home side of the column elevating unit 20.

  First, a description will be given focusing on the structure of the column fixing portion 50. As shown in FIG. 3C and FIG. 4, a motor 55 that drives the column elevating unit 20 and the safety bar 14 in common is provided inside the column fixing unit 50. In FIG. 3C and FIG. 4A, the motor 55 is attached to the upper right region of the columnar (tubular) fixed frame 51 of the column fixing part 50. Further, as shown in FIG. 3C, FIG. 4, and FIG. 12, a lock solenoid 59 is attached under the motor 55. More specifically, the lock solenoid 59 is provided in the upper track side region (see region X1 in FIG. 12) of the surface of the fixed frame 51 that faces the side surface 22 of the frame. The lock solenoid 59 is provided with a plunger 59a having a columnar shape and a tip surface formed obliquely (tapered). The lock solenoid 59 is a type in which the plunger 59a is in a push state when not energized. The front end (plunger 59a) of the lock solenoid 59 and the engaging portion 29a of the rising end fixing bracket 29 attached to the column lifting / lowering unit 20 are processed obliquely so that the column lifting / lowering unit 20 is fixed to the rising end even during a power failure. it can. When the column elevating unit 20 is located at the rising end, the lock solenoid 59 is engaged with the rising end fixing bracket 29 attached to the column elevating unit 20 to lock the column elevating unit 20 at the position of the rising end.

  A chain sprocket 61 is provided on the inside upper side of the column fixing portion 50. The power of the motor 55 is transmitted to the chain sprocket 61 via the timing pulleys 57a and 57b and the timing belt 58 shown in FIG.

  A chain 62 is wound around the chain sprocket 61. A weight portion 65 is attached to one end portion of the chain 62 (right end portion in FIG. 3C) by a weight joint portion 63. A desired weight (also referred to as “counter weight” or “balance weight”) is attached to the weight portion 65 so that the lifting and lowering operation of the support column lifting portion 20 is smooth. Here, FIG. 3 shows a state in which an adjustment weight is attached, and FIG. 4 shows a state in which there is no adjustment weight. It should be noted that by adjusting the adjustment weight, manual lifting operation can be easily performed even when the lifting mechanism of the column lifting unit 20 is stopped during a power failure or emergency. In other words, even when the column lifting / lowering unit 20 does not operate due to a power failure or the like, it is possible to manually and safely move the safety bar 14 to a desired position.

  The lift shaft 31 is attached to the other end portion of the chain 62 (the left end portion in FIG. 3C) via the shaft joint portion 64 in the vertically upward direction. The position of the shaft joint portion 64 can be determined by the amount of lifting of the column lifting / lowering portion 20, but is close to the platform 99 here. A lower end portion of the elevating shaft 31 is attached to the shaft joint portion 64, and an upper end portion is attached to the shaft attachment portion 32 shown near the top surface in the drawing.

  As shown in FIG. 4B, a shaft communication port 54 through which the shaft attachment portion 32 and the elevating shaft 31 can be inserted is provided on the frame top surface 53 of the fixed frame 51.

  The shaft attachment portion 32 is attached to the frame upper portion 23 of the column elevating portion 20. That is, the driving force of the motor 55 of the column fixing unit 50 is transmitted to the column lifting unit 20 via the chain 62 and the lifting shaft 31.

  As shown in FIGS. 4, 10, and 11, a brake portion 56 is provided on the inner side surface of the frame top surface 53 of the fixed frame 51. The brake part 56 includes a solenoid 56a, a release pin 56b, and a pin fixing part 56c. When the solenoid 56a is in a power-off (non-energized) state, a pin (plunger) projects outward. When a stop command for the column lifting unit 20 or a power failure occurs, the pin of the solenoid 56 a is fitted into the fitting opening 38 a of the brake bracket 38 of the column lifting unit 20 to stop the operation of the column lifting unit 20. . When the column elevating unit 20 is positioned at the lowering end, the solenoid 56a is turned off by the stop command to lock the column elevating unit 20.

  As shown in the figure, the brake bracket 38 is formed with a large number of openings, and is fitted to the fitting opening 38a closest to the pin when stopped. The solenoid 56a is provided with a release pin 56b that operates in conjunction with the pin. That is, when the release pin 56b is pushed, the pin of the solenoid 56a returns to the inside. In addition, a pin fixing portion 56c is provided beside the release pin 56b, and the pin fixing portion 56c locks the release pin 56b that has been pushed in at the time of a power failure or the like so that it does not return.

  In a non-energized state such as during a power failure, crew members, security guards, etc. release the fitting state (brake state) by pushing the release pin 56b, and then release the brake by fixing the release pin 56b with the pin fixing portion 56c. The state can be maintained. In this state, when the safety bar 14c is pushed up to push the column lifting / lowering unit 20 to the rising end, the column lifting / lowering unit 20 is fixed to the rising end by the lock solenoid 59. As described above, since the tip of the plunger 59a of the lock solenoid 59 and the engaging portion 29a of the rising end fixing bracket 29 attached to the column lifting / lowering unit 20 are processed obliquely, the column lifting / lowering unit can be used even during a power failure. 20 can be fixed to the rising end.

  In addition, a vertically long stick-shaped approach detection sensor 48 is provided inside the column elevating unit 20. The length of the approach detection sensor 48 is substantially the same as the height of the support lift 20. The proximity detection sensor 48 realizes a transmission / reception function as a pair with the proximity detection sensor 48 of the support column lifting / lowering unit 20 of the support column 12 arranged opposite to each other in the horizontal direction. That is, one approach detection sensor 48 outputs a sensing light beam, and the other approach detection sensor 48 receives the light. Then, the presence of an object between the proximity detection sensors 48 is detected by blocking the sensing light beam. In other words, the approach detection sensor 48 detects that a passenger or the like is too close to the column elevating unit 20 and the safety bar 14. When the approach detection sensor 48 detects that a passenger or the like has approached too much, a predetermined control device (safety device) notifies an alarm or stops the operation of the home fence 10. Thereby, it is possible to prevent a passenger or the like from touching the platform fence 10 that is operating in particular. Note that an opening or the like is formed in the cover or the like of the column elevating unit 20 so that the proximity detection sensor 48 functions, that is, the column unit 12 itself does not block the output sensing light beam. Moreover, since the proximity detection sensor 48 provided in one support | pillar part 12 is one component, construction and management can be performed simply. Further, since the approach detection sensor 48 is attached to the column lifting / lowering unit 20 and moves up and down in conjunction with the lifting / lowering of the column lifting / lowering unit 20, the state that is most desired to be avoided, that is, the contact with the operating safety bar 14 is simple. Can be realized.

  Next, with reference to FIGS. 3 and 5, the column elevating unit 20 will be described. As shown in FIG. 5B, the frame side surface 22, which is configured integrally with the frame upper portion 23 of the column elevating unit 20, more specifically, the bar side frame side surface 22 a is interlocked with the elevating of the column elevating unit 20. Thus, a mechanism for raising and lowering the safety bar 14 is provided. Further, as shown in a region X2 in FIG. 12, in the column elevating unit 20, a rising end fixing bracket 29 is provided on the lower side surface on the track side of the bar side frame side surface 22a. The rising end fixing bracket 29 is provided with a key-shaped locking portion 29a that protrudes toward the column fixing portion 50. As described above, the upper portion of the locking portion 29a is processed obliquely (tapered). The rising end fixing bracket 29 (locking portion 29a) is locked to the lock solenoid 59 when the column lifting / lowering portion 20 reaches the rising end.

  Specifically, a frame moving rail 27 is installed on the frame side surface 22 so as to move up and down smoothly with respect to the column fixing portion 50. The frame moving rail 27 is provided with a frame moving block 28 attached to the column fixing portion 50 so that the frame moving rail 27 can be moved up and down.

  In addition, two bar rails 41 are provided above and below in parallel with the frame moving rail 27. A second bar block 42 in the center of FIG. 5B and a lower third bar block 43 in FIG. 5B are attached to the bar rail 41, and can be smoothly moved up and down. The second bar block 42 is provided with a regulation stopper 44. When the regulation stopper 44 descends to a predetermined position in the upper and lower center, the second bar block 42 comes into contact with and locks a predetermined locking member. It is impossible to move down. That is, the restriction stopper 44 functions as a means for defining the movement lower limit position. Although not necessary here, it may function as a means for defining the movement upper limit position.

  The second bar block 42 is provided with a bar fixing portion 15 for attaching the second safety bar 14b. Similarly, the third bar block 43 is provided with a bar fixing portion 15 for attaching the third safety bar 14c. Here, since the bar moving opening 24 is provided between the two bar rails 41, the bar fixing portion 15 on the side opposite to the surface to which the bar rail 41 is attached can move up and down. Yes.

  Moreover, the upper wire pulley 33 provided in the upper end vicinity, the lower wire pulley 34 provided in the lower end vicinity, and the wire 35 wound around them are provided. Instead of the wire 35, a belt member (including a chain) may be used.

  The wire 35 is provided with a first wire fixing portion 36 that is fixed to a predetermined position of the fixing frame 51 of the column fixing portion 50. That is, the first wire fixing portion 36 of the wire 35 is fixed to the fixed frame 51.

  The wire 35 is fixed to the third bar block 43. Therefore, the third bar block 43 moves up and down as the wire 35 rotates. When the wire 35 rotates clockwise in the drawing, the third bar block 43 moves upward, and when the wire 35 rotates counterclockwise, the third bar block 43 moves downward.

  When the safety bar 14 of the home fence 10 moves from the closed state to the open state, the third bar block 43 rises in conjunction with the rotation of the wire 35 and pushes up the second bar block 42 halfway.

  A stopper 40 for positioning the second bar block 42 and the third bar block 43 is provided. The stopper 40 includes a stopper bar 40a, a lift bar plate 40b, a lift bar plate 40c, and a buffer rubber 40d.

  The buffer rubber 40d is provided on the upper surface of the third bar block 43 and absorbs an impact when it comes into contact with the second bar block 42. The elevating bar plate 40 b is attached to the second bar block 42. The elevating bar plate 40 c is attached to the third bar block 43.

  The stopper bar 40a connects the two lift bar plates 40b and 40c. Here, the upper end of the stopper bar 40a is fixed to the elevating bar plate 40b of the second bar block 42. The elevating bar plate 40c of the third bar block 43 is formed with an opening that communicates vertically, and a stopper bar 40a is inserted through the opening so as to be movable. Further, the lower end portion of the stopper bar 40a is structured to be locked with respect to the opening so that the stopper bar 40a does not come off from the lift bar plate 40c.

  A pinch detection unit 45 is provided at the lower end portion of the lifting frame cover 21 of the column lifting unit 20. The sandwiching detection unit 45 is provided on each of two surfaces excluding the fixed column side adjacent to the track side.

  The pinching detection unit 45 includes a micro switch 46 and a bar-shaped (or plate-shaped) detection plate 47 attached to the lower side of the micro switch 46. When the detection plate 47 moves in the upward direction, that is, when the detection plate 47 comes into contact with some object in the middle of the lowering of the column elevating unit 20, the microswitch 46 detects it. When detected, the operation of the column elevating unit 20 is controlled to be stopped by a predetermined control device (management device).

  As described above, in the home fence system 1 of the present embodiment, when the safety bar 14 is opened, the column lifting / lowering unit 20 is raised from the column fixing unit 50 and the safety bar 14 (first to third safety bars 14a to 14). 14c) is reduced. As a result, when the safety bar 14 is in the open state, the height of the entire home fence 10, that is, the height of the home fence system 1 can be suppressed while sufficiently ensuring a space through which a person passes.

  In addition, in the case of the closing operation, the column elevating part 20 is stored in a form that covers the column fixing unit 50, and the interval between the safety bars 14 is increased to a predetermined interval so that it cannot pass through, thereby preventing the fall. Can be realized.

  Further, since the column fixing unit 50 is housed in such a manner that the column lifting / lowering unit 20 is covered, the installation area of the column unit 12 can be reduced. As a result, the tolerance for a train with a different overall length, a train with a different number of doors, and a deviation of the train stop position increases. That is, it can flexibly cope with many conditions.

  In addition, the mechanism of the home fence 10 can be simplified by using only the motor 55, that is, only one power source, as the driving force for the lifting and lowering unit 20 and the safety bar 14 to raise and lower the manufacturing cost and maintenance cost. Can be reduced.

<Second Embodiment>
FIG.13 and FIG.14 is a figure which shows the home fence 110 which concerns on 2nd Embodiment. FIG. 13A is a front view, FIG. 13B is a plan view, and FIG. 13C is a cross-sectional view taken along line D1-D1 of FIG. 14A shows a state where the home fence 110 is closed, and FIG. 14B shows a state where the home fence 110 is opened. In this modification, the long member between the support columns 112 is changed from a bar material to a plate shape (safety fence 114).

  As for the home fence 110, the safety fence 114 (1st-4th safety fence 114a-114d) extended over the support | pillar part 112 is formed in plate shape. The 1st safety fence 114a is being fixed to the support | pillar raising / lowering part 120, the inside is a cavity and the bottom face is an opening.

  The second to fourth safety fences 114b to 114d are arranged so as to be gradually shifted rearward. When the column lifting / lowering unit 20 covering the column fixing unit 150 is raised, the second to fourth safety fences 114b to 114d are raised similarly to the above-described embodiment, and as shown in FIG. 114a. In this modification, the fourth safety fence, which is the lowermost movable long member, corresponds to the third safety bar 14c that moves up and down directly by the wire 35 of the above-described embodiment. The lifting / lowering operation is performed directly by the lifting / lowering operation.

  By adopting such a configuration, the same effects as those of the embodiment can be obtained, and the area of the safety fence 114 when closed can be widened, so that the fall or the like can be prevented more effectively.

<Third Embodiment>
15, 16 and 17 are views showing the home fence 210 according to the present embodiment. In the present embodiment, unlike the safety bar 14 of the first embodiment, wires (here, first to third safety wires 214a to 214c) are used as the configuration of the long member of the safety fence 214. In the following, the description will be given mainly focusing on the configuration different from the first embodiment.

  15 shows a state in which the home fence 210 is closed, FIG. 15A is a front view, FIG. 15B is a cross-sectional view taken along line E1-E1 of FIG. 15A, and FIG. It is. 16 shows a state in which the home fence 210 is opened, FIG. 16A shows a front view, and FIG. 16B shows an E2-E2 cross-sectional view of FIG. FIG. 17 is a perspective view of the state in which the home fence 210 is opened, and shows a state in which the mesh member 214d is omitted.

  As shown in the figure, the column portion 212 includes a column elevating unit 220 and a column fixing unit 250. A safety fence 214 is passed between the two support columns 212. The safety fence 214 includes first to third safety wires 214a to 214c, which are long members, and a mesh-like member 214d attached to them.

  The first safety wire 214a is provided on the top, and is fixed and passed to the two support columns 220. In the closed state shown in FIG. 15, the second safety wire 214 b is disposed substantially at the center in the vertical direction, and is passed up and down to the two column elevating parts 220. The third safety wire 214c is disposed at the bottom in the closed state shown in FIG. 15, and is vertically movable to the two column elevating parts 220. The second safety wire 214b and the third safety wire 214c move up and down in the region of the bar moving opening 224 formed in the lifting frame cover 221.

  The mesh member 214d is, for example, a mesh-like member formed of polyvinyl chloride and attached to the first to third safety wires 214a to 214c. In the state where the safety fence 214 of FIG. 15 is closed, the first to third safety wires 214a to 214c are spaced apart, so that the mesh member 214d is stretched on a substantially flat surface. In the state where the safety fence 214 of FIG. 16 is opened, the second safety wire 214b and the third safety wire 214c move to the first safety wire 214a side, so that the mesh-like member 214d becomes the second safety wire 214b and the third safety wire. It is lifted up in a fixed region with 214c to form two bags.

  18 is a cross-sectional perspective view showing the first to third safety wires 214a to 214c, and is an enlarged cross-sectional view of the central region E3 in FIG. The first to third safety wires 214a to 214c have the same configuration, although there are differences in wire diameters, a tensioner 215 is provided near the center, and a wire body 216 is attached to both sides thereof. . Here, the wire main body 216 on the left side of the tensioner 215 in the drawing is screwed to the tensioner 215 with a right screw portion 216a. Similarly, the wire body 216 on the right side of the tensioner 215 in the drawing is fixed to the tensioner 215 with a left screw portion 216b. Therefore, the tension of the first to third safety wires 214a to 214c can be adjusted by rotating the tensioner 215 in a desired direction.

  FIG. 19 is a perspective view showing a wire tension detection mechanism of the first to third safety wires 214a to 214c. FIG. 20 is a cross-sectional perspective view showing the wire tension detection mechanism of the first to third safety wires 214a to 214c.

  The wire tension detection mechanism is provided in the same configuration for each of the first to third safety wires 214a to 214c, and includes a wire fixing portion 218, a spring 219, and a micro switch 231.

  The wire fixing portion 218 of the first safety wire 214a is provided on the bar-side frame side surface 22a. The wire fixing portion 218 of the second safety wire 214b is provided in the second wire guide 242. The wire fixing portion 218 of the third safety wire 214c is provided in the third wire guide 243.

  The wire fixing portion 218 is formed in a substantially cylindrical shape, and a spherical fixing ball portion 217 that is an end portion of the wire main body 216 is attached to the outer opening. A spring 219 is housed in a compressed state on the inner wall of the wire fixing portion 218 in the inner direction. When the first to third safety wires 214a to 214c are loosened or disconnected, the outer end part of the wire fixing portion 218 moves or drops outward, and the first micro switch 231 detects the state. it can.

  As described above, the first to third safety wires 214a to 214c used for the safety fence 214 are lighter than the safety bar 14 (first to third safety bars 14a to 14c) of the first embodiment. The balance weight can also be made lighter and smaller. That is, the overall weight of the home fence 10 is reduced, the column fixing part 50 is also thinned, and the column installation area can be reduced.

  The present invention has been described based on the embodiments. This embodiment is an exemplification, and it will be understood by those skilled in the art that various modifications can be made to combinations of these components, and such modifications are also within the scope of the present invention.

10, 110, 210 Home fence 12, 112, 212 Prop section 14 Safety bar 14a First safety bar 14b Second safety bar (movable long member)
14c 3rd safety bar (movable long member)
15 Bar fixing part 20, 120, 220 Column elevating part 21, 221 Elevating frame cover 22 Frame side 22 a Bar side frame side 23 Frame upper part 24, 224 Bar moving opening 27 Frame moving rail 28 Frame moving block 29 Rising end fixed Metal fitting 29a Locking portion 31 Lift shaft 32 Shaft mounting portion 33 Upper wire pulley 34 Lower wire pulley 35 Wire 36 First wire fixing portion 37 Second wire fixing portion 38 Brake frame 38a Fitting opening 39 Brake solenoid 40 Stopper 40a Stopper Bar 40b Elevating bar plate 40c Elevating bar plate 40d Buffer rubber 41 Bar rail 42 Second bar block 43 Third bar block 44 Restriction stopper 45 Pinch detector 46 Micro switch 47 Knowledge plate 48 Approach detection sensor 49 Residual sensor 50, 150, 250 Post fixing part 51 Fixing frame 53 Frame top surface 54 Shaft communication port 55 Motor 56 Brake part 56a Solenoid 56b Release pin 56c Pin fixing part 57a, 57b Timing pulley 58 Timing belt 59 Lock solenoid 59a Plunger 61 Chain sprocket 62 Chain 63 Weight joint part 64 Shaft joint part 65 Weight part 66 Weight block 67 Weight rail 114, 214 Safety fence 114a First safety fence 114b Second safety fence (movable long member) )
114c 3rd safety fence (movable long member)
114d 4th safety fence (movable long member)
214a 1st safety wire 214b 2nd safety wire (movable long member)
214c 3rd safety wire (movable long member)
214d Mesh member 215 Tensioner 216 Wire body 216a Right screw part 216b Left screw part 217 Fixing ball part 218 Wire fixing part 219 Spring 231 Micro switch

Claims (8)

A home fence having two struts and a plurality of long members erected on the two struts,
The strut portion is
A fixed support and a movable support that covers the fixed support and moves up and down relative to the fixed support;
At least one elongate member of the plurality of elongate members includes a movable elongate member constructed so as to move up and down between the movable support columns,
An elevating drive mechanism for elevating the movable support and driving the movable elongate member to move up and down in conjunction with the elevating operation of the movable support;
The movable fence characterized by having. The lifting drive mechanism is
A drive source provided on the fixed column;
A first elevating mechanism for elevating the movable column with respect to the fixed column by the drive source;
The movable fence according to claim 1, further comprising: a second lifting mechanism that moves the movable long member up and down in conjunction with raising and lowering of the movable support column. The second lifting mechanism includes two upper and lower pulleys provided in the movable support column,
A wire or belt member wound between the two pulleys,
The wire or belt member is
A first fixing part fixedly attached to the fixed support;
The movable fence according to claim 2, further comprising: a second fixed portion connected to a lowermost member of the movable long members.   4. The movable fence according to claim 2, wherein the first elevating mechanism has a balance weight connected to the movable column via a chain.   The movable fence according to claim 4, wherein the elevating drive mechanism includes a brake mechanism for maintaining a stop state of the movable column.   The movable fence according to any one of claims 1 to 5, wherein the movable support column includes a horizontal object detection sensor that detects an object between the opposed movable support columns.   The movable fence according to any one of claims 1 to 6, further comprising a vertical direction object detection sensor that detects an object in a lower direction of the movable support column when the movable support column is lowered. A home fence having two struts and a long member erected on the two struts,
The strut portion is
A movable fence comprising a fixed column and a movable column that covers the fixed column and covers the upper surface part and moves up and down with respect to the fixed column.

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