JP2016120745A - Platform fence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevation type platform fence that is opened and closed by moving up and down barrier parts and that has a simple structure, prevents a hand of a person or his or her hand baggage from being caught between the barrier parts to be low-cost and superior in safety, and can suppress a height of a column part.SOLUTION: A right column part 17 is an extension/contraction type comprising an interpolation part 176 capable of freely moving up and down in a base part 172. In the space in the interpolation part 176, a belt 21 which is wound/unwound while having one end side fixed to a driving pulley 23 is extended as an elevation mechanism part 20 via an upper right pulley 24, an upper left pulley 25, and a lower pulley 26, and has its end fixed by a fixed support part 27. A first barrier rod 11 is connected and fixed to an upper end part of the interpolation part 176, and a second barrier rod 12 is fixed by a connector 30 to a region, moving in the same direction when the interpolation part 176 is elevated, of the belt 21.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a platform fence installed on a station platform such as a railway.

  2. Description of the Related Art There is known a home fence that is installed at a track side end of a station platform such as a railroad and that is opened and closed in accordance with the timing of getting on and off the vehicle. There are several types of home fences depending on how they are opened and closed. For example, Patent Literature 1 and Patent Literature 2 disclose an elevating type home fence that opens and closes a blocking bar (blocking bar) that prevents entry.

JP 2014-34309 A International Publication No. 2011/024612

  In the configuration of the lifting device disclosed in FIG. 7 of Patent Document 1, a lifting mechanism having a pulley, a belt, and an electric motor must be prepared for each blocking bar, which tends to increase the manufacturing cost. In order to increase the number of blocking rods (for example, three), an elevating mechanism is further required, which increases the size, weight, and cost of the apparatus. Further, in the configuration of the lifting device disclosed in FIGS. 5, 6 and 9, 10 of Patent Document 2, the lifting mechanism is further complicated, and in this case also, the manufacturing cost is likely to be high, and the control is complicated. To do.

  Moreover, in the structure of the raising / lowering apparatus disclosed by FIG. 8 of patent document 1, the raising / lowering mechanism about a lower side interruption | blocking bar is left, and the structure which scoops up an upper side interruption | blocking bar with a lower side interruption | blocking bar | bowl is disclosed. Although the manufacturing cost is improved as compared with the configuration of FIG. 7, since the two blocking bars come into contact with each other at a relatively low position, the passenger's hand and luggage are unexpectedly placed on the two blocking bars. There is a risk of being caught between the two.

  Moreover, in the structure disclosed in Patent Document 1, it is necessary to raise the blocking bar higher than the opening of the train door. However, when the support pillars of the platform fence are raised, the prospect of the doorway in the front-rear direction of the train becomes worse for the conductor and station staff, and it becomes difficult to see the situation of the door closing.

  The present invention has been devised in view of the above-described problems, and a first object of the invention is to realize a simple structure in an elevating-type home fence that opens and closes by opening and closing a blocking portion. In addition, it is a low-cost, high-safety platform that does not allow people's hands and luggage to be caught between the barriers, and that can control the height of the column in the fully closed state (a state where passengers are not allowed to pass). The second purpose is to provide a fence.

1st invention for solving the said subject is a raising / lowering type home fence which opens and closes the interruption | blocking part passed between the support | pillar parts,
The strut portion is configured to include a base portion and an insertion portion that is supported slidably up and down on the inside of the base portion and has a pulley on the top and bottom.
An elevating mechanism for raising and lowering the insertion portion, a cord-like body (for example, the belt 21 in FIG. 2) hung on the upper and lower pulleys of the insertion portion, and the insertion portion A fixed support portion that is positioned at a predetermined height between the upper and lower pulleys and that fixes and supports one end side of the cord-like body independently of the insertion portion, and pulls or sends out the other end side of the cord-like body A drive pulley for, and
As the blocking section, a first blocking section fixed to the insertion section and a second blocking section that is connected to a portion between the upper and lower pulleys of the cord-like body and moves up and down with the vertical movement of the portion. And comprising
The first blocking part moves up and down at the same speed as the lifting speed of the insertion part, and the second blocking part lower than the first blocking part moves up and down at a speed faster than the first blocking part, The first barrier and the second barrier are platform fences that move up and down in conjunction with each other.

  In a second aspect of the invention, the drive pulley is provided at a height position lower than a fixed support position of the cord-like body by the fixed support portion, and the cord-like body includes the fixed support portion and the upper and lower pulleys. The lower pulley (for example, the lower pulley 26 in FIG. 2), the upper pulley (for example, the upper left pulley 25 and the upper right pulley 24 in FIG. 2), and the drive pulley are folded back and forth in this order. It is the home fence of 1st invention hung.

  3rd invention is a 1st or 2nd invention home fence in which the said fixed support part is provided in the predetermined position of the internal space of the said insertion part.

  A fourth invention is the home fence according to any one of the first to third inventions, in which the end side of the cord-like body is fixed after being hooked on a moving pulley that suspends a weight after passing through the driving pulley. is there.

  According to a fifth aspect of the present invention, in one of the left and right support columns to which the first blocking portion and the second blocking portion are passed, the base portion, the insertion portion, the lifting mechanism portion, the cord-like body, A fixed support portion and the driving pulley are provided, and the other support portion is supported so as to be slidable up and down inside the base portion on the other side and the base portion on the other side, and the first blocking portion is fixed and Any one of the first to fourth, provided with the other insertion portion that supports the second blocking portion slidably up and down, and the other lifting mechanism portion that raises and lowers the other insertion portion. This is the home fence of the invention.

According to the first to fifth inventions, the first blocking portion and the second blocking portion can be moved up and down in conjunction with each other while the column portion can be expanded and contracted.
Further, for example, in the configuration disclosed in FIG. 8 of Patent Document 1, the lower blocking portion pushes the upper blocking portion, and thus there is a possibility that a passenger's hand or baggage may be pinched. However, in the 1st-5th invention, all the interruption | blocking parts start ascending all together, and the space | interval of each interruption | blocking part becomes narrow gradually during the rise. Passengers will be aware of the movement once the blocking sections begin to move all at once. At that time, you can take evasive action if you are in a position where your hand or belongings are likely to be pinched. Even if the evasive action cannot be performed immediately, the interval between the blocking sections gradually increases and narrows, so the passenger's hand and luggage located between the blocking sections will naturally move away from the blocking section. . Therefore, the risk of the passenger's hand or luggage being caught is extremely low.

In addition, since the lifting mechanism is realized with a pulley structure of various pulleys and cords, it is possible to simplify the structure of the lifting platform fence that opens and closes by opening and closing the blocking part, reducing costs. can do. Along with this, an effect of reducing incidental work accompanying installation (for example, incidental work for improving the load resistance of the station platform) can be obtained.
In addition, since the support column is telescopic, the support column in the fully closed state can be lowered to improve the visibility of the train and the station staff in the longitudinal direction of the train.

  Further, by configuring as in the fourth aspect of the invention, it is possible to reduce the size of the drive pulley and simplify the surrounding structure, compared to the configuration in which the cord-like body is wound around the drive pulley. In addition, the power load can be reduced. Therefore, effects such as cost reduction, weight reduction, and simplification of work at the time of inspection can be obtained.

  Furthermore, by simplifying the support structure on either the left or right side of the first blocking portion and the second blocking portion as in the fifth aspect of the invention, further cost reduction and weight reduction can be realized.

It is a front view which shows the external appearance example which looked at the raising / lowering platform fence of 1st Embodiment from the platform side, (1) Fully closed state, (2) The figure which shows a fully open state. It is a figure which shows the structural example of the right support | pillar part of the raising / lowering platform fence of 1st Embodiment, Comprising: (1) Top view internal structure figure in AA cross section in a fully-closed state, (2) Station in BB cross section The front view internal structure figure seen from the home side. The right view internal structure figure which shows the structural example of the right support | pillar of the raising / lowering platform fence of 1st Embodiment. It is a figure which shows the structural example of the right support | pillar of the raising / lowering platform fence of 1st Embodiment, Comprising: The front view internal structure figure in the middle process of a fully closed state and a fully open state. It is a figure which shows the structural example of the right support | pillar of the raising / lowering platform fence of 1st Embodiment, Comprising: The front view internal structure figure in a full open state. It is a figure which shows the structural example of the right support | pillar of the raising / lowering platform fence of 1st Embodiment, Comprising: The right view internal structure figure in a fully open state. The front view internal structure figure in the fully closed state which shows the structural example of the right support | pillar of the raising / lowering platform fence of 2nd Embodiment. It is a figure which shows the structural example of the left support | pillar in the modification based on the raising / lowering platform fence of 1st Embodiment, Comprising: The front view internal structure figure in a fully-closed state.

[First Embodiment]
FIG. 1 is a front view showing an example of an external appearance of the elevating platform fence according to the present embodiment as viewed from the station platform side. FIG. 1 (1) shows a fully closed state, and FIG. 1 (2) shows a fully opened state.

  The elevating platform fence 10 of this embodiment is a gate device that permits / blocks entry / exit to / from a vehicle that has entered a station platform by raising and lowering a blocking portion (blocking material) to fully open / close the opening. .

  The elevating platform fence 10 employs a first blocking bar 11 and a second blocking bar 12 as blocking sections. The first blocking bar 11 to the second blocking bar 12 are passed between a pair of the right column part 17 and the left column part 18 erected at a predetermined interval along the side edge of the station platform 2, It is moved up and down in conjunction with an elevating mechanism unit built in the right column 17. The blocking portion is not limited to a bar (bar), and may be configured to employ a wire, rope, net, sheet, chain, board, or the like. Moreover, the length (in other words, the space | interval of a right-and-left support | pillar part) along the home longitudinal direction of a interruption | blocking part can be defined arbitrarily. For example, it may be the length of one vehicle or a length corresponding to one door opening of the vehicle.

  FIG. 2 is a diagram illustrating a configuration example of the right column portion 17 of the elevating platform fence according to the first embodiment, in a fully closed state (a state where a passenger is prohibited from passing the elevating platform fence 10). 2) A top view internal structure diagram in the AA section, and (2) A front view internal structure diagram viewed from the station platform side in the BB section. FIG. 3 is an internal structural view of the same right side view.

The right strut portion 17 has a vertically extending structure. Specifically, a main linear motion mechanism 174 that is slidable in the vertical direction is provided on the inner wall surface of a box-shaped base 172 having an open upper end.
The main linear motion mechanism 174 can be realized by a known linear motion mechanism (for example, a guide rail and a slider). A box-shaped insertion portion 176 having an open lower end is fixed to the main linear motion mechanism portion 174. In other words, the right column portion 17 can be expanded and contracted by the insertion portion 176 moving up and down along the inner wall of the base portion 172. By the way, in the fully closed state of the liftable platform fence 10, all or most of the insertion part 176 is accommodated in the internal space of the base part 172.

The lifting mechanism 20 for moving the insertion part 176 up and down is housed inside the insertion part 176. The elevating mechanism unit 20 of the present embodiment is an elevating mechanism that employs a belt 21 and various pulleys.
Specifically, the elevating mechanism 20 is
1) belt 21;
2) a drive unit 22 installed at the bottom of the right column 17;
3) a drive pulley 23 driven by the drive unit 22;
4) an upper right pulley 24 and an upper left pulley 25 provided on the upper inner wall of the insertion portion 176;
5) a lower pulley 26 provided on the lower inner wall of the insertion portion 176;
6) Fixed support that is fixed to the drive unit 22 (or the right column 17) and fixes the other end of the belt 21 to a height between the upper right pulley 24, the upper left pulley 25, and the lower pulley 26. Part 27.

  For example, a belt can be used as the belt 21, but other cords such as a chain, a cable, and a rope may be used.

  The drive unit 22 includes an electric motor that is driven and controlled by the control board 50, a reduction gear, a brake mechanism, an emergency battery, and the like (not shown).

  The drive pulley 23 is connected to a horizontal or substantially horizontal rotation shaft of the drive unit 22, and one end side of the belt 21 is fixed to the rotation shaft. That is, the drive pulley 23 is a pulley that pulls or feeds the belt 21 and also serves as a pulley for winding the belt 21. For example, the belt 21 can be pulled up and wound up by rotating it clockwise in FIG. 2 (2), and the wound belt 21 can be rewound (drawn out) by turning it counterclockwise.

  The belt 21 rises upward from the drive pulley 23, is hung from the right of the upper right pulley 24, and is passed to the upper left pulley 25. Then, it is lowered from the left of the upper left pulley 25 and hung to the left of the lower pulley 26, and rises again from the right to be fixed to the fixed support portion 27. In the present embodiment, since the left and right positions of the fixed support portion 27 are set between the upper right pulley 24 and the upper left pulley 25, the belt 21 may be arranged in a spiral shape when viewed from the front. appear.

  Now, a slit-like insertion port 178 is opened up and down on the left side surface of the base portion 172, and the right ends of the first blocking rod 11 and the second blocking rod 12 are accommodated in the base portion 172 through the insertion port 178. The

  The right end of the first blocking bar 11 is connected and fixed to the upper left end of the insertion part 176. Accordingly, the first blocking bar 11 moves up and down together with the insertion part 176.

  The right end of the second blocking bar 12 is accommodated in the insertion portion 176 through an insertion hole 179 having a slit shape formed on the left side surface of the insertion portion 176. Then, it is supported by the sub linear motion mechanism 175 that can slide up and down along the inner wall of the insertion portion 176 so as to be movable up and down, and is connected and fixed to the belt 21 by the connector 30. Specifically, a portion of the belt 21 extending from the upper left pulley 25 to the lower pulley 26 (first straight portion from the left in FIG. 2) is fixed at a position lower than the first blocking bar 11. Accordingly, the second blocking bar 12 moves up and down as the connecting tool 30 moves up and down.

  In addition, since the left support | pillar part 18 has a right-and-left symmetrical structure with the right support | pillar part 17, description is abbreviate | omitted. However, if the control unit 50 of the right column 17 also controls the drive unit 22 of the left column 18 at the same time, the control substrate 50 of the left column 18 may be omitted.

Next, operation | movement of the raising / lowering type home fence 10 of this embodiment is demonstrated.
When the vehicle does not enter the station platform 2, the elevating platform fence 10 is in the fully closed state shown in FIGS. The first blocking bar 11 to the second blocking bar 12 are at low positions, respectively, and prevent passengers on the station platform 2 from entering the track side. The drive pulley 23 is prevented from moving by a brake built in the drive unit 22. Therefore, even if a passenger tries to lift the first blocking bar 11 to the second blocking bar 12 upward, the passenger does not move.

  When a vehicle enters the station platform 2, a signal instructing to open the home fence is transmitted (input) from the outside to the control board 50 of the liftable platform fence 10 as the door of the vehicle is opened. When receiving the signal, the control board 50 releases the brake of the drive unit 22 and controls the operation of the drive unit 22 so that the drive pulley 23 rotates in the forward direction (clockwise in FIG. 2B).

  FIG. 4 is a front view of the internal structure of the right column portion 17 in the course from the fully closed state to the fully open state. When the drive pulley 23 is rotated forward, the belt 21 is wound around the drive pulley 23, and a portion of the belt 21 between "upper left pulley 25 to lower pulley 26 to fixed support portion 27" is shortened. As a result, the lower pulley 26 and the first blocking bar 11 connected to the lower pulley 26 via the insertion portion 176 move upward. And the 2nd interruption | blocking stick | rod 12 fixed to the belt 21 between the lower pulley 26 and the upper left pulley 25 also moves interlockingly upwards.

  Here, paying attention to the movement amounts L1 and L2 of the first blocking bar 11 and the second blocking bar 12 (which may be read as speed), the moving amount L2 of the second blocking bar 12 is equal to the winding amount of the belt 21. Be the same. On the other hand, if the lower pulley 26 is regarded as a moving pulley, the movement amount L1 of the first blocking bar 11 is half of the winding amount of the belt 21 according to the principle of the moving pulley. That is, the first blocking bar 11 and the second blocking bar 12 are interlocked with a speed ratio of “0.5: 1”.

FIG. 5 is a front view internal structure diagram of the right support column 17 viewed from the station platform side in the fully opened state. FIG. 6 is an internal structural diagram of the same right side view.
When fully opened, the first blocking bar 11 and the second blocking bar 12 reach the highest position and are closest to each other. The position of the fully opened state of the first blocking bar 11 and the second blocking bar 12 is higher than the door opening of the train, and the passenger can move under the first blocking bar 11 and the second blocking bar 12 without lowering their heads. Can pass through. In the fully open state, the control board 50 stops the drive unit 22 and activates the brake.
Note that the detection of the fully open state may be performed by detecting the positions of the first blocking bar 11 and the second blocking bar 12 (for example, reaching the fully opened / fully closed position), detecting the position of the lower pulley 26, This can be realized by detecting the rotation angle of the drive pulley 23, and a sensor corresponding to the detection method may be appropriately arranged.

  When returning from the fully open state to the fully closed state, the control board 50 may operate the drive unit 22 to rotate the drive pulley 23 in the reverse direction (counterclockwise in FIG. 5).

  Focusing on the process from the fully closed state to the fully open state, that is, the process in which the two blocking bars rise, the blocking bars start to rise all at once. Therefore, the passenger can notice the operation. At that time, if your hand or belongings are likely to be pinched, you will be able to take avoidance action. Even if the evasive action cannot be performed immediately, the interval between the blocking bars gradually increases and narrows, so the passenger's hand and baggage located between the blocking bars are gradually lifted together with the blocking bars and eventually become natural. And will leave the bar. In the first place, the position where the adjacent blocking bars are close enough to sandwich the hand or baggage is the position where the blocking bar is sufficiently high, and the passenger's hand or baggage is not easily pinched. Therefore, the risk of the passenger's hand and belongings being caught is extremely low.

  When attention is paid to the heights of the right support column 17 and the left support column 18, the fully closed state is lower than the fully open state. The height of each column portion in the fully opened state is inevitably increased to lift the first blocking rod 11 and the second blocking rod 12, but when returning to the fully closed state, it becomes lower than the fully opened state, It becomes easier for the conductor and station staff to see the state near the train door, and the train's front-rear direction is improved.

  As described above, according to the present embodiment, the plurality of blocking bars can be lifted and lowered with a simple configuration using one drive unit 22. And when raising a blocking bar, the danger that a passenger's hand, luggage, etc. waiting for boarding will be pinched can be reduced significantly. Moreover, since the raising / lowering mechanism part 20 is a structure using a belt and a pulley, and only one motor for rotating the drive pulley 23 is required for the motor, the weight can be reduced and a simple control structure can be achieved. Moreover, it becomes possible to reduce incidental construction (for example, reinforcement construction of a station platform) accompanying installation by reducing the total weight of the liftable platform fence 10.

[Second Embodiment]
Next, a second embodiment to which the present invention is applied will be described. In addition, the same code | symbol is provided about the component similar to 1st Embodiment. In the following, redundant description will be omitted, and differences from the first embodiment will be mainly described.

FIG. 7 is a diagram illustrating a configuration example of the right column portion 17B of the liftable platform fence according to the second embodiment, and is a front view internal structure diagram viewed from the station platform side in the fully closed state.
In the elevating platform fence 10 </ b> B of the present embodiment, the length of the belt 21 is not adjusted by winding / rewinding by the driving pulley 23, but is adjusted by raising / lowering the balance weight 40.

  Specifically, in the elevating mechanism 20B of the present embodiment, the end side of the belt 21 goes from the drive pulley 23 through the first fixed pulley 41 to the upper side in the support column and in the base 172 on the right side of the upper right pulley 24. It is hung from the left on the 2nd fixed pulley 42 provided in the upper part. Then, the moving pulley 43 is hung from the right of the second fixed pulley 42, is suspended upward again, and is fixed by the belt fixing tool 44 provided at the uppermost right in the column. A balance weight 40 is suspended from the moving pulley 43.

  In the first embodiment, the drive pulley 23 winds up the belt 21 in order to raise the first blocking bar 11 and the second blocking bar 12. However, in this embodiment, in order to raise the first blocking bar 11 to the second blocking bar 12, the drive pulley 23 is driven to rotate forward (counterclockwise in FIG. 7) and the belt 21 is simply pulled down (drawn). is there. The belt 21 that has been pulled down by the drive pulley 23 is absorbed by the balance weight 40 being lowered and the length of the portion from the second fixed pulley 42 to the belt fixture 44 being increased.

  Also in this embodiment, the same effect as that of the first embodiment can be obtained. In addition, the drive pulley can be made smaller and the surrounding structure can be simplified than the configuration in which the cord-like body is wound around the drive pulley. Moreover, reduction of the power load can be realized. Therefore, effects such as cost reduction, weight reduction, and simplification of work at the time of inspection can be obtained.

[Modification]
As described above, the embodiment to which the present invention is applied has been described. However, the embodiment of the present invention is not limited to the above example, and components can be added, changed, or omitted as appropriate.

  For example, in the above embodiment, the elevating mechanism 20 is built in the right column 17, but the internal configuration of the right column 17 and the left column 18 may be reversed left and right.

  In addition, a tension roller, a belt guide, and the like can be added to the lifting mechanism unit 20 as appropriate.

  In addition, an additional blocking part may be provided as appropriate between the first blocking bar 11 and the second blocking bar 12. For example, a cloth-like body or a net-like body may be bridged between two blocking bars. In the fully closed state, the cloth or net spreads up and down between the upper and lower blocking bars, and a sign (printing, cutout characters, etc.) appears as “Dangerous. Since the interval between the shield bars is shortened, it is preferable that the cloth-like body or the net-like body is folded so that the sign cannot be seen. Furthermore, it is known that at least one of the first blocking bar 11 and the second blocking bar 12 automatically winds the cloth-like body or net-like body using the biasing force of the spring in the process of reaching the fully closed state. It is preferable to provide a winding mechanism.

For example, in the above-described embodiment, the lifting mechanism 20 is provided in each of the left and right support columns, but a configuration in which any of them is omitted is also possible.
More specifically, FIG. 8 is a diagram illustrating a configuration example of the left column 18 of the elevating platform fence 10 according to the first embodiment, and is a front view internal structure diagram viewed from the station platform side in the fully closed state. It is. The internal structure of the left column part 18 is basically symmetrical with respect to the right column part 17 except that the lifting mechanism unit 20 is not incorporated. That is, the left strut 18 has a vertically extending structure. Specifically, a main linear motion mechanism 184 that is slidable up and down is provided on the inner wall surface of a box-shaped base 182 having an open upper end.

  A box-shaped insertion part 186 having an open lower end is fixed to the main linear motion mechanism part 184. That is, the left column 18 can be expanded and contracted by the vertical movement of the insertion portion 186 along the inner wall of the base 182. By the way, in the fully closed state of the liftable platform fence 10, all or most of the insertion part 186 is accommodated in the internal space of the base part 182.

  In addition, a slit-like insertion port 188 is opened vertically on the right side surface of the base portion 182, and the left ends of the first blocking rod 11 and the second blocking rod 12 are accommodated in the base portion 182 through the insertion port 188. Is done. The left end of the first blocking bar 11 is connected and fixed to the upper right end of the insertion portion 186. The left end of the second blocking bar 12 is further accommodated in the insertion portion 186 through a vertical slit-shaped insertion port 189 provided on the right side surface of the insertion portion 176. And it is connected and fixed to the sub linear motion mechanism part 185 slidable up and down along the inner wall of the insertion part 186.

2 ... Station platform 10 ... Elevating platform fence 11 ... First blocking bar 12 ... Second blocking bar 17 ... Right column 18 ... Left column 20 ... Lifting mechanism Part 21 ... Belt 22 ... Drive unit 23 ... Drive pulley 24 ... Upper right pulley 25 ... Upper left pulley 26 ... Lower pulley 27 ... Fixed support part 30 ... Connection Tool 40 ... Balance weight 41 ... First fixed pulley 42 ... Second fixed pulley 43 ... Moving pulley 44 ... Belt fixing tool 50 ... Control board 172 ... Base 174 ...・ Main linear motion mechanism 175 ... Sub linear motion mechanism 176 ... Interpolation

Claims (5)

An elevating type home fence that opens and closes a blocking part passed between support columns,
The strut portion is configured to include a base portion and an insertion portion that is supported slidably up and down on the inside of the base portion and has a pulley on the top and bottom.
In the support column,
An elevating mechanism for elevating the insertion part;
A cord hung on the upper and lower pulleys of the insertion part;
A fixed support portion that is positioned at a predetermined height between the upper and lower pulleys of the insertion portion, and that fixes and supports one end side of the cord-like body independently of the insertion portion;
A drive pulley for pulling or feeding the other end of the cord-like body;
Is provided,
As the blocking part,
A first blocking portion fixed to the insertion portion;
A second blocking portion connected to a portion between the upper and lower pulleys of the cord-like body and moving up and down with the vertical movement of the portion;
Comprising
The first blocking part moves up and down at the same speed as the lifting speed of the insertion part, and the second blocking part lower than the first blocking part moves up and down at a speed faster than the first blocking part, A home fence in which the first blocking portion and the second blocking portion are moved up and down in conjunction with each other. The drive pulley is provided at a height position lower than a fixed support position of the cord-like body by the fixed support portion,
The cord-like body is folded and hung in the vertical direction in the order of the fixed support portion, the lower pulley of the upper and lower pulleys, the upper pulley, and the drive pulley.
The home fence according to claim 1. The fixed support portion is provided at a predetermined position in the internal space of the insertion portion.
The home fence according to claim 1 or 2. The end side of the cord-like body is fixed after being passed through the driving pulley and then being hung on a moving pulley that suspends a weight,
The home fence as described in any one of Claims 1-3. One of the left and right struts to which the first blocking part and the second blocking part are passed, the base part, the insertion part, the lifting mechanism part, the cord-like body, the fixed support part, and the A driving pulley is provided, and the other support base is slidably supported on the other side base and the inside of the other side base up and down, and the first blocking unit is fixed and the second blocking unit is moved up and down. The other-side insertion portion that is slidably supported, and the other-side lifting mechanism portion that raises and lowers the other-side insertion portion,
The home fence as described in any one of Claims 1-4.

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