JP6759131B2 - Home fence - Google Patents

Description

The present invention relates to a home fence.

Home fence of sliding door type two-stage door called two-stage type or double door, and the home of Patent Document 1 and Patent Document 2 as a drive mechanism for opening and closing two doors using a push-pull chain or a belt. The fence is known.

FIG. 1 of Patent Document 1 discloses a configuration in which one push-pull chain is connected to the front door. When the door is closed, the push-pull chain starts moving from the front door when the push-pull chain starts moving to the front side (protruding side), and the rear door starts moving after the front door has finished moving. It becomes an operation.

FIG. 10 of Patent Document 1 discloses a configuration in which one push-pull chain for a rear door and a sprocket are added to the configuration of FIG. In the home fence of this configuration, the number of teeth of the push-pull chain for the front door is doubled, and both sprockets are attached to the same rotating shaft, so that the front door and the rear door start moving at the same time, and both doors. Moves open and close so that it expands and contracts.

FIG. 1 of Patent Document 2 discloses a configuration in which two pulleys and a set of belts are attached to the door pocket portion and the rear door, and the belt on the door pocket portion side and the rear door are connected to each other. When the motor is driven, the rear door of the home fence having the above configuration starts to move, the front door starts to move in conjunction with it, and both doors open and close so as to expand and contract.

Further, FIG. 9 of Patent Document 2 discloses a configuration in which a belt for opening and closing the rear door and a rack and pinion for opening and closing the front door are combined. In the home fence of this configuration, when the rear door is moved by the belt provided in the door pocket, the rack attached to the door pocket rotates the pinion attached to the rear door and meshes with the rack attached to the front door to engage with the rack and the front. Move the door. As a result, when the rear door starts moving, the front door also starts moving at the same time, and both doors open and close so as to expand and contract. The amount of movement of the front door is determined by the length of the rack that moves the front door.

Japanese Unexamined Patent Publication No. 2014-189040 Japanese Unexamined Patent Publication No. 2015-131525

In the configuration of FIG. 1 of Patent Document 1, after the front door has finished moving, the rear door starts moving in series, which takes time to open and close. On the other hand, in the configuration of FIG. 10 of Patent Document 1, by providing push-pull chains for the front door and the rear door, the front door and the rear door can be moved at different speeds, but push-pull chains having different pitches. Two types of sprockets are required, and two types of sprockets are also required, one of which increases the diameter of the sprockets and doubles the number of teeth.

The purpose of adopting a sliding door type two-stage door platform fence is that even if the stop position of the vehicle is slightly shifted, the opening width of the platform fence is large so that it is not a problem to get on and off, but the door spacing of the vehicle does not change, so the opening amount It is necessary to narrow the front width (horizontal width seen from the platform side) of the door pocket by the amount of expansion. However, in the configuration of FIG. 10 of Patent Document 1, since the circumference must be doubled in order to double the number of teeth of the sprocket of the push-pull chain for the front door, the diameter of the sprocket is doubled. The width of the front of the door pocket will be widened.

As for the configuration of FIG. 9 of Patent Document 2, since the door spacing of the vehicle does not change, if the opening amount of the door of the home fence is increased, the front width of the door pocket portion must be narrowed accordingly. In the case of FIG. 9 of Patent Document 2, since the rack is attached to the rear (door butt) of the front door, at least the length of the rack added to the front door is stored in the door pocket portion. If the door spacing of the vehicle does not change, there is no choice but to narrow the front width of the door pocket, and in order to narrow it, either limit the length of the rack or narrow the width of the door, in any case the home fence with a wide opening amount There is a problem that it is difficult to realize.

The present invention is based on such a background, and an object of the present invention is to secure a sufficient amount of movement of the front door and the rear door in a sliding door type two-stage door home fence, and to obtain a door pocket portion as compared with the conventional one. It is to provide a home fence with a reduced front width.

The first invention for solving the above-mentioned problems includes a front door, a push-pull chain having one end connected to the front door, and a rear door, and the front door and the rear door are provided from a door pocket portion. The door pocket portion is provided with a rack provided along the opening / closing direction, and the rear door has a drive shaft that is rotationally driven and the drive shaft. A sprocket that rotates in conjunction with the push-pull chain and meshes with the push-pull chain, a chain guide that guides one end side of the push-pull chain from the sprocket in the opening / closing direction, and a chain guide that rotates in conjunction with the drive shaft. A pinion that meshes with the rack is provided, and when the drive shaft rotates, the rear door moves due to the meshing of the pinion and the rack, and the front door moves due to the meshing of the sprocket and the push-pull chain. Is a moving home fence.

In the second invention, the specifications of the sprocket, the rack, and the pinion are set so that the moving speed of the front door is twice or substantially twice the moving speed of the rear door. It is a home fence of the invention of 1.

A third invention comprises the rear door comprising a drive gear coupled to the drive shaft and a driven gear having a gear ratio of 1: 1 to the drive gear and coupled to the pinion. The home fence of the first invention, wherein the meshing radius of the pinion with the rack and the meshing radius of the sprocket with the push-pull chain are set to 1: 1.

In the fourth invention, one end thereof is connected to the lower part of the front door on the door end side, the chain guide is provided laterally to the lower part of the rear door, and the sprocket is the rear door. The rear door is provided at the lower part of the door tail side of the rear door, and the rear door is provided with a vertical chain guide for vertically guiding the other end side of the push-pull chain from the sprocket on the door tail side of the rear door. , The home fence of any one of the first to third inventions.

According to the first invention, in a so-called sliding door type two-stage door home fence, the front door and the rear door are housed in the door pocket while the front door and the rear door are sufficiently moved. The gap at the back (the back side along the opening / closing direction of the front door / rear door) can be reduced. That is, it is possible to realize a home fence with a reduced front width of the door pocket.

In the first invention, since only one set of push-pull chain and sprocket needs to be provided in order to move the front door with respect to the rear door, a second large diameter like the home fence of FIG. 10 of Patent Document 1 is required. It is not necessary to incorporate the sprocket in the door pocket, and the gap at the back of the door pocket (the back side along the opening / closing direction of the front door / rear door) can be reduced. As a result, the front width of the door pocket can be kept small.

Further, by adopting a push-pull chain as a mechanism for moving the front door, a space for accommodating a rack provided on the rear side (door tail side) of the front door like the home fence of FIG. 9 of Patent Document 2 can be provided. There is no need to secure it in the door pocket.

That is, since the push-pull chain is flexible, by moving the front door with respect to the rear door, the push-pull chain attracted to the rear door side can be handled in an appropriate direction, as described in Patent Document 2. Unlike the rack in the home fence of FIG. 9, it does not protrude into the door pocket portion, and the gap in the depth of the door pocket portion can be reduced.

According to the second invention, since the front door can move at double speed of the rear door, the time required for opening and closing can be shortened. Similarly, according to the third invention, since the front door can move at double speed of the rear door, the time required for opening and closing can be shortened.

According to the fourth invention, since the front door is pushed / pulled downward, the front door can be moved smoothly. Further, since the rear door is also pushed / pulled on the lower side, the rear door can also be moved smoothly.

It is a front sectional view of the platform fence of this embodiment seen from the platform side, and is the AA sectional view of FIG. A side view of the home fence of the present embodiment as viewed from the left side when facing the front. It is the top view of the home fence of this embodiment, and is the BB sectional view of FIG. Enlarged view of the meshing part between the push-pull chain and the sprocket as seen from the platform side. It is an enlarged view which shows the structural example of the drive system around a sprocket, and is the enlarged view on the left side surface seen from the left facing the front of a home fence. The figure which shows the "fully open state" of the home fence which the front door and the rear door have been stored inside the door pocket part. The front sectional view seen from the platform side which shows the modification of the home fence of this embodiment. A side view seen from the left side when facing the front showing a modified example of the home fence of the present embodiment. A side view seen from the left side when facing the front showing a modified example of the home fence of the present embodiment.

An embodiment of a home fence to which the present invention is applied will be described.
FIG. 1 is a front sectional view of the platform fence of the present embodiment as viewed from the platform side, and corresponds to the AA sectional view of FIG.
FIG. 2 is a left side view seen from the left side when facing the front of the home fence of the present embodiment. However, the door pocket is represented by a cross section.
FIG. 3 is a top view of the home fence of the present embodiment, and is a cross-sectional view taken along the line BB of FIG.

As shown in these figures, the home fence 10 of the present embodiment is a sliding door type two-stage door home fence in which two door panels of the front door 20 and the rear door 30 can be accommodated in the door pocket portion 40.

In the home fence 10 of the present embodiment, the front door 20 and the rear door 30 are taken in and out from the left side when facing the front of the door pocket portion 40, and the door pocket portion 40 is installed on the right side of the vehicle boarding / alighting position when viewed from the platform 3. Although it is exemplified as a "right-mounted type", the "left-mounted type" in which the structure is reversed left and right, that is, the front door 20 and the rear door 30 are taken in and out from the right side of the door pocket 40 and viewed from the platform 3. The door pocket portion 40 may be installed on the left side of the vehicle boarding / alighting position. Then, on the platform 3, "right-mounted type" and "left-mounted type" are arranged and used on the left and right of the vehicle boarding / alighting position. Alternatively, the "right-mounted type" or "left-mounted type" can be arranged and used as a single unit according to the vehicle boarding / alighting position.

The front door 20 has a front door hanging roller 22 on the upper rear side (upper door tail side). In the present embodiment, there are two sets of front door suspension rollers 22, one set up and down, and each set of rollers up and down the front door guide rail 32 provided on the upper part of the inside of the rear door 30 along the opening and closing direction. It is sandwiched from. That is, the front door 20 is slidably suspended and supported with respect to the rear door 30 along the opening / closing direction.

Further, at the lower end portion of the rear side (door tail side) of the front door 20, a chain fixture 24 for fixing the end portion on the tip end side of the push-pull chain 50 is provided. That is, since the front door 20 is pushed / pulled at the lower part while being suspended at the upper part, it moves smoothly with respect to the rear door 30.

Next, the rear door 30 is supported between the upper support roller 42 provided on the upper inner surface on the front side of the door pocket portion 40 and the lower support roller 44 provided on the lower inner surface on the front side. That is, the rear door 30 is slidable in the opening / closing direction inside the door pocket portion 40.

In addition to the front door guide rail 32, the rear door 30 has 1) an opening / closing direction chain guide 34 that guides the front side of the push-pull chain 50 in the opening / closing direction (lateral direction), and 2) rear of the push-pull chain 50. It includes a vertical chain guide 36 that guides the end side in the vertical direction (height direction), and 3) a sprocket 52 that meshes with a push-pull chain 50 provided at the lower part on the rear side (door tail side).

FIG. 4 is an enlarged view of the meshing portion between the push-pull chain 50 and the sprocket 52 as viewed from the platform side.

As shown in FIGS. 1 and 4, the opening / closing direction chain guide 34 extends from the lower end portion on the front side of the rear door 30 to the lower end portion on the rear side along the opening / closing direction, and from the inner side surface on the track side of the rear door 30 to the platform side. It is extended toward. The portion of the push-pull chain 50 on the tip side of the sprocket 52 slides on the upper surface of the opening / closing direction chain guide 34 in the opening / closing direction, and is supported / guided along the opening / closing direction.

The sprocket 52 is provided at a position further rearward than the rear end portion of the opening / closing direction chain guide 34.

The vertical chain guide 36 extends further rearward than the sprocket 52 in the vertical direction along the rear end edge of the rear door 30 from the inner side surface of the rear door 30 on the track side toward the platform side. The push-pull chain 50 on the rear side of the sprocket 52 is guided in the vertical direction (vertical direction) of the rear door 30. The push-pull chain 50 is slidably guided and accommodated in the vertical chain guide 36 after the direction of the chain is changed from the horizontal direction to the vertical direction by engaging with the sprocket 52.

That is, the push-pull chain 50 is pushed / pulled along an L-shaped path along the lower part of the rear door 30 and the rear end edge when viewed from the platform side. Regardless of the movement of the front door 20, the push-pull chain 50 does not protrude into the door pocket portion 40 from the rear end of the rear door 30.

FIG. 5 is an enlarged view showing a configuration example of the drive system around the sprocket 52, and is an enlarged view on the left side surface of the platform fence 10 as viewed from the left when facing the front.

As shown in FIGS. 1 and 5, the sprocket 52 is rotatably fixed to a driven shaft 54 facing the track-platform direction (the drawing depth direction with respect to FIG. 1 and the drawing left-right direction in FIG. 5) with respect to the rear door 30. Has been done.

The track side of the driven shaft 54 is rotatably supported by a bearing 56 on the inner surface of the rear door 30 on the track side. On the other hand, the driven gear 60 is fixed on the platform side of the driven shaft 54.

The driven gear 60 meshes with a drive gear 62 provided at a position lower than the driven gear 60, and the drive gear 62 is fixed to a drive shaft 64 located below the driven shaft 54. The drive shaft 64 is connected to a speed reduction mechanism 66 fixed to the inner surface of the rear door 30 on the raceway side. That is, the drive shaft 64 is rotatably supported with respect to the rear door 30.

The speed reduction mechanism 66 reduces the rotation of the output shaft of the electric motor 68 (see FIG. 1) provided on the outer surface of the rear end of the rear door 30, and transmits the driving force to the drive shaft 64. The configuration of the reduction mechanism 66 can be appropriately set. For example, it may be realized by a plurality of gears, or a toothed belt and a pulley may be adopted. Chains and sprockets may be used.

A pinion 70 is fixed to the drive shaft 64.
The pinion 70 meshes with the rack 72 provided along the opening / closing direction on the bottom of the door pocket 40 (or the upper surface of the pedestal (not shown) for fixing to the platform 3 in the configuration where the door pocket 40 has no bottom surface). It is configured (see FIG. 1).

In the present embodiment, the specifications of the push-pull chain 50, the sprocket 52, the driven gear 60, the drive gear 62, and the pinion 70 are the peripheral speed at the meshing position between the push-pull chain 50 and the sprocket 52, and the pinion 70. The peripheral speed at the meshing position with the rack 72 is adjusted to be the same or substantially the same. In other words, the specifications of the sprocket 52, the rack 72, and the pinion 70 are set so that the moving speed of the front door 20 is twice or substantially twice the moving speed of the rear door 30.

Specifically, in the present embodiment, the driven gear 60 and the driving gear 62 have a gear ratio of 1: 1. Then, the meshing radius from the rotating shaft of the sprocket 52 to the meshing of the push-pull chain 50 and the sprocket 52 and the meshing radius from the rotating shaft of the pinion 70 to the meshing with the rack 72 are set to have the same diameter. ing.

Next, the operation of the home fence 10 of the present embodiment will be described.
FIG. 1 shows a “fully closed state” of the home fence 10 in which the front door 20 and the rear door 30 have completely protruded from the door pocket portion 40. On the other hand, FIG. 6 shows a “fully open state” of the home fence 10 in which the front door 20 and the rear door 30 have been stored inside the door pocket portion 40.

In order to change the state of the home fence 10 from the fully closed state to the fully open state, the electric motor 68 is driven to rotate the pinion 70 "clockwise" when viewed from the platform side. Then, the pinion 70 meshes with the rack 72 and rotates, so that the rear door 30 moves toward the door pocket portion 40.

Then, as the pinion 70 rotates clockwise, the rotational force is transmitted in the order of the driving gear 62 and the driven gear 60, and the sprocket 52 rotates "counterclockwise" when viewed from the platform side. Due to the rotation of the sprocket 52, the tip end side portion of the push-pull chain 50 guided by the opening / closing direction chain guide 34 is pulled toward the door tail (rear side) of the door pocket portion 40, and the front door 20 is toward the rear door 30. Move to. Since the push-pull chain 50 pulled in the door tail direction is guided by the vertical chain guide 36, the push-pull chain 50 does not go out from the rear door 30 to the inside of the door pocket 40, and the push-pull chain 50 does not go out to the inside of the door pocket 40 by that amount. The front width of the door pocket portion 40 of the present embodiment can be made smaller than that of the conventional one.

Then, when the rear door 30 is moved by a predetermined distance, or when the gears of the drive system such as the electric motor 68, the sprocket 52, and the pinion 70 are rotated by a predetermined rotation speed, the fully opened state is reached.

In order to return the home fence 10 from the fully open state to the fully closed state, the electric motor 68 may be rotated in the reverse direction. That is, the sprocket 52 rotates "clockwise" to pull out the push-pull chain 50 from the vertical chain guide 36 and send it out along the opening / closing direction chain guide 34. The front door 20 is pushed forward by the push-pull chain 50, and the front door 20 moves so as to precede the rear door 30. In conjunction with this, the pinion 70 "counterclockwise" rolls the rack 72 toward the front side, so that the rear door 30 moves toward the front side (door end side) with respect to the door pocket portion 40.

As described above, according to the present embodiment, in the home fence of the sliding door type two-stage door, the front door and the rear door are housed in the door pocket while ensuring a sufficient amount of movement of the front door and the rear door. It is possible to realize a home fence with a reduced front width of the door pocket by reducing the depth gap.

[Modification example]
The embodiment to which the present invention can be applied is not limited to the above embodiment, and components can be added, omitted, or changed as appropriate.

For example, in the above embodiment, the electric motor 68 is fixed to the rear end surface of the rear door 30 (see FIG. 1), but for example, as in the home fence 10B of FIGS. 7 and 8, the rear door 30 It may be provided on the lower part, the outer surface on the raceway side below the opening / closing direction chain guide 34. More specifically, a through hole 38 (see FIG. 8) is provided, the speed reduction mechanism 66 and the drive shaft 64 are communicated with each other through the through hole 38, and the electric motor 68 is laterally placed on the outer surface of the rear door 30 on the raceway side. It may be provided so that it can be laid down.

Further, the relationship between the driven shaft 54 and the drive shaft 64 in the above embodiment can be reversed. Specifically, as shown in the platform fence 10C of FIG. 9, the shaft of the sprocket 52 is used as the drive shaft 64, the reduction mechanism 66 is connected to the track side thereof, and the gear fixed to the platform side is the drive gear 62. .. Then, the shaft of the pinion 70 may be a driven shaft 54, and the gear on the platform side thereof may be a driven gear 60.

3 ... Platform 10, 10B, 10C ... Home fence 20 ... Front door 22 ... Front door hanging roller 24 ... Chain fixture 30 ... Rear door 32 ... Front door guide rail 34 ... Opening and closing direction chain guide 36 ... Vertical chain guide 38 ... Through hole 40 ... Door pocket 42 ... Upper support roller 44 ... Lower support roller 50 ... Push-pull chain 52 ... Sprocket 54 ... Driven shaft 56 ... Bearing 60 ... Driven gear 62 ... Drive gear 64 ... Drive shaft 66 ... Reduction mechanism 68 ... Electric motor 70 ... Pinion 72 ... Rack

Claims (3)

A home fence that includes a front door, a push-pull chain whose one end is connected to the front door, and a rear door, and moves the front door and the rear door from the door pocket in an opening / closing direction. There,
The door pocket is
Racks provided along the opening / closing direction,
With
The rear door
A drive shaft that drives in rotation and
The drive gear fixed to the drive shaft and
A motor for driving the drive gear and
A sprocket that is fixed to a driven gear that meshes with the drive gear, rotates with the driven gear, and meshes with the push-pull chain.
A chain guide that guides one end side of the push-pull chain from the sprocket in the opening / closing direction, and
A pinion fixed to the drive shaft and meshing with the rack,
With
The meshing of the drive gear and the driven gear causes the rotation direction of the pinion and the rotation direction of the sprocket to be opposite to each other, so that the rotation of the drive shaft in one direction causes the pinion to mesh with the rack. the mobile and the rear door, the home fence to carry out the movement of the other party door that by the engagement between the sprocket and the push-pull chain in parallel in the same direction that. The specifications of the sprocket, the rack, and the pinion were set so that the moving speed of the front door was twice or substantially twice the moving speed of the rear door.
The home fence according to claim 1. The one end is connected to the lower part of the front door on the door tail side.
The chain guide is provided laterally below the rear door.
The sprocket is provided at the lower part of the rear door on the door tail side.
The rear door
A vertical chain guide for guiding the other end side of the push-pull chain from the sprocket in the vertical direction is provided on the door tail side of the rear door.
The home fence according to claim 1 or 2 .

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