JP3336306B2 - Chain gate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chain gate which is installed at an entrance of a parking lot or the like and which controls the traffic of a vehicle by operating a chain up and down.

[0002]

2. Description of the Related Art As a conventional chain gate, as shown in FIG. 9, one end of a chain 3 is fixed to a fixed side column 2 of a pair of columns 1 and 2 which are erected at an interval, and a driving side column is formed. In FIG. 1, a weight 45 is attached to the other end of the chain 3 and the chain 3 is hung and supported by a pulley 5. One end of the chain 3 is pulled out from the pulley 5 to the fixed column 2 and the other end of the chain 3 is connected to the pulley 5. Some have a configuration pulled down. Here, a protrusion is provided on the outer periphery of the pulley 5 for engaging the chain 3 with the outer periphery of the pulley 5 by engaging with the chain 3.

In this chain gate, as shown in FIG. 9 (a), the pulley 5 is rotated in a direction of pulling one end of the chain 3 sideways from a state in which the chain 3 is stretched between a pair of columns 1 and 2. By doing so, the chain 3 is extended from the driving-side support column 1, and as shown in FIG. 9B, the chain 3 is loosened and grounded between the pair of columns 1, 2, and the space between the pair of columns 1, 2 is formed. It is open as a doorway.

On the other hand, from the state where the chain 3 is loosened between the columns 1 and 2, the pulley 5 is rotated in a direction to pull down the other end of the chain 3 so that the chain 3 is driven. Pull back inside, a pair of struts 1,
A chain 3 is stretched between the two to close an entrance between the columns 1 and 2.

[0005]

However, in the above-described chain gate, as shown in FIG. 10 (a), the chain 3 is supported only on the area of about 1/4 of the outer circumference of the pulley 5. In addition, the tension applied to the chain 3 in the portion pulled downward from the pulley 5 is only the own weight of the chain 3 in this portion, and the holding force of the chain 3 in the pulley 5 is low. Therefore, when the pulley 5 rotates or the chain 3 is strongly pulled,
The chain 3 swings below the pulley 5 as shown in FIG. 10B, or the chain 3 loosens as shown in FIG. 10C, and the chain 3 comes off the pulley 5. was there.

When the chain 3 is lifted so as to be drawn into the pulley 5 below the pulley 5 by rotating the pulley 5, when the chain 3 is twisted, the protrusion of the pulley 5 and the chain around the outer periphery of the pulley 5 3 does not mesh well, and the driving force from the pulley 5 is not transmitted to the chain 3 and the chain 3 runs idle, or the chain 3
Sometimes got out of the way.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and is directed to a chain gate that opens and closes an entrance by rotating and driving a pulley to extend and retract a chain supported on the pulley. An object of the present invention is to provide a chain gate capable of stably holding a chain and preventing the chain from being detached from a pulley.

[0008]

A chain gate according to a first aspect of the present invention is provided with a pulley 5 rotatably driven provided inside a column 1 and supported on the outer periphery of the pulley 5, one end of which is supported by the pulley 5. Pulled out to the side and out of opening 14 of column 1
A chain 3 fixed so as to be pulled out toward the part and arranged so that the other end is pulled down from the pulley 5; and one of the chains 3 pulled down from the pulley 5 below the pulley 5. center line of the section is, contrary to the opening 14
Pull down vertically from the outer peripheral surface of the pulley 5 on the side
And a guide portion 4 for guiding the arrangement position of the chain 3 so as to be located closer to the opening 14 than the tangent line .

In addition to the above configuration, a vertical guide groove 18 is formed on the side surface of the guide portion 4 along the shape of the chain 3 pulled down from the pulley 5 downward. Is what you do.

[0010]

According to a second aspect of the present invention, in addition to the configuration of the first aspect, the chain 3 is attached to the tip end of the chain 3 pulled downward from the pulley 5 via an elastic body. A locking plate, a locking portion that abuts on the upper surface of the locking plate and locks the upward movement of the locking plate, and a locking plate that is locked by the locking portion. Limit switch 13 in which push button 20 is pressed by stop plate 7
The pulley 5 is rotated and the push button 20 of the limit switch 13 is pressed to release the limit switch 1
Motor 15 whose rotation drive is stopped when the motor 3 operates
Characterized by comprising:

[0012]

[0013]

Embodiments of the present invention will be described below.

As shown in FIG. 8, one end of a chain 3 is fixed to one of the columns 2 (hereinafter referred to as a fixed column 2) of a pair of columns 1 and 2 which are erected at an interval. The weight 45 is disposed so as to be vertically slidable. Here, one end of the chain 3 is inserted into an insertion hole formed in the weight 45, so that the weight 45 is disposed so as to slide on the chain 3 and slide up and down while applying the load to the chain 3. ing.

The other support 1 (hereinafter referred to as a drive support 1)
That. In the upper part of the side surface facing the fixed column 2, an opening 14 serving as a feed-out port and a pull-back port of the chain 3 is provided so as to communicate the inside and the outside of the driving column 1. I have. In addition, a pulley 5 is provided inside the driving-side support column 1 at the back of the opening 14. Here, since the motor 15 for transmitting the rotational driving force to the pulley 5 is provided in the drive-side column 1, the pulley 5
Is rotatably provided.

The other end of the chain 3 is
By being drawn into the inside of the driving side support 1 from the opening 14 of the drive side, it is housed inside the driving side support 1.

Inside the drive-side support 1, the chain 3
Is supported on the outer periphery of the pulley 5, and
Is arranged so that one end side of the chain 3 is pulled out to the side, and further pulled out from the opening toward the outside,
The other end of the chain 3 is disposed so as to be pulled down from the pulley 5 inside the driving-side support 1.

In the chain gate thus constructed, a pair of columns 1 and 1 as shown in FIG.
When the pulley 5 is rotated in a direction in which one end side of the chain 3 is pulled out from the state where the chain 3 is stretched between the two, the chain 3 is extended from the drive-side support column 1 as shown in FIG. The chain 3 is loosened and grounded between the pair of columns 1 and 2, and the space between the pair of columns 1 and 2 is opened as an entrance.

Conversely, from the state where the chain 3 is loosened between the columns 1 and 2 as shown in FIG. 8B, the pulley 5 is rotated in a direction to pull down the other end of the chain 3 downward. As a result, the chain 3 is pulled back into the driving-side column 1, and the chain 3 is stretched between the pair of columns 1 and 2 as shown in FIG. .

In the chain gate having the above-described configuration, in the embodiment of the present invention, the chain 3 is a piece 3 formed by forming a resin or metal wire into a ring shape.
a and 3b are connected in a rosary connection, and the pieces 3a and 3b constituting the chain 3 are horizontal pieces 3a which are arranged substantially horizontally when the chain 3 is stretched.
And vertical pieces 3b arranged substantially at right angles to the horizontal pieces 3a are alternately connected.

The driving-side support 1 is formed as shown in FIGS. In the illustrated example, the driving-side support column 1 is formed in a hollow rectangular column shape. Around the opening 14, it is disposed so as to protrude outward so as to surround the opening 14.
A guide frame 17 is provided to guide the chain 3 in the extending and retracting directions. In addition, a tilting unit 10 is disposed in the driving-side column 1 behind the opening 14.

The tilting unit 10 has an opening 1 at its lower part.
On the fourth side, it is pivotally connected to the drive-side support 1 by a rotating shaft 11.

A limit switch 6 (hereinafter referred to as an upper limit switch 6) is provided on the opening 14 side of the upper part of the tilting unit 10. The push button 19 of the upper limit switch 6 is disposed so as to protrude forward of the tilting unit 10. When the tilting unit 10 rotates around the rotation shaft 11 and tilts toward the opening 14,
The push button 19 abuts on the inner surface on the front side of the driving-side support 1, and the upper limit switch 6 is operated. The upper limit switch 6 is configured to stop driving the motor 15 when the push button 19 is pressed to operate.

When the tilting unit 10 rotates about the rotation shaft 11 and tilts in the direction opposite to the opening 14, the tilting unit A locking piece 12 is provided, which is locked by abutting the lower end opposite to the opening 14 of 10.

Therefore, the tilting unit 10 is provided on the driving support 1.
In contrast, the upper limit switch 6 is tilted in a direction approaching the opening 14 to be in contact with the inner surface of the driving-side support 1, and is tilted away from the opening 14 to be locked by the locking piece 12. It is provided so as to be rotatable around the rotating shaft 11 between the closed states.

Further, above the tilting unit 10, a coil spring 16 is disposed in the front-rear direction. One end of the coil spring 16 is fixed to the upper end of the tilting unit 10 on the side of the opening 14, and the other end is fixed to the inner surface of the driving-side column 1 on the side opposite to the opening 14. Therefore, the opening unit 1 is provided to the tilting unit 10 by the coil spring 16.
The turning force directed to the opposite side to No. 4 is energized.

The tilting unit 10 is provided with a pulley 5 in an area sandwiched between the rotating shaft 11 and the coil spring 16, and a motor 1 for transmitting a rotational driving force to the pulley 5.
5 are provided.

As shown in FIGS. 3 and 4, the pulley 5 has an outer plate 33 integrally formed on one surface of a disk-shaped inner plate 34 such that the outer edge of the outer plate 33 projects from the outer periphery of the inner plate 34. It is composed of a pair of pulley plates 32 having a shape. Outer plate 33
Has an outer peripheral shape formed in a regular polygonal shape having the same center as the center of the inner plate 34, and a locking projection 35 projecting outward from a vertex portion of the outer peripheral surface. In the illustrated example, the outer peripheral shape of the outer plate 33 is formed in a regular pentagonal shape.

The pair of pulley plates 32 are connected to an outer plate 33.
The pulleys 5 are configured by overlapping the inner plates 34 with each other in a state where the positions of the locking projections 35 are aligned with each other by adjusting their shapes. Here, on both sides of the pulley 5, disk-shaped guide plates 30 which are larger in diameter than the outer peripheral surface of the pulley 5 and are concentric with the pulley 5 are arranged. Further, a fixing block 31 is arranged on the outer surface of one guide plate 30. And this fixing block 3
A bolt 38 is inserted into a fixing hole 40 formed in the fixing plate 1 and a fixing hole 42 of each guide plate 30 and a fixing hole 41 of the pulley plate 32 formed so as to correspond to the fixing hole 40. A nut 39 is screwed to an end of a bolt 38 protruding from the guide plate 30 on the side opposite to the fixed block 31.
As described above, the pair of pulley plates 32 are fixed to each other by the bolts 38 and the nuts 39 serving as fixing tools, and
Are formed and guide plates 3 are provided on both sides of the pulley 5.
0 is provided.

On the outer peripheral surface of the pulley 5 thus configured, a concave groove 36 whose bottom surface is formed by the outer peripheral surface of the inner plate 34 is formed over the entire periphery. On both sides, a plurality of locking projections 35 are formed at equal intervals over the entire circumference.

Here, the width of the outer peripheral surface of the pulley 5 is formed to be slightly larger than the width of the horizontal piece 3a constituting the chain 3. The width of the concave groove 36 is formed so as to be slightly larger than the wire diameter of the wire constituting the vertical piece 3 b of the chain 3. Further, the interval between the protrusions adjacent to each other in the circumferential direction of the pulley 5 is formed substantially the same as the length of the horizontal piece 3a, and the circumferential width of the protrusion is connected via one vertical piece 3b of the chain 3. The space between the two horizontal pieces 3a is substantially the same.

In the portion of the chain 3 supported by the pulley 5, the horizontal pieces 3a constituting the chain 3 are arranged along the outer peripheral surface of the pulley 5, and the vertical pieces 3b are connected to the outer peripheral surface of the pulley 5. Are arranged so as to be substantially orthogonal to the. At this time, the horizontal pieces 3a are arranged one by one in an area between the adjacent protrusions on the outer peripheral surface of the pulley 5 so as to be supported by the peripheral surface of the outer plate 33, and the front end and the rear end of the horizontal piece 3a. Is locked to the locking projection 35. Further, projecting portions of the guide plate 30 are arranged on both sides of the horizontal piece 3a to prevent the horizontal piece 3a from being displaced in the horizontal direction. On the other hand, a part of the vertical piece 3 b disposed on the outer peripheral surface side of the pulley 5 is fitted into the concave groove 36.

As described above, the outer peripheral surface of the pulley 5 is
Is formed along the shape of the pulley 5, and a locking projection 35 for locking the chain 3 is formed on the outer peripheral surface of the pulley 5, so that the chain 3 is supported by the pulley 5 and supported. The engaging portion is locked to the outer peripheral surface of the pulley 5 by the locking projection 35, so that the rotational driving force of the pulley 5 is transmitted to the chain 3, and the chain 3 is positioned at the outer peripheral surface of the pulley 5. The pulley 5 is stably held without being shifted, and is prevented from coming off the pulley 5 or idling.

Below the pulley 5, a vertically extending guide portion 4 is provided below the tilting unit 10. As shown in FIG. 5, a guide groove 18 that opens forward is formed on the front surface of the guide portion 4 on the opening 14 side of the drive-side support column 1 in the vertical direction. The guide groove 18 is formed in a shape following the shape of the chain 3 that is pulled down below the pulley 5,
It comprises a shallow groove 27 having a substantially U-shaped cross section, and a deep groove 28 formed narrower than the shallow groove 27 so as to open in front of the shallow groove 27. Here, the width of the shallow groove 27 is
It is formed slightly larger than the width of the horizontal piece 3a of the chain 3,
The width of the deep groove 28 is formed to be slightly larger than the wire diameter of the wire constituting the vertical piece 3 b of the chain 3.

A part of the chain 3 pulled down from the pulley 5 is provided on the front side of the guide portion 4 with a guide groove 18.
Are arranged along. At this time, the chain 3 is pulled down from the pulley 5 to the guide portion 4 without twisting or twisting. In this state, the horizontal pieces 3a constituting the chain 3 are placed in the shallow grooves 27 along the front surface of the guide portion 4. On the other hand, the vertical piece 3b is disposed so as to be orthogonal to the front surface of the guide part 4, and a part of the vertical piece 3b disposed on the guide part 4 side is fitted into the deep groove 28. . For this reason, the chain 3 disposed below the pulley 5 is corrected by the guide portion 4 so as not to cause twisting or twisting.

Here, assuming a tangent drawn vertically downward from the outer peripheral surface of the pulley 5 on the side opposite to the opening 14, the guide portion 4 is closer to the rotation shaft 29 of the pulley 5 than this tangent. In the opening 14 side), the center line of the chain 3 is
The chain 3 is arranged to guide the chain 3 so as to be arranged substantially vertically. Therefore, the front surface of the guide portion 4 is disposed closer to the rotation shaft 29 than the tangent line described above. Therefore, compared with the case where the chain 3 is pulled down vertically from the pulley 5 only by its own weight, the portion of the chain 3 supported on the outer peripheral surface of the pulley 5 The chain 3 is further entangled, and the swing of the chain 3 in the region from below the pulley 5 to the guide portion 4 is prevented. Therefore, the chain 3 is stably supported and supported by the pulley 5, and the chain 3 from the pulley 5 when the pulley 5 is rotationally driven.
Is prevented from coming off or jumping.

A guide plate 9 is provided in front of the guide section 4. The guide plate 9 is vertically arranged along the chain 3 on the side opposite to the guide 4 of the chain 3 arranged on the front side of the guide 4.
The chain 3 is guided by the surface of the guide plate 9 opposite to the guide plate 9 so as not to be detached from the guide groove 18 of the guide portion 4.

Below the guide plate 9, a limit switch 13 (hereinafter referred to as a lower limit switch 13) is provided. The push button 20 of the lower limit switch 13 is disposed so as to project downward from the lower end of the guide plate 9. The lower limit switch 13 is actuated by the push button 20 being pressed, so that the motor 1
5 is stopped.

A locking plate 8 is provided below the guide portion 4 and on the side opposite to the position where the chain 3 is arranged. The lower surface of the locking plate 8 is formed substantially horizontally, and the lower surface is arranged at the same height as the lower end of the guide plate 9.

Further, the guide portion 4, the guide plate 9, and the outer plate 3
The space below 3 is formed as a chain pool 26 in which the chain 3 pulled back to the drive-side support 1 is stored.

In this drive side support 1, the chain 3
Is disposed below the guide portion 4, the guide plate 9, and the outer plate 33. A locking plate 7 is attached to an end of the chain 3 via an elastic body.

The elastic body is composed of a coil spring 21 having hooks 22 and 23 formed by bending both ends into an S-shape. A hook 22 at one end of the coil spring 21 is hooked on a vertical piece 3b or a horizontal piece 3a constituting an end of the chain 3. The hook plate 23 on the other end of the coil spring 21 is hooked with the locking plate 7.

As shown in FIGS. 6 and 7, the locking plate 7 is provided by attaching a cushion material 24 made of rubber, sponge, or the like to the upper surface of a metal disc-shaped lower plate 25. It is constituted by the following. The cushion member 24 has a slit-shaped notch 43 that opens from above and below the cushion member 24 and extends from the outer peripheral surface to the center.
Are formed. In the center of the lower plate 25,
Below the notch 43, a pair of hook holes 44 are formed along the notch 43. The locking plate 7 is provided with a hook 23 at the other end of the coil spring 21 and a notch 43.
The hook 23 is temporarily inserted through the hooking hole 44 from above to below, and is further inserted through the other hooking hole 44 from below to above. For this reason, the locking plate 7 is hooked to the other end of the coil spring 21 at the center of gravity, and
As shown in the figure, the coil spring 21 is disposed substantially vertically and substantially horizontally.

Since the hook 23 on which the locking plate 7 is hooked has the lower plate 25 hooked through the two hook holes 44, the hook 23 supports the lower plate 25 at two points. In addition, the swing around the axis in the direction orthogonal to the direction along the arrangement direction of the hook holes 44 is prevented.
Further, since the hooks 23 are arranged so as to be sandwiched between the inner surfaces on both sides of the notch 43, both sides of the hook 23 are supported by the inner wall surfaces on both sides of the notch 43, and are located along the notch 43. Swing about an axis in the direction (direction along the arrangement direction of the hook holes 44) is prevented. Therefore, swing of the locking plate 7 with respect to the hook 23 is suppressed, and the locking plate 7 is stably held in a substantially horizontal state.

In the driving-side column 1 constructed as described above, the chain 3 is stretched between the pair of columns 1 and 2 as shown in FIG. In this state, the chain 3 pulled down from the pulley 5 is sufficiently pulled down below the guide portion 4 and stored in the chain pool 26.

From this state, when the chain gate is opened by loosening the chain 3 between the columns 1 and 2 to ground as shown in FIG. The pulley 5 is driven to rotate so that the pulley 5 comes out. At this time, the chains 3 arranged in the chain pool 26 below the pulley 5 are sequentially fed out and the locking plate 7 is raised.

At this time, since the twisting and twisting of the chain 3 are prevented by the guide portion 4 below the pulley 5, the twisting and twisting of the chain 3 on the outer peripheral surface of the pulley 5 are also prevented, and the chain from the pulley 5 is prevented. 3 is prevented from desorbing. Here, even if the chain 3 is twisted or twisted below the guide portion 4, as shown in FIG. 5B, the guide groove 1 is moved while the chain 3 moves upward along the guide portion 4.
8, so that twisting and twisting are corrected. In addition, the chain 3 drawn into the pulley 5 from below the pulley 5 is introduced with the horizontal piece 3a along the outer peripheral surface of the pulley 5 and the vertical piece 3b is introduced with the vertical piece 3b orthogonal to the outer peripheral surface of the pulley 5. Therefore, the pulley 5 is introduced into the pulley 5 while being locked to the outer peripheral surface of the pulley 5 as it is, so that the pulley 5 is prevented from idling and the chain 3 is reliably fed out by the pulley 5.

As a result of feeding the chain 3 as described above,
The chain 3 is loosened and grounded between the columns 1 and 2, and accordingly, the locking plate 7 moving upward in the driving column 1 comes into contact with the lower surface of the locking plate 8 and the lower end of the guide plate 9. And locked. That is, the locking plate 8 and the guide plate 9 constitute a locking portion that locks the upward movement when the locking plate 7 moves upward. At this time, the locking plate 7 is pushed by the push button 20 of the lower limit switch 13.
Is pressed to operate the lower limit switch 13 and the pulley 5
Is stopped, and the feeding of the chain 3 is automatically stopped. Here, from the time when the locking plate 7 abuts on the lower surface of the outer plate 33 and the lower end of the guide plate 9 and is locked, until the motor 15 is completely stopped and the rotation of the pulley 5 is stopped. Even if a time lag occurs, the rotation of the pulley 5 during this time is absorbed by the extension of the coil spring 21 which is an elastic body, and the chain 15 between the pulley 5 and the locking plate 7 is locked by the motor 15 locked.
Excessive tension may be applied to the
5 is prevented from being overburdened.

When the locking plate 7 is locked, the lower surface of the locking plate 8 and the lower end of the guide plate 9 come into contact with the cushion member 24 on the upper surface of the locking plate 7. It is possible to alleviate the impact when the locking plate 7 contacts the outer plate 33 and the guide plate 9 to suppress the generation of an impact sound and the detachment of the chain 3 from the pulley 5 due to the impact. Further, the impact applied to the lower limit switch 13 when the push button 20 of the lower limit switch 13 is pressed on the upper surface of the locking plate 7 can be reduced to prevent the lower limit switch 13 from being damaged.

When the chain 3 is stretched between the columns 1 and 2 from the state where the entrance of the chain gate is opened, and the entrance between the columns 1 and 2 is closed, the pulley 5 is used.
Is driven in a direction in which the other end of the chain 3 is pulled down, thereby pulling the chain 3 back into the driving-side support 1. At this time, below the pulley 5,
The locking plate 7 descends and is placed on the bottom surface of the chain pool 26, and the chains 3 pulled back to the driving support 1 are sequentially supplied from above to the locking plate 7,
Although the locking plate 7 and the chain 3 collide, the shock when the locking plate 7 and the chain 3 collide is alleviated by the cushion material 24 provided on the upper surface of the locking plate 7, and an impact sound is generated. Is prevented.

By pulling the chain 3 back to the driving support 1 in this manner, when the slackened chain 3 is stretched between the supports 1 and 2, a lateral tension is applied to the chain 3 accordingly. . Due to the tension of the chain 3, the tilting unit 10 tilts toward the opening 14 against the elastic force of the coil spring 21, and the push button 19 of the upper limit switch 6 moves the opening 14 of the driving-side column 1.
The upper limit switch 6 is actuated by being pressed by the inner surface on the side, the motor 15 driving the pulley 5 is stopped, and the pulling back of the chain 3 is automatically stopped.

[0052]

As described above, the chain gate according to the first aspect of the present invention has a pulley that is rotatably driven and provided inside the column, and is supported on the outer circumference of the pulley, and one end is pulled out from the pulley to the side. And pulled out from the opening of the support column
A chain the other end is fixed in a state is arranged to be pulled down downwardly from pulley that is, the part of a chain that has been pulled down from the pulley below the sheave center
The line is below the outer surface of the pulley on the side opposite to the opening
A guide portion that guides the position of the chain so that the chain is disposed closer to the opening than the tangent line drawn down vertically, so that the amount of the chain wound around the pulley is improved, and the chain is stably moved by the pulley. The chain can be hung and supported, and the swinging of the chain below the pulley can be prevented, and the chain can be prevented from coming off the pulley and the pulley from running idle.

[0053] The vertical guide groove along the shape of the chain is pulled down toward the or slipping wheel downwardly, to form the side surfaces of the guide portions, the chain which is disposed below the pulley torsion Ya By preventing torsion, twisting and twisting of the chain supported on the pulley can be prevented, and the chain can be prevented from coming off the pulley and the pulley from idling.

[0054]

According to a second aspect of the present invention, in addition to the configuration of the first aspect, a latch attached via a resilient body to a tip of a chain pulled down from the pulley. A plate, a lock portion for locking the upward movement of the lock plate by contacting the upper surface of the lock plate, and a push button by the lock plate in a state where the lock plate is locked to the lock portion. The pulley is provided with a limit switch that is pressed, and a motor that rotates the pulley and stops the rotation when the push button of the limit switch is pressed to operate the limit switch. The motor that drives the pulley by operating the limit switch when the locking plate moves upward when the locking plate is moved in the direction in which the locking plate is brought into contact with the locking portion. Stop And the chain can be automatically stopped, and the motor is completely stopped and the rotation of the pulley is stopped from the time when the locking plate comes into contact with the locking portion and is locked. Even if there is a time lag before, the rotation of the pulley during this time is absorbed by the expansion of the elastic body, and excessive tension is applied to the chain between the pulley and the locking plate by the motor lock, It is possible to prevent an excessive load from being applied to the locking projections and the like on the outer periphery of the device.

[0056]

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of the present invention,
(A) is a partial front sectional view, and (b) is a partial side view.

2A is a sectional view taken along line AA of FIG. 1B, FIG. 2B is a sectional view taken along line BB of FIG. 1B, and FIG.
It is C sectional drawing.

3 (a) is a front view, FIG. 3 (b) is a side view, and FIG. 3 (c) is a rear view.

FIG. 4 is a perspective view of FIG. 3;

FIG. 5 shows still another part of the above, and (a)
Is a perspective view, and (b) is a plan view showing the operation.

FIG. 6 is a perspective view showing still another part of the above.

FIG. 7 is a front view of FIG. 6;

FIGS. 8A and 8B show an example of the entire configuration of the embodiment of the present invention, in which FIG. 8A is a schematic cross-sectional view, and FIG.
It is sectional drawing which shows other operation | movement.

FIG. 9 shows an example of the entire configuration of a conventional technique;
(A) is a schematic cross-sectional view, and (b) is a cross-sectional view showing another operation of (a).

FIGS. 10A to 10C are partial front views showing the operation of the above-described conventional technology.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 3 Chain 4 Guide part 5 Pulley 7 Lock plate 13 Limit switch 18 Guide groove 20 Push button 24 Cushion material 29 Rotation axis 30 Guide plate

Continuation of the front page (72) Inventor Takeshi Neko 5-4-66 Shioe, Amagasaki City, Hyogo Prefecture Inside Hirao Electronics Co., Ltd. (56) References JP-A-10-273904 (JP, A) 108146 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) E01F 13/00

Claims (2)

(57) [Claims] A pulley rotatably driven inside a column, and supported on the outer periphery of the pulley, one end of which is pulled laterally from the pulley and pulled out from an opening of the column to the outside.
A chain disposed to the other end is fixed in a state is pulled down downwardly from sheaves which, a part of the center line <br/> chain which is pulled down from the pulley below the pulleys, From the outer surface of the pulley on the side opposite to the opening
A guide portion for guiding the arrangement position of the chain so as to be located closer to the opening than the tangent line drawn vertically, and the shape of the chain pulled down from the pulley.
Guide grooves in the vertical direction along the shape
A chain gate characterized by being formed . 2. A chain pulled down from a pulley.
Locking plate attached to the tip of the chain via an elastic body
And the upward movement of the locking plate.
The locking part that comes into contact with and locks, and the locking plate
Push button by locking plate in locked state
Is pressed and the pulley is driven to rotate.
As soon as the limit switch push button is pressed
When the limit switch is activated, its rotary drive is stopped.
2. A motor comprising :
The chain gate as described in.