JP2009249101A - Driving force transmission device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure obtaining the power of a handrail driving device from a step chain towing steps, which can be disposed in an escalator truss even if the chain pitch length of the step chain is extended to a distance between pitches coupling the steps. <P>SOLUTION: The driving force transmission device comprises a plurality of sprockets engaged with the step chain, a synchronously driving means driving the plurality of the sprockets in the same phase, and a power transmitting means transmitting power for feeding a handrail. Driving force from the step chain is transmitted to the handrail driving device. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a driving force transmission device that transmits power to a handrail driving device in a transport device such as an escalator.

  In a conventional driving force transmission device that transmits power to a handrail drive device such as an escalator, a step chain that pulls the step is circulated by a sprocket provided on the upper portion, and is separately provided so as to mesh with the circulating step chain. The power transmission structure is simplified by transmitting driving force from the sprocket (Patent Document 1).

  In a driving force transmission device that transmits power to another conventional escalator handrail drive device, the number of teeth is an odd multiple of the number of step chains corresponding to one step, and the teeth at the position corresponding to the step axis are notched. By adopting a sprocket shape that meshes with both the forward and return step chains, power can be obtained even if there is a tooth notch at a position corresponding to the step axis (Patent Document 2).

JP-A-7-101657 (4 pages, FIG. 1) JP 2000-86135 (7 pages, FIG. 1)

  In these driving force transmission devices, if the step chain pitch length and the pitch circumferential length between the teeth of the sprocket that transmits power to the handrail driving device are not equal, the meshing rate of 1 or more cannot be secured, and the step The sprocket that transmits power to the chain and the handrail drive device is not engaged, and power cannot be transmitted to the handrail drive device.

For this reason, the step chain pitch length is determined, and the diameter of the sprocket that transmits power to the handrail drive device is automatically determined from the number of sprocket teeth that can be realized, but depending on the step chain pitch length, There is a problem that the diameter of the sprocket that transmits power becomes large and cannot be placed in the current escalator truss.

  In order to solve the above-described problems, the present invention can be arranged in an existing escalator truss without increasing the diameter of the sprocket that transmits power to the handrail drive device regardless of the step chain pitch length. The object is to obtain a driving force transmission device.

A driving force transmission device according to the present invention includes a driving roller, a pressure roller, a spring that generates pressure, and a step chain that pulls a step. The handrail is clamped between the driving roller and the pressure roller. In an escalator having a handrail drive device to drive,
A plurality of sprockets meshing with the step chain;
Synchronous driving means for driving the plurality of sprockets in the same phase;
Power transmission means for transmitting power for sending out the handrail,
The driving force from the step chain is transmitted to the handrail driving device.

  According to the present invention, a plurality of sprockets that transmit power to the handrail drive device are driven in the same phase, so that the sprocket drive can be arranged in the current escalator truss without increasing the sprocket diameter. A driving force transmission mechanism that transmits force can be obtained.

Embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a right side view showing a driving force transmission apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a front view. A plurality of sprockets 3 that transmit power to the handrail drive device are provided so as to mesh with the step chain 2 that pulls the step, and each of the sprockets 3 is provided with a pulley 4 that rotates in the same phase. The pulley 14 is configured by the timing belt 6 so that each pulley 4 operates in the same phase. At this time, the idler 5 is provided to ensure the winding angle of the timing belt 6 around the pulley 4. Here, the pulley 4, the pulley 14, the timing belt 6, and the idler 5 constitute synchronous driving means.

A separate pulley 10 is provided on one of the sprockets that transmits power to the handrail drive device, and the pulley 8 attached to each drive roller 9 and the timing belt 7 connect the pulley 10 to each pulley 8. Power is transmitted. Here, the pulley 8, the timing belt 7 and the pulley 10 constitute a power transmission means. Further, each driving roller 9 is provided with a pair of pressure rollers 12, and each pressure roller 12 is pressed against the driving roller side by a spring 13, whereby each driving roller 9 and pressure roller 12 are pressed. The handrail 1 is sandwiched between the two.

  According to such a configuration, the power is transmitted to the drive roller 9 via the timing belt 6 and the timing belt 7 by meshing the sprocket 3 that transmits a certain power with the step chain 2.

Since the sprocket 3 other than the sprocket 3a that transmits power to the handrail drive device currently engaged with the step chain 2 is also rotated in the same phase by the timing belt 6, the step chain 2 moves in the direction of arrow A in FIG. In this case, it is possible to continuously transmit power to the handrail drive device by meshing with the step chain 2 in the order of the sprocket 3b, the sprocket 3c, and the sprocket 3d after the currently meshed sprocket 3a.

With this configuration, even when the chain pitch length L of the step chain 2 is extended to, for example, the distance between the pitches of the steps, the diameter of the sprocket 3 that transmits power to the handrail drive device is set to the depth F of the escalator truss structure (see FIG. 11), a meshing rate of 1 or more can be ensured, and power can be transmitted to the handrail drive device. The driving force transmission device that transmits the driving force to the other handrail driving device also transmits power from the step chain 2 to the handrail driving device with the same configuration as the other.

  Furthermore, since the driving force transmission device that transmits the driving force to the handrail drive device of the current escalator transmits power by the chain from the sprocket for handrail drive attached to the sprocket that circulates the upper step chain, It was necessary to secure a space for the chain to pass through, and the structure inside the escalator truss was complicated.

However, as shown in FIG. 11, by adopting a system in which power is transmitted from the step chain 104 by the power take-off mechanism 102, chain transmission from the upper part becomes unnecessary, and the internal structure of the escalator truss 103 can be simplified. Become. And even if the floor height of the escalator becomes high, as shown in FIG. 12, since the step chain 2 circulates inside the escalator, a plurality of driving force transmission devices of the present invention can be installed at any place inside the escalator. Installation becomes possible, and the design freedom of the escalator is greatly improved.

  The pulley 4 and the timing belt 6, and the pulley 8, the pulley 10, and the timing belt 7 may be a combination of a sprocket and a chain. The timing belt 6 and the timing belt 7 may be V belts. Further, the timing belt 6 and the timing belt 7 may be configured as double-edged belts and the idler 5 as a pulley.

Embodiment 2. FIG.
3 is a right side view showing a driving force transmission device according to Embodiment 2 of the present invention, FIG. 4 is a left side view, and FIG. 5 is a front view. A plurality of sprockets 3 that transmit power to the handrail drive device are provided so as to mesh with the step chain 2 that pulls the step, and each of the sprockets 3 is provided with a pulley 4 that rotates in the same phase. The pulley 14 is configured by the timing belt 6 so that each pulley 4 operates in the same phase. At this time, the idler 5 is provided to ensure the winding angle of the timing belt 6 around the pulley 4. Here, the pulley 4, the pulley 14, the timing belt 6, and the idler 5 constitute synchronous driving means.

A separate pulley 10 is provided on one of the sprockets that transmits power to the handrail drive device, and the pulley 8 attached to each drive roller 9 and the timing belt 7 connect the pulley 10 to each pulley 8. Power is transmitted. Here, the pulley 8, the timing belt 7 and the pulley 10 constitute a power transmission means. Each drive roller 9 is provided with a pair of pressure rollers 12, and each pressure roller 12 is pressed against the drive roller side by a spring 13, whereby each drive roller 9 and the pressure roller 12. The handrail 1 is sandwiched between the two.

  According to such a configuration, the power is transmitted to the driving roller 9 via the timing belt 6 and the timing belt 7 by the sprocket 3 that transmits the power to the step chain 2 and one handrail driving device. Since the sprocket 3 other than the sprocket 3a that transmits power to the handrail drive device currently engaged with the step chain 2 is also rotated in the same phase by the timing belt 6, the step chain 2 moves in the direction of arrow A in FIG. In this case, the power can be continuously transmitted to the handrail drive device by meshing with the step chain 2 in the order of the sprocket 3b, the sprocket 3c and the sprocket 3d next to the sprocket 3a currently meshed.

With this configuration, even when the chain pitch length L of the step chain 2 is extended to, for example, the distance between the pitches of the steps, the diameter of the sprocket 3 that transmits power to the handrail drive device is set to the depth F of the escalator truss structure (see FIG. 11), a meshing rate of 1 or more can be secured, and power can be transmitted to the handrail drive device. Then, the other handrail drive device transmits the power to the other handrail drive device by connecting the pulley 10 of one handrail drive device and the pulley 10 of the other handrail drive device by a shaft 11.

  Furthermore, since the driving force transmission device that transmits the driving force to the handrail drive device of the current escalator transmits power by the chain from the sprocket for handrail drive attached to the sprocket that circulates the upper step chain, It was necessary to secure a space for the chain to pass through, and the structure inside the escalator truss was complicated.

However, as shown in FIG. 11, by adopting a system in which power is transmitted from the step chain 104 by the power take-off mechanism 102, chain transmission from the upper part becomes unnecessary, and the internal structure of the escalator truss 103 can be simplified. Become. And even if the floor height of the escalator becomes high, as shown in FIG. 12, since the step chain 2 circulates inside the escalator, a plurality of driving force transmission devices of the present invention can be installed at any place inside the escalator. Installation becomes possible, and the design freedom of the escalator is greatly improved. Further, according to this embodiment, the power take-off mechanism 102 of the present invention can be configured at low cost.

  The pulley 4 and the timing belt 6, and the pulley 8, the pulley 10, and the timing belt 7 may be a combination of a sprocket and a chain. The timing belt 6 and the timing belt 7 may be V belts. Further, the timing belt 6 and the timing belt 7 may be configured as double-edged belts and the idler 5 as a pulley.

Embodiment 3 FIG.
6 is a right side view showing a driving force transmission device according to Embodiment 3 of the present invention, FIG. 7 is a left side view, and FIG. 8 is a front view. A plurality of sprockets 3 that transmit the power of the driving force transmission device are provided so as to mesh with the step chain 2 that is pulling the step, and each of the sprockets 3 is provided with a pulley 4 that rotates in the same phase. The pulley 14 is configured by the timing belt 6 so that each pulley 4 operates in the same phase. At this time, the idler 5 is provided to ensure the winding angle of the timing belt 6 around the pulley 4. Here, the pulley 4, the pulley 14, the timing belt 6, and the idler 5 constitute synchronous driving means.

The step chain 2 that pulls the step is one on each of the left and right sides, and the pulley 14 composed of the left step chain 2 and the pulley 14 composed of the right step chain 2 are connected by a shaft 11. , Is designed to operate in the same phase.

In addition, one pulley having a sprocket that transmits power to the handrail drive device is provided with a separate pulley 10, and a pulley 8 attached to each drive roller 9 and a timing belt 7 drive power from the pulley 10 to each pulley 8. Is transmitted. Here, the pulley 8, the timing belt 7 and the pulley 10 constitute a power transmission means. Further, each driving roller 9 is provided with a pair of pressure rollers 12, and each pressure roller 12 is pressed against the driving roller side by a spring 13, whereby each driving roller 9 and the pressure roller 12. The handrail 1 is sandwiched between the two.

  According to such a configuration, the power is transmitted to the driving roller 9 via the timing belt 6 and the timing belt 7 by meshing the step chain 2 with a certain sprocket 3.

Since the sprocket 3 other than the sprocket 3a currently engaged with the step chain 2 also rotates in the same phase by the timing belt 6 and the shaft 11, the step chain 2 moves in the direction of arrow A in FIG. 3 and FIG. At this time, it is possible to continuously transmit power to the handrail drive device by meshing with the step chain 2 in the order of the sprocket 3b, the sprocket 3c, and the sprocket 3d next to the currently engaged sprocket 3a.

With this configuration, even when the chain pitch length L of the step chain 2 is extended to, for example, the distance between the pitches of the steps, the diameter of the sprocket 3 that transmits power to the handrail drive device is set to the depth F of the escalator structure (FIG. 11). The meshing rate 1 can be ensured without making it larger than (see), and power can be transmitted to the handrail drive device.

  Furthermore, the current escalator drive force transmission device transmits power through a chain from a handrail drive sprocket attached to the sprocket that circulates the upper step chain, so it is necessary to secure a space for the chain to pass through. The structure in the escalator truss was complicated.

However, as shown in FIG. 11, by adopting a system in which power is transmitted from the step chain 104 by the power take-off mechanism 102, chain transmission from the upper part becomes unnecessary, and the internal structure of the escalator truss 103 can be simplified. Become. And even if the floor height of the escalator becomes high, as shown in FIG. 12, since the step chain 2 circulates inside the escalator, a plurality of driving force transmission devices of the present invention can be installed at any place inside the escalator. Installation becomes possible, and the design freedom of the escalator is greatly improved. In addition, according to the present embodiment, the power take-out mechanism 102 of the present invention can be further shortened with respect to the length direction of the escalator.

  Furthermore, the pulley 4 and the timing belt 6, and the pulley 8, the pulley 10, and the timing belt 7 may be a combination of a sprocket and a chain. The timing belt 6 and the timing belt 7 may be V belts. The timing belt 6 and the timing belt 7 may be configured as double-edged belts and the idler 5 as a pulley.

Embodiment 4 FIG.
9 is a right side view showing a driving force transmission apparatus according to Embodiment 2 of the present invention, and FIG. 10 is a front view. A plurality of sprockets 3 having different specifications for the number of teeth and diameter for transmitting power to the driving force transmission device so as to mesh with the step chain 2 pulling the step are provided, and each sprocket 3 has a pulley 4 that rotates in the same phase. Are attached, and each pulley 4 and pulley 14 are configured by the timing belt 6 so that each pulley 4 operates in the same phase.

At this time, the idler 5 is provided to ensure the winding angle of the timing belt 6 around the pulley 4. Here, the pulley 4, the pulley 14, the timing belt 6, and the idler 5 constitute synchronous driving means. A separate pulley 10 is provided on one of the sprockets that transmits power to the handrail drive device, and the pulley 8 attached to each drive roller 9 and the timing belt 7 connect the pulley 10 to each pulley 8. Power is transmitted. Here, the pulley 8, the timing belt 7 and the pulley 10 constitute a power transmission means.

Further, each driving roller 9 is provided with a pair of pressure rollers 12, and each pressure roller 12 is pressed against the driving roller side by a spring 13, whereby each driving roller 9 and pressure roller 12 are pressed. The handrail 1 is sandwiched between the two.

  According to such a configuration, the power is transmitted to the driving roller 9 via the timing belt 6 and the timing belt 7 by meshing the step chain 2 with a certain sprocket 3.

Since the sprocket 3 other than the sprocket 3a that transmits power to the handrail drive device currently engaged with the step chain 2 is also rotated in the same phase by the timing belt 6, the step chain 2 moves in the direction of arrow A in FIG. In this case, it is possible to continuously transmit power to the handrail drive device by engaging the step chain 2 in the order of the sprocket 3b, the sprocket 3c, and the sprocket 3d next to the currently engaged sprocket 3a.

With this configuration, even when the chain pitch length L of the step chain 2 is extended to, for example, the distance between the pitches of the steps, the diameter of the sprocket 3 that transmits power to the handrail drive device is set to the depth F of the escalator truss structure (see FIG. 11), a meshing rate of 1 or more can be ensured, and power can be transmitted to the handrail drive device.

  Furthermore, the current escalator drive force transmission device transmits power through a chain from a handrail drive sprocket attached to the sprocket that circulates the upper step chain, so it is necessary to secure a space for the chain to pass through. The structure in the escalator truss was complicated.

However, as shown in FIG. 11, by adopting a system in which power is transmitted from the step chain 104 by the power take-off mechanism 102, chain transmission from the upper part becomes unnecessary, and the internal structure of the escalator truss 103 can be simplified. Become. And even if the floor height of the escalator becomes high, as shown in FIG. 12, since the step chain 2 circulates inside the escalator, a plurality of driving force transmission devices of the present invention can be installed at any place inside the escalator. Installation becomes possible, and the design freedom of the escalator is greatly improved. Further, according to the present embodiment, it is possible to further improve the degree of freedom in arrangement of the power take-out mechanism 102 of the present invention in the escalator truss 103.

The pulley 4 and the timing belt 6, and the pulley 8, the pulley 10, and the timing belt 7 may be a combination of a sprocket and a chain. The timing belt 6 and the timing belt 7 may be V belts. The timing belt 6 and the timing belt 7 may be configured as double-edged belts and the idler 5 as a pulley.
In all of the embodiments described above, the example in the escalator has been described. However, the present invention is not limited to this, and in a transport device that transports a person, an object, etc., by moving a step in a planar shape instead of a step shape Needless to say, this is applicable.

It is a right view which shows the driving force transmission apparatus by Embodiment 1 of this invention. It is a front view which shows the driving force transmission apparatus by Embodiment 1 of this invention. It is a right view which shows the driving force transmission apparatus by Embodiment 2 of this invention. It is a left view which shows the driving force transmission apparatus by Embodiment 2 of this invention. It is a front view which shows the driving force transmission apparatus by Embodiment 2 of this invention. It is a right view which shows a driving force transmission apparatus by Embodiment 3 of this invention. It is a left view which shows a driving force transmission device by Embodiment 3 of this invention. It is a front view which shows the driving force transmission apparatus by Embodiment 3 of this invention. It is a right view which shows a driving force transmission device by Embodiment 4 of this invention. It is a front view which shows the driving force transmission apparatus by Embodiment 4 of this invention. It is a side view which shows arrangement | positioning in the escalator truss by the driving force transmission apparatus by this invention. It is a side view showing a plurality of units in an escalator truss by a driving force transmission device according to the present invention.

Explanation of symbols

  1 handrail, 2 step chain, 3 sprocket, 4 pulley, 5 idler, 6 timing belt, 7 timing belt, 8 pulley, 9 drive roller, 10 pulley, 11 shaft, 12 pressure roller, 13 spring, 14 pulley, 15 step , 100 handrail drive device, 101 sprocket, 102 power take-off mechanism, 103 escalator truss, 104 step chain, 105 handrail, 106 steps.

Claims (4)

In an escalator comprising a drive roller, a pressure roller, a spring that generates pressure, a step chain that pulls the step, and having a handrail drive device that drives a handrail by clamping between the drive roller and the pressure roller,
A plurality of sprockets meshing with the step chain;
Synchronous driving means for driving the plurality of sprockets in the same phase;
Power transmission means for transmitting power for sending out the handrail,
A driving force transmission device that transmits a driving force from the step chain to a handrail driving device. In an escalator comprising a drive roller, a pressure roller, a spring that generates pressure, a step chain that pulls the step, and having a handrail drive device that drives a handrail by clamping between the drive roller and the pressure roller,
A plurality of sprockets meshing with the step chain;
Synchronous driving means for driving the plurality of sprockets in the same phase;
Power transmission means for transmitting power for sending out the handrail,
The sprocket, the synchronous drive means, and the power transmission means are arranged in one handrail drive device and are connected by a connecting shaft that drives the handrail drive device and the other handrail drive device in the same phase. Driving force transmission device. In an escalator comprising a drive roller, a pressure roller, a spring that generates pressure, a step chain that pulls the step, and having a handrail drive device that drives a handrail by clamping between the drive roller and the pressure roller,
A plurality of sprockets meshing with the step chain;
Driving force generating means for generating a driving force from the step chain by providing the sprocket on one of the step chains and the other step chain and connecting both sprockets with a connecting shaft that drives them in the same phase. A driving force transmission device comprising: The driving force transmission device according to any one of claims 1 to 3, wherein the sprocket is configured by a combination of sprockets having different numbers of teeth or diameters.

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