JP2002192992A - Noncontact power feed system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a noncontact power feed system having constitution capable of always feeding power without making a power feed line detour far apart from a rail 2 in the position where a door body 4 crosses to the rail 2 which is a transfer passage. SOLUTION: A connecting terminal 10 installed in an end part of one power feed line 5a is separated from a terminal board 11 installed in an end part of the other power feed line 5b in a part corresponding to a movable part 2a of the rail 2. Thereby, a power feed line 5a can be separated from the power feed line 5b, and a housing part 28 is formed in the position adjoined with a groove 13 of the terminal board 11 to house an electromagnetic pin acting as a switching means. When the door body 4 is opened or closed, the power feed lines 5a, 5b move between an opening position B allowing the closing operation of the door body 4 and a closing position A acting as the transfer passage, in according with the rotation (movement) of the movable part 2a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a power supply line in a non-contact power supply system for supplying power to a transfer device or the like traveling in a clean room of a factory by using electromagnetic induction.

[0002]

2. Description of the Related Art Conventionally, as a transfer apparatus using a non-contact power supply system, for example, Japanese Patent Laid-Open No. 11-291796 is known. As shown in FIG. 7, the non-contact power supply wires 31
A power supply line (hereinafter referred to as a power supply line) is provided by an electric wire hanger 34, and an alternating current is supplied to the power supply line 31. The power supply line 31 is used as the primary side, and the secondary coil 33 of the current collecting core portion 32 of the transporter (not shown) traveling in a suspended state along the traveling rail 30 is used as the secondary side to supply power using electromagnetic induction. The transporting machine is driven by driving a traveling motor or the like with the supplied power.

The transport path formed by the traveling rail 30 may be laid, for example, over a plurality of rooms defined by walls to prevent the spread of fire in the event of a fire or the like, or to purify the air. There are places where the transport path needs to be closed by a door body for maintenance of the degree.

In such a place, it is necessary to configure the traveling rail and the power supply line to allow the door to close.

Conventionally, in order to allow the closing operation of the door body,
For example, the configuration is such that the traveling rail moves to a position that allows the door body to close, but the power supply line passes through another path away from the traveling rail and bypassing the door. Specifically, a closing operation of the door body can be permitted by providing a gap in an upper or lower wall or floor of the door body and passing a power supply line.

[0006]

However, in a configuration in which the power supply line is detoured away from the transport path, it is no longer possible to supply power to the current collecting core of the transporter from the power supply line in the detour portion, so that the traveling of the transporter becomes inert. SUMMARY OF THE INVENTION It is an object of the present invention to provide a non-contact power supply system that can always supply power without bypassing the power supply line in such a case.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, the connection of the power supply line is cut off at a predetermined position by the switching means as the movable portion of the transport path moves to the open position. The feeder line moves,
The gist is that the power supply line returns and moves and the connection is secured by the switching means in accordance with the return movement of the movable portion to the closed position.

According to a second aspect of the present invention, in the first aspect of the present invention, the switching means includes a pin provided with an urging means in an axial direction and having an ON position and an OFF position; A coil having both ends connected to a power supply, and a yoke provided so as to protrudely cover the coil and the biasing means so as to protrude the pin and separable in the axial direction of the pin. Is the gist.

According to a third aspect of the present invention, in the second aspect of the present invention, a terminal block for accommodating the switching means is provided at an end of one of the feeder lines to be cut, and at an end of the other feeder line. Is provided with a connection terminal with a hole,
The gist is that the pin is inserted into the hole and arranged at the ON position.

[0010] In the invention of claim 4, claims 1 to 3 are provided.
In the invention according to any one of the above, the movement of the movable unit is performed after power supply to the power supply line is cut off, and the return movement of the movable unit is performed before the power supply line is energized. The gist is to be

According to the invention, when the transport path is required to be moved in an emergency or the like, the movable portion forming a part of the transport path is moved from the closed position to the open position. And the power supply line also moves so as to follow this movement. Further, when a return movement of the transport path is requested due to an emergency release or the like, the movable part returns from the open position to the closed position, and the power supply line also moves so as to follow this movement. Therefore, the power supply line moves with the movement of the transport path without leaving the transport path, and thus power can be constantly supplied from the power supply line to the moving body.

According to the second aspect of the present invention, when a current is supplied to the coil, a force is applied to both yokes in a direction in which they are attracted to each other, and the pins protrude from the yokes (ON positions of the pins). Conversely, when the current supply to the coil is stopped, a force acts on the yoke in a direction away from each other, and the pin is immersed in the yoke.

According to the third aspect of the present invention, when the pins constituting the switching means accommodated in the terminal block are arranged at the ON position through the holes formed in the connection terminal, the connection terminal is not connected to the terminal block. Fixed against. Therefore, the connection terminal is prevented from coming off from the terminal block due to vibration or the like, and the connection between the terminal block and the connection terminal is ensured.

According to the fourth aspect of the present invention, disconnection, movement, and connection of the power supply line are performed while the power supply to the power supply line is cut off.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) An embodiment in which the present invention is embodied in a transporter used in a clean room will be described below with reference to FIGS.

As shown in FIG. 1, the non-contact power supply system supplies electric power in a non-contact manner when a transporter 1 as a moving body travels on a rail 2 as a transport path laid on the floor. It is constituted by that. The rail 2 is laid over two rooms separated by a wall 3 extending in a direction perpendicular to the rail 2. The portion of the wall 3 through which the conveyor 1 passes and the portion of the wall 3 where the rails 2 are laid can be closed by a door 4 provided on the wall 3. The door body 4 is movable with respect to the wall 3 by a slide mechanism (not shown) by an actuator (not shown). The traveling direction of the transporter 1 is the direction of arrow X in the figure.

A movable portion 2a is provided at a position corresponding to the wall 3 of the rail 2, and the movable portion 2a is in a normal closing position A (a position where the movable portion 2a is closed and is established as the rail 2).
And an open position B at the time of emergency, that is, when the movable portion 2a allows the door body 4 to be closed. The movable portion 2a is rotatable about a shaft 2b, and its rotation (movement) is performed by an actuator (not shown).

As shown in FIG. 2, wire hangers 6 are provided at predetermined intervals on the right side surface (upper side in FIG. 1) of the rail 2 along the traveling direction X of the transporter. Each of the wire hangers 6 is provided with support portions 6a at two upper and lower positions in the height direction so as to extend to the right of the rail 2 respectively. A power supply line 5 (shown as power supply lines 5a and 5b in the drawings) as a primary side of the non-contact power supply system of the present embodiment is provided at the tip of the support portion 6a. The power supply lines 5 are connected to an alternating current and have a hoop shape, and the power supply lines 5 in the upper and lower rows in FIG.

When power is supplied to the feeder 5 serving as a primary side, the transporter 1 traveling on the rail 2 receives the feeder 5.
A current collecting core portion 7 as a secondary side for collecting power from the vehicle in a non-contact manner is provided on the right side surface (upper side in FIG. 1) in the traveling direction X of the body. Two concave portions 7 a, 7 a corresponding to the power supply line 5 are formed in the current collecting core portion 7, and the opening side of each concave portion 7 a is directed to the rail 2. A projecting portion 7b at the center of the current collecting core portion 7 toward the electric wire hanger 6 is formed in a substantially cylindrical shape, and a secondary coil 8 is wound around the outer periphery thereof. The secondary coil 8 and the power supply line 5 are arranged so as to be in non-contact with each other. When power is supplied to the power supply line 5, an induced electromotive force is generated in the secondary coil 8. The carrier 1 travels by driving a drive motor (not shown) mounted on the carrier 1 by the induced electromotive force. The conveyor 1 is provided with a guide (not shown) at a predetermined position, and is guided along the rail 2 by the guide.

As shown in FIG. 3, the movable portion 2a of the feeder line 5
And a connection terminal 10 having a pin hole 12 formed at the tip end thereof and a terminal block 1.
1 is disconnected, so that the feeder 5a and the feeder 5b
And can be separated. The connection terminal 10 is provided at an end of one power supply line 5a, and the terminal block 11 is provided at an end of the other power supply line 5b. (It should be noted that the terminal block 11 also has the same configuration on the upper side and the lower side corresponding to the fact that the power supply lines are provided in two rows in the upper and lower directions. The upper and lower sides of the terminal block are electrically disconnected. However, the upper and lower joining portions are recessed so as not to hinder the traveling of the transporter 1 (to hinder passage of the current collecting core 7). , The terminal block 11 is provided with
Although described relatively large as compared with the size of b, the size is actually formed so as not to hinder the traveling of the transporter 1. The terminal block 11 is fixed to a rail, and a groove 13 is formed on a side of the terminal block 11 facing the current collecting core 7 on the side of the power supply line 5a. It has become. The surface of the groove 13 is covered with a conductor. Therefore, when the connection terminal 10 and the terminal block 11 come into contact (fit), the power supply line 5a and the power supply line 5b
Is secured. The groove 13 of the terminal block 11
A storage portion 28 is formed at a position adjacent to the electromagnetic pin 14 so that the electromagnetic pin 14 is stored therein.

As shown in FIG. 4, an electromagnetic pin 14 as a switching means is a rod-shaped pin 17 made of a magnetic material, and is wound around the pin 17 and both ends thereof are connected to an alternating current 19. The coil 18 includes a pair of yokes 15 a and 15 b provided so as to cover the coil 18 and separable in the axial direction of the pin 17, and a spring 16 as urging means for the pin in the axial direction.
The pair of yokes 15a and 15b are made of a magnetic material, and are formed in the same shape and with a bottomed cylinder. The yokes 15a and 15b are accommodated in the accommodating portion 28 such that the yokes 15a and 15b can be separated in a direction orthogonal to the power supply line 5 and their openings face each other. It goes without saying that the total length of the yokes 15a and 15b in the axial direction when separated is smaller than the length of the storage section 28 in the direction orthogonal to the power supply line 5.

The bottom of one yoke 15a is
Is fixed to the surface of the groove 13 side of the
A hole 15c is formed in which the tip of the head can protrude and retract. The other yoke 15b is movable in its axial direction, and its movement is regulated by its bottom contacting the storage portion. The base end of the pin 17 is fixed to the bottom of the yoke 15b. Further, a spring 16, which is a means for urging the pin 17 in the axially immersive direction, is interposed on the inner peripheral side of both yokes 15a and 15b so as to wind the pin 17.

The inner diameter of the pin hole 12 is larger than the outer diameter of the pin 17. When the pin 17 projects from the hole 15c of the yoke 15a and is inserted into the pin hole 12 of the connection terminal 10,
The connection terminal 10 and the terminal block 11 are locked.

When the electromagnetic pin 14 is turned on, that is, when power is supplied from the AC power supply 19 to the coil 18 and the coil 18 is excited, strong magnetic force is generated in both yokes 15a and 15b, and both yokes 15a and 15b are turned on. The yokes 15b are attracted to each other by this magnetic force, and the yokes 15b are moved and joined. At this time, the tip of the pin 17 constituting the electromagnetic pin 14 is
5a, the pin hole 12 of the connection terminal 10 is inserted through
The electromagnetic pin 14 is in the ON position. When the coil 18 is demagnetized, the yoke 15 b of the two yokes 15 a and 15 b joined to each other
5a. At this time, the pin 17
The tip of the pin sinks into the yoke 15a and the electromagnetic pin 14 is turned off.
Position. That is, the electromagnetic pin 14 is arranged at the ON position when a coil constituting a part thereof is excited, and is arranged at the OFF position when the coil is demagnetized.

Next, the operation of the non-contact power supply system configured as described above will be described.

First, when the door 4 is closed in an emergency, the power supply to the power supply lines 5a and 5b is cut off. When the power supply from the power supply 19 to the electromagnetic pin 14 is cut off and the coil 18 is demagnetized, the electromagnetic pin 14 is placed in the OFF position. That is, the yokes 15a and 15b are separated from each other, and the pin 17 comes out of the pin hole 12 of the connection terminal 10, and the hole 15c
Immerse yourself in. Thereby, the connection terminal 10 is connected to the terminal block 11.
The connection terminals 10 are detached from the grooves 13 by an actuator (not shown), the connection of the power supply lines 5a and 5b is cut, and the electrical connection is also cut off. Further, with the rotation (movement) of the movable portion 2a, the power supply line 5a is moved to the open position B allowing the closing operation of the door body 4.
Go to

Conversely, when the door 4 is opened, the feeder line 5a returns to the closed position A with the rotation (movement) of the movable portion 2a. Further, the connection terminal 10 is fitted into the groove 13, and the power supply lines 5a and 5b are connected. At this time, the electrical connection of the power supply lines 5a and 5b is secured by the contact between the connection terminal 10 and the groove 13. Power supply 19 for electromagnetic pin 14
When energization is further performed and the coil 18 is excited, the electromagnetic pin 14 is located at the ON position. That is, both yokes 15a,
The connection terminals 10 are locked in the grooves 13 by connecting the pins 17 with the ends of the pins 17 protruding from the holes 15 c and being inserted into the pin holes 12 of the connection terminals 10. Power supply line 5
The energization to a and 5b is restarted.

(Effects) This embodiment has the following effects. (1) Since the power supply line 5a moves following the movement of the rail 2, it is not necessary to detour the power supply line 5a at the installation location of the door 4, and the power supply line 5a can always be installed along the rail 2. Become. Accordingly, power can be constantly supplied from the power supply lines 5a and 5b to the current collecting core unit 7. (2) After the power supply lines 5a and 5b are connected,
7 is inserted into the pin hole 12 so that the connection state between the connection terminal 10 and the terminal block 11 is locked by the pin 17,
The connection terminal 10 can be prevented from coming off the terminal block 11 due to vibration or the like.

Further, since the inner diameter of the pin hole 12 is larger than the outer diameter of the pin 17, the joining state between the connection terminal 10 and the terminal block 11 is locked even if the accuracy of the pin mounting is somewhat poor. You. (3) Since the power supply lines 5a and 5b can be disconnected and connected by remote control by using the electromagnetic pins 14, it is suitable for installation in a place such as a clean room where entry of persons is restricted. (4) By following the procedure described in the operation, the connection and disconnection of the power supply line are always performed in a state where the power supply to the power supply line is cut off, thereby preventing the occurrence of an unexpected event. Then, stable operation of the system becomes possible.

(Embodiment 2) In Embodiment 1, the pins of the electromagnetic pins are formed in a rod shape having a uniform diameter and function as means for locking the connection state between the connection terminal and the terminal block.
In addition to this, a case where the connection terminal functions as a means for pressing the connection terminal against the terminal block will be described in this embodiment. The configuration other than the shape of the electromagnetic pin is the same as that of the first embodiment, and a description thereof will be omitted.

As shown in FIG. 5, the pin 20 of the electromagnetic pin 24 has a large-diameter portion 21 and a small-diameter portion 22, and when power is supplied to the electromagnetic pin 24 from a power source, the electromagnetic pin is turned to the ON position. Placed, i.e., coil 18 is energized and pin 2
0 is inserted into the pin hole 12 of the connection terminal 10, and the large-diameter portion 21 is used to connect one side surface 10 a of the connection terminal 10.
Is pressed. Thereby, the other side surface 10 of the connection terminal 10
b reliably and stably contacts the side surface formed by the conductor of the groove 13, and the electrical connection between the power supply line 5a on the connection terminal 10 side and the power supply line 5b on the terminal block 11 side is reliably ensured. .

On the other hand, when the power supply to the electromagnetic pin 24 from the power supply is cut off, the electromagnetic pin is placed in the OFF position. That is, the coil 18 is demagnetized, the small-diameter portion 22 of the pin 20 of the electromagnetic pin 24 comes out of the pin hole 12, and the large-diameter portion 21 is separated from the connection terminal 10 and sinks. Thereby, the connection terminal 10
Of the terminal block 11 is released. (In some cases, the two 10 and 11 are not in contact at this time.) This allows the connection terminal 10 to move.

(Effects) The present embodiment has the following effects. (1) Since the contact between the connection terminal 10 and the terminal block 11 is ensured by the pressing by the pin 20, conduction of the power supply lines 5a and 5b can be reliably maintained. (2) Even if the width of the connection terminal 10 is not constant, if the width is smaller than the width of the groove, it is adjusted by pressing, so that the conduction state of the power supply lines 5a and 5b can be reliably maintained.

(Embodiment 3) In Embodiments 1 and 2, the connection terminal is provided with a pin hole, but this embodiment will be described in the case where the connection terminal is a pin groove.

As shown in FIG. 6, an electromagnetic pin 14 is provided on a side surface of the connection terminal 10 on the side of the opening of the groove 13 (on the front side in the drawing).
A semi-cylindrical pin groove 29 that can be locked to the pin 17 is formed. When the electromagnetic pin 14 is energized from the power supply, the electromagnetic pin 14 is located at the ON position. That is, the pin 17 is locked in the pin groove 29. Accordingly, when the connection terminal 10 tries to fall out of the groove 13 due to vibration or the like, the pin 1
7, the electrical connection between the power supply line 5a and the power supply line 5b is reliably maintained.

On the other hand, when the power supply from the electromagnetic pin 14 is cut off, the electromagnetic pin 14 is placed in the OFF position. That is, the pin 17 is separated from the pin groove 29 and enters the yoke. As a result, the connection terminal 10 becomes movable.

(Effects) The present embodiment has the following effects. (1) In the case of the pin groove 29, the operation state of the electromagnetic pin 14 can be easily confirmed from outside.

(Modification) The above embodiment can be modified as follows.

In the above embodiments, the pins are configured as the electromagnetic pins 14 and 24. However, the pins may be manually operated by an operator.

In each of the above embodiments, the electromagnetic pin 1
The spring 16, which is the urging means of 4, 24, may be made of rubber other than the spring 16, for example.

In the electromagnetic pins in the above embodiments, the pins 17, 20 and the yokes 15a, 15b are made of a magnetic material. However, it is not always necessary that both pins are made of a magnetic material. If it is a configuration, either one can be configured with a magnetic material.

In each of the above embodiments, the pin hole 12 may be replaced by a recess which does not penetrate the connection terminal.

In each of the above embodiments, the power supply line is cut off before the electromagnetic pins 14 and 24 as switching means are turned off, and the electromagnetic pins 14 and 24 are turned on.
Although the power supply to the power supply line is resumed after the power supply is performed, a state in which the power supply is always performed may be performed.

In the second embodiment, the power supply line 5a on the connection terminal 10 side and the power supply line 5b on the terminal block 11 side are electrically connected by the contact between the connection terminal 10 and the groove 13. As a conductor, a power supply line 5a on the connection terminal 10 side and a power supply line 5b on the terminal block 11 side via the electromagnetic pin 24.
Can be electrically connected.

In the second embodiment, the shape of the pin 20 is tapered. However, the shape of the pin 20 may be, for example, a step shape as long as it presses the connection terminal 10.

[0046]

According to the first aspect of the present invention, it is possible to connect and disconnect the power supply line by the switching means, and to move the power supply line, so that there is no need to bypass the power supply line and the power supply line is always supplied along the transport path. By arranging the electric wires, it is possible to realize a connection structure of a power supply line that can always supply power.

According to the second aspect of the present invention, since the power supply line can be disconnected and connected by remote control by using the electromagnetic pin, it is suitable for installation in a place such as a clean room where entry of persons is restricted. I have.

According to the third aspect of the present invention, after the power supply line is connected, the end of the pin is inserted into the pin hole to lock the connection state between the connection terminal and the terminal block by the pin (further, Therefore, the connection terminal can be prevented from coming off the terminal block due to vibration or the like.

According to the fourth aspect of the invention, the connection and disconnection of the power supply line are always performed in a state where the power supply to the power supply line is cut off, thereby preventing an unexpected situation from occurring. Prevention and stable operation of the system.

[Brief description of the drawings]

FIG. 1 is a plan view of a wireless power supply system according to a first embodiment.

FIG. 2 is a cross-sectional view of a power supply line according to the first embodiment.

FIG. 3 is a perspective view showing a main part in the first embodiment.

FIG. 4 is an enlarged sectional view of an electromagnetic pin in the first embodiment.

FIG. 5 is a front view showing a main part in a second embodiment.

FIG. 6 is a front view showing a main part in a third embodiment.

FIG. 7 is a partial cross-sectional view of a power supply line portion of a non-contact power supply system according to the related art.

[Explanation of symbols]

1. Transporter as a moving body, 2. Rail as a transport path, 3.
Wall, 4 door body, 5a, 5b power supply line, 6 wire hanger, 7 current collecting core, 8 secondary coil, 10 connection terminal, 11 terminal block, 12, 23 pin hole, 13 groove, 1
4, electromagnetic pin, 15a, 15b yoke, 16 spring,
17, 20 pin, 18 coil, electromagnetic pin, 29 pin groove, A closed position, B open position.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Katsuyuki Morita 2-1-1 Toyota-cho, Kariya-shi, Aichi F-term in Toyota Industries Corporation (reference) 3F022 AA07 BB09 JJ11 MM55

Claims (4)

[Claims] 1. A transport path having a movable section movable between a closed position and an open position; and a feeder line installed along the transport path and capable of following the movement of the movable section. A non-contact power supply system including a moving body to which energy is supplied from the power supply line in a non-contact manner, wherein the connection is performed by a switching unit at a predetermined position with the movement of the movable unit to the open position. The power supply line is moved after being cut, and the power supply line is returned and moved by the return movement of the movable portion to the closed position, and the connection is secured by the switching means. Power supply system. 2. The switching means includes a pin provided with an urging means in an axial direction and having an ON position and an OFF position; a coil wound around the pin and having both ends connected to a power supply; The non-contact power supply system according to claim 1, wherein the coil and the urging unit are provided so as to cover the pin so as to protrude therefrom, and a yoke that is separable in an axial direction of the pin. 3. A terminal block in which the switching means is accommodated is provided at an end of one power supply line to be cut, and a connection terminal having a hole is provided at an end of the other power supply line. The wireless power supply system according to claim 2, wherein the pin is disposed at an ON position through the hole. 4. The movement of the movable portion is performed after power supply to the power supply line is interrupted, and the return movement of the movable portion is performed before the power supply line is energized. Item 4. The non-contact power supply system according to any one of items 3.