JP2002178800A - Connecting structure of feeder wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting structure of feeder wires in a noncontact feeder system for absorbing dispersion of feeder wire lengths due to feeder wire manufacturing error of the modularized feeder wires 4 and allowing easy connection of many places. SOLUTION: The modularized feeder wires 4 having connecting terminals 5 at their ends are interconnected via a terminal block 7. A plurality of screw holes 8 are linearly arranged in the axial direction (wiring direction of the feeder wires) in the projecting part 7a of the terminal block 7 having U-shaped cross section, an oblong hole 6 extending in the axial direction is formed in each connecting terminal 5, and length of the oblong hole 6 is equal to the sum of a pitch of the screw holes 8 and a diameter of the screw holes 8. When the connecting terminals 5 are piled on the arranging surface of the screw holes 8 of the projecting part 7a along the axial direction, a screw 9 can be screwed through the screw hole 8 and the oblong hole 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure of a power supply line in a non-contact power supply system of an electromagnetic induction type for supplying power to a carrier or the like traveling in a clean room of a factory in a non-contact manner by utilizing electromagnetic induction. Things.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 6, a power supply line 12 in a non-contact power supply system has a power supply line 12 having a length exceeding, for example, 50 meters by a wire hanger 13 on a rail structure 10 which is a transport path. It was erected along.

However, if the length and weight of the feed line are large,
There is a problem that it is difficult to erection and work at a high place with a small number of people, and it is difficult to cope with a conveying path that curves with various curvatures.

Japanese Patent Laid-Open Publication No. Hei 6-31603 is known to improve the workability during erection. In this method, epoxy resin containing sand is poured into the recess of the bracket, and the guide line, which is the power supply line, is fixed to form a guide line cartridge of unit length, and the guide line cartridge is continuous for the required length. Just put it on the floor and the guide line will be laid.

[0005] Further, as shown in FIG.
It is conceivable to improve work efficiency by connecting power supply lines (hereinafter referred to as modular power supply lines 4) having connection terminals 5 at both ends thereof at a work site.

[0006]

However, in the modularized power supply line 4, a manufacturing error occurs about 0.5% of the total length (for example, in the case of the modularized power supply line 4 having a length of 15 meters, a length error in the axial direction is reduced). (+/- about 75 mm), which causes mounting errors during installation.)

[0007] Therefore, at the installation site, the power supply line of the modularized power supply line 4 absorbs a variation in the power supply line length due to a manufacturing error of the power supply line, and has a large number of connection points. A connection structure is desired.
Accordingly, an object of the present invention is to provide a power supply line connection structure having good erection workability in a transport system using a non-contact power supply system.

[0008]

In order to solve the above-mentioned problems, according to the first and second aspects of the present invention, there is provided a structure in which power supply lines having connection terminals at their ends are connected to each other via a terminal block. A plurality of screw holes are arranged linearly in the axial direction of the power supply line on the terminal block, while the connection terminal is formed with a long hole extending in the axial direction of the power supply line, The length of the long hole is equal to or longer than the sum of the pitch of the screw holes and the diameter of the screw holes, and the gist is that the connection terminals are attached by screws screwed into the screw holes.

According to the above structure, the power supply line can be screwed into the screw hole corresponding to the length of the power supply line, thereby making it possible to absorb a variation in the power supply line length due to a manufacturing error of the power supply line. .

Further, it is preferable that the screw holes are arranged at equal intervals.

According to the third to fifth aspects of the present invention, the power supply lines having connection terminals at the ends are connected to each other via a terminal block, and the terminal block is provided with a groove in the axial direction. A recess is provided on at least one of the opposed inner walls in the groove, while a mooring protrusion is provided at a position corresponding to the recess of the connection terminal, and the mooring protrusion is moored in the recess. The gist is that the connection is established by the connection.

According to the above structure, the connection terminal is fitted in the groove at a position corresponding to the length of the power supply line, and the mooring projection is moored in the recess. This makes it possible to absorb variations in the length of the power supply line due to manufacturing errors in the power supply line. Also, one-touch connection is made without the need for tools or the like.

Further, as in the invention of claim 4, the recess is configured to urge the connection terminal, and as in the invention of claim 5, the mooring projection is configured to be retractable. It is also possible.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS (Embodiment 1) Hereinafter, a transport system using a non-contact power supply system embodying the present invention will be described as an embodiment.

As shown in FIG. 2 which is a partial perspective view of the system, a side surface of a rail 2 which is a transport path on which a transporter 1 which is a moving body travels is disposed in a longitudinal direction of the rail 2 (a direction in which a power supply line is laid). The power supply line hangers 3 are installed at predetermined intervals. The power supply line is laid in two upper and lower stages in parallel with the power supply line hanger 3 in a reciprocating manner along the side surface of the rail 2 which is a transport path. On the rail 2, a current collecting core 5
The transport machine 1 provided with is driven while performing non-contact power supply by electromagnetic induction. Further, a rectangular parallelepiped terminal block 7 is attached to the side surface of the rail 2 where the feeder hanger 3 is installed, with the direction in which the feeder line is laid in the longitudinal direction.

As shown in FIG. 1, the power supply line is cut into a predetermined length (about 3 to 15 meters), and is configured as a modularized power supply line 4 having connection terminals 5 at both ends thereof. You. Further, each of the connection terminals 5 is formed with an elongated hole 6 extending in the axial direction (the direction in which the power supply line is laid) for screwing with the terminal block 7.

As shown in FIG. 3 which is an enlarged view of a connection portion of the modularized power supply line 4, the terminal block 7 has a U-shaped cross section.
Further, a plurality of screw holes 8 are formed in the U-shaped projecting portions 7a formed of the conductors in the upper and lower two rows (the upper and lower two rows of the projecting portions 7a are electrically insulated from each other). Are linearly arranged in the axial direction (the direction in which the power supply line is laid). The screw holes 8 are formed at regular intervals, and the length X of the long holes 6 is formed substantially equal to the sum of the screw hole pitch Y and the diameter of the screw holes 8. The screw hole 8 of the terminal block 7 and the long hole 6 of the connection terminal 5 are overlapped, and the screw 9
Is inserted into the long hole 6 and screwed into the screw hole 8, so that the connection terminal 5 and the protruding portion 7a are connected.

(Operation) With the above configuration, adjacent modularized power supply lines 4 are connected to each other via the terminal block 7. Since the length X of the long hole 6 is substantially equal to the sum of the screw hole pitch Y and the diameter of the screw hole 8, the connection terminal 5
The screw 9 can always be screwed into the screw hole 8 through the long hole 6 when it is superposed along the axial direction on the arrangement surface of the screw holes 8 of the protruding portion 7a.

(Effects) The effects of this embodiment are as follows. (1) The connection position of the connection terminal 5 can have a degree of freedom in the axial direction, thereby realizing a connection structure that absorbs a length error or the like of the modularized power supply line 4 and improves workability at the installation site. . (2) Since the screw holes 8 are formed at equal intervals, it can be said that the degree of freedom of the connection position is high. (3) Further, since the length X of the long hole 6 is formed to a necessary minimum with respect to the pitch and the diameter of the screw hole 8, the connection terminal 5 is also formed to a necessary minimum size.

(Embodiment 2) Next, another embodiment of the present invention will be described.

The power supply line is cut into a predetermined length (about 3 to 15 meters) as in the first embodiment, and is configured as a modular power supply line 24 having connection terminals 25 at both ends.

As shown in FIGS. 4 and 5, the connecting terminal 25 has two anchoring projections 26 on the left and right sides of the connecting terminal 25.
Are formed.

On the other hand, a rectangular parallelepiped terminal block 27 formed of an elastic member such as rubber or synthetic resin has a U-shaped cross section in which two parallel rows of projecting portions 27a are formed. A groove 28 is provided in the axial direction of the protruding portion 27a (the direction in which the power supply line is laid). The groove 28 has, at its center, a narrow portion 28a made of a conductor into which the connection terminal is fitted (however, the upper and lower narrow rows 28a are electrically insulated from each other). Further narrow portion 28
On both inner walls facing each other, a concave portion 30 having a U-shaped cross section and an inverted U-shaped cross section in which the mooring projection 26 is moored is provided with the opening facing each other.

(Operation) The connecting portions configured as described above are connected by the anchoring projections 26 of the connection terminals 25 being anchored in the recesses 30 of the narrow portion 28a of the terminal block.

At the time of connection, the terminal block 2 made of an elastic member
7, the connection terminal 25 is fitted into the narrow portion 28a, and the mooring protrusion 2 of the connection terminal 25 is pushed.
6 and the recess 30 are moored. Connection terminal 25 and narrow portion 28
Conductivity is ensured by the contact of a.

(Effects) The effects of this embodiment are as follows. (1) The connection terminal 25 is fitted into the narrow portion 28a of the terminal block 27 at a position corresponding to the length of the modularized power supply line 24, and the connection position of the connection terminal 25 has a degree of freedom in the axial direction. Therefore, it is possible to absorb a variation in the length of the power supply line due to a manufacturing error of the power supply line of the modularized power supply line 24 and the like. (2) In addition, one-touch connection is possible without using tools or the like, so that workability at an installation site can be improved, and even if the layout of the transport path is changed, the modularized power supply line 24 can be easily connected. Can be disconnected and reconnected. (3) Further, the terminal block 27 made of an elastic member is deformed,
Since the connection terminal 25 is fitted to this, the configuration on the mooring projection 26 side is simplified.

(Modification) According to the present invention, the above embodiment can be modified and implemented as follows. In the first embodiment, the length X of the long hole 6 is substantially equal to the total length of the screw hole pitch Y and the diameter of the screw hole 8. The present invention can be implemented as long as the length is equal to or longer than the sum of the pitch Y of 8 and the diameter of the screw hole 8. In the first embodiment, the screw holes 8 are formed at equal intervals, but may be formed at irregular intervals. In the second embodiment, the mooring protrusion 26 may be provided with a spring material or the like so as to be retractable. or,
The shape of the mooring protrusion 26 and the shape of the narrow portion 28a are not limited to these. In the second embodiment, the narrow portion 28a may have a structure that urges the connection terminal 25. For example, the narrow portion 28a itself forming the concave portion may be a holding portion made of a spring member or the like having elasticity. It is also possible to configure. According to this, even if connection is not made by screws or the like, the connection terminal 25
Even when the structure like the mooring protrusion 26 is not provided on the side, the narrow width portion 28a itself urges the connection terminal 25 and the connection is fixed, so that connection with a simple structure is possible. In the second embodiment, the mooring protrusion 26 has a fixed structure. However, if the mooring protrusion 26 is configured to be able to protrude and retract using a member such as a spring, it can be fitted to the narrow portion 28a forming the recess. Since it is not necessary to deform the terminal block 27 side, it is not necessary to configure the terminal block 27 as an elastic member.

[0028]

According to the first and second aspects of the present invention,
A connection structure with good workability at an installation site that can absorb variations in the length of the power supply line due to a manufacturing error of the modularized power supply line and realize simple connection at many locations is realized.

According to the third to fifth aspects of the present invention, in addition to absorbing variations in the length of the power supply line due to a manufacturing error of the power supply line, workability is improved by one-touch connection without using a tool. Further, a connection structure that can easily cope with a change in the layout of the transport path is realized.

According to the fourth aspect of the present invention, the connection is fixed by the urging of the connection terminal by the concave portion, so that the connection terminal side can have a simple configuration.

According to the fifth aspect of the present invention, when the mooring protrusion is configured to be able to protrude and retract, the terminal block does not need to be deformed when fitted into the recess, so that the terminal block is configured as an elastic member. There is no necessity, and the terminal block side can have a simple configuration.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a modularized power supply line according to a first embodiment.

FIG. 2 is a partial perspective view illustrating a transport system using a non-contact power supply system according to the first embodiment.

FIG. 3 is an enlarged view showing a connection portion of a power supply line in the first embodiment.

FIG. 4 is an enlarged view showing a connection portion of a power supply line in a second embodiment.

FIG. 5 is a connection operation diagram of a power supply line in a second embodiment.

FIG. 6 is a diagram showing a state of erection of a power supply line in a conventional technique.

[Explanation of symbols]

 5 Connection terminal, 4 (Modularized) power supply line, 7, 27 terminal block, 8 screw hole, 6 long hole, 9 screw, 28 groove, 30 recess, 26 mooring protrusion.

Continued on the front page (72) Inventor Katsuyuki Morita 2-1-1 Toyota-cho, Kariya-shi, Aichi F-term in Toyota Industries Corporation (reference) 5E012 BA12 5G355 AA10 BA01 BA11

Claims (5)

[Claims] 1. A power supply line having a connection terminal at an end,
The terminal block has a structure in which a plurality of screw holes are linearly arranged in the axial direction, while the connection terminal has an elongated hole extending in the axial direction. The length of the long hole is not less than the sum of the pitch of the screw hole and the diameter of the screw hole, and the connection terminal is attached by a screw screwed into the screw hole. A connection structure for a power supply line, characterized in that: 2. The connection structure for a power supply line according to claim 1, wherein the screw holes are arranged at equal intervals. 3. A power supply line having a connection terminal at an end,
It is a structure connected to each other via a terminal block, wherein the terminal block is provided with a groove in the axial direction, at least one of the opposing inner walls in the groove is provided with a recess, An anchoring projection is provided at a position corresponding to the recess, and the anchoring projection is anchored in the recess. 4. The connection structure for a power supply line according to claim 3, wherein the recess urges the connection terminal. 5. The connection structure for a power supply line according to claim 3, wherein the mooring protrusion is capable of protruding and retracting.