JP3901935B2 - Terminal connection for connecting cable of floating coil of linear motor car - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The terminal connection part for the connection cable of the levitation coil of the linear motor car according to the present invention is the end of the connection cable for connecting the levitation coils for the linear motor car to each other, and the end of the coil conductor constituting the levitation coil. Used to connect to the department.
[0002]
[Prior art]
The levitation coil of the linear motor car is installed over the entire length of the track on the inner surface of the side wall constructed beside the track. The ends of the levitation coils that face each other across the track are connected to each other by a connection cable called a null flux cable. Conventionally, the connection portion between the end portion of the levitation coil and the end portion of the connection cable has been configured as shown in FIGS.
[0003]
In this conventional structure, flat terminals 2 and 2 are fixed to the end portions of the coil conductors constituting each floating coil of the floating coil unit 1, and the housing 3 of the floating coil unit 1 is connected to the end portions of the terminals 2 and 2. A mounting hole 4 is provided in a portion exposed outside. On the other hand, at the end of the cable conductor 6 constituting the connection cables 5 and 5, the compression terminal 8 is connected to the portion exposed from the insulation layer 7 by peeling off the insulation layer 7 constituting each of the cables 5 and 5 It is fixed.
[0004]
Then, the bolt 9 and the nut 10 inserted through the compression terminal 8 and the mounting hole 4 are screwed together and further tightened, whereby the terminals 2 and 2 and the cable conductors 6 of the connection cables 5 and 5 are connected. Connected. At present (in the linear experiment line), the ends of the terminals 2 and 2, the compression terminals 8 and 8, and the ends of the cable conductors 6 and 6 are left exposed. In the case of a wire), in order to prevent corrosion of each of these members 2, 8, and 6 and to secure the durability of the connection portion, each of these members 2, 8, and 6 is configured by winding an insulating tape or the like. It is necessary to cover with the waterproofing treatment layer 11 made.
[0005]
Further, although it is not a structure conventionally used for connection of a floating coil for a linear motor car, if a general cable terminal connection portion is applied to connection of a floating coil for a linear motor car, FIGS. A structure as shown in FIG. In the case of this structure, the end of the coil conductor 12 constituting each levitation coil of the levitation coil unit 1 is bent at a right angle to form a circular terminal 13, and the tip half of this terminal 13 is used as the levitation coil unit. It protrudes from the front or back of 1. Further, a fitting locking portion 14 is formed in a portion surrounding the terminal 13 on the front or back surface of the floating coil unit 1. On the other hand, a substantially L-shaped insulating tube 16 made of an elastic material is provided so as to cover the periphery of the compression terminal 15 connected and fixed to the end of the cable conductor 6 constituting the connection cables 5 and 5. A connecting hole 17 into which the tip half of the terminal 13 can be inserted is formed at the tip of the compression terminal 15, and an elastic metal contact 18 is provided on the inner peripheral surface of the intermediate part of the connecting hole 17. ing.
[0006]
In order to connect the coil conductor 12 and the cable conductor 6, the terminal 13 is inserted into the connection hole 17, and the distal end opening of the insulating tube 16 is externally fitted to the fitting locking portion 14. . In this state, the terminal 13 and the compression terminal 15 are electrically connected via the contact 18, and the engagement convex portion 19 formed on the inner peripheral edge of the distal end opening of the insulating cylinder 16 and the fitting locking portion 14 is engaged with the engagement recess 20 formed on the outer peripheral surface of the base end portion over the entire circumference. As a result, rainwater or the like is prevented from entering the connecting portion between the coil conductor 12 and the cable conductor 6 to ensure insulation of the connecting portion, and each member 13, 15, 18 constituting the connecting portion. 6 to prevent corrosion.
[0007]
[Problems to be solved by the invention]
In the case of the conventional structure shown in FIGS. 9 to 12, since the connection between the terminal 2 and the compression terminal 8 is performed by screwing and tightening the bolt 9 and the nut 10, not only the connection work itself is troublesome but also insulation is performed. The operation for forming the waterproof layer 11 by winding a tape or the like is also very troublesome. For this reason, it is not appropriate to use it for the connection part of a floating coil of a linear practical line whose length is several hundred km.
[0008]
Further, in the case of the structure shown in FIGS. 13 to 16, the insulating cylinder 16 provided at the end of each connection cable 5, 5 protrudes greatly from the front surface or the back surface of the floating coil unit 1. For this reason, the body of the worker who performs the connection work of the connection cables 5 and 5 at the time of construction of the linear wire or the body of the worker who performs maintenance management after the construction is likely to collide with the insulating cylinder 16. And when it collides, the said insulation cylinder 16 will remove | deviate from the said floating coil unit 1, and the connection of the cable conductor 6 and the coil conductor 12 may be disconnected.
In view of such circumstances, the present invention is for a connection cable for a floating coil of a linear motor car that is easy to connect and that is not inadvertently disconnected due to a collision with an operator's body. The present invention has been invented to realize a termination connection portion.
[0009]
[Means for Solving the Problems]
The terminal connection portion for the connection cable of the levitation coil of the linear motor car of the present invention includes an end portion of a cable conductor constituting the connection cable for connecting the levitation coils for the linear motor car to each other, and an end portion of the cable conductor. Is connected to a terminal provided at an end portion of the coil conductor, which is provided in a part of the floating coil unit to be connected and constitutes the floating coil unit.
In particular, in the terminal connection portion for the connection cable of the floating coil of the linear motor car of the present invention, the terminal of the cable conductor is fitted to the terminal of the floating coil unit at the end of the cable conductor. A connector is provided for conducting the conductor. In addition, in the state where the majority part including at least the connection end of the connector is inserted into a part of the floating coil unit where the terminal is provided, the connector is interposed between the outer peripheral surface of the connector and the inner surface thereof. A recess for interposing a gap for inserting the hand of a worker who grips the terminal is provided independently for each of the terminals . Then, the connection end portion and the terminal of the connector is fitted and connected to each other within the recess.
[0010]
[Action]
In the case of the terminal connection portion for the connection cable of the floating coil of the linear motor car of the present invention configured as described above, the cable conductor is configured as a floating coil unit simply by fitting the connection end of the connector and the terminal. Since it can be connected to the coil conductor, the connection work can be easily performed. In this state, at least a majority of the connector is present in a recess provided independently for each of the terminals. Therefore, the connector does not protrude from the outer surface of the floating coil unit or temporarily protrudes. However, the amount of protrusion is very small. Accordingly, it is possible to sufficiently prevent the connection between the connector on the cable side and the terminal on the floating coil unit side from being inadvertently disconnected. In addition, since a worker's hand can be inserted between the outer peripheral surface of the connector and the inner surface, the connector is pulled away from the terminal to disconnect the floating coil conductor from the cable conductor for repair or the like. Work can be done easily.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
1-4 show a first example of an embodiment of the present invention corresponding to claims 1 and 2. In the case of this example, as in the case of the structure shown in FIGS. 13 to 15 described above, by bending the ends of the coil conductors 12 constituting the levitation coils of the levitation coil unit 1 at a right angle, Terminal 13. However, in the case of this example, a recess 21 is formed in a part of the levitation coil unit 1 so as to open to the front surface or the rear surface and the lower surface of the levitation coil unit 1, and the terminal 13 is connected to the back of the recess 21. It protrudes in the horizontal direction from the inner surface of the part (upper part of FIGS. 1 to 4) to the front side or the rear side of the floating coil unit 1 .
[0012]
The recess 21 is formed at the time of molding the synthetic resin constituting the housing 3 of the levitation coil unit 1 and has a shape and size that can accommodate the entire connector 22 described below. That is, the recess 21 has a narrow width (in the left-right direction in FIG. 4), a deep depth (in the left-right direction in FIG. 3), an intermediate portion 24 that is wide and deep, and a width. Narrow and shallow end portions 25 are arranged in series from top to bottom. In addition, a circular fitting hole 26 is formed in the inner surface of the inner portion 23, and an engaging convex portion 27 is formed on the inner peripheral surface of the opening of the fitting hole 26 over the entire circumference. ing. As is apparent from FIGS. 1 and 2, such a recess 21 is provided independently for each terminal 13 (one recess 21 per one terminal 13).
[0013]
On the other hand, connectors 22 are provided at the ends of the connection cables 5 and 5, respectively. The connector 22 is formed by covering the periphery of the compression terminal 15 with an insulating cylinder 16a made of an elastic material such as rubber. Of these, the compression terminal 15 is made of a metal having good conductivity, such as copper, and a connection hole 17 into which the terminal 13 can be inserted is provided at the tip (upper end in FIG. 3). Is formed in a state of penetrating in the cross-sectional direction. In addition, a second connection hole 28 is opened in the base end surface (lower end surface in FIG. 3) of the compression terminal 15 at the base end portion (lower end portion in FIG. 3) of the compression terminal 15. Are formed in the axial direction (vertical direction in FIG. 3). Such a compression terminal 15 is formed by reducing the diameter of the base end portion of the cable conductor 6 constituting the connection cables 5 and 5 in the second connection hole 28 and reducing the diameter of the base end portion. By fixing to the conductor 6, it is coupled to the ends of the connection cables 5 and 5. An elastic metal contact 18 is provided on the outer peripheral surface of the intermediate portion of the connection hole 17. The inner diameter of the contact 18 is smaller than the outer diameter of the terminal 13 in a free state, but can be elastically expanded by inserting the terminal 13 inside thereof.
[0014]
The insulation tube 16a is generally L-shaped, and covers the compression terminals 15 and the ends of the cable conductors 6 and the insulation layer 7 so that the ends of the connection cables 5 and 5 are covered. Provided in the department. Further, an insertion hole 29 is provided at a portion of the distal end portion of the insulating layer 16a aligned with the opening on one side (left side in FIG. 3) of the connection hole 17 provided at the distal end portion of the compression terminal 15. The insertion hole 29 is a tapered hole inclined in a direction in which the inner diameter increases toward the tip (left end in FIG. 3) opening. Furthermore, an engagement recess 30 that engages with the engagement protrusion 27 is formed on the outer peripheral surface of the distal end portion of the insulating cylinder 16a over the entire circumference.
[0015]
In order to connect the coil conductor 12 and the cable conductor 6, the connector 13 is moved in the horizontal direction and brought close to the floating coil unit 1, whereby the terminal 13 is connected to the connection hole 17 through the insertion hole 29. The tip of the insulating cylinder 16 a is fitted into the fitting hole 26 while being inserted into the fitting hole 26. In this state, the terminal 13 and the compression terminal 15 are electrically connected via the contact 18, and the engagement recess 30 formed on the outer peripheral surface of the distal end portion of the insulating cylinder 16 a and the inside of the fitting hole 26. Engaging protrusions 27 formed on the peripheral surface are elastically engaged over the entire circumference. As a result, rainwater or the like is prevented from entering the connecting portion between the coil conductor 12 and the cable conductor 6 to ensure insulation of the connecting portion, and each member 13, 15, 18 constituting the connecting portion. 6 to prevent corrosion.
[0016]
Also, in this state, the insulating cylinder 16a constituting the connector 22 is almost entirely immersed in the recess 21 provided independently for each terminal 13 as described above . In other words, the connector 22 does not protrude greatly from the floating coil unit 1. For this reason, the body of the worker who works in the vicinity of the levitation coil unit 1 is less likely to contact the connector 22, and even if contacted, the connector 22 is connected to the terminal 13 on the levitation coil unit 1 side. There will be no additional force in the direction of losing. As a result, it is possible to sufficiently prevent the connector 22 and the terminal 13 from being inadvertently disconnected. In order to prevent the connector 22 and the terminal 13 from coming off, it is more effective to increase the amount of the connector 22 inserted into the concave portion 21. However, the majority of the connector 22 including the connecting end portion is inserted. If so, a sufficiently effective detachment preventing effect can be obtained.
[0017]
On the other hand, when the coil conductor 12 and the cable conductor 6 are disconnected for repair or the like, the connector 22 including the insulating tube 16a is connected to the terminal 13 with the intermediate portion of the insulating tube 16a. Pull apart. This operation is performed by inserting a hand into the intermediate portion 24 of the concave portion 21, but since the intermediate portion 24 is formed wide, this operation can be easily performed. That is, a gap is inserted between the inner surface of the recess 21 and the outer peripheral surface of the connector 22 for inserting the hand of an operator who holds the connector 22.
[0018]
Next, FIGS. 5 to 8 show a second example of the embodiment of the present invention, corresponding to claim 1 only . In the case of the first example described above, the substantially L-shaped connector 22 is moved in a direction perpendicular to the surface of the floating coil unit 1 ( horizontal direction, left and right direction in FIG. 3, front and back direction in FIG. 4), The terminal 13 provided at the end of the coil conductor 12 is engaged / disengaged. On the other hand, in the case of this example, the linear connector 22a is provided at the end of the connector 22a and the coil conductor 12 while moving in the surface direction of the floating coil unit 1 (vertical direction in FIGS. 7 to 8). The terminal 13a is engaged / disengaged.
[0019]
For this reason, in the case of this example, a recess 21a is formed in the lower end portion of the levitation coil unit 1 so as to open to the front surface or the back surface and the lower surface of the levitation coil unit 1, and the back end surface of the recess 21a. The terminal 13a is provided on the (upper end surface) so as to protrude downward from the inner end surface. As the structure of the connection portion between the terminal 13a and the connector 22a, various structures conventionally used for the straight connection portion can be used. Also in this example, each of the recesses 21a is provided independently for each of the terminals 13a. In the illustrated example, the cylindrical cover tube portion 31 around the pin 13a, to the terminal 13a concentric, are provided integrally with the synthetic resin housing 3 constituting the levitation coil unit 1. The inner diameter of the cover cylinder portion 31 is larger than the outer diameter of the terminal 13a, and the compression terminal described below is in a cylindrical gap existing between the inner peripheral surface of the cover cylinder portion 31 and the outer peripheral surface of the terminal 13a. The connecting tube portion 33 provided in the tip half portion (the upper half portion of FIG. 7) of 32 can be inserted freely.
[0020]
The compression terminal 32 has a base half (the lower half of FIG. 7) bonded and fixed to the end of the cable conductor 6 constituting the connection cable 5, and the tip half is a cylindrical connection tube 33. The contact 18 is provided on the inner peripheral surface of the intermediate portion of the connecting tube portion 33. Further, in order to cover the compression terminal 32, the end portion of the cable conductor 6 and the end portion of the insulating layer 7, an engagement convex portion 27a is provided on the inner peripheral surface of the tip end portion of the cylindrical insulating tube 16b on the entire circumference. It is formed in a row. And this engagement convex part 27a and the engagement recessed part 30a formed in the intermediate part outer peripheral surface of the said cover cylinder part 31 over the perimeter are detachable.
[0021]
In order to connect the coil conductor 12 and the cable conductor 6, the connector 22 a is inserted into the recess 21 a from the lower surface side of the floating coil unit 1. Then, the terminal 13 a is inserted into the connection tube portion 33, and the front half of the insulating tube 16 b is externally fitted to the cover tube portion 31. In this state, the terminal 13a and the compression terminal 32 are electrically connected via the contactor 18, and the engagement recess 30a and the engagement protrusion 27a formed on the outer peripheral surface of the distal end portion of the insulating cylinder 16b. Are elastically engaged over the entire circumference. As a result, rainwater or the like is prevented from entering the connecting portion between the coil conductor 12 and the cable conductor 6 to ensure insulation of the connecting portion, and each member 13a, 32, 18 constituting the connecting portion. 6 to prevent corrosion.
[0022]
Further, in this state, the insulating cylinder 16b constituting the connector 22a is almost entirely submerged in the recess 21a except for its lower end. For this reason, the body of the worker who works in the vicinity of the floating coil unit 1 becomes difficult to contact the connector 22a, and even if it is contacted, the connector 22a is connected to the terminal 13a on the floating coil unit 1 side. There will be no additional force in the direction of losing. As a result, it is possible to sufficiently prevent the connector 22a and the terminal 13a from being inadvertently disconnected. Also in the case of this example, if the majority part including the connection end part of the connector 22a is submerged in the recess 21a, a sufficient detachment preventing effect can be obtained.
[0023]
On the other hand, when disconnecting the coil conductor 12 and the cable conductor 6 for repair or the like, hold the insulating tube 16b and separate the connector 22a including the insulating tube 16b from the terminal 13a. Displace downward. This operation is performed by inserting a hand into the concave portion 21a. Since the width of the concave portion 21a is sufficiently larger than the outer diameter of the insulating cylinder 16b, this operation can be easily performed. That is, also in the case of this example, a gap for inserting the hand of an operator who grips the connector 22a is interposed between the inner surface of the recess 21a and the outer peripheral surface of the connector 22a.
[0024]
【The invention's effect】
Because the present invention acts is constructed as mentioned above, easy attachment and detachment, it is possible to prevent corrosion of the components over a long period of time, yet levitation coils inadvertently have never connected state is out Maglev It is possible to realize an end connection for a connection cable.
[Brief description of the drawings]
FIG. 1 is a partial perspective view showing a first example of an embodiment of the present invention in a disconnected state.
FIG. 2 is a partial perspective view showing the connected state.
3 is a cross-sectional view taken along the line AA in FIG.
4 is a diagram viewed from the right side of FIG. 3;
FIG. 5 is a partial perspective view showing a second example of the embodiment of the present invention in a disconnected state.
FIG. 6 is a partial perspective view showing the connected state.
7 is a cross-sectional view taken along the line BB in FIG.
8 is a diagram seen from the right side of FIG.
FIG. 9 is a partial perspective view showing an example of a conventional structure in a disconnected state.
FIG. 10 is a partial perspective view showing the connected state.
11 is a cross-sectional view taken along the line CC in FIG.
12 is a sectional view taken along the line DD of FIG.
FIG. 13 is a partial perspective view showing a state in which a general connection structure is applied to a cable connection for a floating coil in a non-connected state.
FIG. 14 is a partial perspective view showing the connected state.
15 is a cross-sectional view taken along the line E-E in FIG. 14;
16 is a view from the right side of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Levitation coil unit 2 Terminal 3 Housing 4 Mounting hole 5 Connection cable 6 Cable conductor 7 Insulation layer 8 Compression terminal 9 Bolt 10 Nut 11 Waterproofing layer 12 Coil conductor 13, 13a Terminal 14 Fitting latching part 15 Compression terminal 16, 16a , 16b Insulating cylinder 17 Connection hole 18 Contact 19 Engaging convex part 20 Engaging concave part 21, 21a Concave part 22, 22a Connector 23 Deep part 24 Intermediate part 25 End part 26 Fitting hole 27, 27a Engaging convex part 28 Second Connection hole 29 Insertion hole 30, 30a Engaging recess 31 Cover cylinder part 32 Compression terminal 33 Connection cylinder part

Claims (2)

This levitation coil unit is provided at the end of the cable conductor constituting the connection cable for connecting the levitation coils for the linear motor car to each other and a part of the levitation coil unit to which the end of the cable conductor is to be connected. Connecting the terminal provided at the end of the coil conductor, and the terminal connection portion for the connecting cable of the floating coil of the linear motor car, the end of the cable is connected to the floating coil unit side. A connector is provided for electrically connecting the terminal to the cable conductor by fitting with the terminal, and the majority of the floating coil unit including at least the connection end of the connector in a portion where the terminal is provided. With a gap between the outer peripheral surface of the connector and the inner surface of the connector. Recesses for the provided independently for every one the terminal, and the connection end portion and the terminal of the connector, levitation coil maglev, characterized in that fitting connected together within this recess Terminal connection for connecting cables. The terminal protrudes horizontally from the inner surface of the recessed portion to the front side or the rear side of the floating coil unit, and the connector includes an insulating tube that is generally L-shaped, and the inner side of the upper end of the insulating tube. 2. The connection hole for inserting and connecting the terminal to the terminal is provided in a horizontal direction, and the terminal and the connector are attached and detached by moving the connector in the horizontal direction. Termination connection for connecting cable of floating coil of linear motor car.

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