JP5448756B2 - Shielded flat cable and its connection structure - Google Patents

Description

  More particularly, the present invention relates to a shielded flat cable that can be used as a high-voltage wire harness for a vehicle having a high-voltage circuit such as an electric vehicle. The present invention relates to a shielded flat cable that can be realized.

  Hitherto, high-voltage wire harnesses used cables in which the periphery of a heat-resistant automobile wire is covered with a braided wire and the periphery thereof is covered with an insulating layer. Some of these cables are covered with a braided wire, and other cables are covered with a braided wire.

  For the connection of the former cable end, after fitting the waterproof rubber and retainer on the outside of the outer insulating layer, peel off the insulating layer to expose the braided wire, fold this braided wire, and then attach the braided wire to the bracket Tighten with or terminal to make electrical connection. Next, after stripping the coating of the wires and connecting the terminals by crimping, the terminals etc., which are housed in an insulating housing and crimped with braided wires, are connected to the electromagnetic shielding outer shell of the connector to obtain an electromagnetic shielding effect . Finally, the waterproof rubber is inserted into the insulating housing with a retainer to obtain a waterproof effect. Thus, the terminal connection work, particularly the processing of the terminal, is complicated.

  For the connection of the terminal of the latter cable, first, a rubber plug is inserted into the electric wire, and then a terminal crimping process is performed, and the waterproof effect is obtained by storing in an insulating housing. Finally, the braided wire is directly tightened and connected to the outer shell of the electromagnetic shield. In this case, the processing of the terminal is somewhat easier than in the former case, but has the following problems.

  That is, because of the high voltage, the pitch of the connector terminals is wide and the terminals are large. However, the cable portion is small because the electric wires are insulated, and it is not necessary to make the braided wire so large. Also, it is desired that the cable diameter be as small as possible. For this reason, the braided wire of the terminal part is inevitably widened in accordance with the shield fitting covering the outermost part of the connector, and a gap is formed. And the leakage of the high frequency electromagnetic wave becomes large from this gap.

  Moreover, since the braided wire is not waterproof, the dissimilar metal connection part with the shield metal fitting is easily corroded. For this reason, contact resistance also increases during long-term use, and the low frequency electromagnetic shielding performance gradually deteriorates.

  By the way, although what was indicated by the following patent documents 1 is known as a shield flat cable, the connection of the terminal of such a shield flat cable is connected using a connector, or the connection part of a connection partner. The method of soldering and connecting directly to is taken.

Japanese Utility Model Publication No. 2-59521

  However, in the connection using the connector, there is a problem that a space for the connector must be provided in the connection portion, and the cost of the connector is increased. In addition, in the connection by soldering, there is a problem that the work is complicated.

  Accordingly, the main object of the present invention is to facilitate the connection work, reduce the cost and reduce the size, and easily obtain a good shielding effect.

  Means for this is a shielded flat cable having flat conductors arranged in parallel at intervals, an insulating coating covering the rectangular conductor, and a shield conductor for electromagnetic shielding coated on the insulating coating. And the arrangement pitch of the terminal portions of the rectangular conductor is set equal to the pitch of the connection portion to be connected, a connection through hole is formed in the terminal portion, and the shield conductor includes a plurality of shield conductors. It is a shield flat cable comprised with the metal foil which coat | covers the perimeter of the said flat conductor.

  The through hole can be formed by attaching an eyelet.

  The terminal portion of the flat rectangular conductor may be formed with a square radius.

  A shielded flat cable in which the terminal surface of the insulating coating is formed at a position exposing the terminal portion of the flat conductor, and the terminal surface of the shield conductor is formed at a position exposing the terminal portion of the insulating coating. There may be.

  A shielded flat cable in which the flat conductor and the insulating coating are relatively movable in the longitudinal direction of the flat conductor, or a shielded flat cable in which the insulating coating and the shield conductor are relatively movable in the longitudinal direction of the insulating coating may be used.

  Another means is to provide a shielded flat cable having a rectangular conductor arranged in parallel at intervals, an insulating coating covering the rectangular conductor, and a shield conductor for electromagnetic shielding coated on the insulating coating. It is the said flat conductor used, Comprising: The said insulation coating is a flat conductor which can move relatively in the longitudinal direction of the said flat conductor. The terminal portion may be formed with a through-hole for connection to a connection portion that is a connection partner.

  Still another means connects the terminal portion of the rectangular conductor of the shielded flat cable in which the terminal portion of the flat conductor, the insulating coating, and the shield conductor are exposed in this order from the terminal side to the connecting portion, and the shield conductor. This is a shield flat cable connection structure in which the exposed exposed portion of the shield conductor is grounded.

  In this case, an outer layer covering portion may be provided on the opposite side of the shield conductor exposed portion from the terminal side, and a sealing material may be held on the outer periphery of the outer layer covering portion.

  According to this invention, since the arrangement pitch of the terminal portions of the rectangular conductors is equal to the pitch of the connection portions and the through holes for connection are provided, no connector or soldering is required, and the connection work is easy. Further, the cost can be reduced and the size can be reduced, and a good shielding effect can be obtained while having a simple connection workability by the shielding conductor covering the entire circumference of the plurality of flat rectangular conductors.

The perspective view which shows the terminal side of a shield flat cable. The top view which shows the structure by the side of the terminal of a shield flat cable. The top view of a flat conductor. The top view of the flat conductor which concerns on another example. Explanatory drawing of the coating method of a shield conductor. The top view which shows the end surface structure of the shield flat cable which concerns on another example. The top view which shows the structure by the side of the terminal of the shielded flat cable which concerns on another example. The top view of the flat conductor of the shield flat cable shown in FIG. Explanatory drawing which shows the formation method of the insulation coating with respect to the flat conductor shown in FIG. The top view which shows the effect | action state of the flat conductor and insulation coating of the shield flat cable shown in FIG. Explanatory drawing which shows the coating method of the shield conductor of the shield flat cable shown in FIG. The top view of the flat conductor which concerns on another example. The top view which shows the structure by the side of the terminal of the shielded flat cable which concerns on another example. The top view which shows the structure by the side of the terminal of the shielded flat cable which concerns on another example. The top view of the flat conductor which concerns on another example. The top view of the flat conductor which concerns on another example. Sectional drawing which shows the connection structure of a shield flat cable. Sectional drawing which shows the connection structure of the shield flat cable which concerns on another example. The side view which shows the wiring structure of a shield flat cable. The side view which shows the wiring structure of a shield flat cable.

An embodiment for carrying out the present invention will be described below with reference to the drawings.
In the present invention, as shown in FIGS. 1 and 2, the connection work is easy, the cost and size can be reduced, and a good shielding effect can be easily obtained. A shielded flat cable 11 having a flat conductor 21 arranged in parallel, an insulating coating 31 covering the flat conductor 21, and a shield conductor 41 for electromagnetic shielding coated on the insulating coating 31, The arrangement pitch p1 of the terminal portions 22 of the rectangular conductor 21 is set to be equal to the pitch p2 of the connecting portions 61 to be connected, and a connecting through hole 23 is formed in the terminal portion 22, and the shield conductor 41 However, the shield flat cable 11 made of a metal foil covering the entire circumference of the plurality of flat conductors 21 was realized.

  This will be specifically described below. First, the structure of the shield flat cable 11 will be described, and then the connection structure of the shield flat cable 11 will be described.

  FIG. 1 is a perspective view showing a terminal side of the shielded flat cable 11. As shown in this figure, the shielded flat cable 11 has a plurality of the rectangular conductors 21. The terminal surface 31a of the insulating coating 31 is formed at a position where the terminal portion 22 of the flat conductor 21 is exposed, and the terminal surface 41a of the shield conductor 41 exposes the terminal portion 32 of the insulating coating 31. Formed in position.

  The rectangular conductor 21 is formed of copper, aluminum (particularly pure aluminum) or the like, and is a long object having a rectangular section and a predetermined thickness t and width w. The surface of the flat conductor 21 is preferably surface-treated with tin plating or the like. This is because the connection stability can be improved.

  The rectangular conductors 21 are arranged with a predetermined gap 51 in the width direction. The gap 51 is determined in consideration of the insulation distance (spatial distance and creepage distance) according to the voltage.

  The terminal portion 22 of the flat conductor 21 is formed in a terminal shape. That is, a through hole 23 is formed for connection to the connection portion 61 (see FIG. 2) to be connected, for example, a terminal block of a motor or an inverter. As shown in FIG. 2, the arrangement pitch p <b> 1 of the terminal portions 22 having the through holes 23 is set to be equal to the pitch p <b> 2 of the connection portions 61. In the illustrated examples of FIGS. 1 and 2, the width of the terminal portion 22 in the flat conductor 21 and the width of the other main body side are the same, so the arrangement pitch p <b> 1 of the flat conductor 21 is the same as the pitch p <b> 2 of the connecting portion 61. It can be said that. 2A shows a state viewed from a direction perpendicular to the longitudinal direction, and FIG. 2B shows a state viewed from the end surface direction of the terminal.

  The terminal portion 22 of the flat conductor 21 is also formed by taking a corner radius. With the corner rounded portion 24, the terminal end surface 22 a of the terminal portion 22 is formed in an arc shape in plan view. The shape of the corner radius portion can be set as appropriate. The corner rounded portion 24 may be omitted, and a shape having corners may be used.

  Each of such a plurality of flat conductors 21 has the insulating coating 31. FIG. 3 is a plan view showing the terminal side of the rectangular conductor 21. The insulating coating 31 is formed by a known method such as extrusion, lamination, or enamel baking of an insulating resin such as vinyl chloride or polypropylene. If it is not strongly bonded by wrapping it with a tube made of an insulating resin or the like, the removal work for peeling off the insulating coating is easy.

  The terminal portion 22 of the flat conductor 21 is formed by removing the insulating coating 31 on the surface. If it is complicated to remove the insulating coating, the through-hole 23 may be formed using the eyelet 25 as shown in FIG. As shown in FIG. 4A, the diameter of the through hole 23 is set to a width (w1) that is about one third of the width (3w1) of the flat conductor 21, more precisely, to 3.14. It is preferable to do this. This is because the contact area of the eyelet 25 substantially matches the cross-sectional area of the flat conductor 21.

  The plurality of individually insulated flat rectangular conductors 21 are covered with the shield conductor 41 with the predetermined gap 51 therebetween. For the shield conductor 41, copper foil, aluminum foil, or the like is used as appropriate. When the casing having the connection portion 61 (see FIG. 2) is made of aluminum die cast or aluminum plate, aluminum foil is used. It is desirable to use it. This is because the same material has good corrosion resistance.

  The shield conductor 41 is also preferably surface-treated by tin plating or the like.

  The shield conductor 41 is covered so that the insulating coating 31 and the shield conductor 41 can move relative to each other in the longitudinal direction of the insulating coating 31 (see the arrow in FIG. 2). In order to make this possible, for example, the shield conductor 41 may be covered as shown in FIG. That is, the shield conductor 41 is wound around the rectangular conductors 21 with the insulating coating 31 arranged with a predetermined gap 51 therebetween, and the edges of the shield conductor 41 are joined together by welding or the like, and the gap 51 corresponds to the gap 51. In the portion 42, the shield conductors 41 are joined together by welding or the like. The joining of the portion 42 corresponding to the gap 51 may be performed intermittently in addition to the entire longitudinal direction. This is because the shield performance is not affected. Examples of the welding include ultrasonic welding and resistance welding.

  Since the shield conductor 41 is integrated at a portion 42 corresponding to the gap 51 and is not integrally joined with the insulating coating 31, the predetermined arrangement pitch p1 of the rectangular conductor 21 is maintained while maintaining the predetermined pitch p1. Relative movement along the longitudinal direction is possible. Since relative movement is possible, it is easy to obtain the necessary creepage distance by appropriately setting the length of the exposed portion of the insulating coating 31.

  Further, for example, when the end of the shield conductor 41 is cut to an appropriate length, the processing can be easily performed without damaging the inner rectangular conductor 21. That is, since the shield conductor 41 is extremely thin, for example, about 0.05 mm, if the shield conductor 41 is cut on the insulating coating 31 that is as thin as this, the rectangular conductor 21 as well as the insulating coating 31 is damaged. Although there is a fear, since the insulation coating 31 and the shield conductor 41 move relative to each other in the longitudinal direction, the shield conductor 41 is cut off by a simple process of shifting the shield conductor 41 and then cutting with a simple jig such as a scissors. Yes, there is no need to use special tools.

  Further, since the shield conductor 41 wraps the whole of the plurality of flat conductors 21 including the outside of the flat conductors 21 on both sides, the shielding performance is guaranteed.

  As shown in FIG. 6, the shield conductor 41 is covered by using the two shield conductors 41, while the flat conductor 21 with the insulating cover 31 is separated from the flat conductor 21 with a predetermined gap 51. The both side edges 43 of the shield conductors 41 may be joined to each other in the same manner as the portion 42 corresponding to the gap 51 by sandwiching the shield conductors 41 in the thickness direction. In the case of having three rectangular conductors 21 as in the illustrated example, four places are joined. In this case, the joining of the side edges 43 of each shield conductor 41 is performed continuously without gaps over the entire longitudinal direction.

  On such a shield conductor 41, as shown in FIGS. 1, 2, and 6, an outer layer covering portion 71 is provided. The outer layer covering portion 71 is formed by an appropriate method such as resin coating or painting, and protects the internal shield conductor 41 and the like.

  As shown in FIGS. 1 and 2, the exterior covering portion 71 is formed so that the end side of the shield conductor 41 is appropriately exposed. The length of the shield conductor exposed portion 44 at which the shield conductor 41 is exposed may be a length necessary for ground connection, and specifically may be, for example, about 10 mm to 20 mm.

  The outer layer covering portion 71 is preferably coated in a state where it does not adhere tightly to the shield conductor 41 by using a tube made of an insulating resin, etc., and can be moved relative to the shield conductor 41 along the longitudinal direction. To do. If the relative movement is possible, the length of the shield conductor exposed portion 44 can be easily changed, and a desired shield conductor exposed portion 44 can be formed without damaging the inner shield conductor 41 or the like even with a simple operation such as cutting with a scissors. it can.

  Next, another embodiment of the shield flat cable 11 will be described. In this description, parts that are the same as or equivalent to those in the previous configuration are given the same reference numerals, and detailed descriptions thereof are omitted. The same applies hereinafter.

  FIG. 7 is a plan view showing the terminal side of the shielded flat cable 11. As shown in this figure, the shielded flat cable 11 includes the flat conductor 21 and the insulating coating 31 in the longitudinal direction of the flat conductor 21. The insulating coating 31 and the shield conductor 41 are relatively movable in the longitudinal direction of the insulating coating 31 while being relatively movable.

  FIG. 8 shows a plan view of a plurality of flat conductors 21 that can move relative to the insulating coating 31. The plurality of flat conductors 21 are all covered with one insulating coating 31. That is, collective insulation processing is performed. In the figure, 33 is a slit for securing a creeping distance between the rectangular conductors 21.

  The collective insulation treatment of the plurality of flat conductors 21 may be performed as shown in FIG. That is, a tube 34 made of an insulating resin to be the insulating coating 31 is prepared (see FIG. 9A). As the tube 34, an appropriate material such as polyester or polypropylene can be used. The rectangular conductors 21 arranged with a predetermined gap 51 are inserted into the tube 34 (see FIG. 9B). Thereafter, the facing portions 34 a of the tube 34 are joined to each other at a portion corresponding to the gap 51 between the flat conductors 21 in the tube 34. Joining is performed continuously over the entire length in order to ensure insulation. For example, it may be performed through a laminating roll (not shown). In addition to heat welding, bonding may be performed using an adhesive.

  The tube 34 that has become the insulating coating 31 is integrated at a portion corresponding to the gap 51 and is not integrally joined with the flat conductor 21, so that the predetermined arrangement pitch p <b> 1 of the flat conductor 21 is maintained. The relative movement along the longitudinal direction is possible as shown in FIG. Since the relative movement is possible, the length of the terminal portion 22 of the rectangular conductor 21 can be set as appropriate, and if the rectangular conductor 21 is protruded, the terminal portion 22 can be easily processed into a terminal shape.

  Further, by pressing the flat conductor 21, the length of the insulating coating 31 and the formation of the slit 33 for ensuring the creepage distance can be easily performed without damaging the flat conductor 21. The tool used to form the slit 33 is not special and may be simple.

  Furthermore, since the insulating coating 31 wraps the whole of the plurality of flat conductors 21 including the outside of the flat conductors 21 on both sides, the insulating performance is guaranteed.

  The insulating coating 31 is formed by sandwiching the flat conductor 21 in the thickness direction of the flat conductor 21 with two film materials (not shown), with a predetermined gap 51 therebetween. The both side edges of the film material can also be bonded to each other in the same manner as the bonding of the portion corresponding to the gap 51.

  The shield conductor 41 is covered on the insulating coating 31 of the plurality of flat conductors 21 subjected to the batch insulation treatment in this way.

  The shield conductor 41 is covered so that the insulating coating 31 and the shield conductor 41 can move relative to each other in the longitudinal direction of the insulating coating 31 (see the arrow in FIG. 7). In order to make this possible, for example, the shield conductor 41 may be covered as shown in FIG. That is, the metal foil 45 that becomes the shield conductor 41 is rounded into a cylindrical shape as shown in FIG. 11A, and the opposite side edges 45a of the metal foil 45 are butted together and joined by welding or the like. At the same time, the rectangular conductors 21 to which the insulating coating 31 is attached are inserted into the internal space of the metal foil 45 at the same time.

  At this time, since the plurality of flat conductors 21 are also rounded while the metal foil 45 is round, the joining of the side edges 45a of the metal foil 45 does not adversely affect the flat conductor 21 and the like due to heat. Can be done.

  Subsequently, as indicated by a white arrow in FIG. 11B, the metal foil 45 is pressed while the flat conductor 21 is flattened to form the metal foil 45 along the surface of the insulating coating 31.

  Although the shield conductor 41 covers the insulating coating 31 but is not integrally joined with the insulating coating 31, the insulating coating 31 including the flat conductors 21 has the predetermined arrangement pitch p1 of the rectangular conductors 21. The relative movement along the longitudinal direction as described above is possible while maintaining the state. Since relative movement is possible, it is easy to obtain the necessary creepage distance by appropriately setting the length of the exposed portion of the insulating coating 31.

  Further, for example, when the end of the shield conductor 41 is cut to an appropriate length, the processing can be easily performed without damaging the inner rectangular conductor 21.

  Further, since the shield conductor 41 wraps the whole of the plurality of flat conductors 21 including the outside of the flat conductors 21 on both sides, the shielding performance is guaranteed.

  Also in this case, the shield conductor 41 can be covered by using the two shield conductors 41 as described with reference to FIG. That is, the insulating coating 31 is sandwiched between the two shield conductors 41 in the thickness direction of the flat conductor 21, and both side edges 43 of the shield conductors 41 are joined to each other by welding or the like and correspond to the gap 51. The part is bonded to the part corresponding to the gap 51 in the insulating coating 31.

  On such a shield conductor 41, as shown in FIGS. 7 and 11C, an outer layer covering portion 71 is provided. The outer layer covering portion 71 is also preferably covered with the shield conductor 41 so as not to be in close contact with the shield conductor 41 by using a tube made of an insulating resin or the like, and is movable relative to the shield conductor 41 in the longitudinal direction. Put it in a state.

  FIG. 12 is a plan view showing another example of the flat conductor 21. Since the flat conductor 21 only needs to have a constant arrangement pitch p1 of the terminal portions 22, as shown in this figure, the width of the main body side portion 26 other than the terminal portions 22 of the flat conductor 21 should be wider than that. Can do.

  That is, the shielded flat cable 11 has a characteristic that it is thin and flexible, and the flat conductor 21 is preferably thin in order to take advantage of this characteristic of good flexibility. However, in order to obtain a necessary cross-sectional area, the width of the flat conductor 21 must be increased.

  In the rectangular conductor 21 of FIG. 12, the terminal portion 22 formed at the terminal is set to be narrower than the main body side portion 26 so as to correspond to the connecting portion 61 (see FIG. 2). The arrangement pitch p1 is set to be a predetermined pitch.

  FIG. 13 shows an example in which the arrangement direction of the flat conductors 21 is changed. FIG. 13A shows a state viewed from a direction perpendicular to the longitudinal direction, and FIG. 13B shows a state viewed from the end face direction of the terminal. That is, the main body side portion 26 of the flat conductor 21 is formed wide so that a desired cross-sectional area can be obtained, and a terminal portion 22 narrower than the main body side portion 26 is formed at the terminal. And it superposes | stacks diagonally in parallel so that the edge part of the flat conductor 21 may overlap. Of course, the rectangular conductors 21 are insulated from each other. In this example, each flat conductor 21 has an individual insulating coating 31.

  By arranging the flat conductors 21 in this way, the arrangement pitch p1 of the terminal portions 22 can be made as desired.

  FIG. 14 shows an example in which the rectangular conductors 21 that are individually covered with insulation are overlapped so as to overlap in the entire width direction. In other words, the rectangular conductors 21 are arranged in parallel in the thickness direction at intervals. FIG. 14A shows a state viewed from the direction perpendicular to the longitudinal direction, and FIG. 14B shows a state viewed from the end face direction of the terminal.

  Since polymerization occurs in the entire width direction, the terminal portion 22 is formed so as not to overlap each other in a portion of the wide body side portion 26 in the width direction of the terminal. In the example of FIG. 14, the terminal portions 22 of the three rectangular conductors 21 are formed so as to be arranged obliquely when viewed from the end surface direction.

  By arranging the flat conductors 21 in this way, the arrangement pitch p1 of the terminal portions 22 can be made as desired.

  As described above, even when the wide rectangular conductor 21 is used, the pitch p2 of the connecting portion 61 (see FIG. 2) can be accommodated. In addition, since the flat conductor 21 can be formed thinner, good flexibility can be obtained.

  In addition, when the flat conductor 21 becomes thin and a fall of intensity | strength is considered, it is good to reinforce the terminal part 22 as shown in FIG.15, FIG.16.

  The reinforcing structure of the terminal portion 22 in FIG. 15 is a structure in which the reinforcing plate 27 is overlapped from the terminal portion 22 and its base portion to the end portion of the main body side portion 26. The reinforcing plate 27 is made of, for example, a metal plate and is polymerized by welding or the like. The thickness of the reinforcing plate is preferably about 0.5 mm. In the figure, 22b is a chamfer.

  At this time, as shown by the phantom line, the insulating coating 31 may cover, for example, an intermediate portion in the longitudinal direction of the reinforcing plate 27 so as to cover the reinforcing plate 27. In the figure, 31b is a notch for securing a creepage distance.

  The reinforcing structure of the terminal portion 22 in FIG. 16 is a structure in which a mold 28 is provided from the base portion of the terminal portion 22 to the end portion of the main body side portion 26. The mold 28 is provided so as to be applied to the end portion of the insulating coating 31. Thus, with the structure reinforced with the mold 28, the arrangement pitch of the terminal portions 22 can be more positively maintained.

  In addition, in order to obtain insulation performance, you may insulate the terminal of the shield flat cable 11 by an outsert mold, for example. The pitch accuracy of the terminal portion 22 of the flat conductor 21 is stable, and the insulation distance can be set freely. Of course, it is desirable that the creeping distance be secured so that the insulation can be performed without depending on the insulation by the mold.

  Next, the connection structure of the shield flat cable will be described.

  The shielded flat cable 11 having the above configuration is connected to the device as follows.

  FIG. 17 is a cross-sectional view showing an example in which connection is made between the casing main body 91 and the lid 92 of the device. A wiring body (not shown), for example, a printed board, a bus bar, a terminal block, or the like is provided in the casing body 91 of the apparatus. And a shield presser fitting 94 is formed thereon. The shield retainer 94 has a groove-shaped cross section as shown in the illustrated example or a highly rigid cross-sectional shape such as an I-type or T-type, and is provided with a hole or notch (not shown) at the end. Further, it is formed so that it can be fixed to the casing body 91 with screws, scissors or the like (not shown). In addition, sealing grooves 95 and 96 are formed at positions outside the shield connection portion 93 at the opening edge 91a of the housing main body 91 and at a portion of the lid body 92 facing the opening.

  That is, at the time of connection, the terminal portion 22 of the flat conductor 21 of the shield flat cable 11 is attached to the wiring body in the device with the waterproof packing 97 inserted on the outer layer covering portion 71 of the shield flat cable 11. Secure with screws 98. Then, the shield conductor exposed portion 44, which appears with a sufficient insulation distance from the live part, is sandwiched between the shield connection part 93 and the shield retainer 94. Since the flat cable 11 is mechanically and electrically connected by the clamping, the flat cable 11 is firmly fixed to the device and the shield conductor 41 forms an earth circuit.

  Thereafter, the waterproof packing 97 is fitted into the sealing groove 95 of the housing main body 91, the lid 92 is closed, and the waterproof packing 97 is sandwiched. With this waterproof packing 97, the inside of the device can be waterproofed. The waterproof packing 97 may also be used as the waterproof packing between the housing body 91 and the lid 92. Further, a waterproof packing between the housing main body 91 and the lid 92 may be used.

  As described above, the terminal portion 22 of the flat conductor 21 can be used as a connector without using a special connector or terminal, and can be easily and firmly connected.

  FIG. 18 shows an example of waterproofing by inserting a waterproof packing 97 into an insertion hole 99 provided in the casing body 91 of the device. That is, the insertion hole 99 penetrating inward and outward is provided in a portion of the housing main body 91 that leads to the upper side of the shield connection portion 93. A stepped portion 99a is provided at the outer end of the insertion hole 99 to provide a sealing space into which the waterproof packing 97 is inserted. Further, a packing presser cover 91b for pressing the waterproof packing 97 is provided outside the stepped portion 99a.

  When the shield flat cable 11 is connected, the shield flat cable 11 with the waterproof packing 97 inserted is inserted into the insertion hole 99 in the same manner as described above, the flat conductor 21 is connected to the wiring body, and the shield holding metal 94 is used for shielding. The conductor exposed portion 44 is fixed to the shield connecting portion 93. Thereafter, the waterproof packing 97 is inserted into the stepped portion 99a and fixed with a packing presser lid 91b.

  Even in this way, waterproofing in the device can be achieved.

  In addition to the connection structure shown in FIGS. 17 and 18, for example, a metal fitting (not shown) is attached in advance to the end of the shield flat cable, a shield conductor is connected to the metal fitting, and a waterproof packing is temporarily fixed to the metal fitting. For example, by simply attaching the metal fitting to a hole of a device such as a motor, the shield conductor can be connected and waterproof sealed at the same time, and thereafter, the terminal of the flat conductor can be simply attached to the terminal block of the device. According to this, the connection work can be simplified. In addition, it can also be set as the structure by which a male-female connector is fitted simultaneously with the attachment of the said metal fitting.

  When relative movement or relative vibration occurs between the devices connected by the shield flat cable 11 connected as described above, for example, when vehicle running vibration or torque vibration occurs, the shield flat cable It is preferable that the cables are arranged so as to absorb 11 vibrations. It is also preferable to route the shield flat cable 11 so as to absorb a dimensional error when the shield flat cable 11 is attached to the device.

  19 and 20 show an example for that purpose. FIG. 19 shows an example in which the shield flat cable 11 is bent into a substantially S shape and attached. On both sides of the S-shaped portion 11a of the shielded flat cable, a fixed terminal 12 is provided for holding the portion. The fixed terminal 12 has an S-shaped shielded flat cable sandwiched from the outside. A pressing plate 13 is provided.

  Depending on the state of the shield flat cable 11, the presser plate 13 may have a linear shape as shown in FIG. 19A or a warped shape as shown in FIG. 19B. The curvature of the curvature of the portion 11a bent into the S shape is preferably about 800 to 1200 times the thickness of the flat conductor 21.

  When the shield flat cable 11 is attached in this manner, even if both side portions are displaced relative to each other, it can be absorbed, so that vibration, dimensional errors, and the like can be flexibly absorbed.

  FIG. 20 shows an example in which the shield flat cable 11 is formed into a corrugated shape. Even if the configuration of the shielded flat cable 11 itself is configured in this way, it can be absorbed when both side portions are displaced relative to each other, so that vibration, dimensional errors, and the like can be flexibly absorbed.

  You may combine shaping | molding into this corrugation and arranging in S shape as mentioned above.

  As described above, with the shield flat cable 11, it is easy to process the shield flat cable 11 for connection or the like for removing the insulation coating 31 or securing an insulation distance. Since it is not necessary to use a special tool, the processing can be performed inexpensively and safely. Moreover, although it is a peculiar structure, manufacture can be performed easily.

  In connection with the connecting portion 61, the terminal portion 22 of the flat conductor 21 can be directly screwed to the screw 98, so that a connector is not required, and space saving, particularly reduction in thickness can be achieved. Further, since it is not necessary to solder the terminal portion 22 of the flat conductor 21, the connection work is simple. In addition, since the shield conductor 41 is connected to the ground, the shield performance can be ensured, and a simple connection that can simultaneously obtain waterproofness is possible.

  With respect to this waterproofing, since the waterproofing is performed outside the shield conductor 41, the deterioration of the shield conductor 41 can be suppressed, and the low-frequency electromagnetic shielding properties can be prevented from being deteriorated as in the prior art.

  Further, in the connected state, the arrangement pitch p1 of the end portions 22 of the rectangular conductor 21 is the same as the pitch p2 of the connection portions 61. Therefore, in the conventional cable, the braided wire of the end portion is greatly widened and there is a gap. Such inconvenience can be avoided while the leakage of electromagnetic waves at a frequency becomes large.

  Moreover, since the shield conductor 41 covers a plurality of flat conductors 21 at once, the cost can be reduced as compared with the case of covering each of them. Since the connector is not required as described above and the processing is easy, the cost can be reduced throughout the manufacturing, processing, and connection operations as well as the reduction of the material cost and the processing cost.

  Furthermore, since vibration can be absorbed by wiring or molding, it is possible to prevent a load from being applied to the connecting portion, and the shield flat cable 11 can be easily handled.

In correspondence between the configuration of the present invention and the configuration of the one aspect,
The sealing material of the present invention corresponds to the waterproof packing 97,
The present invention is not limited to the above-described configuration, and other forms can be adopted.

DESCRIPTION OF SYMBOLS 11 ... Shield flat cable 21 ... Flat conductor 22 ... Terminal part 23 ... Through-hole 24 ... Square round part 25 ... Eyelet 31 ... Insulation coating 31a ... Terminal surface 32 ... Terminal part 41 ... Shield conductor 41a ... Terminal surface 44 ... Shield conductor exposure Part 61 ... Connection part 71 ... Outer layer covering part 97 ... Waterproof packing p1 ... Arrangement pitch of flat conductor end parts p2 ... Pitch of connection part

Claims (10)

Flat conductors arranged in parallel at intervals, and an insulation coating covering the flat conductors;
A shielded flat cable having a shield conductor for electromagnetic shielding coated on the insulating coating,
The arrangement pitch of the terminal portions of the rectangular conductor is set equal to the pitch of the connection portion to be connected,
A through hole for connection is formed in the terminal portion,
The shield flat cable in which the shield conductor is composed of a metal foil covering the entire circumference of the plurality of flat rectangular conductors. The shield flat cable according to claim 1, wherein the through hole is formed by attaching eyelets. The shielded flat cable according to claim 1 or 2, wherein the end portion of the flat conductor is formed with a rounded corner. The end surface of the insulating coating is formed at a position exposing the end portion of the flat conductor,
The shield flat cable according to any one of claims 1 to 3, wherein an end surface of the shield conductor is formed at a position exposing the end portion of the insulating coating. The shield flat cable according to any one of claims 1 to 4, wherein the flat conductor and the insulating coating are relatively movable in a longitudinal direction of the flat conductor. The shielded flat cable according to any one of claims 1 to 5, wherein the insulating coating and the shield conductor are relatively movable in a longitudinal direction of the insulating coating. Flat conductors arranged in parallel at intervals, and an insulation coating covering the flat conductors;
The rectangular conductor used in a shielded flat cable having a shield conductor for electromagnetic shielding coated on the insulating coating,
A rectangular conductor in which the insulating coating is relatively movable in the longitudinal direction of the rectangular conductor. The flat conductor according to claim 7, wherein a through hole for connection to a connection part to be connected is formed in the terminal part. The terminal portion of the flat conductor of the shielded flat cable according to any one of claims 1 to 6, wherein the terminal portion of the flat conductor, the insulating coating, and the shield conductor are exposed in order from the terminal side. While connecting to the connection part,
A shield flat cable connection structure in which the exposed shield conductor exposed portion of the shield conductor is grounded. An outer layer covering portion is provided on the side opposite to the terminal side of the shield conductor exposed portion,
The shield flat cable connection structure according to claim 9, wherein a sealing material is held on an outer periphery of the outer layer covering portion.

Images