JP2012001096A - Connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector which saves a trouble of peeling off a conductor of an insulated trolley line and prevents connection failure between a terminal and the conductor of the insulated trolley line.SOLUTION: Terminals 16a to 16c connectable to power lines 3 include contact portions 38 to be in contact with an exposed face 12 of a conductor 8 which is exposed through groove openings 7 of sheaths 10a to 10c of an insulated trolley line 2. A pressing member 17 is provided to directly press the contact portions 38 to the conductor 8 from a side opposite from the conductor 8.

Description

  The present invention relates to a connector for electrically connecting an insulated trolley wire and a power line.

  Conventionally, as shown in FIG. 15, an insulated trolley wire 2 is used to feed power to a mobile device 6 such as a hoist crane via a current collector 11. A general insulating trolley wire 2 is provided with a conductor in a groove of a sheath portion formed in a resin insulating material, and the conductor is exposed from a groove opening of the sheath portion.

  Reference numeral 1 ′ is a connector for electrically connecting the insulated trolley wire to the power line on the primary side. As this connector, for example, the one shown in Patent Document 1 is known. In this connector, the insulating material at the end of the insulating trolley wire is cut out by using a drill tool or the like to expose the conductor, and the terminal plate is fixed to the conductor by sandwiching the exposed conductor with the terminal plate and screws. .

  Patent Document 2 discloses a technique for connecting an insulating trolley wire to a power line without performing end machining of the insulating trolley wire. In Patent Document 2, an insulating trolley wire is inserted between the jaw portions facing each other of the power supply terminal, and the first jaw portion is applied to the exposed conductor surface exposed from the sheath portion of the insulating trolley wire. And the conductor is being fixed with respect to the 1st jaw part by pressing a sheath part with the volt | bolt screwed into the 2nd jaw part.

JP 2001-334847 A JP-A-8-175231

  By the way, in Patent Document 1, it is necessary to process the end portion of the insulated trolley wire, which is troublesome.

  Moreover, in patent document 2, a bolt presses a sheath part partially and a conductor is pressed to the 1st jaw part side via this sheath part. For this reason, the frictional force between the conductor and the first jaw portion is difficult to stabilize, and as a result, there is a risk of poor contact between the conductor and the power supply terminal.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a connector that can save the trouble of stripping the conductor of the insulated trolley wire and prevent contact failure between the terminal and the conductor. .

  In order to solve the above problems, the connector of the present invention is provided with a contact portion that contacts an exposed surface of a conductor exposed from a groove opening of a sheath portion of an insulated trolley wire at a terminal to which a power line can be connected. A pressing member for directly pressing the conductor from the side opposite to the conductor is provided.

  The sheath includes a contact portion that contacts the outer surface of the portion pressed by the pressing member via the contact portion and the conductor, and a facing portion that is opposed to the contact portion and is integral with the contact portion. The pressing member is preferably provided on the facing portion.

  In addition, it is preferable that a protrusion with a sharp tip protruding toward the sheath portion is formed on the contact portion.

  Moreover, it is preferable that the pressing member includes a bolt screwed into the facing portion from the side opposite to the contact portion, and a spring washer is provided between the head of the bolt and the facing portion.

  In addition, a fixing member arrangement portion in which a fixing member having the abutting portion and the opposed portion is arranged is provided, and a receiving surface portion that receives the fixing member is provided on the fixing member arrangement portion so as to face the outside in the longitudinal direction of the sheath portion. It is preferable.

  Moreover, it is preferable that a plurality of the fixing members are provided, and a fixing member arrangement portion provided with the receiving surface portion is provided for each fixing member.

  In the present invention, it is possible to save the trouble of stripping the conductor of the insulated trolley wire and to prevent contact failure between the terminal and the conductor.

It is principal part sectional drawing of the connector of embodiment of this invention. It is a perspective view which shows the state which built the insulated trolley wire using the connector. The main body is shown, (a) is a perspective view seen from the bottom side, (b) is a horizontal sectional view. It is a perspective view of a fixing member. It is a perspective view which shows a mode that the insulation trolley wire is inserted in a main body. The state which connected the insulated trolley wire to the main body is shown, (a) is a bottom view, (b) is the perspective view seen from the lower side. It is the perspective view seen from the upper side which shows the state which connected the power line to the terminal provided in the main body. It is an exploded perspective view of an insulating trolley wire, a fixing member provided with a pressing member, and a terminal. It is a rear view which shows the connector of the construction state which abbreviate | omitted illustration of the long volt | bolt and the cover. It is a perspective view which shows the state which hold | maintained the insulated trolley wire by the main body. It is a notch sectional view when an insulation trolley wire is held with a main part. It is a perspective view which shows the mode before the process of the edge part of an insulated trolley wire, and a process after a process. It is a perspective view which shows the state which attached all the terminals with the electric wire connection part facing the same direction. It is a side view which shows a mode that the electric power line was pulled out from the terminal to the vertical direction. It is a perspective view which shows the construction state of the conventional connector.

  The present invention will be described with reference to the accompanying drawings. In the following, description may be made with reference to FIG. In the following description of each configuration, the direction in the construction state will be described as a reference, and the longitudinal direction of the insulating trolley wire 2 will be described as the front-rear direction, and the width direction of the insulating trolley wire 2 will be described as the left-right direction (lateral direction).

  The connector 1 of this embodiment connects the insulated trolley wire 2 to the power line 3 consisting of a cable as shown in FIG. 2, and is used in a power supply system that supplies power to the mobile device 6 (see FIG. 15).

  As shown in FIG. 15, the insulated trolley wire 2 supplies power to the moving device 6 formed of a hoist crane via the current collector 11. Note that the power supply target of the insulated trolley wire 2 is not limited to the hoist crane, and the present invention may be applied to other fields such as an automatic warehouse and a multistory parking lot.

  The insulating trolley wire 2 includes a plurality of strip-shaped conductors 8 whose thickness direction is the vertical direction as shown in the upper diagram of FIG. 12 and a resin insulating material 9 that houses these conductors 8.

  The insulating material 9 is formed with a plurality of substantially U-shaped sheath portions 10 a to 10 c that open downward (three rows in the illustrated example) side by side, and each sheath portion 10 a to 10 c extends in the longitudinal direction of the insulating material 9. Is formed.

  A conductor 8 is provided in the longitudinal direction in a state where the upper surface is in contact with the bottom 37 of the sheath portions 10a to 10c in a groove opened downward in each sheath portion 10a to 10c. Each conductor 8 is provided at a constant pitch in the left-right direction, and the central portion in the width direction of the lower surface is an exposed surface exposed from the groove opening 7 of the sheath portions 10a to 10c. Hereinafter, this exposed surface is referred to as a conductor exposed surface 12.

  The connector 1 has a function of holding the end of the insulated trolley wire 2 in addition to the function of electrically connecting the insulated trolley wire 2 to the power line 3, and is used as an insulator as shown in FIG.

  The connector 1 includes a main body 14 and a cover 18 attached to the main body 14. As shown in FIG. 10, the main body 14 is provided with fixing members 15a to 15c for the corresponding sheath portions 10a to 10c, and the fixing members 15a to 15c are provided with pressing members 17 made of bolts. The main body 14 is provided with terminals 16a to 16c for each of the fixing members 15a to 15c.

  As shown in FIG. 5, the main body 14 is formed with an insertion recess 19 that opens to the front on the insulating trolley wire 2 side. The end of the insulating trolley wire 2 is inserted into the insertion recess 19 from the front.

  As shown in FIG. 3B, the portion of the insertion recess 19 excluding the front end is composed of a plurality of holes 22a to 22c formed side by side. The holes 22a to 22c are formed in the same number as the sheath portions 10a to 10c of the insulating trolley wire 2, and the corresponding sheath portions 10a to 10c of the insulating trolley wire 2 inserted into the insertion recess 19 are arranged in the holes 22a to 22c. Is done.

  A part of each hole 22a-22c in the front-rear direction is a fixing member arrangement part 23a-23c having a larger cross-sectional area than the other part. Portions adjacent to the front of the fixing member arrangement portions 23a to 23c of the holes 22a to 22c are referred to as front hole portions 25a to 25c. Steps are formed between the inner peripheral surfaces of the fixing member arrangement portions 23a to 23c in the holes 22a to 22c and the inner peripheral surfaces of the front hole portions 25a to 25c that are slightly smaller than the inner peripheral surfaces. The steps over the front edges of the fixing member placement portions 23a to 23c face the rear side, that is, the outside in the longitudinal direction of the sheath portions 10a to 10c, and constitute the receiving surface portion 26 with which the front end surfaces of the fixing members 15a to 15c abut. .

  A tool insertion port 28 is formed on the lower surface of each of the fixing member arrangement portions 23a to 23c. Among the fixing member arrangement portions 23a to 23c, the fixing member arrangement portions 23a and 23c located on both outer sides in the left-right direction are located at the rear ends of the holes 22a and 22c, and are arranged on the rear surfaces of the fixing member arrangement portions 23a and 23c. The terminal outlets 29a and 29c are respectively formed. The fixing member placement portion 23b located at the center in the left-right direction is located in the middle of the hole 22b in the front-rear direction. If a portion of the hole 22b adjacent to the rear of the fixing member arrangement portion 23b is a rear hole portion 27, a terminal outlet port 29b is formed on the lower surface of the rear hole portion 27. The rear end of the hole 22 b is closed by a contact wall 30 formed in the main body 14.

  The fixing members 15a to 15c are placed on the left and right side edges of the tool insertion port 28 in the state where the fixing members 15a to 15c are positioned in the left and right directions, and the front end surfaces of the fixing members 15a to 15c are illustrated in FIG. 11 is opposed to the receiving surface portion 26.

  Each of the fixing members 15a to 15c is made of metal, and is formed in a vertically long rectangular tube opening in the front-rear direction as shown in FIG. 4, and includes upper and lower pieces 35a and 35b and left and right pieces 35c and 35d. . A plurality of screw holes 31 penetrating vertically are formed in the lower piece portion 35b of each fixing member 15a to 15c in the front-rear direction.

  As shown in FIG. 1, the pressing member 17 is screwed into the screw holes 31 of the fixing members 15 a to 15 c from below via a spring washer 44, and the head 43 of the pressing member 17 is lowered downward via the tool insertion port 28. Exposed.

  A central portion in the width direction of the upper piece portion 35a of the fixing members 15a to 15c is a contact portion 36 protruding downward. That is, the lower piece portion 35 b described above constitutes the facing portion 20 that faces the contact portion 36, and the facing portion 20 is formed integrally with the contact portion 36. Although the fixing members 15a to 15c of the present embodiment have a rectangular frame shape in cross section, the fixing members 15a to 15c include an abutting portion 36 with which the sheath portions 10a to 10c are abutted and a lower piece portion 35 opposite to the abutting portion 36. What is necessary is just to be integrally formed, for example, a cross-sectional U-shape may be sufficient.

  A plurality of metal projections 32 projecting downward are provided on the lower surface of the contact portion 36 in the front-rear direction, and these projections 32 are all provided at positions facing the screw holes 31. Each protrusion 32 is formed in a conical shape with a sharp tip.

  Each terminal 16a-16c is comprised with the terminal board of the same same shape. As shown in FIG. 8, each of the terminals 16 a to 16 c is formed of an L-shaped terminal plate whose thickness direction is the left-right direction, and constitutes a contact portion 38 in which one piece protruding forward contacts the conductor exposed surface 12. The other piece protruding at a right angle from the rear end portion of the contact portion 38 constitutes a power line connecting portion 39. A hole 42 for a bolt 41 for attaching an end of the power line 3 is opened in the power line connecting portion 39.

  As shown in FIG. 3, insertion holes 45 penetrating in the front-rear direction are formed on both sides of the insertion recess 19 of the main body 14. As shown in FIG. 6, long long bolts 46 are inserted in the respective insertion holes 45 in the front and rear direction, and each long bolt 46 is fixed to the main body 14 by sandwiching the main body 14 with two nuts 47 provided on the front side thereof. Is done.

  In order to hold the end of the insulated trolley wire 2 with the connector 1, for example, the following is performed.

  First, the fixing members 15a to 15c in which the contact portions 38 of the terminals 16a to 16c are inserted from the rear are arranged in the corresponding fixing member arrangement portions 23a to 23c. At this time, the contact portions 38 of the terminals 16a to 16c are arranged between the contact portions 36 of the fixing members 15a to 15c and the tip surfaces of the pressing members 17 screwed into the screw holes 31 of the fixing members 15a to 15c. . Further, the terminals 16a and 16c lead out the power line connecting portion 39 side from the terminal outlets 29a and 29c to the rear of the main body 14 so that the power line connecting portion 39 protrudes upward or downward. Further, the terminal 16b causes the power line connecting portion 39 to protrude downward from the terminal 14 from the terminal outlet 29b.

  Next, the end of the insulating trolley wire 2 is inserted into the insertion recess 19 of the main body 14 as shown in FIG. The insulated trolley wire 2 has portions between the sheath portions 10a to 10c at the end of the insulated trolley wire 2 so that the sheath portions 10a to 10c can be inserted into the corresponding holes 22a to 22c in advance as shown in the lower diagram of FIG. It has been excised. The insulated trolley wire 2 is inserted into the insertion recess 19 until the rear end surface of the sheath portion 10b comes into contact with the front surface of the contact wall 30 as shown in FIG. 11, whereby the sheath portions 10a to 10c and the conductor 8 are fixed to each other. It arrange | positions between the contact part 38 and the contact part 36 which are arrange | positioned in the members 15a-15c.

  Next, the head 43 of the pressing member 17 (bolt) screwed into each screw hole 31 of the fixing members 15a to 15c is rotated in the direction in which the pressing member 17 approaches the contact portion 38 side, and each pressing is performed as shown in FIG. The contact portion 38 is pressed toward the conductor 8 at the tip surface of the member 17. The operation of the pressing member 17 is performed using a tool such as a wrench in which the head 43 is inserted from the tool insertion port 28.

  The operation of screwing the pressing member 17 is performed until the spring washer 44 compressed between the head portion 43 of the pressing member 17 and the lower surface of the facing portion 20 becomes flat as shown in FIG. 17 is screwed in a predetermined amount.

  When the pressing member 17 is screwed in this way, the contact portion 38 is pressed against the conductor exposed surface 12, and the bottom portions of the sheath portions 10a to 10c pressed by the contact portion 38 via the conductor 8 toward the contact portion 36. 37 contacts the contact portion 36 of the fixing members 15a to 15c. Further, each protrusion 32 provided on the contact part 36 penetrates the conductor 8 by penetrating the bottom part 37 of the resin sheath parts 10a to 10c.

  As described above, the contact portions 38 of the terminals 16a to 16c are sandwiched and fixed between the corresponding conductors 8 and the front end surfaces of the pressing members 17 provided on the fixing members 15a to 15c, and correspond to the terminals 16a to 16c. The conductor 8 is electrically connected. Further, the conductor 8 and the bottom portion 37 of the sheath portions 10a to 10c are sandwiched and fixed between the contact portion 38 and the contact portion 36. As a result, the end portion of the insulated trolley wire 2 is fixed to the main body 14. .

  The main body 14 holding the end portion of the insulating trolley wire 2 is connected in a state of being pulled to the construction material 5 such as a beam using a coil spring 13 as shown in FIG. In order to connect the main body 14 to the construction material 5, the rear side of the long bolt 46 fixed on both sides of the main body 14 is passed through the construction material 5 such as a beam, and the rear portion of the long bolt 46 from the construction material 5. Is passed through the coil spring 13. A nut 48 is attached to each long bolt 46, and the front end of the coil spring 13 is connected to the rear surface of the construction material 5 in a state where the rear end of the coil spring 13 is in contact with the nut 48 provided on the long bolt 46. Elastically contact with. Thereby, the main body 14 and the insulated trolley wire 2 held by the main body 14 are pulled to the rear side which is the construction material 5 side. Similarly, the main body 14 provided at the opposite end of the insulated trolley wire 2 is also connected to the construction material 5 so that the insulation trolley wire 2 is installed between the construction materials 5 in a state where the insulation trolley wire 2 is pulled on both sides in the longitudinal direction. Is done. The tension of the insulated trolley wire 2 after installation is adjusted by moving the nut 48 in the front-rear direction with respect to each long bolt 46 to adjust the compression amount of the coil spring 13.

  After the insulated trolley wire 2 is installed, the connection terminals 40 provided at the ends of the power lines 3 are connected to the power line connection portions 39 of the terminals 16 a to 16 c protruding from the main body 14. This connection is performed by applying the connection terminal 40 to the side surface of the power line connection portion 39 protruding upward or downward from the main body 14 and crimping the connection terminal 40 and the bolt 41 passed through the hole 42 of the power line connection portion 39.

  Here, since the power line connection part 39 of each terminal 16a-16c protrudes from the main body 14, the drawing-out direction of the power line 3 from the power line connection part 39 is set to the front-back direction as shown in FIG. 7, or as shown in FIG. Or up and down. That is, the degree of freedom in the direction in which the power line 3 is drawn out is high, and it can be used in various construction environments.

  Further, the protruding direction of the power line connecting portion 39 of the terminals 16a and 16c can be selected either up or down by changing the direction when the terminals 16a and 16c are electrically connected to the insulated trolley wire 2. Therefore, for example, as shown in FIG. 6B, the power line connecting portions 39 of the terminals 16a and 16c on both sides protrude upward and the power line connecting portion 39 of the central terminal 16b protrudes downward, for example, so The vertical position of the power line connecting portion 39 of the terminals 16a to 16c can be shifted. If it does in this way, when the power line 3 connected to the power line connection part 39 of each terminal 16 is thick, the power lines 3 connected to the adjacent terminals 16a to 16c can be prevented from interfering with each other. Can be realized. Moreover, as shown in FIG. 13, the power line connection part 39 of all the terminals 16a-16c can also protrude downward, In this case, the operation | work which connects the power line 3 to the power line connection part 39 can be performed only from the lower side. This improves workability.

  Further, as shown in FIG. 6B, the fixing members 15 a to 15 c are arranged at positions shifted in the front-rear direction, so that the power line connecting portions 39 of the terminals 16 a to 16 c are also shifted in the front-rear direction. For this reason, interference between the power lines 3 connected to the power line connecting portions 39 of the respective terminals 16a to 16c is less likely to occur.

  And after connecting the power line 3 to the power line connection part 39 of each terminal 16a-16c as mentioned above, the cover 18 is attached to the main body 14 so that attachment or detachment is possible as shown in FIG. The cover 18 covers the terminals 16a to 16c, the fixing members 15a to 15c, the portions of the pressing members 17 exposed from the main body 14, and the connection terminals 40 of the power line 3 connected to the terminals 16a to 16c.

  The connector 1 of the present embodiment brings the contact portion 38 of the terminals 16a to 16c to which the power line 3 can be connected into contact with the exposed conductor surface 12 exposed from the groove opening 7 of the sheath portions 10a to 10c of the insulating trolley wire 2. The conductor 8 and the terminals 16a to 16c can be electrically connected. For this reason, it is not necessary to perform the operation | work which removes the insulating material 9 of the insulated trolley wire 2 and peels off the conductor 8 like the past, and can electrically connect the insulated trolley wire 2 to the terminals 16a-16c easily.

  The pressing member 17 is positioned on the opposite side of the conductor 8 with the contact portion 38 interposed therebetween, and the contact portion 38 is directly pressed toward the conductor 8 side from here to press the contact portion 38 against the conductor exposed surface 12. In this case, since the sheath portions 10a to 10c do not exist between the pressing member 17 and the conductor exposed surface 12, the contact portion 38 can be pressed against the conductor exposed surface 12 with an appropriate force. Therefore, the frictional force generated between the conductor exposed surface 12 and the contact portion 38 can be stabilized, and poor contact between the conductor 8 and the terminals 16a to 16c can be prevented.

  In addition, a contact portion 36 that contacts the outer surface of the portion pressed by the pressing member 17 via the contact portion 38 and the conductor 8 at the bottom portion 37 of the sheath portions 10a to 10c is provided. For this reason, the conductor 8 and the bottom portion 37 of the sheath portions 10 a to 10 c are sandwiched between the contact portion 38 and the contact portion 36 pressed by the pressing member 17, and the contact portion 38 can be pressed against the conductor 8 with a strong force. Further, since the facing portion 20 facing the contact portion 36 is formed integrally with the contact portion 36, and the pressing member 17 is provided on the facing portion 20, the number of parts can be reduced and the cost of the connector 1 can be reduced. .

  Further, the contact portion 36 is formed with a protrusion 32 having a sharp tip protruding toward the sheath portions 10a to 10c. For this reason, the protrusion 32 is made to bite into the bottom part 37 and the conductor 8 of the sheath parts 10a to 10c pressed to the contact part 36 side by the pressing member 17 via the contact part 38 and the conductor 8, and the sheath parts 10a to 10c and The conductor 8 can be firmly held against the abutting portion 36. In particular, when tension is applied to the insulated trolley wire 2, the sheath portions 10a to 10c are difficult to be removed from the fixing members 15a to 15c, which is effective.

  The pressing member 17 includes a bolt 41 screwed into the facing portion 20 from the side opposite to the contact portion 36, and a spring washer 44 is provided between the head 43 of the bolt 41 and the facing portion 20. By doing so, when the bolt 41 is screwed and the contact portion 38 is pressed, the compression state of the spring washer 44 is visually recognized, so that the screw portion of the bolt 41 is fixed and the contact portion 38 is substantially omitted. The conductor 8 can be pressed with a constant force. Accordingly, it is possible to prevent the connection failure between the terminals 16a to 16c and the conductor 8 more reliably.

  Further, the fixing member placement portions 23a to 23c are provided with receiving surface portions 26 that face the outer sides in the longitudinal direction of the sheath portions 10a to 10c and receive the fixing members 15a to 15c. For this reason, when tension is applied to the sheath portions 10a to 10c when the insulated trolley wire 2 is installed or when the mobile device 6 is used, the tension is brought into contact with the front end surfaces of the fixing members 15a to 15c. It can be received by the receiving surface portion 26. Moreover, since the conductor 8 and the bottom part 37 of the sheath parts 10a to 10c can be sandwiched between the contact part 38 and the contact part 36 pressed by the pressing member 17 as described above, the insulated trolley wire 2 can be held. Thus, the connector 1 can be used as an insulator.

  Moreover, the fixing member 15a-15c provided with the pressing member 17 is provided with two or more, and the fixing member arrangement | positioning part 23a-23c provided with the receiving surface part 26 is provided for every fixing member 15a-15c. For this reason, the tension applied to the insulated trolley wire 2 having the plurality of sheath portions 10a to 10c can be received by the receiving surface portions 26 provided in the respective fixing member arrangement portions 23a to 23c, and the reliability and safety with respect to the tension stoppers can be obtained. improves.

3 Power line 7 Groove opening 8 Conductor 10a Sheath part 10b Sheath part 10c Sheath part 12 Exposed surface 16a Terminal 16b Terminal 16c Terminal 17 Pushing member 38 Contact part

Claims (6)

  A contact member that is in contact with the exposed surface of the conductor exposed from the groove opening of the sheath portion of the insulating trolley wire is provided on the terminal to which the power line can be connected, and a pressing member that directly presses the contact portion from the opposite side to the conductor side A connector characterized in that is provided.   A contact portion that contacts the outer surface of the portion pressed by the pressing member via the contact portion and the conductor in the sheath portion; and a facing portion that is opposed to the contact portion and is integral with the contact portion. The connector according to claim 1, wherein the pressing member is provided in the facing portion.   The connector according to claim 2, wherein a protrusion with a sharp tip protruding toward the sheath portion is formed on the contact portion.   The said pressing member consists of a volt | bolt screwed into the said opposing part from the opposite side to the said contact part, The spring washer was provided between the head part and this opposing part of this bolt, The Claim 2 or Claim characterized by the above-mentioned. 3. The connection tool according to 3.   A fixing member arrangement portion in which a fixing member having an abutting portion and an opposing portion is arranged is provided, and a receiving surface portion is provided on the fixing member arrangement portion so as to face the outside in the longitudinal direction of the sheath portion. The connector according to any one of claims 2 to 4.   The connector according to claim 5, wherein a plurality of the fixing members are provided, and a fixing member arrangement portion provided with the receiving surface portion is provided for each fixing member.

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