JP2013252781A - Insulated trolley wire connection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insulated trolley wire connection device in which conduction of a connected conductor is secured and the connected conductor is readily inserted.SOLUTION: An insulated trolley wire connection device includes: a conductive joint 40 making conductive with a conductor of two connected insulated trolley wires; a pressing member 5 pressing the conductor to the conductive joint 40; and a joint body 31 holding the conductive joint 40 and the pressing member 5. The pressing member 5 includes a pressure contact part 6 directly contacting with the conductor, and an elastic member 7 which is disposed between a pressure contact member supporting surface 41 formed in the joint body 31 and the pressure contact part 6 and presses the pressure contact part 6. Regarding the elastic member 7, the shorter a distance of the pressure contact part 6 from a pressure contact member supporting surface 4 is, the larger an elastic coefficient is either gradually or continuously.

Description

  The present invention relates to an insulated trolley wire connecting device in an insulated trolley wire current collector.

  Conventionally, an insulated trolley wire current collector has been used (see, for example, Patent Document 1). The insulated trolley wire current collector is composed of an insulated trolley wire provided on a construction material such as a ceiling and a current collector provided on a moving load such as a crane or a hoist. The insulated trolley wire is provided with a conductor at the bottom of the groove formed in the insulating frame, and electricity is supplied from the conductor to the load that moves through the current collector when the current collector is in sliding contact with the conductor of the insulated trolley wire. The The insulated trolley wires are arranged along the load movement path, and normally, not only one insulated trolley wire but also a plurality of insulated trolley wires are connected to form a continuous insulated trolley wire as a whole. And the insulated trolley wire connection apparatus is used for the part to which the some insulated trolley wire is connected.

Japanese Patent Laid-Open No. 4-108044

  As shown in FIG. 8, the insulated trolley wire connecting device 3 includes a conductor joint 40 and a pressing member 5. The conductor joint 40 conducts the conductor 2 of the two insulating trolley wires 1, and the conductor 2 is pressed by the pressing member 5. The pressing member 5 includes a pressing portion 6 and an elastic member 7. The pressing portion 6 directly contacts the conductor 2 and presses the conductor 2 against the conductor joint 40 and is pressed by the elastic member 7 made of a leaf spring or the like.

  In the conventional insulated trolley wire connecting device 3 described above, the conductor 2 is connected to the conductor joint via the pressing portion 6 by the large biasing force of the elastic member 7 in order to ensure the conduction between the two conductors 2 to be connected. 40. When the urging force of the elastic member 7 is large, the resistance force when the conductor 2 is inserted between the pressing portion 6 and the conductor joint 4 becomes large, and the conductor 2 becomes difficult to be inserted.

  However, when the urging force of the elastic member 7 is small, the conductor 2 is easily inserted, but it is difficult to ensure conduction of the connected conductor 2.

  The present invention has been invented in view of the above-described conventional problems, and an object of the present invention is to provide an insulated trolley wire connecting device in which conduction of a connected conductor is ensured and a conductor is easily inserted. This is a problem.

  In order to solve the above problems, the present invention has the following configuration.

  A conductor joint for conducting the conductors of the two insulated trolley wires to be connected; a pressing member that presses the conductor against the conductor joint; and a joint body that holds the conductor joint and the pressing member, The pressing member includes a pressing portion that directly contacts the conductor, and an elastic member that is disposed between the pressing member support surface formed on the joint body and the pressing portion and presses the pressing portion. The elastic member is characterized in that the elastic coefficient increases stepwise or continuously as the distance of the pressing portion from the pressing member support surface becomes shorter.

  Moreover, it is preferable that a plurality of leaf springs are combined as the elastic member.

  Further, it is preferable that the plurality of leaf springs are substantially V-shaped and are formed such that the heights from both ends to the top are different, and the plurality of leaf springs are overlapped.

  The elastic member is preferably composed of a plurality of coil springs having different natural lengths.

  In the present invention, the conduction of the connected conductor is ensured, and the conductor is easily inserted.

The insulated trolley wire connection apparatus of one Embodiment of this invention is shown, (a) is sectional drawing, (b) is the partially expanded view of (a). In the same as above, a state where the insulating trolley wire is inserted partway is shown, (a) is a sectional view, and (b) is a partially enlarged view of (a). The state which further inserted the insulation trolley wire in the same as the above is shown, (a) is sectional drawing, (b) is the elements on larger scale of (a). (A) is a bottom view of an insulated trolley wire connecting device to which an insulated trolley wire is connected, (b) is a side view of the insulated trolley wire connecting device to which an insulated trolley wire is connected, and (c) is an insulated trolley. It is sectional drawing of the insulated trolley line connection apparatus with which the line was connected, (d) is a bottom view of the insulated trolley line connection apparatus before an insulated trolley line is connected. It is a relationship figure of the displacement of an elastic member-biasing force. Other embodiment is shown, (a) is sectional drawing of an insulated trolley wire connection apparatus, (b) is sectional drawing of the insulated trolley wire connection apparatus to which the insulated trolley wire was connected. It is sectional drawing of the insulated trolley wire connection apparatus of other embodiment. The conventional insulation trolley wire connecting device is shown, (a) is a cross-sectional view, (b) is a cross-sectional view with the insulation trolley wire inserted halfway, and (c) is further inserted with the insulation trolley wire. It is sectional drawing of the state made.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

  The insulated trolley wire current collector is mainly composed of a current collector provided on a moving load such as a crane or a hoist, and an insulated trolley wire 1 provided on a construction material such as a ceiling.

  As shown in FIG. 4, the insulating trolley wire 1 includes an insulating frame 11 and a conductor 2. The insulating frame 11 has a long groove 12 that is open in a direction perpendicular to the longitudinal direction over the entire length of the insulating frame 11 in the longitudinal direction. A long conductor 2 as a power feeder is held at the bottom of the groove 12 of the insulating frame 11 to form an insulating trolley wire 1. In the present embodiment, the plurality of grooves 12 of the insulating frame 11 are arranged in parallel and the conductor 2 is held in each groove 12, but the groove 12 and the conductor 2 may be a set. In addition, the conductor 2 has a long flat plate shape with a rectangular cross section in the present embodiment, but is not particularly limited. The insulated trolley wire 1 is suspended and fixed to a construction material such as a ceiling via a hanger or the like and is provided along a load moving path, but may be attached to a wall surface.

  As shown in FIG. 1, the insulated trolley wire connecting device 3 includes a joint body 31, a conductor joint 40, and a pressing member 5. As shown in FIGS. 1 and 4, the joint body 31 holds the conductor joint 40 and the pressing member 5, and has a plate-like base 32 and a side wall 33 projecting in parallel from the base 32. And has a groove 34 between the side walls 33. The number of grooves 34 is provided in accordance with the number of conductors 2 (the number of pairs of conductors 2 to be connected) included in the insulated trolley wire 1, and the conductors 2 and the grooves 34 may be either singular or plural.

  The conductor joint 40 is made of a conductive member such as a metal, and conducts the two conductors 2. In the present embodiment, a part of the inner surface of the joint member 4 having a cylindrical shape or a shape in which a part of the circumferential direction of the cylinder is opened (collectively, a cylindrical shape or the like) is a conductor joint 40 with which the conductor 2 abuts. However, it does not have to be cylindrical. The conductor joint 40 is preferably flat so that one plate surface 21 (see FIG. 2) of the conductor 2 can come into surface contact. The joint member 4 is provided in the joint body 31 such that the internal space communicates with the groove 34 of the joint body 31.

  As shown in FIG. 1, the pressing member 5 biases the conductor 2 so as to press the conductor 2 against the conductor joint 40. Specifically, the pressing member 5 includes a pressing portion 6 and a plurality of elastic members 7 having different strokes. The pressing portion 6 directly contacts the conductor 2 and presses the conductor 2 against the conductor joint 40. In this embodiment, it consists of a flat plate having a rectangular cross section, and one plate surface serves as a pressing surface 61 that contacts the other plate surface 22 (see FIG. 2) of the conductor 2. The plate surface opposite to the pressing surface 61 of the pressing portion 6 becomes the pressed surface 62 pressed by the elastic member 7. Moreover, in this embodiment, the edge part of the pressing part 6 is bent to the to-be-pressed surface 62 side. This bent portion serves as a guide portion 63 that guides the conductor 2 toward the pressing surface 61 when the conductor 2 is inserted, and is preferably constituted by a curved portion having a smooth curved surface.

  The elastic member 7 is disposed between the pressed surface 62 and the pressing member support surface 41 and presses the pressing portion 6. As the distance of the pressing portion 6 from the pressing member support surface 41 becomes shorter, The elastic modulus is formed to be large. In this embodiment, as shown in FIG. 1, the elastic member 7 is comprised with a leaf | plate spring. In this embodiment, the surface facing the conductor joint 40 of the tubular joint member 4 or the like is the pressing member support surface 41, and the elastic member 7 made of a leaf spring and the pressing portion 6 are provided on the joint member 4. It is accommodated between the inner conductor joint 40 and the pressing member support surface 41. The leaf spring is formed by bending a flat plate having elasticity such as metal so as to form an obtuse angle at a substantially central portion so as to be substantially V-shaped. And the top part located in the substantially center part is supported by the pressing member support surface 41, and the edge part which becomes a skirt of both sides contact | abuts to the to-be-pressed surface 62 of the pressing part 6. FIG. Note that the leaf spring may not be bent at the substantially central portion.

  In the present embodiment, two leaf springs are provided as the elastic member 7. As shown in FIG. 1B, the two leaf springs have heights h1 and h2 (h1> from the flat surface to the top when both ends are placed on the flat surface with no external force applied. h2) are formed differently. The plate spring having a higher height h1 is referred to as a long stroke leaf spring 71, and the plate spring having a lower height h2 is referred to as a short stroke leaf spring 72.

  The two leaf springs 71 and 72 are overlapped in a state in which the long stroke leaf spring 71 is located on the pressing portion 6 side and the short stroke leaf spring 72 is located on the pressing member support surface 41 side and in contact with each other at the top portion. It is done. That is, in this embodiment, a stroke means the range from the pressing member support surface 41 to the pressing part 6 side where the elastic member 7 exhibits an elastic function. The overlapped leaf springs 71 and 72 and the pressing portion 6 are such that the top of the short stroke leaf spring 72 abuts against the pressing member support surface 41, and both end portions of the long stroke leaf spring 71 are against the pressed surface 62. Abutting and being accommodated inside the joint member 4 in a state where the pressing surface 61 of the abutting portion 6 abuts on the conductor joint 40.

  In the insulated trolley wire connecting device 3, the end portions of the two conductors 2 are inserted into the groove 34 from both sides of the groove 34. When the end of the conductor 2 reaches the joint member 4, the conductor 2 moves the guide portion 63 toward the pressing member support surface 41 against the urging force of the long stroke leaf spring 71, and the pressing portion 6 The gap between the conductor joint 40 is widened.

  When the end portion of the conductor 2 is inserted along the guide portion 63, the pressing portion 6 further moves toward the pressing member support surface 41 as shown in FIG. From h1 to h3 (h1> h3), the long stroke leaf spring 71 comes into contact with the short stroke leaf spring 72. When the conductor 2 is further inserted, the guide portion 63 is moved toward the pressing member support surface 41 against the biasing force of the long stroke leaf spring 71 and the short stroke leaf spring 72, and the pressing portion 6 and the conductor joint 40 Further widen the gap between. Then, as shown in FIG. 3, the length of the long stroke leaf spring 71 is h3 to h4 (h3> h4), and the height of the short stroke leaf spring 72 is h2 to h5 (h2> h5). A gap corresponding to the thickness of the conductor 2 is formed between the portion 6 and the conductor joint 40. The conductor 2 is further inserted, slidably contacts the pressing portion 6 and the conductor joint 40 and moves in the longitudinal direction, and the connection is completed. The relationship between the displacement of the pressing portion 6 toward the pressing member support surface 41 and the urging force by the elastic member 7 corresponding to the displacement during this period is shown by line A in FIG. The long stroke leaf spring 71 and the short stroke leaf spring 72 are formed so that the elastic coefficient increases stepwise as the distance from the pressing member support surface 41 of the pressing portion 6 becomes shorter (that is, the displacement becomes larger). ing. More specifically, the elastic coefficient of the long stroke leaf spring 71 is the elastic coefficient of the elastic member 7 until the displacement is from 0 to h1-h3, that is, until the long stroke leaf spring 71 contacts the short stroke leaf spring 72. (Slope of line A in FIG. 5). When the displacement is from h1 to h3 to h1 to h4, that is, after the long stroke leaf spring 71 contacts the short stroke leaf spring 72, the elastic coefficient of the long stroke leaf spring 71 and the elasticity coefficient of the short stroke leaf spring 72 are reduced. The sum is the elastic coefficient of the elastic member 7. The relationship in the conventional example is shown by a line B in FIG.

  In FIG. 5, in the state where the displacement is h1−h4, that is, in the state where the thickness of the conductor 2 is inserted between the pressing portion 6 and the conductor joint 40, both the line A and the line B are caused by the elastic member 7. The biasing force is the same. Therefore, also in the present invention, as in the conventional example, the conductor 2 is pressed against the conductor joint 40 via the pressing portion 6 by the large biasing force of the elastic member 7, and the conduction of the conductor 2 is ensured. I understand that.

  In FIG. 5, the biasing force on the line A is the point where the displacement is less than h1−h4, that is, until the thickness of the conductor 2 is inserted between the pressing portion 6 and the conductor joint 40. Less than the biasing force on line B. From this, it can be seen that in the present invention, the conductor 2 is inserted with a smaller force than in the conventional example, and the amount of work required to insert the conductor 2 can be smaller than in the conventional example.

  As described above, the insulated trolley wire connecting device 3 according to the present invention ensures the continuity of the conductor 2 to be connected and allows the conductor 2 to be easily inserted.

  In this embodiment, the elastic coefficient of the elastic member 7 changes in two stages, but may change in three or more stages. When the elastic member 7 is formed so that the elastic coefficient changes in n stages, the elastic member 7 is easily configured by n substantially V-shaped leaf springs having different heights from both ends to the top. The

  Moreover, the elastic coefficient of the elastic member 7 may change continuously. When the elastic coefficient of the elastic member 7 changes continuously, it is preferable that the elastic member 7 is configured with a member whose elastic coefficient increases as the displacement increases.

  Next, another embodiment will be described with reference to FIG. In addition, about the same structure as the said embodiment shown in FIG. 1 thru | or FIG. 5, the same code | symbol is attached | subjected and description is abbreviate | omitted and a different structure is mainly demonstrated.

  In this embodiment, a coil spring is used instead of the leaf spring in the above embodiment. A plurality of coil springs having different lengths (ie, natural lengths) in a state where no external force is applied are used. In this embodiment, the long coil spring 73 having the longer natural length and the short coil spring 74 having the shorter natural length are configured. The base ends of the coil springs 73 and 74 are fixed to the pressing member support surface 41.

  When the end portion of the inserted conductor 2 reaches the joint member 4, the conductor 2 moves the guide portion 63 toward the pressing member support surface 41 against the urging force of the long coil spring 73, and the pressing portion 6 The gap between the conductor joint 40 is widened.

  When the end portion of the conductor 2 is inserted along the guide portion 63, the pressing portion 6 moves to the pressing member support surface 41 side, and the pressed surface 62 contacts the short coil spring 74. When the conductor 2 is further inserted, the guide portion 63 is moved to the pressing member support surface 41 side against the urging force of the long coil spring 73 and the short coil spring 74, and between the pressing portion 6 and the conductor joint 40. Is further widened to form a gap corresponding to the thickness of the conductor 2. Also in this embodiment, the relationship between the displacement of the pressing portion 6 toward the pressing member support surface 41 and the biasing force by the elastic member 7 corresponding to the displacement is the same as the line A in FIG. Thereby, as for the insulated trolley wire connection apparatus 3 of this invention, conduction | electrical_connection of the conductor 2 connected is ensured, and the conductor 2 is easy to insert.

  In this embodiment, the elastic coefficient of the elastic member 7 changes in two stages, but may change in three or more stages. When formed so that the elastic coefficient of the elastic member 7 changes in n stages, the elastic member 7 is easily configured by n coil springs having different natural lengths.

  Next, still another embodiment will be described with reference to FIG. In addition, about the same structure as the said embodiment shown in FIG. 1 thru | or FIG. 5, the same code | symbol is attached | subjected and description is abbreviate | omitted and a different structure is mainly demonstrated.

  In this embodiment, a small leaf spring 75 is used instead of the short stroke leaf spring 72 in the above embodiment. The small leaf springs 75 are formed by being bent so as to form an acute angle at a substantially central portion so as to be substantially V-shaped, and two leaf springs are provided. The small plate spring 75 may not be bent at the substantially central portion.

  The small plate springs 75 are overlapped and combined with the left and right halves of the long stroke leaf spring 71 to constitute the elastic member 7.

  When the end portion of the inserted conductor 2 reaches the joint member 4, the conductor 2 moves the guide portion 63 toward the pressing member support surface 41 against the urging force of the long stroke leaf spring 71, and the pressing portion 6. And the gap between the conductor joints 40 is increased.

  When the end portion of the conductor 2 is inserted along the guide portion 63, the pressing portion 6 moves to the pressing member support surface 41 side, and the plate surface of the long stroke leaf spring 71 is the plate of the small leaf spring 75. Contact the surface. When the conductor 2 is further inserted, the guiding portion 63 is moved toward the pressing member support surface 41 against the biasing force of the long stroke leaf spring 71 and the small leaf spring 75, and the pressing portion 6 and the conductor joint 40 are moved. The gap between them is further widened, and a gap corresponding to the thickness of the conductor 2 is formed. Also in this embodiment, the relationship between the displacement of the pressing portion 6 toward the pressing member support surface 41 and the biasing force by the elastic member 7 corresponding to the displacement is the same as the line A in FIG. Thereby, as for the insulated trolley wire connection apparatus 3 of this invention, conduction | electrical_connection of the conductor 2 connected is ensured, and the conductor 2 is easy to insert.

DESCRIPTION OF SYMBOLS 1 Insulation trolley wire 11 Insulation frame 12 Groove 2 Conductor 21 One plate surface 22 The other plate surface 3 Insulation trolley wire connection apparatus 31 Joint main body 32 Base 33 Side wall 34 Groove 4 Joint member 40 Conductor joint 41 Press member support surface 5 Press Member 6 Pressing portion 61 Pressing surface 62 Pressed surface 63 Guide portion 7 Elastic member 71 Long stroke leaf spring 72 Short stroke leaf spring 73 Long coil spring 74 Short coil spring 75 Small leaf spring

Claims (4)

  A conductor joint that is electrically connected to the conductors of the two insulated trolley wires to be connected; a pressing member that presses the conductor against the conductor joint; and a joint body that holds the conductor joint and the pressing member, The pressing member includes a pressing portion that directly contacts the conductor, and an elastic member that is disposed between the pressing member support surface formed on the joint body and the pressing portion and presses the pressing portion. The insulating trolley wire connecting device according to claim 1, wherein the elastic member has an elastic coefficient that increases stepwise or continuously as the distance from the pressing member support surface of the pressing portion decreases.   The insulated trolley wire connecting device according to claim 1, wherein the elastic member is configured by combining a plurality of leaf springs.   3. The insulation according to claim 2, wherein the plurality of leaf springs are substantially V-shaped, are formed to have different heights from both ends to the top, and the plurality of leaf springs are overlapped. Trolley wire connection device.   The insulated trolley wire connecting device according to claim 1, wherein the elastic member includes a plurality of coil springs having different natural lengths.

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