JP4950708B2 - Connection device - Google Patents

Description

  The present invention relates to a connection device to which a high-frequency feed line is connected.

  Conventionally, in a high-frequency power supply line, in order to reduce the influence of the skin effect, the conductor portions are each made of a conductive material, and the thickness is less than the skin depth and are arranged in a nested manner and insulated from each other. It has been proposed to be configured with a single conductor tube (see, for example, Patent Document 1).

An example of this type of feeder is shown in FIG. The feeder line 2 has two cylindrical conductors 21a and 21b each having a cylindrical shape and different pipe diameters and aligned with each other, and an insulating coating made of an insulating material and covering the outer conductor pipe 21a. 22 and an insulator 23 interposed between the conductor tubes 21a and 21b to insulate the conductor tubes 21a and 21b and support the inner conductor tube 21b with respect to the outer conductor tube 21a.
Japanese Patent Laid-Open No. 5-190026

  Conventionally, as shown in FIG. 23, for example, when connecting the feeder 2 to the electric wire C such as a guide wire, the electric wire W to the crimp terminal C <b> 1 provided at one end of the electric wire C is used. The connection was made for each conductor tube 21a, 21b.

  The present invention has been made in view of the above-described reasons, and an object thereof is to provide a connection device that can be easily connected to a feeder line.

According to the first aspect of the present invention, there are provided a plurality of conductor tubes each made of a conductive material and having a tubular shape and arranged in a nested manner so that a high-frequency current flows in the axial direction, and an insulating coating covering the outermost conductor tube. A high-frequency power supply line is provided between the conductor pipes. A connecting device to be connected, which is made of a conductive material and is inserted in a state in which at least one end of the power supply line is removed from the insulation coating, and each second and subsequent conductors from the outside of the power supply line inserted into the insertion opening Each of the pipes is provided with a conductive block that is electrically and mechanically connected to the feeder line by fitting the outermost conductor pipe to the insertion opening. At one end of the wire Each of the second and subsequent conductor tubes from the inside is removed longer as the outer conductor tube is removed, and the one end portion is removed in a state where the insulating coating and each insulator are removed so as to expose the outer peripheral surface of the inner conductor tube. At least a pair of conductive blocks are provided for each conductor tube and are sandwiched to form an insertion port therebetween, and each of the sandwiched portions protrudes in a common direction. Are connected in such a manner that they can be elastically deformed so as to increase the gap between the pair of sandwiching portions, and the corresponding conductor tube is resiliently sandwiched between the pair of sandwiching portions. Thus, the pairs of sandwiching portions are arranged in the order of the size of the outer shape of the corresponding conductor tube in a direction intersecting the direction in which the pair of sandwiching portions face each other and the protruding direction of the sandwiching portion from the connecting portion. It is characterized by that.

  According to the present invention, since the power supply line can be connected simply by inserting the power supply line into the insertion port and bringing the contact portion into contact with the conductor tube, each conductor tube of the power supply line is connected via the electric wire. Compared to the case where the power supply line is connected, the work of connecting the power supply line becomes easier.

According to a second aspect of the present invention, in the first aspect of the present invention, the feeder is sandwiched between the closed portion that is located on the opposite side of the connecting portion with the feeder line sandwiched between the sandwiching portions and prevents the feeder line from coming off. A retaining member attached to the conductive block so as to be displaceable is provided between an open position retracted so as not to be positioned in a direction in which the clamping portion protrudes from the connecting portion with respect to the power supply line.

  According to this invention, it is possible to prevent the power supply line from dropping off from the conductive block in the protruding direction of the holding portion by the retaining member.

According to a third aspect of the present invention , there are provided a plurality of conductor tubes each made of a conductive material and having a tubular shape and arranged in a nested manner so that a high-frequency current flows in the axial direction, and an insulation covering the outermost conductor tube. A high-frequency power supply line is provided between the conductor pipes. A connecting device to be connected, which is made of a conductive material and is inserted in a state in which at least one end of the power supply line is removed from the insulation coating, and each second and subsequent conductors from the outside of the power supply line inserted into the insertion opening Each of the pipes is provided with a conductive block that is electrically and mechanically connected to the feeder line by fitting the outermost conductor pipe to the insertion opening. At one end of the wire The one end is inserted in a state where at least one of the inner peripheral surface and the outer peripheral surface is exposed for each conductor tube with at least the insulating coating removed, and the conductive blocks are made of a conductive material and face each other. The outermost conductor tube of the portion where the insulation coating is removed in the feeder line is fitted between the sandwiching portions having a sandwiching portion that forms an insertion port therebetween and a connecting portion that connects one end of the sandwiching portion to each other. And a contact body as a contact portion made of a conductive material and brought into contact with and conducted to the second and subsequent conductor pipes from the outside. A fitting portion that is provided for each of the second and subsequent conductor pipes and is fitted to the corresponding conductor pipe or is electrically and mechanically connected to the conductor pipe by fitting the corresponding conductor pipe. Have and hold Characterized in that it is slidably supported in the fitting direction of the fitting portion with respect.

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the insertion port and the contact portion are provided for two feed lines, respectively, and the feed lines inserted into the insertion port are electrically connected to each other. It is characterized by that.

  According to the first aspect of the present invention, an insertion port that is made of a conductive material and is inserted in a state where at least one end of the feeding line is removed, and each of the second and subsequent conductor tubes from the outside of the feeding line that is inserted into the insertion port. Since the contact portions that are in contact with each other are provided, the connection with the power supply line can be achieved simply by inserting the power supply line into the insertion port and bringing the contact portion into contact conduction with the conductor tube. Compared with the case where each of the conductor pipes is connected via an electric wire, the work of connecting the feeders becomes easier.

According to a second aspect of the present invention, in the first aspect of the present invention, the feeder is sandwiched between the closed portion that is located on the opposite side of the connecting portion with the feeder line sandwiched between the sandwiching portions and prevents the feeder line from coming off. A retaining member attached to the conductive block so as to be displaceable between the open position retracted so as not to be positioned in the direction in which the sandwiching portion protrudes from the connecting portion with respect to the power supply line is provided. Further, it is possible to prevent the power supply line from dropping off from the conductive block in the protruding direction of the sandwiching portion.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  In each of the following embodiments, the configuration of the feed line 2 is the same as that of the conventional example, and thus the description regarding the feed line 2 is omitted.

(Embodiment 1)
As shown in FIG. 1, the connection device 1 a according to the present embodiment is configured such that, for example, an electric wire C such as a guide wire is electrically and mechanically connected, and a feeder 2 is electrically and mechanically connected. The electrical connection between the feeder 2 and the electric wire C is maintained. Hereinafter, the vertical and horizontal directions are based on FIG. 1A, and the horizontal direction in FIG. Note that the above directions are merely for convenience of explanation, and are not related to the directions in the actual use state.

  In the present embodiment, as shown in FIG. 2, the feeder 2 removes the outer conductor tube 21 a and the insulator 23 to the same extent at one end so that the outer surface of the inner conductor tube 21 b is exposed. Further, the insulating coating 22 is connected in a state in which it is removed more than the above removal amount of the conductor tube 21a and the insulator 23 so that the outer surface of the outer conductor tube 21a is exposed.

  In addition, the present embodiment includes a holding body 3 as a conductive block that is electrically and mechanically connected to the feeder line 2 by elastically holding the conductor tubes 21a and 21b of the feeder line 2 respectively. More specifically, the holding body 3 is formed by, for example, punching and bending a metal plate, and a pair of connecting portions 31 each having an upward U-shaped cross section are provided for each of the conductor tubes 21a and 21b. Two pairs of sandwiching portions 32 and 33 projecting upward from the upper end of the connecting portion 31 and facing left and right are provided. The holding body 3 is elastically deformable so as to increase the gap between the sandwiching portions 32 and 33, and each pair of the sandwiching portions 32 and 33 elastically connects the corresponding conductor tubes 21a and 21b from both sides in the radial direction. The holding body 3 is electrically and mechanically connected to the respective conductor tubes 21a and 21b of the feeder line 2 by being sandwiched between them. That is, a gap formed between the pair of sandwiching portions 32 and 33 is an insertion port in the claims, and the sandwiching portion 33 that sandwiches the inner conductor tube 21b is a contact portion in the claims. In addition, the holding portions 32 and 33 are respectively provided with guide portions 32a and 33a that are inclined outwardly upward, and when the feeder 2 is connected, the conductor tubes 21a and 21b are respectively connected to the guide portions 32a and 33a. By sliding on 33a, each conductor tube 21a, 21b can be easily introduced between the sandwiching portions 32, 33 from above. Moreover, in each clamping part 32 and 33, it swelled in circular arc shape in the left-right direction (namely, the direction away from the other clamping part 32 and 33 which makes a pair) below the guidance | induction part 32a and 33a, respectively. The bulging portions 32b and 33b are provided, and the conductor tubes 21a and 21b are fitted between the bulging portions 32b and 33b, respectively, so that the vertical displacement of the holding body 3 is suppressed.

  Further, a crimp terminal C1 provided at one end of the electric wire C is electrically and mechanically connected to the inner bottom surface of the connecting portion 31 by appropriate means such as screwing, welding, or soldering. That is, the connecting device 1a in FIG. 1 is for electrically connecting the feeder 2 and the electric wire C to each other.

  The connecting device 1a in FIG. 1 electrically connects the feeder 2 and the electric wire C to each other. As shown in FIG. 3, the two feeders 2 can be connected to each other. It is also possible to provide a connection device 1b that electrically connects the feeder lines 2 to each other. In the example of FIG. 3, the sandwiching portions 32 corresponding to the second and subsequent conductor tubes 21 a from the inside are respectively provided on both sides of the sandwiching portion 33 that sandwiches the innermost conductor tube 21 b (left and right in FIG. 3B). One pair is provided. The two feeders 2 are connected to the connecting device 1b in such a manner that the tips are attached to each other, and the innermost conductor tubes 21b are respectively held by the common holding portion 33, while the second and subsequent conductors from the inside The tubes 21a are clamped between the corresponding pairs of clamping portions 32, respectively.

  As shown in FIG. 4, for example, as shown in FIG. 4, the connecting device 1a for connecting the feeder 2 and the electric wire C as shown in FIG. 1 and the connecting device 1b for connecting the feeders 2 as shown in FIG. The connecting device 1b shown in FIG. 3 can be used at the extended portion, and the connecting device 1a shown in FIG. 1 can be used at the terminal of the feeder line 2 such as the connecting location with the power source AC.

  According to the above configuration, the feeder line 2 can be connected simply by pushing the feeder line 2 from above the holding body 3 so that the conductor tubes 21a and 21b are sandwiched between the corresponding sandwiching portions 32 and 33, respectively. Therefore, the work of connecting the feeder 2 is facilitated compared to the case of performing the connection work via the electric wire W for each of the conductor tubes 21a and 21b.

  In addition, what is necessary is just to add the clamping part 34 according to the number of the conductor tubes 21a-21c as shown in FIG. 6, when the conductor tubes 21a-21c are triple or more as shown in FIG. Here, the sandwiching portions 32, 33, 34 are arranged in the order of the diameter of the corresponding conductor tubes 21 a to 21 c from the left-right direction, which is a direction in which the pair of sandwiching portions 32, 33, 34 face each other, and the connecting portion 31. Are arranged side by side in the direction intersecting with the upward direction which is the protruding direction of the sandwiching portions 32, 33, 34, that is, the front-rear direction (the left-right direction in FIG. 6B).

  Further, as shown in FIGS. 7 and 8, the holding body 3 is between a closed position where the conductor tube 21 a is sandwiched between the connecting portion 31 of the holding body 3 and an open position where the conductor pipe 21 a and 21 b are retracted from above. A retaining member 4 that is attached so as to be freely displaced may be added. More specifically, the retaining body 4 is formed by bending a metal plate, for example, and the body 41 facing the bottom surface of the connecting portion 31 of the holding body 3 and the left and right ends of the body 41 are respectively downward. The arm part 42 which protrudes and clamps the connection part 31 of the holding body 3 elastically from right and left is comprised. Here, the upper end portion held by the arm portion 42 of the retaining body 4 in the connecting portion 31 of the holding body 3 and the lower end portion of each arm portion 42 of the retaining body are respectively inward in the left-right direction. Since the inclined surfaces are in contact with each other and elastically contact each other, the retaining body 4 is prevented from falling upward with respect to the holding body 3 (see FIGS. 7B and 8B). In the left and right directions). If such a retaining member 4 is provided, it is possible to prevent the feeder line 2 from falling off by moving the retaining member 4 to the closed position as shown by an arrow A1 after the feeder line 2 is connected.

(Embodiment 2)
In the present embodiment, as shown in FIG. 5, the feeder 2 has triple conductor tubes 21 a to 21 c so that the inner peripheral surface and the outer peripheral surface of each of the conductor tubes 21 a to 21 c are exposed at one end. The power supply line 2 from which the insulation coating 22 and the respective insulating layers 23 are removed is connected to the outermost conductor tube 21a made of a conductive material and made of a conductive material, as shown in FIGS. And a contact body 5 as a contact portion made of a conductive material and in contact with the second and subsequent conductor tubes 21b, 21c. That is, the holding body 3 and the contact body 5 constitute a conductive block in the claims.

  The holding body 3 includes a connecting portion 31 and a pair of clamping portions 32 similar to the holding body 3 of the first embodiment. Each clamping part 32 is provided with a guiding part 32a and a bulging part 32b similar to those in the first embodiment.

  The contact body 5 straddles the pair of sandwiching portions 32 of the holding body 3 and faces the inner bottom surface of the connecting portion 31. The contact body 5 protrudes downward from the left and right ends of the body portion 51 and faces the left and right sides. Arm portion 52. The lower end portion of each arm portion 52 is inclined inward in the left-right direction toward the lower side, and the lower end portion is locked to the lower end portion of the bulging portion 32 b of the holding body 3. Is held slidably forward and backward with respect to the holding body 3 and is in contact with the holding body 3.

  Further, the contact body 5 protrudes downward from the main body 51 and has a support portion 53 whose thickness direction is directed in the front-rear direction, and is protruded from one surface of the support portion 53 to one side in the thickness direction. It has fitting part 54a, 54b which each carries out contact conduction to each conductor pipe 21b after the 2nd from the outside.

  In the present embodiment, as the fitting portions 54a and 54b, a cylindrical first fitting portion 54a that fits into the innermost conductor tube 21b, and a cylindrical shape that surrounds the first fitting portion 54a and inside And a second fitting portion 54b fitted to the second conductor tube 21c.

  In connecting the power supply line 2, the outermost conductor tube 21 a is introduced from above between the holding parts 32 of the holding body 3 with the axial direction of the power supply line 2 in the front-rear direction, and then contacted. The body 5 is slid in the protruding direction of the fitting portions 54a and 54b (leftward in FIG. 11A), and the fitting portions 54a and 54b are fitted into the corresponding conductor tubes 21b and 21c, respectively. Here, in the above case, it is not always necessary to remove the outer insulator 23 for connection.

  According to the above configuration, the feeder line 2 can be electrically connected by simply sliding the contact body 5 after the outermost conductor tube 21a of the feeder line 2 is sandwiched between the sandwiching portions 32 of the holding body 3. Therefore, the work of connecting the feeder 2 is facilitated compared to the case of performing the connection work via the electric wire W for each of the conductor tubes 21a and 21b.

  As shown in FIGS. 12 and 13, two contact bodies 5 in opposite directions (that is, the protruding direction of the fitting portions 54a and 54b is away from the other contact body 5 in the front-rear direction) are provided. For example, the connection device 1b that electrically connects the feeders 2 to each other can be provided.

  Moreover, what is necessary is just to add a fitting part to the contact body 5, when the conductor tubes 21a-21c are four or more layers. Furthermore, when the conductor tubes 21a and 21b are double as shown in FIG. 14, the second fitting portion 54b may be omitted as shown in FIGS.

  Further, the fitting portions 54a and 54b fitted to the corresponding conductor tubes 21a and 21b are respectively cylindrical as shown in FIG. 18 (only the fitting portion 54a corresponding to the innermost conductor tube 21a is shown). In the shape, a plurality of slits 50 that are long in the axial direction are arranged in the circumferential direction, and each portion sandwiched between the slits 50 is bent so that the central portion in the axial direction bulges outward in the radial direction. Also good. If this configuration is adopted, even if the dimensional accuracy of the fitting portions 54a and 54b is somewhat low, the inside of the conductor tubes 21b and 21c corresponding to the fitting portions 54a and 54b by the spring force of the fitting portions 54a and 54b itself. Contact pressure with the peripheral surface is secured.

(Embodiment 3)
In this embodiment, as shown in FIG. 14, the feeder 2 having the double conductor pipes 21a and 21b is connected to the one end by removing the insulating coating 22 at one end, As shown in FIG. 20, each of the conductor tubes 21 a and 21 b of the feeder line 2 and the electric wire C are electrically and mechanically connected to each other, and a housing 7 that houses and holds the electrically conductive block 6. .

  The conductive block 6 is provided with a bottomed cylindrical main body 61 that constitutes an insertion port into which the outermost conductor tube 21a is fitted, and the electric wire C is projected from the bottom of the main body 61 in the radial direction of the main body 61. And a terminal portion 62 to be connected. The housing 7 has a hollow rectangular parallelepiped shape, and an opening 71 for exposing the opening of the main body 61 of the conductive block 6 is provided on one surface, and an insertion hole 72 for drawing out the electric wire C is provided on one surface adjacent to the one surface. Is provided.

  Further, on the inner bottom surface of the main body portion 61 of the conductive block 6, a cylindrical shape as a contact portion that fits the innermost conductor tube 21 b of the feeder 2 in which the outermost conductor tube 21 a is fitted to the main body portion 61. The fitting part 61a protrudes forward.

  According to the said structure, since the connection with the feeder 2 is achieved only by fitting of the conductor pipe 21a to the main body 61, compared with the case where the connection work via the electric wire W is performed for each of the conductor pipes 21a and 21b. Thus, the work of connecting the feeder 2 becomes easy.

  When connecting the feeder 2 having three or more conductor tubes 21a to 21c, as shown in FIG. 21, a fitting portion 61b having a cylindrical shape to be fitted to the conductor tube 21c or to be fitted with the conductor tube 21c is provided. What is necessary is just to add suitably, and when it is set as the connection apparatus 1b which connects the feeders 2 mutually, what is necessary is just to electrically connect the two electroconductive blocks 6, for example.

(A) (b) is a figure which shows embodiment of this invention, respectively, (a) is a rear view, (b) is a right view. It is a perspective view which shows the feeder line connected to the same as the above. (A) (b) is a figure which shows another form same as the above, respectively (a) is sectional drawing in the center of the left-right direction of (b), (b) is a right view. It is a schematic block diagram which shows an example of the usage pattern same as the above. (A) (b) is a figure which shows the electric power feeding line connected to another form same as the above, respectively (a) is a perspective view, (b) is the perspective view which fractured | ruptured partially. (A) (b) is a figure which shows another form same as the above, respectively, (a) is a rear view, (b) is a right view. (A) (b) is a figure which shows another form same as the above, respectively (a) is a rear view, (b) is a right view. (A) (b) is a figure which shows another form same as the above, respectively, (a) is sectional drawing in the center of the left-right direction of (b), (b) is a right view. It is a perspective view which shows Embodiment 2 of this invention. It is the perspective view seen from the angle different from FIG. 9 which shows the same. (A) (b) is sectional drawing which respectively shows the same as the above, (a) shows the state before a connection, (b) shows the state after a connection. It is a perspective view which shows another form same as the above. It is sectional drawing which shows the form of FIG. It is a perspective view which shows the electric power feeding line connected to another form same as the above. It is a perspective view which shows another form same as the above. It is the perspective view seen from the angle different from FIG. 15 which shows the form of FIG. (A) (b) is sectional drawing which respectively shows the form of FIG. 15, (a) shows the state before a connection, (b) shows the state after a connection. It is a right view which shows the principal part of another form same as the above. (A) (b) is a perspective view which respectively shows Embodiment 3 of this invention, (a) (b) shows the state seen from a mutually different direction. (A) (b) is sectional drawing which respectively shows the same as the above, (a) shows the state before a connection, (b) shows the state after a connection. (A) (b) is a perspective view which shows another form same as the above, respectively, (a) (b) shows the state seen from a mutually different direction. It is a perspective view which shows an example of a feeder. (A) (b) is a figure which respectively shows a prior art example, (a) is a rear view, (b) is a right view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1a, 1b Connection apparatus 2 Feeding line 3 Holding body 4 Retaining body 5 Contact body 6 Conductive block 21a-21c Conductor tube 22 Insulation coating 23 Insulator 31 Connecting part 32, 33, 34 Holding part 54a, 54b Fitting part 61a, 61b Fitting part

Claims (4)

Each of the conductor tubes is made of a conductive material and has a tube shape and is arranged in a nested manner so that a high-frequency current flows in the axial direction. The conductor tube is made of an insulator and covers the outermost conductor tube. Between them, there is a connection device to which a high-frequency power supply line is connected, which is made of an insulating material and is provided with an insulator that insulates the conductor tubes and supports the inner conductor tube with respect to the outer conductor tube. And
An insertion port that is made of a conductive material and is inserted in a state where at least one end of the power supply line has an insulating coating removed, and a contact part that is in contact with each of the second and subsequent conductor tubes from the outside of the power supply line inserted into the insertion port; Each having a conductive block electrically and mechanically connected to the feeder line by fitting the outermost conductor tube to the insertion port ,
The insertion port is such that each of the second and subsequent conductor tubes from the inside is removed longer as the outer conductor tube at one end of the feeder line, and the insulation coating and each insulator expose the outer peripheral surface of the inner conductor tube. The one end is inserted in a state where it is removed,
The conductive block is provided with at least one pair for each conductor tube, a sandwiching portion that faces each other and forms an insertion port therebetween, and a coupling portion that is coupled so that each sandwiching portion protrudes in a common direction. And can be elastically deformed so as to increase the gap between the pair of sandwiching portions, and elastically sandwich the corresponding conductor tube between the pair of sandwiching portions,
The pair of sandwiching portions is arranged in the order of the size of the outer shape of the corresponding conductor tube in the direction intersecting the direction in which the pair of sandwiching portions face each other and the protruding direction of the sandwiching portion from the connecting portion. Connection device characterized. A closed position that is located on the opposite side of the connecting portion across the feeder line that is sandwiched by the sandwiching portion and prevents the feeder line from coming off, and a direction in which the sandwiching portion protrudes from the connecting portion with respect to the feeder line that is sandwiched by the sandwiching portion 2. The connection device according to claim 1, further comprising a retaining member attached to the conductive block so as to be freely displaceable between the open position retracted so as not to be positioned . Each of the conductor tubes is made of a conductive material and has a tube shape and is arranged in a nested manner so that a high-frequency current flows in the axial direction. The conductor tube is made of an insulator and covers the outermost conductor tube. Between them, there is a connection device to which a high-frequency power supply line is connected, which is made of an insulating material and is provided with an insulator that insulates the conductor tubes and supports the inner conductor tube with respect to the outer conductor tube. And
An insertion port that is made of a conductive material and is inserted in a state where at least one end of the power supply line has an insulating coating removed, and a contact part that is in contact with each of the second and subsequent conductor tubes from the outside of the power supply line inserted into the insertion port; Each having a conductive block electrically and mechanically connected to the feeder line by fitting the outermost conductor tube to the insertion port,
The insertion port is one in which the one end is inserted in a state where at least one of the inner peripheral surface and the outer peripheral surface of each conductor tube is exposed at one end of the feeder line so that at least the insulating coating is removed,
The conductive block has a sandwiching portion made of a conductive material and forming an insertion opening therebetween and a connecting portion that connects one end of the sandwiching portion to each other. A holding body that holds the conductor tube by fitting between the sandwiching portions, and a contact body that is made of a conductive material and that is in contact with the holding body and is in contact with the second and subsequent conductor tubes from the outside. Have
The contact body is provided for each of the second and subsequent conductor tubes from the outside and is fitted into the corresponding conductor tube, or the corresponding conductor tube is fitted into the conductor tube electrically and mechanically. A connecting device having a fitting portion to be connected and slidably supported in a fitting direction of the fitting portion with respect to a holding body . An insertion slot and a contact portion are provided for each of two feeder lines,
The connection device according to any one of claims 1 to 3, wherein the feeder lines inserted into the insertion opening are electrically connected to each other .

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