Power cable connection device and method for manufacturing power cable connection device

Abstract

The invention provides a power cable connecting device and a manufacturing method of the power cable connecting device. The power cable connecting device can restrain stress generated in an insulating pipe. A power cable connection device (1) is provided with: an insulating tube (21) into which a power cable (10) is inserted; a tube member (22) inserted and disposed inside the insulating tube (21) and surrounding the power cable (10); and an attachment member (23) which is disposed on the outer peripheral side of the pipe member (22), and which is partially embedded in the insulating tube (21) such that an attachment surface (233) attached to another member is exposed from the insulating tube (21).

Description

Technical Field

[0001] The present invention relates to a power cable connection device and a method for manufacturing the power cable connection device. Background Art

[0002] A power cable connection device for connecting a power cable to other electric wires or the like is disclosed in Patent Document 1. The power cable connection device described in Patent Document 1 includes: an insulating tube made of a polymer material; a tube member disposed inside the insulating tube; and a mounting member that surrounds the tube member from the outer peripheral side and is partially embedded in the insulating tube. The insulating tube has: an insulator; a first semiconductive portion formed between the insulator and the tube member; and a second semiconductive portion formed between the insulator and the mounting member.

[0003] Here, the insulator, the first semiconductive portion, the second semiconductive portion, the tube member, and the mounting member are integrated by molding. Therefore, the first semiconductive portion is fixed to both the insulator and the tube member, and the second semiconductive portion is fixed to both the insulator and the mounting member.

[0004] Prior Art Documents

[0005] Patent Documents

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 2016-116279 Summary of the Invention

[0007] Problems to be Solved by the Invention

[0008] In the power cable connection device described in Patent Document 1, stress may be generated at a portion between the tube member and the mounting member in the insulating tube due to the difference in the coefficient of thermal expansion of the tube member, the insulating tube, and the tube member.

[0009] The present invention has been made in view of the above circumstances, and an object thereof is to provide a power cable connection device and a method for manufacturing the power cable connection device that can suppress stress generated in the insulating tube.

[0010] Means for Solving the Problems

[0011] To achieve the above object, the present invention provides a power cable connection device including: an insulating tube into which a power cable is inserted; a tube member that is inserted and disposed inside the insulating tube and surrounds the power cable; and a mounting member that is disposed on the outer peripheral side of the tube member and is partially embedded in the insulating tube so that a mounting surface for mounting on other components is exposed from the insulating tube.

[0012] In addition, in order to achieve the above object, the present invention provides a method for manufacturing a power cable connection device, the power cable connection device including: an insulating tube into which a power cable is inserted; a tube member disposed inside the insulating tube and surrounding the power cable; and a mounting member disposed on the outer peripheral side of the tube member and partially buried in the insulating tube such that a mounting surface for mounting to another member is exposed from the insulating tube. The method for manufacturing the power cable connection device includes: a step of forming the insulating tube; and a step of inserting the tube member inside the insulating tube after forming the insulating tube.

[0013] Advantages of the Invention

[0014] According to the present invention, it is possible to provide a power cable connection device and a method for manufacturing a power cable connection device that can suppress stress generated in the insulating tube. Description of the Drawings

[0015] Figure 1 is a cross-sectional view of the power cable connection device in the first embodiment.

[0016] Figure 2 is Figure 1 an enlarged view of a part of

[0017] Figure 3 is Figure 2 a cross-sectional view taken along line III-III of

[0018] Figure 4 is Figure 1 a cross-sectional view taken along line IV-IV of

[0019] Figure 5 is a cross-sectional view of the insulating tube, the mounting member, and the tube member before assembly in the first embodiment.

[0020] Figure 6 is a cross-sectional view of the insulating tube, the mounting member, and the tube member after assembly in the first embodiment.

[0021] Figure 7 is an enlarged cross-sectional view of a part of the power cable connection device in the second embodiment.

[0022] Reference Signs

[0023] 1—Power cable connection device, 10—Power cable, 21—Insulating tube, 211c—Restricting surface, 22—Tube member, 221—Corner portion, 23—Mounting member, 233—Mounting surface. Detailed Description of the Invention

[0024] [First Embodiment]

[0025] Refer toFigures 1 to 6 A description is given of the first embodiment of the present invention. In addition, the embodiments described below are shown as preferred specific examples for implementing the present invention, and there are also parts that specifically illustrate various technically preferred technical matters, but the technical scope of the present invention is not limited to this specific manner.

[0026] (Power cable connection device 1)

[0027] Figure 1 is a cross-sectional view of the power cable connection device 1 of this embodiment. As Figure 1 shown, the power cable connection device 1 includes a main body portion 2, a cover 3, and a connection portion 4. The main body portion 2 ensures electrical insulation between the power cable 10 after the layer is peeled off and the components disposed around the power cable 10. The cover 3 covers a part of the main body portion 2. The connection portion 4 is a component for connecting the power cable 10 to the outside of the power cable connection device 1. Hereinafter, the direction in which the central axis of the power cable 10 (i.e., Figure 1 the single-dot chain line) extends is referred to as the axial direction X. In addition, the side of the power cable 10 on the axial direction X where it is inserted into the power cable connection device 1 is referred to as the front end side X1, and the opposite side is referred to as the base end side X2. In addition, when simply referred to as the "radial direction", it means the radial direction centered on the central axis of the power cable 10. In addition, the side in the radial direction and the direction toward the central axis of the power cable 10 is referred to as the inner peripheral side, and the opposite side is referred to as the outer peripheral side.

[0028] (Main body portion 2)

[0029] The main body portion 2 includes an insulating tube 21, a tube member 22, a mounting member 23, and a flange member 24.

[0030] The insulating tube 21 includes an insulator 210 and a semiconductive portion provided on the surface of the insulator 210 (in this embodiment, a first semiconductive portion 211, a second semiconductive portion 212, and a third semiconductive portion 213).

[0031] The insulator 210 is formed, for example, by shaping a polymer-based material into a tubular shape and has flexibility. As the polymer-based material constituting the insulator 210, for example, silicone rubber, ethylene propylene rubber (EPM), ethylene propylene diene monomer rubber (EPDM), etc. can be used. In particular, as the material of the insulator 210, by using a material with relatively high tear strength, it is easy to suppress the generation of cracks in the insulator 210. In addition, as the material of the insulator 210, by using a material with relatively low elastic modulus, it is easy to insert the power cable 10 into the insulator 210. The inner diameter of the portion of the inner peripheral surface of the insulating tube 21 closer to the proximal end side X2 than the tube member 22 is smaller than the outer diameter of the power cable 10 inserted inside it in the free state before the power cable 10 is inserted into the insulating tube 21, and the power cable 10 inserts into the insulating tube 21 while expanding the portion of the inner peripheral surface of the insulating tube 21 closer to the proximal end side X2 than the tube member 22.

[0032] On the outer peripheral portion of the insulator 210, annular umbrella portions 210a protruding outward are provided at a plurality of positions in the axial direction X at a predetermined interval. By forming a plurality of umbrella portions 210a on the insulator 210, the creepage distance of the outer peripheral surface of the insulator 210 can be ensured, and the occurrence of creepage discharge along the surface of the insulator 210 can be suppressed.

[0033] The insulator 210 is formed by insert molding in a mold by arranging a mounting member 23 having a first semiconductive portion 211, a second semiconductive portion 212, and a third semiconductive portion 213 formed on its surface. Thus, the insulator 210 is formed to be fixed to the first semiconductive portion 211, the second semiconductive portion 212, and the third semiconductive portion 213, respectively.

[0034] The first semiconductive portion 211, the second semiconductive portion 212, and the third semiconductive portion 213 are formed of an elastic semiconductive material having conductivity by dispersing conductive powder such as carbon in silicone rubber, EPM, EPDM, etc. The first semiconductive portion 211, the second semiconductive portion 212, and the third semiconductive portion 213 suppress the concentration of the electric field around them.

[0035] The first semiconductive portion 211 is provided in a film shape on the inner peripheral surface of the insulator 210 and is interposed between the insulator 210 and the tube member 22. The first semiconductive portion 211 has an enclosing portion 211a formed in a cylindrical shape so as to enclose the outer peripheral surface of the tube member 22 and an extending portion 211b extending from the enclosing portion 211a toward the proximal end side X2. The enclosing portion 211a encloses the portion of the tube member 22 other than the front end portion from the outer peripheral side. The extending portion 211b is formed to be closer to the inner peripheral side than the tube member 22 and has a thickness larger than that of the enclosing portion 211a. The extending portion 211b is interposed between the power cable 10 inserted inside the tube member 22 and the insulator 210.

[0036] Figure 2 is toFigure 1 An enlarged view of a part. As Figure 2 shown, the surface of the front end side X1 of the extending setting portion 211b constitutes a restricting surface 211c that abuts against the end surface of the base end side X2 of the pipe member 22. As will be described later, the restricting surface 211c abuts against the end surface of the base end side X2 of the pipe member 22 when the pipe member 22 is inserted and disposed in the insulating pipe 21, thereby restricting the further insertion of the pipe member 22 into the insulating pipe 21. The first semiconductive portion 211 is formed by molding or the like.

[0037] As Figure 1 and Figure 2 shown, the second semiconductive portion 212 is provided in a film shape so as to be interposed between the insulator 210 and the mounting member 23. The second semiconductive portion 212 is formed, for example, by insert molding in which the mounting member 23 is disposed in a mold. Thereby, the second semiconductive portion 212 is fixed to the mounting member 23.

[0038] As Figure 1 shown, the third semiconductive portion 213 is formed inside the end portion of the base end side X2 of the insulator 210 and is annular. The third semiconductive portion 213 contacts the outer peripheral surface exposed in the power cable 10 inserted into the insulating pipe 21. The third semiconductive portion 213 is formed by molding or the like.

[0039] The pipe member 22 is formed, for example, by forming a metal such as brass or aluminum alloy into a cylindrical shape (specifically, a circular cylindrical shape) that is long in the axial direction X. The pipe member 22 is made of a material having a higher rigidity than the insulating pipe 21. The pipe member 22 is disposed on the inner peripheral side of the insulating pipe 21 to reinforce the flexible insulating pipe 21.

[0040] The pipe member 22 is inserted into an insertion hole portion 21a formed by a portion of the inner peripheral surface of the insulating pipe 21 from the restricting surface 211c to the front end side X1. The insertion hole portion 21a is a cylindrical hole and is formed by the inner peripheral surface of the surrounding portion 211a of the first semiconductive portion 211 and the inner peripheral surface of the insulator 210 located on the front end side X1 thereof.

[0041] In this embodiment, the pipe member 22 is press-fitted into the insertion hole portion 21a of the insulating pipe 21. That is, in a state where the pipe member 22 is not inserted into the insertion hole portion 21a (i.e., the free state), the inner diameter of the insertion hole portion 21a is smaller than the outer diameter of the pipe member 22, and the pipe member 22 inserts into the insertion hole portion 21a while expanding the insertion hole portion 21a.

[0042] In this way, the pipe component 22 is assembled to the insulating pipe 21 by the method of being installed after insertion, so that the pipe component 22 contacts the inner surface of the insertion hole portion 21a. On the other hand, it is not fixed to the inner surface of the insertion hole portion 21a. Different from this method, assuming that the pipe component 22 is fixed to the inner surface of the insertion hole portion 21a, the inner peripheral side of the portion of the insulating pipe 21 between the pipe component 22 and the mounting component 23 is fixed to the pipe component 22, and the outer peripheral side is fixed to the mounting component 23. Therefore, the expansion and contraction in both the inner peripheral side and the outer peripheral side are hindered, and the stress is likely to increase. On the other hand, as in this method, when the pipe component 22 and the insulating pipe 21 are not fixed, the stretching of the portion of the insulating pipe 21 between the pipe component 22 and the mounting component 23 by the pipe component 22 is suppressed, so the stress is reduced.

[0043] The end portion of the front end side X1 of the pipe component 22 protrudes from the insulating pipe 21 and is electrically connected to the power cable 10 via a connection portion 4 described later. In addition, the end portion of the base end side X2 of the pipe component 22 is radially opposed to the mounting component 23 with the insulating pipe 21 interposed therebetween. The inner diameter of the pipe component 22 is formed to be larger than the outer diameter of the portion of the power cable 10 disposed inside the pipe component 22. Thus, it is easy to insert the power cable 10 inside the pipe component 22.

[0044] Figure 3 is Figure 2 a sectional view taken along the III-III line of. As Figure 2 and Figure 3 shown, the mounting component 23 is arranged on the outer peripheral side compared with the pipe component 22. The mounting component 23 is formed in a cylindrical shape that surrounds the portion of the base end side X2 of the pipe component 22 from the outer peripheral side. As Figure 2 shown, the mounting component 23 includes: a cylindrical portion 231 formed in a cylindrical shape; and an annular protruding portion 232 formed to protrude from the end portion of the base end side X2 of the cylindrical portion 231 toward the outer peripheral side.

[0045] The mounting component 23 is made of a material having a higher rigidity than the insulating pipe 21, such as a metal such as brass or aluminum alloy, and is connected to the ground potential in the use state of the power cable connection device 1. The thermal expansion coefficients of the pipe component 22 and the mounting component 23 are smaller than the thermal expansion coefficient of the insulator 210.

[0046] The mounting component 23 is partially buried in the insulating pipe 21 in such a way that the surface for mounting the flange component 24, that is, the mounting surface 233, is exposed from the insulating pipe 21. An internal threaded hole 234 that opens on the mounting surface 233 is formed in the mounting component 23. The internal threaded hole 234 is threadedly engaged with a bolt B1 for fixing the flange component 24 to the mounting component 23.

[0047] The flange member 24 is formed in a ring shape. The flange member 24 is fixed to the mounting member 23 by bolts B1 in a state where it coincides with the mounting surface 233. A bolt insertion hole 241 for inserting a bolt (not shown) for mounting the flange member 24 to the mounting object 100 is formed in the flange member 24. Further, an internal threaded hole 242 that opens on the surface on the base end side X2 is formed in the flange member 24. A bolt B2 for fixing the cover 3 to the flange member 24 is threadedly engaged with the internal threaded hole 242. A sealing portion 11 for ensuring watertightness is disposed between the flange member 24 and each of the mounting member 23 and the cover 3.

[0048] (Cover 3)

[0049] As Figure 1 shown, the cover 3 is formed in a cylindrical shape from brass, aluminum alloy, etc., and covers the main body portion 2 protruding from the flange member 24 toward the base end side X2 from the outer peripheral side. A cover flange portion 31 protruding toward the outer peripheral side is formed at the end portion on the front end side X1 of the cover 3. The cover flange portion 31 is fixed to the flange member 24 using the bolt B2.

[0050] The end portion on the base end side X2 of the cover 3 and the power cable 10 are sealed by a sealing portion 12. The sealing portion 12 is formed by winding a polyethylene tape, an epoxy tape, etc. provided with an adhesive material around the outer peripheral portion of the power cable 10, and watertightly seals between the cover 3 and the power cable 10.

[0051] (Connection portion 4)

[0052] The connection portion 4 includes a conductor connection rod 41, a high-voltage shield 42, a fixed terminal 43, and a common fastening nut 44. A riveting hole 411 that opens on the base end side X2 is formed in the conductor connection rod 41. The cable conductor 101 exposed from the power cable 10 is inserted into the riveting hole 411, and the end portion on the base end side X2 of the conductor connection rod 41 is riveted toward the cable conductor 101. Thus, the conductor connection rod 41 is connected to the power cable 10. Further, an external threaded portion 412 protruding toward the front end side X1 is formed in the conductor connection rod 41. The external threaded portion 412 penetrates through the high-voltage shield 42 and the fixed terminal 43, respectively.

[0053] The high-voltage shield 42 is made of a conductor and has a bottomed cylindrical shape that opens on the base end side X2. The high-voltage shield 42 is externally fitted to the front end portion of the insulating tube 21 that protrudes from the tube member 22 toward the front end side X1.

[0054] The fixed terminal 43 has a plate shape and overlaps with the high-voltage shield 42 from the front end side X1. A connection hole 431 for connecting to an external wire or the like is formed in the fixed terminal 43. The fixed terminal 43 and the high-voltage shield 42 are commonly fastened between the conductor connection rod 41 and the common fastening nut 44, whereby the fixed terminal 43, the high-voltage shield 42, and the conductor connection rod 41 are electrically connected to each other.

[0055] (Power cable 10)

[0056] Figure 4 is Figure 1 a VI-VI line view sectional view. As Figure 4 shown, the power cable 10 sequentially includes a cable conductor 101, a cable inner semiconductive layer 102, a cable insulator 103, a cable outer semiconductive layer 104, a cable shielding layer 105, and a cable sheath 106 from the center. The power cable 10 is layer-stripped in such a manner that the cable conductor 101, the cable insulator 103, the cable outer semiconductive layer 104, and the cable shielding layer 105 are sequentially exposed from the front end side X1 of the axial direction X.

[0057] The cable conductor 101 is formed by stranding a plurality of wire rods, for example. The cable inner semiconductive layer 102 and the cable outer semiconductive layer 104 are provided to alleviate the concentration of the electric field, and are formed by extrusion molding of a polymer-based material containing conductive powders such as carbon, for example. The cable outer semiconductive layer 104 is electrically connected to the cable shielding layer 105 and contacts the third semiconductive portion 213 as Figure 1 shown. Thereby, the third semiconductive portion 213 is grounded via the cable outer semiconductive layer 104 and the cable shielding layer 105. The cable insulator 103 and the cable sheath 106 are formed by extrusion molding of an insulating material, for example. The cable shielding layer 105 is composed of, for example, a wire wound laterally around the cable outer semiconductive layer 104 and is grounded during use.

[0058] (Usage example of the power cable connection device 1)

[0059] Next, a usage example of the power cable connection device 1 of this embodiment will be described.

[0060] The power cable connection device 1 is installed on the roof of a railway vehicle, for example. In this case, the wall portion constituting the roof of the railway vehicle, the housing for accommodating the power cable connection device 1 provided on the roof of the railway vehicle, etc. become the installation object 100. The power cable connection device 1 can be used for applications such as electrical connection between adjacent railway vehicles and electrical connection with a pantograph, for example.

[0061] (Manufacturing method of the power cable connection device 1)

[0062] Next, with reference to Figure 5 and Figure 6 an example of the method for installing the pipe member 22 onto the insulating pipe 21 in the manufacturing method of the power cable connection device 1 will be described.

[0063] Figure 5 is a sectional view before the assembly of the insulating pipe 21 and the mounting member 23 with the pipe member 22. Figure 6It is a cross-sectional view of the assembled insulating tube 21, the mounting member 23, and the tube member 22. When assembling the tube member 22 to the insulating tube 21, first, the insulating tube unit 5 in which the mounting member 23 and the insulating tube 21 are integrated and the tube member 22 are respectively prepared. The insulating tube unit 5 is integrally formed by molding the insulator 210 through insert molding in which the first semiconductive portion 211, the second semiconductive portion 212, and the third semiconductive portion 213 formed by molding the mounting member 23 are arranged in the mold.

[0064] Next, the tube member 22 is inserted into the insertion hole portion 21a from the opening on the front end side X1 of the insertion hole portion 21a of the insulating tube 21. In this method, as described above, since the outer diameter of the tube member 22 is larger than the inner diameter of the insertion hole portion 21a in the free state, the tube member 22 is inserted (specifically, pressed in) into the insertion hole portion 21a while elastically expanding the insertion hole portion 21a. The tube member 22 is inserted into the insertion hole portion 21a until it abuts against the restricting surface 211c. Thereby, the positioning of the tube member 22 with respect to the axial direction X of the insulating tube 21 is completed.

[0065] As described above, the tube member 22 is assembled to the insulating tube 21.

[0066] (Functions and effects of the first embodiment)

[0067] In the power cable connecting device 1 of this method, the tube member 22 is inserted and disposed inside the insulating tube 21. Therefore, the fixing of the tube member 22 to the insulating tube 21 is suppressed, and the generation of stress in the insulating tube 21 due to the difference in the linear expansion coefficients between the insulating tube 21 and the tube member 22 is suppressed. For example, when the insulating tube 21 is expected to expand more toward the outer peripheral side than the tube member 22 and the mounting member 23, the stress generated in the insulating tube 21 is suppressed because the inner peripheral portion of the insulating tube 21 is stretched by the tube member 22.

[0068] In addition, the tube member 22 is pressed into the inside of the insulating tube 21. Therefore, the close contact between the tube member 22 and the insulating tube 21 is improved, and the intrusion of moisture between the tube member 22 and the insulating tube 21 is suppressed.

[0069] In addition, the insulating tube 21 has a restricting surface 211c that abuts against the end surface on the base end side X2 of the tube member 22 to restrict the insertion of the tube member 22 with respect to the insulating tube 21. Therefore, the positioning of the tube member 22 with respect to the axial direction X of the insulating tube 21 becomes easy.

[0070] As described above, according to this method, it is possible to provide a power cable connecting device and a manufacturing method of a power cable connecting device that can suppress the stress generated in the insulating tube.

[0071] [Second embodiment]

[0072] Refer to Figure 7A description is given of a second embodiment of the present invention. Figure 7 It is an enlarged cross-sectional view of a part of the power cable connecting device 1 of this embodiment.

[0073] This embodiment is a mode in which the shape of the pipe member 22 is changed with respect to the first embodiment. Specifically, the corner portion 221 between the end face and the outer peripheral face on the proximal end side X2 of the pipe member 22 of this embodiment is formed into a rounded corner. In addition, other corner portions of the pipe member 22 may also be formed into rounded corners.

[0074] Other structures of this embodiment are the same as those of the first embodiment.

[0075] In addition, among the reference numerals used in the drawings after the second embodiment, as long as there is no special indication, the same reference numerals as those used in the foregoing embodiments indicate the same constituent elements and the like as those in the foregoing embodiments.

[0076] (Actions and effects of the second embodiment)

[0077] In this embodiment, the corner portion 221 between the end face and the outer peripheral face on the proximal end side X2 of the pipe member 22 is formed into a rounded corner. Therefore, when the pipe member 22 is inserted into the insertion hole portion 21a, the corner portion 221 becomes a guide member and is easily inserted. In addition, when the pipe member 22 is inserted into the insertion hole portion 21a, it is possible to suppress the inner wall of the insertion hole portion 21a from being cut by the corner portion 221. Moreover, the electric field concentration around the corner portion 221 of the pipe member 22 is also suppressed.

[0078] In addition, it has the same actions and effects as the first embodiment.

[0079] (Summary of the embodiment)

[0080] Next, the technical idea grasped from the embodiments described above is described by citing the symbols and the like in the embodiments. However, the symbols and the like in the following description are not limited to specifically representing the constituent elements in the claims as the components and the like in the embodiments.

[0081] [1] A power cable connecting device 1 includes: an insulating tube 21 into which a power cable 10 is inserted inside; a pipe member 22 that is inserted and disposed inside the insulating tube 21 and surrounds the power cable 10; and a mounting member 23 that is disposed on the outer peripheral side with respect to the pipe member 22 and is partially buried in the insulating tube 21 in such a manner that a mounting surface 233 for mounting on other components is exposed from the insulating tube 21.

[0082] [2] The power cable connecting device 1 according to [1], wherein the pipe member 22 is press-fitted inside the insulating tube 21.

[0083] [3] The power cable connection device 1 according to [1] or [2], wherein a corner portion 221 between an end surface on one side of the pipe member 22 inserted into the inner side of the insulating pipe 21 and an outer peripheral surface is formed into a rounded corner.

[0084] [4] The power cable connection device 1 according to any one of [1] to [3], wherein the insulating pipe 21 has a restricting surface 211c that abuts against an end surface on one side of the pipe member 22 inserted into the inner side of the insulating pipe 21 and restricts insertion of the pipe member 22 relative to the insulating pipe 21.

[0085] [5] A manufacturing method of a power cable connection device 1, the power cable connection device 1 including: an insulating pipe 21 into which a power cable 10 is inserted inside; a pipe member 22 disposed inside the insulating pipe 21 and surrounding the power cable 10; and a mounting member 23 disposed on the outer peripheral side relative to the pipe member 22 and partially buried in the insulating pipe 21 such that a mounting surface 233 for mounting to another component exposes from the insulating pipe 21, the manufacturing method of the power cable connection device 1 including: a step of forming the insulating pipe 21; and a step of inserting the pipe member 22 into the inner side of the insulating pipe 21 after forming the insulating pipe 21.

[0086] [6] The manufacturing method of the power cable connection device 1 according to [5], wherein the step of inserting the pipe member 22 into the inner side of the insulating pipe 21 is a step of pressing the pipe member 22 into the inner side of the insulating pipe 21.

[0087] [7] The manufacturing method of the power cable connection device 1 according to [5] or [6], wherein a corner portion 221 between an end surface on one side of the pipe member 22 inserted into the inner side of the insulating pipe 21 and an outer peripheral surface is formed into a rounded corner.

[0088] [8] The manufacturing method of the power cable connection device 1 according to any one of [5] to [7], wherein the insulating pipe 21 has a restricting surface 211c that abuts against an end surface on one side of the pipe member 22 inserted into the inner side of the insulating pipe 21, thereby restricting insertion of the pipe member 22 relative to the insulating pipe 21.

[0089] (Supplementary Note)

[0090] As described above, the embodiments of the present invention have been described, but the above embodiments do not limit the invention recited in the claims. In addition, it should be noted that the combinations of features described in the embodiments are not necessarily all essential means for solving the problems of the invention. In addition, the present invention can be appropriately modified and implemented without departing from its gist.

Claims

1. A power cable connection device, characterized in that, Comprising: An insulating tube, into which a power cable is inserted inside; A tube component, which is inserted and disposed inside the insulating tube and surrounds the power cable; and A mounting component, which is disposed on the outer peripheral side relative to the tube component and has a part buried in the insulating tube in such a way that a mounting surface for mounting on other components is exposed from the insulating tube.

2. The power cable connection device according to claim 1, wherein: The tube component is press-fitted inside the insulating tube.

3. The power cable connection device according to claim 1 or 2, wherein: The corner between the end face on the side where the tube component is inserted inside the insulating tube and the outer peripheral surface is rounded.

4. The power cable connection device according to claim 1 or 2, wherein: The insulating tube has a limiting surface, which abuts against the end face on the side where the tube component is inserted inside the insulating tube and limits the insertion of the tube component relative to the insulating tube.

5. A manufacturing method of a power cable connection device, the power cable connection device comprising: an insulating tube into which a power cable is inserted inside; A tube component, which is disposed inside the insulating tube and surrounds the power cable; And a mounting component, which is disposed on the outer peripheral side relative to the tube component and has a part buried in the insulating tube in such a way that a mounting surface for mounting on other components is exposed from the insulating tube, The manufacturing method of the power cable connection device comprises: A step of forming the insulating tube; and A step of inserting the tube component inside the insulating tube after forming the insulating tube.

6. The manufacturing method of the power cable connection device according to claim 5, wherein: The step of inserting the tube component inside the insulating tube is a step of press-fitting the tube component inside the insulating tube.

7. The manufacturing method of the power cable connection device according to claim 5 or 6, wherein: The corner between the end face on the side where the tube component is inserted inside the insulating tube and the outer peripheral surface is rounded.

8. The manufacturing method of the power cable connection device according to claim 5 or 6, wherein: The insulating tube has a limiting surface, which abuts against the end face on the side where the tube component is inserted inside the insulating tube, thereby limiting the insertion of the tube component relative to the insulating tube.

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