Insulation displacement connector device, connection structure of insulated core wire, and insulated core wire connection method

Abstract

To provide an insulation displacement connector device, capable of more firmly holding an insulated core wire.SOLUTION: An insulation displacement connector device 1 includes: a housing 10 that has an insulated core wire insertion hole; a main contact 20 that has first slots corresponding to respective insulated core wires and that is configured to bond a pair of the insulated core wires under pressure such that part of insulation coating of each insulated core wire is peeled to be conducted with a conductor core wire in the first slot; and a pair of gripping members 30A, 30B that are provided corresponding to the respective insulated core wires, that each have a second slot, and that are configured to peel part of the insulation coating of each insulated core wire to grip the insulated core wire in the second slot. While the insulated core wires are inserted into the housing 10, the main contact 20 and the gripping members 30A, 30B arranged in the housing 10 are pressed so that the insulated core wires are electrically connected and the insulated core wires are held.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a pressure-displacement connector device, an insulated core wire connecting structure, and an insulated core wire connecting method. [Background technology]

[0002] IDC connectors (Insulation Displacement Connectors) are widely used as a method for connecting an insulated core wire, which has a conductor core wire and an insulating coating that covers the conductor core wire, to a terminal, or as a method for connecting such insulated core wires together (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 52-135088 Summary of the Invention [Problem to be solved by the invention]

[0004] FIG. 9 is a schematic diagram showing how insulated core wires extending coaxially are connected to each other by a pressure-displacement connector device. FIG. 10 is a perspective view showing a contact used in the pressure-displacement connector device shown in FIG. 9. The pressure-displacement connector device 201 has a contact 220 made of a conductive material and a housing 210 that accommodates the contact 220. The contact 220 is formed in a U-shape and has slots 223 at both ends. With the ends of a pair of insulated core wires 200A, 200B inserted into the housing 210, the insulated core wires 200A, 200B are pressed at both ends of the contact 220. As a result, the insulated core wires 200A, 200B enter the slot 223, the coating of each of the insulated core wires 200A, 200B is stripped, and the conductor core wire in the insulated core wire is gripped in the slots 223, 223 of the contact 220. The conductor cores of both insulated core wires 200A, 200B are electrically connected via contact 220.

[0005] In a pressure-displacement connector as shown in FIG. 9, each insulated core wire is held by being pinched in a contact slot at one point, which results in low pull-out strength and the problem of the insulated core wires being pulled out.

[0006] SUMMARY OF THE PRESENT INVETION The present invention has been made in consideration of the above problems, and has an object to provide a pressure-displacement connector device that can hold an insulated core wire more firmly. [Means for solving the problem]

[0007] According to one aspect of the present invention, there is provided an insulation displacement connector device for connecting a pair of insulated core wires arranged in opposite directions, each of which has a conductor core wire and an insulating coating surrounding the conductor core wire, the insulation displacement connector device comprising: a housing having insertion holes into which the pair of insulated core wires can be inserted from opposite sides; a main contact arranged in the housing so as to be able to advance toward the insertion hole, having first slots corresponding to each of the pair of insulated core wires, and configured to strip a portion of the insulating coating of the pair of insulated core wires to press the pair of insulated core wires so as to be conductive with the conductor core wire in the first slot; and a pair of gripping members arranged in the housing so as to be able to advance toward the insertion hole, corresponding to each of the pair of insulated core wires, each having a second slot, and configured to strip a portion of the insulating coating of each of the pair of insulated core wires to grip the insulated core wire in the second slot and the conductor core wire in the insulated core wire; and with the pair of insulated core wires inserted into the insertion hole, the insulation displacement connector device electrically connects the insulated core wires and holds the insulated core wires by pressing the main contact and the gripping member arranged in the housing. According to the above aspect, since the insulated core wires are crimped by the pair of gripping members, each insulated core wire and the conductor core wire inside the insulated core wire are held at multiple points, and the insulated core wires can be more firmly fixed. In addition, since the crimping is performed using the main contact and the gripping member, the crimping is performed in multiple steps, so the pressing force required for one crimping operation is reduced, and the worker can easily perform the crimping operation.

[0008] According to one aspect of the present invention, the housing has insertion holes into which a pair of insulated core wires can be inserted from opposite sides, a main contact guide hole that guides the main contact when pressed, causing the main contact to strip a portion of the insulating coating of the pair of insulated core wire to position the conductor core wire in the first slot, and a gripping member guide hole that guides the gripping member when pressed, causing the gripping member to strip a portion of the insulating coating of the corresponding insulated core wire to position the conductor core wire in the second slot. According to the above aspect, the contact and the gripping member are guided by the main contact guide hole and the gripping member guide hole of the housing, respectively, so that the insulated core wires can be connected accurately.

[0009] According to one aspect of the invention, each of the pair of gripping members has a plurality of second slots, with each gripping member gripping the insulated conductor at a plurality of positions. According to the above aspect, since the gripping member has a plurality of second slots, each insulated core wire is crimped at three or more points, thereby ensuring a tensile strength equal to or greater than that when the insulated core wires are connected by a crimping sleeve.

[0010] According to one aspect of the invention, the first slotted surface of the main contact and the second slotted surface of the gripping member have substantially the same shape. According to the above aspect, the pressure welding can be performed using members of the same shape, and the tensile resistance in each pressure welding portion can be made uniform, and the force required for pressure welding can be made uniform.

[0011] According to one aspect of the invention, the main contact and the gripping member are formed from the same conductive material. According to the above aspect, the pressure welding can be performed using members made of the same material, the tensile resistance at each pressure welding portion can be made uniform, and the manufacturing effort can be reduced.

[0012] According to one aspect of the present invention, there is provided a connection structure in which a pair of insulated core wires, each of which has a conductor core surrounded by an insulating coating, are connected by the above-mentioned connector device, characterized in that the pair of insulated core wires are each held by a main contact and the conductor cores of the pair of insulated core wires are electrically connected, and the pair of insulated core wires are each held by each holding member.

[0013] According to one aspect of the present invention, there is provided a method for connecting a pair of insulated core wires using an insulation displacement connector device, the insulation displacement connector device comprising: a housing having insertion holes into which the pair of insulated core wires can be inserted from opposite sides; a main contact arranged in the housing so as to be able to advance toward the insertion hole, the main contact having a first slot corresponding to each of the pair of insulated core wires; and a gripping member arranged in the housing so as to be able to advance toward the insertion hole, the gripping member provided corresponding to each of the pair of insulated core wires, the method including the steps of inserting the pair of insulated core wires into the insertion hole; pressing the main contact arranged in the housing with a jig to pressure-weld the pair of insulated core wires; and pressing each of the gripping members arranged in the housing with the jig to grip each of the pair of insulated core wires with each gripping member.

[0014] According to one aspect of the present invention, there is provided a method for connecting a pair of insulated core wires using an insulation displacement connector device, the insulation displacement connector device comprising: a housing having insertion holes into which the pair of insulated core wires can be inserted from opposite sides; a main contact arranged in the housing so as to be able to advance toward the insertion hole, the main contact having a first slot corresponding to each of the pair of insulated core wires; and a gripping member arranged in the housing so as to be able to advance toward the insertion hole, the gripping member provided corresponding to each of the pair of insulated core wires. The insulated core wire connecting method includes the steps of: inserting one of the insulated core wires into the insertion hole; pressing one of the gripping members arranged on the housing with a jig to grip one of the insulated core wires with the one gripping member; inserting the other of the insulated core wires into the insertion hole; pressing the main contact arranged on the housing with a jig to pressure-weld the pair of insulated core wires; and pressing the other gripping member arranged on the housing with the jig to grip the other insulated core wire with the other gripping member. Effect of the Invention

[0015] According to the present invention, there is provided a insulation displacement connector device capable of more firmly holding an insulated core wire. [Brief description of the drawings]

[0016] [Figure 1] 1 is a perspective view showing a insulation displacement connector device according to a first embodiment of the present invention; [Diagram 2] 1 is a cross-sectional view showing an insulation displacement connector device according to a first embodiment of the present invention. [Diagram 3] 1 is a perspective view showing only a main contact and a gripping member of the insulation displacement connector according to the first embodiment; [Figure 4A] FIG. 2 is a perspective view illustrating a method of connecting a pair of insulated core wires using the insulation displacement connector device of the first embodiment. [Figure 4B] FIG. 2 is a perspective view illustrating a method of connecting a pair of insulated core wires using the insulation displacement connector device of the first embodiment. [Figure 4C]FIG. 2 is a perspective view illustrating a method of connecting a pair of insulated core wires using the insulation displacement connector device of the first embodiment. [Figure 4D] FIG. 2 is a perspective view illustrating a method of connecting a pair of insulated core wires using the insulation displacement connector device of the first embodiment. [Figure 4E] FIG. 2 is a perspective view illustrating a method of connecting a pair of insulated core wires using the insulation displacement connector device of the first embodiment. [Figure 5A] 4 is a vertical cross-sectional view illustrating a method of connecting a pair of insulated core wires using the insulation displacement connector device of the first embodiment. [Figure 5B] 4 is a vertical cross-sectional view illustrating a method of connecting a pair of insulated core wires using the insulation displacement connector device of the first embodiment. [Figure 5C] 4 is a vertical cross-sectional view illustrating a method of connecting a pair of insulated core wires using the insulation displacement connector device of the first embodiment. [Figure 5D] 4 is a vertical cross-sectional view illustrating a method of connecting a pair of insulated core wires using the insulation displacement connector device of the first embodiment. [Figure 5E] 4 is a vertical cross-sectional view illustrating a method of connecting a pair of insulated core wires using the insulation displacement connector device of the first embodiment. [Figure 6] FIG. 11 is a perspective view showing a insulation displacement connector device according to a second embodiment of the present invention. [Figure 7] 1 is a graph showing the relationship between the moving distance and the pressing force when an insulated core wire is simultaneously pressure-welded into two pressure-welding slots of a contact. [Figure 8] 1 is a graph showing the relationship between the number of slotted contacts and the pull-out strength. [Figure 9] 1 is a schematic diagram showing how insulated core wires are connected to each other by a pressure-displacement connector device. FIG. [Figure 10] 10 is a perspective view showing a contact used in the insulation displacement connector device shown in FIG. 9. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, an embodiment of the insulation displacement connector device and the insulated core wire connecting method according to the present invention will be described in detail with reference to the drawings. In the following description, the direction in which the lid of the housing opens is the upper side, and the direction in which the bottom of the housing is located is the lower side. However, it is not essential that the insulation displacement connector device of this embodiment be used in a position in which the lid is located at the upper side, and the lid may be located at the side or at the lower side.

[0018] 1 and 2 show a pressure-displacement connector device according to a first embodiment of the present invention, with FIG. 1 being a perspective view and FIG. 2 being a cross-sectional view. Also, FIG. 3 is a perspective view showing only the main contact and gripping member of the pressure-displacement connector device according to the first embodiment. As shown in FIGS. 1 and 2, the pressure-displacement connector device 1 has a housing 10, a main contact 20, and a pair of gripping members 30 (30A, 30B). The pressure-displacement connector device 1 of this embodiment is a device for coaxially connecting a pair of insulated core wires 100A, 100B each having a conductor core wire and an insulating coating provided around the conductor core wire. In the following description, the direction in which the pair of insulated core wires are connected is referred to as the axial direction.

[0019] The main contact 20 is made of a conductive material and is U-shaped in side view. The main contact 20 has a rectangular plate-like base 21 extending horizontally, and a pair of pressure-contact portions 22 extending vertically from both ends of the base 21. The width and thickness of the base 21 and the pressure-contact portions 22 are constant.

[0020] The insulation displacement portions 22 are parallel to each other, and a first slot 23 is formed. The slot 23 is formed in the center in the width direction over a predetermined length from the lower edge upward. In this embodiment, the width of the slot 23 is constant, but the width may be narrowed toward the bottom of the slot 23 (upper part in FIG. 3). Alternatively, it is also possible to make the bottom of the slot wide enough to accommodate the expansion of the slot that occurs when the insulated core wire is inserted into the slot. At least a part of the width of the slot 23 (the entire width in this embodiment) is narrower than the diameter of the conductor core wire of the insulated core wire to be connected.

[0021] The gripping member 30 is formed of the same conductive material as the main contact 20, and is formed in a U-shape in a side view. In this embodiment, the main contact 20 and the gripping member 30 can be formed of a conductive material, for example, a copper alloy such as C5191-H (phosphor bronze). Furthermore, the material constituting the gripping member 30 is not limited to a conductive material. It is preferable that the main contact 20 and the gripping member 30 are formed of the same material, but different materials may be used as long as they are sufficiently harder than the conductor core wire. The gripping member 30 has a rectangular plate-shaped base 31 extending horizontally, and a pair of pressure-contact portions 32 extending from both ends of the base 31 in a perpendicular direction to the base 31. The width and thickness of the base 31 and the pressure-contact portions 32 are constant. The widths of the slots of the main contact 20 and the gripping member 30 may be the same or different.

[0022] The shape of the insulation displacement portion 32 of the gripping member 30 is the same as the shape of the insulation displacement portion 22 of the main contact 20. The insulation displacement portions 32 of the gripping member 30 are parallel to each other, and a second slot 33 is formed. The slot 33 is formed in the center in the width direction from the lower edge upward over a predetermined length. In this embodiment, the width of the slot 33 is constant, but the width may be narrowed toward the bottom of the slot 33 (upper part in FIG. 2). Alternatively, it is also possible to widen the bottom of the slot to the extent that the slot expands when the insulated core wire is inserted into the slot. The width of the slot 33 is at least partially (in this embodiment, entirely) narrower than the diameter of the conductor core of the insulated core wire to be connected.

[0023] In this embodiment, the gripping member 30 has a pair of pressure contact portions 32 and two slots 33, but this is not limited to the above, and three or more pressure contact portions 32 and three or more slots 33 may be provided.

[0024] The housing 10 has a shape that is symmetrical with respect to a central plane in the axial direction. The housing 10 aligns the insulated core wires, the main contacts 20, and the gripping member 30. The housing 10 has a storage section 40 and a lid section 50 that is rotatably connected to one edge of the upper surface of the storage section 40. The housing 10 can be manufactured by injection molding a resin such as polypropylene.

[0025] The accommodating section 40 is a rectangular parallelepiped that is long in the axial direction, and has a pair of insulated core wire insertion holes 41 for inserting insulated core wires. The pair of insulated core wire insertion holes 41 open at both axial end faces of the accommodating section 40 and extend inward to the axial center of the accommodating section 40. A pair of insulated core wires can be inserted into the insulated core wire insertion holes 41 from opposite sides. A partition plate 42 is positioned between the pair of insulated core wire insertion holes 41, and the insulated core wire insertion holes 41 are separated by the partition plate 42. Guide tubes 43 are erected on both axial side faces of the accommodating section 40. The guide tube 43 is cylindrical, and the insulated core wire insertion holes 41 are continuous with the internal space.

[0026] A cantilever-type interference portion 43A is formed on the side surface of each guide tube 43. The tip side of the interference portion 43A advances into the insulated core wire insertion hole 41. This allows the insulated core wires 100A, 100B inserted into the insulated core wire insertion hole 41 to be temporarily fixed by the interference portion 43A.

[0027] Furthermore, rectangular monitoring holes 44 are formed on both axial sides of the partition plate 42 of the accommodating section 40. These monitoring holes 44 open to the upper surface. The internal space of the monitoring holes 44 communicates with the insulated core wire insertion holes 41. Furthermore, a peephole 40B is formed in the recess 40A on the front surface of the accommodating section 40, and this peephole 40B communicates with the insulated core wire insertion hole 41.

[0028] Further, from the monitoring hole 44 of the accommodating portion 40 toward the outside, there are a first pressure contact guide hole 45 (main contact guide hole), a second pressure contact guide hole 46 (holding member guide hole), and a third pressure contact guide hole 47 (holding member guide hole). The first pressure contact guide hole 45, the second pressure contact guide hole 46, and the third pressure contact guide hole 47 are each a flat space, and communicate with the insulated core wire insertion hole 41. The thickness and width of the second pressure contact guide hole 46 and the third pressure contact guide hole 47 are approximately equal to the thickness and width of the pressure contact portion 32 of the holding member 30, respectively, and the interval between the second pressure contact guide hole 46 and the third pressure contact guide hole 47 is equal to the interval between the pressure contact portions 32 of the holding members 30. This makes it possible to insert the pressure contact portion 32 of the holding member 30 into the second pressure contact guide hole 46 and the third pressure contact guide hole 47.

[0029] The thickness and width of the first insulation displacement guide hole 45 are approximately equal to the thickness and width of the insulation displacement portion 22 of the main contact 20, and the distance between the pair of insulation displacement guide holes 45 is equal to the distance between the insulation displacement portions 22 of the main contact 20. This makes it possible to insert the insulation displacement portion 22 of the main contact 20 into the first insulation displacement guide hole 45. A plate-shaped recess 40A is formed on the front (diagonally lower right in FIG. 1) side surface of the storage section 40. This recess 40A is formed across the entire height in the vertical direction.

[0030] The lid portion 50 has a rectangular plate portion 51 and a flap portion 52 formed in the center of one long side of the plate portion 51 in the longitudinal direction.

[0031] The plate portion 51 is in the shape of a rectangular plate, and its width and length are equal to the width and length of the upper surface of the storage portion 40. The flap portion 52 is provided vertically to the plate portion 51. The shape of the flap portion 52 corresponds to the shape of the recess 40A of the storage portion 40, the length and height of the flap portion 52 are equal to the length and height of the storage portion 40, and the thickness of the flap portion 52 is equal to the depth of the recess 40A. An engagement portion 53 is formed vertically at the end of the flap portion 52 opposite to the plate portion 51.

[0032] Hereinafter, a method for connecting a pair of insulated core wires using the insulation displacement connector device 1 of the first embodiment will be described. Figures 4A to 4E and 5A to 5E are diagrams for explaining a method for connecting a pair of insulated core wires using the insulation displacement connector device of the first embodiment, where Figures 4A to 4E are perspective views and Figures 5A to 5E are longitudinal sectional views.

[0033] As shown in Fig. 4A and Fig. 5A, before the connection of the insulated core wires 100A, 100B is started, the plate portion 51 of the cover portion 50 is opened 180 degrees relative to the upper surface of the housing portion 40, the tip of the insulation displacement portion 22 of the main contact 20 is inserted into the first insulation displacement guide hole 45, and the tip of the insulation displacement portion 32 of each gripping member 30 is inserted into the second insulation displacement guide hole 46 and the third insulation displacement guide hole 47, respectively. In this state, the tip of the insulation displacement portion 22 of the main contact 20 and the tip of the insulation displacement portion 32 of the gripping member 30 have not reached the insulated core wire insertion hole 41. In this state, one insulated core wire 100A is inserted into one insulated core wire insertion hole 41 until the tip abuts against the partition plate 42. The insulated core wires 100A, 100B thus inserted into the insulated core wire insertion hole 41 are temporarily fixed by the interference portion 43A. Then, it is confirmed through the monitoring hole 44 that one of the insulated core wires 100A has been inserted to a sufficient depth.

[0034] Next, as shown in Fig. 4B and Fig. 5B, one of the gripping members 30 is pressed into the accommodating portion 40 of the housing 10 using a jig. By pressing the gripping member 30, both sides of the slot 33 of the pair of pressure-connecting portions 32 of the gripping member 30 strip the coating of the insulated core wire 100A. This exposes the conductor core of one of the insulated core wires 100A. Then, by pressing the gripping member 30 further, the side of the exposed conductor core of one of the insulated core wires 100A is sandwiched in the slot 33 of the gripping member 30. In this way, the coating of one of the insulated core wires 100A engages with the pressure-connecting portions 32, and the conductor core of the insulated core wire 100A is gripped by the gripping member 30 in the slot 33.

[0035] 4C and 5C, the other insulated core wire 100B is inserted into the other insulated core wire insertion hole 41 until its tip abuts against the partition plate 42. Then, it is confirmed through the monitoring hole 44 that the one insulated core wire 100B has been inserted to a sufficient depth.

[0036] Next, as shown in Fig. 4D and Fig. 4D, the other gripping member 30 is pressed into the accommodating portion 40 of the housing 10 using a jig. By pushing the gripping member 30, both sides of the slot 33 of the pair of pressure-connecting portions 32 of the gripping member 30 strip the coating of the insulated core wire 100B. This exposes the conductor core of the other insulated core wire 100B. Then, by further pushing the gripping member 30, the side of the exposed conductor core of the other insulated core wire 100B is sandwiched in the slot 33 of the gripping member 30. In this way, the coating of the other insulated core wire 100B engages with the pressure-connecting portions 32, and the conductor core of the insulated core wire 100B is gripped by the gripping member 30 in the slot 33.

[0037] Next, the main contact 20 is pressed into the accommodating portion 40 of the housing 10 using a jig. By pressing the main contact 20, both sides of the slot 23 of the pair of pressure-connecting portions 22 of the main contact 20 strip the coating of the one and other insulated core wires 100A, 100B. This exposes the conductor cores of the one and other insulated core wires 100A, 100B. Then, by pressing the main contact 20 further, the exposed conductor cores of the one and other insulated core wires 100A, 100B are sandwiched in the slot 23 of the main contact 20. In this way, the coatings of the one and other insulated core wires 100A, 100B engage with the pressure-connecting portions 22, and the conductor cores of the one and other insulated core wires 100A, 100B are gripped by the main contact 20 in the slots 23, respectively. Furthermore, the conductor core wires of the one and other insulated core wires 100A, 100B each abut against the inner circumferential surface of the slot 23 of the main contact 20, and are therefore electrically connected via the main contact 20. After pressure welding is performed using the main contact 20 in this manner, it is confirmed through the inspection hole 40B that the one insulated core wire 100A and the other insulated core wire 100B are correctly positioned and pressure welded by the main contact 20.

[0038] Next, as shown in Figures 4E and 5E, the lid 50 is rotated until the plate 51 abuts against the upper surface of the storage section 40. As a result, the flap 52 is positioned within the recess 40A on the front surface of the storage section 40, and the engagement portion 53 engages with the edge of the lower surface of the storage section 40. As a result, the upper surface of the storage section 40 is closed by the lid 50, and the rotation of the lid 50 relative to the storage section 40 is restricted. By closing the lid 50 in this manner, the upper surface of the storage section 40 and the peephole 40B are closed. In this manner, a connection structure between one insulated core wire 100A and the other insulated core wire 100B is formed.

[0039] The method of connecting one insulated core wire 100A and the other insulated core wire 100B is not limited to the above method. For example, both one insulated core wire 100A and the other insulated core wire 100B can be inserted into a pair of insulated core wire insertion holes 41, the main contact 20 arranged on the housing 10 can be pressed with a jig to crimp the one insulated core wire 100A and the other insulated core wire 100B, and each of the gripping members 30 arranged on the housing 10 can be pressed with a jig to grip the pair of one insulated core wire 100A and the other insulated core wire 100B, respectively.

[0040] According to this embodiment, the insulated core wires 100A, 100B are crimped by the paired gripping members 30 in addition to the main contact 20, so that the insulated core wires 100A, 100B are held at multiple locations, and the insulated core wires can be more firmly fixed. In addition, since the crimping is performed using the main contact 20 and the gripping members 30, the pressing force required for one crimping operation is small, and the worker can easily perform the crimping operation. In particular, as described later, the pressing force required to crimp the insulated core wire into one slot is about 400 N, so the pressing force required to simultaneously press the main contact 20 and the two gripping members 30 all at once is a large value of about 2400 N, and since it is possible to divide and press this force, the worker can easily perform the work using a jig.

[0041] Furthermore, according to this embodiment, the housing 10 has a first insulation displacement guide hole 45 that guides the main contact 20, and a second insulation displacement guide hole 46 and a third insulation displacement guide hole 47 that guide the gripping member 30. With this configuration, the main contact 20 and the gripping member 30 are guided by the first insulation displacement guide hole 45, the second insulation displacement guide hole 46 and the third insulation displacement guide hole 47 of the housing 10, respectively, so that the insulated core wire can be connected accurately.

[0042] Furthermore, according to this embodiment, each of the gripping members 30 has two slots 33, and each gripping member 30 grips the insulated core wires 100A, 100B at multiple positions. Since the gripping members 30 have two slots 33 in this manner, each insulated core wire is crimped at three or more positions. This ensures a tensile strength equal to or greater than that when the insulated core wires are connected using a crimp sleeve, as confirmed in an experiment described below.

[0043] Furthermore, according to this embodiment, the insulation displacement portion 22 in which the slot 23 of the main contact 20 is formed and the insulation displacement portion 32 in which the slot 33 of the gripping member 30 is formed are substantially the same in shape. This allows insulation displacement to be performed using members of the same shape, making it possible to equalize the tensile resistance in each insulation displacement portion 22, 32 and also to equalize the force required for insulation displacement.

[0044] Furthermore, according to this embodiment, the main contact 20 and the gripping member 30 are formed from the same conductive material. This allows the pressure contact to be performed using members of the same material, making it possible to equalize the tensile resistance in each of the pressure contact portions 22, 32 and reducing the manufacturing effort.

[0045] A second embodiment of the insulation displacement connector of the present invention will now be described. In the following description, the same components as those in the first embodiment will be given the same reference numerals and detailed description will be omitted. Fig. 6 is a perspective view showing a pressure contact connector according to a second embodiment of the present invention. As shown in Fig. 6, the pressure contact connector 101 according to the second embodiment differs from the first embodiment in that the gripping member 130 is plate-shaped and the accommodating portion 140 of the housing 110 does not have the third pressure contact guide hole 47.

[0046] The gripping member 130 according to the second embodiment is made of the same conductive material as the main contacts 20, and is formed in a plate shape. A slot 133 is formed in the gripping member 130. The slot 133 is formed in the center in the width direction over a predetermined length from the lower edge toward the upper side. The width of the slot 133 is constant. In this embodiment, the width of the slot 133 is constant, but the width may be narrowed toward the bottom of the slot 133 (upper side in FIG. 6). At least a portion of the width of the slot 133 (the entire width in this embodiment) is narrower than the diameter of the conductor core wire of the insulated core wire to be connected.

[0047] The method of constructing a connection structure using the insulation displacement connector device 101 according to the second embodiment is the same as that according to the first embodiment. The insulation displacement connector device 101 according to the second embodiment can also firmly connect one insulated core wire 100A and the other insulated core wire 100B in a state in which the conductor core wires are electrically connected to each other. The second embodiment also provides the same advantageous effects as the first embodiment.

[0048] The inventors experimentally investigated the force required to press-connect an insulated core wire with a pressure-connecting member having a plate-shaped slot. In this experiment, a plate-shaped contact having slots 23, 33 similar to the pressure-connecting parts 22, 32 of the main contact 20 and the gripping member 30 was made from a copper alloy (C2680-EH). The contact material used was 0.8 mm thick, and the slot width was 0.6 mm. A contact with such a slot was used to press-connect an insulated core wire with a cross-sectional area of ​​2 mm 2 An insulated core wire having a conductor core wire and an insulating coating was pressure-welded to the contact, and the movement distance in the pressing direction of the contact and the pressing force required for the movement were measured.

[0049] Figure 7 is a graph showing the relationship between the travel distance and the pressing force when simultaneously pressing an insulated core wire into two pressure-contact slots of a contact. As shown in the figure, 2 It was confirmed that when two coated insulated core wires having a conductor core are pressure-welded using a pressure welding member, a pressing force of approximately 800 N is required when pressure welding is performed simultaneously using two pressure welding members attached to one pressure welding member.

[0050] The inventors also conducted an experimental study on the number of crimping points by contacts equipped with slots required to provide sufficient resistance to pull-out of the insulated core wire. In this experiment, plate-shaped contacts having slots 23, 33 similar to the crimping parts 22, 32 of the main contact 20 and the gripping member 30 were made from a copper alloy (C2680-EH). The contact material was 0.8 mm thick, and the slot width was 0.6 mm. One, two, and three such contacts were used to create a contact with a cross-sectional area of ​​2 mm 2 The pull-out strength at which the insulated core wire could no longer be held was measured for each of the insulated core wires having the conductor core wire and insulating coating.

[0051] Figure 8 is a graph showing the relationship between the number of contacts with slots and the pull-out strength. For comparison, R shows the pull-out strength when the insulated core wire is connected using a crimp sleeve. As shown in the figure, it was confirmed that by crimping the insulated core wire with three contacts, it is possible to obtain the same pull-out strength as when a crimp sleeve is used. [Explanation of symbols]

[0052] 1: Pressure connector device 10: Housing 20: Main Contact 21: Base 22: Pressure welded part 23: Slots 30: Gripping member 31: Base 32: Pressure welded part 33: Slots 40: Storage section 40A: Recess 40B: Peephole 41: Insulated core wire insertion hole 42: Partition plate 43: Guide tube 43A: Interference part 44: Monitoring hole 45: First pressure-welding guide hole 46: Second pressure-welding guide hole 47: Third pressure-welding guide hole 50: Lid 51: Plate part 52: Flap section 53: Engagement part 100A: Insulated core wire 100B: Insulated core wire 101: Pressure connector device 110: Housing 130: gripping member 133: Slots 140: Storage unit

Claims

1. A pressure-displacement connector device for connecting a pair of insulated core wires arranged in opposite directions, each of which includes a conductor core wire and an insulating coating surrounding the conductor core wire, the pressure-displacement connector device comprising: a housing having insertion holes into which the pair of insulated core wires can be inserted from opposite sides; a main contact disposed in the housing so as to be able to advance toward the insertion hole, having a first slot corresponding to each of the pair of insulated core wires, and configured to peel off a portion of the insulating coating of the pair of insulated core wires and press-contact the pair of insulated core wires so as to be conductive with the conductor core wire in the first slot; a pair of gripping members disposed in the housing so as to be able to advance toward the insertion hole, each of which corresponds to the pair of insulated core wires, each of which has a second slot, and which are configured to peel off a portion of the insulating coating of each of the pair of insulated core wires to grip the insulated core wire in the second slot and the conductor core wire in the insulated core wire; Housing and Equipped with With the pair of insulated core wires inserted into the insertion hole, the main contact and the gripping member disposed in the housing are pressed to electrically connect the insulated core wires and hold the insulated core wires.

1. A pressure-displacement connector device comprising:

2. The housing includes: an insertion hole into which the pair of insulated core wires can be inserted from opposite sides; a main contact guide hole for guiding the main contact such that, when the main contact is pressed, the main contact peels off a part of the insulating coating of the mating insulated core wire and the conductor core wire is positioned within the first slot; a gripping member guide hole for guiding the gripping member so that, when the gripping member is pressed, the gripping member peels off a part of the insulating coating of the corresponding insulated core wire and the conductor core wire is positioned in the second slot.

2. The insulation displacement connector assembly of claim 1.

3. each of the pair of gripping members has a plurality of second slots, and each gripping member grips the insulated core wire at a plurality of positions; 2. The insulation displacement connector assembly of claim 1.

4. a surface of the main contact in which the first slot is formed and a surface of the gripping member in which the second slot is formed have substantially the same shape; 2. The insulation displacement connector assembly of claim 1.

5. The main contact and the gripping member are formed of the same conductive material.

2. The insulation displacement connector assembly of claim 1.

6. A connection structure in which a pair of insulated core wires, each having a conductor core wire surrounded by an insulating coating, are connected by the connector device according to any one of claims 1 to 5, the main contacts hold the pair of insulated core wires and electrically connect the conductor core wires of the pair of insulated core wires, 13. A connection structure for insulated core wires, wherein each of the pair of insulated core wires is held by each of the holding members.

7. A method for connecting a pair of insulated core wires using an insulation displacement connector device, comprising: The insulation displacement connector device comprises: a housing having insertion holes into which the pair of insulated core wires can be inserted from opposite sides; a main contact disposed in the housing so as to be able to advance toward the insertion hole, the main contact having a first slot corresponding to each of the pair of insulated core wires; a gripping member disposed in the housing so as to be capable of advancing toward the insertion hole, the gripping member being provided corresponding to each of the pair of insulated core wires, inserting a pair of insulated core wires into the insertion holes; pressing the main contact disposed in the housing with a jig to crimp the pair of insulated core wires; pressing the gripping members disposed on the housing with a jig to grip the pair of insulated core wires with each gripping member; The insulated core connecting method includes:

8. A method for connecting a pair of insulated core wires using an insulation displacement connector device, comprising: The insulation displacement connector device comprises: a housing having insertion holes into which the pair of insulated core wires can be inserted from opposite sides; a main contact disposed in the housing so as to be able to advance toward the insertion hole, the main contact having a first slot corresponding to each of the pair of insulated core wires; a gripping member disposed in the housing so as to be capable of advancing toward the insertion hole, the gripping member being provided corresponding to each of the pair of insulated core wires, inserting one of the insulated core wires into the insertion hole; a step of pressing one of the gripping members disposed on the housing with a jig to grip the one of the insulated core wires with the one of the gripping members; inserting the other insulated core wire into the insertion hole; pressing the main contact disposed in the housing with a jig to crimp the pair of insulated core wires; pressing the other gripping member disposed on the housing with a jig to grip the other insulated core wire with the other gripping member; The insulated core connecting method includes:

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