KR20150018388A - Insulation displacement connector and insulation displacement connector with wire - Google Patents

Abstract

The present invention provides a piezoelectric connector and a piezoelectric connector attached to a wire for increasing force to maintain a coating wire. The piezoelectric connector (1) is connected to the coating wire (2) having a configuration for coating a core wire part (4) by a coating part (3). The piezoelectric connector (1) has a contact (6) and a housing (5) for maintaining the contact (6). The contact (6) includes a piezoelectric knife edges (41, 42) for cutting the coating part (3) and a caulking part (39) which is caulked to the coating part (3). The caulking part (39) has a first piece part (43) and a second piece part (44) as a pair of piece parts to be faced with each other in a width direction (Y1). The first piece part (43) is combined with the coating part (3) of the coating wire (2) by being bent and transformed. The second piece part (44) is arranged to be overlapped with at least a part of the first piece part (43) by being bent and transformed.

Description

TECHNICAL FIELD [0001] The present invention relates to an insulation displacement connector and an insulation displacement connector,

The present invention relates to an insulation displacement connector and an insulation displacement connector with electric wire.

The insulation displacement connector is electrically connected to the covered electric wire (see, for example, Japanese Patent No. 3355172). Specifically, the insulation displacement connector has a contact. The contact has a press-fitting blade for cutting the covered portion of the coated wire and a caulking portion caulking on the covered portion. The caulking portion has a pair of pieces formed in an elongated strip shape, and can be plastically deformed. The pair of single piece portions of the caulking portion extend straight before they are engaged with the covering wire.

In the configuration described in Japanese Patent No. 3355172, when the insulation displacement connector and the coating electric wire are connected, the coated electric wire is displaced toward the contact. As a result, the covered portion of the coated wire comes into contact with the press-contacting blade of the contact and is cut by the corresponding press-contacting blade. Then, the contact portion contacts the core wire portion exposed from the cut-away covering portion.

Then, after the covered wire is inserted into the contact, a pair of single pieces of the caulking portion are bent by the caulking portion of the caulking punch. Thereby, the caulking portion fits into the covering portion.

As a result, the contact is coupled to the covering wire by the cooperation of the caulking portion and the bottom portion of the contact.

In the configuration disclosed in Japanese Patent No. 3355172, these pair of single piece portions are bent by the caulking portion to be caulked to the covering wire. As a result, the pair of single piece portions press the coated wire tightly. The pair of single-piece portions are not in contact with each other in the calked state with the coated wires, and are not configured to reinforce each other. For this reason, each piece has a weak strength against a force from a covered wire. As a result, each piece is not able to resist this force when it receives a strong force from the covering wire that tries to push up the tip of each piece. Therefore, the tips of the respective one-side portions are lifted. When the tips of the respective pieces are lifted, the respective pieces are released from being caulked to the covered wires, making it impossible to keep the coated wires in a fixed state.

This problem can be said to be a problem peculiar to the insulation displacement connector. More specifically, the insulation displacement connector is connected to the covered electric wire in a state in which the contact is already assembled in the housing. For this reason, the caulking punch for caulking a pair of one-side portions of the contacts to the covered electric wire comes into contact with the contacts while avoiding the housing. For this reason, the caulking portion of the caulking punch can not sandwich the caulking portion and the covering wire, and sufficient force can not be applied to the caulking portion. Therefore, the caulking punch has a problem in that it is difficult to increase the force of pressing the pair of side pieces with the covered wire, and there is a limit in increasing the bonding force between the pair of side pieces and the covered wire.

For example, when a crimp terminal is used, the crimp terminal is caulked to a covered wire and then housed in the housing. For this reason, the caulking punch for caulking the crimp terminal to the covered electric wire does not need to be in contact with the caulked portion of the crimp terminal so as to avoid the housing. Therefore, the caulking punch can perform the caulking operation in a state in which the pair of single pieces and the covered electric wire are sandwiched, for example. Therefore, the caulking punch can exert a very large force between the crimp terminal and the coated wire, and as a result, the bonding force between the caulked portion of the crimp terminal and the covered wire can be increased. The problem that it is difficult to increase the coupling force between the caulking portion and the covered electric wire in this way can be said to be peculiar to the insulation displacement connector.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an insulation displacement connector and an insulation displacement connector with electric wire which can increase the force for holding a covered electric wire by considering the above-described circumstances.

(1) In order to solve the above problems, an insulation displacement connector according to a certain aspect of the present invention is an insulation displacement connector to be connected to a covered electric wire having a structure in which a core wire portion is covered with a covering portion, And a housing for holding the contact, wherein the contact includes a press-contacting blade for cutting the cover, and a caulking portion caulking on the cover, wherein the caulking portion comprises: And a first piece portion and a second piece portion as a pair of pair of pieces facing each other in a predetermined parallel direction orthogonal to the longitudinal direction, wherein the first piece portion is deformed by flexure, And the second piece portion is configured to be able to overlap with at least a part of the first piece portion by bending deformation.

According to this configuration, when the covered wire is connected to the contact, the second piece portion overlaps with the first piece. Therefore, for example, when the force to lift the tip of the first piece is applied to the first piece from the coated wire, the second piece can receive this force. Therefore, even when the force is large, the contact can more reliably maintain the engagement state of the first piece and the coated wire. With this configuration, it is possible to increase the coupling force between the caulking portion and the covering electric wire even when it is difficult to sufficiently secure a force acting between the first piece and the covering electric wire when the first piece is caulked to the covering electric wire. In the pressure contact connector in which the contact wire is caulked to the contact after the contact is assembled to the housing, the housing exists in the vicinity of the caulking portion. As a result, the caulking punch can not be placed so as to sandwich the caulking portion and the covered wire. In this case, when the first piece is caulked to the coated wire, it is difficult to sufficiently secure a force acting between the first piece and the coated wire. However, in this case as well, as described above, the coupling force between the caulking portion and the covering electric wire can be increased by overlapping the first and second pieces. For this reason, according to the present invention, it is possible to further increase the force of holding the covered electric wire in the insulation displacement connector.

(2) Preferably, the contact includes a first side portion supporting the first piece, a second side portion supporting the second piece, and a connecting portion connecting the first side portion and the second side portion to each other And a part of the covered electric wire is arranged in a space surrounded by the first side part, the second side part, and the connecting part.

According to this configuration, the coated wire can be firmly fixed to the contact by the first piece, the second piece, and the connecting portion of the caulking portion.

(3) Preferably, the housing includes a receptacle for accommodating the contact, a wall portion for receiving the connection portion, and an opening, wherein the opening includes at least one of the pressure-contacting blade, the connecting portion, Is exposed to the outside of the housing.

According to this configuration, the connecting portion is received by the wall portion of the accommodating portion. As a result, the connecting portion and the caulking portion disposed adjacent to the connecting portion can be protected by the housing. Further, since the opening portion is formed, the covered electric wire can be inserted into the contact through the opening portion.

(4) Preferably, the length from the proximal end to the distal end of the first piece is different from the length from the proximal end to the distal end of the second piece.

According to this configuration, when the first piece and the second piece are overlapped with each other, the leading end of the first piece is caught by the second piece, and the leading end of the second piece is caught by the first piece. . As a result, it is possible to suppress the deterioration of the bonding force between the first piece and the coated wire due to the above-mentioned catching phenomenon.

(5) More preferably, the length of the first piece portion is set to be shorter than the length of the second piece portion.

According to this configuration, the tip end of the first piece can be more reliably dug into the coated wire. Therefore, the bonding force between the first piece and the coated wire can be made higher.

(6) In order to solve the above-described problems, a connector with a wire with insulation according to any one aspect of the present invention includes the insulation displacement connector and a covered electric wire connected to the contact, And the second piece portion overlaps with at least a part of the first piece portion.

According to this configuration, for example, when the force to lift the tip of the first piece is applied to the first piece from the coated wire, the second piece can receive this force. Therefore, even when the force is large, the contact can more reliably maintain the engagement state of the first piece and the coated wire. With this configuration, it is possible to increase the coupling force between the caulking portion and the covering electric wire even when it is difficult to sufficiently secure a force acting between the first piece and the covering electric wire when the first piece is caulked to the covering electric wire. In the pressure contact connector in which the contact wire is caulked to the contact after the contact is assembled to the housing, the housing exists in the vicinity of the caulking portion. As a result, the caulking punch can not be placed so as to sandwich the caulking portion and the covered wire. In this case, when the first piece is caulked to the coated wire, it is difficult to sufficiently secure a force acting between the first piece and the coated wire. However, in this case as well, as described above, the coupling force between the caulking portion and the covering electric wire can be increased by overlapping the first and second pieces. For this reason, according to the present invention, it is possible to further increase the force of holding the coated wire in the connector with the electric wire.

(7) More preferably, at least a part of the first piece is pierced into the covering portion of the covered electric wire.

According to this configuration, the coupling force between the first piece and the coated wire can be made larger.

According to the present invention, the force for holding the coated wire can be made larger.

1 is a cross-sectional view showing a state in which an insulation displacement connector according to an embodiment of the present invention is connected to a covered electric wire and a mating connector;
2 is a perspective view of the insulation displacement connector and the coated wire.
3 is a perspective view showing the bottom surface side of the insulation displacement connector in a state before the covered electric wire is caulked, and shows a part of the insulation displacement connector.
4 is a perspective view showing the upper surface side of the insulation displacement connector.
Fig. 5 is a rear view of the insulation displacement connector showing a state in which a covered electric wire is connected. Fig.
Fig. 6 is a rear view of the insulation displacement connector showing the state before the covered electric wire is connected. Fig.
7 is a perspective view of two contacts.
8 is a rear view of a main portion showing a caulking punch and an insulation displacement connector.
Fig. 9 is a rear view of the main part of the modification. Fig.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. Furthermore, the present invention can be widely applied to various applications as an insulation displacement connector and a connector with electric wire.

1 is a sectional view showing a state in which an insulation displacement connector 1 according to an embodiment of the present invention is connected to a covered electric wire 2 and a mating connector 100. Fig. Referring to Fig. 1, the insulation displacement connector 1 is provided in electronic equipment or the like. In the insulation displacement connector 1, a plurality of covered electric wires 2 (one covered electric wire 2 is shown in Fig. 1) are coupled. In this embodiment, the insulation displacement connector 1 is a socket connector and is detachably connected to the mating connector 100 as a receptacle connector.

The mating connector 100 is a connector mounted on the circuit board 110 or the like. Electrical connection between the plurality of covered electric wires 2 and the circuit board 110 is achieved by the connection between the insulation displacement connector 1 and the mating connector 100.

The counterpart connector 100 has a housing 101 and a plurality of contacts 102. [

The housing 101 is, for example, an integral molded product formed using a synthetic resin.

The housing 101 has a peripheral wall 103, a rear wall 104, and a lock pawl 105.

The circumferential wall 103 is formed as an elongated rectangular frame and elongated in a direction (width direction) orthogonal to the paper surface of Fig. The peripheral wall 103 defines a space in which a part of the insulation displacement connector 1 is received. On the upper portion of the peripheral wall 103, a lock pawl 105 is formed.

The lock pawl 105 is a portion formed on the surface of the peripheral wall 103. The lock pawl 105 restricts the displacement of the pressure contact connector 1 from the mating connector 100 by catching the lock pawl 11 of the pressure contact connector 1 described below.

A rear wall 104 is formed at a rear portion of the peripheral wall 103. The rear wall 104 is disposed so as to cover the rear end of the peripheral wall 103. In the peripheral wall 103, a plurality of through holes 106 are formed. In Fig. 1, one of the plurality of through holes 106 is shown.

A plurality of through-hole portions 106 are formed at intervals in the width direction of the housing 101. Each of the through hole portions 106 holds one contact 102.

Each of the contacts 102 is formed using a material having conductivity. More specifically, each of the contacts 102 is made of, for example, a copper alloy. The surfaces of the respective contacts 102 are subjected to a plating process such as tin plating or gold plating. Each of the contacts 102 is held in a corresponding through hole portion 106. A part of each contact 102 is disposed in the peripheral wall 103. [ The other part of each contact 102 is fixed to the circuit board 110 by soldering or the like outside the housing 101. [

Next, the configuration of the insulation displacement connector 1 will be described.

Fig. 2 is a perspective view of the insulation displacement connector 1 and the covered electric wire 2. Fig. 1 and 2, the insulation displacement connector 1 is a pressure-contact type electrical connector. The insulation displacement portion 3 of the insulation displacement conductor 3 is connected to a core wire (core wire) (4). ≪ / RTI > The insulation displacement connector 1 and the covered electric wire 2 are connected to each other to form an insulation displacement connector with electric wire.

Each coated wire (2) has a covering section (3) and a core wire section (4).

The covering portion 3 is a tubular member formed using an insulating material such as a synthetic resin and has elasticity. The covering portion (3) covers the core wire portion (4) along the entire circumferential direction of the core wire portion (4).

The core wire portion 4 is formed using a conductive material such as a metal. One end of the core wire portion 4 is in contact with a contact 6 (to be described later) of the insulation displacement connector 1. The other end of the core wire 4 is connected to an electronic device (not shown) or the like.

The insulation displacement connector 1 is formed as a whole flat. In the following, the longitudinal direction of the insulation displacement connector 1 is referred to as the longitudinal direction X1. The longitudinal direction X1 is an example of the " longitudinal direction " of the present invention. The direction orthogonal to the longitudinal direction X1 in the plane of the insulation displacement connector 1 is referred to as the width direction Y1. The width direction Y1 is an example of the " parallel direction " of the present invention. The direction orthogonal to both the longitudinal direction X1 and the width direction Y1 is referred to as the thickness direction Z1.

One end of each covered electric wire 2 is arranged in parallel with the longitudinal direction X1 while the covered electric wire 2 and the contact 102 of the mating connector 100 are mounted on the insulation displacement connector 1, One end of the contact 102 of the mating connector 100 is also disposed in parallel with the longitudinal direction X1.

The insulation displacement connector (1) has a housing (5) and a plurality of contacts (6) held in the housing (5).

Fig. 3 is a perspective view showing the bottom surface side of the insulation displacement connector 1 in a state before the covered electric wire 2 is caulked, and shows a part of the insulation displacement connector 1. Fig. Fig. 4 is a perspective view showing the upper surface side of the insulation displacement connector 1. Fig. 5 is a rear view of the insulation displacement connector 1, showing a state in which the covered electric wire 2 is connected. Fig. 6 shows a state before the covered electric wire 2 is connected, which is the insulation displacement connector 1. Fig.

1, 2, and 4, the housing 5 is formed using an insulating material such as a synthetic resin. The housing 5 is a single member formed by injection molding or the like. The housing 5 holds a plurality of (eight in this embodiment) contacts 6. More specifically, the housing 5 is configured to hold the plurality of contacts 6 in a state of being arranged in a width direction Y1 perpendicular to the longitudinal direction X1. The housing 5 is formed in a shape symmetrical to the width direction Y1.

The housing 5 has a lock portion 7 and a housing main body 8.

The lock portion 7 has a column 9, a lock piece 10, and a lock pawl 11.

The column 9 has a shape protruding from the upper surface of the housing main body 8. The column 9 is continuous with the lock piece 10. The lock piece 10 is a plate-like member. The lock piece (10) can swing with the support (9) as a fulcrum. The front end of the lock piece 10 can be lifted by pivoting the lock piece 10 by the operator.

The lock pawl 11 protrudes from the lower surface of the front end portion of the lock piece 10. The lock pawl 11 is provided as a portion to be received by the lock pawl 105 of the mating connector 100. [ The lock pawl 11 is a protruding portion extending in the width direction Y1.

The lock pawl 11 is opposed to the lock pawl 105 in the longitudinal direction X1 in a state where the insulation displacement connector 1 is connected to the mating connector 100. [ In this state, when the insulation displacement connector 1 is subjected to a force pulled out of the mating connector 100, the lock pawl 11 is caught by the lock pawl 105. As a result, displacement of the insulation displacement connector 1 in the direction pulled out of the mating connector 100 is restricted. The lock portion 7 having the above-described structure is supported by the housing main body 8.

1 to 4, the housing main body 8 has an outer peripheral wall 12, a front wall 13, a partition wall 14, and a through hole portion 15.

The outer peripheral wall 12 is formed in a rectangular shape that is flat in the thickness direction Z1 and extends elongated in the width direction Y1. The outer peripheral wall 12 has a top wall 17, a bottom wall 18 and a pair of side walls 19 and 20. The top wall 17 receives the column 9 of the lock portion 7. The top wall 17 is disposed so as to be spaced apart from the bottom wall 18 in the thickness direction Z1.

The top wall 17 is an example of the " wall portion " of the present invention, and receives the bottom portion 31 of the contact 6, which will be described later.

In the bottom wall 18, a plurality of openings are formed, and a part of the plurality of contacts 6 is exposed from the bottom wall 18. The pair of side walls 19 and 20 constitute a pair of ends of the outer peripheral wall 12 in the width direction Y1. A front wall 13 is formed at the front end of the outer peripheral wall 12 having the above-described structure.

The through hole portion 15 is provided as a hole portion for receiving the contact 6, and is an example of the " receiving portion " of the present invention. The through-hole portions 15 are formed at a plurality of locations (eight locations in this embodiment), and these through-holes 15 are arranged at regular intervals along the width direction Y1.

Further, partition walls 14 are formed between the through-hole portions 15 adjacent to each other in the width direction Y1. Each partition wall 14 is a plate-like portion extending from the top wall 17 toward the bottom wall 18 side along the thickness direction Z1. Each of the through hole portions 15 has the same configuration.

The through hole portion 15 is formed to penetrate the housing main body 8 in the longitudinal direction X1. The cross sectional area of the through hole portion 15 in the cross section orthogonal to the longitudinal direction X1 increases step by step as it moves from the front wall 13 to the rear side of the housing main body 8. [ The first opening 21, the second opening 22, the third opening 23, and the fourth opening 24 are formed in the through hole portion 15.

The first opening 21 is formed in the front wall 13, and the corresponding contact 102 of the mating connector 100 can be inserted. The second opening 22 is formed so as to be aligned with the first opening 21 in the longitudinal direction X1.

The second opening portion 22 is provided as a portion through which the covered electric wire 2 passes. The second opening 22 is an opening that opens toward the rear of the housing main body 8. As viewed from the back, the second opening 22 is formed in a U-shaped groove shape. The third opening 23 is formed so as to be continuous with the second opening 22. [

The third opening 23 is provided as a portion through which the covered electric wire 2 passes when the covered electric wire 2 is inserted into the through hole portion 15. The third opening 23 extends from the rear end of the housing main body 8 in the longitudinal direction X1 toward the front of the housing main body 8 and extends in the longitudinal direction X1 from the rear end of the housing main body 8 And is formed in a range of about half the length. The third opening 23 is opened to the bottom surface of the bottom wall 18. The second opening portion 22 and the third opening portion 23 are formed by the press-contact knives 41 and 42 of the press-contact portions 37 and 37 of the contact 6, a part of the bottom portion 31, (39) is exposed to the outside of the housing (5). A fourth opening portion 24 is disposed between the third opening portion 23 and the first opening portion 21.

The fourth opening 24 is opened to the bottom surface of the bottom wall 18 and the slip prevention portion 35 of the contact 6 to be described later is inserted.

The above is a schematic configuration of the housing 5. Next, the configuration of the contact 6 will be described.

Fig. 7 is a perspective view of the two contacts 6. Fig. 1 to 3 and Figs. 5 to 7, the contacts 6 are electrically connected to the covering portion 3 of the covered electric wire 2 mechanically and electrically, And is provided as a portion contacting the contact 102.

A plurality of contacts 6 are provided. In this embodiment, the number of the contacts 6 is equal to the number of the covered electric wires 2, and is equal to the number of the through holes 15. The contacts 6 are provided corresponding to each of the plurality of coated electric wires 2. Each of the contacts 6 is inserted in the corresponding through hole portion 15 and is held in the corresponding through hole portion 15. [ The positions of the contacts 6 in the longitudinal direction X1 are matched.

The contact 6 is formed using a material having conductivity. More specifically, the contact 6 is made of, for example, a copper alloy. The surface of the contact 6 is plated with, for example, tin plating or gold plating.

The contact 6 is formed by cutting, bending, or the like on one metal plate subjected to the plating process. The contact 6 is formed in a shape elongated in the longitudinal direction X1.

The contact 6 includes a bottom 31, a first side portion 32 and a second side portion 33, a contact portion 34, a slip prevention portion 35, a pressing portion 36, (37, 38) and a caulking portion (39).

The bottom portion 31 is a flat plate-shaped portion extending perpendicularly to the thickness direction Z1. The bottom portion 31 is received in the inner surface of the top wall 17 of the housing main body 8. The front end portion of the bottom portion 31 is adjacent to the first opening portion 21 of the housing main body 8. The rear end portion of the bottom portion 31 is adjacent to the second opening portion 22. The bottom portion 31 is an example of the " connecting portion " of the present invention, and connects the first side portion 31 and the second side portion 32 to each other. More specifically, the first side portion 32 and the second side portion 33 extend from a pair of end portions of the bottom portion 31 in the width direction Y1.

The first side portion 32 and the second side portion 33 are connected to each other in the pre-engagement state (hereinafter simply referred to as " pre-engagement state ") as a state before the insulation displacement connector 1 is coupled to the covered electric wire 2, And extends from the bottom portion 31 toward one side of the thickness direction Z1 (toward the bottom wall 18 side of the housing main body 8). The first side portion 32 and the second side portion 33 are adjacent to the corresponding partition 14. That is, the contacts 6 are arranged to be sandwiched between the pair of partitions 14, 14 arranged in the width direction Y1. One end of the corresponding covered electric wire 2 is accommodated in the space surrounded by the first side portion 32, the second side portion 33 and the bottom portion 31. The front end portion of the first side portion 32 and the front end portion of the second side portion 33 support the contact portion 34. [

The contact portion 34 is provided as a portion for making contact with the contact 102 of the mating connector 100. The contact portions 34 are supported at both ends of the first side portion 32 and the second side portion 33 in the thickness direction Z1 and are located between these side portions 32 and 33. [ A part of the contact portion 34 is formed in the shape of a tongue piece and is elastically deformable. The contact 102 which passes through the first opening 21 and enters the through hole 15 is sandwiched between the tongue shaped portions of the contact portion 34 and is electrically connected to the contact portion 34. A slip-off preventing portion 35 is formed on the rear side of the contact portion 34.

The dropout prevention portion 35 is provided to prevent the contact 6 from coming out of the housing main body 8 and is formed in the shape of a protrusion extending from the side portions 32 and 33. The dropout prevention portion 35 is inserted into the fourth opening portion 24 formed in the bottom wall 18. The escape preventing portion 35 is received in the edge portion of the fourth opening 24 when a force in the direction of withdrawing (rearward) from the housing main body 8 acts on the contact 6. As a result, the contact 6 is restricted from moving in a direction pulling out of the housing main body 8. A pressing portion 36 is formed on the rear side of the slip-off preventing portion 35.

The pressing portion 36 is provided to press-fit the contact 6 into the housing main body 8. The pressing portion 36 is formed at the edge portions of the first side portion 32 and the second side portion 33 and presses the inner surface of the bottom wall 18 of the housing main body 8. As a result, the frictional contact force between the pressing portion 36 and the bottom wall 18 is increased, and the frictional contact force between the bottom portion 31 and the top wall 17 is increased. At the rear of the pressing portion 36, pressure-contacting portions 37 and 38 are formed.

The press-contact portions 37 and 38 are provided for cutting the covering portion 3 of the covered electric wire 2. The press contact portions 37 and 38 are formed so as to extend from the bottom portion 31 of the contact 6 toward the space between the first side portion 32 and the second side portion 33. The press contact portions 37 and 38 are arranged in the longitudinal direction X1. Each of the pressure-contacting portions 37, 38 is formed in a U-shape.

Each of the pressure contact portions 37 and 38 has pressure contact blades 41 and 42 facing each other in the width direction Y1.

The gap between the facing portions of the press-contacting blades 41 and 42 is set to be substantially the same as the diameter of the entire core wire portion 4 and the core wire portion 4 is disposed between the press- can do. The press contact portions 37 and 38 are exposed to the outside of the housing main body 8 through the third openings 23 and the cover portion 3 of the covered electric wire 2, Are cut off by the pressure-contacting blades 41, 42 of the respective pressure-contacting portions 37, 38. When the covering portion 3 is cut by the press-contacting blades 41 and 42, the press-contacting blades 41 and 42 come into contact with the core wire portion 4. Thus, the electrical connection between the covered electric wire 2 and the press contact portions 37 and 38 is achieved. At this time, one end of the coated wire 2 is disposed between the first side portion 32 and the second side portion 33. A caulking portion 39 is formed at the rear of the press-contacting blades 41, 42.

The caulking portion 39 is provided as a portion for fixing the covered electric wire 2 by being caulked at one end of the covered electric wire 2. [ Each caulking portion 39 has a first piece portion 43 and a second piece portion 44 as a pair of piece portions. The first piece 43 and the second piece 44 are provided so as to sandwich the coated wire 2 in cooperation with the bottom 31. [

In the pre-engagement state, the first piece 43 and the second piece 44 are disposed to face each other in the width direction Y1. The first piece 43 is supported by the first side portion 32 and the second piece 44 is supported by the second side portion 33. The first piece 43 and the second piece 44 are engaged with each other in one direction (direction away from the bottom wall 17) in the thickness direction Z1 from the first side 32 and the second side 33, .

As shown in Fig. 6, in this embodiment, the length of the one side portion 43 and the length of the other side portion 44 are set to be the same. More specifically, the length L1 from the proximal end to the distal end of the corresponding piece 43 along the inner surface of the one piece 43 and the length L1 of the corresponding piece 44 along the inner surface of the other piece 44 The length L2 from the proximal end to the distal end is set to be the same.

The length L4 from the bottom 31 of the contact 6 to the distal end of the one side portion 43 is set larger than the distance L3 between the first side portion 32 and the second side portion 33 . More specifically, the length L4 from the proximal end of the side portion 32 to the distal end of the piece 43 along the inner side surfaces of one side portion 32 and the one side portion 43 is greater than the length L4 of the other side portion 32 Is set to be larger than the interval (L3) between the second side portions (33). Likewise, the length L5 from the bottom 31 of the contact 6 to the tip of the other piece 44 is set to be larger than the distance L3 between the first side portion 32 and the second side portion 33 . More specifically, the length L5 from the proximal end of the side portion 33 to the distal end of the piece portion 44 along the inner side surfaces of the other side portion 33 and the piece portion 44 is greater than the length L5 of the first side portion 32 and / Is set to be larger than the interval (L3) between the second side portions (33).

5 and 6, the first piece 43 is configured to be able to engage with the covering portion 3 of the covered electric wire 2 by being deformed by bending. The second piece (44) is configured such that it can be overlapped with at least a part of the first piece (43) by bending deformation.

The first piece portion 43 and the second piece portion 44 in the pre-engagement state have the first portions 45 and 45 and the second portions 46 and 46.

The first portions 45 and 45 are provided as a portion continuous to one edge portion of the first side portion 32 and the second side portion 33 in the thickness direction Z1, . The distance between the first portions 45 and 45 is set equal to the distance L3 between the first side portion 32 and the second side portion 33. [ The first portions 45 and 45 are disposed between the partition walls 14 and 14. [ The height (the length in the thickness direction Z1) of the rear end portion of the pair of pieces of wire 32, 33 to which the first portions 45, 45 are connected is smaller than the diameter of the covered wire 2 in the pre- Are set approximately the same. From the first portions 45, 45, the second portions 46, 46 extend.

The second portions 46 and 46 are connected to the first and second side portions 32 and 33 of the contact 6 by means of a water inlet (inlet, As shown in Fig. The second portions 46 and 46 form the tip portions of the corresponding first piece portions 43 and the tip portions of the second piece portions 44, respectively. The second portions 46 and 46 are formed in a tapered shape when viewed from the rear surface of the insulation displacement connector 1 in the state before the connection and proceed to the tip ends of the first piece 43 and the second piece 44 The gap between the second portions 46 and 46 is narrowed. In the pre-engagement state, the second portions 46, 46 pass through the third openings 23 and protrude to the outside of the through-hole portions 15. All of the second portions 46, 46 are located outside the housing main body 8. The chamfered portion is formed on the outer surface of the distal end portion of the second portions 46, 46.

The first piece portion 43 and the second piece portion 44 of the caulking portion 39 are curved in a curved shape when the caulking portion 39 is caulked to the covered electric wire 2. [ In this state, the first piece (43) is pressed against the covering portion (3) of the covered electric wire (2). A portion near the tip end of the first piece (43) is inserted into the covering portion (3) of the covered wire (2). In addition, the second piece (44) overlaps the first piece (43). As a result, a strong coupling between the contact 6 and the coated electric wire 2 is achieved. Further, the entire first piece 43 may be inserted into the covering portion 3.

The above is a schematic configuration of the insulation displacement connector 1.

The covered electric wire 2 is inserted between the first piece 43 and the second piece 44 of the contact 6 and connected to the first piece 43 and the second piece 44 of the contact 6 when the covered electric wire 2 is connected to the insulation- , And pressed by the press-contact portions (37, 38). The covering portion 3 of the covered electric wire 2 is cut by the press contact blades 41 and 42 of the press contact portions 37 and 38 and is brought into contact with the core wire portion 4 of the covered electric wire 2 The blades 41 and 42 are in contact with each other. Thus, the electrical connection between the covered electric wire 2 and the insulation displacement connector 1 is achieved.

Next, the first piece 43 of the caulking portion 39 is flexibly deformed by the caulking punch 50 shown in Fig. 8, so that the first piece 43 is pressed against the covering portion 3 of the covered electric wire 2. The second piece portion 44 of the caulking portion 39 is bent and deformed by the caulking punch 50 so that the first piece 43 is overlapped with a part of the first piece 43, Thereby suppressing displacement. As a result, the coupling of the caulking portion 39 of the contact 6 and the one end of the covered electric wire 2 is completed.

The caulking punch 50 is provided for caulking the caulking portion 39 of the contact 6. A plurality of caulking punches 50 are provided corresponding to the respective contacts 6 (three caulking punches 50 are shown in Fig. 8). The caulking punch 50 is arranged to be aligned with the caulking portion 39 of the corresponding contact 6 in the thickness direction Z1. A pair of recesses 50a and 50b are formed at the tip of each of the caulking punches 50. [

The pair of concave portions 50a and 50b are provided for plastic deformation of the first piece 43 and the second piece 44 of the caulking portion 39. [ The pair of concave portions 50a and 50b are disposed so as to face the first piece portion 43 and the second piece portion 44 of the corresponding contact 6 in the thickness direction Z1, . In the present embodiment, the pair of recesses 50a and 50b are formed in an arc shape in the longitudinal direction X1.

The position of one recess 50a corresponding to the first piece 43 is located closer to the contact 6 than the position of the other recess 50b corresponding to the second piece 44 Is set. As a result, when the caulking punch 50 performs caulking on the caulking portion 39, after one of the recesses 50a contacts the first piece 43, the other recess 50b, The second piece 44 comes into contact. With this configuration, the first piece 43 of the first piece 43 and the second piece 44 is first flexed and deformed, and is caulked to the covered wire 2.

As described above, according to the insulation displacement connector 1 of the present embodiment, when the covered electric wire 2 is connected to the contact 6, the second piece portion 44 of the caulked portion 39 of the contact 6 Is overlapped with the first piece (43) of the caulking portion (39). Therefore, when the force F1 for causing the tip of the first piece 43 to swell is applied to the first piece 43 from the covered wire 2, . Therefore, even when the force F1 is large, the contact 6 can more reliably maintain the engagement state between the first piece 43 and the covered electric wire 2. [ With this configuration, even when it is difficult to sufficiently secure the force acting between the first piece 43 and the covering wire 2 when the first piece 43 is caulked to the covering wire 2, 39 and the coated electric wire 2 can be increased. In the pressure-contact connector 1 in which the cover wire 2 is caulked to the contact 6 after the contact 6 is assembled to the housing 5, the housing 5 (in particular, 17) are present, it is not possible to dispose the caulking punch 50 so as to sandwich the caulking portion 39 and the covered electric wire 2 therebetween. In this case, when the first piece 43 is caulked to the covered electric wire 2, it is difficult to sufficiently secure a force acting between the first piece 43 and the covered electric wire 2. In this case, however, the coupling force between the caulking portion 39 and the covered electric wire 2 can be increased by overlapping the first piece 43 and the second piece 44 as described above. For this reason, according to the present embodiment, the force of holding the covered electric wire 2 in the insulation displacement connector 1 can be increased.

According to the insulation displacement connector 1, one end of the covered electric wire 2 is disposed in the space surrounded by the first side portion 32, the second side portion 33 and the bottom portion 31 of the contact 6. The cover wire 2 can be firmly fixed to the contact 6 by the first piece 43, the second piece 44 and the bottom 31 of the caulking portion 39 .

According to the insulation displacement connector 1, the bottom portion 31 of the contact 6 is received in the wall 17 of the housing 5. Thus, the bottom portion 31 and the caulking portion 39 disposed adjacent to the bottom portion 31 can be protected by the housing 5. Since the second opening 22 and the third opening 23 are formed, the covered electric wire 2 can be inserted into the contact 6 through the openings 22 and 23. [

According to the insulation displacement connector 1, part of the tip end side of the first piece 43 is inserted into the covering portion 3 of the covered electric wire 2. According to this configuration, the coupling force between the first piece (43) and the covered electric wire (2) can be made larger.

[Modifications]

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. For example, the following changes can be made.

(1) In the above-described embodiment, the length from the proximal end to the distal end of the first piece 43 is equal to the length from the proximal end to the distal end of the second piece 44. However, this is not the case. In the following, a configuration different from the configuration of the above embodiment will be mainly described, and the same configuration as that of the above embodiment will be denoted by the same reference numeral and will not be described.

For example, as shown in Fig. 9, the length L1A from the proximal end to the distal end of the first piece 43A and the length L2 from the proximal end to the distal end of the second piece 44 may be different. The length L1A in this case is the length from the proximal end to the distal end of the first piece 43 along the inner surface of the first piece 43A.

9, the length L1A of the first piece 43A is set so that the second piece 44 is shorter than the length L2. The length L1A of the first piece 43A may be any length as long as the first piece 43A can be caulked to the covering portion 3 of the covered wire 2. [

According to this modified example, when the first piece 43A and the second piece 44 are overlapped with each other, the tip of the first piece 43A is caught by the second piece 44, It is possible to prevent the tip end portion of the first piece portion 44 from being caught by the first piece portion 43 at the same time. As a result, it is possible to suppress the deterioration of the coupling force between the first piece (43A) and the coated wire (2) due to the above-mentioned catching phenomenon.

Particularly, the length L1A of the first piece 43A is set to be shorter than the length L2 of the second piece 44. As shown in FIG. As a result, the tip end of the first piece 43A can be more reliably inserted into the covered wire 2. Therefore, the coupling force between the first piece 43A and the covered electric wire 2 can be made higher.

(2) In the modification described above, the first piece 43A has the length L1A <the length L2 of the second piece 44, as an example. However, the length of the first one-side portion> the length of the second one-side portion is fine.

(3) In the above-described embodiment, the connection type of the mating connector is connected to the circuit board, that is, the board-to-wire type connection type has been described as an example. However, this is not the case. For example, the present invention may be applied to a form in which a mating connector is connected to a covered wire, that is, a wire-to-wire type connection form.

INDUSTRIAL APPLICABILITY The present invention can be widely applied as an insulation displacement connector and an insulation displacement connector with electric wire.

1: pressure-spliced connector 2: coated wire
3: covered portion 4: core portion
5: housing 6: contact
15: Through hole portion (receiving portion) 17: Thick wall (wall portion)
22, 23: opening 31: bottom (connecting portion)
32: first side portion 33: second side portion
39: caulking portion 41, 42: pressure-contacting blade
43: first piece 44: second piece
X1: longitudinal direction Y1: width direction (parallel direction)

Claims (7)

An insulation displacement connector to be connected to a covered electric wire having a structure in which a core wire portion is covered with a covering portion,
A contact extending in a predetermined longitudinal direction,
And a housing for holding the contact,
Wherein the contact includes a press-contacting blade for cutting the covering portion and a caulking portion caulking on the covering portion,
Wherein the caulking portion has a first piece and a second piece as a pair of pieces facing each other in a predetermined parallel direction orthogonal to the longitudinal direction,
Wherein the first piece portion is configured to be able to engage with the covering portion of the covered electric wire by bending deformation,
And the second piece portion is configured to be capable of overlapping at least a part of the first piece portion by being deformed by bending. The method according to claim 1,
The contact further includes a first side portion supporting the first piece portion, a second side portion supporting the second piece portion, and a connection portion connecting the first side portion and the second side portion to each other,
Wherein a part of the covered electric wire is disposed in a space surrounded by the first side portion, the second side portion, and the connecting portion. The method of claim 2,
The housing includes a receiving portion for receiving the contact, a wall portion for receiving the connecting portion, and an opening,
Wherein the opening is formed to expose the pressure-contacting blade, the connecting portion, and the caulking portion to the outside of the housing. The method according to claim 1,
Wherein a length from a proximal end to a distal end of the first piece is different from a length from a proximal end to a distal end of the second piece. The method of claim 4,
And the length of the first piece portion is set shorter than the length of the second piece portion. A pressure-contact connector according to any one of claims 1 to 5,
And a covered wire connected to the contact,
Wherein the first piece portion is coupled to the covering portion of the covered electric wire,
And the second piece portion overlaps with at least a part of the first piece portion. The method of claim 6,
Wherein at least a part of the first piece is inserted into the covering portion of the covered electric wire.

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