JP7841704B2 - Crimp terminals and crimp connectors - Google Patents

Description

This invention relates to crimp terminals and crimp connectors, and more particularly to crimp terminals and crimp connectors having a structure for holding insulated wires that are crimp-connected.

Conventionally, for connecting insulated wires, which have a core wire covered with a protective coating, a crimp connector with a U-shaped slot for receiving the insulated wire has been used. In such a crimp connector, when the insulated wire is inserted into the U-shaped slot, the coating is cut by the crimp contact piece within the slot, establishing electrical conductivity between the core wire and the crimp contact piece.

Furthermore, this pressure-connected connector employs a wire-holding structure to prevent external force from being applied to the portion where electrical conductivity has been established. This wire-holding structure is also known as a "strain relief" structure.

Patent Document 1 below discloses a press-fit connector comprising a contact having a slot portion that bites into the insulation of a coated wire and contacts the core wire, and an insulating housing that holds the contact. The insulating housing of this press-fit connector is provided with a wire holding groove that receives a portion of the coated wire pressed into the slot, and a holding arm for holding the coated wire is formed at the opening of the wire holding groove.

Patent Document 2 below discloses a crimp connector including a crimping blade for cutting the insulation of an insulated wire and a crimping portion for crimping onto the insulation of the insulated wire.

Japanese Utility Model Publication No. 63-77266 Patent No. 6193050

As with the press-fit connector described in Patent Document 1 above, when a wire-holding structure is provided in the insulating housing, the holding arms are made of resin and therefore have almost no elasticity. Consequently, if the gap between opposing holding arms is narrowed to improve the holding ability of the insulated wire, the holding arms may become insufficiently strong and crack. Therefore, in order to provide sufficient strength to the holding arms, their size must be maintained at a certain level, which hinders the miniaturization of the entire press-fit connector.

Furthermore, in the crimp connector described in Patent Document 2, in addition to the step of inserting the insulated wire into the crimping blade, a step of crimping the crimping portion to the insulated portion of the wire was required, leading to an increase in the number of work steps.

The objective of this invention is to provide a crimp terminal and a crimp connector that enable miniaturization of the wire holding portion without compromising the ability to hold insulated wires.

To solve the above problems, the crimp terminal of the present invention is
Contact point and,
It has a slot for receiving an insulated wire in which the core wire is covered with an insulating layer, and a pressure contact section that cuts the insulating layer and presses it against the core wire when the insulated wire is inserted into the slot,
The device comprises a pair of elastic, hook-shaped wire holding portions, which are integrally formed with the contact portion and the pressure contact portion and have an inner surface that receives the coating portion of the insulated wire.

Furthermore, in one embodiment of the present invention, the pair of hook-shaped wire holding portions face each other at different positions with respect to the extending direction of the insulated wire into which it is inserted.

Furthermore, in one embodiment of the present invention, each of the pair of hook-shaped wire holding portions is J-shaped, having a base portion continuous with the crimping portion and a tip portion bent inward in the width direction perpendicular to the extending direction of the insulated wire. The distance between the tip portions, when viewed from the extending direction of the insulated wire, is less than or equal to the plate thickness of the crimping terminal.

Furthermore, in one embodiment of the present invention, the pair of hook-shaped wire holding portions face each other at the same position with respect to the extending direction of the insulated wire into which it is inserted.

Furthermore, the crimp connector of the present invention comprises a crimp terminal according to any of the above embodiments and a housing having a housing portion for accommodating the crimp terminal.

Furthermore, in one embodiment of the present invention, the housing is provided with a plurality of housing sections arranged in a width direction perpendicular to the extending direction of the insulated wire, and each of the housing sections accommodates the crimp terminal.

According to one aspect of the present invention, a crimp terminal can be provided that allows for miniaturization of the wire holding portion without impairing the ability to hold insulated wires.

According to one aspect of the present invention, the design flexibility for narrowing or widening the distance between a pair of hook-shaped wire holding portions can be improved.

According to one aspect of the present invention, by making the distance between a pair of hook-shaped wire holding portions less than or equal to the plate thickness of the crimp terminal when viewed from the extending direction of the insulated wire, it is possible to improve the holding performance of the insulated wire inserted into the wire holding portion.

According to one aspect of the present invention, a pair of wire holding portions can restrict the movement of the insulated wire inserted into the wire holding portions in the direction opposite to the insertion direction.

According to one aspect of the present invention, a crimp connector is provided that allows for miniaturization of the wire holding portion without impairing the ability to hold insulated wires.

According to one aspect of the present invention, since the housing does not require a structure for holding the insulated wire, the widthwise dimension of the crimp connector can be reduced. In particular, when the hook-shaped wire-holding portions face each other at different positions with respect to the extending direction of the inserted insulated wire, even if the wire-holding portion bends outward in the widthwise direction when the insulated wire is inserted, it will not contact the adjacent wire-holding portion. Therefore, it is possible to reduce the pitch in the widthwise direction.

This is an external perspective view showing a state in which an insulated wire is connected to a crimp connector according to the first embodiment of the present invention. Figure 2(A) is an external perspective view of the crimp connector of the first embodiment with the insulated wire removed, viewed from the rear; Figure 2(B) is an external perspective view of the crimp connector of Figure 2(A) viewed from the front; Figure 2(C) is a top view of the crimp connector of Figure 2(A); and Figure 2(D) is a front view of the crimp connector of Figure 2(A). Figure 3(A) is an external perspective view of the crimp terminal used in the crimp connector of the first embodiment of the present invention, viewed from the front, and Figure 3(B) is an external perspective view of the crimp terminal of Figure 3(A) viewed from the rear. Figure 4(A) is a front view of the crimp terminal shown in Figure 3(A), Figure 4(B) is a left side view, Figure 4(C) is a right side view, Figure 4(D) is a rear view, Figure 4(E) is a top view, and Figure 4(F) is a bottom view. Figure 5(A) is a perspective view showing a state in which an insulated wire is crimped to the crimp terminal of the first embodiment of the present invention, and Figure 5(B) is a perspective view of the crimp terminal and insulated wire of Figure 5(A) viewed from a different direction. This is an external perspective view showing a state in which an insulated wire is connected to a crimp connector according to the second embodiment of the present invention. Figure 7(A) is an external perspective view of the crimp connector of the second embodiment with the insulated wire removed, viewed from the rear; Figure 7(B) is an external perspective view of the crimp connector of Figure 7(A) viewed from the front; Figure 7(C) is a top view of the crimp connector of Figure 7(A); and Figure 7(D) is a front view of the crimp connector of Figure 7(A). Figure 8(A) is a perspective view of the crimp terminal used in the crimp connector of the second embodiment of the present invention, viewed from the front, and Figure 8(B) is a perspective view of the crimp terminal of Figure 8(A) viewed from the rear. Figure 9(A) is a front view of the crimp terminal shown in Figure 8(A), Figure 9(B) is a left side view, Figure 9(C) is a right side view, Figure 9(D) is a rear view, Figure 9(E) is a top view, and Figure 9(F) is a bottom view. This is a plan view of a crimp terminal punched out from a metal sheet. Figure 11(A) is a perspective view showing a state in which an insulated wire is crimped to a crimp terminal of the second embodiment of the present invention, and Figure 11(B) is a perspective view of the crimp terminal and insulated wire of Figure 11(A) viewed from a different direction.

[First Embodiment]
The first embodiment of the crimp connector 10 will be described with reference to Figures 1, 2(A)-2(D), 3(A), 3(B), 4(A)-4(F), 5(A), and 5(B). The embodiments described below illustrate the crimp connectors and terminals of the present invention, but the present invention is not limited to these. The present invention should also be equally applicable to other forms of crimp terminals and crimp connectors described in the claims.

As shown in Figure 1, the press-fit connector 10 comprises a housing 100 made of synthetic resin and a press-fit terminal 200 that is press-fitted and held in a housing portion 120 of the housing 100. As shown in Figures 2(A) to 2(D), the housing 100 is formed in a rectangular box shape with a front surface 101, a rear surface 102, a right side surface 103, a left side surface 104, and a bottom surface 105, and is open at the top.

In the following explanation, the direction in which this pressure-fit connector 10 is connected to the mating connector will be referred to as the mating direction or front-to-back direction. Furthermore, among the directions perpendicular to the mating direction, the direction perpendicular to the right side 103 and the left side 104 will be referred to as the width direction, and the direction perpendicular to both the mating direction and the width direction, and perpendicular to the bottom surface 105, will be referred to as the up-and-down direction. Additionally, in the mating direction, the side facing the mating connector will be referred to as the rear side or back, and the opposite side as the front side or front.

Between the right side 103 and the left side 104 of the housing 100, a plurality (five in the first embodiment) of housing sections 120 are provided, arranged parallel to each other in the width direction. Each housing section 120 is a long space in the front-to-back direction, separated in the width direction by a partition wall 106 that extends from the rear surface 102 forward to just before the front surface 101. The crimp terminals 200 are press-fitted and housed in each housing section 120. Each partition wall 106 has a slot 107 with its upper portion cut out on the rear side of the front surface 101. Furthermore, on the widthwise inner surfaces of the right side 103 and left side 104, slot recesses 108 are formed, with their upper portions recessed outward in the width direction on the rear side of the front surface 101. These slots 107 and slot recesses 108 are spaces that allow deformation when the retaining pieces 231A and 231B of the crimp terminals 200, described later, bend outward in the width direction.

On the front surface 101 of the housing 100, wire entry points 109 are formed at positions corresponding to each housing section 120. Each wire entry point 109 is a U-shaped slot-like opening that opens upwards, receiving insulated wires 300 inserted from above. Furthermore, on the rear surface 102 of the housing 100, multiple contact insertion holes 110 are formed in the width direction, corresponding to each housing section 120, and extending through the rear surface 102 to receive contacts of the mating connector.

The crimp terminal 200 is a single, integrated piece formed by punching and bending a single conductive metal sheet (for example, a plated copper sheet). As shown in Figures 3(A), 3(B), and 4(A)-4(F), it has a contact portion 210, a crimp portion 220, and a wire holding portion 230. The contact portion 210 has a flat contact base portion 211 that extends in the mating direction and width direction, and a pair of elastic contact pieces 212A and 212B that extend downward parallel to each other from both ends of the contact base portion 211 in the width direction. The contacts (not shown) of the mating connector are inserted and connected between these elastic contact pieces 212A and 212B.

The contact portion 220 has a first contact portion 221 and a second contact portion 222, which are spaced apart in the front-rear direction. The first contact portion 221 has its lower end connected to the front end of the contact base portion 211, and extends upward, bending approximately vertically from the front end of the contact base portion 211. It includes a pair of first contact blades 224A and 224B that face each other in the width direction, flanking a first contact slot 223 that opens in a U-shape at the top.

The second pressure contact section 222 is spaced apart from the first pressure contact blades 224A and 224B in the front-rear direction and includes a pair of second pressure contact blades 226A and 226B that are facing each other in the width direction, flanking a second pressure contact slot 225 that is substantially the same shape as the first pressure contact slot 223 and has a U-shaped opening at the top. In the width direction, the first pressure contact blade 224A and the second pressure contact blade 226A on one side are connected by a connecting plate 227A whose upper ends extend in the front-rear direction. Similarly, the first pressure contact blade 224B and the second pressure contact blade 226B on the other side in the width direction are connected by a connecting plate 227B whose upper ends extend in the front-rear direction.

The wire holding portion 230 is integrally formed with the contact portion 210 and the pressure contact portion 220, and has a pair of elastic hook-shaped holding pieces 231A and 231B that receive the coating portion of the insulated wire 300 on the inside. These hook-shaped holding pieces 231A and 231B are each J-shaped, and have a base portion 233A and 233B that is continuous with the pressure contact portion 220, and a tip portion 234A and 234B that is bent inward in the width direction. The space between these hook-shaped holding pieces 231A and 231B is the wire holding space 232.

The base portions 233A and 233B have their lower ends bent approximately vertically at the same position in a side view and extending backward, and are connected to the lower end portion of the second pressure contact portion 222. With this configuration, the retaining pieces 231A and 231B face each other at the same position with respect to the extending direction of the insulated electric wire 300 inserted into the electric wire holding space 232. In addition, a base slot 235 is formed between the base portions 233A and 233B, extending backward to a position that does not reach the lower end portion of the second pressure contact portion 222, thereby allowing the retaining pieces 231A and 231B to be elastically deformed independently in the width direction. Note that the base portions 233A and 233B connected to the lower end portion of the second pressure contact portion 222 are located below the lower end portion of the first pressure contact portion 221. This allows the retaining pieces 231A and 231B to bend more significantly outward in the width direction when the insulated wire 300 is inserted between the tip portions 234A and 234B.

The crimp terminal 200 is press-fitted into the housing portion 120 formed in the housing 100. This aligns the central portions of the elastic contact pieces 212A and 212B of the contact portion 210 with the virtual center line of the contact insertion hole 110 in the housing 100. In this state, when a contact (not shown) of the mating connector is inserted into the contact insertion hole 110, the contact is inserted between the elastic contact pieces 212A and 212B, establishing electrical conductivity. Furthermore, the center portion in the width direction between the retaining pieces 231A and 231B of the wire retaining portion 230 aligns with the center portion in the width direction of the wire entry opening 109 in the housing 100.

With the crimp terminal 200 pressed into the housing portion 120 in this manner, the insulated wire 300 is crimp-connected to the crimp terminal 200. Referring to Figures 5(A) and 5(B), the connection state between the crimp terminal 200 and the insulated wire 300 at this time will be explained. The insulated wire 300 is inserted into the first crimp slot 223, the second crimp slot 225, and the wire holding space 232 from above the first crimp portion 221, the second crimp portion 222, and the tip portions 234A and 234B of the wire holding portion 230.

At this time, the portion of the insulated wire 300 pressed into the first pressure-fitting slot 223 has its insulation cut by the inner pieces of the first pressure-fitting blades 224A and 224B, and the core wire is pressure-connected to the inner pieces of the first pressure-fitting blades 224A and 224B. Similarly, the portion of the insulated wire 300 pressed into the second pressure-fitting slot 225 has its insulation cut by the inner pieces of the second pressure-fitting blades 226A and 226B, and the core wire is pressure-connected to the inner pieces of the second pressure-fitting blades 226A and 226B. Also at this time, the insulated wire 300 passes between the pair of connecting plates 227A and 227B and is inserted into the space between the first pressure-fitting slot 223 and the second pressure-fitting slot 225.

Furthermore, the portion of the insulated wire 300 on the front side in the fitting direction is inserted from above between the tip portions 234A and 234B of the retaining pieces 231A and 231B. Then, the retaining pieces 231A and 231B bend outward in the width direction, using their base portions 233A and 233B as fulcrums, so that their tip portions 234A and 234B pass through the insulated wire 300. At this time, the retaining pieces 231A and 231B can enter the slot 107 formed on the rear side of the front surface 101 of the partition wall 106 of the housing 100, or the slot recess 108 formed on the rear side of the front surface 101 of the right side 103 and left side 104. Therefore, the retaining pieces 231A and 231B can bend significantly in the width direction.

When the insulated wire 300 passes through the tip portions 234A and 234B, the bending of the retaining pieces 231A and 231B is released, and they displace inward in the width direction, using the base portions 233A and 233B as fulcrums, returning to their original state. The insulated wire 300 then remains held in the wire holding space 232 between the retaining pieces 231A and 231B.

The retaining pieces 231A and 231B have a J-shaped hook design, which prevents the insulated wire 300 held in the wire holding space 232 from moving upward, thus preventing the insulated wire 300 from falling off the crimp terminal 200 due to factors such as vibration or upward pulling pressure.

[Second Embodiment]
Next, the crimp connector 10' of the second embodiment will be described with reference to Figures 6, 7(A)-7(D), 8(A), 8(B), 9(A)-9(F), 10, 11(A), and 11(B). The crimp connector 10' of the second embodiment is identical to the crimp connector 10 of the first embodiment except for the configuration of the crimp terminal 200'. Therefore, identical components will be denoted by the same reference numerals, and descriptions of identical components will be omitted.

As shown in Figures 8(A), 8(B), and 9(A)-9(F), the crimp terminal 200' has a contact portion 210, a crimp portion 220, and a wire holding portion 230', similar to the crimp terminal 200 of the first embodiment. Since the configuration of the contact portion 210 and the crimp portion 220 of the crimp terminal 200' in the second embodiment is substantially the same as that of the contact portion 210 and the crimp portion 220 of the crimp terminal 200 of the first embodiment, a detailed explanation will be omitted, and only the configuration of the wire holding portion 230' will be described.

In the second embodiment, the wire holding portion 230' differs from that of the first embodiment in that the pair of hook-shaped holding pieces 231A' and 231B', described later, face each other at different positions with respect to the extending direction of the inserted insulated wire 300, that is, at positions offset front to back. The holding pieces 231A' and 231B' of the wire holding portion 230' in the second embodiment are formed integrally with the contact portion 210 and the pressure contact portion 220, similar to the first embodiment, and receive the insulated portion of the insulated wire 300 internally. Each holding piece 231A' and 231B' is J-shaped and has a base portion 233A' and 233B' that is continuous with the pressure contact portion 220, and a tip portion 234A' and 234B' that is bent inward in the width direction.

As is clear from the drawings, the shapes of the retaining pieces 231A', 231B' and the tip portions 234A', 234B' are substantially the same as those of the first embodiment, but the lengths of the base portions 233A', 233B' in the front-rear direction differ from those of the first embodiment. That is, the front-rear extension length of the base portion 233A' on one side in the width direction (right side when viewed from the front) is shorter than the front-rear extension length of the base portion 233B' on the other side in the width direction (left side when viewed from the front). In other words, the base portions 233A', 233B' are connected to the lower end portion of the second pressure contact portion 222 at the same position in the front-rear direction, but the length of the right base portion 233A' is shorter than the length of the left base portion 233B'. Specifically, the length of the right base portion 233A' is shorter than the length of the left base portion 233B' by at least the thickness of the metal plate forming this pressure contact terminal 200. As a result, the right-side retaining piece 231A' bends approximately vertically upward at the rear compared to the left-side retaining piece 231B', while the left-side retaining piece 231B' bends approximately vertically upward at the front.

In this configuration, the retaining pieces 231A' and 231B' face each other at different positions with respect to the extending direction of the insulated wire 300 being inserted, forming a wire holding space 232' between them. Also, as shown in Figure 10, since the lengths of the right and left base portions 233A' and 233B' in the width direction are different, the positions of the tip portions 234A' and 234B' on the metal plate when punched out are not in the same position in the longitudinal direction, but are offset from each other. Therefore, the distance between the tip portions 234A' and 234B' when viewed from the longitudinal direction of the metal plate can be narrowed, allowing the crimp terminal 200' to be punched out. Specifically, the distance between the tip portions 234A' and 234B' when viewed from the longitudinal direction of the metal plate can be made less than or equal to the thickness of the metal plate forming the crimp terminal 200'. Furthermore, the distance between the tip portions 234A' and 234B' when viewed from the longitudinal direction of the metal plate may be set to the same position or to overlapping positions.

The retaining pieces 231A', 231B' and tip portions 234A', 234B' of the crimp terminal 200' formed in this manner are positioned so as not to overlap when viewed from the width direction (side view). Therefore, the right retaining piece 231A' and the left retaining piece 231B' will not come into contact with or interfere with each other, even if the tip portions 234A' and 234B' are formed in a position that overlaps when viewed from the front-to-back direction.

Furthermore, similar to the first embodiment, a base slot 235' is formed between the base portions 233A' and 233B', extending rearward to a position that does not reach the lower end portion of the second pressure contact portion 222. This allows the retaining pieces 231A' and 231B' to be elastically deformable in the width direction.

The crimp terminal 200' is press-fitted into the housing portion 120 formed in the housing 100. This aligns the center portions of the elastic contact pieces 212A and 212B of the contact portion 210 with the center line of the contact insertion hole 110 in the housing 100. Furthermore, the center portions of the retaining pieces 231A' and 231B' of the wire retaining portion 230', when viewed from the fitting direction, align with the center portion in the width direction of the wire entry opening 109 in the housing 100.

With the crimp terminal 200' pressed into the housing 120, the insulated wire 300 is crimp-connected to the crimp terminal 200'. As shown in Figures 11(A) and 11(B), the insulated wire 300 is inserted into the first crimp slot 223, the second crimp slot 225, and the wire holding space 232' from above the first crimp section 221, the second crimp section 222, and the tip portions 234A' and 234B' of the wire holding section 230'.

At this time, similar to the first embodiment, the portion of the insulated wire 300 pressed into the first pressure-fitting slot 223 has its insulation cut by the inner pieces of the first pressure-fitting blades 224A and 224B, and the core wire is pressure-connected to the inner pieces of the first pressure-fitting blades 224A and 224B. Similarly, the portion of the insulated wire 300 pressed into the second pressure-fitting slot 225 has its insulation cut by the inner pieces of the second pressure-fitting blades 226A and 226B, and the core wire is pressure-connected to the inner pieces of the second pressure-fitting blades 226A and 226B. Also at this time, the insulated wire 300 passes between the pair of connecting plates 227A and 227B and is inserted into the space between the first pressure-fitting slot 223 and the second pressure-fitting slot 225.

Furthermore, the portion of the insulated wire 300 facing forward in the fitting direction is inserted from above between the tip portions 234A' and 234B' of the retaining pieces 231A' and 231B'. Then, the retaining pieces 231A' and 231B' bend outward in the width direction, using their base portions 233A' and 233B' as fulcrums, so that their tip portions 234A' and 234B' pass through the insulated wire 300. At this time, the retaining pieces 231A' and 231B' can enter the slot 107 formed on the rear side of the front surface 101 of the partition wall 106 of the housing 100, or the slot recess 108 formed on the rear side of the front surface 101 of the right side 103 and left side 104.

In this configuration, the retaining pieces 231A' and 231B' are positioned offset in the front-to-back direction when viewed from the width direction. Therefore, even if the retaining pieces 231A' and 231B' of adjacent crimp terminals 200' bend outward in the width direction, the retaining piece 231A' of one crimp terminal 200' and the retaining piece 231B' of the adjacent crimp terminal 200' will not come into contact with or interfere with each other. Consequently, a narrow-pitch crimp connector 10' can be created by narrowing the spacing between the crimp terminals 200' incorporated into the housing 100.

When the insulated wire 300 passes through the tip portions 234A' and 234B', the bending of the retaining pieces 231A' and 231B' is released, and they displace inward in the width direction, using the base portions 233A' and 233B' as fulcrums, returning to their original state. The insulated wire 300 then remains held in the wire holding space 232' between the retaining pieces 231A' and 231B'.

The retaining pieces 231A' and 231B' have a J-shaped hook configuration, and the gap between the tips 234A' and 234B' is less than or equal to the plate thickness of the crimp terminal 200' when viewed from the front-to-back direction. Therefore, the retaining pieces 231A' and 231B' reliably prevent the insulated wire 300 held in the wire holding space 232' from moving upward, preventing the insulated wire 300 from falling out of the crimp terminal 200' due to factors such as vibration or upward tensile pressure.

The first and second embodiments of the crimp connectors 10 and 10' have been described above. As described above, by integrally forming the wire holding portions 230 and 230' on the crimp terminals 200 and 200', it becomes unnecessary to form a so-called strain relief structure on the housing 100, making it possible to miniaturize the crimp connectors 10 and 10'.

Furthermore, the wire holding portions 230 and 230' formed on the crimp terminals 200 and 200' are made of metal and possess spring properties. Therefore, there is no concern about damage such as cracks that may occur when strain relief is formed in the resin housing 100. Consequently, the crimp terminals 200 and 200' can accommodate the press-fitting of insulated wires 300 of different diameters.

Furthermore, as in the crimp terminal 200' of the second embodiment, by varying the lengths of the base portions 233A' and 233B' of the retaining pieces 231A' and 231B' of the wire holding portion 230', the shape of the tip portions 234A' and 234B' can be easily changed. In other words, the shape of the tip portions 234A' and 234B' can be not only triangular as in the second embodiment, but also in other shapes to match the size of the insulated wire 300 being press-fitted. This makes it easier to adjust the size of the wire holding space 232' to match the size of the insulated wire 300 during the design phase, and to balance the insertion force and wire holding force during press-fitting of the insulated wire 300.

Furthermore, in the above embodiment, the J-shaped retaining pieces 231A, 231B, 231A', and 231B' of the crimp terminals 200 and 200' were described as being formed by press punching, but they may also be formed by press bending to create the J-shape.

10, 10' Crimp Connector 100 Housing 101 Front 102 Rear 103 Right Side 104 Left Side 105 Bottom 106 Partition Wall 107 Slot 108 Slot Recess 109 Wire Inlet 110 Contact Insertion Hole 120 Housing Section 200, 200' Crimp Terminal 210 Contact Section 211 Contact Base 212A, 212B Elastic Contact Piece 220 Crimp Section 221 First Crimp Section 222 Second Crimp Section 223 First Crimp Slot 224A, 224B First Crimp Blade 225 Second Crimp Slot 226A, 226B Second Crimp Blade 227A, 227B Connecting Plate 230, 230' Wire Holding Section 231A, 231B, 231A', 231B' Holding piece 232, 232' Wire holding space 233A, 233B, 233A', 233B' Base 234A, 234B, 234A', 234B' Tip 235 Base slot 300 Covered wire

Claims (3)

Contact point and,
It has a slot for receiving an insulated wire in which the core wire is covered with an insulating layer, and a pressure contact section that cuts the insulating layer and presses it against the core wire when the insulated wire is inserted into the slot,
The device comprises a pair of elastic, hook-shaped wire holding portions, which are integrally formed with the contact portion and the pressure contact portion and have an inner surface that receives the coating portion of the insulated wire ,
Each of the pair of hook-shaped wire holding portions is J-shaped and has a base portion continuous with the crimping portion and a tip portion bent inward in the width direction perpendicular to the extending direction of the insulated wire, forming a crimping terminal.
A crimp terminal in which, by making the length of one base of the pair of hook-shaped wire-holding portions in the extending direction shorter than the length of the other base in the extending direction, the wire-holding portions face each other at different positions with respect to the extending direction, and the distance between the tips of the insulated wire when viewed from the extending direction is less than or equal to the thickness of the crimp terminal . A crimp connector comprising a crimp terminal as described in claim 1 , and a housing having a housing portion for housing the crimp terminal. The crimp connector according to claim 2 , wherein the housing is provided with a plurality of housing portions arranged in a width direction perpendicular to the extending direction of the insulated electric wire, and each housing portion houses the crimp terminal.