Terminal metal fitting

Abstract

To achieve stabilization of a contact pressure with respect to an electric wire.SOLUTION: A terminal metal fitting A includes: a terminal main body 10 having a first holding piece 12U and a second holding piece 12L arranged so as to sandwich a core wire 41 of an electric wire 40; and a slide member 30 that is attached to the terminal main body 10 to displace the first holding piece 12U and the second holding piece 12L so as to approach each other. In the first holding piece 12U, a first edge part 21U having a shape extending in a direction intersecting a circumferential direction of the core wire 41 and capable of biting into the core wire 41, and a first accommodation part 23U partitioned in the circumferential direction by the first edge part 21U and capable of accommodating a part of the core wire 41 are formed. In the second holding piece 12L, a second edge part 21L having a shape extending in a direction intersecting the circumferential direction of the core wire 41 and capable of biting into the core wire 41 and a second accommodation part 23L partitioned in the circumferential direction by the second edge part 21L and capable of accommodating a part of the core wire 41 are formed.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a terminal fitting. [Background technology]

[0002] Patent Document 1 discloses a terminal in which the core wire of an electric wire is inserted between upper and lower holding protrusions formed on the terminal body, and a slide part is placed over the upper and lower holding protrusions to press the upper and lower holding protrusions against the core wire. The pressing force of the upper and lower holding protrusions against the core wire ensures contact pressure between the terminal and the core wire. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-205232 Summary of the Invention [Problem to be solved by the invention]

[0004] When the terminal body is made of copper and the core wire is made of aluminum, there is a concern that the core wire will soften when it becomes hot, reducing the contact pressure between the terminal body and the core wire. Also, when the terminal body and core wire are used in an environment with large temperature fluctuations, the difference in the linear expansion coefficients of copper and aluminum causes the contact pressure between the terminal and the core wire to fluctuate.

[0005] The terminal fitting of the present disclosure has been completed in light of the above circumstances, and aims to stabilize the contact pressure between the terminal fitting and the electric wire. [Means for solving the problem]

[0006] The terminal fitting of the present disclosure comprises: a terminal body having a pair of holding pieces arranged to sandwich a core wire of the electric wire; a slide member attached to the terminal body to displace the pair of holding pieces so as to approach each other, At least one of the pair of holding pieces has: an edge portion extending in a direction intersecting a circumferential direction of the core wire and capable of biting into the core wire; The edge portion defines a housing portion in the circumferential direction, the housing portion being capable of housing a portion of the core wire. [Effects of the Invention]

[0007] According to the terminal fitting of the present disclosure, the contact pressure between the terminal fitting and the electric wire can be stabilized. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing a state in which an electric wire is connected to a terminal fitting in the first embodiment. [Figure 2] FIG. 2 is a side cross-sectional view showing a state in which an electric wire is connected to a terminal fitting. [Figure 3] FIG. 3 is a cross-sectional view taken along line XX in FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line YY in FIG. [Figure 5] FIG. 5 is a perspective view of the terminal body. [Figure 6] FIG. 6 is a partially enlarged cross-sectional side view of the terminal body. [Figure 7] FIG. 7 is a cross-sectional view taken along line ZZ in FIG. [Figure 8] FIG. 8 is a perspective view of the slide member. DETAILED DESCRIPTION OF THE INVENTION

[0009] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described. Any combination of the following multiple embodiments within a range that does not cause contradictions is also included in the description of the present invention.

[0010] The terminal fitting of the present disclosure comprises: (1) A terminal includes a terminal body having a pair of retaining pieces arranged to sandwich the core wire of an electric wire, and a sliding member attached to the terminal body to move the pair of retaining pieces closer together. At least one of the pair of retaining pieces has an edge portion extending in a direction intersecting the circumferential direction of the core wire and capable of biting into the core wire, and a housing portion circumferentially defined by the edge portion and capable of housing a portion of the core wire. With this configuration, even if the core wire softens in a high-temperature environment, a portion of the core wire remains housed within the housing portion, thereby maintaining contact pressure between the core wire and the retaining pieces. Furthermore, if the terminal body and the core wire have different linear expansion coefficients, there is a concern that the contact pressure between the retaining pieces and the core wire will fluctuate in environments with large temperature fluctuations. However, because the core wire is bitten into the edge portion, the contact pressure between the retaining pieces and the core wire does not fluctuate. Therefore, the present disclosure stabilizes contact pressure with the electric wire.

[0011] (2) In (1), it is preferable that the surface of the holding piece facing the core wire has a step portion that divides the facing surface into two regions at different radial positions in the axial direction of the core wire, a convex-side pressing portion that connects to the convex portion of the step portion, and a concave-side pressing portion that connects to the concave portion of the step portion, and the edge portion and the accommodating portion are disposed in the convex-side pressing portion. According to this configuration, the edge portion and the accommodating portion are formed in the convex-side pressing portion that connects to the convex side of the step portion, of the two pressing portions, so that the edge portion can be deeply inserted into the core wire and the core wire can be deeply accommodated in the accommodating portion.

[0012] (3) In (2), it is preferable that the edge portion and the accommodating portion are arranged so as to face the corners of the convex portion. The convex portion of the step portion is a portion that strongly presses the core wire when the core wire is clamped by the pair of holding pieces. Since the edge portion and the accommodating portion are arranged so as to face the corners of the convex portion, the edge portion can be made to bite more deeply into the core wire and the core wire can be accommodated more deeply in the accommodating portion.

[0013] (4) In (3), it is preferable that the step portion has a first step portion formed on one of the pair of holding pieces and a second step portion formed on the other of the pair of holding pieces, the first step portion and the second step portion being disposed at different positions in the axial direction of the core wire and being oriented so as to bend the core wire along the step shapes of the first step portion and the second step portion. With this configuration, the step shapes of the first step portion and the second step portion can further stabilize the contact pressure between the pair of holding pieces and the core wire.

[0014] (5) In any of (1) to (4), it is preferable that the pair of edge portions are arranged with a circumferential gap therebetween, and that the holding piece is formed with an auxiliary edge portion that extends circumferentially to connect the pair of edge portions and defines the storage portion. With this configuration, the auxiliary edge portion bites into the core wire, thereby restricting relative axial movement of the core wire with respect to the holding piece.

[0015] [Details of the embodiments of the present disclosure] [Example 1] A terminal fitting A according to a first embodiment of the present disclosure will be described with reference to Figures 1 to 8. The present invention is not limited to these examples, but is defined by the claims, and includes all modifications within the meaning and scope of the claims. In this first embodiment, the front-to-back direction is defined as the F direction in Figures 1, 2, 5, 6, and 8. The up-down direction is defined as the H direction in Figures 1 to 8. The left-to-right direction is defined as the R direction in Figures 1, 3 to 5, 7, and 8.

[0016] The terminal fitting A of the first embodiment is a member that is electrically connected to the front end of the electric wire 40. The electric wire 40 is a well-known member that has a core wire 41 made of aluminum or an aluminum alloy and an insulating coating 42 that surrounds the core wire 41. The axial direction of the electric wire 40 (core wire 41) and the front-to-rear direction of the terminal fitting A are used synonymously. The circumferential direction of the electric wire 40 (core wire 41) and the width direction and left-to-right direction of the terminal fitting A are used synonymously.

[0017] The terminal fitting A is made of copper or a copper alloy and is constructed by assembling a terminal body 10 and a slide member 30. The terminal body 10 is a single component formed by bending a metal plate. The terminal fitting A has an elongated shape in the front-to-rear direction as a whole. A rectangular tube portion 11 is formed in the area of ​​the terminal body 10 excluding the rear end portion. A mating terminal (not shown) is inserted into the rectangular tube portion 11 from the front of the terminal body 10. A resilient contact piece (not shown) that resiliently contacts the mating terminal is arranged inside the rectangular tube portion 11.

[0018] The rear end of the terminal body 10 is formed with a first holding piece 12U extending rearward in a cantilevered manner from the rear end of the upper plate of the rectangular tube portion 11, and a second holding piece 12L extending rearward in a cantilevered manner from the rear end of the lower plate of the rectangular tube portion 11. The first holding piece 12U and the second holding piece 12L are spaced apart in the up-down direction intersecting the axial direction of the electric wire 40. The inner surface (lower surface) of the first holding piece 12U is defined as a first opposing surface 13U facing the second holding piece 12L. The inner surface (upper surface) of the second holding piece 12L is defined as a second opposing surface 13L facing the first holding piece 12U.

[0019] The first holding piece 12U has a first outer plate portion 14U and a first inner plate portion 15U overlapping the inner surface (lower surface) of the first outer plate portion 14U. The first outer plate portion 14U is a portion formed over the entire length of the first holding piece 12U. The first inner plate portion 15U is formed only in an area of ​​the first holding piece 12U excluding the rear end portion. The rear end portion of the first inner plate portion 15U forms a first step portion 16U. The first opposing surface 13U has a first step portion 16U, a first convex side pressing portion 17U, and a first concave side pressing portion 18U.

[0020] The first convex side pressing portion 17U is located forward of the first step portion 16U and is connected to a convex portion 19 (corner portion) of the first step portion 16U. The first convex side pressing portion 17U is formed by the first inner plate portion 15U. The first concave side pressing portion 18U is located rearward of the first step portion 16U and is connected to a concave portion 20 (corner portion) of the first step portion 16U. The first concave side pressing portion 18U is formed by the first outer plate portion 14U. The first convex side pressing portion 17U is located at a position lower than the first concave side pressing portion 18U (a position closer to the second opposing surface 13L).

[0021] The first opposing surface 13U has a pair of first edge portions 21U, one first auxiliary edge portion 22U, one first accommodating portion 23U, and one first auxiliary accommodating portion 24U. The pair of first edge portions 21U, one first auxiliary edge portion 22U, and one first accommodating portion 23U are arranged on the first convex-side pressing portion 17U. Each first edge portion 21U is formed of a square edge extending linearly in the front-rear direction. The rear end of the first edge portion 21U is connected to the convex portion 19 of the first step portion 16U. The pair of first edge portions 21U are arranged with a gap in between in the circumferential direction of the electric wire 40 (the width direction of the first holding piece 12U). The first auxiliary edge portion 22U is formed of a square edge extending in the width direction and is arranged to connect the front ends of the pair of first edge portions 21U.

[0022] The first accommodating portion 23U is a rectangular portion defined by a pair of first edge portions 21U and a first auxiliary edge portion 22U, and is formed by recessing a portion of the first opposing surface 13U (first convex side pressing portion 17U) more shallowly than the other portions. The rear end of the first accommodating portion 23U opens rearward at the convex portion 19 of the first step portion 16U. The first auxiliary accommodating portion 24U is disposed in the first concave side pressing portion 18U. The first auxiliary accommodating portion 24U is a rectangular portion formed by recessing a region of the first outer plate portion 14U rearward of the first step portion 16U more shallowly than the other regions.

[0023] The second holding piece 12L has a second outer plate portion 14L and a second inner plate portion 15L overlapping the inner surface (upper surface) of the second outer plate portion 14L. The second outer plate portion 14L is a portion formed over the entire length of the second holding piece 12L. The second inner plate portion 15L is formed only on the rear end portion of the second holding piece 12L. The second inner plate portion 15L is located rearward of the rear end of the first inner plate portion 15U and the rear end of the first step portion 16U. The front end portion of the second inner plate portion 15L forms a second step portion 16L. The second opposing surface 13L has a second step portion 16L, a second convex side pressing portion 17L, a second concave side pressing portion 18L, and a second auxiliary accommodating portion 24L. The second step portion 16L is located rearward of the first step portion 16U and forward of the first auxiliary accommodating portion 24U.

[0024] The second convex side pressing portion 17L is located rearward of the second step portion 16L and is connected to a convex portion 19 (corner portion) of the second step portion 16L. The second convex side pressing portion 17L is formed by the second inner plate portion 15L. The second concave side pressing portion 18L is located forward of the second step portion 16L and is connected to a concave portion 20 (corner portion) of the second step portion 16L. The second concave side pressing portion 18L is formed by the first outer plate portion 14U. The second convex side pressing portion 17L is located at a position higher than the second concave side pressing portion 18L (a position closer to the first opposing surface 13U).

[0025] The second opposing surface 13L has a pair of second edge portions 21L, one second auxiliary edge portion 22L, one second accommodating portion 23L, and one second auxiliary accommodating portion 24L. The pair of second edge portions 21L, one second auxiliary edge portion 22L, and one second accommodating portion 23L are arranged on the second convex-side pressing portion 17L. Each second edge portion 21L is formed of a square edge extending linearly in the front-rear direction. The front ends of the second edge portions 21L are connected to the convex portion 19 of the second step portion 16L. The pair of second edge portions 21L are arranged with a gap in between in the circumferential direction of the electric wire 40 (the width direction of the first holding piece 12U). The second auxiliary edge portion 22L is formed of a square edge extending in the width direction and is arranged to connect the rear ends of the pair of second edge portions 21L. The second edge portion 21L and the second auxiliary edge portion 22L are located rearward of the first edge portion 21U and the first auxiliary edge portion 22U, and are located forward of the first auxiliary accommodating portion 24U.

[0026] The second accommodating portion 23L is a rectangular portion defined by a pair of second edge portions 21L and second auxiliary edge portions 22L, and is formed by partially recessing the second opposing surface 13L (second convex-side pressing portion 17L) more shallowly than the other portions. The front end of the second accommodating portion 23L opens forward at the convex portion 19 of the second step portion 16L. The second accommodating portion 23L is located rearward of the first accommodating portion 23U. The second auxiliary accommodating portion 24L is disposed in the second concave-side pressing portion 18L. The second auxiliary accommodating portion 24L is a rectangular portion formed by recessing a region of the second outer plate portion 14L rearward of the second step portion 16L more shallowly than the other regions. The front end portion of the first auxiliary accommodating portion 24U and the rear end portion of the second auxiliary accommodating portion 24L are disposed in the same region in the front-rear direction (the axial direction of the electric wire 40).

[0027] The slide member 30 is a single component made by bending a metal plate of a predetermined shape. The slide member 30 has an elongated rectangular cylindrical shape extending in the front-to-rear direction as a whole. A pair of upper and lower clamping sections 31 are formed inside the slide member 30. A pair of upper and lower guide sections 32 are formed at the front ends of both clamping sections 31, and are inclined so that the distance between them in the up-down direction gradually increases toward the front.

[0028] When connecting the terminal fitting A and the electric wire 40 in the first embodiment, first, the coating 42 at the front end of the electric wire 40 is removed to expose the core wire 41. The exposed front end of the core wire 41 is inserted between the first holding piece 12U and the second holding piece 12L from the rear of the terminal fitting A. When the core wire 41 is inserted between the holding pieces 12L, 12U, the minimum opposing distance in the vertical direction between the first holding piece 12U and the second holding piece 12L is greater than the outer diameter of the core wire 41. Thereafter, the slide member 30 is assembled to the terminal body 10 from the rear. During the assembly process, the guide portions 32 of the upper and lower clamping portions 31 abut against the rear ends of the first holding piece 12U and the second holding piece 12L, and the inclination of the guide portions 32 deforms the first holding piece 12U and the second holding piece 12L so that they approach each other.

[0029] When the assembly of the slide member 30 to the terminal body 10 is completed, the core wire 41 is sandwiched between the first holding piece 12U and the second holding piece 12L, as shown in FIGS. 2 to 4. Because the first opposing surface 13U of the first holding piece 12U and the second opposing surface 13L of the second holding piece 12L form a step, the core wire 41 is sandwiched in a bent, stepped state. More specifically, the first convex pressing portion 17U presses the upper surface of the core wire 41, and this pressing action brings the lower surface of the core wire 41 into close contact with the second concave pressing portion 18L. The second convex pressing portion 17L presses the lower surface of the core wire 41, and this pressing action brings the upper surface of the core wire 41 into close contact with the first concave pressing portion 18U.

[0030] When the core wire 41 is clamped, part of the upper surface of the core wire 41 is pressed into the first accommodating portion 23U and the first auxiliary accommodating portion 24U, and the first edge portion 21U and the first auxiliary edge portion 22U bite into the upper surface of the core wire 41. Part of the lower surface of the core wire 41 is pressed into the second accommodating portion 23L and the second auxiliary accommodating portion 24L, and the second edge portion 21L and the second auxiliary edge portion 22L bite into the lower surface of the core wire 41.

[0031] The engagement of the first edge portion 21U and the second edge portion 21L with the core wire 41 prevents the core wire 41 from being displaced circumferentially (relative rotation) and in the width direction (left and right) relative to the terminal body 10. Furthermore, the engagement of the first auxiliary edge portion 22U and the second auxiliary edge portion 22L with the core wire 41 prevents the core wire 41 from being displaced axially (rearward) relative to the terminal body 10. Therefore, the electric wire 40 (core wire 41) is held in a connected state with the terminal fitting A (terminal body 10 and slide member 30).

[0032] The terminal fitting A of the first embodiment includes a terminal body 10 and a slide member 30. The terminal body 10 has a pair of holding pieces (a first holding piece 12U and a second holding piece 12L) arranged to sandwich the core wire 41 of the electric wire 40. The slide member 30 is attached to the terminal body 10, thereby displacing the first holding piece 12U and the second holding piece 12L so as to approach each other. The first holding piece 12U is formed with a pair of first edge portions 21U and a first accommodating portion 23U. The first edge portion 21U extends in a direction (axial direction) intersecting the circumferential direction of the core wire 41 and is capable of biting into the core wire 41. The first accommodating portion 23U is circumferentially defined by the pair of first edge portions 21U and is capable of accommodating a portion of the core wire 41. The second holding piece 12L is formed with a pair of second edge portions 21L and a second accommodating portion 23L. The second edge portions 21L have a shape extending in a direction (axial direction) intersecting the circumferential direction of the core wire 41, and can bite into the core wire 41. The second accommodating portion 23L is defined in the circumferential direction by the pair of second edge portions 21L, and can accommodate a part of the core wire 41.

[0033] Because the copper or copper alloy that forms the first holding piece 12U and the second holding piece 12L and the aluminum or aluminum alloy that forms the core wire 41 have different linear expansion coefficients, there is a concern that the contact pressure of the terminal body 10 (first holding piece 12U and second holding piece 12L) with respect to the core wire 41 may fluctuate when the ambient temperature fluctuates significantly. However, because the first edge portion 21U, the second edge portion 21L, the first auxiliary edge portion 22U, and the second auxiliary edge portion 22L are embedded in the core wire 41, the contact pressure between the core wire 41 and the terminal body 10 (first holding piece 12U and second holding piece 12L) remains stable even when the ambient temperature fluctuates significantly.

[0034] Furthermore, if the core wire 41 softens in a high-temperature environment, there is concern that the contact pressure between the terminal body 10 (first holding piece 12U and second holding piece 12L) and the core wire 41 may fluctuate. However, even in a softened state, the core wire 41 remains housed in the first accommodating portion 23U, the second accommodating portion 23L, the first auxiliary accommodating portion 24U, and the second auxiliary accommodating portion 24L, so the contact pressure between the core wire 41 and the terminal body 10 (first holding piece 12U and second holding piece 12L) remains stable.

[0035] The first opposing surface 13U, which is the surface of the first holding piece 12U facing the core wire 41, has a first step portion 16U, a first convex-side pressing portion 17U continuing to the convex portion 19 of the first step portion 16U, and a first concave-side pressing portion 18U continuing to the concave portion 20 of the first step portion 16U. The first step portion 16U is a portion that divides the first opposing surface 13U into two regions that are located at different radial (up-down) positions in the axial direction of the core wire 41. The first edge portion 21U and the first accommodating portion 23U are arranged in the first convex-side pressing portion 17U. According to this configuration, the first edge portion 21U and the first accommodating portion 23U are formed in the first convex side pressing portion 17U, which is connected to the convex side of the first step portion 16U, of the first convex side pressing portion 17U and the first concave side pressing portion 18U, so that the first edge portion 21U can be deeply inserted into the core wire 41 and the core wire 41 can be deeply accommodated in the first accommodating portion 23U.

[0036] The second opposing surface 13L, which is the surface of the second holding piece 12L facing the core wire 41, has a second step portion 16L, a second convex-side pressing portion 17L continuing to the convex portion 19 of the second step portion 16L, and a second concave-side pressing portion 18L continuing to the concave portion 20 of the second step portion 16L. The second step portion 16L is a portion that divides the second opposing surface 13L into two regions at different radial (up-down) positions in the axial direction of the core wire 41. The second edge portion 21L and the second accommodating portion 23L are arranged in the second convex-side pressing portion 17L. According to this configuration, the second edge portion 21L and the second accommodating portion 23L are formed in the second convex side pressing portion 17L, which is connected to the convex side of the second step portion 16L, of the second convex side pressing portion 17L and the second concave side pressing portion 18L, so that the second edge portion 21L can be deeply inserted into the core wire 41 and the core wire 41 can be deeply accommodated in the second accommodating portion 23L.

[0037] The protrusion 19 of the first step portion 16U is a portion that strongly presses the core wire 41 when the core wire 41 is clamped between the first holding piece 12U and the second holding piece 12L. The first edge portion 21U and the first accommodating portion 23U are arranged to face the corner edge of the protrusion 19 of the first step portion 16U, so that the first edge portion 21U can be caused to bite more deeply into the core wire 41 and the core wire 41 can be accommodated more deeply in the first accommodating portion 23U.

[0038] The protrusion 19 of the second step 16L is a portion that strongly presses the core wire 41 when the core wire 41 is clamped between the first holding piece 12U and the second holding piece 12L. The second edge 21L and the second accommodating portion 23L are arranged to face the corner edge of the protrusion 19 of the second step 16L, so that the second edge 21L can be caused to bite more deeply into the core wire 41 and the core wire 41 can be accommodated more deeply in the second accommodating portion 23L.

[0039] The terminal body 10 has a first step portion 16U formed on the first holding piece 12U and a second step portion 16L formed on the second holding piece 12L. The first step portion 16U and the second step portion 16L are disposed at different positions in the axial direction (front-rear direction) of the core wire 41. The first step portion 16U and the second step portion 16L are formed in a direction that bends the core wire 41 along the step shapes of the first step portion 16U and the second step portion 16L. With this configuration, the step shapes of the first step portion 16U and the second step portion 16L can further stabilize the contact pressure between the first holding piece 12U and the second holding piece 12L and the core wire 41.

[0040] The pair of first edge portions 21U are arranged at an interval in the circumferential direction (width direction) of the core wire 41. The first holding piece 12U is formed with a first auxiliary edge portion 22U that extends in the circumferential direction to connect the front ends of the pair of first edge portions 21U and defines the first housing portion 23U. With this configuration, the first auxiliary edge portion 22U bites into the core wire 41, thereby restricting relative axial movement of the core wire 41 with respect to the first holding piece 12U.

[0041] The pair of second edge portions 21L are arranged at an interval in the circumferential direction (width direction) of the core wire 41. The second holding piece 12L is formed with a second auxiliary edge portion 22L that extends in the circumferential direction to connect the rear ends of the pair of second edge portions 21L and defines the second accommodating portion 23L. With this configuration, the second auxiliary edge portion 22L bites into the core wire 41, thereby restricting relative axial movement of the core wire 41 with respect to the second holding piece 12L.

[0042] [Other Examples] The present invention is not limited to the examples described above and illustrated in the drawings, but is defined by the claims. The present invention includes the equivalent meaning of the claims and all modifications within the scope of the claims, including the following embodiments. The edge portion and the housing portion may be formed on only one of the pair of holding pieces. The edge portion and the accommodation portion may be disposed only in the concave-side pressing portion, which is connected to the recess of the step portion, of the two pressing portions, or may be disposed in both the convex-side pressing portion and the concave-side pressing portion. The holding piece may have a shape without a step portion. The edge portion and the receiving portion may be disposed in an area spaced apart from the corner edge of the convex portion. The auxiliary edge portion may not be provided. The shape of the storage section is not limited to a rectangle, but may be a trapezoid or a shape including a curve. [Explanation of symbols]

[0043] A...Terminal fitting 10...Terminal body 11...Square tube part 12L…Second holding piece 12U…1st holding piece 13L…Second opposing surface 13U…1st opposing surface 14L…Second outer panel part 14U…1st outer panel part 15L…Second inner plate part 15U…1st inner plate part 16L...Second step 16U...First step 17L...Second convex pressing part 17U...First convex side pressing part 18L...Second concave pressing part 18U...First concave pressing part 19...Convex part 20...recess 21L...Second edge 21U...First edge section 22L...Second auxiliary edge 22U...First auxiliary edge 23L...Second storage area 23U…First storage area 24L...Second auxiliary storage section 24U...First auxiliary storage area 30...Slide member 31... Clamping part 32...Guide section 40...Electric wire 41...Core wire 42...Sheathing

Claims

1. a terminal body having a pair of holding pieces arranged to sandwich a core wire of the electric wire; a slide member attached to the terminal body to displace the pair of holding pieces so as to approach each other, At least one of the pair of holding pieces has: an edge portion extending in a direction intersecting a circumferential direction of the core wire and capable of biting into the core wire; The terminal fitting has an accommodating portion that is circumferentially partitioned by the edge portion and is capable of accommodating a portion of the core wire.

2. The surface of the holding piece facing the core wire is a step portion that divides the opposing surface into two regions that are located at different radial positions in the axial direction of the core wire; a convex-side pressing portion connected to the convex portion of the step portion; a recessed-side pressing portion connected to the recessed portion of the step portion, 2. The terminal fitting according to claim 1, wherein the edge portion and the accommodating portion are disposed on the convex pressing portion.

3. 3. The terminal fitting according to claim 2, wherein the edge portion and the accommodating portion are disposed so as to face a corner edge of the protruding portion.

4. The step portion is a first step portion formed on one of the pair of holding pieces; a second step portion formed on the other holding piece, 4. The terminal fitting according to claim 3, wherein the first step portion and the second step portion are arranged at different positions in the axial direction of the core wire and are formed in a direction that bends the core wire along the step shapes of the first step portion and the second step portion.

5. A pair of the edge portions are arranged at an interval in the circumferential direction, The terminal fitting according to claim 1 , wherein the holding piece is formed with an auxiliary edge portion that extends in the circumferential direction so as to connect the pair of edge portions and that defines the accommodating portion.

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