Female terminal fitting

Abstract

According to one embodiment of the present disclosure, a female terminal fitting capable of reducing the number of components is provided. The female terminal fitting (11) is mounted in the cavity (12), and the male terminal fitting (13) is inserted along the first axis (X1). A female terminal fitting (11), which is an integrally molded article made of metal, is provided with: a crimp section (22) that is provided at a base end section in the direction along a first axis (X1) and to which a core wire (31a) of an electric wire (31) can be crimped; an elastic contact piece (25) having elasticity in a direction intersecting the first axis (X1) so as to press and contact the periphery of the male terminal fitting (13) in a state in which the female terminal fitting (11) has been inserted; and a lance section (26) that extends along the first axis (X1) by expanding outward in a direction intersecting the first axis (X1), and that engages with the engagement section (15) of the cavity (12) to prevent the female terminal fitting (11) from coming out of the cavity (12).

Description

Technical Field

[0001] The present disclosure relates to a female terminal part. Background Art

[0002] Conventionally, as a female terminal part, a structure including a crimping part, an elastic contact piece, and a lance part has been known (for example, refer to Patent Document 1). The crimping part is configured to be able to be riveted and connected to the core wire of the electric wire. The elastic contact piece has elasticity in a direction crossing the first axis along the direction in which the male terminal part is inserted, so as to push and contact the periphery of the male terminal part in the inserted state. The lance part is configured to be engaged with the engaging part of the cavity by expanding outward in a direction crossing the first axis and extending along the first axis. The female terminal part can be prevented from coming out of the cavity by the lance part. Prior Art Documents Patent Documents

[0003] Patent Document 1: Japanese Unexamined Patent Application Publication No. 10-40989 Summary of the Invention Problems to be Solved by the Invention

[0004] However, the above-described female terminal part has the following problem. Since it is formed by assembling a first component having a crimping part and an elastic contact piece and a first component having a lance part, the number of components is large. This leads to complication of the structure of the female terminal part and causes an increase in the assembly man-hours.

[0005] An object of the present disclosure is to provide a female terminal part capable of reducing the number of components. Solutions to the Problems

[0006] The female terminal part of the present disclosure is installed in a cavity and is for a male terminal part to be inserted along the first axis. The female terminal part is an integrally formed product made of metal and includes: a crimping part provided at a base end part in the direction along the first axis, and the core wire of the electric wire can be riveted and connected to the crimping part; an elastic contact piece having elasticity in a direction crossing the first axis to push and contact the periphery of the male terminal part in the state where the male terminal part is inserted into the female terminal part; and a lance part that is engaged with the engaging part of the cavity by expanding outward in a direction crossing the first axis and extending along the first axis, thereby preventing the female terminal part from coming out of the cavity. Advantages of the Invention

[0007] According to the female terminal part of the present disclosure, the number of components can be reduced. Brief Description of the Drawings

[0008] Figure 1 It is a top view of the female terminal part in one embodiment. Figure 2It is a perspective view of a female terminal part in an embodiment. Figure 3 It is a side view of a female terminal part in an embodiment. Figure 4 It is a front view of a female terminal part in an embodiment. Detailed Embodiments

[0009] [Description of Embodiments of the Present Disclosure] First, embodiments of the present disclosure will be described by way of example. The female terminal part of the present disclosure [1] is installed in a cavity for a male terminal part to be inserted along a first axis. The female terminal part is an integrally formed product made of metal and includes: a crimping portion provided at a base end portion in the direction of the first axis, and a core wire of a wire can be riveted to the crimping portion; an elastic contact piece having elasticity in a direction intersecting the first axis to push and contact the periphery of the male terminal part in a state where the male terminal part has been inserted into the female terminal part; and a spear-shaped portion that is engaged with an engaging portion of the cavity by expanding outward in a direction intersecting the first axis and extending along the first axis, thereby preventing the female terminal part from being removed from the cavity.

[0010] According to this structure, since the female terminal part having the crimping portion, the elastic contact piece, and the spear-shaped portion is an integrally formed product, for example, compared with a female terminal part assembled from a component having a crimping portion and an elastic contact piece and a component having a spear-shaped portion, the number of components can be reduced. Therefore, for example, the structure can be simplified and the assembly man-hours can be reduced.

[0011] [2] In the above [1], it is also possible that at least a part of the spear-shaped portion is arranged in parallel with the elastic contact piece in the direction of the first axis. According to this structure, since at least a part of the spear-shaped portion is arranged in parallel with the elastic contact piece in the direction of the first axis (in other words, at a position overlapping the elastic contact piece in the circumferential direction of the female terminal part), for example, compared with the case where they are not arranged in parallel, it can contribute to shortening the length of the female terminal part.

[0012] [3] In the above [2], it is also possible that the entire spear-shaped portion is arranged in parallel with the elastic contact piece in the direction of the first axis. According to this structure, since the entire spear-shaped portion is arranged in parallel with the elastic contact piece in the direction of the first axis, it can contribute to further shortening the length of the female terminal part.

[0013] [4]In the above [3], it may also be configured with: a distal-end-side cylindrical portion disposed on the distal-end side of the female terminal part in the direction along the first axis; and a proximal-end-side cylindrical portion disposed between the distal-end-side cylindrical portion and the crimping portion. The elastic contact piece is disposed in such a manner as to connect the distal-end-side cylindrical portion and the proximal-end-side cylindrical portion. The lance-shaped portion extends outward in a direction intersecting the first axis from a portion of the distal-end-side cylindrical portion where the elastic contact piece is not provided in the circumferential direction, and extends toward the rear end side of the female terminal part in the direction along the first axis.

[0014] According to this structure, since the lance-shaped portion extends from a portion of the distal-end-side cylindrical portion where the elastic contact piece is not provided in the circumferential direction, it is possible to integrally form the female terminal part and, at the same time, arrange the entire lance-shaped portion side by side with the elastic contact piece in the direction along the first axis.

[0015] [5]In the above [4], it may also be that the distal-end-side cylindrical portion and the proximal-end-side cylindrical portion are formed by bending a metal plate into a ring shape and have a connecting portion where the ends of the metal plate are connected to each other. The elastic contact piece and the lance-shaped portion are disposed at a portion of the distal-end-side cylindrical portion where the connecting portion is not arranged in the circumferential direction.

[0016] According to this structure, since the distal-end-side cylindrical portion and the proximal-end-side cylindrical portion are formed by bending a metal plate into a ring shape and have a structure with a connecting portion where the ends of the metal plate are connected to each other, it is possible to easily manufacture the female terminal part. In addition, since the elastic contact piece and the lance-shaped portion are disposed at a portion of the distal-end-side cylindrical portion where the connecting portion is not arranged in the circumferential direction, the elastic contact piece and the lance-shaped portion can be easily arranged without being affected by the connecting portion.

[0017] [6]In the above [4] or the above [5], it may also be that the elastic contact piece is one of a plurality of elastic contact pieces arranged in the circumferential direction of the distal-end-side cylindrical portion, and the lance-shaped portion is disposed between the plurality of elastic contact pieces.

[0018] According to this structure, since a plurality of elastic contact pieces are arranged in the circumferential direction of the distal-end-side cylindrical portion and the lance-shaped portion is disposed between the plurality of elastic contact pieces, it is possible to stably hold the posture of the female terminal part in the cavity, for example.

[0019] [7]In the above [6], it may also be that the lance-shaped portion is one of a plurality of lance-shaped portions arranged in the circumferential direction of the distal-end-side cylindrical portion, and the plurality of lance-shaped portions are arranged at equal intervals in the circumferential direction of the distal-end-side cylindrical portion. According to this structure, since a plurality of lance-shaped portions are arranged in the circumferential direction of the distal-end-side cylindrical portion and are arranged at equal intervals in the circumferential direction of the distal-end-side cylindrical portion, it is possible to stably hold the posture of the female terminal part in the cavity, for example.

[0020] [8]In the above [7], it is also possible that the lance-shaped portions are provided at 180° intervals in the circumferential direction of the distal-side cylindrical portion, the elastic contact pieces are provided in the circumferential direction of the distal-side cylindrical portion between the lance-shaped portions, and when viewed in the direction along the first axis, one of a plurality of elastic contact pieces is arranged at a position line-symmetric with respect to the straight line passing through the lance-shaped portions.

[0021] According to this structure, since the lance-shaped portions are provided at 180° intervals in the circumferential direction of the distal-side cylindrical portion, the posture of the female terminal part in the cavity can be stably maintained. In addition, since a plurality of elastic contact pieces are provided between the lance-shaped portions in the circumferential direction of the distal-side cylindrical portion, and when viewed in the direction along the first axis, they are arranged at positions line-symmetric with respect to the straight line passing through the lance-shaped portions, they can be well connected to the male terminal part. That is, since the elastic contact pieces are arranged in a plurality and sandwich the male terminal part from line-symmetric positions, they can be well connected to the male terminal part.

[0022] [9]In any one of the above [4] to the above [8], it is also possible that at least one of the distal-side cylindrical portion and the proximal-side cylindrical portion has a protrusion, and the protrusion can be engaged with the circumferential engaging portion of the cavity by protruding outward in a direction intersecting the first axis.

[0023] According to this structure, since at least one of the distal-side cylindrical portion and the proximal-side cylindrical portion has a protrusion protruding outward in a direction intersecting the first axis, for example, incorrect assembly can be prevented when the female terminal part is assembled into the cavity. In addition, for example, in a state where the female terminal part has been assembled into the cavity, rotation of the female terminal part relative to the cavity can be prevented.

[0024] [Details of the embodiments of the present disclosure] Hereinafter, a specific example of the female terminal part 11 of the present disclosure will be described with reference to the drawings. For ease of explanation, in each drawing, a part of the structure may be exaggerated or simplified. In addition, the dimensional ratios of the respective parts may be different in each drawing. In this specification, "parallel", "orthogonal", or "true circle" includes not only strictly parallel, orthogonal, or true circle, but also cases of substantially parallel, orthogonal, or true circle within the range where the effects of the present embodiment are achieved. Further, the present invention is not limited to these examples, but is shown by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0025] (Structure of the female terminal part 11) As Figure 1As shown, the female terminal part 11 is installed in the cavity 12 for the male terminal part 13 to be inserted along the first axis X1. The cavity 12 is made of resin. The cavity 12 has a receiving part 14 for receiving the female terminal part 11. The receiving part 14 has a engaging part 15 protruding inward. The male terminal part 13 is formed in a cylindrical shape.

[0026] As Figures 1 to 3 shown, the female terminal part 11 is an integrally formed product made of metal. The female terminal part 11 is composed of a metal plate 21. The female terminal part 11 includes a crimping part 22, a distal end side cylindrical part 23, a proximal end side cylindrical part 24, a plurality of elastic contact pieces 25, a lance-shaped part 26, and a guiding protrusion 27a and a rotation preventing protrusion 27b as protrusions.

[0027] (Structure of the crimping part 22) The crimping part 22 is provided at the proximal end part of the female terminal part 11 in the direction along the first axis X1, and is configured such that the core wire 31a of the electric wire 31 can be riveted and connected thereto. The crimping part 22 has an arc part 22a preformed in an arc shape, and extending parts 22b extending from both ends of the arc part 22a and bent to be able to clamp the core wire 31a together with the arc part 22a. Also, Figures 1 to 4 The extending part 22b in the state before being bent is shown in the figure.

[0028] (Structures of the distal end side cylindrical part 23 and the proximal end side cylindrical part 24) The distal end side cylindrical part 23 is provided at the distal end part in the direction along the first axis X1. In addition, the proximal end side cylindrical part 24 is provided between the distal end side cylindrical part 23 and the crimping part 22. In the present embodiment, when viewed in the direction along the first axis X1, the distal end side cylindrical part 23 is a true circular shape. In addition, in the present embodiment, when viewed in the direction along the first axis X1, the proximal end side cylindrical part 24 is a true circular shape. The distal end side cylindrical part 23 and the proximal end side cylindrical part 24 have the same diameter. The distal end side cylindrical part 23 and the proximal end side cylindrical part 24 are formed by bending a metal plate 21 into a ring shape, and have a connecting part 21a where the ends of the metal plate 21 are connected to each other. Also, as Figure 1 and Figure 2 shown, the connecting part 21a of the present embodiment has a locking convex part 21b and a locking concave part 21c, and the locking convex part 21b is embedded in the locking concave part 21c to prevent the ends of the metal plate 21 from separating from each other. A part of the circumferential direction of the proximal end side cylindrical part 24 and the arc part 22a of the crimping part 22 are connected by a connecting part 28.

[0029] (Structure of the elastic contact piece 25) The elastic contact piece 25 is arranged to connect the distal end side cylindrical portion 23 and the proximal end side cylindrical portion 24. The elastic contact piece 25 is an elongated strip-shaped piece, connecting a part of the circumferential direction of the distal end side cylindrical portion 23 and a part of the circumferential direction of the proximal end side cylindrical portion 24. The elastic contact piece 25 has elasticity in a direction intersecting the first axis X1 to press against and contact the periphery of the male terminal part 13 in the inserted state. Specifically, the elastic contact piece 25 has: a first inclined portion 25a extending from the distal end side cylindrical portion 23 toward the proximal end side cylindrical portion 24 and inclined and extending radially inward; and a second inclined portion 25b connected to the proximal end side cylindrical portion 24 from the first inclined portion 25a and inclined and extending radially outward. In addition, the elastic contact piece 25 has a contact portion 25c, and the contact portion 25c presses against and contacts the male terminal part 13 between the first inclined portion 25a and the second inclined portion 25b. A plurality of elastic contact pieces 25 are provided in the circumferential direction of the distal end side cylindrical portion 23 and the proximal end side cylindrical portion 24. In the present embodiment, six elastic contact pieces 25 are provided in the circumferential direction of the distal end side cylindrical portion 23 and the proximal end side cylindrical portion 24.

[0030] (Structure of the lance-shaped portion 26) As Figure 3 shown, the lance-shaped portion 26 extends from a portion of the circumferential direction of the distal end side cylindrical portion 23 where the elastic contact piece 25 is not provided. The lance-shaped portion 26 expands outward in a direction intersecting the first axis X1, and extends toward the proximal end side cylindrical portion 24, that is, extends toward the rear end side along the direction intersecting the first axis X1. The lance-shaped portion 26 is disposed in parallel with the elastic contact piece 25 as a whole in the direction along the first axis X1. In other words, in the direction along the first axis X1, the arrangement range of the lance-shaped portion 26 is located within the arrangement range of the elastic contact piece 25. In the direction along the first axis X1, the length of the lance-shaped portion 26 is set to exceed half of the length of the elastic contact piece 25.

[0031] As Figure 1 shown, the lance-shaped portion 26 is engaged with the engaging portion 15 of the cavity 12 to prevent the female terminal part 11 from being disengaged rearward from the cavity 12. The lance-shaped portion 26 is provided between a plurality of elastic contact pieces 25 in the circumferential direction of the distal end side cylindrical portion 23.

[0032] In addition, as Figure 4 shown, a plurality of lance-shaped portions 26 are provided in the circumferential direction of the distal end side cylindrical portion 23, and are provided at equal intervals in the circumferential direction of the distal end side cylindrical portion 23. In the present embodiment, the lance-shaped portions 26 are provided at intervals of 180° in the circumferential direction of the distal end side cylindrical portion 23.

[0033] In addition, a plurality of elastic contact pieces 25 are provided between the lance-shaped portions 26 in the circumferential direction of the distal end side cylindrical portion 23, and when viewed in the direction along the first axis X1, they are arranged at positions line-symmetric with respect to a straight line Y passing through the lance-shaped portions 26. Specifically, in the present embodiment, in the circumferential direction of the distal end side cylindrical portion 23, three elastic contact pieces 25 are provided at equal intervals between the lance-shaped portions 26 respectively.

[0034] In addition, the elastic contact pieces 25 and the lance-shaped portions 26 are provided at positions where the connecting portion 21a is not arranged in the circumferential direction of the distal end side cylindrical portion 23. In other words, the elastic contact pieces 25 and the lance-shaped portions 26 are provided while avoiding the portions where the connecting portion 21a is arranged in the circumferential direction of the distal end side cylindrical portion 23. In the present embodiment, the connecting portion 21a is arranged between the elastic contact pieces 25 in the circumferential direction of the distal end side cylindrical portion 23.

[0035] (Structure of the guiding projection 27a) As Figure 1 and Figure 2 shown, the guiding projection 27a is provided at a part of the circumferential direction of the distal end side cylindrical portion 23. The guiding projection 27a projects outward in a direction intersecting the first axis X1. The guiding projection 27a projects by cutting and raising a part of the distal end side cylindrical portion 23.

[0036] As Figure 1 and Figure 4 shown, a plurality of guiding projections 27a are provided in the circumferential direction of the distal end side cylindrical portion 23, and they are provided at equal intervals in the circumferential direction of the distal end side cylindrical portion 23. In the present embodiment, the guiding projections 27a are provided at 180° intervals in the circumferential direction of the distal end side cylindrical portion 23.

[0037] As Figure 4 shown, when assembling the female terminal part 11 into the cavity 12, the guiding projection 27a prevents the incorrect assembly of the female terminal part 11 relative to the cavity 12 by engaging with the circumferential engaging portion 16 provided on the cavity 12. That is, when inserting the female terminal part 11 into the cavity 12, the guiding projection 27a is guided to the circumferential engaging portion 16, preventing the female terminal part 11 from being inserted into the cavity 12 at the wrong angle in the circumferential direction.

[0038] (Structure of the anti-rotation projection 27b) As Figure 1 and Figure 2 shown, the anti-rotation projection 27b is provided at a part of the circumferential direction of the proximal end side cylindrical portion 24. The anti-rotation projection 27b projects outward in a direction intersecting the first axis X1. The anti-rotation projection 27b projects by cutting and raising a part of the proximal end side cylindrical portion 24.

[0039] As Figure 1As shown, a plurality of rotation prevention protrusions 27b are provided in the circumferential direction of the proximal end side cylindrical portion 24, and are provided at equal intervals in the circumferential direction of the proximal end side cylindrical portion 24. In the present embodiment, the rotation prevention protrusions 27b are provided at intervals of 180° in the circumferential direction of the proximal end side cylindrical portion 24.

[0040] In a state where the female terminal part 11 is assembled to the cavity 12, the rotation prevention protrusions 27b engage with the circumferential engaging portion 16 provided in the cavity 12, preventing the female terminal part 11 from rotating relative to the cavity 12 about the first axis X1.

[0041] Next, the operation of the female terminal part 11 configured as described above will be described. The female terminal part 11 is installed in the cavity 12 by being inserted into the accommodating portion 14 of the cavity 12 from the end side along the first axis X1. On the way of inserting the female terminal part 11, the lance-shaped portion 26 elastically deforms radially inward of the distal end side cylindrical portion 23, and expands radially outward of the distal end side cylindrical portion 23 at a position corresponding to the engaging portion 15 and is disposed at a position where it can engage with the engaging portion 15. Thereby, the female terminal part 11 can be prevented from coming out of the cavity 12.

[0042] Next, when the male terminal part 13 is inserted into the female terminal part 11 along the first axis X1, the elastic contact piece 25 elastically deforms radially outward, and the contact portion 25c presses against and contacts the periphery of the male terminal part 13. Thereby, the male terminal part 13 and the female terminal part 11 can be well electrically connected.

[0043] Next, the effects of the above-described embodiment will be described. (1) Since the female terminal part 11 having the crimping portion 22, the elastic contact piece 25, and the lance-shaped portion 26 is an integrally formed product, for example, compared with a female terminal part assembled from a component having a crimping portion and an elastic contact piece and a component having a lance-shaped portion, the number of components can be reduced. Therefore, for example, the structure can be simplified and the assembly man-hours can be reduced.

[0044] (2) Since the lance-shaped portion 26 is disposed such that the whole is juxtaposed with the elastic contact piece 25 in the direction along the first axis X1 (in other words, at a position overlapping the elastic contact piece 25 in the circumferential direction of the female terminal part 11), for example, compared with a case where they are not juxtaposed, it is possible to contribute to shortening the length of the female terminal part 11.

[0045] (3) Since the lance-shaped portion 26 extends from a portion where the elastic contact piece 25 is not provided in the circumferential direction of the distal end side cylindrical portion 23. Therefore, while the female terminal part 11 is an integrally formed product, the whole lance-shaped portion 26 can be juxtaposed with the elastic contact piece 25 in the direction along the first axis X1.

[0046] (4) Since the distal end side cylindrical portion 23 and the proximal end side cylindrical portion 24 are formed by bending a metal sheet 21 into a ring shape and have a structure in which the end portions of the metal sheet 21 are connected to each other by a connecting portion 21a, the female terminal part 11 can be easily manufactured. In addition, since the elastic contact piece 25 and the lance portion 26 are provided at a position on the circumferential direction of the distal end side cylindrical portion 23 where the connecting portion 21a is not arranged, the elastic contact piece 25 and the lance portion 26 can be easily provided without being affected by the connecting portion 21a.

[0047] (5) Since a plurality of elastic contact pieces 25 are provided in the circumferential direction of the distal end side cylindrical portion 23 and the lance portion 26 is provided between the plurality of elastic contact pieces 25, for example, the male terminal part 13 can be well connected by the plurality of elastic contact pieces 25 in the circumferential direction. In addition, for example, the posture of the female terminal part 11 in the cavity 12 can be stably maintained.

[0048] (6) Since a plurality of lance portions 26 are provided in the circumferential direction of the distal end side cylindrical portion 23 and are provided at equal intervals in the circumferential direction of the distal end side cylindrical portion 23, for example, the posture of the female terminal part 11 in the cavity 12 can be stably maintained.

[0049] (7) Since the lance portions 26 are provided at 180° intervals in the circumferential direction of the distal end side cylindrical portion 23, the posture of the female terminal part 11 in the cavity 12 can be stably maintained. In addition, in the circumferential direction of the distal end side cylindrical portion 23, a plurality of elastic contact pieces 25 are provided between the lance portions 26 and are arranged at positions line-symmetric with respect to a straight line Y1 passing through the lance portions 26 when viewed in the direction along the first axis X1. Therefore, it can be well connected to the male terminal part 13. That is, since a plurality of elastic contact pieces 25 are arranged and the male terminal part 13 is clamped from line-symmetric positions, it can be well connected to the male terminal part 13.

[0050] (8) Since the distal end side cylindrical portion 23 has a guide protrusion 27a protruding outward in a direction crossing the first axis X1, for example, incorrect assembly can be prevented when the female terminal part 11 is assembled into the cavity 12. In addition, since the proximal end side cylindrical portion 24 has a rotation prevention protrusion 27b protruding outward in a direction crossing the first axis X1, for example, in a state where the female terminal part 11 is assembled into the cavity 12, the female terminal part 11 can be prevented from rotating with respect to the cavity 12.

[0051] The present embodiment can be implemented with the following modifications. The present embodiment and the following modification examples can be implemented in combination with each other within the range where they are not technically contradictory. · In the above-described embodiment, it has been described that the lance portion 26 is disposed in parallel with the elastic contact piece 25 as a whole in the direction along the first axis X1, but it is not limited thereto. For example, a part of the lance portion 26 may be disposed in parallel with the elastic contact piece 25 in the direction along the first axis X1. In other words, the lance portion 26 may be formed longer than the elastic contact piece 25 in the direction along the first axis X1. That is, a part of the lance portion 26 may be disposed at a position overlapping the elastic contact piece 25 in the circumferential direction of the female terminal part 11. Further, for example, the lance portion 26 may not be disposed in parallel with the elastic contact piece 25 in the direction along the first axis X1.

[0052] · In the above-described embodiment, it has been described that the female terminal part 11 includes the distal end side cylindrical portion 23 and the proximal end side cylindrical portion 24, but it is not limited thereto. For example, the distal end side cylindrical portion 23 or the proximal end side cylindrical portion 24 may also have a non-circular structure. That is, the distal end side cylindrical portion 23 or the proximal end side cylindrical portion 24 may also have a structure without the connecting portion 21a. Further, it has been described that the elastic contact piece 25 is provided in a structure connecting the distal end side cylindrical portion 23 and the proximal end side cylindrical portion 24, but as long as the elastic contact piece 25 has elasticity in the direction intersecting the first axis X1 to press and contact the periphery of the male terminal part 13 in the inserted state, it may be provided in other ways. In addition, it has been described that the lance portion 26 extends from the distal end side cylindrical portion, but as long as the lance portion 26 extends while expanding outward in the direction intersecting the first axis X1, it may be provided in other ways.

[0053] · In the above-described embodiment, it has been described that the distal end side cylindrical portion 23 and the proximal end side cylindrical portion 24 are formed by bending a metal plate material 21 into a circular shape, but it is not limited thereto. For example, the female terminal part 11 may also be manufactured from a metal pipe.

[0054] · In the above-described embodiment, it has been described that the elastic contact piece 25 and the lance portion 26 are provided at a position where the connecting portion 21a is not disposed in the circumferential direction of the distal end side cylindrical portion 23, but it is not limited thereto, and they may also be provided at a position where the connecting portion 21a is disposed.

[0055] · In the above-described embodiment, it has been described that a plurality of elastic contact pieces 25 are provided in the circumferential direction of the distal end side cylindrical portion 23, but it is not limited thereto. For example, only one elastic contact piece may be provided in the circumferential direction of the distal end side cylindrical portion 23. Further, in this case, for example, an elastic contact piece opposing portion that is not easily deflected may be provided at a position opposing one elastic contact piece, so that the male terminal part 13 in the inserted state is clamped by the elastic contact piece and the elastic contact piece opposing portion. In addition, in the above-described embodiment, it has been described that six elastic contact pieces 25 are provided, but it is not limited thereto. For example, two, three, eight, or other numbers may be provided.

[0056] ·In the above-described embodiment, it has been described that a plurality of lance portions 26 are provided in the circumferential direction of the distal end side cylinder portion 23, but it is not limited thereto. For example, only one lance portion may be provided in the circumferential direction of the distal end side cylinder portion 23. Further, in the above-described embodiment, it has been described that two lance portions 26 are provided, but it is not limited thereto. For example, three, four, or other numbers may be provided.

[0057] ·In the above-described embodiment, it has been described that the lance portions 26 are provided at equal intervals in the circumferential direction of the distal end side cylinder portion 23, but it is not limited thereto. For example, they may be provided at unequal intervals in the circumferential direction of the distal end side cylinder portion 23.

[0058] ·In the above-described embodiment, it has been described that when viewed in the direction along the first axis X1, the elastic contact piece 25 is arranged at a position line-symmetric with respect to the straight line Y1 passing through the lance portions 26, but it is not limited thereto, and it may also be arranged at a position other than line-symmetric with respect to the straight line Y1.

[0059] ·In the above-described embodiment, it has been described that the distal end side cylinder portion 23 has a guide protrusion 27a protruding outward in a direction intersecting the first axis X1, but it is not limited thereto, and it may not have the guide protrusion 27a. Further, in the above-described embodiment, it has been described that the proximal end side cylinder portion 24 has a rotation prevention protrusion 27b protruding outward in a direction intersecting the first axis X1, but it is not limited thereto, and it may not have the rotation prevention protrusion 27b. Additionally, it may be that only one of the distal end side cylinder portion 23 or the proximal end side cylinder portion 24 has at least one of the guide protrusion 27a or the rotation prevention protrusion 27b. For example, it may be that the distal end side cylinder portion 23 has a protrusion that functions both as the guide protrusion 27a and as the rotation prevention protrusion 27b.

[0060] ·In the above-described embodiment, it has been described that in the direction of the first axis X1, the length of the lance portion 26 is set to exceed half the length of the elastic contact piece 25, but it is not limited thereto. For example, its length may also be set to be less than or equal to half the length of the elastic contact piece 25.

[0061] ·In the above-described embodiment, it has been described that the crimping portion 22 has a structure that can only rivet and connect the core wire 31a of the electric wire 31, but it is not limited thereto. For example, it may also be a structure having a covering riveting portion that can rivet and fix the insulating covering portion of the electric wire 31.

[0062] ·In the above-described embodiment, it has been described that when viewed in the direction along the first axis X1, the distal end side cylinder portion 23 and the proximal end side cylinder portion 24 are true circular shapes, but it is not limited thereto. For example, when viewed in the direction along the first axis X1, they may also be quadrilateral shapes. Description of Reference Numerals

[0063] 11 Female terminal part 12 Cavity 13 Positive terminal part 14 Storage part 15 Engaging part 16 Circumferential engaging part 21 Metal sheet 21a Connecting part 21b Locking projection 21c Locking recess 22 Crimping part 22a Arc part 22b Extension part 23 Terminal side cylindrical part 24 Base end side cylindrical part 25 Elastic contact piece 25a First inclined part 25b Second inclined part 25c Contact part 26 Spear-shaped part 27a Guide projection (projection) 27b Anti-rotation projection (projection) 28 Connecting part 31 Electric wire 31a Core wire X1 First axis Y1 Straight line

Claims

1. A female terminal part is installed in a cavity for a male terminal part to be inserted along a first axis. The female terminal part is an integrally formed product made of metal and includes: A crimping part provided at a base end part in a direction along the first axis, and a core wire of a wire can be riveted and connected to the crimping part; An elastic contact piece having elasticity in a direction crossing the first axis to push and contact the periphery of the male terminal part in a state where the male terminal part has been inserted into the female terminal part; and A lance part that is expanded outward in a direction crossing the first axis and extends along the first axis, so as to be engaged with an engaging part of the cavity to prevent the female terminal part from being disengaged from the cavity.

2. The female terminal part according to claim 1, wherein At least a part of the lance part is arranged side by side with the elastic contact piece in a direction along the first axis.

3. The female terminal part according to claim 2, wherein The lance part is integrally arranged side by side with the elastic contact piece in a direction along the first axis.

4. The female terminal part according to claim 3, wherein It includes: a distal end side cylindrical part provided at the distal end side of the female terminal part in a direction along the first axis; and a proximal end side cylindrical part provided between the distal end side cylindrical part and the crimping part. The elastic contact piece is arranged in such a way as to connect the distal end side cylindrical part and the proximal end side cylindrical part. The lance part expands outward in a direction crossing the first axis from a part of the circumference of the distal end side cylindrical part where the elastic contact piece is not provided, and extends toward the rear end side of the female terminal part in a direction along the first axis.

5. The female terminal part according to claim 4, wherein The distal end side cylindrical part and the proximal end side cylindrical part are formed by bending a metal plate into a ring shape and have a connecting part where the ends of the metal plate are connected to each other. The elastic contact piece and the lance part are provided at a part of the circumference of the distal end side cylindrical part where the connecting part is not arranged.

6. The female terminal part according to claim 4 or 5, wherein The elastic contact piece is one of a plurality of elastic contact pieces provided on the circumference of the distal end side cylindrical part. The lance part is provided between the plurality of elastic contact pieces.

7. The female terminal part according to claim 6, wherein The lance part is one of a plurality of lance parts provided on the circumference of the distal end side cylindrical part, and the plurality of lance parts are arranged at equal intervals in the circumference of the distal end side cylindrical part.

8. The female terminal part according to claim 7, wherein The lance parts are arranged at intervals of 180° in the circumference of the distal end side cylindrical part. The elastic contact piece is provided between the lance parts in the circumference of the distal end side cylindrical part, and is one of a plurality of elastic contact pieces arranged at positions that are line-symmetric with respect to a straight line passing through the lance parts when viewed in a direction along the first axis.

9. The female terminal part according to any one of claims 4 to 8, wherein At least one of the distal-side cylindrical portion and the proximal-side cylindrical portion has a protrusion that can be engaged with the circumferential engaging portion of the cavity by protruding outward in a direction intersecting the first axis.

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