Female terminals, connectors, electric wires with terminals, electric wires with connectors, and wire harnesses

Abstract

To provide a female terminal, a connector, an electric wire with a terminal, an electric wire with a connector, and a wire harness capable of suppressing propagation of welding heat to a base point part of an arm spring in welding between a base part and a spring member.SOLUTION: A female terminal 10 has a terminal main body 13 consisting of a base part 20 connected with an electric wire 3 and a spring member 30 attached to the base part 20. The base part 20 has a pair of side walls 21 arranged at a predetermined interval into which a male terminal 5 can be inserted. The spring member 30 has: an extension plate (inner plate 31) provided at least along an inner lateral face 21a of the side wall 21; and an arm spring 35 extending from the extension plate (inner plate 31) toward the opposed side wall 21. The side walls 21 and an extension plate (collar plate 33) are welded to form a welding part Pw. A heat propagation suppression part 40 is provided on a heat propagation route T from the welding part Pw to a base point part Pb of the arm spring 35.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a female terminal for an electric circuit through which a large current flows, a connector, an electric wire with a terminal, an electric wire with a connector, and a wire harness. [Background technology]

[0002] Conventionally, electrical devices have been configured to configure an electrical circuit by connecting an electric device and a power supply device via a wire harness. The wire harness and the electric device, as well as the wire harness and the power supply device, are connected to each other via connectors attached to each of them.

[0003] For example, the connector shown in Patent Document 1 has a female terminal accommodated in a connector housing. When the connector housings are mated, a male terminal is inserted into the female terminal and they are electrically connected. Therefore, it is important to press the arm spring of the female terminal against the male terminal to ensure a reliable contact. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2009-245701 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the electric circuits of the drive system of an automobile, a large current flows, so it is considered to weld the base part and the spring member to ensure good conductivity. However, if the welding heat is transmitted to the base part of the arm spring when welding the base part and the spring member, the base part may soften and the pressing force of the arm spring may decrease, which may cause unstable contact with the male terminal. In other words, there is a risk of unstable conductivity.

[0006] An object of the present invention is to provide a female terminal, a connector, an electric wire with a terminal, an electric wire with a connector, and a wire harness that can prevent the welding heat generated when welding a base portion and a spring member from being transmitted to the base portion of the arm spring. [Means for solving the problem]

[0007] This invention is a female terminal characterized in that a terminal body is provided by a base portion connected to an electric wire and a spring member attached to the base portion, the base portion has a pair of side walls arranged at a predetermined distance apart so that a male terminal can be inserted, the spring member has a mounting plate provided along at least the inner surface of the side wall and an arm spring extending from the mounting plate toward the opposing side wall, the side wall and the mounting plate are welded to form a weld, and a heat transfer suppression portion is provided on the heat transfer path from the weld to the base portion of the arm spring. In the present invention, heat transfer refers not only to heat transfer between a plurality of members but also to heat transfer within a single member, i.e., it is a concept that includes thermal conduction.

[0008] The present invention also includes a connector having the aforementioned female terminal and a connector housing that accommodates the female terminal, as well as a terminal-attached electric wire having the aforementioned female terminal and the electric wire connected to the base portion of the female terminal.

[0009] Furthermore, the present invention includes an electric wire with a connector including the above-mentioned electric wire with terminal and a connector housing that accommodates the electric wire with terminal, as well as a wire harness including at least one of the above-mentioned electric wire with terminal and the above-mentioned electric wire with a connector.

[0010] According to this invention, it is possible to suppress the transmission of welding heat generated when welding the base portion and the spring member to the base portion of the arm spring. More specifically, in the female terminal etc. according to the present invention, a heat transfer suppressing portion is provided on the heat transfer path from the welded portion to the base point of the arm spring. Therefore, the welding heat generated when welding the side wall and the along plate is transferred to the along plate provided along the inner surface of the side wall, and the transfer to the base point at the boundary between the along plate and the arm spring can be suppressed. In other words, the welding heat generated when welding the base portion and the spring member can be suppressed from being transferred to the base point of the arm spring.

[0011] As an aspect of the present invention, the heat transfer suppressing portion may be a gap portion formed between the side wall and the longitudinal plate. In the present invention, the term "void portion" refers to a hollow portion filled with air, but is not limited to a sealed space.

[0012] This invention reduces the heat transfer rate of side walls, etc. Guidance Heat transfer rate of air compared to Guidance Since the rate of heat transfer is extremely low, it is possible to prevent the welding heat from being transferred across the gap to the plate provided along the inner surface of the side wall, and therefore to the base portion of the arm spring.

[0013] In another aspect of the present invention, a portion of the installation plate is installed along the tip surface of the side wall, the tip surface of the side wall and the installation plate are welded to form the welded portion, a chamfered portion is provided at a corner between the inner surface of the side wall and the tip surface, and the heat transfer suppression portion may be a gap portion formed between the chamfered portion and the installation plate. In addition, the chamfered portion in the present invention includes so-called C-chamfer and R-chamfer as well as all kinds of chamfer shapes and step shapes.

[0014] According to this invention, a gap portion serving as a heat transfer suppression portion is formed between the chamfered portion and the installation plate. More specifically, a gap portion serving as a heat transfer suppression portion is formed between the chamfered portion provided on the side wall, the installation plate provided along the inner surface of the side wall, and the installation plate similarly provided along the tip surface of the side wall. Therefore, it is possible to suppress the welding heat from being transferred beyond the gap portion to the installation plate provided along the inner surface of the side wall. In addition, it is possible to suppress the welding heat from being transferred to the base portion of the arm spring.

[0015] In another aspect of the present invention, the along-the-insulation plate arranged along the inner surface of the side wall has a bulge portion that bulges inward (toward the central axis of the base portion), and the heat transfer suppression portion may be a gap portion formed between the side wall and the bulge portion. In the present invention, the bulging portion refers to a portion of a longitudinal plate provided along the inner surface of a side wall, which forms a cavity between the longitudinal plate and the inner surface of the side wall.

[0016] According to this invention, a gap portion serving as a heat transfer suppression portion is formed between the side wall and the bulging portion. More specifically, a gap portion serving as a heat transfer suppression portion is formed between the inner surface of the side wall and the bulging portion of the installation plate provided along the inner surface of the side wall. Therefore, it is possible to suppress the welding heat from being transferred beyond the gap portion to the installation plate provided along the inner surface of the side wall. In turn, it is possible to suppress the welding heat from being transferred to the base portion of the arm spring.

[0017] As a further aspect of the present invention, the heat transfer suppressing portion may be a gap portion formed inside the side wall. In the present invention, the void portion also means a hollow portion filled with air, but is not limited to being a sealed space.

[0018] This invention improves the thermal conductivity of the sidewalls. Guidance Heat transfer rate of air compared to Guidance Since the rate of heat transfer is extremely low, it is possible to prevent the welding heat from passing through the gap and being transferred to the inside of the side wall, and further to the plate provided along the inner surface of the side wall, and thus to prevent the welding heat from being transferred to the base portion of the arm spring.

[0019] In another aspect of the present invention, a portion of the installation plate is installed along the tip surface of the side wall, the tip surface of the side wall and the installation plate are welded to form the welded portion, and a groove portion is provided on an inner surface of the side wall on the welded portion side of the base point portion, and the heat transfer suppression portion may be a gap portion formed inside the side wall by the groove portion.

[0020] According to this invention, the groove portion forms a gap portion, which is a heat transfer suppression portion, inside the side wall. More specifically, by providing a concave groove from the inner surface of the side wall toward the outer side, a gap portion, which is a heat transfer suppression portion, is formed inside the side wall. Therefore, it is possible to suppress the welding heat from being transferred to the inside of the side wall beyond the gap portion, and further, it is possible to suppress the welding heat from being transferred to the along plate provided along the inner surface of the side wall. In turn, it is possible to suppress the welding heat from being transferred to the base portion of the arm spring.

[0021] In another aspect of the present invention, a portion of the installation plate is installed along the tip surface of the side wall, the tip surface of the side wall and the installation plate are welded to form the welded portion, and a groove portion is provided on the tip surface of the side wall on the inner side of the welded portion (toward the central axis of the base portion), and the heat transfer suppression portion may be a gap portion formed inside the side wall by the groove portion.

[0022] According to this invention, the groove portion forms a gap portion, which is a heat transfer suppression portion, inside the side wall. More specifically, by providing a concave groove from the tip surface of the side wall toward the bottom wall side, a gap portion, which is a heat transfer suppression portion, is formed inside the side wall. Therefore, it is possible to suppress the welding heat from being transferred to the inside of the side wall beyond the gap portion, and further, it is possible to suppress the welding heat from being transferred to the installation plate provided along the inner surface of the side wall. In turn, it is possible to suppress the welding heat from being transferred to the base portion of the arm spring.

[0023] In another aspect of the present invention, a portion of the installation plate is installed along an outer surface of the side wall, the outer surface of the side wall and the installation plate are welded to form the weld, and a groove portion is provided on the inner surface of the side wall on the side of the weld closer to the base point, and the heat transfer suppression portion may be a gap portion formed inside the side wall by the groove portion.

[0024] According to this invention, the groove portion forms a gap portion, which is a heat transfer suppression portion, inside the side wall. More specifically, by providing a concave groove from the inner surface of the side wall toward the outer side, a gap portion, which is a heat transfer suppression portion, is formed inside the side wall. Therefore, it is possible to suppress the welding heat from being transferred to the inside of the side wall beyond the gap portion, and further, it is possible to suppress the welding heat from being transferred to the along plate provided along the inner surface of the side wall. In turn, it is possible to suppress the welding heat from being transferred to the base portion of the arm spring.

[0025] In another aspect of the present invention, a portion of the installation plate is installed along the outer surface of the side wall, the outer surface of the side wall and the installation plate are welded to form the welded portion, and a groove portion is provided on the tip surface of the side wall on the inner side of the welded portion (toward the central axis of the base portion), and the heat transfer suppression portion may be a gap portion formed inside the side wall by the groove portion.

[0026] According to this invention, the groove portion forms a gap portion, which is a heat transfer suppression portion, inside the side wall. More specifically, by providing a concave groove from the tip surface of the side wall toward the bottom wall side, a gap portion, which is a heat transfer suppression portion, is formed inside the side wall. Therefore, it is possible to suppress the welding heat from being transferred to the inside of the side wall beyond the gap portion, and further, it is possible to suppress the welding heat from being transferred to the installation plate provided along the inner surface of the side wall. In turn, it is possible to suppress the welding heat from being transferred to the base portion of the arm spring.

[0027] In another aspect of the present invention, the inner surface of the side wall and the installation plate are welded to form the weld, a groove portion is provided on the inner surface of the side wall on the weld side of the base point portion, and the heat transfer suppression portion may be a gap portion formed inside the side wall by the groove portion.

[0028] According to this invention, the groove portion forms a gap portion, which is a heat transfer suppression portion, inside the side wall. More specifically, by providing a concave groove from the inner surface of the side wall toward the outer side, a gap portion, which is a heat transfer suppression portion, is formed inside the side wall. Therefore, it is possible to suppress the welding heat from being transferred to the inside of the side wall beyond the gap portion, and further, it is possible to suppress the welding heat from being transferred to the along plate provided along the inner surface of the side wall. In turn, it is possible to suppress the welding heat from being transferred to the base portion of the arm spring.

[0029] As a further aspect of the present invention, a heat insulating member may be disposed in the gap. In the present invention, the heat insulating member is a member that is more heat conductive than the side wall. Guidance This refers to substances that have a low viscosity and are liquid or solid.

[0030] This invention improves the thermal conductivity of the sidewalls. Guidance The thermal conductivity of the heat shield is Guidance It has a low thermal conductivity and transfers heat by convection like air. Guidance Since the rate of heat transfer does not change, the welding heat can be reliably prevented from passing through the gap and being transferred to the side wall, and further, the welding heat can be reliably prevented from being transferred to the side plate provided along the inner surface of the side wall, and thus the welding heat can be reliably prevented from being transferred to the base portion of the arm spring.

[0031] In another aspect of the present invention, the heat transfer of the side wall is Guidance The rate of heat transfer of the above-mentioned plate Guidance It may be higher than the rate.

[0032] According to the present invention, it is possible to specify the heat transfer path from the welded portion to the base point of the arm spring, and effectively suppress the transfer of the welding heat to the base point of the arm spring. In other words, the heat transfer path from the welded portion to the base point of the arm spring can be considered to be a path that transfers inside the side wall, transfers to a lining plate provided along the inner surface of the side wall, and reaches the base point of the arm spring, and a path that transfers the welding heat along the lining plate and directly reaches the base point of the arm spring. Guidance The rate of heat transfer of the plate GuidanceTherefore, by providing a heat transfer suppressing portion on the heat transfer path, it is possible to effectively suppress the transfer of the welding heat to the base point of the arm spring. [Brief description of the drawings]

[0033] [Figure 1] FIG. [Diagram 2] FIG. [Diagram 3] FIG. [Figure 4] FIG. [Diagram 5] Front view of the female terminal. [Figure 6] FIG. [Figure 7] 7 is a cross-sectional view taken along the line AA in FIG. 6. [Figure 8] 7 is a cross-sectional view taken along line BB and line CC in FIG. 6. [Figure 9] FIG. [Figure 10] FIG. 4 is an enlarged cross-sectional view of a male terminal inserted inside a female terminal. [Figure 11] FIG. 11 is an enlarged cross-sectional view of a female terminal according to another embodiment. [Figure 12] FIG. 11 is an enlarged cross-sectional view of a female terminal according to another embodiment. [Figure 13] FIG. 11 is an enlarged cross-sectional view of a female terminal according to another embodiment. [Figure 14] FIG. 11 is an enlarged cross-sectional view of a female terminal according to another embodiment. [Figure 15] FIG. 11 is an enlarged cross-sectional view of a female terminal according to another embodiment. [Figure 16] FIG. 11 is an enlarged cross-sectional view of a female terminal according to another embodiment. [Figure 17] FIG. 11 is an enlarged cross-sectional view of a female terminal according to another embodiment. [Figure 18] FIG. 10 is a cross-sectional view corresponding to the cross-sectional view taken along the line DD in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0034] An embodiment of the present invention will now be described in detail with reference to the drawings. Fig. 1 is an overall perspective view showing a connector 1. In Fig. 1, a connector housing 4 that accommodates female terminals 10 is indicated by dashed lines.

[0035] Fig. 2 is an exploded perspective view of female terminal 10. Fig. 3 is a perspective view of female terminal 10. Fig. 4 is a side view of female terminal 10, Fig. 5 is a front view of female terminal 10, and Fig. 6 is a plan view of female terminal 10. Fig. 7 is a cross-sectional view taken along line AA in Fig. 6, and Fig. 8 is a cross-sectional view taken along line BB and line CC in Fig. 6. Fig. 9 is an enlarged cross-sectional view of female terminal 10, and Fig. 10 is an enlarged cross-sectional view of female terminal 10 with male terminal 5 inserted inside female terminal 10.

[0036] As shown in Fig. 1, the connector 1 is attached to the tip portion of electric wires 3 that constitute a wire harness 2. The connector 1 has two female terminals 10 accommodated in parallel in a connector housing 4.

[0037] The wire harness 2 is formed by bundling a plurality of electric wires 3. The electric wires 3 each have a core wire 3a, which is an electric conductor, covered with an insulating coating 3b, and the core wire 3a exposed at the tip portion is connected to a base portion 20 of a female terminal 10.

[0038] The connector housing 4 has an electric wire insertion portion 41 through which the electric wire 3 is inserted, and a terminal accommodating portion 42 that accommodates the female terminal 10. The accommodating space 4S that accommodates the female terminal 10 has a substantially rectangular opening, and a protruding portion of the connector housing that accommodates the male terminal 5 (see FIG. 10) is fitted into this opening. At that time, the male terminal 5 is inserted inside the female terminal 10, and the terminals are electrically connected to each other.

[0039] 2 to 10, the female terminal 10 is composed of an electric wire connection portion 11 and a terminal connection portion 12. The electric wire connection portion 11 and the terminal connection portion 12 are provided in series on an extension line of the electric wire 3. In the present application, this direction will be described as a longitudinal direction L. Also, a direction parallel to the direction in which the male terminal 5 (see FIG. 10) is inserted will be described as a height direction H, and a direction perpendicular to the longitudinal direction L and the height direction H will be described as a width direction W.

[0040] The electric wire connection portion 11 is provided with a connection plate 111 that is perpendicular to the width direction W. In addition, an upper end and a lower end of the connection plate 111 are bent to provide guide pieces 112. Each guide piece 112 has a role of suppressing the spread of the core wire 3a connected to the connection plate 111.

[0041] The terminal connection portion 12 is provided with a terminal body 13 that is electrically connected to a male terminal 5 (see FIG. 10). In the female terminal 10 according to this embodiment, the terminal body 13 is composed of a base portion 20 that is integrally formed with the electric wire connection portion 11, and a spring member 30 that is attached to the base portion 20. The base portion 20 and the spring member 30 will be described in detail below.

[0042] The base portion 20 has a pair of side walls 21 arranged at a predetermined interval so that the male terminal 5 can be inserted therein. More specifically, the base portion 20 has a pair of side walls 21 arranged at a predetermined interval and perpendicular to the width direction W. The base portion 20 also has a bottom wall 22 connecting lower ends of the side walls 21. Therefore, the base portion 20 is substantially U-shaped when viewed from the longitudinal direction L (see FIG. 4).

[0043] Moreover, one side wall 21 of the base portion 20 is formed by extending the connection plate 111 in the longitudinal direction L. The other side wall 21 is formed by folding back a plate material (the base material of the base portion 20) to the side where the guide piece 112 is formed. Therefore, the base portion 20 has a substantially rectangular shape when viewed from the height direction H (see FIG. 6). In this way, the base portion 20 realizes a compact female terminal 10 by forming the other side wall 21 on the side where the guide piece 112 is formed.

[0044] Furthermore, the upper guide piece 112 of the base part 20 is formed by bending the upper end part of the connecting plate 111, and a notch 11a is provided so that the side wall 21 does not warp when the guide piece 112 is formed. Similarly, the lower guide piece 112 of the base part 20 is formed by bending the lower end part of the connecting plate 111, and a notch 11b is provided so that the side wall 21 does not warp when the guide piece 112 is formed. Note that a part of the spring member 30 is exposed at the notch 11b, and it is possible to remove the spring member 30 by pushing it out from the lower side (see FIG. 5).

[0045] In addition, the base portion 20 is formed by cutting out and bending a conductive plate material such as a copper alloy or an aluminum alloy. The surface of the base portion 20 is not plated, but the present invention is not limited to this. Therefore, the surface may be plated with silver plating or tin plating to improve the conductivity. Alternatively, the surface may be partially plated. An example of a partially plated portion is one in which one surface of the electric wire connection portion 11 or the terminal connection portion 12 is plated. Alternatively, only the electric wire connection portion 11 or only the terminal connection portion 12 is plated.

[0046] The spring member 30 has an inner plate 31 that fits along the inner surface 21a of the side wall 21 when fitted between the pair of side walls 21. It also has an outer plate 32 that fits along the outer surface 21b of the side wall 21. It also has a flange plate 33 that connects upper ends of the inner plate 31 and the outer plate 32. It also has a bottom plate 34 that connects lower ends of the inner plates 31. Therefore, the spring member 30 is substantially M-shaped when viewed from the longitudinal direction L (see FIG. 4).

[0047] Moreover, the inner plate 31 on one side of the spring member 30 extends in the longitudinal direction L along the opening edge of the side wall 21, and six arm springs 35 extend from this inner plate 31 toward the opposing side wall 21 (see FIG. 7). These arm springs 35 all have the same shape, and specifically, when viewed from the longitudinal direction L, they extend obliquely downward so as to approach the opposing side wall 21, and have a shape in which a part including the tip edge is folded back (see FIG. 8).

[0048] The arm spring 35 provided on one side of the inner plate 31 extends from the lower edge of the inner plate 31 along the opening edge of the side wall 21, and the boundary portion with the inner plate 31 is set as a base point portion Pb (see FIG. 8). In the present female terminal 10, the base point portion Pb is always in contact with the inner surface 21a of the side wall 21. However, the base point portion Pb may be structured so that it comes into contact with the inner surface 21a of the side wall 21 when the male terminal 5 is inserted inside the female terminal 10 as the female terminal 10 is deformed.

[0049] Furthermore, the inner plate 31 on the other side of the spring member 30 also extends in the longitudinal direction L along the opening edge of the side wall 21, and six arm springs 35 extend from this inner plate 31 toward the opposing side wall 21 (see FIG. 7). These arm springs 35 all have the same shape, and specifically, when viewed from the longitudinal direction L, they extend obliquely downward so as to approach the opposing side wall 21, and have a shape in which a part including the tip edge is folded back (see FIG. 8).

[0050] The arm spring 35 provided on the other inner plate 31 also extends from the lower edge of the inner plate 31 along the opening edge of the side wall 21, and the boundary with the inner plate 31 serves as a base point Pb (see FIG. 8). In the present female terminal 10, the base point Pb always abuts against the inner surface 21a of the side wall 21. However, the base point Pb may be structured to abut in accordance with deformation when the male terminal 5 is inserted inside the female terminal 10.

[0051] In addition, the spring member 30 has the flange plate 33 in surface contact with the tip surface 21c of the side wall 21. Then, welding is performed along the longitudinal direction L in the area of ​​this surface contact. Therefore, a linear welded portion Pw is formed in the flange plate 33 (see Figs. 6 to 10). The welded portion Pw refers to a portion where part of the side wall 21 or the flange plate 33 melts and then cools and hardens again.

[0052] In addition, in the female terminal 10 according to this embodiment, a chamfered portion 23 is provided at the corner between the inner surface 21a and the tip surface 21c of the side wall 21. The chamfered portion 23 is a so-called C-chamfer, and therefore a triangular gap 23V is formed between the spring member 30 and the inclined surface of the chamfered portion 23. Specifically, the triangular gap 23V is formed between the inner plate 31 constituting the spring member 30 and the flange plate 33 constituting the spring member 30. The gap 23V has a lower thermal conductivity than the side wall 21, etc. Guidance Since the heat transfer suppressing portion 40 has a low heat transfer rate, the heat transfer suppressing portion 40 is provided on the heat transfer path T from the welded portion Pw to the base point Pb of the arm spring 35. With this configuration, the transfer of welding heat from the side wall 21 to the inner plate 31 can be suppressed.

[0053] To explain this in more detail, the intersection Y between the inclined surface of the chamfered portion 23 and the tip surface 21c is located on the outer side of the intersection X between the inner plate 31 and the flange plate 33, and the intersection Z between the inclined surface of the chamfered portion 23 and the inner side surface 21a is located on the lower side, forming a right-angled triangular gap 23V. The intersection Y is located on the inner side (the central axis side of the base portion 20) of the welded portion Pw, and the intersection Z is located above the base portion Pb. In addition, it is preferable that the intersection Z is located below the deepest point D of the welded portion Pw. With this configuration, the gap 23V functions sufficiently as the heat transfer suppression portion 40, and the transfer of welding heat from the side wall 21 to the inner plate 31 when welding the tip surface 21c of the side wall 21 and the flange plate 33 can be suppressed.

[0054] The reason why the intersection Z is preferably located below the deepest point D of the welded portion Pw is that the transfer of the welding heat from the side wall 21 to the inner plate 31 during the formation of the welded portion Pw can be suppressed as much as possible. Furthermore, the reason why the intersection Z is located above the base point Pb is to ensure that the base point Pb abuts against the inner surface 21a of the side wall 21. As a result, the reaction force from the side wall 21 acts on the arm spring 35 via the base point Pb, so that the contact portion Pc of the arm spring 35 can be brought into close contact with the side surface of the male terminal 5.

[0055] Incidentally, in the female terminal 10 according to this embodiment, a so-called C-chamfer is provided at the corner between the inner surface 21a and the tip surface 21c of the side wall 21. However, as shown in FIG. 11(a), a so-called R-chamfer may be provided. Alternatively, as shown in FIG. 11(b), a step shape may be formed. Furthermore, as shown in FIG. 11(c), instead of providing a chamfered shape at the corner of the side wall 21, a bulging portion 36 that bulges inward (toward the central axis of the base portion 20) may be provided on the inner plate 31. These configurations also provide the same effect.

[0056] Next, a female terminal 10 according to another embodiment will be described with reference to Fig. 12. In the female terminal 10, a tip surface 21c of the side wall 21 and a flange plate 33 provided along the tip surface 21c are welded to form a welded portion Pw.

[0057] Furthermore, in the female terminal 10 according to this embodiment, a groove 37 is provided on the inner surface 21a of the side wall 21 above the base point Pb of the arm spring 35. The groove 37 forms a cavity inside the side wall 21, so that it can be said that a rectangular gap 23V is formed inside the side wall 21. The gap 23V has a lower thermal conductivity than the side wall 21. Guidance Since the heat transfer suppressing portion 40 has a low heat transfer rate, the heat transfer suppressing portion 40 is provided on the heat transfer path T from the welded portion Pw to the base point Pb of the arm spring 35. With this configuration, the transfer of the welding heat toward the base point Pb of the arm spring 35 can be suppressed.

[0058] To explain this in more detail, the groove portion 37 is a concave groove provided from the inner surface 21a of the side wall 21 toward the outer side. It is preferable that the groove depth of the groove portion 37 exceeds the center line (line indicating the penetration direction) C of the welded portion Pw. With this configuration, the gap portion 23V functions sufficiently as the heat transfer suppressing portion 40, and it is possible to suppress the transfer of the welding heat toward the base portion Pb of the arm spring 35 when welding the tip end surface 21c of the side wall 21 and the flange plate 33.

[0059] The reason why the groove depth of the groove 37 is preferably greater than the center line C of the welded portion Pw is that the welding heat generated when forming the welded portion Pw can be prevented from being transmitted to the base point Pb of the arm spring 35 as much as possible. Furthermore, the groove 37 is provided above the base point Pb of the arm spring 35 in order to ensure that the base point Pb abuts against the inner surface 21a of the side wall 21. This allows the reaction force from the side wall 21 to act on the arm spring 35 via the base point Pb, making it possible to bring the contact portion Pc of the arm spring 35 into close contact with the side surface of the male terminal 5.

[0060] In the female terminal 10 according to the present embodiment, the welded portion Pw is formed by welding the tip surface 21c of the side wall 21 to the flange plate 33, and the groove portion 37 is provided on the inner surface 21a of the side wall 21 above the base point Pb of the arm spring 35. However, as shown in FIG. 13(a), the groove portion 37 may be provided on the tip surface 21c of the side wall 21. In such a configuration, the groove portion 37 needs to be provided on the inner side (the central axis side of the base portion 20) of the welded portion Pw. In addition, it is preferable that the groove depth of the groove portion 37 exceeds at least the deepest point D of the welded portion Pw from the tip surface 21c of the side wall 21. In any of the embodiments, it is possible to arrange a heat shielding member 50 inside the groove portion 37 as shown in FIG. 13(b). In these configurations, the same effect is achieved.

[0061] Next, a female terminal 10 according to another embodiment will be described with reference to Fig. 14. In the female terminal 10, the outer surface 21b of the side wall 21 and an outer plate 32 provided along the outer surface 21b are welded to form a welded portion Pw.

[0062] Furthermore, in the female terminal 10 according to this embodiment, a groove 37 is provided on the inner surface 21a of the side wall 21 above the base point Pb of the arm spring 35. The groove 37 forms a cavity inside the side wall 21, so that it can be said that a rectangular gap 23V is formed inside the side wall 21. The gap 23V has a lower thermal conductivity than the side wall 21. Guidance Since the heat transfer suppressing portion 40 has a low heat transfer rate, the heat transfer suppressing portion 40 is provided on the heat transfer path T from the welded portion Pw to the base point Pb of the arm spring 35. With this configuration, the transfer of the welding heat toward the base point Pb of the arm spring 35 can be suppressed.

[0063] To explain this in more detail, the groove portion 37 is a concave groove provided from the inner surface 21a of the side wall 21 toward the outer side. It is preferable that the groove depth of the groove portion 37 exceeds at least the line Lv connecting the deepest point D of the welded portion Pw and the base point Pb from the inner surface 21a of the side wall 21. With this configuration, the gap portion 23V functions sufficiently as the heat transfer suppression portion 40, and it is possible to suppress the transfer of welding heat toward the base point Pb of the arm spring 35 when welding the outer surface 21b of the side wall 21 and the outer plate 32.

[0064] The reason why the groove depth of the groove 37 is preferably greater than the line Lv connecting the deepest point D of the welded portion Pw and the base point Pb is that the welding heat generated when forming the welded portion Pw can be prevented from being transmitted to the base point Pb of the arm spring 35 as much as possible. Furthermore, the groove 37 is provided above the base point Pb of the arm spring 35 in order to ensure that the base point Pb abuts against the inner surface 21a of the side wall 21. As a result, the reaction force from the side wall 21 acts on the arm spring 35 via the base point Pb, so that the contact portion Pc of the arm spring 35 can be brought into close contact with the side surface of the male terminal 5.

[0065] In the female terminal 10 according to the present embodiment, the welded portion Pw is formed by welding the outer surface 21b of the side wall 21 to the outer plate 32, and the groove portion 37 is provided on the inner surface 21a of the side wall 21 above the base point Pb of the arm spring 35. However, as shown in FIG. 15(a), depending on the position where the welded portion Pw is formed, the groove portion 37 may be provided below the base point Pb of the arm spring 35. Alternatively, as shown in FIG. 15(b), the groove portion 37 may be provided on the tip surface 21c of the side wall 21. Even in such a configuration, it is preferable that the groove depth exceeds at least the line connecting the deepest point D of the welded portion Pw and the base point Pb. In any of the embodiments, it is possible to arrange a heat shielding member 50 inside the groove portion 37 as shown in FIG. 15(c). These configurations also have the same effect.

[0066] Next, a female terminal 10 according to another embodiment will be described with reference to Fig. 16. In the female terminal 10, an inner surface 21a of the side wall 21 and an inner plate 31 provided along the inner surface 21a are welded to each other to form a welded portion Pw.

[0067] Furthermore, in the female terminal 10 according to this embodiment, a groove 37 is provided on the inner surface 21a of the side wall 21 above the base point Pb of the arm spring 35. The groove 37 forms a cavity inside the side wall 21, so that it can be said that a rectangular gap 23V is formed inside the side wall 21. The gap 23V has a lower thermal conductivity than the side wall 21. Guidance Since the heat transfer suppressing portion 40 has a low heat transfer rate, the heat transfer suppressing portion 40 is provided on the heat transfer path T from the welded portion Pw to the base point Pb of the arm spring 35. With this configuration, the transfer of the welding heat toward the base point Pb of the arm spring 35 can be suppressed.

[0068] To explain this in more detail, the groove portion 37 is a concave groove provided from the inner surface 21a of the side wall 21 toward the outer side. It is preferable that the groove depth of the groove portion 37 exceeds at least the deepest point D of the welded portion Pw from the inner surface 21a of the side wall 21. With this configuration, the gap portion 23V functions sufficiently as the heat transfer suppressing portion 40, and it is possible to suppress the transfer of the welding heat toward the base point portion Pb of the arm spring 35 when welding the inner surface 21a of the side wall 21 and the inner plate 31.

[0069] The reason why the groove depth of the groove 37 is preferably greater than the deepest point D of the welded portion Pw is that the welding heat generated when forming the welded portion Pw can be prevented from being transmitted to the base point Pb of the arm spring 35 as much as possible. Furthermore, the groove 37 is provided above the base point Pb of the arm spring 35 in order to ensure that the base point Pb abuts against the inner surface 21a of the side wall 21. This allows the reaction force from the side wall 21 to act on the arm spring 35 via the base point Pb, making it possible to bring the contact portion Pc of the arm spring 35 into close contact with the side surface of the male terminal 5.

[0070] In the female terminal 10 according to the present embodiment, a welded portion Pw is formed by welding the inner surface 21a of the side wall 21 to the inner plate 31, and a groove portion 37 is provided in the inner surface 21a of the side wall 21 above the base point Pb of the arm spring 35. However, as shown in FIG. 17(a), depending on the position where the welded portion Pw is formed, the groove portion 37 may be provided below the base point Pb of the arm spring 35. In any of the embodiments, it is possible to arrange a heat shield 50 inside the groove portion 37 as shown in FIG. 17(b). These configurations also provide the same effect.

[0071] As described above, the female terminal 10 according to the present embodiment includes the base portion 20 connected to the electric wire 3 and the spring member 30 attached to the base portion 20, and the terminal body 13 is provided with the base portion 20. The base portion 20 has a pair of side walls 21 arranged at a predetermined interval so that the male terminal 5 can be inserted thereinto, and the spring member 30 has an installation plate (inner plate 31) installed along at least the inner surface 21a of the side wall 21 and an arm spring 35 extended from the installation plate (inner plate 31) toward the opposing side wall 21, and the side wall 21 and the installation plate (at least one of the inner plate 31, the outer plate 32, and the flange plate 33) are welded to form a welded portion Pw. The terminal body 13 is characterized in that a heat transfer suppressing portion 40 is provided on the heat transfer path T from the welded portion Pw to the base point portion Pb of the arm spring 35.

[0072] According to such a female terminal 10, the transmission of welding heat generated when welding the base portion 20 and the spring member 30 to the base point portion Pb of the arm spring 35 can be suppressed. More specifically, in the female terminal 10 according to the present invention, a heat transfer suppressing portion 40 is provided on the heat transfer path T from the welded portion Pw to the base point Pb of the arm spring 35. Therefore, it is possible to suppress the welding heat generated when welding the side wall 21 and the adjacent plates (the inner plate 31, the outer plate 32, and the flange plate 33) from being transferred to the inner plate 31 provided along the inner surface 21a of the side wall 21 and being transferred to the base point Pb at the boundary between the inner plate 31 and the arm spring 35. In other words, it is possible to suppress the welding heat generated when welding the base portion 20 and the spring member 30 from being transferred to the base point Pb of the arm spring 35.

[0073] In the female terminal 10 according to one embodiment, the heat transfer suppressing portion 40 is a gap 23V formed between the side wall 21 and the longitudinal plates (the inner plate 31 and the flange plate 33). The gap 23V is a hollow portion filled with air.

[0074] According to such a female terminal 10, the thermal conductivity of the side wall 21 Guidance Heat transfer rate of air compared to Guidance Since the rate of heat transfer is extremely low, it is possible to prevent the welding heat from being transferred across the gap 23V to the inner plate 31 provided along the inner surface 21a of the side wall 21. As a result, it is possible to prevent the welding heat from being transferred to the base point portion Pb of the arm spring 35.

[0075] In addition, in such a female terminal 10, a portion of the installation plate (flange plate 33) is installed along the tip surface 21c of the side wall 21, and the tip surface 21c of the side wall 21 and the installation plate (flange plate 33) are welded to form a welded joint Pw, and a chamfered portion 23 is provided at the corner between the inner surface 21a of the side wall 21 and the tip surface 21c, and the heat transfer suppression portion 40 may be a gap portion 23V formed between the chamfered portion 23 and the installation plate (inner plate 31 and flange plate 33).

[0076] According to such a female terminal 10, a gap 23V serving as a heat transfer suppression portion 40 is formed between the chamfered portion 23 and the adjacent plates (the inner plate 31 and the flange plate 33). More specifically, the gap 23V serving as a heat transfer suppression portion 40 is formed between the chamfered portion 23 provided on the side wall 21, the inner plate 31 provided along the inner surface 21a of the side wall 21, and the flange plate 33 provided along the tip surface 21c of the side wall 21. Therefore, it is possible to suppress the welding heat from being transferred beyond the gap 23V to the inner plate 31 provided along the inner surface 21a of the side wall 21. Furthermore, it is possible to suppress the welding heat from being transferred to the base point portion Pb of the arm spring 35.

[0077] In addition, in such a female terminal 10, a bulge portion 36 that bulges inward (toward the central axis of the base portion 20) is provided on an installation plate (inner plate 31) arranged along the inner surface 21a of the side wall 21, and the heat transfer suppression portion 40 may be a gap portion 23V formed between the side wall 21 and the bulge portion 36.

[0078] According to such a female terminal 10, a gap 23V serving as a heat transfer suppression portion 40 is formed between the side wall 21 and the bulging portion 36. More specifically, a gap 23V serving as a heat transfer suppression portion 40 is formed between the inner surface 21a of the side wall 21 and the bulging portion 36 of the inner plate 31 provided along the inner surface 21a of the side wall 21. Therefore, it is possible to suppress the welding heat from being transferred beyond the gap 23V to the inner plate 31 provided along the inner surface 21a of the side wall 21. Furthermore, it is possible to suppress the welding heat from being transferred to the base point portion Pb of the arm spring 35.

[0079] In addition, in a female terminal 10 according to another embodiment, the heat transfer suppressing portion 40 is a gap portion 23V formed inside the side wall 21. The gap portion 23V in this embodiment is also a hollow portion filled with air.

[0080] According to such a female terminal 10, the thermal conductivity of the side wall 21 Guidance Heat transfer rate of air compared to Guidance Since the rate of the welding heat is extremely low, it is possible to suppress the welding heat from being transmitted through the gap 23V to the inside of the side wall 21, and further to suppress the welding heat from being transmitted to the inner plate 31 provided along the inner surface 21a of the side wall 21. As a result, it is possible to suppress the welding heat from being transmitted to the base point portion Pb of the arm spring 35.

[0081] In addition, in such a female terminal 10, a portion of the installation plate (flange plate 33) is installed along the tip surface 21c of the side wall 21, and the tip surface 21c of the side wall 21 and the installation plate (flange plate 33) are welded to form a welded joint Pw, and a groove portion 37 is provided on the inner surface 21a of the side wall 21 on the welded joint Pw side relative to the base point portion Pb, and the heat transfer suppression portion 40 may be a gap portion 23V formed inside the side wall 21 by the groove portion 37.

[0082] According to such a female terminal 10, the groove portion 37 forms a gap portion 23V, which is a heat transfer suppression portion 40, inside the side wall 21. More specifically, a concave groove is provided from the inner surface 21a of the side wall 21 toward the outside, so that the gap portion 23V, which is a heat transfer suppression portion 40, is formed inside the side wall 21. Therefore, it is possible to suppress the welding heat from being transferred to the inside of the side wall 21 beyond the gap portion 23V, and further, it is possible to suppress the welding heat from being transferred to the inner plate 31 provided along the inner surface 21a of the side wall 21. As a result, it is possible to suppress the welding heat from being transferred to the base point portion Pb of the arm spring 35.

[0083] In addition, in such a female terminal 10, a portion of the installation plate (flange plate 33) is installed along the tip surface 21c of the side wall 21, and the tip surface 21c of the side wall 21 and the installation plate (flange plate 33) are welded to form a welded joint Pw, and a groove portion 37 is provided on the tip surface 21c of the side wall 21 on the inner side (toward the central axis of the base portion 20) of the welded joint Pw, and the heat transfer suppression portion 40 may be a gap portion 23V formed inside the side wall 21 by the groove portion 37.

[0084] According to such a female terminal 10, the groove portion 37 forms a gap portion 23V, which is a heat transfer suppression portion 40, inside the side wall 21. More specifically, a concave groove is provided from the tip surface 21c of the side wall 21 toward the bottom wall side, so that the gap portion 23V, which is a heat transfer suppression portion 40, is formed inside the side wall 21. Therefore, it is possible to suppress the welding heat from being transferred to the inside of the side wall 21 beyond the gap portion 23V, and further, it is possible to suppress the welding heat from being transferred to the inner plate 31 provided along the inner surface 21a of the side wall 21. As a result, it is possible to suppress the welding heat from being transferred to the base point portion Pb of the arm spring 35.

[0085] In addition, in such a female terminal 10, a portion of a mounting plate (outer plate 32) is provided along the outer surface 21b of the side wall 21, and the outer surface 21b of the side wall 21 and the mounting plate (outer plate 32) are welded to form a welded joint Pw, and a groove portion 37 is provided on the inner surface 21a of the side wall 21 on the welded joint Pw side relative to the base point portion Pb, and the heat transfer suppression portion 40 may be a gap portion 23V formed inside the side wall 21 by the groove portion 37.

[0086] According to such a female terminal 10, the groove portion 37 forms a gap portion 23V, which is a heat transfer suppression portion 40, inside the side wall 21. More specifically, a concave groove is provided from the inner surface 21a of the side wall 21 toward the outside, so that the gap portion 23V, which is a heat transfer suppression portion 40, is formed inside the side wall 21. Therefore, it is possible to suppress the welding heat from being transferred to the inside of the side wall 21 beyond the gap portion 23V, and further, it is possible to suppress the welding heat from being transferred to the inner plate 31 provided along the inner surface 21a of the side wall 21. As a result, it is possible to suppress the welding heat from being transferred to the base point portion Pb of the arm spring 35.

[0087] In addition, in such a female terminal 10, a portion of a mounting plate (outer plate 32) is mounted along the outer surface 21b of the side wall 21, and the outer surface 21b of the side wall 21 and the mounting plate (outer plate 32) are welded to form a welded joint Pw, and a groove portion 37 is provided on the tip surface 21c of the side wall 21 on the inner side (toward the central axis of the base portion 20) of the welded joint Pw, and the heat transfer suppression portion 40 may be a gap portion 23V formed inside the side wall 21 by the groove portion 37.

[0088] According to such a female terminal 10, the groove portion 37 forms a gap portion 23V, which is a heat transfer suppression portion 40, inside the side wall 21. More specifically, a concave groove is provided from the tip surface 21c of the side wall 21 toward the bottom wall side, so that the gap portion 23V, which is a heat transfer suppression portion 40, is formed inside the side wall 21. Therefore, it is possible to suppress the welding heat from being transferred to the inside of the side wall 21 beyond the gap portion 23V, and further, it is possible to suppress the welding heat from being transferred to the inner plate 31 provided along the inner surface 21a of the side wall 21. As a result, it is possible to suppress the welding heat from being transferred to the base point portion Pb of the arm spring 35.

[0089] In addition, in such a female terminal 10, the inner surface 21a of the side wall 21 and an installation plate (inner plate 31) are welded to form a weld Pw, and a groove portion 37 is provided on the inner surface 21a of the side wall 21 on the weld Pw side of the base point portion Pb, and the heat transfer suppression portion 40 may be a gap portion 23V formed inside the side wall 21 by the groove portion 37.

[0090] According to such a female terminal 10, the groove portion 37 forms a gap portion 23V, which is a heat transfer suppression portion 40, inside the side wall 21. More specifically, a concave groove is provided from the inner surface 21a of the side wall 21 toward the outside, so that the gap portion 23V, which is a heat transfer suppression portion 40, is formed inside the side wall 21. Therefore, it is possible to suppress the welding heat from being transferred to the inside of the side wall 21 beyond the gap portion 23V, and further, it is possible to suppress the welding heat from being transferred to the inner plate 31 provided along the inner surface 21a of the side wall 21. As a result, it is possible to suppress the welding heat from being transferred to the base point portion Pb of the arm spring 35.

[0091] In addition, in the female terminal 10, a heat shield 50 may be disposed in the gap 23V. The heat shield 50 has a higher thermal conductivity than the side wall 21. Guidance The material is a solid with a low thermal conductivity. Specifically, ceramics are considered to be such a material.

[0092] According to such a female terminal 10, the thermal conductivity of the side wall 21 Guidance The thermal conductivity of the heat insulating member 50 is Guidance It has a low thermal conductivity and transfers heat by convection like air. Guidance Since the rate does not change, the welding heat can be reliably prevented from being transmitted through the gap 23V to the inside of the side wall 21, and further, the welding heat can be reliably prevented from being transmitted to the inner plate 31 provided along the inner surface 21a of the side wall 21. As a result, the welding heat can be reliably prevented from being transmitted to the base point portion Pb of the arm spring 35.

[0093] In addition, in the female terminal 10 according to each embodiment, the heat conduction of the side wall 21 Guidance The heat transfer rate of the plates (inner plate 31, outer plate 32 and flange plate 33) is Guidance Specifically, by making the side wall 21 out of a copper alloy, the heat transfer rate is increased. Guidance The thermal conductivity of the stainless steel alloy plates (inner plate 31, outer plate 32 and flange plate 33) is 170W / (m·k). Guidance This is higher than the radiative efficiency (16 W / (m k)).

[0094] According to such a female terminal 10, it is possible to specify the heat transfer path from the welded portion Pw to the base point Pb of the arm spring 35, and to effectively prevent the welding heat from being transferred to the base point Pb of the arm spring 35. In other words, the heat transfer path from the welded portion Pw to the base point Pb of the arm spring 35 can be considered to be a path through the inside of the side wall 21, to the inner plate 31 provided along the inner surface 21a of the side wall 21, and to the base point Pb of the arm spring 35, and a path in which the welding heat is transferred along the provided plate (for example, from the flange plate 33 to the inner plate 31) and directly to the base point Pb of the arm spring 35. Guidance The heat transfer rate of the plates (inner plate 31, outer plate 32 and flange plate 33) is Guidance Therefore, by providing the heat transfer suppressing portion 40 on the heat transfer path, the transfer of the welding heat to the base point portion Pb of the arm spring 35 can be effectively suppressed.

[0095] In the female terminal 10 according to each embodiment, the side wall 21 and the adjacent plates (the inner plate 31, the outer plate 32, and the flange plate 33) are welded using a fiber laser welding machine, but the welding may be performed using an arc welding machine or the like. Also, the welding may be performed using a welding machine capable of ultrasonic welding, resistance welding, friction welding, or other welding. Furthermore, brazing and soldering, etc. are also included in the concept of welding.

[0096] In the configuration of the present invention and the above-mentioned embodiment, the connector of the present invention corresponds to the connector 1, Similarly, The wire harness corresponds to Wire Harness 2. The wire corresponds to wire 3, The connector housing is compatible with connector housing 4. The male terminal corresponds to the male terminal 5, The female terminal corresponds to the female terminal 10, The terminal body corresponds to terminal body 13, The base portion corresponds to the base portion 20, The side wall corresponds to the side wall 21; The inner surface corresponds to the inner surface 21a. The outer surface corresponds to the outer surface 21b. The tip surface corresponds to tip surface 21c, The chamfer corresponds to the chamfer 23, The gap corresponds to the gap 23V, The spring member corresponds to the spring member 30; The contact plates correspond to the inner plate 31, the outer plate 32, and the flange plate 33. The arm spring corresponds to the arm spring 35. The bulge corresponds to the bulge 36, The groove corresponds to the groove 37, The heat transfer suppression portion corresponds to the heat transfer suppression portion 40, The heat shield corresponds to the heat shield 50. The base point corresponds to the base point Pb, The weld corresponds to the weld Pw, The heat transfer path corresponds to the heat transfer path T, The present invention is not limited to the configurations of the above-described embodiments, and many other embodiments can be obtained.

[0097] For example, a female terminal 10 according to another embodiment will be described with reference to Fig. 18. Fig. 18(a) is a cross-sectional view corresponding to the cross-sectional view taken along the line DD in Fig. 9. Similarly, Fig. 18(b) is a cross-sectional view corresponding to the cross-sectional view taken along the line DD in Fig. 9.

[0098] As shown in FIG. 18(a), in one embodiment, the female terminal 10 has a chamfered portion 23 only at a position corresponding to the arm spring 35 of the spring member 30, and the tip surface 21c of the side wall 21 and the flange plate 33 are welded to each other only at the position corresponding to the chamfered portion 23 to form a welded portion Pw.

[0099] When configured in this manner, a gap 23V is formed as a heat transfer suppression portion 40 at a position corresponding to the arm spring 35. This makes it possible to suppress the welding heat from being transferred to the inner plate 31 provided along the inner surface 21a of the side wall 21. In turn, it makes it possible to suppress the welding heat from being transferred to the base point portion Pb of the arm spring 35. In this configuration, the effect is achieved even if the welded portion Pw is continuous.

[0100] Moreover, as shown in FIG. 18(b), in the female terminal 10 of another embodiment, a chamfered portion 23 is formed only at a position corresponding to the space between adjacent arm springs 35 of the spring member 30, and a welded portion Pw is formed by welding the tip surface 21c of the side wall 21 to the flange plate 33 only at a position corresponding to the chamfered portion 23.

[0101] When configured in this manner, a gap 23V serving as a heat transfer suppression portion 40 is formed at a position corresponding to the gap between adjacent arm springs 35. This makes it possible to suppress the welding heat from being transferred to the inner plate 31 provided along the inner surface 21a of the side wall 21. In turn, it makes it possible to suppress the welding heat from being transferred to the base portion Pb of the arm spring 35. In this configuration, the distance from the welded portion Pw to each arm spring 35 is long, so that a higher effect is achieved.

[0102] Finally, the present invention includes a connector 1 (see FIG. 1) having the aforementioned female terminal 10 and a connector housing 4 that accommodates the female terminal 10, as well as a terminal-attached electric wire 6 (see FIG. 1) having the aforementioned female terminal 10 and an electric wire 3 connected to a base portion 20 of the female terminal 10.

[0103] Furthermore, the present invention includes an electric wire with connector 7 (see FIG. 1) including the electric wire with terminal 6 and a connector housing 4 that accommodates the electric wire with terminal 6, as well as a wire harness 2 (see FIG. 1) including at least one of the electric wire with terminal 6 and the electric wire with connector 7.

[0104] These also provide the same effects as the female terminal 10 according to the present invention. That is, it is possible to suppress the transfer of welding heat generated when welding the base portion 20 and the spring member 30 to the base portion Pb of the arm spring 35. In addition, effects according to the embodiments of the female terminal 10 can be obtained. [Explanation of symbols]

[0105] 1…Connector 2. Wire harness 3...Electric wire 4…Connector housing 5...Male terminal 6…Terminal attached wire 7…Wire with connector 10...Female terminal 13...Terminal body 20…Base 21...Side wall 21a…Inner surface 21b...outer surface 21c…Tip surface 23… Chamfered part 23V…Void part 30...Spring member 31…Inner plate 32…Outer panel 33...Tsubara plate 35…Arm spring 36…bulge 37…Groove 40…Heat transfer suppression section 50...Heat shielding material Pb…Base point Pw: Welded part T…Heat transfer path

Claims

1. A base portion to be connected to the electric wire; A terminal body is provided by the spring member attached to the base portion, The base portion has a pair of side walls arranged at a predetermined interval into which the male terminal can be inserted, The spring member has at least an installation plate provided along an inner surface of the side wall and an arm spring extending from the installation plate toward the opposing side wall, The side wall and the longitudinal plate are welded to form a welded portion, A heat transfer suppressing portion is provided on a heat transfer path from the welded portion to the base portion of the arm spring. Female terminal.

2. The heat transfer suppressing portion is a gap portion formed between the side wall and the longitudinal plate. The female terminal according to claim 1 .

3. A part of the installation plate is provided along the tip surface of the side wall, The tip end surface of the side wall and the longitudinal plate are welded to form the welded portion, A chamfer is provided at a corner between an inner surface of the side wall and a tip surface, The heat transfer suppressing portion is a gap formed between the chamfered portion and the longitudinal plate. The female terminal according to claim 2 .

4. The side plate is provided along the inner surface of the side wall, and a bulging portion bulging inward is provided on the side plate, The heat transfer suppressing portion is a gap formed between the side wall and the bulging portion. The female terminal according to claim 2 or 3.

5. The heat transfer suppressing portion is a gap formed inside the side wall. The female terminal according to claim 1 .

6. A part of the installation plate is provided along the tip surface of the side wall, The tip end surface of the side wall and the longitudinal plate are welded to form the welded portion, A groove is provided on an inner surface of the side wall on the welded portion side of the base point portion, The heat transfer suppressing portion is a gap portion formed inside the side wall by the groove portion. The female terminal according to claim 5 .

7. A part of the installation plate is provided along the tip surface of the side wall, The tip end surface of the side wall and the longitudinal plate are welded to form the welded portion, A groove is provided on a tip surface of the side wall on the inner side of the welded portion, The heat transfer suppressing portion is a gap portion formed inside the side wall by the groove portion. The female terminal according to claim 5 .

8. A part of the installation plate is provided along an outer surface of the side wall, The outer surface of the side wall and the longitudinal plate are welded to form the welded portion, A groove is provided on an inner surface of the side wall on the welded portion side of the base point portion, The heat transfer suppressing portion is a gap portion formed inside the side wall by the groove portion. The female terminal according to claim 5 .

9. A part of the installation plate is provided along an outer surface of the side wall, The outer surface of the side wall and the longitudinal plate are welded to form the welded portion, A groove is provided on a tip surface of the side wall on the inner side of the welded portion, The heat transfer suppressing portion is a gap portion formed inside the side wall by the groove portion. The female terminal according to claim 5 .

10. The inner surface of the side wall and the longitudinal plate are welded to form the welded portion, A groove is provided on an inner surface of the side wall on the welded portion side of the base point portion, The heat transfer suppressing portion is a gap portion formed inside the side wall by the groove portion. The female terminal according to claim 5 .

11. A heat insulating member is disposed in the gap. The female terminal according to any one of claims 2 to 10.

12. The thermal conductivity of the side wall is higher than the thermal conductivity of the base plate. The female terminal according to any one of claims 2 to 11.

13. A female terminal according to any one of claims 1 to 12, and a connector housing for accommodating the female terminal. connector.

14. A female terminal according to any one of claims 1 to 12, The electric wire is connected to the base portion of the female terminal. Wire with terminal.

15. An electric wire with a terminal according to claim 14; and a connector housing for accommodating the electric wire with terminal. Wire with connector.

16. The wire with terminal according to claim 14 or the wire with connector according to claim 15 is included. Wire harness.

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