Wire holder and wire with wire holder

Abstract

To provide a wire holder and a wire with a wire holder that reduce stress on electric wires.SOLUTION: A wire holder 1 holds an electric wire 20, and is formed from a single metal plate and includes an electric wire holding portion 10 that holds the electric wire 20, the electric wire holding portion 10 includes a low rigidity portion 11, and a first high rigidity portion 12a and a second high rigidity portion 12b having rigidity higher than that of the low rigidity portion 11, and the low rigidity portion 11 is located between the first high rigidity portion 12a and the second high rigidity portion 12b.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a wire retainer for holding an electric wire, and an electric wire with a wire retainer. [Background technology]

[0002] In this technical field, for example, the technology described in Patent Document 1 is disclosed. Patent Document 1 discloses an electric wire holder having a holding part that holds an electric wire. The holding part of the electric wire holder described in Patent Document 1 has an opening for receiving the electric wire and a recessed part that houses the electric wire through the opening. With the electric wire housed in the recessed part, the holding part is crimped, and the electric wire is held in the electric wire holder. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-61935 A Summary of the Invention [Problem to be solved by the invention]

[0004] When the electric wire is held by the electric wire holder by crimping the electric wire holder in this way, the electric wire may also be deformed in accordance with the deformation of the electric wire holder. If the electric wire is held in a deformed state, the electric wire is constantly subjected to stress from the electric wire holder.

[0005] In view of the above, an object of the present disclosure is to provide a wire holder and an electric wire with a wire holder that reduce stress applied to the electric wire. [Means for solving the problem]

[0006] The wire holder of the present disclosure is a wire holder that holds an electric wire, is formed from a single metal plate, and includes a wire holding portion that holds the electric wire, the wire holding portion having a low rigidity portion, and a first high rigidity portion and a second high rigidity portion having rigidity higher than the low rigidity portion, and the low rigidity portion is located between the first high rigidity portion and the second high rigidity portion.

[0007] Moreover, the electric wire with wire holder of the present disclosure is an electric wire with wire holder comprising an electric wire and a wire holder that holds the electric wire, the wire holder being formed from a single metal plate and comprising an electric wire holding portion that holds the electric wire, the electric wire holding portion having a low rigidity portion, and a first high rigidity portion and a second high rigidity portion having rigidity higher than that of the low rigidity portion, the low rigidity portion being located between the first high rigidity portion and the second high rigidity portion, and the electric wire is held in the electric wire holding portion by crimping the electric wire holding portion to the electric wire.

[0008] Moreover, the electric wire with wire holder of the present disclosure is an electric wire with a wire holder comprising an electric wire and a wire holder that holds the electric wire, the wire holder being formed from a single metal plate and comprising a wire holding portion that holds the electric wire, the wire holding portion having a gap along the axial direction of the electric wire, the electric wire being held in the wire holding portion by crimping the wire holding portion, the electric wire having a coating portion including an outermost coating portion, and a part of the outermost coating portion being clamped between two ends of the wire holding portion on the gap side. Effect of the Invention

[0009] According to the present disclosure, there is provided a wire holder and a wire with a wire holder that reduces stress on the wire. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view showing a wire holder according to an embodiment of the present disclosure. [Diagram 2] FIG. 2 is a front view showing the electric wire holder. [Diagram 3] FIG. 3 is a side view showing the electric wire holder. [Figure 4] FIG. 4 is an explanatory view showing the electric wire holder in an expanded state. [Diagram 5] FIG. 5 is an explanatory diagram showing the state of the electric wire holding portion before and after crimping. [Figure 6] FIG. 6 is a cross-sectional view of an electric wire showing the stress applied to the electric wire after the electric wire holder and the electric wire are crimped using a conventional electric wire holder. [Figure 7] FIG. 7 is a cross-sectional view of an electric wire showing the stress applied to the electric wire after the electric wire holder of the present embodiment is used to crimp the electric wire with the electric wire holder. [Figure 8] FIG. 8 is a perspective view showing a wire holder according to another embodiment. [Figure 9] FIG. 9 is a front view showing a wire holder according to another embodiment together with wires. [Figure 10] FIG. 10 is a cross-sectional view showing an electric wire held by an electric wire holder of another embodiment. [Figure 11] FIG. 11 is a front view showing the electric wire holder together with the electric wire before being crimped. [Figure 12] FIG. 12 is a front view showing a wire holder according to another embodiment together with wires. [Figure 13] FIG. 13 is a perspective view showing a wire holder according to another embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] [Description of the embodiments of the present disclosure] First, embodiments of the present disclosure will be listed and described.

[0012] The wire holder and the wire with the wire holder of the present disclosure are as follows.

[0013] (1) A wire holder for holding an electric wire, the wire holder being formed from a single metal plate and including a wire holder for holding the electric wire, the wire holder having a low rigidity portion and a first high rigidity portion and a second high rigidity portion having a rigidity higher than that of the low rigidity portion, the low rigidity portion being located between the first high rigidity portion and the second high rigidity portion. As a result, the low rigidity portion is primarily deformed, and the first high rigidity portion and the second high rigidity portion are not significantly deformed. By providing the low rigidity portion and the high rigidity portion, it is easy to determine the portion of the wire holder that is primarily deformed (low rigidity portion) and the portion that is primarily not deformed (high rigidity portion). Since the shape of the wire holder after crimping is easily controlled, the stress applied to the electric wire from the wire holder is reduced.

[0014] (2) In the electric wire holder of (1), the first high-rigidity portion and the second high-rigidity portion may have a shape that conforms to the outer circumferential surface of the electric wire. This makes the first high-rigidity portion and the second high-rigidity portion less likely to deform, so that the shapes of the opposing portions of the first high-rigidity portion and the second high-rigidity portion are maintained in conformity with the outer circumferential surface of the electric wire even after the electric wire holding portion and the electric wire are crimped. This reduces the stress applied to the electric wire from the electric wire holding portion.

[0015] (3) In the electric wire holder of (1) or (2), the low-rigidity portion may be shorter than the first and second high-rigidity portions in the longitudinal direction of the electric wire. This makes the low-rigidity portion less rigid than the first and second high-rigidity portions. This makes the low-rigidity portion more easily deformable than the first and second high-rigidity portions.

[0016] (4) The electric wire holder according to any one of (1) to (3), wherein the first high-rigidity portion and the second high-rigidity portion each have a base portion arranged along the electric wire in the longitudinal direction of the electric wire, and a strength reinforcement portion connected to an end portion of the electric wire in the longitudinal direction at the base portion, and the strength reinforcement portion may extend outward in the circumferential direction of the electric wire. The first high-rigidity portion and the second high-rigidity portion have a cross section when cut along the longitudinal direction of the electric wire that is bent at a portion where the base portion and the strength reinforcement portion are connected. When bent in the longitudinal direction in this manner, it is considered that the rigidity is higher than when not bent. This makes the first high-rigidity portion and the second high-rigidity portion more difficult to deform than the low-rigidity portion.

[0017] (5) In the electric wire holder of (4), the strength reinforcing portion may be extended to expand outward in a circumferential direction of the electric wire as it moves away from the base portion, thereby suppressing contact between the electric wire and a longitudinal end of the electric wire at the strength reinforcing portion (electric wire holding portion).

[0018] (6) In the electric wire holder according to any one of (1) to (5), the electric wire holding portion may include a single low-rigidity portion. This allows the electric wire holding portion to have a single portion that is easily deformed. This makes it easier to control the shape of the electric wire holding portion when holding the electric wire. This further reduces the stress applied to the electric wire from the electric wire holding portion.

[0019] (7) The electric wire holder according to any one of (1) to (6) may further include an extension part that is connected to an end part of the electric wire in the circumferential direction at the electric wire holding part and extends outward in the circumferential direction of the electric wire, thereby preventing contact between the end part of the electric wire in the circumferential direction and the electric wire at the electric wire holding part and the extension part.

[0020] (8) An electric wire with a wire holder, comprising an electric wire and an electric wire holder for holding the electric wire, the electric wire holder being formed from a single metal plate and comprising an electric wire holding portion for holding the electric wire, the electric wire holding portion having a low rigidity portion and a first high rigidity portion and a second high rigidity portion having a rigidity higher than that of the low rigidity portion, the low rigidity portion being located between the first high rigidity portion and the second high rigidity portion, the electric wire being held in the electric wire holding portion by the electric wire being crimped by the electric wire holding portion. When the electric wire holding portion is crimped, a force is applied to the electric wire holding portion by the crimping tool, and the electric wire holding portion is deformed. In this way, the electric wire is held in the electric wire holding portion. In this case, the low rigidity portion is mainly deformed, and the first high rigidity portion and the second high rigidity portion are not deformed much. By providing a low rigidity portion and a high rigidity portion, it is easy to determine a portion of the electric wire holding portion that is mainly deformed (low rigidity portion) and a portion that is mainly not deformed (high rigidity portion). Since the shape of the electric wire holding portion after crimping is easily controlled, the stress applied to the electric wire from the electric wire holding portion is reduced.

[0021] (9) In the electric wire with electric wire holder of (8), a gap may be formed between the first high-rigidity portion and the second high-rigidity portion, the electric wire has a coating including an outermost coating, and a part of the outermost coating may be clamped between an end of the first high-rigidity portion on the gap side and an end of the second high-rigidity portion on the gap side, thereby improving the holding force of the electric wire compared to a case where the part of the outermost coating is not clamped anywhere.

[0022] (10) The electric wire with electric wire holder of (9) may further include a first extension portion connected to an end of the first high-rigidity portion on the gap side and a second extension portion connected to an end of the second high-rigidity portion on the gap side, and a part of the outermost covering portion may be sandwiched between the first extension portion and the second extension portion, thereby further improving the holding force of the electric wire by sandwiching a part of the outermost covering portion between the first extension portion and the second extension portion.

[0023] (11) In the electric wire with electric wire holder of (10), the first extension portion may have a first flat portion formed on a side facing the second extension portion, and the second extension portion may have a second flat portion formed on a side facing the first extension portion, and the outermost covering portion protruding from the gap may be in surface contact with at least one of the first flat portion and the second flat portion. Since the portion protruding from the gap is in surface contact with at least one of the first flat portion and the second flat portion, the stress that the electric wire receives from the electric wire holder is mitigated from being concentrated in one portion.

[0024] (12) In the electric wire with electric wire holder of any one of (9) to (11), a radius of curvature of at least one of a surface of the first high-rigidity portion facing the electric wire and a surface of the second high-rigidity portion facing the electric wire may be smaller than a radius of the outermost coating portion before being held by the electric wire holder. This makes it easier for the outermost coating portion of the electric wire to protrude from the first high-rigidity portion or the second high-rigidity portion. The protruding portion of the outermost coating portion from the first high-rigidity portion or the second high-rigidity portion is easily clamped between the first extension portion and the second extension portion.

[0025] (13) The electric wire with electric wire holder according to any one of (9) to (12), wherein the radius of curvature of the surface of the first high-rigidity portion facing the electric wire and the radius of curvature of the surface of the second high-rigidity portion facing the electric wire may be different. This allows the outermost coating layer to be easily pushed out so as to escape from the end of the first high-rigidity portion or the second high-rigidity portion. The outermost coating layer is easily pushed out from the end with the larger radius of curvature. In this way, the outermost coating layer is easily pushed out from the gap from the first high-rigidity portion or the second high-rigidity portion. Therefore, the outermost coating layer protruding from the gap is easily clamped between the first extension portion and the second extension portion.

[0026] (14) The electric wire with the electric wire holder according to any one of (9) to (13), wherein the electric wire further has an inner coating part inside the outermost coating part, and the inner diameter of the outermost coating part may be larger than the outer diameter of the inner coating part. This creates slack between the outermost coating part and the inner coating part. The slack part of the outermost coating part created in this way is easily clamped between the first extension part and the second extension part.

[0027] (15) An electric wire with a wire holder, comprising an electric wire and a wire holder for holding the electric wire, the electric wire holder being formed from a single metal plate and comprising an electric wire holding portion for holding the electric wire, the electric wire holding portion having a gap along the axial direction of the electric wire, the electric wire being held by the electric wire holding portion by crimping the electric wire, the electric wire having a coating portion including an outermost coating portion, a part of the outermost coating portion being clamped between two ends of the electric wire holding portion on the side of the gap. By clamping a part of the outermost coating portion between the two ends, the electric wire holder can be crimped with a force that reduces the burden on the electric wire while maintaining the holding force of the electric wire holder for holding the electric wire, thereby reducing the stress on the electric wire.

[0028] [Details of the embodiment of the present disclosure] [First embodiment] Specific examples of the wire holder of the present disclosure will be described with reference to the following drawings. Note that the present disclosure is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope of the claims.

[0029] The wire holder according to the present disclosure will now be described.

[0030] <About wire holder 1> The structure of the electric wire holder according to the first embodiment will be outlined below. Fig. 1 is a perspective view showing an electric wire holder 1 according to the first embodiment of the present disclosure. Fig. 2 is a front view showing the electric wire holder 1. Fig. 3 is a side view showing the electric wire holder 1. In Figs. 1 to 3, electric wires 20 are shown by imaginary lines.

[0031] The wire holder 1 holds the wire 20. As shown in Figs. 1, 2 and 3, the wire holder 1 includes a wire holding portion 10 that holds the wire 20. In this embodiment, the wire holder 1 further includes an extension portion 30 that is connected to the wire holding portion 10. The extension portion 30 is connected to an end portion 10a (10b) of the wire 20 in the circumferential direction A at the wire holding portion 10. The extension portion 30 extends outward in the circumferential direction A of the wire 20. In this embodiment, the extension portion 30 includes a first extension portion 31 and a second extension portion 32. The first extension portion 31 is connected to one end portion 10a of the wire 20 in the circumferential direction A at the wire holding portion 10. The first extension portion 31 and the second extension portion 32 are flat. The second extension portion 32 is connected to an end portion 10b of the electric wire 20 in the circumferential direction A of the electric wire holding portion 10, which is different from the end portion 10a. The extension portion 30 may be either one of the first extension portion 31 and the second extension portion 32. The first extension portion 31 is extended farther outward in the circumferential direction A than the second extension portion 32. The first extension portion 31 may function as a fixing portion to another member. When the first extension portion 31 serves as a fixing portion, a fixing structure may be adopted in which the first extension portion 31 and holes formed in the other member are screwed. In addition, other fixing structures such as welding may be adopted for fixing the first extension portion 31 to the other member. In addition, the first extension portion 31 may be fixed to the other member by applying an adhesive to the contact surface of the first extension portion 31 with the other member, for example.

[0032] <Wire holding part 10> FIG. 4 is an explanatory view showing the wire holder 1 in an exploded view.

[0033] As shown in Fig. 4, the wire holding portion 10 is formed from a single metal plate. In this embodiment, the wire holder 1 is formed from a single metal plate including the extension portion 30. The wire holder 1 is formed, for example, from a metal plate having a shape as shown in Fig. 4 by press working, and then further pressed into the shape of the wire holding portion 10 as described later.

[0034] The electric wire holding portion 10 has a low rigidity portion 11, and a first high rigidity portion 12a and a second high rigidity portion 12b having a rigidity higher than that of the low rigidity portion 11. Hereinafter, the first high rigidity portion 12a and the second high rigidity portion 12b are collectively referred to as high rigidity portion 12. The low rigidity portion 11 is a portion having low rigidity. The low rigidity portion 11 is a portion that is easily deformed. The low rigidity portion 11 is, for example, a portion having a small second moment of area and a small section modulus. The high rigidity portion 12 is a portion having a higher rigidity than the low rigidity portion 11. The high rigidity portion 12 is a portion that is less likely to deform than the low rigidity portion 11. The high rigidity portion 12 is, for example, a portion having a large second moment of area and a large section modulus. In this embodiment, the electric wire holding portion 10 has a single low rigidity portion 11. In this embodiment, the single low rigidity portion 11 is located between the first high rigidity portion 12a and the second high rigidity portion 12b. The first extension portion 31 is connected to an end portion 10a of the first high rigidity portion 12a (wire holding portion 10) in the circumferential direction A of the wire 20. The second extension portion 32 is connected to an end portion 10b of the second high rigidity portion 12b (wire holding portion 10) in the circumferential direction A of the wire 20.

[0035] The wire holding portion 10 may include two or more low rigidity portions 11. When the wire holding portion 10 includes two or more low rigidity portions 11, the low rigidity portions 11 and the high rigidity portions 12 are alternately positioned in the circumferential direction A. For example, they are arranged in parallel in the circumferential direction A in the order of the first extension portion 11a, the high rigidity portion 12, the low rigidity portion 11, the high rigidity portion 12, the low rigidity portion 11, the high rigidity portion 12, and the second extension portion 11b. The high rigidity portions 12 and the low rigidity portions 11 may be arranged in either order, and the low rigidity portion 11 may be adjacent to the first extension portion 11a or the second extension portion 11b.

[0036] As shown in FIG. 2, the distance X between both ends of the electric wire holding portion 10 in the circumferential direction A of the electric wire 20 is larger than the diameter D of the cross section of the electric wire 20 before the electric wire 20 is held. As a result, when the electric wire 20 is held by the electric wire holding portion 10, the electric wire 20 is inserted in the direction of the arrow P shown in FIG. 2. At this time, since the diameter D of the cross section of the electric wire 20 is smaller than the distance X, the electric wire 20 is smoothly inserted into the electric wire holding portion 10. Furthermore, since the first extension portion 31 is provided to extend outward in the circumferential direction A of the electric wire 20, the first extension portion 31 does not prevent the electric wire 20 from being inserted into the electric wire holding portion 10. Similarly, since the second extension portion 32 is provided to extend outward in the circumferential direction A of the electric wire 20, the second extension portion 32 does not prevent the electric wire 20 from being inserted into the electric wire holding portion 10.

[0037] In this embodiment, the low-rigidity portion 11 is shorter than the first high-rigidity portion 12a and the second high-rigidity portion 12b in the longitudinal direction L of the electric wire 20. As a result, although the low-rigidity portion 11 and the high-rigidity portion 12 (the first high-rigidity portion 12a and the second high-rigidity portion 12b) are made of the same material, the difference in shape causes a difference in rigidity. The reason for this is as follows. The low-rigidity portion 11 and the high-rigidity portion 12 are made from the same metal plate. The low-rigidity portion 11 and the high-rigidity portion 12 have the same plate thickness. On the other hand, the low-rigidity portion 11 and the high-rigidity portion 12 have different lengths in the longitudinal direction L of the electric wire 20. Therefore, when the low-rigidity portion 11 and the high-rigidity portion 12 are cut along the longitudinal direction L of the electric wire 20, the cross-sectional area of ​​the low-rigidity portion 11 is smaller than the cross-sectional area of ​​the high-rigidity portion 12. That is, because there is such a difference in shape between the low rigidity portion 11 and the high rigidity portion 12, the low rigidity portion 11 has lower rigidity than the high rigidity portion 12 and is more likely to deform. The difference in rigidity between the low rigidity portion 11 and the high rigidity portion 12 is not limited to the difference in length between the low rigidity portion 11 and the high rigidity portion 12 in the longitudinal direction L of the electric wire 20 as described above. For example, a difference in cross-sectional area between the low rigidity portion 11 and the high rigidity portion 12 may occur due to a difference in plate thickness between the low rigidity portion 11 and the high rigidity portion 12.

[0038] In this embodiment, each of the first high rigidity portion 12a and the second high rigidity portion 12b has a base portion 13 and a strength reinforcing portion 14 provided contiguous to the base portion 13.

[0039] The base 13 is disposed along the electric wire 20 in the longitudinal direction L of the electric wire 20. The base 13 is disposed parallel to the electric wire 20 in the longitudinal direction L of the electric wire 20. The strength reinforcement portion 14 is connected to an end portion 13a of the base 13 in the longitudinal direction L of the electric wire 20. In this embodiment, the strength reinforcement portion 14 is a portion (protruding portion) in the first high rigidity portion 12a and the second high rigidity portion 12b that protrudes in the longitudinal direction L of the electric wire 20 more than the low rigidity portion 11. Note that the strength reinforcement portion 14 is not limited to a configuration in which it is the entire protruding portion. The strength reinforcement portion 14 may be only a portion of the protruding portion.

[0040] In the present embodiment, the strength reinforcing portion 14 is provided so as to extend outward in the circumferential direction of the electric wire. The strength reinforcing portion 14 is provided so as to extend outward in the circumferential direction A of the electric wire 20 as it moves away from the base 13. The angle α of the strength reinforcing portion 14 extending outward from the base 13 is preferably an angle of 5° or more and 90° or less from the base 13.

[0041] As shown in Figs. 1, 2, and 5, the shape of the portion of the first high rigidity portion 12a and the second high rigidity portion 12b (high rigidity portion 12) facing the electric wire 20 (hereinafter referred to as the facing portion 15) is rounded so as to fit the periphery of the electric wire 20. In this embodiment, the shape of the facing portion 15 is a shape that fits along the outer circumferential surface of the electric wire 20. A shape that fits along the outer circumferential surface of the electric wire 20 means that the radius of curvature of the face of the facing portion 15 is approximately the same as or slightly larger than the radius of curvature of the electric wire 20. The radius of curvature of the face of the facing portion 15 is preferably 1 to 1.2 times the radius of curvature of the electric wire 20.

[0042] <Process of holding the electric wire 20 by the electric wire holder 1> FIG. 5 is an explanatory diagram showing the state of the electric wire holding portion 10 before and after crimping.

[0043] When the electric wire 20 is held by the electric wire holder 1, first, the electric wire 20 is inserted from the outside to the inside of the electric wire holding portion 10, as shown by the arrow in FIG. 2. In this state in which the electric wire 20 is held by the electric wire holding portion 10, the electric wire holding portion 10 and the electric wire 20 are crimped by the crimping tool 40, as shown in FIG. 5. More specifically, first, the lower support portion 41 of the crimping tool 40 supports a part of the first extension portion 31 and the first high-rigidity portion 12a. In addition, the movable pressing portion 42 of the crimping tool 40 presses the second high-rigidity portion 12b and the second extension portion 32 so as to approach the first high-rigidity portion 12a. By such pressing of the movable pressing portion 42, the second high-rigidity portion 12b and the second extension portion 32 move in the direction of the first high-rigidity portion 12a. In this way, the electric wire holding portion 10 is deformed so as to hold the electric wire 20. At this time, since the rigidity of the first high rigidity portion 12a and the second high rigidity portion 12b is higher than the rigidity of the low rigidity portion 11, mainly the low rigidity portion 11 is deformed. Here, the shape of the facing portion 15 of the first high rigidity portion 12a and the second high rigidity portion 12b facing the electric wire 20 is a shape that follows the circumference of the electric wire 20. Therefore, as shown in FIG. 5, even if the electric wire holding portion 10 and the electric wire 20 are crimped, the deformation of the electric wire 20 due to the influence of the deformation of the electric wire holding portion 10 is suppressed. As a result, the electric wire holder 1 of this embodiment reduces the stress on the electric wire 20. In this manner, the electric wire 20 is held by the electric wire holding portion 10 by being crimped together with the electric wire holding portion 10. The electric wire holder 1 of this embodiment can be crimped by the same crimping tool 40 as the conventional electric wire holder. Therefore, the electric wire holder 1 of this embodiment reduces the stress on the electric wire 20 while suppressing an increase in manufacturing cost.

[0044] FIG. 6 is a cross-sectional view of the electric wire 20 showing the stress applied to the electric wire 20 after the electric wire holder and the electric wire are crimped using a conventional electric wire holder. FIG. 7 is a cross-sectional view of the electric wire 20 showing the stress applied to the electric wire 20 after the electric wire holder 1 is crimped to the electric wire 20 using the electric wire holder 1 of the present embodiment. In FIG. 6 and FIG. 7, the shading of the color in the electric wire 20 indicates the magnitude of the stress. The darker parts are parts with higher stress, and the lighter parts are parts with lower stress. As shown in FIG. 6 and FIG. 7, the electric wire 20 has a plurality of conductors 21 inside. The electric wire 20 in FIG. 6 is deformed more greatly than the electric wire 20 in FIG. 7. Therefore, the conductors 21 inside the electric wire 20 are also deformed more greatly. The inside of the conductor 21 in FIG. 6 is darker in color than the inside of the conductor 21 in FIG. 7. That is, it can be seen that the inside of the conductor 21 in FIG. 6 is subjected to a higher stress than the inside of the conductor 21 in FIG. 7. Furthermore, a CAE (Computer Aided Engineering) analysis revealed that a stress of 37 MPa was applied in the darkest part shown in Figure 6. It was also found that a stress of only 4 MPa was applied in the darkest part shown in Figure 7.

[0045] From the above, it can be seen that according to the wire holder 1 of the present embodiment, the stress applied to the wires 20 is reduced.

[0046] <Advantages of the First Embodiment> According to the electric wire holder 1 configured as described above, the electric wire holder 1 holds the electric wire 20, and is formed from a single metal plate and includes the electric wire holding portion 10 that holds the electric wire 20. The electric wire holding portion 10 includes the low rigidity portion 11 and the first and second high rigidity portions 12a and 12b that have a higher rigidity than the low rigidity portion 11. The low rigidity portion 11 is located between the first and second high rigidity portions 12a and 12b. When the electric wire 20 is held by the electric wire holder 1, the electric wire holding portion 10 is deformed by the application of force to the electric wire holding portion 10 by the crimping tool 40. In this case, the low rigidity portion 11 mainly deforms, and the first and second high rigidity portions 12a and 12b do not deform much. By providing the low rigidity portion 11 and the high rigidity portion 12, it is easy to determine the portion of the electric wire holding portion 10 that mainly deforms (the low rigidity portion 11) and the portion that mainly does not deform (the high rigidity portion 12). Therefore, the shape of the electric wire holding portion 10 after crimping can be easily controlled, and the stress applied to the electric wire 20 from the electric wire holding portion 10 can be reduced.

[0047] Furthermore, the shape of the facing portion 15 of the first high rigidity portion 12a and the second high rigidity portion 12b facing the electric wire 20 is a shape that follows the outer circumferential surface of the electric wire 20. Since the first high rigidity portion 12a and the second high rigidity portion 12b are not easily deformed, the shape of the facing portion 15 of the first high rigidity portion 12a and the second high rigidity portion 12b is maintained in a shape that follows the outer circumferential surface of the electric wire 20 even after the electric wire holding portion 10 and the electric wire 20 are crimped. This reduces the stress applied to the electric wire 20 from the electric wire holding portion 10.

[0048] Moreover, the low rigidity portion 11 is shorter than the first high rigidity portion 12a and the second high rigidity portion 12b in the longitudinal direction L of the electric wire 20. As a result, the rigidity of the low rigidity portion 11 is lower than the rigidity of the first high rigidity portion 12a and the rigidity of the second high rigidity portion 12b. As a result, the low rigidity portion 11 is more easily deformed than the first high rigidity portion 12a and the second high rigidity portion 12b. In other words, since there is such a difference in shape between the low rigidity portion 11 and the high rigidity portion 12, it is considered that the low rigidity portion 11 has a smaller moment of inertia and a smaller section modulus than the first high rigidity portion 12a and the second high rigidity portion 12b.

[0049] Further, each of the first high-rigidity portion 12a and the second high-rigidity portion 12b has a base portion 13 disposed along the electric wire 20 in the longitudinal direction L of the electric wire 20, and a strength reinforcement portion 14 connected to the end portion 13a in the longitudinal direction L of the electric wire 20 at the base portion 13, and the strength reinforcement portion 14 is extended to spread outward in the circumferential direction A of the electric wire 20. In this way, the first high-rigidity portion 12a and the second high-rigidity portion 12b have a cross section when cut along the longitudinal direction L of the electric wire 20 bent at the connecting portion between the base portion 13 and the strength reinforcement portion 14. When bent in the longitudinal direction L in this way, it is considered that the rigidity is higher than when not bent. This makes the first high-rigidity portion 12a and the second high-rigidity portion 12b even more difficult to deform.

[0050] Moreover, the strength reinforcing portion 14 is extended and spreads outward in the circumferential direction A of the electric wire as it moves away from the base portion 13. This suppresses contact between the end portion of the electric wire 20 in the longitudinal direction L of the electric wire 20 and the strength reinforcing portion 14 (electric wire holding portion 10).

[0051] Moreover, the electric wire holding portion 10 includes a single low-rigidity portion 11. This allows the electric wire holding portion 10 to have a single portion that is easily bent. This makes it easier to control the shape of the electric wire holding portion 10 when holding the electric wire 20. This further reduces the stress applied to the electric wire 20 from the electric wire holding portion 10.

[0052] The wire holding portion 10 further includes a first extension portion 31 that is connected to the end portion 10a of the electric wire 20 in the circumferential direction A and extends outward in the circumferential direction A of the electric wire 20. The wire holding portion 10 further includes a second extension portion 32 that is connected to the end portion 10b of the electric wire 20 in the circumferential direction A of the electric wire 20 and extends outward in the circumferential direction A of the electric wire 20. This suppresses contact between the end portion of the electric wire 20 in the circumferential direction A and the electric wire 20 at the wire holding portion 10, the first extension portion 31, and the second extension portion 32.

[0053] According to the electric wire 20 with a wire holder configured as described above, the electric wire 20 with the wire holder includes the electric wire 20 and the electric wire holder 1 that holds the electric wire 20, the electric wire holder 1 is formed from a single metal plate and includes an electric wire holding portion 10 that holds the electric wire 20, the electric wire holding portion 10 has a low rigidity portion 11 and a first high rigidity portion 12a and a second high rigidity portion 12b that have rigidity higher than that of the low rigidity portion 11, the low rigidity portion 11 is located between the first high rigidity portion 12a and the second high rigidity portion 12b, and the electric wire 20 is held by the electric wire holding portion 10 by being crimped together with the electric wire holding portion 10. As a result, when the electric wire 20 is held, a force is applied to the electric wire holding portion 10 by the crimping tool 40, and the electric wire holding portion 10 is deformed. In this case, the low rigidity portion 11 mainly deforms, and the first high rigidity portion 12a and the second high rigidity portion 12b do not deform much. By providing the low rigidity portion 11 and the high rigidity portion 12, it is easy to determine the portion of the electric wire holding portion 10 that mainly deforms (the low rigidity portion 11) and the portion that mainly does not deform (the high rigidity portion 12). Therefore, the shape of the electric wire holding portion 10 after crimping is easily controlled. Therefore, the stress applied from the electric wire holding portion 10 to the electric wire 20 is reduced.

[0054] [Second embodiment] <Configuration of the second embodiment> Next, an electric wire holder 201 in a second embodiment will be described. FIG. 8 is a perspective view showing an electric wire holder 201 in the second embodiment. In FIG. 8, the electric wire 20 is shown by a virtual line. As shown in FIG. 8, the electric wire holder 201 has a low-rigidity portion 211 instead of the low-rigidity portion 11. In addition, the electric wire holder 201 has a first high-rigidity portion 212a and a second high-rigidity portion 212b instead of the first high-rigidity portion 12a and the second high-rigidity portion 12b. In the low-rigidity portion 211 of this embodiment, a hole 211a is formed in the middle portion in the longitudinal direction L of the electric wire 20. The hole 211a may be a through hole or a bottomed hole. In addition, the first high-rigidity portion 212a and the second high-rigidity portion 212b of this embodiment do not have a strength reinforcing portion 14 as in the electric wire holder 1 in the first embodiment. This is because the holes 211 a are formed in the low rigidity portions 211 , and therefore the low rigidity portions 211 have lower rigidity than the high rigidity portions 12 even in the case of the high rigidity portions 12 not having the strength reinforcing portions 14 .

[0055] <Effects of the second embodiment> According to the electric wire holder 201 configured as above, the low rigidity portion 211 has a hole 211a formed in a middle portion in the longitudinal direction L of the electric wire 20. This makes the low rigidity portion 211 less rigid than the high rigidity portion 212. Therefore, the low rigidity portion 211 is more easily deformed than the high rigidity portion 212.

[0056] [Third embodiment] <Configuration of the third embodiment> Next, an electric wire 20 with an electric wire holder 301 in a third embodiment will be described. Fig. 9 is a front view showing the electric wire holder 301 of the third embodiment together with the electric wire 20. Fig. 10 is a cross-sectional view showing the electric wire 20 held by the electric wire holder 301 of the third embodiment. Fig. 11 is a front view showing the state in which the electric wire 20 is held by the electric wire holder 301 of the third embodiment. In Figs. 9 and 11, the electric wire 20 is shown in cross section.

[0057] In this specification, the electric wire 20 includes one or more conductor wires 21 and an insulating coating that coats the conductor wires 21. The electric wire 20 in this embodiment further includes one or more coating parts 22, 23, 24 (see Figs. 6, 7, and 9). The coating part 22 is an insulating coating having insulating properties. However, the coating parts 23, 24 may be members having insulating properties or members having no insulating properties. The outermost coating part among the coating parts 22, 23, 24 is referred to as the outermost coating part. For example, the outermost coating part 24 is made of ethylene propylene rubber. The outermost coating part 24 protects the inner members of the electric wire 20 excluding the outermost coating part 24.

[0058] 9, the electric wire holder 301 includes an electric wire holding portion 310 that holds the electric wire 20. In the present embodiment, the electric wire holding portion 310 also includes a low rigidity portion 311, and a first high rigidity portion 312a and a second high rigidity portion 312b having higher rigidity than the low rigidity portion 311. A gap 316 is formed between the first high rigidity portion 312a and the second high rigidity portion 312b (on the side not adjacent to the low rigidity portion 311).

[0059] Also in this embodiment, the wire holder 301 further includes an extension portion 330 connected to the wire holding portion 310. The extension portion 330 is connected to the ends 312c, 312d of the wire 20 in the circumferential direction A of the wire holding portion 310. The extension portion 330 extends outward in the circumferential direction A of the wire 20. Also in this embodiment, the extension portion 330 includes a first extension portion 331 and a second extension portion 332. The first extension portion 331 is connected to the end 312c of the first high rigidity portion 312a on the gap 316 side. Similarly, the second extension portion 332 is connected to the end 312d of the second high rigidity portion 312b on the gap 316 side. A first flat portion 331a is formed in the first extension portion 331 on the side facing the second extension portion 332. The second extension portion 332 has a second flat portion 332a formed on the side facing the first extension portion 331. The extension portion 330 (first extension portion 331, second extension portion 332) in this embodiment has the same configuration and function as the extension portion 30 (first extension portion 31, second extension portion 32) in the first embodiment, and therefore will not be described here.

[0060] As shown in FIG. 10 , the electric wire 20 has a covering portion 20A including an outermost covering portion 24. In this embodiment, the electric wire 20 further has an inner covering portion 23 inside the outermost covering portion 24. The electric wire 20 may also have one or more covering portions inside the inner covering portion 23. The outermost covering portion 24 may be a tubular insulating covering that protects the conductor disposed therein. The outermost covering portion 24 may be a member that covers only a portion of the conductor held by the electric wire holder 301. In this embodiment, the inner diameter R1 of the outermost covering portion 24 is larger than the outer diameter R2 of the inner covering portion 23.

[0061] In this embodiment, as shown in FIG. 9, a part of the outermost covering portion 24 is sandwiched between an end 312c of the first high rigidity portion 312a on the gap 316 side and an end 312d of the second high rigidity portion 312b on the gap 316 side. In this embodiment, a part of the outermost covering portion 24 is sandwiched between the first extension portion 331 and the second extension portion 332. Preferably, the outermost covering portion 24 protruding from the gap 316 is in surface contact with the first flat portion 331a and the second flat portion 332a. Because of the surface contact, the contact area is larger than when the first flat portion 331a and the second flat portion 332a are in point contact. Therefore, a part of the outermost covering portion 24 is firmly sandwiched between the first extension portion 331 and the second extension portion 332, and the holding force of the electric wire 20 by the electric wire holder 301 is improved. In this way, since the holding force of the electric wire 20 is improved by the first extension portion 331 and the second extension portion 332 regardless of the holding force of the electric wire holding portion 310 to hold the electric wire 20, it is possible to reduce the stress load on the electric wire 20 by the electric wire holding portion 310. In other words, the concentration of stress on the electric wire 20 from the electric wire holder 301 is alleviated. Note that even when the outermost covering portion 24 is in surface contact with at least one of the first flat portion 331a and the second flat portion 332a, it is considered that the holding force of the electric wire holder 301 to the electric wire 20 is improved.

[0062] In this embodiment, the first flat portion 331a and the second flat portion 332a are formed, but instead of the first flat portion 331a or the second flat portion 332a, the first extension portion 331 may have wavy unevenness formed on the side facing the second extension portion 332, or may have spherical unevenness formed. Similarly, the second extension portion 332 may have wavy unevenness formed on the side facing the first extension portion 331, or may have spherical unevenness or other shapes.

[0063] In the present embodiment, the radius of curvature rA of the surface 315a of the first high-rigidity portion 312a facing the electric wire 20 is smaller than the radius r1 of the outermost covering portion 24 before being held by the electric wire holder 301.

[0064] With this setting, as shown in FIG. 9, when the electric wire 20 is inserted into the electric wire holder 301, the outermost covering portion 24 is pressed by the surface 315a. Then, a part of the excess length of the outermost covering portion 24 formed between the outermost covering portion 24 and the inner covering portion 23 is pushed out from the surface 315a. As a result, a part of the excess length of the outermost covering portion 24 formed between the outermost covering portion 24 and the inner covering portion 23 becomes loose and protrudes from the end portion 312c. Then, a part of the excess length of the outermost covering portion 24 described above is placed on the first flat portion 331a. In this state, as shown in FIG. 11, the electric wire holder 310 and the electric wire 20 are crimped by the crimping tool 40. Then, a part of the outermost covering portion 24 is clamped between the end portion 312c and the end portion 312d on the gap 316 side. Also, a part of the outermost covering portion 24 is clamped between the first extension portion 331 and the second extension portion 332. At this time, a part of the outermost covering portion 24 is sandwiched between the first extension portion 331 and the second extension portion 332 in a folded manner. The part of the outermost covering portion 24 is sandwiched between the first extension portion 331 and the second extension portion 332 such that the inner circumferential surfaces 24a of the outermost covering portion 24 are in contact with each other. In this way, the holding force of the wire holder 301 for holding the wire 20 is improved.

[0065] In this embodiment, the radius of curvature rA of the surface 315a is different from the radius of curvature rB of the surface 315b. Preferably, the radius of curvature rA of the surface 315a is set smaller than the radius of curvature rB of the surface 315b. As a result, when the electric wire 20 is inserted into the electric wire holder 301, the outermost covering portion 24 is pressed by the surface 315a. Then, a part of the excess length between the outermost covering portion 24 and the inner covering portion 23 is pushed out from the surface 315a. As a result, a part of the excess length between the outermost covering portion 24 and the inner covering portion 23 is loosened and protrudes from the end portion 312c. Then, a part of the excess length between the outermost covering portion 24 and the inner covering portion 23 is placed on the first flat portion 331a. In this state, as shown in FIG. 11, the electric wire holding portion 310 and the electric wire 20 are crimped by the crimping tool 40. As a result, the outermost covering portion 24 is not enclosed by surface 315b, and a part of the outermost covering portion 24 is pushed out to surface 315b and protrudes from gap 316. In this manner, a large portion of the excess length of the outermost covering portion 24 between it and the inner covering portion 23 protrudes toward gap 316. In this manner, the excess length of the outermost covering portion 24 between it and the inner covering portion 23 is clamped between the first extension portion 331 and the second extension portion 332. This improves the holding force of the wire holder 301 on the wire 20.

[0066] In this embodiment, the radius of curvature rA of the surface 315a is set to be smaller than the radius r1 of the outermost covering portion 24 before being held by the wire holder 301, but is not limited to this. The radius of curvature rB of the surface 315b may be set to be larger or smaller than the radius r1 of the outermost covering portion 24 before being held by the wire holder 301. However, it is preferable that the radius of curvature rA, rB of at least one of the radius of curvature rA of the surface 315a and the radius of curvature rB of the surface 315b is set to be smaller than the radius r1 of the outermost covering portion 24 before being held by the wire holder 301. It is also preferable that the radii of curvature rA, rB of the surfaces 315a, 315b that support the electric wire 20 in an uncrimped state are set to be smaller than the radius r1 of the outermost covering portion 24 before being held by the wire holder 301.

[0067] <Effects of the third embodiment> According to the electric wire 20 (electric wire with electric wire holder) having the electric wire holder 301 configured as above, a part of the outermost covering 24 is clamped between the end 312c of the first high rigidity portion 312a on the gap 316 side and the end 312d of the second high rigidity portion 312b on the gap 316 side, so that the outermost covering 24 of the electric wire 20 is easily clamped between the end 312c and the end 312d. Therefore, according to the electric wire with electric wire holder of the present disclosure, a part of the outermost covering 24 is firmly clamped between the end 312c and the end 312d, and the holding force of the electric wire 20 by the electric wire holder 301 is improved. In this way, the holding force of the electric wire 20 is improved by the first extension portion 331 and the second extension portion 332 regardless of the holding force of the electric wire 20 by the electric wire holding portion 310, so that it is possible to reduce the stress burden on the electric wire 20 by the electric wire holding portion 310. Therefore, the wire holder 301 reduces the stress applied to the wire 20. As a specific experimental result, the wire with wire holder of the present disclosure maintains a standard value of holding force of 70 N or more while maintaining the compression ratio of the portion of the wire 20 excluding the outermost covering portion 24 at approximately 93% in the length dimension in the height direction. Also, the cross-sectional area is maintained at approximately 90%. Note that the compression ratio here refers to the ratio of the deformed shape to the original shape.

[0068] The wire 20 further includes a first extension portion 331 connected to an end portion 312c of the first high rigidity portion 312a on the gap 316 side, and a second extension portion 332 connected to an end portion 312d of the second high rigidity portion 312b on the gap 316 side, and a part of the outermost covering portion 24 is clamped between the first extension portion 331 and the second extension portion 332. As a result, the electric wire 20 is also held by the first extension portion 331 and the second extension portion 332, thereby further improving the holding force of the electric wire 20.

[0069] In addition, the first extension portion 331 has a first flat portion 331a formed on a side facing the second extension portion 332, and the second extension portion 332 has a second flat portion 332a formed on a side facing the first extension portion 331, and a part of the outermost covering portion 24 protruding from the gap 316 is in surface contact with at least one of the first flat portion 331a and the second flat portion 332a. Because of the surface contact, the contact area is larger than when the outermost covering portion 24 is in point contact with the first flat portion 331a and the second flat portion 332a, and therefore the part of the outermost covering portion 24 is firmly held between the first extension portion 331 and the second extension portion 332. This improves the holding force of the electric wire 20 by the electric wire holder 301. In this way, since the holding force of the electric wire 20 is improved by the first extension portion 331 and the second extension portion 332 regardless of the holding force of the electric wire holding portion 310 to hold the electric wire 20, it is possible to reduce the stress load on the electric wire 20 by the electric wire holding portion 310. In other words, the concentration of stress applied to the electric wire 20 from the electric wire holder 301 is alleviated. Note that even when the outermost covering portion 24 is in surface contact with at least one of the first flat portion 331a and the second flat portion 332a, the concentration of stress applied to the electric wire 20 from the electric wire holder 301 is thought to be alleviated.

[0070] In addition, the radius of curvature rA, rB of at least one of the surface 315a of the first high-rigidity portion 312a facing the electric wire 20 and the surface 315b of the second high-rigidity portion 312b facing the electric wire 20 is smaller than the radius of the outermost covering portion 24 before being held by the electric wire holder 301. As a result, when the electric wire 20 is inserted into the electric wire holder 301, the outermost covering portion 24 is pressed by the surface 315a. Then, a part of the outermost covering portion 24 is pushed out from the surface 315a. As a result, the slack of the outermost covering portion 24 formed between the outermost covering portion 24 and the inner covering portion 23 protrudes from the end portion 312c. In this state, the electric wire holding portion 310 and the electric wire 20 are crimped by the crimping tool 40. Then, a part of the outermost covering portion 24 is easily clamped by the end portion 312c and the end portion 312d on the gap 316 side. Also, a part of the outermost covering portion 24 is easily held between the first extension portion 331 and the second extension portion 332. In this way, a part of the outermost covering portion 24 is held between the end portion 312c and the end portion 312d on the gap 316 side, and is also held between the first extension portion 331 and the second extension portion 332, thereby improving the holding force of the wire holder 301 to hold the wire 20.

[0071] In addition, the radius of curvature rA of the surface 315a of the first high-rigidity portion 312a facing the electric wire 20 is different from the radius of curvature rB of the surface 315b of the second high-rigidity portion 312b facing the electric wire 20. For example, when the radius of curvature rB of the surface 315b is set to be larger than the radius of curvature rA of the surface 315a, the outermost covering portion 24 is pressed by the surface 315a when the electric wire 20 is inserted into the electric wire holder 301. Then, a part of the outermost covering portion 24 is pushed out from the surface 315a. As a result, the slack of the outermost covering portion 24 formed between the outermost covering portion 24 and the inner covering portion 23 protrudes from the end portion 312c. In this state, the electric wire holding portion 310 and the electric wire 20 are crimped by the crimping tool 40. Then, a part of the outermost covering portion 24 is easily clamped between the end portion 312c and the end portion 312d on the gap 316 side. Also, a part of the outermost covering portion 24 is easily held between the first extension portion 331 and the second extension portion 332. In this way, a part of the outermost covering portion 24 is held between the end portion 312c and the end portion 312d on the gap 316 side, and is also held between the first extension portion 331 and the second extension portion 332, thereby improving the holding force of the wire holder 301 to hold the wire 20.

[0072] The electric wire 20 further has an inner covering portion 23 inside the outermost covering portion 24, and the inner diameter of the outermost covering portion 24 is larger than the outer diameter of the inner covering portion 23. As a result, a part of the excess length of the outermost covering portion 24 formed between the outermost covering portion 24 and the inner covering portion 23 is pushed out from the surface 315a. As a result, a part of the excess length of the outermost covering portion 24 formed between the outermost covering portion 24 and the inner covering portion 23 is loosened and protrudes from the end portion 312c. Then, a part of the excess length of the outermost covering portion 24 described above is placed on the first flat portion 331a. In this state, the electric wire holding portion 310 and the electric wire 20 are crimped by the crimping tool 40. Then, a part of the outermost covering portion 24 is easily clamped by the end portion 312c and the end portion 312d on the gap 316 side. Also, a part of the outermost covering portion 24 is easily clamped by the first extension portion 331 and the second extension portion 332. In this manner, a portion of the outermost covering portion 24 is clamped between the ends 312c and 312d on the gap 316 side, and also between the first extension portion 331 and the second extension portion 332, thereby improving the holding force of the wire holder 301 on the wire 20.

[0073] [Fourth embodiment] <Configuration of the Fourth Embodiment> Next, an electric wire 20 with an electric wire holder 401 in the fourth embodiment will be described. Fig. 12 is a front view showing the electric wire holder 401 of the fourth embodiment together with the electric wire 20. Fig. 13 is a perspective view showing the electric wire holder 401 of the fourth embodiment.

[0074] In this embodiment, the wire holder 401 includes a wire holding portion 410, a first extension portion 331, and a second extension portion 332, similar to the wire holder 1 in the first embodiment. The first extension portion 331 and the second extension portion 332 have the same configuration and function as the first extension portion 31 and the second extension portion 32 in the first embodiment, and therefore a description thereof will be omitted here. In addition, the wire holding portion 410 of this embodiment does not have a low rigidity portion and a high rigidity portion. The other configuration is the same as the wire holding portion 310 of the third embodiment, and therefore a description thereof will be omitted here.

[0075] The electric wire holding portion 410 of this embodiment has substantially the same rigidity over the entirety. The electric wire holding portion 410 of this embodiment does not include a strength reinforcing portion 14 as in the electric wire holder 1 of the first embodiment. This prevents the rigidity from changing in only a portion of the electric wire holding portion 410. Note that the electric wire holding portion 410 may include a strength reinforcing portion 14 over the entirety in the circumferential direction A of the electric wire 20. This configuration also prevents the rigidity from changing in only a portion of the electric wire holding portion 410.

[0076] The electric wire holding portion 410 has a gap 416 along the axial direction (longitudinal direction L) of the electric wire 20. The first extension portion 431 and the second extension portion 432 are connected to ends 410a, 410b of the electric wire holding portion 410 adjacent to the gap 416.

[0077] 12, like the electric wire 20 of the third embodiment, the electric wire 20 of this embodiment has a covering portion including an outermost covering portion 24. Then, the electric wire holding portion 410 is crimped to the electric wire 20. As a result, the electric wire 20 is held by the electric wire holding portion 410. Also, a part of the outermost covering portion 24 is clamped between two ends 410a, 410b of the electric wire holding portion 410 on the gap 416 side.

[0078] Preferably, the minimum radius of curvature rC of the surface 415 of the electric wire holding part 410 facing the electric wire 20 is smaller than the radius r1 of the outermost covering portion 24 of the electric wire 20 before being crimped. By setting the radius of curvature rC in this manner, like the electric wire 20 of the third embodiment, a part of the outermost covering portion 24 is pushed out by the surface 415 and is likely to protrude from the gap 416. In this manner, the part of the outermost covering portion 24 protruding from the gap 416 is held between the two end parts 410a, 410b. Furthermore, in this embodiment, the part of the outermost covering portion 24 protruding from the gap 416 is held between the first extension portion 431 and the second extension portion 432.

[0079] <Effects of the Fourth Embodiment> With the electric wire 20 fitted with the wire holder 401 configured as above (electric wire with wire holder), a part of the outermost covering 24 is firmly clamped between the two ends 410a, 410b of the wire holding part on the gap 416 side, improving the holding force of the wire 20 by the wire holder 401. In this way, the holding force of the wire 20 is improved by the two ends 410a, 410b, regardless of the holding force of the wire holding part 410 on the wire 20, so that it is possible to reduce the stress load on the wire 20 by the wire holding part 410. Therefore, the wire holder 401 reduces the stress applied to the wire 20.

[0080] [Variations] In the above-described first embodiment, the strength reinforcing portion 14 is configured to extend and spread outward in the circumferential direction A of the electric wire 20 as it moves away from the base portion 13, but is not limited to such a configuration. The strength reinforcing portion 14 may be configured to extend along the longitudinal direction L of the electric wire 20, similar to the base portion 13. Even in such a configuration, the strength reinforcing portion 14 gives the high rigidity portion 12 higher rigidity than the low rigidity portion 11.

[0081] In the above-described embodiment, the wire holder 1, 201, 301, 401 is formed from a single metal plate including the extension portion 30, 330, 431, 432, but is not limited to this. The extension portion 30, 330, 431, 432 may be formed from a separate member, and then the extension portion 30, 330, 431, 432 may be connected to the wire holding portion 10, 210, 310, 410. Also, the extension portion 30, 330, 431, 432 may not be provided, and the wire 20 may be held only by the wire holding portion 10, 210, 310, 410.

[0082] In the above embodiment, the electric wire 20 is configured to include the conductor 21 and the covering portions 22, 23, and 24 that cover the conductor 21, but is not limited thereto. The electric wire 20 may be configured to include only the conductor 21 and the covering portion 22 that covers the conductor 21.

[0083] Furthermore, the configurations described in the above embodiments and modifications can be combined as appropriate as long as they are not mutually contradictory. [Explanation of symbols]

[0084] 1,201,301,401 Wire holder 10,210,310,410 Wire holding part 10a,10b,310c,310d,410a,410b End 11,211 Low rigidity part 11a 1st extension section 11b 2nd extension section 12,212 High rigidity part 12a,212a 1st high rigidity part 12b,212b Second high rigidity part 13 Base 13a End 14 Strength reinforcement 15 Targeted Part 20 Wire 20A,22,23,24 Covered part 21 Wire 23 Internal coating 24 outermost covering part 24a Inner circumference 30,330 Extension Department 31,331,431 First Extension Department 32,332,432 Second Extension 40 katana tools 41 Shimonobu 42 movable push button 211a Hole 315a,315b,415 faces 316,416 gap 331a First plane part 332a Second plane portion A Circumferential direction L Long hand direction (axis direction) P Yayin R1 inner diameter R2 Outside diameter X distance r1 Radius rA Radius of curvature rB Radius of curvature rC Radius of curvature α Angle

Claims

1. A wire holder for holding an electric wire, The electric wire holding portion is formed from a single metal plate and holds the electric wire, the electric wire holding portion has a low rigidity portion, and a first high rigidity portion and a second high rigidity portion having rigidity higher than that of the low rigidity portion, The low rigidity portion is located between the first high rigidity portion and the second high rigidity portion. Wire holder.

2. 2. The wire holder according to claim 1, The first high-rigidity portion and the second high-rigidity portion have a shape of a portion facing the electric wire that follows an outer circumferential surface of the electric wire. Wire holder.

3. The wire holder according to claim 1 or 2, The low rigidity portion is shorter than the first high rigidity portion and the second high rigidity portion in a longitudinal direction of the electric wire. Wire holder.

4. The wire holder according to claim 1 or 2, each of the first high-rigidity portion and the second high-rigidity portion has a base portion arranged along the electric wire in a longitudinal direction of the electric wire, and a strength reinforcing portion provided at the base portion and connected to an end portion of the electric wire in the longitudinal direction, The strength reinforcing portion is extended to spread outward in a circumferential direction of the electric wire. Wire holder.

5. The wire holder according to claim 4, The strength reinforcing portion is extended so as to expand outward in a circumferential direction of the electric wire as it moves away from the base portion. Wire holder.

6. The wire holder according to claim 1 or 2, The wire holding portion includes a single low rigidity portion. Wire holder.

7. The wire holder according to claim 1 or 2, The wire holding portion further includes an extension portion that is connected to an end portion of the wire in a circumferential direction and extends toward an outer side in the circumferential direction of the wire. Wire holder.

8. An electric wire with an electric wire holder, comprising: an electric wire; and an electric wire holder for holding the electric wire, The wire holder includes: The electric wire holding portion is formed from a single metal plate and holds the electric wire, the electric wire holding portion has a low rigidity portion, and a first high rigidity portion and a second high rigidity portion having rigidity higher than that of the low rigidity portion, the low rigidity portion is located between the first high rigidity portion and the second high rigidity portion, The electric wire is held by the electric wire holding portion by crimping the electric wire. Wire with wire holder.

9. The electric wire with the electric wire holder according to claim 8, A gap is formed between the first high-rigidity portion and the second high-rigidity portion, The electric wire has a coating portion including an outermost coating portion, a portion of the outermost coating is clamped between an end of the first high rigidity portion on the gap side and an end of the second high rigidity portion on the gap side.

10. The electric wire with the electric wire holder according to claim 9, A first extension portion connected to an end portion of the first high rigidity portion on the gap side; A second extension portion connected to an end portion of the second high rigidity portion on the gap side; Further equipped with A portion of the outermost coating is clamped between the first extension portion and the second extension portion.

11. The electric wire with the electric wire holder according to claim 10, The first extension portion has a first flat portion formed on a side facing the second extension portion, The second extension portion has a second flat portion formed on a side facing the first extension portion, The outermost coating portion protruding from the gap is in surface contact with at least one of the first flat portion and the second flat portion.

12. The electric wire with the electric wire holder according to claim 9 or 10, the radius of curvature of at least one of the surface of the first high rigidity portion facing the electric wire and the surface of the second high rigidity portion facing the electric wire is smaller than the radius of the outermost coating portion before being held by the electric wire holder.

13. The electric wire with the electric wire holder according to claim 9 or 10, the radius of curvature of a surface of the first high rigidity portion facing the electric wire is different from the radius of curvature of a surface of the second high rigidity portion facing the electric wire.

14. The electric wire with the electric wire holder according to claim 9 or 10, The electric wire further includes an inner coating portion inside the outermost coating portion, The inner diameter of the outermost coating portion is larger than the outer diameter of the inner coating portion.

15. An electric wire with an electric wire holder, comprising: an electric wire; and an electric wire holder for holding the electric wire, The electric wire holder is formed from a single metal plate and includes an electric wire holding portion that holds the electric wire, The electric wire holding portion has a gap along an axial direction of the electric wire, The electric wire is held by the electric wire holding portion by crimping the electric wire, The electric wire has a coating portion including an outermost coating portion, A part of the outermost coating is clamped between the two ends of the wire holding part on the gap side.

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