Connection terminal and method for fixing said connection terminal

Abstract

To provide a connection terminal that enables efficient connection work with a conductive component, and a fixing method for the same.SOLUTION: A connecting terminal (1) includes a mounting part (10), electrically connected to a wiring harness (50), a plate-shaped crimp terminal part (20), integrally formed with the mounting part, having a through-hole (25), the through-hole penetrating from a first surface on one side of the crimp terminal part to a second surface on the other side in the direction of the thickness of the crimp terminal part, and a washer part (30), integrally formed on the crimp terminal part and located between the first surface of the crimp terminal part and a conductive component (70) opposing the first surface.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a connection terminal and a method for fixing the connection terminal. [Background technology]

[0002] A connection terminal that is electrically connected to an electric device via a harness has been known in the art. Such a connection terminal is fixed to a conductive housing by a fastening part such as a screw, thereby electrically connecting the housing and the electric device.

[0003] For example, Patent Document 1 describes a method of attaching a crimp terminal to an end of a wiring member and screwing the crimp terminal to a frame to electrically connect the frame and the wiring member. Specifically, Patent Document 1 describes a structure in which a toothed washer is inserted between the crimp terminal and the frame to connect the crimp terminal and the frame (see FIG. 12). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2015-32397 A Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, in the structure described in Patent Document 1, a toothed washer is attached after a screw is inserted into a crimp terminal, and the screw is connected to a frame. This ensures electrical continuity between the crimp terminal and the frame by scraping the coating of the frame with the teeth of the toothed washer. However, in the structure described in Patent Document 1, since it is necessary to pass the toothed washer through the screw after the crimp terminal is passed through the screw, there is a risk that the toothed washer will fall off the screw during work, which can reduce workability.

[0006] The present invention has been made in consideration of such problems, and its object is to provide a connection terminal that enables efficient connection work with conductive parts, and a method for fixing the connection terminal. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, the connection terminal of the present invention is characterized in comprising an attachment portion electrically connected to a wire harness, a plate-shaped crimp terminal portion integrally formed with the attachment portion, the crimp terminal portion having a through hole penetrating in the thickness direction of the crimp terminal portion from a first surface on one side of the crimp terminal portion to a second surface on the other side, and a washer portion integrally formed with the crimp terminal portion, the washer portion being positioned between the first surface of the crimp terminal portion and a conductive component facing the first surface.

[0008] In one embodiment of the connection terminal of the present invention, the washer portion is formed from a plurality of tooth portions integrally formed with the inner contour portion of the crimp terminal portion defined by the through hole, and the tooth portions have a first tooth including a first protrusion portion that protrudes beyond the first surface of the crimp terminal portion to the one side of the crimp terminal portion.

[0009] In the connection terminal according to one aspect of the present invention, the tooth portion has a second tooth including a second protruding portion that protrudes beyond the second surface of the crimp terminal portion toward the other side of the crimp terminal portion.

[0010] In one embodiment of the connection terminal of the present invention, the washer portion has an annular base portion fixed to the first surface of the crimp terminal portion so as to surround the through hole, and a plurality of teeth portion integrally formed with the base and extending toward the conductive component.

[0011] In the connection terminal according to one aspect of the present invention, the washer portion is formed as a spring washer, and the washer portion is fixed to the first surface of the crimp terminal portion so as to surround the through hole.

[0012] In the connection terminal according to one aspect of the present invention, the washer portion is fixed to the first surface of the crimp terminal portion by ultrasonic welding, laser fusion, or spot welding.

[0013] The method for fixing a connection terminal according to the present invention is a method for fixing a connection terminal as described above, characterized in that it comprises a first step of aligning the connection terminal with the conductive part so that the through hole of the crimp terminal portion communicates with the engaging hole of the conductive part and the washer portion contacts the conductive part, a second step after the first step of inserting a fastening member into the through hole of the crimp terminal portion, and a third step after the second step of screwing the fastening member into the engaging hole of the conductive part. Effect of the Invention

[0014] The connection terminal according to the present invention includes a washer portion integrally formed with the crimp terminal portion, the washer portion being located between a first surface of the crimp terminal portion and a conductive part facing the first surface. Since the washer portion is integrally formed with the crimp terminal portion, when the connection terminal is fixed to the conductive part using a fastening member such as a screw, the washer portion can be prevented from falling off the screw or the like, and thus the connection terminal and the conductive part can be efficiently connected. Furthermore, since the washer portion is disposed between the crimp terminal portion and the conductive part, the fastening force of the fastening member such as a screw can be reliably transmitted to the conductive part through the washer portion, and thus the crimp terminal and the conductive part can be more firmly electrically connected via the washer portion.

[0015] The method for fixing the connection terminal according to the present invention is the above-mentioned method for fixing the connection terminal, and includes a first step of aligning the connection terminal with the conductive part so that the through hole of the crimp terminal communicates with the engagement hole of the conductive part and the washer portion contacts the conductive part, a second step of inserting a fastening member into the through hole of the crimp terminal, and a third step of screwing the fastening member into the engagement hole of the conductive part. In this way, the connection terminal, the washer portion of which is integrally formed with the crimp terminal in advance, is aligned with the conductive part, and then the connection terminal is fixed to the conductive part using the fastening member, so that the washer portion can be prevented from falling off the fastening member during the fixing operation. In addition, the operation of aligning the washer portion with the crimp terminal can be omitted, so that the fixing operation can be performed efficiently. This allows the connection terminal and the conductive part to be connected efficiently. Furthermore, since the fastening member is screwed into the engaging hole of the conductive part with the washer portion positioned between the crimp terminal portion and the conductive part, the fastening force of the fastening member can be reliably transmitted to the conductive part through the washer portion, thereby enabling a more solid electrical connection between the crimp terminal and the conductive part via the washer portion. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a perspective view showing a connection terminal according to the first embodiment. [Diagram 2] FIG. 2 is a side view showing the connection terminal of FIG. 1 as viewed from the lateral direction. [Diagram 3] FIG. 3 is a perspective view showing a state in which the connection terminal of FIG. 1 is fixed to a conductive part by using a screw. [Figure 4] FIG. 4 is a cross-sectional view taken along the line AA shown in FIG. [Diagram 5] FIG. 5 is a perspective view showing a connection terminal according to the second embodiment. [Figure 6] FIG. 6 is a side view showing the connection terminal of FIG. 5 as viewed from the lateral direction. [Figure 7] FIG. 7 is a perspective view showing a connection terminal according to the third embodiment. [Figure 8] FIG. 8 is a side view showing the connection terminal of FIG. 7 as viewed from the lateral direction. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] First Embodiment An embodiment of a connection terminal 1 embodying the present invention will be described. Fig. 1 is a perspective view showing the connection terminal 1 according to the first embodiment. Fig. 2 is a side view showing the connection terminal 1 of Fig. 1 as viewed from the lateral direction. Fig. 3 is a perspective view showing the connection terminal 1 of Fig. 1 fixed to a conductive part 70 by using a screw 80. Fig. 4 is a cross-sectional view taken along line AA shown in Fig. 3.

[0018] For ease of explanation, the thickness direction of the crimp terminal portion 20 of the connection terminal 1 is defined as the up-down direction. Specifically, as shown in Fig. 2, in the connection terminal 1, the side where the attachment portion 10 protrudes from the crimp terminal portion 20 is defined as the upper side, and the opposite side is defined as the lower side. In addition, in the connection terminal 1, the side where the attachment portion 10 is provided is defined as the rear side, and the side where the fixing portion 22 is provided is defined as the front side. Hereinafter, "upper", "lower", "front" and "rear" shown in each figure are all based on the above definitions.

[0019] 1 and 2, the connection terminal 1 includes an attachment portion 10, a crimp terminal portion 20 disposed in front of the attachment portion 10, and a washer portion 30 provided on the crimp terminal portion 20. The connection terminal 1 is fabricated by appropriately processing (bending, pressing, etc.) a flat metal member having electrical conductivity (e.g., a copper member). Note that the connection terminal 1 may be one in which the attachment portion 10 and the crimp terminal portion 20 are formed from a single piece of copper member, or the attachment portion 10 and the crimp terminal portion 20 are prepared separately and joined by welding, etc.

[0020] As shown in Fig. 3 and Fig. 4, the attachment portion 10 is a portion electrically connected to the wire harness 50. Specifically, the wire harness 50 is formed such that an insulating portion 52 having insulating properties surrounds a conductive core wire 51, and in a use state, a part of the insulating portion 52 is cut away to expose the core wire 51. The attachment portion 10 is fixed to the wire harness 50 by tightening the core wire 51 of the wire harness 50. As a result, an electrical connection is formed between the attachment portion 10 of the connection terminal 1 and the core wire 51 of the wire harness 50. Note that the wire harness 50 is not shown in Figs. 1 and 2.

[0021] As shown in Figs. 1 and 2, the crimp terminal part 20 is integrally formed with the mounting part 10. Specifically, the crimp terminal part 20 is formed by appropriately processing one copper plate, and includes a root part 21 connected to the front end part 11 of the mounting part 10, and a fixing part 22 disposed in front of the root part 21. The root part 21 is a part formed in a rectangular or approximately rectangular shape in a plan view. The fixing part 22 is a part having an outer contour part 26 that is annular or approximately annular in a plan view. In addition, the crimp terminal part 20 has a through hole 25 that penetrates from a lower surface 23 (first surface) on the lower side (one side) of the crimp terminal part 20 to an upper surface 24 (second surface) on the upper side (other side) in the thickness direction (vertical direction) of the crimp terminal part 20. Specifically, the through hole 25 is a hole that passes through the fixing portion 22 of the crimp terminal portion 20 in the vertical direction, and defines an inner contour portion 27 in a circular or approximately circular shape in the fixing portion 22 .

[0022] As shown in FIG. 1 and FIG. 2, the washer portion 30 is integrally formed with the crimp terminal portion 20. Specifically, the washer portion 30 is formed of a plurality of teeth 31 integrally formed with the inner contour portion 27 of the crimp terminal portion 20 defined by the through hole 25. The teeth 31 have a first tooth 32 including a first protruding portion 34 that protrudes to the lower side of the crimp terminal portion 20 beyond the lower surface 23 of the crimp terminal portion 20. The first tooth 32 includes a first base portion 33 that extends inward from the inner contour portion 27 of the fixing portion 22, and the first protruding portion 34 protrudes downward from the lower side of the first base portion 33. The first base portion 33 is formed flush or approximately flush with the lower surface 23 of the fixing portion 22, and is formed to be equal or approximately equal to the thickness of the fixing portion 22. Further, the tooth portion 31 has a second tooth 35 including a second protruding portion 37 that protrudes above the crimp terminal portion 20 beyond the upper surface 24 of the crimp terminal portion 20. The second tooth 35 includes a second base portion 36 that extends inward from the inner contour portion 27 of the fixed portion 22, and the second protruding portion 37 protrudes upward from the upper side of the second base portion 36. The second base portion 36 is formed flush or approximately flush with the upper surface 24 of the fixed portion 22, and is formed to be equal to or approximately equal to the thickness of the fixed portion 22. The arrangement of the first tooth 32 and the second tooth 35 is not particularly limited, and the first tooth 32 and the second tooth 35 may or may not be alternately arranged along the inner contour portion 27. In addition, from the viewpoint of ease of viewing the drawings, numbers are attached only to the first base portion 33 and the first protruding portion 34, and to some of the second base portion 36 and the second protruding portion 37 in Figs. 1 and 2.

[0023] As shown in Figs. 3 and 4, the washer portion 30 is located between the lower surface 23 of the crimp terminal portion 20 and the conductive frame 70 as a conductive part facing the lower surface 23. Specifically, in a state where the connection terminal 1 is fixed to the conductive frame 70, the first protruding portion 34 of the first tooth 32 constituting the washer portion 30 is located between the lower surface 23 of the fixing portion 22 and the conductive frame 70. The method of forming the tooth portion 31 of the washer portion 30 is not particularly limited, and the tooth portion 31 can be formed, for example, by cutting when the connection terminal 1 is manufactured by processing (bending, pressing, etc.) a flat copper member. The tooth portion 31 and the crimp terminal portion 20 may be prepared separately, and the tooth portion 31 may be fixed to the fixing portion 22 of the crimp terminal portion 20 by welding, etc.

[0024] As shown in FIG. 4, the conductive frame 70 is formed with an engagement hole 71 that opens toward the upper side. The engagement hole 71 is formed with a female screw portion 72 that screws into a male screw portion 81 of a screw 80 serving as a fastening member. The engagement hole 71 does not need to have the female screw portion 72. In this case, the engagement hole 71 is formed by penetrating the conductive frame 70 in the vertical direction. Then, a bolt prepared in place of the screw 80 may be passed through the engagement hole 71 and the bolt may be fastened with a nut to fix the connection terminal 1 to the conductive frame 70. The conductive frame 70 is formed of, for example, stainless steel or aluminum, and may be coated with a metal oxide film for the purpose of preventing rust or the like.

[0025] When the connection terminal 1 configured as above is fixed to the conductive frame 70, first, the connection terminal 1 is aligned with the conductive frame 70 so that the through hole 25 of the crimp terminal portion 20 communicates with the engagement hole 71 of the conductive frame 70 and the first tooth 32 of the washer portion 30 contacts the conductive frame 70. Next, a screw 80 is inserted into the through hole 25 of the crimp terminal portion 20. Finally, the screw 80 is screwed into the engagement hole 71 of the conductive frame 70. In this way, the connection terminal 1 is electrically connected to an electric device (e.g., a board) via the wire harness 50 and is fixed to the conductive frame 70 by the screw 80. This allows the conductive frame 70 to be electrically connected to, for example, a board via the connection terminal 1. The connection terminal 1 may be one that forms an earth connection (i.e., ground) via the wire harness 50.

[0026] Next, the action and effect of the connection terminal 1 of the first embodiment will be described. As described above, the connection terminal 1 according to the first embodiment includes the washer portion 30 that is integrally formed with the crimp terminal portion 20 and is located between the lower surface 23 of the crimp terminal portion 20 and the conductive frame 70 facing the lower surface 23. Since the washer portion 30 is integrally formed with the crimp terminal portion 20, for example, when the connection terminal 1 is fixed to the conductive frame 70 using the screw 80, the washer portion 30 can be prevented from falling off the screw 80, and thus the connection terminal 1 and the conductive frame 70 can be efficiently connected. In addition, since the washer portion 30 is disposed between the crimp terminal portion 20 and the conductive frame 70, the fastening force of the screw 80 can be reliably transmitted to the conductive frame 70 through the washer portion 30, and thus the connection terminal 1 and the conductive frame 70 can be more firmly electrically connected through the washer portion 30.

[0027] According to the connection terminal 1 of the first embodiment, the washer portion 30 is formed of a plurality of teeth 31 integrally formed on the inner contour portion 27 of the crimp terminal portion 20 defined by the through hole 25, and the teeth 31 have a first tooth 32 including a first protruding portion 34 that protrudes below the crimp terminal portion 20 beyond the lower surface 23 of the crimp terminal portion 20. Therefore, when the connection terminal 1 is fixed to the conductive frame 70, the first protruding portion 34 of the first tooth 32 is located between the lower surface 23 of the fixing portion 22 and the conductive frame 70. Therefore, due to the fastening force of the screw 80 that fixes the connection terminal 1 to the conductive frame 70, the first protruding portion 34 exerts a predetermined spring force by being deformed flat and a predetermined frictional force by being bitten into the conductive frame 70. Therefore, the connection terminal 1 and the conductive frame 70 can be electrically connected more firmly via the first protruding portion 34, i.e., the washer portion 30.

[0028] Moreover, according to the connection terminal 1 according to the first embodiment, the tooth portion 31 has the second tooth 35 including the second protruding portion 37 that protrudes above the upper surface 24 of the crimp terminal portion 20. Therefore, when the connection terminal 1 is fixed to the conductive frame 70 using the screw 80, the second protruding portion 37 of the second tooth 35 is located between the upper surface 24 of the fixing portion 22 and the screw 80. Therefore, due to the fastening force of the screw 80 that fixes the connection terminal 1 to the conductive frame 70, the second protruding portion 37 exerts a predetermined spring force by being deformed flat and a predetermined frictional force by biting into the conductive frame 70. Therefore, the connection terminal 1 and the conductive frame 70 can be electrically connected more firmly via the second protruding portion 34, i.e., the washer portion 30.

[0029] The method for fixing the connection terminal 1 according to the first embodiment includes a first step of aligning the connection terminal 1 with the conductive frame 70 so that the through hole 25 of the crimp terminal portion 20 communicates with the engagement hole 71 of the conductive frame 70 and the washer portion 30 contacts the conductive frame 70, a second step of inserting a screw 80 into the through hole 25 of the crimp terminal portion 20, and a third step of screwing the screw 80 into the engagement hole 71 of the conductive frame 70. In this way, the connection terminal 1, in which the washer portion 30 is integrally formed with the crimp terminal portion 20 in advance, is aligned with the conductive frame 70, and then the connection terminal 1 is fixed to the conductive frame 70 using the screw 80. This makes it possible to prevent the washer portion 30 from falling off the screw 80 during the fixing operation. In addition, since the operation of aligning the washer portion 30 with the crimp terminal portion 20 can be omitted, the fixing operation can be performed efficiently. This allows the connection terminal 1 and the conductive frame 70 to be connected efficiently. Furthermore, since the screw 80 is screwed into the engagement hole 71 of the conductive frame 70 with the washer portion 30 positioned between the crimp terminal portion 20 and the conductive frame 70, the fastening force of the screw 80 can be reliably transmitted to the conductive frame 70 through the washer portion 30, thereby enabling a more solid electrical connection between the connection terminal 1 and the conductive frame 70 via the washer portion 30.

[0030] <Second embodiment> Next, an embodiment of a connection terminal 1a embodying the present invention will be described. Fig. 5 is a perspective view showing a connection terminal 1a according to a second embodiment. Fig. 6 is a side view showing the connection terminal 1a of Fig. 5 as viewed from the lateral direction.

[0031] The connection terminal 1a of the second embodiment differs from the connection terminal 1 of the first embodiment in that it has a washer portion 30a prepared separately from the crimp terminal portion 20. Hereinafter, components having the same or similar functions as the connection terminal 1 of the first embodiment will be denoted by the same reference numerals as the connection terminal 1, and descriptions thereof will be omitted, and only different portions will be described.

[0032] 5 and 6, the washer portion 30a has an annular base portion 38a fixed to the lower surface 23 of the crimp terminal portion 20 so as to surround the through hole 25, and a plurality of teeth portions 31a formed integrally with the base portion 38a and extending toward the conductive part 70. Specifically, the base portion 38a of the washer portion 30a is fixed to the lower surface 23 of the crimp terminal portion 20 by ultrasonic welding, laser fusion, or spot welding.

[0033] The base 38a is formed by appropriately processing a flat metal member (e.g., a copper member) and has an outer contour portion 40a that is annular or approximately annular in plan view. The base 38a also has a communication hole 41a that penetrates the base 38a in the thickness direction (vertical direction), and the communication hole 41a defines an inner contour portion 39a that is annular or approximately annular in the base 38a. The communication hole 41a is formed to communicate with the through hole 25 of the crimp terminal portion 20 in the vertical direction when the base 38a is fixed to the crimp terminal portion 20. When the base 38a is fixed to the crimp terminal portion 20, the outer contour portion 40a of the base 38a and the outer contour portion 26 of the crimp terminal portion 20 are flush with each other or approximately flush with each other, and the inner contour portion 39a of the base 38a and the inner contour portion 27 of the crimp terminal portion 20 are formed to be flush with each other or approximately flush with each other.

[0034] The tooth portion 31a is formed of a plurality of first teeth 32a integrally formed on the inner contour portion 39a of the base portion 38a defined by the communication hole 41a. The first teeth 32a are configured to include a first base portion 33a extending inward from the inner contour portion 39a of the base portion 38a, and a first protruding portion 34a protruding to the lower side of the base portion 38a beyond the lower surface 42a of the base portion 38a. The first protruding portion 34a protrudes downward from the lower side of the first base portion 33a. The first base portion 33a is formed flush or approximately flush with the lower surface 42a of the base portion 38a, and is formed to have the same or approximately the same thickness as the base portion 38a. In order to make the drawings easier to see, numbers are attached only to a part of the first base portion 33a and the first protruding portion 34a in Figs. 5 and 6.

[0035] The first tooth 32a of the tooth portion 31a constituting the washer portion 30a is located between the lower surface 42a of the base 38a and the conductive frame 70 facing the lower surface 42a. Specifically, in a state in which the connection terminal 1a is fixed to the conductive frame 70, the first protrusion 34a of the first tooth 32a is located between the lower surface 42a of the base 38a and the conductive frame 70. The method of forming the tooth portion 31a of the base 38a is not particularly limited, and the tooth portion 31a can be formed by, for example, cutting or the like. The tooth portion 31a and the base 38a may be prepared separately, and the tooth portion 31a may be fixed to the base 38a by welding or the like.

[0036] Next, the action and effect of the connection terminal 1a of the second embodiment will be described. As described above, according to the connection terminal 1a of the second embodiment, the washer portion 30a has an annular base portion 38a fixed to the lower surface 23 of the crimp terminal portion 20 so as to surround the through hole 25, and a plurality of teeth portions 31a formed integrally with the base portion 38a and extending toward the conductive part 70. Therefore, in a state in which the connection terminal 1a is fixed to the conductive frame 70, the first protrusion portion 34a of the first tooth 32a is located between the lower surface 42a of the base portion 38a and the conductive frame 70. Therefore, due to the fastening force of the screw 80 that fixes the connection terminal 1a to the conductive frame 70, the first protrusion portion 34a exerts a predetermined spring force by being deformed flat and a predetermined friction force by biting into the conductive frame 70. Therefore, the connection terminal 1a and the conductive frame 70 can be electrically connected more firmly via the first protrusion portion 34a, i.e., the washer portion 30a.

[0037] <Third embodiment> Next, an embodiment of a connection terminal 1b embodying the present invention will be described. Fig. 7 is a perspective view showing a connection terminal 1b according to a third embodiment. Fig. 8 is a side view showing the connection terminal 1b of Fig. 7 as viewed from the lateral direction.

[0038] The connection terminal 1b of the third embodiment differs from the connection terminal 1 of the first embodiment in that it has a washer portion 30b prepared separately from the crimp terminal portion 20. Hereinafter, configurations having the same or similar functions as the connection terminal 1 of the first embodiment will be denoted by the same reference numerals as the connection terminal 1, and descriptions thereof will be omitted, and only different portions will be described.

[0039] 7 and 8, the washer portion 30b is formed as a spring washer. The washer portion 30b is fixed to the lower surface 23 of the crimp terminal portion 20 so as to surround the through hole 25. Specifically, the washer portion 30b is fixed to the lower surface 23 of the crimp terminal portion 20 by ultrasonic welding, laser fusion, or spot welding. More specifically, the washer portion 30b is configured such that a portion thereof is fixed to the lower surface 23 of the crimp terminal portion 20.

[0040] As shown in FIG. 7, the washer portion 30b is formed by cutting a part of the circumference of a flat metal member (e.g., a copper member) formed in an annular or substantially annular shape. Furthermore, the washer portion 30b is formed by twisting in the vertical direction so that the other end face S2 is offset downward from the one end face S1. As a result, when the washer portion 30b is fixed to the crimp terminal portion 20, a predetermined range (e.g., a range of a semicircle) from the other end face S2 is held in a state of being raised from the lower surface 23 of the crimp terminal portion 20. The washer portion 30b has an outer contour portion 40b that is annular or substantially annular in plan view. The washer portion 30b also has a communication hole 41b that penetrates the washer portion 30b in the thickness direction (vertical direction), and the communication hole 41b defines an inner contour portion 39b that is annular or substantially annular in the washer portion 30b. The communication hole 41b is formed so as to communicate in the up-down direction with the through hole 25 of the crimp terminal portion 20 when the washer portion 30b is fixed to the crimp terminal portion 20. When a part of the washer portion 30b is fixed to the crimp terminal portion 20, the outer contour portion 40b of the washer portion 30b and the outer contour portion 26 of the crimp terminal portion 20 are flush with each other or approximately flush with each other, and the inner contour portion 39b of the washer portion 30b and the inner contour portion 27 of the crimp terminal portion 20 are flush with each other or approximately flush with each other.

[0041] Next, the action and effect of the connection terminal 1b of the third embodiment will be described. As described above, according to the connection terminal 1b of the third embodiment, the washer portion 30b is formed as a spring washer and is fixed to the lower surface 23 of the crimp terminal portion 20 so as to surround the through hole 25. Therefore, when the connection terminal 1b is fixed to the conductive frame 70, the washer portion 30b is located between the lower surface 23 of the crimp terminal portion 20 and the conductive frame 70. Therefore, due to the fastening force of the screw 80 that fixes the connection terminal 1b to the conductive frame 70, the washer portion 30b exerts a predetermined spring force by being deformed flat and a predetermined frictional force by biting into the conductive frame 70. Therefore, the connection terminal 1b and the conductive frame 70 can be electrically connected more firmly via the washer portion 30b.

[0042] Although the preferred embodiment has been described above, the present invention is not limited to the connection terminals 1, 1a, and 1b according to the above-mentioned embodiment, and includes all aspects included in the concept and scope of the present invention, and each configuration may be appropriately and selectively combined. For example, in the first embodiment, the washer portion 30 is described as a toothed washer of a so-called internal tooth type, but the washer portion 30 may be a toothed washer of a so-called external tooth type having teeth 31 on the outer contour portion 26. Also, the washer portion 30 may be a toothed washer of a so-called dish-shaped tooth type, or a toothed washer of an internal and external tooth type. Also, in the second embodiment, the first teeth 32a of the washer portion 30a are described as being provided on the inner contour portion 39a of the base portion 38a, but the first teeth 32a may be directly disposed on the lower surface 42a of the base portion 38a and extend downward from the lower surface 42a. Also, the shape, material, arrangement, size, etc. of each component in the above-mentioned embodiment may be appropriately changed according to the specific embodiment of the present invention. [Explanation of symbols]

[0043] 1,1a,1b Connection terminal 10 Mounting part 20 Crimp terminal part 23 Bottom surface (first surface) 24 Top surface (second surface) 25 Through hole 27 Inner Contour 30, 30a, 30b Washer part 31,31a Teeth 34,34a 1st protrusion 35 2nd tooth 37 Second protrusion 38a base 50 Wire Harness 70 Conductive frame (conductive equipment) 71 Engagement hole 80 Screws (fastening members)

Claims

1. A mounting portion electrically connected to the wire harness; a plate-shaped crimp terminal portion formed integrally with the mounting portion, the crimp terminal portion having a through hole penetrating in a thickness direction of the crimp terminal portion from a first surface on one side to a second surface on the other side; a washer portion integrally formed with the crimp terminal portion and positioned between the first surface of the crimp terminal portion and a conductive component facing the first surface, the washer portion is formed of a plurality of teeth integrally formed on an inner contour portion of the crimp terminal portion defined by the through hole, A connection terminal characterized in that the tooth portion has a first tooth including a first base portion having a thickness approximately equal to that of the crimp terminal portion, and a first protruding portion protruding from the first base portion beyond the first surface of the crimp terminal portion to one side of the crimp terminal portion, the first tooth being overlapped in the thickness direction.

2. The connection terminal according to claim 1 , wherein the tooth portion has a second tooth including a second protruding portion that protrudes beyond the second surface of the crimp terminal portion toward the other side of the crimp terminal portion.

3. A mounting portion electrically connected to the wire harness; a plate-shaped crimp terminal portion formed integrally with the mounting portion, the crimp terminal portion having a through hole penetrating in a thickness direction of the crimp terminal portion from a first surface on one side to a second surface on the other side; a washer portion fixed to the crimp terminal portion and positioned between the first surface of the crimp terminal portion and a conductive component facing the first surface, the washer portion has an annular base portion fixed to the first surface of the crimp terminal portion so as to surround the through hole, and a plurality of teeth portions integrally formed with the base portion and extending toward the conductive component, The tooth portion is a connection terminal having a first tooth such that a first base portion having a thickness approximately equal to that of the base portion and a first protruding portion protruding from the first base portion beyond the underside of the base portion and downward from the first base portion overlap in the thickness direction.

4. The connection terminal according to claim 3 , wherein the washer portion is fixed to the first surface of the crimp terminal portion by ultrasonic welding, laser fusion, or spot welding.

5. A method for fixing a connection terminal according to any one of claims 1 to 4, comprising the steps of: a first step of aligning the connection terminal with the conductive part such that the through hole of the crimp terminal portion communicates with an engagement hole of the conductive part and the washer portion contacts the conductive part; a second step of inserting a fastening member into the through hole of the crimp terminal portion after the first step; a third step of screwing the fastening member into the engaging hole of the conductive part after the second step.

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