JP2023045558A

JP2023045558A - ground terminal

Info

Publication number: JP2023045558A
Application number: JP2021154052A
Authority: JP
Inventors: 建彦上原; Tatsuhiko Uehara
Original assignee: Yazaki Corp
Current assignee: Yazaki Corp
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2023-04-03

Abstract

To provide a ground terminal capable of stably securing sure conduction between a first ground terminal and a second ground terminal even before bolt fastening and after bolt fastening.SOLUTION: A ground terminal 1 comprises: a first ground terminal 10 including a first terminal body 11, in which a bolt insertion hole 12 is opened, and a wire connection part 17 to which a ground wire 6 is connected; and a second ground terminal 20 including a second terminal body 21, in which a bolt insertion hole 22 is opened and which is overlapped and locked to the first terminal main body 11, and a wire connection part 27 to which the ground wire 6 is connected. The first terminal body 11 includes: locked portions 13 and 15 to which lock portions 23 and 25 formed in the second terminal body 21 are locked; and a projected indent 14 formed in the locked portion 13 and contacted to the lock portion 23. In a portion where the indent 14 is contacted in the lock portion 23 of the second terminal main body 21, a thin portion 24 is formed.SELECTED DRAWING: Figure 3

Description

本発明は、自動車の車体パネル等のアース用部材にボルト締めされて接地されるアース端子に関する。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground terminal that is grounded by being bolted to a grounding member such as a body panel of an automobile.

この種のアース端子として、特許文献１に開示されたものがある。このアース端子は、ボルト挿通孔と被差込部を有した第１アース端子と、ボルト挿通孔と被差込部に差し込まれる差込部を有した第２アース端子と、を備えている。そして、第１アース端子の被差込部に第２アース端子の差込部を差し込んで係止させ、第１アース端子に第２アース端子が重ね合わされた状態で、ボルト締結にてアース用部材に固定されてアースが取られる。 A ground terminal of this type is disclosed in Patent Document 1. This ground terminal includes a first ground terminal having a bolt insertion hole and an insertion portion, and a second ground terminal having an insertion portion to be inserted into the bolt insertion hole and the insertion portion. Then, the insertion portion of the second ground terminal is inserted into the insertion portion of the first ground terminal and locked, and in a state where the second ground terminal is superimposed on the first ground terminal, the grounding member is fastened with a bolt. is fixed and grounded.

特開２０１４－２９８９号公報JP 2014-2989 A

前記従来のアース端子において、第１アース端子と第２アース端子の通電状態を確保するために、第１アース端子の被差込部の裏面に突起状の接点となるインデントを設けることが考えられる。この場合、ボルト締結時にインデントの押圧により差込部が撓み、これにより、接触圧が発生して導通性が確保されるが、ボルト締結時にインデントが潰れ、ボルト緩み時に、インデントと差込部にクリアランスが発生して抵抗値の上昇が懸念される。 In the above-described conventional ground terminal, in order to ensure the energization state between the first ground terminal and the second ground terminal, it is conceivable to provide an indent that serves as a projecting contact on the back surface of the insertion portion of the first ground terminal. . In this case, when the bolt is tightened, the insertion part bends due to the pressure of the indent, which generates contact pressure and ensures continuity. There is concern that a clearance will occur and the resistance value will increase.

本発明は、このような従来技術が有する課題に鑑みてなされたものである。そして本発明の目的は、ボルト締結前とボルト締結後でも第１アース端子と第２アース端子との間で確実な導通を安定して確保することができるアース端子を提供することにある。 The present invention has been made in view of the problems of the prior art. An object of the present invention is to provide a ground terminal that can stably ensure reliable electrical continuity between the first ground terminal and the second ground terminal before and after bolt fastening.

本発明の態様に係るアース端子は、ボルト挿通孔が開口された第１端子本体とアース電線を接続する電線接続部とを有する第１アース端子と、ボルト挿通孔が開口され前記第１端子本体に重ねて係止される第２端子本体とアース電線を接続する電線接続部とを有する第２アース端子と、前記第１端子本体は、前記第２端子本体に形成された係止部が係止される被係止部と、前記被係止部に形成されて前記係止部に接触する突起状のインデントと、を有し、前記第２端子本体の係止部の前記インデントが接触する部分には、薄肉部が形成されているものである。 A ground terminal according to an aspect of the present invention includes a first ground terminal having a first terminal body having a bolt insertion hole and a wire connecting portion for connecting a ground wire, and the first terminal body having a bolt insertion hole. a second ground terminal having a second terminal main body that is superimposed and locked to a second ground terminal and a wire connecting portion that connects a ground wire; and a protruding indent formed in the engaged portion and contacting the engaging portion, wherein the indent of the engaging portion of the second terminal body contacts the engaging portion. A thin portion is formed in the portion.

本発明によれば、ボルト締結前とボルト締結後でも第１アース端子と第２アース端子との間で確実な導通を安定して確保することができるアース端子を提供することができる。 According to the present invention, it is possible to provide a ground terminal that can stably ensure reliable conduction between the first ground terminal and the second ground terminal before and after bolt fastening.

本発明の実施形態に係るアース端子の第１アース端子の一例を示す平面図である。FIG. 4 is a plan view showing an example of a first ground terminal of the ground terminal according to the embodiment of the present invention; 上記アース端子の第２アース端子の一例を示す平面図である。It is a top view which shows an example of the 2nd earth terminal of the said earth terminal. 上記第１アース端子と第２アース端子をボルト締結したアース端子の平面図である。It is a top view of the earth terminal which bolted the said 1st earth terminal and the 2nd earth terminal. 上記第１アース端子と第２アース端子をボルト締結する前の重ね合わせ状態の要部を示す拡大斜視図である。FIG. 4 is an enlarged perspective view showing a principal part of the first ground terminal and the second ground terminal in a superimposed state before bolting. （ａ）はボルト締結前の図３中Ｖ－Ｖ線に沿う断面図、（ｂ）はボルト締結時の図３中Ｖ－Ｖ線に沿う断面図、（ｃ）はボルト緩み時の図３中Ｖ－Ｖ線に沿う断面図である。(a) is a cross-sectional view along the VV line in FIG. 3 before bolt tightening, (b) is a cross-sectional view along the VV line in FIG. 3 when the bolt is tightened, and (c) is FIG. 3 when the bolt is loosened. It is a cross-sectional view along the middle VV line. （ａ）は参考例のボルト締結前の図３中Ｖ－Ｖ線に沿う断面図、（ｂ）は参考例のボルト締結後の図３中Ｖ－Ｖ線に沿う断面図である。(a) is a cross-sectional view taken along the line VV in FIG. 3 before the bolt is tightened in the reference example, and (b) is a cross-sectional view along the line VV in FIG. 3 after the bolt is tightened in the reference example.

以下、図面を用いて本発明の実施形態に係るアース端子について詳細に説明する。 Hereinafter, ground terminals according to embodiments of the present invention will be described in detail with reference to the drawings.

図１は本発明の実施形態に係るアース端子の第１アース端子の一例を示す平面図である。図２はアース端子の第２アース端子の一例を示す平面図である。図３は第１アース端子と第２アース端子をボルト締結したアース端子の平面図である。図４は第１アース端子と第２アース端子をボルト締結する前の重ね合わせ状態の要部を示す拡大斜視図である。図５Ａ（ａ）はボルト締結前の図３中Ｖ－Ｖ線に沿う断面図、図５Ａ（ｂ）はボルト締結時の図３中Ｖ－Ｖ線に沿う断面図、図５Ａ（ｃ）はボルト緩み時の図３中Ｖ－Ｖ線に沿う断面図である。図５Ｂ（ａ）は参考例のボルト締結前の図３中Ｖ－Ｖ線に沿う断面図、図５Ｂ（ｂ）は参考例のボルト締結後の図３中Ｖ－Ｖ線に沿う断面図である。 FIG. 1 is a plan view showing an example of a first ground terminal of the ground terminal according to the embodiment of the present invention. FIG. 2 is a plan view showing an example of a second ground terminal of the ground terminal. FIG. 3 is a plan view of the ground terminal in which the first ground terminal and the second ground terminal are bolted. FIG. 4 is an enlarged perspective view showing the main part of the superimposed state before the first ground terminal and the second ground terminal are bolted. 5A (a) is a cross-sectional view along the VV line in FIG. 3 before bolt fastening, FIG. 5A (b) is a cross-sectional view along the VV line in FIG. 3 when the bolt is fastened, and FIG. 5A (c) FIG. 4 is a cross-sectional view taken along line VV in FIG. 3 when the bolt is loosened; FIG. 5B(a) is a cross-sectional view along the VV line in FIG. 3 before the bolt is tightened in the reference example, and FIG. 5B(b) is a cross-sectional view along the VV line in FIG. 3 after the bolt is tightened in the reference example. be.

図１～図３に示すように、アース端子１は、第１アース端子１０と、第２アース端子２０と、を備えていて、自動車の車体パネル（アース用部材）５の接地面５ａにボルト９にて締結固定されるものである。 As shown in FIGS. 1 to 3, the ground terminal 1 includes a first ground terminal 10 and a second ground terminal 20, which are bolted to the ground plane 5a of the body panel (grounding member) 5 of the automobile. It is fastened and fixed at 9.

図１、図３に示すように、第１アース端子１０は、所定形状に打ち抜かれた導電性の金属板をプレス加工することにより形成されており、ボルト挿通孔１２が開口された板状の第１端子本体１１と、アース電線６を接続する電線接続部１７と、を有する。この第１端子本体１１のボルト挿通孔１２は、電線接続部１７の軸方向に対して直交する方向に設けられている。なお、導電性の金属として、例えば、銅、銅合金、アルミニウム、アルミニウム合金等が用いられる。 As shown in FIGS. 1 and 3, the first ground terminal 10 is formed by pressing a conductive metal plate punched into a predetermined shape, and has a plate-like shape with a bolt insertion hole 12. It has a first terminal body 11 and a wire connecting portion 17 for connecting the ground wire 6 . The bolt insertion hole 12 of the first terminal body 11 is provided in a direction orthogonal to the axial direction of the wire connecting portion 17 . In addition, copper, a copper alloy, aluminum, an aluminum alloy, etc. are used as a conductive metal, for example.

図１、図３に示すように、第１端子本体１１の略中央には、ボルト９の軸部９ａが挿通する締結部としての非円形状のボルト挿通孔１２が形成されている。このボルト挿通孔１２の孔縁部の左右（図中上下）両側には、後述する第２アース端子２０の第２端子本体２１に形成された差込部（係止部）２３，２５が係止される被差込部（被係止部）１３，１５を有している。この左右両側の被差込部１３，１５は、第１端子本体１１に対して共に板厚分一段上がった形態で形成され、第１端子本体１１に第２アース端子２０の第２端子本体２１を重ね合わせた際に、これらを係止状態にする部分（被係止部）として形成されている。また、左右両側の被差込部１３，１５の相対向する内縁部１３ａ，１５ａは、円弧状に形成されている。さらに、右側の被差込部１５の外縁端の中央には、舌片状に突出した突出片部１５ｂが形成されている。なお、第１アース端子１０の第１端子本体１１と第２アース端子２０の第２端子本体２１は、それぞれ同じ板厚に形成されている。 As shown in FIGS. 1 and 3 , a non-circular bolt insertion hole 12 is formed substantially in the center of the first terminal body 11 as a fastening portion through which the shaft portion 9a of the bolt 9 is inserted. Insert portions (locking portions) 23 and 25 formed in a second terminal main body 21 of a second earth terminal 20, which will be described later, are engaged with the left and right (up and down in the figure) sides of the edge of the bolt insertion hole 12. It has inserted portions (locked portions) 13 and 15 to be locked. Both of the right and left insertion receiving portions 13 and 15 are formed in a form that is one step higher than the first terminal main body 11 by the plate thickness. It is formed as a portion (to-be-latched portion) that puts them in a locked state when they are superimposed on each other. Inner edge portions 13a and 15a facing each other of the insertion portions 13 and 15 on both left and right sides are formed in an arc shape. Further, a protruding piece 15b protruding like a tongue is formed at the center of the outer edge of the right insertion portion 15. As shown in FIG. The first terminal body 11 of the first ground terminal 10 and the second terminal body 21 of the second ground terminal 20 are formed to have the same plate thickness.

さらに、図１、図３、図５Ａ（ａ）に示すように、第１端子本体１１の被差込部１３の裏面の中央には、突起状の接点となるインデント１４を有する。このインデント１４は、第１端子本体１１と第２端子本体２１の重ね合わせする際に、第２端子本体２１の差込部２３の表面に接触することで、第１端子本体１１と第２端子本体２１の通電状態が確保されるようになっている。 Further, as shown in FIGS. 1, 3, and 5A(a), an indent 14 that serves as a projecting contact is provided in the center of the back surface of the insertion receiving portion 13 of the first terminal body 11 . This indentation 14 contacts the surface of the insertion portion 23 of the second terminal body 21 when the first terminal body 11 and the second terminal body 21 are overlapped, so that the first terminal body 11 and the second terminal are separated from each other. The energized state of the main body 21 is ensured.

また、図１、図３に示すように、第１端子本体１１の右上側には、第２アース端子２０の第２端子本体２１に形成された係止爪（係止部）２６が係止される矩形の係止孔（被係止部）１６を有している。そして、図３に示すように、第１アース端子１０の第１端子本体１１に第２アース端子２０の第２端子本体２１が重ね合わされ係止された状態で、ボルト９にて車体パネル５の接地面５ａに締結固定されるようになっている。 Further, as shown in FIGS. 1 and 3 , a locking claw (locking portion) 26 formed on the second terminal body 21 of the second ground terminal 20 is locked to the upper right side of the first terminal body 11 . It has a rectangular locking hole (locked portion) 16 to be locked. Then, as shown in FIG. 3, in a state where the second terminal body 21 of the second ground terminal 20 is superimposed and locked to the first terminal body 11 of the first ground terminal 10, the vehicle body panel 5 is attached to the vehicle body panel 5 with the bolt 9. It is designed to be fastened and fixed to the ground surface 5a.

図３に示すように、第１端子本体１１の電線接続部１７は、アース電線６の端末の絶縁被覆７から露出した芯線８を加締め固定するＵ字状の導体加締め片１７ａと、アース電線６の端末の絶縁被覆７を加締め固定するＵ字状の被覆加締め片１７ｂと、を有する。なお、図１は、各加締め片１７ａ，１７ｂにてアース電線６が加締め固定される前の状態を示している。 As shown in FIG. 3, the wire connection portion 17 of the first terminal body 11 includes a U-shaped conductor crimping piece 17a for crimping and fixing the core wire 8 exposed from the insulation coating 7 of the terminal of the ground wire 6, and a ground A U-shaped covering crimping piece 17b for crimping and fixing the insulating covering 7 at the end of the electric wire 6 is provided. Note that FIG. 1 shows a state before the ground wire 6 is crimped and fixed by the crimping pieces 17a and 17b.

図１、図３に示すように、第１端子本体１１の上側（図中右側）の中央には、車体パネル係止部１８が端子軸方向に沿って延びるように長く形成されている。すなわち、車体パネル係止部１８は、第１端子本体１１の前端に連成され、先細りするようなアーム状の形状に形成されている。そして、図３に示すように、車体パネル係止部１８の先端には、車体パネル５の係止孔５ｂに差し込まれて係止される先端係止部１９が形成されている。この先端係止部１９が係止されることにより、ボルト９の締め付けの際の端子の不必要な回りが規制される。なお、車体パネル係止部１８の形成は任意である。 As shown in FIGS. 1 and 3, at the center of the upper side (right side in the drawing) of the first terminal main body 11, a vehicle body panel engaging portion 18 is formed long so as to extend along the axial direction of the terminal. That is, the vehicle body panel locking portion 18 is continuously connected to the front end of the first terminal body 11 and formed in a tapered arm shape. Further, as shown in FIG. 3, a front end locking portion 19 is formed at the front end of the vehicle body panel locking portion 18 to be inserted into and locked to the locking hole 5b of the vehicle body panel 5. As shown in FIG. Unnecessary rotation of the terminal when the bolt 9 is tightened is restricted by locking the tip locking portion 19 . Formation of the vehicle body panel locking portion 18 is arbitrary.

図２、図３に示すように、第２アース端子２０は、第１アース端子１０の第１端子本体１１に重ねて係止され、ボルト挿通孔２２が開口された板状の第２端子本体２１と、アース電線６を接続する電線接続部２７と、を有する。この第２端子本体２１のボルト挿通孔２２は、電線接続部２７の軸方向に対して直交する方向に設けられている。なお、導電性の金属として、例えば、銅、銅合金、アルミニウム、アルミニウム合金等が用いられる。 As shown in FIGS. 2 and 3 , the second ground terminal 20 is overlapped with the first terminal body 11 of the first ground terminal 10 and locked, and has a plate-like second terminal body with a bolt insertion hole 22 . 21 and a wire connecting portion 27 for connecting the ground wire 6 . The bolt insertion hole 22 of the second terminal main body 21 is provided in a direction perpendicular to the axial direction of the wire connecting portion 27 . In addition, copper, a copper alloy, aluminum, an aluminum alloy, etc. are used as a conductive metal, for example.

図２、図３に示すように、第２端子本体２１の略中央には、第１アース端子１０の第１端子本体１１の表面１１ａに重ね合わされた際に、該第１端子本体１１のボルト挿通孔１２と連通する締結部としての非円形状のボルト挿通孔２２が形成されている。第２端子本体２１のボルト挿通孔２２と第１端子本体１１のボルト挿通孔１２に、ボルト９の軸部９ａが挿通されて車体パネル５の裏面側に配置された図示しないナットと螺合することで、第１端子本体１１と第２端子本体２１が車体パネル５に締結固定される。 As shown in FIGS. 2 and 3, substantially in the center of the second terminal body 21, when the first ground terminal 10 is overlaid on the surface 11a of the first terminal body 11, the bolt of the first terminal body 11 is provided. A non-circular bolt insertion hole 22 is formed as a fastening portion that communicates with the insertion hole 12 . The shaft portion 9a of the bolt 9 is inserted into the bolt insertion hole 22 of the second terminal body 21 and the bolt insertion hole 12 of the first terminal body 11, and screwed with a nut (not shown) arranged on the back side of the vehicle body panel 5. Thus, the first terminal body 11 and the second terminal body 21 are fastened and fixed to the vehicle body panel 5 .

図２に示すように、第２端子本体２１のボルト挿通孔２２の孔縁部の左右（図中上下）両側には、第１端子本体１１の左右両側の被差込部１３，１５に差し込まれて係止される差込部（係止部）２３，２５を有している。この左右両側の差込部２３，２５は、第２端子本体２１に対して共に板厚分一段下がった形態で形成され、第１端子本体１１の表面１１ａに重ね合わされた際に、これらを係止状態にする部分（係止部）として形成されている。さらに、左右両側の差込部２３，２５の相対向する内縁部２３ａ，２５ａは、円弧状に形成されている。また、左側の差込部２３の外側へ突出した部分には、下方へ傾斜するテーパ部２３ｂが形成されて、相手側の被差込部１３に差し込み易くなっている。また、右側の差込部２５の内側へ突出した部分には、下方へ傾斜するテーパ部２５ｂが形成されて、相手側の被差込部１５に差し込み易くなっている。 As shown in FIG. 2, on both the left and right sides (top and bottom in the figure) of the hole edge of the bolt insertion hole 22 of the second terminal body 21, the bolts are inserted into the insertion portions 13 and 15 on both the left and right sides of the first terminal body 11. It has insertion portions (locking portions) 23 and 25 which are locked by pressing. The insertion portions 23 and 25 on both the left and right sides are formed so as to be one step lower than the second terminal body 21 by the plate thickness, and when superimposed on the surface 11a of the first terminal body 11, they are engaged with each other. It is formed as a portion (locking portion) to be in a stopped state. Furthermore, the opposing inner edge portions 23a and 25a of the insertion portions 23 and 25 on both left and right sides are formed in an arc shape. A tapered portion 23b sloping downward is formed at the portion protruding outward of the left insertion portion 23, so that it can be easily inserted into the insertion receiving portion 13 on the other side. A tapered portion 25b sloping downward is formed on the portion protruding inward of the right insertion portion 25 so that it can be easily inserted into the insertion receiving portion 15 on the other side.

さらに、図２、図５Ａ（ａ）に示すように、第２端子本体２１の差込部２３の中央には薄肉部２４が形成されて、裏面側が矩形の長溝状に凹んでいる。すなわち、突起状の接点となるインデント１４が接触する第２端子本体２１の差込部２３の中央は、プレス金型による潰し加工により裏面側に凹部ができるように（裏面との間に空間ができるように）薄肉化されている。図５Ａ（ｂ）に示すように、ボルト締結時にインデント１４が第２端子本体２１の差込部２３の表面に押し込まれた際に、潰し加工により硬化した薄肉部２４がインデント１４の高さ分撓み変形し、ボルト緩みが発生した際のインデント１４の潰れが防止される。このインデント１４の潰れ防止により、第１端子本体１１と第２端子本体２１の通電状態が経時的に確保されるようになっている。なお、インデント１４の押圧で第２端子本体２１の差込部２３のインデント１４の接触部分が下方に弾性変形させるために、差込部２３のインデント１４の接触部分の板厚が例えば５０％以下の板厚になるようにプレス金型により潰し加工により薄肉化されている。 Further, as shown in FIGS. 2 and 5A(a), a thin portion 24 is formed in the center of the insertion portion 23 of the second terminal body 21, and the back side is recessed into a long rectangular groove. That is, the center of the insertion portion 23 of the second terminal body 21, which is in contact with the indent 14, which is a projecting contact, is crushed with a press die so that a concave portion is formed on the back side (a space is left between the center and the back side). It is thinned so that it can be done). As shown in FIG. 5A(b), when the indent 14 is pushed into the surface of the insertion portion 23 of the second terminal main body 21 during bolt fastening, the thin portion 24 hardened by the crushing process extends to the height of the indent 14. The indent 14 is prevented from being crushed when the bolt is flexibly deformed and the bolt is loosened. By preventing the indent 14 from collapsing, the energized state of the first terminal main body 11 and the second terminal main body 21 is ensured over time. Since the contact portion of the insertion portion 23 of the second terminal main body 21 with the indent 14 is elastically deformed downward by pressing the indent 14, the thickness of the contact portion of the insertion portion 23 with the indent 14 is, for example, 50% or less. It is thinned by crushing with a press die so that the plate thickness is .

また、図２、図３に示すように、第２アース端子２０の第２端子本体２１の右上側には、第１アース端子１０の第１端子本体１１の係止孔１６に係止される係止爪（係止部）２６が形成されている。そして、図３に示すように、第１アース端子１０の第１端子本体１１の表面１１ａに第２アース端子２０の第２端子本体２１が重ね合わされ係止された状態で、ボルト９にて車体パネル５の接地面５ａに締結固定されるようになっている。 2 and 3, the upper right side of the second terminal body 21 of the second ground terminal 20 is locked to the locking hole 16 of the first terminal body 11 of the first ground terminal 10. A locking claw (locking portion) 26 is formed. Then, as shown in FIG. 3, the second terminal body 21 of the second ground terminal 20 is superimposed and locked onto the surface 11a of the first terminal body 11 of the first ground terminal 10, and the bolt 9 is attached to the vehicle body. It is fastened and fixed to the ground surface 5a of the panel 5. As shown in FIG.

図３に示すように、第２端子本体２１の電線接続部２７は、アース電線６の端末の絶縁被覆７から露出した芯線８を加締め固定するＵ字状の導体加締め片２７ａと、アース電線６の端末の絶縁被覆７を加締め固定するＵ字状の被覆加締め片２７ｂと、を有する。なお、図２は、各加締め片２７ａ，２７ｂにてアース電線６が加締め固定される前の状態を示している。 As shown in FIG. 3, the wire connection portion 27 of the second terminal body 21 includes a U-shaped conductor crimping piece 27a for crimping and fixing the core wire 8 exposed from the insulation coating 7 of the terminal of the ground wire 6, and a ground A U-shaped covering crimping piece 27b for crimping and fixing the insulating covering 7 of the end of the electric wire 6 is provided. 2 shows a state before the ground wire 6 is crimped and fixed by the crimping pieces 27a and 27b.

以上実施形態のアース端子１によれば、第１アース端子１０と第２アース端子２０とを組み付けるには、第１端子本体１１の表面１１ａに第２端子本体２１を重ね合わせる。この際、図４に示すように、第１端子本体１１の左右両側の被差込部１３，１５に第２端子本体２１の左右両側の差込部２３，２５を差し込んで係止させ、かつ、第１端子本体１１の係止孔１６に第２端子本体２１の係止爪２６を係止させることで組み付けが完了する。この組み付け後、図３に示すように、第２端子本体２１のボルト挿通孔２２と第１端子本体１１のボルト挿通孔１２にボルト９の軸部９ａを挿通してナットを介して車体パネル５の接地面５ａに締結固定する。 According to the ground terminal 1 of the embodiment described above, in order to assemble the first ground terminal 10 and the second ground terminal 20 , the second terminal body 21 is placed on the surface 11 a of the first terminal body 11 . At this time, as shown in FIG. 4, the insertion portions 23 and 25 on both the left and right sides of the second terminal body 21 are inserted into and engaged with the insertion portions 13 and 15 on both the left and right sides of the first terminal body 11, and The assembly is completed by engaging the engaging claws 26 of the second terminal body 21 with the engaging holes 16 of the first terminal body 11 . After this assembly, as shown in FIG. 3, the shaft portion 9a of the bolt 9 is inserted through the bolt insertion hole 22 of the second terminal body 21 and the bolt insertion hole 12 of the first terminal body 11, and the vehicle body panel 5 is mounted via the nut. is fastened and fixed to the ground contact surface 5a.

図５Ａ（ｂ）に示すように、ボルト締結時に、インデント１４が第２端子本体２１の差込部２３の表面を押し、差込部２３の潰し加工により硬化した薄肉部２４がインデント１４の高さ分撓み変形する。この撓み変形により、第１端子本体１１と第２端子本体２１の通電状態が経時的に確保され、常に安定したアース状態となる。 As shown in FIG. 5A(b), the indent 14 presses the surface of the insertion portion 23 of the second terminal main body 21 when the bolt is tightened, and the thin portion 24 hardened by crushing the insertion portion 23 becomes the height of the indent 14. As shown in FIG. It bends and deforms. Due to this flexural deformation, the energized state of the first terminal body 11 and the second terminal body 21 is ensured over time, and a stable ground state is always achieved.

次に、差込部２３に薄肉部２４がある本実施形態と差込部２３’に薄肉部が無い参考例について詳述する。図５Ｂ（ａ）、図５Ｂ（ｂ）の参考例に示すように、薄肉部が形成されていない差込部２３’の場合、ボルト締結時にインデント１４が差込部２３’に強く押し付けられることでインデント１４が潰れる。そして、ボルト緩み時に、潰れたインデント１４と差込部２３’との間にクリアランスＴが発生して抵抗値が上昇し、安定した通電状態が得られない。これに対し、本実施形態では、図５Ａ（ｂ）に示すように、ボルト締結時にインデント１４が第２端子本体２１の差込部２３の表面に押し込まれた際に、潰し加工により硬化した薄肉部２４がインデント１４の高さ分撓み変形する。そして、図５Ａ（ｃ）に示すように、ボルト緩みが発生しても、インデント１４の潰れが防止されてクリアランスが発生しないため、第１端子本体１１と第２端子本体２１の通電状態が経時的に確保され、常に安定したアース状態となる。 Next, the present embodiment in which the insertion portion 23 has the thin portion 24 and the reference example in which the insertion portion 23' does not have the thin portion will be described in detail. As shown in the reference examples of FIGS. 5B(a) and 5B(b), in the case of an insertion portion 23' in which a thin portion is not formed, the indent 14 is strongly pressed against the insertion portion 23' when the bolt is tightened. , the indent 14 is destroyed. Then, when the bolt is loosened, a clearance T is generated between the crushed indent 14 and the insertion portion 23', the resistance value increases, and a stable energized state cannot be obtained. On the other hand, in the present embodiment, as shown in FIG. 5A(b), when the indent 14 is pushed into the surface of the insertion portion 23 of the second terminal main body 21 during bolt fastening, the thin wall is hardened by crushing. The portion 24 is flexurally deformed by the height of the indent 14 . As shown in FIG. 5A(c), even if bolt loosening occurs, the collapse of the indent 14 is prevented and the clearance does not occur. is ensured and is always in a stable ground state.

このように、第２端子本体２１の差込部２３のインデント１４が接触する部分に薄肉部２４を形成したことにより、ボルト締結前とボルト締結後でも第１アース端子１０と第２アース端子２０との間で確実な導通を安定して確保することができる。 By forming the thin portion 24 at the portion of the insertion portion 23 of the second terminal main body 21 that is in contact with the indent 14, the first ground terminal 10 and the second ground terminal 20 are connected to each other before and after bolt fastening. reliable conduction can be stably ensured between them.

以上、本実施形態を説明したが、本実施形態はこれらに限定されるものではなく、本実施形態の要旨の範囲内で種々の変形が可能である。 Although the present embodiment has been described above, the present embodiment is not limited to these, and various modifications are possible within the scope of the gist of the present embodiment.

すなわち、前記実施形態によれば、第１端子本体の両側の被差込部の一方の側の被差込部にインデントを形成したが、他方の側の被差込部にもインデントを形成しても良い。また、他方の側の被差込部にインデントを形成した場合には、第２端子本体の他方の側の差込部に薄肉部を形成しても良い。 That is, according to the above-described embodiment, one of the insertion receiving portions on both sides of the first terminal body is indented, but the other insertion receiving portion is also indented. can be Moreover, when the indentation is formed in the insertion receiving portion on the other side, the thin portion may be formed in the insertion portion on the other side of the second terminal main body.

１アース端子
５車体パネル（アース用部材）
５ａ接地面
６アース電線
９ボルト
１０第１アース端子
１１第１端子本体
１２ボルト挿通孔
１３，１５被差込部（被係止部）
１４突起状のインデント
１７電線接続部
２０第２アース端子
２１第２端子本体
２２ボルト挿通孔
２３，２５差込部（係止部）
２４薄肉部
２７電線接続部 1 ground terminal 5 vehicle body panel (member for grounding)
5a ground plane 6 ground wire 9 bolt 10 first ground terminal 11 first terminal main body 12 bolt insertion hole 13, 15 insertion part (locked part)
14 Protruding indent 17 Wire connecting portion 20 Second ground terminal 21 Second terminal main body 22 Bolt insertion hole 23, 25 Insertion portion (locking portion)
24 thin portion 27 wire connection portion

Claims

a first ground terminal having a first terminal body having a bolt insertion hole and a wire connecting portion for connecting a ground wire;
a second ground terminal having a second terminal body having a bolt insertion hole and being overlapped and locked to the first terminal body and a wire connecting portion for connecting a ground wire;
The first terminal body includes a locked portion to which the locking portion formed on the second terminal body is locked, and a protruding indent formed on the locked portion and contacting the locking portion. and
A ground terminal in which a thin portion is formed in a portion of the engaging portion of the second terminal body that is in contact with the indent.

When the first terminal main body and the second terminal main body are overlapped and locked together and fastened and fixed to the ground surface of the grounding member with a bolt, the thin portion is pressed by the indent and deformed by bending. 2. The ground terminal of claim 1, wherein the ground terminal

The locked portions are provided on opposite sides of the bolt insertion hole formed in the first terminal body,
The locking portions are provided on opposite sides of the bolt insertion hole formed in the second terminal body,
The indentation is formed in at least one of the locked portions on both sides,
3. The ground terminal according to claim 1, wherein said thin portion is formed in at least one side of said engaging portion.