Connection terminal

Abstract

To provide a connection terminal capable of miniaturizing both a metal plate material itself forming the connection terminal and the size of a connection.SOLUTION: A connection terminal 1 includes a box-shaped connection 20 into which a connection tab of a male connection terminal can be inserted. The box-shaped connection 20 is a hollow box which has a pair of facing top wall 21 and bottom wall 22 and a pair of facing side walls 23, 24 laterally coupling the top wall 21 and the bottom wall 22, the top, bottom and side walls being formed by folding a metal plate material 30, and which includes an insertion port 25 into which the connection tab is inserted. The fitting side wall 24 of the pair of side walls 23, 24 comprises a side wall 242 on a top side formed by folding a portion extending from the top wall 21 and a side wall 243 on a bottom side formed by folding a portion extending from the bottom wall 22. A fitting portion 244 is provided in the side wall 242 on the top side, and a fitting groove 245 in which the fitting portion 244 is fitted is provided in the side wall 243 on the bottom side.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] This invention relates to a connection terminal having a box-shaped connection part into which an insertion connection part of a connection target member can be inserted, for example.

Background Art

[0002] Electrical equipment installed in automobiles and the like constitutes an electric circuit by connecting to another electrical equipment or a power supply device via a wire harness in which covered electric wires are bundled. Note that wire harnesses, or a wire harness and electrical equipment or a power supply device, are connected by fitting connectors attached to each of them. Connection terminals connected to the covered electric wires are installed inside these connectors, and the connection terminals are connected to each other to establish electrical conductivity.

[0003] As one of the connection terminals to be connected for electrical conductivity, there is a connection terminal having a box-shaped connection part into which an insertion connection part of a connection terminal to be connected is inserted, like the crimp terminal disclosed in Patent Document 1. A connection terminal having such a box-shaped connection part is formed by bending a metal plate material.

[0004] The box-shaped connection part formed by bending as described above has an upper wall part, a lower wall part, and side wall parts on both sides. In order to maintain the box shape, specifically, in order to be able to maintain the box shape even when an external force acts, any one of these wall parts is overlapped to form a square cross-sectional shape. Therefore, the metal plate material for forming the connection terminal has become larger, and the connection part has not been able to be miniaturized.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] An object of the present invention is to provide a connection terminal capable of reducing the size of the metal plate material itself forming the connection terminal and the size of the connection portion.

Means for Solving the Problems

[0007] This invention is a connection terminal having a box-shaped connection portion into which an insertion connection portion of a member to be connected can be inserted. The connection portion is formed by bending a metal plate material and has a pair of opposing top wall portions and bottom wall portions, and a pair of opposing side wall portions that connect the top wall portion and the bottom wall portion laterally. It is a hollow box shape provided with an insertion port for inserting the insertion connection portion. On the base end side, which is opposite to the insertion port in the connection part, a wire connection part for connecting a wire is provided. One of the pair of side wall portions is composed of a top side side wall portion formed by bending a portion extending from the top wall portion, and a bottom side side wall portion formed by bending a portion extending from the bottom wall portion. The connection part is formed in a flat cross-sectional shape where the widthwise lengths of the top wall part and the bottom wall part are longer than the heightwise length of the side wall part. A fitting portion is provided on at least one of the top side side wall portion and the bottom side side wall portion, and a fitted portion into which the fitting portion is fitted is provided on the other. , The fitting part fits into the fitted part from the outside of the side wall part, and the fitting part and the fitted part are configured to engage in the direction in which the top wall part and the bottom wall part are separated. The fitting part is provided in a manner that protrudes from the end of the top side wall part toward the bottom side wall part, and the fitted part is provided to be concave from the tip of the bottom side wall part. The direction connecting the connection part and the wire connection part is defined as the longitudinal direction, and the longitudinal length of the top side wall part is set to be longer than half of the longitudinal length of the bottom side wall part, and the longitudinal length of the fitting part is set to be longer than half of the longitudinal length of the top side wall part. It is characterized by this. The member to be connected may be, for example, a mating connection terminal attached to an electric wire or a bus bar.

[0008] The outside of the above-mentioned side wall part is the outside of the box shape, and it refers to the opposite side of the opposing direction with respect to a pair of opposing side wall parts. The widthwise lengths of the above-mentioned top wall part and bottom wall part are the intervals in the opposing direction between a pair of opposing side walls, and the heightwise length of the side wall part is the interval in the opposing direction between the opposing top wall part and bottom wall part. The above-mentioned wire connection part may be a crimp connection part that crimps and connects the conductor part of the covered wire, or a wire connection part that welds the conductor part of the covered wire by ultrasonic welding or the like.

[0009] According to this invention, the size of the metal plate material itself forming the connection terminal and the size of the connection portion can be reduced. Specifically, by fitting a fitting portion provided on at least one of the top side side wall portion formed by bending a portion extending from the top wall portion and the bottom side side wall portion formed by bending a portion extending from the bottom wall portion, and a fitted portion provided on the other, it is possible to configure one of the side wall portions in the connection portion that is a hollow box shape, and to configure a connection terminal having a connection portion that can maintain the box shape even when an external force acts.

[0010] In addition, any one of the side wall portions in the connecting portion that is in the shape of a hollow box is configured by fitting together a top-side side wall portion formed by bending a portion extending from the top wall portion and a bottom-side side wall portion formed by bending a portion extending from the bottom wall portion. Therefore, compared to the case of configuring by overlapping any one of the wall portions in the hollow box shape, a connection terminal having a box-shaped connecting portion made of a compact metal plate material can be configured. Further, compared to a hollow box-shaped connecting portion configured by overlapping any one of the wall portions, the connecting portion can be configured more compactly by the thickness of the overlapping plate material.

[0011] Also , the fitting portion fits into the fitted portion from the outside of the side wall portion, and the fitting portion and the fitted portion are configured to engage in a direction in which the top wall portion and the bottom wall portion are separated ru .

[0012] Therefore , since the fitting portion and the fitted portion engage in a direction in which the top wall portion and the bottom wall portion are separated, the fitting state between the top-side side wall portion and the bottom-side side wall portion can be maintained even when an external force acts. In addition, since the fitting portion can be fitted into the fitted portion from the outside of the side wall portion with respect to the fitted portion, the fitting portion and the fitted portion that engage in a direction in which the top wall portion and the bottom wall portion are separated can be easily fitted together.

[0013] Ma ta The fitting portion is provided in a manner protruding from the end portion of the top-side side wall portion toward the bottom-side side wall portion, and the fitted portion is provided so as to be concave from the tip end portion of the bottom-side side wall portion ru tame , compared to the case where the fitting portion is provided on the bottom-side side wall portion, the shape of the metal plate material before bending can be simplified.

[0014] Ma ta The connecting portion is formed in a flat cross-sectional shape in which the lengths in the width direction of the top wall portion and the bottom wall portion are longer than the length in the height direction of the side wall portion ru tame , since the side wall portion that forms the short side in the box shape with a flat cross section is composed of the top side wall portion and the bottom side wall portion where the fitting portion and the fitted portion are fitted together, a box shape with higher rigidity can be formed compared to the case where the wall portions that form the long side portion are fitted together.

[0015] Also, since a wire connection part for connecting a wire is provided on the base end side, which is opposite to the insertion port in the connection part, a connection terminal can be attached to the tip of the covered wire via the wire connection part.

[0016] Also, as an aspect of this invention , the a contact spring portion that extends from the base end side toward the insertion port inside the connection portion and contacts while biasing the inserted insertion connection portion may be provided. 。

[0017] According to this invention , the since a contact spring portion that extends from the base end side toward the insertion port is provided inside the connection portion, it contacts while biasing the insertion connection portion inserted from the insertion port, and reliable conductivity can be obtained in the connection state with the connection target member.

[0018] Also, as an aspect of this invention, the contact spring portion is arranged along the top wall portion, and at the base end side of the connection portion, it extends from either one of the bottom side wall portion and the opposing side wall portion, is spanned over the other, and a spring support portion that supports the base end of the contact spring portion may be provided.

[0019] According to this invention, more stable conductivity can be obtained in the connection state with the connection target member. Specifically, at the base end side of the connection portion, the spring support portion that extends from either one of the bottom side wall portion and the opposing side wall portion and is spanned over the other supports the base end of the contact spring portion arranged along the top wall portion. Therefore, the contact spring portion can be reliably biased and contacted with respect to the inserted insertion connection portion, and more stable conductivity can be obtained in the connection state with the connection target member.

[0020] As an aspect of the present invention, the spring support portion may extend from the bottom side wall portion and be spanned across the opposing side wall portions. According to the present invention, since the spring support portion extending from the bottom side wall portion is bent in the direction opposite to the top wall portion bent from the side wall portion and spanned across the opposing side wall portions, compared with the case where the spring support portion is bent in the same direction as the top wall portion with respect to the side wall portion, errors can be absorbed, and the spring support portion can be surely spanned across the opposing side wall portions to be stabilized.

[0021] As an aspect of the present invention, the spring support portion may be provided with a standing portion protruding upward from the bottom side wall portion and a support main body portion spanned from the standing portion to the side wall portion. According to the present invention, since the standing portion of the spring support portion is adjacent to the top side wall portion, even when an external force acts, the standing portion and the top side wall portion do not interfere with each other, and the spring support portion and the top side wall portion can be stabilized.

[0022] As an aspect of the present invention, a pressing portion may be provided that extends from the top wall portion toward the base end side and is arranged along the upper portion of the support main body portion. According to the present invention, since the pressing portion arranged along the upper portion presses the support main body portion, when contacting while biasing the insertion connection portion into which the contact spring portion supported by the support main body portion is inserted, the contact spring portion can be more surely brought into contact with the insertion connection portion while biasing against the reaction force.

[0023] As an aspect of the present invention, a position regulating portion may be provided that protrudes toward the insertion port at the tip of the top wall portion and regulates the insertion position of the insertion connection portion. According to the present invention, for example, it is possible to prevent a connection state in which conductivity cannot be ensured, such as inserting the insertion connection portion between the top wall portion and the contact spring portion, and while regulating the insertion position by the position regulating portion, the insertion connection portion is inserted into the position where the contact spring portion contacts while being biased, and a connection state with reliable conductivity can be realized.

[0024] As an aspect of the present invention, the widthwise length of the position regulating portion may be shorter than the widthwise length of the contact spring portion. The widthwise length of the position regulating portion is the length in the same direction as the widthwise direction of the top wall portion.

[0025] According to the present invention, the position regulating portion can surely fit the top side wall portion and the bottom side wall portion to form the side wall portion without hindering the bending process of the top side wall portion and the bottom side wall portion that constitute the side wall portion.

[0026] As an aspect of the present invention, a foreign matter intrusion preventing portion may be provided that extends from the top wall portion and protrudes toward an opening provided on the proximal end side of the connecting portion. According to the present invention, in the connection state between the connection target member and the connection terminal, it is possible to prevent foreign matter from entering the inside of the connection portion where the contact spring portion contacts the insertion connection portion and interfering with the contact portion between the contact spring portion and the insertion connection portion, thereby reducing the conductivity.

[0027] As an aspect of the present invention, a protrusion protruding upward from the top wall portion may be provided. According to the present invention, a protrusion can be provided without affecting the contact spring portion, and when an attempt is made to attach the connection terminal to the connector housing in an incorrect orientation, the protrusion interferes, preventing attachment in the incorrect orientation.

[0028] As an aspect of the present invention, a through hole communicating the inside and the outside may be provided in the top wall portion. According to the present invention, a through hole can be provided without affecting the contact spring portion, and by locking a locking claw to the through hole, the connection terminal can be fixed to a predetermined position of the connector housing.

Effects of the Invention

[0029] According to the present invention, it is possible to provide a connection terminal capable of miniaturizing both the metal plate material itself forming the connection terminal and the size of the connection portion.

Brief Description of the Drawings

[0030]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0031] One embodiment of this invention will be described below with reference to the following drawings. Figs. 1 to 4 show explanatory drawings of the connection terminal 1, Fig. 5 shows a plan view of the metal plate 30, Fig. 6 shows an explanatory drawing regarding the assembly of the connection terminal 1, and Fig. 7 shows an explanatory drawing regarding the attachment of the connection terminal 1 to the connector housing 50.

[0032] Specifically, Fig. 1(a) is a perspective view showing the front, top, and right side surfaces of the connection terminal 1, and Fig. 1(b) shows a cross-sectional perspective view of the connection terminal 1 taken along the A-A arrow direction of Fig. 1(a). Fig. 2(a) is a perspective view showing the front, bottom, and left side surfaces of the connection terminal 1, and Fig. 2(b) is a perspective view showing the back, top, and left side surfaces of the connection terminal 1.

[0033] Fig. 3(a) shows a right side view of the connection terminal 1, and Fig. 3(b) shows a cross-sectional view taken along the E-E arrow direction of Fig. 4(a). Fig. 4(a) shows a front view of the connection terminal 1, and Fig. 4(b) shows a cross-sectional view taken along the B-B arrow direction of Fig. 3(a). Fig. 4(c) shows a cross-sectional view taken along the C-C arrow direction of Fig. 3(a), and Fig. 4(d) shows a cross-sectional view taken along the D-D arrow direction of Fig. 3(a).

[0034] FIG. 5 shows a plan view of a metal plate material 30 before assembling to form the connection terminal 1. FIG. 6(a) shows a perspective view of the connection terminal 1 during assembly, and FIG. 6(b) shows a front view of the connection terminal 1 during assembly. FIG. 7(a) is a longitudinal cross-sectional perspective view showing the front, top, and right side surfaces of the state before mounting the connection terminal 1 to the connector housing 50, and FIG. 7(b) shows a longitudinal cross-sectional perspective view showing the back, bottom, and left side surfaces of the same state.

[0035] Note that usually, when mounting the connection terminal 1 to the connector housing 50, it is mounted in a state where a covered electric wire is crimp-connected to the electric wire connection part 10 described later. However, in FIG. 7, in order to explain the mounting of the connection terminal 1 to the connector housing 50, the connection terminal 1 in which the covered electric wire is not crimped at the electric wire connection part 10 is shown.

[0036] Also, in the connection terminal 1, the direction connecting the electric wire connection part 10 and the box-shaped connection part 20 is defined as the longitudinal direction L, the side of the electric wire connection part 10 with respect to the box-shaped connection part 20 is defined as the base end side LB, and the side of the box-shaped connection part 20 with respect to the electric wire connection part 10 is defined as the tip end side LF. Further, in FIG. 1, the vertical direction is defined as the height direction H, the upper side in the height direction H is defined as the upper side HU, and the lower side is defined as the lower side HD. Furthermore, the direction connecting the upper left and lower right in FIG. 1 and orthogonal to the longitudinal direction L and the height direction H is defined as the width direction W. Also, in the width direction W, the right side of the connection terminal 1 in a front view is defined as the right side WR, and the left side is defined as the left side WL.

[0037] The connection terminal 1 is a connection terminal that can be conductively connected to a male connection terminal (not shown) which is a connection target member. The connection terminal 1 has an electric wire connection part 10 for connecting a covered electric wire (not shown) and a box-shaped connection part 20 into which a connection tab (not shown) which is an insertion connection part of the male connection terminal is inserted, and they are arranged in this order from the base end side LB toward the tip end side LF.

[0038] The electric wire connection part 10 is a location for crimp-connecting a covered electric wire (not shown), and is a so-called open barrel including an insulation barrel 11 and a wire barrel 12. The insulation barrel 11 is arranged on the base end side LB and has a barrel piece 111 that extends in a U shape in a rear view as shown in FIGS. 1(a) and 2(b) so as to crimp the tip portion of the insulation coating of a covered wire (not shown).

[0039] The wire barrel 12 is arranged on the tip end side LF at a predetermined interval from the insulation barrel 11 and has a barrel piece 112 that extends in a substantially V shape in a rear view so as to crimp the conductor portion exposed on the tip end side LF from the insulation coating of a covered wire (not shown) (see FIGS. 1(a) and 2(b)). On the inner surface of the wire barrel 12, a plurality of grooved serrations 122 extending in the width direction W are provided at predetermined intervals in the longitudinal direction L.

[0040] The wire connection part 10 configured in this way can crimp-connect a covered wire with a conductor exposed from the tip end. Specifically, the conductor exposed from the tip end of the covered wire is arranged in the wire barrel 12, and the tip portion of the insulation coating is arranged in the insulation barrel 11. Then, the conductor arranged in the wire barrel 12 is crimped with the barrel piece 121 that is bent back, and the tip portion of the insulation coating arranged in the insulation barrel 11 is crimped with the barrel piece 111 that is bent back. As a result, the conductor of the covered wire can be connected to be electrically conductive with the wire barrel 12, and physically connected with the insulation barrel 11. Since the wire barrel 12 is provided with the serrations 122, the conductor crimped with the barrel piece 121 bites into the serrations 122, and the conductivity can be improved.

[0041] In this embodiment, the so-called open barrel type wire connection part 10 composed of the insulation barrel 11 having the barrel piece 111 as described above and the wire barrel 12 having the barrel piece 121 has been described. However, a crimp connection structure called a so-called closed barrel may be used, or further, a structure in which the conductors are connected to be electrically conductive by ultrasonic welding or the like may be used.

[0042] At connection terminal 1, the box-shaped connection part 20 into which a connection tab, which is the insertion connection part of the male connection terminal, is inserted and connected will be described below. The box-shaped connection part 20 is arranged on the tip side LF with respect to the wire connection part 10, and is formed in a flat box shape in cross section that is longer in the width direction W than in the height direction H.

[0043] The box-shaped connection part 20 is formed in a flat box shape in cross section by a pair of top wall parts 21 and bottom wall parts 22 facing each other in the height direction H, and a pair of side wall parts 23, 24 facing each other in the width direction W that connect the top wall part 21 and the bottom wall part 22 on the side.

[0044] Further, the box-shaped connection part 20 has an insertion port 25 for inserting the above-mentioned connection tab (not shown) of the male connection terminal on the tip side LF, also has an opening 26 on the base end side LB, and is a hollow box shape having an internal space 27 penetrating in the longitudinal direction L.

[0045] And below the top wall part 21 in the internal space 27, there is provided a contact spring 28 that extends from the base end side LB to the tip side LF and contacts while biasing the inserted connection tab (not shown). Also, on the base end side LB of the box-shaped connection part 20, there is provided a spring support part 29 that supports the base of the contact spring 28.

[0046] The top wall part 21 has a substantially regular rectangular shape in plan view, and is provided with a through hole 211 that penetrates in the plate thickness direction closer to the tip side LF than the center in the longitudinal direction L, and to which a locking claw 51 of a connector housing 50 described later is locked. The through hole 211 is an opening having a rectangular shape in plan view that is longer in the width direction W than in the longitudinal direction L, and on both sides in the width direction W of the through hole 211, there are provided stabilizers 212 that protrude upward to the upper side HU. The stabilizers 212 are formed to protrude upward to the upper side HU by bending from the top wall part 21.

[0047] Also, at the end of the leading end side LF of the top wall portion 21, a position regulating portion 213 is provided which extends from the center in the width direction W toward the leading end side LF and is bent downward to the lower side HD. The position regulating portion 213 is formed to have a length of about 2 / 3 of the length of the top wall portion 21 in the width direction W and is bent downward to the lower side HD, so that it protrudes toward the insertion port 25. As shown in FIG. 4(a), the position regulating portion 213 is formed such that the lower end of the position regulating portion 213 is disposed slightly above the center in the height direction H at the insertion port 25.

[0048] Also, at the end of the base end side LB of the top wall portion 21, a pressing portion 214 extending from the center in the width direction W toward the base end side LB and a foreign matter intrusion preventing portion 215 bent downward to the lower side HD from the end of the base end side LB of the pressing portion 214 are provided.

[0049] The pressing portion 214 and the foreign matter intrusion preventing portion 215 are formed to have a length of about 2 / 3 of the length of the top wall portion 21 in the width direction W, similar to the position regulating portion 213. The foreign matter intrusion preventing portion 215 bent downward to the lower side HD from the end of the pressing portion 214 protrudes toward the opening 26.

[0050] The top wall portion 21 configured as described above is bent in a direction perpendicular to the front view with respect to the simple side wall portion 23 on the left side WL among the pair of side wall portions 23 and 24 facing each other in the width direction W. Also, on the right side WR of the top wall portion 21, the upper side sky side wall portion 242 constituting the fitting side wall portion 24 is bent in a direction perpendicular to the front view.

[0051] The top wall portion 21 and the bottom wall portion 22 facing each other in the height direction H are, as shown in FIG. 2(a), rectangular in a bottom view and longer in the longitudinal direction L than in the width direction W, and the wire connection portion 10 is connected to the end of the base end side LB. Therefore, the bottom wall portion 22 faces the top wall portion 21 formed in a substantially square shape in a plan view in the height direction H and protrudes toward the leading end side LF and the base end side LB from the top wall portion 21 in a plan view.

[0052] On the tip side LF from the center in the longitudinal direction L in the top wall portion 21, there are provided two beads 221 that protrude toward the upper side HU, that is, protrude toward the side of the internal space 27, with a predetermined interval in the width direction W. Note that the interval in the width direction W between the two beads 221 is arranged at an interval narrower than the length in the width direction W of a contact spring 28 described later, as shown in FIG. 4(b). Thereby, the connection tab inserted into the box-shaped connection portion 20 can be securely connected by being sandwiched between the bead 221 and the contact spring 28. Further, the end portion on the tip side LF of the bottom wall portion 22 is chamfered on the outer surface continuously with the end portions on the tip side LF of side wall portions 23 and 24 described later.

[0053] The bottom wall portion 22 configured as described above is formed by bending the simple side wall portion 23 on the left side WL of the pair of side wall portions 23 and 24 facing each other in the width direction W at a right angle in the front view direction. Also, on the right side WR of the bottom wall portion 22, the bottom side wall portion 243 on the lower side HD constituting the fitting side wall portion 24 is formed by bending it at a right angle in the front view direction.

[0054] Next, the side wall portions 23 and 24 will be described. First, the configuration common to the side wall portions 23 and 24 will be described. The side wall portions 23 and 24 are formed to have the same length in the longitudinal direction L as the bottom wall portion 22, and are connected to the wire connection portion 10 at the base end side LB, similarly to the bottom wall portion 22.

[0055] The side wall portions 23 and 24 formed to have the same length in the longitudinal direction L as the bottom wall portion 22 have a shorter length in the height direction H compared to the length in the longitudinal direction L, and protrude toward the tip side LF and the base end side LB from the top wall portion 21, similarly to the bottom wall portion 22.

[0056] Note that the bottom wall portion 22 and the side wall portions 23 and 24 protruding toward the tip side LF from the top wall portion 21 protrude toward the tip side LF from the top wall portion 21 and are formed such that the front surface of the position regulating portion 213 bent toward the lower side HD and the position on the tip side LF substantially coincide.

[0057] On the upper side HU and the tip side LF of the side wall portions 23 and 24 that project toward the LF on the tip side from the ceiling wall portion 21, notches are provided to prevent interference with the bent-back position regulating portion 213. Also, in the side wall portions 23 and 24, there is a range where the spring support portion 29 is arranged in a portion that projects toward the base end side LB from the ceiling wall portion 21, and further, a stepped-down portion 231, 241 that descends to the lower side HD is provided on the base end side LB thereof.

[0058] Subsequently, the configuration of the simple side wall portion 23 on the left side WL among the side wall portions 23 and 24 will be described. The simple side wall portion 23 having the above-described common configuration is provided with a support portion 232 that supports the end portion of the spring support portion 29 in a range where the spring support portion 29 is arranged in a portion that projects toward the base end side LB from the ceiling wall portion 21.

[0059] The support portion 232 is formed lower by the thickness of the spring support portion 29 with respect to the side surface of the internal space 27 in the ceiling wall portion 21, that is, the inner surface, toward the lower side HD. Note that the support portion 232 is formed to have a length approximately the same as the length of the spring support portion 29 in the longitudinal direction L.

[0060] The simple side wall portion 23 configured as described above is bent at a right angle in the front view with respect to the bottom wall portion 22 as described above. Also, on the upper side HU of the simple side wall portion 23, the ceiling wall portion 21 is configured by being bent at a right angle in the front view with respect to the simple side wall portion 23.

[0061] As described above, the fitting side wall portion 24 arranged on the right side WR among the side wall portions 23 and 24 and having the stepped-down portion 241 is extended toward the upper side HU in a range where the spring support portion 29 is arranged in a portion that projects toward the base end side LB from the ceiling wall portion 21, and a rising portion 291 in the spring support portion 29 is provided.

[0062] Note that the fitting side wall portion 24 is configured by fitting the upper side wall portion 242 on the upper side HU and the bottom side wall portion 243 on the lower side HD in the height direction H. The top side wall portion 242 extends from the right side WR of the top wall portion 21 and is formed by being bent toward the lower side HD, and is formed to have the same length as the length of the top wall portion 21 in the longitudinal direction L.

[0063] At the lower end of the top side wall portion 242, there is provided a fitting portion 244 having an expanding shape that protrudes toward the bottom side wall portion 243 on the lower side HD and gradually expands in the longitudinal direction L toward the lower side HD. The bottom side wall portion 243 includes a stepped-down portion 241 and a rising portion 291, extends from the right side WR of the bottom wall portion 22, and is formed by being bent toward the upper side HU, and is formed to have the same length as the length of the bottom wall portion 22 in the longitudinal direction L.

[0064] In this way, the bottom side wall portion 243 having the stepped-down portion 241 and the rising portion 291 is convex in a side view in the longitudinal direction L where the rising portion 291 protrudes toward the upper side HU, and at a position corresponding to the fitting portion 244 in the top side wall portion 242, there is provided a fitting groove 245 that is concave from the upper end toward the lower side HD and into which the fitting portion 244 fits.

[0065] Note that since the top side wall portion 242 and the bottom side wall portion 243 configured as described above are each formed to have a height of about half the height of the fitting side wall portion 24, the location where the lower end of the top side wall portion 242 and the upper end of the bottom side wall portion 243 face each other in the height direction H becomes the central position in the height direction H of the fitting side wall portion 24.

[0066] Further, the rising portion 291 provided on the bottom side wall portion 243 is disposed adjacent to the base end side LB of the top side wall portion 242, and the upper surface of the support main body portion 292 that is bent from the upper end of the rising portion 291 is formed at a height that abuts against the side surface, that is, the inner surface, of the internal space 27 in the pressing portion 214 of the top wall portion 21.

[0067] The end portion on the tip side LF of the internal space 27 surrounded by the top wall portion 21, the bottom wall portion 22, and the side wall portions 23, 24 configured as described above is used as the insertion port 25, and the end portion on the base end side LB is used as the opening 26. And at the upper side HU in the insertion port 25, the position restricting portion 213 protrudes toward the lower side HD, and at the upper side HU in the opening 26, the foreign matter intrusion preventing portion 215 protrudes toward the lower side HD.

[0068] The spring support portion 29 is formed in a substantially L shape in a rear view by a rising portion 291 provided on the fitting side wall portion 24 and a support main body portion 292 that is bent from the upper end of the rising portion 291 toward the left side WL and is spanned over the support portion 232 of the simple side wall portion 23. Note that the spring support portion 29 is formed to have the same length in the longitudinal direction L as the pressing portion 214 in the top wall portion 21, and the support main body portion 292 is formed to have the same length in the width direction W as the bottom wall portion 22.

[0069] The contact spring 28 is configured to extend from the base end side LB to the tip side LF below the top wall portion 21 in the internal space 27 and to contact while biasing a connection tab (not shown) to be inserted. Specifically, the base end side LB of the contact spring 28 extends from the center in the width direction W of the support main body portion 292 of the spring support portion 29 toward the tip side LF. Therefore, the contact spring 28 and the support main body portion 292 are formed in a substantially T shape facing the base end side LB in a plan view.

[0070] The contact spring 28 whose base is supported by the support main body portion 292 is formed in an inverted U shape in a side view, bending downward toward the lower side HD as it goes toward the tip side LF and bending upward toward the upper side HU from the bending point 281 at a position corresponding to the vicinity of the center of the bead 221 of the bottom wall portion 22 (see FIG. 3(b)).

[0071] Note that the bending point 281 of the contact spring 28 is disposed slightly below the lower side HD than the lower end of the position restricting portion 213 that protrudes toward the lower side HD at the insertion port 25 in a front view, and the tip portion toward the upper side HU from the bending point 281 is formed to be located above the lower end of the position restricting portion 213.

[0072] Further, as shown in FIG. 4(b), the contact spring 28 is formed to have a length of about 3 / 4 of the length in the width direction W of the top wall portion 21 and the bottom wall portion 22. Note that the position restricting portion 213 disposed on the tip side LF of the contact spring 28 is formed to have a shorter length in the width direction W than the contact spring 28 formed to have a length of about 3 / 4 of the length in the width direction W of the top wall portion 21 and the bottom wall portion 22.

[0073] The connection terminal 1 configured with each element in this way is formed by bending a metal plate material 30 shown in FIG. 5. In FIG. 5, the upper side is the tip side LF of the assembled connection terminal 1, and the lower side is the base end side LB. Also, in FIG. 5, the left side becomes the right side WR in the front view of the assembled connection terminal 1, and the right side becomes the left side WL.

[0074] The metal plate material 30 is formed by punching a metal plate material with a predetermined thickness into the predetermined shape shown in FIG. 5. Specifically, an electric wire connection portion forming portion 33 that is disposed on the base end side LB and constitutes the electric wire connection portion 10 from a strip 31 continuous in the width direction W via a connection connection portion 32 is provided.

[0075] And in the electric wire connection portion forming portion 33, an insulation barrel forming portion 34 that forms an insulation barrel 11 having a barrel piece 111 on the base end side LB and a wire barrel forming portion 35 that forms a wire barrel 12 having a barrel piece 121 and is disposed on the tip side LF thereof are formed.

[0076] A box-shaped connection portion forming portion 40 that constitutes the box-shaped connection portion 20 is provided at the tip side LF of the connection connection portion 32. In FIG. 5, the bending portions that are the boundaries of the portions constituting each element in the box-shaped connection portion forming portion 40 are schematically shown by broken lines.

[0077] First, a rectangular portion that extends from the center in the width direction W of the wire barrel forming portion 35 that constitutes the electric wire connection portion 10 to the tip side LF and is longer in the longitudinal direction L than in the width direction W is a bottom wall surface forming portion 41 that constitutes the bottom wall portion 22. Note that a bead 221 is formed at a predetermined position in the bottom wall surface forming portion 41 in advance by pressing.

[0078] A portion disposed on the left side WL of the bottom wall surface forming portion 41 is a simple side wall portion forming portion 42 that constitutes the simple side wall portion 23. The simple side wall portion forming portion 42 is provided with a stepped-down portion 231 and a support portion 232 of the simple side wall portion 23.

[0079] A portion disposed further to the left side WL of the simple side wall portion forming portion 42 is a top wall portion forming portion 43 that constitutes the top wall portion 21. The top wall portion forming portion 43 is provided with an opening that constitutes the through hole 211 and a portion for forming the stabilizer 212. Further, since the top wall portion forming portion 43 is provided with a position restricting portion 213, a suppressing portion 214, and a foreign matter intrusion preventing portion 215 that extend from the top wall portion 21 in the longitudinal direction L, it is formed longer than the top wall portion 21 in the longitudinal direction L.

[0080] A portion disposed further to the left side WL of the top wall portion forming portion 43 is a top side side wall portion forming portion 44 that constitutes the top side side wall portion 242 of the fitting side wall portion 24. At the center in the longitudinal direction L at the end of the left side WL of the top side side wall portion forming portion 44, a fitting portion 244 that protrudes toward the left side WL is provided.

[0081] A portion disposed on the right side WR of the bottom wall surface forming portion 41 is a bottom side side wall portion forming portion 45 that constitutes the bottom side side wall portion 243 of the fitting side wall portion 24. At the end of the right side WR of the bottom side side wall portion forming portion 45, a fitting groove 245 that is concave toward the left side WL is provided, and a rising portion 291 is provided on the base end side LB of the fitting groove 245.

[0082] A portion disposed on the right side WR of the rising portion 291 in the bottom side side wall portion forming portion 45 is a spring forming portion 46 that constitutes the contact spring 28 and the support main body portion 292. The spring forming portion 46 constituted by the support main body portion 292 and the contact spring 28 and the rising portion 291 are formed in a T shape facing the base end side LB.

[0083] The metal plate material 30 configured in this way is bent and curved along each bending line to form the connection terminal 1. More specifically, the insulation barrel forming part 34 and the wire barrel forming part 35 in the wire connection part forming part 33 are curved to form the wire connection part 10.

[0084] Then, the box-shaped connection part forming part 40 of the metal plate material 30 is bent along the bending line to form the box-shaped connection part 20. Specifically, the simple side wall part forming part 42 and the bottom side wall part forming part 45 are bent with respect to the bottom wall surface part forming part 41 to form the bottom side wall part 243 of the lower HD of the simple side wall part 23 and the fitting side wall part 24.

[0085] Then, the spring forming part 46 is bent with respect to the bottom side wall part forming part 45 that constitutes the bottom side wall part 243 to form the support main body part 292 that constitutes the spring support part 29 and the contact spring 28. At this time, the tip part in the width direction W of the support main body part 292 is arranged on the upper surface of the support part 232 of the simple side wall part 23.

[0086] After the spring forming part 46 is bent with respect to the bottom side wall part 243 to form the support main body part 292 and the contact spring 28, the top wall part forming part 43 that constitutes the top wall part 21 is bent with respect to the simple side wall part forming part 42 that constitutes the simple side wall part 23.

[0087] Before bending the top wall part forming part 43 with respect to the simple side wall part forming part 42, the stabilizer 212 is bent to the back side of FIG. 5, and the position regulating part 213 and the foreign matter intrusion preventing part 215 are bent to the front side of FIG. 5 for formation.

[0088] Also, the top side wall part forming part 44 that constitutes the top side wall part 242 is bent with respect to the top wall part forming part 43 that constitutes the top wall part 21. By bending the ceiling wall part forming part 43 that constitutes the ceiling wall part 21 to a predetermined position, the fitting part 244 of the ceiling side side wall part 242 constituted by the ceiling side side wall part forming part 44 bent with respect to the ceiling wall part forming part 43 can be fitted into the fitting groove 245 provided in the bottom side side wall part 243 from the right side WR which is the outside in the width direction W as indicated by the arrow in FIG. 6, and the assembly of the box-shaped connection part 20 can be completed.

[0089] Note that by bending the ceiling wall part forming part 43 that constitutes the ceiling wall part 21 to a predetermined position, the pressing part 214 provided on the base end side LB of the ceiling wall part 21 extends from the rising part 291 of the bottom side side wall part 243 to the left side WL and abuts against the upper surface of the support main body part 292 that is spanned in the width direction W with respect to the support part 232 of the simple side wall part 23. Note that a plurality of metal plates 30 are provided at predetermined intervals in the longitudinal direction of the strip 31 (width direction W in FIG. 5).

[0090] As shown in FIG. 7, the connection terminal 1 configured as described above is inserted into the cavity 52 of the connector housing 50 from the base end side LB and used. Note that the cavity 52 is provided with locking claws 51 that project downward. Further, on the upper surface side of the cavity 52, as shown in FIG. 7(b), a slide groove 53 into which the stabilizer 212 slides and fits is provided.

[0091] When the connection terminal 1 is inserted into the connector housing 50 configured as described above from the base end side LB, first, the stabilizer 212 that projects upward from the ceiling wall part 21 slides and fits into the slide groove 53. Further, when the connection terminal 1 is inserted to the tip end side LF and disposed in the cavity 52, the locking claws 51 are locked to the through holes 211 provided in the ceiling wall part 21, and the connection terminal 1 can be disposed at a predetermined position with respect to the connector housing 50.

[0092] As described above, the box-shaped connection part 20 of the connection terminal 1 having the box-shaped connection part 20 into which the connection tab of the male connection terminal can be inserted is formed by bending a metal plate material 30, and has a pair of opposing top wall parts 21 and bottom wall parts 22, and a pair of opposing side wall parts 23, 24 that laterally connect the top wall part 21 and the bottom wall part 22. It is a hollow box shape provided with an insertion port 25 for inserting the connection tab. Of the pair of side wall parts 23, 24, the fitting side wall part 24 is composed of a top side side wall part 242 formed by bending a part extending from the top wall part 21, and a bottom side side wall part 243 formed by bending a part extending from the bottom wall part 22. A fitting part 244 is provided on the top side side wall part 242, and a fitting groove 245 into which the fitting part 244 fits is provided on the bottom side side wall part 243. Therefore, both the metal plate material 30 itself forming the connection terminal 1 and the size of the box-shaped connection part 20 can be miniaturized.

[0093] Specifically, by fitting the fitting part 244 provided on the top side side wall part 242 formed by bending a part extending from the top wall part 21 and the fitting groove 245 provided on the bottom side side wall part 243 formed by bending a part extending from the bottom wall part 22, the fitting side wall part 24 in the box-shaped connection part 20 which is a hollow box shape is configured, and the connection terminal 1 having the box-shaped connection part 20 that can maintain the box shape even when an external force acts can be configured.

[0094] Also, among the side wall parts 23, 24 in the box-shaped connection part 20 which is a hollow box shape, the fitting side wall part 24 is configured by the fitting of the top side side wall part 242 formed by bending a part extending from the top wall part 21 and the bottom side side wall part 243 formed by bending a part extending from the bottom wall part 22. Therefore, compared with the case of configuring by overlapping any of the wall parts (21, 22, 23, 24) in the hollow box shape, the connection terminal 1 having the box-shaped connection part 20 in a compact metal plate material 30 can be configured.

[0095] Furthermore, compared with the box-shaped connection part of the hollow box shape configured by overlapping any of the wall parts (21, 22, 23, 24), the box-shaped connection part 20 can be configured more compactly by the thickness of the overlapping plate material.

[0096] Further, the fitting portion 244 fits into the fitting groove 245 from the outside in the width direction W of the bottom side wall portion 243, and since the fitting portion 244 and the fitting groove 245 are configured to engage in the height direction H in which the top wall portion 21 and the bottom wall portion 22 are separated, the fitting state between the top side wall portion 242 and the bottom side wall portion 243 can be maintained even when an external force acts.

[0097] Also, since the fitting portion 244 can be fitted into the fitting groove 245 from the outside in the width direction W of the bottom side wall portion 243, the fitting portion 244 and the fitting groove 245 that engage in the height direction H in which the top wall portion 21 and the bottom wall portion 22 are separated can be easily fitted.

[0098] Further, the fitting portion 244 is provided in a manner that protrudes from the end portion on the lower side HD of the top side wall portion 242 toward the bottom side wall portion 243, and the fitting groove 245 is provided so as to be concave from the tip end portion of the bottom side wall portion 243. Therefore, compared with the case where the fitting portion 244 is provided on the bottom side wall portion 243, the shape of the metal plate material 30 before bending processing can be simplified.

[0099] Specifically, in the metal plate material 30 shown in FIG. 5, a spring forming portion 46 that constitutes the contact spring 28 is disposed on the right side WR of the bottom side wall portion forming portion 45 that constitutes the bottom side wall portion 243. If the fitting portion 244 is provided by further extending it to the right side WR from the right side WR of the bottom side wall portion forming portion 45, which is the end portion on the upper side HU of the bottom side wall portion 243, it may interfere with or be very close to the spring forming portion 46, resulting in a complicated shape or a complicated bending process. On the other hand, even if the fitting portion 244 is provided on the top side wall portion forming portion 44 that constitutes the top side wall portion 242, it only extends to the left side WL from the top side wall portion forming portion 44, and the above-described complication can be prevented.

[0100] In addition, since the box-shaped connection part 20 is formed in a flat cross-sectional shape in which the lengths of the top wall part 21 and the bottom wall part 22 in the width direction W are longer than the lengths of the side wall parts 23 and 24 in the height direction H, among the side wall parts 23 and 24 that are the short sides in the box shape with a flat cross-section, the fitting side wall part 24 is composed of a top-side side wall part 242 and a bottom-side side wall part 243 in which a fitting part 244 and a fitting groove 245 are fitted. Therefore, compared with the case where the top wall part 21 and the bottom wall part 22 that constitute the long side part are fitted and configured, a box shape with higher rigidity can be configured.

[0101] In addition, since a wire connection part 10 for connecting a covered wire is provided on the base end side LB that is the opposite side of the insertion port 25 in the box-shaped connection part 20, the connection terminal 1 can be attached to the tip of the covered wire via the wire connection part 10.

[0102] In addition, since a contact spring 28 that extends from the base end side LB toward the insertion port 25 in the internal space 27 of the box-shaped connection part 20 and contacts while biasing the inserted connection tab is provided, it contacts while biasing the connection tab inserted from the insertion port 25, and reliable conductivity can be obtained in the connection state with the male connection terminal.

[0103] In addition, since the contact spring 28 is arranged along the top wall part 21, and a spring support part 29 that extends from the bottom-side side wall part 243, spans over the simple side wall part 23, and supports the base end of the contact spring 28 is provided on the base end side LB of the box-shaped connection part 20, more stable conductivity can be obtained in the connection state with the male connection terminal.

[0104] Specifically, on the base end side LB of the box-shaped connection part 20, the spring support part 29 that extends from the bottom-side side wall part 243 and spans over the simple side wall part 23 supports the base end of the contact spring 28 arranged along the top wall part 21. Therefore, the contact spring 28 can be reliably biased and contacted with respect to the inserted connection tab, and more stable conductivity can be obtained in the connection state with the male connection terminal.

[0105] In addition, since the spring support portion 29 extends from the bottom side wall portion 243 and is spanned across the opposing simple side wall portion 23, the spring support portion 29 extending from the bottom side wall portion 243 will be bent in the direction opposite to the top wall portion 21 that is bent from the simple side wall portion 23. Therefore, compared with the case where the spring support portion 29 is bent in the same direction as the top wall portion 21 with respect to the simple side wall portion 23, errors can be absorbed, and the spring support portion 29 can be reliably spanned across the opposing simple side wall portion 23 to be stabilized.

[0106] In addition, since the spring support portion 29 is provided with a rising portion 291 that protrudes upward from the bottom side wall portion 243 and a support main body portion 292 that is spanned across the side wall portions 23 and 24 from the rising portion 291, since the rising portion 291 of the spring support portion 29 is adjacent to the top side wall portion 242, even if an external force acts, the rising portion 291 and the top side wall portion 242 will not interfere, and the spring support portion 29 and the top side wall portion 242 can be stabilized.

[0107] In addition, since a restraining portion 214 is provided that extends from the top wall portion 21 toward the base end side LB and is arranged along the upper portion of the support main body portion 292, the restraining portion 214 arranged along the upper portion will restrain the support main body portion 292. Therefore, it is possible to more reliably bring the contact spring 28 into contact with the connection tab while resisting the reaction force when contacting while urging the connection tab against which the contact spring 28 supported by the support main body portion 292 is inserted.

[0108] In addition, since a position regulating portion 213 is provided at the tip of the top wall portion 21 that protrudes toward the insertion port 25 and regulates the insertion position of the connection tab, for example, it is possible to prevent a connection state in which conductivity cannot be ensured, such as inserting a connection tab between the top wall portion 21 and the contact spring 28. Therefore, while regulating the insertion position by the position regulating portion 213, the connection tab can be inserted into the position where the contact spring 28 contacts while being urged, and a connection state with reliable conductivity can be realized.

[0109] In addition, since the length of the position regulating portion 213 in the width direction W is formed to be shorter than the length of the contact spring 28 in the width direction W, the position regulating portion 213 can surely fit the top side wall portion 242 and the bottom side wall portion 243 that constitute the fitting side wall portion 24 without interfering with the bending process of the top side wall portion 242 and the bottom side wall portion 243, thereby forming the side wall portions 23 and 24.

[0110] In addition, since a foreign matter intrusion preventing portion 215 is provided that extends from the top wall portion 21 and protrudes toward the opening 26 provided on the proximal end side LB in the box-shaped connection portion 20, in the connection state between the male connection terminal and the connection terminal 1, foreign matter can be prevented from entering the internal space 27 where the contact spring 28 contacts the connection tab, interfering with the contact portion between the contact spring 28 and the connection tab, and reducing the conductivity.

[0111] In addition, a stabilizer 212 is provided that protrudes upward from the top wall portion 21 Therefore, the stabilizer 212 can be provided without affecting the contact spring 28. Further, when attempting to mount the connection terminal 1 in an incorrect orientation with respect to the connector housing 50, the stabilizer 212 interferes, so that incorrect mounting can be prevented.

[0112] Specifically, when the connection terminal 1 is mounted in the cavity 52 of the connector housing 50, it is mounted while slidingly fitting the stabilizer 212. However, if the connection terminal 1 is to be mounted upside down with respect to the connector housing 50, the stabilizer 212 interferes with the inner surface of the connector housing 50, preventing the mounting of the connection terminal 1 in the reverse orientation.

[0113] In addition, since a through hole 211 that communicates the inside and the outside is provided in the top wall portion 21, the through hole 211 can be provided without affecting the contact spring 28. In addition, by locking the locking claw 51 to the through hole 211, the connection terminal 1 can be fixed to a predetermined position of the connector housing 50.

[0114] In the correspondence between the configuration of the present invention and the above-described embodiment, the member to be connected in the present invention corresponds to the male connection terminal. Similarly hereinafter, The insertion connection portion corresponds to the connection tab. The connection portion corresponds to the box-shaped connection portion 20. The connection terminal corresponds to the connection terminal 1. The metal plate material corresponds to the metal plate material 30. The top wall portion corresponds to the top wall portion 21. The bottom wall portion corresponds to the bottom wall portion 22. The side wall portions correspond to the side wall portions 23 and 24. The top side wall portion corresponds to the top side wall portion 242. The bottom side wall portion corresponds to the bottom side wall portion 243. The fitting portion corresponds to the fitting portion 244. The fitted portion corresponds to the fitting groove 245. The length in the width direction corresponds to the length of the width direction W. The length in the height direction corresponds to the length of the height direction H. The insertion port corresponds to the insertion port 25. The proximal end side corresponds to the proximal end side LB. The electric wire corresponds to the coated electric wire. The electric wire connection portion corresponds to the electric wire connection portion 10. The contact spring portion corresponds to the contact spring 28. The spring support portion corresponds to the spring support portion 29. The opposing side wall portions correspond to the simple side wall portion 23. The rising portion corresponds to the rising portion 291. The support main body portion corresponds to the support main body portion 292. The pressing portion corresponds to the pressing portion 214. The position restricting portion corresponds to the position restricting portion 213. The opening provided on the proximal end side corresponds to the opening 26. The foreign matter intrusion preventing portion corresponds to the foreign matter intrusion preventing portion 215. The protruding portion corresponds to the stabilizer 212. The through hole corresponds to the through hole 211, but the present invention is not limited only to the configuration of the above-described embodiment. For example, in the above description, the fitting portion 244 is provided on the top side wall portion 242 that constitutes the fitting side wall portion 24, and the fitting groove 245 is provided on the bottom side wall portion 243. However, the fitting groove 245 may be provided on the top side wall portion 242, and the fitting portion 244 may be provided on the bottom side wall portion 243.

[0115] Further, the fitting portion 244 and the fitting groove 245 may be provided on the top side wall portion 242 with a shift in the longitudinal direction L, and the fitting groove 245 and the fitting portion 244 may be provided at the corresponding positions on the bottom side wall portion 243. Furthermore, the above-described connection terminal 1 is provided with the wire connection portion 10 and the box-shaped connection portion 20. However, it may be configured only by the box-shaped connection portion 20 without the wire connection portion 10. In this case, it is configured such that the bus bar or the connection tab is inserted from each of the insertion port 25 and the opening 26 and electrically connected.

Explanation of Reference Numerals

[0116] 1... Connection terminal 10... Wire connection portion 20... Box-shaped connection portion 21... Top wall portion 22... Bottom wall portion 23, 24... Side wall portion 23... Simple side wall portion 24... Fitting side wall portion 25... Insertion port 26... Opening 28... Contact spring 29... Spring support portion 30... Metal plate material 50... Connector housing 211... Through hole 212... Stabilizer 213... Position regulating portion 214... Pressing portion 215... Foreign matter intrusion prevention portion 242... Top side wall portion 243... Bottom side wall portion 244... Fitting portion 245... Fitting groove 291... Upright portion 292... Support main body portion H... Height direction LB... Base end side W… width direction

Claims

1. A connection terminal having a box-shaped connection part into which an insertion connection part of a member to be connected can be inserted, The connection part is formed by bending a metal plate material, and has a pair of opposing top wall parts and bottom wall parts, and a pair of opposing side wall parts that connect the top wall part and the bottom wall part laterally. It is a hollow box shape provided with an insertion port for inserting the insertion connection part. A wire connection part for connecting a wire is provided on the base end side opposite to the insertion port in the connection part. One of the pair of side wall parts is composed of a top side wall part formed by bending a part extending from the top wall part, and a bottom side wall part formed by bending a part extending from the bottom wall part. The connection part is Formed in a flat cross-section where the width direction length of the top wall part and the bottom wall part is longer than the height direction length of the side wall part. A fitting part is provided on at least one of the top side wall part and the bottom side wall part, and a fitting part to which the fitting part fits is provided on the other. The fitting part fits into the fitting part from the outside of the side wall part. The fitting part and the fitting part to be fitted are configured to engage in a direction in which the top wall part and the bottom wall part are separated. The fitting part is provided in a manner that protrudes from the end of the top side wall part toward the bottom side wall part. The fitting part to be fitted is provided to be concave from the tip of the bottom side wall part. Taking the direction connecting the connection part and the wire connection part as the longitudinal direction, The longitudinal length of the top side wall part is set to be longer than half of the longitudinal length of the bottom side wall part. The longitudinal length of the fitting part is set to be longer than half of the longitudinal length of the top side wall part. Connection terminal.

2. Inside the connection part, a contact spring part is provided that extends from the proximal end side toward the insertion opening and contacts while biasing the inserted insertion connection part. The connection terminal according to claim 1.

3. The contact spring part is arranged along the top wall part, On the proximal end side of the connection part, A spring support part is provided that extends from either one of the bottom side wall part and the opposing side wall part, spans over to the other, and supports the proximal end of the contact spring part. The connection terminal according to claim 2.

4. The spring support part is, Extends from the bottom side wall part and spans over to the opposing side wall part. The connection terminal according to claim 3.

5. The spring support part is, Provided with an upright part that protrudes upward from the bottom side wall part and a support main body part that spans from the upright part to the side wall part. The connection terminal according to claim 4.

6. A restraining part is provided that extends from the top wall part toward the proximal end side and is arranged along the upper part of the support main body part. The connection terminal according to claim 5.

7. A position regulating part is provided that protrudes toward the insertion opening at the tip of the top wall part and regulates the insertion position of the insertion connection part. The connection terminal according to any one of claims 3 to 6.

8. The length in the width direction of the position regulating part is shorter than the length in the width direction of the contact spring part. The connection terminal according to claim 7.

9. A foreign matter intrusion preventing part is provided that extends from the top wall part and protrudes toward an opening provided on the proximal end side in the connection part. The connection terminal according to any one of claims 1 to 8.

10. which is provided with a protruding portion protruding upward from the top wall portion The connection terminal according to any one of claims 1 to 9.

11. wherein the top wall portion is provided with a through hole communicating the inside and the outside The connection terminal according to any one of claims 1 to 10.

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