Female terminal fitting and connector

Abstract

In the present invention, a first female terminal fitting (19) comprises: a box part (19A) that has a rectangular tubular shape and that extends in a longitudinal direction; a lead (19B) that extends in a band shape rearward from one among a plurality of wall parts forming the box part (19A); and reinforcing walls (19L). The reinforcing walls (19L) extend upward, in a direction intersecting a plate surface of the lead (19B), from each of the two side edges of the lead (19B) in the width direction.

Description

Female terminal fitting and connector

[0001] The present disclosure relates to a female terminal fitting and a connector.

[0002] Patent Document 1 discloses a connector mounted on an FPC. In this connector, a terminal fitting is connected to a conductor portion of the FPC by solder. In the one of Patent Document 1, the terminal fitting is housed in two upper and lower stages with respect to the cavity of the housing. The terminal fitting is provided with an extended wall (lead) extending rearward from the rear end of the cavity. The extended wall is connected to the conductor portion of the FPC by solder. The portions connected to the conductor portion in the extended wall are arranged in a staggered manner so that the distance does not become too close, thereby preventing leakage between the terminal fittings.

[0003] Japanese Patent Application Laid-Open No. 2019-192612

[0004] When the terminal fittings are housed in a plurality of upper and lower stages with respect to the housing and the portions connected to the conductor portion in the terminal fittings are arranged in a staggered manner as in Patent Document 1, the extension dimension from the rear end of the cavity of the extended wall in the upper-stage terminal fitting is made longer than that of the lower-stage terminal fitting so that the portions connected to the conductor portion do not overlap. In such a form, the extended wall of the upper-stage terminal fitting is more likely to be deformed than that of the lower-stage terminal fitting, and there is a concern that it is difficult to ensure the coplanarity (flatness) of the portions connected to the conductor portion.

[0005] The connector of the present disclosure has been completed based on the above circumstances, and an object thereof is to provide a female terminal fitting and a connector capable of ensuring good coplanarity (flatness).

[0006] The female terminal fitting of the first disclosure includes: a box portion having a square tubular shape and extending in the front-rear direction; a lead extending rearward in a strip shape from one of a plurality of wall portions forming the box portion; and a reinforcing wall. The reinforcing wall extends in a direction intersecting the plate surface of the lead from at least one of both side edges in the width direction of the lead, or extends overlapping the plate surface of the lead.

[0007] The connector of the second disclosure comprises the female terminal fitting of the first disclosure and a housing in which a cavity is formed, wherein the cavity houses the box portion, and the female terminal fitting is provided with a connecting portion that extends from the rear end of the lead in the thickness direction of the lead and is connected to the object to be connected, and the connecting portion, the lead, and the reinforcing wall protrude to the rear of the cavity.

[0008] According to this disclosure, it is possible to provide female terminal fittings and connectors that can ensure good coplanarity (flatness).

[0009] Figure 1 is an exploded perspective view showing the connector of Embodiment 1. Figure 2 is a perspective view of the female housing seen from the front and upper side. Figure 3 is a perspective view of the female housing seen from the rear and upper side. Figure 4 is a perspective view showing the first female terminal fitting. Figure 5 is a perspective view showing the second female terminal fitting. Figure 6 is a side cross-sectional view showing the female housing mounted on a flexible circuit board. Figure 7 is a perspective view showing the female housing mounted on a flexible circuit board. Figure 8 is a perspective view showing the first female terminal fitting of another embodiment. Figure 9 is a perspective view showing the first female terminal fitting of yet another embodiment.

[0010] [Description of Embodiments of the Disclosure] Embodiments of the Disclosure will be described first by listing them. The female terminal fitting of the first disclosure comprises: (1) a box portion that is rectangular in shape and extends in the front-rear direction; a lead that extends in a strip shape backward from one of the plurality of wall portions forming the box portion; and a reinforcing wall, wherein the reinforcing wall extends from at least one of the side edges in the width direction of the lead in a direction that intersects the plate surface of the lead, or extends overlapping the plate surface of the lead.

[0011] According to the configuration described in (1) above, the lead is prone to bending in the thickness direction, but the rigidity of the lead can be increased by providing a reinforcing wall.

[0012] (2) In the female terminal fitting described in (1) above, the plurality of wall portions include a first wall portion on which the leads are connected, and a pair of second wall portions that are separately connected to each of the widthwise side edges of the first wall portion and extend in a direction intersecting the plate surface of the first wall portion, and the reinforcing wall is preferably connected to the rear end of at least one of the second wall portions.

[0013] According to the configuration described in (2) above, the reinforcing portion is connected to the wall portion in the same way as the lead portion, so it is possible to prevent the lead portion from bending relative to the wall portion.

[0014] (3) In the female terminal fitting described in (1) or (2) above, it is preferable that the reinforcing wall extends from each of the two side edges in the width direction of the lead in a direction that intersects the plate surface of the lead.

[0015] According to the configuration described in (3) above, the rigidity of the lead in the thickness direction can be further increased.

[0016] (4) In the female terminal fitting described in any of (1) to (3) above, it is preferable that the reinforcing wall is provided continuously from the front end to the rear end of the lead.

[0017] According to the configuration described in (4) above, the overall rigidity of the lead in the front-to-back direction can be increased.

[0018] (5) In the female terminal fitting described in any of (1) to (4) above, it is preferable that the rear end edge of the reinforcing wall is formed perpendicular to the front-rear direction.

[0019] According to the configuration of (5) above, for example, when inserting the female terminal fitting into the cavity of the housing, it becomes easier to press the rear end of the reinforcing wall forward.

[0020] The connector of the second disclosure comprises (6) a female terminal fitting as described in any of (1) to (5) above, and a housing in which a cavity is formed, wherein the cavity houses the box portion, the female terminal fitting is provided with a connecting portion that extends from the rear end of the lead in the thickness direction of the lead and is connected to the object to be connected, and the connecting portion, the lead, and the reinforcing wall protrude to the rear of the cavity.

[0021] According to the configuration described in (6) above, the lead is prone to bending in the thickness direction, but the rigidity of the lead can be increased by providing a reinforcing wall. This prevents deformation of the lead and improves the coplanarity of the connection to the object being connected.

[0022] [Details of Embodiments of the Disclosure] Specific examples of the Disclosure will be described below with reference to the drawings. However, the present invention is not limited to these examples and is intended to be shown by the claims, with all modifications in the meaning and scope equivalent to the claims being included.

[0023] <Embodiment 1> Embodiment 1, which embodies the female terminal fitting and connector of the present disclosure, will be described with reference to Figures 1 to 8. As shown in Figure 1, the connector 10 comprises a flexible substrate 13 to be connected, a female housing 11 which is a housing, a first female terminal fitting 19 which is a female terminal fitting, and a second female terminal fitting 20 which is a female terminal fitting.

[0024] In this embodiment 1, the front, rear, top, bottom, right, and left sides are represented by "F," "B," "U," "D," "R," and "L" in the figure. In the following description, the direction in which the female housing 11 and the mating housing (not shown) fit together is defined as the fitting direction (front-rear direction). In this embodiment 1, the left-right direction corresponds to the width direction and is the direction that intersects the fitting direction.

[0025] [Structure of the Flexible Substrate] The flexible substrate 13 is made of what is known as FPC (Flexible Printed Circuits). The flexible substrate 13 has flexibility (deformability) that allows it to be easily deformed when subjected to external forces. Multiple wiring patterns (not shown) are provided on one surface of the flexible substrate 13. The ends of each wiring pattern are exposed and formed as multiple soldering surfaces 13A. These soldering surfaces 13A are arranged in two rows in the front-to-back direction and in multiple rows in the width direction (left-to-right direction). The connection body portion 19M of the first female terminal fitting 19 (described later) and the connection body portion 20M of the second female terminal fitting 20 (described later) are connected to these soldering surfaces 13A by solder. On the flexible substrate 13, one fixing surface 13B is provided in each of the left and right regions of the soldering surface 13A, to which a fixing fitting 15 (described later) is soldered and fixed. A reinforcing plate 13C is attached to the other surface of the flexible substrate 13. The reinforcing plate 13C is thicker than the flexible substrate 13 and does not easily deform even when subjected to external forces. In other words, the reinforcing plate 13C has the function of preventing the flexible substrate 13 from deforming unintentionally.

[0026] [Structure of the Female Housing] The female housing 11 is made of synthetic resin. As shown in Figures 2 and 3, the female housing 11 is block-shaped. Inside the female housing 11, cavities 11A extending in the front-to-back direction are formed in two rows vertically and in multiple rows horizontally. The box portion 19A of the first female terminal fitting 19, which will be described later, is inserted from the rear and housed in each of the upper cavities 11A (see Figure 6). The box portion 20A of the second female terminal fitting 20, which will be described later, is inserted from the rear and housed in each of the lower cavities 11A (see Figure 6).

[0027] As shown in Figure 2, the female housing 11 is provided with a block-shaped terminal housing portion 11B that protrudes forward. A cavity 11A is formed in the terminal housing portion 11B. A pair of locking claws 11C are provided side by side in the left-right direction, protruding upward from the front end of the upper surface of the terminal housing portion 11B. These locking claws 11C are engaged with a locking arm provided on the mating housing (not shown).

[0028] The female housing 11 is provided with a covering wall portion 11D that surrounds the lower surface and both left and right sides of the terminal housing portion 11B. An insertion groove 11E that is open to the front is formed between the inner surface of the covering wall portion 11D and the outer surface (lower surface and both left and right sides) of the terminal housing portion 11B. The hood portion of the mating housing (not shown) is inserted into the insertion groove 11E.

[0029] As shown in Figure 3, recesses 11F are formed on the left and right outer sides of the covering wall portion 11D located on both the left and right sides, and are recessed inwards in the left and right direction. One fixing bracket 15 is attached to each recess 11F (see Figure 7). At both ends of the rear end of the female housing 11, a pair of protrusions 11G are provided, projecting backward.

[0030] [Configuration of the First Female Terminal Fitting] The first female terminal fitting 19 is formed by punching and bending a conductive metal plate into a predetermined shape. As shown in Figure 4, the first female terminal fitting 19 has a rectangular tubular box portion 19A extending in the front-rear direction, a lead 19B, a pair of reinforcing walls 19L, and a connecting portion 19E.

[0031] The box portion 19A includes a first wall portion 19G, a pair of second wall portions 19H extending upward and intersecting the plate surface of the first wall portion 19G, each of the left-right (widthwise) side edges of the first wall portion 19G, a third wall portion 19J connected to the upper end edge of each of the pair of second wall portions 19H and arranged parallel to the first wall portion 19G, and a closing wall portion 19K connected to the rear end edge of the third wall portion 19J and extending downward. A tab of a male terminal fitting (not shown) is inserted into the box portion 19A from the front. An elastic contact piece (not shown) is arranged inside the box portion 19A. When the tab is inserted into the box portion 19A from the front, the elastic contact piece elastically contacts the tab, and the male terminal fitting and the first female terminal fitting 19 are electrically connected. The pair of second wall portions 19H are provided with upwardly projecting retaining projections 19C.

[0032] As shown in Figure 6, the first female terminal fitting 19 is inserted from the rear into the upper cavity 11A of the female housing 11. Specifically, it is inserted into the cavity 11A from the front end of the box portion 19A. At this time, the box portion 19A is inserted into the cavity 11A while the retaining projection 19C bites into the upper surface of the inner surface of the cavity 11A. The insertion operation of the first female terminal fitting 19 into the cavity 11A is stopped when the front end of the box portion 19A comes into contact with the front end surface of the inner surface of the cavity 11A. The first female terminal fitting 19 is locked in place inside the cavity 11A by the retaining projection 19C biting into the inner surface of the cavity 11A.

[0033] The lead 19B is connected to the rear end of the first wall portion 19G, which is part of the wall portion that constitutes the box portion 19A, and extends in a strip-like shape backward. The thickness direction of the lead 19B is oriented in the vertical direction. When the box portion 19A of the first female terminal fitting 19 is housed in the cavity 11A, the lead 19B is positioned to protrude to the rear of the cavity 11A.

[0034] As shown in Figure 4, a pair of reinforcing walls 19L are connected to the rear ends of each of the second wall sections 19H. Each reinforcing wall 19L extends upward from each of the widthwise side edges of the lead 19B, intersecting the plate surface of the lead 19B. Each reinforcing wall 19L is provided continuously from the front end to the rear end of the lead 19B. The rear end edge of each reinforcing wall 19L is formed perpendicular to the front-rear direction (see Figure 6).

[0035] The connecting portion 19E extends from the rear end of the lead 19B in the thickness direction of the lead 19B. The connecting portion 19E has a bent portion 19D and a connecting body portion 19M. The bent portion 19D is connected to the rear end of the lead 19B and extends downward in a strip shape. The thickness direction of the bent portion 19D is oriented in the front-to-back direction. The connecting body portion 19M is connected to the tip (lower end) of the bent portion 19D and extends backward in a strip shape. The thickness direction of the connecting body portion 19M is oriented in the up-to-down direction. The width dimension of the connecting body portion 19M is smaller than the width dimension of the bent portion 19D and the width dimension of the lead 19B. The connecting body portion 19M is positioned slightly to the right of the bent portion 19D.

[0036] [Configuration of the second female terminal fitting] The second female terminal fitting 20 is formed by punching and bending a conductive metal plate into a predetermined shape. As shown in Figure 5, the second female terminal fitting 20 has a rectangular tubular box portion 20A extending in the front-rear direction, a lead 20B, a pair of reinforcing walls 20L, and a connecting portion 20E.

[0037] The box portion 20A has the same form as the box portion 19A of the first female terminal fitting 19. The box portion 20A includes a first wall portion 20G, a pair of second wall portions 20H that are separately connected to each of the left and right side edges of the first wall portion 20G and extend upward and intersect the plate surface of the first wall portion 20G, a third wall portion 20J that is connected to the upper end edge of each of the pair of second wall portions 20H and is arranged parallel to the first wall portion 20G, and a closing wall portion 20K that is connected to the rear end edge of the third wall portion 20J and extends downward. A tab of a male terminal fitting (not shown) is inserted into the box portion 20A from the front. An elastic contact piece (not shown) is arranged inside the box portion 20A. When the tab is inserted into the box portion 20A from the front, the elastic contact piece elastically contacts the tab, and the male terminal fitting and the second female terminal fitting 20 are electrically connected. A pair of second wall portions 20H are provided with upward-projecting retaining protrusions 20C.

[0038] As shown in Figure 6, the second female terminal fitting 20 is inserted from the rear into the lower cavity 11A of the female housing 11. Specifically, it is inserted into the cavity 11A from the front end of the box portion 20A. At this time, the box portion 20A is inserted into the cavity 11A while the retaining projection 20C bites into the upper surface of the inner surface of the cavity 11A. The insertion operation of the second female terminal fitting 20 into the cavity 11A is stopped when the front end of the box portion 20A comes into contact with the front end surface of the inner surface of the cavity 11A. The second female terminal fitting 20 is locked in place inside the cavity 11A by the retaining projection 20C biting into the inner surface of the cavity 11A.

[0039] The lead 20B is connected to the rear end of the first wall portion 20G, which is part of the wall portion that constitutes the box portion 20A, and extends in a strip-like shape backward. The thickness direction of the lead 20B is oriented in the vertical direction. When the box portion 20A of the second female terminal fitting 20 is inserted into the cavity 11A, the lead 20B is positioned to protrude to the rear of the cavity 11A. The front-to-back extension dimension of the lead 20B is smaller than the front-to-back extension dimension of the lead 19B of the first female terminal fitting 19.

[0040] As shown in Figure 5, a pair of reinforcing walls 20L are connected to the rear ends of each of the second wall sections 20H. Each reinforcing wall 20L extends upward from each of the widthwise side edges of the lead 20B, intersecting the plate surface of the lead 20B. Each reinforcing wall 20L is continuously provided from the front end to the rear end of the lead 20B. The rear end edge of each reinforcing wall 20L is formed perpendicular to the front-rear direction (see Figure 6). The front-rear extension dimension of the reinforcing wall 20L is smaller than the front-rear extension dimension of the reinforcing wall 19L of the first female terminal fitting 19 (see Figure 6).

[0041] The connecting portion 20E extends from the rear end of the lead 20B in the thickness direction of the lead 20B. The connecting portion 20E has a bent portion 20D and a connecting body portion 20M. The bent portion 20D is connected to the rear end of the lead 20B and extends downward in a strip shape. The thickness direction of the bent portion 20D is oriented in the front-to-back direction. The bent portion 20D spreads out to the left of the box portion 20A. The vertical extension dimension of the bent portion 20D is smaller than the vertical extension dimension of the bent portion 19D of the first female terminal fitting 19.

[0042] The connecting body portion 20M is connected to the tip (lower end) of the bent portion 20D and extends backward in a strip shape. The thickness direction of the connecting body portion 20M is oriented in the vertical direction. The width dimension of the connecting body portion 20M is smaller than the width dimension of the bent portion 20D and the width dimension of the lead 20B. The connecting body portion 20M is positioned slightly to the left of the bent portion 20D. The connecting body portion 20M is positioned to protrude to the left of the box portion 20A. The vertical, horizontal, and front-to-back dimensions of the connecting body portion 20M are the same as the vertical, horizontal, and front-to-back dimensions of the connecting body portion 19M of the first female terminal fitting 19.

[0043] As shown in Figures 6 and 7, either the first female terminal fitting 19 or the second female terminal fitting 20 is inserted into each cavity 11A, and a pair of fixing brackets 15 are attached to the female housing 11 (see Figure 7), which is then attached to the flexible substrate 13. Specifically, the connecting body portion 19M of the first female terminal fitting 19 is soldered in contact with the soldering surface 13A located on the rear side of the soldering surface 13A (see Figure 7). The connecting body portion 20M of the second female terminal fitting 20 is soldered in contact with the soldering surface 13A located on the front side of the soldering surface 13A (see Figure 7). At the same time, the lower end surfaces of the pair of fixing brackets 15 are soldered in contact with each fixing surface 13B (see Figure 7). In other words, the connecting body portions 19M and 20M are connected to the soldering surface 13A. In this way, the female housing 11 is attached to the flexible substrate 13. When the box portion 19A of the first female terminal fitting 19 is housed in the cavity 11A, the connecting portion 19E, lead 19B, and reinforcing wall 19L protrude to the rear of the cavity 11A. When the box portion 20A of the second female terminal fitting 20 is housed in the cavity 11A, the connecting portion 20E, lead 20B, and reinforcing wall 20L protrude to the rear of the cavity 11A.

[0044] As described above, the first female terminal fitting 19 includes a box portion 19A having a square tubular shape and extending in the front-rear direction, a lead 19B extending backward in a strip shape from one of a plurality of wall portions forming the box portion 19A, and a reinforcing wall 19L. The reinforcing wall 19L extends upward from each of both side edges in the width direction of the lead 19B and intersects the plate surface of the lead 19B. According to this configuration, although the lead 19B is easily bent in the plate thickness direction, the rigidity of the lead 19B can be increased by providing the reinforcing wall 19L.

[0045] In the first female terminal fitting 19, the plurality of wall portions of the box portion 19A include a first wall portion 19G to which the lead 19B is continuous, and a pair of second wall portions 19H that are separately continuous to each of both side edges in the width direction of the first wall portion 19G and extend in a direction intersecting the plate surface of the first wall portion 19G. The reinforcing wall 19L is continuous with the rear end of each of the second wall portions 19H. According to this configuration, since the reinforcing wall 19L is continuous with the wall portion in the same manner as the lead 19B, it is possible to prevent the lead 19B from bending with respect to the first wall portion 19G.

[0046] In the first female terminal fitting 19, the reinforcing wall 19L extends upward from each of both side edges in the width direction of the lead 19B and intersects the plate surface of the lead 19B. According to this configuration, the rigidity of the lead 19B in the plate thickness direction can be further increased.

[0047] In the first female terminal fitting 19, the reinforcing wall 19L is continuously provided from the front end portion to the rear end portion of the lead 19B. According to this configuration, the rigidity of the entire lead 19B in the front-rear direction can be increased.

[0048] In the first female terminal fitting 19, the rear end edge of the reinforcing wall 19L is formed perpendicular to the front-rear direction. According to this configuration, for example, when the first female terminal fitting 19 is inserted into the cavity 11A of the female housing 11, the rear end of the reinforcing wall 19L can be easily pressed forward.

[0049] The connector 10 comprises a first female terminal fitting 19 and a female housing 11 in which a cavity 11A is formed. The cavity 11A houses the box portion 19A. The first female terminal fitting 19 is provided with a connecting portion 19E that extends from the rear end of the lead 19B in the thickness direction of the lead 19B and connects to the flexible substrate 13. The connecting portion 19E, the lead 19B, and the reinforcing wall 19L protrude from the rear of the cavity 11A. With this configuration, the lead 19B is prone to bending in the thickness direction, but the rigidity of the lead 19B can be increased by providing the reinforcing wall 19L. This prevents deformation of the lead 19B and increases the coplanarity of the connecting portion 19E to the flexible substrate 13.

[0050] <Other Embodiments> The embodiments disclosed herein should be considered in all respects to be illustrative and not restrictive. The scope of the present invention is not limited to the embodiments disclosed herein, but is indicated by the claims, and all modifications within the meaning and scope of the claims are intended to be included.

[0051] Unlike Embodiment 1, the terminal fitting may be a male terminal fitting, and the female housing may be replaced with a male housing.

[0052] Unlike Embodiment 1, the reinforcing wall 119L may be provided connected only to the rear end of the rightmost second wall portion 119H of the pair of second wall portions 119H, as shown in Figure 8 for the first female terminal fitting 119. Also, although not shown, the reinforcing wall may be provided connected only to the rear end of the leftmost second wall portion of the pair of second wall portions. Furthermore, the reinforcing wall 219L may be configured to extend overlapping the plate surface of the lead 219B, as shown in Figure 9 for the first female terminal fitting 219. Additionally, one of the pair of reinforcing walls may be connected to the second wall portion, while the other is not connected to the second wall portion.

[0053] Unlike Embodiment 1, the cavity may be formed in only one stage, or in three or more stages.

[0054] Unlike Embodiment 1, the reinforcing wall may be provided so as to be interrupted in the front-rear direction at the side edge in the width direction of the lead.

[0055] Unlike Embodiment 1, the angle between the lead and the reinforcing wall does not have to be a right angle, may be larger than a right angle, or may be smaller than a right angle.

[0056] Unlike Embodiment 1, the rear edge of the reinforcing wall does not have to be formed perpendicular to the front-rear direction. For example, it may be formed as a recess facing forward toward the vertical center of the rear edge, or it may be formed as a projection facing backward toward the vertical center of the rear edge.

[0057] Unlike Embodiment 1, the connection target may be a circuit board made of glass epoxy resin or cardboard.

[0058] 10: Connector 11: Female housing (housing) 11A: Cavity 11B: Terminal housing 11C: Locking claw 11D: Covering wall 11E: Insertion groove 11F: Recess 11G: Protrusion 13: Flexible circuit board (to be connected) 13A: Soldering surface 13B: Fixing surface 13C: Reinforcement plate 15: Fixing bracket 19, 119, 219: First female terminal fittings (female terminal fittings) 19A, 20A: Box part 19B, 20B, 219B: Lead 19C, 20C: Retaining projection 19D, 20D: Bent part 19E, 20E: Connection part 19G, 20G: First wall part 19H, 20H, 119H: Second wall part 19J, 20J: Third wall part 19K, 20K: Closed wall section 19L, 20L, 119L, 219L: Reinforcement wall 19M, 20M: Connection main body section 20: Second female terminal fitting (female terminal fitting)

Claims

1. A female terminal fitting comprising: a box portion that is rectangular in shape and extends in the front-to-back direction; a lead that extends in a strip shape backward from one of the plurality of wall portions forming the box portion; and a reinforcing wall, wherein the reinforcing wall extends from at least one of the side edges in the width direction of the lead in a direction that intersects the plate surface of the lead, or extends overlapping the plate surface of the lead.

2. The female terminal fitting according to claim 1, wherein the plurality of wall portions include a first wall portion on which the leads are connected, and a pair of second wall portions that are separately connected to each of the widthwise side edges of the first wall portion and extend in a direction intersecting the plate surface of the first wall portion, and the reinforcing wall is connected to the rear end of at least one of the second wall portions.

3. The female terminal fitting according to claim 1 or claim 2, wherein the reinforcing wall extends from each of the two side edges in the width direction of the lead in a direction intersecting the plate surface of the lead.

4. The female terminal fitting according to claim 1 or claim 2, wherein the reinforcing wall is continuously provided from the front end to the rear end of the lead.

5. The female terminal fitting according to claim 1 or claim 2, wherein the rear end edge of the reinforcing wall is formed perpendicular to the front-rear direction.

6. A connector comprising: a female terminal fitting according to claim 1 or claim 2; and a housing having a cavity formed therein, wherein the cavity houses the box portion; the female terminal fitting is provided with a connecting portion extending from the rear end of the lead in the thickness direction of the lead and connected to the object to be connected; and the connecting portion, the lead, and the reinforcing wall protrude to the rear of the cavity.

Images